Portable asphalt pavement crack repairing and reinforcing device and repairing method thereof

Abstract

This invention relates to the technical field of asphalt pavement crack repair and reinforcement devices, and particularly to a portable asphalt pavement crack repair and reinforcement device, which includes a hopper, an isolation working chamber, an air intake component, an air jet component, and a spraying component. The bottom of the hopper is equipped with an isolation working chamber, which contains an air filter chamber. The two ends of the air filter chamber are connected to the air intake component and the air jet component, respectively. The outlet of the hopper is connected to the spraying component via a return pump located inside the isolation working chamber. The hopper is equipped with an injection port. This invention also provides a repair method in which the air jet component sprays clean gas, and the air intake component draws in the blown-away dirty dust gas, forming a circulation. This avoids dust flying around during dust removal, protecting the operator's health. After cleaning the asphalt cracks, the spraying component injects a crack-filling solution to fill the asphalt cracks. Both processes are performed simultaneously without interference, simplifying the repair steps and effectively improving the efficiency of asphalt crack repair.

Description

Technical Field

[0001] This invention relates to the field of asphalt pavement crack repair and reinforcement devices, and in particular to a portable asphalt pavement crack repair and reinforcement device and its repair method. Background Technology

[0002] Within the design service life of asphalt concrete pavements, under conditions of repeated compaction under cyclic loading, temperature changes, and base layer shrinkage, cracks of varying sizes inevitably develop on the surface asphalt layer, including transverse cracks, longitudinal cracks, and network cracks. Asphalt cracks are classified into two types based on their causes: load-induced cracks and non-load-induced cracks. Non-load-induced cracks are further divided into asphalt surface layer shrinkage cracks and base layer reflective cracks. Load-induced cracks are caused by tensile stress exceeding the material's fatigue strength and develop from bottom to top. Asphalt surface layer shrinkage cracks are caused by stress generated by asphalt material shrinkage in winter exceeding the material's strength. Base layer reflective cracks are caused by base layer shrinkage cracks extending into the asphalt surface layer. This includes composite asphalt pavement structures formed by overlaying asphalt onto old cement concrete pavement slabs; stress concentration easily occurs at cement concrete joints and cracks, making the asphalt surface layer highly susceptible to reflective cracking.

[0003] Currently, grouting is commonly used to repair asphalt pavement cracks. First, a dust removal machine is used to blow away dust and impurities from the cracks. Then, a crack-filling solution, such as asphalt waterproof coating, polyurethane waterproof coating, silicone cold-filling sealant, high-strength polyurethane resin sealant, hot asphalt sealant, or emulsified asphalt solution, is injected into the asphalt crack, embedding itself into the crack and curing to repair it. Traditional asphalt crack repair equipment is mostly tank-based. The crack-filling solution is injected into the crack through a tank-feeding device. Because the tanks are heavy and difficult to move during operation, they are usually placed on a trolley or tricycle, requiring a skilled operator. Moving the trolley while aiming the nozzle extending from the tank at the asphalt cracks is inflexible, complex, and cumbersome. It makes it difficult to guarantee the quality of the filling, involves a large work area, and results in low efficiency. Furthermore, before applying the filling solution, a dust removal machine is needed to clean the dust and impurities from the asphalt cracks to prevent the formation of a barrier between the dust and the filling solution, which would affect the bonding strength and stability. This cumbersome process causes considerable inconvenience to the operator. Moreover, the dust blown away by the dust removal machine diffuses in the air, polluting the environment and posing a health hazard to the operator through respiration. Patent application number 202410791791.8 discloses a rapid repair device and method for asphalt pavement cracks, which uses the aforementioned technique of placing the material cylinder on a trolley. However, the material cylinder is heavy, inconvenient to move during construction, and cannot remove dust from the crack surface. Summary of the Invention

[0004] To address the aforementioned technical problems in the existing technology, the present invention provides a portable asphalt pavement crack repair and reinforcement device and its repair method.

[0005] To achieve the above objectives, the present invention proposes a portable asphalt pavement crack repair and reinforcement device, comprising: a material hopper, an isolation working chamber, an air intake component, an air jet component, and a spraying component; the isolation working chamber is located at the bottom of the material hopper, and an air filter chamber is provided inside the isolation working chamber. The two ends of the air filter chamber are respectively connected to the air intake component and the air jet component. The material outlet of the material hopper is connected to the spraying component through a return material pump, which is located inside the isolation working chamber. The material hopper is provided with a material injection port. Gas is ejected through the jetting component, blowing away dust and impurities from the asphalt cracks. The blown-away dust and impurities are then drawn into the air filtration chamber through the suction component, and the filtered clean gas is then ejected through the jetting component. In this way, the jetting component ejects clean gas, and the suction component draws in the blown-away dirty gas, forming a circulating gas system. This not only cleans the dust but also prevents dust from flying around in the air, thus avoiding the health hazards and discomfort caused to workers. The process of cleaning dust from the asphalt cracks in the front and injecting grouting solution to fill the cracks in the rear is carried out simultaneously and intermittently, without interfering with each other. This simplifies the asphalt crack repair process, makes the technology simpler, more flexible in operation, and easier to move, effectively improving the efficiency of asphalt crack repair.

