A concrete spraying device

Abstract

The application belongs to the field of concrete coating, and particularly relates to a concrete spraying device, which comprises a conveying assembly, the conveying assembly is used for conveying mixed concrete outward, the bottom end of the conveying assembly is provided with an electric wheel, the rear end of the conveying assembly is provided with a mixing plate, two groups of connecting frames are fixedly connected between the mixing plate and the conveying assembly, a diffusion cover is fixedly connected to the rear end of the outer side of the mixing plate, the end of the diffusion cover is provided with an opening, the rear end of the mixing plate is provided with a grinding frame, the surface of the tunnel can be comprehensively sprayed, with the overall movement of the equipment, the rear grinding frame is the same as the cross-sectional shape of the tunnel, so that the sprayed concrete can be smoothed, the appearance is ensured, the excess concrete can be smoothed, manual operation is not needed, through the setting, the effect of automatically spraying the concrete on the inner wall of the tunnel is realized, the spraying is more uniform and efficient without manual operation.

Description

Technical Field

[0001] This invention belongs to the field of concrete coating, specifically a concrete spraying device. Background Technology

[0002] Concrete is one of the most important civil engineering materials in modern times. It is an artificial stone material made by mixing cementitious materials, granular aggregates, water, and, when necessary, admixtures and additives in a certain proportion, uniformly stirring, compacting, and curing.

[0003] In the construction process, in order to improve the strength of the building, a layer of concrete is often sprayed on the surface. Some structures will have a steel frame built in advance to form a concrete layer together with the concrete in order to improve the strength, while others only need to be sprayed with concrete to form a thin layer.

[0004] Existing concrete spraying methods typically involve on-site mixing, followed by pumping the concrete into hoses, with manual laborers holding the hoses to spray the concrete onto the walls. This method is not only labor-intensive but also prone to causing unevenness on the wall surface. Furthermore, in small tunnels, such as electrical tunnels or drainage tunnels, concrete needs to be sprayed onto the inner walls of the tunnel after it has been excavated. Due to the limited space in the tunnel and the need to spray the top, sides, and bottom, manual operation is particularly difficult.

[0005] Therefore, the present invention provides a concrete spraying device. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this invention to solve its technical problem is as follows: A concrete spraying device according to this invention includes a transmission component for conveying mixed concrete outwards. An electric wheel is provided at the bottom of the transmission component, and a mixing plate is provided at the rear end of the transmission component. Two sets of connecting frames are fixedly connected between the mixing plate and the transmission component. A diffusion hood is fixedly connected to the outer side of the mixing plate near the rear end, and the end of the diffusion hood is open. A grinding frame is provided at the rear end of the mixing plate, and a connecting plate is fixedly connected between the grinding frame and the mixing plate. This allows for comprehensive spraying of the tunnel surface. As the entire device moves, the rear grinding frame has the same cross-sectional shape as the tunnel, thus smoothing the sprayed concrete. This not only ensures aesthetics but also smooths out excess concrete without manual operation. Through this design, a fully automatic effect of spraying concrete on the inner wall of the tunnel is achieved. The entire process is mechanically controlled, requiring no manual intervention, resulting in more uniform spraying and higher efficiency.

[0008] Preferably, the transmission component includes a support frame, with a mixing frame and a raw material cylinder fixedly connected to the top of the support frame. The raw material cylinder is located on one side of the mixing frame, and a transmission pump is fixedly connected to the output end of both the raw material cylinder and the output end of the mixing frame. A transmission pipe is fixedly connected between the transmission pump and the mixing plate. This arrangement allows the sprayed concrete and quick-setting agent to be sprayed together, which can accelerate the initial setting time of the concrete and reduce the problem of falling off. Moreover, this arrangement ensures that the concrete in the mixing frame is normal concrete, which can be mixed for a long time without solidifying.

[0009] Preferably, the inner rear side of the mixing plate is hollow, and the front end of the mixing plate is fixedly connected to a first feeding valve and a second feeding valve. The first feeding valve and the second feeding valve are respectively connected to two transmission pipes. One end of the first feeding valve and the second feeding valve is connected to a buffer component. The mixing component is used to mix the two raw materials. If the concrete is directly fed into the inner side of the mixing plate, it will be difficult to clean after solidification. With the setting of the mixing component, the concrete enters the mixing component through the second feeding valve and the first feeding valve for mixing, and then is squeezed out from the diffuser, ensuring that the sprayed concrete has been fully combined with the quick-setting agent.

