Steel pipe drilling device

Abstract

The present invention relates to the technical field of drilling devices, and specifically to a steel pipe drilling device, comprising a base plate, a fixed seat, a linear track, a linear drive rod, a drive structure, and a first support block and a second support block, wherein one end of the base plate is fixedly connected to a vertically arranged vertical plate, the fixed seat is installed on the top of the base plate, the linear track is installed on the top of the vertical plate, and the linear track is driven by a first motor. The present invention supports the interior of a steel pipe body by setting a bidirectional extension structure, and then the lifting structure is extended, so that the drilling structure moves downward to drill the steel pipe body, and the drill bit on the drilling structure will be inserted into the interior of a movable hole, and the movable hole supports the steel pipe body to prevent the deformation of the steel pipe body when the drilling structure is pressed down to drill.

Description

Technical Field

[0001] The invention relates to the technical field of drilling devices, and in particular to a steel pipe drilling device. Background Art

[0002] Common stainless steel pipes have a hollow structure. For design requirements, when processing some stainless steel pipes, holes need to be punched on their surfaces for connecting other components.

[0003] The prior art discloses a thin-walled stainless steel pipe auxiliary punching device with publication number CN117123828A, comprising a base, one end of which is connected to a support plate, and a positioning piece is arranged on the base for positioning and installing the steel pipe; a punching piece is arranged on the top of the support plate for punching holes in the steel pipe; the device also includes a support piece, which is located on the inner side of the steel pipe to support the punching area, and the positions of the punching piece and the support piece are synchronized to support the inner wall of the stainless steel pipe when punching; a fixing piece is used to fix and support the inner side of the steel pipe; the present invention can achieve internal support when drilling holes in thin-walled stainless steel pipes to prevent the stainless steel pipes from deforming during the processing.

[0004] However, when it is in use, it only supports and fixes the inner and outer walls of the steel pipe where the hole is punched, and the punching parts and the supporting parts are both relatively long, and will be slightly deformed under the action of gravity, which will affect the accuracy and quality of the punching. Moreover, after the stainless steel pipe is punched, the burrs on the steel pipe need to be manually removed, and the process is relatively cumbersome. Summary of the invention

[0005] The present invention provides a steel pipe drilling device to solve the problems in the background technology.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A steel pipe drilling device comprises a bottom plate, one end of which is fixedly connected to a vertically arranged vertical plate; a fixing seat for fixing a steel pipe body, the fixing seat being installed on the top of the bottom plate; a linear track, the linear track being installed on the top of the vertical plate, the linear track being driven by a first motor, a lifting structure being installed on the linear track, the lifting structure being movable along the linear track, and a drilling structure for drilling being installed at the bottom of the lifting structure; a linear driving rod, the linear driving rod being installed with a bidirectional extension structure, the linear driving rod being driven by a second motor, the bidirectional extension structure being movable along the linear driving rod; a driving structure for driving the bidirectional extension structure to expand toward both ends or contract toward the middle, the driving structure being installed inside the bidirectional extension structure; and a first support block and a second support block, the first support block and the second support block being respectively located at the upper and lower ends of the bidirectional extension structure, the driving structure being used to drive the first support block and the second support block to move, a movable hole being opened in the middle of the first support block, a cylindrical block being movably connected inside the movable hole, and a plurality of uniformly distributed friction blocks being movably connected at the edge of the outer side of the movable hole.

[0008] Preferably, the top of the fixed seat is in contact with the steel pipe body, and a plurality of evenly distributed third movable grooves are provided on the top of one side of the fixed seat close to the steel pipe body, and each of the third movable grooves is slidably connected to a mounting plate, a fixed pulley is installed on the top of the mounting plate, a sealing ring is installed at the top edge of the third movable groove, and a lifting structure is installed at the bottom of the fixed seat.

[0009] Preferably, the lifting structure includes a telescopic rod, the top of the telescopic rod is fixedly connected to a mounting bar, the top of the mounting bar is fixedly connected to a plurality of connecting rods corresponding to the mounting plate, the connecting rods are fixedly connected to the mounting plate, the bottom of the base plate is fixedly connected to a supporting foot, and the bottom of the telescopic rod is fixedly connected to the supporting foot.

[0010] Preferably, the linear track is internally slidably connected to a slide seat, the linear track is a screw track, the slide seat can make linear motion along the screw inside the linear track, the outer side of the linear track is fixedly connected to a plurality of side support frames, the bottom of the side support frames is fixedly connected to the bottom plate, and the bottom of the lifting structure is fixedly connected to an elastic pressing plate.

[0011] Preferably, the linear drive rod includes a threaded rod, a limit slide rod and a side fixed rod, one end of the threaded rod passes through the vertical plate and is fixedly connected to the output shaft of the second motor, the threaded rod is rotatably connected to the vertical plate, a plurality of limit slide rods are provided, the limit slide rod is parallel to the threaded rod, one end of the limit slide rod is fixedly connected to the vertical plate, and one end of the threaded rod and the limit slide rod away from the vertical plate is fixedly connected to the side fixed rod.

[0012] Preferably, the two-way extension structure includes a mounting block, the mounting block is provided with a threaded hole and a sliding hole, the interior of the threaded hole is threadedly connected to the threaded rod, the limiting sliding rod is slidably connected to the sliding hole, and the upper and lower ends of the mounting block are movably connected to an upper L-shaped plate and a lower L-shaped plate, respectively, the upper and lower ends of the mounting block are fixedly connected to the first support block, the lower L-shaped plate is fixedly connected to the second support block, the upper and lower L-shaped plates are symmetrically distributed, the inner sides of the upper and lower L-shaped plates are fixedly connected to a triangular block, the upper and lower ends of the mounting block are provided with a receiving groove movably connected to the triangular block, the outer side of the mounting block is fixedly connected to a plurality of vertically arranged limiting rods, the outer sides of the lower L-shaped plate and the upper L-shaped plate are fixedly connected to a slider, and the limiting rod is slidably connected to the slider.

[0013] Preferably, the driving structure includes a third motor, a mounting hole is provided inside the mounting block, the third motor is fixedly installed inside the mounting hole, the mounting block is rotatably connected to two vertically arranged worms, the bottom of each worm is fixedly connected to a reversing gear, the two worms are meshed together through the reversing gears, the mounting block is also rotatably connected to two worm wheels, the two worm wheels are respectively meshed with outer walls of the two worms, two gears are fixedly connected to the shaft of each worm wheel, a second movable groove is provided on one side of the upper L-shaped plate and the lower L-shaped plate close to the mounting block, a rack is fixedly connected inside the second movable groove, and the gear is meshed with the rack.

[0014] Preferably, a bearing is fixedly connected at the center of the bottom of the cylindrical block, and the cylindrical block is rotatably connected to the inner sleeve rod through the arranged bearing. The bottom of the inner sleeve rod is slidably connected to an outer sleeve, and a spring is fixedly connected inside the outer sleeve, the upper end of the spring is fixedly connected to the lower end of the inner sleeve rod, and the lower end of the outer sleeve is fixedly connected to the top of the upper L-shaped plate, and a wear-resistant gasket is fixedly connected at the center of the top of the cylindrical block, and a plurality of first movable grooves for accommodating friction blocks are provided at the outer edge of the cylindrical block, and a vertically arranged sliding groove is provided on the inner wall of the first movable groove, and a protrusion slidably connected to the sliding groove is fixedly connected to the outer wall of the friction block, and a rubber block is provided between the friction block and the first movable groove, and an air joint is fixedly connected to the outer wall of the first support block, and a through hole connected to the interior of the movable hole is provided inside the first support block, and the air joint is connected to one end of the through hole.

[0015] Compared with the existing technology, the present invention has the following beneficial effects:

[0016] 1. The steel pipe body is fixed by a fixed seat, and the drilling structure and the bidirectional extension structure are driven by the first motor and the second motor to move. After reaching the position where drilling is required, the driving structure drives the first support block and the second support block on the bidirectional extension structure to expand toward both ends until they are against the inside of the steel pipe body to support the inside of the steel pipe body. Then the lifting structure is extended to make the drilling structure move downward to drill the steel pipe body. The drill bit on the drilling structure will be inserted into the inside of the movable hole. The movable hole supports the steel pipe body to prevent the deformation of the steel pipe body when the drilling structure is pressed down to drill.

[0017] 2. The drill bit will press against the surface of the cylindrical block and press the cylindrical block downward. Under the action of friction, the drill bit drives the cylindrical block to rotate at high speed. When the drill bit is retracted, the high-speed rotating cylindrical block grinds away the burrs on the outer edge of the lower end surface of the steel pipe body through the friction block arranged on the outside, so that the drill hole opened on the steel pipe body is not deformed and has no burrs, thereby improving the quality of the drilling process;

[0018] 3. When loading and unloading the steel pipe body, the telescopic rod is extended to make the fixed pulley extend from the top of the third movable groove, so that the steel pipe body is in contact with the fixed pulley, which is convenient for loading and unloading the steel pipe body. After reaching the specified position, the telescopic rod is contracted to make the steel pipe body first stick to the top of the fixed seat. With the continuous contraction of the telescopic rod, the mounting plate is driven to move down along the third movable groove, forming a negative pressure inside the third movable groove, fixing the steel pipe body firmly and conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 It is a front view of the present invention;

[0021] Figure 3 It is a schematic cross-sectional view of the structure of the present invention;

[0022] Figure 4 The present invention Figure 3 A schematic diagram of the structure enlargement at the center A;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the present invention after the steel pipe body is removed;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the bidirectional extension structure of the present invention;

[0025] Figure 7 is a schematic cross-sectional view of the bidirectional extension structure of the present invention;

[0026] Figure 8 The present invention Figure 7 A schematic diagram of the structure enlarged at B in the middle;

[0027] Fig. 9 The present invention Figure 8 A schematic diagram of the structure enlarged at C in the middle;

[0028] Fig.10 It is an internal schematic diagram of the bidirectional extension structure of the present invention.

[0029] In the figure: 1, bottom plate; 2, fixed seat; 3, vertical plate; 4, linear track; 5, linear drive rod; 6, first motor; 7, second motor; 8, slide seat; 9, lifting structure; 10, drilling structure; 11, two-way extension structure; 12, first support block; 13, movable hole; 14, cylindrical block; 15, first movable groove; 16, friction block; 17, steel pipe body; 18, threaded rod; 19, limit slide rod; 20, side fixed rod; 21, mounting block; 22, threaded hole; 23, lower L-shaped plate; 24, upper L-shaped plate; 25, second support block; 26, limit rod; 27, slider; 28 , triangular block; 29, storage groove; 30, worm; 31, worm wheel; 32, gear; 33, second movable groove; 34, rack; 35, slide groove; 36, rubber block; 37, wear-resistant gasket; 38, outer sleeve; 39, inner sleeve rod; 40, spring; 41, bearing; 42, air joint; 43, through hole; 44, mounting hole; 45, third motor; 46, third movable groove; 47, mounting plate; 48, fixed pulley; 49, sealing ring; 50, connecting rod; 51, mounting strip; 52, telescopic rod; 53, supporting foot; 54, side support frame; 55, elastic pressure piece; 56, reversing gear. DETAILED DESCRIPTION

[0030] 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 the embodiments.

[0031] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0032] Reference Figure 1 - Fig.10A steel pipe drilling device comprises a bottom plate 1, one end of which is fixedly connected to a vertically arranged vertical plate 3; a fixing seat 2 for fixing a steel pipe body 17, the fixing seat 2 being installed on the top of the bottom plate 1; a linear track 4, the linear track 4 being installed on the top of the vertical plate 3, the linear track 4 being driven by a first motor 6, a lifting structure 9 being installed on the linear track 4, the lifting structure 9 being able to move along the linear track 4, a drilling structure 10 for drilling a hole being installed at the bottom of the lifting structure 9; a linear driving rod 5, a bidirectional extension structure 11 being installed on the linear driving rod 5, the linear driving rod 5 being driven by a second motor 7, wherein the first motor 6 and the second motor 7 are controlled to rotate by a single chip microcomputer, so that the positions of the drilling structure 10 and the bidirectional extension structure 11 are maintained during movement. The two-way extension structure 11 is consistent, and can move along the linear driving rod 5; the driving structure is used to drive the two-way extension structure 11 to expand toward both ends or contract toward the middle, and the driving structure is installed inside the two-way extension structure 11; and the first support block 12 and the second support block 25, the first support block 12 and the second support block 25 are respectively located at the upper and lower ends of the two-way extension structure 11, and the driving structure is used to drive the first support block 12 and the second support block 25 to move, and a movable hole 13 is opened in the middle of the first support block 12, and a cylindrical block 14 is movably connected inside the movable hole 13, and a plurality of evenly distributed friction blocks 16 are movably connected at the edge of the outer side of the movable hole 13, wherein the diameter of the movable hole 13 is slightly larger than the diameter of the drill bit on the drilling structure 10.

[0033] In this embodiment, when drilling a hole in the steel pipe body 17, the steel pipe body 17 is fixed by the fixed seat 2, and the drilling structure 10 and the bidirectional extension structure 11 are driven by the first motor 6 and the second motor 7 to move. After reaching the position where the hole needs to be drilled, the driving structure drives the first support block 12 and the second support block 25 on the bidirectional extension structure 11 to expand toward both ends until they are against the inside of the steel pipe body 17 to support the inside of the steel pipe body 17. Then, the lifting structure 9 is extended, so that the drilling structure 10 moves downward to drill the steel pipe body 17, and the drill bit on the drilling structure 10 It will be inserted into the movable hole 13, and the movable hole 13 supports the steel pipe body 17 to prevent the steel pipe body 17 from being deformed when the drilling structure 10 presses down to drill the hole, and the drill bit will press against the surface of the cylindrical block 14 and press the cylindrical block 14 downward. Under the action of friction, the drill bit drives the cylindrical block 14 to rotate at high speed. When the drill bit is retracted, the high-speed rotating cylindrical block 14 grinds off the burrs on the outer edge of the lower end surface of the steel pipe body 17 at the drilling site through the friction block 16 arranged on the outside, so that the drill hole opened on the steel pipe body 17 is not deformed and has no burrs, thereby improving the quality of the drilling process.

[0034] Specifically, the top of the fixed seat 2 is fitted with the steel pipe body 17, and a plurality of evenly distributed third movable grooves 46 are opened on the top of one side of the fixed seat 2 close to the steel pipe body 17, and a mounting plate 47 is slidably connected to the inside of each third movable groove 46, and a fixed pulley 48 is installed on the top of the mounting plate 47, and a sealing ring 49 is installed at the top edge of the third movable groove 46. A lifting structure is installed at the bottom of the fixed seat 2, and the lifting structure includes a telescopic rod 52, and a mounting bar 51 is fixedly connected to the top of the telescopic rod 52, and a plurality of connecting rods 50 corresponding to the mounting plate 47 are fixedly connected to the top of the mounting bar 51, and the connecting rods 50 are fixedly connected to the mounting plate 47, and the bottom of the base plate 1 is fixedly connected to a supporting foot 53, and the bottom of the telescopic rod 52 is fixedly connected to the supporting foot 53.

[0035] In this embodiment, when the steel tube body 17 is loaded and unloaded, the telescopic rod 52 is extended so that the fixed pulley 48 extends from the top of the third movable groove 46, allowing the steel tube body 17 to contact the fixed pulley 48, which facilitates the loading and unloading of the steel tube body 17. After reaching the specified position, the telescopic rod 52 is contracted so that the steel tube body 17 is first attached to the top of the fixed seat 2. As the telescopic rod 52 continues to contract, the mounting plate 47 is driven to move downward along the third movable groove 46, forming a negative pressure inside the third movable groove 46 to fix the steel tube body 17. The sealing ring 49 is provided to enhance the sealing performance.

[0036] Specifically, the linear track 4 is internally slidably connected to a slide seat 8, the linear track 4 is a screw track, the slide seat 8 can perform linear motion along the screw inside the linear track 4, the outer side of the linear track 4 is fixedly connected to multiple side support frames 54, the bottom of the side support frame 54 is fixedly connected to the base plate 1, and the bottom of the lifting structure 9 is fixedly connected to an elastic pressing plate 55.

[0037] Specifically, the linear drive rod 5 includes a threaded rod 18, a limit slide rod 19 and a side fixed rod 20. One end of the threaded rod 18 passes through the vertical plate 3 and is fixedly connected to the output shaft of the second motor 7. The threaded rod 18 is rotatably connected to the vertical plate 3. A plurality of limit slide rods 19 are provided. The limit slide rods 19 are parallel to the threaded rod 18. One end of the limit slide rod 19 is fixedly connected to the vertical plate 3. The ends of the threaded rod 18 and the limit slide rod 19 away from the vertical plate 3 are fixedly connected to the side fixed rod 20.

[0038] In this embodiment, the second motor 7 drives the threaded rod 18 to rotate, the limiting slide rod 19 plays a limiting role, and the side fixing rod 20 plays a fixing role. When the threaded rod 18 rotates, it can drive the bidirectional extension structure 11 to move along the threaded rod 18.

[0039] Specifically, the bidirectional extension structure 11 includes a mounting block 21, which is provided with a threaded hole 22 and a sliding hole. The interior of the threaded hole 22 is threadedly connected to the threaded rod 18, and the limiting sliding rod 19 is slidably connected to the sliding hole. The upper and lower ends of the mounting block 21 are respectively movably connected with an upper L-shaped plate 24 and a lower L-shaped plate 23. The upper L-shaped plate 24 is fixedly connected to the first support block 12, and the lower L-shaped plate 23 is fixedly connected to the second support block 25. The upper L-shaped plate 24 and the lower L-shaped plate 23 are symmetrically distributed, and the inner sides of the upper L-shaped plate 24 and the lower L-shaped plate 23 are fixedly connected with triangular blocks 28. The upper and lower ends of the mounting block 21 are provided with receiving grooves 29 movably connected to the triangular blocks 28. A plurality of vertically arranged limiting rods 26 are fixedly connected to the outer side of the mounting block 21, and sliders 27 are fixedly connected to the outer sides of the lower L-shaped plate 23 and the upper L-shaped plate 24. The limiting rods 26 are slidably connected to the sliders 27.

[0040] Specifically, the driving structure includes a third motor 45, a mounting hole 44 is opened inside the mounting block 21, the third motor 45 is fixedly installed inside the mounting hole 44, the mounting block 21 is rotatably connected to two vertically arranged worms 30, the bottom of each worm 30 is fixedly connected to a reversing gear 56, the two worms 30 are meshed together through the reversing gear 56, the mounting block 21 is also rotatably connected to two worm wheels 31, the two worm wheels 31 are respectively meshed with the outer walls of the two worms 30, and two gears 32 are fixedly connected to the shaft of each worm wheel 31, and a second movable groove 33 is opened on one side of the upper L-shaped plate 24 and the lower L-shaped plate 23 close to the mounting block 21, and a rack 34 is fixedly connected inside the second movable groove 33, and the gear 32 is meshed with the rack 34.

[0041] In this embodiment, the third motor 45 drives one of the worm gears 30 to rotate, and the two worm gears 30 are meshed together through the reversing gear 56, that is, the two worm gears 30 turn in opposite directions, thereby driving the two worm wheels 31 to rotate in the same direction, so that the lower L-shaped plate 23 and the upper L-shaped plate 24 are driven to approach or move away synchronously.

[0042] Specifically, a bearing 41 is fixedly connected at the center of the bottom of the cylindrical block 14, and the cylindrical block 14 is rotatably connected to the inner sleeve rod 39 through the provided bearing 41. The bottom of the inner sleeve rod 39 is slidably connected to the outer sleeve 38, and the inner part of the outer sleeve 38 is fixedly connected to a spring 40, the upper end of the spring 40 is fixedly connected to the lower end of the inner sleeve rod 39, and the lower end of the outer sleeve 38 is fixedly connected to the top of the upper L-shaped plate 24. A wear-resistant gasket 37 is fixedly connected at the center of the top of the cylindrical block 14, and the outer edge of the cylindrical block 14 A plurality of first movable grooves 15 for accommodating friction blocks 16 are provided at the first movable grooves 15, a vertically arranged slide groove 35 is provided on the inner wall of the first movable groove 15, a protrusion slidably connected to the slide groove 35 is fixedly connected to the outer wall of the friction block 16, a rubber block 36 is provided between the friction block 16 and the first movable groove 15, an air joint 42 is fixedly connected to the outer wall of the first support block 12, a through hole 43 connected to the inside of the movable hole 13 is provided inside the first support block 12, and the air joint 42 is connected to one end of the through hole 43.

[0043] In this embodiment, when drilling, the drill bit on the drilling structure 10 will be inserted into the inside of the movable hole 13, and the movable hole 13 supports the steel pipe body 17 to prevent the steel pipe body 17 from being deformed when the drilling structure 10 is pressed down to drill, and the drill bit will be against the surface of the cylindrical block 14. The wear-resistant gasket 37 is made of wear-resistant material to prevent the rotating head from causing damage to the cylindrical block 14. When the drill bit is pressed down, it will drive the inner sleeve rod 39 to shrink to the inner side of the outer sleeve 38, and the cylindrical block 14 will move along the inner sleeve rod When the drill bit 39 rotates, the cylindrical block 14 will be driven to rotate at a high speed under the action of friction. When the drill bit is retracted, the cylindrical block 14 will grind off the burrs on the outer edge of the lower end surface of the drill hole of the steel pipe body 17 through the friction block 16 arranged on the outside under the action of inertia. Due to the setting of the rubber block 36, the friction block 16 will be pushed upward, so that the friction block 16 can make elastic movement along the slide groove 35, so that the friction block 16 always fits the steel pipe body 17 when rotating, thereby ensuring the quality of grinding the burrs.

[0044] Working principle: When drilling a hole in the steel pipe body 17, the steel pipe body 17 is fixed by the fixed seat 2, and the drilling structure 10 and the two-way extension structure 11 are driven by the first motor 6 and the second motor 7 to move. After reaching the position where the hole needs to be drilled, the driving structure drives the first support block 12 and the second support block 25 on the two-way extension structure 11 to expand toward both ends until they are against the inside of the steel pipe body 17 to support the inside of the steel pipe body 17. Then the lifting structure 9 is extended, so that the drilling structure 10 moves downward to drill the steel pipe body 17, and the drill bit on the drilling structure 10 is It will be inserted into the movable hole 13, and the movable hole 13 supports the steel pipe body 17 to prevent the steel pipe body 17 from being deformed when the drilling structure 10 is pressed down to drill the hole, and the drill bit will press against the surface of the cylindrical block 14 and press the cylindrical block 14 downward. Under the action of friction, the drill bit drives the cylindrical block 14 to rotate at high speed. When the drill bit is retracted, the high-speed rotating cylindrical block 14 grinds off the burrs on the outer edge of the lower end surface of the steel pipe body 17 at the drilling site through the friction block 16 arranged on the outside, so that the drill hole opened on the steel pipe body 17 is not deformed and has no burrs, thereby improving the quality of the drilling process.

[0045] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are conventional means well known to those skilled in the art.

[0046] 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 according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A steel pipe drilling device, comprising: Features: A bottom plate (1), one end of the bottom plate (1) being fixedly connected to a vertically arranged vertical plate (3); A fixing seat (2) for fixing the steel pipe body (17), wherein the fixing seat (2) is installed on the top of the bottom plate (1); A linear track (4), the linear track (4) being mounted on the top of the vertical plate (3), the linear track (4) being driven by a first motor (6), a lifting structure (9) being mounted on the linear track (4), the lifting structure (9) being movable along the linear track (4), and a drilling structure (10) for drilling holes being mounted at the bottom of the lifting structure (9); A linear drive rod (5), wherein a bidirectional extension structure (11) is mounted on the linear drive rod (5), the linear drive rod (5) is driven by a second motor (7), and the bidirectional extension structure (11) can move along the linear drive rod (5); A driving structure, used for driving the bidirectional extension structure (11) to expand toward both ends or contract toward the middle, the driving structure being installed inside the bidirectional extension structure (11); and a first support block (12) and a second support block (25), the first support block (12) and the second support block (25) being respectively located at the upper and lower ends of the bidirectional extension structure (11), the driving structure being used to drive the first support block (12) and the second support block (25) to move, a movable hole (13) being opened in the middle of the first support block (12), a cylindrical block (14) being movably connected inside the movable hole (13), and a plurality of uniformly distributed friction blocks (16) being movably connected at the outer edge of the movable hole (13); The linear drive rod (5) comprises a threaded rod (18), a limit slide rod (19) and a side fixed rod (20); one end of the threaded rod (18) passes through the vertical plate (3) and is fixedly connected to the output shaft of the second motor (7); the threaded rod (18) is rotatably connected to the vertical plate (3); a plurality of limit slide rods (19) are provided; the limit slide rod (19) is parallel to the threaded rod (18); one end of the limit slide rod (19) is fixedly connected to the vertical plate (3); and one end of the threaded rod (18) and the limit slide rod (19) away from the vertical plate (3) is fixedly connected to the side fixed rod (20); The bidirectional extension structure (11) comprises a mounting block (21), the mounting block (21) is provided with a threaded hole (22) and a sliding hole, the interior of the threaded hole (22) is threadedly connected to the threaded rod (18), the limiting sliding rod (19) is slidably connected to the sliding hole, the upper and lower ends of the mounting block (21) are movably connected to an upper L-shaped plate (24) and a lower L-shaped plate (23), the upper L-shaped plate (24) is fixedly connected to the first support block (12), the lower L-shaped plate (23) is fixedly connected to the second support block (25), and the upper L-shaped plate (24) is fixedly connected to the second support block (25). The upper plate (24) and the lower L-shaped plate (23) are symmetrically distributed, the inner sides of the upper L-shaped plate (24) and the lower L-shaped plate (23) are fixedly connected with triangular blocks (28), the upper and lower ends of the mounting block (21) are provided with receiving grooves (29) movably connected to the triangular blocks (28), the outer side of the mounting block (21) is fixedly connected with a plurality of vertically arranged limiting rods (26), the outer sides of the lower L-shaped plate (23) and the upper L-shaped plate (24) are fixedly connected with sliders (27), and the limiting rods (26) are slidably connected to the sliders (27); The driving structure comprises a third motor (45); a mounting hole (44) is provided inside the mounting block (21); the third motor (45) is fixedly installed inside the mounting hole (44); two vertically arranged worms (30) are rotatably connected inside the mounting block (21); a reversing gear (56) is fixedly connected to the bottom of each worm (30); the two worms (30) are meshed together via the reversing gear (56); two worm wheels (31) are rotatably connected inside the mounting block (21); the two worm wheels (31) are respectively meshed with the outer walls of the two worms (30); two gears (32) are fixedly connected to the shaft of each worm wheel (31); a second movable groove (33) is provided on one side of the upper L-shaped plate (24) and the lower L-shaped plate (23) close to the mounting block (21); a rack (34) is fixedly connected inside the second movable groove (33); the gear (32) is meshed with the rack (34); A bearing (41) is fixedly connected at the center of the bottom of the cylindrical block (14); the cylindrical block (14) is rotatably connected to an inner sleeve rod (39) via the bearing (41); the bottom of the inner sleeve rod (39) is slidably connected to an outer sleeve (38); a spring (40) is fixedly connected inside the outer sleeve (38); the upper end of the spring (40) is fixedly connected to the lower end of the inner sleeve rod (39); the lower end of the outer sleeve (38) is fixedly connected to the top of the upper L-shaped plate (24); a wear-resistant gasket (37) is fixedly connected at the center of the top of the cylindrical block (14); the outer edge of the cylindrical block (14) is fixedly connected to the outer sleeve (38). A plurality of first movable grooves (15) for accommodating friction blocks (16) are provided at the first support block (12); a vertically arranged slide groove (35) is provided on the inner wall of the first movable groove (15); a protrusion slidably connected to the slide groove (35) is fixedly connected to the outer wall of the friction block (16); a rubber block (36) is provided between the friction block (16) and the first movable groove (15); a gas joint (42) is fixedly connected to the outer wall of the first support block (12); a through hole (43) connected to the inside of the movable hole (13) is provided inside the first support block (12); and the gas joint (42) is connected to one end of the through hole (43).

2. A steel pipe drilling device according to claim 1, Features: The top of the fixed seat (2) is fitted with the steel pipe body (17); a plurality of evenly distributed third movable grooves (46) are provided on the top of one side of the fixed seat (2) close to the steel pipe body (17); a mounting plate (47) is slidably connected to the inside of each of the third movable grooves (46); a fixed pulley (48) is installed on the top of the mounting plate (47); a sealing ring (49) is installed at the top edge of the third movable groove (46); and a lifting structure is installed at the bottom of the fixed seat (2).

3. A steel pipe drilling device according to claim 2, Features: The lifting structure comprises a telescopic rod (52), the top of the telescopic rod (52) is fixedly connected to a mounting bar (51), the top of the mounting bar (51) is fixedly connected to a plurality of connecting rods (50) corresponding to the mounting plate (47), the connecting rods (50) are fixedly connected to the mounting plate (47), the bottom of the base plate (1) is fixedly connected to a supporting foot (53), and the bottom of the telescopic rod (52) is fixedly connected to the supporting foot (53).

4. A steel pipe drilling device according to claim 1, Features: The linear track (4) is internally slidably connected to a slide seat (8); the linear track (4) is a screw track; the slide seat (8) can move linearly along the screw inside the linear track (4); the outer side of the linear track (4) is fixedly connected to a plurality of side support frames (54); the bottom of the side support frames (54) is fixedly connected to the bottom plate (1); and the bottom of the lifting structure (9) is fixedly connected to an elastic pressing sheet (55).

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