Welding auxiliary device for assembly type prefabricated steel structure

Abstract

The invention discloses a welding assisting device for an assembly type prefabricated steel structure, and particularly relates to the technical field of welding, the welding assisting device comprises a machine table, clamping plates for clamping a steel beam are fixedly installed at the upper end of the machine table in a rectangular distribution mode, and a welding assisting device attached to the inner wall of the steel beam is arranged in the middle of an inner cavity of a shell; an electric capstan and plasma welding equipment are arranged in the control cabinet, and traction cables distributed in a rectangular shape are arranged on the front side and the rear side of an inner cavity of the shell correspondingly. Precise internal and external clamping of the wing plate is achieved through cooperation of the wing plate positioning structure and the wing plate clamping structure, welding displacement is prevented, the relative position of the wing plate and the main plate is precisely calibrated through cooperation of the positioning driving structure and the cross beam positioning structure, the position precision is guaranteed, and all core structures work cooperatively to improve the welding quality and reduce errors; and meanwhile, the device adapts to H-shaped steel beams of different specifications, the universality of the device is greatly improved, the workpiece surface integrity is effectively protected, and whole-course stable and efficient welding auxiliary operation is achieved.

Description

Technical Field

[0001] This invention relates to the field of welding technology, and in particular to a welding auxiliary device for prefabricated steel structures. Background Technology

[0002] The field of welding technology encompasses various welding processes and auxiliary technologies in the joining of metal materials. Its core content covers related technical aspects such as positioning, fixing, weld protection, and welding posture adjustment during the welding process. It involves key technologies such as pretreatment of the workpiece, precise alignment of the welding area, and auxiliary support during the welding process. It is widely used in metal structure joining scenarios in multiple industries such as steel structure construction, shipbuilding, and machining. Its overall technical system revolves around the reliable joining of metal materials, integrating multidisciplinary technical elements such as mechanical design, materials mechanics, and welding technology, providing basic technical support for the forming of various metal structures.

[0003] One type of welding auxiliary device for prefabricated steel structures refers to auxiliary equipment used in welding operations of prefabricated steel structures. Its technical aspects cover workpiece positioning before welding, workpiece support during the welding process, guidance of the welding trajectory, and assembly and fixing of the auxiliary device itself. It is generally accomplished by means of adjustable positioning fixtures, weld seam guiding mechanisms, support brackets, bolted connections, scale marking components, etc. The positioning fixtures achieve precise alignment of the prefabricated steel structure workpieces, the support brackets achieve stable load-bearing during the welding process, the guiding mechanism guides the welding operation trajectory, the bolted connections achieve assembly and fixing of various components, and the scale markings achieve precise adjustment of the positioning dimensions.

[0004] Existing technologies employ conventional methods such as positioning fixtures and support brackets. The single positioning and fixing method makes it difficult to ensure the stability of the positioning foundation for complex steel structure workpieces. The lack of buffer protection during the clamping process can easily damage the workpiece surface. The limited adjustment and adaptation capabilities cannot meet the welding requirements of workpieces of different specifications and thicknesses. In welding scenarios of complex structures such as H-shaped steel beams, problems such as wing plate displacement and insufficient main board fitting accuracy are prone to occur, resulting in increased welding errors and decreased welding quality. At the same time, the lack of versatility increases the equipment investment cost for welding operations in different scenarios. Summary of the Invention

[0005] The main objective of this invention is to provide a welding auxiliary device for prefabricated steel structures, which can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A welding auxiliary device for prefabricated steel structures includes a machine base, a housing disposed on the upper part of the machine base, and a control cabinet disposed on the upper part of the housing. Clamping plates for clamping steel beams are fixedly installed in a rectangular pattern on the upper part of the machine base. A welding auxiliary device that fits against the inner wall of the steel beam is disposed in the middle of the inner cavity of the housing. An electric winch and plasma welding equipment are disposed inside the control cabinet. Traction cables in a rectangular pattern are disposed on both the front and rear sides of the inner cavity of the housing. The outer surfaces of the two traction cables are fixedly connected to the welding auxiliary device. The two traction cables are wound around the surface of the electric winch inside the control cabinet.

