CN211206199U - Asphalt mixture sample skid resistance detection device - Google Patents
Asphalt mixture sample skid resistance detection device Download PDFInfo
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- CN211206199U CN211206199U CN201922270056.XU CN201922270056U CN211206199U CN 211206199 U CN211206199 U CN 211206199U CN 201922270056 U CN201922270056 U CN 201922270056U CN 211206199 U CN211206199 U CN 211206199U
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Abstract
The utility model relates to a road test equipment technical field especially relates to an asphalt mixture sample skid resistance capability detection device, is equipped with sample test wheel in the casing, and the inner ring of sample test wheel is equipped with the ring channel that is used for laying asphalt mixture, and sample test wheel is rotationally movable mounting in the casing, and pneumatic cylinder and gyro wheel correspond in sample test wheel, and the piston rod of pneumatic cylinder is connected motor support, roller transmission connect in the motor, the gyro wheel can touch along with stretching out of piston rod asphalt mixture surface on the ring channel is equipped with arresting gear on the gyro wheel, the outer fringe fixedly connected with plectrum of sample test wheel, plectrum outer end and contact inductor contact, and the plectrum can touch the contact inductor along with the rotation of sample test wheel in succession. The utility model discloses can carry out the skid resistance capability test to the bituminous mixture sample before laying the bituminous paving, be favorable to the staff to select the bituminous mixture sample that the skid resistance is the best to lay the road surface according to the test result.
Description
Technical Field
The utility model relates to a road check out test set technical field especially relates to an asphalt mixture sample skid resistance performance detection device.
Background
The skid resistance of the road refers to the strength of the road surface for preventing the vehicle from generating the sliding capacity under the specific weather condition; the friction force is the magnitude of the friction force generated by the sliding of the road surface and the vehicle tire; the performance of the road surface skid resistance is determined by many aspects, such as the maintenance level of the road, the construction process level, the selection of building materials, the design of the road surface and the like. The asphalt mixture is a main material for paving roads in China at present, and the anti-skid performance of the asphalt pavement has important detection significance; considering from the aspect of driving safety, the method is of great safety significance for researching and analyzing the anti-skid performance of the asphalt pavement, implementing effective anti-skid technology and measures and periodically detecting the anti-skid performance of the pavement.
However, the detection equipment in the prior art usually only detects the anti-skid performance of the pavement aiming at the paved asphalt pavement, and if the anti-skid performance of the asphalt mixture samples with different mixing ratios can be tested before the asphalt pavement is paved, the asphalt mixture sample with the best anti-skid performance is selected according to the test result to pave the pavement, so that the construction of the asphalt pavement can be realized more appropriately.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an asphalt mixture sample skid resistance capability test device can carry out the skid resistance capability test to the asphalt mixture sample before laying the asphalt pavement, is favorable to the staff to select the best asphalt mixture sample of skid resistance capability to lay the road surface according to the test result.
In order to solve the technical problem, the utility model discloses a technical scheme is:
an asphalt mixture sample skid resistance detection device comprises a shell, wherein a sample testing wheel, a contact inductor, a hydraulic cylinder, a motor bracket and a roller wheel are arranged in the shell, the inner ring of the sample testing wheel is provided with an annular groove for paving the asphalt mixture, the sample testing wheel is rotatably and movably arranged in the shell, the hydraulic cylinder and the roller are correspondingly arranged in the sample testing wheel, a piston rod of the hydraulic cylinder is connected with the motor bracket, the motor is fixed on the motor bracket, the roller is connected with the motor in a transmission way, the roller can touch the surface of the asphalt mixture on the annular groove along with the extension of the piston rod, a braking device is arranged on the roller, the outer edge of the sample testing wheel is fixedly connected with a shifting piece, the outer end of the shifting piece is in contact with the contact sensor, and the shifting piece can continuously touch the contact sensor along with the rotation of the sample testing wheel.
Before detection, filling an asphalt mixture sample in an annular groove of an inner ring of the sample testing wheel, after the asphalt mixture is cooled, controlling a piston rod of a hydraulic cylinder to extend out to drive a motor bracket and a roller to move, wherein the roller can touch the asphalt mixture on the annular groove along with the extension of the piston rod, then starting the motor to drive the roller to rotate, the roller can drive the whole sample testing wheel to rotate under the relative friction action of the roller and the surface of the asphalt mixture, when the rotation of the roller reaches a required initial speed V, stopping the motor and braking the roller by controlling a braking device, after the rotation of the roller is stopped, the roller and the surface of the asphalt mixture continue relative sliding friction under the inertia action, the sample testing wheel still continues to rotate, a dial plate continuously touches a contact sensor along with the rotation of the sample testing wheel, and the touch times of the contact sensor and the dial plate begin to be recorded at the moment when the roller is stopped by the braking device, and then, after the rotation speed of the roller is gradually reduced and finally the rotation of the roller is stopped, recording the time length required by the speed reduction process of the roller from the speed V to 0, and then obtaining the anti-skid property of the asphalt mixture sample according to related calculation. In this way, the anti-skid performance detection test is carried out on the plurality of asphalt mixture samples, and finally the asphalt mixture sample with the best anti-skid performance can be selected to pave the pavement.
