Crack welding device for road maintenance
By introducing a cleaning mechanism and an electric rotating brush into the crack welding device, the problem of debris around the crack affecting the adhesion of the repair material was solved, resulting in a more robust repair effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU YUNDUANQI CONSTR ENG CO LTD
- Filing Date
- 2025-04-09
- Publication Date
- 2026-04-17
AI Technical Summary
During the road crack filling and repair process, the soil, sand, gravel, plants and other debris around the cracks were not cleaned up, which affected the adhesion of the repair material, resulting in an unstable repair layer that was easy to peel off and the cracks to expand again.
A crack welding device was designed, comprising a frame, a heating system, and a cleaning mechanism. Equipped with a servo motor and an electric rotating cleaning brush, the device cleans the cracks by raising and lowering the drive rod and support frame. The electric brush can be easily replaced through the installation mechanism to ensure cleaning effectiveness.
It effectively cleans debris around cracks, improves the adhesion of repair materials, enhances the firmness of the repair layer, and prevents the repair layer from peeling off and cracks from widening.
Smart Images

Figure CN224133531U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of crack welding technology in road maintenance, and in particular to a crack welding device for road maintenance. Background Technology
[0002] Crack welding devices used in road maintenance are typically used to repair cracks on road surfaces and extend the service life of roads. Their main function is to melt materials such as hot-melt asphalt and resin, and then evenly fill and seal the cracks to prevent moisture and debris from entering. They are commonly used in road construction and maintenance.
[0003] Existing technologies, such as the utility model patent with publication number CN221989055U, disclose a crack welding device for road maintenance. This patent includes a base and a mixing tank. The upper surface of the base is fixedly connected to the mixing tank, and a first motor is fixedly connected to the upper surface of the mixing tank. A rotating rod is fixedly connected to the output end of the first motor, and a stirring rod is fixedly connected to the outer surface of the rotating rod. A partition is fixedly connected to the inner wall of the mixing tank, and a discharge pipe is provided on one side of the partition. This crack welding device for road maintenance uses the first motor and stirring rod to stir the material in the mixing tank to prevent it from piling up. Then, through the setting of a second motor and a grinding disc, the grinding disc polishes the surface by raising and lowering a hydraulic rod. The material enters a material box, and a third motor and conveying blades transport the material, thus achieving the polishing effect.
[0004] During road construction and maintenance, it was found that when filling and repairing road cracks, debris such as mud, sand, and plants often accumulate around the cracks. If these are not cleaned, the adhesion of the repair material will be affected, resulting in an unstable repair layer. This can lead to the repair layer peeling off and the cracks widening again. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies in the process of filling and repairing road cracks. Because the area around the cracks typically contains debris such as mud, sand, and vegetation, failure to clean this debris can affect the adhesion of the repair material, resulting in an unstable repair layer, which in turn leads to peeling and further expansion of the crack.
[0006] To solve the above-mentioned technical problems, this utility model provides a crack welding device for road maintenance, comprising: a frame, a heating system, and an installation mechanism. A melting and repair material tank is provided on the upper surface of the frame. The heating system is located on the side of the frame surface near the melting and repair material tank. A mounting frame is fixedly connected to the end of the frame near the melting and repair material tank. A conveying and spraying module is provided on the surface of the mounting frame corresponding to the position of the melting and repair material tank. The bottom end of the melting and repair material tank is fixedly connected to the conveying and spraying module. A cleaning mechanism is provided on the surface of the mounting frame, the cleaning mechanism including a servo motor and an electric rotary cleaning mechanism. The brush plate has a servo motor whose surface is fixedly connected to the surface of the mounting bracket. A drive rod is fixedly connected to the output end of the servo motor. A fixed bracket is fixedly connected to one side of the mounting bracket. The bottom surface of the fixed bracket is rotatably connected to the bottom end of the drive rod. A connecting bracket is fixedly connected to one side of the mounting bracket. A limit rod is fixedly connected to the inner wall of the connecting bracket. A support bracket is threaded to the arc surface of the drive rod. The other end of the support bracket slides through the arc surface of the limit rod. Mounting plates are fixedly connected to the bottom surfaces of both ends of the support bracket. The surface of the mounting plate is fixedly connected to the electrically rotating cleaning brush plate by means of a mounting mechanism.
[0007] The effect achieved by the above-mentioned components is that, when filling and repairing cracks in the road surface, in order to facilitate the cleaning of dirt in the cracks, the cleaning mechanism set on the surface of the mounting bracket on one side of the frame can be used to clean the cracks in the road surface, which helps to further repair the cracks.
[0008] Preferably, the bottom arc surfaces of the driving rod and the limiting rod are both fitted with baffles, the lower surface of the baffles is fixedly connected with springs, the inner walls of the two springs are slidably connected to the driving rod and the limiting rod respectively, and the bottom ends of the two springs are fixedly connected to the bottom surfaces of the fixing frame and the connecting frame respectively.
