Controller of electrically controlled three-speed medium voltage motor and operation mode of controller

Abstract

The invention discloses a controller of an electrically controlled three-speed medium voltage motor and an operation mode of the controller. The controller comprises a controller body, a main control valve, a high speed switching valve, a low speed switching valve, a safety tension valve, a balance valve and a one-way valve, wherein the main control valve, the high speed switching valve, the a low speed switching valve, the safety tension valve, the balance valve and the one-way valve are arranged inside the controller body; the high speed switching valve, the low speed switching valve are pilot control type valves; the high speed switching valve comprises a high speed electromagnet; the low speed switching valve comprises a low speed electromagnet; and the safety tension valve comprises a safety electromagnet and a proportion electromagnet. When the controller is used, hydraulic oil outflows from the oil outlet of the main control valve; then the low speed switching valve and the high speed switching valve are closed; the oil compensating operation of the one-way valve is added; thus the switches of a heavy-load low-speed payoff cable, a medium-load medium-speed payoff cable, a light-load high-speed payoff cable and a heavy-load high-speed takeup cable are achieved; and in addition, the tension of a mooring rope can be adjusted or emergency release is achieved by the safety tension adjustment valve. According to the design, three-gear speed change of a hydraulic motor can be achieved, the controller has the functions of tension adjustment, emergency release and stepless control, and has the advantages of being high in integration degree, simple in structure and convenient to remove and overhaul stoppages.

Description

technical field [0001] The present invention relates to a hydraulic motor controller, in particular to an electronically controlled three-speed medium-voltage motor controller and its operating mode, which is particularly suitable for realizing three-speed shifting, tension adjustment, emergency release and stepless control of a three-cavity hydraulic motor . Background technique [0002] The existing hydraulic motor controller only has the function of manual operation. It cannot know the output torque of the hydraulic motor, nor can it realize the three-speed transmission of the three-chamber hydraulic motor, nor can it solve the practical needs of remote proportional remote control, tension adjustment and emergency release. [0003] The Chinese patent publication number is CN101699080A, and the invention patent published on April 28, 2010 discloses a hydraulic motor controller. The controller extends two working pipelines and one pressure pipeline from a multi-way manual p...

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the defects and problems existing in the prior art that the three-speed transmission of the hydraulic motor cannot be realized, the functional requirements of tension adjustment, emergency release, and stepless control are not available, the degree of integration is low, and the structure is complicated, and it provides An electronically controlled three-speed medium-voltage motor controller with a high degree of integration and a simple structure that can realize three-speed transmission of hydraulic motors, has the functional requirements of tension adjustment, emergency release, and stepless control, and its operation mode

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