Integrated repairing device for pothole pavement construction and repairing method thereof

Abstract

The invention discloses an integrated repairing device for pothole pavement construction and a repairing method thereof, and relates to the technical field of pavement grouting repairing. The integrated repairing device for pothole pavement construction comprises a bottom plate; the universal wheels are mounted on the left and right sides of the bottom of the bottom plate; the pushing handle is mounted on one side of the top of the bottom plate; the stirring tank structure is mounted on the other side of the top of the bottom plate and positioned on the side of the pushing handle; the integrated stirring and grouting structure is connected with the stirring tank structure, the stirring tank structure is communicated with the integrated stirring and grouting structure, and the integrated stirring and grouting structure comprises an automatic stirring assembly arranged in the stirring tank structure. According to the automatic grouting device, the mode that the slurry is sprayed through gas mixing is adopted, the pressure generated when the slurry is injected into the holes of the road surface is reduced, low-pressure grouting is achieved, the risk that a soil layer around the road surface is damaged is reduced, the uniformity of the grouting material is guaranteed to the maximum extent, and the effect and efficiency of automatic grouting operation are improved.

Description

Technical Field

[0001] This invention relates to the field of road grouting repair technology, specifically to an integrated repair device and repair method for pothole road construction. Background Technology

[0002] When rainwater seeps into the road surface structure, it generates dynamic water pressure under load, which erodes the fine materials of the road surface and softens the road base, leading to potholes. At the same time, under extreme weather conditions (such as continuous heavy rain, freeze-thaw cycles, or excessive temperature differences), it may cause uneven settlement of the roadbed or loosening of the geological structure, which may result in road collapse.

[0003] Grouting repair technology restores pavement smoothness and bearing capacity by injecting grout into potholes and the underlying soil, filling voids, solidifying loose soil, and improving the foundation structure. This method is suitable for pothole damage caused by subgrade settlement, loose soil, or underground cavities.

[0004] Existing road repair equipment typically injects grout into excavated holes in the road surface to fill the potholes. Traditionally, the grout is injected by extrusion into a nozzle. However, even though the grout is mixed to achieve a relatively uniform consistency, gaps and voids still exist between the grout particles, leading to uneven grout distribution and affecting its penetration and filling efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide an integrated repair device and method for pothole road construction, so as to solve the problems mentioned in the background art.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: This invention provides an integrated repair device for pothole construction, comprising: a base plate; casters mounted on the left and right sides of the bottom of the base plate; a push handle mounted on one side of the top of the base plate; a mixing tank structure mounted on the other side of the top of the base plate and located next to the push handle; and an integrated mixing and grouting structure connected to the mixing tank structure, wherein the mixing tank structure and the integrated mixing and grouting structure are interconnected. The integrated mixing and grouting structure includes: an automated mixing assembly disposed inside the mixing tank structure; a gas injection assembly connected to the automated mixing assembly via a synchronous belt and disposed on the side of the mixing tank structure; and a reciprocating extrusion grouting assembly connected to the automated mixing assembly via a synchronous belt and disposed at the bottom of the base plate. The reciprocating extrusion grouting assembly has a gas injection assembly connected to one side of its top, and two synchronous belts are provided.

[0007] As a preferred embodiment of the present invention, the mixing tank structure includes: a lower cover installed on the top of the base plate; an outer protective tank installed on the top of the lower cover; a mixing inner liner installed inside the outer protective tank; and an upper cover installed on the top of the outer protective tank. The inner mixing chamber is equipped with an automatic mixing component, and the top of the upper cover is connected to an eccentric feeding pipe.

[0008] In a preferred embodiment of the present invention, a drain pipe is connected to one side of the bottom of the lower cover, a control valve is installed on the outside of the drain pipe, and a reciprocating extrusion grouting assembly is connected to the bottom of the drain pipe. The outer protective tank and the inner mixing tank are provided with heat-insulating material, and the temperature inside the inner mixing tank is controlled by the heat-insulating material.

[0009] As a preferred embodiment of the present invention, the automated stirring assembly includes: a linear drive source installed at the center of the top of the upper cover; a linear stirring rod connected to the output end of the linear drive source and rotatably connected inside the stirring liner; and stirring blades installed on the outside of the linear stirring rod and disposed inside the stirring liner. The stirring blades are provided in multiple ways.

