CN202413417U - Integral gate-type middle axle assembly - Google Patents

Abstract

The utility model relates to an integral gate-type middle axle assembly with external meshing cylindrical gears. A wheel-side reducer of the integral gate-type middle axle assembly comprises a pair of external meshing cylindrical gears, a driving gear is arranged above a driven gear, accordingly, the ground clearance of an automobile can be increased to the maximum extent, and trafficability is improved. The wheel-side reducer, a brake assembly and an axle housing assembly can be separately mounted, assemblability and maintainability are quite high, and the integral gate-type middle axle assembly is simple in structure, high in carrying capacity, low in cost, fine in weight index, high in transmission efficiency and suitable for medium and heavy off-road vehicles.

Description

A kind of integral portal type mid-bridge assembly

technical field

The utility model relates to the field of automobile drive, in particular to an integral portal type mid-bridge assembly. the

Background technique

At present, single-stage reduction drive axles without wheel-side reducers or planetary gear-type wheel-side reduction drive axles are generally used in the automotive drive field. However, due to the large size of the main reducer of the single-stage reduction drive axle, the ground clearance of the vehicle is too small, which limits the passability of the vehicle; although the size of the main reducer of the planetary wheel-side reduction drive axle is reduced Small, but for military vehicles and off-road vehicles that have higher requirements for passability, the ground clearance still cannot meet the requirements. In addition, the planetary wheel side reduction bridge wheel side has a complex structure and many transmission pairs, resulting in a decrease in its transmission rate , the energy loss is increased, and its complex structure makes maintenance more troublesome. the

Utility model content

Aiming at the deficiencies of the prior art, the utility model designs an integral portal mid-axle assembly that maximizes the ground clearance of the entire vehicle on the basis of satisfying the reliability and carrying capacity of military vehicles and off-road vehicles. And solve its complex structure, not easy to disassemble, repair and maintain the problem. the

The driven bevel gear of the main reducer of the overall portal intermediate axle assembly designed by the utility model is provided with a through shaft on the left side, the main reducer is connected to the axle housing, and the axle housing and the wheel side reducer The casings are connected together, and an inter-axle differential is provided in the main reducer casing, and an inter-wheel differential is also provided at the output end of the final reducer, and the inter-wheel differential is connected with one end of the half shaft , the other end of the half shaft is connected with the driving gear of the wheel speed reducer. the

The wheel reducer is composed of a pair of externally meshing cylindrical gears, including a driving gear and a driven gear. The driving gear is arranged vertically above the driven gear and is supported in the wheel reducer housing by a pair of bearings. , connect with the half shaft through internal splines, and achieve axial locking and positioning through lock nuts; the driven gear is connected with hub shafts through internal splines, and the inner head of the hub shafts achieves axial locking and positioning through lock nuts fixed. the

The utility model has the advantages of:

1. The wheel reducer is composed of a pair of external meshing cylindrical gears. With the help of adjusting the relative positions of the driving gear and the driven gear, the ground clearance of the car can be adjusted. In addition, the driving gear is arranged vertically above the driven gear, which can maximize the ground clearance of the vehicle and improve the passability. the

2. The utility model has very high assemblability and maintainability: the wheel reducer, brake assembly and axle housing assembly can be assembled separately, and has a simple structure, high bearing capacity, low cost, good weight index, and transmission High efficiency, suitable for medium and heavy off-road vehicles. the

Description of drawings

Figure 1 is a schematic structural view of the integral portal-type mid-axle assembly. the

Detailed ways

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

As shown in Figure 1, a through shaft 8 is provided on the upper left side of the driven bevel gear 15 of the main reducer 13 of the integral portal intermediate bridge assembly designed by the utility model, and the said main reducer 13 is connected to the bridge by bolts. In the casing 7, the axle casing 7 is preferably a stamped and welded axle casing, and the stamped and welded axle casing 7 is connected with the wheel-side reducer casing 2 by welding (or bolted connection), and the main reducer 13 casing is provided with There is an inter-axle differential 9 supported by a pair of tapered bearings, the output end of the final drive 13 is provided with an inter-wheel differential 14, and the side gear of the inter-wheel differential 14 is connected to one end of the side shaft 8 through a spline Connected, the other end of the half shaft 8 is splined connected with the driving gear 4 of the wheel speed reducer. the

The wheel speed reducer is composed of a pair of externally meshing cylindrical gears, including a driving gear 4 and a driven gear 12. The driving gear 4 is arranged vertically above the driven gear 12 and is supported on the wheel by a pair of bearings 3. In the side reducer housing 2, it is connected with the half shaft 6 through the internal spline, and the axial locking and positioning are realized through the lock nut; the driven gear 12 is connected with the hub shaft 11 through the internal spline, and the hub shaft 11 The inner head is axially locked and fixed by a lock nut. The hub axle 11 is connected to the hub assembly 1 through end teeth, and is fixed on the hub assembly 1 by bolts; the hub assembly 1 is connected to the brake disc 10 of the disc brake by bolts. the

The wheel reducer is composed of a pair of external meshing cylindrical gears, by means of the adjustment of the relative positions of the driving gear 4 and the driven gear 12, the ground clearance of the car can be adjusted. In addition, the driving gear 4 is arranged vertically above the driven gear 12, which can maximize the ground clearance of the vehicle and improve the trafficability. the

The wheel speed reducer, brake assembly and axle housing assembly of the utility model can be assembled separately, have high assemblability and maintainability, simple structure, high bearing capacity, low cost, good weight index, and transmission High efficiency, suitable for medium and heavy off-road vehicles. the

Claims (2)

1. An integral portal mid-axle assembly, including a main reducer, a through shaft, an axle housing, an inter-axle differential, an inter-wheel differential, a wheel-side reducer housing, a half shaft, and a wheel-side reducer, It is characterized in that: the through-shaft is arranged on the upper left side of the driven bevel gear of the main reducer, the main reducer is connected in the axle housing, and the axle housing is connected with the shell of the wheel-side reducer. The housing of the reducer is provided with an inter-axle differential, and an inter-wheel differential is provided at the output end of the main reducer. The inter-wheel differential is connected to one end of the half shaft, and the other end of the half shaft is connected to The driving gear connection of the wheel reducer. 2. The integral portal type mid-axle assembly according to claim 1, characterized in that: the wheel reducer is composed of a pair of externally meshing cylindrical gears.

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