CN104454726A - Hydraulic valve with oil returning path with self-locking function - Google Patents
Hydraulic valve with oil returning path with self-locking function Download PDFInfo
- Publication number
- CN104454726A CN104454726A CN201410700182.3A CN201410700182A CN104454726A CN 104454726 A CN104454726 A CN 104454726A CN 201410700182 A CN201410700182 A CN 201410700182A CN 104454726 A CN104454726 A CN 104454726A
- Authority
- CN
- China
- Prior art keywords
- oil
- circuit
- return circuit
- cylinder
- oil return
- 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.)
- Granted
Links
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
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
- F15B13/0405—Valve members; Fluid interconnections therefor for seat valves, i.e. poppet valves
-
- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/202—Externally-operated valves mounted in or on the actuator
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a hydraulic valve with an oil returning path with the self-locking function, and belongs to the technical field of hydraulic valves. The hydraulic valve comprises a jacking component and a pump body component; the jacking component comprises a piston rod, an oil tank, an oil cylinder and a middle cylinder; the piston rod is connected with the oil cylinder which is communicated with a middle cylinder oil path, the oil tank is communicated with the oil cylinder through an oil inlet path, and the pump body component is arranged on the oil inlet path. The middle cylinder is communicated with the oil tank through the oil returning path, a valve bush component is arranged on the oil returning path and comprises a valve bush body, a cavity in the upper portion of the valve bush body is connected with a first oil returning path body in the oil returning path, a cavity in the lower portion of the valve bush body is connected with a second oil returning path body in the oil returning path, an oil hole is formed in the middle of the valve bush body, the bottom of the valve bush body is connected with an oil inlet path, a steel ball is arranged on the upper portion of the oil hole, a jacking rod is elastically arranged on the lower portion of the oil hole, and the jacking rod penetrates through the oil hole to be matched with the steel ball. The hydraulic valve ensures that the piston rod cannot be pulled out when the pump body component does not work, and safety and controlling are ensured.
Description
Technical field
The invention belongs to hydrovalve technical field, be specifically related to a kind of hydrovalve of oil return circuit band auto-lock function.
Background technique
In traditional hydrovalve, cylinder and fuel tank connect often through between oil return circuit, when pump housing apply piston masthead rises, often there is no large impact, but when the pump housing does not act on, when there is external force to hale to make its jacking piston rod side, due to being communicated with of middle cylinder and oil return circuit, piston rod still can be drawn out under the effect of external force, makes it lack certain Security and controlling.
Summary of the invention
For prior art Problems existing, the object of the invention is to design the technological scheme of the hydrovalve that a kind of oil return circuit band auto-lock function is provided.
The hydrovalve of described a kind of oil return circuit band auto-lock function, comprise jacking parts and pump parts, described jacking parts comprise piston rod, fuel tank, oil cylinder and middle cylinder, described piston rod is connected with oil cylinder, described oil cylinder and middle cylinder oil circuit communicate, described fuel tank and oil cylinder are communicated by the oil-feed oil circuit arranged, described oil-feed oil circuit is provided with pump parts, described middle cylinder and fuel tank are communicated by the oil return circuit arranged, it is characterized in that described oil return circuit is provided with valve pocket parts, described valve pocket parts comprise valve sleeve body, described valve sleeve body upper cavity connects the first oil return circuit in oil return circuit, described valve sleeve body lower cavity connects the second oil return circuit in oil return circuit, oilhole is provided with in the middle part of described valve sleeve body, oil-feed oil circuit is connected bottom described valve sleeve body, described oilhole top is provided with steel ball, described oilhole lower elastic is provided with lifting pin, described lifting pin coordinates with steel ball through after oilhole.
The hydrovalve of described a kind of oil return circuit band auto-lock function, is characterized in that described oil-feed oil circuit comprises the second oil-feed oil circuit be arranged between fuel tank and pump parts and the first oil-feed oil circuit be arranged between oil cylinder and pump parts.
The hydrovalve of described a kind of oil return circuit band auto-lock function, is characterized in that described lifting pin is arranged in valve sleeve body by the spring arranged.
The hydrovalve of described a kind of oil return circuit band auto-lock function, is characterized in that described lifting pin is up-small and down-big structure.
The hydrovalve of above-mentioned a kind of oil return circuit band auto-lock function, structure is simple, reasonable in design, by arranging valve pocket parts on oil return circuit, and valve pocket parts are connected with oil-feed oil circuit, oil return circuit is only had and just opens when oil-feed oil circuit works, when oil-feed oil circuit does not work, oil return circuit is then in the state of closedown (pinning), ensures that piston rod can not be pulled out under pump parts does not work, ensures Security and controlling.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of valve pocket parts in the present invention.
