High-pressure jet grouting equipment and using method thereof

Abstract

The invention relates to the technical field of grouting, and discloses high-pressure jet grouting equipment and a using method thereof.The high-pressure jet grouting equipment comprises a movable base, a pump box is connected with a first annular pipeline through a second connecting pipeline, a water pumping pipeline is fixed to the top of the pump box, and the head end of the first grouting pipeline is rotationally connected with a slurry pumping pipeline; a pulley block is fixed to the top of the sliding rail, the water pumping pipeline and the slurry pumping pipeline both bypass the first fixed pulley, the movable pulley, the second fixed pulley and the pulley block and penetrate through the support, a second drill rod is fixed to the bottom of the first drill rod through a bolt, and a drill bit is fixed to the bottom of the second drill rod through a bolt. According to the high-pressure rotary jet grouting equipment, after drilling operation is completed through the drill bit, the drill bit moves upwards while rotating, meanwhile, the third grouting pipeline, the third water spraying pipeline and the third air spraying pipeline conduct grout spraying, water spraying and air spraying correspondingly, and the fusion and solidification effect can be better through water spraying and air spraying during grouting.

Description

Technical Field

[0001] The present invention relates to the technical field of grouting, and specifically to a high-pressure jet grouting device and its usage method. Background Technique

[0002] High-pressure jet grouting means that after inserting a grouting pipe with a nozzle to a predetermined position in the soil layer, a high-pressure device is used to make the slurry into a high-pressure jet, which is ejected from the nozzle to impact and damage the soil body. Some fine soil materials rise out of the water surface along with the slurry, and the remaining soil particles, under the actions of the impact force, centrifugal force, and gravity of the jet flow, are stirred and mixed with the slurry, and are regularly rearranged according to a certain slurry-soil ratio. After the slurry solidifies, a consolidation body is formed in the soil, which together with the soil between the piles constitutes a composite foundation. By high-pressure jet grouting, the bearing capacity of the foundation is improved, the deformation of the foundation is reduced, and the purpose of foundation reinforcement is achieved.

[0003] After the existing high-pressure jet grouting equipment completes the drilling operation, it generally only grouts in the hole. The grouting fusion and solidification effect is not good enough. If water and gas are to be fused, additional pumps for water and gas need to be installed. The more drives there are, the greater the energy consumption, which affects the working efficiency. Moreover, the pipeline for transporting the slurry is relatively long, inconvenient to store, and prone to being stacked in a messy manner. In view of the above problems, the existing equipment needs to be improved. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-pressure jet grouting device and its usage method to solve the problems in the above background technique that after the existing high-pressure jet grouting equipment completes the drilling operation, it generally only grouts in the hole, the grouting fusion and solidification effect is not good enough, if water and gas are to be fused, additional pumps for water and gas need to be installed, the more drives there are, the greater the energy consumption, which affects the working efficiency, and the pipeline for transporting the slurry is relatively long, inconvenient to store, and prone to being stacked in a messy manner.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A high-pressure jet grouting device and its usage method, including a moving base, the upper end surface of the moving base is rotatably connected with a first fixed pulley and a second fixed pulley, the upper end surface of the moving base is fixed with a slide rail, a slider is slidably connected in the slide rail, a slide plate is slidably connected to one side of the slide rail, and a movable pulley is rotatably connected to the upper end surface of the slide plate.

[0006] One side of the slider is fixed with a high-pressure jet grouting mechanism. The high-pressure jet grouting mechanism includes a support plate. The upper end surface of the support plate is fixed with a bracket. A first drill rod is rotatably connected to the support plate. A first grouting pipeline, a first water spraying pipeline and a first air jetting pipeline are fixed inside the first drill rod. One side of the support plate is fixed with a first annular pipeline and a second annular pipeline. The head end of the first water spraying pipeline penetrates through one side of the first drill rod and extends into the first annular pipeline. The head end of the first air jetting pipeline penetrates through one side of the first drill rod and extends into the second annular pipeline. The other side of the bracket is fixed with an air inlet pipeline and a pump box. The air inlet pipeline is connected to the second annular pipeline through a first connecting pipeline. The pump box is connected to the first annular pipeline through a second connecting pipeline. A water pumping pipeline is fixed to the top of the pump box. The head end of the first grouting pipeline is rotatably connected to a slurry pumping pipeline. A pulley block is fixed to the top of the slide rail. The water pumping pipeline and the slurry pumping pipeline both bypass a first fixed pulley, a movable pulley, a second fixed pulley and the pulley block and penetrate through the bracket.