[0006] As an optional implementation, in the portable asphalt pavement crack repair and reinforcement device provided by this invention, the air intake assembly includes an inner air intake tube, an air intake hose, and an air intake rod. One end of the inner air intake tube is connected to one end of the air filter chamber via an air intake check valve, and the other end of the inner air intake tube extends outside the isolation working chamber and connects to the air intake hose. The air intake hose is connected to the air intake rod. The air intake check valve prevents backflow of air and damage to the gas pipeline.

[0007] As an optional implementation, in the portable asphalt pavement crack repair and reinforcement device provided by this invention, the end of the suction rod is provided with a suction hood, and a buckle is detachably installed on the side wall of the suction rod above the suction hood. Two guide wheels are symmetrically arranged on the buckle. The wheel spacing can be adjusted according to the crack width and road conditions to provide support and guidance for the stainless steel rod of the pipeline, reducing the weight of the operator's right hand holding the handle of the pipeline rod, making crack repair easier and more convenient.

[0008] As an optional implementation, in the portable asphalt pavement crack repair and reinforcement device provided by this invention, the jet assembly includes an inner jet pipe, a jet hose, and a jet core rod. One end of the inner jet pipe is connected to the other end of the air filter chamber via a jet check valve. The other end of the inner jet pipe extends outside the isolation working chamber and connects to the jet hose. The jet hose is connected to the jet core rod, which is embedded in the suction rod. A jet nozzle is detachably provided at the end of the jet core rod, and the jet nozzle retracts into the suction hood. The jet check valve prevents backflow of airflow, thus preventing damage to the gas pipeline. The jet nozzle is detachably installed at the end of the jet core rod. The jet nozzle can adjust the airflow range. For example, the fan-shaped jet nozzle allows the width of the airflow sprayed by the jet core rod to be adjusted and controlled, which is suitable for cleaning dust from asphalt cracks of different widths. The narrower the airflow range of the jet nozzle, the greater the airflow impact force, thereby adjusting the jet intensity and effectively removing dust and impurities from the asphalt cracks. The jet nozzle is retracted inside the suction hood, avoiding direct contact between the jet nozzle and the asphalt surface to prevent nozzle wear, which helps to extend the service life and maintenance of the jet nozzle.

[0009] As an optional implementation, in the portable asphalt pavement crack repair and reinforcement device provided by the present invention, the air filtration chamber is equipped with a fan and a filter residue collection drawer; the fan is located at one end near the air jet check valve, and the filter residue collection drawer is pull-out at one end near the air intake check valve. The filter residue collection drawer is equipped with a pull-out ring, and a large-pore air filter, a medium-pore air filter, and a micro-pore air filter are sequentially arranged in the inner cavity of the filter residue collection drawer along the direction away from the air intake check valve; the large-pore air filter, the medium-pore air filter, and the micro-pore air filter are detachable. The right side of the filter residue collection drawer is tightly fitted to the inner intake pipe via the air intake check valve, and the left side wall of the filter residue collection drawer is close to the fan. The large-pore air filter, the medium-pore air filter, and the micro-pore air filter are sequentially embedded in the filter residue collection drawer from the right side wall to the left side wall of the inner cavity, filtering large-diameter dust, medium-diameter dust, and micro-diameter dust in the gas in sequence. The filter residue collection drawer can be pulled out from the air filtration chamber for convenient collection of filter residue and replacement and cleaning of the filter screens.

[0010] As an optional implementation, in the portable asphalt pavement crack repair and reinforcement device provided by the present invention, the spraying assembly includes a spraying hose and a spraying rod. One end of the spraying hose is connected to the return material pump, and the other end of the spraying hose is connected to the spraying rod. A nozzle is provided at the end of the spraying rod, and a smoothing baffle is provided on the spraying rod near the nozzle. By setting the smoothing baffle on the side wall of the spraying rod near the nozzle, as the spraying rod moves, the crack-filling solution is gradually injected into the asphalt cracks, while the crack-filling solution remaining on the road surface is smoothed by the smoothing baffle. This prevents the crack-filling solution remaining on the road surface from solidifying and forming bumps that could endanger driving safety, comfort, and smoothness, reducing traffic safety hazards. Automatic smoothing eliminates the need for manual scraper operation, saving manpower and improving work efficiency.

