Pavement repairing device for road maintenance

Abstract

The invention discloses a pavement patching device for road maintenance, and relates to the technical field of road maintenance, the pavement patching device comprises a base, the top of the base is provided with a rotary heating mechanism for preventing asphalt from being solidified, and the top of the base is also provided with a stirring mechanism for uniformly heating the asphalt; a heat preservation mechanism for slowing down asphalt solidification is further arranged outside the rotary heating mechanism, a sealing mechanism for reducing hot air overflow is arranged inside the heat preservation mechanism, the rotary heating mechanism comprises a stand column fixedly connected to the top of the base, and a storage barrel for storing asphalt is fixedly connected to the top of the stand column; the rotary heating mechanism is arranged and matched with the surrounding type fire spraying opening to dynamically and evenly heat the barrel wall, the problem that asphalt close to the barrel wall area is cooled and agglomerated due to continuous heat dissipation in a traditional static heating mode is solved, it is guaranteed that the asphalt is always kept in the temperature interval suitable for construction in the whole operation process, and the construction efficiency is improved. And the fluidity and the fitting capability with a crack interface are obviously improved.

Description

Technical Field

[0001] This invention relates to the field of highway maintenance technology, specifically to a road surface repair device for highway maintenance. Background Technology

[0002] Highway maintenance refers to the upkeep of highways during normal use and the repair of damaged parts of the highway. Because highways are subjected to wear and tear from wheels for a long time, cracks will inevitably appear, and corresponding repairs are needed at this time.

[0003] Currently, common asphalt repair equipment typically involves loading pre-prepared asphalt repair material into a storage bin and sealing the bin opening to create a relatively enclosed space, thereby reducing heat loss. The repair material is then gradually transported to the cracks in the road surface for filling.

[0004] However, as the repair work continues, the temperature of the asphalt repair material near the inner wall of the storage hopper drops due to continuous heat dissipation. This causes the material in that area to gradually cool and clump together, damaging its original working properties and flowability, making it difficult to adhere well to the cracks, and ultimately affecting the overall effect of the road repair.

[0005] Therefore, the present invention proposes a road surface repair device for highway maintenance to make up for and improve the shortcomings of the prior art. Summary of the Invention

[0006] In view of the above problems, the present invention provides a road surface repair device for highway maintenance, which can effectively solve the problem of asphalt cooling and clumping near the barrel wall in the prior art. To achieve the above objective, the embodiments of this application provide the following technical solutions: This invention discloses a road surface repair device for highway maintenance, including a base. The top of the base is provided with a rotary heating mechanism to prevent asphalt from solidifying. The top of the base is also provided with a stirring mechanism to ensure that the asphalt is heated evenly. The outside of the rotary heating mechanism is also provided with a heat preservation mechanism to slow down the solidification of asphalt. The inside of the heat preservation mechanism is provided with a sealing mechanism to reduce the leakage of hot air. The rotary heating mechanism includes a column fixedly connected to the top of the base, a storage bucket for storing asphalt fixedly connected to the top of the column, a discharge pipe fixedly connected to the middle of the column, the top of the discharge pipe communicating with the storage bucket, and the bottom of the discharge pipe extending to the bottom of the base.

[0007] Furthermore, the rotary heating mechanism also includes a rotating disk fixedly connected to the outside of the column. Vertical rods are symmetrically fixedly connected to the top of the rotating disk. A swing rod is equidistantly rotatably connected inside the cavity of each vertical rod. A flame nozzle for heating the storage barrel is fixedly connected to the end of each swing rod near the storage barrel.

[0008] Furthermore, a movable rod is vertically slidably connected inside the cavity of the vertical rod, and the movable rod is rotatably connected to the end of the swing rod away from the flame nozzle.

[0009] Furthermore, the rotary heating mechanism also includes a ring on the upper surface of the base, with notches evenly spaced at the top of the ring, and a roller fixedly connected to the bottom of the moving rod. The roller is in rolling connection with the top of the ring, and a return spring is fixedly connected to the top of the moving rod, with the return spring located inside the cavity of the vertical rod.

