Steel structure butt joint device for steel structure construction

Abstract

The application relates to the technical field of welding equipment, and discloses a steel structure butt joint device for steel structure construction, which comprises two adjustable steel pipe placing mechanisms and a pressure-adjustable driving mechanism, and the structure comprises a double-shaft motor located at the center of the two adjustable steel pipe placing mechanisms and serving as a driving source, a caterpillar belt capable of rotating two steel pipes placed at the center of driven rollers, and a piston plate capable of changing the slackness of the caterpillar belt. The steel structure butt joint device for steel structure construction can clamp the steel pipes needing to be welded in the form of three-point positioning on the side of the driven rollers, the caterpillar belt driving the steel pipes to rotate can exert downward pressure on the steel pipes, so that the stability of the steel pipes during rotation is ensured, in addition, the contact area between the caterpillar belt and the steel pipes is relatively wide, so that the speed consistency of the two steel pipes during rotation is improved, and the quality of the two steel pipes after butt joint is improved.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, specifically to a steel structure docking device for steel structure construction. Background Technology

[0002] During steel structure construction, in order to ensure the accuracy, quality, and construction safety of steel component connections, a steel structure connection device is required. The existing steel structure connection device mainly consists of driven rollers and a welding gun. The two steel pipes to be welded need to be placed at the center of two sets of driven rollers. First, the weld size between the two steel pipes needs to be adjusted. Then, the dual-axis motor is started to drive the two sets of driven rollers to rotate in a specific direction. Under the action of static friction, the driven rollers will drive the two steel pipes to rotate. Then, the welding gun is turned on to perform welding work on the weld joint of the steel pipes.

[0003] The magnitude of the aforementioned static friction depends entirely on the weight of the steel pipe itself. Furthermore, the contact area between the driven roller and the side of the steel pipe is very small (approaching linear contact), resulting in relatively small static friction during processing. Consequently, slippage is likely to occur between the driven roller and the steel pipe, leading to poor consistency in the rotational speed between the two steel pipes. This results in poor welding quality during the welding process. Additionally, the limited downward gravity of the steel pipe contributes to its poor stability during operation. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a steel structure docking device for steel structure construction. This device clamps the steel pipes to be welded onto the side of the driven roller using a three-point positioning method. Furthermore, the track driving the steel pipes to rotate applies downward pressure, ensuring the stability of the steel pipes during rotation. In addition, the wide contact area between the track and the steel pipes improves the speed consistency of the two steel pipes during rotation, thereby improving the quality of the docking and solving the aforementioned technical problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a steel structure docking device for steel structure construction, comprising a welding machine with controllable welding position, and two adjustable steel pipe placement mechanisms, each comprising symmetrical driven rollers for placing steel pipes, an upper curved connecting rod capable of adjusting the horizontal distance between the driven rollers, and a horizontal hollow rod capable of limiting the movement of the driven rollers in the horizontal direction; and a pressure-regulating drive mechanism, comprising a dual-axis motor located at the center of the two adjustable steel pipe placement mechanisms and serving as the drive source, a track capable of rotating the two steel pipes placed at the center of the driven rollers, and a piston plate capable of changing the slack of the track.

[0006] Preferably, the adjustable steel pipe placement mechanism further includes a bottom mounting base that can be installed on the working surface. Two symmetrical horizontal hollow rods are fixedly mounted on the upper surface of the bottom mounting base via a longitudinal mounting base. Each horizontal hollow rod has a horizontal component movable cavity inside. Both ends of the horizontal hollow rod have a first rod body through-hole connecting the external space and both ends of the horizontal component movable cavity. Two built-in movable plates capable of moving along their axial direction are placed inside the horizontal component movable cavity. A horizontal telescopic rod passing through the first rod body through-hole is fixedly mounted at the end of each built-in movable plate. A lower connecting rod is fixedly mounted at the end of each horizontal telescopic rod. A tee mounting head is fixedly mounted at the top of each lower connecting rod. A rotatable driven shaft is mounted on the opposite rotating end of each tee mounting head via a bearing. A driven roller that rotates with the shaft is fixedly mounted on the shaft of each driven shaft. An upper curved connecting rod is fixedly mounted on the top of each of the two symmetrical tee mounting heads. An opposing fixed plate is provided in the middle of each of the two upper curved connecting rods.

