A steel pipe tapping machine

Abstract

The present application relates to the technical field of metal processing, and disclose a kind of steel pipe trepanning machine, including workbench, installation plate is fixedly installed on the upper side of workbench, two arc clamping plates are provided on workbench, arc clamping plate in lower is fixedly connected with installation plate, two telescopic devices are fixedly installed on the upper side of workbench, lifting plate is fixedly installed on the output shaft upper end of two telescopic devices, the hole first opened is aligned with one of the moving column, then make moving column enter the hole opened, so it can be rotated one of the rotating rod and drive gear rotation, so it can be driven by chain movable belt rotation movement, so it can drive moving column moves, so it can drive steel pipe to move right, with lifting drill machine back and forth trepanning, staff can intermittently rotate rotating rod and drive steel pipe to move left, so it can control trepanning pitch while avoiding steel pipe front and back rotation resulting in the hole opened is not aligned.

Description

Technical Field

[0001] This invention relates to the technical field of metal processing, specifically to a steel pipe drilling machine. Background Technology

[0002] Steel pipes are used for transporting fluids and powdery solids, exchanging heat energy, manufacturing mechanical parts and containers, and are also an economical steel material. The development of steel pipe production technology began with the rise of the bicycle manufacturing industry, boilers, and aircraft manufacturing. Steel pipes have a hollow cross-section, and their length is much greater than their diameter or circumference. According to the cross-sectional shape, they are divided into circular, square, rectangular, and irregularly shaped steel pipes. Because of their smooth surface, circular steel pipes are prone to misalignment when moving the pipe to open a second hole after the first hole is opened, which can lead to misalignment of the holes. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a steel pipe drilling machine, which has the advantages of controlling the hole spacing while avoiding misalignment of the drilled holes due to the front and back rotation of the steel pipe. It solves the problem that round steel pipes, due to their smooth surface, are prone to displacement when moving the steel pipe to drill the second hole after drilling the first hole, which leads to misalignment of the drilled holes.

[0004] To achieve the goal of controlling the hole spacing while avoiding misalignment of the holes caused by the front and rear rotation of the steel pipe, the present invention provides the following technical solution: A steel pipe hole-making machine includes a worktable, an mounting plate fixedly installed on the upper side of the worktable, two arc-shaped clamps on the worktable, the lower arc-shaped clamp fixedly connected to the mounting plate, two telescopic devices fixedly installed on the upper side of the worktable, a lifting plate fixedly installed on the upper end of the output shaft of the two telescopic devices, a telescopic drill mounted on the lifting plate, the drill bit of the telescopic drill movingly through the lifting plate, a through groove opened on the upper arc-shaped clamp, the drill bit of the telescopic drill passing through the through groove, the upper arc-shaped clamp set on the lifting plate, a support plate fixedly installed on the upper side of the worktable, a top plate fixedly installed on the support plate, two long plates fixedly installed on the lower side of the top plate, two gears arranged between the two long plates, a rotating rod fixedly passing through each of the two gears, the two rotating rods movingly passing through the two long plates, a chain sleeved on the two gears, a movable belt fixedly installed on the chain, several movable columns movingly passing through the movable belt, and a steel pipe arranged between the two arc-shaped clamps.

[0005] Preferably, a movable tube is fixedly sleeved on the right rotating rod of the two rotating rods, a movable rod is fixedly installed on the movable tube, and a control lever is fixedly installed on each movable rod.

[0006] Preferably, two racetrack-shaped limiting strips a are provided between the two long plates, and each of the two racetrack-shaped limiting strips a is provided with a racetrack-shaped limiting strip b. The rear racetrack-shaped limiting strips a and b are fixedly connected to the rear long plate. Several fixing blocks are fixedly installed on the front racetrack-shaped limiting strips a and b, and each fixing block is fixedly connected to the front long plate. The inner sidewalls of the two racetrack-shaped limiting strips a are in contact with the outer sidewall of the movable belt, and the outer sidewalls of the two racetrack-shaped limiting strips b are in contact with the inner sidewall of the movable belt.

[0007] Preferably, a horizontal plate is fixedly installed on the front side of the rear long plate of the two long plates, an arc-shaped block is fixedly installed on the left side of the horizontal plate, a lifting ring is fixedly sleeved on each moving column, and a pressure spring a is movably sleeved on each moving column. The two ends of each pressure spring a are respectively fixedly connected to the inner side wall of the moving belt and each lifting ring.

