Drilling rig for ground construction

Abstract

The invention discloses a drilling device for ground construction, and relates to the technical field of ground drilling. Comprising a drilling part, a transverse moving auxiliary part is installed on the drilling part, and the transverse moving auxiliary part is used for preventing soil leakage when the drilling part moves transversely; a soil shifting part is mounted on the transverse moving auxiliary part; the soil shifting part is used for shifting the drilled soil; two external expansion extrusion pieces are mounted on the transverse moving auxiliary piece; the external expansion extrusion part is used for being attached to the hole wall. The two transverse moving auxiliary pieces are each provided with a downward pressing driving part. The pressing driving part is used for extruding the two external expansion extrusion pieces to expand; the problems that an existing drilling device for ground construction is inconvenient to directly and transversely drill and move, and soil between adjacent holes is prone to collapse are solved. And the transverse moving auxiliary part is matched with the drilling part, so that transverse displacement drilling of the structure can be facilitated during actual drilling, and the drilling efficiency of the structure can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ground drilling, and specifically to a drilling device for ground construction. Background Technique

[0002] In actual steel sheet pile construction work, it is usually necessary to insert steel sheet piles into the ground for cofferdam work. Before steel sheet pile construction, it is usually necessary to construct a drilling guide hole on the ground to reduce the difficulty of inserting the steel sheet pile into the ground. The current drilling device for ground construction mainly drills vertically through a drill bit and ensures that the drilled holes are connected. It is not convenient for direct lateral drilling and movement, the drilling efficiency is low, the drill bit needs to be frequently lifted to discharge soil, and the soil between adjacent holes is prone to collapse, which is not conducive to maintaining the quality of the hole wall. At the same time, it is not convenient to give real-time prompts in the drilling area, and there are relatively large potential safety hazards.

[0003] Therefore, we propose a drilling device for ground construction. Summary of the Invention

[0004] The purpose of the present invention is to provide a drilling device for ground construction to solve the problems that the current drilling device for ground construction is not convenient for direct lateral drilling and movement, and the soil between adjacent holes is prone to collapse as mentioned in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A drilling device for ground construction, including a drilling member, a lateral movement assisting member is installed on the drilling member, and the lateral movement assisting member is used to prevent soil leakage when the drilling member moves laterally; a soil pushing member is installed on the lateral movement assisting member; the soil pushing member is used to push the drilled soil; two outward expansion and extrusion members are installed on the lateral movement assisting member; the outward expansion and extrusion members are used to fit the hole wall; a downward pressing driving part is respectively installed on the two lateral movement assisting members; the downward pressing driving part is used to squeeze the two outward expansion and extrusion members to expand; a falling prevention and warning member is installed on the soil pushing member; the falling prevention and warning member is used to enclose the periphery of the drilling hole; the drilling member includes: a spiral drill bit and an upper rotary frame, and the upper rotary frame is rotatably sleeved on the spiral drill bit; a pin hole for connecting the drill string of the drilling rig is provided at the top of the spiral drill bit; the spiral drill bit is used for lateral drilling and soil drilling.

[0006] Preferably, the drilling member further includes: a soil loosening drill bit, and a circle of soil loosening drill bits are fixedly installed at the bottom of the spiral drill bit; the soil loosening drill bits are used to loosen the soil at the bottom of the hole.

[0007] Preferably, the lateral movement assisting member includes: a soil retaining arc-shaped cover, a drag reducing roller shaft, and a bottom collar. The soil retaining arc-shaped cover is fixedly installed on the upper slewing frame by bolts; the soil retaining arc-shaped cover is located on the side of the screw drill bit; two drag reducing roller shafts are rotatably embedded inside the soil retaining arc-shaped cover, and the two drag reducing roller shafts are in rolling contact with the screw drill bit; a bottom collar is fixedly installed at the bottom of the soil retaining arc-shaped cover, and the bottom collar is sleeved on the bottom of the screw drill bit; the soil loosening drill bit is located above the circle of soil loosening drill bits; both sides of the soil retaining arc-shaped cover are used for fitting against the hole wall of the drill hole.

[0008] Preferably, the soil deflecting member includes: a deflecting plate and a rotary connecting seat. Two deflecting plates are fixedly installed on the soil retaining arc-shaped cover by bolts, and the two soil retaining arc-shaped covers are obliquely installed; the two deflecting plates are respectively used for fitting against the ground; rotary connecting seats are respectively fixedly installed on the two deflecting plates; the deflecting plate is used for pushing soil.

[0009] Preferably, the outward expansion and extrusion member includes: a rotary connecting arm, a swinging protrusion, and a rotary roller. Four rotary connecting arms are rotatably installed on the soil retaining arc-shaped cover, and the four rotary connecting arms are aligned in pairs up and down; swinging protrusions are respectively fixedly installed on the four rotary connecting arms, and the sides of the swinging protrusions are chamfered; a rotary roller is rotatably installed on the two aligned rotary connecting arms up and down, and a circle of protrusions is provided on the rotary roller; the rotary roller is used for rolling and fitting against the inner wall of the drill hole.

[0010] Preferably, the outward expansion and extrusion member further includes: a driving motor. Driving motors are respectively fixedly installed on the two upper rotary connecting arms, and the output shafts of the two driving motors are respectively fixedly installed on the rotary roller; the driving motor is used for driving the rotary roller to rotate.

[0011] Preferably, the downward pressing drive part includes: a downward pressing slider, an extrusion inclined surface, and a driving hydraulic cylinder. The downward pressing slider is attached to the soil retaining arc-shaped cover; two extrusion inclined surfaces are fixedly installed on the downward pressing slider, and the two extrusion inclined surfaces are respectively inclined surface protrusion structures; the two extrusion inclined surfaces respectively extrude and fit against the two swinging protrusions on the same side; driving hydraulic cylinders are respectively fixedly installed at both ends of the downward pressing slider, and the output shafts of the two driving hydraulic cylinders are respectively fixedly installed on both sides of the soil retaining arc-shaped cover; when the extrusion inclined surface moves to extrude the swinging protrusion, the rotary connecting arm drives the rotary roller to expand outward.

[0012] Preferably, the anti-falling warning member includes: a wire winding roller and a warning wire. The wire winding roller is rotatably sleeved on the rotary connecting seat; the warning wire is spirally wound on the wire winding roller; the warning wire is of a warning color; a light strip is provided on the warning wire.

[0013] Preferably, the anti-falling warning component further includes: a tightening arm, a friction rubber block, and a friction rubber ring. The tightening arm is fixedly installed on the rotary connecting seat; the friction rubber block is fixedly installed on the tightening arm and elastically fits the wire winding roller; the friction rubber ring is fixedly installed on the tightening arm, and a through hole is provided in the middle of the friction rubber ring; the middle of the friction rubber ring elastically fits the warning wire; the friction rubber ring is used to prevent the warning wire from loosening; the friction rubber block is used to reduce the rotation speed of the wire winding roller.

[0014] Preferably, the anti-falling warning component further includes: a ground-inserting shaft, a ground-inserting detection shaft, and a detection switch. The ground-inserting shaft is fixedly installed at the end of the warning wire; the ground-inserting detection shaft is slidably inserted at the bottom of the ground-inserting shaft; the detection switch is fixedly installed on the ground-inserting detection shaft and is pressed against the inner side of the ground-inserting shaft; the detection switch is electrically connected to the control power supply of the driving motor; the ground-inserting shaft is used to insert into the ground.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The present invention adopts a lateral movement auxiliary component to cooperate with a drilling component, which can facilitate the lateral displacement drilling of this structure during actual drilling, improve the drilling efficiency of this structure, realize continuous soil transportation. At the same time, this structure uses a soil retaining arc-shaped cover to automatically enclose the soil on the auger bit during the movement along the drill hole, which can prevent soil leakage. By using the method of lateral movement drilling of the auger bit, the hole wall flatness of the drilling path can be higher.

[0016] The outer expansion extrusion component can be used to cooperate with the downward pressure driving part to expand and fit inside the drilled hole wall, assist in positioning the soil retaining arc-shaped cover, improve the stability of the soil retaining arc-shaped cover. At the same time, by pressing, it can assist in extruding the drilled hole wall, improve the stability of the drilled hole wall, reduce the hole wall collapse rate. The rotary roller can achieve active rotation and roll and displace on the hole wall surface, which can assist in improving the power of the auger bit to move in the hole, further improve the drilling efficiency. At the same time, using the rotary roller to apply a propulsive force behind the soil retaining arc-shaped cover is more comprehensive, keeping the lower part of the soil retaining arc-shaped cover also having a stable forward propulsive force to assist in drilling.

[0017] The anti-falling warning component can assist in pulling out a warning belt outside a row of holes during actual drilling of a guiding hole, improve the actual drilling safety of this structure, prompt the staff, reduce potential safety hazards, prevent the staff from falling when directly crossing the drilling hole, and at the same time, this structure can insert the anti-falling warning component into the ground to ensure that the driving motor can be normally controlled to be powered on and started only after the ground-inserting shaft is installed on the ground, which can prevent the staff from forgetting, warn outside the ground opening, prompt the construction staff in the site, increase safety, and also help with lighting to prompt the staff of the drilling position. Description of the Drawings

[0018] Figure 1 Schematic diagram of the overall structure of a drilling device for ground construction according to the present invention; Figure 2 Schematic diagram of the bottom structure of a drilling device for ground construction according to the present invention; Figure 3 Cross-sectional view of the internal structure of a drilling device for ground construction according to the present invention; Figure 4 Schematic diagram of the structure of the drilling part of the present invention; Figure 5 Schematic diagram of the structure of the lateral movement assisting part of the present invention; Figure 6 Schematic diagram of the structure of the downward pressure driving part of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of the structure of area B in; Figure 8 For the present invention Figure 2 Enlarged view of the structure of area C in; Figure 9 Schematic diagram of the outer structure of the anti-falling warning part of the present invention; Figure 10 Cross-sectional view of the internal structure of the anti-falling warning part of the present invention.

[0019] In the figure: 1. Drilling part; 101. Spiral drill bit; 102. Upper rotary frame; 103. Soil loosening drill bit; 2. Lateral movement assisting part; 201. Soil retaining arc cover; 202. Resistance reducing roller shaft; 203. Bottom collar; 3. Soil scraping part; 301. Scraping plate; 302. Rotary connecting seat; 4. Outer expansion extrusion part; 401. Rotary connecting arm; 4011. Swing protrusion; 402. Rotary roller; 403. Driving motor; 5. Downward pressure driving part; 501. Downward pressure slider; 5011. Extrusion inclined surface; 502. Driving hydraulic cylinder; 6. Anti-falling warning part; 601. Wire winding roller; 602. Warning wire; 603. Tightening arm; 6031. Friction rubber block; 604. Friction rubber ring; 605. Ground inserting shaft; 606. Ground inserting detection shaft; 607. Detection switch. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Embodiment 1: Please refer to Figures 1 to 10 as shown: The present invention provides a technical solution: a drilling device for ground construction, including a drilling member 1, on which a lateral movement assisting member 2 is installed. The lateral movement assisting member 2 is used to prevent soil leakage when the drilling member 1 moves laterally; a soil pushing member 3 is installed on the lateral movement assisting member 2; the soil pushing member 3 is used to push the drilled soil; two outward expansion and extrusion members 4 are installed on the lateral movement assisting member 2; the outward expansion and extrusion members 4 are used to fit against the hole wall; a downward pressure driving part 5 is respectively installed on the two lateral movement assisting members 2; the downward pressure driving part 5 is used to squeeze the two outward expansion and extrusion members 4 to expand; an anti-falling warning member 6 is installed on the soil pushing member 3; the anti-falling warning member 6 is used to enclose the periphery of the drill hole; the drilling member 1 includes: a spiral drill bit 101 and an upper rotary frame 102, and the upper rotary frame 102 is rotatably sleeved on the spiral drill bit 101; a pin hole for connecting the drill string of the drilling rig is provided at the top of the spiral drill bit 101; the spiral drill bit 101 is used to drill soil by lateral movement.

[0022] Among them, the drilling component 1 further includes: a soil-loosening drill bit 103, and a circle of soil-loosening drill bits 103 is fixedly installed at the bottom of the spiral drill bit 101; the soil-loosening drill bit 103 is used for loosening the soil at the bottom of the hole; the lateral movement assisting component 2 includes: a soil-retaining arc-shaped cover 201, a drag-reducing roller shaft 202, and a bottom collar 203. The soil-retaining arc-shaped cover 201 is fixedly installed on the upper slewing frame 102 by bolts; the soil-retaining arc-shaped cover 201 is located on the side of the spiral drill bit 101; two drag-reducing roller shafts 202 are rollingly embedded on the inner side of the soil-retaining arc-shaped cover 201, and the two drag-reducing roller shafts 202 are rollingly attached to the spiral drill bit 101; the bottom collar 203 is fixedly installed at the bottom of the soil-retaining arc-shaped cover 201, and the bottom collar 203 is sleeved on the bottom of the spiral drill bit 101; the soil-loosening drill bit 103 is located above the circle of soil-loosening drill bits 103; both sides of the soil-retaining arc-shaped cover 201 are used for fitting against the hole wall of the drill hole; the soil-scraping component 3 includes: a scraping plate 301 and a rotary connecting seat 302. Two scraping plates 301 are fixedly installed on the soil-retaining arc-shaped cover 201 by bolts, and the two soil-retaining arc-shaped covers 201 are obliquely installed; the two scraping plates 301 are respectively used for fitting against the ground; rotary connecting seats 302 are respectively fixedly installed on the two scraping plates 301; the scraping plate 301 is used for pushing soil. By using the lateral movement assisting component 2 to cooperate with the drilling component 1, it is convenient for this structure to perform lateral displacement drilling during actual drilling, which can improve the drilling efficiency of this structure. There is no need for cumbersome multiple vertical drillings and discharging the soil in the drill bit after each drilling. It can realize continuous soil transportation. At the same time, this structure uses the soil-retaining arc-shaped cover 201 to automatically enclose the soil on the spiral drill bit 101 during the movement along the drill hole, which can prevent soil leakage. At the same time, this structure uses the lateral movement drilling method of the spiral drill bit 101, which can make the hole wall of the drilling path smoother, avoiding the problem that the adjacent drill holes have a wavy edge and poor neatness in the traditional successive drilling method, and a high risk of collapse when inserting steel sheet piles later. By using the soil-scraping component 3, it is convenient for this structure to push the soil discharged during drilling to both sides in real time, which can prevent the soil from backfilling into the drill hole. The drilling control of this structure is simple and fast. As the spiral drill bit 101 rotates in real time, the soil can be discharged outward. The soil discharged to the ground is guided by the scraping plate 301 and is moved in real time by the driving of the drill rig in cooperation with the scraping plate 301, which can ensure that the drilled soil is diverted outward and will not fall into the drilled trough hole. As the spiral drill bit 101 performs lateral movement drilling and rotation, the soil-retaining arc-shaped cover 201 cooperates with the upper slewing frame 102 and the bottom collar 203 to sleeve the spiral drill bit 101. The soil-retaining arc-shaped cover 201 will not rotate with the spiral drill bit 101, but always remains attached to the hole wall.

[0023] Among them, the outward expansion and extrusion member 4 includes: a rotary connecting arm 401, a swinging protrusion 4011 and a rotary roller 402. Four rotary connecting arms 401 are rotatably installed on the retaining arc-shaped cover 201, and the four rotary connecting arms 401 are aligned in pairs up and down; swinging protrusions 4011 are respectively and fixedly installed on the four rotary connecting arms 401, and the sides of the swinging protrusions 4011 are chamfered; a rotary roller 402 is rotatably installed on the two aligned rotary connecting arms 401 up and down, and a circle of protrusions is provided on the rotary roller 402; the rotary roller 402 is used for rolling and fitting on the inner wall of the drilling hole; the outward expansion and extrusion member 4 further includes: a driving motor 403. Driving motors 403 are respectively and fixedly installed on the two upper rotary connecting arms 401, and the output shafts of the two driving motors 403 are respectively fixedly installed on the rotary roller 402; the driving motor 403 is used for driving the rotary roller 402 to rotate; the downward pressing driving part 5 includes: a downward pressing slider 501, an extrusion inclined surface 5011 and a driving hydraulic cylinder 502. The downward pressing slider 501 is attached to the retaining arc-shaped cover 201; two extrusion inclined surfaces 5011 are fixedly installed on the downward pressing slider 501, and the two extrusion inclined surfaces 5011 are respectively inclined surface protrusion structures; the two extrusion inclined surfaces 5011 respectively extrude and fit the two swinging protrusions 4011 on the same side; driving hydraulic cylinders 502 are respectively fixedly installed at both ends of the downward pressing slider 501, and the output shafts of the two driving hydraulic cylinders 502 are respectively fixedly installed on both sides of the retaining arc-shaped cover 201; when the extrusion inclined surface 5011 moves to extrude the swinging protrusion 4011, the rotary connecting arm 401 drives the rotary roller 402 to expand outward. The outward expansion and extrusion member 4 can be used to cooperate with the downward pressing driving part 5 to expand and fit inside the hole wall of the drilling, can assist in positioning the retaining arc-shaped cover 201, improve the stability of the retaining arc-shaped cover 201, and at the same time can assist in extruding the hole wall of the drilling by pressing, improve the stability of the hole wall of the drilling, reduce the hole wall collapse rate, improve the compactness of the soil on the hole wall. At the same time, the rotary roller 402 can rotate actively, roll and displace on the hole wall surface, can assist in improving the power of the spiral drill bit 101 to move in the hole, further improve the drilling efficiency, and at the same time use the rotary roller 402 to apply a propulsive force more comprehensively at the rear of the retaining arc-shaped cover 201, keep the lower part of the retaining arc-shaped cover 201 also have a stable forward propulsive force to assist in drilling. As the spiral drill bit 101 is controlled to displace by the drilling rig, the driving motor 403 can be used to drive the rotary roller 402 to rotate actively, roll and advance on the hole wall surface, and assist in compacting the hole wall. The displacement speed of the rotary roller 402 only needs to be consistent with the speed of the spiral drill bit 101 being controlled to move horizontally and drill by the drilling rig.

[0024] Embodiment 2. On the basis of Embodiment 1, the anti-falling warning member 6 includes: a wire winding roller 601 and a warning wire 602. The wire winding roller 601 is rotatably sleeved on the rotary connection seat 302; the warning wire 602 is spirally wound on the wire winding roller 601; the warning wire 602 is of a warning color; a light strip is provided on the warning wire 602; the anti-falling warning member 6 further includes: a tightening arm 603, a friction rubber block 6031 and a friction rubber ring 604. The tightening arm 603 is fixedly installed on the rotary connection seat 302; the friction rubber block 6031 is fixedly installed on the tightening arm 603, and the friction rubber block 6031 elastically fits the wire winding roller 601; the friction rubber ring 604 is fixedly installed on the tightening arm 603, and a through hole is provided in the middle of the friction rubber ring 604; the middle of the friction rubber ring 604 elastically fits the warning wire 602; the friction rubber ring 604 is used to prevent the warning wire 602 from loosening; the friction rubber block 6031 is used to reduce the rotation speed of the wire winding roller 601; the anti-falling warning member 6 further includes: a ground-inserting shaft 605, a ground-inserting detection shaft 606 and a detection switch 607. The ground-inserting shaft 605 is fixedly installed at the end of the warning wire 602; the ground-inserting detection shaft 606 is slidably inserted at the bottom of the ground-inserting shaft 605; the detection switch 607 is fixedly installed on the ground-inserting detection shaft 606, and the detection switch 607 is pressed against and fits the inner side of the ground-inserting shaft 605; the detection switch 607 is electrically connected to the control power supply of the driving motor 403; the ground-inserting shaft 605 is used to insert into the ground. The anti-falling warning member 6 can be used to assist in pulling out a warning belt outside a row of holes during actual drilling of a guiding hole, which can improve the actual drilling safety of this structure, can prompt the staff, reduce potential safety hazards, prevent the staff from falling when directly crossing the drilling hole, and at the same time, this structure can use the anti-falling warning member 6 to insert into the ground to ensure that the driving motor 403 can be normally controlled to be powered on and started only after the ground-inserting shaft 605 is installed on the ground, which can prevent the staff from forgetting. Because there is still a certain distance between the pile driving position and the screw drill 101 when a traditional pile driver constructs steel sheet piles, this structure can assist in real-time warning work. When the ground-inserting shaft 605 is inserted into the ground, the ground-inserting detection shaft 606 will move upward and press the detection switch 607 when blocked by the ground soil. Only at this time can the driving motor 403 be normally controlled to be powered on and started. As the screw drill 101 moves, the warning wire 602 on the wire winding roller 601 can be unrolled and discharged at this time. When the warning wire 602 is discharged, the friction rubber ring 604 is used to prevent the warning wire 602 from loosening, and the friction rubber block 6031 can also fit the wire winding roller 601 to limit the speed, preventing excessive discharge of the warning wire 602 at one time, which can warn outside the ground opening, prompt the construction staff in the site, increase safety, and also help with lighting to prompt the staff of the drilling position.

[0025] The working principle of this embodiment is as follows: first, insert the top of the spiral drill bit 101 into the drill string of the drilling rig, and fix it to the drill string of the drilling rig by inserting a pin into the pin hole on the spiral drill bit 101. First, use a normal rotary drill bit to drill two adjacent holes on the ground to facilitate the placement of this structure in the hole. At this time, the spiral drill bit 101 can be controlled to rotate by the drilling rig, and the drilling rig can be controlled to move, driving the spiral drill bit 101 to move together, directly applying pressure to the side of the borehole wall for drilling, and the opposite side is protected by a retaining arc cover 201 that fits against the hole wall to prevent soil leakage. As the spiral drill bit 101 The soil can be discharged outward by real-time rotation. The soil discharged from the ground is guided by the toggle plate 301 and is driven by the drilling rig to move in real time, which can ensure that the drilled soil is diverted outward and will not fall into the drilled slot. After the structure is placed in the borehole, the extrusion slope 5011 can be driven downward by controlling the hydraulic cylinder 502 to squeeze the swing protrusion 4011, and the two rotary connecting arms 401 can expand outward and fit the hole wall respectively. As the spiral drill bit 101 is controlled to move by the drilling rig, the soil can be discharged outward by the toggle plate 301. The driving motor 403 drives the rotary roller 402 to rotate actively, push and roll on the surface of the hole wall, and assist in compacting the hole wall. The displacement speed of the rotary roller 402 is kept consistent with the speed of the spiral drill bit 101 controlled by the drilling rig to move horizontally. When the ground insertion shaft 605 is inserted into the ground, the ground insertion detection shaft 606 is blocked by the ground soil and moves up to squeeze the detection switch 607. The detection switch 607 is connected in series with the switch of the driving motor 403. Only then can the switch of the driving motor 403 be powered on and started normally. As the spiral drill bit 101 moves, the line is reeled in. The warning line 602 on the roller 601 can be unwound and discharged, which can serve as a warning outside the hole in the ground without affecting the pile driver's follow-up piling. Because the warning line 602 is limited in length, when the spiral drill bit 101 moves too long or needs to turn at a large angle, the ground insertion shaft 605 can be manually pulled out, and the warning line 602 on the winding roller 601 can be manually rotated and reinserted into the ground. In this way, the position of the ground insertion shaft 605 can be adjusted as the drilling moves, which can be more suitable for dark light environments, improve safety, and prevent forgotten installation.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drilling device for ground construction, comprising a drilling member (1), and a transverse movement assisting member (2) is installed on the drilling member (1), characterized in that: The transverse movement auxiliary part (2) is used to prevent soil leakage when the drilling part (1) moves transversely; a soil scraping part (3) is installed on the transverse movement auxiliary part (2); the soil scraping part (3) is used to scrape the drilled soil; Two outward expansion extrusion parts (4) are installed on the transverse movement auxiliary part (2); the outward expansion extrusion parts (4) are used to fit the hole wall; Lower pressure driving parts (5) are respectively installed on the two transverse movement auxiliary parts (2); the lower pressure driving parts (5) are used to squeeze the two outward expansion extrusion parts (4) to expand; An anti-falling warning part (6) is installed on the soil scraping part (3); the anti-falling warning part (6) is used to enclose the periphery of the drilling hole; The drilling part (1) includes: a spiral drill bit (101) and an upper rotary frame (102), the spiral drill bit (101) is rotatably sleeved with the upper rotary frame (102); a pin hole for connecting the drill string of the drilling rig is provided at the top of the spiral drill bit (101); the spiral drill bit (101) is used to move transversely and drill soil.

2. The drilling device for ground construction according to claim 1, characterized in that: The drilling part (1) further includes: a soil loosening drill bit (103), a circle of soil loosening drill bits (103) is fixedly installed at the bottom of the spiral drill bit (101); the soil loosening drill bit (103) is used to loosen the soil at the bottom of the hole.

3. The drilling device for ground construction according to claim 2, characterized in that: The transverse movement auxiliary part (2) includes: a soil retaining arc-shaped cover (201), a drag reduction roller shaft (202) and a bottom collar (203), the soil retaining arc-shaped cover (201) is fixedly installed on the upper rotary frame (102) by bolts; the soil retaining arc-shaped cover (201) is located on the side of the spiral drill bit (101); two drag reduction roller shafts (202) are rollingly embedded inside the soil retaining arc-shaped cover (201), and the two drag reduction roller shafts (202) rollingly fit the spiral drill bit (101); the bottom of the soil retaining arc-shaped cover (201) is fixedly installed with a bottom collar (203), and the bottom collar (203) is sleeved at the bottom of the spiral drill bit (101); the soil loosening drill bit (103) is located above the circle of soil loosening drill bits (103); both sides of the soil retaining arc-shaped cover (201) are used to fit the hole wall of the drilling hole.

4. A drilling device for ground construction according to claim 3, characterized in that: The soil scraping part (3) includes: a scraping plate (301) and a rotary connection seat (302), two scraping plates (301) are fixedly installed on the soil retaining arc-shaped cover (201) by bolts, and the two soil retaining arc-shaped covers (201) are installed obliquely; the two scraping plates (301) are respectively used to fit on the ground; rotary connection seats (302) are respectively fixedly installed on the two scraping plates (301); the scraping plate (301) is used to push soil.

5. The drilling device for ground construction according to claim 4, characterized in that: The externally expanded extrusion part (4) includes: a rotary connecting arm (401), a swinging protrusion (4011), and a rotary roller (402). Four rotary connecting arms (401) are rotatably installed on the retaining arc-shaped cover (201), and the four rotary connecting arms (401) are aligned in pairs vertically. Swing protrusions (4011) are respectively and fixedly installed on the four rotary connecting arms (401), and the sides of the swing protrusions (4011) are chamfered. Rotary rollers (402) are rotatably installed on the upper and lower aligned rotary connecting arms (401), and a circle of protrusions is provided on the rotary rollers (402). The rotary rollers (402) are used for rolling and fitting on the inner wall of the drill hole.

6. A drilling device for ground construction according to claim 5, characterized in that: The externally expanded extrusion part (4) further includes: a driving motor (403). Driving motors (403) are respectively and fixedly installed on the upper two rotary connecting arms (401), and the output shafts of the two driving motors (403) are respectively and fixedly installed on the rotary rollers (402). The driving motor (403) is used for driving the rotary roller (402) to rotate.

7. A drilling device for ground construction according to claim 5, characterized in that: The downward pressing driving part (5) includes: a downward pressing slider (501), an extrusion inclined surface (5011), and a driving hydraulic cylinder (502). The downward pressing slider (501) is attached to the retaining arc-shaped cover (201). Two extrusion inclined surfaces (5011) are fixedly installed on the downward pressing slider (501), and the two extrusion inclined surfaces (5011) are respectively inclined surface protrusion structures. The two extrusion inclined surfaces (5011) respectively extrude and fit the two swinging protrusions (4011) on the same side. Driving hydraulic cylinders (502) are respectively and fixedly installed at both ends of the downward pressing slider (501), and the output shafts of the two driving hydraulic cylinders (502) are respectively and fixedly installed on both sides of the retaining arc-shaped cover (201). When the extrusion inclined surface (5011) moves to extrude the swinging protrusion (4011), the rotary connecting arm (401) drives the rotary roller (402) to expand outward.

8. A drilling device for ground construction according to claim 6, characterized in that: The anti-falling warning part (6) includes: a wire winding roller (601) and a warning wire (602). The wire winding roller (601) is rotatably sleeved on the rotary connecting seat (302). A warning wire (602) is spirally wound on the wire winding roller (601). The warning wire (602) is of a warning color. A light strip is provided on the warning wire (602).

9. A drilling device for ground construction according to claim 8, characterized in that: The anti-falling warning part (6) further includes: a tightening arm (603), a friction rubber block (6031), and a friction rubber ring (604). A tightening arm (603) is fixedly installed on the rotary connecting seat (302). A friction rubber block (6031) is fixedly installed on the tightening arm (603), and the friction rubber block (6031) elastically fits the wire winding roller (601). A friction rubber ring (604) is fixedly installed on the tightening arm (603), and a through hole is provided in the middle of the friction rubber ring (604). The middle of the friction rubber ring (604) elastically fits the warning wire (602). The friction rubber ring (604) is used to prevent the warning wire (602) from loosening. The friction rubber block (6031) is used to reduce the rotation speed of the wire winding roller (601).

10. A drilling device for ground construction according to claim 9, characterized in that: The anti-falling warning member (6) further includes: a ground-inserting shaft (605), a ground-inserting detection shaft (606), and a detection switch (607). The ground-inserting shaft (605) is fixedly installed at the end of the warning line (602); the ground-inserting detection shaft (606) is slidably inserted at the bottom of the ground-inserting shaft (605); the detection switch (607) is fixedly installed on the ground-inserting detection shaft (606), and the detection switch (607) is pressed against and fits the inner side of the ground-inserting shaft (605); the detection switch (607) is electrically connected to the control power supply of the driving motor (403); the ground-inserting shaft (605) is used for inserting into the ground.

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