A device for measuring the relationship between wheel hub bearing torque and axial force

Abstract

The present invention relates to a device for measuring the relationship between wheel hub bearing torque and axial force, comprising: a bearing fixing plate, a wheel hub bearing, a ball cage spline shaft, a ball cage connecting plate, a support plate, a mounting plate, a connecting rod, a tension sensor, a base, and a shaft end nut. The base is provided with support plates at both ends, the support plates being fixedly connected to the bottom surface of the bearing fixing plate; the base is provided with a tension sensor, which is connected to a connecting rod; the lower end surface of the bearing fixing plate is fixedly connected to the wheel hub bearing flange, the ball cage spline shaft having its shaft end passing through the wheel hub bearing and the central through hole of the bearing fixing plate and connected to the shaft end nut; the ball cage connecting plate has a through hole in the center of the upper end surface, and an inclined surface is provided around the through hole on the lower end surface; the lower end surface of the ball cage connecting plate is provided with a mounting plate, which is connected to the connecting rod via a pin. The present invention restores the corresponding relationship between torque and axial force in actual use in principle and measures it. The measurement results have guiding significance for the assembly standards of wheel hub bearings.

Description

Technical Field

[0001] The invention belongs to the automotive wheel hub bearing industry, and in particular is a device for measuring the relationship between the torque and axial force of a wheel hub bearing. Background Art

[0002] Currently, controlling the amount of negative clearance in the design of automotive wheel hub bearings is a challenge in the development of wheel hub bearings. Negative clearance refers to the reverse change in axial clearance after a load is applied, and its value is closely related to the assembly quality of the wheel hub bearing. Currently, negative clearance in wheel hub bearings is only controlled during the manufacturing process by controlling the machining accuracy of the parts. There is no technical means to control it during assembly. However, during actual assembly, when the wheel hub bearing, the spline shaft, and the shaft nut are mated and tightened, negative clearance is generated in the wheel hub bearing. Controlling the axial force between the spline shaft and the shaft nut can control the amount of negative clearance in the wheel hub bearing. During assembly, the magnitude of the axial force can be controlled by torque. Therefore, accurately measuring the relationship between the torque and axial force of the wheel hub bearing and using a standard torque value during assembly are essential for controlling the negative clearance of the bearing during assembly. Currently, there is no accurate method or device in the industry for measuring the relationship between torque and axial force during wheel hub bearing installation. Summary of the Invention

[0003] In response to the shortcomings of the existing technology, the present invention restores the corresponding relationship between torque and axial force in actual use in principle and measures it, which is more in line with reality. The measurement results have guiding significance for the assembly standards of wheel hub bearings.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: A device for measuring the relationship between the torque and axial force of a wheel hub bearing, comprising: a bearing fixing plate, a wheel hub bearing, a ball cage spline shaft, a ball cage connecting plate, a support plate, a mounting plate, a connecting rod, a tension sensor, a base and a shaft end nut, wherein support plates are symmetrically arranged at both ends of the base, the upper end surface of the support plate is provided with a bearing fixing plate and is fixedly connected to the bottom surface of the bearing fixing plate; the center of the upper end surface of the base is provided with a tension sensor, and the center of the upper end surface of the tension sensor is connected to a connecting rod; a through hole is provided in the middle of the bearing fixing plate, and an axis is provided at the upper opening of the through hole End nut; the lower end surface of the bearing fixing plate is fixedly connected to the flange end of the wheel hub bearing, the spline shaft end on the upper part of the ball cage spline shaft is matched with the wheel hub bearing, and the spline shaft end on the upper part of the ball cage spline shaft passes through the inner wheel of the wheel hub bearing and the center through hole of the bearing fixing plate and is connected to the shaft end nut; the ball cage connecting plate is arranged below the bearing fixing plate, and a through hole is provided in the middle thereof, and the lower end opening of the through hole is set as a conical surface matching the ball cage end of the lower part of the ball cage spline shaft, and vertical mounting plates are symmetrically provided at both ends of the lower end surface of the ball cage connecting plate, and the mounting plates are connected to the connecting rod through a pin shaft.

