Steel structure butt welding device

Abstract

The present invention relates to the technical field of pressurized butt welding, and specifically to a steel structure butt welding device. The present invention includes a support frame, two horizontally movable carrier plates are arranged above the support frame, and a rotary pushing mechanism with a parallelogram design is arranged above the carrier plate. The rotary pushing mechanism includes a top plate, and the bottom of the top plate is rotatably connected to two parallel movable rods, the bottom of the movable rod is rotatably connected to the bottom plate, and the bottom of the bottom plate is fixedly connected to a first pressure block and a second pressure block. The present invention drives the first pressure block and the second pressure block to move by adopting a rotary pushing mechanism with a parallelogram design, so that the first pressure block can drive the pushing and tightening components to move in a rotating manner at the same height, and during the rotation process, the movable block continues to push the channel steel through friction until the two channel steels are pushed completely against each other, eliminating the gap between the two channel steels caused by the reaction force.

Description

Technical Field

[0001] The present invention relates to the field of metal welding equipment, in particular to the technical field of pressurized butt welding, and specifically to a steel structure butt welding device. Background Art

[0002] The unique U-shaped cross-section groove of the channel steel can form a natural cable / pipeline channel. In the construction of student dormitory buildings, channel steel can be installed on the top of the dormitory corridor to assist in the installation of natural cables / pipes, and facilitate the subsequent maintenance of cables and pipes.

[0003] In order to facilitate the transportation of channel steel, channel steel is generally transported in multiple sections, and the length of each section of channel steel is generally not more than 2m. For the installation of channel steel, when using it, it is necessary to weld the segmented channel steel together. Common steel structure welding methods include butt welding, such as a steel structure column butt welding device proposed in patent application number "CN202320838488.X". The steel structure is pushed together by a heating element, and then the steel structure is clamped for butt welding.

[0004] However, in the existing technology, when the two channel steels are pushed together, they will separate slightly due to the reaction force when they come into contact with each other, resulting in a butt joint gap between the two channel steels. The gap causes insufficient filling of the molten metal, which draws in air or impurities, forming pores or slag inclusions, thereby affecting the welding strength of the channel steel structure. Summary of the Invention

[0005] The purpose of the present invention is to provide a steel structure butt welding device to solve the problems raised in the above background technology.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A steel structure butt welding device includes a support frame, two horizontally movable carrier plates are provided above the support frame, a rotary pushing mechanism with a parallelogram design is provided above the carrier plates, the rotary pushing mechanism includes a top plate, the bottom of the top plate is rotatably connected to two parallel movable rods, the bottom of the movable rods is rotatably connected to the bottom plate, and the bottom of the bottom plate is fixedly connected to a first pressure block and a second pressure block;

[0008] The first pressure block is provided with a pushing and tightening assembly, which includes a pressure spring fixed to the top of the inner wall of the first pressure block, the bottom of the pressure spring is fixedly connected to a connecting rod, the bottom of the connecting rod is connected to a movable block, the bottom of the movable block passes through the first pressure block and extends to the outside of the first pressure block, both sides of the connecting rod are rotatably connected to a linkage rod, one end of the linkage rod is rotatably connected to a transverse plate, one end of the transverse plate passes through the first pressure block and is fixedly connected to the pressure-resistant plate.

[0009] Preferably, the support frame is provided with two movable cavities, a guide rod is fixedly connected in the movable cavity, a sliding block is slidably connected to the guide rod, the carrier plate is fixed on the top of the sliding block, a hydraulic cylinder is installed in the movable cavity, the telescopic end of the hydraulic cylinder is fixedly connected to the sliding block, and is used to drive the sliding block and the carrier plate to move horizontally.

[0010] Preferably, the top of the carrier plate is fixedly connected to two symmetrically arranged telescopic cylinders, and the telescopic ends of the telescopic cylinders are fixedly connected to a clamping plate.

