阅读说明：本技术 簧上集成式电驱动总成的车桥架构 (Axle framework of sprung integrated electric drive assembly ) 是由 贺林 谢冬 关庆生 于 2018-08-11 设计创作，主要内容包括：本发明公开了一种簧上集成式电驱动总成的车桥架构,该车桥架构包括碗口支撑壳,弧形连接横梁,轮边半轴套管,半轴,轮毂等组件。其中碗口支撑壳与弧形连接横梁可以做成一体式,也可以做成拆分式。该车桥架构配合固定在底盘上的电机减速器联合体使用；所述车桥两端通过板簧与底盘相连。所述半轴包括带有万向节的内侧半轴、中间半轴、轮边半轴。外侧的轮边半轴与轮毂通过法兰盘刚性连接,轮边半轴与中间半轴之间,内侧半轴与中间半轴之间采用万向节连接。所述驱动桥的动力传递通过电机,减速器,差速器,半轴,轮毂传递到驱动轮。本发明主要目的是为将电机、减速器变成簧上质量前提下,配合带有万向节的半轴使用,而提出的一种新型车桥架构。(The invention discloses an axle framework of a spring-loaded integrated electric drive assembly. Wherein the bowl mouth supporting shell and the arc-shaped connecting cross beam can be made into an integral type and can also be made into a detachable type. The axle framework is matched with a motor reducer combination fixed on the chassis for use; and two ends of the axle are connected with the chassis through plate springs. The half shaft comprises an inner side half shaft with a universal joint, a middle half shaft and a wheel edge half shaft. The wheel edge half shaft on the outer side is rigidly connected with the wheel hub through a flange plate, the wheel edge half shaft is connected with the middle half shaft, and the inner side half shaft is connected with the middle half shaft through a universal joint. The power transmission of the drive axle is transmitted to the drive wheel through the motor, the speed reducer, the differential mechanism, the half shaft and the wheel hub. The invention mainly aims to provide a novel axle framework for matching with a half shaft with a universal joint for use on the premise that a motor and a speed reducer are changed into sprung mass.)

1. An axle framework of a spring-mounted integrated electric drive assembly comprises a bowl opening supporting shell, an arc-shaped connecting cross beam, a wheel-side half-shaft sleeve, a wheel hub, a half shaft and other components; the method is characterized in that: the space reserved in the middle of the arc-shaped connecting beam is used for arranging a combination body of a driving motor and a speed reducer and is suspended on the chassis longitudinal beam through a fixing bracket; the bowl mouth supporting shell supports the sprung mass through a plate spring; the bowl mouth supports the half axle that the shell inboard is used for through having the universal joint.

2. The bowl mouth support shell according to claim 1, wherein: the bowl mouth supporting shell is hollow and is bowl-mouth-shaped, namely one end of the bowl mouth supporting shell is small, and the other end of the bowl mouth supporting shell is large.

3. The bowl mouth support shell according to claim 2, wherein: the upper end face of the bowl mouth supporting shell supports sprung mass through a plate spring, and the inner side of the bowl mouth can penetrate through a universal joint with a larger outer diameter.

4. The bowl mouth support shell according to claim 2, wherein: the joint of the bowl opening and the brake bottom plate can be round or square, and the bowl opening supporting shell, the brake bottom plate and the wheel-side semi-axis sleeve are connected together in a screwed mode through the flange plates.

5. The arcuate connecting beam of claim 1, wherein: the arc-shaped connecting beam is arc-shaped or in other curve shapes.

6. The arcuate connecting beam of claim 5, wherein: the two ends of the arc-shaped connecting cross beam are fixedly connected with the two sides of the bowl opening supporting shell respectively, and the middle part of the arc-shaped connecting cross beam is expanded towards the front side and the rear side of the automobile in an arc shape.

7. The axle architecture of a sprung integrated electric drive assembly according to claim 1, characterized in that: the axle frame portion may be comprised of three parts: 1. a half-shaft sleeve; 2. a bowl mouth support shell; 3. the arc is connected with the cross beam; the wheel rim semi-axis sleeve is connected with the bowl opening supporting shell through flanges, and the arc-shaped connecting beam on the inner side is fixedly connected with the side face of the bowl opening supporting shell.

8. The axle architecture of a sprung integrated electric drive assembly according to claim 1, characterized in that: the axle frame portion may be comprised of two parts: 1. a bowl mouth-arc beam combination body 2, a semi-axis sleeve; the bowl mouth supporting shell and the arc-shaped connecting beam are made into an integrated bowl mouth-arc-shaped beam combination body, and the outer end of the bowl mouth is fixedly connected with the wheel rim semi-axis sleeve.

9. The bowl mouth support shell according to claim 1, wherein: and a bearing is additionally arranged between the outer side wheel edge half shaft and the bowl opening supporting shell to serve as a middle support of the half shaft.

10. The axle shaft of claim 1, wherein: the wheel edge half shaft and the outer flange plate are fixedly connected through splines, and the outer flange plate and the wheel hub are fixedly connected through bolts.

