A road crack repairing device for municipal engineering
By designing structures such as rotating rods, stirring blades, and scrapers, the problem of blockage caused by the hardening of grouting materials in a static state was solved, achieving material flowability and the flexibility and durability of the repair device, thereby improving repair efficiency and quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINHUANGDAO XIANGLIN CONSTRUCTION ENGINEERING CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-06-19
AI Technical Summary
Existing road crack repair devices are prone to the crack filling material drying and hardening when stationary, leading to blockage of the pump and pipes, prolonging repair time and increasing maintenance costs.
A road crack repair device for municipal engineering was designed, which adopts a combination structure of rotating rod, mixing blade, scraper, first conical tooth and second conical tooth to realize the mixing and scraping of materials in the cylinder. Combined with the use of conveying pipe and mud pump, the flowability of materials is ensured. At the same time, it provides a variety of discharge heads and scraper and pressure roller structures to adapt to the repair needs of different crack widths and depths.
It effectively prevents materials from drying and hardening and clogging, improves repair efficiency and flexibility, ensures material flowability and repair quality, and enhances the adaptability and durability of the equipment.
Smart Images

Figure CN224378668U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of municipal engineering technology, and in particular to a road crack repair device for municipal engineering. Background Technology
[0002] Cracks are a common problem in asphalt pavements during the construction of municipal roads. Repairing road cracks is a common and important task. If road cracks are not repaired in time, they can lead to problems such as rainwater seepage and roadbed damage, affecting the service life of the road and driving safety. There are many ways to treat asphalt pavement cracks, one of which is a simple and efficient method: crack sealing.
[0003] A search revealed that Chinese Patent Publication No. CN221029505U discloses a road crack repair device, including a housing for installing the road crack repair device. A sealant tank is fixedly installed on the top surface of the housing, and a water pump is fixedly connected to one side of the sealant tank via a pipe. A telescopic sealant pipe is fixedly connected to the outlet of the water pump. A fan and a filter box are fixedly connected to the top surface of the housing. This device can effectively absorb and filter the dust generated during crack cleaning, thereby effectively cleaning the dust in the cracks while preventing dust from polluting the working environment.
[0004] While the aforementioned patent facilitates the absorption and filtration of dust generated during crack cleaning, the crack filling material inside the hopper tends to harden and dry in a static state, leading to blockages in the pump and pipes. This blockage not only prolongs repair time but may also damage the equipment and increase maintenance costs. Therefore, it is necessary to design a road crack repair device for municipal engineering to solve the above problems. Utility Model Content
[0005] The main purpose of this utility model is to provide a road crack repair device for municipal engineering, which can effectively solve the problems in the background art.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0007] A road crack repair device for municipal engineering includes a frame. A material cylinder is fixedly connected to the middle of the inner bottom wall of the frame. A guide plate is fixedly connected to the inner bottom wall of the material cylinder. A rotating rod is fixedly connected to the middle of the inner top wall of the material cylinder. The rotating rod passes through the material cylinder, the guide plate, and the frame. A fixing rod is fixedly connected to the middle of the outer surface of the rotating rod. A stirring blade is fixedly connected to the outer surface of the fixing rod. A scraper is fixedly connected to one end of the fixing rod. A first conical tooth is fixedly connected to one end of the rotating rod. Rollers are rotatably connected to both sides of the middle of the lower surface of the frame. A connecting rod is fixedly connected to the middle of the inner side of the roller. A second conical tooth is fixedly connected to the middle of the outer surface of the connecting rod. The second conical tooth and the first conical tooth are meshed together.
[0008] In order to facilitate the transport of materials, as a road crack repair device for municipal engineering of this utility model, a conveying pipe is fixedly connected to the bottom of the outer surface of the material cylinder, and a mud pump is fixedly connected to one side of the outer surface of the conveying pipe. The mud pump is fixedly connected to the vehicle frame.
