Structure reinforcing injection device and method

Abstract

The invention relates to the technical field of buildings, in particular to a structure reinforcing jetting device and method.The method comprises the following steps that firstly, a reinforcing face base layer is confirmed; 2, surveying and setting out; thirdly, the construction face to be sprayed is fully washed clean; fourthly, spraying construction is conducted, specifically, concrete is sprayed to a to-be-sprayed construction face in a scattered mode through a spraying head, a movable base is made to move up and down in a circulating mode through a driving device and a lead screw, so that the spraying head moves up and down in the vertical direction, meanwhile, a vehicle is used for making a main body and a vehicle frame body move, and then the spraying head conducts linear motion in the horizontal direction; therefore, the reinforcing structure on the to-be-sprayed construction surface is subjected to multi-layer multi-time spraying forming; fifthly, when concrete is sprayed, the thickness of the concrete is slightly larger than that of the control line; sixthly, overall leveling is conducted on the concrete surface; and 7, after the formed concrete is finally set, watering maintenance is started. According to the method, economic and environment-friendly benefits and man-hour benefits generated by a spraying process are adopted.

Description

Technical Field

[0001] This invention relates to a structural reinforcement spraying device and method, belonging to the field of building technology. Background Technology

[0002] Structural reinforcement primarily targets structural columns, beams, and shear walls. On the foundation of an old building, the original protective layer is removed until the reinforcing steel is exposed. A reinforcement layer is then installed on top of the original steel reinforcement, and concrete or grout is poured to form the reinforcement structure, thereby extending the building's lifespan. Alternatively, a new structural layer can be added to a brick-concrete foundation to reinforce the original structure. The thickness of the reinforcement layer is generally 60mm-100mm, depending on the specific characteristics of the building. Currently, the traditional reinforcement construction process involves: first, setting up a formwork for the entire grouting surface; then, injecting polymer concrete or grout through grouting holes; finally, removing the formwork and allowing it to cure after the material has set, thus completing the reinforcement structure. In contrast, this patent innovatively employs shotcrete construction technology, completely eliminating the need for formwork and directly spraying concrete onto the exposed structural surface. Surface flatness and structural thickness can be precisely controlled using construction lines or formwork guides. For inconvenient construction points, reusable auxiliary tools are used. This solution not only eliminates the formwork installation and removal process, significantly shortening the construction cycle, but also reduces timber consumption, resulting in significant environmental benefits.

[0003] However, in actual operations, concrete spraying usually relies on manual hand-held spraying equipment for structural reinforcement. Due to the varying heights of the structures being reinforced, it is difficult for operators to maintain a vertical spray angle when spraying the upper structure, easily leading to tilted spraying. This not only causes excessive concrete buildup but also results in uneven surfaces on the reinforced structure, significantly increasing the probability of later repairs and affecting construction efficiency, forming quality, and spraying effect. Summary of the Invention

[0004] To address the problems in the prior art, the present invention provides a structural reinforcement spraying device and method.

[0005] The technical solution adopted by this invention to solve its technical problem is: A structural reinforcement spraying device, comprising: main body; The extraction device is connected to the left end of the main body; The hopper is connected to the upper part of the extraction equipment; The frame body is connected to the left end of the main body, and the extraction device is located inside the frame body; A connecting pipe is provided to communicate with the outlet of the extraction device, and the connecting pipe is located at the upper end of the vehicle frame. The outer tube is provided in multiple ways, and the multiple outer tubes are arranged at equal intervals from top to bottom. The lower end of the lowermost outer tube is connected to the other end of the connecting tube. The jetting component has a Z-shaped structure; The inner tube is provided in multiple ways. The multiple inner tubes are respectively installed inside multiple outer tubes and extend out of the upper side of the outer tubes. The uppermost inner tube is connected to the spraying component at its upper end, and the upper ends of the remaining inner tubes are respectively connected to the lower ends of the remaining outer tubes. The first piston, and multiple first pistons are provided, each of which is installed on the lower outer end of multiple inner tubes, and each of the multiple first pistons is slidably connected to multiple outer tubes. The auxiliary components are provided in multiple ways. The multiple auxiliary components are equidistantly connected and installed on the front and rear ends of the spraying component, and the auxiliary components on the front and rear sides are arranged alternately. The lifting component is located at the upper end of the vehicle frame. The lifting component is positioned at the left end of the spray component, and the spray component passes through the lifting component. The spray component and the movable part of the lifting component are detachably connected.

[0006] Furthermore, the lifting component includes a mounting frame with an inverted U-shaped cross-section. The two vertical parts of the mounting frame are symmetrically arranged on the upper end of the vehicle frame. The lower end of the horizontal part of the mounting frame is symmetrically rotatably connected to the upper end of the vehicle frame with two lead screws. A movable seat is slidably connected inside the mounting frame. Both lead screws pass through the movable seat, and the movable seat and the lead screws are connected by a ball nut pair. Auxiliary gears are installed on the upper outer ends of both lead screws. The lower end of the horizontal part of the mounting bracket is rotatably connected to a transmission gear, and the transmission gear is located behind the auxiliary gears. A drive device is provided on the upper end of the mounting bracket, and the output shaft of the drive device is connected to the transmission gear. The transmission gear is connected to the two auxiliary gears via a synchronous belt.

[0007] Furthermore, the spraying component includes an auxiliary tube with a Z-shaped cross-section. The upper transverse portion of the auxiliary tube is located on the uppermost outer tube. The upper end of the uppermost inner tube is connected to the upper transverse portion of the auxiliary tube. The lower transverse portion of the auxiliary tube is installed on the right end of the mounting bracket and extends into the mounting bracket. The left end of the lower transverse portion of the auxiliary tube is connected to a spray head, which extends out of the left side of the mounting bracket. The spray head is detachably connected to the upper end of the movable seat and is located between two lead screws.

[0008] Furthermore, two baffles are symmetrically installed on the left end of the mounting bracket. The two baffles are located on the front and rear sides of the spray head, and the baffles are located on the left side of the lead screw.

[0009] Furthermore, the auxiliary component includes a functional tank, which is connected to the outer end of the vertical portion of the auxiliary tube and is arranged at an angle. A second piston is slidably connected inside the functional tank. A lifting device is installed at the upper end of the functional tank. The movable part of the lifting device passes through the functional tank and is connected to the second piston. The inner end of the functional tank is recessed to form an air hole, which extends to the inner wall of the functional tank. The air hole is located on the upper side of the second piston.

[0010] Furthermore, airbags are installed at the upper outer ends of multiple outer tubes. The other end of the uppermost airbag is located on the upper transverse part of the auxiliary tube. The other ends of the remaining airbags are connected to the lower outer ends of the adjacent upper outer tubes. The airbags are filled with inert gas. The inner walls of multiple outer tubes are recessed outward to form grooves. Limiters are installed on the grooves, and the limiters are located on the outer side of the inner tube and on the upper side of the first piston.

[0011] Furthermore, a first guide rod is installed on the upper end of the vehicle frame, and the first guide rod is located on the right side of the connecting tube. Multiple first frames are equidistantly slidably connected to the outer end of the first guide rod. The uppermost first frame is connected to the outer end of the upper horizontal part of the auxiliary tube. The remaining first frames are respectively connected to the outer ends of the remaining outer tubes, and the first frames are located outside the airbag. A second guide rod is provided on the upper end of the vehicle frame, and the second guide rod is located between the vertical part of the auxiliary tube and the airbag. The outer end of the second guide rod is slidably connected to a second frame. The second frame is connected to the outer end of the upper horizontal part of the auxiliary tube, and the second frame is located to the left of the first frame. A third guide rod is installed on the upper end of the vehicle frame, and the third guide rod is located on the right side of the mounting bracket. The outer end of the third guide rod is slidably connected to a third frame. The third frame is connected to the outer end of the lower horizontal part of the auxiliary tube.

[0012] A structural reinforcement method includes the following steps: The first step is to confirm the base layer of the reinforced surface to ensure that the previous process has been completed and the conditions for concrete construction are met. Then, the relevant equipment and materials are configured and transported to the required location. The second step is to measure and set out the concrete boundary lines and set out the boundary control lines. During the process, pay attention to checking whether the concrete cover of the steel bars meets the design requirements. If it does not meet the design requirements, it should be adjusted before the concrete construction. The third step is to thoroughly clean the surface to be sprayed and moisten it with water 24 hours in advance so that the base layer can fully absorb water and ensure that it does not absorb moisture from the concrete. The fourth step is spraying. The main body is connected to the vehicle, and the prepared concrete is put into the hopper. The concrete is then extracted from the hopper using an extraction device and transported along the connecting pipe, multiple outer pipes, multiple inner pipes, and auxiliary pipes to the spraying head. The spraying head then sprays the concrete in a dispersed manner onto the surface to be sprayed. The drive device, transmission gears, two auxiliary gears, and two lead screws are used to make the movable seat move up and down in a circular motion, thereby making the spraying head move up and down in the vertical direction. At the same time, the vehicle moves the main body and the frame, and the spraying head moves in a straight line in the horizontal direction, thus performing multi-layer and multiple spraying molding on the reinforced structure on the surface to be sprayed.

