METHOD OF ERECTING PORTABLE STRUCTURE AND RELATED APPARATUS
A method of erecting a tent includes a plurality of beam members comprising a roof portion and a pair of leg portions. A plurality of base members are securedly fixed to the ground surface. The beam assembly leg portions are pivotally coupled to the base members, pivoted to a vertical position, and secured to the base member to prevent further pivoting of the beam assembly. Extendable purlins couple adjacent beam assemblies to one another. A single piece fabric panel extends between the full length of a pair of adjacent beam assemblies. The fabric panels are tensioned by expanding the plurality of extendable purlins to increase the distance between the adjacent beam assemblies. Fabric panel tensioning is sequenced from the center of the structure outward.
1. Field of the Invention
The present invention relates to enclosures and, more particularly, to portable enclosure structures.
2. Description of the Related Art
Fabric-covered portable structures are a relatively common form of semi-permanent shelter. Such structures typically can withstand moderate to severe weather conditions over extended periods of time. However, fabric-covered structures are generally relatively expensive. Specialized equipment and skilled workers are typically required to erect and disassemble the structures. Their components generally are relatively large and difficult to transport.
In addition, the fabric of frame tents is typically only loosely secured to the frame of the portable structure. The loosely secured fabric can flap in the wind, thereby stressing the frame of the portable structure. The flapping of the fabric also generates unwanted noise. In some instances, the frame tent installation can provide a long-term protective structure, such as a military facility, inhabited and used as a working environment in a variety of extreme weather conditions. Such long-term installations can provide inadequate living and working conditions when excessive noise levels exist due to loose fabric installation that responds to high winds and other extreme weather elements. Accordingly, there is a need in the art for an improved portable structure and method of erecting a portable structure.
SUMMARY OF THE INVENTIONAccording to certain embodiments, a method of erecting a portable structure can comprise securing a plurality of base members to a support surface, assembling a plurality of beam members, wherein each of said beam members has a length and is configured to couple to a pair of said base members, coupling said plurality of beam members to said plurality of base members, and erecting said plurality of beam members about said pairs of said base members. The method of erecting a portable structure can further comprise coupling a plurality of transverse members between adjacent beam members, said transverse members establishing a plurality of spaced distances between said adjacent beam members, coupling a fabric to at least a pair of adjacent beam members of said plurality of beam members, said fabric extending from substantially adjacent a first base member to substantially adjacent a second base member. The method can still further comprise deciding whether to elongate at least one of said plurality of transverse members between said adjacent beam members to increase the length of said transverse member, wherein said increased length would facilitate tautly securing said fabric to said beam members.
In some embodiments, a method of erecting a portable structure can comprise securing a plurality of base members to a support surface, assembling a plurality of beam members, wherein each of said beam members has a length and is configured to couple to a pair of said base members, coupling said plurality of beam members to said plurality of base members, and erecting said plurality of beam members about said pairs of said base members. The method of erecting a portable structure can further comprise coupling a plurality of transverse members between adjacent beam members, said transverse members establishing a plurality of spaced distances between said adjacent beam members, coupling a fabric to at least a pair of adjacent beam members of said plurality of beam members, and elongating said plurality of transverse members in each spaced distance to increase the lengths of said transverse members, wherein said increased lengths facilitate tautly securing said fabric to said beam members. The method can still further comprise sequencing the elongating of said plurality of transverse members to begin at a spaced distance that is substantially centered between the plurality of spaced distances established between the plurality of adjacent beam members, wherein each subsequent elongating of said transverse members occurs at a spaced distance between beam members that is adjacent a spaced distance having elongated transverse members.
In order to better understand the embodiments of the disclosure and to see how it may be carried out in practice, some preferred embodiments are next described, by way of non-limiting examples only, with reference to the accompanying drawings, in which like reference characters denote corresponding features consistently throughout similar embodiments in the attached drawings.
