CN201152816Y - Apparatus for high speed braking efficiency detection in drum type - Google Patents
Apparatus for high speed braking efficiency detection in drum type Download PDFInfo
- Publication number
- CN201152816Y CN201152816Y CNU2008200441165U CN200820044116U CN201152816Y CN 201152816 Y CN201152816 Y CN 201152816Y CN U2008200441165 U CNU2008200441165 U CN U2008200441165U CN 200820044116 U CN200820044116 U CN 200820044116U CN 201152816 Y CN201152816 Y CN 201152816Y
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Abstract
The utility model discloses a device used in motor vehicle security detection, in particular to a device which is used for carrying out the high speed drum-type detection to the braking efficiency of the motor vehicles. The high speed drum-type device comprises a jack horse 1, four drums 2, a third drum 3, a flywheel set 4, a towing electric motor 5, a high-precision drum instantaneous speed measuring device 6, a pedal force meter 7, an intelligent data acquisition device 8, a computer interface 9 and a detection system 10, wherein, the four drums have a certain adhesion coefficient, the third drum is used for measuring the wheel speed, the flywheel set is used for simulating the automotive inertia, and the detection system is composed of a data analysis software, etc. The device has the advantages that the motor vehicle braking efficiencies such as the braking distance, the braking deceleration, the braking consistency and the braking directional stability, etc. can be detected.
Description
Technical field
The utility model relates to the checkout equipment to automobile brake perfrmance, particularly relates to the device that a kind of high speed rotary-drum formula detects brake efficiency.
Background technology
The anti-lock brake performance of measuring machine motor-car is mainly carried out on the special-purpose road surface of certain attachment coefficient by special volume measurement mechanism at present, and domestic there be limited evidence currently of is tested on stand, even relevant device is abroad arranged, mechanism's complexity involves great expense mostly.The domestic mode of at present detection of automobile brake perfrmance mainly being taked has: anti-force type drum braking pick-up unit (low speed), dull and stereotyped brake detecting device, portable brake performance pick-up unit and Lu Shi detect, these detect to survey devices all is to the detection of brake efficiency under the lower-speed state, but the brake detecting device to ABS can't detect, because the abs braking device is inoperative basically less than 20km/h in speed per hour.Real what threaten vehicle safety travel is brake efficiency under running at high speed, and present also do not have a braking performance detector that can detect under fast state.
Braking ability comprises: the directional stability the when constancy of brake efficiency (braking distance and braking deceleration), brake efficiency, braking.Therefore the correct brake efficiency that detects is the key that detects braking ability.
Summary of the invention
The purpose of this utility model is to be that the device that provides a kind of high speed rotary-drum formula to detect brake efficiency comprises: 1, stand.2, special four cylinders that possess certain attachment coefficient.3, be used to measure the 3rd cylinder of wheel speed.4, the flywheel group that is used for simulated automotive inertia.5, dragging motor.6, high precision cylinder instantaneous velocity measurement mechanism.7, foot brake pedal pressure gauge (optional).8, intelligent data acquisition device.9, computer interface.10, data analysis software etc. cooperates the detection system of forming.The technical scheme that the utility model high speed rotary-drum formula detects the solution that device adopts of brake efficiency is: adopt high precision instantaneous velocity measurement mechanism, can accurately measure drum speed, the i.e. speed of a motor vehicle; Measure cylinder, get and require to have certain attachment coefficient; The flywheel group is mainly used in the inertia of simulating tested automobile, and he is made up of the flywheel of many groups of different tonnages; Dragging motor, his effect are that cylinder is accelerated to more than the measuring speed of ABS appointment; For driving wheel, can not use this motor, can drive by automobile; Lifting platform is convenient to sailing out of of automobile; The doffer of belt wheel speed sensors device (tube claims the 3rd cylinder); Wheel speed sensors.Their composition is used for correctly detecting the constancy of braking distance and the braking deceleration and the brake efficiency of brake efficiency, the directional stability during braking.
High speed rotary-drum formula of the present utility model detects the device of brake efficiency, has machines motor vehicle brake efficiency, provides accurately, advantage fast and easily.
Description of drawings
Accompanying drawing is the structural drawing that the utility model high speed rotary-drum formula detects the device of brake efficiency.
