Environment-friendly pressure grouting device for grounding

Abstract

This invention discloses an environmentally friendly pressure grouting device for grounding, belonging to the technical field of power grounding devices. The application includes a base with several pile holes for fixing to the bottom surface, and a guide hole for guiding the grouting pipe. A positioning assembly is disposed on the base, including a support ring with several support rods connected to it. A positioning ring is connected to the upper end of each support rod. The positioning ring has an opening of at least one-quarter arc. Two positioning plates are symmetrically arranged on the inner ring of the positioning ring, and the intersection of the vertical lines of the two positioning plates coincides with the center of the guide hole. This invention effectively improves the installation efficiency of the grouting pipe and assists in positioning and clamping the grouting pipe during the grouting process, preventing displacement due to internal pressure changes and improving the overall grouting quality.

Description

Technical Field

[0001] This invention relates to an environmentally friendly pressure grouting device for grounding, belonging to the technical field of power grounding devices. Background Technology

[0002] In power systems, grounding technology is an electrical engineering technology that ensures the safe operation of power equipment. In order to ensure that the resistance value in the soil layer reaches the predetermined standard, in the specific construction process, it is usually necessary to inject the corresponding resistance-reducing grout into the soil layer to adjust the soil environment in the soil layer, so as to form a continuous low-impedance conductive path, thereby ensuring that the fluctuation error of the grounding resistance value is within a reasonable range.

[0003] In existing technologies, grouting pipes are typically used with the assistance of an air compressor to inject grout for drag reduction into the soil layer. First, holes are drilled in the area where grouting is needed, and then the grouting pipe is inserted into the pre-drilled grouting hole. During the installation of the grouting pipe, a corresponding support frame is usually erected at the drilling location to assist in the installation and fixation. Each time the support frame is erected, it needs to be repositioned according to the grouting hole. Furthermore, during the insertion of the grouting pipe, the coaxiality between the grouting pipe and the grouting hole needs to be repeatedly adjusted to ensure that the grouting pipe is successfully inserted into the grouting hole. This results in a significant reduction in overall construction efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an environmentally friendly pressure grouting device for grounding, which solves the problem of low installation efficiency of grouting pipes and the need for repeated coaxiality adjustment in the prior art.

[0005] The technical problem to be solved by the present invention is achieved by the following technical solution: an environmentally friendly pressure grouting device for grounding, including a base, wherein a plurality of pile holes for fixing to the bottom surface are provided on the base, and a guide hole is provided in the base for guiding the grouting pipe; A positioning component is disposed on the base. The positioning component includes a support ring, a plurality of support rods are connected to the support ring, and a positioning ring is connected to the upper end of the support rods. The positioning ring has an opening of at least a quarter arc. Two positioning plates are symmetrically arranged in the inner circle of the positioning ring, and the intersection point of the vertical lines of the two positioning plates coincides with the center of the guide hole.

[0006] By adopting the above technical solution, the installation efficiency of the grouting pipe can be effectively improved. Simultaneously, it assists in positioning and clamping the grouting pipe during the grouting process, preventing displacement due to internal pressure changes and improving the overall grouting quality. During installation, the entire base is first fixed at the grouting hole position. After aligning the guide hole with the grouting hole coaxially, the grouting pipe is lifted above the grouting hole using external suspension equipment. During the controlled descent of the grouting pipe, two positioning plates are used to engage with the pipe, ensuring the pipe's axis coincides with the grouting hole, allowing for rapid insertion. Furthermore, the symmetrical triangular arrangement of the two positioning plates enables positioning and guidance of grouting pipes of different sizes, making it widely applicable.

[0007] The invention is further configured such that: a through groove is provided on the positioning plate, a limiting plate is slidably engaged in the through groove, the two limiting plates are symmetrically arranged, a push rod is rotatably connected to the tail end face, and an adjusting rod is threadedly connected to the other end of the push rod. The adjusting rod passes through the positioning ring and is rotatably engaged on the positioning ring.

[0008] By adopting the above technical solution, the clamping hole diameter of the grouting pipe can be adjusted. For grouting pipes with different hole diameters, their central axis can be made to coincide with the guide hole, so that there is no need to adjust the positional relationship between the guide hole and the base, which facilitates the subsequent installation of the grouting pipe.

[0009] The present invention is further configured such that: a guide rod is provided between the limiting plate and the positioning ring, and a pressure spring that is always in a compressed state is sleeved on the guide rod.

[0010] By adopting the above technical solution, the internal preload generated by the pressure spring can effectively improve the stability of the entire limiting plate, so that the limiting plate does not vibrate when limiting the grouting pipe, thereby improving the accuracy of the grouting pipe installation.

[0011] The present invention is further configured such that: a pressure sensor is provided between the end of the pressure spring and the limiting plate, and the pressure sensor is electrically connected to a signal processing module.

[0012] By adopting the above technical solution, the pressure sensor monitors the internal pre-tightening force in real time. Based on Hooke's Law, the signal processing module can convert the pressure value detected by the sensor into the movement value of the limiting plate, thereby accurately determining the specific position of the limiting plate and ensuring that the two symmetrically arranged moving plates can always maintain mutual symmetry and limit the grouting pipe to be inserted to the coaxial position of the grouting hole.

[0013] The present invention is further configured such that: the inner ring of the base is provided with a plurality of base plates, and a support plate is rotatably connected to the base plate; a support block is provided at the end of the support plate; and the plurality of support plates can clamp and fix the grouting pipe after rotating toward the center of the base.

[0014] By adopting the above technical solution, the subsequent grouting pipe can be fixed and clamped during the grouting process, thereby preventing the grouting pipe from moving up and down due to internal pressure during the grouting process.

[0015] The invention is further configured such that: an adjustment groove is provided on the base plate, a cylindrical adjustment block is slidably engaged in the adjustment groove, an angle adjustment screw is connected to the adjustment block, the other end of the angle adjustment screw passes through the tensioning plate and a knob head is provided at the end, and the angle adjustment screw and the tensioning plate are threaded together.

[0016] By adopting the above technical solution, the angle adjustment screw is driven by rotating the knob head, thereby adjusting the tightening angle according to the different diameters of the grouting pipe. At the same time, by utilizing the transmission characteristics of the threaded pair, the construction personnel can adjust the tightening angle more precisely.

[0017] The present invention is further configured such that the tensioning block and the end of the tensioning plate are rotatably connected.

[0018] By adopting the above technical solution, it is possible to ensure that the tensioning block has a relatively large contact surface when it is in contact with the outer surface of the grouting pipe, and the tensioning block can rotate autonomously according to the contact angle to adapt to grouting pipes with different hole diameters.

[0019] The present invention is further configured such that an anti-slip layer is provided on the contact surface between the tensioning plate and the grouting pipe.

[0020] By adopting the above technical solution, the clamping force of the support plate on the grouting pipe can be effectively improved.

[0021] The present invention is further configured such that: the outer surface of the support ring is provided with threads, the middle part of the base is provided with a threaded groove, and the support ring and the base are connected by threads.

[0022] By adopting the above technical solution, the stability of the connection between the base and the support ring can be effectively improved, while facilitating subsequent disassembly and assembly. On the other hand, after the base is fixed to the grouting hole position by the foundation pile, the base and foundation pile can be further tightened by using a threaded knob between the support ring and the base, thereby improving the stability of the base.

[0023] The present invention is further configured such that: a clamping plate is rotatably connected to the end of the positioning ring, the other end of the clamping plate is a free end, a fixing rod is provided on the free end of the clamping plate, a fixing head is provided at the bottom of the fixing rod, and a fixing spring is provided on the fixing rod section between the fixing head and the clamping plate.