With reference to
With reference to
The base plate 22 includes a top surface 30 and bottom surface 32, where the bottom surface interfaces with the support surface, or ground surface, that the portable tent structure 10 is assembled and installed upon. At least two apertures, or base openings 24, are similarly provided through the base plate 22, generally positioned adjacent opposing ends of the base plate 22. The opening 24 provide the access for coupling the base plate 22 to the support surface below the base member 20. A plurality of supports 34 are disposed on the top surface 30 of the base plate 22, and extend perpendicularly from the pivot plate 26 to an edge of the base plate 22. A smaller registration hole 36 is provided roughly through a center portion of the base plate 22, disposed adjacent a side of the pivot plate 26.
With reference to
In the illustrated embodiment of
In the illustrated embodiment of
The top-most point, and generally the center point or apex, of the roof portion 42 is established by the apex 50. The apex 50, as illustrated in
With reference to
With reference to
In the illustrated embodiment of
With reference now to
With reference to
The extension assembly 128 functions to extend or contract the longitudinal length of the adjustable purlin 120. The extension assembly includes a rotating body 130, a hexagonal portion 132, a first threaded portion 134, and a second threaded portion 136. The hexagonal portion 132 defines at least a portion of the outer surface of the rotating body 130. The rotating body 130 includes a threaded inner diameter that extends all of the way through the inner portion, or center, of the body 130. The first threaded portion 134 is fixedly attached to the extending end 122. The second threaded portion 136 is fixedly attached to the body member 126. The diameters of the threaded portions 134, 136 are generally the same size. The internally threaded rotating body 130 receives the first threaded portion 134 in a first end and the second threaded portion in a second end of the rotating body 130. The distance between the extending end 122 and the body member 126 can be varied by rotating the rotating body 130 about the first and second threaded portions 132, 134. The rotating body 130 can be rotated by using a conventional tool such as a wrench, or can be rotated by hand.
The adjustable purlin 120 can provide for a wide range of variable extension lengths, according to the suitable application of the purlin. In one embodiment, the adjustable purlin 120 can vary in length between approximately 0.5 and 5 inches, or more particularly between approximately 1 and 2 inches, or even more particularly between approximately 1 and 1.5 inches. For example, the rotating body can be lengthened to be capable to receive a longer threaded portion 134, 136, thereby allowing greater extension and compression of the extension assembly 128. In some embodiments, the adjustable purlin 120 can vary the extension length via multiple extension assemblies 128. In the assembled state, the adjustable purlins can maintain any given length established by the extension assembly 128 without changing length, or reciprocating between lengths anywhere from a fully extended and fully contracted position due to environmental loads on the portable structure 10. Thus, the adjustable purlin 120 is always in a fixed, or locked, configuration, regardless of the established length determined by the extension assembly 128.
With reference to
With reference now to
The location of one of the corner base members 20 preferably is determined first. A registration pin 36 (see
After the locations of the base members 20 have been properly marked, the base members 20 are placed over the registration pins 36 so that the registration pins 36 extend through the registration holes 34 in the base plates 23, as illustrated in
The base members 20 are secured to the ground to provide a rigid, fixed connection for the beam assemblies 40. The base members 20 can be secured to the ground with anchors, or stakes, 44 that extend into the ground through the openings 30 in the base plates 24, as illustrated in
With reference to
The roof portion 42 is preferably assembled beginning at one of the eaves 60. The insert 62 of the eave 60 fits into a first end of the short beam 70. The assembly preferably is carried out by two persons. One person holds the eave 60 and retracts the retractable buttons 64 extending from the insert 62 while the other person slides the first end of the short beam 70 over the insert 62. As illustrated in
The insert 74 of the short beam 70 fits into a first end of the long beam 80. The pair of openings 82 are provided in the first end of the long beam 80, as illustrated in
Referring again to
The other side of the roof portion 42, extending from the opposite eave 60 to the apex 50, is assembled in a similar fashion. After the roof portion 42 is assembled the leg portions 44 are assembled to the roof portion 42 to complete assembly of the beam assembly 40. The leg 90 is connected to each of the eaves 60 by sliding the insert 92 of the upper end of the leg 90 into the lower end of the eave 60 so that the buttons 94 are aligned with the openings 66. The retractable buttons 94 engage the openings 66 to lock the leg 90 to the eave 60.