[0009] The effect achieved by the above components is that, with the extrusion force generated by the baffle and spring, the two ends of the support frame can be protected, avoiding direct collision damage between the support frame and the connecting frame and the fixed frame.
[0010] Preferably, a support pad, which is a silicone pad, is fixedly connected to the upper surface of the baffle.
[0011] The effect achieved by the above components is that the silicone support pads can effectively protect the baffle and increase its stability.
[0012] Preferably, the support frame is a hard alloy frame, and the cross-sectional dimensions of the support frame are adapted to the cross-sectional dimensions of the mounting frame.
[0013] The effect achieved by the above components is that the support frame made of hard alloy material can be used for a long time without causing excessive deformation.
[0014] Preferably, the mounting plate surface is provided with a mounting mechanism corresponding to the position of the electric rotating cleaning brush. The mounting mechanism includes two insertion holes, which are opened on both sides of the mounting plate surface. Positioning plates are fixedly connected to both sides of the upper surface of the electric rotating cleaning brush. Positioning holes are opened on the surface of the positioning plates. The surface of the positioning plates is inserted into the inner wall of the insertion holes. Connecting plates are fixedly connected to both sides of the mounting plate surface. The same pull rod slides through the inner wall of the two connecting plates. The cross-section of the pull rod is U-shaped. Positioning posts are fixedly connected to both ends of the pull rod. The arc surface of the positioning post is inserted into the inner wall of the positioning hole.
[0015] The effect achieved by the above components is that when the electric rotary cleaning brush plate on the lower surface of the mounting plate is used for a long time, the electric rotary cleaning brush plate can be replaced by means of the mounting mechanism on the surface of the mounting plate. It is connected by means of the positioning plate and the insertion hole on the surface of the mounting plate, and then the positioning pins at both ends of the pull rod are used for docking and fixing, which helps to facilitate the positioning operation of the electric rotary cleaning brush plate.
[0016] Preferably, a protective sleeve is fixedly connected to the arc surface of the pull rod, and the surface of the protective sleeve is provided with anti-slip texture.
[0017] The effect achieved by the above-mentioned components is that when the pull rod is stretched, the protective sleeve set on the arc surface of the pull rod can be used for assistance, which can increase the friction effect.
[0018] Preferably, the two ends of the pull rod are fitted with tension springs, and the two ends of the tension springs are fixedly connected to the positioning post and the connecting plate, respectively.
[0019] The effect achieved by the above components is that, with the tensile force generated by the tension spring, the position of the pull rod can be stretched and limited to prevent the pull rod from falling off.
[0020] Compared with related technologies, the crack welding device for road maintenance provided by this utility model has the following advantages:
[0021] This utility model provides a crack welding device for road maintenance. By operating the cleaning mechanism, the position of the entire electric rotating cleaning brush can be raised and lowered. With the help of a servo motor to drive the rotation of the drive rod, the support frame at the upper end of the electric rotating cleaning brush can be raised and lowered along the drive rod and the limit rod, which helps to perform deep cleaning operations on roads at different heights.
[0022] By operating the installation mechanism, the replacement limit of the electric rotary cleaning brush is achieved. The positioning plates fixed on both sides of the upper end of the electric rotary cleaning brush are inserted and fixed with the insertion holes on the surface of the mounting plate. At the same time, pulling the pull rod allows the positioning pins fixed at both ends of the pull rod to insert and limit the positioning with the positioning holes on the surface of the positioning plate by means of the squeezing force generated by the tension spring. This helps to quickly and conveniently replace the old and damaged electric rotary cleaning brush after long-term cleaning. Attached Figure Description
[0023] Figure 1 A schematic diagram of the structure of a crack welding device for road maintenance provided by this utility model;
[0024] Figure 2 for Figure 1 The diagram shown is a structural schematic of the cleaning mechanism.
[0025] Figure 3 for Figure 2 The enlarged structural diagram at point A is shown below;
[0026] Figure 4 for Figure 1 The diagram shows the structure of the installation mechanism.
[0027] The diagram shows the following components: 1. Frame; 2. Melting and repair material tank; 3. Mounting frame; 4. Cleaning mechanism; 401. Servo motor; 402. Drive rod; 403. Support frame; 404. Mounting plate; 405. Electric rotating cleaning brush; 406. Connecting frame; 407. Limiting rod; 408. Spring; 409. Baffle; 410. Fixing frame; 411. Support pad; 5. Mounting mechanism; 51. Connecting plate; 52. Positioning plate; 53. Positioning hole; 54. Insertion hole; 55. Tension spring; 56. Positioning column; 57. Pull rod; 58. Protective sleeve; 6. Conveying spray module; 7. Heating system. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0029] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.
[0030] Please see Figures 1 to 4This utility model provides a crack welding device for road maintenance, comprising: a frame 1, a heating system 7, and an installation mechanism 5. A melting and repair material barrel 2 is provided on the upper surface of the frame 1. The heating system 7 is provided on the side of the frame 1 near the melting and repair material barrel 2. An installation frame 3 is fixedly connected to the end of the frame 1 near the melting and repair material barrel 2. A conveying and spraying module 6 is provided on the surface of the installation frame 3 corresponding to the position of the melting and repair material barrel 2. The bottom end of the melting and repair material barrel 2 is fixedly connected to the conveying and spraying module 6. A cleaning mechanism 4 is provided on the surface of the installation frame 3. An installation mechanism 5 is provided on the surface of the installation plate 404 corresponding to the position of the electric rotating cleaning brush 405.
[0031] In the embodiments of this utility model, please refer to Figure 2 and Figure 3 The cleaning mechanism 4 includes a servo motor 401 and an electric rotating cleaning brush 405. The surface of the servo motor 401 is fixedly connected to the surface of the mounting bracket 3. A drive rod 402 is fixedly connected to the output end of the servo motor 401. A fixing bracket 410 is fixedly connected to one side of the mounting bracket 3. The bottom surface of the fixing bracket 410 is rotatably connected to the bottom end of the drive rod 402. A connecting bracket 406 is fixedly connected to one side of the mounting bracket 3. A limit rod 407 is fixedly connected to the inner wall of the connecting bracket 406. A support bracket 403 is threadedly connected to the arc surface of the drive rod 402. The other end of the support bracket 403 slides through the arc surface of the limit rod 407. The bottom surfaces of both ends of the support bracket 403 are fixedly connected to a mounting bracket. Mounting plate 404 is fixedly connected to electric rotating cleaning brush 405 via mounting mechanism 5. Baffles 409 are fitted on the bottom arc surfaces of drive rod 402 and limit rod 407. Springs 408 are fixedly connected to the lower surface of baffles 409. The inner walls of the two springs 408 are slidably connected to drive rod 402 and limit rod 407 respectively. The bottom ends of the two springs 408 are fixedly connected to the bottom surfaces of fixing frame 410 and connecting frame 406 respectively. Support pad 411 is fixedly connected to the upper surface of baffle 409. Support pad 411 is a silicone pad. Support frame 403 is a hard alloy frame. The cross-sectional dimensions of support frame 403 are adapted to the cross-sectional dimensions of mounting frame 3.
[0032] In the embodiments of this utility model, please refer to Figure 4The mounting mechanism 5 includes two insertion holes 54, which are located on both sides of the surface of the mounting plate 404. Positioning plates 52 are fixedly connected to both sides of the upper surface of the electric rotating cleaning brush 405. Positioning holes 53 are provided on the surface of the positioning plates 52. The surface of the positioning plates 52 is inserted into the inner wall of the insertion holes 54. Connecting plates 51 are fixedly connected to both sides of the surface of the mounting plate 404. The same pull rod 57 slides through the inner wall of the surface of the two connecting plates 51. The cross-section of the pull rod 57 is U-shaped. Positioning posts 56 are fixedly connected to both ends of the pull rod 57. The arc surface of the positioning posts 56 is inserted into the inner wall of the positioning holes 53. A protective sleeve 58 is fixedly connected to the arc surface of the pull rod 57. The surface of the protective sleeve 58 is provided with anti-slip texture. Tension springs 55 are sleeved on the arc surfaces of both ends of the pull rod 57. The two ends of the tension springs 55 are fixedly connected to the positioning posts 56 and the connecting plates 51, respectively.
[0033] The working principle of the crack welding device for road maintenance provided by this utility model is as follows: Due to the long-term traffic load, the road surface material will gradually lose its original strength, resulting in cracks. At this time, the crack welding device for road maintenance will be used for auxiliary protection. The frame 1 is moved to the location of the crack. The heating system 7 melts the asphalt, resin and other materials in the melting repair material bucket 2. Then, the conveying spray module 6 is used to evenly fill and seal the crack with the repair material to prevent water and debris from entering the crack and thus prevent the crack from expanding further.
