CN103207069A - Fatigue test device and method for torsional damping springs of clutch - Google Patents
Fatigue test device and method for torsional damping springs of clutch Download PDFInfo
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- CN103207069A CN103207069A CN2013101009009A CN201310100900A CN103207069A CN 103207069 A CN103207069 A CN 103207069A CN 2013101009009 A CN2013101009009 A CN 2013101009009A CN 201310100900 A CN201310100900 A CN 201310100900A CN 103207069 A CN103207069 A CN 103207069A
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Abstract
The invention discloses a fatigue test device and method for torsional damping springs of a clutch. The fatigue test device is provided with a pair of swinging arms and adjusting screws of the swinging arms. The swinging arms are hinged with a fulcrum shaft screw mounted on a base to enable the swinging arms to swing around the hinge center, the two swinging arms are connected into a whole through the adjusting screws, and a swinging end of one of the swinging arms is hinged with a power rod of a reciprocating moving mechanism and provides swinging force. When a fatigue test for the damping springs is performed, the two tested springs are symmetrically mounted on a base test apparatus respectively, the adjusting screws of the swinging arms are adjusted to enable the swinging arms to swing downwards for an angle of 0.5 alpha to be pre-compressed, and the reciprocating moving mechanism is started to enable the swinging arms to swing for an angle of alpha to perform a pressure and bending moment composite stress test on the tested springs. According to the fatigue test device and method, the stress and bending process of the tested springs is similar to the stress and bending process of the damping springs of the clutch during working, so that stress conditions of the damping springs during working can be reflected accurately, and accurate test results can be obtained.
Description
Technical field
The present invention relates to the test unit of automobile clutch, especially the fatigue experimental device of automobile clutch torsion damping spring.The invention still further relates to the test method of automobile clutch shock-absorbing spring torsional fatigue device.
Background technology
At present both at home and abroad the clutch plate torsional vibration damper of automobile clutch all adopts cylindrical spring to be assemblied in structure in the window of two damping disk(-isc)s and dish hub as shock-absorbing spring usually, two damping disk(-isc)s are connected as one with rivet and other part, damping disk(-isc) can relatively rotate around the X-X axle with the dish hub, be that damping disk(-isc) can relatively rotate around the X-X axle respectively with the window that coils hub, when two windows relatively rotate, because shortening with dish hub window one lateral extent, damping disk(-isc) window one side compresses shock-absorbing spring, at the window of damping disk(-isc) and dish hub not in relative rotation under the situation, the both ends of the surface of shock-absorbing spring are parallel, and shock-absorbing spring is not stressed at this moment or only bears very little precompression.Only can make the compression test of axis direction to the torture test of this shock-absorbing spring in the past, but in fact, when damping disk(-isc) to rotate clockwise, when damping disk(-isc) rotates a α angle with respect to dish hub window, shock-absorbing spring not only both ends of the surface centre distance diminishes, both ends of the surface are also not parallel simultaneously, and shock-absorbing spring also bears moment of flexure when being stressed at this moment; When damping disk(-isc) rotated counterclockwise, the window of damping disk(-isc) and dish hub angle in relative rotation was β, and this moment, shock-absorbing spring also can shorten with not parallel because above-mentioned effect makes the both ends of the surface distance, and shock-absorbing spring equally also bears pressure and moment of flexure.In this course, the α angle is usually more than or equal to the β angle, when just damping disk(-isc) clockwise rotates the α angle, and the pressure that shock-absorbing spring bears and moment of flexure maximum, so with the torture test condition of this stress as shock-absorbing spring, the actual loading situation of ability true reappearance shock-absorbing spring.
And in existing shock-absorbing spring fatigue rig and method, shock-absorbing spring is installed between two flat boards of testing equipment, the circulating pressure that applies by flat board makes shock-absorbing spring be compressed to test highly from free height by parallel repeatedly, the compressed distance in both ends of the surface center was suitable when this height was worked with shock-absorbing spring usually, but this class test shock-absorbing spring only is stressed, be not subjected to the moment of flexure effect, and testing equipment does not have the moment test function yet, the shock-absorbing spring actual loading situation of this test method and clutch driven disk for automobile torsional vibration damper is not inconsistent, the actual forced status that can not reflect shock-absorbing spring, therefore this testing equipment and mode can not draw comparatively correct test findings and authentic and valid data.
