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Leakage-free servo valve controlled by speed-regulating motor

A speed-regulating motor and no leakage technology, which is applied in the direction of servo motor components, mechanical equipment, fluid pressure actuators, etc., can solve the problems of large internal leakage and low efficiency of servo valves, and achieve large internal leakage, low energy consumption, and Solve the effect of low reliability

Active Publication Date: 2014-12-10
WUXI SANXIN DRIVE CONTROL
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Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a non-leakage servo valve controlled by a speed-regulating motor, which can realize the integration of power drive and servo control, and solve the problem of large internal leakage and low efficiency of the servo valve. defect, improves the reliability of the servo valve

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0017] like figure 1 As shown: in order to realize the integration of power drive and servo control, solve the defect of large internal leakage in the servo valve, and improve the reliability of the servo valve, the present invention includes a valve block 10 and a non-leakage valve 4 located in the valve block 10 and The balance piston 8 used to adjust the switching state of the non-leakage valve 4; the closed end of the balance piston 8 is connected to the oil pump 2 for pumping oil into the valve block 10 through the oil pump outlet pipe 15, and the oil pump 2 is connected to the oil pump 2 for driving the The speed regulating motor 1 of the oil pump 2 is connected; the oil volume regulating mechanism 3 is also arranged between the speed regulating motor 1 and the valve block 10, through which the oil quantity in and out of the non-leakage valve 4 is directl...

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Abstract

The invention relates to a power-control-integrated electric-hydraulic servo valve, in particular to a leakage-free servo valve controlled by a speed-regulating motor and belongs to the technical field of electric-hydraulic servo valve control. According to the technical scheme, the leakage-free servo valve comprises a measuring adjusting mechanism driven by the speed-regulating motor, a control valve block and a high-pressure oil pump connected with the speed-regulating motor. Oil discharge amount and direction of the electric-hydraulic servo valve are controlled by a leakage-free valve in the valve block. Opening and closing of the leakage-free valve completely depend on a balance piston and the high-pressure oil pump. Due to the fact that the balance piston and the high-pressure oil pump are controlled by the measuring adjusting mechanism driven by the speed-regulating motor, the oil inlet amount and oil outlet amount of the leakage-free valve are in direct proportion to the rotation speed and rotation direction of the speed-regulating motor. The leakage-proof servo valve has the advantages that power drive and servo control are integrated, the defects that the servo valve is high in internal leakage and low in efficiency are overcome, and reliability of servo elements is increased.

Description

technical field [0001] The invention relates to an electro-hydraulic servo valve integrating power and control, in particular to a non-leakage servo valve controlled by a speed-regulating motor, which belongs to the technical field of electro-hydraulic servo control. Background technique [0002] The electro-hydraulic servo valve is the core hydraulic component in the electro-hydraulic servo control system, and it is the conversion link between the electrical control signal and the hydraulic power drive. The usual electro-hydraulic servo valve is a spool valve driven by a torque motor, a force motor or a proportional electromagnet. Due to the leakage of the spool valve, the usual servo valve has a large air consumption and low efficiency. At the same time, due to the limited driving ability of the torque motor or proportional electromagnet, it is easy to cause the valve core to jam, so the reliability of the servo valve is not as high as other hydraulic components. Content...

Claims

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Application Information

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IPC IPC(8): F15B13/02
Inventor 吴定安
Owner WUXI SANXIN DRIVE CONTROL
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