CN2476468Y - Back-pull testing device for vehicle chassis function test machine - Google Patents
Back-pull testing device for vehicle chassis function test machine Download PDFInfo
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- CN2476468Y CN2476468Y CN 01240949 CN01240949U CN2476468Y CN 2476468 Y CN2476468 Y CN 2476468Y CN 01240949 CN01240949 CN 01240949 CN 01240949 U CN01240949 U CN 01240949U CN 2476468 Y CN2476468 Y CN 2476468Y
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Abstract
本实用新型属汽车性能检测领域。它是由测功、反拖、飞轮组和显示部分组成,测试滚筒和支撑滚筒平行布置,测试滚筒一端装有功率吸收器,另一端装有反拖电机和飞轮组,反拖电机安装在支撑框架上,并可绕支撑轴转动,功率吸收器和反拖电机外壳上的悬臂分别支撑在测力传感器和拉压传感器上,测试滚筒和支撑滚筒的一端分别装有测速转盘和速度传感器,飞轮组支撑在飞轮组支撑框架上,并通过传动件与测功机的测试滚筒连接。
The utility model belongs to the field of automobile performance detection. It is composed of dynamometer, anti-drag, flywheel group and display part. The test roller and support roller are arranged in parallel. One end of the test roller is equipped with a power absorber, and the other end is equipped with an anti-drag motor and flywheel group. The power absorber and the cantilever on the casing of the anti-dragging motor are respectively supported on the load cell and the tension and pressure sensor. One end of the test roller and the support roller is respectively equipped with a speed measuring turntable and a speed sensor. The flywheel The flywheel group is supported on the support frame of the flywheel group, and is connected with the test roller of the dynamometer through the transmission parts.
Description
The utility model belongs to the automotive performance detection range.
Vehicle dynamic quality is the most basic, the most important a kind of performance of automobile.To Automobile Dynamic Performance Measurement and evaluation is important content during comprehensive vehicle performance detects.
Automobile Dynamic Performance Measurement can be divided into road examination and two kinds of bench teats.
Though its result of vehicle dynamic quality Road Detection approaches actual conditions, is subjected to the influence of uncontrollable factors such as road conditions, wind direction, wind speed, driving technique, error is big, so the road examination is not extensively adopted by car test department.
The indoor stand of vehicle dynamic quality detects and is divided into driving engine output effective power detection and car load chassis horsepower output detection two big classes.
Effective engine power detects and is divided into stable state measurement of power and two kinds of dynamic measurement of powers again.
The stable state measurement of power is an effective power of measuring driving engine by the principle of output torque on the measurement engine crankshaft and crankshaft rotating speed.This mode needs driving engine is pulled down from car, and time-consuming, effort mostly is when the engine performance experiment is done by research department and adopts.
Dynamically measurement of power is that the instantaneous acceleration of measuring a certain rotating speed of driving engine just can be determined the instantaneous power of driving engine when this rotating speed.Or measure the dynamic property that pick-up time in a certain range of speed comes engine evaluated.This method need be known the rotator inertia of each engine rotation parts, just can calculate engine power, and this almost is impossible.In addition, when on detection line, using, need hood up that the sensor and the special measurement device of some are installed, not only time-consuming, and the expertise requirement is high, so this mode is not widely adopted yet.
Chassis dynamometer is often adopted in the detection of chassis output, is divided into three kinds of force-measuring types, inertia type, composite type by principle of measurement.Chassis dynamometer is the common equipment that detection line detects vehicle dynamic quality.
Force-measuring type chassis measurement of power experimental bench be with cylinder as movable road, the resistance situation when travelling with the force-input device simulated automotive is measured the driving power of automobile on drive wheel under the various speed of a motor vehicle.Its keystone configuration is made up of three parts, is respectively roller device, force-input device and measurement mechanism.
Detecting test station wishes to measure with chassis dynamometer the horsepower output of driving engine when carrying out the automobile ranking.But that in fact, the power of chassis dynamometer instrument indication only reflects is P
DyA content, it is the non-driving wheel horsepower output also, more is not engine output.
