CN202582884U - Engine valve actuating mechanism valve rock arm load measurement test device - Google Patents
Engine valve actuating mechanism valve rock arm load measurement test device Download PDFInfo
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- CN202582884U CN202582884U CN 201220152111 CN201220152111U CN202582884U CN 202582884 U CN202582884 U CN 202582884U CN 201220152111 CN201220152111 CN 201220152111 CN 201220152111 U CN201220152111 U CN 201220152111U CN 202582884 U CN202582884 U CN 202582884U
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- actuating mechanism
- valve actuating
- valve
- dynamic strain
- motor
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Abstract
The utility model discloses an engine valve actuating mechanism valve rock arm load measurement test device. The device comprises a control cabinet, a motor, an encoder, a belt pulley, a detected valve actuating mechanism, a lubricating oil tank, a strain gauge, a dynamic strain gauge, a data acquisition card, and a host computer. The speed of the motor is controlled by the control cabinet, an output shaft of the motor drives a camshaft in the detected valve actuating mechanism to rotate, a gear end of the camshaft is installed with the encoder, and an output end of the encoder is in signal connection with an input end of the data acquisition card. The strain gauge is attached on a valve end of a valve rock arm of the detected valve actuating mechanism, an output end of the strain gauge is in signal connection with an input end of the dynamic strain gauge, an output end of the dynamic strain gauge is in signal connection with another input end of the data acquisition card, and an output end of the data acquisition card is in signal connection with the host computer. According to the utility model, only a simple test device is needed, through simulating the working state of an engine, the measurement of a load of the rock arm is completed, and an experimental requirement is satisfied.
Description
Technical field
The utility model belongs to engine detection technique field, relates to a kind of engine valve actuating mechanism valve rocker load measurement test unit.
Background technology
The engine valve actuating mechanism valve rocker is one of important movement parts in the engine valve actuating mechanism, is the critical component that transmits the valve actuating mechanism motion, influences the valve actuating mechanism performance, to the motion of valve is stressed direct influence is arranged.Especially along with the development of engine technology, valve actuating mechanism is required harsh day by day, the motion of valve rocker and stressed intensity, the reliability that not only affects rocking arm, also to stressed, the motion of valve, to work the research of taking a seat very important.Therefore, need be to the analysis that makes an experiment of valve rocker load condition.
At present, engine valve actuating mechanism rocking arm load also there is not unified test standard.Can record valve acceleration, push rod stress etc. through the overall test platform.But configuration engine experimental table complicated condition be unfavorable for that engine component producer realizes, and the stressed experimental data of the valve actuating mechanism that draws is not directly perceived to rocking arm load, and is inaccurate under the part operating mode.
Summary of the invention
The utility model purpose is to overcome the deficiency of above-mentioned technology, provides that a kind of cost is low, efficient is high, engine valve actuating mechanism valve rocker load test stabilization system intuitively comprehensively.
The utility model adopts following technical scheme:
Engine valve actuating mechanism valve rocker load test device comprises switch board, motor, scrambler, belt pulley, tested valve actuating mechanism, grease-box, foil gauge, dynamic strain indicator, data collecting card, host computer, and described tested valve actuating mechanism comprises camshaft, valve rocker and push rod.
The rotating speed of motor is controlled by switch board; The output shaft of motor rotates through the camshaft that belt pulley drives in the tested valve actuating mechanism; On described cam shaft gear end, scrambler is housed, the output terminal of scrambler is connected with an input end signal of data collecting card; Post foil gauge on the valve end of the valve rocker of tested valve actuating mechanism; Described foil gauge output terminal is connected with the input end signal of dynamic strain indicator; The output terminal of dynamic strain indicator is connected with another input end signal of data collecting card, and the output terminal of data collecting card is connected with the host computer signal; Described grease-box links to each other with the lubricated road of tested valve actuating mechanism oil inlet and outlet through oil pipe.
