High-pressure jet grouting pile machine for cofferdam construction

Abstract

The utility model relates to the technical field of high-pressure jet grouting pile machines, in particular to a cofferdam construction high-pressure jet grouting pile machine, which is characterized in that water discharged by a jet grouting mechanism is collected by a liquid supply mechanism, and after the test is completed, the jet grouting mechanism is rotated by starting a lifting mechanism, so that the jet grouting mechanism reaches the construction position; after construction is completed, the inner wall of the liquid supply mechanism is cleaned through water in the pile spraying mechanism, the outer wall of the liquid supply mechanism is cleaned by starting the spraying mechanism, and the practicability of the equipment is improved; comprising a support mechanism; the device further comprises a pile spraying mechanism, a liquid supply mechanism, a lifting mechanism, a feeding mechanism and a spraying mechanism, the pile spraying mechanism is installed on the lifting mechanism, the liquid supply mechanism, the lifting mechanism, the feeding mechanism and the spraying mechanism are all installed at the top end of the supporting mechanism, the liquid supply mechanism is located on the left side of the lifting mechanism, and the feeding mechanism is located on the right side of the lifting mechanism. The spraying mechanism is located on the left side of the liquid supply mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure jet grouting pile machines, in particular to a high-pressure jet grouting pile machine for cofferdam construction. Background Technique

[0002] A cofferdam refers to a temporary retaining structure built during engineering construction for the construction of permanent building facilities. Its function is to prevent water and soil from entering the construction location of the building, so as to drain water within the cofferdam, excavate the foundation pit, and build the building. Its main functions include controlling water flow, regulating water level, and preventing water flow erosion, etc.

[0003] According to the relationship between the axis of the cofferdam and the water flow direction, it can be divided into a transverse cofferdam that is basically perpendicular to the water flow direction and a longitudinal cofferdam that is along the water flow direction; according to whether the cofferdam allows water to pass through, it can be divided into a water-passing cofferdam and a non-water-passing cofferdam; according to the materials used for the cofferdam, there are earth-rock cofferdams, grass-earth cofferdams, concrete cofferdams, wooden cage cofferdams, steel sheet pile cofferdams, etc.

[0004] For example, in a class of existing technologies represented by the high-pressure jet grouting pile machine disclosed in the utility model patent with the application number 202220779699.6, its main structure includes a transport box, a shock-absorbing film, a connecting rod, a sliding rod, a bearing plate, a hydraulic plate, etc., and the functions of the high-pressure jet grouting machine are realized through the cooperation of structures such as the transport box, the shock-absorbing film, the connecting rod, the sliding rod, the bearing plate, and the hydraulic plate.

[0005] When the high-pressure jet grouting machine is conducting equipment inspection, in the traditional high-pressure jet grouting machine during equipment experiments, clear water is discharged, resulting in waste and affecting the construction site. Moreover, the traditional cleaning equipment can only clean the inner wall of the equipment pipeline and it is difficult to clean the outer wall of the discharge pipe. Content of the Utility Model

[0006] To solve the above technical problems, the utility model provides a high-pressure jet grouting pile machine for cofferdam construction, in which the water discharged by the jet grouting mechanism is collected by the liquid supply mechanism. After the test is completed, the jet grouting mechanism is rotated by starting the lifting mechanism to make the jet grouting mechanism reach above the construction site. After the construction is completed, the inner wall of the liquid supply mechanism is cleaned with the water in the jet grouting mechanism, and the outer wall of the liquid supply mechanism is cleaned by starting the spraying mechanism, improving the practicability of the equipment.

