阅读说明：本技术 用于立式后桥分体式减速器总成 (Be used for split type reduction gear assembly of vertical rear axle ) 是由 梁磊 陈赫 李雪艳 杨一帆 卜娟 于 2019-09-16 设计创作，主要内容包括：本发明涉及一种分体式后桥减速器总成,包括减速器箱体组件,在减速器箱体组件上部通过一对深沟球轴承设置齿轮轴I,齿轮轴I上设置I轴油封；在减速器箱体组件中部通过6208轴承和圆柱滚子轴承设置齿轮轴II,在齿轮轴II上通过花键压配连接II轴齿轮,II轴齿轮与齿轮轴I齿轮配合；减速器箱体组件下端通过差速器调整支架连接差速器总成,差速器总成与齿轮轴II配合。本发明具有结构简单,箱体由整体式改为分体开式,从工艺、工装、夹具和装配方面出发,降低了在机加和装配中的难度；其具有传递力矩效率高,使用安全,产品寿命长,装配方便,维修快捷,无异响、噪音小、外型美观等特点。(The invention relates to a split type rear axle reducer assembly which comprises a reducer box body assembly, wherein a gear shaft I is arranged at the upper part of the reducer box body assembly through a pair of deep groove ball bearings, and an I-shaft oil seal is arranged on the gear shaft I; a gear shaft II is arranged in the middle of the speed reducer box body assembly through a 6208 bearing and a cylindrical roller bearing, a shaft gear II is connected to the gear shaft II in a press fit mode through a spline, and the shaft gear II is matched with the gear of the gear shaft I; the lower end of the speed reducer box body component is connected with a differential assembly through a differential adjusting bracket, and the differential assembly is matched with a gear shaft II. The invention has simple structure, the box body is changed from integral type to split type, and the difficulty in machining and assembling is reduced from the aspects of process, tooling, clamp and assembling; the torque transmission device has the characteristics of high torque transmission efficiency, safety in use, long service life of products, convenience in assembly, quickness in maintenance, no abnormal sound, low noise, attractive appearance and the like.)

1. The split type rear axle reducer assembly is characterized by comprising a reducer box body component (1), wherein a gear shaft I (3) is arranged at the upper part of the reducer box body component (1) through a pair of deep groove ball bearings (2), and an I-shaft oil seal (4) is arranged on the gear shaft I (3); a gear shaft II (6) is arranged in the middle of the speed reducer box body assembly (1) through a 6208 bearing (13) and a cylindrical roller bearing (5), a shaft II gear (14) is connected to the gear shaft II (6) in a press fit mode through a spline, and the shaft II gear (14) is matched with a gear of the gear shaft I (3) in a gear fit mode; the lower end of the speed reducer box body assembly (1) is connected with a differential assembly (11) through a differential adjusting bracket, and the differential assembly (11) is matched with a gear shaft II (6).

2. The split rear axle retarder assembly of claim 1, characterized in that a retaining ring (12) is arranged between the gear shaft II (6) and the 6208 bearing (13).

3. The split rear axle reducer assembly according to claim 1 or 2, wherein the differential adjustment bracket comprises a differential adjustment spiral ring (7), differential bearing locking plates (8), bolts (9) and elastic pads (10), tapered roller bearings are selected for bearings at two ends of the differential assembly (11), the differential adjustment spiral ring (7) is arranged outside the tapered roller bearings, the upper end of the differential adjustment spiral ring (7) is connected with the reducer case assembly (1), and the differential adjustment spiral ring (7) is connected with the tapered roller bearings through the differential bearing locking plates (8), the bolts (9) and the elastic pads (10).

Technical Field

The invention belongs to the technical field of automobile speed reducers, and particularly relates to a split type rear axle speed reducer assembly.

Background

At present, global energy and environmental systems face huge challenges, and automobiles need revolutionary transformation as major households for petroleum consumption and carbon dioxide emission. Therefore, electric vehicles with the advantages of low energy consumption and almost zero emission begin to attract attention, and new energy vehicles become the trend of vehicle development in the world. Meanwhile, with the popularization of new energy electric vehicles, the development of logistics express industry and the support of national policies, in order to respond to the national call on the 'two hundred' policy of electric vehicles, the high-speed logistics vehicles develop rapidly, but compared with the traditional passenger vehicles, the logistics vehicles have shorter service life and more faults; under the condition that the load of the logistics vehicle and the power are further increased, the rear axle of the original design can not meet the requirements.

Disclosure of Invention

The invention aims to provide a split type rear axle reducer assembly, which solves the problems in the prior art.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the split type rear axle reducer assembly comprises a reducer box body assembly, wherein a gear shaft I is arranged at the upper part of the reducer box body assembly through a pair of deep groove ball bearings, and an I-shaft oil seal is arranged on the gear shaft I; a gear shaft II is arranged in the middle of the speed reducer box body assembly through a 6208 bearing and a cylindrical roller bearing, a shaft gear II is connected to the gear shaft II in a press fit mode through a spline, and the shaft gear II is matched with a gear of the gear shaft I; the lower end of the speed reducer box body component is connected with a differential assembly through a differential adjusting bracket, and the differential assembly is matched with a gear shaft II.