[0010] Preferably, the mixing component includes a bifurcated pipe, with two inlets connected to feed valve two and feed valve one, respectively. A separation pipe is fixedly connected to the bottom of the outer side of the bifurcated pipe, and an electric cylinder is slidably connected to the inner side of the separation pipe. A spreading pipe is fixedly connected to the output end of the bifurcated pipe, and the edge of the spreading pipe is connected to a diffuser. One-way valves are fixedly connected to the inner sides of both the output and input ends of the bifurcated pipe. An elastic pad is fixedly connected between the separation pipe and the bifurcated pipe. Concrete and accelerator enter through the two branches of the bifurcated pipe and mix at the junction. Through repeated pulling of the electric cylinder and the setting of the one-way valve, the pulling process becomes a one-way concrete transport process. This not only improves the power of concrete extraction and spraying, but also, with the setting of the elastic pad, ensures that concrete and accelerator only pass through the bifurcated pipe and do not contaminate the electric cylinder. After long-term use, the bifurcated pipe can be replaced.

[0011] Preferably, the diffuser is arranged in a ring shape, and the output end of the diffuser is flat. The height and width of the diffuser are both smaller than the height and width of the grinding frame. The shape of the diffuser ensures that the output end of the diffuser is only a short distance away from the inner wall of the tunnel, so as to ensure that the spraying quality of all parts of the inner wall is roughly the same. In addition, the diffuser does not adhere to the inner wall of the tunnel, so that there are no large-area cracks and defects on the concrete surface after spraying.

[0012] Preferably, the grinding frame includes a fixed plate, the connecting plate is fixedly connected to the fixed plate, and multiple telescopic rods are fixedly connected to the outer side of the grinding frame. The multiple telescopic rods are arranged at equal intervals, and the ends of the telescopic rods are provided with smoothing strips. The smoothing strips are made of flexible material. After the diffusion cover is sprayed, the smoothing strips can smooth the sprayed concrete as they pass. The sprayed concrete layer is generally uneven and has an unsightly shape. After smoothing, it can not only increase the aesthetics, but also repair small defects. The fixed plate is fixedly connected to the mixing plate, and the smoothing strips are in a suspended state, so as to effectively smooth the concrete.

[0013] Preferably, the smoothing strip is made of flexible metal material, with a rubber layer sleeved on the outer side of the smoothing strip, and multiple vibrators are provided on the inner side of the smoothing strip. The multiple vibrators are distributed at equal intervals and connected in series, and the series circuit passes through the rubber layer and is fixed to the outer side of the fixing plate. By setting multiple vibrators, the vibration of the vibrators during the smoothing process can assist in smoothing the concrete, further reducing the defects generated during spraying, and effectively improving the quality of the concrete in the later stage.

[0014] Preferably, the front end of the fixing plate has an inclined groove extending to the rear end. Two rotating rods are rotatably connected to one outer corner of the fixing plate, and the ends of the rotating rods are also fixed with snap-fit ​​sleeves. A recycling sleeve is fixed to the inner side of the top of the inclined groove. An electric winding roller is fixed to the inner side of the fixing plate. Two pulling ropes are fixed to the outer side of the winding roller. A bent rod is fixed between the ends of the two pulling ropes. The bent rod passes through the smoothing strip. Since the required concrete thickness varies for different projects and tunnels, the concrete spraying thickness can be adjusted by slowing down the movement time of the entire device. At this time, it is also necessary to change the area of ​​the smoothing frame. By adjusting the length of multiple telescopic rods, the area of ​​the smoothing strip can be expanded and reduced to adapt to the tunnel area and the thickness of the concrete. The shortened smoothing strip will be pulled and folded diagonally upward by the pulling ropes to ensure the tautness of the smoothing strip on the outer surface.

[0015] Preferably, a snap-fit ​​sleeve is fixedly connected to the end of the telescopic rod. A groove is provided at the end of the snap-fit ​​sleeve away from the telescopic rod. The snap-fit ​​sleeve is slidably snapped into the smoothing strip. By setting the snap-fit ​​sleeve, the sliding trajectory of the smoothing strip can be restricted, allowing the smoothing strip to slide normally while also allowing the smoothing strip to be pushed outward and straightened, making the adjustment process more convenient.

