CN107192561B - Test bed for electric wheel suspension system of hub-driven electric automobile - Google Patents
Test bed for electric wheel suspension system of hub-driven electric automobile Download PDFInfo
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- 230000035939 shock Effects 0.000 claims description 7
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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
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Abstract
本发明提供一种轮毂驱动电动汽车电动轮悬架系统试验台,包括固定底座和总机架,固定底座设置在总机架下端,总机架上设置有悬架装置、电动轮和滚筒装置,悬架装置由上摆臂、羊角和下摆臂构成,上摆臂的一端通过总机架上方的铰接块实现连接,另一端与羊角铰接,羊角的下端通过球头与下摆臂的一端连接,下摆臂的另一端与总机架上的固定块实现铰接,电动轮设置在羊角的右端,滚筒装置通过滚筒支撑架设置在电动轮下方。整体电动轮结构中没有机械传动机构,结构紧凑,传递效率高;对电动汽车在实际运行工况下运动测试,垂直载荷模拟机构可以模拟出电动轮在实际工况下的载荷、转矩及转速的变化。试验台可进行电动轮的电子差速试验及制动试验。
The invention provides a test bench for the electric wheel suspension system of a hub-driven electric vehicle. The suspension device is composed of upper swing arm, horn and lower swing arm. One end of the upper swing arm is connected through the hinge block above the main frame, and the other end is hinged with the horn. The lower end of the horn is connected with one end of the lower swing arm through a ball joint. The other end of the arm is hinged with the fixed block on the main frame, the electric wheel is arranged on the right end of the horn, and the roller device is arranged below the electric wheel through the roller support frame. There is no mechanical transmission mechanism in the overall electric wheel structure, the structure is compact, and the transmission efficiency is high; for the motion test of the electric vehicle under actual operating conditions, the vertical load simulation mechanism can simulate the load, torque and speed of the electric wheel under actual operating conditions The change. The test bench can carry out the electronic differential speed test and brake test of the electric wheel.
Description
技术领域technical field
本发明涉及电动汽车领域,尤其涉及一种轮毂驱动电动汽车电动轮悬架系统试验台。The invention relates to the field of electric vehicles, in particular to a test bench for an electric wheel suspension system of a hub-driven electric vehicle.
背景技术Background technique
21世纪的能源短缺与环境污染是需要解决的两大难题。在对这两个难题的解决上,电动汽车有着不可替代的优势。电动汽车(BEV)是指以车载电源为动力,用电机驱动车轮行驶,符合道路交通、安全法规各项要求的车辆。由于对环境影响相对传统汽车较小,其前景被广泛看好,但当前技术尚不成熟。而目前对电动轮的动态加载测试平台,主要集中是对电动轮中的轮毂电机这一单独部件的性能测试,不能完整反映1/4车身电动轮系统的性能,造成电动轮测量精度不足,影响电动汽车的研发效率,因此设计一款电动轮悬架系统台架试验平台,这对纯电动汽车的开发具有很好的参考价值和应用价值。Energy shortage and environmental pollution in the 21st century are two major problems that need to be solved. In solving these two problems, electric vehicles have irreplaceable advantages. An electric vehicle (BEV) refers to a vehicle that is powered by a vehicle-mounted power supply, drives the wheels with a motor, and meets the requirements of road traffic and safety regulations. Due to its smaller impact on the environment than traditional cars, its prospects are widely optimistic, but the current technology is still immature. However, the current dynamic loading test platform for electric wheels mainly focuses on the performance test of the hub motor in the electric wheel, which cannot fully reflect the performance of the 1/4 body electric wheel system, resulting in insufficient measurement accuracy of the electric wheel. Therefore, a bench test platform for electric wheel suspension system is designed, which has good reference value and application value for the development of pure electric vehicles.
发明内容Contents of the invention
本发明基于轮毂驱动电动汽车电动轮悬架系统开发与测试的实际需求,设计一款新型的电动汽车电动轮-悬架振动检测试验平台。Based on the actual requirements for the development and testing of the electric wheel suspension system of the hub-driven electric vehicle, the present invention designs a new electric vehicle electric wheel-suspension vibration detection test platform.
