JP2800902B2 - Article storage facility - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a storage shelf provided with a pair of left and right receiving portions for supporting both edges of a pallet for loading articles, and a fork which can be moved up and down and up and down. The present invention relates to an article storage facility provided with transport means for transporting a pallet and control means for controlling the operation of the transport means.

[0002]

2. Description of the Related Art When unloading a pallet from an article storage facility as described above, it is necessary to determine a vertical position suitable for projecting a fork. Conventionally, the elevation position is determined by detecting a detection object attached to the receiving portion, the elevation guide, or the like.

[0003]

In the above prior art, the vertical position with respect to a specific storage shelf is a fixed position. In other words, the fork is projected from the same position regardless of whether the pallet is bent or not. Therefore, when the deflection of the pallet is large, the fork may come into contact with the pallet. SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional drawbacks and to provide an article storage facility excellent in safety by eliminating the possibility of the fork and pallet coming into contact with each other.

[0004]

In order to achieve this object, a feature of the article storage facility according to the present invention is that the pallet is detected at the intermediate position between the pair of receiving portions by the fork or a member which moves up and down integrally with the fork. Detecting means is provided, and when the pallet is unloaded, the control means is configured to determine an elevating position for projecting the fork based on detection information of the detecting means. .

[0005]

Since the pallet is detected at the intermediate position of the receiving portion, it is possible to determine the vertical position corresponding to the magnitude of the deflection of the pallet. Therefore, regardless of the magnitude of the deflection of the pallet, there is no possibility that the fork contacts the pallet.

[0006]

According to the present invention, regardless of the size of the pallet deflection,
Since the fork and the pallet can be prevented from coming into contact with each other, it is possible to obtain an article storage facility excellent in safety.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a multistory parking lot will be described below with reference to the drawings. As shown in FIGS. 3 and 4, a rack 1 for storing a car, an elevator 3 as a transporting means for transferring the car stored in the rack 1 to an entrance / exit port 2, and management for managing the entry / exit of the car The apparatus K is provided, and thus a multi-story parking lot is configured.

The rack 1 is provided with a plurality of storage shelves 4 in upper and lower tiers, and is arranged side by side with a predetermined space S therebetween. An elevator 3 is provided in the space S. The storage shelf 4 is provided with a pair of left and right receiving portions 4A for mounting and supporting both edges of the pallet 7 for mounting on a vehicle.

The elevator structure of the elevator 3 will be described in further detail. As shown in FIG. 5A, a structure in which the right and left ends of the elevator 3 are lifted and suspended by a cable-like body 6 driven by the elevator driving device 5. Has become. As shown in FIG. 5 (B), the elevator drive device 5 includes a pulley 5A that drives the rope 6 around the wire, and a drive shaft 5B of the pulley 5A,
A driving motor 5D interlockingly connected via C is provided with a braking device 5E for braking the motor 5D.

The elevator 3 comprises an elevator 3 and a storage shelf 4
And a fork device F for transferring the pallet 7 to the pallet 7. The fork device F will be further described. As shown in FIGS.
It has. Each of the forks 8 includes a base frame 8A fixed to the elevator body and a base frame 8A.
A, an intermediate frame 8B that expands and contracts in both front and rear directions with respect to A, and a tip frame 8C that expands and contracts further with respect to the intermediate frame 8B
And a chain 8D for transmitting a driving force for extending and contracting the intermediate frame 8B and the front end frame 8C, and a drive motor 8E thereof.

The base frame 8A has a pair of left and right members 8a fixed to the elevator 3 in a separated state so as to form a space for disposing the chain 8D and the like, and extends in the longitudinal direction of the inner surface of each member 8a. Has a recessed guide groove 8b. The intermediate frame 8B is provided with a loop 8c which engages with the guide groove 8b at a lower portion thereof, and can slide in the front-rear direction with respect to the base frame 8A. Further, a ring body 8e that engages with a guide groove 8b of a tip frame 8c described below is attached. The end frame 8C has a guide groove 8d for engaging the ring 8e in the longitudinal direction of the inner surface. Thus, the intermediate body 8B can be slid in the front-rear direction by the interposition of the ring body 8e.

The three frame members 8A, 8B, 8C
In a state where the fork 8 is linked with the chain 8D, the driving sprocket 8h is appropriately rotated by using the motor 8E, so that the fork 8 is in the retreated state shown in FIG. 9A and the protrusion shown in FIG. State.

The fork 8 is configured to be able to move up and down and up and down so that the pallet 7 can be moved between the elevator 3 and the storage shelf 4.
Can be transferred.

Each pallet 7 has, as shown in FIG.
At a middle position between the pair of receiving portions 4A, a light shielding body 7A protruding toward the space S is provided. Further, optical sensors 11 each including a light projecting unit 11A and a light receiving unit 11B are provided at both ends in the longitudinal direction of the inner surface of the end frame 8C. That is, when the elevator 3 is moving up and down the space S, the pallet 7 can be detected by passing the light blocking member 7A between the light projecting portion 11A and the light receiving portion 11B to block the light. That is, the optical sensor 11 corresponds to a detecting unit. In addition, the proximity sensor 12 which detects the receiving part 4A is provided in the elevator main body.

A slewing device 9 for slewing the pallet 7 is provided below the space S. In addition, as shown in FIG. 11, a lifter 10 for raising and lowering the pallet 7 and a turn table 9a for rotating the pallet 7 are provided. That is, at the time of loading, as shown in FIG. 11A, when the elevator 3 is lowered to the lowermost position of the space S with the lifter 10 raised, the pallet 7 separates from the fork device F and lifter 1
It is in a state of being carried at 0, and waits for the vehicle to enter. As shown in FIG. 11B, when the car gets on the pallet 7, the lifter 10 descends and the pallet 7
and is turned 90 degrees (see FIG. 11C).
In addition, the vehicle is similarly turned 90 degrees at the time of unloading. Therefore, it is possible to perform both entry and exit while the vehicle is moving forward.

As shown in FIG. 1, the control unit H which designates the storage shelves 4 to be moved in and out and operates the elevator 3 and the turning device 9 based on the input information of the management device K and the sensors. Is provided. That is, the control unit 100 is configured using the control unit H.

The operation of the control section H when leaving the car will be briefly described. As shown in FIG.
Based on the detection information, the designated storage shelf 4 is detected, and the elevating position for protruding the fork 8 is determined. That is, as shown in FIG. 6, the elevator 3 is stopped a predetermined distance below the position where the pallet 7 is detected. Next, as shown in FIG. 7, the fork 8 is made to protrude, and the elevator 3 is raised until the proximity sensor 12 detects the receiving portion 4A. Then, the fork 8 is retired. So,
The designated car can be mounted on the elevator 3.
The pallet 7 is carried on the turntable 9a by descending to the entrance / exit port 2, and the turntable 9a is turned. You can leave the car. When the vehicle is to be stored, the designated storage shelf 4 is detected based on the detection information of the proximity sensor 12.

[Alternative Embodiment] In the above-described embodiment, the case where the racks 1 provided with the storage shelves 4 in a plurality of upper and lower stages are provided in two rows in the front and rear is shown. May be. In the above-described embodiment, the case where the present invention is applied to a multi-story parking lot is shown, but the present invention can also be applied to various forms of automatic warehouses and the like. In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a block diagram of a control configuration.

FIG. 2 is a flowchart of a control operation;

FIG. 3 is a front view of the entire structure.

FIG. 4 is a side view of the entire structure.

FIG. 5 is an explanatory view of an elevator elevating structure.

FIG. 6 is a side view of the fork device.

FIG. 7 is a side view of a fork device.

FIG. 8 is a sectional view of a main part of a fork device.

FIG. 9 is an explanatory view of a moving structure of a fork device.

FIG. 10 is a plan view showing an optical sensor mounting structure.

FIG. 11 is a side view of the turning device.

[Explanation of symbols]

 Reference Signs List 4 storage shelf 7 pallet 8 fork 11 detecting means 100 control means 4A receiving section F fork

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E04H 6/22

Claims (1)

(57) [Claims] A storage shelf (4) provided with a pair of left and right receiving portions (4A) for supporting and supporting both edge portions of a pallet (7) for loading articles, and a fork that can move up and down and up and down. A transport unit (F) for transporting a pallet provided with (8), and a control unit (100) for controlling the operation of the transport unit (F)
Detecting means (11) for detecting the pallet (7) at an intermediate position between the pair of receiving portions (4A) on the fork (8) or a member that moves up and down integrally with the fork (8). And the control means (10
Item 0) is an article storage configured to determine a vertical position for projecting the fork (8) based on the detection information of the detection means (11) when the pallet (7) is unloaded. Facility.