[0016] Preferably, there is a gap between the grinding frame and the diffusion cover, a support arm is fixedly connected to the side of the mixing plate near the electric cylinder, a rotating ball is fixedly connected to the bottom end of the support arm, and two sets of drive wheels are provided at the bottom end of the mixing plate. The support arm can form a triangular support effect with the mixing plate, which improves the stability effect and at the same time increases the movement power of the mixing plate, so that the diffusion cover and the grinding frame can remain stably suspended.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. The concrete spraying device of the present invention, in conjunction with a mixing plate and a diffusion hood, uses a transmission component to transfer concrete to the mixing plate. The mixing plate sprays the concrete outward through the diffusion hood, thereby covering the inner wall of the tunnel. The transmission component is driven forward by electric wheels and external pulling force, which in turn drives the mixing plate forward. The diffusion hood is suspended in the air, thus enabling comprehensive spraying of the tunnel surface. As the entire equipment moves, the rear grinding frame has the same cross-sectional shape as the tunnel, which can smooth the sprayed concrete, ensuring not only aesthetics but also smoothing out excess concrete. No manual operation is required. Through this setup, the effect of fully automatic spraying of tunnel inner wall concrete is achieved. The entire process is mechanically controlled, requiring no manual intervention, and the spraying is more uniform and efficient.

[0019] 2. The concrete spraying device of the present invention mixes concrete in a mixing frame, and then transmits the concrete from the transmission pipe to the mixing plate and the diffuser for spraying via a transmission pump. At the same time, the raw material cylinder contains a concrete accelerator, which is also transmitted to the mixing plate for mixing. This arrangement allows the sprayed concrete and accelerator to be sprayed together, which can accelerate the initial setting time of the concrete and reduce the problem of falling off. Moreover, this arrangement ensures that the concrete in the mixing frame is normal concrete, which can be mixed for a long time without solidifying. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a perspective view of the present invention;

[0022] Figure 2 This is a perspective view of the mixing plate and diffusion shroud of the present invention;

[0023] Figure 3 This is a cross-sectional view of the diffusion shroud in this invention;

[0024] Figure 4 This is a perspective view of the grinding frame in this invention;

[0025] Figure 5 This is a cross-sectional view of the grinding frame in this invention;

[0026] Figure 6 This is a perspective view of the bifurcated tube in this invention;

[0027] In the diagram: 1. Conveying assembly; 2. Mixing plate; 3. Stirring frame; 4. Raw material cylinder; 5. Conveying pipe; 6. Connecting frame; 7. Diffuser hood; 8. Grinding frame; 9. Feed valve one; 10. Feed valve two; 11. Electric cylinder; 12. Support arm; 13. Rotating ball; 14. Drive wheel; 15. Fixing plate; 16. Connecting plate; 17. Smoothing strip; 18. Telescopic rod; 19. Recovery sleeve; 20. Pull rope; 21. Snap-fit ​​sleeve; 22. Rotating rod; 23. Branch pipe; 24. Deployment pipe; 25. One-way valve; 26. Separation pipe. Detailed Implementation

[0028] 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.

[0029] Example 1

[0030] like Figures 1 to 4 As shown in the embodiment of the present invention, a concrete spraying device includes a transmission component 1 for conveying mixed concrete. The transmission component 1 has an electric wheel at its bottom and a mixing plate 2 at its rear end. Two sets of connecting frames 6 are fixedly connected between the mixing plate 2 and the transmission component 1. A diffuser hood 7 is fixedly connected to the outer side of the mixing plate 2 near its rear end, with an open end. A grinding frame 8 is located at the rear end of the mixing plate 2, and a connecting plate 16 is fixedly connected between the grinding frame 8 and the mixing plate 2. In operation, existing concrete spraying methods typically involve on-site mixing, followed by pumping the concrete into a hose, which is then manually sprayed onto the wall. This method is not only labor-intensive but also prone to causing unevenness on the wall surface. Furthermore, in small tunnels, such as electrical tunnels or drainage tunnels, it is necessary to... Spraying concrete onto the inner walls of a tunnel is extremely difficult due to the limited space and the need to spray the top, sides, and bottom. The system utilizes a mixing plate 2 and a diffuser hood 7. A transmission assembly 1 transfers concrete to the mixing plate 2, which then sprays the concrete outwards through the diffuser hood 7, covering the entire inner wall of the tunnel. An electric wheel and external tension drive the transmission assembly 1 forward, which in turn moves the mixing plate 2 forward. The diffuser hood 7 remains suspended, allowing for comprehensive spraying of the tunnel surface. As the equipment moves, a smoothing frame 8, with a cross-sectional shape identical to the tunnel, smooths the sprayed concrete, ensuring a clean appearance and removing excess concrete without manual intervention. This fully automated system achieves the effect of spraying concrete onto the inner walls of the tunnel, with complete mechanical control, more uniform spraying, and higher efficiency.