[0011] As an optional implementation, in the portable asphalt pavement crack repair and reinforcement device provided by the present invention, the spraying rod is equipped with a speed-regulating handle power switch electrically connected to the return material pump. The speed-regulating handle power switch is used to control the return material pump, thereby controlling the discharge speed of the crack-sealing solution from the hopper.

[0012] As an optional implementation, in the portable asphalt pavement crack repair and reinforcement device provided by the present invention, the isolation working chamber is further provided with an electrical control room and a discharge chamber; the electrical control room and the discharge chamber are located on both sides of the air filter chamber, and the discharge chamber is provided with the return material pump.

[0013] As an optional implementation, in the portable asphalt pavement crack repair and reinforcement device provided by this invention, a power supply is provided in the electrical control room, and an electrical control panel is provided on the side wall of the electrical control room. The electrical control panel contains a fan power switch and a fan speed control switch, and also has a waterproof power socket connected to the power supply. By charging the power supply in the electrical control room, the electrical connection to the fan and the return material pump is achieved, improving work efficiency. By setting the fan power switch, the fan speed is controlled by the fan speed control switch. The isolation working chamber is provided with channels or holes for laying electrical wires. The wires connected to the push-button switch are adhered to the pipeline and extend to the electrical control room of the isolation working chamber, avoiding a scattered distribution of power supply lines.

[0014] As an optional implementation, in the portable asphalt pavement crack repair and reinforcement device provided by the present invention, the portable asphalt pavement crack repair and reinforcement device further includes a buckle for binding and connecting the air intake component, the air jet component, and the spraying component. The buckle facilitates the binding of the air intake component, the air jet component, and the spraying component together, making it convenient for the operator to hold the handle while working.

[0015] Furthermore, the present invention also provides a repair method based on any of the portable asphalt pavement crack repair and reinforcement devices described above, comprising the following steps:

[0016] S1: Aim the jet assembly at the asphalt crack. The polluted gas enters the air filter chamber through the air intake assembly. After being filtered, the polluted gas is sprayed out through the jet assembly, blowing away the dust in the asphalt crack. The blown-out dust gas is sucked in by the air intake assembly, thus forming a circulating airflow to clean the asphalt crack.

[0017] S2: Start the return pump. The return pump delivers the crack filling solution from the lowest point of the bottom wall of the hopper along the spraying assembly and injects it into the asphalt cracks, thus beginning the repair of the asphalt cracks.

[0018] Compared with the prior art, the beneficial effects of the technical solution of the present invention are as follows:

[0019] I. The portable asphalt pavement crack repair and reinforcement device provided by this invention comprises a hopper, an isolation working chamber, an air intake component, an air jet component, and a spraying component. The bottom of the hopper is equipped with an isolation working chamber, which contains an air filter chamber. The two ends of the air filter chamber are connected to the air intake component and the air jet component, respectively. The outlet of the hopper is connected to the spraying component via a return material pump, which is located inside the isolation working chamber. Gas is ejected through the air jet component to blow away dust and impurities from the asphalt cracks. The blown-away dust and impurities then pass through the air intake component and are filtered to draw the gas into the air filter chamber. The filtered clean gas is then sprayed out by the jet assembly. In this way, the jet assembly sprays out clean gas, and the suction assembly sucks in the blown-away dirty dust gas, forming a circulating gas. While completing the dust removal, it prevents dust from flying around in the air and avoids workers inhaling dust, which may harm their health and cause discomfort. The front part cleans the dust from the asphalt cracks, and the rear part sprays the filling solution to fill the asphalt cracks. The two are carried out simultaneously and at intervals, without interfering with each other. This simplifies the asphalt crack repair process, makes the process simpler, more flexible to operate, and easy to move, effectively improving the efficiency of asphalt crack repair.

[0020] II. The isolation work chamber is equipped with an air filtration chamber containing a fan. One side of the air filtration chamber is connected to an inner air pipe, an inner air hose, and an inner air core rod via an air jet check valve. The other side of the air filtration chamber is connected to an inner air pipe, an inner air hose, and an inner air intake rod via an inner air intake check valve. The inner air intake rod is embedded in the inner air intake rod. The air filtration chamber is equipped with a filter residue collection drawer. The inner cavity of the filter residue collection drawer, from the side away from the inner air intake check valve, contains a large-pore air filter, a medium-pore air filter, and a micro-pore air filter in sequence. When the fan is turned on, air is ejected from the air jet nozzle at the end of the inner air jet rod, blowing away the dust in the asphalt cracks. The blown-away dust is covered by the suction hood and sucked into the inner air intake rod. The air enters the air filtration chamber through the suction rod, suction hose, and suction inner tube via the suction check valve. The air passes through the large-pore air filter, medium-pore air filter, and micro-pore air filter in sequence, filtering out large-diameter dust, medium-diameter dust, and micro-diameter dust. The filtered, clean air, free of impurities, then passes through the jet check valve and through the jet inner tube, jet hose, and jet core rod before being ejected from the jet nozzle. This process repeats, with the jet nozzle ejecting clean air and the suction hood drawing in the blown-away dusty air, creating a circulating airflow. This process not only cleans the dust from the asphalt cracks but also prevents dust from flying around in the air and polluting the environment, and also prevents workers from inhaling dust and causing discomfort or harm to their health.

[0021] Third, this invention features a smoothing baffle fixed to the side wall of the spray bar near the nozzle. As the spray bar moves, the crack filling solution is gradually injected into the asphalt cracks, while the crack filling solution remaining on the road surface is smoothed by the smoothing baffle. This prevents the crack filling solution remaining on the road surface from solidifying and forming bumps that could endanger driving safety, comfort, and smoothness, thereby reducing traffic safety hazards. The automatic smoothing eliminates the need for manual scraping, saving manpower and improving work efficiency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 Structural diagram of the portable asphalt pavement crack repair and reinforcement device provided by the present invention;

[0024] Figure 2 for Figure 1 Schematic diagram of the middle suction bar and the spray bar;

[0025] Figure 3 Cross-sectional view of the portable asphalt pavement crack repair and reinforcement device provided by the present invention;

[0026] Figure 4 This is a schematic diagram of the AA cross section of the present invention;

[0027] Figure 5 This is a schematic diagram of the BB cross-section of the present invention;

[0028] Figure 6 for Figure 1 A magnified view of point C in the diagram;

[0029] Figure 7 for Figure 2 A cross-sectional view;

[0030] Figure 8 for Figure 7 A magnified view of a portion of point D in the diagram;

[0031] Figure 9 for Figure 7 A magnified view of point E in the diagram;

[0032] Figure 10 This is a schematic diagram of the filter residue collection drawer of the present invention;

[0033] Figure 11 This is a schematic diagram of the fan of the present invention;

[0034] Figure 12 This is a schematic diagram of the electronic control panel of the present invention.

[0035] [Explanation of Labels in the Attached Image]

[0036] 1. Hopper; 11. Inlet; 12. Sealing cap; 13. Handle;

[0037] 2. Isolation work pod;

[0038] 21. Air filtration chamber; 211. Fan; 212. Filter residue collection drawer; 213. Pull-out ring; 214. Large-pore air filter; 215. Medium-pore air filter; 216. Micropore air filter;

[0039] 22. Electrical control room; 221. Power supply; 222. Electrical control panel; 223. Fan power switch; 224. Fan speed control switch; 225. Waterproof power socket;

[0040] 23. Discharge chamber; 231. Return pump;

[0041] 3. Suction assembly; 31. Inner suction tube; 32. Suction hose; 33. Suction rod; 34. Suction check valve; 35. Suction hood; 36. Guide wheel;

[0042] 4. Jet assembly; 41. Jet inner tube; 42. Jet hose; 43. Jet core rod; 44. Jet check valve; 45. Jet nozzle;

[0043] 5. Spraying assembly; 51. Spraying hose; 52. Spraying rod; 53. Spray nozzle; 54. Smoothing baffle; 55. Speed ​​control handle and power switch;

[0044] 6. Buckle. Detailed Implementation

[0045] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0046] It should be noted that all directional indications in the embodiments of the present invention, such as first, second, up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indication will also change accordingly.

[0047] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0048] Example 1: In this example, two sets of breathable shoulder straps (not shown in the attached drawings) are symmetrically arranged on the back of the hopper 1, while the side wall of the isolation working chamber 2 is equipped with hooks that cooperate with the shoulder straps. The shoulder straps are padded to prevent shoulder fatigue during extended periods of carrying, allowing the operator to walk around the hopper 1 while carrying it, making equipment movement more flexible and convenient. The hopper 1 is used to store grouting solutions, such as polyurethane grout, silicone grout, emulsified asphalt solution, and modified emulsified asphalt solution. The bottom wall of the hopper 1 is inclined downwards towards the discharge chamber 23 to facilitate the flow and discharge of the grouting solution. The return pump 231 can be a copper-core high-pressure return pump.

