Through type drive axle main speed reducer without interaxial differential

Abstract

The utility model relates to a through-type drive axle main speed reducer without an inter-axle differential, which is provided with an input shaft and a through shaft, the input shaft is connected with the through shaft through a spline connecting sleeve, and the spline connecting sleeve is provided with a support bearing; an inter-axle differential mechanism structure is omitted, so that the problems that under the working conditions of low speed and less turning of a driving duplex axle, an axle inter-axle differential mechanism does not play an effective role, the product transmission efficiency is low, and the energy consumption is high are effectively solved, and meanwhile, the overall structure of the through type drive axle main speed reducer is fully simplified; and the overall reliability and after-sales maintainability of the product are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of commercial vehicle parts, in particular to a through-type drive axle main reducer without an inter-axle differential. Background Art

[0002] At present, in the field of heavy-duty commercial vehicles, the drive axle structure used is mostly a double-drive axle. In order to avoid the tire wear problem caused by the wheel speed difference between the double-drive axle shafts, the conventional solution is to set an inter-axle differential structure at the main reducer of the through-type drive axle; this structure has the following problems: on the one hand, the existence of the inter-axle differential will reduce the transmission efficiency of the drive axle, and the vehicle operation energy consumption is difficult to effectively control; on the other hand, in low-speed and less turning operating conditions, the inter-axle differential does not play an effective role, and the structure becomes redundant, which has an adverse effect on the maintainability of the product. However, directly canceling the inter-axle differential will cause unbalanced load problems in the bearings and gears, which is very prone to after-sales failures such as abnormal gear wear, drive shaft breakage and bearing ablation, causing customer dissatisfaction. Utility Model Content

[0003] The purpose of the utility model is to provide a through-type drive axle main reducer without an inter-axle differential in view of the deficiencies in the prior art, so as to overcome the problem that the inter-axle differential of the existing double-drive axle does not play an effective role under conditions of low speed and few turns, the structure becomes redundant, and the energy consumption of the vehicle operation is difficult to reduce, and the serious after-sales failure problem caused by the unbalanced force caused by directly eliminating the inter-axle differential is also solved.

[0004] The utility model is realized by adopting the following technical solutions:

[0005] A through-type drive axle main reducer without an inter-axle differential comprises an input shaft and a through shaft. The through-type drive axle main reducer is provided with the input shaft and the through shaft. The input shaft and the through shaft are connected via a spline connecting sleeve, and the spline connecting sleeve is provided with a support bearing.

[0006] Furthermore, the power input end of the through-type drive axle final reducer is provided with the input shaft, the power output end of the through-type drive axle final reducer is provided with a through shaft, the input shaft is provided with an axial positioning sleeve and a driving gear, the input shaft is positioned with the through-type drive axle final reducer via the axial positioning sleeve, and the driving gear is connected to the input shaft via a spline.

[0007] Furthermore, the spline connecting sleeve includes an input end connecting spline, a positioning stop and an output end connecting spline, the input end connecting spline and the output end connecting spline are respectively arranged at both ends of the positioning stop, the input end connecting spline is circumferentially connected to the input shaft and is positioned by the positioning stop, and the output end connecting spline is circumferentially connected to the through shaft.

[0008] Furthermore, the support bearing is provided on the outer periphery of the positioning stop.

[0009] Compared with the prior art, the utility model has the following beneficial technical effects:

[0010] By eliminating the inter-axle differential structure, the problem of low transmission efficiency and high energy consumption of the product due to the ineffective inter-axle differential of the driving double axle under low speed and few turns is effectively solved. At the same time, the overall structure of the through-type drive axle main reducer is fully simplified, and the overall reliability and after-sales maintainability of the product are improved.

[0011] The provision of positioning stoppers and supporting bearings effectively alleviates defects such as gear unbalanced load and bearing ablation caused by directly eliminating the inter-axle differential. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a structural schematic diagram of the spline connecting sleeve of the utility model.

[0014] Reference numerals

[0015] 1. Input shaft; 2. Axial positioning spacer; 3. Driving gear; 4. Spline connecting sleeve; 41. Input end connecting spline; 42. Positioning stop; 43. Output end connecting spline; 5. Support bearing; 6. Through shaft. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0017] like Figure 1-Figure 2As shown, a through-type drive axle main reducer without an inter-axle differential includes an input shaft 1 and a through shaft 6. The through-type drive axle main reducer is provided with an input shaft 1 and a through shaft 6. The input shaft 1 and the through shaft 6 are connected via a spline connecting sleeve 4, and the spline connecting sleeve 4 is provided with a supporting bearing 5.

[0018] The through-type drive axle final reducer is composed of an input shaft 1, a spline connection sleeve 4, a driving gear 3, a spline connection sleeve 4, a support bearing 5 and a through shaft 6 arranged from the power input end of the through-type drive axle final reducer to the power output end of the through-type drive axle final reducer. The inter-axle differential structure is cancelled, which solves the problem that the inter-axle differential does not play an effective role under the working conditions of low speed and few turns of the driving double axle, and the product has low transmission efficiency and high energy consumption. At the same time, it fully simplifies the overall structure of the through-type drive axle final reducer, and improves the overall reliability and after-sales maintainability of the product;

[0019] An input shaft 1 is provided at the power input end of the through-type drive axle final reducer, a through shaft 6 is provided at the power output end of the through-type drive axle final reducer, the input shaft 1 is provided with an axial positioning sleeve 2 and a driving gear 3, the input shaft 1 is positioned with the through-type drive axle final reducer through the axial positioning sleeve 2, and the driving gear 3 is connected to the input shaft 1 through a spline.

[0020] In a feasible embodiment, the width of the axial positioning sleeve 2 can be adjusted according to the installation position requirement of the driving gear 3 .

[0021] The spline connecting sleeve 4 includes an input end connecting spline 41, a positioning stop 42 and an output end connecting spline 43. The input end connecting spline 41 and the output end connecting spline 43 are respectively arranged at both ends of the positioning stop 42. The input end connecting spline 41 is circumferentially connected to the input shaft 1 and is positioned by the positioning stop 42. The output end connecting spline 43 is circumferentially connected to the through shaft 6.

[0022] By positioning the stop 42 and supporting the bearing 5, defects such as gear force imbalance and bearing ablation caused by directly eliminating the inter-axle differential are alleviated.

[0023] A support bearing 5 is provided on the outer periphery of the positioning stop 42 .

Claims

1. A through-type drive axle final reducer without an inter-axle differential, characterized in that: The through-type drive axle main reducer is provided with an input shaft (1) and a through shaft (6); the input shaft (1) and the through shaft (6) are connected via a spline connection sleeve (4); the spline connection sleeve (4) is provided with a support bearing (5).

2. The through-type drive axle final reducer without inter-axle differential according to claim 1, characterized in that: The power input end of the through-type drive axle main reducer is provided with the input shaft (1), the power output end of the through-type drive axle main reducer is provided with a through shaft (6), the input shaft (1) is provided with an axial positioning sleeve (2) and a driving gear (3), the input shaft (1) is positioned with the through-type drive axle main reducer through the axial positioning sleeve (2), and the driving gear (3) is connected to the input shaft (1) through a spline.

3. The through-type drive axle final reducer without inter-axle differential according to claim 1, characterized in that: The spline connection sleeve (4) comprises an input end connection spline (41), a positioning stop (42) and an output end connection spline (43); the input end connection spline (41) and the output end connection spline (43) are respectively arranged at two ends of the positioning stop (42); the input end connection spline (41) is circumferentially connected to the input shaft (1) and is positioned by the positioning stop (42); the output end connection spline (43) is circumferentially connected to the through shaft (6).

4. The through-type drive axle final reducer without inter-axle differential according to claim 3, characterized in that: The support bearing (5) is provided on the outer periphery of the positioning stop (42).

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