CN104214409A - Positioning device of manual pressure-reducing type proportional pilot valve - Google Patents
Positioning device of manual pressure-reducing type proportional pilot valve Download PDFInfo
- Publication number
- CN104214409A CN104214409A CN201410329710.9A CN201410329710A CN104214409A CN 104214409 A CN104214409 A CN 104214409A CN 201410329710 A CN201410329710 A CN 201410329710A CN 104214409 A CN104214409 A CN 104214409A
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- China
- Prior art keywords
- pressing plate
- positioning
- pressing
- positioning device
- pilot valve
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K35/00—Means to prevent accidental or unauthorised actuation
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- 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
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
- F15B13/0422—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with manually-operated pilot valves, e.g. joysticks
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Servomotors (AREA)
Abstract
The invention relates to a positioning device of a manual pressure-reducing type proportional pilot valve, wherein a universal joint is fixedly connected with a pressing plate, the pressing plate is connected with a pressing pin, and the working position of the pressing pin is limited by the pressing plate; the pressing plate is in the shape of a cover, and the cover-shaped inner wall of the pressing plate is connected with a positioning seat which is fixedly arranged on a valve body to form a structure that the cover-shaped inner wall of the pressing plate is always connected with the positioning seat when the pressing plate moves; a positioning steel ball and a supporting spring are arranged on the positioning seat, and the positioning steel ball outwards extends to a position which is connected with the cover-shaped inner wall of the pressing plate under the action of the elastic force of the supporting spring; at least one pressing-plate positioning clamping slot is formed in the cover-shaped inner wall of the pressing plate, and when the positioning steel ball slides into the pressing-plate positioning clamping slot, a handle is stopped from returning to the center by the pressing-plate positioning clamping slot to limit the working position of the pressing pin; when the pressing plate is operated to rotate to a position where the pressing-plate positioning clamping slot and the positioning steel ball which is installed on the positioning seat are placed at the same position, the positioning steel ball enters the clamping slot under the action of the spring force of the supporting spring. The positioning device has the advantages of simple structure, operating-force adjustability and accuracy as well as reliability in positioning.
Description
Technical field
The present invention relates to one and be applied to loader, the positioning device of the hand reducing pressure formula proportional pilot valve in the engineering machinery such as bulldozer, hoist, excavator, loader-digger.
Background technique
The engineering machinery such as current loader, bulldozer, hoist, loader-digger extensively adopt, and the guide oil that manually decompression type proportional pilot valve provides controls the motion of main preventing control valve core, and then control swing arm promotes and decline, scraper bowl are received and struggled against and discharging.At present, the positioning device of widely used proportion pilot control valve mainly contains two kinds: 1) without positioning device; 2) adopt electromagnet location, when handle swings to set angle, by making it produce magnetic force to electromagnet energising, holding the sucker be fixed on handle fork and fixing handle position.
When above-mentioned engineering mechanism works, its swing arm promotes, decline and to receive with scraper bowl that operating time of struggling against relatively is grown, steering force is larger, if manually operated type proportional pilot valve is without positioning device, in work, operator just must use manual control handle always, easily causes operator's fatigue, reduces working efficiency.Electromagnet positioning form complex structure, electromagnetic attraction affect comparatively large by voltage and ambient temperature, suction is difficult to accurately control; In addition, adopt electromagnet location can increase pilot valve body leakage of oil point, strengthen technical difficulty.
