Automatic balance regulating system and method of hanging scaffold for vertical shaft construction

Abstract

An automatic balance regulating system and method of a hanging scaffold for vertical shaft construction is particularly suitable for a winch control system under control of PLC (programmable logic controller) and with variable frequency and regulable speed. The automatic balance regulating system comprises tension sensors arranged on suspension steel wire ropes, an attitude angle sensor installed on the hanging scaffold, a signal acquisition card and a PLC controller which is arranged in a winder chamber; PLC controller acquires signal of attitude angle of the hanging scaffold and signal of the tension of the steel ropes in real time through the attitude angle sensor and the tension sensors respectively, calculates length difference between the length of each of the four steel ropes and the average length thereof, as well as tension difference between the tension of each of the four steel ropes and the average tension thereof, then calculates regulating variables of rotating speed of four winches according to principle that length of each of the four steel ropes is closer to the average length at the same time, and tension of each of the four steel ropes is closer to the average tension at the same time, and furthermore drives the winches to regulate. According to the invention, the automatic balance regulating system can automatically regulate the hanging scaffold from an inclined pose to a horizontal state, and the distribution of tension of steel ropes from a non-uniform state to a balanced state.

Description

technical field [0001] The invention relates to an automatic balance adjustment system and method for a vertical shaft construction suspension plate, especially suitable for leveling the suspension plate posture and balancing the tension of four suspension steel wire ropes during the operation of the vertical shaft construction suspension plate controlled by PLC and frequency conversion speed regulation. , Guarantee the stable, safe and reliable operation of the suspension plate. Background technique [0002] The suspension pan winch mechanism is an important equipment in the shaft construction process. During the well construction operation, the suspension pan needs to be lifted and lowered. Because there is no guiding device during the operation of the suspension pan, the center of mass of the suspension pan is eccentric and the running speed of the four winches is not synchronized, these factors will cause the suspension pan to run unsteadily during the lifting process, a...

AI Technical Summary

Problems solved by technology

Because there is no guiding device during the operation of the suspension pan, the center of mass of the suspension pan is eccentric and the running speed of the four winches is not synchronized, these factors will cause the suspension pan to run unsteadily during the lifting process, and it is prone to tilt, which will also cause the suspension pan to fail. Wire rope tension distribution becomes uneven

The tilted hanging pan will inevitably endanger the personal safety of the workers; the uneven tension distribution will affect the overall service life of the wire rope on the one hand, and on the other hand, it will also cause safety hazards

At present, due to the advanced technology of PLC control and frequency conversion speed regulation, the control system of the suspension winch has carried out technical transformation on the traditional relay control system. And the information feedback of the wire rope tension, this open-loop control method leads to the problem of the tilt of the suspension pan and the uneven distribution of the tension of the steel wire rope during the operation of the suspension pan

When the suspension pan tilts after running for a certain distance, the winch system must be stopped for leveling, and the signalman on the suspension pan and the operator of the ground winch cooperate to manually level the suspension pan before continuing to run, which not only reduces production Efficiency, but there are also potential safety hazards caused by manual operation errors

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