JP6873419B2 - Mobile bleachers and transport equipment - Google Patents

Description

The present invention relates to a mobile bleachers that are transported and installed at required positions such as an outdoor stadium, a gymnasium, and a multipurpose hall, and a transport device that transports heavy objects such as bleachers.

As the movable bleachers, those in which transport means such as wheels and tracks are attached to the bleachers are known (see Patent Documents 1 to 4).

The mobile bleachers described in Patent Document 1 have a structure in which bleachers are provided on a trolley, wheels are driven by a motor, and the bleachers are moved in the front-rear direction along a guide laid on the ground. The mobile bleachers described in Patent Document 2 are bleachers in which staircase bleachers are superposed and stored, and a pair of rotating wheels and these rotating wheels are wrapped around a support leg structure of the bleachers. The structure is such that the bleachers can be taken in and out by attaching an endless track mechanism with a patent belt. The mobile bleachers described in Patent Document 3 also have a structure in which the staircase bleachers are overlapped and stored, and rollers are attached to the support frame for taking in and out the bleachers. The mobile bleachers described in Patent Document 4 have a structure in which a pair of sprockets are attached to a lower frame of the bleachers and an endless chain is wound around the bleachers to move the bleachers back and forth.

Japanese Unexamined Patent Publication No. 11-1205019 Japanese Unexamined Patent Publication No. 2001-262848 Japanese Unexamined Patent Publication No. 2000-282698 Japanese Unexamined Patent Publication No. 62-32147

In all of the mobile bleachers described in Patent Documents 1 to 4, the bleachers and the means of transportation are integrated, and the bleachers are supported by the means of transportation even after the bleachers are installed at predetermined positions. Therefore, the load of the bleachers is concentrated on the means of transportation, for example, the parts that are engaged with the wheels and the rotating wheels of the tracks, and the load of the bleachers is concentrated on these parts for a long time. There was a problem that they were easily damaged. In addition, since the means of transportation always support the bleachers, the means of transportation are easily damaged and high strength is required. Further, the range of movement of the bleachers in which the wheels are engaged with the guides laid on the installation surface is limited to the installation range of the guides.

In view of the above-mentioned technical background, the present invention provides a mobile bleachers having a structure in which the bleachers can be freely moved and the load of the bleachers installed at a predetermined position is not concentrated, and further, heavy objects are transported. An object of the present invention is to provide a transport device used in the above.

That is, the present invention has the configurations described in the following [1] to [7].

[1] It is composed of a bleachers with a space for accommodating people on the base in contact with the installation surface, and a transport device connected to the bleachers to transport the bleachers.
An engaging portion is provided on the base of the bleachers.
The transport device includes a lever rod and a wheel attached to an intermediate portion of the lever rod in the length direction to form a fulcrum portion, and the lever rod is attached to an action portion at the lower end and an engaging portion of the viewing seat. A mobile viewing seat characterized in that it has a detachably engaged connecting portion and a grip portion is formed at a power point portion at the upper end.

[2] The first item in the preceding item, wherein the engaging portion of the bleachers is a protrusion protruding from the base, and the connecting portion of the transport device engaged with the protrusion is a tubular collar that is externally fitted to the protrusion. Mobile bleachers.

[3] The mobile bleachers according to item 2 above, wherein a hole communicating with the protrusion and the collar is formed, and the connecting posture of the bleachers and the transport device is maintained by inserting a locking pin into the hole.

[4] The mobile bleachers according to item 3 above, wherein a plate for supporting the inclined posture of the lever rod is attached to a fulcrum portion of the lever rod, and wheels are attached to the plate.

[5] The mobile bleacher according to item 4 above, wherein the end of the plate is inclined downward to form a pedal.

[6] The item according to any one of the preceding items 1 to 5, wherein the base of the bleachers is a quadrangle, engaging portions are provided at the four corners of the base, and a transport device is connected to each engaging portion. Mobile bleachers.

[7] A transport device for connecting and transporting a heavy object provided with an engaging portion.
A wheel having a working portion at the lower end portion that is detachably engaged with the engaging portion of the heavy object, and a lever rod having the upper end portion as a grip portion attached to a fulcrum portion at an intermediate portion in the length direction thereof. A transport device characterized by being supported by a wheel.

