Road crack repairing device

Abstract

The utility model belongs to the technical field of road repairing, and discloses a road crack repairing device which comprises a sweeping board, rolling wheels are arranged at the four corners of the bottom of the sweeping board, a notch is formed in the rear side of the sweeping board, supporting columns are arranged on the sweeping board and located on the two sides of the notch, a sliding frame is vertically and slidably arranged between the two supporting columns, and a top plate is jointly arranged at the tops of the two supporting columns. A lifting mechanism is arranged on the top plate, a fixed seat is arranged in the sliding frame, a rotating shaft is rotationally arranged in the fixed seat, an up-down swing assembly is arranged on the rotating shaft, an output pipe is arranged on the up-down swing assembly, a nozzle is arranged at a pipe opening in the outer end of the output pipe, a guide column is arranged on the lower side of the nozzle, and an extrusion mechanism is arranged beside the notch and comprises a conveying pipe. The conveying pipe is connected with the output pipe. The guide column is placed in the crack, the sweeping board is pushed to move along the crack, and the guide column is always in the zigzag crack, so that the output pipe rotates, the position of the spray head is changed along with the crack, and the sealant sprayed by the spray head is ensured to fall into the pavement crack.

Description

Technical Field

[0001] The utility model relates to the technical field of highway repair, and particularly relates to a highway crack repair device. Background Art

[0002] With the rapid development of urbanization and the continuous expansion of the transportation network, concrete pavements have become an important part of modern transportation infrastructure. However, over time, concrete pavements will inevitably be affected by various factors, and one of the most prominent problems is the occurrence of cracks. The appearance of cracks in concrete pavements not only affects the beauty and flatness of the road, but also poses a threat to the structural stability and service life of the road surface. The formation of cracks is caused by various factors, including temperature changes, foundation settlement, traffic load, etc. In order to ensure the reliability and service life of the road, timely and effective repair of concrete pavement cracks has become crucial.

[0003] A highway crack repair device is disclosed in the Chinese utility model patent with the publication number CN218521582U, which includes a vehicle plate, a storage box, and a repair gun head. A lifting box is fixedly connected to the top of the vehicle plate. A lifting screw rod is rotatably connected between the upper inner wall of the lifting box and the top of the vehicle plate. A lifting block is threadedly connected to the lifting screw rod. A translation box is fixedly connected to the outer surface of one side of the lifting block. A translation screw rod is rotatably connected between the inner walls on both sides of the translation box. A connecting block is threadedly connected to the translation screw rod. A fixing block is fixedly connected to the outer surface of one side of the connecting block. The storage box is fixedly installed on the top of the vehicle plate. The repair gun head is connected to the storage box through a transmission pipe. The fixing block is fixedly sleeved on the repair gun head. Rotating the lifting screw rod can drive the lifting block to move up and down, so as to adjust the vertical height position of the repair gun head through the translation box. At the same time, by controlling the rotation of the translation screw rod, the connecting block can drive the repair gun head to move left and right through the fixing block, so that the repair gun head can be adjusted left and right and up and down at the same time, so that the repair gun head can adapt to the highway crack repair work in most cases.

[0004] Regarding the above related technologies, the inventor believes that there are the following defects: When using the above device, if it encounters a relatively tortuous crack, the position of the repair gun head can be always located above the road surface crack by controlling the pushing direction of the vehicle plate or by controlling the rotation of the translation screw rod. However, controlling the pushing direction of the vehicle plate to control the position of the repair gun head is laborious and inaccurate, and it cannot ensure that the sealing glue sprayed by the repair gun head falls into the road surface crack. By controlling the rotation of the translation screw rod to control the position of the repair gun head, when the staff pushes the vehicle plate, they need to stare at the ground crack and the position of the repair gun head. It is difficult and cannot observe the front environment, which has potential safety hazards. Summary of the Utility Model

[0005] To solve the above problems, the present utility model provides a highway crack repair device.