[0007] A high-pressure jet grouting pile machine for cofferdam construction of the utility model includes a support mechanism; it also includes a jet grouting mechanism, a liquid supply mechanism, a lifting mechanism, a feeding mechanism and a spraying mechanism. The jet grouting mechanism is installed on the lifting mechanism, and the liquid supply mechanism, the lifting mechanism, the feeding mechanism and the spraying mechanism are all installed at the top of the support mechanism. The liquid supply mechanism is located on the left side of the lifting mechanism, the feeding mechanism is located on the right side of the lifting mechanism, and the spraying mechanism is located on the left side of the liquid supply mechanism; it is connected to the support mechanism through a boosting tool, the support mechanism is moved to the construction site, the equipment is fixed by stretching the support mechanism, the discharge in the liquid supply mechanism is carried out for equipment testing by starting the jet grouting mechanism, the water discharged by the jet grouting mechanism is collected by the liquid supply mechanism, after the testing is completed, the jet grouting mechanism is rotated by starting the lifting mechanism to make the jet grouting mechanism reach above the construction site, the liquid supply mechanism is lowered to the construction site by starting the lifting mechanism, the mortar in the feeding mechanism is discharged by starting the liquid supply mechanism to carry out jet grouting on the construction site, after the construction is completed, the inner wall of the liquid supply mechanism is cleaned by the water in the jet grouting mechanism, and the outer wall of the liquid supply mechanism is cleaned by starting the spraying mechanism, improving the practicability of the equipment.

[0008] Preferably, the support mechanism includes a bottom plate, a plurality of connecting pieces, rollers and a plurality of support columns. The right ends of the plurality of connecting pieces are respectively installed at the left end of the bottom plate, the bottom ends of the rollers are installed at the bottom end of the bottom plate, the top ends of the plurality of support columns are respectively installed at the bottom end of the bottom plate, and fixing plates are arranged at the bottom ends of the plurality of support columns; it is respectively connected to the plurality of connecting pieces through a boosting tool, the rollers are rotated by boosting to move the bottom plate to the construction site, and the equipment is stabilized by stretching the plurality of support columns respectively, improving the practicability of the equipment.

[0009] Preferably, the jet grouting mechanism includes a jet grouting pipe, a mortar pump, a first three-way pipe and a first hose. The input end of the jet grouting pipe is connected to the output end of the mortar pump, the output end of the first three-way pipe is connected to the input end of the mortar pump, a plurality of input ends are arranged on the first three-way pipe, and valves are respectively arranged on the plurality of input ends of the first three-way pipe. The output end of the first hose is connected to one of the input ends of the first three-way pipe, and the other input end of the first three-way pipe is connected to the liquid supply mechanism; by starting the mortar pump, the water in the liquid supply mechanism is discharged into the jet grouting pipe through the first three-way pipe for equipment inspection, by starting, it is connected to the feeding mechanism through the first hose, and the mortar is discharged from the jet grouting pipe through the first three-way pipe to carry out jet grouting on the construction site, improving the practicability of the equipment.

[0010] Preferably, the liquid supply mechanism includes a water storage bucket, a second three-way pipe, a second hose, and a drain pipe. A filter plate is arranged inside the water storage bucket. The input end of the second three-way pipe is connected to the outer wall of the water storage bucket. The second three-way pipe is provided with a plurality of output ends, and valves are arranged on each of the plurality of output ends of the second three-way pipe. The input end of the second hose is connected to one of the output ends of the second three-way pipe. The input end of the drain pipe is connected to the outer wall of the water storage bucket, and a valve is arranged on the drain pipe. The water in the water storage bucket is discharged through the second three-way pipe respectively, discharged through the second hose into the jet grouting mechanism to detect and clean the jet grouting mechanism, discharged through another output end of the second three-way pipe to clean the outer wall of the jet grouting mechanism, and the sewage collected in the jet grouting pipe is discharged through the drain pipe, improving the practicability of the equipment.

