CN1570589A - Chassis test bench for cars - Google Patents
Chassis test bench for cars Download PDFInfo
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- CN1570589A CN1570589A CN 200410038977 CN200410038977A CN1570589A CN 1570589 A CN1570589 A CN 1570589A CN 200410038977 CN200410038977 CN 200410038977 CN 200410038977 A CN200410038977 A CN 200410038977A CN 1570589 A CN1570589 A CN 1570589A
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Abstract
This invention discloses a car chassis test bed which can check car performances such as braking, sliding, steering, positioning for front and rear wheel. The equipment is integrally located above the ground. It comprises brake platform, lifting platform, left and right checking pan, linking bridge, approach bridge, computer and operating console. The brake platform belongs to the minute wheel, roll, and inertia type and is composed of four rolls and is driven by a induction alternating current motor through a belt pulley and a clutch. And there is a guard against the wheel dropping out of the roll. There is a rail on the lifting platform to be used for the longitudinal parallel move of the checking pan. The checking pan is composed of longitudinal pulley, transverse pulley and dip meter.
Description
Affiliated technical field
The present invention relates to detect automobile chassis performance detection equipment, especially car chassis testing platform.
Background technology
Along with the rapid increase of domestic car recoverable amount, dolly guarantee enterprise and the also proportional increase of portfolio, wherein, braking system is maximum workload with turning to the guarantee operation that is.Owing to do not allow the test run of setting out on a journey now, simultaneously also in order increasing work efficiency, to finish braking, slide, to turn to, the test of content such as front and back wheel location detects, and becomes pacing items and requirement that dolly is guaranteed to keep in good repair enterprise at operation field.But at present at home, even the motor vehicle inspection station of specialty does not reach above-mentioned condition yet, as brake test, at present domestic is whole-colored anti-force type brake platform, maximum braking force in the time of can only detecting wheel lock up, the priority speed that can not reflect braking overall process and each wheel braking, can not testing equipment the automobile brake situation of anti-lock braking system ABS; The coasting test of and for example concentrated expression automotive transmission resistance will just can be finished with chassis dynamometer, and which kind of is big for this equipment, investment is big, and enterprise is difficult to bear.
Summary of the invention
In order to overcome above-mentioned deficiency, the invention provides a kind of car chassis testing platform that can detect performances such as car is braked, slides, turned to, front and back wheel location.
The technical solution adopted for the present invention to solve the technical problems is: described car chassis testing platform integral body places above the ground, an end that connects bridge is connected on the back bridge chair 7 of brake platform, one end is connected on the middle bridge chair 17 of lifting table, one end of access bridge is connected on the preceding bridge chair 19 of lifting table, one end places ground, the detection dish (my utility model patent, the patent No. is: 92236316.1) be placed on the lifting table, wherein:
Brake platform: pedestal 1 fixes on the ground, on pedestal 1, be provided with four cylinders 2, two master rotors 2 through clutch coupling 5, belt pulley 4 by motor-driven, on the lifting jack 6 before and after the 3rd cylinder 3 places between the cylinder 2, lifting jack 6 is provided with LOAD CELLS, respectively be provided with railing 20 at two auxiliary cylinder 2 places, 6 of railing 20 and lifting jacks are provided with tension board, and optical disc 8 is equipped with in two auxiliary cylinders 2 and the 3rd cylinder 3 the inners;
Lifting table: lifting table places hydraulic cylinder 12 tops, and hydraulic cylinder 12 is provided with hydraulic efficiency synchronous mechanism, and the lifting table table top is provided with grooved tracks 11, and 11 of grooved tracks have the wheelbase scale;
Connect bridge: transfer at the long beam 14 that connects bridge and be provided with load stake 16;
Access bridge: short beam 18 earth terminals of access bridge fix on the ground with foot bolt.
Be provided with revetment 15 and revetment 10 at connection bridge and lifting table both sides.(my utility model patent, the patent No. is the detection dish: 92236316.1) be placed on the lifting table.
The invention has the beneficial effects as follows, combine the function of inertia type brake tester, the heavy check-out console of axle, speedometer check-out console, corner instrument, four-wheel position finder, lifting stand, the equipment one-machine-multi-function has floor area, applied widely, many, the accuracy of detection advantages of higher of detection content.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a vertical view of the present invention;
Fig. 2 is a front view of the present invention;
Fig. 3 is the vertical view of detection dish of the present invention;
Fig. 4 is the front view of detection dish of the present invention;
1. pedestals among the figure, 2. cylinder, 3. the 3rd cylinder, 4. belt pulley, 5. clutch coupling, 6. lifting jack, 7. back bridge chair, 8. optical disc, 9. platform, 10. revetment, 11. tracks, 12. hydraulic cylinders, 13. crossbeam, 14. long beams, 15. revetments, 16. load stakes, 17. middle bridge chair, 18. short beams, 19. preceding bridge chairs, 20. block bar, 21. anti-rejection stake, 22. dolly wheels, 23. beam axles, 24. post and lintels, 25. base plate, 26. collude bar, 27. position locking devices, 28. wheels, 29. the beam axle, 30. base plates, 31. finger plates, 32. angular transducers, 33. slope board, 34. torsion spring seats, 36. high platforms, 37. columns, 38. column base, 39. spreaders, 40. springs, 41. end into device, 42. axle bed, 43. semiaxis, 44. chi covers, 45. slide rules, 46. down by rule, on 47. by advising 48. angular transducers, 49. screws.
Embodiment
The present invention is made up of brake platform, lifting table, connection bridge, access bridge, detection dish, computer and control desk.Wherein brake platform, lifting table are main body physical construction, and by connecting the bridge serial connection and can allow wheel pass through, access bridge just allows the slope of automobile oscilaltion platform, sees Fig. 1.
1, brake platform.The main stand of braking, coasting test when detection turns to, can be given non-wheel carrying and the location of detecting axle again, is made up of pedestal 1, cylinder group 2, the 3rd cylinder 3, motor and belt pulley 4, clutch coupling 5, lifting jack 6, back bridge chair 7 etc.
1.1, pedestal 1.With four character-shaped bases that channel-section steel is welded into, be carrying be connected brake platform on the basis of all parts.
1.2, cylinder group 2.Form by four separate cylinders, cylinder sizes 318.3 * 420MM, its girth is 1M just in time.Wherein, two masters (back) cylinder by motor-driven, is used for driving the wheel rotation through clutch coupling, belt pulley, and optical disc 8 is equipped with in two pairs (preceding) cylinder rear end, through the pulse signal of the exportable rotating speed of photoelectric sensor (speed of a motor vehicle), girth (distance).
1.3, the 3rd cylinder 3.About each one, between front and back cylinder 2,, head on the extreme higher position that is in stroke by spring at ordinary times with cylinder 2 equalitys and can lifting, if wheel falls, the 3rd cylinder 3 will be depressed and follow wheel between front and back cylinder 2.The 3rd cylinder 3 diameters are little, in light weight, moment of inertia is very little, and optical disc also is equipped with in the inner.
1.4, motor and belt pulley 4.4/8 grade of two-speed motor of a 4KW alternating current impression formula, the master and slave pulley decelerates by ratio of gear 2.83 provides power for master rotor.
1.5, clutch coupling 5.About each one, coaxial with driven pulley and master rotor.
1.6, lifting jack 6.Crossbeam with channel-section steel is welded into traverses brake platform, between front and back cylinder 2, is promoted through LOAD CELLS by beneath hydraulic cylinder.Keep plate also has been installed under the crossbeam, when crossbeam is raised to most significant digit, cylinder 2 has been embraced.4 tension boards are housed on the crossbeam, when crossbeam is raised to most significant digit, bar 20 pull-ups of blocking that are located at auxiliary cylinder place, the place ahead can be come, obstruction may be crossed the wheel of head, and when crossbeam is fallen, blocks 20 on bar can fall, in order to avoid clip the automobile bottom.In addition, on the pedestal at crossbeam two ends, the anti-rejection stake 21 of setting is housed, laterally throws away cylinder 2 in the time of can preventing the wheel high-speed rotation.
1.7, the back bridge chair 7.Be used for fixing the channel-section steel seat that connects bridge, this seat is welded on the pedestal 1.
2, lifting table.Turn to the main platform of detection, when the braking coasting test, can carry another wheel again and make the car load horizontal.Form by platform 9, revetment 10, track 11, hydraulic cylinder 12, hydraulic efficiency synchronous mechanism etc.
2.1, platform 9.Left and right two tracks that are welded into channel-section steel and angle steel, each long 1660MM, wide 460MM, two tracks 940MM of being separated by, be connected as a single entity with crossbeam at two, front and back, it is separate platforms 9 that two crossbeams 13 can therefrom be taken apart, to reduce the equipment boxed-in area, is convenient to transportation.Platform 9 provides lifting power, stroke 129MM by four hydraulic cylinders 12 that are arranged in four jiaos.
2.2, revetment 10.Article two, the steel plate enclosure wall is equipped with in the inboard in track, prevents that wheel from deflecting away from the track.
2.3, track 11.Lay long steel plate bar on the face of track, form the recessed road on the track, two equalitys promptly become pair of tracks 11 in the recessed road of 300MM at interval, and the vertical coaster that supplies the detection dish is along the track straight-line travelling.All have on every track interior, in, outer three pairs of tracks, can be according to different automobile wheel tracks and wheel the position on the track, the track 11 of selecting the detection dish to enter.In addition, on the face of track the wheelbase scale is arranged.
2.4, hydraulic cylinder 12.Totally four, other has four electromagnetism oil return valves to control each hydraulic cylinder 12 oil returns decline respectively, and four electrical plunger pumps are controlled each hydraulic cylinder 12 pumps oil respectively and risen.
2.5, hydraulic efficiency synchronous mechanism.Form by code translator and a plurality of tilt switch, relay.When platform four angle height in lifting process differ, be that platform is when having inclination, certain tilt switch will send signal, after deciphering at the fastest hydraulic cylinder 12 of rising or falling speed, control the electrical plunger pump or the electromagnetism oil return valve of this cylinder by relay, allow its rising or falling speed that slows down, make whole platform 9 horizontal synchronization liftings.
3, connect bridge.The bridge-type track that connects brake platform and lifting table, is made up of long beam 14, revetment 15, load stake 16, middle bridge chair 17 etc. by about branch two.
3.1, long beam 14.Article two, the track main body that is welded into channel-section steel and angle steel, each long 1352MM, wide 436MM, higher one of long beam 14 is fastened on the back bridge chair 7 of brake platform.
3.2, revetment 15.The steel plate enclosure wall that install the both sides, track.
3.3, load stake 16.Because it is bigger to connect the spanning degree,,, establishes stake and to long beam 14 bottoms it is propped up by ground in the centre of span for preventing long beam 14 compressive deformations.
3.4, middle bridge chair 17.The pedestal that channel-section steel is welded into, on the ground fastening with many pieces of foot bolt.Middle bridge chair 17 has three kinds of effects:
3.4.1, long beam 14 is lower one be fastened on the bridge chair 17.
3.4.2, lifting table have 2 hydraulic cylinders 12 be contained on the base plate of bridge chair 17 (in addition 2 at preceding bridge chair), therefore, the part that middle bridge chair 17 is lifting table pedestals (another part is the preceding bridge chair of access bridge).
3.4.3, formed plane positioning with preceding bridge chair 19 to lifting table.
4, access bridge.Be to allow wheel reach the bridge-type slope of lifting table, form by short beam 18, preceding bridge chair 19.
4.1, short beam 18.Article two, the track that is welded into channel-section steel and angle steel, each long 590MM, wide 462MM are ramped shaped and install, and one is fixed on the ground with foot bolt, before the other end is fastened on the bridge chair 19.
4.2, preceding bridge chair 19.The pedestal that channel-section steel is welded into, on the ground fastening with many pieces of foot bolt.Preceding bridge chair 19 is except being used for fixing short beam 18, and other act among 3.4.2 and the 3.4.3 and narrate.
5, detection dish.This is to turn to detect most important system, is divided into left detection dish and right detection dish, and all turn to measuring mechanism all to be installed on the detection dish.Form by vertical coaster, sideslip car, dip meter.Single detection dish weight is little, by manually bringing up to lifting table, sees Fig. 2 when detection turns to.
5.1, vertical coaster.The lorry of cross track is arranged again along lifting table track longitudinal driving and top, divide left and right vertical coaster, by dolly wheel 22, beam axle 23, post and lintel 24, base plate 25, collude bar 26, position locking device 27 etc. and form.
The axle of dolly wheel 22 is two beam axles 23, forms square frame with two post and lintels 24, and 25 of base plates are used for consolidating square frame makes it that plane deformation not take place.Step above the beam axle 23 has formed cross track at the top of square frame, and the sideslip car of keeping supplying face is along the rail cross running.
The effect of colluding bar 26 is to match with the outstanding steps of top sideslip car bottom plate 30, the sideslip car can be travelled along rail but can not derail.Position locking device 27 is straight pins that headed on by spring, and this sells to and stretches out at non-detection status, withstands top sideslip car and finger plate 31 and makes it inactive; This pin withdrawal during detection, sideslip car and finger plate 31 can flexible motion.
5.2, the sideslip car.Along the lorry of vertical coaster top rail cross running, can the measurement plane corner, be divided into left and right sideslip car, form by wheel 28, beam axle 29, base plate 30, positive stop strip, finger plate 31, angular transducer 32, slope board 33, torsion spring seat 34 etc.
The effect of the wheel 28 of sideslip car, beam axle 29, base plate 30 is identical with vertical coaster, be the size difference, and the beam axle does not serve as track.On the base plate 30 between two beam axles 29 of sideslip car, bearing and revolving shaft are housed, the axle center of revolving shaft is exactly the planar central of sideslip car integral body.Finger plate 31 is big disks, is installed in go back to the upper end of dress axle, can flat turn neatly but be limited in ± 45 ° in, angular transducer 32 is housed under the revolving shaft, can send the angle signal that finger plate 31 rotates to computer.
Being installed in positive stop strip below the base plate is used for limiting the sideslip car and does not roll tail track away from.Vertical coaster, sideslip car and finger plate 31 constitute rotary system, and wheel is turned in the above neatly.
When allowing wheel drop on the finger plate 31, the center of landing of wheel is easier to aim at the finger plate center of circle, on finger plate 31 symmetry installation two slope boards 33, form a V-arrangement traverse furrow, in a single day wheel is fallen in this ditch, will drop on the center of finger plate 31 fore-and-aft directions because of action of gravity.There is the scale of symmetry at slope board 33 back sides, are convenient to align with the decorative pattern of symmetry above the tire, make wheel also can aim at the center of finger plate 31 aspect the left and right sides.Torsion spring seat 34 makes it to adapt to the wheel that varies in size for slope board 33 provides the elastic force that reduces the V-arrangement angle.
In addition, the rear side of sideslip car has the wheelspan scale.
5.3, dip meter.Measure the mechanism of the vertical degree of tilt of wheel, be installed in the outer edge of left and right finger plate 31, by high platform 36, column 37, column base 38, spreader 39, spring 40, end into device 41, axle bed 42, semiaxis 43, chi cover 44, slide rule 45, down by rule 46, go up by advise 47, angular transducer 48 etc. and form.
High platform 36, column 37, column base 38 increase height and straight-line guiding are provided for the survey mechanism that inclines, allow spreader 39 be with axle bed 42 straight line advance and retreat in pilot hole, axle bed 42 is supporting bases of surveying the mechanism that inclines, clip chi cover 44 and be through in the axis hole by two semiaxis 43, make chi cover 44 and the cover slide rule 45 inside can vertical among a small circle rotation, the upper/lower terminal of slide rule 45 be equipped with respectively press rim for automobile wheel last 47, down by advising 46.Because of axle bed 42 by the elastic force of spring 40 top to lateral wheel, this elastic force makes slide rule 45 upper and lowerly withstands on upper and lower two places of lateral wheel wheel rim by rule, makes wheel hang down degree of tilt when changing, slide rule 45 and chi cover 44 are also followed the vertical rotation of variation generation.Angular transducer 48 is housed on the axle bed 42, can sends the angle signal of rotation to computer.
Slide rule 45 can slide up and down in chi cover 44, goes up by rule 47 also can slidably reciprocate on slide rule 45, and is upper and lower like this by advising oneself height with mutual edge distance is all variable mutually, and can lock by hand-turn a screw 49, is suitable for the wheel of different-diameter.Have on the slide rule 45 down by the scale of rule 46 height with last 47, down by advising 46 scales of mutual edge distance mutually, can read the radius of tire according to this.
Retreat if manually allow axle bed 42 overcome spring 40 elastic force, retreat to the end and can only be advanced device 41 and block and can not advance, make to survey and incline mechanism, be in non-detection status away from lateral wheel.
6, computer and control desk
6.1, control desk is equipped with the iron sheet cabinet of 4 wheels under being, puts computer cashier's office in a shop, do not detect when turning to, the detection dish is also placed in cashier's office in a shop.There are some control motor, clutch coupling electromagnetism to buckle the button of work on the panel of switch board, and the jack of introducing various signals.Divide upper and lower two layers in the cabinet, the upper strata is the various circuit of DC operation, and lower floor is the electrical equipment of alternate current operation.Control desk has following effect:
6.1.1, motor 4 startings of control brake platform, speed change, outage, the electromagnetism of solenoidoperated cluthes 5 is tipped row in and is threaded off, and clutch coupling 5 is in time separated.
6.1.2, the synchronization lifting of control lifting jack 6, lifting table.
6.1.3, the photosignal to the photosignal of brake pedal signal, auxiliary cylinder, the 3rd cylinder, weighing-up wave, plane angular signal, the degree of tilt signal that hangs down carry out shaping and handle, and sends into computer then.
6.2, computer.Comprise keyboard, can external colorful display screen, printer.Computer mainly contains following effect:
6.2.1, project such as brake, slide, turn to select to brake hard, point, working methods such as correction, debugging, detection are selected.
6.2.2, operation steps and process are pointed out.
6.2.3, the input tested vehicle essential characteristic and relevant data.
6.2.4, various signals that control desk is sent here sample automatically, handle, demonstration, computing.Show, print, transmit testing result.
6.2.5, the relevant data that accesses standard database automatically compares with testing result, and judges whether testing result qualified.Can increase or revise the content of standard database.
Because therefore the mode that testing table adopts minute wheel to detect will be finished Total Test and detect content, tested vehicle must be appeared on the stage for twice, and the concrete course of work is as follows:
1, at ordinary times.Lifting jack 6 on the brake platform rises to most significant digit, and four cylinders 2 are embraced, in order to avoid wheel-slip, auxiliary cylinder top pull-up block bar 20 in case wheel rolls stand away from.Lifting table is reduced to lowest order, and connection bridge and access bridge are fixed, and these conditions all are in order to allow automobile appear on the stage smoothly or to leave office.Identification contents such as the license number of input automobile, vehicle on computor-keyboard.
2, appear on the stage for the first time.Automobile advances and appears on the stage, and front-wheel is pressed on the lifting jack 6 between the major and minor cylinder, and trailing wheel is pressed on the lifting table.Press earlier the lifting key of lifting table, allow lifting table rise to reference mark (height overhead, down together) 250 places.Press the decline key of lifting jack then, lifting jack 6 can be reduced to lowest order, and front-wheel is in following the process of decline, and axle retransmits a sensor and samples and give computer with signal, and cylinder 2 pines embrace, mix bar 20 and fell simultaneously.When front-wheel is pressed between the major-minor cylinder 2, also be pressed on the 3rd cylinder 3, the 3rd cylinder 3 has the reference mark of indication tire minimum point.So far, front-wheel puts in place.
Press the rising or the decline key of lifting table, make the absolute altitude of trailing wheel identical with front-wheel, so far, trailing wheel puts in place and the car load horizontal, clogs the back of two trailing wheels with cleat.
The front wheel brake test is wanted earlier the brake pedal switch to be hung on the automobile brake pedal, then, press initiate key by motor 4 low speed starting under no loads, after the running steadily, with slowly combination of clutch coupling 5, drive cylinder 2 and wheel start gradually and quicken, after the running steadily, clutch coupling 5 is separated, by the high speed key, motor 4 becomes high speed no-load running simultaneously again, after the running steadily, again with slowly combination of clutch coupling, drive cylinder 2 and wheel and quicken again, until running steadily and speedometer show a little more than 30KM/h.At this moment, press the OFF key of motor, cylinder 2 and wheel are run out of steam, slowly slow down under inertia effect, when being decelerated to 30KM/h, operating personnel separate clutch coupling 5 rapidly and step on brake pedal immediately.Before this, if be provided with a braking, then brake pedal is stepped on and is decontroled immediately; If be provided with brake hard, then brake pedal will slam and not put, and shows till 0 until speedometer.At this moment, computer screen shows immediately: front axle weight, initial speed of braking, braking system coordinated time, continue braking time, braking release time, braking beginning and ending time, left and right wheels braking distance, left and right wheels rolling distance, left and right wheels skidding distance, left and right wheels braking average retardation rate, left and right wheels braking deceleration curve map, final speed of braking test findings such as (some brakings).
During coasting test, motor 4 startings and running, identical with brake test, difference is to hang the brake pedal switch, and when the speed of a motor vehicle allows cylinder 2 and wheel run out of steam to be decelerated to 30KM/h a little more than 30KM/h again, computer can begin to calculate automatically coasting distance, the coasting time of left and right wheels, is 0 to be off-test until the speed of a motor vehicle.
Can be after front wheel brake, coasting test be finished, detect in passing the trailing wheel location (if as long as detect front alignment just needn't).At first, the situation of front-wheel on cylinder 2 is constant, take away cleat, under two lifting jack are placed on automobile hind axle or crossbeam it is temporarily withstood, by the decline key by lifting table decline 100MM about, make trailing wheel unsettled, with about the detection dish place under the trailing wheel on the only track 11, unclamp the lock-bit 27 of detection dish again, allow detection dish and the finger plate 31 can flexible movement and rotation, slowly rise by lifting table and detection dish by lifting key then, and adjust the position of detection dish and finger plate 31 at any time, allow the finger plate center of circle aim at wheel and land central straight to withstanding wheel.After this, can remove lifting jack, look at whether horizontal of car load, condition is: front-wheel absolute altitude=trailing wheel absolute altitude+73 (rotary system height overall), not horizontal then button adjust the lifting table height.
According to the position scale of the Y-axis on the Lifting platform, be easy to draw antero posterior axis and the planimetric position of trailing wheel on platform apart from scale and detection dish place track 11 following sideslip cars.
The device 47 that ends into of dip meter is mentioned, allow and survey incline axle bed 42 and slide rule 45 bullets to the trailing wheel lateral surface, adjust last 47, make it to be pressed in respectively upper and lower two places of wheel rim by the height of rule 46 down, by the scale on the slide rule 45 as can be known trailing wheel radius=down by advising height of living in+up and down by half of distance between advising.
With above-mentioned each data input computer, click rear-axle steering again and detect key, screen shows trailing wheel radius, real wheel toe angle, trailing wheel toe-in value, trailing wheel camber angle, thrust angle, Y-axis distance and testing results such as wheelbase is poor, rear tread immediately.
So far, the action of appearing on the stage is for the first time all finished, incline axle bed 42 and slide rule 45 of survey return and stopped, under two lifting jack are placed on rear axle or crossbeam once more it is temporarily withstood, press the decline key of lifting table, make the wheel that is pressed on the finger plate 31 unsettled, finger plate 31 is moved on to reference position and pinning, move the detection dish then.Then make two lifting jack unsettled by lifting key, remove lifting jack after, reduce to lowest order by the decline key by lifting table, the lifting key of pressing lifting jack 6 again comes front-wheel jack-up, whole stand reverts to state at ordinary times, reversing automobile is left office.
Because two lifting jack are difficult for synchronously, so only be used for temporary transient support, elevating movement is all finished by lifting table.
3, appear on the stage for the second time.Behind the somerset, reversing is appeared on the stage.Appear on the stage, processes such as brake test, coasting test all with appear on the stage for the first time identical, difference be with cleat clog two front-wheel back, motor 4 changed rotation direction, a left side with right replace mutually and test findings except that rear axle is every, also increased automobile general assembly (TW), four-wheel brake hard deceleration curve figure etc.The test findings of front and rear wheel will merge the complete test findings table of composition and show.
The automotive speedometer check can be turned round with motor car engine head roll 2, and (n * 10KM/h), throw off engine power and hang neutral gear carries out the slow decelerate of inertia when slightly surpassing the speed of a motor vehicle that sets.When automotive speedometer arrives the setting speed of a motor vehicle, click the brake pedal switch that serves as sampling switch, to the stand speed of a motor vehicle once sampling of this moment, later every deceleration 10KM/h once sampling.The automotive speedometer of n sampling of screen display and the table of comparisons of the stand standard speed of a motor vehicle.
The preliminary work that detection turns to is included in processes such as the beneath storing of front-wheel detection dish, all appears on the stage identical with the first time.When car load horizontal and preceding wheel load standard finger plate 31, measured after the front-wheel radius, with the front-wheel radius, data such as the position input computer of detection dish place track 11 and sideslip car, seek returning on schedule of front-wheel steer by the computer prompting, operating personnel beat after bearing circle finds back on schedule according to prompting, beat left again bearing circle until beat motionless till, change then that to beat bearing circle to the right motionless until beating into, return bearing circle at last left, when getting back to back on schedule, the computer prompting detects and finishes, show the front-wheel radius on the screen, the toe-in of front wheel angle, the toe-in of front wheel value, front-wheel camber, kingpin castor angle, kingpin inclination, wrapping angle, the front-wheel steer gap, front tread, the front-wheel steering locking angle, minimum turning diameter, interior wheel turning diameter is poor, steering angle (turning to toe-out), the axle offset of antero posterior axis wheel, the axle off normal, testing results such as horizontal off normal, and merge the rear-axle steering testing result of appearing on the stage for the first time, forming complete testing result table shows, show that simultaneously the testing result table is printed in computer control automatically.
After the detection, the back skating chi, put lifting jack, lifting table and descend, move process such as detection dish all with for the first time identical, whole stand reverts to after the peacetime state, the automobile leave from office of advancing.
Except that detecting, testing table also has proofreaies and correct, adjusts working method.Wherein, the correction work mode is the output valve that shows two LOAD CELLS, four angular transducers, to cooperate the demarcation utensil sensor is carried out gauging calibration.Adjust working method then at the sideslip of vehicle front, earlier data such as tire radius, section width are inputed to computer, the toe-in angle, camber angle, the sideslip that are shown left and right sides front-wheel by computer are measured, and amount meets the requirements so that scene adjustment allows sideslip, and a sideslip amount here conduct is adjusted reference.
The standard database that computer is set up has write down the relevant normal data of braking, turning to of some common vehicle types, will be accessed automatically to compare and reference when showing testing result.If new standard that automobile production producer provides or the empirical data of oneself groping are out arranged, can import by keyboard, to increase or to revise the content of database.
Turn to projects title of detection that the definition of standard is all arranged, respectively turn to the computing formula and the mathematical model of testing result, detailed introduction is all arranged in many interrelated datas.
Claims (2)
1, a kind of car chassis testing platform, comprise inertia type brake tester, the heavy check-out console of axle, speedometer check-out console, steering angle detector, four-wheel position finder, lifting stand etc., it is characterized in that: described car chassis testing platform integral body places above the ground, an end that connects bridge is connected on the back bridge chair (7) of brake platform, one end is connected on the middle bridge chair (17) of lifting table, one end of access bridge is connected on the preceding bridge chair (19) of lifting table, one end places ground, the detection dish is placed on the lifting table, wherein:
Brake platform: pedestal (1) fixes on the ground, on pedestal (1), be provided with four cylinders (2), two master rotors (2) through clutch coupling (5), belt pulley (4) by motor-driven, on the lifting jack (6) before and after the 3rd cylinder (3) places between the cylinder (2), lifting jack (6) is provided with LOAD CELLS, locate respectively to be provided with railing (20) at two auxiliary cylinders (2), be provided with tension board between railing (20) and lifting jack (6), optical disc (8) is equipped with in two auxiliary cylinders (2) and the 3rd cylinder (3) the inner;
Lifting table: lifting table places hydraulic cylinder (12) top, and hydraulic cylinder (12) is provided with hydraulic efficiency synchronous mechanism, and the lifting table table top is provided with grooved tracks (11), and grooved tracks has the wheelbase scale between (11);
Connect bridge: transfer at the long beam (14) that connects bridge and be provided with load stake (16);
Access bridge: the short beam of access bridge (18) earth terminal fixes on the ground with foot bolt
2, car chassis testing platform according to claim 1 is characterized in that: be provided with revetment (15) and revetment (10) at connection bridge and lifting table both sides.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100389779A CN1314951C (en) | 2004-05-10 | 2004-05-10 | Chassis test bench for cars |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100389779A CN1314951C (en) | 2004-05-10 | 2004-05-10 | Chassis test bench for cars |
Publications (2)
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| CN1570589A true CN1570589A (en) | 2005-01-26 |
| CN1314951C CN1314951C (en) | 2007-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100389779A Expired - Fee Related CN1314951C (en) | 2004-05-10 | 2004-05-10 | Chassis test bench for cars |
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