JPH0682008U - Stacker crane safety fence - Google Patents

Abstract

(57) [Summary] [Purpose] In the safety fence for stacker cranes in automated warehouses, the conventional method involves the complicated work of hooking a chain at the entrance and exit of the fence and removing the chain when entering the fence. At times, a safety plug for stopping the crane drive was removable from the side of the fence,
The purpose is to eliminate the problem that it was an obstacle for workers when the plug was attached. [Structure] A door 2 is attached to a frame of a safety fence A for preventing a stacker crane S from entering a conveyance passage, an outlet 7 is arranged above the door 2, and a safety plug 6 can be attached and detached. When the safety plug 6 is pulled out, the stacker crane S stops driving.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a safety device for a safety fence of a stacker crane used in an automated warehouse.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, an automatic warehouse has been known in which a stacker crane is driven to run on a transport passage and luggage is carried in and out from a rack arranged in a plurality of rows and stages on the side of the transport passage. Since the stacker crane travels on the transfer passage at a high speed, it is very dangerous for the operator to enter the transfer passage. Therefore, a safety fence was installed around the transfer passage. In addition, in the case of entering the safety fence due to a crane malfunction or maintenance, a part of the safety fence is configured as an entrance / exit so that the ordinary chain cannot be used to enter and the chain can be removed when entry is necessary. The method of entering inside was adopted.

Further, a structure is known in which a safety plug is attachable to and detachable from a part of a frame of a safety fence, and the drive of a stacker crane is stopped when the safety plug is pulled out. The attachment / detachment position was in the lateral direction of the frame.

[0004]

[Problems to be solved by the device]

 In the structure of the conventional safety fence, it is complicated to attach and detach chains one by one to enter the safety fence, and the safety plug for stopping the drive of the stacker crane is not inserted when it is in the predetermined position. Since it protruded in the lateral direction, it obstructed the passage of workers, and there was a problem in work safety.

[0005]

[Means for solving the problem]

 The present invention uses the following means in order to solve the above problems. That is, in a safety fence that prevents the stacker crane from entering the transport passage in an automated warehouse, a door is provided in front of the frame of the safety fence, a safety plug is detachably arranged above the door, and the safety plug is pulled out. It is configured to stop the driving of the stacker crane.

[0006]

[Action]

 A door is attached to the safety fence for easy access, and a safety plug that pulls out when the fence enters the fence to stop driving the crane is removable at the top of the door. Even when the plug does not protrude laterally, the plug can be easily attached and detached when opening and closing the door, and it cannot be opened unless the plug is removed, thus improving safety.

[0007]

【Example】

 An embodiment of the configuration of the present invention will be described with reference to the accompanying drawings. Fig. 1 is an overall perspective view of the automated warehouse with the safety fence of the present invention installed, Fig. 2 is a front view of the safety fence of the present invention, Fig. 3 is the same plan view, Fig. 4 is the same side view, and Fig. 5 is safety. FIG. 6 is a plan view of the front portion of the fence, FIG. 6 is a partial side sectional view showing the structure of the safety plug, and FIG. 7 is a partial side sectional view of the same when the plug is pulled out and the door is opened.

The overall configuration of the automated warehouse will be described with reference to FIG. A plurality of rows and a plurality of stages of racks R are arranged on both sides of the traveling path L of the stacker crane S to form a warehouse part. The stacker crane S is equipped with a slide fork 10, and is configured to carry a load P and move vertically and horizontally between the front mast 11F and the rear mast 11R. Is configured to travel on the traveling path L, store the load P in a desired rack R, or take out the load P from the rack R. Further, in the stacker crane S, a control board 12 is arranged at the base of the front mast 11F.

The starting end of the traveling path L is configured as a station at which the stacker crane S is at a position for loading or unloading the luggage P from the loading / unloading pedestals 13/13. Has been done. A safety fence A is installed around the front of the stacker crane S at the station position, and an operation panel C for stacker crane operation is fixed at a predetermined position outside the safety fence A. There is. The stacker crane can be operated by operating the operation panel C or a host computer, and the stacker crane S can be operated by an operator, and the control panel 12 can also be operated manually. .

Next, the structure of the safety fence A will be described. First, in the lower part of the safety fence A, as shown in a plan view of FIG. 3, the pedestal 1 has the operation panel pedestal 1a for mounting the operation panel C on the front right side, and the step 1b for entering and exiting the fence on the front left side. And side pedestals 1c and 1c are arranged on both sides. Wiring is provided between the control panel S or the stacker crane S main body and the operation panel C, and the pedestal 1 is utilized as a wiring duct for arranging the wiring H as shown in FIG. That is, the inside of each pedestal is formed into a cylindrical shape, and the wiring H is passed from the control panel C or the stacker crane S into the pedestals 1c and 1c on both sides, the step 1b, and the operation panel pedestal 1a. As will be described later, it is also connected to an operation panel C standing on the operation panel pedestal 1a and a safety plug 6 of the present invention described later.

