CN106640818A - Connection mode of valve core of hydraulic valve and displacement detector - Google Patents
Connection mode of valve core of hydraulic valve and displacement detector Download PDFInfo
- Publication number
- CN106640818A CN106640818A CN201710036666.6A CN201710036666A CN106640818A CN 106640818 A CN106640818 A CN 106640818A CN 201710036666 A CN201710036666 A CN 201710036666A CN 106640818 A CN106640818 A CN 106640818A
- Authority
- CN
- China
- Prior art keywords
- valve
- displacement detector
- hydraulic
- hydraulic valve
- expansion link
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
Abstract
The invention provides a connection mode of a valve core of a hydraulic valve and a displacement detector. The displacement detector is in threaded connection with a threaded hole in a side wall of an end cover of the hydraulic valve, meanwhile, the end top of a detection expansion link of the displacement detector is always in contact with a conical surface of the valve core of the hydraulic valve, and the axis of the detection expansion link vertically intersects with that of the valve core of the hydraulic valve. The connection mode of the displacement detector provided by the invention is simple in structure, convenient to install and wide in application; as the detection expansion link of the displacement detector is connected with the valve core through a side face hole of the valve body, the length of the expansion link is greatly reduced, which facilitates the miniaturization of the hydraulic valve; and in the case that holes cannot be formed at the top of some end covers to install displacement detectors, the scheme can be adopted.
Description
Technical field
The present invention relates to the connected mode of a kind of hydraulic valve and its detector.
Background technology
The collection of hydraulic valve spool displacement is not only convenient for observing valve element performance, and can realize the closed loop essence of spool position
Really control.At present, hydraulic valve spool displacement detector is directly axially connected with valve element one end by hydraulic valve end cap mostly, is ascended the throne
Move detector be located at the through hole on hydraulic valve end cap top Nei and displacement detector the flexible rod end top of detection and hydraulic pressure valve core top
All the time line is contacted and is coaxial therewith, as shown in Figure 1.The deficiency of this mounting means is：Axially mounted space is increased, is unfavorable for
Hydraulic valve body miniaturization, axially mounted displacement detector are often in extreme higher position, sensitive for damages during use, due to
Hydraulic valve end cap top mounting location is occupied, and this mounting means is unfavorable for being further added by pilot stage to expand hydraulic valve function,
Meanwhile, in this connected mode, detection expansion link is generally longer, makes certainty of measurement be under some influence.
The content of the invention
The purpose of this patent is to provide and a kind of make hydraulic valve miniaturization and can expand the hydraulic pressure valve core of hydraulic valve function
With the connected mode of displacement detector.Both connected mode include the connection of hydraulic valve end cap and back springing type displacement detector with
And the connection of detection expansion link and hydraulic pressure valve core.
The invention mainly comprises hydraulic valve and back springing type displacement detector, both are prior art, wherein back springing type position
Move detector to be located on hydraulic valve, i.e., displacement detector is threadedly coupled with the screw of hydraulic valve end cap sidewalls, simultaneous displacement detection
The flexible rod end top of detection of device is contacted with the hydraulic pressure valve core conical surface all the time and detects the axis of expansion link and both hydraulic pressure valve cores
Intersect vertically.
The present invention sets the conical surface gradient of valve element with detection expansion link displacement range according to spool displacement scope, works as valve element
In middle position when, displacement detector is demarcated, valve element does reciprocal fortune in valve under hydraulic coupling and spring force collective effect
It is dynamic, when hydraulic coupling and spring force balance each other, valve element stopping action.Valve element side is contacted with detection expansion link point, displacement detecting
The displacement signal for detecting expansion link is passed to industrial computer by data collecting plate card with analog electrical signal form by device, flexible by detection
Bar displacement and the linear relationship of spool displacement, draw valve element actual displacement.
The present invention has the following advantages compared with prior art：
1st, as the detection expansion link of displacement detector is connected with valve element by valve body lateral aperture, make length of telescopic bar significantly
Degree reduces, and is conducive to hydraulic valve miniaturization.
2, install during displacement detector for punching above some end caps, this scheme can be adopted, for example
Need to place electrohydraulic servo valve at the top of ultra-high pressure high flow hydraulic cartridge valve end cap, be used to detect main valve plug displacement without space mounting
Displacement detector, can solve this problem using this scheme.
3rd, the present invention is a kind of with simple structure, the extensive displacement detector connected mode of the easy for installation and suitability.
Description of the drawings
Fig. 1 is traditional displacement detector connected mode main view section simplified schematic diagram.
Fig. 2 is displacement detecting connected mode main view section simplified schematic diagram of the present invention.
Fig. 3 is the main view section simplified schematic diagram of use state of the present invention.
Fig. 4 is that simplified schematic diagram is cutd open by the vertical view office of use state of the present invention.
In figure：1- hydraulic valve end caps, 2- hydraulic valve bodies, 3- hydraulic pressure valve cores, 4- preloading springs, 5- displacement detectors,
6- sealing rings, 7- detection expansion links, 8- electrohydraulic servo valves.
Specific embodiment
In connected mode main view section simplified schematic diagram of the hydraulic pressure valve core shown in Fig. 2 with displacement detector, hydraulic valve
By end cap 1, valve body 2,3 critical piece of valve element and other parts groups into displacement detector 5 is by preloading spring 4, detection expansion link 7
And 6 critical piece of sealing ring and other parts groups into；Displacement detector 5 is threadedly coupled simultaneously with the screw of 1 side wall of hydraulic valve end cap
Sealed by sealing ring 6,7 end of detection expansion link top and 3 conical surface of valve element in hydraulic valve body 2 of simultaneous displacement detector pass through position
The preloading spring 4 moved in detector is contacted all the time and detects that expansion link is intersected vertically with the axis of both hydraulic pressure valve cores.