Compared with prior art, the beneficial effect of the utility model is:
1, the engine valve actuating mechanism valve rocker load test device that the utility model provided through the simulated engine working environment, is accomplished rocking arm load and is detected.Test can accurately record dynamic rocking arm load through method quiet, that the kinetic measurement mode combines, reaches testing requirements, the confidence level of warranty test.
2, the engine valve actuating mechanism valve rocker load test device that the utility model provided adopts the electronic signal experimental facilities, and test accuracy is high, has guaranteed the precision of test.
3, the engine valve actuating mechanism valve rocker load test device that the utility model provided through foil gauge, scrambler acquired signal, and is preserved data through host computer, and is simple to operate, continuity is strong, has improved test efficiency.
4, the engine valve actuating mechanism valve rocker load test device that the utility model provided does not need complicated engine experimental table, and is simple in structure; Experimental cost is low, and applicability is wide, convenient use for a long time; Adaptable across each auto parts and components manufacturing plant, help industry development.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model static test structural representation.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
As shown in Figure 1, engine valve actuating mechanism valve rocker load test system comprises: switch board 1, motor 2, scrambler 3, belt pulley 4, tested valve actuating mechanism 5, grease-box 6, foil gauge 7, dynamic strain indicator 8, data collecting card 9, host computer 10.
Tested valve actuating mechanism 5 links to each other with motor 2 through belt pulley 4, drives valve actuating mechanism 5 through motor 2 and rotates the simulated engine operating mode; Motor 2 rotating speeds are regulated by switch board 1, regulate motor 2 rotating speeds by the engine test requirement; Scrambler 3 is installed in tested valve actuating mechanism 5 cam shaft gear ends, obtains distribution rotating speed and angular signal; Grease-box 6 links to each other with tested valve actuating mechanism 5 lubricated road oil inlet and outlets through oil pipe, in the grease-box 6 lube oil pump is arranged, and can regulate lubricating oil charge oil pressure and flow; Foil gauge 7 sticks on the tested valve actuating mechanism rocking arm, obtains the rocking arm compliance voltage; The strain circuit other end connects dynamic strain indicator 8, and strain signal is handled; Scrambler 3 is connected data collecting card 9 with dynamic strain indicator 8, and the signal that conversion collects is also sent to host computer 10; Host computer 10 connects data collecting card 9, preserves signal and processing through data acquisition program.
As shown in Figure 2, engine valve actuating mechanism valve rocker load static test system comprises: camshaft 11, tappet 12, push rod 13, rocking arm 14, foil gauge 7, lever 15, counterweight 16, dynamic strain indicator 8.
Camshaft 11, tappet 12, push rod 13, rocking arm 14 are the mounting structure of tested valve actuating mechanism when valve not being installed; Foil gauge 7 sticks on the rocking arm 14, measures the rocking arm compliance voltage; Dynamic strain indicator 8 is connected the strain circuit other end, reads strain signal; Lever 15 horizontal positioned, an end withstand on valve actuating mechanism rocking arm valve end, and the other end is placed counterweight 16, loads to rocking arm through counterweight weight, makes rocking arm deform, and foil gauge produces corresponding compliance voltage.
The utility model engine valve actuating mechanism valve rocker load testing method comprises static demarcating test and dynamic test test.Obtain the relation between static loaded load of valve rocker and the rocking arm compliance voltage through the static demarcating test.The rocking arm dynamic strain voltage that test obtains according to dynamic test again converts and obtains dynamic rocking arm load.Test is installed in foil gauge 7 on the valve rocker 14; Measure the rocking arm compliance voltage, lever 15 horizontal positioned, an end loads counterweight 16; The other end withstands on rocking arm 14 valve ends; Change loaded load size through changing counterweight 16 weight, read rocking arm 14 compliance voltages, obtain the relation between static loaded load of valve rocker and the rocking arm compliance voltage through dynamic strain indicator 8 to rocking arm 14.The dynamic rocking arm strain data that collects through dynamic test foil gauge 7, scrambler 3 again draws dynamic rocking arm load.Its test procedure is:
Step 2, record dynamic strain indicator reading and record; On lever, load the 1kg counterweight one by one 20 times, after each the loading, record loads gross mass and dynamic strain indicator reading.After loading completion, counterweight is unloaded one by one, record loads gross mass and dynamic strain indicator reading again.
