SNOW REMOVAL VEHICLE
A snow removal vehicle is described and it has an enclosed snow melting chamber provided with a plurality of high pressure steam jets which are connected to one or more steam generators. The enclosed snow melting chamber has a water collecting reservoir in a lower portion thereof below a bottom wall of the snow melting chamber. The bottom wall has passages to channel water from the snow melting chamber to the water collecting reservoir. The vehicle body has a front entry opening communicating with the snow melting chamber and an auger screw is mounted in the front entry opening to eject snow inside a forward end of the snow melting chamber. Snow propelling wheels are secured along at least a front end portion of the snow melting chamber to propel snow ejected from the auger along the snow melting chamber for contact by the high pressure steam to melt the snow. An outlet evacuating valve is provided to evacuate water collected in the water collecting reservoir. The vehicle may also be equipped with a hopper shute for use in a stationary mode to melt snow dumped in the shute.
The present invention relates to a snow removal road vehicle using high pressure steam jets to melt the snow inside an enclosed snow melting chamber of the vehicle.
BACKGROUND ARTSnow removal vehicles or containers are known wherein snow is collected and dumped into a container which is provided with conduits through which hot gases flow and which are located close to a top end of these containers whereby snow positioned thereon will melt and the water accumulate at the bottom of the container. Baffle plates are provided so that only water can percolate down into the reservoir. A disadvantage of these is that the reservoirs are not displaceable and they are usually positioned in areas where large parking areas need to be maintained clear of snow. Snow removal vehicles with articulated buckets are required to transport the snow to the container. The container usually has a conduit which connects to the city sewer system to discharge water therefrom.
With reference to U.S. Pat. Nos. 4,785,561 and 5,588,231, it is also known to provide such containers on vehicles whereby to remove snow from streets and blow the snow into a container which contains boiler tubes. The boiler tubes, as shown in U.S. Pat. No. 4,785,561 melt the snow and water is evacuated from the vehicle. However, such snow melting systems have not been found satisfactory as they are too small and the conduit will clog up with snow rendering the vehicle's function ineffective. For snow removal applications on streets, such a vehicle is not practical. Also, there are insufficient heating means to melt the snow faster than it is discharged within the chamber. U.S. Pat. No. 5,588,231 describes a similar system although the vehicle is much larger. It is also provided with a boiler and a heater pipe system to circulate hot water therein. A snow blower is used to feed snow into a feeder chute which is of very long length and which obviously would clog up with snow rendering the entire vehicle ineffective. This system is deemed to be inoperable because of its many deficiencies. Further, the melting hopper is too small and would prevent the vehicle from operating at convenient speeds.
SUMMARY OF INVENTIONIt is a feature of the present invention to provide a snow removal vehicle which utilizes high pressure steam in an enclosed snow melting chamber of the vehicle to melt snow and wherein the water produced by the melted snow and condensed steam is collected in the snow melting chamber.
Another feature of the present invention is to provide a snow removal vehicle having an adjustable front entry opening to adjust the width of the path of the snow being removed from roads and wherein the snow is melted by contact with high pressure steam in an enclosed snow melting chamber of the vehicle, and the collected water in the chamber is drained therefrom into the public sewer system once the water collecting reservoir of the vehicle reaches a predetermined quantity.
Another feature of the present invention is to provide a snow removal vehicle which utilizes a single operator for its operation and reduces the amount of equipment normally required to clear snow from roads.
According to another feature of the present invention there is provided a snow removal vehicle wherein a hopper shute is removably securable to a frontal entry opening of the vehicle for guiding snow introduced from an open top end of the hopper shute to an auger screw permitting the vehicle to be used as a snow melting and transport vehicle.
According to the above features, from a broad aspect, the present invention provides a snow removal vehicle comprising a vehicle body having an enclosed snow melting chamber. The vehicle body is supported on traction means. An operator station is provided for an operator person. The vehicle body has an entry opening communicating with the snow melting chamber. Snow removal means is provided in the entry opening to eject snow inside a forward end of the snow melting chamber. The snow melting chamber has a water collecting reservoir in a lower portion thereof below a bottom wall of the snow melting chamber. Passage means are provided in the bottom wall to channel water from the snow melting chamber to the water collecting reservoir. A plurality of high pressure steam snow melting jets are disposed along the snow melting chamber to eject hot steam therealong. Snow propelling means is provided along at least a front end portion of the snow melting chamber to propel snow ejected from the snow removal means in the entry opening along the snow melting chamber for contact by the steam to melt the snow. Water evacuating means is provided to evacuate water collected in the water collecting reservoir.
