JPH06227666A - Distribution device of pallet - Google Patents

Abstract

PURPOSE:To distribute pallets accumulated on multiple steps to specified places individually one by one. CONSTITUTION:A distribution device of a pallet has a front setting and removing device 20, a fixed member 21 fixed on a ramp, an intermediate member 26 axially supported free to revolve through a rotary shaft 24 provided on the fixed member 21 and a front claw piece 25 free to revolve by a rotary shaft 27 provided on the intermediate member 26. Additionally, it has a guide bar 28 one end of which is installed on the left side part of the rotary shaft 27 of the front claw piece 25 and the other end part of which is installed on the right side part of the rotary shaft 24 of the fixed member 21 both free to rotate and a lateral operation bar 31 to reciprocally move through a rotary shaft 30 formed on a rib 29 formed on the intermediate member 26.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for distributing pallets stacked in multiple stages one by one to predetermined places.

[0002]

2. Description of the Related Art A product conveyed by a conveyor is placed on a pallet distributed at the end of the conveyor, and the full pallet is conveyed by a forklift or the like to a warehouse or the like. On the other hand, it is necessary to place a new pallet at the end of the conveyor.For such a pallet, when one pallet in which a plurality of pallets are stacked is carried to a predetermined place via a forklift, an employee drops one and another We are working on moving to a place and lowering one.

[0003]

Distributing pallets to predetermined places in the above-described work procedure requires a forklift operator and an operator to lower the pallets, and the pallet lowering work becomes a heavy labor. This leads to a reduction in work efficiency. Further, since the forklift is operated, it is necessary to widen the passage width. Therefore, the present invention provides a pallet distributing device that solves the above problem.

[0004]

A pallet distributing device according to a first aspect of the present invention is a pallet distributing device, wherein a front loading / unloading device is rotatable via a fixing member fixed to an elevating table and a rotary shaft provided on the fixing member. An intermediate member supported by a shaft, a front claw piece rotatable by a rotary shaft provided on the intermediate member, an end portion of the rotary shaft of the front claw piece on the left side and the other end of the rotary shaft of the fixed member. It has a guide rod that is rotatably attached together on the right side, and a lateral operation rod that reciprocates via a rotation shaft formed on a rib formed on the intermediate member. According to another aspect of the present invention, in the pallet distributing device, the rear loading and unloading device includes a rib formed on the left lower end portion and the right lower end portion of the rear nail piece on one side, a rib formed on the right side of the other rear nail piece, and A vertical operation rod that is rotatably supported by a rotation shaft provided on a rib formed at the lower left end of the rear claw piece and reciprocates.
One end of the rear claw piece is rotatably supported by a rotary shaft provided on a rib formed on the lower right end of the rear claw piece, and the other rotary shaft is provided on a rib formed on the right side of the rear claw piece. The other end has an intermediate rod rotatably supported. Claim 3
The pallet distributing device is provided with the front loading / unloading device according to claim 1 and the rear loading / unloading device according to claim 2, and connects the horizontal operating rod and the vertical operating rod with a swinging piece. 5. The pallet distributing device according to claim 4, wherein the horizontal mounting device is a reciprocating motion in which a pair of horizontal claw pieces is rotatably attached to the elevating table and rotatably attached to ribs provided on the horizontal claw pieces. And a pair of vertical operation rods that are rotatably supported by a rotating shaft provided on one connecting piece and reciprocate, and an end portion on the rotating shaft provided on the other connecting piece. And a pair of intermediate rods that rotatably rotatably support the rotary operation shaft, and the other end of which is rotatably rotatably supported by a rotary shaft provided on one of the connecting pieces, and the lateral operation rod and the vertical operation rod. And an oscillating piece of. A pallet distributing device according to a fifth aspect of the present invention has the configuration of the first, second, third, and fourth aspects, and has a trapezoidal guide whose lower end is inclined upward from the column toward the outside. The guide piece is fixed to a column that stands upright on the base, a moving piece that can slide up and down on the guide piece through a long hole, and an elastic body that constantly urges the column to tilt the guide piece upward. An automatic operation mechanism is composed of a rotary lever that is installed so as to obtain a rotational force while sliding and a swing piece that is directly connected to the rotary lever, and at least one of the horizontal operation rod and the vertical operation rod is shaken. It is configured by connecting with a moving piece.

