Equipment, system and method for determining revolving angle and engineering machine

Abstract

The invention discloses equipment, a system and a method for determining the revolving angle of a revolving device and an engineering machine. The revolving device is driven by a revolving motor through a speed reducer. The equipment comprises a receiving device for receiving the rotating angle of the revolving motor or a revolving angle transmission detection gear connected with the revolving device or the speed reducer, and a control device for calculating the relative revolving angle of the revolving device according to the rotating angle and the transmission ratio between the revolving motor and the revolving device or the transmission ratio between the revolving angle transmission detection gear and the revolving device, and determining the current absolute revolving angle of the revolving device according to the relative revolving angle and a stored previous absolute revolving angle. Through the technical scheme, the installation requirement of the revolving angle sensor and the concentric condition of the revolving device can be not required to be satisfied, so that eccentric measuring errors do not exist, the accuracy of a measuring result is high, and high reliability is realized.

Description

technical field [0001] The present invention relates to the field of construction machinery, in particular to a device, system, method and construction machinery for determining the rotation angle of a rotation device. Background technique [0002] On a full slewing crane, the slewing angle usually refers to the relative angle between the slewing platform on board and off. Because it is a full rotation, the cumulative angle is usually not recorded. If the rotation is 710°, the rotation angle is recorded as 350° (710-360°). Therefore, the range of the rotation angle is 0-360°, which is the relative angle. In the current domestic and foreign crane control technology, the acquisition of the slewing angle is usually obtained directly by installing a single-turn absolute encoder or an angle sensor 2 at the center of the turntable 1 (coaxial with the slewing bearing). When using a single-turn absolute encoder to obtain the rotation angle, the "fixing device" and "rotation device"...

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Problems solved by technology

[0004] The object of the present invention is to provide a device, system, method and engineering machinery for determining the rotation angle of the rotation device, so as to solve the problem of the measured rotation angle in the prior art when the angle sensor does not completely coincide with the rotation center. The defect of large error and the inability to realize precise control of the rotation angle

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