[0008] Preferably, each of the movable columns is provided with a spherical groove a, and a movable ball a is movably connected in each spherical groove a. The inner sidewalls of the two arc-shaped clamps are provided with spherical grooves b, and a movable ball b is movably connected in each spherical groove b.

[0009] Preferably, a plurality of fixed tubes are fixedly installed on the upper side of the upper arc-shaped clamping plate of the two arc-shaped clamping plates. A circular plate is fixedly installed inside each fixed tube, and a pressure spring b is fixedly installed on the upper side of each circular plate. The upper end of each pressure spring b is fixedly connected to the lifting plate. A lifting tube is movably sleeved on each fixed tube, and the upper end of each lifting tube is fixedly connected to the lower side of the lifting plate.

[0010] Preferably, a block is fixedly installed on the front side of the front long plate of the two long plates. A groove is opened on the upper side of the block. A blocking strip is movably connected in the groove. A small rod is fixedly installed on the blocking strip. The small rod movably passes through the left and right walls of the groove. A trapezoidal block is fixedly installed on the upper side of the block.

[0011] Preferably, a fixing strip is fixedly installed on the upper side of the workbench, and an arc-shaped support plate is fixedly installed on the upper side of the fixing strip. Small balls are movably embedded on the upper side of the arc-shaped support plate.

[0012] Compared with the prior art, the present invention provides a steel pipe drilling machine, which has the following beneficial effects:

[0013] This steel pipe drilling machine works by placing the steel pipe between two arc-shaped clamping plates. Then, two telescopic devices are activated to move the lifting plate downwards, clamping the steel pipe. The telescopic drill then drills a hole in the pipe. The telescopic devices move upwards, causing the lifting plate to move upwards as well, pushing the steel pipe to the right. The first hole is aligned with one of the moving columns, which then enters the hole. Rotating a rotating rod drives a gear, which in turn drives a chain-driven movable belt, moving the moving column and thus the steel pipe to the right. As the drilling machine drills back and forth, the operator can intermittently rotate the rotating rod to move the steel pipe to the left. This allows control of the hole spacing and prevents misalignment caused by the steel pipe rotating back and forth.

[0014] This steel pipe drilling machine allows users to easily rotate and move a movable rod via a control lever. This facilitates the rotation of the rear rotating rod, effectively increasing the lever arm and thus enhancing the device's practicality.

[0015] This steel pipe drilling machine uses two racetrack-shaped limit strips a and two racetrack-shaped limit strips b to limit the movement of the movable belt, thereby improving the stability of the movable belt during movement and effectively preventing the movable belt from shaking during rotation, which would affect the limiting effect on the steel pipe, thus further improving the practicality of the device.

[0016] This steel pipe drilling machine uses a rotating conveyor belt to move several moving columns. When a moving column moves to the arc-shaped block, it moves along the arc-shaped block to the horizontal plate. Then, due to the pressure of the horizontal plate, the moving column moves downward and enters the hole to be drilled in the steel pipe. When the moving column continues to move and separates from the horizontal plate, the rebound of the pressure spring A causes the moving column to move upward and separate from the hole on the steel pipe. Thus, the moving column moves up and down in and out of the hole, preventing the moving column from getting stuck.

[0017] This steel pipe drilling machine reduces the friction between the moving column and the arc block by using movable ball a, and also reduces the friction between the moving column and the horizontal plate. Movable ball b reduces the friction when the steel pipe is moving, making it easier for the user to move the position of the steel pipe for the next drilling.

[0018] This steel pipe punching machine utilizes the resilience of the pressure spring b to drive the upper arc-shaped clamping plate downwards and squeeze the steel pipe when the lifting plate moves downwards. This avoids excessive pressure that could deform the steel pipe and cause damage.