On the pedestal portion 1 configured as described above, on the side pedestals on both sides, the wire nets 4 and 4 forming a fence are fixed, and the wire nets 4 and 4 are rearward from the rear end portion. As shown in FIG. 4, rear covers 5 and 5 are provided on the rear side of the vehicle. The rear cover 5, 5 fills a gap between the rear end of the wire mesh 4, 4 and the starting end of the warehouse, and the rear cover 5, 5 having a front-rear length corresponding to the width of the gap is attached. By doing so, the rear side of the wire nets 4 and 4 is covered.

As shown in FIGS. 2 and 5, on the front surface of the safety fence A, above the step 1b, it is possible to enter the traveling path L for the inspection of the control panel 12 and the repair of the crane. A door 2 is provided. Conventionally, there is no structure of a door integrally attached to the safety fence, and as a measure to prevent entry into the safety fence, a chain is laid horizontally on the entrance path of the safety fence, and when a worker enters, Although the chain was removed and entered, it was complicated to hang the chain, but the safety fence A of the present invention has a door integrally attached to facilitate entry into the traveling path L. ing.

However, it is very dangerous if the drive of the stacker crane is not stopped when entering the safety fence A. Therefore, as shown in FIG. 5 to FIG. 7, the outlet mounting plate 9a is projected from the left vertical frame 9 to fix the outlet 7, and the plug hole 2a for inserting the safety plug 6 is formed in the upper portion of the door 2. When the door is closed, the door 2 and the outlet mounting plate 9a are fitted together as shown in FIG. 6, and the safety plug 6 can be inserted into the outlet 7 through the plug hole 2a. Further, when the safety plug 6 is pulled out from the receptacle 7, the driving of the stacker crane S is stopped.

That is, when the worker enters the inside of the safety fence A, the door 2 cannot be opened unless the safety plug 6 is pulled out, as shown in FIG. Since the stacker crane S cannot be operated because it is no longer supplied, it is possible to work safely, and when the work is finished and the door 2 goes outside, if the safety plug 6 is inserted again into the receptacle 7, The stacker crane can be driven. Further, when the door 2 is closed and the safety plug 6 is inserted, it also serves as a lock member for the door 2, as shown in FIG. The safety plug 6 is provided with a handle 6a which serves as a handle for attachment / detachment.

The door 2 is hinged to a front plate 3 fixed to a vertical frame 9 in the front part of the right side wire net 4, and the operation panel pedestal 1 a is projected forward at the bottom of the front plate 3. Bolt holes 1d, 1d ... Are drilled in the operation panel base 1a, and the operation panel C is integrally fixed in front of the safety fence A. A work completion switch 8.8 is provided in front of the wire nets 4 and, when the load is completely placed on the loading / unloading table 13, the slide fork 10 of the stacker crane S is pushed when the switch is pushed. The baggage is taken in by driving the protrusion.

[0016]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects. That is, the door is integrally attached to the safety fence, making it easy to enter and exit the fence, and the safety plug for stopping the drive of the stacker crane can be attached to and detached from the top of the door. Therefore, the plug can be easily attached / detached when the door is opened / closed. Further, even when the plug is inserted, the plug does not project in the lateral direction. The safety is improved.

[Brief description of drawings]

FIG. 1 is an overall perspective view of an automated warehouse with a safety fence of the present invention installed.

FIG. 2 is a front view of the safety fence of the present invention.

FIG. 3 is a plan view of the same.

FIG. 4 is a side view of the same.

FIG. 5 is a plan view of a front portion of the safety fence.

FIG. 6 is a partial side sectional view showing the configurations of a safety plug and an outlet.

FIG. 7 is a partial side sectional view of the same when the plug is pulled out and the door is opened.

[Explanation of symbols]

 A Safety fence C Control panel L Running path S Stacker crane 2 Door 2a Plug hole 3 Front plate 6 Safety plug 7 Outlet 9 Vertical frame 9a Outlet mounting plate

Claims (1)

[Scope of utility model registration request] 1. A safety fence for preventing a stacker crane from entering a transportation passage in an automated warehouse, wherein a door is provided in front of a frame of the safety fence, and a safety plug is detachably arranged above the door. A safety fence for stacker cranes, which is configured to stop driving the stacker crane when the stacker is pulled out.