CN201841925U - Front driving axle for an ultra-micro low-speed full electric automobile - Google Patents

Abstract

The invention relates to a front drive axle for an ultra-miniature low-speed pure electric vehicle, which belongs to the technical field of electric vehicles. Including the front axle girder, the motors are arranged symmetrically on the front axle girder, one end of the two motors is connected, and the other end is fixedly connected to the transmission, the output end of the transmission is connected to the universal transmission device through a spline, and the other end of the universal transmission device is socketed with a steering knuckle Finally, the rim connection flange is connected by splines, and the brake disc is fixedly connected to the rim connection flange. The upper end of the steering knuckle is inserted into the shock absorber, and the lower end is connected to the lower swing arm through the set ball pin. The steering knuckle arm is set through the set The ball pin connects the steering gear. The utility model: the lightweight front drive axle adopts a large number of light materials and simplified structure design, so that the weight of the whole front axle is less than 120Kg; the power transmission path is short, and the transmission efficiency is high; the front drive of the double motor makes the axle load distribution of the whole vehicle It is more reasonable and has good steering performance; the simplified design makes the space of the front cabin occupied by the front drive axle small and maximizes the space of the passenger compartment.

Description

A front drive axle for an ultra-miniature low-speed pure electric vehicle

technical field

The utility model belongs to the technical field of electric vehicles, in particular to a front drive axle for an ultra-miniature low-speed pure electric vehicle. the

Background technique

At present, the research and development of ultra-miniature low-speed pure electric vehicles in China is still in its infancy. The electric vehicles that have appeared drive the front axles also use motors to directly replace the conventional car engines for driving, and no other adjustments have been made. In terms of chassis performance, none of them can meet the requirements of ultra-miniature low-speed pure electric vehicles. Therefore, how to develop a light-duty, simple-structured front drive system has become one of the urgent problems to be solved in the development of ultra-miniature electric vehicles. the

Utility model content

Aiming at the problems existing in the prior art, the purpose of this utility model is to provide a light-duty ultra-miniature low-speed pure electric vehicle with a power transmission axle system with front and front drive arrangement, which overcomes the heavy weight and volume of the traditional car front drive axle system. Huge, complex structure and other shortcomings that cannot be directly adopted by ultra-miniature low-speed pure electric vehicles. the

The front drive axle for an ultra-miniature low-speed pure electric vehicle comprises a front axle girder, which is characterized in that motors are arranged symmetrically on the front axle girder, two motors are connected at one end, and the other ends are respectively fixedly connected to the transmission. The output end is connected to the universal transmission device through a spline, and the other end of the universal transmission device is sleeved with a steering knuckle, and then connected to the rim connection flange through a spline, and the brake disc is fixedly connected to the rim connection flange, and the upper end of the steering knuckle is inserted into the Connect the shock absorber, the lower end is connected to the lower swing arm through the set ball pin, and the steering knuckle arm is connected to the steering gear through the set ball pin. the

The above-mentioned front drive axle for an ultra-miniature low-speed pure electric vehicle is characterized in that a motor suspension support is fixedly arranged at the bottom of the motor housing, and the motor suspension support is fixed on the front axle girder through a suspension rubber block. the

The front drive axle for an ultra-miniature low-speed pure electric vehicle is characterized in that the transmission is a planetary gear reducer. the

The front drive axle for ultra-miniature low-speed pure electric vehicles is characterized in that a wheel hub bearing is arranged between the steering knuckle and the rim connecting flange. the

The front drive axle for an ultra-miniature low-speed pure electric vehicle is characterized in that tires and rims are installed on the rim connecting flange. the

The front drive axle for an ultra-miniature low-speed pure electric vehicle is characterized in that the steering knuckle is made of aluminum alloy material. the

The above-mentioned front drive axle for an ultra-miniature low-speed pure electric vehicle is characterized in that the lower end of the shock absorber is inserted into the steering knuckle, fastened by bolts on the steering knuckle, and the upper end is connected with the vehicle body. the

The front drive axle for an ultra-miniature low-speed pure electric vehicle is characterized in that the lower swing arm has an A-shaped structure, and the other end of the lower swing arm is connected to the vehicle frame through a set bolt. the

The above-mentioned front drive axle for an ultra-miniature low-speed pure electric vehicle is characterized in that the steering gear is fixed to the vehicle body through a clamp, and both ends are connected to the steering knuckle arm through ball pins. the

The beneficial effects of the utility model are: 1. The lightweight front drive axle adopts a large number of lightweight materials and simplified structural design, so that the weight of the whole front axle is less than 120Kg, which fills the gap in the design of the front drive axle of ultra-miniature low-speed pure electric vehicles; 2. The power transmission path is short and the transmission efficiency is high; 3. The dual-motor front-wheel drive makes the axle load distribution of the vehicle more reasonable and the steering performance is good; 4. The simplified design makes the front cabin space occupied by the front drive axle small, making the passenger compartment more comfortable. Space is maximized. the

Description of drawings

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

Fig. 2 is the side view of Fig. 1;

Fig. 3 is a partial cross-sectional structural schematic diagram of the utility model. the

In the figure: 1-motor; 2-steering gear; 3-transmission; 4-universal transmission; 5-lower arm; 6-shock absorber; 7-steering knuckle; 8-brake disc; Lan; 10-wheel bearing. the

