A heated mobile crack sealing cart

Abstract

This utility model discloses a heatable mobile crack-sealing vehicle, including a storage tank mounted on a mobile trolley. The storage tank vertically penetrates the mobile trolley and is fixedly connected to it at the contact point. The bottom of the storage tank is funnel-shaped, and a nozzle is fixedly connected to the bottom of the storage tank. An electric valve is fixedly installed on the nozzle. The vehicle provides uniform heating, improving asphalt performance. It employs a heating method combining a second heating wire on the outer wall of the storage tank and a first heating wire on the pressure plate, solving the problem of uneven temperature caused by localized heating in existing equipment. This avoids asphalt viscosity variations, sedimentation, stratification, or aging and carbonization due to temperature differences, ensuring the performance of the asphalt. Thorough mixing enhances fluidity. The synergistic action of the rotating mixing blades and the pressing plate not only achieves uniform mixing of the asphalt but also breaks up asphalt lumps, reduces viscosity, minimizes the risk of nozzle clogging, and ensures smooth asphalt discharge during crack sealing.

Description

Technical Field

[0001] This utility model relates to the field of municipal road construction technology, specifically to a heated mobile crack sealing vehicle. Background Technology

[0002] In the field of road maintenance, asphalt crack sealing is a crucial engineering step. Its main function is to fill cracks in the road surface, preventing erosion and damage to the road base layer caused by natural factors such as rainwater, snow, and vehicle loads, thereby extending the service life of the road and ensuring driving safety. Asphalt heating crack sealing trolleys are key equipment in this process, and their performance directly affects the efficiency and quality of the crack sealing operation.

[0003] Existing asphalt heating and crack sealing trolleys are typically equipped with a storage tank for storing asphalt slurry, a heating device for heating the asphalt in the storage tank, and nozzles for delivering the heated asphalt slurry to the road cracks. However, in actual operation, these devices often have many problems that need to be solved, among which uneven heating of the storage tank is a particularly prominent issue.

[0004] Currently, most asphalt heating and grouting carts use a single heat source or localized heating, such as heating pipes at the bottom of the storage tank or heating pads on the side of the tank. This heating method significantly limits heat transfer within the storage tank. Areas near the heat source heat up rapidly, while areas further away heat up slowly, sometimes even experiencing localized low temperatures. Since asphalt is a heat-sensitive material, its viscosity changes significantly with temperature. When the temperature distribution within the storage tank is uneven, the viscosity of the asphalt varies considerably between different areas. Some asphalt may maintain a high viscosity due to insufficient temperature, failing to fully blend with the asphalt in other areas. This not only affects the asphalt's fluidity but may also lead to sedimentation and stratification within the storage tank. Over time, this not only reduces the performance of the asphalt but also increases the difficulty of cleaning the storage tank and may even cause some asphalt to age and carbonize due to localized overheating, affecting the grouting quality.

[0005] Besides uneven heating, existing asphalt heating crack sealing trolleys also commonly suffer from difficulties in discharging asphalt slurry through the nozzles. Asphalt itself has high viscosity, and its fluidity decreases further, especially when temperature control is improper or heating is uneven. Existing nozzle designs are often quite simple, typically using a single straight pipe structure with a fixed nozzle diameter. When the asphalt slurry is too viscous, blockages easily occur under fixed delivery pressure, preventing the asphalt from being discharged smoothly. Even if it can be discharged, unstable flow, an insufficiently small spray range, or irregular shapes may prevent even filling of road cracks, requiring repeated operations by the operator, which not only reduces work efficiency but may also waste asphalt slurry. Furthermore, once the nozzle becomes blocked, the operator needs to stop the machine for cleaning, which not only interrupts the crack sealing process and increases labor costs but may also affect the subsequent crack sealing effect due to incomplete cleaning.

[0006] These problems severely restrict the operating efficiency and crack sealing quality of asphalt heating and sealing trolleys, increase the cost and difficulty of road maintenance, and fail to meet the demands of modern road maintenance projects for efficient and high-quality operations. Therefore, in response to the shortcomings of existing asphalt heating and sealing trolleys in terms of storage tank heating and nozzle discharge, there is an urgent need to develop a new type of equipment that can achieve uniform heating of the storage tank and ensure smooth discharge of asphalt slurry to solve the aforementioned technical problems. Utility Model Content

[0007] To address the aforementioned problems, this utility model provides a heated mobile grouting vehicle.

