CN204985132U - Tertiary servo proportion choke valve of large -traffic digital bi -pass cartridge formula - Google Patents
Tertiary servo proportion choke valve of large -traffic digital bi -pass cartridge formula Download PDFInfo
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- CN204985132U CN204985132U CN201520724658.7U CN201520724658U CN204985132U CN 204985132 U CN204985132 U CN 204985132U CN 201520724658 U CN201520724658 U CN 201520724658U CN 204985132 U CN204985132 U CN 204985132U
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Abstract
The utility model discloses a tertiary servo proportion choke valve of large -traffic digital bi -pass cartridge formula, including guide's level, main and digital controller, guide's level is the second grade servovalve pilot valve body, guide's valve barrel, four control limit guide's cases of zero lap, torque motor, guide's filter, force feedback pole and guide's level double jet, pilot valve body lower part are equipped with the hydraulic fluid port, main valve body oil duct and hydraulic fluid port intercommunication, and the main includes main valve body, main valve cover, main valve core and main case position sensor, main valve body lateral part still is equipped with the exhaust hole, the utility model discloses a two -stage servovalve constitutes two closed loop feedback control, and guide's level servovalve adopts the mechanical feedback pole to constitute the closed loop, and the amplifier stage main valve constitutes position electricity feedback principle through built -in displacement sensor, and big microvariation is adjusted large -traffic change in succession according to incoming signal. This valve not only can be to large -traffic continuous closed -cycle control, the also externally pressure compensation effect of closed -loop control output flow rate in servo.
Description
Technical field
The utility model relates to a kind of large discharge numeral two-way plug-in type three grades of servo ratio throttle valve.
Background technique
Common cartridge throttle valve can only play the effect of fixed restriction, can not regulate continuously, although common proportional throttle valve can regulate continuously, but its valve port output signal is low with Flow characteristics precision, Dynamic response is on the low side, and its valve port meta covering amount has dead band to affect, and the Pressure gain of its valve and flow gain are not high, the sensitivity of valve is not high, and the servocontrol can not carried out under effective large discharge condition regulates.
Model utility content
The purpose of this utility model is to provide a kind of large discharge numeral two-way plug-in type three grades of servo ratio throttle valve.
The technical solution adopted in the utility model is:
Large discharge numeral two-way plug-in type three grades of servo ratio throttle valve, comprise pilot stage, main and digital controller, described pilot stage is grade B servo valve, comprises guide valve blocks, guide's valve pocket, zero lap four controls limit pilot valve, torque motor, guide's filter, force feedback bar and pilot stage twin nipple, guide valve blocks is arranged on main valve body, and zero lap four controls pilot valve two ends, limit and regulated by twin nipple pressure chamber, and described guide valve blocks bottom is provided with hydraulic fluid port A1, B1, it is communicated with main valve plug active chamber by main valve body oil duct, described main valve body oil duct and hydraulic fluid port A, B, X, Y, A1, B1 is communicated with, and described main comprises main valve body, main valve housing, main valve plug and main stage spool position sensor, the main valve housing be connected with main valve body be provided with into, oil outlet A, B, main valve body has control port X, with drain tap Y, main valve plug is located in main valve body and main valve housing, main valve plug is inner hollow shape, main valve plug one end is fixedly connected with main stage spool position sensor, joint is provided with main valve plug and leads to oil pocket, main valve plug has two place's sliding rings, is respectively seal ring I and seal ring II, main valve end is provided with the safety cover of position transducer, and described safety cover is outside equipped with external electrical interface, pilot stage electrical interface, the main stage spool position sensor that main valve plug connects is built in safety cover, digital controller is connected with guide valve blocks and primary spool position sensor respectively by cable, control port X and drain tap Y is laid respectively at the both sides of the main valve housing of main valve body attachment face and is communicated with pilot stage by guide valve blocks backing plate, main valve restriction with enter, oil outlet A, B is positioned at main valve housing end and sidepiece and communicates with main valve plug, and main valve body sidepiece is also provided with exhaust port.
Advantage of the present utility model: adopt two-stage servovalve to form Dual-loop feedback control and control, pilot stage servovalve adopts machine feedback bar to form closed loop, amplifier stage main valve forms position electricity feedback principle by inbuilt displacement sensor, regulates continuously according to input signal size variation to large discharge change.This valve not only can regulate large discharge continuous closed-loop in servo-system, also can in the pressure compensation effect of outside closed loop control output flow.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
Wherein: 1, digital controller; 2, safety cover; 3, main stage spool position sensor; 4, external electrical interface; 5, pilot stage electrical interface; 6, torque motor; 7, pilot stage twin nipple; 8, guide's filter; 9, force feedback bar; 10, zero lap four controls limit pilot valve; 11, guide's valve pocket; 12, main valve plug; 13, main valve housing; 14, main valve body; 15, main valve plug active chamber I; 16, seal ring I; 17, main valve plug active chamber II; 18, exhaust port; 19, seal ring II; 20, main valve plug leads to oil pocket; 21, guide valve blocks backing plate; 22, twin nipple pressure chamber; 23, guide valve blocks; 24, main valve restriction; 25, main valve body oil duct.
X: main valve body control port, Y: main valve body drain tap, A1, B1: guide valve blocks control port, A, B: main is into and out of hydraulic fluid port.
