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High frequency large flow 2D digital servo valve

A digital servo and high-flow technology, applied in servo motor components, fluid pressure actuators, mechanical equipment, etc., can solve the problems of insufficient dynamic characteristics, poor anti-pollution ability, complex structure, etc., and achieve simple structure and anti-pollution The effect of strong ability and low precision requirement

Active Publication Date: 2013-01-16
河南航天流体控制技术有限公司
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Problems solved by technology

[0005] In order to overcome the shortcomings of existing large-flow electro-hydraulic servo valves, such as complex structure, many stages, poor anti-pollution ability, and insufficient dynamic characteristics, the present invention provides a valve with good dynamic response characteristics and suitable for working under large flow conditions. , high frequency and large flow 2D digital servo valve with simple structure, high precision and strong anti-pollution ability

Method used

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  • High frequency large flow 2D digital servo valve
  • High frequency large flow 2D digital servo valve
  • High frequency large flow 2D digital servo valve

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] refer to Figure 1 to Figure 5 , a high-frequency and large-flow 2D digital servo valve, including a multi-pole AC servo motor 27, a torque amplification mechanism, a servo screw mechanism, a limit pin 3, a valve body 26, a rear cover plate 20, a box cover 6, and a right plug ring 8 , Concentric ring 9, motor mounting plate 1, O-rings 14, 15, 16, 17, 18, 22 and screws 4, 10, 11, 12, 13, 19, 23, 25, 28, 29, 30.

[0026] The multi-pole AC servo motor 27 is used as an electro-mechanical converter for driving the digital valve, located on the upper end of the valve body 26, and connected with the motor mounting plate 1 through screws 28, 29, 30. The box cover 6 is connected to the motor mounting plate 1 by screws 4, 11, 12.

[0027] The torque amplifying mechanism includes a gear 2 and a balance wheel 5. The gear 2 is press-fitted on the extended shaft of the mult...

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Abstract

A high frequency large flow 2D digital servo valve comprises a valve body, a mulitpolar AC servo motor, a moment amplifying mechanism, a valve plug and a valve sleeve, the output shaft of the mulitpolar AC servo motor is connected with the input end of the moment amplifying mechanism, the output end of the moment amplifying mechanism is fixedly connected with the front end of the valve plug, the valve sleeve is sealed in the valve body, the valve plug is rotationally installed in the valve sleeve, the left end of the valve plug, the valve sleeve and a back cover plate construct a sensitivity chamber, the surface of ledges of the valve plug in the sensitivity chamber is respectively provided with a high pressure hole and a low pressure hole which are arranged in axial symmetry, both the high pressure hole and the low pressure hole are of bow shape, the bowstring of the high pressure hole and that of the low pressure hole are parallel, the inner surface of the valve sleeve outside the sensitivity chamber is provided with a pair of spiral grooves in axial symmetry, one end of the pair of spiral grooves is communicated with the sensitivity chamber, and the other end thereof covers thearea between adjacent high pressure hole bowstring and low pressure hole bowstring. The invention has excellent dynamic response property, is suitable to work under state of large flow, and has simple structure, high precision and strong anti-pollution capacity.

Description

technical field [0001] The invention belongs to an electro-hydraulic servo valve in the field of fluid transmission and control, in particular to a high-frequency and large-flow 2D digital servo valve. Background technique [0002] High-frequency and large-flow electro-hydraulic servo valves are key components of high-frequency electro-hydraulic vibration tables, high-frequency material testing machines and other high-frequency electro-hydraulic servo systems. Its performance determines the performance of the electro-hydraulic servo system. With the development of space technology, electro-hydraulic vibration tables are required to have high-frequency response and high thrust; moreover, in order to shorten the time period of material testing and improve the performance of material testing machines, material testing machines are also required to have high-frequency performance. This requires the electro-hydraulic servo valve as a control element to have high frequency respon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/02
Inventor 阮健李胜孟彬
Owner 河南航天流体控制技术有限公司
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