JP2012041063A - Pallet for conveyance and assembly thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pallet for conveyance on which a workpiece including a heavy load is placed, which improves durability of a conveyor when conveyed on the conveyor, and which is made smaller and more lightweight.SOLUTION: The pallet P which is conveyed by a fork lift and the conveyor, includes: an upper wall 50 on which the workpiece 6 is placed; a fork insertion part F into which the fork of the fork lift can be inserted; and a bottom wall 51 which is placed on the conveyor 8 while abutting thereon. The fork insertion part F includes a main fork insertion part 40 formed of a metallic frame body 1 and a sub fork insertion part 60 formed of a synthetic resin pallet body 2. The upper wall 50 and the bottom wall 51 comprise the pallet body 2 combined/integrated with the frame body 1. The frame body 1 is supported by the conveyor via the bottom wall 51 together with the pallet body 2.

Description

  The present invention relates to a pallet for transportation that includes a pallet main body and a frame on which a workpiece can be placed and can be transported by a transport machine having a fork, and an assembly of the pallets.

For example, when the workpiece placed on the pallet is a heavy object having a large weight, the workpiece is placed on the pallet, for example, statically placed on the floor of a factory or warehouse. Static durability, and dynamic durability under conditions where dynamic loads such as inertial force and vibration are applied to the pallet, such as when transporting with a transport machine such as a forklift or transporting with a transport machine Is required. For this reason, the pallet is formed of a metal material, for example, a steel material, in order to ensure the required rigidity. For example, Patent Document 1 discloses a pallet on which an engine as a heavy object is placed and pillars provided at four corners can be folded.
It is also known that a pallet is formed of a synthetic resin that is a material having a specific gravity smaller than that of a metal (see, for example, Patent Document 2).

No. 6-27591 JP 2009-137640 A

  For example, when a work placed on a pallet is transported to a predetermined position in a factory by a conveyor, the work lowered from the pallet is transferred to the conveyor and then transported to a predetermined position by the conveyor. Since it is unloaded from the conveyor, it takes time to carry the transfer work. Therefore, in order to increase the efficiency of the transfer work, it is conceivable to transfer the pallet itself on which the workpiece is placed by a conveyor. However, when a metal pallet is placed on the conveyor, the load acting on the conveyor is increased due to the weight of the pallet, wear on the movable part of the conveyor is accelerated, and the pallet may damage the conveyor. Thus, the durability of the conveyor is reduced.

  On the other hand, in order to make it possible to place a heavy workpiece in a plastic pallet, the pallet is enlarged to ensure the required rigidity and is accommodated in a storage space in a transport container or transport machine. This causes a decrease in transportation efficiency due to a decrease in the number of pallets to be used and a decrease in utilization efficiency of the storage space.

  The present invention has been made in view of such circumstances, and is capable of placing a workpiece including a heavy object and, when being transported by a conveyor, makes it possible to improve the durability of the conveyor. An object is to provide a transport pallet that can be reduced in size and weight.

  The invention according to claim 1 is a transport pallet on which the work (6) can be placed and which can be transported by a transport machine (7) having a fork (7a) and a conveyor (8). 6) a work placement section (50) on which the fork is placed, a fork insertion section (F) into which the fork (7a) can be inserted, and a placement section placed in contact with the conveyor (8). (51), and the fork insertion portion (F) is a main fork insertion portion (40) configured by a metal frame (1), and the workpiece placement portion (50) and the placement target. The placing portion (51) is composed of a synthetic resin pallet main body (2) combined and integrated with the frame (1), and the frame (1), together with the pallet main body (2), Carry supported by the conveyor (8) through the placement part (51). It is a use palette.

According to this, when a pallet is mounted on a conveyor, the mounting part which is a part supported by the conveyor in a pallet is comprised by the pallet main body made from a synthetic resin. As a result, it is possible to suppress an adverse effect on the conveyor (for example, generation of scratches or dents due to an impact during placement on the conveyor) compared to a case where the placement portion is made of metal. Moreover, since the pallet body can be mounted on the conveyor together with the pallet body integrally with the frame body, the conveyor of the pallet body on which the workpiece is placed is compared with the case where the pallet body separated from the frame body is placed on the conveyor. The efficiency of the transfer work to is improved. Further, the weight of the pallet is reduced by reducing the weight of the pallet because the pallet body is made of synthetic resin, which contributes to improving the durability of the conveyor.
By using the main fork insertion part that is easy to achieve high rigidity because it is provided on the metal frame, the pallet body can be transported by a transport machine that has a fork even when the work is heavy. become.
By integrating the frame and pallet body, there is no need to secure a horizontal space between the frame and pallet body to facilitate separation, so the frame can be downsized, such as freight cars This makes it possible to efficiently use the storage space in the container of the transport equipment and increase the number of loads.
Since the placement portion is configured using the pallet main body, it is not necessary to facilitate the resin member constituting the placement portion separately from the pallet main body. As a result, the number of parts can be reduced and the cost can be further reduced.

