KR20130132016A

KR20130132016A - Reduction gear driven front axle for commercial vehicles

Info

Publication number: KR20130132016A
Application number: KR1020120056056A
Authority: KR
Inventors: 이영춘; 전남진; 조명재; 손영호; 김진현
Original assignee: ( 주 ) 화신
Priority date: 2012-05-25
Filing date: 2012-05-25
Publication date: 2013-12-04

Abstract

The present invention relates to an axle drive reduction gear for commercial vehicle which delivers the output of an engine from first and second axle shafts to first and second sun gears, delivers from the first and second sun gears to first and second planet gears, and rotates a hub while rotating a carrier through a fixed ring gear. The axle drive reduction gear comprises: first and second axle shafts which are central shafts; first and second support ring gears which are combined with the axle shafts; first and second planet gears which are combined with the flank of the first and second support ring gears and are interlocked with the first and second sun gears combined with the shafts of the first and second axle shafts; first and second ring gears which are combined with an internal space which is comprised in a cylinder shape by combining the first and second roller bearings combined with the first with second planet gears and the first and second pins penetrating the first and second planet gears; and first and second plate carriers which are combined with the first and second ring gears and are fixated to the outside by first and second hub bolts. Like the forementioned, the present invention increases a shaft support effect about the first and second planet gears and improves noise and vibration by rotating four first and second planet gears through the first and second planet gears fixated to the first and second plate carriers together and including first and second snap rings.

Description

Reduction gear driven front axle for commercial vehicles}

The present invention relates to axle drive reduction, and more particularly, the output from the engine is transmitted from the first and second axle shafts to the first and second sun gears, and from the first and second sun gears to the first and second planetary gears. The hub also rotates at the same time as the carrier rotates through a fixed ring gear, and relates to axle drive reduction apparatus for commercial vehicles.

In general, when the axle drive deceleration has a housing as disclosed in the Republic of Korea Patent Publication No. 10-2000-0059738 (2000.10.05), the inner center has an output sun gear having a fixed sun gear and an output shaft, the fixed And output sun gears are selectively processed with gears of different number of teeth, geared with planetary gears according to the number of teeth, and installed on both carriers, and the planetary gears are installed at fixed intervals on the outer circumference of fixed and output sun gears. An end shaft is formed at the center of one end of the carrier, and the speed reduction device is characterized by protruding from both sides of the housing together with the output shaft.

However, support for sun gear is unstable, and there is a problem of severe noise and vibration.

Republic of Korea Patent Publication No. 10-2000-0059738 (2000.10.05)

In order to solve the above problems, in the present invention, the planetary gears are fixed to four, and the first and second plate carriers and the first and second ring gears are fixed to rotate, and when the first and second planetary gears are assembled, The first and second snap rings are combined to increase the shaft support effect of the first and second planetary gears, and to improve noise and vibration.

In order to achieve the object, a first axle shaft serving as a central axis and a first support ring gear coupled to the axle shaft and the first support ring gear are coupled to a side of the first axle shaft. A first ring gear coupled to a first planetary gear meshing with a first sun gear, a first roller bearing coupled to the first planetary gear, and a first pin penetrating the first planetary gear, are engaged in a cylindrical shape. And a second support ring gear and the second support, which are coupled to the first ring gear and are coupled to the second axle shaft, the second axle shaft being a central axis, and a first plate carrier fixed to a first hub bolt on an outer surface thereof. A second planetary gear coupled to a ring gear side and engaged with a second sun gear coupled to an axis of the second axle shaft, and a second roller bearing coupled to the second planetary gear and the second A second ring gear coupled to the second pin penetrating the planetary gear and coupled to the inside having a cylindrical shape, and a second plate carrier fixed to the outer surface by a second hub bolt coupled to the second ring gear. It is done.

According to another feature of the present invention, the first and second planetary gears may be formed around four of the first and second sun gears.

In still another aspect of the present invention, the first and second snap rings may be formed in the shape of a disk having a hole in the center thereof, and may be coupled to the first and second pins to support the first and second planetary gears.

In another aspect of the present invention, the first and second plate carriers are coupled to the first and second ring gears and are rotated at the same time.

In another aspect of the present invention, the first and second sun gears are fixed to the center of the first and second ring gears through the first and second roller bearings, the first and second pins, and the first and second planetary gears. It is characterized by.

As described above, in the present invention, the four first and second planetary gears rotate together through the first and second planetary gears fixed to the first and second plate carriers, and include the first and second snap rings. It increases the effect of shaft support on planetary gears and is effective in improving noise and vibration.

1 is a perspective view of a front axle drive reduction apparatus for a commercial vehicle according to the present invention.
2 is a front view of a front axle drive reduction apparatus for a commercial vehicle according to the present invention.
3 is a coupling diagram of a front axle drive reduction apparatus for a commercial vehicle according to the present invention.

1 is a perspective view of a front axle drive reduction apparatus for a commercial vehicle according to the present invention, Figure 2 is a front view of a front axle drive reduction apparatus for a commercial vehicle according to the invention, Figure 3 is a front axle drive reduction apparatus for a commercial vehicle according to the present invention Is the degree of coupling.

Hereinafter, components according to the present invention will be described with reference to the drawings.

As shown in FIG. 1, a first ring gear 30 and a first ring coupled to a first axle shaft 10 serving as a central axis and a first support ring gear 20 coupled to the axle shaft 10. The second support coupled to the first plate carrier 40 and the second axle shaft 50 and the second axle shaft 50 which are coupled to the gear 30 and fixed to the outer surface by the first hub bolt 41. Composed of a second ring gear 70 coupled to the ring gear 60 and the first plate carrier 80 fixed to the second hub bolt 81 on the outer surface in combination with the second ring gear 70 have.

In detail, as shown in FIG. 3, the first ring gear 30 is positioned at the center of the first ring gear 30, and four first gears are disposed around the first sun gear 30. 1 planetary gear 32 is engaged, the first planetary gear 32 is engaged with the first roller bearing 33, the first roller bearing 33 is fixed with a first pin 34, 1 is supported by a snap ring 35 and fixedly coupled to the first plate carrier 40 through the first hub bolt 41.

The first and second sun gears 31 and 71 may include the first and second roller bearings 33 and 73 at the centers of the first and second ring gears 30 and 70, and the first and second pins 24. 74 and the first and second planetary gears 31 and 71.

In addition, one second sun gear 70 is positioned at the center of the second ring gear 70, and four second planetary gears 72 are engaged around the second sun gear 70. The second planetary gear 72 is coupled to the second roller bearing 73, and the second roller bearing 73 is fixed to the second pin 74 and supported by the second snap ring 75. The second plate carrier 80 is fixedly coupled through the second hub bolt 81.

In addition, the first and second snap rings 35 and 75 serve to support the first and second planetary gears 32 and 72 in a circular shape.

Hereinafter, an operation method according to the present invention will be described.

When the output from the engine is transmitted to the first axle shaft 10, the first axle shaft 10 is transferred to the first sun gear 31, and when the first sun gear 31 rotates, the four first gears are rotated. 1 The planetary gear 32 rotates and rotates the first plate carrier 40 through the fixed first ring gear 30.

In addition, the first and second plate carriers 40 and 80 are coupled to the first and second ring gears 30 and 70 to be rotated at the same time, and the first and second planetary gears 32 and 72 are formed of parts. When assembling, the gear support and the shaking are severe due to the forced indentation, and thus the gear support structure is changed and the noise is reduced through the first and second snap rings 35 and 75 after the forced indentation for preventing and minimizing deviation.

Although the present invention has been shown and described with respect to specific embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Anyone who can afford it will know.

10: first axle shaft 20: first support ring gear
30: first ring gear 31: first sun gear
32: first planetary gear 33: first roller bearing
34: first pin 35: first snap ring
40: first plate carrier 41: first hub bolt
50: second axle shaft: 60: second support ring gear
70: second ring gear 71: second sun gear
72: second planetary gear 73: second roller bearing
74: second pin 75: second snap ring
80: second plate carrier 81: second hub bolt

Claims

In the front axle drive reduction device for commercial vehicles,
A first axle shaft 10 serving as a central axis;
A first support ring gear (20) coupled to the axle shaft (10);
A first planetary gear 32 and a first planetary gear 32 coupled to a side surface of the first support ring gear 20 and engaged with a first sun gear 31 coupled to a shaft of the first axle shaft 10; A first ring gear (30) coupled to the first roller bearing (33) coupled with the first (32) and the first pin (34) penetrating through the first planetary gear (32) to form a cylindrical shape;
A first plate carrier 40 coupled to the first ring gear 30 and fixed to an outer surface by a first hub bolt 41;
A second axle shaft 50 serving as a central axis;
A second support ring gear (60) coupled to the second axle shaft (50);
A second planetary gear 72 and a second planetary gear 72 coupled to a side of the second support ring gear 60 and engaged with a second sun gear 71 coupled to a shaft of the second axle shaft 50; A second ring gear 70 coupled to a second roller bearing 73 coupled to 72 and a second pin 74 penetrating the second planetary gear 72 to be coupled to the inside of a cylindrical shape;
And a second plate carrier (80) fixed to a second hub bolt (81) on an outer surface in combination with the second ring gear (70).

The method of claim 1,
The first and the second planetary gears (32, 72) is a front axle drive reduction apparatus for commercial vehicles, characterized in that four are formed around the first, second sun gear (31, 71).

The method of claim 1,
The first and second snap rings 35 and 75 have a shape of a disk having a hole in the center thereof, and are coupled to the first and second pins 34 and 74 to support the first and second planetary gears 32 and 72. Front axle drive reduction device for commercial vehicles, characterized in that further.

The method of claim 1,
The first and second plate carriers (40, 80) is coupled to the first and second ring gears (30, 70) is fixed to the front axle drive reduction device for a commercial vehicle, characterized in that the rotation at the same time.

The method of claim 1,
The first and second sun gears 31 and 71 may include the first and second roller bearings 33 and 73 and the first and second pins 24 and 74 at the centers of the first and second ring gears 30 and 70. And the first and second planetary gears (31, 71) are fixed to the front axle drive reduction apparatus for a commercial vehicle.