[0007] Preferably, the structural shape of the perforated cross section of the first rod is consistent with the structural shape of the cross section of the horizontal telescopic rod, both being polygonal structures, and the structural dimensions of the perforated cross section of the first rod match the structural dimensions of the cross section of the horizontal telescopic rod.

[0008] Preferably, the pressure-regulating drive mechanism further includes a longitudinal hollow column. The bottom of the longitudinal hollow column is provided with a placement base plate integrally formed therewith. The placement base plate contains a longitudinal component movable cavity. The top of the longitudinal component movable cavity is provided with a liquid pre-reserved cavity. The top of the liquid pre-reserved cavity is provided with a second rod through-hole connecting to the external space. The interior of the longitudinal component movable cavity contains a piston plate capable of moving along its axial direction. A compressed helical spring is placed at the bottom of the piston plate. A longitudinal telescopic rod, penetrating the liquid pre-reserved cavity and the second rod through-hole, is fixedly installed at the top of the piston plate. A motor fixing sleeve is fixedly installed at the top of the longitudinal telescopic rod. A horizontally positioned dual-axis motor is fixedly installed at the center of the motor fixing sleeve. A drive pulley is fixedly fitted onto each of the two rotor ends of the dual-axis motor. A track is fitted into each drive pulley. A liquid docking channel connecting to the liquid pre-reserved cavity is provided on the circumferential side of the longitudinal hollow column.

[0009] Preferably, the structural shape of the perforated cross section of the second rod is consistent with the structural shape of the cross section of the longitudinal telescopic rod, both being polygonal structures, and the structural dimensions of the perforated cross section of the second rod match the structural dimensions of the cross section of the longitudinal telescopic rod.

[0010] Preferably, the elastic strength of the helical spring in its initial state is sufficient to drive the dual-axis motor and the track to return to their original position.

[0011] Preferably, it also includes a distance adjustment mechanism, the structure of which includes a first external thread rod and a second external thread rod fixedly connected to two opposing fixed plates, a longitudinal threaded sleeve capable of changing the distance between the first external thread rod and the second external thread rod, and a polygonal limiting rod capable of preventing relative rotation between the first external thread rod and the second external thread rod.

[0012] Preferably, the distance adjustment mechanism further includes a longitudinal threaded sleeve, a first external threaded rod, and a second external threaded rod. One end of the longitudinal threaded sleeve is provided with a first internal threaded cavity with a concave structure, and the other end of the longitudinal threaded sleeve is provided with a second internal threaded cavity with a concave structure. The rod body of the first external threaded rod is installed inside the first internal threaded cavity through the first thread structure, and the rod body of the second external threaded rod is installed inside the second internal threaded cavity through the second thread structure. The first and second external threaded rods are provided with polygonal limiting cavities with concave structures at their opposite ends. A polygonal limiting rod inserted into the polygonal limiting cavity is fixedly installed at the center of the longitudinal threaded sleeve. One end of the first external threaded rod is provided with a first connecting plate integrally formed with it and fixedly connected to one of the opposing fixed plates. One end of the second external threaded rod is provided with a second connecting plate integrally formed with it and fixedly connected to the other opposing fixed plate.

[0013] Preferably, the cross-sectional shape of the polygonal limiting cavity is consistent with the cross-sectional shape of the polygonal limiting rod, both being polygonal structures, and the structural dimensions of the polygonal limiting cavity cross-section match the structural dimensions of the polygonal limiting rod cross-section.

[0014] Preferably, the first thread structure includes an internal thread structure disposed inside the first internal thread cavity and an external thread structure disposed on the first external thread rod body, and the second thread structure includes an internal thread structure disposed inside the second internal thread cavity and an external thread structure disposed on the second external thread rod body, and the helical direction of the first thread structure is opposite to the helical direction of the second thread structure.

[0015] Compared with the prior art, the present invention provides a steel structure docking device for steel structure construction, which has the following beneficial effects: 1. It can clamp the steel pipe to be welded on the side of the driven roller in a three-point positioning manner, and the track that drives the steel pipe to rotate can apply downward pressure to the steel pipe, thereby ensuring the stability of the steel pipe during rotation. In addition, the contact area between the track and the steel pipe is relatively large, thereby improving the speed consistency of the two steel pipes during rotation, so as to improve the quality of the two steel pipes after docking.