[0031] like Figures 1 to 2As shown, the transmission component 1 includes a support frame, with a mixing frame 3 and a raw material cylinder 4 fixedly connected to the top of the support frame. The raw material cylinder 4 is located on one side of the mixing frame 3. A transmission pump is fixedly connected to the output end of the raw material cylinder 4 and the output end of the mixing frame 3. A transmission pipe 5 is fixedly connected between the transmission pump and the mixing plate 2. During operation, the concrete spraying process generally requires a long initial setting time, which can easily cause the concrete on the top and side walls to fall off. The concrete is mixed by the mixing frame 3, and then the concrete is transmitted from the transmission pipe 5 to the mixing plate 2 and the diffuser 7 for spraying by the transmission pump. At the same time, the raw material cylinder 4 contains a concrete accelerator, which is also transmitted to the mixing plate 2 for mixing. This arrangement allows the sprayed concrete and the accelerator to be sprayed together, which can accelerate the initial setting time of the concrete and reduce the problem of falling off. In addition, this arrangement ensures that the concrete in the mixing frame 3 is normal concrete, which can be mixed for a long time without solidifying.

[0032] like Figures 1 to 2 As shown, the inner side of the mixing plate 2 is hollow towards the rear end. The front end of the mixing plate 2 is fixed with a feed valve 1 9 and a feed valve 2 10. The feed valve 2 10 and the feed valve 1 9 are respectively connected to two transmission pipes 5. One end of the feed valve 2 10 and the feed valve 1 9 is connected to a buffer component. The mixing component is used to mix the two raw materials. During operation, if the concrete is directly fed into the inner side of the mixing plate 2, it will be difficult to clean after solidification. With the setting of the mixing component, the concrete enters the mixing component through the feed valve 2 10 and the feed valve 1 9 for mixing, and then is squeezed out from the diffuser hood 7, ensuring that the sprayed concrete has been fully combined with the quick-setting agent.

[0033] like Figures 2 to 6 As shown, the mixing assembly includes a bifurcated pipe 23. The two inlets of the bifurcated pipe 23 are connected to feed valve 20 and feed valve 9, respectively. A separation pipe 26 is fixedly connected to the bottom of the outer side of the bifurcated pipe 23. An electric cylinder 11 is slidably connected to the inner side of the separation pipe 26. An expansion pipe 24 is fixedly connected to the output end of the bifurcated pipe 23. The edge of the expansion pipe 24 is connected to the diffuser 7. One-way valves 25 are fixedly connected to the inner sides of both the output and input ends of the bifurcated pipe 23. An elastic pad is fixedly connected between the separation pipe 26 and the bifurcated pipe 23. During operation, concrete and quick-setting agent enter through the two branches of the bifurcated pipe 23 and mix at the junction. Through the repeated pulling of the electric cylinder 11 and the setting of the one-way valve 25, the pulling process becomes a one-way concrete transportation process. This not only improves the power of concrete extraction and spraying, but also, with the setting of the elastic pad, ensures that concrete and quick-setting agent only pass through the bifurcated pipe 23 and do not contaminate the electric cylinder 11. After long-term use, the bifurcated pipe 23 can be replaced.

