A material water seepage detection device for road construction

Abstract

The present invention discloses a water seepage detection device for road construction materials, which specifically relates to the field of road detection. The water seepage detection device comprises a detection platform, on which a lower water tank and an upper water tank are arranged, the upper water tank is located above the lower water tank, a water outlet is arranged on one side of the lower water tank, and a water inlet is arranged on one side of the upper water tank; an elastic sleeve is fixedly connected to the bottom of the upper water tank, and the elastic sleeve is used to wrap the outer side wall of the sample, so that the sample is kept inside the elastic sleeve. A lifting mechanism is arranged on one side of the detection platform, and a pressing mechanism is installed at the output end of the lifting mechanism, and the lifting mechanism is used to drive the pressing mechanism to move vertically. The present invention wraps the outer side wall of the sample by utilizing the elastic force of the elastic sleeve, and keeps the sample inside the elastic sleeve, and there is no gap between the inner side wall of the elastic sleeve and the outer side wall of the sample, so that when water seepage is detected, water will only seep downward from the sample, thereby ensuring the accuracy of the detection result.

Description

Technical Field

[0001] The present invention relates to the technical field of road detection, and more specifically, to a water seepage detection device for road construction materials. Background Art

[0002] A sponge city can give full play to the natural purification function of vegetation, soil, wetlands, etc. on water quality, enabling the city to be like a "sponge", having the functions of absorbing and releasing rainwater, and being able to elastically adapt to environmental changes and respond to natural disasters, such as restoring the river and lake ecosystem and reducing the risk of urban waterlogging. The content of sponge city construction includes important contents such as permeable pavement, sunken green space, and bioretention facilities.

[0003] Among them, permeable pavement uses permeable bricks, permeable cement concrete, etc. to pave the road surface, making the road surface have the function of water seepage, and it itself has characteristics such as environmental protection, durability, and anti-slip. The permeability coefficient is an important parameter to measure the water seepage performance of permeable bricks, which characterizes the ability of water to pass through permeable bricks per unit time. The larger the permeability coefficient, the more water can be quickly drained away by the permeable bricks in the same time, and the better the drainage ability.

[0004] In the prior art, when detecting the water seepage of road construction materials such as permeable bricks, the permeable bricks are first cut into samples of a fixed size, and then the samples are clamped by a clamping device. Water tanks are respectively arranged above and below the samples. The bottom of the upper water tank extends into the inner side of the lower water tank. Water is contained in the water tanks. The height difference between the water levels in the two water tanks is the head difference. Water is continuously added to the upper water tank to ensure that the liquid level remains basically stable. A drain pipe is arranged in the lower water tank, and the liquid level is kept at the position of the drain pipe. The water in the upper water tank seeps through the permeable bricks and flows into the lower water tank, and then is collected from the drain pipe, and finally the permeability coefficient is calculated.

[0005] However, in the prior art, since iron sheets are used to clamp the permeable bricks, water leakage is likely to occur at the joints between the iron sheets, resulting in inaccurate detection results. Summary of the Invention

[0006] A water seepage detection device for road construction materials provided by the present invention aims to solve the problem that in the prior art, when iron sheets are used to clamp the permeable bricks, water leakage is likely to occur at the joints between the iron sheets, resulting in inaccurate detection results.

[0007] To achieve the above object, the present invention provides the following technical solution: A water seepage detection device for road construction materials includes a detection table, a lower water tank and an upper water tank are arranged on the detection table, the upper water tank is located above the lower water tank, an outlet is arranged on one side of the lower water tank, and an inlet is arranged on one side of the upper water tank; an elastic sleeve is fixedly connected to the bottom of the upper water tank, and the elastic sleeve is used to wrap the outer side wall of the sample, so that the sample is kept inside the elastic sleeve.

[0008] In a preferred embodiment, a lifting mechanism is provided on one side of the detection table, and a pressing mechanism is installed at the output end of the lifting mechanism. The lifting mechanism is used to drive the pressing mechanism to move vertically, so that the pressing mechanism presses the sample into the elastic sleeve, so that the elastic sleeve wraps the outer side wall of the sample.

