Bevel gear

Abstract

The utility model discloses a bevel gear belongs to drive technical field. Including gear body, the gear body has umbrella tooth part and axle part, the gear body is in and is set up with containing cavity, front sealing area and rear sealing area, the containing cavity is located between front sealing area and rear sealing area, the axle part is set up with a plurality of oil hole and auxiliary hole that communicate with containing cavity along the axial direction, the utility model discloses a bevel gear has solved the existing structure under the long -term high temperature, high pressure and silt erosion environment and easily ageing failure, cause lubricating oil leakage or pollutant invasion, and then aggravate the technical problem of gear and bearing wear.

Description

Technical Field

[0001] This utility model relates to the field of transmission technology, specifically to a bevel gear. Background Technology

[0002] In modern automotive drivetrain systems, the differential, as a core component of the drive axle, plays a crucial role in distributing power from the drive shaft to the left and right half-shafts and allowing the drive wheels on both sides to rotate at different speeds when turning or driving on uneven surfaces. This mechanism effectively avoids abnormal tire wear, handling instability, and power loss caused by tire slippage friction, and is an important technological foundation for ensuring vehicle driving safety, stability, and fuel economy.

[0003] Traditional differentials generally employ a bevel gear structure, which consists of a core pair of meshing drive and driven bevel gears, as well as a planetary gear set and half-shaft gears housed within the differential housing. The drive bevel gear receives engine output torque via a drive shaft, reduces speed and increases torque through the final drive reduction ratio, and then drives the driven bevel gear, thereby rotating the entire differential housing. Driven by the housing, the planetary gears automatically adjust torque distribution based on the difference in resistance between the left and right wheels, achieving the differential function.

[0004] The bevel gear meshing area is located inside the differential housing, requiring a continuous and sufficient lubricating oil film to reduce friction and temperature rise. However, the differential housing needs to be dynamically connected to components such as half-shafts and bearing housings, resulting in multiple sealing interfaces and relative movement. Existing structures are prone to aging and failure under long-term high temperature, high pressure, and mud and water corrosion environments, causing lubricating oil leakage or contaminant intrusion, which in turn accelerates gear and bearing wear.

[0005] Therefore, it is necessary to provide a bevel gear to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned problems in the prior art, the purpose of this utility model is to provide a bevel gear to solve the problems mentioned in the background art.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a bevel gear, including a gear body, the gear body having a bevel tooth portion and a shaft portion, and a receiving cavity, a front sealing area and a rear sealing area are provided in the gear body, the receiving cavity being located between the front sealing area and the rear sealing area; The shaft portion has several oil holes and auxiliary holes that communicate with the receiving cavity along the axial direction.

[0008] Furthermore, the shaft portion is provided with a short groove and a long groove, the long groove being close to the rear sealing area, and an oil hole being provided in both the short groove and the long groove.

[0009] Furthermore, the shaft portion is provided with spline teeth at intervals along the circumference.

[0010] Furthermore, the beveled tooth portion has several teeth distributed circumferentially, with the included angle between the inner ends of two symmetrical teeth being the inner angle and the included angle between the outer ends being the outer angle, and the inner angle being smaller than the outer angle.

[0011] The beneficial effects of this utility model are as follows: The bevel gear provided by this utility model has several oil holes and auxiliary holes, which allow lubricating oil to be filled between the spline teeth and the spline sleeve. During rotation, lubricating oil continuously overflows from the receiving cavity, continuously lubricating the spline sleeve and the spline teeth, thereby reducing the friction during transmission. This solves the technical problem that the existing structure is prone to aging and failure under long-term high temperature, high pressure and mud and water erosion, resulting in lubricating oil leakage or contaminant intrusion, which in turn aggravates the wear of gears and bearings.

[0012] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0013] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall design of this utility model; The following are the labeling elements in the figure: 1. Gear body; 101. Receiving cavity; 102. Front sealing area; 103. Rear sealing area; 11. Bevel gear; 111. Tooth; 12. Shaft; 13. Spline tooth; 14. Oil hole; 14a. First oil hole; 14b. Second oil hole; 14c. Third oil hole; 15. Auxiliary hole; 15a. First auxiliary hole; 15b. Second auxiliary hole; 15c. Third auxiliary hole; 15d. Fourth auxiliary hole; 16. Short slot; 17. Long slot; a. Inner angle; b. Outer angle. Detailed Implementation

[0014] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0015] To enable those skilled in the art to better understand the present invention, 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0016] like Figure 1 As shown, the present invention provides a technical solution: a bevel gear, including a gear body 1, the gear body 1 having a bevel tooth portion 11 and a shaft portion 12, and the gear body 1 having a receiving cavity 101, a front sealing area 102 and a rear sealing area 103, the receiving cavity 101 being located between the front sealing area 102 and the rear sealing area 103. The shaft portion 12 has several oil holes 14 and auxiliary holes 15 that communicate with the receiving cavity 101 along the axial direction.

[0017] Oil hole 14 includes first oil hole 14a, second oil hole 14b and third oil hole 14c, auxiliary hole 15 includes first auxiliary hole 15a, second auxiliary hole 15b, third auxiliary hole 15c and fourth auxiliary hole 15d, and the shaft portion 12 is arranged from left to right as follows: first oil hole 14a, first auxiliary hole 15a, second oil hole 14b, second auxiliary hole 15b, third oil hole 14c, third auxiliary hole 15c and fourth auxiliary hole 15d.

[0018] The shaft portion 12 has a short groove 16 and a long groove 17. The long groove 17 is close to the rear sealing area 103. An oil hole 14 is provided in both the short groove 16 and the long groove 17. The second oil hole 14b is located in the short groove 16, and the third oil hole 14c is located in the long groove 17.

[0019] The shaft portion 12 is provided with spline teeth 13 at intervals along the circumference.

[0020] The beveled part 11 has several teeth 111 distributed circumferentially. The included angle between the inner ends of two symmetrical teeth 111 is the inner angle a, and the included angle between the outer ends is the outer angle b. The inner angle a is smaller than the outer angle b.

[0021] In one embodiment, the working principle of the bevel gear

[0022] Specifically, the gear body 1 has a spline sleeve on the shaft 12, and plugs are installed in the front sealing area 102 and the rear sealing area 103 to seal the receiving cavity 101. The plug in the rear sealing area 103 is removed, and lubricating oil is injected into the receiving cavity 101. After the cavity is filled, the plug in the rear sealing area 103 is blocked. During rotation, lubricating oil overflows from oil hole 14 and auxiliary hole 15 to the connection between the shaft 12 and the spline sleeve. As the gear body 1 rotates, the lubricating oil is dispersed to each spline tooth 13 under the influence of gravity, making it difficult for the lubricating oil to leak outwards. At the same time, it can also prevent external contaminants from entering the receiving cavity 101 and contaminating the lubricating oil. The short groove 16 and long groove 17 can form a certain distance with the spline sleeve to facilitate the connection between the spline sleeve and the shaft 12.

[0023] In summary, this gear, by providing several oil holes 14 and auxiliary holes 15, allows lubricating oil to be filled between the spline teeth 13 and the spline sleeve. During rotation, lubricating oil continuously overflows from the receiving cavity 101, providing continuous lubrication between the spline sleeve and the spline teeth 13. This reduces friction during transmission and solves the technical problem that existing structures are prone to aging and failure under long-term high temperature, high pressure, and mud and water erosion environments, resulting in lubricating oil leakage or contaminant intrusion, which in turn aggravates the wear of gears and bearings.

[0024] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A bevel gear, characterized in that: Includes a gear body (1), the gear body (1) having a bevel gear portion (11) and a shaft portion (12), the gear body (1) having a receiving cavity (101), a front sealing area (102) and a rear sealing area (103) inside the gear body (1), the receiving cavity (101) being located between the front sealing area (102) and the rear sealing area (103); The shaft (12) is provided with several oil holes (14) and auxiliary holes (15) that communicate with the receiving cavity (101) along the axial direction.

2. The bevel gear according to claim 1, characterized in that: The shaft (12) is provided with a short groove (16) and a long groove (17). The long groove (17) is close to the rear sealing area (103). An oil hole (14) is provided in both the short groove (16) and the long groove (17).

3. The bevel gear according to claim 1, characterized in that: The shaft (12) is provided with spline teeth (13) at intervals along the circumference.

4. The bevel gear according to claim 1, characterized in that: The beveled part (11) has a number of teeth (111) distributed circumferentially. The included angle between the inner ends of two symmetrical teeth (111) is an inner angle (a) and the included angle between the outer ends is an outer angle (b). The inner angle (a) is smaller than the outer angle (b).

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