With reference to
The beam assemblies can be assembled in any number of sequences, beginning with any component, the apex 50, eave 60, short beam 70, long beam 80, leg 90, or the base insert 100. Of particular importance is assembling all of the components of the beam assembly 40 before erecting any portion of the beam assembly 40 into a vertical position. Additionally, all, or a portion of all, of the beam assemblies can be assembled and laid out on the support, or ground, surface prior to proceeding to erect any of the beam assemblies. In some embodiments, the beam assemblies 40 can be assembled and erected one at a time, rather than assembling a portion or all of the beam assemblies 40 at one time. Upon assembly of the beam assemblies 40, the connection between the beam assembly and the base inserts 20 can be completed and the beam assemblies 40 rotated to a vertical position.
After each of the beam assemblies 40 has been assembled, an assembly cable (not shown) can be attached in a widthwise direction between the eaves 60 of each beam assembly 40. The assembly cables help to hold the beam assemblies 40 together during construction of the portable structure 10, and can later be removed if desired. Each of the eaves 60 can includes a bracket (not shown) for attachment of an end of one of the assembly cables.
With reference to
With reference now to
With reference to
When the first beam assembly 40 is substantially vertical, the second openings 110 in the pivot plates 104 of the base inserts 100 are aligned with the second openings 28 in the pivot plates 26 of the base members 20. The supports 34 on the top surface 30 of the base plates 22 provide a support saddle that positions the pivot plates 104 of the beam assemblies. The supports 34 reduce interference in aligning the fastener elements to couple the pivot plate 104 to the base member 20. The supports 34 provide for a quicker installation and reduced alignment issues, allowing a second bolt 162 to readily pass through the two plates 104, 26. The first beam assembly 40 is then secured to the base members 20 by passing the second bolt 162 through a second shackle, or clevis, 160 and the aligned second openings 28, 110, as illustrated in
The second beam assembly 40 is raised in a similar fashion. An adjustable purlin 120 is first attached by the purlin extension end 122 before raising the second beam assembly to the several brackets 56 of the apex 50, short beams 70, long beams 80, and eaves 60 of the second beam assembly 40 at a side of the beam assembly 40 that is opposite the first beam assembly 40. The second beam assembly 40 is then rotated upwardly from the ground, pivoting about the base members 20, as illustrated in
With continued reference to
The drop-in ends 124 of the adjustable purlins 120 are attached to the raised and vertical second beam assembly 40 by inserting the drop-in ends 124 into the plurality of brackets 56 at the apex 50 of the second beam assembly 40. A purlin lift tool 174 can be used to lift the adjustable purlin 120 into the bracket 56 at the apex 50 of the second beam assembly. The remaining adjustable purlin drop-in ends 124 are then connected to the plurality of brackets 56 located between adjacent corresponding short beams 70, long beams 80, and eaves 60 of the roof portions 42 of the first and second beam assemblies 40, as illustrated in
With reference to
The next to last beam assembly 40 preferably is raised without first connecting an adjustable purlin 120 to the apex 50 thereof. The beam assembly 40 is rotated upwardly from the ground, preferably with one person lifting at each side of the apex 50. When the beam assembly 40 is vertical, the second openings 110 in the pivot plates 104 of the base inserts 100 are aligned with the second openings 28 in the pivot plates 26 of the base members 20. The beam assembly 40 is then secured to the base members 20 by passing the second bolt 162 through the second shackle, or clevis, 160 and the aligned second openings 28, 110. The drop-in end 124 of the adjustable purlin 120 is then connected to the bracket 56 at the apex 50 of the next to last beam assembly 40 using the purlin lift tool 174. The remaining adjustable purlins 120 are connected between adjacent short beams 70, long beams 80, and eaves 60 of the roof portions 42 of the two adjacent beam assemblies 40.
