CN202649092U - Brake-type friction coefficient test instrument - Google Patents
Brake-type friction coefficient test instrument Download PDFInfo
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- CN202649092U CN202649092U CN 201220318450 CN201220318450U CN202649092U CN 202649092 U CN202649092 U CN 202649092U CN 201220318450 CN201220318450 CN 201220318450 CN 201220318450 U CN201220318450 U CN 201220318450U CN 202649092 U CN202649092 U CN 202649092U
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- road surface
- friction coefficient
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Abstract
The utility model provides a brake-type friction coefficient test instrument which comprises a frame component and a testing component arranged inside the frame component. The brake-type friction coefficient test instrument can rationally simulate the friction between a tire and a road surface after a vehicle brakes under actual conditions, integrates the characteristics of a single-point test device and a brake-type test device, can test an event or a road surface both indoors and outdoors, and can measure a larger range of road surface in one step. The brake-type friction coefficient test instrument provides an objective evaluation on the overall skid resistance of a road, and both the equipment structure and the operation process are as simple and convenient as possible, which facilitates the use for different types of road surfaces. Besides, the brake-type friction coefficient test instrument has the advantages of simple principle, convenience in operation and accurate and rapid test, can achieve purposes of testing and evaluating the skid resistance of a road surface in rapid, objective, accurate and highly-efficiently manners, can achieve the predetermined target rapidly and conveniently, and has wide application values.
Description
Technical field
The utility model belongs to the PVvalue testing field, relates to a kind of testing device for friction coefficient, especially a kind of braking type PVvalue testing instrument.
Background technology
The antiskid problem on road surface is one of weak link of its build technology, and especially in the winter time, rainy season and highway bend place, vehicle slip, out of control often occurs on the road surface of anti-slide performance deficiency, causes casualties and property loss.Because cling property and the travel safety on road surface are closely related, the cling property on road surface is subjected to the many factors such as weather (weather), road table situation, and advanced checkout equipment and technology seem particularly important.And present pavement skid resistance condition checkout equipment, technology and the evaluation method of China Shortcomings also aspect a lot of is compared still aobvious the backwardness with external advanced country.
Road pavement is carried out cling property and is measured at first and carry out according to the concept of friction mechanics, relates to friction mechanical function between vehicle tyre and the ground surface material and the analysis of other influence factor.Developed country (such as Britain, France and the U.S. etc.) just begins the research of highway pavement cling property measuring technology in late 1920s, has held again afterwards several road-surface features international conferences.Research contents relates generally to measuring friction coefficient technology and the problems such as friction mechanism, smooth accident and antiskid standard, and these researchs provide theoretical foundation and practical experience, and countries in the world are developed many surface friction coefficient test facilities and instrumentses accordingly one after another.For example, the pendulum friction coefficient determinator of Britain TRRL development.Its characteristics are one-point measurement, and principle is simple, not only can be used for indoorly, and can be used for the antiskid value on field measuring road surface, and pendulum friction coefficient determinator is easy to carry, and are simple to operate.And portable pendulum tester can only be at the friction factor of measuring under the single-point sampling condition under a kind of speed, and the method can only reflect the pavement skid resistance condition the when speed of a motor vehicle is low, and low, the representative difference of precision can't satisfy the needs of high grade highway development.The dynamic friction coefficient analyzer that Japan makes.The characteristics of this device are to be easy to carry, and finding speed is fast, and finding speed is fast, and mensuration and data are recorded in the very short time and finish simultaneously, can measure the friction co-efficient value in single sample point 0-80km/h scope.The shortcoming of this equipment is that the little measured value mutability of single-time measurement area is large.
The utility model content
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, a kind of braking type PVvalue testing instrument is provided, this device to test principle is simple, easy and simple to handle, test accurately, fast, can realize that quick, objective, accurate, high-level efficiency detects and estimates pavement skid resistance condition.The detection of testing apparatus and the manufacturing expense of instrument are very low, and all elements of instrument are domestic, and use, easy to maintenance, and this testing apparatus good reliability are conducive to applying of this equipment.
The purpose of this utility model solves by the following technical programs:
A kind of braking type PVvalue testing instrument comprises frame parts, and the test component of the section that sets within it.
The said frame parts are comprised of test component framework and axle two; Described test component framework is arranged on the test component outside; Described axle two crosses two post limits of test component framework, and is arranged on the middle part of test component framework; The low side on described test component framework two post limits is provided with the trundle that supports whole device.
Above-mentioned test component comprises fan-shaped friction piece, and the axle one that crosses the test component framework upper; Described axle one is connected with fan-shaped friction piece by little prism, is provided with pressure display unit on the described little prism; Described test component is by fan-shaped friction piece and joint, road surface.
Above-mentioned little prism is a kind of pressure transducer.
Above-mentioned fan-shaped friction piece is the fan-shaped friction piece that the bottom is provided with the rubber for tire layer.
The utility model is the friction effect on vehicle braking rear-wheel tire and road surface under the simulating actual conditions reasonably, characteristics in conjunction with single-point type test unit and brake type test unit, can can test event or road surface outdoor again indoor, can the wider road surface of disposable measurement range.The antiskid level of evaluation path integral body objectively is at device structure with use aspect the flow process two all as much as possible simple and convenient, so that the use on all kinds road surface; Simultaneously simple, easy and simple to handle, the test of the utility model test philosophy can realize that quick, objective, accurate, high-level efficiency detects and estimates pavement skid resistance condition, can realize being with a wide range of applications the set goal quickly and easily accurately, fast.