According to the mobile bleachers described in [1] above, the bleachers are connected to the engaging part of the bleachers by a connecting part that acts as a lever rod of the transport device, and the bleachers are connected with a small force by using the principle of leverage. Can be lifted. The lifted bleachers are transported by running wheels to a desired installation location, and the transport device is removed so that only the bleachers are installed at that location. Since the load of the installed bleachers is distributed to the base in contact with the installation surface, damage to the installation surface can be minimized.

The transport device is used only when transporting the bleachers. Since the transport device has a short usage time, it is less damaged or deteriorated. Among them, the wheels are the parts where the load of the bleachers is concentrated and easily damaged, but since the load is only received for a short time during transportation, the wheels are less damaged or deteriorated. Further, since the removed transport device can be used for transporting different bleachers, a large-scale bleachers can be constructed with a small number of bleachers by sequentially transporting and installing a plurality of bleachers.

The mobile bleachers according to the above [2] are easy to connect because the means for connecting the bleachers and the transport device is a protrusion and a tubular collar that is externally fitted to the protrusion.

In the mobile bleachers described in [3] above, the connecting posture of the bleachers and the transport device can be stably maintained by inserting the locking pins into the holes communicating with the protrusions and the collar.

According to the mobile bleachers described in [4] above, the plate can support the lever rod in an inclined posture at an arbitrary angle to improve the operability of the transport device.

According to the mobile bleachers described in [5] above, the grip portion can be operated by putting a foot on the pedal, and the operability of the transport device can be improved.

In the mobile bleachers described in the above [6], the lifting posture of the bleachers is stabilized by connecting the transport devices to the four corners of the base of the quadrangular bleachers, so that the bleachers can be safely transported. According to the transport device described in the above, the working portion of the lever rod can be connected to a heavy object, and the heavy object can be lifted with a small force by using this principle, and the wheels can be run and transported.

It is a perspective view of the mobile bleachers of this invention. It is an exploded perspective view of the bleachers. It is a top view which shows the position of the protrusion of the bleachers. It is an enlarged view which shows the periphery of the protrusion of a side frame. It is an enlarged view which shows the periphery of the protrusion of a side frame. It is a perspective view of the transport device. It is an enlarged view of the main part of FIG. 6B-6B is a cross-sectional view taken along the line 6B-6B in FIG. 6A. It is a schematic explanatory drawing which shows the connection procedure of a bleacher seat and a transport device. It is a layout drawing of a bleacher seat and a transport device. It is a perspective view which shows the other connecting part in a transport device. It is a perspective view which shows the other connecting part in the transport device. It is a side view which shows the other aspect of the bleachers.

1 to 8 show an embodiment of the mobile bleachers of the present invention. The mobile bleachers 1 in the illustrated example are composed of bleachers 10 in which four 5-seat benches are provided in a hinamatsuri shape, and two types of two bleachers, for a total of four transport devices 100 and 101. The bleachers 10 are transported and installed at required positions outdoors such as an exercise ground or indoors such as a hall.

In the following description, the front-back and left-right directions of the bleachers 10 are the front-back and left-right directions of the person seated in the bleachers 10, and the front-back and left-right directions of the bleachers 100 and 101 are the directions of the operators of the bleachers 100 and 101. The direction is front, back, left and right.
[Bleachers]
As shown in FIGS. 1 and 2, the bleachers 10 have a seat plate 40, a tread plate 50, a side fence 60, and a back fence 70 attached to a frame made of various columns and beam materials such as beams. ..

The structure of the skeleton of the bleachers 10 is as follows.

