JPH0958809A - Fence for preventing stored article from dropping down - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent articles stored in racks from dropping down in case of any earthquakes. SOLUTION: Rudder-like articles drop preventing fences 22 are supported between the rack pillar 16 and another rack pillar 16 of racks 12 slidably in vertical direction. Longitudinal bars 24 of the articles drop preventing fences 22 are placed on shear pins attached to supporting shafts erected on a floor surface so as to have the weight load of the articles drop preventing fences 22 supported by the shear pins. In each shear pins, an approximately V-letter shape groove is formed so as to be broken when any force more than a specified intensity is actuated in an earthquake. In normal cases, the lateral bars 26 of the articles drop preventing fences 22 are positioned on the front face sides of shelf boards 20. When any earthquake vibration acts on racks 12, shear pins 38 are broken so as to drop the articles drop preventing fences 22 on a floor surface 32, but since each lateral bar 26 is arranged in the intermediate position between each shelf board 20 and shelf board 20, any stored object placed on each pallet 18 is prevented from its drop.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stored article fall prevention fence for preventing a fall of luggage from a storage unit such as an automatic warehouse during an earthquake.

[0002]

2. Description of the Related Art As shown in FIG. 13, in a rack 100 of an automatic warehouse, in order to automatically store a stored item 102 by a stacker crane, as shown by an imaginary line (two-dot chain line) in FIG. Obstacles such as horizontal bars to prevent cargo falling in the opening 10
4 cannot be installed.

Conventionally, in order to prevent a load from falling, as shown in FIGS. 14 to 16, a convex portion 108 is provided on a shelf plate 106 and a concave portion 1 is formed on a pallet 110 on which a stored article 102 is placed.
12 is provided to prevent skidding of the pallet 110, and as shown in FIGS. 17 to 19, a projection 114 is provided at the end of the shelf board 106 (on the side of the crane passage) to prevent skidding of the pallet 110. .

[0004]

However, in such a method, it is necessary to secure the clearance in the height direction of the opening by the height of the convex portions 108 and 114. For this reason, the height of the protrusions 108 and 114 cannot be increased, and the anti-slip effect cannot be expected so much. Moreover, only the pallet 110 can be suppressed.

Further, when the convex portion 108 is provided on the shelf board 106 and the concave portion 112 is provided on the pallet 110, the stacker crane for handling luggage can be positioned with high accuracy in order to align the convex portion 108 with the concave portion 112. It had to be modified.

In view of the above facts, an object of the present invention is to provide a stored article fall prevention fence which has a simple structure and can surely prevent stored articles from falling during an earthquake.

[0007]

According to a first aspect of the present invention, there is provided a storage article fall prevention fence, comprising: a stopper member capable of preventing a storage article from falling through an opening of a storage section for storing a storage article; Supporting means for supporting the member at a retracted position retracted from the opening, and for moving the stopper member to a blocking position capable of blocking the fall of the stored object at the time of seismic vibration are provided.

Next, the operation of the stored object fall prevention fence according to claim 1 will be described. In the storage article fall prevention fence according to the first aspect, the stopper member is normally supported by the support means at the retracted position retracted from the opening of the rack. Therefore, the stored items can be freely taken in and out from the opening without interfering with the stopper member.

On the other hand, at the time of earthquake vibration, the supporting means moves the stopper member to the blocking position, and the stopper member prevents the stored items from falling.

When there are a plurality of openings, a plurality of stopper members may be connected to each other and the plurality of stopper members may be supported by one supporting means. This prevents a plurality of stored items from falling at the same time.

The stored items include not only luggage stored in a rack but also pallets for loading luggage.

According to a second aspect of the present invention, in the stored article fall prevention fence according to the first aspect, the supporting means normally supports the stopper member at the retracted position, and a force of a predetermined value or more is applied during earthquake vibration. It is characterized by comprising a shear pin that breaks when the above action occurs and drops the stopper member to the blocking position.

Next, the operation of the stored object fall prevention fence according to claim 2 will be described. In the stored article fall prevention fence according to the second aspect, the shear pin normally supports the stopper member, and the stopper member is in the retracted position.