[0007] The bottom of the first drill rod is fixed with a second drill rod through bolts. The bottom of the second drill rod is fixed with a drill bit through bolts.

[0008] Preferably, a first motor is fixed inside the moving base, and the top of the first motor is connected to a first lead screw. The first lead screw is rotatably connected inside the slide rail, and the slider is threadedly connected to the outside of the first lead screw.

[0009] Preferably, a second motor is fixed inside the top of the slide rail, and the bottom of the second motor is connected to a second lead screw. The second lead screw is rotatably connected to the slide rail, and the slide plate is threadedly connected to the outside of the second lead screw.

[0010] Preferably, a first sealing ring is fixed to the outside of the first water spraying pipeline, and the first sealing ring is rotatably connected inside the first annular pipeline. A second sealing ring is fixed to the outside of the first air jetting pipeline, and the second sealing ring is rotatably connected inside the second annular pipeline.

[0011] Preferably, a third motor is fixed to the bottom of the support plate, and the top of the third motor is connected to a first belt drive assembly. The output end of the first belt drive assembly is connected to the first drill rod, and a first square shaft is fixed to the top of the first belt drive assembly.

[0012] Preferably, the upper side of the support plate is connected to a moving plate through an electric telescopic column, and a sleeve is rotatably connected to the moving plate. The sleeve is snap-fitted to the outside of the first square shaft.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The high-pressure rotary jet grouting equipment can achieve the purpose of enhancing the fusion and solidification effect. After the drill bit completes the drilling operation, the drill bit rotates and moves upward at the same time. Meanwhile, the third grouting pipeline, the third water spraying pipeline, and the third air jetting pipeline spray grout, water, and air respectively. Spraying water and air while grouting can make the fusion and solidification effect better.

[0015] 2. The high-pressure rotary jet grouting equipment can achieve the purpose of support and guidance. When the drill bit moves downward, the movable pulley moves downward, facilitating the release of the water pumping pipeline and the slurry pumping pipeline. When the drill bit moves upward, the movable pulley moves upward, facilitating the retraction of the water pumping pipeline and the slurry pumping pipeline. The first fixed pulley, the movable pulley, the second fixed pulley, and the pulley block play a role in supporting and guiding the water pumping pipeline and the slurry pumping pipeline, facilitating the better transportation of slurry and water.

[0016] 3. The high-pressure rotary jet grouting equipment can achieve the purpose of ensuring the flow direction of air and water. Before raising the drill bit, it is necessary to use the sleeve to socket the first square shaft and the second square shaft together. The first belt drive component rotates to drive the first drill pipe to rotate. At the same time, the first square shaft rotates to drive the second square shaft to rotate. The second circular gear rotates to drive the first circular gear to rotate, and the second belt drive component operates. Whether the second belt drive component rotates forward or backward, the rotating shaft always rotates in one direction under the driving action of the first ratchet wheel, the first ratchet sleeve, the second ratchet wheel, the second ratchet sleeve, the fourth circular gear, and the third circular gear. Therefore, whether the drill bit rotates in one direction or rotates back and forth during the rising process, the fan and the impeller always rotate in one direction, the air intake pipeline always sucks air to the right, and the pump box always pumps water to the right. Brief Description of the Drawings

[0017] Figure 1 It is a rear three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 It is a front cross-sectional structural schematic diagram of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the high-pressure rotary jet grouting mechanism of the present invention;