[0034] like Figures 2 to 3As shown, the diffuser 7 is arranged in a ring shape, and the output end of the diffuser 7 is arranged in a flat shape. The height and width of the diffuser 7 are both smaller than the height and width of the grinding frame 8. During operation, the shape of the diffuser 7 ensures that the output end of the diffuser 7 is only a short distance away from the inner wall of the tunnel, thus ensuring that the spraying quality of various parts of the inner wall is roughly the same. Furthermore, the diffuser 7 does not adhere to the inner wall of the tunnel, so that there are no large-area cracks and defects on the concrete surface after spraying.

[0035] like Figure 4 As shown, the smoothing frame 8 includes a fixed plate 15, and the connecting plate 16 is fixedly connected to the fixed plate 15. Multiple telescopic rods 18 are fixedly connected to the outer side of the smoothing frame 8. The multiple telescopic rods 18 are arranged at equal intervals. The ends of the telescopic rods 18 are provided with smoothing strips 17. The smoothing strips 17 are made of flexible material. During operation, after the diffusion cover 7 is sprayed, the smoothing strips 17 can smooth the sprayed concrete as they pass by. The sprayed concrete layer is generally uneven and has an unsightly shape. After smoothing, it can not only increase the aesthetics, but also repair small defects. The fixed plate 15 is fixedly connected to the mixing plate 2, and the smoothing strips 17 are in a suspended state, so that the concrete can be effectively smoothed.

[0036] like Figure 4 As shown, the smoothing strip 17 is made of flexible metal material. A rubber layer is sleeved on the outer side of the smoothing strip 17, and multiple vibrators are provided on the inner side of the smoothing strip 17. The multiple vibrators are distributed at equal intervals and connected in series. The series circuit passes through the rubber layer and is fixed to the outer side of the fixing plate 15. During operation, the vibration of the multiple vibrators during the smoothing process can help smooth the concrete, further reduce the defects generated during spraying, and effectively improve the quality of the concrete in the later stage.

[0037] like Figures 4 to 5 As shown, the front end of the fixing plate 15 has an inclined groove extending to the rear end. Two rotating rods 22 are rotatably connected to one corner of the outer side of the fixing plate 15. The ends of the rotating rods 22 are also fixed with snap-fit ​​sleeves 21. A recycling sleeve 19 is fixed to the inner side of the top of the inclined groove. An electric winding roller is fixed to the inner side of the fixing plate 15. Two pulling ropes 20 are fixed to the outer side of the winding roller. A bent rod is fixed between the ends of the two pulling ropes 20. The bent rod passes through the smoothing strip 17. During operation, since the required concrete thickness varies for different projects and tunnels, the concrete spraying thickness can be increased by slowing down the movement time of the entire device. At this time, it is also necessary to change the area of ​​the smoothing frame 8. By adjusting the length of multiple telescopic rods 18, the area of ​​the smoothing strip 17 can be expanded and reduced to adapt to the tunnel area and concrete thickness. The shortened smoothing strip 17 will be pulled and folded diagonally upward by the pulling ropes 20 to ensure the tautness of the smoothing strip 17 on the outer surface.

[0038] like Figures 4 to 5As shown, a snap-fit ​​sleeve 21 is fixedly connected to the end of the telescopic rod 18. The snap-fit ​​sleeve 21 has a groove at the end away from the telescopic rod 18. The snap-fit ​​sleeve 21 is slidably snapped into the smoothing strip 17. During operation, the snap-fit ​​sleeve 21 can restrict the sliding trajectory of the smoothing strip 17, allowing the smoothing strip 17 to slide normally while also allowing the smoothing strip 17 to be pushed outward and straightened, making the adjustment process more convenient.

[0039] Example 2

[0040] like Figures 1 to 2 As shown in the comparative embodiment one, another embodiment of the present invention is as follows: there is a gap between the grinding frame 8 and the diffusion cover 7, a support arm 12 is fixedly connected to the side of the mixing plate 2 near the electric cylinder 11, a rotating ball 13 is fixedly connected to the bottom end of the support arm 12, and two sets of drive wheels 14 are provided at the bottom end of the mixing plate 2. During operation, the support arm 12 and the mixing plate 2 can form a triangular support effect, which improves the stability effect and at the same time increases the movement power of the mixing plate 2, so that the diffusion cover 7 and the grinding frame 8 can remain stably suspended.

