CN204514740U - A kind of valve wear test unit - Google Patents
A kind of valve wear test unit Download PDFInfo
- Publication number
- CN204514740U CN204514740U CN201520210994.XU CN201520210994U CN204514740U CN 204514740 U CN204514740 U CN 204514740U CN 201520210994 U CN201520210994 U CN 201520210994U CN 204514740 U CN204514740 U CN 204514740U
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- Prior art keywords
- valve
- retainer
- test unit
- wear test
- firing chamber
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Abstract
The utility model discloses a kind of valve wear test unit, the wheelwork comprising firing chamber, valve, valve retainer and drive described valve to rotate, valve retainer is arranged in described firing chamber, described valve puts in described firing chamber through described valve retainer, in test process, the valve valve face of described valve contacts with valve retainer.The utility model had both avoided engine overall test and real engine integrated survey cycle tediously long and complicated deficiency, compensate for again hydraulic loaded and easily produce the shortcomings such as leakage, the wearing character assessment completing valve within the extremely short test period can be realized, provide reliable basis to actual production.
Description
Technical field
The utility model relates to valve wear field tests, particularly a kind of valve wear test unit.
Background technology
Within the engine, Valve-valve seat circle friction pair works in heavily stressed, high-temperature and corrosive rugged surroundings, easily weares and teares, and the rotation simultaneously when the rigging error of valve and opening and closing exacerbates again this wearing and tearing.The wearing and tearing of valve can cause the serious consequences such as valve sinking, valve clearance disappearance, gas leakage, not only reduce the power of engine, and improve fuel consumption.Therefore, the polishing machine profound influence of valve the output power of engine, burning performance and serviceable life.
Domestic and international valve wear research mainly concentrates on valve selection, valve material wearing and tearing and valve wear test aspect, wherein valve material abrasion research uses traditional fret wear testing machine to carry out usually, only for the characteristic of material itself, do not fully take into account the actual wear form of valve; And engine overall test is carried out in valve wear test usually, this just causes, and the test period is tediously long and process of the test is complicated.
The valve test unit of domestic existing employing hydraulic loaded, but there is more energy loss in the course of the work in hydraulic loading system, and more responsive to the change of temperature, easily produce leakage, simultaneous faults is difficult to diagnosis, is not easy to maintenance.
Utility model content
For the technical matters existed in prior art, the purpose of this utility model is: provide a kind of energy simulated engine working environment valve retainer to be carried out to the valve wear test unit of wear test.
The purpose of this utility model is achieved through the following technical solutions: a kind of valve wear test unit, the wheelwork comprising firing chamber, valve, valve retainer and drive described valve to rotate, valve retainer is arranged in described firing chamber, described valve puts in described firing chamber through described valve retainer, in test process, the valve valve face of described valve contacts with valve retainer.
Preferably, also comprise the electromagnetism close mechanism that the valve valve face of valve and valve retainer are kept in touch in test process, the valve stem of valve stretches out firing chamber and is connected with electromagnetism close mechanism.
Preferably, described electromagnetism close mechanism comprises magnetic support, driving stem and electromagnet armature, and described magnetic support offers through hole, and described driving stem is connected with described wheelwork through described through hole, electromagnet armature is arranged at driving stem bottom, and the lower end of driving stem is connected with the valve stem of valve.
Preferably, described electromagnetism close mechanism comprises upper reset spring, and described upper reset spring is arranged between described magnetic support and electromagnet armature.
Preferably, the lower end of described driving stem is fixedly installed the valve chuck for clamping described valve, also comprises goring push spring, and described goring push spring is arranged between described valve chuck and firing chamber.
Preferably, described magnetic support is provided with at least two electromagnetic cores, described electromagnetic core is evenly arranged in a circumferential direction centered by described through hole.
Preferably, be also provided with guide pillar and can carry out the height control frame of height control, described height control erection is placed on described guide pillar, and described wheelwork and electromagnetism close mechanism are all arranged on described height control frame.
Preferably, described firing chamber comprises air cavity, heating ring and seat ring locking plate, is provided with seat ring installation cavity in air cavity, and described valve retainer is arranged in described seat ring installation cavity, valve retainer is fixed in described seat ring installation cavity by described seat ring locking plate, and described heating ring is arranged in described air cavity.
