CN100376834C - Jamming testing cover plate of plug-in valve - Google Patents
Jamming testing cover plate of plug-in valve Download PDFInfo
- Publication number
- CN100376834C CN100376834C CNB2006100316423A CN200610031642A CN100376834C CN 100376834 C CN100376834 C CN 100376834C CN B2006100316423 A CNB2006100316423 A CN B2006100316423A CN 200610031642 A CN200610031642 A CN 200610031642A CN 100376834 C CN100376834 C CN 100376834C
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- cover plate
- valve
- plug
- reference test
- test bar
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Abstract
The present invention discloses a jamming testing cover plate for a plug-in valve, which comprises a cover plate body, wherein an oil controlling cavity which is connected with an oil controlling opening is arranged on the cover plate body, and a through hole which is communicated with an upper cavity of a valve core of the plug-in valve is also arranged on the cover plate body. A testing rod is inserted in the through hole and extends into the upper cavity of the valve core of the plug-in valve; a sealing device is arranged between the testing rod and the cover plate body, and a pressing device is arranged at the upper end of the testing rod. A balanced cavity communicated with the oil controlling cavity is formed between the sealing device and the pressing device, and the sectional area of the balanced cavity is equal to the sectional area of the bottom of the testing rod. The present invention is the jamming testing cover plate for a plug-in valve with the advantage of simple structure, and the jamming testing cover plate can be used for quickly detecting the jamming failure of the plug-in valve when arranged on the plug-in valve; thus, the time for eliminating the failure of the equipment can be saved, and the utilization rate of the equipment can be improved.
Description
Technical field
The present invention is mainly concerned with the cartridge valve field, refers in particular to a kind of jamming testing cover plate of plug-in valve.
Background technique
Generally adopt integrated system to replace the discrete component system now in the hydraulic transmission field, make cartridge valve obtain application more and more widely.Cartridge valve not only can be used as the main valve of various combination valves, but also is used for various hydraulic system as independent component increasingly extensively.Under the effect of suitable pilot pressure, cartridge valve can bring more efficiently to system, response characteristic fast and stably, and the cartridge valve system can make system circuit more terse simultaneously, and the susceptibility that pollutes is reduced, and makes system be easy to care and maintenance.Though the application of cartridge valve has above advantage, along with a large amount of uses of cartridge valve on hydraulic system, because the cartridge valve fault causes that the fault of hydraulic system also increases thereupon, especially the spool clamping stagnation problem of cartridge valve is comparatively outstanding.
As shown in Figure 5, cartridge valve of the prior art comprises cover plate 101, valve pocket 102, spool 103 and valve seat 104, and valve pocket 102 is installed in the valve seat 104, and cover plate 101 is covered on valve pocket 102 and the valve seat 104, spool 103 is inserted in the valve pocket 102, and spool 103 can slide up and down in valve pocket 102.Be equiped with pressure spring 109 in the epicoele 108 of spool 103, the two ends of pressure spring 109 link to each other with the bottom and the cover plate 101 of epicoele 108 respectively; Offer first hydraulic fluid port 105, second hydraulic fluid port 106 and control port 107 on the valve seat 104, be provided with control oil pocket 110 in the cover plate 101 and be communicated with control port 107, this control oil pocket 110 is communicated with epicoele 108; First hydraulic fluid port 105 and second hydraulic fluid port 106 are communicated with valve pocket 102 respectively, and the spool 103 and first hydraulic fluid port 105 and second hydraulic fluid port 106 form and be connected, thereby the keying of first hydraulic fluid port 105 and second hydraulic fluid port 106 is controlled.Its working principle is: when control port 107 feeds high pressure oil, high pressure oil flows in the epicoele 108 of spool 103 through control oil pocket 110, the pressure of high pressure oil can make spool 103 move down, up to first hydraulic fluid port 105 and second hydraulic fluid port 106 are shut, fluid between first hydraulic fluid port 105 and second hydraulic fluid port 106 can not be flowed, and this moment, cartridge valve was in closed condition; When the high pressure oil of control port 107 stops to feed high pressure oil, high pressure oil disappears to the pressure of spool 103, oil pressure effect lower valve core 103 at first hydraulic fluid port 105 or second hydraulic fluid port 106 will up