Device for detecting water permeability of steel slag asphalt pavement

Abstract

The invention discloses a steel slag asphalt pavement water seepage performance detection device, and belongs to the field of steel slag asphalt pavement water seepage performance detection.The device comprises a support, supporting legs are connected to the bottom of the support, a sealing cover is placed in the middle of the support, a first cylinder is connected to the outer side of a cover opening of the sealing cover, and a water adding pipe is connected to the sealing cover; the water adding pipe communicates with an L-shaped pipe, the sealing cover communicates with a vertical pipe, an electromagnetic ring and a first limiting ring are connected into a vertical section of the L-shaped pipe, a magnetic piston plate is slidably connected between the electromagnetic ring and the first limiting ring, a second limiting ring is fixedly connected into the vertical pipe, and a column body is slidably connected to the upper portion of the second limiting ring; if a gap exists between the sealing cover and the steel slag asphalt pavement, air in the sealing cover can leak out through the gap between the sealing cover and the steel slag asphalt pavement support after the column body moves downwards, and therefore the magnetic piston plate cannot move to the magnetic adsorption range of the electromagnetic ring; therefore, the sealing state between the sealing cover and the steel slag asphalt pavement can be directly obtained.

Description

Technical Field

[0001] The invention relates to the technical field of water seepage performance detection of steel slag asphalt pavement, in particular to a water seepage performance detection device of steel slag asphalt pavement. Background Art

[0002] In the maintenance and inspection process of steel slag asphalt pavement, water permeability is a key indicator, which is directly related to the durability of the pavement and driving safety. In order to accurately evaluate the water permeability of steel slag asphalt pavement, a special detection device is required. However, the existing water permeability detection devices often face some challenges during the detection process.

[0003] Traditional water seepage testing devices usually rely on a simple water addition method to evaluate the water seepage of the road surface. The basic operation of this method is to place a sealing device on the road surface to be tested, then add water into the device to observe whether water seeps out from the gap between the device and the road surface to judge the water seepage performance of the road surface. However, there is a problem with this method: if the sealing between the sealing device and the road surface is not good, water will leak out from the gap, resulting in inaccurate test results.

[0004] To solve this problem, researchers began to explore more accurate detection methods. One method is to evaluate the water permeability of the road surface by detecting the changes in the air pressure inside the sealing device. This method requires connecting a device that can measure the changes in the internal air pressure to the sealing device and observing the changes in pressure during the water addition process. However, this method faces new challenges in actual operation: how to ensure the sealing between the sealing device and the road surface, and how to accurately measure the changes in the internal air pressure. Summary of the invention

[0005] The purpose of the present invention is to provide a device for detecting water seepage performance of steel slag asphalt pavement, which solves the problem that it is difficult to obtain the sealing performance between the detection device and the steel slag asphalt pavement in the existing device.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for detecting water permeability of steel slag asphalt pavement, comprising a bracket, a support leg is connected to the bottom of the bracket, a sealing cover is placed in the middle of the bracket, a first cylinder is connected to the outer side of the cover opening of the sealing cover, the first cylinder is filled with sealing material, a water supply pipe is connected to the sealing cover, an L-shaped pipe is connected to the water supply pipe, a vertical pipe is connected to the sealing cover, an electromagnetic ring and a first limiting ring are connected in the vertical section of the L-shaped pipe, a magnetic piston plate is slidably connected between the electromagnetic ring and the first limiting ring, a second limiting ring is fixedly connected in the vertical pipe, and a column is slidably connected on the upper part of the second limiting ring; The sealing material fills the gap between the sealing cover and the road surface. When the column slides down under the vertical pipe, the magnetic piston plate slides up relative to the L-shaped tube. Moreover, when the sealing cover and the road surface are sealed, the magnetic piston plate slides down to the magnetic adsorption range of the electromagnetic ring. When there is a gap between the sealing cover and the road surface, the magnetic piston plate does not slide up or the sliding distance does not reach the magnetic adsorption range of the electromagnetic ring.

