CN205333439U - Valve high temperature fatigue testing machine - Google Patents
Valve high temperature fatigue testing machine Download PDFInfo
- Publication number
- CN205333439U CN205333439U CN201521065351.7U CN201521065351U CN205333439U CN 205333439 U CN205333439 U CN 205333439U CN 201521065351 U CN201521065351 U CN 201521065351U CN 205333439 U CN205333439 U CN 205333439U
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- valve
- impact
- bearing
- push rod
- high temperature
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- Withdrawn - After Issue
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Abstract
The utility model discloses a valve high temperature fatigue testing machine, including valve seat insert, valve, impact loading device, valve clamping device and be used for carrying out the heating system that heats to the valve end face, strike loading device and be in including strikeing the frame and setting up assaulting eccentric wheel, push rod, belleville spring group, the driving motor on the frame and promoting the load bar that the valve was exerted pressure to valve seat insert through spiracular impact end to the valve seat insert impact while, driving motor drive eccentric wheel rotates, and the terminal surface contacts with the eccentric wheel under the push rod, and the load bar sets up above the push rod, and belleville spring organizes and installs between push rod and load bar, and valve clamping device is connected with the valve, and the valve setting is in the load bar top. The utility model discloses for a short time, great power can be applyed to spiracular impact end to the gaff characteristic of meeting an emergency of ability make full use of belleville spring group to realize quick fatigue test, and the low -angle lifting curve of eccentric wheel, power that can greatly reduced driving motor.
Description
Technical field
This utility model relates to a kind of experiment test equipment, is specifically related to a kind of valve high temperature fatigue testing machine。
Background technology
Valve, exhaust valve and valve retainer are the precise parts in engine valve actuating mechanism, and head portion that coordinates the discharge of suction and the waste gas that cylinder seals and controls fresh air with valve retainer。When the engine is running, valve retainer to stand thousands of secondary alternative cycle shock loading in per minute, under high temperature action, on valve-face, also deposition has the product of incomplete combustion, thus valve retainer subjects mechanical shock load, high temperature and combustion gas and corrodes the comprehensive function of these aspects, these comprehensive functions will directly influence the oil consumption of electromotor, service behaviour, output and service life。
Bear's valve is a kind of specific form during valve produces, and novel high-speed high-load electromotor is continuing to bring out, although original conventional tubeless valve has made intensive treatment, but can not meet needs。Electromotor only has inlet and exhaust valve to have employed hollow valve, just can ensure that and reaches high performance index。Bear's sodium filling valve has advantage highlighted below: first, reduces working temperature of valve。Bear's valve is filled with the metallic sodium accounting for cavity volume 60% in inside, and sodium melts at 97.5 DEG C, and its proportion is 0.97g/cm3。During work, sodium is in the cavities along with engine rotation makes corresponding play, and the metallic sodium of liquid promptly washes away valve retainer end face and bar portion inner chamber, valve retainer end face and cervical region heat is run through bar and outer conduit passes to cooling recirculation system。Record the hollow sodium filling valve temperature drop of employing through test and can reach 80 DEG C to 150 DEG C。Additionally, bear's valve can reduce valve quality largely。Although valve actuating mechanism is only small to the contribution of whole automotive light weight technology, but the performance of electromotor can be produced tremendous influence by it。The inertia weight of inlet and outlet door accounts for the 40% of valve actuating mechanism, and the lightweight of valve can reduce the load of valve spring, and then reduces friction loss。Alleviating of valve quality not only contributes to alleviating of overall mass, it is also possible to promotes the dynamic characteristic of valve, is favorably improved opening and closing speed and the precision controllability of valve actuating mechanism, thus promoting the performance of electromotor, reducing automobile fuel consumption and discharge。
Utility model content
For the technical problem existed in prior art, the purpose of this utility model is: provide a kind of valve high temperature fatigue testing machine。
The purpose of this utility model is achieved through the following technical solutions: a kind of valve high temperature fatigue testing machine, including valve retainer, valve, impact loading device, valve clamping device and the heating system for valve end face is heated, impact loading device includes impacting frame and being arranged on the eccentric on described impact frame, push rod, disk spring group, drive motor and promote valve to impact to valve retainer simultaneously by the impact termination of valve, valve retainer to be executed stressed load bar, drive motor drives eccentric to rotate, push rod lower surface contacts with eccentric, load bar is arranged at above push rod, disk spring group is arranged between push rod and load bar, valve clamping device is connected with valve, valve is arranged on above load bar。
