FIELD OF THE INVENTION

The present invention relates to physical exercise centers and to arrangements in physical exercise centers and more particularly to transportable physical exercise centers.

BACKGROUND OF THE INVENTION

In the prior art portable training racks are typically packed as components into boxes and the boxes are transported in a van or in a truck. At the training area the separate components of the training rack are then removed from the boxes and the training rack is assembled by connecting the components together with bolted joints. During the disassembly of the training rack the joints between the components are disassembled and the separate components are packed to the boxes for transportation.

One of the problems associated with the prior art is that the assembly of the training rack from a transport mode to a use mode and the disassembly of the training rack from a use mode to a transport mode is time consuming. Additionally, especially the assembly of the training rack from components has to be carried out correctly for safe use. As the training rack consists of a plurality of separate components it has to be taken care that every component is packed back to the boxes for transportation.

BRIEF DESCRIPTION OF THE INVENTION

An object of the present invention is to provide a transportable exercise center and an arrangement in a physical exercise center such that the disadvantages of the prior art are dissolved or at least alleviated.

The objects of the invention are achieved by the transportable exercise center according to an independent claim 1 and by the arrangement in a physical exercise center according to an independent claim 14. The preferred embodiments of the invention are disclosed in the dependent claims.

The invention is based on the idea of providing a transportable physical exercise center. The center comprises a container comprising container walls defining an inner container space, the container walls comprising a bottom wall and a top wall and side walls extending between the bottom wall and the top wall, a training rig provided at the side wall of the container, and the training rig comprising a frame comprising a beam structure comprising a horizontal beam comprising a first end and a second end, and the first end is connected to a vertical beam. The horizontal beam is attached to a support system mounted to the top wall of the container and the horizontal beam is movable horizontally in the length direction of the horizontal beam in the support system between an extended position and a retracted position. In a use position of the physical exercise center the horizontal beam is in the extended position and the first end of the horizontal beam projects from the plane of the side wall such that the vertical beam is positioned at a distance apart from the side wall. In a transport position of the physical exercise center the horizontal beam is in the retracted position such that the vertical beam is positioned close to the side wall.

The assembly of the training rig from a transport mode to a use mode and the disassembly of the training rig from a use mode to a transport mode is a rapid action. The training rig moves smoothly in the support system. The number of separate components in the training rig is reduced as the training rig need not to be disassembled from the container for the transportation. The assembly and the disassembly can be made correctly and in a safe manner as the training rig is fixed to the container and there is no need to connect large separate components manually.

During the transport of the container the exercise equipment can be stored in the inner container space. The positioning of the training rig outside the container, at the side wall, during the transport and the mounting of the support system to the top wall frees space in the inner container space.

In a use position of the physical exercise center the training rig protrudes from the plane of the side wall. Preferably, the horizontal beam is arranged to move horizontally substantially perpendicular to the plane of the side wall.

In an embodiment of the invention the frame may further comprise a further beam structure, a top beam parallel to the side wall, and the top beam is arranged between the vertical beams of the beam structures and attached to the higher ends of the vertical beams of the beam structures forming a beam structure pair.

In another embodiment of the invention the frame may further comprise a further beam structure, a top beam parallel to the side wall, and the top beam is arranged between the vertical beams of the beam structures and attached between the vertical beams of the beam structures forming a beam structure pair.

In yet another embodiment of the invention the frame may comprise two beam structure pairs, i.e. a beam structure pair and a further beam structure pair.

In yet further another embodiment the frame may comprise a further top beam parallel to the side wall, and the top beam is arranged between the vertical beams of the beam structure pair and the further beam structure pair and attached to the higher ends of the vertical beams of the beam structure pair and the further beam structure pair.

In yet another further embodiment of the invention the frame may comprise a further top beam parallel to the side wall, and the top beam is arranged between the vertical beams of the beam structure pair and the further beam structure pair and attached between the vertical beams of the beam structure pair and the further beam structure pair.

In an embodiment of the invention the support system may comprise a supporting U-shaped channel, and the horizontal beam is movable along the U- shaped channel between the sides of the U-shaped channel, the sides providing lateral support. The U-shaped channel extends from the side wall towards the opposing side wall. The U-shaped channel is mounted to the upper surface of the top wall of the container, or the U-shaped channel is mounted to the inner surface of the top wall of the container and the horizontal beam extends through an opening provided to the side wall into the inner container space.

