A pile drilling device

Abstract

The utility model discloses a foundation pile drilling device, including a U-shaped base, a drill rod is arranged in the U-shaped base, support plates are fixedly connected to both sides of the top of the U-shaped base, the tops of the two support plates are fixedly connected to the same top plate, a multi-stage hydraulic cylinder is embedded and fixed at the bottom of the top plate, a driving motor is fixedly connected to the bottom end of the output shaft of the multi-stage hydraulic cylinder, the multi-stage hydraulic cylinder is used to drive the driving motor to move vertically, and the same moving plate is provided on the sliding sleeves of the two support plates. Through the arrangement of a series of structures, the utility model can shield the stones or pebbles splashing around the drilling hole during the drilling process, reduce the situation where the stones or pebbles splash onto the construction workers, reduce safety hazards, and can suck, filter and collect the dust generated during the drilling process, which can effectively reduce the impact of the dust drifting to the outside on the environment and the workers, and meet the use requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundation drilling equipment, in particular to a pile foundation drilling device. Background Art

[0002] In construction, it is often necessary to drill holes in foundation piles, which requires a drilling machine. A drilling machine is a device that uses a tool that is harder and sharper than the target object to drill holes through rotary cutting or rotary extrusion. The foundation pile drilling devices currently on the market are prone to splashing broken soil, gravel, etc. during the drilling process, and the splashes will cause some safety hazards to construction workers. In addition, the dust generated during the drilling process will drift outward and affect the external environment and the respiratory tract of the workers, which cannot meet the use requirements. Based on the above situation, we have proposed a foundation pile drilling device. Utility Model Content

[0003] The utility model aims to solve the shortcomings in the prior art and proposes a foundation pile drilling device.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A pile drilling device comprises a U-shaped base, a drill rod is arranged in the U-shaped base, support plates are fixedly connected to both sides of the top of the U-shaped base, the tops of the two support plates are fixedly connected to the same top plate, a multi-stage hydraulic cylinder is embedded and fixed at the bottom of the top plate, the bottom end of the output shaft of the multi-stage hydraulic cylinder is fixedly connected to a driving motor, the multi-stage hydraulic cylinder is used to drive the driving motor to move vertically, a same moving plate is slidingly sleeved on the two support plates, the drill rod is rotatably installed at the bottom of the moving plate, the bottom end of the output shaft of the driving motor is fixedly connected to the top of the drill rod, the driving motor is used to drive the drill rod to rotate, a shielding cover with an opening at the bottom is arranged in the U-shaped base, the shielding cover is sleeved on the drill rod, the shielding cover is used to shield the periphery of the drill rod, a suction mechanism is installed on the shielding cover, and the suction mechanism is used to In order to suck the inside of the shielding hood, the bottom of both sides of the shielding hood is fixedly connected with the same vertical driving mechanism, the vertical driving mechanism is used to drive the shielding hood to move vertically, the vertical driving mechanism is fixedly connected to the inner walls of both sides of the U-shaped base, the bottom and left side of the top plate are provided with the same L-shaped hole, the left side of the bottom of the top plate is fixedly connected with a conical hood connected to the inside of the L-shaped hole, the bottom of the conical hood is connected and fixed to the top of the suction mechanism, the conical hood is used to achieve the connection between the L-shaped hole and the suction mechanism, a filtering mechanism is installed in the L-shaped hole, the top of the filtering mechanism extends to the top of the top plate, the filtering mechanism is used to filter and shield the dust in the sucked gas, the left side of the top plate is fixedly connected with an air pump, the right side of the air pump is the extraction end and is connected to the left side of the L-shaped hole, and the air pump provides suction force.

[0006] Preferably, the suction mechanism includes a rectangular annular groove opened at the top of the shielding hood, and a circular frame matching the rectangular annular groove is fixedly connected to the top of the shielding hood, and multiple suction pipes inclined downward are embedded and fixed on the inner walls of the four sides of the shielding hood, and the multiple suction pipes are connected with the interior of the rectangular annular groove, and the interior of the shielding hood is sucked through the suction pipes. The adhesive sleeve in the shielding hood is provided with a sound-absorbing sleeve, and the sound-absorbing sleeve can absorb the generated noise. The sound-absorbing sleeve is fixedly sleeved on the multiple suction pipes, and the sound-absorbing sleeve and the circular frame are both sleeved on the drill rod. A vertical pipe connected to the interior of the rectangular annular groove is embedded and fixed on the left side of the top of the circular frame, and a telescopic hose is connected and fixed to the top of the vertical pipe. The telescopic characteristics of the telescopic hose can provide the vertical pipe with a space distance for moving downward, and the movable plate is sleeved on the vertical pipe, and the top of the telescopic hose is connected and fixed to the bottom of the conical hood.

[0007] Preferably, the vertical driving mechanism comprises two connecting blocks, and the sides of the two connecting blocks close to each other are respectively fixedly connected to the bottom of both sides of the shielding cover, and multi-stage electric telescopic rods are fixedly connected to the inner walls on both sides of the U-shaped base, and the bottom end of the output shaft of the multi-stage electric telescopic rod is fixedly connected to the top of the corresponding connecting block, and the multi-stage electric telescopic rod is used to drive the corresponding connecting block to move vertically, and a synchronous control switch is fixedly connected to the front side of the multi-stage electric telescopic rod on the left side, and a pressure sensor is embedded and fixed on the left side of the bottom of the shielding cover, and the pressure sensor and the two multi-stage electric telescopic rods are electrically connected to the synchronous control switch, and a circular rubber ring is adhesively fixed to the bottom of the shielding cover, and the top left side of the circular rubber ring is movably in contact with the bottom of the pressure sensor, and the pressure sensor is used to detect the extrusion force of the circular rubber ring, and the synchronous control switch can control the two multi-stage electric telescopic rods to open synchronously.

[0008] Preferably, the filtering mechanism includes an L-shaped filter plate movably mounted in the L-shaped hole, the L-shaped filter plate is magnetically fixed to the bottom inner wall of the L-shaped hole, the top of the L-shaped filter plate is fixedly connected to a rectangular block, the top of the rectangular block is flush with the top of the top plate, the top plate is movably mounted on the rectangular block, the top of the rectangular block is fixedly connected to a pull ring, and the L-shaped filter plate can be moved out of the L-shaped hole through the pull ring and the rectangular block.

[0009] Preferably, a first through hole is formed on the top inner wall of the shielding cover, a second through hole is formed on the top inner wall of the sound absorbing sleeve, and the drill rod is located in the first through hole and the second through hole and does not contact the inner walls of the first through hole and the second through hole.

[0010] Preferably, a third through hole is opened on the left side of the top of the movable plate, and the vertical pipe is located in the third through hole and does not contact the inner wall of the third through hole.

[0011] Preferably, a circular hole is opened on the top of the movable plate, a bearing is fixedly sleeved in the circular hole, and the inner side of the inner ring of the bearing is fixedly connected to the outer side of the drill rod.

[0012] Compared with the existing technology, the beneficial effects of the utility model are:

[0013] 1. Through the combination of multi-stage hydraulic cylinders, drive motors and drill rods, it can be used for pile drilling operations;

[0014] 2. Through the cooperation of the shielding cover and the vertical driving mechanism, the shielding cover can be driven to move downward during the drilling process to shield the stones or gravel splashing from the drilling position, thereby reducing the situation where stones or gravel splash onto the construction workers and reducing safety hazards;

[0015] 3. The air pump, suction mechanism, conical cover, L-shaped hole and filtering mechanism are used together to collect the dust generated during the drilling process, which can effectively reduce the impact of dust drifting to the outside on the environment and workers;

[0016] The utility model adopts a series of structural settings to shield the stones or gravel flying around the drill hole during the drilling process, reduce the situation where the stones or gravel fly onto the construction workers, reduce safety hazards, and can suck, filter and collect the dust generated during the drilling process, which can effectively reduce the impact of dust drifting to the outside on the environment and workers, thereby meeting the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a pile foundation drilling device proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the main cross-sectional structure of a pile foundation drilling device proposed by the utility model;

[0019] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of part A;

[0020] Figure 4 for Figure 2 Schematic diagram of the enlarged structure of part B.