[0007] Preferably, the welding aid includes wing plate positioning structures symmetrically arranged vertically within the inner cavity of the outer shell. Both wing plate positioning structures are fixedly connected to adjacent traction cables. On the side of the two wing plate positioning structures that are close to each other, wing plate clamping structures for clamping steel beam wing plates are symmetrically arranged front and rear. On the side of the two wing plate clamping structures that are close to each other on the same side, a positioning drive structure for fitting against the inner wall of the steel beam is provided. On the side of the two positioning drive structures located inside the steel beam, a crossbeam positioning structure for guiding the movement of the wing plate positioning structures is provided.

[0008] Preferably, the wing plate positioning structure includes a sliding plate that is slidably connected to the inner wall of the outer shell. A tension spring is fixedly connected to the upper end of the sliding plate. A U-shaped plate that is slidably connected to the outer surface of the sliding plate through a limiting groove is fixedly connected to the upper end of the tension spring. A connecting plate is fixedly connected to the lower end of the U-shaped plate. Rollers that are tightly attached to the end face of the steel beam wing plate are symmetrically fixedly installed on the lower end of the connecting plate.

[0009] Preferably, the lower end of the sliding plate is symmetrically connected to connecting blocks. Both connecting blocks are driven by an electric screw that is rotatably mounted on the inner surface of the sliding plate. The two connecting blocks are symmetrically connected to elastic connecting rods that are rotatably connected to the upper end of the connecting plate on the side that is close to each other. When the connecting blocks are close to each other, the connecting plate moves away from the sliding plate under the pressure of the elastic connecting rods.

[0010] Preferably, the wing plate clamping structure includes a sliding seat that is slidably connected to the positioning drive structure. The upper end of the sliding seat is fixedly connected to an mounting plate that is fixedly connected to an adjacent connecting block. The mounting plate has a first groove symmetrically opened on the left and right sides of the side near the crossbeam positioning structure. The mounting plate has a second groove opened on the side near the crossbeam positioning structure. The inner surfaces of the two first grooves are slidably connected to a positioning plate that fits against the inner wall of the wing plate. The inner wall of the second groove is slidably connected to an extrusion wheel that fits against the outer wall of the wing plate.

[0011] Preferably, the outer surface of the extrusion wheel is provided with arc-shaped extrusion blocks on both the upper and lower sides, which are slidably connected to the inner wall of the second slide groove. The side of each of the two arc-shaped extrusion blocks away from the extrusion wheel is fixedly connected to a spring plate that is slidably connected to the inner wall of the second slide groove. The left and right ends of the upper spring plate are fixedly connected to a drive cable that is fixedly connected to the lower end of the slide groove. The inner cavity of the mounting plate is rotatably connected to a threaded rod that is threadedly connected to the extrusion wheel. The lower end of the threaded rod is provided with a transmission component, which includes a gear for engaging the positioning drive structure and a gearbox for changing the transmission direction.

[0012] Preferably, the positioning drive structure includes a rectangular block slidably connected to two adjacent sliding seats, a sliding rod slidably connected to the inner wall of the rectangular block, a trapezoidal block fixedly connected to the side of the sliding rod near the beam positioning structure, a grounding wire connected to the grounding wire of the plasma welding equipment in the control cabinet fixedly connected to the inner wall of the trapezoidal block and the rectangular block, and the side of the outer surface of the rectangular block near the inner wall of the steel beam fixedly connected to the beam positioning structure.

[0013] Preferably, a hydraulic cavity is formed on the inner wall of the rectangular block away from the beam positioning structure. A piston plate is fixedly connected to the portion of the rectangular block located within the hydraulic cavity. A connecting pipe communicating with the beam positioning structure is symmetrically formed on the upper and lower sides of the inner wall of the hydraulic cavity. A tension spring two is fixedly connected to the inner wall of the tension spring two on the outer surface of the sliding rod located within the inner cavity of the rectangular block. A rack that drives the adjacent tension spring two is fixedly connected to both the upper and lower ends of the rectangular block. Guide rails that restrict the sliding trajectory of adjacent grounding wires are symmetrically fixedly connected to both the left and right sides of the rectangular block.

