JPH06286809A - Operator's cabin fall prevention device for stacker crane - Google Patents

Abstract

PURPOSE:To aim at improving safety by making an operator's cabin of a simple construction and also surely presentable from falling. CONSTITUTION:A hoisting accessory 6 is provided protrudently on an elevating mast 5, provided in a freely elevating manner on a guide frame 4 provided vertically on the crab of a stacker crane, and supports an operator's cabin 7 in a freely sliding manner on the elevating mast 5. Furthermore, the hoisting accessory 6 has engagingly locked thereon a main rope 11, which suspends a suspended load together with the operator's cabin load, and the operator's cabin has engagingly locked thereon, besides the main rope 11, an operator's cabin suspending rope 12, and both ropes 11, 12 are wound on the same winding drum. Thus the device can be prevented from being made in a large size and safety can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driver's cab drop prevention device for a stacker crane, which has a simple structure to prevent the driver's cab from dropping even when the main rope is cut and to improve safety. .

[0002]

2. Description of the Related Art In a conventional stacker crane, a guide is fixedly hung vertically on the club side, and a mast which is guided by the guide to move up and down is provided. Each section is equipped with a driver's cab, and the main rope is used to simultaneously move up and down the lifting gear and the driver's cab to perform the required lifting work. And as a safety measure, when the main rope is cut, it is equipped with a device that detects the hanging load amount and the load of the entire cab and prevents the drop.

[0003]

Therefore, since the elevating mast having a driver's cab and lifting equipment is guided by the main rope to ascend and descend, the fall detection load when the main rope is cut is This is the total of the lifting equipment (suspended load), and as a result, the rope for catching for the fall prevention device also has the same diameter as the main rope, and there is the drawback that the overall size of the device increases.

It is an object of the present invention to have a simple structure and to surely prevent the driver's cab from falling to improve safety.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, in which a hoisting tool is projected from an elevating mast which is vertically movable on a guide frame vertically installed on a club of a stacker crane. In addition, the operator's cab is slidably supported by this lifting mast, and the main rope that suspends both the suspended load and the operator's cab load is suspended in the suspension tool. The main point is that both ropes are stopped and wound on the same winding drum.

[0006]

[Operation] A lifting tool is integrally provided on a lifting mast that is guided by the club side guide and lifts, and this lifting tool is suspended and supported by the main rope together with the lifting mast. Also, it is supported so that it can be locked at a fixed position, and this operator's cab is hung with a rope for suspending the operator's cab, which is different from the main rope. And try to wind it up. As a result, both the suspended load and the load in the operator's cab are suspended and supported by the main rope during hanging work, and when the main rope is cut, only the operator's cab is suspended and supported by this dedicated rope, so it is prevented from falling. In addition, the rope for safety measures only needs to support the cab load, which can prevent the device from increasing in size and improve safety.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A fall prevention device for a driver's cab in a stacker crane of the present invention will be described below with reference to the illustrated embodiment. In the figure, 1 is a beam of a stacker crane, which is provided so that it can travel along a rail and
Is provided with a traversing club 2, and a hoisting drum device 3 is installed on the club 2.

A guide frame 4 is fixedly hung on the lower surface of the club 2, and a winding drum device 3 and a traverse driving device, each of which is composed of a winding drum 31 and a driving device 32 for driving the winding drum 31, are provided on an upper portion of the club 2. At the same time, the guide frame 4 is provided with an elevating mast 5 which is guided and raised and lowered. The elevating mast 5 can be telescopically moved with respect to the guide frame 4 by a telescopic method or any other method.

A required suspending tool 6, for example a fork as shown in the drawing, is provided on one side of the lower end of the lifting mast 5 so that a desired load can be suspended by the suspending tool 6 and the suspending tool 6 can be used. A cab 7 is provided on the opposite side of the tool 6.

The hanger 6 is formed integrally with the lifting mast 5, but the operator's cab 7 has a lifting mast 5 as shown in detail in FIGS.
It is guided by guide rails 8, 8 arranged along the longitudinal direction on the side surface of and is supported so as to be able to move up and down. This is a guide device 9, 9 consisting of a plurality of guide wheels provided on the cab side.
The guide support rails are slidable in the vertical direction so as to hold the guide rails, and when the operator's cab 7 is in a fixed position with respect to the lifting mast 5, the locking support projecting on the mast side. The lifting mast is used to support the entire load of the cab.

One end or more of one or more main ropes 11 are locked to the suspending tool 6 in a balanced manner, and the other end is wound up on a winding drum 31 on the club.

A tip of a rope 12 for suspending the operator's cab is locked in the operator's cab 7, and the other end is wound on the same winding drum 31 on which the main rope 11 is wound. And the dashpot 13 at the rope lock point with this driver's cab
Is provided, and a sensor 14 that absorbs a shock when the main rope is cut and that detects a suspension force acting on the rope 13 is provided.

The cab hanging rope 12 supports only the load in the cab, and has a diameter smaller than that of the main rope. During normal operation, the cab hanging rope has a small load in the cab. Main rope 11 with suspended load supported
Supported by.

Therefore, when carrying out a normal hoisting work in the apparatus constructed as described above, the main rope 11 is wound and
Rewinding raises and lowers the suspended load and the cab at the same time. At this time, the rope for suspending the driver's cab is not loaded, but it is also wound and unwound at the same time. The load of the operator's cab 7 is supported by the main rope 12 via the locking support 10 and the lifting mast. Should the main rope be cut off, the hanger will drop and the lifting mast via the locking support will release the support of the cab, but at the same time it will be supported by the cab hanging rope 12. The cab will continue to be safely supported.

The operator room suspension rope 12 and the main rope 11 are wound on the same winding drum 31, but the winding drum diameters of both ropes are made equal and the winding amount and the rewinding amount of both ropes are set. And make sure that the rope for suspending the cab in the cab does not sag more than necessary during normal lifting work.

[0016]

The fall prevention device for the cab in the stacker crane according to the present invention is provided with a lifting tool projecting from an elevating mast provided on a guide frame vertically hung on a club of the stacker crane, and the cab is mounted on the elevating mast. The main rope that hangs both the suspended load and the driver's cab load is slidably supported and the operator's cab hanging rope is locked in the cab separately from this main rope. Since they are collected on the same winding drum, there are advantages such as a simple structure that prevents the driver's cab from falling even when the main rope is cut, and improves the safety of lifting work.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view showing an embodiment of an operator's cab drop prevention device in a stacker crane of the present invention.

FIG. 2 is a front view of a stacker crane.

FIG. 3 is a side view of the same.

FIG. 4 is a front view of an elevating mast including a suspender and a driver's cab.

FIG. 5 is a plan view of the same.

FIG. 6 is an explanatory view of a lock portion of a rope for suspending a cab.

FIG. 7 is an external view of FIG.

[Explanation of symbols]

 1 Beam 2 Club 3 Winding Drum Device 4 Guide Frame 5 Lifting Mast 6 Lifting Tool 7 Driver's Cab 10 Locking Support Tool 11 Main Rope 12 Driver's Room Hanging Rope

Claims (1)

[Claims] 1. A lifting frame is provided on a guide frame vertically hung on a club of a stacker crane, and a lifting tool is provided on the lifting mast. The lifting cab supports a driver's cab slidably and the lifting tool is hung on the lifting tool. A stacker consisting of a main rope that hangs both the load and the cab load, and a rope for suspending the cab separate from the main rope in the cab, and both ropes are wound on the same take-up drum. Fall prevention device in the cab of a crane.