[0006] The above technical object of the present utility model is achieved by the following technical solutions: A highway crack repair device includes a vehicle plate. At each of the four corners at the bottom of the vehicle plate, rollers are provided. A notch is formed at the rear side of the vehicle plate. On the vehicle plate, vertical support columns are provided on both sides of the notch. A sliding frame is vertically slidably arranged between the two support columns. A top plate is jointly provided at the tops of the two support columns. An elevating mechanism for driving the sliding frame to lift is provided on the top plate. A fixed seat is arranged inside the sliding frame. A vertically arranged rotating shaft is rotatably arranged inside the fixed seat. An up-and-down swing assembly is arranged on the rotating shaft. An output pipe is arranged on the up-and-down swing assembly. The output pipe is in a downwardly inclined state from the up-and-down swing assembly towards the rear side of the vehicle plate. A nozzle is arranged at the outer end of the output pipe. A guiding column is arranged below the nozzle. A caulking mechanism for accommodating and discharging sealant is arranged beside the notch. The caulking mechanism includes a delivery pipe for discharging materials, and the delivery pipe is connected to the output pipe.

[0007] By adopting the above technical solutions, with the vehicle plate, caulking mechanism, sliding frame, elevating mechanism, up-and-down swing assembly, output pipe, and guiding column provided, when repairing a road crack, first place the guiding column into the crack. The sealant is sent into the output pipe through the caulking mechanism. The sealant in the output pipe flows into the crack from the nozzle. Push the vehicle plate to move along the crack. The guiding column is always inside the tortuous crack, so that the output pipe rotates in the circumferential direction of the rotating shaft, making the position of the nozzle change with the crack, ensuring that the sealant sprayed by the nozzle falls into the road crack. There is no need for manual control of the nozzle position, which is simple and convenient. During the operation process, the staff does not need to always keep an eye on the nozzle position and can observe the surrounding environment to ensure the safety of the operation and avoid potential safety hazards. The elevating mechanism is used to drive the sliding frame to rise, thereby controlling the rise of the output pipe, nozzle, and guiding column, avoiding the rapid wear of the guiding column caused by continuous friction between the guiding column and the ground when moving the vehicle plate in a non-working state.

[0008] Further, the up-and-down swing assembly includes a connecting seat connected to the rotating shaft. A horizontally arranged rotating shaft is rotatably arranged inside the connecting seat. A connecting square pipe with a length direction perpendicular to the length direction of the rotating shaft is arranged on the rotating shaft. The output pipe is arranged inside the connecting square pipe.

[0009] By adopting the above technical solutions, with the connecting seat, rotating shaft, and connecting square pipe provided, through the connection between the output pipe and the connecting square pipe, when the guiding column encounters a stone block, the output pipe rotates upward, enabling the guiding column to avoid the stone block.

[0010] Furthermore, a fixing plate is provided on the connecting seat and extends rearwardly overhangingly towards the vehicle board. A first arc-shaped guiding rod is provided on the upper side of the connecting square tube with the rotation axis as the center. A guiding hole which is slidably engaged with the first arc-shaped guiding rod is provided on the fixing plate. The end of the first arc-shaped guiding rod passes through the guiding hole and is provided with a retaining piece. A first arc-shaped spring is sleeved on the rod body of the first arc-shaped guiding rod between the output pipe and the fixing plate. One end of the first arc-shaped spring abuts against the output pipe and the other end abuts against the fixing plate.

[0011] By adopting the above technical solution, the fixing plate, the first arc-shaped guiding rod, the guiding hole, the retaining piece and the first arc-shaped spring are provided. When the output pipe rotates upward, the first arc-shaped spring is compressed. When the guiding column avoids the stone, the first arc-shaped spring releases the elastic force, so that the output pipe and the guiding column are reset, and the retaining piece is used to prevent the first arc-shaped guiding rod from sliding out of the guiding hole.

[0012] Furthermore, a connecting plate is vertically provided on the fixing plate. An installation frame is provided on the sliding frame adjacent to the fixed seat. A second arc-shaped guiding rod is provided on the installation frame with the rotation axis as the center. The connecting plate is slidably arranged on the second arc-shaped guiding rod through a sliding hole. Second arc-shaped springs are provided on the rod bodies of the second arc-shaped guiding rod on both sides of the connecting plate. One end of each second arc-shaped spring abuts against the installation frame and the other end abuts against the connecting plate.

[0013] By adopting the above technical solution, the connecting plate, the installation frame, the second arc-shaped guiding rod and the second arc-shaped spring are provided. When the output pipe rotates left and right in the circumferential direction of the rotation axis, the second arc-shaped springs on the left and right sides of the connecting plate will be compressed respectively. When the work is completed and the sliding frame rises, the guiding column rises from the gap, and the second arc-shaped spring loses the restraint and pushes the output pipe to reset, facilitating the next operation.

