Equipment for modular in-situ soil injection remediation using digital control systems

Abstract

The present invention discloses equipment for realizing modular in-situ soil injection repair by using a digital control system, comprising a carrier and an injection mechanism arranged on the carrier; the injection mechanism can be used to inject medicine into the soil deep underground for repair; during the repair process, the second sleeve in the injection mechanism can be rotated and cooperated with the jacking mechanism to loosen the compacted soil outside the channel drilled by the drill bit, thereby expanding the medicine injection area and accelerating the diffusion of the medicine and the fusion with the soil; at the same time, the first sleeve can protect the second through hole from being blocked, and keep the medicine injection unobstructed, and adopt single-hole continuous dynamic fixed-depth injection, and the medicine injection parameters can be accurately controlled by controlling and optimizing the medicine addition parameters; the small-caliber bottom-up injection method solves the problem of sandwich layer repair, and at the same time has the advantage of maintaining the bearing capacity of the foundation after construction, and the diffusion and injection effect of the medicine can be guaranteed by designing air, medicine nozzles and drilling tools.

Description

Technical Field

[0001] The invention belongs to the technical field of soil remediation, and in particular relates to equipment for realizing modular in-situ soil injection remediation by adopting a digital control system. Background Art

[0002] At present, soil remediation technologies include spraying and injecting agents. Among them, in-situ injection - high-pressure rotary jet injection remediation technology (referred to as high-pressure rotary jet technology) is a soil remediation technology that has recently emerged in the field of in-situ chemical oxidation / reduction remediation. According to existing technologies, during the operation, the predetermined depth of the soil layer is first entered through a drilling hole, and the prepared agent is sprayed out from the nozzle along the grouting pipe under the action of a high-pressure grouting pump and compressed air, so that the oxidizing agent is fully mixed with the contaminated soil, and the pollutants are decomposed by oxidation to achieve the purpose of remediation. After the injection is completed, the liquid medicine will further migrate and diffuse in the aquifer, and the soil permeability and construction period determine the final diffusion radius of the liquid medicine.

[0003] Compared with other injection / injection technologies, high-pressure rotary jetting technology is applicable to a wider range of soil layers, which can be extended from high-permeability sand layers to low-medium permeability strata (such as silt, silty clay, etc.), and is also applicable to single soil or groundwater, soil-water composite pollution and other situations; At present, the injection pressure of high-pressure rotary jetting technology is 1.0-5.0 times that of existing technologies such as injection wells and deep mixing; The effective diffusion radius of the agent is 0.5-4 times that of the existing technology, especially for the repair of saturated sand layers, it has a large diffusion radius, and completes the single-hole continuous injection operation at one time, which is convenient to implement. At the same time, the repair depth of high-pressure rotary jetting technology can reach up to 5-10m, and the effective diffusion radius of the agent is 0.5-1.5m; The injection flow rate is 2-3.5 times that of the existing technology, and the processing capacity of a single set of equipment: soil remediation is 500-900m³ / d, and the usual repair depth is mostly 0.5-4m depending on the soil pollution situation;

[0004] After searching, the prior art announcement number is CN 217665399 U. The present invention discloses an in-situ injection device and system for preparing a compound agent, wherein the in-situ injection device includes an outer tube and an inner tube inserted into the outer tube, the outer tube and the inner tube are both hollow tube structures, and a drill bit is provided at the bottom of the outer tube; the lower part of the outer tube is provided with a drug mixing chamber and an injection chamber that are interconnected from top to bottom, and the outer tube is connected to the inner tube through the drug mixing chamber. The present invention forms two independent transmission channels for conveying two different agents by providing an inner tube and an outer tube, and provides a drug mixing chamber at the end of the independent transmission channel so that the two agents are mixed to form a compound agent, and the compound agent is injected into the soil from the injection chamber, thereby avoiding the weakening of the oxidizability of the compound agent due to the long conveying time in the prior art, improving the construction efficiency and the use efficiency of the agent, and enhancing the soil remediation effect;

[0005] The disadvantage is that the loose soil that is conducive to the injection and fusion of the agent is limited to the channel drilled by the drill bit, and the soil outside the channel is still in a solidified and compacted state, which is not conducive to the fusion of the repair agent. The diffusion speed of the agent is slow and the diffusion range is greatly limited. Even after the agent is injected, the diffusion and fusion of the agent will be slow due to the compacted soil and cannot achieve the ideal effect.

[0006] After searching, an in-situ high-pressure rotary jet injection repair device with a publication number of CN215745476U is found, which includes a liquid storage pipe, a high-pressure grouting pipe and a drill bit, wherein the high-pressure grouting pipe is installed between the liquid storage pipe and the drill bit, and the high-pressure grouting pipe and the liquid storage pipe are interconnected, the circumferential side wall of the high-pressure grouting pipe is provided with spray holes distributed in a ring array, the lower section of the circumferential side wall of the liquid storage pipe is provided with a filling port, and a driving motor is fixedly installed at the top of the liquid storage pipe, the output shaft of the driving motor passes through the top of the liquid storage pipe, and extends to the inside of the liquid storage pipe and is fixedly connected with a rotating sleeve;

[0007] After searching, a new type of push-type in-situ injection drill bit with the announcement number CN210208082U includes an injection tube, a drill body and a connecting tube, wherein the connecting tube is fixedly installed at one end of the injection tube, the drill body is located at the end of the injection tube away from the connecting tube, and is detachably connected to the injection tube, and an injection hole is opened on the outer wall of the end of the injection tube close to the drill body; further, in addition to the above-mentioned disadvantages, the injection hole in the present technical solution is also easily blocked by the soil when rotating and diving in the soil, so that the injection process cannot proceed smoothly;

[0008] The above two prior arts also have the above disadvantages;

[0009] After searching, it was also found that the prior art with publication number CN113305141A discloses a device that uses a crawler mobile device equipped with a vertical drill arm to implement chemical injection, thereby achieving in-situ oxidation remediation of the soil. The crawler mobile device is easy to move. In combination with the above-mentioned prior art and in view of the above shortcomings, the present invention provides a soil in-situ injection remediation device. Summary of the invention

[0010] The purpose of the present invention is to overcome the deficiencies in the prior art and provide equipment for modular in-situ soil injection repair using a digital control system. The present invention can inject chemicals into the soil deep underground for repair through an injection mechanism. During the repair process, the second sleeve in the injection mechanism can be rotated and cooperated with the jacking mechanism to loosen the compacted soil outside the channel drilled by the drill bit, thereby expanding the agent injection area and accelerating the diffusion of the agent and its fusion with the soil. At the same time, the first sleeve can protect the second through hole from blockage and keep the agent injection unobstructed. A single-hole continuous dynamic fixed-depth injection is adopted, and the agent injection parameters can be precisely controlled by controlling and optimizing the agent addition parameters. The small-caliber bottom-up injection method solves the problem of sandwich layer repair and has the advantage of maintaining the bearing capacity of the foundation after construction. The diffusion and injection effects of the agent can be guaranteed by designing air, agent nozzles and drilling tools.

