CN203443777U - Spiral spring fatigue life test device - Google Patents
Spiral spring fatigue life test device Download PDFInfo
- Publication number
- CN203443777U CN203443777U CN201320569519.2U CN201320569519U CN203443777U CN 203443777 U CN203443777 U CN 203443777U CN 201320569519 U CN201320569519 U CN 201320569519U CN 203443777 U CN203443777 U CN 203443777U
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- push rod
- cam
- camshaft
- fatigue life
- volute spring
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
A spiral spring fatigue life test device comprises a frame, a motor, a speed reducer and a cam shaft. The motor is in transmission connection with the cam shaft through the speed reducer. At least four cam units are arranged on the cam shaft at intervals. Each cam unit is composed of a cam, a push rod, a limiting bushing, a spring, a mandrel, a positioning pin and a positioning pin seat, wherein the push rod is arranged below the cam, the limiting bushing is sleeved on the push rod, the spring is sleeved on the push rod and positioned below the limiting bushing, the mandrel is fixedly connected with the lower end of the push rod, the positioning pin is arranged below the mandrel, and the positioning pin is in threaded fit connection with the positioning pin seat. The scheme provides a solution for the problem that the test device in the prior art can test only one spiral spring at a time, is low in efficiency and cannot meet the requirement of production.
Description
Technical field
The utility model belongs to testing equipment field, relates to a kind of volute spring fatigue life testing apparatus; This test unit is specially adapted to test helical spring fatigue lifetime in VVT system; Concrete is in order to determine whether volute spring level fatigue lifetime or checking volute spring can reach certain life value.
Background technology
Variable Valve Timing Technique of IC Engine (VVT, VariableValveTiming), is by controlling IO Intake Valve Opens angular advance or postponing to come adjusting air inflow quantity, few to reach slow-speed of revolution air inlet, reduces oil consumption; High rotating speed air inlet is large, increases the final purpose of power.Because it has the features such as low row, fuel-efficient, Gao Gong, in the last few years, VVT technology was widely used on modern car.VVT system is general assembles with cam shaft system combination, by the finger setting of camshaft front end phase place, combines, fastening with VVT set bolt.VVT system is mainly comprised of VVT driver and OCV Oil Control Valve (OCV).
Cam axle phase regulator (VVT driver) as the topworks of VVT mainly by: sprocket wheel, stator, rotor, lockable mechanism form.Lockable mechanism comprises again lock pin, volute spring, spring base etc.OCV Oil Control Valve (OCV) essence is a magnetic slide valve of controlling machine oil direction and flow.Mainly by: valve body (containing solenoid, control module joint etc.), guiding valve, back-moving spring etc., partly formed.
For cam axle phase regulator, during its work, first need to remove lockup state, hydraulic oil overcomes the helical spring elastic force in lockable mechanism, makes lock pin descending, and release lock shotpin hole, to reach the object of out of stock release.For OCV Oil Control Valve, its mechanics principle is mainly the rear electromagnetic force producing of solenoid energising and the balance between back-moving spring elastic force.So volute spring is being played the part of extremely important role in VVT system.So must carry out to the volute spring using in system test and the checking of some necessity.
Common volute spring demonstration test fatigue lifetime with equipment is substantially at present: by motor, reductor, connect cam driven connecting rod and move reciprocatingly to realize the structure to the compression movement of spring.Because a spring test cycle number of times reaches 1,000,000 times, and this method efficiency that once can only test a spring is too low, can not meet need of production.
Therefore, how addressing the above problem, is the content that the utility model will be studied.
Summary of the invention
The utility model provides a kind of volute spring fatigue life testing apparatus, its objective is that solving test unit in prior art once can only test a volute spring, and inefficiency can not meet the problem of production requirement.
For achieving the above object, the technical solution adopted in the utility model is: a kind of volute spring fatigue life testing apparatus, comprises frame, motor, speed reduction unit and camshaft; Described motor is in transmission connection through speed reduction unit and camshaft; On described camshaft, be interval with the cam unit of at least four; Described each cam unit is mainly comprised of cam, push rod, limiting bush, spring, push rod, register pin and location key seat; Described push rod is arranged on the below of cam, and described limiting bush is set on described push rod, and described spring is also set on push rod and is positioned at the below of limiting bush; Described push rod is fixedly connected with the lower end of push rod; Described register pin is arranged on the below of described push rod; And be connected with described location key seat threaded engagement.