Invention of Claim 2 is the pallet for conveyance of Claim 1, Comprising: The main fork insertion space (40s) formed by the said main fork insertion part (40) is in the insertion direction of the said fork (7a). Extending in a first direction that is a horizontal direction along the second direction, which is a horizontal direction orthogonal to the first direction, the width (W2) of the frame (1) and the width of the pallet body (2) (W12) is a transfer pallet that is substantially the same.
According to this, since the width of the frame body in the second direction with respect to the main fork insertion space into which the fork is inserted is substantially the same as the width of the pallet body, the pallet on which the workpiece is placed has the fork. Compared to a pallet in which a gap in the second direction is formed relatively large between the second frame of the frame body and the pallet body when stored in a storage space such as a container of a transport device by the transport machine, The pallet can be reduced in size in the second direction, and the number of pallets stored or loaded in the second direction in the storage space can be increased.

Invention of Claim 3 is a pallet for conveyance of Claim 1 or 2, Comprising: The said pallet main body (2) is integrated with the said frame (1) via the said main fork insertion part (40). It is a carrying pallet.
According to this, since the main fork insertion part which is a part of the frame is used for coupling and integrating the frame and the pallet main body, a dedicated member for integration becomes unnecessary. In addition, since the main fork insertion portion is a highly rigid portion in the pallet, the pallet can be reduced in size and weight while the pallet body is securely supported by the frame.

Invention of Claim 4 is a pallet for conveyance of any one of Claim 1 to 3, Comprising: The said fork insertion part (F) is the said main fork insertion part (40), and said said horizontal direction The fork (7a) can be inserted from a direction different from the main fork insertion part (40), and the sub fork insertion part (60) is constituted. The sub fork insertion part (60) is formed by the pallet body (2). It is a pallet for conveyance comprised.
According to this, when the work is heavy, in the empty state where the work is not placed on the pallet body, the work can be transported by the transport machine using the sub fork insertion part in addition to the main fork insertion part. This makes it possible to improve the efficiency of the pallet transport operation.

Invention of Claim 5 is the pallet for conveyance of any one of Claim 1 to 4, Comprising: The said frame (1) has a some support | pillar (20), Each said support | pillar (20 ) Is a standing part (21), a standing form connected to the upper end part (22) of the standing part (21), and a folding part (31) which is removed from the upper end part (22) and becomes a lying form. ), And a pallet for transportation provided with a covering member (3) that is attached to the upper end (22) and covers the upper end (22) when the folding part (31) is in the lying down state.
According to this, since the worker can be prevented from coming into contact with the upper end of the support column by the covering member at the time of the work loading / unloading work on the pallet, the safety of the loading / unloading work is improved.

The invention according to claim 6 is the work holding which is interposed between the work (6) and the work placing part (50) in order to place the work (6) on the work placing part (50). An assembly of pallets for transport, the first pallet (P1) and the second pallet (P2) being a pallet for transport according to claim 5 comprising a member (70), above the first pallet (P1). In the state where the second pallet (P2) is stacked through the cover member (3), the work holding member (70) and the second pallet (P2) installed on the first pallet (P1). ) In a non-contact state.
According to this, since it is not necessary to remove the workpiece holding member when stacking in an empty state after the workpieces are unloaded from the pallet body, the efficiency of the pallet stacking operation in an empty state is improved. Further, since the cover members can prevent the frames from contacting each other during stacking, the occurrence of wear and breakage due to the contact between the frames during transportation of the pallet is suppressed, and the durability of the pallet is improved.

  According to the present invention, there is provided a transport pallet capable of placing a workpiece including a heavy object and improving the durability of the conveyor when being transported by a conveyor, and further reducing the size and weight. can get.