[0041] In practice, existing concrete spraying methods typically involve on-site mixing, followed by pumping the concrete into hoses. Workers then manually spray the concrete onto the walls using the hoses. This method is not only labor-intensive but also prone to causing uneven surfaces. Furthermore, in small tunnels, such as electrical tunnels or drainage tunnels, the inner walls need to be sprayed with concrete after the tunnel has been excavated. Due to the limited space and the need to spray the top, sides, and bottom, manual operation is extremely difficult. By incorporating a mixing plate 2 and a diffuser 7, the concrete is transferred from the conveying assembly 1 to the mixing plate 2. The mixing plate 2 then sprays the concrete outwards through the diffuser 7, thus covering the inner walls of the tunnel. Electric wheels and external pulling force drive the transmission component 1 forward, thereby moving the mixing plate 2 forward. The diffuser hood 7 is suspended in the air, allowing for comprehensive spraying of the tunnel surface. As the equipment moves, the rear grinding frame 8 matches the cross-sectional shape of the tunnel, smoothing the sprayed concrete. This not only ensures aesthetics but also smooths out excess concrete without manual operation. This setup achieves fully automated spraying of the tunnel's inner wall concrete, with complete mechanical control and more uniform and efficient spraying. During concrete spraying, a long initial setting time is generally required, which can easily cause concrete to fall off the top and side walls. The concrete is mixed by the mixing frame 3 and then transported by the transfer pump. The concrete is conveyed from the transfer pipe 5 to the mixing plate 2 and the diffuser 7 for spraying. Simultaneously, the concrete accelerator in the raw material cylinder 4 is also conveyed to the mixing plate 2 for mixing. This arrangement allows the sprayed concrete and accelerator to combine before spraying, accelerating the initial setting time of the concrete and reducing the problem of spillage. Furthermore, this arrangement ensures that the concrete in the mixing frame 3 is normal concrete, which can be mixed for a long time without solidifying. If the concrete were directly fed into the inner side of the mixing plate 2, it would be difficult to clean after solidification. With the mixing component, the concrete enters the mixing component through the second feed valve 10 and the first feed valve 9 for mixing, and then is squeezed out from the diffuser 7, ensuring that the sprayed concrete is fully mixed with the accelerator. The concrete and quick-setting agent enter through two branches in the bifurcation pipe 23 and mix at the junction. Through repeated pulling of the electric cylinder 11 and the setting of the one-way valve 25, the pulling process becomes a one-way transportation of concrete. This not only improves the power of concrete extraction and spraying, but also, with the setting of the elastic pad, ensures that the concrete and quick-setting agent only pass through the bifurcation pipe 23 and do not contaminate the electric cylinder 11. After long-term use, the bifurcation pipe 23 can be replaced. The shape of the diffuser 7 is designed so that the output end of the diffuser 7 is only a short distance away from the inner wall of the tunnel, ensuring that the spraying quality of all parts of the inner wall is roughly the same. In addition, the diffuser 7 does not adhere to the inner wall of the tunnel, so that there are no large-area cracks and defects on the concrete surface after spraying.After the diffuser hood 7 is sprayed, the smoothing strip 17 smooths the sprayed concrete. Sprayed concrete layers are generally uneven and unsightly; smoothing not only improves aesthetics but also repairs minor defects. The fixing plate 15 is fixed to the mixing plate 2, and the smoothing strip 17 is suspended, effectively smoothing the concrete. Multiple vibrators assist in smoothing the concrete during the process, further reducing imperfections caused during spraying and effectively improving the quality of the concrete later. Since different projects and tunnels require different concrete thicknesses, the concrete... To increase the thickness of the soil spraying, simply slowing down the movement time of the entire device allows for the spraying of thicker concrete. This requires adjusting the area of ​​the smoothing frame 8. By adjusting the lengths of multiple telescopic rods 18, the area of ​​the smoothing strip 17 can be expanded and reduced to adapt to the tunnel area and concrete thickness. The shortened smoothing strip 17 is pulled and folded diagonally upwards by the pull rope 20, ensuring the tautness of the outer surface smoothing strip 17. The locking sleeve 21 restricts the sliding trajectory of the smoothing strip 17, allowing it to slide normally while also pushing it outwards to tautness, making the adjustment process more convenient.

[0042] 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 illustrative of the principles of 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.