[0009] In order to achieve the effect of easy handheld fixed pipe repair of roads, as a road crack repair device for municipal engineering of this utility model, one end of the conveying pipe is fixedly connected to a fixed pipe, one end of the fixed pipe is fixedly connected to a first discharge head, and the outer surface of the first discharge head is fixedly connected to a first control valve.
[0010] In order to facilitate the placement on the vehicle frame for road repair, as a road crack repair device for municipal engineering of this utility model, a second discharge head is fixedly connected to the lower surface of the fixed pipe, and a second control valve is fixedly connected to the outer surface of the second discharge head.
[0011] In order to facilitate clamping and fixing the pipe, as a road crack repair device for municipal engineering of this utility model, clamping members are fixedly connected to both sides of the upper surface of the frame near the fixing pipe, and the outer surface of the clamping members is threaded with limit bolts.
[0012] In order to facilitate the removal of excess material, as a road crack repair device for municipal engineering of this utility model, a first support rod is fixedly connected to the middle of the lower surface of the frame, a scraper is rotatably connected to the outer surface of the first support rod, and a rotating shaft is rotatably connected to both sides of the outer surface of the scraper. An adjusting rod is rotatably connected inside the rotating shaft, and the adjusting rod is threadedly connected to the frame.
[0013] In order to facilitate the compaction of materials, as a road crack repair device for municipal engineering of this utility model, a bracket is rotatably connected to the inner side of the frame away from the fixed pipe, and a pressure roller is rotatably connected to the bottom of the inner side of the bracket.
[0014] To facilitate adjustment of the pressure roller position, as a road crack repair device for municipal engineering of this utility model, a second support rod is fixedly connected to one side of the inner side of the bracket, and a telescopic member is rotatably connected to the middle of the outer surface of the second support rod. One end of the telescopic member is rotatably connected to a connecting seat, and the connecting seat is fixedly connected to the frame. The telescopic member can be an electric or hydraulic structure.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] 1. In this utility model, by setting up a rotating rod, stirring blade, scraper, first conical tooth, and second conical tooth, when the frame moves, the roller rotates accordingly. The connecting rod drives the rotating rod to rotate through the second conical tooth and the first conical tooth. The stirring blade, along with the rotation of the rotating rod, stirs the filling material in the material cylinder, preventing the material from drying and hardening in a static state. This effectively solves the problem of material clogging the pump body and pipes. At the same time, the scraper removes the material adhering to the inner wall of the material cylinder, further preventing the material from drying and hardening and clogging. It also ensures the fluidity of the material in the material cylinder, enabling the device to achieve linkage between movement and stirring, thus improving work efficiency.
[0017] 2. In this utility model, the first discharge head, second discharge head, scraper, adjusting rod, and pressure roller are arranged so that the first discharge head is easy to use when holding the fixed pipe and convenient for locations where the repair device is inconvenient to move. Multiple second discharge heads are fixed on the lower surface of the fixed pipe, so that the device can select to use the first or second discharge head according to different crack widths and depths, improving the flexibility of repair. The scraper is used to scrape off excess crack filling material on the road surface after repair, keeping the road surface clean and flat. The adjusting rod can adjust the angle and height of the scraper according to the actual road surface conditions to adapt to different repair needs. Through the rotation of the pressure roller, the crack filling material after repair is compacted to ensure that the material is tightly bonded to the road surface and improve the durability of the repair. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present utility model;
[0019] Figure 2 This is a cross-sectional planar structural diagram of an embodiment of the present utility model;
[0020] Figure 3 This is a schematic diagram of the internal structure of the material cylinder according to an embodiment of the present utility model;
[0021] Figure 4 This is a schematic diagram of the vehicle frame structure according to an embodiment of the present utility model;
[0022] Figure 5 This is a schematic diagram of the fixed tube structure according to an embodiment of the present utility model.