On the other hand, when the stopper member rattles during an earthquake vibration and a force exceeding a predetermined value acts on the shear pin, the shear pin breaks. As a result, the stopper member falls to the blocking position and the fall of the stored items is blocked.

According to a third aspect of the present invention, in the storage article fall prevention fence according to the second aspect, the stopper is interposed between the support member to which the shear pin is attached and the support member and the stopper member. A fixing member that prevents rattling of the member, a drive unit that cancels the rattling prevention by the fixing member, a vibration detection sensor that detects seismic vibration, and a seismic vibration of a predetermined value or more is detected by the vibration detection sensor. In doing so, the drive means is driven, the control means for moving the fixing member in the rattling prevention release direction,
It is characterized by having.

Next, the operation of the storage article fall prevention fence according to claim 3 will be described. In the stored article fall prevention fence according to the third aspect, the fixing member is normally interposed between the support member and the stopper member to prevent the stopper member from rattling.

On the other hand, when the vibration detection sensor detects an earthquake vibration of a predetermined value or more, the control means drives the driving means to move the fixing member in the rattling prevention releasing direction. As a result, the stopper member rattles and a predetermined force or more acts on the shear pin to break the shear pin, and the stopper member falls to the blocking position to prevent the stored items from falling.

According to a fourth aspect of the present invention, in the storage article fall prevention fence according to any one of the first to third aspects, a plurality of the stopper members are provided, and the stopper positions of the respective stopper members are provided. Is characterized by changing the up and down direction.

Next, the operation of the stored object fall prevention fence according to claim 4 will be described. In the storage object fall prevention fence according to the fourth aspect, the plurality of stopper members move to the respective blocking positions during the earthquake vibration. Since the blocking position of each stopper member is different in the vertical direction, it is possible, for example, to make one stopper member correspond to a load and the other stopper member to correspond to a pallet for mounting a load,
It is possible to prevent falling of the pallet as well as falling of the luggage at the same time.

According to a fifth aspect of the present invention, in a stored article fall prevention fence, a stopper member capable of preventing the stored article from falling through an opening of a storage section for storing the stored article and the stopper member are retracted from the opening section. Guide means for movably supporting between a retracted position and a blocking position capable of blocking the fall of the stored items, and a stopper member supported at a retracted position retracted from the opening when locked, and the stopper is released by unlocking. Locking means for dropping the member to a blocking position capable of blocking the fall of the stored contents, a vibration detection sensor for detecting seismic vibration, and the lock when the seismic vibration of a predetermined value or more is detected by the vibration detection sensor. And a control means for releasing the lock of the means.

Next, the operation of the stored object fall prevention fence according to claim 5 will be described. In the stored article fall prevention fence according to the fifth aspect, the stopper member is normally supported at the retracted position retracted from the opening of the rack by the locking means. Therefore, the stored items can be freely taken in and out from the opening without interfering with the stopper member.

On the other hand, when the vibration detection sensor detects an earthquake vibration of a predetermined value or more, the control means releases the lock by the lock means. As a result, the stopper member falls to the blocking position to prevent the stored items from falling.

According to a sixth aspect of the present invention, the stored article fall prevention fence has a flexible structure capable of shielding the entire surface of the storage section for storing the stored article so as to prevent the stored article from falling. A shielding member and a moving unit that shields the entire surface of the opening by moving the shielding member retracted to a position where the opening is not shielded during earthquake vibration.

Next, the operation of the stored object fall prevention fence according to claim 6 will be described. In the stored article fall prevention fence according to the sixth aspect, the flexible shielding member is normally retracted to a position that does not shield the opening of the storage portion. Therefore, the stored item can be taken in and out through the opening without interfering with the shielding member.

On the other hand, at the time of earthquake vibration, the moving means moves the shielding member retracted to a position where the opening is not shielded, and the shielding member shields the entire surface of the opening. Therefore, even if the stored item is a small loose load, it can be reliably prevented from falling. Further, since the shielding member is flexible, it is possible to flexibly receive the stored item in the event of an earthquake, and it is possible to minimize damage to the stored item.

The invention described in claim 7 is the same as the invention in claim 6
In the stored article fall prevention fence described in (1), there is provided withdrawing means for returning the shielding member that shields the opening to the retracted position.

Next, the operation of the stored object fall prevention fence according to claim 7 will be described. In the stored article fall prevention fence according to the seventh aspect, at the time of restoration, the shielding member that shields the opening can be returned to the retracted position by the retracting means. When a plurality of storage units are provided, the shielding members can be pulled back at once by connecting the pulling-back means to each other.

[0028]

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment] A first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a plan view of the automated warehouse 10, and FIG. 2 is a front view of the automated warehouse 10 shown in FIG.

As shown in FIG. 1, the automated warehouse 10 is provided with a plurality of racks 12, and a stacker crane 14 is arranged between the racks 12.

As shown in FIG. 3, the rack 12 is provided with a plurality of rack pillars 16 which are erected at predetermined intervals, and between the rack pillars 16 a shelf board 20 on which a pallet 18 is mounted.
Are attached at predetermined intervals in the vertical direction. A storage space is provided between the shelves 20 and 20 so that the pallet 18 and the stored items 44 mounted on the pallet 18 can be horizontally taken in and out.

As shown in FIGS. 3 and 4, the rack post 16
A fence 22 is arranged between the rack pillar 16 and the rack pillar 16.

The fence 22 has a pair of vertical bars 24 arranged along the rack column 16 connected by horizontal bars 26 as stopper members arranged vertically at a predetermined interval, and has a ladder shape. There is. In this embodiment, the vertical bar 2
4 and the horizontal bar 26 are formed of a steel pipe, and the vertical bar 24 and the horizontal bar 26 are welded.

As shown in FIGS. 4 and 5, the rack post 16
A cylindrical bracket 28 is attached to the upper side of the. The vertical bar 24 of the fence 22 is inserted into the hole 30 of the bracket 28, and is supported slidably in the vertical direction.

As shown in FIGS. 4 and 5, a support shaft 34 as a support member is provided upright on the floor surface 32 below the vertical bar 24 coaxially with the vertical bar 24. The outer diameter of the support shaft 34 is smaller than the inner diameter of the vertical rod 24 by a predetermined dimension.

As shown in FIG. 6, the support shaft 34 has three through holes 36 penetrating in the width direction of the rack 12.
It is formed vertically with a predetermined interval. In this embodiment,
A metal shear pin 38 is inserted into the central through hole 36.

As shown in FIGS. 6 and 7, the support shaft 34
Is inserted into the vertical bar 24, and the bottom portion 42A of the rectangular notch 42 formed at the lower end of the vertical bar 24 is placed on the shear pin 38. Therefore, the fence 22 is supported by the shear pins 38 having a total load of two.

As shown in FIG. 6, the shear pin 38 includes
A substantially V-shaped groove 40 is formed in a portion protruding from the support shaft 34, and the shear pin 38 is formed when a force of a predetermined amount or more is applied.
Is designed to be broken at the groove 40 portion.

As shown in FIG. 7, the width W of the notch 42 is
The shear pin 38 is formed to have a predetermined size larger than the outer diameter D.

As shown in FIG. 4, the dimension H from the floor surface 32 at the lower end of the fence 22 supported by the shear pin 38 is the horizontal bar 2
The size is set to about 1/2 of the interval P of 6.

Next, the operation of the present embodiment will be described. Fence 2
2 is normally supported by shear pins 38 as shown in FIGS. 4 and 6, and the horizontal bar 26 is provided on the front side of the shelf plate 20 (the stacker crane 14 as shown in FIG. 4).
Side).

When seismic vibration acts on the rack 12, the fence 2
2 shakes and a predetermined force or more acts on the shear pin 38, so that the shear pin 38 breaks at the groove 40 portion. As a result, the fence 22 falls to the floor surface 32, the horizontal bar 26 is placed at an intermediate position between the shelves 20 as shown in FIG. 8, and the stored items 44 placed on the pallet 18 are placed horizontally. The rods 26 prevent the shelves 20 from falling.

Since the horizontal bars 26 are juxtaposed in the height direction in the fence 22 of this embodiment, all the front openings of the rack 12 in one vertical line can be simultaneously closed.

