Tool for testing wind resistance of wheel tire assembly
By designing a wheel tire assembly wind resistance test tooling including a turntable, support mechanism and drive mechanism, the problem of difficulty in performing wheel wind resistance testing in the prior art is solved, and efficient and accurate testing is achieved in the wind tunnel laboratory.
Patent Information
- Application Number
- CN202421814299.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-30
AI Technical Summary
The prior art is difficult to effectively carry out wheel wind resistance testing, especially when the vehicle model is not required, and there is a lack of suitable testing tooling.
A workpiece for wind resistance testing of wheel tire assembly is designed, including a turntable, support mechanism and wheel tire assembly. The driving mechanism simulates linear driving and turning, and uses a force measurement balance to measure wind resistance.
It realizes the convenience and accuracy of wheel wind resistance testing in the wind tunnel laboratory, reduces the testing cost, and simulates the wind resistance testing when the real vehicle drives the wheels.
Smart Images
Figure CN222825231U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of testing tooling, in particular to a tooling for testing the wind resistance of a wheel and tire assembly. Background Art
[0002] In order to meet the requirements of low fuel consumption and increased mileage, major OEMs have been pursuing the ultimate reduction of vehicle wind resistance. Research results show that the aerodynamic drag caused by wheels and wheel cavities accounts for about 25% of the total aerodynamic drag of the vehicle. Therefore, optimizing wheel wind resistance is very meaningful for energy conservation and emission reduction of the vehicle.
[0003] The wheel wind resistance test is conducted in a wind tunnel laboratory. There are two main test methods for the wheel wind resistance test: one is to install the wheel on the actual vehicle and test it in a full-vehicle wind tunnel suitable for the actual vehicle size. This test method has a high test cost and requires a full-vehicle model; the other is to make a proportionally reduced model of the wheel and the full vehicle and test it in a small wind tunnel. This test method can reduce the test cost, but it also requires a full-vehicle model. For situations where you only care about the increase or decrease trend of wind resistance in the wheel area, you can only install the wheel and tire assembly for testing, but there is currently no suitable test tooling. Utility Model Content
[0004] In view of the above technical problems, the utility model proposes a tool for testing the wind resistance of a wheel and tire assembly, comprising a turntable, a supporting mechanism and a wheel and tire assembly, wherein the supporting mechanism is mounted on the turntable, a force measuring balance is mounted on the supporting mechanism, a first base plate is mounted on the force measuring balance by bolts, a driving mechanism is mounted on the first base plate, the wheel and tire assembly is mounted on the output end of the driving mechanism, and the driving mechanism is used to drive the wheel and tire assembly to rotate around the center when simulating straight-line driving.
[0005] Furthermore, the supporting mechanism includes a second base plate, which is fixedly mounted on the turntable by bolt two, and second columns are fixedly mounted on both sides of the second base plate by bolt three, and the force measuring balance is fixedly mounted above the two second columns by bolt three.
[0006] Furthermore, the driving mechanism includes a flange shaft, a support seat, a first column and a motor, the base of the motor is fixedly mounted on the first bottom plate by bolts four, two first columns are provided, and the two first columns are fixedly mounted on both sides of the first bottom plate by corresponding bolts five respectively, the support seat is fixedly mounted on the two first columns by bolts six, bearings and elastic retaining rings are installed at both ends of the support seat, a coupling is coaxially fixedly mounted on the output shaft of the motor, the flange shaft passes through the bearings and elastic retaining rings at both ends of the support seat and is coaxially fixedly connected with the coupling to ensure the coaxiality of the flange shaft and the motor output shaft, and the flange shaft and the support seat are relatively rotated through the bearings; the wheel tire assembly is coaxially mounted on the end of the flange shaft away from the motor output shaft by bolts seven at the center hole.
[0007] Furthermore, the motor adopts a 380V three-phase motor with a rated power of 5.5KW and a rated speed of 1400r / min.
[0008] Furthermore, the motor is provided with a speed regulator to achieve stepless speed regulation of the wheel and tire assembly.
[0009] Furthermore, the shape of the turntable is circular, and the turntable is driven to rotate around the center to simulate the rotation of the wheel and tire assembly when turning.
[0010] Furthermore, the force balance is used to measure the loads of the wheel and tire assembly in three directions: X, Y, and Z.
[0011] Furthermore, both ends of the support seat are provided with mounting grooves, the bearing and the elastic retaining ring are both installed in the mounting grooves, and the bearing is a cylindrical roller bearing.
[0012] Compared with the prior art, the utility model has the following beneficial effects: (1) the test fixture disclosed in the utility model can be installed to fix the wheel and tire assembly, and can also simulate the wind resistance test when the actual vehicle drives the wheel to rotate; (2) the test fixture disclosed in the utility model can be used to test the wind resistance of the wheel and tire assembly, thereby facilitating the test of the wheel wind resistance in a wind tunnel test room. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the exploded structure of the utility model.
[0014] Figure 2 It is a schematic diagram of the overall structure of the utility model.
[0015] Figure numbers: 1-wheel and tire assembly; 2-flange shaft; 3-support seat; 4-bearing; 5-elastic retaining ring; 6-first column; 7-coupling; 8-motor; 9-first base plate; 10-dynamometer balance; 11-second column; 12-second base plate; 13-turntable. DETAILED DESCRIPTION
[0016] The present invention will be further described below in conjunction with specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.
[0017] Example: Figure 1-Figure 2 The tooling for testing the wind resistance of a wheel and tire assembly shown in the figure comprises a turntable 13, a supporting mechanism and a wheel and tire assembly, wherein the supporting mechanism is mounted on the turntable 13, a force measuring balance 10 is mounted on the supporting mechanism, a first base plate 9 is mounted on the force measuring balance 10 by bolts, a driving mechanism is mounted on the first base plate 9, and the wheel and tire assembly 1 is mounted on the output end of the driving mechanism, and the driving mechanism is used to drive the wheel and tire assembly 1 to rotate around the center when simulating straight-line driving.
[0018] The supporting mechanism includes a second base plate 12, which is fixedly mounted on a turntable 13 by bolt 2, and second columns 11 are fixedly mounted on both sides of the second base plate 12 by bolt 3, and the force measuring balance 10 is fixedly mounted above the two second columns 11 by bolt 3; the turntable 13 is circular in shape, and is driven to rotate around the center to simulate the rotation of the wheel and tire assembly 1 when turning.
[0019] The driving mechanism includes a flange shaft 2, a support seat 3, a first column 6 and a motor 8. The base of the motor 8 is fixedly mounted on the first bottom plate 9 by bolts 4. Two first columns 6 are provided. The two first columns 6 are fixedly mounted on both sides of the first bottom plate 9 by corresponding bolts 5 respectively. The support seat 3 is fixedly mounted on the two first columns 6 by bolts 6. Bearings 4 and elastic retaining rings 5 are installed at both ends of the support seat 3. A coupling 7 is coaxially fixedly mounted on the output shaft of the motor 8. The flange shaft 2 passes through the bearings 4 and elastic retaining rings 5 at both ends of the support seat 3 and is coaxially fixedly connected with the coupling 7 to ensure the coaxiality of the flange shaft 2 and the output shaft of the motor 8. The flange shaft 2 and the support seat 3 are relatively rotated by the bearing 4. The wheel tire assembly 1 is coaxially mounted on the end of the flange shaft 2 away from the output shaft of the motor 8 by bolts 7 at the center hole. Mounting grooves are provided at both ends of the support seat 3. The bearings 4 and elastic retaining rings 5 are installed in the mounting grooves. The bearings 4 use cylindrical roller bearings. The load of the wheel tire assembly 1 in the three directions of X, Y and Z is measured by a force measuring balance 10.
[0020] The motor 8 is a 380V three-phase motor with a rated power of 5.5KW and a rated speed of 1400r / min. The motor 8 is equipped with a speed regulator to achieve stepless speed regulation of the wheel and tire assembly 1.
[0021] The working principle of the utility model is as follows: the whole structure is placed in a wind tunnel test room. When no wind resistance is initially applied, the output shaft of the motor 8 drives the flange shaft 2 to rotate in the bearings 4 at both ends of the support seat 3 through the coupling 7, and the flange shaft 2 drives the wheel tire assembly 1 to rotate. The loads in the X, Y and Z directions at this time are measured by the force measuring balance 10, and the loads in the X, Y and Z directions at this time are set as reference values.