[0011] In order to achieve the above object, the technical solution adopted by the present invention is:

[0012] Equipment for modular in-situ soil injection repair using a digital control system, including an injection mechanism;

[0013] The injection mechanism includes a mounting seat, a first mounting plate, a second mounting plate, a first sleeve, a drill bit, a second sleeve, a second gear disc, a first hydraulic motor, a first transfer box, a second transfer box, a pushing mechanism, a second sleeve, a first support plate, a second hydraulic motor, a medicine feed pipe, an air intake pipe, a first drill rod, a second drill rod, and a second support plate; the first mounting plate and the second mounting plate are fixed to the mounting seat, the mounting seat is threadedly connected to the lead screw, the mounting seat is slidably connected to the first guide shaft, the first hydraulic motor and the second gear disc are arranged on the second mounting plate, the output shaft of the first hydraulic motor is provided with a gear and meshes with the second gear disc, the first drill rod is rotatably connected to the first mounting plate and the second mounting plate, the first drill rod is provided with teeth and meshes with the second gear disc, the first A transfer box and a second transfer box are fixed on the outer wall of the first drill rod; the first transfer box includes a first ring box fixedly connected to the outer wall of the first drill rod, a second cover plate rotatably connected is provided on the first ring box, a sealing gasket is provided between the second cover plate and the first ring box, a first fixed shaft is provided on the second cover plate and fixedly connected to the first mounting plate, a first connecting pipe is provided on the second cover plate, and the first connecting pipe is connected to the medicine tank for medicine intake; the second transfer box includes a second ring box fixedly connected to the outer wall of the first drill rod, a third cover plate rotatably connected is provided on the second ring box, a sealing gasket is provided between the third cover plate and the second ring box, a second fixed shaft is provided on the third cover plate and fixedly connected to the first mounting plate, and a second connecting pipe is provided on the third cover plate and connected to the air compressor for air intake.

[0014] A guide groove is arranged on the inner wall of the first drill rod, a first cover plate fixed with bolts is arranged on the top of the first drill rod, a first clamping ring is arranged at one end of the first drill rod, and a first limiting groove is arranged on the first clamping ring.

[0015] The second drill rod is provided with a second clamping ring, and the second clamping ring is provided with a second limiting groove.

[0016] The second sleeve has installation grooves at both ends, which fit the first clamping ring and the second clamping ring. The second sleeve has third limiting grooves at both ends, a second limiting shaft is provided at one end of the second sleeve, and a first through groove, a second through groove, and a second through hole are provided on the side wall of the second sleeve; a second gear ring is provided at the bottom of the second sleeve.

[0017] The pushing mechanism includes a fourth support plate, which is fixedly connected to the inner wall of the second sleeve, a third fixed shaft and a first oil cylinder are provided on the fourth support plate, the third fixed shaft is fixedly connected to the fourth support plate, the first oil cylinder base is rotatably connected to the third fixed shaft, a pushing shaft is provided on the top shaft of the first oil cylinder, the pushing shaft is arranged in the second through groove and slides through the first sleeve at the same time, a symmetrically arranged scraper is provided on the pushing shaft, the scraper is hingedly connected to the pushing shaft, a sleeved sleeve plate is provided at one end of the scraper, a hinged fixed block is provided at one end of the sleeve plate, and the fixed block is fixed on the first sleeve.

[0018] The specific injection method when used by the injection institution is as follows:

[0019] 1) Set the drilling distance according to the soil pollution situation to ensure that the radiation range can be connected or bordered in the process of dispersing radiation to the surroundings after the injection of the agent; then determine the drilling depth, and the preset depth can reach the bottom of the contaminated soil to ensure that the remediation liquid can be dispersed and radiated to the bottom of the contaminated soil; the injection depth of this injection mechanism is set between 0.5-4m;

[0020] 2) After the drill rod is vertically corrected, drilling is carried out, and attention should be paid to the stones inside the soil at any time so as to stop drilling in time to avoid damage to the drill bit and drill rod; the injection mechanism can be set up with multiple sets in parallel for drilling injection; the scattered radiation range of the agent after injection is within 0.5-1m, so the injection mechanism can be set at intervals of 0.8-1.5m, so that the radiation range of the agent between adjacent injection mechanisms can be adjacent or cross, ensuring that the repair effect can be more comprehensive;

[0021] 3) During the drilling process, before drilling, the second oil cylinder in the locking mechanism pushes the locking block to lock the first drill rod, the first casing, and the second drill rod to ensure that a complete and fixed drill rod is formed; then the first hydraulic motor drives the drill to the corresponding depth and stops; then the locking mechanism releases the locking state of the first drill rod, the second drill rod, and the first casing, so that the first casing can rotate alone;

[0022] 4) The second hydraulic motor drives the first casing and the second casing to rotate independently, and the first oil cylinder continuously pushes the ejection shaft while rotating, thereby driving the scraper and the sleeve plate to be gradually ejected. Therefore, when the first casing rotates, the scraper and the sleeve plate will loosen the hard soil around the borehole layer by layer, so as to improve the dispersion and radiation speed and quality of the repair agent;

[0023] 5) Before spraying the liquid medicine, the third hydraulic motor drives the second sleeve to rotate so that the first through hole and the second through hole overlap, so that the liquid medicine can be sprayed out smoothly; and after the liquid medicine is sprayed, the second sleeve is reset so that the first through hole and the second through hole are staggered again to avoid blockage after entering the soil;

[0024] 6) Liquid injection: high-pressure gas is provided by an external air compressor. Since the jet pipe is arranged inside the medicine inlet pipe and is connected to each other, the liquid medicine will produce a gas-liquid mixture under the action of the jet from the jet pipe when it is sprayed out, making the liquid medicine more evenly dispersed and the spraying force stronger;

[0025] 7) The locking mechanism then locks the first casing, the first drill rod, and the second drill rod, and then the drill bit is reversed to reset the injection mechanism out of the ground, and then transferred to the next injection point through the carrier.

[0026] The injection mechanism is arranged on the vehicle; the vehicle is provided with a cockpit, an air compressor, a medicine tank, an oil station, and a base; the base is provided with a fixing frame, the fixing frame is provided with an adjustment mechanism, the adjustment mechanism is provided with an injection mechanism, and a locking mechanism is provided inside the injection mechanism; the vehicle is driven in the cockpit, and the air compressor, medicine tank, and oil station provide high-pressure gas, injection repair liquid, and hydraulic power for the injection mechanism;

[0027] A first toothed ring and a number of evenly distributed protrusions are provided on the inner wall of the medicine tank, a medicine inlet and a third motor are provided on the top of the medicine tank, a medicine outlet is provided on the side wall of the medicine tank, a second rotating shaft is provided inside the medicine tank, and rotatably connected spline shafts are provided at both ends of the second rotating shaft, one set of spline shaft ends are provided with rotating gears and mesh with the first toothed ring, a slidably connected sleeve and a sleeved first spring are provided on the spline shaft, sprockets are provided at both ends of the sleeve, and the upper and lower corresponding sprockets are connected by chains; a chain plate is provided on the chain; and the first spring touches the second rotating shaft and the sprocket.

[0028] A horizontal plate is provided on the chain and is fixedly connected through a support leg, a vertical plate is provided on the horizontal plate, and an inclined plate is provided between the vertical plate and the horizontal plate; a support arm is provided between the sleeves, and the two ends of the support arm are rotatably connected to the sleeve, and a first top shaft is provided on the support arm, and a roller is provided at the end of the first top shaft and touches the inner wall of the medicine tank and the protrusion, and a second top shaft is provided at both ends of the support arm, and the two ends of the second top shaft touch the sprocket; the third motor shaft end is connected to the second rotating shaft and provides power for its rotation, thereby driving the spline shaft to rotate, thereby driving the chain plate and the inclined plate and the vertical plate to move back and forth up and down along the chain to achieve stirring of the medicine liquid, and at the same time, the first top shaft touches the protrusion and cooperates with the first spring and the second top shaft to drive the sleeve to move as a whole along the spline shaft to achieve up and down, left and right, and overall rotation stirring and mixing of the medicine liquid as the second rotating shaft as the axis.

