Turnout of guideway beam-based transit system
The turnout of the preferred embodiment of this invention comprises a plurality of guideway beams, at least one guide plate assembly, a plurality of carriage assemblies, a drive means, and at least one carriage assembly bed, wherein neighboring guideway beams are connected together by an articulated joint to form an adjustable segment. The guideway beam includes a guideway beam frame, and at least one inner beam. The guideway beam has at least one guideway beam segment, in which two sides of the guideway beam have different horizontal curvatures. The guide plate assembly includes first and second guide plates, and delineates curvature of the guideway to accommodate the state of the guideway segment in the turnout.
This application is entitled to the benefit of provisional applications: Application No. 60/538,451 filed on Jan. 22, 2004, entitled “Double Crossover of Monorail”; and Application No. 60/609,174 filed on Sep. 10, 2004, entitled “Turnout of Monorail”.
FIELD OF THE INVENTIONThis invention relates generally to a turnout of a guideway beam-based transit system.
BACKGROUND OF THE INVENTIONThe most popular turnout type used in the mainline guideway of the monorail system is known as the segmented switch, and the best known turnout type used in the mainline guideway of the maglev system is known as the flexible switch or the bendable switch. These switches were both invented by Rosenbaum et al. of Alweg of Germany as shown in U.S. Pat. Nos. 2,997,004, and 3,093,090.
As we understand it, the segmented switch of the monorail is a modified version of one of the embodiments described in the U.S. Pat. No. 2,997,004 by Rosenbaum et al. The segmented switch includes a series of flexible guideway beam segments, equipped with a flexible guide plate in each side, each segment having a rigid member at the longitudinal ends, and neighboring segments share the rigid member, a pivot that connects the neighboring segments and a bogie that carry the rigid member. The segmented switch is able to have any number of switch states in either direction including the straight state, and any number of segments. This switch, however, uses relatively short segments (or guideway beams), and thus could be costly to built a high-speed turnout.
A high-speed turnout for a maglev guideway system shown in U.S. Pat. No. 5,287,811 by Matsuura et al. is a direct derivation of the turnout described in the U.S. Pat. No. 3,093,090 by Rosenbaum, and uses a flexible beam as the means to create curvature of the guideway beam under a bent state. In these turnouts, the main guideway beam is a box beam of gradually decreasing width along its length so that the beam would bend when it is pulled in a lateral direction at the free-end. In the flexible switch, the potential problem would be that relates to metal fatigue, and could become a cause of concern in turnouts used in a crossover at the terminal that must change positions as frequently as every few minutes.
Other turnout types include a rigid steel girder type as is shown in U.S. Pat. No. 5,193,767 by Mihirogi; the high-speed turnout of the JNR system that uses a series of rigid guideway beams that are carried by bogies that traverse in lateral directions; the switch proposed in U.S. Pat. No. 5,865,123 by Powell et al. that uses electro-magnetic means to switch between two switch states; and the turnout used in the double crossover of the Haneda Line, which is essentially a special type of pivot switch with beam-end segments capable of changing curvature of the guide plates by electro-mechanical means. The double crossover uses four of these turnouts and a pivotable slice of a guideway beam at the mid-point of the double crossover.
The turnout of the guideway beam-based transit system of our interest includes two or more of generally rigid guideway beams with an articulated joint between each pair of neighboring beams to form different states of the turnout. Earlier patents that use rigid guideway beams for a turnout include that by Schutze (U.S. Pat. No. 2,903,972). The fact that Schutze was one of the inventors of the aforementioned newer U.S. Pat. No. 2,997,004 probably is an indication that the turnout by Schutze was not satisfactory at least to the eyes of the inventors of the newer flexible beam switch. We believe Schutze's instinct of using the rigid guideway beam was right. If his turnout failed, we believe, it's because the guide plates of his turnout had neither adequate lateral support means nor adequate locking means.
OBJECTS OF THE INVENTIONAn object of this invention is the provision of a turnout of a guideway beam-based transit system with at least one adjustable segment, in which the curvature of the guide plate is adjustable for different states of the turnout.
An object of this invention is the provision of a turnout (of a guideway beam-based transit system) having a minimum number of guideway beams.
An object of this invention is the provision of a turnout (of a guideway beam-based transit system) that is relatively easy to maintain.
An object of this invention is the provision of a turnout (of a guideway beam-based transit system) that is used in a double crossover for high- and medium-speed trains.
An object of this invention is the provision of a turnout (of a guideway beam-based transit system) that includes an expandable guideway beam.
SUMMARY OF THE INVENTION Preferred EmbodimentA turnout of a guideway beam-based transit system of this invention includes a plurality of serially aligned generally rigid guideway beams, at least one guide plate assembly, a plurality of carriage assemblies, a drive means, and at least one carriage assembly bed, wherein guideway beams are connected together by articulated joints. The guide plate assembly comprises at least one guide plate in each side of the guideway beam, guide plate holders that slidably hold the guide plate, and tie bars that connect the guide plate holders. The guideway beams are mounted on carriage assemblies, wherein each of which is equipped with a guideway support frame, a bogie, gear sets, and wheels, and run on rail tracks that are laid on a carriage assembly bed. The drive means includes at least one motor and at least one driveshaft. The motor is rotatably connected to the driveshaft that includes universal joints, slip joints, and couplings such as Oldham couplings to handle minor changes in lengths and misalignments of shaft segments, and gear sets are adjusted for synchronized operation of the carriage assemblies. In the turnout that uses a plurality of serially installed driveshafts, the driveshafts of neighboring segments are rotatably connected using a gear set.
