Grouting device for karst area of foundation pit

Abstract

The utility model relates to the field of foundation pit engineering construction, in particular to a grouting device for a karst area of a foundation pit. Comprising a supporting bottom plate, grouting assemblies are fixedly mounted at the top and the bottom of the supporting bottom plate correspondingly, lifting and injecting assemblies are rotatably mounted in the grouting assemblies, stability augmentation assemblies are fixedly mounted on the outer surfaces of the lifting and injecting assemblies and one sides of the grouting assemblies correspondingly, and positioning assemblies are fixedly mounted on one sides of the lifting and injecting assemblies and one sides of the grouting assemblies correspondingly; a convenient cleaning assembly is fixedly mounted on the front side of the grouting assembly, limiting assemblies are fixedly mounted on the rear side of the convenient cleaning assembly and the front side of the grouting assembly, and fixing assemblies are fixedly mounted on one side of the convenient cleaning assembly and one side of the grouting assembly; the technical problems that the grouting treatment effect is poor and cleaning is inconvenient are solved.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit construction, and in particular to a grouting device for karst areas of foundation pits. Background Technology

[0002] In the field of foundation pit construction, when foundation pit construction is carried out in a karst area, in order to ensure the safety and stability of the foundation pit, the karst area of ​​the foundation pit must be treated with grout before foundation pit construction. In the process of treating the karst area of ​​the foundation pit with grout, a grouting device for the karst area of ​​the foundation pit is often required.

[0003] Chinese Patent CN212294615U discloses a grouting device for karst areas in foundation pits, comprising: a metal mesh, a waterstop plate, a grouting pipe, a pumping pipe, and a one-way communication device. The metal mesh covers the water outlet of the karst area. The edge of the waterstop plate is fixedly connected to the edge of the water outlet of the karst area, but the waterstop plate does not completely cover the water outlet of the karst area. The metal mesh is located between the waterstop plate and the water outlet of the karst area. The pumping pipe is used to pump out water from the karst area, with one end passing through the metal mesh and placed inside the karst area. The side wall of the grouting pipe is provided with multiple internally threaded first connecting ends. One end of the one-way communication device is a second connecting end with external threads, and the second connecting end is threadedly connected to the first connecting end. The one-way communication device is used to guide the grout to the metal mesh and form a sealing wall. This utility model can quickly eliminate the risk of water inrush in the karst area of ​​the foundation pit, solve the problems of difficult grout injection and karst water backflow during construction, realize the sealing of the karst area, save project investment, and ensure construction safety.

[0004] However, in this patent, when constructing a foundation pit in a karst area, and before using the grouting device to inject grout into the karst area, the grouting device cannot stir the grout, resulting in uneven distribution of substances in the grout inside the device. This makes the karst area unstable even after grout injection, reducing the grouting effect of the device. Furthermore, in this patent, when cleaning the grouting device after injecting grout into the karst area, the side of the device cannot be opened, making it difficult to expose the interior and increasing the difficulty of cleaning. Utility Model Content

[0005] This invention provides a grouting device for karst areas of foundation pits to address the problems of poor grouting treatment effect and inconvenient cleaning in the prior art. It can improve the grouting treatment effect and facilitate cleaning.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a grouting device for karst areas of foundation pits, comprising a supporting base plate, wherein grouting components for injecting grout into the karst areas of foundation pits are fixedly installed on the top and bottom of the supporting base plate, a lifting component for improving the grouting effect of the grouting component is rotatably installed inside the grouting component, a stabilizing component for increasing the stability of the lifting component is fixedly installed on the outer surface of the lifting component and on one side of the grouting component, and a positioning component for positioning the lifting component is fixedly installed on one side of the lifting component and one side of the grouting component; a cleaning component for facilitating cleaning of the grouting component is fixedly installed on the front side of the grouting component, a limiting component for limiting the cleaning component is fixedly installed on the rear side of the cleaning component and the front side of the grouting component, and a fixing component for fixing the cleaning component is fixedly installed on one side of the cleaning component and one side of the grouting component.