[0023] In the diagram: 1. Frame; 2. Material cylinder; 3. Guide plate; 4. Rotating rod; 5. Fixed rod; 6. Agitator blade; 7. Scraper; 8. First conical tooth; 9. Roller; 10. Connecting rod; 11. Second conical tooth; 12. Conveying pipe; 13. Mud pump; 14. Fixed pipe; 15. First discharge head; 16. First control valve; 17. Second discharge head; 18. Second control valve; 19. Clamping component; 20. Limiting bolt; 21. First support rod; 22. Scraper; 23. Adjusting rod; 24. Bracket; 25. Pressure roller; 26. Second support rod; 27. Telescopic component; 28. Connecting seat; 29. Rotating shaft. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Example
[0026] like Figure 1-5 As shown, a road crack repair device for municipal engineering includes a frame 1. A material cylinder 2 is fixedly connected to the middle of the inner bottom wall of the frame 1. A guide plate 3 is fixedly connected to the inner bottom wall of the material cylinder 2. A rotating rod 4 is fixedly connected to the middle of the inner top wall of the material cylinder 2. The rotating rod 4 passes through the material cylinder 2, the guide plate 3 and the frame 1. A fixing rod 5 is fixedly connected to the middle of the outer surface of the rotating rod 4. A stirring blade 6 is fixedly connected to the outer surface of the fixing rod 5. A scraper 7 is fixedly connected to one end of the fixing rod 5. A first conical tooth 8 is fixedly connected to one end of the rotating rod 4. Rollers 9 are rotatably connected to both sides of the middle of the lower surface of the frame 1. A connecting rod 10 is fixedly connected to the middle of the inner side of the roller 9. A second conical tooth 11 is fixedly connected to the middle of the outer surface of the connecting rod 10. The second conical tooth 11 is meshed with the first conical tooth 8.
[0027] In practical use, through the arrangement of rotating rod 4, stirring blade 6, scraper 7, first conical tooth 8, roller 9, and second conical tooth 11, the moving wheels at the four corners of the lower surface of the frame 1 can be powered by drive motors, making the frame 1 easy to move. The material cylinder 2 is used to store the grouting material, and the guide plate 3 allows the grouting material to flow better towards the conveying pipe 12, reducing residue inside the material cylinder 2. When the frame 1 moves, the roller 9 rotates accordingly. The connecting rod 10 connects the two rollers 9 and supports the second conical tooth 11, allowing the second conical tooth 11 to pass through the first... The conical teeth 8 drive the rotating rod 4 to rotate. The stirring blade 6 is fixed to the rotating rod 4 by the fixing rod 5. As the rotating rod 4 rotates, the stirring blade 6 stirs the filling material in the material cylinder 2, preventing the material from drying and hardening in a static state. This effectively solves the problem of material clogging the pump body and pipes. The scraper 7 is fixed to one end of the fixing rod 5. As the rotating rod 4 rotates, it can scrape off the material adhering to the inner wall of the material cylinder 2, further preventing the material from drying and hardening and clogging. At the same time, it ensures the fluidity of the material in the material cylinder 2, enabling the device to achieve linkage between movement and stirring, thus improving work efficiency.
[0028] In this embodiment, a conveying pipe 12 is fixedly connected to the bottom of the outer surface of the material cylinder 2, and a mud pump 13 is fixedly connected to one side of the outer surface of the conveying pipe 12. The mud pump 13 is fixedly connected to the frame 1.
[0029] In practical use, the conveying pipe 12 connects the material cylinder 2 and the fixed pipe 14, and the mud pump 13 provides power for conveying the crack filling material, ensuring that the crack filling material can be smoothly conveyed from the material cylinder 2 to the crack, which improves the efficiency of material conveying and avoids unevenness and waste caused by manual material conveying.
[0030] In this embodiment, a fixed pipe 14 is fixedly connected to one end of the conveying pipe 12, a first discharge head 15 is fixedly connected to one end of the fixed pipe 14, and a first control valve 16 is fixedly connected to the outer surface of the first discharge head 15.
