Crack repairing equipment for highway construction

Abstract

The invention discloses crack repairing equipment for highway construction, and relates to the field of highway construction.The crack repairing equipment comprises a movable bottom plate and a movable box fixedly connected to the movable bottom plate, a mounting support is fixedly connected to the side face of the movable bottom plate, a motor is fixedly connected to the movable bottom plate, and a cleaning cover is fixedly connected to the mounting support; a cleaning wheel is rotationally connected into the cleaning cover, a cleaning wheel shaft is in transmission connection with a motor rotor, and a dust collection cover moving in a reciprocating mode is arranged on the side face of the cleaning cover and driven by a motor. Dust in cracks can be removed in the construction process, particularly, the dust collection effect can be improved by lowering the dust collection cover at the positions, where sand and dust are prone to being accumulated, of the ends of the cracks, intermittent discharging can be achieved when asphalt or concrete is discharged to the positions of the cracks, and therefore the discharging position and the discharging amount can be manually controlled; and in addition, the materials can be dispersed through the rotating scraping plate, so that convenience is provided for later tamping.

Description

Technical Field

[0001] The present invention relates to the field of highway construction, and specifically to a crack repair device for highway construction. Background Art

[0002] In the field of highway construction, crack repair is an extremely important and frequent task. With the continuous growth of traffic flow and the influence of natural environmental factors, various cracks will inevitably appear on the highway pavement. These cracks not only affect the aesthetics of the road, but also seriously threaten the structural integrity and driving safety of the road. At present, many problems have emerged in the practical application of traditional highway crack repair technologies. In terms of the crack cleaning process, existing methods often fail to completely remove the dust in the cracks, especially at the critical end part of the cracks where dust is extremely likely to accumulate. Common cleaning equipment and processes cannot accurately target this area for efficient cleaning, resulting in dust residue, which greatly affects the bonding effect between the subsequent repair materials and the crack matrix, making the repaired cracks prone to cracking again. In terms of the filling of repair materials, existing technologies mostly adopt a continuous feeding method, which makes it difficult for construction workers to accurately control the feeding position and feeding amount. On the one hand, in some fine cracks that require a small amount of repair materials, material waste is likely to occur; on the other hand, for long cracks or complex cracks, it is difficult to accurately distribute materials at different positions according to actual needs, affecting the repair quality. Moreover, after the material is filled by traditional processes, there is a lack of effective means for material dispersion. Usually, it relies on manual simple leveling, which not only has low efficiency, but also is difficult to ensure uniform material distribution, bringing great inconvenience to the subsequent ramming work, and thus affecting the compaction degree and flatness of the entire repair project. In summary, it is extremely urgent to develop a highway crack repair technology with a simple structure, convenient use, which can effectively solve the crack cleaning problem, accurately control the feeding, and efficiently disperse the materials. For this reason, technical personnel in this field have proposed a crack repair device for highway construction to solve the problems raised in the above background. Summary of the Invention

[0003] The purpose of the present invention is to provide a crack repair device for highway construction to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions: A crack repair device for highway construction, comprising a moving bottom plate and a moving box body fixedly connected to the moving bottom plate. An installation bracket is fixedly connected to the side of the moving bottom plate, and a motor is fixedly connected to the moving bottom plate. A cleaning cover is fixedly connected to the installation bracket. A cleaning wheel is rotatably connected inside the cleaning cover, and a transmission connection is provided between the cleaning wheel shaft and the motor rotor. A reciprocating dust collection cover is arranged on the side of the cleaning cover, and the dust collection cover is driven by a motor. The dust collection cover moves along a guide plate fixedly arranged on the side of the cleaning cover. The heights of both ends of the guide plate are lower than the middle part, and when the dust collection cover moves to both ends, it moves downward closer to the road surface.

[0005] As a further solution of the present invention: a driven belt pulley is fixedly connected to the cleaning wheel shaft, a driving belt pulley is fixedly connected to the motor rotor, and a transmission belt is sleeved between the driving belt pulley and the driven belt pulley.

