Asphalt pavement crack repairing method

Abstract

The invention belongs to the technical field of road maintenance, and particularly relates to an asphalt pavement crack repairing method which comprises the following steps: S1, removing dust and sundries at a crack position; s2, a mixture of hot asphalt, a warm mixing agent and a regenerant is poured into the crack through a crack pouring device; s3, performing microwave heating on the asphalt at the crack position to soften the asphalt at the crack position; s4, clean gravels are evenly laid on the surfaces of the cracks, and the laying thickness is 2-5 cm; s5, carrying out vibration rolling on the crack position so as to eliminate the crack; and S6, after the asphalt at the crack position is cooled, the crack repairing condition is detected through a radar monitoring device. According to the crack pouring device, only the length of the crack needs to be measured and set through the stroke control assembly, and during crack pouring, the stroke control assembly drives the sliding base, the fixed pressing plate and the spray head to reciprocate along the length of the crack, so that the crack pouring process is more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of highway maintenance, and particularly to a method for repairing cracks in asphalt pavements. Background Art

[0002] During the public construction of roads, due to long-term exposure to the sun and the rolling of various vehicles, cracks are likely to appear on the roads. If the cracks are not repaired or maintained in a timely manner, the cracks will expand or the entire section of the road will be damaged. To avoid such road damage, it is necessary to repair the cracks in the road.

[0003] The existing repair methods for asphalt pavements mainly involve crack filling. Since the length of each crack on the road surface is random, and the existing crack filling devices used in the repair cannot flexibly fill the cracks according to the length of the cracks, inaccurate crack filling will occur during crack filling, which will also affect the repair progress. Therefore, improvements are made to address this problem. Summary of the Invention

[0004] Based on the technical problems existing in the prior art, the present invention proposes a method for repairing cracks in asphalt pavements.

[0005] A method for repairing cracks in asphalt pavements proposed by the present invention includes the following steps:

[0006] S1. Remove the dust and debris at the crack position;

[0007] S2. Pour a mixture of hot asphalt, warm mix agent and regenerant into the crack through a crack filling device;

[0008] S3. Microwave heat the asphalt at the crack position to soften the asphalt at the crack position;

[0009] S4. Uniformly lay clean gravel on the crack surface, with a laying thickness of 2 - 5 cm;

[0010] S5. Vibration roll the crack position to eliminate the crack;

[0011] S6. After the asphalt at the crack position cools down, detect the crack repair situation through a radar monitoring device.

[0012] Preferably, the crack filling device includes a table board, a plurality of universal wheels are installed at the bottom of the table board, a handle is fixed on the top of the table board, a sliding frame is provided on the table board, a sliding seat is slidably connected in the sliding frame, a fixed pressing plate that can move up and down is arranged below the sliding seat, a nozzle is fixed in the mounting opening on the fixed pressing plate, a material box is fixed on the top of the table board, and a hose is connected between the discharge end of the material box and the nozzle. The sliding seat reciprocates along the sliding frame within a determined stroke range through a stroke control component.

[0013] Preferably, the stroke control assembly includes a screw rod rotatably connected to the carriage. The screw rod is threadedly connected to the sliding seat. One end of the carriage is fixed with a first motor, and the output shaft of the first motor is connected to the screw rod. The first motor is directly controlled by the control panel.

[0014] Preferably, the stroke control assembly includes a push rod motor fixedly installed through one end of the carriage. The output shaft of the push rod motor is connected to the sliding seat. The push rod motor is directly controlled by the control panel.

[0015] Preferably, a hanging plate is fixed to the side of the sliding seat. A second motor is fixed to the hanging plate. The output shaft of the second motor is connected with a cam. An insertion plate is inserted at the bottom end of the sliding seat, and the insertion plate is fixedly connected to the fixed pressure plate. A first spring is connected between the hanging plate and the fixed pressure plate. A guide post fixed to the fixed pressure plate is arranged through the hanging plate.