[0010] Furthermore, a gear ring is fixedly connected to the bottom of the rotating disk, a servo motor is fixedly connected to the upper surface of the base, and a gear is fixedly connected to the output end of the servo motor, the gear meshing with the gear ring.

[0011] Furthermore, the agitation mechanism includes a horizontal bar fixedly connected to the top of the vertical bar, a mounting rod fixedly connected to the bottom of the horizontal bar, and the mounting rod extending downward into the storage tank.

[0012] Furthermore, multiple arc-shaped levers are fixedly connected at equal intervals on the side of the mounting rod, and stirring rods are also fixedly connected at equal intervals on the side of the mounting rod.

[0013] Furthermore, the stirring rod is arranged at an inclined angle on the side of the mounting rod, and the stirring rod and the arc-shaped lever are parallel to each other.

[0014] Furthermore, the heat preservation mechanism includes a housing fixedly connected to the upper surface of the base, and the housing is located outside the storage barrel. A top cover is snapped onto the top of the housing, and an air inlet is also provided on the side of the housing.

[0015] Furthermore, the sealing mechanism includes a connecting pipe fixedly connected to the side of the air inlet, a fan fixedly connected inside the connecting pipe, an end of the connecting pipe away from the air inlet being inclined, and a cover plate for sealing the connecting pipe being rotatably connected to the inclined end of the connecting pipe via a hinge.

[0016] The beneficial effects of this invention are as follows: 1. This device is equipped with a rotary heating mechanism, which, together with the surrounding flame nozzle, dynamically and uniformly heats the barrel wall. This avoids the problem of asphalt near the barrel wall cooling down and clumping due to continuous heat dissipation, which is common in traditional static heating methods. It ensures that the asphalt is kept in a suitable temperature range for construction throughout the entire operation, significantly improving its fluidity and adhesion to crack interfaces.

[0017] 2. This device is equipped with a stirring mechanism. In addition to rotary heating, it is equipped with a crossbar, mounting rod, arc-shaped deflector, and inclined stirring mechanism. It rotates synchronously with the rotating disc and penetrates deep into the asphalt for three-dimensional stirring. The stirring rod and the arc-shaped deflector are parallel and angled, which not only promotes heat conduction from the outside to the inside, but also breaks up potential temperature difference stratification, so that the temperature field of the asphalt is evenly distributed and the asphalt is kept in a molten state, thereby ensuring the consistency and durability of the mechanical properties of the repaired road surface.

[0018] 3. This device reduces natural convection and radiation heat loss by setting up an insulation mechanism and a sealing mechanism around the storage tank. The outer shell reduces heat loss by natural convection and radiation, while the sealing mechanism actively guides the hot airflow through a fan and automatically closes the cover plate when not in the air intake state, effectively suppressing the leakage of hot air and forming a double thermal management barrier. This extends the effective working time of the asphalt, reduces the frequency of reheating or material replacement during operation, and improves the efficiency of continuous operation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 2 This is a three-dimensional structural diagram of the rotary heating mechanism of the present invention.

[0022] Figure 3 This is a front view of the rotary heating mechanism in this invention.

[0023] Figure 4 This is a longitudinal cross-sectional view of the vertical rod in this invention.

[0024] Figure 5 In this invention Figure 4 Enlarged view of the structure at point A in the middle.

[0025] Figure 6 This is a three-dimensional structural diagram of the stirring mechanism in this invention.

[0026] Figure 7 This is a longitudinal cross-sectional view of the closing mechanism in this invention.