[0010] As a preferred embodiment of the present invention, the outer side of the top of the linear stirring rod is connected to a synchronous belt movably disposed on the top of the upper cover body via a synchronous pulley, and the outer side of the bottom of the linear stirring rod is connected to a synchronous belt movably disposed on the bottom of the lower cover body via a synchronous pulley.

[0011] In a preferred embodiment of the present invention, the gas injection assembly includes: a side rotating rod connected to the inner side of the synchronous belt via a synchronous pulley and movably disposed outside the outer protective tank; a side reciprocating screw connected to the bottom of the side rotating rod; a gas tank rotatably connected to the bottom of the side reciprocating screw and installed inside the base plate; a side vertical slider connected to the outer side of the side reciprocating screw via ball bearings; a vertical rod connected to the eccentric part inside the side vertical slider and extending into the gas tank; and a gas piston connected to the bottom of the vertical rod and movably disposed inside the gas tank. The gas tank has a gas pipeline connected to its outer side, a reciprocating extrusion grouting assembly connected to its bottom, and a one-way valve installed at the center of the gas piston.

[0012] As a preferred embodiment of the present invention, the reciprocating extrusion grouting assembly includes: a first bevel gear connected to the inner side of the synchronous belt via a synchronous pulley and movably disposed at the bottom of the base plate; a second bevel gear meshing with the side of the first bevel gear; a support frame rotatably connected to the second bevel gear and mounted at the bottom of the base plate; an L-shaped grouting pipeline mounted on the side of the support frame and communicating with the gas tank; a horizontal reciprocating screw connected to the second bevel gear and movably disposed within the support frame; a horizontal slide block connected to the outer side of the horizontal reciprocating screw via ball bearings; a horizontal connecting rod connected to the eccentric part inside the horizontal slide block and extending into the L-shaped grouting pipeline; and an extrusion piston connected to the bottom of the horizontal connecting rod and movably disposed inside the L-shaped grouting pipeline. The compression piston has a one-way valve installed at its internal center, and the L-shaped grouting pipe has a grouting nozzle installed at its bottom.

[0013] This invention also provides an integrated repair method for potholes in road construction, comprising the following steps: S1. Construction preparation: Clean the road surface, locate underground pipelines in the road surface, measure the height of the roadbed fill to determine the grouting depth, then conduct road surface deflection testing and mark the grouting hole positions in the pothole areas; S2. Drilling and Layout: Drill holes in a quincunx or matrix pattern on the potholes. The hole spacing is 1 to 2 meters, and the depth is determined according to the roadbed structure. S3. Grouting Implementation: The prepared materials are poured into the interior of the mixing tank structure and the materials are mixed by starting the automated mixing component. After mixing, the materials are transferred to the interior of the reciprocating extrusion grouting component, and the gas jet component extrudes the grouting material to realize the automated road grouting repair operation. S4. Grouting and sealing: After the grouting volume reaches the standard, the hole is sealed with cement mortar and pressure is maintained for several minutes, and the sealing depth is not less than 30 cm.

[0014] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects: 1. In the integrated repair device and method for pothole road construction, when repairing potholes, gas injection is used. On the one hand, the gas pushes the grout being injected, and the pressure of the grout injected into the potholes is dispersed by the buffering effect of the gas bubbles, achieving low-pressure grouting. This reduces the risk of damage to the surrounding parts of the road surface. At the same time, the injected gas can reduce the viscosity of the grout, generate a microbubble effect, and enhance the fluidity of the grout in the road cracks, thereby expanding the effective grouting range. On the other hand, the gas injection method is synchronously driven by the driving force that stirs the material. The combined use of these two methods can maximize the uniformity of the grouting material and improve the effect and efficiency of automated grouting operations. 2. In the integrated repair device and repair method for pothole road construction, when the first drive source operates to drive the mixing blades to rotate and mix the slurry, the force that drives the mixing blades to rotate can drive the grouting piston to move horizontally inside the L-shaped grouting pipe through belt and screw transmission. This automatically pushes the grouting material after mixing, generating extrusion force to spray the grouting material from the grouting nozzle, thus realizing automated slurry injection operation. It should be noted that the operations of mixing the slurry, extruding and spraying the mixed slurry, and extruding and spraying the gas can all be driven by a single drive source. Power is directly distributed through mechanical transmission, which helps to reduce overall energy consumption and achieve more efficient energy utilization. At the same time, it can more accurately control the slurry state and spraying parameters, reduce defects such as bubbles, and improve the uniformity and quality stability of the spraying. 3. In the integrated repair device and repair method for pothole road construction, the grout is squeezed and injected horizontally, while the direction of filling the gas into the grouting pipe is vertical, and the gas filling position is located at the end of the grouting direction. The coordination of the two positions can accelerate the flow rate of gas and grout in the vertical direction of the L-shaped grouting pipe, and realize faster grouting operation. Attached Figure Description