Step 3, keeping records data draw rocking arm valve thrust and the rocking arm compliance voltage concerns K through least square method,
Wherein V representes the rocking arm compliance voltage, and m representes to load gross mass, and g representes acceleration of gravity, and l representes lever ratio.
Claims (1)
1. engine valve actuating mechanism valve rocker load measurement test unit; Comprise switch board, motor, scrambler, belt pulley, tested valve actuating mechanism, grease-box, foil gauge, dynamic strain indicator, data collecting card and host computer; Described tested valve actuating mechanism comprises camshaft, valve rocker and push rod, it is characterized in that:
The rotating speed of motor is controlled by switch board; The output shaft of motor rotates through the camshaft that belt pulley drives in the tested valve actuating mechanism; On described cam shaft gear end, scrambler is housed, the output terminal of scrambler is connected with an input end signal of data collecting card;
Post foil gauge on the valve end of the valve rocker of tested valve actuating mechanism; Described foil gauge output terminal is connected with the input end signal of dynamic strain indicator; The output terminal of dynamic strain indicator is connected with another input end signal of data collecting card, and the output terminal of data collecting card is connected with the host computer signal;
Described grease-box links to each other with the lubricated road of tested valve actuating mechanism oil inlet and outlet through oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220152111 CN202582884U (en) | 2012-04-12 | 2012-04-12 | Engine valve actuating mechanism valve rock arm load measurement test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220152111 CN202582884U (en) | 2012-04-12 | 2012-04-12 | Engine valve actuating mechanism valve rock arm load measurement test device |
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| Publication Number | Publication Date |
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| CN202582884U true CN202582884U (en) | 2012-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220152111 Expired - Lifetime CN202582884U (en) | 2012-04-12 | 2012-04-12 | Engine valve actuating mechanism valve rock arm load measurement test device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620925A (en) * | 2012-04-12 | 2012-08-01 | 杭州电子科技大学 | Device and method for measurement testing of load of valve rocker of engine valve mechanism |
| CN106813924A (en) * | 2016-12-08 | 2017-06-09 | 中国北方发动机研究所(天津) | A kind of behavior of Novel diesel engine valve and cam stress measurement device |
| CN114320597A (en) * | 2021-12-16 | 2022-04-12 | 东风汽车集团股份有限公司 | Knocking abnormal sound identification system and method for engine valve actuating mechanism |
-
2012
- 2012-04-12 CN CN 201220152111 patent/CN202582884U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620925A (en) * | 2012-04-12 | 2012-08-01 | 杭州电子科技大学 | Device and method for measurement testing of load of valve rocker of engine valve mechanism |
| CN102620925B (en) * | 2012-04-12 | 2014-05-28 | 杭州电子科技大学 | Device and method for measurement testing of load of valve rocker of engine valve mechanism |
| CN106813924A (en) * | 2016-12-08 | 2017-06-09 | 中国北方发动机研究所(天津) | A kind of behavior of Novel diesel engine valve and cam stress measurement device |
| CN106813924B (en) * | 2016-12-08 | 2019-05-14 | 中国北方发动机研究所(天津) | A kind of Novel diesel engine valve behavior and cam stress measurement device |
| CN114320597A (en) * | 2021-12-16 | 2022-04-12 | 东风汽车集团股份有限公司 | Knocking abnormal sound identification system and method for engine valve actuating mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121205 Effective date of abandoning: 20140528 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20121205 Effective date of abandoning: 20140528 |
|
| RGAV | Abandon patent right to avoid regrant |