[0014] Preferably, the beam positioning structure includes extrusion members symmetrically installed on the outer wall of the rectangular block. Two rollers are symmetrically rotatably connected to the ends of the two extrusion members that are close to each other. Each of the two extrusion members has a hydraulic cavity on its inner surface that communicates with an adjacent connecting pipe. Each of the two extrusion members has a sliding groove symmetrically formed on the side near the steel beam flange. A fulcrum slider is slidably connected to the inner wall of each of the four sliding grooves 3. A piston rod is fixedly connected to the side of each of the four fulcrum sliders near the rectangular block and slidably connected to the inner wall of an adjacent hydraulic cavity. The two sliding grooves 3 on the same side... Some of the walls that are far apart are connected by levers that fit the arc-shaped surfaces of adjacent fulcrum sliders via torsion springs. Two levers on the same side are connected by contact blocks parallel to the extruders. The ends of the two extruders near the inner wall of the steel beam are connected to the contact blocks via telescopic rods, forming plasma nozzles. When the piston plate moves away from the steel beam, hydraulic oil in the hydraulic chamber enters the oil pressure chamber through the connecting pipe and pushes the piston rods on both sides away from each other. This causes the levers to rotate due to the change in the relative position of the fulcrum sliders and levers, so that the contact blocks fit against the inner wall of the steel beam.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention achieves initial positioning and fixation of the bottom of the steel beam by the rectangular distribution of clamping plates in conjunction with the welding aid, ensuring foundation stability. The symmetrical arrangement of traction cables in conjunction with the welding aid ensures smooth movement and avoids deviation. The cooperation between the wing plate positioning structure and the wing plate clamping structure achieves precise internal and external clamping of the wing plates to prevent welding displacement. The cooperation between the positioning drive structure and the crossbeam positioning structure accurately calibrates the relative position of the wing plates and the main plate to ensure positional accuracy. The coordinated operation of each core structure improves welding quality and reduces errors. At the same time, it is compatible with different specifications of H-shaped steel beams, greatly improving the versatility of the device, and effectively protects the integrity of the workpiece surface, achieving stable and efficient welding auxiliary operation throughout the process.

[0016] 2. This invention achieves flexible positioning of the wing plate by using the sliding plate and elastic connecting rod of the wing plate positioning structure to avoid rigid impact. The cooperation between the roller and the wing plate reduces friction damage to the workpiece surface. The cooperation between the tension spring and the connecting plate ensures flexibility for subsequent adjustments. The cooperation between the positioning plate and the extrusion wheel of the wing plate clamping structure ensures firm clamping of the wing plate inside and out to prevent displacement. The cooperation between the spring plate and the arc-shaped extrusion block buffers the clamping pressure to protect the wing plate. The drive cable ensures the synchronous movement of the extrusion wheel. The overall design is adaptable to steel beams of different specifications, improving versatility and ensuring accurate welding positioning.

[0017] 3. This invention ensures the sliding stability of the component through the cooperation of the rectangular block of the positioning drive structure and the sliding seat; improves the fitting accuracy with the main board through the cooperation of the sliding rod and the trapezoidal block; and forms a stable welding circuit and ensures stable operation through the cooperation of the grounding wire and the guide rail. The precise positioning of the main board is achieved through the coordinated cooperation of the positioning drive structure and the crossbeam positioning structure. Smooth and precise movement of the contact block is achieved through the cooperation of the hydraulic chamber, the connecting pipe, and the oil pressure chamber. Roller II reduces movement friction. The telescopic rod adapts to main boards of different thicknesses. The cooperation of tension spring II and the rack ensures flexible adjustment and synchronized movement, thereby improving welding stability and positioning accuracy. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional structural diagram of the outer casing of the present invention; Figure 3 This is a schematic diagram of the welding aid of the present invention; Figure 4 This is a schematic diagram of the wing plate positioning structure of the present invention; Figure 5 This is a schematic diagram of the wing plate clamping structure of the present invention; Figure 6 This is a cross-sectional schematic diagram of the wing plate clamping structure of the present invention; Figure 7This is a schematic diagram showing the connection relationship between the positioning drive structure and the wing plate clamping structure of the present invention; Figure 8 This is a schematic diagram of the positioning drive structure of the present invention; Figure 9 This is a schematic diagram of the beam positioning structure of the present invention.

