Electromagnetic lever leveling control safety brake device for lifting equipment

Abstract

The invention discloses an electromagnetic lever flat layer control and safety braking device for a lifting device. A movable rack can move horizontally on a rail assembly or keep at certain determined positions. The top of the movable rack makes direct contact with a main bearing structure of a lifting device lift car after entering a braking state for bearing or makes contact with the main bearing structure through a middle transition bearing part for bearing. An operation mechanism for the movable rack operates the movable rack to horizontally move on a rail hole or stay and keep at certain determined positions, wherein the determined positions include a braking position engaged with a drive rack of the lifting device or a free position completely disengaged from the drive rack of the lifting device and having a certain gap with the drive rack. An electromagnetic pulling lever operates the engagement manner of the racks to conduct flat layer control and safety protection braking, and the beneficial effects that the flat layer accuracy and holding precision are obviously improved, the safety protection braking quality is improved, energy is saved, and cost is saved are achieved.

Description

technical field [0001] The invention relates to the field of leveling control and safety braking devices of lifting equipment, in particular to an electromagnetic lever leveling control safety braking device of lifting equipment. Background technique [0002] The rack and pinion lifting equipment has different characteristics from the traction lifting equipment, but the leveling control of the existing rack and pinion lifting equipment is realized by using the method of the traction lifting equipment through sensor detection and electrical control friction braking. , and due to the performance drift of the detection and control components and the change of the friction coefficient of the friction parts, the leveling accuracy will change; in addition, the safety braking measures of the existing rack and pinion lifting equipment are either by braking the motor shaft, or It is realized through the method of braking the gear shaft. These methods belong to the friction braking me...

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Problems solved by technology

[0002] The rack and pinion lifting equipment has different characteristics from the traction lifting equipment, but the leveling control of the existing rack and pinion lifting equipment is realized by using the method of the traction lifting equipment through sensor detection and electrical control friction braking. , and due to the performance drift of the detection and control components and the change of the friction coefficient of the friction parts, the leveling accuracy will change; in addition, the safety braking measures of the existing rack and pinion lifting equipment are either by braking the motor shaft, or It is realized through the method of 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 there is a problem with the driving gear, the aforementioned methods will be helpless However, it is possible for the driving gear to have problems; therefore, in consideration of improving the leveling accuracy and safety performance, and according to the characteristics of the rack and pinion lifting equipment itself, an improved leveling control and safety braking device is proposed.

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