The last, or end, beam assembly 40 preferably is raised in the same direction as the other beam assemblies were raised. In some embodiments, the end beam assembly 40 can be raised in the opposite direction of the previous beam assemblies 40. An adjustable purlin 120 is first pivotally attached to the bracket 56 at the apex 50 of the end beam assembly 40 before raising the end beam assembly 40. The end beam assembly 40 is then rotated upwardly from the ground, preferably with one person lifting at each side of the apex 50 and one or more persons pushing and controlling the roof portion 42 with the remaining adjustable purlins 120. When the roof portion 42 is vertical, the second openings 110 in the pivot plates 104 of the base inserts 100 are aligned with the second openings 28 in the pivot plates 26 of the base members 20. The beam assembly 40 is then secured to the base members 20 by passing a bolt 162 of a second clevis 160 through the aligned second openings 28, 110. The drop-in end 124 of the adjustable purlin 120 is then connected to the bracket 56 at the apex 50 of the next to last beam assembly 40 using the purlin lift tool 174. The remaining six adjustable purlins 120 are connected between adjacent short beams 70, long beams 80, and eaves 60 of the roof portions 42 of the third and fourth beam assemblies 40.
With reference to
The top panels 12 preferably are installed with the beam assemblies spaced apart a spaced distance that is less than the width of the top panel 12. To facilitate installation of the top panels 12, the adjustable purlins 120, which are adjustable in length, as described in detail above, can adjusted to a length that is smaller than the width of the top panel 12 if not previously adjusted to such length. During installation of the top panels 12, the reduced length of the adjustable purlins 120 decreases the distance between adjacent beam assemblies 40. An amount of slack is thereby created in the top panels 12. This serves to facilitate installation of the top panels 12 between the roof portions 42 of the beam assemblies 40.
With reference to
While two people feed the keders 170 into the keder tracks 48 at one side of the portable structure 10, two other people pull the keders 170 through the keder tracks 48 from the other side of the portable structure 10 using ropes 178 attached to the top panel 12, as illustrated in
Desirably, the radius of curvature of the eaves 60 and apexes 50 is great enough to allow the top panels 12 and end panels 14 to slide through the keder tracks 48 of the eaves 60 and apexes 50 with relative ease. Preferably, the radius of curvature of the eaves 60 and apexes 50 is at least approximately 2 feet.
The panel 12 installation is repeated for each of the portable structure 10 individual bays, or spaced distance, between adjacent beam assemblies 40. The adjustable purlins 120 remain in a shortened, or compressed length, configuration until all of the panels 12 are installed to the beam assemblies 40. The panels 12 can be tensioned by extended purlins to remove any slack that exists between the adjacent beam assemblies and establish a taut, and highly tensioned fabric panel that can withstand significant wind generated loads and generate minimal noise due to fabric flapping about in high winds. In some embodiments, for example, short term installation of the portable structures, the adjustable purlins are not extended to tension the fabric.
In the illustrated embodiment of
The fabric panels 12 can be tensioned after all, or a portion of, the panels 12 are installed onto adjacent beam assemblies 40. In some embodiments, particularly where the portable structure is only temporarily assembled for a short amount of time, the fabric panels are installed in a loose configuration, and the purlins 120 are not extended, or elongated, after the purlins 120 are installed on the portable structure 10. As will be appreciated by one of skill in the art, in some embodiments only a portion of the purlins 120 are extended. To tension the fabric to a taut surface, the adjustable purlins can be adjusted from the compressed, or fully compressed, position to an expanded length position as illustrated in
In the illustrated embodiment of
As the threaded portions 134, 136 exit the rotating body 130, the length of the adjustable purlin 120 increases. The increased length of the purlin 120 increases the spaced distance between the beam assemblies and tensions the top panel 12 that is fixedly attached to the adjacent beam assemblies via the keder 170 that is securedly encompassed by the keder tracks 46.
After the center purlin 120 is tensioned to remove the fabric panel 12 slack between the beam assemblies at the apex 50 region, the adjacent purlins are extended to tension the remaining portions of the center (I) fabric panel 12. The next adjacent purlins, moving outward toward the legs 90 from the apex 50 on both sides of the apex 50, are sequentially extended and tensioned in the same bay section of the center panel 12. Thus, the top panel 12 is tensioned from the widthwise center location of the beam assembly outward toward the legs 90. For example, after purlin 120 coupled to adjacent apexes 50 are tensioned, the purlins 120 that are coupled to the short beams 70 are tensioned. After the short beam 70 purlins 120 are tensioned, the purlins 120 that are coupled to the long beams 80 are tensioned. Finally, the purlins 120 that are coupled to the adjacent eaves 60 are tensioned. In some embodiments, the order of sequencing the purlins within each bay can vary, e.g. apex 50 first, eaves 60 second, or the like, or any combination thereof.
With continued reference to
Any lighting, decorations, or other fixtures that are to be hung from the roof portions 42 of the portable structure 10 can be installed next. The lighting and decorations preferably are attached to the brackets 56 at the apexes 50, long beams 80, short beams 70, and eaves 60 of the roof portions 42.
Because the portable structure 10 of the illustrated embodiment is anchored to the ground at the base members 20 during construction thereof, the risk of damage to the portable structure 10 or injury to persons nearby during construction of the portable structure 10 is reduced. The tensioning of the top panels 12 and end panels 14 via the variable length adjustable purlins 120 improves the overall appearance of the portable structure 10 and reduces noise and frame stresses caused by the flapping of the panels 12, 14 in the wind.
The portable structure 10 is easily erected by unskilled workers with minimal specialized equipment. In addition, the tent structure 10 comprises a number of relatively small frame components that can easily be transported from site to site. For a 5,000 square foot portable structure of the illustrated embodiment, the disassembled shipping volume is approximately 480 cubic feet. In contrast, a typical 5,000 square foot fabric-covered structure would have a shipping volume of approximately 1280 cubic feet. The portable structure of the illustrated embodiment is thus well-suited for long-term installations in demanding environmental conditions.
Although the invention has been disclosed in the context of certain preferred embodiments and examples, it will be understood by those skilled in the art that the present invention extends beyond the specifically disclosed embodiments to other alternative embodiments and/or uses of the invention and obvious modifications and equivalents thereof Thus, it is intended that the scope of the present invention herein disclosed should not be limited by the particular disclosed embodiments described above, but should be determined only by a fair reading of the claims that follow.
Claims
1. A method of erecting a portable structure, comprising:
- securing a plurality of base members to a support surface;
- assembling a plurality of beam members, wherein each of said beam members has a length and is configured to couple to a pair of said base members;
- coupling said plurality of beam members to said plurality of base members;
- erecting said plurality of beam members about said pairs of said base members;
- coupling a plurality of transverse members between adjacent beam members, said transverse members establishing a plurality of spaced distances between said adjacent beam members;
- coupling a fabric to a pair of adjacent beam members of said plurality of beam members, said fabric extending from substantially adjacent a first base member to substantially adjacent a second base member; and
- deciding whether to elongate at least one of said plurality of transverse members between said adjacent beam members to increase the length of said at least one of said plurality of transverse members, wherein said increased length would facilitate tautly securing said fabric to said beam members.
2. The method of claim 1, further comprising elongating at least one of said plurality of transverse members between said adjacent beam members to increase the length of said at least one of said plurality of transverse members, wherein said increased length facilitates tautly securing said fabric to said beam members.