On the left side frame 11a and the right side frame 11b in contact with the installation surface, columns 12a, 12b, 12c, and 12d whose heights increase in order from the front to the rear are erected, and the left and right columns 12a having the same height are erected. , 12b, 12c, 12d are connected by front beams 13a, 13b, 13c, 13d arranged at the same height as these columns 12a, 12b, 12c, 12d. Further, the front and rear columns 12a and 12b are connected by side beams 14a arranged at the same height as the lower columns 12a, and the higher left and right columns 12b are rear beams arranged at the same height as the side beams 14a. It is connected by 15a. That is, the upper surfaces of the support column 12a, the front beam 13a, the side beam 14a, and the rear beam 15a have the same height. Further, the front beam 13a and the rear beam 15a are connected by two connecting members 16 arranged at positions lower than the upper surface thereof. Similarly, the support columns 12b and the support columns 12c are connected by the front beam 13b, the side beam 14b, and the rear surface beam 15b, and the front surface beam 13b and the rear surface beam 15b are connected by the connecting member 16. Similarly, the column 12c and the column 12d are connected by the front beam 13c, the side beam 14c, and the rear beam 15c, and the front beam 13c and the rear beam 15c are connected by the connecting member 16.

Four circular holes 17 for attaching the seat plate are formed on the upper surfaces of the front beams 13a, 13b, 13c, and 13d. Two circular holes 18 for attaching side fences are formed on the upper surfaces of the side beams 14a, 14b, and 14c. Further, the fence receiving member 19 is provided so as to project rearward from the left and right columns 12d at the rearmost portion, and two shelf receiving members 20 are provided so as to project rearward at the central portion of the front beam 13d at the rearmost portion. ing. The shelf receiving portions 19 and 20 are provided with circular holes that open on the upper surface.

As shown in FIGS. 2 to 4B, cylindrical protrusions 30 and 31 projecting horizontally toward the right side frame 11b are formed on the front and rear portions of the inner surface of the left side frame 11a. .. Similarly, cylindrical protrusions 31 and 30 projecting in the horizontal direction on the left side frame 11a are formed on the front and rear portions of the inner surface of the right side frame 11b. The protrusions 30 and 31 are provided with holes 32 penetrating in the vertical direction.

The bleachers 10 are in contact with the installation surface on the left and right side frames 11a and 11b, and these are connected by various beam materials to form a quadrangular base in a plan view. The protrusions 30 and 31 connecting the transport devices 100 and 101 are provided at the four corners of the quadrangular base. The protrusions 30 and 31 correspond to the engaging portions provided on the base of the bleachers in the present invention.

The 40 and the tread 50 are attached to the above-mentioned framework, and if necessary, the side fence 60 and the back fence 70 are attached. Note that FIG. 2 shows only one of the four seat plates 40 and only one of the three tread plates 50.

The seat plate 40 is made of a channel material having flanges with lips at both ends in the front-rear direction, and has a cylindrical rod shape at a position corresponding to four circular holes 17 of front beams 13a, 13b, 13c, and 13d on the lower surface. The insertion portion 41 of the above is projected. The seat plate 40 is detachably attached by inserting the insertion portion 41 into the circular holes 17 of the front beams 13a, 13b, 13c, and 13d. By attaching the four seat plates 40 to the front beams having four different heights at 13a, 13b, 13c, and 13d, a four-stage bench is formed.

The seat plate 40 is formed to have substantially the same dimensions as the front beams 13a, 13b, 13c, and 13d in the left-right direction to form one long bench at each stage, but the two circular holes 17 on the right side are formed. A short seat plate can be attached to each of the two circular holes 17 on the left side and the left side to provide a passage in the center.

The tread plate 50 corresponds to the plane dimension of the space surrounded by the front beam 13a, 13b, 13c, the side beams 14a, 14b, 14c and the rear beam 15a, 15b, 15c, and the tread plate 50 dropped into the space. The floor surface is formed by receiving and supporting the binder 16. Further, the thickness of the tread plate 50 is equal to the distance from the upper surface of the front beam 13a, 13b, 13c, the side beams 14a, 14b, 14c and the rear beam 15a, 15b, 15c to the upper surface of the connecting member 16, and is equal to the upper surface of the tread plate 50. The upper surfaces of the beams 13a, 13b, 13c, 14a, 14b, 14c, 15a, 15b, and 15c are flush with each other.

