Gyration angle monitoring device, method and system as well as engineering mechanical equipment

Abstract

The invention discloses a gyration angle monitoring device, method and system as well as engineering mechanical equipment. The gyration angle monitoring device comprises a reception device used for receiving a signal for controlling gyration of an object and a signal representing the gyration angle of the object and a control device used for judging if the gyration angle is within a preset range,wherein if the gyration angle is outside the preset range and the signal for controlling the gyration of the object may cause the object to be more deviated from the preset range, the control device shields the signal for controlling the gyration of the object. The gyration angle monitoring device can effectively avoid cables from being twisted, and in particular, aims at situation that the towercrane is electrified again for operation after losing power.

Description

technical field [0001] The present invention relates to the field of construction machinery, and in particular, relates to a rotation angle monitoring device, method, system and construction machinery equipment. Background technique [0002] At present, most of the power supply circuits of domestic tower cranes do not use central collector rings, and the power supply cables will be twisted when the tower cranes rotate. In order to protect the power supply cable from being twisted and damaged, the slewing limiter is generally used to limit the slewing movement of the tower crane. The rotation limiter can prevent the tower crane from further rotation when the rotation angle of the tower crane exceeds a certain range, so as to prevent the cable from being twisted and damaged. [0003] When the tower crane is in a non-working state, according to the use requirements of the tower crane, it is necessary to release the slewing brake of the tower crane to allow the tower crane to r...

AI Technical Summary

Problems solved by technology

Under this working condition, since the slewing limiter loses power, it will lose its limiting effect on the slewing angle of the tower crane, and the tower crane may turn more than 1.5 turns with the wind, or even more than a dozen turns

[0004] In the prior art, the tower crane rotation angle monitoring device is mainly an encoder or a proximity switch, which can realize real-time monitoring of the rotation angle, but when the tower crane is in a non-working state, the electrical control system of the tower crane is powered off, and the encoder or proximity switch The switch cannot work when the power is off, and cannot achieve the function of memorizing the slewing angle of the tower crane under non-working conditions. Therefore, when the tower crane is working again, the operator cannot understand the status of the power supply cable at the slewing support of the tower crane, which may easily lead to twisting of the power supply cable. equipment failure due to damage

Images