JPH08310614A - Pallet dropping prevention method for storage rack and device thereof - Google Patents

Abstract

PURPOSE: To prevent a pallet from dropping even if vibration such as earthquake occurs when the pallet is stored in respective racks. CONSTITUTION: A roller member 69 connected to a pendulum 59 in an ordinary case is fitted between a stopper plate 93 and a pallet lock member 43, and a locking part 45 formed at the pallet lock member 43 is separated from an engagement part 47 mounted onto a pallet P, so the pallet P is in a freely movable condition. If vertical and horizontal vibration such as earthquake occurs, the pendulum 59 oscillates and the roller member 69 separates from between the stopper plate 93 and the pallet lock member 43, so that the pallet lock member 43 moves upward by tensile force of a spring 89 and the locking part 45 formed at the pallet lock member 43 is inserted and fixed in the engagement part 47 formed at the pallet P. It is thus possible to prevent the pallet P from dropping off respective racks 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pallet drop preventing method and apparatus for a storage rack.

[0002]

2. Description of the Related Art Conventionally, in storage shelves such as automatic warehouses, pallets each having a work loaded thereon are supported and stored. The pallet P loaded with this work W is shown in FIG.
As shown in FIG. 6 and FIG. 6, the wheel 103 is attached to one of both ends in the loading / unloading direction (left and right direction in FIGS. 5 and 6) so as not to drop from each shelf 101 and to facilitate loading / unloading. On the other hand, the stopper block 10
5 are provided.

On the other hand, a stopper block 107 is provided on each of the shelves 101 so as to face the stopper block 105, and the stopper block 105 is engaged with the stopper block 107. A plurality of hooks 109 are provided on the left side of the pallet P in FIGS. 5 and 6.

When loading and unloading the pallet P, the
As shown in FIG.
A traverser 111 is provided on the top, and a hook 113 provided on the traverser 111 is engaged with a hook 109 provided on the pallet P. Then, the pallet P can be moved on the shelf 101 by slightly lifting the stopper block 105 side provided on the pallet P by the traverser 111 and separating the stopper block 105 from the stopper block 107 provided on the shelf 101. .

[0005]

On the other hand, on each of the shelves 101 in the above-mentioned storage rack, one pallet P (see FIG. 5) is used.
Further, the stopper block 105 on the left side in FIG. 6 is locked by the stopper block 107 provided on each shelf 101 so that the pallet P does not move in a normal state. However, when vertical vibration such as an earthquake occurs, the stopper block 105 provided on the pallet P is replaced with the stopper block 107 provided on the shelf 101.
There is a risk of overcoming the pallet and dropping the pallet P on the ground.

It is an object of the present invention to provide a pallet drop prevention method and device for a storage shelf that prevents the pallet from falling even if vibration such as an earthquake occurs when the pallet is stored on each shelf. To provide.

[0007]

In order to achieve the above object, a pallet drop preventing method for a storage rack according to the present invention according to claim 1 is a pendulum provided with a weight provided on a frame constituting the storage rack when vibration occurs. Vibrates, and the roller member connected to the pendulum held between the pallet lock member and the stopper plate is released, and at the same time, the locking portion provided on the pallet lock member is provided on the pallet by the urging force of the ammunition machine. It is characterized by being engaged with the engaging portion.

According to a second aspect of the present invention, in the pallet fall prevention device for a storage rack, a pendulum provided with a weight is swingably provided on a frame forming the storage rack, and a roller member is connected to one end of the pendulum. This roller member is provided between the stopper plate provided on the frame and the pallet lock member urged by an ammunition so that it can be freely inserted and removed, and the pallet lock member can be attached to the pallet placed on the storage rack. It is characterized in that a locking portion to be inserted into the provided engaging portion is provided.

[0009]

With the above-described method and apparatus for preventing pallet drop in a storage rack according to the present invention as set forth in claims 1 and 2, the pendulum having a weight is always stopped at a predetermined position. The roller member connected to the pendulum is fitted between the stopper plate and the pallet lock member biased by the ammunition. In this state, the locking portion provided on the pallet locking member is separated from the engaging portion provided on the pallet.

When a vibration such as an earthquake occurs, the pendulum swings, and the roller member connected to the pendulum separates from the state held by the stopper plate and the pallet lock member. When the roller member is removed, the pallet lock member is pushed upward by the urging force of the ammunition machine, the locking part provided on the pallet lock member is inserted into the engaging part provided on the pallet, and the pallet stops moving and falls. Is prevented.

