JP2016145047A - Box-shaped pallet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a user-friendly box-shaped pallet by simple structure.SOLUTION: In a box-shaped pallet having a fork insertion part 2 for locking a fork of a forklift at a bottom wall of a body part 1 which is formed in a bottomed truncated pyramid cylinder whose area becomes the minimum at the bottom wall, a support plate 3 which is freely rotatable between a standby position along a sidewall of the body part 1 and a use position which is supported by at least two adjacent sides of an upper end opening, and supports a bottom wall part of other box-shaped pallet at the use position to stack other box-shaped pallet is attached to an upper end of a sidewall part of the body part 1, and a support leg 4 which is supported on the support plate 3 in a stack state, and holds the fork insertion part 2 of the box-shaped pallet on an upper stage side on an upper edge of the box-shaped pallet on a lower stage side is provided on the bottom wall part of the body part 1.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a box-type pallet.

  As a box-type pallet capable of stacking and nesting, the one described in Patent Document 1 is known. In this conventional example, the box-type pallet has a bottomed pyramid-shaped cylindrical bottom wall portion having a telescopic overhanging portion, and the upper-stage box-type pallet sequentially with the open end facing downward. Are stacked on the lower box-type pallet, and the overhanging portion with the lower end directed upward is supported on the upper edge of the lower box-type pallet for stacking.

JP 2006-199314 A

  However, in the above-described conventional example, when box-type pallets containing heavy objects are stacked, a bending moment is generated in the overhanging portion that behaves as a cantilever, with the free end rotating upward and the proximal end rotating downward. . For this reason, a reinforcement structure for increasing the bending strength of the overhanging portion and the peeling strength from the bottom wall in the holding portion of the overhanging portion is required, and the structure becomes complicated and the overall weight increases. There is a problem of end. In particular, when the dimensional difference between the bottom wall portion and the upper end opening edge is large, the arm length to the load point becomes long, so the bending moment generated at the overhanging portion becomes extremely large and the need for reinforcement becomes larger.

  Further, it is necessary to move the overhanging portion to the retracted position at the time of nesting. However, when the deformation due to the moment described above occurs in the retracted path, there is a problem that the extendability operability is deteriorated and the usability is deteriorated.

  The present invention has been made to eliminate the above drawbacks, and an object of the present invention is to provide a box-type pallet having a simple structure and good usability.

According to the present invention, the object is
A box-type pallet having a fork insertion portion 2 for locking a fork of a forklift to a bottom wall of a main body portion 1 formed in a bottomed truncated pyramid cylinder shape having a minimum area on the bottom wall,
At the upper end of the side wall portion of the main body 1, it is freely rotatable between a standby position along the side wall and a use position supported on at least two adjacent sides of the upper end opening. A support plate 3 is mounted for supporting the portion and stacking the other box-type pallet;
On the bottom wall portion of the main body 1, support legs 4 that are supported on the support plate 3 in a stacked state and hold the fork insertion portion 2 of the upper box pallet on the upper edge of the lower box pallet. Is achieved by providing a box-type pallet provided with

  The support plate 3 according to the present invention is formed in a bottomed truncated pyramid cylinder shape that is open upward, and is rotatably connected to the upper end opening of the main body 1 that can accommodate metal scrap or the like. Then, it is possible to move and operate between the rotation position and the stand-by position along the side wall depending on its own weight.

In the use position, the support plate 3 is placed on two or three adjacent sides of the main body 1 and bears the load of the other box-type pallet (P) stacked on the support plate 3. Therefore, the stress burden on the rotary hinge is reduced. That is, when the support plate 3 is supported on the two adjacent sides at the upper end of the main body 1 and there is a load point in a triangular region composed of a line segment connecting these two sides and the end points of the two sides, or is supported on the three adjacent sides. When there is a load point in a rectangular region including these three sides in the state of being applied, the reaction force against the load acts as a shear load on the support plate 3, so there is no stress load on the rotary hinge.

  Even when the load point is outside the region, if the load point is close to the region, the rolling moment generated in the support plate 3 is reduced, and the stress load on the rotary hinge is reduced.

  As described above, since a large load is not applied to the rotating hinge of the support plate 3 in the stacked state, the rotating operation is not deteriorated due to overload, and can be used stably over a long period of time.

  Furthermore, since the shear strength can be easily increased only by increasing the plate thickness or shear length of the sheared portion, no separate reinforcing structure is required.

  In addition, in the stacked state, the fork insertion part 2 of the upper pallet (P) is held above the upper edge of the lower pallet (P). It can be lifted using.

As another aspect of the present invention for achieving the above object,
The support plate 3 has a leg locking portion for locking the support leg 4 of the upper box-type pallet (P) in a stacked state to restrict the sliding of the upper box-type pallet (P) to the side. A box-type pallet (P) provided with 5 can be configured.

