Asphalt pavement drainage performance testing device

Abstract

The utility model discloses an asphalt pavement drainage performance testing device in the technical field of asphalt pavement performance detection, which comprises a bottom plate, a box body is fixedly connected to the left side of the top of the bottom plate, a box door is hinged to the left side of the front of the box body, and a discharge pipeline is arranged at the bottom of the right side of the box body. A filtering mechanism is inserted into the left side of the top of the discharging pipeline, a limiting mechanism is arranged on the right side of the top of the discharging pipeline, a water pump is fixedly connected to the right side of the top of the bottom plate, the right side of the discharging pipeline is connected with the water pump, and a connecting pipeline is arranged on the top of the water pump; the utility model solves the problems that after water is sprayed to the asphalt pavement test piece, part of fine sand and gravel on the asphalt pavement test piece are easy to fall off, after the device is used, the sprayed water is transported into the water tank without being filtered, the fine sand and gravel in the water are easy to block the spray head, and the subsequent test is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt road performance detection, in particular to a device for testing the drainage performance of asphalt pavement. Background Art

[0002] Asphalt concrete pavements have been widely used in China due to their advantages such as comfortable driving and convenient maintenance. However, a large amount of usage experience shows that some asphalt pavements are damaged to varying degrees within the designed service life. Among them, the reduction of pavement material strength caused by water and pavement potholes are very typical disease forms. For the high-fill subgrades currently adopted in the design of expressways in China, the influence of groundwater on the subgrade pavement structure is relatively small, while surface precipitation is the main cause of the above diseases. In order to avoid or delay the occurrence of various types of water damage caused by surface precipitation to the greatest extent, in addition to reasonably designing the drainage system of the subgrade pavement structure, evaluating the water permeability performance of the surface asphalt mixture is also an important technical measure.

[0003] For example, an asphalt pavement water permeability performance testing device with the publication number of CN213422936U includes a testing box installed at the upper end of a base, an installation frame installed at the upper right end of the base, a water tank installed on the installation frame, a partition frame installed inside the testing box, an upper sealing cover installed at the upper end of the testing box, a drain pipe connected to the lower left end of the testing box, a water pump connected to the drain pipe, the water outlet pipe of the water pump connected to the upper left end of the water tank, a connecting pipe connected to the lower left end of the water tank, a control valve connected to the connecting pipe, the connecting pipe connected to the upper sealing cover, and the bottom of the connecting pipe connected to a nozzle. An air pump is installed on the side wall of the water tank, the air outlet pipe of the air pump is connected to the upper sealing cover, an air valve is installed on the air outlet pipe, and a pressure gauge is installed on the upper sealing cover; the utility model can achieve rapid detection, has high stability, is convenient to operate, and can save time at the same time; has a simple structure, improves efficiency, is easy to use, and the test is fast.

[0004] However, after spraying water onto the asphalt road specimen, some fine sand and gravel on the asphalt road specimen are likely to fall off. After the above device is used, the water after spraying is transported into the water tank without filtering, and the fine sand and gravel in the water are likely to block the nozzle, affecting the subsequent test. Summary of the Utility Model

[0005] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract and the name of the utility model of the present application, to avoid obscuring the purpose of this part, the abstract, and the name of the utility model. Such simplifications or omissions shall not be used to limit the scope of the utility model.

[0006] Therefore, the purpose of the present utility model is to provide a device for testing the drainage performance of asphalt pavements, which can solve the problems that after water is sprayed onto the asphalt pavement specimens, some fine sand and gravel on the asphalt pavement specimens are likely to fall off, and after the above device is used, the water after spraying is transported into the water tank without filtering, and the fine sand and gravel in the water are likely to block the nozzles, affecting subsequent tests.

[0007] To solve the above technical problems, the present utility model provides a device for testing the drainage performance of asphalt pavements, adopting the following technical solutions: including a bottom plate, a box body is fixedly connected to the left side of the top of the bottom plate, a box door is hinged to the front left side of the box body, a discharge pipe is arranged at the bottom right side of the box body, a filtering mechanism is inserted into the top left side of the discharge pipe, a limiting mechanism is arranged at the top right side of the discharge pipe, a water pump is fixedly connected to the right side of the top of the bottom plate, the right side of the discharge pipe is connected to the water pump, a connecting pipe is arranged at the top of the water pump, a support plate is fixedly connected to the back of the box body, a water tank is fixedly connected to the front top of the support plate, the top left side of the connecting pipe is communicated with the water tank, a water spraying pipe is communicated with the bottom of the water tank, a timer is arranged in front of the water tank, an air pump is fixedly connected to the left side of the water tank, an air inlet pipe is arranged at the bottom of the air pump, and the bottom of the air inlet pipe is communicated with the box body;

[0008] The filtering mechanism includes a filtering frame, a filter screen is arranged on the inner wall of the filtering frame, a top plate is fixedly connected to the top of the filter screen, sealing gaskets are fixedly connected to both the left and right sides of the top plate, and a pulling plate is fixedly connected to the top of the top plate.

[0009] Optionally, a fixing plate is arranged in the inner cavity of the box body, and a water changing hole is opened on the fixing plate.

[0010] By adopting the above technical solution, the asphalt pavement specimens are supported.

[0011] Optionally, a water spraying valve is arranged on the water spraying pipe, the bottom of the water spraying pipe extends into the inner cavity of the box body, and a nozzle is arranged at the bottom of the water spraying pipe.

[0012] By adopting the above technical solution, water is sprayed onto the asphalt pavement specimens.

[0013] Optionally, an air inlet valve is arranged on the air inlet pipe, and a pressure gauge is arranged on the top left side of the box body.

[0014] By adopting the above technical solution, the inside of the box body is pressurized.

[0015] Optionally, an installation opening is opened at the top of the discharge pipe, and the top plate is inserted into the installation opening.

[0016] By adopting the above technical solution, the filtering mechanism is installed.

[0017] Optionally, the limiting mechanism includes a limiting plate. A limiting rod is inserted into the right side of the limiting plate. A limiting hole adapted to the limiting rod is formed in the limiting plate. The limiting hole penetrates through the left and right sides of the limiting plate. The limiting rod is slidably connected in the limiting hole. A spring plate is fixedly connected to the left side of the limiting rod. A spring is fixedly connected to the right side of the spring plate. The spring is sleeved outside the limiting rod. A spring groove adapted to the spring is formed in the limiting plate. A left side plate is fixedly connected to the left side of the spring plate. A limiting sliding plate is fixedly connected to the bottom of the left side plate. The limiting sliding plate is slidably connected to the top of the top plate.

[0018] By adopting the above technical solution, the filtering mechanism is limited.

[0019] In summary, the present utility model includes at least one of the following beneficial effects: By providing a filtering mechanism, fine sand and gravel in the water are filtered before the water is transported to the water tank, the nozzle will not be blocked, and subsequent tests will not be affected. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 is a schematic structural diagram of the present utility model;

[0022] Figure 2 is a schematic cross-sectional structural diagram of the present utility model;

[0023] Figure 3 is Figure 2 an enlarged structural diagram of part A in

[0024] Figure 4 is a schematic structural diagram of the filtering mechanism of the present utility model;

[0025] Figure 5 is a schematic structural diagram of the limiting mechanism of the present utility model.

[0026] Description of reference numerals: 1, bottom plate; 2, box body; 201, fixing plate; 202, water change hole; 3, box door; 4, discharge pipe; 401, installation port; 5, filtering mechanism; 501, filtering frame; 502, filter screen; 503, top plate; 504, sealing gasket; 505, pulling plate; 6, limiting mechanism; 601, limiting plate; 602, limiting hole; 603, limiting rod; 604, spring plate; 605, spring; 606, spring groove; 607, left side plate; 608, limiting sliding plate; 7, water pump; 8, connecting pipe; 9, supporting plate; 10, water tank; 11, spraying pipe; 111, nozzle; 12, spraying valve; 13, timer; 14, air pump; 15, intake pipe; 16, intake valve; 17, pressure gauge. Detailed implementation mode

[0027] The following combines the attached Figures 1-5 A further detailed description of the present utility model will be given.

[0028] Example 1, referring to Figures 1-2 , in this embodiment, in order to solve the problem that after spraying water on the asphalt pavement specimen, some fine sand and gravel on the asphalt pavement specimen are likely to fall off easily, and after the above device is used, the water after spraying is transported to the water tank without filtering, and the fine sand and gravel in the water are likely to block the nozzles, affecting the subsequent tests. The present utility model discloses a device for testing the drainage performance of asphalt pavement, including a bottom plate 1, characterized in that: a box body 2 is fixedly connected to the left side of the top of the bottom plate 1, a box door 3 is hinged to the front left side of the box body 2, a discharge pipe 4 is arranged at the bottom right side of the box body 2, a filtering mechanism 5 is inserted into the top left side of the discharge pipe 4, a limiting mechanism 6 is arranged at the top right side of the discharge pipe 4, a water pump 7 is fixedly connected to the right side of the top of the bottom plate 1, the right side of the discharge pipe 4 is connected to the water pump 7, a connecting pipe 8 is arranged at the top of the water pump 7, a supporting plate 9 is fixedly connected to the rear of the box body 2, a water tank 10 is fixedly connected to the top front of the supporting plate 9, the top left side of the connecting pipe 8 is communicated with the water tank 10, a spraying pipe 11 is communicated with the bottom of the water tank 10, a timer 13 is arranged in front of the water tank 10, an air pump 14 is fixedly connected to the left side of the water tank 10, an intake pipe 15 is arranged at the bottom of the air pump 14, and the bottom of the intake pipe 15 is communicated with the box body 2;

[0029] The filtering mechanism 5 includes a filtering frame 501, a filter screen 502 is arranged on the inner wall of the filtering frame 501, a top plate 503 is fixedly connected to the top of the filter screen 502, sealing gaskets 504 are fixedly connected to the left and right sides of the top plate 503, and a pulling plate 505 is fixedly connected to the top of the top plate 503.

[0030] Based on the above features, the working principle of this embodiment is as follows: Open the box door 3 and place the asphalt pavement specimen into the box body 2. The water in the water tank 10 enters the inner cavity of the box body 2 through the water spraying pipeline 11 and is sprayed onto the asphalt pavement specimen. Start the timer 13 to time and test the drainage performance of the asphalt pavement specimen. The water droplets sprayed onto the asphalt pavement specimen fall to the bottom of the inner cavity of the box body 2, and the water at the bottom of the inner cavity of the box body 2 enters the discharge pipeline 4. The water flows through the filter screen 502. The aperture of the filter screen 502 is smaller than the diameters of fine sand and gravel. The fine sand and gravel fall into the filter screen 501. The filtered water is transported into the connecting pipeline 8 through the water pump 7 and then flows into the water tank 10 through the connecting pipeline 8 to complete the filtration of water.

[0031] Embodiment 2. Refer to Figures 2-5 , in this embodiment, in order to solve the problem that after the water is sprayed onto the asphalt pavement specimen, some fine sand and gravel on the asphalt pavement specimen are likely to fall off, and after the above device is used, the water after spraying is transported into the water tank without filtering, and the fine sand and gravel in the water are likely to block the nozzle, affecting the subsequent test. Based on the same concept as Embodiment 1 above, this asphalt pavement drainage performance testing device further includes a fixing plate 201 provided in the inner cavity of the box body 2. A water changing hole 202 is opened on the fixing plate 201. A water spraying valve 12 is provided on the water spraying pipeline 11. The bottom of the water spraying pipeline 11 extends into the inner cavity of the box body 2. A nozzle 111 is provided at the bottom of the water spraying pipeline 11. An air inlet valve 16 is provided on the air inlet pipeline 15. A pressure gauge 17 is provided on the left side of the top of the box body 2. An installation opening 401 is opened at the top of the discharge pipeline 4. The top plate 503 is inserted into the installation opening 401. The limiting mechanism 6 includes a limiting plate 601. A limiting rod 603 is inserted on the right side of the limiting plate 601. A limiting hole 602 adapted to the limiting rod 603 is opened on the limiting plate 601. The limiting hole 602 penetrates through the left and right sides of the limiting plate 601. The limiting rod 603 is slidably connected in the limiting hole 602. A spring plate 604 is fixedly connected to the left side of the limiting rod 603. A spring 605 is fixedly connected to the right side of the spring plate 604. The spring 605 is sleeved on the outer side of the limiting rod 603. A spring groove 606 adapted to the spring 605 is opened in the limiting plate 601. A left side plate 607 is fixedly connected to the left side of the spring plate 604. A limiting sliding plate 608 is fixedly connected to the bottom of the left side plate 607. The limiting sliding plate 608 is slidably connected to the top of the top plate 503.

[0032] Based on the above characteristics, the working principle of this embodiment is as follows: Open the water spraying valve 12, the water in the water tank 10 enters the nozzle 111 through the water spraying pipeline 11, and is sprayed onto the asphalt road specimen through the nozzle 111. The sprayed water flows through the water changing holes 202 formed in the fixing plate 201 and into the bottom of the inner cavity of the box body 2, then enters the discharge pipeline 4, is filtered by the filtering mechanism 5, and is transported back to the water tank 10 by the water pump 7. After use, pull the limiting rod 603 to the right to drive the spring plate 604 to move to the right. While the spring plate 604 squeezes the spring 605, it drives the left side plate 607 to move to the right. The left side plate 607 drives the limiting sliding plate 608 to move to the right, and the limiting sliding plate 608 moves out from the top of the top plate 503, canceling the fixation of the top plate 503. Pull the pulling plate 505 upward to take out the filter frame 501 from the discharge pipeline 4, and clean the fine sand and gravel in the filter frame 501. After cleaning, insert the filter frame 501 back into the discharge pipeline 4, release the limiting rod 603, and the spring plate 604 moves to the left under the action of the elastic force of the spring 605. The spring plate604 drives the left side plate 607 to move to the left, and the left side plate 607 drives the limiting sliding plate 608 to move to the left. The limiting sliding plate 608 moves to the top of the top plate 503 to limit and fix the filter frame 501, completing the cleaning of the filter net 501.

[0033] The above are all the preferred embodiments of the present invention, and the protection scope of the present invention is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. An asphalt pavement drainage performance testing device, comprising a bottom plate (1), characterized in that: On the left side of the top of the bottom plate (1), a box body (2) is fixedly connected. On the left side of the front of the box body (2), a box door (3) is hinged. At the bottom right side of the box body (2), a discharge pipe (4) is provided. On the left side of the top of the discharge pipe (4), a filtering mechanism (5) is inserted. On the right side of the top of the discharge pipe (4), a limiting mechanism (6) is provided. On the right side of the top of the bottom plate (1), a water pump (7) is fixedly connected. The right side of the discharge pipe (4) is connected to the water pump (7). On the top of the water pump (7), a connecting pipe (8) is provided. At the back of the box body (2), a support plate (9) is fixedly connected. On the top of the front of the support plate (9), a water tank (10) is fixedly connected. The left side of the top of the connecting pipe (8) is communicated with the water tank (10). At the bottom of the water tank (10), a water spraying pipe (11) is communicated. In front of the water tank (10), a timer (13) is provided. On the left side of the water tank (10), an air pump (14) is fixedly connected. At the bottom of the air pump (14), an air inlet pipe (15) is provided. The bottom of the air inlet pipe (15) is communicated with the box body (2). The filtering mechanism (5) includes a filtering frame (501). The inner wall of the filtering frame (501) is provided with a filtering net (502). On the top of the filtering net (502), a top plate (503) is fixedly connected. On the left and right sides of the top plate (503), sealing gaskets (504) are fixedly connected. On the top of the top plate (503), a pulling plate (505) is fixedly connected.

2. The asphalt pavement drainage performance testing device according to claim 1, characterized in that: Inside the box body (2), a fixing plate (201) is provided. On the fixing plate (201), a water changing hole (202) is opened.

3. The asphalt pavement drainage performance testing device according to claim 1, characterized in that: On the water spraying pipe (11), a water spraying valve (12) is provided. The bottom of the water spraying pipe (11) extends into the inner cavity of the box body (2). At the bottom of the water spraying pipe (11), a spray head (111) is provided.

4. The asphalt pavement drainage performance testing device according to claim 1, wherein: On the air inlet pipe (15), an air inlet valve (16) is provided. On the left side of the top of the box body (2), a pressure gauge (17) is provided.

5. The asphalt pavement drainage performance testing device according to claim 1, wherein: On the top of the discharge pipe (4), an installation opening (401) is opened. The top plate (503) is inserted into the installation opening (401).

6. The asphalt pavement drainage performance testing device according to claim 1, characterized in that: The limiting mechanism (6) includes a limiting plate (601). A limiting rod (603) is inserted into the right side of the limiting plate (601). A limiting hole (602) adapted to the limiting rod (603) is formed in the limiting plate (601). The limiting hole (602) penetrates through the left and right sides of the limiting plate (601). The limiting rod (603) is slidably connected in the limiting hole (602). A spring plate (604) is fixedly connected to the left side of the limiting rod (603). A spring (605) is fixedly connected to the right side of the spring plate (604). The spring (605) is sleeved on the outer side of the limiting rod (603). A spring groove (606) adapted to the spring (605) is formed in the limiting plate (601). A left side plate (607) is fixedly connected to the left side of the spring plate (604). A limiting sliding plate (608) is fixedly connected to the bottom of the left side plate (607). The limiting sliding plate (608) is slidably connected to the top of the top plate (503).

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