[0011] Preferably, the top of the carrier plate is fixedly connected to two inclined supporting brackets, the top of the supporting brackets is fixedly connected to the top plate, a pushing cylinder is rotatably connected to the top plate, and the telescopic end of the pushing cylinder is rotatably connected to one of the movable rods.

[0012] Preferably, a connecting pipe is fixedly connected to the interior of the second pressure block, and a suction cup is fixedly connected to the bottom of the connecting pipe.

[0013] Preferably, the top of the inner wall of the first pressure block is fixedly connected to a vertical tube, the pressure spring is sleeved on the outer surface of the vertical tube, the top of the connecting rod is fixedly connected to a round rod, and the top of the round rod and the inside of the vertical tube are fixedly connected to the first piston.

[0014] Preferably, a transverse air passage is provided inside the bottom plate, and the vertical pipes and the connecting pipes are both connected to the transverse air passage.

[0015] Preferably, a first regulating plug and a second regulating plug are provided in the transverse air passage, and a transverse connecting shaft is fixedly connected between the first regulating plug and the second regulating plug.

[0016] Preferably, a porous plate is fixedly connected in the connecting tube, a return spring is fixedly connected to the top of the porous plate, a second piston is fixedly connected to the top of the return spring, a guide wheel is fixedly connected to the top of the vertical tube, a connecting rope is fixedly connected to the second piston, the connecting rope passes through the guide wheel and is fixedly connected to the second adjusting plug.

[0017] Preferably, an electrically controlled gas valve is fixedly installed on the vertical pipe and inside the second pressure block.

[0018] Beneficial effects of the present invention:

[0019] 1. The present invention drives the first pressure block and the second pressure block to move by adopting a parallelogram-designed rotational pushing mechanism, so that the first pressure block can drive the pushing and tightening components to move in a rotating manner at the same height, and during the rotation process, the movable block continues to push the channel steel by friction until the two channel steels are pushed completely together, eliminating the gap between the two channel steels caused by the reaction force, and after the movable block moves up to the inside of the first pressure block, the bottom of the first pressure block presses the channel steel, and cooperates with the suction cup at the bottom of the second pressure block to adsorb the channel steel, and jointly tightens the channel steel, avoiding the generation of gaps in the channel steel due to the reaction force after the docking and collision.

[0020] 2. When the present invention pushes the channel steel and moves it upward through the movable block, the linkage rod is used to push the transverse plate and the pressure plate, so that the pressure plate is pressed against the inner wall of the channel steel groove. While tightening the channel steel, it can also improve the pressure resistance of the channel steel side wall, so that the telescopic cylinder can apply a stronger clamping force to the channel steel through the clamping plate. On the one hand, it improves the stability of the channel steel and better applies pressure. On the other hand, it can avoid the channel steel from being deformed due to insufficient pressure resistance due to the inner groove and excessive pressure during clamping.

[0021] 3. When the present invention pushes the channel steel and moves upward through the movable block, the connecting rod is used to drive the first piston to move upward, so that air can be pressed into the horizontal airway, and the first regulating plug and the second regulating plug are pushed by the air pressure. The second regulating plug drives the second piston to move upward through the connecting rope, extracting the gas from the connecting pipe and the inside of the suction cup, reducing the air pressure inside the suction cup, and improving the adsorption strength of the suction cup. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a structural schematic diagram of the support frame and carrier plate proposed in the present invention;

[0025] Figure 3 This invention Figure 2 a cross-sectional view of a top view of the middle support frame;

[0026] Figure 4 It is a structural schematic diagram of the rotary pushing mechanism proposed by the present invention;

[0027] Figure 5 This invention Figure 4Schematic diagram of the pushing state of the middle rotating pushing mechanism;

[0028] Figure 6 This invention Figure 4 Schematic diagram of the tightening state of the middle rotating pushing mechanism;

[0029] Figure 7 This invention Figure 6 A sectional view of a side view of the first pressing block;

[0030] Figure 8 This invention Figure 6 A sectional view of a side portion of the second pressing block;

[0031] Figure 9 This invention Figure 6 A schematic diagram of the connection between the first pressing block and the second pressing block;

[0032] Figure 10 This invention Figure 9 Enlarged view of point A in the middle.

