Hole making equipment for steel structure production

Abstract

The utility model discloses a steel structure production hole making device which comprises a supporting frame, a punching mechanism is arranged on the supporting frame, the punching mechanism comprises sliding rods, sliding seats, an installation frame, a driving machine, a hydraulic cylinder, a quick fixing mechanism and a drill bit, the multiple sets of sliding rods are fixed to the supporting frame, the multiple sets of sliding seats are arranged on the outer walls of the multiple sets of sliding rods in a sliding mode, and the multiple sets of sliding seats are arranged on the installation frame. The mounting frame is fixed to the outer walls of the multiple sets of sliding seats, the driving machine is fixed to the outer wall of the mounting frame, the hydraulic cylinder is fixed in the supporting frame, the telescopic end of the hydraulic cylinder is fixedly connected with the mounting frame, the quick fixing mechanism comprises a fixing sleeve, sliding blocks, clamping blocks, a pushing block, a sliding sleeve, a mounting rod and a clamping groove, the fixing sleeve is fixed to the output end of the driving machine, and the sliding blocks are arranged in the fixing sleeve in a sliding mode. According to the quick fixing mechanism, through exquisite cooperation of a fixing sleeve, a sliding block, a clamping block and a mounting rod, quick mounting and dismounting of the drill bit are achieved, and accurate positioning and rotation prevention of the drill bit in the mounting process are guaranteed through the design of a polygonal adaptive block and an adaptive groove.

Description

Technical Field

[0001] This utility model relates to the field of steel structure manufacturing technology, and more specifically, it relates to a hole-making device for steel structure production. Background Technology

[0002] In the field of modern steel structure manufacturing, efficient and precise drilling is a key link to ensure the quality of component processing and production efficiency. However, the steel structure drilling equipment currently in widespread use generally adopts the traditional bolt fixing method to install drill bits. Operators need to use professional wrenches or tools to rotate and tighten and loosen the drill bits multiple times. This connection method is particularly cumbersome in the case of mass production, drill bit wear and replacement, and frequent changes in drilling specifications. Especially in the processing of large steel structure components, the complicated drill bit replacement steps not only consume a lot of production time, but also easily lead to drill bit damage or unstable installation due to improper operation, which seriously affects the continuity of the production line and the processing accuracy.

[0003] In steel structure manufacturing workshops and on-site construction environments, the ease of operation and maintenance efficiency of equipment directly affect project delivery cycles and production costs. This is especially true in time-sensitive situations such as multi-specification hole diameter processing and emergency order handling, where traditional drill bit connection structures suffer from problems such as long disassembly and assembly times, strong tool dependence, and complex operation. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides a hole-making device for steel structure production to solve the technical problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a steel structure production hole-making equipment, including a support frame, on which a hole-making mechanism is provided. The hole-making mechanism includes a sliding rod, a sliding seat, a mounting frame, a drive motor, a hydraulic cylinder, a quick-fixing mechanism, and a drill bit. Multiple sets of sliding rods are fixed to the support frame, multiple sets of sliding seats slide on the outer wall of multiple sets of sliding rods, the mounting frame is fixed to the outer wall of multiple sets of sliding seats, the drive motor is fixed to the outer wall of the mounting frame, the hydraulic cylinder is fixed inside the support frame and its telescopic end is fixedly connected to the mounting frame, the quick-fixing mechanism includes a fixed sleeve, a slider, a locking block, a push block, a sliding sleeve, a mounting rod, and a slot, the fixed sleeve is fixed to the output end of the drive motor, multiple sets of sliders slide inside the fixed sleeve, the locking block is fixed to the bottom end of multiple sets of sliders, the push block is fixed to the top end of multiple sets of sliders, the sliding sleeve slides on the outer wall of the fixed sleeve, the mounting rod is inserted into the fixed sleeve, the slot is provided on the outer wall of the mounting rod, and the drill bit is fixed to the bottom end of the mounting rod.

[0008] The present invention is further configured such that an adapter block is fixedly provided on the outer wall of the mounting rod, and an adapter groove is provided inside the fixing sleeve. Both the adapter block and the adapter groove are polygonal. The polygonal design effectively prevents the mounting rod from deflecting during high-speed rotation, ensuring that the rotation axis of the drill bit and the output shaft of the drive motor remain coaxial, thereby improving drilling accuracy and processing quality.

[0009] The present invention is further configured such that the outer wall of the fixed sleeve is provided with a movable groove, and the movable groove is provided in multiple sets and is slidably connected to multiple sets of push blocks respectively. The multiple sets of movable grooves provide a precise radial movement track for the push blocks, ensuring that the movement trajectory of the push blocks is stable and controllable, improving the reliability and operation accuracy of the locking mechanism, while simplifying the structural design and reducing the manufacturing difficulty.

[0010] The present invention is further configured such that a compression spring is connected between the inner wall of each of the multiple sets of push blocks and the movable groove. The compression spring provides a continuous external pushing force to the push block, so that the locking system remains in the open position when it is not activated, while forming a pre-tightening force in the locked state to prevent loosening due to vibration, and ensuring that the push block can automatically return to the ready state after unlocking.

[0011] The present invention is further configured such that a sliding hole is provided in the mounting rod, a top block is slidably provided in the sliding hole, and a compression spring is connected between the top block and the bottom end of the sliding hole. The compression spring provides axial elastic support to the mounting rod through the top block. After the lock is released, the mounting rod can be automatically pushed out of the fixing sleeve, realizing the rapid separation of the drill bit, reducing operation steps, improving replacement efficiency, and is especially suitable for application in scenarios where drill bits are frequently replaced.

[0012] The present invention is further configured such that the outer walls of the multiple sets of push blocks are inclined, and the top of the sliding sleeve is provided with a rounded corner. The combination of the inclined surface and the rounded corner forms a wedge locking mechanism, which allows the radial pressure on the push block to gradually increase when the sliding sleeve moves, thereby achieving a smooth locking process. At the same time, it reduces local wear, extends the service life of the components, and makes the operation smoother and without jamming.

[0013] The present invention is further configured such that a transmission mechanism is provided on the outer wall of the fixed sleeve. The transmission mechanism includes a mating sleeve, a rotating sleeve, a threaded sleeve, a positioning sleeve, a sliding groove, a positioning block, a positioning slot, and a push spring. The mating sleeve is fixed to the bottom surface of the sliding sleeve, the rotating sleeve rotates on the outer wall of the fixed sleeve, the threaded sleeve is fixed to the top surface of the rotating sleeve, and the positioning sleeve is fixed to the bottom surface of the rotating sleeve. Multiple sets of sliding grooves are provided and distributed on the inner wall of the positioning sleeve. The positioning block slides in multiple sets of sliding grooves. Multiple sets of push springs are provided, and their two ends are respectively connected to multiple sets of positioning blocks and the inner wall of the sliding groove. This transmission mechanism achieves precise axial force control through simple rotation operation, converting rotational motion into linear motion of the sliding sleeve. This eliminates the need for any tools in the locking and releasing process of the drill bit, greatly simplifying the operation process and improving work efficiency. At the same time, the synergistic effect of multiple components ensures the stability and reliability of the connection.

[0014] The present invention is further configured such that the bottom ends of the multiple positioning blocks and the positioning grooves are all arc-shaped. The arc-shaped design increases the contact area between the positioning blocks and the positioning grooves, provides smooth entry and exit guidance, makes the positioning process more stable and reliable, and provides clear tactile feedback during the rotation of the rotating sleeve, allowing the operator to clearly perceive the locking position, thus improving the convenience of operation and the locking accuracy.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a hole-making device for steel structure production, which has the following beneficial effects:

[0017] 1. The drilling mechanism adopts a multi-set sliding rod and sliding seat design, combined with a hydraulic cylinder drive system, to achieve precise positioning and smooth movement of the drilling device. The sliding rod provides a stable guide rail, ensuring that the mounting frame will not shift or shake during movement, greatly improving drilling accuracy. The hydraulic cylinder provides stable and sufficient power output, which can adapt to the processing requirements of materials with various hardnesses. The overall structure is compact and robust. Through the rigid connection between the sliding seat and the mounting frame, the impact of working vibration on drilling quality is effectively reduced. This design solves the problems of inaccurate positioning and unstable movement of traditional drilling equipment, and is particularly suitable for application in the processing of large steel structure components, significantly improving production efficiency and processing quality.

[0018] 2. The quick-locking mechanism achieves rapid installation and removal of drill bits through the ingenious cooperation of the fixed sleeve, slider, locking block, and mounting rod. The polygonal adapter block and adapter slot design ensures precise positioning and anti-rotation of the drill bit during installation, while the locking block and slot engagement mechanism provides reliable axial fixation. The compression spring provides the necessary preload for the entire locking system, ensuring a stable connection under high-speed rotation and vibration conditions. The beveled design of the push block's outer wall and the rounded corners of the sliding sleeve make operation smoother and reduce jamming. This self-locking quick-connection solution completely solves the problems of cumbersome disassembly and assembly and strong tool dependence of traditional bolt connections, reducing drill bit replacement time from minutes to seconds, greatly improving the practicality and work efficiency of the equipment, and is especially suitable for the needs of mass production and multi-specification drilling operations.

[0019] 3. The transmission mechanism adopts a combination design of rotating sleeve, threaded sleeve, and mating sleeve. Locking and releasing can be completed through simple rotation operation without the need for any auxiliary tools. The sliding groove in the positioning sleeve cooperates with the positioning block, combined with the elastic support of the push spring, to form a reliable automatic positioning system. This allows the operator to perceive clear locking feedback. The arc-shaped positioning block and positioning groove design increases the contact area, improving positioning accuracy and locking strength. The entire transmission mechanism is ingeniously designed and compact, with excellent anti-loosening performance. It can maintain a stable locked state even in high-frequency vibration environments. This user-friendly operation design greatly reduces the technical requirements for operators, simplifies the training process, expands the application scenarios of the equipment, and extends the service life of drill bits and connecting parts, providing more reliable and efficient equipment support for steel structure production. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a steel structure hole-making device according to the present invention;

[0021] Figure 2 This is a schematic diagram of the mounting bracket in this utility model;

[0022] Figure 3 This is a cross-sectional view of the positioning sleeve in this utility model;

[0023] Figure 4 This is a cross-sectional view of the fixing sleeve in this utility model;

[0024] Figure 5 This is a cross-sectional view of the mounting rod in this utility model.

[0025] In the diagram: 1. Support frame; 2. Slide rod; 3. Slide block; 4. Mounting frame; 5. Drive motor; 6. Hydraulic cylinder; 7. Drill bit; 8. Fixed sleeve; 9. Slider; 10. Locking block; 11. Push block; 12. Sliding sleeve; 13. Mounting rod; 14. Locking groove; 15. Adaptor block; 16. Adaptor groove; 17. Movable groove; 18. Compression spring; 19. Sliding hole; 20. Top block; 21. Compression spring; 22. Mating sleeve; 23. Rotating sleeve; 24. Threaded sleeve; 25. Positioning sleeve; 26. Sliding groove; 27. Positioning block; 28. Positioning groove; 29. ​​Push spring. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] Please see Figures 1-5 A steel structure drilling equipment includes a support frame 1, on which a drilling mechanism is mounted. The drilling mechanism includes a slide rod 2, a slide seat 3, a mounting frame 4, a drive motor 5, a hydraulic cylinder 6, a quick-release mechanism, and a drill bit 7. Multiple sets of slide rods 2 are fixed to the support frame 1. Multiple sets of slide seats 3 slide on the outer walls of the multiple sets of slide rods 2. The mounting frame 4 is fixed to the outer walls of the multiple sets of slide seats 3. The drive motor 5 is fixed to the outer wall of the mounting frame 4. The hydraulic cylinder 6 is fixed inside the support frame 1, and its telescopic end is fixedly connected to the mounting frame 4. The quick-fix mechanism includes a fixed sleeve 8, a slider 9, a locking block 10, a push block 11, a sliding sleeve 12, a mounting rod 13, and a slot 14. The fixed sleeve 8 is fixed to the output end of the drive motor 5. The slider 9 is provided with multiple sets of sliding within the fixed sleeve 8. The locking block 10 is fixed to the bottom end of multiple sets of sliders 9. The push block 11 is fixed to the top end of multiple sets of sliders 9. The sliding sleeve 12 slides on the outer wall of the fixed sleeve 8. The mounting rod 13 is inserted into the fixed sleeve 8. The slot 14 is provided on the outer wall of the mounting rod 13. The drill bit 7 is fixed to the bottom end of the mounting rod 13.

[0030] An adapter block 15 is fixedly provided on the outer wall of the mounting rod 13, and an adapter groove 16 is provided inside the fixing sleeve 8. Both the adapter block 15 and the adapter groove 16 are polygonal. The polygonal adapter block 15 and the adapter groove 16 form a keyway fit. When the mounting rod 13 is inserted into the fixing sleeve 8, the adapter block 15 is embedded in the adapter groove 16 to prevent the mounting rod 13 from rotating relative to each other during high-speed rotation, ensuring the coaxial transmission between the drill bit 7 and the drive machine 5 and improving the machining accuracy.

[0031] The outer wall of the fixed sleeve 8 is provided with a movable groove 17. Multiple movable grooves 17 are provided and are slidably connected to multiple sets of push blocks 11 respectively. The multiple sets of movable grooves 17 provide a radial movement track for the push blocks 11, restricting the push blocks 11 to slide only in the radial direction without deviation, ensuring that the push blocks 11 can accurately push the slider 9 inward, forming a reliable locking mechanism.

[0032] Compression springs 18 are connected between the inner walls of multiple push blocks 11 and the movable groove 17. The compression springs 18 provide a continuous external pushing force to the push blocks 11, so that the push blocks 11 are naturally in the extended state when they are not subjected to external force. When the sliding sleeve 12 is pressed down, the compression springs 18 are compressed and stored. After the sliding sleeve 12 moves up, the compression springs 18 release energy to push the push blocks 11 to reset, thus realizing the automatic unlocking function.

[0033] The mounting rod 13 has a sliding hole 19, and a top block 20 is slidably disposed in the sliding hole 19. A compression spring 21 is connected between the top block 20 and the bottom end of the sliding hole 19. When the mounting rod 13 is inserted into the fixing sleeve 8, the top block 20 is blocked by the inner wall of the fixing sleeve 8 and compresses the compression spring 21. When the lock is released, the compression spring 21 releases energy to push the top block 20 outward, thereby automatically pushing the mounting rod 13 out of the fixing sleeve 8 and realizing the rapid separation of the drill bit 7.

[0034] The outer walls of multiple push blocks 11 are set as inclined surfaces, and the top of the sliding sleeve 12 is provided with rounded corners. The inclined surface design of the outer wall of the push block 11 and the rounded corners at the top of the sliding sleeve 12 form a wedge-shaped contact surface. When the sliding sleeve 12 moves down, the rounded corners slide along the inclined surface, converting the axial motion into the radial motion of the push block 11, so that the push block 11 gradually pushes the slider 9 inward, achieving a smooth locking process.

[0035] The outer wall of the fixed sleeve 8 is provided with a transmission mechanism, which includes a mating sleeve 22, a rotating sleeve 23, a threaded sleeve 24, a positioning sleeve 25, a sliding groove 26, a positioning block 27, a positioning slot 28, and a push spring 29. The mating sleeve 22 is fixed to the bottom surface of the sliding sleeve 12, the rotating sleeve 23 rotates on the outer wall of the fixed sleeve 8, the threaded sleeve 24 is fixed to the top surface of the rotating sleeve 23, the positioning sleeve 25 is fixed to the bottom surface of the rotating sleeve 23, and multiple sets of sliding grooves 26 are provided on the inner wall of the positioning sleeve 25. The positioning block 27 slides in multiple sets of sliding grooves 26. Inside, the push spring 29 is provided with multiple sets, and each end is connected to multiple sets of positioning blocks 27 and the inner wall of the slide groove 26 respectively. When the rotating sleeve 23 is rotated, the threaded sleeve 24 and the mating sleeve 22 perform threaded transmission, converting the rotational motion into the axial motion of the slide sleeve 12. Through the cooperation of the positioning block 27 and the positioning groove 28 in the positioning sleeve 25, a positioning and locking function is provided at a specific position. The push spring 29 ensures reliable contact between the positioning block 27 and the positioning groove 28. The entire transmission chain transforms the simple rotational operation into precise locking force control.