When the roll 44 rolls in the direction along the loading / unloading direction of the stored item 44 (the direction of the arrow FR in FIG. 8), the stored item 44 easily falls from the shelf board 20. In this case, the fence 22 swings in the direction along which the stored item 44 is taken in and out, and the side wall 24B of the notch 42 of the vertical bar 24 collides with the shear pin 38 to immediately rupture the shear pin 38 and prevent the stored item 44 from falling. To prevent.

In the present embodiment, the stored items 44 can be prevented from falling without power, so that the stored items 44 can be reliably prevented from falling even during a power failure or the like. Moreover, since the structure is simple, it can be easily applied to an existing automated warehouse.

In order to return the fence 22 to the original position, it may be lifted by using a jack or the like, and the shear pin 38 may be replaced after it is lifted to a predetermined position.

In the above embodiment, the horizontal bar 26 is dropped to an intermediate position between the shelves 20 in the event of an earthquake, but the lower end of the vertical bar 24 is shortened by a predetermined dimension and the shear pin 38 is attached. The position may be raised so that the falling position of the horizontal bar 26 is on the front side of the pallet 18 and the pallet 18 is prevented from protruding to prevent the stored items 44 from falling. In this case, the storage item 44 is preferably fixed to the pallet 18. [Second Embodiment] A second embodiment of the present invention will be described with reference to FIG. The same components as those in the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 9, a solenoid 50 as a driving means is attached to the upper part of the support shaft 34. The solenoid 50 includes a cylindrical electromagnetic coil 52 having a diameter smaller than that of the support shaft 34. The electromagnetic coil 52 includes:
A movable iron core 54 that moves in the vertical direction is inserted. An annular spacer 58 as a fixing member arranged between the upper portion of the support shaft 34 and the vertical bar 24 is attached to the movable iron core 54 by a U-shaped connecting fitting 56. Between the outer periphery of the spacer 58 and the inner periphery of the vertical rod 24, and between the inner periphery of the spacer 58 and the outer periphery of the support shaft 34, there are provided some gaps that allow the spacer 58 to slide.

The electromagnetic coil 52 is connected to a controller 60 as a control means, and when a voltage is applied from the controller 60, the movable iron core 54 is projected upward by a predetermined dimension.

An acceleration sensor 62 as a vibration detection sensor for detecting the vibration of the floor surface 32 is connected to the controller 60. When the acceleration of a predetermined value or more is detected, the controller 60 applies a voltage to the electromagnetic coil 52. Apply.

Next, the operation of the present embodiment will be described. In this embodiment, since the spacer 58 is normally disposed between the support shaft 34 and the vertical bar 24, the support shaft 34 and the vertical bar 24 do not make a large relative movement in the radial direction, and the shear pin 38 is hard to break.

When an acceleration of a predetermined value or more is detected due to an earthquake, the controller 60 applies a voltage to the electromagnetic coil 52, the movable iron core 54 moves upward, and the imaginary line (2) in FIG.
As shown by the broken line, the spacer 58 is the solenoid 50.
Move to a position facing. The support shaft 34 and the vertical bar 24 can relatively move in the radial direction, and a load exceeding the normal load acts on the shear pin 38, and the shear pin 38 is broken at the groove 40 portion. As a result, the fence 22 falls and the stored items 44 are prevented from falling.

In the present embodiment, it is possible to prevent the shear pin 38 from breaking at times other than an earthquake, such as when the fence 22 is hit by something, and it is possible to reliably prevent the stored items 44 from falling during an earthquake.

Although the acceleration sensor 62 is attached to the floor surface 32 in the present embodiment, the acceleration sensor 62 is mounted on the rack 1.
It may be attached to 2. In addition, when the acceleration sensor 62 is attached to the rack 12, it is preferable to attach the acceleration sensor 62 to a portion where the shake is greatest during an earthquake. A plurality of acceleration sensors 62 may be attached to the rack 12.
[Third Embodiment] A third embodiment of the present invention will be described with reference to FIGS. The same components as those in the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 10, in this embodiment, two fences 22 are arranged in a stack between the rack pillars 16 and the rack pillars 16 (not shown in FIG. 10).