[0008] This utility model is achieved through the following technical solution:

[0009] A heated mobile grouting cart includes a storage tank mounted on a mobile trolley. The storage tank vertically penetrates the mobile trolley and is fixedly connected to it at the contact point. The bottom of the storage tank is funnel-shaped and a nozzle is fixedly connected to the bottom of the storage tank. An electric valve is fixedly installed on the nozzle. A feeding port is provided on one side of the top of the storage tank. A drive structure is provided at the top of the storage tank. The drive structure includes a first mounting plate. A cylinder is vertically inserted through the axis of the first mounting plate. The cylinder is rotatably connected to the first mounting plate at the contact point via a bearing. The bottom of the cylinder extends into the storage tank and is fixedly fitted with a stirring structure. A moving structure for moving the drive structure up and down is installed at the top of the storage tank. A storage battery is fixedly installed on the mobile trolley.

[0010] Preferably, the drive structure further includes a first gear fixedly sleeved at the upper end of the cylinder and an n-shaped mounting plate fixedly mounted on the first mounting plate. A first motor is fixedly mounted on the top of the n-shaped mounting plate. The output shaft of the first motor penetrates the n-shaped mounting plate and is fixedly attached to a second gear. The second gear meshes with the first gear. Two limiting rings are fixedly sleeved on the cylinder. The two limiting rings are respectively fitted to the top and bottom surfaces of the first mounting plate. A slip ring for electrical connection is also sleeved on the cylinder. The cylinder is rotatably connected to the slip ring. The slip ring is fixedly connected to the bottom surface of the first mounting plate through a connecting block. The slip ring is electrically connected to the battery through a wire.

[0011] Preferably, the stirring structure includes a gearbox fixed to the bottom of the cylinder and a second mounting plate fixed to the top of the cylinder. The gearbox is connected to the cylinder and is cylindrical. Stirring blades are symmetrically fixed on both sides of the gearbox, and the stirring blades are parallel to the horizontal plane. Two rotating shafts are respectively attached to one side of each of the two stirring blades rotating clockwise along the cylinder axis. The opposite ends of the two rotating shafts penetrate the gearbox and extend into it, where a third gear is fixed. The rotating shafts are rotatably sealed at their contact points with the gearbox. The other ends of the two rotating shafts are rotatably connected to bushings via bearings. The bushings are fixed to the sidewalls of the stirring blades. Each gear is fixed with a pressure plate, which is initially parallel to the stirring blade. Two third gears are meshed with racks on opposite sides. The top of each rack is fixed with the same sliding disc. Two first guide rods are vertically inserted through the sliding disc. The sliding disc is slidably connected to the first guide rods. The top and bottom of the first guide rods are fixedly connected to the top and bottom of the gearbox, respectively. A connecting rod is fixed to the top of the sliding disc. The top of the connecting rod extends into the cylinder. An electric telescopic rod is fixedly installed on the top surface of the second mounting plate. The telescopic end of the electric telescopic rod penetrates the second mounting plate and extends into the cylinder, where it is fixedly connected to the top of the connecting rod. The electric telescopic rod is electrically connected to a slip ring via a wire.

[0012] Preferably, the movable structure includes an L-shaped plate fixed to the top surface of the storage tank. A second motor is fixedly installed on the top surface of the horizontal plate of the L-shaped plate. The output shaft of the second motor penetrates the horizontal plate of the L-shaped plate and is fixed with a lead screw. The bottom end of the lead screw is rotatably connected to the top surface of the storage tank through a bearing. A lead screw nut is fitted on the lead screw and is threadedly connected to the lead screw. The lead screw nut passes through the first mounting plate and is fixedly connected to it at the contact point. Two second guide rods are symmetrically fixed between the bottom surface of the horizontal plate of the L-shaped plate and the top surface of the storage tank. A guide cylinder is slidably fitted on the second guide rod. The guide cylinder passes through the first mounting plate and is fixedly connected to it at the contact point.