[0005] The upper end of the connecting rod is in a circular ring structure and is connected to the mounting plate through a pin shaft, and the lower end of the rod body is provided with an external thread that cooperates with the tension sensor.

[0006] The parts connecting the support plate, the bearing fixing plate and the base are fixedly connected by fastening bolts; the ball cage connecting plate and the mounting plate are fixedly connected by fastening bolts; and the tension sensor is fixed to the center of the upper end surface of the base by fastening bolts.

[0007] The tension sensor is a JLBU-1 spoke-type tension and pressure sensor, and the tension sensor is connected to an MCK-ZI intelligent display controller.

[0008] The beneficial effects of the device of the present invention are: restoring the corresponding relationship between torque and axial force in actual use in principle and measuring it, which is more in line with reality, and the measurement results have guiding significance for the assembly standards of wheel hub bearings. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the present invention;

[0010] Figure 2 This is a cross-sectional view of the present invention.

[0011] In the figure: 1. Bearing fixing plate, 2. Wheel hub bearing, 3. Ball cage spline shaft, 4. Ball cage connecting plate, 5. Support plate, 6. Mounting plate, 7. Connecting rod, 8. Tension sensor, 9. Base, 10. Shaft end nut. DETAILED DESCRIPTION

[0012] The present invention will be further described in detail below with reference to the accompanying drawings.

[0013] As shown in the figure, a device for measuring the relationship between the torque and axial force of a wheel hub bearing comprises: a bearing fixing plate 1, a wheel hub bearing 2, a ball cage spline shaft 3, a ball cage connecting plate 4, a support plate 5, a mounting plate 6, a connecting rod 7, a tension sensor 8, a base 9 and a shaft end nut 10. The base 9 is symmetrically provided with support plates 5 at both ends. The upper end surface of the support plate 5 is provided with a bearing fixing plate 1 and is fixedly connected to the bottom surface of the bearing fixing plate 1; the center of the upper end surface of the base 9 is provided with a tension sensor 8, and the center of the upper end surface of the tension sensor 8 is connected to the connecting rod 7; the middle part of the bearing fixing plate 1 is provided with a through hole, and the upper hole of the through hole is provided with a through hole. The bearing fixing plate 1 is fixedly connected to the flange end of the wheel hub bearing 2. The splined shaft end of the upper portion of the CVJ spline shaft 3 is matingly connected to the wheel hub bearing 2. The splined shaft end of the upper portion of the CVJ spline shaft 3 passes through the inner wheel of the wheel hub bearing 2 and the central through-hole of the bearing fixing plate 1 and is connected to the shaft end nut 10. The CVJ connecting plate 4 is arranged below the bearing fixing plate 1 and has a through-hole in its center. The lower end of the through-hole is formed into a conical surface that matches the CVJ end of the lower portion of the CVJ spline shaft 3. Vertical mounting plates 6 are symmetrically provided at both ends of the lower end surface of the CVJ connecting plate 4. The mounting plates 6 are connected to the connecting rod 7 via a pin. The upper end of the connecting rod 7 is annular and is connected to the mounting plate 6 via a pin. The lower end of the connecting rod 7 is provided with an external thread that matches the tension sensor 8. The parts connecting the support plate 5, the bearing fixing plate 1 and the base 9 are fixedly connected by fastening bolts; the ball cage connecting plate 4 and the mounting plate 6 are fixedly connected by fastening bolts; the tension sensor 8 is a JLBU-1 type spoke type tension and pressure sensor, and the tension sensor 8 is connected to an MCK-ZI type intelligent display controller.

[0014] When using a device for measuring the relationship between the torque and axial force of a wheel hub bearing, first, after one end of the spline shaft of the ball cage spline shaft 3 passes through the central through hole of the ball cage connecting plate 4, the ball cage end of the ball cage spline shaft 3 is fitted with the inclined surface provided on the bottom surface of the ball cage connecting plate 4, and the spline shaft end is matched with the inner gear ring of the wheel hub bearing 2. After the spline shaft passes through one end of the wheel hub bearing 2 and further passes through the central through hole of the bearing fixing plate 1, it is matched with the shaft end nut 10 and connected. The flange end of the wheel hub bearing 2 is fixed to the bearing fixing plate 1 by bolts. Next, the tension sensor 8 connected to the lower end of the connecting rod 7 is fixed to the base 9, and then the two support plates 5 are fixed to the two ends of the base 9 by bolts. The two support plates 5 are fixedly connected to the two ends of the bearing fixing plate 1 by bolts, and finally the circular ring part of the upper end of the connecting rod 7 is connected to the mounting plates 6 on both sides through the pin shaft, and then the mounting plate 6 is fixedly connected to the ball cage connecting plate 4 by bolts. At this time, the device is assembled and made statically stable. At this time, the cooperation between the wheel hub bearing 2, the ball cage spline shaft 3 and the shaft end nut 10 simulates the installation cooperation state of the actual vehicle. By using the torque value given by the torque wrench to the shaft end nut 10, combined with the axial tension value displayed by the tension sensor 8 on the intelligent display controller, the corresponding relationship between the two is obtained, thereby obtaining the optimal torque value, providing reference and guidance for actual installation.

[0015] The parts not described in detail in this invention are prior art.

Claims

1. A device for measuring the relationship between wheel hub bearing torque and axial force, comprising: A bearing fixing plate (1), a wheel hub bearing (2), a ball cage spline shaft (3), a ball cage connecting plate (4), a support plate (5), a mounting plate (6), a connecting rod (7), a tension sensor (8), a base (9) and a shaft end nut (10), characterized in that: the base (9) is symmetrically provided with support plates (5) at both ends, the support plate (5) is provided with a bearing fixing plate (1) on its upper end surface and is fixedly connected to the bottom surface of the bearing fixing plate (1); the base (9) is provided with a tension sensor (8) at the center of its upper end surface, and the tension sensor (8) is connected to the connecting rod (7) at the center of its upper end surface; the bearing fixing plate (1) is provided with a through hole in the middle, and the shaft end nut (10) is provided at the upper opening of the through hole. 0); the lower end surface of the bearing fixing plate (1) is fixedly connected to the flange end of the wheel hub bearing (2); the spline shaft end of the upper part of the ball cage spline shaft (3) is matched with the wheel hub bearing (2); the spline shaft end of the upper part of the ball cage spline shaft (3) passes through the inner wheel of the wheel hub bearing (2) and the central through hole of the bearing fixing plate (1) and is connected to the shaft end nut (10); the ball cage connecting plate (4) is arranged below the bearing fixing plate (1), and a through hole is provided in the middle thereof, and the lower end opening of the through hole is set as a conical surface matching the ball cage end of the lower part of the ball cage spline shaft (3); vertical mounting plates (6) are symmetrically provided at both ends of the lower end surface of the ball cage connecting plate (4), and the mounting plates (6) are connected to the connecting rod (7) through a pin shaft.

2. The device for measuring the relationship between wheel hub bearing torque and axial force according to claim 1, wherein: The upper end of the connecting rod (7) is in a circular ring structure and is connected to the mounting plate (6) via a pin shaft, and the lower end of the rod body is provided with an external thread that cooperates with the tension sensor (8).

3. The device for measuring the relationship between wheel hub bearing torque and axial force according to claim 1, characterized in that: The portions connecting the support plate (5), the bearing fixing plate (1) and the base (9) are all fixedly connected by fastening bolts.

4. The device for measuring the relationship between wheel hub bearing torque and axial force according to claim 1, wherein: The ball cage connecting plate (4) and the mounting plate (6) are fixedly connected by fastening bolts.

5. The device for measuring the relationship between wheel hub bearing torque and axial force according to claim 1, characterized in that: The tension sensor (8) is fixed to the center of the upper end surface of the base (9) by fastening bolts.

6. The device for measuring the relationship between wheel hub bearing torque and axial force according to claim 1, characterized in that: The tension sensor (8) is a spoke-type tension and pressure sensor, and the tension sensor (8) is connected to an intelligent display controller.

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