[0011] Preferably, the lifting mechanism includes a first motor, a rotating plate, a first gear, a lead screw, a chute, a mounting rod, a second gear, and a second motor. The bottom end of the rotating plate is installed on the output end of the first motor. A bearing is arranged at the top end of the rotating plate. The inner ring of the first gear is installed on the lower part of the lead screw. The bottom end of the lead screw is installed in the bearing at the top end of the rotating plate. A slider is arranged on the lead screw, and the lead screw is installed in the chute. The rear end of the mounting rod is installed on the slider of the lead screw. The outer ring of the second gear meshes with the outer ring of the first gear, and the inner ring of the second gear is installed on the output end of the second motor. By starting the first motor, the rotating plate rotates. By starting the second motor, the second gear rotates. Through the meshing of the second gear and the first gear, the lead screw rotates. Through the rotation of the lead screw, the mounting rod rises and falls. The jet grouting mechanism is connected to the mounting rod, causing the jet grouting mechanism to rise and fall, improving the practicability of the equipment.

[0012] Preferably, the feeding mechanism includes a feed hopper, a sand storage bucket, a third motor, a first stirring shaft, and a plurality of second stirring shafts. The output end of the feed hopper is connected to the top end of the sand storage bucket. The sand storage bucket is provided with an output end. The third motor is installed at the bottom end of the sand storage bucket. The bottom end of the first stirring shaft is connected to the output end of the third motor. A plurality of second stirring shafts are arranged on the first stirring shaft, and the first stirring shaft is located inside the sand storage bucket. The mortar is discharged into the sand storage bucket through the feed hopper. By starting the third motor, the first stirring shaft rotates. Through the plurality of second stirring shafts, the mortar in the sand storage bucket is stirred respectively, making the mortar evenly mixed, improving the practicability of the equipment.

[0013] Preferably, the spraying mechanism includes a water pump, a water inlet pipe, a spraying pipe, and a plurality of support rods. The input end of the water inlet pipe is connected to the output end of the water pump. The output end of the water inlet pipe is connected to the input end of the spraying pipe. The spraying pipe is installed at the top ends of the plurality of support rods. By starting the water pump, the water in the water storage bucket is discharged into the spraying pipe through the water inlet pipe to clean the surface of the jet grouting pipe. The plurality of support rods respectively support the spraying pipe, improving the practicability of the equipment.

[0014] The beneficial effects of the present utility model compared with the prior art are as follows: By connecting the boosting tool to the support mechanism, the support mechanism is moved to the construction site. The equipment is fixed by extending the support mechanism. The liquid supply mechanism is discharged through the jet grouting mechanism for equipment testing. The water discharged by the jet grouting mechanism is collected by the liquid supply mechanism. After the testing is completed, the jet grouting mechanism is rotated by starting the lifting mechanism so that the jet grouting mechanism reaches above the construction site. The liquid supply mechanism is lowered to the construction site by starting the lifting mechanism. The mortar in the feeding mechanism is discharged by starting the liquid supply mechanism to perform jet grouting on the construction site. After the construction is completed, the inner wall of the liquid supply mechanism is cleaned with the water in the jet grouting mechanism. The outer wall of the liquid supply mechanism is cleaned by starting the spraying mechanism, improving the practicability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is an axonometric schematic diagram of the present utility model;

[0016] Figure 2 is an axonometric schematic diagram of the support mechanism of the present utility model;

[0017] Figure 3 is an axonometric schematic diagram of the jet grouting mechanism of the present utility model;

[0018] Figure 4 is an axonometric schematic diagram of the liquid supply mechanism of the present utility model;

[0019] Figure 5 is an axonometric schematic diagram of the lifting mechanism of the present utility model;

[0020] Figure 6 is a front elevation sectional view of the feeding mechanism of the present utility model;

[0021] Figure 7 is an axonometric schematic diagram of the spraying mechanism of the present utility model.

