CN107238503A - Shock absorber user terminal rubber assembly Mechanics Performance Testing device and method of testing - Google Patents
Shock absorber user terminal rubber assembly Mechanics Performance Testing device and method of testing Download PDFInfo
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- CN107238503A CN107238503A CN201710555626.2A CN201710555626A CN107238503A CN 107238503 A CN107238503 A CN 107238503A CN 201710555626 A CN201710555626 A CN 201710555626A CN 107238503 A CN107238503 A CN 107238503A
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- power transmission
- shock absorber
- user terminal
- transmission framework
- pressure sensor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/04—Suspension or damping
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
Abstract
The invention discloses a kind of shock absorber user terminal rubber assembly Mechanics Performance Testing device, including load basic part, pull pressure sensor, power transmission framework, minute displacement sensor and exciting displacement transducer；The load basic part pull pressure sensor fixedly connected below；It is connected below the pull pressure sensor with power transmission framework upper ledge；Power transmission framework lower frame is arranged on shock absorber user terminal；The minute displacement sensor, is arranged between power transmission framework upper ledge and shock absorber user terminal, the change for testing relative displacement between the two；The exciting displacement transducer, is arranged between power transmission framework lower frame and the lower lift ring of shock absorber, change or relative motion for testing relative displacement between the two.Make vibration damper complement in real vehicle confined state and by the motion under the excitation of specified experiment condition, the external force and deflection of double rubber assemblies deformations are made by measurement simultaneously and tested at one in circulation while measuring the performance of two kinds of rubber assemblies including installing bushing and lower damping block.
Description
Technical field
The invention is related to automotive suspension kinetic test field, and in particular to a kind of to be tried with vibration damper complement external characteristics
Test the shock absorber user terminal rubber assembly Mechanics Performance Testing device and method of testing of synchronous progress.
Background technology
Usual shock absorber of automobile suspension assembly is connected by its piston rod upper end with body of a motor car, therefore vibration damper complement is lived
Stopper rod upper end is referred to as " user terminal ", and the bidirectional damper power of vibration damper complement is exactly to be delivered to by its user terminal on vehicle body.Car
In traveling, it is prominent that the factor such as road surface is rough and uneven in surface can cause the amplitude of vibration damper complement damping force and the direction of damping force to occur
Become.To prevent damping force mutation from producing impact to vehicle body, and then there is extraordinary noise, shock absorber user terminal is often through double rubber
Assembly (installation bush Assembly 11 and lower damping block 12 i.e. as shown in Figure 1) is connected with vehicle body and transmits damping force, such as Fig. 1 institutes
Show, conventional bitubular double-action hydraulic vibration damper complement is by guide sleeve assembly 14, shoe cream room 20, rod end chamber 18, work at present
Stopper rod assembly 19, bottom valve chamber 21, working cylinder assembly 23, oil storage cylinder assembly 16 and lower lift ring 24 are constituted.By lock-nut 8, tightly
Gu nut 10, installation bush Assembly 11, lower damping block 12 and spacing ring 13 make piston-rod assembly 19 be realized with car body connecting plate 17
Viscoplasticity is connected.Piston-rod assembly 19 and the connection end of car body connecting plate 17 are referred to as " vibration damper complement use by usual shock absorber industry
Family end ", the user of vibration damper complement refers to vehicle body.
Vibration damper complement basic functional principle, structure diagram as shown in Figure 1 understands that restoring stroke, (wheel is away from vehicle body
Stroke) in, rod end chamber 18 is high pressure chest, and bottom valve chamber 21 is low pressure chamber, therefore damping fluid flows into bottom valve by rod end chamber 18
Chamber 21；Similarly, compression travel (stroke of the wheel close to vehicle body) midsole valve pocket 21 is high pressure chest, and rod end chamber 18 is low pressure chamber,
Damping fluid flows into rod end chamber 18 by bottom valve chamber 21.But it is due to the presence of piston rod 15, two chamber volume variable quantities are different, therefore
Compression valve and recuperation valve that the two sets of valve blocks set by bottom valve valve block group are formed, also have between shoe cream room 20 and bottom valve chamber 21
The exchange of a small amount of damping fluid.From hydrodynamics and hydraulic principle, liquid can be produced when fluid flows through hole under differential pressure action
Pressure drag Buddhist nun, i.e. damping force, therefore absorber and compression travel all produce damping force, but work former according to automobile suspension system
Reason and matching relationship, the recovery damping force of vibration damper complement are 2-3 times of compression damping power.During work, the two-way resistance of shock absorber
Buddhist nun's power, i.e. recovery damping force and compression damping power are delivered on wheel set or axle assembly by lower lift ring 24；While vibration damping
The bidirectional damper power of device is delivered to vehicle body also by the user terminal, installation bush Assembly 11 and lower damping block 12 of piston-rod assembly 19
On.
