WO2020098432A1 - 底盘及纯电动城市客车 - Google Patents

底盘及纯电动城市客车 Download PDF

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Publication number
WO2020098432A1
WO2020098432A1 PCT/CN2019/110827 CN2019110827W WO2020098432A1 WO 2020098432 A1 WO2020098432 A1 WO 2020098432A1 CN 2019110827 W CN2019110827 W CN 2019110827W WO 2020098432 A1 WO2020098432 A1 WO 2020098432A1
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WIPO (PCT)
Prior art keywords
frame
stabilizer bar
structures
airbag
brackets
Prior art date
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Ceased
Application number
PCT/CN2019/110827
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English (en)
French (fr)
Inventor
高嘉利
肖勇
何安清
陈国华
杨海
李鸥栩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang CRRC Electric Vehicle Co Ltd
Original Assignee
Zhejiang CRRC Electric Vehicle Co Ltd
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Filing date
Publication date
Application filed by Zhejiang CRRC Electric Vehicle Co Ltd filed Critical Zhejiang CRRC Electric Vehicle Co Ltd
Publication of WO2020098432A1 publication Critical patent/WO2020098432A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
    • B60G11/27—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs wherein the fluid is a gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/08—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having fluid spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
    • B60G17/052—Pneumatic spring characteristics
    • B60G17/0523—Regulating distributors or valves for pneumatic springs
    • B60G17/0525—Height adjusting or levelling valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
    • B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
    • B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
    • B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
    • B60G21/055—Stabiliser bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/15—Fluid spring
    • B60G2202/152—Pneumatic spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2300/00—Indexing codes relating to the type of vehicle
    • B60G2300/50—Electric vehicles; Hybrid vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/30—Height or ground clearance

Definitions

  • the invention belongs to the technical field of electric car chassis, and relates to a chassis and a pure electric city bus.
  • the pure electric city bus (tram) is a green new energy vehicle.
  • the tram chassis is self-developed on the basis of digesting and absorbing the domestic and foreign bus chassis technology.
  • the chassis includes a suspension system that can improve the stability of the body and is used to control the steering of the vehicle. Steering system, braking system for braking, transmission system for transmission, etc.
  • the present invention designs a chassis with reasonable design, good vibration reduction effect and good stability.
  • the purpose of the present invention is to address the above problems in the existing technology, and propose a chassis with a reasonable design, good vibration damping effect, good stability and a pure electric city bus.
  • a chassis including a frame, and a transmission system and a suspension system respectively provided on the frame
  • the transmission system includes a front axle structure and a rear axle structure
  • the frame system includes a front suspension assembly for connecting the frame and the front axle structure, and a rear suspension assembly for connecting the frame and the rear axle structure.
  • the front suspension assembly includes two brackets symmetrically distributed on both sides ,
  • the front axle structure is connected to two brackets at the same time, a front thrust rod structure is connected between the bracket and the frame, and a front thrust rod structure is also connected between the front axle structure and the frame, which is installed on the bracket
  • There is a front airbag assembly a front shock absorber structure on the side of the front airbag assembly is also installed on the bracket, the front shock absorber structure is connected to the frame, and a front stabilizer bar structure is connected between the two brackets
  • the rear suspension assembly includes a pair of beam structures symmetrically distributed on the left and right sides.
  • the rear bridge structure is respectively connected to the center of the two beam structures.
  • the center of each beam structure is also connected to the frame through a rear thrust rod structure.
  • a rear thrust rod structure is also connected between the bridge structure and the frame, and a rear airbag assembly is respectively installed at both ends of the beam structure.
  • the rear airbag assembly and the front airbag assembly are both set as air spring structures, each rear The side parts of the airbag assembly are all connected with a rear shock absorber structure, the rear shock absorber structure is connected with the vehicle frame, and a rear stabilizer bar structure is also connected between the two beam structures.