[0015] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0016] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall main view of the present invention; Figure 3 This is a schematic cross-sectional view of the entire structure of the present invention; Figure 4 This is a schematic diagram of the overall front cross-section of the present invention; Figure 5 This is a cross-sectional structural diagram showing the connection between the mixing tank structure and the automated mixing assembly of the present invention; Figure 6 This is a schematic diagram of the integrated mixing and grouting structure of the present invention; Figure 7 This is a schematic diagram showing the cross-sectional view of the connection between the gas injection component and the reciprocating extrusion grouting component of the present invention; Figure 8 This is a cross-sectional structural schematic diagram of the reciprocating extrusion grouting assembly of the present invention; In the picture: 10. Base plate; 20. Casters; 30. Push handle; 40. Mixing tank structure; 401. Lower cover; 4011. Drain pipe; 4012. Control valve; 402. Outer protective tank; 403. Inner mixing tank; 404. Upper cover; 4041. Feed pipe; 50. Integrated mixing and grouting structure; 500. One-way valve; 501. Automated mixing assembly; 502. Synchronous belt; 503. Gas injection assembly; 504. Reciprocating extrusion grouting assembly; 5011 Linear drive source; 5012 Linear stirring rod; 5013 Stirring blade; 5031, Side rotating rod; 5032, Side reciprocating screw; 5033, Gas tank; 50331, Gas pipeline; 5034, Side vertical slider; 5035, Vertical rod; 5036, Gas piston; 5041, First bevel gear; 5042, Second bevel gear; 5043, Support frame; 5044, L-shaped grouting pipe; 50441, Grouting nozzle; 5045, Horizontal reciprocating screw; 5046, Horizontal slide; 5047, Horizontal connecting rod; 5048, Extrusion piston. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0019] Please see Figures 1-8An integrated repair device for pothole construction includes a base plate 10; casters 20 installed on the left and right sides of the bottom of the base plate 10; a push handle 30 installed on one side of the top of the base plate 10; a mixing tank structure 40 installed on the other side of the top of the base plate 10 and located on the side of the push handle 30; and an integrated mixing and grouting structure 50 connected to the mixing tank structure 40. The mixing tank structure 40 and the integrated mixing and grouting structure 50 are connected. The integrated mixing and grouting structure 50 includes: an automated mixing component 501 disposed inside the mixing tank structure 40; a gas injection component 503 connected to the automated mixing component 501 via a synchronous belt 502 and disposed on the side of the mixing tank structure 40; and a reciprocating extrusion grouting component 504 connected to the automated mixing component 501 via a synchronous belt 502 and disposed at the bottom of the base plate 10. The gas injection component 503 is connected to one side of the top of the reciprocating extrusion grouting component 504, and two synchronous belts 502 are provided.

[0020] The working principle described above is as follows: When repairing potholes in the road surface, the grout to be repaired is first transferred to the mixing tank structure 40. The grout is then automatically mixed by activating the automated mixing component 501, resulting in a more uniform mixture. Simultaneously, the automated mixing component 501 drives the synchronous belt 502, which in turn drives the reciprocating extrusion grouting component 504 connected to the synchronous belt 502. This extrusion process compresses the mixed grout, achieving automated grout injection. Furthermore, the synchronous belt 502 also drives the gas injection component 503, continuously injecting gas into the reciprocating extrusion grouting component 504, mixing the gas with the grout, and facilitating the gas-assisted grouting operation.

[0021] It should be noted that by mixing gas and grout, the grout viscosity is reduced while generating a microbubble effect, which enhances the fluidity of the grout in road surface cracks and thus expands the effective grouting range. At the same time, the pressure is dispersed by the buffering effect of the bubbles, achieving low-pressure grouting and reducing the risk of damage to the surrounding road surface.

[0022] For details, please refer to the following: Figure 5 The mixing tank structure 40 includes: a lower cover 401 installed on the top of the base plate 10; an outer protective tank 402 installed on the top of the lower cover 401; a mixing inner liner 403 installed inside the outer protective tank 402; and an upper cover 404 installed on the top of the outer protective tank 402. The mixing inner liner 403 is equipped with an automatic mixing component 501, and the upper cover 404 has an eccentric part at the top connected to a feed pipe 4041.

[0023] In this design, a drain pipe 4011 is connected to one side of the bottom of the lower cover 401. A control valve 4012 is installed on the outside of the drain pipe 4011. A reciprocating extrusion grouting assembly 504 is connected to the bottom of the drain pipe 4011. Thermal insulation material is provided between the outer protective tank 402 and the mixing inner tank 403, and the temperature inside the mixing inner tank 403 is controlled by the thermal insulation material.

[0024] In the integrated repair device for pothole road construction of the present invention, the heat insulation material between the outer protective tank 402 and the mixing inner tank 403 can be used to heat the grouting material, so that the temperature of the grouting material meets the requirements of mixing, thereby improving the mixing effect and efficiency.

[0025] For details, please refer to the following: Figure 5 The automated stirring assembly 501 includes: a linear drive source 5011 installed at the center of the top of the upper cover 404; a linear stirring rod 5012 connected to the output end of the linear drive source 5011 and rotatably connected inside the stirring liner 403; and stirring blades 5013 installed outside the linear stirring rod 5012 and disposed inside the stirring liner 403, wherein multiple stirring blades 5013 are provided.

[0026] In this design, the outer top of the linear stirring rod 5012 is connected to a synchronous belt 502 movably mounted on the top of the upper cover 404 via a synchronous pulley, and the outer bottom of the linear stirring rod 5012 is connected to a synchronous belt 502 movably mounted on the bottom of the lower cover 401 via a synchronous pulley.

[0027] In the integrated repair device for pothole road construction of the present invention, when the slurry is stirred and mixed, the linear drive source 5011 is started to operate, which drives the linear stirring rod 5012 connected to the output end of the linear drive source 5011 to rotate, and drives the stirring blade 5013 installed on the outside of the linear stirring rod 5012 to rotate, so as to stir and mix the grouting material on the outside of the stirring blade 5013.

[0028] When the linear stirring rod 5012 rotates, the synchronous belt 502 connected to its outer side via the synchronous pulley will operate synchronously.

[0029] For details, please refer to the following: Figure 6 and Figure 7The gas injection assembly 503 includes: a side rotating rod 5031 connected to the inside of the synchronous belt 502 via a synchronous pulley and movably disposed on the outside of the outer protective tank 402; a side reciprocating screw 5032 connected to the bottom of the side rotating rod 5031; a gas tank 5033 rotatably connected to the bottom of the side reciprocating screw 5032 and installed inside the base plate 10; a side vertical slider 5034 connected to the outside of the side reciprocating screw 5032 via ball bearings; a vertical rod 5035 connected to the eccentric part inside the side vertical slider 5034 and extending into the gas tank 5033; and a gas piston 5036 connected to the bottom of the vertical rod 5035 and movably disposed inside the gas tank 5033. The gas tank 5033 has a gas pipeline 50331 connected to its outer side, a reciprocating extrusion grouting assembly 504 connected to its bottom, and a one-way valve 500 installed at the center of the gas piston 5036.

[0030] In the integrated repair device for pothole construction of the present invention, when the synchronous belt 502 is in operation, the side rotating rod 5031 connected to the inner side via the synchronous pulley will rotate, driving the side reciprocating screw 5032 installed at the bottom of the side rotating rod 5031 to rotate. When the side reciprocating screw 5032 rotates, the side vertical slider 5034 connected to the outer side via ball bearings will drive the vertical rod 5035 and the gas piston 5036 to move up and down inside the gas tank 5033, pressurizing the gas filled at the bottom of the gas piston 5036, so that the gas can be pressurized and injected into the reciprocating extrusion grouting assembly 504.

[0031] It should be noted that the design of the one-way valve 500 enables one-way gas transmission.