[0049] In this embodiment, the present invention provides a portable asphalt pavement crack repair and reinforcement device, such as... Figures 1-12As shown, it includes: a hopper 1, an isolation working chamber 2, an air intake assembly 3, an air jet assembly 4, and a material spraying assembly 5; the bottom of the hopper 1 is provided with the isolation working chamber 2, and the isolation working chamber 2 is provided with an air filter chamber 21. The two ends of the air filter chamber 21 are respectively connected to the air intake assembly 3 and the air jet assembly 4. The outlet of the hopper 1 is connected to the material spraying assembly 5 through a return material pump 231, which is located inside the isolation working chamber 2. The hopper 1 is provided with a material inlet 11, and a sealing cover 12 is provided at the material inlet 11. The hopper 1 is also provided with a handle 13, which facilitates the movement and operation of the equipment. Gas is ejected through the jet assembly 4, blowing away dust and impurities from the asphalt cracks. The blown-away dust and impurities are then drawn into the air filter chamber 21 through the suction assembly 3 and filtered. The filtered clean gas is then ejected through the jet assembly 4. In this way, the jet assembly 4 ejects clean gas and the suction assembly 3 draws in the blown-away dirty dust gas, forming a circulating gas system. This not only cleans the dust but also prevents dust from flying around in the air, thus avoiding the health hazards and discomfort caused to workers. The process of cleaning dust from the asphalt cracks in the front and injecting grouting solution into the cracks in the rear is carried out simultaneously and intermittently, without interfering with each other. This simplifies the asphalt crack repair process, makes the process simpler, more flexible in operation, and easier to move, effectively improving the efficiency of asphalt crack repair.

[0050] like Figures 1-4 As shown, in the portable asphalt pavement crack repair and reinforcement device provided by the present invention, the air intake assembly 3 includes an inner air intake tube 31, an air intake hose 32, and an air intake rod 33. One end of the inner air intake tube 31 is connected to one end of the air filter chamber 21 via an air intake check valve 34, and the other end of the inner air intake tube 31 extends to the outside of the isolation working chamber 2 and is connected to the air intake hose 32. The air intake hose 32 is connected to the air intake rod 33. The air intake check valve 34 is provided to prevent backflow of air and damage to the gas pipeline.

[0051] Furthermore, the end of the suction rod 33 is provided with a suction hood 35, and a buckle is detachably installed on the side wall of the suction rod 33 above the suction hood 35. Two guide wheels 36 are symmetrically arranged on the buckle. The wheel spacing can be adjusted according to the crack width and road conditions to provide support and guidance for the stainless steel pipe rod, reduce the weight of the operator's right hand holding the pipe rod handle, and make crack repair easier and more convenient.

[0052] In a portable asphalt pavement crack repair and reinforcement device provided by the present invention, the jet assembly 4 includes an inner jet pipe 41, a jet hose 42, and a jet core rod 43. One end of the inner jet pipe 41 is connected to the other end of the air filter chamber 21 via a jet check valve 44. The other end of the inner jet pipe 41 extends to the outside of the isolation working chamber 2 and is connected to the jet hose 42. The jet hose 42 is connected to the jet core rod 43. The jet core rod 43 is embedded in the suction rod 33. Specifically, the jet core rod 43 is embedded in the suction rod 33 after passing through the jet hose 42. Support rods (not shown in the figure) are spaced apart on the inner wall of the suction rod 33 and the outer wall of the jet core rod 43 to ensure that the jet core rod 43 remains stable and does not shake within the suction rod 33. Figure 6 , Figure 8 and Figure 9 As shown, the end of the jet core rod 43 is detachably equipped with a jet nozzle 45, which retracts within the suction hood 35. The suction hood 35 can be made of a transparent material to facilitate observation of the jet range and intensity of the jet nozzle 45 at the end of the jet core rod 43, and the airflow intensity can be adjusted using the fan speed control switch 224.

[0053] A check valve 44 is installed to prevent backflow of airflow and damage to the gas pipeline. An air nozzle 45 is detachably mounted at the end of the air jet core rod 43. The air nozzle 45 allows for adjustment of the airflow range; for example, a fan-shaped nozzle 45 allows for adjustable control of the width of the airflow emitted by the air jet core rod 43, suitable for cleaning dust from asphalt cracks of varying widths. The narrower the airflow range emitted by the nozzle 45, the greater the airflow impact force, thus regulating the airflow intensity and effectively removing dust and impurities from the asphalt cracks. The nozzle 45 retracts within the suction hood 35, preventing direct contact between the nozzle 45 and the asphalt surface, thus avoiding nozzle wear and extending the service life and maintenance of the nozzle 45.