move, away from first hydraulic fluid port 105 and second hydraulic fluid port 106, make first hydraulic fluid port 105 and second hydraulic fluid port 106 open connection fully up to spool 103.The shortcoming of this structure just is: between spool 103 and valve pocket 102 foreign matter is arranged, or during 102 distortion of spool 103, valve pocket, the clamping stagnation fault will take place in spool 103, can not move up and down freely or move up and down and to put in place, thereby cause cartridge valve to be not closed completely close or open incomplete fault.Because cartridge valve itself is to be installed in the valve seat 104, can not directly see its working condition from the outside, make the clamping stagnation fault of spool 103 be difficult to judge, even experienced engineer, also can only roughly judge the out of order cartridge valve scope of possibility from phenomenon of the failure, to judge accurately that it can only be that it is taken apart procuratorial work which cartridge valve is out of order, and like this for the system of a large amount of use cartridge valves, fixes a breakdown and will expend a large amount of time and efforts.
Summary of the invention
The technical problem to be solved in the present invention just is: at the technical problem of prior art existence, the invention provides a kind of simple in structure, be installed in the jamming testing cover plate of plug-in valve that can carry out fast detecting on the cartridge valve to the clamping stagnation fault of cartridge valve, thereby saved the time that equipment is fixed a breakdown, improved usage ratio of equipment.
In order to solve the problems of the technologies described above, the solution that the present invention proposes is: a kind of jamming testing cover plate of plug-in valve, it comprises the cover plate body, offer the control oil pocket that links to each other with set control port on the cartridge valve valve seat on the cover plate body, it is characterized in that: offer the through hole that is communicated with the epicoele of cartridge valve spool on the described cover plate body, a reference test bar is inserted in this through hole and extends in the epicoele of cartridge valve spool; Be provided with seal arrangement between reference test bar and the cover plate body, the upper end of reference test bar is provided with hold down gag, forms the counter balance pocket that is connected with the control oil pocket between sealing device and the hold down gag, and the sectional area of counter balance pocket equates with the sectional area of reference test bar bottom.
The bottom of described seal arrangement is provided with the draining chamber, and this draining chamber is communicated with ambient atmosphere or links to each other with fuel tank by pipeline.
Described hold down gag comprises by the pressing plate of screw on the cover plate body.
Described reference test bar is provided with graduation line.
Compared with prior art, advantage of the present invention just is:
1, jamming testing cover plate of plug-in valve of the present invention is simple in structure, easy and simple to handle, applied widely, can directly be installed in to be mated use on the cartridge valve.Remember that earlier reference test bar under the usual state exposes the length of hold down gag, only need then the reference test bar on the jamming testing cover plate of plug-in valve is firmly pressed, make it touch the bottom of the epicoele of cartridge valve spool, the logical pressure oil of actuator port when cartridge valve, and control port is not when being communicated with pressure oil, the cartridge valve spool will up move, and two actuator ports that utilize the cartridge valve spool to seal are communicated with.Simultaneously, up the cartridge valve spool of Yi Donging will drive reference test bar and up moves, and after the cartridge valve spool moves to limit position, observes this moment reference test bar and exposes the length of hold down gag, if with inconsistent under the usual state, then can judge the cartridge valve spool easily and be in the clamping stagnation state;
2, jamming testing cover plate of plug-in valve of the present invention is provided with the draining chamber, this draining chamber is communicated with ambient atmosphere or links to each other with fuel tank by pipeline, like this, just can avoid occurring because sealing effect is bad, occur part between reference test bar and the cover plate body and ooze dew oil, cause draining chamber oil liquid pressure to raise, reference test bar is the phenomenon of return normally;
3, offer graduation line on the reference test bar of jamming testing cover plate of plug-in valve of the present invention, make the staff can be easily go out whether normal return of reference test bar according to the position judgment of graduation line, whether the cartridge valve spool is in the clamping stagnation state.
