CN109470488B - Multi-condition road surface simulation device and road condition simulation method - Google Patents
Multi-condition road surface simulation device and road condition simulation method Download PDFInfo
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- CN109470488B CN109470488B CN201811152026.2A CN201811152026A CN109470488B CN 109470488 B CN109470488 B CN 109470488B CN 201811152026 A CN201811152026 A CN 201811152026A CN 109470488 B CN109470488 B CN 109470488B
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses a multi-working-condition road surface simulation device which comprises a lifting device, wherein the lifting device is connected with a lifting workbench, a left-right inclination adjusting mechanism and a front-back inclination adjusting mechanism are arranged on the lifting workbench, and a concave-convex working condition adjusting mechanism is also arranged on the front-back inclination adjusting mechanism. The invention also discloses a road condition simulation method, which uses the simulation device of the multi-working-condition road surface, and concretely comprises the steps of installing and fixing a base through foundation bolts; rotating the lifting rotating handle to adjust the height of the lifting workbench; determining road condition parameters; rotating the left and right rotating handles, and rotating the left and right rotating tables to complete the simulation of the longitudinal inclined pavement; rotating the front and rear rotating handles to finish the lateral inclined pavement; and rotating the rotating handle and rotating the adjusting handle to complete the adjustment of the concave-convex degree of the road surface. The road condition simulation method improves the accuracy of measuring the motion and stress conditions of the automobile on various road surface working conditions.
Description
Technical Field
The invention belongs to the technical field of automobile tests, and relates to a multi-working-condition road surface simulation device and a road condition simulation method.
Background
The automobile chassis dynamometer is an indoor bench test device for testing the performances of automobile dynamic property, multi-working condition emission indexes, fuel indexes and the like, and mainly comprises a road simulation system, a signal acquisition and control system, a safety guarantee system, a guide system and the like. The chassis dynamometer uses a rotary drum simulation to replace a road surface, the rotation of the rotary drum is equivalent to the continuously moving road surface, and wheels of a tested automobile roll on the rotary drum. The automobile chassis dynamometer is divided into a single rotary drum and a double rotary drum, the single rotary drum chassis dynamometer supports one rotary drum of each side driving wheel, the diameter of the rotary drum is large (generally between 1500-2500 mm), the number of supporting bearings is small, and the mechanical loss of a rack is small. The larger the diameter of the drum is, the more the wheel rolls on the drum like a flat road, the lower the slip ratio and the rolling resistance between the tire and the drum are, and therefore the testing precision is high, but the manufacturing and installation costs are high, and the method is generally used in manufacturing factories and scientific research units. The double-drum chassis dynamometer supports two rotary drums for driving wheels on each side, the diameter of each rotary drum is small (generally between 180 mm and 500 mm), compared with a single-drum chassis dynamometer, the double-drum chassis dynamometer has the advantages that four supporting bearings and one coupler are added, and mechanical loss is large in the detection process. The smaller the diameter of the rotary drum is, the larger the difference between the contact between the wheel and the rotary drum and the flat road is, the higher the slip ratio between the tire and the rotary drum is, the higher the rolling resistance is, and the test precision is poorer; the device has the advantages of low equipment cost and convenient use, and is generally used in the automobile use and maintenance industry and automobile detection lines or detection stations. The two road simulation devices have respective advantages and disadvantages mainly because of different numbers and diameters of the rotary drums, and in addition, the shafts of the rotary drums and the shafts of the wheels of the two chassis dynamometers are in parallel relation when in work, so that the road simulation device can only simulate the working condition of the wheels on a straight road, and cannot simulate the movement condition of the wheels on a road with lateral and longitudinal inclination when an automobile runs on a turn and an up-down slope.
Disclosure of Invention
The invention aims to provide a multi-working-condition road surface simulation device which can accurately simulate the movement and stress conditions of an automobile on various road surface working conditions.
The invention also aims to provide a working condition simulation method.