[0005]

According to the first aspect of the present invention, the front claw piece is opened and closed in the front-rear direction through the guide rod and the intermediate member by reciprocating the lateral operation rod, thereby forming a pallet space in the front-rear direction. The stacked pallets are loaded and unloaded from the front side. According to a second aspect of the present invention, the reciprocating movement of the vertical operation lever opens and closes the rear pawl piece through the intermediate rod, forms a pallet space in the front-rear direction, and mounts and detaches the stacked pallets from the rear side. Claim 3
With the configurations of claims 1 and 2, the front and rear claw pieces are opened and closed to form a pallet space in the front-rear direction and stacked pallets are attached and detached from the front side and the rear side.
According to a fourth aspect of the present invention, the lateral claw pieces are opened and closed by the reciprocating motion of the lateral operation rod, and the pallets stacked to form a pallet space in the left-right direction are attached and detached from the left and right sides by the lateral claw pieces. Claim 5
, The automatic operation mechanism is activated by the raising and lowering of the platform,
Open or close the front or rear claw piece according to the position of the lift table.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an overall perspective view of a pallet distributing device of the present invention, and FIG. 2 is a view showing a pallet loading / unloading device. 1
Is a base made of a U-shaped steel material having an open front side, and casters 2 are movably attached to both front end portions and a rear side (not shown). Further, on the rear side of the base 1, a pair of support columns 3 that form guide grooves 4 to be described later are provided upright.
Reference numeral 5 is an elevating table smaller than the base 1, and an extension 6 is formed between the columns 3 at the rear part. In addition, guide rollers (not shown) are provided at both ends of the extended portion 6 in the guide groove 4.
It is slidably attached to. Further, a support 8 for mounting the lower pulley 7a is provided on the upper portion of the extending portion 6. Reference numeral 9 is a fixture for the upper pulley 7b fixed to the upper portion of the support column 3, 13 is an upper end fixture for the wire, and 11 is a box body containing a pulley for winding the wire 13 and fixed between the support columns 3. The wire 13 is fixed by the upper end fixing tool 13, is wound around the pulley inside the box body by being wound around the lower pulley 7a and the upper pulley 7b, and is wound up and down by the rotation of the handle 12. . That is, the lift table 5 is moved up and down by rotating the handle 12 in the normal direction and the reverse direction. Although not shown, it is preferable that the handle 12 is provided with a position for lowering or raising the lifting table 5, and an electric type is used instead of the handle, and control is performed by a limit switch, rotation speed control, or the like. It is also possible to adopt the method of doing.

Reference numeral 20 denotes a pallet front loading / unloading device, which is a device for loading / unloading front claw pieces in the space 18 of the pallet P, and a pair of left and right is formed and has the same structure. The same reference numerals are given to the parts that operate, and the description thereof will be omitted. Reference numeral 21 denotes a fixing member, which has a bolt hole 2 at its end.
2, a rotary shaft 24 is formed at the other end, and is fixed to the elevating table 5 (not shown) through the bolt holes 22 with bolts 23. Further, 26 is an intermediate member, which is the fixing member 2
It is rotatably supported by a rotary shaft 24 formed in 1. Reference numeral 25 denotes a front claw piece, which is rotatably supported by the intermediate member 26 via a rotary shaft 27. Reference numeral 28 denotes a rotary shaft 33 whose end portion is fixedly erected on the left side portion of the rotary shaft 27 of the front pawl piece 25 on the front pawl piece 25, and the other end is fixedly erected on the right side portion of the rotary shaft 24 of the fixing member 21. The guide rod is rotatably attached to the rotating shaft 34. Reference numeral 29 is a rib formed on the intermediate member 26, and is connected to a lateral operating rod 31 that reciprocates via a rotating shaft 30. Reference numeral 35 is an operation lever that can be removed via a thumbscrew 39, and 37 is a rotating shaft, which is fixed to the lift table 5 via a mounting tool 36. Operation lever 3
5. As is clear from the cross-sectional view (FIG. 3) of the rotary shaft 37,
The operation lever 35 is constantly urged upward by the elastic body 38. The key groove 40 formed on the rotary shaft 37 is formed downward from the lower position of the operation lever 35, and the safety is ensured so that the rotary shaft 37 does not rotate even if the operation lever 35 is rotated in a horizontal state. In addition, the operation lever 35 is configured to rotate when it overcomes the elastic force of the elastic body 38 and is fitted into the key groove 40. When an automatic operation mechanism for loading and unloading a pallet, which will be described later, is adopted, the operation lever 35 is unnecessary, and it can be removed via the thumbscrew 39. Reference numeral 43 denotes a dogleg-shaped swinging piece that is directly connected to the rotary shaft 37.
Is rotatably connected to the horizontal operation rod 31, and the other end is rotatably connected to the vertical operation rod 46 by the rotation shaft 45.