In another embodiment of the invention the support system may be mounted to the inner surface of the top wall of the container, and the horizontal beam extends through an opening provided to the side wall into the inner container space, and the support system comprises a guide roller mounted to the inner surface of the side wall facing the inner container space, and the guide roller is positioned in contact with the horizontal beam below the horizontal beam for supporting the stationary horizontal beam and during the movement of the horizontal beam.

Mounting the support system to the inner surface of the top wall of the container facing the inner container space ensures protection from weather, damage, alteration and theft.

In yet another embodiment of the invention the support system may further comprise two guide rollers mounted to the inner surface of the side wall facing the inner container space, and the guide rollers are positioned in contact on both sides of the horizontal beam providing lateral support to the stationary horizontal beam and during the movement of the horizontal beam.

In yet further another embodiment of the invention the support system may comprise a guide roller mounted from its axial ends with metal plates to the inner surface of the top wall of the container, and the horizontal beam is located between the metal plates, which provide horizontal support, and in contact with the guide roller providing vertical support to the stationary horizontal beam and during the movement of the horizontal beam.

In another yet further embodiment of the invention the support system of at least one of the outermost beam structures in the training rig frame may comprise the support system mounted to the inner surface of the top wall of the container, and the horizontal beam extends through an opening provided to the side wall into the inner container space, and the support system comprises a guide roller mounted to the inner surface of the side wall facing the inner container space, and the guide roller is positioned in contact with the horizontal beam below the horizontal beam for supporting the stationary horizontal beam and during the movement of the horizontal beam, and further comprises two guide rollers mounted to the inner surface of the side wall facing the inner container space, and the guide rollers are positioned in contact on both sides of the horizontal beam providing lateral support to the stationary horizontal beam and during the movement of the horizontal beam. The support system provides horizontal rigidity to the training rig especially during the movement of the training rig between the use position and the transport position.

In an embodiment of the invention the horizontal beam may comprise a U-shaped beam, and the second end of the horizontal beam comprises a roller or a sliding member, and the roller or the sliding member extends from between the side walls of the U-shaped beam outwards in the height direction of the U-shaped beam. The roller or the sliding member is in contact with the top wall surface or the support system reducing friction when the horizontal beam is moved in the support system.

In another embodiment of the invention in the retracted position the second end of the horizontal beam may extend between the side walls 45%...100% of the width of the container.

In a further embodiment of the invention the frame may further comprise height adjustable legs provided at the lower ends of the vertical beams. The height adjustable legs enable the frame of the training rig to remain in a stable position on uneven ground.

In a further another embodiment of the invention the center may comprise at both opposing side wall sides of the container is provided the training rig. Further, in the embodiment at least one horizontal beam from each of the training rigs may be arranged to the same supporting U-shaped channel, or at least one horizontal beam from each of the training rigs may be arranged to a supporting U-shaped channel which are facing one another.

The present invention further relates to an arrangement in a physical exercise center. The arrangement comprises a roofing which is supported on walls or ground-supported, a training rig provided at an edge area of the roofing, the training rig comprising a frame comprising a horizontal beam comprising a first end and a second end, and the first end is connected to a vertical beam. The horizontal beam is attached to a support system mounted to the roofing, the horizontal beam is movable horizontally in the length direction of the horizontal beam in the support system between an extended position and a retracted position. In an open-air position of the physical exercise center the horizontal beam is in the extended position and the first end of the horizontal beam projects from a vertical plane which is perpendicular to the horizontal beam and parallel to the edge of the roofing and at the edge of the roofing such that the vertical beam is positioned at a distance apart from the vertical plane. In a covered position of the physical exercise center the horizontal beam is in the retracted position such that the vertical beam is positioned close to the vertical plane.

The physical exercise center can be used both in the open-air position and in a covered position. The assembly of the training rig from a covered position to an open-air position and the disassembly of the training rig from an open-air position to a covered position is a rapid action. The training rig moves smoothly in the support system. The number of separate components in the training rig is reduced as the training rig need not to be disassembled from the roofing. The assembly and the disassembly can be made correctly and in a safe manner as the training rig is fixed to the roofing and there is no need to connect large separate components manually.