[0013] Preferably, a first heating wire is fixed on the top surface of the pressure plate, and the first heating wire is electrically connected to the slip ring through a wire.

[0014] Preferably, the second motor and the first motor are electrically connected to the battery via wires.

[0015] Preferably, a cover is fixedly fitted on the outside of the storage tank, and a plurality of second heating wires are provided inside the cover. The plurality of second heating wires are evenly fixed on the outer wall of the storage tank, and the second heating wires are electrically connected to the battery through wires.

[0016] Compared with existing technologies, the beneficial effects of this utility model are:

[0017] 1. Uniform heating improves asphalt performance: The heating method combines the second heating wire on the outer wall of the storage tank with the first heating wire on the pressure plate, which solves the problem of uneven temperature caused by local heating in existing equipment. This avoids uneven viscosity, sedimentation and stratification, or aging and carbonization of asphalt due to temperature differences, thus ensuring the performance of asphalt.

[0018] 2. Thorough mixing enhances fluidity: The combined action of the rotating mixing blades and the pressing plate not only achieves uniform mixing of asphalt, but also breaks up asphalt lumps, reduces viscosity, minimizes the risk of nozzle clogging, and ensures smooth asphalt discharge during grouting.

[0019] 3. Flexible adjustment to adapt to different working conditions: The movable structure allows for adjustment of the height of the mixing components to meet the mixing requirements of different asphalt volumes in the storage tank; the movable trolley facilitates flexible movement of the equipment at the road maintenance site, improving operational convenience.

[0020] 4. Automated control improves work efficiency: Electric valves control discharge, motors drive stirring and position adjustment, reducing manual intervention, lowering the difficulty of operation, avoiding downtime for cleaning due to nozzle blockage, and improving the efficiency and quality of crack sealing operations. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure described in this utility model;

[0022] Figure 2 This is a cross-sectional view of the structure described in this utility model;

[0023] Figure 3 This is a partial structural diagram of the structure described in this utility model. Figure 1 ;

[0024] Figure 4 The structure described in this utility model Figure 3 Enlarged diagram of the middle section Figure 1 ;

[0025] Figure 5 The structure described in this utility model Figure 3 Enlarged diagram of the middle section Figure 2 ;

[0026] Figure 6 The structure described in this utility model Figure 3 Enlarged diagram of the middle section Figure 3 ;

[0027] Figure 7 This is a partial structural diagram of the structure described in this utility model. Figure 2 ;

[0028] Figure 8 The structure described in this utility model Figure 7 Enlarged diagram of the middle section Figure 1 ;

[0029] Figure 9 The structure described in this utility model Figure 7 Enlarged diagram of the middle section Figure 2 .

[0030] In the diagram: 1. Storage tank; 2. Movable trolley; 3. Nozzle; 4. Electric valve; 5. Feed port; 6. Drive structure; 7. First mounting plate; 8. Cylinder; 9. Stirring structure; 10. Moving structure; 11. First gear; 12. N-shaped mounting plate; 13. First motor; 14. Second gear; 15. Limiting ring; 16. Slip ring; 17. Gearbox; 18. Second mounting plate; 19. Stirring blade; 20. Rotating shaft; 21. Third gear; 22. Bushing; 23. Pressure plate; 24. Rack; 25. Sliding disc; 26. First guide rod; 27. Connecting rod; 28. Electric telescopic rod; 29. ​​L-shaped plate; 30. Second motor; 31. Lead screw; 32. Lead screw nut; 33. Second guide rod; 34. Guide cylinder; 35. First heating wire; 36. Battery; 37. Cover; 38. Second heating wire. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9As shown, a heated mobile grouting cart includes a storage tank 1, which is mounted on a mobile trolley 2. The storage tank 1 vertically penetrates the mobile trolley 2 and is fixedly connected to it at the contact point. The bottom of the storage tank 1 is funnel-shaped, and a nozzle 3 is fixedly connected to the bottom of the storage tank 1. An electric valve 4 is fixedly mounted on the nozzle 3. A feeding port 5 is provided on one side of the top of the storage tank 1. A drive structure 6 is provided at the upper end of the storage tank 1. The drive structure 6 includes a first mounting plate 7. A cylinder 8 is vertically inserted through the axis of the first mounting plate 7. The cylinder 8 is rotatably connected to the first mounting plate 7 at the contact point through a bearing. The bottom end of the cylinder 8 extends into the storage tank 1 and is fixedly fitted with a stirring structure 9. A moving structure 10 for moving the drive structure 6 up and down is installed at the top of the storage tank 1. A storage battery 36 is fixedly installed on the mobile trolley 2.

