A device for testing the surface dryness of sand-containing fog seal layer

Abstract

The present application relates to a device for testing the surface dryness of a sand-containing fog seal layer, and relates to the technical field of road maintenance; the device comprises a frame, a counterweight is arranged on the frame, a test paper for contacting the surface of the fog seal layer is arranged on the counterweight, and a driving component is also arranged on the frame, and the driving component is used to drive the counterweight to slide relative to the frame, so that the counterweight falls under the action of its own weight until it contacts the surface of the fog seal layer; the present application has the effect of improving the accuracy of the detection of the surface dryness of the fog seal layer.

Description

Technical Field

[0001] The present application relates to the technical field of road maintenance, and in particular to a device for testing the surface dryness of a sand-containing fog seal layer. Background Art

[0002] In recent years, my country's highway construction has made significant progress. With the gradual increase in road network density, my country's highway development concept has gradually changed from construction to maintenance. The traditional maintenance concept in China is to wait until the highway has serious disease phenomena before overhauling it. On the one hand, this will waste huge manpower, material and financial resources, and on the other hand, it will also affect the normal operation of the highway. Therefore, in recent years, the concept of preventive maintenance has been gradually introduced from abroad. It is to carry out maintenance operations when the highway has minor diseases, so as to delay the overhaul time of the highway and reduce the cost of the whole life cycle.

[0003] Fog seal is a commonly used preventive maintenance technology. In practical projects, the surface dryness of the fog seal material will affect the opening of traffic. At present, there is no unified standard or unified test method for the surface dryness of the fog seal material. The existing test of the surface dryness of the fog seal generally adopts the "finger touch method", that is, pressing the surface of the fog seal material with a finger to evaluate the surface dryness of the fog seal based on whether the finger is stained with fog seal material. This method is simple and convenient to operate, but the "finger touch method" varies from person to person, and different pressing strengths lead to inconsistent finger touch areas; ultimately, it leads to large errors in the test results and low detection accuracy. Summary of the invention

[0004] In order to improve the accuracy of the detection of the surface dryness of the fog seal layer, the present application provides a device for testing the surface dryness of the sand-containing fog seal layer.

[0005] The present application provides a device for testing the surface dryness of a sand-containing fog seal layer, which adopts the following technical solution:

[0006] A device for testing the surface dryness of a sand-containing fog seal layer comprises a frame, a counterweight block is arranged on the frame, a test paper for contacting the surface of the fog seal layer is arranged on the counterweight block, and a driving component is also arranged on the frame, and the driving component is used to drive the counterweight block to slide relative to the frame so that the counterweight block falls under the action of its own weight until it contacts the surface of the fog seal layer.

[0007] By adopting the above-mentioned technical scheme, the present application utilizes a driving component to drive the counterweight block to slide in order to achieve contact with the surface of the fog seal layer. At this time, the test paper will be directly in contact with the surface of the fog seal layer driven by the movement of the counterweight block. After a specified period of contact, the counterweight block is driven to disengage from the pressure on the surface of the fog seal layer. At this time, the surface dryness of the fog seal layer can be detected by observing whether the test paper is adhered to the fog seal layer material and the bonding area. The advantage of using this scheme instead of manual pressure is that, since the sliding drive of the counterweight block by the driving component is controllable, the sliding stroke of the counterweight block can be controlled by a machine. Therefore, in multiple detection processes, the pressure of the counterweight block of this scheme on the fog seal layer can be kept consistent, so that the surface dryness of the fog seal layer and its changes can be determined based on the test paper surface measured under multiple pressures of the same force, thereby providing test accuracy.

[0008] Preferably, the surface of the counterweight block on one side in contact with the surface of the fog seal layer is an arc surface, the test paper is located on the outer periphery of the arc surface and can be attached to the arc surface; a paper changing assembly is provided on the frame, and the paper changing assembly is used to drive the test paper to move around the arc surface of the counterweight block to replace the test paper attached to the arc surface; the paper changing assembly at least includes a unwinding roller rotatably connected to the frame, a winding roller rotatably connected to the frame, and a rotating part for driving the unwinding roller and the winding roller to rotate.

[0009] By adopting the above technical solution, since multiple rounds of testing are generally required when testing the surface dryness of the fog seal layer, and each round requires a test paper, the test paper must be replaced during the period. For this reason, the present application specially arranges the above-mentioned paper changing assembly to realize convenient paper changing and improve paper changing efficiency.