[0006] As a further solution of the present invention: a ring-shaped member is slidably connected to the moving bottom plate. Transmission teeth are evenly distributed above and below the inner side of the ring-shaped member. An incomplete gear is fixedly connected to the outside of the motor rotor, and the incomplete gear alternately meshes with the transmission teeth above and below. A driving rack is fixedly connected to the side of the ring-shaped member. A guide beam is fixedly connected to the installation bracket. Two sliders are slidably connected below the guide beam, and the sliders are both threadedly connected to a driving threaded shaft. The threads on the outside of the driving threaded shaft are symmetrically arranged. A driven gear is fixedly connected to the end of the driving threaded shaft, and the driven gear meshes with the driving rack. A transmission rod is rotatably connected below the slider, and the bottom of the transmission rod is rotatably connected to a driving block. The dust collection cover is fixedly connected to the driving block, and the bottom of the driving block abuts against the guide plate. When the driving block cooperates with both ends of the guide plate, the transmission rod is in a vertical state under the action of a torsion spring. When the slider slides inward to the position where the driving block cooperates with the middle part of the guide plate, the transmission rod is in an inclined state.

[0007] As a further solution of the present invention: a discharge pipe is fixedly connected to the side of the moving box body. A discharge shaft is rotatably connected inside the discharge pipe. A spiral auger is fixedly connected to the outside of the discharge shaft. An end cover is slidably connected to the outside of the discharge shaft, and the end cover cooperates with the end of the discharge pipe to control the discharge. A driven bevel gear is fixedly connected to the end of the discharge shaft. Two driving bevel gears are symmetrically and fixedly connected to the outside of the driving threaded shaft, and the driving bevel gears alternately mesh with the driven bevel gear.

[0008] As a further solution of the present invention: the end cover is in snap-fit or threaded fit with the end of the discharge pipe.

[0009] As a further solution of the present invention: an installation sleeve is fixedly connected to the outside of the discharge shaft, and a plurality of scraping plates are connected to the installation sleeve. The material discharged from the discharge pipe is dispersed under the action of the scraping plates.

[0010] As a further solution of the present invention: an inclined guide plate is fixedly connected to the lower part of the inner wall of the moving box body, and the bottom of the inclined guide plate faces the spiral auger.

[0011] As a further solution of the present invention: a push handle is fixedly connected to the side of the moving box body, moving wheels are evenly distributed and connected to the bottom of the moving bottom plate, a storage battery for driving the motor is also fixedly connected to the moving bottom plate, and a control panel is fixedly connected to the side of the moving box body.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention has a simple structure and is easy to use. It is used for crack repair in road construction. During the construction process, it can remove the dust in the cracks. Especially in the parts where dust is likely to accumulate at the ends of the cracks, the dust collection effect can be improved by lowering the dust collection cover. When discharging asphalt or concrete to the crack position, it can discharge materials intermittently, so that the discharging position and the discharging amount can be manually controlled. And the scattered materials can be scraped by the rotating scraper, which provides convenience for later compaction. The use experience is good and it is worthy of promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of a crack repair device for road construction; Figure 2 is a partial structural schematic diagram of another perspective of a crack repair device for road construction; Figure 3 is a schematic diagram of a scraper and its partial connection structure in a crack repair device for road construction; Figure 4 is Figure 1 a partial enlarged view of part A in Figure 5 is Figure 2 a partial enlarged view of part B in

[0014] In the figure: 1, moving bottom plate; 2, moving box body; 3, mounting bracket; 4, motor; 5, cleaning cover; 6, cleaning wheel; 7, dust collection cover; 8, guide plate; 9, driven belt pulley; 10, driving belt pulley; 11, transmission belt; 12, annular part; 13, transmission tooth; 14, incomplete gear; 15, driving rack; 16, guide beam; 17, slider; 18, driving threaded shaft; 19, driven gear; 20, transmission rod; 21, driving block; 22, discharge pipe; 23, discharge shaft; 24, spiral auger; 25, end cover; 26, driven bevel gear; 27, driving bevel gear; 28, mounting sleeve; 29, scraper; 30, inclined guide plate; 31, push handle; 32, moving wheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0016] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the 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 thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0017] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific circumstances.

[0018] The present invention will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0019] Embodiment 1: Please refer to Figure 1 and Figure 4 , a crack repair device for road construction, including a moving bottom plate 1 and a moving box body 2 fixedly connected to the moving bottom plate 1. An installation bracket 3 is fixedly connected to the side of the moving bottom plate 1, a motor 4 is fixedly connected to the moving bottom plate 1, a cleaning cover 5 is fixedly connected to the installation bracket 3, a cleaning wheel 6 is rotatably connected inside the cleaning cover 5, and a transmission connection is provided between the wheel shaft of the cleaning wheel 6 and the rotor of the motor 4. A reciprocating dust collection cover 7 is arranged on the side of the cleaning cover 5, and the dust collection cover 7 is driven by the motor 4. The dust collection cover 7 moves along a guide plate 8 fixedly arranged on the side of the cleaning cover 5. The heights of both ends of the guide plate 8 are lower than the middle part, and when the dust collection cover 7 moves to both ends, it moves downward to be closer to the road surface. A driven belt pulley 9 is fixedly connected to the wheel shaft of the cleaning wheel 6, a driving belt pulley 10 is fixedly connected to the rotor of the motor 4, and a transmission belt 11 is sleeved between the driving belt pulley 10 and the driven belt pulley 9.

[0020] During use, the device is adjusted and then pushed to the position of the asphalt truck or concrete mixer truck. Asphalt or concrete is poured into the moving box body 2. Then, while starting the motor 4, the device is pushed to the position where crack repair is needed. The rotation of the motor 4 drives the cleaning wheel 6 to rotate. While the cleaning wheel 6 rotates, the outer cleaning brush sweeps the dust in the crack. By controlling the rotation direction of the motor 4, the cleaning brush sweeps the dust outward in a single direction. At the same time, the motor 4 drives the dust collection hood 7 to move reciprocally. When the dust collection hood 7 moves to the outermost end position, it moves downward because it fits the surface of the guide plate 8. Thus, the dust collection hood 7 can suck up the dust at a close distance. The edge position of the ground crack is more likely to accumulate dust, and this structure can clean it better. When the motor 4 rotates, it drives the driving pulley 10 to rotate. The driving pulley 10 drives the transmission belt 11 to rotate. The rotation of the transmission belt 11 drives the driven pulley 9 to rotate, and then drives the cleaning wheel 6 to rotate for cleaning.

[0021] Please refer to Figure 2 and Figure 5 As shown in, a ring-shaped member 12 is slidably connected to the moving bottom plate 1. Transmission teeth 13 are evenly distributed above and below the inner side of the ring-shaped member 12. An incomplete gear 14 is fixedly connected to the outer side of the rotor of the motor 4. The incomplete gear 14 alternately meshes with the transmission teeth 13 above and below. A driving rack 15 is fixedly connected to the side surface of the ring-shaped member 12. A guide beam 16 is fixedly connected to the mounting bracket 3. Two sliders 17 are slidably connected below the guide beam 16. The sliders 17 are both threadedly connected to the driving threaded shaft 18. The threads on the outer side of the driving threaded shaft 18 are symmetrically arranged. A driven gear 19 is fixedly connected to the end of the driving threaded shaft 18. The driven gear 19 meshes with the driving rack 15. A transmission rod 20 is rotatably connected below the slider 17. The bottom of the transmission rod 20 is rotatably connected to a driving block 21. The dust collection hood 7 is fixedly connected to the driving block 21. The bottom of the driving block 21 abuts against the guide plate 8. When the driving block 21 cooperates with both ends of the guide plate 8, the transmission rod 20 is in a vertical state under the action of the torsion spring. When the slider 17 slides inward to the position where the driving block 21 cooperates with the middle of the guide plate 8, the transmission rod 20 is in an inclined state.