The side fence 60 has a rod-shaped insertion portion 61 at the lower end corresponding to two circular holes 18 of the side beams 14a, 14b, and 14c. The side fence 60 is attached by inserting the insertion portion 61 of the side fence 60 into the circular holes 18 of the side beams 14a, 14b, 14c. FIGS. 1 and 2 show a state in which the side fence 60 is attached only to the right side beams 14a, 14b, and 14c.

A plurality of the bleachers 10 can be installed side by side. At this time, the adjacent bleachers 10 can be continuous on the floor without attaching the side fences 60, or can be separated by individual bleachers 10 by attaching the side fences 60.

The back fence 70 has a rod-shaped insertion portion 71 corresponding to the holes of the shelf receiving members 19 and 20 at the lower end. The side fence 70 is attached by inserting the insertion portion 71 of the back fence 70 into the holes of the shelf support members 19 and 20. FIG. 1 shows a state in which two back fences 70 are attached.

Further, the protrusions 30 and 31 (engagement portions) can be detachably attached to the left and right side frames 11a and 11b (base) by screwing or the like.

The bleachers in the present invention refer not only to seats provided with seats such as seat plates and chairs, but also to seats provided with a space for accommodating people on the base. For example, flatbeds and stairs also fall under the bleachers of the present invention. You are also free to add various accessories to the bleachers. FIG. 10 shows an example in which a table 43 is attached to the front beams 13a and 13c instead of the seat plate 40, and the roof 45 is attached using the fence receiving member 19. The roof 45 is rotatably attached to the tip of the support column 46. The roof 45 is housed along the columns 46 when not in use, and can be supported by the arm 47 when in use, facing either the seat side or the opposite side of the seat. The movable roof 45 can be used as a roof for viewers (chain line), or can be used as a roof (solid line) for supervisor seats or the like by installing the back of the bleachers toward the ground. Further, as the material of the roof 45, a foldable sheet such as tarpaulin or a lightweight material such as a corrugated sheet is preferably used.
[Transport device]
Two types of transport devices 100 and 101 corresponding to the protruding directions of the protrusions 30 and 31 of the bleachers 10 are used for transporting the bleachers 10.

FIG. 5 shows a transport device 100 connected to the protrusion 30.

The transport device 100 includes a lever 110 that lifts the bleachers 10 and wheels 130 that are attached to an intermediate portion of the lever 110 in the length direction via a plate 120. Since the lower end of the lever bar 110 is the action portion and the upper end is the force point portion, and the operator operates in the direction of standing on the force point portion side and looking at the action portion, the front-rear direction of the transfer device 100 is 110 of the lever rod. The direction with the lower end of is the front, and the direction with the upper end is the back. Further, the left and right directions of the operator are the left and right of the transport device 100.

The lever bar 110 obliquely penetrates the plate 120 on one end side of the plate 120 arranged substantially horizontally, and is supported in an inclined posture by wheels 130 attached to the plate 120. The wheel 130 is a fulcrum portion of the lever rod 110. A cylindrical collar 111 that opens in the horizontal direction orthogonal to the lever bar 110 is attached to the lower end of the lever rod 110. The collar 111 projects greatly to the left from the lever bar 110, and is formed as a connecting portion 112 that is engaged with the protrusion 30 of the bleachers 10 by external fitting. The connecting portion 112 is provided with a hole 113 communicating with the hole 31 of the protrusion 30. On the other hand, the upper end portion of the lever rod 110 is bent substantially vertically to form a grip portion 114. The wheel 130 is a caster that turns in a horizontal plane and the traveling direction is not restricted, but it is also possible to stop the turning and regulate the traveling direction. All of the wheels 130 may be casters, but in order to stably transport the wheels 130, it is preferable to arrange the casters in the front in the transport direction and the fixed wheels on the rear side. The other end side (wheel side) of the plate 120 is inclined downward to form a pedal 121, and a U-shaped foothold 122 is attached to the lower end portion of the pedal 121. Further, a triangular reinforcing plate 123 is attached to the corner where the lever bar 110 and the plate 120 intersect to stabilize the inclined posture of the lever bar 110. The grip portion 114 is a power point portion of the lever rod 110, and the wheel 130 is a fulcrum portion of the lever rod 110.