A preferred embodiment of the present invention will now be described with reference to the accompanying drawings in which:
Referring to the drawings and more particularly to
As shown in
The front entry opening 11 is further provided with variable snow collecting means in the form of hinged plow side panels 23, as better shown in
With specific reference now to
A plurality of snow propelling means in the form of propelling wheels 32 are secured in the enclosed snow melting chamber 16 along at least the forward end portion 20 thereof to propel snow ejected from the auger screw 12 along the snow melting chamber and in contact with the high pressure steam from the high pressure steam ejecting jets 28 whereby to disperse the snow for contact with the high-pressure hot steam to melt the snow quickly. Water resulting from the melted snow and condensed steam is channeled within the water collecting reservoir 27 through openings 35 formed in the bottom wall 25 of the snow melting chamber 16. These passage openings 35 have a trough-like shaped wall section 36 and a sufficient number of these are provided whereby the water is evacuated quickly from the snow melting chamber to flow to the water collecting reservoir. Two or more level sensors 37, see
In order to evacuate the water from the reservoir 27 there is provided a drain pipe 38, hereinshown mounted in the rear wall 39 of the vehicle and it has a valve 40. A flexible conduit (not shown) is connected to the drain pipe whereby to channel the water from the water collecting reservoir into the city sewer system or elsewhere. Although not shown, one of the steam generators 14 may have another flexible hose connected thereto together with a mechanical rod having a control valve whereby to unblock a city sewer should a sewer be iced-in whereby the reservoir can be empty under any cold climate condition in the sewer system. The location of city sewers would also be accessible through stored information available in the control panel.
As more clearly illustrated in
It is also pointed out that the snow melting jets 28 may be connected in two or more groups along the snow melting chamber 16. Each group of snow melting jets may be secured to one or more steam generators 14. Each steam generator of each of the groups of jets is controlled through the control panel 32 in the cabin 31. This is accomplished, as shown in
Referring now to
In the embodiment of
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With reference to
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A slide wall 85 extends between and is secured to the parallel transverse side walls 84 by means such as welding along welds 86 and projecting downwards from a lower edge 84′ of the side walls 84.
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It is within the ambit of the present invention to cover any other obvious modifications of the preferred embodiment described herein provided such modifications fall within the scope of the appended claims. For example, it is contemplated to construct small versions of the vehicle to remove snow from driveways of residential housings and parking lots of shopping centers to prevent the accumulation of snow on valuable space or on city streets or residential land where homeowners would be required to hand shovel. Snow shoveling has been found to be hazardous to the health of certain individuals having weak heart or spinal chord problems. The smaller vehicle would also be equipped with a hose to evacuate water from the reservoir into the city sewer system. It would also be equipped with a small steam boiler and a vacuum boom.
Further, the smaller snow removal vehicle may have the back wheels articulatable as are the front wheels whereby the vehicle can maneuver around sharp corners. The snow removal vehicle 10, as hereinshown, is also particularly, although not exclusively, adapted to clear snow from main arteries where the roads are wide, long and straight. Also, a scraper means, in the form of a mechanical scraper or water jets, may be mounted adjacent the bottom wall 26 of the reservoir 27 to remove any accumulated sand or debris collected with the snow and transferred therein, and evacuated through a trap door provided in the bottom wall 26. Although not shown, water from the collecting reservoir can be recirculated into the steam generator to maintain the generators in operation.
Although the hopper shute as shown in the drawings is shown secured to the hinge plow side panels 23, it is also intended that if such side panels are not provided on the snow removal vehicle, the hopper shute can be secured otherwise to the front end of the snow removal vehicle, as is obvious to a person skilled in the art and again by a removable connection. Still further, the hopper shute can be secured to a pair of lift arms, one secured on each side of the hopper shute and of the vehicle, and which may be piston operated by the operator of the vehicle whereby the hopper shute can be displaced to a storage position over the front end of the vehicle, such as on top of the cab of the vehicle, and be brought down in front of the vehicle when necessary to utilize the snow removal vehicle with the hopper shute. This provides for a vehicle which can be quickly and easily converted for its use as a plow or as a stationary snow melting vehicle.