[0054] In addition, such as Figures 3-5As shown, the air filtration chamber 21 is equipped with a fan 211 and a filter cake collection drawer 212; the fan 211 is located near the end of the jet check valve 44, and the filter cake collection drawer 212 is pull-out located near the end of the intake check valve 34. The filter cake collection drawer 212 is equipped with a pull-out ring 213. The inner cavity of the filter cake collection drawer 212 is provided with a large-pore air filter 214, a medium-pore air filter 215, and a micro-pore air filter 216 in sequence along the direction away from the intake check valve 34; the large-pore air filter 214, the medium-pore air filter 215, and the micro-pore air filter 216 are detachable. The filter cake collection drawer 212 is tightly fitted to the intake inner pipe 31 via the intake check valve 34 on its right side. The left side wall of the filter cake collection drawer 212 is close to the fan 211. From the right side to the left side wall of the inner cavity, the filter cake collection drawer 212 is sequentially fitted with a large-pore air filter 214, a medium-pore air filter 215, and a micro-pore air filter 216, filtering large-diameter dust, medium-diameter dust, and fine-diameter dust particles in the air in sequence. The filter cake collection drawer 212 can be pulled out of the air filtration chamber 21 for convenient collection of filter cake and replacement / cleaning of the filters. Specifically, a horizontal plate is fixed in the middle of the air filtration chamber 21, and a rotating fan 211 is mounted on the horizontal plate. The fan 211 is driven by a motor fixed to the horizontal plate. The fan blades of the fan 211 are angled, so that the fan 211 generates an airflow of a certain intensity when rotating. (Refer to the attached diagram.) Figure 3 Appendix Figure 4 and attached Figure 11 As shown. The suction rod 33, suction check valve 34, fan 211, jet check valve 44, and jet core rod 43 form a circulating airflow, as shown in the attached diagram. Figure 5 As shown.

[0055] Furthermore, in the portable asphalt pavement crack repair and reinforcement device provided by the present invention, the spraying assembly 5 includes a spraying hose 51 and a spraying rod 52. One end of the spraying hose 51 is connected to the return material pump 231, and the other end of the spraying hose 51 is connected to the spraying rod 52. A material nozzle 53 is provided at the end of the spraying rod 52. The material nozzle 53 at the end of the spraying rod 52 is spaced apart from the suction hood 35. An air jet nozzle 45 is arranged on the front side, and the material nozzle 53 is arranged on the rear side. A smoothing baffle 54 is provided on the spraying rod 52 near the material nozzle 53. Figure 7 As shown, by setting a smoothing baffle 54 on the side wall of the spray bar 52 near the spray nozzle 53, as the spray bar 52 moves, the crack filling solution is gradually injected into the asphalt cracks, while the crack filling solution remaining on the road surface is smoothed by the smoothing baffle 54. This prevents the crack filling solution remaining on the road surface from solidifying and forming bumps that could endanger driving safety, comfort, and smoothness, thereby reducing traffic safety hazards. The automatic smoothing eliminates the need for manual scraper operation, saving manpower and improving work efficiency.

[0056] Furthermore, such as Figure 1 and Figure 2 As shown, in the portable asphalt pavement crack repair and reinforcement device provided by the present invention, the spraying rod 52 is equipped with a speed control handle power switch 55 that is electrically connected to the return material pump 231. The speed control handle power switch 55 is used to control the return material pump 231, thereby controlling the discharge speed of the crack filling solution from the hopper 1.

[0057] like Figure 3 As shown, in a portable asphalt pavement crack repair and reinforcement device provided by the present invention, the isolation working chamber 2 is further provided with an electrical control room 22 and a discharge chamber 23; the electrical control room 22 and the discharge chamber 23 are located on both sides of the air filter chamber 21, and the discharge chamber 23 is provided with the return material pump 231.

[0058] Furthermore, such as Figure 12 As shown, in the portable asphalt pavement crack repair and reinforcement device provided by the present invention, the electrical control room 22 is equipped with a power supply 221, which can be a lead-acid battery. An electrical control panel 222 is provided on the side wall of the electrical control room 22. The electrical control panel 222 contains a fan power switch 223 and a fan speed control switch 224. The electrical control panel 222 also has a waterproof power socket 225, which is connected to the power supply 221. By charging the power supply 221 in the electrical control room 22, electrical connection is achieved to the fan 211 and the return material pump 231, improving working efficiency. By setting the fan power switch 223, the fan speed of the fan 211 is controlled by the fan speed control switch 224. The isolation working chamber 2 is provided with channels or holes for laying electrical wires. The wires connected to the push-button switch extend from the pipes into the electrical control room 22 of the isolation working chamber 2, avoiding a scattered distribution of power supply lines.

[0059] Furthermore, in the portable asphalt pavement crack repair and reinforcement device provided by the present invention, the portable asphalt pavement crack repair and reinforcement device also includes a buckle 6 for binding and connecting the air intake component 3, the air jet component 4, and the spraying component 5. The buckle 6 facilitates the binding of the air intake component 3, the air jet component 4, and the spraying component 5 together, making it convenient for the operator to hold the handle while working.

