CN103630377B - A kind of rear shock absorber of motorcycle Static load characteristics test unit - Google Patents

A kind of rear shock absorber of motorcycle Static load characteristics test unit Download PDF

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Publication number
CN103630377B
CN103630377B CN201310688823.3A CN201310688823A CN103630377B CN 103630377 B CN103630377 B CN 103630377B CN 201310688823 A CN201310688823 A CN 201310688823A CN 103630377 B CN103630377 B CN 103630377B
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China
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frame
hole
static load
grip slipper
shock absorber
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Expired - Fee Related
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CN201310688823.3A
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CN103630377A (en
Inventor
张冰蔚
朱鹏程
贺阳
单春贤
刘爱红
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Jiangsu University of Science and Technology
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Jiangsu University of Science and Technology
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Abstract

A kind of rear shock absorber of motorcycle Static load characteristics test unit, comprise the drive unit and clamping device of isolating arrangement up and down, drive unit comprises the driving mechanism, force snesor and the screw thread chuck that connect successively from top to bottom, and the motion parts of driving mechanism is also connected with a displacement transducer; Clamping device comprises the support, installation key seat and the grip slipper that are connected successively from bottom to top, grip slipper forms by upper ledge, side frame and lower frame the structure that a disconnected cross section perpendicular to one another is " Contraband " font, lower frame outerplanar is provided with protruding ear lock ring, the pin-and-hole of lock ring be fixed on the pin-and-hole of the installation key seat both sides on support by bearing pin pin joint, center upper frame is provided with clamping circular hole, also perpendicularly on side frame outerplanar be connected with lever, to be that one end of a is also perpendicular be connected with a straight-bar to lever development length, and the other end of straight-bar is provided with the hanging hole of mounting pouring weight.Structure of the present invention is simple, has and applies side force function, meet the vibroshock Static load characteristics testing requirements of correlation standard.

Description

A kind of rear shock absorber of motorcycle Static load characteristics test unit
Technical field
The present invention relates to properties of product test and experimental technique, especially a kind of rear shock absorber of motorcycle Static load characteristics test method and device.
Background technology
Vibroshock, as the critical component in driving vehicle, has vital role to the comfortableness of driving vehicle, security and maneuverability.The object that Static load characteristics (Static Load Characteristics) is tested is test vibroshock other stiction except damping force, Static load characteristics comprises the stiction between the inner relative motion part of vibroshock, the resistance of chamber volume change and the additional friction resistance etc. owing to tilting to install the generation of (especially front damper) stress deformation, it is the dimensioned precision of vibroshock inner body, geometrical precision, the rigidity of structure, the strength of materials, quality of fit, the comprehensive embodiment of the influence factors such as assembly quality, and it is directly related with the wear resistance of vibroshock and serviceable life.It's the serviceable life that senior general has a strong impact on vibroshock pasts quiescent load resistance.The motorcycle output of China is sure to occupy the first in the world already, but main based on low side and middle and low-end market.As the vibroshock of the important auxiliary equipment of motorcycle owing to lacking the means of quality testing and test method, govern product and improve quality and class.The output of current domestic motorcycle is subject to big city and limits the compacting rubbed with Development of E-bike, be faced with difficult challenge and the opportunity that makes the transition, following motorcycle will make the transition from means of transport of riding instead of walk to amusement, leisure and motion, and the comfortableness to vibroshock, security and serviceable life are proposed higher requirement by this.
People's Republic of China's automobile industry standard " motorcycle and trail bike vibroshock " (QC/T62-2007) that on September 1st, 2007 implements instead of former " motorcycle vibration absorber technical conditions " (QC/T62-1993) and " motorcycle vibration absorber test method " (QC/T63-1993) two standards, QC/T62-2007 standard has increased 6 vibroshock pilot projects newly, comprising stiction and Static load characteristics.In QC/T62-2007 version standard, stiction is defined as " vibroshock by regulation mounting condition, to be not more than 0.005m/s speed, when relative motion is done at two ends, midstroke produce frictional resistance ".Static load characteristics is defined as " vibroshock by the stroke of regulation, to be not more than 0.0015m/s speed, when relative motion is done at two ends, the relation curve of its load and displacement ".No matter stiction test all needs to remove damping spring for front damper and rear shock absorber, and vertically install, one end drives, and to specify the static friction force value of a test trip record oscillation cycle, and is defined as stiction with midstroke friction force.Drive vibroshock one end due to during test with very low speed, the damping force be directly proportional to speed can be got rid of.Static load characteristics test is except actuating speed is lower, because front wheel damper and rear wheel shock-absorbing device exist larger difference in physical dimension, load-bearing capacity, spring fitting mode etc., the mounted angle of front damper on motorcycle is significantly greater than rear shock absorber, physical dimension and stroke longer, front damper load bearing requirements is obviously little than rear shock absorber, and the damping spring of front damper is generally built-in, inconvenience dismounting, and the damping spring of rear shock absorber is generally external, easily dismantle.Although standard (QC/T62-2007) proposes pilot project and the conventional method of vibroshock Static load characteristics, but clearly do not provide the specific implementation method of vibroshock Static load characteristics test and concrete installation requirement in standard, and these standard voluntary standards, current domestic motorcycle vibration absorber manufacturer not yet implements Static load characteristics pilot project.Therefore be necessary that establishing criteria designs the concrete test method and test unit meeting standard-required, this pilot project is implemented in vibroshock manufacturing enterprise of China as early as possible, to improve quality and the class of China's motorcycle vibration absorber.
The vibroshock testing table that foreign well-known testing machine manufacturer produces is as the vibroshock testing table of American MTS Company, employing hydraulic servo oil cylinder drives, the test of the projects such as vibroshock model center building, stiction characteristic, spring static characteristic can be carried out, there is certain versatility, but due to expensive, general vibroshock manufacturer is unable to be purchased, and can not carry out the quiet load-characteristic test of vibroshock.For the Static load characteristics of rear shock absorber, need apply side force to vibroshock urceolus during test, need install special clamping mechanism additional, this causes certain difficulty to user of service.
The application will propose a kind of test method of special applicable rear shock absorber of motorcycle Static load characteristics and provide the theory structure of test unit, the demand of domestic vibroshock manufacturer to the test of rear shock absorber enforcement Static load characteristics is met, to providing guidance and foundation to the test of promotion and implementation Static load characteristics with specialty, test unit that is efficient, low cost.
Summary of the invention
The object of the invention is the testing requirements of design feature for rear shock absorber and Static load characteristics, propose a kind of test unit and test method of rear shock absorber Static load characteristics.
For reaching above-mentioned technical purpose, the present invention realizes the technical scheme that object takes and is:
A kind of rear shock absorber of motorcycle Static load characteristics test unit, comprise coaxial cable drive unit setting up and down and clamping device, wherein said drive unit comprises the driving mechanism 1, force snesor 3 and the screw thread chuck 4 that are connected successively from top to bottom, and wherein the motion parts of driving mechanism 1 is also connected with a displacement transducer 2, described clamping device comprises the support 9 be connected successively from bottom to top, key seat 8 and grip slipper 6 are installed, wherein said grip slipper 6 is by upper ledge, side frame and lower frame form the structure that a disconnected cross section perpendicular to one another is " Contraband " font, wherein lower frame outerplanar is provided with protruding ear lock ring 6b, the pin-and-hole of lock ring 6b be fixed on the pin-and-hole of installation key seat 8 both sides on support 9 by bearing pin 11 pin joint, center upper frame is provided with clamping circular hole, also perpendicularly on side frame outerplanar be connected with lever 7, one end that lever 7 extends is also perpendicular is connected with a straight-bar, the other end of straight-bar is provided with the hanging hole of mounting pouring weight 10.
Drive unit setting up and down described above and the isolation distance of clamping device are the length of vibroshock 5.
Driving mechanism 1 described above is hydraulic servo oil cylinder or motor-driven reduction of speed mechanical transmission mechanism.
Screw thread chuck 4 described above for patent name be " a kind of Quick Connect Kit for external thread axostylus axostyle ", the patent No. is the patent fixture of ZL20111036553313.
The clamping circular hole that grip slipper 6 upper ledge described above is provided with is the clamp 6a obtaining being separated after round hole axial cutting, and forming at grip slipper 6 and clamp 6a the half-round cross hole that radian is slightly less than π respectively, the screw that clamp 6a is arranged by both sides with grip slipper 6 is connected with screw.
Motorcycle vibration absorber " Static load characteristics test " pilot project that the present invention is newly-increased according to People's Republic of China's automobile industry standard " motorcycle and trail bike vibroshock " (QC/T62-2007), for the design feature of rear shock absorber of motorcycle, propose the structure of a kind of rear shock absorber Static load characteristics test method and test unit, beneficial effect is: the vibroshock Static load characteristics testing requirements meeting correlation standard, easy for installation, test method is reasonable, have and apply side force function, there is structure simple, obtain practical application, and there is the good prospect applied.
Accompanying drawing explanation
Accompanying drawing 1 is test unit structural representation (compression travel) of the present invention;
Accompanying drawing 2 is test unit structural representation of the present invention (recovery stroke);
Accompanying drawing 3 is the A-A cut-open view of Fig. 1;
Accompanying drawing 4 is the B-B cut-open view of Fig. 1;
Accompanying drawing 5 is the test unit Static load characteristics measured curve figure of invention.
In figure: 1, driving mechanism, 2, displacement transducer, 3, force snesor, 4, screw thread chuck, 5, rear shock absorber, 5a, piston rod, 5b, socket, 6, grip slipper, 6a, clamp, 6b, lock ring, 7, lever, 8, key seat is installed, 9, support, 10, pouring weight, 11, bearing pin.
Embodiment
Below with motorcycle Static load characteristics test unit for embodiment, and by reference to the accompanying drawings, technical scheme of the present invention to be described in further detail.
Embodiment:
Fig. 1 and Fig. 2 is this test method structure diagram, Fig. 1 is compression travel, Fig. 2 is for restoring stroke, it have expressed implements the test method of rear shock absorber 5 Static load characteristics test and the structure diagram of test unit, and test unit comprises driving mechanism 1, displacement transducer 2, force snesor 3, screw thread chuck 4, rear shock absorber 5, grip slipper 6, clamp 6a, lever 7, installs key seat 8, support 9, pouring weight 10 and bearing pin 11.
During test, rear shock absorber 5 is vertically installed, piston rod 5a upward, socket 5b down and be fixed on grip slipper 6, driving mechanism 1 is positioned at the top of rear shock absorber 5, do vertical up-or-down movement and the relative motion of piston rod 5a relative socket 5b low speed, to meet the requirement of " to be not more than 0.0015m/s speed " of standard regulation.For ensureing the test request of Static load characteristics, driving mechanism 1 must be avoided occurring low speed jerking motion phenomenon, reaches the low speed motion stability requirement needed for test.Displacement transducer 2 is connected with the motion parts of driving mechanism 1, synchronously moves up and down with driving mechanism 1, provides process of the test real-time displacement signal.Force snesor 3 upper end is connected with driving mechanism 1, lower end is connected with screw thread chuck 4, screw thread chuck 4 realizes transmitting rear shock absorber 5 piston rod 5a moving with being threaded of rear shock absorber 5 piston rod 5a end, force snesor 3 experience in process of the test vertical direction by force signal, it is Static load characteristics curve along the force value of rear shock absorber 5 installation direction and the relation curve of displacement.
Damping spring due to general rear shock absorber 5 is external, therefore first damping spring is removed before test, damping spring abutment end cylindrical position on socket 5b is utilized to clamp, specimen holder device comprises screw thread chuck 4, grip slipper 6, clamp 6a and clamping screw, the screw thread chuck 4 pairs of rear shock absorber 5 piston rod 5a end thread implement clamping, the structure of relevant screw thread chuck 4 and clamp principle see " a kind of Quick Connect Kit for external thread axostylus axostyle " (ZL201110355331.3).Fig. 3 is that Fig. 1 clamps position A-A cut-open view, grip slipper 6 top is the horizontally-arranged doorframe structure of level, form upper ledge, side frame and lower frame, protruding lock ring 6b is provided with outside lower frame, lock ring 6b passes through bearing pin 11 pin joint with the pin-and-hole installing key seat 8 both sides, center upper frame is provided with clamping circular hole, the clamp 6a be separated is obtained after round hole axial cutting, and form at grip slipper 6 and clamp 6a the half-round cross hole that radian is slightly less than π respectively, after clamp 6a and grip slipper 6 close up, by both sides screw, socket 5b cylindrical is clamped, one end of side frame and lever 7 is connected by screw integral.
The Static load characteristics test of rear shock absorber is substantially identical with the mounting means that stiction is tested, difference is that actuating speed is lower, and need to apply side force to rear shock absorber 5 socket 5b at the trial, side force bringing device comprises grip slipper 6, clamp 6a, lever 7, installs key seat 8, pouring weight 10 and bearing pin 11.Clamp 6a clip position centre distance grip slipper 6 lock ring 6b pin-and-hole centre distance is b, and lock ring 6b centre distance lever 7 mounts pouring weight 10 one end distance for a, and the weight of pouring weight 10 is P, and therefore, socket 5a clamps place and by horizontal side force is the size of concrete side force is determined according to experimental technique documentation requirements.Owing to being in test applied with side force to rear shock absorber 5, socket 5b, under the impact of side force F, produces transversal displacement trend, causes the additional resistance that deformation in piston rod 5a relative socket 5b moving process produces, therefore, Static load characteristics resistance measurement value is greater than stiction test value.The object applying side force in Static load characteristics test is the actual condition that simulation rear shock absorber 5 is installed on motorcycle, stressing conditions under making rear shock absorber 5 Static load characteristics test findings truly reflect rear shock absorber actual working state, Static load characteristics resistance measurement result should be less than the setting of product technology file.
To rear shock absorber 5 before carrying out Static load characteristics test, reply test specimen carries out correct installation, before installation, answer the pouring weight 10 of removal lever 7 one end, the piston rod 5a end thread of rear shock absorber 5 is implemented to clamp by the screw thread chuck 4 be connected with force snesor 3, relative position (not describing this adjusting mechanism in accompanying drawing) between adjustment driving mechanism 1 and grip slipper 6, when making driving mechanism 1 be positioned at first motion position, rear shock absorber is installing close to ultimate elongation state, by clamp 6a, piston tube 5b is clamped in grip slipper 6 correspondence position.Before change vibroshock specifications and models, due to the difference of the length of different size rear shock absorber, piston tube 5b diameter, test trip, should change corresponding grip slipper 6 and clamp 6a, lever 7 connects from different grip slippers 6 by screw.
Fig. 5 is this test unit Static load characteristics measured curve figure.The corresponding relation curve that Static load characteristics measured curve is surveyed for force snesor 3 and displacement transducer 2, wherein, horizontal ordinate is shift value, and ordinate is force value.The start of a run of test is near the maximum extension elongation of rear shock absorber 5 piston rod 5a, driving mechanism 1 declines and makes rear shock absorber 5 by compression, i.e. compression travel, driving mechanism 1 is promoted to rear shock absorber 5 and stretches recovery, namely stroke is restored, the force-displacement relationship of compression travel is top curve in figure, and the force-displacement relationship curve restoring stroke is lower curve.Owing to having removed damping spring before carrying out Static load characteristics test to rear shock absorber 5, the quiescent load curve obtained and transverse axis almost symmetry, the quiescent load resistance of each point has been the corresponding F in this displacement place y-F fvalue, as seen from the figure, the quiescent load resistance obtained is left large and right small, this is because apply the result of side force.The theoretical value of Static load characteristics is the Static load characteristics mean value of whole test trip, actual Static load characteristics generally with the Static load characteristics mean value of some travel point (as the initial, middle of stroke and end three point) for measured value, it is qualified for being less than setting, and it is defective for being greater than setting.

Claims (1)

1. a rear shock absorber of motorcycle Static load characteristics test unit, comprise coaxial cable drive unit setting up and down and clamping device, it is characterized in that: described drive unit comprises the driving mechanism (1), force snesor (3) and the screw thread chuck (4) that are connected successively from top to bottom, and the motion parts of wherein said driving mechanism (1) is also connected with a displacement transducer (2), described clamping device comprises the support (9) be connected successively from bottom to top, key seat (8) and grip slipper (6) are installed, wherein said grip slipper (6) is by upper ledge, side frame and lower frame form the structure that a disconnected cross section perpendicular to one another is " Contraband " font, wherein said lower frame outerplanar is provided with protruding ear lock ring (6b), the pin-and-hole of lock ring (6b) passes through bearing pin (11) pin joint with the pin-and-hole being fixed on installation key seat (8) both sides on support (9), center upper frame is provided with clamping circular hole, also perpendicularly on side frame outerplanar be connected with lever (7), to be that one end of a is also perpendicular be connected with a straight-bar to lever (7) development length, the other end of straight-bar is provided with the hanging hole of mounting pouring weight (10), described driving mechanism (1) is hydraulic servo oil cylinder or motor-driven reduction of speed mechanical transmission mechanism, the clamping circular hole that described grip slipper (6) upper ledge is provided with is the clamp (6a) obtaining being separated after round hole axial cutting, and forming at grip slipper (6) and clamp (6a) half-round cross hole that radian is slightly less than π respectively, the screw that clamp (6a) is arranged by both sides with grip slipper (6) is connected with screw.
CN201310688823.3A 2013-12-16 2013-12-16 A kind of rear shock absorber of motorcycle Static load characteristics test unit Expired - Fee Related CN103630377B (en)

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104198165B (en) * 2014-07-10 2018-01-19 浙江吉利汽车研究院有限公司 Damper durability degree experimental rig
CN106370442B (en) * 2016-08-16 2018-11-13 江苏科技大学 A kind of motorcycle vibration absorber assembly performance detecting system and control method
CN106596144B (en) * 2016-12-26 2019-02-26 北汽福田汽车股份有限公司 Restraint assembly and have its damper caliberating device
CN107036802A (en) * 2017-06-09 2017-08-11 北京强度环境研究所 A kind of shock absorber overloading-vibrating environment pilot system and test method

Citations (4)

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CN102081014A (en) * 2010-12-03 2011-06-01 北京华谷减振器设备有限公司 Comprehensive performance test bed of automobile shock absorber
CN201945458U (en) * 2010-12-07 2011-08-24 江苏明星减震器有限公司 Test bed for rear-absorber performance tests
CN102539168A (en) * 2010-12-07 2012-07-04 江苏明星减震器有限公司 Comprehensive test bench for shock absorber
CN102539167A (en) * 2010-12-07 2012-07-04 江苏明星减震器有限公司 Performance test table for rear shock absorber

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102081014A (en) * 2010-12-03 2011-06-01 北京华谷减振器设备有限公司 Comprehensive performance test bed of automobile shock absorber
CN201945458U (en) * 2010-12-07 2011-08-24 江苏明星减震器有限公司 Test bed for rear-absorber performance tests
CN102539168A (en) * 2010-12-07 2012-07-04 江苏明星减震器有限公司 Comprehensive test bench for shock absorber
CN102539167A (en) * 2010-12-07 2012-07-04 江苏明星减震器有限公司 Performance test table for rear shock absorber

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