Further, the transport device 100 is inserted into the hole 113 of the connecting portion 112 and the holes 32 of the protrusions 30 and 31 of the bleachers 10, and includes a locking pin 140 for holding the device in a lifted state. The locking pin 140 is connected to the end of the plate 120 by a chain 141.

The transport device 101 connected to the protrusion 31 has the same structure as the transport device 100 except that the right side of the collar 111 is a connecting portion 112.

As shown in FIG. 8, two transport devices 100 and 101 are arranged on the front side and the rear side of the bleachers 10, and an operator stands behind the transport devices 100 and 101, respectively. That is, the transport device 100 having the connecting portion 112 on the left side is connected to the protrusion 30 protruding to the right side when viewed from the operator, and the transport device 31 having the connecting portion 112 on the right side is connected to the protrusion 31 protruding to the left side when viewed from the operator. The device 101 is connected. 6A and 6B show the main parts of the transport device 101 connected to the protrusion 31 behind the right side frame 11b.

The transport devices 100 and 101 in the illustrated example use the left and right depending on the protruding direction of the protrusions 30 and 31, but if the collars are projected on the left and right sides of the lever rod to form connecting portions on both the left and right sides, the left and right sides can be used together. It becomes a transport device for.
[Transportation and installation of bleachers]
The connection between the bleachers 10 and the transport devices 100 and 101, and the transport and installation of the bleachers 10 will be described with reference to FIGS. 6A-8. Note that FIG. 7 shows an example of connecting the protrusion 31 behind the right side frame 11b and the transport device 101.
(1) Right side view of FIG. 7 The bleachers 10 are placed on the ground G, and the side frames 11b are in contact with the ground. The lever bar 110 of the transport device 101 is tilted forward, the collar 111 is lowered to align the connecting portion 112 with the height of the protrusion 31 of the bleachers 10, and the connecting portion 112 is externally fitted to the protrusion 31. As a result, the transport device 101 is temporarily connected to the bleachers 10.
(2) Central view of FIG. 7 A foot is placed on the foothold 122 of the pedal 121 of the transport device 101, and the grip portion 114 of the lever rod 110 is pulled toward the front. The connecting portion 112 is raised. As a result, the bleachers 10 are lifted from the ground G. According to the principle of leverage, the heavy bleachers 10 can be lifted with a small amount of human power.
(3) Left side view of FIG. 7 With the bleachers 10 lifted, the locking pin 140 is inserted by communicating the hole 113 of the connecting portion 112 of the lever 110 and the hole 32 of the protrusion 31 of the bleachers 10 (FIG. 7). 6A, see FIG. 6B). By inserting the locking pin 140, idling of the connecting portion 112 can be prevented and the connected state can be stably maintained.
The connecting structure in which the connecting portion 112 is externally fitted to the protrusions 30 and 31 does not require fastening work such as screwing, and the connecting work can be easily performed. The connecting force can be increased by a simple operation of inserting the locking pin 140 into the 113.
(4) Fig. 8
The transport devices 100 and 101 are connected to the other three protrusions 30 and 31 in the same manner, and the bleachers 10 are lifted at the four corners. With the bleachers 10 lifted, the grips 114 of the lever rods of the transport devices 100 and 101 are grasped and pulled or pushed to drive the wheels 130 and transport them to the installation position. Since the wheel 130 is a universal wheel, it can travel in any direction, but it is also possible to stop the turning of the wheel 130 and travel in a certain direction.
(5) When the bleachers 10 are transported to the installation location, the locking pins 140 of the bleachers 100 and 101 are pulled out to release the connection holding of the connecting portions 112 of the bleachers 100 and 101 and the protrusions 30 and 31 of the bleachers 10. .. When the connection is released, the bleachers 10 descend under their own weight and land. Then, the transfer devices 100 and 101 are removed from the bleachers 10 by removing them from the protrusions 30 and 31 of the connecting portion 112 of the lever rod 110.

When the bleachers 10 are used up, the transport devices 100 and 101 are attached and transported to the storage location in the same manner, and the transport devices 100 and 101 are removed.

