Pallets and pallet stacks

Abstract

To provide a pallet body, a pallet shaft member, a pallet, and a pallet stack that can improve the efficiency and shorten the time required for loading and unloading pallets loaded with goods. [Solution] A pallet body 11 has a loading surface 11A on its surface, wherein a plurality of through holes 13 are spaced apart from each other along a first central axis C1 that extends vertically toward the back surface 11B with respect to the loading surface 11A, and recesses 15 extending radially outward from the through holes 13 are provided on at least one of the through holes 13, either on the loading surface 11A side or the back surface 11B side.

Description

Technical Field

[0001] The present invention relates to a pallet and a pallet stack.

Background Art

[0002] In cargo handling operations, pallets are used for the mechanization and labor saving of operations such as storage, transportation, and loading of goods (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Here, when loading and unloading goods stacked on a pallet onto a truck, a railway container, etc., it is necessary to position or unpack the pallet using a belt-like leather strap or the like inside the truck or railway container. However, these operations are still performed manually, resulting in a large workload and time consumption.

[0005] An object of the present invention is to provide a pallet and a pallet stack that can improve the efficiency and shorten the time of loading and unloading operations and stacking operations onto a truck, a railway container, etc.

Means for Solving the Problems

[0006] To solve the above problems, the present invention employs the following means. The pallet according to the present invention comprises a pallet body having a loading surface for cargo on its surface, and a pallet shaft member that engages with the pallet body, wherein the pallet body has a plurality of through holes spaced apart from each other along a first central axis extending vertically toward the back side with respect to the loading surface, and recesses extending radially outward from the through holes are provided on at least one of the loading surface side or the back side of the through holes, the pallet shaft member comprises a cylindrical shaft body having a second central axis and insertable into the through holes, and an engaging portion that protrudes radially outward from the shaft body to the outer edge of the recess when the shaft body is inserted into the through holes and is provided in the middle of the shaft body in the direction of the second central axis, the shaft body of the pallet shaft member is inserted into the through holes and the engaging portion and the recess are engaged.

[0007] Furthermore, in the pallet according to the present invention, the through-holes are arranged at the vertices of the triangle when the loading surface is viewed from above.

[0008] Furthermore, in the pallet according to the present invention, the shaft body is divided into a first shaft portion and a second shaft portion at the engaging portion in the direction of the second central axis, and the distance from the second central axis to the outer surface of the shaft body is different between the first shaft portion and the second shaft portion.

[0009] Furthermore, in the pallet according to the present invention, the outer diameter of the first shaft portion is such that it can be fitted into the through hole portion, and the outer diameter of the second shaft portion is smaller than the outer diameter of the first shaft portion.

[0010] Furthermore, in the pallet according to the present invention, a gap is formed between the back surface of the pallet body and the tip of the pallet shaft member.

[0011] Furthermore, the pallet stack according to the present invention comprises a plurality of pallets according to the present invention, wherein the pallet shaft member of another pallet is inserted into the through-hole of one of the pallets. [Effects of the Invention]

[0012] According to the present invention, the loading and unloading and stacking operations of pallets loaded with goods can be made more efficient and shorter in time. [Brief explanation of the drawing]

[0013] [Figure 1] These are a plan view and a side view showing the pallet body of one embodiment of the present invention. [Figure 2] This is a side view showing a pallet shaft member according to one embodiment of the present invention. [Figure 3] This is a side view showing a pallet related to one embodiment of the present invention. [Figure 4] This is a plan view showing a pallet mounting device on which a pallet according to one embodiment of the present invention is mounted. [Figure 5] This is a side view showing a pallet stack according to one embodiment of the present invention. [Figure 6] A side view showing a pallet stacking structure according to another embodiment of the present invention. [Figure 7] A side view showing a pallet stacking structure according to another embodiment of the present invention. [Modes for carrying out the invention]

[0014] One embodiment of the present invention will be described with reference to Figures 1 to 5. The pallet 10 according to this embodiment comprises a pallet body 11 having a loading surface 11A for cargo (not shown) on its surface, and a pallet shaft member 12.