It is a principal part disassembled perspective view of the pallet for conveyance which concerns on embodiment of this invention. It is a perspective view of the pallet of FIG. It is sectional drawing in the III-III line arrow of FIG. (A) is sectional drawing in the IV-IV line arrow of FIG. 3, (b) is an enlarged view of b part of (a). It is sectional drawing in the VV arrow line of FIG. It is a figure of the principal part centering on the support | pillar of the pallet of FIG. 2, and shows the standing form of the folding part of a support | pillar. It is a figure similar to FIG. 6, and shows the fall form of a folding part. It is a perspective view of the upper end part of the folding part of the support | pillar of FIG. 6, and a cap. It is a front view when the aggregate | assembly of the pallet of FIG. 2 is stacked in the loading state. It is a front view when the aggregate | assembly of the pallet of FIG. 9 is stacked in an empty state.

Hereinafter, embodiments of the present invention will be described with reference to FIGS.
Referring to FIGS. 1 and 2, a pallet for conveyance P according to an embodiment of the present invention is integrated with a frame 1 having a base 10 and a support column 20, and a work 6 (FIG. 9) is provided with a pallet main body 2 on which the pallet main body 2 can be placed, a cap 3 as a cover member detachably attached to the support column 20, and reinforcing portions 4 and 5 provided detachably attached to the pallet main body 2.
The frame body 1 and the reinforcing portions 4 and 5 are metal members, here, steel members. On the other hand, the pallet body 2 and the cap 3 are synthetic resin members, and are formed of a forming material having a specific gravity smaller than that of the metal that is the forming material of the frame 1.

  The workpiece 6 is, for example, an automobile engine as a heavy object or a transmission that is an automobile transmission device, but may be a lightweight object that is a member other than these heavy objects. Here, a heavy object means that when one or more workpieces are placed on the pallet main body 2, the pallet main body 2 alone has insufficient support rigidity, and it is difficult or impossible to transport the pallet main body 2 alone. It means the work of a certain weight.

  The frame 1 includes a steel base 10 in which the pallet body 2 is incorporated, and steel posts 20 provided at the four corners 11 to 14 of the base 10 to enable stacking of the pallets P, A steel reinforcing plate 19 is provided as a reinforcing member for connecting the base portion 10 and each support column 20.

  A base portion 10 having an outer shape of a substantially rectangular parallelepiped shape (or a substantially rectangular shape when viewed in the vertical direction (hereinafter referred to as “plan view”)) includes four corners 11 to 14 as a plurality of specific portions, and a horizontal portion. A first frame 16 that is a pair of first connecting members that are arranged to face each other in a first direction that is one of the directions and connects the corners 11, 12; 13, 14 to each other, and orthogonal to the first direction A second frame 17 that is a pair of second connecting members that are arranged to face each other in the second direction that is the horizontal direction and connects the corners 11, 13; 12, 14, and the main fork insertion space 40 s. And a pair of main fork insertion portions 40 as a plurality. As described above, each of the corner portions 11 to 14, the first and second frames 16 and 17, and the main fork insertion portion 40 are part of the base portion 10.

A pair of first frames 16 parallel to the second direction constitute a pair of first side portions of the base 10 together with the corners 11, 12; 13, 14, and the width of the frame 1 in the first direction. W1 (see FIG. 5) is defined. The pair of second frames 17 parallel to the first direction constitutes a pair of first side portions of the base 10 together with the corners 11, 13; 12, 14, and the frame 1 in the second direction. A width W2 (see FIG. 4) is defined.
Each first frame 16 is composed of a pair of upper and lower frames 16a and 16b arranged in parallel with each other in the second direction at intervals in the vertical direction. Each of the upper frame 16a and the lower frame 16b is made of a tubular material having a rectangular cross section (see also FIG. 5). The second frame 17 is made of a flat plate material (see also FIG. 4).

  1 to 5, the pallet body 2 having a substantially rectangular parallelepiped shape (or a substantially rectangular shape in plan view) is a lattice serving as a work placement portion on which a work 6 (see FIG. 9) is placed. The upper wall 50 and the pallet P are placed on the conveyor 8 (shown schematically by a two-dot chain line in FIGS. 3 and 5) as a placement portion that comes into contact with the conveyor 8. A plurality of grid-shaped bottom walls 51, a pair of first side walls 52 facing each other in the first direction, a pair of second side walls 53 facing each other in the second direction, and a plurality of top walls 50 and a plurality of bottom walls 51 connected to each other. Cylindrical connecting pillars 54 to 56 and a plurality of pairs of sub-fork insertion portions 60 each forming a sub-fork insertion space 60s. Thus, the upper wall 50, the bottom wall 51, the side walls 52 and 53, the connecting pillars 54 to 56, and the auxiliary fork insertion portion 60 are a part of the pallet body 2 that is integrally formed of synthetic resin.