Preferably, described firing chamber comprises upper combustion chamber and lower combustion chamber, upper combustion chamber and lower combustion chamber are respectively arranged with upper gas chamber and lower air chamber, described upper gas chamber is connected with lower air chamber and forms described air cavity, described seat ring installation cavity is arranged at described upper gas chamber top, and described seat ring locking plate is fixed on bottom described seat ring installation cavity.
Preferably, described wheelwork comprises motor, driving gear and follower gear, and described motor is connected with driving gear, and driving gear is meshed with follower gear, and described driving stem is connected on described follower gear.
The utility model has following advantage and effect relative to prior art:
1, the utility model had both avoided engine overall test and real engine integrated survey cycle tediously long and complicated deficiency, compensate for again hydraulic loaded and easily produce the shortcomings such as leakage, the wearing character assessment completing valve within the extremely short test period can be realized, provide reliable basis to actual production.
2, the utility model is simulated when valve moves within the engine and the contact of valve retainer by wheelwork, electromagnetic core and electromagnet armature, realize the wear test to Valve-valve seat circle friction pair under different operating situation, wherein, wheelwork rotarily drives the rotation of valve, more relevantly can simulate the actual motion operating mode of valve, make test result more accurate.Meanwhile, also realize the loading of the contact force between valve and valve retainer by adjusting the magnetic force size of electromagnetic core, visible the utility model can control test parameter easily and reach the situation testing out valve retainer under different situations and be worn.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of firing chamber of the present utility model.
Fig. 3 is the structural representation of valve of the present utility model.
Fig. 4 is the upward view of magnetic support of the present utility model.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment one:
A kind of valve wear test unit, the wheelwork 4 comprising firing chamber 1, valve 2, valve retainer 3 and drive described valve 2 to rotate, described wheelwork comprises motor 5, driving gear 6 and follower gear 7, described motor is connected with driving gear, driving gear is meshed with follower gear, described driving stem is connected on described follower gear, valve retainer is arranged in described firing chamber, described valve puts in described firing chamber through described valve retainer, in test process, the valve valve face of described valve contacts with valve retainer.
Preferably, also comprise the electromagnetism close mechanism that the valve valve face 8 of valve is kept in touch in test process with valve retainer, the valve stem 9 of valve stretches out firing chamber and is connected with electromagnetism close mechanism.Preferably, described electromagnetism close mechanism comprises magnetic support 10, driving stem 11 and electromagnet armature 12, described magnetic support offers through hole 26, described driving stem is connected with described wheelwork through described through hole, electromagnet armature is arranged at driving stem bottom, and the lower end of driving stem is connected with the valve stem of valve.The utility model can make valve valve face and valve retainer keep in touch in test process by electromagnetism close mechanism, concrete, inhaling electromagnet armature by magnetic support makes valve valve face be in propradation and valve valve face contacts with valve retainer all the time, even if valve retainer has worn and torn, because magnetic support continues to inhale electromagnet armature, even if so after valve retainer wearing and tearing, valve valve face still can keep and valve retainer close contact, test environment and reality are more pressed close to, further ensures the accuracy of test.
For making when off working state, electromagnet armature can depart from magnetic support smoothly, and preferably, described electromagnetism close mechanism comprises upper reset spring 13, and described upper reset spring is arranged between described magnetic support and electromagnet armature.
Preferably, described magnetic support is provided with at least two electromagnetic cores 14, described electromagnetic core is evenly arranged in a circumferential direction centered by described through hole, and described electromagnetic core can be 2,3,4,5 or more.Using aforesaid way to arrange electromagnetic core can make driving stem in through-holes can be subject to uniform magnetic force, avoids because normally working by the uneven driving stem generation bias effect that causes of magnetic force.
Preferably, the lower end of described driving stem is fixedly installed the valve chuck 15 for clamping described valve, also comprises goring push spring 16, and described goring push spring is arranged between described valve chuck and firing chamber.By means of the promotion of goring push spring, valve can be avoided to drop, goring push spring can also play the effect to valve positioning and guiding simultaneously.
For the valve adapting to differing heights uses the utility model to test, preferably, also be provided with guide pillar 17 and can carry out the height control frame 18 of height control, described height control erection is placed on described guide pillar, and described wheelwork and electromagnetism close mechanism are all arranged on described height control frame.
