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Elevator braking system redundancy loop

A brake system and hoist technology, applied in elevators, hoisting devices, transportation and packaging, etc., can solve the problem that the oil in the brake cannot be quickly returned to the mailbox, the spool of the reversing valve is stuck, and the cost of replacing the hydraulic station High-level problems, to achieve the effect of meeting the requirements of regulations, small construction volume, and short lifting time

Pending Publication Date: 2018-02-09
XINAN COAL IND ZAOZHUANG COAL MINING GROUP
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AI Technical Summary

Problems solved by technology

[0003] Due to various pollutions of the oil in the hydraulic station, such as stolen oil caps, or sundries in the process of processing and installation, etc., the spool of the reversing valve will be stuck, causing the oil in the brake to not be returned to the mailbox quickly, resulting in malfunction, leading to accidents
The 2016 version of the "Coal Mine Safety Regulations" stipulates that "safe braking must have a parallel redundant oil return channel", which further improves the function of the hydraulic station and provides the safety of the hydraulic station, so it is necessary to modify the control valve group or Replace the hydraulic station, but the cost of replacing the hydraulic station is high, so the control valve group needs to be improved

Method used

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  • Elevator braking system redundancy loop

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0016] A redundant circuit of the braking system of a hoist, including two hydraulic stations, the hydraulic station includes a fuel tank 1, an oil pump 2 connected to the fuel tank, and the two hydraulic stations are connected to pipe A and B pipe, said B pipe includes redundant solenoid valve G1 and redundant solenoid valve G2 connected with hydraulic reversing valve 3, said redundant solenoid valve G1 and redundant solenoid valve G2 are connected in parallel, redundant solenoid valve G1 and redundant solenoid valve The input end of the redundant electromagnetic valve G2 is connected to the output end of the hydraulic reversing valve 3, the output ends of the redundant electromagnetic valve G1 and the redundant electromagnetic valve G2 are connected to the working cylinder, and the b pipe also includes b for safety braking. The electromagneti...

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Abstract

The invention relates to an elevator braking system redundancy loop which is provided with a solenoid directional valve G7. Oil is returned when the solenoid directional valve G7 is powered off, the solenoid directional valve G7 is connected with a solenoid directional valve G3 in parallel to achieve oil returning, a hydraulic pressure station does not need to be replaced, the construction amountis small, the lifting influencing time is short, the number of replaced accessories is small, cost is low, the parallel connection redundancy loop of a braking system is achieved, the regulation requirement is met, and the lifting machine safety factor is improved.

Description

technical field [0001] The invention relates to a redundant circuit of a brake system of a hoist, which belongs to the technical field of design and manufacture of mining engineering machinery. Background technique [0002] In the hoisting system of the mine, the hydraulic braking system is an important protection device, and all protections are realized through this system. The hydraulic braking system is composed of a hydraulic station, a brake and an electric control system. The hydraulic station is used as a power source, and the braking function of the hoist is realized by controlling the action of the brake through oil pressure. When a failure occurs, the hydraulic station must quickly return oil to ensure that the brake is locked. , to achieve safe braking, so the stability and reliability of the hydraulic station is an important guarantee for mine safety improvement, and its working performance and quality are related to the safety of personal equipment. [0003] Du...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B5/16B66D5/28
CPCB66B5/16B66D5/28B66D2700/035
Inventor 赵伟邵长存张永周峰李庆双于洋张超董馨升
Owner XINAN COAL IND ZAOZHUANG COAL MINING GROUP
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