Restraint device, elevator equipped with restraint device, and restoration method of restraint device

Abstract

The invention provides a constraint apparatus, which can be reseted safely without a large tool, and an elevator. A case (16) includes a penetrating hole (20), which enables a first rod (17) to pass therethrough. The first rod (17) is arranged on a compensation belt wheel frame (13) and has thread teeth (17a) on the periphery. A clamping member (19) is screwed with the first thread teeth (17a) to clamp the case, and is arranged on the side opposite to the compensation belt wheel frame (13). In a horizontal section, when the clamping member (19) rotates with the first rod as axis, a zone, which is not overlapped with the penetrating hole (20) at any rotational angle, is formed at least on one part. The first thread teeth (17a) is arranged on the position that the clamping member (19) can be contacted with the case by screwing tightly the clamping member (19) when the case (16) is restrained on a constriant guide rail (15) by a constraint mechanism (A).

Description

technical field [0001] The present invention relates to a tie down device, an elevator equipped with the tie down device, and a method for restoring the tie down device. Background technique [0002] In an elevator, there are cases in which, in order to compensate for the weight deviation between the elevator car side and the counterweight side of the main rope that occurs during the lifting and lowering of the elevator car and the counterweight, there is a case that connects the lower part of the elevator car and the counterweight. Compensation sling. In such an elevator, a compensating pulley and a binding device are provided. The compensating pulley is used to guide the compensating sling and give it tension, so as to prevent the compensating sling from disturbing in the hoisting passage when the elevator car and the counterweight are lifted and lowered. While colliding with other parts, the restraint device limits the jumping of the compensation pulley to avoid the foll...

AI Technical Summary

Problems solved by technology

[0007] However, when the restraint device operates in a state where the elevator stops suddenly and the compensating rope is pulled up, when the maintenance personnel uses the jig for returning the restraint device described in Patent Document 1, the elastic force accumulated in the buffer spring is released. , the restraint device jumps up and causes greater danger to maintenance personnel

Therefore, when the restraint device is operated in the state where the compensating sling is pulled up, the restraint device has to be restored while using a chain pulley or a jack to suppress the jump of the restraint device, so as to avoid damage to the restraint device during the restoration work of the restraint device. The restraint device jumps up, which takes more work

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