CN102809479A - System for testing service life of parts of engine valve mechanism - Google Patents
System for testing service life of parts of engine valve mechanism Download PDFInfo
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- CN102809479A CN102809479A CN2011101472627A CN201110147262A CN102809479A CN 102809479 A CN102809479 A CN 102809479A CN 2011101472627 A CN2011101472627 A CN 2011101472627A CN 201110147262 A CN201110147262 A CN 201110147262A CN 102809479 A CN102809479 A CN 102809479A
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- engine valve
- actuating mechanism
- valve actuating
- camshaft
- axle sleeve
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Abstract
The invention discloses a system for testing the service life of parts of an engine valve mechanism. The system comprises a base, a supporting rack, a speed-regulating type driving device, an engine valve mechanism and a transmission mechanism, wherein the supporting rack, the speed-regulating type driving device and the engine valve mechanism are all fixed on the base, the speed-regulating type driving device is connected with the engine valve mechanism by the transmission mechanism and drives the engine valve mechanism. According to the system, since the engine valve mechanism is arranged on the supporting rack and is driven by the speed-regulating type driving device, an acceleration test can be carried out all parts of the engine valve mechanism at the same time in a simulated real working condition, so as to predict the service life of each part. The system is simple in structure and convenient to operate, is a set of synchronous acceleration damage test equipment capable of simulating stress environments in working conditions for a plurality of parts at the same time, and can be used for carrying out acceleration damage test on a plurality of parts in complicated stress environments.
Description
Technical field
The present invention relates to detect the testing apparatus field of part life, relate in particular to a kind of pilot system of test engine valve actuating mechanism part life.
Background technology
Fatigue damage and rubbing wear are the main failure forms of part; The inefficacy meeting of some part causes mortal injury to equipment etc., and for example the inlet and exhaust valve of engine often causes fracture failure because of fatigue damage, falls into the valve actuating mechanism that part in the cylinder can badly damaged engine; Comprise parts such as piston, cylinder and valve seating; Even can cause serious accident, therefore carry out tired research and not only have huge economic, but also have far-reaching social effect with wearing and tearing.At present; Fatigue both domestic and external and abrasion tester are of a great variety; According to type of action branches tired and wearing and tearing; Fatigue tester mainly contains contact fatigue test machine, La-La, draws-press types such as fatigue tester and fatigue bending machine; Friction wear testing machine has sliding frictional wear testing machine, rolling friction abrasion test machine and slides types such as rolling the compound friction abrasion tester, and wherein a part is to be the universal testing-machine of research object with the standard sample, and a part is to be the special-purpose testing machine of research object with the project equipment part.But at present also to the numerous parts of engine valve actuating mechanism such as camshaft, tappet, push rod, valve can its normal temperature of real simulation under operating mode receive the accelerating fatigue of force environment, abrasion tester; More do not have a kind ofly can be simultaneously carry out the synchronous acceleration damage testing equipment that simulated condition receives force environment, and can't realize the acceleration damage test of many parts complicated applied force environment a plurality of parts.
Summary of the invention
Based on above-mentioned prior art problems; Embodiment of the present invention provides a kind of pilot system of test engine valve actuating mechanism part life; Can be easily a plurality of parts of engine valve actuating mechanism be carried out accelerated test simultaneously; Thereby in the life-span of a plurality of parts of detection of engine valve actuating mechanism, realized the acceleration damage test of many parts complicated applied force environment.
The technical scheme that realizes the object of the invention is specific as follows:
The present invention provides a kind of pilot system of test engine valve actuating mechanism part life, and this system comprises: base, support bed, speed governing type drive unit, engine valve actuating mechanism and gear train;
Wherein, said support bed, speed governing type drive unit and engine valve actuating mechanism all are fixedly installed on the base;
Said speed governing type drive unit is through said gear train connection and drive said engine valve actuating mechanism.
Said system also comprises:
Pick-up unit is made up of with the thermal infrared signal processing apparatus the thermal infrared of mutual electrical connection probe, the end of probe that thermal infrared is popped one's head in for each part of said engine valve actuating mechanism.
Said thermal infrared signal processing apparatus comprises computing machine.
Said support bed is a tower structure, is made up of axle sleeve erecting frame that is provided with on underframe and the underframe and cylinder cap assembly erecting frame; The axle sleeve erecting frame is combined by two rectangle physical components spiral-locks that have half slot, and the physical components that is provided with above is provided with oil hole, and cylinder cap assembly erecting frame is arranged on axle sleeve erecting frame top.
Said engine valve actuating mechanism by axle sleeve, camshaft, tappet, push rod, shake wall, valve, spring and cylinder cap assembly and combine; Wherein, said axle sleeve is arranged on the said support bed, and the camshaft activity is installed in the said axle sleeve, and correspondence is provided with said cylinder cap assembly on the support bed of said camshaft top; Said camshaft contacts with said axle sleeve; Tappet is arranged on said camshaft top; Top, said tappet lower end is located on the said camshaft, and said tappet top connects push rod, and said push rod upper end is connected with said wall one end that shakes; The said wall other end that shakes is connected the said spring of suit on the valve with the interior valve that is provided with of said cylinder cap assembly.
Said gear train is made up of driving wheel, engaged wheel and the rubber transmission belting that is connected between the said driven wheel; Said main drive shaft is arranged on the PTO of said speed governing type drive unit, and engaged wheel is arranged on the camshaft of said engine valve actuating mechanism.
Said speed governing type drive unit adopts the speed governing type motor.
The invention has the beneficial effects as follows: through engine valve actuating mechanism is arranged on the support bed; Drive through the speed governing type drive unit; Thereby can be simultaneously each part of engine valve actuating mechanism be carried out accelerated test with the simulation real working condition, thereby detect the life-span of each part.This system architecture is simple, and is easy to operate, is a kind ofly can be simultaneously carry out the testing equipment that simulated condition receives the synchronous acceleration damage of force environment to a plurality of parts, can realize the acceleration damage test of many parts complicated applied force environment.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skill in the art; Under the prerequisite of not paying creative work, can also obtain other accompanying drawings according to these accompanying drawings.
The test system architecture synoptic diagram that Fig. 1 provides for the embodiment of the invention;
The pilot system that Fig. 2 provides for the embodiment of the invention face structural representation;
The structural representation of the support bed of the pilot system that Fig. 3 provides for the embodiment of the invention;
The side-looking structural representation of the support bed of the pilot system that Fig. 4 provides for the embodiment of the invention;
The structural representation of the engine valve actuating mechanism of the pilot system that Fig. 5 provides for the embodiment of the invention;
The structured flowchart of the pick-up unit of the pilot system that Fig. 6 provides for the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further.
The present invention provides a kind of pilot system of test engine valve actuating mechanism part life; Can realize that the complicated applied force environment of a plurality of parts of engine valve actuating mechanism being simulated actual conditions quickens damage test; Conveniently to detect the life-span of each part; Like Fig. 1, shown in 2, this system comprises: base 1, support bed 2, speed governing type drive unit 3, engine valve actuating mechanism 4 and gear train 5;
Wherein, support bed 2, speed governing type drive unit 3 and engine valve actuating mechanism 4 all are fixedly installed on the base 1; Like Fig. 3, shown in 4, support bed 2 is a tower structure, can be used as the skeleton that engine valve actuating mechanism 4 each part are installed, and is made up of cylinder cap assembly erecting frame that is provided with on underframe 21 and the underframe 21 23 and axle sleeve erecting frame 22; Axle sleeve erecting frame 22 is combined by two rectangle physical components spiral-locks that have half slot, and the superincumbent rectangle physical components of spiral-lock is provided with oil hole, with convenient oiling in the axle sleeve of engine valve actuating mechanism, makes things convenient for camshaft lubrication.
Described speed governing type drive unit 3 is through gear train 5 connections and drive described engine valve actuating mechanism 4, and engine valve actuating mechanism 4 each parts are made an experiment stress conforms to situation basically with friction characteristic and actual condition under.Speed governing type drive unit 3 adopts the speed governing type motor, not only makes things convenient for speed governing, with the operating mode of the different rotating speeds of simulated engine, and, in the process of the test, do not use fuel oil, the toxic emission when having avoided oil inflame has kept good effects of energy conservation and environmental protection.