[0007] Furthermore, the grouting assembly includes an open-type grouting box and four self-locking caster wheel assemblies. The bottom of the open-type grouting box is fixedly installed on the top of the supporting base plate, and the tops of the four self-locking caster wheel assemblies are all fixedly installed on the bottom of the supporting base plate. An inner box plate is movably connected to the front side of the open-type grouting box. A handrail is fixedly connected to the right side of the open-type grouting box. A grouting pump is fixedly connected to the inner bottom wall of the open-type grouting box. A rigid wire is fixedly connected to the top of the grouting pump, and a terminal is fixedly connected to the outer surface of the top of the rigid wire. The bottom of the terminal block is fixedly installed on the top of the perforated grouting box. The output end of the grouting pump is fixedly connected to a first conveying rigid pipe. The first conveying rigid pipe is fixedly installed inside the top box of the perforated grouting box. The top of the first conveying rigid pipe is fixedly connected to a conveying flexible hose. The end of the conveying flexible hose away from the first conveying rigid pipe is fixedly connected to a second conveying rigid pipe. The bottom end of the second conveying rigid pipe is fixedly connected to a grouting tip. The top box of the perforated grouting box is fixedly connected to a grouting pipe. The top outer side of the grouting pipe is threaded with a sealing plug.

[0008] Furthermore, the injection assembly includes a support shaft, which is rotatably installed inside the perforated grouting box. Multiple arc-shaped mixing blades are fixedly connected to the outer surface of one end of the support shaft, and all the arc-shaped mixing blades are rotatably installed inside the perforated grouting box. A holding column is fixedly connected to the end of the support shaft away from the multiple arc-shaped mixing blades, and a support ring is fixedly connected to the outer surface of the end of the support shaft away from the multiple arc-shaped mixing blades. One side of the support ring is rotatably installed on one side of the perforated grouting box, and the other side of the support ring is fixedly installed on the end of the holding column near the support shaft.

[0009] Furthermore, the stabilizing component includes an inner positioning ring and an outer positioning ring. The inner positioning ring is fixedly installed on the outer surface of the support shaft, and one side of the outer positioning ring is fixedly installed on one side of the perforated grouting box. The inner positioning ring is rotatably installed inside the perforated grouting box, and the outer positioning ring is rotatably connected to the inside of the support ring.

[0010] Furthermore, the positioning component includes a first arc-shaped indicator rod and an arc-shaped support plate. One side of the first arc-shaped indicator rod is fixedly installed on the side of the support ring away from the perforated grouting box, and one side of the arc-shaped support plate is fixedly installed on the side of the perforated grouting box. The first arc-shaped indicator rod is fixedly connected to the holding column. A second arc-shaped indicator rod is fixedly connected to the side of the arc-shaped support plate away from the perforated grouting box. The second arc-shaped indicator rod is movably connected to the first arc-shaped indicator rod. A first screw is threadedly connected to the internal thread of the arc-shaped support plate, and the first screw is threadedly connected to the support ring.

[0011] Furthermore, the cleaning assembly includes an outer casing panel, the rear side of which is fixedly installed on the front side of the inner casing panel, and a handle is fixedly connected to the front side of the outer casing panel.

[0012] Furthermore, the limiting component includes a positioning column and a positioning plate. The front end of the positioning column is fixedly installed on the rear side of the outer box plate, and the rear side of the positioning plate is fixedly installed on the front side of the perforated grouting box. The positioning column is movably installed inside the box of the perforated grouting box, and the positioning plate is movably connected to the outer box plate.

[0013] Furthermore, the fixing assembly includes a second support pole and a first support pole. One side of the second support pole is fixedly installed on one side of the outer box plate, and one side of the first support pole is fixedly installed on one side of the open-type grouting box. A limiting rod is fixedly connected to the rear side of the second support pole. The limiting rod is movably installed inside the first support pole. A second screw is threadedly connected to the inside of the second support pole. The second screw is threadedly connected to the first support pole. There are two first support poles, and the top of one first support pole is fixedly connected to the bottom of the handrail.

[0014] The working principle and application principle of this utility model are as follows: During the use of this device, through the arrangement of the supporting base plate, grouting assembly, lifting assembly, stabilizing assembly, and positioning assembly, when constructing a foundation pit in a karst area, and before injecting grout into the karst area, this device can stir the grout. This ensures that the substances in the grout within the device are not unevenly distributed due to lack of stirring, thus preventing instability in the karst area after grout injection. Furthermore, this device prevents instability in the karst area after grout injection. The subsequent instability reduces the grouting effect, so this device can improve the grouting effect. In the process of using this device, through the setting of the easy-cleaning component, limiting component and fixing component, when the foundation pit is constructed in the karst area, and after the grout is injected into the foundation pit karst area using this device, when the device needs to be cleaned, the side of the device can be opened, so that the inside of the device is not exposed due to the side of the device not being able to be opened, so that the inside of the device is not difficult to clean due to the inability to expose it, so that the cleaning difficulty is not increased due to the difficulty of cleaning the inside of the device, and the device can be easily cleaned.