Preferably, described firing chamber comprises air cavity 19, heating ring 20 and seat ring locking plate 21, seat ring installation cavity is provided with in air cavity, described valve retainer is arranged in described seat ring installation cavity, valve retainer is fixed in described seat ring installation cavity by described seat ring locking plate, and described heating ring is arranged in described air cavity.Temperature during firing chamber energy simulated engine working environment of the present utility model, do not need valve and valve retainer to be placed in engine to carry out testing and can obtain the working temperature identical with engine, make test more accurately be convenient to test simultaneously, in addition chamber structure of the present utility model is simple and be easy to manufacture, and effectively can reduce manufacturing cost.
Be more convenient for for making firing chamber manufacturing, preferably, described firing chamber comprises upper combustion chamber 22 and lower combustion chamber 23, upper combustion chamber and lower combustion chamber are respectively arranged with upper gas chamber 24 and lower air chamber 25, described upper gas chamber is connected with lower air chamber and forms described air cavity, described seat ring installation cavity is arranged at described upper gas chamber top, and described seat ring locking plate is fixed on bottom described seat ring installation cavity.
The course of work of the present utility model and principle of work: the utility model can realize the wear testing of three kinds of forms, the first be valve move up and down to the wear test of Valve-valve seat circle friction pair, it is by electromagnet wicking electromagnet armature, make electromagnet armature increase thus drive valve to rise, after valve rises, the valve valve face of valve contacts with valve retainer, then, stop electromagnetic core to the attraction of electromagnet armature, under the self gravitation of electromagnet armature or under action of reset spring, electromagnet armature can move down smoothly, after valve moves down, control electromagnet wicking electromagnet armature again make electromagnet armature increase thus drive valve to rise, the valve valve face of valve is contacted again with valve retainer, by circulation said process, the valve valve face of valve and valve retainer are contacting and separating repeatedly, thus research Valve-valve seat circle friction pair only carries out the wear condition under on-off action condition.
The second is that the rotary motion of valve is to the wear test of Valve-valve seat circle friction pair, first, by electromagnet wicking electromagnet armature, make electromagnet armature increase thus drive valve to rise, after valve rises, the valve valve face of valve contacts with valve retainer, then makes the valve valve face of valve and valve retainer keep contacting.And can before the valve valve face of valve contacts with valve retainer, the valve valve face of valve when contacting with valve retainer or the valve valve face of valve contact with valve retainer after start wheelwork, wheelwork makes valve rotate by rotation of drive rod, thus the motion of research valve rotation is on the impact of Valve-valve seat circle friction pair wearing and tearing.
The third is that valve contacts with valve retainer and to be namely under closure state valve rotation in addition and to move to the wear test of Valve-valve seat circle friction pair, first, start wheelwork, wheelwork makes valve rotate by rotation of drive rod, then, by electromagnet wicking electromagnet armature, make electromagnet armature increase thus drive valve to rise, after valve rises, the valve valve face of valve contacts with valve retainer, thus record valve and contact with valve retainer under state, valve rotation motion is on the impact of Valve-valve seat circle friction pair wearing and tearing.
The contact force size that can be contacted with valve retainer by the magnetic control valve valve face strengthened or weaken electromagnetic core in above-mentioned three kinds of test processs, visible the utility model can control test parameter easily and reach the situation testing out valve retainer under different situations and be worn.
The valve of above-mentioned three kinds of test processs carries out all in a combustion chamber, firing chamber of the present utility model energy simulated engine working environment, do not need valve and valve retainer to be placed in engine to carry out testing and can obtain the working environment identical with engine, make test result more be close to reality, test result is more accurate simultaneously.
Above-described embodiment is the utility model preferably embodiment; but embodiment of the present utility model is not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection domain of the present utility model.
Claims (10)
1. a valve wear test unit, it is characterized in that: the wheelwork comprising firing chamber, valve, valve retainer and drive described valve to rotate, valve retainer is arranged in described firing chamber, described valve puts in described firing chamber through described valve retainer, in test process, the valve valve face of described valve contacts with valve retainer.
2. valve wear test unit according to claim 1, it is characterized in that: also comprise the electromagnetism close mechanism that the valve valve face of valve and valve retainer are kept in touch in test process, the valve stem of valve stretches out firing chamber and is connected with electromagnetism close mechanism.
3. valve wear test unit according to claim 2, it is characterized in that: described electromagnetism close mechanism comprises magnetic support, driving stem and electromagnet armature, described magnetic support offers through hole, described driving stem is connected with described wheelwork through described through hole, electromagnet armature is arranged at driving stem bottom, and the lower end of driving stem is connected with the valve stem of valve.
4. valve wear test unit according to claim 3, is characterized in that: described electromagnetism close mechanism comprises upper reset spring, and described upper reset spring is arranged between described magnetic support and electromagnet armature.
5. valve wear test unit according to claim 3, it is characterized in that: the lower end of described driving stem is fixedly installed the valve chuck for clamping described valve, also comprise goring push spring, described goring push spring is arranged between described valve chuck and firing chamber.
6. valve wear test unit according to claim 3, it is characterized in that: described magnetic support is provided with at least two electromagnetic cores, described electromagnetic core is evenly arranged in a circumferential direction centered by described through hole.
7. valve wear test unit according to claim 2, it is characterized in that: be also provided with guide pillar and the height control frame of height control can be carried out, described height control erection is placed on described guide pillar, and described wheelwork and electromagnetism close mechanism are all arranged on described height control frame.
8. valve wear test unit according to claim 1, it is characterized in that: described firing chamber comprises air cavity, heating ring and seat ring locking plate, seat ring installation cavity is provided with in air cavity, described valve retainer is arranged in described seat ring installation cavity, valve retainer is fixed in described seat ring installation cavity by described seat ring locking plate, and described heating ring is arranged in described air cavity.
9. valve wear test unit according to claim 8, it is characterized in that: described firing chamber comprises upper combustion chamber and lower combustion chamber, upper combustion chamber and lower combustion chamber are respectively arranged with upper gas chamber and lower air chamber, described upper gas chamber is connected with lower air chamber and forms described air cavity, described seat ring installation cavity is arranged at described upper gas chamber top, and described seat ring locking plate is fixed on bottom described seat ring installation cavity.
10. valve wear test unit according to claim 3, it is characterized in that: described wheelwork comprises motor, driving gear and follower gear, described motor is connected with driving gear, and driving gear is meshed with follower gear, and described driving stem is connected on described follower gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520210994.XU CN204514740U (en) | 2015-04-09 | 2015-04-09 | A kind of valve wear test unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520210994.XU CN204514740U (en) | 2015-04-09 | 2015-04-09 | A kind of valve wear test unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204514740U true CN204514740U (en) | 2015-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520210994.XU Expired - Fee Related CN204514740U (en) | 2015-04-09 | 2015-04-09 | A kind of valve wear test unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204514740U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807710A (en) * | 2015-04-09 | 2015-07-29 | 华南理工大学 | Valve wear test device |
| CN105865960A (en) * | 2016-05-09 | 2016-08-17 | 华南理工大学 | Valve-valve seat ring friction pair wear test method and valve-valve seat ring friction pair wear test device |
| CN111706416A (en) * | 2020-05-14 | 2020-09-25 | 浙江锋锐发动机有限公司 | Valve seat ring mounting structure, adjusting method and engine |
-
2015
- 2015-04-09 CN CN201520210994.XU patent/CN204514740U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807710A (en) * | 2015-04-09 | 2015-07-29 | 华南理工大学 | Valve wear test device |
| CN105865960A (en) * | 2016-05-09 | 2016-08-17 | 华南理工大学 | Valve-valve seat ring friction pair wear test method and valve-valve seat ring friction pair wear test device |
| CN105865960B (en) * | 2016-05-09 | 2018-09-14 | 华南理工大学 | A kind of secondary abrasion test method of Valve-valve seat circle friction and device |
| CN111706416A (en) * | 2020-05-14 | 2020-09-25 | 浙江锋锐发动机有限公司 | Valve seat ring mounting structure, adjusting method and engine |
| CN111706416B (en) * | 2020-05-14 | 2021-08-24 | 浙江锋锐发动机有限公司 | Valve seat ring mounting structure, adjusting method and engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20150729 Termination date: 20190409 |