[0036] The bottom ends of multiple positioning blocks 27 and positioning grooves 28 are all set in an arc shape. The arc shape design of the bottom ends of positioning blocks 27 and positioning grooves 28 increases the contact area, allowing positioning blocks 27 to slide smoothly along the arc contour of positioning grooves 28, reducing local stress concentration. At the same time, it provides obvious tactile feedback during the rotation of rotating sleeve 23, allowing the operator to perceive a clear locking position.

[0037] In this embodiment, during use, the drill bit 7 is first installed. The mounting rod 13 is inserted into the fixed sleeve 8, and the adapter block 15 is inserted into the adapter groove 16. The top block 20 abuts against the inner wall of the fixed sleeve 8 and compresses the compression spring 21. The rotating sleeve 23 is rotated clockwise, which drives the threaded sleeve 24 to rotate. The threaded sleeve 24 and the mating sleeve 22 are threadedly engaged, thereby pushing the sliding sleeve 12 to abut against the outer wall of the multiple sets of push blocks 11. The multiple sets of push blocks 11 slide along the movable groove 17 and compress the multiple sets of compression springs 18. At the same time, the slider 9 pushes the locking block 10 to engage in the locking groove 14. The multiple sets of push springs 29 push the multiple sets of positioning blocks 27 to abut against the positioning groove 28 to position the rotating sleeve 23. The hydraulic cylinder 6 pushes the mounting frame 4. The mounting frame 4 slides along the sliding rod 2 through the multiple sets of sliding seats 3 and starts the drive frame to drive the drill bit 7 to rotate. The drill bit 7 drills holes in the workpiece.

[0038] More specifically, when it is necessary to disassemble the drill bit 7, rotate the rotating sleeve 23 counterclockwise. The arc design of the multiple sets of positioning grooves 28 pushes the positioning block 27 to slide in the slide groove 26 and squeezes the push spring 29. The rotating sleeve 23 drives the threaded sleeve 24 to perform threaded transmission with the mating sleeve 22, so that the mating sleeve 22 drives the slide sleeve 12 to release the contact with the multiple sets of push blocks 11. The multiple sets of compression springs 18 reset and push the push block 11 to slide outward along the movable groove 17. The slider 9 pulls the locking block 10 out of the locking groove 14. The compression spring 21 resets and pushes the mounting rod 13 out of the fixed sleeve 8, thus completing the disassembly of the drill bit 7.

[0039] In summary, when using or operating the overall equipment: First, install the drill bit 7, insert the mounting rod 13 into the fixed sleeve 8, insert the adapter block 15 into the adapter groove 16, and have the top block 20 abut against the inner wall of the fixed sleeve 8 to compress the compression spring 21. Rotate the rotating sleeve 23 clockwise to drive the threaded sleeve 24 to rotate. The threaded sleeve 24 and the mating sleeve 22 are threaded together, thereby pushing the sliding sleeve 12 to abut against the outer wall of the multiple sets of push blocks 11. The multiple sets of push blocks 11 slide along the movable groove 17 and compress the multiple sets of compression springs 18. At the same time, the slider 9 pushes the locking block 10 to engage in the locking groove 14. The multiple sets of push springs 29 push the multiple sets of positioning blocks 27 to abut against the positioning groove 28 to position the rotating sleeve 23. The hydraulic cylinder 6 pushes the mounting frame 4. The mounting frame 4 slides along the sliding rod 2 through the multiple sets of sliding seats 3 and starts the drive frame to drive the drill bit 7 to rotate. The drill bit 7 drills holes in the workpiece.

[0040] However, when it is necessary to disassemble the drill bit 7, rotate the rotating sleeve 23 counterclockwise. The arc design of multiple positioning grooves 28 pushes the positioning block 27 to slide in the slide groove 26 and squeezes the push spring 29. The rotating sleeve 23 drives the threaded sleeve 24 to perform threaded transmission with the mating sleeve 22, so that the mating sleeve 22 drives the slide sleeve 12 to release the contact with the multiple push blocks 11. The multiple compression springs 18 reset and push the push block 11 to slide outward along the movable groove 17. The slider 9 pulls the locking block 10 to disengage from the locking groove 14. The compression spring 21 resets and pushes the mounting rod 13 to disengage from the fixed sleeve 8, thus completing the disassembly of the drill bit 7.