[0019] In the diagram: 1. Machine base; 2. Outer casing; 3. Control cabinet; 31. Traction cable; 4. Clamping plate; 5. Welding auxiliary device; 51. Wing plate positioning structure; 511. Sliding plate; 512. Connecting block; 513. Elastic connecting rod; 514. U-shaped plate; 515. Tension spring one; 516. Electric screw; 517. Roller one; 518. Connecting plate; 52. Positioning drive structure; 520. Piston plate; 521. Rectangular block; 522. Sliding rod; 523. Grounding wire; 524. Trapezoidal block; 525. Guide rail; 526. Rack; 527. Tension spring two; 528. Connecting pipe; 529. Hydraulic chamber; 53. Wing plate clamping structure; 531. Sliding seat; 532. Mounting plate; 533. Slide groove one; 534. Slide groove two; 535. Extrusion wheel; 5351. Spring plate; 5352. Arc-shaped extrusion block; 5353. Drive cable; 536. Positioning plate; 537. Transmission component; 538. Threaded rod; 54. Crossbeam positioning structure; 541. Extrusion component; 542. Roller two; 543. Slide groove three; 544. Piston rod; 545. Hydraulic chamber; 546. Pivot slider; 547. Lever; 548. Contact block. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0021] Example 1: A welding auxiliary device for prefabricated steel structures, see reference. Figure 1 and Figure 2The system includes a machine base 1, an outer shell 2 mounted on top of the machine base 1, and a control cabinet 3 mounted on top of the outer shell 2. Clamping plates 4 are fixedly installed in a rectangular pattern on the top of the machine base 1 to hold the steel beam. This rectangular installation method provides initial positioning and fixation of the bottom of the steel beam, offering basic stability for subsequent positioning work. A welding auxiliary device 5, conforming to the inner wall of the steel beam, is located in the center of the inner cavity of the outer shell 2. The welding auxiliary device 5 is the core component for achieving precise positioning and clamping of the steel beam. An electric winch and plasma welding equipment are installed inside the control cabinet 3. The electric winch provides power for the movement of the welding auxiliary device 5, while the plasma welding equipment ensures the welding operation. Rectangularly distributed traction cables 31 are installed on both the front and rear sides of the inner cavity of the outer shell 2. The outer surfaces of both traction cables 31 are fixedly connected to the welding auxiliary device 5. Both traction cables 31 are wound around the surface of the electric winch inside the control cabinet 3. The symmetrical arrangement of the traction cables 31 ensures the stability of the welding auxiliary device 5 during movement, effectively preventing it from shifting, thus guaranteeing the accuracy of subsequent positioning and welding work.

[0022] For further details, please refer to [link / reference]. Figure 3 The welding auxiliary device 5 includes wing plate positioning structures 51 symmetrically arranged in the inner cavity of the outer shell 2. The wing plate positioning structures 51 are mainly used to achieve initial pressure positioning of the steel beam wing plates. Both wing plate positioning structures 51 are fixedly connected to adjacent traction cables 31, so that the traction cables 31 can drive the wing plate positioning structures 51 to move synchronously. On the side of the two wing plate positioning structures 51 that are close to each other, there are wing plate clamping structures 53 symmetrically arranged front and back for clamping the steel beam wing plates. The wing plate clamping structures 53 can tightly clamp the wing plates from both the inside and outside sides to prevent the wing plates from shifting during welding. The two wing plates on the same side The clamping structures 53 are provided with a positioning drive structure 52 on their adjacent sides for fitting against the inner wall of the steel beam. The positioning drive structure 52 not only provides a base for the installation and sliding of the wing plate clamping structure 53, but also enables the positioning of the main plate and ensures the stability of the welding circuit. On the side of the two positioning drive structures 52 located inside the steel beam, there is a crossbeam positioning structure 54 for guiding the movement of the wing plate positioning structure 51. The crossbeam positioning structure 54 can cooperate with the wing plate clamping structure 53 to accurately calibrate the relative position of the two wing plates and the main plate, ensuring the positional accuracy of each component of the H-shaped steel beam.

[0023] During operation of this embodiment, the rectangular distribution of clamping plates 4, in conjunction with the welding aid 5, achieves initial positioning and fixation of the bottom of the steel beam to ensure foundation stability. The symmetrical arrangement of traction cables 31, in conjunction with the welding aid 5, ensures smooth movement and avoids deviation. The cooperation between the wing plate positioning structure 51 and the wing plate clamping structure 53 achieves precise internal and external clamping of the wing plate to prevent welding displacement. The cooperation between the positioning drive structure 52 and the crossbeam positioning structure 54 precisely calibrates the relative position of the wing plate and the main plate to ensure positional accuracy. The coordinated operation of each core structure improves welding quality and reduces errors. At the same time, it is compatible with H-shaped steel beams of different specifications, greatly improving the versatility of the device, and effectively protects the integrity of the workpiece surface, achieving stable and efficient welding auxiliary operation throughout the process.