[0033] The reference numerals in the figures are as follows:

[0034] 1. Support frame; 101. Heating element; 2. Carrier plate; 201. Channel steel; 3. Rotational pushing mechanism; 301. Top plate; 302. Movable rod; 303. Bottom plate; 4. First pressure block; 401. Guide plate; 402. Guide sleeve; 5. Second pressure block; 6. Pushing and tightening assembly; 601. Pressure spring; 602. Connecting rod; 603. Movable block; 604. Linking rod; 605. Transverse plate; 606. Pressure plate; 7. Guide Rod; 8. Sliding block; 9. Hydraulic cylinder; 10. Telescopic cylinder; 11. Clamping plate; 12. Support bracket; 13. Push cylinder; 14. Connecting pipe; 15. Suction cup; 16. Vertical pipe; 17. First piston; 18. Horizontal air channel; 19. First regulating plug; 20. Second regulating plug; 21. Horizontal connecting shaft; 22. Perforated plate; 221. Return spring; 23. Second piston; 24. Guide wheel; 25. Connecting rope; 26. Electric air valve. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] like Figure 1-7, a steel structure butt welding device, includes a support frame 1, a heating element 101 is provided on the top of the support frame 1, two horizontally movable carrier plates 2 are provided above the support frame 1, and a channel steel 201 to be welded is placed on the carrier plate 2, and the heating element 101 is a resistance heating device in the prior art, whose shape is adapted to the design of the channel steel 201, and the opposite ends of the two channel steels 201 are fitted into the heating element 101, which can play the role of butt welding the channel steel 201, and a rotary pushing mechanism 3 with a parallelogram design is provided above the carrier plate 2, and the rotary pushing mechanism 3 includes a top plate 301, and the bottom of the top plate 301 is rotatably connected to two parallel movable rods 302, and the bottom of the movable rod 302 is rotatably connected to the bottom of the bottom plate 303, and the bottom of the bottom plate 303 is fixedly connected to the first pressure block 4 and the second pressure block 5.

[0037] like Figure 1-7 The first pressure block 4 is provided with a pushing and tightening assembly 6, which includes a pressure spring 601 fixed to the top of the inner wall of the first pressure block 4, and the bottom of the pressure spring 601 is fixedly connected to a connecting rod 602, and the bottom of the connecting rod 602 is connected to a movable block 603. The bottom of the movable block 603 passes through the first pressure block 4 and extends to the outside of the first pressure block 4. The pressure spring 601 exerts downward pressure on the connecting rod 602 and the movable block 603. The first pressure block 4 and the second pressure block 5 are both located above the groove of the channel steel 201. When the rotational pushing mechanism 3 drives the first pressure block 4 and the second pressure block 5 to move, the first pressure block 4 and the second pressure block 5 can be made to move into the groove of the channel steel 201.

[0038] like Figure 1-7 , both sides of the connecting rod 602 are rotatably connected with the linkage rod 604, one end of the linkage rod 604 is rotatably connected with the transverse plate 605, one end of the transverse plate 605 passes through the first pressure block 4 and is fixedly connected with the pressure-resistant plate 606, the first pressure block 4 is fixedly connected with the guide plate 401, and the linkage rod 604 is fixedly connected with the guide sleeve 402, the guide sleeve 402 and the guide plate 401 are slidably connected, which can ensure the horizontal movement of the transverse plate 605 and the pressure-resistant plate 606. When the movable block 603 moves up to the inside of the first pressure block 4, the pressure-resistant plate 606 can fit exactly against the inner wall of the groove of the channel steel 201.