Referring also to FIG. 3, each of the first and second side walls 52 and 53 is continuous with the upper wall 50 and the bottom wall 51. The connection pillars 54 to 56 are partly formed by the first and second side walls 52 and 53 and arranged at the peripheral edge of the pallet main body 2, and the center of the pallet main body 2 in plan view. It is comprised from the center connection pillar 56 arrange | positioned at the part. The peripheral connection columns 54 and 55 include peripheral connection columns 54 that constitute four corners of the pallet body 2.
In the pallet body 2, a pair of penetration spaces 57 (see FIG. 1) penetrating the pallet body 2 are formed in parallel to the first direction.

  Referring to FIGS. 1, 2, 4, and 5, the reinforcing portions 4 and 5 formed of a L-shaped cross section are parallel to the second direction and are opposed to each other in the first direction. A pair of first reinforcing portions 4 and a pair of second reinforcing portions 5 that are parallel to the first direction and are opposed in the second direction. The reinforcing portions 4 and 5 are coupled to the peripheral edge of the upper wall 50 of the pallet main body 2 along the side walls 52 and 53 by screws (not shown) as coupling means.

  Referring to FIGS. 6, 7, 9, and 10, each corner portion 11 to 14 having the same structure made of a tube having a rectangular cross section has a fitting portion 35 that is described later at the lower end portion thereof. A fitting portion 15a as a connecting portion is provided, and a stopper 15b with which a folding portion described later abuts is provided at an upper portion thereof. The stopper 15b is a protruding portion that protrudes upward on the collapsed side of the folded portion at the corner portions 11 to 14.

4 and 5, the width W3 in the vertical direction of the first frame 16 defined by the pair of upper and lower frames 16a and 16b is substantially the same as the width W13 of the pallet body 2 in the vertical direction. is there. The upper surface of the upper wall 50 of the pallet main body 2 (hereinafter referred to as “integrated pallet main body 2”) in an integrated state coupled to the frame 1 is in the vertical direction with the upper surface of the upper frame 16a. At almost the same position.
Further, the bottom surface of the bottom wall 51 of the pallet body 2 in an integrated state is substantially at the same position as the bottom surface of the lower frame 16b and the bottom surfaces of the corners 11 to 14 (see FIGS. 2 and 9). Then, it may protrude slightly below the lower frame 16b and the lower surfaces of the corners. As shown in FIG. 4B, the second frame 17 is substantially in the same vertical position as the second reinforcing portion 5 provided on the upper surface of the upper wall 50 with respect to the pallet body 2 in an integrated state. It is in.

Referring to FIGS. 1, 2, 4, and 5 together with reference to FIGS. 6 to 8, each support column 20 is fixed to the corners 11 to 14 and the corners 11 to 14 upward. And a foldable part 31 that can be connected to the upper end part 22 of the erected part 21. The folding part 31 can be folded so that it can take the standing form connected to the upper end part 22 and the fallen form removed from the upper end part 22.
The upright portion 21 composed of a U-shaped cross section has a guide portion 23 that forms a guide hole 24 into which the support shaft 34 of the folding portion 31 is inserted, and a locking portion provided at the upper end portion 22. And a pair of U-shaped engaging grooves 25 that open upward. The guide portion 23 and the engagement groove 25 are provided in a pair of wall portions 21a facing each other in the first direction, and the guide hole 24 has a shape that is long and narrow in the vertical direction.

On the other hand, the folding part 31 includes an insertion part 32 that is a lower part that is fitted and inserted into the upright part 21, a pair of protrusions 33 as locking parts that engage with the engagement groove 25, and the insertion part 32. And a support shaft 34 as a support portion inserted through the guide hole 24 and a fitting portion 35 as a connection portion as an upper end portion. The fitting part 35 is a cylindrical part whose tip is spherical.
The folded portion 31 is in a lying state, abuts on the upper surface of the upper frame 16a, occupies a position overlapping the upper frame 16a in plan view, and occupies a position below the upright portion 21.

  The folded portion 31 is shown in FIGS. 7 and 10 after the folded portion 31 is lifted upward from the standing state shown in FIGS. 2 and 6 and the protruding portion 33 is removed from the engaging groove 25. As described above, the pair of upright portions 21 or corner portions 11, 12; 13, 14 facing each other in the second direction is laid down inwardly so that the fitting portion 35 comes into contact with the upper surface of the upper frame 16 a and the stopper It takes the lying down form which contacts 15b.

