CN205818906U - Electric commercial vehicle power assembly arrangement - Google Patents

Abstract

The utility model discloses a kind of electric commercial vehicle power assembly arrangement, motor assembly is positioned at the left side of transmission assembly, left mounting assembly is installed at the top of motor assembly left end, right mounting assembly is installed at the top of transmission assembly right-hand member, front-suspension assembly is installed at the top of transmission assembly front end, front-suspension assembly, right mounting assembly and left mounting assembly are all connected with vehicle body, arrange two outfans in left and right in the bottom of transmission assembly front end, the outfan of transmission assembly is connected with the inner of jack shaft.This utility model is reasonable in design, implements easily, easy to assembly, axle load distributed uniform, and transmission efficiency is high, and trailing wheel, as driving wheel, is conducive to promoting the grade climbing performance of the relatively large electric motor car of kerb weight, is particularly well-suited to commercial car.Meanwhile, be effectively reduced unsprung mass, substantially increase back axle bearing capacity, and back axle and electrical machmary maintenance convenient, the road clearance is big, car load good by property.

Description

Electric commercial vehicle powertrain layout structure

technical field

The utility model belongs to the technical field of electric vehicles, and in particular relates to a power assembly arrangement structure of an electric commercial vehicle.

Background technique

At present, the layout methods of pure electric vehicles in the industry include mid-mounted rear drive, front front drive, front rear drive, mid-mounted front drive, rear rear drive with the motor and rear axle integrated, and front rear drive with the motor and rear axle integrated. Types such as front drive, the deficiency of prior art is:

1. Center-mounted rear drive, center-mounted front-wheel drive and front-rear drive: the axle load is evenly distributed, but the transmission path is long and the transmission efficiency is low. Not only is the bottom of the car not conducive to the layout of the entire battery, but the space in the vehicle compartment is also reduced. Not conducive to the improvement of comfort.

2. Front front drive: evenly distributed axle load, high transmission efficiency, smooth bottom of the car is conducive to the improvement of the layout of the whole battery and comfort, the vehicle has good handling performance, and many parts can be shared with fuel vehicles, but electric vehicles The mass is large, and the adhesion performance is poor when climbing, so it is not suitable for commercial vehicles with large curb weight.

3. Rear-mounted rear-drive and front-mounted front-drive of the motor and the rear axle: the axle load is evenly distributed, the transmission efficiency is high, and the smooth bottom of the car is conducive to the overall battery layout and comfort improvement, but the rear axle and the motor are integrated. The unsprung mass is heavy, the load capacity of the rear axle is low, the maintenance of the rear axle and the motor is difficult, and the ground clearance is small.

Utility model content

In view of the above-mentioned defects of the prior art, the technical problem to be solved by the utility model is to provide a power assembly arrangement structure of an electric commercial vehicle.

The technical scheme of the utility model is as follows: a power assembly layout structure of an electric commercial vehicle, including a motor assembly, a transmission assembly, a driving half shaft, a rear brake assembly, a leaf spring, a rear shock absorber assembly and a vehicle body, and its characteristics The positioning plate is fixed below the middle part of the leaf spring on the left and right sides, the positioning plates on the left and right sides are symmetrical, and the rear shock absorber assembly is connected between the positioning plate and the vehicle body; the motor assembly is located at the center of the transmission assembly. On the left side, the housing of the motor assembly is fixedly connected with the housing of the transmission assembly, and a first support is installed on the top of the left end of the motor assembly, and the first bracket is fixed on the first support. A left suspension assembly is installed on a bracket, a second support is installed on the top of the right end of the transmission assembly, a second bracket is fixed on the second support, and a right suspension assembly is installed on the second bracket. A third support is installed on the top of the front end of the transmission assembly, a third bracket is fixed on the third support, and a front suspension assembly is installed on the third bracket. The front suspension assembly, the right suspension Both the assembly and the left suspension assembly are connected with the vehicle body, the output shaft of the motor assembly extends into the transmission assembly, and is connected with the input end of the transmission assembly, and two left and right outputs are arranged at the bottom of the front end of the transmission assembly end, the output end of the transmission assembly is connected to the inner end of the drive half shaft, which is lower than the motor assembly, and the outer end of the drive half shaft passes through the second vertical plate on the positioning plate and the rear brake in turn Assembled floor.

With the above technical scheme, the motor assembly and the transmission assembly are arranged on the rear upper part of the rear axle cross tube, and both the motor assembly and the transmission assembly are higher than the center of the leaf spring, which effectively reduces the unsprung mass and greatly improves the The bearing capacity of the rear axle, and the maintenance of the rear axle and the motor is convenient, the ground clearance is large, and the traffic of the vehicle is good; It is beneficial to improve the climbing performance of electric vehicles with relatively large curb weight, especially suitable for commercial vehicles. The motor assembly and the transmission assembly are connected to the vehicle body through three suspension assemblies at the front, left end and right end. The space at the connection is large, which is convenient for disassembly and assembly, and has good stability.

In order to facilitate the installation of the rear shock absorber assembly and further improve the shock absorption performance and comfort, the rear shock absorber assembly is set with a high front and a low rear slope, the rear shock absorber assembly is close to the pressure plate assembly on the same side, and the rear The lower end of the shock absorber assembly is hinged with the middle part of the positioning plate, and the upper end of the rear shock absorber assembly is hinged with the vehicle body.

In order to facilitate processing and manufacture, reduce cost, ensure structural strength, and prevent deformation or damage, the positioning plate is formed by casting.

In order to facilitate mass production and reduce production costs, the supports and brackets used to install the suspension assembly are steel stamping parts.

Beneficial effects: the utility model has reasonable design, easy implementation, convenient assembly, uniform axle load distribution, high transmission efficiency, and the rear wheel is used as the driving wheel, which is beneficial to improve the climbing performance of electric vehicles with relatively large curb weight, and is especially suitable for commercial vehicles . At the same time, the unsprung mass is effectively reduced, the bearing capacity of the rear axle is greatly improved, and the maintenance of the rear axle and the motor is convenient, the ground clearance is large, and the trafficability of the whole vehicle is good.

Description of drawings

Fig. 1 is a schematic structural view of a specific embodiment of the present invention.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

As shown in Fig. 1, the leaf spring 5 is symmetrically arranged left and right, and leaf spring lugs 9 are installed at the front and rear ends of the leaf spring 5, and the leaf spring lug 9 is connected with the vehicle body. Positioning plates 8 are arranged below the left and right leaf springs 5 middle parts, and the positioning plates 8 are molded by casting.

As shown in Figure 1, a rear shock absorber assembly 7 is arranged between the positioning plate 8 and the vehicle body, and the rear shock absorber assemblies 7 on the left and right sides are symmetrical. The rear shock absorber assembly 7 is set with a high front and a low rear slope, the inclination angle of the rear shock absorber assembly 7 is determined according to actual needs, and the rear shock absorber assembly 7 is close to the pressure plate assembly 6 on the same side. The lower end of the rear shock absorber assembly 7 is hinged with the middle part of the positioning plate 8, and the upper end of the rear shock absorber assembly 7 is hinged with the vehicle body.

As shown in FIG. 1 , the opposite ends of the positioning plates 8 on the left and right sides are bent upward by 90° to form a first vertical plate 8 a, and the first vertical plates 8 a on the left and right sides are symmetrical. A reinforcing plate 8c is provided between the flat part of the positioning plate 8 and the first vertical plate 8a, and the reinforcing plate 8c is a right triangle. The first vertical plates 8a on the left and right sides are fixedly connected by the rear axle horizontal tube 10, the rear axle horizontal tube 10 is a steel circular tube, and the two ends of the rear axle horizontal tube 10 are welded with cast-formed first flanges 14. The first flange 14 is connected to the second flange correspondingly arranged on the first vertical plate 8a through bolts uniformly arranged on the circumference. The opposite ends of the positioning plates 8 on the left and right sides are bent upwards at 90° to form a second vertical plate 8b. The second vertical plates 8b on the left and right sides are symmetrical, and the second vertical plate 8b is located on the outside of the leaf spring 5 on the corresponding side, and The second vertical plate 8b is obliquely behind the first vertical plate 8a on the same side, and the rear brake assembly 4 is installed on the outside of the second vertical plate 8b, and the rear brake assemblies 4 on the left and right sides are symmetrical.

As shown in Figure 1, a motor assembly 1 and a transmission assembly 2 are arranged above the rear axle cross tube 10, the motor assembly 1 is located on the left side of the transmission assembly 2, and the housing of the motor assembly 1 and the transmission assembly 2 shells are fixedly connected together. A first support is installed on the top of the left end of the motor assembly 1, and the first bracket is fixed on the first support, and the left suspension assembly 11 is installed on the first bracket. A second support is installed on the top of the right end of the speed changer assembly 2, a second bracket is fixed on the second support, and a right suspension assembly 12 is installed on the second bracket. A third support is installed on the top of the transmission assembly 2 front end, a third bracket is fixed on the third support, and a front suspension assembly 13 is installed on the third bracket. The front suspension assembly 13, the right suspension assembly 12 and the left suspension assembly 11 are all connected with the vehicle body. The supports and brackets used to install the suspension assembly are all steel stamping parts, and the shapes of the supports and brackets can be adjusted according to actual needs, and will not be repeated here.

As shown in Figure 1, the output shaft of the motor assembly 1 extends into the transmission assembly 2 and is connected to the input end of the transmission assembly 2. Two left and right output terminals are arranged at the bottom of the front end of the transmission assembly 2. The transmission assembly The output end of 2 is connected to the inner end of the driving half shaft 3, the driving half shafts 3 on the left and right sides are symmetrical, and the driving half shaft 3 is lower than the motor assembly 1, and the outer end of the driving half shaft 3 passes through the second vertical plate in turn 8b and the base plate of the rear brake assembly 4 are connected with the rear wheel hub.

The preferred specific embodiments of the present utility model have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the utility model without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the scope of protection defined by the claims .

Claims (4)

1. An electric commercial vehicle power assembly layout structure, including motor assembly (1), transmission assembly (2), driving half shaft (3), rear brake assembly (4), leaf spring (5), rear The shock absorber assembly (7) and the vehicle body are characterized in that: a positioning plate (8) is fixedly arranged below the middle part of the leaf spring (5) on the left and right sides, and the positioning plates (8) on the left and right sides are symmetrical. (8) Connect the rear shock absorber assembly (7) with the vehicle body; the motor assembly (1) is located on the left side of the transmission assembly (2), and the housing of the motor assembly (1) and the transmission assembly The shells of (2) are fixedly connected together, and the first support is installed on the top of the left end of the motor assembly (1), the first bracket is fixed on the first support, and the left suspension is installed on the first bracket. Set the assembly (11), the top of the right end of the transmission assembly (2) is installed with a second support, the second support is fixed on the second bracket, and the right suspension assembly (12) is installed on the second bracket ), the top of the front end of the transmission assembly (2) is equipped with a third support, the third support is fixed on the third bracket, and the front suspension assembly (13) is installed on the third bracket. The suspension assembly (13), the right suspension assembly (12) and the left suspension assembly (11) are all connected to the vehicle body, and the output shaft of the motor assembly (1) extends into the transmission assembly (2) , and connected with the input end of the transmission assembly (2), two left and right output ends are arranged at the bottom of the front end of the transmission assembly (2), the output end of the transmission assembly (2) is connected with the inner end of the driving half shaft (3) connection, the drive half shaft (3) is lower than the motor assembly (1), and the outer end of the drive half shaft (3) passes through the second vertical plate (8b) on the positioning plate (8) and the rear brake in sequence The bottom plate of the assembly (4). 2. The powertrain layout structure of an electric commercial vehicle according to claim 1, characterized in that: the rear shock absorber assembly (7) is set with a high front and a low rear slope, and the rear shock absorber assembly (7) Close to the pressure plate assembly (6) on the same side, the lower end of the rear shock absorber assembly (7) is hinged with the middle part of the positioning plate (8), and the upper end of the rear shock absorber assembly (7) is hinged with the vehicle body. 3. The electric commercial vehicle powertrain layout structure according to claim 1 or 2, characterized in that: the positioning plate (8) is formed by casting. 4. The electric commercial vehicle powertrain layout structure according to claim 1, characterized in that: the support and the bracket for mounting the suspension assembly are steel stamping parts.