CN102901642A - Positional parameter testing experiment table for front suspension with double cross arms - Google Patents
Positional parameter testing experiment table for front suspension with double cross arms Download PDFInfo
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Abstract
The invention discloses a positional parameter testing experiment table for a front suspension with double cross arms. The length of a retractable upper/lower cross arm, the length of a kingpin, the position and the length of a steering knuckle arm, the length of a steering transverse draw bar, a kingpin caster angle and a camber angle are adjusted to set values by the experiment table; a wheel upward/downward jumping movement table moves vertically, so that relations between the upward/downward jumping amount of wheels and the variable quantity of the kingpin caster angle, between the upward/downward jumping amount of the wheels and the variable quantity of a kingpin inclination angle, between the upward/downward jumping amount of the wheels and the variable quantity of wheelspan and between the upward/downward jumping amount of the wheels and the variable quantity of a toe-in angle are obtained; the relation between the variable quantity of the position of a gear rack and the change of corners of the wheels is obtained by moving a steering engine; and data of three displacement sensors are transmitted into an upper computer, so that a required relational graph is obtained, and the data are stored and then are displayed on an interface. The positional parameter testing experiment table for the front suspension with the double cross arms has the advantages that the relations between the variable quantity of the camber angle and the upward/downward jumping amount of the wheels, between the variable quantity of the kingpin caster angle and the upward/downward jumping amount of the wheels, between the variable quantity of the toe-in angle and the upward/downward jumping amount of the wheels and between the variable quantity of the wheelspan and the upward/downward jumping amount of the wheels can be measured respectively; and the relation between the variable quantity of the position of the steering gear rack and the variable quantity of a steering angle is obtained.
Description
Technical field
The present invention relates to the automobile engineering field, be specifically related to a kind of pair of transverse arm front suspension positional parameter test experiments platform system.
Background technology
Suspension system is an important component part of automobile, and the performance of automotive suspension is the key factor that affects vehicle running smoothness, control stability and travel speed.Therefore, the design novel suspending bracket is optimized original suspension, and making suspension property reach optimum state is the only way of improving suspension property.
According to the design feature of guiding mechanism, automotive suspension can be divided into rigid axle suspension and independent suspension two large classes.In independent suspension, the outstanding advantages of double wishbone suspension is the dirigibility that designs, the position of pin joint that can be by choose reasonable steric direction leverage and the length of guide arm, so that suspension has suitable kinetic characteristic (that is when wheel hop or body roll, the variation of wheel orientation angle, wheelspan and the interference of steering can be satisfied the requirement of design) as far as possible.
The twin axle obliquity sensor is the two-dimentional obliquity sensor of a kind of high precision, Low Drift Temperature, sensor with data readout, and this product can be measured sensor degree of tilt with respect to the horizontal plane.With the appropriate location of this installation of sensors at wheel, can directly obtain the camber angle of wheel and the back rake angle of stub, and then can obtain kingpin inclination by converting.
The value of the Front wheel Alignment Parameters such as kingpin castor angle, kingpin inclination, camber angle, toeing-in angle is to the usability of automobile, and especially control stability has a great impact.During design double wishbone suspension mechanism, must guarantee that Front wheel Alignment Parameters and Changing Pattern thereof are conducive to improve the control stability of automobile.In addition, during the wheel bob, the wheelspan significant change that do not have.For the ocular demonstration suspension guide mechanism on the impact that wheel alignment parameter changes, designed a kind of mechanism parameter easy to adjust, be applicable to the experimental facilities of two transverse arm front suspension guiding mechanism kinematic parameter test analysis, and similar products are not arranged at present.
Summary of the invention
Technical matters to be solved by this invention is to propose a kind of pair of transverse arm front suspension positional parameter test experiments stand, can need to change arbitrarily the pin joint position of guiding leverage and the length of guide arm by design, detect when the wheel up/down is beated under different pin joints position and the guide arm length, the variation of toe-in, wheelspan, camber angle, reverse caster angular dimensions, simultaneously research steering is that parameter changes the impact on steering behaviour, for the optimal design of two transverse arm front suspensions provides foundation.
For achieving the above object, the technical solution used in the present invention is:
The invention provides a kind of pair of transverse arm front suspension positional parameter test experimental bed, this experiment table comprises toe-in angle measure of the change assembly, wheel up/down beat displacement measurement assembly, wheelspan measure of the change assembly, kingpin castor angle and camber angle measure of the change assembly, rack-and-pinion location measurement unit, variable element double wishbone suspension, variable element steering and data acquisition display system; Scalable up/down transverse arm length, stub length, knuckle arm position and length, track rod length, kingpin castor angle and camber angle are adjusted to setting value, the beat vertical displacement of transfer table of mobile wheel up/down obtains wheel up/down jerk value and kingpin castor angle variable quantity, kingpin inclination angle variable quantity, wheelspan variable quantity, toe-in angle variation the relationship between quantities; Mobile steering box, acquisition be relation between rack-and-pinion location variation and wheel steering angle change; Three displacement transducers are transported to signal in the host computer by RS232/USB by RS485/USB, obliquity sensor by data collecting card, optical encoder, obtain required graph of a relation, and data are preserved, and are shown to the interface.
Described variable element double wishbone suspension is that a mount pad and upper cross arm bracket connect firmly, upper cross arm bracket and fixedly hanger connect firmly and consist of a fixed support, serve as the two tie points of transverse arm front suspension Top Crossbeam on vehicle frame; The three-dimensional transfer table in mount pad and lower cross arm hard spot place connects firmly, the three-dimensional transfer table in lower cross arm hard spot place and fixedly hanger connect firmly, serve as the two tie points of transverse arm front suspension lower cross arm on vehicle frame, this tie point position spatially can change by the adjusting of the three-dimensional mobile station apparatus in lower cross arm hard spot place.One end of upper and lower transverse arm connects with the shank of oscillating bearing respectively, and the other end is spirally connected with fixing hanger respectively and forms a revolute pair, serve as the up/down swing arm of two transverse arm front suspensions, and the bar length of swing arm can change within the specific limits according to deviser's intention.The ball-type inner ring of oscillating bearing is connected with the stub extension stem of scalable stub, stub extension stem and toe-in angle measure of the change assembly connect firmly, toe-in angle measure of the change assembly is connected to measure the variation of stub corner with oscillating bearing, on scalable, lower cross arm, fixing hanger, the four-bar mechanism that has connected and composed the variable element double wishbone suspension of scalable stub and oscillating bearing changes scalable stub, on scalable, the position of the three-dimensional transfer table in the length of lower cross arm and lower cross arm hard spot place changes the guide arm length of double wishbone suspension and the relative position of double wishbone suspension up/down swing arm hard spot.
Described scalable stub comprises stub extension stem, laterally four kinds of fixed mounts, knuckle arm guide rail, axletree slide block guide rail, the stub extension stem is the mobile variation that realizes scalable stub length in the axletree slide block guide rail, and the length of stub can change within the specific limits according to deviser's intention.
Described toe-in angle measure of the change assembly comprises scrambler, pole and guide groove, and an end and the scrambler of stub extension stem connect firmly, and scrambler connects firmly with pole again, and pole is coaxial with swing arm, and pole passes guide groove, and guide groove connects firmly with oscillating bearing again; Realize measuring the variation of stub corner, do not affect again the degree of freedom of scalable stub.
The axletree slide block guide rail of described scalable stub is provided with the axletree slide block and forms a sliding pair, but and this sliding pair locking, realize axletree and stub tie point position variable on stub.
Described axletree slide block is parts of wheel and axle assembly, wheel and axle assembly also comprise the axletree, locking ball of strip slip-collar and with the wheel model on plane, axletree one end of strip slip-collar with connect firmly with the wheel model on plane, and strip slip-collar end clip is clipped on the pole of axletree slide block, form a revolute pair, the realization axletree is variable with respect to the stub angle, but this revolute pair locking, the size of control camber angle.
Described kingpin castor angle and camber angle measure of the change assembly connect firmly on the wheel model with the plane, kingpin castor angle and camber angle measure of the change assembly are comprised of the two degrees of freedom obliquity sensor, measure camber angle and kingpin castor angle, obtain kingpin inclination, camber angle and these positional parameters of kingpin castor angle by converting.
Described variable element steering, be scalable and serve as the knuckle arm of double wishbone suspension steering system with the variable knuckle arm of stub link position, scalable track rod serves as the track rod of double wishbone suspension steering system, scalable and be connected ball pivot with track rod with the variable knuckle arm of stub link position and be connected with steering box, form the steering of two transverse arm front suspensions.
The clip of knuckle arm one end is clipped on the arbitrary knuckle arm guide rail of scalable stub, realize knuckle arm position changeable on stub, its other end connects with turning to horizontal drawing by ball pivot, track rod is connected with steering box by ball pivot again, is combined into a knuckle arm and the adjustable length steering of track rod.
Described steering box and steering gear bracket connect firmly, the three-dimensional transfer table of steering gear bracket and steering box connects firmly, the three-dimensional transfer table of steering box connects firmly with mount pad again, the position assurance by changing the three-dimensional transfer table of steering box knuckle arm and track rod length and location have a suitable tie rod linkage when changing.
Described rack-and-pinion location measurement unit is comprised of a displacement transducer and brace, wherein displacement transducer directly connects firmly on steering gear bracket, brace one end and steering box connect firmly, and the other end and displacement transducer connect firmly, and realize the position of any time measurement steering box.
Beat displacement measurement assembly and wheelspan measure of the change assembly of described wheel up/down connects firmly on the wheel up/down is beated transfer table, and beat transfer table and mount pad of wheel up/down connects firmly.
The described wheel up/down displacement measurement assembly of beating is comprised of a displacement transducer and a brace, displacement transducer and the wheel up/down transfer table base of beating connects firmly, brace one end and displacement transducer connect firmly, the beat loading seat of transfer table of the other end and wheel up/down connects firmly, and measures the variation of wheel up/down transfer table loading seat vertical direction position.
Wheelspan measure of the change assembly is comprised of displacement transducer and crosshead shoe, displacement transducer and the wheel up/down transfer table of beating connects firmly, its measuring section again with crosshead shoe in one group of slide block connect firmly, the crosshead shoe top planes has a shallow sphere, locking ball has half to drop in the shallow sphere just, supporting the wheel model with the plane, realize the neither degree of freedom of limiting wheel, can measure again the wheel up/down and beat the transfer table vertical direction when moving the simulated roadway unevenness, be wheel up/down when beating, the variable quantity of wheelspan.
Superior effect of the present invention is: two transverse arm four-bar mechanisms of variable element of the present invention and the steering mechanism of variable element, determine the parameter of one group of two transverse arm front suspension according to the deviser, the beat vertical displacement of transfer table of mobile wheel up/down, band motor car wheel bob, because the four-bar mechanism inherent attribute of two transverse arm front suspensions and the interference effect of track rod are by kingpin castor angle and camber angle measure of the change assembly, toe-in angle measure of the change assembly, wheelspan measure of the change assembly records respectively camber angle, kingpin castor angle, relation between the variable quantity that toeing-in angle and Wheel centre distance are beated with the wheel up/down; Perhaps moving rotating is put to the seat in the plane, by rack-and-pinion location measurement unit and toe-in angle measure of the change assembly, obtains the relation between tooth sector tooth bar location variation and the steering angle change amount.
Description of drawings
The physical construction of the two transverse arm front suspension positional parameter test experimental beds of Fig. 1 the present invention is arranged synoptic diagram;
The structural representation of the scalable stub of Fig. 2 the present invention;
The structural representation of Fig. 3 toe-in angle measure of the change of the present invention assembly;
The structural representation of Fig. 4 wheel of the present invention and axle assembly
Fig. 5 schematic block circuit diagram of the present invention;
The number in the figure explanation
1-kingpin castor angle and camber angle measure of the change assembly;
2-toe-in angle measure of the change assembly;
201-scrambler; 202-pole;
203-guide groove;
3-oscillating bearing;
4-scalable stub;
401-master lock extension stem; 402-laterally fixed mounts;
403-knuckle arm guide rail; 404-axletree rail plate;
5-ball pivot; 6-knuckle arm;
7-scalable Top Crossbeam; 8-upper cross arm bracket;
9-fixedly hangers; 10-scalable lower cross arm;
The three-dimensional transfer table in 11-lower cross arm hard spot place; 12-track rod;
13-ball pivot; 14-steering box;
15-steering gear bracket; 16-rack-and-pinion location measurement unit;
The three-dimensional transfer table of 17-rack-and-pinion steering wheel; 18-mount pad;
19-wheel up/down transfer table of beating; 20-wheel up/down displacement measurement assembly of beating;
21-wheelspan measure of the change assembly;
22-wheel and axletree model;
2201-axletree slide block; The axletree of 2202-strip slip-collar;
2203-locking ball; 2204-with the wheel model on plane.
Embodiment
See also shown in the accompanying drawing, the invention will be further described.
As shown in Figure 1, the invention provides a kind of pair of transverse arm front suspension positional parameter test experimental bed, this experiment table comprises toe-in angle measure of the change assembly 2, wheel up/down beat displacement measurement assembly 20, wheelspan measure of the change assembly 21, kingpin castor angle and camber angle measure of the change assembly 1, rack-and-pinion location measurement unit 16, variable element double wishbone suspension, variable element steering and data acquisition display system; Scalable up/down transverse arm 7,10 length, stub length, knuckle arm 6 positions and length, track rod 12 length, kingpin castor angle and camber angle are adjusted to setting value, the beat vertical displacement of transfer table 18 of mobile wheel up/down obtains wheel up/down jerk value and kingpin castor angle variable quantity, kingpin inclination angle variable quantity, wheelspan variable quantity, toe-in angle variation the relationship between quantities; Mobile steering box 14, acquisition be relation between rack-and-pinion location variation and wheel steering angle change; Three displacement transducers are transported to signal in the host computer by RS232/USB by RS485/USB, obliquity sensor by data collecting card, optical encoder, obtain required graph of a relation, and data are preserved, and are shown to the interface.
Shown in Figure 1, mount pad 18 connects firmly with upper cross arm bracket 8, and upper cross arm bracket 8 connects firmly with fixing hanger 9 again, forms a fixed support, serves as pair tie points of transverse arm front suspension top link on vehicle frame.Mount pad 18 connects firmly with the three-dimensional transfer table 11 in lower cross arm hard spot place, the three-dimensional transfer table 11 in lower cross arm hard spot place connects firmly with fixing hanger 9 again, serve as the two tie points of transverse arm front suspension lower swing arm on vehicle frame, this tie point position spatially can change by the adjusting of the three-dimensional transfer table 11 in lower cross arm hard spot place.Scalable Top Crossbeam 7 be connected an end of lower cross arm 10 and be connected with the shank of oscillating bearing 3, the other end is connected by bolt (not shown in FIG.) with fixing hanger 9; Scalable up/down transverse arm 7,10 and fixedly hanger 9 be bolted and can form a revolute pair, serve as the up/down swing arm of two transverse arm front suspensions, and the bar length of up/down swing arm can change within the specific limits according to deviser's intention.The ball-type inner ring of oscillating bearing 3 connects firmly with the stub extension stem of the scalable stub 4 that serves as two transverse arm front suspension stubs.
By shown in Figure 2, scalable stub 4 is made of stub extension stem 401, horizontal fixed mount 402, knuckle arm guide rail 403,404 4 kinds of parts of axletree slide block guide rail.Stub extension stem 401 is the mobile variation that realizes scalable stub 4 length in axletree slide block guide rail 404, and wherein the length of stub can change within the specific limits according to deviser's intention.One end of the stub extension stem 401 of scalable stub 4 and toe-in angle measure of the change assembly 2 connect firmly, as shown in Figure 3, toe-in angle measure of the change assembly 2 is comprised of scrambler 201, pole 202, guide groove 203, stub extension stem 401 connects firmly with scrambler 201, scrambler 201 connects firmly 202 with pole again, and pole 202 is coaxial with swing arm; Pole passes guide groove 203, and guide groove 203 connects firmly with oscillating bearing again; Realization can be measured the variation of stub corner, does not affect again the degree of freedom of scalable stub 4.Above-mentioned fixedly hanger 9, scalable stub 4, scalable up/down transverse arm 7,10 connections of being connected with oscillating bearing namely consist of the four-bar mechanism of two transverse arm front suspensions; But length that can be by changing scalable stub 4 reduction up/down transverse arms 7,10 and the position that changes the three-dimensional transfer table 11 in lower cross arm hard spot place can change the parameter of this four-bar mechanism, namely change the guide arm length of double wishbone suspension and the relative position of double wishbone suspension up/down swing arm hard spot.
As shown in Figure 4, wheel and axle assembly 22 are by the axletree 2202 of axletree slide block 2201, strip slip-collar, locking ball 2203, form with 2,204 four parts of wheel model on plane.Axletree slide block 2201 can slide at axletree slide block guide rail 404 and form a sliding pair, but and this sliding pair locking, realize axletree and stub tie point position variable on stub; Axletree 2,202 one ends of strip slip-collar with connect firmly with the wheel model 2204 on plane, and the clip of strip slip-collar end is clipped on the pole of axletree slide block 2201, forms a revolute pair, and the realization axletree is variable with respect to the stub angle, this revolute pair can locking, the size of controlled wheel made camber angle.Kingpin castor angle and camber angle measure of the change assembly 1 connect firmly on the wheel model 2204 with the plane, kingpin castor angle and camber angle measure of the change assembly 1 are comprised of the two degrees of freedom obliquity sensor, measure camber angle and kingpin castor angle, can obtain these positional parameters of kingpin inclination, camber angle and kingpin castor angle by converting.Scalable and serve as the knuckle arm of two transverse arm front suspensions with the variable knuckle arm 6 of stub link position, the clip of one end is clipped on the arbitrary knuckle arm guide rail 403 of scalable stub 4, realize knuckle arm position changeable on stub, its other end is by ball pivot 5 and scalable track rod 12, scalable track rod 12 is connected with pinion-and-rack steering engine 14 by ball pivot 13 again, is combined into a knuckle arm and the adjustable length steering of track rod.Pinion-and-rack steering engine 14 connects firmly with pinion-and-rack steering engine support 15, pinion-and-rack steering engine support 15 connects firmly with the three-dimensional transfer table 17 of pinion-and-rack steering engine, the three-dimensional transfer table 17 of pinion-and-rack steering engine connects firmly with mount pad 18 again, can guarantee that by the position that changes the three-dimensional transfer table 17 of pinion-and-rack steering engine knuckle arm and track rod length and location still have a suitable tie rod linkage when changing.Rack-and-pinion location measurement unit 16 is comprised of a displacement transducer and brace, wherein displacement transducer directly connects firmly on pinion-and-rack steering engine support 15, brace one end and gear gear steering box 14 connect firmly, the other end and displacement transducer connect firmly, and realize the position that any time is all measured pinion-and-rack steering engine 14.Mount pad 18 and the wheel up/down transfer table 19 of beating connects firmly, and beat displacement measurement assembly 20 and wheelspan measure of the change assembly 21 of wheel up/down connects firmly on the wheel up/down is beated transfer table 19.The wheel up/down displacement measurement assembly 20 of beating is comprised of a displacement transducer and a brace, displacement transducer and wheel up/down transfer table 19 bases of beating connect firmly, brace one end and displacement transducer connect firmly, the beat loading seat (not shown in FIG.) of transfer table 19 of the other end and wheel up/down connects firmly, and can measure the variation of wheel up/down transfer table 19 loading seat vertical direction positions; Wheelspan measure of the change assembly 21 is comprised of displacement transducer and crosshead shoe, displacement transducer and the wheel up/down transfer table 19 of beating connects firmly, its measuring section again with crosshead shoe in one group of slide block connect firmly, crosshead shoe (not shown in FIG.) top planes has a shallow sphere, locking ball 2203 has half to drop in the shallow sphere just, supporting wheel model 2204, thereby realize namely the not degree of freedom of limiting wheel, can measure again the wheel up/down and beat transfer table 19 vertical directions when moving the simulated roadway unevenness, be wheel up/down when beating, wheelspan is variable quantity.Shown in Figure 5, three displacement transducers are transported to signal in the host computer by RS232/USB by RS485/USB, obliquity sensor by data collecting card, optical encoder, obtain the graph of a relation of needs, and data are preserved.
Experimentation is for to adjust to the needed value of deviser with up/down transverse arm length, stub length, knuckle arm position and length, track rod length, kingpin castor angle and camber angle.The mobile wheel up/down vertical displacement of transfer table 19 of beating wherein just can obtain wheel up/down jerk value and kingpin castor angle variable quantity, kingpin inclination angle variable quantity, wheelspan variable quantity, toe-in angle change the relationship between quantities by data acquisition system (DAS); And carrier wheel tooth bar steering box 14, acquisition be relation between rack-and-pinion location variation and wheel steering angle change.
Claims (14)
1. two transverse arm front suspension positional parameter test experimental beds is characterized in that: this experiment table comprises toe-in angle measure of the change assembly, wheel up/down beat displacement measurement assembly, wheelspan measure of the change assembly, kingpin castor angle and camber angle measure of the change assembly, rack-and-pinion location measurement unit, variable element double wishbone suspension, variable element steering and data acquisition display system; Scalable up/down transverse arm length, stub length, knuckle arm position and length, track rod length, kingpin castor angle and camber angle are adjusted to setting value, the beat vertical displacement of transfer table of mobile wheel up/down obtains wheel up/down jerk value and kingpin castor angle variable quantity, kingpin inclination angle variable quantity, wheelspan variable quantity, toe-in angle variation the relationship between quantities; Mobile steering box, acquisition be relation between rack-and-pinion location variation and wheel steering angle change; The data acquisition display system is with the data acquisition of each variable quantity and be sent to upper seat in the plane and preserve, and is shown to the interface.
2. according to claim 1 pair of transverse arm front suspension positional parameter test experimental bed, it is characterized in that: described variable element double wishbone suspension, that a mount pad and upper cross arm bracket connect firmly, upper cross arm bracket and fixedly hanger connect firmly and consist of a fixed support, serve as the two tie points of transverse arm front suspension Top Crossbeam on vehicle frame; The three-dimensional transfer table in mount pad and lower cross arm hard spot place connects firmly, and the three-dimensional transfer table in lower cross arm hard spot place connects firmly with fixing hanger, serves as pair tie points of transverse arm front suspension lower cross arm on vehicle frame; One end of upper and lower transverse arm is connected with the shank of oscillating bearing respectively, and the other end is spirally connected with fixing hanger respectively and forms a revolute pair; The ball-type inner ring of oscillating bearing is connected with the stub extension stem of scalable stub, stub extension stem and toe-in angle measure of the change assembly connect firmly, toe-in angle measure of the change assembly is connected to measure the variation of stub corner with oscillating bearing, on scalable, lower cross arm, fixing hanger, the four-bar mechanism that has connected and composed the variable element double wishbone suspension of scalable stub and oscillating bearing changes scalable stub, on scalable, the position of the three-dimensional transfer table in the length of lower cross arm and lower cross arm hard spot place changes the guide arm length of double wishbone suspension and the relative position of double wishbone suspension up/down swing arm hard spot.
3. according to claim 2 pair of transverse arm front suspension positional parameter test experimental bed, it is characterized in that: described scalable stub comprises stub extension stem, laterally four kinds of fixed mounts, knuckle arm guide rail, axletree slide block guide rail, and the stub extension stem is the mobile variation that realizes scalable stub length in the axletree slide block guide rail.
4. according to claim 1 and 2 pair of transverse arm front suspension positional parameter test experimental bed, it is characterized in that: described toe-in angle measure of the change assembly comprises scrambler, pole and guide groove, one end and the scrambler of stub extension stem connect firmly, scrambler connects firmly with pole again, and pole is coaxial with swing arm, pole passes guide groove, and guide groove connects firmly with oscillating bearing again; Realize measuring the variation of stub corner, do not affect again the degree of freedom of scalable stub.
5. according to claim 3 pair of transverse arm front suspension positional parameter test experimental bed, it is characterized in that: the axletree slide block guide rail of described scalable stub is provided with the axletree slide block and forms a sliding pair, but and this sliding pair locking, realize axletree and stub tie point position variable on stub.
6. according to claim 5 pair of transverse arm front suspension positional parameter test experimental bed, it is characterized in that: described axletree slide block is parts of wheel and axle assembly, wheel and axle assembly also comprise the axletree, locking ball of strip slip-collar and with the wheel model on plane, axletree one end of strip slip-collar with connect firmly with the wheel model on plane, the clip of strip slip-collar end is clipped on the pole of axletree slide block, form a revolute pair, the realization axletree is variable with respect to the stub angle, but this revolute pair locking, the size of control camber angle.
7. according to claim 1 pair of transverse arm front suspension positional parameter test experimental bed, it is characterized in that: described kingpin castor angle and camber angle measure of the change assembly connect firmly on the wheel model with the plane, kingpin castor angle and camber angle measure of the change assembly are comprised of obliquity sensor, measure camber angle and kingpin castor angle, obtain kingpin inclination, camber angle and these positional parameters of kingpin castor angle by converting.
8. according to claim 1 pair of transverse arm front suspension positional parameter test experimental bed, it is characterized in that: described variable element steering, be scalable and serve as the knuckle arm of double wishbone suspension steering system with the variable knuckle arm of stub link position, track rod serves as the track rod of double wishbone suspension steering system, scalable and be connected ball pivot with track rod with the variable knuckle arm of stub link position and be connected with steering box, form the steering of two transverse arm front suspensions.
9. according to claim 8 pair of transverse arm front suspension positional parameter test experimental bed, it is characterized in that: the clip of knuckle arm one end is clipped on the arbitrary knuckle arm guide rail of scalable stub, realize knuckle arm position changeable on stub, its other end connects with turning to horizontal drawing by ball pivot, track rod is connected with steering box by ball pivot again, is combined into a knuckle arm and the adjustable length steering of track rod.
10. according to claim 9 pair of transverse arm front suspension positional parameter test experimental bed, it is characterized in that: described steering box and steering gear bracket connect firmly, the three-dimensional transfer table of steering gear bracket and steering box connects firmly, the three-dimensional transfer table of steering box connects firmly with mount pad again, the position assurance by changing the three-dimensional transfer table of steering box knuckle arm and track rod length and location have a tie rod linkage when changing.
11. according to claim 1 pair of transverse arm front suspension positional parameter test experimental bed, it is characterized in that: described rack-and-pinion location measurement unit is comprised of a displacement transducer and brace, wherein displacement transducer directly connects firmly on steering gear bracket, brace one end and steering box connect firmly, the other end and displacement transducer connect firmly, and realize the position of any time measurement steering box.
12. according to claim 1 pair of transverse arm front suspension positional parameter test experimental bed, it is characterized in that: beat displacement measurement assembly and wheelspan measure of the change assembly of described wheel up/down connects firmly on the wheel up/down is beated transfer table, and beat transfer table and mount pad of wheel up/down connects firmly.
13. according to claim 12 pair of transverse arm front suspension positional parameter test experimental bed, it is characterized in that: the described wheel up/down displacement measurement assembly of beating is comprised of a displacement transducer and a brace, displacement transducer and the wheel up/down transfer table base of beating connects firmly, brace one end and displacement transducer connect firmly, the beat loading seat of transfer table of the other end and wheel up/down connects firmly, and measures the variation of wheel up/down transfer table loading seat vertical direction position.
14. according to claim 12 pair of transverse arm front suspension positional parameter test experimental bed, it is characterized in that: wheelspan measure of the change assembly is comprised of displacement transducer and crosshead shoe, displacement transducer and the wheel up/down transfer table of beating connects firmly, its measuring section again with crosshead shoe in one group of slide block connect firmly, the crosshead shoe top planes has a shallow sphere, locking ball has half to drop in the shallow sphere just, supporting the wheel model with the plane, realize the neither degree of freedom of limiting wheel, can measure again the wheel up/down and beat the transfer table vertical direction when moving the simulated roadway unevenness, be wheel up/down when beating, wheelspan is variable quantity.
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| CN104180788B (en) * | 2013-05-21 | 2017-02-22 | 臻越自动化技术（上海）有限公司 | Testing device for steering engine and testing method thereof |
| CN104180788A (en) * | 2013-05-21 | 2014-12-03 | 臻越自动化技术（上海）有限公司 | Testing device for steering engine and testing method thereof |
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| CN106908257B (en) * | 2017-02-27 | 2019-02-19 | 安徽江淮汽车集团股份有限公司 | Steering test bench |
| CN109263423B (en) * | 2018-10-25 | 2021-12-07 | 北京航天发射技术研究所 | Independent suspension guide mechanism and test device and method thereof |
| CN109263423A (en) * | 2018-10-25 | 2019-01-25 | 北京航天发射技术研究所 | A kind of independent suspension guiding mechanism and its test device and method |
| KR102167801B1 (en) * | 2019-10-29 | 2020-10-19 | 서한산업(주) | A zig module for testing wheel support device of a vehicle |
| CN111429789A (en) * | 2020-05-07 | 2020-07-17 | 覃琦 | Double-cross arm suspension model teaching aid |
| CN111660744A (en) * | 2020-06-22 | 2020-09-15 | 浙江吉利新能源商用车集团有限公司 | Wheel adjusting method and system |
| CN111811449A (en) * | 2020-09-03 | 2020-10-23 | 杭州集智机电股份有限公司 | Shaft part jumping detection mechanism and detection method capable of automatically eliminating spindle error |
| CN112581824A (en) * | 2020-12-30 | 2021-03-30 | 覃琦 | Disconnected auto steering system wheel corner relation teaching aid |
| CN112834245A (en) * | 2021-01-04 | 2021-05-25 | 东风商用车有限公司 | Front axle camber and toe-in change detection device and method |
| CN112834245B (en) * | 2021-01-04 | 2022-06-10 | 东风商用车有限公司 | Front axle camber and toe-in change detection device and method |
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