A steel pipe punching device

Abstract

This invention discloses a steel pipe drilling device, belonging to the field of steel pipe processing technology. It includes a base, with a support and a housing fixedly connected to the top surface of the base. A slag outlet is provided between the housing and the base, and a controller is installed on the side wall of the housing. An active roller is rotatably connected to the top of the support, and a track is slidably fitted onto the outer surface of the active roller. A driven roller is rotatably fitted onto the other end of the track. This invention can stably move steel pipes, automatically transporting them, saving time and effort, and ensuring the accuracy of the steel pipe's posture and feeding position. Furthermore, the clamping block four can fully conform to the surface of the steel pipe, improving the clamping effect and preventing damage to the steel pipe's surface. The clamping block four has multiple orientations, allowing it to adapt to clamping different types and sizes of steel pipes, avoiding limitations on the application range of the steel pipe drilling device. The clamping process is also simple, requiring no screw tightening.

Description

Technical Field

[0001] This invention relates to the field of steel pipe processing technology, and in particular to a steel pipe drilling device. Background Technology

[0002] Steel pipes are steel materials with hollow cross sections, whose length is much greater than their diameter or circumference. They are classified into round, square, rectangular and irregular-shaped steel pipes according to their cross-sectional shape, and into carbon structural steel pipes, low alloy structural steel pipes, alloy steel pipes and composite steel pipes according to their material. In the process of steel pipe processing, it is necessary to drill holes in the steel pipes.

[0003] A search revealed that Chinese patent CN201921919707.7 discloses a high-precision multi-dimensional drilling device for steel pipes. While it can achieve 360° omnidirectional drilling around the steel pipe, it cannot automatically transport the pipe, requiring manual assistance for feeding. This is not only time-consuming and labor-intensive but also increases labor costs. Using a crawler-based automatic feeding system would prevent the steel pipe from moving stably, compromising the accuracy of its posture and feeding position. Furthermore, the pipe clamping process is complex, and it can only accommodate one type of steel pipe, limiting its application to different types and sizes. Chinese patent CN202894395U discloses a rapid positioning and drilling device for the center hole of stainless steel pipes, which uses clamping rollers. While this can accommodate various pipe sizes, the contact between the clamping surface and the pipe surface is low, reducing the clamping effect. Applying excessive pressure further complicates the process. It can also easily damage the surface of the steel pipe. In addition, its clamping points are distributed in a triangular pattern, which is not suitable for clamping irregularly shaped pipes, resulting in defects in the device. Summary of the Invention

[0004] The purpose of this invention is to address the deficiencies in the existing technology by proposing a steel pipe drilling device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A steel pipe drilling device includes a base, a bracket and a housing fixedly connected to the top surface of the base, a slag outlet between the housing and the base, and a controller installed on the side wall of the housing. A drive roller is rotatably connected to the top of the bracket, a track is slidably fitted onto the outer surface of the drive roller, a driven roller is rotatably fitted onto the other end of the track, and connecting belts are fixedly fitted onto both sides of the track. A second core and a first core are fixedly fitted onto the surfaces of the connecting belt and the track, respectively. An accumulator is fitted onto the inner surface of the track, a converter is installed on the output end of the accumulator, a main guide wire is fixedly connected to the output end of the converter, a branch wire is connected to the outer surface of the main guide wire, and an electric switch is connected in series on the branch wire.

[0007] The above scheme achieves the following technical effects: the steel pipe can be positioned on the centerline of the track and parallel to the track centerline. Then, the controller sends a closing command to all the electric switches of the front and rear groups, thereby energizing the branch conductor. This causes the core wrapped on the branch conductor to generate an adsorption force, which in turn adsorbs the steel pipe, achieving the purpose of stabilizing the movement of the steel pipe. This not only enables automatic transportation of the steel pipe, saving time and effort, but also ensures the accuracy of the steel pipe's posture and feeding position.

[0008] Furthermore, the driven roller is rotatably connected to the inner wall of the housing, and the output terminal of the controller is electrically connected to the energy storage device, the inverter, and the electric switch, respectively.

[0009] The above solution achieves the following technical effect: enabling the controller to control the battery, inverter, and electric switch.

[0010] Furthermore, the main guide wire is wound and sleeved with the outer surface of the second core, and the branch wire is wound and sleeved with the outer surface of the first core, with the winding direction of the branch wire being opposite to the winding direction of the main guide wire, and the first core and the second core are arranged perpendicular to each other.