  • the front axle structure and the rear axle structure are respectively provided with drive shafts, and the two ends of the drive shaft are respectively provided with flange structures with mounting holes, and the drive shaft of the front axle structure is simultaneously with Two brackets are connected, and the drive shaft of the rear axle structure is simultaneously connected to the two beam structures.
  • the rear airbag assembly includes a rear airbag air cylinder and a rear air spring body.
  • the rear airbag air cylinder receives compressed air sent from outside and sends the compressed air into the rear air spring body.
  • the front airbag assembly includes a front airbag air cylinder and a front air spring body, the front airbag air cylinder receives compressed air from outside, and sends the compressed air into the front air spring body .
  • At least one front airbag assembly is connected with a front height valve, the front height valve is docked with a corresponding front air spring body, and at least one rear airbag assembly is connected with a rear height valve, the rear height valve Docking with the corresponding rear air spring body.
  • the back thrust rod structure on each beam structure is disposed at a side facing the other beam structure, and the back thrust rod structure on the rear axle structure is disposed between the two beam structures.
  • the later described stabilizer bar structure is also provided between the two beam structures.
  • the beam structure is set as a C-shaped beam structure, and the corresponding rear airbag assembly is installed at an end position of the beam structure.
  • the rear stabilizer bar structure is provided as a C-shaped structure, the two ends of the rear stabilizer bar structure are respectively connected to the beam structure, and the middle part of the rear stabilizer bar structure is connected to the rear suspension bar structure and the frame connection.
  • the front stabilizer bar structure is configured as a C-shaped structure, the two ends of the front stabilizer bar structure are respectively connected to the bracket, and the middle part of the front stabilizer bar structure is connected to the frame through the stabilizer bar hoop .
  • the end of the front stabilizer bar structure is connected to the corresponding bracket through the front suspension bar structure.
  • a pure electric city bus includes a body and the above-mentioned chassis connected to the body, and the frame is connected to the body.
  • the embodiments of the present invention can produce at least the following technical effects: the overall structure of the chassis is reasonably designed and compact, the vibration damping effect is good, the stability is good, and the comfort of the vehicle can also be improved.
  • the suspension system and the transmission system are closely coordinated
  • the overall suspension system is set up with two front and four rear air suspension structures, which are mainly equipped with shock absorbers, stabilizer bars, thrust bars and beam combinations.
  • the structures are closely coordinated, and the airbag assembly can be used by compressed air.
  • the vertical floating adjustment is realized in order to change the height of the vehicle, which has the effect of damping the vibration, and the structure of the damper structure further improves the damping effect.
  • the air suspension gives the car more flexibility. When you are driving at a high speed, the suspension can be hardened to improve the stability of the body. When driving on a low-speed uneven road for a long time, the vehicle's own control unit will make the suspension soft and improve the comfort of the car.
  • FIG. 1 is a schematic structural view of a preferred embodiment of the present invention.
  • FIG. 2 is a schematic view of the structure of the front axle structure and the front suspension assembly after installation in a preferred embodiment of the present invention.
  • FIG 3 is a schematic structural view of a front suspension assembly in a preferred embodiment of the present invention.
  • FIG. 4 is a schematic structural view of FIG. 3 from another perspective.
  • FIG. 5 is a schematic structural view of FIG. 4 from another perspective.
  • FIG. 6 is a schematic structural view of a rear axle structure and a rear suspension assembly after installation in a preferred embodiment of the present invention.
  • FIG. 7 is a schematic structural view of a rear suspension assembly in a preferred embodiment of the present invention.
  • FIG. 8 is a schematic structural view of FIG. 7 from another perspective.
  • FIG. 9 is a partial cross-sectional view taken along line A-A in FIG. 7.
  • FIG. 10 is a schematic structural view of a transmission shaft in a preferred embodiment of the present invention.
  • FIG. 11 is a schematic structural view of FIG. 10 from another perspective.