[0019] 7. This steel pipe drilling machine can prevent the movement of the movable rod by using a blocking bar. When it is necessary to rotate the movable rod to move the steel pipe, the moving blocking bar can be rotated upward to rotate the movable rod. At the same time as rotating the movable rod, the blocking bar is released, so that the blocking bar will fall back to its original position. Thus, the movable rod will be blocked after rotating one revolution, and the rotation can be stopped. The size of the gear and the distance between the moving column can be set according to the required hole spacing. Attached Figure Description

[0020] Figure 1 This is a frontal perspective view of the present invention;

[0021] Figure 2 For the present invention Figure 1 A three-dimensional structural diagram of a medium-length board;

[0022] Figure 3 For the present invention Figure 2 A schematic diagram of the three-dimensional structure of the central active zone;

[0023] Figure 4 For the present invention Figure 2 A cross-sectional three-dimensional structural diagram of the central active zone;

[0024] Figure 5 For the present invention Figure 1 A three-dimensional structural diagram of the mounting plate;

[0025] Figure 6 For the present invention Figure 1 A three-dimensional structural diagram of the arc-shaped clamping plate;

[0026] Figure 7 For the present invention Figure 1 A schematic diagram of the three-dimensional structure of the Chinese block;

[0027] Figure 8 For the present invention Figure 6 A cross-sectional three-dimensional structural diagram of the central rising pipe.

[0028] In the diagram: 1. Workbench; 2. Telescopic device; 3. Mounting plate; 4. Arc-shaped clamp; 5. Steel pipe; 6. Lifting plate; 7. Telescopic drilling rig; 8. Support plate; 9. Top plate; 10. Long plate; 11. Control lever; 12. Block; 13. Movable lever; 14. Movable tube; 15. Rotating lever; 16. Fixed strip; 17. Small ball; 18. Arc-shaped support plate; 19. Movable belt; 20. Racetrack-shaped limit strip a; 21. Moving column; 22. 23. Runway-shaped limit bar b; 24. Arc-shaped block; 25. Horizontal plate; 26. Fixed block; 27. Chain; 28. Gear; 29. ​​Spherical groove a; 30. Movable ball a; 31. Lifting ring; 32. Pressure spring a; 33. Spherical groove b; 34. Movable ball b; 35. Groove; 36. Blocking bar; 37. Through groove; 38. Small rod; 39. Trapezoidal block; 40. Fixed tube; 41. Circular plate; 42. Pressure spring b; 43. Lifting tube. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings, wherein the same parts are indicated by the same reference numerals. It should be noted that the terms “front”, “rear”, “left”, “right”, “upper” and “lower”, “bottom surface” and “top surface” used in the following description refer to the directions in the drawings, and the terms “inner” and “outer” refer to the directions toward or away from the geometric center of a specific part, respectively.