[0027] The labels in the diagram represent: 10, base; 20, rotary heating mechanism; 201, storage bucket; 202, column; 203, rotating disk; 204, vertical rod; 205, swing rod; 206, flame nozzle; 207, moving rod; 208, roller; 209, return spring; 210, ring; 211, notch; 212, gear ring; 213, gear; 214, servo motor; 215, discharge pipe; 30, stirring mechanism; 301, crossbar; 302, mounting rod; 303, arc-shaped lever; 304, stirring rod; 40, heat preservation mechanism; 401, outer shell; 402, top cover; 403, air inlet; 50, sealing mechanism; 501, fan; 502, connecting pipe; 503, cover plate. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0029] The present invention will be further described below with reference to embodiments.

[0030] See Figures 1 to 7 This embodiment of a road surface repair device for highway maintenance includes a base 10. The top of the base 10 is provided with a rotary heating mechanism 20 to prevent asphalt from solidifying. The top of the base 10 is also provided with a stirring mechanism 30 to ensure that the asphalt is heated evenly. The outside of the rotary heating mechanism 20 is also provided with a heat preservation mechanism 40 to slow down the solidification of asphalt. The inside of the heat preservation mechanism 40 is provided with a sealing mechanism 50 to reduce the leakage of hot air.

[0031] See Figures 1 to 7 The rotary heating mechanism 20 includes a column 202 fixedly connected to the top of the base 10. A storage bucket 201 for storing asphalt is fixedly connected to the top of the column 202. A discharge pipe 215 is fixedly connected to the middle of the column 202, and the top of the discharge pipe 215 is connected to the storage bucket 201. The bottom of the discharge pipe 215 extends to the bottom of the base 10.

[0032] The rotary heating mechanism 20 also includes a rotating disk 203 fixedly connected to the outside of the column 202. Vertical rods 204 are symmetrically fixedly connected to the top of the rotating disk 203. Swing rods 205 are equidistantly rotatably connected inside the cavity of each vertical rod 204. A flame nozzle 206 for heating the storage bucket 201 is fixedly connected to one end of each swing rod 205 near the storage bucket 201.

[0033] Inside the cavity of the vertical rod 204, a movable rod 207 is also vertically slidably connected, and the movable rod 207 is rotatably connected to the end of the swing rod 205 away from the flame nozzle 206.

[0034] The rotary heating mechanism 20 also includes a ring 210 on the upper surface of the base 10. The top of the ring 210 has notches 211 at equal intervals. The bottom of the moving rod 207 is also fixedly connected to a roller 208. The roller 208 is in rolling connection with the top of the ring 210. The top of the moving rod 207 is also fixedly connected to a return spring 209, and the return spring 209 is located inside the cavity of the vertical rod 204.

[0035] A gear ring 212 is fixedly connected to the bottom of the rotating disk 203, and a servo motor 214 is fixedly connected to the upper surface of the base 10. A gear 213 is fixedly connected to the output end of the servo motor 214, and the gear 213 meshes with the gear ring 212.

[0036] In practice, hot-melt asphalt material is added to the storage container 201 through the top opening, and the top cover 402 is closed, creating a relatively enclosed space in the insulation mechanism 40 to reduce initial heat loss. The top cover 402 and the outer shell 401 form a preliminary heat insulation barrier, significantly reducing the instantaneous heat loss of the asphalt after loading due to exposure to cold air, extending the effective working window, and preventing impurities such as dust and rainwater from entering, ensuring the purity of the repair material. The servo motor 214 is powered on and started, and the output end of the servo motor 214 drives the gear 2 13 rotates, gear 213 meshes with gear ring 212, thereby driving the rotating disk 203 to rotate 360° uniformly around the column 202. A servo motor 214 and gear ring 212 drive the rotation, ensuring smooth and controllable rotation and avoiding the slippage and vibration problems of traditional belt or chain drives. The overall rotational design provides the power basis for subsequent circumferential heating and three-dimensional stirring. The vertical rod 204, flame nozzle 206, and stirring mechanism 30, fixed on the rotating disk 203, rotate synchronously. The flame nozzle 206 ignites the fuel, typically using external gas. The outer wall of the barrel 201 is heated. Because the roller 208 at the bottom of the moving rod 207 rolls along the top of the ring 210, and the ring 210 has equidistant notches 211, the return spring 209 pushes the moving rod 207 into the notch 211 when the roller 208 enters it. Therefore, the roller 208 briefly sinks when passing the notch 211. This sinking action is transmitted through the moving rod 207 to the swing rod 205, causing the swing rod 205 to swing up and down around its axis. The flame nozzle 206 then periodically sweeps up and down across the barrel wall, achieving dynamic heating. This heating method avoids localized overheating or heating blind spots in the storage container 201, and prevents the asphalt near the container wall from cooling and clumping due to continuous heat dissipation, which is a problem in traditional static heating methods. It ensures that the asphalt is maintained in the appropriate construction temperature range throughout the entire operation, significantly improving its fluidity and adhesion to crack interfaces. Compared with traditional static heating with a fixed burner head, this solution ensures that the asphalt is always in the optimal construction temperature range (140–160℃), avoiding localized cooling, clumping, or carbonization, and improving the material's fluidity and construction adaptability.

