Motor vehicle axle coupling dynamometer

Abstract

The application discloses a motor vehicle axle coupling dynamometer device, which comprises a base, a vehicle load simulation mechanism arranged on the base, a steering load measuring mechanism for exerting load on steering and returning operations of a measured vehicle, and a steering mechanism arranged on the base and close to a vehicle wheel disc fixing seat. During steering of the measured vehicle, the vehicle load simulation mechanism rotates synchronously with the wheel hub of the measured vehicle through the steering mechanism. The motor vehicle axle coupling dynamometer device provided by the application has more accurate test results and improved test effect. The mechanism of the application is simple and compact, has less site limitation, can be applied to different test sites, is flexible, and can improve work efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle testing, in particular to a motor vehicle shaft coupling dynamometer device. BACKGROUND

[0002] Real vehicle testing can not only be used to verify the performance of the whole vehicle and related parts, but also to verify whether the vehicle has reached the initial design goal.

[0003] Most of the current automobile dynamometers are replaced by a roller to simulate the road surface. Various resistances encountered by the automobile during normal uniform speed driving are simulated by the loading device to measure the output power, torque and speed of the driving wheel of the automobile. It is used for loading debugging of the automobile, diagnosing faults of the automobile under load conditions, and measuring the performance of each system and component of the automobile. However, the existing dynamometer has the problem that the tire and the roller generate high temperature due to friction when the vehicle is running at high speed, which has the risk of tire burst. In order to avoid the risk of tire burst, the structure of the existing type of dynamometer is too complex.

[0004] In the automobile steering system, the torque sensor detects the torque or angle of the steering wheel generated by the driver during steering operation, and converts the required information into a digital signal input to the control unit. After the control unit operates on these signals, a torque suitable for the driving condition is obtained, and finally an instruction is issued to drive the motor to work. The actual vehicle steering output torque and angle can be tested. However, the existing vehicle testing device has high precision error of the actual output torque and angle of the vehicle steering due to the limitation of site conditions, which cannot achieve the ideal test effect. SUMMARY

[0005] The purpose of the present application is to provide a motor vehicle shaft coupling dynamometer device which is simple, compact, flexible, has a wide range of site adaptability and high testing precision to solve the problems in the background art.

[0006] To achieve the above purpose, the present application provides the following technical scheme: a motor vehicle shaft coupling dynamometer device, comprising:

[0007] a base;

[0008] a vehicle load simulation mechanism, which is arranged on the base and is connected with the hub of the tested vehicle through a vehicle wheel disc fixing seat to transmit the rotation of the hub shaft of the tested vehicle to the vehicle load simulation mechanism;

[0009] a steering load measuring mechanism for applying load force to the steering operation and return operation of the tested vehicle, which is arranged on one side of the base close to the vehicle wheel disc fixing seat;

[0010] Wherein, the base is provided with a steering mechanism, and the vehicle load simulation mechanism is synchronously rotated with the wheel hub of the vehicle under test through the steering mechanism during steering of the vehicle under test.

[0011] Preferably, the vehicle load simulation mechanism comprises a first load motor, a first torque sensor, a first support bearing, a first transmission shaft, a first fixed expansion sleeve, and a first sensor support.

[0012] The output shaft of the first load motor is drivingly connected with the vehicle wheel disc fixing seat through the first transmission shaft, the first torque sensor is arranged at the end of the output shaft of the first load motor, the first support bearing is sleeved on the outer wall of the first transmission shaft, and the first fixed expansion sleeve is arranged at the connection between the first transmission shaft and the vehicle wheel disc fixing seat.

[0013] Preferably, the steering load measurement mechanism comprises a second load motor, a second torque sensor, a second support bearing, a second transmission shaft, a second fixed expansion sleeve, a second sensor support, and a steering support seat.

[0014] The output shaft of the second load motor is drivingly connected with the second transmission shaft, the second torque sensor is arranged at the end of the output shaft of the second load motor, the second support bearing is sleeved on the outer wall of the second transmission shaft, and the second fixed expansion sleeve is arranged at one end of the second transmission shaft.

[0015] Preferably, one end of the steering support seat is rotatably connected with the first support bearing through a bearing sleeve, the other end of the steering support seat is provided with a through hole, and the second fixed expansion sleeve is sleeved with the through hole.

[0016] Preferably, the steering mechanism comprises an arc-shaped track, a sliding block is slidably arranged on the arc-shaped track, a motor support is arranged on the sliding block, and the first load motor is arranged on the motor support. During steering of the vehicle under test, the center of the arc-shaped track is the center of the steering motion track of the wheel hub of the vehicle under test.