The invention adopts a first technical scheme that the multi-working-condition pavement simulation device comprises a lifting device, wherein the lifting device is connected with a lifting workbench, a left-right rotating workbench and a front-back rotating workbench which are parallel to each other are sequentially arranged above the lifting workbench from top to bottom, the left-right rotating workbench is provided with a left-right inclination adjusting mechanism, the left-right rotating workbench is connected with a left-right inclination retainer through a pin shaft, the left-right inclination retainer is fixedly connected with the lifting workbench, the front-back rotating workbench is provided with a front-back inclination adjusting mechanism, the front-back rotating workbench is connected with a front-back inclination retainer through a pin shaft, the front-back inclination retainer is fixedly connected with the left-right rotating workbench, and the front-back rotating workbench is also provided with.
The first technical solution of the present invention is also characterized in that,
the lifting device comprises a base, a lifting screw vertical to the base is arranged on the base, the lifting screw is in threaded pair connection with the lifting workbench, a driven bevel gear is fixedly sleeved on the lifting screw, the driven bevel gear is meshed with a driving bevel gear, one end of the driving bevel gear is fixedly connected with one end of a driving shaft, and a lifting rotating handle is arranged at the other end of the driving shaft.
The driving shaft is fixed on the base through a bearing seat, upright columns are symmetrically arranged on two sides of the lifting screw rod, and the upright columns are fixed on the base.
The left and right tilting mechanism comprises a left rotating shaft and a right rotating shaft which are fixedly connected with a left rotating table and a right rotating table, the left and right rotating shafts are arranged in parallel with the width direction of the left and right rotating tables, the left and right rotating shafts are connected with a lifting table through a supporting seat to form a rotating pair, worm wheels are coaxially and fixedly connected with the left and right rotating shafts, worm gears are meshed with worms, and left and right rotating handles are arranged at one ends of the worms.
A worm supporting plate is fixed on the lifting workbench, the worm penetrates through the lifting workbench along the thickness direction of the worm supporting plate, and a rolling bearing is arranged between the worm and the worm supporting plate.
The front and back inclination adjusting mechanism comprises a front and back rotating shaft connected with a front and back rotating table, the front and back rotating shaft is arranged in parallel with the length direction of the front and back rotating table, the front and back rotating shaft is respectively connected with a left rotating table, a right rotating table and the front and back rotating table to form a rotary pair, the front and back rotating table is provided with an incomplete gear, the incomplete gear is partially meshed with a pinion shaft, the pinion shaft is connected with a pinion shaft supporting plate which is in rotary pair connection, one end of the pinion shaft, far away from the gear, is provided with a front and back rotating handle, the front and back rotating handle is movably provided with a positioning pin, the positioning pin synchronously rotates along with the front and back rotating handle, one side of the pinion shaft supporting plate, close to the front and back rotating handle, is fixedly provided with a positioning disc, positioning holes positioned on, the positioning pin can extend into the positioning hole.
The concave-convex working condition adjusting mechanism comprises a middle rotary drum and a left rotary drum and a right rotary drum which are symmetrically arranged at two sides of the middle rotary drum, steel wire toothed belts are wound on the middle rotary drum, the left rotary drum and the right rotary drum, an up-and-down adjusting support is fixed on a front rotary worktable and a back rotary worktable, the up-and-down adjusting support is provided with a groove, one end of a hollow shaft of the middle rotary drum and the groove of the up-and-down adjusting support form a rotary pair connection, the other end of the hollow shaft of the middle rotary drum is, the other end of the hollow shaft of the intermediate rotary drum is connected with an intermediate rotary drum adjusting nut as a rotary pair, the intermediate rotary drum adjusting nut is sleeved on the intermediate rotary drum screw rod, and the middle rotary drum adjusting nut is connected with the middle rotary drum screw rod through a thread pair, the middle rotary drum screw rod is connected with the front and rear rotary working tables through a bearing seat, the top end of the middle rotary drum screw rod is fixedly connected with an adjusting handle, and the axis direction of the middle rotary drum screw rod is parallel to the height direction of the up-down adjusting support.
A left and a right rotary drum adjusting screw rod and a feed rod are fixed on the front and back rotary working tables through a bearing seat, the left and the right rotary drum adjusting screw rods and the feed rod are arranged in parallel, one end of the left and the right rotary drum adjusting screw rods is provided with a rotary handle, the axial direction of the left and the right rotary drum adjusting screw rods is vertical to the height direction of the bearing seat for fixing the left and the right rotary drum adjusting screw rods, one end of a hollow shaft of the left rotary drum is connected with a left rotary drum adjusting nut, one end of the hollow shaft of the left rotary drum is connected with a rotary pair of the left rotary drum adjusting screw rod, the left rotary drum adjusting nut is connected with the feed rod to form a movable pair, a left key groove is arranged at the position of the front and back rotary working tables corresponding to the other end of the hollow shaft of the left rotary drum, the other end of the hollow shaft of the left rotary drum can move and rotate in the left key, the right rotary drum adjusting nut and the left and right rotary drum adjusting screw form a threaded pair connection, the right rotary drum adjusting nut and the feed rod form a moving pair connection, a right key groove is formed in the position, corresponding to the other end of the hollow shaft of the right rotary drum, of the front and back rotary worktable, and the other end of the hollow shaft of the right rotary drum can move and rotate in the right key groove.
The second technical scheme adopted by the invention is a road condition simulation method, which realizes the simulation of road conditions by using the simulation device of the multi-working-condition road surface of the first technical scheme of the invention and is implemented according to the following steps:
and 6, rotating the adjusting handle, moving the middle rotary drum upwards or downwards, rotating the rotary handle, adjusting the tension of the steel wire toothed belt, and finishing the adjustment of the road surface roughness when the surface roughness of the steel wire toothed belt is the same as the road surface roughness in the step 3.
The invention has the beneficial effects that:
the simulation device for the multi-working-condition road surface is compact in structure and wide in application condition; the road surface simulation device can simulate the working condition of a turning road surface, the working condition of a ramp road surface, the working condition of a speed bump and other uneven road surfaces, and can also simulate different adhesion coefficients of an actual road surface; the road condition simulation method provided by the invention uses the multi-working-condition road surface simulation device to improve the accuracy of the measurement of the motion and stress conditions of the automobile on various road surface working conditions.
Drawings
FIG. 1 is a schematic structural diagram of a multi-condition road surface simulation device according to the present invention;
FIG. 2 is a left side view of a multi-condition road surface simulation device of the present invention.
In the figure, 1, a lifting workbench, 2, a base, 3, a lifting screw rod, 4, a driven bevel gear, 5, a driving bevel gear, 6, a driving shaft, 7, a lifting rotating handle, 8, a column, 9, a left rotating workbench, a right rotating workbench, 10, a left rotating shaft, a right rotating shaft, 11, a worm gear, 12, a worm, 13, a left rotating handle, a right rotating handle, 14, a left inclined retainer, 15, a worm support plate, 16, a front rotating workbench, 17, a front inclined retainer, 18, a front rotating shaft, a back rotating shaft, 19, a pinion shaft, 20, a pinion shaft support plate, 21, a front rotating handle, a back rotating handle, 22, a positioning pin, 23, a positioning disc, 24, a positioning hole, 25, a middle drum, 26, a left drum, 27, a right drum, 28, a steel wire drum toothed belt, 29, an up-down adjusting support, 30, a middle drum adjusting nut, 31, 34. a polished rod 35, a left-turning drum adjusting nut 36, a right-turning drum adjusting nut 37 and a rotating handle.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention relates to a multi-working-condition road surface simulation device, which comprises a lifting device, wherein the lifting device is connected with a lifting workbench 1, a left-right rotating workbench 9 and a front-back rotating workbench 16 which are parallel to each other are sequentially arranged above the lifting workbench 1 from top to bottom, the left-right rotating workbench 9 is provided with a left-right inclination adjusting mechanism, the left-right rotating workbench 9 is connected with a left-right inclination retainer 14 through a pin shaft, the left-right inclination retainer 14 is fixedly connected with the lifting workbench 1, the front-back rotating workbench 16 is provided with a front-back inclination adjusting mechanism, the front-back rotating workbench 16 is connected with a front-back inclination retainer 17 through a pin shaft, the front-back inclination retainer 17 is fixedly connected with the left-right rotating workbench 16, and the front-back rotating workbench 16 is also provided with a.
The lifting device comprises a base 2, a lifting screw 3 vertical to the base 2 is arranged on the base through a bearing seat, the lifting screw 3 is in threaded pair connection with a lifting workbench 1, upright columns 8 are symmetrically arranged on two sides of the lifting screw 3, the upright columns 8 are fixed on the base 2, driven bevel gears 4 are fixedly sleeved on the lifting screw 3, the driven bevel gears 4 are meshed with driving bevel gears 5, one ends of driving shafts 6 are fixedly connected with the driving bevel gears 5, lifting rotating handles 7 are arranged at the other ends of the driving shafts 6, and the driving shafts 6 are fixed on the base 2 through the bearing seats.
The left and right tilting mechanism comprises a left rotating shaft 10 fixedly connected with a left and right rotating workbench 9, the left and right rotating shaft 10 is arranged in parallel with the width direction of the left and right rotating workbench 9, the left and right rotating shaft 10 forms a revolute pair connection with the lifting workbench 1 through a supporting seat, a worm wheel 11 is coaxially and fixedly connected with the left and right rotating shaft 10, the worm wheel 11 is meshed with a worm 12, one end of the worm 12 is provided with a left and right rotating handle 13, a worm supporting plate 15 is fixed on the lifting workbench 1, the worm 12 penetrates through the thickness direction of the worm supporting plate 15, and a rolling bearing is arranged between the worm 12 and the worm supporting.
The front-back inclination adjusting mechanism comprises a front-back rotating shaft 18 connected with a front-back rotating workbench 16, the front-back rotating shaft 18 and the front-back rotating workbench 16 are arranged in parallel in the length direction, the front-back rotating shaft 18 is respectively connected with a left-right rotating workbench 9 and the front-back rotating workbench 16 in a rotating pair mode, the front-back rotating workbench 16 is provided with an incomplete gear, the incomplete gear is partially meshed with a pinion shaft 19, the pinion shaft 19 is connected with a pinion shaft supporting plate 20, the pinion shaft 19 and the pinion shaft supporting plate 20 are in rotating pair connection, one end, far away from the gear, of the pinion shaft 19 is provided with a front-back rotating handle 21, a positioning pin 22 is movably arranged on the front-back rotating handle 21, the positioning pin 22 rotates synchronously along with the front-back rotating handle 21, one side, close to the front-back rotating, the circumference of the positioning hole 24 is equal to and opposite to the circumference of the positioning pin 22 rotating along with the front and rear rotating handles 21, and the positioning pin 22 can extend into the positioning hole 24.
The concave-convex working condition adjusting mechanism comprises an intermediate rotary drum 25, a left rotary drum 26 and a right rotary drum 27 which are symmetrically arranged at two sides of the intermediate rotary drum, a steel wire toothed belt 28 is wound on the intermediate rotary drum 25, the left rotary drum 26 and the right rotary drum 27, an up-down adjusting support 29 is fixed on the front-back rotary worktable 16, the up-down adjusting support 29 is provided with a groove, one end of a hollow shaft of the intermediate rotary drum 25 is connected with the groove of the up-down adjusting support 29 to form a rotary pair, the other end of the hollow shaft of the intermediate rotary drum 25 is connected with an intermediate rotary drum adjusting nut 30, the other end of the hollow shaft of the intermediate rotary drum 25 is connected with the intermediate rotary drum adjusting nut 30 to form a rotary pair, the intermediate rotary drum adjusting nut 30 is sleeved on an intermediate rotary drum screw rod 31, the intermediate rotary drum adjusting nut 30 is connected with the intermediate rotary drum screw rod 31 to form a thread pair, the, the axial direction of the intermediate drum screw 31 is parallel to the height direction of the vertical adjustment support 29.
A left and right drum adjusting screw 33 and a feed bar 34 are fixed on the front and rear rotary tables 16 through a bearing seat, the left and right drum adjusting screw 33 and the feed bar 34 are arranged in parallel, one end of the left and right drum adjusting screw 33 is provided with a rotary handle 37, the axial direction of the left and right drum adjusting screw 33 is vertical to the height direction of the bearing seat for fixing the left and right drum adjusting screw 33, one end of a hollow shaft of the left rotary drum 26 is connected with a left rotary drum adjusting nut 35, one end of the hollow shaft of the left rotary drum 26 is connected with the left rotary drum adjusting nut 35 as a rotary pair, the left rotary drum adjusting nut 35 is connected with the left and right drum adjusting screw 33 through a thread pair, the left rotary drum adjusting nut 35 is connected with the feed bar 34 through a moving pair, a left key groove is arranged at a position corresponding to the other end of the hollow shaft of the left rotary table 16 and the left rotary drum 26, the other end of the hollow shaft of the, and one end of the hollow shaft of the right-turning drum 27 is connected with a right-turning drum adjusting nut 36 through a rotary pair, the right-turning drum adjusting nut 36 is connected with a left-right rotary drum adjusting screw 33 through a thread pair, the right-turning drum adjusting nut 36 is connected with a polishing rod 34 through a moving pair, a right key groove is formed in the position, corresponding to the other end of the hollow shaft of the right-turning drum 27, of the front-back rotary worktable 16, and the other end of the hollow shaft of the right-turning drum 27 can move and rotate in the right key groove.
The working process of the multi-working-condition road surface simulation device is as follows:
by rotating the lifting rotating handle 7, the driving bevel gear 5 drives the driven bevel gear 4 to rotate, and further drives the lifting screw 3 to rotate, so that the lifting workbench 1 is lifted or lowered, the height adjustment of the lifting workbench 1 is completed, the contact between the bottom surface of the tested automobile tire and the steel wire toothed belt 28 is ensured, and a certain pressure is ensured to exist between the bottom surface of the tested automobile tire and the steel wire toothed belt. In the lifting process of the lifting workbench 1, the upright posts 3 on two sides of the lifting screw rod 3 are used for ensuring the lifting or descending stability of the lifting workbench 1.
Rotation process of the left-right rotation table 9: the left and right rotating handles 13 are rotated to enable the worm 12 to drive the worm wheel 11 to rotate, the left and right rotating shafts 10 rotate synchronously with the worm wheel 11, the left and right rotating tables 9 rotate along with the left and right rotating shafts 10, the left and right inclined retainers 14 are used for guaranteeing the rotating stability of the left and right rotating tables 9, and when the left and right rotating tables 9 rotate to a required angle, the reverse rotation self-locking performance of the worm wheel 11 and the worm 12 guarantees the position of the left and right rotating tables 9 to be fixed, and the left and right rotating tables 9 rotate to a certain angle.
Rotation process of the front and rear rotary tables 16: when the front and rear rotary handles 21 are rotated, the pinion shafts 19 synchronously rotate and drive the front and rear rotary tables 16 to rotate for a certain angle around the front and rear rotary shafts 18, the front and rear inclined retainers 17 are used for ensuring the rotating stability of the front and rear rotary tables 16, and when the front and rear rotary tables 16 rotate to a required angle, the positioning pins 22 are inserted into the corresponding positioning holes 24 on the positioning disc 23, so that the front and rear rotary tables 16 rotate for a certain angle.
Distance adjustment process of the left and right rotary drums 26 and 27: the joint of the left and right drum adjusting screw 33 and the left drum adjusting nut 35 is left-handed thread, and the joint of the left and right drum adjusting screw and the right drum adjusting nut 36 is right-handed thread. The rotating handle 37 is rotated, the left and right drum adjusting screw 33 drives the left drum adjusting nut 35 and the right drum adjusting nut 36 to simultaneously approach or separate from each other, so that the adjustment of the center distance between the left drum 26 and the right drum 27 is realized, wheels with different diameters are fully contacted with the middle drum 25, the left drum 26 and the right drum 27, and the smaller slip ratio is ensured.
Up-down position adjustment of the intermediate drum 25: the optical rod 34 forms a moving pair with the left-turning drum adjusting nut 35 and the right-turning drum adjusting nut 36 respectively, so as to ensure the smoothness of the adjustment of the center distance between the left-turning drum 26 and the right-turning drum 27. The middle rotary drum screw 31 rotates along with the adjusting handle 32, the middle rotary drum adjusting nut 30 drives the middle rotary drum 25 to move up and down, and the up-and-down adjusting support 29 is used for ensuring the up-and-down moving stability of the middle rotary drum 25.
The invention relates to a road condition simulation method, which realizes road condition simulation by using a multi-working-condition road surface simulation device, and is implemented according to the following steps:
and 6, rotating the adjusting handle 32, moving the middle rotary drum 25 upwards or downwards, rotating the rotary handle 37, adjusting the tension of the steel wire toothed belt 28, and finishing the adjustment of the road surface roughness when the surface roughness of the steel wire toothed belt 28 is the same as the road surface roughness in the step 3.
Through the mode, the simulation device for the multi-working-condition road surface is compact in structure and wide in application condition; the left and right rotary working tables 9 are rotated by different angles to simulate the working condition of the turning road surface; the working condition of the ramp road surface is simulated by rotating the front rotary worktable 16 and the rear rotary worktable by different angles; the distance between the left rotary drum 26 and the right rotary drum 27 and the up-down position of the middle rotary drum 25 are adjusted, so that the purposes of changing the slip ratio and the rolling resistance can be realized, and the working conditions of uneven road surfaces such as deceleration strips and the like can be simulated; the outer surface of the steel wire toothed belt 28 can be replaced by different materials for simulating different adhesion coefficients of an actual road surface; (ii) a The road condition simulation method provided by the invention uses the multi-working-condition road surface simulation device to improve the accuracy of the measurement of the motion and stress conditions of the automobile on various road surface working conditions.
Claims (6)
1. A multi-working condition road surface simulation device is characterized by comprising a lifting device, wherein the lifting device is connected with a lifting workbench (1), a front-back rotating workbench (16) and a left-right rotating workbench (9) which are parallel to each other are sequentially arranged above the lifting workbench (1) from top to bottom, the left and right rotary working tables (9) are provided with left and right inclination adjusting mechanisms, the left and right rotary working tables (9) are connected with left and right inclination retainers (14) through pin shafts, the left and right inclined retainers (14) are fixedly connected with the lifting workbench (1), the front and back rotating workbench (16) is provided with a front and back inclination adjusting mechanism, the front and back rotary working table (16) is connected with a front and back inclined retainer (17) through a pin shaft, the front and back inclined retainer (17) is fixedly connected with the front and back rotary worktable (16), and the front and back rotary worktable (16) is also provided with a concave-convex working condition adjusting mechanism;
the left-right inclination adjusting mechanism comprises a left-right rotating shaft (10) fixedly connected with the left-right rotating workbench (9), the left-right rotating shaft (10) and the left-right rotating workbench (9) are arranged in parallel in the width direction, the left-right rotating shaft (10) and the lifting workbench (1) form a revolute pair connection through a supporting seat, the left-right rotating shaft (10) is coaxially and fixedly connected with a worm wheel (11), the worm wheel (11) is meshed with a worm (12), and one end of the worm (12) is provided with a left-right rotating handle (13);
the front and back inclination adjusting mechanism comprises a front and back rotating shaft (18) connected with the front and back rotating tables (16), the front and back rotating shaft (18) and the front and back rotating tables (16) are arranged in parallel in the length direction, the front and back rotating shaft (18) is respectively connected with the left and right rotating tables (9) and the front and back rotating tables (16) in a revolving pair manner, the front and back rotating tables (16) are provided with incomplete gears, the incomplete gears are partially meshed with a pinion shaft (19), the pinion shaft (19) is connected with a pinion shaft supporting plate (20), the pinion shaft (19) is connected with the pinion shaft supporting plate (20) in a revolving pair manner, one end of the pinion shaft (19) far away from the gears is provided with a front and back rotating handle (21), a positioning pin (22) is movably arranged on the front and back rotating handle (21), and the positioning pin (22) synchronously rotates along with the front, gear shaft backup pad (20) are close to around twist grip (21) one side and are fixed with positioning disk (23), evenly be provided with locating hole (24) that are located same circumference on positioning disk (23), the circumference that locating hole (24) are located and locating pin (22) rotate the circumference that is located and the size equals and set up relatively along with around twist grip (21), locating pin (22) can stretch into in locating hole (24).
2. The device for simulating the multi-condition road surface according to claim 1, wherein the lifting device comprises a base (2), a lifting screw (3) perpendicular to the base is arranged on the base (2), the lifting screw (3) is in threaded pair connection with the lifting workbench (1), a driven bevel gear (4) is fixedly sleeved on the lifting screw (3), the driven bevel gear (4) is engaged with a driving bevel gear (5), one end of a driving shaft (6) is fixedly connected with the driving bevel gear (5), and a lifting rotating handle (7) is arranged at the other end of the driving shaft (6).
3. The simulation device for the multi-working-condition road surface according to claim 2, wherein the driving shaft (6) is fixed on the base (2) through a bearing seat, the lifting screw (3) is symmetrically provided with upright columns (8) at two sides, and the upright columns (8) are fixed on the base (2).
4. The multi-condition road surface simulation device as claimed in claim 2, wherein a worm support plate (15) is fixed on the lifting workbench (1), the worm (12) penetrates through the worm support plate (15) in the thickness direction, and a rolling bearing is arranged between the worm (12) and the worm support plate (15).
5. The simulation device of a multi-condition road surface according to claim 4, wherein the concave-convex condition adjusting mechanism comprises an intermediate rotating drum (25), and a left rotating drum (26) and a right rotating drum (27) which are symmetrically arranged at two sides of the intermediate rotating drum, steel wire toothed belts (28) are wound on the intermediate rotating drum (25), the left rotating drum (26) and the right rotating drum (27), an up-and-down adjusting support (29) is fixed on the front-and-back rotating table (16), the up-and-down adjusting support (29) is provided with a groove, one end of a hollow shaft of the intermediate rotating drum (25) and the groove of the up-and-down adjusting support (29) form a revolute pair connection, the other end of the hollow shaft of the intermediate rotating drum (25) is connected with an intermediate rotating drum adjusting nut (30) through a hollow shaft, and the other end of the hollow shaft of the intermediate rotating drum (25) and, the middle drum adjusting nut (30) is sleeved on a middle drum lead screw (31), the middle drum adjusting nut (30) is connected with the middle drum lead screw (31) through a thread pair, the middle drum lead screw (31) is connected with a front rotary table and a rear rotary table (16) through a bearing seat, the top end of the middle drum lead screw (31) is fixedly connected with an adjusting handle (32), and the axial direction of the middle drum lead screw (31) is parallel to the height direction of the vertical adjusting support (29);
a left and a right drum adjusting lead screw (33) and a feed bar (34) are fixed on the front and rear rotating working table (16) through a bearing seat, the left and the right drum adjusting lead screws (33) and the feed bar (34) are arranged in parallel, one end of each of the left and the right drum adjusting lead screws (33) is provided with a rotating handle (37), the axial direction of each of the left and the right drum adjusting lead screws (33) is vertical to the height direction of the bearing seat for fixing the left and the right drum adjusting lead screws (33), one end of a hollow shaft of the left drum (26) is connected with a left drum adjusting nut (35), one end of the hollow shaft of the left drum (26) is connected with the left drum adjusting nut (35) through a rotary pair, the left drum adjusting nut (35) is connected with the left and the right drum adjusting lead screws (33) through a thread pair, the left drum adjusting nut (35) is connected with the feed bar (34) through a moving pair, and a left key groove is arranged at, the other end of a hollow shaft of the left rotary drum (26) can move and rotate in a left key groove, one end of a hollow shaft of the right rotary drum (27) is connected with a right rotary drum adjusting nut (36), the other end of the hollow shaft of the right rotary drum (27) is connected with the right rotary drum adjusting nut (36) through a rotary pair, the right rotary drum adjusting nut (36) is in threaded pair connection with a left rotary drum adjusting screw rod (33) and a right rotary drum adjusting screw rod (33), the right rotary drum adjusting nut (36) is in moving pair connection with a light bar (34), a right key groove is formed in the position, corresponding to the other end of the hollow shaft of the right rotary drum (27), of the front and back rotary worktable (16), and the other end of the hollow shaft of the right rotary drum (.
6. A road condition simulation method is characterized in that the road condition simulation is realized by using the simulation device of the multi-condition road surface as claimed in claim 5, and the method is implemented according to the following steps:
step 1, installing and fixing the base (2) through foundation bolts, and ensuring that a gap of about 5mm is reserved between the upper surface of the steel wire toothed belt (28) and the lowest position of the surface of a tire of a tested automobile;
step 2, rotating the lifting rotating handle (7), adjusting the height of the lifting workbench (1), ensuring that the bottom surface of the tire of the tested automobile is in contact with the steel wire toothed belt (28), and ensuring that pressure exists between the bottom surface and the steel wire toothed belt;
step 3, determining road condition parameters, wherein the road condition parameters comprise longitudinal gradient of a road surface, lateral gradient of the road surface and concave-convex height of the road surface;
step 4, turning the left and right rotary handles (13), turning the left and right rotary tables (9), stopping turning the left and right rotary handles (13) when the inclination of the left and right rotary tables (9) is the same as the longitudinal inclination of the road surface in the step 3, reversely rotating the worm wheel (11) and the worm (12), self-locking and fixing the positions of the left and right rotary tables (9), and finishing the simulation of the longitudinally inclined road surface;
step 5, turning the front-back rotating handle (21), wherein the front-back rotating workbench (16) rotates around a front-back rotating shaft (18), when the inclination of the front-back rotating workbench (16) is the same as the lateral inclination of the road surface in the step 3, the front-back rotating handle (21) stops being turned, the positioning pin (22) is inserted into a corresponding positioning hole (24) in a positioning disc (23), and the lateral inclined road surface is finished;
and 6, rotating the adjusting handle (32), enabling the middle rotary drum (25) to move upwards or downwards, rotating the rotary handle (37), adjusting the tension of the steel wire toothed belt (28), and finishing the adjustment of the road surface roughness when the surface roughness of the steel wire toothed belt (28) is the same as the road surface roughness in the step 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811152026.2A CN109470488B (en) | 2018-09-29 | 2018-09-29 | Multi-condition road surface simulation device and road condition simulation method |
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| CN109855887A (en) * | 2019-04-11 | 2019-06-07 | 苏州测迅智能汽车科技有限公司 | Flat rubber belting formula road simulator for automatic driving vehicle test |
| CN112113772B (en) * | 2019-06-21 | 2022-11-18 | 广州汽车集团股份有限公司 | Chassis dynamic and static space verification test bed |
| CN111044297B (en) * | 2019-12-13 | 2023-08-04 | 青岛市产品质量监督检验研究院 | Device and method for correcting and testing vehicle body deviation under random excitation of greenhouse ground |
| CN111929186B (en) * | 2020-08-06 | 2023-06-06 | 重庆广播电视大学重庆工商职业学院 | Tire wear performance test system |
| CN112504695A (en) * | 2020-12-03 | 2021-03-16 | 中国人民解放军63653部队 | Multi-degree-of-freedom terrain simulation device |
| CN113945390B (en) * | 2021-10-14 | 2023-08-29 | 中国人民解放军陆军装甲兵学院 | Equipment test system |
| CN113984408B (en) * | 2021-10-29 | 2023-10-17 | 江苏汤臣汽车零部件有限公司 | Comprehensive road condition simulation system for automobile transmission test |
| CN115541266B (en) * | 2022-12-01 | 2023-03-21 | 中汽传媒(天津)有限公司 | Automobile wheel wear resistance detector |
| CN115719556B (en) * | 2022-12-16 | 2023-06-02 | 扬州工业职业技术学院 | Multi-working-condition simulation device for automotive suspension |
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