Referring to FIGS. 7 and 8, the cap 3 that is attached to the upper end portion 22 of the upright portion 21 and covers the upper end portion 22 from above when the folding portion 31 is in the lying down form is composed of a quadrangular columnar main body 3a and a main body 3a. A lower fitting portion extending downward from the main body 3a, an upper fitting portion extending upward from the main body 3a, and a pair of engaging portions 3d provided on the lower portion 3b. At the same time that the lower part 3b is fitted to the upper end part 22, the engaging part 3d is engaged with the engaging groove 25, and the main body 3a contacts the upper end part 22 in the vertical direction, so that the cap 3 is mounted on the upper end part 22. .
When the cap 3 is not attached to the upper end portion 22, as shown in FIG. 9, the cap 3 is formed between the reinforcing plate 19 and the first reinforcing portion 4 or a work holding member 70 described later in the second direction. The gap is used as a storage space and stored in the storage space.

Referring to FIGS. 1 to 5, each main fork insertion portion 40 is formed by welding a main body 41, which is a U-shaped steel member whose cross-sectional shape opens downward, and welding as a coupling means to the main body 41. And a reinforcing member 45 provided in combination.
The main body 41 includes a flat plate-like ceiling portion 42 and a pair of plate-like hanging portions 43 that are continuous with the ceiling portion 42 and extend downward from the ceiling portion 42. A pair of hanging portions 43 that are parallel to the first direction and are opposed to each other in the second direction are provided with notches 44 that constitute a part of the sub-fork insertion portion 60. The notch 44 forms an opening 44a that is a part of the sub fork insertion space 60s.

  The reinforcing member 45 that reinforces the notch 44 is a pair of first reinforcing members 46 that face each other in the first direction and parallel to the second direction, and a pair that faces the second direction and parallel to the first direction. A second reinforcing member 47. Each first reinforcing member 46 is coupled to both hanging portions 43 at the notch 44 by welding, and each second reinforcing member 47 is coupled to the first reinforcing member 46 by welding.

The main fork insertion portion 40 is formed in a through space 57 parallel to the first direction through a pair of upper and lower frames 16a and 16b with respect to the pallet body 2 temporarily accommodated in the inner space of the base portion 10 for integration. After being inserted into the main body 41, the both ends 41a of the main body 41 are joined to the upper frame 16a and the lower frame 16b by welding as coupling means.
With the main fork insertion portion 40 fixed to the frames 16a and 16b, as shown in FIG. 3, the corners 11 to 14 and the first side walls 52 and 53 abut in the first direction. The movement of the pallet main body 2 in the first direction with respect to the base 10 is restricted, and the peripheral connecting columns 54 and 55 and the main body 41 abut in the second direction, whereby the pallet main body 2 in the second direction with respect to the base 10 is In a state where the movement is restricted and the pallet body 2 is fixed or substantially fixed to the base portion 10, the frame body 1 and the pallet body 2 are combined and integrated with each other. As another example, in this embodiment, the second reinforcing portion 5 (see FIG. 4) in which a slight gap is formed in the second direction and the second frame 17 (see FIG. 4) abut in the second direction. Thereby, the movement of the pallet main body 2 in the second direction with respect to the base 10 may be restricted.
Each sub-fork insertion portion 60 is constituted by a part of each of the upper wall 50, the bottom wall 51, the connecting columns 54 to 56, and the main fork insertion portion 40.

The main fork insertion portion 40 and the sub fork insertion portion 60 are conveyed by a forklift 7 as a conveyance machine in which the pallet P has a fork 7a (shown by a two-dot chain line in FIGS. 4A and 5). Sometimes, a fork insertion portion F (see FIG. 2) is formed which forms a fork insertion space Fs (see FIG. 3) into which the fork 7a can be inserted.
The main fork insertion space 40s penetrating the pallet P in the first direction extends in the first direction along the insertion direction of the fork 7a. The sub fork insertion space 60s penetrating the pallet P in the second direction extends in the second direction, which is a direction different from the first direction, along the insertion direction of the fork 7a.
The main fork insertion space 40s and the sub fork insertion space 60s constitute the fork insertion space Fs of the pallet P.