Preferably, described impact loading device also includes guiding mechanism, guiding mechanism includes support bar, upper rectilinear movement bearing, lower rectilinear movement bearing and loading plate, support bar one end is fixed on impact frame, the other end is connected with loading plate, and lower rectilinear movement bearing is installed on loading plate, and upper rectilinear movement bearing is installed on impact frame, push rod cross-under is in lower rectilinear movement bearing, and load bar cross-under is in upper rectilinear movement bearing。
Preferably, push rod includes push rod main body and impacts governor motion, impacts governor motion and includes adjusting the body of rod and adjusting screw rod, and adjusting screw rod is threadedly attached to adjustment body of rod upper end, adjusting post to contact with eccentric, adjusting screw rod top is connected on the bottom of push rod main body；
Also including rolling bearing and bearing connects axle, adjust post and offer bearing groove, described rolling bearing connects axle by bearing and is installed in bearing groove, and the outer ring of rolling bearing contacts with eccentric。
Preferably, eccentric peak and minimum point difference in height are more than the distance impacted between termination and valve retainer。
Preferably, valve clamping device includes holder and impulsive force governor motion, described impulsive force governor motion includes fixed mount, impacts adjusting screw rod and valve spring, fixed mount offers threaded adjusting bore, described impact adjusting screw rod is connected in threaded adjusting bore, valve spring one end is connected to bottom impact adjusting screw rod, and the other end is connected on holder, and the valve stem of valve is installed on holder。
Preferably, described holder includes holder body, pushing tow bolt, goring push spring and pushing tow ball, holder body offers the bar groove that the valve stem for valve inserts, the wall of bar groove offers through hole, the part of the valve stem insertion rod groove of valve offers the draw-in groove snapped in for described pushing tow ball, pushing tow bolt, goring push spring and pushing tow ball may be contained within through hole, pushing tow is bolted in the aperture, outside of through hole, pushing tow ball is arranged in the aperture, inner side of through hole, and goring push spring two ends are connected respectively on pushing tow bolt and pushing tow ball。
Preferably, also include valve adjustments mechanism, described valve adjustments mechanism includes stroke adjustment frame and for regulating the stroke adjustment handwheel that described stroke adjustment frame rises or falls, stroke adjustment frame includes screw mandrel, screw, entablature, upper bearing (metal), lower bearing and regulates transverse slat, described valve retainer and valve clamping device are arranged on adjustment transverse slat, screw mandrel is connected with regulating transverse slat by described screw, screw mandrel lower end is connected on impact frame by lower bearing, screw mandrel top is connected with entablature by upper bearing (metal), and described stroke adjustment handwheel is fixed on screw mandrel top。
Preferably, also include being arranged at the valve retainer holder above the impact termination of valve, valve retainer holder includes seat ring fixture and cylinder body, valve retainer is installed on seat ring fixture, seat ring fixture is installed on cylinder body, the valve stem traverse valve retainer of valve, seat ring fixture and cylinder body are connected on valve clamping device, heating system includes hot-air blower, the hot blast conveying pipe road being connected with hot-air blower and the heater impacting termination being used for heating valve, cylinder body offers steam runner that is that be connected with hot blast conveying pipe road and that carried to valve retainer by the hot blast that hot-air blower produces。
Preferably, it is additionally provided with cooling system, described cooling system includes cooling jacket and the cooling water chamber being opened on cylinder body, described cooling water chamber is positioned at above steam runner, cooling jacket is enclosed in load bar outside wall surface, described heater is arranged at above cooling jacket, and hot blast conveying pipe road offers oil dripping mouth。
Preferably, also including device for measuring force and when valve retainer controls the control system of shutdown after damaging, described device for measuring force is arranged between load bar and disk spring group, and the data detected are sent to control system by device for measuring force。
This utility model has such advantages as relative to prior art and effect:
1, this utility model adopts eccentric to drive disk spring group to carry out the structure loaded, the big stress characteristics of small strain of disk spring group can be made full use of, the termination of impacting of valve can be applied bigger power, thus realizing rapid fatigue test, and eccentric low-angle lifting curve, it is possible to it is substantially reduced the power of drive motor。In the course of the work, the compression stress of disk spring group is less than the 40% of its design maximum, and therefore it has longer service life。Additionally, compared to adopting hydraulic loaded, it is simple and reliable for structure that mechanical type loads, parts reliability is high, also readily replaceable after fault。Visible, this utility model reliability is high, and the life-span is long, it is possible to valve retainer is tested for a long time。
2, this utility model energy well simulated engine valve operation environment is thus carrying out fatique testing at elevated temperature to valve retainer, avoid the tediously long and complicated of electromotor complete machine bench test and real engine integrated survey cycle, this utility model is capable of completing the fatigue at high temperature characteristic evaluation of valve retainer within the extremely short test period, provides reliable basis to actual production。
3, this utility model realizes the loading of impulsive force by eccentric and disk spring group, and motor speed is adjustable, it is possible to meet or exceed electromotor working speed, thus the high-frequency percussion action realized between valve and valve retainer。High frequency induction heater and hot-air blower simulate when valve moves within the engine with the contacting of valve retainer, realizing the wear test to valve under different operating situation Yu valve retainer friction pair, this utility model can control test parameter easily and reach to test out the situation that under different situations, Engine Valve Fatigue and valve retainer are worn。
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model。
Fig. 2 is the enlarged drawing in A portion in Fig. 1。
Fig. 3 is the enlarged drawing in B portion in Fig. 1。
Fig. 4 is the structural representation after valve adjustments mechanism of the present utility model raises。
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, this utility model is described in further detail, but embodiment of the present utility model is not limited to this。
Embodiment one:
A kind of valve high temperature fatigue testing machine, including valve retainer 1, valve 2, impact loading device, valve clamping device and the heating system for valve end face is heated, valve retainer is positioned at above the impact termination of valve, impact loading device includes impacting frame 3 and being arranged on the eccentric 4 on described impact frame, push rod, disk spring group 6, drive motor 7 and promote valve to impact to valve retainer simultaneously by the impact termination of valve, valve retainer to be executed stressed load bar 8, drive motor drives eccentric to rotate, push rod lower surface contacts with eccentric, load bar is arranged at above push rod, disk spring group is arranged between push rod and load bar, valve clamping device is connected with valve, valve is arranged on above load bar。
Preferably, described impact loading device also includes guiding mechanism, guiding mechanism includes support bar 9, upper rectilinear movement bearing 10, lower rectilinear movement bearing 11 and loading plate 12, support bar one end is fixed on impact frame, the other end is connected with loading plate, and lower rectilinear movement bearing is installed on loading plate, and upper rectilinear movement bearing is installed on impact frame, push rod cross-under is in lower rectilinear movement bearing, and load bar cross-under is in upper rectilinear movement bearing。
Preferably, push rod includes push rod main body 5 and impacts governor motion, impacts governor motion and includes adjusting the body of rod 13 and adjusting screw rod 14, and adjusting screw rod is threadedly attached to adjustment body of rod upper end, adjusting post to contact with eccentric, adjusting screw rod top is connected on the bottom of push rod main body。
Preferably, also including rolling bearing 15 and bearing connects axle 39, adjust post and offer bearing groove, described rolling bearing connects axle by bearing and is installed in bearing groove, and the outer ring of rolling bearing contacts with eccentric。
Preferably, valve clamping device includes holder and impulsive force governor motion, described impulsive force governor motion includes fixed mount 16, impacts adjusting screw rod 17 and valve spring 18, fixed mount offers threaded adjusting bore, described impact adjusting screw rod is connected in threaded adjusting bore, and valve spring one end is connected to bottom impact adjusting screw rod, and the other end is connected on holder, the valve stem of valve is installed on holder, impacts adjusting screw rod top and is provided with handwheel 19。
Preferably, described holder includes holder body 20, pushing tow bolt 21, goring push spring 22 and pushing tow ball 23, holder body offers the bar groove that the valve stem for valve inserts, the wall of bar groove offers through hole, the part of the valve stem insertion rod groove of valve offers the draw-in groove snapped in for described pushing tow ball, pushing tow bolt, goring push spring and pushing tow ball may be contained within through hole, pushing tow is bolted in the aperture, outside of through hole, pushing tow ball is arranged in the aperture, inner side of through hole, and goring push spring two ends are connected respectively on pushing tow bolt and pushing tow ball。
Preferably, also include valve adjustments mechanism, described valve adjustments mechanism includes stroke adjustment frame and for regulating the stroke adjustment handwheel 24 that described stroke adjustment frame rises or falls, stroke adjustment frame includes screw mandrel 25, screw 26, entablature 27, upper bearing (metal) 28, lower bearing 29 and adjustment transverse slat 30, described valve retainer and valve clamping device are arranged on adjustment transverse slat, screw mandrel is connected with regulating transverse slat by described screw, screw mandrel lower end is connected on impact frame by lower bearing, screw mandrel top is connected with entablature by upper bearing (metal), described stroke adjustment handwheel is fixed on screw mandrel top。
Preferably, also include being arranged at the valve retainer holder above the impact termination of valve, valve retainer holder includes seat ring fixture and cylinder body 31, valve retainer is installed on seat ring fixture, seat ring fixture is installed on cylinder body, fixed mount is connected on adjustment transverse slat, cylinder body is fixedly connected on adjustment transverse slat, the valve stem traverse valve retainer of valve, seat ring fixture and cylinder body are connected on valve clamping device, heating system includes hot-air blower 32, the hot blast conveying pipe road 33 being connected with hot-air blower and the heater 34 impacting termination being used for heating valve, cylinder body offers steam runner 35 that is that be connected with hot blast conveying pipe road and that carried to valve retainer by the hot blast that hot-air blower produces。Described heater is high frequency induction heater。
Preferably, being additionally provided with cooling system, described cooling system includes cooling jacket 36 and the cooling water chamber 37 being opened on cylinder body, and described cooling water chamber is positioned at above steam runner, cooling jacket is enclosed in load bar outside wall surface, and described heater is arranged at above cooling jacket。
Preferably, hot blast conveying pipe road offers oil dripping mouth 38。
Preferably, eccentric peak and minimum point difference in height are more than the distance impacted between termination and valve retainer, such as, eccentric peak and minimum point difference in height are 6mm, and impacting the distance between termination and valve retainer is 3mm, so after impact termination contacts with valve retainer, still have the loading stroke of 3mm, thus realizing the valve Impulsive load to valve retainer。
Preferably, also including device for measuring force and when valve retainer controls the control system of shutdown after damaging, described device for measuring force is arranged between load bar and disk spring group, and the data detected are sent to control system by device for measuring force。
Work process of the present utility model and operation principle: during use, drive motor band movable eccentric wheel rotates, eccentric rotates the rising of pushing tow push rod and promotes load bar to rise, valve then impacts to valve retainer under the drive of load bar, owing to eccentric peak and minimum point difference in height are more than the distance between impact termination and the valve retainer of valve, therefore, after impact termination contacts with valve retainer, eccentric still upwardly can make disk spring group start to shrink at by push rod, valve retainer is further pressed on by the termination of impacting of valve under the promotion of disk spring group, thus realizing the loading of impact once and pressure, after impact completes, load bar declines, and valve also moves down, eccentric cycle rotation makes valve by said process circulation impact valve retainer, and impact in valve retainer process at valve, hot-air blower and heater also work simultaneously, wherein, valve retainer is heated by the environment in hot-air blower simulated engine, environment for making simulation is more like with in-engine environment, oil dripping mouth on hot blast conveying pipe road can add fuel oil in a small amount, make hot blast has fuel component, make the actual condition that the environment of test is impacted as close possible to valve retainer, and the impact termination of valve is heated by heater side, make valve more like with practical situation when impacting, make test result more accurate。
Load bar and cylinder body can be cooled down by cooling jacket and cooling water chamber respectively, it is possible to the transmission of intercept heat, it is prevented that heat transmits up and down and affects the performance of other mechanisms of equipment。
Turning adjusting screw rod, adjustable push rod main body rises or falls, and makes load bar rise or fall, thus controlling the length of the displacement of valve。
After the displacement of valve is decided, valve adjustments mechanism adjustable valve contacts with load bar, it drives screw mandrel to rotate by rotational travel adjusting handle, screw on screw mandrel then drives adjustment transverse slat to move up and down, move on the valve clamping device regulated on transverse slat and cylinder body thus driving and move down, and valve clamping device also drives and moves on valve and move down, when adjusting valve, first eccentric projection is turned to lower section, it is rotated further by screw mandrel to make to contact with load bar bottom valve, completes the adjustment of valve。And when valve changed by needs, significantly adjustment transverse slat can be made to be raised to a high position by rotary screw rod, thus there being enough positions to be split out by valve。
