Cable hoist for elevator and elevator equipment

Abstract

The invention aims to provide a cable hoist for an elevator and a piece of elevator equipment, which have a structure allowing convenient mounting and dismounting of a brake shoe while ensuring the brake performance. According to the cable hoist for the elevator and the elevator equipment of the invention, a brake shoe (12) can be rotated so as to be engaged with or disengaged from a brake device (13). The brake device (13) is fixed at such a position that the brake shoe (12) is disposed within a brake-shoe movable path formed by a guide mechanism (25) which is normally engaged with the brake shoe (12) so as to limit the rotation of the brake shoe (12), and is fixed on a main frame (10) via a brake-device moving mechanism. When the brake shoe (12) needs to be disengaged from the brake device (13), the brake-device moving mechanism moves the brake device (13) to such a position that the brake shoe (12) can be disengaged away from the movable path.

Description

technical field [0001] The invention relates to an elevator winch with a braking device and elevator equipment. Background technique [0002] As a brake device acting on a hoisting machine for an elevator, there is known a direct-drive brake that transmits the force of a brake spring to a brake member and presses the brake member against a braked body for braking (for example, refer to Patent Document 1 and Patent Document 2). The above-mentioned brake is a brake that presses a brake shoe against a brake drum to brake its rotation. Since the brake shoes come into sliding contact with the brake drum during braking, they require regular maintenance and replacement. [0003] prior art literature [0004] patent documents [0005] Patent Document 1 Japanese Patent Application Publication No. 2002-533283 [0006] Patent Document 2 Japanese Patent Laid-Open No. 2006-161920 [0007] The brake shoe is composed of a brake pad portion in contact with the braked member and a fixi...

AI Technical Summary

Problems solved by technology

Since the above work is very complicated and labor-intensive, it is necessary to develop a technology that can perform the work in a simple way and shorten the work time

Especially in recent years, the demand for elevators without a machine room in which the hoist is installed in the hoistway without a machine room has been increasing, and in such an elevator without a machine room, compared with an elevator with a machine room, Not only the equipment installation space and the work space for maintenance work are small, but also the brake device is installed in the narrow space, so there is a problem that the installation and removal of the brake shoe is difficult

[0008] On the other hand, when the brake shoe is pressed against the brake drum, a frictional force that causes the brake shoe to rotate together in the direction of rotation of the brake drum acts on the brake shoe and because of being pressed against the brake drum The resulting reaction force acts on the brake shoe to cause a complex force to twist it. Therefore, when a structure that simplifies the installation and removal of the brake shoe is adopted, the brake shoe may be damaged due to the above force. Disengagement and drop issues

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