[0041] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A steel structure drilling equipment, comprising a support frame (1), characterized in that: The support frame (1) is equipped with a drilling mechanism, which includes a slide rod (2), a slide seat (3), a mounting frame (4), a drive motor (5), a hydraulic cylinder (6), a quick-fix mechanism, and a drill bit (7). Multiple sets of slide rods (2) are fixed to the support frame (1). Multiple sets of slide seats (3) slide on the outer walls of multiple sets of slide rods (2). The mounting frame (4) is fixed to the outer walls of multiple sets of slide seats (3). The drive motor (5) is fixed to the outer wall of the mounting frame (4). The hydraulic cylinder (6) is fixed inside the support frame (1) and its telescopic end is fixedly connected to the mounting frame (4). The quick-fix mechanism includes a fixing sleeve (8). The components include a slider (9), a locking block (10), a push block (11), a sliding sleeve (12), an mounting rod (13), and a slot (14). The fixed sleeve (8) is fixed to the output end of the drive motor (5). The slider (9) is provided with multiple sets of sliding blocks that slide inside the fixed sleeve (8). The locking block (10) is fixed to the bottom end of multiple sets of sliders (9). The push block (11) is fixed to the top end of multiple sets of sliders (9). The sliding sleeve (12) slides on the outer wall of the fixed sleeve (8). The mounting rod (13) is inserted into the fixed sleeve (8). The slot (14) is provided on the outer wall of the mounting rod (13). The drill bit (7) is fixed to the bottom end of the mounting rod (13).

2. The hole-making equipment for steel structure production according to claim 1, characterized in that: The mounting rod (13) has an adapter block (15) fixedly installed on its outer wall, and the fixing sleeve (8) has an adapter groove (16) inside. Both the adapter block (15) and the adapter groove (16) are polygonal.

3. The hole-making equipment for steel structure production according to claim 2, characterized in that: The outer wall of the fixed sleeve (8) is provided with a movable groove (17), and the movable groove (17) is provided in multiple sets and is slidably connected to multiple sets of push blocks (11).

4. The steel structure drilling equipment according to claim 3, characterized in that: multiple sets Compression springs (18) are connected between the inner wall of the push block (11) and the movable groove (17).

5. A hole-making device for steel structure production according to claim 4, characterized in that: The mounting rod (13) has a sliding hole (19) inside, and a top block (20) is slidably provided inside the sliding hole (19). A compression spring (21) is connected between the top block (20) and the bottom end of the sliding hole (19).

6. A steel structure drilling equipment according to claim 5, characterized in that: multiple sets The outer wall of the push block (11) is set as an inclined surface, and the top of the sliding sleeve (12) is provided with a rounded corner.

7. A hole-making device for steel structure production according to claim 6, characterized in that: The outer wall of the fixed sleeve (8) is provided with a transmission mechanism, which includes a mating sleeve (22), a rotating sleeve (23), a threaded sleeve (24), a positioning sleeve (25), a sliding groove (26), a positioning block (27), a positioning slot (28), and a push spring (29). The mating sleeve (22) is fixed to the bottom surface of the sliding sleeve (12), the rotating sleeve (23) rotates on the outer wall of the fixed sleeve (8), the threaded sleeve (24) is fixed to the top surface of the rotating sleeve (23), the positioning sleeve (25) is fixed to the bottom surface of the rotating sleeve (23), the sliding groove (26) is provided in multiple sets distributed on the inner wall of the positioning sleeve (25), the positioning block (27) slides in multiple sets of sliding grooves (26), and the push spring (29) is provided in multiple sets with its two ends respectively connected to multiple sets of positioning blocks (27) and the inner wall of the sliding groove (26).

8. A hole-making device for steel structure production according to claim 7, characterized in that: The bottom of the multiple positioning blocks (27) and the positioning groove (28) are both set to be arc-shaped.

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