Claims

1. A concrete spraying device, characterized in that: The system includes a transmission component (1) for transporting mixed concrete outwards. The bottom end of the transmission component (1) is equipped with an electric wheel. The rear end of the transmission component (1) is equipped with a mixing plate (2). Two sets of connecting frames (6) are fixedly connected between the mixing plate (2) and the transmission component (1). A diffusion cover (7) is fixedly connected to the outer side of the mixing plate (2) near the rear end. The end of the diffusion cover (7) is open. A grinding frame (8) is provided at the rear end of the mixing plate (2). A connecting plate (16) is fixedly connected between the grinding frame (8) and the mixing plate (2). The transmission component (1) includes a support frame, and a stirring frame (3) and a raw material cylinder (4) are fixedly connected to the top of the support frame. The raw material cylinder (4) is located on one side of the stirring frame (3). A transmission pump is fixedly connected to the output end of the raw material cylinder (4) and the output end of the stirring frame (3). A transmission pipe (5) is fixedly connected between the transmission pump and the mixing plate (2). The inner side of the mixing plate (2) is hollow near the rear end. The front end of the mixing plate (2) is fixed with a feed valve one (9) and a feed valve two (10). The feed valve two (10) and the feed valve one (9) are respectively connected to two transmission pipes (5). One end of the feed valve two (10) and the feed valve one (9) is connected to a mixing component. The mixing component is used to mix two raw materials. The mixing component includes a bifurcated tube (23), the two inlets of which are connected to feed valve 2 (10) and feed valve 1 (9) respectively. A separation tube (26) is fixedly connected to the bottom of the outer side of the bifurcated tube (23). An electric cylinder (11) is slidably connected to the inner side of the separation tube (26). An expansion tube (24) is fixedly connected to the output end of the bifurcated tube (23). The edge of the expansion tube (24) is connected to the diffuser (7). A one-way valve (25) is fixedly connected to the inner side of both the output and input ends of the bifurcated tube (23). An elastic pad is fixedly connected between the separation tube (26) and the bifurcated tube (23). The diffuser (7) is arranged in a ring shape, and the output end of the diffuser (7) is arranged in a flat shape. The height and width of the diffuser (7) are both smaller than the height and width of the grinding frame (8). The grinding frame (8) includes a fixed plate (15), the connecting plate (16) is fixedly connected to the fixed plate (15), and a plurality of telescopic rods (18) are fixedly connected to the outside of the grinding frame (8). The plurality of telescopic rods (18) are arranged at equal intervals, and the ends of the telescopic rods (18) are provided with smoothing strips (17), which are made of flexible material.

2. The concrete spraying device according to claim 1, characterized in that: The smoothing strip (17) is made of flexible metal material. A rubber layer is sleeved on the outside of the smoothing strip (17). Multiple vibrators are provided on the inside of the smoothing strip (17). The multiple vibrators are distributed at equal intervals and connected in series. The series circuit passes through the rubber layer and is fixed to the outside of the fixing plate (15).

3. The concrete spraying device according to claim 1, characterized in that: The front end of the fixed plate (15) is provided with a sloping groove extending to the rear end. Two rotating rods (22) are rotatably connected to one corner of the outer side of the fixed plate (15). The end of the rotating rod (22) is also fixed with a snap-fit ​​sleeve (21). A recycling sleeve (19) is fixed to the inner side of the top of the sloping groove. An electric winding roller is fixed to the inner side of the fixed plate (15). Two pulling ropes (20) are fixed to the outer side of the winding roller. A bent rod is fixed between the ends of the two pulling ropes (20). The bent rod passes through the smoothing strip (17).

4. A concrete spraying device according to claim 3, characterized in that: The end of the telescopic rod (18) is fixedly connected to a snap-fit ​​sleeve (21). The snap-fit ​​sleeve (21) has a groove at one end away from the telescopic rod (18). The snap-fit ​​sleeve (21) is slidably snapped into the smoothing strip (17).

5. A concrete spraying device according to claim 4, characterized in that: There is a gap between the grinding frame (8) and the diffusion cover (7). A support arm (12) is fixed to the side of the mixing plate (2) near the electric cylinder (11). A rotating ball (13) is fixed to the bottom end of the support arm (12). Two sets of drive wheels (14) are provided at the bottom end of the mixing plate (2).

Images