[0016] Preferably, one end of the fixed pressure plate is rotatably connected with a moving pressure plate. A first ear block is fixed to the top of the fixed pressure plate, and a second ear block is fixed to the top of the moving pressure plate. A stud whose end can be inserted into the second ear block is threadedly connected to the first ear block.

[0017] Preferably, a T-shaped column is fixed to the top of the fixed pressure plate, and a pull rope is fixed to the T-shaped column. A hanging ring is fixed to the top of the moving pressure plate.

[0018] Preferably, a push plate is arranged in the material box. A push rod passing through the material box is fixed to the rear end of the push plate. A fixed frame is fixed to the rear end of the table board. A lead screw is rotatably connected to the fixed frame. The lead screw is threadedly connected to the push rod. The lead screw is connected with a driving and rotating assembly for driving the lead screw to rotate directionally.

[0019] Preferably, a connecting rod is inserted into the table board. The connecting rod is elastically connected to the table board through a plurality of second springs. A rack is fixed to the top end of the connecting rod. The rear end of the lead screw is connected with a gear through a one-way bearing. The gear is meshed with the rack. An insertion rod is arranged at the bottom end of the connecting rod. The insertion rod is connected to the sliding seat through an implicated assembly. When the cam rotates, the cam periodically jacks up the insertion rod.

[0020] Preferably, the implicated assembly includes a pair of L-shaped plates fixed to the sliding seat. The end of the insertion rod is of a T-shaped structure. The end of the insertion rod is inserted between the two L-shaped plates. The bottom end of the connecting rod is sleeved on the insertion rod.

[0021] Compared with the prior art, the present invention provides a method for repairing asphalt pavement cracks, having the following beneficial effects:

[0022] 1. A method for repairing cracks in an asphalt pavement. By setting a stroke control component, the device is moved to the crack position, and the nozzle is adjusted to align with the crack position. Then, the length of the crack is measured and set by the stroke control component. During crack filling, the mixture in the material box is pressed into the hose and flows from the nozzle to the crack. The stroke control component drives the sliding seat, fixed pressure plate, and nozzle to reciprocate along the length of the crack, making the crack filling process more precise.

[0023] 2. A method for repairing cracks in an asphalt pavement. By setting a fixed pressure plate that can move up and down, the second motor is started simultaneously during crack filling. The output shaft of the second motor drives the cam to rotate. The cam periodically presses down the fixed pressure plate, and then, under the elastic force of the first spring, the fixed pressure plate moves upward again, making the fixed pressure plate move up and down periodically, pressing the mixture towards the crack, and thus quickly filling the crack with the mixture.

[0024] 3. A method for repairing cracks in an asphalt pavement. By setting a movable pressure plate, when the length of the crack is greater than that of the fixed pressure plate, only need to lay the movable pressure plate flat, and then screw the stud into the first ear block until the end of the stud inserts into the second ear block to fix the fixed pressure plate to the horizontal position. In this way, the crack can be covered jointly by the fixed pressure plate and the movable pressure plate. When the length of the crack is less than that of the fixed pressure plate, at this time, turn the movable pressure plate upward to lean on the sliding seat, and then pass the free end of the pull rope through the hanging ring and tie it tightly to fix the movable pressure plate.

[0025] 4. A method for repairing cracks in an asphalt pavement. By setting a driving and rotating component, when the cam rotates, the cam periodically pushes the inserting rod upward. The inserting rod synchronously drives the connecting rod to move upward, and the connecting rod synchronously drives the rack to move. The rack meshes with and drives the gear to rotate. The gear drives the lead screw to rotate through a one-way bearing. When the cam and the inserting rod are separated, the connecting rod moves downward under the action of the second spring. At this time, the one-way bearing is in a free state and the lead screw remains stationary, enabling the lead screw to rotate in a specific direction. The lead screw drives the push rod and the push plate to move forward, and the push plate can squeeze the mixture in the material box into the hose.