Embodiment
As shown in Figure 1, large discharge numeral two-way plug-in type three grades of servo ratio throttle valve, comprise pilot stage, main and digital controller, pilot stage is grade B servo valve, comprises guide valve blocks 23, guide's valve pocket 11, zero lap four controls limit pilot valve 10, torque motor 6, guide's filter 8, force feedback bar 9 and pilot stage twin nipple 7, guide valve blocks is arranged on main valve body, and zero lap four controls pilot valve two ends, limit and regulated by twin nipple pressure chamber 22, and guide valve blocks bottom is provided with hydraulic fluid port A1, B1, it is by main valve body oil duct 25 and main valve plug active chamber I 15, main valve plug active chamber II 17 is communicated with, main valve body oil duct and hydraulic fluid port A, B, X, Y, A1, B1 is communicated with, and main comprises main valve body 14, main valve housing 13, main valve plug 12 and main stage spool position sensor 3, the main valve housing be connected with main valve body be provided with into, oil outlet A, B, main valve body has control port X, with drain tap Y, main valve plug is located in main valve body and main valve housing, main valve plug is inner hollow shape, main valve plug one end is fixedly connected with main stage spool position sensor, joint is provided with main valve plug and leads to oil pocket 20, main valve plug has two place's sliding rings, is respectively seal ring I 16 and seal ring II 19, main valve end is provided with the safety cover 2 of position transducer, and safety cover is outside equipped with external electrical interface 4, pilot stage electrical interface 5, the main stage spool position sensor that main valve plug connects is built in safety cover, digital controller 1 is connected with guide valve blocks and primary spool position sensor respectively by cable, control port X and drain tap Y is laid respectively at the both sides of the main valve housing of main valve body attachment face and is communicated with pilot stage by guide valve blocks backing plate 21, main valve restriction 24 with enter, oil outlet A, B is positioned at main valve housing end and sidepiece and communicates with main valve plug, and main valve body sidepiece is also provided with exhaust port 18.
The utility model adopts two-stage servovalve to form Dual-loop feedback control and controls, pilot stage servovalve adopts machine feedback bar to form closed loop, amplifier stage main valve forms position electricity feedback principle by inbuilt displacement sensor, regulates continuously according to input signal size variation to large discharge change.This valve not only can regulate large discharge continuous closed-loop in servo-system, also can in the pressure compensation effect of outside closed loop control output flow.
Claims (1)
1. large discharge numeral two-way plug-in type three grades of servo ratio throttle valve, is characterized in that: comprise pilot stage, main and digital controller, described pilot stage is grade B servo valve, comprises guide valve blocks, guide's valve pocket, zero lap four controls limit pilot valve, torque motor, guide's filter, force feedback bar and pilot stage twin nipple, guide valve blocks is arranged on main valve body, and zero lap four controls pilot valve two ends, limit and regulated by twin nipple pressure chamber, and described guide valve blocks bottom is provided with hydraulic fluid port A1, B1, it is communicated with main valve plug active chamber by main valve body oil duct, described main valve body oil duct and hydraulic fluid port A, B, X, Y, A1, B1 is communicated with, and described main comprises main valve body, main valve housing, main valve plug and main stage spool position sensor, the main valve housing be connected with main valve body be provided with into, oil outlet A, B, main valve body has control port X, with drain tap Y, main valve plug is located in main valve body and main valve housing, main valve plug is inner hollow shape, main valve plug one end is fixedly connected with main stage spool position sensor, joint is provided with main valve plug and leads to oil pocket, main valve plug has two place's sliding rings, is respectively seal ring I and seal ring II, main valve end is provided with the safety cover of position transducer, and described safety cover is outside equipped with external electrical interface, pilot stage electrical interface, the main stage spool position sensor that main valve plug connects is built in safety cover, digital controller is connected with guide valve blocks and primary spool position sensor respectively by cable, control port X and drain tap Y is laid respectively at the both sides of the main valve housing of main valve body attachment face and is communicated with pilot stage by guide valve blocks backing plate, main valve restriction with enter, oil outlet A, B is positioned at main valve housing end and sidepiece and communicates with main valve plug, and main valve body sidepiece is also provided with exhaust port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520724658.7U CN204985132U (en) | 2015-09-18 | 2015-09-18 | Tertiary servo proportion choke valve of large -traffic digital bi -pass cartridge formula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520724658.7U CN204985132U (en) | 2015-09-18 | 2015-09-18 | Tertiary servo proportion choke valve of large -traffic digital bi -pass cartridge formula |
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| Publication Number | Publication Date |
|---|---|
| CN204985132U true CN204985132U (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520724658.7U Active CN204985132U (en) | 2015-09-18 | 2015-09-18 | Tertiary servo proportion choke valve of large -traffic digital bi -pass cartridge formula |
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| CN (1) | CN204985132U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114387A (en) * | 2015-09-18 | 2015-12-02 | 海门市油威力液压工业有限责任公司 | High-flow digital two-way cartridge type three-stage servo proportional throttle valve |
-
2015
- 2015-09-18 CN CN201520724658.7U patent/CN204985132U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114387A (en) * | 2015-09-18 | 2015-12-02 | 海门市油威力液压工业有限责任公司 | High-flow digital two-way cartridge type three-stage servo proportional throttle valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 226100 Jiangsu city of Nantong Province Haimen Haimen Town Road No. 749 Patentee after: Oil power hydraulic Polytron Technologies Inc Address before: 226100 Jiangsu city of Nantong Province Haimen Haimen Town Road No. 749 Patentee before: Haimen Youweili Hydraulic Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |