Differential small assembly bevel gear end face gap detection device

Abstract

The utility model belongs to differential mechanism detection technical field, concretely relates to differential mechanism small assembly bevel gear end face gap detection device. The specific technical scheme is: including detection cylinder, detection instrument, differential mechanism shell, the detection cylinder is with the upper side axle diameter hole of differential mechanism shell adaptation, two planetary gears are connected with differential mechanism shell through planetary axle, two planetary gears are engaged with upper side bevel gear, when detecting, the detection cylinder lower end surface and the axle end part of upper side bevel gear abut, the detection end of detection instrument and detection cylinder upper end surface contact. Simple structure, convenient operation, high detection efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of differential testing technology, specifically relating to a device for detecting the end face clearance of bevel gears in differential subassemblies. Background Technology

[0002] The differential is a key component installed in a mechanical transmission system. Its core function is to allow the output shafts on the left and right or top and bottom to rotate at different speeds during power transmission, while maintaining continuous power output. The differential bevel gear end face clearance refers to the axial clearance between the planetary bevel gears and the half-shaft bevel gears in the differential (i.e., the distance between the gear end faces).

[0003] In existing technology, the method for measuring the end face clearance of the bevel gear in the differential subassembly involves removing the differential cover to expose the end faces of the planetary gears and half-shaft gears. The half-shafts are then fixed with a wrench or other tools to prevent rotation during measurement. A feeler gauge is then inserted into the gap between the end faces of the planetary gears and half-shaft gears, and 3-4 points are evenly selected along the circumference for measurement. The average value is then taken as the final measurement. This method requires two people to operate simultaneously, is time-consuming and labor-intensive, and has low measurement efficiency. Summary of the Invention

[0004] To solve the above-mentioned technical problems, this utility model provides a device for detecting the end face clearance of the bevel gear in a differential subassembly.

[0005] To achieve the above-mentioned objectives of this utility model, the technical solution adopted by this utility model is: a differential subassembly bevel gear end face clearance detection device, comprising a detection cylinder, a detection instrument, and a differential housing. The detection cylinder is adapted to the upper shaft diameter hole of the differential housing. Two planetary gears are connected to the differential housing through planetary shafts, and the two planetary gears mesh with the upper and lower bevel gears. During detection, the lower end face of the detection cylinder abuts against the shaft end of the upper bevel gear, and the detection end of the detection instrument contacts the upper end face of the detection cylinder.

[0006] Preferably, the diameter of the detection cylinder is 0.05 mm smaller than the diameter of the upper shaft bore of the differential housing.

[0007] Preferably, it includes a first base, on which a mounting hole is provided that is adapted to the lower shaft diameter end of the differential housing.

[0008] Preferably, it includes a second base, on which a vertical slide rod is provided, a sliding sleeve is slidably provided on the vertical slide rod, a connecting rod is fixedly provided on the sliding sleeve, the detection instrument is provided at the end of the connecting rod away from the sliding sleeve, and the sliding sleeve is locked and fixed on the vertical slide rod by a first locking member.

[0009] Preferably, the first locking member includes a first locking bolt, and the sliding sleeve has a threaded hole adapted to the first locking bolt along its radial direction.

[0010] Preferably, the second base is provided with a sliding groove, the bottom of the vertical sliding rod is provided with a slider adapted to the sliding groove, and the outer circumferential sidewall at the connection between the lower end of the vertical sliding rod and the slider is provided with a thread adapted to the second locking nut, and the second locking nut locks and fixes the position of the vertical sliding rod in the sliding groove.

[0011] Preferably, the cross-sectional shape of the groove is T-shaped, and the cross-sectional shape of the slider is T-shaped.

[0012] This utility model has the following beneficial effects:

[0013] By setting up a testing cylinder and a testing instrument, two planetary gears are connected to the differential housing through planetary shafts inside the differential housing. Both planetary gears are meshed with bevel gears on their upper and lower sides. The testing cylinder is placed in the upper shaft diameter hole of the differential housing, with the lower end face of the testing cylinder abutting against the shaft end of the upper bevel gear. The testing end of the testing instrument is placed on the upper end face of the testing cylinder. During testing, it is only necessary to first apply pressure to the testing cylinder to make the planetary gears and bevel gears fit tightly, and then lift the planetary shaft upwards to make the upper bevel gear drive the testing cylinder to move together. The end face clearance value of the bevel gear of the differential can be read directly. The structure is simple, the operation is convenient, and the testing efficiency is high. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the detection device of this utility model;

[0015] Figure 2 This is a cross-sectional schematic diagram of the differential housing of this utility model;

[0016] Figure 3 This is a perspective view of the differential housing of this utility model;

[0017] Figure 4 This is a schematic diagram of the meshing of the bevel gear and planetary gear in the small assembly of this utility model.

[0018] The following components are labeled in the attached diagram: 1. Differential housing; 2. Test cylinder; 3. Planetary shaft; 4. Test instrument; 5. First base; 7. Connecting rod; 8. Sliding sleeve; 9. First locking element; 10. Vertical sliding rod; 11. Second locking nut; 12. Sliding block; 13. Second base; 14. Slide groove; 15. Planetary gear; 16. Bevel gear. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0020] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] like Figures 1-4 As shown, this application discloses a device for detecting the end face clearance of the bevel gear 16 in a differential subassembly, including a detection cylinder 2, a detection instrument 4, and a differential housing 1. The detection cylinder 2 is adapted to the upper shaft diameter hole of the differential housing 1. Inside the differential housing 1, two planetary gears 15 are connected to the differential housing 1 via planetary shafts 3. Figures 2-4 As shown, bevel gears 16 (half-shaft gears) mesh on both the upper and lower sides of the two planetary gears 15, with the upper bevel gear 16 positioned on the upper side of the two planetary gears 15. During testing, the testing cylinder 2 is placed into the upper shaft diameter hole of the differential housing 1, and a force is applied to the upper end face of the testing cylinder 2, causing the lower end face of the testing cylinder 2 to abut against the upper end of the shaft end of the upper bevel gear 16. The testing end of the testing instrument 4 contacts the upper end face of the testing cylinder 2. The upper end face of the testing cylinder 2 remains horizontal at all times. The testing instrument 4 can be a lever dial indicator or a lever micrometer.

[0022] In a preferred embodiment, the diameter of the detection cylinder 2 is 0.05 mm smaller than the diameter of the upper shaft bore of the differential housing 1.

[0023] In a further embodiment, the bevel gear 16 end face clearance detection device also includes a first base 5. The first base 5 is provided with a mounting hole that is adapted to the lower shaft diameter end of the differential housing 1. During the test, the lower shaft diameter end of the differential housing 1 is placed in the mounting hole so that the entire differential housing 1 is always kept in a horizontal state, without the need for manual support of the entire differential housing 1. After the test is completed, the entire differential housing 1 is removed from the first base 5.

[0024] In a further embodiment, to facilitate adjustment of the vertical position of the detection instrument 4, the bevel gear 16 end face clearance detection device further includes a second base 13. A vertical slide rod 10 is mounted on the second base 13, and a sliding sleeve 8 is slidably mounted around the vertical slide rod 10. A connecting rod 7 is fixedly mounted on the sliding sleeve 8, and the detection instrument 4 is mounted at the end of the connecting rod 7 away from the sliding sleeve 8. The sliding sleeve 8 is locked and fixed to the vertical slide rod 10 by a first locking member 9. The detection instrument 4 and the connecting rod 7 are rotatably connected, allowing adjustment of the angle of the detection instrument 4. Based on the height of the differential housing 1, the position of the sliding sleeve 8 on the vertical slide rod 10 is adjusted, thereby changing the vertical position of the detection instrument 4 so that the height of the detection end of the detection instrument 4 is approximately the same as the height of the top surface of the detection cylinder 2.

[0025] In a further embodiment, the first locking member 9 includes a first locking bolt, and the circumferential sidewall of the sliding sleeve 8 is provided with a threaded hole for the first locking stud along its radial direction. When it is necessary to lock the sliding sleeve 8, the first locking bolt is screwed inward into the threaded hole until the end of the first locking bolt away from the nut abuts against the circumferential sidewall of the vertical slide rod 10. At the same time, the nut of the first locking bolt abuts against the outer circumferential sidewall of the sliding sleeve 8, thus locking and fixing the sliding sleeve 8 onto the vertical slide rod 10. When it is necessary to adjust the position of the sliding sleeve 8 on the vertical slide rod 10, the first locking bolt is pulled outward from the threaded hole until the end of the first locking bolt away from the nut is separated from the circumferential sidewall of the vertical slide rod 10, and the nut of the first locking bolt is separated from the outer circumferential sidewall of the sliding sleeve 8. At this time, the sliding sleeve 8 can slide up and down on the vertical slide rod 10 to move the detection instrument 4 to a specified height, and then the sliding sleeve 8 is fixed onto the vertical slide rod 10 by the first locking bolt. Of course, the first locking element 9 can also use other existing technologies.

[0026] In a further embodiment, to facilitate adjustment of the horizontal position of the detection instrument 4, an inverted T-shaped groove 14 is provided on the second base 13, and a T-shaped slider 12 adapted to the T-shaped groove 14 is provided at the bottom of the vertical slide rod 10. The T-shaped slider 12 can slide back and forth in the T-shaped groove 14. A thread adapted to the second locking nut 11 is provided on the outer circumferential side wall at the connection between the lower end of the vertical slide rod 10 and the T-shaped slider 12. The second locking nut 11 locks and fixes the position of the vertical slide rod 10 in the groove 14.

[0027] When it is necessary to fix the position of the vertical slide rod 10 in the slide groove 14, tighten the second locking nut 11 downwards until the lower end face of the second locking nut 11 abuts against the upper surface of the second base 13. At this time, the T-shaped slider 12 can no longer slide in the T-shaped slide groove 14. When it is necessary to adjust the position of the vertical slide rod 10 in the T-shaped slide groove 14, turn the second locking nut 11 upwards until the lower end face of the second locking nut 11 is separated from the upper surface of the second base 13. At this time, the T-shaped slider 12 can slide back and forth in the T-shaped slide groove 14. Move the T-shaped slider 12 to the designated position, and then tighten the second locking nut 11 downwards to fix the position of the vertical slide rod 10 on the second base 13.

[0028] The working principle of the simple detection device for the end face clearance of the bevel gear 16 in the differential subassembly is as follows: During the test, the detection cylinder 2 is placed into the upper shaft diameter hole of the differential housing 1, and a pressure is applied to the upper end face of the detection cylinder 2 to make the bevel gear 16 (half-shaft gear) and the planetary gear 15 fit tightly together. The detection end of the detection instrument 4 is placed at the center position of the upper end face of the detection cylinder 2, and then the planetary shaft 3 is lifted upward (that is, the upper bevel gear 16 is lifted upward). The upper bevel gear 16 drives the detection cylinder 2 to move together, and the value of the detection instrument 4 is read directly. The value is the end face clearance of the bevel gear 16 in the differential subassembly.

[0029] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Any modifications, alterations, alterations, or substitutions made by those skilled in the art to the technical solutions of the present utility model without departing from the spirit of the present utility model shall fall within the protection scope defined by the claims of the present utility model.

Claims

1. A device for detecting the end face clearance of the bevel gear in a differential subassembly, characterized in that: The device includes a detection cylinder (2), a detection instrument (4), and a differential housing (1). The detection cylinder (2) is adapted to the upper shaft diameter hole of the differential housing (1). Two planetary gears (15) are connected to the differential housing (1) through a planetary shaft (3). The two planetary gears (15) mesh with the upper and lower bevel gears (16). During detection, the lower end face of the detection cylinder (2) abuts against the shaft end of the upper bevel gear (16), and the detection end of the detection instrument (4) contacts the upper end face of the detection cylinder (2).

2. The differential subassembly bevel gear end face clearance detection device according to claim 1, characterized in that: The diameter of the detection cylinder (2) is 0.05 mm smaller than the diameter of the upper shaft bore of the differential housing (1).

3. The differential subassembly bevel gear end face clearance detection device according to claim 1, characterized in that: Includes a first base (5), on which a mounting hole is provided that is adapted to the lower shaft diameter end of the differential housing (1).

4. The differential subassembly bevel gear end face clearance detection device according to claim 1, characterized in that: Includes a second base (13), on which a vertical slide rod (10) is provided, on which a sliding sleeve (8) is slidably provided, on which a connecting rod (7) is fixedly provided, and at the end of the connecting rod (7) away from the sliding sleeve (8) the detection instrument (4) is provided, and the sliding sleeve (8) is locked and fixed on the vertical slide rod (10) by a first locking member (9).

5. The differential subassembly bevel gear end face clearance detection device according to claim 4, characterized in that: The first locking member (9) includes a first locking bolt, and the sliding sleeve (8) has a threaded hole adapted to the first locking bolt along its radial direction.

6. The differential subassembly bevel gear end face clearance detection device according to claim 5, characterized in that: The second base (13) is provided with a sliding groove (14), and the bottom of the vertical sliding rod (10) is provided with a slider (12) that is adapted to the sliding groove (14). The outer circumferential side wall at the connection between the lower end of the vertical sliding rod (10) and the slider (12) is provided with a thread that is adapted to the second locking nut (11). The second locking nut (11) locks and fixes the position of the vertical sliding rod (10) in the sliding groove (14).

7. The differential subassembly bevel gear end face clearance detection device according to claim 6, characterized in that: The cross-sectional shape of the groove (14) is T-shaped, and the cross-sectional shape of the slider (12) is T-shaped.

Images