[0011] The above scheme achieves the following technical effect: the direction of the induced magnetic field generated by core one is opposite to the direction of the induced magnetic field generated by core two, so that when core two repels the steel pipe, core one can attract the steel pipe.

[0012] Furthermore, a displacement sensor is installed on the connecting strip above the second core, and the battery and displacement sensor corresponding to the second core are numbered.

[0013] The above solution achieves the following technical effects: it facilitates the numbering of the core and the battery, allowing the numbers to be arranged in a certain order, and preventing the number at the front end of the steel pipe from being greater than the number at the rear end.

[0014] Furthermore, a fixed frame is fixedly connected between the inner sidewalls of the housing, and a sliding groove is formed on the inner sidewall of the housing. A slider one is slidably sleeved in the sliding groove. A movable frame is fixedly connected between the sidewalls of the slider one. A cavity is formed in the top sidewall of both the movable frame and the fixed frame. A toothed ring is fixedly sleeved on the sidewall of the cavity, and a sliding plate is slidably connected to the sidewall of the cavity. An electric push rod is installed on one side of the sliding plate, and a slider two is fixedly connected to the other side of the sliding plate. A motor is installed on the sidewall of the slider two, and a gear is fixedly connected to the output end of the motor. A pneumatic push rod is installed between the movable frame and the inner sidewall of the housing.

[0015] The above solution achieves the following technical effects: it allows the pneumatic push rod to rotate, which in turn allows the four locking blocks and the steel pipe to rotate accordingly, thus achieving the purpose of multi-dimensional drilling.

[0016] Furthermore, both the slider and the groove have T-shaped cross-sections.

[0017] The input end of the push rod is electrically connected to the controller, and the gear meshes with the gear ring.

[0018] Furthermore, the second slider is slidably connected to the side wall of the cavity, and a connecting rod is fixedly connected between the two sliders. The electric push rod is slidably sleeved with the side wall of the cavity.

[0019] The above solution achieves the following technical effect: it fixes the distance between the two sliders, thus ensuring that the moving blocks are always facing each other.

[0020] Furthermore, a movable block is fixedly connected to the output end of the electric push rod, and a locking block 1 is slidably sleeved inside the movable block. Two locking blocks 2 are slidably sleeved inside each locking block 1, two locking blocks 3 are slidably sleeved inside each locking block 2, and two locking blocks 4 are slidably sleeved inside each locking block 3. Sliding buttons are rotatably connected to both sides of the locking blocks 4, 3, 2, and 1.

[0021] The above solution achieves the following technical effects: it allows the orientation of the fourth clamping block to be varied, thus enabling the fourth clamping block to adapt to clamping different types and sizes of steel pipes, avoiding limitations on the application range of the steel pipe drilling device. At the same time, the above clamping process is relatively simple and does not require the operation of turning screws.

[0022] Furthermore, the second card block is symmetrically arranged with respect to the first card block, the third card block is symmetrically arranged with respect to the second card block, and the fourth card block is symmetrically arranged with respect to the third card block.

[0023] Furthermore, the four card blocks, three card blocks, two card blocks, and one card block are all connected by a sliding button.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] 1. This invention uses an N-pole electromagnet to magnetize the front end of the steel pipe, making the front end the S pole and the rear end the N pole. This allows the steel pipe to be repelled by the core, preventing it from deflecting during movement. A displacement sensor on the connecting belt detects the steel pipe and generates an induction signal, which is then sent to the controller along with a serial number. Multiple [parts / processes] should be involved in this process.

[0026] The controller senses the signal and numbering information, sorts the numbering information, and divides it into front and rear groups based on the number of numbers. If the number of numbers is odd, the middle numbers are removed to avoid uneven grouping. The controller then activates the corresponding accumulator based on the numbering information of the front group, causing the accumulator to energize the main conductor via a converter. This generates a positive induced magnetic field in the core wound on the main conductor, repelling the S pole at the front end of the steel pipe. Simultaneously, the controller activates the corresponding accumulator based on the numbering information of the rear group, causing the accumulator to reverse the current via a converter and flow into the main conductor. This generates a reverse induced magnetic field in the core wound on the main conductor, repelling the N pole at the rear end of the steel pipe. This overall repulsion of the steel pipe ensures it is positioned parallel to the centerline of the track, guaranteeing accurate pipe posture and feeding position. Finally, the controller sends a closing command to all electric switches in both the front and rear groups. This energizes the branch conductor, causing the core wrapped around it to generate an adsorption force, which in turn attracts the steel pipe. This further stabilizes the steel pipe, ensuring it is positioned on the centerline of the track, and allows for automatic transport of the pipe, saving time and effort.