[0032] For details, please refer to the following: Figure 6 , Figure 7 and Figure 8The reciprocating extrusion grouting assembly 504 includes: a first bevel gear 5041 connected to the inner side of the synchronous belt 502 via a synchronous pulley and movably disposed at the bottom of the base plate 10; a second bevel gear 5042 meshing with the side of the first bevel gear 5041; a support frame 5043 rotatably connected to the second bevel gear 5042 and mounted at the bottom of the base plate 10; an L-shaped grouting pipe 5044 mounted on the side of the support frame 5043 and connected to the gas tank 5033; and a grouting pipe 5044 connected to the second bevel gear 5042 and movably disposed at the bottom of the base plate 10. 43. A horizontal reciprocating screw 5045 on the inner side; a horizontal slide 5046 connected to the outer side of the horizontal reciprocating screw 5045 by ball bearings; a horizontal connecting rod 5047 connected to the eccentric part inside the horizontal slide 5046 and extending into the L-shaped grouting pipe 5044; a squeezing piston 5048 connected to the bottom of the horizontal connecting rod 5047 and movably disposed inside the L-shaped grouting pipe 5044, wherein a one-way valve 500 is installed at the inner center of the squeezing piston 5048, and a grouting nozzle 50441 is installed at the bottom of the L-shaped grouting pipe 5044.

[0033] In the integrated repair device for pothole construction of the present invention, when the synchronous belt 502 operates, the first bevel gear 5041 connected to it via the synchronous pulley operates, causing the second bevel gear 5042, which is meshed with the bottom side of the first bevel gear 5041, to rotate. When the second bevel gear 5042 rotates, the horizontal reciprocating screw 5045 connected to its bottom rotates, driving the horizontal slide block 5046, connected to the ball bearings on the outer side of the horizontal reciprocating screw 5045, to move horizontally. When the horizontal slide block 5046 moves horizontally, the extrusion piston 5048, installed inside it via the horizontal connecting rod 5047, moves horizontally within the L-shaped grouting pipe 5044, and the extrusion force generated by its movement extrudes and injects the grout inside the L-shaped grouting pipe 5044.

[0034] It should be noted that the design of the one-way valve 500 allows for the control of unidirectional slurry transport.

[0035] Example 2 Please see Figures 1-8 An integrated repair method for potholes in road surfaces includes the following steps: S1. Construction preparation: Clean the road surface, locate underground pipelines in the road surface, measure the height of the roadbed fill to determine the grouting depth, then conduct road surface deflection testing and mark the grouting hole positions in the pothole areas; S2. Drilling and Layout: Drill holes in a quincunx or matrix pattern on the potholes. The hole spacing is 1 to 2 meters, and the depth is determined according to the roadbed structure. S3. Grouting implementation: The prepared material is poured into the inside of the mixing tank structure 40 and the material is mixed by starting the automatic mixing component 501. After the mixing is completed, the material is transferred to the inside of the reciprocating extrusion grouting component 504. The gas injection component 503 extrudes the grouting material to realize the automated road grouting repair operation. S4. Grouting and sealing: After the grouting volume reaches the standard, the hole is sealed with cement mortar and pressure is maintained for several minutes, and the sealing depth is not less than 30 cm.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

[0037] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention.

[0038] Therefore, any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this invention, based on the technical solution and inventive concept of this invention, should be covered within the protection scope of this invention.

Claims

1. An integrated repair device for pothole road surface construction, characterized in that, include: A base plate (10); casters (20) installed on the left and right sides of the bottom of the base plate (10); a push handle (30) installed on one side of the top of the base plate (10); a mixing tank structure (40) installed on the other side of the top of the base plate (10) and located on the side of the push handle (30); an integrated mixing and grouting structure (50) connected to the mixing tank structure (40), wherein the mixing tank structure (40) and the integrated mixing and grouting structure (50) are connected. The integrated mixing and grouting structure (50) includes: an automated mixing component (501) disposed inside the mixing tank structure (40); a gas injection component (503) connected to the automated mixing component (501) via a synchronous belt (502) and disposed on the side of the mixing tank structure (40); and a reciprocating extrusion grouting component (504) connected to the automated mixing component (501) via a synchronous belt (502) and disposed at the bottom of the base plate (10). Among them, one side of the top of the reciprocating extrusion grouting assembly (504) is connected to a gas injection assembly (503), and two synchronous belts (502) are provided.

2. The integrated repair device for pothole construction according to claim 1, characterized in that: The mixing tank structure (40) includes: a lower cover (401) installed on the top of the base plate (10); an outer protective tank (402) installed on the top of the lower cover (401); a mixing inner liner (403) installed inside the outer protective tank (402); and an upper cover (404) installed on the top of the outer protective tank (402). The inner mixing chamber (403) is equipped with an automatic mixing assembly (501), and the top of the upper cover (404) is connected to an eccentric feeding pipe (4041).