[0020] Figure 4 It is the present invention Figure 1 The enlarged structural schematic diagram at A in;

[0021] Figure 5 It is the present invention Figure 3 The enlarged structural schematic diagram at B in;

[0022] Figure 6 It is a connection structural schematic diagram of the first grouting pipeline, the first water spraying pipeline, the first sealing ring, the first air jetting pipeline, the second sealing ring, the third grouting pipeline, the third water spraying pipeline, and the third air jetting pipeline of the present invention;

[0023] Figure 7Schematic diagram of the connection structure between the first square shaft and the sleeve of the present invention;

[0024] Figure 8 Schematic diagram of the connection structure between the first ratchet wheel and the first ratchet sleeve of the present invention;

[0025] Figure 9 Schematic diagram of the connection structure between the second ratchet wheel and the second ratchet sleeve of the present invention;

[0026] Figure 10 Schematic diagram of the connection structure among the pump box, the impeller and the second connecting pipe of the present invention;

[0027] Figure 11 Schematic diagram of the connection structure between the second annular pipe and the first connecting pipe of the present invention;

[0028] Figure 12 Schematic diagram of the connection structure among the second drill pipe, the second grouting pipe, the second water spraying pipe and the second air jet pipe of the present invention.

[0029] In the figure: 1. Moving base; 2. First fixed pulley; 3. Second fixed pulley; 4. First motor; 5. First lead screw; 6. Slide rail; 7. Slide block; 8. Second motor; 9. Second lead screw; 10. Slide plate; 11. Movable pulley; 12. High-pressure rotary jet grouting mechanism; 1201. Support plate; 1202. Bracket; 1203. First drill pipe; 1204. First grouting pipe; 1205. First water spraying pipe; 1206. First sealing ring; 1207. First annular pipe; 1208. First air jet pipe; 1209. Second sealing ring; 1210. Second annular pipe; 1211. Third motor; 1212. First belt transmission component; 1213. First square shaft; 1214. Electric telescopic column; 1215. Moving plate; 1216. Sleeve; 1217. First fixing plate; 1218. First circular gear; 1219. Second circular gear; 1220. Second square shaft; 1221. Second belt transmission component; 1222. Second fixing plate; 1223. First ratchet wheel; 1224. First ratchet sleeve; 1225. Rotating shaft; 1226. Third fixing plate; 1227. Third circular gear; 1228. Intake pipe; 1229. Fourth fixing plate; 1230. Second ratchet wheel; 1231. Second ratchet sleeve; 1232. Fourth circular gear; 1233. First bevel gear; 1234. Second bevel gear; 1235. Fan; 1236. Filter screen; 1237. First connecting pipe; 1238. Third bevel gear; 1239. Fourth bevel gear; 1240. Pump box; 1241. Impeller; 1242. Second connecting pipe; 1243. Water pumping pipe; 1244. Grout pumping pipe; 13. Second drill pipe; 14. Second grouting pipe; 15. Second water spraying pipe; 16. Second air jet pipe; 17. Drill bit; 18. Third grouting pipe; 19. Third water spraying pipe; 20. Third air jet pipe; 21. Pulley block. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figures 1 - 12 , the present invention provides a technical solution: a high-pressure rotary jet grouting device, including a moving base 1. The upper end surface of the moving base 1 is rotatably connected with a first fixed pulley 2 and a second fixed pulley 3. The upper end surface of the moving base 1 is fixed with a slide rail 6. A slider 7 is slidably connected in the slide rail 6. A slide plate 10 is slidably connected to one side of the slide rail 6. The upper end surface of the slide plate 10 is rotatably connected with a movable pulley 11.