This utility model can pass through impulsive force governor motion and adjust the valve impulsive force to valve retainer, it makes valve spring compression by turning impact adjusting screw rod or resets, thus reaching to reduce or increase the valve impulsive force to valve retainer, its principle is after valve spring is compressed, the pressure of holder is increased by valve spring, therefore, when load bar promotes valve to impact to valve retainer, need the pressure overcoming valve spring to holder, so the thrust that impulsive force is load bar of valve retainer is deducted the valve spring pressure to holder by valve, in addition, impulsive force governor motion also ensures that valve can move downward when not by load bar thrust, thus keeping valve to carry out the impact energy of valve retainer is smooth and easy, thus the accuracy of guarantee test。
And in whole process of the test; device for measuring force all to the impulsive force of valve retainer and in real time sends data to control system at detection valve in real time; and control system when detecting that unusual fluctuations occurs in impulsive force; as: when impulsive force becomes suddenly big or diminishes more than 10%, control system then controls to shut down and sound the alarm。
This utility model adopts the designing load that mechanical eccentric coordinates with disk spring group, makes full use of the big stress characteristics of small strain of disk spring group, it is possible to the impact termination of valve is applied great loading force thus realizing rapid fatigue test。Utilize eccentric low-angle lifting curve, it is possible to be substantially reduced the power of drive motor。Mechanical type loads and compensate for again the shortcoming that hydraulic loaded reliability is low, be easily generated leakage etc. simultaneously。
This utility model can be used for the fatique testing at elevated temperature of hollow valve, it is also possible in solid valve fatique testing at elevated temperature。
Above-described embodiment is this utility model preferably embodiment; but embodiment of the present utility model is also not restricted to the described embodiments; other any without departing from the change made under spirit of the present utility model and principle, modification, replacement, combination, simplification; all should be the substitute mode of equivalence, be included within protection domain of the present utility model。
Claims (10)
1. a valve high temperature fatigue testing machine, it is characterized in that: include valve retainer, valve, impact loading device, valve clamping device and the heating system for valve end face is heated, impact loading device includes impacting frame and being arranged on the eccentric on described impact frame, push rod, disk spring group, drive motor and promote valve to impact to valve retainer simultaneously by the impact termination of valve, valve retainer to be executed stressed load bar, drive motor drives eccentric to rotate, push rod lower surface contacts with eccentric, load bar is arranged at above push rod, disk spring group is arranged between push rod and load bar, valve clamping device is connected with valve, valve is arranged on above load bar。
2. valve high temperature fatigue testing machine according to claim 1, it is characterized in that: described impact loading device also includes guiding mechanism, guiding mechanism includes support bar, upper rectilinear movement bearing, lower rectilinear movement bearing and loading plate, support bar one end is fixed on impact frame, the other end is connected with loading plate, lower rectilinear movement bearing is installed on loading plate, upper rectilinear movement bearing is installed on impact frame, push rod cross-under is in lower rectilinear movement bearing, and load bar cross-under is in upper rectilinear movement bearing。
3. valve high temperature fatigue testing machine according to claim 1 and 2, it is characterized in that: push rod includes push rod main body and impacts governor motion, impact governor motion to include adjusting the body of rod and adjusting screw rod, adjusting screw rod is threadedly attached to adjustment body of rod upper end, adjusting post to contact with eccentric, adjusting screw rod top is connected on the bottom of push rod main body；
Also including rolling bearing and bearing connects axle, adjust post and offer bearing groove, described rolling bearing connects axle by bearing and is installed in bearing groove, and the outer ring of rolling bearing contacts with eccentric。
4. valve high temperature fatigue testing machine according to claim 1, it is characterised in that: eccentric peak and minimum point difference in height are more than the distance impacted between termination and valve retainer。
5. valve high temperature fatigue testing machine according to claim 1, it is characterized in that: valve clamping device includes holder and impulsive force governor motion, described impulsive force governor motion includes fixed mount, impacts adjusting screw rod and valve spring, fixed mount offers threaded adjusting bore, described impact adjusting screw rod is connected in threaded adjusting bore, valve spring one end is connected to bottom impact adjusting screw rod, and the other end is connected on holder, and the valve stem of valve is installed on holder。