Therefore, user terminal rubber assembly mechanical property will influence the connection quality of vibration damper complement and body of a motor car.Due to
Genus hevea viscoplasticity goods and materials, its elastic characteristic and damping characteristic are all non-linear and closely related with specific operating mode, therefore in spy
Determine under operating mode while measurement makes the external force and deflection of double rubber assembly deformations can be obtained by its mechanical property.
The content of the invention
The invention purpose be to provide a kind of vibration damper complement external characteristics that can be under synchro measure real vehicle installment state and
The device and method of testing of the double rubber assembly mechanical properties of shock absorber user terminal, make vibration damper complement real vehicle confined state and by
Motion under being encouraged to specified experiment condition, makes the external force and deflection of double rubber assemblies deformations and at one by measurement simultaneously
The performance of two kinds of rubber assemblies including installing bushing and lower damping block is measured in experiment circulation simultaneously.
The technical scheme that the invention is used for：
Shock absorber user terminal rubber assembly Mechanics Performance Testing device, including load basic part 1, pull pressure sensor 2 are passed
Power framework 4, minute displacement sensor 7 and exciting displacement transducer 22；
The pull pressure sensor 2 fixedly connected below of load basic part 1；
The pull pressure sensor 2 is used to test vibration damper complement damping force, the lower section of pull pressure sensor 2 and power transmission framework
Upper ledge is connected；
The power transmission framework 4 is used to imitate car body connecting plate, and power transmission framework lower frame is arranged on shock absorber user terminal so that subtracted
The bidirectional damper power of device assembly of shaking is delivered on power transmission framework 4；
The minute displacement sensor 7, is arranged between power transmission framework upper ledge and shock absorber user terminal, for testing between the two
The change of relative displacement；The change of these relative displacements is exactly to install bushing 11 or lower damping block 12 to produce under damping force effect
Deformation.
The exciting displacement transducer 22, is arranged between power transmission framework lower frame and the lower lift ring 24 of shock absorber, for surveying
Try the change or relative motion of relative displacement between the two.These relative motions are exactly the fortune of the cylinder body opposing pistons of vibration damper complement
It is dynamic, that is, the motion for making vibration damper complement produce damping force；Kinematic parameter and tension and compression measured by exciting displacement transducer 22
Damping force measured by force snesor 2 combines the external characteristics to form vibration damper complement, i.e. model center building and speed characteristics.
Described shock absorber user terminal rubber assembly Mechanics Performance Testing device, also with power transmission bolt 3, the pressure
The lower section of sensor 2 is fixedly connected with power transmission framework upper ledge by power transmission bolt 3.So that shock absorber bidirectional damper power passes through shock absorber
User terminal is installed bushing 11 or lower damping block 12 and is delivered to respectively on power transmission framework 4, and the recovery along with vibration damper complement and
The active force that compression travel alternately changes to the formation of power transmission framework 4；
Described shock absorber user terminal rubber assembly Mechanics Performance Testing device, the upper end of minute displacement sensor 7 passes through
Upper drawing piece 5 and upper drawing piece round nut 6 are arranged on power transmission framework upper ledge；The lower end of minute displacement sensor 7 passes through lower drawing piece 9 and lower drawing piece
Round nut 31 is arranged on power transmission framework lower frame or shock absorber user terminal.
Described shock absorber user terminal rubber assembly Mechanics Performance Testing device, the upper drawing piece 5 is Z-type platy structure,
With first install side I 5.1, second install while I 5.2 and positioned at first install while I and second install side I between perpendicular folding
Side I 5.3；First installation side I 5.1 is fixedly mounted on power transmission framework upper ledge；Minute displacement sensor upper end is connected to the second installation side I
On 5.2, and the position being connected on the second installation side I 5.2 with minute displacement sensor upper end suppresses reinforcement I 5.4；
Lower drawing piece 9 is Z-type platy structure, and side II 9.1 is installed with first, and second installs side II 9.2 and positioned at first
Perpendicular flanging II 9.3 between installing when II and second install II；First, which installs side II 9.1, is arranged on shock absorber user terminal；
Minute displacement sensor lower end is connected on the second installation side II 9.2, and second install side II 9.2 on under minute displacement sensor
The position of end connection suppresses reinforcement II 9.4.To prevent from being deformed after upper drawing piece 5 and the stress of lower drawing piece 9 influenceing thin tail sheep
The measuring accuracy of sensor 7, the upper drawing piece 5 and lower drawing piece 9, which take, prevents the structural measure of deformation；Upper drawing piece 5 is small position
The upper end of displacement sensor 7 is connected with the top of power transmission framework 4, transmits the power of vertical direction between the two；Because upper drawing piece 5 belongs to thin
Plate accessory, vertical direction resistance capacity to deformation is poor, it is therefore desirable to improves it using the structure of above-mentioned upper drawing piece 5 and resists vertical direction
Resistance capacity to deformation；Similarly lower drawing piece 9 is the lower end of minute displacement sensor 7 and the upper end of piston rod 15, i.e. user terminal is connected to one
Rise, the lower end of minute displacement sensor 7 is realized with the upper end of piston rod 15 and be synchronized with the movement；Because lower drawing piece 9 belongs to thin plate like members, hang down
Nogata is low to resistance capacity to deformation；And lower drawing piece 9 needs to transmit the work between the lower end of minute displacement sensor 7 and the upper end of piston rod 15
Firmly, and when lower drawing piece 9 and the upper end of piston rod 15 are synchronized with the movement the inertia force produced can cause the change of the vertical direction of lower drawing piece 9
Shape, influences the measuring accuracy of minute displacement sensor 7.Particularly when recovery and compression travel or compression are with restoring stroke conversion,
Commutation inertia force can make lower drawing piece 9 produce moderate finite deformation, need to improve its resistance vertically using the structure of above-mentioned lower drawing piece 9 for this
Direction resistance capacity to deformation.
Described shock absorber user terminal rubber assembly Mechanics Performance Testing device, the shock absorber user terminal is on piston rod
End, the piston rod upper end has the installation bush Assembly 11 and lower damping block 12 being arranged on piston rod 15, the power transmission frame
Frame lower frame is arranged on piston rod 15 and between installation bush Assembly 11 and lower damping block 12.
Described shock absorber user terminal rubber assembly Mechanics Performance Testing device, the lower frame of power transmission framework 4 has outside
The flash structure 4.1 of side extension, the upper end of exciting displacement transducer 22 is connected by flash structure 4.1 with power transmission framework 4；Swash
The lower end of displacement transducer 22 that shakes is connected by road conditions lower drawing piece 28 with lower lift ring 24.
Described shock absorber user terminal rubber assembly Mechanics Performance Testing device, the road conditions lower drawing piece 28 is L-type tabular
Structure, is installed when III 28.1 and second are installed III 28.2, the first installation side III 28.1 is arranged on orthogonal first
On lower lift ring 24, the lower end of exciting displacement transducer 22 is arranged on second and installed on side III 28.2；Second install side III 28.2 on
The connected position in the lower end of exciting displacement transducer 22 suppresses reinforcement III 28.3.Said structure is used to avoid it because of motional inertia
Power and power is transmitted between the lower end of exciting displacement transducer 22 and lower lift ring 24 it is deformed, the survey of influence exciting displacement transducer 22
Try precision.
Shock absorber user terminal rubber assembly mechanic property test method, using described shock absorber user terminal rubber assembly power
Performance testing device is learned, is specially：
A. using pull pressure sensor test vibration damper complement damping force, the damping force include absorber damping force and
Shock absorbers compression damping force；
B. simultaneously using minute displacement sensor 7 by measuring the vertical movement of shock absorber user terminal, i.e. bushing is installed in measurement
The deformation that assembly 11 and the lower assembly of damping block 12 are produced by stress；
C. the vertical movement rule of lower lift ring 24 is measured using exciting displacement transducer 22 simultaneously；
Pull pressure sensor 2, which surveys absorber damping force and minute displacement sensor 7 and surveys installation bush Assembly 11, to be become
Shape constitutes installation bush Assembly mechanical property；Pull pressure sensor 2 surveys absorber damping force and exciting displacement sensing
Device 22 surveys the external characteristics that lower lift ring vertical movement rule constitutes absorber stroke；
Pull pressure sensor 2 surveys shock absorbers compression damping force and surveys down the deformation structure of damping block 12 with minute displacement sensor 7
Into lower damping block mechanical property；Pull pressure sensor 2 is surveyed shock absorbers compression damping force and surveyed with exciting displacement transducer 22
The vertical movement of lower lift ring 24 rule constitutes the external characteristics of shock absorbers compression stroke.
Therefore the invention is ensureing vibration damper complement external characteristics experiment condition and shock absorber user terminal rubber assembly power
Learn (the i.e. experiment of vibration damper complement external characteristics and user terminal rubber assembly mechanical property on the premise of performance test operating mode is synchronously carried out
Experiment is being carried out in same operating or same excitation), realize to test at one in circulation and measure simultaneously including installing bushing with
The performance of two kinds of rubber assemblies including damping block, and the purpose of vibration damper complement external characteristics is synchronously measured, in order to obtain
The double rubber assembly dynamic mechanicals of shock absorber user terminal, also obtain vibration damper complement external characteristics simultaneously, while also allowing for analysis
The reasonability of two kinds of characteristic (performance) matchings, improves the test and evaluation means of vibration damper complement performance.
The invention shock absorber user terminal rubber assembly (including installing bush Assembly and lower vibration damping block assembly) mechanical property
Energy test device is to be conducive to improving testing efficiency, is also beneficial to both the matching analysis.This is also embodied in test under operating mode
The measurement condition of innovation and creation is identical with the experiment condition of vibration damper complement external characteristics, that is, completes vibration damper complement external characteristics reality
While testing, the test of two rubber assembly mechanical properties is also completed.Same working condition measurement, is conducive to rubber assembly mechanical property
With the matching analysis of vibration damper complement external characteristics.Speed of experiment (the shock absorber cylinder barrel phase of general vibration damper complement external characteristics experiment
For the speed of damper piston) scope larger (0.05-1.5m/s) and the invention be the survey of rubber assembly mechanical property
Examination tests the completion that is integrated with vibration damper complement external characteristics, therefore, it is possible to realize that rubber assembly is static and dynamic mechanical is surveyed
Examination.
Brief description of the drawings
Fig. 1 is shock absorber of automobile suspension assembly and body connection structure sketch.
Fig. 2 is Fig. 2 piston-rod assemblies and body connection structure sketch.
Fig. 3 shock absorber user terminal rubber assembly Mechanics Performance Testing apparatus structure sketches.
Fig. 4 is the structure diagram of power transmission framework 4 in Fig. 3.
Fig. 5 .1 are the structure diagram A of upper drawing piece 5 in Fig. 3.
Fig. 5 .2 are the structure diagram B of upper drawing piece 5 in Fig. 3.
Fig. 6 .1 are the structure diagram A of lower drawing piece 9 in Fig. 3.
Fig. 6 .2 are the structure diagram B of lower drawing piece 9 in Fig. 3.
Fig. 7 .1 are the structure diagram A of road conditions lower drawing piece 9 in Fig. 3.
Fig. 7 .2 are the structure diagram B of road conditions lower drawing piece 9 in Fig. 3.
Fig. 8 is the installation mechanical curves of bush Assembly 11 in Fig. 3.
Fig. 9 is the lower mechanical curves of damping block 12 in Fig. 3.
Wherein 1- loads basic part；2- pull pressure sensor；3- power transmission bolts；4- power transmission frameworks；5- upper drawing pieces；6- is pulled up
Piece round nut；7- minute displacement sensors；8- lock-nuts；9- lower drawing pieces；10- clamp nuts；11- installs bush Assembly；Under 12-
Damping block；13- spacing rings；14- guide sleeve assemblies；15- piston rods；16- oil storage cylinder assemblies；17- car body connecting plates；18- pistons
Rod cavity；19- piston-rod assemblies；20- shoe cream rooms；21- bottom valve chambers；22- exciting displacement transducers；23- working cylinder assemblies；Under 24-
Suspension ring；25- articulation bolts；26- road conditions excitation heads；27- big nuts；28- road conditions lower drawing pieces；29- road conditions lower drawing piece round nuts；
30- road conditions displacement nuts；31- lower drawing piece round nuts；32- pistons；33- flow- through valve plate groups；34- restores valve block group.
Embodiment
The shock absorber user terminal rubber assembly Mechanics Performance Testing device of embodiment 1
As shown in figure 3, including load basic part 1, pull pressure sensor 2, power transmission framework 4, minute displacement sensor 7 and exciting
Displacement transducer 22.
The pull pressure sensor 2 fixedly connected below of load basic part 1；Pull pressure sensor 2 is to be used to test vibration damper complement resistance
The force snesor of Buddhist nun's power；The lower section of pull pressure sensor 2 is connected by power transmission bolt 3 and power transmission framework upper ledge；Power transmission bolt one end
It is connected with pull pressure sensor 2, the power transmission bolt other end is through power transmission framework upper ledge and by power transmission nut and power transmission framework
Frame is connected.Power transmission framework 4 is used to imitate car body connecting plate, and power transmission framework lower frame is arranged on piston rod 15 and total positioned at bushing is installed
Into the installation site between 11 and lower damping block 12 being car body connecting plate 17.So shock absorber bidirectional damper power passes through piston rod
15th, bush Assembly 11 or lower damping block 12 are installed to be delivered to respectively on power transmission framework 4, and the recovery along with vibration damper complement and
The active force that compression travel alternately changes to the formation of power transmission framework 4.
As shown in figure 3, minute displacement sensor 7 is arranged between power transmission framework upper ledge and piston rod user terminal, for testing
The change of relative displacement between the two.The change of these relative displacements is exactly to install bush Assembly 11 or lower damping block 12 in damping force
The lower deformation produced of effect.The upper end of minute displacement sensor 7 is consolidated by upper drawing piece 5 and upper drawing piece round nut 6 with the upper ledge of power transmission framework 4
Even；The lower end of minute displacement sensor 7 is connected by lower drawing piece 9 and lower drawing piece round nut 31 with piston rod 15 or power transmission framework 4 respectively.
Prevent from being deformed influenceing thin tail sheep after upper drawing piece 5 and the stress of lower drawing piece 9 as Fig. 5 .1,5.2,6.1,6.2 are shown
The measuring accuracy of sensor 7, two pulling-on pieces, which take, prevents the structural measure of deformation.Upper drawing piece 5 is the upper end of minute displacement sensor 7
It is connected with power transmission framework upper ledge, transmits the power of vertical direction between the two；The upper drawing piece 5 as shown in Fig. 5 .1,5.2 is Z-shaped plate shape knot
Structure, sheet metal thickness is 2mm, and it has first to install side I 5.1, and second installs while I 5.2 and I and the when being installed positioned at first
Two install the perpendicular flanging I 5.3 between side I；First, which installs side I 5.1, is arranged on power transmission bolt 3 positioned at power transmission nut and power transmission frame
Between frame upper ledge, and the first installation side I 5.1 is fastened on power transmission framework upper ledge by power transmission nut；On minute displacement sensor
End is connected on the second installation side I, and the position being connected on the second installation side I with minute displacement sensor upper end is suppressed enough
The reinforcement I 5.4 of length, to improve the ability that it resists vertical direction deformation；Because upper drawing piece 5 belongs to thin plate like members, vertically
Direction resistance capacity to deformation is poor, it is therefore desirable to improves it using the structure of the upper drawing piece 5 as shown in Fig. 5 .1,5.2 and resists Vertical Square
To resistance capacity to deformation；
Similarly lower drawing piece 9 is the lower end of minute displacement sensor 7 and the upper end of piston rod 15, i.e. user terminal links together, and makes small
Realize and be synchronized with the movement with the upper end of piston rod 15 in the lower end of displacement transducer 7；The lower drawing piece 9 as shown in Fig. 6 .1,6.2 is Z-shaped plate shape knot
Structure, sheet metal thickness is 2mm, its have first install side II 9.1, second install while II 9.2 and positioned at first install while II and
Second installs the perpendicular flanging II 9.3 between side II；First, which installs side II 9.1, is arranged on piston rod 15 positioned at the He of lock-nut 8
Between clamp nut 10, and fastened by lock-nut 8 and clamp nut 10；Minute displacement sensor lower end is connected to the second installation
On side II, and the position being connected on the second installation side II with minute displacement sensor lower end suppresses the reinforcement II of sufficient length
9.4, to improve the ability that it resists vertical direction deformation；Because lower drawing piece 9 belongs to thin plate like members, vertical direction resistance to deformation energy
Power is low；And lower drawing piece 9 needs to transmit the active force between the lower end of minute displacement sensor 7 and the upper end of piston rod 15, and lower drawing piece 9
The inertia force produced when being synchronized with the movement with the upper end of piston rod 15 can cause the deformation of the vertical direction of lower drawing piece 9, and influence thin tail sheep is passed
The measuring accuracy of sensor 7.Particularly when recovery and compression travel or compression are with restoring stroke conversion, under commutation inertia force can make
Pulling-on piece 9 produces moderate finite deformation, needs to improve its resistance Vertical Square using the structure of the lower drawing piece 9 as shown in Fig. 6 .1,6.2 for this
To resistance capacity to deformation.
As shown in figure 3, exciting displacement transducer 22 is arranged between the lower section of power transmission framework 4 and suspension ring 24, for testing two
The change or relative motion of relative displacement between person.These relative motions are exactly the motion of the cylinder body opposing pistons of vibration damper complement,
Vibration damper complement is namely set to produce the motion of damping force；Kinematic parameter measured by exciting displacement transducer 22 is passed with pressure
Damping force measured by sensor 2 combines the external characteristics to form vibration damper complement, i.e. model center building and speed characteristics.
As shown in figure 3, flash structure 4.1 and power transmission frame that the upper end of exciting displacement transducer 22 passes through the lower section of power transmission framework 4
Frame 4 is connected；The lower end of exciting displacement transducer 22 passes through road conditions lower drawing piece 28 and road conditions lower drawing piece round nut 29 and the phase of lower lift ring 24
Even.With it is preceding it is described similarly, road conditions lower drawing piece 28 must be using structure as shown in Fig. 7 .1,7.2, to avoid it because of motional inertia
Power and power is transmitted between the lower end of exciting displacement transducer 22 and suspension ring 24 it is deformed, the test of influence exciting displacement transducer 22
Precision.Road conditions lower drawing piece 28 is L-type platy structure as shown in Fig. 7 .1,7.2, and sheet metal thickness is 2mm, with orthogonal the
One installs when III 28.1 and second are installed III 28.2, is equipped with lower lift ring 24 on articulation bolt 25, articulation bolt 25 and road is housed
Condition excitation head 26, the first of road conditions lower drawing piece 28, which installs side III 28.1, is arranged on articulation bolt 25 and positioned at lower lift ring 24 and road
Between condition excitation head 26, and fastened by big nut 27；The lower end of exciting displacement transducer 22 is arranged on second and installs side III 28.2
On, the lower end of exciting displacement transducer 22 installs the position that is connected with lower lift ring 24 of side III 28.2 by road conditions second and suppresses long enough
The reinforcement III 28.3 of degree, to improve the ability that it resists vertical direction deformation.
As shown in figure 4, suppressing the framework reinforcement 4.2 of sufficient length on power transmission framework 4, deformation is resisted to improve it
Ability.
The shock absorber user terminal rubber assembly mechanic property test method of embodiment 2
Using above-mentioned shock absorber user terminal rubber assembly Mechanics Performance Testing device, it is specially：
A. using pull pressure sensor test vibration damper complement damping force, the damping force include absorber damping force and
Shock absorbers compression damping force；
B. installation bush Assembly is realized in the vertical movement using minute displacement sensor 7 by measuring piston rod user terminal respectively
11 and the measurement of the assembly stress deformation of lower damping block 12；
C. using exciting displacement transducer 22 i.e. large displacement sensor measurement lower lift ring 24 vertical movement rule, even if vibration damping
Device produces the characteristics of motion of the cylinder barrel opposing pistons of damping force；
D. pull pressure sensor 2 surveys absorber damping force and surveys installation bush Assembly 11 with minute displacement sensor 7
It is static properties under deformation construction installation bush Assembly mechanical property, low speed, is otherwise dynamic property.Meanwhile, pressure is passed
Sensor 2 surveys absorber damping force and exciting displacement transducer 22 surveys lower lift ring vertical movement rule and constitutes shock absorber
Restore the external characteristics of stroke；
E. pull pressure sensor 2, which surveys shock absorbers compression damping force and surveys down damping block 12 with minute displacement sensor 7, deforms
It is static properties to constitute under the lower mechanical property of damping block 12, low speed, is otherwise dynamic property.Meanwhile, the institute of pull pressure sensor 2
Survey shock absorbers compression damping force and exciting displacement transducer 22 surveys the vertical movement of lower lift ring 24 rule and constitutes shock absorbers compression
The external characteristics of stroke.
As shown in Fig. 8 the performance curve of bush Assembly 11 is installed, abscissa is the installation measured by minute displacement sensor 7
The deformation values that bush Assembly 11 occurs under the effect of absorber damping force；As shown in Fig. 9 descend the performance of damping block 12 bent
Line, abscissa is the change that the lower vibration damping block assembly measured by minute displacement sensor 7 occurs under the effect of shock absorbers compression damping force
Shape value；Therefore, the invention take with real vehicle identical assembling structure, while and with working condition measurement install bush Assembly and under
The mechanical property of vibration damping block assembly.
The invention test philosophy is：As it was previously stated, the damping force of vibration damper complement is mainly by piston 32 and its circulation
The hole that valve block group 33 and recovery valve block group 34 are formed is produced and acted on piston rod 15.Wherein recovery damping force passes through piston
32nd, piston rod 15, lock-nut 8, installation bush Assembly 11 are acted on car body connecting plate 17, therefore, resistance are restored while testing
Buddhist nun's power and the compression by its installation bush Assembly 11 caused, it is possible to obtain installing the quiet dynamic mechanical of bush Assembly 11
Performance；Compression damping power is acted on car body connecting plate 17 by piston 32, piston rod 15, spacing ring 13 and lower damping block 12.
With it is preceding similarly, while test compression damping force and the compression by its lower damping block 12 caused, it is possible to obtain lower vibration damping
The static and dynamic characteristics of mechanics of block 12.
When carrying out above-mentioned test, while testing displacement of the lower lift ring 24 with respect to vehicle body, such recovery damping force is with restoring
Travel displacement is formed the external characteristics that vibration damper complement restores stroke；Similarly, compression damping power and compression travel displacement are with regard to shape
Into the external characteristics of vibration damper complement compression travel
In summary, because the simultaneously synchronous mechanical property of installation bush Assembly 11 with working condition measurement and vibration damper complement are multiple
Former stroke external characteristics, thus compare their changing rule and study their correlations can then evaluate both matching it is reasonable
Property；The mechanical property of lower damping block 12 and the correlation and two of vibration damper complement compression travel external characteristics can also similarly be evaluated
The reasonability of person's matching.
Claims (7)
1. shock absorber user terminal rubber assembly Mechanics Performance Testing device, it is characterised in that including load basic part (1), tension and compression
Force snesor (2), power transmission framework (4), minute displacement sensor (7) and exciting displacement transducer (22)；
The load basic part (1) pull pressure sensor fixedly connected below (2)；
The pull pressure sensor (2) is used to test below vibration damper complement damping force, pull pressure sensor (2) and power transmission framework
Upper ledge is connected；
The power transmission framework (4) is used to imitate car body connecting plate, and power transmission framework lower frame is arranged on shock absorber user terminal so that vibration damping
The bidirectional damper power of device assembly is delivered on power transmission framework (4)；
The minute displacement sensor (7), is arranged between power transmission framework upper ledge and shock absorber user terminal, for testing phase between the two
Change to displacement；
The exciting displacement transducer (22), is arranged between power transmission framework lower frame and the lower lift ring (24) of shock absorber, for surveying
Try the change or relative motion of relative displacement between the two.
2. shock absorber user terminal rubber assembly Mechanics Performance Testing device as claimed in claim 1, it is characterised in that also have
It is fixedly connected below power transmission bolt (3), the pull pressure sensor (2) with power transmission framework upper ledge by power transmission bolt (3).
3. shock absorber user terminal rubber assembly Mechanics Performance Testing device as claimed in claim 1, it is characterised in that described small
Displacement transducer (7) upper end is arranged on power transmission framework upper ledge by upper drawing piece (5) and upper drawing piece round nut (6)；Small displacement sensing
Device (7) lower end is arranged on power transmission framework lower frame or shock absorber user terminal by lower drawing piece (9) and lower drawing piece round nut (31).
4. shock absorber user terminal rubber assembly Mechanics Performance Testing device as claimed in claim 3, it is characterised in that on described
Pulling-on piece (5) be Z-type platy structure, with first install side I (5.1), second install while I (5.2) and positioned at first install while
I and second install side I between perpendicular flanging I (5.3)；First, which installs side I (5.1), is fixedly mounted on power transmission framework upper ledge；Small position
Displacement sensor upper end is connected on the second installation side I (5.2), and second install side I (5.2) on minute displacement sensor upper end
The position of connection suppresses reinforcement I (5.4)；
Lower drawing piece (9) is Z-type platy structure, and side II (9.1) are installed with first, and second installs side II (9.2) and positioned at the
One install while II and second install while II between perpendicular flanging II (9.3)；First, which installs side II (9.1), is arranged on shock absorber user
On end；Minute displacement sensor lower end is connected on the second installation side II (9.2), and second install side II (9.2) on small position
The position of displacement sensor lower end connection suppresses reinforcement II (9.4).
5. shock absorber user terminal rubber assembly Mechanics Performance Testing device as claimed in claim 1, it is characterised in that the biography
Power framework (4) lower frame has the flash structure (4.1) extended laterally, and exciting displacement transducer (22) upper end passes through overlap
Structure (4.1) is connected with power transmission framework (4)；Exciting displacement transducer (22) lower end passes through road conditions lower drawing piece (28) and lower lift ring
(24) it is connected.
6. shock absorber user terminal rubber assembly Mechanics Performance Testing device as claimed in claim 5, it is characterised in that the road
Condition lower drawing piece (28) is L-type platy structure, is installed with orthogonal first when III (28.1) and second are installed III
(28.2), first side III (28.1) are installed on lower lift ring (24), exciting displacement transducer (22) lower end is arranged on second
Install on side III (28.2)；Second install side III (28.2) on be connected with exciting displacement transducer (22) lower end position suppress add
Strengthening tendons III (28.3).
7. shock absorber user terminal rubber assembly mechanic property test method, using the vibration damping as described in claim any one of 1-6
Device user terminal rubber assembly Mechanics Performance Testing device, it is characterised in that be specially：
A. vibration damper complement damping force is tested using pull pressure sensor, the damping force includes absorber damping force and vibration damping
Device compression damping power；
B. simultaneously using minute displacement sensor (7) by measuring the vertical movement of shock absorber user terminal, i.e., to install bushing total for measurement
The deformation produced into (11) and lower damping block (12) assembly by stress；
C. exciting displacement transducer (22) measurement lower lift ring (24) vertical movement rule is utilized simultaneously；
Pull pressure sensor (2) surveys absorber damping force and surveys installation bush Assembly (11) with minute displacement sensor (7)
Deformation construction installation bush Assembly mechanical property；Pull pressure sensor (2) surveys absorber damping force and exciting displacement
Sensor (22) surveys the external characteristics that lower lift ring vertical movement rule constitutes absorber stroke；
Pull pressure sensor (2) surveys shock absorbers compression damping force and surveys down damping block (12) deformation with minute displacement sensor (7)
Constitute lower damping block mechanical property；Pull pressure sensor (2) surveys shock absorbers compression damping force and exciting displacement transducer
(22) external characteristics that the vertical movement of lower lift ring 24 rule constitutes shock absorbers compression stroke is surveyed.
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