[0009] In a preferred embodiment, the lifting mechanism includes a fixed frame, the fixed frame is fixedly installed on the detection table, a lifting rod is vertically and movably inserted on the fixed frame, a movable frame is arranged at the bottom of the fixed frame, a connecting rod is arranged between the fixed frame and the movable frame, the upper and lower ends of the connecting rod are respectively hinged to the fixed frame and the movable frame, a rotating shaft is rotatably connected to the upper end of the movable frame, the rotating shaft is horizontally inserted at the lower end of the lifting rod, and the pressing mechanism is installed at the upper end of the lifting rod.

[0010] In a preferred embodiment, the pressing mechanism includes a mounting plate, the mounting plate is fixedly installed at the upper end of the lifting rod, a mounting column is vertically fixedly installed at one end of the mounting plate, a pressing disc is fixedly installed at the lower end of the mounting column, a plurality of clamping fingers are arranged in the circumferential direction of the pressing disc, the plurality of clamping fingers are slidably installed on the pressing disc along the radial direction of the pressing disc, a first elastic member is pressed between the clamping fingers and the pressing disc, and the pressing mechanism further includes a driving assembly, and the driving assembly is used to drive the clamping fingers to move towards the middle of the pressing disc, so that the clamping fingers clamp the sample below the pressing disc.

[0011] In a preferred embodiment, the driving assembly includes driving rods corresponding to the clamping fingers one by one. The lower end of the driving rod is fixedly connected to the clamping finger, the upper end of the driving rod is inclined, a driving sleeve is sleeved outside the mounting column, the inner surface of the driving sleeve is a conical surface, the upper end of the driving rod contacts the conical surface, and a first linear driving member is installed on the mounting plate. The output end of the first linear driving member is fixedly installed with the driving sleeve.

[0012] In a preferred embodiment, a tray is vertically movably installed at the bottom inside the water sink, a second linear driving member is installed inside the detection table, and the output end of the second linear driving member is fixedly connected to the tray. The second linear driving member is used to drive the tray to move vertically.

[0013] In a preferred embodiment, a clamp is arranged outside the elastic sleeve. The clamp includes a support plate, the support plate is fixedly installed on the detection table, a guide rod is horizontally fixedly installed on the support plate, two clamping plates are horizontally slidably connected to the guide rod, the two clamping plates are located between the elastic sleeve and the water sink, and the part of the clamping plate outside the elastic sleeve is semicircular. A second elastic member corresponding to the clamping plate is sleeved outside the guide rod, and the two ends of the second elastic member are respectively connected to the support plate and the clamping plate.

[0014] In a preferred embodiment, push blocks are fixedly connected to both sides of the side wall of the movable frame. Wedge blocks are fixedly connected to one ends of the two clamping plates located outside the detection table. The wedge blocks on the two clamping plates are located on the sides where the two clamping plates are away from each other. When the lifting rod is at the highest point, the push block presses the wedge block, so that the two clamping plates approach each other to clamp the outer side wall of the elastic sleeve.

[0015] In a preferred embodiment, a distance sensor is installed on the mounting plate, and the distance sensor is used to detect the distance from the mounting plate to the upper water tank.

[0016] In a preferred embodiment, the material water seepage detection device further includes a water pump. The output end of the water pump is communicated with the water inlet, so that the water pump supplies water to the inside of the upper water tank. A liquid level sensor for detecting the water level in the upper water tank is installed on the upper water tank.

[0017] Technical effects and advantages of the present invention:

[0018] 1. By utilizing the elastic force of the elastic sleeve, the outer side wall of the sample is wrapped, and the sample is kept inside the elastic sleeve. There will be no gap between the inner side wall of the elastic sleeve and the outer side wall of the sample. Thus, during the water seepage detection, water will only seep downward from the sample, ensuring the accuracy of the detection result.