[0022] Reference numerals in the drawings: 01, support mechanism; 11, bottom plate; 12, connecting member; 13, roller; 14, support column; 02, jet grouting mechanism; 21, jet grouting pipe; 22, mortar pump; 23, first three-way pipe; 24, first hose; 03, liquid supply mechanism; 31, water storage bucket; 32, second three-way pipe; 33, second hose; 34, drain pipe; 04, lifting mechanism; 41, first motor; 42, rotating plate; 43, first gear; 44, lead screw; 45, chute; 46, mounting rod; 47, second gear; 48, second motor; 05, feeding mechanism; 51, feed hopper; 52, sand storage bucket; 53, third motor; 54, first stirring shaft; 55, second stirring shaft; 06, spraying mechanism; 61, water pump; 62, water inlet pipe; 63, spraying pipe; 64, support rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive. Embodiment

[0024] As Figure 1 shown, a high-pressure rotary jet grouting pile machine for cofferdam construction includes a support mechanism 01; it also includes a jet grouting mechanism 02, a liquid supply mechanism 03, a lifting mechanism 04, a feeding mechanism 05, and a spraying mechanism 06. The jet grouting mechanism 02 is installed on the lifting mechanism 04. The liquid supply mechanism 03, the lifting mechanism 04, the feeding mechanism 05, and the spraying mechanism 06 are all installed at the top of the support mechanism 01. The liquid supply mechanism 03 is located on the left side of the lifting mechanism 04, the feeding mechanism 05 is located on the right side of the lifting mechanism 04, and the spraying mechanism 06 is located on the left side of the liquid supply mechanism 03;

[0025] Connect the support mechanism 01 to the construction site through a boosting tool, move the support mechanism 01 to the construction site, fix the equipment by extending the support mechanism 01, conduct equipment testing by starting the jet grouting mechanism 02 to discharge the liquid in the liquid supply mechanism 03. The water discharged by the jet grouting mechanism 02 is collected by the liquid supply mechanism 03. After the testing is completed, rotate the jet grouting mechanism 02 by starting the lifting mechanism 04 so that the jet grouting mechanism 02 reaches above the construction site. Lower the liquid supply mechanism 03 to the construction site by starting the lifting mechanism 04, and discharge the mortar in the feeding mechanism 05 to conduct jet grouting on the construction site by starting the liquid supply mechanism 03. After the construction is completed, clean the inner wall of the liquid supply mechanism 03 with the water in the jet grouting mechanism 02, and clean the outer wall of the liquid supply mechanism 03 by starting the spraying mechanism 06 to improve the practicability of the equipment;

[0026] As Figure 2 shown, the support mechanism 01 includes a bottom plate 11, a plurality of connecting pieces 12, rollers 13, and a plurality of support columns 14. The right ends of the plurality of connecting pieces 12 are respectively installed at the left end of the bottom plate 11. The bottom end of the roller 13 is installed at the bottom end of the bottom plate 11. The top ends of the plurality of support columns 14 are respectively installed at the bottom end of the bottom plate 11, and fixing plates are provided at the bottom ends of the plurality of support columns 14;

[0027] As Figure 3 shown, the jet grouting mechanism 02 includes a jet grouting pipe 21, a mortar pump 22, a first three-way pipe 23, and a first hose 24. The input end of the jet grouting pipe 21 is connected to the output end of the mortar pump 22. The output end of the first three-way pipe 23 is connected to the input end of the mortar pump 22. The first three-way pipe 23 is provided with a plurality of input ends, and valves are respectively provided on the plurality of input ends of the first three-way pipe 23. The output end of the first hose 24 is connected to one of the input ends of the first three-way pipe 23, and the other input end of the first three-way pipe 23 is connected to the liquid supply mechanism 03;

[0028] As Figure 4 shown, the liquid supply mechanism 03 includes a water storage bucket 31, a second three-way pipe 32, a second hose 33 and a drain pipe 34. A filter plate is arranged in the water storage bucket 31. The input end of the second three-way pipe 32 is connected to the outer wall of the water storage bucket 31. The second three-way pipe 32 is provided with a plurality of output ends, and valves are arranged on the plurality of output ends of the second three-way pipe 32. The input end of the second hose 33 is connected to one of the output ends of the second three-way pipe 32. The input end of the drain pipe 34 is connected to the outer wall of the water storage bucket 31, and a valve is arranged on the drain pipe 34;

[0029] Connect to multiple connectors 12 respectively through a boosting tool, rotate the roller 13 through boosting to move the bottom plate 11 to the construction site, make the equipment stable by stretching multiple support columns 14 respectively, start the mortar pump 22 to discharge the water in the liquid supply mechanism 03 to the jet grouting pipe 21 through the first three-way pipe 23 for equipment inspection. Start, connect to the feeding mechanism 05 through the first hose 24, and discharge the mortar through the first three-way pipe 23 to the jet grouting pipe 21 for jet grouting at the construction site. The water in the water storage bucket 31 is discharged respectively through the second three-way pipe 32, discharged to the jet grouting mechanism 02 through the second hose 33 for detecting and cleaning the jet grouting mechanism 02, and discharged through another output end of the second three-way pipe 32 to clean the outer wall of the jet grouting mechanism 02. The sewage collected in the jet grouting pipe 21 is discharged through the drain pipe 34 to improve the practicability of the equipment. Embodiment

[0030] As Figure 5 and Figure 6 shown, on the basis of Embodiment 1, it further includes a lifting mechanism 04 and a feeding mechanism 05. The lifting mechanism 04 includes a first motor 41, a rotating plate 42, a first gear 43, a lead screw 44, a chute 45, a mounting rod 46, a second gear 47 and a second motor 48. The bottom end of the rotating plate 42 is installed on the output end of the first motor 41. A bearing is arranged at the top end of the rotating plate 42. The inner ring of the first gear 43 is installed on the lower part of the lead screw 44. The bottom end of the lead screw 44 is installed in the bearing at the top end of the rotating plate 42. A slider is arranged on the lead screw 44. The lead screw 44 is installed in the chute 45. The rear end of the mounting rod 46 is installed on the slider of the lead screw 44. The outer ring of the second gear 47 meshes with the outer ring of the first gear 43. The inner ring of the second gear 47 is installed on the output end of the second motor 48; The feeding mechanism 05 includes a feed hopper 51, a sand storage bucket 52, a third motor 53, a first stirring shaft 54 and a plurality of second stirring shafts 55. The output end of the feed hopper 51 is connected to the top end of the sand storage bucket 52. The sand storage bucket 52 is provided with an output end. The third motor 53 is installed at the bottom end of the sand storage bucket 52. The bottom end of the first stirring shaft 54 is connected to the output end of the third motor 53. A plurality of second stirring shafts 55 are arranged on the first stirring shaft 54. The first stirring shaft 54 is located in the sand storage bucket 52;

[0031] The rotating plate 42 is rotated by starting the first motor 41, the second gear 47 is rotated by starting the second motor 48, the lead screw 44 is rotated through the engagement of the second gear 47 and the first gear 43, the mounting rod 46 is raised and lowered through the rotation of the lead screw 44, the jet grouting mechanism 02 is connected to the mounting rod 46, the jet grouting mechanism 02 is raised and lowered, the mortar is discharged into the sand storage bucket 52 through the feed hopper 51, the first stirring shaft 54 is rotated by starting the third motor 53, and the mortar in the sand storage bucket 52 is stirred by a plurality of second stirring shafts 55 respectively, so that the mortar is uniformly mixed, improving the practicability of the equipment. Embodiment

[0032] As Figure 7 shown, on the basis of Embodiment 1, a spraying mechanism 06 is further included. The spraying mechanism 06 includes a water pump 61, a water inlet pipe 62, a spraying pipe 63 and a plurality of support rods 64. The input end of the water inlet pipe 62 is connected to the output end of the water pump 61, the output end of the water inlet pipe 62 is connected to the input end of the spraying pipe 63, and the spraying pipe 63 is installed at the top ends of the plurality of support rods 64;

[0033] By starting the water pump 61, the water in the water storage bucket 31 is discharged into the spraying pipe 63 through the water inlet pipe 62 to clean the surface of the jet grouting pipe 21, and the plurality of support rods 64 respectively support the spraying pipe 63, improving the practicability of the equipment.

[0034] As Figures 1 to 7As shown in the figure, for a high-pressure jet grouting rig for cofferdam construction of the present utility model, when it works, first, a boosting tool is respectively connected to a plurality of connectors 12. Through boosting, the rollers 13 rotate, causing the bottom plate 11 to move to the construction site. The equipment is stabilized by extending a plurality of support columns 14 respectively. Then, by starting the mortar pump 22, the water in the liquid supply mechanism 03 is discharged into the jet grouting pipe 21 through the first three-way pipe 23 to inspect the equipment. By starting, it is connected to the feeding mechanism 05 through the first hose 24, and the mortar is discharged from the jet grouting pipe 21 through the first three-way pipe 23 to perform jet grouting on the construction site. After that, the water in the water storage bucket 31 is discharged respectively through the second three-way pipe 32, and is discharged into the jet grouting mechanism 02 through the second hose 33 to detect and clean the jet grouting mechanism 02. It is discharged through another output end of the second three-way pipe 32 to clean the outer wall of the jet grouting mechanism 02. The sewage collected in the jet grouting pipe 21 is discharged through the drain pipe 34. Then, by starting the first motor 41, the rotating plate 42 rotates. By starting the second motor 48, the second gear 47 rotates. The lead screw 44 rotates through the meshing of the second gear 47 and the first gear 43. The mounting rod 46 rises and falls through the rotation of the lead screw 44. The jet grouting mechanism 02 is connected to the mounting rod 46, causing the jet grouting mechanism 02 to rise and fall. After that, the mortar is discharged into the sand storage bucket 52 through the feeding hopper 51. By starting the third motor 53, the first stirring shaft 54 rotates, and the mortar in the sand storage bucket 52 is stirred respectively by a plurality of second stirring shafts 55 to make the mortar evenly mixed. Finally, by starting the water pump 61, the water in the water storage bucket 31 is discharged into the spray pipe 63 through the water inlet pipe 62 to clean the surface of the jet grouting pipe 21. A plurality of support rods 64 respectively support the spray pipe 63, improving the practicability of the equipment.

[0035] The mortar pump 22, the first motor 41, the second motor 48, the third motor 53 and the water pump 61 of the present utility model are purchased on the market. Those skilled in the art only need to install and operate according to the attached operation manuals, without the need for creative labor from those skilled in the art.

[0036] The main functions achieved by the present utility model are: the water discharged by the jet grouting mechanism 02 is collected by the liquid supply mechanism 03. After the test is completed, the jet grouting mechanism 02 is rotated by starting the lifting mechanism 04, causing the jet grouting mechanism 02 to reach above the construction site. After the construction is completed, the inner wall of the liquid supply mechanism 03 is cleaned by the water in the jet grouting mechanism 02. The outer wall of the liquid supply mechanism 03 is cleaned by starting the spray mechanism 06, improving the practicability of the equipment.

[0037] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present utility model, several improvements and modifications can still be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A high-pressure jet grouting pile machine for cofferdam construction, comprising a support mechanism (01); characterized in that, It also includes a jet grouting mechanism (02), a liquid supply mechanism (03), a lifting mechanism (04), a feeding mechanism (05) and a spraying mechanism (06). The jet grouting mechanism (02) is installed on the lifting mechanism (04). The liquid supply mechanism (03), the lifting mechanism (04), the feeding mechanism (05) and the spraying mechanism (06) are all installed at the top of the support mechanism (01). The liquid supply mechanism (03) is located on the left side of the lifting mechanism (04). The feeding mechanism (05) is located on the right side of the lifting mechanism (04). The spraying mechanism (06) is located on the left side of the liquid supply mechanism (03).

2. The high-pressure rotary jet grouting rig for cofferdam construction according to claim 1, characterized in that, The support mechanism (01) includes a bottom plate (11), a plurality of connecting pieces (12), rollers (13) and a plurality of support columns (14). The right ends of the plurality of connecting pieces (12) are respectively installed at the left end of the bottom plate (11). The bottom end of the roller (13) is installed at the bottom end of the bottom plate (11). The top ends of the plurality of support columns (14) are respectively installed at the bottom end of the bottom plate (11), and fixing plates are provided at the bottom ends of the plurality of support columns (14).

3. The high-pressure rotary jet grouting rig for cofferdam construction according to claim 1, characterized in that, The jet grouting mechanism (02) includes a jet grouting pipe (21), a mortar pump (22), a first three-way pipe (23) and a first hose (24). The input end of the jet grouting pipe (21) is connected to the output end of the mortar pump (22). The output end of the first three-way pipe (23) is connected to the input end of the mortar pump (22). The first three-way pipe (23) is provided with a plurality of input ends, and valves are respectively provided on the plurality of input ends of the first three-way pipe (23). The output end of the first hose (24) is connected to one of the input ends of the first three-way pipe (23). The other input end of the first three-way pipe (23) is connected to the liquid supply mechanism (03).

4. A high-pressure jet grouting pile rig for cofferdam construction according to claim 1, characterized in that, The liquid supply mechanism (03) includes a water storage bucket (31), a second three-way pipe (32), a second hose (33) and a drain pipe (34). A filter plate is provided inside the water storage bucket (31). The input end of the second three-way pipe (32) is connected to the outer wall of the water storage bucket (31). The second three-way pipe (32) is provided with a plurality of output ends, and valves are provided on the plurality of output ends of the second three-way pipe (32). The input end of the second hose (33) is connected to one of the output ends of the second three-way pipe (32). The input end of the drain pipe (34) is connected to the outer wall of the water storage bucket (31), and a valve is provided on the drain pipe (34).

5. A high-pressure jet grouting pile rig for cofferdam construction according to claim 1, characterized in that, The lifting mechanism (04) includes a first motor (41), a rotating plate (42), a first gear (43), a lead screw (44), a chute (45), a mounting rod (46), a second gear (47) and a second motor (48). The bottom end of the rotating plate (42) is mounted on the output end of the first motor (41). A bearing is provided at the top end of the rotating plate (42). The inner ring of the first gear (43) is mounted on the lower part of the lead screw (44). The bottom end of the lead screw (44) is mounted in the bearing at the top end of the rotating plate (42). A slider is provided on the lead screw (44). The lead screw (44) is mounted in the chute (45). The rear end of the mounting rod (46) is mounted on the slider of the lead screw (44). The outer ring of the second gear (47) meshes with the outer ring of the first gear (43). The inner ring of the second gear (47) is mounted on the output end of the second motor (48).

6. The high-pressure rotary jet grouting rig for cofferdam construction according to claim 1, wherein, The feeding mechanism (05) includes a feed hopper (51), a sand storage barrel (52), a third motor (53), a first stirring shaft (54) and a plurality of second stirring shafts (55). The output end of the feed hopper (51) is connected to the top end of the sand storage barrel (52). An output end is provided on the sand storage barrel (52). The third motor (53) is mounted at the bottom end of the sand storage barrel (52). The bottom end of the first stirring shaft (54) is connected to the output end of the third motor (53). A plurality of second stirring shafts (55) are provided on the first stirring shaft (54). The first stirring shaft (54) is located inside the sand storage barrel (52).

7. The high-pressure rotary jet grouting rig for cofferdam construction according to claim 1, characterized in that, The spraying mechanism (06) includes a water pump (61), a water inlet pipe (62), a spray pipe (63) and a plurality of support rods (64). The input end of the water inlet pipe (62) is connected to the output end of the water pump (61). The output end of the water inlet pipe (62) is connected to the input end of the spray pipe (63). The spray pipe (63) is mounted at the top ends of a plurality of support rods (64).

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