[0039] like Figure 1 、 Figure 2 and Figure 3The support frame 1 has two movable cavities, and a guide rod 7 is fixedly connected to the movable cavity. A sliding block 8 is slidably connected to the guide rod 7. The carrier plate 2 is fixed to the top of the sliding block 8, and is guided by the guide rod 7 to ensure the horizontal movement of the sliding block 8 and the carrier plate 2. The carrier plate 2 drives the horizontal movement of the channel steel 201. A hydraulic cylinder 9 is installed in the movable cavity. The telescopic end of the hydraulic cylinder 9 is fixedly connected to the sliding block 8, which is used to drive the sliding block 8 and the carrier plate 2 to move horizontally. The two movable cavities are symmetrically arranged, so that the two horizontal carrier plates 2 can drive the two channel steels 201 to move relative to each other.

[0040] like Figure 2 The top of the carrier plate 2 is fixedly connected to two symmetrically arranged telescopic cylinders 10, and the telescopic ends of the telescopic cylinders 10 are fixedly connected to clamping plates 11. The telescopic cylinders 10 and the clamping plates 11 are located on both sides of the channel steel 201 and can clamp the channel steel 201.

[0041] like Figure 1 、 Figure 2 and Figure 4 The top of the carrier plate 2 is fixedly connected to two inclined support brackets 12, and the top of the support bracket 12 is fixedly connected to the top plate 301, so that the top plate 301 is fixed relative to the carrier plate 2 and can move together with the carrier plate 2. A pushing cylinder 13 is rotatably connected to the top plate 301, and the telescopic end of the pushing cylinder 13 is rotatably connected to one of the movable rods 302.

[0042] The pushing cylinder 13, the telescopic cylinder 10 and the hydraulic cylinder 9 are all equipped with a power source, and the setting of the power source is a conventional setting in the field, and can be completed by technicians according to existing technologies.

[0043] like Figure 1 、 Figure 2 、 Figure 4 and Figure 8 The second pressure block 5 is fixedly connected to a connecting pipe 14, and the bottom of the connecting pipe 14 is fixedly connected to a suction cup 15. The bottom of the second pressure block 5 is concave, and the suction cup 15 is located in the concave, with the bottom protruding outside the second pressure block 5.

[0044] like Figure 6-10 The top of the inner wall of the first pressure block 4 is fixedly connected to the vertical tube 16, the pressure spring 601 is sleeved on the outer surface of the vertical tube 16, the top of the connecting rod 602 is fixedly connected to the round rod, and the top of the round rod and the inside of the vertical tube 16 are fixedly connected to the first piston 17, which fits the vertical tube 16 and plays a role in blocking gas.

[0045] like Figure 6-10 A transverse air passage 18 is provided inside the bottom plate 303 , and the vertical pipe 16 and the connecting pipe 14 are both connected to the transverse air passage 18 .

[0046] like Figure 6-10 A first regulating plug 19 and a second regulating plug 20 are provided in the transverse air passage 18. The first regulating plug 19 and the second regulating plug 20 are just adapted to the transverse air passage 18 and can play the role of blocking air. A transverse connecting shaft 21 is fixedly connected between the first regulating plug 19 and the second regulating plug 20, so that the first regulating plug 19 and the second regulating plug 20 can move together.

[0047] like Figure 6-10 A porous plate 22 is fixedly connected to the connecting pipe 14, and a plurality of air holes are provided on the porous plate 22, so that the gas above and below the porous plate 22 in the connecting pipe 14 can flow to each other. A return spring 221 is fixedly connected to the top of the porous plate 22, and a second piston 23 is fixedly connected to the top of the return spring 221. A guide wheel 24 is fixedly connected to the top of the vertical tube 16, and a connecting rope 25 is fixedly connected to the second piston 23. The connecting rope 25 passes through the guide wheel 24 and is fixedly connected to the second regulating plug 20. The guide wheel 24 can reduce the friction generated when the connecting rope 25 moves, thereby reducing the wear of the connecting rope 25.

[0048] like Figure 6-10 An electrically controlled gas valve 26 is fixedly installed on the vertical pipe 16 and inside the second pressure block 5. The electrically controlled gas valve 26 has a built-in power supply and can be controlled by an external switch.