3. The integrated repair device for pothole construction according to claim 2, characterized in that: A drain pipe (4011) is connected to one side of the bottom of the lower cover (401), a control valve (4012) is installed on the outside of the drain pipe (4011), and a reciprocating extrusion grouting assembly (504) is connected to the bottom of the drain pipe (4011). The outer protective tank (402) and the stirring inner liner (403) are provided with heat-insulating material, and the temperature inside the stirring inner liner (403) is controlled by the heat-insulating material.

4. The integrated repair device for pothole construction according to claim 3, characterized in that: The automated stirring assembly (501) includes: a linear drive source (5011) installed at the center of the top of the upper cover (404); a linear stirring rod (5012) connected to the output end of the linear drive source (5011) and rotatably connected inside the stirring liner (403); and stirring blades (5013) installed outside the linear stirring rod (5012) and disposed inside the stirring liner (403). The stirring blades (5013) are provided in multiple ways.

5. The integrated repair device for pothole construction according to claim 4, characterized in that: The outer top of the linear stirring rod (5012) is connected to a synchronous belt (502) movably disposed on the top of the upper cover (404) via a synchronous pulley, and the outer bottom of the linear stirring rod (5012) is connected to a synchronous belt (502) movably disposed on the bottom of the lower cover (401) via a synchronous pulley.

6. The integrated repair device for pothole construction according to claim 1, characterized in that: The gas injection assembly (503) includes: a side rotating rod (5031) connected to the inside of the synchronous belt (502) via a synchronous pulley and movably disposed outside the outer protective tank (402); a side reciprocating screw (5032) connected to the bottom of the side rotating rod (5031); a gas tank (5033) rotatably connected to the bottom of the side reciprocating screw (5032) and installed inside the base plate (10); a side vertical slider (5034) connected to the outside of the side reciprocating screw (5032) via ball bearings; a vertical rod (5035) connected to the eccentric part inside the side vertical slider (5034) and extending into the gas tank (5033); and a gas piston (5036) connected to the bottom of the vertical rod (5035) and movably disposed inside the gas tank (5033). The gas tank (5033) is connected to a gas pipeline (50331) on the outside, and a reciprocating extrusion grouting assembly (504) is connected to the bottom of the gas tank (5033). A one-way valve (500) is installed at the center of the gas piston (5036).

7. The integrated repair device for pothole construction according to claim 6, characterized in that: The reciprocating extrusion grouting assembly (504) includes: a first bevel gear (5041) connected to the inner side of the synchronous belt (502) via a synchronous pulley and movably disposed at the bottom of the base plate (10); a second bevel gear (5042) meshing with the side of the first bevel gear (5041); a support frame (5043) rotatably connected to the second bevel gear (5042) and installed at the bottom of the base plate (10); and an L-shaped grouting pipe (5043) installed on the side of the support frame (5043) and connected to the gas tank (5033). 44); a horizontal reciprocating screw (5045) connected to the second bevel gear (5042) and movably disposed inside the support frame (5043); a horizontal slide (5046) connected to the outside of the horizontal reciprocating screw (5045) by ball bearings; a horizontal connecting rod (5047) connected to the eccentric part inside the horizontal slide (5046) and extending into the L-shaped grouting pipe (5044); and a compression piston (5048) connected to the bottom of the horizontal connecting rod (5047) and movably disposed inside the L-shaped grouting pipe (5044). The extrusion piston (5048) has a one-way valve (500) installed at its internal center, and the L-shaped grouting pipe (5044) has a grouting nozzle (50441) installed at its bottom.

8. An integrated repair method for pothole construction, relating to the integrated repair device for pothole construction as described in any one of claims 1-8, characterized in that, Includes the following steps: S1. Construction preparation: Clean the road surface, locate underground pipelines in the road surface, measure the height of the roadbed fill to determine the grouting depth, then conduct road surface deflection testing and mark the grouting hole positions in the pothole areas; S2. Drilling and Layout: Drill holes in a quincunx or matrix pattern on the potholes. The hole spacing is 1 to 2 meters, and the depth is determined according to the roadbed structure. S3, Grouting implementation: The prepared material is poured into the interior of the mixing tank structure (40), and the material is mixed by starting the automatic mixing component (501). After the mixing is completed, the material is transferred to the interior of the reciprocating extrusion grouting component (504), and the gas jet component (503) extrudes the grouting material to realize the automated road grouting repair operation. S4. Grouting and sealing: After the grouting volume reaches the standard, the hole is sealed with cement mortar and pressure is maintained for several minutes, and the sealing depth is not less than 30 cm.

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