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Drive circuit of elevator brake

A technology of elevator brakes and drive circuits, applied in the direction of hoisting devices, etc., can solve the problems of short electrical life of safety relays and high noise of contactors, and achieve the effect of prolonging service life and reducing noise.

Inactive Publication Date: 2017-12-29
HANGZHOU OPTIMAX TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a drive circuit for an elevator brake to solve the problems of high noise of the contactor and short electrical life of the safety relay

Method used

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  • Drive circuit of elevator brake
  • Drive circuit of elevator brake
  • Drive circuit of elevator brake

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Embodiment Construction

[0031] The driving circuit of the elevator brake of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0032] Such as figure 1 As shown, a driving circuit for an elevator brake includes: a filter and protection circuit, a controllable switch, a rectifier bridge and a safety relay. To switch the on-off state of the drive circuit.

[0033] The controllable switch and the safety relay are used as control components to receive the control signal from the elevator main control board to switch the on-off state of the elevator brake power supply circuit. When the elevator starts to run, the elevator main board first drives the safety relay to close, and then drives it after a delay of the first predetermined time. The controllable switch is turned on; when the elevator stops running, the elevator main board first drives the controllable switch to turn off, and drives the safety relay to close after a second predetermined time del...

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Abstract

The invention discloses a drive circuit of an elevator brake. The drive circuit of the elevator brake comprises a power supply circuit of the elevator brake, a control element for switching an on-off state of the power supply circuit, and an elevator main control board for sending an on-off drive signal to the control element. The control element comprises a controllable switch and a safety relay serially connected into the power supply circuit; when an elevator starts to run, the elevator main board firstly drives the safety relay to close, delays in first preset time and then drives the controllable switch to switch on; and when the elevator stops running, the elevator main board firstly drives the controllable switch to switch off, delays in second preset time and then drives the safety relay to close. According to the drive circuit of the elevator brake provided by the invention, the noise generated by the action of the brake can be reduced, and the service life of the safety relay is prolonged.

Description

technical field [0001] The invention relates to the technical field of elevators, in particular to a drive circuit for an elevator brake. Background technique [0002] The brake is the most important safety guarantee component in the elevator. When the elevator breaks down, it enables the car to decelerate and stop in an emergency and keep it at a standstill. The brake is adjacent to the motor and is installed at the brake wheel where the motor shaft and the worm shaft are connected to effectively control the active shaft of the motor and regulate the operation and stop of the motor. [0003] In the prior art, elevator brakes are generally controlled by connecting the contacts of two contactors in series. The contactors make a lot of noise when they operate, especially in villa elevators and places where the use environment is relatively quiet. The operating noise of the safety relay is much smaller than that of the contactor, but due to the difference in the mechanical str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66D5/30
CPCB66D5/30
Inventor 樊钢枪叶振华赵锴蔡卓帆邵占丰杜华坚
Owner HANGZHOU OPTIMAX TECH
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