[0029] The fixed frame is provided with a fixed first rotating shaft, one end of the first rotating shaft is rotatably connected to the base, the first rotating shaft is provided with a first gear plate, the base is provided with a first motor, the shaft end of the first motor is provided with a gear and meshes with the first gear plate, the fixed frame is provided with a fixed plate and a guide frame, and the fixed plates are arranged at both ends of the fixed frame.

[0030] The adjusting mechanism is arranged on the fixed frame, and the adjusting mechanism includes a fourth hydraulic motor, a screw, and a first guide shaft. The through shafts at both ends of the screw are rotatably connected to the fixed plate. The fourth hydraulic motor is fixed on the fixed plate and linked to the screw. A pair of first guide shafts are provided, and both ends of the first guide shaft are fixedly connected to the fixed plate.

[0031] The locking mechanism comprises a second oil cylinder, a third support plate, a support frame, a block, and an adjusting rod; two ends of the third support plate are provided with a rotating support wheel and are located in the guide groove, the support frame is arranged under the third support plate, the support frame is slidably connected to the second limit shaft, the support frame is provided with a third limit shaft and is slidably connected to the third support plate. The support frame is provided with an adjusting rod, and two ends of the adjusting rod are provided with a fixed limit plate, a limit block and a slidably arranged block between the limit plate and the limit block. The block is provided with a second guide shaft, the second guide shaft is slidably connected to the limit plate, the second guide shaft is sleeved with a second spring, the second spring top contacts the block and the limit plate, the second oil cylinder is fixed to the third support plate, and the second oil cylinder top shaft is fixedly connected to the support frame, and the second oil cylinder pushes the support frame, the adjusting rod, and the block to move downward into the first limit groove, the second limit groove, and the third limit groove to lock the first drill rod, the second casing, and the second drill rod with each other to form a whole.

[0032] The first sleeve is configured as two semicircular covers and are fixed by bolts after being sleeved with the second sleeve; the first sleeve is provided with a first through hole and a support block, the support block is arranged in the first through groove, the support block is provided with a first limiting shaft and fits the inner wall of the second sleeve to limit the first sleeve, the support block is provided with an arc-shaped rack, and a third hydraulic motor is also provided on one side of the first sleeve, the third hydraulic motor is fixed on the inner wall of the second sleeve, a gear is provided on the output shaft of the third hydraulic motor and meshes with the arc-shaped rack, and the first sleeve is driven to rotate by the third hydraulic motor in cooperation with the arc-shaped rack so that the first through hole and the second through hole are aligned and staggered.

[0033] The second drill rod is hollow inside and is provided with a first support plate, on which a second hydraulic motor and a transmission gear are provided, on an output shaft of the second hydraulic motor a gear is provided and meshes with the transmission gear, and the transmission gear meshes with the second gear ring; the second casing is driven to rotate along the first clamping ring and the second clamping ring by the second hydraulic motor.

[0034] The second support plate is fixedly connected to the inner wall of the second sleeve, and the medicine feed pipe and one end of the air inlet pipe are fixed by the second support plate. The end of the air inlet pipe is provided with an injection pipe, which is arranged inside the medicine feed pipe and is sleeved with each other, and the end of the medicine feed pipe is arranged in the second through hole; a second diverter pipe is provided at one end of the air inlet pipe, and the second diverter pipe passes through the inner wall of the first drill rod and is connected to the second ring box; a first diverter pipe is provided at one end of the medicine feed pipe, and the first diverter pipe passes through the inner wall of the first drill rod and is connected to the first ring box.

[0035] A multi-channel hydraulic rotary joint is provided at the top of the first drill rod for connecting the oil circuits between the oil station and various hydraulic parts to avoid entanglement of the oil circuits when the first drill rod rotates; the multi-channel hydraulic rotary joint is provided with multiple independently operated and controlled oil circuits to connect the hydraulic components inside the injection mechanism.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] 1) The present invention is provided with an injection mechanism, which can be transferred to the repair area through a carrier for in-situ injection repair. A single-hole continuous dynamic fixed-depth injection is adopted. By controlling and optimizing the agent addition parameters, the agent injection parameters can be precisely controlled; the small-caliber bottom-up injection method solves the problem of sandwich layer repair, and at the same time has the advantage of maintaining the bearing capacity of the foundation after construction. The diffusion and injection effect of the agent can be guaranteed by designing air, agent nozzles and drilling tools. Specifically: a locking mechanism is provided inside the first drill rod, which can lock the first drill rod, the second drill rod and the second casing to form a whole and release the locking state to control their independent operation. When the three are in the locked state, the first drill rod, the second casing and the drill bit can be smoothly submerged in the soil. When the three are released from the locked state, the support block and the first casing are driven by the third hydraulic motor. The rotation makes the first through hole overlap with the second through hole, so that the medicine liquid is sprayed out and a gas-liquid mixture is generated under the action of the jet pipe to make the medicine liquid dispersed more evenly; in this process, the support block moves in the first through groove, and the push shaft in the push mechanism moves in the second through groove; further, the first oil cylinder in the push mechanism pushes out the push shaft so that the push shaft drives the scraper and the sleeve plate to gradually lift up. In this process, the second hydraulic motor drives the second sleeve to rotate so that the scraper and the sleeve plate loosen the soil around the first sleeve in the process of mutual elongation. During the loosening process, the soil gradually expands from the wall to the periphery, achieving the effect of layer-by-layer relay loosening, which can avoid the occurrence of uneven loosening and make the injection of the medicine liquid more even and deeper; after the first sleeve is reversed and reset, the second through hole is closed, which can effectively prevent the injection mechanism from being blocked when it dives into the soil and affecting the spraying of the medicine liquid;

[0038] The digital control work platform can realize the comprehensive processing of various control information and parameters, including collecting and setting various information parameters required for soil remediation according to the construction environment and site, and then forming an orderly and stable remediation process route, including the injection process, soil drilling depth, injection amount, and the mixing rate of the medicine tank. The order and workload of each work, and then through the above digital control, an accurate, orderly and stable soil remediation effect is achieved;

[0039] 2) When the locking mechanism is unlocked, the second oil cylinder is used to pull the support frame up along the second limit axis, and then the block is pulled up to exit the first limit groove, the second limit groove, and the third limit groove. Then, the second casing can be driven by the second hydraulic motor to rotate independently along the mounting groove. After the linkage with the drill bit is released, the liquid medicine can be stably injected in the same depth area. When the locking state needs to be re-realized, the second oil cylinder is used to push the adjusting rod downward to move the block downward. When the first limit groove, the second limit groove, and the third limit groove are matched, the block is pushed by the second spring to engage the first limit groove, the second limit groove, and the third limit groove, and the first drill rod, the second drill rod, and the second casing are locked and restored into a whole. During the downward movement of the block, the second spring can provide a buffering effect on the block to ensure that the block is successfully engaged.

