CN110160780B - Dynamic and static vertical loading device for electric wheel performance test bench - Google Patents
Dynamic and static vertical loading device for electric wheel performance test bench Download PDFInfo
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- CN110160780B CN110160780B CN201910537124.6A CN201910537124A CN110160780B CN 110160780 B CN110160780 B CN 110160780B CN 201910537124 A CN201910537124 A CN 201910537124A CN 110160780 B CN110160780 B CN 110160780B
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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
- G01M13/026—Test-benches of the mechanical closed-loop type, i.e. having a gear system constituting a closed-loop in combination with the object under test
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/027—Test-benches with force-applying means, e.g. loading of drive shafts along several directions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention provides a dynamic and static vertical loading device for an electric wheel performance test bed, aiming at the problems of an independent static vertical load loading device and an independent dynamic vertical load loading device of the test bed, the loading device can realize both static vertical load loading and dynamic vertical load loading, and can accurately simulate the vertical load change condition of the electric wheel caused by factors such as vehicle loading, deceleration and the like in the road running process of a real vehicle by combining the dynamic loading and the static loading, wherein the static loading device is used for simulating the basic load of the electric wheel in the running process, the load is equal to the minimum vertical load in the whole experimental working condition, the rest part is simulated by the dynamic loading device, so that the dynamic load simulation part is reduced, the torque capacity requirement on a dynamic load loading motor is reduced, and the load simulation precision can be effectively improved, the control difficulty is reduced, the electric energy consumption of the test bed is reduced, and the cost of the test bed and the test cost are effectively saved.
Description
Technical Field
The invention relates to the field of electric vehicle test beds, in particular to a dynamic and static vertical loading device for an electric wheel performance test bed.
Background
With the year-by-year increase of the quantity of automobiles in China and the increasing prominence of the severity of the problems of energy safety and environmental pollution, new energy automobiles become one of the main directions of the technical development of the automobiles in China; in the past decade, new energy automobiles have significant contribution to energy conservation and emission reduction, and along with the gradual maturity of key technologies and the further deterioration of environmental problems of the existing new energy automobiles, the energy-saving requirements of people on the new energy automobiles are gradually improved, which is visible from the evolution of national support policies; for example, in 2009, at the beginning of the new energy automobile industrialization era, mild hybrid electric vehicles can obtain national subsidies; in 2012, the national policy requires that the energy-saving effect of the hybrid electric bus is more than 10% to obtain subsidies; in 2014, five committees such as the Ministry of industry and communications jointly send a notice for strengthening the management of the average fuel consumption of passenger vehicle enterprises, the aim that the average fuel consumption of the domestic passenger vehicle enterprises is reduced to 6.9L/100km in 2015 is achieved, five punishment measures with unprecedented dynamics are also provided for the enterprises which do not reach the standard, the aim is difficult to achieve only by the traditional vehicles and the hybrid electric vehicles, therefore, the development of pure electric vehicles becomes a necessary choice for the Chinese automobile enterprises, and meanwhile, new energy vehicles are always key support objects of the government in China.
Through development for many years, a great deal of work is done by two-wheeled centralized driving type electric vehicles in the aspects of key components, whole vehicle integration, demonstration operation and the like by colleges and universities/scientific research institutions/enterprises, the technology is gradually mature, the whole vehicle economy is basically stable under the condition that assemblies such as motors and batteries are fixed, and the lifting space is small. In order to improve the overall economy of the electric vehicle, the following three approaches are mainly adopted except for improving the efficiency characteristic of the existing assembly: the method has the advantages that firstly, the transmission efficiency of the whole vehicle is improved from the aspect of structure, secondly, the driving efficiency of the whole vehicle is optimized from the aspect of whole vehicle control, and thirdly, the braking energy recovery rate of the whole vehicle is optimized. The electric wheel electric vehicle improves the transmission efficiency of the whole vehicle and simplifies the chassis structure because the transmission parts such as a speed changer, a clutch, a differential mechanism, a half shaft and the like are eliminated, provides possibility for the three energy-saving ways and becomes one of important directions for the development of new energy vehicles.
The electric wheel electric vehicle brings the advantages and simultaneously also brings the following problems: the unsprung mass of the whole vehicle is greatly changed after the electric wheels are adopted, so that the influence of the change of the vertical load of the wheels on the performance of the whole vehicle of the hub motor electric vehicle is large, and the key for testing the performance of the electric wheels and the electric vehicle with the electric wheels is realized by accurately simulating the change of the vertical load of the wheels in the running process of the real vehicle.
At present, the simulation of the vertical load of the wheel by the test bed mainly comprises two types of static simulation and dynamic simulation: when the automobile runs on a horizontal good road surface at a constant speed in a straight line, the vertical loads of the four wheels basically keep unchanged, so that a static load loading mode can be used when the vertical force applied to the wheels is simulated on a test bed; when the automobile runs at an acceleration state and a deceleration state, the load transfer between the shafts can change the vertical stress of the front wheel and the rear wheel of the automobile, namely the vertical load on the front wheel is reduced when the automobile accelerates, and the vertical load on the front wheel is increased when the automobile decelerates; when the automobile runs on a turn or an uneven road surface, the vertical load of the wheels can also change; if a static loading mode is still adopted on the test bed at this time, the stress of the wheels on the test bed is inconsistent with the stress of the wheels on the road of the real vehicle, so that the authenticity of a performance test result is influenced; the dynamic loading device generally adopts a motor and a series of transmission parts for loading, if the dynamic loading device is completely adopted to apply vertical load to the wheel, under the condition of large applied load, the control precision and response speed of the load can be greatly reduced, and if the control precision of the load is greatly improved by improving the performance of the motor, the problem of high cost exists.
Disclosure of Invention
In order to solve the problems, the invention provides a dynamic and static vertical loading device for an electric wheel performance test bed, which can realize both static loading and dynamic loading.
The utility model provides a vertical loading device of dynamic and static for electronic round of capability test platform which characterized in that: the device consists of a first support frame, a second support frame, a U-shaped frame, an electric wheel suspension device, a static loading device and a dynamic loading device.
The first support frame consists of an L-shaped mounting base (1), a support frame first support arm (2), a first support frame support plate (6) and a support frame second support arm (16); a first support arm (2), a first support plate (6) and a second support arm (16) of the support frame are all cuboid structures; the A end of a first support arm (2) of a support frame is fixedly connected with the A surface of the L-shaped mounting base (1), the B end of the first support arm (2) of the support frame is fixedly connected with the B surface of a first support plate (6), and the first support arm (2) of the support frame is respectively vertical to the A surface of the L-shaped mounting base (1) and the B surface of the first support plate (6); the A end of a second support arm (16) of the support frame is fixedly connected with the A surface of the L-shaped mounting base (1), the B end of the second support arm (16) of the support frame is fixedly connected with the B surface of the first support plate (6), and the second support arm (16) of the support frame is respectively vertical to the A surface of the L-shaped mounting base (1) and the B surface of the first support plate (6); a first support circular through hole (30) is formed between the surface A and the surface B of the first support plate (6), and the axis of the first support circular through hole (30) is perpendicular to the surface A and the surface B of the first support plate (6) respectively.