Summary of the invention
A kind of clutch coupling torsion damping spring fatigue test device that The present invention be directed to existing in prior technology problem and defective and propose, this device can not only carry out the test of shock-absorbing spring pressured state, can also allow simultaneously shock-absorbing spring present stress when being subjected to moment of flexure, effectively the composite force situation of simulated clutch clutch plate vibration damper torsion damping spring.Another technical matters that will solve of the present invention provides the method for utilizing this test unit to carry out the torture test of clutch coupling shock-absorbing spring in addition.
For solving the problems of the technologies described above, clutch coupling shock-absorbing spring fatigue experimental device provided by the invention comprises a secondary swing arm and adjusting screw(rod), base, spring base, fulcrum screw rod and gasket ring etc., wherein two swing arms relatively are contained on the fulcrum screw rod by hinge, fulcrum screw rod and a gasket ring that is used for the allotment height then are fixedly installed in base with nut, and described spring base is installed on the base that is under two swing arms symmetrically; Adjusting screw(rod) is then by being connected as a single entity with hinged two swing arms that make of the swinging end of two swing arms, and pivot angle is adjusted by adjusting screw(rod) under the precompressed of two swing arms.For swing provides required power to swing arm, clutch coupling torsion damping spring fatigue test device of the present invention is furnished with reciprocating type strut and tie motion, and arbitrary swinging end of the strut and tie of this motion and two swing arms is hinged.
Be the stressed live telecast of simulation shock-absorbing spring in vibration damper, the test method of clutch coupling torsion damping spring fatigue test device of the present invention comprises following step: will be packed in the spring base of test unit base for two shock-absorbing springs of test symmetrically 1., and make shock-absorbing spring axle center to the distance of swing arm oscillation centre equal shock-absorbing spring axle center in the damping disk(-isc) to the damping disk(-isc) rotation axis distance, the fastening bolt of locking spring seat afterwards, select suitable gasket ring thickness to make two swing arms can place two shock-absorbing springs upper end respectively, tighten the set nut of fulcrum screw rod then, make two swing arms pressing two shock-absorbing springs respectively; 2. adjustment connects the adjusting screw(rod) length between two swing arms, makes two swing arms around the difference bottom 0.5 α angle, hinge axle center, allows two shock-absorbing springs be compressed in advance; 3. start the reciprocating mechanism of assembling, the strut and tie that makes motion imposes circulating pressure and pulling force to a swinging end of swing arm, and swing arm is swung back and forth, thereby makes shock-absorbing spring be presented on force-bearing situation in the clutch damper.In the middle of this, the pressure rod stroke of motion must equal swing arm and swing the required vertical height in 0.5 α angle, when the shock-absorbing spring of either side is returned to free height, make the shock-absorbing spring both ends of the surface centre distance of opposite side be compressed to the test height, and the pivot angle of this side-sway swing arm also reaches the α angle of testing requirements, vice versa, and so circulation, takes place because of the situation that decrease of fatigue strength causes elastic force to lose efficacy until the torture test number of times of finishing regulation or tested spring.
In test unit of the present invention and method, because vertically arranged shock-absorbing spring is to be subjected to the effect of swing arm arc pendulum, they also bear corresponding moment of flexure when bearing pressure, and pressurized and BENDING PROCESS and the clutch coupling shock-absorbing spring pressurized when work is similar process by bending, therefore can more accurately reflect the pressurized of shock-absorbing spring when work situation by bending, this has improved the accuracy of test greatly, and is significant to the torture test of clutch coupling shock-absorbing spring.
Another advantage of the present invention is that energy consumption is less: after two shock-absorbing springs are by precompression, the swing arm swing is when the shock-absorbing spring of a side is further compressed the α angle from precompression 0.5 α angle, the shock-absorbing spring of an other side then is bound to free height from compressed 0.5 α angular convolution, this part elastic energy can obtain utilizing in swing, and the resilience elastic force of entire test can all can be utilized, and therefore can effectively reduce the energy consumption of process of the test.
Description of drawings
Below in conjunction with drawings and embodiments and method the present invention is described in further detail.
Fig. 1 is the stress figure of existing clutch coupling damping disk(-isc) shock-absorbing spring when coiling the hub window at work relatively and clockwise rotating the α angle.
The stress figure of Fig. 2 shock-absorbing spring that is existing clutch coupling when damping disk(-isc) coils the hub window relatively and rotates counterclockwise the β angle.
Fig. 3 is that the master of clutch coupling torsion damping spring fatigue test device of the present invention looks synoptic diagram.
Fig. 4 be test unit of the present invention method step 2. in the synoptic diagram of adjusting screw(rod) with the two swing arm bottoms, 0.5 α angle.
