CN203259455U - Indoor test apparatus of friction coefficient of pavement structural layer - Google Patents
Indoor test apparatus of friction coefficient of pavement structural layer Download PDFInfo
- Publication number
- CN203259455U CN203259455U CN 201320300440 CN201320300440U CN203259455U CN 203259455 U CN203259455 U CN 203259455U CN 201320300440 CN201320300440 CN 201320300440 CN 201320300440 U CN201320300440 U CN 201320300440U CN 203259455 U CN203259455 U CN 203259455U
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- slide rail
- slide
- pavement
- friction
- wheel
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Abstract
The utility model relates to an indoor test apparatus of the friction coefficient of a pavement structural layer. The test apparatus comprises a movable frame (1), a slide rail (2), a slide wheel (3) and a friction plate (4). The slide rail (2) is fixedly connected with the movable frame (1) through welding, the slide wheel (3) can freely downward slide along the slide rail (2), and the friction plate (4) is installed on the slide wheel (3). The slide wheel (3) rubs with the pavement and rotates in the downward sliding process to realize the fixing of the position of the clamping slot (5) of the slide rail (2) by the slide rail. The friction coefficient of the pavement is reflected through the rotation time of the slide wheel (3). The apparatus has the advantages of simple structure, use convenience, stimulation of the friction coefficients of the pavement under different speeds through the release height of the slide wheel, and establishment of a good correlativity with existing friction coefficients of the pavement.
Description
Technical field
The utility model belongs to the road engineering field, relates to a kind of road surface structare layer friction factor indoor measurement device, can be widely used in the mensuration of friction factor in the pavement engineering.
Background technology
The characteristics such as it is quick, safe, efficient, convenient that transport by road has have become very important ingredient in the land communications transportation.Since the rising of the volume of traffic, the raising of the various car speeds of highway, Exploration on Train Operation Safety is especially outstanding, and pavement quality is larger on the traffic safety impact, especially characterizes parameter---the surface friction coefficient of pavement skid resistance condition.The factor that affects surface friction coefficient includes: (1) tire and road surfaces roughness; (2) road surfaces ponding; (3) contact on tire road surface.For the traffic capacity and the safety that guarantee highway, new pavement will be measured its friction factor, also will regularly carry out PVvalue testing to built road, and the variation of monitoring surface friction coefficient is to ensure road surface service quality.
Present measuring friction coefficient means mainly comprise following several, (1) pendulum friction coefficient determinator, according to energy conservation, the swing arm losses of potential energy is converted into road surface friction force institute work, and then inverse goes out friction factor and reads by the pendulum value of portable pendulum tester, the method is simple to operate, but can only measure the road surface single-point friction factor under the certain speed; (2) braking force coefficient calculates corresponding friction factor by the damping force of measuring testing wheel, and main the application and the road surface profile frictional coefficient relatively meets the situation of skidding; (3) cornering ratio, at present most widely used is the scrim system, measure the SFC value on road surface by the testing wheel of one 20 degree drift angle, can reflect the in length and breadth friction force performance of both direction, but because equipment is huge, maneuverability is relatively poor, is mainly used in the friction factor on the on-the-spot road surface of continuous acquisition.
In sum, present surface friction coefficient assay method is higher to equipment, complicated operation, and the reproducibility of measurement result is relatively poor.Because the maneuverability of main equipment is poor, be difficult to adapt to the demand of simulation laboratory test in addition.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of road surface structare layer friction factor indoor measurement device, and this device construction is simple, easy to use, can be by the friction factor on road surface under the release altitude simulation friction speed of movable pulley.
The technical solution of the utility model: a kind of road surface structare layer friction factor indoor test device, it comprises: movable framework 1, slide rail 2, movable pulley 3 and friction disc 4, be arranged with 2 semicircular arc slide rails 2 that connected by coupling shaft 5 on the movable framework 1 in parallel, one end of this slide rail 2 also is provided with draw-in groove 8, be provided with the movable pulley 3 that slides along slide rail 2 at its coupling shaft 5, the inside of this movable pulley 3 is provided with the bearing 6 that freely rotates, and friction disc 4 is evenly distributed on the surface of movable pulley 3.
Further, below, the both sides of the edge, front and back of described movable framework 1 is respectively arranged with 4 corner posts 7, and 2 corner posts of front side are connected with steerable wheel 9 respectively, and 2 corner posts of rear side are connected with ordinary wheel 10 respectively.
Further, described slide rail 2 and movable framework 1 welding, and described slide rail 2 is made of two-layer each two up and down 4 rail sheets.
The beneficial effects of the utility model: this device construction is simple, easy to use, can simulate by the release altitude of movable pulley the friction factor on road surface under the friction speed, and sets up good correlationship in existing surface friction coefficient.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the right view of the utility model structure.
Embodiment
A kind of road surface structare layer friction factor indoor test device, it comprises: movable framework 1, slide rail 2, movable pulley 3 and friction disc 4, be arranged with 2 semicircular arc slide rails 2 that connected by coupling shaft 5 on the movable framework 1 in parallel, one end of this slide rail 2 also is provided with draw-in groove 8, be provided with the movable pulley 3 that slides along slide rail 2 at its coupling shaft 5, the inside of this movable pulley 3 is provided with the bearing 6 that freely rotates, and friction disc 4 is evenly distributed on the surface of movable pulley 3.The below, both sides of the edge, front and back of described movable framework 1 is respectively arranged with 4 corner posts 7, and 2 corner posts of front side are connected with steerable wheel 9 respectively, and 2 corner posts of rear side are connected with ordinary wheel 10 respectively.Described slide rail 2 and movable framework 1 welding, and described slide rail 2 is made of two-layer each two up and down 4 rail sheets.
Claims (3)
1. road surface structare layer friction factor indoor test device, it comprises: movable framework (1), slide rail (2), movable pulley (3) and friction disc (4), it is characterized in that: be arranged with 2 semicircular arc slide rails (2) that connected by coupling shaft (5) on the movable framework (1) in parallel, one end of this slide rail (2) also is provided with draw-in groove (8), be provided with the movable pulley (3) that slides along slide rail (2) at its coupling shaft (5), the inside of this movable pulley (3) is provided with the bearing (6) that freely rotates, and friction disc (4) is evenly distributed on the surface of movable pulley (3).
2. road surface structare layer friction factor indoor test device according to claim 1, it is characterized in that: the below, both sides of the edge, front and back of described movable framework (1) is respectively arranged with 4 corner posts (7), 2 corner posts of front side are connected with steerable wheel (9) respectively, and 2 corner posts of rear side are connected with ordinary wheel (10) respectively.
3. road surface structare layer friction factor indoor test device according to claim 1 and 2 is characterized in that: described slide rail (2) and movable framework (1) welding, and described slide rail (2) is made of two-layer each two up and down 4 rail sheets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320300440 CN203259455U (en) | 2013-05-28 | 2013-05-28 | Indoor test apparatus of friction coefficient of pavement structural layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320300440 CN203259455U (en) | 2013-05-28 | 2013-05-28 | Indoor test apparatus of friction coefficient of pavement structural layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203259455U true CN203259455U (en) | 2013-10-30 |
Family
ID=49472007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320300440 Expired - Fee Related CN203259455U (en) | 2013-05-28 | 2013-05-28 | Indoor test apparatus of friction coefficient of pavement structural layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203259455U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210283973A1 (en) * | 2020-03-12 | 2021-09-16 | Deere & Company | Method and system for estimating surface roughness of ground for an off-road vehicle to control steering |
| US11678599B2 (en) | 2020-03-12 | 2023-06-20 | Deere & Company | Method and system for estimating surface roughness of ground for an off-road vehicle to control steering |
| US11685381B2 (en) | 2020-03-13 | 2023-06-27 | Deere & Company | Method and system for estimating surface roughness of ground for an off-road vehicle to control ground speed |
| US11684005B2 (en) | 2020-03-06 | 2023-06-27 | Deere & Company | Method and system for estimating surface roughness of ground for an off-road vehicle to control an implement |
| US11718304B2 (en) | 2020-03-06 | 2023-08-08 | Deere & Comoanv | Method and system for estimating surface roughness of ground for an off-road vehicle to control an implement |
| US11753016B2 (en) | 2020-03-13 | 2023-09-12 | Deere & Company | Method and system for estimating surface roughness of ground for an off-road vehicle to control ground speed |
-
2013
- 2013-05-28 CN CN 201320300440 patent/CN203259455U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11684005B2 (en) | 2020-03-06 | 2023-06-27 | Deere & Company | Method and system for estimating surface roughness of ground for an off-road vehicle to control an implement |
| US11718304B2 (en) | 2020-03-06 | 2023-08-08 | Deere & Comoanv | Method and system for estimating surface roughness of ground for an off-road vehicle to control an implement |
| US20210283973A1 (en) * | 2020-03-12 | 2021-09-16 | Deere & Company | Method and system for estimating surface roughness of ground for an off-road vehicle to control steering |
| US11667171B2 (en) * | 2020-03-12 | 2023-06-06 | Deere & Company | Method and system for estimating surface roughness of ground for an off-road vehicle to control steering |
| US11678599B2 (en) | 2020-03-12 | 2023-06-20 | Deere & Company | Method and system for estimating surface roughness of ground for an off-road vehicle to control steering |
| US11685381B2 (en) | 2020-03-13 | 2023-06-27 | Deere & Company | Method and system for estimating surface roughness of ground for an off-road vehicle to control ground speed |
| US11753016B2 (en) | 2020-03-13 | 2023-09-12 | Deere & Company | Method and system for estimating surface roughness of ground for an off-road vehicle to control ground speed |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131030 Termination date: 20190528 |