Reference numeral 50 denotes a rear loading / unloading device for the pallet, which allows the rear claw pieces 51a, 51b to be loaded / unloaded in the rear space 18 of the pallet P. Reference numeral 51a denotes a rear claw piece on one side, and a rib 52 is integrally formed at a lower left end portion of the claw piece 51a and a downwardly inclined rib 53 is integrally formed at a lower right end portion thereof.
The other end of the vertical operating rod 46 is attached to the rotary shaft 54 on the rib 52.
An intermediate rod 56 is attached to one rib 53 by a rotating shaft 55. Reference numeral 57 is a bolt hole fixed to the elevating table 5 with a bolt, and the rear claw piece 51a can be rotated by the bolt. The one rear nail piece 51b is
A rib 58 is formed on the right side, and the intermediate rod 56 is rotatably supported by the upper rotary shaft 59, and the lower rotary shaft 60 is pivotally supported by the vertical operation rod 46 on the other side. There is. still,
Reference numeral 61 is a bolt hole fixed to the lifting table 5,
1b is rotatable via a bolt (not shown) inserted in the bolt hole 61. The vertical operation rod 46, the intermediate rod 56, and the ribs 5 formed on the rear claw pieces 51a and 51b.
The mounting positions of 2, 58 are set at positions where the direction of the rotational moment is a predetermined direction, which will be described later in detail.

Next, the operation of the above configuration will be described with reference to FIGS.
Will be described with reference to. 2, which will be described later in detail, the front claw piece 25 and the rear claw pieces 51a, 51 via the handle 12.
b is set to the insertable position in the pallet space 18 at the bottom, and the operation lever 35 is rotated so that the front loading / unloading device 20 and the rear loading / unloading device 50 are not mounted on the pallet. afterwards,
Pallets P stacked in multiple stages can be
The state where the pallet space 18 is in the front-rear direction and is received in the lift 5 is shown (however, the size of the pallet is drawn small). Operation lever 3 with the pallet P received
While pressing 5 enough to overcome the elastic force of the elastic body 38,
When rotated in the clockwise direction (arrow in FIG. 2), the rocking piece 43 also rotates in the same direction. The lateral operation rod 31 moves to the left,
The intermediate member 26 is rotated clockwise about the rotation shaft 24 via the rib 29. By the rotation of the intermediate member 26,
The front claw piece 25 is rotated clockwise by the action of the guide rod 28 which is rotatable by the rotary shaft 33 and the rotary shaft 34, and is inserted from the front side of the pallet space 18 at the lowermost stage.

On the other hand, when the swinging piece 43 is rotated clockwise, the rear pawl piece 51a is bolted to the bolt hole 57 via the vertical operating rod 46.
Is rotated counterclockwise. Then, by the intermediate rod 56, the rear claw piece 51b is rotated clockwise around the bolt hole 61. That is, the rear claw piece 51a is rotated counterclockwise and the rear claw piece 51b is rotated clockwise and inserted into the space 18 of the pallet. Further, by the clockwise rotation of the rear claw piece 51b,
The oscillating piece 43 on the opposite side is rotated counterclockwise through the vertical operating rod 46 on the opposite side to move the lateral operating rod 31 on the opposite side to the left. Since the movement of the lateral operation rod 31 on the opposite side moves in the same direction as the lateral operation rod 31 described above, the front claw piece 25 rotates counterclockwise and is inserted into the front space 18 of the pallet. By the above operation, the pallet is in the mounted state with the pair of front claw pieces 25 and the rear claw pieces 51a and 51b.
Then, when the lifting table 5 is raised by the handle 12, the plurality of stacked pallets are floated from the floor, and the pallet distribution device is moved to the place where a new pallet is installed. When the place where the pallet is placed is reached, the lifting table 5 is lowered via the handle 12 so that the bottom pallet is placed on the floor. Then, the operation lever 35 is rotated in the opposite direction. By the reverse rotation of the operation lever 35, each component moves or rotates in the opposite direction of the arrow shown in FIG. As a result, as shown in FIG. 4, the front claw pieces 25 mutually rotate toward the lift table 5 to form a linear shape, and one rear claw piece 51a,
51b pivots inward and both are separated from the pallet space 18. Then, rotate the handle 12,
The lift table 5 is raised to the space 18 of the second-stage pallet to a position where the front claw pieces 25 and the rear claw pieces 51a and 51b can be inserted. Then, the front claw piece 25 and the rear claw pieces 51a, 51b are inserted into the space 18 of the pallet via the operation lever 35,
Install the second pallet. Then, by rotating the handle 12 and raising the elevating table 5 a little, a gap is formed between the lowermost pallet and the second pallet, and the pallet distribution device newly places the pallet in such a state. Move to a place. Hereinafter, by repeating the above operation, the pallets can be sequentially distributed to predetermined places.