Like Fig. 1, shown in 4, the engine valve actuating mechanism 4 in the said system by axle sleeve 40, camshaft 41, tappet 42, push rod 43, shake wall 44, valve 46, spring 45 and cylinder cap assembly 47 and combine; Wherein, said axle sleeve 40 is arranged on the said support bed 2, and camshaft 41 activities are installed in the said axle sleeve 40, and correspondence is provided with said cylinder cap assembly 47 on the support bed 2 of said camshaft 41 tops; Said camshaft 41 contacts with said axle sleeve 40; Tappet 42 is arranged on said camshaft 41 tops; Top, said tappet 42 lower ends is located on the said camshaft 41, and said tappet 42 tops connect push rod 43, and said push rod 43 upper ends are connected with said wall 44 1 ends that shake; Said wall 44 other ends that shake are connected the said spring 45 of suit on the valve 46 with the said cylinder cap assembly 47 interior valves 46 that are provided with.After each parts organic assembling, form and the structure of real engine valve actuating mechanism, part position, valve actuating mechanism that annexation is all identical.In actual the use, the control of load can realize through adjustment valve clearance (distance between rocking arm and valve end) and the strain stress sensor at the position of studying, thereby reach the purpose to the part accelerated life test.In the above-mentioned valve actuating mechanism, the branch part of fixed convex wheel shaft can adopt modular design, the adjustment of convenient processing and precision, the part 221 of locating tappet can be connected as a single entity through the part 222 of bolt and fixed convex wheel shaft (can referring to Fig. 4).
Said gear train is by driving wheel 51, engaged wheel 52 and be connected said driven wheel 51, rubber transmission belting 53 between 52 constitutes; Said driving wheel 51 is arranged on the PTO of said speed governing type drive unit 3; Engaged wheel 52 is arranged on the camshaft 41 of said engine valve actuating mechanism 4, and engaged wheel 52 is fixed by bolts on the camshaft 41.The maximum (top) speed that driven wheel 51,52 diameters are selected to reach according to power and 41 requirements of camshaft of speed governing type drive unit 3 determines; Through adopting rubber transmission belting, can guarantee under the identical transmission purpose prerequisite, omit the necessary supporting complicated lubricating system of chain belt institute, thereby realized making the cleaning of pilot system and structural easy.
For can accurately collecting each association in each parts detection; In the said system pick-up unit (see figure 5) can also be set; Constitute with the thermal infrared signal processing apparatus by the thermal infrared of mutual electrical connection probe, the end of probe that thermal infrared is popped one's head in for each part of said engine valve actuating mechanism.In the reality, pick-up unit can adopt contactless monitoring equipment, like infrared thermography etc., can the noncontact mode make real-time monitoring to each part injury state of gas distributing system.