Summary of the invention
Object of the present invention is just to provide that a kind of structure is simple, the positioning device of accurate positioning reliable hand reducing pressure formula proportional pilot valve
Solution of the present invention is such:
A kind of positioning device of hand reducing pressure formula proportional pilot valve, valve body be provided with comprise pad, spring seat, Returnning spring, pressure adjusting spring, spool decompression type forerunner proportional control valve and comprise the handle operation mechanism of handle, universal joint, it is characterized in that: described universal joint is fixedly connected with pressing plate, described pressing plate connects with described pad, is limited by the working position of pressing plate to pad, described pressing plate is lid, its lid inwall be fixed on valve body positioning seat and connect, the structure that when forming presser motion, its lid inwall connects with positioning seat all the time, positioning seat is provided with locking ball and supported spring, and described locking ball extends outward to the position connected with pressing plate lid inwall under the elastic force effect of supported spring, described pressing plate is provided with at least one pressing plate locating groove at lid inwall, described pressing plate locating groove is when locking ball slips into pressing plate locating groove, its draw-in groove resistance is greater than control spool, Returnning spring and hydraulic coupling to pad apply to lifting force, in stoping handle to return, the working position of pad is limited, when handle press plate rotary to pressing plate locating groove with the locking ball co-located being arranged on positioning seat time, locking ball enters in draw-in groove under the spring-force driven dual of supported spring, overcome control spool, what Returnning spring and hydraulic coupling applied pad stops handle to be returned to lifting force, thus realize machinery location accurately, the size of positioning means detent force can be adjusted by the rigidity changing supported spring according to user's actual demand, when realizing locating function, pad adjusts to bottom offset by changing pressing plate locating groove position.
Technological scheme also comprises more specifically: the lid inner wall surface of described pressing plate is sphere, and described positioning seat outer surface face is the curved surface with pressing plate lid inwall mating spherical surfaces, and during presser motion, its lid inwall connects with positioning seat all the time.
Further: the pressing plate locating groove that described pressing plate lid inwall is arranged is ring-type.
Further: the pressing plate locating groove that described pressing plate lid inwall is arranged is the single draw-in groove of independence arranged in relevant position.
Further: described pressing plate and pad connecting part are cambered surface.
Further: described pressing plate locating groove shape is the one of arc, V-arrangement, rectangle.
Advantage of the present invention is that structure is simple, and it is reliable with accurate positioning that steering force is adjustable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is embodiment 1 structural representation of pressing plate 2.
Fig. 3 is embodiment 2 structural representation of pressing plate 2.
Fig. 4 is embodiment 3 structural representation of pressing plate 2.
Fig. 5 is embodiment 4 structural representation of pressing plate 2.
Fig. 6 is the structural representation of positioning seat 6.
1. nuts, 2. pressing plate, 3. universal joint, 4. supported spring, 5. locking ball, 6. positioning seat, 7. pad, 8. spring seat, 9. Returnning spring, 10. pressure adjusting spring, 11. spools, 12. valve import oil ducts, 13. valve bodies, 14. rubber covers, 15. handles, 16. pressing plate locating grooves, hydraulic fluid port P. valve filler opening, hydraulic fluid port 2 and 4. valve actuator port in figure.
Embodiment
As shown in Figure 1, the mechanical locating function of the hand-operated decompression type forerunner proportional control valve of the embodiment of the present invention, mainly contains pressing plate 2, supported spring 4, locking ball 5, positioning seat 6 cooperatively interacts realization.Pressing plate 2 is fixed on universal joint 3 by nut 1, positioning seat 6 is fixed on valve body 13 by universal joint 3, supported spring 4 and locking ball 5 to load on positioning seat 6 in mounting hole successively, handle 15 is connected with universal joint 3 by screw thread, swing handle 15 makes universal joint 3 and pressing plate 2 fixed thereon follow and swings equal angular to the right to the right, bottom pressing plate 2, cambered surface press against pad 7 and moves down, pad 7 lower end part spring seat 8 also moves down, Returnning spring 9 is compressed, spool 11 and pressure adjusting spring 10 are followed together with spring seat 8 and are moved down, when hydraulic fluid port on spool 11 and valve import oil duct 12 are connected, valve oil inlet P is by valve import oil duct 12, spool 11 internal oil channel communicates with valve actuator port 2, pilot valve starts to main control valve oil-feeding control main valve plug motion, continue swing handle 15 to the right, when on pressing plate 2, draw-in groove 16 moves to locking ball 5 position on positioning seat 6, locking ball 5 snaps in draw-in groove 16 under the effect of supported spring 4 precompression, overcome and control spool 11, Returnning spring 9 and hydraulic coupling stop in handle 15 times to the upwards reasoning that pad 7 applies, thus realize machinery location accurately.
The structure of positioning seat 6 as shown in Figure 5, its outer surface is the curvilinerar figure matched with pressing plate 2 lid sphere inwall, two locking balls 5 and supported spring 4 is symmetrically arranged with at positioning seat 6, described locking ball 5 extends outward to the position connected with pressing plate 2 lid inwall under the elastic force effect of supported spring 4, and the endoporus of positioning seat 6 is fixed on valve body 13 by universal joint 3.
The embodiment of pressing plate 2 has several as follows:
Embodiment 1:
As shown in Figure 2, pressing plate lid inner wall surface has upper and lower two symmetrical pressing plate locating grooves 16, and pressing plate locating groove 16 is ring-type draw-in groove.
Embodiment 2:
As shown in Figure 3, a symmetrical draw-in groove is arranged at pressing plate lid inner wall surface top.
Embodiment 3:
As shown in Figure 4, a symmetrical ring-type draw-in groove is arranged at pressing plate lid inner wall surface bottom.
Embodiment 4:
As shown in Figure 5, pressing plate lid inner wall surface is monolateral upper and lower two independently single draw-in grooves.
The large I of detent force of positioning device of the present invention is adjusted by the rigidity changing supported spring 4 according to user's actual demand, and when realizing locating function, pad 7 adjusts to bottom offset by changing pressing plate 2 top board locating groove 16 position.
Pressing plate locating groove 16 shape comprises the geometrical shapies such as arc, V-arrangement, rectangle.
Claims (6)
1. the positioning device of a hand reducing pressure formula proportional pilot valve, valve body (13) is provided with the decompression type forerunner proportional control valve and the handle operation mechanism comprising handle (15), universal joint (3) that comprise pad (7), spring seat (8), Returnning spring (9), pressure adjusting spring (10), spool (11), it is characterized in that: described universal joint (3) is fixedly connected with pressing plate (2), described pressing plate (2) connects with described pad (7), is limited by the working position of pressing plate (2) to pad (7); Described pressing plate (2) is lid, its lid inwall be fixed on valve body (13) positioning seat (6) and connect, the structure that when forming pressing plate (2) motion, its lid inwall connects with positioning seat (6) all the time; Positioning seat (6) is provided with locking ball (5) and supported spring (4), and described locking ball (5) extends outward to the position connected with pressing plate (2) lid inwall under the elastic force effect of supported spring (4); Described pressing plate (2) is provided with at least one pressing plate locating groove (16) at lid inwall, described pressing plate locating groove (16) is when locking ball (5) slips into pressing plate locating groove (16), its draw-in groove resistance be greater than control spool (11), Returnning spring (9) and hydraulic coupling to pad (7) apply to lifting force, in stoping handle (15) to return, the working position of pad (7) is limited.
2. the positioning device of hand reducing pressure formula proportional pilot valve according to claim 1, it is characterized in that: the lid inner wall surface of described pressing plate (2) is sphere, described positioning seat (6) outer surface face is the curved surface with pressing plate (2) lid inwall mating spherical surfaces, and during pressing plate (2) motion, its lid inwall connects with positioning seat (6) all the time.
3. the positioning device of hand reducing pressure formula proportional pilot valve according to claim 1, is characterized in that: the pressing plate locating groove (16) that described pressing plate (2) lid inwall is arranged is ring-type.
4. the positioning device of hand reducing pressure formula proportional pilot valve according to claim 1, is characterized in that: the pressing plate locating groove (16) that described pressing plate (2) lid inwall is arranged is the single draw-in groove of independence arranged in relevant position.
5. the positioning device of hand reducing pressure formula proportional pilot valve according to claim 1, is characterized in that: described pressing plate (2) and pad (7) connecting part are cambered surface.