Our main interest is in the two-state turnout, which is able to switch between any predefined states. For the purpose of illustration, the discussion in this specification assumes the most popularly used straight/bent type turnout (see
The end beam 6 has two segments: one half-beam long beam segment with two flat (or horizontally straight) working surfaces; the other segment called a beam-end segment 2C with one side having a horizontally convexly curved working surface and the other side having a flat (or horizontally straight) working surface as shown in (B) of
The turnout 1A shown in
The basic theme (common in all embodiments) of this invention is the use of the working surfaces of the generally rigid guideway beams and the flexible guide plates in forming the geometries of the adjustable segment of the turnout. The premise is that pressing of guide plate on one side of the serially aligned beams against the working surfaces of the guideway beam segments of the same side and locking up the guide plates of both sides along the adjustable segment of the turnout at the given state should ensure the turnout to form and maintain the geometry of the turnout for the given state.
Delineation of a turnout (or change curvature of the adjustable segment) by pressing the flexible guide plate against the working surfaces (of the sides) of the guideway beam segments is most effective in long guideway beams. The use of long guideway beams, however, will reduce the effective width of the running surface of the guideway beam. Possible undesirable effects could be that (1) the guideway beam frame becomes not strong enough to bear the weight of the train, and/or that (2) the running surface becomes too narrow for running trains on it. To avoid these undesirable effects, the guideway beams may have to be made taller than the normal height in the turnout segment, and/or the guideway beams may have to use an alternative movable runway board design (see
A couple of examples are shown here for a cursory examination of the geometries of the key parts of the proposed turnout. In a turnout as shown in
In a turnout as shown in
In the preferred embodiment of this invention, each of the guideway beams has a guideway beam frame with first and second sidewalls and at least one inner beam equipped with guide plate support means. Under the straight state, in the beam-end segment, the guide plate support means of the inner beam protrudes from the holes of the first sidewall of the guideway beam frame and press against the guide plate holder on that side (or the first side), and during that time, the working surface of the second sidewall of the guideway beam frame presses against the guide plate holder on the on the other side (or the second side). The imaginary plane enveloping the working surfaces of the guide plate support means of a side of the inner beam is the working surface of that side of the inner beam. In the mid-beam segment, guide plate support means of the inner beam protrude from the holes of the second sidewall of the guideway beam frame and press against the guide plate holder on the second side, and during that time, the working surface of the first sidewall of the guideway beam frame presses against the guide plate holders on the first side.
Under the bent state, in the beam-end segment, guide plate support means of the inner beam protrude from the holes of the second sidewall of the guideway beam frame and press against the guide plate holder on the second side, and during that time, the working surface of the first sidewall of the guideway beam frame presses against the guide plate holders on the first side. In the mid-beam segment, guide plate support means of the inner beam protrudes from the holes of the first sidewall of the guideway beam frame and press against the guide plate holder on that side (or the first side), and during that time, the working surface of the second sidewall of the guideway beam frame presses the guide plate holder on the on the other side (or the second side).
Thus every segment of the guide plate in either side is being pressing by either the working surface of the guideway beam or the working surface of the inner beam (or the working surfaces of the guide plate support means of the inner beam) under a locked state.
Second Embodiment The second embodiment of this invention uses the same guideway types (as those types shown in
In this embodiment, each of the first and second sidewalls of the guideway beam frame has two working surfaces: one on the internal side of each of the first and second walls and the other on the external side of each of the first and second walls. In the beam-end segment of the guideway beam, the interior working surface of the first sidewall of the guideway beam frame and the exterior working surface of the first sidewall of the inner beam are generally horizontally curved. The interior working surface of the second sidewall of the guideway beam frame and the exterior working surface of the second sidewall of the inner beam are generally horizontally straight.
The distance between the interior working surface of the first sidewall of the guideway beam frame and the exterior working surface of the first sidewall of the inner beam is generally equal to the length of the tie-bar locking means along their (sidewalls') lengths under the straight state. These working surfaces lock up the tie bars by squeezing the tie-bar locking means under the straight state. During that time the exterior working surface of the second sidewall presses against the inner surfaces of the guide plate holders of the second guide plate.
The distance between the interior working surface of the second sidewall of the guideway beam frame and the exterior working surface of the second sidewall of the inner beam is generally equal to the length of the tie-bar locking means along their (sidewalls') under the bent state. These working surfaces lock the tie bars by squeezing the tie-bar locking means under the bent state. During that time the working surface of the exterior working surface of the first sidewall presses against the inner surfaces of the guide plate holders of the first guide plate.
In the mid-beam segment of the guideway beam, the interior working surface of the first sidewall of the guideway beam frame and the exterior working surface of the first sidewall of the inner beam are generally horizontally straight. The interior working surface of the second sidewall of the guideway beam frame and the exterior working surface of the second sidewall of the inner beam are generally horizontally curved. The distance between the interior surface of the second sidewall of the guideway beam frame and the exterior surface of the second sidewall of the inner beam is generally equals to the second tie-bar locking means along their lengths under the straight state. These working surfaces lock the tie bars by squeezing the tie-bar locking means under the straight state. During that time the working surface of the exterior working surface of the first sidewall presses against the inner surfaces of the guide plate holders of the first guide plate.
The distance between the interior surface of the first sidewall of the guideway beam frame and the exterior surface of the first sidewall of the inner beam is generally equals to the second tie-bar locking means along their lengths under the bent state. These working surfaces lock the tie bars by squeezing the tie-bar locking means under the bent state. During that time the exterior working surface of the second sidewall presses against the inner surfaces of the guide plate holders of the second guide plate. in a similar fashion described above for the beam-end segment.
Thus, in every segment of the guideway beam, the working surface of one side of the guideway beam is pressed against the guide plate on that side, and all the tie bars are firmly locked up by the tie-bar locking means.
Third EmbodimentThe third embodiment of the turnout of this invention is generally identical to the second embodiment except that this embodiment is without the inner beam and the tie-bar locking means, and that the guideway beam may be of concrete construction. The third embodiment of the turnout includes a guideway beam with first and second sides with holes for the tie bars. A hole on one side of the guideway beam communicates with a hole on the other side of the guideway beam. The guide plate assembly includes first and second guide plates, guide plate holders, and tie bars. The guide plate holders of the first guide plate on the first side of the guideway beam and the guide plate holders of the second guide plate on the second side of the guideway beam are connected by the tie bars.
Under the straight state, the first guide plate holders presses against the working surface of the first side of the guideway beam in the mid-beam segments, and the second guide plate holders presses against the working surface of the second side of the guideway beam in the beam end segments. Under the bent state, the first guide plate holders presses against the working surface of the first side of the guideway beam in the beam-end segments, and the second guide plate holders presses against the working surface of the second side of the guideway beam in the mid-beam segments.
The practicability of this embodiment, as is, totally depends on the flexibility and rigidity of the guide plates. To compensate the lack of the inner beams and the tie-bar locking means, the flexible guide plates will have to be made thicker than that in the second embodiment. It is also possible to add a plurality of either type of the locking means shown in
The fourth embodiment of this invention includes any number (including zero) of generally rigid guideway beams of type (B) of
An alternative design of this embodiment uses guideway beam types shown in (B) and (C) of
The fifth embodiment is conceptually identical to the fourth embodiment. This embodiment includes a plurality of generally rigid short guideway beams of type (A) of
An alternative design of this embodiment uses a plurality of “short” guideway beams of type (C) of
The sixth embodiment of this invention includes two generally rigid end beams and at least one generally rigid mid beam. The end beam has a half beam-long segment with one permanently horizontally straight (flat) working surface on each side; and the other segment with one flat working surfaces on each side under a straight state, and one curved surface on each side under a bent state. The mid beam has one flat working surface on each side under a straight state, and one curved surface on each side under a bent state. In addition, any number, including zero, of plain straight guideway beams of steel or concrete structure having two horizontally straight side surfaces [the type shown in (B) of
This embodiment uses cam assemblies as the means to change the curvature of the guide plates, and lock them at a given state. The imaginary plane that envelopes cam surfaces functions as the working surface of the guideway beam. At least one cam assembly extends along each side of the guideway beam. The cam assembly includes a plurality of cams mounted on a camshaft, which is rotatably connected to a driveshaft of a carriage assembly that carries the guideway beam. As in the fifth embodiment, the turnout of this embodiment may also be used as a multi-state turnout. The cam assemblies adjust the curvatures of the guide plates to the current turning angle (of the guideway beams) as the beam turns, and the turnout will have the correct guide plate curvature wherever the turnout stops turning.
All embodiments of the proposed turnout of this invention may be used in a double crossover. The double crossover may use four identical turnouts, wherein the carriage assemblies that carry the guideway beams of the turnouts operate on specially arranged tracks as shown in
The above description and other objects and advantages of this invention will become more clearly understood from the following description when considered with the accompanying drawings. It should be understood that the drawings are for purposes of illustration only and not by way of limitation of the invention. In the drawings, like reference characters refer to the same parts in the several views:
The turnout 1 of the preferred embodiment of this invention comprises a plurality of serially aligned guideway beams (see
The inner beams 20 and 21 are pivotable about X1 and X2, respectively. In the beam-end segments 2 of the guideway beam 5, the guideway beam frame 10 has a first sidewall with a horizontally convexly curved exterior working surface along an arc BE, and a second sidewall with a flat exterior working surface a straight line CF. An alternative design the guideway beam uses a guideway beam frame with a flat first sidewall with guide plate support means affixed to the external surface of the frame to form a convexly curved working surface. In this case, the surface (or plane) formed by the group of working surfaces of the guide plate support means of the guideway beam, is collectively called the working surface of the first sidewall (see
Similarly in the beam-end segment of the guideway beam 6, the guideway beam frame 11 has a first sidewall with a horizontally convexly curved exterior working surface along an arc BG, and a second sidewall with a flat (or horizontally straight) exterior working surface along a straight line CH.
In a mid-beam segment 4 of the guideway beam 5, that is between two pivot points (see
The inner beam 20 has a pivot point X1 about which the beam pivots, and the inner beam 21 has a pivot point X2. In the beam-end segment 2, the inner beam 20 has a working surface of the first sidewall (formed by working surfaces of guide plate support means protruding from the first sidewall of the inner beam) along a horizontally straight line (B′E), and a working surface of the second sidewall (formed by working surfaces of guide plate support means protruding from the second sidewall of the inner beam) along a horizontally curved (concave) arc (C′F).
Similarly in the beam-end segment 2C, the inner beam 21 has a working surface of the first sidewall along a horizontally straight line (B′G′), and a working surface of the second sidewall along a horizontally convexly curved arc C′H′.