[0016] 2. An adjustable steel pipe placement mechanism is provided, with a bottom mounting base and a longitudinal mounting base for stable support. Through the cooperation of a horizontal hollow bar with a polygonal cross section, a horizontal telescopic bar, and an internal movable plate, the horizontal spacing of the driven rollers can be precisely adjusted. Then, through the upper curved connecting rod, the tee mounting head, and the driven rollers, a three-point positioning support structure is formed, which can not only firmly limit the steel pipe and prevent displacement, but also allow the driven rollers to rotate synchronously with the steel pipe to reduce friction. At the same time, the whole structure can flexibly adapt to steel pipes of different diameters, making installation and adjustment convenient, and the structure stable and reliable, providing a high-precision support foundation for steel pipe docking.

[0017] 3. Powered by a dual-axis motor, and featuring a longitudinal hollow column, piston plate, helical spring, and hydraulic fluid pre-reserved cavity structure, the piston plate can be hydraulically controlled to move up and down, flexibly adjusting the track tension and downward pressure on the steel pipe. Combined with the polygonal cross-section longitudinal telescopic rod and the perforated anti-rotation design of the second rod body, stable drive without deviation is ensured. At the same time, the track and steel pipe surface contact drive significantly increases friction and avoids slippage, allowing the two steel pipes to rotate synchronously at the same speed. This not only improves the operational stability during welding but also adapts to the pressure adjustment requirements of different pipe diameters. The structure has strong controllability and high drive precision. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 This is a three-dimensional cross-sectional view of the present invention; Figure 3 This is a perspective view of the adjustable steel pipe placement mechanism in this invention; Figure 4 This is a three-dimensional cross-sectional view of the horizontal hollow rod in this invention; Figure 5 This is a perspective view of the pressure-regulating drive mechanism in this invention; Figure 6 This is a three-dimensional cross-sectional view of the pressure-regulating drive mechanism in this invention; Figure 7 This is a perspective view of the distance adjustment mechanism in this invention; Figure 8 This is a three-dimensional cross-sectional view of the distance adjustment mechanism in this invention.

[0019] The components include: 1. Adjustable steel pipe placement mechanism; 11. Bottom mounting base; 12. Longitudinal mounting base; 13. Horizontal hollow rod; 14. Horizontal telescopic rod; 15. Horizontal component movable cavity; 16. Built-in movable plate; 17. No. 1 rod body through hole; 18. Lower connecting rod; 19. T-joint mounting head; 110. Driven shaft; 111. Driven roller; 112. Upper curved connecting rod; 113. Opposing fixed plate; 2. Pressure regulating drive mechanism; 21. Longitudinal hollow column; 22. Placement base; 23. Longitudinal component movable cavity; 24. Liquid reserved cavity; 25. No. 2 rod body through hole; 26. Liquid docking channel; 27. Piston plate; 28. Helical spring; 29. ​​Longitudinal telescopic rod; 210. Motor fixing sleeve; 211. Dual-axis motor; 212. Drive pulley; 213. Track; 3. Distance adjustment mechanism; 31. Longitudinal threaded sleeve; 32. No. 1 internal threaded cavity; 33. No. 2 internal threaded cavity; 34. No. 1 thread structure; 35. No. 2 thread structure; 36. No. 1 external threaded rod; 37. No. 2 external threaded rod; 38. No. 1 connecting plate; 39. No. 2 connecting plate; 310. Polygonal limiting cavity; 311. Polygonal limiting rod; 4. Welding machine. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1 and Figure 2 A steel structure docking device for steel structure construction includes a welding machine 4 with controllable welding position. First, the welding machine 4 needs to be fixedly installed on the central symmetrical line of two adjustable steel pipe placement mechanisms 1. Then, the bottom mounting base 11 is fixedly installed on the ground or working surface. Next, the placement base 22 is installed in the corresponding area. Finally, the liquid docking channel 26 is docked with a hydraulic device that can control the direction and pressure of liquid flow.

