Novel dual-power-driven type electric hoist of crane

A dual power drive, electric hoist technology, applied in the spring mechanism, hoisting device, etc., can solve the problems that affect the life safety of workers, the teeth of the reducer are broken, and the braking torque cannot be transmitted.
CN101830406AInactive Publication Date: 2010-09-15尹克善
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
尹克善
Publication Date
2010-09-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a novel dual-power-driven type electric hoist of a crane, which is characterized in that a set of motors with same parameters, a speed reducer and a brake are respectively arranged at two ends of a reel; on a control circuit, two motors are connected in parallel together in the circuit and controlled by the same control electromagnet; same overcurrent relays and same ampere meters are connected into a branch of each motor, and control contacts of each overcurrent relay in the branch of each motor are serially connected in the control circuit.
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Description

technical field

[0001] The invention relates to a dual-power driven electric hoist, in particular to a novel dual-power driven electric hoist for cranes. It belongs to the technical field of hoisting machinery. Background technique

[0002] Electric hoists are a common type of lifting machinery in many workplaces. The existing electric hoist is composed of a motor, a reducer, a brake and a reel, among which the brake and the motor are connected as a whole, and the motor and the brake are interlocked in operation. When the gear of the reducer is broken or the transmission shaft is broken, the braking torque cannot be transmitted to the reel, and the reel will fall rapidly because of this. Once this happens, there may be serious safety accidents , and even seriously affect the safety of workers. Contents of the invention

[0003] The purpose of the present invention is to provide a new type of double-power driven electric hoist for cranes, which overcomes the problem that...

Claims

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