[0011]

Embodiments of the present invention will be described in detail below with reference to the drawings.

Referring to FIG. 4, a storage shelf 1 such as an automatic warehouse is provided with a frame 3 which is a frame, and the frame 3 has four side frames 5A, 5B, which are provided upright.
An upper frame 5E is connected to the upper surfaces of the side frames 5A to 5D and 5C and 5D. Moreover, the side frames 5A, 5B and the side frames 5C, 5D
A plurality of shelves 7 are provided between and in the vertical direction at appropriate intervals.

At the bottom, a loader frame 9 extending rightward in FIG. 4 is provided. A pallet P loaded with works W is stored on each of the shelves 7 and the loader frame 9. Since the structure of the pallet P is the same as that described above, the same parts are designated by the same reference numerals, and duplicate description will be omitted.

On the left side of the side frames 5A and 5B in FIG. 4, an elevator 11 which can move up and down is provided. A self-propelled traverser 15 having a hook 13 is provided on the elevator 11 so as to be movable in the left-right direction in FIG. Since the moving mechanism of the traverser 15 is already known, detailed description of the structure is omitted.

Sprockets 17 and 19 are rotatably provided on the upper and lower portions of the side frames 5A and 5B, respectively, and a chain 21 is wound around the sprocket 17 and the sprocket 19. Both ends of the chain 21 are attached to the rear portion of the elevator 11.

A drive motor 25 is provided on the upper frame 5E via a motor bracket 23, and a drive sprocket 27 is rotatably mounted on the output shaft of the drive motor 25. A chain 31 is wound around the drive sprocket 27 and the sprocket 29 mounted on the shaft of the sprocket 17.

When the drive motor 25 is driven by the above structure, the output shaft, the drive sprocket 27, and the chain 31.
The sprocket 29 is rotated via. The sprocket 17 is rotated by the rotation of the sprocket 29, and the elevator 11 attached to the chain 21 is vertically moved.

A vertically movable lifter 33 is provided below the loader frame 9 between the side frames 5A and 5B and the side frames 5C and 5D, and a lower portion of the loader frame 9 is moved in the left-right direction. A movable loader 35 is provided. The loader 35 is provided with a vertically movable suction frame 37, and the suction frame 37 is provided with a plurality of suction pads 39.

With the above structure, the hooks 109 of the pallets P stored on the shelves 7 and the loader frame 9 move up and down on the side surfaces of the side frames 5A and 5B.
When the traverser 15 provided on the traverse 1 is moved to the right in FIG. 4 and the elevator 11 is slightly raised, it engages with the hook 13 provided on the traverser 15. By moving the traverser 15 to the left, the pallets P loaded with the works W are transferred from the shelves 7 and the loader frame 9 onto the elevator 11.

After the elevator 11 is lowered and stopped at the lowermost position, the pallet P on the elevator 11 is transferred from the elevator 11 onto the lifter 33 by the movement of the traverser 15. The work W loaded on the pallet P transferred on the lifter 33.
Of the turret punch press or laser processing machine by lowering the suction frame 37 and adsorbing the suction pads 39 one by one from the top and moving the loader 35 to the right along the loader frame 9. It will be transported to the plate material processing machine.

The side frame 5 in the storage rack 1
Of the four side surfaces A to 5D, three surfaces on which the elevator 11 does not move vertically are covered with a cover or the like so that the pallet P does not go out. Open for.

The storage rack 1 is provided with a pallet drop prevention device 41 as shown in FIGS. The pallet drop prevention device 41 is provided for each of the shelves 7.

A hook 109 that engages with the hook 13 provided on the traverser 15 is formed on one side (right side in FIG. 1) of the pallet P, and details will be described later on the other side (left side in FIG. 1) of the pallet P. Pallet fall prevention device 4
An engaging portion 47 that engages with the engaging portion 45 provided on the pallet lock member 43, which is one member of the first component, is provided.

On the pallet P, a long stopper 49 for positioning the work W is erected on the right side in FIG.

The pallet fall prevention device 41 is a storage rack 1.
Is provided on the side frame 5C or 5D constituting the above, and the bearing 55 for supporting the bearing 53 is provided on the support plate 51 provided on the side frame 5C or 5D as shown in detail in FIG. A shaft 57 is mounted on the bearing 53, and the pendulum 5 is attached to the shaft 57.
A support rod 61, which is a member that constitutes 9, is integrally provided. A weight 63 is integrally provided at the upper end of the support rod 61, and the lower end is connected to a hawk link 67 via a pin 65. At the other end of the hawk link 67, a roller member 69 such as a bearing is provided as a shaft 71. Is installed through.