6. valve high temperature fatigue testing machine according to claim 5, it is characterized in that: described holder includes holder body, pushing tow bolt, goring push spring and pushing tow ball, holder body offers the bar groove that the valve stem for valve inserts, the wall of bar groove offers through hole, the part of the valve stem insertion rod groove of valve offers the draw-in groove snapped in for described pushing tow ball, pushing tow bolt, goring push spring and pushing tow ball may be contained within through hole, pushing tow is bolted in the aperture, outside of through hole, pushing tow ball is arranged in the aperture, inner side of through hole, goring push spring two ends are connected respectively on pushing tow bolt and pushing tow ball。
7. valve high temperature fatigue testing machine according to claim 1, it is characterized in that: also include valve adjustments mechanism, described valve adjustments mechanism includes stroke adjustment frame and for regulating the stroke adjustment hands wheel that described stroke adjustment frame rises or falls, stroke adjustment frame includes screw mandrel, screw, entablature, upper bearing (metal), lower bearing and adjustment transverse slat, described valve retainer and valve clamping device are arranged on adjustment transverse slat, screw mandrel is connected with regulating transverse slat by described screw, screw mandrel lower end is connected on impact frame by lower bearing, screw mandrel top is connected with entablature by upper bearing (metal), described stroke adjustment handwheel is fixed on screw mandrel top。
8. valve high temperature fatigue testing machine according to claim 1, it is characterized in that: also include being arranged at the valve retainer holder above the impact termination of valve, valve retainer holder includes seat ring fixture and cylinder body, valve retainer is installed on seat ring fixture, seat ring fixture is installed on cylinder body, the valve stem traverse valve retainer of valve, seat ring fixture and cylinder body are connected on valve clamping device, heating system includes hot-air blower, the hot blast conveying pipe road being connected with hot-air blower and the heater impacting termination being used for heating valve, cylinder body offers steam runner that is that be connected with hot blast conveying pipe road and that carried to valve retainer by the hot blast that hot-air blower produces。
9. valve high temperature fatigue testing machine according to claim 8, it is characterized in that: be additionally provided with cooling system, described cooling system includes cooling jacket and the cooling water chamber being opened on cylinder body, described cooling water chamber is positioned at above steam runner, cooling jacket is enclosed in load bar outside wall surface, described heater is arranged at above cooling jacket, and hot blast conveying pipe road offers oil dripping mouth。
10. valve high temperature fatigue testing machine according to claim 1; it is characterized in that: also include device for measuring force and when valve retainer controls the control system of shutdown after damaging; described device for measuring force is arranged between load bar and disk spring group, and the data detected are sent to control system by device for measuring force。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521065351.7U CN205333439U (en) | 2015-12-17 | 2015-12-17 | Valve high temperature fatigue testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521065351.7U CN205333439U (en) | 2015-12-17 | 2015-12-17 | Valve high temperature fatigue testing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205333439U true CN205333439U (en) | 2016-06-22 |
Family
ID=56208210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521065351.7U Withdrawn - After Issue CN205333439U (en) | 2015-12-17 | 2015-12-17 | Valve high temperature fatigue testing machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN205333439U (en) |
Cited By (3)
| 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 |
| CN106989928A (en) * | 2017-04-10 | 2017-07-28 | 华南理工大学 | The abrasion testing device and method of testing of a kind of valve valve guide bushing friction pair |
| CN109682686A (en) * | 2019-01-31 | 2019-04-26 | 中国工程物理研究院机械制造工艺研究所 | A kind of disk spring tension and compression testing device |
-
2015
- 2015-12-17 CN CN201521065351.7U patent/CN205333439U/en not_active Withdrawn - After Issue
Cited By (6)
| 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 |
| CN106989928A (en) * | 2017-04-10 | 2017-07-28 | 华南理工大学 | The abrasion testing device and method of testing of a kind of valve valve guide bushing friction pair |
| CN106989928B (en) * | 2017-04-10 | 2019-05-14 | 华南理工大学 | A kind of abrasion testing device and test method of valve-valve guide bushing friction pair |
| CN109682686A (en) * | 2019-01-31 | 2019-04-26 | 中国工程物理研究院机械制造工艺研究所 | A kind of disk spring tension and compression testing device |
| CN109682686B (en) * | 2019-01-31 | 2023-09-19 | 中国工程物理研究院机械制造工艺研究所 | Belleville spring tension and compression test device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160622 Effective date of abandoning: 20180914 |