In the above-mentioned mechanism, in order to open and close the front claw piece 25, the lateral operating rod 31 is reciprocally moved.
On the other hand, since it is possible to reciprocate the vertical operating rod 46 to open and close the rear claw pieces 51a and 51b,
The lateral operation rod 31 and the vertical operation rod 46 may be configured to be reciprocally movable via a cylinder or the like. Further, in a light pallet made of plastic or the like, it can be constructed only by the front loading / unloading device 20 or the rear loading / unloading device 50. The front loading / unloading device 20 adopts the mechanism shown in FIG. Instead of the detaching device 50, it is also possible to configure a mechanism in which the rear claw pieces 51a and 51b are directly connected to a reciprocating cylinder.

Next, an automatic operation mechanism 70 for automatically loading and unloading a pallet will be described with reference to FIGS. 2 and 5 (A in FIG. 2).
-A arrow view). That is, by rotating the operation lever 35, the front claw piece 25 and the rear claw piece 5 are rotated.
Although the pallets 1a and 51b were loaded / unloaded into / from the space 18, the operation lever 35 is rotated by the following configuration. Base 1
A trapezoidal guide piece 74 whose lower end is inclined 74a outward from the support column 73 is fixed to the support column 73 standing upright. Further, a long hole 76 is formed in the moving piece 78, and the two upper and lower guide bolts 7 inserted into the long hole 76 are inserted.
It is slidable up and down with the guide piece 74 through 7. On the other hand, the rotary lever 71 is provided on the rotary shaft 37 that is directly connected to the swing piece 43, and the support 7 is provided via the elastic body 72.
It is always biased to the 3 side, and is attached so as to obtain a rotational force while sliding on the upper slope 74a of the guide piece 74.