In the pallet lock member 43, a lock lever 77 is rotatably mounted on a support block 73 provided on the side frame 5C or 5D via a pin 75, and the locking portion is provided at the tip of the lock lever 77. 45 are provided. Then, an upper and lower rod 81 is attached to an appropriate position of the lock lever 77 via a pin 79. As shown in FIG. 85 is integrally provided with a fastening bolt 87, and one end of, for example, a tension coil spring is locked as a bullet 89 at both ends of the roller contact plate 85.

The other end of the bullet 89 is attached to the side frame 5
It is locked to a bracket 91 protruding from C or 5D, and a supporting member 95 for supporting a stopper plate 93 with which the roller member 69 abuts is provided in a hanging manner on the bracket 91.

With the above-mentioned structure, as a function thereof, in the normal state, the pallet fall prevention device 41 is stopped in the state shown by the solid line in FIG. That is, the pendulum 59 is in an upright state, and the roller member 6 connected to the pendulum 59 is
9 is fitted between the stopper plate 93 and the roller contact plate 85, and is pressed and fixed by the tensile force of the ammunition 89. Therefore, the locking portion 45 provided at the tip of the lock lever 77 is
Since the pallet P is located away from the engaging portion 47 provided on the pallet P, the pallet P can be freely moved from the shelves 7 in which it is housed.

However, when vertical and horizontal vibrations due to an earthquake or the like occur, the pendulum 59 swings around the bearing 53 as shown by the chain double-dashed line in FIG. When the pendulum 59 swings, the roller member 6 connected to the pendulum 59
9 is pulled out from the state where it is fixed by the stopper plate 93 and the roller contact plate 85. Therefore, the roller contact plate 85 is
Since it is always pulled by 9, the lock lever 77 moves upward, the lock lever 77 turns counterclockwise around the pin 75 as a fulcrum, and the locking portion 45 provided at the tip of the lock lever 77 is formed on the bottom surface of the pallet P. It is engaged with the engaging portion 47.

Thus, the pallet P becomes immovable from the shelves 7 in which it is housed, and it is possible to prevent the pallet from falling.

The present invention is not limited to the above-described embodiments, but can be implemented in other modes by making appropriate changes.

[0032]

As will be understood from the above description of the embodiments, according to the present invention according to claims 1 and 2, when vertical and horizontal vibrations due to an earthquake or the like occur, the pendulum swings and the stopper plate. Since the roller member fitted between the pallet lock member and the pallet lock member is released, the engaging portion provided on the pallet lock member is inserted and engaged with the engaging portion provided on the pallet. Therefore, the pallet can be prevented from falling from each shelf. Since the roller member is usually fitted between the stopper plate and the pallet lock member, the locking portion provided on the pallet lock member is separated from the engaging portion provided on the pallet. You can move freely from the shelf.

[Brief description of drawings]

FIG. 1 is a side view of a pallet fall prevention device showing a main part of the present invention.

FIG. 2 is an enlarged cross-sectional view taken along the line II-II in FIG.

FIG. 3 is an enlarged cross-sectional view taken along the line III-III in FIG.

FIG. 4 is a side view of a storage shelf of an embodiment for carrying out the present invention.

FIG. 5 is a plan view of a pallet stored in each shelf in a conventional storage shelf.

FIG. 6 is a side view of FIG.

FIG. 7 is an explanatory view of a conventional operation.

[Explanation of symbols]

 1 Storage Shelf 3 Frame 41 Pallet Drop Prevention Device 43 Pallet Lock Member 45 Engagement Part 47 Engagement Part 59 Pendulum 63 Weight Weight 69 Roller Member 89 Ammo 93 Stopper Plate P Pallet

Claims (2)

[Claims] 1. When vibration occurs, a pendulum provided with a weight provided on a frame constituting a storage shelf vibrates, and a roller member connected between the pendulum and held between a pallet lock member and a stopper plate is disengaged. At the same time, the locking portion provided on the pallet locking member is engaged with the engaging portion provided on the pallet by the urging force of the ammunition. 2. A pendulum provided with a weight is swingably provided on a frame constituting a storage rack, and a roller member is provided at one end of the pendulum, and the roller member is a stopper plate provided on the frame. The pallet lock member is provided so that it can be inserted into and removed from the pallet lock member urged by an ammunition machine, and the pallet lock member is provided with a locking portion to be inserted into an engaging portion provided in the pallet placed on the storage rack. A pallet drop prevention device for storage shelves.