[0049] The working principle of a steel structure butt welding device provided by the present invention is as follows:

[0050] When two channel steels 201 are docked together manually or by an external mechanical structure, when the two channel steels 201 come into contact with each other, the two channel steels 201 will be slightly separated by the reaction force, resulting in a docking gap between the two channel steels 201.

[0051] Through the upper parallelogram-shaped rotary pushing mechanism 3, the pushing cylinder 13 extends to push the movable rod 302, driving the bottom plate 303 to move, and the bottom plate 303 drives the first pressure block 4 and the second pressure block 5 to move. (By utilizing the parallelogram angle change, the two sides always remain parallel, and the first pressure block 4 and the second pressure block 5 always remain at the same height);

[0052] like Figure 1 and Figure 4 In the initial state, the first pressure block 4 and the movable block 603 are not in contact with the channel steel 201, which facilitates the installation of the channel steel 201 or its removal after welding;

[0053] like Figure 5 , ( Figure 5In the middle, the bottom of the movable block 603 just contacts the channel steel 201. During the movement of the first pressure block 4, the first pressure block 4 moves in a manner that rotates with the movable rod 302. The movable block 603 contacts the channel steel 201, generating rightward and downward components. As the first pressure block 4 moves rightward, it will continue to push the channel steel 201 through friction until the two channel steels 201 are pushed completely against each other, eliminating the gap between the two channel steels 201 caused by the reaction force.

[0054] like Figure 6 , ( Figure 6 (In the figure, the movable block 603 has shrunk to contact the channel steel 201). After the first pressure block 4 completes its movement, the downward force of the movable block 603 causes the movable block 603 to elastically contract upward, and the movable block 603 moves up to the inside of the first pressure block 4. The bottom of the first pressure block 4 presses against the channel steel 201, pressing and securing the channel steel 201.

[0055] At the same time, by utilizing the angle change of the parallelogram and the characteristic that the two sides always remain parallel, the bottom of the first pressure block 4 and the bottom of the movable block 603 can both remain flat. Regardless of whether the movable block 603 or the first pressure block 4 is in contact with the channel steel 201, the bottom can always be completely in contact with the channel steel 201, thereby increasing the friction between the movable block 603, the first pressure block 4 and the channel steel 201, and can better push and position the channel steel 201.

[0056] like Figure 2 、 Figure 4 and Figure 7 , the movable block 603 squeezes the connecting rod 602 and the pressure spring 601 upward, causing the pressure spring 601 to contract, and the movable block 603 moves up to the inside of the first pressure block 4. Through the upward movement of the connecting rod 602, the linkage rod 604 is squeezed, and the linkage rod 604 pushes the horizontal plate 605 and the pressure plate 606. The pressure plate 606 supports the inner wall of the channel steel 201. Above the carrier plate 2, there are clamping plates 11 that can move toward each other on both sides of the channel steel 201. The pressure plate 606 is used to press against the inner side of the channel steel 201 to improve the pressure resistance of the channel steel 201, so that the clamping plate 11 can apply a greater clamping force when clamping, thereby improving the stability of the channel steel 201 and avoiding loosening caused by applying pressure during welding (the channel steel 201 has insufficient pressure resistance due to the inner groove). At the same time, it avoids excessive clamping pressure, which causes the channel steel 201 to be deformed due to clamping.

[0057] like Figure 4 and Figure 8By utilizing the characteristic that the angle of the parallelogram changes and the two sides always remain parallel, the first pressure block 4 and the second pressure block 5 are always maintained at the same height, so that when the movable block 603 contacts the channel steel 201 and moves upward, the bottom of the suction cup 15 begins to contact the channel steel 201, and the suction cup 15 moves downward with the second pressure block 5 and absorbs the channel steel 201, thereby improving the stability and balance of the channel steel 201 and preventing the butt joint end of the channel steel 201 from causing a small movement due to its own toughness, which affects the butt joint accuracy of the two channel steels 201.