In an embodiment of the invention in the arrangement the roofing comprises a side wall, the training rig is provided at the side wall side of the roofing, the support system is mounted to the inner surface of the roofing and the horizontal beam extends through an opening provided to the side wall. In an open- air position of the physical exercise center the horizontal beam is in the extended position and the first end of the horizontal beam projects from the plane of the side wall such that the vertical beam is positioned at a distance apart from the side wall.

In one embodiment vertical supports of the container are arranged to protrude outwards from the outer surface of the lateral side wall such that the vertical beam of the training rig in the transport position is positioned between the vertical supports of the container. Preferably during the transportation an outer surface of the vertical support of the container is the outermost surface.

An advantage of the invention is that the physical exercise center can be transported to a desired location and it can be assembled and disassembled rapidly, smoothly, correctly and in a safe manner. The training rig can be operated manually, i.e. pushed and pulled by man power, or it may be equipped with electrical operating devices.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is described in detail by means of specific embodiments with reference to the enclosed drawings, in which

Figure la shows a transportable physical exercise center;

Figure lb shows a transportable physical exercise center of Figure la;

Figure 2 shows a transportable physical exercise center;

Figure 3 shows a transportable physical exercise center;

Figure 4 shows a support system;

Figure 5 shows a support system;

Figure 6 shows a support system;

Figure 7 shows a support system;

Figure 8a shows an arrangement in a physical exercise center;

Figure 8b shows an arrangement in a physical exercise center of Figure

8a.

Figure 9a shows a structure of a side wall;

Figure 9b shows a structure of a side wall.

DETAILED DESCRIPTION OF THE INVENTION

Figures la-b show a transportable physical exercise center 1. The container 2 is formed by container walls 3 defining an inner container space 4. In the embodiment of the Figures la-b, 2 and 3 the container 2 comprises a first end wall 5, a second end wall 6, a bottom wall 7, a top wall 8 and two opposite lateral side walls 9. The first end wall 5 preferably comprises hinged doors. The container 2 shown is rectangular, but the container may also be a cube.

In the figures la-b the training rig 10 is provided at the lateral side wall 9 side of the container 2.

The training rig 10 comprises a frame 11 comprising a beam structure

12 comprising a horizontal beam 13 comprising a first end 14a and a second end 14b, and the first end 14a is connected to a vertical beam 15. The connection between the horizontal beam 13 and the vertical beam 15 is arranged in the vicinity of the end of the horizontal beam 13.

The vertical beam 15 functions as a support and/or attachment surface for exercise equipment. The vertical beam may comprise bolt holes or hooks, or sleeves which can be fastened to a desired position, for instance.

The horizontal beam 13 is attached to a support system 16 mounted to the top wall of the container. Examples of support systems 16 are shown in Figures 4-7. The horizontal beam 13 is movable horizontally in the length direction of the horizontal beam L in the support system 16 between an extended position, Figure la, and a retracted position, Figure lb.

The use position of the physical exercise center 1 is shown in Figure la. In a use position of the physical exercise center 1 the training rig 10 protrudes from the plane of the side wall 9. In a use position the horizontal beam 13 is in the extended position. The first end of the horizontal beaml4a projects from the plane of the lateral side wall 9 such that the vertical beam 15 is positioned at a distance apart from the lateral side wall 9. The distance is preferably minimum 50 cm so that it allows the use of the vertical beam 15 as a support and/or attachment surface for exercise equipment. The maximum distance is defined by the length of the horizontal beam 13 as in the extended position at least the second end 14b part of the horizontal beam has to rest in the support system 16. Additionally, the length of the horizontal beam is preferably equal or less than the width/length of the top wall 8 of the container 2. If the horizontal beam 13 is arranged in the width direction of the top wall 8, then the width of the container top wall 8 is relevant. If the horizontal beam 13 is arranged in the length direction of the top wall 8, then the length of the container top wall 8 is relevant.

In a use position of the physical exercise center 1 the horizontal beam

13 is in the extended position and the first end 14a of the horizontal beam 13 projects from the plane of the side wall 9 such that the vertical beam 15,15a-d is positioned at a second distance outwards from an outer surface of the side wall 9 , and in a transport position of the physical exercise center 1 the horizontal beam 13 is in the retracted position such that the vertical beam 15,15a-d is positioned at a first distance outwards from the outer surface of the side wall 9, such that the first distance is shorter than the second distance,

In the use position of Figure la a training station is formed between the lateral side wall 9 of the container 2 and the vertical beam 15, for instance. The lateral side wall 9 may comprise support members for exercise equipment. The training station can be used for weight lifting or making pull-ups by installing a weight lifting bar or a pull-up bar, for instance.