[0022] To achieve a driven limit on the steel pipe, please refer to [link / reference needed]. Figure 1 , Figure 2 , Figure 3 and Figure 4Two adjustable steel pipe placement mechanisms 1 are required. These mechanisms include two symmetrical driven rollers 111 for placing the steel pipes, an upper curved connecting rod 112 that adjusts the horizontal distance between the driven rollers 111, and a horizontal hollow rod 13 that limits the horizontal movement of the driven rollers 111. Relying on the movable cooperation structure between the horizontal hollow rod 13 and the horizontal telescopic rod 14, the two sets of upper curved connecting rods 112 can be flexibly driven to move closer together or further apart. Based on the actual diameter of the steel pipe during construction, the horizontal distance between the two sets of upper curved connecting rods 112 can be precisely adjusted until the driven rollers 111 on both sides form a stable and reliable limiting support, ensuring that the steel pipe does not experience radial offset or swaying after placement. When the steel pipe rotates with the driving mechanism, the driven rollers 111 can rotate freely synchronously, reducing the rotational resistance of the steel pipe in a driven following manner while continuously maintaining the limiting constraint effect, ultimately achieving efficient, stable, and low-resistance driven positioning support for the steel pipe.

[0023] For details regarding the structure of the adjustable steel pipe placement mechanism 1, please refer to [link / reference]. Figure 3 and Figure 4 The mechanism is equipped with a bottom mounting base 11 that can be stably installed on the construction work surface. Two sets of horizontal hollow rods 13 are symmetrically fixed to the upper surface of the base via longitudinal mounting bases 12. A horizontal component movable cavity 15 is opened inside the horizontal hollow rod 13, and each end of the rod has a first rod through hole 17 connecting the outside to the two ends of the movable cavity. Two sets of built-in movable plates 16 that can move freely along the axial direction are installed inside the horizontal component movable cavity 15. The ends of the movable plates are fixedly connected to horizontal telescopic rods 14 and pass through the first rod through holes 17. A lower connecting rod 18 is installed at the outer end of each horizontal telescopic rod 14. A three-way mounting head 19 is fixed to the top of the lower connecting rod 18. A freely rotatable driven shaft 110 is mounted on the relatively rotating end of the three-way mounting head 19 via bearings. A driven roller 111 that rotates synchronously with the driven shaft 110 is fixedly installed on the driven shaft 110. Upper curved connecting rods 112 are fixed to the top of the two symmetrical three-way mounting heads 19, and opposing fixing plates 113 are provided in the middle sections of the two upper curved connecting rods 112. Among them, the cross-sections of the first rod through hole 17 and the horizontal telescopic rod 14 are both polygonal structures. The two have the same shape and matched size, which can effectively limit circumferential rotation and ensure the stability and accuracy of horizontal telescopic movement.

[0024] To achieve a stable driving effect on the circular tube, please refer to... Figure 1 , Figure 2 , Figure 5 and Figure 6A pressure-regulating drive mechanism 2 needs to be set up. Its structure includes a dual-axis motor 211 located at the center of two adjustable steel pipe placement mechanisms 1 and serving as the drive source, a track 213 that enables two steel pipes placed at the center of the driven rollers 111 to rotate, and a piston plate 27 that can change the slack of the track 213. In the initial state, under the elastic reset action of the helical spring 28, the dual-axis motor 211 and the track 213 are lifted upward as a whole, forming an opening space that facilitates loading. At this time, two round pipes to be welded are respectively inserted into the inner side of the two sets of tracks 213, so that the inner ring of the track 213 initially fits against the outer wall of the round pipe. Then, the hydraulic system is operated to allow hydraulic oil to be stably injected into the longitudinal direction through the liquid docking channel 26. Inside the movable cavity 23 of the component, under the controllable hydraulic force, the piston plate 27 moves smoothly downward, synchronously driving the longitudinal telescopic rod 29, the dual-axis motor 211, and the drive pulley 212 to move downward until the track 213 is fully taut and tightly pressed against the surface of the round tube. The hydraulic system can precisely adjust the pressing force of the track 213 on the round tube. After the dual-axis motor 211 is started, its two rotors drive the two round tubes to rotate in the same direction synchronously through the track 213. Since the track and the round tube have a large surface contact, the speed consistency of the driving and driven parts can be significantly improved. At the same time, the downward pressure applied by the track can effectively enhance the anti-interference ability of the round tube during operation, greatly improving the overall operating stability of the equipment and the welding accuracy.

