EPS steering testboard

Abstract

The invention provides an EPS steering test bench. The EPS steering column assembly testing platform solves the problems that an existing traditional testing platform usually tests and records input and output torques of a product, a code scanning gun recognizes a bar code of an EPS steering column assembly, the bar code is collected by a PLC and recorded by an upper computer, data tracing is achieved, the lower end of the EPS steering column assembly is connected with a magnetic powder brake to simulate steering resistance, and the stability of the EPS steering column assembly is improved. The detection efficiency is relatively low; and the detection item is relatively single. The auxiliary frames of different models can be conveniently installed through the adjustable clamping platform, the jacking assemblies and the suspension, independent or simultaneous lifting is achieved through the jacking assemblies symmetrically arranged on the two sides of the installation platform, road condition simulation under different conditions can be achieved, the function design of the real asphalt road condition, the working condition characteristics and the load testing process can be simulated, and the testing efficiency is improved. The device is simple and convenient to use, accurate in control, convenient for data collection and more accurate in test effect.

Description

Technical Field

[0001] The invention relates to the technical field of detection equipment, in particular to an EPS steering test bench. Background Art

[0002] The electric power steering system EPS is a power steering system that directly relies on the motor to provide auxiliary torque. Compared with the traditional hydraulic power steering system HPS, the EPS system has many advantages. EPS is mainly composed of torque sensor, vehicle speed sensor, motor, reduction mechanism and electronic control unit ECU. The working stability and handling characteristics of the electric power steering system are related to driving safety and vehicle performance. Therefore, it is necessary to effectively detect the various performances of the steering gear and calibrate the torque sensor. However, the traditional test platform has a simple structure and the detection is not comprehensive enough. For example, the authorization announcement number CN206945306U is a test bench suitable for automotive EPS system hardware. It uses the input and output torque of the product to test and record, and the barcode scanner gun recognizes the barcode of the EPS steering column assembly, which is collected by PLC and recorded by the host computer to achieve data traceability. The magnetic powder brake is connected to the lower end of the EPS steering column assembly to simulate the steering resistance. The detection efficiency is low and the detection items are relatively single. There is room for improvement in the existing technology. Summary of the invention

[0003] In view of the above-mentioned existing situation, the device of the present invention has invented an EPS steering test bench, including a test bench body arranged in a fence and an electric control box for controlling the test bench, the test bench including a base arranged on the ground and a mounting platform fixedly arranged on the base, the mounting platform is provided with a mounting bracket for mounting a subframe, the mounting bracket is provided with a clamping platform for mounting ESP and adjusting the height, the mounting platform is provided with a jacking assembly for abutting under the tire of the subframe and for adjusting various road condition tests under different pressures, the jacking assembly is provided with two and respectively located on both sides of the above-mentioned mounting bracket, the mounting platform is provided with a suspension for connecting and fixing the shock absorber, the suspension is located above the above-mentioned mounting bracket, and the test platform also includes a servo drive mechanism for driving the steering of the subframe.

[0004] Preferably, the mounting bracket includes two mounting brackets fixedly arranged on the mounting platform, the two mounting brackets are arranged opposite to each other, and the upper ends of the mounting brackets are respectively fixedly provided with a first clamping block and a second clamping block for mounting and fixing the lower arm of the sub-frame, the first clamping block is fixedly arranged on the above-mentioned mounting bracket, and the second clamping block is rotatably arranged on the mounting bracket through a mounting seat, and a limiting plate located below the above-mentioned second clamping block is fixedly arranged on the mounting seat, the limiting plate is provided with an arc-shaped limiting groove, and the limiting groove is surrounded by the outer periphery of the rotation center of the above-mentioned second clamping block, and the lower end of the second clamping block is arranged in the limiting groove by a bolt to complete the angle adjustment and locking of the second clamping block.

[0005] Preferably, anti-slip grooves are provided on the inner sides of the first clamping block and the second clamping block.

[0006] Preferably, the base is installed on the ground via a seismic isolation pad.

[0007] Preferably, the clamping platform includes two mounting plates fixedly arranged on the above-mentioned mounting platform, the two mounting plates are arranged opposite to each other, a lifting platform is movably arranged between the two mounting plates, a mounting block for installing the lower boom is fixedly arranged on the lifting platform, a guide plate is fixedly arranged on both sides of the lower end of the lifting platform, the guide plate is movably arranged on the above-mentioned mounting plate through a first guide rail, a lifting mechanism for lifting the lifting platform is fixedly arranged on the mounting platform, the lifting mechanism is located directly below the above-mentioned lifting platform, first locking plates for locking the lifting platform after the height of the lifting platform is adjusted are arranged on both sides of the lifting platform, and the first locking plates are fixedly arranged on the above-mentioned mounting platform.

[0008] Preferably, the first locking plate is provided with a locking groove which penetrates the first locking plate in the horizontal direction and extends in the vertical direction, and second locking plates extending downward are fixed on both sides of the lifting platform, and the second locking plate is provided with a plurality of locking holes which match the above-mentioned locking groove, and the lifting platform is locked by inserting bolts into the locking holes and the locking grooves.

[0009] Preferably, the jacking assembly includes a mounting block fixedly arranged on the base and two relatively arranged fixed plates, the two fixed plates are respectively fixedly arranged on the above-mentioned mounting block and the mounting platform, and a lifting station is formed above the mounting platform and between the two fixed plates, a support plate is movably arranged in the jacking station, and a lift for lifting the support plate is movably arranged under the support plate, the lift is fixedly arranged on the movable plate, the lower end of the movable plate is fixedly arranged on the base via a plurality of weighing sensors, and a motor for driving the above-mentioned lift to realize the up and down movement of the support plate is fixedly arranged on the movable plate.

[0010] Preferably, two lifts are provided and arranged opposite to each other on the movable plate.

[0011] Preferably, a commutator is provided between the two elevators, and the motor drives the elevators to work via the commutator.

[0012] Preferably, a connecting plate for abutting against the lower end of the supporting plate is fixedly provided at the upper end of the elevator.

[0013] Preferably, four weighing sensors are provided and evenly distributed between the movable plate and the base.

[0014] Preferably, both sides of the support plate are movably arranged on two fixed plates through second guide rails.

[0015] Preferably, a casting plate is fixedly provided on the support plate and is used to abut against the bottom of the tire of the sub-frame. The casting plate is cast by cement.

[0016] Preferably, a plurality of limit blocks are fixedly provided on the upper end of the fixed plate, the limit blocks extend in the horizontal direction, and one end of the limit blocks is located above the above-mentioned support plate.

[0017] Preferably, the suspension is movably provided with two cross beams that can move along the length direction of the suspension. The cross beams are movably provided on the suspension via third guide rails. A clamping seat extending downward and used for mounting an upper fork arm is fixedly provided on the cross beams.

[0018] Preferably, guide sleeves mounted on the suspension are fixedly provided at both ends of the crossbeam, and the third guide rail is located between the guide sleeve and the suspension and the third guide rail is located at the lower end of the suspension.

[0019] Preferably, a guide seat is provided at each end of the beam, and the guide seat is fixed on the above-mentioned suspension. Two guide rods extending along the moving direction of the beam are fixed on the guide seat. The guide rods are inserted on the above-mentioned beam, and the two guide rods are not located in the same straight line direction. The two guide rods are respectively located on both sides of one end of the above-mentioned beam.

[0020] Compared with the prior art, the present invention can conveniently install subframes of different types through an adjustable clamping platform, jacking assembly and suspension. The jacking assembly can realize road condition simulation under different conditions, simulate the functional design, working condition characteristics and load test process of real asphalt road conditions. It is simple and convenient to use, precise to control, and convenient to collect data. The jacking assemblies are symmetrically arranged on both sides of the installation platform to realize individual or simultaneous lifting, so as to realize the testing of equipment under various road conditions, and the test effect is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a schematic diagram of the structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the structure on the base.

[0023] Figure 3 A schematic diagram of the structure of the mounting bracket.

[0024] Figure 4 It is a schematic diagram of the structure of the second clamping block.

[0025] Figure 5 It is a structural schematic diagram of the clamping platform.

[0026] Figure 6 It is a structural schematic diagram of the jacking component.

[0027] Figure 7 It is a structural schematic diagram of the movable plate.

[0028] Figure 8 It is a schematic diagram of the structure at the fixed plate.

[0029] Fig. 9 A schematic diagram of the suspension structure.

[0030] Fig.10 This is a schematic diagram of the structure of the beam.

[0031] Markings in the figure: 1. Fence; 2. Electric control box; 3. Base; 4. Mounting platform; 5. Mounting bracket; 6. Clamping platform; 7. Lifting assembly; 8. Suspension; 9. Servo drive mechanism; 10. Mounting frame; 11. First clamping block; 12. Second clamping block; 13. Mounting seat; 14. Limiting plate; 15. Limiting groove; 16. Anti-skid groove; 17. Isolation pad; 18. Mounting plate; 19. Lifting platform; 20. Mounting beam; 21. Guide plate; 22. First guide rail; 23. Top Lifting mechanism; 24, first locking plate; 25, locking groove; 26, second locking plate; 27, locking hole; 28, mounting block; 29, fixing plate; 30, supporting plate; 31, elevator; 32, weighing sensor; 33, motor; 34, commutator; 35, connecting plate; 36, second guide rail; 37, casting plate; 38, limit block; 39, movable plate; 40, crossbeam; 41, third guide rail; 42, clamping seat; 43, guide sleeve; 44, guide seat; 45, guide rod. DETAILED DESCRIPTION

[0032] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings: like Figure 1 and Figure 2As shown, an EPS steering test bench includes a test bench body arranged in a fence 1 and an electric control box 2 for controlling the test bench, the test bench includes a base 3 arranged on the ground and a mounting platform 4 fixedly arranged on the base 3, the mounting platform 4 is provided with a mounting bracket 5 for mounting a subframe, the mounting bracket 5 is provided with a clamping platform 6 for mounting ESP and adjusting the height, the mounting platform 4 is provided with a jacking assembly 7 for abutting under the tire of the subframe and for adjusting various road condition tests under different pressures, the jacking assembly 7 is provided with two and respectively located on both sides of the above-mentioned mounting bracket 5, the mounting platform 4 is provided with a suspension 8 for connecting and fixing a shock absorber, the suspension 8 is located above the above-mentioned mounting bracket 5, and the test platform also includes a servo drive mechanism 9 for driving the steering of the subframe. The adjustable clamping platform 6, the lifting assembly 7 and the suspension 8 can be used to conveniently install subframes of different types. The setting of the lifting assembly 7 can realize the road condition simulation under different conditions, and simulate the functional design, working condition characteristics and load test process of the real asphalt road condition. It is simple and convenient to use, the control is precise, and it is convenient for data collection.

[0033] like Figure 3 and Figure 4 As shown, the mounting bracket 5 includes two mounting frames 10 fixedly arranged on the mounting platform 4, and the two mounting frames 10 are arranged oppositely. The upper ends of the mounting frames 10 are respectively fixedly provided with a first clamping block 11 and a second clamping block 12 for mounting and fixing the lower arm of the sub-frame. The first clamping block 11 is fixedly arranged on the above-mentioned mounting frame 10, and the second clamping block 12 is rotatably arranged on the mounting frame 10 through a mounting seat 13. A limiting plate 14 located below the above-mentioned second clamping block 12 is fixedly arranged on the mounting seat 13. The limiting plate 14 is provided with an arc-shaped limiting groove 15, and the limiting groove 15 is surrounded by the outer periphery of the rotation center of the above-mentioned second clamping block 12. The lower end of the second clamping block 12 is arranged in the limiting groove 15 by bolts to complete the angle adjustment and locking of the second clamping block 12. The inner sides of the first clamping block 11 and the second clamping block 12 are provided with anti-slip grooves 16, which are more stable after clamping. The base 3 is installed on the ground through a seismic isolation pad 17. The mounting seat 13 can conveniently adjust the angle of the second clamping block 12 for mounting and fixing lower arms of different sizes. After adjusting to the required angle, the second clamping block 12 can be fixed on the limiting plate 14 by tightening the bolts. like Figure 5As shown, the clamping platform 6 includes two mounting plates 18 fixedly arranged on the above-mentioned mounting platform 4, the two mounting plates 18 are arranged opposite to each other, and a lifting platform 19 is movably arranged between the two mounting plates 18, and a mounting beam 20 for installing the lower boom is fixedly arranged on the lifting platform 19, and a guide plate 21 is fixedly arranged on both sides of the lower end of the lifting platform 19, and the guide plate 21 is movably arranged on the above-mentioned mounting plate 18 through a first guide rail 22. A lifting mechanism 23 for lifting the lifting platform 19 is fixedly arranged on the mounting platform 4, and the lifting mechanism 23 is located directly below the above-mentioned lifting platform 19. First locking plates 24 for locking the lifting platform 19 after the height of the lifting platform 19 is adjusted are arranged on both sides of the lifting platform 19, and the first locking plates 24 are fixedly arranged on the above-mentioned mounting platform 4. The first locking plate 24 is provided with a locking groove 25 that passes through the first locking plate 24 in the horizontal direction and extends in the vertical direction. The second locking plates 26 that extend downward are fixed on both sides of the lifting platform 19. The second locking plate 26 is provided with a plurality of locking holes 27 that match the locking grooves 25. The lifting platform 19 is locked by inserting bolts into the locking holes 27 and the locking grooves 25. After the height of the lifting platform 19 is adjusted by the lifting mechanism 23, the height of the lifting platform 19 can be fixed by the matching locking grooves 25 and locking holes 27, and the lifting platform 19 is always lifted and lowered in a horizontal state by the first guide rail 22 between the mounting plate 18 and the guide plate 21.

[0034] like Figure 6-8As shown, the jacking assembly 7 includes a mounting block 28 fixedly arranged on the base 3 and two relatively arranged fixed plates 29, the two fixed plates 29 are respectively fixedly arranged on the above-mentioned mounting block 28 and the mounting platform 4, and a jacking station is formed above the mounting platform 4 and between the two fixed plates 29, in which a support plate 30 is movably arranged, and the two sides of the support plate 30 are respectively movably arranged on the two fixed plates 29 through second guide rails 36, and a lifter 31 for lifting the support plate 30 is movably arranged below the support plate 30, and the lifter 31 is fixedly arranged on the movable plate 39, and the lower end of the movable plate 39 is fixedly arranged on the base 3 through a plurality of weighing sensors 32, and the weighing sensors 32 are provided with four and are evenly distributed between the movable plate 39 and the base 3, and a motor 33 for driving the above-mentioned lifter 31 to realize the up and down movement of the support plate 30 is fixedly arranged on the movable plate 39. A plurality of limit blocks 38 are fixedly arranged on the upper end of the fixing plate 29, and the limit blocks 38 extend in the horizontal direction, and one end of the limit blocks 38 is located above the support plate 30. A casting plate 37 is fixedly arranged on the support plate 30 for abutting against the lower part of the tire of the sub-frame, and the casting plate 37 is cast by cement. After the sub-frame is installed, the wheel presses against the casting plate, and the support plate 30 is driven to move in the vertical direction by the elevator 31 to adjust the state between the wheel and the casting plate under different road conditions, and the multiple weighing sensors 32 can accurately detect the force in the process of wheel steering, and the detection is more accurate. However, the casting plate 37 cast by cement is in contact with the tire, which can more accurately simulate the actual use of the tire. In addition, the two jacking components 7 are symmetrically arranged on both sides of the installation platform 4, which can realize individual or simultaneous lifting and lowering, realize the testing of the equipment under various road conditions, and the test effect is more accurate.

[0035] Two elevators 31 are provided and are arranged opposite to each other on the movable plate 39. A commutator 34 is provided between the two elevators 31, and the motor 33 drives the elevators 31 to work through the commutator 34. A connecting plate 35 is fixedly provided at the upper end of the elevator 31 for abutting against the lower end of the support plate 30. The two elevators 31 are driven to work synchronously by one click, so that the two elevators 31 always move synchronously, and the support plate 30 is more stable when moving.

[0036] like Fig. 9 and Fig.10As shown, the suspension 8 is provided with two crossbeams 40 that can move along the length direction of the suspension 8. The crossbeam 40 is movably provided on the suspension 8 through a third guide rail 41. A clamping seat 42 that extends downward and is used to install the upper fork arm is fixedly provided on the crossbeam 40. The two ends of the crossbeam 40 are respectively fixed with guide sleeves 43 that are sleeved on the suspension 8. The third guide rail 41 is located between the guide sleeve 43 and the suspension 8 and the third guide rail 41 is located at the lower end of the suspension 8. The two ends of the crossbeam 40 are respectively provided with a guide seat 44 that is fixedly provided on the suspension 8. Two guide rods 45 that extend along the moving direction of the crossbeam 40 are fixedly provided on the guide seat 44. The guide rods 45 are inserted on the crossbeam 40, and the two guide rods 45 are not located in the same straight line direction. The two guide rods 45 are respectively located on both sides of one end of the crossbeam 40. The movable crossbeam 40 can be conveniently adjusted in position for installing different sub-frames. The crossbeam 40 and the guide sleeve 43 are provided to make the crossbeam 40 more stable when moving, and the guide seat 44 and the guide rod 45 are provided to guide the crossbeam 40 and limit the position at the same time.

[0037] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, the obvious changes or changes in the description derived therefrom are still within the scope of protection of the present invention.

Claims

1. An EPS steering test bench, It is characterized in that The invention comprises a test bench body arranged in a fence (1) and an electric control box (2) for controlling the test bench, the test bench comprising a base (3) arranged on the ground and a mounting platform (4) fixedly arranged on the base (3), characterized in that a mounting bracket (5) for mounting a subframe is arranged on the mounting platform (4), a clamping platform (6) for mounting an ESP and adjusting the height is arranged in the mounting bracket (5), a lifting assembly (7) for abutting against the bottom of the tire of the subframe and for adjusting different pressures to realize various road condition tests is arranged on the mounting platform (4), two lifting assemblies (7) are arranged and are respectively located on both sides of the mounting bracket (5), a suspension (8) for connecting and fixing a shock absorber is arranged on the mounting platform (4), and the suspension (8) is located above the mounting bracket (5), and the test platform further comprises a servo drive mechanism (9) for driving the steering of the subframe.

2. The EPS steering test bench according to claim 1, It is characterized in that The mounting bracket (5) comprises two mounting frames (10) fixedly arranged on the mounting platform (4), the two mounting frames (10) being arranged opposite to each other, and the upper ends of the mounting frames (10) are respectively fixedly provided with a first clamping block (11) and a second clamping block (12) for mounting and fixing the lower arm of the sub-frame, the first clamping block (11) being fixedly arranged on the mounting frame (10), the second clamping block (12) being rotatably arranged on the mounting frame (10) through a mounting seat (13), and a limiting plate (14) located below the second clamping block (12) being fixedly arranged on the mounting seat (13), the limiting plate (14) being provided with an arc-shaped limiting groove (15), the limiting groove (15) being surrounded by the outer periphery of the rotation center of the second clamping block (12), and the lower end of the second clamping block (12) being arranged in the limiting groove (15) by a bolt to complete the angle adjustment and locking of the second clamping block (12).

3. The EPS steering test bench according to claim 1, It is characterized in that The clamping platform (6) comprises two mounting plates (18) fixedly arranged on the mounting platform (4), the two mounting plates (18) being arranged opposite to each other, a lifting platform (19) being movably arranged between the two mounting plates (18), a mounting beam (20) for mounting the lower boom being fixedly arranged on the lifting platform (19), a guide plate (21) being fixedly arranged on both sides of the lower end of the lifting platform (19), the guide plate (21) being movably arranged on the mounting plate (18) via a first guide rail (22), a lifting mechanism (23) for lifting the lifting platform (19) being fixedly arranged on the mounting platform (4), the lifting mechanism (23) being located directly below the lifting platform (19), first locking plates (24) for locking the lifting platform (19) after the height of the lifting platform (19) is adjusted being arranged on both sides of the lifting platform (19), the first locking plates (24) being fixedly arranged on the mounting platform (4).

4. The EPS steering test bench according to claim 3, It is characterized in that The first locking plate (24) is provided with a locking groove (25) which passes through the first locking plate (24) in a horizontal direction and extends in a vertical direction. Second locking plates (26) extending downward are fixedly provided on both sides of the lifting platform (19). The second locking plate (26) is provided with a plurality of locking holes (27) which match the locking groove (25). The lifting platform (19) is locked by inserting bolts into the locking holes (27) and the locking grooves (25).

5. The EPS steering test bench according to claim 1, It is characterized in that The lifting assembly (7) comprises a mounting block (28) fixedly mounted on a base (3) and two fixed plates (29) arranged opposite to each other, the two fixed plates (29) being fixedly mounted on the mounting block (28) and the mounting platform (4) respectively, a lifting station being formed above the mounting platform (4) and between the two fixed plates (29), a support plate (30) being movably mounted in the lifting station, two sides of the support plate (30) being movably mounted on the two fixed plates (29) respectively via second guide rails (36), the support plate ( A lift (31) for lifting the support plate (30) is movably arranged below the movable plate (30), the lift (31) being fixedly arranged on the movable plate (39), the lower end of the movable plate (39) being fixedly arranged on the base (3) via a plurality of weighing sensors (32), four of the weighing sensors (32) being arranged and evenly distributed between the movable plate (39) and the base (3), and a motor (33) for driving the lift (31) to work and realize the upward and downward movement of the support plate (30) being fixedly arranged on the movable plate (39).

6. The EPS steering test bench according to claim 5, It is characterized in that Two elevators (31) are provided and arranged opposite to each other on the movable plate (39). A commutator (34) is provided between the two elevators (31). The motor (33) drives the elevators (31) to work via the commutator (34). A connecting plate (35) is fixedly provided at the upper end of the elevator (31) for abutting against the lower end of the support plate (30).

7. The EPS steering test bench according to claim 5, It is characterized in that A casting plate (37) for abutting against the underside of the tire of the auxiliary frame is fixedly arranged on the support plate (30), and the casting plate (37) is cast by cement.

8. The EPS steering test bench according to claim 5, It is characterized in that A plurality of limit blocks (38) are fixedly disposed on the upper end of the fixed plate (29); the limit blocks (38) extend in a horizontal direction, and one end of the limit blocks (38) is located on the support plate (30).

9. The EPS steering test bench according to claim 1, It is characterized in that The suspension (8) is movably provided with two crossbeams (40) that can move along the length direction of the suspension (8); the crossbeams (40) are movably provided on the suspension (8) via third guide rails (41); a clamping seat (42) extending downward and used for mounting an upper fork arm is fixedly provided on the crossbeam (40); guide sleeves (43) sleeved on the suspension (8) are fixedly provided at both ends of the crossbeam (40); the third guide rail (41) is located between the guide sleeve (43) and the suspension (8); and the third guide rail (41) is located at the lower end of the suspension (8).

10. The EPS steering test bench according to claim 9, It is characterized in that A guide seat (44) is respectively provided at both ends of the cross beam (40). The guide seat (44) is fixedly provided on the suspension frame (8). Two guide rods (45) extending along the moving direction of the cross beam (40) are fixedly provided on the guide seat (44). The guide rods (45) are inserted on the cross beam (40). The two guide rods (45) are not located in the same straight line direction. The two guide rods (45) are respectively located on both sides of one end of the cross beam (40).

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