[0022] Wind resistance is applied by the fan in the wind tunnel test room, and the output shaft of the motor 8 drives the flange shaft 2 to rotate in the bearings 4 at both ends of the support seat 3 through the coupling 7, and the flange shaft 2 drives the wheel and tire assembly 1 to rotate, and the loads in the three directions of X, Y, and Z at this time are measured by the force measuring balance 10, and the loads in the three directions of X, Y, and Z at this time are used as the first measurement value, and the first measurement value is compared with the initial reference value to complete the test of the wind resistance of the wheel and tire assembly 1; the driving turntable 13 is rotated around the center to simulate the rotation of the wheel and tire assembly 1 when turning, and the loads in the three directions of X, Y, and Z measured by the force measuring balance 10 when the driving turntable 13 drives the overall rotation are measured, and the loads in the three directions of X, Y, and Z at this time are used as the second measurement value, and the second measurement value is compared with the initial reference value to simulate the wind resistance test when the actual vehicle drives the wheel to rotate.
Claims
1. A tool for testing the wind resistance of a wheel and tire assembly, comprising a turntable (13), a support mechanism and a wheel and tire assembly, wherein the support mechanism is mounted on the turntable (13), and is characterized in that: A force measuring balance (10) is mounted on the support mechanism, a first base plate (9) is mounted on the force measuring balance (10) via a bolt, a driving mechanism is mounted on the first base plate (9), the wheel and tire assembly (1) is mounted at the output end of the driving mechanism, and the driving mechanism is used to drive the wheel and tire assembly (1) to rotate around the center when simulating straight-line driving.
2. A tool for testing wind resistance of a wheel and tire assembly as claimed in claim 1, characterized in that: The support mechanism comprises a second base plate (12), the second base plate (12) being fixedly mounted on a turntable (13) by means of bolts (2), second upright posts (11) being fixedly mounted on both sides of the second base plate (12) by means of bolts (3), and the force measuring balance (10) being fixedly mounted above the two second upright posts (11) by means of bolts (3).
3. A tool for testing wind resistance of a wheel and tire assembly as claimed in claim 2, characterized in that: The driving mechanism comprises a flange shaft (2), a support seat (3), a first column (6) and a motor (8); the base of the motor (8) is fixedly mounted on a first base plate (9) by means of bolts (4); two first columns (6) are provided, and the two first columns (6) are respectively fixedly mounted on two sides of the first base plate (9) by means of corresponding bolts (5); the support seat (3) is fixedly mounted on the two first columns (6) by means of bolts (6); bearings (4) and elastic retaining rings (5) are mounted on both ends of the support seat (3). A coupling (7) is coaxially fixedly mounted on the output shaft of the motor (8); the flange shaft (2) passes through the bearings (4) and the elastic retaining ring (5) at both ends of the support seat (3) and is coaxially fixedly connected to the coupling (7) to ensure the coaxiality of the flange shaft (2) and the output shaft of the motor (8); the flange shaft (2) and the support seat (3) are relatively rotated by the bearings (4); and the wheel and tire assembly (1) is coaxially mounted on the end of the flange shaft (2) away from the output shaft of the motor (8) by bolts (7) at the center hole.
4. A tool for testing wind resistance of a wheel and tire assembly as claimed in claim 3, characterized in that: The motor (8) is a 380V three-phase motor with a rated power of 5.5KW and a rated speed of 1400r / min.
5. A tool for testing wind resistance of a wheel and tire assembly as claimed in claim 4, characterized in that: The motor (8) is provided with a speed regulator to achieve stepless speed regulation of the wheel and tire assembly (1).
6. A tool for testing wind resistance of a wheel and tire assembly as claimed in claim 5, characterized in that: The rotating disk (13) is circular in shape, and is driven to rotate around a center to simulate the rotation of the wheel and tire assembly (1) when turning.
7. A tool for testing wind resistance of a wheel and tire assembly as claimed in claim 6, characterized in that: The force measuring balance (10) is used to measure the loads of the wheel and tire assembly (1) in three directions: X, Y, and Z.
8. A tool for testing wind resistance of a wheel and tire assembly as claimed in claim 7, characterized in that: Both ends of the support seat (3) are provided with mounting grooves, the bearing (4) and the elastic retaining ring (5) are both mounted in the mounting grooves, and the bearing (4) is a cylindrical roller bearing.