CN108680363B - Adhesion coefficient detection method - Google Patents
Adhesion coefficient detection method Download PDFInfo
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- CN108680363B CN108680363B CN201810235159.XA CN201810235159A CN108680363B CN 108680363 B CN108680363 B CN 108680363B CN 201810235159 A CN201810235159 A CN 201810235159A CN 108680363 B CN108680363 B CN 108680363B
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- supporting leg
- adhesion coefficient
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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Abstract
The invention relates to an adhesion coefficient detection method, which comprises the following steps that firstly, a circulating transmission body of an adhesion coefficient tester is arranged on a corresponding base surface to be detected, the adhesion coefficient tester comprises a tester support with a front supporting leg and a rear supporting leg, a weighing sensor is connected in series with the front supporting leg, the bottom of the front supporting leg is provided with a circulating body support, the circulating body support is provided with a circulating transmission body driven by a power mechanism, and a force sensor for detecting the stress of the circulating body support in the front and rear directions is arranged between the circulating body support and the tester support; secondly, an operator stands on the personnel standing platform, the circulating transmission body rotates under the driving of the power mechanism, and when the circulating transmission body slips from the roller or the braking platform, the reading N of the weighing sensor and the maximum reading F of the force sensor in the process are recorded; and thirdly, the adhesion coefficient mu = F/N of the braking force test platform. The invention provides an adhesion coefficient detection method for a braking force detection platform.
Description
Technical Field
The present invention relates to an adhesion coefficient detection method for detecting an adhesion coefficient.
Background
The braking force of an automobile needs to be detected by using a braking force detection platform, common braking force detection platforms comprise a flat braking force detection platform and a roller type braking force detection platform, the existing roller type braking force detection platform is disclosed as 'a roller type counter-force type automobile braking detection platform' in Chinese patent CN202928808U, the roller type counter-force type automobile braking detection platform comprises two pairs of rollers, each pair of rollers comprises a driving roller and a driven roller, when the automobile braking device is used, wheels of the detected automobile are placed on the driving roller and the driven roller, the driving roller drives the wheels to rotate, the automobile brakes, and the braking force of the automobile is detected by a force measurement sensor connected to the rollers. The roller is equivalent to a movable road surface, is used for supporting the wheel of the vehicle to be detected and bears and transmits braking force, the adhesion coefficient between the automobile tire and the roller directly influences the magnitude of the braking force which can be measured by a braking test stand, and in order to increase the adhesion coefficient of the roller, the roller is generally provided with a longitudinal shallow groove, or bonded with alumina sand grains, or provided with a sand embedding spray welding layer and the like. The corresponding flat plate rebate type automobile brake inspection platform comprises a brake flat plate used for simulating a road surface, and the adhesion coefficient between the brake flat plate and an automobile forum is also important. According to design requirements, the brake test platform is required to provide a specific adhesion coefficient, but the adhesion coefficient provided by the brake test platform cannot be accurately measured in the prior art.
Disclosure of Invention
The invention aims to provide an adhesion coefficient detection method capable of detecting the adhesion coefficient of a base surface to be detected.
In order to solve the technical problems, the technical scheme of the invention is as follows:
an adhesion coefficient detection method comprises the following steps that firstly, a circulating transmission body of an adhesion coefficient tester is arranged on a corresponding base surface to be detected, the adhesion coefficient tester comprises a tester support with a front supporting leg and a rear supporting leg, the tester support further comprises a personnel standing platform arranged at the tops of the front supporting leg and the rear supporting leg, a weighing sensor is connected in series with the front supporting leg, a circulating body support is arranged at the bottom of the front supporting leg, a circulating transmission body driven by a power mechanism is arranged on the circulating body support, and a force sensor used for detecting the stress of the circulating body support in the front and rear directions is arranged between the circulating body support and the tester support; secondly, an operator stands on the personnel standing platform, the circulating transmission body rotates under the driving of the power mechanism, and when the circulating transmission body slips from the roller or the braking platform, the reading N of the weighing sensor and the maximum reading F of the force sensor in the process are recorded; and thirdly, the adhesion coefficient mu = F/N of the braking force test platform.
The operator can move back and forth on the personnel standing platform to change the value of N so as to obtain different groups of detection data.
The bottom of the rear supporting leg is of a tip structure.
The front end and the rear end of the personnel standing platform are respectively hinged with the front supporting leg and the rear supporting leg through a hinge structure extending along the left-right direction through a hinge axis.
The lower end of the front supporting leg is hinged with the circulating body support, a pull rod or a pull rope is connected between the hinged point of the front supporting leg connected with the circulating body support and the tester support, and the force sensor is connected in series with the pull rod or the pull rope.
The tester support is still including setting up in preceding landing leg and back landing leg top the personnel stand the platform, the personnel stand and are provided with the handrail of standing that extends along the fore-and-aft direction on the platform.