[0024] By adopting the above technical solution, the clamping plate is controlled to clamp the grouting pipe inserted into the grouting hole, and the two positioning plates can quickly limit the position of the grouting pipe. At the same time, the fixing rod at the end of the clamping plate can abut against the upper surface of the support ring, so that the free end of the clamping plate is limited.

[0025] The beneficial effects of this invention are: The base positioning component allows for the positioning and clamping of the grouting pipe during insertion into the grouting hole, eliminating the need for repeated installation supports and effectively improving installation efficiency. Simultaneously, it clamps and fixes the grouting pipe during grout pouring, preventing it from being pushed out of the grouting hole due to internal grout pressure and ensuring grouting stability.

[0026] The device uses two symmetrically arranged positioning plates and a limiting plate to adjust the clamping position of the limiting plate according to the grouting pipe with different hole diameters. This ensures that the axis of the grouting pipe always coincides with the guide hole in the middle of the base, making it suitable for grouting pipes with various hole diameters.

[0027] By using a pressure spring, the pressure reading is converted into the distance between the outward extension of the limit plates, allowing for a direct observation of the relative positions of the two limit plates and facilitating subsequent adjustment of the limit plates by construction personnel.

[0028] By using foundation piles for positioning and fixing, and then connecting the support ring with the threaded groove of the base, the entire base can be kept in a relatively horizontal installation state, ensuring that the grouting pipe can remain vertical when subsequently inserted. On the other hand, the horizontally suspended base can eliminate the influence of ground undulations on the installation posture of the base, making the base suitable for uneven surfaces and thus having a wider range of applications. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the positioning component of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the base of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the limiting plate of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the clamping plate of the present invention; Figure 6 This is a three-dimensional structural diagram of the grouting pipe and depth adjustment piston of the present invention.

[0030] In the diagram: 1. Base; 101. Pile hole; 102. Threaded groove; 2. Guide hole; 3. Positioning assembly; 301. Support ring; 302. Support rod; 303. Positioning ring; 304. Positioning plate; 305. Limiting plate; 306. Push rod; 307. Guide rod; 308. Adjusting rod; 309. Pressure spring; 4. Base plate; 401. Adjusting groove; 5. Tensioning plate; 6. Tensioning block; 7. Angle adjusting screw; 701. Knob head; 8. Clamping plate; 9. Fixing rod; 10. Fixing head; 11. Grouting pipe; 111. Snap-fit ​​groove; 12. Adjusting block; 13. Rolling bearing; 14. Adjusting screw; 15. Depth adjusting piston; 16. End cap; 17. Connecting head. Detailed Implementation

[0031] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this invention, the invention will be further described below in conjunction with specific illustrations.

[0032] like Figure 1 As shown, an environmentally friendly pressure grouting device for grounding includes a base 1, which is annular. A guide hole 2 is concentrically arranged on the inner ring of the base 1. An annular threaded groove 102 is provided on the annular base 1. Several pile holes 101 are equidistantly arranged on the inner circumference of the threaded groove 102. During the installation of the base 1, the base 1 is pre-fixed by aligning the guide hole 2 with the pre-drilled grouting hole and then inserting the corresponding pile into the pile hole 101.

[0033] A positioning component 3 is connected above the base 1 via a threaded groove 102. The positioning component 3 includes a support ring 301. The outer ring of the support ring 301 is provided with an external thread. The support ring 301 is turned into the threaded groove 102 through the external thread. During the process of the support ring 301 and the threaded groove 102 turning each other, it can abut against the upper end of the foundation pile inserted into the foundation pile hole 101. As the support ring 301 continues to rotate into the threaded groove 102, the entire base 1 rises relative to the foundation pile. Finally, after the foundation pile is clamped and abutted by the bottom surface of the threaded groove 102 and the lower surface of the support ring 301, the installation of the support ring 301 is completed.

[0034] By adopting the above installation method, the entire base 1 can be suspended relative to the ground after being fixed, thereby ensuring that the entire base 1 is set horizontally, so that the base 1 can be stably installed and erected even on uneven ground.