[0033] The drive structure 6 also includes a first gear 11 fixedly sleeved on the upper end of the cylinder 8 and an n-shaped mounting plate 12 fixed on the first mounting plate 7. A first motor 13 is fixedly mounted on the top of the n-shaped mounting plate 12. The output shaft of the first motor 13 penetrates the n-shaped mounting plate 12 and is fixedly attached to a second gear 14. The second gear 14 meshes with the first gear 11. Two limiting rings 15 are fixedly sleeved on the cylinder 8. The two limiting rings 15 are respectively attached to the top and bottom surfaces of the first mounting plate 7. A slip ring 16 for electrical connection is also sleeved on the cylinder 8. The cylinder 8 is rotatably connected to the slip ring 16. The slip ring 16 is fixedly connected to the bottom surface of the first mounting plate 7 through a connecting block. The slip ring 16 is electrically connected to the battery 36 through a wire.

[0034] The stirring structure 9 includes a gearbox 17 fixed to the bottom of the cylinder 8 and a second mounting plate 18 fixed to the top of the cylinder 8. The gearbox 17 is connected to the cylinder 8 and is cylindrical. Stirring blades 19 are symmetrically fixed on both sides of the gearbox 17. The stirring blades 19 are parallel to the horizontal plane. A rotating shaft 20 is attached to one side of each of the two stirring blades 19 as they rotate clockwise around the axis of the cylinder 8. One end of each of the two rotating shafts 20 penetrates the gearbox 17 and extends into it, where a third gear 21 is fixed. The rotating shafts 20 and gearbox 17 are sealed and rotatably connected at their contact points. The other ends of the two rotating shafts 20 are rotatably connected to bushings 22 via bearings. The bushings 22 are fixed to the sidewalls of the stirring blades 19. A pressure plate 23 is fixedly arranged. In the initial state, the pressure plate 23 is parallel to the stirring blade 19. Two third gears 21 are meshed with racks 24 on opposite sides. The top of the two racks 24 is fixed with the same sliding disk 25. Two first guide rods 26 are vertically inserted through the sliding disk 25. The sliding disk 25 is slidably connected to the first guide rods 26. The top and bottom of the first guide rods 26 are fixedly connected to the top and bottom of the gearbox 17, respectively. A connecting rod 27 is fixedly fixed to the top of the sliding disk 25. The top of the connecting rod 27 extends into the cylinder 8. An electric telescopic rod 28 is fixedly installed on the top surface of the second mounting plate 18. The telescopic end of the electric telescopic rod 28 penetrates the second mounting plate 18 and extends into the cylinder 8, and is fixedly connected to the top of the connecting rod 27. The electric telescopic rod 28 is electrically connected to the slip ring 16 through a wire.

[0035] The movable structure 10 includes an L-shaped plate 29 fixed to the top surface of the storage tank 1. A second motor 30 is fixedly installed on the top surface of the horizontal plate of the L-shaped plate 29. The output shaft of the second motor 30 penetrates the horizontal plate of the L-shaped plate 29 and is fixed with a lead screw 31. The bottom end of the lead screw 31 is rotatably connected to the top surface of the storage tank 1 through a bearing. A lead screw nut 32 is fitted on the lead screw 31 and is threadedly connected to the lead screw 31. The lead screw nut 32 passes through the first mounting plate 7 and is fixedly connected to it at the contact point. Two second guide rods 33 are symmetrically fixed between the bottom surface of the horizontal plate of the L-shaped plate 29 and the top surface of the storage tank 1. A guide cylinder 34 is slidably fitted on the second guide rod 33 and passes through the first mounting plate 7 and is fixedly connected to it at the contact point.