[0024] Example 2, based on Example 1, achieves flexible positioning of the wing plate by cooperating with the sliding plate 511 of the wing plate positioning structure 51 and the elastic connecting rod 513 to avoid rigid impact. The cooperation between the roller 517 and the wing plate reduces friction damage to the workpiece surface. The cooperation between the tension spring 515 and the connecting plate 518 ensures flexibility for subsequent adjustments. The cooperation between the positioning plate 536 of the wing plate clamping structure 53 and the extrusion wheel 535 ensures firm clamping of the wing plate inside and outside to prevent displacement. The cooperation between the spring plate 5351 and the arc-shaped extrusion block 5352 buffers the clamping pressure to protect the wing plate. The drive cable 5353 ensures the synchronous movement of the extrusion wheel 535. The whole system is adaptable to steel beams of different specifications, improving versatility and ensuring welding positioning accuracy.

[0025] For further details, please refer to [link / reference]. Figure 4 The wing plate positioning structure 51 includes a sliding plate 511 that is slidably connected to the inner wall of the outer shell 2. The sliding plate 511 can be slidably adjusted to the position of steel beams of different specifications on the inner wall of the outer shell 2. A tension spring 515 is fixedly connected to the upper end of the sliding plate 511. The tension spring 515 can provide a reset force for the connecting plate 518 to ensure the flexibility of subsequent adjustment. A U-shaped plate 514 is fixedly connected to the upper end of the tension spring 515 through a limiting groove and slidably connected to the outer surface of the sliding plate 511. The U-shaped plate 514 plays a connecting and guiding role to ensure the stability of the movement of the connecting plate 518. A connecting plate 518 is fixedly connected to the lower end of the U-shaped plate 514. The connecting plate 518 is a key component for transmitting positioning pressure. Rollers 517 that are tightly attached to the end face of the steel beam wing plate are symmetrically fixedly installed at the lower end of the connecting plate 518. The rollers 517 can convert sliding friction into rolling friction, effectively reducing frictional damage between the wing plate positioning structure 51 and the end face of the wing plate when the wing plate is moved, and protecting the integrity of the workpiece surface.

[0026] For further details, please refer to [link / reference]. Figure 4The lower end of the sliding plate 511 is symmetrically connected to the connecting blocks 512. The connecting blocks 512 are important components for transmitting driving force. Both connecting blocks 512 are driven by electric screws 516 that are rotatably installed on the inner surface of the sliding plate 511. The electric screws 516 provide power for the movement of the connecting blocks 512. The two connecting blocks 512 are symmetrically rotatably connected to the upper end of the connecting plate 518 on the side that is close to each other. The elastic connecting rods 513 have good elastic buffering performance, which can prevent the connecting plate 518 from causing rigid impact on the wing plate when it moves. When the connecting blocks 512 are close to each other, the connecting plate 518 moves away from the sliding plate 511 under the pressure of the elastic connecting rods 513, thereby driving the roller 517 to be tightly attached to the end face of the steel beam wing plate to achieve positioning.

[0027] For further details, please refer to [link / reference]. Figure 5 and Figure 6 The wing plate clamping structure 53 includes a sliding seat 531 slidably connected to the positioning drive structure 52. The sliding seat 531 provides a guiding foundation for the movement of the wing plate clamping structure 53. The upper end of the sliding seat 531 is fixedly connected to a mounting plate 532 fixedly connected to an adjacent connecting block 512. The mounting plate 532 serves to connect the sliding seat 531 and the connecting block 512, so that the movement of the connecting block 512 can synchronously drive the movement of the mounting plate 532. The mounting plate 532 has symmetrically opened grooves 533 on the left and right sides near the crossbeam positioning structure 54. The first groove 533 provides trajectory restriction for the sliding of the positioning plate 536. The mounting plate 532 has a second groove 534 on the side near the crossbeam positioning structure 54. The second groove 534 provides guidance for the sliding of the extrusion wheel 535. The inner surfaces of the two first grooves 533 are slidably connected to the positioning plate 536 that fits against the inner wall of the wing plate. The positioning plate 536 provides support and positioning from the inner wall of the wing plate. The inner wall of the second groove 534 is slidably connected to the extrusion wheel 535 that fits against the outer wall of the wing plate. The extrusion wheel 535 and the positioning plate 536 cooperate to achieve the inner and outer clamping and fixing of the wing plate.

