CN218670571U

CN218670571U - Drive axle main reducer shell structure

Info

Publication number: CN218670571U
Application number: CN202223338434.1U
Authority: CN
Inventors: 张晓林
Original assignee: Qingdao Bohongsheng Machinery Co ltd
Current assignee: Qingdao Bohongsheng Machinery Co ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-03-21
Anticipated expiration: 2032-12-12

Abstract

The utility model discloses a transaxle main reducer shell structure relates to reduction gear technical field, technical scheme does, including the inside shell of seting up the cavity, the cavity of shell includes the gear cavity, and be located the input shaft cavity of gear cavity one side, the output port hole that link up is seted up to the gear cavity both sides of shell, input shaft cavity one side is seted up the input port hole, input port hole and output port hole become "T" font structural distribution, input shaft cavity one side intercommunication gear cavity, the opposite side passes through input port hole and the outside intercommunication of shell, the week side in input shaft cavity sets up lubricating circuit, lubricating circuit one end intercommunication gear cavity, the other end communicates the input shaft cavity. The beneficial effects of the utility model are that, this application increases lubricated oil circuit at transaxle main reducer casing, with the help of lubricated oil circuit intercommunication gear cavity and input shaft chamber. The bearing can be fully lubricated, and the heating of the bearing is avoided.

Description

Drive axle main reducer shell structure

Technical Field

The utility model relates to a reduction gear technical field specifically is a transaxle main reducer shell structure.

Background

The main speed reducer is a main component for reducing the rotating speed and increasing the torque in the automobile transmission system. For a vehicle with a longitudinal engine, the final drive also utilizes bevel gear transmission to change the direction of power. After the transmission speed is reduced by the main speed reducer, relatively high output torque can be obtained, and therefore large driving force can be obtained.

The rigidity and the strength of the shell of the main speed reducer of the automobile drive axle determine the service life of the drive axle, and the shell is the most important part in the whole axle. In the actual work of the main reducer, the lubricating oil splashed by the bevel gear transmission enters between the bearing and the oil seal, no channel flows back, and the heat of the bearing cannot be taken away, so that the bearing is heated and is damaged too early; in addition, the lubricating oil generates certain pressure, and oil leakage is easy to occur at the oil seal.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a transaxle main reducer shell structure solves the bearing and generates heat and leads to the problem of premature failure and oil blanket oil leak.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a transaxle main reducer shell structure, includes the inside shell of seting up the cavity, the cavity of shell includes the gear cavity, and is located the input shaft chamber of gear cavity one side, the output port hole that link up is seted up to the gear cavity both sides of shell, and the input port hole is seted up to input shaft chamber one side, input port hole and output port hole become "T" font structure and distribute, input shaft chamber one side intercommunication gear cavity, the opposite side passes through input port hole and the outside intercommunication of shell, the week side in input shaft cavity sets up lubricated oil circuit, and lubricated oil circuit one end intercommunication gear cavity, the other end intercommunication input shaft cavity.

Preferably, the projections of the axes of the input end hole and the output end hole on the vertical plane are vertical.

Preferably, a sleeve is arranged in the gear chamber, the inner diameter of the sleeve corresponds to the aperture of the output end hole, and the sleeve is sleeved outside the output shaft of the main speed reducer;

a plurality of reinforcing plates are arranged between the outer wall of the sleeve and the inner wall of the gear chamber, and the reinforcing plates are radially arranged by taking the axis of the output end hole as a central axis.

Preferably, the shell comprises two buckled half parts, the peripheral walls of the two half parts are provided with a plurality of screw holes, and the two half parts are fixedly connected through bolts;

the number of the reinforcing plates is less than or equal to that of the screw holes, and the center line of each reinforcing plate is aligned with the axis of one screw hole.

Preferably, the number of the lubricating oil passages is a plurality, the lubricating oil passages take the axis of the input shaft cavity as a shaft, and the lubricating oil passages are uniformly distributed in the peripheral wall of the input shaft cavity in a circumferential array mode.

Preferably, one end of the input shaft cavity close to the gear cavity is taken as the upper end, and the input shaft cavity is divided into an upper cavity, a middle cavity and a lower cavity from top to bottom;

the inner diameter of the cavity of the middle cavity is smaller than the inner diameters of the cavities of the upper cavity and the lower cavity.

Preferably, the lubricating oil path is provided with an upper port, a middle port and a lower port, the upper port is communicated with the lower part of the gear cavity, the middle port is communicated with the middle cavity of the input shaft cavity, and the lower port is communicated with the lower cavity of the input shaft cavity.

Compared with the prior art, the method has the following beneficial effects: this application increases lubricated oil circuit at transaxle main reducer casing, with the help of lubricated oil circuit intercommunication gear cavity and input shaft chamber. The bearing can be fully lubricated, and the heating of the bearing is avoided. In addition, because a lubricating oil way is added, the internal pressure of the main speed reducer is reduced, and the problem of oil leakage can be effectively avoided.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

fig. 4 is an enlarged view of the structure of the lubrication oil path according to the embodiment of the present invention.

In the figure:

1. a housing; 11. a gear chamber; 12. an input shaft cavity; 13. an output port hole; 14. an input end hole; 15. a lubrication oil path; 151. a horizontal pipeline; 16. a sleeve; 17. a reinforcing plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-4, the present invention provides the following technical solutions:

the utility model provides a transaxle main reducer shell structure, shell 1 including inside seting up the cavity, the cavity of shell 1 includes gear cavity 11, and be located the input shaft chamber 12 of gear cavity 11 one side, the output port hole 13 that link up is seted up to the gear cavity 11 both sides of shell 1, input port hole 14 is seted up to input shaft cavity 12 one side, input port hole 14 and output port hole 13 become "T" font structure and distribute, input shaft cavity 12 one side intercommunication gear cavity 11, the opposite side passes through input port hole 14 and the outside intercommunication of shell 1, the week side of input shaft cavity 12 sets up lubricated

oil circuit

15, 15 one end intercommunication gear cavity 11 of lubricated oil circuit, the other end communicates input shaft cavity 12.

The projections of the axes of the input end hole 101 and the output end hole 102 on the vertical plane are perpendicular.

A sleeve 16 is arranged in the gear chamber 11, the inner diameter of the sleeve 16 corresponds to the aperture of the output end hole 13, and the sleeve 16 is sleeved outside the output shaft of the main speed reducer;

a plurality of reinforcing plates 17 are arranged between the outer wall of the sleeve 16 and the inner wall of the gear chamber 11, and the reinforcing plates 17 are radially arranged by taking the axis of the output end hole 13 as a central axis.

The shell 1 comprises two buckled half parts, the peripheral walls of the two half parts are provided with a plurality of screw holes 16, and the two half parts are fixedly connected through bolts;

the number of the reinforcing plates 17 is equal to or less than the number of the screw holes 16, and the center line of each reinforcing plate is aligned with the axis of one screw hole 16.

The lubricating oil paths 15 are arranged in a plurality of numbers, the lubricating oil paths 15 take the axis of the input shaft cavity 12 as a shaft, and the lubricating oil paths are uniformly distributed in the circumferential wall of the input shaft cavity 12 in a circumferential array mode.

The end of the input shaft cavity 12 close to the gear cavity 11 is taken as the upper end, and the input shaft cavity 12 is divided into an upper cavity, a middle cavity and a lower cavity from top to bottom;

the lumen inner diameter of the middle lumen is less than the lumen inner diameters of the upper and lower lumens.

Through the lubricated oil circuit 15 that increases intercommunication gear cavity 11 and input shaft chamber 12 in this scheme, can fully lubricate two bearings that support the inside support bevel gear of main reduction, avoid the bearing to generate heat. The oil pressure at the oil seal can be prevented from rising, the oil leakage phenomenon is avoided, and the oil seal is the oil seal of the bevel gear connecting flange.

This scheme adopts the mode that increases moist Hua Kong, increases after the lubrication hole, can make the lubricating oil that splashes flow away through the lubrication hole behind the lubricated bearing, has formed an oil cycle. Therefore, on one hand, the lubricating oil takes away the heat of the bearing and cools the bearing, thereby prolonging the service life of the bearing; on the other hand, the oil leakage phenomenon caused by high oil pressure at the oil seal position is solved.

Example 2

Referring to fig. 4, on the basis of embodiment 1, the lubricating oil passage 15 is provided with three ports, namely, an upper port, a middle port and a lower port, the upper port is communicated with the lower portion of the gear chamber 11, the middle port is communicated with the middle cavity of the input shaft cavity 12, and the lower port is communicated with the lower cavity of the input shaft cavity 12.

The upper port of the lubricating oil passage 15 communicates with the gear chamber 11 in the vertical direction, forming a vertical passage that communicates with the gear chamber 11.

The middle port of the lubricating oil path 15 is communicated with the middle cavity through a horizontal pipeline 151, one end of the horizontal pipeline 151 is communicated with the middle cavity, and the other end of the horizontal pipeline 151 is communicated with a main passage of the lubricating oil path 15;

the axis of the horizontal pipe 15 is arranged horizontally.

The lower port of the lubricating oil path 15 is communicated with the lower cavity at an inclined angle, and the lower part of the lubricating oil path 15 is in an arc-shaped path structure in smooth transition.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a transaxle main reducer shell structure, includes inside shell (1) of seting up the cavity, the cavity of shell (1) includes gear cavity (11), and is located input shaft cavity (12) of gear cavity (11) one side, output port hole (13) that link up are seted up to gear cavity (11) both sides of shell (1), and input port hole (14) are seted up to input shaft cavity (12) one side, input port hole (14) and output port hole (13) become "T" font structure and distribute, and input shaft cavity (12) one side intercommunication gear cavity (11), opposite side pass through input port hole (14) and shell (1) outside intercommunication, its characterized in that, the week side of input shaft cavity (12) sets up lubricated oil circuit (15), and lubricated oil circuit (15) one end intercommunication gear cavity (11), other end intercommunication input shaft cavity (12).

2. The transaxle final drive casing structure according to claim 1, wherein projections of axes of the input end hole and the output end hole on a vertical plane are perpendicular.

3. The drive axle final drive casing structure according to claim 1, characterized in that a sleeve (16) is arranged inside the gear chamber (11), the inner diameter of the sleeve (16) corresponds to the aperture of the output end hole (13), and the sleeve (16) is sleeved outside the output shaft of the final drive;

a plurality of reinforcing plates (17) are arranged between the outer wall of the sleeve (16) and the inner wall of the gear chamber (11), and the reinforcing plates (17) are radially arranged by taking the axis of the output end hole (13) as a central axis.

4. The drive axle final drive shell structure according to claim 3, wherein the housing (1) comprises two half parts which are buckled with each other, the peripheral walls of the two half parts are provided with a plurality of screw holes, and the two half parts are fixedly connected through bolts;

the number of the reinforcing plates (17) is less than or equal to the number of the screw holes, and the center line of each reinforcing plate is aligned with the axis of one screw hole.

5. A drive axle final drive casing structure according to any one of claims 1 to 4, characterized in that, a plurality of lubricating oil paths (15) are provided, the lubricating oil paths (15) take the axis of the input shaft cavity (12) as the shaft, and are uniformly distributed in the circumferential wall of the input shaft cavity (12) in a circumferential array.

6. The drive axle final drive casing structure according to any one of claims 1 to 4, characterized in that, taking the end of the input shaft cavity (12) close to the gear cavity (11) as the upper end, the input shaft cavity (12) is divided into an upper cavity, a middle cavity and a lower cavity from top to bottom;

7. The transaxle final drive casing structure according to claim 6, wherein the lubricating oil passage (15) is provided with three ports, an upper port communicating with a lower portion of the gear chamber (11), a middle port communicating with a middle chamber of the input shaft chamber (12), and a lower port communicating with a lower chamber of the input shaft chamber (12).

8. A transaxle final drive casing structure according to claim 7, wherein an upper port of the lubricating oil passage (15) communicates with the gear chamber (11) in a vertical direction, forming a vertical passage communicating with the gear chamber (11).

9. The transaxle final drive housing structure according to claim 7, wherein a middle port of the lubricating oil passage (15) communicates with the middle chamber through a horizontal pipe (151), one end of the horizontal pipe (151) communicates with the middle chamber, and the other end communicates with a main passage of the lubricating oil passage (15);

the axis of the horizontal pipeline (151) is horizontally arranged.

10. The transaxle final drive housing structure according to claim 7, wherein a lower port of the lubricating oil passage (15) communicates with the lower chamber at an oblique angle, and a lower portion of the lubricating oil passage (15) is formed in an arc-shaped passage structure that transitions smoothly.