6. the positioning device of hand reducing pressure formula proportional pilot valve according to claim 1, is characterized in that: described pressing plate locating groove (16) shape is the one of arc, V-arrangement, rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410329710.9A CN104214409B (en) | 2014-07-11 | 2014-07-11 | The positioner of hand reducing pressure formula proportional pilot valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410329710.9A CN104214409B (en) | 2014-07-11 | 2014-07-11 | The positioner of hand reducing pressure formula proportional pilot valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104214409A true CN104214409A (en) | 2014-12-17 |
| CN104214409B CN104214409B (en) | 2017-01-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410329710.9A Active CN104214409B (en) | 2014-07-11 | 2014-07-11 | The positioner of hand reducing pressure formula proportional pilot valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN104214409B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969001A (en) * | 2015-10-19 | 2017-07-21 | 罗伯特·博世有限公司 | Hydraulic fluid distributor under controlled pressure |
| CN108331958A (en) * | 2017-01-19 | 2018-07-27 | 左天乔 | Air pressure operating device |
| CN110088486A (en) * | 2016-12-16 | 2019-08-02 | 沃而福股份公司 | Hydraulic servomechanism |
| WO2024001133A1 (en) * | 2022-06-30 | 2024-01-04 | 三一汽车起重机械有限公司 | Operating handle, rotation control system, and operation machine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5313983A (en) * | 1993-03-29 | 1994-05-24 | Dana Corporation | Remote hydraulic control systems |
| US5638866A (en) * | 1996-03-01 | 1997-06-17 | Dana Corporation | Detent arrangement for holding hydraulic valve members stroked |
| US20030084782A1 (en) * | 2001-11-08 | 2003-05-08 | Tomohisa Kaneda | Hydraulic signal output device |
| CN102906430A (en) * | 2010-01-29 | 2013-01-30 | 罗伯特·博世有限公司 | Hydraulic pilot control unit |
| CN103299090A (en) * | 2011-01-07 | 2013-09-11 | 博世力士乐Dsi公司 | Pressure regulating device with detection of the neutral position |
| CN203297183U (en) * | 2013-05-24 | 2013-11-20 | 平原机器厂（新乡） | Manual pilot valve |
| CN203412830U (en) * | 2013-03-25 | 2014-01-29 | 安徽金达利液压有限公司 | Hand-operated pilot valve |
-
2014
- 2014-07-11 CN CN201410329710.9A patent/CN104214409B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5313983A (en) * | 1993-03-29 | 1994-05-24 | Dana Corporation | Remote hydraulic control systems |
| US5638866A (en) * | 1996-03-01 | 1997-06-17 | Dana Corporation | Detent arrangement for holding hydraulic valve members stroked |
| US20030084782A1 (en) * | 2001-11-08 | 2003-05-08 | Tomohisa Kaneda | Hydraulic signal output device |
| CN102906430A (en) * | 2010-01-29 | 2013-01-30 | 罗伯特·博世有限公司 | Hydraulic pilot control unit |
| CN103299090A (en) * | 2011-01-07 | 2013-09-11 | 博世力士乐Dsi公司 | Pressure regulating device with detection of the neutral position |
| CN203412830U (en) * | 2013-03-25 | 2014-01-29 | 安徽金达利液压有限公司 | Hand-operated pilot valve |
| CN203297183U (en) * | 2013-05-24 | 2013-11-20 | 平原机器厂（新乡） | Manual pilot valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969001A (en) * | 2015-10-19 | 2017-07-21 | 罗伯特·博世有限公司 | Hydraulic fluid distributor under controlled pressure |
| CN110088486A (en) * | 2016-12-16 | 2019-08-02 | 沃而福股份公司 | Hydraulic servomechanism |
| CN108331958A (en) * | 2017-01-19 | 2018-07-27 | 左天乔 | Air pressure operating device |
| WO2024001133A1 (en) * | 2022-06-30 | 2024-01-04 | 三一汽车起重机械有限公司 | Operating handle, rotation control system, and operation machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104214409B (en) | 2017-01-04 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Tang Xiaoyang Inventor after: Gao Yingda Inventor after: Jiang Tuo Inventor after: Ding Wei Inventor after: Li Guozhen Inventor before: Tang Xiaoyang Inventor before: Gao Yingda Inventor before: Jiang Tuo Inventor before: Ding Wei |
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| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |