CN220500474U - Vehicles and chassis - Google Patents

Abstract

The present application relates to the field of vehicles, and in particular to a vehicle and a chassis. The chassis provided by this application includes a front-front independent suspension system, a rear independent suspension system, and a low-floor frame system connected between the two; the front-front independent suspension system includes a left drive assembly and a right drive assembly. and a motor reducer assembly connected between the left drive assembly and the right drive assembly and used to drive both; the reducer assembly includes a reducer body and a drive motor connected to the input shaft of the reducer body. The chassis provided by this application increases the wheelbase in a limited space. When the chassis is applied to a micro bus, it can increase the length of the low floor area, thereby increasing the passenger capacity of the micro bus.

Description

Vehicles and chassis

Technical field

The present application relates to the field of vehicles, and in particular, to a vehicle and a chassis.

Background technique

At present, the city's multi-dimensional transportation system with rail transit as the main body, conventional public transportation as the basis, and microcirculation public transportation as the supplement is becoming more and more perfect.

In order to further promote the efficient connection of central cities, surrounding towns, new cities and new districts, subway commuting, community connections and other networks, improve the level of public transportation services, and improve the travel environment, bus models have changed from the original "small to large" to the current With the “big to small” transformation, the market demand for microcirculation buses is huge. Various bus companies have successively launched 6-meter pure electric micro buses to solve the "first one kilometer and last kilometer" connection problem between residential communities and rail transit lines. The 6-meter pure electric microbus is small in length and has limited interior space. The chassis generally uses a leaf spring suspension and hydraulic braking system with a simple structure and few parts. Taking into account the convenience of getting on and off the vehicle and the layout of the vehicle, a one-step low entrance chassis is selected. The layout method may be leaf spring suspension, pneumatic brake, or two-stage step layout. The leaf spring suspension has a large offset frequency and poor ride comfort, especially when passing speed bumps without load. More importantly, the low entrance chassis has a short low floor area, a small suitable standing area, and insufficient transportation capacity during peak hours.

Utility model content

This application provides a vehicle and a chassis to solve the problems of small passenger capacity and tight transportation capacity of micro buses.

In a first aspect, the application provides a chassis, including a front-front independent suspension system, a rear independent suspension system, and a low-floor frame system connected between the two; the front-front independent suspension system includes a left drive assembly The motor reducer assembly includes a reducer body and an input shaft connected to the reducer body. of drive motor.

In some embodiments, mounting brackets are fixed to the sides of both the reducer body and the drive motor, and the mounting bracket is fixed to the front end of the low-floor frame system.

In some embodiments, the front-wheel drive independent suspension system is an air suspension system, and the front-wheel drive independent suspension system includes a first air bag assembly and a first shock absorber assembly; a pair of first air bag assemblies are connected respectively Between the upper ends of the left drive assembly and the right drive assembly, between the lower end of the left drive assembly and the side of the first airbag assembly at its upper end, between the lower end of the right drive assembly and the side of the first airbag assembly at its upper end Both are connected to the first shock absorber assembly.

In some embodiments, the front-wheel-drive independent suspension system further includes a first transverse stabilizer bar assembly, the two ends of the first transverse stabilizer bar assembly are respectively connected to the left drive assembly and the right drive assembly, and the middle section is connected to the low-floor vehicle. rack system.

In some embodiments, the rear independent suspension system is an air suspension system, and the rear independent suspension system includes a second air bag assembly, a left axle assembly, a right axle assembly, a steering tie rod assembly, and a second shock absorber. assembly and subframe assembly; a pair of second airbag assemblies are connected to the upper ends of the left axle assembly and the right axle assembly respectively; between the lower end of the left axle assembly and the second airbag assembly at its upper end, the right The lower end of the axle assembly and the second airbag assembly at the upper end are connected to the second shock absorber assembly; the middle part of the left axle assembly and the middle part of the right axle assembly are connected to the subframe through a fork arm ball joint. Assembly connection; the steering tie rod assembly is connected between the left axle assembly and the subframe assembly, and between the right axle assembly and the subframe assembly.

In some embodiments, the rear independent suspension system further includes a second transverse stabilizer bar assembly. Both ends of the second transverse stabilizer bar assembly are respectively connected between the left axle assembly and the right axle assembly, and the middle part is connected to the low floor. Frame system.

In some embodiments, the top of the low-floor frame system forms a low-floor area that projects rearwardly and extends over the middle of the rear independent suspension system.

In some embodiments, the chassis is provided with one step.

In a second aspect, the present application provides a vehicle, which includes a body and any of the above chassis, and the body is connected above the chassis.

Further, the vehicle is a new energy bus.

The above technical solution provided by the embodiment of the present application has the following advantages compared with the existing technology: the chassis is composed of a front-front independent suspension system, a rear independent suspension system and a low-floor frame system. The power part is set to the front. The motor reducer assembly relies on the drive motor to directly drive the reducer body and transmits it to the left drive assembly and the right drive assembly. The transmission shaft between the power part and the reducer body is cancelled, and the power part moves forward. , thus increasing the length of the low-floor frame system on the premise that the total length of the chassis is fixed, and the area of the low-floor area formed above the low-floor frame system increases, thereby increasing the passenger capacity of vehicles/minibuses using this chassis and easing the tight transportation capacity. .

Description of the drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.

In order to more clearly explain the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to describe the embodiments or the prior art. Obviously, for those of ordinary skill in the art, It is said that other drawings can be obtained based on these drawings without exerting creative labor.

One or more embodiments are exemplified by the pictures in the corresponding drawings. These illustrative illustrations do not constitute limitations to the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings are not intended to be limited to scale.

Figure 1 is a top view of the chassis provided by the embodiment of the present application;

Figure 2 is a front view of the chassis in Figure 1;

Figure 3 is a schematic diagram of the front-mounted front-wheel drive independent suspension system in Figure 1;

Figure 4 is a cross-sectional view along line A-A of Figure 3;

Figure 5 is a schematic diagram of the rear independent suspension system in Figure 1;

Figure 6 is a B-B cross-sectional view of Figure 5 .

Explanation of reference symbols:

1. Front front-wheel drive independent suspension system; 2. Low-floor frame system; 3. Rear independent suspension system; 4. Tire assembly; 5. Left drive assembly; 6. Right drive assembly; 7. Motor deceleration 71. Drive motor; 72. Reducer body; 8. First airbag assembly; 9. First shock absorber assembly; 10. First transverse stabilizer assembly; 11. Left axle assembly; 12. Right axle assembly; 13. Steering tie rod assembly; 14. Second shock absorber assembly; 15. Second air bag assembly; 16. Second transverse stabilizer bar assembly; 17. Subframe assembly ; 18. Installation bracket.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments These are part of the embodiments of this application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the application. Furthermore, this application may repeat reference numbers and/or letters in different examples. This repetition is for purposes of simplicity and clarity and does not by itself indicate a relationship between the various embodiments and/or arrangements discussed.

For ease of description, spatial relative terms may be used herein to describe the relative position or movement of one element or feature relative to another element or feature as shown in the figures. These relative terms are, for example, "internal", " "Outside", "inside", "outside", "under", "under", "above", "above", "front", "back", etc. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the position of the device in the figure is flipped, the posture changes, or the state of motion changes, then these directional indications will also change accordingly, for example: described as "under other elements or features" or "under other elements" Elements that are "below" or "below" the other elements or features will then be oriented "above" or "above" the other elements or features. Thus, the example term "below" may include an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In order to solve the problems of insufficient passenger capacity and tight transportation capacity of micro buses during peak periods in the existing technology, this application provides a chassis and a vehicle using the chassis, which increases the length and area of the low floor area inside the micro bus using the chassis, and improves the efficiency of the micro bus. It increases the passenger capacity of micro buses, thereby effectively alleviating the problem of tight transportation capacity during peak hours.

Figures 1 and 2 are schematic diagrams of a chassis provided by an embodiment of the present application. The chassis is mainly connected by a front-mounted front-drive independent suspension system 1 at the front end, a low-floor frame system 2 in the middle, and a rear independent suspension system 3 at the rear end. The front and rear ends of the low-floor frame system 2 are connected to the front front-wheel drive independent suspension system 1 and the rear independent suspension system 3 respectively. Among them, the front front-wheel drive independent suspension system 1 includes a motor reducer assembly 7 and a left drive assembly 5 and a right drive assembly 6 that are generally symmetrically arranged. The motor reducer assembly 7 cancels the transmission shaft part and drives the motor 71 The output shaft is directly connected to the input shaft of the reducer body 72, and the output shaft of the reducer body 72 is connected to the left drive assembly 5 and the right drive assembly 6 through a differential.