[0007] Preferably, the first cylinder is coaxially connected to the second cylinder, the first cylinder and the second cylinder are slidably connected to the first ring and the second ring respectively, the bracket is fixedly connected to the first electric telescopic rod, the output end of the first electric telescopic rod is rotatably connected to a gear, two racks are symmetrically meshed on both sides of the gear, a protrusion is provided on the rack located on the upper part of the second cylinder, the second cylinder is slidably connected to the electric slider, and the electric slider is clamped at the lower part of the protrusion; When the electric slider is located at the lower part of the protrusion, the first electric telescopic rod is extended to push the first ring downward, so that the sealing material is filled between the sealing cover and the road surface. Position sensors are arranged in the L-shaped tube and the vertical tube. The position sensor in the vertical tube detects that the column slides to the second limiting ring, and when the position sensor in the L-shaped tube detects that the magnetic piston plate moves up to the magnetic attraction range of the electromagnetic ring, the electromagnetic ring is energized, and when the position sensor in the vertical tube detects that the column slides to the second limiting ring, and when the position sensor in the L-shaped tube does not detect that the magnetic piston plate moves up to the magnetic attraction range of the electromagnetic ring, the electromagnetic ring is not energized, the electric slider slides out of the lower part of the protrusion, and the first electric telescopic rod is further extended to push the second ring downward.

[0008] Preferably, two slide seats are connected to the bracket, and the two racks slide on the two slide seats respectively.

[0009] Preferably, a water storage cylinder is provided at the upper part of the bracket, and an outer cylinder is connected to the lower part of the water storage cylinder. The outer cylinder is slidably connected to the water filling pipe. When the outer cylinder slides at both ends of the travel of the water filling pipe, the water in the water storage cylinder cannot be discharged into the sealing cover.

[0010] Preferably, a second electric telescopic rod is fixedly connected to the bracket, a convex ring is provided on the outer wall of the water storage cylinder, the output end of the second electric telescopic rod is connected to the convex ring, and when the second electric telescopic rod is fully extended or shortened, the outer cylinder slides to the two ends of the travel of the water filling pipe.

[0011] Preferably, a support rod is fixedly connected inside the outer cylinder, a double-headed cone is connected to the bottom end of the support rod, two inner cone rings are vertically symmetrically connected inside the water adding pipe, the double-headed cone slides between the two inner cone rings, and when the two cone heads of the double-headed cone fit the upper or lower inner cone ring, the outer cylinder slides to the two ends of the travel of the water adding pipe; When the electromagnetic ring does not absorb the magnetic piston plate, the second electric telescopic rod is in a fully extended state. When the electromagnetic ring absorbs the magnetic piston plate, the second electric telescopic rod is in an incompletely shortened state. The double-headed cone does not contact any of the inner cone rings, so that the water in the water storage cylinder is discharged into the sealing cover.

[0012] Preferably, a scale is provided on the vertical section of the L-shaped tube.

[0013] Preferably, a water level sensor is provided in the vertical section of the L-shaped tube, and when the water level in the L-shaped tube reaches the position of the water level sensor, the second electric telescopic rod is completely shortened so that the double-headed cone fits closely to the inner cone ring at the bottom.

[0014] Preferably, a hole is opened on the vertical section of the L-shaped tube, and when the electromagnetic ring adsorbs the magnetic piston plate, the magnetic piston plate is located above the hole.

[0015] Preferably, the number of the first electric telescopic rods and the number of the second electric telescopic rods are both four, and the four first electric telescopic rods and the four second electric telescopic rods are arranged in a circular array on the bracket.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention moves the device to the steel slag asphalt pavement to be inspected, adds sealing material into the first cylinder, seals the water adding pipe after the sealing material is dried, and then puts a column into the vertical pipe. The column moves downward relative to the vertical pipe due to gravity. If the sealing cover and the steel slag asphalt pavement are sealed, the internal space of the sealing cover is in a closed state. At this time, the air in the sealing cover is compressed and enters the L-shaped tube, so that the magnetic piston plate in the L-shaped tube is pushed upward by gravity to the magnetic adsorption range of the electromagnetic ring, and the distance between the initial position of the column and the second limiting ring is greater than the distance between the first limiting ring and the electromagnetic ring. The spacing between the electromagnetic rings can compensate for the air leakage from the steel slag asphalt pavement. In addition, if there is a gap between the sealing cover and the steel slag asphalt pavement, that is, the sealing material has poor sealing performance, the air in the sealing cover will leak out through the gap between the sealing cover and the steel slag asphalt pavement bracket after the column moves down, so that the magnetic piston plate will not move to the magnetic adsorption range of the electromagnetic ring, so that the sealing state between the sealing cover and the steel slag asphalt pavement can be directly obtained, avoiding the situation that water leaks from the gap between the sealing cover and the steel slag asphalt pavement when water is added to the sealing cover, resulting in inaccurate test results of the water permeability performance of the steel slag asphalt pavement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the support of the present invention; Figure 3 It is a structural schematic diagram of the water storage cylinder of the present invention; Figure 4 It is a structural schematic diagram of the sealing cover of the present invention; Figure 5 It is a structural schematic diagram of the first electric telescopic rod of the present invention; Figure 6 It is a structural schematic diagram of the L-shaped pipe of the present invention; Figure 7 It is a schematic structural diagram of the double-headed cone of the present invention.

[0018] In the figure: 1. bracket; 11. support foot; 2. sealing cover; 21. water supply pipe; 22. first cylinder; 221. first ring; 23. second cylinder; 231. second ring; 3. first electric telescopic rod; 31. gear; 32. slide seat; 33. rack; 34. electric slider; 341. protrusion; 4. L-shaped tube; 41. first limit ring; 411. magnetic piston plate; 42. electromagnetic ring; 43. hole; 44. vertical tube; 45. second limit ring; 46. column; 5. water storage cylinder; 51. protruding ring; 52. second electric telescopic rod; 53. outer cylinder; 54. support rod; 55. double-headed cone; 56. inner cone ring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0020] Reference Figure 1-Figure 7The present embodiment provides a technical solution: a device for detecting water seepage performance of steel slag asphalt pavement, comprising a bracket 1, a support leg 11 is connected to the bottom of the bracket 1, a sealing cover 2 is placed in the middle of the bracket 1, a first cylinder 22 is connected to the outer side of the cover opening of the sealing cover 2, the first cylinder 22 is filled with sealing material, a water supply pipe 21 is connected to the sealing cover 2, an L-shaped pipe 4 is connected to the water supply pipe 21, a vertical pipe 44 is connected to the sealing cover 2, an electromagnetic ring 42 and a first limiting ring 41 are connected in the vertical section of the L-shaped pipe 4, and a sliding connection is located between the electromagnetic ring 42 and the first limiting ring 41. A magnetic piston plate 411 is connected, a second limit ring 45 is fixedly connected in the vertical tube 44, and a column 46 is slidably connected on the upper part of the second limit ring 45; the sealing material fills the gap between the sealing cover 2 and the road surface, when the column 46 slides down the vertical tube 44, the magnetic piston plate 411 slides up relative to the L-shaped tube 4, and, when the sealing cover 2 and the road surface are sealed, the magnetic piston plate 411 slides up to the magnetic adsorption range of the electromagnetic ring 42, and when there is a gap between the sealing cover 2 and the road surface, the magnetic piston plate 411 does not slide up or the sliding distance does not reach the magnetic adsorption range of the electromagnetic ring 42.

[0021] When in use, the device is moved to the steel slag asphalt pavement to be inspected, and sealing material is added to the first cylinder 22. After the sealing material is dried, the water adding pipe 21 is sealed, and then the column 46 is placed in the vertical pipe 44. The column 46 moves downward relative to the vertical pipe 44 due to gravity. If the sealing cover 2 and the steel slag asphalt pavement are sealed, the internal space of the sealing cover 2 is in a closed state. At this time, the air in the sealing cover 2 is compressed and enters the L-shaped tube 4, so that the magnetic piston plate 411 in the L-shaped tube 4 is pushed upward by gravity to the magnetic adsorption range of the electromagnetic ring 42, and the distance between the initial position of the column 46 and the second limit ring 45 is greater than the first limit ring 4. 1 to the electromagnetic ring 42, thereby compensating for the air leaked from the steel slag asphalt pavement. In addition, if there is a gap between the sealing cover 2 and the steel slag asphalt pavement, that is, the sealing material has poor sealing performance, the air in the sealing cover 2 will leak out through the gap between the sealing cover 2 and the steel slag asphalt pavement bracket 1 after the column 46 moves down, so that the magnetic piston plate 411 will not move to the magnetic adsorption range of the electromagnetic ring 42, so that the sealing state between the sealing cover 2 and the steel slag asphalt pavement can be directly obtained, avoiding the situation that when water is added to the sealing cover 2, water leaks from the gap between the sealing cover 2 and the steel slag asphalt pavement, resulting in inaccurate detection results of the water permeability performance of the steel slag asphalt pavement.

[0022] The first cylinder 22 is coaxially connected to the second cylinder 23, and the first cylinder 22 and the second cylinder 23 are respectively slidably connected with the first ring 221 and the second ring 231. The bracket 1 is fixedly connected to the first electric telescopic rod 3, and the output end of the first electric telescopic rod 3 is rotatably connected to the gear 31. Two racks 33 are symmetrically meshed on both sides of the gear 31. A protrusion 341 is provided on the rack 33 located at the upper part of the second cylinder 23. An electric slider 34 is slidably connected to the second cylinder 23, and the electric slider 34 is clamped at the lower part of the protrusion 341. When the electric slider 34 is located at the lower part of the protrusion 341, the first electric telescopic rod 3 is extended to push the first ring 221 downward, so that the sealing material is filled in the sealing material. Between the cover 2 and the road surface, position sensors are provided in the L-shaped tube 4 and the vertical tube 44. The position sensor in the vertical tube 44 detects that the column 46 slides to the second limit ring 45, and when the position sensor in the L-shaped tube 4 detects that the magnetic piston plate 411 moves up to the magnetic attraction range of the electromagnetic ring 42, the electromagnetic ring 42 is energized, and when the position sensor in the vertical tube 44 detects that the column 46 slides to the second limit ring 45, and when the position sensor in the L-shaped tube 4 does not detect that the magnetic piston plate 411 moves up to the magnetic attraction range of the electromagnetic ring 42, the electromagnetic ring 42 is not energized, the electric slider 34 slides out of the lower part of the protrusion 341, and the first electric telescopic rod 3 further extends to push the second circular ring 231 to move downward.

[0023] A film is provided at the lower end of the second cylinder 23. In the initial state, the first electric telescopic rod 3 is controlled to shorten, so that the first ring 221 and the second ring 231 move upward and separate from the first cylinder 22 and the second cylinder 23. At this time, sealing material can be added into the first cylinder 22 and the second cylinder 23. Then, the first electric telescopic rod 3 is controlled to extend. At this time, the electric slider 34 blocks the outer rack 33 from moving downward, and the inner rack 33 drives the first ring 221 to move downward through the transmission of the gear 31, so that the sealing material is further pushed to the The gap between the sealing cover 2 and the steel slag asphalt pavement is formed so that the sealing cover 2 and the steel slag asphalt pavement can be sealed. After the sealing material in the first cylinder 22 is dried, the column 46 is put into the vertical pipe 44 to detect the sealing performance of the sealing cover 2. If the magnetic piston plate 411 is not adsorbed by the electromagnetic ring 42, it means that the sealing performance of the sealing cover 2 is insufficient. At this time, the column 46 is taken out. At the same time, the position sensor in the vertical pipe 44 and the L-shaped tube 4 detects that the column 46 releases the second limit ring 45, and the magnetic piston plate 411 is not adsorbed by the electromagnetic ring 42. 42 contacts, the electric slider 34 slides and moves out of the lower part of the protrusion 341. At this time, since the sealing material in the first cylinder 22 has dried, the sealing material in the second cylinder 23 will not dry due to the sealing of the second ring 231 and the film. Therefore, when the first electric telescopic rod 3 continues to extend, the gear 31 rolls on the internal rack 33 and drives the external rack 33 to move downward, so that the sealing material in the second cylinder 23 is squeezed to break through the film and flow to between the sealing cover 2 and the steel slag asphalt pavement, and the sealing cover 2 and the steel slag asphalt pavement are sealed again, so that the sealing performance between the sealing cover 2 and the steel slag asphalt pavement is repaired. Subsequently, the column 46 is put into the vertical pipe 44 again, and the sealing performance of the sealing cover 2 is tested again. If the sealing performance is still not enough, the sealing material is removed and the test position is transferred, or the sealing material is added to the first cylinder 22 and the second cylinder 23 again to repeat the above operation until the sealing performance meets the standard. Through the above settings, the sealing performance of the sealing cover 2 is tested, and the sealing performance of the sealing cover 2 is automatically repaired when the sealing performance is insufficient.