Related content in technique scheme is explained as follows:
1,, in such scheme, between described speed reduction unit and camshaft, be provided with shaft coupling.
2,, in such scheme, described camshaft is provided with and approaches screw and sensor near one end of shaft coupling.
3,, in such scheme, the two ends of described camshaft are moved and are supported in described frame through bearing rotary.
4,, in such scheme, in described frame, be also provided with counter; Described counter is connected with described sensor electrical.
5,, in such scheme, described cam unit is five; Between every adjacent cam unit, between two cams, phase place angle is 72 °.
The utility model principle of work: at the trial, now volute spring to be tested is set on register pin, on counter, set test cycle number of times simultaneously, by regulating the rotational speed regulation test frequency of motor, by regulating the length of thread engagement adjusting amplitude (displacement width) between register pin and location key seat.Then turn on the power switch, whenever camshaft rotates a circle, approach screw to signal of sensor, the numerical value that counter is set subtracts one, when counter values is 0, and buncher stall, test finishes.
Because technique scheme is used, the utility model compared with prior art has following advantages:
1, because the utility model interval on camshaft arranges 5 cam unit, 5 volute springs of single sample can be placed on this equipment and test simultaneously, improved test efficiency, shortened the test period.And meet the requirement of 4 of sample minimum number in GB/T16947-2009 volute spring test specification.
2, the utility model is scientific and reasonable for structure, and cost is low, and convenience simple to operation has realized the test of helical spring fatigue lifetime effectively, to the shortening cycle, reduces costs and has a very big significance.
Accompanying drawing explanation
Accompanying drawing 1 is the utility model structural representation one;
Accompanying drawing 2 is the utility model structural representation two.
In above accompanying drawing: 1, frame; 2, motor; 3, speed reduction unit; 4, camshaft; 5, cam; 6, push rod; 7, limiting bush; 8, spring; 9, push rod; 10, register pin; 11, location key seat; 12, shaft coupling; 13, approach screw; 14, sensor; 15, bearing; 16, counter; 17, volute spring.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail:
Embodiment: as shown in Figure 1 and 2, a kind of volute spring fatigue life testing apparatus, comprises frame 1, motor 2, speed reduction unit 3 and camshaft 4; Described motor 2 is in transmission connection through speed reduction unit 3 and camshaft 4; On described camshaft 4, be interval with the cam unit of at least four; Described each cam unit is mainly comprised of cam 5, push rod 6, limiting bush 7, spring 8, push rod 9, register pin 10 and location key seat 11; Described push rod 6 is arranged on the below of cam 5, and described limiting bush 7 is set on described push rod 6, and described spring 8 is also set on push rod 6 and is positioned at the below of limiting bush 7; Described push rod 9 is fixedly connected with the lower end of push rod 6; Described register pin 10 is arranged on the below of described push rod 9; And be connected with described location key seat 7 threaded engagement.
Between described speed reduction unit 3 and camshaft 4, be provided with shaft coupling 12.
Described camshaft 4 is provided with and approaches screw 13 and sensor 14 near one end of shaft coupling 12.
The two ends of described camshaft 4 are rotatably supported in described frame 1 through bearing 15.
In described frame 1, be also provided with counter 16; Described counter 16 is electrically connected to described sensor 14.
Described cam unit is five; Between every adjacent cam unit, between two cams 5, phase place angle is 72 °.
At the trial, now volute spring to be tested 17 is set on register pin 6, on counter 16, set test cycle number of times, by regulating the rotational speed regulation test frequency of motor 2, by regulating the length of thread engagement adjusting amplitude (displacement width) between register pin 10 and location key seat 11 simultaneously.Then turn on the power switch, whenever camshaft 4 rotates a circle, approach screw 13 to 14 1 signals of sensor, the numerical value that counter 16 is set subtracts one, when counter 16 numerical value are 0, and buncher 1 stall, test finishes.