[0014] Furthermore, a slide rail is vertically provided inside the support column. Both sides of the sliding frame are slidably arranged on the corresponding slide rails through sliders.

[0015] By adopting the above technical solution, a slide rail is vertically provided inside the support column, and both sides of the sliding frame are slidably arranged on the corresponding slide rails through sliders, ensuring the stability of the up-and-down sliding of the sliding frame.

[0016] Furthermore, the lifting mechanism includes a threaded rod vertically rotatably provided on the top plate. The top of the sliding frame is helically engaged with the threaded rod through a threaded hole. A crank is provided at the top of the threaded rod.

[0017] By adopting the above technical solution, the threaded rod and the crank are provided. Turning the crank drives the threaded rod to rotate. Since the top of the sliding frame is helically engaged with the threaded rod through a threaded hole, the sliding frame slides up and down, driving the output pipe, the nozzle and the guiding column to lift.

[0018] Further, a fixing block is vertically arranged at the bottom of one side of the top plate. Two fixing holes are vertically spaced on the fixing block. A screw hole is formed on the sliding frame. A bolt passes through the fixing hole and is screwed into the screw hole to fix the position of the sliding frame.

[0019] By adopting the above technical solution, the fixing block, the fixing holes and the screw hole are provided. By passing the bolt through different fixing holes and screwing it into the screw hole, different height positions of the sliding frame are fixed.

[0020] Further, the material extrusion mechanism includes a receiving barrel arranged on the vehicle plate. A feed inlet is arranged at the top of the receiving barrel, and a discharge pipe is arranged at the bottom. An asphalt pump is arranged on the vehicle plate. The feed inlet of the asphalt pump is connected to the discharge pipe, and the discharge outlet is connected to the delivery pipe.

[0021] By adopting the above technical solution, the receiving barrel, the feed inlet and the asphalt pump are provided. The heated sealant is received by the receiving barrel, and the asphalt pump is used to pump the sealant into the output pipe. Then the sealant flows into the crack from the nozzle.

[0022] In summary, the present utility model has the following beneficial effects: In this application, the vehicle plate, the material extrusion mechanism, the sliding frame, the lifting mechanism, the up-and-down swing assembly, the output pipe and the guiding column are provided. When repairing a road crack, first place the guiding column into the crack. The sealant is sent into the output pipe through the material extrusion mechanism. The sealant in the output pipe flows into the crack from the nozzle, and the vehicle plate is pushed to move along the crack. The guiding column is always in the zigzag crack, so that the output pipe rotates in the circumferential direction of the rotating shaft, and the position of the nozzle changes with the crack, ensuring that the sealant sprayed by the nozzle falls into the road crack. There is no need for manual control of the nozzle position, which is simple and convenient. During the operation process, the staff does not need to always keep an eye on the nozzle position and can observe the surrounding environment to ensure the safety of the operation and avoid potential safety hazards. The lifting mechanism is used to drive the sliding frame to rise, thereby controlling the rise of the output pipe, the nozzle and the guiding column, avoiding the rapid wear of the guiding column caused by the continuous friction between the guiding column and the ground when moving the vehicle plate in the non-working state. Description of the Drawings

[0023] Figure 1 is the overall structural schematic diagram of the embodiment of the present utility model;

[0024] Figure 2 is the structural schematic diagram of the support column, the lifting mechanism and the sliding frame part of the embodiment of the present utility model;

[0025] Figure 3 is the structural schematic diagram of the fixed seat, the up-and-down swing assembly and the output pipe part of the embodiment of the present utility model.

[0026] In the figure: 10, vehicle board; 11, roller; 12, notch; 13, support column; 14, top board; 15, slide rail; 16, fixing block; 17, fixing hole; 20, sliding frame; 21, fixing seat; 22, rotating shaft; 23, mounting frame; 24, second arc-shaped guide rod; 25, second arc-shaped spring; 30, lifting mechanism; 31, threaded rod; 32, crank; 40, up-and-down swing assembly; 41, connecting seat; 42, rotating shaft; 43, fixing plate; 44, connecting plate; 45, connecting square pipe; 50, output pipe; 51, nozzle; 52, guiding column; 53, first arc-shaped guide rod; 54, retaining plate; 55, first arc-shaped spring; 60, material extrusion mechanism; 61, conveying pipe; 62, receiving barrel; 63, feed inlet; 64, asphalt pump. Detailed implementation mode