Embodiment
Provide specific embodiment below in conjunction with accompanying drawing and further describe, shown in accompanying drawing, the utility model comprises: high precision cylinder instantaneous velocity measurement mechanism (1); Measure cylinder (2); Flywheel group (3); Dragging motor (4); Lifting platform (5); Doffer (6); Wheel speed sensors (7); Stand compositions such as (8).Their structural relation is: the velocity measuring device (1) of high precision drum-type is installed on stand (8), joins with measurement cylinder (2); Measuring cylinder (2) joins with flywheel group (3); Dragging motor (4) is connected with measurement cylinder (2); Cylinder (6) and the wheel speed sensors (7) of measuring wheel speed are installed in the lifting platform (5); Be fastened between them on the stand (8).
The utility model high speed rotary-drum formula detects the concrete of device of brake efficiency and uses in detail and principle embodiment:
One, automobile ABS brake efficiency pick-up unit whole structure figure:
1～2 is wheel speed vehicle speed measurement device, is installed in respectively on the 3rd cylinder.This device can only axle of one-shot measurement, needs repeatedly to measure respectively when a plurality of axletree is arranged.
3, hang the flywheel actuating unit, system articulates the flywheel group of different quality according to the weight of tested axletree.
4, cylinder speed of a motor vehicle survey sensor, he uses and measures drum speed, and the linear velocity of cylinder surface equates with the linear velocity of doughnut.
5, " intelligent processor " he be the central module of entire measuring device.
6, " computing machine " he can adopt laptop computer, can take wired mode or wireless mode to be connected between or the desk-top computer, intelligent processor and computing machine.
7, " foot brake pedal pressure gauge " this device is for selectable unit, uses when being mainly used to analyze pedal force concerning between brake efficiency.
Two, to automobile ABS brake efficiency pick-up unit schematic diagram:
Three, products characteristics and principle of work:
The principal feature of this product is, the general brake efficiency that detects band ABS all need carry out on the road surface, occupied ground is big, inconvenient operation, and the testing agency that we design this bench type has replaced the not checkout equipment of energy measurement abs braking usefulness of traditional road formula and those lower-speed states fully.
Also this technology can be attached on the chassis dynamometer of new production, realize the effect of one-machine-multi-function.Because what increase the whole employings of device is the outer linear velocity that high-precision sensor is directly measured wheel, irrelevant with simulation road speed and detected tyre diameter, so he can accurately measure the speed of each wheel, can accurately measure the braking distance of each wheel, comprise the coasting distance behind the wheel lock up, can accurately judge the wheel braking running deviation value.This product design is rational in infrastructure easy for installation.
Principle of work is, the intelligent data acquisition device is by being installed in the high precision vehicle speed sensor of measuring on the cylinder, with the high precision velocity sensor that is installed on the 3rd cylinder (wheel speed measurement doffer), because speed of a motor vehicle high-precision sensor is directly measured the outer linear velocity of wheel, irrelevant with simulation road speed and detected tyre diameter, so he can accurately measure the speed of each wheel, can accurately measure the braking distance of each wheel, comprise the coasting distance behind the wheel lock up, can accurately judge the wheel braking running deviation value.Measure in real time and the speed of a motor vehicle and the wheel speed of registration of vehicle in braking procedure, and brake pedal force, the built-in large-scale data-carrier store of system, system is pushed down on the pedal and the stop instantaneous velocity and the distance of overall process of vehicle all noted from beginning to point out, can and show the brake efficiency curve map by the computing machine accurate Calculation.
Four, the comparison of like product
We detect brake efficiency and mainly contain following mode at present: 1, drum-type braking experiment table.2, flat braking experiment table.3, fifth wheel instrument.4, road examination.
Braking brake performance under the lower-speed state that drum-type braking experiment table and flat braking experiment table are automobiles more can not detect the brake efficiency of being with ABS.Fifth wheel instrument can measured automobiles true velocity, but accurately measured automobiles each can speed, thereby can not accurately judge the coasting distance of automobile.Road examination is a kind of tradition and practical method, by automobile fast braking under certain speed, observe the impression on ground and drag seal to judge the brake efficiency of automobile, shortcoming be he accurately measured automobiles impression and drag the precise length of seal, can't know automobile is braked under which kind of speed of a motor vehicle, which type of on road surface, brake, so he can not carry out quantitative test to automobile.Can only give a preliminary qualitative results.
This equipment is saved place, the initial velocity in the time of accurately measuring automobile brake, impression distance, skidding distance, braking deceleration, pedal force, reaches each time-parameters curve map.Can analyze the brake efficiency of automobile quantitatively.Can be widely used in each safety detection unit, Auto repair shop, automobile making unit and R﹠D institution.
Five, the use of product
For the automobile brake perfrmance of band ABS, because ABS allows locking less than 20km/h the time, so must carry out under automobile 40～50km/h, this device can only be measured an axle simultaneously, and this just requires spool ground of axle of tested vechicle to measure.Trial assembly is put if system's coupling shaft is resurveyed, and system can calculate the inertia of this coupling, selects the flywheel group automatically.
Be measured as example explanation using method with an axle below.At first tested axletree is stopped to equipment platform, system's automatic control platform descends then, if this axle is not a driving shaft, neutral can be pointed out by system, gets off the brakes then, and system can hang up the flywheel with this close inertia, start the anti-motor that drags then, the cylinder linear velocity is accelerated to 50km/h.Stablize several seconds relief automobile slides, wait to slide into (generally setting 40km/h) after the fixing speed, hang up foot brake pedal pressure gauge, prompting touches on the brake.When brake was stepped on, the intelligent data acquisition device write down left and right sides wheel speed respectively, and the speed of a motor vehicle (drum speed) and pedal force are stopped up to cylinder.System can analyze according to recorded data, and wheel is imitated in the braking that draws this, comprises series of parameters such as impression distance, skidding distance, brake pedal force, average retardation rate, instantaneous braking force.Provide the brake efficiency analysis result of this car by data analysis software.Or directly the log-on data printing is directly printed testing result, and detection finishes.
The device advantage of high speed braking efficiency detection in drum type of the present utility model is: detects accurately, and efficient and convenient, be worth Apply.
Claims (1)
1, a kind of high speed rotary-drum formula detects the device of brake efficiency, and it comprises: high precision cylinder instantaneous velocity measurement mechanism (1); Measure cylinder (2); Flywheel group (3); Dragging motor (4); Lifting platform (5); Doffer (6); Wheel speed sensors (7); Stand (8) is formed, and it is characterized in that: the velocity measuring device (1) that the high precision drum-type is installed on stand (8); Join with measurement cylinder (2); Measuring cylinder (2) joins with flywheel group (3); Dragging motor (4) is connected with measurement cylinder (2); Cylinder (6) and the wheel speed sensors (7) of measuring wheel speed are installed in the lifting platform (5); Be fastened between them on the stand (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200441165U CN201152816Y (en) | 2008-02-20 | 2008-02-20 | Apparatus for high speed braking efficiency detection in drum type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200441165U CN201152816Y (en) | 2008-02-20 | 2008-02-20 | Apparatus for high speed braking efficiency detection in drum type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201152816Y true CN201152816Y (en) | 2008-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200441165U Expired - Fee Related CN201152816Y (en) | 2008-02-20 | 2008-02-20 | Apparatus for high speed braking efficiency detection in drum type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201152816Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592136A (en) * | 2013-10-24 | 2014-02-19 | 中国第一汽车股份有限公司 | Method and system for determining sedan braking force coefficient and sliding ratio curve |
| CN108362414A (en) * | 2018-04-18 | 2018-08-03 | 北京博科测试系统股份有限公司 | A kind of new automobile emission test road load system |
| CN109506817A (en) * | 2018-10-18 | 2019-03-22 | 珠海高新区同力机械有限公司 | A kind of motor-vehicle chassis measurement of power equipment |
| CN110296846A (en) * | 2018-03-22 | 2019-10-01 | 陕西汽车集团有限责任公司 | Commercial tyre pressure and brake efficacy monitoring system, monitoring method and the commercial vehicle |
-
2008
- 2008-02-20 CN CNU2008200441165U patent/CN201152816Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592136A (en) * | 2013-10-24 | 2014-02-19 | 中国第一汽车股份有限公司 | Method and system for determining sedan braking force coefficient and sliding ratio curve |
| CN110296846A (en) * | 2018-03-22 | 2019-10-01 | 陕西汽车集团有限责任公司 | Commercial tyre pressure and brake efficacy monitoring system, monitoring method and the commercial vehicle |
| CN108362414A (en) * | 2018-04-18 | 2018-08-03 | 北京博科测试系统股份有限公司 | A kind of new automobile emission test road load system |
| CN109506817A (en) * | 2018-10-18 | 2019-03-22 | 珠海高新区同力机械有限公司 | A kind of motor-vehicle chassis measurement of power equipment |
| CN109506817B (en) * | 2018-10-18 | 2021-09-10 | 珠海同米科技有限公司 | Power measuring equipment for motor vehicle chassis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081119 Termination date: 20110220 |