In the above embodiment, the front-wheel drive of the vehicle is realized through the setting of the motor reducer assembly 7, while the transmission shaft is eliminated, and the drive motor 71 and the reducer body 72 are directly connected, thereby realizing the forward movement of the power part and maintaining the overall length of the chassis. Under the premise of remaining unchanged, the length of the low-floor frame system 2 is increased, thereby increasing the length and area of the low-floor area of the vehicle using this chassis, effectively increasing the passenger capacity.

In a further embodiment, both the front front-wheel drive independent suspension system 1 and the rear independent suspension system 3 adopt an air suspension system. Compared with the traditional leaf spring suspension system, the full-load bias frequency is about 1.3Hz, and the bias frequency is reduced. , the riding comfort is improved.

Among them, the side of the reducer assembly, that is, the side of the reducer body 72 and the drive motor 71 is connected to the mounting bracket 18. The reducer body 72 and the drive motor 71 are fixed to the front end of the low-floor frame system 2 through the mounting bracket 18. The mounting bracket Vibration-absorbing pads are usually provided between 18 and the low-floor frame system 2. The front front-wheel drive independent suspension system 1 includes a pair of first air bag assemblies 8 and a pair of first shock absorber assemblies 9. Threaded holes are provided at the upper ends of the left drive assembly 5 and the right drive assembly 6. The airbag assembly 8 is respectively arranged on the upper end of the left drive assembly 5 and the right drive assembly 6 and is connected and fixed through bolts and threaded holes; the middle of the left drive assembly 5 and the right drive assembly 6 is connected by a flange and a reducer assembly. Threaded connection. The lower ends of the left drive assembly 5 and the right drive assembly 6 are connected to the lower end of the first shock absorber assembly 9 through the mounting holes, and the top end of the first shock absorber assembly 9 is connected to the first air bag assembly 8 close to the chassis. Below the center side.

In order to improve the overall stability of the chassis, the front-wheel drive independent suspension system 1 is usually also provided with a first transverse stabilizer assembly 10. Both ends of the first transverse stabilizer assembly 10 are threadedly connected to the left drive assembly 5 and the right drive assembly 5 respectively. In the reserved tapered hole of the drive assembly 6, the middle part of the first transverse stabilizer assembly 10 is threadedly connected with the low floor frame system 2.

The rear independent suspension system 3 includes a left axle assembly 11, a right axle assembly 12, a steering tie rod assembly 13, a second shock absorber assembly 14, a second air bag assembly 15, and a second transverse stabilizer bar assembly 16 , subframe assembly 17 components. The upper ends of the left bridge assembly 11 and the right bridge assembly 12 are threadedly connected to the lower ends of the second airbag assembly 15 above them through threaded holes, and the lower ends of the left bridge assembly 11 and the right bridge assembly 12 are connected to the lower ends of the left bridge assembly 11 and the right bridge assembly 12 through the mounting holes. The lower mounting hole of the second shock absorber assembly 14 is threadedly connected, and the middle of the left axle assembly 11 and the right axle assembly 12 is threadedly connected to the subframe assembly 17 through a fork arm ball joint. Both sides of the second transverse stabilizer assembly 16 are threadedly connected with reserved tapered holes of the left axle assembly 11 and the right axle assembly 12 respectively. The steering tie rod assembly 13 is connected between the left axle assembly 11 and the subframe assembly 17, and between the right axle assembly 12 and the subframe assembly 17 to lock the wheel steering and ensure accurate suspension positioning parameters.

The front front-wheel drive suspension system passes through the bolts above the first air bag assembly 8, the fork ball joints of the left drive assembly 5 and right drive assembly 6, the mounting holes above the first shock absorber assembly 9, and the first transverse stabilizer bar. The middle part of the assembly 10 is threadedly connected with the low floor frame system with 2 bolts.

The rear independent suspension system 3 passes through the bolts above the second air bag assembly 15, the wishbone ball joint above the left axle assembly 11 and the right axle assembly 12, the mounting holes above the second shock absorber assembly 14, and the second lateral stabilizer The middle part of the rod assembly 16 is threadedly connected to the low floor frame system with 2 bolts.

The tire assembly 4 is threadedly connected to the front front-wheel drive independent suspension system 1 and the rear independent suspension system 3 through bolts and nuts, and together constitute the chassis of the present application. A low floor area is formed above the low floor frame system 2. The low floor area protrudes and extends above the middle part of the rear independent suspension system 3. The low floor area extends from the rear of the front front drive independent suspension system 1 to the rear independent suspension system. Above the middle part of rack system 3, the chassis adopts a one-level step setting with a step height of 320mm, which is convenient for getting on and off the bus; for a chassis suitable for a micro pure electric bus with a total length of 6 meters, the front and rear wheelbase of the chassis can reach 4050mm, and the total length of the low floor area It can reach 3300mm, which significantly increases the passenger capacity of vehicles using this chassis.

This application also provides a vehicle, which uses the chassis provided in the above embodiment. The vehicle also includes a body, and the body is installed above the chassis. Other parts of the vehicle can be configured with reference to the existing technology.

Specifically, the vehicle is a six-meter pure electric bus. The vehicle and chassis adopt an air suspension system. The full-load offset frequency is about 1.3Hz. The offset frequency is reduced and the ride comfort is improved. The chassis adopts a one-level step arrangement with a step height of 320mm, a front and rear wheelbase of up to 4.05m, and a low floor area of up to 3.3m, which greatly increases the standing area space and improves transportation capacity during peak hours. The above-mentioned vehicle has a large wheelbase, short rear overhang, and balanced axle load distribution on the front and rear axles. The front and rear axles can use single tires, saving two tires per vehicle. Use pneumatic brakes to increase braking strength and improve vehicle braking safety.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. The terms "comprises", "includes", "contains" and "having" are inclusive and thus indicate the presence of stated features, steps, operations, elements and/or parts but do not exclude the presence or addition of one or Various other features, steps, operations, elements, components, and/or combinations thereof. The method steps, procedures, and operations described herein are not to be construed as requiring that they be performed in the particular order described or illustrated, unless an order of performance is expressly indicated. It should also be understood that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections shall not be referred to as restricted by these terms. These terms are only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

The above descriptions are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be practiced in other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims (10)

1. A chassis, characterized in that it includes a front-front independent suspension system, a rear independent suspension system and a low-floor frame system connected between the two; the front-front independent suspension system includes a left-hand drive assembly, a right drive assembly and a motor reducer assembly connected between the left drive assembly and the right drive assembly and used to drive both; the motor reducer assembly includes a reducer body and a The input shaft of the reducer body is connected to the drive motor. 2. The chassis according to claim 1, wherein the reducer body and the drive motor are both fixed with mounting brackets on their sides, and the mounting bracket is fixed to the low floor frame system. Front end. 3. The chassis according to claim 1, wherein the front-mounted front-wheel drive independent suspension system is an air suspension system, and the front-mounted front-wheel drive independent suspension system includes a first air bag assembly and a first shock absorber. a pair of first airbag assemblies respectively connected to the upper ends of the left drive assembly and the right drive assembly, the lower end of the left drive assembly and the first airbag assembly at its upper end The first damper assembly is connected between one side of the right drive assembly and between the lower end of the right drive assembly and the upper end of the first airbag assembly. 4. The chassis according to claim 2, wherein the front-mounted front-wheel drive independent suspension system further includes a first transverse stabilizer bar assembly, and both ends of the first transverse stabilizer bar assembly are respectively connected to the The left drive assembly and the right drive assembly are connected to the low floor frame system in the middle. 5. The chassis according to claim 1, wherein the rear independent suspension system is an air suspension system, and the rear independent suspension system includes a second airbag assembly, a left axle assembly, and a right axle assembly. It consists of a steering tie rod assembly, a second shock absorber assembly and a subframe assembly; a pair of second airbag assemblies are respectively connected to the upper ends of the left axle assembly and the right axle assembly; The second airbag assembly is connected between the lower end of the left axle assembly and the second airbag assembly at its upper end, and between the lower end of the right axle assembly and the second airbag assembly at its upper end. Vibrator assembly; the middle part of the left axle assembly and the middle part of the right axle assembly are connected to the auxiliary frame assembly through a fork arm spherical joint; the left axle assembly and the auxiliary frame assembly The tie rod assembly is connected between the frame assemblies and between the right axle assembly and the subframe assembly. 6. The chassis according to claim 5, wherein the rear independent suspension system further includes a second transverse stabilizer assembly, and both ends of the second transverse stabilizer assembly are respectively connected to the left Between the axle assembly and the right axle assembly, the middle part is connected to the low floor frame system. 7. The chassis according to any one of claims 1 to 6, characterized in that a low floor area is formed above the low floor frame system, and the low floor area protrudes rearward and extends to the rear independent suspension. above the middle of the rack system. 8. The chassis according to claim 1, characterized in that the chassis is provided with one step. 9. A vehicle, characterized in that it includes a body and a chassis according to any one of claims 1 to 8, and the body is connected above the chassis. 10. The vehicle according to claim 9, characterized in that the vehicle is a new energy bus.