[0035] It should be noted that in the above installation method, the upper end of each foundation pile must be kept on the same horizontal plane at the same height, that is, the insertion depth of each foundation pile must be relatively consistent.

[0036] At least three support rods 302 are equidistantly arranged on the circumference of the support ring 301. A positioning ring 303 is fixedly connected to the upper end of the support rod 302. The entire positioning ring 303 has an opening of at least a quarter arc. Two positioning plates 304 are connected between the two ends of the opening of the positioning ring 303 and the center point of the arc of the positioning ring 303. The intersection of the vertical lines of the two positioning plates 304 coincides with the center of the guide hole 2.

[0037] With the above-described structure, during the installation of the grouting pipe 11, after the base 1 is quickly installed to the grouting hole position, the positioning component 3 can be used to quickly position the grouting pipe 11, improving the installation efficiency of the grouting pipe 11. This ensures that the grouting pipe 11 maintains stable coaxiality during insertion into the grouting hole, preventing tilting of the grouting pipe 11 during insertion, which could lead to deviations and varying degrees of blockage of the grout discharge holes on the outer wall of the grouting pipe 11, thus affecting the grouting efficiency.

[0038] like Figure 2 As shown, through slots are provided on both positioning plates 304. Limiting plates 305 are slidably engaged in the through slots. During construction, the operator can adjust the position of the limiting plates 305 in the through slots to adjust the diameter of the grouting pipe 11 to be clamped and limited. When the diameter of the grouting pipe 11 is large, the limiting plates 305 are controlled to shrink towards the inside of the through slots, thereby increasing the distance between the two limiting plates 305. This ensures that the axis of the grouting pipe 11 can coincide with the center of the guide hole 2 during installation, which facilitates subsequent installation and positioning.

[0039] Specifically, such as Figure 3 As shown, two limiting plates 305 are symmetrically arranged. A push rod 306 is rotatably connected to the outer end face of the limiting plate 305. The other end of the push rod 306 is threadedly connected to an adjusting rod 308. The end of the adjusting rod 308 passes through the positioning ring 303 and extends to the outer ring of the positioning ring 303, where it is rotatably connected. By rotating the adjusting rod 308, the push rod 306, which is threaded into the adjusting rod 308, can extend and retract, thereby pushing the limiting plate 305 to slide within the through groove. On the other hand, by opening an internal threaded cavity in the adjusting rod 308 to connect with the push rod 306, when the limiting plate 305 is moved laterally by the adjusting rod 308, the space required for the push rod 306 to slide can be effectively reduced. At the same time, the adjusting rod 308 does not need to rotate axially or slide laterally, making the lateral adjustment space of the entire limiting plate 305 smaller, the structure more compact, and the stability higher during adjustment.

[0040] Based on the above embodiment, an abutment rod is rotatably provided on the end face of the limiting plate 305 that is in contact with the grouting pipe 11. By rotating the abutment rod provided on the push plate, when the grouting pipe 11 sinks into the grouting hole, it can be aligned with the outer surface of the grouting pipe 11 for positioning, while generating relative rolling, thereby reducing the frictional resistance on the outer wall of the grouting pipe 11 and improving the insertion and installation efficiency of the grouting pipe 11.

[0041] like Figure 3 As shown, a guide rod 307 is provided between the limiting plate 305 and the positioning ring 303, and a pressure spring 309 that is always in a compressed state is sleeved on the guide rod 307. The internal preload generated by the pressure spring 309 can effectively improve the stability of the entire limiting plate 305, so that the limiting plate 305 does not vibrate when limiting the grouting pipe 11, thereby improving the accuracy of the installation of the grouting pipe 11.

[0042] Based on the above embodiment, a pressure sensor is further provided between the end of the pressure spring 309 and the limiting plate 305, and the pressure sensor is electrically connected to a signal processing module. The pressure sensor monitors the internal preload force in real time, and the signal processing module, based on Hooke's Law, converts the pressure value detected by the pressure sensor into the movement value of the limiting plate 305, thereby accurately determining the specific position of the limiting plate 305. This ensures that the two symmetrically arranged moving plates always maintain mutual symmetry and limit the grouting pipe 11 to be inserted to the coaxial position of the grouting hole.

[0043] Specifically, by rotating the adjusting rod 308, the pushing rod 306 slides along the straight direction of the adjusting rod 308, thereby pushing the limiting plate 305 to extend outward or retract inward. The pressure sensor monitors the pressure applied by the pressure spring 309 in real time, thereby measuring the lateral movement distance of the limiting plate 305. During this process, when the limiting plate 305 retracts inward, the compression of the pressure spring 309 increases, and the pressure reading detected by the pressure sensor continuously increases. Since the elastic coefficient of the pressure spring 309 is a fixed value, the pressure reading of the pressure sensor is positively correlated with the lateral movement distance of the limiting plate 305 as it retracts inward. That is, the distance that the limiting plate 305 slides when it retracts inward can be reflected by the difference between the two readings of the pressure sensor.

[0044] With the above-mentioned structure, the relative position of the limiting plate 305 is reflected by the pressure reading change of the pressure sensor. Compared with the traditional displacement sensor, it has higher stability and monitoring accuracy, and is real-time. There is no need to worry about errors caused by external obstacles during construction, making it more suitable for field construction environments. At the same time, with the setting of the pressure spring 309, a pre-tightening force is always applied to the limiting plate 305 to push it outward, so that the limiting plate 305 can always remain stable and not vibrate. This results in higher accuracy for the subsequent limiting and clamping of the grouting pipe 11.

[0045] like Figure 4 As shown, the inner ring of the base 1 is also provided with several base plates 4, and a support plate 5 is rotatably connected to the base plate 4. The end of the support plate 5 is provided with a support block 6. After the multiple support plates 5 rotate toward the middle of the base 1, they can clamp and fix the grouting pipe 11. This allows the grouting pipe 11 to be fixed and clamped during the subsequent grouting process, thereby preventing the grouting pipe 11 from moving up and down due to internal pressure during the grouting process.

[0046] Specifically, the base plate 4 has an adjustment groove 401, in which a cylindrical adjustment block 12 is slidably engaged. An angle adjustment screw 7 is connected to the adjustment block 12. The other end of the angle adjustment screw 7 passes through the tensioning plate 5 and has a knob head 701 at its end. The angle adjustment screw 7 and the tensioning plate 5 are threaded together. The tensioning block 6 is rotatably connected to the end of the tensioning plate 5. By rotating the knob head 701 to drive the angle adjustment screw 7, the position of the adjustment block 12 within the adjustment groove 401 can be controlled using the transmission characteristics of the threaded joint, thereby achieving precise control of the angle of the tensioning block 6 or other connecting components.

[0047] like Figure 5 As shown, a set of rolling bearings 13 are symmetrically arranged at both ends of the adjusting block 12. The two rolling bearings 13 are respectively slidably engaged with the inner walls of the two sides of the adjusting groove 401. The entire adjusting block 12 can slide along the length direction of the adjusting groove 401. At the same time, due to the arrangement of the rolling bearings 13, the sliding of the adjusting block 12 can be smoother, and the frictional resistance generated relative to the adjusting groove 401 is smaller, which can prevent jamming during the adjustment process.

[0048] In the above embodiment, an anti-slip layer is provided on the contact surface between the clamping block 6 and the grouting pipe 11. This effectively improves the clamping force of the clamping block 6 on the grouting pipe 11.

[0049] The positioning ring 303 is rotatably connected to a clamping plate 8 at one end. The other end of the clamping plate 8 is a free end, and an abutment rod is provided on the free end of the clamping plate 8. An abutment joint is provided at the bottom of the abutment rod, and an abutment spring is provided on the abutment rod section between the abutment joint and the clamping plate 8. The clamping plate 8 is controlled to clamp the grouting pipe 11 inserted into the grouting hole, and with the cooperation of the two positioning plates 304, the grouting pipe 11 can be quickly limited. At the same time, the abutment rod at the end of the clamping plate 8 can abut against the upper surface of the support ring 301, so that the free end of the clamping plate 8 is limited.

[0050] During grouting, the grout is pressurized into the grouting pipe 11 by an external air compressor. As the grout flows downwards through the pipe, it diffuses outwards into the soil layer through through-holes in the pipe wall after filling the pipe 11. In this embodiment, the grout used is a conductive, dispersible, and fluid filler, which is a mixture of polysaccharide derivatives and mineral gelling agents. It can significantly improve the dispersibility, suspension stability, and flowability of solid particles in the grout under pressure grouting conditions in complex formations, enabling the grout to form a uniform and continuous conductive path within the grouting hole. This achieves low corrosion, low water separation, high uniformity, and more stable grounding resistance reduction effects, making it particularly suitable for deep well grouting and high-resistivity formations.

[0051] Furthermore, based on the above embodiments, before the grouting pipe 11 is installed, a non-conductive grout coating is applied to the inner wall of the grounding grouting pipe 11 to achieve high dispersibility, low friction, low deposition, and stable long-distance transport of the grout during the transportation process. This can significantly reduce boundary shear resistance, suppress particle flocculation caused by pressure changes during grouting, and improve grouting efficiency. It is particularly suitable for grounding projects of deep well high-pressure grouting, and is both environmentally friendly and adaptable.

[0052] like Figure 6 As shown, at least one snap-fit ​​groove 111 is provided on the inner wall of the grouting pipe 11. A depth adjustment piston 15 is slidably mounted through the snap-fit ​​groove 111, and an adjustment screw 14 is threadedly connected to the middle of the depth adjustment piston 15. Both the adjustment screw 14 and the depth adjustment piston 15 need to be installed before the grouting pipe 11 is inserted into the grouting hole. During the grouting process, the pressure of the grout injected into the grouting pipe 11 changes with depth; the deeper the grout, the greater the pressure. To control the distribution of grout in the formation, the grouting pressure needs to be continuously controlled. By providing a slidable depth adjustment piston 15 inside the grouting pipe 11, grouting at different pressures for formations at different depths can be achieved.

[0053] Specifically, an end cap 16 is fixedly installed at the upper end of the grouting pipe 11. The end cap 16 and the grouting pipe 11 can be connected by threaded connection or riveting. The adjusting screw 14 passes through the end cap 16 and is connected to a drive motor (not shown) at the end. The drive motor can drive the adjusting screw 14 to rotate relative to the grouting pipe 11 and the end cap 16, thereby controlling the position of the depth adjusting piston 15 in the grouting pipe 11. This allows the grouting height of the grout to be adjusted during the grouting process, which is convenient for adjusting the corresponding grouting volume to control the resistance of the formation.

[0054] Furthermore, a connector 17 connected to an external air compressor pipeline is installed on the end cap 16, through which grout can be injected into the grouting pipe 11.

[0055] It should be noted that the entire grouting process begins at the bottom of the grouting pipe 11. The depth of the depth adjusting piston 15 is then controlled to sequentially grout layers at different depths upwards. During the upward movement of the depth adjusting piston 15, some grout within the formation will be drawn out due to the generated negative pressure. Therefore, the grouting volume should be appropriately increased during the grouting process. After grouting is completed, the depth adjusting piston 15 rises to its highest point. At this point, it needs to be lowered back down to the lowest point of the grouting pipe 11 to adjust the pressure at the bottom of the grouting pipe 11 to a normal state, while simultaneously injecting some grout back into the formation. During the descent, the upper end of the grouting pipe 11 must remain connected to the external environment to maintain a constant internal air pressure with the external atmospheric pressure. After the entire grouting process is completed, the grouting pipe 11 is withdrawn from the grouting hole, and the remaining grout inside the grouting pipe 11 is discharged by driving the depth adjusting piston 15 again.

[0056] By adopting the above grouting method, the entire grounding project becomes more environmentally friendly. It can independently adjust the amount of grout at each depth, and after grouting is completed, the entire grouting pipe 11 can be recycled and reused. At the same time, the grout in the grouting pipe 11 can be quickly discharged and collected through the depth adjustment piston 15 for subsequent filling of the grouting holes, which can effectively control the amount of grout used and reduce grout waste.

[0057] 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, and various changes and modifications can be made without departing from the spirit and scope of the invention, all of which fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly pressure grouting device for grounding, characterized in that, include: The base (1) has a plurality of pile holes (101) for fixing to the bottom surface. The base (1) is provided with guide holes (2) for guiding the grouting pipe (11). A positioning component (3) is disposed on the base (1). The positioning component (3) includes a support ring (301). Several support rods (302) are connected to the support ring (301). A positioning ring (303) is connected to the upper end of the support rods (302). The positioning ring (303) has an opening of at least one-quarter arc. Two positioning plates (304) are symmetrically arranged in the inner circle of the positioning ring (303). The intersection of the vertical lines of the two positioning plates (304) coincides with the center of the guide hole (2).

2. The environmentally friendly pressure grouting device for grounding according to claim 1, characterized in that: The positioning plate (304) has a through groove, and a limiting plate (305) is slidably engaged in the through groove. The two limiting plates (305) are symmetrically arranged, and a push rod (306) is rotatably connected to the tail end face. An adjusting rod (308) is threadedly connected to the other end of the push rod (306). The adjusting rod (308) passes through the positioning ring (303) and is rotatably engaged in the positioning ring (303).

3. The environmentally friendly pressure grouting device for grounding according to claim 2, characterized in that: A guide rod (307) is provided between the limiting plate (305) and the positioning ring (303), and a pressure spring (309) that is always in a compressed state is sleeved on the guide rod (307).

4. The environmentally friendly pressure grouting device for grounding according to claim 3, characterized in that: A pressure sensor is provided between the end of the pressure spring (309) and the limiting plate (305), and the pressure sensor is electrically connected to a signal processing module.

5. The environmentally friendly pressure grouting device for grounding according to claim 1, characterized in that: The inner ring of the base (1) is also provided with several base plates (4), and a support plate (5) is rotatably connected to the base plate (4). A support block (6) is provided at the end of the support plate (5). After the multiple support plates (5) rotate toward the middle of the base (1), they can clamp and fix the grouting pipe (11).

6. The environmentally friendly pressure grouting device for grounding according to claim 5, characterized in that: An adjustment groove (401) is provided on the base plate (4). A cylindrical adjustment block (12) is slidably engaged in the adjustment groove (401). An angle adjustment screw (7) is connected to the adjustment block (12). The other end of the angle adjustment screw (7) passes through the support plate (5) and a knob head (701) is provided at the end. The angle adjustment screw (7) and the support plate (5) are connected by a thread.

7. The environmentally friendly pressure grouting device for grounding according to claim 5, characterized in that: The support block (6) and the end of the support plate (5) are rotatably connected.

8. The environmentally friendly pressure grouting device for grounding according to claim 5, characterized in that: An anti-slip layer is provided on the mating surface of the support plate (5) and the grouting pipe (11).

9. The environmentally friendly pressure grouting device for grounding according to claim 1, characterized in that: The outer ring surface of the support ring (301) is provided with threads, and the base (1) has a threaded groove (102) in the middle. The support ring (301) and the base (1) are connected by threads.

10. The environmentally friendly pressure grouting device for grounding according to claim 1, characterized in that: The positioning ring (303) is rotatably connected to a clamping plate (8) at one end. The other end of the clamping plate (8) is a free end. A fixing rod (9) is provided on the free end of the clamping plate (8). A fixing head (10) is provided at the bottom of the fixing rod (9). A fixing spring is provided on the section of the fixing rod (9) between the fixing head (10) and the clamping plate (8).

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