CN201056162Y

CN201056162Y - Full time transfer gear of vehicle

Info

Publication number: CN201056162Y
Application number: CNU2007200858643U
Authority: CN
Inventors: 汪振晓; 廖海明
Original assignee: Dongfeng Motor Corp
Current assignee: Dongfeng Motor Corp
Priority date: 2007-07-13
Filing date: 2007-07-13
Publication date: 2008-05-07
Anticipated expiration: 2017-07-13

Abstract

The utility model discloses a vehicle full-time transfer case, which comprises a housing, an input shaft on the housing, an epicyclic reducer gear inside the housing and connected with the input shaft, a rear output shaft connected with the output of the epicyclic reducer gear, and a chain wheel transmission device that is connected with the rear output shaft through a reducer gear, wherein, the chain wheel transmission device is linked to the front output shaft; the housing is also composed of an internal operating structure; the internal operating structure is connected with a high/low shift slide sleeve linked to the rear output shaft; the end surface of the rear output shaft is close to the internal end surface of a spline hole with an end surface close to the input shaft; the front bearing on a sun gear of the rear output shaft is provided with two radial lubrication hole. The utility model can lower the swing of the sun gear, reduce meshing noise of the epicyclic gears, and prolong the service life of the gears. Besides, two radial lubrication holes are arranged inside the rear output shaft, so as to improve lubricating and cooling effects.

Description

The full-time part-time case of automobile

Technical field

The utility model belongs to auto parts and components, is specifically related to a kind of full-time part-time case.

Background technology

Widely used full-time part-time case on the present cross-country car, particularly the driving conditions cross-country car under the harsh environment more promptly requires the antero posterior axis differential under the different operating modes, requires the antero posterior axis locking again, therefore, cross-country car part-time case that full-time driving is installed has different performances.Tooth profile metal chain-drive auxiliary gear box can satisfy above-mentioned vehicle operation, but the sun wheel swing, the big problem of planetary wheel engagement noise, simultaneously, the problem of the lubricated operating mode difference at needle bearing position before the end of rear output shaft and the sun wheel.The high problem of front output shaft flange yoke locking mechanism accuracy requirement.

Summary of the invention

The purpose of this utility model is to provide the lubricated operating mode at the preceding needle bearing position of a kind of sun wheel good, and the full-time part-time case of the non-oscillatory automobile of sun wheel is to address the above problem.

The technical solution of the utility model is: the full-time part-time case of automobile, it comprises housing, establish input shaft on the housing, connect the planetary gear speed reducing mechanism in the housing on the input shaft, the output of planetary gear speed reducing mechanism connects rear output shaft, by speed reduction gearing connection chain wheel transmission device, sprocket transmission device is connected with front output shaft on the rear output shaft; Also establish interior handle structure in the housing, interior handle structure is connected with bonded assembly high and low shift sliding sleeve on the rear output shaft, and the end face of rear output shaft leans on the into inner end surface of the splined hole of input shaft; The sun wheel front bearing place of rear output shaft offers two radial lubrication holes.

The end of described front output shaft connects black nut, establishes anti-loosing slice on the black nut, antiratchetting groove on the front output shaft end, and the anti-loosing slice on the black nut is located in the antiratchetting groove.

Even the end face of rear output shaft leans on before the inner end surface input sun wheel of the splined hole of input shaft into needle bearing and back deep groove ball bearing to become before basic coplane or the sun wheel needle bearing by coplane not axially to overlap with back deep groove ball bearing here, reduced the sun wheel swing like this, reduce planetary wheel engagement noise, prolonged gear life.Offer two radial lubrication holes in the rear output shaft, increase lubricated and cooling performance; Rely on accuracy of thread to guarantee that locking to change machinery into locking the front output shaft flange yoke, reduce accuracy of screw machining, locking more reliable.

Description of drawings

The full-time part-time case structural representation of Fig. 1 automobile.

The end construction scheme drawing of Fig. 2 rear output shaft.

The end anti-loose structure scheme drawing of Fig. 3 front output shaft.

The end of Fig. 4 front output shaft and black nut scheme drawing.

The specific embodiment

As shown in Figure 1, housing comprises the following bonded assembly front case 1, middle shell 2 and rear housing 3.Input shaft 4 is located in the front case 1, and it is by 5 supportings of back deep groove ball bearing.Connect the planetary gear speed reducing mechanism 6 in the housing on the input shaft 4.The sun wheel of planetary gear speed reducing mechanism 6 is located on the rear output shaft 7.Establish high and low shift sliding sleeve 8 on the rear output shaft 7.By speed reduction gearing 20 connection chain wheel transmission devices 9, sprocket transmission device 9 is connected with front output shaft 10 on the rear output shaft 7; Handle structure 11 in also establishing in the housing, interior handle structure 11 is connected with high and low shift sliding sleeve 8.Rear output shaft 7 is axially established oil passage 12.

As shown in Figure 2, the end face of rear output shaft 7 leans on the into inner end surface 14 of the splined hole 13 of input shaft 4; Even promptly 5 two opposing end surfaces of needle bearing 15 and back deep groove ball bearing are axially overlapped with the back deep groove ball bearing by needle bearing before coplane does not become basic coplane or sun wheel before the input sun wheel, the sun wheel front bearing of rear output shaft 7 is that needle bearing 15 places offer two radial lubrication holes 16 before the sun wheel.

Shown in Fig. 3,4, the end of front output shaft 10 connects black nut 17, establishes anti-loosing slice 18 on the black nut 17, antiratchetting groove 19 on front output shaft 10 ends, and the anti-loosing slice 18 on the black nut 17 is located in the antiratchetting groove 19.

Claims

1. full-time part-time case of automobile, it comprises housing, establishes input shaft on the housing, connect the planetary gear speed reducing mechanism in the housing on the input shaft, the output of planetary gear speed reducing mechanism connects rear output shaft, and by speed reduction gearing connection chain wheel transmission device, sprocket transmission device is connected with front output shaft on the rear output shaft; Also establish interior handle structure in the housing, interior handle structure is connected with bonded assembly high and low shift sliding sleeve on the rear output shaft, it is characterized in that the end face of rear output shaft leans on the into inner end surface of the splined hole of input shaft; The sun wheel front bearing place of rear output shaft offers two radial lubrication holes.

2. the full-time part-time case of automobile according to claim 1 is characterized in that the end of front output shaft connects black nut, establishes anti-loosing slice on the black nut, antiratchetting groove on the front output shaft end, and the anti-loosing slice on the black nut is located in the antiratchetting groove.