[0027] 2. This invention uses an electric push rod to move the moving block in opposite directions, thereby indirectly causing the four locking blocks to contact the outer surface of the steel pipe. The four locking blocks then rotate within the three locking blocks via a sliding knob, initially bringing them into contact with the steel pipe surface. As the electric push rod further extends, the three locking blocks experience a counterforce from the four locking blocks, causing them to rotate within the two locking blocks. This initially adjusts the orientation of the four locking blocks, further bringing them into contact with the steel pipe surface. Finally, the two locking blocks rotate within the first locking block, adjusting the orientation of the three locking blocks, further adjusting the orientation of the four locking blocks, ensuring they fully contact the steel pipe surface. This improves the clamping effect and prevents damage to the steel pipe surface. Simultaneously, during the above process, the four locking blocks...

[0028] The variable orientation of the clamping block allows it to adapt to clamping different types and sizes of steel pipes, avoiding limitations on the application range of the steel pipe drilling device. At the same time, the clamping process is relatively simple and does not require the operation of turning screws.

[0029] 3. In this invention, the motor on the second slider drives the gear to rotate, and the gear meshes with the gear ring, causing the gear to rotate around the gear ring. This allows the gear to indirectly drive the second slider and the slide plate to rotate, which in turn causes the electric push rod on the slide plate to drive the moving block to rotate. This allows the clamping direction of the moving block to be adjusted, making the clamping of the moving block adaptable to irregularly shaped steel pipes, further improving the clamping effect of the steel pipe and preventing the steel pipe from moving during drilling. Attached Figure Description

[0030] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0031] Figure 1 is a schematic diagram of the overall structure of a steel pipe drilling device proposed in this invention; Figure 2 is a schematic diagram of the track structure of a steel pipe drilling device proposed in this invention;

[0032] Figure 3 is an enlarged view of part A in Figure 1 of a steel pipe punching device proposed in this invention;

[0033] Figure 4 is a schematic diagram of the internal structure of the shell of the steel pipe drilling device proposed in this invention; Figure 5 is a cross-sectional view of the moving block structure of the steel pipe drilling device proposed in this invention; Figure 6 is a cross-sectional view of the moving frame structure of the steel pipe drilling device proposed in this invention.

[0034] Figure 7 is a schematic diagram of the accumulator connection of the steel pipe drilling device proposed in this invention; Figure 8 is a cross-sectional view of the shell structure of the steel pipe drilling device proposed in this invention. In the figures: 1. Base; 2. Support; 3. Shell; 4. Slag outlet; 5. Controller;

[0035] 6. Drive roller; 7. Track; 8. Connecting belt; 9. Core 1; 10. Core 2; 11.

[0036] 12. Storage battery; 13. Directional converter; 14. Main conductor; 15. Branch conductor; 16. Electric switch; 17. Fixed frame; 18. Moving frame; 19. Slider 1; 20. Cavity; 21. Gear ring; 22. Slide plate; 23. Electric actuator; 24. Slider 2; 25. Motor; 26. Gear; 27. Moving block; 28. Locking block 1; 29. ​​Locking block 2; 30. Locking block 3; 31. Slide button;

[0037] 32. Pneumatic push rod; 33. Driven roller. Detailed Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0039] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0040] Example 1:

[0041] Please refer to Figures 1-3 and 7. This invention provides a technical solution: a steel pipe drilling device, comprising a base 1, with a support 2 and a housing 3 fixedly connected to the top surface of the base 1. A slag outlet 4 is provided between the housing 3 and the base 1, and a controller 5 is installed on the side wall of the housing 3. A drive roller 6 is rotatably connected to the top ends of the support 2. A track 7 is slidably sleeved on the outer surface of the drive roller 6. A driven roller 33 is rotatably sleeved on the other end of the track 7, and connecting belts 8 are fixedly sleeved on both sides of the track 7. The surfaces of the connecting belts 8 and the track 7 are respectively fixed...