[0010] Preferably, the driving assembly includes a first lifting member, a second lifting member, a movable frame and a docking rod, the paper changing assembly is arranged on the movable frame, the docking rod passes through the movable frame and is slidably connected to the movable frame, and the end of the docking rod away from the driving frame is connected to the counterweight block; the first lifting member is used to drive the movable frame to move so that the counterweight block is out of contact with the surface of the fog seal layer, or contacts with the surface of the fog seal layer; the second lifting member is used to drive the docking rod to rise and fall relative to the movable frame.

[0011] By adopting the above technical solution, before the test, the second driving member drives the docking rod to slide relative to the movable frame, and the counterweight block is separated from the contact with the test paper, and then the movable frame is driven to move upward by the first driving member, so that the counterweight block and the test paper are moved upward as a whole and are in a suspended state. During the upward movement of the movable frame, the test paper can be replaced by the paper changing assembly, and because the counterweight block and the test paper are not in contact with each other at this time, the friction during the movement of the test paper is correspondingly reduced, which plays a role in protecting the test paper. When the test is required, the counterweight block is driven downward by the second lifting member and fits with the test paper again, and the counterweight block and the test paper are driven downward by the first lifting member until they are in contact with the surface of the fog sealing layer, and then the subsequent test operation is carried out.

[0012] Preferably, the paper changing assembly also includes a protective shell, the unwinding roller and the winding roller correspond to a protective shell respectively, and the unwinding roller and the winding roller are both located in the corresponding protective shell, and the test paper can pass through the preset through hole in the side wall of the protective shell, and contact the arc surface of the counterweight block after bypassing the surface of the protective shell.

[0013] By adopting the above technical scheme, the setting of the protective shell can, on the one hand, protect the test paper and prevent it from being contaminated, thereby ensuring that the test paper is clean and complete to avoid affecting the test results. On the other hand, due to the increase in the number of tests, the unwinding roller continuously unwinds the test paper and the winding roller continuously winds up the test paper, the outer diameters of the unwinding roller with the test paper wound on it and the winding roller with the test paper wound on it will change, thereby causing the placement position of the test paper between the unwinding roller and the winding roller to change, which may easily lead to the arc surface of the counterweight block being unable to fully fit with the test paper. Therefore, the design of the protective shell can limit the trajectory of the test paper, so that the test paper can bypass the surface of the protective shell and then bypass the arc surface position of the counterweight block, thereby ensuring that the arc surface of the counterweight block can fit with the test paper.

[0014] Preferably, the paper changing assembly also includes a conveying roller group rotatably connected to the inner wall of each protective shell through hole, the conveying roller group includes two docking rollers, and a gap is reserved between the two docking rollers belonging to the same conveying roller group for only a single layer of test paper to pass through.

[0015] By adopting the above technical solution, the docking roller can rotate at the same time as the unwinding roller and the winding roller rotate. Since the test paper passes through the gap between the two docking rollers of the conveying roller group, the test paper can be conveyed when the docking roller rotates. At the same time, this setting also reduces the wear of the inner wall of the through hole on the test paper when it moves.

[0016] Preferably, a flexible cushion layer is provided on the peripheral wall of the docking roller and the arc surface of the counterweight block.

[0017] By adopting the above technical solution, the setting of the flexible cushion layer can play a buffering role when the counterweight block descends to contact the test paper again, and when the counterweight block drives the test paper to come into contact with the surface of the fog seal layer. In addition, the setting of the flexible cushion layer can also play a buffering role and reduce wear when the docking roller contacts the test paper.

[0018] Preferably, a cleaning component is further included, wherein the cleaning component includes a fan, and an air outlet of the fan is arranged toward the test paper.

[0019] By adopting the above technical solution, a fan is set to purge the surface of the test paper, so as to further reduce the possibility of dirt on the surface of the test paper without damaging the surface of the test paper.