[0058] like Figure 7 、 Figure 8 、 Figure 9 and Figure 10 When the movable block 603 squeezes the channel steel 201 and pushes the channel steel 201, the suction cup 15 at the bottom of the second pressure block 5 also adheres to the surface of the channel steel 201. As the movable block 603 is subjected to the reaction force of the channel steel 201, it continues to elastically shrink upward and drives the first piston 17 to move upward through the connecting rod 602. The upward movement of the first piston 17 can push the gas inside the vertical tube 16 where the first piston 17 is located, increasing the air pressure inside the horizontal air channel 18. The increase in the air pressure inside the horizontal air channel 18 will push the first regulating plug 19. The first regulating plug 19 pushes the second regulating plug 20 through the horizontal connecting shaft 21. The second regulating plug 20 pulls the second piston 23 upward through the connecting rope 25, and the second piston 23 extracts the gas inside the connecting pipe 14 and the suction cup 15, reducing the air pressure inside the suction cup 15. At this time, the suction cup 15 can better adsorb the channel steel 201, thereby enhancing the adsorption force of the suction cup 15. After the movable block 603 shrinks into the first pressure block 4, it cooperates with the first pressure block 4 to press the channel steel 201, so that two positioning points can be formed above the channel steel 201, thereby improving the ability of the channel steel 201 to resist the reaction force, and providing more reliable positioning after the movable block 603 pushes the channel steel 201 to eliminate the gap between the channel steels 201.

[0059] like Figure 1 、 Figure 2 and Figure 7 The clamping plate 11 squeezes and fixes the channel steel 201, and then the carrier plate 2 drives the clamping plate 11 and the channel steel 201 to move, pressurizing the channel steel 201. The opposite ends of the two channel steels 201 fit into the heating element 101, which can achieve the effect of butt welding of the channel steels 201.

[0060] On the contrary, after the two channel steels 201 are welded, the clamping plates 11 on both sides are separated, and then the electric control air valve 26 is opened first to balance the air pressure inside and outside the suction cup 15, and the pushing cylinder 13 contracts, pulling the movable rod 302 in the rotary pushing mechanism 3, and the bottom plate 303 drives the first pressure block 4 and the second pressure block 5 to move in a rotational manner, generating an upward and leftward component force. As the first pressure block 4 moves upward, the spring extends and pushes the connecting rod 602 downward, and the connecting rod 602 drives the movable block 603 to move downward, and at the same time pulls the linkage rod 604, and the linkage rod 604 pulls the anti-pressure plate 606, and the anti-pressure plate 606 is separated from the inner wall of the channel steel 201, and the first pressure block 4 can be separated from the channel steel 201 upward.

[0061] The downward movement of the connecting rod 602 will drive the first piston 17 to move downward. The downward movement of the first piston 17 will absorb the gas inside the transverse airway 18. The air pressure inside the transverse airway 18 will decrease, and the tension spring will contract to pull the second regulating plug 20 through the connecting rope 25. The first regulating plug 19 and the second regulating plug 20 will be reset accordingly. At the same time, the rotational pushing mechanism 3 will drive the second pressure block 5 and the channel steel 201 to separate. At this time, the welded channel steel 201 can be removed.

[0062] Compared with the related art, the steel structure butt welding device provided by the present invention has the following beneficial effects:

[0063] 1. The present invention drives the first pressure block 4 and the second pressure block 5 to move by adopting a parallelogram-designed rotational pushing mechanism 3, so that the first pressure block 4 can drive the pushing and tightening assembly 6 to move in a rotational manner at the same height, and during the rotation process, the movable block 603 continues to push the channel steel 201 by friction until the two channel steels 201 are pushed completely together, eliminating the gap between the two channel steels 201 due to the reaction force, and after the movable block 603 moves up to the inside of the first pressure block 4, the bottom of the first pressure block 4 presses the channel steel 201, and cooperates with the suction cup 15 at the bottom of the second pressure block 5 to adsorb the channel steel 201, and jointly tightens the channel steel 201, avoiding the generation of gaps in the channel steel 201 due to the reaction force after the docking and collision.