[0031] In practical use, the first discharge head 15 is convenient for holding the fixed tube 14, making it easy to repair the device in locations where it is inconvenient to move, thus increasing the device's range of applications. The first control valve 16 facilitates precise control of the discharge flow rate, ensuring repair quality.
[0032] In this embodiment, a second discharge head 17 is fixedly connected to the lower surface of the fixed tube 14, and a second control valve 18 is fixedly connected to the outer surface of the second discharge head 17.
[0033] In practical use, multiple second discharge heads 17 are fixed on the lower surface of the fixed tube 14. The second control valve 18 can control the operating status of the second discharge heads 17, so that the device can select to use the first discharge head 15 or the second discharge head 17 according to different crack widths and depths, thus improving the flexibility of repair.
[0034] In this embodiment, clamping members 19 are fixedly connected to both sides of the upper surface of the frame 1 near the fixing tube 14, and limit bolts 20 are threadedly connected to the outer surface of the clamping members 19.
[0035] In practical use, the clamping member 19 is used to clamp the fixed tube 14, and the limiting bolt 20 can adjust the tightness of the clamping to ensure that the fixed tube 14 is stable during the repair process and will not be displaced due to external force, thereby improving the accuracy and safety of the repair.
[0036] In this embodiment, a first support rod 21 is fixedly connected to the middle of the lower surface of the frame 1. A scraper 22 is rotatably connected to the outer surface of the first support rod 21. A rotating shaft 29 is rotatably connected to both sides of the outer surface of the scraper 22. An adjusting rod 23 is rotatably connected inside the rotating shaft 29. The adjusting rod 23 is threadedly connected to the frame 1.
[0037] In practical use, the rotating shaft 29 connects the adjusting rod 23 and the scraper 22. Under the action of the adjusting rod 23, the rotating shaft 29 is driven to move up and down. While the rotating shaft 29 moves up and down, the angle and position of the scraper 22 change to adapt to the position change of the rotating shaft 29. This allows the adjusting rod 23 to drive the scraper 22 to adjust the angle and height according to the actual road conditions, adapting to different repair needs. The scraper 22 on the lower surface of the frame 1 is used to scrape off excess crack filling material on the road surface after repair, keeping the road surface clean and smooth.
[0038] In this embodiment, a bracket 24 is rotatably connected to the inner side of the frame 1 away from the fixed tube 14, and a pressure roller 25 is rotatably connected to the bottom of the inner side of the bracket 24.
[0039] In practical use, the bracket 24 is used to support the pressure roller 25. The rotation of the pressure roller 25 compacts the repaired crack filling material, ensuring that the material is tightly bonded to the road surface and improving the durability of the repair.
[0040] In this embodiment, a second support rod 26 is fixedly connected to one side of the inner side of the bracket 24, and a telescopic member 27 is rotatably connected to the middle of the outer surface of the second support rod 26. One end of the telescopic member 27 is rotatably connected to a connecting seat 28, and the connecting seat 28 is fixedly connected to the frame 1. The telescopic member 27 can be an electric or hydraulic structure.
[0041] In practical use, the telescopic component 27 can be an electric or hydraulic structure to provide stable power and ensure that the pressure roller 25 can be adjusted in position as needed. The connecting seat 28 connects the telescopic component 27 to the frame 1, ensuring the stability of the entire device.
[0042] Working principle: During use, the moving wheels at the bottom of the frame 1 can be powered by a drive motor, making the frame 1 easy to move. The roller 9 rotates accordingly. The connecting rod 10 drives the rotating rod 4 to rotate through the second conical tooth 11 and the first conical tooth 8. The stirring blade 6 stirs the filling material in the material cylinder 2 to prevent the material from drying and hardening in a static state. At the same time, the scraper 7 scrapes off the material adhering to the inner wall of the material cylinder 2 to further prevent the material from drying and hardening and clogging. The conveying pipe 12 and the mud pump 13 transport the filling material from the material cylinder 2 to the inside of the fixed pipe 14. The first discharge head 15 or the second discharge head 17 is selected for repair according to the state of the crack. The scraper 22 and the adjusting rod 23 are used to scrape off excess material to keep the road surface clean. The bracket 24 and the pressure roller 25 are used to compact the repaired material. The telescopic part 27 and the connecting seat 28 adjust the position of the pressure roller 25 according to the depth of the crack to ensure the compaction effect.
[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A road crack repairing device for municipal engineering comprising a vehicle frame (1), characterized in that: A material cylinder (2) is fixedly connected to the middle of the inner bottom wall of the frame (1). A guide plate (3) is fixedly connected to the inner bottom wall of the material cylinder (2). A rotating rod (4) is fixedly connected to the middle of the inner top wall of the material cylinder (2). The rotating rod (4) passes through the material cylinder (2), the guide plate (3), and the frame (1). A fixing rod (5) is fixedly connected to the middle of the outer surface of the rotating rod (4). A stirring blade (6) is fixedly connected to the outer surface of the fixing rod (5). A scraper (7) is fixedly connected to one end of the fixing rod (5). A first conical tooth (8) is fixedly connected to one end of the rotating rod (4). Rollers (9) are rotatably connected to both sides of the middle of the lower surface of the frame (1). A connecting rod (10) is fixedly connected to the middle of the inner side of the roller (9). A second conical tooth (11) is fixedly connected to the middle of the outer surface of the connecting rod (10). The second conical tooth (11) and the first conical tooth (8) are meshed together.
2. The road crack repairing device for municipal engineering according to claim 1, characterized in that: A conveying pipe (12) is fixedly connected to the bottom of the outer surface of the material cylinder (2), and a mud pump (13) is fixedly connected to one side of the outer surface of the conveying pipe (12). The mud pump (13) is fixedly connected to the frame (1).
3. The road crack repairing device for municipal engineering according to claim 2, characterized in that: One end of the conveying pipe (12) is fixedly connected to a fixed pipe (14), and one end of the fixed pipe (14) is fixedly connected to a first discharge head (15). The outer surface of the first discharge head (15) is fixedly connected to a first control valve (16).
4. The road crack repairing device for municipal engineering according to claim 3, characterized in that: The lower surface of the fixed tube (14) is fixedly connected to a second discharge head (17), and the outer surface of the second discharge head (17) is fixedly connected to a second control valve (18).
5. The road crack repairing device for municipal engineering according to claim 3, characterized in that: The upper surface of the frame (1) is fixedly connected to clamping members (19) on both sides near the fixed tube (14), and the outer surface of the clamping member (19) is threaded with a limit bolt (20).
6. The road crack repairing device for municipal engineering according to claim 1, characterized in that: A first support rod (21) is fixedly connected to the middle of the lower surface of the frame (1). A scraper (22) is rotatably connected to the outer surface of the first support rod (21). A rotating shaft (29) is rotatably connected to both sides of the outer surface of the scraper (22). An adjusting rod (23) is rotatably connected inside the rotating shaft (29). The adjusting rod (23) is threadedly connected to the frame (1).
7. A road crack repair device for municipal engineering according to claim 3, characterized in that: A bracket (24) is rotatably connected to the inner side of the frame (1) away from the fixed tube (14), and a pressure roller (25) is rotatably connected to the bottom of the inner side of the bracket (24).
8. The road crack repairing device for municipal engineering according to claim 7, characterized in that: A second support rod (26) is fixedly connected to one side of the inner side of the bracket (24). A telescopic member (27) is rotatably connected to the middle of the outer surface of the second support rod (26). A connecting seat (28) is rotatably connected to one end of the telescopic member (27). The connecting seat (28) is fixedly connected to the frame (1). The telescopic member (27) can be an electric or hydraulic structure.