CN209485945U - A kind of experimental rig of study of tire and practical pavement friction characteristic - Google Patents
A kind of experimental rig of study of tire and practical pavement friction characteristic Download PDFInfo
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- CN209485945U CN209485945U CN201920154330.4U CN201920154330U CN209485945U CN 209485945 U CN209485945 U CN 209485945U CN 201920154330 U CN201920154330 U CN 201920154330U CN 209485945 U CN209485945 U CN 209485945U
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- 238000012360 testing method Methods 0.000 claims abstract description 104
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Abstract
The experimental rig of a kind of study of tire disclosed by the utility model and practical pavement friction characteristic, belongs to detection device technology field.Pass through the mechanical structures such as load sleeve, load sleeve pedestal, pivoted arm and rack, it preferably simulates with the actual condition for carrying tire on different road surfaces when driving, it can be used to test the coefficient of friction between tire and road surface, abrasion condition between study of tire and road surface, can be as desired by the crush of load screw rod adjustment loading spring, and then adjust test load；Tire running speed is adjusted by transmission system simultaneously；It can also be by adjusting the connection relationship between testing wheel and auxiliary wheel, to between tire and road surface slippage rate or slip rate be changed, simulate a variety of driving conditions of the tire on road surface, go out the data such as load, revolving speed and torque by sensor real-time detection, and then test tire is calculated by formula and tests the coefficient of friction between road surface.
Description
Technical field
The utility model belongs to detection device technology field, and in particular to a kind of study of tire and practical pavement friction characteristic
Experimental rig.
Background technique
Current various motor vehicle numbers are continuously increased, and the acting frequency of car load road pavement is also increasing.Vehicle carries
The gravity of lotus can make surface deformation and form track, in the starting of vehicle, braking, speed change, turn to and overcome various resistances
Meeting road pavement applies horizontal shear force when advance, this shearing force can make road surface generate the failures by shear such as horizontal translocation, above-mentioned
Under complicated alternate load effect, the service life on road surface is also substantially reduced.Be embodied in, on the one hand with surface of tyre and
The abrasion darkening meeting on road surface is so that tire and the reduction of the coefficient of friction on road surface, increase braking distance, while tire is in road surface row
Antiskid performance when sailing can also decline；The various lesions of another aspect ground surface material itself, including cracking, the meeting such as deform, fall off
Seriously affect riding experience and traffic safety.It can be seen that how to study band by research technique carries vehicle tyre in difference
The active force rule between opposite sliding and tire-road, the abrasion feelings of ground surface material on ground surface material when driving between the two
Condition and tire and ground surface material wear the existence of formed particulate matter, assess the service life and its mill of tire and road surface
To the influence of environment after damage, it has also become the major issue that highway communication field is faced.
Chinese patent announces CN 101532934A, discloses a kind of " main drive wheel type pavement materials accelerated loading survey
The ground surface material of test is fixed on the cylinder outer surface of a rotation, Surface of Trial Pavement material by method for testing and device ", the device
It moves in a circle in test, since centrifugal force has destruction to Surface of Trial Pavement material, pilot cylinder can not do high speed and turn
It is dynamic, slow-speed test can only be carried out, thus conclusion and actual difference are relatively large.In addition, its technical solution is used to test
The method of tire braking carries out Slip test, and there are the following problems: (1) its friction plate can generate greatly brake during the work time
The heat of amount, temperature raising cause test that can not continue to carry out；(2) braking process consumes a large amount of energy, increases plant capacity
Add；(3) in brake, the slip rate of wheel is more difficult to control, and it is difficult that this will lead to data analysis.
To sum up, the simulation conclusion of existing simulation test device generally has bigger difference with actual conditions, cannot be accurately
Actual conditions are reacted, are not able to satisfy the needs of friction process research.
Summary of the invention
To solve the above-mentioned problems, the purpose of this utility model is to provide a kind of study of tire and practical pavement friction are special
Property experimental rig, carry actual condition of the tire on different road surfaces when driving by simulating band, come test tire and road surface it
Between coefficient of friction, the abrasion of study of tire, road surface, apparatus structure design is reasonable, low in cost, can accurate response it is practical
Situation.
The utility model is to be achieved through the following technical solutions:
The utility model discloses the experimental rigs of a kind of study of tire and practical pavement friction characteristic, including loading sleeve
Cylinder, load sleeve pedestal, pivoted arm and rack；Load sleeve pedestal and rack are fixed on ground, and load spiral shell is fixed in rack
Female and motor, motor are connect by transmission system with center pipe axle, and center pipe axle is connect with load sleeve, and load sleeve can
It is rotatably disposed on load sleeve pedestal, is equipped with load screw rod inside center pipe axle and load sleeve；Load screw rod one end
It is spirally connected with load nut cooperation, the other end is connected with loading spring seat, and loading spring seat is movably set in inside load sleeve, adds
It carries spring base and is connected with loading spring, the loading spring other end is withstood on upper spacer fixed inside load sleeve；
Load sleeve is fixedly connected with pivoted arm, and transmission shaft is equipped with inside pivoted arm, and transmission shaft is sensed equipped with rotational speed and torque
Device, transmission shaft one end are connect with testing wheel, the input axis connection of the other end and power transmission box, and the transmission ratio of power transmission box is
Negative value；The output shaft and auxiliary wheel axis connection of power transmission box assist being fixedly connected with auxiliary wheel on wheel shaft；Testing wheel and auxiliary
The radius of wheel is equal, is both placed on the test loop path laid on the ground of bottom of the frame；Load cell is disposed on pivoted arm,
Torque and speed sensors and load cell are connected by signal transmssion line with external instrument；Pivoted arm is equipped with clump weight.
Preferably, load screw rod is equipped with locking nut.
Preferably, load sleeve and pivoted arm wear setting, are connected by several driving bearing pins.
Preferably, load sleeve pedestal is hollow cylinder structure, and load sleeve is set on load sleeve pedestal, loading sleeve
Be equipped with support spring in cylinder pedestal, support spring one end withstands on ground, the other end withstand on it is fixed inside load sleeve under every
On plate.
It is further preferred that thrust bearing is equipped between load screw rod and loading spring seat, between support spring and ground
Equipped with thrust bearing, if being equipped with the dry bearing to supporting drive shaft and auxiliary wheel shaft in pivoted arm.
Preferably, transmission system includes speed reducer, and speed reducer one end is connect with motor, and the other end passes through belt and fixation
Driven pulley connection in center pipe axle.
Preferably, center pipe axle is by driving shaft coupling to connect with load sleeve.
Preferably, load cell includes R1, R2, R3 and R4 totally 4 resistance strain plates, is pasted according to full-bridge connection
On pivoted arm: R1 and R2 is located on the upside of pivoted arm, and the line of centres of R1 and R2 are parallel with pivoted arm axis；R3 and R4 is located on the downside of pivoted arm,
The line of centres of R3 and R4 is parallel with pivoted arm axis.
Preferably, test loop path has been adjacently positioned auxiliary circuit, and auxiliary circuit is concentric from test loop path and material is different.
Preferably, rack is equipped with seal closure, and seal closure and ground form closed space, indoor ring are equipped in seal closure
Border detector.
Compared with prior art, the utility model has technical effect beneficial below:
The experimental rig of a kind of study of tire disclosed by the utility model and practical pavement friction characteristic, is more accurately simulated
It, can be as desired by the pressure of load screw rod adjustment loading spring with actual condition of the tire on different road surfaces when driving is carried
Tight amount, and then adjust load；Tire running speed is adjusted by motor control system simultaneously；Can also by adjusting testing wheel with
Connection relationship between auxiliary wheel, between tire and road surface slippage rate or slip rate be changed, simulate tire on road surface
On a variety of driving conditions, go out to load by sensor real-time detection, the data such as revolving speed and torque, and then calculate by formula
Tire is tested out and tests the coefficient of friction between road surface.Relative motion between tire and road surface is real by tire rotary motion
Existing, test ground surface material is fixed, and eliminating rotation makes Surface of Trial Pavement material bear the influence of other additional loads such as centrifugal force,
The slippery conditions of tire on road surface when driving can more accurately be simulated；By the way that clump weight is arranged, guarantee to assist when device work
Wheel has enough load, does not generate skidding；By Design of Mechanical Structure, is realized and surveyed using the power transmission box that transmission ratio is negative value
Examination wheel is operated according to required slippage rate, without increasing brake, is eliminated fever phenomenon due to braking, is reduced energy consumption, extend
Transmission system service life, does not depend on automatic control system.Tire is adjusted by loading spring using load screw rod to be born
The mode of load, it is convenient and efficient, labor intensity can be reduced and shorten regulating time.
Further, after load needed for load screw rod adjusts device, load screw rod is locked by locking nut
Tightly, anti-locking apparatus rotation makes load change, and influences test result.
Further, pivoted arm and load sleeve wear setting, can be improved the stability of device to test；Pass through driving bearing pin
The support spring collective effect of connection and the setting of load sleeve bottom end, may make pivoted arm to reduce in the horizontal direction because of test loop path
Influence of the injustice to test data reduces shaking and the tire noise of pivoted arm, improves the stability of test data.
Further, by the way that support spring is arranged in load sleeve pedestal, when test loop path out-of-flatness, testing wheel, auxiliary
Tire pressure is helped to change, when height change or horizontal tilt phenomenon occurs in pivoted arm, at this time in loading spring, support spring
Under effect, load sleeve can float up and down in load sleeve support, and pivoted arm can generate swing by a small margin, with this come on reducing
Its influence to test result of factor is stated, makes device that can also obtain accurate data in the case where high-speed motion.
Further, by the way that appropriate number of bearing is arranged in each shafting appropriate position of device, stablize shafting
Rotation, improves the accuracy of test data.
Further, motor is connect by speed reducer and belt wheel transmission mechanism with center pipe axle, and structure is simple, can be light
Easily the revolving speed of pivoted arm is adjusted.
Further, center pipe axle makes more to put down during torque transfer by driving shaft coupling to connect with load sleeve
Surely, structure process is simple.
Further, 4 resistance strain plates are pasted on pivoted arm according to full-bridge connection, the output of this electric bridge only with survey
The load for trying wheel is directly proportional, keeps the data measured accurate.Full-bridge patch can significantly improve measurement sensitivity, and make input and it is defeated
It is in a linear relationship out.Using the variation of full-bridge detection foil gauge, also have the electric current passed through extremely low, foil gauge self-heating is low
Advantage.
Further, test loop path arranged concentric has the auxiliary circuit of unlike material, can replace according to actual needs not
The circuit of same material realizes the research of testing wheel frictional behavior between tire and road surface under different slippage rates and slip rate, enriches
Test content, but also test device function is more various.
Further, rack is equipped with the seal closure that enclosure space is formed with ground, is equipped with indoor environment in seal closure and examines
Instrument is surveyed, can be to avoid the dust polluting environment that generates when test, while it can be with the matter of air in seal closure during monitoring and test
Measure situation of change, and then analyze road wear after generated particulate matter state, thus the characteristic of road pavement material or tire into
Row more accurately assessment.
Detailed description of the invention
Fig. 1 is the overall structure schematic elevation view of the embodiments of the present invention 1；
Fig. 2 is the A-A direction view of the embodiments of the present invention 1；
Fig. 3 is the overall structure schematic elevation view of the embodiments of the present invention 2；
Fig. 4 is the B-B direction view of the embodiments of the present invention 2；
Fig. 5 is that the foil gauge full-bridge type that the load cell of the utility model uses arranges circuit diagram.
In figure: 1 is motor, and 2 be speed reducer, and 3 be belt, and 4 be driven pulley, pipe axis centered on 5, and 6 be load spiral shell
Mother, 7 be load screw rod, and 8 be locking nut, and 9 be driving shaft coupling, and 10 be loading spring seat, and 11 be loading spring, and 12 be load
Sleeve, 13 be power transmission box, and 14 be clump weight, and 15 be auxiliary wheel, and 16 be auxiliary wheel shaft, and 17 be test loop path, and 18 be auxiliary
Circuit, 19 be auxiliary wheeling support, and 20 be load sleeve support, and 21 be support spring, and 22 be torque and speed sensors, and 23 be transmission
Axis, 24 be pivoted arm, and 25 be test wheeling support, and 26 be test wheel shaft, and 27 be testing wheel, and 28 be load cell, and 29 be rack, 30
It is universal joint for Indoor Environment Detection instrument, 31,32 be driving bearing pin, and 33 be seal closure.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and embodiments, doing is to the utility model
It explains rather than limits:
Embodiment 1
As shown in Figure 1, Figure 2, testing wheel 27 is equal with the radius of auxiliary wheel 15, the arm length L of testing wheel 271Greater than auxiliary wheel
The length L of 15 pivoted arms2, the transmission ratio of power transmission box 13 is negative 1, that is, the revolving speed size of 13 two shaft ends of power transmission box
It is equal, contrary.
Motor 1 is furnished with speed regulation device, and motor 1 is directly connected to speed reducer 2, and speed reducer 2 is fixedly installed in rack 29
Top, the output shaft of speed reducer 2 is connected by belt 3 with driven pulley 4, driven pulley 4 and the fixation of center pipe axle 5
Connection；Center pipe axle 5 is axial be it is hollow, be internally provided with load screw rod 7 in center pipe axle 5, load the centrally disposed pipe of screw rod 7
It on the axis of axis 5, is not contacted with the inner wall of center pipe axle 5, there is screw thread in load 7 upper end of screw rod, matches with the screw thread on load screw rod 7
The load nut 6 of set is fixedly mounted in the mounting hole at 29 top of rack, and the upper end of load nut 6 is provided with locking nut 8,
The lower end of load screw rod 7 is connect by thrust bearing with loading spring seat 10, and load is provided with below loading spring seat 10
Spring 11, the upper end of loading spring 11 and loading spring seat 10 compress.
The upper end of center pipe axle 5 is supported in rack 29 with bearing, and the lower end of center pipe axle 5 is fixedly installed with driving shaft coupling
Device 9 drives the mode of lower end prismatic pair of shaft coupling 9 to be connected with load sleeve 12, be provided in load sleeve 12 every
Plate, and the lower end of loading spring 11 is pressed on upper spacer；It is additionally provided with lower clapboard in load sleeve 12, under lower clapboard
Face is provided with the support spring 21 compressed with lower clapboard, and the lower end of support spring 21 is supported on ground by thrust bearing；?
On ground, it is fixedly installed with load sleeve support 20, the axis of load sleeve 20 is arranged vertically, and load sleeve 12 is installed on load
Inside sleeve bearing 20, and load sleeve 12 can rotationally and axially be moved inside load sleeve support 20.
It is disposed with pivoted arm 24 in the horizontal direction, there is hole, 12 vertical direction of load sleeve in the middle part vertical direction of pivoted arm 24
It hole on pivoted arm 24 and is not in contact with hole wall, pivoted arm 24 and load sleeve 12 pass through two driving bearing pins 32 between the two
It is hinged.In the right end of pivoted arm 24, it is fixedly installed with test wheeling support 25, survey is supported with by bearing in test wheeling support 25
Wheel shaft 26 is tried, test 26 outer end of wheel shaft is fixedly installed with testing wheel 27.In the left end of pivoted arm 24, it is fixedly installed with power transmission box
13；In the left end of power transmission box 13, it is fixedly installed with auxiliary wheeling support 19, is supported in auxiliary wheeling support 19 by bearing
Wheel shaft 16 is assisted, the outer end of auxiliary wheel shaft 16 is fixedly installed with auxiliary wheel 15.One end of power transmission box 13, by shaft coupling with
The inner end of auxiliary wheel shaft 16 is connected；The other end of power transmission box 13 passes through universal joint 31, transmission shaft 23 and test wheel shaft 26
Inner end be connected.Between the upper spacer and lower clapboard in load sleeve 12, there is a hole of horizontal direction, transmission shaft 23 is from the hole
In pass through.Torque and speed sensors 22 are housed on transmission shaft 23, torque and speed sensors 22 are revolved for measuring test wheel shaft 26
The torque that transhipment is born when dynamic；When can calculate testing stand work according to this torque between testing wheel and ground
Friction force.Clump weight 14 is housed on the outside of auxiliary wheeling support 19, auxiliary wheel 15 has foot when for the work of guarantee test platform
Enough load, it is non-slip.The present embodiment auxiliary wheel 15 is identical as the diameter of testing wheel 27；Test loop path is equipped under testing wheel 27
17, subring road 18 is equipped under auxiliary wheel 15, test loop path 17 and auxiliary 18 lower part of circuit are ground；It is around rack and upper
Portion is provided with seal closure 33, can be provided with indoor environment inspection in seal closure 33 to avoid the dust polluting environment that generates when test
Instrument 30 is surveyed, can detecte the quality change situation of tire with air in seal closure 33 during ground friction.
On pivoted arm 24, it is provided with load cell 28, load cell 28 is by four foil gauge R1~R4Composition, strain
The group bridge mode of piece is shown in Fig. 5.Load cell 28 includes R1, R2, R3 and R4 totally 4 resistance strain plates, according to full-bridge connection
It pastes on pivoted arm 24, R1 and R2 are located on the upside of pivoted arm 24, and the line of centres of R1 and R2 are parallel with 24 axis of pivoted arm；R3 and R4
In 24 downside of pivoted arm, the line of centres of R3 and R4 are parallel with 24 axis of pivoted arm.Theoretically it can be proved that the output of this electric bridge only
It is directly proportional to the load of testing wheel.
Since testing wheel 27, auxiliary wheel 15 are located at the both ends of pivoted arm 24, when pivoted arm 24 rotates, testing wheel 27 is returned
Turning radius is L1, the radius of gyration of auxiliary wheel 15 is L2, by L in this present embodiment1Greater than L2, so testing wheel 27 is at work
Actual speed be greater than the actual speed of auxiliary wheel 15 at work；Testing wheel 27, auxiliary wheel 15 rotating direction should be opposite.
The transmission ratio of power transmission box 13 is negative, and meets contrary condition, so after pivoted arm 24 starts, testing wheel 27, auxiliary wheel
15 all in rolls forward.Since the transmission ratio of power transmission box 13 is negative 1, so testing wheel 27, auxiliary wheel 15 are around respective axle center
Velocity of rotation it is equal, be all ω1, and since their radius is all R, therefore their theoretical velocity is all R ω1.For theory
Speed it is equal and for unequal two wheels of actual speed, they can not realize pure rolling simultaneously, it is necessary to one of them
Have skidded phenomenon.Due to the effect of clump weight 14, the load of auxiliary wheel 15 is larger, and auxiliary wheel 15, which will not skid, is doing pure rolling
Dynamic, testing wheel 27 is inevitable to be slid forward, and slip rate s is calculated as follows:
Referring to fig. 2, when pivoted arm 24 is rotated with angular velocity omega, testing wheel 27 is slid forward, and ground is to testing wheel 27 1
Frictional force F backward1, frictional force F1Pivoted arm 24 is being hindered to rotate.Due to the effect of power transmission box 13, ground is to auxiliary wheel 15
One forward directed force F2, this directed force F2It is that pivoted arm is pushed to rotate.Due to the radius phase of testing wheel 27, auxiliary wheel 15
1 is negative Deng, the transmission ratio of power transmission box 13, so, F2=F1, but F2Arm of force L2Less than F1Arm of force L1, so F2It is insufficient
With drive pivoted arm 24 rotate, lacking in power by motor 1 by transmission system offer.
If test loop path 17, auxiliary 18 out-of-flatness of circuit, test tire pressure change, pivoted arm will appear height and become
Change or horizontal tilt phenomenon, at this time under the action of loading spring 11, support spring 21, load sleeve 12 can be in load sleeve
Float up and down in support 20, pivoted arm 24 can with driving bearing pin 32 be branch spot wobble, with this come reduce above-mentioned factor its to test
It influences.So this testing stand is able to achieve high-speed motion.
Change L1、L2Length, change power transmission box 13 transmission ratio, change auxiliary wheel 15, testing wheel 27 radius,
Different slip rates may be implemented.
Test procedure is as follows:
1. being laid with test loop path 17, auxiliary circuit 18 according to test requirements document, testing wheel 27, auxiliary wheel 15 are installed；
2. unclamping load screw rod 7, the components such as load sleeve 12 and pivoted arm 24 are lifted off ground by support spring 21, adjust counterweight
It is non-slip to guarantee that the load of auxiliary wheel 15 is able to satisfy auxiliary wheel 15 in test for the quality of block 14 and position；
3. being screwed down load screw rod 7, the components such as load sleeve 12 are pressed downward by loading spring 11, to components such as pivoted arms 24
Load measures the load of testing wheel 27 by load cell 28, after reaching test requirements document, is locked with locking nut 8；
4. starting motor 1, motor 1 drives driven pulley 4 to rotate by 2 drive belt 3 of speed reducer；Driven skin
Belt wheel 4 drives load sleeve 12 to rotate by center pipe axle 5, driving shaft coupling 9, and load sleeve 12 is driven by driving bearing pin 32
Axis rotation of the pivoted arm 24 around load sleeve 12；The auxiliary wheel 15 and testing wheel 27 at the components both ends such as pivoted arm 24 are around load sleeve 12
Center move in a circle；
5. calculating auxiliary wheel 15 according to the tach signal of torque and speed sensors 22, the theory speed that testing wheel 27 rolls
Degree；The actual speed V of testing wheel 27 is calculated according to the following formula:
In formula: V is the actual speed of testing wheel 27, and R is the radius of testing wheel 27, ω1For the survey of torque and speed sensors 22
The angular speed obtained, L1For the arm length of testing wheel 27, L2The length of 15 pivoted arm of auxiliary wheel.
6. calculating the frictional force of testing wheel 27 according to the torque signal of torque and speed sensors 22, it is calculated as follows out and surveys
Coefficient of friction f between examination wheel 27 and 17 surface of test loop path:
In formula: f is coefficient of friction, and G is the load for the testing wheel 27 that tyre load sensor 28 measures, F1To be turned by revolving speed
The frictional force that the testing wheel 27 that the data of square sensor 22 are calculated is born.
7. testing the situation of change of air quality in seal closure 33 with Indoor Environment Detection instrument 30.
Load cell 28 can use BX120 high precision electro resistive foil gauge；Indoor Environment Detection instrument 30 can use
The air quality measuring instrument of MEF500.
Embodiment 2
As shown in Figure 3, Figure 4, in the present embodiment, between the upper spacer and lower clapboard in load sleeve 12, horizontal direction
There is a macropore, pivoted arm 24 passes through from this macropore, and it is with driving bearing pin 32 that pivoted arm 24 and load sleeve 12 is hinged,
Make L by structure design1<L2, test loop path 17 be arranged in inside, auxiliary circuit 18 be arranged in outside.Remaining structure and embodiment
1 is identical.
At this moment auxiliary wheel 15 is non-slip, but the speed of service is fast, and 27 actual speed of testing wheel is slow, trackslips backward, and slippage rate σ is pressed
Following formula calculates:
When pivoted arm 24 is rotated with angular velocity omega, testing wheel 27 trackslips backward, and ground forward is rubbed to testing wheel 27 1
Wipe power F1, frictional force F1It is that driving pivoted arm 24 rotates.Due to the effect of power transmission box 13, ground to auxiliary wheel 15 1 to
Directed force F afterwards2, this directed force F2Pivoted arm 24 is being hindered to rotate, since the radius of testing wheel 27, auxiliary wheel 15 is equal, power
The transmission ratio of transmission case 13 is negative 1, so, F2=F1, but F1Arm of force L1Less than F2Arm of force L2, so F1It is not enough to drive and turn
Arm 24 rotate, lacking in power by motor 1 by transmission system offer.
Change L1、L2Length, change power transmission box 13 transmission ratio, change auxiliary wheel 15, testing wheel 27 radius,
Different slippage rates may be implemented.
When the transmission ratio of power transmission box 13 is other values, structural parameters and test parameters to device are carried out correspondingly
Adjustment, is allowed to match with test objective, meets test requirements document.
Claims (10)
1. the experimental rig of a kind of study of tire and practical pavement friction characteristic, which is characterized in that including load sleeve (12), add
Carry sleeve pedestal (20), pivoted arm (24) and rack (29)；Load sleeve pedestal (20) and rack (29) are fixed on ground, rack
(29) load nut (6) and motor (1) are fixed on, motor (1) is connect by transmission system with center pipe axle (5), in
Heart pipe axis (5) is connect with load sleeve (12), and load sleeve (12) can be rotatably set on load sleeve pedestal (20), center
Load screw rod (7) is equipped with inside pipe axis (5) and load sleeve (12)；It loads screw rod (7) one end and load nut (6) cooperates spiral shell
It connects, the other end is connected with loading spring seat (10), and loading spring seat (10) is movably set in load sleeve (12) inside, loads bullet
Spring abutment (10) is connected with loading spring (11), and loading spring (11) other end withstands on upper spacer fixed inside load sleeve (12)
On；
Load sleeve (12) is fixedly connected with pivoted arm (24), is equipped with transmission shaft (23) inside pivoted arm (24), on transmission shaft (23)
Equipped with torque and speed sensors (22), transmission shaft (23) one end is connect with testing wheel (27), the other end and power transmission box (13)
Input axis connection, the transmission ratio of power transmission box (13) is negative value；The output shaft and auxiliary wheel shaft of power transmission box (13)
(16) it connects, is fixedly connected with auxiliary wheel (15) in auxiliary wheel shaft (16)；The radius of testing wheel (27) and auxiliary wheel (15) is equal,
It is both placed on the test loop path (17) laid on the ground of rack (29) bottom；Pivoted arm is disposed with load cell on (24)
(28), torque and speed sensors (22) and load cell (28) are connected by signal transmssion line with external instrument；Pivoted arm (24)
It is equipped with clump weight (14).
2. the experimental rig of study of tire according to claim 1 and practical pavement friction characteristic, which is characterized in that load
Screw rod (7) is equipped with locking nut (8).
3. the experimental rig of study of tire according to claim 1 and practical pavement friction characteristic, which is characterized in that load
Sleeve (12) and pivoted arm (24) wear setting, are connected by several driving bearing pins (32).
4. the experimental rig of study of tire according to claim 1 and practical pavement friction characteristic, which is characterized in that load
Sleeve pedestal (20) is hollow cylinder structure, and load sleeve (12) is set on load sleeve pedestal (20), load sleeve pedestal
(20) support spring (21) are equipped in, support spring (21) one end is withstood on ground, and it is internal that the other end withstands on load sleeve (12)
On fixed lower clapboard.
5. the experimental rig of study of tire according to claim 4 and practical pavement friction characteristic, which is characterized in that load
It is equipped with thrust bearing between screw rod (7) and loading spring seat (10), thrust bearing is equipped between support spring (21) and ground, turns
Be equipped in arm (24) to supporting drive shaft (23) and assist wheel shaft (16) if dry bearing.
6. the experimental rig of study of tire according to claim 1 and practical pavement friction characteristic, which is characterized in that transmission
System includes speed reducer (2), and speed reducer (2) one end is connect with motor (1), and the other end is by belt (3) and is fixed on center
Driven pulley (4) connection on pipe axis (5).
7. the experimental rig of study of tire according to claim 1 and practical pavement friction characteristic, which is characterized in that center
Pipe axis (5) is by driving shaft coupling (9) to connect with load sleeve (12).
8. the experimental rig of study of tire according to claim 1 and practical pavement friction characteristic, which is characterized in that load
Sensor (28) includes R1, R2, R3 and R4 totally 4 resistance strain plates, is pasted on pivoted arm (24) according to full-bridge connection: R1 and
R2 is located on the upside of pivoted arm (24), and the line of centres of R1 and R2 are parallel with pivoted arm (24) axis；R3 and R4 is located on the downside of pivoted arm (24),
The line of centres of R3 and R4 is parallel with pivoted arm (24) axis.
9. the experimental rig of study of tire according to claim 1 and practical pavement friction characteristic, which is characterized in that test
Circuit (17) has been adjacently positioned auxiliary circuit (18), and auxiliary circuit (18) is concentric from test loop path (17) and material is different.
10. the experimental rig of study of tire according to claim 1 and practical pavement friction characteristic, which is characterized in that machine
Frame (29) is equipped with seal closure (33), and seal closure (33) and ground form closed space, and indoor ring is equipped in seal closure (33)
Border detector (30).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920154330.4U CN209485945U (en) | 2019-01-29 | 2019-01-29 | A kind of experimental rig of study of tire and practical pavement friction characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920154330.4U CN209485945U (en) | 2019-01-29 | 2019-01-29 | A kind of experimental rig of study of tire and practical pavement friction characteristic |
Publications (1)
| Publication Number | Publication Date |
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| CN209485945U true CN209485945U (en) | 2019-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920154330.4U Withdrawn - After Issue CN209485945U (en) | 2019-01-29 | 2019-01-29 | A kind of experimental rig of study of tire and practical pavement friction characteristic |
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| CN (1) | CN209485945U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612929A (en) * | 2019-01-29 | 2019-04-12 | 西安凯德液压机电有限责任公司 | A kind of experimental rig and method of study of tire and practical pavement friction characteristic |
| CN110907320A (en) * | 2019-11-22 | 2020-03-24 | 中国矿业大学 | Laboratory simulation pavement dust production and detection method |
| CN113484507A (en) * | 2021-06-29 | 2021-10-08 | 长春工业大学 | Device and method for testing strain distribution and dynamic slip rate of rolling tire tread |
| CN113607444A (en) * | 2021-07-26 | 2021-11-05 | 燕山大学 | High-speed heavy-duty train wheel rail profile friction wear and rolling contact fatigue test device |
| CN113702226A (en) * | 2021-08-27 | 2021-11-26 | 浙江兄弟路标涂料有限公司 | Wheel assembly for simulating wear of pavement markings |
| CN113820269A (en) * | 2021-09-29 | 2021-12-21 | 武汉理工大学 | Road surface function rapid tester |
-
2019
- 2019-01-29 CN CN201920154330.4U patent/CN209485945U/en not_active Withdrawn - After Issue
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612929A (en) * | 2019-01-29 | 2019-04-12 | 西安凯德液压机电有限责任公司 | A kind of experimental rig and method of study of tire and practical pavement friction characteristic |
| CN109612929B (en) * | 2019-01-29 | 2024-01-05 | 西安凯德液压机电有限责任公司 | Test device and method for researching friction characteristics between tire and actual road surface |
| CN110907320A (en) * | 2019-11-22 | 2020-03-24 | 中国矿业大学 | Laboratory simulation pavement dust production and detection method |
| CN113484507A (en) * | 2021-06-29 | 2021-10-08 | 长春工业大学 | Device and method for testing strain distribution and dynamic slip rate of rolling tire tread |
| CN113607444A (en) * | 2021-07-26 | 2021-11-05 | 燕山大学 | High-speed heavy-duty train wheel rail profile friction wear and rolling contact fatigue test device |
| CN113607444B (en) * | 2021-07-26 | 2022-04-19 | 燕山大学 | High-speed heavy-duty train wheel rail profile friction wear and rolling contact fatigue test device |
| CN113702226A (en) * | 2021-08-27 | 2021-11-26 | 浙江兄弟路标涂料有限公司 | Wheel assembly for simulating wear of pavement markings |
| CN113820269A (en) * | 2021-09-29 | 2021-12-21 | 武汉理工大学 | Road surface function rapid tester |
| CN113820269B (en) * | 2021-09-29 | 2022-11-18 | 武汉理工大学 | Road surface function rapid tester |
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