[0032] One side of the slider 7 is fixed with a high-pressure rotary jet grouting mechanism 12. The high-pressure rotary jet grouting mechanism 12 includes a support plate 1201. The upper end surface of the support plate 1201 is fixed with a bracket 1202. A first drill rod 1203 is rotatably connected to the support plate 1201. A first grouting pipeline 1204, a first water spraying pipeline 1205 and a first air jetting pipeline 1208 are fixed in the first drill rod 1203. A first annular pipeline 1207 and a second annular pipeline 1210 are fixed to one side of the support plate 1201. The first end of the first water spraying pipeline 1205 penetrates through one side of the first drill rod 1203 and extends into the first annular pipeline 1207. The first end of the first air jetting pipeline 1208 penetrates through one side of the first drill rod 1203 and extends into the second annular pipeline 1210. The other side of the bracket 1202 is fixed with an air inlet pipeline 1228 and a pump box 1240. The air inlet pipeline 1228 is connected to the second annular pipeline 1210 through a first connecting pipeline 1237. The pump box 1240 is connected to the first annular pipeline 1207 through a second connecting pipeline 1242. A water pumping pipeline 1243 is fixed to the top of the pump box 1240. The first end of the first grouting pipeline 1204 is rotatably connected with a slurry pumping pipeline 1244. A pulley block 21 is fixed to the top of the slide rail 6. The water pumping pipeline 1243 and the slurry pumping pipeline 1244 both bypass the first fixed pulley 2, the movable pulley 11, the second fixed pulley 3 and the pulley block 21 and penetrate through the bracket 1202.

[0033] The bottom of the first drill rod 1203 is fixed with a second drill rod 13 through bolts. The bottom of the second drill rod 13 is fixed with a drill bit 17 through bolts.

[0034] In this embodiment, as Figure 2As shown, a first motor 4 is fixed inside the moving base 1, and the top of the first motor 4 is connected to a first lead screw 5. The first lead screw 5 is rotatably connected inside the slide rail 6, and a slider 7 is threadedly connected to the outside of the first lead screw 5. The first lead screw 5 can rotate under the action of the first motor 4. At this time, the slider 7 can slide downward under the limiting action of the first lead screw 5 and the slide rail 6, thereby driving the high-pressure jet grouting mechanism 12 to move downward, facilitating smooth drilling.

[0035] In this embodiment, as Figure 2 shown, a second motor 8 is fixed inside the top of the slide rail 6, and the bottom of the second motor 8 is connected to a second lead screw 9. The second lead screw 9 is rotatably connected to the slide rail 6, and a slide plate 10 is threadedly connected to the outside of the second lead screw 9. The second lead screw 9 can rotate under the action of the second motor 8. At this time, the slide plate 10 can slide downward under the limiting action of the slide rail 6 and the second lead screw 9, thereby driving the movable pulley 11 to move downward, facilitating the release of the water pumping pipe 1243 and the slurry pumping pipe 1244 while drilling.

[0036] In this embodiment, as Figure 2 、 Figure 3 and Figure 6 shown, a first sealing ring 1206 is fixed to the outside of the first water spraying pipe 1205, and the first sealing ring 1206 is rotatably connected inside the first annular pipe 1207. A second sealing ring 1209 is fixed to the outside of the first air jet pipe 1208, and the second sealing ring 1209 is rotatably connected inside the second annular pipe 1210. The water inside the first annular pipe 1207 can flow into the first water spraying pipe 1205, and the gas inside the second annular pipe 1210 can flow into the first air jet pipe 1208. When the first drill rod 1203 rotates, the first water spraying pipe 1205 and the first sealing ring 1206 rotate inside the first annular pipe 1207, and the first air jet pipe 1208 and the second sealing ring 1209 rotate inside the second annular pipe 1210. The first sealing ring 1206 and the second sealing ring 1209 can play a role in strengthening the seal.

[0037] In this embodiment, as Figure 1 、 Figure 2 、 Figure 3 and Figure 4 shown, a third motor 1211 is fixed to the bottom of the support plate 1201, and the top of the third motor 1211 is connected to a first belt drive assembly 1212. The output end of the first belt drive assembly 1212 is connected to the first drill rod 1203, and a first square shaft 1213 is fixed to the top of the first belt drive assembly 1212. The first belt drive assembly 1212 can operate under the action of the third motor 1211, thereby driving the first drill rod 1203 to rotate, facilitating smooth drilling. At the same time, the first square shaft 1213 can rotate as the first belt drive assembly 1212 operates.