[0036] The top surface of the pressure plate 23 is fixed with a first heating wire 35, which is electrically connected to the slip ring 16 via a wire.

[0037] The second motor 30 and the first motor 13 are electrically connected to the storage battery 36 via wires.

[0038] The storage tank 1 is fixedly covered with a cover 37. The cover 37 is provided with a plurality of second heating wires 38. The plurality of second heating wires 38 are evenly fixed on the outer wall of the storage tank 1. The second heating wires 38 are electrically connected to the battery 36 through wires.

[0039] Working principle;

[0040] In use, the storage battery 36 provides power to the device. The first motor 13 in the drive structure 6 drives the cylinder 8 to rotate through gear meshing (the second gear 14 and the first gear 11). The stirring structure 9 at the bottom of the cylinder 8 rotates synchronously with it. During the rotation, the stirring blade 19 performs basic stirring of the asphalt in the storage tank 1. At the same time, the electric telescopic rod 28 drives the connecting rod 27 to move the sliding disc 25 up and down along the first guide rod 26. The rack 24 connected to the sliding disc 25 meshes with the third gear 21, causing the rotating shaft 20 and the pressure plate 23 to rotate (initially parallel to the stirring blade 19, and after rotation, it can press the asphalt), realizing the coordinated action of stirring and pressing, enhancing the asphalt mixing and extrusion effect. The extrusion effect allows the asphalt to be smoothly discharged from the nozzle 3.

[0041] The second heating wire 38 on the outer wall of the storage tank 1 is insulated by the cover 37, which heats the storage tank 1 evenly. The first heating wire 35 on the pressure plate 23 in the stirring structure 9 moves synchronously with the pressure plate 23 to provide local auxiliary heating for the asphalt. The combination of internal and external heating ensures that the asphalt is heated evenly.

[0042] The second motor 30 in the moving structure 10 drives the lead screw 31 to rotate, and the lead screw nut 32 drives the first mounting plate 7 and the entire drive structure 10 and the mixing structure 9 to move up and down along the second guide rod 33. The mixing position can be adjusted according to the amount of asphalt in the storage tank to improve the mixing efficiency.

[0043] The storage tank 1 has a funnel-shaped design at the bottom and a nozzle 3 with an electric valve 4. By controlling the opening and closing of the electric valve 4, the heated and mixed asphalt is accurately discharged into the road cracks to complete the crack sealing operation.

[0044] 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 claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A heated mobile grouting cart, characterized in that; The system includes a storage tank (1), which is mounted on a movable trolley (2). The storage tank (1) penetrates the movable trolley (2) vertically and is fixedly connected to it at the contact point. The bottom of the storage tank (1) is funnel-shaped and a nozzle (3) is fixedly connected to the bottom of the storage tank (1). An electric valve (4) is fixedly provided on the nozzle (3). A feeding port (5) is provided on one side of the top of the storage tank (1). A drive structure (6) is provided at the top of the storage tank (1). The drive structure (6) includes a first mounting plate (7). A cylinder (8) is vertically inserted through the axis of the first mounting plate (7). The cylinder (8) is rotatably connected to the first mounting plate (7) at the contact point through a bearing. The bottom of the cylinder (8) extends into the storage tank (1) and is fixedly provided with a stirring structure (9). A moving structure (10) for moving the drive structure (6) up and down is installed at the top of the storage tank (1). A battery (36) is fixedly installed on the movable trolley (2).

2. The heated mobile grouting cart according to claim 1, characterized in that: The drive structure (6) also includes a first gear (11) fixedly sleeved on the upper end of the cylinder (8) and an n-shaped mounting plate (12) fixed on the first mounting plate (7). A first motor (13) is fixedly installed on the top of the n-shaped mounting plate (12). The output shaft of the first motor (13) penetrates the n-shaped mounting plate (12) and is fixedly fitted with a second gear (14). The second gear (14) meshes with the first gear (11). Two limiting rings (15) are fixedly sleeved on the cylinder (8). The two limiting rings (15) are respectively fitted to the top and bottom surfaces of the first mounting plate (7). A slip ring (16) for electrical connection is also sleeved on the cylinder (8). The cylinder (8) is rotatably connected to the slip ring (16). The slip ring (16) is fixedly connected to the bottom surface of the first mounting plate (7) through a connecting block. The slip ring (16) is electrically connected to the battery (36) through a wire.