Technical Field

The invention relates to the field of electric automobiles, in particular to an axle framework of a sprung integrated electric drive assembly.

Background

The power transmission of the chassis of the electric automobile on the market at present adopts two arrangement forms, one is the arrangement form of 'a motor + a longitudinally-arranged transmission shaft + a traditional axle', and the other is the arrangement form of 'the motor + a speed reducer + a differential mechanism' integrated into a drive axle. In either case, the use of an electrically driven axle is slightly modified from a conventional one-piece drive axle. The axle housing inner space is little, and is integral axle, can only be used for with the integrated electric drive assembly structure under the spring on the axle housing of motor reducer integration, or the electric drive assembly structure of motor + indulge and put transmission shaft + traditional axle.

Disclosure of Invention

The invention aims to provide an axle framework of a sprung integrated electric drive assembly.

The framework leaves enough arrangement space for the motor and the reducer combination. And enough passing space is reserved when the universal joint on the outer side of the half shaft passes through.

The invention is realized by the following technical scheme: an axle framework of a spring-mounted integrated electric drive assembly comprises a bowl opening supporting shell, an arc-shaped connecting cross beam, a wheel-side axle sleeve and other assemblies, wherein the bowl opening-cross beam combination can be processed on a plate by the aid of the bowl opening-cross beam combination together with the arc-shaped connecting cross beam and the supporting shell. The method is characterized in that: the space reserved in the middle of the arc-shaped connecting beam is used for arranging a combination body of a driving motor and a speed reducer and is suspended on the chassis longitudinal beam; the bowl mouth support shell supports the sprung mass through a leaf spring. The bowl mouth supports shell and wheel limit semi-axis sleeve pipe, and the stopper bottom plate links firmly through the bolt.

This axle changes traditional integral axle housing into both sides arc combination formula supporting beam, and whole axle can adopt the syllogic structure. The outer axle sleeve, the brake bottom plate and the bowl opening supporting shell are connected through flanges, the inner arc-shaped connecting beam is respectively connected with two side faces of the bowl opening supporting shell through bolts, a two-section structure can also be adopted, the bowl opening supporting shell and the arc-shaped connecting beam are made into an integrated bowl opening-beam combination body, and the bowl opening beam combination body is fixedly connected with the wheel edge axle sleeve. The cross beams on the two sides respectively extend forwards and backwards to form an arc shape, and enough space is left for the middle part of the axle to arrange a combination body of the differential and the motor reducer. The motor reducer union is fixed between the chassis longitudinal beams through the motor suspension frame and extends to the lower side space in the middle, and swing half shafts with universal joints extend out of two sides of the differential respectively to transmit power to wheels and normally transmit power when the wheels jump. The universal joint outside the half shaft is arranged in the inner space of the bowl mouth. And a bearing is additionally arranged between the wheel-side half shaft and the axle shells at the two ends to be used as a middle support of the half shaft, so that collision between the half shaft and the shells is prevented. The half shaft and the wheel hub are connected by adopting: the wheel edge half shaft and the flange plate are connected through splines, and the flange plate is connected with the hub through screws. The lower end of the shock absorber is fixedly connected with the arc-shaped connecting beam through a support.

The invention has the advantages that:

(1) the axle adopts an arc-shaped connecting beam structure, and the middle part of the axle is provided with enough space for arranging a motor reducer differential mechanism.

(2) The bowl mouth supports the shell, support sprung mass through the leaf spring on the one hand, on the other hand its inside space that leaves is used for the semi-axis through taking the universal joint, square bowl mouth inboard is circular can regard as linking firmly between the structure of ring flange and the inboard stopper bottom plate of wheel hub, consequently excessive distance between bowl mouth and the stopper bottom plate reduces greatly, the inboard universal joint of bowl mouth can be close to the interior disc of bowl mouth, make middle semi-axis length increase, under the same condition of the momentum of jumping about the wheel, the angle of beating when the wheel is beated of messenger's middle semi-axis reduces, overall structure is also very compact.

(3) The three sections are fixedly connected respectively, so that the processing and the assembly are convenient.

(4) And the arc-shaped connecting beam and the bowl opening supporting shell are integrated, and the integrated bowl opening-beam combination body and the half-shaft sleeve are fixedly connected. With the bowl mouth support shell, the processing of crossbeam integral type is connected to the arc, changes in the axiality of guaranteeing two wheels.

(5) The inner side of the bowl opening supporting shell is provided with a bearing hole, and the mounting bearing plays a supporting role to prevent collision and friction between the half shaft and the shell.

Description of the drawings:

FIG. 1 is a schematic view of a bowl-mouth beam split electric drive assembly according to the present invention.

FIG. 2 is a bottom view of the bowl beam split electric drive assembly of the present invention.

FIG. 3 is a schematic view of a bowl-shaped cross beam split axle structure according to the present invention.

FIG. 4 is a top view of the bowl beam breakaway axle of the present invention.