[0038] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7 shown, the upper side of the support plate 1201 is connected to the moving plate 1215 through the electric telescopic column 1214, and a sleeve 1216 is rotatably connected to the moving plate 1215. The sleeve 1216 is snap-fitted on the outside of the first square shaft 1213. The rotation of the first square shaft 1213 can drive the sleeve 1216 to rotate. The moving plate 1215 can move up and down under the telescopic action of the electric telescopic column 1214, thereby driving the sleeve 1216 to move up and down.

[0039] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 8 and Figure 9As shown, on the other side of the bracket 1202, a first fixed plate 1217, a second fixed plate 1222, a third fixed plate 1226 and a fourth fixed plate 1229 are fixed. A first circular gear 1218 is rotatably connected to the first fixed plate 1217. On one side of the first circular gear 1218, a second circular gear 1219 is meshed. The second circular gear 1219 is rotatably connected to the bottom of the first fixed plate 1217. A second square shaft 1220 is fixed to the bottom of the second circular gear 1219. A second belt transmission assembly 1221 is fixed to the top of the first circular gear 1218. The second belt transmission assembly 1221 is rotatably connected to the second fixed plate 1222. One side of the upper end surface of the second belt transmission assembly 1221 is connected to a first ratchet 1223. A first ratchet sleeve 1224 is sleeved outside the first ratchet 1223. A rotating shaft 1225 is fixed to the top of the first ratchet sleeve 1224. The rotating shaft 1225 is rotatably connected to the third fixed plate 1226. A third circular gear 1227 is fixed to the outside of the rotating shaft 1225. The rotating shaft 1225 passes through the intake pipe 1228 and the fourth fixed plate 1229. The other side of the upper end surface of the second belt transmission assembly 1221 is connected to a second ratchet 1230. A second ratchet sleeve 1231 is sleeved outside the second ratchet 1230. A fourth circular gear 1232 is fixed to the top of the second ratchet sleeve 1231. The fourth circular gear 1232 is rotatably connected to the third fixed plate 1226. The fourth circular gear 1232 is meshed with one side of the third circular gear 1227. After the sleeve 1216 moves upward and sleeved the first square shaft 1213 and the second square shaft 1220 together, the first belt transmission assembly 1212 operates to drive the first drill rod 1203 to rotate. At the same time, the rotation of the first square shaft 1213 drives the sleeve 1216 and the second square shaft 1220 to rotate, thereby driving the second circular gear 1219 to rotate, and then driving the first circular gear 1218 to rotate. The second belt transmission assembly 1221 operates to drive the first ratchet 1223 and the second ratchet 1230 to rotate. When the second belt transmission assembly 1221 rotates forward, the first ratchet sleeve 1224 can rotate with the forward rotation of the first ratchet 1223, thereby driving the rotating shaft 1225 and the third circular gear 1227 to rotate forward. At this time, the second ratchet sleeve 1231 does not rotate. When the second belt transmission assembly 1221 rotates in reverse, the second ratchet sleeve 1231 rotates with the reverse rotation of the second ratchet 1230, thereby driving the fourth circular gear 1232 to rotate in reverse. The rotating shaft 1225 and the third circular gear 1227 still rotate forward. Therefore, no matter whether the first drill rod 1203 rotates in one direction or rotates back and forth, the rotating shaft 1225 and the third circular gear 1227 always rotate in one direction, ensuring that the intake pipe 1228 always draws air to the right, and at the same time ensuring that the pump box 1240 always pumps water to the right.