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figures 1-8The present invention provides a technical solution: a steel pipe drilling machine, comprising a workbench 1, an mounting plate 3 fixedly installed on the upper side of the workbench 1, two arc-shaped clamping plates 4 provided on the workbench 1, the lower arc-shaped clamping plate 4 fixedly connected to the mounting plate 3, two telescopic devices 2 fixedly installed on the upper side of the workbench 1, a lifting plate 6 fixedly installed on the upper end of the output shaft of the two telescopic devices 2, a telescopic drilling machine 7 installed on the lifting plate 6, the drill bit of the telescopic drilling machine 7 moving through the lifting plate 6, a through groove 37 opened on the upper arc-shaped clamping plate 4, the drill bit of the telescopic drilling machine 7 passing through the through groove 37, the upper arc-shaped clamping plate 4 set on the lifting plate 6, a support plate 8 fixedly installed on the upper side of the workbench 1, a top plate 9 fixedly installed on the support plate 8, and a [missing information - likely a device or component] fixedly installed on the lower side of the top plate 9. Two long plates 10 are connected by two gears 28. A rotating rod 15 is fixedly threaded through each gear 28, and the two rotating rods 15 movably pass through the two long plates 10. A chain 27 is sleeved on each gear 28, and a movable belt 19 is fixedly installed on the chain 27. Several movable columns 21 movably pass through the movable belt 19. A steel pipe 5 is positioned between two arc-shaped clamping plates 4. By placing the steel pipe 5 between the two arc-shaped clamping plates 4, two telescopic devices 2 can be activated to move the lifting plate 6 downwards, thus clamping the steel pipe 5. A telescopic drilling rig 7 can then be used to drill a hole in the steel pipe 5. The telescopic devices 2 then move upwards, causing the lifting plate 6 to move upwards, thus pushing the steel pipe 5 to the right. The first hole is then aligned with one of the movable posts 21, and the movable post 21 is inserted into the hole. Rotating one of the rotating rods 15 drives the gear 28 to rotate, which in turn drives the movable belt 19 via the chain 27, thus moving the movable post 21. This moves the steel pipe 5 to the right. As the drilling rig 7 moves back and forth, the operator can intermittently rotate the rotating rod 15 to move the steel pipe 5 to the left. This controls the hole spacing and prevents misalignment caused by the steel pipe 5 rotating back and forth. A movable tube 14 is fixedly sleeved on the right rotating rod 15, and a movable rod 13 is fixedly installed on the movable tube 14. All movable rods 13 are fixedly installed... A control lever 11 allows the user to easily rotate and move the movable lever 13, which in turn facilitates the rotation of the rear rotating lever 15. This effectively increases the lever arm of the rotating lever 15, thus improving the practicality of the device. Two racetrack-shaped limiting strips a20 are provided between the two long plates 10, and each racetrack-shaped limiting strip a20 contains a racetrack-shaped limiting strip b22. The rear racetrack-shaped limiting strips a20 and b22 are fixedly connected to the rear long plate 10. Several fixing blocks 25 are fixedly installed on the front racetrack-shaped limiting strips a20 and b22, each fixing block 25 being fixedly connected to the front long plate 10.The inner walls of the two racetrack-shaped limiting strips a20 are in contact with the outer walls of the movable belt 19, and the outer walls of the two racetrack-shaped limiting strips b22 are in contact with the inner walls of the movable belt 19. The two racetrack-shaped limiting strips a20 and b22 can limit the movement of the movable belt 19, thereby improving its stability during movement and effectively preventing it from swaying during rotation, which would affect the limiting effect on the steel pipe 5. This further enhances the practicality of the device. A horizontal plate 24 is fixedly installed on the front side of the rear long plate 10, and an arc-shaped block 23 is fixedly installed on the left side of the horizontal plate 24. A lifting ring 31 is fixedly sleeved on each moving column 21, and a pressure spring a is movably sleeved on each moving column 21. 32. Each pressure spring a32 has its two ends fixedly connected to the inner wall of the movable belt 19 and each lifting ring 31. The rotation of the movable belt 19 drives several moving columns 21 to move. When the moving column 21 moves to the arc block 23, it moves along the arc block 23 to the horizontal plate 24. Then, due to the compression of the horizontal plate 24, the moving column 21 moves downward and enters the hole in the steel pipe 5. When the moving column 21 continues to move and separates from the horizontal plate 24, the rebound of the pressure spring a32 drives the moving column 21 to move upward and separate from the hole on the steel pipe 5. Thus, the moving column 21 moves up and down in and out of the hole, thus preventing the moving column 21 from getting stuck. Each moving column 21 has a spherical groove a29, and each spherical groove a29 has a movable connecting... A movable ball a30 is connected to each of the two arc-shaped clamping plates 4. Spherical grooves b33 are formed on the inner walls of each arc-shaped clamping plate 4, and a movable ball b34 is movably connected within each groove b33. The movable ball a30 reduces the friction between the moving column 21 and the arc-shaped block 23, and also reduces the friction between the moving column 21 and the horizontal plate 24. The movable ball b34 reduces the friction when the steel pipe 5 moves, making it easier for the user to move the steel pipe 5 to the next drilling operation. Several fixed pipes 40 are fixedly installed on the upper side of the upper arc-shaped clamping plate 4. A circular plate 41 is fixedly installed within each fixed pipe 40, and a pressure spring b42 is fixedly installed on the upper side of each circular plate 41. The upper end of each pressure spring b42 is fixedly connected to the lifting plate 6. Each fixed pipe 40 is movably fitted with a lifting pipe 43. The upper end of each lifting pipe 43 is fixedly connected to the lower side of the lifting plate 6. Through the toughness of the pressure spring b42, when the lifting plate 6 moves downward, the pressure of the pressure spring b42 drives the upper arc-shaped clamping plate 4 to move downward and squeeze the steel pipe 5. This avoids excessive pressure that could deform the steel pipe 5 and cause damage. A block 12 is fixedly installed on the front side of the two long plates 10. A groove 35 is opened on the upper side of the block 12. A blocking strip 36 is movably connected in the groove 35. A small rod 38 is fixedly installed on the blocking strip 36. The small rod 38 movably passes through the left and right walls of the groove 35. A trapezoidal block 39 is fixedly installed on the upper side of the block 12. A fixing strip 16 is fixedly installed on the upper side of the worktable 1.An arc-shaped support plate 18 is fixedly installed on the upper side of the fixed strip 16. A small ball 17 is movably embedded on the upper side of the arc-shaped support plate 18. The moving rod 13 can be prevented from moving by the blocking strip 36. When it is necessary to rotate the moving rod 13 to move the steel pipe 5, the moving rod 13 can be rotated by rotating the moving blocking strip 36 upward. At the same time as rotating the moving rod 13, the blocking strip 36 is released, so that the blocking strip 36 will fall back to its original position. Thus, the moving rod 13 will be blocked after rotating one revolution, and the rotation can be stopped. Therefore, the size of the gear 28 and the distance between the moving column 21 can be set according to the required spacing of the holes.

