CN201941592U - Wheel-side planetary reducer assembly for drive axle - Google Patents

Abstract

The utility model provides a wheel-side planetary reducer assembly for a drive axle that can be applied to a double-axle reducer and has a relatively large wheel-side deceleration. The hub, the reducer assembly includes a sun gear, ring gear and planetary gear, which is special in that: the sun gear is fixedly connected with the axle shaft, and the ring gear is fixedly connected with the axle housing; the planetary gear is connected through the planetary The wheel pin is rotatably fixed on the planet carrier, which is fixedly connected to the wheel hub through the reducer housing. The utility model realizes the two-stage deceleration of the driving axle through the sun gear, the ring gear and the planetary gear, which not only ensures the good deceleration performance of the driving axle as a whole, but also ensures that the reducer assembly of the utility model has a relatively large torque ; The wheel edge reduction ratio of the utility model can be 3.89, making it more suitable for industrial and mining working environments.

Description

Wheel side planetary reducer assembly for drive axle

technical field

The utility model relates to a wheel-side planetary reducer assembly for a drive axle, more specifically, to a wheel-side planetary reducer assembly for a drive axle that can be applied to a double-bridge reducer and has a relatively large wheel-side deceleration. become.

Background technique

At present, the mining axles on heavy trucks are mostly double-stage reduction, but the transmission speed ratio is generally not large, which cannot meet the transmission performance requirements of large torque and large reduction ratio for the axle in the industrial and mining working environment, making the use of existing axles The failure rate of industrial and mining vehicles is relatively high, and the transmission components are easily damaged.

Contents of the invention

In order to overcome the shortcomings of the above-mentioned technical problems, the utility model provides a wheel-side planetary reducer assembly for drive axles that can be applied to double-axle reducers and has a large wheel-side reduction ratio.

The wheel side planetary reducer assembly for drive axle of the utility model, the drive axle includes half shaft, axle housing and the wheel hub connected with the axle housing through bearings, the reducer assembly has sun gear, ring gear and planetary gear , which is special in that: the sun gear is fixedly connected to the axle shaft, and the ring gear is fixedly connected to the axle housing through the ring gear bracket; It is fixedly connected to the hub through the reducer housing. The axle shaft is fixedly connected with the sun gear, realizing the conversion of the rotational motion of the axle shaft into the rotational motion of the sun gear; the axle housing is stationary relative to the frame, and the ring gear fixedly connected with the axle housing is also stationary; the planetary gear passes through the planetary The wheel pin is connected to the planetary carrier in rotation, that is, the planetary wheel can rotate around the planetary wheel pin, and because the planetary carrier is connected to the wheel hub and the wheel hub is connected to the axle housing through bearings, so through the sun gear, planetary gear and ring gear The interaction converts the rotational motion of the half shaft into the rotational motion of the hub.

The wheel-side planetary reducer assembly for the drive axle of the utility model is composed of a sun gear, a ring gear and a planetary gear, and the wheel-side reduction ratio of the reducer assembly is 3.89. At present, the axles currently used in China do not have this wheel-side reduction ratio, which can be beneficial to increase the reduction ratio of the entire system and further improve the driving torque of the mining vehicle.

In the wheel-side planetary reducer assembly for drive axles of the utility model, the numbers of teeth of the sun gear, the ring gear and the planet gear are 18, 52, and 17 respectively.

In the wheel-side planetary reducer assembly for a driving axle of the utility model, the installation distance between the sun gear and the planetary gear is 100-105 mm. The use of larger sun gears and planetary gears is conducive to ensuring transmission reliability, and the larger wheel reduction ratio is conducive to increasing the ground clearance of the drive axle assembly, so that the industrial and mining vehicles using the reducer assembly of the utility model can adapt to the Harsh working environment.

The drive axle of the utility model uses a wheel-side planetary reducer assembly, and the drive axle is a double-stage deceleration drive axle.

The beneficial effects of the utility model are: the utility model realizes the two-stage deceleration of the drive axle through the sun gear, the ring gear and the planetary gear, which not only ensures that the drive axle has better deceleration performance as a whole, but also ensures the deceleration of the utility model. The gear assembly has a large torque; the wheel side reduction ratio of the utility model can be 3.89, making it more suitable for industrial and mining working environments; the wheel side planetary reducer assembly of the utility model is easier to apply to the double-stage reduction drive axle superior.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the assembly position schematic diagram of the present utility model;

Fig. 3 is the principle diagram of the operation of sun gear, ring gear and planetary gear among the utility model;

In the figure: 1 sun gear, 2 ring gear, 3 planet gear, 4 reducer housing, 5 planet gear pin, 6 planet carrier, 7 axle shaft, 8 ring gear bracket, 9 wheel hub, 10 wheel bolt, 11 axle housing.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

As shown in Figure 1 and Figure 2, the structure diagram and assembly position diagram of the present utility model are respectively provided, which include the half shaft 7, the axle housing 11, the sun gear 1, the planetary gear 3, the ring gear 2, and the reducer housing 4. Planetary gear pin 5, planetary carrier 6, ring gear bracket 8, wheel hub 9, wheel bolt 10; half shaft 7 is connected with the drive system, axle housing 11 is arranged outside the half shaft 7, relative to the rotation of the half shaft 7 The moving axle housing 11 is in a static state, and the axle housing 11 is used for solid support. The sun gear 1 is fixedly connected to the half shaft 7, and the connection form can be a key connection; the ring gear 2 is fixedly connected to the axle housing 11 through the ring gear bracket 8, so that the ring gear 2 is also in a position relative to the rotation of the half shaft 7. Stationary state. The wheel hub 9 is rotatably fixed on the outer surface of the axle housing 11 through two bearings. The wheel hub 9 is fixedly connected to the annular reducer housing 4. The reducer housing 4 is fixedly connected to the planetary carrier 6. The planetary gear 3 passes through the planetary gear pin 5 On the fixed planet carrier 6, the planetary gear 3 can freely rotate around the planetary gear pin 5. The wheel is fixedly connected with the wheel hub 9 through wheel bolts 10 .

The number of teeth of sun gear 1, ring gear 2 and planetary gear 3 can be selected as 18, 52, and 17 respectively, so that the wheel side reduction ratio of the reducer assembly is 3.89, but the current domestic axles do not have this wheel side reduction ratio. This reduction ratio increases the reduction ratio of the drive axle assembly. In order to increase the ground clearance, the installation distance between the sun gear and the planet gear is 100-105mm. During the working process of the utility model, firstly, the half shaft 7 drives the sun gear 1 to rotate relative to the axle housing 11, and since the ring gear 2 is fixedly connected with the axle housing 11, the planetary gear 3 can go around the planetary pin 5 to rotate, so that under the joint action of the sun gear 1 and the ring gear 2, the planetary carrier 6 will be driven to rotate, and the planetary carrier 6 will drive the wheel hub 9 to rotate around the axle housing 11, and then the drive will be fixed with the wheel hub 9 The attached wheel turns.

Claims (5)

1. a drive axle is with taking turns the limit planetary gear assy, the wheel hub (9) that semiaxis (7), axle housing (11) is arranged in the drive axle and be connected by bearing with axle housing, described speed reducer assembly comprises sun wheel (1), gear ring (2) and satellite gear (3), it is characterized in that: described sun wheel is captiveed joint with semiaxis, and described gear ring (2) is captiveed joint with axle housing by gear ring support (8); Described satellite gear is rotatably fixed on the pinion carrier (6) by satellite gear pin (5), and this pinion carrier is captiveed joint with wheel hub by reducer shell (4).

2. drive axle according to claim 1 is characterized in that with wheel limit planetary gear assy: the hub reduction ratio by the speed reducer assembly of sun wheel (1), gear ring (2) and satellite gear (3) formation is 3.89.

3. drive axle according to claim 1 and 2 is with taking turns the limit planetary gear assy, and it is characterized in that: the number of teeth of described sun wheel (1), gear ring (2) and satellite gear (3) is respectively 18,52,17.

4. drive axle according to claim 1 and 2 is with taking turns the limit planetary gear assy, and it is characterized in that: the mounting distance between described sun wheel (1) and the satellite gear (3) is 100～105mm.

5. drive axle according to claim 1 and 2 is with taking turns the limit planetary gear assy, and it is characterized in that: described drive axle is the dual-ratio reduction drive axle.

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