The bleachers 10 being transported are lifted and only the wheels 130 of the transport devices 100 and 101 are in contact with the ground, but after the bleachers 10 are installed, they are grounded on the lower surfaces of the left and right side frames 11a and 11b. The load of the bleachers 10 during transportation is concentrated on the wheels 130, but after installation, the load is distributed to the side frames 11a and 11b having a larger area than the wheels 130. Therefore, damage to the installation surface such as the lawn and the floor can be minimized.

The transport devices 100 and 101 are used only when transporting the bleachers 10, and are not used during the installation and storage of the bleachers 10. Since the transfer devices 100 and 101 have a short usage time, they are less damaged or deteriorated. Among them, the wheel 130 is a portion where the load of the bleachers 10 is concentrated and easily damaged, but since the load is only received for a short time during transportation, there is little damage or deterioration. Further, since the removed transport devices 100 and 101 can be used for transporting different bleachers 10, by sequentially transporting and installing a plurality of bleachers 10, a small number of transport devices 100 and 101 can be used for large-scale viewing. You can build a seat.

The protruding directions of the protrusions 30 and 31 are not limited to the horizontal direction of the illustrated example, and the protrusions protruding upward or diagonally upward are also included in the technical scope of the present invention. However, since the collar 111 (connecting portion 112) can be slid and engaged with the protrusions 30 and 31 in the horizontal direction, the connecting work is easy and the protruding direction is preferable. The connecting means of the bleachers and the transport device in the present invention is not limited to the combination of the protrusions and the collar, and can be changed to other connecting means. As another connecting means, a combination of a protrusion (engagement portion) provided on the bleachers and a connecting portion for scooping up the protrusion from below can be exemplified. FIG. 9A is an example in which a block-shaped connecting portion 150 for scooping up a protrusion is attached to the tip of the lever rod 110. Cylindrical protrusions 30 and 31 (see FIGS. 4A and 4B) are attached to the upper surface of the connecting portion 150. A groove 151 having a semicircular cross section corresponding to the above is provided, and a hole 152 communicating with the hole 32 of the protrusions 30 and 31 is formed at the bottom of the groove. Slide the connecting portion 150 to fit the protrusions 30 and 31 into the groove 151, lift the bleachers by scooping up from below, and insert the locking pin 140 into the holes 32 and 151 that communicate with the protrusions 30 and 31 and the connecting portion 150. .. Further, FIG. 9B shows a connecting portion 155 having a flat upper surface, and a convex portion 156 for preventing the scooped up protrusions 30 and 31 from falling is formed at the tip of the connecting portion 155, and holes 32 of the protrusions 30 and 31 are formed on the upper surface. A hole 157 is provided in which the locking pin 140 is inserted.

As described above, in the type of connecting portion in which the protrusion is scooped up, there are few restrictions on the combination of the shape of the protrusion and the shape of the connecting portion, and the versatility is high. Of course, protrusions having a shape other than the cylindrical shape shown in the figure can be scooped up by the connecting portions 150 and 155. As a method of improving the stability of the connected state in the scooping-up type connecting portion, a groove 151 corresponding to the shapes of the protrusions 30 and 31 as shown in the connecting portion 150 of FIG. 9A can be mentioned. Further, even in the connecting portion 155 without the groove 151 in FIG. 9B, the connecting state can be stabilized by using the locking pin 140.

The wheel 130 can also be attached directly to the lever bar 110 without going through the plate 120. However, if the plate 120 as shown in the illustrated example is used, the lever rod 110 can be supported in an inclined posture at an arbitrary angle depending on the attachment angle of the lever rod 110 with respect to the plate 120, and the connecting portion 112 can be supported by the protrusion 30 of the viewing seat 10. The operability of the transfer devices 100 and 101 can be improved by setting the inclination angle so that the grip portion 114 is brought close to 31 and the grip portion 114 is easily gripped. Further, the rear portion of the plate 120 can be used as the pedal 121, and there is also an effect of improving operability such that it is easy to apply force by putting a foot on the pedal 121 and pulling the grip portion 114. The number of wheels of the transport device is not limited, and a plurality of wheels can be mounted in parallel or in series.