  • 100 frame; 200, front axle structure; 300, rear axle structure; 400, front suspension assembly; 410, bracket; 420, front thrust rod structure; 430, front airbag assembly; 440, front reduction Vibrator structure; 450, front stabilizer bar structure; 460, front height valve; 470, stabilizer bar hoop; 480, front boom structure; 500, rear suspension assembly; 510, beam structure; 520, rear thrust bar structure ; 530, rear airbag assembly; 540, rear shock absorber structure; 550, rear stabilizer bar structure; 560, rear height valve; 570, rear boom structure; 600, transmission shaft; 610, flange structure; 611, installation hole.
  • the chassis includes a frame 100 and a transmission system and a suspension system respectively provided on the frame;
  • the transmission system includes a front axle structure 200 and a rear axle structure 300;
  • the suspension system Including the front suspension assembly 400 for connecting the frame 100 and the front axle structure 200, and the rear suspension assembly 500 for connecting the frame 100 and the rear axle structure 300;
  • the front suspension assembly 400 includes symmetrically distributed Two brackets 410, the front axle structure 200 is connected to two brackets 410 at the same time, a front thrust rod structure 420 is connected between the bracket 410 and the frame 100, and there is also a connection between the front axle structure 200 and the frame 100
  • a front thrust rod structure 420 is connected, a front airbag assembly 430 is mounted on the bracket 410, and a front shock absorber structure 440 on the side of the front airbag assembly 430 is also mounted on the bracket 410.
  • the front shock absorber structure Connected to the frame 100, a front stabilizer bar structure 450 is connected between the two brackets 410; the rear suspension assembly 500 includes a pair of beam structures 510 distributed symmetrically left and right, and the rear axle structure 300 is respectively connected to the two beam structures 510
  • the middle of each beam structure 510 is also connected to the frame 100 through a rear thrust rod structure 520, and a rear thrust rod structure 520 is also connected between the rear axle structure 300 and the frame 100, at both ends of the beam structure 510
  • the rear airbag assembly 530 and the front airbag assembly 430 are each provided with an air spring structure, and each rear airbag assembly 530 is connected to the rear shock absorber structure 540 on the side.
  • the rear shock absorber structure 540 is connected to the frame 100, and a rear stabilizer bar structure 550 is also connected between the two beam structures 510.
  • the invention also protects a pure electric city bus using the above chassis, which includes a body, the above chassis connected to the body, and a frame connected to the body.
  • the front suspension assembly 400 is used to connect the frame 100 and the front axle of the vehicle
  • the rear suspension assembly 500 is used to connect the frame 100 and the rear axle of the vehicle
  • the air spring is filled in a sealed container Compressed air, using gas compressibility to achieve its elastic effect.
  • the overall structure of the chassis is designed to be reasonable and compact, with good damping effect, good stability, and can also improve the comfort of the vehicle. Its suspension system and transmission system are closely coordinated.
  • the overall suspension system is set to the front two rear four air suspension structure.
  • Mainly equipped with shock absorber, stabilizer bar, thrust bar and beam combination and other structures, each structure is closely coordinated, and the airbag assembly can achieve vertical floating adjustment in the vertical direction by the action of compressed air to change the vehicle's
  • the height has played a damping effect, and the structure of the damper structure has further improved the damping effect.
  • the air suspension gives the car more flexibility. When you are driving at high speed, the suspension can be hardened to improve the body. Stability, and when driving on low-speed uneven roads for a long time, the vehicle's own control unit will make the suspension soft and improve the comfort of the car.
  • the front axle structure 200 and the rear axle structure 300 are respectively provided with a transmission shaft 600, and both ends of the transmission shaft 600 are respectively provided as flange structures 610 with mounting holes 611.
  • the drive shaft of the front axle structure is simultaneously connected to two brackets, and the drive shaft of the rear axle structure is simultaneously connected to two beam structures.
  • Such a structural arrangement not only facilitates the docking of the transmission shaft and the motor for transmission, but further preferably eight mounting holes 611.
  • the overall transmission shaft has sufficient torque transmission capability and can increase transmission efficiency.