[0040] 3) A second rotating shaft is provided in the medicine tank for rotation. When the spline shaft and the gear cooperate with the first gear ring, the chain plate and the cross plate can realize horizontal and vertical stirring of the medicine liquid. Then, the sleeve can slide along the spline shaft through the push of the first spring and the cooperation of the protrusion. On the basis of horizontal and vertical stirring, the axial movement stirring of the medicine liquid is realized through the inclined plate, and finally the stirring process of the medicine liquid is realized, so that the medicine liquid will not have large-scale precipitation during the long injection repair process. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Attached Figure 1 This is a schematic diagram of the internal structure of the injection mechanism. Figure 1 ;

[0042] Attached Figure 2 This is a schematic diagram of the injection mechanism. Figure 2 ;

[0043] Attached Figure 3 This is a schematic diagram of the injection mechanism. Figure 3 ;

[0044] Attached Figure 4 This is a schematic diagram of the injection mechanism. Figure 4 ;

[0045] Attached Figure 5 This is the structural diagram of the injection mechanism. Figure 5 ;

[0046] Attached Figure 6 is a schematic diagram of the structure of the first casing;

[0047] Attached Figure 7 is a schematic diagram of the structure of the second casing;

[0048] Attached Figure 8 It is a structural schematic diagram of a first casing, a first drill pipe, and a second drill pipe;

[0049] Attached Fig. 9is a schematic diagram of the internal structure of the second casing;

[0050] Attached Fig.10 It is a structural schematic diagram of the push mechanism;

[0051] Attached Fig.11 This is a schematic diagram of the structure of the equipment embodiment 1 of the present invention for realizing modular in-situ soil injection repair using a digital control system;

[0052] Attached Fig.12 It is a structural schematic diagram of a fixing frame and an adjusting mechanism;

[0053] Attached Fig.13 This is a schematic diagram of the internal structure of the medicine tank. Figure 1 ;

[0054] Attached Fig.14 This is a schematic diagram of the internal structure of the medicine tank. Figure 2 ;

[0055] Attached Fig.15 It is a schematic diagram of the structure of the sleeve;

[0056] Attached Fig.16 It is a schematic diagram of the structure of the sleeve and the support arm;

[0057] Attached Fig.17 It is a schematic diagram of the oil circuit connection between the oil station and hydraulic components;

[0058] In the figure: 1, vehicle; 101, cockpit; 2, air compressor; 3, medicine tank; 31, third motor; 301, first gear ring; 302, bump; 303, medicine outlet; 304, medicine inlet; 32, second rotating shaft; 33, spline shaft; 331, gear; 34, sleeve; 341, chain; 342, chain plate; 343, sprocket; 35, support arm; 351, first top shaft; 352, roller; 353, second top shaft; 36, horizontal plate; 361, support leg; 362, vertical plate; 363, inclined plate; 37, first spring; 4, oil station; 5, base;

[0059] 6. Fixed frame; 61. First rotating shaft; 62. First gear plate; 63. First motor; 64. Guide frame; 65. Fixed plate;

[0060] 7. Adjusting mechanism; 71. Fourth hydraulic motor; 72. Lead screw; 73. First guide shaft;

[0061] 8. injection mechanism; 801. mounting seat; 802. first drill rod; 8021. teeth; 8022. first cover plate; 8023. guide groove; 8024. first clamping ring; 8025. first limit groove;

[0062] 803, first mounting plate; 804, second mounting plate; 805, first sleeve; 8051, first through hole; 8052, support block; 8053, first limiting shaft; 8054, arc rack; 8055, third hydraulic motor; 806, drill bit; 807, second drill rod; 8071, second clamping ring; 8072, second limiting groove; 809, second toothed disc; 810, first hydraulic motor; 811, first transfer box; 8111, first ring box; 8112, second cover plate; 8113, first fixed shaft; 8114, first through pipe; 812, second transfer box; 8121, second ring box; 8122, third cover plate; 8123, second fixed shaft; 8124, second through pipe;

[0063] 813, push mechanism; 8131, fourth support plate; 81311, third fixed shaft; 8132, first oil cylinder; 8133, push shaft; 8134, scraper; 8135, sleeve plate; 8136, fixed block;

[0064] 814, second sleeve; 8141, second through hole; 8142, first through slot; 8143, second through slot; 8144, mounting slot; 8145, third limiting slot; 8146, second limiting shaft; 8147, second gear ring; 815, first support plate; 816, second hydraulic motor; 8161, transmission gear; 817, multi-channel hydraulic rotary joint;

[0065] 82, medicine inlet pipe; 821, first shunt pipe; 83, air inlet pipe; 831, second shunt pipe; 832, jet pipe; 84, second support plate;

[0066] 9. Locking mechanism; 91. Second oil cylinder; 92. Third support plate; 921. Support wheel; 93. Support frame; 931. Third limit shaft; 94. Block; 941. Second spring; 942. Second guide shaft; 96. Adjusting rod; 962. Limit block; 963. Limit plate. DETAILED DESCRIPTION

[0067] To facilitate the understanding of those skilled in the art, Figure 1-17 , the technical solution of the present invention is further specifically described.

[0068] Actual example 1:

[0069] The equipment for modular in-situ soil injection repair using a digital control system includes a vehicle 1, on which a cockpit 101, an air compressor 2, a medicine tank 3, a gas station 4, and a base 5 are provided. The base 5 is provided with a fixing frame 6, on which an adjustment mechanism 7 is provided, on which an injection mechanism 8 is provided, and inside which a locking mechanism 9 is provided. The vehicle is driven in the cockpit 101, and the air compressor 2, the medicine tank 3, and the gas station 4 provide the injection mechanism 8 with high-pressure gas, injection repair liquid, and oil pressure power.

[0070] The vehicle's cockpit is also equipped with a digital control work platform, including a physical marshaling device and an information marshaling terminal; the physical marshaling device is used to cooperate with various mechanisms to perform custom variable marshaling and settings according to the type of work scene and the complexity of the repair process, and generate different work routes and methods, including the order of work of each mechanism; the information marshaling terminal is used to perform digital scene definition according to different construction process requirements and the dynamic work element set involved in the repair equipment, and perform comprehensive information processing, including injection process, soil drilling depth, injection amount, and mixing rate of the medicine tank, and control the operation of the formulated work path; the above-mentioned digital control work platform is used to control and optimize the agent dosing parameters so that the agent injection parameters can be accurately controlled. The digital control work platform is an existing technology;

[0071] A first toothed ring 301 and a plurality of evenly distributed protrusions 302 are provided on the inner wall of the medicine tank 3, a medicine inlet 304 and a third motor 31 are provided on the top of the medicine tank 3, a medicine outlet 303 is provided on the side wall of the medicine tank 3, a second rotating shaft 32 is provided inside the medicine tank 3, and a rotatably connected spline shaft 33 is provided at both ends of the second rotating shaft 32, one set of the spline shaft 33 ends are provided with a rotating gear 331 and meshes with the first toothed ring 301, a slidably connected sleeve 34 and a sleeved first spring 37 are provided on the spline shaft 33, sprocket wheels 343 are provided at both ends of the sleeve 34, and the upper and lower corresponding sprocket wheels 343 are connected by chains 341; a chain plate 342 is provided on the chain 341; and the first spring 37 contacts the second rotating shaft 32 and the sprocket wheel 343.

[0072] The chain 341 is provided with a horizontal plate 36 and is fixedly connected through the legs 361, the horizontal plate 36 is provided with a vertical plate 362, and an inclined plate 363 is provided between the vertical plate 362 and the horizontal plate 36; a support arm 35 is provided between the sleeves 34, and the two ends of the support arm 35 are rotatably connected to the sleeve 34, and a first top shaft 351 is provided on the support arm 35, and a roller 352 is provided at the end of the first top shaft 351 and touches the inner wall of the medicine tank 3 and the protrusion 302, and a second top shaft 353 is provided at both ends of the support arm 35, and the two ends of the second top shaft 353 touch the inner wall of the medicine tank 3 and the protrusion 302. The third motor 31 contacts the sprocket wheel 343; the shaft end of the third motor 31 is connected to the second rotating shaft 32 and provides power for its rotation, thereby driving the spline shaft 33 to rotate, thereby driving the chain plate 342 and the inclined plate 363, and the vertical plate 362 to move back and forth along the chain 341 to achieve stirring of the medicine liquid. At the same time, the first top shaft 351 contacts the protrusion 302 and cooperates with the first spring 37 and the second top shaft 353 to drive the sleeve 34 to move as a whole along the spline shaft 33 to achieve stirring and mixing of the medicine liquid up and down, left and right, and as a whole with the second rotating shaft 32 as the axis.

