Transport jig, transport unit, and deployment method

Abstract

The mat is easily deployed by construction machinery. [Solution] A transport jig (31) is formed so that it can be attached to a pallet (11) on which a roll-shaped mat (1) is placed. The transport jig (31) is provided with a plurality of claws (32) whose tip ends are inserted into insertion ports (12) of the pallet, a connecting portion (33) that connects the base ends of the plurality of claws outside the pallet, and a handle (34) that is connected to the connecting portion and is held by a work tool of a construction machine. The plurality of claws are fixed to the pallet so that the pallet can be tilted downward, and the handle is held by the work tool.

Description

[Technical Field]

[0001] The present invention relates to a transport jig, a transport unit, and a method for unfolding a mat for reinforcing a running path. [Background technology]

[0002] At disaster sites where river channels are closed, multiple decking plates are laid out on soft ground to ensure a path for construction machinery. In recent years, mats have been developed that can easily ensure a path for construction machinery on soft ground, reducing the workload of installing decking plates. The mats are held on pallets and placed on the loading platform of a transport vehicle for transport to the target location. The mats are then manually removed from the pallets that have been unloaded from the loading platform and laid out on the soft ground. A towing jig is attached to the pallets carrying such cargo, and the pallets are pulled out of the loading platform of the transport vehicle and unloaded (see, for example, Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-294236 [Patent Document 2] Japanese Patent Application Laid-Open No. 2004-359291 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above method, workers must manually unfold the mat at the disaster site.

[0005] The present invention has been made in view of the above points, and has as its object to provide a transporting jig, a transporting unit, and a deployment method that enable a mat to be easily deployed by a construction machine. [Means for solving the problem]

[0006] One embodiment of the transport jig of the present invention is a transport jig that can be attached to a pallet on which rolled mats are placed, and has a plurality of claw portions whose tip ends are inserted into the insertion ports of the pallet, a connecting portion that connects the base ends of the plurality of claw portions outside the pallet, and a handle that is connected to the connecting portion and is held by a work tool of a construction machine, and the plurality of claw portions are fixed to the pallet so that the pallet can be tilted downward, and the handle is held by the work tool. [Effects of the Invention]

[0007] According to one aspect of the present invention, the pallet is transported by the construction machine via the transport jig by holding the handle with a work tool of the construction machine. At the deployment location, the pallet is tilted downward to drop the mat from the pallet onto the ground, and the rolled mat is deployed on the ground by the work tool. The mat can be easily deployed by the construction machine without manual deployment. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 2 is a perspective view of the carrying unit of the present embodiment. [Figure 2] FIG. 2 is a perspective view of the carrying unit of the present embodiment. [Figure 3] FIG. 10 is a diagram showing the tilted state of the pallet of the present embodiment. [Figure 4] 10A to 10C are explanatory diagrams illustrating a method for unfolding the mat of the present embodiment. [Figure 5] 10A to 10C are explanatory diagrams illustrating a method for unfolding the mat of the present embodiment. [Figure 6] FIG. 10 is a perspective view of a modified carrying unit. DETAILED DESCRIPTION OF THE INVENTION

[0009] The transport unit of this embodiment will be described below. Figures 1 and 2 are perspective views of the transport unit of this embodiment. Figure 3 is a diagram showing the tilted state of the pallet of this embodiment. Note that Figure 2 shows the state in which the transport jig is hooked by the bucket. In the following figures, arrow Fr indicates the front of the pallet, arrow Re indicates the rear of the pallet, arrow L indicates the left side of the pallet, and arrow R indicates the right side of the pallet.

[0010] As shown in Figures 1 and 2, a mat 1 for reinforcing a travel path is rolled up and attached to a transport unit 10. The mat 1 is provided with a plurality of rod-shaped core materials 2 (see Figure 2), which are arranged in parallel at predetermined intervals in the rolling direction. Attaching the mat 1 to the transport unit 10 enables the mat 1 to be transported via the transport unit 10 by a construction machine 5 such as a hydraulic excavator. When the mat 1 is deployed on soft ground by the construction machine 5, the load of the construction machine 5 traveling on the mat 1 is distributed over a wide area by the fabric material of the mat 1 and the core materials 2, preventing the construction machine 5 from sinking.

