CN212959788U

CN212959788U - Oil lubrication structure of drive axle main reducer

Info

Publication number: CN212959788U
Application number: CN202021262398.3U
Authority: CN
Inventors: 吴志强; 杨鹏飞; 李春光; 刘爱萍
Original assignee: Guangdong Fuwa Heavy Industry Co Ltd
Current assignee: Guangdong Fuwa Heavy Industry Co Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-04-13
Anticipated expiration: 2030-06-30

Abstract

An oil lubrication structure of a drive axle main speed reducer comprises a shell, a transmission shaft and two bearings, wherein the shell comprises two opposite end walls and a side wall connected between the two end walls, the two end walls and the side wall enclose a cavity, convex ribs extending towards the interior of the cavity are respectively arranged on the two side walls, the two convex ribs and the side wall enclose an installation cavity respectively, and the two bearings are respectively arranged in the installation cavity; each convex rib is at least provided with an oil guide hole, one end of the oil guide hole on each convex rib extends to the outer surface of the convex rib to be communicated with the cavity, the other end of the oil guide hole on each convex rib extends to the end surface of the bearing positioned in the convex rib, and two ends of the transmission shaft are respectively connected in the two bearings in a penetrating mode. The utility model discloses a lead the oilhole and collect lubricating oil and lubricate the bearing, need not to set up the oil collecting cover in the bearing periphery, simplified main reducer's structure, simultaneously, also need not to set up built-in oil duct on the end wall of casing and lateral wall, simplified the casting process of casing.

Description

Oil lubrication structure of drive axle main reducer

Technical Field

The utility model relates to the technical field of vehicles, concretely relates to oil lubrication structure of transaxle reduction gear.

Background

The main reducer is a main part of a vehicle drive axle, the main reducer generally comprises a shell and a transmission gear arranged in the shell, the transmission gear is in pivot fit with the shell through a bearing, generally, in order to lubricate the gear, lubricating oil in the main reducer needs to be distributed into the bearing, an oil collecting cover arranged on the periphery of a gear shaft is required to be arranged on the shell of the main reducer, and meanwhile, a built-in oil duct is required to be arranged on the shell, so that the lubricating oil can be collected in the oil collecting cover to meet the lubricating requirement of the bearing; because the casing is generally through casting process shaping, set up built-in oil duct in the casing, lead to the casting process comparatively complicated, simultaneously, set up the oil collecting cover and need adopt the bolt fastening to need set up the gasket and assemble when the assembly, make main reducer's structure comparatively complicated, then increase the degree of difficulty of assembly.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a drive axle main reducer oil lubrication structure, which can simplify the casting process of the main reducer casing and simplify the structure of the main reducer.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an oil lubrication structure of a drive axle main speed reducer comprises a shell, a transmission shaft and two bearings, wherein the shell comprises two opposite end walls and a side wall connected between the two end walls, the two end walls and the side wall enclose a cavity, convex ribs extending towards the interior of the cavity are respectively arranged on the two side walls, the two convex ribs and the side wall enclose an installation cavity respectively, and the two bearings are respectively arranged in the installation cavity; each convex rib is at least provided with an oil guide hole, one end of the oil guide hole on each convex rib extends to the outer surface of the convex rib to be communicated with the cavity, the other end of the oil guide hole on each convex rib extends to the end surface of the bearing positioned in the convex rib, and two ends of the transmission shaft are respectively connected in the two bearings in a penetrating mode.

A transmission gear is mounted on the transmission shaft, a through groove is formed between the two convex ribs, and the transmission gear is opposite to the through groove.

The outer surface of the convex rib, the inner surface of the side wall and the inner surface of the end wall enclose an oil guide groove, the inner side end of the oil guide groove forms an opening communicated with the cavity, and one end of the oil guide hole is communicated with the outer side end of the oil guide groove.

Each convex rib is provided with two oil guide holes.

One of the end walls is provided with a mounting hole, a mounting cavity corresponding to the one of the end walls is arranged opposite to the mounting hole, and an end cover is fixed on the one of the end walls through a bolt.

The beneficial effects of the utility model reside in that:

when the main reducer of the drive axle works, a transmission gear in the main reducer rotates, lubricating oil is stirred along with the rotation of the gear, and then the lubricating oil can be conveyed to the end face of the bearing through the oil guide hole, so that the lubricating oil can enter the bearing from the gap of the bearing to lubricate the bearing.

Drawings

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

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

fig. 3 is a schematic structural view of the housing in fig. 1.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments:

as shown in fig. 1, 2 and 3, for the oil lubrication structure of a main speed reducer of a drive axle of the present invention, the oil lubrication structure includes a housing 10, a transmission shaft 20, a bearing 41 and a bearing 42, wherein the housing includes an end wall 11, an end wall 12 and a side wall 13, the end wall 11 and the end wall 12 are disposed opposite to each other, the side wall 13 is connected between the end wall 11 and the end wall 12, and a chamber is defined by the end wall 11, the end wall 12 and the side wall 13, and the chamber is an inner cavity of the housing 10; a convex rib 31 is convexly arranged from the inner surface of the end wall 11 to the middle of the cavity, a convex rib 32 is convexly arranged from the inner surface of the end wall 12 to the middle of the cavity, the convex rib 31 and the convex rib 32 are both arc-shaped, and the positions of the side wall 13 corresponding to the convex rib 31 and the convex rib 32 are arc-shaped, so that the convex rib 31 and the side wall 13 enclose a circular mounting cavity 301, the convex rib 32 and the side wall 13 enclose a circular mounting cavity 302, the bearing 41 is arranged in the mounting cavity 301, the outer ring of the bearing 41 is fixedly matched with the inner wall of the mounting cavity 301, the bearing 42 is arranged in the mounting cavity 302, the outer ring of the bearing 42 is fixedly matched with the inner wall of the mounting cavity 302, two ends of the transmission shaft 20 are respectively connected in the bearing 41 and the bearing 42 in a penetrating manner, and two ends of the transmission shaft 20 are respectively fixedly matched with the inner; two oil guide holes 311 are arranged on the convex rib 31, one end of each oil guide hole 311 extends to the outer surface of the convex rib 31 and is communicated with the cavity, and the other end of each oil guide hole 311 extends to the inner surface of the convex rib 31 and is positioned on the end surface of the bearing 41; similarly, two oil guiding holes 321 are provided on the rib 32, one end of each oil guiding hole 321 extends to the outer surface of the rib 32 and communicates with the chamber, and the other end extends to the inner surface of the rib 32 and is located at the end surface of the bearing 42.

The utility model discloses in, install a transmission gear 21 on the transmission shaft 20, form a logical groove 33 between protruding muscle 31 and protruding muscle 32, transmission gear 21 is just to leading to the groove 33 setting, makes transmission gear 21 can contact more lubricating oil in the cavity when rotating, makes more lubricating oil can get into under transmission gear 21's stirring and leads oilhole 311 and lead oilhole 312 then.

In the utility model, can also utilize the surface of protruding muscle 31, the internal surface of lateral wall 13 and the internal surface of end wall 11 enclose into one and lead oil groove 312, should lead oil groove 312 and form the opening and communicate with the cavity at the one end towards the cavity inboard, the outside end of leading oil groove 312 is the internal surface of end wall 11, lead oil hole 311 and be set up in the position department that leans on the end wall 11 internal surface, and lead one end of oil hole 311 and communicate in the outside end of leading oil groove 312, like this, when lubricating oil moves along with the tooth drive wheel, it is following the direction flow that leads oil groove 312 to be close to end wall 11, under end wall 11 blocks, collect the lubricating oil that splashes to end wall 11 internal surface through leading oil hole 311, lubricate bearing 41; similarly, the outer surface of the rib 32, the inner surface of the side wall 13 and the inner surface of the end wall 12 define an oil guide groove 322, one end of the oil guide hole 32 is communicated with the outer end of the oil guide groove 312, the lubricating oil flows along the oil guide groove 322 toward the direction close to the end wall 12 and is blocked by the end wall 12, and the lubricating oil from the aircraft to the inner surface of the end wall 12 is collected through the oil guide hole 321 to lubricate the bearing 42.

In the structure as above, the utility model discloses all set up two oil guide holes on each protruding muscle, what need explain in fact is, all set up one on every protruding muscle and lead the oilhole and can realize lubricating the collection of lubricating oil in order to lubricate the bearing, of course, also can be set up the more oil guide holes of quantity on protruding muscle to satisfy higher lubrication requirement.

In order to facilitate the installation, the utility model discloses set up a mounting hole on end wall 11, installation cavity 301 corresponds and just to setting up with this mounting hole, has a cover 50 at end wall 11 outside through the bolt fastening, and this end wall 50 covers bearing 41 in installation cavity 301, during the installation, can pack into casing 10 with transmission shaft 20 by the mounting hole on end wall 11.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still make modifications to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some technical features, and these modifications or substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An oil lubrication structure of a drive axle main speed reducer is characterized by comprising a shell, a transmission shaft and two bearings, wherein the shell comprises two opposite end walls and a side wall connected between the two end walls, the two end walls and the side wall form a cavity in an enclosing mode, convex ribs extending towards the interior of the cavity are arranged on the two side walls respectively, an installation cavity is formed by the two convex ribs and the side wall in an enclosing mode respectively, and the two bearings are arranged in the installation cavity respectively; each convex rib is at least provided with an oil guide hole, one end of the oil guide hole on each convex rib extends to the outer surface of the convex rib to be communicated with the cavity, the other end of the oil guide hole on each convex rib extends to the end surface of the bearing positioned in the convex rib, and two ends of the transmission shaft are respectively connected in the two bearings in a penetrating mode.

2. The oil lubrication structure of a drive axle final drive according to claim 1, wherein a transmission gear is mounted on the transmission shaft, a through groove is formed between the two ribs, and the transmission gear is disposed opposite to the through groove.

3. An oil lubricating structure of a drive axle main reducer according to claim 1, wherein the outer surface of the rib, the inner surface of the side wall, and the inner surface of the end wall define an oil guide groove, the inner end of the oil guide groove forms an opening communicating with the chamber, and one end of the oil guide hole communicates with the outer end of the oil guide groove.

4. The oil lubricating structure of a transaxle final drive according to claim 1, wherein each of the ribs is provided with two oil guide holes.

5. The oil lubricating structure of a transaxle final drive according to claim 1, wherein a mounting hole is provided in one of the end walls, a mounting cavity corresponding to the one of the end walls is provided to face the mounting hole, and an end cover is fixed to the one of the end walls by a bolt.