Because the vehicle in use vehicle is numerous, vehicle condition varies.Differences such as diameter of tyres, tire construction, tire tread, tire pressure.The difference of loss power is also very remarkable.So the difference of the loss power that causes owing to the difference of vehicle vehicle condition accounts for the 15-20% of engine output, so, this just at present chassis dynamometer can not correctly estimate the basic reason of vehicle dynamic quality.
Inertia type chassis dynamo test platform is that the end at the test cell front roll is equipped with the flywheel with certain rotor inertia, the resistance when utilizing the constant rotation inertia of flywheel to come simulated roadway to travel.Keep throttle wide during test, change-speed box hangs over direct speed, is determined at pick-up time or acceleration distance in the certain speed interval, in order to estimate the dynamic property of automobile.
Its shortcoming is: a. is used for simulated automotive and need mates preferably with the translatory mass of tested vehicle the rotor inertia of the flywheel of travels down resistance, otherwise just can influence survey precision.B. the stage division of inertial flywheel group is unified at present stipulates, so different stage divisions and arrangement structure have occurred.With good grounds tested vehicle mass range commonly used is distributed the fly wheel system rotor inertia, or distributes the fly wheel system rotor inertia according to the concrete distribution of tested vehicle quality.The first method classification principle is: if institute's measuring car type mass range is m
Min～m
Max, just with flywheel simulated automotive translatory mass m commonly used
Min, residual mass m
Max-m
MinBe that the stage division of 2 Geometric Sequence is divided into some flywheel groups that can free combination with common ratio.Final translation inertia of simulating various vehicles with regard to available flywheel commonly used and the combination that freely combines flywheel.Can prove this stage division under the situation that the flywheel number is fixed, its precision is not the highest.The stage division of mode two can only satisfy the detection requirement of a certain vehicle, can be used as scientific research and uses, and can't use on detection line.
In view of the above problems, seek rational flywheel component level method and layout, accurate detection and evaluation vehicle dynamic quality are had significance.
The purpose of this utility model provides a kind of fast, accurately the detection and the anti-proving installation that drags of road simulation dynamometer of engine evaluated dynamic property.
The purpose of this utility model is achieved in that on the chassis dynamometer of original hydraulic dynamometer or eddy current absorption dynamometer formula and installs drive motor additional, is rotated and measured a kind of device of output power of motor by motor drives device for power absorption, cylinder, wheel and automotive transmission.Its structure accompanying drawings is as follows:
The anti-proving installation that drags of road simulation dynamometer is by measurement of power, counter dragging, flywheel group and display part are formed, test cylinder 3 and back-up roller 4 are arranged in parallel, test cylinder 3 one ends are equipped with absorption of power device 1, the other end is equipped with anti-motor 7 and the flywheel group 9 of dragging, the anti-motor 7 that drags is installed on the support frame 8, and can rotate around pivot shaft, absorption of power device 1 and instead drag the cantilever on motor 7 shells to be supported on respectively on force transducer 2 and the tension-compression sensor 6, one end of test cylinder 3 and back-up roller 4 is equipped with test the speed rotating disk 13 and speed sensor 12 respectively, flywheel group 9 is supported on the flywheel group support frame 10, and is connected with the test cylinder 4 of dynamometer by Transmission 5.
The utlity model has following advantage and effect:
1) can realize that high efficiency detects, and to satisfy detection line productive temp (8 ~ 10 minutes /), helps the vehicle class evaluation work and finishes smoothly.
2) realize accurately detecting, the dynamic property problem of different automobile types, different vehicle condition automobiles can not be accurately estimated in basic solution at present on the principle.
3) realize correctly estimating, utilize the anti-chassis power-measuring system that drags, under different testing conditions, can both carry out correct evaluation the dynamic property of automobile.
4) can measure motor tire loss power size and transmission system wasted power size on dynamometer roller substantially.Thereby the technology status of identification driving engine and transmission system.
5) the anti-test macro that drags can realize on original chassis dynamo test platform that the cost of the original relatively dynamometer of its cost is very low, just can realize accurately measuring the function of engine output size with fund seldom.
6) power-measuring system is equipped with rational inertial flywheel group, can tests and estimate the acceleration capability of automobile and coasting distance etc.
The utility model has changed the shortcoming that existing chassis dynamometer can't be measured different vehicle in use transmission system wasted power sizes and tire wasted power size on cylinder, uses the anti-system of dragging can realize accurately evaluating the purpose of the true dynamic property of driving engine; Reasonable classification and layout by to flywheel have improved the measuring accuracy to the car acceleration performance.
Concrete structure of the present utility model is provided by following examples and accompanying drawing thereof.
Fig. 1 is according to anti-test macro and the flywheel block device perspective view of dragging of road simulation dynamometer that the utility model proposes.
Below in conjunction with details and the service condition of accompanying drawing detailed description according to the concrete device that the utility model proposes.
Anti-system and the flywheel block device of dragging of chassis dynamometer is that the repacking interpolation forms on the chassis dynamometer basis.Whole car dynamic property evaluation system basic structure is made up of power-measuring system, anti-system, flywheel block device and the display system of dragging.Power-measuring system is made up of test cylinder, back-up roller, mechanical framework, force-input device and measuring system etc.The anti-system of dragging is made up of anti-motor, force gauge, front and back drum speed sensor, the frequency converter (controlling anti-starting and starting of dragging motor) etc. of dragging.Flywheel block device is made up of flywheels at different levels, bracing or strutting arrangement, magnetic clutch, transmission belt, coupler etc.Display system is made up of instrument, control circuit etc.Test cylinder one end of chassis dynamometer is equipped with the absorption of power device, and the other end is equipped with anti-motor and the flywheel block device of dragging, and flywheel block device is to be connected by transmission belt with the anti-motor that drags.But the motor horsepower output is measured in anti-rotation of dragging parts such as motor head roll, wheel and transmission system, the final size that realizes measuring chassis dynamometer each drive disk assembly consumed power under the measurement of power state.Flywheel block device links to each other with dynamometer test cylinder by belt in an anti-side of dragging motor.Utilize anti-purpose of dragging system and flywheel block device finally to realize the comprehensive evaluation engine power performance.
Said flywheel group 9 is to have the flywheel with multistage rotor inertia to form, and each flywheel matches by magnetic clutch and flywheel shaft.
Chassis dynamometer flywheel group can the simulated automotive resistance due to acceleration realizing test to the car acceleration ability, the kinetic energy when store automobiles is travelled is realized the test of coasting distance and is judged the resistance of vehicle transmission and driving system in view of the above.Obviously, scientifically determine the rotor inertia of fly wheel system, have great important for the measuring accuracy of car acceleration ability and coasting distance according to tested vehicle.
The flywheel block device principle of design is: 1, determine the rotor inertia of flywheel and the number of flywheel group according to dichotomy; 2, under the situation that the flywheel block device integral structure allows, the flywheel that rotor inertia is the same is designed to major diameter as far as possible, can reduce the quality of flywheel like this; 3, the flywheel of large rotating inertia should be arranged in the both sides of flywheel group as far as possible, to reduce the moment of flexure distortion of flywheel shaft.4, the flywheel diameter of whole flywheel group is designed to three kinds or four kinds, can conveniently process and arrange.
As shown in Figure 1, test cylinder 3 one ends of chassis dynamometer are equipped with absorption of power device 1, and the other end is equipped with the anti-motor 7 that drags, and the anti-motor 7 that drags is installed on the support frame 8, and motor is in suspended state, and promptly motor can rotate around pivot shaft.Instead drag cantilever support on motor 7 shells on tension-compression sensor 6, tension-compression sensor 6 other ends are fixed on the mechanical framework, and tension-compression sensor 6 can be measured the anti-anti-suffered tangential force of motor 7 that drags under the state that drags.Force transducer 2 can be measured the suffered power of absorption of power device under the measurement of power state.Test the speed rotating disk 13 and speed sensor 12 can be measured the rotating speed of cylinder, and according to formula P=FV, the power and the drum rotation speed that pass through to be surveyed can calculate absorption of power device absorbed power size and the anti-motor horsepower output size of dragging.
Flywheel group 9 is installed on the flywheel group support frame 10, and each flywheel matches by magnetic clutch and flywheel shaft.The clutch of power-transfer clutch can determine whether rotate when the car acceleration performance testing.Flywheel group 9 interrelates by belt 5 and dynamometer test cylinder 4.Can drive 9 rotations of flywheel group during cylinder 4 rotations.
Testing process is: at first, driving engine carries out measurement of power under positive type of drive, be that (this rotating speed is lower for the rotating speed of absorption of power device when being controlled at driving engine max. output torque point, easily survey), engine drive dynamometer cylinder and the running of absorption of power device, throttle is opened to maximum, measures absorption of power device absorbed power P
DyUnder same rotating speed, utilize counter drag driven by motor cylinder and transmission system running, measure motor horsepower output P
d, then driving engine is P at the torque peak point output power
e=P
Dy+ P
dDuring the acceleration capability test,, go out required flywheel group rotor inertia size by COMPUTER CALCULATION according to the quality of tested car.Control the clutch of magnetic clutch then, the reasonable combination flywheel makes the as far as possible accurately translatory mass of simulated automotive of flywheel group.The last test automobile accelerates to the required time Δ t of another rotating speed at direct speed from a certain rotating speed, according to the acceleration capability of Δ t evaluation automobile.
Claims (3)
1. the anti-proving installation that drags of road simulation dynamometer is by measurement of power, counter dragging, flywheel group and display part are formed, it is characterized in that testing cylinder (3) and back-up roller (4) is arranged in parallel, test cylinder (3) one ends are equipped with absorption of power device (1), the other end is equipped with anti-motor (7) and the flywheel group (9) of dragging, the anti-motor (7) that drags is installed on the support frame (8), and can rotate around pivot shaft, absorption of power device (1) and instead drag the cantilever on motor (7) shell to be supported on respectively on force transducer (2) and the tension-compression sensor (6), one end of test cylinder (3) and back-up roller (4) is equipped with rotating disk that tests the speed (13) and speed sensor (12) respectively, flywheel group (9) is supported on the flywheel group support frame (10), and is connected with the test cylinder (4) of dynamometer by Transmission (5).
2. by the anti-proving installation that drags of the described road simulation dynamometer of claim 1, it is characterized in that said flywheel group (9) is to have the flywheel with multistage rotor inertia to form, each flywheel matches by magnetic clutch and flywheel shaft.