  Therefore, the pallet P can be conveyed by the forklift 7 and the conveyor 8. Further, the fork is inserted into the sub fork insertion portion 60 from a direction different from the main fork insertion portion 40 in the horizontal direction.

Referring to FIG. 4 (a), the width W12 of the pallet body 2 in the second direction is substantially the same as the width W2 of the frame 1, which is also the width of the base 10, and preferably in the second direction, the second frame. 17 and the corners 11 to 14 do not protrude from the second side wall 53 of the pallet body 2. Here, both the widths W2 and W12 are substantially the same when the widths W2 and W12 are the same, and when the widths W2 and W12 are different, the second frame 17 or the corners 11 to 14, The second side wall 53 is located at the same position in the second direction, that is, the second frame 17 or the corners 11 to 14 and the second side wall 53 are intersected with one plane orthogonal to the second direction. Means to be located.
In this embodiment, the second frame 17 and the second side wall 53 overlap with each other at least a majority of the second direction in the plan view, in this case, almost entirely. Therefore, when the second frame 17 or the corners 11 to 14 and the second side wall 53 are at the same position in the second direction, the second frame 17 or the corners 11 to 14 and the second side wall 53 are between. In this case, no gap is formed in the second direction.

Referring to FIG. 5, the width W11 of the pallet body 2 in the first direction is substantially the same as the distance between the pair of first frames 16 in the first direction. A pair of first frames 16 in a direction are arranged with a minute distance between them or in a state of being almost in contact with each other.
Thus, the pallet main body 2 in an integrated state is incorporated in the base 10 while being accommodated in the base 10 of the frame 1.

  Referring to FIG. 9, a plurality of, in this case, a set of two pallets P is composed of a first pallet P1 and a second pallet P2 which are all pallets P. And in each pallet P1, P2, the workpiece | work 6 is the upper wall 50 (refer FIG. 1) of the pallet main body 2 via the workpiece | work holding member 70 for preventing the vibration and movement of the workpiece | work 6 at the time of transportation, conveyance, etc. Placed on. The work holding member 70 is formed of a cushioning material such as foamed resin or synthetic resin. The first reinforcing part 4 restricts the movement of the work holding member 70 in the first direction, and the second reinforcing part 5 restricts the movement of the work holding member 70 in the second direction.

  And in the loading state in which the work 6 is placed on the pallet main body 2 of each pallet P1, P2 via the work holding member 70, the folding part 31 is in the standing form in each column 20 of each pallet P1, P2. . And the fitting part 35 of each support | pillar 20 of the lower 1st pallet P1 is fitted to the fitting part 15a of each corner | angular part 11-14 of the upper 2nd pallet P2, thereby both pallets P1, P2 is connected by frame bodies 1 and stacked in two stages. The number of pallets P stacked in the loaded state may be three or more.

Referring to FIG. 10, in each pallet P in an unloaded state after the workpiece 6 is lowered from the pallet P, the folding portion 31 of each support column 20 is in a lying down state, and the upper end portion 22 of each standing portion 21. Is fitted with a cap 3. Then, the upper part 3c of the cap 3 mounted on the standing part 21 of the lower first pallet P1 is fitted to the fitting parts 15a of the corresponding corners 11 to 14 of the upper second pallet P2, Both pallets P1, P2 in an empty state are connected to each other through the cap 3 and stacked in two stages. Note that the number of pallets P stacked in an empty state may be three or more.
Since the pallet P in the empty state or the stacked pallets P is lighter than the pallet P in the loaded state, the sub fork insertion portion 60 is used in addition to the main fork insertion portion 40. The forklift 7 can be transported.

In this stacked state, the cap 3 functions as an interval forming member that expands the interval in the vertical direction with respect to the stacked first and second pallets P1, P2. Therefore, even when the work holding member 70 is installed on the pallet body 2, the work holding member 70 placed on the first pallet P is in a non-contact state with the second pallet P2. A gap in the vertical direction is formed between the work holding member 70 installed on one pallet P1 and the bottom wall 51 of the pallet main body 2 which is the bottom of the second pallet P2.
Moreover, the cap 3 interposed between the frame bodies 1 of both pallets P prevents the corner portions 11 to 14 of the frame bodies 1 of the stacked pallets P from contacting the folding portion 31 of the support column 20. .