  • the rear airbag assembly 530 includes a rear airbag air cylinder and an air spring body, the rear airbag air cylinder receives compressed air sent from the outside, and sends the compressed air into the air spring body in.
  • the front airbag assembly 430 includes a front airbag air cylinder and a front air spring body.
  • the front airbag air cylinder receives compressed air sent from the outside and sends the compressed air into the front air spring body.
  • the configuration of the front airbag assembly 430 and the rear airbag assembly 530 are basically the same, and their positions and dimensions are different.
  • the air compressor can be used to supply air to the airbag air cylinder.
  • the air bag air cylinder sends compressed air to In the air spring, in order to change the height of the vehicle, the inflation and deflation of the air spring can be controlled to compress or extend the spring, thereby achieving the effect of damping vibration.
  • At least one front airbag assembly 430 is connected with a front height valve 460, the front height valve 460 is docked with a corresponding front air spring body, and at least one rear airbag assembly 530 is connected with a rear height valve 560, the rear height The valve 560 is docked with the corresponding rear air spring body.
  • the height valve can control the inflation and deflation of the corresponding air spring.
  • the present invention is provided with a vehicle height sensor (height valve) near the front wheel and the rear wheel. According to the output signal of the height valve sensor, the change of the body height is judged, and then the air is controlled. The inflation and deflation of the spring causes the spring to compress or extend, thereby achieving the effect of damping vibration.
  • the rear thrust rod structure 520 on each beam structure 510 is disposed at a side facing the other beam structure 510,
  • the rear thrust bar structure 520 on the rear axle structure 300 is disposed between the two beam structures 510, and the rear stabilizer bar structure 550 is also disposed between the two beam structures 510.
  • the above rear axle structure 300 is preferably connected with two rear thrust rod structures 520, plus two rear thrust rod structures 520 on the beam structure 510, the four rear thrust rods are arranged at the same side position, and the rear stabilizer rods are arranged opposite to each other.
  • the beam structure 510 is provided as a C-shaped beam structure 510, and the corresponding rear airbag assembly 530 is installed at an end position of the beam structure 510.
  • the combination of left and right symmetrical C-shaped beams combined with the setting of the airbag assembly makes the overall suspension system ideal for vibration reduction, stable driving, and reduces the interference between parts.
  • the installation space between the two C-shaped beams is more flexible.
  • the middle part of the rear stabilizer bar structure 550 is connected to the frame 100 through the rear suspension bar structure 570.
  • the rear suspension bar structure 570 is provided as two symmetrical, rear stabilizer bar structures
  • the 550 is further preferably configured as a C-shaped structure. The ends of the two ends are respectively connected to the beam structure 510, and the middle is connected to the frame 100 through a boom, so that the connection of the rear stabilizer bar structure 550 is more reliable and stable.
  • the front stabilizer bar structure 450 is preferably configured as a C-shaped structure, and both ends of the front stabilizer bar structure 450 are respectively connected to the bracket 410
  • the middle part of the front stabilizer bar structure 450 is connected to the frame 100 through a stabilizer bar hoop 470.
  • the ends of the front stabilizer bar structure 450 are connected to the corresponding bracket 410 through the front suspension bar structure 480, and two symmetrical two corresponding to the above stabilizer bar hoop 470 are provided.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

一种底盘，包括车架（100）、传动系统、悬架系统，传动系统包括前桥结构（200）和后桥结构（300），所述悬架系统包括前悬架总成（400）、后悬架总成（500），前悬架总成（400）包括两个支架（410），前桥结构同时和两个支架（410）连接，支架（410）和车架之间连接有前推力杆结构（420），在支架（410）上安装有前气囊总成（430），在支架（410）上还安装有位于前气囊总成（430）侧部的前减振器结构（440），前减振器结构（440）和车架连接，两个支架（410）之间连接有前稳定杆结构（450），后悬架总成（500）包括一对梁结构（510），后桥结构（300）分别和两个梁结构（510）的中部连接，各梁结构中部还通过后推力杆结构（520）和车架连接，，在梁结构（510）两个端部分别安装有后气囊总成（530），所述后气囊总成（530）和前气囊总成（430）均设置为空气弹簧结构。还公开了一种具有该底盘的纯电动城市客车。本底盘具有减振效果好，稳定性好的优点。

Description

底盘及纯电动城市客车 技术领域
本发明属于电车底盘技术领域，涉及一种底盘及纯电动城市客车。
背景技术
纯电动城市客车(电车)是绿色新能源交通工具，电车底盘是消化吸收国内外客车底盘技术的基础上自行研制而成的，底盘包括可提升车身稳定性的悬架系统、用于控制车辆转向的转向系统、制动用的制动系统、传动用的传动系统等。为适应目前市场需求，本发明设计一种设计合理、减振效果好，稳定性好的底盘。
发明内容
本发明的目的是针对现有的技术存在上述问题，提出了一种设计合理，减振效果好，稳定性好的底盘及纯电动城市客车。
本发明的目的可通过下列技术方案来实现：一种底盘，包括车架以及分别设置在车架上的传动系统、悬架系统，所述传动系统包括前桥结构和后桥结构，所述悬架系统包括用于连接车架和前桥结构的前悬架总成、用于连接车架和后桥结构的后悬架总成，所述前悬架总成包括左右对称分布的两个支架，所述前桥结构同时和两个支架连接，所述支架和车架之间连接有前推力杆结构，所述前桥结构和车架之间也连接有前推力杆结构，在支架上安装有前气囊总成，在支架上还安装有位于前气囊总成侧部的前减振器结构，所述前减震器结构和车架连接，两个支架之间连接有前稳定杆结构，所述后悬架总成包括左右对称分布的一对梁结构，所述后桥结构分别和两个梁结构的中部连接，各梁结构中部还通过后推力杆结构和车架连接，所述后桥结构和车架之间也连接有后推力杆结构，在梁结构两个端部分别安装有后气囊总成，所述后气囊总成和前气囊总成均设置为空气弹簧结构，各后气囊总成侧部均连接有后减振器结构，所述后减振器结构和车架连接，两个梁结构之间还连接有后稳定杆结构。
作为本发明的进一步改进，所述前桥结构、后桥结构分别设置有传动轴，所述传动轴的两端分别设置为具有安装孔的法兰结构，所述前桥结构的传动轴同时和两个支架连接，所述后桥结构的传动轴同时和两个梁结构 连接。
作为本发明的进一步改进，所述后气囊总成包括后气囊储气筒和后空气弹簧主体，所述后气囊储气筒接收外部送来的压缩空气，并将压缩空气送入后空气弹簧主体中。
作为本发明的更进一步改进，所述前气囊总成包括前气囊储气筒和前空气弹簧主体，所述前气囊储气筒接收外部送来的压缩空气，并将压缩空气送入前空气弹簧主体中。
作为本发明的更进一步改进，至少一个前气囊总成连接有前高度阀，所述前高度阀和对应前空气弹簧主体对接，至少一个后气囊总成连接有后高度阀，所述后高度阀和对应后空气弹簧主体对接。
作为本发明的进一步改进，各梁结构上的后推力杆结构设置在面朝另一个梁结构的侧部位置，所述后桥结构上的后推力杆结构设置在两个梁结构之间，所述后稳定杆结构也设置在两个梁结构之间。
作为本发明的进一步改进，所述梁结构设置为C型梁结构，对应的后气囊总成安装在梁结构的端部位置。
作为本发明的进一步改进，所述后稳定杆结构设置为C型结构，所述后稳定杆结构两端端部分别和梁结构连接，所述后稳定杆结构中部通过后吊杆结构和车架连接。
作为本发明的进一步改进，所述前稳定杆结构设置为C型结构，所述前稳定杆结构两端端部分别和支架连接，所述前稳定杆结构中部通过稳定杆抱箍和车架连接。
作为本发明的更进一步改进，所述前稳定杆结构的端部通过前吊杆结构和对应支架连接。
一种纯电动城市客车，包括车身、和车身连接的上述底盘，所述车架和车身相连。
基于上述技术方案，本发明实施例至少可以产生如下技术效果：本底盘整体结构设计合理、紧凑，减振效果好，稳定性好，还能提升车辆舒适性，其悬架系统和传动系统配合紧密，悬架系统整体设置为前二后四空气悬架结构，主要设置有减振器、稳定杆、推力杆和梁组合等结构，各个结 构之间配合紧密，气囊总成可以通过压缩空气的作用实现竖直方向上的上下浮动调节，以此来改变车辆的高度，起到了减振的效果，而且减振器结构的设置也进一步提升了减振效果，空气悬架给予了汽车更多的灵性，当你在高速行驶时悬架可以变硬来提高车身的稳定性，而长时间在低速不平的路面行驶时，配合车辆自身的控制单元会使悬架变软来提高车子的舒适性。
附图说明
下面结合附图对本发明的具体实施方式作进一步详细的说明，其中：
图1是本发明一较佳实施例的结构示意图。
图2是本发明一较佳实施例中前桥结构和前悬架总成安装后的结构示意图。
图3是本发明一较佳实施例中前悬架总成的结构示意图。
图4是图3另一视角的结构示意图。
图5是图4另一视角的结构示意图。
图6是本发明一较佳实施例中后桥结构和后悬架总成安装后的结构示意图。
图7是本发明一较佳实施例中后悬架总成的结构示意图。
图8是图7另一视角的结构示意图。
图9是图7中A-A向的局部剖视图。
图10是本发明一较佳实施例中传动轴的结构示意图。
图11是图10另一视角的结构示意图。
图中，100、车架；200、前桥结构；300、后桥结构；400、前悬架总成；410、支架；420、前推力杆结构；430、前气囊总成；440、前减振器结构；450、前稳定杆结构；460、前高度阀；470、稳定杆抱箍；480、前吊杆结构；500、后悬架总成；510、梁结构；520、后推力杆结构；530、后气囊总成；540、后减振器结构；550、后稳定杆结构；560、后高度阀；570、后吊杆结构；600、传动轴；610、法兰结构；611、安装孔。
具体实施方式
以下是本发明的具体实施例并结合附图，对本发明的技术方案作进一 步的描述，但本发明并不限于这些实施例。
下面结合图1至图11对本发明提供的技术方案进行更为详细的阐述。
如图1至图11所示，本底盘包括车架100以及分别设置在车架上的传动系统、悬架系统；所述传动系统包括前桥结构200和后桥结构300；所述悬架系统包括用于连接车架100和前桥结构200的前悬架总成400、用于连接车架100和后桥结构300的后悬架总成500；前悬架总成400包括左右对称分布的两个支架410，所述前桥结构200同时和两个支架410连接，所述支架410和车架100之间连接有前推力杆结构420，所述前桥结构200和车架100之间也连接有前推力杆结构420，在支架410上安装有前气囊总成430，在支架410上还安装有位于前气囊总成430侧部的前减振器结构440，所述前减震器结构和车架100连接，两个支架410之间连接有前稳定杆结构450；后悬架总成500包括左右对称分布的一对梁结构510，所述后桥结构300分别和两个梁结构510的中部连接，各梁结构510中部还通过后推力杆结构520和车架100连接，所述后桥结构300和车架100之间也连接有后推力杆结构520，在梁结构510两个端部分别安装有后气囊总成530，所述后气囊总成530和前气囊总成430均设置为空气弹簧结构，各后气囊总成530侧部均连接有后减振器结构540，所述后减振器结构540和车架100连接，两个梁结构510之间还连接有后稳定杆结构550。
本发明还保护一种应用上述底盘的纯电动城市客车，其包括车身、和车身连接的上述底盘，车架和车身相连。
在本发明中，前悬架总成400用于连接车架100和车辆前桥，后悬架总成500用于连接车架100和车辆后桥，空气弹簧是在一个密封的容器中充入压缩空气，利用气体可压缩性实现其弹性作用。
本底盘整体结构设计合理、紧凑，减振效果好，稳定性好，还能提升车辆舒适性，其悬架系统和传动系统配合紧密，悬架系统整体设置为前二后四空气悬架结构，主要设置有减振器、稳定杆、推力杆和梁组合等结构，各个结构之间配合紧密，气囊总成可以通过压缩空气的作用实现竖直方向上的上下浮动调节，以此来改变车辆的高度，起到了减振的效果，而且减振器结构的设置也进一步提升了减振效果，空气悬架给予了汽车更多的灵 性，当你在高速行驶时悬架可以变硬来提高车身的稳定性，而长时间在低速不平的路面行驶时，配合车辆自身的控制单元会使悬架变软来提高车子的舒适性。
作为一种优选或可选的实施方式，优选前桥结构200、后桥结构300分别设置有传动轴600，所述传动轴600的两端分别设置为具有安装孔611的法兰结构610，所述前桥结构的传动轴同时和两个支架连接，所述后桥结构的传动轴同时和两个梁结构连接。这样的结构设置不仅方便传动轴和传动用电机对接，还进一步优选为八个安装孔611，整体传动轴具有足够传扭能力，能增加传动效率。
作为一种优选或可选的实施方式，优选后气囊总成530包括后气囊储气筒和空气弹簧主体，所述后气囊储气筒接收外部送来的压缩空气，并将压缩空气送入空气弹簧主体中。
进一步的，前气囊总成430包括前气囊储气筒和前空气弹簧主体，所述前气囊储气筒接收外部送来的压缩空气，并将压缩空气送入前空气弹簧主体中。
上述前气囊总成430结构设置和后气囊总成530基本相同，其位置和尺寸规格具有差异，工作时，可利用空压机供气给气囊储气筒，气囊储气筒的将压缩的空气送到空气弹簧中，以此来改变车辆的高度，可以通过控制空气弹簧的充放气，使弹簧压缩或伸长，从而起到减振的效果。
更进一步的，至少一个前气囊总成430连接有前高度阀460，所述前高度阀460和对应前空气弹簧主体对接，至少一个后气囊总成530连接有后高度阀560，所述后高度阀560和对应后空气弹簧主体对接。
高度阀可控制对应空气弹簧充放气，本发明在前轮和后轮的附近设有车高传感器(高度阀)，按高度阀的传感器的输出信号，判断出车身高度的变化，再控制空气弹簧的充放气，使弹簧压缩或伸长，从而起到减振的效果。
为进一步提升空间布局的合理性和紧凑性，并保证整体悬架结构的稳定性，优选地，各梁结构510上的后推力杆结构520设置在面朝另一个梁结构510的侧部位置，所述后桥结构300上的后推力杆结构520设置在两 个梁结构510之间，所述后稳定杆结构550也设置在两个梁结构510之间。
上述后桥结构300优选连接有两个后推力杆结构520，加上梁结构510上的两个后推力杆结构520，四个后推力杆布置在同一侧位置，而后稳定杆布置的相对的另一侧位置，形成左右分布布局，整体车辆行车的稳定性和舒适度更佳。
在本发明中，梁结构510设置为C型梁结构510，对应的后气囊总成530安装在梁结构510的端部位置。左右对称的C型梁组合配合气囊总成的设置，使得整体悬架系统减振效果理想，行驶稳定，还能减少零件之间的相互干涉影响，两个C型的梁之间安装空间设置更灵活。