[0021] In the figure: 100, U-shaped base; 101, support plate; 102, top plate; 103, drive motor; 104, drill rod; 1, multi-stage hydraulic cylinder; 2, moving plate; 3, shielding cover; 4, circular frame; 5, first perforation; 6, connecting block; 7, multi-stage electric telescopic rod; 8, circular rubber ring; 9, rectangular annular groove; 10, suction pipe; 11, sound-absorbing sleeve; 12, pressure sensor; 13, vertical pipe; 14, telescopic hose; 15, conical cover; 16, L-shaped hole; 17, air pump; 18, L-shaped filter plate. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-4 A foundation pile drilling device comprises a U-shaped base 100, two universal wheels are rotatably installed on both sides of the bottom of the U-shaped base 100, and the entire device can be moved by four universal wheels. A drill rod 104 is arranged in the U-shaped base 100, and support plates 101 are fixedly connected to both sides of the top of the U-shaped base 100. The tops of the two support plates 101 are fixedly connected to the same top plate 102, and a multi-stage hydraulic cylinder 1 is embedded and fixed at the bottom of the top plate 102, wherein an embedding hole for fixing the multi-stage hydraulic cylinder 1 is opened at the bottom of the top plate 102, and a driving motor 103 is fixedly connected to the bottom end of the output shaft of the multi-stage hydraulic cylinder 1, and the multi-stage hydraulic cylinder 1 is used to drive the driving motor 103 to move vertically, and a sliding sleeve is arranged on the two support plates 101. There is a same moving plate 2, wherein two sliding holes are provided on the top of the moving plate 2, and the inner walls of the sliding holes are in sliding contact with the outer sides of the corresponding support plates 101, and the drill rod 104 is rotatably installed on the bottom of the moving plate 2, wherein a circular hole is provided on the top of the moving plate 2, and a bearing is fixedly sleeved in the circular hole, and the inner side of the inner ring of the bearing is fixedly connected to the outer side of the drill rod 104, and the bearing serves to provide a rotatable installation for the drill rod 104, and the bottom end of the output shaft of the driving motor 103 is fixedly connected to the top end of the drill rod 104, and the driving motor 103 is used to drive the drill rod 104 to rotate, and a shielding cover 3 with an opening at the bottom is provided in the U-shaped base 100, and the shielding cover 3 is sleeved on the drill rod 104, and the shielding cover 3 is used to shield the surroundings of the drill rod 104;

[0024] A suction mechanism is installed on the shielding cover 3, wherein the suction mechanism includes a rectangular annular groove 9 opened at the top of the shielding cover 3, and a circular frame 4 matching the rectangular annular groove 9 is fixedly connected to the top of the shielding cover 3, and the circular frame 4 is used to shield the top of the rectangular annular groove 9, and multiple suction pipes 10 inclined downward are embedded and fixed on the inner walls of the four sides of the shielding cover 3, and the multiple suction pipes 10 are all connected with the inside of the rectangular annular groove 9, wherein a plurality of first mounting holes are opened on the inner wall of the rectangular annular groove 9, and the inner wall of the first mounting hole is fixedly connected to the outer side of the corresponding suction pipe 10, and the inside of the shielding cover 3 is sucked through the suction pipe 10, and a sound-absorbing sleeve 11 is provided in the adhesive sleeve inside the shielding cover 3, and the setting of the sound-absorbing sleeve 11 can absorb the generated noise, and the sound-absorbing sleeve 11 is fixedly sleeved on the multiple suction pipes 10, wherein a plurality of second mounting holes are opened on the side wall of the sound-absorbing sleeve 11, and the inner wall of the second mounting hole is connected to the corresponding The outside of the suction pipe 10 is fixedly connected, the sound-absorbing sleeve 11 and the circular frame 4 are both sleeved on the drill rod 104, wherein a first through-hole 5 is opened on the top inner wall of the shielding cover 3, and a second through-hole is opened on the top inner wall of the sound-absorbing sleeve 11. The drill rod 104 is located in the first through-hole 5 and the second through-hole and does not contact the inner wall of the first through-hole 5 and the inner wall of the second through-hole. The first through-hole and the second through-hole are used for the drill rod 104 to pass through. A vertical pipe 13 connected to the inside of the rectangular annular groove 9 is embedded and fixed on the left side of the top of the circular frame 4, and a telescopic hose 14 is connected and fixed to the top of the vertical pipe 13. The telescopic characteristics of the telescopic hose 14 can provide the vertical pipe 13 with a space distance for moving downward. The movable plate 2 is sleeved on the vertical pipe 13, wherein a third through-hole is opened on the left side of the top of the movable plate 2, and the vertical pipe 13 is located in the third through-hole and does not contact the inner wall of the third through-hole. The third through-hole is used for the vertical pipe 13 to pass through;

[0025] The bottom of both sides of the shielding cover 3 is fixedly connected with the same vertical driving mechanism, and the vertical driving mechanism is fixedly connected to the inner walls of both sides of the U-shaped base 100, wherein the vertical driving mechanism includes two connecting blocks 6, and the sides of the two connecting blocks 6 close to each other are respectively fixedly connected to the bottom of both sides of the shielding cover 3, and the inner walls of both sides of the U-shaped base 100 are fixedly connected with multi-stage electric telescopic rods 7, and the bottom ends of the output shafts of the multi-stage electric telescopic rods 7 are fixedly connected to the tops of the corresponding connecting blocks 6, and the multi-stage electric telescopic rods 7 are used to drive the corresponding connecting blocks 6 to move vertically, and the front side of the multi-stage electric telescopic rod 7 on the left side is fixedly connected with Synchronous control switch, a pressure sensor 12 is embedded and fixed on the left side of the bottom of the shielding cover 3, wherein an embedding groove is opened on the left side of the bottom of the shielding cover 3, and the top inner wall of the embedding groove is fixedly connected to the top of the pressure sensor 12, and the pressure sensor 12 and the two multi-stage electric telescopic rods 7 are electrically connected to the synchronous control switch, and a circular rubber ring 8 is bonded and fixed to the bottom of the shielding cover 3, and the top left side of the circular rubber ring 8 is in active contact with the bottom of the pressure sensor 12, and the pressure sensor 12 is used to detect the extrusion force of the circular rubber ring 8, and the synchronous control switch can control the two multi-stage electric telescopic rods 7 to open synchronously;

[0026] The same L-shaped hole 16 is provided at the bottom and left side of the top plate 102, a conical cover 15 connected to the inside of the L-shaped hole 16 is fixedly connected to the left side of the bottom of the top plate 102, the top of the telescopic hose 14 is connected and fixed to the bottom of the conical cover 15, the conical cover 15 is used to achieve the connection between the L-shaped hole 16 and the telescopic hose 14, a filtering mechanism is installed in the L-shaped hole 16, the top of the filtering mechanism extends to the top of the top plate 102, the filtering mechanism includes an L-shaped filter plate 18 movably sleeved in the L-shaped hole 16, wherein the front and rear sides of the L-shaped filter plate 18 are movably contacted with the front inner wall and the rear inner wall of the L-shaped hole 16 respectively, the L-shaped filter plate 18 is magnetically fixed to the bottom inner wall of the L-shaped hole 16, wherein the bottom inner wall of the L-shaped hole 16 is provided with a groove, the bottom inner wall of the groove is fixedly connected with a first magnet, the bottom of the L-shaped filter plate 18 A second magnet is fixedly connected, and the second magnet is movably sleeved in the groove and adsorbed with the top of the first magnet. The L-shaped filter plate 18 can be quickly fixed by the first magnet and the second magnet. A rectangular block is fixedly connected to the top of the L-shaped filter plate 18, and the top of the rectangular block is flush with the top of the top plate 102. The top plate 102 is movably sleeved on the rectangular block, wherein a rectangular through-hole is opened on the top inner wall of the L-shaped hole 16, and a sealing rubber is bonded and coated on the outer side of the rectangular block, and the outer side of the sealing rubber is in close contact with the inner wall of the rectangular through-hole. A sealed connection between the rectangular block and the rectangular through-hole is achieved by the sealing rubber. The outer diameter of the rectangular through-hole is adapted to the outer diameter of the L-shaped filter plate 18, and the rectangular through-hole can be passed through by the L-shaped filter plate 18. A pull ring is fixedly connected to the top of the rectangular block, and the L-shaped filter plate 18 can be moved out of the L-shaped hole 16 by the pull ring and the rectangular block;

[0027] An air pump 17 is fixedly connected to the left side of the top plate 102, and the right side of the air pump 17 is an extraction end and is connected to the left side of the L-shaped hole 16. The air pump 17 provides suction force. The utility model can shield the stones or gravel flying around the drilling hole during the drilling process through a series of structural settings, reduce the situation where stones or gravel fly onto the construction workers, reduce safety hazards, and can suck, filter and collect the dust generated during the drilling process, which can effectively reduce the impact of dust drifting to the outside on the environment and workers, and meet the use requirements.

[0028] Working principle: When in use, the whole device can be moved to the required position for drilling through four universal wheels. When drilling, the two multi-stage electric telescopic rods 7 are controlled by the synchronous control switch to open synchronously in the positive direction, and the output shafts of the two multi-stage electric telescopic rods 7 drive the two connecting blocks 6 to move downward, and the two connecting blocks 6 drive the shielding cover 3 to move downward at the same time, and the shielding cover 3 drives the circular rubber ring 8 and the circular frame 4 to move downward, and the circular frame 4 drives the vertical pipe 13 to stretch the telescopic hose 14 downward, and when the circular rubber ring 8 moves downward to contact with the ground, the shielding cover 3 that continues to move downward drives the pressure sensor 12 to move downward and squeeze the circular rubber ring 8, and the pressure sensor 12 detects the squeezing force and transmits the detected pressure value to the synchronous control switch. When the squeezing force is detected, the pressure sensor 12 sends the detected pressure value to the synchronous control switch. When the pressure reaches the preset value, the synchronous control switch controls the two multi-stage electric telescopic rods 7 to close, and then the multi-stage hydraulic cylinder 1 is started in the positive direction. The output shaft of the multi-stage hydraulic cylinder 1 drives the drill rod 104 to move downward through the drive motor 103 and the movable plate 2, and the drive motor 103 is started at the same time. The output shaft of the drive motor 103 drives the drill rod 104 to rotate, so that the drill rod 104 rotates and moves downward to drill into the soil. During the drilling process of the drill rod 104, the shielding cover 3 shields around the drill rod 104, and then during the drilling process, stones and gravel can be shielded, reducing the situation where stones or gravel splash onto the construction workers, reducing safety hazards, and at the same time, the sound-absorbing sleeve 11 absorbs the noise generated during the drilling process to reduce noise interference;

[0029] During the drilling process, the air pump 17 is turned on, and the air pump 17 sequentially sucks the inside of the rectangular annular groove 9 through the L-shaped hole 16, the conical cover 15, the telescopic hose 14 and the vertical pipe 13. Under the suction force, the dust blocked inside the shielding cover 3 is sucked through multiple suction pipes 10, so that the dust gas enters the L-shaped hole 16 through the suction pipe 10, the rectangular annular groove 9, the vertical pipe 13, the telescopic hose 14 and the conical cover 15 in turn, and the gas inside the L-shaped hole 16 passes through the L-shaped filter plate 18 and is discharged to the outside through the air pump 17. The L-shaped filter plate 18 blocks the dust inside it. During the drilling process, the dust gas is sucked, filtered and collected, which can effectively reduce the impact of the dust gas drifting to the outside on the environment and the staff;

[0030] After drilling, the multi-stage hydraulic cylinder 1 and the drive motor 103 are started in reverse to rotate the drill rod 104 out of the soil, and then the pull ring can be directly pulled upward to drive the L-shaped filter plate 18 to move out of the L-shaped hole 16 through the rectangular block, so that the dust in the L-shaped filter plate 18 can be cleaned. After cleaning, the L-shaped filter plate 18 can be installed inside the L-shaped hole 16 again, and at the same time, the two multi-stage electric telescopic rods 7 are controlled by the synchronous control switch to open in the opposite direction synchronously, so that the two connecting blocks 6 drive the shielding cover 3 to move upward and separate from the ground, and then wait for the next use.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pile drilling device, comprising a U-shaped base (100), wherein a drill rod (104) is arranged inside the U-shaped base (100), characterized in that: The top sides of the U-shaped base (100) are fixedly connected to support plates (101), the tops of the two support plates (101) are fixedly connected to the same top plate (102), the bottom of the top plate (102) is embedded and fixed with a multi-stage hydraulic cylinder (1), the bottom end of the output shaft of the multi-stage hydraulic cylinder (1) is fixedly connected to a drive motor (103), the two support plates (101) are slidably sleeved with the same moving plate (2), the drill rod (104) is rotatably mounted on the bottom of the moving plate (2), the bottom end of the output shaft of the drive motor (103) is fixedly connected to the top of the drill rod (104), and a shielding cover (3) with an opening at the bottom is provided in the U-shaped base (100), the shielding cover (3) is sleeved on the drill rod (104), and the shielding cover A suction mechanism is installed on (3), the bottom of both sides of the shielding cover (3) is fixedly connected to the same vertical driving mechanism, the vertical driving mechanism is fixedly connected to the inner walls of both sides of the U-shaped base (100), the bottom and left side of the top plate (102) are provided with the same L-shaped hole (16), the left side of the bottom of the top plate (102) is fixedly connected to a conical cover (15) connected to the inside of the L-shaped hole (16), the bottom of the conical cover (15) is connected and fixed to the top of the suction mechanism, a filtering mechanism is installed in the L-shaped hole (16), the top of the filtering mechanism extends to the top of the top plate (102), the left side of the top plate (102) is fixedly connected to an air pump (17), the right side of the air pump (17) is an extraction end and is connected to the left side of the L-shaped hole (16).

2. A pile drilling device according to claim 1, characterized in that: The suction mechanism comprises a rectangular annular groove (9) formed on the top of the shielding cover (3); a circular frame (4) matching the rectangular annular groove (9) is fixedly connected to the top of the shielding cover (3); a plurality of downwardly inclined suction pipes (10) are embedded and fixed on the inner walls of the four sides of the shielding cover (3); the plurality of suction pipes (10) are connected to the inside of the rectangular annular groove (9); a sound absorbing sleeve (11) is provided in the inner adhesive sleeve of the shielding cover (3); the sound absorbing sleeve (11) is fixedly The fixed sleeve is arranged on a plurality of suction pipes (10), the sound absorbing sleeve (11) and the circular frame (4) are both sleeved on the drill rod (104), a vertical pipe (13) connected to the inside of the rectangular annular groove (9) is embedded and fixed on the left side of the top of the circular frame (4), a telescopic hose (14) is connected and fixed to the top of the vertical pipe (13), the movable plate (2) is sleeved on the vertical pipe (13), and the top of the telescopic hose (14) is connected and fixed to the bottom of the conical cover (15).

3. A pile drilling device according to claim 2, characterized in that: The vertical drive mechanism comprises two connecting blocks (6), the sides of the two connecting blocks (6) close to each other are respectively fixedly connected to the bottoms of the two sides of the shielding cover (3), the inner walls of the two sides of the U-shaped base (100) are fixedly connected to multi-stage electric telescopic rods (7), the bottom ends of the output shafts of the multi-stage electric telescopic rods (7) are fixedly connected to the tops of the corresponding connecting blocks (6), the front side of the left multi-stage electric telescopic rod (7) is fixedly connected to a synchronous control switch, a pressure sensor (12) is embedded and fixed on the left side of the bottom of the shielding cover (3), the pressure sensor (12) and the two multi-stage electric telescopic rods (7) are electrically connected to the synchronous control switch, and a circular rubber ring (8) is adhesively fixed to the bottom of the shielding cover (3), and the left side of the top of the circular rubber ring (8) is in active contact with the bottom of the pressure sensor (12).

4. A pile drilling device according to claim 3, characterized in that: The filtering mechanism comprises an L-shaped filter plate (18) movably mounted in the L-shaped hole (16); the L-shaped filter plate (18) is magnetically fixed to the bottom inner wall of the L-shaped hole (16); a rectangular block is fixedly connected to the top of the L-shaped filter plate (18); the top of the rectangular block is flush with the top of the top plate (102); the top plate (102) is movably mounted on the rectangular block; and a pull ring is fixedly connected to the top of the rectangular block.

5. A pile drilling device according to claim 2, characterized in that: A first through hole (5) is provided on the top inner wall of the shielding cover (3), a second through hole is provided on the top inner wall of the sound absorbing sleeve (11), and the drill rod (104) is located in the first through hole (5) and the second through hole and does not contact the inner wall of the first through hole (5) and the inner wall of the second through hole.

6. A pile drilling device according to claim 2, characterized in that: A third through hole is provided on the left side of the top of the movable plate (2), and the vertical pipe (13) is located in the third through hole and does not contact the inner wall of the third through hole.

7. A pile drilling device according to claim 1, characterized in that: A circular hole is provided on the top of the movable plate (2), a bearing is fixedly sleeved in the circular hole, and the inner side of the inner ring of the bearing is fixedly connected to the outer side of the drill rod (104).

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