CN104833602A - Air valve abrasion testing device - Google Patents
Air valve abrasion testing device Download PDFInfo
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- CN104833602A CN104833602A CN201510167371.3A CN201510167371A CN104833602A CN 104833602 A CN104833602 A CN 104833602A CN 201510167371 A CN201510167371 A CN 201510167371A CN 104833602 A CN104833602 A CN 104833602A
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
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Abstract
The invention discloses an air valve abrasion testing device, which comprises a frame, an air valve seat ring, a seat ring impact rod and a drive unit, a simulation combustion chamber is arranged on the frame, the air valve seat ring is arranged on the wall surface of the simulation combustion chamber, the drive unit drives the seat ring impact rod to perform reciprocating impact to the air valve seat ring. The air valve abrasion testing device solves the problems of tedious and complex test of whole engine machine and comprehensive investigation period of the engine, makes up the disadvantages of easy leakage generation during hydraulic loading, can realize the completion of the abrasion characteristic assessment of the air valve in a very short test period, and can provide reliable basis for practical production. The air valve abrasion testing device has the advantages of reasonable design and simple structure, can provide appropriate temperature and atmosphere environment for tests, and can effectively and directly realize the impact force loading.
Description
Technical field
The present invention relates to valve wear field tests, particularly a kind of valve wear proving installation.
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, the cycle 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.
Summary of the invention
For the technical matters existed in prior art, the object of the invention is: providing a kind of can simulate under engine operating environments the valve wear proving installation that valve retainer is tested.
Object of the present invention is achieved through the following technical solutions: a kind of valve wear proving installation, comprise frame, valve retainer, seat ring impact bar and drive unit, described frame has simulated combustion room, described valve retainer is arranged on the wall of described simulated combustion room, and described drive unit drives described seat ring impact bar to described valve retainer reciprocating impact.
Preferably, described seat ring impact bar comprises valve and Impulsive load bar, the valve valve face end of valve contacts with the impact end of Impulsive load bar, and during work, described drive unit drives described valve and the to-and-fro movement of Impulsive load bar to make the valve valve face of valve impact described valve retainer simultaneously.
Preferably, also comprise valve and assist closed cell, described valve assists closed cell to comprise top striking jack and valve closure spring, and described top striking jack is fixed on the valve stem of valve, described valve closure spring one end is connected with top striking jack, and the other end is connected with simulated combustion room.
Preferably, described frame is positioned at above simulated combustion room and is provided with closing spring support plate, described closing spring support plate has valve pushing tow guide, and described top striking jack is slidably connected in described pushing tow guide.
Preferably, also comprise valve and strengthen impact unit, described valve is strengthened impact unit and is comprised the impact shifting block and impact spring that are driven by described drive unit, impact on shifting block and be extended with a year rod sleeve, the promote-side of described Impulsive load bar is stretched in described year rod sleeve, described Impulsive load bar has pushing tow ring, and described impact spring one end is connected with described pushing tow ring, and the other end is connected with described impact shifting block.
Preferably, described frame is positioned at below simulated combustion room and is provided with impact spring support plate, and described impact spring support plate is provided with impact guide, and described impact shifting block is slidably connected in described impact guide.
Preferably, described impact spring comprises and promotes described Impulsive load bar and carry out the impact section of impacting and cushion stroke and valve and move down the breeze way that distance adapts.
Preferably, described drive unit comprises motor, valve camshaft, impact cam axle, driving wheel, engaged wheel and chain, described motor is connected with driving wheel, described driving wheel is connected with engaged wheel by described chain, described valve camshaft is connected with driving wheel, described engaged wheel is connected with impact cam axle, and described in the actuated by cams of valve camshaft, valve is opened, and described in the actuated by cams of described impact cam axle, Impulsive load bar moves to valve retainer.
Preferably, described simulated combustion room comprises experiment chamber, burner and draft tube, described valve retainer is arranged in described experiment chamber, burner is connected with described experiment chamber by described draft tube, also comprise exhaust gas treating device and gas outlet, described gas outlet is connected with experiment chamber, and described exhaust gas treating device is connected with gas outlet.
Preferably, the closing spring support plate that described frame comprises casing and is arranged on successively from top to bottom in described casing, upper combustion chamber's wallboard, lower combustion chamber's wallboard and impact spring support plate, corresponding closing spring support plate in described casing, impact spring support plate, the installation site of upper combustion chamber's wallboard and lower combustion chamber's wallboard is provided with grooved and embeds mouth, closing spring support plate, impact spring support plate, upper combustion chamber's wallboard and lower combustion chamber's wallboard embed mouth by described grooved and are connected in casing, wherein form described simulated combustion room between upper combustion chamber's wallboard and lower combustion chamber's wallboard.
The present invention has following advantage and effect relative to prior art:
1, the present invention had both solved engine overall test and real engine integrated survey cycle tediously long and complicated problem, 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.The present invention is reasonable in design, and structure is simple, can provide suitable temperature and atmosphere, effectively directly can realize again the loading of impulsive force for test.
2, the present invention is provided with burner and exhaust gas treating device, and be connected with experiment chamber respectively, wherein burner is tested for valve and is provided suitable working temperature and chemical atmosphere, and exhaust gas treating device then processes the work waste gas of discharging in experiment chamber, avoids contaminated environment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the enlarged drawing in A portion in Fig. 1.
Fig. 3 is the enlarged drawing in B portion in Fig. 1.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment one:
A kind of valve wear proving installation, comprise frame 1, valve retainer 2, seat ring impact bar and drive unit, described frame has simulated combustion room, described valve retainer is arranged on the wall of described simulated combustion room, and described drive unit drives described seat ring impact bar to described valve retainer reciprocating impact.
Preferably, described seat ring impact bar comprises valve 3 and Impulsive load bar 4, the valve valve face end 5 of valve contacts with the impact end 6 of Impulsive load bar, and during work, described drive unit drives described valve and the to-and-fro movement of Impulsive load bar to make the valve valve face of valve impact described valve retainer simultaneously.Preferably, the impact end of Impulsive load bar is provided with impact disc 7, and impact disc can strengthen the contact area of the impact end of Impulsive load bar and the valve valve face end of valve.
Preferably, also comprise valve and assist closed cell, described valve assists closed cell to comprise top striking jack 8 and valve closure spring 9, and described top striking jack is fixed on the valve stem of valve, described valve closure spring one end is connected with top striking jack, and the other end is connected with simulated combustion room.
Preferably, described frame is positioned at above simulated combustion room and is provided with closing spring support plate 10, described closing spring support plate has valve pushing tow guide 11, described top striking jack is slidably connected in described pushing tow guide, the smooth and easy movement of valve can be made by means of valve pushing tow guide and move into place, making process of the test more stable.
Preferably, also comprise valve and strengthen impact unit, described valve is strengthened impact unit and is comprised the impact shifting block 12 and impact spring 13 that are driven by described drive unit, impact on shifting block and be extended with a year rod sleeve 14, the promote-side of described Impulsive load bar is stretched in described year rod sleeve, described Impulsive load bar has pushing tow ring 15, and described impact spring one end is connected with described pushing tow ring, and the other end is connected with described impact shifting block.
Preferably, described frame is positioned at below simulated combustion room and is provided with impact spring support plate 16, described impact spring support plate is provided with and impacts guide 17, described impact shifting block is slidably connected in described impact guide, the smooth and easy movement of Impulsive load bar can be made by means of impact guide and move into place, making process of the test more stable.
Preferably, described impact spring comprises the impact section that the described Impulsive load bar of promotion carries out impacting and the breeze way adapting to contraction when valve moves down, described breeze way is arranged at below described impact section, wherein the elasticity coefficient of impact section is high and longer, and the elasticity coefficient of breeze way is low, the cushion stroke of breeze way and valve move down stroke distances and adapt, and can facilitate moving down of valve like this, can also ensure to have enough elastic force simultaneously.
Preferably, described drive unit comprises motor 18, valve camshaft 19, impact cam axle 20, driving wheel, engaged wheel and chain 21, described motor is connected with driving wheel, described driving wheel is connected with engaged wheel by described chain, described valve camshaft is connected with driving wheel, described engaged wheel is connected with impact cam axle, and described in the actuated by cams of valve camshaft, valve is opened, and described in the actuated by cams of described impact cam axle, Impulsive load bar moves to valve retainer.
Preferably, described simulated combustion room comprises experiment chamber 22, burner 23 and draft tube 24, and described valve retainer is arranged in described experiment chamber, and burner is connected with described experiment chamber by described draft tube.
Preferably, also comprise exhaust gas treating device 25 and gas outlet 26, described gas outlet is connected with experiment chamber, and described exhaust gas treating device is connected with gas outlet.
Preferably, described burner and exhaust gas treating device are arranged at outside described frame.
Be easier to for making the present invention manufacture and dismounting, preferably, described frame comprises casing, upper combustion chamber's wallboard 27 and lower combustion chamber's wallboard 28, described closing spring support plate, upper combustion chamber's wallboard, lower combustion chamber's wallboard and impact spring support plate are arranged in described casing from top to bottom successively, corresponding closing spring support plate in described casing, impact spring support plate, the installation site of upper combustion chamber's wallboard and lower combustion chamber's wallboard is provided with grooved and embeds mouth 29, closing spring support plate, impact spring support plate, upper combustion chamber's wallboard and lower combustion chamber's wallboard embed mouth by described grooved and are connected in casing, wherein form described simulated combustion room between upper combustion chamber's wallboard and lower combustion chamber's wallboard.
The course of work of the present invention and principle of work: in process of the test, drive driving wheel and engaged wheel that valve camshaft and impact cam axle are worked simultaneously by motor by chain simultaneously, wherein because valve camshaft and impact cam axle have contrary operating phase, namely the cam of valve camshaft points to consistent with the cam of impact cam axle at work, thus valve and Impulsive load bar can be closely cooperated to impact valve retainer.
The cam of valve camshaft rotates promotion valve and opens, and namely valve moves down, and when the cam of valve camshaft upwards rotates, under the effect of valve closure spring, valve automatically resets closed, and namely valve moves up and valve is contacted with valve retainer.
The cam of impact cam axle upwards rotates promotion Impulsive load bar and moves up as valve loads impulsive force, in addition it should be noted that because valve camshaft and impact cam axle have contrary operating phase, so valve open move down time, the cam of impact cam axle is positioned at bottom, therefore, when the promotion of Impulsive load bar by valve can move down, and when the cam promotion Impulsive load bar of impact cam axle moves up, the cam of valve camshaft is then in top and valve is in closed condition or closing process, therefore, Impulsive load bar can realize the loading of impulsive force smoothly, thus the impact of research valve is to the effect of attrition of Valve-valve seat circle friction pair.
And be add thump further, the present invention is provided with impact spring, its principle is when the cam of impact cam axle turns to upper by bottom, due to its speed, therefore impact spring can shrink and be not the direct cam promotion Impulsive load bar rising by impact cam axle, impact spring can open after shrinking instantaneously pushes Impulsive load bar to valve by impacting shifting block, thus imitates detonation in engine and promote the process that valve rushes at valve retainer instantaneously test and actual environment are more pressed close to.
When test is carried out, exhaust is discharged in experiment chamber and also makes experiment cavity temperature increase simultaneously by burner, thus simulated engine internal work environment, test and practical work process are more pressed close to, make test result more accurate, also avoid to test in engine, make process of the test easier and be easy to operation.
Exhaust gas treating device is collected the work waste gas of being discharged by experiment chamber and to be gone forward side by side row relax, avoids contaminated environment.
The present invention is connected by draft tube with burner by simulated combustion room being arranged to experiment chamber, avoiding carrying out in frame burning improve security simultaneously conveniently replaced different burner enter test.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (10)
1. a valve wear proving installation, it is characterized in that: comprise frame, valve retainer, seat ring impact bar and drive unit, described frame has simulated combustion room, described valve retainer is arranged on the wall of described simulated combustion room, and described drive unit drives described seat ring impact bar to described valve retainer reciprocating impact.
2. valve wear proving installation according to claim 1, it is characterized in that: described seat ring impact bar comprises valve and Impulsive load bar, the valve valve face end of valve contacts with the impact end of Impulsive load bar, during work, described drive unit drives described valve and the to-and-fro movement of Impulsive load bar to make the valve valve face of valve impact described valve retainer simultaneously.
3. valve wear proving installation according to claim 2, it is characterized in that: also comprise valve and assist closed cell, described valve assists closed cell to comprise top striking jack and valve closure spring, described top striking jack is fixed on the valve stem of valve, described valve closure spring one end is connected with top striking jack, and the other end is connected with simulated combustion room.
4. valve wear proving installation according to claim 3, it is characterized in that: described frame is positioned at above simulated combustion room and is provided with closing spring support plate, described closing spring support plate has valve pushing tow guide, described top striking jack is slidably connected in described pushing tow guide.
5. the valve wear proving installation according to Claims 2 or 3, it is characterized in that: also comprise valve and strengthen impact unit, described valve is strengthened impact unit and is comprised the impact shifting block and impact spring that are driven by described drive unit, impact on shifting block and be extended with a year rod sleeve, the promote-side of described Impulsive load bar is stretched in described year rod sleeve, described Impulsive load bar has pushing tow ring, and described impact spring one end is connected with described pushing tow ring, and the other end is connected with described impact shifting block.
