CN113607431A - Rotary hub following system and automobile chassis dynamometer with same - Google Patents
Rotary hub following system and automobile chassis dynamometer with same Download PDFInfo
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- CN113607431A CN113607431A CN202110944501.5A CN202110944501A CN113607431A CN 113607431 A CN113607431 A CN 113607431A CN 202110944501 A CN202110944501 A CN 202110944501A CN 113607431 A CN113607431 A CN 113607431A
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- hub
- support
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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
- G01M17/0072—Wheeled or endless-tracked vehicles the wheels of the vehicle co-operating with rotatable rolls
- G01M17/0074—Details, e.g. roller construction, vehicle restraining devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/24—Devices for determining the value of power, e.g. by measuring and simultaneously multiplying the values of torque and revolutions per unit of time, by multiplying the values of tractive or propulsive force and velocity
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- General Physics & Mathematics (AREA)
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- Combustion & Propulsion (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to the technical field of automobile chassis testing. In order to meet the test requirement of an automobile chassis under a steering driving condition, the invention provides a hub following system which comprises two hub following devices which are oppositely arranged, wherein in the hub following devices, a loading mechanism comprises a driving motor, a driving hub and a driven hub which are arranged on a loading base, and the driving hub and the driven hub are parallel and rotate under the driving of the driving motor; in the wheel deviation detection mechanism, a bracket is fixedly arranged on a loading base, and distance measuring sensors are arranged on the bracket at intervals to detect the deviation angle of a wheel to be detected; in the swing mechanism, a support is positioned below a loading base to support the loading base, and a swing arm is connected with the loading base and a swing electric cylinder and drives the loading base to swing left and right on the support under the driving of the swing electric cylinder. The rotating hub following system can simulate the steering driving condition of the wheel to be tested and test the automobile chassis under the steering driving condition.
Description
Technical Field
The invention relates to the technical field of automobile chassis testing, in particular to a hub following system and an automobile chassis dynamometer provided with the hub following system.
Background
At present, a commonly used automobile chassis dynamometer can only test an automobile chassis under a straight driving working condition, but cannot test the automobile chassis under a steering driving working condition.
Disclosure of Invention
In order to meet the test requirement of an automobile chassis under a steering driving condition, the invention provides a hub following system, which comprises two hub following devices which are oppositely arranged, wherein each hub following device comprises a loading mechanism, a swinging mechanism and a wheel deviation detection mechanism, the loading mechanism comprises a loading base, a driving motor, a driving hub and a driven hub, the driving motor, the driving hub and the driven hub are arranged on the loading base, and the driving hub is parallel to the driven hub and drives the driven hub to rotate under the driving of the driving motor;
the wheel deviation detection mechanism comprises a support and two distance measurement sensors, the support is fixedly arranged on the loading base, and the distance measurement sensors are arranged on the support at intervals and used for detecting the deviation angle of the wheel to be detected;
the swing mechanism comprises a support, a swing arm and a swing electric cylinder, the support is located below the loading base and supports the loading base, and the swing arm is connected with the loading base and the swing electric cylinder and drives the loading base to swing left and right on the support under the driving of the swing electric cylinder.
When the hub following system works, the loading mechanism drives the driving hub and the driven hub to rotate through the driving motor, so as to drive the wheel to be tested to rotate and simulate the running condition of the wheel to be tested; the wheel deviation detection mechanism detects the deviation angle of the wheel to be detected through the distance difference measured by the two distance measuring sensors; the swing mechanism drives the loading mechanism to steer along with the wheel to be tested through the swing electric cylinder and the swing arm, and controls the swing deflection angle of the swing mechanism according to the deflection angle of the wheel to be tested, which is measured by the wheel deflection detection mechanism, so that the deflection angle of the loading mechanism is consistent with the deflection angle of the wheel to be tested, and the test of the automobile chassis under the steering driving condition is completed. Therefore, the rotating hub following system can simulate the steering driving condition of the wheel to be tested, so that the automobile chassis under the steering driving condition can be tested.