Further, the present invention does not determine the number of transport devices connected to one bleachers, and can be freely increased or decreased according to the dimensions and weight of the bleachers. The bleachers 10 in the illustrated example have a quadrangular base, and when the bleachers 100 and 101 are connected to the four corners to lift the bleachers 10, the lifting posture of the bleachers 10 is stabilized, so that the bleachers 10 can be safely transported. Of course, the form of the bleachers and the number of seats are not limited because the transport device can be connected to the bleachers if the base is provided with an engaging portion. The number and connection positions of the transport devices connected to one bleacher can be appropriately set according to the form and weight of the bleachers. In addition, if the engaging part is provided at a connecting position suitable for stable transportation of the bleachers and the engaging part becomes an obstacle after installation, a removable engaging part should be adopted and the engaging part should be removed after transportation. You can also do it.

Further, the transport device can also be used for transporting heavy objects other than the bleachers. If the heavy object to be transported has an engaging portion such as a protrusion, it can be engaged with the connecting portion of the transport device. Therefore, as in the case of the bleachers in the illustrated example, the heavy object is lifted by the principle of leverage to run the wheels. Can be transported by. Examples of the heavy object include a ball game goal, machinery, a stage, and stairs. Further, in the goal, the goal post corresponds to the base in contact with the installation surface, and the goal post is provided with an engaging portion to connect the transport device. However, if the engaging portion protrudes from the goal post, it is dangerous even if it is installed at a position that does not interfere with the competition, which is not preferable. In such a case, the engaging portion is made detachable by screwing or the like, and the engaging portion is attached during transportation. The same applies to other heavy objects, and if it gets in the way after installation, use a removable engaging part.

The present invention can be used for transporting heavy objects such as bleachers.

1 ... Mobile bleachers 10 ... Bleacher 11a Left side frame (base)
11b Right side frame (base)
30, 31 ... Protrusion (engagement part)
32 ... Holes 100, 101 ... Conveyor device 110 ... Lever bar 111 ... Collar (working part)
112 ... Connecting part 113 ... Hole 114 ... Gripping part (power point part)
120 ... Plate 121 ... Pedal 130 ... Wheel (fulcrum)
140 ... Locking pin G ... Installation surface

Claims (7)

It is composed of a bleachers with a space for accommodating people on the base in contact with the installation surface, and a transport device connected to the bleachers to transport the bleachers.
An engaging portion is provided on the base of the bleachers.
The transport device includes a lever rod and a wheel attached to an intermediate portion of the lever rod in the length direction to form a fulcrum portion, and the lever rod is attached to an action portion at the lower end and an engaging portion of the viewing seat. A mobile viewing seat characterized in that it has a detachably engaged connecting portion and a grip portion is formed at a power point portion at the upper end. The mobile type according to claim 1, wherein the engaging portion of the bleachers is a protrusion protruding from the base, and the connecting portion of the transport device engaged with the protrusion is a tubular collar that is externally fitted to the protrusion. Grandstand. The mobile bleachers according to claim 2, wherein a hole communicating with the protrusion and the collar is formed, and the connecting posture of the bleachers and the transport device is maintained by inserting a locking pin into the hole. The mobile bleachers according to claim 3, wherein a plate for supporting the inclined posture of the lever rod is attached to a fulcrum portion of the lever rod, and wheels are attached to the plate. The mobile bleacher according to claim 4, wherein the end of the plate is inclined downward to form a pedal. The movement according to any one of claims 1 to 5, wherein the base of the bleachers is a quadrangle, engaging portions are provided at the four corners of the base, and a transport device is connected to each engaging portion. Ceremony bleachers. It is a transport device that connects and transports a heavy object provided with an engaging portion having a hole.
A wheel having a working portion at the lower end portion that is detachably engaged with the engaging portion of the heavy object, and a lever rod having the upper end portion as a grip portion attached to a fulcrum portion at an intermediate portion in the length direction thereof. It is supported in,
The working portion has a hole that communicates with the hole of the engaging portion in a state where the engaging portion of the heavy object is engaged with the acting portion and the heavy object is lifted by the lever rod.
Further, the transport device is characterized by having a hole in the engaging portion of the heavy object and a locking pin inserted into the hole in the acting portion.

Images