[0042] A core body 10 and a core body 9 are fixedly connected. An accumulator 11 is fitted onto the inner surface of the track 7. A directional changer 12 is installed on the output end of the accumulator 11. A main guide line 13 is fixedly connected to the output end of the directional changer 12. A branch guide line 14 is connected to the outer surface of the main guide line 13. An electric switch 15 is connected in series on the branch guide line 14. The driven roller 33 is rotatably connected to the inner wall of the housing 3. The output end of the controller 5 is electrically connected to the accumulator 11, the directional changer 12, and the electric switch 15. The main guide line 13 is wound and sleeved around the outer surface of the core body 10, and the branch guide line 14 is wound and sleeved around the outer surface of the core body 9. The winding direction of the branch guide line 14 is opposite to the winding direction of the main guide line 13. The core body 9 and the core body 10 are set perpendicular to each other. A displacement sensor is installed on the connecting belt 8 above the core body 10 and is connected to the accumulator 11 corresponding to the core body 10. Number the displacement sensors.

[0043] Specifically, during the automatic steel pipe conveying process, an N-pole electromagnet is used to magnetize the front end of the steel pipe, making the front end of the steel pipe the S pole and the rear end the N pole. The steel pipe is then placed on the track 7, and the drive roller 6 is activated. The drive roller 6, in conjunction with the driven roller 33, drives the track 7 to rotate, thereby moving the steel pipe. During this process, as the steel pipe moves onto the track 7, the displacement sensor on the connecting belt 8 detects the steel pipe and generates a sensing signal. This sensing signal and numbering information are then sent to the controller 5. Multiple sensing signals and numbering information are involved. The controller 5 sorts the numbering information and divides it into front and rear groups based on the number of numbers. If the number of numbers is odd, the middle numbers are removed. The controller 5 then activates the corresponding numbered accumulator 11 based on the numbering information of the front group. The accumulator 11 then powers the main guide wire 13 through the inverter 12, thereby energizing the core 10 wound on the main guide wire 13. This generates a positive induced magnetic field, making the positive induced magnetic field...

[0044] The controller 5 repels the S-pole at the front end of the steel pipe, and simultaneously activates the corresponding numbered accumulator 11 according to the numbering information of the rear group. This causes the accumulator 11 to reverse the current through the inverter 12, and the reversed current is fed into the main guide line 13. This causes the core 9 wound on the main guide line 13 to generate a reverse induced magnetic field, which repels the N-pole at the rear end of the steel pipe. As a result, the entire steel pipe is repelled, allowing it to be positioned on the centerline of the track 7 and parallel to it. At this time, the controller 5 sends a closing command to all the electric switches 15 of the front and rear groups, which energizes the branch conductor 14. This causes the core 9 wound on the branch conductor 14 to generate an adsorption force, which in turn causes the core 9 to adsorb the steel pipe, achieving the purpose of stabilizing the movement of the steel pipe. This not only automatically transports the steel pipe, saving time and effort, but also ensures the accuracy of the steel pipe's posture and feeding position.

[0045] Example 2:

[0046] Please refer to Figures 4-8. This invention provides a technical solution: a steel pipe drilling device. A fixed frame 16 is fixedly connected between the inner walls of a housing 3. A groove is formed on the inner wall of the housing 3. A slider 18 is slidably sleeved in the groove. A movable frame 17 is fixedly connected between the side walls of slider 18. A cavity 19 is formed in the top side wall of both the movable frame 17 and the fixed frame 16. A toothed ring 20 is fixedly sleeved on the side wall of the cavity 19, and a sliding plate 21 is slidably connected to the side wall of the cavity 19. An electric push rod 22 is installed on one side of the sliding plate 21, and a slider 23 is fixedly connected to the other side of the sliding plate 21. A motor 24 is installed on the side wall of slider 23, and a gear 25 is fixedly connected to the output end of the motor 24. A pneumatic push rod 32 is installed between the movable frame 17 and the inner wall of the housing 3. The cross-sections of slider 18 and the groove are both T-shaped. The electric push rod 22... The input terminal is electrically connected to the controller 5, the gear 25 meshes with the gear ring 20, the slider 23 is slidably connected to the side wall of the cavity 19, and a connecting rod is fixedly connected between the sliders 23. The electric push rod 22...

[0047] A movable block 26 is fixedly connected to the output end of the electric push rod 22, which is slidably sleeved with the side wall of the cavity 19. A locking block 27 is slidably sleeved inside the movable block 26. Two locking blocks 28 are slidably sleeved inside each locking block 27. Two locking blocks 39 are slidably sleeved inside each locking block 28. Two locking blocks 30 are slidably sleeved inside each locking block 39. Sliding buttons 31 are rotatably connected to both sides of the locking blocks 30, 39, 28, and 27. The locking blocks 28, 39, and 30 are symmetrically arranged with respect to the locking blocks 28 and 29, respectively. The locking blocks 30, 39, 28, and 27 are all connected by sliding buttons 31.