[0011] The transport unit 10 is provided with a pallet 11 on which the rolled mat 1 is placed, a pair of belts 21 that hold the mat 1 on the pallet 11, and a transport jig 31 that can be attached to the pallet 11. The pallet 11 is a flat pallet made of resin that is rectangular when viewed from above, with a pair of insertion openings 12 penetrating from the front to the rear of the pallet 11 and a pair of insertion openings 13 penetrating from the left side to the right side of the pallet 11. The pair of insertion openings 12 are formed so that a pair of forks 32 of the transport jig 31, which will be described later, can be inserted into them. The rolled mat 1 is placed on the pallet 11 so that it protrudes from the pallet 11 in the left and right directions.

[0012] One end of each belt 21 is provided with a first metal plate (first member) 22 fixed to the pallet 11, and the other end of each belt 21 is provided with a second metal plate (second member) 23 with a magnet that can be attached to and detached from the first metal plate 22. Each belt 21 is wound in a loop around the pallet 11 and the mat 1 so as to pass through the insertion opening 12 of the pallet 11, and the second metal plate 23 is attached to the first metal plate 22. In this case, the belt 21 extends forward from the first metal plate 22 through the insertion opening 12, and is folded back so as to contact the upper surface of the mat 1, and the second metal plate 23 at the other end of the belt 21 is fixed to the first metal plate 22 by the magnetic force of the magnet.

[0013] The mat 1 is fastened by a loop-shaped belt 21, which firmly presses the mat 1 against the pallet 11. Because the belt 21 wrapped around the mat 1 is tensioned, there is a sufficient gap between the placement surface of the pallet 11 and the belt 21. The bucket claws 7 of the construction machine 5 hook onto the belt 21 and tear off the belt 21, thereby removing the belt 21 from the pallet 11. Because the belt 21 is made removable from the pallet 11 by the bucket 6, there is no need for workers to enter a disaster site or the like and manually remove the belt 21 from the pallet 11.

[0014] The transport jig 31 is formed by connecting a pair of forks (claws) 32, a connecting portion 33, and a pair of hook bars (handles) 34. The pair of forks 32 correspond to a pair of insertion ports 12 of the pallet 11, and the tip sides of the pair of forks 32 are inserted into the pair of insertion ports 12. Inside the pair of insertion ports 12, the tip sides of the pair of forks 32 are fixed to the pallet 11 by bolting or the like. The pair of forks 32 are positioned inside the pair of belts 21 in the left-right direction, and the pair of forks 32 do not interfere with the pair of belts 21. The base ends of the pair of forks 32 are exposed to the outside of the pallet 11, and the base ends of the pair of forks 32 are connected via a connecting portion 33.

[0015] A pair of hook bars 34 are connected to the connecting portion 33 and spaced apart in the left-right direction. The pair of hook bars 34 extend upward from the connecting portion 33 and bend toward the pallet 11, and are formed in an L-shape in side view so as to hook onto the bucket (work tool) 6 of the construction machine 5. The left-right width of the pair of hook bars 34 is smaller than the spacing between the three bucket claws 7, and the pair of hook bars 34 are formed so that they can fit between the three bucket claws 7. The pair of hook bars 34 fits between the three bucket claws 7, and the central bucket claw 7 also fits between the pair of hook bars 34, making it difficult for the transport jig 31 to come off the bucket 6.

[0016] A pair of protrusions 35 protrude from the tips of the pair of hook bars 34 towards the pallet 11, and the protrusions 35 of the pair of hook bars 34 are formed to hook onto the inner surface of the bucket 6. Although details are omitted, the inner surface of the bucket 6 is formed with projections and recesses, and the protrusions 35 of the pair of hook bars 34 are hooked onto the convex or concave portions of the inner surface of the bucket 6 (see Figure 3). The protrusions 35 of the pair of hook bars 34 hook onto the bucket 6, making it difficult for the transport jig 31 to come off the bucket 6. As described above, the pair of forks 32 are fixed to the pallet 11, and the pair of hook bars 34 are hooked onto the bucket 6, making it possible for the pallet 11 to tilt downward.

[0017] 3(A) shows a state in which the pallet 11 is supported horizontally after the belts 21 have been removed from the pallet 11. In this case, the bent portions of the pair of hook bars 34 are supported by the bucket 6, and the pallet 11 is fixed to the tip ends of the pair of forks 32. A mat 1 is placed on the pallet 11, and the weight of the mat 1 and pallet 11 acts on the transport jig 31 in a counterclockwise direction as shown, with the bent portions of the pair of hook bars 34 acting as fulcrums. The pair of hook bars 34 extend into the bucket 6, and the tips of the pair of hook bars 34 hit hard against the inner surface of the bucket 6, holding the pallet 11 in a horizontal position.

[0018] 3(B) shows a state in which the pallet 11 is tilted downward. In this case, too, the weight of the mat 1 and pallet 11 acts on the transport jig 31 in the counterclockwise direction in the figure, with the bent parts of the pair of hook bars 34 as fulcrums, but the tips of the pair of hook bars 34 hit the inner surface of the bucket 6 hard, so the pallet 11 is held in a tilted position. In addition, because the tips of the pair of forks 32 are fixed to the pallet 11, the pallet 11 does not slip off the pair of forks 32. In this way, by hooking the pair of hook bars 34 onto the bucket 6, the bucket 6 can tilt the pallet 11.

[0019] A method for unfolding the mat will be described with reference to Figures 4 and 5. Figures 4 and 5 are explanatory diagrams of the method for unfolding the mat of this embodiment.

[0020] As shown in Figure 4(A), the mat 1 is loaded onto the vessel 9 of the off-road transport vehicle 8 together with the pallet 11 and transported to the disaster site. The mat 1 is held on the pallet 11 by a pair of belts 21, and a pair of forks 32 of a transport jig 31 are attached to a pair of insertion ports 12 of the pallet 11. A pair of hook bars 34 of the transport jig 31 are hooked between the bucket claws 7 of the bucket 6 of the construction machine 5, and the pallet 11 is lifted from the vessel 9 by the bucket 6. At this time, the pair of hook bars 34 enters between the bucket claws 7, and the protrusions 35 of the pair of hook bars 34 are hooked onto the inner surface of the bucket 6 (see Figure 3).

[0021] As shown in FIG. 4(B), the mat 1 is carried to the vicinity of the deployment site by the construction machine 5, and the bucket 6 detaches the pair of belts 21 from the pallet 11 (step of detaching the belts 21). In this case, the pallet 11 is lowered to the ground, and the bucket claws 7 are hooked onto the belts 21. The belts 21 are pulled up by the bucket claws 7, and the belts 21 are torn off, and the belts 21 are detached from the pallet 11. Note that instead of the belts 21 being torn off by the bucket claws 7, the second metal plate 23 may be pulled away from the first metal plate 22 against the magnetic force of a magnet, and the belts 21 may be detached from the pallet 11.

[0022] As shown in Figure 5(A), when the belt 21 is removed from the pallet 11, the pair of hook bars 34 of the transport jig 31 are hooked onto the bucket 6 again, and the bucket 6 transports the mat 1 to the deployment location (step of transporting the mat 1). In this case, the angle of the pallet 11 is adjusted by the bucket 6 to maintain the pallet 11 in a horizontal position, preventing the mat 1 on the pallet 11 from falling to the ground during transportation. In addition, the mat 1 placed on the pallet 11 is wound counterclockwise from the center of the mat 1 outward when viewed from the left side of the figure.

[0023] As shown in FIG. 5(B), when the mat 1 is carried directly above the unfolding location, the bucket 6 tilts the pallet 11 and unfolds the mat 1 on the ground (step of unfolding the mat 1). In this case, the rolling direction of the mat 1 when the pallet 11 is tilted coincides with the unfolding direction, and the rolled mat 1 rolls off the pallet 11 onto the ground, allowing a predetermined length of the mat 1 to unfold naturally. Then, the bucket 6 of the construction machine 5 rolls the remaining rolled portion of the mat 1 to form a path for the construction machine 5 to run at the unfolding location. The unfolding work of the mat 1 by the construction machine 5 is simplified by the amount of mat 1 that unfolds naturally.

[0024] As described above, according to the transport jig 31 of this embodiment, the pair of hook bars 34 are hooked by the bucket 6 of the construction machine 5, and the pallet 11 is transported by the construction machine 5 via the transport jig 31. At the deployment location, the pallet 11 is tilted downward, and the mat 1 drops from the pallet 11 to the ground, and the rolled mat 1 is deployed on the ground by the pallet 11. The mat 1 can be easily deployed by the construction machine 5 without having to be deployed manually.

[0025] In this embodiment, a bucket is used as an example of the work tool, but the configuration of the work tool is not particularly limited as long as it is capable of holding the transport jig. For example, the work tool may be a rotary fork. In this case, as shown in FIG. 6, a float 42 may be attached to a pair of hook bars 43 as a handle on the transport jig 41. Because the float 42 is gripped by the rotary fork and elastically deforms, it can be gripped without damaging the float 42, even in construction machinery where fine adjustment of force is difficult using a hydraulic system or the like.

[0026] In this embodiment, the first and second members of the belt are fixed by the magnetic force of a magnet, but the method for fixing the first and second members is not particularly limited. For example, a female hook-and-loop fastener may be provided on the first member and a male hook-and-loop fastener may be provided on the second member, and the first and second members may be fixed by the male and female hook-and-loop fasteners. Alternatively, a wedge hole may be formed in the first member, a wedge may be formed in the second member, and the wedge of the second member may be driven into the wedge hole of the first member, thereby fixing the first and second members.

[0027] In addition, in this embodiment, a pair of hook bars are exemplified as the handles, but the shape of the handles is not particularly limited as long as the handles are formed to be held by a work tool. Note that "held by a work tool" includes not only a configuration in which the handle is hooked by the work tool but also a configuration in which the handle is grasped by the work tool.

[0028] In addition, in this embodiment, an insertion port is formed in the pallet, but the bottom of the insertion port of the pallet may be open as long as the tip ends of the pair of forks (claw portions) can be inserted into the insertion port.

[0029] Furthermore, in this embodiment, the transport jig is provided with a pair of forks, but the transport jig may be formed with three or more claws.

[0030] In addition, in this embodiment, the mat is held on the pallet by a pair of belts, but the mat may be held on the pallet by a single belt, or the mat may be held on the pallet by three or more belts.

[0031] As described above, the first aspect is a transport jig (31) that can be attached to a pallet (11) on which a rolled mat (1) is placed. The transport jig (31) includes multiple claws (forks 32) whose tips are inserted into the pallet insertion slots (12), a connecting portion (33) that connects the base ends of the multiple claws outside the pallet, and a handle (hook bar 34) that is connected to the connecting portion and held by a work tool (bucket 6) of a construction machine. The multiple claws are fixed to the pallet so that the pallet can be tilted downward, and the handle is held by the work tool. With this configuration, the pallet is transported by the construction machine via the transport jig when the work tool of the construction machine holds the handle. At the deployment location, the pallet is tilted downward, and the mat drops from the pallet to the ground, and the work tool unfolds the rolled mat on the ground. The mat can be easily unfolded by the construction machine without manual labor.

[0032] In a second aspect, in the first aspect, the handle is a plurality of hook bars, the work tool is a bucket, the plurality of hook bars extend upward from the connecting portion and bend toward the pallet, and the plurality of hook bars are formed so as to be able to fit between the bucket claws. With this configuration, the plurality of hook bars fit between the bucket claws, making it difficult for the transport jig to come off the bucket.

[0033] In the third aspect, in the second aspect, the tips of the hook bars are provided with a plurality of protrusions (35) that hook onto the bucket. With this configuration, the protrusions of the hook bars hook onto the bucket, making it difficult for the transport jig to come off the bucket.

[0034] The fourth aspect is a transport unit that includes a pallet on which a rolled mat is placed, a belt (21) that secures the mat to the pallet, and a transport jig described in any one of the first to third aspects.

[0035] In a fifth aspect, in the fourth aspect, the belt is formed so as to be removable by a work tool. With this configuration, there is no need to remove the belt manually.

[0036] In a sixth aspect, in the fourth or fifth aspect, one end of the belt is provided with a first member (22) fixed to the pallet, and the other end of the belt is provided with a second member (23) detachable from the first member. The belt is looped around the pallet and mat so that it passes through an insertion opening on the pallet, and the second member is attached to the first member. With this configuration, the mat can be pressed down against the pallet by tightening the loop-shaped belt. The belt can be removed from the pallet by detaching the second member from the first member.

[0037] In a seventh aspect, in any one of the fourth to sixth aspects, the mat is placed on the pallet so that the rolling direction of the mat when the pallet is tilted coincides with the unfolding direction. With this configuration, the rolled mat rolls off the pallet onto the ground and unfolds naturally. This simplifies the unfolding work of the mat by the amount that the mat unfolds naturally.

[0038] An eighth aspect is a method for unfolding a mat on the ground by a construction machine via the transport jig, in which a rolled mat is placed on a pallet, the mat is secured to the pallet with a belt, a transport jig is attached to the pallet, and the mat is unfolded on the ground by the construction machine via the transport jig. The method includes the steps of: removing the belt from the pallet with a work tool of the construction machine; carrying the mat by holding the handle of the transport jig with the work tool; and tilting the pallet with the work tool to unfold the mat on the ground. The claws on the transport jig are inserted into insertion slots on the pallet, and the claws are secured to the pallet so that the pallet can be tilted downward, and the handle is held by the work tool. With this configuration, the pallet is transported by the construction machine via the transport jig by holding the handle with the work tool of the construction machine. At the unfolding location, the pallet is tilted downward, and the mat is dropped from the pallet to the ground, and the work tool unfolds the rolled mat on the ground. The mat can be easily unfolded by the construction machine without manual unfolding.

[0039] Although the present embodiment and modifications have been described, other embodiments may be obtained by combining the above-described embodiments and modifications in whole or in part.

[0040] Furthermore, the technology of the present invention is not limited to the above-described embodiments, and may be variously changed, substituted, or modified within the scope of the spirit of the technical idea. Furthermore, if the technical idea can be realized in a different way due to technological advances or other derived technologies, it may be implemented using that method. Therefore, the claims cover all embodiments that may fall within the scope of the technical idea. [Explanation of symbols]

[0041] 1: Matte 5: Construction machinery 6: Bucket (work tool) 7: Bucket claw 10: Transport unit 11: Palette 12:Outlet 21: Belt 22: First metal plate (first member) 23: Second metal plate (second member) 31:Transportation jig 32: Fork (claw) 33:Connection part 34: Hook bar (handle) 35: Protrusion

Claims

1. A transport jig that can be attached to a pallet on which a roll-shaped mat is placed, a plurality of claws whose tip sides are inserted into the insertion ports of the pallet; a connecting portion that connects base end sides of the plurality of claw portions outside the pallet; a handle connected to the connecting portion and held by a work tool of a construction machine, A transport jig, characterized in that the plurality of claws are fixed to the pallet so that the pallet can be tilted downward, and the handle is held by the work tool.

2. the handle is a plurality of hook bars, and the work tool is a bucket; The plurality of hook bars extend upward from the connecting portion and bend toward the pallet, 2. The transport jig according to claim 1, wherein the plurality of hook bars are formed so as to be able to enter between the bucket claws.

3. 3. The transport jig according to claim 2, wherein the tips of the hook bars are provided with a plurality of protrusions for hooking onto the bucket.

4. a pallet on which the rolled mat is placed; a belt for holding the mat on the pallet; A transport unit comprising: the transport jig according to any one of claims 1 to 3.

5. 5. The transport unit of claim 4, wherein the belt is removably formed by the work tool.

6. a first member fixed to the pallet is provided at one end of the belt; a second member detachable from the first member is provided at the other end of the belt; 6. The transport unit according to claim 5, wherein the belt is looped around the pallet and the mat so as to pass through the insertion opening of the pallet, and the second member is attached to the first member.

7. 5. The transport unit according to claim 4, wherein the mat is placed on the pallet so that the rolling direction of the mat when the pallet is tilted coincides with the unfolding direction.

8. A method for unfolding a rolled mat, comprising: placing a rolled mat on a pallet; holding the rolled mat on the pallet with a belt; attaching a transport jig to the pallet; and unfolding the rolled mat on the ground with a construction machine via the transport jig, removing the belt from the pallet with a work tool of the construction machine; carrying the mat by holding a handle of the transport jig with the work tool; and using the work tool to tilt the pallet and spread the mat on the ground, a claw portion provided on the transport jig is inserted into an insertion port of the pallet, The unfolding method is characterized in that the claw portion is fixed to the pallet and the handle is held by the work tool so that the pallet can be tilted downward.

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