Universal multifunctional safety circuit board for synchronous and asynchronous elevators

Abstract

The invention discloses a universal multifunctional safety circuit board for synchronous and asynchronous elevators. The universal multifunctional safety circuit board comprises a door safety interlock loop, an upper door opening and closing detection loop, a lower door opening and closing detection loop, an advanced door opening control loop, a relay detection and door signal dual detection loop,a door lock safety control loop, an asynchronous elevator accidental movement control loop and an elevator outside safety loop. According to the universal multifunctional safety circuit board, on thebasis that a releveling plate is used in an original elevator and in the condition that components and parts are not additionally arranged, a universal lift car accidental movement detection functionof the synchronous and asynchronous elevators is realized only by adjusting and optimizing internal wiring; in addition, the universal multifunctional safety circuit board is organically combined with a control system, multiple functions of advanced door opening and releveling and door lock short-circuit detection and the like can be realized, and the universal design of one board with multiple purposes is realized; and the universal multifunctional safety circuit board has the advantage of low cost and is favorable for managing the whole link of production, after sale, maintenance and the like.

Description

technical field [0001] The invention belongs to the technical field of elevator control, and in particular relates to a universal multifunctional safety circuit board for synchronous and asynchronous elevators. Background technique [0002] At present, except for a few elevators that do not have the function of opening the door in advance and re-leveling, most elevators have the function of car accidental movement protection (Unintended car movement protection system, UCMP). Due to the different braking principles of synchronous and asynchronous elevators, the braking components for accidental movement protection are also different. Synchronous elevators can use the main engine brake as the braking subsystem, while asynchronous elevators can only use rope clamps and rail clamps. As the braking subsystem, based on the above differences, most of the safety circuit boards used in the UCMP detection subsystem adopt different design schemes. Generally, the safety circuit board de...

AI Technical Summary

Problems solved by technology

Due to the different braking principles of synchronous and asynchronous elevators, the braking components for accidental movement protection are also different. Synchronous elevators can use the main engine brake as the braking subsystem, while asynchronous elevators can only use rope clamps and rail clamps. As the braking subsystem, based on the above differences, most of the safety circuit boards used in the UCMP detection subsystem adopt different design schemes. Generally, the safety circuit board design of asynchronous elevators is more complicated and the cost is higher. This design mode causes synchronization and Asynchronous ladders cannot be used universally, which will easily cause problems such as diverse printing plate materials and error-prone matching, which is not conducive to standardized management and maintenance

[0003] In addition, the newly added door lock short-circuit detection function in the elevator standard requires the elevator to automatically detect whether the door lock is short-circuited. At present, many manufacturers use additional functional safety boards or additional detection devices to achieve this. They have not achieved the same detection safety circuit as UCMP. Board fusion, the design is more complicated and the cost is higher, and the degree of standardization is poor

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