[0025] For details regarding the specific structure of the pressure-regulating drive mechanism 2, please refer to [link / reference]. Figure 5 and Figure 6The mechanism includes a longitudinal hollow column 21, with an integrally formed base plate 22 for stable installation at its bottom. The base plate 22 contains a longitudinal component movable cavity 23, with a liquid pre-reserved cavity 24 at its top. A second rod through-hole 25, for inserting a rod and connecting to the outside, is located at the top of the liquid pre-reserved cavity 24. A piston plate 27, capable of smooth axial movement, is installed inside the longitudinal component movable cavity 23. A pre-compressed helical spring 28 is positioned below the piston plate 27 to provide reliable reset power for the entire mechanism. A longitudinal telescopic rod 29 is fixedly connected to the upper end of the piston plate 27, and this rod passes upward through the liquid pre-reserved cavity 24 and the second rod through-hole 25. A horizontally arranged dual-axis motor 211 is securely mounted on the top of the longitudinal telescopic rod 29 via a motor mounting sleeve 210. Drive pulleys 212 are fixedly mounted on the two output shafts of the motor, and each drive pulley 212 is fitted with a track 213 for driving the steel pipe rotation. The side wall of the longitudinal hollow column 21 also has a liquid docking channel 26 for connecting to an external hydraulic system, enabling pressure regulation of the liquid pre-reserved chamber 24. The cross-sections of the second rod body perforation 25 and the longitudinal telescopic rod 29 both adopt polygonal structures, with precise matching of their shapes and dimensions, effectively limiting circumferential rotation and ensuring the straightness and stability of the telescopic movement. Simultaneously, the helical spring 28 has sufficient restoring force, allowing it to smoothly drive the dual-axis motor 211 and track 213 upwards after pressure relief, facilitating steel pipe loading and replacement.

[0026] To achieve working compatibility with circular pipes of different diameters, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 7 and Figure 8 A distance adjustment mechanism 3 needs to be set up. Its structure includes a first external threaded rod 36 and a second external threaded rod 37 fixedly connected to two opposing fixed plates 113; a longitudinal threaded sleeve 31 capable of changing the distance between the first external threaded rod 36 and the second external threaded rod 37; and a polygonal limiting rod 311 capable of preventing relative rotation between the first external threaded rod 36 and the second external threaded rod 37. The longitudinal threaded sleeve 31 rotates in a specific direction according to the actual diameter of the round tube to be processed. Because its two ends are respectively provided with rotation directions… Conversely, thread structure 34 and thread structure 35, together with the anti-rotation limiting function of the central polygonal limiting rod 311, can drive thread rod 36 and thread rod 37 to make synchronous linear displacements in opposite directions or in opposite directions. This allows for precise control of the distance between the two sets of opposing fixed plates 113, ultimately achieving stepless adjustment of the horizontal distance between the two upper curved connecting rods 112 until the driven rollers 111 on both sides form a stable and reliable three-point limiting support for the round pipe, meeting the positioning and adaptation requirements of steel pipes of different diameters.

[0027] For details regarding the structure of the distance adjustment mechanism 3, please refer to [link / reference]. Figure 7 and Figure 8The core of the mechanism includes a longitudinal threaded sleeve 31, a first external threaded rod 36, and a second external threaded rod 37. The longitudinal threaded sleeve 31 has two concave internal threaded cavities 32 and 33 at its ends. The first external threaded rod 36 is threaded into the first internal threaded cavity 32 via a first thread structure 34, and the second external threaded rod 37 is threaded into the second internal threaded cavity 33 via a second thread structure 35. Both the first and second external threaded rods 36 and 37 have concave polygonal limiting cavities 310 at their opposite ends. A polygonal limiting rod 311 is fixedly installed at the center of the longitudinal threaded sleeve 31 and inserted into the polygonal limiting cavity 310, forming a precise limiting fit. One end of the first external threaded rod 36 is fixedly connected to a one-sided opposing fixed plate 113 via an integrated first connecting plate 38, and one end of the second external threaded rod 37 is fixedly connected to the other-sided opposing fixed plate 113 via an integrated second connecting plate 39. Both the polygonal limiting cavity 310 and the polygonal limiting rod 311 have polygonal cross-sections, and their shapes and sizes match each other, which can effectively prevent the rods from rotating relative to each other. The first thread structure 34 and the second thread structure 35 are respectively composed of the threads of the corresponding internal thread cavity and the external thread rod, and the two have opposite helical directions, ensuring that the thread rods on both sides move synchronously towards or away from each other when the sleeve is rotated, so as to achieve stable adjustment of the spacing.

