JP2001019115A - Stacker crane - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce an interval between vertical frames as well as to reduce an interval between carrying engines by arranging a traveling rail and a driving wheel deviating to one side of the lengthwise directional center line of a cargo bed frame. SOLUTION: A traveling rail 13 and a driving wheel 14 provided in a lower frame 2 are arranged so as to deviate to one side of the lengthwise directional center line 16 of a cargo bed frame 14, and a travel driving device 15 is arranged in a position noninterfering with the cargo bed frame 4 between the cargo bed frame 4. Thus, even if the cargo bed frame 4 descends and reaches the lowest position, a space for arranging the travel driving device 15 can be arranged in a noninterfering position of the travel driving device 15 and the lower end of the cargo bed frame 4, and since only a lifting driving device is installed between vertical frames 3, an interval between the vertical frames 3 can be reduced, and an interval between carrying engines can also be reduced. Thus, a wheel interval can be expanded to improve traveling stability of a crane.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stacker crane provided with a plurality of transfer devices for traveling along a shelf and loading / unloading a predetermined shelf.

[0002]

2. Description of the Related Art A conventional stacker crane will be described with reference to the drawings. As shown in FIG. 4, the stacker crane is provided so as to be movable along a pair of upper and lower rails 13, and storage shelves are installed on both sides of the rail 13. These storage shelves are composed of a plurality of pillar members vertically arranged in a vertical direction, a plurality of shelf members arranged in a horizontal direction, and the like, and a structure in which a plurality of article storage units are arranged in a vertical direction and a horizontal direction. It has become.

On the other hand, a stacker crane reciprocates between an article loading / unloading section to / from an article storage shelf and an article storage section of each article storage shelf to convey articles, and can be moved up and down. An extensible fork 4a as a transfer device for transferring articles to a carry-in / out section and each article storage section.
Is provided.

Further, a drive control device for the crane comprising a traveling motor, a speed reducer, a control panel and the like is provided in front of the vertical frame 3 in the traveling direction, or is provided between the vertical frames together with a lifting drive. Is provided.

[0005]

In the above-mentioned conventional stacker crane, the traveling drive device for driving the crane is provided in front of the vertical frame, or is provided between the vertical frames together with the elevation drive device. Therefore, in the former, the stacker crane protrudes significantly outward by the length of the traveling drive device from the shelf post at the shelf end, so that the projecting portion becomes dead space and cannot be used as a shelf, Also, in the latter, since the lifting drive device and the traveling drive device are provided between the vertical frames, the interval between the vertical frames becomes large, and the interval between the transporters becomes larger than the pitch between the shelves. I was

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and comprises a vertical frame vertically erected between an upper frame and a lower frame in the traveling direction of the crane along the front and rear surfaces in the traveling direction of the crane. In a stacker crane equipped with a loading frame that has a lifting machine that moves up and down, a lifting drive that lifts and lowers the loading frame, and a crane traveling drive that drives the crane along the traveling rail, the traveling rail and the lower frame The driving wheel provided is provided at a position deviated to one side from the center line in the length direction of the loading frame, and the traveling drive device is provided below the loading frame at a position that does not interfere with the loading frame. is there.

According to the present invention, the traveling rail and the drive wheels are provided so as to be deviated to one side from the center line in the longitudinal direction of the carrier frame. It is possible to provide a space for installing the traveling drive device at a position where the drive device and the lower end of the carrier frame do not interfere, and only the lifting drive device can be installed between the vertical frames, so the interval between the vertical frames is reduced. As a result, the interval between the transporters can be reduced.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is directed to vertically moving a vertical frame between an upper frame and a lower frame in the crane traveling direction along the front and rear surfaces thereof in the crane traveling direction. In a stacker crane equipped with a carrier frame having a lifting and lowering machine, a lifting drive for lifting and lowering the carrier frame, and a crane traveling drive for driving the crane along the traveling rail, a traveling rail,
The driving wheel provided on the lower frame is provided at a position deviated to one side from the center line in the length direction of the loading frame, and the traveling drive device is provided below the loading frame at a position that does not interfere with the loading frame. By providing the traveling rail and the driving wheels so as to be deviated to one side from the center line in the longitudinal direction of the carrier frame, even if the carrier frame descends and reaches the lowest position, the traveling drive device and the carrier It is possible to provide a space for installing the traveling drive device at a position where the lower end of the frame does not interfere, and since only the elevation drive device can be installed between the vertical frames, the interval between the vertical frames can be reduced, and This has the effect of reducing the distance between them.