[0019] 2. By adopting the method of first clamping the sample with the pressing mechanism, then conveying the sample downward for a certain distance and releasing it, and finally pressing the sample, the sample can be made to fall as horizontally as possible when it falls, avoiding the problem that when the sample is directly placed into the upper water tank, the sample is in an upright state and when the pressing plate presses down, it contacts the outer side wall of the sample and cannot flatten the sample.

[0020] 3. The outer side of the elastic sleeve is clamped by the two clamping plates, thereby increasing the pressure between the elastic sleeve and the sample, improving the stability of the sample, and preventing the water from pressing down the sample and separating it from the elastic sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the partial structure of the present invention.

[0023] Figure 3 For the present invention Figure 2 is a cross-sectional view.

[0024] Figure 4 It is a schematic diagram of the structures of the pressing mechanism and the lifting mechanism of the present invention.

[0025] Figure 5 It is a schematic diagram of the lifting mechanism of the present invention.

[0026] Figure 6 This is a schematic structural diagram of the pressing mechanism of the present invention.

[0027] Figure 7 This is a schematic structural diagram of the fixture installation of the present invention.

[0028] Figure 8 This is a schematic diagram of the process of the lifting rod lifting of the present invention.

[0029] The reference numerals in the drawings are: 1, detection table; 2, lower water tank; 21, water outlet; 3, upper water tank; 31, water inlet; 4, elastic sleeve; 5, pressing mechanism; 51, mounting plate; 52, mounting column; 53, pressing plate; 54, clamping finger; 55, first elastic member; 56, driving assembly; 561, driving rod; 562, driving sleeve; 563, first linear driving member; 6, lifting mechanism; 61, fixing frame; 62, lifting rod; 63, movable frame; 631, pushing block; 64, connecting rod; 65, rotating shaft; 66, handle; 7, tray; 71, second linear driving member; 8, fixture; 80, support plate; 81, clamping plate; 82, wedge-shaped block; 83, guiding rod; 84, second elastic member; 9, sample. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0031] Referring to the attached drawings of the specification Figures 1-8 A material water seepage detection device for road construction includes a detection table 1. A lower water tank 2 and an upper water tank 3 are arranged on the detection table 1. The upper water tank 3 is located above the lower water tank 2. A water outlet 21 is arranged on one side of the lower water tank 2, and a water inlet 31 is arranged on one side of the upper water tank 3. The bottom of the upper water tank 3 is fixedly connected with an elastic sleeve 4. The elastic sleeve 4 is used to wrap the outer sidewall of the sample 9 so as to keep the sample 9 inside the elastic sleeve 4.

[0032] Furthermore, the material water seepage detection device further includes a water pump. The output end of the water pump is communicated with the water inlet 31 so that the water pump supplies water into the upper water tank 3. A liquid level sensor for detecting the water level in the upper water tank 3 is installed on the upper water tank 3.

[0033] It should be noted that the lower water tank 2 has an open upper end structure, and the upper water tank 3 has open upper and lower ends. The upper water tank 3 is fixedly installed on the detection table 1 through a bracket, and the elastic sleeve 4 is located inside the lower water tank 2. The above sample 9 can be a permeable brick, etc. Before detection, the permeable brick needs to be cut into a cylindrical shape to facilitate the wrapping of the elastic sleeve 4. Among them, the elastic sleeve 4 can be made of rubber material.

[0034] In this embodiment, the implementation method is as follows: During detection, first, place the cylindrical permeable brick inside the upper water tank 3. In the natural state, the inner diameter of the elastic sleeve 4 is smaller than the outer diameter of the permeable brick. Therefore, the permeable brick will not fall out from below the elastic sleeve 4. Then, since it is necessary to make the elastic sleeve 4 wrap the outer wall of the permeable brick, it is necessary to press down the permeable brick to flatten it so that the outer wall of the permeable brick is in full contact with the inner wall of the elastic sleeve 4. At this time, the elastic sleeve 4 wraps the outer wall of the permeable brick through its own elastic force and holds it inside the elastic sleeve 4. Secondly, supply water to the inner wall of the upper water tank 3 from the position of the water inlet 31 through a water pump, and detect the liquid level in the upper water tank 3 through a liquid level sensor to keep the liquid level of the water at a specified height. During this process, the water continuously seeps from the permeable brick into the lower water tank 2. After the liquid level in the lower water tank 2 rises to the water outlet 21, the water flows out from the water outlet 21. Wait for a period of time until the water flowing out from the water outlet 21 is stable, then use a container to collect the water flowing out from the water outlet 21 and start timing. After the timing ends, stop collecting the water flowing out from the water outlet 21, and determine the water seepage performance of the permeable brick based on the amount of water collected by the container.

[0035] The above technical solution uses the elastic force of the elastic sleeve 4 to wrap the outer wall of the sample 9 and keep the sample 9 inside the elastic sleeve 4. There will be no gap between the inner wall of the elastic sleeve 4 and the outer wall of the sample 9. Therefore, during the water seepage detection, the water will only seep downward from the sample 9, ensuring the accuracy of the detection result.

[0036] Refer to the attached drawings of the specification Figures 1-8 Since it is inconvenient to directly put the hand into the upper water tank 3 to press the sample 9 and press the sample 9 into the elastic sleeve 4, a lifting mechanism 6 is provided on one side of the detection table 1. The output end of the lifting mechanism 6 is installed with a pressing mechanism 5. The lifting mechanism 6 is used to drive the pressing mechanism 5 to move vertically, so that the pressing mechanism 5 presses the sample 9 into the elastic sleeve 4, so that the elastic sleeve 4 wraps the outer wall of the sample 9.

[0037] Further, the lifting mechanism 6 includes a fixed frame 61 fixedly installed on the inspection table 1. A lifting rod 62 is vertically and movably inserted into the fixed frame 61. An activity frame 63 is arranged at the bottom of the fixed frame 61. A connecting rod 64 is arranged between the fixed frame 61 and the activity frame 63. The upper and lower ends of the connecting rod 64 are respectively hinged to the fixed frame 61 and the activity frame 63. The upper end of the activity frame 63 is rotatably connected with a rotating shaft 65. The rotating shaft 65 is horizontally inserted into the lower end of the lifting rod 62. The pressing mechanism 5 is installed at the upper end of the lifting rod 62.

[0038] It should be noted that, as Figure 4 and Figure 5 shown, a handle 66 is fixedly connected to one side of the activity frame 63. When lifting is required, the handle 66 can be pulled. When the handle 66 is pulled, the activity frame 63 can rotate. Specifically, as shown in ①, ②, ③, and ④ in Figure 8 , in ①, the lifting rod 62 is in the highest state. In this state, when the handle 66 is pulled to make the activity frame 63 rotate, the activity frame 63 pulls the lifting rod 62 downward through the rotating shaft 65, and the connecting rod 64 swings. In ④, the lifting rod 62 is in the lowest state. The process from ① to ④ is the descending process, and the process from ④ to ① is the ascending process.

[0039] Further, the pressing mechanism 5 includes a mounting plate 51 fixedly installed at the upper end of the lifting rod 62. A mounting column 52 is vertically fixedly installed at one end of the mounting plate 51. A pressing disc 53 is fixedly installed at the lower end of the mounting column 52. A plurality of clamping fingers 54 are arranged in the circumferential direction of the pressing disc 53. The plurality of clamping fingers 54 are slidably installed on the pressing disc 53 along the radial direction of the pressing disc 53. An elastic component I 55 is pressed between the clamping fingers 54 and the pressing disc 53. The pressing mechanism 5 further includes a driving component 56 for driving the clamping fingers 54 to move towards the middle of the pressing disc 53, so that the clamping fingers 54 clamp the sample 9 below the pressing disc 53.

[0040] Still further, the driving component 56 includes driving rods 561 corresponding to the clamping fingers 54 one by one. The lower end of the driving rod 561 is fixedly connected to the clamping finger 54. The upper end of the driving rod 561 is inclined. A driving sleeve 562 is sleeved outside the mounting column 52. The inner surface of the driving sleeve 562 is a conical surface. The upper end of the driving rod 561 contacts the conical surface. A linear driving component I 563 is installed on the mounting plate 51. The output end of the linear driving component I 563 is fixedly installed with the driving sleeve 562.

[0041] It should be noted that the elastic component I 55 is a compression spring, and the linear driving component I 563 is a cylinder.

[0042] In this embodiment, when pressing the sample 9 into the elastic sleeve 4, first, place the sample 9 below the pressing plate 53, and then drive the driving sleeve 562 to move downward through the first linear driving component 563. The conical surface on the inner surface of the driving sleeve 562 presses down the driving rod 561, causing the driving rod 561 to drive the clamping fingers 54 to move towards the middle of the pressing plate 53, so as to clamp the sample 9 through a plurality of ( Figure 6 Four are provided in) the clamping fingers 54. Then, drive the pressing mechanism 5 to move downward through the lifting mechanism 6. When the sample 9 approaches the elastic sleeve 4, drive the driving sleeve 562 to move upward through the first linear driving component 563. Under the action of the first elastic component 55, the clamping fingers 54 move in a direction away from the middle of the pressing plate 53. At this time, the sample 9 is released and falls. Secondly, drive the driving sleeve 562 to move downward again through the first linear driving component 563, so that the clamping fingers 54 move to a position inside the outer circumference of the pressing plate 53, that is, the clamping fingers 54 do not extend out of the pressing plate 53. Finally, the lifting mechanism 6 continues to drive the pressing mechanism 5 to move downward, so as to press the sample 9 through the pressing plate 53 and the clamping fingers 54 and press the sample 9 against the inner side of the elastic sleeve 4.

[0043] In the above technical solution, by first clamping the sample 9 with the pressing mechanism 5, then conveying the sample 9 downward for a certain distance and releasing it, and finally pressing the sample 9, the sample 9 can be in a horizontal state as much as possible when falling, avoiding the problem that when the sample 9 is directly placed in the upper water tank 3, the sample 9 is in an upright state, and when the pressing plate 53 presses down, it contacts the outer side wall (cylindrical surface) of the sample 9, resulting in the problem that the sample 9 cannot be pressed flat.

[0044] It should also be supplemented that when the pressing mechanism 5 releases the sample 9, the purpose of making the clamping fingers 54 not extend out of the pressing plate 53 is to prevent the problem of severe extrusion and scratching between the clamping fingers 54 and the inner side wall of the elastic sleeve 4 when the clamping fingers 54 extend out.

[0045] Furthermore, a distance sensor is installed on the mounting plate 51, and the distance sensor is used to detect the distance between the mounting plate 51 and the upper water tank 3.

[0046] It should be noted that by detecting the distance between the mounting plate 51 and the upper water tank 3 with the distance sensor, the descending distance of the pressing mechanism 5 can be judged, so as to master the timing of releasing the sample 9 by the pressing mechanism 5. This timing is the state where the clamping fingers 54 do not touch the elastic sleeve 4 and the sample 9 is as close to the elastic sleeve 4 as possible.

[0047] Referring to the attached Figure 3 to the specification, a tray 7 is vertically movably installed at the bottom inside the lower water tank 2, and a second linear driving component 71 is installed inside the inspection table 1. The output end of the second linear driving component 71 is fixedly connected to the tray 7, and the second linear driving component 71 is used to drive the tray 7 to move vertically.

[0048] It should be noted that the linear drive component II 71 adopts a cylinder. When pressing the sample 9 against the inner side of the elastic sleeve 4, the tray 7 is driven by the linear drive component II 71 to move upward to the position at the bottom inside the elastic sleeve 4. Thus, when pressing the sample 9 downward, by holding the sample 9, it can be ensured that the sample 9 can be pressed to a horizontal state.

[0049] Refer to the attached drawings of the specification Figures 2-3 and Figure 7 , a fixture 8 is provided on the outer side of the elastic sleeve 4. The fixture 8 includes a support plate 80. The support plate 80 is fixedly installed on the test bench 1. A guide rod 83 is horizontally and fixedly installed on the support plate 80. Two clamping plates 81 are horizontally slidably connected to the guide rod 83. The two clamping plates 81 are located between the elastic sleeve 4 and the water sink 2, and the part of the clamping plate 81 located outside the elastic sleeve 4 is semi-circular. An elastic component II 84 corresponding to each clamping plate 81 is sleeved on the outer side of the guide rod 83. The two ends of the elastic component II 84 are respectively connected to the support plate 80 and the clamping plate 81.

[0050] Furthermore, push blocks 631 are fixedly connected to both sides of the side wall of the movable frame 63. Wedge-shaped blocks 82 are fixedly connected to one ends of the two clamping plates 81 located outside the test bench 1. The wedge-shaped blocks 82 on the two clamping plates 81 are located on the side where the two clamping plates 81 are away from each other. When the lifting rod 62 is at the highest point, the push block 631 presses the wedge-shaped block 82, so that the two clamping plates 81 approach each other to clamp the outer side wall of the elastic sleeve 4.

[0051] It should be noted that the elastic component II 84 is a tension spring, which is used to separate the two clamping plates 81 from each other.

[0052] In this embodiment, after pressing the sample 9 into the inner side of the elastic sleeve 4, water seepage detection is carried out. During the detection, since there is more water above the elastic sleeve 4, therefore, in order to prevent the water from pressing the sample 9 downward and separating it from the elastic sleeve 4, during the detection, the outer side of the elastic sleeve 4 is clamped by the two clamping plates 81, so as to increase the pressure between the elastic sleeve 4 and the sample 9 and improve the stability of the sample 9. As Figure 7 shown, in this state, the lifting rod 62 is at the highest point. At this time, the two push blocks 631 respectively push and press the two wedge-shaped blocks 82, so that the two clamping plates 81 approach each other, and the semi-circular parts of the two clamping plates 81 clamp the outer side wall of the elastic sleeve 4. After the detection is completed, pull the handle 66, the push block 631 disengages from the wedge-shaped block 82, the lifting rod 62 descends, and the pressing mechanism 5 can push the sample 9 downward out of the elastic sleeve 4, remove the upper water tank 3 from the bracket and lift it upward, and then take out the sample 9.

[0053] Finally, the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A road construction material water seepage detection device, characterized in that: The test platform (1) comprises a lower water tank (2) and an upper water tank (3) provided on the test platform (1), wherein the upper water tank (3) is located above the lower water tank (2), a water outlet (21) is provided on one side of the lower water tank (2), and a water inlet (31) is provided on one side of the upper water tank (3); An elastic sleeve (4) is fixedly connected to the bottom of the upper water tank (3), and the elastic sleeve (4) is used to wrap the outer wall of the sample (9), so that the sample (9) is kept inside the elastic sleeve (4); A lifting mechanism (6) is provided on one side of the testing platform (1), and a pressing mechanism (5) is installed at the output end of the lifting mechanism (6). The lifting mechanism (6) is used to drive the pressing mechanism (5) to move vertically, so that the pressing mechanism (5) presses the sample (9) into the elastic sleeve (4), so that the elastic sleeve (4) wraps the outer wall of the sample (9); The lifting mechanism (6) comprises a fixed frame (61), the fixed frame (61) is fixedly mounted on the detection platform (1), a lifting rod (62) is vertically movably inserted on the fixed frame (61), a movable frame (63) is arranged at the bottom of the fixed frame (61), a connecting rod (64) is arranged between the fixed frame (61) and the movable frame (63), the upper and lower ends of the connecting rod (64) are respectively hinged to the fixed frame (61) and the movable frame (63), the upper end of the movable frame (63) is rotatably connected to a rotating shaft (65), the rotating shaft (65) is horizontally inserted into the lower end of the lifting rod (62), and the pressing mechanism (5) is installed at the upper end of the lifting rod (62); A clamp (8) is arranged on the outer side of the elastic sleeve (4), and the clamp (8) comprises a support plate (80), and the support plate (80) is fixedly mounted on the detection platform (1); a guide rod (83) is fixedly mounted on the support plate (80) in a transverse direction, and two clamping plates (81) are connected to the guide rod (83) in a transverse sliding manner, and the two clamping plates (81) are located between the elastic sleeve (4) and the lower water tank (2), and the part of the clamping plate (81) located on the outer side of the elastic sleeve (4) is semicircular, and an elastic component (84) corresponding to the clamping plate (81) is sleeved on the outer side of the guide rod (83), and the two ends of the elastic component (84) are respectively connected to the support plate (80) and the clamping plate (81); Push blocks (631) are fixedly connected to both sides of the side walls of the movable frame (63), and wedge blocks (82) are fixedly connected to one end of the two clamping plates (81) located on the outside of the detection platform (1). The wedge blocks (82) on the two clamping plates (81) are located on the side where the two clamping plates (81) are away from each other. When the lifting rod (62) is at the highest point, the push block (631) presses the wedge block (82), so that the two clamping plates (81) are close to each other to clamp the outer wall of the elastic sleeve (4).

2. A road construction material water seepage detection device according to claim 1, characterized in that: The pressing mechanism (5) comprises a mounting plate (51), wherein the mounting plate (51) is fixedly mounted on the upper end of the lifting rod (62), a mounting column (52) is vertically fixedly mounted on one end of the mounting plate (51), a pressure plate (53) is fixedly mounted on the lower end of the mounting column (52), a plurality of clamping fingers (54) are arranged in the circumferential direction of the pressure plate (53), and the plurality of clamping fingers (54) are slidably mounted on the pressure plate (53) along the radial direction of the pressure plate (53), an elastic component (55) is pressed between the clamping fingers (54) and the pressure plate (53), and the pressing mechanism (5) further comprises a driving assembly (56), wherein the driving assembly (56) is used to drive the clamping fingers (54) to move toward the middle of the pressure plate (53), so that the clamping fingers (54) clamp the sample (9) below the pressure plate (53).

3. A road construction material water seepage detection device according to claim 2, characterized in that: The driving assembly (56) comprises a driving rod (561) corresponding to the clamping fingers (54) one by one, the lower end of the driving rod (561) is fixedly connected to the clamping fingers (54), the upper end of the driving rod (561) is inclined, the outer side of the mounting column (52) is provided with a driving sleeve (562), the inner surface of the driving sleeve (562) is a conical surface, the upper end of the driving rod (561) is in contact with the conical surface, and a linear driving component (563) is installed on the mounting plate (51), and the output end of the linear driving component (563) is fixedly installed with the driving sleeve (562).

4. A road construction material water seepage detection device according to claim 1, characterized in that: A tray (7) is vertically movably installed at the bottom of the inner side of the lower water tank (2), and a second linear drive component (71) is installed inside the detection platform (1). The output end of the second linear drive component (71) is fixedly connected to the tray (7), and the second linear drive component (71) is used to drive the tray (7) to move vertically.

5. A road construction material water seepage detection device according to claim 2, characterized in that: A distance sensor is installed on the installation plate (51), and the distance sensor is used to detect the distance from the installation plate (51) to the upper water tank (3).

6. A road construction material water seepage detection device according to claim 1, characterized in that: The material water seepage detection device also includes a water pump, the output end of which is connected to the water inlet (31), so that the water pump supplies water to the interior of the upper water tank (3), and a liquid level sensor for detecting the water level in the upper water tank (3) is installed on the upper water tank (3).

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