[0015] The beneficial technical effects of this utility model are:

[0016] By incorporating a supporting base plate, grouting components, lifting components, stabilizing components, and positioning components, this device can agitate the grout before injecting it into the karst area during foundation pit construction. This prevents the karst area from remaining unstable after grout injection due to uneven distribution of substances within the grout, thus improving the grouting effect. Furthermore, the inclusion of easy-to-clean, limiting, and fixing components allows for easy opening of the device's sides after grout injection, preventing the interior from being difficult to clean and increasing the difficulty of cleaning. Attached Figure Description

[0017] Figure 1 This is a frontal perspective three-dimensional schematic diagram of the present invention;

[0018] Figure 2 This is a three-dimensional schematic diagram of the first supporting pole of this utility model;

[0019] Figure 3 This is a three-dimensional schematic diagram of the arc-shaped stirring plate of this utility model;

[0020] Figure 4 This is a rear-view perspective view of the present invention;

[0021] Figure 5 This is a three-dimensional schematic diagram of the inner box panel of this utility model;

[0022] Figure 6 This is a frontal sectional view of the present invention.

[0023] Explanation of reference numerals in the attached drawings: 1. Conveying hose; 2. First conveying rigid pipe; 3. Second conveying rigid pipe; 4. Open-type grouting box; 5. Support ring; 6. Holding column; 7. Grouting tip; 8. First arc-shaped indicator rod; 9. Arc-shaped support plate; 10. Second arc-shaped indicator rod; 11. First screw rod; 12. First support upright; 13. Support base plate; 14. Self-locking universal wheel assembly; 15. Handle; 16. Second support upright; 17. Second screw rod; 18. Positioning plate; 19. Handrail; 20. Grouting pipe; 21. Sealing plug; 22. Grouting pump; 23. Support shaft; 24. Arc-shaped mixing blade; 25. Positioning column; 26. Inner positioning ring; 27. Outer positioning ring; 28. Outer box plate; 29. ​​Limiting rod; 30. Inner box plate; 31. Terminal; 32. Rigid wire. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of the embodiments of this application easier to understand, the embodiments of this application are further described below in conjunction with the figures and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the embodiments of this application and are not intended to limit the embodiments of this application.