[0048] Specifically, during the clamping of the steel pipe, the electric push rod 22 is simultaneously activated, causing the electric push rod 22 to push the moving block 26 to move in the opposite direction. This causes the moving block 26 to indirectly drive the clamping block 30 to contact the outer surface of the steel pipe. The clamping block 30 then rotates within the clamping block 29 via the sliding knob 31, initially bringing the clamping block 30 into contact with the surface of the steel pipe. As the electric push rod 22 further extends, the clamping block 29 experiences a reverse force from the clamping block 30, causing it to rotate within the clamping block 28. This initially adjusts the orientation of the clamping block 30, further bringing it into contact with the surface of the steel pipe. Finally, the clamping block 28 rotates within the clamping block 27, adjusting the orientation of the clamping block 29 and further adjusting the orientation of the clamping block 30, bringing the clamping block 30 into contact with the surface of the steel pipe. It fully adheres to the surface of the steel pipe to improve the clamping effect and avoid damage to the surface of the steel pipe. At the same time, the orientation of the clamping block 4 30 can be varied during the above process, so that the clamping block 4 30 can adapt to clamping steel pipes of different types and sizes, thus avoiding limiting the application range of the steel pipe drilling device. In addition, the above clamping process is relatively simple and does not require the operation of turning screws.

[0049] The working principle and usage process of this invention: When it is necessary to drill holes in a steel pipe, the following steps are taken:

[0050] A N-pole electromagnet magnetizes the front end of the steel pipe, making the front end the S pole and the rear end the N pole. The steel pipe is then placed on the track 7, and the drive roller 6 is activated. The drive roller 6, in conjunction with the driven roller 33, drives the track 7 to rotate, thereby moving the steel pipe. During this process, as the steel pipe moves onto the track 7, the displacement sensor on the connecting belt 8 detects the steel pipe and generates an induction signal. This induction signal and number information are then sent to the controller 5. Multiple induction signals and number information are generated during this process. The controller 5 sorts the number information and divides it into a front group and a rear group based on the number of numbers. If the number of numbers is odd, the middle numbers are removed. The controller 5 then activates the corresponding numbered battery 11 based on the number information of the front group. The battery 11 then powers the main conductor 13 through the inverter 12, causing the core 10 wound on the main conductor 13 to generate a positive induction magnetic field. The positive induced magnetic field repels the front S pole of the steel pipe. Simultaneously, the controller 5 activates the corresponding numbered accumulator 11 according to the rear group's numbering information. Accumulator 11 then reverses the current through inverter 12, allowing the reversed current to flow into the main guide line 13. This causes the core 9 wound on the main guide line 13 to generate a reverse induced magnetic field, which repels the rear N pole of the steel pipe, thus repelling the entire steel pipe. This allows the steel pipe to be positioned on the centerline of the track 7, parallel to it. Then, the controller 5 sends a closing command to all the electric switches 15 of the front and rear groups, energizing the branch conductor 14. This causes the core 9 wound on the branch conductor 14 to generate an adsorption force, allowing the core 9 to adsorb the steel pipe, achieving stable movement of the steel pipe. This not only automatically transports the steel pipe, saving time and effort, but also ensures the accuracy of the steel pipe's posture and feeding position. When the steel pipe enters the housing 3 with the track 7, the accumulator 11... The system gradually closes from the front group to the rear group, causing the steel pipe to gradually detach from the fixed position. During this process, the steel pipe gradually passes through the fixed frame 16 and eventually lies between the movable frames 17. At this point, the system synchronously starts...

[0051] The electric push rod 22 is activated, causing the moving block 26 to move in the opposite direction. This indirectly causes the locking block 30 to contact the outer surface of the steel pipe. The locking block 30 then rotates within the locking block 29 via the sliding knob 31, initially bringing it into contact with the steel pipe surface. As the electric push rod 22 extends further, the locking block 29 experiences a counterforce from the locking block 30, causing it to rotate within the locking block 28. This initially adjusts the orientation of the locking block 30, further bringing it into contact with the steel pipe surface. Finally, the locking block 28 rotates within the locking block 27, adjusting the orientation of the locking block 29 and further adjusting the orientation of the locking block 30, ensuring it fully contacts the steel pipe surface. This improves the clamping effect and prevents damage to the steel pipe surface. Simultaneously, during the above process... The four-piece clamp 30 has a variable orientation, which allows it to be adapted to clamping different types and sizes of steel pipes, thus avoiding limiting the application range of the steel pipe drilling device. At the same time, the clamping process is relatively simple and does not require the operation of turning screws.

