Gear rack lifting appliance electromagnetic pulling flat layer control safety braking device

Abstract

The invention relates to a ear rack lifting appliance electromagnetic pulling flat layer control safety braking device. A movable rack can be horizontally moved on a rail assembly or keep at certain positions, the top of the movable rack is in direct contact with a main bearing structure of a lift car of a lifting appliance or is subject to contact bearing through a middle transition bearing component after entering the braking state, and an operation mechanism of the movable rack operates the movable rack to horizontally move on a rail hole or is stopped and kept are certain positions; the certain positions include the braking position and the free position, the braking position is meshed with a lifting equipment driving rack, and the free position is completely separated from the lifting equipment driving rack by a certain gap; and a rack meshed manner is adopted for conducting flat layer control and safety protection braking, the beneficial effects of improving the flat layer accuracy, keeping the precision and safely protecting the braking quality are achieved.

Description

technical field [0001] The invention relates to the field of leveling control and safety braking devices for lifting equipment, in particular to an electromagnetically pulling leveling control safety braking device for rack and pinion lifting equipment. Background technique [0002] The leveling control of the existing rack and pinion lifting equipment is realized by using the method of traction lifting equipment through sensor detection and electrical control friction braking, but due to the performance drift of the detection control components and the change of the friction coefficient of the friction parts The leveling accuracy will change; in fact, according to the characteristics of the rack-and-pinion lifting equipment itself, there can be leveling control measures to maintain the accuracy of the leveling layer more stable; the existing safety braking measures for the rack-and-pinion lifting equipment, or It is realized by braking the motor shaft or by braking the gear...

AI Technical Summary

Problems solved by technology

[0002] The leveling control of the existing rack and pinion lifting equipment is realized by using the method of traction lifting equipment through sensor detection and electrical control friction braking, but due to the performance drift of the detection control components and the change of the friction coefficient of the friction parts The leveling accuracy will change; in fact, according to the characteristics of the rack-and-pinion lifting equipment itself, there can be leveling control measures to maintain the accuracy of the leveling layer more stable; the existing safety braking measures for the rack-and-pinion lifting equipment, or It is realized by braking the motor shaft or by braking the gear shaft. These methods belong to the friction braking method, and there may be safety hazards caused by friction material wear or oil pollution. In addition, if the driving gear If a problem occurs, the aforementioned method will be powerless, and it is possible that the drive gear has a problem. Therefore, in order to improve safety performance, the rack and pinion lifting equipment must be equipped with reliable equipment that can deal with problems including the drive gear and similar safety problems. safety brake

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