[0028] For further details, please refer to [link / reference]. Figure 6Both the upper and lower sides of the outer surface of the extrusion roller 535 are provided with arc-shaped extrusion blocks 5352 that slide in connection with the inner wall of the second slide groove 534. The arc-shaped extrusion blocks 5352 can better adapt to the shape of the outer wall of the wing plate and improve the clamping fit. The side of each arc-shaped extrusion block 5352 away from the extrusion roller 535 is fixedly connected with a spring plate 5351 that slides in connection with the inner wall of the second slide groove 534. The spring plate 5351 can further buffer the clamping pressure and avoid excessive clamping force from damaging the surface of the wing plate. The left and right ends of the upper spring plate 5351 are fixedly connected to the lower side of the first slide groove 533. The drive cable 5353 is fixedly connected to the end, which ensures the synchronicity of the movement of the extrusion wheel 535. The inner cavity of the mounting plate 532 is rotatably connected to a threaded rod 538 that is threaded to the extrusion wheel 535. The threaded rod 538 provides driving force for the sliding of the extrusion wheel 535. The lower end of the threaded rod 538 is provided with a transmission component 537, which includes a gear for meshing with the positioning drive structure 52 and a gearbox for changing the transmission direction. The transmission component 537 can realize the precise transmission of power and the change of direction, ensuring the stable rotation of the threaded rod 538.

[0029] In Example 3, based on Example 2, the rectangular block 521 of the positioning drive structure 52 and the sliding seat 531 ensure the sliding stability of the component; the sliding rod 522 and the trapezoidal block 524 improve the fitting accuracy with the main board; the grounding wire 523 and the guide rail 525 form a stable welding circuit and ensure stable operation; the positioning drive structure 52 and the crossbeam positioning structure 54 work together to achieve precise positioning of the main board; the hydraulic chamber 529, the connecting pipe 528 and the oil pressure chamber 545 work together to achieve smooth and precise movement of the contact block 548; the roller 542 reduces moving friction; the telescopic rod adapts to main boards of different thicknesses; and the tension spring 527 and the rack 526 work together to ensure flexible adjustment and synchronized movement, thereby improving welding stability and positioning accuracy.

[0030] For further details, please refer to [link / reference]. Figure 7 and Figure 8The positioning drive structure 52 includes a rectangular block 521 slidably connected to two adjacent sliding seats 531. The rectangular block 521 provides an installation carrier for each component. A sliding rod 522 is slidably connected to the inner wall of the rectangular block 521. A trapezoidal block 524 is fixedly connected to the side of the sliding rod 522 near the crossbeam positioning structure 54. The sliding rod 522 drives the trapezoidal block 524 to move, which can improve the fitting accuracy between the positioning drive structure 52 and the main board. The inner walls of the trapezoidal block 524 and the rectangular block 521 are jointly fixedly connected to a grounding wire 523 that is connected to the grounding wire of the plasma welding equipment in the control cabinet 3. The grounding wire 523 is used to form a stable welding circuit, ensure the smooth transmission of welding current, ensure the smooth progress of the plasma welding process, and thus improve the stability and reliability of welding. The outer surface of the rectangular block 521 near the inner wall of the steel beam is fixedly connected to the crossbeam positioning structure 54 to realize the coordinated action of the positioning drive structure 52 and the crossbeam positioning structure 54.

[0031] For further details, please refer to [link / reference]. Figure 9 A hydraulic chamber 529 is formed on the inner wall of the rectangular block 521 away from the beam positioning structure 54. The hydraulic chamber 529 is used to store and transfer hydraulic oil. A piston plate 520 is fixedly connected to the portion of the rectangular block 521 located inside the hydraulic chamber 529. The movement of the piston plate 520 can change the oil pressure in the hydraulic chamber 529. A connecting pipe 528, which communicates with the beam positioning structure 54, is symmetrically formed on the upper and lower inner wall of the hydraulic chamber 529. The connecting pipe 528 is used to realize the transfer of hydraulic oil between the hydraulic chamber 529 and the beam positioning structure 54. A tension spring is fixedly connected to the portion of the outer surface of the sliding rod 522 located inside the rectangular block 521. The inner wall of the second tension spring 527 is elastically connected to the second tension spring 527. The second tension spring 527 can provide a stable reset force for the sliding rod 522, ensuring the flexibility of subsequent adjustment of the sliding rod 522. The upper and lower ends of the rectangular block 521 are fixedly connected to racks 526 that drive the adjacent second tension spring 527. The racks 526 can ensure the synchronous consistency of the upper and lower ends of the positioning drive structure 52, improving the positioning accuracy. The left and right sides of the rectangular block 521 are symmetrically fixedly connected to guide rails 525 that limit the sliding trajectory of the adjacent grounding wire 523. The guide rails 525 can limit the sliding trajectory of the grounding wire 523 and ensure its stable operation.