[0025] Example 1: As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown: A grouting device for karst areas of foundation pits includes a supporting base plate 13, an open-type grouting box 4, four self-locking universal wheel sets 14, a supporting shaft 23, an inner positioning ring 26, an outer positioning ring 27, a first arc-shaped indicator rod 8, and an arc-shaped support plate 9. Grouting components for injecting grout into the karst areas of the foundation pit are fixedly installed on both the top and bottom of the supporting base plate 13. The grouting components include the open-type grouting box 4 and the four self-locking universal wheel sets 14. The bottom of the open-type grouting box 4 is fixedly installed on the top of the supporting base plate 13, and the tops of the four self-locking universal wheel sets 14 are all fixedly installed on the bottom of the supporting base plate 13. An inner box plate 30 is movably connected inside the front box of the open-type grouting box 4, and a handrail 19 is fixedly connected to the right side of the open-type grouting box 4. A grouting pump 22 is fixedly connected to the inner bottom wall of the open-type grouting box 4. A rigid wire 32 is fixedly connected to the top of the grouting pump 22. A terminal 31 is fixedly connected to the outer surface of the top of the rigid wire 32. The bottom of the terminal 31 is fixedly installed on the top of the open-type grouting box 4. A first conveying rigid pipe 2 is fixedly connected to the output end of the grouting pump 22. The first conveying rigid pipe 2 is fixedly installed inside the top box of the open-type grouting box 4. A conveying hose 1 is fixedly connected to the top of the first conveying rigid pipe 2. A second conveying rigid pipe 3 is fixedly connected to the end of the conveying hose 1 away from the first conveying rigid pipe 2. A grouting tip 7 is fixedly connected to the bottom end of the second conveying rigid pipe 3. A grouting pipe 20 is fixedly connected to the inside of the top box of the open-type grouting box 4. A threaded connection is made to the outer surface of the top of the grouting pipe 20. The sealing plug 21 is installed inside the grouting assembly. An injection lifting component, which improves the grouting effect of the grouting assembly, is rotatably mounted inside the perforated grouting box 4. Multiple arc-shaped stirring blades 24 are fixedly connected to the outer surface of one end of the support shaft 23, and all arc-shaped stirring blades 24 are rotatably mounted inside the perforated grouting box 4. A holding column 6 is fixedly connected to the end of the support shaft 23 away from the multiple arc-shaped stirring blades 24, and a support ring 5 is fixedly connected to the outer surface of the end of the support shaft 23 away from the multiple arc-shaped stirring blades 24. One side of the support ring 5 is rotatably mounted to one side of the perforated grouting box 4, and the other side of the support ring 5 is fixedly mounted to the end of the holding column 6 near the support shaft 23. The outer surface of the injection lifting component and the grouting assembly... On one side of each component, a stabilizing component is fixedly installed to increase the stability of the injection assembly. The stabilizing component includes an inner positioning ring 26 and an outer positioning ring 27. The inner positioning ring 26 is fixedly installed inside the outer surface of the support shaft 23, and one side of the outer positioning ring 27 is fixedly installed on one side of the perforated grouting box 4. The inner positioning ring 26 is rotatably installed inside the box of the perforated grouting box 4, and the outer positioning ring 27 is rotatably connected to the inside of the support ring 5. On one side of the injection assembly and one side of the grouting assembly, a positioning component for positioning the injection assembly is fixedly installed. The positioning component includes a first arc-shaped indicator rod 8 and an arc-shaped support plate 9. One side of the first arc-shaped indicator rod 8 is fixedly installed on the side of the support ring 5 away from the perforated grouting box 4, and one side of the arc-shaped support plate 9 is fixedly installed on one side of the perforated grouting box 4.The first arc-shaped indicator rod 8 is fixedly connected to the holding column 6. A second arc-shaped indicator rod 10 is fixedly connected to the side of the arc-shaped support plate 9 away from the perforated grouting box 4. The second arc-shaped indicator rod 10 is movably connected to the first arc-shaped indicator rod 8. A first screw rod 11 is threadedly connected to the inside of the arc-shaped support plate 9. The first screw rod 11 is threadedly connected to the support ring 5. Through the setting of the support base plate 13, grouting assembly, lifting assembly, stabilizing assembly, and positioning assembly, the grouting assembly can inject grout into the karst area of ​​the foundation pit; the lifting assembly can improve the grouting effect of the grouting assembly; the stabilizing assembly can increase the stability of the lifting assembly; and the positioning assembly can... The injection unit is positioned for use during foundation pit construction in karst areas. Before injecting grout into these areas, the unit agitates the grout to prevent uneven distribution of substances within the grout. This ensures the karst area remains stable after grout injection, preventing reduced grouting effectiveness. Ultimately, this device improves the grouting process.

[0026] When in use, the initial state of this device is as follows: no power supply wire is connected inside the terminal 31, the length of the delivery hose 1 is long enough, all four self-locking universal wheel sets 14 are in the self-locking state, the sealing plug 21 is threadedly connected to the grouting pipe 20 and the grouting pipe 20 is in the closed state, the first screw 11 is threadedly connected to the support ring 5, one side of the first arc-shaped indicator rod 8 is located on one side of the second arc-shaped indicator rod 10, the second screw 17 is threadedly connected to the first support rod 12 and the front side of the open-hole grouting box 4 is in the closed state.

[0027] When constructing a foundation pit in a karst area, if this device is needed to inject grout into the karst area, rotate the sealing plug 21 to disconnect it from the grouting pipe 20, opening the top of the grouting pipe 20. Add grout along the top of the opened grouting pipe 20, allowing the grout to enter the perforated grouting box 4 and contact the inner box plate 30. The grouting pump 22, part of the first conveying rigid pipe 2, and part of the rigid wire 32 are all located in the grout inside the perforated grouting box 4. After adding enough grout to the perforated grouting box 4, thread the sealing plug 21 to the grouting pipe 20, closing the top of the grouting pipe 20.