Next, operations and effects of the embodiment configured as described above will be described.
The transfer pallet P that can be transferred by the forklift 7 and the conveyor 8 includes an upper wall 50 on which the workpiece 6 is placed, a fork insertion portion F into which the fork 7a can be inserted, and a bottom that is placed in contact with the conveyor 8. The fork insertion portion F is a main fork insertion portion 40 configured by a part of the metal frame 1, and includes an upper wall 50 as a workpiece placement portion and a bottom as a placement portion. The wall 51 is constituted by a part of a pallet main body 2 made of synthetic resin that is coupled and integrated with the frame body 1, and the frame body 1 is supported by the conveyor 8 through the bottom wall 51 together with the pallet main body 2.

With this structure, when the pallet P is placed on the conveyor 8, the bottom wall 51, which is a portion of the pallet P that is supported by the conveyor 8, is configured by the pallet body 2 made of synthetic resin. As a result, it is possible to suppress an adverse effect on the conveyor 8 (for example, generation of scratches or dents due to an impact when placed on the conveyor 8) compared to a case where the bottom wall of the pallet body is made of metal. Moreover, since the pallet main body 2 can be mounted together with the pallet P on the conveyor 8 together with the frame body 1, the workpiece 6 is mounted compared to the case where the pallet main body 2 separated from the frame body 1 is mounted on the conveyor 8. The efficiency of the transfer work of the placed pallet body 2 to the conveyor 8 is improved. In addition, the weight of the pallet P due to the pallet body 2 being made of synthetic resin reduces the load acting on the conveyor 8, thereby contributing to improved durability of the conveyor 8.
By using the main fork insertion portion 40 that is easily provided with high rigidity by being provided on the metal frame 1, the forklift 7 can transport the pallet body 2 even when the workpiece 6 is heavy. It becomes possible.
By integrating the frame body 1 and the pallet body 2, there is no need to secure a horizontal space between the frame body 1 and the pallet body 2 for easy separation, so the frame body 1 is downsized. As a result, it is possible to efficiently use the storage space in the container of transport equipment such as a freight car and increase the number of loads.
Since the placement portion that contacts the conveyor 8 is configured using the pallet body 2, it is not necessary to facilitate the resin member that constitutes the placement portion separately from the pallet body 2. As a result, the number of parts can be reduced and the cost can be further reduced.

A main fork insertion space 40s formed by the main fork insertion portion 40 extends in a first direction that is a horizontal direction along the insertion direction of the fork 7a, and in a second direction that is a horizontal direction orthogonal to the first direction. The width W2 of the frame body 1 and the width W12 of the pallet body 2 are substantially the same.
With this structure, since the width W2 of the frame 1 in the second direction is substantially the same as the width W12 of the pallet body 2 with respect to the main fork insertion space 40s into which the fork 7a is inserted, the work 6 is placed. When the pallet P is stored or loaded in a storage space such as a container or a warehouse of a transport device by the forklift 7, the second direction between the second frame 17 of the frame body 1 and the pallet body 2 is the second direction. The pallet P can be reduced in size in the second direction, and the number of pallets P stored or loaded in the second direction in the storage space can be increased compared to a pallet having a relatively large gap.

  Since the pallet main body 2 is integrated with the frame body 1 through the main fork insertion portion 40, a part of the frame body 1 is used to combine and integrate the frame body 1 and the pallet main body 2. Since a certain main fork insertion part 40 is used, a dedicated member for integration becomes unnecessary, and the main fork insertion part 40 is a highly rigid part in the pallet P. Thus, the pallet P can be reduced in size and weight while being securely supported.

The fork insertion part is composed of a main fork insertion part 40 and a sub fork insertion part 60 into which the fork 7a can be inserted from an orthogonal direction which is different from the main fork insertion part 40 in the horizontal direction. Is constituted by a pallet body 2.
With this structure, when the workpiece 6 is heavy, a forklift that uses the sub fork insertion portion 60 in addition to the main fork insertion portion 40 in an empty state where the workpiece 6 is not placed on the pallet body 2. Therefore, it is possible to improve the efficiency of carrying the pallet P.

The base 10 of the frame 1 has four support columns 20. Each support column 20 has an upright part 21, an upright form connected to the upper end part 22 of the upright part 21, and a fallen form removed from the upper end. The pallet P includes a cap 3 that is attached to the upper end portion 22 and covers the upper end portion 22 when the folding portion 31 is in the lying down form.
With this structure, when the work 6 is unloaded from the pallet P, the cap 3 can prevent the operator from coming into contact with the upper end of the support column 20, so that the safety of the unloading work is improved.

In order to place the work 6 on the work placing portion, the pallet P including the work holding member 70 interposed between the work 6 and the upper wall 50 is used as the first pallet P1 and the second pallet P2. In the assembly, in a state where the second pallet P2 is stacked via the cap 3 above the first pallet P1, the work holding member 70 installed on the first pallet P1 and the second pallet P2 are not in contact with each other. It is in.
With this structure, it is not necessary to remove the workpiece holding member 70 when stacking the empty pallets P1 and P2 after the workpiece 6 is unloaded from the pallet body 2, so that the steps of the pallets P1 and P2 in the empty state are performed. The efficiency of loading work is improved. In addition, since the caps 3 can prevent the frame bodies 1 from contacting each other during stacking, the wear and damage caused by the contact between the frame bodies 1 when the pallet P is transported are suppressed, and the durability of the pallet P is improved. improves.

  Since the pallet body 2 is incorporated in the state of being accommodated in the base 10 of the frame 1 and integrated with the frame 1, the base 10 can protect the pallet body 2 made of synthetic resin. And since the pallet main body 2 is separated from the frame 1 and only the pallet main body 2 is not conveyed alone, the durability of the pallet main body 2 is improved.

Hereinafter, an embodiment in which a part of the configuration of the above-described embodiment is changed will be described with respect to the changed configuration.
Part of the pallet body 2 may be formed of a synthetic resin. The pallet body 2 may not be provided with the reinforcing portions 4 and 5.
The placement portion of the pallet body 2 may be configured by a part of the bottom wall 51.
The support column 20 may not be for stacking, and the frame 1 may not include the support column 20.
When in the standing state, the storage space of the cap 3 may be a sub-fork insertion portion 60 near the insertion port 60a (see also FIG. 3) of the sub-fork insertion space 60s, as shown in FIG. By storing the cap 3 in the vicinity of the insertion port, it is possible to reliably prevent an operator from accidentally inserting the fork 7a into the sub-fork insertion portion 60 with respect to the pallet P on which the workpiece 6 is placed. Can do.
The workpiece 6 may be placed directly on the upper wall 50 of the pallet P without using the workpiece holding member 70.
The workpiece may be an article other than an industrial product and an industrial article.

DESCRIPTION OF SYMBOLS 1 Frame 2 Pallet main body 3 Cap 6 Work 10 Base 20 Strut 21 Standing part 22 Upper end 31 Folding part 40 Main fork insertion part 50 Upper wall 51 Bottom wall 60 Sub fork insertion part 70 Work holding member P Pallet

Claims (6)

A transport pallet on which a work can be placed and can be transported by a transport machine having a fork and a conveyor,
A workpiece placement portion on which the workpiece is placed; a fork insertion portion into which the fork can be inserted; and a placement portion to be placed in contact with the conveyor;
The fork insertion part is a main fork insertion part constituted by a metal frame,
The workpiece placement portion and the placement portion are configured by a synthetic resin pallet main body integrated with the frame body,
The pallet for conveyance, wherein the frame is supported by the conveyor through the placement portion together with the pallet body. The pallet for conveyance according to claim 1,
A main fork insertion space formed by the main fork insertion portion extends in a first direction which is a horizontal direction along an insertion direction of the fork;
A conveying pallet, wherein a width of the frame body and a width of the pallet main body are substantially the same in a second direction which is a horizontal direction orthogonal to the first direction. The pallet for conveyance according to claim 1 or 2,
The pallet main body is integrated with the frame body through the main fork insertion portion, and a pallet for transportation. The pallet for conveyance according to any one of claims 1 to 3,
The fork insertion portion is composed of the main fork insertion portion and a sub fork insertion portion into which the fork can be inserted from a direction different from the main fork insertion portion in the horizontal direction,
The transport pallet is characterized in that the sub fork insertion portion is constituted by the pallet body. The pallet for conveyance according to any one of claims 1 to 4,
The frame body has a plurality of columns,
Each of the columns has an upright part, an upright form connected to the upper end part of the upright part, and a folded part that is removed from the upper end part and becomes a lying down form.
A transport pallet comprising a cover member that is attached to the upper end portion and covers the upper end portion when the folding portion is in the lying down state. The pallet for conveyance according to claim 5, further comprising a work holding member interposed between the work and the work placing part for placing the work on the work placing part. A collection of transport pallets,
The work holding member installed on the first pallet and the second pallet are in a non-contact state with the second pallet stacked above the first pallet via the cover member. An assembly of transport pallets characterized by

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