In the mid-beam segment 4, the inner beam 20 has first sidewall with a working surface along a horizontally convexly curved arc (A′E), and a second sidewall with a working surface along a horizontally straight line (D′F).
An arc A′EBG in
When the turnout changes its state from the straight state to the bent state, the end beam 6 turns about a pivot point X by θ relative to the mid beam 5, but the inner beams 20 and 21 stay generally at the same position relative to each other as before the turning.
As is shown in
The end beam 6 comprises a guideway beam frame 11, an inner beam 21, and a power rail and communication cables. The frame 11 of the end beam 6 is generally of rigid construction, and includes the first and second sidewalls. The inner beam 21 looks like the inner beam 20 that is twice as long, but cut off in one half, and includes a plurality of guide plate support means 22, an inner beam support pivot 28, an inner beam support pivot holder 29. The inner beam 20 of the mid beam 5 and the inner beam 21 of the end beam 6 are slidably connected together by a joint means 32. Gear teeth 36 are affixed to the end walls of the inner beams 20 at the middle of the guideway beam, and mesh together. In an alternative design, the inner beam 20 of the mid beam 5 and the inner beam 21 of the end beam 6 are rigidly connected together by a joint means or by bolts and nuts. In the turnout with rigidly connected inner beams, each of the pivot holders must allow sliding of the inner beam it carries in longitudinal directions. In the special case of the preferred embodiment as shown in
The guide plate assembly 40 comprises guide plates 40-1, 40-2, and a plurality of guide plate holders 47, guide plate-end holders 49, and tie bars 42. The guide plate holders slidably hold the guide plates 40-1 and 40-2, and are connected by tie bars 42 that are slidably received by the cylindrical inner space of the guide plate support means 22. The guide plate-end holder 49 slidably holds guide plate ends. The guide plate-end holders 49 are affixed to the guideway beam frame 10 (or 11) at the boundary between the segments 2, and 4. The guide plates 40-1 and 40-2 are generally of half the length of the guideway beam. The guide plate 40-1 (or 40-2) may be of a single plate or a plurality of plates, and is flexible enough to bend under the bend state. The guide plate 40-1 and 40-2 can be as short as a quarter of the guideway beam length, and can be as long as practicable. In an alternative design, the guide plates are spanned between the mid point of the guideway beam and the mid point between the neighboring guideway beams. In the alternative design, the guide plate-end holders are affixed to the ends of the tie bars, and the guide plate holders at the boundaries between the beam-end segment and the mid beam segment are affixed to the guideway beam.
In the preferred embodiment, which embodies a turnout of the monorail system, the guide plate has a running surface on which the guide wheels run. In alternative designs of the turnout that embody maglev systems, the guide plates do not need a running surface.
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The turnout of the second embodiment of this invention has a different guideway beam design from the preferred embodiment. Otherwise, this embodiment is generally identical to the turnout of the preferred embodiment.
A straight solid line AE and curved solid line EB represent the working surfaces of the first sidewalls of the guideway beam frame 10′, and a curved line DF and a straight line FC represent the working surfaces of the second sidewalls of the guideway beam frame 10′. (note that the guideway beam frame's sidewall has two working surfaces, and both sidewalls are represented by the same line). A straight solid line A′E′ and curved solid line E′B′ represent the working surfaces of the first sidewalls of the inner beam 20′, and a curved line D′F′ and a straight line F′C′ represent the working surfaces of the second sidewalls of the inner beam 20′. Under the straight state, the working surface pair EB and E′B′, and another working surface pair FD and F′D′ are same distance d apart along their lengths under the bent state, where EE′=d and BB′=d and FF′=d and DD′=d. Here, the external surface of the first sidewall of the inner beam, and the internal surface of the first sidewall of the guideway beam frame are actively engaged working surfaces.
Under the straight state, AA′ is greater than EE′, and CC′ is greater than FF′. Under the bent state, the working surface pair AE and A′E′, and another working surface pair FC and F′C′ are same distance d apart along their lengths, where AA′=d and EE′=d, and FF′=d and CC′=d. Here, the external surface of the first sidewall of the inner beam, and the internal surface of the first sidewall of the guideway beam frame are actively engaged working surfaces. Under the bent state, BB′ is greater than EE′, and DD′ is greater than FF′. The working surfaces of the sidewalls of the guideway beam frame 11′ are shown by solid lines, and the working surfaces of the sidewalls of the inner beam 21′ is shown by dotted lines. Generally the same phenomena observed, in the beam-end segment 2′ of the mid beam 5′ is also observed in the beam-end segment 2′ of the end beam 6′. Straight lines AG and DH in
The end beam 6′ comprises a guideway beam frame 11′, an inner beam 21′, a power rail and communication cables, and shares at least one guide plate assembly 40′ and an articulated joint with the mid beam 5′. The frame 11′ of the end beam 6′ includes the first and the second sidewalls. A joint means 36′ articulately connect the inner beams 20′ and 21′. The inner beam 21′ is generally identical to half of the inner beam 20′ that is twice as long. The inner beams 20′ and 21′ may be slidably connected, or rigidly connected by bolt and nuts.
As is shown in
It must be apparent that the second embodiment of this invention is also applicable to the aforementioned maglev systems.
Third Embodiment The turnout of the third embodiment has neither the inner beams nor the tie-bar locking means of the second embodiment. Otherwise, the design of the steel version of the turnout of this embodiment is generally identical to the turnout of the second embodiment.
The design of the guide plate assembly 40″ is generally identical to the guide plate assembly 40′ of the second embodiment except that the guide plates 40-1″ and 40-2″ should be much wider than the guide plates 40-1′ and 40-2′ to compensate the lack of the inner beams and the tie-bar locking means. The guide plate assembly includes guide plates 40-1″ and 40-2″ on the sides of the guideway beam; tie bars 42″ that extend laterally along the internal space of the holes in the guideway beam, guide plate holders 47″, and guide plate-ends holders 49″.
As is shown in
It must be apparent that the third embodiment is also applicable to the aforementioned maglev systems. The guideway beams of this embodiment may be made of reinforced concrete or pre-stressed concrete.
Fourth Embodiment Referring to
The fourth embodiment of the turnout includes stationary carriage assembly locking means 90-1X (and 91-2X), mechanically lifted/lowered carriage assembly locking means 91-1X, tie-bar locking means 92-1X and tie-bar locking means 92-2X that are placed alongside the outer edge next to the guideway beams 5X of the turnout. The stationary tie-bar locking means 92-1X and the straight sidewall surface of the guideway beam 10X squeeze the guide plate holders 47X, and lock the tie bars 42×under the straight state. The stationary tie-bar locking means 92-2X alongside the outer edge next to the guideway beams 5X of the turnout, and the straight sidewall surface of the guideway beam 10X squeeze the guide plate holders 47X, and lock the tie bars 42×under the bent state. The guide-plate holders 49X that slidably receive 40-1X and 40-2X are located generally at generally the longitudinal mid point of the guideway beam 5X, and the beam end of the guideway beam 6X that is closer to the guideway beam 5X. The guide plate-end holders at the mid point of the guideway beam 5X are affixed neither to the guideway beam not to the tie bars 42X. The guideway beam 6X has a short segment near the beam end next to the guideway beam 5X that is equipped with guide plates on the sides of the guideway beam. The short segment has two guide plate-ends: one at the beam end of the beam 6X, and the other at the end of the segment where the guide plates terminate. Those guide plate-end holders are affixed to the guideway beam 6X. At the fixed end of the turnout, the guideway beam 5X is connected to the first guideway beam of the non-turnout segment by an articulated joint.
An alternative design uses guideway beam types (C) and (B) of
As is shown in
The guide plate assembly comprises first guide plate 40-1Y and second guide plate 40-2Y, guide plate holders including those that hold continuous guide plate segment 47Y (or continuous guide plate holders as shown in
The tie-bar holder does not necessarily have to be affixed to the guideway beam 5Y itself. If we call a portion of the turnout that comprising the guideway beam 5Y and the two carriage assemblies 60Y that carries the guideway beam “a guideway beam unit,” wherein neighboring guideway beam units share a carriage assembly, then as long as the guideway beam unit is equipped with at least one tie-bar holder, the intended purpose of having the tie-bar holder is achieved. For example, referring to
The guide plate 40-1Y (or 40-2Y) may be of single plate design or of multi-ply design. The guide plates 40-1 and 40-2 are slidably held by guide plate holders 47Y and the guide plate-end holders in 49Y, wherein two guide plate ends are slidably received. The guide plate-end holders 49Y are affixed to the sidewalls of the tie-bar holders 31Y that are located longitudinally at the mid point of the guideway beams 5Y, and the guide plate holders 47Y are affixed to the sidewalls of the carriage assembly 60Y. The guide plate holders 47Y and the guide plate-end holders 49Y are exchangeable. In the two-state turnout, the guide plate-end holder 49Y presses against the sidewall of the tie-bar holder 31Y of the same side under a locked state. The guide plate-end holder enables the tangent of the working surface of one guide plate matches the tangent of the working surface of the other guide plate under all times. The guide plate 40-1Y and 40-2Y can be as short as half the guideway beam length, and can be as long as practicable.
The drive means 68Y includes at least one motor and one driveshaft in any arbitrary segment of the turnout, wherein disconnected driveshafts in neighboring segments are rotatably connected to one another by a properly adjusted gear set; and gear sets that rotatably connect the driveshaft and the wheels of the carriage assembly 60Y. The guideway beams 5Y are laid on slidable plates placed on the carriage assemblies 60Y. A pivot 16Y is affixed to the carriage assembly 60Y. The pivot 16Y is pivotably connected to one of the guideway beams 5Y, and pivotably and slidably connected to the other guideway beams 5Y, wherein the pivot 16Y is slidable along the longitudinal centerline of the guideway beam 5Y. This embodiment is especially effective in the following two cases: (1) when used in a double crossover, wherein the bogie-carrying tracks are laid in such a manner that the gaps between the guideway beams created under the bent state may be generally equally distributed among all or selected gaps as shown in
The guideway beam 6Y is articulately connected to the guideway beam 5Y by an articulated joint means, and the beam ends of 6Y and 5Y are carried by the carriage assembly 60Y. The guideway beam 6Y is carried by at least two carriage assemblies, one carriage assembly at each end of the guideway beam. The carriage assemblies in mid-span of the guideway beam 6Y has a pivot 16Y′ that pivotally connect the guideway beam 6Y and the carriage assembly 60Y′. The pivot 16Y′ is held by a pivot holder that is slidable along the longitudinal centerline of the guideway beam 6Y. To enable the use of a taller guideway beam 6Y than the guideway beam 5Y, the surface of the carriage assembly bed beneath the guideway beam 6Y may have to be lowered. At the fixed end of the turnout, the guideway beam 5Y is articulately connected to the first guideway beam of the non-turnout segment.
The turnout is driven by at least one motor 62Y that is rotatably connected to the driveshaft 66Y by at least one gear set. The driveshaft 66Y, in turn, is rotatably connected to the wheels by at least one gear set The guideway beams 5Y are kept in a locked position by stationary carriage assembly locking means 90-1Y (or 90-2Y), stationary tie-bar locking means 92-1Y (or 92-2Y), and mechanically operated carriage assembly locking means 91-1Y (or 91-2Y). The locking means and rails for the bogie wheels are laid on the carriage assembly bed. The guideway beams 6Y are kept in a locked position by mechanically operated carriage assembly locking means 91-1Y (or 91-2Y). Referring to
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The guide plate assembly 40Z comprises guide plates 40-1Z and 40-2Z, and a set of guide plate holders (guide plates holders 47Z, and guide plate-end holders 49Z), and tie bars 42Z that connect the holders 47Z and 49Z of the two guide palates. In the guideway beam 5Z, the guide plate-end holders 49Z are affixed to the guideway beam frame 10Z at a quarter beam length away from the nearest guideway beam ends along the sides of the guideway beam frame. In the end beam 6Z, the guide plate holders 49Z affixed to the boundary between the beam end segment and the plain box beam segment.
The same drive means, carriage assembly and carriage assembly beds as those illustrated in
Alternative Guideway Beam Design
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The same drive means, carriage assembly and guideway beam support as those illustrated in
Other Alternative Designs
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The turnout may be equipped with a lubrication system that includes oil pump and a network of oil pipes. The turnout will be controlled by a turnout control system that is connected to the control system that is connected to a wayside signal system. Both the lubrication system and control system are not included in this specification.
The invention having been described in detail in accordance with the requirements of the U.S. Patent Statutes, various other changes and modifications will suggest themselves to those skilled in this art. It is intended such changes and modifications shall fall within the spirit and scope of the invention defined in the appended claims.
Claims
1. A turnout of a guideway beam-based transit system comprising a plurality of serially aligned guideway beams, at least one guide plate assembly, a drive means, at least one carriage assembly bed, and a plurality of carriage assemblies, wherein
- at least two of said guideway beams having a guideway beam frame and at least one inner beam,
- said frame of said guideway beam being generally of rigid construction, and
- said guideway beam having a plurality of guideway segments, wherein
- said guideway beam frame in said guideway segment having first and second sidewalls,
- said sidewalls having working surfaces in at least two of said guideway beam segment,
- said working surface of said first sidewall of said guideway beam frame, and said working surface of said second sidewall of said guideway beam frame having horizontally different curvatures in at least one of said guideway segments.
2. The turnout of a guideway beam-based transit system as defined in claim 1, wherein
- said guide plate assembly having first guide plate and second guide plate, a plurality of guide plate holders, and a plurality of tie bars,
- said first and second guide plates being held by said guide plate holders, and
- said guide plate holder of said first guide plate and said guide plate holder of said second guide plate being affixed to said tie bar.
3. The turnout of a guideway beam-based transit system as defined in claim 1, wherein
- said guide plate assembly having first guide plate, second guide plate, and a plurality of tie bars, and
- said first and second guide plates being connected to said tie bar.
4. The turnout of a guideway beam-based transit system as defined in claim 1, wherein
- said first and second guide plates slidably being held by said guide plate holders.
5. The turnout of a guideway beam-based transit system as defined in claim 1, wherein
- said first and second sidewalls of said guideway beam frame having a plurality of holes,
- said tie bars of said guide plate assembly extend through said holes of said first and second sidewalls.
6. The turnout of a guideway beam-based transit system as defined in claim 1, wherein
- said inner beam of one of said guideway beams and said inner beam of another one of said guideway beams being slidably connected together.
7. The turnout of a guideway beam-based transit system as defined in claim 1, wherein
- said inner beam of one of said guideway beams and said inner beam of another one of said guideway beams being rigidly connected together.
8. The turnout of a guideway beam-based transit system as defined in claim 1, wherein
- said guide plate having a running surface for guide wheels.
9. The turnout of a beam-based transit system as defined in claim 1, wherein
- said guideway beam including a plurality of gate-shaped track bed support frames, wherein
- said gate-shaped support frame having a top member and side members,
- said tie bar being affixed to said side members,
- said gate-shaped track bed support frame being mounted on said top member of said guideway beam frame.
10. The turnout of a guideway beam-based transit system as defined in claim 1, wherein
- said turnout having two states,
- said two states being a straight state and a bent state,
- said guideway beams being separated by a generally acceptable distance under said bent state.
11. The turnout of a guideway beam-based transit system as defined in claim 1 wherein
- said turnout having an expandable guideway beam.
12. The turnout of a guideway beam-based transit system as defined in claim 1 wherein
- said turnout having a plurality of carriage assembly locking means.
13. The turnout of a guideway beam-based transit system as defined in claim 1 wherein
- said turnout having first and second states,
- said frame having first and second sidewalls,
- each of said first and second sidewalls of said sidewalls having a working surface,
- each of said first and second sidewalls of said frame having a plurality of holes,
- said inner beam having first and second sidewalls,
- each of said first and second sidewalls of said inner beam having a plurality of guide plate support means, and
- each of said guide plate support means of said first sidewall having a working surface.