[0028] After the top of the grouting pipe 20 is closed, all four self-locking caster wheel assemblies 14 are locked. Pushing the handle 19, the device can be moved by the action of the four self-locking caster wheel assemblies 14. When the device moves to the location within the karst area of ​​the foundation pit where grout injection is required, stop moving the device and lock all four self-locking caster wheel assemblies 14. Hold the second conveying rigid pipe 3 and align the grouting tip 7 with the area within the karst area of ​​the foundation pit where grout injection is required. Position the device so that the power supply wire is connected to the terminal 31, energize the rigid wire 32, and energize the grouting pump 22. Under the action of the grouting pump 22, the output end of the grouting pump 22 delivers the grout inside the open grouting box 4 along the first conveying rigid pipe 2, the conveying hose 1, the second conveying rigid pipe 3 and the grouting tip 7 in sequence, so that the grout is delivered to the location in the karst area of ​​the foundation pit that needs to be treated with grout injection. At this time, this device can be used to treat the karst area of ​​the foundation pit with grout injection.

[0029] When constructing a foundation pit in a karst area, and before using this device to inject grout into the karst area, rotate the first screw 11 to disengage it from the support ring 5 and position one end of the first screw 11 inside the arc-shaped support plate 9. Rotate the gripping column 6 to disengage the first arc-shaped indicator rod 8 from the second arc-shaped indicator rod 10. Rotate the first arc-shaped indicator rod 8, causing the support ring 5 to rotate along the open-hole grouting box 4, the outer positioning ring 27, and the second arc-shaped indicator rod 10. This causes the support shaft 23, the inner positioning ring 26, and multiple arc-shaped stirring blades 24 to rotate along the open-hole grouting box 4. Under the action of the multiple arc-shaped stirring blades 24 rotating along the open-hole grouting box 4, the multiple arc-shaped stirring blades 24 can stir the grout inside the open-hole grouting box 4, so that the substances in the grout inside the open-hole grouting box 4 can be evenly distributed. This makes the karst area of ​​the foundation pit unstable after being treated with grout, thus improving the grouting effect.

[0030] In summary, when constructing a foundation pit in a karst area, and before using this device to inject grout into the karst area, this device can stir the grout. This ensures that the substances in the grout within the device are not unevenly distributed due to lack of stirring. Furthermore, this uneven distribution of substances within the grout prevents the karst area from remaining unstable after grout injection, thus improving the grouting effect.

[0031] Example 2: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown: A grouting device for karst areas of foundation pits includes an outer box plate 28, a positioning column 25, a positioning long plate 18, a second support column 16, and a first support column 12. A convenient cleaning component for easy cleaning of the grouting assembly is fixedly installed on the front side of the grouting assembly. The convenient cleaning component includes the outer box plate 28, the rear side of which is fixedly installed on the front side of the inner box plate 30. A handle 15 is fixedly connected to the front side of the outer box plate 28. Limiting components for limiting the convenient cleaning component are fixedly installed on both the rear side of the convenient cleaning component and the front side of the grouting assembly. The limiting components include the positioning column 25 and the positioning long plate 18. 8. The front end of the positioning column 25 is fixedly installed on the rear side of the outer box plate 28, and the rear side of the positioning long plate 18 is fixedly installed on the front side of the open-type grouting box 4. The positioning column 25 is movably installed inside the box of the open-type grouting box 4. The positioning long plate 18 is movably connected to the outer box plate 28. Fixing components for fixing the cleaning component are fixedly installed on one side of the cleaning component and one side of the grouting component. The fixing components include a second support column 16 and a first support column 12. One side of the second support column 16 is fixedly installed on one side of the outer box plate 28, and one side of the first support column 12 is fixedly installed on the front side of the grouting box 4. On one side of the open-type grouting box 4, a limiting rod 29 is fixedly connected to the rear side of the second support rod 16. The limiting rod 29 is movably installed inside the first support rod 12. A second screw 17 is threadedly connected to the inside of the second support rod 16. The second screw 17 is threadedly connected to the first support rod 12. There are two first support rods 12. The top of one first support rod 12 is fixedly connected to the bottom of the handrail 19. Through the setting of the easy-cleaning component, the limiting component, and the fixing component, the easy-cleaning component can facilitate the cleaning of the grouting component, and the limiting component can... The convenient cleaning component is limited so that the fixing component can fix the convenient cleaning component. When carrying out foundation pit construction in the karst area, and after using this device to inject grout into the karst area of ​​the foundation pit, when this device needs to be cleaned, the side of this device can be opened so that the inside of the device can be exposed, thus avoiding the difficulty of cleaning the inside of the device due to the inability to open the side of the device. This makes the cleaning of this device convenient.

