Pipe jacking machine with variable pipe jacking diameter and use method of pipe jacking machine

Abstract

The invention provides a pipe jacking machine with a variable pipe jacking diameter and a using method thereof, and relates to the field of pipe jacking machines. The pipe jacking machine with the variable pipe jacking diameter comprises a drilling device, an adjusting device and a driving device, the drilling device is arranged at the front end of the adjusting device, the driving device is arranged at the rear end of the adjusting device, the drilling device comprises a collecting shell, a through hole is formed in one side of the inner side wall of the collecting shell, and a rotating rod is rotationally connected to the front end of a screw rod; a first motor is fixedly connected to the middle of the rear end of the collecting shell, four first connecting rods are arranged on the side wall of the lantern ring in a circumferential array mode, four second connecting rods are arranged on the side wall of the rotating rod in a circumferential array mode, drilling plates are fixedly connected to the front ends of the four second connecting rods respectively, and a drill bit is fixedly connected to the front end of the rotating rod. By arranging the drilling device, the overall application range of the device is effectively widened, by arranging the driving device, the overall forward movement of the device is achieved, the overall equipment is effectively made to move forwards, by arranging the adjusting device, excavation operation is effectively conducted, and soil generated by excavation is discharged.

Description

Technical Field

[0001] The invention relates to the technical field of pipe jacking machines, and in particular to a pipe jacking machine with a variable pipe jacking diameter and a use method thereof. Background Art

[0002] In underground projects, pipe jacking construction technology is widely used in the laying of facilities such as subways, drainage pipes, power and communication lines. The working principle of traditional pipe jacking machines is to cut the underground soil layer through the front cutter or cutting tool, and push the pipe into the ground through the rear propulsion device. As the complexity of the project increases, the underground pipeline needs to choose the appropriate pipe diameter according to different geological environments, engineering requirements, and the size of the transportation pipeline.

[0003] Although the prior art uses a pipe jacking machine to install pipes in soil layers, the pipe jacking machine has a fixed diameter, which makes it inapplicable to pipes of different diameters. Therefore, those skilled in the art provide solutions to the problems raised in the above background technology. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a pipe jacking machine with a variable pipe jacking diameter and a method of using the same, which solves the problems that the pipe jacking cannot be adjusted during the pipe jacking process and that mud and sand cannot be discharged during the excavation process.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a pipe jacking machine with a variable pipe jacking diameter, comprising a drilling device, an adjusting device and a driving device, the drilling device being arranged at the front end of the adjusting device, the driving device being arranged at the rear end of the adjusting device, the drilling device comprising a collecting shell, a through hole being opened on one side of the inner wall of the collecting shell, a screw being rotatably connected to the middle part of the front end of the collecting shell, a limiting rod being fixedly connected to the upper and lower positions of the front end of the collecting shell, a rotating rod being rotatably connected to the front end of the screw, a first motor being fixedly connected to the middle part of the rear end of the collecting shell, a collar being threadedly connected to the side wall of the screw, four first connecting rods being arranged in a circular array on the side wall of the collar, four second connecting rods being arranged in a circular array on the side wall of the rotating rod, drill plates being fixedly connected to the front ends of the four second connecting rods, and a drill bit being fixedly connected to the front end of the rotating rod.

[0008] Preferably: the adjusting device comprises a first shell, a first fixed disk is fixedly connected to the front end of the first shell, a conveying pipe is fixedly connected to one side of the rear end of the first fixed disk, a second motor is fixedly connected to the rear end of the conveying pipe, a discharge pipe is fixedly connected to one side of the side wall of the conveying pipe, a spiral feeding shaft is rotatably connected to the inner wall of the conveying pipe, a fixed frame is fixedly connected to the rear end of the first fixed disk, a worm gear is rotatably connected to the middle part of the rear end of the fixed frame, a mounting frame is fixedly connected to the lower position of the rear end of the fixed frame, a worm is rotatably connected to the inner wall of the mounting frame, a third motor is fixedly connected to the other side of the mounting frame, and the first fixed disk is rotatably connected to the rear end of the collecting shell.