Description of drawings
Fig. 1 is the structural representation of the present invention when the cartridge valve open mode;
Fig. 2 is the structure for amplifying schematic representation at I place among Fig. 1;
Fig. 3 is the structural representation of the present invention when the cartridge valve closed condition;
Fig. 4 is the structure for amplifying schematic representation at II place among Fig. 3;
Fig. 5 is the structural representation of cartridge valve and valve gap in the prior art.
Marginal data
1, cover plate body 2, control port
3, control oil pocket 4, reference test bar
5, counter balance pocket 6, seal arrangement
7, hold down gag 8, draining chamber
9, pressing plate 10, graduation line
11, epicoele 12, spool
13, valve seat 14, valve pocket
15, first actuator port 16, second actuator port
17, pressure spring 18, through hole
101, cover plate 102, valve pocket
103, spool 104, valve seat
105, first hydraulic fluid port 106, second hydraulic fluid port
107, control port 108, epicoele
109, pressure spring 110, control oil pocket
Embodiment
Below with reference to the drawings and specific embodiments the present invention is described in further details.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, jamming testing cover plate of plug-in valve of the present invention, it comprises cover plate body 1, offer the control oil pocket 3 that links to each other with control port 2 on the cover plate body 1, offering through hole 18, one reference test bars 4 that are communicated with the epicoele 11 of cartridge valve spool 12 on the cover plate body 1 is inserted in this through hole 18 and extends in the epicoele 11 of cartridge valve spool 12; Be provided with seal arrangement 6 between reference test bar 4 and the cover plate body 1, the upper end of reference test bar 4 is provided with hold down gag 7, form the counter balance pocket 5 that is connected with control oil pocket 3 between sealing device 6 and the hold down gag 7, the sectional area of this counter balance pocket 5 equals the sectional area of reference test bar 4 bottoms.In preferred embodiment; the bottom of sealing device 6 is provided with draining chamber 8; this draining chamber 8 is communicated with ambient atmosphere or links to each other with fuel tank by pipeline; like this; just can avoid occurring because sealing effect is bad; occur part between reference test bar 4 and the cover plate body 1 and ooze dew oil, cause draining chamber 8 hydraulic couplings to raise, cause the normally phenomenon of return of reference test bar 4.Reference test bar 4 is provided with graduation line 10, makes the staff can be easily go out whether normal return of reference test bar 4 according to the position judgment of graduation line 10, and whether cartridge valve spool 12 is in the clamping stagnation state.Hold down gag 7 comprises by the pressing plate 9 of screw on cover plate body 1, and this hold down gag 7 can prevent that reference test bar 4 from going out under high pressure and can prevent that pressure oil is revealed in the annular counter balance pocket 5, is convenient to the dismounting of reference test bar 4 simultaneously.Referring to Fig. 2 and shown in Figure 4, when the cartridge valve closed condition or during the cartridge valve opening state, the top of reference test bar 4 keeps consistent with hold down gag 7 maintenance levels respectively or slightly exceeds hold down gag 7.
