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Brake device for elevator

A technology of braking device and driving device, which is applied in hoisting devices, brake types, elevators in buildings, etc., and can solve problems such as large installation space of brakes for elevators, large damage to main ropes, and shortened service life of main ropes, etc. question

Inactive Publication Date: 2007-01-24
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the conventional brakes for elevators, the main rope is directly clamped in order to brake the running of the car, so the damage to the main rope is large, and the service life of the main rope is significantly shortened.
[0005] In addition, the existing elevator brakes have a pair of brake shoes, springs, etc. for clamping the main rope, so the structure is complicated and large. Larger installation space for elevator brakes

Method used

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  • Brake device for elevator
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Examples

Experimental program
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Embodiment approach 1

[0014] figure 1 It is a longitudinal sectional view showing the elevator according to Embodiment 1 of the present invention. In the figure, a horizontal beam 2 extending horizontally is arranged on the upper part of the hoistway 1 . On the horizontal beam 2, a pair of traction stands 3 are fixed, and the pair of traction stands 3 are support stands arranged in parallel to each other. A traction machine 4 serving as a driving device and a deflector pulley 5 that is a sheave arranged at a distance from the traction machine 4 are supported on the traction machine stand 3 .

[0015] The hoisting machine 4 has: a drive device body 6 including a motor; and a drive sheave 7 rotated by the drive device body 6 . A plurality of main ropes 8 are wound around the drive sheave 7 and the deflection sheave 5 .

[0016] A car 9 and a counterweight 10 are suspended from the main rope 8 . Each main rope 8 is wound on the driving sheave 7 and the deflecting sheave 5 in order from the car 9 ,...

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PUM

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Abstract

In a brake device for an elevator, a hold-down device is provided on a sheave on which a main rope for suspending a cage and a balance weight runs. A brake disk on which engagement sections are arranged is pressed to the sheave by the hold-down device. An engagement device has a movable section displaceable between an engagement position at which the movable section is engaged with an engagement section is engaged and a release position at which the engagement of the movable section with the engagement section is released. The brake disk is rotatable together with the sheave when the movable section is in the release position, and the brake disk is stopped when the movable section is in the engagement position, braking the rotation of the sheave.

Description

technical field [0001] The present invention relates to a braking device for an elevator for braking the lifting and lowering of the car and the counterweight. Background technique [0002] Conventionally, there has been proposed a brake for an elevator that brakes the car by clamping the main ropes for suspending the car when the speed of the car is abnormal. Existing elevator brakes are located at the top of the hoistway. In addition, the conventional brake for an elevator has a pair of brake shoes, and clamps the main rope by sandwiching the main rope between the respective brake shoes. The clamping force of each brake shoe on the main rope is maintained by a plurality of springs (see Patent Document 1). [0003] Patent Document 1: Japanese Patent Publication No. Hei 7-509212 [0004] However, in the conventional brakes for elevators, the main rope is directly clamped in order to brake the running of the car, so the damage of the main rope is large, and the service lif...

Claims

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Application Information

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IPC IPC(8): B66B11/08
CPCB66B5/00B66D5/30B66D5/14B66B15/02F16D63/006
Inventor 伊藤和昌
Owner MITSUBISHI ELECTRIC CORP
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