In the main view section simplified schematic diagram of the use state of the present invention shown in Fig. 3 and Fig. 4, displacement detector 5 is installed on
1 side of hydraulic valve end cap, for detecting the displacement of hydraulic pressure valve core 3 in hydraulic valve body 2.
Claims (1)
1. the connected mode of a kind of hydraulic pressure valve core and displacement detector, its back springing type displacement detector are located on hydraulic valve, its
It is characterised by：Displacement detector is threadedly coupled with the screw of hydraulic valve end cap sidewalls, the detection expansion link of simultaneous displacement detector
End top contacts with the hydraulic pressure valve core conical surface and detects that expansion link and the axis of both hydraulic pressure valve cores intersect vertically all the time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710036666.6A CN106640818A (en) | 2017-01-18 | 2017-01-18 | Connection mode of valve core of hydraulic valve and displacement detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710036666.6A CN106640818A (en) | 2017-01-18 | 2017-01-18 | Connection mode of valve core of hydraulic valve and displacement detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106640818A true CN106640818A (en) | 2017-05-10 |
Family
ID=58841702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710036666.6A Pending CN106640818A (en) | 2017-01-18 | 2017-01-18 | Connection mode of valve core of hydraulic valve and displacement detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106640818A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556854A (en) * | 2018-11-28 | 2019-04-02 | 中国航空工业集团公司西安飞行自动控制研究所 | Rotate the auxiliary valve core detection structure of direct drive servovalve |
| CN111692161A (en) * | 2020-04-30 | 2020-09-22 | 武汉船用机械有限责任公司 | Detection device for displacement of valve core of proportional direction valve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2864186Y (en) * | 2005-12-27 | 2007-01-31 | 辽宁工程技术大学 | Electro-hydraulic digital speed-regulating valve |
| CN201318489Y (en) * | 2008-12-16 | 2009-09-30 | 成都乘风阀门有限责任公司 | Slit type annular hydraulic regulating valve |
| CN101799025A (en) * | 2009-05-15 | 2010-08-11 | 武汉科技学院 | Internal feedback type incremental hydraulic throttling digital valve |
| CN202220765U (en) * | 2011-08-12 | 2012-05-16 | 山东泰丰液压股份有限公司 | Cartridge inserted valve with stroke limitation of position detection of valve core thereof |
| CN103277275A (en) * | 2013-05-29 | 2013-09-04 | 宁波恒力液压股份有限公司 | Electrically-controlled multifunctional combined proportional variable axial plunger pump |
| CN203548995U (en) * | 2013-11-08 | 2014-04-16 | 涌镇液压机械（上海）有限公司 | Improved electro-hydraulic reversing valve with valve element position sensor |
| CN104061357A (en) * | 2014-01-07 | 2014-09-24 | 上海休玛喷涂机械有限公司 | Fully-automatic gas and liquid flow control valve |
| CN206449040U (en) * | 2017-01-18 | 2017-08-29 | 燕山大学 | A kind of connected mode of hydraulic pressure valve core and displacement detector |
-
2017
- 2017-01-18 CN CN201710036666.6A patent/CN106640818A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2864186Y (en) * | 2005-12-27 | 2007-01-31 | 辽宁工程技术大学 | Electro-hydraulic digital speed-regulating valve |
| CN201318489Y (en) * | 2008-12-16 | 2009-09-30 | 成都乘风阀门有限责任公司 | Slit type annular hydraulic regulating valve |
| CN101799025A (en) * | 2009-05-15 | 2010-08-11 | 武汉科技学院 | Internal feedback type incremental hydraulic throttling digital valve |
| CN202220765U (en) * | 2011-08-12 | 2012-05-16 | 山东泰丰液压股份有限公司 | Cartridge inserted valve with stroke limitation of position detection of valve core thereof |
| CN103277275A (en) * | 2013-05-29 | 2013-09-04 | 宁波恒力液压股份有限公司 | Electrically-controlled multifunctional combined proportional variable axial plunger pump |
| CN203548995U (en) * | 2013-11-08 | 2014-04-16 | 涌镇液压机械（上海）有限公司 | Improved electro-hydraulic reversing valve with valve element position sensor |
| CN104061357A (en) * | 2014-01-07 | 2014-09-24 | 上海休玛喷涂机械有限公司 | Fully-automatic gas and liquid flow control valve |
| CN206449040U (en) * | 2017-01-18 | 2017-08-29 | 燕山大学 | A kind of connected mode of hydraulic pressure valve core and displacement detector |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556854A (en) * | 2018-11-28 | 2019-04-02 | 中国航空工业集团公司西安飞行自动控制研究所 | Rotate the auxiliary valve core detection structure of direct drive servovalve |
| CN109556854B (en) * | 2018-11-28 | 2021-09-14 | 中国航空工业集团公司西安飞行自动控制研究所 | Auxiliary valve core detection structure of rotary direct drive servo valve |
| CN111692161A (en) * | 2020-04-30 | 2020-09-22 | 武汉船用机械有限责任公司 | Detection device for displacement of valve core of proportional direction valve |
| CN111692161B (en) * | 2020-04-30 | 2022-08-23 | 武汉船用机械有限责任公司 | Detection device for displacement of valve core of proportional direction valve |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170510 |