The front side fence 22 (arrow F side) and the rear side (shelf 20 side) fence 22 have different lower end positions from the floor surface 32.
1, the horizontal bar 26 of the front side fence 22 and the horizontal bar 26 of the rear side fence 22 are displaced by a half pitch, and the horizontal bar 26 of the rear side fence 22 is arranged as shown in FIG. Is arranged at an intermediate position between the shelves 20 and the horizontal bar 26 of the fence 22 on the front side is arranged on the front side of the pallet 18.

Therefore, in the present embodiment, it is possible to prevent the stored items 44 and the pallets 18 from dropping during an earthquake.

In the above embodiment, an example in which the fence 22 is provided on the rack 12 of the automated warehouse 10 is shown.
It may be provided in a storage part of an ordinary warehouse, a storage part of a distribution center, a mechanical multi-storey parking lot, or the like, and it is needless to say that it can be provided in other than the above as long as the storage part is provided.

Further, in the above-described embodiment, the shear pin 38 is broken by the swing of the fence 22, but the shear pin 38 can be broken by other than the swing of the shelf 22. FIG. 20 shows an example of breaking the shear pin 38 using a metal ball.

As shown in FIG. 20, in this example, the portion of the shear pin 38 that is ahead of the groove 40 is set longer, and the tray 70 is fixed thereto.

A pipe 72 is vertically provided above the tray 70. The pipe 72 is attached to, for example, the vertical rod 24 (or the rack pillar 16).

Above the inside of the pipe 72, a small saucer 74, which is recessed in a substantially arcuate cross section, is arranged in the center. The small tray 74 is supported by one or two support rods 76 attached to the inner surface of the pipe 72. This small saucer 74
A metal ball 78 is mounted on. In addition, the small saucer 74
A gap is provided between the inner surface of the pipe 72 and the inner surface of the pipe 72 so that the metal ball 78 can fall.

In this embodiment, the seismic vibration is generated by the rack 12.
The metal ball 78 drops from the small saucer 74 and collides with the saucer 70 fixed to the shear pin 38. The shear pin 38 is broken by the force at the time of this collision, and the fence 22 falls on the floor surface 32 to prevent the stored items 44 from falling. The diameter of the small saucer 74, the radius of curvature of the recess, the diameter of the metal ball 78, the weight, the falling distance of the metal ball 78, and the like are determined in advance through experiments or the like.

In the above embodiment, the weight of the fence 22 is supported by the shear pin 38, and the shear pin 38 is broken to drop the shelf 22. However, for example, a movable iron core that horizontally moves in and out of the support shaft 34 is used. Attach the provided solenoid, and attach the shelf 22 to the tip of the movable iron core protruding from the solenoid.
May be supported. As described in the second embodiment, the solenoid is connected to the controller and the vibration detection sensor that detects the vibration of the floor surface. Then, when an acceleration of a predetermined value or more is detected by the earthquake, the movable iron core is pulled in and the shelf 22 is dropped. As a result, the shelf 22 can be reliably dropped during an earthquake.

[Fourth Embodiment] A fourth embodiment of the present invention will be described with reference to FIGS. Note that the same reference numerals are given to the same configurations as the above-described embodiment,
The description is omitted.

As shown in FIGS. 21 and 22, in the present embodiment, below the shelf plate 20 and the top plate 84 of the rack 12,
The sheet support plate 80 is horizontally arranged with a predetermined gap. The sheet support plate 80 is fixed to the lower surfaces of the shelf plate 20 and the top plate 84 via a spacer 86.

On the sheet support plate 80, a flexible sheet 82 is placed as a shielding member for preventing the stored items 44 from falling. As the flexible sheet 82, cloth, vinyl sheet (preferably containing reinforcing fibers) or the like can be used, but if the sheet is flexible and strong, Other than those described above can also be used.

In this embodiment, as shown by the solid line in FIG. 21, the horizontal bar 26 of the fence 22 in the initial state is located in front of the sheet support plate 80, the shear pin 38 is broken, and the fence 22 is broken.
The amount of movement of the fence falling on the floor surface 32 is such that the horizontal bar 26 is positioned in front of the pallet 18 as shown by an imaginary line.
Is determined to be equal to the dimension H from the floor surface 32 at the lower end of the.

The above-mentioned flexible sheet 82 has a rectangular shape, and the end on the crane passage side is fixed to the horizontal bar 26 of the fence 22.