Working principle: common cartridge valve comprises cover plate, valve pocket 14, spool 12 and valve seat 13, and valve pocket 14 is installed in the valve seat 13, and cover plate then is covered on valve pocket 14 and the valve seat 13, and spool 12 is inserted in the valve pocket 14, and spool 12 can slide up and down in valve pocket 14.Referring to Fig. 1 and shown in Figure 3, be equiped with pressure spring 17 in the epicoele 11 of spool 12, the two ends of pressure spring 17 link to each other with the bottom and the cover plate of epicoele 11 respectively; Offer first actuator port 15, second actuator port 16 and control port 2 on the valve seat 13.First actuator port 15 and second actuator port 16 are communicated with valve pocket 14 respectively, and the spool 12 and first actuator port 15 and second actuator port 16 form and be connected, thereby the keying of first actuator port 15 and second actuator port 16 is controlled.Control oil pocket 3 in the testing cover plate of the present invention is communicated with control port 2, this control oil pocket 3 is communicated with epicoele 11, when control port 2 feeds high pressure oil, high pressure oil flows in the epicoele 11 of spool 12 through control oil pocket 3, the pressure of high pressure oil can make spool 12 move down, up to first actuator port 15 and second actuator port 16 are shut, the fluid between first actuator port 15 and second actuator port 16 can not be flowed, this moment, cartridge valve was in closed condition; When the high pressure oil of control port 2 stops to feed high pressure oil, high pressure oil disappears to the pressure of spool 12, oil pressure effect lower valve core 12 at first actuator port 15 or second actuator port 16 will up move, away from first actuator port 15 and second actuator port 16, make first actuator port 15 and second actuator port 16 open connection fully up to spool 12.When whether needs are in the clamping stagnation state and detect spool, remember that earlier reference test bar under the usual state exposes the length of hold down gag 7 or directly remembers numerical value by graduation line 10, only need then the reference test bar on the jamming testing cover plate of plug-in valve 4 is firmly pressed, make the bottom of its epicoele that touches cartridge valve spool 12 11, first actuator port 15 and second actuator port, 16 logical pressure oils when cartridge valve, and control port 2 is not when being communicated with pressure oil, cartridge valve spool 12 will up move, and first actuator port 15 and second actuator port 16 that utilize cartridge valve spool 12 to seal are communicated with.Simultaneously, up the cartridge valve spool 12 of Yi Donging will drive reference test bar 4 and up moves, after cartridge valve spool 12 moves to limit position, observation reference test bar 4 this moment exposes the length of hold down gag 7, if with inconsistent under the usual state, then can judge cartridge valve spool 12 easily and be in the clamping stagnation state, the staff can overhaul it.
Claims (5)
1. jamming testing cover plate of plug-in valve, it comprises cover plate body (1), offer on the cover plate body (1) with cartridge valve valve seat (13) and go up the control oil pocket (3) that set control port (2) links to each other, it is characterized in that: offer the through hole (18) that is communicated with the epicoele (11) of cartridge valve spool (12) on the described cover plate body (1), a reference test bar (4) is inserted in this through hole (18) and extends in the epicoele (11) of cartridge valve spool (12); Be provided with seal arrangement (6) between reference test bar (4) and the cover plate body (1), the upper end of reference test bar (4) is provided with hold down gag (7), form the counter balance pocket (5) that is connected with control oil pocket (3) between sealing device (6) and the hold down gag (7), the sectional area of counter balance pocket (5) equates with the sectional area of reference test bar (4) bottom.
2. jamming testing cover plate of plug-in valve according to claim 1 is characterized in that: the bottom of described seal arrangement (6) is provided with draining chamber (8), and this draining chamber (8) is communicated with ambient atmosphere or links to each other with fuel tank by pipeline.
3. jamming testing cover plate of plug-in valve according to claim 1 and 2 is characterized in that: described hold down gag (7) comprises by the pressing plate (9) of screw on cover plate body (1).
4. jamming testing cover plate of plug-in valve according to claim 1 and 2 is characterized in that: described reference test bar (4) is provided with graduation line (10).
5. jamming testing cover plate of plug-in valve according to claim 3 is characterized in that: described reference test bar (4) is provided with graduation line (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100316423A CN100376834C (en) | 2006-05-12 | 2006-05-12 | Jamming testing cover plate of plug-in valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100316423A CN100376834C (en) | 2006-05-12 | 2006-05-12 | Jamming testing cover plate of plug-in valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1847710A CN1847710A (en) | 2006-10-18 |
| CN100376834C true CN100376834C (en) | 2008-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100316423A Expired - Fee Related CN100376834C (en) | 2006-05-12 | 2006-05-12 | Jamming testing cover plate of plug-in valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100376834C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400967B (en) * | 2011-11-03 | 2015-01-28 | 中联重科股份有限公司 | Fault handling method of inserted valve and inserted valve component |
| CN112145740B (en) * | 2019-06-27 | 2023-03-28 | 宝武装备智能科技有限公司 | Online monitoring and intervention device for cartridge valve |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4311296A (en) * | 1978-08-16 | 1982-01-19 | Gerd Scheffel | Cartridge element control |
| DE3740001A1 (en) * | 1987-11-25 | 1989-06-08 | Htf Hydraulik Vertriebs Gmbh | Device for controlling the flow of a liquid |
| CN1050624A (en) * | 1989-09-30 | 1991-04-10 | 权宇 | Fluid pressure and flow controlling valve implemented by pressure sensor and flow correction calculator |
| CN2114721U (en) * | 1991-05-20 | 1992-09-02 | 张剑 | Fault detecting hydraulic controlling valve |
| CN2125752U (en) * | 1992-05-30 | 1992-12-23 | 青岛液压元件厂 | Fast servo self-suction hydraulic device |
| US5873561A (en) * | 1993-07-16 | 1999-02-23 | Hydrolux S.A.R.L. | Two-port cartridge seat valve |
| US6209565B1 (en) * | 1998-10-22 | 2001-04-03 | Dtc International, Inc. | Pressure latched poppet cartridge valve |
| CN2672345Y (en) * | 2003-12-03 | 2005-01-19 | 杭州浙大德泰电液系统工程有限公司 | Main control type two-way insert valve |
| CN2745059Y (en) * | 2004-06-30 | 2005-12-07 | 宝山钢铁股份有限公司 | Four-way three-step servo valve core and valve pocket detecting device |
| CN2751169Y (en) * | 2004-11-19 | 2006-01-11 | 中国农业大学 | Hydraulic controlled reversing valve |
-
2006
- 2006-05-12 CN CNB2006100316423A patent/CN100376834C/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4311296A (en) * | 1978-08-16 | 1982-01-19 | Gerd Scheffel | Cartridge element control |
| DE3740001A1 (en) * | 1987-11-25 | 1989-06-08 | Htf Hydraulik Vertriebs Gmbh | Device for controlling the flow of a liquid |
| CN1050624A (en) * | 1989-09-30 | 1991-04-10 | 权宇 | Fluid pressure and flow controlling valve implemented by pressure sensor and flow correction calculator |
| CN2114721U (en) * | 1991-05-20 | 1992-09-02 | 张剑 | Fault detecting hydraulic controlling valve |
| CN2125752U (en) * | 1992-05-30 | 1992-12-23 | 青岛液压元件厂 | Fast servo self-suction hydraulic device |
| US5873561A (en) * | 1993-07-16 | 1999-02-23 | Hydrolux S.A.R.L. | Two-port cartridge seat valve |
| US6209565B1 (en) * | 1998-10-22 | 2001-04-03 | Dtc International, Inc. | Pressure latched poppet cartridge valve |
| CN2672345Y (en) * | 2003-12-03 | 2005-01-19 | 杭州浙大德泰电液系统工程有限公司 | Main control type two-way insert valve |
| CN2745059Y (en) * | 2004-06-30 | 2005-12-07 | 宝山钢铁股份有限公司 | Four-way three-step servo valve core and valve pocket detecting device |
| CN2751169Y (en) * | 2004-11-19 | 2006-01-11 | 中国农业大学 | Hydraulic controlled reversing valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1847710A (en) | 2006-10-18 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080326 Termination date: 20140512 |