Claims
1. A snow removal vehicle comprising a vehicle body having an enclosed snow melting chamber, said body being supported on traction means, an operator station in said vehicle, said vehicle body having a frontal entry opening communicating with said snow melting chamber, snow removal means in said entry opening to eject snow inside a forward end of said snow melting chamber, said snow melting chamber having a water collecting reservoir in a lower portion thereof below a bottom wall of said snow melting chamber, passage means in said bottom wall to channel water from said snow melting chamber to said water collecting reservoir, a plurality of high pressure steam snow melting jets disposed along said snow melting chamber to eject hot steam therealong, snow propelling means along at least a front end portion of said snow melting chamber to propel snow ejected from said snow removal means in said entry opening along said snow melting chamber for contact by said steam to melt the snow, and water evacuating means to evacuate water collected in said water collecting reservoir.
2. A snow removal vehicle as claimed in claim 1 wherein said entry opening is a front entry opening provided with adjustable snow collecting means, said adjustable snow collecting means adjusting the width of a surface on which snow is collected and directed into said entry opening.
3. A snow removal vehicle as claimed in claim 2 wherein said adjustable snow collecting means is constituted by hinged plow side panels secured to opposed side edges of said front entry opening, and controllable pistons secured to said hinged plow side panels to independently position each said hinged plow panels with respect to said front entry opening.
4. A snow removal vehicle as claimed in claim 3 wherein said hinged plow side panels have a telescopic frontal section to adjust the length of said side panels.
5. A snow removal vehicle as claimed in claim 1 wherein there is further provided one or more monitoring cameras inside said snow melting chamber to monitor the operation of said snow melting jets.
6. A snow removal vehicle as claimed in claim 1 wherein said snow melting jets are secured to one or more steam generators by conduits, at least some of said conduits having control valves therein.
7. A snow removal vehicle as claimed in claim 1 wherein said snow removal means is an auger screw.
8. A snow removal vehicle as claimed in claim 6 wherein said conduits are provided with control valves controlled by switches provided on an operator control panel.
9. A snow removal vehicle as claimed in claim 8 wherein water level sensors are secured in said water collecting reservoir, said operator control panel having indicator means electrically connected to said level sensors to monitor the water level in said water collecting reservoir.
10. A snow removal vehicle as claimed in claim 1 wherein said propelling means is constituted by two or more elongated snow propelling wheels, each said elongated snow propelling wheels having a driven axle supported across opposed side walls of said enclosed snow melting chamber and spaced above said bottom wall, said axle having at least two elongated curved flat blades secured along opposed sides of said axle and extending outwardly therefrom and oriented to project snow received from said snow propelling means rearwardly into said snow melting chamber.
11. A snow removal vehicle as claimed in claim 10 wherein said axles have a driven end secured to drive means for rotating said axles in unison in a clockwise direction, said curved flat blades sloping in the direction of displacement of said blade to project snow disposed on a collection surface thereof upwardly and in a rearward direction in said snow melting chamber.
12. A snow removal vehicle as claimed in claim 1 wherein said entry opening is a front entry opening provided with a snow guiding ramp rearwardly of said snow removal means to guide snow in an upward direction in said forward end of said snow melting chamber.
13. A snow removal vehicle as claimed in claim 11 wherein said snow removal means is a driven auger screw supported across said entry opening.
14. A snow removal vehicle as claimed in claim 6 wherein said snow melting jets are connected in two or more groups along said snow melting chamber, each group of snow melting jets being secured to one or more steam generators associated with each said group, the operation of said steam generators of each said groups being controlled by a control panel operated by an operator person.
15. A snow removal vehicle as claimed in claim 14 wherein said snow melting jets have a connecting end secured to a steam pressure conduit, a pressure build-up formation in said snow melting jets to increase the pressure of said steam to a desired output pressure to rapidly melt said snow, and a pressure nozzle at a free end of said jets.
16. A snow removal vehicle as claimed in claim 15 wherein said pressure build-up formation is constituted by a progressively diminishing passage between said connecting end and said nozzle.
17. A snow removal vehicle as claimed in claim 16 wherein said nozzle is a small circular opening at said free end of said jets providing a beam of hot high pressure steam.
18. A snow removal vehicle as claimed in claim 16 wherein said nozzle is an outwardly flared narrow passage providing a wide flat beam of hot high pressure steam.
19. A snow removal vehicle as claimed in claim 15 wherein said desired output pressure is in the range of from about 20,000 psi to 30,000 psi.
20. A snow removal vehicle as claimed in claim 1 wherein there is further provided a vacuum suction articulated conduit to suck snow into a vacuum chamber inside said vehicle at said forward end of said snow melting chamber and transfer means to discharge said snow on said snow propelling means.
21. A snow removal vehicle as claimed in claim 20 wherein said vacuum chamber is constituted by an impeller chamber communicating with a rear end of said articulated conduit, a high speed impeller wheel in close fit with a curved inner wall portion of said impeller chamber to create a suction air flow in said articulated conduit and to propel snow sucked thereon through an outlet port of said impeller chamber and onto said snow propelling means.
22. A snow removal vehicle as claimed in claim 1 wherein there is further provided a metal detector secured at a front end of said vehicle body and projecting forwardly thereof to detect metal objects in said snow in the path of said vehicle, said metal detector providing a signal at said operator station for remedial action by an operator person to prevent damage to said vehicle.
23. A snow removal vehicle as claimed in claim 1 wherein there is further provided actuable ice abrading and removal means rearwardly of said snow removal means to abrade and brake ice formed on a road surface where snow is being removed and to propel said broken ice onto said snow propelling means.
24. A snow removal vehicle as claimed in claim 23 wherein said ice abrading and removal means is reconstituted by a steel brush actuated by an operator person in said operator station.
25. A snow removal vehicle as claimed in claim 24 wherein said broken ice is propelled onto said snow propelling means through a trap door and protective passage to prevent water from melted snow and ice from leaking out of said snow melting chamber.
26. A snow removal vehicle as claimed in claim 1 wherein said traction means comprises three sets of traction wheels, a front and rear set and an intermediate set, said intermediate set being supported elevated from said front and rear set and having a disconnectable drive coupling, said front and rear set being secured to a displaceable axle assembly wherein said front and rear set can be lifted to permit said intermediate set to engage a ground surface and be connected to a drive shaft by said drive coupling to permit independent operation of the wheels of said intermediate set to cause said vehicle to maneuver around abrupt street intersections.
27. A snow removal vehicle as claimed in claim 1 wherein a hopper shute is secured to said frontal entry opening and having circumferential side walls, an open top end and a slide wall for guiding snow introduced from said opening top end to said snow removal means in said entry opening.
28. A snow removal vehicle as claimed in claim 27 wherein said slide wall is angulated from a front side wall of said circumferential side walls to said snow removal means.
29. A snow removal vehicle as claimed in claim 28 wherein snow removal means is an auger screw.
30. A snow removal vehicle as claimed in claim 27 wherein there is further provided hinged plow side panels secured to opposed side edges of said entry opening, displaceable means secured to said hinged plow side panels to independently position each said hinged plow panels with respect to said front entry opening, said hopper shute being securable to said hinged plow panels by detachable connector means.
31. A snow removal vehicle as claimed in claim 30 wherein said detachable connector means are clamps interconnecting said hopper shute to said hinged plow panels with said panels disposed substantially parallel to one another and on a respective side of said entry opening.
32. A snow removal vehicle as claimed in claim 31 wherein said hopper shute circumferential side walls is comprised of said front side wall, a rear side wall, and parallel transverse side walls extending between said front side wall and rear side wall and forming said circumferential side walls rectangular in shape, said side wall extending between and secured to said parallel transverse side walls and projecting downwards from a lower edge of said circumferential side walls and in close fit between said hinge plow side panels.
33. A snow removal vehicle as claimed in claim 30 wherein said connector means are latch connectors.
Type: Application
Filed: Jun 8, 2010
Publication Date: Dec 16, 2010
Inventor: Antoine Trubiano (Montreal)
Application Number: 12/796,069
International Classification: E01H 5/10 (20060101);