CN210834597U - Asphalt pavement surface texture drainage performance testing device - Google Patents
Asphalt pavement surface texture drainage performance testing device Download PDFInfo
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- CN210834597U CN210834597U CN201921712001.3U CN201921712001U CN210834597U CN 210834597 U CN210834597 U CN 210834597U CN 201921712001 U CN201921712001 U CN 201921712001U CN 210834597 U CN210834597 U CN 210834597U
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Abstract
The utility model discloses a device for testing the surface texture drainage performance of an asphalt pavement, which comprises a guide pipe, an annular plate, an annular silica gel sheet, a bearing platform, a water supply device and a timing device; the lower end of the guide pipe is provided with a horn-shaped connecting part; the bearing platform is arranged in the guide pipe, matched with the inner wall of the guide pipe and capable of sliding up and down along the inner part of the guide pipe; the timing device is arranged outside the guide tube and is used for recording the time when the bearing platform reaches a predefined second position from a predefined first position along the inner wall of the guide tube. The utility model discloses a testing arrangement can be used to the accurate drainage performance who measures bituminous paving surface texture level to.
Description
Technical Field
The utility model relates to a drainage capability test device specifically is a bituminous paving surface texture drainage capability test device.
Background
The presence of water accumulated on the road surface increases the risk of water drift during high speed driving of the vehicle. Therefore, when the road line shape is designed, the problem of combination of the transverse slope and the longitudinal slope needs to be considered, but in some ultrahigh transition sections with the plane line shape of S shape, the condition that the transverse slope is smaller than the drainage gradient and the rainwater cannot be drained quickly still occurs. When a vehicle is driven on a road surface, the pressure of the wheels can force water in the front and on both sides to be discharged out of the wheel ground contact area in a manner of overflowing or flowing from the road surface texture, and the road surface texture is extremely important for water discharge in the process.
At present, the existing pavement drainage test device is mainly used for paying attention to the speed of water longitudinally permeating along the inner gap of a pavement surface material and cannot reflect the horizontal drainage performance of the pavement surface texture.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome not enough among the above-mentioned prior art, provide a bituminous paving surface texture drainage performance testing arrangement, it can be used to test road surface texture drainage performance.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a bituminous paving surface texture drainage capability test device which characterized in that: the device comprises a guide pipe, an annular plate, an annular silica gel sheet, a bearing platform, a water supply device and a timing device;
the guide pipe is vertically arranged, a water outlet and a water inlet are formed in the side wall of the guide pipe, and the height from the water inlet to the bottom of the guide pipe is greater than that from the water outlet to the bottom of the guide pipe;
the lower end of the guide pipe is provided with a horn-shaped connecting part;
the inner circle of the annular plate is connected with the outer circle of the lower end of the connecting part, the annular silicon sheet is arranged at the lower part of the annular plate, the inner circle radius of the annular silicon sheet is larger than that of the annular plate, and the inner circle radius of the annular silicon sheet is smaller than the inner diameter of the guide pipe;
the bearing platform is arranged in the guide pipe, matched with the inner wall of the guide pipe and capable of sliding up and down along the inner part of the guide pipe;
the water supply device is connected with the water inlet and can continuously provide water required by the experiment in the guide pipe and control the water supply device to stop supplying water in the guide pipe;
the timing device is arranged outside the guide tube and is used for recording the time when the load-bearing platform reaches a predefined second position from a predefined first position along the inner wall of the guide tube.
The device for testing the drainage performance of the surface texture of the asphalt pavement is characterized in that: the water supply device comprises a water supply tank, a water supply pipe and a water supply control valve, the water supply tank is communicated with the water inlet through the water supply pipe, and the water supply control valve is arranged on the water supply pipe;
the water supply tank is arranged on the outer side of the guide pipe, the height from the bottom of the water supply tank to the bottom of the guide pipe is larger than the height from the water inlet to the bottom of the guide pipe, and the height from the water supply tank to the bottom of the guide pipe is adjustable.
The device for testing the drainage performance of the surface texture of the asphalt pavement is characterized in that: the timing device comprises a first laser generator, a second laser generator, a first laser detector, a second laser detector, a timer and a controller, wherein the first laser generator is arranged on one side outside the guide pipe and positioned on the outer side of the predefined first position, the first laser detector is arranged on the other side outside the guide pipe and used for receiving laser emitted by the first laser generator, the second laser generator is arranged on one side outside the guide pipe and positioned on the outer side of the predefined second position, the second laser detector is arranged on the other side outside the guide pipe and used for receiving laser emitted by the second laser generator, the first laser detector is electrically connected with the controller and used for sending a signal to the controller when the first laser detector can detect laser and cannot detect laser or when the first laser detector cannot detect laser and can detect laser, the second laser detector is electrically connected with the controller and used for sending a signal to the controller when the second laser detector detects the laser from the time when the laser is not detected to the time when the laser is not detected or from the time when the laser is not detected to the time when the laser is detected, and the controller is electrically connected with the timer and used for controlling the timer to start timing and stop timing and reading the time length from the start of timing to the end of timing.
The device for testing the drainage performance of the surface texture of the asphalt pavement is characterized in that: the controller is electrically connected with the water supply control valve and is used for controlling the water supply control valve to open or cut off the water supply pipe.
The device for testing the drainage performance of the surface texture of the asphalt pavement is characterized in that: the height of the first laser generator from the bottom of the guide pipe is smaller than that of the water outlet from the bottom of the guide pipe, and the height of the second laser generator from the bottom of the guide pipe is smaller than that of the first laser generator from the bottom of the guide pipe.
The device for testing the drainage performance of the surface texture of the asphalt pavement is characterized in that: first laser generator and second laser generator set up in the same one side of stand pipe and first laser generator and second laser generator all can adjust apart from the height of stand pipe.
The device for testing the drainage performance of the surface texture of the asphalt pavement is characterized in that: the bearing platform comprises a base, a vertical rod and a weight, wherein the base is horizontally arranged, the vertical rod is arranged above the middle of the base, the lower end of the vertical rod is fixedly connected with the base, and the weight is of an annular structure and sleeved on the vertical rod.
The device for testing the drainage performance of the surface texture of the asphalt pavement is characterized in that: asphalt pavement surface texture drainage capability test device still includes the relief valve, a plurality of high different release valve openings have still been seted up on the lateral wall of stand pipe, highly be the height of release valve hole apart from the stand pipe bottom, the distance apart from the stand pipe bottom of a release valve hole height minimum in a plurality of release valve openings is greater than the height of delivery port apart from the stand pipe bottom, the one end of relief valve is passed the inside that the release valve opening stretched into the stand pipe and is used for blockking the bearing platform and slides downwards along the lateral wall of stand pipe.
The device for testing the drainage performance of the surface texture of the asphalt pavement is characterized in that: the asphalt pavement surface texture drainage performance testing device further comprises a water receiving tank, and the water receiving tank is arranged on the outer side of the guide pipe.
The device for testing the drainage performance of the surface texture of the asphalt pavement is characterized in that: the guide pipe also comprises a drain pipe used for controlling the water level in the guide pipe and draining redundant water in the guide pipe, one end of the drain pipe is communicated with the water outlet, the other end of the drain pipe is positioned on the upper part of the water receiving tank, and scale marks used for indicating the height are carved on the guide pipe.
Compared with the prior art, the utility model has the following advantage:
1. the utility model discloses can be used to test road surface texture drainage performance, the analog degree is high.
2. The utility model discloses an annular silica gel piece, its attached performance is good, can hug closely the road surface, prevents to produce the overflow from the water that the stand pipe connecting portion flowed because of pressure is big, has guaranteed that the water that flows from the stand pipe connecting portion flows to flowing along bituminous paving surface texture level, is favorable to the device to reflect the drainage performance of bituminous paving surface texture level to.
3. The utility model discloses a first laser generator, second laser generator, first laser detector, second laser detector and time-recorder come to measure the time that the bearing platform reaches predefined second position along the stand pipe inner wall from predefined primary importance, time measuring accuracy more, reliable. Visual errors, action delay and the like in artificial time measurement are avoided.
4. The utility model discloses suit weight changes the weight of bearing platform on the montant, and then does the test of road surface texture drainage performance under the different water pressures.
5. The utility model discloses be provided with the scale mark on the outer wall of stand pipe and conveniently observe the water level, adjust the position of first laser generator and second laser generator, confirm the displacement.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic block diagram of the electrical appliance of the present invention.
Fig. 3 is a schematic view of the installation position relationship of the guiding tube, the annular plate and the annular silica gel sheet of the present invention.
Description of reference numerals:
1-a guide tube; 1-water outlet; 1-2-water inlet;
1-3-linker; 1-4-relief valve orifice; 1-5-a drain pipe;
1-6-scale mark; 2-a ring plate; 3-ring-shaped silica gel sheet;
4-a load-bearing platform; 4-1-base; 4-2-vertical bar;
4-3-weight; 5-a water supply device; 5-1-a water supply tank;
5-2-water supply pipe; 5-3-water supply control valve; 6-a timing device;
6-1 — a first laser generator; 6-2-a second laser generator; 6-3 — a first laser detector;
6-4 — a second laser detector; 6-5-timer; 6-controller;
7-a relief valve; 8-water receiving tank.
Detailed Description
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict, and the present invention will be described in detail with reference to the accompanying drawings and embodiments.
In order to make the technical solution of the present invention better understood, the following description is made for clear and complete description of the technical solution in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances for purposes of describing the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
As shown in fig. 1 to 3, the present embodiment discloses a device for testing drainage performance of surface texture of asphalt pavement, which includes a guide pipe 1, an annular plate 2, an annular silicon sheet 3, a bearing platform 4, a water supply device 5 and a timing device 6.
The guide pipe 1 is vertically arranged, a water outlet 1-1 and a water inlet 1-2 are formed in the side wall of the guide pipe 1, and the distance between the water inlet 1-2 and the bottom of the guide pipe 1 is larger than the distance between the water outlet 1-1 and the bottom of the guide pipe 1.
The lower end of the guide pipe 1 is provided with a trumpet-shaped connecting part 1-3.
The inner circle of the annular plate 2 is connected with the outer circle of the lower end of the connecting portion 1-3, the annular silicon sheet 3 is arranged on the lower portion of the annular plate 2, the inner circle radius of the annular silicon sheet 3 is larger than that of the annular plate 2, the inner circle radius of the annular silicon sheet 3 is smaller than the inner diameter of the guide tube 1, and when the connecting portion (1-3) and the inner circle of the annular silicon sheet (3) are concentric, the guide tube 1 can be placed on the annular silicon sheet 3.
The bearing platform 4 is arranged in the guide pipe 1, matched with the inner wall of the guide pipe 1 and capable of sliding up and down along the inner part of the guide pipe 1.
In this embodiment, the inner diameter of the guide tube 1 is circular, and the base of the bearing platform 4 is also a disc-shaped structure matched with the inner diameter of the guide tube 1.
The water supply device 5 is connected with the water inlet 1-2 and can continuously provide water required by experiments in the guide pipe 1 and control the water supply device 5 to stop supplying water in the guide pipe 1.
The timing device 6 is arranged outside the guide tube 1 and is used to record the time when the load-bearing platform 4 reaches a predefined second position along the inner wall of the guide tube 1 from a predefined first position.
The drainage performance of the pavement texture is related to the water pressure, the drainage quantity and the drainage time. Under the condition of certain water pressure and certain water discharge, the drainage time can be used for representing the difficulty of water discharge along the surface texture of the pavement, namely the drainage performance of the surface texture. In this embodiment, a constant force is applied to the water in the guide pipe 1 by the gravity of the load-bearing platform 4 itself to generate a constant water pressure, the amount of water to be drained can be obtained by the first position, the second position and the inner diameter of the guide pipe 1, and the time taken for the load-bearing platform 4 to reach the predefined second position along the inner wall of the guide pipe 1 from the predefined first position can be used for representing the drainage performance of the road texture by the timing device 6.
The embodiment is also provided with the annular silica gel sheet 3, the annular silica gel sheet 3 can be tightly attached to the pavement, the water flowing out of the connecting part 1-3 of the guide pipe 1 is prevented from generating overflow flow due to large pressure, the water flowing out of the connecting part 1-3 of the guide pipe 1 is ensured to flow out along the surface texture of the asphalt pavement horizontally, and the device is favorable for reflecting the horizontal drainage performance of the surface texture of the asphalt pavement. Meanwhile, the annular plate 2 is further arranged in the application, the annular plate 2 is pressed on the annular silica gel sheet 3 through the gravity of the annular plate 2, and the annular silica gel sheet 3 can be attached to the road surface as far as possible. The annular plate 2 may be made of a dense metal material such as iron, stainless steel, etc.
As shown in fig. 1, the water supply device 5 includes a water supply tank 5-1, a water supply pipe 5-2, and a water supply control valve 5-3, the water supply tank 5-1 is communicated with the water inlet 1-2 through the water supply pipe 5-2, and the water supply control valve 5-3 is provided on the water supply pipe 5-2.
The water supply tank 5-1 is arranged on the outer side of the guide pipe 1, the height from the bottom of the water supply tank 5-1 to the bottom of the guide pipe 1 is larger than the height from the water inlet 1-2 to the bottom of the guide pipe 1, and the height from the water supply tank 5-1 to the bottom of the guide pipe 1 is adjustable.
In this embodiment, the water supply tank 5-1 is disposed on a support frame, the support frame is disposed on the ground, and the height of the water supply tank 5-1 from the ground is adjusted by adjusting the position of the water supply tank 5-1 on the support frame or by adjusting the support frame. The height difference between the connector of the water supply pipe 5-2 at the bottom of the water supply tank 5-1 and the water inlet 1-2 can be changed by adjusting the height from the water supply tank 5-1 to the ground, so that the water supply pressure can be adjusted by adjusting the height from the water supply tank 5-1 to the ground, under the condition that the diameter of the water supply pipe is not changed, the water supply flow corresponding to the increased water supply pressure can be increased, and the requirements of the water supply performance of different drainage road surfaces are met.
As shown in fig. 1 and 2, the timing device 6 includes a first laser generator 6-1, a second laser generator 6-2, a first laser detector 6-3, a second laser detector 6-4, a timer 6-5 and a controller 6-6, the first laser generator 6-1 is disposed at one side outside the guide tube 1 and outside the predefined first position, the first laser detector 6-3 is disposed at the other side outside the guide tube 1 and is used for receiving the laser emitted by the first laser generator 6-1, the second laser generator 6-2 is disposed at one side outside the guide tube 1 and outside the predefined second position, the second laser detector 6-4 is disposed at the other side outside the guide tube 1 and is used for receiving the laser emitted by the second laser generator 6-2, the first laser detector 6-3 is electrically connected with the controller 6-6 and is used for sending a signal to the controller 6-6 when the first laser detector detects no laser light or detects no laser light until the first laser detector detects laser light, the second laser detector 6-4 is electrically connected with the controller 6-6 and is used for sending a signal to the controller 6-6 when the second laser detector detects no laser light or detects no laser light until the second laser detector detects laser light, and the controller 6-6 is electrically connected with the timer 6-5 and is used for controlling the timer 6-5 to start timing and stop timing and reading the time length from the start of timing to the end of timing.
In this embodiment, the first position and the second position are two positions artificially defined according to experimental requirements, and the volume of water in the guide pipe 1 between the first position and the second position can be calculated by the first position, the second position and the inner diameter of the guide pipe 1, so as to calculate the displacement.
In the embodiment, the time for the load-bearing platform 4 to reach the predefined second position from the predefined first position along the inner wall of the guide pipe 1 is measured through the first laser generator 6-1, the second laser generator 6-2, the first laser detector 6-3, the second laser detector 6-4 and the timer 6-5, so that the time measurement is more accurate and reliable. Visual errors, action delay and the like in artificial time measurement are avoided.
As shown in fig. 2, the controller 6-6 is electrically connected to the water supply control valve 5-3 and is used to control the water supply control valve 5-3 to open or close the water supply pipe 5-2.
The water supply control valves 5-3 in this embodiment are solenoid-operated valves that can be controlled by the controllers 6-6. The water supply control valve 5-3 passes through the controller 6-6, so that the testing device is more convenient and faster to use.
The controller 6-6 in this embodiment may be a programmable logic controller PLC, and the timer 6-5 is an internal timer inside the programmable logic controller PLC.
As shown in FIG. 1, the height of the first laser generator 6-1 from the bottom of the guide pipe 1 is less than the height of the water outlet 1-1 from the bottom of the guide pipe 1, and the height of the second laser generator 6-2 from the bottom of the guide pipe 1 is less than the height of the first laser generator 6-1 from the bottom of the guide pipe 1.
As shown in FIG. 1, the first laser generator 6-1 and the second laser generator 6-2 are disposed on the same side of the guide tube 1 and the heights of the first laser generator 6-1 and the second laser generator 6-2 from the guide tube 1 are adjustable.
In this embodiment, the first laser generator 6-1, the second laser generator 6-2, the first laser detector 6-3 and the second laser detector 6-4 are all arranged on the fixed support and the positions of the first laser generator 6-1, the second laser generator 6-2, the first laser detector 6-3 and the second laser detector 6-4 on the support or the height of the fixed support can be adjusted respectively, so that the selection of the predefined first position and the predefined second position is facilitated, and the amount of water to be discharged can be changed by changing the height difference between the first laser generator 6-1 and the second laser generator 6-2.
As shown in fig. 1, the bearing platform 4 comprises a base 4-1, a vertical rod 4-2 and a weight 4-3, the base 4-1 is horizontally arranged, the vertical rod 4-2 is vertically arranged above the middle of the base 4-1, the lower end of the vertical rod 4-2 is fixedly connected with the base 4-1, and the weight 4-3 is of an annular structure and is sleeved on the vertical rod 4-2.
In the embodiment, the weight of the bearing platform 4 can be changed by sleeving the weights 4-3 on the vertical rods 4-2, so that the test of the drainage performance of the pavement texture under different water pressures can be performed.
As shown in fig. 1, the asphalt pavement surface texture drainage performance testing device further comprises a release valve 7, a plurality of release valve holes 1-4 with different heights are further formed in the side wall of the guide pipe 1, the height is the height from the release valve holes 1-4 to the bottom of the guide pipe 1, the distance from one release valve hole 1-4 with the smallest height from the bottom of the guide pipe 1 among the plurality of release valve holes 1-4 to the bottom of the guide pipe 1 is greater than the height from the water outlet 1-1 to the bottom of the guide pipe 1, and one end of the release valve 7 penetrates through the release valve holes 1-4 to extend into the guide pipe 1 and is used for blocking the load-bearing platform 4 from sliding downwards along the side wall of the guide pipe 1.
As shown in fig. 1, the asphalt pavement surface texture drainage performance testing device further includes a water receiving tank 8, and the water receiving tank 8 is disposed outside the guide pipe 1.
As shown in fig. 1, the guide pipe 1 further comprises a drain pipe 1-5 for controlling the water level in the guide pipe 1 and draining excess water in the guide pipe 1, one end of the drain pipe 1-5 is communicated with the water outlet 1-1, the other end of the drain pipe 1-5 is positioned at the upper part of the water receiving tank 8, and scale marks 1-6 for indicating the height are marked on the guide pipe 1.
The use method and the working principle of the device for testing the drainage performance of the surface texture of the asphalt pavement in the embodiment are as follows: when the device is used, the whole device is placed on a tested road surface, the water supply control valve 5-3 is closed, water required by an experiment is injected into the water supply water tank 5-1, the height of the water supply water tank 5-1 is adjusted, and the water supply flow is ensured; the method comprises the steps of setting a first laser generator 6-1, a second laser generator 6-2, a first laser detector 6-3 and a second laser detector 6-4, detecting whether the first laser generator 6-1, the second laser generator 6-2, the first laser detector 6-3 and the second laser detector 6-4 work normally or not, inserting a release valve 7 into a corresponding release valve hole 1-4 according to experiment requirements, and enabling one end of the release valve 7 to extend into the guide pipe 1. And weights 4-3 with mass required by the experiment are added on the bearing platform 4. And opening the water supply control valve 5-3, injecting water into the guide pipe 1 by the water supply tank 5-1, discharging part of water from the road texture along the lower part of the annular silicon sheet 3, and discharging part of water from the water outlet 1-1 into the water receiving tank 8, so that the water surface is always kept at the position of the water outlet 1-1.
The release valve 7 is pulled out, the water supply control valves 5-3 are closed, the bearing platform 4 slides downwards along the inner wall of the guide pipe 1 in a free falling mode under the action of gravity, the lower surface of the bearing platform 4 impacts the water surface and generates pressure on the water surface through the self weight, water in the guide pipe 1 is discharged along the texture of the road surface, and the water surface and the bearing platform 4 descend simultaneously; when the bearing platform 4 descends to the position of the first laser generator 6-1, the bearing platform 4 blocks laser emitted by the first laser generator 6-1, the first laser detector 6-3 cannot detect the laser at the moment, the first laser detector 6-3 sends a blocking signal of the laser to the controller 6-6, and the controller 6-6 controls the timer 6-5 to start timing. The water surface and the bearing platform 4 continue to descend, when the bearing platform 4 descends to the second laser generator 6-2, the bearing platform 4 blocks laser emitted by the second laser generator 6-2, the second laser detector 6-4 cannot detect the laser at the moment, the second laser detector 6-4 sends a blocking signal of the laser to the controller 6-6, and the controller 6-6 controls the timer 6-5 to stop timing and outputs the time length from the start of timing to the stop of timing. According to the obtained duration, the volume of the drained water in the duration can be obtained through calculation through the scale marks 1-6 on the guide pipe 1 and the inner diameter of the guide pipe 1. And the drainage performance of the surface texture of the asphalt pavement in the horizontal direction can be judged and calibrated according to the ratio of the volume to the duration. The shorter the time is, the better the drainage performance of the asphalt pavement surface texture in the horizontal direction corresponding to the time is; on the contrary, the horizontal drainage performance of the surface texture of the asphalt pavement corresponding to the time is the worst.
At the moment when the bearing platform 4 contacts with the water surface, impact force is applied to the water body, and after the water at the bottom of the guide pipe 1 is subjected to pressure, the water is forced to flow to the outside along the road surface texture so as to dissipate the internal pressure. The impact force and the pressure brought to the water surface by the fact that the wheels roll the water surface can be well and closely simulated. The ease with which water is drained along the surface texture determines how quickly the load bearing platform descends, given the same impact force. The time it takes for the load bearing platform to descend from the first laser generator 6-1 to the second laser generator 6-2 represents the drainage capacity of the road texture.
Because in reality, often the road surface of being surveyed is the unevenness, has the slope or the height is undulant, even have annular silica gel piece 3 also hardly guarantee the contact condition of annular silica gel piece 3 and ground when annular silica gel piece 3 and ground area of contact are very big, this can make the test result receive road surface unevenness's such as rut influence too big. Therefore, the difference between the inner and outer circles of the silicone sheet is generally set between 5cm and 20 cm. Generally, within a width of 30cm, the difference of the road texture on the cross section of the lane is small, and considering that the middle guide pipe 1 has a certain width, the difference between the inner circle and the outer circle of the silicone sheet is preferably 10 cm.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and equivalent structure transform that the above embodiment was done the utility model discloses technical scheme's within the scope of protection.
Claims (10)
1. The utility model provides a bituminous paving surface texture drainage capability test device which characterized in that: comprises a guide pipe (1), an annular plate (2), an annular silica gel sheet (3), a bearing platform (4), a water supply device (5) and a timing device (6);
the guide pipe (1) is vertically arranged, a water outlet (1-1) and a water inlet (1-2) are formed in the side wall of the guide pipe (1), and the height from the water inlet (1-2) to the bottom of the guide pipe (1) is larger than the height from the water outlet (1-1) to the bottom of the guide pipe (1);
the lower end of the guide pipe (1) is provided with a horn-shaped connecting part (1-3);
the inner circle of the annular plate (2) is connected with the outer circle of the lower end of the connecting part (1-3), the annular silica gel sheet (3) is arranged at the lower part of the annular plate (2), the inner circle radius of the annular silica gel sheet (3) is larger than that of the annular plate (2), and the inner circle radius of the annular silica gel sheet (3) is smaller than the inner diameter of the guide pipe (1);
the bearing platform (4) is arranged in the guide pipe (1), is matched with the inner wall of the guide pipe (1) and can slide up and down along the inner part of the guide pipe (1);
the water supply device (5) is connected with the water inlet (1-2) and can continuously provide water required by experiments in the guide pipe (1) and control the water supply device (5) to stop supplying water in the guide pipe (1);
the timing device (6) is arranged outside the guide tube (1) and is used for recording the time when the load-bearing platform (4) reaches a predefined second position from a predefined first position along the inner wall of the guide tube (1).
2. The asphalt pavement surface texture drainage performance testing device according to claim 1, characterized in that: the water supply device (5) comprises a water supply tank (5-1), a water supply pipe (5-2) and a water supply control valve (5-3), the water supply tank (5-1) is communicated with the water inlet (1-2) through the water supply pipe (5-2), and the water supply control valve (5-3) is arranged on the water supply pipe (5-2);
the water supply tank (5-1) is arranged on the outer side of the guide pipe (1), the height from the bottom of the water supply tank (5-1) to the bottom of the guide pipe (1) is larger than the height from the water inlet (1-2) to the bottom of the guide pipe (1), and the height from the water supply tank (5-1) to the bottom of the guide pipe (1) is adjustable.
3. The asphalt pavement surface texture drainage performance testing device according to claim 1, characterized in that: the timing device (6) comprises a first laser generator (6-1), a second laser generator (6-2), a first laser detector (6-3), a second laser detector (6-4), a timer (6-5) and a controller (6-6), wherein the first laser generator (6-1) is arranged on one side outside the guide pipe (1) and located on the outer side of the predefined first position, the first laser detector (6-3) is arranged on the other side outside the guide pipe (1) and used for receiving laser emitted by the first laser generator (6-1), the second laser generator (6-2) is arranged on one side outside the guide pipe (1) and located on the outer side of the predefined second position, and the second laser detector (6-4) is arranged on the other side outside the guide pipe (1) and used for receiving the second laser generator (6-2) The laser emitting device comprises a first laser detector (6-3), a second laser detector (6-4), a timer (6-5) and a controller (6-6), wherein the first laser detector (6-3) is electrically connected with the controller (6-6) and used for sending a signal to the controller (6-6) when the first laser detector detects laser light to detect laser light or when the second laser detector detects laser light to detect laser light, the second laser detector (6-4) is electrically connected with the controller (6-6) and used for sending a signal to the controller (6-6) when the second laser detector detects laser light to detect laser light, and the controller (6-6) is electrically connected with the timer (6-5) and used for controlling the timer (6-5) to start timing and stop timing and reading the time length from the start of timing to the end of timing.
4. The asphalt pavement surface texture drainage performance testing device according to claim 3, characterized in that: the controller (6-6) is electrically connected with the water supply control valve (5-3) and is used for controlling the water supply control valve (5-3) to open or cut off the water supply pipe (5-2).
5. The asphalt pavement surface texture drainage performance testing device according to claim 4, characterized in that: the height of the first laser generator (6-1) from the bottom of the guide pipe (1) is smaller than the height of the water outlet (1-1) from the bottom of the guide pipe (1), and the height of the second laser generator (6-2) from the bottom of the guide pipe (1) is smaller than the height of the first laser generator (6-1) from the bottom of the guide pipe (1).
6. The asphalt pavement surface texture drainage performance testing device according to claim 5, characterized in that: the first laser generator (6-1) and the second laser generator (6-2) are arranged on the same side of the guide pipe (1), and the heights of the first laser generator (6-1) and the second laser generator (6-2) from the guide pipe (1) can be adjusted.
7. The asphalt pavement surface texture drainage performance testing device according to claim 6, characterized in that: the bearing platform (4) comprises a base (4-1), a vertical rod (4-2) and weights (4-3), the base (4-1) is horizontally arranged, the vertical rod (4-2) is vertically arranged above the middle of the base (4-1), the lower end of the vertical rod (4-2) is fixedly connected with the base (4-1), and the weights (4-3) are of an annular structure and are sleeved on the vertical rod (4-2).
8. The asphalt pavement surface texture drainage performance testing device according to claim 7, characterized in that: the asphalt pavement surface texture drainage performance testing device further comprises a release valve (7), a plurality of release valve holes (1-4) with different heights are further formed in the side wall of the guide pipe (1), the height is the height of the release valve holes (1-4) from the bottom of the guide pipe (1), the distance between one release valve hole (1-4) with the minimum height from the bottom of the guide pipe (1) in the plurality of release valve holes (1-4) and the bottom of the guide pipe (1) is larger than the height between the water outlet (1-1) and the bottom of the guide pipe (1), and one end of the release valve (7) penetrates through the release valve holes (1-4) to stretch into the inside of the guide pipe (1) and is used for blocking the bearing platform (4) to slide downwards along the side wall of the guide pipe (1).
9. The asphalt pavement surface texture drainage performance testing device according to claim 6, characterized in that: the asphalt pavement surface texture drainage performance testing device further comprises a water receiving tank (8), and the water receiving tank (8) is arranged on the outer side of the guide pipe (1).
10. The asphalt pavement surface texture drainage performance testing device according to claim 9, characterized in that: the guide pipe (1) further comprises drain pipes (1-5) used for controlling the water level in the guide pipe (1) and draining redundant water in the guide pipe (1), one ends of the drain pipes (1-5) are communicated with the water outlet (1-1), the other ends of the drain pipes (1-5) are located on the upper portion of the water receiving groove (8), and scale marks (1-6) used for indicating the height are carved on the guide pipe (1).
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| CN110579434A (en) * | 2019-10-12 | 2019-12-17 | 长安大学 | Asphalt pavement surface texture drainage performance testing device |
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