CN107192561B - Test bed for electric wheel suspension system of hub-driven electric automobile - Google Patents
Test bed for electric wheel suspension system of hub-driven electric automobile Download PDFInfo
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- CN107192561B CN107192561B CN201710451112.2A CN201710451112A CN107192561B CN 107192561 B CN107192561 B CN 107192561B CN 201710451112 A CN201710451112 A CN 201710451112A CN 107192561 B CN107192561 B CN 107192561B
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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
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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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
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/04—Suspension or damping
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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
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
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Abstract
The invention provides a wheel hub driving electric automobile electric wheel suspension system test bed which comprises a fixed base and a main frame, wherein the fixed base is arranged at the lower end of the main frame, a suspension device, electric wheels and a roller device are arranged on the main frame, the suspension device is composed of an upper swing arm, a claw and a lower swing arm, one end of the upper swing arm is connected through a hinge block above the main frame, the other end of the upper swing arm is hinged with the claw, the lower end of the claw is connected with one end of the lower swing arm through a ball head, the other end of the lower swing arm is hinged with a fixed block on the main frame, the electric wheels are arranged at the right end of the claw, and the roller device is arranged below the electric wheels through a roller support frame. The integral electric wheel structure is not provided with a mechanical transmission mechanism, so that the structure is compact and the transmission efficiency is high; for the motion test of the electric automobile under the actual operation condition, the vertical load simulation mechanism can simulate the changes of the load, the torque and the rotating speed of the electric wheel under the actual operation condition. The test bed can carry out electronic differential test and braking test of electric wheel.
Description
Technical Field
The invention relates to the field of electric automobiles, in particular to a test bed for a suspension system of an electric wheel of a hub driving electric automobile.
Background
The energy shortage and the environmental pollution in the 21 st century are two major problems to be solved. Electric vehicles have irreplaceable advantages in solving these two problems. The electric vehicle (BEV) is a vehicle which takes a vehicle-mounted power supply as power and drives wheels by a motor, and meets various requirements of road traffic and safety regulations. The automobile has a small influence on the environment, so that the prospect is widely seen, but the current technology is not mature. At present, a dynamic loading test platform for electric wheels mainly focuses on performance test of an independent component, namely a hub motor in the electric wheels, and cannot completely reflect the performance of a 1/4 vehicle body electric wheel system, so that the measurement accuracy of the electric wheels is insufficient, and the research and development efficiency of electric vehicles is influenced.
Disclosure of Invention
The invention designs a novel electric automobile electric wheel-suspension vibration detection test platform based on the actual requirements of development and test of a hub-driven electric automobile electric wheel suspension system.
The invention provides a vibration detection test platform for an electric wheel suspension system of a hub-driven electric automobile, which comprises a main frame, wherein a spiral transmission fixing frame and a double-fork-arm suspension are arranged on the main frame; a vertical load loading device applied to the suspension module is installed at the top of the spiral transmission fixing frame; a complete electric wheel module is arranged on one side of the double-fork arm suspension, and comprises a horn, a brake disc, a hub motor, a rim and a tire; an excitation system for generating an excitation signal is fixed at the bottom of the main rack, and comprises an excitation source variable frequency motor and an amplitude adjusting device; the upper part of the excitation system is provided with a roller device for simulating a road surface, and the road surface simulating roller device comprises a roller shaft, a web, a flange and a roller skin; the spiral transmission fixing frame is fixedly connected to the main frame through bolts, and the double-fork-arm suspension device is hinged to the frame; the excitation system is fixedly connected to the chassis bracket through bolts.
The further improvement lies in that: the vertical load loading device consists of a rocking handle, a spiral transmission rod and a spiral nut; the rocking handle and the spiral transmission rod are fixedly connected in a key interference manner; the spiral nut is fixed with the spiral transmission fixing frame through a circle of peripheral bolts; the screw transmission rod is meshed with the screw nut through teeth to realize displacement feeding in the vertical direction.
The further improvement lies in that: the structure of bumper shock absorber does: the spring is compressed by the upper end cover and the lower end cover in a certain stroke, and the damper is fixed with the upper end cover and the lower end cover in a fixedly connected mode.
The further improvement lies in that: the suspension module consists of an upper swing arm, a claw and a lower swing arm; one end of the upper swing arm is connected through a hinge block above the main frame, and the other end of the upper swing arm is hinged with the goat horn; the lower end of the claw is connected with one end of the lower swing arm through the ball head, and the other end of the lower swing arm is hinged with a fixed block of the main frame.