[0034] During this process, dirt and debris can easily accumulate in road cracks. If the repair material is not properly filled during the cleaning process, the cracks may not be completely sealed. In this case, the cleaning mechanism 4 on the surface of the mounting frame 3 can be used for assistance. When the frame 1 moves to the crack, the servo motor 401 is driven, causing the drive rod 402 to rotate. The drive rod 402 then moves the support frame 403 up and down. Simultaneously, the other end of the support frame 403 slides along the limiting rod 407 inside the connecting frame 406 until the mounting plates 404 on both sides of the bottom of the support frame 403 drive the electrically rotating cleaning brush 405 to contact the road surface at the crack, thereby allowing... The electric rotary cleaning brush 405 cleans the road surface. After prolonged use, the electric rotary cleaning brush 405 can be replaced using the mounting mechanism 5. First, the positioning plates 52 on both sides of the upper end of the electric rotary cleaning brush 405 are inserted into the insertion holes 54 on the surface of the mounting plate 404. Then, the pull rod 57 on one side of the surface of the mounting plate 404 is pulled, so that the two ends of the pull rod 57 overcome the squeezing force generated by the tension spring 55, and the positioning pins 56 fixed at both ends of the pull rod 57 are inserted into the positioning holes 53 on the surface of the positioning plate 52 for limiting the position. This allows for quick replacement of the electric rotary brush.
[0035] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.
[0036] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A crack welding device for road maintenance, characterized in that, include: The machine includes a frame (1), a heating system (7), and an installation mechanism (5). A melting and repair material tank (2) is mounted on the upper surface of the frame (1). The heating system (7) is located on the side of the frame (1) near the melting and repair material tank (2). A mounting frame (3) is fixedly connected to one end of the frame (1) near the melting and repair material tank (2). A conveying and spraying module (6) is mounted on the surface of the mounting frame (3) corresponding to the position of the melting and repair material tank (2). The bottom end of the melting and repair material tank (2) is fixedly connected to the conveying and spraying module (6). A cleaning mechanism (4) is mounted on the surface of the mounting frame (3). The cleaning mechanism (4) includes a servo motor (401) and an electric rotating cleaning brush (405). The surface of the servo motor (401) is fixedly connected to the surface of the mounting frame (3). The output end of the servo motor (401) is fixedly connected to a drive rod (402). A fixed frame (410) is fixedly connected to one side of the mounting frame (3). The bottom surface of the fixed frame (410) is rotatably connected to the bottom end of the drive rod (402). A connecting frame (406) is fixedly connected to one side of the mounting frame (3). A limit rod (407) is fixedly connected to the inner wall of the connecting frame (406). A support frame (403) is threadedly connected to the arc surface of the drive rod (402). The other end of the support frame (403) slides through the arc surface of the limit rod (407). Mounting plates (404) are fixedly connected to the bottom surfaces of both ends of the support frame (403). The surface of the mounting plate (404) is fixedly connected to the electric rotating cleaning brush (405) by means of the mounting mechanism (5).
2. The crack melting apparatus for road maintenance according to claim 1, wherein Both the drive rod (402) and the limiting rod (407) have baffles (409) fitted on their bottom arc surfaces. The lower surface of the baffles (409) is fixedly connected to springs (408). The inner walls of the two springs (408) are slidably connected to the drive rod (402) and the limiting rod (407) respectively. The bottom ends of the two springs (408) are fixedly connected to the bottom surfaces of the fixing frame (410) and the connecting frame (406) respectively.
3. The crack melting apparatus for road maintenance according to claim 2, wherein A support pad (411) is fixedly connected to the upper surface of the baffle (409), and the support pad (411) is a silicone pad.
4. The apparatus for crack welding for road maintenance as claimed in claim 1 wherein, The support frame (403) is a hard alloy frame, and the cross-sectional dimensions of the support frame (403) are adapted to the cross-sectional dimensions of the mounting frame (3).
5. The apparatus for crack welding for road maintenance according to claim 1, wherein The mounting plate (404) is provided with a mounting mechanism (5) corresponding to the position of the electric rotating cleaning brush (405). The mounting mechanism (5) includes two insertion holes (54), which are opened on both sides of the surface of the mounting plate (404). Positioning plates (52) are fixedly connected to both sides of the upper surface of the electric rotating cleaning brush (405). Positioning holes (53) are opened on the surface of the positioning plates (52). The surface of the positioning plates (52) is inserted into the inner wall of the insertion holes (54). Connecting plates (51) are fixedly connected to both sides of the surface of the mounting plate (404). The same pull rod (57) slides through the inner wall of the surface of the two connecting plates (51). The cross section of the pull rod (57) is "U". Positioning posts (56) are fixedly connected to both ends of the pull rod (57). The arc surface of the positioning post (56) is inserted into the inner wall of the positioning hole (53).
6. The apparatus for crack welding for road maintenance according to claim 5, wherein The arc surface of the pull rod (57) is fixedly connected to a protective sleeve (58), and the surface of the protective sleeve (58) is provided with anti-slip texture.
7. The apparatus for crack welding for road maintenance according to claim 5, wherein The two ends of the pull rod (57) are fitted with tension springs (55), and the two ends of the tension springs (55) are fixedly connected to the positioning post (56) and the connecting plate (51) respectively.
Citation Information
Patent Citations
Crack welding device for road maintenance
CN221989055U