[0060] Furthermore, the present invention also provides a repair method based on any of the portable asphalt pavement crack repair and reinforcement devices described above, comprising the following steps:

[0061] S1: Aim the jet assembly (4) at the asphalt crack. The polluted gas enters the air filter chamber (21) through the suction assembly (3). After being filtered, the polluted gas is sprayed out through the jet assembly (4) to blow away the dust in the asphalt crack. The blown-out dust gas is sucked in by the suction assembly (2). This cycle forms a circulating airflow to clean the asphalt crack.

[0062] S2: Start the return material pump (231). The return material pump (231) delivers the crack filling solution from the lowest point of the bottom wall of the silo (1) along the spraying assembly (5) and injects it into the asphalt crack, thereby starting the repair of the asphalt crack.

[0063] Specifically, the repair method of this portable asphalt pavement crack repair and reinforcement device includes the following steps:

[0064] In use, the grouting solution is injected into the storage silo 1 through the equipment injection port 11. The operator carries the silo 1 on their back using a breathable shoulder strap, holds the stainless steel telescopic spray bar handle with their right hand, and aims the spray nozzle 45 of the spray core rod 43 at the asphalt crack. With their left hand, they turn on the blower 211 by switching on the blower power switch 223 in the electronic control panel 222. The polluted gas is drawn into the air passage from the end of the suction rod 33 through the suction hood 35, and then enters the air filter chamber 21 through the suction hose 32 from the inner suction pipe 31 via the suction check valve 34. After passing through the large-pore air filter 214, the medium-pore air filter 215, and the micropore air filter 216 in sequence, the gas exits from the left side of the air filter chamber 21. The jet check valve 44 enters the jet inner tube 41, while the clean gas that has filtered out the dust is sprayed out from the jet nozzle 45 along the gas pipe, blowing away the dust in the asphalt cracks. The blown-out dust is covered by the suction hood 35 and then sucked into the suction rod 33. This cycle is repeated so that dust of different particle sizes is blocked by air filters of different pore sizes and accumulates in the filter residue collection drawer 212. The filter residue collection drawer 212 can be removed for easy cleaning of dust and replacement of filters. The jet nozzle 45 sprays out clean gas and the suction hood 35 sucks in the blown-out dirty gas, forming a circulating airflow, thereby preventing dust from flying around and causing air pollution and affecting health.

[0065] The operator pinches the power switch 55 on the speed control handle with their right hand to turn on the return pump 231. The return pump 231 delivers the crack filling solution from the lowest point of the bottom wall of the hopper 1 along the spray hose 51 and spray rod 52 to the nozzle 53, and then injects it into the asphalt crack to begin repairing the asphalt crack. At this time, the operator carries the hopper 1 on their back and holds the stainless steel rod handle with their right hand, using the guide wheel 36 to move the equipment pipeline along the direction of the asphalt crack. At this time, the front air spray nozzle 45 cleans the asphalt crack of dust and impurities, the rear nozzle 53 repairs the asphalt crack, and the smoothing baffle 54 automatically smooths and reinforces the crack. The cleaning and repair of the asphalt crack are carried out simultaneously and are set at intervals without interfering with each other, forming a cyclic process. There is no need to set up an additional dust removal cleaning machine, nor is it necessary to move the tank placed on a trolley or tricycle. The process is simple, reducing production costs and reducing the workload of the operator. Compared with the traditional asphalt crack cleaning technology of cleaning first and then repairing, this equipment performs cleaning and repair simultaneously, simplifying the crack repair steps, making the operation more flexible and convenient, and thus improving the efficiency of asphalt crack repair.

[0066] It should be understood that the above description of specific embodiments of the present invention is only for illustrating the technical approach and features of the present invention, and is intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. However, the present invention is not limited to the specific embodiments described above. All changes or modifications made within the scope of the claims of the present invention should be covered within the protection scope of the present invention.

Claims

1. A portable asphalt pavement crack repair and reinforcement device, characterized in that, The device includes a hopper (1), an isolation working chamber (2), an air intake assembly (3), an air jet assembly (4), and a material spraying assembly (5); The bottom of the hopper (1) is provided with the isolation working chamber (2), and the isolation working chamber (2) is provided with an air filter chamber (21). The two ends of the air filter chamber (21) are connected to the air intake assembly (3) and the air jet assembly (4) respectively through the air intake check valve (34) and the air jet check valve (44) to form an airflow circulation system; two sets of breathable shoulder straps are symmetrically provided on the back of the hopper (1); The discharge port of the silo (1) is connected to the spraying assembly (5) through a return material pump (231). The return material pump (231) is located in the isolation working chamber (2). The silo (1) is provided with a material injection port (11). The air filtration chamber (21) is equipped with a pull-out filter residue collection drawer (212), in which a large-pore air filter (214), a medium-pore air filter (215), and a micro-pore air filter (216) are arranged sequentially along the airflow direction. The suction assembly (3) includes a suction rod (33) and a transparent suction hood (35) located at the end of the suction rod (33). The end of the suction rod (33) is also symmetrically provided with two guide wheels (36). The jet core rod (43) of the jet assembly (4) is embedded in the suction rod (33). The end of the jet core rod (43) is detachably provided with a jet nozzle (45). The jet nozzle (45) is retracted in the transparent suction hood (35). The spraying assembly (5) includes a spraying hose (51) and a spraying rod (52). One end of the spraying hose (51) is connected to the return material pump (231), and the other end of the spraying hose (51) is connected to the spraying rod (52). The end of the spraying rod (52) is provided with a material nozzle (53). A smoothing baffle (54) is provided on the spraying rod (52) near the material nozzle (53). The smoothing baffle (54) is fixedly connected to the spraying rod (52) and is spaced apart from the material nozzle (53). It automatically smooths the crack filling solution remaining on the road surface during injection.

