CN103207069B - Clutch coupling torsion damping spring fatigue test device and method - Google Patents
Clutch coupling torsion damping spring fatigue test device and method Download PDFInfo
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- CN103207069B CN103207069B CN201310100900.9A CN201310100900A CN103207069B CN 103207069 B CN103207069 B CN 103207069B CN 201310100900 A CN201310100900 A CN 201310100900A CN 103207069 B CN103207069 B CN 103207069B
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Abstract
The invention discloses a kind of clutch coupling torsion damping spring fatigue test device and test method, this test unit is with secondary swing arm and an adjusting screw(rod) thereof, swing arm and base-mounted fulcrum screw rod hinged, swing arm can be swung around hinged center, two swing arms are linked into an integrated entity by adjusting screw(rod), and wherein the power rail of a swing arm swinging end and reciprocating moving mechanism is hinged and provide oscillatory forces.When doing shock-absorbing spring torture test, two tested springs are contained in base testing position respectively symmetrically, the adjusting screw(rod) of swing arm is regulated to make the swing arm bottom 0.5 α angle carry out precompression to spring, then reciprocating moving mechanism is started, two swing arms are made to carry out pressure and the test of moment of flexure composite force with α angular oscillation to tested spring, because test unit of the present invention and method make the pressurized of tested spring and BENDING PROCESS and clutch coupling shock-absorbing spring bend by pressure similar process operationally, therefore shock-absorbing spring force-bearing situation operationally can more accurately be reflected, thus can test findings more accurately 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
The clutch plate torsional vibration damper of automobile clutch all adopts cylindrical spring to be assemblied in the structure in the window of two damping disk(-isc)s and hub as shock-absorbing spring usually both at home and abroad at present, two damping disk(-isc) rivets and other part are connected as one, damping disk(-isc) and hub can relatively rotate around X-X axle, namely the window of damping disk(-isc) and hub can relatively rotate around X-X axle respectively, when two windows relatively rotate, because damping disk(-isc) window side and hub window one lateral extent shorten and compress shock-absorbing spring, at the window of damping disk(-isc) and hub not in relative rotation in situation, the both ends of the surface of shock-absorbing spring are parallel, shock-absorbing spring is not now stressed 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) is to rotate clockwise, when damping disk(-isc) rotates a α angle relative to 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 now shock-absorbing spring is while being stressed, and also bears moment of flexure; When damping disk(-isc) rotates counterclockwise, the window of damping disk(-isc) and hub in relative rotation angle is β, and now shock-absorbing spring also can make both ends of the surface distance shorten and not parallel because of above-mentioned effect, and shock-absorbing spring equally also bears pressure and moment of flexure.In this course, α angle is more than or equal to β angle usually, when namely damping disk(-isc) rotates clockwise α angle, the pressure that shock-absorbing spring bears and moment of flexure maximum, therefore the torture test condition using 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 applied by flat board makes shock-absorbing spring be repeatedly compressed to test height from free height by parallel, usually when this height works with shock-absorbing spring, both ends of the surface center is suitable by the distance compressed, but this kind of test shock-absorbing spring is only stressed, not by Moment, and testing equipment does not have 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 of shock-absorbing spring can not be reflected, therefore this testing equipment and mode can not draw comparatively correct test findings and authentic and valid data.
Summary of the invention
The present invention be directed to problem existing for prior art and defect and a kind of clutch coupling torsion damping spring fatigue test device proposed, this device can not only carry out the test of shock-absorbing spring pressured state, simultaneously shock-absorbing spring can also be allowed to present by stress during moment of flexure, can the composite force situation of effective simulated clutch clutch plate vibration damper torsion damping spring.In addition another technical matters that will solve of the present invention is to provide the method utilizing this test unit to carry out the torture test of clutch coupling shock-absorbing spring.
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 are relatively contained on fulcrum screw rod by hinge, fulcrum screw rod and one are then fixedly installed in base with nut for the gasket ring allocating height, install described spring base symmetrically being on the base under two swing arms; 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 under the precompressed of two swing arms, pivot angle is adjusted by adjusting screw(rod).There is provided required power for swinging to swing arm, clutch coupling torsion damping spring fatigue test device of the present invention is furnished with reciprocating strut and tie motion, and arbitrary swinging end of the strut and tie of this motion and two swing arms is hinged.
For the stressed fact 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: 1. the spring base shock-absorbing spring of two for testing being packed in symmetrically test unit base, and make shock-absorbing spring axle center to the distance of swing arm oscillation centre equal shock-absorbing spring axle center in damping disk(-isc) to damping disk(-isc) rotation axis distance, the fastening bolt of locking spring seat afterwards, suitable gasket ring thickness is selected to make two swing arms can be placed in two shock-absorbing spring upper ends respectively, then the set nut of fulcrum screw rod is tightened, make two swing arms pressing two shock-absorbing spring respectively, 2. adjustment connects the adjusting screw(rod) length between two swing arms, makes two swing arms around the hinge axis bottom 0.5 α angle respectively, allows two shock-absorbing springs be compressed in advance, 3. start the reciprocating moving mechanism of assembling, make the swinging end of the strut and tie of motion to swing arm impose circulating pressure and pulling force, swing arm is swung back and forth, thus make shock-absorbing spring be presented on force-bearing situation in clutch damper.In the middle of this, the pressure rod stroke of motion must equal swing arm and swing vertical height needed for 0.5 α angle, when the shock-absorbing spring of either side is returned to free height, the shock-absorbing spring both ends of the surface centre distance of opposite side is made to be compressed to test height, and the pivot angle of this side-sway swing arm also reaches the α angle of testing requirements, vice versa, and so circulate, and occurs until complete the torture test number of times of regulation or tested spring cause elastic force to lose efficacy situation because of decrease of fatigue strength.
In test unit of the present invention and method, because vertically arranged shock-absorbing spring acts on by swing arm arc pendulum, they also bear corresponding moment of flexure while bearing pressure, and pressurized and BENDING PROCESS and clutch coupling shock-absorbing spring pressurized operationally similar process by bending, therefore shock-absorbing spring pressurized operationally situation by bending can more accurately be reflected, which greatly enhances the accuracy of test, 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 pre-compressed, when the swing arm shock-absorbing spring swung in side is further compressed α angle from precompression 0.5 α angle, the shock-absorbing spring of side is then bound to free height from by compression 0.5 α angular convolution in addition, this part elastic energy can be utilized in swing, and the resilience spring energy of whole process of the test all can be utilized, the energy ezpenditure of process of the test therefore effectively can be reduced.
Accompanying drawing explanation
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 relatively hub window rotates clockwise α angle at work.
Fig. 2 is the stress figure of existing clutch coupling shock-absorbing spring when the relative hub window of damping disk(-isc) rotates counterclockwise β angle.
Fig. 3 is the schematic front view of clutch coupling torsion damping spring fatigue test device of the present invention.
Fig. 4 be test unit of the present invention method step 2. in the schematic diagram of adjusting screw(rod) by the two swing arm bottom 0.5 α angles.
Fig. 5 and Fig. 6 be test unit of the present invention respectively method step 3. in circulating pressure imposes to swing arm time tested spring stress constitutional diagram.
Embodiment
According to the clutch coupling torsion damping spring fatigue test device shown in Fig. 3, its swing arm 1, 3 make straight Z-shaped structure, swing arm 1, 3 two ends are all with hinge hole, with a hinge axis 8, they are relatively contained on fulcrum screw rod 7, fulcrum screw rod 7 and gasket ring 6 nut 10 for allocating height are fixedly mounted on base 5, adjusting screw(rod) 2 by with two swing arms 1, the swinging end of 3 is hinged makes swing arm 1, 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, base 5 under 3 installs described spring base 4 symmetrically.Clutch coupling shock-absorbing spring crane torsion test device of the present invention adopts reciprocating strut and tie motion supporting for it, by hinged with the arbitrary swinging end in swing arm 1,3 for the strut and tie 11 of motion when matching, to provide the power needed for swing arm 1,3 swing.
According to process shown in Fig. 3 to Fig. 6, the test method of clutch coupling torsion damping spring fatigue test device of the present invention has following step: be used for testing two shock-absorbing springs are packed in the spring base 4 of test unit base 5 by (1) symmetrically, make shock-absorbing spring axle center to swing arm 1 during installation, the distance of 3 oscillation centres equal spring axis in damping disk(-isc) to damping disk(-isc) rotation axis distance, the set bolt of fastening spring seat 4 afterwards, suitable gasket ring 6 thickness is selected to make two swing arms 1, 3 are just in time placed in shock-absorbing spring upper end respectively, then the set nut 10 of fulcrum screw rod 7 is tightened, make swing arm 1, the 3 tested spring of pressings (as Fig. 3) respectively, (2) adjust adjusting screw(rod) 2 length between connection two swing arm 1,3, make two swing arms 1,3 around the hinge axis 8 together bottom 0.5 α angle, allow two shock-absorbing springs first be pre-compressed (as Fig. 4), (3) start reciprocating moving mechanism, impose circulating pressure and pulling force by a swinging end of strut and tie 11 pairs of swing arms 1,3 of motion, two swing arms 1,3 are swung back and forth, thus make tested spring be presented on force-bearing situation in vibration damper.In the process, pressure pull bar 11 stroke of reciprocating moving mechanism equals swing arm 1,3 and swings vertical height needed for 0.5 α angle, when the shock-absorbing spring in left side returns to free height, the shock-absorbing spring both ends of the surface centre distance on right side can be compressed to test height, and now the pivot angle of right side swing arm 3 also reaches the α angle of testing requirements; And when the shock-absorbing spring both ends of the surface centre distance in left side is compressed to test height, the pivot angle of left swing arms 1 equally also reaches the α angle required by test, now the shock-absorbing spring on right side returns to again free height (as Fig. 5 Fig. 6), and so circulate, occur until complete the situation that the torture test number of times of regulation or tested spring cause elastic force to lose efficacy because of decrease of fatigue strength.The angle of oscillation α of the swing arm 1,3 in the present invention determines according to the designing requirement of clutch plate, is 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 various deformation structure, replaces straight Z-shaped swing arm 1,3 of the present invention as adopted straight-bar type fork in a device; Fulcrum screw rod 7 or the pretension by there being the base 5 of elevating mechanism to carry out testing bolt is replaced at fork centre rotation axis; Cam mechanism is used to make the oscillatory forces of fork or swing arm 1,3; Or replacing adjusting screw(rod) 2 etc. with without adjusting screw(rod) (only its two ends are threaded and grip nut), the structure of these distortion all should belong to scope of the present invention with similar devices and similar test method.
Claims (4)
1. a 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 are relatively contained on fulcrum screw rod (7) by hinge axis (8), this fulcrum screw rod (7) and one are fixedly mounted on base (5) for the gasket ring (6) nut (10) allocating height, install described spring base (4) symmetrically being on the base under swing arm (5); Described adjusting screw(rod) (2) is by being connected as a single entity with hinged two swing arms that make of the swinging end of two swing arms, and under the precompressed of two swing arms, pivot angle is adjusted by adjusting screw(rod) (2).
2. clutch coupling torsion damping spring fatigue test device according to claim 1, is characterized in that: the arbitrary swinging end in two swing arms (1,3) and the strut and tie (11) of a reciprocating moving mechanism hinged.
3. the test method according to clutch coupling torsion damping spring fatigue test device according to claim 2, it is characterized in that following step: the spring base (4) 1. two shock-absorbing springs being used for testing being packed in symmetrically test unit base (5), make shock-absorbing spring axle center to the distance of the oscillation centre of swing arm equal shock-absorbing spring axle center in damping disk(-isc) to damping disk(-isc) rotation axis distance, tighten the fastening bolt of spring base (4) afterwards, suitable gasket ring (6) thickness is selected to make two swing arms can be placed in two shock-absorbing spring upper ends respectively, then the nut (10) of fulcrum screw rod (7) is locked, make two swing arms pressing two shock-absorbing spring respectively, 2. adjustment connects adjusting screw(rod) (2) length between two swing arms, makes two swing arms around hinge axis (8) bottom 0.5 α angle respectively, allows two shock-absorbing springs be compressed in advance, 3. open described reciprocating moving mechanism, impose circulating pressure and pulling force by the swinging end of strut and tie (11) to swing arm of reciprocating moving mechanism, two swing arms are swung back and forth, allow shock-absorbing spring be presented on force-bearing situation in clutch damper, in the middle of this, strut and tie (11) stroke of reciprocating moving mechanism equals swing arm and swings vertical height needed for 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 test height, and the pivot angle of this side-sway swing arm also reach the α angle of testing requirements.
4. according to the test method of clutch coupling torsion damping spring fatigue test device according to claim 3, it is characterized in that: the pivot angle α of swing arm is 3o ~ 25o.
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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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| CN201310100900.9A CN103207069B (en) | 2013-03-27 | 2013-03-27 | Clutch coupling torsion damping spring fatigue test device and method |
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| CN103207069B true CN103207069B (en) | 2015-09-23 |
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| 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 |
| CN105043734B (en) * | 2015-07-09 | 2018-03-16 | 安徽舒城华云弹簧制造有限公司 | Spring elongation flex life test device |
| CN113560488A (en) * | 2021-07-16 | 2021-10-29 | 张智勇 | Vibration boiling cooling bed for steel preparation |
| 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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