Detecting method for braking torque of elevator brake

An elevator brake and braking torque technology, applied in the field of elevators, can solve the problems of not being able to detect whether the braking torque of the brake meets the requirements, increasing the gap between the brake and the traction sheave, and insufficient braking force of the brake. Security issues, the effect of reducing implementation costs

Active Publication Date: 2014-12-10
HANGZHOU OPTIMAX TECH
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0005] In the existing elevator control system, the lift and fall of the brake shoe are detected through the feedback signal of the travel switch of the brake, and it is impossible to detect whether the braking torque of the brake meets the requiremen

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  • Detecting method for braking torque of elevator brake
  • Detecting method for braking torque of elevator brake
  • Detecting method for braking torque of elevator brake

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Embodiment Construction

[0042] The present invention will be described in detail below with reference to the drawings and specific embodiments.

[0043] The whole ladder parameter of the elevator that the detection method of the elevator brake braking torque of the present embodiment implements is as follows:

[0044] The rated load of the elevator is m=1000kg, and the rope winding ratio of the elevator is K 1 =2:1, the gear ratio of the elevator is K 2 =1:1, the rated current of the traction motor is I 1 =14A, the rated current of the inverter is I 2 =17A, the rated torque of the traction motor is M=600N·M (Newton·meter), and the diameter of the traction motor traction wheel is d=400mm.

[0045] The detection method of the elevator brake braking torque of the present embodiment, such as figure 1 As shown, the specific process is as follows:

[0046] When the elevator is idle, judge whether the running times or the running time of the elevator are greater than or equal to respective detection th...

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Abstract

The invention discloses a detecting method for a braking torque of an elevator brake. When an elevator is idle, the operation time and the operation times are judged; when one of the two reaches a detecting threshold, the detecting function for the braking torque of the brake is automatically started, so that the torque current is applied to a traction motor after an elevator car is operated to a top floor; the range of the braking torque is detected according to the torque current applied to the traction motor and the movement condition of the traction motor; and a corresponding alarm is given. The detecting method for the braking toque can timely detect the fault of the brake, improves the pre-judgment capacity to the fault of the brake, and can effectively prevent the accidents caused by insufficient braking torque of the brake; the elevator is operated to the top floor in detection, so that the elevator is prevented from generating severe collision accidents when the detection is unsuccessful; and the detecting method is performed without needing to change a hardware structure of an existing elevator control system, so that the reduction of the implementation cost is facilitated, and the promotion is convenient.

Description

technical field [0001] The invention relates to the technical field of elevators, in particular to a method for detecting braking torque of an elevator brake. Background technique [0002] The elevator is one of the most commonly used means of transportation in today's society. Its high safety is mainly due to the many safety devices on the elevator. The brake of the traction motor is the most important safety protection device for the traction elevator, and it is also the most frequent action on the elevator. In the event of a fall or rush to the top, the brake is also the first line of safety defense, so the braking performance of the brake directly affects the safety performance of an elevator machine. [0003] Two-way thrust elevator brake is a friction brake that generates two-way electromagnetic thrust when energized to separate the brake mechanism from the rotating part of the traction motor. When the power is turned off, the electromagnetic force disappears. It is m...

Claims

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Application Information

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IPC IPC(8): B66B5/02
Inventor 奚永新周伟阳赵银波
Owner HANGZHOU OPTIMAX TECH
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