[0017] Preferably, the base is provided with universal wheels at four ends of the bottom end face.

[0018] Preferably, a hydraulic outrigger is arranged at the rotating shaft of the universal wheel.

[0019] A motor vehicle shaft coupling dynamometer device comprises a base and a steering and load measurement integrated mechanism. The steering and load measurement integrated mechanism comprises a third load motor, and the output shaft of the third load motor is connected with the wheel hub of the vehicle under test through a flange plate.

[0020] Preferably, a load torque sensor is further included, the load torque sensor is connected with the output shaft end of the third load motor through a right angle connector, and a mounting seat is arranged at the lower end of the load torque sensor and fixedly connected with the base.

[0021] Preferably, a first gear is arranged at the bottom end of the mounting seat, a second gear is engagedly connected with the first gear, a motor mounting rack is arranged on the base, a servo motor is arranged on the motor mounting rack, and the servo motor is drivingly connected with the second gear.

[0022] Compared with the prior art, the present application has the beneficial effects that: the vehicle load simulation mechanism and the steering load measurement mechanism are arranged, the steering torque and the steering angle of the vehicle are tested through the two mechanisms, so that the test result is more accurate, and the test effect is improved; the mechanism is simple and compact, the site is less limited, can be applied to different test sites, is flexible, and can improve the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a top view schematic diagram of embodiment 1 of the present application;

[0024] Figure 2 is a three-dimensional schematic diagram of embodiment 1 of the present application;

[0025] Figure 3 is a schematic diagram of the connection between the vehicle load simulation mechanism and the steering mechanism of embodiment 1 of the present application;

[0026] Figure 4 is a structural schematic diagram of the vehicle load simulation mechanism of the present application;

[0027] Figure 5 is a structural schematic diagram of the steering load measurement mechanism of the present application;

[0028] Figure 6 is a schematic diagram of the connection between the vehicle load simulation mechanism and the bottom plate of the present application;

[0029] Figure 7 is a top view structural diagram of the test state of embodiment 2 of the present application;

[0030] Figure 8 is a three-dimensional structural diagram of the test state of embodiment 2 of the present application;

[0031] Figure 9 is a schematic diagram of the steering and load measurement integrated mechanism of embodiment 2 of the present application (one);

[0032] Figure 10 is a schematic diagram of the steering and load measurement integrated mechanism of embodiment 2 of the present application (two).

[0033] In the figure: 1, base; 11, universal wheel; 12, hydraulic support leg; 13, fixed base plate; 2, vehicle load simulation mechanism; 21, first load motor; 22, first torque sensor; 23, first support bearing; 24, first transmission shaft; 25, first fixed expansion sleeve; 3, vehicle wheel disc fixing seat; 4, steering load measuring mechanism; 41, second load motor; 42, second torque sensor; 43, second support bearing; 44, second transmission shaft; 45, second fixed expansion sleeve; 46, second sensor support; 47, steering support seat; 5, steering mechanism; 51, arc-shaped track; 52, motor support; 6, steering and load measuring integrated mechanism; 61, third load motor; 62, load torque sensor; 63, right-angle connecting piece; 64, mounting seat; 65, first gear; 66, motor mounting rack; 67, servo motor; 68, second gear. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application.

[0035] Embodiment 1

[0036] Please refer to Figures 1-10 The present application provides a technical solution: a motor vehicle shaft coupling dynamometer device, characterized in that it comprises a base 1, a vehicle load simulation mechanism 2, a vehicle wheel disc fixing seat 3, a steering load measuring mechanism 4, and a steering mechanism 5. The vehicle load simulation mechanism 2 is arranged on the base 1, and is connected with the hub of the vehicle to be tested through the vehicle wheel disc fixing seat 3 to transmit the rotation of the hub shaft of the vehicle to be tested to the vehicle load simulation mechanism 2. The steering load measuring mechanism 4 is used to exert a load force on the steering operation and the return operation of the vehicle to be tested, and is arranged on one side of the base 1 close to the vehicle wheel disc fixing seat 3. The base 1 is provided with the steering mechanism 5, and the vehicle load simulation mechanism 2 rotates synchronously with the hub of the vehicle to be tested through the steering mechanism 5 during the steering process of the vehicle to be tested.

[0037] In the embodiments provided by the present application, as Figure 4As shown, the vehicle load simulation mechanism 2 comprises a first load motor 21, a first torque sensor 22, a first support bearing 23, a first transmission shaft 24, a first fixed expansion sleeve 25, and a first sensor support 26. The output shaft of the first load motor 21 is drivingly connected with the vehicle wheel disc fixing seat 3 through the first transmission shaft 24, so as to facilitate the acquisition of the rotation data of the wheel shaft of the wheel hub of the tested vehicle. When the tested vehicle turns, the rotation track of the wheel hub of the tested vehicle forms a circle in the horizontal direction with the point where the vertical diameter of the wheel hub of the tested vehicle is located as the center. The wheel hub of the tested vehicle can drive the concentric circle of the vehicle load simulation mechanism 2 to rotate. The first torque sensor 22 is arranged at the end of the output shaft of the first load motor 21, so as to acquire the load force applied by the tested vehicle when the wheel hub turns and returns to the normal position. The first support bearing 23 is sleeved on the outer wall of the first transmission shaft 24, so as to support the first support bearing 23. The first fixed expansion sleeve 25 is arranged at the connection position of the first transmission shaft 24 and the vehicle wheel disc fixing seat 3. The first fixed expansion sleeve 25 makes the connection between the first transmission shaft 24 and the vehicle wheel disc fixing seat 3 more firm, so as to prevent the first transmission shaft 24 from being separated due to the high-speed rotation of the wheel hub during the test.

[0038] In the embodiments provided by the present application, as shown in Figure 5 As shown, the steering load measurement mechanism 4 comprises a second load motor 41, a second torque sensor 42, a second support bearing 43, a second transmission shaft 44, a second fixed expansion sleeve 45, a second sensor support 46, and a steering support seat 47. The output shaft of the second load motor 41 is drivingly connected with the second transmission shaft 44. The second torque sensor 42 is arranged at the end of the output shaft of the second load motor 41. The second support bearing 43 is sleeved on the outer wall of the second transmission shaft 44. The second fixed expansion sleeve 45 is arranged at one end of the second transmission shaft 44.

[0039] In a specific embodiment provided by the present application, as shown in Figure 3 , Figure 4 and Figure 5 As shown, one end of the steering support seat 47 is rotatably connected with the first support bearing 23 through a bearing sleeve. The other end of the steering support seat 47 is provided with a through hole, and the second fixed expansion sleeve 45 is sleeved through the through hole. When the tested vehicle turns, the vehicle load simulation mechanism 2 drives the steering support seat 47 to move, so that the steering load measurement mechanism 4 can acquire the load force applied by the wheel hub of the tested vehicle when the wheel hub turns and returns to the normal position.

[0040] In the embodiments provided by the present application, as shown in Figure 3As shown, in order to make the vehicle load simulation mechanism 2 and the tested vehicle hub concentric rotation smooth, the vehicle axle coupling dynamometer provided by the application further comprises a steering mechanism 5, the steering mechanism 5 comprises an arc-shaped track 51, a sliding block is arranged on the arc-shaped track 51 and is provided with a motor support 52, the first load motor 21 is arranged on the motor support 52, and the center of the arc-shaped track 51 is the center of the steering motion track of the hub of the tested vehicle during the steering of the tested vehicle. When the hub of the tested vehicle rotates, the vehicle load simulation mechanism 2 is driven to rotate along the arc-shaped track 51 of the steering mechanism 5 together with the hub of the tested vehicle, and the steering mechanism 5 can also support the vehicle load simulation mechanism 2.

[0041] Further, in order to facilitate the movement of the application, universal wheels 11 are arranged at the four ends of the bottom end surface of the base 1.

[0042] Further, a hydraulic outrigger 12 is arranged at the rotating shaft of the universal wheel 11 to support during the test.

[0043] It should be noted that the application is installed on the front steering hub of the tested vehicle during the test, and after the steering load measuring mechanism 4 of the application is omitted, the vehicle load simulation mechanism 2 is directly connected with the base 1 through the motor support 52, so that the load test of the rear hub of the vehicle can be performed.

[0044] Embodiment 2

[0045] Different from embodiment 1, the vehicle load simulation mechanism 2, the steering load measuring mechanism 4 and the steering mechanism 5 in embodiment 1 are integrated to form a steering and load measuring integrated mechanism 6, so that the structure is simplified, and the dynamometer provided by the application is simpler. The steering and load measuring integrated mechanism 6 comprises a third load motor 61, and the output shaft of the third load motor 61 is connected with the hub of the measured vehicle through a flange plate.

[0046] In the embodiment provided by the application, the third load motor 61 further comprises a load torque sensor 62, the load torque sensor 62 is connected with the output shaft end of the third load motor 6 through a right-angle connecting piece 63, and the lower end of the load torque sensor 62 is provided with a mounting seat 64, the mounting seat 64 is connected with the base 1, and the embodiment is used to obtain the load value of the tested vehicle.

[0047] In another embodiment provided by the present application, in order to measure the load value of the vehicle and the torque and the angle of rotation at the same time, the first gear 65 is arranged at the bottom end of the mounting seat 64, the first gear 65 is engaged with the second gear 68, the motor mounting frame 66 is arranged on the base 1, the servo motor 67 is arranged on the motor mounting frame 66, and the servo motor 67 is drivingly connected with the second gear 68. The servo motor 67 is used to drive the second gear 68 to rotate, and then drive the first gear 65 to rotate, so as to simulate the torque and the angle of rotation of the vehicle when turning. In order to make the simulation data more accurate, the diameter of the second gear 68 is smaller than that of the first gear 65.

[0048] Further, the fixed bottom plate 13 is arranged below the base 1, two straight linear guides are arranged in parallel on the fixed bottom plate 13, the base 1 is slidingly connected with the linear guides through the sliding blocks arranged at the bottom end, and in the test, the base 1 can be slid to the direction of the hub of the vehicle to be tested, so as to facilitate the connection between the present application and the hub of the vehicle to be tested in the test.

[0049] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A motor vehicle axle coupling dynamometer, characterized in that: include: Base (1); A vehicle load simulation mechanism (2), the vehicle load simulation mechanism (2) being arranged on the base (1), the vehicle load simulation mechanism (2) being connected to the wheel hub of the tested vehicle via a vehicle wheel disc fixing seat (3) for transmitting the rotation of the wheel hub axle of the tested vehicle to the vehicle load simulation mechanism (2), the vehicle load simulation mechanism (2) comprising a first load motor (21), a first torque sensor (22), a first support bearing (23), a first transmission shaft (24), a first fixed expansion sleeve (25), and a first sensor bracket (26); The output shaft of the first load motor (21) is drivingly connected to the vehicle wheel disc fixing seat (3) via the first transmission shaft (24); the first torque sensor (22) is provided at the output shaft end of the first load motor (21); the first support bearing (23) is sleeved on the outer wall of the first transmission shaft (24); and the first fixed expansion sleeve (25) is provided at the connection between the first transmission shaft (24) and the vehicle wheel disc fixing seat (3); A steering load measuring mechanism (4) for applying a load force to the steering operation and the return operation of the tested vehicle, wherein the steering load measuring mechanism (4) is arranged on a side of the base (1) close to the vehicle wheel fixing seat (3); The base (1) is provided with a steering mechanism (5); during the steering process of the tested vehicle, the vehicle load simulation mechanism (2) rotates synchronously with the wheel hub of the tested vehicle through the steering mechanism (5); the steering mechanism (5) comprises an arc track (51); a slider is slidably provided on the arc track (51); a motor bracket (53) is provided on the slider; the first load motor (21) is arranged on the motor bracket (53); during the steering process of the tested vehicle, the center of the arc track (51) is the center of the steering motion trajectory of the wheel hub of the tested vehicle.

2. The motor vehicle axle coupling dynamometer according to claim 1, characterized in that: The steering load measuring mechanism (4) comprises a second load motor (41), a second torque sensor (42), a second support bearing (43), a second transmission shaft (44), a second fixed expansion sleeve (45), a second sensor bracket (46) and a steering support seat (47); The output shaft of the second load motor (41) is drivingly connected to the second transmission shaft (44); the second torque sensor (42) is arranged at the output shaft end of the second load motor (41); the second support bearing (43) is sleeved on the outer wall of the second transmission shaft (44); and the second fixed expansion sleeve (45) is arranged at one end of the second transmission shaft (44).

3. The motor vehicle axle coupling dynamometer according to claim 2, characterized in that: One end of the steering support seat (47) is rotatably connected to the first support bearing (23) via a bearing sleeve, and the other end of the steering support seat (47) is provided with a through hole, and is sleeved with the second fixed expansion sleeve (45) via the through hole.

4. The motor vehicle axle coupling dynamometer according to claim 3, characterized in that: Universal wheels (11) are provided at four ends of the bottom end surface of the base (1).

5. The motor vehicle axle coupling dynamometer according to claim 4, characterized in that: A hydraulic support leg (12) is provided at the rotating shaft of the universal wheel (11).

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