3. by claim 1 or the anti-proving installation that drags of 2 described road simulation dynamometeres, the flywheel diameter that it is characterized in that said flywheel group (9) can design three kinds or four kinds, the flywheel of large rotating inertia should be arranged in the both sides of flywheel group as far as possible, and the flywheel of rotor inertia unanimity should be designed to major diameter as far as possible.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01240949 CN2476468Y (en) | 2001-03-28 | 2001-03-28 | Back-pull testing device for vehicle chassis function test machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01240949 CN2476468Y (en) | 2001-03-28 | 2001-03-28 | Back-pull testing device for vehicle chassis function test machine |
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| Publication Number | Publication Date |
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| CN2476468Y true CN2476468Y (en) | 2002-02-13 |
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| CN 01240949 Expired - Fee Related CN2476468Y (en) | 2001-03-28 | 2001-03-28 | Back-pull testing device for vehicle chassis function test machine |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100516802C (en) * | 2005-12-16 | 2009-07-22 | 比亚迪股份有限公司 | Inertia determination of automobile |
| CN100585367C (en) * | 2007-04-16 | 2010-01-27 | 吉林大学 | Accurately subdivided automobile chassis roller test bench flywheel system |
| CN102840985A (en) * | 2012-09-12 | 2012-12-26 | 安徽江淮汽车股份有限公司 | Engine test system |
| CN105136481A (en) * | 2015-09-30 | 2015-12-09 | 广州番禺宏昌机电设备制造有限公司 | Motorcycle acceleration test device |
| CN106461507A (en) * | 2015-03-06 | 2017-02-22 | 株式会社堀场制作所 | Vehicle testing device, vehicle testing method, and program for vehicle testing device |
| CN108375436A (en) * | 2017-12-29 | 2018-08-07 | 杭州威衡科技有限公司 | A kind of pure electric automobile 4 wheel driven chassis dynamometer system |
| CN108548677A (en) * | 2018-04-04 | 2018-09-18 | 上海隆伍测控技术合伙企业（有限合伙） | Chassis dynamometer and intelligent automobile testing stand comprising chassis dynamometer |
| CN109682517A (en) * | 2018-12-25 | 2019-04-26 | 太原理工大学 | Flame-proof rubber-tired cart chassis power detection device and its detection method |
| CN110646224A (en) * | 2019-10-10 | 2020-01-03 | 中国人民解放军陆军工程大学 | Method for measuring instantaneous output power of vehicle drive wheels |
| CN111094928A (en) * | 2017-09-15 | 2020-05-01 | 东洋电机制造株式会社 | Load motor for chassis dynamometer |
-
2001
- 2001-03-28 CN CN 01240949 patent/CN2476468Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100516802C (en) * | 2005-12-16 | 2009-07-22 | 比亚迪股份有限公司 | Inertia determination of automobile |
| CN100585367C (en) * | 2007-04-16 | 2010-01-27 | 吉林大学 | Accurately subdivided automobile chassis roller test bench flywheel system |
| CN102840985A (en) * | 2012-09-12 | 2012-12-26 | 安徽江淮汽车股份有限公司 | Engine test system |
| CN106461507A (en) * | 2015-03-06 | 2017-02-22 | 株式会社堀场制作所 | Vehicle testing device, vehicle testing method, and program for vehicle testing device |
| US11385135B2 (en) | 2015-03-06 | 2022-07-12 | Horiba, Ltd. | Vehicle test device, vehicle test method and program for vehicle test device |
| CN106461507B (en) * | 2015-03-06 | 2019-12-10 | 株式会社堀场制作所 | Vehicle testing device and vehicle testing method |
| CN105136481A (en) * | 2015-09-30 | 2015-12-09 | 广州番禺宏昌机电设备制造有限公司 | Motorcycle acceleration test device |
| CN111094928B (en) * | 2017-09-15 | 2022-02-11 | 东洋电机制造株式会社 | Load motor for chassis dynamometer |
| CN111094928A (en) * | 2017-09-15 | 2020-05-01 | 东洋电机制造株式会社 | Load motor for chassis dynamometer |
| CN108375436B (en) * | 2017-12-29 | 2020-11-06 | 杭州威衡科技有限公司 | Four-wheel drive chassis power measuring system of pure electric vehicle |
| CN108375436A (en) * | 2017-12-29 | 2018-08-07 | 杭州威衡科技有限公司 | A kind of pure electric automobile 4 wheel driven chassis dynamometer system |
| CN108548677A (en) * | 2018-04-04 | 2018-09-18 | 上海隆伍测控技术合伙企业（有限合伙） | Chassis dynamometer and intelligent automobile testing stand comprising chassis dynamometer |
| CN109682517A (en) * | 2018-12-25 | 2019-04-26 | 太原理工大学 | Flame-proof rubber-tired cart chassis power detection device and its detection method |
| CN110646224A (en) * | 2019-10-10 | 2020-01-03 | 中国人民解放军陆军工程大学 | Method for measuring instantaneous output power of vehicle drive wheels |
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