[0037] See Figures 1 to 7 The stirring mechanism 30 includes a horizontal bar 301 fixedly connected to the top of the vertical bar 204, and an installation rod 302 fixedly connected to the bottom of the horizontal bar 301, and the installation rod 302 extends downward into the storage tank 201.

[0038] Multiple arc-shaped levers 303 are fixedly connected at equal intervals on the side of the mounting rod 302, and stirring rods 304 are also fixedly connected at equal intervals on the side of the mounting rod 302.

[0039] The stirring rod 304 is arranged at an inclined angle on the side of the mounting rod 302, and the stirring rod 304 and the arc-shaped lever 303 are parallel to each other.

[0040] During operation, as the rotating disk 203 rotates, the crossbar 301 drives the mounting rod 302 to rotate inside the storage bucket 201. The inclined stirring rod 304 and the arc-shaped deflector 303 simultaneously stir the asphalt. The stirring rod 304 cuts into the deep layer of asphalt, breaking up any condensed clumps that may form. The arc-shaped deflector 303 pushes the asphalt along the bucket wall to form a circulation, promoting heat conduction from the outside to the inside. The parallel and inclined design of the two forms a composite flow field of spiraling upward and downward movement. The three-dimensional stirring not only prevents asphalt from settling and clumping, but also promotes efficient internal heat transfer, keeping the temperature deviation of the entire bucket of asphalt within the required range. This ensures consistent material performance during repair, improves the density of crack filling and the subsequent crack resistance and durability of the road surface, promotes heat conduction from the outside to the inside, and also breaks up potential temperature difference stratification, making the asphalt temperature field uniformly distributed and keeping the asphalt in a molten state. This ensures the consistency and durability of the mechanical properties of the repaired road surface.

[0041] See Figures 1 to 7 The heat preservation mechanism 40 includes a housing 401 fixedly connected to the upper surface of the base 10, and the housing 401 is located outside the storage bucket 201. A top cover 402 is snapped onto the top of the housing 401, and an air inlet 403 is also provided on the side of the housing 401.

[0042] During operation, the outer shell 401 encloses the entire storage tank 201, significantly reducing natural convection and heat radiation losses. When it is necessary to replenish combustion air or adjust the internal air pressure, the fan 501 starts. The fan 501 draws in air from the outside through the connecting pipe 502 and sends it into the insulation chamber through the air inlet 403. When not in operation or when the fan 501 stops, the cover plate 503 automatically droops around the hinge due to gravity, sealing the outlet of the connecting pipe 502 and preventing the internal hot air from escaping. The inclined design of the connecting pipe 502 helps the cover plate 503 fit tightly, improving the sealing effect. The outer shell 401 provides passive insulation, and the sealing mechanism 50 realizes active heat recovery. The two constitute a double thermal barrier, which extends the asphalt insulation time, reduces the number of times it needs to be reheated, reduces fuel consumption and carbon emissions, and improves continuous operation capability and environmental performance.

[0043] See Figures 1 to 7 The sealing mechanism 50 includes a connecting pipe 502 fixedly connected to the side of the air inlet 403. A fan 501 is fixedly connected inside the connecting pipe 502. The end of the connecting pipe 502 away from the air inlet 403 is inclined, and the inclined end of the connecting pipe 502 is rotatably connected to a cover plate 503 for sealing the connecting pipe 502 via a hinge.

[0044] During operation, while maintaining heating and stirring, the control valve of the discharge pipe 215 (not shown in the figure, but a standard configuration) is opened. The uniformly molten asphalt flows out from the bottom of the base 10 through the discharge pipe 215 under gravity or slight pressure. The operator accurately injects the flowing asphalt into road cracks or potholes to complete the repair. Throughout the process, the asphalt remains at a suitable temperature and fluidity for construction. After the operation is completed, the servo motor 214, the nozzle 206, and the fan 501 are turned off. After the equipment cools down, the top cover 402 is opened, and the residual asphalt in the storage tank 201 is cleaned to prevent solidification and blockage.

[0045] Working principle: First, the asphalt is heated by the rotary heating mechanism 20, and then stirred by the stirring mechanism 30 to ensure that the inner and outer layers of asphalt are heated evenly. During the heating process, the heat preservation mechanism 40 and the sealing mechanism 50 reduce the outward heat loss. The molten asphalt material is added to the storage tank 201 through the top opening. The servo motor 214 is powered on and started. The output end of the servo motor 214 drives the gear 213 to rotate. The gear 213 meshes with the gear ring 212, thereby driving the rotating disk 203 to rotate 360° uniformly around the column 202. The vertical rod 204, the flame nozzle 206, and the stirring mechanism are fixed on the rotating disk 203. The 30-axis synchronous rotation ignites the flame nozzle 206, typically using external gas to heat the outer wall of the storage container 201. Because the roller 208 at the bottom of the moving rod 207 rolls along the top of the ring 210, and the ring 210 has equidistant notches 211, the return spring 209 pushes the moving rod 207 into the notch 211 when the roller 208 enters it. Therefore, the roller 208 briefly sinks as it passes the notch 211. This sinking action is transmitted through the moving rod 207 to the swing rod 205, causing the swing rod 205 to swing up and down around the axis. The flame nozzle 206 then periodically sweeps up and down across the container wall, achieving dynamic heating and preventing damage to the storage container. In cases of localized overheating or heating blind spots in storage tank 201, the rotating disc 203 rotates, causing the crossbar 301 to drive the mounting rod 302 to rotate inside the storage tank 201. The inclined stirring rod 304 and the arc-shaped baffle 303 simultaneously agitate the asphalt. The stirring rod 304 penetrates deep into the asphalt, breaking up any condensed clumps that may form. The arc-shaped baffle 303 pushes the asphalt along the tank wall to form a circulation, promoting heat transfer from the outside to the inside. The outer shell 401 encloses the entire storage tank 201, significantly reducing natural convection and heat radiation losses. When it is necessary to replenish combustion air or adjust the internal air pressure, the blower 501 starts. The blower 501 draws in air from the outside through the connecting pipe 502 and through the air inlet. When 403 is fed into the insulation chamber, in non-working state or when the fan 501 is stopped, the cover plate 503 automatically droops around the hinge due to gravity, sealing the outlet of the connecting pipe 502 to prevent the internal hot air from escaping. While maintaining heating and stirring, the control valve of the discharge pipe 215 is opened, and the asphalt flows out from the bottom of the base 10 through the discharge pipe 215. The operator accurately injects the flowing asphalt into the road cracks or potholes to complete the repair. Throughout the process, the asphalt is always in a suitable temperature and fluidity state for construction. After the operation is completed, the servo motor 214, the flame nozzle 206 and the fan 501 are turned off. After the equipment cools down, the top cover 402 is opened and the residual asphalt in the storage tank 201 is cleaned.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A road surface repair device for highway maintenance, characterized in that, Includes a base (10), the top of which is provided with a rotary heating mechanism (20) to prevent asphalt from solidifying, the top of which is also provided with a stirring mechanism (30) to ensure that the asphalt is heated evenly, the outside of which is provided with a heat preservation mechanism (40) to slow down the solidification of asphalt, and the inside of which is provided with a sealing mechanism (50) to reduce the leakage of hot air. The rotary heating mechanism (20) includes a column (202) fixedly connected to the top of the base (10). A storage bucket (201) for storing asphalt is fixedly connected to the top of the column (202). A discharge pipe (215) is fixedly connected to the middle of the column (202), and the top of the discharge pipe (215) is connected to the storage bucket (201). The bottom of the discharge pipe (215) extends to the bottom of the base (10).