The transport position of the physical exercise center 1 is shown in Figure lb. In a transport position of the physical exercise center 1 the horizontal beam 13 is in the retracted position such that the vertical beam 15 is positioned close to the lateral side wall 9. When the vertical beam 15 is positioned close to the lateral side wall 9 it means that it is adjacent to the lateral side wall 9. Preferably, the free distance between the vertical beam 15 and the lateral side wall 9 is less than 25 cm in the transport position.

Figure 9a shows an embodiment where vertical supports 29 of the container 2 are arranged to protrude inwards from an inner surface of the side wall 9 and the vertical beam 15 in the transport position is positioned outside the container 2.

Figure 9b shows another embodiment where the lateral side wall 9 comprises an indented structure. The vertical supports 29 of the container 2 are arranged to protrude outwards from an outer surface of the side wall 9 such that the vertical beam 15 in the transport position is positioned between the vertical supports 29 of the container 2.

In one embodiment a distance between the outer surface of the side wall 9 and an outer surface of the vertical support 29 is X and a distance between the outer surface of the side wall 9 and an outer surface of the vertical beam 15 is Y, such that X is a longer distance than Y.

It is important that the training rig 10 remains in place in a use position and in the transport position. The horizontal beam 13 and/or the support system 16 and/or the container 2 can comprise a locking system which prevents the movement of the horizontal beam 13 while in extended position and/or in retracted position. In the extended position the weight of the training rig 10 is partially on the vertical beams 15 which also prevents the movement of the horizontal beam 13.

The vertical beam 15 or the container 2 can comprise a releasable fixing device allowing the vertical beam 15 and the container 2 to be fixed with each other in the transport position. The fixing device is preferably positioned to fix the lower end 17 of the vertical beam 15. As the lower end 17 of the vertical beam 15 is fixed also the movement of the horizontal beam 13 is limited.

The transportable physical exercise center 1 shown in Figure 2 comprises a training rig 10 provided at a lateral side wall 9 of a container 2. In the embodiment the training stations are arranged parallel to the side wall 9 of the container 2. The training stations may be squad stations or pull-up stations, for instance. The training stations are formed with pairs of beam structures 12.

The beam structure pair comprises a beam structure 12 and a further beam structure 12a and a top beam 18 parallel to the side wall 9. The top beam 18 is arranged between the vertical beams 15 of the beam structures and attached between the vertical beams 15 of the beam structures 12 forming a beam structure pair. The top beam 18 is preferably attached to the higher ends 19 of the vertical beams 12 for providing free height below. The top beam 18 is a square or rectangular hollow section, for instance.

The frame 11 of the training rig 10 comprises two pairs of beam structures 12. In the embodiment, the frame 11 further comprises a further top beam 18b parallel to the side wall 9. The further top beam 18b is arranged between the vertical beams 15a, 15b of the beam structure pair comprising two beam structures 12,12a and the further beam structure pair comprising two beam structures 12b-c and attached between the vertical beams 15a, 15b of the beam structure pair and the further beam structure pair. The further top beam 18b is preferably attached to the higher ends 19 of the vertical beams 15 of the beam structure pairs for providing free height below.

The embodiment in Figure 2 comprises two training stations arranged at intervals at a side wall 9 of a container 2.

As the training rig 10 is pulled out to the use position or pushed to the transport position the frame 11 moves as a single unit. It is also possible to leave the beam structure pairs unconnected with each other and in that case the frame 11 moves as separate units which have to be pulled out or pushed separately.

Figure 3 shows an embodiment of the transportable physical center 1 where the frame 11 of the training rig 10 comprises two beam structure pairs comprising beam structures 12,12a-c. The frame 11 additionally comprises a beam structure for extension piece 12d. The beam structure for extension piece 12d comprises a horizontal beam 13 comprising a first end 14a and a second end 14b. The first end 14a is connected to a vertical beam 15d. The horizontal beam 13 is attached to a support system 16 mounted to the top wall 8 of the container 2. The beam structure for the extension piece 12d is attached to one of the adjacent beam structure pairs with a hollow top beam 18c arranged between the vertical beam 15d of the beam structure for extension piece 12d and the vertical beam 15c of the beam structure pair. The frame 11 comprises an extension beam structure 20 comprising an extension vertical beam 21 and an extension horizontal beam 22. The extension beam structure 20 is supported by the beam structure for extension piece 12d and the hollow top beam 18c. The extension horizontal beam 22 is movable horizontally in the length direction of the horizontal beam 22 through beam structure for extension 12d inside the hollow top beam 18c between an extended position and a retracted position.

The beam structure for extension piece 12d is provided at the lateral side wall 9 in a position closer to the second end wall 6 than the first end wall 5, and the extension beam structure 20 is closer to the second end wall 6 than the beam structure for extension piece 12d. In a use position the extension horizontal beam 22 is in an extended position such that the extension vertical beam 21 is positioned at a distance apart from the vertical beam 15d of the beam structure for extension piece 12d. In a transport position the extension horizontal beam 22 is in retracted position such that the extension vertical beam 21 is close to the lateral side wall 9. As the extension beam structure 20 is supported by the beam structure for extension piece 12d and the hollow top beam 18c running parallel to the side wall 9 the extension vertical beam 21 can be positioned outside the length of the side wall 9 when in use. The beam structure for extension piece 12d and the extension beam structure 20 form a further training station. The embodiment in Figure 3 comprises three training stations arranged at intervals at a side wall 9 of a container 2.

A further additional training station can be formed with a climbing track attached to the top wall 8 of the container 2 (not shown). The climbing track can be a foldable climbing track and it can be connected pivotably to the top wall 8. In the transport position the climbing track forms a substantially flat area. However, if the container 2 needs to be stacked during the transportation the top of the container 2 has to be free.

The frame 11 can comprise height adjustable legs provided at the lower ends 17 of the vertical beams 15a-d. An embodiment of the support system 16 is shown as a side view in Figure 4. The support system 16 comprises a supporting U-shaped channel. The U- shaped channel may comprise a U-shaped beam or a tube. The horizontal beam 13 is movable along the U-shaped channel between the sides of the U-shaped channel. The sides of the U-shaped channel provide lateral support. The U-shaped channel extends from the side wall 9 towards the opposing side wall. The U-shaped channel is mounted to the upper surface of the top wall 8 of the container 2, or the U-shaped channel is mounted to the inner surface of the top wall 8 of the container 2 and the horizontal beam 13 extends through an opening 23 provided to the side wall 9 into the inner container space 4.

In Figure 4 the support system 16 is mounted to the inner surface of the top wall 8 of the container 2, and the horizontal beam 3 extends through an opening 23 provided to the side wall 9 into the inner container space. 4 The support system 16 comprises a guide roller 24a mounted to the inner surface of the side wall 8 facing the inner container space 4, and the guide roller 24a is positioned in contact with the horizontal beam 13 below the horizontal beam 13 for supporting the stationary horizontal beam 13 and during the movement of the horizontal beam 13.

An embodiment of the support system is shown in Figure 5. The support system comprising guide rollers 24a-b is mounted to the inner surface of the side wall 9 facing the inner container space 4. The horizontal beam 13 extends through an opening 23 provided to the side wall 9 into the inner container space 4. Two guide rollers 24b are mounted to the side wall 9 and the guide rollers 24b are positioned in contact on both sides of the horizontal beam 13 providing lateral support to the stationary horizontal beam 13 and during the movement of the horizontal beam 13. An additional guide roller 24a is positioned in contact with the horizontal beam 13 below the horizontal beam 13 for supporting the stationary horizontal beam 13 and during the movement of the horizontal beam 13. Preferably, one of the outermost beam structures 12,12,c,12d or both of the outermost beam structures 12,12,c,12d in the training rig’s 10 frame 11 comprises this guider roller arrangement. The guider roller arrangement provides horizontal rigidity to the training rig 10 especially during the movement of the training rig 10 between the use position and the transport position.

Figure 6 shows a support system comprising a guide roller 24c mounted from its axial ends with metal plates 25 to the inner surface of the top wall 8 of the container 2. The horizontal beam 13 is located between the metal plates 25, which provide horizontal support, and in contact with the guide roller 24c providing vertical support to the stationary horizontal beam 13 and during the movement of the horizontal beam 13. For instance, the support system of Figure 6 can be used in addition with the embodiment of the support system shown in Figure 4, in particular in a case wherein the retracted position the second end 14b of the horizontal beam 13 extends between the side walls 9 80%...100% of the width of the container 2. The metal plates 25 can comprise strips, for instance.

