JPS606062Y2 - Detent mechanism release device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for wedging two members in a relative moving relationship.

Among stacker cranes, the driver's cab is attached to an elevating body that is a loading platform, and the operator's cab moves up and down along with the elevating body.When the hoisting wire rope breaks, the driver's cab automatically prevents the driver's cab from falling. The vehicle must be braked and a safety device must be installed.

There are various methods for this device, but with a fall prevention device that uses a wedge action, once the wedge is activated, a conventional release mechanism is required to return it to its original state. If it does not, the wedge action will not be released unless the wire rope for hoisting is reset and then hoisted with twice the normal force, and the shock when released will be large.

Moreover, the work itself was difficult and dangerous.

The object of the invention is to make it possible to easily release a wedging detent device operated with very high forces.

Next, an embodiment of the present invention will be described based on FIGS. 1 and 2.

In FIG. 1, the stacker crane main body 1 performs a traveling operation by a traveling device 6. As shown in FIG.

By driving the hoisting device 5 of the stacker crane main body 1 and rotating the hoisting drum 3, the hoisting rope 10 can be wound up and let out.

Since this hoisting rope 10 is hung on the elevating body 2 via a sheave, the hoisting rope 10 is attached to the elevating body 2 simultaneously with the rotation of the hoisting drum 3
moves up and down along a guide rail 13 provided on the stacker crane main body 1.

Further, the elevating body 2 has a fork device 7 for loading and unloading the steel material 12, which is a load, onto the rack.

This elevating body 2 is provided with a driver's cab 8, and the elevating body 2
It is integrated with.

Fall prevention devices 20 for preventing the elevating body 2 and the driver's cab 8 from falling are attached to both ends of the elevating body 2.

This fall prevention device 20 is shown in FIG.

The wedge 21 is supported by a fall prevention wire rope 9 from a fall prevention drum 4 driven by a hoisting device 5 in synchronization with the lifting speed of the elevating body 2.

For this purpose, a certain gap is usually applied to the guide rail 13.
and wedge 21.

However, if the hoisting rope 10 breaks for some reason, the wedge 21 supported by the fall-prevention wire rope 9 will fall between the wedge receiver 22 fixed to the falling elevator 2 and the guide rail 13. The lifting body 2 is braked by the frictional force generated at that time.

Next, when the fall prevention device 20 that has once activated is to be restored after replacing the cut hoisting rope, the hoisting rope must be hoisted again with a very large force in order to release the wedge force that is in effect. .

However, release wedges 23, 23 are provided above and below at the attachment portion between the wedge receiver 22 and the elevating body 2.

The direction of the slope of the wedge 23.23 is as shown.

When a jack 24 is placed between these wedges 23.23 and the wedge 23.23 is pushed, the positions of the wedges 23.23 are shifted (the upper wedge 23 moves upward and the lower wedge 23 moves downward). ) The pressing force between the wedge 21 and the wedge receiver 22 can be resolved.

Since the releasing wedge 23 has a slope, it works with a small force,
The fall prevention can be easily released.

Moreover, the pressing force between the wedges can be safely released without sudden fluctuations due to the slow operation of the jack 24 and the wedge surfaces.

According to this embodiment, the fall prevention device can be released more safely and easily without placing a large burden on the hoisting device unlike the conventional fall prevention device without a release mechanism.

As described above, according to the present invention, it is possible to reliably stop an elevating object from falling by the biting action of the wedge as in the conventional case, and it is also possible to easily stop the elevating object from falling without causing a drop in the fall-preventing performance. It is something that can be canceled.

[Brief explanation of the drawing]

Figure 1 is an overall view of the stacker crane that adopted this invention.
FIG. 2 is an enlarged front view of the fall prevention device shown in FIG. 1. 1...Stacker crane body, 2...
Lifting body, 9...Fall prevention wire rope, 10.
... Hoisting rope, 13 ... Guide rail, 21 ... Besabi, 22 ... Besabi holder, 2
3... wedge for release, 24... jackpot.

Claims (1)

[Scope of Claim for Utility Model Registration] A device for preventing an elevating object from falling by intervening a wedge suspended by a wire rope for fall prevention between a guide rail and a wedge receiver provided on the elevating object, comprising: Two releasing wedges are provided between the wedge receiver and the lifting body in the direction of the force generated by the intervention of 1. A releasing device for a detent mechanism, characterized in that a slope is movably provided, and a jack is provided so as to be disposed between an inner end of one releasing wedge and an inner end of the other releasing wedge.