Crane rotation control system, control method and crane

Abstract

The invention discloses a crane rotation control system which comprises a detection module, an adjustment module and a control module, wherein the detection module is used for detecting rotation load parameters in a free trackslip state, comprising the magnitude and the direction of a rotation load torque; the adjustment module is used for pre-storing a first functional relation between the rotation load parameters and a rotation current range, acquiring the rotation current range corresponding to the rotation load parameters according to the first functional relation and adjusting the rotation current range; and the control module is used for regulating rotation current in the adjusted rotation current range according to the opening of a rotation handle and controlling a rotation mechanism to rotate under the action of the rotation current corresponding to the opening of the rotation handle. According to the control system, the rotation current range is adjusted according to a rotation load obtained by detecting in the free trackslip state, so that the rotation current can be adjusted according to the opening of the rotation handle to ensure that the rotation speed is automatically adjusted so as to improve the stability and the operation controllability of the rotation mechanism. The invention also provides a crane rotation control method and a crane.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a crane slewing control system and control method and a crane. Background technique [0002] The slewing mechanism of the crane generally includes a hydraulic pump, a slewing motor, a slewing reducer, a slewing support, etc. The operator controls the slewing mechanism through the slewing handle. The size of the pump controls the displacement of the pump, and the size of the displacement of the pump determines the rotation speed, so the rotation speed can be controlled by adjusting the opening of the handle. [0003] However, when the slewing mechanism is subjected to an external force, the slewing speed may become uncontrollable. For example, when the crawler crane is hoisting in wind power, due to the high wind speed of the wind farm, the crawler crane is affected by the wind load, which will affect the slewing speed. When the wind load direction is consistent with the slew...

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention proposes a crane slewing control system and control method and the crane to solve the problem of uncontrollable slewing speed caused by external force on the slewing mechanism during the slewing process of the crane

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