On the crane passage side of the seat support plate 80, between the seat support plate 80 and the horizontal bar 26 of the fence 22,
A guide bar 87 supported by the rack pillar 16 is horizontally provided.

One end of a main wire 88 is connected to the end of the uppermost flexible sheet 82 opposite to the crane passage side. The main wire 88 is a guide bar 90 having a circular cross section supported by the rack pillar 16 on the inner side of the storage section.
And a weight 94 is attached to the lower end. In the present embodiment, the weight 94 floats from the floor surface 32, but it may be placed on the floor surface 32.

On the other hand, the flexible sheet 82 arranged below the uppermost flexible sheet 82 is connected to one end of a short wire 92 at the end portion on the inner side of the storage portion. The other end of the short wire 92 is hung downward through the guide bar 90, and the other end is connected to the main wire 90.
Is connected to the middle part of. The length of the short wire 92 hanging downward from the guide bar 90 is set to be a predetermined dimension longer than the drop dimension (dimension H) of the fence 22.

The main wire 88, the short wire 92 and the weight 94 constitute the pulling back means of the present invention. In addition, the fence 22, the support shaft 34, and the shear pin 3
The moving means of the present invention is constituted by 8.

Further, the main wire 88 and the short wire 92 may be connected to the central portion in the width direction of the flexible sheet 82 or may be connected to both end portions in the width direction.

Next, the operation of this embodiment will be described. When the fence 22 falls due to the earthquake, the flexible sheet 82 is attached to the horizontal bar 2.
6, the horizontal bar 26 is located in front of the pallet 18, and the flexible sheet 82 covers the entire crane passage side opening of the storage space as shown in FIG. In addition, the flexible sheet 8
In the state in which 2 covers the opening, the weight 94 applies a vertical tension to the flexible sheet 82. Therefore, even if the stored item 44 is small, bulky (like a large number of small boxes are stacked), or has a low height,
The fall on the side of the crane passage is reliably prevented.

Further, since the flexible sheet prevents the stored items 44 from falling, the stored items 44 can be flexibly received, and the damage to the load can be minimized.

The weight of the weight 94 applies a tension to the flexible sheet 82 covering the opening on the side of the crane passage so as to prevent the stored items 44 from falling, and further, when restoring, the jack 22 is used to remove the fence 22 from the fence 22. The weight is set such that the flexible sheet 82 can be pulled back onto the sheet supporting plate 80 when the flexible sheet 82 is returned to the height. Needless to say, the relationship between the weight of the weight 94 and the weight of the fence 22 should be balanced so that the fence 22 can surely break the shear pin 38 when an earthquake of a predetermined magnitude occurs.

As a result, when the dropped fence 22 is lifted to its original height with a jack or the like, the flexible sheet 82 in the vertical direction is formed.
Is pulled by the weight of the weight 94 and automatically returned to the seat support plate 80.

In this embodiment, tension is applied to the flexible sheet 82 by the weight 94. However, instead of the weight 94, one end of the spring is fixed to the lower end of the main wire 88, and the other spring is fixed. The end may be fixed to the floor surface 32 to apply tension.

Further, the weight 94 and the spring are not always necessary, and the main wire 88 may be pulled downward to return the flexible sheet 82 to the original position. As described above, when the weight 94 or the spring is not connected to the main wire 88, it is preferable to provide a stopper that limits the stroke of the main wire 88 so that the flexible sheet 82 covering the opening on the crane passage side does not loosen. . As a configuration for limiting the stroke of the main wire 88, for example, instead of the weight 94, the block is fixed to the lower end of the main wire 88, and the block is provided above the block at a position separated by the falling dimension (dimension H) of the fence 22. A stopper (a ring or the like fixed to the rack 12 and through which the main wire 88 is inserted) may be provided so as to come into contact with the stopper. Further, the lower end of the main wire 88 may be fixed to the floor surface 32, and the main wire 88 may be lengthened by the size (dimension H) of the fall of the fence 22.

In this embodiment, the flexible sheet 82 is normally stored on the sheet support plate 80. However, the flexible sheet 82 is stored in a tensioned state by the weight 94. If possible (for example, a highly rigid round bar or the like is fixed to the end of the flexible sheet 82 on the wire mounting side so as to pass in the sheet width direction, and both ends of the bar are connected to the main wire 88 or the short wire 92. The sheet support plate 80 and the spacer 86 may not be provided.

Further, in this embodiment, the flexible sheet 8 is used.
Although it was made to prevent the stored items 44 from falling by 2,
A flexible shielding member that can prevent falling of bulk goods can be used as a substitute for the flexible sheet 82, and a net may be used instead of the flexible sheet 82. If the net is used, the state of the stored item 44 can be easily confirmed from the outside.

Further, instead of the guide bar 87 of the rack pillar 16, a roll curtain having the same structure as that of the guide bar 87 is attached.
Even if the front end of the roll curtain is fixed to the horizontal bar 26 of the fence 22, the stored items 44 can be prevented from falling, as in the above embodiment.
Also, if the dropped fence 22 is lifted to its original height with a jack or the like, it can be automatically rewound.

The roll curtain referred to here is one used in general household windows or the like in which the curtain is wound around the outer circumference of the rotary shaft and can be automatically rewound by a spring. In this case, it goes without saying that the strength of the curtain material, the mainspring and the like are changed so as to prevent the stored items 44 from falling.

[0085]

Since the stored object fall prevention fence according to claim 1 is configured as described above, the stored object can be freely taken in and out during normal times, and the stored object can be dropped by the stopper member during earthquake vibration. It has an excellent effect that it can be surely blocked. In addition, since the stopper member is normally supported at a position retracted from the opening of the rack, the clearance between the load and the opening does not become small, and the opening can be used to the maximum extent. Further, since the structure is simple, it can be easily mounted on an existing rack.

Since the stored article fall prevention fence according to the second aspect has the above-mentioned configuration, it does not require power for preventing the stored article from falling. Therefore, it is possible to reliably prevent the contained items from falling even in the case of a power failure.

Since the storage article fall prevention fence according to the third aspect has the above-mentioned configuration, it is possible to prevent the shear pin from breaking at times other than an earthquake, and it is possible to reliably prevent the stored articles from falling during an earthquake.

Since the storage article fall prevention fence according to claim 4 is configured as described above, it is possible to prevent not only the fall of the luggage but also the fall of the pallet carrying the luggage at the same time in the event of an earthquake. .

Since the storage article fall prevention fence according to the fifth aspect has the above-mentioned configuration, it is possible to prevent not only the fall of the luggage but also the fall of the pallet carrying the luggage at the same time in the event of an earthquake. . In addition, since the seismic vibration is detected by the vibration detection sensor and actuated, it is possible to reliably prevent the contained items from falling during an earthquake, and to prevent the stopper member from dropping at times other than an earthquake.

Since the storage article fall prevention fence according to claim 6 has the above-mentioned structure, the storage article can be freely taken in and out during normal times, and the storage article can be surely dropped by the shielding member during an earthquake vibration. It has an excellent effect that it can be prevented. In particular, even if the stored item is a small loose load, it can be reliably prevented from falling. Moreover, since the shielding member is flexible,
The stored items can be flexibly received in the event of an earthquake, and damage to the stored items can be minimized. Furthermore, since the structure is simple, it can be easily attached to an existing rack.

Further, since the storage article fall prevention fence according to claim 7 has the above-mentioned structure, it is excellent in that the shielding member which shields the opening can be easily pulled back to the retracted position by the pulling back means at the time of restoration. Have the effect. In particular, when a plurality of storage units are provided, the shield members can be pulled back at once by connecting the pulling-back means to each other.

[Brief description of drawings]

FIG. 1 is a plan view of an automated warehouse.

FIG. 2 is a front view of an automated warehouse.

FIG. 3 is a perspective view of the rack according to the first embodiment of the present invention and showing a normal state.

FIG. 4 is a front view of the rack according to the first embodiment of the present invention and showing a normal state.

FIG. 5 is a perspective view of a bracket.

FIG. 6 is a side view of the periphery of the support shaft as viewed from the stacker crane side according to the first embodiment of the present invention.

FIG. 7 is a side view of the periphery of the support shaft as seen from the axial direction of the shear pin according to the first embodiment of the present invention.

FIG. 8 is a perspective view of the rack according to the first embodiment of the present invention, showing a state in which a stored object fall prevention fence has fallen.

FIG. 9 is a partial cross-sectional view around a support shaft according to the second embodiment of the present invention.

FIG. 10 is a perspective view of a stored object fall prevention fence in a normal state according to the third embodiment of the present invention.

FIG. 11 is a perspective view of a stored article fall prevention fence according to the third embodiment of the present invention.

FIG. 12 is a perspective view of the rack according to the third embodiment of the present invention, showing a state in which a stored object fall prevention fence has fallen.

FIG. 13 is a perspective view of a conventional rack without conventional earthquake countermeasures.

FIG. 14 is a perspective view of a rack provided with protrusions on a shelf plate.

FIG. 15 is a perspective view of a shelf board and a pallet of the rack shown in FIG.

16 is a side view of the rack shelf and pallet shown in FIG. 14. FIG.

FIG. 17 is a perspective view of a rack provided with a protrusion in front of a shelf board.

FIG. 18 is an enlarged view of the protrusion shown in FIG.

19 is a side view of the shelves and pallets shown in FIG.

FIG. 20 is a cross-sectional view of essential parts of a stored object fall prevention fence according to another embodiment of the present invention.

FIG. 21 is a side view of the rack at a normal time according to the fourth embodiment of the present invention.

FIG. 22 is a perspective view of the rack at a normal time according to the fourth embodiment of the present invention.

FIG. 23 is a perspective view of the rack according to the fourth embodiment of the present invention, showing a state in which the stored object fall prevention fence has fallen.

[Explanation of symbols]

 12 racks 22 fences (moving means) 26 horizontal bars (stopper members) 34 supporting shafts (supporting members) (moving means) 38 shear pins (moving means) 44 stored items 50 solenoids (driving means) 58 spacers (fixing members) 60 controllers ( Control means) 62 Acceleration sensor (vibration detection sensor) 82 Flexible sheet (shielding member) 90 Main wire (retracting means) 92 Short wire (retracting means) 94 Weight (retracting means)

Claims (7)

[Claims] 1. A stopper member capable of preventing a stored item from falling through an opening of a storage unit for storing the stored item, and a stopper member which is normally supported at a retracted position retracted from the opening, and during an earthquake vibration. A stored article fall prevention fence, comprising: a support means for moving the stopper member to a blocking position capable of blocking the fall of the stored article. 2. A shear pin that supports the stopper member at the retracted position during normal operation and breaks when a force greater than a predetermined value is applied during earthquake vibration to drop the stopper member to the blocking position. The stored object fall prevention fence according to claim 1, wherein the fence is provided. 3. A support member to which the shear pin is attached, and a support member interposed between the support member and the stopper member,
A fixing member for preventing rattling of the stopper member, a drive unit for canceling rattling prevention by the fixing member, a vibration detection sensor for detecting seismic vibration, and an earthquake vibration of a predetermined value or more by the vibration detection sensor. The stored article fall prevention fence according to claim 2, further comprising: a control unit that drives the drive unit to move the fixing member in the rattling prevention release direction when the detection is made. 4. The stored object dropping according to claim 1, wherein a plurality of the stopper members are provided, and the blocking position of each stopper member is changed in the vertical direction. Prevention fence. 5. A stopper member capable of preventing a stored item from falling through an opening of a storage unit for storing the stored item, a retracted position of the stopper member retracted from the opening, and a drop of the stored item. A guide means for movably supporting the lock position and the stopper member at the retracted position retracted from the opening when locked, and the lock member can prevent the stopper member from dropping the stored object by unlocking. Lock means for dropping to the blocking position; a vibration detection sensor for detecting seismic vibration; and control means for unlocking the lock means when seismic vibration of a predetermined value or more is detected by the vibration detection sensor, A fence for preventing the fall of stored items, which is characterized by being equipped. 6. A flexible shielding member capable of shielding the entire surface of the storage so as to prevent the storage from falling through the opening of the storage for storing the storage, and the opening at the time of earthquake vibration. A storage object fall prevention fence, comprising: a moving unit that moves the shielding member that is retracted to a position that does not shield the entire surface of the opening. 7. A retracting means for retracting the shielding member, which shields the opening, to the retracted position.
A fence to prevent stored items from falling.