Anti-deflection ground pumping drainage drilling device

Abstract

The anti-deflection ground pumping drainage drilling device comprises a horizontally-arranged supporting platform, moving rolling wheels are rotationally installed on the side face of the supporting platform, an electric control box is fixedly installed on the upper surface of the supporting platform, and a longitudinal supporting frame of a vertical structure is fixedly installed on the upper surface of the front side of the supporting platform; and a mounting plate which is transversely arranged is mounted on the front side of the longitudinal supporting frame. According to the anti-deflection ground pumping drainage drilling device, the novel structural design is adopted, a drill rod is limited through an upper limiting sleeve and a lower limiting sleeve in the drilling process of the drill rod, and therefore the situation that the drill rod receives large resistance when drilling into the ground, and consequently position deviation occurs is avoided; due to the fact that the positions of the upper limiting sleeve and the lower limiting sleeve correspond to each other, the upper limiting sleeve is used for extruding the lower limiting sleeve when the drill rod drills to the lowermost portion, the buffering purpose is achieved under the action of the guide sliding rod and the buffering spring, and impact damage is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of coalfield drainage drilling, in particular to an anti-deflection ground drainage drilling device. Background Art

[0002] Coalfield surface extraction and drainage drilling is a technology used in coal mining and management. Its main purpose is to reduce the gas pressure in the coal seam, improve mining conditions, and improve coal mine safety and mining efficiency. By drilling holes on the ground in the coalfield to extract underground gas, the gas pressure is guaranteed to be safe during coal mining.

[0003] In the prior art, a Chinese patent with publication number CN118757080A discloses a ground pneumatic lifting drilling device, comprising: a lifting tube: an impact drill is fixed on the free end of the lifting tube, and the drill bit of the impact drill is facing upward; a cylinder: the cylinder is arranged below the lifting tube, and the output shaft of the cylinder is fixedly connected to the free end of the lifting tube; an air compressor: the air outlet of the air compressor is connected to the air cylinder; a mobile platform: the air compressor is fixed on the upper surface of the mobile platform, the cylinder is fixedly connected to the mobile platform, and the restraining end of the lifting tube is fixedly connected to the mobile platform; a pneumatic lifting device: used to control the high-pressure gas in the air compressor to be connected to the cylinder; a switch: used to control the start and stop of the impact drill.

[0004] As another example in the prior art, a Chinese patent with publication number CN110966015A discloses a drilling device for ground deep hole blasting, including a fixed platform, a slide, a drilling rig, a screw, a drill bit and an auxiliary cylinder; a hinged joint is provided on one side of the slide, the slide is hinged to the fixed platform through the hinged joint, the auxiliary cylinder is connected between the slide and the fixed platform, and the elevation angle of the slide is adjusted by the auxiliary cylinder; the drilling rig is installed on the slide and can move up and down along the slide, the output shaft of the drilling rig is connected to the screw, and the drill bit is fixed at the end of the screw; the diameter of the screw is smaller than the diameter of the drill bit, and a plurality of fixed bearings are coaxially arranged in sequence along the axial direction on the screw, and at least two retractable roller assemblies are symmetrically arranged along the radial direction of the outer ring of the fixed bearing, and the roller assembly can be contracted or popped out along the radial direction of the fixed bearing under the action of external force, and in the popped-out state, the outer ring diameter surrounded by the roller assembly is larger than the drill bit diameter.

[0005] For example, in the prior art, a Chinese patent with publication number CN117365310A discloses a drill arm assembly for ground drilling, including: a first movable arm to drive the telescopic arm to telescope relative to the first movable arm; a first amplitude modulation drive mechanism to adjust the angle of the first movable arm; a second movable arm, rotatably connected to the telescopic arm; a second amplitude modulation drive mechanism to adjust the angle of the second movable arm; a drill frame, a second telescopic drive mechanism is connected between the drill frame and the second movable arm, and an anchor rod is installed at one end of the drill frame; a mounting frame, movably mounted on the drill frame; a lifting drive mechanism, used to drive the mounting frame to move relative to the drill frame. The present invention uses the combined effect of two angle adjustments to enable the second movable arm to be adjusted to be vertical to the ground within a certain height range, and coupled with the lifting of the drill frame, the bottom of the drill frame is in contact with the ground instead of being suspended, and at the same time, the anchor rod can be inserted into the ground, thereby improving the structural stability during drilling operations and reducing vibration during drilling.

[0006] Based on the above materials, it can be seen that in the prior art, pneumatic or electric methods are generally used to drive the drill rod to move downward, so as to achieve the purpose of drilling a hole in the ground. However, in actual use, due to the long length of the drill rod, it may encounter resistance when drilling into the ground and may cause position displacement. The position displacement will affect the drilling effect and cause the drill rod to break. Summary of the invention

[0007] The object of the present invention is to provide a ground extraction drilling device with an anti-deflection function, so as to solve the problem of position deviation of the rotary rod during drilling mentioned in the background technology.

[0008] To achieve the above object, the present invention provides the following technical solution: an anti-deflection ground extraction drilling device, comprising a horizontally arranged support platform, a movable roller is rotatably installed on the side of the support platform, and an electric control box is fixedly installed on the upper surface of the support platform, and also includes: A longitudinal support frame with a vertical structure is fixedly installed on the upper surface of the front side of the support platform, and a transversely arranged mounting plate is installed on the front side of the longitudinal support frame, and the mounting plate forms an up-and-down sliding structure with the longitudinal support frame through an electric slider fixedly installed therewith, and a spray mechanism for reducing dust around the drilling hole is arranged on the left and right sides of the mounting plate; A driving motor is fixedly mounted on the upper surface of the mounting plate, and a connector is fixedly mounted on the output end of the driving motor, and a disassembly and installation structure is formed between the connector and the drill rod by a snap-fit ​​structure, and a limiting mechanism for preventing the position of the drill rod from being offset is arranged outside the drill rod; A cooling nozzle is fixedly installed on the rear side of the mounting plate, and the position of the cooling nozzle corresponds to the position of the driving motor. The cooling nozzle sprays atomized water vapor to cool the driving motor. A pressure mechanism for supplying water to the cooling nozzle is arranged at the lower rear side of the mounting plate.

[0009] Preferably, the spray mechanism includes atomizing nozzles rotatably mounted on the left and right sides of the mounting plate, and the atomizing nozzles are connected to a water storage tank via a delivery hose fixedly mounted on the side thereof, and the water storage tank is fixedly mounted on the upper surface of the supporting platform.

[0010] Preferably, a driven gear for driving the atomizing nozzle to rotate is fixedly mounted on the outer surface of the atomizing nozzle, and a torsion spring for driving the atomizing nozzle to rotate and reset is mounted outside the rotating shaft of the atomizing nozzle.

[0011] Preferably, the driven gear is meshedly connected with a driving gear on its side, and the driving gear is rotationally connected to the mounting plate, and the driving gear is configured as a semi-tooth structure.

[0012] Preferably, the driving gear rotates synchronously with the friction roller via a transmission belt connected thereto, and the friction roller is rotatably mounted below the rear side of the mounting plate, and the outer surface of the friction roller is in contact with the front side of the longitudinal support frame for friction.

[0013] Preferably, the limiting mechanism comprises an upper limiting sleeve and a lower limiting sleeve, the upper limiting sleeve is fixedly mounted below the mounting plate, and the lower limiting sleeve is mounted on the front side of the supporting platform.

[0014] Preferably, a connecting plate is fixedly installed on the rear side of the lower limit sleeve, and a limiting roller is rotatably installed inside the lower limit sleeve, and the rear end of the connecting plate slides through and slides with a guide slide rod fixedly installed on the upper surface of the support platform, and a buffer spring is installed outside the guide slide rod.

[0015] Preferably, the pressure mechanism comprises a pressure box fixedly mounted on the rear side of the upper limit sleeve, and a water inlet pipe connected to the pressure box is fixedly mounted on the rear side of the pressure box, and the water inlet pipe is connected to the delivery hose through a one-way valve.

[0016] Preferably, the pressure box is connected to the cooling nozzle via a water outlet pipe fixedly mounted on its side, and a piston plate is slidably mounted inside the pressure box, and the piston plate is always located above the water inlet pipe and the water outlet pipe.

[0017] Preferably, a push rod is fixedly mounted on the lower surface of the piston plate for driving the movement thereof, and a sliding connection is penetrated between the push rod and the pressure box, and a return spring is arranged on the outside of the push rod and located below the pressure box, and the position of the push rod corresponds to the position of the connecting plate in upper and lower directions.

[0018] Compared with the prior art, the beneficial effects of the present invention are: the anti-deflection ground extraction drilling device adopts a new structural design, the specific contents of which are as follows: 1. When drilling with a drill rod, the upper limit sleeve and the lower limit sleeve are used to limit the drill rod, so as to avoid the drill rod receiving greater resistance and position deviation when drilling into the ground. Since the positions of the upper limit sleeve and the lower limit sleeve correspond to each other, the drill rod uses the upper limit sleeve to squeeze the lower limit sleeve when drilling to the bottom. At this time, the purpose of buffering is achieved under the action of the guide slide bar and the buffer spring, reducing impact damage; Furthermore, during the drilling process, the water in the water tank is transported to the atomizing nozzle through the delivery hose by the pump body, and then the atomizing nozzle is used to spray the water out in atomization, thereby increasing the humidity of the environment around the drilling hole, thereby achieving the purpose of dust reduction and avoiding a large amount of dust from polluting the surrounding environment; Furthermore, when the mounting plate is driven downward by the electric slider to drill a hole, the friction roller fixed to the electric slider adheres to the surface of the longitudinal support frame, and the friction force between the two is used to rotate the friction roller. The friction roller drives the driving gear to rotate through the transmission belt, and the torsion spring cooperates with the meshing action of the driving gear and the driven gear to make the atomizing nozzle reciprocate (the driving gear is a half-tooth structure), thereby expanding the overall dust reduction range and achieving better dust suppression effect.

[0019] 2. When the upper limit sleeve squeezes the lower limit sleeve, the push rod is also squeezed, so that the push rod drives the piston plate in the pressure box, so that negative pressure is formed in the pressure box. Under the action of negative pressure, the water in the delivery hose is sucked into the pressure box through the water inlet pipe and the one-way valve for temporary storage; Furthermore, when the upper limit sleeve is reset upward, the push rod moves downward under the elastic action of the reset spring, so that the piston plate is used to spray the water in the pressure box through the water outlet pipe and the cooling nozzle, and the sprayed water mist is used to cool the drive motor above the mounting plate, thereby preventing the drive motor from overheating and being damaged due to long-term operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the drill rod installation position structure of the present invention; Figure 3 This is a schematic diagram of the friction roller installation position structure of the present invention; Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle; Figure 5 This is a schematic diagram of the structure of the atomizing nozzle of the present invention; Figure 6 This is a schematic diagram of the internal structure of the lower limit sleeve of the present invention; Figure 7 This is a schematic diagram of the installation position structure of the pressure box of the present invention; Figure 8 This is a schematic diagram of the connection relationship between the pressure box and the cooling nozzle of the present invention; Fig. 9 It is a schematic diagram of the internal structure of the pressure box of the present invention.

[0021] In the figure: 1. Support platform; 2. Moving roller; 3. Electric control box; 4. Longitudinal support frame; 5. Electric slider; 6. Mounting plate; 7. Driving motor; 8. Connector; 9. Drill rod; 10. Upper limit sleeve; 11. Lower limit sleeve; 1101. Limit roller; 12. Connecting plate; 13. Guide slide bar; 14. Buffer spring; 15. Atomizing nozzle; 16. Delivery hose; 17. Water storage tank; 18. Torsion spring; 19. Driven gear; 20. Driving gear; 21. Transmission belt; 22. Friction roller; 23. Pressure box; 24. Water inlet pipe; 25. One-way valve; 26. Water outlet pipe; 27. Cooling nozzle; 28. Push rod; 29. ​​Reset spring; 30. Piston plate. DETAILED DESCRIPTION

[0022] 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.

[0023] Example 1: Please refer to Figure 1 , Figure 2 and Figure 6In order to solve the problem of position deviation of the drill rod 9 during the use of the traditional device, this embodiment provides the following technical solutions, using a limiting mechanism to limit the drill rod 9 so that it keeps moving vertically downward, specifically disclosed: a horizontally arranged support platform 1, a moving roller 2 is rotatably installed on the side of the support platform 1, and an electric control box 3 is fixedly installed on the upper surface of the support platform 1, a vertically structured longitudinal support frame 4 is fixedly installed on the upper surface of the front side of the support platform 1, and a transversely arranged mounting plate 6 is installed on the front side of the longitudinal support frame 4, and the mounting plate 6 forms an up and down sliding structure with the longitudinal support frame 4 through an electric slider 5 fixedly installed therewith, and a driving motor 7 is fixedly installed on the upper surface of the mounting plate 6, A connector 8 is fixedly installed at the output end of the driving motor 7, and a disassembly and installation structure is formed between the connector 8 and the drill rod 9 by utilizing a snap-fit ​​structure. A limiting mechanism for preventing its position displacement is arranged on the outside of the drill rod 9, and the limiting mechanism includes an upper limiting sleeve 10 and a lower limiting sleeve 11. The upper limiting sleeve 10 is fixedly installed under the mounting plate 6, and the lower limiting sleeve 11 is installed on the front side of the supporting platform 1. A connecting plate 12 is fixedly installed on the rear side of the lower limiting sleeve 11, and a limiting roller 1101 is rotatably installed inside the lower limiting sleeve 11, and the rear end of the connecting plate 12 slides through a guide slide bar 13 fixedly installed on the upper surface of the supporting platform 1, and a buffer spring 14 is installed on the outside of the guide slide bar 13.

[0024] When the device is moved, the supporting platform 1 is first moved to the drilling position in the coalfield by the moving roller 2, and then the electric slider 5 and the driving motor 7 are turned on, and the driving motor 7 is used to drive the drill rod 9 to rotate through the connector 8 (when a drill rod 9 is drilled into the ground, it is removed from the connector 8 and then replaced with a new drill rod 9). At the same time, the electric slider 5 slides outside the longitudinal support frame 4, driving the mounting plate 6 to move downward synchronously, so as to feed the drill rod 9 and achieve the purpose of drilling holes on the ground. During the drilling process, the drill rod 9 is limited by the upper limit sleeve 10 and the lower limit sleeve 11 outside it (the lower limit sleeve 11 is internally rotated and installed with a limit roller 1101 to keep the drill rod 9 in the middle position). When the drill rod 9 is drilled into the ground, the upper limit sleeve 10 follows the mounting plate 6 to move to the position of squeezing the lower limit sleeve 11. At this time, the connecting plate 12 behind the lower limit sleeve 11 compresses the buffer spring 14 under the guidance of the guide slide bar 13, and the elastic effect of the buffer spring 14 is used to achieve the purpose of buffering, thereby reducing damage to the device.

[0025] Example 2: Please refer to Figure 3-Figure 5In order to solve the problem of large amount of dust polluting the environment when drilling with the traditional device, the present embodiment provides the following technical solution, which uses the spray mechanism to spray water mist to achieve the purpose of dust reduction. Specifically disclosed is: the left and right sides of the mounting plate 6 are provided with a spray mechanism for dust reduction around the drilling hole, the spray mechanism includes an atomizing nozzle 15 rotatably mounted on the left and right sides of the mounting plate 6, and the atomizing nozzle 15 is connected to the water storage tank 17 through the delivery hose 16 fixedly mounted on the side thereof, the water storage tank 17 is fixedly mounted on the upper surface of the support platform 1, and the outer surface of the atomizing nozzle 15 is fixedly mounted A driven gear 19 is provided for driving the rotation thereof, and a torsion spring 18 is installed on the outside of the rotating shaft of the atomizing nozzle 15 for driving the rotation and resetting thereof. A driving gear 20 is meshedly connected to the side of the driven gear 19, and the driving gear 20 is rotationally connected to the mounting plate 6, and the driving gear 20 is arranged as a semi-tooth structure, and the driving gear 20 rotates synchronously with the friction roller 22 through a transmission belt 21 connected thereto, and the friction roller 22 is rotationally installed at the lower rear side of the mounting plate 6, and the outer surface of the friction roller 22 is in contact with the front side of the longitudinal support frame 4 and rubs.

[0026] During the drilling process, the water pump in the water tank 17 is turned on. Under the action of the water pump, the water in the water tank 17 is transported to the atomizing nozzle 15 through the delivery hose 16. The atomizing nozzle 15 is used to spray the water in the form of atomizers, so as to achieve the purpose of reducing dust around the drilling position and avoid a large amount of dust polluting the environment. At the same time, the electric slider 5 moves downward to drive the friction roller 22 to rub against the outer surface of the longitudinal support frame 4, so that the friction roller 22 rotates. During the rotation of the friction roller 22, the driving gear 20 is driven to rotate through the transmission belt 21. At this time, the driven gear 19 meshing with the driving gear 20 is used to drive the atomizing nozzle 15 to rotate. Since the driving gear 20 is a semi-toothed structure, when it is disengaged from the meshing with the driven gear 19, the atomizing nozzle 15 is rotated and reset under the elastic reset action of the torsion spring 18, so that the reciprocating rotation of the atomizing nozzle 15 is realized to expand the overall spraying range.

[0027] Example 3: Please refer to Figure 7-Figure 9In order to solve the problem of overheating and damage of the motor caused by long-term use, the present embodiment provides the following technical solution, which uses a cooling mechanism to cool the motor. Specifically, a cooling nozzle 27 is fixedly installed on the rear side of the mounting plate 6, and the position of the cooling nozzle 27 corresponds to the position of the driving motor 7. The cooling nozzle 27 sprays atomized water vapor to cool the driving motor 7. A pressure mechanism for supplying water to the cooling nozzle 27 is provided at the lower rear side of the mounting plate 6. The pressure mechanism includes a pressure box 23 fixedly installed on the rear side of the upper limit sleeve 10, and a water inlet pipe 24 connected to the pressure box 23 is fixedly installed on the rear side of the pressure box 23, and the water inlet pipe 24 is connected to the pressure box 23. 24 is communicated with the delivery hose 16 through a one-way valve 25, the pressure box 23 is communicated with the cooling nozzle 27 through a water outlet pipe 26 fixedly installed on its side, and a piston plate 30 is slidably installed inside the pressure box 23, and the piston plate 30 is always located above the water inlet pipe 24 and the water outlet pipe 26, a push rod 28 is fixedly installed on the lower surface of the piston plate 30 for driving it to move, and the push rod 28 and the pressure box 23 are slidably connected, and a return spring 29 located below the pressure box 23 is arranged on the outside of the push rod 28, and the position of the push rod 28 corresponds to the position of the connecting plate 12 up and down.

[0028] When the upper limit sleeve 10 squeezes the lower limit sleeve 11, the push rod 28 is also squeezed. At this time, the push rod 28 is used to drive the piston plate 30 to move upward in the pressure box 23. Under the action of the piston plate 30, a negative pressure is formed inside the pressure box 23, so that the water in the delivery hose 16 is sucked into the pressure box 23 through the water inlet pipe 24 and the one-way valve 25. After that, when the upper limit sleeve 10 returns upward following the mounting plate 6, the push rod 28 drives the piston plate 30 to move downward under the elastic action of the return spring 29, so that the water stored in the pressure box 23 is sprayed out from the cooling nozzle 27 through the water outlet pipe 26, and the sprayed water mist is used to cool the drive motor 7 to avoid high-temperature damage caused by long-term continuous operation of the drive motor 7.

[0029] In the description of the invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the 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 operate in a specific orientation, and therefore cannot be understood as limiting the invention. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0030] 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. An anti-deflection ground extraction drilling device, comprising a horizontally arranged support platform (1), a movable roller (2) rotatably mounted on the side of the support platform (1), and an electric control box (3) fixedly mounted on the upper surface of the support platform (1), characterized in that: Also includes: A vertical longitudinal support frame (4) is fixedly mounted on the upper front surface of the support platform (1), and a transversely arranged mounting plate (6) is mounted on the front side of the longitudinal support frame (4), and the mounting plate (6) forms an up-and-down sliding structure with the longitudinal support frame (4) through an electric slider (5) fixedly mounted thereto, and spray mechanisms for reducing dust around the drilling hole are arranged on the left and right sides of the mounting plate (6); A drive motor (7) is fixedly mounted on the upper surface of the mounting plate (6), and a connector (8) is fixedly mounted on the output end of the drive motor (7), and a disassembly and installation structure is formed between the connector (8) and the drill rod (9) by means of a snap-fit ​​structure, and a limiting mechanism for preventing position deviation of the drill rod (9) is arranged outside the drill rod (9); A cooling nozzle (27) is fixedly mounted on the rear side of the mounting plate (6), and the position of the cooling nozzle (27) corresponds to the position of the drive motor (7). The cooling nozzle (27) sprays atomized water vapor to cool the drive motor (7), and a pressure mechanism for supplying water to the cooling nozzle (27) is provided below the rear side of the mounting plate (6).

2. The anti-deflection ground extraction drilling device according to claim 1, characterized in that: The spray mechanism comprises atomizing nozzles (15) rotatably mounted on the left and right sides of the mounting plate (6), and the atomizing nozzles (15) are connected to a water storage tank (17) via a delivery hose (16) fixedly mounted on the side thereof, and the water storage tank (17) is fixedly mounted on the upper surface of the support platform (1).

3. The anti-deflection ground extraction drilling device according to claim 2, characterized in that: A driven gear (19) is fixedly mounted on the outer surface of the atomizing nozzle (15) for driving the atomizing nozzle (15) to rotate, and a torsion spring (18) is mounted on the outside of the rotating shaft of the atomizing nozzle (15) for driving the atomizing nozzle (15) to rotate and reset.

4. The anti-deflection ground extraction drilling device according to claim 3, characterized in that: The driven gear (19) is meshedly connected to a driving gear (20) on its side, and the driving gear (20) is rotationally connected to the mounting plate (6), and the driving gear (20) is configured as a semi-tooth structure.

5. The anti-deflection ground extraction drilling device according to claim 4, characterized in that: The driving gear (20) rotates synchronously with the friction roller (22) via a transmission belt (21) connected thereto, and the friction roller (22) is rotatably mounted below the rear side of the mounting plate (6), and the outer surface of the friction roller (22) is in contact with and rubs against the front side of the longitudinal support frame (4).

6. The anti-deflection ground extraction drilling device according to claim 1, characterized in that: The limiting mechanism comprises an upper limiting sleeve (10) and a lower limiting sleeve (11); the upper limiting sleeve (10) is fixedly mounted below the mounting plate (6), and the lower limiting sleeve (11) is mounted on the front side of the supporting platform (1).

7. The anti-deflection ground extraction drilling device according to claim 6, characterized in that: A connecting plate (12) is fixedly mounted on the rear side of the lower limit sleeve (11), and a limit roller (1101) is rotatably mounted inside the lower limit sleeve (11), and a rear end of the connecting plate (12) slides through a guide slide bar (13) fixedly mounted on the upper surface of the support platform (1), and a buffer spring (14) is mounted on the outside of the guide slide bar (13).

8. The anti-deflection ground extraction drilling device according to claim 1, characterized in that: The pressure mechanism comprises a pressure box (23) fixedly mounted on the rear side of the upper limit sleeve (10), and a water inlet pipe (24) connected to the pressure box (23) is fixedly mounted on the rear side of the pressure box (23), and the water inlet pipe (24) is connected to the delivery hose (16) via a one-way valve (25).

9. The anti-deflection ground extraction drilling device according to claim 8, characterized in that: The pressure box (23) is connected to the cooling nozzle (27) via a water outlet pipe (26) fixedly mounted on the side thereof, and a piston plate (30) is slidably mounted inside the pressure box (23), and the piston plate (30) is always located above the water inlet pipe (24) and the water outlet pipe (26).

10. The anti-deflection ground extraction drilling device according to claim 9, characterized in that: A push rod (28) is fixedly mounted on the lower surface of the piston plate (30) for driving the piston plate (30) to move, and a sliding connection is formed between the push rod (28) and the pressure box (23). A return spring (29) is arranged on the outer side of the push rod (28) and is located below the pressure box (23). The position of the push rod (28) corresponds to that of the connecting plate (12) in a vertical direction.

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