[0015] The pallet body 11 has a predetermined thickness and is formed in a roughly square shape when viewed from above. The pallet body 11 has a plurality of through holes 13 having the same inner diameter along a first central axis C1 that extends vertically toward the back surface 11B side relative to the loading surface 11A, and these holes are arranged at six locations corresponding to the vertices of equilateral triangles T1 and T2 when viewed from above on the loading surface 11A side.

[0016] On each of the mounting surface 11A side of the through-hole portion 13 and the back surface 11B side of the pallet body 11, a recess 15 having a diameter larger than the inner diameter of the through-hole portion 13 is provided.

[0017] The pallet shaft member 12 includes a columnar shaft body 16 having a second central axis C2 and being insertable into the through-hole portion 13, and an annular engaging portion 17 that projects radially from the shaft body 16 to the outer edge of the recess when the shaft body 16 is inserted into the through-hole portion and is disposed midway in the direction of the second central axis C2.

[0018] The shaft body 16 is divided into a first shaft portion 16A and a second shaft portion 16B at the engaging portion 17, and is formed such that the outer diameters are different from each other. The outer diameter of the first shaft portion 16A is set to a diameter that can be inserted into the through-hole portion 13, and the outer diameter of the second shaft portion 16B is set to a diameter smaller than the outer diameter of the second shaft portion 16B. The thickness of the engaging portion 17 is approximately the same as the height of the recess 15.

[0019] The pallet shaft member 12 is inserted into the through-hole portion 13 corresponding to each vertex of the equilateral triangle T1 from the back surface 11B side of the pallet body 11 on the first shaft portion 16A side, and the recess 15 and the engaging portion 17 are engaged. At this time, a gap S is formed between the back surface 11B of the pallet body 11 and the tip of the pallet shaft member 12.

[0020] When the pallet 10 is mounted on a loading platform of a truck or a railway container (not shown), it is engaged with the pallet mounting device 20. This pallet mounting device 20 includes a base portion 22 that is formed to be fixed to the loading platform and has a hole portion 21 having a second central axis C2 disposed on the surface.

[0021] Each hole portion 21 has an inner diameter such that the second shaft portion 16B side of the pallet shaft member 12 can be inserted when the first central axis C1 of each recess 15 and the second central axis C2 of each hole portion 21 coincide when the pallet 10 is mounted on the pallet mounting device 20. The pallet laminate 25 is formed by laminating a plurality of pallets 10A and 10B in the directions of the first central axis C1 and the second central axis C2.

[0022] Next, the operation of the pallet body 11, pallet shaft member 12, pallet 10, and pallet stack 25 according to this embodiment will be described. First, the pallet mounting device 20 is fixed to a loading platform (not shown). The method of fixing it to the loading platform may be a known method.

[0023] When loading a pallet 10 onto the pallet mounting device 20, after selecting an appropriate pallet 10 considering the unloading order, a fork (not shown) is inserted into the gap S between the pallet shaft members 12 to lift the pallet 10, and then it is inserted into the loading platform and mounted on rails (not shown). After removing the fork, the pallet is moved to the back of the loading platform using a hoist (not shown) or the like, which is located inside the loading platform, along the rails (not shown).

[0024] After moving to a predetermined position, the pallet 10 is lowered once the alignment of each pallet shaft member 12 of the pallet 10 with each hole 21 of the base portion 22 of the pallet mounting device 20 is complete. At this time, the pallet shaft members 12 are inserted into and engaged with the holes 21, and the pallet 10 is mounted on the pallet mounting device 20.

[0025] During unloading, a hoist (not shown) or the like is used to lift the pallet 10, releasing the engagement between the pallet shaft member 12 and the hole 21, and removing it from the loading platform.

[0026] On the other hand, when stacking pallets 10B on the loading surface 11A side of pallet 10A to form a pallet stack 25, a hoist (not shown) or the like is used to lift the other pallets 10B, and the pallet shaft member 12 engaged with the pallet 10B is inserted into the through hole 13 on the loading surface 11A side of pallet 10A. In this way, a pallet stack 25 is formed by stacking multiple pallets 10A and 10B.

[0027] With this pallet body 11, pallet shaft member 12, pallet 10, and pallet stack 25, the pallet 10 is stably fixed to the loading platform by engaging the pallet 10 with the pallet mounting device 20 fixed to the loading platform. Therefore, there is no need to secure the pallet inside the loading platform using leather straps or the like, which can improve the efficiency and shorten the time required for loading and unloading operations.

[0028] It should be noted that the technical scope of the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the invention. For example, although the recess 15 is provided on both the loading surface 11A side of the through-hole 13 and the back surface 11B side of the pallet body 11, it may be provided on only one of the loading surface 11A side or the back surface 11B side.

[0029] When the recess 15 is located only on the loading surface 11A side, the pallet shaft member 12 engages with the pallet body 11 such that the engaging portion 17 protrudes from the back surface 11B, as shown in Figure 6. When forming the pallet stack 40, the recess 15 on the loading surface 11A side of one pallet 40A engages with the engaging portion 17 of another pallet 40B, and the two pallets 40A and 40B are stacked together.

[0030] On the other hand, if the recess 15 is located only on the back surface 11B side, as shown in Figure 7, the engaging portion 17 does not protrude from the back surface 11B when the pallet shaft member 12 engages with the pallet body 11. Similar to the above embodiment, one pallet 50A and another pallet 50B are stacked to form a pallet stack 50.

[0031] Furthermore, although the shaft body 16 is divided into a first shaft portion 16A and a second shaft portion 16B with the engaging portion 17 in between, and is formed so that their outer diameters are different, the outer diameters of the first shaft portion and the second shaft portion may be the same.

[0032] Furthermore, although the shaft body 16 is formed in a cylindrical shape and the engaging portion 17 is formed in an annular shape, the design is not limited to this. For example, the shaft body may be formed in a polygonal prism shape, and the engaging portion may have any shape as long as it protrudes radially outward from the shaft body. [Explanation of Symbols]

[0033] 10, 10A, 10B, 40A, 40B, 50A, 50B Pallet 11 Pallet body 11A Loading surface 11B Back side 13 Through hole 15 recesses 16. Main body of the shaft 16A First shaft part 16B Second shaft part 17 Engaging part 25, 40, 50 pallet stack

Claims

1. The pallet body has a loading surface on its surface, A pallet shaft member that engages with the pallet body, Equipped with, The pallet body has a plurality of through holes spaced apart from each other along a first central axis that extends vertically toward the back side with respect to the loading surface. A recess extending radially outward from the through-hole is provided on at least one of the loading surface side or the back surface side of the through-hole. The aforementioned pallet shaft member, A cylindrical shaft body having a second central axis and insertable into the through-hole, When the shaft body is inserted into the through hole, the engaging portion protrudes radially outward from the shaft body to the outer edge of the recess and is positioned midway along the second central axis of the shaft body, Equipped with, A pallet in which the shaft body of the pallet shaft member is inserted into the through hole and the engaging portion and the recess are engaged.

2. The pallet according to claim 1, wherein the through-holes are arranged at the positions of each vertex of a triangle when the loading surface is viewed from above.

3. The pallet according to claim 1, wherein the shaft body is divided into a first shaft portion and a second shaft portion in the direction of the second central axis at the engaging portion, and the distance from the second central axis to the outer circumferential surface of the shaft body is different between the first shaft portion and the second shaft portion.

4. The pallet according to claim 3, wherein the outer diameter of the first shaft portion is such that it can be fitted into the through hole portion, and the outer diameter of the second shaft portion is smaller than the outer diameter of the first shaft portion.

5. The pallet according to claim 1, wherein a gap is formed between the back surface of the pallet body and the tip of the shaft member for the pallet.

6. A pallet comprising multiple claims 1, A stack of pallets in which the pallet shaft member of another pallet is inserted into the through-hole of one of the aforementioned pallets.

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