Preferably, the bottom of the loading base is provided with a connecting column, and the positioning end of the swing arm is sleeved on the connecting column. Therefore, when the swing mechanism drives the loading mechanism to turn through the swing arm, the loading base can be driven to rotate around the central axis of the connecting column through the swing arm, the swing arm can conveniently drive the loading base to rotate, the contact surface between the swing arm and the loading base can be reduced, and therefore energy consumption required by swing is reduced.
Preferably, the swing mechanism further comprises a support base plate, the support base plate is fixed to the bottom of the support and parallel to the loading base, and the swing electric cylinder is fixed to the support base plate. Therefore, the loading mechanism and the swinging mechanism are convenient to assemble, the swinging electric cylinder in the swinging mechanism is convenient to fix, and the steering angle of the swinging electric cylinder driving the loading mechanism through the swinging arm is convenient to control. Furthermore, the bottom of the loading base is provided with a steering wheel, and two ends of the support base plate are provided with arc-shaped guide grooves for accommodating the steering wheel. Therefore, the loading base can be supported by the matching of the steering wheel and the support in the swing mechanism, the stability of the loading base is kept, and the loading base can be controlled to rotate by the matching of the steering wheel and the arc-shaped guide groove, so that the situation that the deflection angle of the loading mechanism is influenced by the dislocation of the loading base in the rotating process is avoided.
Preferably, the support includes montant and horizontal pole, the montant is vertical to be installed and fixed on the loading base, the horizontal pole is in the upper portion of montant with the montant is perpendicular to be connected, just the central axis of horizontal pole with the central axis of initiative hub and driven hub is perpendicular. The bracket is simple in structure, convenient to manufacture and low in cost.
Preferably, the loading mechanism includes a support member sandwiched between the driving hub and the driven hub and including a support top plate, a support base, and two support columns, the support top plate is located above the support base and parallel to the loading base, and the support columns are located on both sides of the support base and vertically connected to the support top plate. In this way, the supporting piece is arranged between the driving rotating hub and the driven rotating hub, the wheel to be tested can be supported by the supporting piece, the pressure applied to the driving rotating hub and the driven rotating hub by the wheel to be tested is reduced, the abrasion of the driving rotating hub and the driven rotating hub can be reduced, and the service life of the rotating hub following system is prolonged. Furthermore, a lifting cylinder is arranged on the supporting seat, and the supporting top plate is vertically connected with a telescopic shaft of the lifting cylinder; the supporting column comprises a sliding barrel and a sliding rod, the sliding barrel is fixedly arranged on the loading base, and the lower end of the sliding rod is inserted into the sliding barrel and can slide in the sliding barrel. Therefore, in the using process, the height of the supporting top plate can be adjusted according to needs, the use is convenient, and the application range of the rotary hub following system is expanded.
Preferably, the hub following device comprises a translation mechanism, the translation mechanism comprises a linear slide rail and a translation driving element, the linear slide rail is fixed below the support base plate, and the extension direction of the linear slide rail is perpendicular to the central axis of the driving hub and the driven hub when the driving hub and the driven hub are not deflected; the translation driving part is located below the support base plate, and a driving rod of the translation driving part is connected with the support base plate and drives the support base plate to slide on the linear slide rail. Therefore, in the using process, the loading mechanism, the wheel deviation detection mechanism and the swing mechanism which are positioned on the support base plate can be driven to move back and forth by the translation driving piece in the translation mechanism, so that the wheel to be detected is always in a proper position, and the detection is convenient.
Preferably, the hub following device comprises a braking mechanism, the braking mechanism is fixedly arranged on the loading base, and a braking clamp is arranged in the braking mechanism; and a brake disc is arranged on a rotating shaft of the driving rotating hub and is inserted into a clamping opening of the brake clamp. Like this, after the detection is accomplished, usable arrestment mechanism brakes the initiative hub that changes, can realize quick braking to can improve detection efficiency.
In addition, the invention also provides an automobile chassis dynamometer, which comprises any one of the rotating hub following systems, and the two rotating hub following systems are fixedly arranged on the test base. The automobile chassis dynamometer can test an automobile chassis under a straight driving working condition and can also test the automobile chassis under a steering driving working condition, the application range of the automobile chassis dynamometer is effectively expanded, the testing efficiency of the automobile chassis dynamometer can be effectively improved, and the testing cost of the automobile chassis is reduced.
Drawings
FIG. 1 is a schematic structural view of a hub follower system of the present invention in use;
FIG. 2 is a schematic sectional view A-A of FIG. 1;
FIG. 3 is a schematic sectional view of the structure of B-B in FIG. 1;
fig. 4 is a schematic sectional structure view of C-C in fig. 1.
Detailed Description
The following describes the hub following system and the chassis dynamometer of the vehicle equipped with the same in detail with reference to fig. 1 to 4.
As shown in fig. 1 and 2, the hub following system of the present invention includes two hub following devices disposed opposite to each other, and the hub following devices include a loading mechanism, a swinging mechanism, a wheel deflection detecting mechanism translation mechanism, and a braking mechanism. The loading mechanism comprises a loading base 11, a driving motor 12, a driving rotating hub 13 and a driven rotating hub 14, the driving motor 12, the driving rotating hub 13 and the driven rotating hub 14 are installed on the loading base 11, the central axis of the driving rotating hub 13 is parallel to the central axis of the driven rotating hub, and the driving rotating hub 13 is located between the driven rotating hub 14 and the driving motor 12 and drives the driven rotating hub 14 to rotate under the driving of the driving motor 12. Preferably, loading side plates 111 are provided at both sides of the loading base 11 to facilitate installation of the driving hub 13 and the driven hub 14. Preferably, the rotating shaft of the driving rotary hub 13 is connected with the driving shaft of the driving motor 12 through a driving belt 15, and is connected with the rotating shaft of the driven rotary hub 14 through a driven driving belt 16, and the connection is simple and convenient. Preferably, the loading side plate 111 is provided with a buffer roller 17, and the buffer roller 17 is located below a connecting line between the rotating shaft of the driving hub 13 and the rotating shaft of the driven hub 14 and is pressed against the driven driving belt 16. Therefore, the tightness of the driven driving belt 16 can be adjusted by the buffer roller 17, and the test and the use are convenient. Preferably, the loading mechanism includes a support member interposed between the driving hub 13 and the driven hub 14 and including a supporting top plate 181, a supporting seat 182, and two supporting columns 183, the supporting top plate 181 being located above the supporting seat 182 and being parallel to the loading base 11, the supporting columns 183 being located at both sides of the supporting seat 182 and being vertically connected to the supporting top plate 181. In this way, a support member is arranged between the driving rotary hub 13 and the driven rotary hub 14, the support member can be used for supporting the wheel 01 to be tested, the pressure applied to the driving rotary hub 13 and the driven rotary hub 14 by the wheel 01 to be tested is reduced, the abrasion of the driving rotary hub 13 and the driven rotary hub 14 can be reduced, and the service life of the rotary hub following system can be prolonged. Preferably, the supporting base 182 is provided with a lifting cylinder 184, and the supporting top plate 181 is vertically connected with a telescopic shaft of the lifting cylinder 184; the supporting column 183 includes a sliding barrel 1831 and a sliding bar 1832, the sliding barrel 1831 is fixed on the loading base 11, and the lower end of the sliding bar 1832 is inserted into the sliding barrel 1831 and can slide in the sliding barrel 1831. Therefore, in the using process, the height of the supporting top plate 181 can be adjusted according to the requirements, the use is convenient, and the application range of the hub following system is expanded.
As shown in fig. 1 and 2, the wheel deviation detecting mechanism includes a bracket 21 and two distance measuring sensors 22, the bracket 21 is fixed on the loading base 11, and the distance measuring sensors 22 are installed on the bracket 21 at intervals to detect the deviation angle of the wheel to be detected. Preferably, the support 21 comprises a vertical rod 211 and a cross rod 212, the vertical rod 211 is vertically installed and fixed on the loading side plate 111 of the loading base 11, the cross rod 212 is vertically connected with the vertical rod 211 at the upper part of the vertical rod 211, and the central axis of the cross rod 211 is perpendicular to the central axis of the driving hub 13 and the central axis of the driven hub 14. The bracket 21 has simple structure, convenient manufacture and low cost. Preferably, the ranging sensor 22 is a laser ranging sensor mounted on the cross bar 212 near the end of the cross bar 212.
As shown in fig. 1-4, the swing mechanism includes a support 31, a swing arm 32 and a swing electric cylinder 33, the support 31 is located below the loading base 11 to support the loading base 11, a positioning end of the swing arm 32 is connected to the loading base 11 at the bottom of the loading base 11, and a connecting end of the swing arm 32 is connected to the swing electric cylinder 33 and drives the loading base 11 to swing on the support 31 under the driving of the swing electric cylinder 33. Preferably, the connecting end of the swing arm 32 is connected with the driving rod of the swing electric cylinder 33 through a hinge 34, so that the swing electric cylinder 33 forms a crank connection with the loading mechanism through the swing arm 32, and the swing electric cylinder 33 drives the loading mechanism to swing left and right through the swing arm 32. Preferably, the swing mechanism further comprises a support base plate 35, the support base plate 35 is fixed at the bottom of the support 31 and is parallel to the loading base 11, and the swing electric cylinder 33 is fixedly installed on the support base plate 35. Therefore, the loading mechanism and the swing mechanism are conveniently assembled, the swing electric cylinder 33 in the swing mechanism is conveniently fixed, and the steering angle of the loading mechanism driven by the swing arm 32 through the swing electric cylinder 33 is conveniently controlled. Preferably, the bottom of the loading base 11 is provided with a connecting column 112, and the positioning end of the swing arm 32 is sleeved on the connecting column 112. Thus, when the swing mechanism drives the loading mechanism to turn through the swing arm 32, the loading base 11 can be driven to rotate around the central axis of the connecting column 112 through the swing arm 32, so that the swing arm 32 can conveniently drive the loading base 11 to rotate, the contact surface between the swing arm 32 and the loading base 11 can be reduced, and the energy consumption required by swing is reduced. Preferably, the loading base 11 is provided at the bottom thereof with a steering wheel 19, and the holder base plate 35 is provided at both ends thereof with arc-shaped guide grooves 351 for receiving the steering wheel 19. Therefore, the loading base 11 can be supported by the cooperation of the steering wheel 19 and the support 31 in the swing mechanism, the stability of the loading base 11 is kept, and the rotation of the loading base 11 can be controlled by the cooperation of the steering wheel 19 and the arc-shaped guide groove 351, so that the situation that the deflection angle of the loading mechanism is influenced by dislocation of the loading base 11 in the rotation process is avoided. Preferably, the arcuate guide channel 351 is disposed on top of an arcuate guide rail (not shown) that is mounted and fixed to the carriage bottom plate 35.
As shown in fig. 1-4, the translation mechanism includes a linear slide rail 41 and a translation driving member, the linear slide rail 41 is fixed below the support base plate 35, and the extension direction of the linear slide rail 41 is perpendicular to the central axis of the driving hub 13 and the driven hub 14 when they are not deflected; the translation driving member is located below the support base plate 34, and the translation driving member is connected with the support base plate 34 and drives the support base plate 34 to slide on the linear slide rail 41. Therefore, in the using process, the loading mechanism, the wheel deviation detection mechanism and the swing mechanism which are positioned on the support base plate 35 can be driven to move back and forth by the translation driving piece in the translation mechanism, so that the wheel to be detected is always in a proper position, and the detection is convenient. Preferably, the linear guide 41 includes a guide seat 411 and a sliding block 412, the guide seat 411 is installed and fixed below the support base plate 35, the sliding block 412 is installed and fixed at the bottom of the support base plate 35, and the slot on the sliding block 412 is clamped on the guide rail at the top of the guide seat 411. Such a linear guide 41 has a simple structure, is easy to assemble, and is low in cost. Preferably, the translational driving member comprises a servo motor 421 and a ball screw 422, and the servo motor 421 is connected with the support base plate 35 through the ball screw 422, so that the connection is convenient and the control is convenient.
As shown in fig. 1-3, the braking mechanism includes a braking clip 51 and a connecting block 52, and the braking mechanism is fixed on the loading base through the connecting block 52; a brake disc 131 is disposed on the rotating shaft of the driving hub 13, and the brake disc 131 is inserted into the clamping opening of the brake clamp 51. Therefore, after detection is finished, the active rotary hub 13 can be braked by the braking mechanism, rapid braking can be realized, and the detection efficiency can be improved.
When the hub following system works, the loading mechanism drives the driving hub 13 and the driven hub 14 to rotate through the driving motor 12, so as to drive the wheel 01 to be tested to rotate and simulate the running condition of the wheel 01 to be tested; the wheel deviation detection mechanism detects the deviation angle of the wheel 01 to be detected through the distance difference measured by the two distance measuring sensors 22; the swing mechanism drives the loading mechanism to steer along with the wheel 01 to be tested through the swing electric cylinder 33 and the swing arm 32, and controls the swing deflection angle of the swing mechanism according to the deflection angle of the wheel 01 to be tested, which is measured by the wheel deflection detection mechanism, so that the deflection angle of the loading mechanism is consistent with the deflection angle of the wheel 01 to be tested, and the test of the automobile chassis under the steering driving condition is completed. Therefore, the rotating hub following system can simulate the steering driving condition of the wheel to be tested, so that the automobile chassis under the steering driving condition can be tested.
When the hub following system is installed on an automobile chassis dynamometer, the hub following system can be installed and fixed on the test base 6 so as to be conveniently inserted with the hub following system. When the automobile chassis dynamometer is used for testing an automobile chassis under a straight line running working condition, the wheel 01 to be tested is enabled to be deflected at 0 degree. When the automobile chassis dynamometer is used for testing an automobile chassis under a steering working condition, the deflection angle of a wheel 01 to be tested is detected through a wheel deflection detection mechanism; and then, controlling a swinging electric cylinder 33 in the swinging mechanism according to the deflection angle of the wheel 01 to be tested detected by the wheel deflection detection mechanism, so that the swinging electric cylinder 33 drives a loading base 11 in the loading mechanism to swing left and right through a swinging arm 32 to steer, and the deflection angle of the loading mechanism is consistent with the deflection angle of the wheel 01 to be tested, thereby completing the test of the automobile chassis under the steering driving condition. In addition, when the rotation center of the loading mechanism is not coincident with the swing center of the wheel to be tested, after the loading mechanism deflects along with the wheel to be tested, the wheel to be tested deviates from the testing position on the loading mechanism, so that the testing is influenced, and therefore the support base plate can be driven by the translation mechanism to move back and forth along the linear slide rail, so that the rotation center of the loading mechanism is coincident with the swing center of the wheel to be tested.
Therefore, the automobile chassis dynamometer can test an automobile chassis under a straight driving working condition and can test the automobile chassis under a steering driving working condition, the application range of the automobile chassis dynamometer is effectively expanded, the testing efficiency of the automobile chassis dynamometer can be effectively improved, and the testing cost of the automobile chassis is reduced.
Claims (10)
1. A hub following system is characterized by comprising two hub following devices which are oppositely arranged, wherein each hub following device comprises a loading mechanism, a wheel deflection detection mechanism and a swinging mechanism, the loading mechanism comprises a loading base, a driving motor, a driving hub and a driven hub, the driving motor, the driving hub and the driven hub are arranged on the loading base, and the driving hub and the driven hub are parallel and drive the driven hub to rotate under the drive of the driving motor;
the wheel deflection detection mechanism comprises a support and two distance measurement sensors, the support is fixedly arranged on the loading base, and the distance measurement sensors are arranged on the support at intervals to detect the deflection angle of the wheel to be detected;
the swing mechanism comprises a support, a swing arm and a swing electric cylinder, the support is located below the loading base and supports the loading base, and the swing arm is connected with the loading base and the swing electric cylinder and drives the loading base to swing left and right on the support under the driving of the swing electric cylinder.
2. The hub following system according to claim 1, wherein the bottom of the loading base is provided with a connecting column, and the positioning end of the swing arm is sleeved on the connecting column.
3. The hub follower system of claim 2 wherein the swing mechanism further comprises a support base plate secured to the bottom of the support and parallel to the loading base, and wherein the swing electric cylinder is mounted and secured to the support base plate.
4. The hub follower system of claim 3 wherein the bottom of the loading base is provided with a steering wheel and the two ends of the support base are provided with arcuate guide slots for receiving the steering wheel.
5. A hub following system according to any of claims 1-4, wherein the support comprises a vertical rod and a cross rod, the vertical rod is vertically mounted and fixed on the loading base, the cross rod is vertically connected with the vertical rod on the upper part of the vertical rod, and the central axis of the cross rod is perpendicular to the central axes of the driving hub and the driven hub.
6. A hub follower system as defined in any of claims 1-4 wherein said loading mechanism includes a support sandwiched between said driving hub and said driven hub and including a top support plate, a support base and two support posts, said top support plate being positioned above said support base and parallel to said loading base, said support posts being positioned on either side of said support base and perpendicularly connected to said top support plate.
7. The hub follower system of claim 6 wherein the support base is provided with a lift cylinder and the top support plate is vertically connected to a telescoping shaft of the lift cylinder; the supporting column comprises a sliding barrel and a sliding rod, the sliding barrel is fixedly arranged on the loading base, and the lower end of the sliding rod is inserted into the sliding barrel and can slide in the sliding barrel.
8. A hub follower system according to claim 3 or 4, wherein the hub follower device comprises a translation mechanism comprising a linear slide and a translation drive member, the linear slide being fixed below the support base plate and extending in a direction perpendicular to the central axis of the driving hub and the driven hub when not deflected; the translation driving part is located below the support base plate, and a driving rod of the translation driving part is connected with the support base plate and drives the support base plate to slide on the linear slide rail.
9. A hub following system according to any one of claims 1-4, wherein the hub following device comprises a brake mechanism, the brake mechanism is fixedly mounted on the loading base, and a brake clip is arranged in the brake mechanism; and a brake disc is arranged on a rotating shaft of the driving rotating hub and is inserted into a clamping opening of the brake clamp.
10. An automotive chassis dynamometer, characterized in that it includes a hub follower system according to any of claims 1-9, and the hub follower system is mounted on a test base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110944501.5A CN113607431A (en) | 2021-08-17 | 2021-08-17 | Rotary hub following system and automobile chassis dynamometer with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110944501.5A CN113607431A (en) | 2021-08-17 | 2021-08-17 | Rotary hub following system and automobile chassis dynamometer with same |
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| Publication Number | Publication Date |
|---|---|
| CN113607431A true CN113607431A (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110944501.5A Pending CN113607431A (en) | 2021-08-17 | 2021-08-17 | Rotary hub following system and automobile chassis dynamometer with same |
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| CN (1) | CN113607431A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114778128A (en) * | 2022-03-31 | 2022-07-22 | 东风汽车集团股份有限公司 | All-condition dynamic simulation test bed for detecting abnormal sound of whole vehicle and test method thereof |
-
2021
- 2021-08-17 CN CN202110944501.5A patent/CN113607431A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114778128A (en) * | 2022-03-31 | 2022-07-22 | 东风汽车集团股份有限公司 | All-condition dynamic simulation test bed for detecting abnormal sound of whole vehicle and test method thereof |
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