[0052] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A steel pipe drilling device, comprising a base (1), characterized in that, The top surface of the base (1) is fixedly connected to a bracket (2) and a housing (3). A slag outlet (4) is provided between the housing (3) and the base (1). A controller (5) is installed on the side wall of the housing (3). An active roller (6) is rotatably connected between the top ends of the bracket (2). A track (7) is slidably sleeved on the outer surface of the active roller (6). A driven roller (33) is rotatably sleeved on the other end of the track (7). Connecting elements are fixedly sleeved on both sides of the track (7). The connecting belt (8) and the track (7) are respectively fixedly sleeved with a core two (10) and a core one (9). The inner surface of the track (7) is fitted with an energy storage device (11). A converter (12) is installed on the output end of the energy storage device (11). A main guide line (13) is fixedly connected to the output end of the converter (12). A branch conductor (14) is connected to the outer surface of the main guide line (13). An electric switch (15) is connected in series on the branch conductor (14). The driven roller (33) is rotatably connected to the inner wall of the housing (3), and the output end of the controller (5) is electrically connected to the accumulator (11), the inverter (12) and the electric switch (15) respectively. The main guide line (13) is wrapped around the outer surface of the second core (10), the branch guide line (14) is wrapped around the outer surface of the first core (9), and the winding direction of the branch guide line (14) is opposite to the winding direction of the main guide line (13). The first core (9) and the second core (10) are set perpendicular to each other. A displacement sensor is installed on the connecting strip (8) above the core (10), and the battery (11) and displacement sensor corresponding to the core (10) are numbered.

2. The steel pipe drilling device according to claim 1, characterized in that, A fixed frame (16) is fixed between the inner sidewalls of the housing (3). A sliding groove is provided on the inner sidewall of the housing (3). A slider (18) is slidably sleeved in the sliding groove. A movable frame (17) is fixed between the sidewalls of the slider (18). A cavity (19) is provided in the top sidewall of both the movable frame (17) and the fixed frame (16). A toothed ring (20) is fixedly sleeved on the sidewall of the cavity (19). A sliding plate (21) is slidably connected to the sidewall of the cavity (19). An electric push rod (22) is installed on one side of the sliding plate (21). A slider (23) is fixedly connected to the other side of the sliding plate (21). A motor (24) is installed on the sidewall of the slider (23). A gear (25) is fixedly connected to the output end of the motor (24). A pneumatic push rod (32) is installed between the movable frame (17) and the inner sidewall of the housing (3).

3. The steel pipe drilling device according to claim 2, characterized in that, The cross-sections of the slider (18) and the groove are both T-shaped. The input end of the electric push rod (22) is electrically connected to the controller (5). The gear (25) is meshed with the gear ring (20).

4. A steel pipe drilling device according to claim 2, characterized in that, The second slider (23) is slidably connected to the side wall of the cavity (19), and a connecting rod is fixed between the second slider (23). The electric push rod (22) is slidably sleeved with the side wall of the cavity (19).

5. A steel pipe drilling device according to claim 2, characterized in that, A movable block (26) is fixedly connected to the output end of the electric push rod (22). A locking block 1 (27) is slidably sleeved inside the movable block (26). Two locking blocks 2 (28) are slidably sleeved inside each locking block 1 (27). Two locking blocks 3 (29) are slidably sleeved inside each locking block 2 (28). Two locking blocks 4 (30) are slidably sleeved inside each locking block 3 (29). Sliding buttons (31) are rotatably connected to both sides of the locking blocks 4 (30), 3 (29), 2 (28) and 1 (27).

6. A steel pipe drilling device according to claim 5, characterized in that, The second card block (28) is symmetrically arranged about the first card block (27), the third card block (29) is symmetrically arranged about the second card block (28), and the fourth card block (30) is symmetrically arranged about the third card block (29).

7. A steel pipe drilling device according to claim 5, characterized in that, The four (30), three (29), two (28) and one (27) of the card block are all connected by a slide button (31).

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