  In the present invention in which the support portion 4 and the support leg 4 of the upper pallet (P) are engaged with each other in the stacked state and the lateral displacement is restricted, it is possible to reliably prevent the collapse of the load. Become.

Furthermore, as another aspect of the present invention for achieving the above object,
The fork insertion portion 2 is formed in a rectangular cylindrical shape that is fixed over the substantially entire length between opposite sides by fixing the cover member 6 to the bottom wall back surface of the main body portion 1.
The cover member 6 can constitute a box-type pallet (P) that also serves as a grounding leg to the ground.

  In the present invention, the cover member 6 is used to form the rectangular cylindrical fork insertion portion 2, and the support leg 4 is grounded to the ground in order to use the flat bottom surface of the cylindrical portion as the grounding leg to the ground. Compared with the case of using a leg, the ground contact area is increased. As a result, there is no occurrence of tilt or the like even when a heavy object is accommodated.

As another aspect of the present invention for achieving the above object,
The side wall of the main body 1 has a fork insertion hole 7 which is opened at the upper end and through which the fork of the forklift can pass.
At the time of nesting, it is supported by the upper end of the other box-type pallet (P) in the lower stage to restrict the immersion into the other box-type pallet (P). A box-type pallet (P) provided with a nesting stopper 8 held above the upper edge can be configured.

  In the present invention, the nesting stopper 8 is provided to limit the depth of immersion into the lower box pallet (P) during nesting, so that the upper pallet (P) is wedged into the lower pallet (P). It is possible to surely prevent it from being stuck in and not being removed. Further, by adjusting the nesting depth by the nesting stopper 8 and holding the fork insertion hole 7 of the upper pallet (P) above the upper edge of the lower pallet (P), the pallet (P ) Can be taken out sequentially from the top.

  According to the present invention, since the support plate is simply connected to the main body, the structure can be simplified, and the rotation between the support plate and the use position can be performed only by rotating the support plate. Since it can be changed, the operability is improved and the usability can be improved.

It is a figure which shows this invention, (a) is a front view, (b) is a side view. It is a figure which shows this invention, (a) is a top view, (b) is a bottom view. It is a figure which shows a support plate, (a) is a figure which shows the attachment state to a main-body part, (b) is a 3B direction arrow directional view of (a). It is a figure which shows a support plate, (a) is a figure which shows the state connected with the main-body part, (b) is a figure which shows the state rotated to the use position, (c) is a figure which shows a stacking state. It is a figure which shows a nesting state, (a) is a principal part expanded sectional view, (b) is a front view.

  FIG. 1 and below show an embodiment of the present invention configured for conveying metal scrap. In this example, the box-type pallet (P) has a main body 1 formed by welding steel plates, a cover member 6 connected to the main body 1, a support plate 3, and support legs 4.

  The main body 1 is formed on a rectangular bottom plate 1a of about 1700 (mm) × 900 (mm) formed of a steel plate having a thickness of about 3 to 4 (mm) so that a heavy object can be accommodated therein. It has a quadrangular pyramid cylinder shape with an opening of about 1800 (mm) x 1000 (mm) at the top with a height of about 1100 (mm) by welding a steel plate of about 2 to 3 (mm) thick A flange 1b having a width of about 50 (mm) is provided on the entire periphery of the upper edge.

  The cover member 6 is formed by bending a steel plate into a hat shape, and two pieces are welded to the back surface of the bottom plate 1 a of the main body 1 along the short side of the main body 1. By fixing the cover member 6, a fork insertion portion 2 for inserting a fork of a forklift is formed on the back surface of the bottom plate.

  As will be described later, the cover member 6 serves as a load bearing member for the total load in the stacking state, and therefore, a steel plate having a thickness of about 4 to 5 (mm) is used to ensure strength.

  The support leg 4 is formed in a rectangular cylindrical shape, and is fixed to the back surface and the four corners of the bottom plate 1 a of the main body 1. The support leg 4 is formed with a lower height than the cover member 6 so that the cover member 6 becomes an installation leg when placed on the ground (E).

  The support plate 3 is a rectangular plate whose long side is substantially equal to the short dimension of the main body 1, and is 9 (mm) in order to receive the load of the stacked upper pallet (P), as will be described later. ) Grade steel plate is used to ensure strength, and one long side is cut away for weight reduction.

  As shown in FIG. 3, a hinge piece 9 having a hinge bent portion 9a at the tip is joined to the notch forming side of the support plate 3, and the hinge bent portion 9a and the flange 1b of the main body portion 1 are joined. The rotating shaft 11 is inserted and fixed in a state in which the hinge bending portion 10 a of the hinge piece 10 joined to the main body 1 is engaged with the main body 1.