14. The turnout of a guideway beam-based transit system as defined in claim 1 wherein
- said turnout having first and second states,
- said frame having first and second sidewalls,
- each of said first and second sidewalls of said frame having a working surface,
- said inner beam having first and second sidewalls,
- each of said first and second sidewalls of said inner beam having a working surface,
- said working surface of said first sidewall of said frame and said working surface of said first sidewall of said inner beam being separated by a generally equal distance along their lengths under said first state, and
- said working surface of said second sidewall of said frame and said working surface of said second sidewall of said inner beam being separated by a generally equal distance along their lengths under said second state.
15. A turnout of a guideway beam-based transit system comprising a plurality of serially aligned guideway beams, at least one guide plate assembly, a drive means, at least one carriage assembly bed, and a plurality of carriage assemblies, wherein
- said guideway beam having at least one guideway beam segment,
- said guideway beam being generally of rigid construction.
- said guideway beam in said guideway beam segment having first and second sides,
- said first side and second side having a working surface in at least one of said guideway beams, and
- said working surface of said first side of said guideway segment and said working surface of said second side of said guideway segment having horizontally different curvatures.
16. The turnout of a guideway beam-based transit system as defined in claim 15, wherein
- said guide plate assembly having first guide plate and second guide plate, a plurality of guide plate holders, and a plurality of tie bars,
- said first and second guide plates being held by said guide plate holders, and
- said guide plate holders of said first guide plate and said guide plate holders of said second guide plate being affixed to said tie bar.
17. The turnout of a guideway beam-based transit system as defined in claim 16, wherein
- said turnout having first and second outer edges,
- said turnout having a plurality of locking means along said first outer edge, in at least selected segment of said first outer edge,
- said turnout having a plurality of locking means along said second outer edge, in at least selected segment of said second outer edge,
- said locking means on said first outer edge press against said guide plate holders of said first guide plate, and
- said locking means on said second outer edge press against said guide plate holders of said second guide plate.
18. The turnout of a guideway beam-based transit system as defined in claim 15, wherein
- said guide plate assembly having first guide plate, second guide plate, and a plurality of tie bars, and
- said first and second guide plates being connected to said tie bar.
19. The turnout of a guideway beam-based transit system as defined in claim 15, wherein
- said first and second guide plates slidably being held by said guide plate holders.
20. The turnout of a guideway beam-based transit system as defined in claim 15, wherein
- said guide plate having a running surface for guide wheels.
21. The turnout of a guideway beam-based transit system as defined in claim 15, wherein
- said turnout having two states,
- said two states being a straight state and a bent state,
- said guideway beams being separated by a generally acceptable distance under said bent state.
22. The turnout of a guideway beam-based transit system as defined in claim 15 wherein
- said turnout having an expandable guideway beam.
23. The turnout of a guideway beam-based transit system as defined in claim 15, wherein
- said guideway beam including a plurality of gate-shaped track bed support frames, wherein
- said gate-shaped support frame having a top member and side members,
- said tie bar being affixed to said side members,
- said gate-shaped track bed support frame being mounted on said top member of said guideway beam frame.
24. The turnout of a guideway beam-based transit system as defined in claim 15, wherein
- at least in one of said guideway beams said first working surface being flat, and
- said second working surface being concavely curved.
25. The turnout of a guideway beam-based transit system as defined in claim 15, wherein
- said turnout having carriage assembly locking means.
26. The turnout of a guideway beam-based transit system as defined in claim 16, wherein
- said turnout having tie bar locking means,
- metal means affixed to said tie bar, and
- said tie-bar locking means and said metal means lock up said tie bar under a locked state.
27. The turnout of a guideway beam-based transit system as defined in claim 15, wherein
- said guideway beam being of steel structure.
28. The turnout of a guideway beam-based transit system as defined in claim 15, wherein
- said guideway beam being of concrete construction.
29. A turnout of a guideway beam-based transit system having at least one segment comprising a plurality of serially aligned guideway beams, at least one guide plate assembly, a drive means, at least one carriage assembly bed, and a plurality of carriage assemblies, wherein
- said guideway beam generally of rigid construction,
- said carriage assembly having first and second sides,
- said guideway beam having first and second longitudinal ends,
- facing longitudinal first and second ends of two neighboring guideway beams being slidably mounted on said carriage assembly,
- a pivot being affixed to top surface of said carriage assembly,
- said pivot pivotably connected to one of said neighboring guideway beams having said first end,
- said pivot pivotably and slidably connected to the other of neighboring said guideway beams having said second end,
- said guide plate assembly having first guide plate and second guide plate, a plurality of guide plate holders, and tie bars,
- said first guide plate being slidably held by said guide plate holders,
- said guide plate holder of said first guide plate being affixed to said first side surface of said carriage assembly, and said guide plate holders of said second guide plate being affixed to said second side surface of said carriage assembly, and
- said guide plate holder of said first guide plate being affixed to said first side surface of said tie bar, and said guide plate holders of said second guide plate being affixed to said second side surface of said tie bar.
30. The turnout of a guideway beam-based transit system as defined in claim 29, wherein
- said guideway beam and two of said carriage assemblies on which said guideway beam being mounted on forming a guideway beam unit,
- said guideway beam unit having at least one tie-bar holder,
- said tie bar holder having first and second sides,
- said first side of said tie bar holder and said first side of said carriage assemblies forming a first working surface,
- said second side of said tie bar holder and said second side of said carriage assemblies forming a second working surface,
- said first and second working surfaces having different curvatures under a locked state.