[0013] Step 5: When spraying concrete, make its thickness slightly higher than the control line. After spraying, let it stand for 20-30 minutes until it stabilizes before starting the finishing operation.

[0014] Step 6: Use a long scraper to scrape off the excess concrete along the construction control line and level the concrete surface as a whole. You can use tools such as a straightedge and laser level to level the surface. After leveling the surface, polish it and hand it over to the curing process.

[0015] Step 7: After the concrete has set, start water curing to keep the surface moist for at least 14 days.

[0016] The beneficial effects of this invention are: Utilizing a motor, transmission gears, a synchronous belt, two auxiliary gears, and two lead screws, the movable seat moves up and down in a cyclical motion, which in turn causes the spraying head to move up and down in a cyclical motion. This achieves mechanical horizontal up-and-down cyclical movement of the spraying head, effectively reducing the probability of excessive concrete accumulation caused by factors such as spraying head tilting, and effectively reducing the probability of unevenness on the reinforced surface. This effectively ensures the spraying effect, quality, and construction efficiency. Simultaneously, the pipeline structure formed by multiple outer and inner pipes can expand or contract vertically, assisting the up-and-down cyclical spraying head in the spraying concrete operation. This effectively reduces the probability of the concrete conveying pipeline folding due to the up-and-down cyclical movement of the spraying head, and effectively reduces the probability of blockages and pipe bursts in the concrete conveying pipeline, effectively ensuring the spraying effect, quality, construction efficiency, and construction safety.

[0017] The reinforcement structure can be constructed without the installation of formwork, saving the time required for formwork disassembly and assembly. In addition, the reinforcement structure has a small structural layer thickness, and the cost-effectiveness of formwork disassembly and assembly is low. Eliminating the formwork has significant economic value, saves timber usage, and has environmental value. Furthermore, it enables the spraying and molding of the facade wall without the use of quick-setting agents, ensuring that the surface of the sprayed and molded reinforcement structure can be effectively smoothed, finished, and other subsequent operations. Attached Figure Description

[0018] Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of a structural reinforcement spraying device according to the present invention; Figure 2 This is a perspective view of a structural reinforcement spraying device according to the present invention; Figure 3 This is an assembly diagram of the auxiliary pipe and the spray head in a structural reinforcement spraying device of the present invention; Figure 4 This is a perspective view of the auxiliary pipe in a structural reinforcement spraying device according to the present invention; Figure 5 for Figure 4 A sectional view; Figure 6 for Figure 4 Sectional view along line AA; Figure 7 for Figure 5 Enlarged view of section B in the middle.

[0019] In the picture: 1. Main body; 11. Extraction equipment; 12. Hopper; 2. Connecting pipe; 3. Chassis body; 31. First guide rod; 311. First frame; 32. Second guide rod; 321. Second frame; 33. Third guide rod; 331. Third frame; 4. Outer tube; 41. Inner tube; 42. Snap ring; 43. First piston; 5. Airbags; 6. Auxiliary pipe; 61. Injection head; 7. Functional tank; 71. Electric push rod; 72. Second piston; 8. Mounting bracket; 81. Motor; 82. Baffle; 83. Transmission gear; 84. Auxiliary gear; 85. Lead screw; 86. Movable seat. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0021] Example 1: As Figures 1-6As shown, a structural reinforcement spraying device is provided, comprising: a main body 1, an extraction device 11 located inside the frame body 3 is installed on the left end of the main body 1, the extraction device 11 is used to extract concrete from the hopper 12, and the hopper 12 is connected to the upper end of the extraction device 11 for storing concrete, the frame body 3 is set on the left end of the main body 1, the frame body 3 provides a mounting carrier for components such as the mounting frame 8, and a connecting pipe 2 located at the upper end of the frame body 3 is connected to the outlet of the extraction device 11 for conveying concrete outward through the connecting pipe 2; Multiple outer pipes 4 are arranged at equal intervals, with the lower end of the lowest outer pipe 4 connected to the other end of the connecting pipe 2. Multiple inner pipes 41 extending from the upper side of the outer pipes 4 are respectively installed inside the multiple outer pipes 4. The upper end of the uppermost inner pipe 41 is connected to the upper transverse part of the auxiliary pipe 6. The upper ends of the remaining inner pipes 41 are respectively connected to the lower ends of the remaining outer pipes 4. The multiple outer pipes 4 and multiple inner pipes 41 are used together to transport concrete into the auxiliary pipe 6. Multiple first pistons 43, which are respectively slidably connected inside the multiple outer pipes 4, are respectively installed on the lower outer ends of the multiple inner pipes 41. The first pistons 43 seal the connection between the outer pipes 4 and the inner pipes 41. The two vertical parts of the inverted U-shaped mounting bracket 8 are symmetrically arranged on the upper end of the vehicle frame 3. The mounting bracket 8 provides a mounting carrier for components such as drive equipment. Two lead screws 85, which pass through the movable seat 86 and are connected to the movable seat 86 through the ball nut pair, are symmetrically rotatably connected between the lower end of the horizontal part of the mounting bracket 8 and the upper end of the vehicle frame 3. The two lead screws 85 work together to make the movable seat 86 move up and down, and then slide the movable seat 86 in the mounting bracket 8. The movable seat 86 provides a mounting carrier for the spray head 61. Two auxiliary gears 84 are respectively mounted on the upper outer ends of two lead screws 85. The lead screws 85 are rotated by the auxiliary gears 84. The transmission gear 83 located behind the auxiliary gears 84 is rotatably connected to the lower end of the transverse part of the mounting frame 8. The transmission gear 83 is connected to the two auxiliary gears 84 by a synchronous belt. The transmission gear 83 and the synchronous belt work together to make the two auxiliary gears 84 rotate synchronously. The fixed part of the drive device connected to the output shaft and the transmission gear 83 is set on the upper end of the mounting frame 8. The transmission gear 83 is driven to rotate by the drive device. The drive device can be a motor 81. The lower horizontal part of the auxiliary pipe 6, which has a Z-shaped cross-section and is located on the uppermost side of the outer pipe 4, is installed on the right end of the mounting frame 8. The lower horizontal part of the auxiliary pipe 6 extends into the mounting frame 8. Concrete is delivered to the spray head 61 through the auxiliary pipe 6. The spray head 61, which extends out of the left side of the mounting frame 8, is connected to the left end of the lower horizontal part of the auxiliary pipe 6 and is located between the two screw rods 85. The spray head 61 is detachably connected to the upper end of the movable seat 86. Concrete is sprayed outward through the spray head 61. Two baffles 82 located on the front and rear sides of the spray head 61 and directly to the left side of the screw rod 85 are symmetrically installed on the left end of the mounting frame 8 to protect the screw rod 85. The first guide rod 31 located on the right side of the connecting pipe 2 is installed on the upper end of the vehicle frame 3. The first guide rod 31 guides the movement of multiple first frames 311. Multiple first frames 311 located outside the airbag 5 are equidistantly slidably connected to the outer end of the first guide rod 31. The uppermost first frame 311 is connected to the outer end of the upper transverse part of the auxiliary pipe 6. The remaining first frames 311 are respectively connected to the outer end of the remaining outer pipe 4. The first frames 311 guide the up and down movement of the outer pipe 4 or the auxiliary pipe 6. A second guide rod 32 is set on the upper end of the vehicle frame 3 between the vertical part of the auxiliary tube 6 and the airbag 5. The second guide rod 32 guides the movement of the second frame 321. The second frame 321, located on the left side of the first frame 311, is slidably connected to the outer end of the second guide rod 32. The second frame 321 is connected to the outer end of the upper horizontal part of the auxiliary tube 6. The second frame 321 guides the up and down movement of the auxiliary tube 6. The third guide rod 33, located on the right side of the mounting bracket 8, is installed on the upper end of the frame body 3. The third guide rod 33 guides the movement of the third frame body 331. The third frame body 331, which is connected to the outer end of the lower transverse part of the auxiliary tube 6, is slidably connected to the outer end of the third guide rod 33. The third frame body 331 guides the up and down movement of the auxiliary tube 6. A groove is formed by recessing the inner wall of multiple outer tubes 4 outward. The groove provides installation space for the limiter. The limiter located on the outer side of the inner tube 41 and the upper side of the first piston 43 is then assembled on the groove. The limiter restricts the upward movement of the second piston 72. The limiter can be a retaining spring 42.

[0022] In use, first connect the main body 1 to the vehicle, then put the prepared concrete into the hopper 12, then start the extraction device 11 to extract the concrete in the hopper 12, and then transport the extracted concrete to the connecting pipe 2, and transport the concrete along the connecting pipe 2, the pipeline structure formed by multiple outer pipes 4 and multiple inner pipes 41 and the auxiliary pipe 6 to the spray head 61, and then use the spray head 61 to spray the concrete in a dispersed manner onto the construction surface to be sprayed horizontally. Simultaneously, the motor 81 is started, thereby driving the transmission gear 83 to rotate. With the assistance of the synchronous belt, the two auxiliary gears 84 rotate synchronously, which in turn causes the two lead screws 85 to rotate synchronously. Since the lead screws 85 are connected to the movable seat 86 through a ball nut pair, the synchronous rotation of the two lead screws 85 causes the movable seat 86 to move upward, which in turn causes the spray head 61 to move upward with the movable seat 86, thereby causing the auxiliary tube 6 to move upward and the uppermost inner tube 41 to move upward, which in turn causes the corresponding first piston 43 to move upward along the corresponding outer tube 4. When the first piston 43 moves upward and contacts the corresponding snap ring 42, the auxiliary tube 6 continues to move upward, thereby causing the uppermost inner tube 41 and the uppermost outer tube 4 to move upward, and causing the adjacent lower inner tube 41 to move upward, thereby causing the corresponding first piston 43 to move upward along the corresponding outer tube 4. In the same way as the above steps, the inner tube 41 and the corresponding outer tube 4 can expand their movement. When the spray head 61 moves to the predetermined height, the motor 81, transmission gear 83, synchronous belt, two auxiliary gears 84, two lead screws 85 and movable seat 86 are used to make the spray head 61 move downward, thereby making the auxiliary tube 6 move downward, and making the uppermost inner tube 41 move downward, thereby making the corresponding first piston 43 move downward along the corresponding outer tube 4. When the first piston 43 moves down to the initial position, the auxiliary tube 6 continues to move downward, thereby causing the uppermost inner tube 41 and the uppermost outer tube 4 to move downward, and causing the adjacent lower inner tube 41 to move downward, thereby causing the corresponding first piston 43 to move downward along the corresponding outer tube 4. In the same way as the above steps, the inner tube 41 and the corresponding outer tube 4 can perform contraction movement. The motor 81 and lead screw 85 are used to make the spray head 61 move up and down in a circular motion, thereby performing multi-layer and multiple spraying on the spraying construction surface. Then, the main body 1 and the frame 3 are moved by the traveling vehicle, thereby performing full spraying on the spraying construction surface, thus completing the structural reinforcement construction. The spray head 61 is mechanically moved horizontally up and down in a circular motion, which effectively reduces the probability of excessive accumulation of sprayed concrete due to factors such as tilting of the spray head 61, effectively reduces the probability of unevenness on the reinforced surface of the sprayed structure, and effectively ensures the spraying effect, quality and construction efficiency. Meanwhile, the pipeline structure formed by multiple outer pipes 4 and multiple inner pipes 41 can expand or contract in the vertical direction, thereby assisting the spraying head 61, which moves up and down in a circular motion, in the spraying concrete operation. This effectively reduces the probability of the concrete conveying pipeline folding due to the up and down circular motion of the spraying head 61, effectively reduces the probability of the concrete conveying pipeline being blocked or bursting, and effectively ensures the spraying molding effect, quality, construction efficiency, and construction safety.

[0023] Example 2: Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, multiple functional tanks 7 arranged at an incline are equidistantly connected and installed at the front and rear ends of the vertical part of the auxiliary pipe 6, with the functional tanks 7 on the front and rear sides arranged alternately. Multiple second pistons 72 are slidably connected inside the multiple functional tanks 7. Through the second pistons 72, concrete flows between the functional tanks 7 and the auxiliary pipe 6. The fixed part of the lifting device, which has a movable part passing through the functional tank 7 and is connected to the second pistons 72, is installed on the upper end of the functional tank 7. Through the lifting device, the second pistons 72 are driven to move up and down along the functional tank 7. The lifting device can be an electric push rod 71. An air hole is formed in the inner end of the functional tank 7, extending to the inner wall of the functional tank 7 and located above the second piston 72. The air hole allows the gas inside the functional tank 7 to flow. Multiple airbags 5 are respectively installed on the upper outer ends of multiple outer tubes 4, and the other end of the uppermost airbag 5 is set on the upper transverse part of the auxiliary tube 6. The other ends of the remaining airbags 5 are respectively connected to the lower outer ends of the adjacent upper outer tubes 4. The airbags 5 are filled with inert gas. The inert gas and the airbags 5 work together to protect the concrete flowing between two adjacent outer tubes 4. Nitrogen can be used as the inert gas.

[0024] In use, the main body 1 is first connected to the vehicle, and then the prepared concrete is put into the hopper 12. Then, the extraction device 11 and the hopper 12 are used to transport the concrete into the connecting pipe 2, and the concrete is transported along the connecting pipe 2, the pipeline structure formed by multiple outer pipes 4 and multiple inner pipes 41 and the auxiliary pipe 6 to the spray head 61. Then, the spray head 61 is used to spray the concrete in a dispersed manner onto the construction surface to be sprayed horizontally. Simultaneously, the motor 81, transmission gear 83, synchronous belt, two auxiliary gears 84, two lead screws 85, and movable seat 86 are used to make the spray head 61 move up and down in a cyclical motion, thereby performing multi-layer and multiple spraying molding on the spraying construction surface. Then, the moving vehicle is used to make the main body 1 and the frame body 3 and other components move, thereby performing comprehensive spraying molding on the spraying construction surface, and thus completing the structural reinforcement construction. During the up-and-down movement of the spray head 61, the auxiliary pipe 6, the uppermost inner pipe 41, and the corresponding first piston 43 will move up and down accordingly. At the same time, the uppermost airbag 5 will wrap the space formed between the auxiliary pipe 6 and the uppermost outer pipe 4, while the other airbags 5 will wrap the space formed between two adjacent outer pipes 4. This achieves the sealing treatment of the moving parts in the pipe structure formed by multiple outer pipes 4 and multiple inner pipes 41 by using the airbags 5 and the inert gas they are filled with. This effectively reduces the probability of air bubbles appearing in the concrete transported in the pipe structure due to the expansion or contraction of the pipe structure, and effectively ensures the spray molding effect and quality. During the contraction movement of the pipeline structure formed by multiple outer pipes 4 and multiple inner pipes 41, the electric push rod 71 can be activated to drive the second piston 72 to move upward along the functional tank 7, thereby continuously extracting the concrete transported from the pipeline structure to the auxiliary pipe 6 and entering the functional tank 7, thereby causing the concrete flowing in the auxiliary pipe 6 to divert, and thus causing the concrete in the auxiliary pipe 6 to undergo deceleration and pressure reduction treatment. During the unfolding of the pipeline structure formed by multiple outer pipes 4 and multiple inner pipes 41, the concrete extracted from the functional tank 7 is transported back to the auxiliary pipe 6 by using the electric push rod 71 and the second piston 72, thereby causing the concrete flowing in the auxiliary pipe 6 to merge, thus accelerating and pressurizing the concrete in the auxiliary pipe 6. This system enables a compensatory treatment of the flowing concrete within the auxiliary pipe 6, effectively reducing the probability of the concrete flow velocity entering the auxiliary pipe 6 decreasing or increasing due to factors such as the expansion or contraction of the pipeline structure causing the conveying path to increase or decrease. It also effectively reduces the probability of excessive impact on the sprayed concrete due to changes in the concrete flow velocity, thus effectively ensuring the spraying molding effect and quality.

[0025] A structural reinforcement method includes the following steps: The first step is to confirm the base layer of the reinforcement surface to ensure that the previous process has been completed and the conditions for concrete construction are met. Then, the relevant equipment and materials are configured and transported to the required location to ensure that the spray-formed reinforcement structure can be completed normally. The second step is to measure and lay out the concrete boundary lines and set out the boundary control lines. During the process, pay attention to checking whether the concrete cover of the steel reinforcement meets the design requirements. If it does not meet the design requirements, it should be adjusted before the concrete construction to effectively avoid excessive spraying of concrete. The third step is to thoroughly clean the surface to be sprayed and moisten it with water 24 hours in advance so that the base layer can fully absorb water and ensure that it does not absorb water from the concrete, in order to ensure the quality of the subsequent sprayed reinforcement structure. Step 4: Spraying construction. Connect the main body 1 to the vehicle, then put the prepared concrete into the hopper 12. Then, use the extraction device 11 to extract the concrete from the hopper 12, and then transport the concrete along the connecting pipe 2, multiple outer pipes 4, multiple inner pipes 41 and auxiliary pipe 6 to the spraying head 61. Then, use the spraying head 61 to spray the concrete in a dispersed manner onto the construction surface to be sprayed. Then, use the motor 81, transmission gear 83, two auxiliary gears 84 and two lead screws 85 to make the movable seat 86 move up and down in a circular motion, so that the spraying head 61 moves up and down in the vertical direction. At the same time, use the vehicle to move the main body 1 and the frame 3, so that the spraying head 61 moves in a straight line in the horizontal direction. In this way, the reinforcement structure on the construction surface to be sprayed is formed by multiple layers and multiple sprayings. The reinforcement structure can be constructed without the installation of formwork, saving the time required for formwork disassembly and assembly. Moreover, the reinforcement structure has a small structural layer thickness, and the cost-effectiveness of formwork disassembly and assembly is low. Eliminating the formwork has significant economic value, saves wood usage, and has environmental value. Step 5: When spraying concrete, make its thickness slightly higher than the control line. After spraying, let it stand for 20-30 minutes until it stabilizes before starting the finishing operation. This allows the spraying and forming of the facade wall to be completed without the use of a quick-setting agent, ensuring that the surface of the reinforced structure can be effectively scraped, smoothed and finished. Step 6: Use a long scraper to scrape off the excess concrete along the construction control line and level the concrete surface as a whole. You can use tools such as a straightedge and laser level to level the surface. After leveling the surface, polish it and hand it over to the curing process. Step 7: After the concrete has set, start water curing to keep the surface moist for at least 14 days.

[0026] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A structural reinforcement spraying device, characterized in that, include: Main body (1); Extraction device (11) is connected to the left end of the main body (1); The hopper (12) is connected to the upper end of the extraction device (11); The frame body (3) is connected to the left end of the main body (1), and the extraction device (11) is located inside the frame body (3); A connecting pipe (2) is connected to the outlet of the extraction device (11), and the connecting pipe (2) is located at the upper end of the frame body (3); The outer tube (4) is provided in multiple ways. The multiple outer tubes (4) are arranged at equal intervals from top to bottom. The lower end of the outer tube (4) at the bottom is connected to the other end of the connecting tube (2). The jetting component has a Z-shaped structure; The inner tube (41) is provided in multiple ways. The multiple inner tubes (41) are respectively provided in multiple outer tubes (4), and the inner tubes (41) extend out of the upper side of the outer tubes (4). The uppermost inner tube (41) is connected to the spraying component and installed. The upper ends of the remaining inner tubes (41) are respectively connected to the lower ends of the remaining outer tubes (4). The first piston (43) is provided in multiple ways. The multiple first pistons (43) are respectively installed on the lower outer ends of multiple inner tubes (41), and the multiple first pistons (43) are respectively slidably connected in multiple outer tubes (4). The auxiliary components are provided in multiple ways. The multiple auxiliary components are equidistantly connected and installed on the front and rear ends of the spraying component, and the auxiliary components on the front and rear sides are arranged alternately. The lifting component is located at the upper end of the vehicle frame (3). The lifting component is located at the left end of the spray component, and the spray component passes through the lifting component. The spray component and the movable part of the lifting component are detachably connected.

2. The structural reinforcement spraying device according to claim 1, characterized in that: The lifting component includes a mounting frame (8), the mounting frame (8) has an inverted U-shaped cross-section, the two vertical parts of the mounting frame (8) are symmetrically arranged on the upper end of the frame body (3), the lower end of the horizontal part of the mounting frame (8) is symmetrically rotatably connected to the upper end of the frame body (3) with two lead screws (85), the mounting frame (8) is slidably connected to a movable seat (86), the two lead screws (85) pass through the movable seat (86), and the movable seat (86) and the lead screws (85) are connected by a ball nut pair; Auxiliary gears (84) are installed on the upper outer ends of both lead screws (85). The lower end of the horizontal part of the mounting bracket (8) is rotatably connected to the transmission gear (83), and the transmission gear (83) is located behind the auxiliary gear (84). A drive device is provided on the upper end of the mounting bracket (8), and the output shaft of the drive device is connected to the transmission gear (83). The transmission gear (83) is connected to the two auxiliary gears (84) through a synchronous belt.

3. The structural reinforcement spraying device according to claim 2, characterized in that: The spraying component includes an auxiliary tube (6) with a Z-shaped cross-section. The upper transverse portion of the auxiliary tube (6) is located on the uppermost outer tube (4). The upper end of the uppermost inner tube (41) is connected to the upper transverse portion of the auxiliary tube (6). The lower transverse portion of the auxiliary tube (6) is installed on the right end of the mounting bracket (8) and extends into the mounting bracket (8). The left end of the lower transverse portion of the auxiliary tube (6) is connected to a spray head (61) and extends out of the left side of the mounting bracket (8). The spray head (61) is detachably connected to the upper end of the movable seat (86) and is located between two lead screws (85).

4. The structural reinforcement spraying device according to claim 4, characterized in that: Two baffles (82) are symmetrically installed on the left end of the mounting bracket (8). The two baffles (82) are located on the front and rear sides of the spray head (61), and the baffles (82) are located on the left side of the lead screw (85).

5. The structural reinforcement spraying device according to claim 4, characterized in that: The auxiliary component includes a functional tank (7), which is connected to the outer end of the vertical part of the auxiliary tube (6) and is arranged at an inclination. A second piston (72) is slidably connected inside the functional tank (7). A lifting device is installed on the upper end of the functional tank (7). The movable part of the lifting device passes through the functional tank (7) and is connected to the second piston (72). The functional tank (7) has an inwardly recessed vent hole that extends to the inner wall of the functional tank (7). The vent hole is located on the upper side of the second piston (72).

6. The structural reinforcement spraying device according to claim 5, characterized in that: Airbags (5) are installed on the upper outer ends of multiple outer tubes (4). The other end of the uppermost airbag (5) is set on the upper transverse part of the auxiliary tube (6). The other ends of the remaining airbags (5) are respectively connected to the lower outer ends of the adjacent upper outer tubes (4). The airbags (5) are filled with inert gas. The inner walls of multiple outer tubes (4) are recessed outward to form a groove. A limiter is installed on the groove. The limiter is located on the outside of the inner tube (41) and on the upper side of the first piston (43).

7. The structural reinforcement spraying device according to claim 6, characterized in that: The upper end of the vehicle frame (3) is equipped with a first guide rod (31), which is located on the right side of the connecting pipe (2). Multiple first frames (311) are equidistantly slidably connected to the outer ends of the first guide rod (31). The uppermost first frame (311) is connected to the outer end of the upper transverse portion of the auxiliary pipe (6). The remaining first frames (311) are connected to the outer ends of the remaining outer pipes (4), and the first frames (311) are located outside the airbag (5). A second guide rod (32) is provided at the upper end of the vehicle frame (3), and the second guide rod (32) is located on the auxiliary pipe (2). Between the vertical part of 6) and the airbag (5), the outer end of the second guide rod (32) is slidably connected to the second frame (321), the second frame (321) is connected to the outer end of the upper horizontal part of the auxiliary tube (6), and the second frame (321) is located to the left of the first frame (311). The upper end of the frame body (3) is equipped with the third guide rod (33), and the third guide rod (33) is located to the right of the mounting bracket (8). The outer end of the third guide rod (33) is slidably connected to the third frame (331), and the third frame (331) is connected to the outer end of the lower horizontal part of the auxiliary tube (6).

8. A structural reinforcement method, using the structural reinforcement spraying device as described in claim 7, characterized in that, Includes the following steps: The first step is to confirm the base layer of the reinforced surface to ensure that the previous process has been completed and the conditions for concrete construction are met. Then, the relevant equipment and materials are configured and transported to the required location. The second step is to measure and set out the concrete boundary lines and set out the boundary control lines. During the process, pay attention to checking whether the concrete cover of the steel bars meets the design requirements. If it does not meet the design requirements, it should be adjusted before the concrete construction. The third step is to thoroughly clean the surface to be sprayed and moisten it with water 24 hours in advance so that the base layer can fully absorb water and ensure that it does not absorb moisture from the concrete. Step 4: Spraying construction. Connect the main body (1) to the vehicle, then put the prepared concrete into the hopper (12), and then use the extraction device (11) to extract the concrete in the hopper (12). Then, transport the concrete along the connecting pipe (2), multiple outer pipes (4), multiple inner pipes (41) and auxiliary pipe (6) to the spraying head (61). Then, use the spraying head (61) to spray the concrete in a dispersed manner onto the surface to be sprayed. Then, use the drive device, transmission gear (83), two auxiliary gears (84) and two screws (85) to make the movable seat (86) move up and down in a circular motion, so that the spraying head (61) moves up and down in the vertical direction. At the same time, use the vehicle to make the main body (1) and the frame body (3) move, so that the spraying head (61) moves in a straight line in the horizontal direction, so that the reinforcement structure on the surface to be sprayed is formed by multiple layers of spraying. Step 5: When spraying concrete, make its thickness slightly higher than the control line. After spraying, let it stand for 20-30 minutes until it stabilizes before starting the finishing operation. Step 6: Use a long scraper to scrape off the excess concrete along the construction control line and level the concrete surface as a whole. You can use tools such as a straightedge and laser level to level the surface. After leveling the surface, polish it and hand it over to the curing process. Step 7: After the concrete has set, start water curing to keep the surface moist for at least 14 days.

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