[0027] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application; obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0028] As Figures 1 - 3 shown, the embodiment of the present application discloses a highway crack repair device, including a vehicle board 10, a sliding frame 20, a lifting mechanism 30, an up-and-down swing assembly 40, an output pipe 50, and a material extrusion mechanism 60. A notch 12 is provided at the rear side of the vehicle board 10, and support columns 13 are vertically arranged on both sides of the notch 12 on the vehicle board 10. The sliding frame 20 is slidably arranged between the support columns 13, so that the sliding frame 20 can be lifted. A top board 14 is commonly provided at the tops of the two support columns 13, and the lifting mechanism 30 is arranged on the top board 14 for driving the sliding frame 20 to lift. A fixing seat 21 is arranged inside the sliding frame 20, and a vertically arranged rotating shaft 22 is rotatably arranged inside the fixing seat 21. The up-and-down swing assembly 40 is arranged on the rotating shaft 22, and the output pipe 50 is arranged on the up-and-down swing assembly 40. The output pipe 50 is in a downward inclined state from the up-and-down swing assembly 40 to the rear side of the vehicle board 10. A nozzle 51 is arranged at the outer end of the output pipe 50, and a guiding column 52 is arranged below the nozzle 51. The vehicle board 10 is pushed to move along the crack, and the guiding column 52 is always in the zigzag crack, so that the output pipe 50 rotates in the circumferential direction of the rotating shaft 22, and the position of the nozzle 51 changes with the crack. The material extrusion mechanism 60 is arranged beside the notch 12 for accommodating sealant and feeding the sealant into the output pipe 50. The sealant in the output pipe 50 flows out through the nozzle 51 into the crack to repair the road crack.

[0029] Specifically, the up-and-down swing assembly 40 includes a connecting seat 41 connected to the rotating shaft 22. A horizontally arranged rotating shaft 42 is rotatably provided in the connecting seat 41. A connecting square pipe 45 with a length direction perpendicular to the length direction of the rotating shaft is provided on the rotating shaft 42. The output pipe 50 is arranged in the connecting square pipe 45, so that when the guiding column 52 encounters a stone blockage, the output pipe 50 rotates upward, enabling the guiding column 52 to avoid the stone. A fixing plate 43 is provided on the connecting seat 41 and extends rearwardly overhanging the vehicle floor 10. A first arc-shaped guiding rod 53 is provided on the upper side of the connecting square pipe 45 with the rotating shaft 42 as the center. A guiding hole slidably engaged with the first arc-shaped guiding rod 53 is provided on the fixing plate 43, further ensuring the stability of the rotation of the output pipe 50. A first arc-shaped spring 55 is sleeved on the rod body of the first arc-shaped guiding rod 53 between the output pipe 50 and the fixing plate 43. One end of the first arc-shaped spring 55 abuts against the output pipe 50 and the other end abuts against the fixing plate 43. When the output pipe 50 rotates upward, the first arc-shaped spring 55 is compressed. When the guiding column 52 avoids the stone, the first arc-shaped spring 55 releases its elastic force, causing the output pipe 50 and the guiding column 52 to reset. A retaining piece 54 is provided at the end of the first arc-shaped guiding rod 53 passing through the guiding hole, using the retaining piece 54 to prevent the first arc-shaped guiding rod 53 from slipping out of the guiding hole.

[0030] During installation, a connecting plate 44 is vertically provided on the fixing plate 43. An installation frame 23 is provided on the sliding frame 20 adjacent to the fixed seat 21. A second arc-shaped guiding rod 24 is provided on the installation frame 23 with the rotating shaft 22 as the center. The connecting plate 44 is slidably arranged on the second arc-shaped guiding rod 24 through a sliding hole, so that when the output pipe 50 rotates left and right, it drives the connecting plate 44 to slide on the second arc-shaped guiding rod 24. Second arc-shaped springs 25 are provided on the rod bodies of the second arc-shaped guiding rod 24 on both sides of the connecting plate 44. One end of each second arc-shaped spring 25 abuts against the installation frame 23 and the other end abuts against the connecting plate 44. When the output pipe 50 rotates left and right in the circumferential direction of the rotating shaft 22, the second arc-shaped springs 25 on both the left and right sides of the connecting plate 44 will be compressed respectively. When the work is completed and the sliding frame 20 rises, the guiding column 52 rises from the gap, and the second arc-shaped springs 25 lose their restraint and push the output pipe 50 to reset, facilitating the next operation.

[0031] During specific settings, four support columns 13 can be provided to further ensure the stability of the sliding of the sliding frame 20. Vertical slide rails 15 are provided inside the support columns 13. The two sides of the sliding frame 20 are respectively slidably arranged on the corresponding slide rails 15 through sliders, ensuring the stability of the up-and-down sliding of the sliding frame 20. Rollers 11 are provided at the four corners of the bottom of the vehicle board 10, and a push handle is provided on the top board 14 to facilitate the movement of the vehicle board 10. The lifting mechanism 30 includes a threaded rod 31 vertically rotatably arranged on the top board 14. The top of the sliding frame 20 is in screw fit with the threaded rod 31 through a threaded hole. A crank 32 is provided at the top of the threaded rod 31. Rotating the crank 32 drives the threaded rod 31 to rotate, causing the sliding frame 20 to slide up and down, driving the output pipe 50, the nozzle 51, and the guiding column 52 to lift and lower, avoiding the guiding column 52 always rubbing against the ground when moving the vehicle board 10 in a non-working state, resulting in rapid wear of the guiding column 52.

[0032] A fixing block 16 is vertically provided at the bottom of one side of the top board 14. Two fixing holes 17 are vertically spaced apart on the fixing block 16. A screw hole is provided on the sliding frame 20. By passing bolts through different fixing holes 17 and screwing them into the screw hole, different height positions of the sliding frame 20 are fixed.

[0033] The material extrusion mechanism 60 includes a delivery pipe 61 for discharging materials. The delivery pipe 61 is connected to the output pipe 50. The material extrusion mechanism 60 includes a receiving barrel 62 provided on the vehicle board 10. A feed inlet 63 is provided at the top of the receiving barrel 62. The heated sealant is poured into the receiving barrel 62 from the feed inlet 63. The sealant is a special sealant for roads, also known as road crack sealant, which is a kind of crack filling material specifically used for repairing cracks in road surfaces. The main components are a composite material of modified asphalt and thermoplastic rubber. A heating mechanism can also be provided in the receiving barrel 62 to maintain the temperature of the sealant. A discharge pipe is provided at the bottom of the receiving barrel 62. An asphalt pump 64 is provided on the vehicle board 10. The feed inlet of the asphalt pump 64 is connected to the discharge pipe, and the discharge outlet is connected to the delivery pipe 61. The asphalt pump 64 is used to pump the sealant into the delivery pipe 61 and the output pipe 50, and then the sealant flows into the crack from the nozzle 51. Square holes are provided on the connecting square pipe 45 and the fixing plate 43 for the delivery pipe 61 to pass through and be connected to the output pipe 50.

[0034] In this embodiment, the working principle of a highway crack repair device is as follows: when repairing the cracks on the road surface, first place the guiding column 52 into the crack, and then start the asphalt pump 64. The asphalt pump 64 pumps the sealant in the storage barrel 62 into the output pipe 50. Subsequently, the sealant flows from the nozzle 51 into the crack. Push the vehicle plate 10 to move along the crack. The guiding column 52 is always within the tortuous crack, so that the output pipe 50 rotates in the circumferential direction of the rotating shaft 22, making the position of the nozzle 51 change with the crack, ensuring that the sealant sprayed by the nozzle 51 falls into the road surface crack. There is no need for manual control of the position of the nozzle 51, which is simple and convenient. During the operation process, the staff does not need to always keep an eye on the position of the nozzle 51, and can observe the surrounding environment to ensure the safety of the operation and avoid potential safety hazards. When the guiding column 52 encounters a stone block during the movement of the vehicle plate 10, the output pipe 50 rotates upward, enabling the guiding column 52 to avoid the stone block. At the same time, the first arc-shaped spring 55 is compressed. When the guiding column 52 avoids the stone block, the first arc-shaped spring 55 releases its elastic force, causing the output pipe 50 and the guiding column 52 to reset back into the crack and continue the road surface repair operation.

[0035] The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the concept of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. A road crack repair device, characterized by: The invention comprises a vehicle plate (10), wherein rollers (11) are arranged at four corners of the bottom of the vehicle plate (10), a notch (12) is opened at the rear side of the vehicle plate (10), support columns (13) are arranged vertically on both sides of the notch (12) on the vehicle plate (10), a sliding frame (20) is arranged vertically between two of the support columns (13), a top plate (14) is arranged on the top of the two support columns (13), a lifting mechanism (30) for driving the sliding frame (20) to rise and fall is arranged on the top plate (14), a fixing seat (21) is arranged inside the sliding frame (20), and a vertically arranged rotating mechanism (30) is arranged inside the fixing seat (21) A rotating shaft (22) is provided on the rotating shaft (22), an up-and-down swinging assembly (40) is provided on the up-and-down swinging assembly (40), an output pipe (50) is provided on the up-and-down swinging assembly (40), the output pipe (50) is in a downwardly inclined state from the up-and-down swinging assembly (40) to the rear side of the vehicle plate (10), a nozzle (51) is provided at the outer end of the output pipe (50), a guide column (52) is provided at the lower side of the nozzle (51), an extrusion mechanism (60) for accommodating and outputting the sealant is provided beside the notch (12), the extrusion mechanism (60) includes a delivery pipe (61) for discharging the material, and the delivery pipe (61) is connected to the output pipe (50).

2. A road crack repair device according to claim 1, characterized in that: The up-and-down swing assembly (40) comprises a connection seat (41) connected to the rotating shaft (22); a horizontally arranged rotating shaft (42) is rotatably arranged in the connection seat (41); a connection square tube (45) whose length direction is perpendicular to the length direction of the rotating shaft is arranged on the rotating shaft (42); and the output tube (50) is arranged in the connection square tube (45).

3. A road crack repairing device according to claim 2, characterized in that: A fixing plate (43) is cantilevered on the connecting seat (41) toward the rear side of the vehicle plate (10); a first arc-shaped guide rod (53) is arranged on the upper side of the connecting square tube (45) with the rotating shaft (42) as the center; a guide hole is arranged on the fixing plate (43) for slidingly cooperating with the first arc-shaped guide rod (53); an end of the first arc-shaped guide rod (53) passes through the guide hole and is provided with a blocking sheet (54); a first arc-shaped spring (55) is sleeved on the rod body of the first arc-shaped guide rod (53) located between the output tube (50) and the fixing plate (43); one end of the first arc-shaped spring (55) is in contact with the output tube (50) and the other end is in contact with the fixing plate (43).

4. A road crack repairing device according to claim 3, characterized in that: A connecting plate (44) is vertically arranged on the fixing plate (43); a mounting frame (23) is arranged on the sliding frame (20) adjacent to the fixing seat (21); a second arc-shaped guide rod (24) is arranged on the mounting frame (23) with the rotating shaft (22) as the center; the connecting plate (44) is slidably arranged on the second arc-shaped guide rod (24) through a sliding hole; second arc-shaped springs (25) are arranged on the rod bodies of the second arc-shaped guide rods (24) located on both sides of the connecting plate (44); one end of the second arc-shaped spring (25) is in contact with the mounting frame (23) and the other end is in contact with the connecting plate (44).

5. A road crack repairing device according to claim 1, characterized in that: A slide rail (15) is vertically arranged inside the support column (13), and two sides of the slide frame (20) are slidably arranged on the corresponding slide rail (15) through sliders.

6. A road crack repairing device according to claim 1, characterized in that: The lifting mechanism (30) comprises a threaded rod (31) which is vertically rotatably arranged on the top plate (14); the top of the sliding frame (20) is screw-matched with the threaded rod (31) through a threaded hole; and a crank (32) is arranged on the top of the threaded rod (31).

7. A road crack repairing device according to claim 1, characterized in that: A fixing block (16) is vertically arranged at the bottom of one side of the top plate (14), and two fixing holes (17) are vertically spaced apart on the fixing block (16). A screw hole is provided on the sliding frame (20), and a bolt passes through the fixing hole (17) and is screwed into the screw hole to fix the position of the sliding frame (20).

8. A road crack repairing device according to claim 1, characterized in that: The extrusion mechanism (60) comprises a accommodating barrel (62) arranged on a vehicle plate (10), the accommodating barrel (62) having a feed port (63) at the top and a discharge pipe at the bottom, an asphalt pump (64) being arranged on the vehicle plate (10), the feed port (63) of the asphalt pump (64) being connected to the discharge pipe, and the discharge port being connected to the conveying pipe (61).

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