2. The portable asphalt pavement crack repair and reinforcement device according to claim 1, characterized in that, The air intake assembly (3) also includes an inner air intake tube (31) and an air intake hose (32). One end of the inner air intake tube (31) is connected to one end of the air filter chamber (21) through an air intake check valve (34). The other end of the inner air intake tube (31) extends to the outside of the isolation working chamber (2) and is connected to the air intake hose (32). The air intake hose (32) is connected to the air intake rod (33).

3. The portable asphalt pavement crack repair and reinforcement device according to claim 2, characterized in that, A buckle is detachably installed on the side wall of the suction rod (33) above the suction head (35), and two guide wheels (36) are symmetrically provided on the buckle.

4. The portable asphalt pavement crack repair and reinforcement device according to claim 3, characterized in that, The jet assembly (4) includes an inner jet tube (41), a jet hose (42), and a jet core rod (43). One end of the inner jet tube (41) is connected to the other end of the air filter chamber (21) through a jet check valve (44). The other end of the inner jet tube (41) extends to the outside of the isolation working chamber (2) and is connected to the jet hose (42). The jet hose (42) is connected to the jet core rod (43).

5. The portable asphalt pavement crack repair and reinforcement device according to claim 4, characterized in that, The air filtration chamber (21) is equipped with a fan (211); the fan (211) is located at one end near the jet check valve (44); the filter cake collection drawer (212) is located at one end near the suction check valve (34) and can be pulled out; the filter cake collection drawer (212) is equipped with a pull ring (213); the large-pore air filter (214), the medium-pore air filter (215), and the micro-pore air filter (216) are detachable.

6. The portable asphalt pavement crack repair and reinforcement device according to claim 1, characterized in that, The spray bar (52) is equipped with a speed control handle power switch (55) that is electrically connected to the return material pump (231).

7. The portable asphalt pavement crack repair and reinforcement device according to claim 1, characterized in that, The isolation working chamber (2) is also equipped with an electrical control room (22) and a discharge chamber (23); the electrical control room (22) and the discharge chamber (23) are located on both sides of the air filter chamber (21), and the discharge chamber (23) is equipped with the return material pump (231).

8. The portable asphalt pavement crack repair and reinforcement device according to claim 7, characterized in that, The electrical control room (22) is equipped with a power supply (221). An electrical control panel (222) is provided on the side wall of the electrical control room (22). The electrical control panel (222) is equipped with a fan power switch (223) and a fan speed control switch (224). The electrical control panel (222) is also equipped with a waterproof power socket (225), which is connected to the power supply (221).

9. The portable asphalt pavement crack repair and reinforcement device according to claim 1, characterized in that, The portable asphalt pavement crack repair and reinforcement device also includes a buckle (6), which is used to bind and connect the air intake assembly (3), the air jet assembly (4) and the spraying assembly (5).

10. A repair method based on the portable asphalt pavement crack repair and reinforcement device according to any one of claims 1-9, characterized in that, Includes the following steps: S1: Turn on the blower (211) and the return material pump (231), aim the jet nozzle (45) of the jet assembly (4) at the asphalt crack, and use the air circulation system to make the dirty gas enter the air filter chamber (21) through the air intake assembly (3). After being filtered by the multi-stage filter screen, the dirty gas is sprayed out through the jet assembly (4) to blow away the dust in the asphalt crack and form a circulating airflow to clean the asphalt crack. S2: While cleaning in a cycle, the return material pump (231) is controlled by the power switch (55) of the speed control handle. The return material pump (231) delivers the crack filling solution from the lowest point of the bottom wall of the hopper (1) along the spraying assembly (5) and injects it into the asphalt crack. The solution is then automatically smoothed on the road surface by the smoothing baffle (54). Steps S1 and S2 are performed simultaneously without interfering with each other.

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