Figure 7 shows a front view of a horizontal beam 13 comprising a U- shaped beam, and the second end 14b of the horizontal beam comprises a roller 26. The roller 26 extends from between the side walls of the U-shaped beam outwards in the height direction of the U-shaped beam. The roller 26 is in contact with the top wall 8 surface or the support system 16 reducing friction when the horizontal beam 13 is moved in the support system 16. For instance, if the support system 16 comprises a supporting U-shaped channel the roller 26 is rolling on the bottom of the channel. The roller 26 may be replaced by a sliding member. The sliding member comprises sliding material, or it may comprise a base material and a sliding film that covers a surface of the base material and constitutes a sliding surface.

In the embodiments the opening 23 in the side wall 9 of the container 2 is preferably sealed protecting the inner container space 4 from weather.

Figures 8a-b show an arrangement in a physical exercise center. The arrangement is an outdoor arrangement, for instance. 1 The arrangement comprises a roofing 27 which is supported on a back wall 28. The roofing 27 can also be ground-supported. A training rig 10 is provided at an edge area of the roofing 27. The training rig 10 comprises a frame 11 comprising a horizontal beam 13 comprising a first end 14a and a second end 14b, and the first end 14a is connected to a vertical beam 15. The horizontal beam 13 is attached to a support system 16 mounted to the roofing 27. The horizontal beam 13 is movable horizontally in the length direction of the horizontal beam L in the support system 16 between an extended position and a retracted position.

Examples of support systems 16 are shown in Figures 4,6 and 7. The embodiment of Figure 4 is suitable for the roofing 27 without the guide roller 24a positioned below the horizontal beam 13 by adding the support system 16 shown in Figure 6 which provides vertical support. The embodiment of Figure 7 is suitable for the roofing 27 by adding the support system 16 of Figure 6.

An open-air position of the training rig 10 is shown in Figure 8a. In an open-air position of the physical exercise center 1 the horizontal beam 13 is in the extended position and the first end of the horizontal beam 14a projects from a vertical plane which is perpendicular to the horizontal beam 13 and parallel to the edge of the roofing 27 and at the edge of the roofing 27 such that the vertical beam 13 is positioned at a distance apart from the vertical plane.

A covered position of the training rig 10 is shown in Figure 8b. In a covered position of the physical exercise center 1 the horizontal beam 13 is in the retracted position such that the vertical beam 13 is positioned close to the vertical plane.

Examples of containers are a truck container, a transport container, a sea or shipping container.

The training rig arranged to a side wall is supported by the side wall and the top wall of the container. If the exercise center comprises another training rig arranged to an opposing side wall the another training rig is supported by the opposing side wall and the top wall of the container. The functional requirement for container walls providing support to a training rig is adequate stiffness. The necessary bending stiffness can be achieved with a thick steel sheet forming a wall, with external reinforcements provided to the wall or with a waved structure on the wall formed of alternate ridges and valleys, for instance. The waved structure is stiff in relation to its weight and cost effective.

The transportable physical exercise center is suitable for flexibility exercises such as stretching, aerobic exercises and anaerobic exercises such as weight training.

The invention has been described above with reference to the examples shown in the figures. However, the invention is in no way restricted to the above examples but may vary within the scope of the claims.

Part list: 1 a physical exercise center; 2 a container; 3 container walls; 4 an inner container space; 5 a first end wall; 6 second end wall; 7 a bottom wall; 8 a top wall; 9 a lateral side wall; 10 a training rig; 11 a frame; 12, 12a-d a beam structure; 13 a horizontal beam; 14a a first end, 14b a second end; 15, 15a-d a vertical beam; 16 a support system; 17 a lower end; 18, 18b-c a top beam; 19 a higher end; 20 an extension beam structure; 21 an extension vertical beam; 22 an extension horizontal beam; 23 an opening; 24a-c a guide roller; 25 a metal plate; 26 a roller; 27 a roofing; 28 a back wall; 29 a vertical support of the container; L length direction; X a distance between an outer surface of the side wall and an outer surface of a vertical support of a container; Y a distance between the outer surface of a side wall and an outer surface of the vertical beam.