[0024] The bracket 1 is connected to two slide seats 32 , and two racks 33 slide on the two slide seats 32 respectively.

[0025] The arrangement of the two slide seats 32 limits the sliding direction of the two racks 33 , ensuring that the extension and retraction of the first electric telescopic rod 3 can stably drive the two racks 33 to move up and down.

[0026] A water storage cylinder 5 is provided at the upper part of the bracket 1, and an outer cylinder 53 is connected to the lower part of the water storage cylinder 5. The outer cylinder 53 is slidably connected to the water filling pipe 21. When the outer cylinder 53 slides at both ends of the travel of the water filling pipe 21, the water in the water storage cylinder 5 cannot be discharged to the sealing cover 2.

[0027] The provision of the water storage cylinder 5 enables water to be added to the sealing cover 2, thereby facilitating the detection of the water permeability of the steel slag asphalt pavement. When the sealing performance of the sealing cover 2 is detected, the water storage cylinder 5 is at the uppermost part of the sliding stroke, and when the water permeability of the steel slag asphalt pavement is detected, the water storage cylinder 5 is at the lowermost part of the sliding stroke.

[0028] A second electric telescopic rod 52 is fixedly connected to the bracket 1, a convex ring 51 is provided on the outer wall of the water storage cylinder 5, the output end of the second electric telescopic rod 52 is connected to the convex ring 51, and when the second electric telescopic rod 52 is fully extended or shortened, the outer cylinder 53 slides to the two ends of the travel of the water filling pipe 21.

[0029] The water storage cylinder 5 is lifted by providing the second electric telescopic rod 52 , so that the lifting and lowering of the water storage cylinder 5 can be controlled.

[0030] A support rod 54 is fixedly connected inside the outer cylinder 53, and a double-headed cone 55 is connected to the bottom end of the support rod 54. Two inner cone rings 56 are vertically symmetrically connected inside the water filling pipe 21. The double-headed cone 55 slides between the two inner cone rings 56. When the two cone heads of the double-headed cone 55 fit the upper or lower inner cone ring 56, the outer cylinder 53 slides to the two ends of the stroke of the water filling pipe 21; when the electromagnetic ring 42 does not absorb the magnetic piston plate 411, the second electric telescopic rod 52 is in a fully extended state; when the electromagnetic ring 42 absorbs the magnetic piston plate 411, the second electric telescopic rod 52 is in an incompletely shortened state, and the double-headed cone 55 does not contact any inner cone ring 56, so that the water in the water storage cylinder 5 is discharged into the sealing cover 2.

[0031] When the outer cylinder 53 is at the uppermost part of the sliding stroke, the upper part of the double-headed cone 55 fits with the upper inner cone ring 56, so that the water in the water storage cylinder 5 will not be discharged into the sealing cover 2. At this time, the sealing performance of the sealing cover 2 can be tested. When the sealing performance of the sealing cover 2 meets the requirements, the second electric telescopic rod 52 is not completely shortened, so that the double-headed cone 55 does not contact any inner cone ring 56. At this time, the water in the water storage cylinder 5 can flow into the sealing cover 2, ensuring that the sealing cover 2 can be filled with water to test the water permeability of the steel slag asphalt pavement.

[0032] The vertical section of the L-shaped tube 4 is provided with scales.

[0033] The upper end of the L-shaped tube 4 is higher than the end of the water storage cylinder 5, ensuring that the water filled in the sealing cover 2 will not overflow through the end of the L-shaped tube 4. After the water filling is completed, the water level scale in the L-shaped tube 4 is recorded and timing is performed. After the timing is completed, the water level scale in the L-shaped tube 4 is observed to obtain the water permeability performance of the steel slag asphalt pavement.

[0034] A water level sensor is provided in the vertical section of the L-shaped tube 4 . When the water level in the L-shaped tube 4 reaches the position of the water level sensor, the second electric telescopic rod 52 is completely shortened so that the double-headed cone 55 fits the lower inner cone ring 56 .

[0035] To prevent the water level in the L-shaped tube 4 from being too high, when the water level in the L-shaped tube 4 reaches the position of the water level sensor, the second electric telescopic rod 52 is shortened so that the double-headed cone 55 contacts the lower inner cone ring 56, so that the water in the water storage cylinder 5 no longer flows into the sealing cover 2, thereby ensuring the accuracy of the detection result; In addition, the amount of water in the water storage cylinder 5 is higher than the volume of the sealing cover 2, so that the water storage cylinder 5 can apply pressure to the sealing cover 2, ensuring that the sealing cover 2 and the steel slag asphalt pavement have sufficient pressure to ensure the sealing between the two, and at the same time can resist a certain degree of external force impact that causes the sealing between the sealing cover 2 and the steel slag asphalt pavement to disappear.

[0036] A hole 43 is formed on the vertical section of the L-shaped tube 4 . When the electromagnetic ring 42 attracts the magnetic piston plate 411 , the magnetic piston plate 411 is located above the hole 43 .

[0037] The hole 43 is provided so that the internal space of the sealing cover 2 can be connected to the outside, ensuring that the water level drop in the sealing cover 2 is not affected by the air pressure, and the magnetic piston plate 411 can be located above the hole 43 after the electromagnetic ring 42 adsorbs the magnetic piston plate 411.

[0038] The number of the first electric telescopic rods 3 and the number of the second electric telescopic rods 52 are both four, and the four first electric telescopic rods 3 and the four second electric telescopic rods 52 are all arranged in a ring array on the bracket 1.

[0039] By providing four first electric telescopic rods 3 and four second electric telescopic rods 52 , the water storage cylinder 5 can be stably raised and lowered, and the first ring 221 and the second ring 231 can be raised and lowered by a uniform force.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting water seepage performance of steel slag asphalt pavement, comprising a bracket (1), wherein the bottom of the bracket (1) is connected to a support foot (11), characterized in that: A sealing cover (2) is placed in the middle of the bracket (1); a first cylinder (22) is connected to the outer side of the cover opening of the sealing cover (2); the first cylinder (22) is filled with sealing material; a water supply pipe (21) is connected to the sealing cover (2); an L-shaped pipe (4) is connected to the water supply pipe (21); a vertical pipe (44) is connected to the sealing cover (2); an electromagnetic ring (42) and a first limiting ring (41) are connected in the vertical section of the L-shaped pipe (4); a magnetic piston plate (411) is slidably connected between the electromagnetic ring (42) and the first limiting ring (41); a second limiting ring (45) is fixedly connected in the vertical pipe (44); and a column (46) is slidably connected to the upper part of the second limiting ring (45); The sealing material fills the gap between the sealing cover (2) and the road surface; when the column (46) slides down under the vertical pipe (44), the magnetic piston plate (411) slides up relative to the L-shaped pipe (4); and when the sealing cover (2) and the road surface are sealed, the magnetic piston plate (411) slides up to the magnetic attraction range of the electromagnetic ring (42); when there is a gap between the sealing cover (2) and the road surface, the magnetic piston plate (411) does not slide up or the sliding distance does not reach the magnetic attraction range of the electromagnetic ring (42).

2. The device for detecting water seepage performance of steel slag asphalt pavement according to claim 1 is characterized in that: The first cylinder (22) is coaxially connected to the second cylinder (23); the first cylinder (22) and the second cylinder (23) are slidably connected to a first ring (221) and a second ring (231) respectively; the bracket (1) is fixedly connected to a first electric telescopic rod (3); the output end of the first electric telescopic rod (3) is rotatably connected to a gear (31); two racks (33) are symmetrically meshed on both sides of the gear (31); a protrusion (341) is provided on the rack (33) located on the upper part of the second cylinder (23); an electric slider (34) is slidably connected to the second cylinder (23); the electric slider (34) is clamped to the lower part of the protrusion (341); When the electric slide block (34) is located below the protrusion (341), the first electric telescopic rod (3) is extended to push the first circular ring (221) downward, so that the sealing material is filled between the sealing cover (2) and the road surface. Position sensors are provided in both the L-shaped tube (4) and the vertical tube (44). The position sensor in the vertical tube (44) detects that the column (46) slides to the second limiting ring (45), and the position sensor in the L-shaped tube (4) detects that the magnetic piston plate (411) moves upward to the electromagnetic ring. When the magnetic piston plate (411) is within the magnetic attraction range of the electromagnetic ring (42), the electromagnetic ring (42) is energized, and the position sensor in the vertical tube (44) detects that the column (46) slides to the second limit ring (45), and when the position sensor in the L-shaped tube (4) does not detect that the magnetic piston plate (411) moves up to the magnetic attraction range of the electromagnetic ring (42), the electromagnetic ring (42) is not energized, the electric slider (34) slides out from the lower part of the protrusion (341), and the first electric telescopic rod (3) is further extended to push the second circular ring (231) to move downward.

3. The device for detecting water seepage performance of steel slag asphalt pavement according to claim 2 is characterized in that: The bracket (1) is connected to two slide seats (32), and the two racks (33) slide on the two slide seats (32) respectively.

4. The device for detecting water seepage performance of steel slag asphalt pavement according to claim 3 is characterized in that: A water storage cylinder (5) is arranged at the upper part of the bracket (1), and an outer cylinder (53) is connected to the lower part of the water storage cylinder (5). The outer cylinder (53) is slidably connected to the water filling pipe (21). When the outer cylinder (53) slides at both ends of the travel of the water filling pipe (21), water in the water storage cylinder (5) cannot be discharged to the sealing cover (2).

5. The device for detecting water seepage performance of steel slag asphalt pavement according to claim 4 is characterized in that: A second electric telescopic rod (52) is fixedly connected to the bracket (1); a convex ring (51) is provided on the outer wall of the water storage cylinder (5); an output end of the second electric telescopic rod (52) is connected to the convex ring (51); when the second electric telescopic rod (52) is fully extended or shortened, the outer cylinder (53) slides to the two ends of the travel of the water filling pipe (21).

6. The device for detecting water seepage performance of steel slag asphalt pavement according to claim 5 is characterized in that: A support rod (54) is fixedly connected inside the outer cylinder (53), and a double-headed cone (55) is connected to the bottom end of the support rod (54). Two inner cone rings (56) are vertically symmetrically connected inside the water filling pipe (21), and the double-headed cone (55) slides between the two inner cone rings (56). When the two cone heads of the double-headed cone (55) are attached to the upper or lower inner cone ring (56), the outer cylinder (53) slides to the two ends of the travel of the water filling pipe (21); When the electromagnetic ring (42) does not adsorb the magnetic piston plate (411), the second electric telescopic rod (52) is in a fully extended state; when the electromagnetic ring (42) adsorbs the magnetic piston plate (411), the second electric telescopic rod (52) is in an incompletely shortened state, and the double-headed cone (55) does not contact any of the inner cone rings (56), so that water in the water storage cylinder (5) is discharged into the sealing cover (2).

7. The device for detecting water seepage performance of steel slag asphalt pavement according to claim 6 is characterized in that: The vertical section of the L-shaped tube (4) is provided with a scale.

8. The device for detecting water seepage performance of steel slag asphalt pavement according to claim 7, characterized in that: A water level sensor is provided in the vertical section of the L-shaped tube (4); when the water level in the L-shaped tube (4) reaches the position of the water level sensor, the second electric telescopic rod (52) is completely shortened so that the double-headed cone (55) fits closely to the inner cone ring (56) at the bottom.

9. The device for detecting water seepage performance of steel slag asphalt pavement according to claim 8, characterized in that: A hole (43) is provided on the vertical section of the L-shaped tube (4), and when the electromagnetic ring (42) adsorbs the magnetic piston plate (411), the magnetic piston plate (411) is located above the hole (43).

10. The device for detecting water seepage performance of steel slag asphalt pavement according to claim 9, characterized in that: The number of the first electric telescopic rods (3) and the number of the second electric telescopic rods (52) are both four, and the four first electric telescopic rods (3) and the four second electric telescopic rods (52) are arranged in a ring array on the bracket (1).

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