The sample testing wheel is provided with a shifting sheet which can be contacted with the contact inductor, so that the number of turns of the rolling wheel in the speed reduction process from the speed V to 0 and the time required by the speed reduction can be conveniently measured, and the anti-skid performance of the asphalt pavement can be conveniently obtained through calculation; meanwhile, the sample testing wheel rotates for a circle, the shifting piece can only be in contact with the contact inductor once, and the number of rotation turns of the sample testing wheel is counted conveniently. In addition, the motor is in transmission connection with the roller, and the friction force between the roller and the sample testing wheel is utilized to drive the sample testing wheel to rotate, so that the sample testing wheel can be effectively endowed with enough initial speed, the sample testing wheel can be conveniently rotated fully, and the detection accuracy is facilitated.
Therefore the utility model relates to an asphalt mixture sample skid resistance capability test device can carry out the skid resistance capability test to the asphalt mixture sample before laying the asphalt pavement, is favorable to the staff to select the best asphalt mixture sample of skid resistance capability to lay the road surface according to the test result.
Further, be provided with annular spout in the casing, sample test wheel detachably cooperation cup joints in annular spout and can slide with the inner wall relative of annular spout. Thereby allowing the sample testing wheel to rotate within the housing.
Furthermore, the casing is provided with a blocking piece, the blocking piece corresponds to the front end face of the sample testing wheel and can limit the outward movement of the sample testing wheel, and the blocking piece is pivoted on the front side of the casing and can rotate around the pivoting shaft.
Furthermore, a water tank is arranged on the upper side of the shell, a flexible pipe is communicated with the lower side of the water tank, and a nozzle is arranged at the tail end of the flexible pipe. When the anti-skid performance test of the wet asphalt pavement needs to be simulated, before the motor is started, a worker can control the flexible pipe to move downwards, open the nozzle to spray water towards the asphalt mixture on the sample testing wheel, so that the asphalt mixture is wetted in advance, simulate the wet and slippery asphalt pavement, then start the motor, measure a series of data and further obtain the anti-skid performance of the wet asphalt pavement.
The utility model has the advantages that:
before detection, filling an asphalt mixture sample in an annular groove of an inner ring of the sample testing wheel, after the asphalt mixture is cooled, controlling a piston rod of a hydraulic cylinder to extend out to drive a motor bracket and a roller to move, wherein the roller can touch the asphalt mixture on the annular groove along with the extension of the piston rod, then starting the motor to drive the roller to rotate, the roller can drive the whole sample testing wheel to rotate under the relative friction action of the roller and the surface of the asphalt mixture, when the rotation of the roller reaches a required initial speed V, stopping the motor and braking the roller by controlling a braking device, after the rotation of the roller is stopped, the roller and the surface of the asphalt mixture continue relative sliding friction under the inertia action, the sample testing wheel still continues to rotate, a dial plate continuously touches a contact sensor along with the rotation of the sample testing wheel, and the touch times of the contact sensor and the dial plate begin to be recorded at the moment when the roller is stopped by the braking device, and then, after the rotation speed of the roller is gradually reduced and finally the rotation of the roller is stopped, recording the time length required by the speed reduction process of the roller from the speed V to 0, and then obtaining the anti-skid property of the asphalt mixture sample according to related calculation. In this way, the anti-skid performance detection test is carried out on the plurality of asphalt mixture samples, and finally the asphalt mixture sample with the best anti-skid performance can be selected to pave the pavement.
The sample testing wheel is provided with a shifting sheet which can be contacted with the contact inductor, so that the number of turns of the rolling wheel in the speed reduction process from the speed V to 0 and the time required by the speed reduction can be conveniently measured, and the anti-skid performance of the asphalt pavement can be conveniently obtained through calculation; meanwhile, the sample testing wheel rotates for a circle, the shifting piece can only be in contact with the contact inductor once, and the number of rotation turns of the sample testing wheel is counted conveniently. In addition, the motor is in transmission connection with the roller, and the friction generated by the rotation of the roller and the sample testing wheel is utilized to drive the sample testing wheel to rotate, so that the sample testing wheel can be effectively endowed with enough initial speed, the sample testing wheel can be conveniently rotated fully, and the detection accuracy is facilitated.
Therefore the utility model relates to an asphalt mixture sample skid resistance capability test device can carry out the skid resistance capability test to the asphalt mixture sample before laying the asphalt pavement, is favorable to the staff to select the best asphalt mixture sample of skid resistance capability to lay the road surface according to the test result.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Detailed Description
The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and schematic or simplified schematic drawings only, not for the purpose of limiting the same, and not for the purpose of limiting the same; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "vertical", "horizontal", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, the description is merely for convenience and simplicity of description, and it is not intended to indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, the terms describing the positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
Furthermore, if terms such as "first," "second," etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, it will be apparent to those of ordinary skill in the art that the specific meanings of the above terms may be understood according to particular circumstances.
As shown in fig. 1, an asphalt mixture sample skid resistance detection device includes a housing 100, a sample testing wheel 200, a contact sensor 300, a hydraulic cylinder 400, a motor (not shown), a motor bracket 600 and a roller 700 are arranged in the housing 100, an annular groove 201 for laying asphalt mixture is arranged in an inner ring of the sample testing wheel 200, an annular chute 101 is arranged in the housing 100, the sample testing wheel 200 is detachably fitted and sleeved in the annular chute 101 and can slide relative to an inner wall of the annular chute 101, so that the sample testing wheel 200 is rotatably and movably mounted in the housing 100, the hydraulic cylinder 400 and the roller 700 are correspondingly arranged in the sample testing wheel 200, a piston rod 401 of the hydraulic cylinder 400 is connected with the motor bracket 600, the motor is fixed on the motor bracket 600, the roller 700 is connected with a power output end of the motor in a transmission manner, the roller 700 can contact with an asphalt mixture surface on the annular groove 201 along with extension of the, the roller 700 is provided with a brake device (not shown in the figure), when the roller 700 rotates, the brake device can brake the roller 700 to stop rotating, the outer edge of the sample testing wheel 200 is fixedly connected with the shifting piece 301, the outer end of the shifting piece 301 is in contact with the contact sensor 300, and the shifting piece 301 can continuously touch the contact sensor 300 along with the rotation of the sample testing wheel 200.
In the operation of the embodiment, firstly, the asphalt mixture sample is filled in the annular groove 201 of the inner ring of the sample testing wheel 200, after the asphalt mixture is cooled, the piston rod 401 of the hydraulic cylinder 400 can be controlled to extend downwards to drive the motor bracket 600 and the roller 700 to move, the roller 700 can contact the surface of the asphalt mixture on the annular groove 201 downwards along with the extension of the piston rod 401, then the motor is started to drive the roller 700 to rotate, the roller 700 can drive the whole sample testing wheel 200 to rotate under the relative friction action of the roller 700 and the surface of the asphalt mixture, when the rotation of the roller 700 reaches the required initial speed V, the motor is stopped and the roller 700 is stopped by controlling the braking device, the roller 700 continues to perform the relative sliding friction with the surface of the asphalt mixture under the inertia action, the sample testing wheel 200 still continues to rotate, the poking piece 301 continuously contacts the contact sensor 300 along with the rotation of the sample testing wheel 200, the contact frequency of the contact sensor 300 and the plectrum 301 is recorded at the moment when the roller 700 is stopped by the braking device, then the time length required by the period of the deceleration process that the roller 700 is reduced from the speed V to 0 is recorded after the rotation speed of the roller 700 is gradually reduced and finally the rotation is stopped, and then the anti-skid performance of the asphalt mixture sample is obtained according to related calculation. In this way, the anti-skid performance detection test is carried out on the plurality of asphalt mixture samples, and finally the asphalt mixture sample with the best anti-skid performance can be selected to pave the pavement.
The sample testing wheel 200 is fixedly connected with a shifting piece 301, the shifting piece 301 can be in contact with the contact sensor 300, the number of rotation turns and the time required by deceleration of the roller 700 in the deceleration process of descending from the speed V to 0 can be conveniently measured, and the anti-skid performance of the asphalt pavement can be conveniently obtained through calculation; meanwhile, the sample testing wheel 200 rotates for a circle, the poking sheet 301 can only contact with the contact inductor 300 once, and the number of rotation turns of the sample testing wheel 200 is counted conveniently. In addition, the motor is in transmission connection with the roller 700, and the sample testing wheel 200 is driven to rotate by the friction force between the roller 700 and the sample testing wheel 200, so that the sample testing wheel 200 can be effectively given enough initial speed, the sample testing wheel 200 can rotate sufficiently, and the detection accuracy is facilitated.
Therefore the utility model relates to an asphalt mixture sample skid resistance capability test device can carry out the skid resistance capability test to the asphalt mixture sample before laying the asphalt pavement, is favorable to the staff to select the best asphalt mixture sample of skid resistance capability to lay the road surface according to the test result.
As a further supplement and improvement to this embodiment, as shown in fig. 1, a blocking plate 102 is mounted on the housing 100, the blocking plate 102 corresponds to the front end surface of the sample testing wheel 200 and can limit the outward movement of the sample testing wheel 200, and the blocking plate 102 is pivoted to the front side of the housing 100 and can rotate around a pivoting shaft. Therefore, when the sample testing wheel 200 needs to be disassembled, the baffle plate 102 can be rotated to leave the front end surface of the sample testing wheel 200, so that the sample testing wheel 200 is not limited, and the asphalt mixture sample can be conveniently filled after the sample testing wheel 200 is disassembled; when the sample testing wheel 200 is installed, the stop piece 102 can be rotated to re-limit the front end surface of the sample testing wheel 200, thereby preventing the sample testing wheel 200 from leaving the housing 100 during high-speed rotation.
As a further addition and improvement to this embodiment, as shown in fig. 1, a water tank 103 is attached to the upper side of the housing 100, a flexible tube 104 is connected to the lower side of the water tank 103, and a nozzle 105 is attached to the end of the flexible tube 104. When the anti-skid performance test of the wet asphalt pavement needs to be simulated, before the motor is started, a worker can control the flexible pipe 104 to move downwards, open the nozzle 105 to spray water towards the asphalt mixture on the sample testing wheel 200, so that the asphalt mixture is wetted in advance, simulate the wet and slippery asphalt pavement, then start the motor, measure a series of data, and further obtain the anti-skid performance of the wet asphalt pavement.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (4)
1. The device for detecting the skid resistance of the asphalt mixture sample is characterized by comprising a shell (100), wherein a sample testing wheel (200), a contact inductor (300), a hydraulic cylinder (400), a motor bracket (600) and a roller (700) are arranged in the shell (100), an annular groove (201) for paving the asphalt mixture is formed in the inner ring of the sample testing wheel (200), the sample testing wheel (200) is rotatably and movably installed in the shell (100), the hydraulic cylinder (400) and the roller (700) correspond to the sample testing wheel (200), a piston rod (401) of the hydraulic cylinder (400) is connected with the motor bracket (600), the motor is fixed on the motor bracket (600), the roller (700) is in transmission connection with the motor, and the roller (700) can touch the surface of the asphalt mixture on the annular groove (201) along with the extension of the piston rod (401), the roller (700) is provided with a braking device, the outer edge of the sample testing wheel (200) is fixedly connected with a shifting sheet (301), the outer end of the shifting sheet (301) is contacted with the contact inductor (300), and the shifting sheet (301) can continuously touch the contact inductor (300) along with the rotation of the sample testing wheel (200).
2. The asphalt mixture sample skid resistance performance detection device according to claim 1, wherein an annular chute (101) is arranged in the housing (100), and the sample testing wheel (200) is detachably fitted and sleeved in the annular chute (101) and can slide relative to the inner wall of the annular chute (101).
3. The asphalt mixture sample skid resistance testing device according to claim 2, wherein a blocking piece (102) is disposed on the housing (100), the blocking piece (102) corresponds to a front end face of the sample testing wheel (200) and can limit the outward movement of the sample testing wheel (200), and the blocking piece (102) is pivoted on the front side of the housing (100) and can rotate around a pivoting shaft.
4. The asphalt mixture sample skid resistance detection device according to claim 3, wherein a water tank (103) is arranged on the upper side of the housing (100), a flexible pipe (104) is communicated with the lower side of the water tank (103), and a nozzle (105) is arranged at the tail end of the flexible pipe (104).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922270056.XU CN211206199U (en) | 2019-12-17 | 2019-12-17 | Asphalt mixture sample skid resistance detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922270056.XU CN211206199U (en) | 2019-12-17 | 2019-12-17 | Asphalt mixture sample skid resistance detection device |
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| CN211206199U true CN211206199U (en) | 2020-08-07 |
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| CN201922270056.XU Active CN211206199U (en) | 2019-12-17 | 2019-12-17 | Asphalt mixture sample skid resistance detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115060647A (en) * | 2022-08-19 | 2022-09-16 | 北京建筑大学 | Accumulated water pavement anti-skid performance evaluation method and system |
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2019
- 2019-12-17 CN CN201922270056.XU patent/CN211206199U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115060647A (en) * | 2022-08-19 | 2022-09-16 | 北京建筑大学 | Accumulated water pavement anti-skid performance evaluation method and system |
| CN115060647B (en) * | 2022-08-19 | 2022-11-15 | 北京建筑大学 | Accumulated water pavement anti-skid performance evaluation method and system |
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