Next, regarding the operation of the automatic operation mechanism 70,
This will be described with reference to FIGS. 2 and 4 and FIGS. 6 to 10 showing the concept. In addition, P is a pallet, 25 is a front nail piece, 51a, 51
“B” indicates a rear claw piece, which indicates a positional relationship between each claw piece and the pallet. In FIG. 6, a plurality of (three-stage) pallets are attached to the front loading / unloading device 20.
Alternatively, it shows a state in which the lifting table 5 is set at the lowest position, that is, the stacked pallets are set on the floor via the handle 12 after being mounted by the rear loading / unloading device 50. The rotary lever 71 descends together with the elevating table 5, the rotary lever 71 comes to a position lower than the lower end portion of the moving piece 78, and the urging force of the elastic body 72 causes the pillar 7 to move.
Abut on 3. The urging force of this elastic body 72 is
Is rotated in the clockwise direction (in FIG. 2), and the front claw pieces 25 and the rear claw pieces 51a and 51b are separated from the pallet space 18 by the action described above, as shown in FIG. Figure 7
FIG. 7 is a diagram in which the lift 5 is raised from the state of FIG. 6 via the handle 12. The rotation lever 71 also rises as the lift table 5 rises, and the front claw piece 25 and the rear claw pieces 51a and 51b move to 2
Ascend to near the pallet position on the tier. In addition, the guide piece 74
Rises as the rotary lever 71 rises. The front nail piece 2
The ascending position such as 5 is adjusted at the height h1 shown in FIG. 6 in consideration of the thickness of the pallet. FIG. 8 is a view in which the lifting table 5 is further raised by the handle 12, and the rotary lever 71
Moves up while sliding on the upper slope 74a of the guide piece 74. The rotary lever 71 that rises while sliding on the upward slope 74a obtains a rotational moment (counterclockwise direction shown in FIG. 2). By this rotation, the rocking piece 43 rotates counterclockwise, and as described above, the front claw piece 25, the rear claw piece 51a, and 5c.
Actuating 1b in the space 18 of the pallet,
Install the pallet. Furthermore, when the lift 5 is raised,
As shown in FIG. 9, the rotary lever 71 rises while coming into contact with the side portion of the guide piece 74, and the second pallet is separated from the lowermost pallet. On the other hand, the moving piece 78 descends due to its own weight. In this state, if the pallet distribution device is moved to another place, the bottom pallet shown in FIG. 9 is placed on the floor. While maintaining the state of FIG. 9, the distribution device that has been moved to another placement location has the handle 12
The elevating table 5 is lowered via the (FIG. 10). The rotary lever 71, while being urged by the elastic body 72, comes into contact with the side portion of the guide piece 74 and the side portion of the moving piece 78 and descends as the elevator table 5 descends. Therefore, the rotary lever 71 rotates only slightly due to the step difference between the guide piece 74 and the moving piece 78, but the front claw piece 25 and the rear claw pieces 51a and 51b are lifted up and down while being mounted in the pallet space 18. The platform 5 descends. Then, when the lifting platform 5 further descends and the bottom pallet is placed on the floor, the rotary lever 71 is disengaged from the moving piece 78 and the elastic body 72 causes the elastic lever 72 to move to the initial state, as shown in FIG. Abut on the column 73. At this time, the rotary lever 71 rotates clockwise, and the front claw piece 25 and the rear claw piece 5 are rotated as described above.
1a and 51b are separated from the pallet space 18. By repeating the above steps, the pallet can be attached / detached only by raising / lowering the elevating table 5 via the handle 12 (or an electric motor), and the position of the elevating table and the attachment / detachment of the claw pieces can be mistaken. Since there is no operation, safety can be ensured.

Next, FIG. 11 is a view showing a horizontal loading / unloading device corresponding to the case where the pallet spaces are stacked in the left-right direction.
In this embodiment, as is clear from FIG. 11, a horizontal loading / unloading device 90 is attached instead of the front loading / unloading device 20, and the rear claw piece 51 is provided.
This is a configuration in which a and 51b are eliminated, the same parts are designated by the same reference numerals, and description thereof will be omitted. The pair of horizontal claw pieces 91 are rotatably attached around the lifting table 5 and the rotary shaft 92, and reciprocate on the rotary shaft 93 provided on the rib 98 formed to be inclined and projected on the horizontal claw piece 91. The moving lateral operating rod 31 is connected via a rotating shaft 97. The other end of the lateral operation rod 31 is connected to the swing piece 43 via a rotary shaft 44. Reference numeral 94 is one connecting piece, and 95 is the other connecting piece. The vertical operating rod 46 and the intermediate rod 5 connecting the connecting pieces 94, 95 to each other.
6 is the same as in FIG. That is, in this embodiment, the rear claw pieces 51a and 51b shown in FIG. 2 are cut. In the manual operation, the swing lever 43 is rotated by the rotation of the operation lever 35, and the lateral operation rod 31 reciprocates in the manual operation. As a result, the lateral claw piece 91 rotates around the rotation shaft 93 and can be loaded / unloaded to / from the space 18 of the pallet in the left-right direction. Incidentally, the operation of raising and lowering the elevating table 5 and the case of using the automatic operation mechanism 70 are the same as those described above, and therefore the description thereof will be omitted.

[0009]

According to the pallet distributing apparatus of the present invention, the lifting / lowering of the lifting platform and the loading / unloading of the pallet can be easily performed, so that the working efficiency can be improved and the automatic operation mechanism can be adopted. If this is the case, it is possible to distribute the pallets to the predetermined place more easily.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a pallet distribution device.

FIG. 2 is a perspective view showing a front and rear loading / unloading device of a pallet.