On camshaft, interval arranges five cam unit, 5 volute springs of single sample can be placed on this equipment and test simultaneously, has improved test efficiency, has shortened the test period.And meet the requirement of 4 of sample minimum number in GB/T16947-2009 volute spring test specification.
Above-described embodiment is only explanation technical conceive of the present utility model and feature, and its object is to allow person skilled in the art can understand content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences of doing according to the utility model Spirit Essence change or modify, within all should being encompassed in protection domain of the present utility model.
Claims (6)
1. a volute spring fatigue life testing apparatus, comprises frame (1), motor (2), speed reduction unit (3) and camshaft (4); Described motor (2) is in transmission connection through speed reduction unit (3) and camshaft (4); It is characterized in that: on described camshaft (4), be interval with the cam unit of at least four; Described each cam unit is mainly comprised of cam (5), push rod (6), limiting bush (7), spring (8), push rod (9), register pin (10) and location key seat (11); Described push rod (6) is arranged on the below of cam (5), and it is upper that described limiting bush (7) is set in described push rod (6), and described spring (8) is also set in the below that limiting bush (7) were gone up and be positioned to push rod (6); Described push rod (9) is fixedly connected with the lower end of push rod (6); Described register pin (10) is arranged on the below of described push rod (9); And be connected with described location key seat (11) threaded engagement.
2. volute spring fatigue life testing apparatus according to claim 1, is characterized in that: between described speed reduction unit (3) and camshaft (4), be provided with shaft coupling (12).
3. volute spring fatigue life testing apparatus according to claim 2, is characterized in that: one end of the close shaft coupling (12) of described camshaft (4) is provided with and approaches screw (13) and sensor (14).
4. volute spring fatigue life testing apparatus according to claim 1, is characterized in that: the two ends of described camshaft (4) are rotatably supported in described frame (1) through bearing (15).
5. according to the volute spring fatigue life testing apparatus described in claim 1 or 3, it is characterized in that: in described frame (1), be also provided with counter (16); Described counter (16) is electrically connected to described sensor (14).
6. volute spring fatigue life testing apparatus according to claim 1, is characterized in that: described cam unit is five; Between every adjacent cam unit, between two cams (5), phase place angle is 72 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320569519.2U CN203443777U (en) | 2013-09-14 | 2013-09-14 | Spiral spring fatigue life test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320569519.2U CN203443777U (en) | 2013-09-14 | 2013-09-14 | Spiral spring fatigue life test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203443777U true CN203443777U (en) | 2014-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320569519.2U Expired - Fee Related CN203443777U (en) | 2013-09-14 | 2013-09-14 | Spiral spring fatigue life test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203443777U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014601A (en) * | 2017-05-27 | 2017-08-04 | 奇瑞汽车股份有限公司 | Automotive suspension screw spring durability test device |
| CN107515107A (en) * | 2017-06-30 | 2017-12-26 | 中船动力研究院有限公司 | Air bleeding valve testing stand dynamic power machine formula cylinder pressure analogue means |
| CN111380672A (en) * | 2018-12-29 | 2020-07-07 | 上海齐耀系统工程有限公司 | Test device for torsional vibration damper |
| CN113916518A (en) * | 2021-09-27 | 2022-01-11 | 西安昆仑工业（集团）有限责任公司 | Cylindrical helical compression spring fatigue test clamp and using method |
-
2013
- 2013-09-14 CN CN201320569519.2U patent/CN203443777U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014601A (en) * | 2017-05-27 | 2017-08-04 | 奇瑞汽车股份有限公司 | Automotive suspension screw spring durability test device |
| CN107014601B (en) * | 2017-05-27 | 2019-09-10 | 奇瑞汽车股份有限公司 | Automotive suspension screw spring durability test device |
| CN107515107A (en) * | 2017-06-30 | 2017-12-26 | 中船动力研究院有限公司 | Air bleeding valve testing stand dynamic power machine formula cylinder pressure analogue means |
| CN111380672A (en) * | 2018-12-29 | 2020-07-07 | 上海齐耀系统工程有限公司 | Test device for torsional vibration damper |
| CN113916518A (en) * | 2021-09-27 | 2022-01-11 | 西安昆仑工业（集团）有限责任公司 | Cylindrical helical compression spring fatigue test clamp and using method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20170914 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |