CN217156240U - Assembly movable type road surface friction coefficient detection device - Google Patents
Assembly movable type road surface friction coefficient detection device Download PDFInfo
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- CN217156240U CN217156240U CN202220482305.0U CN202220482305U CN217156240U CN 217156240 U CN217156240 U CN 217156240U CN 202220482305 U CN202220482305 U CN 202220482305U CN 217156240 U CN217156240 U CN 217156240U
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Abstract
The utility model discloses an assembly movable type pavement friction coefficient detection device, which comprises a movable base mechanism, wherein a supporting and positioning mechanism and a friction test mechanism are arranged on the movable base mechanism, the supporting and positioning mechanism comprises a first support and a second support, the first support and the second support are respectively connected with a first hydraulic lifting rod component and a second hydraulic lifting rod component, and a first cross brace is connected between the first hydraulic lifting rod component and the second hydraulic lifting rod component; the friction test mechanism comprises a driving wheel, a test wheel and a test wheel support, the driving wheel is connected between two first cross support beams through a first rotating shaft rod assembly, the side end of each first cross support beam is connected with a first motor, the outer end portion of the driving wheel is connected with a second shaft rod assembly through a test wheel connecting frame, and the test wheel is rotatably connected onto the second shaft rod assembly and driven by a second motor connected to the side end of the test wheel connecting frame. The device moves the assembly simply, detects reliable and stable, and the suitability is strong, and detection effect is good.
Description
Technical Field
The utility model relates to an airport concrete pavement cling compound performance detects technical field, especially relates to a portable pavement friction coefficient detection device of assembly.
Background
At present, the runway anti-skid performance test can adopt a fixed point type anti-skid performance test method and a continuous type anti-skid performance test method, wherein the fixed point type anti-skid performance test method adopts a pendulum type friction instrument as test equipment, and the continuous type anti-skid performance test method adopts a Mu instrument trailer, a slipperimeter trailer, a surface friction test vehicle, a runway friction test vehicle, a TATRA friction test vehicle and an anti-skid test instrument trailer for testing. However, the pendulum-type friction meter has poor applicability and certain requirements on the texture form of the road surface, and therefore the test has certain limitations. The friction resistance test vehicle and other equipment are suitable for testing the sliding friction coefficient, but have certain defects. The method comprises the steps that the required distance for testing is long, the friction coefficient test value of the road surface is fuzzy, and the friction coefficient value of the local road surface cannot be accurately tested, so that the measurement of the skid resistance of the local road surface cannot be realized, and an indoor test cannot be realized. The structure is more complicated and the operation is not easy.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an assembly portable road surface coefficient of friction detection device, the device remove the assembly simple, detect reliable and stable, the suitability is strong, and detection effect is good.
The utility model discloses a realize above-mentioned purpose, the technical solution who adopts is:
an assembly movable type pavement friction coefficient detection device comprises a movable base mechanism, wherein a supporting and positioning mechanism is assembled and connected onto the movable base mechanism and comprises a first support and a second support, two groups of first hydraulic lifting rod assemblies are connected to the upper end of the first support, two groups of second hydraulic lifting rod assemblies are connected to the second support, a first cross support beam is connected between the first hydraulic lifting rod assemblies and the second hydraulic lifting rod assemblies, and a friction test mechanism is connected between the two first cross support beams;
the friction test mechanism comprises a driving wheel, a test wheel and a test wheel bracket, the driving wheel is connected between two first cross support beams through a first rotating shaft rod assembly, the side ends of the first cross support beams are connected with a first motor, the outer end part of the driving wheel is connected with a second shaft rod assembly through a test wheel connecting frame, and the test wheel is rotatably connected to the second shaft rod assembly and driven by a second motor connected to the side end of the test wheel connecting frame;
all be provided with speed sensor on action wheel and the test wheel, the junction department of first pivot pole subassembly and first spreader beam is provided with pressure sensor and frictional force sensor.
Preferably, the movable base mechanism comprises two first bases and a rotary supporting wheel assembly, the two first bases are fixedly connected through two first bottom beams, and the side ends of the first bases are connected with the rotary supporting wheel assembly.
Preferably, the rotating support wheel assembly comprises a positioning support vertical plate, an outer rotating shaft sleeve assembly, a wheel support seat, a steel wheel and a support seat positioning pin, the positioning support vertical plate is connected to the lower end of the end portion of the first base, the outer rotating shaft sleeve assembly is connected to the outer side wall of the first base, the lower end of a rotating rod of the outer rotating shaft sleeve assembly is vertically connected with the wheel support seat, the lower end of the wheel support seat is connected with the steel wheel, and the wheel support seat is connected with the positioning support vertical plate through the support wheel positioning pin.
Preferably, the first base is in a rectangular block shape, and the end part of the first bottom beam is inserted into the first base and then fixed through a base side end fixing bolt;
offer the first base positioning groove who is used for laying first support, second support in the upper end of first base, first support, second support pass through the bolt and are fixed with first base.
Preferably, first support and second support all are rectangle cubic, are provided with battery pack and total controller on the first support, are provided with the hydraulic pump subassembly of the first hydraulic lifting rod subassembly of drive, second hydraulic lifting rod subassembly on the second support.
Preferably, two groups of first hydraulic lifting rod assemblies are arranged on the first support, and two groups of second hydraulic lifting rod assemblies are arranged on the second support;
the first cross bracing beam is in the shape of a rectangular rod, the lower end of the end part of the first cross bracing beam is connected with a bracing beam connecting cylinder, and the bracing beam connecting cylinder is sleeved on the first hydraulic lifting rod assembly or the second hydraulic lifting rod assembly and then fixed through a bracing beam positioning bolt.
Preferably, the radius of the driving wheel is larger than that of the test wheel, and the driving wheel comprises an inner hub and an outer rubber wheel sleeved at the outer end of the inner hub;
the test wheel connecting frame comprises two L-shaped rod-shaped test wheel connecting pipes which are arranged in a mirror symmetry manner and are fixedly connected with the inner hub;
the first motor drives the driving wheel to rotate through the first rotating shaft component, and the storage battery component is connected with the first motor through the first circuit.
Preferably, set up electric wire installation through-hole in the first axis of rotation pole subassembly, be provided with wheel hub lead to the line protection tube in the interior wheel hub, be provided with the test wheel lead to the line protection tube in the test wheel connecting pipe, even have the second circuit on the first circuit, the second circuit passes behind electric wire installation through-hole, wheel hub lead to the line protection tube, the test wheel lead to the line protection tube and is connected with the second motor.
Preferably, a lifting sensing assembly is arranged on the first hydraulic lifting rod assembly or the first hydraulic lifting rod assembly, and the lifting height sensing assembly comprises a distance measurement and control transmitter and a distance measurement and control receiver.
The utility model has the advantages that:
the movable road surface friction coefficient detection device is convenient to assemble and simple to disassemble, has low requirements on sites, and can meet both indoor tests and outdoor tests. The height of the device is adjustable, so that the requirement of each test on clearance is met, and the mounting of test wheels with different diameters is facilitated.
Drawings
In order to clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the apparatus for detecting coefficient of friction of assembled movable pavement.
FIG. 2 is a schematic view of the connection structure of the supporting and positioning mechanism and the friction testing mechanism.
Detailed Description
The utility model provides an assembly portable road surface coefficient of friction detection device, for making the utility model discloses a purpose, technical scheme and effect are clearer, more clear and definite, it is following right the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The present invention will be described in detail with reference to the accompanying drawings:
example 1
With reference to fig. 1 and 2, an assembled mobile road surface friction coefficient detection device includes a mobile base mechanism 1, and a supporting and positioning mechanism 2 is assembled and connected to the mobile base mechanism 1.
The supporting and positioning mechanism 2 comprises a first support 21 and a second support 22, the upper end of the first support 21 is connected with two sets of first hydraulic lifting rod assemblies 23, the second support 22 is connected with two sets of second hydraulic lifting rod assemblies 24, a first cross support beam 25 is connected between the first hydraulic lifting rod assemblies 23 and the second hydraulic lifting rod assemblies 24, and a friction test mechanism 3 is connected between the two first cross support beams 25.
The friction test mechanism 3 comprises a driving wheel 31, a test wheel 32 and a test wheel bracket 33, wherein the driving wheel 31 is connected between the two first cross beams 25 through a first rotating shaft component 33, and the side ends of the first cross beams 25 are connected with a first motor 34.
The outer end of the driving wheel 31 is connected with a second shaft assembly 35 through a test wheel connecting frame 311, and the test wheel 32 is connected on the second shaft assembly 35 and driven by a second motor 36 connected at the side end of the test wheel connecting frame 311.
The driving wheel 31 and the testing wheel 32 are provided with rotating speed sensors, and the connecting end of the first rotating shaft assembly 33 and the first cross support beam 25 is provided with a pressure sensor 26 and a friction force sensor.
The movable base mechanism 1 comprises two first bases 11 and four rotating supporting wheel assemblies 12, the two first bases 11 are fixedly connected through two first bottom beams 13, the side ends of the first bases 11 are connected with the rotating supporting wheel assemblies 12, and each first base 11 is matched with the two groups of rotating supporting wheel assemblies 12.
The rotating support wheel assembly 12 comprises a positioning support vertical plate 14, an outer rotating shaft sleeve assembly 15, a wheel support seat 16, a steel wheel 17 and a support seat positioning pin 18, the positioning support vertical plate 14 is connected to the lower end of the end portion of the first base 11, the outer rotating shaft sleeve assembly 15 is connected to the outer side wall of the first base 11, the lower end of the rotating shaft of the outer rotating shaft sleeve assembly 15 is vertically connected with the wheel support seat 16, the lower end of the wheel support seat 16 is connected with the steel wheel 17, and the wheel support seat 16 is connected with the positioning support vertical plate 4 through the support wheel positioning pin 18. Through the rotation supporting wheel subassembly 12 that sets up novel structure, can be more convenient and accomodate the transportation to it is more convenient in the maintenance arrangement.
The first base 11 is rectangular block-shaped, and the end of the first bottom beam 13 is inserted into the first base 11 and then fixed by a base side end fixing bolt.
First base positioning groove 111 for placing first support 21 and second support 22 is formed in the upper end face of first base 11, and after first support 21 and second support 22 are placed in first base positioning groove 111, first support 21 and second support 22 are fixed with first base 11 through bolts.
Two groups of first hydraulic lifting rod assemblies 23 are arranged on the first support 21, and two groups of second hydraulic lifting rod assemblies 24 are arranged on the second support 2; the first cross bracing beam 25 is in a rectangular rod shape, the lower end of the end part of the first cross bracing beam 25 is connected with a bracing beam connecting cylinder 27, and the bracing beam connecting cylinder 27 is sleeved on the first hydraulic lifting rod assembly 23 or the second hydraulic lifting rod assembly 24 and then fixed by a bracing beam positioning bolt.
The radius of the driving wheel 31 is larger than that of the testing wheel 32, and the driving wheel 31 comprises an inner hub and an outer rubber wheel sleeved at the outer end of the inner hub. The test wheel connecting frame 311 comprises two L-shaped rod-shaped test wheel connecting pipes which are arranged in a mirror symmetry mode, and the test wheel connecting pipes are fixedly connected with the inner hub.
The first motor 34 drives the driving wheel to rotate through the first rotating shaft assembly 33, and the storage battery assembly 211 is connected with the first motor 34 through a first line.
Set up electric wire installation through-hole in the first axis of rotation pole subassembly 33, be provided with wheel hub lead to the line protection tube in the interior wheel hub, be provided with the test wheel lead to the line protection tube in the test wheel connecting pipe, even have the second circuit on the first circuit, the second circuit passes behind electric wire installation through-hole, wheel hub lead to the line protection tube, the test wheel lead to the line protection tube and is connected with the second motor.
Example 2
When the assembled movable road surface friction coefficient detection device is used, the assembled movable road surface friction coefficient detection device comprises the following contents:
and (6) mounting a test wheel. Assembling and placing a friction coefficient measuring device at the selected position to ensure that the supporting and positioning mechanism 2 is stably placed on the road surface to be measured; installing corresponding test wheels according to test conditions and requirements, checking that the surfaces of the test wheels are in a non-abrasion state before installation, and adjusting the hydraulic lifting rod assembly to a proper height according to the size of the wheel diameter; and (3) checking whether the connection of each component of the friction coefficient measuring device is stable or not, and ensuring that all the components are in a normal working state without instrument separation.
A vertical load is applied. According to the size of vertical load among the experimental requirement, adjust hydraulic lifting rod subassembly to adjust the area of contact of test wheel and road surface, and the area of contact of touching when test wheel and road surface are rotatory, thereby the corresponding atress condition of simulation aircraft tire when landing and take off and land, when detecting, and adopt pressure sensor to carry out the power check.
The calculation formula of the vertical pressure generated on the road surface after the application is finished is as follows:
a fixed slip ratio is set. The friction force sensor is arranged at the axle position of the test wheel, a water film with fixed thickness is sprayed at the selected position, the first motor and the second motor are started firstly, and the rotating speed of the driving wheel and the test wheel is adjusted to the testing wheel speed V specified in the test condition by utilizing the rotating speed control module in the master controller 0 . And then the rotating speed control module is utilized to slowly adjust the rotating speed V of the driving wheel until the slip ratio between the driving wheel and the driving wheel meets the test requirement.
The slip ratio calculation formula is as follows:
in the formula: s is the slip ratio;
v is the speed of the driving wheel, km/h;
V 0 -measuring wheel speed, km/h;
when the rotating speed difference between the driving wheel and the testing wheel reaches the fixed slip rate required by the test, the collection of the numerical value of the rotating speed sensor is started until the numerical value tends to be stable, and then the collection is stopped, and the first motor and the second motor are respectively and slowly braked. The data collected by the rotating speed sensor is arranged to obtain a friction force test value F f 。
The sliding friction coefficient value is calculated by the following formula:
in the formula: mu-coefficient of sliding friction;
F f -friction, kN;
n-vertical pressure, kN.
Example 3
After the test of the slippage rate is completed in a certain area, the structure of the test part consisting of the supporting and positioning mechanism 2 and the friction test mechanism 3 is conveyed to the movable base mechanism, then the whole device is pushed to the next test point, the area needing side view is determined, the supporting and positioning mechanism 2 is firstly positioned after the supporting and positioning mechanism 2 and the friction test mechanism 3 are separated, and then the friction test mechanism 3 is connected to the supporting and positioning mechanism 2 through the supporting beam connecting cylinder 27.
The movable road surface friction coefficient detection device is convenient to assemble and simple to disassemble, has low requirements on sites, and can meet both indoor tests and outdoor tests. The height of the device is adjustable, so that the requirement of each test on clearance is met, and the mounting of test wheels with different diameters is facilitated.
The utility model discloses be equipped with first motor, second motor, first motor is used for controlling the driving wheel rotational speed, and the second motor is used for controlling the test wheel rotational speed to realize the survey of coefficient of friction under certain slippage rate condition. The device can realize circulating rotation, thereby realizing the measurement of the friction coefficient of the local road surface.
The utility model discloses be equipped with pressure sensor and revolution speed sensor, still be equipped with friction force sensor, pressure sensor lays in the bearing connection of test wheel and is used for surveing its frictional force, and friction force sensor lays in test wheel bearing lower extreme and is used for surveing frictional force, the effectual survey of simulating friction coefficient under the driving load effect.
The utility model discloses it is simple and direct to operate, need not auxiliary vehicle equipment, reduced a large amount of economic cost. The method has strong pertinence to local pavement, short test period and high efficiency, and has certain reference significance to pavement repair technology and non-navigation construction.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The parts not mentioned in the utility model can be realized by adopting or using the prior art for reference.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.
Claims (9)
1. The device for detecting the friction coefficient of the assembled movable type pavement is characterized by comprising a movable base mechanism, wherein a supporting and positioning mechanism is assembled and connected onto the movable base mechanism and comprises a first support and a second support, two groups of first hydraulic lifting rod assemblies are connected to the upper end of the first support, two groups of second hydraulic lifting rod assemblies are connected to the second support, a first cross support beam is connected between the first hydraulic lifting rod assemblies and the second hydraulic lifting rod assemblies, and a friction test mechanism is connected between the two first cross support beams;
the friction test mechanism comprises a driving wheel, a test wheel and a test wheel bracket, the driving wheel is connected between two first cross support beams through a first rotating shaft rod assembly, the side ends of the first cross support beams are connected with a first motor, the outer end part of the driving wheel is connected with a second shaft rod assembly through a test wheel connecting frame, and the test wheel is rotatably connected to the second shaft rod assembly and driven by a second motor connected to the side end of the test wheel connecting frame;
all be provided with speed sensor on action wheel and the test wheel, the junction department of first pivot pole subassembly and first spreader beam is provided with pressure sensor and frictional force sensor.
2. The apparatus of claim 1, wherein the movable base mechanism comprises two first bases and a rotary supporting wheel assembly, the two first bases are fixedly connected through two first bottom beams, and the side ends of the first bases are connected with the rotary supporting wheel assembly.
3. The apparatus of claim 2, wherein the rotating support assembly comprises a positioning support plate, an outer rotating bushing assembly, a wheel support base, a steel wheel, and a support base positioning pin, the positioning support plate is connected to a lower end of the end portion of the first base, the outer rotating bushing assembly is connected to an outer sidewall of the first base, a lower end of the rotating shaft of the outer rotating bushing assembly is vertically connected to the wheel support base, the lower end of the wheel support base is connected to the steel wheel, and the wheel support base is connected to the positioning support plate through the support base positioning pin.
4. The device for detecting the friction coefficient of an assembled movable pavement according to claim 2, wherein the first base is rectangular block-shaped, and the end part of the first bottom beam is inserted into the first base and then fixed by a base side end fixing bolt;
offer the first base positioning groove who is used for laying first support, second support in the upper end of first base, first support, second support pass through the bolt and are fixed with first base.
5. The assembling mobile road surface friction coefficient detection device according to claim 1, wherein the first support and the second support are both rectangular blocks, the first support is provided with a storage battery assembly and a master controller, and the second support is provided with a hydraulic pump assembly for driving the first hydraulic lifting rod assembly and the second hydraulic lifting rod assembly.
6. The assembled movable road surface friction coefficient detection device of claim 1, wherein two sets of first hydraulic lifting rod assemblies are arranged on the first support, and two sets of second hydraulic lifting rod assemblies are arranged on the second support;
the first cross bracing beam is in the shape of a rectangular rod, the lower end of the end part of the first cross bracing beam is connected with a bracing beam connecting cylinder, and the bracing beam connecting cylinder is sleeved on the first hydraulic lifting rod assembly or the second hydraulic lifting rod assembly and then fixed through a bracing beam positioning bolt.
7. The assembled movable road surface friction coefficient detection device as claimed in claim 5, wherein the radius of the driving wheel is larger than that of the test wheel, and the driving wheel comprises an inner hub and an outer rubber wheel sleeved at the outer end of the inner hub;
the test wheel connecting frame comprises two L-shaped rod-shaped test wheel connecting pipes which are arranged in a mirror symmetry manner and are fixedly connected with the inner hub;
the first motor drives the driving wheel to rotate through the first rotating shaft component, and the storage battery component is connected with the first motor through the first circuit.
8. The apparatus of claim 7, wherein the first shaft assembly has a wire mounting hole, the inner hub has a hub wire protection tube, the test wheel connection tube has a test wheel wire protection tube, the first wire is connected to a second wire, and the second wire passes through the wire mounting hole, the hub wire protection tube and the test wheel wire protection tube and is connected to a second motor.
9. The device for detecting the friction coefficient of an assembled movable type pavement according to claim 1, wherein a lifting sensing assembly is arranged on the first hydraulic lifting rod assembly or the first hydraulic lifting rod assembly, and the lifting height sensing assembly comprises a distance measurement and control transmitter and a distance measurement and control receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220482305.0U CN217156240U (en) | 2022-03-07 | 2022-03-07 | Assembly movable type road surface friction coefficient detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220482305.0U CN217156240U (en) | 2022-03-07 | 2022-03-07 | Assembly movable type road surface friction coefficient detection device |
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| Publication Number | Publication Date |
|---|---|
| CN217156240U true CN217156240U (en) | 2022-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220482305.0U Active CN217156240U (en) | 2022-03-07 | 2022-03-07 | Assembly movable type road surface friction coefficient detection device |
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| Country | Link |
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| CN (1) | CN217156240U (en) |
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2022
- 2022-03-07 CN CN202220482305.0U patent/CN217156240U/en active Active
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