A bearing set axial play detection mechanism

Abstract

A bearing group axial play detection mechanism, the middle part of the clamp body is provided with an inner hole matched with the shape of a PTO assembly, an adjusting bolt is installed at the center of the bottom of the clamp body, a wrench penetrates the inner hole and is connected with the adjusting bolt, a pressing plate is installed at the outer edge of the upper part of the clamp body, the PTO assembly is positioned through the inner hole and the upper end face of the clamp body and is pressed tightly through the pressing plate, and a dial gauge is installed outside the clamp body through a magnetic gauge seat, and the positioning head of the dial gauge is in contact with the end face of the PTO gear. The bearing group axial play detection mechanism has the advantages that the detection mode is simple and effective, the detection efficiency is improved, the detection cost is reduced, the axial play precision of the bearing group is ensured, and the use performance requirement is met.

Description

Technical Field

[0001] This utility model relates to the field of mechanical testing equipment technology. Background Technology

[0002] With the rapid development of my country's economy, the demand for construction machinery products for infrastructure projects is gradually increasing. PTO components, with their high transmission efficiency, low cost, and long lifespan, have become a leading product in the industry. Their working principle is as follows: PTO components... Figure 1 As shown, the PTO gear 6 is installed inside the PTO chamber 1 using two sets of tapered roller bearings (bearing assembly 2) and inner and outer bushings. The PTO chamber 1 and the PTO gear 6 can rotate relative to each other. The PTO chamber 1 is then bolted to the engine housing. At this point, the PTO gear 6 is meshed with the timing gear in the engine gear housing. The rotational power of the timing gear is transmitted to the transmission sleeve on the PTO gear 6, thus continuously outputting power. Design requirements: After assembly, the axial clearance of the two sets of tapered roller bearings must be within a certain range to ensure the bearing's service life. However, currently, there is no dedicated fixture for detecting the axial clearance of the bearing assembly in the PTO component; it is only detected manually using a dial indicator, which is inefficient and inaccurate, and usually cannot meet product quality requirements. Summary of the Invention

[0003] To address the issues of low efficiency and low accuracy in detecting axial clearance of bearing assemblies in PTO components, this invention provides a bearing assembly axial clearance detection mechanism.

[0004] The technical solution adopted by this utility model to achieve the above-mentioned objective is as follows: an axial clearance detection mechanism for a bearing assembly, wherein the clamp body has an inner hole in the middle that matches the shape of the PTO assembly 3, an adjusting bolt 10 is installed at the center of the bottom of the clamp body, a wrench 4 passes through the inner hole and is connected to the adjusting bolt 10, a pressure plate 11 is installed on the upper outer edge of the clamp body, the PTO assembly 3 is positioned by the inner hole and the upper end face of the clamp body and is pressed by the pressure plate 11; a dial indicator 5 is installed on the outside of the clamp body by a magnetic base 12, and the positioning head of the dial indicator 5 contacts the gear end face of the PTO gear 6.

[0005] The clamping body includes a lower clamping body 9, a middle clamping body 8 and an upper clamping body 7 installed sequentially from bottom to top. The lower clamping body 9, the middle clamping body 8 and the upper clamping body 7 are fixedly connected by clamping body fixing bolts 16. Adjusting bolts 10 are installed on the lower clamping body 10. The middle clamping body 8 and the upper clamping body 7 are provided with inner holes.

[0006] The pressure plate 11 is installed on the upper clamping body 7 by pressure plate fixing bolts 14.

[0007] The clamp fixing bolt 15 is installed on the lower clamp body 9.

[0008] The bearing assembly axial clearance detection mechanism of this utility model has a simple and effective detection method, which improves detection efficiency and reduces detection costs; it ensures the axial clearance accuracy of the bearing assembly and meets the performance requirements. Attached Figure Description

[0009] Figure 1 This is a front view cross-sectional structural diagram of the bearing assembly axial clearance detection mechanism of this utility model.