Furthermore, a retainer ring is arranged between the gear shaft II and the 6208 bearing.

Further, differential mechanism adjustment support includes differential mechanism adjustment spiro union, differential mechanism bearing locking plate, bolt and bullet pad, tapered roller bearing is selected to the bearing at differential mechanism assembly both ends, sets up differential mechanism adjustment spiro union outside tapered roller bearing, and differential mechanism adjustment spiro union upper end is connected with reduction case subassembly, and differential mechanism adjustment spiro union passes through differential mechanism bearing locking plate, bolt and bullet pad and is connected with tapered roller bearing.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention has simple structure, the box body is changed from integral type to split type, and the difficulty in machining and assembling is reduced from the aspects of process, tooling, clamp and assembling; the torque transmission device has the characteristics of high torque transmission efficiency, safety in use, long service life of products, convenience in assembly, quickness in maintenance, no abnormal sound, low noise, attractive appearance and the like.

2. The speed reducer assembly does not have the traditional structures of a speed reducer box body and an oil bottom cover, the box body shell and the oil bottom cover are integrated, the differential assembly and the gear pair are completely wrapped, and the oil leakage risk is effectively reduced. The structures such as plugs and clamp springs are omitted, and the assembly difficulty is reduced. The invention has the advantages of compact structure, safe use, long service life of products, convenient assembly, quick maintenance, low noise and the like.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure, 1-a speed reducer box assembly, 2-a deep groove ball bearing, 3-a gear shaft I, 4-an shaft I oil seal, 5-a cylindrical roller bearing, 6-a gear shaft II, 7-a differential adjusting spiral ring, 8-a differential bearing locking plate, 9-a bolt, 10-a spring pad, 11-a differential assembly, 12-a retainer ring, 13-6208 bearing and 14-an II shaft gear.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1, the invention provides a split rear axle reducer assembly, which comprises a reducer case assembly 1, wherein a gear shaft I3 is arranged at the upper part of the reducer case assembly 1 through a pair of deep groove ball bearings 2, and an I shaft oil seal 4 is arranged on the gear shaft I3; a gear shaft II6 is arranged in the middle of the speed reducer case assembly 1 through a 6208 bearing 13 and a cylindrical roller bearing 5, a shaft II gear 14 is connected to the gear shaft II6 in a spline press fit mode, the shaft II gear 14 is in gear fit with the gear shaft I3, and a retainer ring 12 is arranged between the gear shaft II6 and the 6208 bearing 13. The structure can offset the axial force on the shaft II when advancing or retreating, thereby improving the stress condition of the bearing and prolonging the service life of the bearing.

The lower end of the speed reducer box body component 1 is connected with a differential assembly 11 through a differential adjusting bracket, and the differential assembly 11 is matched with a gear shaft II 6.

The differential adjusting bracket comprises a differential adjusting spiral ring 7, differential bearing locking plates 8, bolts 9 and elastic pads 10, tapered roller bearings are selected by bearings at two ends of the differential assembly 11, the differential adjusting spiral ring 7 is arranged outside the tapered roller bearings, the upper end of the differential adjusting spiral ring 7 is connected with the reduction gear box body assembly 1, and the differential adjusting spiral ring 7 is connected with the tapered roller bearings through the differential bearing locking plates 8, the bolts 9 and the elastic pads 10. According to the structure, adjusting gaskets at two ends of the traditional differential bearing are eliminated, and the problems of overlarge noise and the like caused by the play of the differential bearing and the locking prevention of the differential bearing are reduced.

The installation parts of the gear shaft I3 and the gear shaft II6 and the speed reducer box body component 1 adopt blind holes, and the structures of a plug and an oil bottom cover are eliminated, so that the sealing performance is improved, and the oil leakage risk is reduced. And a clamp spring structure is eliminated, and the axial play of the gear and the bearing is reduced.

The power transmission implementation process of the invention is as follows:

power is transmitted to the gear shaft I3 by the motor through the I shaft spline, is transmitted to the II shaft gear 14 by the gear shaft I3, and the II shaft gear 14 and the gear shaft II6 are connected by interference fit to form a whole and then are transmitted to the differential assembly 11. When the bicycle is reversed, the motor rotates reversely, so that each gear is driven to rotate reversely, the power transmission process is the same as that when the bicycle is advanced, namely, the stress surfaces of all the gears are different, and the front surface is changed into the reverse surface. In the process of force transmission, two-stage speed reduction and differential effects are achieved, and meanwhile the transmission efficiency is over 93%.

The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.