Percussion drill for drilling and pouring and using method thereof

Abstract

The percussion drill comprises a transfer water tank, a charging type waterproof motor is arranged below the transfer water tank, the power output end of the charging type waterproof motor faces downwards, and a driving rotating shaft is arranged below the charging type waterproof motor; the power output end of the charging type waterproof motor is fixedly connected with the upper end of a driving rotating shaft, the upper portion of the driving rotating shaft is sleeved with an upper balance weight column, the driving rotating shaft is rotationally connected with the upper balance weight column, the middle of the driving rotating shaft is sleeved with a lower balance weight column, and the driving rotating shaft is rotationally connected with the lower balance weight column. According to the drilling device, the situation that a large number of drilling rods are carried and spliced like a traditional drilling mode is not needed, operation is easy and convenient, and when the drilling device inclines during downward drilling, the position of the drilling device can be automatically adjusted, so that the drilling device is kept vertical.

Description

Technical Field

[0001] The invention relates to the field of impact drills, and in particular to an impact drill for drilling and grouting and a use method thereof. Background Art

[0002] The inverted siphon shaft is a simple water conservancy engineering structure, which is mainly composed of an inlet, an outlet, a shaft pipe body and a sand collection pit. The inlet and outlet are generally built with bricks or concrete, and the shape can be rectangular or circular. The cross-sectional size of the shaft pipe body is slightly larger than the pipe body, and a sand collection pit of a certain depth is set at the bottom to deposit silt, which is convenient for subsequent dredging and maintenance work.

[0003] At present, in the process of excavating an inverted siphon shaft, a commonly used method is to use a drilling rig to drill holes. Since the holes to be drilled are deep, the drill rods used by the drilling rig are mostly spliced.

[0004] For example, the patent with application number 202123158783.0 discloses a rotary drilling rig drill rod with a splicing structure, including a plurality of split drill rods, the plurality of split drill rods are arranged in contact with each other, the bottom ends of the plurality of split drill rods are welded with matching limit plates, the surfaces of the plurality of limit plates are provided with mounting holes corresponding to the axis, the surfaces of the plurality of limit plates are provided with a plurality of plug holes, the plurality of plug holes are surrounded by the mounting holes, and a fixing mechanism is provided between the plurality of limit plates. The utility model designs the integral drill rod in a split manner, and sets a plurality of drill rods, and the plurality of drill rods are connected and fixed by a fixing mechanism, so that the plurality of drill rods can be spliced ​​and fixed to form a drill rod. At the same time, the split design of the plurality of drill rods is used to reduce the length and type of a single drill rod, which is convenient for the transportation and manual handling of a single drill rod, and thus convenient for the operation of the staff.

[0005] For example, the patent with application number 202111244392.2 discloses a drilling device and a drilling method, including a device mainframe, a main mast, a drilling rig mainframe and a drill rod assembly, the lower end of the main mast is fixed to the device mainframe, the drilling rig mainframe can be vertically slidably connected to the main mast, the drilling rig mainframe is fixed to one end of a cable arranged in the main mast, the other end of the cable is connected to a steel cable retracting and releasing mechanism in the device mainframe, the upper end of the drill rod assembly is detachably connected to the driving end of the drilling rig mainframe, the drilling device also includes a drill rod to be spliced ​​arranged in a vertical direction and a clamping mechanism for clamping the drill rod to be spliced, the clamping mechanism is installed on one side of the main mast, when the upper end of the drill rod assembly is separated from the driving end of the drilling rig mainframe, the clamping mechanism is used to move the drill rod to be spliced ​​between the driving end of the drilling rig mainframe and the upper end of the drill rod assembly; the present invention can realize the movement of the drill rod and the splicing of the auxiliary drill rods in a mechanized manner, thereby reducing the labor intensity of the staff and improving the splicing efficiency of the drill rods to be spliced.

[0006] However, when using the above-mentioned device and similar devices, many drill rods need to be carried and the drill rods need to be continuously spliced ​​during the drilling process. For inverted siphon shafts and similar deep well excavations, the operation is too cumbersome. If the diameter of the well is large, the diameter of the required drill rod is also large, which further increases the inconvenience of carrying and operating. Summary of the invention

[0007] The purpose of the present invention is to provide a percussion drill for drilling and grouting and a method of using the same to solve the above technical problems.

[0008] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0009] A percussion drill for drilling and grouting, comprising a transfer water tank, a rechargeable waterproof motor is arranged below the transfer water tank, the power output end of the rechargeable waterproof motor faces downward, a driving shaft is arranged below the rechargeable waterproof motor, the power output end of the rechargeable waterproof motor is fixedly connected to the upper end of the driving shaft, an upper counterweight column is sleeved on the upper part of the driving shaft, the driving shaft is rotatably connected to the upper counterweight column, a lower counterweight column is sleeved on the middle part of the driving shaft, the driving shaft is rotatably connected to the lower counterweight column, a plurality of impact blades are arranged at the bottom of the driving shaft, the plurality of impact blades are arranged around the driving shaft, the impact blades are fixedly connected to the driving shaft, water injection mechanisms are installed on both the upper counterweight column and the lower counterweight column, and the water injection mechanism is connected to the transfer water tank.

[0010] Preferably, a top cover is provided on the top of the transfer water tank, and the top cover is threadedly connected to the transfer water tank.

[0011] Preferably, the water injection mechanism includes a plurality of water outlet pipes, and the plurality of water outlet pipes are arranged around the driving shaft, and the water outlet pipes sequentially pass through the upper counterweight column and the lower counterweight column, and the water outlet pipes are fixedly connected to the upper counterweight column and the lower counterweight column, and a water outlet hose is arranged above the water outlet pipe, and the lower end of the water outlet hose is fixedly connected to the upper end of the water outlet pipe, and the water outlet hose is communicated with the water outlet pipe, and the upper end of the water outlet hose is fixedly connected to the bottom of the transfer water tank, and the water outlet hose is communicated with the transfer water tank.

[0012] Preferably, the water injection mechanism further comprises a plurality of rechargeable water pumps, the rechargeable water pumps being arranged below the transfer water tank, the rechargeable water pumps being fixedly connected to the bottom of the transfer water tank, a water inlet hose being arranged below the rechargeable water pump, the water inlet end of the rechargeable water pump being fixedly connected to the upper end of the water inlet hose, the lower end of the water inlet hose being fixedly connected to the top of the upper counterweight column, a plurality of water inlet holes being arranged at the bottom of the water inlet hose, the water outlet end of the rechargeable water pump being fixedly connected to the lower end of the drain pipe, the upper end of the drain pipe penetrating the transfer water tank and extending into the transfer water tank

[0013] Preferably, a plurality of connecting rods are arranged below the rechargeable waterproof motor, the top ends of the connecting rods are fixedly connected to the rechargeable waterproof motor, and the lower ends of the connecting rods are fixedly connected to the upper counterweight column.

[0014] Preferably, a plurality of limit tubes are arranged around the driving shaft, the limit tubes are located between the upper counterweight column and the lower counterweight column, and the plurality of limit tubes are arranged in a circular array around the driving shaft, one end of the limit tube is closed, and the other end of the limit tube is fixedly connected to an adjacent water outlet pipe.

[0015] Preferably, connecting blocks are provided above and below the limiting tube, the connecting blocks are fixedly connected to the limiting tube, the connecting block located above is fixedly connected to the upper counterweight column, and the connecting block located below is fixedly connected to the lower counterweight column.

[0016] Preferably, a counterweight block is provided in the limiting tube, and the counterweight block is slidably matched with the inner wall of the limiting tube. A sealing ball is fixedly provided on the side of the counterweight block close to the water outlet pipe, and a spring is provided on the side of the counterweight block away from the water outlet pipe, one end of the spring is fixedly connected to the counterweight block, and the other end of the spring is fixedly connected to the limiting tube.

[0017] Preferably, a filter plate is provided in the transfer water tank, the edge of the filter plate is fixedly connected to the inner wall of the transfer water tank, a plurality of water seepage holes are opened on the filter plate, the upper end of the drain pipe passes through the filter plate and extends to above the filter plate, the drain pipe is fixedly connected to the filter plate, and a sealing ring is fixedly provided on the top of the transfer water tank.

[0018] The beneficial effects of the present invention are:

[0019] The present invention designs an impact drill for drilling and grouting, which uses impact blades to continuously rotate downward to scrape out the mud at the bottom of the well to form muddy water, which is transported upward to a transfer water tank to filter the mud in the water, and then the water is transported downward again. The present invention uses water as a carrier to continuously transport and remove the mud in the downward excavation process upward. Unlike the traditional drilling method, there is no need to carry and splice a large number of drill rods. The operation is simple and convenient, and the device can automatically adjust its position when tilting occurs during downward drilling to keep the device vertical. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a percussion drill for drilling and grouting and a method of using the same according to the present invention;

[0021] Figure 2 The present invention is a percussion drill for drilling and pouring and a method of using the same Figure 1 A magnified schematic diagram of part A;

[0022] Figure 3 It is a schematic diagram of the connection structure of a water outlet pipe, a stop pipe and a connection block for a percussion drill for drilling and grouting and a method for using the same according to the present invention;

[0023] Figure 4 It is a schematic diagram of the connection structure of a stopper tube, a spring, a counterweight block, and a blocking ball for a percussion drill for drilling and injection and a method for using the same according to the present invention;

[0024] Figure 5 It is a schematic diagram of the internal structure of a transfer water tank for a drilling and injection impact drill and a method for using the same according to the present invention;

[0025] Figure numerals: 1. Top cover; 2. Transfer water tank; 3. Upper counterweight column; 4. Limiting tube; 5. Lower counterweight column; 6. Water outlet pipe; 7. Driving shaft; 8. Impact blade; 10. Connecting block; 11. Spring; 12. Counterweight block; 13. Sealing ball; 14. Rechargeable waterproof motor; 15. Power output terminal; 16. Connecting rod; 17. Water inlet hole; 18. Water inlet hose; 19. Water outlet hose; 20. Rechargeable water pump; 21. Seepage hole; 22. Filter plate; 23. Drain pipe; 25. Sealing ring. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Example 1

[0030] like Figure 1-5As shown, a percussion drill for drilling and grouting includes a transfer water tank 2, a rechargeable waterproof motor 14 is arranged below the transfer water tank 2, the power output end 15 of the rechargeable waterproof motor 14 faces downward, a driving shaft 7 is arranged below the rechargeable waterproof motor 14, the power output end 15 of the rechargeable waterproof motor 14 is fixedly connected to the upper end of the driving shaft 7, an upper counterweight column 3 is sleeved on the upper part of the driving shaft 7, the driving shaft 7 is rotatably connected to the upper counterweight column 3, a lower counterweight column 5 is sleeved on the middle part of the driving shaft 7, the driving shaft 7 is rotatably connected to the lower counterweight column 5, a plurality of impact blades 8 are arranged at the bottom of the driving shaft 7, the plurality of impact blades 8 are arranged around the driving shaft 7, the impact blades 8 are fixedly connected to the driving shaft 7, water injection mechanisms are installed on both the upper counterweight column 3 and the lower counterweight column 5, and the water injection mechanism is connected to the transfer water tank 2.

[0031] When in use, first dig a cylindrical shallow well on the ground, then inject water into the well, then put the impact blade 8 of the device downward into the well, start the rechargeable waterproof motor 14, so that the rechargeable waterproof motor 14 drives the impact blade 8 to rotate through the driving shaft 7, and at the same time use the water injection mechanism to inject water into the well to dilute the soil at the bottom of the pit and make it soft, so as to facilitate the impact blade 8 to drill downward.

[0032] Example 2

[0033] like Figure 1-5 As shown, when other parts are the same as those of Example 1, the difference between this embodiment and Example 1 is that a top cover 1 is arranged on the top of the transfer water tank 2, and the top cover 1 is threadedly connected to the transfer water tank 2. The water injection mechanism includes a plurality of water outlet pipes 6, and the plurality of water outlet pipes 6 are arranged around the driving shaft 7, and the water outlet pipes 6 sequentially penetrate the upper counterweight column 3 and the lower counterweight column 5, and the water outlet pipes 6 are fixedly connected to the upper counterweight column 3 and the lower counterweight column 5, and a water outlet hose 19 is arranged above the water outlet pipe 6, and the lower end of the water outlet hose 19 is fixedly connected to the upper end of the water outlet pipe 6, and the water outlet hose 19 is communicated with the water outlet pipe 6, and the upper end of the water outlet hose 19 is fixedly connected to the bottom of the transfer water tank 2, and the water outlet hose 19 is communicated with the transfer water tank 2.

[0034] The water injection mechanism also includes a plurality of rechargeable water pumps 20, which are arranged below the transfer water tank 2 and fixedly connected to the bottom of the transfer water tank 2. A water inlet hose 18 is arranged below the rechargeable water pump 20, and a water inlet end of the rechargeable water pump 20 is fixedly connected to the upper end of the water inlet hose 18, and the lower end of the water inlet hose 18 is fixedly connected to the top of the upper counterweight column 3. A plurality of water inlet holes 17 are provided at the bottom of the water inlet hose 18, and a water outlet end of the rechargeable water pump 20 is fixedly connected to the lower end of a drain pipe 23, and the upper end of the drain pipe 23 passes through the transfer water tank 2 and extends to the rechargeable waterproof motor 14 in the transfer water tank 2. A plurality of connecting rods 16 are arranged below the rechargeable waterproof motor 14, and the top end of the connecting rod 16 is fixedly connected to the rechargeable waterproof motor 14, and the lower end of the connecting rod 16 is fixedly connected to the upper counterweight column 3. A plurality of limit tubes 4 are arranged around the driving shaft 7, and the limit tubes 4 are located between the upper counterweight column 3 and the lower counterweight column 5. The plurality of limit tubes 4 are arranged in a circular array around the driving shaft 7, and one end of the limit tube 4 is closed, and the other end of the limit tube 4 is fixedly connected to the adjacent water outlet pipe 6. A filter plate 22 is arranged in the transfer water tank 2, and the edge of the filter plate 22 is fixedly connected to the inner wall of the transfer water tank 2. A plurality of water seepage holes 21 are opened on the filter plate 22, and the upper end of the drain pipe 23 passes through the filter plate 22 and extends to the top of the filter plate 22. The drain pipe 23 is fixedly connected to the filter plate 22, and a sealing ring 25 is fixedly provided on the top of the transfer water tank 2.

[0035] When in use, fill the transfer water tank 2 with water, then thread the top cover 1 to the transfer water tank 2. The length of the water outlet hose 19 and the water inlet hose 18 is the same as or slightly longer than the required vertical shaft depth. For example, if drilling a 30-meter vertical shaft, select a water outlet hose 19 and a water inlet hose 18 longer than 30 meters.

[0036] Start the rechargeable water pump 20, which pumps out the muddy water in the well through the water inlet hole 17 and the water inlet hose 18, and then discharges it to the top of the filter disc 22 through the drain pipe 23. After the muddy water is filtered by the filter disc 22, the soil is trapped above the filter disc 22, and the water enters the bottom of the filter disc 22 through the seepage holes 21 on the filter disc 22. The filtered water below the filter disc 22 flows back to the bottom of the well through the water outlet hose 19 and the water outlet pipe 6. At the same time, the impact blade 8 rotates to scrape out the soil at the bottom of the well, which is mixed with water to form muddy water again.

[0037] This cycle is repeated, so that the impact blades 8 continuously scrape out the mud at the bottom of the well to form muddy water, which is transported upward to the transfer water tank 2 to filter the mud in the water, and then the water is transported downward again, using water as a carrier to continuously transport and remove the mud in the downward excavation process upward.

[0038] When a lot of mud accumulates in the transfer water tank 2, the top cover 1 can be opened to remove the mud in the transfer water tank 2. The transfer water tank 2, the top cover 1, and the filter plate 22 form a closed space. If too much mud accumulates above the filter plate 22 and blocks the seepage holes 21 on the filter plate 22, the water pressure in the closed space increases to flush the seepage holes 21, allowing water to flow smoothly to the bottom of the filter plate 22, so that the transfer water tank 2 can store the excavated mud and allow water to flow smoothly in the transfer water tank 2.

[0039] Example 3

[0040] like Figure 1-5 As shown, when other parts are the same as those in Example 2, the difference between this embodiment and Example 2 is that: a connection block 10 is provided above and below the position limiting tube 4, and the connection block 10 is fixedly connected to the position limiting tube 4. The connection block 10 located above is fixedly connected to the upper counterweight column 3, and the connection block 10 located below is fixedly connected to the lower counterweight column 5. A counterweight block 12 is provided in the position limiting tube 4, and the counterweight block 12 is slidably matched with the inner wall of the position limiting tube 4. A blocking ball 13 is fixedly provided on the side of the counterweight block 12 close to the outlet pipe 6, and a spring 11 is provided on the side of the counterweight block 12 away from the outlet pipe 6, and one end of the spring 11 is fixedly connected to the counterweight block 12, and the other end of the spring 11 is fixedly connected to the position limiting tube 4.

[0041] By providing the limiting tube 4, which is embedded in the well wall, the rotation of the upper counterweight column 3 and the lower counterweight column 5 in the well can be limited.

[0042] During the downward drilling process of the device, when the device tilts (taking tilting to the left as an example), the counterweight 12 and the blocking ball 13 in the upper limit pipe 4 on the left water outlet pipe 6 move away from the water outlet pipe 6, and the counterweight 12 and the blocking ball 13 in the upper limit pipe 4 on the right water outlet pipe 6 move closer to the water outlet pipe 6, so that the left blocking ball 13 moves out of the water outlet pipe 6 and no longer blocks the left water outlet pipe 6, and the right blocking ball 13 moves into the water outlet pipe 6 to block the right water outlet pipe 6, so that the water output of the left water outlet pipe 6 increases and the water output of the right water outlet pipe 6 decreases. The water flow impact force of the left water outlet pipe 6 begins to be greater than that of the right side, thereby driving the device to tilt rightward and return to normal, so that the device can automatically adjust and remain vertical during the downward drilling process.

[0043] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A percussion drill for drilling and grouting, characterized in that: The invention comprises a transfer water tank (2), a rechargeable waterproof motor (14) is arranged below the transfer water tank (2), a power output end (15) of the rechargeable waterproof motor (14) faces downward, a driving shaft (7) is arranged below the rechargeable waterproof motor (14), the power output end (15) of the rechargeable waterproof motor (14) is fixedly connected to the upper end of the driving shaft (7), an upper counterweight column (3) is sleeved on the upper part of the driving shaft (7), and the driving shaft (7) and the upper counterweight column (3) are connected to each other. (3) is rotatably connected, a lower counterweight column (5) is sleeved on the middle part of the driving shaft (7), the driving shaft (7) is rotatably connected to the lower counterweight column (5), a plurality of impact blades (8) are arranged at the bottom of the driving shaft (7), the plurality of impact blades (8) are arranged around the driving shaft (7), the impact blades (8) are fixedly connected to the driving shaft (7), and a water injection mechanism is installed on both the upper counterweight column (3) and the lower counterweight column (5), and the water injection mechanism is connected to the transfer water tank (2).

2. The percussion drill for drilling and grouting according to claim 1, characterized in that: A top cover (1) is provided on the top of the transfer water tank (2), and the top cover (1) is threadedly connected to the transfer water tank (2).

3. The percussion drill for drilling and grouting according to claim 2, characterized in that: The water injection mechanism comprises a plurality of water outlet pipes (6), the plurality of water outlet pipes (6) being arranged around the driving shaft (7), the water outlet pipes (6) sequentially passing through the upper counterweight column (3) and the lower counterweight column (5), the water outlet pipes (6) being fixedly connected to the upper counterweight column (3) and the lower counterweight column (5), a water outlet hose (19) being arranged above the water outlet pipe (6), the lower end of the water outlet hose (19) being fixedly connected to the upper end of the water outlet pipe (6), the water outlet hose (19) being communicated with the water outlet pipe (6), the upper end of the water outlet hose (19) being fixedly connected to the bottom of the transfer water tank (2), the water outlet hose (19) being communicated with the transfer water tank (2).

4. The percussion drill for drilling and grouting according to claim 3, characterized in that: The water injection mechanism further comprises a plurality of rechargeable water pumps (20), the rechargeable water pumps (20) being arranged below the transfer water tank (2), the rechargeable water pumps (20) being fixedly connected to the bottom of the transfer water tank (2), a water inlet hose (18) being arranged below the rechargeable water pump (20), a water inlet end of the rechargeable water pump (20) being fixedly connected to the upper end of the water inlet hose (18), a lower end of the water inlet hose (18) being fixedly connected to the top of the upper counterweight column (3), a plurality of water inlet holes (17) being provided at the bottom of the water inlet hose (18), a water outlet end of the rechargeable water pump (20) being fixedly connected to the lower end of a drain pipe (23), an upper end of the drain pipe (23) penetrating the transfer water tank (2) and extending into the transfer water tank (2).

5. The percussion drill for drilling and grouting according to claim 4, characterized in that: A plurality of connecting rods (16) are arranged below the rechargeable waterproof motor (14); the top ends of the connecting rods (16) are fixedly connected to the rechargeable waterproof motor (14); and the lower ends of the connecting rods (16) are fixedly connected to the upper counterweight column (3).

6. The percussion drill for drilling and grouting according to claim 5, characterized in that: A plurality of position limiting tubes (4) are arranged around the driving shaft (7), the position limiting tubes (4) are located between the upper counterweight column (3) and the lower counterweight column (5), and the plurality of position limiting tubes (4) are arranged in a circular array around the driving shaft (7), one end of the position limiting tube (4) is closed, and the other end of the position limiting tube (4) is fixedly connected to an adjacent water outlet pipe (6).

7. The percussion drill for drilling and grouting according to claim 6, characterized in that: Connecting blocks (10) are provided above and below the limiting tube (4); the connecting blocks (10) are fixedly connected to the limiting tube (4); the connecting block (10) located above is fixedly connected to the upper counterweight column (3); and the connecting block (10) located below is fixedly connected to the lower counterweight column (5).

8. The percussion drill for drilling and grouting according to claim 7, characterized in that: A counterweight (12) is arranged inside the position limiting tube (4), and the counterweight (12) is slidably matched with the inner wall of the position limiting tube (4). A sealing ball (13) is fixedly arranged on the side of the counterweight (12) close to the water outlet pipe (6), and a spring (11) is arranged on the side of the counterweight (12) away from the water outlet pipe (6). One end of the spring (11) is fixedly connected to the counterweight (12), and the other end of the spring (11) is fixedly connected to the position limiting tube (4).

9. The percussion drill for drilling and grouting according to claim 8, characterized in that: A filter plate (22) is arranged in the transfer water tank (2). The edge of the filter plate (22) is fixedly connected to the inner wall of the transfer water tank (2). A plurality of water seepage holes (21) are opened on the filter plate (22). The upper end of the drain pipe (23) passes through the filter plate (22) and extends to the top of the filter plate (22). The drain pipe (23) is fixedly connected to the filter plate (22). A sealing ring (25) is fixedly provided on the top of the transfer water tank (2).

10. The percussion drill for drilling and grouting and the method of using the same according to claim 9, characterized in that: A cylindrical shallow well is dug on the ground, and then water is injected into the well. Then, the impact blade (8) of the device is placed downward into the well, and the rechargeable waterproof motor (14) is started to drive the impact blade (8) to rotate through the driving shaft (7). At the same time, water is injected into the well using a water injection mechanism to dilute and soften the soil at the bottom of the pit, thereby facilitating the impact blade (8) to drill downward.

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