[0022] The incomplete gear 14 rotates continuously and drives the annular member 12 to reciprocate. The annular member 12 further drives the driving rack 15 to reciprocate. The driving rack 15 drives the driven gear 19 to rotate and then drives the driving threaded shaft 18 to reciprocate. The driving threaded shaft 18 drives the slider 17 to reciprocate and synchronously drives the dust collection hood 7 to move. The dust collection hood 7 is a prior art, which provides strong negative pressure through a motor to achieve dust collection, and its structure is similar to that of a vacuum cleaner. The dust collection hood 7 is connected to the slider 17 through a transmission rod 20, and always fits on the upper surface of the guide plate 8 under the action of the spring force of the torsion spring during the movement of the slider 17. When the dust collection hood 7 moves to the middle position, the dust can be fully sucked. The cleaning effect of the cleaning wheel 6 here is better. However, due to the poor cleaning effect of the cleaning wheel 6 at the corner position, the dust collection hood 7 is supplemented to suck the dust to ensure the cleaning effect.

[0023] Embodiment 2: On the basis of the previous embodiment, this embodiment also specifically discloses a specific implementation manner of the discharging process: Please refer to Figure 1 and Figure 3 , a discharge pipe 22 is fixedly connected to the side of the moving box body 2. A discharge shaft 23 is rotatably connected to the inner side of the discharge pipe 22. A spiral auger 24 is fixedly connected to the outer side of the discharge shaft 23. An end cover 25 is slidably connected to the outer side of the discharge shaft 23. The end cover 25 cooperates with the end of the discharge pipe 22 to control the discharge. A driven bevel gear 26 is fixedly connected to the end of the discharge shaft 23. Two driving bevel gears 27 are symmetrically and fixedly connected to the outer side of the driving threaded shaft 18. The driving bevel gears 27 alternately mesh with the driven bevel gear 26. The end cover 25 is in snap-fit or threaded fit with the end of the discharge pipe 22. An installation sleeve 28 is fixedly connected to the outer side of the discharge shaft 23. A plurality of scraping plates 29 are connected to the installation sleeve 28. The materials discharged from the discharge pipe 22 are dispersed under the action of the scraping plates 29. A plurality of scraping plates 29 are connected to the outer side of the discharge shaft 23 through the installation sleeve 28. During the reciprocating rotation of the scraping plates 29, the discharged concrete can be leveled. The size of the scraping plates 29 can be set as required to achieve the best leveling effect.

[0024] Open the end cover 25, and the concrete or asphalt will be discharged through the discharge pipe 22. The two driving bevel gears 27 will alternately drive the driven bevel gear 26 to engage, so that the discharge shaft 23 rotates reciprocally to discharge the material. The reciprocating rotation of the discharge shaft 23 causes the concrete or asphalt to be discharged outward periodically in large quantities. When the spiral auger 24 conveys the concrete inward, only a small amount of concrete will flow out from the gap, so that the device can be moved to the position where a large amount of concrete is needed during the gap process of discharging the concrete or asphalt, which is convenient for laying the concrete and asphalt more smoothly at different positions of the gap. There are two symmetrically arranged driving bevel gears 27 that alternately engage with the driven bevel gear 26, which can realize the reciprocating motion of the driven bevel gear 26. However, since the driving screw shaft 18 itself rotates reciprocally in both forward and reverse directions, the driven bevel gear 26 can be rotated reciprocally by continuously engaging a single driving bevel gear 27 with the driven bevel gear 26. The meshing method can be determined according to the number of rotation turns of the driving screw shaft 18. When the driving screw shaft 18 rotates multiple turns during the movement of the slider 17, two driving bevel gears 27 can be used, otherwise a single driving bevel gear 27 can be selected.

[0025] A tilt guide plate 30 is fixedly connected to the lower part of the inner wall of the moving box body 2. The bottom of the tilt guide plate 30 faces the spiral auger 24. The tilt guide plate 30 guides the concrete or asphalt to the bottommost part, which is convenient for the spiral auger 24 to discharge. The components of the present application cooperate with each other, and the use effect is significantly improved. After the concrete or asphalt is laid, the concrete or asphalt can be compacted by a compaction device.

[0026] A push handle 31 is fixedly connected to the side of the moving box body 2. Moving wheels 32 are evenly distributed and connected to the bottom of the moving bottom plate 1. A storage battery for driving the motor 4 is also fixedly connected to the moving bottom plate 1. A control panel is fixedly connected to the side of the moving box body 2.

[0027] Working principle: When in use, the device is adjusted and pushed to the position of an asphalt truck or a concrete mixer truck. Asphalt or concrete is poured into the moving box body 2. Then, while starting the motor 4, the device is pushed to the position where crack repair is needed. The motor 4 rotates to drive the cleaning wheel 6 to rotate. While the cleaning wheel 6 rotates, the outer cleaning brush sweeps the dust in the crack. By controlling the rotation direction of the motor 4, the cleaning brush sweeps the dust outward in a single direction. At the same time, the motor 4 drives the dust collection hood 7 to move reciprocally. When the dust collection hood 7 moves to the outermost end position, it moves downward when it reaches the outermost end because it fits the surface of the guide plate 8, so that the dust collection hood 7 can suck up the dust at a close distance. The edge position of the ground gap is more likely to accumulate dust, and the dust can be better cleaned through this structure.

[0028] When the motor 4 rotates, it drives the driving pulley 10 to rotate. The driving pulley 10 drives the transmission belt 11 to rotate, and the rotation of the transmission belt 11 drives the driven pulley 9 to rotate, which in turn drives the cleaning wheel 6 to rotate for cleaning. The incomplete gear 14 continuously rotates and drives the annular member 12 to reciprocate. The annular member 12 further drives the driving rack 15 to reciprocate. The driving rack 15 drives the driven gear 19 to rotate, which in turn drives the driving threaded shaft 18 to reciprocate. The driving threaded shaft 18 drives the slider 17 to reciprocate and synchronously drives the dust collection cover 7 to move. The dust collection cover 7 is a prior art device that provides strong negative pressure through a motor to achieve dust suction, and its structure is similar to that of a vacuum cleaner. The dust collection cover 7 is connected to the slider 17 through a transmission rod 20 and always fits against the upper surface of the guide plate 8 under the action of the spring force of the torsion spring during the movement of the slider 17. When the dust collection cover 7 moves to the middle position, it can fully suck up the dust. At this position, the cleaning effect of the cleaning wheel 6 is better. However, at the corner position, since the cleaning effect of the cleaning wheel 6 is not good, the dust collection cover 7 is used to suck up the dust to ensure the cleaning effect.

[0029] Open the end cover 25, and the concrete or asphalt will be discharged through the discharge pipe 22. The two driving bevel gears 27 will alternately drive the driven bevel gears 26 to mesh, so that the discharge shaft 23 reciprocates to discharge the material. As the discharge shaft 23 reciprocates, the concrete or asphalt will be periodically discharged outward in large quantities. When the spiral auger 24 conveys the concrete inward, only a small amount of concrete will flow out through the gaps. Thus, during the gap of discharging the concrete or asphalt, the device can be moved to the position where a large amount of concrete is needed, which is convenient for laying the concrete and asphalt more smoothly at different positions of the gap. A plurality of scraping plates 29 are connected to the outside of the discharge shaft 23 through a mounting sleeve 28. During the reciprocating rotation of the scraping plates 29, the discharged concrete can be leveled. The size of the scraping plates 29 can be set as required to achieve the best leveling effect.

[0030] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0031] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A crack repair device for highway construction, comprising a moving bottom plate (1) and a moving box body (2) fixedly connected to the moving bottom plate (1), wherein an installation bracket (3) is fixedly connected to the side of the moving bottom plate (1), and is characterized in that, A motor (4) is fixedly connected to the moving bottom plate (1). A cleaning cover (5) is fixedly connected to the mounting bracket (3). A cleaning wheel (6) is rotatably connected inside the cleaning cover (5). A transmission connection is provided between the wheel shaft of the cleaning wheel (6) and the rotor of the motor (4). A reciprocatingly moving dust collection cover (7) is arranged on the side of the cleaning cover (5). The dust collection cover (7) is driven by the motor (4). The dust collection cover (7) moves along a guide plate (8) fixedly arranged on the side of the cleaning cover (5). The heights of both ends of the guide plate (8) are lower than the middle part. When the dust collection cover (7) moves to both ends, it moves downward to be closer to the road surface.

2. The crack repair device for highway construction according to claim 1, characterized in that, A driven belt pulley (9) is fixedly connected to the wheel shaft of the cleaning wheel (6). A driving belt pulley (10) is fixedly connected to the rotor of the motor (4). A transmission belt (11) is sleeved between the driving belt pulley (10) and the driven belt pulley (9).

3. The crack repair device for highway construction according to claim 1, characterized in that, An annular member (12) is slidably connected to the moving bottom plate (1). Transmission teeth (13) are evenly distributed above and below the inner side of the annular member (12). An incomplete gear (14) is fixedly connected to the outer side of the rotor of the motor (4). The incomplete gear (14) alternately meshes with the transmission teeth (13) above and below. A driving rack (15) is fixedly connected to the side of the annular member (12). A guide beam (16) is fixedly connected to the mounting bracket (3). Two sliders (17) are slidably connected below the guide beam (16). The sliders (17) are both threadedly connected to a driving threaded shaft (18). The threads on the outer side of the driving threaded shaft (18) are symmetrically arranged. A driven gear (19) is fixedly connected to the end of the driving threaded shaft (18). The driven gear (19) meshes with the driving rack (15). A transmission rod (20) is rotatably connected below the slider (17). The bottom of the transmission rod (20) is rotatably connected to a driving block (21). The dust collection cover (7) is fixedly connected to the driving block (21). The bottom of the driving block (21) abuts against the guide plate (8). When the driving block (21) cooperates with both ends of the guide plate (8), the transmission rod (20) is in a vertical state under the action of a torsion spring. When the slider (17) slides inward to make the driving block (21) cooperate with the middle position of the guide plate (8), the transmission rod (20) is in an inclined state.

4. The crack repair device for highway construction according to claim 3, characterized in that, A discharge pipe (22) is fixedly connected to the side of the moving box body (2). A discharge shaft (23) is rotatably connected inside the discharge pipe (22). A spiral auger (24) is fixedly connected to the outer side of the discharge shaft (23). An end cover (25) is slidably connected to the outer side of the discharge shaft (23). The end cover (25) cooperates with the end of the discharge pipe (22) to control the discharge. A driven bevel gear (26) is fixedly connected to the end of the discharge shaft (23). Two driving bevel gears (27) are symmetrically and fixedly connected to the outer side of the driving threaded shaft (18). The driving bevel gears (27) alternately mesh with the driven bevel gear (26).

5. The crack repair device for road construction according to claim 4, characterized in that, The end cover (25) is in snap-fit or threaded fit with the end of the discharge pipe (22).

6. The crack repair device for highway construction according to claim 4, characterized in that, A mounting sleeve (28) is fixedly connected to the outer side of the discharge shaft (23). A plurality of scraping plates (29) are connected to the mounting sleeve (28). The materials discharged from the discharge pipe (22) are dispersed under the action of the scraping plates (29).

7. The crack repair device for highway construction according to claim 4, characterized in that, A tilt guide plate (30) is fixedly connected to the lower part of the inner wall of the moving box body (2), and the bottom of the tilt guide plate (30) faces the spiral auger (24).

8. The crack repair device for highway construction according to claim 1, characterized in that, A push handle (31) is fixedly connected to the side of the moving box body (2), moving wheels (32) are evenly distributed and connected to the bottom of the moving bottom plate (1), a storage battery for driving the motor (4) is also fixedly connected to the moving bottom plate (1), and a control panel is fixedly connected to the side of the moving box body (2).

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