[0009] Preferably: the driving device includes a second shell, the side wall of the second shell has four slide grooves in a circular array, the inner wall of the second shell is slidably connected to two second fixed plates, a first telescopic rod is arranged between the two second fixed plates, a turntable is rotatably connected to the middle of the two second fixed plates, the side walls of the two second fixed plates have four sliders in a circular array, the side walls of the eight sliders are respectively fixedly connected to plug rods, the front ends of the sliders located on both sides of the two second fixed plates are respectively fixedly connected to fixed plates, two second telescopic rods are arranged between the four fixed plates, the front ends of the two turntables are respectively rotatably connected to third connecting rods, and the front end of the second shell is fixedly connected to the rear end of the first shell.

[0010] Preferably: the other ends of the four first connecting rods are rotatably connected to the middle parts of the four second connecting rods respectively, the output end of the first motor passes through the middle part of the rear end of the collecting shell and is fixedly connected to the rear end of the screw rod, the side walls of the two limit rods are slidingly connected to the rings respectively, and the through hole passes through the inner wall of the collecting shell and is connected to the inside of the conveying pipe.

[0011] Preferably: the middle part of the worm wheel passes through the middle part of the rear end of the fixing frame and is fixedly connected to the middle part of the rear end of the first motor, the output end of the third motor passes through one side of the mounting frame and is fixedly connected to the side wall of the worm, the worm is meshingly connected with the worm wheel, and the output end of the second motor passes through the rear end of the conveying pipe and is fixedly connected to the middle part of the rear end of the spiral feeding shaft.

[0012] Preferably, the eight insertion rods are slidably connected to the inner side walls of the four sliding grooves, and the other ends of the eight third connecting rods are rotationally connected to the side walls of the four sliding blocks respectively.

[0013] Preferably: a method for using a pipe jacking machine with a variable pipe jacking diameter comprises the following steps:

[0014] S1. First, place the entire device into the hole where the pipe needs to be installed, turn on the first motor to drive the screw to rotate, so that the ring can move along the screw, and drive the second connecting rod to rotate through the first connecting rod, so that the second connecting rod opens to the size of the hole to be opened;

[0015] S2, at this time, the second telescopic rod on the rear side of the second shell is extended, and the turntable can be rotated by the extension of the second telescopic rod, and the third connecting rod is driven to rotate, so that the insertion rod is inserted into the soil layer. At this time, the first telescopic rod is extended to push the second fixed plate on the front side of the second shell forward. After reaching the front, the second telescopic rod on the front side of the second shell is extended, so that the insertion rod on the front side of the second shell is inserted into the soil, thereby fixing the entire device;

[0016] S3, after the fixing is completed, the second telescopic rod on the rear side of the second housing is retracted, and the first telescopic rod is retracted, and step S2 is repeated to achieve the forward movement of the entire device;

[0017] S4. When the device as a whole moves forward, the third motor is turned on, and the worm is driven to rotate by the third motor, so that the worm can drive the worm wheel to rotate, and the soil can be excavated in the hole at this time;

[0018] S5. During the excavation process, the soil is gradually collected by the collecting shell and enters the through hole. The second motor drives the spiral feeding shaft to rotate, and the soil can be gradually discharged through the conveying pipe.

[0019] Working principle: First, put the entire device into the hole where the pipe needs to be installed, turn on the first motor 1011 to drive the screw 101 to rotate, so that the ring 102 can move along the screw 101, and drive the second connecting rod 108 to rotate through the first connecting rod 107, so that the second connecting rod 108 is opened to the aperture size of the hole to be opened, and then extend the second telescopic rod 306 on the rear side of the second shell 302. The extension of the second telescopic rod 306 can make the turntable 307 rotate, and drive the third connecting rod 305 to rotate, so that the insertion rod 3010 is inserted into the soil layer, and then extend the first telescopic rod 303 to push the second fixed plate 309 on the front side of the second shell 302 forward. After reaching the front, extend the second telescopic rod 306 on the front side of the second shell 302. Retract the rod 306 so that the insertion rod 3010 on the front side of the second shell 302 is inserted into the soil to fix the entire device. After the fixation is completed, the second telescopic rod 306 on the rear side of the second shell 302 is retracted, and the first telescopic rod 303 is retracted. At this time, the above operation is repeated to realize the forward movement of the entire device. During the forward movement of the entire device, the third motor 205 is turned on, and the third motor 205 is used to drive the worm 207 to rotate, so that the worm 207 can drive the worm wheel 206 to rotate. At this time, the hole can be excavated. During the excavation process, the soil is gradually collected by the collecting shell 104 and enters the through hole 106. The spiral feeding shaft 2011 is driven by the second motor 204 to rotate, and the soil can be gradually discharged through the conveying pipe 202.

[0020] (III) Beneficial effects

[0021] The present invention provides a pipe jacking machine with a variable pipe jacking diameter and a method for using the same. The invention has the following beneficial effects:

[0022] 1. By setting up a drilling device, first put the entire device into the hole where the pipe needs to be installed, turn on the first motor to drive the screw to rotate, so that the ring can move along the screw, and drive the second connecting rod to rotate through the first connecting rod, so that the second connecting rod opens to the size of the hole to be opened. The equipment can be adjusted according to the diameter of the pipeline, effectively improving the overall application range of the device.

[0023] 2. By setting up a driving device, the second telescopic rod on the rear side of the second shell is extended. The turntable can be rotated by extending the second telescopic rod, and the third connecting rod is driven to rotate, so that the insertion rod is inserted into the soil layer. At this time, the first telescopic rod is extended, and the second fixed plate on the front side of the second shell is pushed forward. After reaching the front, the second telescopic rod on the front side of the second shell is extended, so that the insertion rod on the front side of the second shell is inserted into the soil, thereby fixing the entire device. After the fixing is completed, the second telescopic rod on the rear side of the second shell is retracted, and the first telescopic rod is retracted. At this time, the above operation is repeated to realize the forward movement of the entire device, effectively moving the equipment forward as a whole.

[0024] 3. By setting the adjustment device, when the device moves forward as a whole, the third motor is turned on, and the worm is driven to rotate by the third motor, so that the worm can drive the worm wheel to rotate. At this time, the hole can be excavated. During the excavation process, the soil is gradually collected by the collecting shell and enters the through hole. The spiral feeding shaft is driven by the second motor to rotate, and the soil can be gradually discharged through the conveying pipe, so that the excavation operation is effectively carried out and the soil generated by the excavation is discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention;

[0026] Figure 2 It is a structural schematic diagram of the drilling device of the present invention;

[0027] Figure 3 It is a structural schematic diagram of the regulating device of the present invention;

[0028] Figure 4 It is a structural schematic diagram of the driving device of the present invention;

[0029] Figure 5 It is a side view structural schematic diagram of the present invention;

[0030] Figure 6 It is a schematic structural diagram of the regulating device of the present invention.

[0031] Among them, 1. drilling device; 101. screw; 102. collar; 103. rotating rod; 104. collecting shell; 105. limit rod; 106. through hole; 107. first connecting rod; 108. second connecting rod; 109. drilling plate; 1010. drill bit; 1011. first motor; 2. adjusting device; 201. first shell; 202. conveying pipe; 203. discharge pipe; 204. second motor; 205. third Motor; 206, worm gear; 207, worm; 208, mounting frame; 209, fixing frame; 2010, first fixing plate; 2011, spiral feeding shaft; 3, driving device; 301, slide groove; 302, second shell; 303, first telescopic rod; 304, fixing plate; 305, third connecting rod; 306, second telescopic rod; 307, turntable; 308, slider; 309, second fixing plate; 3010, plug rod. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1:

[0034] like Figure 1-6As shown, an embodiment of the present invention provides a pipe jacking machine with a variable pipe jacking diameter, including a drilling device 1, an adjusting device 2 and a driving device 3. The drilling device 1 is arranged at the front end of the adjusting device 2, and the driving device 3 is arranged at the rear end of the adjusting device 2. The drilling device 1 includes a collecting shell 104, and a through hole 106 is opened on one side of the inner wall of the collecting shell 104. A screw rod 101 is rotatably connected to the middle of the front end of the collecting shell 104. A limiting rod 105 is fixedly connected to the upper and lower positions of the front end of the collecting shell 104. A rotating rod 103 is rotatably connected to the front end of the screw 101. A first motor 1011 is fixedly connected to the middle of the rear end of the collecting shell 104. A collar 102 is threadedly connected to the side wall of the screw 101. The side wall of the collar 102 is circumferential. The array has four first connecting rods 107, and the side wall of the rotating rod 103 is in a circular array with four second connecting rods 108. The front ends of the four second connecting rods 108 are respectively fixedly connected to the drill plates 109, and the front ends of the rotating rods 103 are fixedly connected to the drill bits 1010. By setting the drilling device 1, firstly, the entire device is placed in the hole where the pipeline needs to be installed, and the first motor 1011 is turned on to drive the screw 101 to rotate, so that the ring 102 can move along the screw 101, and the second connecting rod 108 is driven to rotate by the first connecting rod 107, so that the second connecting rod 108 is opened to the aperture size that needs to be opened, and the equipment can be adjusted according to the diameter of the pipeline, effectively improving the overall application range of the device.

[0035] The adjusting device 2 includes a first housing 201, a first fixed disk 2010 is fixedly connected to the front end of the first housing 201, a conveying pipe 202 is fixedly connected to one side of the rear end of the first fixed disk 2010, a second motor 204 is fixedly connected to the rear end of the conveying pipe 202, a discharge pipe 203 is fixedly connected to one side of the side wall of the conveying pipe 202, a spiral feeding shaft 2011 is rotatably connected to the inner wall of the conveying pipe 202, a fixing frame 209 is fixedly connected to the rear end of the first fixed disk 2010, a worm gear 206 is rotatably connected to the middle of the rear end of the fixing frame 209, a mounting frame 208 is fixedly connected to the lower position of the rear end of the fixing frame 209, a worm 207 is rotatably connected to the inner wall of the mounting frame 208, and the mounting frame 208 A third motor 205 is fixedly connected to the other side, and the first fixed plate 2010 is rotatably connected to the rear end of the collecting shell 104. By setting the adjusting device 2, during the overall forward movement of the device, the third motor 205 is turned on, and the third motor 205 is used to drive the worm 207 to rotate, so that the worm 207 can drive the worm wheel 206 to rotate, and then the hole can be excavated. During the excavation process, the soil is gradually collected by the collecting shell 104 and enters the through hole 106. The spiral feeding shaft 2011 is driven to rotate by the second motor 204, and the soil can be gradually discharged through the conveying pipe 202, so that the excavation operation is effectively carried out and the soil generated by the excavation is discharged.

[0036] The driving device 3 includes a second shell 302, the side wall of the second shell 302 has four slide grooves 301 in a circular array, the inner wall of the second shell 302 is slidably connected to two second fixed plates 309, a first telescopic rod 303 is arranged between the two second fixed plates 309, a turntable 307 is rotatably connected to the middle of the two second fixed plates 309, the side walls of the two second fixed plates 309 have four sliders 308 in a circular array, the side walls of the eight sliders 308 are respectively fixedly connected to the insertion rods 3010, the front ends of the sliders 308 located on both sides of the two second fixed plates 309 are respectively fixedly connected to the fixed plates 304, two second telescopic rods 306 are arranged between the four fixed plates 304, the front ends of the two turntables 307 are respectively rotatably connected to the third connecting rods 305, the front end of the second shell 302 is fixedly connected to the rear end of the first shell 201, By setting the driving device 3, the second telescopic rod 306 on the rear side of the second shell 302 is extended. The turntable 307 can be rotated by extending the second telescopic rod 306, and the third connecting rod 305 is driven to rotate, so that the insertion rod 3010 is inserted into the soil layer. At this time, the first telescopic rod 303 is extended, and the second fixed plate 309 on the front side of the second shell 302 is pushed forward. After reaching the front, the second telescopic rod 306 on the front side of the second shell 302 is extended, so that the insertion rod 3010 on the front side of the second shell 302 is inserted into the soil, thereby fixing the entire device. After the fixing is completed, the second telescopic rod 306 on the rear side of the second shell 302 is retracted, and the first telescopic rod 303 is retracted. At this time, the above operation is repeated to realize the forward movement of the entire device, effectively moving the equipment forward as a whole.

[0037] The other ends of the four first connecting rods 107 are rotatably connected to the middle parts of the four second connecting rods 108 respectively, the output end of the first motor 1011 passes through the middle part of the rear end of the collecting shell 104 and is fixedly connected to the rear end of the screw 101, the side walls of the two limit rods 105 are slidably connected to the ring 102 respectively, the through hole 106 passes through the inner wall of the collecting shell 104 and is connected to the inside of the conveying pipe 202, the middle part of the worm gear 206 passes through the middle part of the rear end of the fixing frame 209 and is fixedly connected to the middle part of the rear end of the first motor 1011, the output end of the third motor 205 passes through one side of the mounting frame 208 and is fixedly connected to the side wall of the worm 207, the worm 207 is meshed with the worm gear 206, the output end of the second motor 204 passes through the rear end of the conveying pipe 202 and is fixedly connected to the middle part of the rear end of the spiral feeding shaft 2011, the eight insertion rods 3010 are slidably connected to the inner walls of the four slide grooves 301, and the other ends of the eight third connecting rods 305 are rotatably connected to the side walls of the four sliders 308 respectively.

[0038] A method for using a pipe jacking machine with a variable pipe jacking diameter comprises the following steps:

[0039] S1. First, place the entire device into the hole where the pipe needs to be installed, turn on the first motor 1011 to drive the screw 101 to rotate, so that the collar 102 can move along the screw 101, and drive the second connecting rod 108 to rotate through the first connecting rod 107, so that the second connecting rod 108 opens to the aperture size required for opening;

[0040] S2, at this time, the second telescopic rod 306 on the rear side of the second shell 302 is extended. The turntable 307 can be rotated by extending the second telescopic rod 306, and the third connecting rod 305 is driven to rotate, so that the insertion rod 3010 is inserted into the soil layer. At this time, the first telescopic rod 303 is extended to push the second fixing plate 309 on the front side of the second shell 302 forward. After reaching the front, the second telescopic rod 306 on the front side of the second shell 302 is extended to make the insertion rod 3010 on the front side of the second shell 302 inserted into the soil, so as to fix the entire device;

[0041] S3, after the fixing is completed, the second telescopic rod 306 on the rear side of the second housing 302 is retracted, and the first telescopic rod 303 is retracted, and step S2 is repeated to achieve the forward movement of the entire device;

[0042] S4. When the device as a whole moves forward, the third motor 205 is turned on, and the worm 207 is driven to rotate by the third motor 205, so that the worm 207 can drive the worm wheel 206 to rotate, and the soil can be excavated in the hole at this time;

[0043] S5. During the excavation process, the soil is gradually collected by the collecting shell 104 and enters the through hole 106. The second motor 204 drives the spiral feeding shaft 2011 to rotate, and the soil can be gradually discharged through the conveying pipe 202.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipe jacking machine with a variable pipe jacking diameter, comprising a drilling device (1), an adjusting device (2) and a driving device (3), wherein the drilling device (1) is arranged at the front end of the adjusting device (2), and the driving device (3) is arranged at the rear end of the adjusting device (2), characterized in that: The drilling device (1) comprises a collecting shell (104), a through hole (106) is provided on one side of the inner wall of the collecting shell (104), a screw rod (101) is rotatably connected to the middle of the front end of the collecting shell (104), a limiting rod (105) is fixedly connected to the upper and lower positions of the front end of the collecting shell (104), the front end of the screw rod (101) is rotatably connected to the rotating rod (103), the middle of the rear end of the collecting shell (104) is fixedly connected to a first motor (1011), a collar (102) is threadedly connected to the side wall of the screw rod (101), four first connecting rods (107) are arranged in a circumferential array on the side wall of the collar (102), four second connecting rods (108) are arranged in a circumferential array on the side wall of the rotating rod (103), the front ends of the four second connecting rods (108) are respectively fixedly connected to drilling plates (109), and the front end of the rotating rod (103) is fixedly connected to a drill bit (1010).

2. A pipe jacking machine with a variable pipe jacking diameter according to claim 1, characterized in that: The regulating device (2) comprises a first housing (201), the front end of the first housing (201) is fixedly connected to a first fixed disk (2010), the rear end of the first fixed disk (2010) is fixedly connected to a conveying pipe (202), the rear end of the conveying pipe (202) is fixedly connected to a second motor (204), one side of the side wall of the conveying pipe (202) is fixedly connected to a discharge pipe (203), the inner side wall of the conveying pipe (202) is rotatably connected to a spiral feeding shaft (2011), and the first A fixed frame (209) is fixedly connected to the rear end of a fixed disk (2010), a worm gear (206) is rotatably connected to the middle of the rear end of the fixed frame (209), a mounting frame (208) is fixedly connected to the lower rear end of the fixed frame (209), a worm gear (207) is rotatably connected to the inner wall of the mounting frame (208), a third motor (205) is fixedly connected to the other side of the mounting frame (208), and the first fixed disk (2010) is rotatably connected to the rear end of the collection shell (104).

3. A pipe jacking machine with a variable pipe jacking diameter according to claim 1, characterized in that: The driving device (3) comprises a second shell (302), the side wall of the second shell (302) is provided with four slide grooves (301) in a circular array, the inner side wall of the second shell (302) is slidably connected to two second fixed disks (309), a first telescopic rod (303) is arranged between the two second fixed disks (309), a rotating disk (307) is rotatably connected to the middle of the two second fixed disks (309), the side walls of the two second fixed disks (309) are provided with four sliders (308) in a circular array, the side walls of the eight sliders (308) are respectively fixedly connected to the insertion rods (3010), the front ends of the sliders (308) located on both sides of the two second fixed disks (309) are respectively fixedly connected to the fixed plates (304), two second telescopic rods (306) are arranged between the four fixed plates (304), the front ends of the two rotating disks (307) are respectively rotatably connected to the third connecting rods (305), and the front end of the second shell (302) is fixedly connected to the rear end of the first shell (201).

4. A pipe jacking machine with a variable pipe jacking diameter according to claim 1, characterized in that: The other ends of the four first connecting rods (107) are rotatably connected to the middle parts of the four second connecting rods (108), respectively; the output end of the first motor (1011) passes through the middle part of the rear end of the collecting shell (104) and is fixedly connected to the rear end of the screw rod (101); the side walls of the two limit rods (105) are slidably connected to the collar (102), respectively; and the through hole (106) passes through the inner wall of the collecting shell (104) and is connected to the interior of the conveying pipe (202).

5. A pipe jacking machine with a variable pipe jacking diameter according to claim 2, characterized in that: The middle part of the worm wheel (206) passes through the middle part of the rear end of the fixing frame (209) and is fixedly connected to the middle part of the rear end of the first motor (1011); the output end of the third motor (205) passes through one side of the mounting frame (208) and is fixedly connected to the side wall of the worm (207); the worm (207) is meshedly connected to the worm wheel (206); and the output end of the second motor (204) passes through the rear end of the conveying pipe (202) and is fixedly connected to the middle part of the rear end of the spiral feeding shaft (2011).

6. A pipe jacking machine with a variable pipe jacking diameter and a method of using the same according to claim 3, characterized in that: The eight insertion rods (3010) are slidably connected to the inner side walls of the four sliding grooves (301), and the other ends of the eight third connecting rods (305) are rotatably connected to the side walls of the four sliding blocks (308) respectively.

7. A method for using a pipe jacking machine with a variable pipe jacking diameter according to claim 1, characterized in that: The following steps are involved: S1. First, place the entire device into a hole where a pipe needs to be installed, turn on the first motor (1011) to drive the screw (101) to rotate, so that the ring (102) can move along the screw (101), and drive the second connecting rod (108) to rotate through the first connecting rod (107), so that the second connecting rod (108) opens to the size of the hole to be opened; S2, at this time, the second telescopic rod (306) on the rear side inside the second shell (302) is extended. By extending the second telescopic rod (306), the rotating disk (307) can be rotated, and the third connecting rod (305) can be driven to rotate, so that the insertion rod (3010) is inserted into the soil layer. At this time, the first telescopic rod (303) is extended to push the second fixing plate (309) on the front side inside the second shell (302) forward. After reaching the front, the second telescopic rod (306) on the front side inside the second shell (302) is extended, so that the insertion rod (3010) on the front side inside the second shell (302) is inserted into the soil, thereby fixing the entire device; S3, after the fixing is completed, the second telescopic rod (306) on the rear side inside the second shell (302) is retracted, and the first telescopic rod (303) is retracted, and step S2 is repeated to achieve the forward movement of the entire device; S4. When the device as a whole moves forward, the third motor (205) is turned on, and the worm (207) is driven to rotate by the third motor (205), so that the worm (207) can drive the worm wheel (206) to rotate, and then the soil can be excavated in the hole; S5. During the excavation process, the soil is gradually collected by the collecting shell (104) and enters the through hole (106). The second motor (204) drives the spiral feeding shaft (2011) to rotate, and the soil can be gradually discharged through the conveying pipe (202).

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