In fact the pilot system of present embodiment is similar to the reduced form of engine valve actuating mechanism; Corresponding size coincide on the fitted position of each parts and the engine; Stress conforms to actual condition with friction characteristic basically; Replace the fuel oil of engine to drive by the speed governing type direct motor drive; Can realize the accurate control of rotating speed, revolution, the control of load can realize through the strain gauge at the adjustment valve clearance and the position of studying, be convenient to the accelerated life test and the Quantitative study of engine air distribution system part.This testing machine can be realized the true damage process simulation of the multi-section position complicated applied force environment of single part simultaneously; For example valve is when work frictionally damage except between impact fatigue damage, valve end and rocking arm; Because also there is rubbing wear in constantly rotation in self course of work between valve head sealing surface and the valve seating; Push rod also bears the bending fatigue damage except that two receives the friction of rocking arm and tappet respectively; Tappet is except that the friction of inner and push rod, and the bottom also receives the friction of cam shaft effect, and these a series of multi-form damage process can be used this pilot system simulation.This testing machine can be realized the preparation of the true stressed environmental damage sample of a plurality of parts simultaneously, comprises camshaft, tappet, push rod, valve etc.This pilot system is convenient to disassemble, and can change sample easily.Can be synchronously to new part and again finished parts carry out fatigue and the friction wear property comparison detects; Can be to the tribological property of investigating synchronously under its dry friction performance and the lubricating condition with a kind of; Can estimate the anti-attrition anti-wear effect of different additive through using the lubricating oil that adds different additive.Actual engine entity is the closed health status of each part of valve actuating mechanism in operational process that be unfavorable for monitoring; And the engine valve actuating mechanism of this pilot system is an Open architecture; Can satisfy the requirement of installing various Non-Destructive Testing sensors additional, for example use contactless thermal infrared imager and friction pairs such as camshaft, tappet, valve-valve seating are carried out the health status of the monitoring of microcell surface temperature field Changing Pattern with monitoring military service part; The two ends that the chuck of microresistivity survey appearance is clamped in push rod are used to detect the dynamic damage process of push rod; With acoustic emission probe be fixed in camshaft and axle sleeve friction pair near, be used to detect the tribological property of camshaft etc.
In sum; Pilot system of the present invention is through being arranged on engine valve actuating mechanism on the support bed; Drive through the speed governing type drive unit; Thereby can be simultaneously each part of engine valve actuating mechanism be carried out accelerated test with the simulation real working condition, and with the equipment of realizing the thermal infrared input as pick-up unit, thereby can in process of the test, accurately detect life-span of each part.Be a kind ofly can be simultaneously carry out the testing equipment that simulated condition receives the synchronous acceleration damage of force environment, have simple in structurely, easy to operate, can realize the acceleration damage test of many parts complicated applied force environment a plurality of parts.
More than be preferred embodiment of the present invention, protection scope of the present invention is not limited to these embodiment, and the technician who is familiar with the present technique field is in the present invention discloses technical scope, and the variation that can expect easily and replacement all are encompassed in the protection domain of the present invention.Therefore, protection domain of the present invention should be as the criterion with the protection domain of claims.
Claims (7)
1. the pilot system of a test engine valve actuating mechanism part life is characterized in that, this system comprises: base, support bed, speed governing type drive unit, engine valve actuating mechanism and gear train;
Wherein, said support bed, speed governing type drive unit and engine valve actuating mechanism all are fixedly installed on the base;
Said speed governing type drive unit is through said gear train connection and drive said engine valve actuating mechanism.
2. the pilot system of test engine valve actuating mechanism part life according to claim 1 is characterized in that, said system also comprises:
Pick-up unit is made up of the thermal infrared of mutual electrical connection probe and thermal infrared signal processing apparatus.
3. the pilot system of test engine valve actuating mechanism part life according to claim 2 is characterized in that, said thermal infrared signal processing apparatus comprises computing machine.
4. the pilot system of test engine valve actuating mechanism part life according to claim 1 is characterized in that, said support bed is a tower structure, is made up of axle sleeve erecting frame that is provided with on underframe and the underframe and cylinder cap assembly erecting frame; The axle sleeve erecting frame is combined by two rectangle physical components spiral-locks that have half slot, and the physical components that is provided with above is provided with oil hole, and cylinder cap assembly erecting frame is arranged on axle sleeve erecting frame top.
5. the pilot system of test engine valve actuating mechanism part life according to claim 1 is characterized in that, said engine valve actuating mechanism by axle sleeve, camshaft, tappet, push rod, shake wall, valve, spring and cylinder cap assembly and combine; Wherein, said axle sleeve is arranged on the said support bed, and the camshaft activity is installed in the said axle sleeve, and correspondence is provided with said cylinder cap assembly on the support bed of said camshaft top; Said camshaft contacts with said axle sleeve; Tappet is arranged on said camshaft top; Top, said tappet lower end is located on the said camshaft, and said tappet top connects push rod, and said push rod upper end is connected with said wall one end that shakes; The said wall other end that shakes is connected the said spring of suit on the valve with the interior valve that is provided with of said cylinder cap assembly.
