AC hydraulic multi-motor high-precision synchronous rotation control device

Abstract

The invention provides an alternating-current hydraulic multi-motor high-precision synchronous rotation control device, and belongs to the technical field of alternating-current hydraulic pressure. Analternating-current servo variable-frequency motor is connected with a three-phase alternating-current generator through a coupler to drive the three-phase alternating-current generator to generate three-phase alternating current; the three-phase alternating-current generator is connected with three synchronous shunts through a pipeline, and the pipeline is provided with a leakage compensating device; the three-phase alternating current is divided into three channels of alternating current which are equal to one another completely by the three synchronous shunts; a three-phase alternating-current hydraulic motor A is separately connected with first oil outlets of the three synchronous shunts through pipelines; a three-phase alternating-current hydraulic motor B is separately connected with second oil outlets of the three synchronous shunts through pipelines; and a three-phase alternating-current hydraulic motor C is separately connected with third oil outlets of the three synchronousshunts through pipelines. By the device, a plurality of three-phase alternating-current hydraulic motors can synchronously and continuously rotate, the structure is simple, and shunting in an optionalratio can be realized; and synchronous rotation at different rated torques can be realized by use of the alternating-current hydraulic motors with different displacements, variable-frequency speed regulation can be carried out, and control precision is high.

Description

technical field [0001] The invention belongs to the technical field of AC hydraulic pressure and relates to mechanical and hydraulic transmission control, in particular to an AC hydraulic multi-motor high-precision synchronous rotation control device. Background technique [0002] The synchronous structure of the hydraulic motor in the traditional hydraulic system is complicated, and many accessories are used. The oil tank occupies a large area and needs to be controlled by hydraulic components such as hydraulic pumps and hydraulic valves. The anti-pollution ability is weak and the power-to-quality ratio is poor. In some special occasions With limited use, AC hydraulics transfer hydraulic energy by means of periodic changes in pressure and flow, usually with no net flow on the energy transfer circuit. In addition to the advantages of smoothness, reliability and high power of the general hydraulic transmission system, the AC hydraulic system also has its unique advantages suc...

AI Technical Summary

Problems solved by technology

It can output energy with high frequency and small amplitude or low frequency and large amplitude. Not only the output power is large, but also the working conditions can be improved, the operation is reliable, and it is suitable for working in special environments. However, in practical applications, AC hydraulic technology is mostly used in vibrating machinery. For In occasions that require rotary motion, the AC hydraulic motor is an important actuator. The development of the actual AC hydraulic pressure is relatively slow. Due to the particularity of the AC hydraulic pressure, the actual pressure and flow of the AC hydraulic pressure are constantly changing. In some occasions, it is necessary to rely on the advantages of AC hydraulic pressure. To realize the synchronous rotation of hydraulic motors, a specially designed AC hydraulic motor and drive control device are required in structure, so that multiple motors can rotate and output synchronously at the required speed to meet the actual requirements. Production and living requirements

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