Fig. 5 and Fig. 6 tested spring stress constitutional diagram when method step imposes circulating pressure to swing arm in 3. that is respectively test unit of the present invention.
Embodiment
According to clutch coupling torsion damping spring fatigue test device shown in Figure 3, its swing arm 1,3 make straight Z-shaped structure, swing arm 1,3 two ends all have hinge hole, with a hinge axis 8 they relatively are contained on the fulcrum screw rod 7, fulcrum screw rod 7 and the gasket ring 6 usefulness nuts 10 that are used for the allotment height are fixedly mounted on base 5, adjusting screw(rod) 2 by with two swing arms 1, the hinged swing arm 1 that makes of 3 swinging end, 3 are connected as a single entity, and adjust them to pivot angle under the precompressed of shock-absorbing spring by adjusting screw(rod) 2, be positioned at swing arm 1, install described spring base 4 on the base 5 under 3 symmetrically.Clutch coupling shock-absorbing spring crane torsion test device of the present invention adopts reciprocating type strut and tie motion supporting for it, and is when matching that the strut and tie 11 of motion is hinged with the arbitrary swinging end in the swing arm 1,3, so that swing arm 1, the required power of 3 swings to be provided.
Arrive process shown in Figure 6 according to Fig. 3, the test method of clutch coupling torsion damping spring fatigue test device of the present invention has following step: (1) will be packed in the spring base 4 of test unit base 5 symmetrically for two shock-absorbing springs of test, make the shock-absorbing spring axle center to swing arm 1 during installation, the distance of 3 oscillation centres equal damping disk(-isc) medi-spring axle center to the damping disk(-isc) rotation axis distance, the set bolt of fastening spring base 4 afterwards, select suitable gasket ring 6 thickness to make two swing arms 1,3 just in time place the shock-absorbing spring upper end respectively, tighten the set nut 10 of fulcrum screw rod 7 then, make swing arm 1, the 3 difference tested springs of pressing (as Fig. 3); (2) adjust to connect two swing arms 1,3 adjusting screw(rod) 2 length, make two swing arms 1,3 around hinge axis 8 bottom 0.5 α angle together, allow two shock-absorbing springs earlier by precompression (as Fig. 4); (3) start reciprocating mechanism, impose circulating pressure and pulling force by 11 pairs of swing arms 1 of strut and tie of motion, a swinging end of 3, two swing arms 1,3 are swung back and forth, thereby make tested spring be presented on force-bearing situation in the vibration damper.In this process, pressure pull bar 11 strokes of reciprocating mechanism equal swing arm 1, the required vertical height in 3 swing 0.5 α angles, when the shock-absorbing spring in the left side returns to free height, the shock-absorbing spring both ends of the surface centre distance on right side can be compressed to the test height, and the pivot angle of right side swing arm 3 also reaches the α angle of testing requirements at this moment; And when the shock-absorbing spring both ends of the surface centre distance in left side is compressed to the test height, the pivot angle of left side swing arm 1 equally also reaches the desired α of test angle, this moment, the shock-absorbing spring on right side returned to free height (as Fig. 5 Fig. 6) again, and so circulation, take place because of the situation that decrease of fatigue strength causes elastic force to lose efficacy until the torture test number of times of finishing regulation or tested spring.Swing arm 1 among the present invention, 3 angle of oscillation α determine according to the designing requirement of clutch plate, are generally 3o～25o.The size at the α angle of testing requirements is consistent with the designing requirement of clutch plate
Test unit of the present invention is not limited to said structure and method, and this test unit can also have the various deformation structure, replaces straight Z-shaped swing arm 1 of the present invention, 3 as adopt the straight-bar type fork in device; Replace fulcrum screw rod 7 with rotation axis in the middle of the fork or test the pretension of bolt by the base 5 that elevating mechanism is arranged; Use cam mechanism to make fork or swing arm 1,3 oscillatory forces; Or replacing adjusting screw(rod) 2 etc. with no adjusting screw(rod) (only its two ends are threaded and grip nut), these deformed configurations all should belong to scope of the present invention with similar mechanism and similar test method.
Claims (4)
1. clutch coupling torsion damping spring fatigue test device, it comprises two swing arms and adjusting screw(rod), base, spring base, fulcrum screw rod and gasket ring, it is characterized in that: described two swing arms (1,3) relatively are contained on the fulcrum screw rod (7) by hinge axis (8), this fulcrum screw rod (7) and a gasket ring (6) that is used for the allotment height are fixedly mounted on base (5) with nut (10), on the base (5) that is under the swing arm (1,3) described spring base (4) are installed symmetrically; Described adjusting screw(rod) (2) is by being connected as a single entity with hinged two swing arms (1,3) that make of the swinging end of two swing arms (1,3), and pivot angle is adjusted by adjusting screw(rod) (2) under the precompressed of two swing arms (1,3).
2. clutch coupling torsion damping spring fatigue test device according to claim 1, it is characterized in that: the arbitrary swinging end in two swing arms (1,3) and the strut and tie (11) of a reciprocating mechanism are hinged.
3. test method according to claim 1 or 2 described clutch coupling torsion damping spring fatigue test devices, it is characterized in that following step: 1. will be packed in the spring base (4) of test unit base (5) for two shock-absorbing springs of test symmetrically, make the shock-absorbing spring axle center to swing arm (1, the distance of oscillation centre 3) equal shock-absorbing spring axle center in the damping disk(-isc) to the damping disk(-isc) rotation axis distance, tighten the fastening bolt of spring base (4) afterwards, select suitable gasket ring (6) thickness to make two swing arms (1,3) can place two shock-absorbing springs upper end respectively, lock the nut (10) of fulcrum screw rod (7) then, make two swing arms (1,3) difference pressing two shock-absorbing springs; 2. adjustment connects adjusting screw(rod) (2) length between two swing arms (1,3), makes two swing arms (1,3) around hinge axis (8) the difference bottom 0.5 α angle, makes two shock-absorbing springs compressed in advance; 3. open described reciprocating mechanism, by the strut and tie (11) of motion one swinging end of swing arm (1,3) is imposed circulating pressure and pulling force, two swing arms (1,3) are swung back and forth, allow shock-absorbing spring be presented on force-bearing situation in the clutch damper; In the middle of this, pressure pull bar (11) stroke of reciprocating mechanism equals the required vertical height in swing arm (1,3) swing 0.5 α angle, when the shock-absorbing spring of either side is returned to free height, make the shock-absorbing spring both ends of the surface centre distance of opposite side be compressed to the test height, and the pivot angle of this side-sway swing arm (1 or 3) also reach the α angle of testing requirements.
4. according to the test method of the described clutch coupling torsion damping of claim 3 spring fatigue test device, it is characterized in that: the pivot angle α of swing arm (1,3) is 3o～25o.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310100900.9A CN103207069B (en) | 2013-03-27 | 2013-03-27 | Clutch coupling torsion damping spring fatigue test device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310100900.9A CN103207069B (en) | 2013-03-27 | 2013-03-27 | Clutch coupling torsion damping spring fatigue test device and method |
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| CN103207069A true CN103207069A (en) | 2013-07-17 |
| CN103207069B CN103207069B (en) | 2015-09-23 |
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Cited By (5)
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| CN103900916A (en) * | 2014-03-06 | 2014-07-02 | 燕山大学 | Pulling and bending multi-axis loading fatigue testing machine |
| CN104406870A (en) * | 2014-12-09 | 2015-03-11 | 青岛信森机电技术有限公司 | Air spring fatigue testing machine |
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| CN113560488A (en) * | 2021-07-16 | 2021-10-29 | 张智勇 | Vibration boiling cooling bed for steel preparation |
| CN114354411A (en) * | 2021-12-28 | 2022-04-15 | 重庆长安汽车股份有限公司 | Device and method for testing fatigue capability of weld joint of automobile rear tie rod |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103900916A (en) * | 2014-03-06 | 2014-07-02 | 燕山大学 | Pulling and bending multi-axis loading fatigue testing machine |
| CN103900916B (en) * | 2014-03-06 | 2016-03-02 | 燕山大学 | A kind of stretch bending turns round Multi-axial Loading fatigue tester |
| CN104406870A (en) * | 2014-12-09 | 2015-03-11 | 青岛信森机电技术有限公司 | Air spring fatigue testing machine |
| CN105043734A (en) * | 2015-07-09 | 2015-11-11 | 安徽舒城华云弹簧制造有限公司 | Spring stretching and bending life testing apparatus |
| CN113560488A (en) * | 2021-07-16 | 2021-10-29 | 张智勇 | Vibration boiling cooling bed for steel preparation |
| CN114354411A (en) * | 2021-12-28 | 2022-04-15 | 重庆长安汽车股份有限公司 | Device and method for testing fatigue capability of weld joint of automobile rear tie rod |
| CN114354411B (en) * | 2021-12-28 | 2023-11-21 | 重庆长安汽车股份有限公司 | Device and method for testing weld fatigue capability of rear tie rod of automobile |
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| CN103207069B (en) | 2015-09-23 |
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