FIG. 5 is a schematic view of a bowl mouth support shell according to the present invention.

FIG. 6 is a schematic view of the bowl-mouth beam integrated electric drive assembly of the present invention.

FIG. 7 is a schematic view of a bowl-mouth beam integrated axle structure of the present invention.

FIG. 8 is a schematic view of the integrated bowl-arc beam combination of the present invention.

FIG. 9 is a schematic view of the half-shaft structure of the present invention.

Reference numerals are used.

1	Plate spring	12	Outboard half axle
				2	Wheel hub	13	Outer universal joint
3	Motor suspension frame	14	Middle half shaft
				4	Arc-shaped connecting beam	15	Inner universal joint
5	Bowl mouth supporting shell	16	Flange plate
				6	Plate spring seat	17	Semi-axis sleeve
7	Bolt on horse	18	Shock absorber
				8	Electric machine	19	Differential gear
9	Speed reducer	20	Bearing assembly
				10	Chassis longitudinal beam	21	Integrated bowl mouth-beam combination body
11	Half shaft	22	Inboard semi-axis

Detailed description of the preferred embodiments.

See the drawings.

A bowl-mouth cross beam separated sprung integrated electric drive assembly structure is shown in figure 1 and comprises a bowl-mouth cross beam separated axle structure, a hub 2, a motor 16, a speed reducer 9, a differential 19, a plate spring 1 and a chassis longitudinal beam 10. The bowl-opening beam separated axle framework is shown in figure 3 and comprises an arc-shaped connecting beam 4, a bowl-opening supporting shell 5, a wheel-side half-shaft sleeve 17, a half shaft 11 and a flange plate 16. The motor reducer combination is fixedly suspended on a chassis longitudinal beam 10 through a motor suspension frame 3, and the chassis longitudinal beam 10 presses on the upper plane of a bowl opening 5 of an axle framework through a plate spring 1. The arc connecting beam is fixedly connected with two side faces of the bowl mouth supporting shell 5 through bolts, the arc connecting beam is of a hollow square steel structure, two ends of the arc connecting beam are fixed through the bolts, and steel plates can be filled into the hollow inner sides of the fixed positions of the two ends of the square steel and then welded to enhance the bearing capacity of the beam. The cross beam adopts an arc structure, so that enough space is reserved in the middle of the axle for arranging the differential 19, the speed reducer 9 and the motor 8. Half shafts 11 with universal joints extending out of both ends of the differential 19 penetrate through the inner side of the bowl opening and extend into a wheel side half shaft sleeve 17 on the inner side of the wheel hub. As shown in fig. 9, the outer half shaft 12 is fixed to the flange 16 by a spline mechanism, and the flange 16 is connected to the hub 2 by a bolt, so as to transmit the driving torque of the motor to the hub. As shown in FIG. 5, the inner end of the bowl support shell is provided with a bearing hole for mounting a bearing 20 as an intermediate support with a universal joint half shaft. The upper end of the shock absorber 18 is fixedly connected with the longitudinal beam of the chassis, and the lower end of the shock absorber is connected with the arc-shaped connecting beam 4 through a bracket.

A bowl-opening beam integrated sprung integrated electric drive assembly is shown in figure 6 and comprises a bowl-opening beam integrated axle, a hub 2, a motor 16, a speed reducer 9, a differential mechanism 19, a plate spring 1 and a chassis longitudinal beam 10. The bowl-mouth beam separated axle framework of the invention is shown in figure 7 and comprises an integrated bowl-mouth beam combination 21, a half-shaft sleeve 17, a half shaft 11 and a flange 16. The motor reducer combination is fixed on a chassis longitudinal beam 10 through a motor suspension frame 3, and the chassis longitudinal beam 10 is pressed on the upper plane of a bowl opening of the integrated bowl opening-cross beam combination 21 through a plate spring 1. An integrated bowl-mouth beam combination 21, see fig. 8, is formed by machining a bowl-mouth support shell and an arc-shaped connecting beam on a plate. The connecting beam is opened towards the front side and the rear side in an arc shape, and a differential 19, a speed reducer 9 and a motor 8 are arranged in the middle of the axle in a space manner. As shown in FIG. 7, the half-shafts 11 with universal joints extending from both ends of the differential 19 pass through the inside of the bowl of the integrated bowl-beam combination and into the half-shaft sleeve 17 inside the hub. As shown in fig. 9, the outer half shaft 12 is fixed to the flange 16 by a spline mechanism, and the flange 16 is connected to the hub 2 by a bolt, so as to transmit the driving torque of the motor to the hub. As shown in FIG. 5, the bowl-shaped inner end of the integrated bowl-shaped cross beam combination 21 is provided with a bearing hole for mounting a bearing 20, and the bearing is used as a middle support with a universal joint half shaft. The upper end of the shock absorber 18 is fixedly connected with the chassis longitudinal beam, and the lower end of the shock absorber is connected with the integrated bowl mouth-beam combination body 21 through a support.