[0040] In this embodiment, as Figure 2 、 Figure 3 、 Figure 5 and Figure 11As shown, a first bevel gear 1233 is fixed to the outside of a rotating shaft 1225, and a second bevel gear 1234 is meshed and connected to one side of the first bevel gear 1233. A blower 1235 is fixed to one side of the second bevel gear 1234. A filter screen 1236 is fixed to one side of an air inlet pipe 1228. A first connecting pipe 1237 serves to connect the air inlet pipe 1228 and a second annular pipe 1210. When the rotating shaft 1225 rotates, the blower 1235 rotates under the driving action of the first bevel gear 1233 and the second bevel gear 1234, and the air inlet pipe 1228 automatically sucks air to the right. The filter screen 1236 can play a role in blocking impurities.

[0041] In this embodiment, as Figure 2 , Figure 3 , Figure 5 and Figure 10 shown, a third bevel gear 1238 is fixed to the top of the rotating shaft 1225, and a fourth bevel gear 1239 is meshed and connected to the rear side of the third bevel gear 1238. An impeller 1241 is fixed to the rear side of the fourth bevel gear 1239, and the impeller 1241 is rotatably connected in a pump box 1240. A second connecting pipe 1242 serves to connect the pump box 1240 and a first annular pipe 1207. When the rotating shaft 1225 rotates, the impeller 1241 rotates under the driving action of the third bevel gear 1238 and the fourth bevel gear 1239, and the pump box 1240 automatically pumps water to the right.

[0042] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 12 shown, a second grouting pipe 14, a second water spraying pipe 15 and a second air jetting pipe 16 are fixed inside a second drill pipe 13. The second grouting pipe 14 is in communication with a first grouting pipe 1204, the second water spraying pipe 15 is in communication with a first water spraying pipe 1205, and the second air jetting pipe 16 is in communication with a first air jetting pipe 1208. A third grouting pipe 18, a third water spraying pipe 19 and a third air jetting pipe 20 are fixed inside a drill bit 17. The third grouting pipe 18 is in communication with the second water spraying pipe 15, the third water spraying pipe 19 is in communication with the second water spraying pipe 15, and the third air jetting pipe 20 is in communication with the second air jetting pipe 16. After the hole is drilled by the drill bit 17, the drill bit 17 rotates and rises while the slurry suction pipe 1244, the first grouting pipe 1204, the second grouting pipe 14 and the third grouting pipe 18 grout into the hole, the water suction pipe 1243, the first water spraying pipe 1205, the second water spraying pipe 15 and the third water spraying pipe 19 spray water into the hole, and the air inlet pipe 1228, the first air jetting pipe 1208, the second air jetting pipe 16 and the third air jetting pipe 20 jet air into the hole. Spraying water and jetting air while grouting can make the fusion and solidification effect better.

[0043] According to another aspect of the present invention, there is provided a method for using a high-pressure jet grouting device, comprising the following steps:

[0044] S1. First, position the drill bit 17, then connect the slurry extraction pipeline 1244 to an external feeding device. Next, the drill bit 17 rotates and descends simultaneously to perform a drilling operation. At the same time, the slide plate 10 and the movable pulley 11 descend, thereby releasing the water extraction pipeline 1243 and the slurry extraction pipeline 1244.

[0045] S2. After completing the drilling operation, the sleeve 1216 moves upward to dock the first square shaft 1213 with the second square shaft 1220. The drill bit 17 rotates and ascends simultaneously. At the same time, the slide plate 10 and the movable pulley 11 ascend, thereby retracting the water extraction pipeline 1243 and the slurry extraction pipeline 1244.

[0046] S3. The rotation of the first drill pipe 1203 is driven by the operation of the first belt drive assembly 1212. During the upward movement of the drill bit 17, the first square shaft 1213 rotates to drive the second square shaft 1220 to rotate. The second circular gear 1219 rotates to drive the first circular gear 1218 to rotate, and the second belt drive assembly 1221 operates. Whether the drill bit 17 rotates for grouting in one direction or rotates back and forth for grouting, the rotating shaft 1225 and the third circular gear 1227 always rotate in one direction under the driving action of the first ratchet 1223, the first ratchet sleeve 1224, the second ratchet 1230, the second ratchet sleeve 1231, and the fourth circular gear 1232. The blower 1235 and the impeller 1241 rotate in one direction, ensuring that the intake pipeline 1228 always sucks air to the right, the pump box 1240 always pumps water to the right, the slurry finally sprays out through the third grouting pipeline 18, the water finally sprays out through the third water spraying pipeline 19, and the air finally sprays out through the third air jetting pipeline 20, making the fusion and solidification effect better.

[0047] The working principle of this device is as follows: First, move the mobile base 1 to the required location and position the drill bit 17. Then, connect the slurry extraction pipeline 1244 to an external feeding device, which can pump slurry into the slurry extraction pipeline 1244. The first belt drive assembly 1212 operates to drive the first drill pipe 1203, the second drill pipe 13, and the drill bit 17 to rotate. At the same time, the first lead screw 5 and the second lead screw 9 rotate. While the slider 7 descends, the slide plate 10 descends. The drill bit 17 rotates and descends simultaneously, and the water extraction pipeline 1243 and the slurry extraction pipeline 1244 are released. After the drilling operation is completed, the moving plate 1215 and the sleeve 1216 move upward and sleeve the first square shaft 1213 with the second square shaft 1220. Then, the drill bit 17 rotates and ascends simultaneously, and the slide plate 10 and the movable pulley 11 ascend. The drill bit 17 rotates in a reverse direction or back and forth. The rotation of the first square shaft 1213 drives the sleeve 1216 and the second square shaft 1220 to rotate. The rotation of the second circular gear 1219 drives the first circular gear 1218 to rotate. The second belt drive assembly 1221 operates to drive the first ratchet 1223 and the second ratchet 1230 to rotate. When the second belt drive assembly 1221 rotates forward, the first ratchet sleeve 1224 rotates along with the forward rotation of the first ratchet 1223, thereby driving the rotating shaft 1225 and the third circular gear 1227 to rotate forward. The second ratchet sleeve 1231 does not rotate. When the second belt drive assembly 1221 rotates in reverse, the second ratchet sleeve 1231 rotates along with the reverse rotation of the second ratchet 1230, thereby driving the fourth circular gear 1232 to rotate in reverse. The rotating shaft 1225 and the third circular gear 1227 still rotate forward. Therefore, no matter whether the first drill pipe 1203 rotates in one direction or back and forth, the rotating shaft 1225 and the third circular gear 1227 always rotate in one direction. When the rotating shaft 1225 rotates, the fan 1235 rotates under the driving action of the first bevel gear 123 and the second bevel gear 1234. The intake pipeline 1228 always draws air to the right. The gas passes through the intake pipeline 1228, the first jet pipeline 1208, the second jet pipeline 16, and the third jet pipeline 20 in sequence and is sprayed into the hole. The impeller 1241 rotates under the driving action of the third bevel gear 1238 and the fourth bevel gear 1239. The pump box 1240 pumps water to the right. The water passes through the water extraction pipeline 1243, the first water spray pipeline 1205, the second water spray pipeline 15, and the third water spray pipeline 19 in sequence and is sprayed into the hole. Spraying water and gas simultaneously during grouting can make the fusion and solidification effect better. During the process of retracting and extending the water extraction pipeline 1243 and the slurry extraction pipeline 1244, the wheels on the first fixed pulley 2, the movable pulley 11, the second fixed pulley 3, and the pulley block 21 all rotate, which is convenient for providing support and guidance. During the drilling process, if the drilling depth is insufficient, a second drill pipe 13 can be installed between the second drill pipe 13 and the drill bit 17. And the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0048] In summary, the high-pressure jet grouting equipment and its usage method achieve the purposes of enhancing the fusion and solidification effect, supporting and guiding, and ensuring the flow directions of air and water, meeting the usage requirements of people.

[0049] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A high-pressure jet grouting device, comprising a mobile base (1), characterized in that: The upper end surface of the movable base (1) is rotatably connected with a first fixed pulley (2) and a second fixed pulley (3). The upper end surface of the movable base (1) is fixed with a slide rail (6). A slider (7) is slidably connected in the slide rail (6). A slide plate (10) is slidably connected to one side of the slide rail (6). The upper end surface of the slide plate (10) is rotatably connected with a movable pulley (11).

2. The high-pressure rotary jet grouting equipment according to claim 1, characterized in that: One side of the slider (7) is fixed with a high-pressure jet grouting mechanism (12). The high-pressure jet grouting mechanism (12) includes a support plate (1201). The upper end surface of the support plate (1201) is fixed with a support (1202). A first drill rod (1203) is rotatably connected to the support plate (1201). A first grouting pipeline (1204), a first water spraying pipeline (1205) and a first air jetting pipeline (1208) are fixed in the first drill rod (1203). A first annular pipeline (1207) and a second annular pipeline (1210) are fixed to one side of the support plate (1201).

3. A high-pressure rotary jet grouting device according to claim 2, characterized in that: The head end of the first water spraying pipeline (1205) penetrates through one side of the first drill rod (1203) and extends into the first annular pipeline (1207). The head end of the first air jetting pipeline (1208) penetrates through one side of the first drill rod (1203) and extends into the second annular pipeline (1210). The other side of the support (1202) is fixed with an air inlet pipeline (1228) and a pump box (1240). The air inlet pipeline (1228) is connected to the second annular pipeline (1210) through a first connecting pipeline (1237). The pump box (1240) is connected to the first annular pipeline (1207) through a second connecting pipeline (1242). A water pumping pipeline (1243) is fixed to the top of the pump box (1240). The head end of the first grouting pipeline (1204) is rotatably connected with a slurry pumping pipeline (1244).

4. The high-pressure rotary jet grouting equipment according to claim 3, characterized in that: A pulley block (21) is fixed to the top of the slide rail (6). The water pumping pipeline (1243) and the slurry pumping pipeline (1244) both bypass the first fixed pulley (2), the movable pulley (11), the second fixed pulley (3) and the pulley block (21) and penetrate through the support (1202).

5. A high-pressure rotary jet grouting device according to claim 4, characterized in that: The bottom of the first drill rod (1203) is fixed with a second drill rod (13) by bolts. The bottom of the second drill rod (13) is fixed with a drill bit (17) by bolts.

6. The high-pressure jet grouting equipment according to claim 1, characterized in that: A first motor (4) is fixed in the movable base (1), and the top of the first motor (4) is connected to a first lead screw (5). The first lead screw (5) is rotatably connected in the slide rail (6), and the slider (7) is threadedly connected to the outside of the first lead screw (5).

7. A high-pressure rotary jet grouting device according to claim 1, characterized in that: A second motor (8) is fixed inside the top of the slide rail (6), and the bottom of the second motor (8) is connected to a second lead screw (9). The second lead screw (9) is rotatably connected to the slide rail (6), and the slide plate (10) is threadedly connected to the outside of the second lead screw (9).

8. A high-pressure rotary jet grouting device according to claim 1, characterized in that: A first sealing ring (1206) is fixed to the outside of the first water spraying pipe (1205), and the first sealing ring (1206) is rotatably connected within a first annular pipe (1207). A second sealing ring (1209) is fixed to the outside of the first air jetting pipe (1208), and the second sealing ring (1209) is rotatably connected within a second annular pipe (1210).

9. A high-pressure jet grouting equipment according to claim 1, characterized in that: A third motor (1211) is fixed to the bottom of the support plate (1201), and the top of the third motor (1211) is connected to a first belt drive assembly (1212). The output end of the first belt drive assembly (1212) is connected to a first drill pipe (1203), and a first square shaft (1213) is fixed to the top of the first belt drive assembly (1212).

10. A high-pressure rotary jet grouting device according to claim 9, characterized in that: The upper side of the support plate (1201) is connected to a moving plate (1215) through an electric telescopic column (1214), and a sleeve (1216) is rotatably connected to the moving plate (1215). The sleeve (1216) is snap-fitted to the outside of the first square shaft (1213).

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