Asphalt pavement construction water seepage detection device

Abstract

The present invention discloses a device for detecting water seepage in asphalt pavement construction, which belongs to the field of detection technology. The device comprises a support column, a guide mechanism connected to the top of the support column, and a fluid cylinder is inserted into the guide mechanisms on both sides. The bottom of the fluid cylinder is connected to a top cover, and the bottom of the top cover is connected to a pressure plate through a plurality of stabilizing columns. A purge mechanism is installed on the top of the top cover. In the present invention, the sealing assembly can be completed by inserting a fitting ring, which is convenient for replacing worn fitting rings and improving test adaptability. The rotation of the control cover can make the stroke groove slide along the triangular inclined surface of the wedge block. At this time, the control cover is pushed up by the inclined surface of the wedge block. The control cover can drive the peripheral expansion block with a fixed rod and the bottom block to move upward. The bottom block can separate from the ground when it moves upward. At this time, the counterweight block can be separated from the ground so that gravity acts completely on the pressure plate. Through the cooperation of the wedge block inclined surface and the control cover, the counterweight state can be quickly switched to meet the detection needs of different road hardness.

Description

Technical Field

[0001] The invention belongs to the field of detection technology, and in particular relates to a water seepage detection device for asphalt pavement construction. Background Art

[0002] Water seepage testing during asphalt pavement construction is a crucial engineering quality inspection. It primarily assesses whether the asphalt pavement maintains adequate water resistance after construction, preventing water from penetrating the pavement structure and thus ensuring its durability and service life. The following is a detailed explanation of water seepage testing: its definition and importance. Water seepage testing uses specific methods and instruments to test the water permeability of the asphalt pavement surface. Its purpose is to ensure that the pavement meets the designed drainage standards after construction.

[0003] The Chinese invention patent with authorization announcement number CN118090561B discloses a device and method for detecting the water seepage performance of asphalt pavement, which belongs to the field of water seepage detection technology and aims to solve the problems of existing testing devices through manual timing, the use of strip-shaped sealants and manual cleaning of the road surface; it includes a base and a cylinder, the bottom of the base is provided with a drainage groove, a liquid level sensor is provided in the cylinder, and the liquid level sensor is electrically connected to an external controller; the bottom of the base is provided with a support leg; the bottom of the base is provided with a first baffle plate, and a blower is provided on the side of the first baffle plate away from the drainage groove; the bottom of the base is provided with a receiving groove, and a second baffle plate is slidably embedded in the receiving groove; the bottom of the base is also provided with a cavity, a piston is slidably embedded in the cavity, a piston rod is provided on the top of the piston, a glue outlet is penetrated through the bottom of the cavity, and a valve is provided at the glue outlet. This solution uses real-time monitoring through liquid level sensors to avoid errors during manual operation; the debris under the base can be blown out of the base through a blower, but in actual use, the seal of the enclosure in contact with the road surface depends on the cooperation of the internal sealing ring and the external glue. When the sealing ring assembly is offset, it is easy to affect the assembly accuracy and cause water to leak out of the enclosure. There is room for improvement. Summary of the Invention

[0004] The purpose of the present invention is to propose a water seepage detection device for asphalt pavement construction in order to solve the problem that the sealing of the enclosure in contact with the road surface depends on the cooperation of the internal sealing ring and the external glue. When the sealing ring assembly is offset, it is easy to affect the assembly accuracy.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A device for detecting water seepage during asphalt pavement construction includes a support column, a guide mechanism connected to the top of the support column, a liquid cylinder inserted into each of the guide mechanisms on both sides, a top cover connected to the bottom of the liquid cylinder, a pressure plate connected to the bottom of the top cover via a plurality of stabilizing columns, a purge mechanism installed on the top of the top cover, a pipe provided between the pressure plate and the top cover, a control valve provided on one side of the pipe, a sealing mechanism connected to the bottom of the pressure plate, and the gap between the pressure plate and the ground is sealed by the sealing mechanism;

[0007] A regulating mechanism is provided on the top of the pressure plate, and a counterweight is provided on the top of the regulating mechanism. The position of the counterweight is controlled by raising and lowering the regulating mechanism on the top of the pressure plate.

[0008] Through the designed guide mechanism and the liquid cylinders set at corresponding positions on both sides, which cooperate with the guide mechanism, synchronous tests can be carried out on both sides of the guide mechanism. By conducting water seepage tests at different positions on both sides of the area, the adaptability of the test samples is improved, making it easier to judge the water seepage conditions at different lateral positions after asphalt pavement construction.

[0009] As a further description of the above technical solution:

[0010] The closing mechanism includes a closing seat, an elastic hoop connected to the inner cavity of the closing seat, a protrusion connected to the circumference of the inner cavity of the closing seat along the axis, and a plurality of force-bearing blocks connected to the outer circumference of the elastic hoop along the axis, the force-bearing blocks and the protrusions corresponding to each other, a fitting ring passing through the closing seat, the top of the fitting ring having a side wall, and a stranded wire wrapped around the outer side of the fitting ring side wall, and the fitting ring is inserted into the elastic hoop through the tensioning of the stranded wire to close the sealing;

[0011] Through the designed closing mechanism, the top stranded wire is inserted into the closing seat through the fitting ring. At this time, the protrusion in the closing seat can contact the force-bearing block. The force-bearing block is squeezed to drive the elastic hoop inward to fully fit the stranded wire and the fitting ring. The radial contraction of the elastic hoop can compress the fitting ring, and the tensioning assembly of the closing seat, the elastic hoop and the fitting ring can be completed. The setting of the stranded wire can improve the tensioning effect after compression and improve the connection closure stability.

[0012] As a further description of the above technical solution:

[0013] The regulating mechanism includes a control cover, and a plurality of expansion blocks are arranged axially around the outer peripheral side of the control cover. The bottom of the expansion block is connected to a fixed rod, and the other end of the fixed rod is connected to a bottom block. The control cover is connected to the top of the pressure plate in a liftable manner, and the contact between the bottom block and the ground is controlled by the top level of the control cover to adjust the weight of the counterweight block.

[0014] Through the designed regulating mechanism, the relative height of the control cover can be adjusted by rotating the control cover. By adjusting the relative height of the control cover, the weight of the counterweight block can be switched to guide the ground, which facilitates the switching of the water seepage detection state.

[0015] As a further description of the above technical solution:

[0016] The top of the pressure plate is axially connected with a plurality of wedge blocks, and the top of the control cover is provided with a plurality of travel grooves corresponding to the wedge blocks along the axis. The wedge blocks are slidably connected in the travel grooves. The cross-section of the wedge blocks is triangular, and the triangular inclined surface of the wedge blocks corresponds to the top of the travel grooves. The control cover is driven to rise and fall through the cooperation between the travel grooves and the wedge blocks.

[0017] Through the designed wedge block and stroke groove, the control cover is more stable in rotating on the inclined surface of the wedge block through the stroke groove, which facilitates improving the control stability after the control cover is raised.

[0018] As a further description of the above technical solution:

[0019] The purge mechanism includes a pressure cover, which is sleeved on the outside of the liquid cylinder. The bottom of the pressure cover is connected to a purge bag, the bottom end of the purge bag is connected to the top of the top cover, the bottom of the purge bag is connected to a purge pipe, and the purge pipe passes through the top cover and extends to the bottom side of the pressure plate.

[0020] Through the designed purge mechanism, the pressure cover can compress the air in the purge bag by squeezing the purge bag. The air flow can be ejected from the one-way air outlet valve at high speed through the purge pipe, and the floating sediment and debris on the ground can be removed through the ejected one-way air outlet valve.

[0021] As a further description of the above technical solution:

[0022] The purge tube is provided with a one-way air outlet valve, and the purge bag is provided with a one-way air inlet valve, and the one-way air outlet valve and the one-way air inlet valve cooperate to perform one-way purge downwards.

[0023] As a further description of the above technical solution:

[0024] The guide mechanism includes a guide sleeve having a groove body, and sliding sleeves are slidably connected on both sides of the groove body cavity, and a guide screw is connected to one side of the sliding sleeve, and the guide screw is threadedly connected to a threaded groove hole opened in the side wall of the guide sleeve;

[0025] Through the designed guide mechanism, the stroke can be adjusted by rotating the guide screw in the threaded slot, which makes it convenient to drive the sliding sleeve to slide in the guide sleeve to adjust the relative positions of the liquid cylinders on both sides after the guide screw moves.

[0026] As a further description of the above technical solution:

[0027] The outside of the fluid cylinder is provided with a liquid measuring stroke, and a sealing gasket is provided between the fluid cylinder and the top cover.

[0028] As a further description of the above technical solution:

[0029] The bottom side of the closed seat is connected with a flexible pad, which is an elastic plastic pad.

[0030] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0031] The present invention provides a sealing mechanism for inserting the top stranded wire into the sealing seat through the fitting ring, at which time the convex block in the sealing seat can contact the force-bearing block, and the force-bearing block can be squeezed to drive the elastic hoop to fully fit the stranded wire and the fitting ring inward, so as to complete the tensioning assembly of the sealing seat, the elastic hoop and the fitting ring. The fitting ring can fit the gap under the pressure of the ground, and the elastic hoop can elastically compensate for the vibration displacement to prevent water seepage and leakage. The sealing assembly can be completed by inserting the fitting ring, which is convenient for replacing the worn fitting ring and improving the test adaptability. The rotation of the control cover can make the stroke groove slide along the triangular inclined surface of the wedge block. At this time, the control cover is pushed up by the inclined surface of the wedge block, and the control cover can drive the peripheral expansion block with the fixed rod and the bottom block to move upward. The bottom block can be separated from the ground when it moves upward. At this time, the counterweight block can be separated from the ground so that gravity can fully act on the pressure plate. The cooperation of the inclined surface of the wedge block and the control cover can quickly switch the counterweight state to meet the testing needs of different road hardness. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the overall structure of a water seepage detection device for asphalt pavement construction proposed by the present invention;

[0033] Figure 2 The present invention proposes Figure 1 A schematic diagram of the structure of the enlarged part A;

[0034] Figure 3 This is a schematic diagram of the disassembled structure of the sealing mechanism of the asphalt pavement construction water seepage detection device proposed by the present invention;

[0035] Figure 4 This is a schematic diagram of the bottom structure of a device for detecting water seepage during asphalt pavement construction proposed by the present invention;

[0036] Figure 5 This is a schematic diagram of the disassembled structure of a water seepage detection device for asphalt pavement construction proposed by the present invention;

[0037] Figure 6 This is a schematic diagram of the disassembled structure of the control mechanism of the asphalt pavement construction water seepage detection device proposed by the present invention;

[0038] Figure 7 This is a schematic diagram of the lateral structure of a water seepage detection device for asphalt pavement construction proposed by the present invention;

[0039] Figure 8 The present invention proposes Figure 7A schematic diagram of the structure of the enlarged portion B;

[0040] Figure 9 This is a schematic structural diagram from another angle of the asphalt pavement construction water seepage detection device proposed by the present invention.

[0041] Legend:

[0042] 1. Support column; 2. Guide mechanism; 201. Guide sleeve; 202. Sliding sleeve; 203. Guide screw; 3. Purge mechanism; 301. Pressure cover; 302. Purge bag; 4. Top cover; 5. Counterweight; 6. Adjustment mechanism; 601. Control cover; 602. Stroke groove; 603. Expansion block; 604. Fixing rod; 605. Bottom block; 606. Wedge block; 7. Closing mechanism; 701. Closing seat; 702. Flexible pad; 703. Bump; 704. Elastic hoop; 705. Force block; 706. Twisted wire; 707. Fitting ring; 8. Stabilizing column; 9. Control valve; 10. Purge tube; 11. Pressure plate; 12. Liquid cylinder. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0044] See also Figures 1-9 The present invention provides a technical solution: a device for detecting water seepage in asphalt pavement construction, comprising a support column 1, a guide mechanism 2 being connected to the top of the support column 1, and a liquid cylinder 12 being passed through the guide mechanisms 2 on both sides, a top cover 4 being connected to the bottom of the liquid cylinder 12, a pressure plate 11 being connected to the bottom of the top cover 4 through a plurality of stabilizing columns 8, a purge mechanism 3 being installed on the top of the top cover 4, and a pipeline being provided between the pressure plate 11 and the top cover 4, a control valve 9 being provided on one side of the pipeline, a closing mechanism 7 being connected to the bottom of the pressure plate 11, and the gap between the pressure plate 11 and the ground being closed by the closing mechanism 7;

[0045] A regulating mechanism 6 is provided on the top of the pressure plate 11 , and a counterweight 5 is provided on the top of the regulating mechanism 6 . The position of the counterweight 5 is controlled by raising and lowering the regulating mechanism 6 on the top of the pressure plate 11 .

[0046] The outside of the fluid cylinder 12 has a liquid measuring stroke, and a sealing gasket is provided between the fluid cylinder 12 and the top cover 4 .

[0047] The closing mechanism 7 includes a closing seat 701, an elastic hoop 704 connected to the inner cavity of the closing seat 701, a protrusion 703 connected to the circumference of the inner cavity of the closing seat 701 along the axis, and a plurality of force blocks 705 connected to the outer circumference of the elastic hoop 704 along the axis. The force blocks 705 and the protrusions 703 correspond to each other. A fitting ring 707 is passed through the closing seat 701, and the fitting ring 707 has a side wall at the top. A stranded wire 706 is wound around the outer side of the fitting ring 707 side wall. The fitting ring 707 is inserted into the elastic hoop 704 to tension the stranded wire 706 for sealing.

[0048] The bottom side of the closing seat 701 is connected to a flexible pad 702 , which is an elastic plastic pad. The flexible pad 702 is designed so that the sealing glue can be pre-coated in the bottom groove of the flexible pad 702 to maintain the fitting effect of the flexible pad 702 .

[0049] Specifically: through the designed closing mechanism 7, when conducting testing, the top stranded wire 706 can be inserted into the closing seat 701 through the fitting ring 707. At this time, the protrusion 703 in the closing seat 701 can contact the force-bearing block 705. The force-bearing block 705 is squeezed to drive the elastic hoop 704 to fully fit the stranded wire 706 and the fitting ring 707 inward. The radial contraction of the elastic hoop 704 can press the fitting ring 707, thereby completing the tensioning assembly of the closing seat 701, the elastic hoop 704 and the fitting ring 707. The fitting ring 707 can fit the gap under the pressure of the ground, and the elastic hoop 704 can elastically compensate for the vibration displacement, which is beneficial to prevent water seepage and leakage. The sealing assembly can be completed by inserting the fitting ring 707, which makes it convenient to replace the worn fitting ring 707 and improves the test adaptability.

[0050] See also Figure 6-Figure 8 The regulating mechanism 6 includes a control cover 601. A plurality of expansion blocks 603 are arranged axially around the outer peripheral side of the control cover 601. The bottom of the expansion block 603 is connected to a fixing rod 604. The other end of the fixing rod 604 is connected to a bottom block 605. The control cover 601 is liftably connected to the top of the pressure plate 11. The top of the control cover 601 controls the contact between the bottom block 605 and the ground to adjust the counterweight of the counterweight block 5.

[0051] A plurality of wedge blocks 606 are axially connected to the top of the pressure plate 11, and a plurality of travel grooves 602 corresponding to the wedge blocks 606 are opened along the axis on the top of the control cover 601. The wedge blocks 606 are slidably connected in the travel grooves 602. The cross-section of the wedge blocks 606 is triangular, and the triangular oblique surface of the wedge blocks 606 corresponds to the top of the travel grooves 602. The control cover 601 is driven to rise and fall through the cooperation between the travel grooves 602 and the wedge blocks 606.

[0052] Specifically: through the designed control mechanism 6, before conducting the test, when the counterweight needs to be installed, the control cover 601 can be manually rotated. The rotation of the control cover 601 can make the travel groove 602 slide along the triangular inclined surface of the wedge block 606. At this time, the inclined surface of the wedge block 606 cooperates to push the control cover 601 up, and the control cover 601 can drive the circumferential expansion block 603 with the fixed rod 604 and the bottom block 605 to move upward. The bottom block 605 moves upward and can be separated from the ground. At this time, the counterweight block 5 can be separated from the ground so that gravity can fully act on the pressure plate 11, so that the counterweight state can be quickly switched through the cooperation of the inclined surface of the wedge block 606 and the control cover 601 to adapt to the detection needs of different road hardnesses, and a support triangle is formed when the bottom block 605 contacts the ground, which can improve the stability of the device.

[0053] The counterweight block 5 is designed to be a disk body composed of two semicircular counterweight parts, and the counterweight parts on both sides of the counterweight block 5 are provided with grooves for accommodating the fixing rods 604 to maintain the stability of the counterweight block 5 after assembly.

[0054] See also Figure 1-Figure 2 The purge mechanism 3 includes a gland 301, which is sleeved on the outside of the liquid cylinder 12. The bottom of the gland 301 is connected to a purge bag 302, the bottom end of the purge bag 302 is connected to the top of the top cover 4, and the bottom of the purge bag 302 is connected to a purge pipe 10, which passes through the top cover 4 and extends to the bottom side of the pressure plate 11;

[0055] The purge tube 10 has a one-way air outlet valve, and the purge bag 302 has a one-way air inlet valve, and the one-way air outlet valve and the one-way air inlet valve cooperate to perform one-way downward purge.

[0056] Specifically: before conducting the inspection, the pressure cover 301 can be pressed, and the pressure cover 301 can compress the air in the purge bag 302 by squeezing the purge bag 302. The air flow can be ejected from the one-way air outlet valve at high speed through the purge tube 10, and the dust and debris on the ground can be removed through the ejected one-way air outlet valve. After releasing the pressure cover 301, the purge bag 302 can use elastic force to inhale air through the one-way air inlet bag to restore to its original state. Through the designed purge bag 302, no external air source is required, and manual pressing can be used to clean the ground, avoiding impurities interfering with water seepage detection, and through one-way airflow circulation control, the backflow of air flow is prevented from affecting the purge effect.

[0057] The guide mechanism 2 includes a guide sleeve 201, which has a groove body, and sliding sleeves 202 are slidably connected on both sides of the inner cavity of the groove body. A guide screw rod 203 is connected to one side of the sliding sleeve 202, and the guide screw rod 203 is threadedly connected to the threaded groove hole opened on the side wall of the guide sleeve 201.

[0058] Specifically: through the designed guiding mechanism 2, the synchronous test of the positions on both sides of the guide sleeve 201 can be realized by cooperating with the fluid cylinders 12 provided at the corresponding positions on both sides, and after twisting the guide screw rod 203 to rotate in the threaded slot hole, the position of the sliding sleeve 202 in the guide sleeve 201 can be adjusted, thereby adjusting the position fine-tuning of the positions of the fluid cylinders 12 on both sides, satisfying the two-way rapid detection within the measuring range, and improving the diversity of the detection samples.

[0059] Working principle: During use, when testing, the top stranded wire 706 is inserted into the closed seat 701 through the fitting ring 707. At this time, the protrusion 703 in the closed seat 701 contacts the force-bearing block 705. The force-bearing block 705 is squeezed and drives the elastic hoop 704 inward to fully fit the stranded wire 706 and the fitting ring 707. The elastic hoop 704 contracts radially and presses the fitting ring 707 tightly, completing the tensioning assembly of the closed seat 701, the elastic hoop 704 and the fitting ring 707. The fitting ring 707 is pressed into place by the ground pressure to close the gap. The elastic hoop 704 elastically compensates for the vibration displacement to prevent water seepage and leakage.

[0060] When the counterweight needs to be installed, the control cover 601 is manually rotated. The control cover 601 rotates to make the travel groove 602 slide along the triangular inclined surface of the wedge block 606. The inclined surface of the wedge block 606 cooperates to push the control cover 601 up. The control cover 601 drives the peripheral expansion block 603 with the fixing rod 604 and the bottom block 605 to move upward. The bottom block 605 moves upward and separates from the ground. At this time, the counterweight block 5 is separated from the ground, so that gravity fully acts on the pressure plate 11, through the cooperation between the inclined surface of the wedge block 606 and the control cover 601;

[0061] By pressing the pressure cover 301, the pressure cover 301 squeezes the purge bag 302, compressing the air in the purge bag 302, and the air flow is ejected from the one-way air outlet valve at high speed through the purge pipe 10, and the floating sediment and debris on the ground are removed through the ejected one-way air outlet valve. After releasing the pressure cover 301, the purge bag 302 uses elastic force to inhale air through the one-way air inlet bag to return to its original state.

[0062] In the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless expressly limited otherwise. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; "connected" can mean a direct connection or an indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0063] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A water seepage detection device for asphalt pavement construction, comprising a support column (1), wherein the top of the support column (1) is connected to a guide mechanism (2), and liquid cylinders (12) are inserted into the guide mechanisms (2) on both sides, characterized in that: The bottom of the liquid cylinder (12) is connected to a top cover (4), and the bottom of the top cover (4) is connected to a pressure plate (11) through a plurality of stabilizing columns (8). A purge mechanism (3) is installed on the top of the top cover (4), and a pipeline is provided between the pressure plate (11) and the top cover (4). A control valve (9) is provided on one side of the pipeline. The bottom of the pressure plate (11) is connected to a closing mechanism (7), and a gap between the pressure plate (11) and the ground is closed by the closing mechanism (7). A regulating mechanism (6) is provided on the top of the pressure plate (11), and a counterweight (5) is provided on the top of the regulating mechanism (6). The position of the counterweight (5) is controlled by raising and lowering the regulating mechanism (6) on the top of the pressure plate (11); The regulating mechanism (6) comprises a control cover (601), a plurality of expansion blocks (603) are arranged axially around the outer peripheral side of the control cover (601), a fixing rod (604) is connected to the bottom of the expansion block (603), and the other end of the fixing rod (604) is connected to the bottom block (605), and the control cover (601) is connected to the top of the pressure plate (11) in a liftable manner, and the counterweight of the counterweight block (5) is adjusted by controlling the contact between the top end of the control cover (601) and the bottom block (605) and the ground; The top of the pressure plate (11) is axially connected with a plurality of wedge blocks (606), and the top of the control cover (601) is provided with a plurality of travel grooves (602) corresponding to the wedge blocks (606) along the axis. The wedge blocks (606) are slidably connected in the travel grooves (602). The cross-section of the wedge blocks (606) is triangular, and the triangular inclined surface of the wedge blocks (606) corresponds to the top of the travel grooves (602). The control cover (601) is driven to rise and fall by the cooperation between the travel grooves (602) and the wedge blocks (606).

2. The asphalt pavement construction water seepage detection device according to claim 1, characterized in that: The closing mechanism (7) comprises a closing seat (701), an inner cavity of the closing seat (701) is connected to an elastic hoop (704), a circumferential side of the inner cavity of the closing seat (701) is connected to a protrusion (703) along an axis, an outer circumferential side of the elastic hoop (704) is connected to a plurality of force-bearing blocks (705) along an axis, the force-bearing blocks (705) and the protrusions (703) correspond to each other, a fitting ring (707) is passed through the closing seat (701), a top of the fitting ring (707) has a side wall, and a stranded wire (706) is wound around the outer side of the side wall of the fitting ring (707), and the fitting ring (707) is inserted into the elastic hoop (704) to tension the stranded wire (706) for sealing.

3. The asphalt pavement construction water seepage detection device according to claim 1, characterized in that: The purge mechanism (3) comprises a pressure cover (301), the pressure cover (301) is sleeved on the outside of the liquid cylinder (12), the bottom of the pressure cover (301) is connected to a purge bag (302), the bottom end of the purge bag (302) is connected to the top of the top cover (4), the bottom of the purge bag (302) is connected to a purge pipe (10), and the purge pipe (10) passes through the top cover (4) and extends to the bottom side of the pressure plate (11).

4. The asphalt pavement construction water seepage detection device according to claim 3, characterized in that: The purge pipe (10) has a one-way air outlet valve, and the purge bag (302) has a one-way air inlet valve, and the one-way air outlet valve and the one-way air inlet valve cooperate to perform one-way downward purge.

5. The asphalt pavement construction water seepage detection device according to claim 1, characterized in that: The guide mechanism (2) comprises a guide sleeve (201), the guide sleeve (201) having a groove body, and both sides of the inner cavity of the groove body are slidably connected to sliding sleeves (202), one side of the sliding sleeve (202) is connected to a guide screw rod (203), and the guide screw rod (203) is threadedly connected to a threaded groove hole opened on the side wall of the guide sleeve (201).

6. The asphalt pavement construction water seepage detection device according to claim 1, characterized in that: The outside of the liquid cylinder (12) has a liquid measuring stroke, and a sealing gasket is provided between the liquid cylinder (12) and the top cover (4).

7. The asphalt pavement construction water seepage detection device according to claim 2, characterized in that: The bottom side of the closed seat (701) is connected to a flexible pad (702), and the flexible pad (702) is an elastic plastic pad.

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