[0026] 5. A method for repairing cracks in an asphalt pavement. By setting an associated component, when the sliding seat moves left and right, it can synchronously drive the inserting rod to move. When the cam contacts the inserting rod, the inserting rod can move upward stably. Description of the Drawings

[0027] Figure 1 is a schematic flow chart of a method for repairing cracks in an asphalt pavement proposed by the present invention;

[0028] Figure 2 is a schematic structural diagram of the crack filling device from the first angle proposed by the present invention;

[0029] Figure 3Schematic diagram of the second angle structure of the caulking device proposed by the present invention;

[0030] Figure 4 Schematic diagram of the installation structure of the push rod motor of the caulking device proposed by the present invention;

[0031] Figure 5 Schematic diagram of the installation structure between the fixed pressure plate and the movable pressure plate of the caulking device proposed by the present invention;

[0032] Figure 6 Schematic diagram of the installation structure between the fixed pressure plate and the sliding seat of the caulking device proposed by the present invention;

[0033] Figure 7 For the present invention Figure 5 Schematic diagram of the enlarged structure at position A of the caulking device proposed;

[0034] Figure 8 Schematic diagram of the internal structure of the material box of the caulking device proposed by the present invention;

[0035] Figure 9 For the present invention Figure 3 Schematic diagram of the enlarged structure at position B of the caulking device proposed.

[0036] In the figure: 1, table board; 2, sliding frame; 3, sliding seat; 4, fixed pressure plate; 5, installation opening; 6, nozzle; 7, material box; 8, hose; 9, universal wheel; 10, handle; 11, screw; 12, first motor; 13, control panel; 14, push rod motor; 15, hanging plate; 16, second motor; 17, cam; 18, first spring; 19, insertion plate; 20, guide post; 21, movable pressure plate; 22, second ear block; 23, second ear block; 24, stud; 25, T-shaped column; 26, pull rope; 27, hanging ring; 28, push plate; 29, push rod; 30, fixed frame; 31, lead screw; 32, connecting rod; 33, second spring; 34, rack; 35, L-shaped plate; 36, insertion rod; 37, gear. Specific embodiments

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0038] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0039] Referring to Figures 1-9 , a method for repairing cracks in an asphalt pavement, comprising the following steps:

[0040] S1. Remove the dust and debris at the crack position;

[0041] S2. Pour a mixture of hot asphalt, warm mix agent and regenerant into the crack through a crack filling device;

[0042] S3. Microwave heat the asphalt at the crack position to soften the asphalt at the crack position;

[0043] S4. Uniformly lay clean gravel on the crack surface, with a laying thickness of 2 - 5 cm;

[0044] S5. Vibration roll the crack position to eliminate the crack;

[0045] S6. After the asphalt at the crack position cools, detect the crack repair situation through a radar monitoring device.

[0046] Further, the crack filling device includes a table board 1, a plurality of universal wheels 9 are installed at the bottom of the table board 1, a handle 10 is fixed on the top of the table board 1, a sliding frame 2 is arranged on the table board 1, a sliding seat 3 is slidably connected in the sliding frame 2, a fixed pressure plate 4 that can move up and down is arranged below the sliding seat 3, a spray head 6 is fixed in the mounting opening 5 on the fixed pressure plate 4, a material box 7 is fixed on the top of the table board 1, a hose 8 is connected between the discharge end of the material box 7 and the spray head 6, the sliding seat 3 reciprocates along the sliding frame 2 within a determined stroke range through a stroke control component, the device is moved to the crack position, and the spray head 6 is adjusted to align with the crack position, then the length of the crack is measured and this length is set through the stroke control component. During crack filling, the mixture in the material box 7 is pressed into the hose 8 and flows from the spray head 6 to the crack, and the stroke control component drives the sliding seat 3, the fixed pressure plate 4 and the spray head 6 to reciprocate along the length of the crack, so that the crack filling process is more precise, and the fixed pressure plate 4 will move up and down periodically to press the mixture towards the crack, so that the mixture quickly fills the crack.

[0047] Further, the stroke control component includes a screw rod 11, the screw rod 11 is rotatably connected to the sliding frame 2, the screw rod 11 is threadedly connected to the sliding seat 3, a first motor 12 is fixed at one end of the sliding frame 2, the output shaft of the first motor 12 is connected to the screw rod 11, the first motor 12 is directly controlled by a control panel 13, the length of the crack is input into the control panel 13, the control panel 13 controls the first motor 12 to start, the output shaft of the first motor 12 drives the screw rod 11 to rotate, and drives the sliding seat 3 to reciprocate within the length range of the crack.

[0048] Further, the stroke control component includes a push rod motor 14. The push rod motor 14 is fixedly arranged through one end of the carriage 2. The output shaft of the push rod motor 14 is connected to the sliding seat 3. The push rod motor 14 is directly controlled by the control panel 13. The length of the crack is input into the control panel 13. The control panel 13 controls the start of the push rod motor 14. The output shaft of the push rod motor 14 drives the sliding seat 3 to reciprocate within the length range of the crack.

[0049] Further, a hanging plate 15 is fixedly arranged on the side of the sliding seat 3. A second motor 16 is fixedly arranged on the hanging plate 15. The output shaft of the second motor 16 is connected to a cam 17. An insertion plate 19 is inserted at the bottom end of the sliding seat 3. The insertion plate 19 is fixedly connected to the fixed pressure plate 4. The hanging plate 15 and the fixed pressure plate 4 are connected by a first spring 18. A guide post 20 fixed to the fixed pressure plate 4 is arranged through the hanging plate 15. When filling the crack, the second motor 16 is started simultaneously. The output shaft of the second motor 16 drives the cam 17 to rotate. The cam 17 periodically presses down the fixed pressure plate 4. Then, under the elastic force of the first spring 18, the fixed pressure plate 4 moves upward again, so that the fixed pressure plate 4 moves up and down periodically.

[0050] Further, one end of the fixed pressure plate 4 is rotatably connected to a movable pressure plate 21. A first ear block 22 is fixedly arranged on the top of the fixed pressure plate 4. A second ear block 23 is fixedly arranged on the top of the movable pressure plate 21. A stud 24 whose end can be inserted into the second ear block 23 is threadedly connected to the first ear block 22. When the length of the crack is greater than that of the fixed pressure plate 4, only need to lay the movable pressure plate 21 flat, and then screw the stud 24 into the first ear block 22 until the end of the stud 24 is inserted into the second ear block 23 to fix the fixed pressure plate 4 to the horizontal position, so that the crack can be covered by the fixed pressure plate 4 and the movable pressure plate 21 together.

[0051] Further, a T-shaped column 25 is fixedly arranged on the top of the fixed pressure plate 4. A pull rope 26 is fixedly arranged on the T-shaped column 25. A hanging ring 27 is fixedly arranged on the top of the movable pressure plate 21. When the length of the crack is less than that of the fixed pressure plate 4, at this time, turn up the movable pressure plate 21 so that it leans against the sliding seat 3, and then pass the free end of the pull rope 26 through the hanging ring 27 and tie it tightly, then the movable pressure plate 21 can be fixed.

[0052] Further, a push plate 28 is arranged in the material box 7. A push rod 29 passing through the material box 7 is fixedly arranged at the rear end of the push plate 28. A fixed frame 30 is fixedly arranged at the rear end of the table board 1. A lead screw 31 is rotatably connected to the fixed frame 30. The lead screw 31 is threadedly connected to the push rod 29. The lead screw 31 is connected with a rotation driving component for driving the lead screw 31 to rotate in a specific direction. By driving the lead screw 31 to rotate in a specific direction through the rotation driving component, the lead screw 31 drives the push rod 29 and the push plate 28 to move forward, and the push plate 28 can squeeze the mixture in the material box 7 into the hose 8.

[0053] Further, a connecting rod 32 is inserted into the platen 1. The connecting rod 32 is elastically connected to the platen 1 through a plurality of second springs 33. A rack 34 is fixed to the top end of the connecting rod 32. The rear end of the lead screw 31 is connected to a gear 37 through a one-way bearing. The gear 37 is meshed and connected to the rack 34. An inserting rod 36 is arranged at the bottom end of the connecting rod 32. The inserting rod 36 is connected to the sliding seat 3 through an entrainment assembly. When the cam 17 rotates, the cam 17 periodically pushes the inserting rod 36 upward. The inserting rod 36 synchronously drives the connecting rod 32 to move upward. The connecting rod 32 synchronously drives the rack 34 to move. The rack 34 meshes and drives the gear 37 to rotate. The gear 37 drives the lead screw 31 to rotate through the one-way bearing. When the cam 17 and the inserting rod 36 are disengaged, the connecting rod 32 moves downward under the action of the second spring 33. At this time, the one-way bearing is in a free state, and the lead screw 31 remains stationary, so that the lead screw 31 can rotate in a specific direction.

[0054] Further, the entrainment assembly includes a pair of L-shaped plates 35. The L-shaped plates 35 are fixed to the sliding seat 3. The end of the inserting rod 36 is of a T-shaped structure. The end of the inserting rod 36 is inserted between the two L-shaped plates 35. The bottom end of the connecting rod 32 is sleeved on the inserting rod 36. In this way, when the sliding seat 3 moves left and right, the inserting rod 36 can be synchronously driven to move. When the cam 17 contacts the inserting rod 36, the inserting rod 36 can move upward stably.

[0055] Working principle: Move the device to the crack position and adjust the nozzle 6 to align with the crack position. Input the length of the crack into the control panel 13. During crack filling, the control panel 13 controls the first motor 12 to start. The output shaft of the first motor 12 drives the screw rod 11 to rotate, driving the sliding seat 3, the fixed pressing plate 4, and the nozzle 6 to reciprocate along the length of the crack. The output shaft of the second motor 16 drives the cam 17 to rotate. The cam 17 periodically presses down the fixed pressing plate 4. Then, under the elastic force of the first spring 18, the fixed pressing plate 4 moves upward again, so that the fixed pressing plate 4 moves up and down periodically, pressing the mixture towards the crack, enabling the mixture to quickly fill the crack. When the cam 17 rotates, the cam 17 periodically pushes the inserting rod 36 upward. The inserting rod 36 synchronously drives the connecting rod 32 to move upward. The connecting rod 32 synchronously drives the rack 34 to move. The rack 34 meshes and drives the gear 37 to rotate. The gear 37 drives the lead screw 31 to rotate through the one-way bearing. When the cam 17 and the inserting rod 36 are disengaged, the connecting rod 32 moves downward under the action of the second spring 33. At this time, the one-way bearing is in a free state, and the lead screw 31 remains stationary, so that the lead screw 31 can rotate in a specific direction. The lead screw 31 drives the push rod 29 and the push plate 28 to move forward. The push plate 28 can squeeze the mixture in the material box 7 into the hose 8 and flow from the nozzle 6 to the crack, thus completing the precise crack filling operation.

[0056] In addition, when the length of the crack is greater than the fixed pressure plate 4, just lay the movable pressure plate 21 flat, and then screw the stud 24 into the first ear block 22 until the end of the stud 24 is inserted into the second ear block 23 to fix the fixed pressure plate 4 to the horizontal position. In this way, the crack can be covered jointly by the fixed pressure plate 4 and the movable pressure plate 21. When the length of the crack is less than the fixed pressure plate 4, turn the movable pressure plate 21 upwards to make it lean against the sliding seat 3, and then pass the free end of the pull rope 26 through the hanging ring 27 and tie it tightly to fix the movable pressure plate 21.

[0057] As described above, it is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A method for repairing cracks in an asphalt pavement, characterized in that: The steps include: S1. Remove dust and debris from the cracks; S2. Pour a mixture of hot asphalt, warm mix agent and regeneration agent into the cracks through a caulking device; S3, heating the asphalt at the crack position with microwaves to soften the asphalt at the crack position; S4. Evenly lay clean gravel on the crack surface with a thickness of 2-5cm; S5. Perform vibration rolling on the crack position to eliminate the crack; S6. After the asphalt at the crack location cools down, the crack repair status is detected by a radar monitoring device.

2. The caulking device according to claim 1, characterized in that: The grouting device comprises a table (1), a plurality of universal wheels (9) are installed at the bottom of the table (1), a handle (10) is fixed at the top of the table (1), a slide (2) is provided on the table (1), a slide seat (3) is slidably connected in the slide (2), a fixed pressure plate (4) movable up and down is provided below the slide seat (3), a nozzle (6) is fixed in the mounting opening (5) on the fixed pressure plate (4), a material box (7) is fixed on the top of the table (1), a material discharge end of the material box (7) is connected to the nozzle (6) via a hose (8), and the slide seat (3) reciprocates along the slide (2) within a determined stroke range via a stroke control component.

3. The caulking device according to claim 2, characterized in that: The stroke control assembly comprises a screw rod (11), the screw rod (11) is rotatably connected to the slide (2), the screw rod (11) is threadedly connected to the slide seat (3), a first motor (12) is fixed to one end of the slide (2), an output shaft of the first motor (12) is connected to the screw rod (11), and the first motor (12) is directly controlled by a control panel (13).

4. The caulking device according to claim 2, characterized in that: The stroke control assembly comprises a push rod motor (14), the push rod motor (14) is fixed through one end of the slide (2), the output shaft of the push rod motor (14) is connected to the slide seat (3), and the push rod motor (14) is directly controlled by the control panel (13).

5. The caulking device according to claim 2, characterized in that: A hanging plate (15) is fixed on the side of the slide seat (3), a second motor (16) is fixed on the hanging plate (15), an output shaft of the second motor (16) is connected to a cam (17), a plug plate (19) is inserted at the bottom end of the slide seat (3), the plug plate (19) is fixedly connected to the fixed pressure plate (4), the hanging plate (15) and the fixed pressure plate (4) are connected via a first spring (18), and a guide column (20) fixed on the fixed pressure plate (4) is provided through the hanging plate (15).

6. The caulking device according to claim 5, characterized in that: One end of the fixed pressure plate (4) is rotatably connected to a movable pressure plate (21), a first ear block (22) is fixed on the top of the fixed pressure plate (4), a second ear block (23) is fixed on the top of the movable pressure plate (21), and a stud (24) is threadedly connected to the first ear block (22), the end of which can be inserted into the second ear block (23).

7. The caulking device according to claim 6, characterized in that: A T-shaped column (25) is fixed on the top of the fixed pressure plate (4), a pull rope (26) is fixed on the T-shaped column (25), and a hanging ring (27) is fixed on the top of the movable pressure plate (21).

8. The caulking device according to claim 2, characterized in that: A push plate (28) is arranged in the material box (7), a push rod (29) passing through the material box (7) is fixed at the rear end of the push plate (28), a fixing frame (30) is fixed at the rear end of the table (1), a screw rod (31) is rotatably connected to the fixing frame (30), the screw rod (31) is threadedly connected to the push rod (29), and the screw rod (31) is connected to a driving assembly for driving the screw rod (31) to rotate in a directional manner.

9. The crack filling device according to claim 8, characterized in that: A connecting rod (32) is inserted on the table (1), and the connecting rod (32) is elastically connected to the table (1) through a plurality of second springs (33). A rack (34) is fixed to the top of the connecting rod (32), and a gear (37) is connected to the rear end of the screw rod (31) through a one-way bearing. The gear (37) is meshingly connected to the rack (34). A plunger (36) is provided at the bottom end of the connecting rod (32), and the plunger (36) is connected to the slide seat (3) through a linkage assembly. When the cam (17) rotates, the cam (17) periodically pushes the plunger (36) upward.

10. The caulking device according to claim 9, characterized in that: The linkage assembly comprises a pair of L-plates (35), the L-plates (35) are fixed on the slide seat (3), the end of the plunger (36) is a T-shaped structure, the end of the plunger (36) is inserted between the two L-plates (35), and the bottom end of the connecting rod (32) is sleeved on the plunger (36).

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