本发明提供一种轮毂驱动电动汽车电动轮悬架系统振动检测试验平台,包括总机架,总机架上安装有螺旋传动固定架、双叉臂悬架;螺旋传动固定架顶部安装有用于对悬架模块施加的垂直载荷加载装置;双叉臂悬架一侧安装有完整电动轮模块,包括羊角、刹车盘、轮毂电机、轮辋及轮胎;总机架底部固定有用于产生激振信号的激振系统,激振系统包括激励源变频电机、振幅调节装置;激振系统上部安装有用于模拟路面的滚筒装置,模拟路面滚筒装置包括滚筒轴、幅板、接盘、筒皮;所述螺旋传动固定架通过螺栓固联在总机架上,所述双叉臂悬架装置铰接在机架上;所述激振系统通过螺栓固联在底盘支架上。The invention provides a vibration detection test platform for the electric wheel suspension system of a hub-driven electric vehicle. The vertical load loading device applied by the suspension module; a complete electric wheel module is installed on one side of the double wishbone suspension, including horns, brake discs, hub motors, wheel rims and tires; Vibration system, the excitation system includes the frequency conversion motor of the excitation source, and the amplitude adjustment device; the roller device for simulating the road surface is installed on the upper part of the excitation system, and the roller device for simulating the road surface includes a roller shaft, a web, a connecting plate, and a drum skin; the screw transmission is fixed The frame is fixedly connected to the main frame by bolts, and the double-wishbone suspension device is hinged on the frame; the vibration excitation system is fixedly connected to the chassis support by bolts.
进一步改进在于:所述垂直载荷加载装置由摇柄,螺旋传动杆,螺旋螺母构成;摇柄与螺旋传动杆之间通过键过盈的方式实现固联;螺旋螺母与螺旋传动固定架通过外围一圈螺栓固定;螺旋传动杆与螺旋螺母通过齿啮合实现垂直方向上的位移进给。The further improvement is that: the vertical load loading device is composed of a crank handle, a screw drive rod, and a screw nut; the crank handle and the screw drive rod are fixedly connected by means of key interference; the screw nut and the screw drive fixing frame are connected through a peripheral The ring bolt is fixed; the screw transmission rod and the screw nut realize the displacement feed in the vertical direction through the meshing of the teeth.
进一步改进在于:所述减震器的结构为:包括弹簧和阻尼器,弹簧由上下端盖压缩在一定行程中,阻尼器与上下端盖通过固联的方式实现固定。A further improvement is that the structure of the shock absorber is: including a spring and a damper, the spring is compressed in a certain stroke by the upper and lower end covers, and the damper and the upper and lower end covers are fixed by solid connection.
进一步改进在于:所述悬挂模块由上摆臂、羊角、下摆臂构成;上摆臂的一端通过总机架上方的铰接块实现连接,上摆臂的另一端与羊角铰接;羊角的下端通过球头与下摆臂的一端连接,下摆臂的另一端与总机架的固定块实现铰接。The further improvement is: the suspension module is composed of an upper swing arm, horns, and a lower swing arm; one end of the upper swing arm is connected through a hinge block above the main frame, and the other end of the upper swing arm is hinged with the horns; the lower end of the horns is connected by a ball The head is connected with one end of the lower swing arm, and the other end of the lower swing arm is hinged with the fixed block of the general frame.
进一步改进在于:所述路面模拟装置由滚筒轴、接盘、幅板、筒皮构成;滚筒轴与接盘之间使用键过盈的方式实现固定;接盘与幅板之间利用焊接的方式来实现固联;幅板与筒皮之间利用焊接的方式来实现固联。The further improvement is that: the road surface simulation device is composed of a drum shaft, a connecting disc, a web, and a drum skin; the drum shaft and the connecting disc are fixed by means of key interference; the connecting disc and the web are fixed by welding. Joint; between the web and the tube skin, the solid connection is realized by welding.
为减轻路面模拟装置结构的质量,需在每个幅板上开四个圆孔作为质量轻化的依据,所开圆孔的直径大小据有限元分析结果显示为φ15cm。In order to reduce the quality of the structure of the road simulation device, it is necessary to open four round holes on each web as a basis for lightening the weight. The diameter of the round holes is φ15cm according to the finite element analysis results.
进一步改进在于:所述激振系统由激励源变频电机、联轴器、振幅调节装置构成;振幅调节装置由激振圆盘、横拉杆、纵推杆、连接圆盘、螺栓螺母构成;激励源变频电机通过内嵌螺栓实现与固定底座固定装置连接;联轴器的一端通过键过盈的方式实现与变频电机转轴连接,另一端通过键过盈方式与振幅调节装置实现连接。The further improvement is: the excitation system is composed of an excitation source variable frequency motor, a coupling, and an amplitude adjustment device; the amplitude adjustment device is composed of an excitation disc, a horizontal tie rod, a vertical push rod, a connecting disc, and bolts and nuts; the excitation source The frequency conversion motor is connected to the fixed base fixture through embedded bolts; one end of the coupling is connected to the shaft of the frequency conversion motor through key interference, and the other end is connected to the amplitude adjustment device through key interference.
进一步改进在于:所述滚筒支撑架由纵向圆柱导柱、上套筒、下套筒、套筒过渡支撑套筒构成;纵向圆柱导柱安装在开孔的固定底座上;上套筒通过中心圆孔安装在纵向圆柱导轨上,上套筒一侧开有用于安装滚筒轴的侧孔;下套筒通过中心圆孔安装在纵向圆柱导轨上,下套筒一侧开有用于固定横拉杆的侧孔;过渡支撑套筒通过中心圆孔安装在纵向圆柱导轨上,过渡支撑套筒上端通过焊接的方式与上套筒下端实现固定,过渡套筒下端通过焊接的方式与下套筒上端实现固定;另一端利用焊接与振幅调节装置实现固联。从而实现整个振动系统的运动协调。The further improvement is: the roller support frame is composed of a longitudinal cylindrical guide post, an upper sleeve, a lower sleeve, and a sleeve transition support sleeve; the longitudinal cylindrical guide post is installed on a fixed base with holes; The hole is installed on the longitudinal cylindrical guide rail, and the side hole for installing the roller shaft is opened on one side of the upper sleeve; the lower sleeve is installed on the longitudinal cylindrical guide rail through the central round hole, and the side hole for fixing the tie rod is opened on one side of the lower sleeve. hole; the transition support sleeve is installed on the longitudinal cylindrical guide rail through the central round hole, the upper end of the transition support sleeve is fixed with the lower end of the upper sleeve by welding, and the lower end of the transition sleeve is fixed with the upper end of the lower sleeve by welding; The other end is fixedly connected by welding and amplitude adjustment device. Thereby realizing the motion coordination of the whole vibration system.
进一步改进在于:所述垂直载荷加载装置与减震器之间安装有压力传感器,压力传感器的一端与螺旋传动杆利用齿啮合的原理实现固联,另一端利用螺栓与减震器之间实现紧密配合。A further improvement is: a pressure sensor is installed between the vertical load loading device and the shock absorber, one end of the pressure sensor and the screw transmission rod are connected firmly by the principle of tooth meshing, and the other end is tightly connected by the bolt and the shock absorber. Cooperate.
进一步改进在于:所述双叉臂的下摆臂球头处安装有位移传感器,位移传感器的底端可以利用液态胶水进行在下摆臂的固定。A further improvement is that: a displacement sensor is installed at the ball head of the lower swing arm of the double wishbone, and the bottom end of the displacement sensor can be fixed on the lower swing arm with liquid glue.
本发明的有益效果是:将轮毂电机与车轮集成一体,适用于两轮或四轮独立驱动电动汽车,整体电动轮结构中间没有机械传动机构,具有结构紧凑,传递效率高等优点;且除了对电动轮进行耐久性试验外,还可作为对电动汽车在实际运行工况下运动测试,在此平台上,垂直载荷模拟机构能够模拟电动轮在实际工况下的载荷、转矩及转速的变化,可进行电动轮的电子差速试验及制动试验等;激振系统能够模拟不同工况下路面不平度,通过对1/4电动轮悬架系统试验台的搭建可完成电动汽车的研发提供技术支持和减少资金的投入,对电动汽车加快投入市场起到关键性作用。The beneficial effects of the present invention are: the in-wheel motor and the wheel are integrated, which is suitable for two-wheel or four-wheel independent drive electric vehicles, and there is no mechanical transmission mechanism in the middle of the overall electric wheel structure, which has the advantages of compact structure and high transmission efficiency; In addition to the durability test of electric wheels, it can also be used as a motion test for electric vehicles under actual operating conditions. On this platform, the vertical load simulation mechanism can simulate the changes in load, torque and speed of electric wheels under actual operating conditions. The electronic differential test and braking test of the electric wheel can be carried out; the excitation system can simulate the unevenness of the road surface under different working conditions, and the research and development of electric vehicles can be completed by building a 1/4 electric wheel suspension system test bench. Supporting and reducing capital investment plays a key role in accelerating the introduction of electric vehicles into the market.
附图说明Description of drawings
图1是本发明的结构主视图。Fig. 1 is a structural front view of the present invention.
图2是本发明的结构左视图。Fig. 2 is a left view of the structure of the present invention.
图3是本发明的垂直加载装置结构示意图。Fig. 3 is a schematic structural view of the vertical loading device of the present invention.
图4是本发明的振幅调节装置结构示意图。Fig. 4 is a structural schematic diagram of the amplitude adjusting device of the present invention.
其中:1-固定底座,2-总机架,3-电动轮,4-滚筒装置,5-上摆臂,6-羊角,7-下摆臂,8-铰接块,9-固定块,10-滚筒支撑架,11-纵向圆柱导柱,12-上套筒,13-下套筒,14-套筒过渡支撑套筒,15-螺旋传动杆,16-螺旋螺母,17-摇柄,18-螺旋传动固定架,19-激励源变频电机,20-联轴器,21-振幅调节装置,22-刹车盘,23-激振圆盘,24-横拉杆,25-纵推杆,26-连接圆盘,27-减震器,28-压力传感器。Among them: 1- fixed base, 2- total frame, 3- electric wheel, 4- roller device, 5- upper swing arm, 6- horn, 7- lower swing arm, 8- hinge block, 9- fixed block, 10- Roller support frame, 11-longitudinal cylindrical guide column, 12-upper sleeve, 13-lower sleeve, 14-sleeve transition support sleeve, 15-screw drive rod, 16-screw nut, 17-rocking handle, 18- Screw drive fixed frame, 19-excitation source frequency conversion motor, 20-coupling, 21-amplitude adjustment device, 22-brake disc, 23-exciting disc, 24-horizontal tie rod, 25-vertical push rod, 26-connection Disc, 27-shock absorber, 28-pressure sensor.
具体实施方式Detailed ways
为了加深对本发明的理解,下面将结合实施例对本发明作进一步详述,该实施例仅用于解释本发明,并不构成对本发明保护范围的限定。In order to deepen the understanding of the present invention, the present invention will be further described below in conjunction with examples, which are only used to explain the present invention and do not constitute a limitation to the protection scope of the present invention.
如图1-4所示,本实施例提供了一种轮毂驱动电动汽车电动轮悬架系统试验台,包括固定底座1和总机架2,所述固定底座1设置在总机架2下端,所述总机架2上设置有悬架装置、电动轮3和用来模拟路面的滚筒装置4,所述悬架装置由上摆臂5、羊角6和下摆臂7构成,所述上摆臂5的一端通过总机架2上方的铰接块8实现连接,另一端与羊角6铰接,所述羊角6的下端通过球头与下摆臂7的一端连接,下摆臂7的另一端与总机架2上的固定块9实现铰接,所述电动轮3设置在羊角6的右端,所述滚筒装置4通过滚筒支撑架10设置在电动轮3下方。As shown in Figures 1-4, this embodiment provides a test bench for an electric wheel suspension system of a hub-driven electric vehicle, including a
所述滚筒支撑架10由纵向圆柱导柱11、上套筒12、下套筒13和套筒过渡支撑套筒14构成,所述纵向圆柱导柱11安装在开孔的固定底座1上;上套筒12通过中心圆孔安装在纵向圆柱导柱11上,上套筒12一侧开有用于安装滚筒轴的侧孔;下套筒13通过中心圆孔安装在纵向圆柱导柱11上,下套筒(13)一侧开有侧孔,套筒过渡支撑套筒14通过中心圆孔安装在纵向圆柱导柱11上,套筒过渡支撑套筒14上端通过焊接的方式与上套筒12下端实现固定,套筒过渡支撑套筒14下端通过焊接的方式与下套筒13上端实现固定。The
所述悬架装置上设置有垂直加载装置,所述垂直加载装置包括螺旋传动杆15、螺旋螺母16、摇柄17和螺旋传动固定架18,所述摇柄17与螺旋传动杆15之间通过键过盈的方式实现固联,螺旋螺母16与螺旋传动固定架18通过外围螺栓固定;螺旋传动杆15与螺旋螺母16通过齿啮合实现垂直方向上的位移进给。The suspension device is provided with a vertical loading device, and the vertical loading device includes a
所述滚筒装置4下方设置有用来产生不同激振频率及振幅的激振系统装置,所述激振系统装置包括激励源变频电机19、联轴器20和振幅调节装置21,所述激励源变频电机19通过内嵌螺栓实现与固定底座1固定装置连接,联轴器20的一端通过键过盈的方式实现与激励源变频电机19转轴连接,另一端通过键过盈方式与振幅调节装置21实现连接。Below the
所述电动轮3与羊角6之间设置有刹车盘22,通过刹车盘22对电动轮3的速度进行控制。A
所述振幅调节装置21由激振圆盘23、横拉杆24、纵推杆25和连接圆盘26构成,所述横拉杆24设置在下套筒13上,所述纵推杆25设置在横拉杆24的中部,所述激振圆盘23设置在纵推杆25前端,所述连接圆盘26设置在激振圆盘23上,所述横拉杆(24)安装在下套筒(13)的侧孔上。The amplitude adjusting
所述垂直加载装置下端设置有减震器27,所述垂直加载装置与减震器27之间设置有压力传感器28。A
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