Construction hoist band-type brake emergency stop protection device and construction hoist

A technology for construction lifts and protection devices, which is applied in lifts, transportation and packaging, etc., can solve problems such as unreliability, loss of power to brake coils, and potential safety hazards, so as to reduce the probability of safety problems and ensure the effect of response speed.

Pending Publication Date: 2022-04-12
SHENZHEN INVT ELECTRIC
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

[0003] On this basis, there are mainly two ways to control the emergency stop of the construction hoist in the prior art. One is to manually disconnect the circuit breaker directly by the operator, which will cause the voltage input of the three-phase input power to be cut off immediately, and the inverter will be powered off. Stop, the motor stops, the brake coil is de-energized and the brake piece is locked
But this way of sudden power failure will have adverse effects on the inverter and the motor itself, and there is a great potential safety h

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  • Construction hoist band-type brake emergency stop protection device and construction hoist
  • Construction hoist band-type brake emergency stop protection device and construction hoist
  • Construction hoist band-type brake emergency stop protection device and construction hoist

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Embodiment Construction

[0049] The core of the present invention is to provide a construction hoist brake emergency stop protection device and a construction hoist. On the basis of not disconnecting the circuit breaker on the main control circuit, the double control method combining software brake and hardware wave sealing is accurate and reliable. The emergency stop control of the brake is effectively realized, the response speed to the sudden situation is well guaranteed, the probability of safety problems easily caused by the method in the prior art is reduced, and the frequency converter is protected.

[0050] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invent

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Abstract

The invention discloses a construction hoist band-type brake sudden stop protection device and a construction hoist. A first fault detection module outputs a first signal representing that the construction hoist is to be stopped suddenly when detecting that the construction hoist has an emergency situation, and a wave sealing module is turned off immediately when receiving the first signal; a control signal which is sent by the first processing module and is used for controlling conduction of each switch tube in the frequency converter is cut off to realize hardware wave sealing; meanwhile, when receiving the first signal, the first processing module controls the rectification and voltage regulation circuit to stop voltage conversion so as to control the band-type brake coil to lose power and stop sending the control signal, and software band-type brake is achieved. Compared with the prior art, on the basis of not disconnecting a circuit breaker on a main control loop, the device accurately and reliably realizes brake emergency stop control through a dual control mode of combining software brake and hardware wave sealing, reduces the probability of occurrence of safety problems easily caused by adopting the mode in the prior art, and protects the frequency converter.

Description

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Claims

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Application Information

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Owner SHENZHEN INVT ELECTRIC
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