2. The road surface repair device for highway maintenance according to claim 1, characterized in that, The rotary heating mechanism (20) also includes a rotating disk (203) fixedly connected to the outside of the column (202). Vertical rods (204) are symmetrically fixedly connected to the top of the rotating disk (203). A swing rod (205) is equidistantly rotatably connected inside the cavity of each vertical rod (204). A flame nozzle (206) for heating the storage bucket (201) is fixedly connected to one end of each swing rod (205) near the storage bucket (201).

3. A road surface repair device for highway maintenance according to claim 2, characterized in that, Inside the cavity of the vertical rod (204), a movable rod (207) is also vertically slidably connected, and the movable rod (207) is rotatably connected to the end of the swing rod (205) away from the flame nozzle (206).

4. A road surface repair device for highway maintenance according to claim 3, characterized in that, The rotary heating mechanism (20) also includes a ring (210) on the upper surface of the base (10). The ring (210) has notches (211) at equal intervals at the top. The bottom of the moving rod (207) is also fixedly connected to a roller (208). The roller (208) is tumblingly connected to the top of the ring (210). The top of the moving rod (207) is also fixedly connected to a return spring (209), and the return spring (209) is located inside the cavity of the vertical rod (204).

5. A road surface repair device for highway maintenance according to claim 2, characterized in that, A gear ring (212) is fixedly connected to the bottom of the rotating disk (203), and a servo motor (214) is fixedly connected to the upper surface of the base (10). A gear (213) is fixedly connected to the output end of the servo motor (214), and the gear (213) meshes with the gear ring (212).

6. A road surface repair device for highway maintenance according to claim 1, characterized in that, The stirring mechanism (30) includes a horizontal bar (301) fixedly connected to the top of the vertical bar (204), and an installation rod (302) fixedly connected to the bottom of the horizontal bar (301), and the installation rod (302) extends downward into the storage tank (201).

7. A road surface repair device for highway maintenance according to claim 6, characterized in that, The mounting rod (302) has multiple arc-shaped levers (303) fixedly connected at equal intervals on its side, and the mounting rod (302) also has stirring rods (304) fixedly connected at equal intervals on its side.

8. A road surface repair device for highway maintenance according to claim 7, characterized in that, The stirring rod (304) is arranged at an inclined angle on the side of the mounting rod (302), and the stirring rod (304) and the arc-shaped lever (303) are parallel to each other.

9. A road surface repair device for highway maintenance according to claim 1, characterized in that, The heat preservation mechanism (40) includes a shell (401) fixedly connected to the upper surface of the base (10), and the shell (401) is located outside the storage bucket (201). A top cover (402) is snapped onto the top of the shell (401), and an air inlet (403) is also provided on the side of the shell (401).

10. A road surface repair device for highway maintenance according to claim 9, characterized in that, The sealing mechanism (50) includes a connecting pipe (502) fixedly connected to the side of the air inlet (403). A fan (501) is fixedly connected inside the connecting pipe (502). The end of the connecting pipe (502) away from the air inlet (403) is inclined, and the inclined end of the connecting pipe (502) is rotatably connected to a cover plate (503) for sealing the connecting pipe (502) via a hinge.

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