6. valve wear proving installation according to claim 5, it is characterized in that: described frame is positioned at below simulated combustion room and is provided with impact spring support plate, described impact spring support plate is provided with impact guide, and described impact shifting block is slidably connected in described impact guide.
7. valve wear proving installation according to claim 5, is characterized in that: described impact spring comprises and promotes described Impulsive load bar and carry out the impact section of impacting and cushion stroke and valve and move down the breeze way that distance adapts.
8. valve wear proving installation according to claim 2, it is characterized in that: described drive unit comprises motor, valve camshaft, impact cam axle, driving wheel, engaged wheel and chain, described motor is connected with driving wheel, described driving wheel is connected with engaged wheel by described chain, described valve camshaft is connected with driving wheel, described engaged wheel is connected with impact cam axle, described in the actuated by cams of valve camshaft, valve is opened, and described in the actuated by cams of described impact cam axle, Impulsive load bar moves to valve retainer.
9. valve wear proving installation according to claim 1, it is characterized in that: described simulated combustion room comprises experiment chamber, burner and draft tube, described valve retainer is arranged in described experiment chamber, burner is connected with described experiment chamber by described draft tube, also comprise exhaust gas treating device and gas outlet, described gas outlet is connected with experiment chamber, and described exhaust gas treating device is connected with gas outlet.
10. valve wear proving installation according to claim 1, it is characterized in that: the closing spring support plate that described frame comprises casing and is arranged on successively from top to bottom in described casing, upper combustion chamber's wallboard, lower combustion chamber's wallboard and impact spring support plate, corresponding closing spring support plate in described casing, impact spring support plate, the installation site of upper combustion chamber's wallboard and lower combustion chamber's wallboard is provided with grooved and embeds mouth, closing spring support plate, impact spring support plate, upper combustion chamber's wallboard and lower combustion chamber's wallboard embed mouth by described grooved and are connected in casing, wherein form described simulated combustion room between upper combustion chamber's wallboard and lower combustion chamber's wallboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510167371.3A CN104833602B (en) | 2015-04-09 | 2015-04-09 | A kind of valve wear test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510167371.3A CN104833602B (en) | 2015-04-09 | 2015-04-09 | A kind of valve wear test device |
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| CN104833602A true CN104833602A (en) | 2015-08-12 |
| CN104833602B CN104833602B (en) | 2017-09-29 |
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| CN201510167371.3A Active CN104833602B (en) | 2015-04-09 | 2015-04-09 | A kind of valve wear test device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445124A (en) * | 2015-12-17 | 2016-03-30 | 华南理工大学 | Air valve high temperature fatigue testing machine |
| CN105716980A (en) * | 2016-03-24 | 2016-06-29 | 华南理工大学 | Rocker arm type 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 |
| CN106053276A (en) * | 2016-07-20 | 2016-10-26 | 华南理工大学 | Fretting wear test device and method for valve and valve seat ring |
| CN106442191A (en) * | 2016-08-15 | 2017-02-22 | 华南理工大学 | Air valve wear test device |
| CN108956146A (en) * | 2018-06-05 | 2018-12-07 | 安徽沃德气门制造有限公司 | A kind of valve heat resistance detection device |
| CN111751238A (en) * | 2020-06-28 | 2020-10-09 | 河南柴油机重工有限责任公司 | Valve wear test device and method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445124A (en) * | 2015-12-17 | 2016-03-30 | 华南理工大学 | Air valve high temperature fatigue testing machine |
| CN105445124B (en) * | 2015-12-17 | 2018-09-14 | 华南理工大学 | A kind of valve high temperature fatigue testing machine |
| CN105716980A (en) * | 2016-03-24 | 2016-06-29 | 华南理工大学 | Rocker arm type 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 |
| CN106053276A (en) * | 2016-07-20 | 2016-10-26 | 华南理工大学 | Fretting wear test device and method for valve and valve seat ring |
| CN106442191A (en) * | 2016-08-15 | 2017-02-22 | 华南理工大学 | Air valve wear test device |
| CN106442191B (en) * | 2016-08-15 | 2023-03-10 | 华南理工大学 | Valve wear test device |
| CN108956146A (en) * | 2018-06-05 | 2018-12-07 | 安徽沃德气门制造有限公司 | A kind of valve heat resistance detection device |
| CN111751238A (en) * | 2020-06-28 | 2020-10-09 | 河南柴油机重工有限责任公司 | Valve wear test device and method |
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