[0010] In the diagram: 1. PTO chamber, 2. Bearing assembly, 3. PTO assembly, 4. Wrench, 5. Dial indicator, 6. PTO gear, 7. Upper clamp, 8. Middle clamp, 9. Lower clamp, 10. Adjusting bolt, 11. Pressure plate, 12. Magnetic gauge holder, 13. Gauge holder, 14. Pressure plate fixing bolt, 15. Clamp fixing bolt, 16. Clamp fixing bolt. Detailed Implementation

[0011] The bearing assembly axial clearance detection mechanism of this utility model is as follows: Figure 1 As shown, the clamping body includes a lower clamping body 9, a middle clamping body 8, and an upper clamping body 7 installed sequentially from bottom to top. The lower clamping body 9, the middle clamping body 8, and the upper clamping body 7 are fixedly connected by clamping body fixing bolts 16. Adjusting bolts 10 are installed on the lower clamping body 10. The middle clamping body 8 and the upper clamping body 7 are provided with inner holes. A wrench 4 passes through the inner hole and is connected to the adjusting bolts 10. A pressure plate 11 is installed on the upper outer edge of the clamping body. The pressure plate 11 is installed on the upper clamping body 7 by pressure plate fixing bolts 14. The PTO assembly 3 is positioned through the inner hole and the upper end face of the clamping body and is pressed by the pressure plate 11. A dial indicator 5 is installed on the outside of the clamping body through a magnetic base 12. The positioning head of the dial indicator 5 contacts the end face of the PTO gear 6. A clamp fixing bolt 15 is installed on the lower clamping body 9.

[0012] In use, the fixture is fixed by the clamp fixing bolt 15. The PTO assembly 3 to be tested is placed on the fixture. The PTO chamber 1 of the assembly is positioned in conjunction with the upper clamp body 7 and the middle clamp body 8. The bottom of the PTO gear 6 is located on the upper end face of the adjusting bolt 10. The PTO chamber 1 is pressed tightly by the pressure plate 11. The dial indicator 5 is attracted to the side of the clamp body by the magnetic base 12. The magnetic base 12 is used to position the dial indicator 5 so that the indicator head contacts the end face of the PTO gear 6 and the reading is zeroed. The adjusting bolt 10 is rotated by the wrench 4 to move the PTO gear 6 up and down. The PTO gear rises from the lowest point to the highest point. The change in the dial indicator reading is the axial clearance value of the bearing assembly. Through batch production and market verification, the PTO operation is stable, indicating that the fixture is accurate and reasonably designed, effectively ensuring the normal operation of production.

Claims

1. A bearing assembly axial clearance detection mechanism, characterized in that: The clamp body has an inner hole in the middle that matches the shape of the PTO assembly (3). An adjusting bolt (10) is installed at the center of the bottom of the clamp body. A wrench (4) passes through the inner hole and is connected to the adjusting bolt (10). A pressure plate (11) is installed on the upper outer edge of the clamp body. The PTO assembly (3) is positioned through the inner hole and the upper end face of the clamp body and is pressed by the pressure plate (11). A dial indicator (5) is installed on the outside of the clamp body through a magnetic base (12). The positioning head of the dial indicator (5) contacts the gear end face of the PTO gear (6).

2. The bearing assembly axial clearance detection mechanism according to claim 1, characterized in that: The clamping body includes a lower clamping body (9), a middle clamping body (8) and an upper clamping body (7) installed sequentially from bottom to top. The lower clamping body (9), the middle clamping body (8) and the upper clamping body (7) are fixedly connected by clamping body fixing bolts (16). Adjusting bolts (10) are installed on the lower clamping body (10). The middle clamping body (8) and the upper clamping body (7) are provided with inner holes.

3. The bearing assembly axial clearance detection mechanism according to claim 2, characterized in that: The pressure plate (11) is installed on the upper clamping body (7) by pressure plate fixing bolts (14).

4. The bearing assembly axial clearance detection mechanism according to claim 2, characterized in that: The clamp fixing bolt (15) is installed on the lower clamp body (9).

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