[0032] In use, the first step is to place the steel pipe 5 between two arc-shaped clamping plates 4, then activate the two telescopic devices 2 to move the lifting plate 6 downwards, thus clamping the steel pipe 5. Then, the telescopic drill 7 can be used to drill a hole in the steel pipe 5. Then, by moving the telescopic device 2 upwards, the lifting plate 6 can be moved upwards, thus pushing the steel pipe 5 to the right. The first hole is then aligned with one of the moving columns 21, and the moving column 21 is moved into the hole. By rotating one of the rotating rods 15, the gear 28 can be rotated, which in turn drives the movable belt 19 to rotate via the chain 27, thus moving the moving column 21. This moves the steel pipe 5 to the right. As the lifting drill 7 drills back and forth, the operator can intermittently rotate the rotating rod 15 to move the steel pipe 5 to the left. This controls the hole spacing and prevents the holes from being misaligned due to the steel pipe 5 rotating back and forth.

[0033] Step 2: The user can easily rotate and move the movable rod 13 by using the control lever 11. This allows the user to easily rotate the rotating rod 15 located at the rear, thereby effectively increasing the lever arm of the rotating rod 15 and improving the practicality of the device.

[0034] Step 3: The movable belt 19 can be limited by two racetrack-shaped limit bars a20 and two racetrack-shaped limit bars b22, which can improve the stability of the movable belt 19 when it moves, and at the same time effectively prevent the movable belt 19 from shaking when it rotates and moving, which would affect the limiting effect on the steel pipe 5, thereby further improving the practicality of the device.

[0035] Step 4: The rotating movement of the movable belt 19 drives several movable columns 21 to move. When the movable column 21 moves to the arc block 23, it will move along the arc block 23 to the horizontal plate 24. Then, due to the compression of the horizontal plate 24, the movable column 21 will move downward and enter the hole in the steel pipe. When the movable column 21 continues to move and separates from the horizontal plate 24, the rebound of the pressure spring a32 will drive the movable column 21 to move upward and separate from the hole on the steel pipe 5. Thus, the movable column 21 moves up and down in and out of the hole, thus preventing the movable column 21 from getting stuck.

[0036] Step 5: The movable ball a30 can reduce the friction between the moving column 21 and the arc block 23, and also reduce the friction between the moving column 21 and the horizontal plate 24. The movable ball b34 can reduce the friction when the steel pipe 5 moves, thus making it easier for the user to move the position of the steel pipe 5 for the next hole opening.

[0037] Step 6: By utilizing the resilience of the pressure spring b42, the pressure of the pressure spring b42 can drive the upper arc-shaped clamping plate 4 to move downward and squeeze the steel pipe 5 when the lifting plate 6 moves downward. This can prevent the steel pipe 5 from being deformed due to excessive pressure and thus being damaged.

[0038] Step 7: The blocking bar 36 can prevent the movable rod 13 from moving. When it is necessary to rotate the movable rod 13 to move the steel pipe 5, the moving blocking bar 36 can be rotated upward to rotate the movable rod 13. While rotating the movable rod 13, the blocking bar 36 is released, so that the blocking bar 36 will fall back to its original position. Thus, the movable rod 13 will be blocked after rotating one revolution, and the rotation can be stopped. Therefore, the size of the gear 28 and the distance between the movable column 21 can be set according to the required spacing of the holes.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steel pipe drilling machine, comprising a worktable (1), characterized in that: A mounting plate (3) is fixedly installed on the upper side of the workbench (1). Two arc-shaped clamps (4) are provided on the workbench (1). The lower arc-shaped clamp (4) is fixedly connected to the mounting plate (3). Two telescopic devices (2) are fixedly installed on the upper side of the workbench (1). A lifting plate (6) is fixedly installed on the upper end of the output shaft of the two telescopic devices (2). A telescopic drilling machine (7) is installed on the lifting plate (6). The drill bit of the telescopic drilling machine (7) moves through the lifting plate (6). A through groove (37) is opened on the upper arc-shaped clamp (4). The drill bit of the telescopic drilling machine (7) passes through the through groove (37). The upper arc-shaped clamp (4) is set on the lifting plate (6). A support plate (8) is fixedly installed on the upper side of the workbench (1). A top plate (9) is fixedly installed on the support plate (8). Two long plates (10) are fixedly installed on the lower side of the top plate (9). Two gears (28) are set between the two long plates (10). A rotating rod (15) is fixedly passed through each of the two gears (28). The two rotating rods (15) movably pass through the two long plates (10). A chain (27) is sleeved on the two gears (28). A movable belt (19) is fixedly installed on the chain (27). Several movable columns (21) movably pass through the movable belt (19). A steel pipe (5) is set between the two arc-shaped clamps (4). Two racetrack-shaped limiting strips a (20) are set between the two long plates (10). A racetrack-shaped limiting strip b is set inside each of the two racetrack-shaped limiting strips a (20). 22), the rear runway-shaped limiting strip a (20) and the rear runway-shaped limiting strip b (22) are both fixedly connected to the rear long plate (10). Several fixing blocks (25) are fixedly installed on the front runway-shaped limiting strip a (20) and the front runway-shaped limiting strip b (22). Each fixing block (25) is fixedly connected to the front long plate (10). The inner walls of the two runway-shaped limiting strips a (20) are in contact with the outer wall of the movable belt (19). The outer walls of the two runway-shaped limiting strips b (22) are in contact with the inner wall of the movable belt (19). A horizontal plate (24) is fixedly installed on the front side of the rear long plate (10). The left side of the horizontal plate (24) is fixed. An arc-shaped block (23) is installed, and a lifting ring (31) is fixedly sleeved on each moving column (21). A pressure spring a (32) is movably sleeved on each moving column (21). The two ends of each pressure spring a (32) are fixedly connected to the inner wall of the moving belt (19) and each lifting ring (31). The rotation and movement of the moving belt (19) drives several moving columns (21) to move. When the moving column (21) moves to the arc-shaped block (23), the moving column (21) will move along the arc-shaped block (23) to the horizontal plate (24). Then, due to the squeezing of the horizontal plate (24), the moving column (21) will move downward and enter the hole opened in the steel. When the moving column (21) continues to move and separates from the horizontal plate (24),The rebound of the pressure spring a (32) will cause the moving column (21) to move upward and separate from the hole on the steel pipe (5).

2. The steel pipe drilling machine according to claim 1, characterized in that: A movable tube (14) is fixedly sleeved on the right rotating rod (15) of the two rotating rods (15), and a movable rod (13) is fixedly installed on the movable tube (14). A control lever (11) is fixedly installed on each movable rod (13).

3. A steel pipe drilling machine according to claim 1, characterized in that: Each of the movable columns (21) is provided with a spherical groove a (29), and a movable ball a (30) is movably connected in each spherical groove a (29). The inner sidewalls of the two arc-shaped clamps (4) are provided with spherical grooves b (33), and a movable ball b (34) is movably connected in each spherical groove b (33).

4. A steel pipe drilling machine according to claim 1, characterized in that: Several fixed tubes (40) are fixedly installed on the upper side of the two arc-shaped clamps (4). A circular plate (41) is fixedly installed inside each fixed tube (40). A pressure spring b (42) is fixedly installed on the upper side of each circular plate (41). The upper end of the pressure spring b (42) is fixedly connected to the lifting plate (6). A lifting tube (43) is movably sleeved on each fixed tube (40). The upper end of each lifting tube (43) is fixedly connected to the lower side of the lifting plate (6).

5. A steel pipe drilling machine according to claim 1, characterized in that: A block (12) is fixedly installed on the front side of the two long plates (10). A groove (35) is opened on the upper side of the block (12). A blocking strip (36) is movably connected in the groove (35). A small rod (38) is fixedly installed on the blocking strip (36). The small rod (38) movably passes through the left and right walls of the groove (35). A trapezoidal block (39) is fixedly installed on the upper side of the block (12).

6. A steel pipe drilling machine according to claim 1, characterized in that: A fixing strip (16) is fixedly installed on the upper side of the workbench (1), and an arc-shaped support plate (18) is fixedly installed on the upper side of the fixing strip (16). A small ball (17) is movably embedded on the upper side of the arc-shaped support plate (18).

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