The invention has the beneficial effects that: when the device is used, the circulating transmission body is arranged on a base surface to be detected, the base surface to be detected refers to the surface needing adhesion coefficient detection, such as the outer peripheral surface of a roller, the table surface of a braking platform and the like, the power mechanism drives the circulating transmission body to rotate, positive pressure is provided by a person on a balance weight platform or a person standing table, the positive pressure N is detected by the weighing sensor, the maximum tensile force F borne by the circulating body support is detected by the force sensor, and the adhesion coefficient of the roller or the braking platform can be calculated according to F = mu N. The person standing on the platform provides positive pressure, so that the whole weight of the whole tester is not required to be too large, the tester is convenient to transport and carry, in addition, the person is flexible, and the person walks forwards and backwards on the platform to change the position, so that the size of the positive pressure is changed, and a plurality of groups of detection data are obtained.
Drawings
FIG. 1 is a schematic structural view of embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
Detailed Description
Example 1 of an adhesion coefficient detection method is shown in fig. 1: the method comprises the following steps that firstly, a circulation transmission body of an adhesion coefficient tester is arranged on a corresponding base surface to be detected, secondly, an operator stands on a personnel standing platform, the circulation transmission body rotates under the driving of a power mechanism, and when the circulation transmission body slips with a roller or a braking platform, the indication number N of a weighing sensor and the maximum indication number F of a force sensor are recorded; and thirdly, the adhesion coefficient mu = F/N of the braking force test platform. Wherein the adhesion coefficient tester is including the tester support 3 that has preceding landing leg 9 and back landing leg 2, tester support 3 is still including setting up in the personnel platform 4 of standing at preceding landing leg and back landing leg top, the front end that the personnel stood the platform links to each other through preceding hinge structure is articulated with preceding landing leg top, the rear end that the personnel stood the platform links to each other through back hinge structure is articulated with back landing leg top, it is preceding, back hinge structure's articulated axis extends the setting along the left and right directions, preceding hinge structure, back hinge structure all includes the axis along the axis about the axis the axle sleeve that extends and wear to locate the articulated shaft in the axle sleeve, the axle sleeve is fixed in on corresponding the landing leg, the articulated shaft is fixed in personnel. The personnel stand the bench and be provided with the handrail 6 that stands that extends along the fore-and-aft direction, and the front end of handrail of standing is provided with front column 8 with personnel between the platform of standing, and the rear end of handrail of standing is provided with rear column 5 with personnel between the platform of standing.
The front support leg is connected with a weighing sensor 10 in series, the bottom of the front support leg is hinged with a circulating body support 18, the circulating body support 18 is integrally of an inverted trapezoid structure, four corners of the circulating body support 18 are respectively provided with four belt wheels, the two belt wheels on the upper side are large belt wheels 13, the two belt wheels on the lower side are small belt wheels 14, the belt wheel on the front side of the two belt wheels on the upper side is a driving belt wheel driven by a motor, a circulating transmission belt 11 is wound on each belt wheel, the circulating transmission belt is a toothed synchronous belt in the embodiment, the circulating transmission belt forms a circulating transmission body, and a plurality of supporting rolling bodies 12 distributed in a circular arc shape are rotatably assembled on the upper side of the circulating transmission belt on the circulating body support. The hinged point of the front supporting leg 9 and the circulating body support is also hinged with a pull rod 16 (or a pull rope) of which the rear end is connected with the circulating body support, and the pull rod is connected in series with a force sensor 17 which is arranged along the front-back direction and is used for detecting the stress of the circulating body support in the front-back direction. The bottom of the rear leg is a point structure 21. The base surface to be detected refers to a surface to be detected for adhesion coefficient, for example, the base surface to be detected in this embodiment refers to a surface of a roller.
The adhesion coefficient tester for the braking force inspection platform in the embodiment 1 is used for the roller reaction type automobile braking inspection platform, and when the adhesion coefficient tester is used, a rear support leg is arranged on a table board at the rear side of a roller, the rear support leg of a top structure can guarantee acting force between the rear support leg and the table board, so that the whole tester support does not displace in the detection process, and in addition, the top structure also enables a person to stand on the table and move back and forth, and the symmetrical weight sensor which can be smooth can generate different pressure values. During the use, the circulating transmission belt 11 is arranged on a roller 15 to be detected, the circulating transmission belt is pressed and deformed by the roller, the supporting rolling body 12 can ensure positive pressure between the circulating transmission belt and the roller, the circulating transmission belt is not in transition deformation, the operator 7 stands on a personnel standing platform to provide enough positive pressure for the whole detection, the operator 7 can change the pressure value by moving back and forth and walking, the motor drives the circulating transmission belt to rotate, the circulating transmission drives the roller to rotate, in the process of slipping, the numerical value N of the weighing sensor and the maximum numerical value F of the force sensor are recorded, and the attachment coefficient mu = F/N. The circulation drive belt of falling the trapezium structure can save space, avoids circulation drive belt and mesa to interfere.
In other embodiments of the invention: the supporting rolling body is not needed; the endless belt can also be replaced by a detection wheel driven by an electric motor, in which case the detection wheel constitutes the endless transmission body.
An embodiment 2 of an adhesion coefficient detection method is shown in fig. 2: the difference between the embodiment 2 and the embodiment 1 is that the supporting rolling bodies 12 are arranged in a straight line in the front-back direction, the adhesion coefficient tester of the invention is used for detecting the adhesion of the braking flat plate 20 of the flat plate counter-force type braking inspection platform, the circulating transmission belt is directly contacted with the braking flat plate, and the adhesion of the braking flat plate is detected when the circulating transmission belt slips. In other embodiments of the invention: the supporting rollers can also be replaced by a supporting plate, the lower plate of which is in sliding abutting fit with the upper side of the bottom of the endless belt. In other embodiments of the present invention, the adhesion coefficient detection method may also be used in any other environment requiring adhesion coefficient detection, such as a road surface.
Claims (5)
1. An adhesion coefficient detection method is characterized in that: the method comprises the following steps that firstly, a circulating transmission body of an adhesion coefficient tester is arranged on a corresponding base surface to be tested, the adhesion coefficient tester comprises a tester support with a front supporting leg and a rear supporting leg, the tester support also comprises a personnel standing platform arranged at the tops of the front supporting leg and the rear supporting leg, a weighing sensor is connected in series with the front supporting leg, a circulating body support is arranged at the bottom of the front supporting leg, the circulating body support is provided with the circulating transmission body driven by a power mechanism, and a force sensor used for detecting the stress of the circulating body support in the front and rear directions is arranged between the circulating body support and the tester support; secondly, an operator stands on the personnel standing platform, the circulating transmission body rotates under the driving of the power mechanism, and when the circulating transmission body slips from the roller or the braking platform, the reading N of the weighing sensor and the maximum reading F of the force sensor in the process are recorded; and thirdly, the adhesion coefficient mu = F/N of the braking force inspection platform, the front end and the rear end of the personnel standing platform are respectively hinged with the front supporting leg and the rear supporting leg through a hinge structure extending along the left-right direction through a hinge axis, and the tester support does not displace in the detection process.
2. The adhesion coefficient detection method according to claim 1, characterized in that: the operator can move back and forth on the personnel standing platform to change the value of N so as to obtain different groups of detection data.
3. The adhesion coefficient detection method according to claim 1, characterized in that: the bottom of the rear supporting leg is of a tip structure.
4. The adhesion coefficient detection method according to claim 1, characterized in that: the lower end of the front supporting leg is hinged with the circulating body support, a pull rod or a pull rope is connected between the hinged point of the front supporting leg connected with the circulating body support and the tester support, and the force sensor is connected in series with the pull rod or the pull rope.
5. The adhesion coefficient detection method according to claim 1 ~ 4, wherein the tester stand further comprises a standing platform for the person provided on top of the front and rear legs, and a standing armrest extending in the front-rear direction is provided on the standing platform for the person.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810235159.XA CN108680363B (en) | 2018-03-21 | 2018-03-21 | Adhesion coefficient detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810235159.XA CN108680363B (en) | 2018-03-21 | 2018-03-21 | Adhesion coefficient detection method |
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| Publication Number | Publication Date |
|---|---|
| CN108680363A CN108680363A (en) | 2018-10-19 |
| CN108680363B true CN108680363B (en) | 2020-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810235159.XA Active CN108680363B (en) | 2018-03-21 | 2018-03-21 | Adhesion coefficient detection method |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2572385Y (en) * | 2002-07-12 | 2003-09-10 | 周申生 | Roller adhersion coefficient test instrument |
| CN103033372B (en) * | 2011-10-09 | 2017-03-15 | 南京农业大学 | A kind of controllable wheel traction of slippage rate and adhesion property test device |
| CN204116204U (en) * | 2014-08-13 | 2015-01-21 | 长沙市路盛仪器设备有限公司 | A kind of coefficient of road adhesion measurement mechanism |
| CN104181101B (en) * | 2014-09-05 | 2016-08-24 | 石家庄铁道大学 | Rail Surface friction coefficient measuring apparatus |
| CN104596920A (en) * | 2015-02-13 | 2015-05-06 | 吉林大学 | Belt driving type rubber friction characteristic test system |
| RU2616436C1 (en) * | 2016-02-29 | 2017-04-14 | Владимир Павлович Бирюков | Method of determining adhesive metal coating strength to the steel surface |
| CN205538057U (en) * | 2016-04-12 | 2016-08-31 | 西南交通大学 | Outdoor automobile tire lateral friction force testing arrangement |
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