CN210218625U

CN210218625U - Main reducer assembly for preventing leakage at flange nut

Info

Publication number: CN210218625U
Application number: CN201920967560.2U
Authority: CN
Inventors: Tianbing Chen; 陈田兵; Jianwen Rao; 饶剑文
Original assignee: Jiangxi Jiangling Chassis Co Ltd
Current assignee: Jiangxi Jiangling Chassis Co Ltd
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2020-03-31
Anticipated expiration: 2029-06-26

Abstract

The utility model relates to a prevent main reducer assembly of flange nut department seepage, including the driving gear, set up the inner bearing in the driving gear top, be located the inner bearing adjusting shim between inner bearing and the driving gear, the inboard of inner bearing is equipped with the elasticity spacer, and the top of elasticity spacer is equipped with the outer bearing, and the outside of outer bearing is equipped with the driving gear flange, driving gear flange's top installation flange nut, the inner circle, the inner bearing adjusting shim, the driving gear of flange nut, driving gear flange, outer bearing closely laminate and form inner seal anti-seepage structure. Before the assembly according to the design requirements, two adhesive tapes are symmetrically and axially coated at 180 degrees by using thread sealant at the internal thread of a flange nut or the external thread of a driving gear, and the length is about 15mm so as to prevent the leakage at the thread.

Description

Main reducer assembly for preventing leakage at flange nut

Technical Field

The utility model belongs to the technical field of automobile parts design and specifically relates to a prevent main reducer assembly of flange nut department seepage.

Background

Some rear axle assemblies with large input torque requirements often leak gear oil at the final drive assembly flange nut during durability road testing, causing complaints. Such problems often plague rear axle assembly design engineers, and it is important to ensure that the flange nut of the final drive assembly is free from leakage through innovative design of parts. For some rear axle assemblies with large input torque requirements, when the endurance test is carried out, the end faces of the bearing adjusting gaskets in the existing main reducer assembly are often abnormally abraded, so that gear oil leaks from the end faces of the flange nuts.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defect that prior art exists, provide a main reducer assembly of preventing leakage of flange nut department.

In order to realize the purpose, the utility model discloses a technical scheme as follows:

the utility model provides a prevent main reducer assembly of flange nut department seepage, includes the driving gear, sets up the inner bearing in the driving gear top, is located the inner bearing adjusting shim between inner bearing and the driving gear, and the inboard of inner bearing is equipped with the elasticity spacer, and the top of elasticity spacer is equipped with the outer bearing, and the outside of outer bearing is equipped with the driving gear flange, and the flange nut is installed to the top of driving gear flange, the inner circle of flange nut, driving gear flange, outer bearing, elasticity spacer, inner ring, inner bearing adjusting shim, driving gear of inner bearing closely laminate and form interior sealing seepage prevention structure.

Foretell main reducer assembly of prevention flange nut department seepage, before the main reducer assembly, at flange nut internal thread department or the external screw thread department of driving gear with 180 axial scribbles of screw thread sealed glue symmetry and establishes two adhesive tapes, length is about 15mm, prevents the seepage of screw thread department.

According to the main reducer assembly for preventing the leakage at the flange nut, the vulcanized rubber is added to the end face of the flange nut, and when the bearing is pre-tightened, the vulcanized rubber on the end face of the flange nut is compressed to form sealing between the end face of the flange nut and the end face of the flange of the driving gear.

According to the main reducer assembly capable of preventing leakage at the flange nut, the inner bearing adjusting gasket is made of medium carbon steel and is subjected to quenching and tempering, and two end faces of the elastic spacer sleeve are subjected to quenching treatment.

The utility model has the advantages that: an inner sealing anti-seepage structure is formed by tightly attaching a flange nut, a driving gear flange, an inner ring of an outer bearing, an elastic spacer bush, an inner ring of an inner bearing, an inner bearing adjusting gasket and a driving gear. Before the assembly according to the design requirements, two adhesive tapes are symmetrically and axially coated at 180 degrees by using thread sealant at the internal thread of a flange nut or the external thread of a driving gear, and the length is about 15mm so as to prevent the leakage at the thread.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the elastic spacer of the present invention;

fig. 3 is a schematic view of the flange nut of the present invention.

Detailed Description

As shown in fig. 1, a main reducer assembly for preventing leakage at a flange nut includes a driving gear 1, an inner bearing 2 disposed above the driving gear 1, an inner bearing adjusting spacer 3 disposed between the inner bearing 2 and the driving gear 1, an elastic spacer 4 disposed inside the inner bearing 2, an outer bearing 5 disposed above the elastic spacer 4, a driving gear flange 6 disposed outside the outer bearing 5, a flange nut 7 mounted above the driving gear flange 6, the flange nut 7, the driving gear flange 6, an inner ring of the outer bearing 5, the elastic spacer 4, an inner ring of the inner bearing 2, the inner bearing adjusting spacer 3, and the driving gear 1 closely attached to form an inner sealing leakage-proof structure.

As shown in figure 3, as a further improvement of the present invention, before the assembly of the main reducer assembly, two adhesive tapes 8 are axially coated on the internal thread of the flange nut 7 or the external thread of the driving gear 1 by thread sealant at 180 degrees, the length is about 15mm, and the leakage at the thread is prevented.

Vulcanized rubber 9 is added on the end surface of the flange nut 7, and when the bearing is pre-tightened, the vulcanized rubber 9 on the end surface of the flange nut 7 is compressed to form sealing between the end surface of the flange nut and the end surface of the driving gear flange 6.

As shown in FIG. 2, the inner bearing adjusting shim 3 is made of medium carbon steel and is subjected to quenching and tempering, and the two end faces of the elastic spacer 4 are subjected to quenching treatment.

The improvement can prevent the leakage of the flange nut of the main speed reducer assembly.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a prevent main reducer assembly of flange nut department seepage, includes the driving gear, sets up the inner bearing in the driving gear top, is located the inner bearing adjustment gasket between inner bearing and the driving gear, and the inboard of inner bearing is equipped with the elasticity spacer, and the top of elasticity spacer is equipped with the outer bearing, and the outside of outer bearing is equipped with the driving gear flange, and the flange nut is installed to the top of driving gear flange, its characterized in that, flange nut, driving gear flange, the inner circle of outer bearing, elasticity spacer, the inner circle of inner bearing, inner bearing adjustment gasket, driving gear closely laminate and form the leak protection structure of inner seal.

2. The main reducer assembly for preventing the leakage of the flange nut as claimed in claim 1, wherein two strips of glue are symmetrically coated by a thread sealant at 180 ° axially at the internal thread of the flange nut or the external thread of the driving gear before the main reducer assembly is assembled, so as to prevent the leakage of the thread.

3. The final drive assembly of claim 1, wherein the flange nut end surface is reinforced with vulcanized rubber, and when the bearing is pre-tightened, the end surface of the flange nut is compressed to form a seal between the end surface of the flange nut and the end surface of the flange of the drive gear.

4. The main reducer assembly preventing the leakage of the flange nut as recited in claim 1, wherein the inner bearing adjusting shim is made of medium carbon steel and is subjected to quenching and tempering, and the two end faces of the elastic spacer are subjected to quenching treatment.