Rope-free lifting machine using lifting force as brake drive force

A technology for brakes and hoists, applied in elevators, elevators in buildings, transportation and packaging, etc., can solve the problems of difficulty in realization, large lifting load and large volume, and achieve the effect of preventing flying accidents and ensuring safety.
CN102040141AInactive Publication Date: 2011-05-04HENAN POLYTECHNIC UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HENAN POLYTECHNIC UNIV
Publication Date
2011-05-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a rope-free lifting machine using a lifting force as a brake drive force. The rope-free lifting machine comprises a supporting girder assembly, a cage, a linear electric motor drive device, a location guiding device, a brake device, a pair of safety tongs and a bumper. Concave strip grooves used as braking rails of the brake device and guiding rails of guiding location wheels are arranged on two side surfaces of the supporting girder assembly. A rotor of a linear electric motor is in split sliding connection with the cage and is connected with a brake push rod, the lifting force of the rotor of the linear electric motor is used as the brake releasing force of a boost type clamp brake, the down accelerated speed of the rope-free lifting machine can be automatically limited without using a special brake drive power supply, a brake driver and a controller, thus the structure of the brake is simplified. The rope-free lifting machine has the four defensive functionsof the power-off protection of the brake, the safety speed-limiting of the brake, the power-off dynamicbraking of the linear electric motor and the overspeed brake of the safety tongs, and fundamentally ensures the safety and the reliability of the lifting machine.
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Description

Technical field

[0001] The invention belongs to the field of cordless hoisting, and in particular relates to a cordless hoist using a lifting force as the driving force of a brake. Background technique

[0002] The hoist or elevator is an important transportation link in mines and various buildings. In ordinary hoisting systems, the hoisting method is well-known. The structure of the hoist is that the machine room is installed on the upper part of the hoist. The rotating motor drives the drum and winds. One end of the steel wire rope on the drum is connected to the car, and the other end is connected to a counterweight. For ultra-high buildings and ultra-deep mines with a large number of people and heavy loads, a high level of transportation and handling capacity is required. However, the hoist occupies a large amount of building space and low transportation capacity is a serious problem.

[0003] In order to overcome the above-mentioned problems, a linear motor cordless hoist tha...

Claims

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