FIG. 3 is a view showing a partial cross section of an operating lever.

FIG. 4 is a diagram showing an open state of front claw pieces and rear claw pieces of the front and rear loading / unloading device of the pallet.

FIG. 5 is a view showing an automatic operation mechanism as seen from arrows AA of FIG.

FIG. 6 is a diagram for explaining the operation of the pallet automatic operation mechanism.

FIG. 7 is a diagram illustrating the operation of an automatic pallet operation mechanism.

FIG. 8 is a diagram illustrating an operation of an automatic pallet operation mechanism.

FIG. 9 is a diagram for explaining the operation of the pallet automatic operation mechanism.

FIG. 10 is a diagram for explaining the operation of the pallet automatic operation mechanism.

FIG. 11 is a perspective view showing a horizontal loading / unloading device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base 5 Lifting table 18 Pallet space 20 Front loading / unloading device 21 Fixing member 25 Front claw piece 26 Intermediate member 28 Guide rod 31 Horizontal operating rod 35 Operating lever 43 Swinging piece 46 Vertical operating rod 50 Rear loading / unloading device 51a, 51b Rear claw pieces 52, 53 Ribs 56 Intermediate rod 70 Automatic operation mechanism 72 Elastic body 73 Struts 74 Guide pieces 76 Long holes 78 Moving pieces 90 Horizontal loading / unloading device 91 Horizontal claw pieces

Claims (5)

[Claims] 1. A pallet distributing apparatus having a movable base, a vertically movable elevator, and a pallet loading / unloading device, wherein the loading / unloading device is fixed to the elevator. An intermediate member rotatably supported by a rotary shaft provided on the fixed member, a front claw piece rotatable by a rotary shaft provided on the intermediate member, and an end portion of the front claw piece. Of the rotary shaft of the fixed member, the other end of which is rotatably mounted on the right side of the rotary shaft of the fixed member, and reciprocates through the rotary shaft formed on the rib formed on the intermediate member. A pallet distribution device having a lateral operation rod. 2. A pallet distribution device having a movable base, a vertically movable lift, and a pallet rear loading / unloading device, wherein the rear loading / unloading device is a left lower end of a rear nail piece on one side. Part and the rib formed on the lower right end, the rib formed on the right side of the other rear pawl piece, and the rib formed on the left lower end portion of the rear pawl piece on one side rotatably via a rotary shaft A vertical operating rod that is pivotally supported and reciprocates, and an end portion is rotatably supported by a rotary shaft provided on a rib formed on the lower right end portion of the rear claw piece on one side, and the right side of the other rear claw piece. A pallet distributing device, comprising: a rotating shaft provided on a rib formed on the second end; and an intermediate rod whose other end is rotatably supported. 3. A pallet distribution device having a movable base, a vertically movable lift, and a pallet loading / unloading device and a pallet loading / unloading device according to claim 1. Item 2. A pallet distributing device comprising a rear loading and unloading device of Item 2, wherein the horizontal operating rod and the vertical operating rod are connected by a swinging piece. 4. A pallet distribution device having a movable base, a vertically movable elevator, and a pallet horizontal loading / unloading device, wherein the horizontal mounting device is rotatably attached to the elevator. A pair of horizontal claw pieces, a reciprocating lateral operation rod rotatably attached to a rib provided on the horizontal claw pieces, and a rotatable shaft via a rotary shaft provided on one connecting piece. A pair of vertical operation rods supported and reciprocally moved, and an end portion rotatably supported on a rotary shaft provided on the other connecting piece, and the other end portion on a rotary shaft provided on one connecting piece. A pallet distributing device, comprising: an intermediate rod rotatably supported by a shaft; and a pair of swinging pieces that connect the lateral operating rod and the vertical operating rod. 5. An automatic operation mechanism, wherein a guide piece having a trapezoidal lower end inclined upward from the support pillar is fixed to a support pillar standing on a base, and a guide piece is provided through a long hole. Directly connected to the rotation lever, the movable piece that can slide up and down, and the rotation lever that is always biased by the elastic body toward the column side so as to obtain the rotation force while sliding with the upward inclination of the guide piece. 5. The pallet according to claim 1, claim 2, claim 3, or claim 4, characterized in that at least one of a horizontal operating rod and a vertical operating rod is connected to the swinging piece. Distribution device.