CN108344683A - A kind of surface friction coefficient detection device - Google Patents
A kind of surface friction coefficient detection device Download PDFInfo
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- CN108344683A CN108344683A CN201810168863.8A CN201810168863A CN108344683A CN 108344683 A CN108344683 A CN 108344683A CN 201810168863 A CN201810168863 A CN 201810168863A CN 108344683 A CN108344683 A CN 108344683A
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- admission hole
- friction coefficient
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/02—Measuring coefficient of friction between materials
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Abstract
The present invention relates to a kind of surface friction coefficient detection device, the current detection reliability of effective solution is not high, detects incomplete problem；The technical solution of solution includes babinet, there is cavity in babinet, sliding block is installed in cavity, it is fixed with friction plate below sliding block, sliding block inner hollow and piston is installed, sliding block is provided with fluid hole on right side, the first air admission hole is provided on left side, plunger is installed in first air admission hole, the first air inlet pipe being connected to the first air admission hole is installed outside sliding block, first air admission hole circumference is provided with the second air admission hole that multiple and the first air admission hole communicates, impeller and the spool coaxial with impeller are installed in the first air inlet pipe, it is connected with drawstring between spool and plunger left end, cavity left side is equipped with contactor, contactor is connected with air pump, the second air inlet pipe of gas outlet of air pump is connected to the first air inlet pipe；Testing result of the present invention is true and reliable, detects and completes comprehensively, strong antijamming capability.
Description
Technical field
The present invention relates to field of road detection, specifically a kind of surface friction coefficient detection device.
Background technology
Vehicle on road surface to steadily driving safely, it is necessary to have enough frictional force, and influence the one of automotive friction power
A most important factor is exactly surface friction coefficient, and surface friction coefficient is an extremely important finger for being related to traffic safety
Mark, surface friction coefficient is too small, and vehicle will be caused not have enough adhesive force and driving force, vehicle to be easy hair in road traveling
It is raw to break away or braking distance increases, easily cause danger, especially after the rain road surface have ponding it is wet and slippery in the case of, the friction on road surface
Coefficient smaller is more easy to that accident occurs, and therefore, friction coefficient detection when road surface slippery situation is and its important.Currently, detection road
For face friction coefficient generally using traditional portable pendulum tester method, this method is manual measurement, often to move, dispose adjustment pendulum-type
Instrument, this method labor intensity is big, speed is slow, work efficiency is low, in addition also has right by the various physical quantitys such as detection resistance, temperature, humidity
The calculated value of surface friction coefficient is obtained by relation curve and theoretical calculation afterwards, however, surface friction coefficient with it is various
The relation curve of physical quantity is often extremely complex and is mostly to have ignored the theory relation after its dependent variable, correctness and accuracy
All it is the problem of being worthy of consideration, moreover, the friction coefficient on road surface is often influenced by various pavement states and environment, by several
Physical quantity carrys out the result that theoretical calculation obtains and most probably differs greatly with actual conditions；In addition, be sample detection above, detection
Not comprehensively.
Therefore, a kind of detection reliability height is designed, it is a urgent need to resolve to detect comprehensive wet-skid road surface detection device
Problem.
Invention content
For the above situation, to overcome the defect of the prior art, the present invention provides a kind of detections of surface friction coefficient to fill
It sets, the current detection reliability of effective solution is not high, detects incomplete problem.
Its technical solution solved is a kind of surface friction coefficient detection device, including babinet, is had along right and left in babinet
To the cavity opened up, the sliding block that can be horizontally slipped is installed in cavity, be fixedly connected with below sliding block it is being placed in outside babinet and with
The lower surface of the friction plate of sliding block synchronous slide, friction plate is horizontal, and compression spring is connected between sliding block right side and cavity right side；
Sliding block inner hollow is equipped with the piston that can be horizontally slipped in it in sliding block, is provided on sliding block right side and is communicated with inside it
Fluid hole, first pressure valve is equipped at fluid hole, is provided with the first air admission hole and first row stomata on sliding block left side, first into
The plunger for sliding and being bonded with it is installed in stomata, tension spring is connected between plunger left end and sliding block left end, peace is fixed in cavity
Equipped with the sealing-plug coordinated with first row stomata, sliding block moves to left rear sealing-plug and can close first row stomata, is equipped with outside sliding block
The first air inlet pipe being connected to the first air admission hole, the first air admission hole circumference are provided with multiple second air admission holes, the second air admission hole one
Port is located on sliding block left side and is communicated with the first air inlet pipe, another port be located on the first air admission hole inner wall and first into
Stomata communicates；The spool for being equipped with impeller in first air inlet pipe and being coaxially fixedly mounted with impeller, spool and plunger are left
It is connected with drawstring between end, relief hole is provided in the first air inlet pipe on the right side of impeller；Cavity left side is equipped with contactor, electricity
Way switch is connected with air pump, and air pump starts when contactor is depressed to the left, and air pump stops when contactor pops up to the right, air pump
The second air inlet pipe of gas outlet is connected to the first air inlet pipe.
Testing result of the present invention is true and reliable, detects and completes comprehensively, strong antijamming capability.
Description of the drawings
Fig. 1 is front sectional view of the present invention.
Fig. 2 is part A enlarged drawing in Fig. 1.
Fig. 3 is the front sectional view that sliding block moves to left rear cabinet body position.
Fig. 4 is part B enlarged drawing in Fig. 3.
Fig. 5 is the left view of impeller and spool.
Fig. 6 is the front sectional view of waste water collection device.
Fig. 7 is the right side view of babinet.
Specific implementation mode
Further description is made to the specific implementation mode of the present invention below in conjunction with attached drawing.
It is provided by Fig. 1 to Fig. 7, the present invention includes babinet 1, there is the cavity 2 opened up in left-right direction in babinet 1, in cavity 2
The sliding block 3 that can be horizontally slipped is installed, 3 lower section of sliding block, which is fixedly connected with, to be placed in outside babinet 1 and with the friction of 3 synchronous slide of sliding block
The lower surface of plate 4, friction plate 4 is horizontal, and 3 right side of sliding block and cavity are connected with compression spring 5 between 2 right side；In 3 inside of sliding block
Sky is equipped with the piston 6 that can be horizontally slipped in it in sliding block 3, is provided on 3 right side of sliding block and the fluid hole that is communicated inside it
7, first pressure valve 8 is equipped at fluid hole 7, is provided with the first air admission hole 9 and first row stomata 10 on 3 left side of sliding block, first into
The plunger 11 for sliding and being bonded with it is installed in stomata 9, tension spring 12, cavity 2 are connected between 3 left end of 11 left end of plunger and sliding block
It is inside installed with the sealing-plug 13 coordinated with first row stomata 10, sliding block 3 moves to left rear sealing-plug 13 can be by first row stomata 10
Closing, sliding block 3 are equipped with the first air inlet pipe 14 being connected to the first air admission hole 9 outside, and 9 circumference of the first air admission hole is provided with multiple second
Air admission hole 15,15 a port of the second air admission hole are located on 3 left side of sliding block and are communicated with the first air inlet pipe 14, another port
It is communicated and close to the left end of the first air admission hole 9 with the first air admission hole 9 on 9 inner wall of the first air admission hole；In first air inlet pipe 14
Impeller 16 and the spool being coaxially fixedly mounted with impeller 16 17 are installed, are connected between 11 left end of spool 17 and plunger
Drawstring 18 is provided with pressure relief vent 19 in first air inlet pipe 14 on the right side of impeller 16；2 left side of cavity is equipped with contactor 20, electricity
Way switch 20 is connected with air pump 21, and air pump 21 starts when contactor 20 is depressed to the left, air pump when contactor 20 pops up to the right
21 stop, and the second air inlet pipe of gas outlet 22 of air pump 21 is connected to the first air inlet pipe 14.
To collect surface gathered water, equipped with waste water collection device, waste water collection device includes along preceding on 1 right side of babinet
The horizontal positioned roller 23 of rear direction, the multiple axial grooves 24 of circumference uniform distribution on 23 side wall of roller, installation in each groove 24
There are one sponge roller 25,25 outside of sponge roller is exposed outside groove 24, is collected correspondingly with groove 24 equipped with multiple in roller 23
Hydroecium 26,24 bottom of each groove are equipped with and correspond to the osculum 27 that collecting chamber 26 communicates, and each collecting chamber 26 is respectively connected with
Water return pipeline 28 is equipped with water pump 29 on water return pipeline 28, and 23 top of roller is equipped with the pressing plate 30 not rotate with roller 23, pressure
Height of 30 height of plate less than 25 outside of sponge roller.
For convenience of the position on the unqualified road surface of determination, the present invention is equipped with reading plotter 31, and reading plotter 31 can be read and remember
The numerical value of automobile kilometer is recorded, control switch 32, reading plotter 31 and control 32 phase of switch are installed on the left side of cavity 2
Even.
To be shaken when sliding block 3 being avoided to horizontally slip in cavity 2, the inner wall sliding of the outer wall and cavity 2 of the sliding block 3
Fitting.
1 bottom of babinet is provided with the straight slot 33 communicated with cavity 2 in left-right direction, and sliding block 3 is through a link block 34
It is fixedly connected with friction plate 4, link block 34 is placed in straight slot 33 and can horizontally slip.
It is provided with second row stomata 35 on the side wall of the cavity 2 in 3 left side of sliding block.
It is to adjust friction plate 4 to the pressure on ground, 1 top of babinet is equipped with montant 36, detachable on montant 36
It is installed with clump weight 37.
The pressure relief vent 1919 is connected with second pressure valve 38, and the unlatching threshold values of second pressure valve 38 is more than first pressure
The unlatching threshold values of valve 8.
Not influence moving left and right for sliding block 3, second air inlet pipe 22 is hose.
Horizontal compression bar 39 is installed on 3 left side of sliding block, sliding block 3 moves to left rear compression bar 38 and can contact and depress electricity
Way switch 20 and control switch 32.
When specifically used, 1 left end of babinet is mounted in tractor rear the present invention, and friction plate 4 is pressed on road surface to be checked, leads
Drawing vehicle can pull the present apparatus to advance on road surface, and tractor is loaded with sprinkler tank, and sprinkler tank can sprinkle water to the road surface in 1 left side of babinet
The wet and slippery state of simulated roadway, the water outlet of water return pipeline 28 are connected with sprinkler tank, can also be equipped with sprinkling truck before tractor certainly
Road pavement is sprinkled water, and when being equipped with sprinkling truck, tractor is loaded with the sewage collecting box being connected with water return pipeline 28 and is used for collecting
Waste water；6 right side of piston in sliding block 3 is equipped with liquid vehicle, and fluid hole 7 is connected with outer positioned at babinet 1 and is located at waste water through hose
Nozzle on the right side of collection device.
When detecting road surface, starts tractor and water pump 29, record the numerical value of tractor mileometer at this time, then to road surface
The watering wet and slippery state of simulated roadway, can be by the watering amount of adjusting road pavement, to simulate the road surface slippery situation feelings under different water accumulating volumes
Condition；Subsequent start-up tractor starts drag the present apparatus and walks on the road surface to be checked after watering, and friction plate 4 is pressed on wet-skid road surface
On, babinet 1 is moved downward with tractor, and under the action of road surface friction force, friction plate 4 is static with respect to road surface when initial, that is, rubs
4 opposite case 1 of wiping board moves right, and friction plate 4 moves right compression press spring by link block 34 with 3 opposite case 1 of movable slider
5, with the compression of compression spring 5, compression spring 5 gradually increases the elastic force of sliding block 3, until compression spring 5 is equal to road surface pair to the elastic force of sliding block 3
When the frictional force of friction plate 4, friction plate 4 and the beginning of sliding block 3 are moved downward with babinet 1, and the state after moving equilibrium is 3 He of sliding block
4 opposite case 1 of friction plate is static to be moved downward together.
The roller 23 of the waste water collection device on 1 right side of babinet rolls under the pulling of babinet 1 on road surface, 23 side wall of roller
On multiple sponge rollers 25 alternately contacted with road surface, ponding of the sponge roller 25 contacted with road surface by sprinkler pipe spread on road surface
It absorbs, as roller 23 rotates, the sponge roller 25 for being drawn through water turns to the lower section of pressing plate 30, and 30 compressed sponge roller 25 of pressing plate is by sponge
Interior water squeezes out, and the water of extrusion enters the collecting chamber 26 of lower section, the water in collecting chamber 26 by the osculum 27 of 24 bottom of groove
By water pump 29 on the one hand surface gathered water is prevented by 28 blowback sprinkler tank of water return pipeline or sewage collecting box after filtering, on the one hand
Recycle the utilization rate for improving water.
If the standard friction coefficient on road surface, friction plate 4 and sliding block 3 can stablize with babinet 1 move downward without
Significantly double swerve in babinet 1；It is constant in the surface pressure that satisfies the need of friction plate 4 when surface friction coefficient is less than minimum standard
In the case of, road surface decreases below minimum standard value to the frictional force of friction plate 4,3 force unbalance of friction plate 4 and sliding block,
Under the action of 5 elastic force of compression spring, sliding block 3 pushes opposite case 1 to move downward by compression spring 5, and sealing-plug 13 is inserted into first row stomata 10
Middle to close first row stomata 10, sliding block 3 moves downward, and compression bar 39 contacts and depress contactor 20 and control switch 32, control
System switch 32 controls the reading of reading apparatus 31 and records the numerical value of the mileometer of tractor at this time, and contactor 20 is by air pump 21
Power source connect, air pump 21 start, inflated into the first air inlet pipe 14 by the second air inlet pipe 22, due to the first air admission hole 9 with
And second the right hole mouth of air admission hole 15 closed by plunger 11, so the air in the first air inlet pipe 14 cannot enter in sliding block 3, and
It is to wash second pressure valve 38 open to be discharged from pressure relief vent 19, is discharged outside babinet 1 through second row stomata 35；The air that gas 21 is pumped into
Air-flow is formed in the first air inlet pipe 14, air-flow blows the also rotation of impeller 16, and the rotation of impeller 16 drives spool 17 to rotate, spiral
Drawstring 18 is wrapped on spool 17 that plunger 11 is pulled to slide to the left in the first air admission hole 9 by axis 17, after a period of time,
Impeller 16 rotates multi-turn plunger 11 and is pulled to leftmost position, and plunger 11 cannot slide again, and impeller 16 and spool 17 stop turning
Dynamic, 11 right end of plunger is crossed 15 aperture of the second air admission hole on 9 inner wall of the first air admission hole and is located on the left of aperture to the left at this time, and second
Air admission hole 15 be connected into the first air admission hole 9 can supplied gas enter the channel in sliding block 3 from the first air inlet pipe 14, air pump 21 is pumped into
Air in first air inlet pipe 14 is entered by the second air admission hole 15 and the first air admission hole 9 in sliding block 3, gas in the first air inlet pipe 14
Pressure reduces second pressure valve 38 and closes, and the left side inflation of 3 internal piston 6 of sliding block makes the air pressure in 6 left side of piston increase, and piston 6 is right
The liquid vehicle on right side applies pressure, sliding under the action of 6 pressure of piston to make the first pressure valve 8 on outlet tube open
Liquid vehicle in block 3 is sprayed onto on road surface through outlet tube and nozzle by pavement markers, since nozzle is located at 23 right side of roller, so
The road surface position ponding of spraying is absorbed by sponge roller 25, so as to ensure that paint vehicle can be sprayed effectively and be adhered to road surface
On；When air pump 21 is pumped into gas to 6 left side of piston, the air pressure in 6 left side of piston can gradually rise to again more than second pressure
When the unlatching threshold values of valve 38, second pressure valve 38 is opened, and the gas in 6 left side of piston passes through 35 row of pressure relief vent 19 and second row stomata
Go out, prevents the air pressure in 6 left side of piston from continuing to increase, make the stable gas pressure in 6 left side of piston in the opening valve of second pressure valve 38
Value keeps pressure stability of the piston 6 to right side paint vehicle, to ensure the stable and uniform of spraying.
After the friction coefficient on road surface reaches standard value again, the frictional force suffered by friction plate 4 to the right increases to mark again
Quasi- value, friction plate 4 move right to unclamp contactor 20 and control switch 32 with 3 compression press spring 5 of movable slider, and air pump 21 stops
It only works and no longer blasts air to 6 left side of piston, the sealing-plug 13 while moving right of sliding block 3 is pulled out from first row stomata 10
Go out, first row stomata 10 is opened, and the pressure-air in 6 left side of piston is discharged by first row stomata 10 and second row stomata 35, living
There is no high pressure, piston 6 also no longer squeezes the paint vehicle on the right side of it in plug 6 left side, and first pressure valve 8, which is closed, stops paint vehicle spraying.
Under the action of tension spring 12, plunger 11 moves right homing while spool 17 and impeller 16 being pulled to invert, and plunger 11 is by the
One air admission hole 9 and the second air admission hole 15 are closed again.
In 4 sliding process of friction plate, if thering is stone or road surface to have fluctuating that friction plate 4 is caused to takeoff slightly on road surface, again
Or frictional force road surface not up to standard is very short does not influence normally travel, at this time the frictional force of friction plate 4 can of short duration reduction and make sliding block 3 to
Left therefore compression bar 39 of short duration pressure contactor 20 and can control switch 32 there are one of short duration preshoot, and air pump 21 starts to the
Inflation impeller 16 rotates in one air inlet pipe 14, still, since rotation multi-turn back-plunger 11 can just be pulled to the leftmost side, the second air inlet
Hole 15 can just be connected with the first air admission hole 9, and within the of short duration startup time of air pump 21, piston 6 has little time to be pulled to the leftmost side, gas
21 air that is pumped into of pump cannot enter in sliding block 3, thus the present apparatus will not road pavement carry out spraying label；It is rotated by impeller 16
Gas could enter in sliding block 3 after multi-turn, make 6 deferred action of piston, to exclude the sundries such as Uneven road or stone to detection
As a result influence can adjust the movement velocity of take-up speed and plunger 11 to adjust delay by adjusting the diameter of axle of spool 17
Duration, to adjust the accuracy of detection of the present invention, the diameter of axle is bigger, and the movement of plunger 11 is faster, and delay is shorter, and accuracy of detection is higher,
But anti-interference ability can accordingly decline, and the diameter of axle is smaller, and the movement of plunger 11 is slower, and delay is longer, and anti-interference ability is stronger, but detect
Precision can be reduced accordingly, can balance both sides relation according to different testing requirements when use；Certainly, if desired higher accuracy of detection
When, the sundries such as the stone on road surface to be checked can be first cleaned with sweeper, to reduce interference.
Above procedure sliding block 3 will not be pressed onto second row stomata 35 in stroke and close second row stomata 35.
After tractor has travelled the section of this detection, the power source of air pump 21 is stopped and cut off, this inspection is then read
The numerical value that reading plotter 31 records during survey, each numerical value correspond to one section of unqualified section of friction coefficient, each numerical value
Subtract tractor it is not actuated when the numerical value of tractor mileometer that records, as each unqualified section of friction coefficient is at a distance of detecting just
The distance of initial point after the approximate location for calculating each unqualified section, arranges working drawing review personnel to go to the position, finds spraying
The specific location of label carries out working drawing review to label road surface.
The present invention can by adjusting tractor travel speed or change the diameter of axle of spool 17 and adjust the precision of detection,
Traction vehicle speed is slower, and the distance that tractor travels in delay duration is shorter, and the reaction distance for spraying label is shorter, accuracy of detection
Higher or spool 17 the diameter of axle is bigger, and delay duration is shorter, and the reaction distance of spraying is shorter, and accuracy of detection is higher.The present invention
It can also be by installing clump weight 37 additional on babinet 1 to be applicable in the pavement detection of different coefficients of friction standard.
The present invention has the advantages that notable：First, the present invention by road surface sprinkle water Actual Simulation road surface slippery situation state, again
The friction coefficient size on road surface is directly detected with frictional force between road surface by friction plate 4, is passed through any such as temperature, wet
The conversion of the intermediate variables such as degree, resistance calculates and theoretical reckoning, and testing result is road surface reality after all influence factor comprehensive functions
The direct measurement result of border friction coefficient rather than theoretical calculation as a result, keeping testing result more acurrate true, reliability is high；Its
Secondary, the present invention is complete detection, and tractor has travelled the whole process in section to be checked, that is, completes the detection in overall length section, rather than sampling
Detection, testing result are comprehensively complete；In addition, the unqualified road surface of had an impact driving can all be carried out spraying mark by the present invention
Note, the numerical value recorded by reading plotter 31 can obtain the quantity and distributing position in all unqualified sections, then pass through spraying
Label accurately determines the exact position in unqualified section to arrange personnel to repair, moreover, passing through reel and plunger
The cooperation of 11 movements realizes that the air flue delayed start-up into sliding block 3 to realize that the delay of piston 6 moves to right, sprays to be delayed,
Filtering out sundries or fluctuating on road surface causes the malfunction of air pump 21 to lead to marked erroneous, improves the anti-interference ability of the present invention.
To sum up, testing result of the present invention is true and reliable, detects complete, strong antijamming capability comprehensively.
Claims (10)
1. a kind of surface friction coefficient detection device, including babinet（1）, which is characterized in that babinet（1）Inside have and opens in left-right direction
If cavity（2）, cavity（2）The sliding block that can be horizontally slipped inside is installed（3）, sliding block（3）Lower section, which is fixedly connected with, is placed in babinet
（1）It is outer and with sliding block（3）The friction plate of synchronous slide（4）, friction plate（4）Lower surface it is horizontal, sliding block（3）Right side and sky
Chamber（2）Compression spring is connected between right side（5）；Sliding block（3）Inner hollow, sliding block（3）Inside being equipped with can horizontally slip in it
Piston（6）, sliding block（3）The fluid hole for being provided on right side and being communicated inside it（7）, fluid hole（7）Place is equipped with first pressure
Valve（8）, sliding block（3）The first air admission hole is provided on left side（9）With first row stomata（10）, the first air admission hole（9）Inside it is equipped with
The plunger being bonded is slided with it（11）, plunger（11）Left end and sliding block（3）Tension spring is connected between left end（12）, cavity（2）It is interior
It is installed with and first row stomata（10）The sealing-plug of cooperation（13）, sliding block（3）Move to left rear sealing-plug（13）It can be by first row
Stomata（10）Closing, sliding block（3）It is equipped with and the first air admission hole outside（9）First air inlet pipe of connection（14）, the first air admission hole（9）
Circumference is provided with multiple second air admission holes（15）, the second air admission hole（15）A port is located at sliding block（3）On left side and with first
Air inlet pipe（14）It communicates, another port is located at the first air admission hole（9）On inner wall and the first air admission hole（9）It communicates；First air inlet
Pipe（14）Impeller is inside installed（16）And and impeller（16）The spool being coaxially fixedly mounted（17）, spool（17）And plunger
（11）Drawstring is connected between left end（18）, impeller（16）First air inlet pipe on right side（14）On be provided with pressure relief vent（19）；Cavity
（2）Left side is equipped with contactor（20）, contactor（20）It is connected with air pump（21）, contactor（20）When depressing to the left
Air pump（21）Start, contactor（20）Air pump when popping up to the right（21）Stop, air pump（21）The second air inlet pipe of gas outlet
（22）With the first air inlet pipe（14）Connection.
2. a kind of surface friction coefficient detection device according to claim 1, which is characterized in that the babinet（1）It is right
Equipped with waste water collection device, waste water collection device includes horizontal positioned along the longitudinal direction roller for side（23）, roller（23）Side
The multiple axial grooves of circumference uniform distribution on wall（24）, each groove（24）There are one sponge rollers for interior installation（25）, sponge roller（25）
Expose groove in outside（24）Outside, roller（23）It is interior to be equipped with multiple and groove（24）One-to-one collecting chamber（26）, each groove
（24）Bottom is equipped with and corresponds to collecting chamber（26）The osculum communicated（27）, each collecting chamber（26）It is respectively connected with water return pipeline
（28）, water return pipeline（28）On water pump is installed（29）, roller（23）Top is equipped with not with roller（23）The pressing plate of rotation
（30）, pressing plate（30）Height is less than sponge roller（25）The height in outside.
3. surface friction coefficient detection device according to claim 1, which is characterized in that the present invention is equipped with reading plotter
（31）, reading plotter（31）It can be read and record the numerical value of automobile kilometer, cavity（2）Left side on be equipped with control switch
（32）, reading plotter（31）It is switched with control（32）It is connected.
4. a kind of surface friction coefficient detection device according to claim 1, which is characterized in that the sliding block（3）'s
Outer wall and cavity（2）Inner wall sliding fitting.
5. a kind of surface friction coefficient detection device according to claim 1, which is characterized in that the babinet（1）Bottom
Portion is provided in left-right direction and cavity（2）The straight slot communicated（33）, sliding block（3）Through a link block（34）And friction plate（4）Gu
Fixed connection, link block（34）It is placed in straight slot（33）It is interior and can horizontally slip.
6. a kind of surface friction coefficient detection device according to claim 1, which is characterized in that the sliding block（3）It is left
The cavity of side（2）Side wall on be provided with second row stomata（35）.
7. a kind of surface friction coefficient detection device according to claim 1, which is characterized in that the babinet（1）On
Side is equipped with montant（36）, montant（36）On be detachably installed with clump weight（37）.
8. a kind of surface friction coefficient detection device according to claim 1, which is characterized in that the relief hole（19）
It is connected with second pressure valve（38）, second pressure valve（38）Unlatching threshold values be more than first pressure valve（8）Unlatching threshold values.
9. a kind of surface friction coefficient detection device according to claim 1, which is characterized in that second air inlet pipe
（22）For hose.
10. a kind of surface friction coefficient detection device according to claim 1, which is characterized in that the sliding block（3）It is left
Horizontal compression bar is installed on end face（39）, sliding block（3）Move to left rear compression bar（38）It can contact and depress contactor（20）And control
System switch（32）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810168863.8A CN108344683B (en) | 2018-02-28 | 2018-02-28 | Road surface friction coefficient detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810168863.8A CN108344683B (en) | 2018-02-28 | 2018-02-28 | Road surface friction coefficient detection device |
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| CN108344683A true CN108344683A (en) | 2018-07-31 |
| CN108344683B CN108344683B (en) | 2020-04-24 |
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| CN201810168863.8A Active CN108344683B (en) | 2018-02-28 | 2018-02-28 | Road surface friction coefficient detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342313A (en) * | 2018-09-27 | 2019-02-15 | 中路高科交通检测检验认证有限公司 | A kind of metering method of antiskid performance detection apparatus |
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