The second support frame consists of a first support arm (3) of the second support frame, a support plate (5) of the second support frame, a second support arm (15) of the second support frame, a first support arm (22) of the electric wheel suspension device, a second support arm (24) of the electric wheel suspension device, a first lifting lug (34), a second lifting lug (35), a third lifting lug (36) and a fourth lifting lug (37); the first support arm (3) of the second support frame, the second support frame support plate (5), the second support arm (15) of the second support frame, the first support arm (22) of the electric wheel suspension device and the second support arm (24) of the electric wheel suspension device are all of cuboid structures; the A end of a first support arm (3) of the two support frames is fixedly connected with the A surface of the L-shaped mounting base (1), the B end of the first support arm (3) of the two support frames is fixedly connected with the B surface of a support plate (5) of the second support frame, and the first support arm (3) of the two support frames is respectively vertical to the A surface of the L-shaped mounting base (1) and the B surface of the support plate (5) of the second support frame; the end A of a second support arm (15) of the second support frame is fixedly connected with the surface A of the L-shaped mounting base (1), the end B of the second support arm (15) of the second support frame is fixedly connected with the surface B of a second support frame support plate (5), and the second support arm (15) of the second support frame is respectively vertical to the surface A of the L-shaped mounting base (1) and the surface B of the second support frame support plate (5); the first support arm (3) of the second support frame is parallel to the first support arm (2) of the first support frame, the second support frame support plate (5) is parallel to the first support frame support plate (6), the second support arm (15) of the second support frame is parallel to the second support arm (16) of the first support frame, and a support formed by the first support arm (3) of the second support frame, the second support frame support plate (5) and the second support arm (15) of the second support frame is positioned at the inner side of the first support frame; the A end of a first supporting arm (22) of the electric wheel suspension device is fixedly connected with the A surface of the L-shaped mounting base (1), the B end of the first supporting arm (22) of the electric wheel suspension device is fixedly connected with the B surface of a second supporting frame supporting plate (5), and the first supporting arm (22) of the electric wheel suspension device is respectively vertical to the A surface of the L-shaped mounting base (1) and the B surface of the second supporting frame supporting plate (5); the A end of a second supporting arm (24) of the electric wheel suspension device is fixedly connected with the A surface of the L-shaped mounting base (1), the B end of the second supporting arm (24) of the electric wheel suspension device is fixedly connected with the B surface of a second supporting frame supporting plate (5), and the second supporting arm (24) of the electric wheel suspension device is respectively vertical to the A surface of the L-shaped mounting base (1) and the B surface of the second supporting frame supporting plate (5); a first square through hole (31) of the second support frame, a circular threaded through hole (32) of the second support frame and a second square through hole (33) of the second support frame are arranged between the surface A and the surface B of the second support frame support plate (5), and the central line of the first square through hole (31) of the second support frame, the central axis of the circular threaded through hole (32) of the second support frame and the central line of the second square through hole (33) of the second support frame are parallel to each other and are perpendicular to the surface A and the surface B of the second support frame support plate (5); a third lifting lug (36) and a fourth lifting lug (37) are fixedly mounted on a first supporting arm (22) of the electric wheel suspension device, and the distance between the third lifting lug (36) and the fourth lifting lug (37) is equal to the thickness of a first supporting cross arm (46) of a bearing plate; a first lifting lug (34) and a second lifting lug (35) are fixedly mounted on a second supporting arm (24) of the electric wheel suspension device, and the distance between the first lifting lug (34) and the second lifting lug (35) is equal to the thickness of a second supporting cross arm (49) of the bearing plate; the first lifting lug (34), the second lifting lug (35), the third lifting lug (36) and the fourth lifting lug (37) are all provided with lifting lug holes (38).
The electric wheel suspension device consists of a bearing plate (25), a first bearing cross arm (46) of the bearing plate and a second bearing cross arm (49) of the bearing plate; the bearing plate (25) is of a cuboid structure, a first circular bearing plate groove (27) is arranged at the center of the A surface of the bearing plate (25), a second circular bearing plate groove (51) is arranged at the center of the plane opposite to the A surface, the projections of the first circular bearing plate groove (27) and the second circular bearing plate groove (51) on the front view are mutually overlapped, the axes of the first circular bearing plate groove and the second circular bearing plate groove are both vertical to the A surface of the bearing plate (25), and 6 bearing plate threaded through holes (43) which are uniformly distributed and the axes of which are parallel to the axes of the two grooves are arranged between the first circular bearing plate groove (27) and the second circular bearing plate groove (51); a bearing plate first square groove (41), a bearing plate second square groove (42) and a bearing plate third square groove (44) are arranged on the C surface of the bearing plate (25), and the central line of the bearing plate first square groove (41), the central line of the bearing plate second square groove (42) and the central line of the bearing plate third square groove (44) are parallel to each other and are respectively vertical to the C surface of the bearing plate (25); a first square groove threaded through hole (39) of the bearing plate and a second square groove threaded through hole (40) of the bearing plate are arranged between the B surface of the bearing plate (25) and the first square groove (41) of the bearing plate, and the center line of the first square groove threaded through hole (39) of the bearing plate and the center line of the second square groove threaded through hole (40) of the bearing plate are parallel to each other and are perpendicular to the B surface of the bearing plate (25); a first threaded through hole (45) of the three square grooves of the bearing plate and a second threaded through hole (50) of the three square grooves of the bearing plate are arranged between a plane opposite to the surface B of the bearing plate (25) and the third square grooves (44), and the central line of the first threaded through hole (45) of the three square grooves of the bearing plate and the central line of the second threaded through hole (50) of the three square grooves of the bearing plate are parallel to each other and are perpendicular to the surface B of the bearing plate (25); the A end of the first supporting cross arm (46) of the bearing plate is provided with a first supporting cross arm through hole (47), the other end, opposite to the A end, of the first supporting cross arm (46) of the bearing plate is fixedly connected with the A surface of the bearing plate (25), and the first supporting cross arm (46) of the bearing plate is vertical to the A surface of the bearing plate (25); a bearing plate second supporting cross arm through hole (48) is formed in the end A of a bearing plate second supporting cross arm (49), the other end, opposite to the end A, of the bearing plate second supporting cross arm (49) is fixedly connected with the surface A of the bearing plate (25), and the bearing plate second supporting cross arm (49) is perpendicular to the surface A of the bearing plate (25); the A end of a first supporting cross arm (46) of the bearing plate is arranged between the third lifting lug (36) and the fourth lifting lug (37), a through hole (47) of the first supporting cross arm of the bearing plate is aligned with a lifting lug hole of the third lifting lug (36) and a lifting lug hole of the fourth lifting lug (37), and the first supporting cross arm (46) of the bearing plate is connected with the first supporting arm (22) of the electric wheel suspension device through a hinge; the end A of a second supporting cross arm (49) of the bearing plate is arranged between the first lifting lug (34) and the second lifting lug (35), a through hole (48) of the second supporting cross arm of the bearing plate is aligned with a lifting lug hole of the first lifting lug (34) and a lifting lug hole of the second lifting lug (35), and the second supporting cross arm (49) of the bearing plate is connected with a second supporting arm (24) of the electric wheel suspension device through a hinge; the end part of the electric wheel fixing shaft (65) is placed in a second circular groove (51) of the bearing plate on the bearing plate (25), 6 electric wheel fixing shaft threaded holes (64) which are uniformly distributed on the electric wheel fixing shaft (65) and have axes parallel to the central line of the electric wheel fixing shaft (65) are aligned with 6 bearing plate threaded through holes (43), 6 second bolts (29) are screwed in the first circular groove (27) of the bearing plate, and the electric wheel fixing shaft (65) is fixedly connected with the bearing plate (25).
The U-shaped frame consists of a first support rod (4), a second support rod (11) and a third support rod (14); the first support rod (4) of the U-shaped frame, the second support rod (11) of the U-shaped frame and the third support rod (14) of the U-shaped frame are all of cuboid structures; the end B of the first support rod (4) of the U-shaped frame is fixedly connected with the surface B of the second support rod (11) of the U-shaped frame and is vertical to the surface B, a first threaded hole (59) of the U-shaped frame and a second threaded hole (60) of the U-shaped frame are formed in the end A of the first support rod (4) of the U-shaped frame, the central line of the first threaded hole (59) of the U-shaped frame and the central line of the second threaded hole (60) of the U-shaped frame are parallel to each other and are parallel to the surface A of the second support rod (11) of the U-shaped frame; the end B of the third supporting rod (14) of the U-shaped frame is fixedly connected with the surface B of the second supporting rod (11) of the U-shaped frame and is vertical to the surface B, a third threaded hole (62) and a fourth threaded hole (63) of the U-shaped frame are formed in the end A of the third supporting rod (14) of the U-shaped frame, the central line of the third threaded hole (62) of the U-shaped frame and the central line of the fourth threaded hole (63) of the U-shaped frame are parallel to each other and are parallel to the surface A of the second supporting rod (11) of the U-shaped frame; a U-shaped square groove (61) is arranged on the surface A of the second support rod (11) of the U-shaped frame, and the central line of the U-shaped square groove (61) is vertical to the surface A of the second support rod (11) of the U-shaped frame; a first support rod (4) of the U-shaped frame penetrates through a first square through hole (31) of a second support frame on a support plate (5) of the second support frame and is arranged in a third square groove (44) of the bearing plate, a second threaded hole (60) of the U-shaped frame on the first support rod (4) of the U-shaped frame is aligned with a first threaded through hole (45) of the third square groove of the bearing plate, a first threaded hole (59) of the U-shaped frame on the first support rod (4) of the U-shaped frame is aligned with a second threaded through hole (50) of the third square groove of the bearing plate, and the first support rod (4) of the U-shaped frame is fixedly connected with the bearing plate (25) through two first bolts (28); a third supporting rod (14) of the U-shaped frame penetrates through a second supporting frame second square through hole (33) in a second supporting frame supporting plate (5) to be installed in a first square groove (41) of a bearing plate, a third threaded hole (62) of the U-shaped frame in the third supporting rod (14) of the U-shaped frame is aligned with a second threaded through hole (40) of the square groove of the bearing plate, a fourth threaded hole (63) of the U-shaped frame in the third supporting rod (14) of the U-shaped frame is aligned with a first threaded through hole (39) of the square groove of the bearing plate, and the third supporting rod (14) of the U-shaped frame is fixedly connected with the bearing plate (25) through two first bolts (28).
The static loading device consists of a rotating handle (12) of the static loading device, a screw rod (13) of the static loading device and a second pressure sensor (26); the static loading device rotating handle (12) is fixedly connected with a static loading device screw rod (13), the static loading device screw rod (13) is matched with a circular threaded through hole (32) of a second support frame, the axis of the static loading device screw rod (13) is overlapped with the axis of the circular threaded through hole (32) of the second support frame, the static loading device screw rod (13) penetrates through the circular threaded through hole (32) of the second support frame to be vertically pressed above a second pressure sensor (26), and the second pressure sensor (26) is placed in a second square groove (42) of a bearing plate of the electric wheel suspension device.
The dynamic loading device consists of a dynamic loading device motor (9), a first pressure sensor (10), a dynamic loading device screw rod (23), a dynamic loading device worm wheel (53) and a dynamic loading device worm (54); the worm wheel (53) of the dynamic loading device and the worm (54) of the dynamic loading device are matched with each other; an output shaft of the motor (9) is fixedly connected with a worm (54) of the dynamic loading device, and the axes of the two are superposed; the axes of the worm wheel (53) of the dynamic loading device and the screw rod (23) of the dynamic loading device are superposed with each other and are connected through threads; a screw rod (23) of the dynamic loading device penetrates through a first support frame round through hole (30) on a first support frame support plate (6) and is vertically pressed above a first pressure sensor (10), and the first pressure sensor (10) is placed in a U-shaped frame square groove (61) above a second support rod (11) of the U-shaped frame.
Compared with the prior art, the invention has the beneficial effects that: applying a vertical force to the electric wheel on the test bed by adopting a dynamic and static combined loading mode; the static loading device with a simple structure is adopted to apply a certain vertical force to the electric wheel when the vertical load of the wheel caused by acceleration, deceleration and turning in the process of simulating the road running of the real vehicle is simulated, and the dynamic vertical load of the other part of the dynamic vertical load borne by the wheel is loaded by the dynamic load loading device, so that the size of the dynamic load can be effectively reduced, the load control precision is improved, and the requirements on the torque capacity of parts such as a dynamic load loading motor and the like are reduced, thereby saving the cost.
Drawings
FIG. 1 is an axial side view of a dynamic and static vertical loading device for an electric wheel.
FIG. 2 is a front view of the dynamic and static vertical loading device of the electric wheel.
FIG. 3 is a rear view of the dynamic and static vertical loading device of the electric wheel.
Fig. 4 is an isometric view of the first support bracket.
Fig. 5 is a front view of the first support bracket.
Fig. 6 is a side view of the first support bracket.
Fig. 7 is an isometric view of the second support bracket.
Fig. 8 is a front view of the second support bracket.
Fig. 9 is a top view of the second support bracket.
Figure 10 is a side view of a first support arm of the powered wheel suspension or a second support arm of the powered wheel suspension.
Fig. 11 is an axial view of the bearing plate.
Fig. 12 is a front view of the load bearing plate.
Fig. 13 is a top view of the bearing plate.
Figure 14 is a left side view of the load bearing plate.
Fig. 15 is a right side view of the bearing plate.
Fig. 16 is an axial view of the second support bracket mounted to the bearing plate.
Fig. 17 is an isometric view of the second support bracket, bearing plate and static loading device after they are installed.