Description of drawings
Fig. 1 is front elevational view of the present utility model;
Fig. 2 is that figure is cutd open on a left side of the present utility model;
Fig. 3 is that the utility model axle one contacts detail view with sensor;
Fig. 4 is three-dimensional plot of the present utility model.
Wherein: 1 is axle one; 2 is the proving installation framework; 3 is axle two; 4 is fan-shaped friction piece; 5 is trundle; 6 is the road surface; 7 is pressure display unit; 8 is little prism.
Embodiment
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail:
Referring to Fig. 1-3, a kind of braking type PVvalue testing instrument comprises frame parts, and the test component of the section that sets within it.
The said frame parts are comprised of test component framework 2 and axle 23; Described test component framework 2 is arranged on the test component outside; Described axle 23 crosses two post limits of test component framework 2, and is arranged on the middle part of test component framework 2; The low side on 2 liang of post limits of described test component framework is provided with the trundle 5 that supports whole device.
Above-mentioned test component comprises fan-shaped friction piece 4, and the axle 1 that crosses test component framework 2 tops; Described axle 1 is connected with fan-shaped friction piece 4 by little prism 8, is provided with pressure display unit 7 on the described little prism 8; Described test component is by fan- shaped friction piece 4 and 6 joints, road surface.
Above-mentioned little prism 8 is a kind of pressure transducer.
Above-mentioned fan-shaped friction piece 4 is provided with the fan-shaped friction piece of rubber for tire layer for the bottom.
Concrete operation method is as follows:
The utility model is lain in a horizontal plane on the test road surface, adjust the screw cap on axle 23 both sides, make fan-shaped friction piece 4 occupy the centre of framed structure 2.Then adjust the height of axle 1, little prism 8 pressure transducers are on the suitable position; Open pressure display unit 7, and the Level Promoting testing apparatus, make fan-shaped friction piece 4 and rut plate or road surface 6 that relative motion occur; On the pressure display unit 7 with range of a signal and pressure curve and this mean value apart from internal pressure, calculate the mean pressure on this test section, this pressure is the mean value of friction force between fan-shaped friction piece 4 bottom wheel tire rubber layers and the ground, then obtains friction factor according to the quality of fan-shaped friction piece 4 and the mean value calculation of gained friction force.
The utility model can be tested the friction factor on different road surfaces in the road engineering, and the friction factor of road surface under the environmental baselines such as different temperatures humidity.Thereby for rational Road Design provides reliable basis.Therefore the utility model is a kind of so far more satisfactory and testing apparatus of science.Technique can apply to can realize quickly and easily being with a wide range of applications the set goal in the surface friction coefficient test.
Claims (5)
1. braking type PVvalue testing instrument is characterized in that: comprise frame parts, and the test component of the section that sets within it.
2. a kind of braking type PVvalue testing instrument according to claim 1, it is characterized in that: described frame parts is comprised of test component framework (2) and axle two (3); Described test component framework (2) is arranged on the test component outside; Described axle two (3) crosses two post limits of test component framework (2), and is arranged on the middle part of test component framework (2); The low side on described test component framework (2) two post limits is provided with the trundle (5) that supports whole device.
3. a kind of braking type PVvalue testing instrument according to claim 1, it is characterized in that: described test component comprises fan-shaped friction piece (4), and the axle one (1) that crosses test component framework (2) top; Described axle one (1) is connected with fan-shaped friction piece (4) by little prism (8), is provided with pressure display unit (7) on the described little prism (8); Described test component is by fan-shaped friction piece (4) and joint, road surface (6).
4. a kind of braking type PVvalue testing instrument according to claim 3, it is characterized in that: described little prism (8) is a kind of pressure transducer.
5. a kind of braking type PVvalue testing instrument according to claim 3, it is characterized in that: described fan-shaped friction piece (4) is provided with the fan-shaped friction piece of rubber for tire layer for the bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220318450 CN202649092U (en) | 2012-07-03 | 2012-07-03 | Brake-type friction coefficient test instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220318450 CN202649092U (en) | 2012-07-03 | 2012-07-03 | Brake-type friction coefficient test instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202649092U true CN202649092U (en) | 2013-01-02 |
Family
ID=47418184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220318450 Expired - Fee Related CN202649092U (en) | 2012-07-03 | 2012-07-03 | Brake-type friction coefficient test instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202649092U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749281A (en) * | 2012-07-03 | 2012-10-24 | 长安大学 | Braking type large-scale friction coefficient measuring apparatus |
| CN106702861A (en) * | 2017-03-21 | 2017-05-24 | 中汽中心盐城汽车试验场有限公司 | Grinding trailer for testing road surfaces and grinding vehicle group |
| CN108801902A (en) * | 2018-04-26 | 2018-11-13 | 江铃控股有限公司 | A kind of automotive friction power simulation board |
-
2012
- 2012-07-03 CN CN 201220318450 patent/CN202649092U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749281A (en) * | 2012-07-03 | 2012-10-24 | 长安大学 | Braking type large-scale friction coefficient measuring apparatus |
| CN106702861A (en) * | 2017-03-21 | 2017-05-24 | 中汽中心盐城汽车试验场有限公司 | Grinding trailer for testing road surfaces and grinding vehicle group |
| CN108801902A (en) * | 2018-04-26 | 2018-11-13 | 江铃控股有限公司 | A kind of automotive friction power simulation board |
| CN108801902B (en) * | 2018-04-26 | 2021-07-06 | 江铃控股有限公司 | Automobile friction force simulation machine platform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20160703 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |