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Electromagnet controller of elevator up-line protector

A technology of controller and protector, which is applied in hoisting devices and other directions, can solve the problems of restricting the application of brake electromagnets, affecting the service life of shut-off contacts, and the residual magnetism cannot be quickly eliminated, so as to meet market demand and reduce technical The effect of composition

Active Publication Date: 2008-04-02
SHIJIAZHUANG WULON BRAKE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the controller used on the ordinary brake electromagnet generally does not have a residual magnetism removal circuit, this makes it impossible to quickly eliminate the large amount of residual magnetism existing in the electromagnet during braking, resulting in a long delay in the shutdown of the brake, which cannot Meet the time requirements of the elevator up protector
However, if the method of forced circuit breaker to remove residual magnetism is adopted in the controller, a strong electric spark will be generated when the electromagnet brakes, which will affect the service life of the shut-off contact, and then affect the work of the brake electromagnet. reliability
The existence of these unfavorable factors limits the application of brake electromagnets in elevator up protectors

Method used

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Embodiment Construction

[0010] As shown in FIG. 1 , the controller of the present invention is composed of four parts: an excitation circuit 1 , a DC maintenance circuit 2 , a trickle charging circuit 3 , and a residual magnetization and spark removal circuit 4 . The outputs of the excitation circuit 1 and the DC maintaining circuit 2 are tapped to the load electromagnetic coil L, and the trickle charging circuit 3 and the residual magnetization and spark elimination circuit 4 are connected between the DC maintaining circuit 2 and the load electromagnetic coil L.

[0011] The excitation circuit 1 and the DC maintenance circuit 2 can refer to the circuit structure of relevant parts in the existing electromagnet controller. The excitation circuit 1 in the present invention is from the secondary winding I of the transformer T through the rectifier B 1 , filter capacitor C 2 , connected to the voltage divider circuit R 1 , R 2 . The voltage divider output of the voltage divider circuit is connected t...

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Abstract

An electromagnet controller for the ascending protector of elevator is composed of magnetic exciter, DC maintaining circuit, constant-current charger, demagnetizing and spark-extinguishing circuit and electromagnetic coil as load. It can make it possible that the braking electromagnet is used as the brake is ascending protector.

Description

technical field [0001] The invention relates to a braking electromagnet, in particular to an electromagnet controller for an elevator upward protector. Background technique [0002] With the continuous construction and use of high-rise buildings, the use of elevators is also increasing, and the failures of elevators are also increasing accordingly. One of the failures is that the control and braking of the motor are out of control when the elevator is going up, causing the elevator to rush to the top, thus causing serious safety accidents. Therefore, the relevant state departments have clearly required that an elevator upward protector must be installed in the elevator control device. The core part of the elevator upward protector is the brake that forcibly brakes the fast-moving steel wire rope. For the performance requirements of the brake, first, the braking speed should be fast to play a proper protective role; second, the braking torque should be large to be able to i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66D5/30
Inventor 芮振璞韩伍林
Owner SHIJIAZHUANG WULON BRAKE