31. The turnout of a guideway beam-based transit system as defined in claim 29, wherein
- said first and second guide plates slidably being held by said guide plate holders,
- said carriage assembly bed having a plurality of carriage assembly locking means.
32. The turnout of a guideway beam-based transit system as defined in claim 29, wherein
- said turnout having two states,
- said two states being a straight state and a bent state,
- said guideway beams being separated by a generally acceptable distance under said bent state.
33. A turnout of a guideway beam-based transit system comprising a plurality of guideway beams, at least one guide plate assembly, a drive means, at least one carriage assembly bed, and a plurality of carriage assemblies, wherein
- said guideway beam being generally of rigid construction,
- said guideway beam having first and second sides,
- at least one of said guideway beams having a plurality of cam assemblies along first and second sides of said guideway beam, wherein
- said cam assembly having a camshaft and a plurality of cams,
- said cam being coaxially mounted on said camshaft, and
- said cam shaft rotatably connected to said drive means.
34. The turnout of a guideway beam-based transit system as defined in claim 33, wherein
- said cam having a cam surface,
- a plurality of said cam surface of cams on first side of said guideway beam having first imaginary plane enveloping said cam surfaces,
- said first imaginary plane being working surface of said first side of said guideway beam,
- a plurality of said cam surface of cams on same side of said guideway beam having second imaginary plane enveloping said cam surfaces,
- said second imaginary plane being working surface of said second side of said guideway beam, and
- said working surface of said first side and said working surface of said second side having generally identical horizontal curvature along lengths of said working surfaces.
35. The turnout of a guideway beam-based transit system as defined in claim 33, wherein
- said guide plate assembly having first guide plate and second guide plate, a plurality of guide plate holders, and a plurality of tie bars,
- said first and second guide plates being held by said guide plate holders, and
- said guide plate holders of said first guide plate and said guide plate holders of said second guide plate being affixed to said tie bar.
36. The turnout of a guideway beam-based transit system as defined in claim 33, wherein
- said guide plate assembly having first guide plate, second guide plate, and a plurality of tie bars, and
- said first and second guide plates being connected to said tie bar.
37. The turnout of a guideway beam-based transit system as defined in claim 33, wherein
- said first and second guide plates slidably being held by said guide plate holders.
38. The turnout of a guideway beam-based transit system as defined in claim 33, wherein
- said guideway beam having a frame,
- said frame having first and second sidewalls,
- said first and second sidewalls of said frame having a plurality of holes,
- said tie bars of said guide plate assembly extend through said holes of said first and second sidewalls.
39. The turnout of a guideway beam-based transit system as defined in claim 33, wherein
- said guide plate having a running surface for guide wheels.
40. The turnout of a guideway beam-based transit system as defined in claim 33, wherein
- said guideway beam including a plurality of gate-shaped track bed support frames, wherein
- said gate-shaped support frame having a top member and side members,
- said tie bar being affixed to said side members,
- said gate-shaped track bed support frame being mounted on said top member of said guideway beam frame.
41. The turnout of a guideway beam-based transit system as defined in claim 33, wherein
- said turnout having two states,
- said two states being a straight state and a bent state,
- said guideway beams being separated by a generally acceptable distance under said bent state.
42. The turnout of a guideway beam-based transit system as defined in claim 33 wherein
- said turnout having an expandable guideway beam.
43. A turnout of a guideway beam-based transit system comprising a plurality of guideway beams, at least one guide plate assembly, a drive means, at least one carriage assembly bed, and a plurality of carriage assemblies, wherein
- said turnout having two states,
- said two states being a straight state and a bent state,
- said guideway beams being separated by a generally acceptable distance under said bent state.
44. The turnout of a guideway beam-based transit system as defined in claim 43, wherein
- said guide plate having a running surface for guide wheels.
45. The turnout of a guideway beam-based transit system as defined in claim 43, wherein
- said turnout having first and second outer edges,
- said turnout having a plurality of locking means along said first outer edge, in at least selected segment of said first outer edge,
- said turnout having a plurality of locking means along said second outer edge, in at least selected segment of said second outer edge,
- said locking means on said first outer edge press against said guide plate holders of said first guide plate, and
- said locking means on said second outer edge press against said guide plate holders of said second guide plate.
46. A turnout of a guideway beam-based transit system comprising a plurality of guideway beams, at least one guide plate assembly, a drive means, at least one carriage assembly bed, and a plurality of carriage assemblies, wherein
- said turnout including an expandable guideway beam.
47. The turnout of a guideway beam-based transit system as defined in claim 46, wherein
- said guide plate having a running surface for guide wheels.
48. The turnout of a guideway beam-based transit system as defined in claim 46, wherein
- said turnout having first and second outer edges,
- said turnout having a plurality of locking means along said first outer edge, in at least selected segment of said first outer edge,
- said turnout having a plurality of locking means along said second outer edge, in at least selected segment of said second outer edge,
- said locking means on said first outer edge press against said guide plate holders of said first guide plate, and
- said locking means on said second outer edge press against said guide plate holders of said second guide plate.
Type: Application
Filed: Jan 20, 2005
Publication Date: Aug 11, 2005
Inventor: Masami Sakita (Palo Alto, CA)
Application Number: 11/040,327