[0028] In use, the welding machine 4 needs to be fixedly installed on the central symmetrical line of the two adjustable steel pipe placement mechanisms 1, and then the bottom mounting base 11 needs to be fixedly installed on the ground or working surface. Then, the placement base 22 needs to be installed in the corresponding area. Finally, the liquid docking channel 26 is docked with a hydraulic device that can control the direction and pressure of liquid flow. The longitudinal threaded sleeve 31 is rotated in a directional manner. Due to the threaded connection and the opposite threaded structure, and under the action of the polygonal limit rod 311, the distance between the first external thread rod 36 and the second external thread rod 37 will change, thereby controlling the distance between the two opposing fixed plates 113, and then adjusting the horizontal distance between the two upper curved connecting rods 112 until the two sets of driven rollers 111 can produce a limiting support effect on the round tube. In the initial state, under the action of the helical spring 28 When the dual-axis motor 211 and track 213 move upward, the two round pipes to be welded are respectively passed through the two tracks 213, so that the inner circumference of the track 213 abuts against the outer circumference of the round pipe. Then, the hydraulic equipment is controlled so that hydraulic oil enters the longitudinal component moving chamber 23 through the liquid docking channel 26. Under the liquid pressure, the piston plate 27 moves downward. At this time, the dual-axis motor 211 and drive pulley 212 move downward until the inner circumference of the track 213 abuts against the outer circumference of the round pipe, and the track 213 is in a taut state. The pressure of the track 213 on the round pipe can be controlled by the hydraulic equipment. The dual-axis motor 211 is started, and its two rotors will drive the two round pipes to rotate synchronously and in the same direction through the track 213. The rotation speed of the round pipe is controlled, and then the welding machine 4 is turned on to weld the weld.

[0029] 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 structure butt welding device for steel structure construction, comprising a welding machine (4) with controllable welding position, characterized in that: It also includes, Two adjustable steel pipe placement mechanisms (1) are provided, the structure of which includes two symmetrical driven rollers (111) for placing steel pipes, an upper curved connecting rod (112) that can adjust the horizontal distance of the driven rollers (111), and a horizontal hollow rod (13) that can limit the movement of the driven rollers (111) in the horizontal direction. And a pressure-regulating drive mechanism (2), the structure of which includes a dual-axis motor (211) located at the center of two adjustable steel pipe placement mechanisms (1) and serving as a drive source, a track (213) that enables two steel pipes placed at the center of driven rollers (111) to rotate, and a piston plate (27) that can change the slack of the track (213).

2. The steel structure docking device for steel structure construction according to claim 1, characterized in that: The adjustable steel pipe placement mechanism (1) also includes a bottom mounting base (11) that can be installed on the working surface. Two symmetrical horizontal hollow rods (13) are fixedly installed on the upper surface of the bottom mounting base (11) through a longitudinal mounting base (12). The horizontal hollow rods (13) are provided with a horizontal component movable cavity (15). The two ends of the horizontal hollow rods (13) are provided with a first rod body through hole (17) connecting the external space and the two ends of the horizontal component movable cavity (15). The horizontal component movable cavity (15) is provided with two built-in movable plates (16) that can move along its axial direction. The ends of the built-in movable plates (16) are fixedly installed with a through rod body. A horizontal telescopic rod (14) with a perforation (17) is provided. A lower connecting rod (18) is fixedly installed at the end of each horizontal telescopic rod (14). A three-way mounting head (19) is fixedly installed at the top of each lower connecting rod (18). A rotatable driven shaft (110) is installed at the opposite rotating end of each three-way mounting head (19) through a bearing. A driven roller (111) that rotates with the shaft of each driven shaft (110) is fixedly installed on the shaft body. An upper curved connecting rod (112) is fixedly installed at the top of each of the two symmetrical three-way mounting heads (19). An opposing fixed plate (113) is provided in the middle of each of the two upper curved connecting rods (112).

3. A steel structure connection device for steel structure construction according to claim 2, characterized in that: The cross-sectional shape of the perforation (17) of the first rod is consistent with the cross-sectional shape of the horizontal telescopic rod (14), both being polygonal structures, and the structural dimensions of the cross-sectional shape of the perforation (17) of the first rod are matched with the structural dimensions of the cross-sectional shape of the horizontal telescopic rod (14).

4. A steel structure connection device for steel structure construction according to claim 3, characterized in that: The pressure-regulating drive mechanism (2) further includes a longitudinal hollow column (21). A placement base plate (22) integrally formed with the bottom of the longitudinal hollow column (21) is provided. A longitudinal component movable cavity (23) is provided inside the placement base plate (22). A liquid pre-reserved cavity (24) is provided at the top of the longitudinal component movable cavity (23). A second rod through-hole (25) connecting to the external space is provided at the top of the liquid pre-reserved cavity (24). A piston plate (27) capable of moving along its axial direction is provided inside the longitudinal component movable cavity (23). A compressed helical spring (28) is placed at the bottom of the piston plate (27). The piston plate (27) is fixedly mounted with a longitudinal telescopic rod (29) that passes through the liquid reserved cavity (24) and the second rod body through hole (25). The top of the longitudinal telescopic rod (29) is fixedly mounted with a motor fixing sleeve (210). A horizontal dual-axis motor (211) is fixedly mounted in the center of the motor fixing sleeve (210). A drive pulley (212) is fixedly mounted on each of the two rotor ends of the dual-axis motor (211). A track (213) is fitted in each drive pulley (212). A liquid docking channel (26) that connects to the liquid reserved cavity (24) is provided on the circumferential side of the longitudinal hollow column (21).

5. A steel structure connection device for steel structure construction according to claim 4, characterized in that: The cross-sectional shape of the perforation (25) of the second rod is consistent with the cross-sectional shape of the longitudinal telescopic rod (29), both being polygonal structures, and the structural dimensions of the cross-sectional shape of the perforation (25) of the second rod are matched with the structural dimensions of the cross-sectional shape of the longitudinal telescopic rod (29).

6. A steel structure connection device for steel structure construction according to claim 5, characterized in that: The elastic strength of the helical spring (28) in its initial state is sufficient to drive the dual-axis motor (211) and the track (213) to return to their original position.

7. A steel structure connection device for steel structure construction according to any one of claims 2-6, characterized in that: It also includes a distance adjustment mechanism (3), the structure of which includes a first external thread rod (36) and a second external thread rod (37) fixedly connected to two opposing fixed plates (113), a longitudinal threaded sleeve (31) capable of changing the distance between the first external thread rod (36) and the second external thread rod (37), and a polygonal limiting rod (311) capable of preventing relative rotation between the first external thread rod (36) and the second external thread rod (37).

8. A steel structure connection device for steel structure construction according to claim 7, characterized in that: The distance adjustment mechanism (3) further includes a longitudinal threaded sleeve (31), a first external threaded rod (36), and a second external threaded rod (37). One end of the longitudinal threaded sleeve (31) is provided with a first internal threaded cavity (32) with a concave structure, and the other end of the longitudinal threaded sleeve (31) is provided with a second internal threaded cavity (33) with a concave structure. The rod body of the first external threaded rod (36) is installed inside the first internal threaded cavity (32) through a first threaded structure (34), and the rod body of the second external threaded rod (37) is installed inside the second internal threaded cavity (33) through a second threaded structure (35). The first external thread rod (36) and the second external thread rod (37) are provided with a concave polygonal limiting cavity (310) at their opposite ends. A polygonal limiting rod (311) inserted into the polygonal limiting cavity (310) is fixedly installed at the center of the longitudinal threaded sleeve (31). One end of the first external thread rod (36) is provided with a first connecting plate (38) that is integral with it and fixedly connected to one of the opposite fixed plates (113). One end of the second external thread rod (37) is provided with a second connecting plate (39) that is integral with it and fixedly connected to the other opposite fixed plate (113).

9. A steel structure connection device for steel structure construction according to claim 8, characterized in that: The cross-sectional shape of the polygonal limiting cavity (310) is consistent with the cross-sectional shape of the polygonal limiting rod (311), both being polygonal structures, and the structural dimensions of the cross-section of the polygonal limiting cavity (310) match the structural dimensions of the cross-section of the polygonal limiting rod (311).

10. A steel structure connection device for steel structure construction according to claim 9, characterized in that: The first thread structure (34) includes an internal thread structure disposed inside the first internal thread cavity (32) and an external thread structure disposed on the first external thread rod (36). The second thread structure (35) includes an internal thread structure disposed inside the second internal thread cavity (33) and an external thread structure disposed on the second external thread rod (37). The helical direction of the first thread structure (34) is opposite to the helical direction of the second thread structure (35).

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