The further improvement lies in that: the road surface simulation device consists of a roller shaft, a flange, a web plate and a roller skin; the roller shaft and the flange are fixed in a key interference manner; the flange and the amplitude plate are fixedly connected in a welding mode; the fixed connection between the web and the cylinder skin is realized by welding.
In order to reduce the weight of the structure of the pavement simulating device, four round holes are required to be formed in each web as the basis for weight lightening, and the diameter of each round hole is displayed to be phi 15cm according to a finite element analysis result.
The further improvement lies in that: the excitation system consists of an excitation source variable frequency motor, a coupler and an amplitude adjusting device; the amplitude adjusting device consists of an excitation disc, a transverse pull rod, a longitudinal push rod, a connecting disc and bolts and nuts; the excitation source variable frequency motor is connected with the fixed base fixing device through an embedded bolt; one end of the coupler is connected with the rotating shaft of the variable frequency motor in a key interference mode, and the other end of the coupler is connected with the amplitude adjusting device in a key interference mode.
The further improvement lies in that: the roller support frame is composed of a longitudinal cylindrical guide pillar, an upper sleeve, a lower sleeve and a sleeve transition support sleeve; the longitudinal cylindrical guide pillar is arranged on the fixing base with the hole; the upper sleeve is arranged on the longitudinal cylindrical guide rail through a central circular hole, and one side of the upper sleeve is provided with a side hole for installing a roller shaft; the lower sleeve is arranged on the longitudinal cylindrical guide rail through a central circular hole, and one side of the lower sleeve is provided with a side hole for fixing the transverse pull rod; the transition support sleeve is arranged on the longitudinal cylindrical guide rail through a central circular hole, the upper end of the transition support sleeve is fixed with the lower end of the upper sleeve in a welding mode, and the lower end of the transition sleeve is fixed with the upper end of the lower sleeve in a welding mode; the other end is fixedly connected by welding and an amplitude adjusting device. Thereby realizing the motion coordination of the whole vibration system.
The further improvement lies in that: and a pressure sensor is arranged between the vertical load loading device and the shock absorber, one end of the pressure sensor is fixedly connected with the spiral transmission rod by utilizing the principle of tooth meshing, and the other end of the pressure sensor is tightly matched with the shock absorber by utilizing a bolt.
The further improvement lies in that: and a displacement sensor is arranged at the ball head of the lower swing arm of the double fork arm, and the bottom end of the displacement sensor can be fixed on the lower swing arm by using liquid glue.
The beneficial effects of the invention are: the hub motor and the wheels are integrated into a whole, so that the wheel hub motor is suitable for two-wheel or four-wheel independent drive electric automobiles, and the whole electric wheel structure has no mechanical transmission mechanism in the middle, so that the wheel hub motor has the advantages of compact structure, high transmission efficiency and the like; besides the durability test of the electric wheels, the platform can also be used for testing the motion of the electric automobile under the actual operation condition, and on the platform, the vertical load simulation mechanism can simulate the changes of the load, the torque and the rotating speed of the electric wheels under the actual operation condition, and can be used for carrying out an electronic differential test, a braking test and the like of the electric wheels; the excitation system can simulate road surface unevenness under different working conditions, can accomplish electric automobile's research and development through the buildding to 1/4 electronic round of suspension system test bench and provide technical support and reduce the input of fund, accelerates to launch the critical effect to electric automobile.
Drawings
Fig. 1 is a front view of the structure of the present invention.
Fig. 2 is a left side view of the structure of the present invention.
Fig. 3 is a schematic structural diagram of the vertical loading device of the present invention.
Fig. 4 is a schematic structural diagram of the amplitude adjustment device of the present invention.
Wherein: 1-a fixed base, 2-a main frame, 3-electric wheels, 4-a roller device, 5-an upper swing arm, 6-a goat's horn, 7-a lower swing arm, 8-a hinged block, 9-a fixed block, 10-a roller support frame, 11-a longitudinal cylindrical guide column, 12-an upper sleeve, 13-a lower sleeve, 14-a sleeve transition support sleeve, 15-a spiral transmission rod, 16-a spiral nut, 17-a rocking handle, 18-a spiral transmission fixing frame, 19-an excitation source variable frequency motor, 20-a coupler, 21-an amplitude adjusting device, 22-a brake disc, 23-an excitation disc, 24-a transverse pull rod, 25-a longitudinal push rod, 26-a connecting disc, 27-a shock absorber and 28-a pressure sensor.
Detailed Description
For the purpose of enhancing understanding of the present invention, the present invention will be described in further detail with reference to examples, which are provided for illustration only and are not intended to limit the scope of the present invention.
As shown in fig. 1-4, this embodiment provides a wheel hub drive electric vehicle electric wheel suspension system test stand, including unable adjustment base 1 and total frame 2, unable adjustment base 1 sets up at total frame 2 lower extreme, be provided with suspension device, electric wheel 3 and be used for simulating the cylinder device 4 on the road surface on total frame 2, suspension device comprises last swing arm 5, goat's horn 6 and lower swing arm 7, the one end of going up swing arm 5 realizes connecting through articulated piece 8 above total frame 2, and the other end is articulated with goat's horn 6, the lower extreme of goat's horn 6 is connected with the one end of lower swing arm 7 through the bulb, and the other end of lower swing arm 7 realizes articulating with fixed block 9 on total frame 2, electric wheel 3 sets up the right-hand member at goat's horn 6, cylinder device 4 sets up below electric wheel 3 through cylinder support frame 10.
The roller support frame 10 is composed of a longitudinal cylindrical guide pillar 11, an upper sleeve 12, a lower sleeve 13 and a sleeve transition support sleeve 14, wherein the longitudinal cylindrical guide pillar 11 is installed on the fixing base 1 with the hole; an upper sleeve 12 is arranged on the longitudinal cylindrical guide post 11 through a central circular hole, and one side of the upper sleeve 12 is provided with a side hole for mounting a roller shaft; the lower sleeve 13 is installed on the longitudinal cylindrical guide post 11 through a central circular hole, a side hole is formed in one side of the lower sleeve (13), the sleeve transition support sleeve 14 is installed on the longitudinal cylindrical guide post 11 through the central circular hole, the upper end of the sleeve transition support sleeve 14 is fixed with the lower end of the upper sleeve 12 in a welding mode, and the lower end of the sleeve transition support sleeve 14 is fixed with the upper end of the lower sleeve 13 in a welding mode.
The suspension device is provided with a vertical loading device, the vertical loading device comprises a spiral transmission rod 15, a spiral nut 16, a rocking handle 17 and a spiral transmission fixing frame 18, the rocking handle 17 is fixedly connected with the spiral transmission rod 15 in a key interference mode, and the spiral nut 16 is fixed with the spiral transmission fixing frame 18 through peripheral bolts; the helical drive rod 15 is fed in a vertical displacement by means of a toothed engagement with a helical nut 16.
The vibration excitation system device is arranged below the roller device 4 and used for generating different vibration excitation frequencies and amplitudes, the vibration excitation system device comprises an excitation source variable frequency motor 19, a coupler 20 and an amplitude adjusting device 21, the excitation source variable frequency motor 19 is connected with a fixing device of the fixing base 1 through an embedded bolt, one end of the coupler 20 is connected with a rotating shaft of the excitation source variable frequency motor 19 in a key interference mode, and the other end of the coupler 20 is connected with the amplitude adjusting device 21 in a key interference mode.
A brake disc 22 is arranged between the electric wheel 3 and the claw 6, and the speed of the electric wheel 3 is controlled through the brake disc 22.
The lower end of the vertical loading device is provided with a shock absorber 27, and a pressure sensor 28 is arranged between the vertical loading device and the shock absorber 27.
Claims (4)
1. The utility model provides an electronic round of suspension system test bench of wheel hub drive electric automobile, includes unable adjustment base (1) and head frame (2), unable adjustment base (1) sets up at head frame (2) lower extreme, its characterized in that: the road surface simulation device is characterized in that a suspension device, electric wheels (3) and a roller device (4) used for simulating a road surface are arranged on the main frame (2), the suspension device is composed of an upper swing arm (5), a goat's horn (6) and a lower swing arm (7), one end of the upper swing arm (5) is connected through a hinge block (8) above the main frame (2), the other end of the upper swing arm is hinged with the goat's horn (6), the lower end of the goat's horn (6) is connected with one end of the lower swing arm (7) through a ball head, the other end of the lower swing arm (7) is hinged with a fixed block (9) on the main frame (2), the electric wheels (3) are arranged at the right end of the goat's horn (6), and the roller device (4) is arranged below the electric wheels (3) through a roller support frame (10); the roller support frame (10) is composed of a longitudinal cylindrical guide pillar (11), an upper sleeve (12), a lower sleeve (13) and a sleeve transition support sleeve (14), and the longitudinal cylindrical guide pillar (11) is installed on the fixing base (1) with the hole; an upper sleeve (12) is arranged on the longitudinal cylindrical guide post (11) through a central circular hole, and one side of the upper sleeve (12) is provided with a side hole for mounting a roller shaft; the lower sleeve (13) is arranged on the longitudinal cylindrical guide post (11) through a central circular hole, and a side hole is formed in one side of the lower sleeve (13); the sleeve transition support sleeve (14) is arranged on the longitudinal cylindrical guide post (11) through a central circular hole, the upper end of the sleeve transition support sleeve (14) is fixed with the lower end of the upper sleeve (12) in a welding mode, and the lower end of the sleeve transition support sleeve (14) is fixed with the upper end of the lower sleeve (13) in a welding mode; the suspension device is provided with a vertical loading device, the vertical loading device comprises a spiral transmission rod (15), a spiral nut (16), a rocking handle (17) and a spiral transmission fixing frame (18), the rocking handle (17) is fixedly connected with the spiral transmission rod (15) in a key interference manner, and the spiral nut (16) is fixed with the spiral transmission fixing frame (18) through a peripheral bolt; the screw transmission rod (15) and the screw nut (16) are engaged through teeth to realize displacement feeding in the vertical direction; the vibration excitation system device is characterized in that a vibration excitation system device used for generating different vibration excitation frequencies and amplitudes is arranged below the roller device (4), the vibration excitation system device comprises an excitation source variable frequency motor (19), a coupler (20) and an amplitude adjusting device (21), the excitation source variable frequency motor (19) is connected with a fixing device of the fixing base (1) through an embedded bolt, one end of the coupler (20) is connected with a rotating shaft of the excitation source variable frequency motor (19) in a key interference mode, and the other end of the coupler is connected with the amplitude adjusting device (21) in a key interference mode.
2. The test bed for the suspension system of the electric wheel of the hub-driven electric automobile according to claim 1, characterized in that: a brake disc (22) is arranged between the electric wheel (3) and the claw (6), and the speed of the electric wheel (3) is controlled through the brake disc (22).
3. The test bed for the suspension system of the electric wheel of the hub-driven electric automobile according to claim 1, characterized in that: amplitude adjusting device (21) comprises excitation disc (23), drag link (24), indulges push rod (25) and connection disc (26), drag link (24) set up under on sleeve (13), indulge push rod (25) and set up the middle part at drag link (24), excitation disc (23) set up and indulge push rod (25) front end, connection disc (26) set up on excitation disc (23), drag link (24) are installed under on the side opening of sleeve (13).
4. The test bed for the suspension system of the electric wheel of the hub-driven electric automobile according to claim 1, characterized in that: the lower end of the vertical loading device is provided with a shock absorber (27), and a pressure sensor (28) is arranged between the vertical loading device and the shock absorber (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710451112.2A CN107192561B (en) | 2017-06-15 | 2017-06-15 | Test bed for electric wheel suspension system of hub-driven electric automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710451112.2A CN107192561B (en) | 2017-06-15 | 2017-06-15 | Test bed for electric wheel suspension system of hub-driven electric automobile |
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| CN107192561A CN107192561A (en) | 2017-09-22 |
| CN107192561B true CN107192561B (en) | 2023-04-07 |
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| CN109263423B (en) * | 2018-10-25 | 2021-12-07 | 北京航天发射技术研究所 | Independent suspension guide mechanism and test device and method thereof |
| GB2582642B (en) * | 2019-03-29 | 2021-06-16 | Protean Electric Ltd | A double wishbone suspension system for an in-wheel electric motor |
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| CN113281057B (en) * | 2021-04-30 | 2022-02-15 | 西南交通大学 | Dynamic performance test platform for electric wheel and suspension system |
| CN113593393B (en) * | 2021-07-31 | 2023-03-31 | 北京智扬北方国际教育科技有限公司 | Damping-adjustable automobile spring multipath condition simulation device |
| CN114705459B (en) * | 2022-06-01 | 2022-09-09 | 山东美晨工业集团有限公司 | Chassis suspension vibration detection device |
| CN117686240B (en) * | 2024-02-04 | 2024-04-26 | 山东科技大学 | Hub electric wheel test bed capable of simulating multi-path surface working conditions and test method |
| CN118583489B (en) * | 2024-08-07 | 2024-10-15 | 湖南工程学院 | New energy automobile reduction gear vibration noise testing arrangement |
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