  The support plate 3 connected to the main body 1 rotates around the rotation shaft 11 and can be moved between a use position shown on the right side and a standby position shown on the left side in FIG. .

  A spacer plate 3a is fixed to the support plate 3 in order to eliminate the level difference caused by the hinge piece of the main body 1 and rest on the flange of the main body 1 in the use position. .

  Therefore, in this example, when the support plate 3 is rotated to the use position, the support plate 3 provides a support surface for the support leg 4 of the other pallet (P), as shown in FIG. The pallets (P) can be stored in a stacking state in which the pallets (P) are sequentially stacked.

  Further, the support plate 3 is provided with a leg locking portion 5 that can be fitted into the support leg 4 of the upper pallet (P), and in the stacking state, the support plate 3 and the upper pallet (P) are connected to each other. The support legs 4 are locked with each other. As a result, the lateral movement of the upper pallet (P) relative to the lower pallet (P) is restricted, and the upper pallet (P) can be prevented from being accidentally displaced and collapsed.

  Further, as shown in FIG. 4C, the support leg 4 and the cover member 6 are set to dimensions such that the fork insertion portion 2 is held above the upper surface of the lower pallet (P) in the stacking state. Therefore, a fork can be inserted into the fork insertion part 2 of the pallet (P) at an arbitrary stage while being in the stacking state, and a plurality of pallets (P) stacked on the inserted pallet (P) can be taken out.

  In order to control the attitude of the support plate 3 at the standby position, as shown in FIG. 5, a plate stopper 12 is provided by joining an L-shaped angle member to the short side wall surface of the main body 1. The plate stopper 12 abuts against the support plate 3 suspended by its own weight, holds the support plate 3 in an inclined posture with the lower end portion displaced outward, and nesting the pallet (P) with each other. This prevents interference between the upper and lower support plates 3.

  A nesting stopper 8 is provided below the plate stopper in order to control the fitting depth between the main body portions 1 during nesting. The nesting stopper 8 is formed by joining an L-shaped angle material to the wall surface of the main body 1 in the same manner as the plate stopper described above.

  As shown in FIG. 5A, the nesting stopper 8 rides on the upper edge of the lower body portion 1 during the nesting operation, so that the outer wall surface of the upper body portion 1 and the lower body portion 1 This prevents the upper wall portion 1 from being taken out of the inner wall surface in a pressure contact state.

  In addition, a fork insertion hole 7 for inserting a fork of a forklift is formed on the long side wall surface of the main body 1 at an upper position from the upper edge of the lower main body 1 during nesting. As a result, as shown in FIG. 5B, only the uppermost fork insertion hole 7 communicates with the opposing fork insertion hole 7 in the nesting state, and the nesting state is sequentially eliminated from the uppermost pallet (P). can do.

DESCRIPTION OF SYMBOLS 1 Main-body part 2 Fork insertion part 3 Support plate 4 Support leg 5 Leg latching part 6 Cover member 7 Fork insertion hole 8 Nesting stopper P Pallet

Claims (5)

A box-type pallet having a fork insertion part for locking a fork of a forklift to a bottom wall of a main body part formed in a bottomed truncated pyramid cylindrical shape having a minimum area on the bottom wall,
At the upper end of the side wall portion of the main body portion, it is freely rotatable between a standby position along the side wall of the main body portion and a use position supported by at least two adjacent sides of the upper end opening. And a mounting plate for mounting the other box-type pallet by mounting the bottom wall of the
A box provided on the bottom wall of the main body with support legs that are supported on a support plate in a stacked state and hold the fork insertion portion of the upper box pallet on the upper edge of the lower box pallet. Mold pallet. The main body is formed in a quadrangular pyramid cylindrical shape,
The box-type pallet according to claim 1, wherein the support plate is rotatable around a rotation center along a pair of opposing edges and is supported by two sides adjacent to the rotation center corresponding side at the use position.   The leg plate is provided with a leg locking portion for locking the support leg of the upper box-type pallet in a stacked state and restricting the sliding of the upper box-type pallet to the side. The box-type pallet described. The fork insertion part 2 is formed in a rectangular cylinder shape that is fixed over the substantially entire length between opposing sides by fixing a cover member to the bottom wall back surface of the main body part 1.
The box-type pallet according to claim 1, 2 or 3, wherein the cover member also serves as a grounding leg to the ground. The side wall of the main body 1 has a fork insertion hole that is opened at the upper end and through which a fork of a forklift can pass,
A nesting stopper that is supported by the upper end of another lower box-type pallet during nesting and restricts immersion into the other box-type pallet and holds the fork insertion hole above the upper edge of the lower-stage box-type pallet; The box-type pallet according to any one of claims 1 to 4, wherein:

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