6. the pilot system of test engine valve actuating mechanism part life according to claim 1; It is characterized in that; Said gear train is made up of driving wheel, engaged wheel and the rubber transmission belting that is connected between the said driven wheel; Said main drive shaft is arranged on the PTO of said speed governing type drive unit, and engaged wheel is arranged on the camshaft of said engine valve actuating mechanism.
7. the pilot system of test engine valve actuating mechanism part life according to claim 1 is characterized in that, said speed governing type drive unit adopts the speed governing type motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101472627A CN102809479A (en) | 2011-06-02 | 2011-06-02 | System for testing service life of parts of engine valve mechanism |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101472627A CN102809479A (en) | 2011-06-02 | 2011-06-02 | System for testing service life of parts of engine valve mechanism |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697782A (en) * | 2015-04-10 | 2015-06-10 | 东风汽车零部件(集团)有限公司 | Compressive testing bed for testing fatigue, durability and parameters of valve mechanism |
| CN105716979A (en) * | 2016-02-04 | 2016-06-29 | 潍柴动力股份有限公司 | Abrasion test device for cam and tappet friction pair |
| CN106768944A (en) * | 2016-12-19 | 2017-05-31 | 中铁隆昌铁路器材有限公司 | Adjustable rail snap fit part fatigue test augmentor and method |
| CN107063698A (en) * | 2016-12-30 | 2017-08-18 | 中国船舶重工集团公司第七研究所 | A kind of mechanism for testing, platform and the method for testing of the side-mounted changeable air valve of internal combustion engine |
| CN107655938A (en) * | 2017-08-31 | 2018-02-02 | 襄阳恒生源汽车零部件有限公司 | A kind of high temperature resistant detection device for auto parts |
| CN109916613A (en) * | 2019-03-29 | 2019-06-21 | 潍柴动力股份有限公司 | A kind of control method of engine cam abrasion loss test platform and platform |
| CN114295380A (en) * | 2021-12-13 | 2022-04-08 | 贵阳学院 | Engine valve mechanism test device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697782A (en) * | 2015-04-10 | 2015-06-10 | 东风汽车零部件(集团)有限公司 | Compressive testing bed for testing fatigue, durability and parameters of valve mechanism |
| CN105716979A (en) * | 2016-02-04 | 2016-06-29 | 潍柴动力股份有限公司 | Abrasion test device for cam and tappet friction pair |
| CN106768944A (en) * | 2016-12-19 | 2017-05-31 | 中铁隆昌铁路器材有限公司 | Adjustable rail snap fit part fatigue test augmentor and method |
| CN106768944B (en) * | 2016-12-19 | 2023-04-18 | 中铁隆昌铁路器材有限公司 | Adjustable steel rail buckle fitting fatigue test stress application device and method |
| CN107063698A (en) * | 2016-12-30 | 2017-08-18 | 中国船舶重工集团公司第七研究所 | A kind of mechanism for testing, platform and the method for testing of the side-mounted changeable air valve of internal combustion engine |
| CN107063698B (en) * | 2016-12-30 | 2023-06-16 | 中国船舶集团有限公司第七一一研究所 | Testing mechanism, platform and testing method for side-mounted variable valve of internal combustion engine |
| CN107655938A (en) * | 2017-08-31 | 2018-02-02 | 襄阳恒生源汽车零部件有限公司 | A kind of high temperature resistant detection device for auto parts |
| CN107655938B (en) * | 2017-08-31 | 2019-09-13 | 襄阳恒生源汽车零部件有限公司 | A kind of high temperature resistant detection device for auto parts |
| CN109916613A (en) * | 2019-03-29 | 2019-06-21 | 潍柴动力股份有限公司 | A kind of control method of engine cam abrasion loss test platform and platform |
| CN114295380A (en) * | 2021-12-13 | 2022-04-08 | 贵阳学院 | Engine valve mechanism test device |
| CN114295380B (en) * | 2021-12-13 | 2024-04-19 | 贵阳学院 | Engine valve mechanism test device |
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Application publication date: 20121205 |