In figure: 1-jacking parts; 101-piston rod; 102-fuel tank; 103-oil cylinder; Cylinder in 104-; 201-first oil return circuit; 202-second oil return circuit; 3-valve pocket parts; 301-steel ball; 302-lifting pin; 303-valve sleeve body; 304-oilhole; 305-spring; 4-pump parts; 501-first oil-feed oil circuit; 502-second oil-feed oil circuit.
Embodiment
The present invention is further illustrated below in conjunction with Figure of description.
As shown in the figure, a kind of hydrovalve of oil return circuit band auto-lock function comprises jacking parts 1 and pump parts 4.Jacking parts 1 comprise piston rod 101, fuel tank 102, oil cylinder 103 and middle cylinder 104.Piston rod 101 is connected with oil cylinder 103, by the jacking of oil cylinder 103 control piston bar 101.Oil cylinder 103 and middle cylinder 104 oil circuit communicate, and facilitate oil return.Fuel tank 102 and oil cylinder 103 are communicated by the oil-feed oil circuit arranged, and oil-feed oil circuit is provided with pump parts 4.Oil-feed oil circuit specifically comprises the second oil-feed oil circuit 502 be arranged between fuel tank 102 and pump parts 4 and the first oil-feed oil circuit 501 be arranged between oil cylinder 103 and pump parts 4.Middle cylinder 104 and fuel tank 102 are communicated by the oil return circuit arranged, and oil return circuit is provided with valve pocket parts 3.
Valve pocket parts 3 comprise valve sleeve body 303, valve sleeve body 303 upper cavity connects the first oil return circuit 201 in oil return circuit, valve sleeve body 303 lower cavity connects the second oil return circuit 202 in oil return circuit, is provided with oilhole 304, connects oil-feed oil circuit bottom valve sleeve body 303 in the middle part of valve sleeve body 303.Wherein oilhole 304 top is provided with steel ball 301, and oilhole 304 bottom arranges lifting pin 302 by spring 305 elasticity, and lifting pin 302 coordinates with steel ball 301 through after oilhole 304.Lifting pin 302 is preferably up-small and down-big structure, thus makes the fluctuation accepting oil pressure that its energy is sensitive.Do not have oil pressure condition bottom valve sleeve body 303 under, steel ball 301 seals oilhole 304, the first oil return circuit 201 and the second oil return circuit 202 obstructed; Have oil pressure condition bottom valve sleeve body 303 under, under the left and right of oil pressure, lifting pin 302 rises, and pushes up, thus the first oil return circuit 201 and the second oil return circuit 202 are communicated by steel ball 301.
During work, utilize the effect of pump parts 4, hydraulic oil is passed through the second oil-feed oil circuit 502 suction pump body component 4 from fuel tank 102, and injects oil cylinder 103 by the first oil-feed oil circuit 501.The steel ball 301 of valve pocket parts 3 is seal oilhole 304 under normal circumstances, thus cuts off the oil circuit between the first oil return circuit 201 and the second oil return circuit 202.Only have when entering in the first oil-feed oil circuit 501 to have hydraulic oil pressure fashionable, the pressure of lifting pin 302 near the first oil-feed oil circuit 501 side increases, thus promotion lifting pin 302 moves upward, back down steel ball 301, thus be communicated with the first oil return circuit 201 and the second oil return circuit 202, make the hydraulic oil in cylinder 104 flow back to fuel tank 102, thus realize piston rod 101 outwards jacking.Otherwise when pump parts 4 does not act on, the first oil-feed oil circuit 501 injects without hydraulic oil, and steel ball 301 seals spill port, and piston rod 101 cannot realize jacking.
Below only just preferred embodiment of the present invention is described, but can not be interpreted as it is limitations on claims.The present invention is not only confined to above embodiment, and its concrete structure allows to change.All various changes done in the protection domain of independent claims of the present invention are all in protection scope of the present invention.
Claims (4)
1. the hydrovalve of an oil return circuit band auto-lock function, comprise jacking parts (1) and pump parts (4), described jacking parts (1) comprise piston rod (101), fuel tank (102), oil cylinder (103) and middle cylinder (104), described piston rod (101) is connected with oil cylinder (103), described oil cylinder (103) and middle cylinder (104) oil circuit communicate, described fuel tank (102) and oil cylinder (103) are communicated by the oil-feed oil circuit arranged, described oil-feed oil circuit is provided with pump parts (4), described middle cylinder (104) and fuel tank (102) are communicated by the oil return circuit arranged, it is characterized in that described oil return circuit is provided with valve pocket parts (3), described valve pocket parts (3) comprise valve sleeve body (303), described valve sleeve body (303) upper cavity connects the first oil return circuit (201) in oil return circuit, described valve sleeve body (303) lower cavity connects the second oil return circuit (202) in oil return circuit, described valve sleeve body (303) middle part is provided with oilhole (304), described valve sleeve body (303) bottom connects oil-feed oil circuit, described oilhole (304) top is provided with steel ball (301), described oilhole (304) lower elastic is provided with lifting pin (302), described lifting pin (302) coordinates with steel ball (301) afterwards through oilhole (304).
2. the hydrovalve of a kind of oil return circuit band auto-lock function as claimed in claim 1, is characterized in that described oil-feed oil circuit comprises the second oil-feed oil circuit (502) be arranged between fuel tank (102) and pump parts (4) and the first oil-feed oil circuit (501) be arranged between oil cylinder (103) and pump parts (4).
3. the hydrovalve of a kind of oil return circuit band auto-lock function as claimed in claim 1, is characterized in that described lifting pin (302) is arranged in valve sleeve body (303) by spring (305) elasticity arranged.
4. the hydrovalve of a kind of oil return circuit band auto-lock function as claimed in claim 1, is characterized in that described lifting pin (302) is up-small and down-big structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410700182.3A CN104454726B (en) | 2014-11-28 | 2014-11-28 | Hydraulic valve with oil returning path with self-locking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410700182.3A CN104454726B (en) | 2014-11-28 | 2014-11-28 | Hydraulic valve with oil returning path with self-locking function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104454726A true CN104454726A (en) | 2015-03-25 |
| CN104454726B CN104454726B (en) | 2017-01-18 |
Family
ID=52901301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410700182.3A Expired - Fee Related CN104454726B (en) | 2014-11-28 | 2014-11-28 | Hydraulic valve with oil returning path with self-locking function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104454726B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763970A (en) * | 2016-12-16 | 2017-05-31 | 中国矿业大学(北京) | A kind of hydraulic valve body of composite |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB547650A (en) * | 1941-11-15 | 1942-09-04 | Charles Hyland | Improvements in or relating to hydraulic remote control apparatus |
| JPH04189298A (en) * | 1990-11-22 | 1992-07-07 | Kayaba Ind Co Ltd | Lifting hydraulic device for lift carrying truck |
| CN2177832Y (en) * | 1993-12-01 | 1994-09-21 | 钱祥生 | Integrated hydraulic power part |
| CN2285766Y (en) * | 1996-06-05 | 1998-07-08 | 吴春信 | Full-automatic jack for vehicle |
| JP2001304205A (en) * | 2000-04-18 | 2001-10-31 | Kurimoto Ltd | Hydraulic cylinder unit |
| US20040172938A1 (en) * | 2003-02-25 | 2004-09-09 | Shinn Fu Corporation | Ventilation valve of hydraulic jack |
| CN202900831U (en) * | 2012-10-17 | 2013-04-24 | 江苏博世达液压机电有限公司 | Electro-hydraulic push rod |
| CN202971412U (en) * | 2012-12-17 | 2013-06-05 | 上海当世流体动力控制设备有限公司 | Integrated miniature electro-hydraulic actuator |
| CN204386973U (en) * | 2014-11-28 | 2015-06-10 | 富阳九力机械制造有限公司 | A kind of hydrovalve of oil return circuit band auto-lock function |
-
2014
- 2014-11-28 CN CN201410700182.3A patent/CN104454726B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB547650A (en) * | 1941-11-15 | 1942-09-04 | Charles Hyland | Improvements in or relating to hydraulic remote control apparatus |
| JPH04189298A (en) * | 1990-11-22 | 1992-07-07 | Kayaba Ind Co Ltd | Lifting hydraulic device for lift carrying truck |
| CN2177832Y (en) * | 1993-12-01 | 1994-09-21 | 钱祥生 | Integrated hydraulic power part |
| CN2285766Y (en) * | 1996-06-05 | 1998-07-08 | 吴春信 | Full-automatic jack for vehicle |
| JP2001304205A (en) * | 2000-04-18 | 2001-10-31 | Kurimoto Ltd | Hydraulic cylinder unit |
| US20040172938A1 (en) * | 2003-02-25 | 2004-09-09 | Shinn Fu Corporation | Ventilation valve of hydraulic jack |
| CN202900831U (en) * | 2012-10-17 | 2013-04-24 | 江苏博世达液压机电有限公司 | Electro-hydraulic push rod |
| CN202971412U (en) * | 2012-12-17 | 2013-06-05 | 上海当世流体动力控制设备有限公司 | Integrated miniature electro-hydraulic actuator |
| CN204386973U (en) * | 2014-11-28 | 2015-06-10 | 富阳九力机械制造有限公司 | A kind of hydrovalve of oil return circuit band auto-lock function |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763970A (en) * | 2016-12-16 | 2017-05-31 | 中国矿业大学(北京) | A kind of hydraulic valve body of composite |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104454726B (en) | 2017-01-18 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170118 Termination date: 20171128 |