3. The heated mobile grouting cart according to claim 2, characterized in that: The stirring structure (9) includes a gearbox (17) fixed to the bottom of the cylinder (8) and a second mounting plate (18) fixed to the top of the cylinder (8). The gearbox (17) is connected to the cylinder (8) and is cylindrical. Stirring blades (19) are symmetrically fixed on both sides of the gearbox (17). The stirring blades (19) are parallel to the horizontal plane. The two stirring blades (19) rotate clockwise along the axis of the cylinder (8) and fit together on one side. There are two rotating shafts (20), one end of which penetrates the gearbox (17) and extends into the gearbox (17) to fix a third gear (21). The rotating shafts (20) are sealed and rotatably connected to the gearbox (17) at the contact point. The other ends of the two rotating shafts (20) are rotatably connected to bushings (22) through bearings. The bushings (22) are fixed on the side wall of the stirring blade (19). The rotating shafts (20) rotate clockwise along the axis of the cylinder (8) to each side. A pressure plate (23) is fixed. In the initial state, the pressure plate (23) is parallel to the stirring blade (19). Two third gears (21) are meshed with racks (24) on opposite sides. The top of the two racks (24) is fixed with the same sliding disk (25). Two first guide rods (26) are vertically inserted through the sliding disk (25). The sliding disk (25) is slidably connected to the first guide rods (26). The top and bottom of the first guide rods (26) are fixedly connected to the top and bottom of the gearbox (17) respectively. A connecting rod (27) is fixedly attached to the top of the sliding disk (25). The top of the connecting rod (27) extends into the cylinder (8). An electric telescopic rod (28) is fixedly installed on the top surface of the second mounting plate (18). The telescopic end of the electric telescopic rod (28) penetrates the second mounting plate (18) and extends into the cylinder (8) and is fixedly connected to the top of the connecting rod (27). The electric telescopic rod (28) is electrically connected to the slip ring (16) through a wire.

4. The heated mobile grouting cart according to claim 3, characterized in that: The movable structure (10) includes an L-shaped plate (29) fixed on the top surface of the storage tank (1). A second motor (30) is fixedly installed on the top surface of the horizontal plate of the L-shaped plate (29). The output shaft of the second motor (30) penetrates the horizontal plate of the L-shaped plate (29) and is fixed with a lead screw (31). The bottom end of the lead screw (31) is rotatably connected to the top surface of the storage tank (1) through a bearing. A lead screw nut (32) is fitted on the lead screw (31). The lead screw nut (32) is threadedly connected to the lead screw (31). The lead screw nut (32) passes through the first mounting plate (7) and is fixedly connected to it at the contact point. Two second guide rods (33) are symmetrically fixed between the bottom surface of the horizontal plate of the L-shaped plate (29) and the top surface of the storage tank (1). A guide cylinder (34) is slidably fitted on the second guide rod (33). The guide cylinder (34) passes through the first mounting plate (7) and is fixedly connected to it at the contact point.

5. A heated mobile grouting cart according to claim 3, characterized in that; The top surface of the pressure plate (23) is fixed with a first heating wire (35), which is electrically connected to the slip ring (16) through a wire.

6. A heated mobile grouting cart according to claim 4, characterized in that; The second motor (30) and the first motor (13) are electrically connected to the storage battery (36) via wires.

7. A heated mobile grouting cart according to claim 1, characterized in that; The storage tank (1) is fixedly covered with a cover (37), and a plurality of second heating wires (38) are provided inside the cover (37). The plurality of second heating wires (38) are evenly fixed on the outer wall of the storage tank (1), and the second heating wires (38) are electrically connected to the battery (36) through wires.

Images