3. The method of claim 1, wherein said base members are substantially parallel to one another.
4. The method of claim 1, wherein said erecting said plurality of beam members comprising pivoting an upper portion of said beam assembly about said pair of base clamps.
5. The method of claim 1, wherein said securing said plurality of base members comprising coupling said base members to said support surface by inserting stakes through said base member into said support surface.
6. The method of claim 5, wherein said stakes comprising at least one of concrete anchors or elongate ground stakes.
7. The method of claim 1, wherein said support surface is the ground.
8. The method of claim 1, wherein said support surface is a concrete surface.
9. The method of claim 1, wherein said coupling said plurality of beam members comprising coupling a first end of said beam member to a first base member and a second end of said beam member to a second base member.
10. The method of claim 9, wherein said pair of base members comprising said first base member and said second base member.
11. The method of claim 1, wherein said beam members comprising a plurality of beam member portions, each beam member portion comprising at least one of displaceable protrusions and receiving apertures, to couple said beam member portions to one another.
12. The method of claim 1, wherein said coupling said fabric to said plurality of beam members comprising slidingly inserting said fabric through a plurality of apertures disposed along an outer surface of said beam members.
13. The method of claim 12, wherein said plurality of apertures comprise keder tracks.
14. The method of claim 1, wherein said beam members comprising a plurality of apertures configured to receive the fabric, said apertures disposed about the body of the beam member and extending longitudinally along the length of the beam members.
15. The method of claim 14, further comprising pulling fabric through the apertures along the length of said beam members.
16. The method of claim 1, wherein said plurality of beam members comprising a hollow body.
17. The method of claim 16, wherein said beam members comprising an aluminum body.
18. The method of claim 1, wherein said assembling said plurality of beam members further comprising coupling a plurality of discrete beam member portions to one another, wherein a first beam member portion having a first portion with displaceable protrusions being received by a second beam member, said second beam member having receiving apertures to receive said displaceable protrusions.
19. The method of claim 1, further comprising fixing keders to said fabric panels adjacent an outer periphery of said fabric panel.
20. The method of claim 1, wherein said coupling said beam members to said base members comprising securingly inserting an elongate member through a first aperture in a first portion of said beam assembly and a first aperture of said base member.
21. The method of claim 1, wherein said fabric comprising one of PVC coated canvas or PVC coated polyester.
22. The method of claim 1, wherein said elongating at least one of said plurality of transverse members includes rotating an adjustment portion of said at least one of said plurality of transverse members about a longitudinal axis of said at least one of said plurality of transverse members.
23. A method of erecting a portable structure, comprising:
- securing a plurality of base members to a support surface;
- assembling a plurality of beam members, wherein each of said beam members has a length and is configured to couple to a pair of said base members;
- coupling said plurality of beam members to said plurality of base members;
- erecting said plurality of beam members about said pairs of said base members;
- coupling a plurality of transverse members between adjacent beam members, said transverse members establishing a plurality of spaced distances between said adjacent beam members;
- coupling a fabric to at least a pair of adjacent beam members of said plurality of beam members;
- elongating at least one of said plurality of transverse members between said adjacent beam members to increase the length of said at least one of said plurality of transverse members, wherein said increased length facilitates tautly securing said fabric to said beam members; and
- sequencing the elongating of said plurality of transverse members to begin at a spaced distance that is substantially centered between the plurality of spaced distances established between the plurality of adjacent beam members, wherein each subsequent elongating of said transverse members occurs at a spaced distance between beam members that is adjacent a spaced distance having elongated transverse members.
24. The method of claim 1, wherein said elongating at least one of said plurality of transverse members includes rotating an adjustment portion of said at least one of said plurality of transverse members about a longitudinal axis of said at least one of said plurality of transverse members.
Type: Application
Filed: Jan 12, 2012
Publication Date: Jul 19, 2012
Inventor: Robert Stafford (Weed, CA)
Application Number: 13/349,480
International Classification: E04H 15/34 (20060101); E04H 15/54 (20060101);