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings. the

As shown in the figure, a front drive axle for an ultra-miniature low-speed pure electric vehicle includes a front axle girder, and a motor 1 is symmetrically arranged on the front axle girder. 3. The motor 1 and the transmission 3 together constitute the main body of the drive system. The bottom of the motor 1 is fixedly provided with a motor suspension support, and the motor suspension support is suspended on the front axle girder through the provided rubber blocks, and the entire drive system is supported on the front axle girder by four suspension rubber blocks. The output end of the transmission 3 is connected to the universal transmission device 4 through a spline, and the other end of the universal transmission device 4 is socketed with a steering knuckle 7, and then connected to the rim connection flange 9 through a spline, between the steering knuckle 7 and the rim connection flange 9 The hub bearing 10 is set, the brake disc 8 is fixedly connected to the rim connecting flange 9, the tire and the rim are installed on the rim connecting flange 9, and the universal transmission 4 drives the rotation of the rim connecting flange 9, so that the tire rotates. The lower end of the shock absorber 6 is directly inserted into the steering knuckle 7, and the shock absorber 6 is fixed by locking the bolts on the steering knuckle 7, and the upper end is connected with the vehicle body by a small pillar assembly. The steering gear 2 is fixed on the vehicle body through a clamp, and the two ends are connected with the steering knuckle 7 arms through ball pins. One end of the lower swing arm 5 is connected with the steering knuckle 7 through a ball pin, and the other end is connected with the vehicle frame through a bolt. the

The utility model overcomes the shortcomings of the traditional car front drive axle system that cannot be directly adopted by ultra-miniature low-speed pure electric vehicles due to its heavy weight, bulky size, and complex structure. Differential speed; the motor suspension support is processed at the bottom of the motor 1 housing, and the entire drive system is supported on the front axle girder through 4 rubber suspensions, and the power is transmitted to the wheels through the universal transmission device; 2) The suspension system adopts an improved wheat The traditional McPherson suspension has multiple thrust rods in the horizontal and vertical directions. The thrust rod of the utility model adopts the design of the A-shaped lower swing arm 5, which can simultaneously play the role of the horizontal and vertical thrust rods; due to the ultra-miniature low-speed pure The electric vehicle has low speed, light weight, and small roll when turning. The utility model adopts the design of removing the horizontal stabilizer bar; the design of the spring shock absorber 6 absorbs the respective advantages of the automobile shock absorber and the motorcycle shock absorber. 6 adopts the small size and simple structure design of the motorcycle shock absorber, the lower end is installed on the steering knuckle 7 by plug-in, the upper end is connected with the vehicle body by a small-sized upper strut assembly, and the spring adopts the automobile spring rigidity design, and reduces the spring diameter and In this way, the modified McPherson suspension is greatly reduced in terms of weight and number of rods; 3) The steering knuckle and front axle braking system of traditional cars are mostly forged with steel materials Or casting molding, both in terms of weight and volume and braking force requirements far exceed the design requirements of miniature low-speed electric vehicles. The steering knuckle 7 of the utility model is formed by die-casting of aluminum alloy material, and the brake disc 8 is formed by punching and forming of a thinned steel plate, which has the effect of reducing weight. the

Claims (9)

1. A front drive axle for an ultra-miniature low-speed pure electric vehicle, comprising a front bridge girder, characterized in that a motor (1) is symmetrically arranged on the front bridge girder, two motors (1) are connected at one end, and the other ends are respectively fixed Connect the transmission (3), the output end of the transmission (3) is connected to the universal transmission (4) through a spline, and the other end of the universal transmission (4) is socketed with a steering knuckle (7) and connected to the rim through a spline connection method flange (9), the rim connection flange (9) is fixedly connected to the brake disc (8), the upper end of the steering knuckle (7) is inserted into the shock absorber (6), and the lower end is connected to the lower swing arm ( 5), the arm of the steering knuckle (7) is connected to the steering gear (2) through the set ball pin. 2. A kind of ultra-miniature low-speed pure electric vehicle front drive axle as claimed in claim 1, it is characterized in that described motor (1) casing bottom is fixedly provided with motor suspension support, and motor suspension support passes through the The rubber block suspension is arranged on the front axle girder. 3. A kind of ultra-miniature low-speed pure electric vehicle front drive axle as claimed in claim 1, is characterized in that described speed changer (3) is planetary gear speed reducer. 4. A front drive axle for an ultra-miniature low-speed pure electric vehicle as claimed in claim 1, characterized in that a hub bearing (10) is arranged between the steering knuckle (7) and the rim connecting flange (9). 5. the front drive axle of a kind of ultra-miniature low-speed pure electric vehicle as claimed in claim 1, is characterized in that tire and rim are installed on the described rim connecting flange (9). 6. The front drive axle of a kind of ultra-miniature low-speed pure electric vehicle as claimed in claim 1, wherein said steering knuckle (7) is made of aluminum alloy material. 7. The front drive axle of a kind of ultra-miniature low-speed pure electric vehicle as claimed in claim 1, characterized in that the lower end of the shock absorber (6) is plugged and arranged on the steering knuckle (7), and through the steering knuckle ( 7) The upper bolts are fastened, and the upper end is connected with the vehicle body. 8. A kind of ultra-miniature low-speed pure electric vehicle front drive axle as claimed in claim 1, it is characterized in that described lower swing arm (5) is an A-shaped structure, and the lower swing arm (5) other end passes through the bolt that is set and Frame connection. 9. A kind of ultra-miniature low-speed pure electric vehicle front drive axle as claimed in claim 1, it is characterized in that described steering gear (2) is fixed on vehicle body by the hoop that is provided with, and two ends pass ball pin and steering knuckle (7) Arm connection.

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