进一步的，为提升安装的可靠性以及整体稳定性，优选后稳定杆结构550中部通过后吊杆结构570和车架100连接，优选后吊杆结构570设置为对称的两个，后稳定杆结构550进一步优选设置为C型结构，其两端端部分别和梁结构510连接，中部通过吊杆和车架100连接，使得后稳定杆结构550连接更加可靠、稳定。
进一步的，为保证前稳定杆结构450和支架410、车架100连接的紧密可靠，优选前稳定杆结构450设置为C型结构，所述前稳定杆结构450两端端部分别和支架410连接，所述前稳定杆结构450中部通过稳定杆抱箍470和车架100连接。
优选地，前稳定杆结构450的端部通过前吊杆结构480和对应支架410连接，而且对应上述稳定杆抱箍470设置为对称的两个。
本文中所描述的具体实施例仅仅是对本发明精神作举例说明。本发明所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，但并不会偏离本发明的精神或者超越所附权利要求书所定义的范围。

Claims (10)

  1. 一种底盘，其特征在于：包括车架以及分别设置在车架上的传动系统、悬架系统，所述传动系统包括前桥结构和后桥结构，所述悬架系统包括用于连接车架和前桥结构的前悬架总成、用于连接车架和后桥结构的后悬架总成，所述前悬架总成包括左右对称分布的两个支架，所述前桥结构同时和两个支架连接，所述支架和车架之间连接有前推力杆结构，所述前桥结构和车架之间也连接有前推力杆结构，在支架上安装有前气囊总成，在支架上还安装有位于前气囊总成侧部的前减振器结构，所述前减震器结构和车架连接，两个支架之间连接有前稳定杆结构，所述后悬架总成包括左右对称分布的一对梁结构，所述后桥结构分别和两个梁结构的中部连接，各梁结构中部还通过后推力杆结构和车架连接，所述后桥结构和车架之间也连接有后推力杆结构，在梁结构两个端部分别安装有后气囊总成，所述后气囊总成和前气囊总成均设置为空气弹簧结构，各后气囊总成侧部均连接有后减振器结构，所述后减振器结构和车架连接，两个梁结构之间还连接有后稳定杆结构。
  2. 根据权利要求1所述的底盘，其特征在于：所述前桥结构、后桥结构分别设置有传动轴，所述传动轴的两端分别设置为具有安装孔的法兰结构，所述前桥结构的传动轴同时和两个支架连接，所述后桥结构的传动轴同时和两个梁结构连接。
  3. 根据权利要求1所述的底盘，其特征在于：所述后气囊总成包括后气囊储气筒和后空气弹簧主体，所述后气囊储气筒接收外部送来的压缩空气，并将压缩空气送入后空气弹簧主体中。
  4. 根据权利要求3所述的底盘，其特征在于：所述前气囊总成包括前气囊储气筒和前空气弹簧主体，所述前气囊储气筒接收外部送来的压缩空气，并将压缩空气送入前空气弹簧主体中。
  5. 根据权利要求4所述的底盘，其特征在于：至少一个前气囊总成连接有前高度阀，所述前高度阀和对应前空气弹簧主体对 接，至少一个后气囊总成连接有后高度阀，所述后高度阀和对应后空气弹簧主体对接。
  6. 根据权利要求1所述的底盘，其特征在于：所述梁结构设置为C型梁结构，对应的后气囊总成安装在梁结构的端部位置。
  7. 根据权利要求1所述的底盘，其特征在于：所述后稳定杆结构设置为C型结构，所述后稳定杆结构两端端部分别和梁结构连接，所述后稳定杆结构中部通过后吊杆结构和车架连接。
  8. 根据权利要求1所述的底盘，其特征在于：所述前稳定杆结构设置为C型结构，所述前稳定杆结构两端端部分别和支架连接，所述前稳定杆结构中部通过稳定杆抱箍和车架连接。
  9. 根据权利要求8所述的底盘，其特征在于：所述前稳定杆结构的端部通过前吊杆结构和对应支架连接。
  10. 一种纯电动城市客车，其特征在于：包括车身、和车身连接的权利要求1所述的底盘，所述车架和车身相连。
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