[0073] The fixed frame 6 is provided with a fixed first rotating shaft 61, one end of the first rotating shaft 61 is rotatably connected to the base 5, the first rotating shaft 61 is provided with a first gear plate 62, the base 5 is provided with a first motor 63, the shaft end of the first motor 63 is provided with a gear and meshes with the first gear plate 62, the fixed frame 6 is provided with a fixing plate 65 and a guide frame 64, and the fixing plate 65 is arranged at both ends of the fixed frame 6.

[0074] The adjusting mechanism 7 is arranged on the fixed frame 6, and the adjusting mechanism 7 includes a fourth hydraulic motor 71, a screw 72, and a first guide shaft 73. The through shafts at both ends of the screw 72 are rotatably connected to the fixed plate 65. The fourth hydraulic motor 71 is fixed on the fixed plate 65 and linked with the screw 72. A pair of first guide shafts 73 are provided, and both ends of the first guide shaft 73 are fixedly connected to the fixed plate 65.

[0075] The injection mechanism 8 includes a mounting seat 801, a first mounting plate 803, a second mounting plate 804, a first sleeve 805, a drill bit 806, a second sleeve 814, a second gear plate 809, a first hydraulic motor 810, a first transfer box 811, a second transfer box 812, a push mechanism 813, a second sleeve 814, a first support plate 815, a second hydraulic motor 816, a medicine feed pipe 82, an air intake pipe 83, a first drill rod 802, a second drill rod 807, and a second support plate 84; a mounting seat The screw is threadedly connected, and the mounting seat is slidably connected to the first guide shaft; the first mounting plate 803 and the second mounting plate 804 are fixed on the mounting seat 801, the first hydraulic motor 810 and the second gear plate 809 are arranged on the second mounting plate 804, the output shaft of the first hydraulic motor 810 is provided with a gear and meshes with the second gear plate 809, the first drill rod 802 is rotatably connected to the first mounting plate 803 and the second mounting plate 804, the first drill rod 802 is provided with teeth 8021 and meshes with the second gear plate 809, the first transfer The first transfer box 811 and the second transfer box 812 are fixed on the outer wall of the first drill rod 802; the first transfer box 811 includes a first ring box 8111 fixedly connected to the outer wall of the first drill rod 802, the first ring box 8111 is provided with a second cover plate 8112 rotatably connected, a sealing gasket is provided between the second cover plate 8112 and the first ring box 8111, the second cover plate 8112 is provided with a first fixed shaft 8113 and fixedly connected to the first mounting plate 803, and the second cover plate 8112 is provided with a first through pipe 8114 connected , the first through pipe 8114 is connected to the medicine tank 3 for medicine inlet; the second transfer box 812 includes a second ring box 8121 fixedly connected to the outer wall of the first drill rod 802, the second ring box 8121 is provided with a third cover plate 8122 that is rotatably connected, a sealing gasket is provided between the third cover plate 8122 and the second ring box 8121, the third cover plate 8122 is provided with a second fixed shaft 8123 and is fixedly connected to the first mounting plate 803, the third cover plate 8122 is provided with a second through pipe 8124 and is connected to the air compressor 2 for air intake.

[0076] A guide groove 8023 is provided on the inner wall of the first drill rod 802 , a first cover plate 8022 fixed with bolts is provided on the top of the first drill rod 802 , a first clamping ring 8024 is provided at one end of the first drill rod 802 , and a first limiting groove 8025 is provided on the first clamping ring 8024 .

[0077] The second drill rod 807 is provided with a second clamping ring 8071 , and the second clamping ring 8071 is provided with a second limiting groove 8072 .

[0078] Both ends of the second sleeve 814 are provided with mounting grooves 8144, which fit the first retaining ring 8024 and the second retaining ring 8071. Both ends of the second sleeve 814 are provided with third limiting grooves 8145. One end of the second sleeve 814 is provided with a second limiting shaft 8146. The side wall of the second sleeve 814 is provided with a first through groove 8142, a second through groove 8143, and a second through hole 8141; the bottom of the second sleeve 814 is provided with a second toothed ring 8147.

[0079] The locking mechanism 9 includes a second oil cylinder 91, a third support plate 92, a support frame 93, a block 94, and an adjusting rod 96; rotating support wheels 921 are provided at both ends of the third support plate 92 and are located in the guide groove 8023, the support frame 93 is arranged below the third support plate 92, the support frame 93 is slidably connected to the second limiting shaft 8146, the support frame 93 is provided with a third limiting shaft 931 and is slidably connected to the third support plate 92, the support frame 93 is provided with an adjusting rod 96, and fixed limiting plates 963, limiting blocks 962 and slidably arranged block 94 are provided at both ends of the adjusting rod 96, and the block 94 is arranged between the limiting plate 963 and the limiting block 962 A second guide shaft 942 is provided on the block 94, and the second guide shaft 942 is slidably connected to the limit plate 963. A second spring 941 is sleeved on the second guide shaft 942, and the second spring 941 contacts the block 94 and the limit plate 963. The second oil cylinder 91 is fixed on the third support plate 92, and the second oil cylinder 91 is fixedly connected to the support frame 93. The second oil cylinder 91 pushes the support frame 93, the adjusting rod 96, and the block 94 downward into the first limit groove 8025, the second limit groove 8072, and the third limit groove 8145 to lock the first drill rod 802, the second casing 814, and the second drill rod 807 to form a whole.

[0080] The first sleeve 805 is configured as two semicircular covers and are fixed by bolts after being sleeved with the second sleeve 814; the first sleeve 805 is provided with a first through hole 8051 and a support block 8052, the support block 8052 is arranged in the first through groove 8142, the support block 8052 is provided with a first limiting shaft 8053 and fits the inner wall of the second sleeve 814 to limit the first sleeve 805, the support block 8052 is provided with an arc rack 8054, and a third hydraulic motor 8055 is also provided on one side of the first sleeve 805, the third hydraulic motor 8055 is fixed on the inner wall of the second sleeve 814, a gear is provided on the output shaft of the third hydraulic motor 8055 and meshes with the arc rack 8054, and the first sleeve 805 is driven to rotate by the third hydraulic motor 8055 in cooperation with the arc rack 8054 so that the first through hole 8051 and the second through hole 8141 are aligned and staggered.

[0081] The second drill rod 807 is hollow inside and is provided with a first support plate 815, on which a second hydraulic motor 816 and a transmission gear 8161 are provided, and a gear is provided on the output shaft of the second hydraulic motor 816 and meshes with the transmission gear 8161, and the transmission gear 8161 meshes with the second gear ring 8147; the second hydraulic motor 816 drives the second sleeve 814 to rotate along the first clamping ring 8024 and the second clamping ring 8071.

[0082] The second support plate 84 is fixedly connected to the inner wall of the second sleeve 814, and the medicine feed pipe 82 and one end of the air inlet pipe 83 are fixed by the second support plate 84. An injection pipe 832 is provided at the end of the air inlet pipe 83. The injection pipe 832 is arranged inside the medicine feed pipe 82 and is connected to each other. The end of the medicine feed pipe 82 is arranged in the second through hole 8141; a second diverter pipe 831 is provided at one end of the air inlet pipe 83, and the second diverter pipe 831 passes through the inner wall of the first drill rod 802 and is connected to the second ring box 8121; a first diverter pipe 821 is provided at one end of the medicine feed pipe 82, and the first diverter pipe 821 passes through the inner wall of the first drill rod 802 and is connected to the first ring box 8111.

[0083] A multi-channel hydraulic rotary joint 817 is provided on the top of the first drill rod 802 for connecting the oil circuits between the oil station 4 and various hydraulic components to avoid entanglement of the oil circuits when the first drill rod 802 rotates; the multi-channel hydraulic rotary joint 817 is provided with a plurality of independently operated and controlled oil circuits to connect the hydraulic components inside the injection mechanism 8; the model of the multi-channel hydraulic rotary joint 817 is LT-DEUBLIN-ZK, which is a customized version or purchased on the market.

[0084] The pushing mechanism 813 includes a fourth support plate 8131, which is fixedly connected to the inner wall of the second sleeve 814. The fourth support plate 8131 is provided with a third fixed shaft 81311 and a first oil cylinder 8132. The third fixed shaft 81311 is fixedly connected to the fourth support plate 8131. The base of the first oil cylinder 8132 is rotatably connected to the third fixed shaft 81311. A pushing shaft 8133 is provided on the top shaft of the first oil cylinder 8132. The pushing shaft 8133 is arranged in the second through groove 8143 and slides through the first sleeve 805. A symmetrically arranged scraper 8134 is provided on the pushing shaft 8133. The scraper 8134 is hingedly connected to the pushing shaft 8133. A sleeve plate 8135 is provided at one end of the scraper 8134. A hinged fixed block 8136 is provided at one end of the sleeve plate 8135. The fixed block 8136 is fixed on the first sleeve 805.

[0085] The digital control system is used to realize modular soil in-situ injection repair equipment. The working process is as follows:

[0086] This set of equipment uses the digital overall control of the injection mechanism to inject repair liquid, the vehicle to move, and the adjustment mechanism to adjust the angle of the injection mechanism through the control module in the vehicle cockpit. By independently controlling the injection mechanism injection, the vehicle to move, and the adjustment mechanism to adjust the angle, each mechanism can operate separately as an independent module without interfering with each other; modular control of walking transfer and liquid injection is realized, which greatly improves operational efficiency and accuracy.

[0087] The carrier 1 carries the injection mechanism 8 to move to the repair area, and the first hydraulic motor 810 in the injection mechanism 8 cooperates with the second gear disc 809 to drive the first drill rod 802 to rotate, and the first drill rod 802, the second drill rod 807, and the second casing 814 are locked with each other through the locking mechanism 9 to form a whole, thereby driving the drill bit 806 to rotate, and at the same time the fourth hydraulic motor 71 drives the mounting seat 801 to move up and down along the first guide shaft 73 to achieve a steady dive of the drill bit 806; when the first drill rod 802 rotates, the first ring box 8111 and the second ring box 8121 rotate accordingly, and the second cover plate 8112 and the third cover plate 8122 are relatively fixed due to being connected to the first mounting plate 803, forming a rotating structure and ensuring the normal transportation of liquid medicine and gas, avoiding the occurrence of pipeline entanglement.

[0088] After diving to a certain depth in the repair area, stop the fourth hydraulic motor 71 from continuing to provide power and stop the first hydraulic motor 810 from providing power; then release the locking state between the first drill rod 802, the second drill rod 807, and the second casing 814 through the locking mechanism 9, first pull the support frame 93 up along the second limiting axis 8146 through the second oil cylinder 91, and then pull the blocking block 94 up and out of the first limiting groove 8025, the second limiting groove 8072, and the third limiting groove 8145, so that the second casing 814 can rotate independently along the mounting groove 8144 driven by the second hydraulic motor 816.

[0089] The third hydraulic motor 8055 drives the support block 8052 and the first sleeve 805 to rotate so that the first through hole 8051 overlaps with the second through hole 8141, thereby causing the medicine to spray out and generate a gas-liquid mixture under the action of the jet from the jet pipe 832, so that the medicine is dispersed more evenly. In this process, the support block 8052 moves in the first through groove 8142, and the push shaft 8133 in the push mechanism 813 moves in the second through groove 8143; further, the first oil cylinder 8132 in the push mechanism 813 pushes out the push shaft 8133 so that the push shaft 8133 drives the scraper 8134 and the sleeve 8135 to gradually lift up. In this process, the second hydraulic motor 816 drives the second sleeve 814 to rotate so that the scraper 8134 and the sleeve 8135 loosen the soil outside the first sleeve 805 in the process of mutual elongation, and gradually expands from the wall to the periphery during the loosening process, so that the medicine injection is more uniform and deeper.

[0090] When it is necessary to raise and reset the first drill rod 802, when the second sleeve 814 rotates, the second oil cylinder 91 pushes the adjusting rod 96 downward to move the blocking block 94 downward, and the second spring 941 provides a buffering effect on the blocking block 94. When the first limiting groove 8025, the second limiting groove 8072, and the third limiting groove 8145 fit each other, the blocking block 94 is pushed by the second spring 941 to clamp the first limiting groove 8025, the second limiting groove 8072, and the third limiting groove 8145, and the first drill rod 802, the second drill rod 807, and the second sleeve 814 are locked and restored into a whole; then the first drill rod 802 is reversed and the fourth hydraulic motor 71 is cooperated to reverse and lift the mounting seat 801 to complete the excavation of the drill bit 806; and then it is transferred to the next area through the carrier 1.

[0091] Among them, a second rotating shaft 32 is provided in the medicine tank 3 for rotation. When the spline shaft 33 and the gear 331 cooperate with the first gear ring 301, the chain plate 342 and the cross plate 36 can be used to achieve horizontal and vertical stirring of the medicine liquid. The sleeve 34 is then able to slide along the spline shaft 33 through the push of the first spring 37 and the coordinated use of the protrusion 302. On the basis of horizontal and vertical stirring, the axial movement stirring of the medicine liquid is achieved through the inclined plate 363, and finally a satisfactory stirring process of the medicine liquid is achieved, so that the medicine liquid will not precipitate on a large scale during the long injection repair process.

[0092] The specific injection method when used by the injection institution is as follows:

[0093] 1) Set the drilling distance according to the soil pollution situation to ensure that the radiation range can be connected or bordered in the process of dispersing radiation to the surrounding areas after the injection of the agent; then determine the drilling depth. The preset depth can reach the bottom of the contaminated soil to ensure that the remediation liquid can be dispersed and radiated to the bottom of the contaminated soil; the injection depth of this injection mechanism is set at 1.2m;

[0094] 2) After the drill rod is vertically corrected, drilling is carried out, and attention should be paid to the stones inside the soil at any time so as to stop drilling in time to avoid damage to the drill bit and drill rod; the injection mechanism can be set up with multiple sets in parallel for drilling injection; the injection mechanism can be set up with an interval of 1m, so that the liquid radiation range between adjacent injection mechanisms can be adjacent or cross, ensuring that the repair effect can be more comprehensive;

[0095] 3) During the drilling process, before drilling, the second oil cylinder in the locking mechanism pushes the locking block to lock the first drill rod, the first casing, and the second drill rod to ensure that a complete and fixed drill rod is formed; then the first hydraulic motor drives the drill to the corresponding depth and stops; then the locking mechanism releases the locking state of the first drill rod, the second drill rod, and the first casing, so that the first casing can rotate alone;

[0096] 4) The second hydraulic motor drives the first casing and the second casing to rotate independently, and the first oil cylinder continuously pushes the ejection shaft while rotating, thereby driving the scraper and the sleeve plate to be gradually ejected. Therefore, when the first casing rotates, the scraper and the sleeve plate will loosen the hard soil around the borehole layer by layer, so as to improve the dispersion and radiation speed and quality of the repair agent;

[0097] 5) Before spraying the liquid medicine, the third hydraulic motor drives the second sleeve to rotate so that the first through hole and the second through hole overlap, so that the liquid medicine can be sprayed out smoothly; and after the liquid medicine is sprayed, the second sleeve is reset so that the first through hole and the second through hole are staggered again to avoid blockage after entering the soil;

[0098] 6) Liquid injection: high-pressure gas is provided by an external air compressor. Since the jet pipe is located inside the medicine inlet pipe and is connected to each other, the liquid medicine will produce a gas-liquid mixture under the action of the jet pipe when it is sprayed, making the liquid medicine more evenly dispersed and the spraying force stronger; the air injection pressure is 0.5 Mpa; the medicine injection pressure is 25 Mpa;

[0099] 7) The locking mechanism then locks the first casing, the first drill rod, and the second drill rod, and then the drill bit is reversed to reset the injection mechanism out of the ground, and then transferred to the next injection point through the carrier.

[0100] Embodiment 2:

[0101] The difference compared with Example 1 is that the injection mechanism in this embodiment is set to single-row single-column single-hole injection repair; and the injection depth in step 1) is 1.35m; the injection depth of the injection mechanism in step 2) is set to 1.2m; the air injection pressure is 0.8 Mpa; and the agent injection pressure is 30 Mpa.

[0102] In the description of the present invention, unless otherwise specified, "plurality" means two or more; the orientations or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inside", "outside", "front end", "rear end", "head" and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention; in addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0103] In summary, electronic or electrical components including but not limited to motors are components in the prior art, obtained through private customization or purchase, and the electrical connections between the components are conventional circuit connections or electrical connections in the prior art, which are not within the scope of protection of the present invention; the connection between the oil station and the oil cylinder and hydraulic motor is a conventional oil circuit connection in the prior art, which is not within the scope of protection of the present invention;

[0104] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A modular soil in-situ injection repair equipment using a digital control system, including an injection mechanism, characterized in that The injection mechanism includes a mounting seat, a first mounting plate, a second mounting plate, a first sleeve, a drill bit, a second sleeve, a second gear disc, a first hydraulic motor, a first transfer box, a second transfer box, a pushing mechanism, a first support plate, a second hydraulic motor, a medicine feed pipe, an air intake pipe, a first drill rod, a second drill rod, and a second support plate; the first mounting plate and the second mounting plate are fixed to the mounting seat, the mounting seat is threadedly connected to the lead screw, the mounting seat is slidably connected to the first guide shaft, the first hydraulic motor and the second gear disc are arranged on the second mounting plate, the output shaft of the first hydraulic motor is provided with a gear and meshes with the second gear disc, the first drill rod is rotatably connected to the first mounting plate and the second mounting plate, the first drill rod is provided with teeth and meshes with the second gear disc, the first The transfer box and the second transfer box are fixed on the outer wall of the first drill pipe; the first transfer box includes a first ring box fixedly connected to the outer wall of the first drill pipe, a second cover plate rotatably connected is provided on the first ring box, a sealing gasket is provided between the second cover plate and the first ring box, a first fixed shaft is provided on the second cover plate and fixedly connected to the first mounting plate, a first connected through pipe is provided on the second cover plate, and the first through pipe is connected to the medicine tank for medicine intake; the second transfer box includes a second ring box fixedly connected to the outer wall of the first drill pipe, a third cover plate rotatably connected is provided on the second ring box, a sealing gasket is provided between the third cover plate and the second ring box, a second fixed shaft is provided on the third cover plate and fixedly connected to the first mounting plate, and a second through pipe is provided on the third cover plate and connected to the air compressor for air intake; A guide groove is provided on the inner wall of the first drill rod, a first cover plate fixed with bolts is provided on the top of the first drill rod, a first clamping ring is provided at one end of the first drill rod, and a first limiting groove is provided on the first clamping ring; a second clamping ring is provided on the second drill rod, and a second limiting groove is provided on the second clamping ring; mounting grooves are provided at both ends of the second casing, the mounting grooves fit the first clamping ring and the second clamping ring, third limiting grooves are provided at both ends of the second casing, a second limiting shaft is provided at one end of the second casing, a first through groove, a second through groove, and a second through hole are provided on the side wall of the second casing; a second gear ring is provided at the bottom of the second casing; The pushing mechanism includes a fourth support plate, the fourth support plate is fixedly connected to the inner wall of the second sleeve, a third fixed shaft and a first oil cylinder are arranged on the fourth support plate, the third fixed shaft is fixedly connected to the fourth support plate, the first oil cylinder base is rotatably connected to the third fixed shaft, a push shaft is arranged on the top shaft of the first oil cylinder, the push shaft is arranged in the second through groove and the push shaft slides through the first sleeve, a symmetrically arranged scraper is arranged on the push shaft, the scraper is hingedly connected to the push shaft, one end of the scraper is provided with a sleeved sleeve plate, one end of the sleeve plate is provided with a hinged fixed block, and the fixed block is fixed on the first sleeve; The injection method of the injection mechanism is as follows: 1) Set the drilling distance according to the soil pollution situation to ensure that the radiation range can be connected or bordered in the process of dispersing radiation to the surroundings after the injection of the agent; then determine the drilling depth, and the preset depth can reach the bottom of the contaminated soil to ensure that the remediation liquid can be dispersed and radiated to the bottom of the contaminated soil; the injection depth of this injection mechanism is set between 0.5-4m; 2) After the drill rod is vertically corrected, drilling is carried out, and attention should be paid to the stones inside the soil at any time so as to stop drilling in time to avoid damage to the drill bit and drill rod; the injection mechanism can be set up with multiple sets in parallel for drilling injection; the scattered radiation range of the agent after injection is within 0.5-1m, so the injection mechanism can be set at intervals of 0.8-1.5m, so that the radiation range of the agent between adjacent injection mechanisms can be adjacent or cross, ensuring that the repair effect can be more comprehensive; 3) During the drilling process, before drilling, the second oil cylinder in the locking mechanism pushes the locking block to lock the first drill rod, the first casing, and the second drill rod to ensure that a complete and fixed drill rod is formed; then the first hydraulic motor drives the drill to the corresponding depth and stops; then the locking mechanism releases the locking state of the first drill rod, the second drill rod, and the first casing, so that the first casing can rotate alone; 4) The second hydraulic motor drives the first casing and the second casing to rotate independently, and the first oil cylinder continuously pushes the ejection shaft while rotating, thereby driving the scraper and the sleeve plate to be gradually ejected. Therefore, when the first casing rotates, the scraper and the sleeve plate will loosen the hard soil around the borehole layer by layer, so as to improve the dispersion and radiation speed and quality of the repair agent; 5) Before spraying the liquid medicine, the third hydraulic motor drives the second sleeve to rotate so that the first through hole and the second through hole overlap, so that the liquid medicine can be sprayed out smoothly; and after the liquid medicine is sprayed, the second sleeve is reset so that the first through hole and the second through hole are staggered again to avoid blockage after entering the soil; 6) Liquid injection: high-pressure gas is provided by an external air compressor. Since the jet pipe is arranged inside the medicine inlet pipe and is connected to each other, the liquid medicine will produce a gas-liquid mixture under the action of the jet from the jet pipe when it is sprayed out, making the liquid medicine more evenly dispersed and the spraying force stronger; 7) The locking mechanism then locks the first casing, the first drill rod, and the second drill rod, and then the drill bit is reversed to reset the injection mechanism out of the ground, and then transferred to the next injection point through the carrier.

2. The equipment for realizing modular in-situ soil injection repair using a digital control system according to claim 1 is characterized in that The first sleeve is configured as two semicircular covers and are fixed by bolts after being sleeved with the second sleeve; the first sleeve is provided with a first through hole and a support block, the support block is arranged in the first through groove, the support block is provided with a first limiting shaft and fits the inner wall of the second sleeve to limit the first sleeve, the support block is provided with an arc-shaped rack, and a third hydraulic motor is also provided on one side of the first sleeve, the third hydraulic motor is fixed on the inner wall of the second sleeve, a gear is provided on the output shaft of the third hydraulic motor and meshes with the arc-shaped rack, and the first sleeve is driven to rotate by the third hydraulic motor in cooperation with the arc-shaped rack so that the first through hole and the second through hole are aligned and staggered.

3. The equipment for realizing modular in-situ soil injection repair using a digital control system according to claim 1 is characterized in that The second drill rod is hollow inside and is provided with a first support plate, on which a second hydraulic motor and a transmission gear are provided, on an output shaft of the second hydraulic motor a gear is provided and meshes with the transmission gear, and the transmission gear meshes with the second gear ring; the second casing is driven to rotate along the first clamping ring and the second clamping ring by the second hydraulic motor.

4. The equipment for realizing modular in-situ soil injection repair using a digital control system according to claim 1 is characterized in that The second support plate is fixedly connected to the inner wall of the second sleeve, and the medicine feed pipe and one end of the air inlet pipe are fixed by the second support plate. The end of the air inlet pipe is provided with an injection pipe, which is arranged inside the medicine feed pipe and is sleeved with each other, and the end of the medicine feed pipe is arranged in the second through hole; a second diverter pipe is provided at one end of the air inlet pipe, and the second diverter pipe passes through the inner wall of the first drill rod and is connected to the second ring box; a first diverter pipe is provided at one end of the medicine feed pipe, and the first diverter pipe passes through the inner wall of the first drill rod and is connected to the first ring box.

5. The equipment for realizing modular in-situ soil injection repair using a digital control system according to claim 1 is characterized in that A multi-channel hydraulic rotary joint is provided at the top of the first drill rod for connecting the oil circuits between the oil station and various hydraulic parts to avoid entanglement of the oil circuits when the first drill rod rotates; the multi-channel hydraulic rotary joint is provided with multiple independently operated and controlled oil circuits to connect the hydraulic components inside the injection mechanism.

6. The equipment for realizing modular in-situ soil injection repair using a digital control system according to claim 1 is characterized in that The injection mechanism is arranged on the vehicle; the vehicle is provided with a cockpit, an air compressor, a medicine tank, an oil station, and a base; the base is provided with a fixing frame, the fixing frame is provided with an adjustment mechanism, the adjustment mechanism is provided with an injection mechanism, and a locking mechanism is provided inside the injection mechanism; the vehicle is driven in the cockpit, and the air compressor, medicine tank, and oil station provide high-pressure gas, injection repair liquid, and hydraulic power for the injection mechanism; A first toothed ring and a number of evenly distributed protrusions are provided on the inner wall of the medicine tank, a medicine inlet and a third motor are provided on the top of the medicine tank, a medicine outlet is provided on the side wall of the medicine tank, a second rotating shaft is provided inside the medicine tank, and rotatably connected spline shafts are provided at both ends of the second rotating shaft, one set of spline shaft ends are provided with rotating gears and mesh with the first toothed ring, a slidably connected sleeve and a sleeved first spring are provided on the spline shaft, sprockets are provided at both ends of the sleeve, and the upper and lower corresponding sprockets are connected by chains; a chain plate is provided on the chain; and the first spring touches the second rotating shaft and the sprocket.

7. The equipment for realizing modular in-situ soil injection repair using a digital control system according to claim 6 is characterized in that A horizontal plate is provided on the chain and is fixedly connected through a support leg, a vertical plate is provided on the horizontal plate, and an inclined plate is provided between the vertical plate and the horizontal plate; a support arm is provided between the sleeves, and the two ends of the support arm are rotatably connected to the sleeve, and a first top shaft is provided on the support arm, and a roller is provided at the end of the first top shaft and touches the inner wall of the medicine tank and the protrusion, and a second top shaft is provided at both ends of the support arm, and the two ends of the second top shaft touch the sprocket; the third motor shaft end is connected to the second rotating shaft and provides power for its rotation, thereby driving the spline shaft to rotate, thereby driving the chain plate and the inclined plate and the vertical plate to move back and forth up and down along the chain to achieve stirring of the medicine liquid, and at the same time, the first top shaft touches the protrusion and cooperates with the first spring and the second top shaft to drive the sleeve to move as a whole along the spline shaft to achieve up and down, left and right, and overall rotation stirring and mixing of the medicine liquid as the second rotating shaft as the axis.

8. The equipment for realizing modular in-situ soil injection repair using a digital control system according to claim 6 is characterized in that The fixed frame is provided with a fixed first rotating shaft, one end of the first rotating shaft is rotatably connected to the base, the first rotating shaft is provided with a first gear plate, the base is provided with a first motor, the shaft end of the first motor is provided with a gear and meshes with the first gear plate, the fixed frame is provided with a fixed plate and a guide frame, and the fixed plates are arranged at both ends of the fixed frame.

9. The equipment for realizing modular in-situ soil injection repair using a digital control system according to claim 6, characterized in that The adjusting mechanism is arranged on the fixed frame, and the adjusting mechanism includes a fourth hydraulic motor, a screw, and a first guide shaft. The through shafts at both ends of the screw are rotatably connected to the fixed plate. The fourth hydraulic motor is fixed on the fixed plate and linked to the screw. A pair of first guide shafts are provided, and both ends of the first guide shaft are fixedly connected to the fixed plate.

10. The equipment for realizing modular in-situ soil injection repair using a digital control system according to claim 6, characterized in that The locking mechanism comprises a second oil cylinder, a third support plate, a support frame, a block, and an adjusting rod; two ends of the third support plate are provided with a rotating support wheel and are located in the guide groove, the support frame is arranged under the third support plate, the support frame is slidably connected to the second limit shaft, the support frame is provided with a third limit shaft and is slidably connected to the third support plate. The support frame is provided with an adjusting rod, and two ends of the adjusting rod are provided with a fixed limit plate, a limit block and a slidably arranged block between the limit plate and the limit block. The block is provided with a second guide shaft, the second guide shaft is slidably connected to the limit plate, the second guide shaft is sleeved with a second spring, the second spring top contacts the block and the limit plate, the second oil cylinder is fixed to the third support plate, and the second oil cylinder top shaft is fixedly connected to the support frame, and the second oil cylinder pushes the support frame, the adjusting rod, and the block to move downward into the first limit groove, the second limit groove, and the third limit groove to lock the first drill rod, the second casing, and the second drill rod with each other to form a whole.

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