[0020] Preferably, the cleaning assembly also includes a linkage frame, a linkage rod, a linkage gear, a connecting rope, and a linkage rack; the linkage frame is connected to one side of the movable frame close to the unwinding roller, the linkage rod is rotatably connected to the linkage frame, and one end of the connecting rope is wrapped around the linkage rod, and the other end is connected to the fan, the fan is slidably connected to the linkage frame along the length direction of the linkage frame, and during the sliding process of the fan, the fan outlet is always facing the test paper; the linkage gear is fixedly sleeved on the linkage rod, the linkage rack is connected to the frame, and the linkage rack is meshed with the linkage gear.

[0021] By adopting the above technical solution, it can be known from the driving principle of the aforementioned driving assembly that before the movable frame moves up, the counterweight block has already slid relative to the movable frame and is out of contact with the test paper. At this time, the movable frame moves up, and the linkage gear moves up with the movable frame, and rotates under the meshing action of the linkage rack, thereby causing the linkage rod to rotate and the connecting rope to be wound or released by the linkage rod, thereby causing the fan to slide and purge the surface of the test paper during the sliding process, thereby optimizing the purge area of ​​the test paper.

[0022] Preferably, it also includes a controller, a camera device and a timer, the drive assembly and the paper changing assembly are both controlled by the controller, the camera device and the timer are electrically connected to the controller, the camera device is arranged close to the winding roller to be used for taking an image of the surface of one side of the test paper that moves from the arc surface of the counterweight block to the winding roller and contacts the surface of the fog sealing layer, the controller is used to obtain the image taken by the camera device and display it; the controller is also used to control the timer to start when the test paper that is attached to the arc surface of the counterweight block and its arc surface hits the surface of the fog sealing layer, and when the timing duration reaches a specified duration, the timer is turned off and the drive assembly is started to drive the counterweight block and the test paper to move out of the fog sealing layer.

[0023] By adopting the above technical solution, the setting of the timer can achieve precise control of the contact time between the test paper and the surface of the fog seal layer, ensuring the consistency of the detection time of multiple rounds of detection, thereby improving the detection accuracy. In addition, the setting of the camera equipment can realize the automatic shooting and display of the fog seal layer mark on the test paper, thereby improving the overall automation level of the detection.

[0024] Preferably, the controller is also electrically connected to a distance measuring sensor, which is used to detect whether the test paper attached to the counterweight block and its curved surface is in contact with the surface of the fog seal layer. The controller is used to obtain the detection result of the distance measuring sensor and control whether the timer is started based on the detection result.

[0025] By adopting the above technical solution, a distance measuring sensor is set to more accurately control whether the test paper attached to the counterweight block and its curved surface is in contact with the surface of the fog seal layer, so that the controller can start the timer at the moment when the counterweight block and its curved surface are in contact with the surface of the fog seal layer, so that the timing duration is as consistent as possible with the contact duration when the counterweight block and its curved surface are in contact with the surface of the fog seal layer.

[0026] In summary, this application includes the following beneficial technical effects:

[0027] The present application utilizes a driving component to drive the counterweight to slide in order to achieve contact with the surface of the fog seal layer. At this time, the test paper will be driven by the movement of the counterweight to directly contact the surface of the fog seal layer. After a specified period of contact, the counterweight is driven to disengage from the pressure on the surface of the fog seal layer. At this time, the surface dryness of the fog seal layer can be detected by observing whether the test paper is adhered to the fog seal material and the area of ​​adhesion. The advantage of using this scheme instead of manual pressure is that the sliding drive of the counterweight by the driving component is controllable, and therefore the sliding stroke of the counterweight can be controlled by a machine. Therefore, in multiple detection processes, the pressure of the counterweight on the fog seal layer in this scheme can be kept consistent, so that the surface dryness of the fog seal layer and its changes can be determined based on the test paper surface measured under multiple pressures of the same force, thereby providing test accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of a device for testing the surface dryness of a sand-containing fog seal layer disclosed in an embodiment of the present application.

[0029] Figure 2 yes Figure 1 Sectional view along AA direction.

[0030] Figure 3 It is a structural block diagram of a device for testing the surface dryness of a sand-containing fog seal layer disclosed in an embodiment of the present application.

[0031] Figure 4It is a schematic diagram used to illustrate the structure of the cleaning component in the embodiment of the present application.

[0032] Explanation of the accompanying drawings: 1. frame; 2. counterweight; 21. flexible cushion; 3. test paper; 4. driving assembly; 41. movable frame; 42. docking rod; 43. first lifting member; 431. driving plate; 432. first motor; 433. first screw rod; 44. second lifting member; 5. controller; 51. camera device; 52. timer; 53. distance measuring sensor; 6. paper changing assembly; 61. unwinding roller; 62. winding roller; 63. rotating member; 64. protective shell; 641. through hole; 65. conveying roller group; 651. docking roller; 7. cleaning assembly; 71. fan; 72. linkage frame; 73. linkage rod; 74. linkage gear; 75. connecting rope; 76. linkage rack. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-4 This application is described in further detail.

[0034] The present application embodiment discloses a device for testing the surface dryness of a sand-containing fog seal layer. Figure 1 and Figure 2 The surface dryness test device of the sand-containing fog seal layer comprises a frame 1, and a counterweight block 2, a test paper 3 and a driving assembly 4 are arranged inside the frame 1. The lower surface of the counterweight block 2 is a part used to conflict with the surface of the fog seal layer, and it has a curved surface; illustratively, the cross-section of the counterweight block 2 in the embodiment of the present application is circular, and the test paper 3 is attached to the curved surface of the counterweight block 2, and the test paper 3 attached to the curved surface of the counterweight will be used to conflict with the surface of the fog seal layer, and the surface dryness of the fog seal layer is determined by observing whether there is a fog seal layer material on the surface of the test paper 3 after the conflict with the fog seal layer; the driving assembly 4 is used to drive the counterweight block 2 and the test paper 3 to move, and the embodiment of the present application specifically moves up and down, so that the counterweight block 2 and the test paper 3 conflict with the surface of the fog seal layer during the downward movement, thereby realizing the detection of the surface dryness of the fog seal layer.

[0035] Reference Figure 1 and Figure 2The driving assembly 4 includes a movable frame 41, a docking rod 42, a first lifting member 43 and a second lifting member 44; the first lifting member 43 is installed in the frame 1 and is used to drive the movable frame 41 to slide in the vertical direction. Specifically, the first lifting member 43 may include a first motor 432 and a first screw rod 433. The first motor 432 is installed on the frame 1, the first motor 432 is connected to the end of the first screw rod 433, the first screw rod 433 is rotatably connected to the frame 1, and a driving member is threadedly sleeved on the first screw rod 433. Plate 431, the driving plate 431 is located below one end of the movable frame 41, so as to drive the movable frame 41 to lift after the driving plate 431 moves up to contact with the lower surface of the movable frame 41, and when the driving plate 431 moves down and breaks away from the contact with the lower surface of the movable frame 41, the movable frame 41 will move down under the action of its own weight, and when it moves down to make the counterweight block 2 contact with the surface of the fog sealing layer, the driving plate 431 can always be out of contact with the lower end of the movable frame 41, that is, the driving plate 431 is prevented from hindering the downward movement of the movable frame 41.

[0036] The docking rod 42 is connected to the movable frame 41 by sliding in the vertical direction, and the lower end of the docking rod 42 passes through the movable frame 41 and is connected to the counterweight 2, and the upper end of the docking rod 42 is connected to the driving end of the second lifting member 44, and the second lifting member 44 can be specifically a cylinder installed on the movable frame 41; when the second lifting member 44 is not started, the arc surface of the counterweight 2 is in contact with the test paper 3, and when the second lifting member 44 is started, the counterweight 2 moves up and breaks away from the contact with the test paper 3.

[0037] Reference Figure 1 , Figure 2 and Figure 3 , further comprising a controller 5, a camera device 51, a timer 52 and a distance sensor 53. The controller 5 may be a PLC controller. The camera device 51, the timer 52 and the distance sensor 53 are all electrically connected to the controller 5, and the driving assembly 4 is controlled by the controller 5. Specifically, the camera device 51 is mounted on the movable frame 41, and the camera end of the camera device 51 faces the side of the test paper 3 that contacts the surface of the fog sealing layer, so as to capture the image of the surface of the test paper 3 after the surface of the fog sealing layer is in conflict with the surface of the fog sealing layer, and transmit it to the controller 5. The controller 5 is pre-connected with a display to display the received image on the display.

[0038] The controller 5 is used to start the distance measuring sensor 53 when the first lifting member 43 drives the driving plate 431 to move downward. The distance measuring sensor 53 is fixedly installed on the frame 1 and is used to detect the distance value between it and the movable frame 41, and transmit the distance value to the controller 5. The controller 5 is used to receive and judge the change of the distance value over time in real time. When the distance value stops changing, it means that the counterweight block 2 on the movable frame 41 stops moving downward and has contacted the surface of the fog sealing layer. At this time, the controller 5 will start the timer 52 and the pipe wall distance measuring sensor 53. The controller 5 is also used to control the timer 52 to turn off when the timing duration of the timer 52 reaches a specified duration, and control the second lifting member 44 to start and drive the counterweight block 2 to separate from the test paper 3, and then control the first lifting member 43 to drive the counterweight block 2 and the test paper 3 to move upward as a whole, so that the test paper 3 is separated from the contact with the fog sealing layer to complete the detection.

[0039] Reference Figure 1 and Figure 2 , the frame 1 is also provided with a paper changing assembly 6, which can be controlled by the controller 5. The paper changing assembly 6 includes an unwinding roller 61, a winding roller 62, a rotating member 63, a protective shell 64, and a conveying roller group 65; the unwinding roller 61 and the winding roller 62 are both rotatably connected to the movable frame 41, and the rotating member 63 is used to drive the unwinding roller 61 and the winding roller 62 to rotate synchronously, and specifically, the rotating member 63 can be two motors, and the rotation of the unwinding roller 61 and the winding roller 62 is realized by connecting the motor driving end to the unwinding roller 61 and the winding roller 62, so that the unwinding roller 61 releases the test paper 3 wound on its surface when rotating, and the winding roller 62 winds the test paper 3 released by the unwinding roller 61.

[0040] Reference Figure 2 The unwinding roller 61 and the winding roller 62 correspond to a protective shell 64 and a conveying roller group 65 respectively. The protective shell 64 is a hollow shell with an arc surface on the outer surface. The unwinding roller 61 and the winding roller 62 are both inserted into the corresponding protective shell 64. The side wall of the protective shell 64 is provided with a through hole 641 for the test paper 3 to pass through. The conveying roller group 65 is located at the corresponding through hole 641. The conveying roller group 65 specifically includes two docking rollers 651. The two docking rollers 651 are rotatably connected to the inner wall of the corresponding through hole 641, and a gap is reserved between the two docking rollers 651 for only a single layer of test paper 3 to pass through, that is, the two docking rollers 651 are used to clamp the test paper 3. A flexible cushion layer 21 is fixedly connected to the peripheral wall of the docking roller 651 and the arc surface of the counterweight 2. The flexible cushion layer 21 can specifically be EVA foam.

[0041] Reference Figure 2 , Figure 3 and Figure 4, and also includes a cleaning component 7, which can be controlled by the controller 5. The cleaning component 7 includes a fan 71, a linkage frame 72, a linkage rod 73, a linkage gear 74, a connecting rope 75, and a linkage rack 76. The linkage frame 72 is fixedly connected to the side wall of the movable frame 41 near the unwinding roller 61, the linkage rod 73 is rotatably connected to the linkage frame 72, the linkage gear 74 is fixedly sleeved on the linkage rod 73, the linkage rack 76 is meshed with the linkage gear 74, and the linkage rack 76 is fixedly connected to the frame 1, and the length direction of the linkage rack 76 is parallel to the sliding direction of the movable frame 41 when sliding in the vertical direction; the fan 71 is slidably connected to the linkage frame 72 along the length direction of the linkage frame 72, and during the sliding process of the fan 71, the air outlet of the fan 71 is always facing the surface of the test paper 3 that is in contact with the fog sealing layer, one end of the connecting rope 75 is connected to the fan 71, and the other end is connected to the fan 71. The end is wound around the linkage rod 73. In addition, in order to enable the fan 71 to slide to the end of the linkage frame 72 away from the linkage rod 73, a torsion spring can be sleeved on the linkage rod 73, so that one end of the torsion spring is fixedly connected to the linkage rod 73, and the other end is fixedly connected to the linkage frame 72, and it is ensured that when the torsion spring is not deformed, the fan 71 is located at the end of the linkage frame 72 away from the linkage rod 73. Then, when the connecting rope 75 is wound by the linkage rod 73 and pulls the fan 71, the fan 71 will be able to move in the direction close to the linkage rod 73, and when the linkage rod 73 rotates in the opposite direction, it will slide and reset in the direction away from the linkage rod 73 under the action of the elastic force of the torsion spring and its own weight.

[0042] The implementation principle of a device for testing the surface dryness of a sand-containing fog seal layer in an embodiment of the present application is as follows: before the test, the driving plate 431 is driven to move upward by the first lifting member 43, and the movable frame 41 is lifted, so that the counterweight block 2 and the paper changing assembly 6 are both in a suspended state, that is, located above the fog seal layer to be tested; then the unused test paper 3 is wound on the unwinding roller 61, and the free end of the test paper 3 passes through the through hole 641 of the protective shell 64, and after being limited by the outer surface of the protective shell 64, it moves to the counterweight block 2, and after bypassing the counterweight block 2, it is wound on the winding roller 62, and it is ensured that the test paper 3 is in a tensioned state, so that the test paper 3 fits the curved surface on the counterweight block 2.

[0043] Then, the controller 5 starts the first lifting member 43 and the distance sensor 53, and the movable frame 41 is driven downward by the first lifting member 43. During this process, the distance sensor 53 will detect the distance between it and the movable frame 41 in real time. When the distance value no longer changes, it means that the counterweight 2 and the test paper 3 on its surface are in contact with the surface of the fog seal layer and are blocked by the road and cannot move downward. At this time, the controller 5 will turn off the distance sensor 53 and start the timer 52. When the timing reaches the specified time, the controller 5 will turn off the timer 52 and start the second lifting member 44, driving the counterweight 2 to move upward relative to the movable frame 41, so that the counterweight 2 Break away from contact with the test paper 3, then start the first lifting member 43, the camera device 51, and the fan 71, and control the paper changing assembly 6 to drive the test paper 3 to move a specified distance and then stop. During this process, since the first lifting member 43 is started and drives the movable frame 41 to move, the fan 71 will slide relative to the movable frame 41 and blow clean the test paper 3. In addition, the camera device 51 can capture multiple images of the test paper 3 at a specified shooting frequency during the movement of the test paper 3, and display them on the display; the controller 5 is also used to turn off the first lifting member 43, the camera device 51, and the fan 71 after the first lifting member 43 is started for a specified period of time to complete the detection.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A device for testing the surface dryness of a sand-containing fog seal layer. Features: The invention comprises a frame (1), a counterweight (2) being arranged on the frame (1), a test paper (3) being arranged on the counterweight (2) for contacting the surface of the fog seal layer, and a driving assembly (4) being arranged on the frame (1), the driving assembly (4) being used to drive the counterweight (2) to slide relative to the frame (1), so that the counterweight (2) falls under the action of its own weight until it contacts the surface of the fog seal layer; The frame (1) is provided with a paper changing assembly (6), and the paper changing assembly (6) is used to drive the test paper (3) to move around the arc surface of the counterweight (2) to replace the test paper (3) that is in contact with the arc surface; the paper changing assembly (6) includes a protective shell (64), and the test paper (3) passes through a through hole (641) preset in the side wall of the protective shell (64), and contacts the arc surface of the counterweight (2) after bypassing the surface of the protective shell (64); the paper changing assembly (6) also includes a reeling roller (61) rotatably connected to the frame (1), a reeling roller (62) rotatably connected to the frame (1), and a rotating member (63) for driving the reeling roller (61) and the reeling roller (62) to rotate; the reeling roller (61) and the reeling roller (62) respectively correspond to a protective shell (64), and the reeling roller (61) and the reeling roller (62) are both located in the corresponding protective shell (64); The driving assembly (4) comprises a first lifting member (43), a second lifting member (44), a movable frame (41) and a docking rod (42); the paper changing assembly (6) is arranged on the movable frame (41); the docking rod (42) is slidably connected to the movable frame (41) in a vertical direction, and the lower end of the docking rod (42) passes through the movable frame (41) and is connected to the counterweight (2); the first lifting member (43) is used to drive the movable frame (41) to move so that the counterweight (2) is separated from the contact with the surface of the fog sealing layer, or contacts the surface of the fog sealing layer; the second lifting member (44) is used to drive the docking rod (42) to rise and fall relative to the movable frame (41); The cleaning device also includes a cleaning component (7), the cleaning component (7) includes a fan (71), and the air outlet of the fan (71) is arranged toward the test paper (3); the cleaning component (7) also includes a linkage frame (72), a linkage rod (73), a linkage gear (74), a connecting rope (75) and a linkage rack (76); the linkage frame (72) is connected to one side of the movable frame (41) near the unwinding roller (61), the linkage rod (73) is rotatably connected to the linkage frame (72), and the connecting rope (75) is connected to the movable frame (41) and the connecting rope (75) is connected to the movable frame (41) and the connecting rod (73) is rotatably connected to the linkage frame (72), and the connecting rope (75) is connected to the movable frame (41) and the connecting rod (73) is connected to the movable frame (41) ... ) one end of which is wound around the linkage rod (73), and the other end is connected to the fan (71); the fan (71) is connected to the linkage frame (72) by sliding along the length direction of the linkage frame (72), and during the sliding process of the fan (71), the air outlet of the fan (71) is always facing the test paper (3); the linkage gear (74) is fixedly sleeved on the linkage rod (73), the linkage rack (76) is connected to the movable frame (41), and the linkage rack (76) is meshed with the linkage gear (74); It also includes a camera device (51), which is used to capture an image of the surface of one side of the test paper (3) moving from the arc surface of the counterweight block (2) to the winding roller (62) and in contact with the surface of the fog seal layer; The movable frame (41) is driven downward by the first lifting member (43), so that the counterweight (2) and the test paper (3) on its surface are in contact with the surface of the fog seal layer for a specified time, and then the second lifting member (44) is started to drive the counterweight (2) to move upward relative to the movable frame (41), so that the counterweight (2) is separated from the contact with the test paper (3), and then the first lifting member (43), the camera device (51), and the fan (71) are started, and the paper changing assembly (6) is controlled to drive the test paper (3) to move a specified distance and then stop. In this process, since the first lifting member (43) is started and drives the movable frame (41) to move, the fan (71) slides relative to the movable frame (41) and blows and cleans the test paper (3); By controlling the sliding stroke of the counterweight (2), the pressure of the counterweight (2) on the fog seal layer is kept consistent during multiple testing processes, and the surface dryness of the fog seal layer and its changes are determined based on the surface of the test paper (3) measured under multiple pressures of the same intensity.

2. The device for testing the surface dryness of the sand-containing fog seal layer according to claim 1, Features: The surface of the counterweight (2) on one side in contact with the surface of the fog sealing layer is a curved surface, and the test paper (3) is located on the periphery of the curved surface and is attached to the curved surface.

3. The device for testing the surface dryness of the sand-containing fog seal layer according to claim 2, Features: The paper changing assembly (6) further comprises a conveying roller group (65) rotatably connected to the inner wall of the through hole (641) of each protective shell (64), wherein the conveying roller group (65) comprises two docking rollers (651), and a gap is reserved between the two docking rollers (651) belonging to the same conveying roller group (65) so that only a single layer of test paper (3) can pass through.

4. The device for testing the surface dryness of the sand-containing fog seal layer according to claim 3, Features: A flexible cushion layer (21) is provided on the peripheral wall of the docking roller (651) and the arc surface of the counterweight block (2).

5. The device for testing the surface dryness of the sand-containing fog seal layer according to claim 1, Features: The invention also comprises a controller (5) and a timer (52), wherein the driving component (4) and the paper changing component (6) are both controlled by the controller (5), the camera device (51) and the timer (52) are electrically connected to the controller (5), the camera device (51) is arranged close to the winding roller (62), and the controller (5) is used to obtain the image taken by the camera device (51) and display it; the controller (5) is also used to control the timer (52) to start when the test paper (3) attached to the counterweight block (2) and its curved surface contacts the surface of the fog sealing layer, and when the timing time reaches a specified time, the timer (52) is turned off and the driving component (4) is started to drive the counterweight block (2) and the test paper (3) to move away from the fog sealing layer.

6. The device for testing the surface dryness of the sand-containing fog seal layer according to claim 5, Features: The controller (5) is also electrically connected to a distance sensor (53), and the distance sensor (53) is used to detect whether the test paper (3) attached to the counterweight (2) and its arc surface is in contact with the surface of the fog seal layer. The controller (5) is used to obtain the detection result of the distance sensor (53), and based on the detection result, control whether the timer (52) is started or not.

Images