An embodiment of the present invention will be described below with reference to the drawings. (Embodiment 1) FIGS. 1 to 3 show an embodiment of a two-mast type according to the present invention.
Is a lower frame, 3 is a vertical frame standing up and down between the upper and lower frames in the crane traveling direction, 4 is a loading frame suspended (mounted) along the front and rear of the vertical frame 3 in the crane direction, and 4a is a loading frame. An extendable fork which is a transfer device mounted on 4, a chain for extending the carrier frame 4 so as to be able to move up and down, 5 a is a no-load chain, 6 is a pulley for guiding the chain 5, and 7 is a carrier frame 4. A guide frame provided on the side of the vertical frame 3; 8 is a guide roller running along the guide frame; 8a is a guide roller mounted on the guide frame and running along the vertical frame 3; A drive sprocket for lowering and lowering, 10 is a speed reducer for the drive sprocket, and 11 is a hoist motor, which is for the drive sprocket 9 and the drive sprocket. 10, winding motor 11 is provided between the vertical frame 3,3. 12 is a stopper provided at the front and rear ends of the crane, 13 is a traveling rail, 14 is a driving wheel, and 15 is a traveling driving device. The traveling rail 13 and the driving wheels 14 are provided at positions deviated to one side from the center line 16 of the carrier frame 4, and the traveling drive device 15 is provided between the carrier frames 4 at a position that does not interfere with the carrier frame 4.

The operation according to the embodiment of the present invention will be described. Vertical frames 3, 3 are erected between the upper frame 1 and the lower frame 2 in front and rear of the crane traveling direction.
The carrier frame 4 provided with “a” is mounted so as to be able to move up and down along the vertical frames 3, 3 via a chain 5 by a lifting drive device including a driving sprocket 9, a driving sprocket speed reducer 10, and a hoisting motor 11. The crane is driven by a crane traveling drive device 15 that drives the crane along the traveling rail 13.

In the present invention, as shown in FIG. 3, the traveling rail 13 and the drive wheels 14 mounted on the lower frame 2 are biased to one side of the center line 16 in the longitudinal direction of the carrier frame 4. The traveling drive device 15 is provided between the carrier frames 4 at a position that does not interfere with the carrier frames 4. That is, by providing the traveling rail 13 and the driving wheels 14 so as to be deviated to one side from the center line 16 in the longitudinal direction of the carrier frame 4, even when the carrier frame 4 descends and reaches the lowest position, the traveling drive device is provided. It is possible to provide a space for installing the traveling drive unit 15 at a position where the lower end 15 and the lower end of the loading frame 4 do not interfere with each other. Since only the elevation drive units 9 to 11 are installed between the vertical frames 3, the vertical frame 3 The distance between them can be reduced, and the distance between transporters can also be reduced.

[0012]

According to the present invention, the traveling rail and the driving wheels are provided so as to be deviated to one side from the center line in the longitudinal direction of the carrier frame, so that the carrier frame descends and reaches the lowest position. It is possible to provide a space for installing the traveling drive device at a position where the traveling drive device and the lower end of the carrier frame do not interfere with each other, and only the lifting drive device can be installed between the vertical frames, so that the interval between the vertical frames is reduced. Small,
The distance between the transporters can be reduced, and the drive wheels can be provided below the transporter of the carrier, so that the axle distance can be increased and the traveling stability of the crane can be improved. Having.

[Brief description of the drawings]

FIG. 1 is a front view of a stacker crane according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is an enlarged view of a main part of FIG. 1;

FIG. 4 is a schematic view of a conventional stacker crane.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper frame 2 Lower frame 2a Support stand 3 Vertical frame 4 Loading frame 4a Fork 5 Chain 5a No-load chain 6 Pulley 6a Pulley 7 Guide frame 8 Guide roller 8a Guide roller 9 Drive sprocket 10 Reduction gear for drive sprocket 11 Hoisting motor 12 Stopper DESCRIPTION OF SYMBOLS 13 Travel rail 14 Drive wheel 15 Travel drive 16 Center line 17 Control panel 18 Guide rail

Claims (1)

[Claims] 1. A loading frame provided with a lifting and lowering machine that moves up and down along a front and a rear surface in a crane traveling direction of a vertical frame erected in the crane traveling direction between an upper frame and a lower frame. In a stacker crane provided with an elevating drive device that moves up and down and a crane traveling drive device that drives the crane along the traveling rail, the traveling rail and the drive wheel provided on the lower frame are moved from the center line in the length direction of the loading frame to one side. A stacker crane, wherein the traveling drive device is provided at a position which is not deviated from the carrier frame and does not interfere with the carrier frame below the carrier frame.