Fig. 18 is a structural view of a dynamic loading apparatus.
FIG. 19 is a dynamic loading unit transmission isometric view.
FIG. 20 is a side view of the U-shaped frame.
Fig. 21 is a front view of the U-shaped frame.
FIG. 22 is a top view of the U-shaped frame.
Figure 23 is a left side view of the U-shaped frame.
Fig. 24 is a right side view of the U-shaped frame.
Fig. 25 is a side view of the electric axle.
Fig. 26 is an isometric view of the assembled motorized wheel, load-bearing plate, static loading device, and U-shaped frame.
In the drawings, 1. L-shaped mounting bases; 2. a first support arm of the support frame; 3. a first support arm of the second support frame; 4, a first support rod of the U-shaped frame; 5. a second support frame support plate; 6. a first support frame support plate; 7. a worm gear sealing barrel; 8. a worm sealing barrel; 9. a dynamic loading device motor; 10. a first pressure sensor; a second support bar of the U-shaped frame; 12. the static loading device rotates a handle; 13. a static loading device screw rod; a third support bar of the U-shaped frame; 15. a second support arm of the second support frame; 16. a second support arm of the support frame; 17. an electric wheel; 18. a drum; 19. a drum supporting shaft; 20. a drum supporting plate; 21. a drum support shaft bearing; 22. a first support arm of the electric wheel suspension device; 23. a dynamic loading device screw rod; 24. a second support arm of the electric wheel suspension device; 25. a bearing plate; 26. a second pressure sensor; 27. a bearing plate first circular groove; 28. a first bolt; 29. a second bolt; 30. a circular through hole of the first support frame; 31. a first square through hole of the two support frames; 32. a circular threaded through hole of the second support frame; 33. a second square through hole of the second support frame; 34. a first lifting lug; 35. a second lifting lug; 36. a third lifting lug; 37. a fourth lifting lug; 38. a lug hole; 39. a square groove first threaded through hole of the bearing plate; 40. a square groove second threaded through hole of the bearing plate; 41. a bearing plate first square groove; 42. a bearing plate second square groove; 43. a bearing plate threaded through hole; 44. the bearing plate third square groove; 45. the bearing plate is provided with a first square groove and a first threaded through hole; 46. the bearing plate is provided with a first supporting cross arm; 47. a bearing plate first supporting cross arm through hole; 48. a bearing plate second supporting cross arm through hole; 49. a bearing plate second supporting cross arm; 50. a bearing plate is provided with a third square groove and a second threaded through hole; 51. a bearing plate second circular groove; 52. a coupling; 53. a dynamic loading device worm gear; 54. a dynamic loading device worm; 55. a worm first bearing; 56. a worm second bearing; 57. a worm gear first thrust bearing; 58. a worm gear second thrust bearing; a first threaded hole of the U-shaped frame; 60, a second threaded hole of the U-shaped frame; 61. U-shaped square groove; a third threaded hole of the U-shaped frame; 63. U-shaped frame fourth screw hole; 64. a threaded hole of the electric wheel fixing shaft; 65. the electric wheel is fixed on the shaft.
Detailed description of the preferred embodiments
The invention aims to provide a dynamic and static vertical loading device for an electric wheel performance test bed, which can realize both static load vertical loading and dynamic load vertical loading, and has the advantages of simple and easy control and low cost; the vertical force applied to the electric wheels by the dynamic and static loading device can simulate the wheel load transfer caused by acceleration, deceleration and turning in the road running process of the real vehicle, so that the vertical stress of the electric wheels on the test bed is close to that of the electric wheels when the real vehicle runs on the road.
The technical scheme of the invention is further explained by combining the attached drawings.
A dynamic and static vertical loading device for an electric wheel performance test bench is composed of a first support frame, a second support frame, a U-shaped frame, an electric wheel suspension device, a static loading device and a dynamic loading device; the first support frame consists of an L-shaped mounting base (1), a support frame first support arm (2), a first support frame support plate (6) and a support frame second support arm (16); a first support arm (2), a first support plate (6) and a second support arm (16) of the support frame are all cuboid structures; the A end of a first support arm (2) of a support frame is fixedly connected with the A surface of the L-shaped mounting base (1), the B end of the first support arm (2) of the support frame is fixedly connected with the B surface of a first support plate (6), and the first support arm (2) of the support frame is respectively vertical to the A surface of the L-shaped mounting base (1) and the B surface of the first support plate (6); the A end of a second support arm (16) of the support frame is fixedly connected with the A surface of the L-shaped mounting base (1), the B end of the second support arm (16) of the support frame is fixedly connected with the B surface of the first support plate (6), and the second support arm (16) of the support frame is respectively vertical to the A surface of the L-shaped mounting base (1) and the B surface of the first support plate (6); a first support circular through hole (30) is formed between the surface A and the surface B of the first support plate (6), and the axis of the first support circular through hole (30) is perpendicular to the surface A and the surface B of the first support plate (6) respectively.
The second support frame consists of a first support arm (3) of the second support frame, a support plate (5) of the second support frame, a second support arm (15) of the second support frame, a first support arm (22) of the electric wheel suspension device, a second support arm (24) of the electric wheel suspension device, a first lifting lug (34), a second lifting lug (35), a third lifting lug (36) and a fourth lifting lug (37); the first support arm (3) of the second support frame, the second support frame support plate (5), the second support arm (15) of the second support frame, the first support arm (22) of the electric wheel suspension device and the second support arm (24) of the electric wheel suspension device are all of cuboid structures; the A end of a first support arm (3) of the two support frames is fixedly connected with the A surface of the L-shaped mounting base (1), the B end of the first support arm (3) of the two support frames is fixedly connected with the B surface of a support plate (5) of the second support frame, and the first support arm (3) of the two support frames is respectively vertical to the A surface of the L-shaped mounting base (1) and the B surface of the support plate (5) of the second support frame; the end A of a second support arm (15) of the second support frame is fixedly connected with the surface A of the L-shaped mounting base (1), the end B of the second support arm (15) of the second support frame is fixedly connected with the surface B of a second support frame support plate (5), and the second support arm (15) of the second support frame is respectively vertical to the surface A of the L-shaped mounting base (1) and the surface B of the second support frame support plate (5); the first support arm (3) of the second support frame is parallel to the first support arm (2) of the first support frame, the second support frame support plate (5) is parallel to the first support frame support plate (6), the second support arm (15) of the second support frame is parallel to the second support arm (16) of the first support frame, and a support formed by the first support arm (3) of the second support frame, the second support frame support plate (5) and the second support arm (15) of the second support frame is positioned at the inner side of the first support frame; the A end of a first supporting arm (22) of the electric wheel suspension device is fixedly connected with the A surface of the L-shaped mounting base (1), the B end of the first supporting arm (22) of the electric wheel suspension device is fixedly connected with the B surface of a second supporting frame supporting plate (5), and the first supporting arm (22) of the electric wheel suspension device is respectively vertical to the A surface of the L-shaped mounting base (1) and the B surface of the second supporting frame supporting plate (5); the A end of a second supporting arm (24) of the electric wheel suspension device is fixedly connected with the A surface of the L-shaped mounting base (1), the B end of the second supporting arm (24) of the electric wheel suspension device is fixedly connected with the B surface of a second supporting frame supporting plate (5), and the second supporting arm (24) of the electric wheel suspension device is respectively vertical to the A surface of the L-shaped mounting base (1) and the B surface of the second supporting frame supporting plate (5); a first square through hole (31) of the second support frame, a circular threaded through hole (32) of the second support frame and a second square through hole (33) of the second support frame are arranged between the surface A and the surface B of the second support frame support plate (5), and the central line of the first square through hole (31) of the second support frame, the central axis of the circular threaded through hole (32) of the second support frame and the central line of the second square through hole (33) of the second support frame are parallel to each other and are perpendicular to the surface A and the surface B of the second support frame support plate (5); a third lifting lug (36) and a fourth lifting lug (37) are fixedly mounted on a first supporting arm (22) of the electric wheel suspension device, and the distance between the third lifting lug (36) and the fourth lifting lug (37) is equal to the thickness of a first supporting cross arm (46) of a bearing plate; a first lifting lug (34) and a second lifting lug (35) are fixedly mounted on a second supporting arm (24) of the electric wheel suspension device, and the distance between the first lifting lug (34) and the second lifting lug (35) is equal to the thickness of a second supporting cross arm (49) of the bearing plate; the first lifting lug (34), the second lifting lug (35), the third lifting lug (36) and the fourth lifting lug (37) are all provided with lifting lug holes (38).
The electric wheel suspension device consists of a bearing plate (25), a first bearing cross arm (46) of the bearing plate and a second bearing cross arm (49) of the bearing plate; the bearing plate (25) is of a cuboid structure, a first circular bearing plate groove (27) is arranged at the center of the A surface of the bearing plate (25), a second circular bearing plate groove (51) is arranged at the center of the plane opposite to the A surface, the projections of the first circular bearing plate groove (27) and the second circular bearing plate groove (51) on the front view are mutually overlapped, the axes of the first circular bearing plate groove and the second circular bearing plate groove are both vertical to the A surface of the bearing plate (25), and 6 bearing plate threaded through holes (43) which are uniformly distributed and the axes of which are parallel to the axes of the two grooves are arranged between the first circular bearing plate groove (27) and the second circular bearing plate groove (51); a bearing plate first square groove (41), a bearing plate second square groove (42) and a bearing plate third square groove (44) are arranged on the C surface of the bearing plate (25), and the central line of the bearing plate first square groove (41), the central line of the bearing plate second square groove (42) and the central line of the bearing plate third square groove (44) are parallel to each other and are respectively vertical to the C surface of the bearing plate (25); a first square groove threaded through hole (39) of the bearing plate and a second square groove threaded through hole (40) of the bearing plate are arranged between the B surface of the bearing plate (25) and the first square groove (41) of the bearing plate, and the center line of the first square groove threaded through hole (39) of the bearing plate and the center line of the second square groove threaded through hole (40) of the bearing plate are parallel to each other and are perpendicular to the B surface of the bearing plate (25); a first threaded through hole (45) of the three square grooves of the bearing plate and a second threaded through hole (50) of the three square grooves of the bearing plate are arranged between a plane opposite to the surface B of the bearing plate (25) and the third square grooves (44), and the central line of the first threaded through hole (45) of the three square grooves of the bearing plate and the central line of the second threaded through hole (50) of the three square grooves of the bearing plate are parallel to each other and are perpendicular to the surface B of the bearing plate (25); the A end of the first supporting cross arm (46) of the bearing plate is provided with a first supporting cross arm through hole (47), the other end, opposite to the A end, of the first supporting cross arm (46) of the bearing plate is fixedly connected with the A surface of the bearing plate (25), and the first supporting cross arm (46) of the bearing plate is vertical to the A surface of the bearing plate (25); a bearing plate second supporting cross arm through hole (48) is formed in the end A of a bearing plate second supporting cross arm (49), the other end, opposite to the end A, of the bearing plate second supporting cross arm (49) is fixedly connected with the surface A of the bearing plate (25), and the bearing plate second supporting cross arm (49) is perpendicular to the surface A of the bearing plate (25); the A end of a first supporting cross arm (46) of the bearing plate is arranged between the third lifting lug (36) and the fourth lifting lug (37), a through hole (47) of the first supporting cross arm of the bearing plate is aligned with a lifting lug hole of the third lifting lug (36) and a lifting lug hole of the fourth lifting lug (37), and the first supporting cross arm (46) of the bearing plate is connected with the first supporting arm (22) of the electric wheel suspension device through a hinge; the end A of a second supporting cross arm (49) of the bearing plate is arranged between the first lifting lug (34) and the second lifting lug (35), a through hole (48) of the second supporting cross arm of the bearing plate is aligned with a lifting lug hole of the first lifting lug (34) and a lifting lug hole of the second lifting lug (35), and the second supporting cross arm (49) of the bearing plate is connected with a second supporting arm (24) of the electric wheel suspension device through a hinge; the end part of the electric wheel fixing shaft (65) is placed in a second circular groove (51) of the bearing plate on the bearing plate (25), 6 electric wheel fixing shaft threaded holes (64) which are uniformly distributed on the electric wheel fixing shaft (65) and have axes parallel to the central line of the electric wheel fixing shaft (65) are aligned with 6 bearing plate threaded through holes (43), 6 second bolts (29) are screwed in the first circular groove (27) of the bearing plate, and the electric wheel fixing shaft (65) is fixedly connected with the bearing plate (25).
The U-shaped frame consists of a first support rod (4), a second support rod (11) and a third support rod (14); the first support rod (4) of the U-shaped frame, the second support rod (11) of the U-shaped frame and the third support rod (14) of the U-shaped frame are all of cuboid structures; the end B of the first support rod (4) of the U-shaped frame is fixedly connected with the surface B of the second support rod (11) of the U-shaped frame and is vertical to the surface B, a first threaded hole (59) of the U-shaped frame and a second threaded hole (60) of the U-shaped frame are formed in the end A of the first support rod (4) of the U-shaped frame, the central line of the first threaded hole (59) of the U-shaped frame and the central line of the second threaded hole (60) of the U-shaped frame are parallel to each other and are parallel to the surface A of the second support rod (11) of the U-shaped frame; the end B of the third supporting rod (14) of the U-shaped frame is fixedly connected with the surface B of the second supporting rod (11) of the U-shaped frame and is vertical to the surface B, a third threaded hole (62) and a fourth threaded hole (63) of the U-shaped frame are formed in the end A of the third supporting rod (14) of the U-shaped frame, the central line of the third threaded hole (62) of the U-shaped frame and the central line of the fourth threaded hole (63) of the U-shaped frame are parallel to each other and are parallel to the surface A of the second supporting rod (11) of the U-shaped frame; a U-shaped square groove (61) is arranged on the surface A of the second support rod (11) of the U-shaped frame, and the central line of the U-shaped square groove (61) is vertical to the surface A of the second support rod (11) of the U-shaped frame; a first support rod (4) of the U-shaped frame penetrates through a first square through hole (31) of a second support frame on a support plate (5) of the second support frame and is arranged in a third square groove (44) of the bearing plate, a second threaded hole (60) of the U-shaped frame on the first support rod (4) of the U-shaped frame is aligned with a first threaded through hole (45) of the third square groove of the bearing plate, a first threaded hole (59) of the U-shaped frame on the first support rod (4) of the U-shaped frame is aligned with a second threaded through hole (50) of the third square groove of the bearing plate, and the first support rod (4) of the U-shaped frame is fixedly connected with the bearing plate (25) through two first bolts (28); a third supporting rod (14) of the U-shaped frame penetrates through a second supporting frame second square through hole (33) in a second supporting frame supporting plate (5) to be installed in a first square groove (41) of a bearing plate, a third threaded hole (62) of the U-shaped frame in the third supporting rod (14) of the U-shaped frame is aligned with a second threaded through hole (40) of the square groove of the bearing plate, a fourth threaded hole (63) of the U-shaped frame in the third supporting rod (14) of the U-shaped frame is aligned with a first threaded through hole (39) of the square groove of the bearing plate, and the third supporting rod (14) of the U-shaped frame is fixedly connected with the bearing plate (25) through two first bolts (28).
The static loading device consists of a rotating handle (12) of the static loading device, a screw rod (13) of the static loading device and a second pressure sensor (26); the static loading device rotating handle (12) is fixedly connected with a static loading device screw rod (13), the static loading device screw rod (13) is matched with a circular threaded through hole (32) of a second support frame, the axis of the static loading device screw rod (13) is overlapped with the axis of the circular threaded through hole (32) of the second support frame, the static loading device screw rod (13) penetrates through the circular threaded through hole (32) of the second support frame to be vertically pressed above a second pressure sensor (26), and the second pressure sensor (26) is placed in a second square groove (42) of a bearing plate of the electric wheel suspension device.
The dynamic loading device consists of a dynamic loading device motor (9), a first pressure sensor (10), a dynamic loading device screw rod (23), a dynamic loading device worm wheel (53) and a dynamic loading device worm (54); the worm wheel (53) of the dynamic loading device and the worm (54) of the dynamic loading device are matched with each other; an output shaft of the motor (9) is fixedly connected with a worm (54) of the dynamic loading device, and the axes of the two are superposed; the axes of the worm wheel (53) of the dynamic loading device and the screw rod (23) of the dynamic loading device are superposed with each other and are connected through threads; a screw rod (23) of the dynamic loading device penetrates through a first support frame round through hole (30) on a first support frame support plate (6) and is vertically pressed above a first pressure sensor (10), and the first pressure sensor (10) is placed in a U-shaped frame square groove (61) above a second support rod (11) of the U-shaped frame.
The left side and the right side of a worm (54) of the dynamic loading device are arranged in a worm sealing barrel (8) through a first worm bearing (55) and a second worm bearing (56), teeth on the worm (54) of the dynamic loading device are meshed with teeth on a worm wheel (53) of the dynamic loading device, and a second worm wheel thrust bearing (58) and a first worm wheel thrust bearing (57) are arranged on the upper plane and the lower plane of the worm wheel (53) of the dynamic loading device, so that the worm wheel (53) of the dynamic loading device is limited to move up and down in the worm wheel sealing barrel (7); the vertical force applied by the dynamic loading device is transmitted to the electric wheel suspension device through the U-shaped frame, so that vertical load can be applied to the electric wheels; the dynamic vertical force applied to the electric wheel by the dynamic loading device can be measured by the first pressure sensor (10).
The loading process of the dynamic loading device comprises the following steps: the dynamic loading device motor (9) rotates, the dynamic loading device worm (54) is driven to rotate through the coupler (52), the dynamic loading device worm (54) drives the dynamic loading device worm wheel (53) to rotate through tooth meshing, the dynamic loading device worm wheel (53) can only do rotary motion due to the fact that the worm wheel second thrust bearing (58) and the worm wheel first thrust bearing (57) are arranged above and below the dynamic loading device worm wheel (53), the dynamic loading device screw rod (23) matched with the inner hole thread of the dynamic loading device worm wheel (53) moves up and down along with the rotation of the dynamic loading device worm wheel (53), and therefore the vertical force applied to the U-shaped frame can be adjusted, and the vertical load applied to the electric wheel can be adjusted; the first pressure sensor (10) is used for measuring a dynamic pressure value to realize closed-loop control of the dynamic load.
The loading process of the static loading comprises the following steps: the rotating handle (12) of the static loading device is rotated, the screw rod (13) of the static loading device and the circular threaded through hole (32) of the second support frame relatively rotate, and the second support frame supporting plate (5) is fixed, so that the screw rod can move downwards due to the relative rotation between the screw rod (13) of the static loading device and the circular threaded through hole (32) of the second support frame and is pressed on the upper plane of the bearing plate (25) through the second pressure sensor (26), and the electric wheel fixedly connected on the bearing plate (25) is pressed on the roller (18) under the static loading force; the second pressure sensor (26) is used to measure a static pressure value to enable closed loop control of the static pressure.
The working principle of the dynamic and static vertical loading device for the electric wheel performance test bench for vertically loading the electric wheels provided by the invention is as follows: if the vertical load of the electric wheel does not change in the test process, the vertical load can be completely applied by the static loading device; in the running process of the automobile, the vertical load of each wheel is continuously changed due to wheel load transfer caused by acceleration, deceleration and steering, but under the specified running condition, the change range of the vertical load can be calculated according to the maximum longitudinal acceleration, the maximum lateral acceleration and the like of the running automobile; namely, a stress interval of wheels in the driving process of the automobile can be obtained, and the interval is assumed to be [ Fmin, Fmax ]; at the moment, the vertical load needing to be applied to the electric wheel by the static loading device is Fmin, and the rest part can be applied to the electric wheel by the dynamic loading device and adjusted in real time according to the working condition.
In the test process, the wheel load transfer caused by acceleration and deceleration in the automobile running process is calculated according to a specific running working condition, the vertical load required to be applied to the electric wheel in each time step in the bench test process is calculated, and the vertical load required to be loaded by dynamic loading is obtained by subtracting the vertical load applied by the static loading device from the calculated vertical load, so that the dynamic loading of the vertical load is completed.
According to the invention, a dynamic and static loading mode is adopted to apply a vertical force to the electric wheel on the test bed; according to the driving working condition of the automobile, a static loading device with a simple structure can be adopted to apply a certain vertical load to the electric wheel, and the vertical load of the other part of dynamic change of the wheel is loaded by the electric device, so that the requirement on the torque capacity of a dynamic load loading motor can be effectively reduced, the simulation precision is improved, the structure of the test bed can be simplified, the electric energy consumption of the test bed is reduced, and the test cost is saved.
Claims (1)
1. The utility model provides a vertical loading device of dynamic and static for electronic round of capability test platform which characterized in that: the device comprises a first support frame, a second support frame, a U-shaped frame, an electric wheel suspension device, a static loading device and a dynamic loading device;
the first support frame consists of an L-shaped mounting base (1), a support frame first support arm (2), a first support frame support plate (6) and a support frame second support arm (16); a first support arm (2), a first support plate (6) and a second support arm (16) of the support frame are all cuboid structures; the A end of a first support arm (2) of a support frame is fixedly connected with the A surface of the L-shaped mounting base (1), the B end of the first support arm (2) of the support frame is fixedly connected with the B surface of a first support plate (6), and the first support arm (2) of the support frame is respectively vertical to the A surface of the L-shaped mounting base (1) and the B surface of the first support plate (6); the A end of a second support arm (16) of the support frame is fixedly connected with the A surface of the L-shaped mounting base (1), the B end of the second support arm (16) of the support frame is fixedly connected with the B surface of the first support plate (6), and the second support arm (16) of the support frame is respectively vertical to the A surface of the L-shaped mounting base (1) and the B surface of the first support plate (6); a first support circular through hole (30) is formed between the surface A and the surface B of the first support supporting plate (6), and the axis of the first support circular through hole (30) is perpendicular to the surface A and the surface B of the first support supporting plate (6) respectively;
the second support frame consists of a first support arm (3) of the second support frame, a support plate (5) of the second support frame, a second support arm (15) of the second support frame, a first support arm (22) of the electric wheel suspension device, a second support arm (24) of the electric wheel suspension device, a first lifting lug (34), a second lifting lug (35), a third lifting lug (36) and a fourth lifting lug (37); the first support arm (3) of the second support frame, the second support frame support plate (5), the second support arm (15) of the second support frame, the first support arm (22) of the electric wheel suspension device and the second support arm (24) of the electric wheel suspension device are all of cuboid structures; the A end of a first support arm (3) of the two support frames is fixedly connected with the A surface of the L-shaped mounting base (1), the B end of the first support arm (3) of the two support frames is fixedly connected with the B surface of a support plate (5) of the second support frame, and the first support arm (3) of the two support frames is respectively vertical to the A surface of the L-shaped mounting base (1) and the B surface of the support plate (5) of the second support frame; the end A of a second support arm (15) of the second support frame is fixedly connected with the surface A of the L-shaped mounting base (1), the end B of the second support arm (15) of the second support frame is fixedly connected with the surface B of a second support frame support plate (5), and the second support arm (15) of the second support frame is respectively vertical to the surface A of the L-shaped mounting base (1) and the surface B of the second support frame support plate (5); the first support arm (3) of the second support frame is parallel to the first support arm (2) of the first support frame, the second support frame support plate (5) is parallel to the first support frame support plate (6), the second support arm (15) of the second support frame is parallel to the second support arm (16) of the first support frame, and a support formed by the first support arm (3) of the second support frame, the second support frame support plate (5) and the second support arm (15) of the second support frame is positioned at the inner side of the first support frame; the A end of a first supporting arm (22) of the electric wheel suspension device is fixedly connected with the A surface of the L-shaped mounting base (1), the B end of the first supporting arm (22) of the electric wheel suspension device is fixedly connected with the B surface of a second supporting frame supporting plate (5), and the first supporting arm (22) of the electric wheel suspension device is respectively vertical to the A surface of the L-shaped mounting base (1) and the B surface of the second supporting frame supporting plate (5); the A end of a second supporting arm (24) of the electric wheel suspension device is fixedly connected with the A surface of the L-shaped mounting base (1), the B end of the second supporting arm (24) of the electric wheel suspension device is fixedly connected with the B surface of a second supporting frame supporting plate (5), and the second supporting arm (24) of the electric wheel suspension device is respectively vertical to the A surface of the L-shaped mounting base (1) and the B surface of the second supporting frame supporting plate (5); a first square through hole (31) of the second support frame, a circular threaded through hole (32) of the second support frame and a second square through hole (33) of the second support frame are arranged between the surface A and the surface B of the second support frame support plate (5), and the central line of the first square through hole (31) of the second support frame, the central axis of the circular threaded through hole (32) of the second support frame and the central line of the second square through hole (33) of the second support frame are parallel to each other and are perpendicular to the surface A and the surface B of the second support frame support plate (5); a third lifting lug (36) and a fourth lifting lug (37) are fixedly mounted on a first supporting arm (22) of the electric wheel suspension device, and the distance between the third lifting lug (36) and the fourth lifting lug (37) is equal to the thickness of a first supporting cross arm (46) of a bearing plate; a first lifting lug (34) and a second lifting lug (35) are fixedly mounted on a second supporting arm (24) of the electric wheel suspension device, and the distance between the first lifting lug (34) and the second lifting lug (35) is equal to the thickness of a second supporting cross arm (49) of the bearing plate; the first lifting lug (34), the second lifting lug (35), the third lifting lug (36) and the fourth lifting lug (37) are all provided with lifting lug holes (38);
the electric wheel suspension device consists of a bearing plate (25), a first bearing cross arm (46) of the bearing plate and a second bearing cross arm (49) of the bearing plate; the bearing plate (25) is of a cuboid structure, a first circular bearing plate groove (27) is arranged at the center of the A surface of the bearing plate (25), a second circular bearing plate groove (51) is arranged at the center of the plane opposite to the A surface, the projections of the first circular bearing plate groove (27) and the second circular bearing plate groove (51) on the front view are mutually overlapped, the axes of the first circular bearing plate groove and the second circular bearing plate groove are both vertical to the A surface of the bearing plate (25), and 6 bearing plate threaded through holes (43) which are uniformly distributed and the axes of which are parallel to the axes of the two grooves are arranged between the first circular bearing plate groove (27) and the second circular bearing plate groove (51); a bearing plate first square groove (41), a bearing plate second square groove (42) and a bearing plate third square groove (44) are arranged on the C surface of the bearing plate (25), and the central line of the bearing plate first square groove (41), the central line of the bearing plate second square groove (42) and the central line of the bearing plate third square groove (44) are parallel to each other and are respectively vertical to the C surface of the bearing plate (25); a first square groove threaded through hole (39) of the bearing plate and a second square groove threaded through hole (40) of the bearing plate are arranged between the B surface of the bearing plate (25) and the first square groove (41) of the bearing plate, and the center line of the first square groove threaded through hole (39) of the bearing plate and the center line of the second square groove threaded through hole (40) of the bearing plate are parallel to each other and are perpendicular to the B surface of the bearing plate (25); a first threaded through hole (45) of the three square grooves of the bearing plate and a second threaded through hole (50) of the three square grooves of the bearing plate are arranged between a plane opposite to the surface B of the bearing plate (25) and the third square grooves (44), and the central line of the first threaded through hole (45) of the three square grooves of the bearing plate and the central line of the second threaded through hole (50) of the three square grooves of the bearing plate are parallel to each other and are perpendicular to the surface B of the bearing plate (25); the A end of the first supporting cross arm (46) of the bearing plate is provided with a first supporting cross arm through hole (47), the other end, opposite to the A end, of the first supporting cross arm (46) of the bearing plate is fixedly connected with the A surface of the bearing plate (25), and the first supporting cross arm (46) of the bearing plate is vertical to the A surface of the bearing plate (25); a bearing plate second supporting cross arm through hole (48) is formed in the end A of a bearing plate second supporting cross arm (49), the other end, opposite to the end A, of the bearing plate second supporting cross arm (49) is fixedly connected with the surface A of the bearing plate (25), and the bearing plate second supporting cross arm (49) is perpendicular to the surface A of the bearing plate (25); the A end of a first supporting cross arm (46) of the bearing plate is arranged between the third lifting lug (36) and the fourth lifting lug (37), a through hole (47) of the first supporting cross arm of the bearing plate is aligned with a lifting lug hole of the third lifting lug (36) and a lifting lug hole of the fourth lifting lug (37), and the first supporting cross arm (46) of the bearing plate is connected with the first supporting arm (22) of the electric wheel suspension device through a hinge; the end A of a second supporting cross arm (49) of the bearing plate is arranged between the first lifting lug (34) and the second lifting lug (35), a through hole (48) of the second supporting cross arm of the bearing plate is aligned with a lifting lug hole of the first lifting lug (34) and a lifting lug hole of the second lifting lug (35), and the second supporting cross arm (49) of the bearing plate is connected with a second supporting arm (24) of the electric wheel suspension device through a hinge; the end part of the electric wheel fixing shaft (65) is placed in a second circular groove (51) of the bearing plate on the bearing plate (25), 6 electric wheel fixing shaft threaded holes (64) which are uniformly distributed on the electric wheel fixing shaft (65) and have axes parallel to the central line of the electric wheel fixing shaft (65) are aligned with 6 bearing plate threaded through holes (43), 6 second bolts (29) are screwed in through the first circular groove (27) of the bearing plate, and the electric wheel fixing shaft (65) is fixedly connected with the bearing plate (25);
the U-shaped frame consists of a first support rod (4), a second support rod (11) and a third support rod (14); the first support rod (4) of the U-shaped frame, the second support rod (11) of the U-shaped frame and the third support rod (14) of the U-shaped frame are all of cuboid structures; the end B of the first support rod (4) of the U-shaped frame is fixedly connected with the surface B of the second support rod (11) of the U-shaped frame and is vertical to the surface B, a first threaded hole (59) of the U-shaped frame and a second threaded hole (60) of the U-shaped frame are formed in the end A of the first support rod (4) of the U-shaped frame, the central line of the first threaded hole (59) of the U-shaped frame and the central line of the second threaded hole (60) of the U-shaped frame are parallel to each other and are parallel to the surface A of the second support rod (11) of the U-shaped frame; the end B of the third supporting rod (14) of the U-shaped frame is fixedly connected with the surface B of the second supporting rod (11) of the U-shaped frame and is vertical to the surface B, a third threaded hole (62) and a fourth threaded hole (63) of the U-shaped frame are formed in the end A of the third supporting rod (14) of the U-shaped frame, the central line of the third threaded hole (62) of the U-shaped frame and the central line of the fourth threaded hole (63) of the U-shaped frame are parallel to each other and are parallel to the surface A of the second supporting rod (11) of the U-shaped frame; a U-shaped square groove (61) is arranged on the surface A of the second support rod (11) of the U-shaped frame, and the central line of the U-shaped square groove (61) is vertical to the surface A of the second support rod (11) of the U-shaped frame; a first support rod (4) of the U-shaped frame penetrates through a first square through hole (31) of a second support frame on a support plate (5) of the second support frame and is arranged in a third square groove (44) of the bearing plate, a second threaded hole (60) of the U-shaped frame on the first support rod (4) of the U-shaped frame is aligned with a first threaded through hole (45) of the third square groove of the bearing plate, a first threaded hole (59) of the U-shaped frame on the first support rod (4) of the U-shaped frame is aligned with a second threaded through hole (50) of the third square groove of the bearing plate, and the first support rod (4) of the U-shaped frame is fixedly connected with the bearing plate (25) through two first bolts (28); a third support rod (14) of the U-shaped frame penetrates through a second square through hole (33) of the second support frame on the support plate (5) of the second support frame and is arranged in a first square groove (41) of the bearing plate, a third threaded hole (62) of the U-shaped frame on the third support rod (14) of the U-shaped frame is aligned with a second threaded through hole (40) of the first square groove of the bearing plate, a fourth threaded hole (63) of the U-shaped frame on the third support rod (14) of the U-shaped frame is aligned with a first threaded through hole (39) of the first square groove of the bearing plate, and the third support rod (14) of the U-shaped frame is fixedly connected with the bearing plate (25) through two first bolts (28;
the static loading device consists of a rotating handle (12) of the static loading device, a screw rod (13) of the static loading device and a second pressure sensor (26); a rotating handle (12) of the static loading device is fixedly connected with a screw rod (13) of the static loading device, the screw rod (13) of the static loading device is matched with a circular threaded through hole (32) of a second support frame, the axis of the screw rod (13) of the static loading device is overlapped with the axis of the circular threaded through hole (32) of the second support frame, the screw rod (13) of the static loading device penetrates through the circular threaded through hole (32) of the second support frame and is vertically pressed above a second pressure sensor (26), and the second pressure sensor (26) is arranged in a second square groove (42) of a bearing plate of the electric wheel suspension device;
the dynamic loading device consists of a dynamic loading device motor (9), a first pressure sensor (10), a dynamic loading device screw rod (23), a dynamic loading device worm wheel (53) and a dynamic loading device worm (54); the worm wheel (53) of the dynamic loading device and the worm (54) of the dynamic loading device are matched with each other; an output shaft of the motor (9) is fixedly connected with a worm (54) of the dynamic loading device, and the axes of the two are superposed; the axes of the worm wheel (53) of the dynamic loading device and the screw rod (23) of the dynamic loading device are superposed with each other and are connected through threads; a screw rod (23) of the dynamic loading device penetrates through a first support frame round through hole (30) on a first support frame support plate (6) and is vertically pressed above a first pressure sensor (10), and the first pressure sensor (10) is placed in a U-shaped frame square groove (61) above a second support rod (11) of the U-shaped frame.
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| CN110470488A (en) * | 2019-09-20 | 2019-11-19 | 洛阳中科协同科技有限公司 | A kind of hub motor experimental rig |
| CN114526897B (en) * | 2022-01-25 | 2023-07-11 | 江苏理工学院 | Dynamic and static loading comprehensive test bed for shock absorption damper |
| CN114459780A (en) * | 2022-02-07 | 2022-05-10 | 山东理工大学 | Experiment table execution device for testing/simulating distributed active steering characteristics of automobile |
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