[0032] When using this device for foundation pit construction in karst areas, and after injecting grout into the karst area, if cleaning is required, ensure all four self-locking caster wheel sets 14 are in a self-locking state, disconnect the wiring terminal 31 from the power supply wire, de-energize the grouting pump 22, rotate the second screw 17 to disengage it from the perforated grouting box 4, and position one end of the second screw 17 inside the second support column 16. Pull the handle 15 to disengage the outer box plate 28 from the perforated grouting box 4, allowing the outer box plate 28 to slide along the positioning plate 18, and the inner box plate 30 to slide along the front side of the perforated grouting box 4. The positioning column 25 slides along the inside of the perforated grouting box 4, causing the second support rod 16 to disengage from the first support rod 12, and the limiting rod 29 to slide along the first support rod 12. When the inner box plate 30 completely slides out from the front side of the perforated grouting box 4, and when the outer box plate 28 disengages from the positioning rod 18, and when the positioning column 25 completely slides out from the inside of the perforated grouting box 4, and when the limiting rod 29 completely slides out from the inside of the first support rod 12, the front side of the perforated grouting box 4 is opened. The inside of the perforated grouting box 4 is cleaned with water along the opened front side of the perforated grouting box 4, allowing the device to be cleaned.

[0033] When this device is used for cleaning, the front side of the perforated grouting box 4 is opened, allowing the side of the perforated grouting box 4 to be opened, exposing the interior of the perforated grouting box 4, making it easy to clean the interior of the perforated grouting box 4, and making it convenient to clean the perforated grouting box 4.

[0034] In summary, when constructing a foundation pit in a karst area, and after using this device to inject grout into the karst area, the side of the device can be opened when cleaning is required. This prevents the internal parts of the device from being blocked due to the side not being open, thus avoiding difficulties in cleaning the internal parts and making the cleaning process easier.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A grouting device for a foundation pit karst area, comprising a supporting bottom plate (13), characterized in that: The top and bottom of the supporting base plate (13) are fixedly installed with grouting components for injecting grout into the karst area of ​​the foundation pit. The grouting components are rotatably installed with lifting components to improve the grouting effect. The outer surface of the lifting components and one side of the grouting components are fixedly installed with stabilizing components to increase the stability of the lifting components. One side of the lifting components and one side of the grouting components are fixedly installed with positioning components for positioning the lifting components. The front side of the grouting components is fixedly installed with a cleaning component to facilitate cleaning of the grouting components. The rear side of the cleaning component and the front side of the grouting components are fixedly installed with limiting components for limiting the cleaning component. One side of the cleaning component and one side of the grouting components are fixedly installed with fixing components for fixing the cleaning component.

2. The grouting device for foundation pit karst area according to claim 1, characterized in that: The grouting assembly includes an open-type grouting box (4) and four self-locking universal wheel sets (14). The bottom of the open-type grouting box (4) is fixedly installed on the top of the supporting base plate (13), and the tops of the four self-locking universal wheel sets (14) are all fixedly installed on the bottom of the supporting base plate (13). An inner box plate (30) is movably connected inside the front box of the open-type grouting box (4). A handrail (19) is fixedly connected to the right side of the open-type grouting box (4). A grouting pump (22) is fixedly connected to the inner bottom wall of the open-type grouting box (4). A rigid wire (32) is fixedly connected to the top of the grouting pump (22). A terminal (31) is fixedly connected to the outer surface of the top of the rigid wire (32). The bottom of the line end (31) is fixedly installed on the top of the perforated grouting box (4). The output end of the grouting pump (22) is fixedly connected to the first conveying hard pipe (2). The first conveying hard pipe (2) is fixedly installed inside the top box of the perforated grouting box (4). The top of the first conveying hard pipe (2) is fixedly connected to the conveying hose (1). The end of the conveying hose (1) away from the first conveying hard pipe (2) is fixedly connected to the second conveying hard pipe (3). The bottom end of the second conveying hard pipe (3) is fixedly connected to the grouting tip (7). The top box of the perforated grouting box (4) is fixedly connected to the grouting pipe (20). The outer side of the top of the grouting pipe (20) is threaded with a sealing plug (21).

3. A grouting device for karst areas of foundation pits according to claim 1 or 2, characterized in that: The injection assembly includes a support shaft (23), which is rotatably installed inside the box of the perforated grouting box (4). Multiple arc-shaped stirring blades (24) are fixedly connected to the outer surface of one end of the support shaft (23). The multiple arc-shaped stirring blades (24) are rotatably installed inside the box of the perforated grouting box (4). A holding column (6) is fixedly connected to the end of the support shaft (23) away from the multiple arc-shaped stirring blades (24). A support ring (5) is fixedly connected to the outer surface of the end of the support shaft (23) away from the multiple arc-shaped stirring blades (24). One side of the support ring (5) is rotatably installed on one side of the perforated grouting box (4), and the other side of the support ring (5) is fixedly installed on the end of the holding column (6) near the support shaft (23).

4. The grouting device for foundation pit karst area according to claim 3, characterized in that: The stabilizing component includes an inner positioning ring (26) and an outer positioning ring (27). The inner positioning ring (26) is fixedly installed on the outer surface of the support shaft (23). One side of the outer positioning ring (27) is fixedly installed on one side of the perforated grouting box (4). The inner positioning ring (26) is rotatably installed inside the perforated grouting box (4). The outer positioning ring (27) is rotatably connected to the inside of the support ring (5).

5. A grouting device for karst areas of foundation pits according to claim 1, 2, or 4, characterized in that: The positioning assembly includes a first arc-shaped indicator rod (8) and an arc-shaped support plate (9). One side of the first arc-shaped indicator rod (8) is fixedly installed on the side of the support ring (5) away from the hole-type grouting box (4). One side of the arc-shaped support plate (9) is fixedly installed on the side of the hole-type grouting box (4). The first arc-shaped indicator rod (8) is fixedly connected to the holding column (6). A second arc-shaped indicator rod (10) is fixedly connected on the side of the arc-shaped support plate (9) away from the hole-type grouting box (4). The second arc-shaped indicator rod (10) is movably connected to the first arc-shaped indicator rod (8). A first screw (11) is threadedly connected to the inside of the arc-shaped support plate (9). The first screw (11) is threadedly connected to the support ring (5).

6. The grouting device for foundation pit karst area according to claim 3, characterized in that: The positioning assembly includes a first arc-shaped indicator rod (8) and an arc-shaped support plate (9). One side of the first arc-shaped indicator rod (8) is fixedly installed on the side of the support ring (5) away from the hole-type grouting box (4). One side of the arc-shaped support plate (9) is fixedly installed on the side of the hole-type grouting box (4). The first arc-shaped indicator rod (8) is fixedly connected to the holding column (6). A second arc-shaped indicator rod (10) is fixedly connected on the side of the arc-shaped support plate (9) away from the hole-type grouting box (4). The second arc-shaped indicator rod (10) is movably connected to the first arc-shaped indicator rod (8). A first screw (11) is threadedly connected to the inside of the arc-shaped support plate (9). The first screw (11) is threadedly connected to the support ring (5).

7. The grouting device for foundation pit karst area according to claim 1, 2, 4 or 6, characterized in that: The toilet cleaning assembly includes an outer box panel (28), the rear side of which is fixedly installed on the front side of the inner box panel (30), and a handle (15) is fixedly connected to the front side of the outer box panel (28).

8. The grouting device for foundation pit karst area according to claim 5, characterized in that: The toilet cleaning assembly includes an outer box panel (28), the rear side of which is fixedly installed on the front side of the inner box panel (30), and a handle (15) is fixedly connected to the front side of the outer box panel (28).

9. The grouting device for foundation pit karst area according to claim 1, 2, 4, 6 or 8, characterized in that: The limiting component includes a positioning column (25) and a positioning plate (18). The front end of the positioning column (25) is fixedly installed on the rear side of the outer box plate (28), and the rear side of the positioning plate (18) is fixedly installed on the front side of the perforated grouting box (4). The positioning column (25) is movably installed inside the box of the perforated grouting box (4), and the positioning plate (18) is movably connected to the outer box plate (28).

10. A grouting device for karst areas of foundation pits according to claim 9, characterized in that: The fixing assembly includes a second support pole (16) and a first support pole (12). One side of the second support pole (16) is fixedly installed on one side of the outer box plate (28), and one side of the first support pole (12) is fixedly installed on one side of the open grouting box (4). A limiting rod (29) is fixedly connected to the rear side of the second support pole (16). The limiting rod (29) is movably installed inside the first support pole (12). A second screw (17) is threadedly connected inside the second support pole (16). The second screw (17) is threadedly connected to the first support pole (12). There are two first support poles (12). The top of one first support pole (12) is fixedly connected to the bottom of the handrail (19).

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