[0064] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A steel structure butt welding device, comprising a support frame (1), two horizontally movable carrier plates (2) are arranged above the support frame (1), characterized in that: A rotary pushing mechanism (3) with a parallelogram design is provided above the carrier plate (2), the rotary pushing mechanism (3) comprising a top plate (301), the bottom of the top plate (301) being rotatably connected to two parallel movable rods (302), the bottom of the movable rods (302) being rotatably connected to a bottom plate (303), and the bottom of the bottom plate (303) being fixedly connected to a first pressure block (4) and a second pressure block (5); The first pressure block (4) is provided with a pushing and tightening assembly (6), which includes a pressure spring (601) fixed to the top of the inner wall of the first pressure block (4), the bottom of the pressure spring (601) is fixedly connected to a connecting rod (602), the bottom of the connecting rod (602) is connected to a movable block (603), the bottom of the movable block (603) passes through the first pressure block (4) and extends to the outside of the first pressure block (4), both sides of the connecting rod (602) are rotatably connected to a linkage rod (604), one end of the linkage rod (604) is rotatably connected to a transverse plate (605), and one end of the transverse plate (605) passes through the first pressure block (4) and is fixedly connected to a pressure-resistant plate (606).

2. A steel structure butt welding device according to claim 1, characterized in that: The support frame (1) is provided with two movable cavities, wherein a guide rod (7) is fixedly connected in the movable cavity, a sliding block (8) is slidably connected to the guide rod (7), the carrier plate (2) is fixed on the top of the sliding block (8), and a hydraulic cylinder (9) is installed in the movable cavity, wherein the telescopic end of the hydraulic cylinder (9) is fixedly connected to the sliding block (8) for driving the sliding block (8) and the carrier plate (2) to move horizontally.

3. A steel structure butt welding device according to claim 2, characterized in that: Two symmetrically arranged telescopic cylinders (10) are fixedly connected to the top of the carrier plate (2), and the telescopic ends of the telescopic cylinders (10) are fixedly connected to a clamping plate (11).

4. A steel structure butt welding device according to claim 3, characterized in that: The top of the carrier plate (2) is fixedly connected to two inclined support brackets (12), the top of the support brackets (12) is fixedly connected to the top plate (301), a push cylinder (13) is rotatably connected to the top plate (301), and the telescopic end of the push cylinder (13) is rotatably connected to one of the movable rods (302).

5. A steel structure butt welding device according to claim 1, characterized in that: A connecting pipe (14) is fixedly connected to the interior of the second pressure block (5), and a suction cup (15) is fixedly connected to the bottom of the connecting pipe (14).

6. A steel structure butt welding device according to claim 5, characterized in that: The top of the inner wall of the first pressure block (4) is fixedly connected to a vertical tube (16), a pressure spring (601) is sleeved on the outer surface of the vertical tube (16), the top of the connecting rod (602) is fixedly connected to a round rod, and the top of the round rod and located inside the vertical tube (16) is fixedly connected to a first piston (17).

7. A steel structure butt welding device according to claim 6, characterized in that: A transverse air passage (18) is provided inside the bottom plate (303), and the vertical pipe (16) and the connecting pipe (14) are both connected to the transverse air passage (18).

8. A steel structure butt welding device according to claim 7, characterized in that: A first regulating plug (19) and a second regulating plug (20) are provided in the transverse air passage (18), and a transverse connecting shaft (21) is fixedly connected between the first regulating plug (19) and the second regulating plug (20).

9. A steel structure butt welding device according to claim 8, characterized in that: A porous plate (22) is fixedly connected to the communicating tube (14), a return spring (221) is fixedly connected to the top of the porous plate (22), a second piston (23) is fixedly connected to the top of the return spring (221), a guide wheel (24) is fixedly connected to the top of the vertical tube (16), a connecting rope (25) is fixedly connected to the second piston (23), and the connecting rope (25) passes through the guide wheel (24) and is fixedly connected to the second regulating plug (20).

10. A steel structure butt welding device according to claim 6, characterized in that: An electrically controlled gas valve (26) is fixedly installed on the vertical pipe (16) and located inside the second pressure block (5).

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