[0032] For further details, please refer to [link / reference]. Figure 9The beam positioning structure 54 includes extrusion members 541 symmetrically mounted on the outer wall of the rectangular block 521. The extrusion members 541 provide the mounting base for other components of the beam positioning structure 54. Two rollers 542 are symmetrically rotatably connected to the ends of the two extrusion members 541 that are close to each other. The rollers 542 can reduce the friction between the beam positioning structure 54 and the main board when moving, and improve the smoothness of movement. The inner surfaces of the two extrusion members 541 are provided with hydraulic chambers 545 that communicate with the adjacent connecting pipes 528. The hydraulic chambers 545 are used to receive hydraulic pressure. The hydraulic oil drives the components to move. Two extrusion parts 541 have symmetrically arranged grooves 543 on the side near the steel beam flange. These grooves 543 guide the sliding of the fulcrum slider 546. The inner walls of all four grooves 543 are slidably connected to the fulcrum slider 546. The movement of the fulcrum slider 546 drives the lever 547 to rotate. Each of the four fulcrum sliders 546 has a piston rod 544 fixedly connected to the side near the rectangular block 521, which is slidably connected to the inner wall of the adjacent hydraulic chamber 545. The piston rod 544, driven by the hydraulic oil, drives the lever 547 to rotate. The slider 546 moves, and the inner walls of the two sliding grooves 543 on the same side, which are far apart from each other, are connected by levers 547 that fit against the arc-shaped surface of the adjacent fulcrum slider 546 via torsion springs. Levers 547 play the role of force transmission and conversion. The two levers 547 on the same side are connected by contact blocks 548 parallel to the extrusion parts 541. Contact blocks 548 fit tightly against the inner wall of the steel beam to achieve positioning of the main board. The plasma nozzles of the two extrusion parts 541, which are close to the inner wall of the steel beam, are connected to the contact blocks 548 via telescopic rods. The retractable rod can flexibly adjust the position of the contact block 548 to adapt to mainboards of different thicknesses. When the piston plate 520 moves away from the steel beam, the hydraulic oil in the hydraulic chamber 529 enters the oil pressure chamber 545 through the connecting pipe 528 and pushes the piston rods 544 on both sides away from each other. This causes the lever 547 to rotate through the relative position change of the fulcrum slider 546 and the lever 547, so that the contact block 548 fits against the inner wall of the steel beam. This hydraulic drive method can achieve smooth and precise movement of the contact block 548, ensuring a firm clamping of the mainboard.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A welding auxiliary device for fabricated prefabricated steel structure, comprising a machine table (1), a shell (2) arranged at the upper end of the machine table (1), and a control cabinet (3) arranged at the upper end of the shell (2), characterized in that: The machine platform (1) upper end rectangular distribution fixed installation is used for clamping steel beam's clamping plate (4), the shell (2) inner chamber middle part is provided with the welding auxiliary device (5) that accords with steel beam inner wall, the control cabinet (3) inside is provided with electric winch and plasma welding equipment, the shell (2) inner chamber front and rear both sides are provided with the traction cable (31) that presents rectangular distribution, two the traction cable (31) outer surface is fixedly connected with welding auxiliary device (5), two the traction cable (31) are all wound on the surface of electric winch in control cabinet (3).

2. The welding aid for fabricated pre-fabricated steel structures as claimed in claim 1, wherein: The welding auxiliary device (5) includes wing plate positioning structure (51) that is symmetrically arranged in the inner chamber of the shell (2), both wing plate positioning structures (51) are fixedly connected with adjacent traction cable (31), both wing plate positioning structures (51) are symmetrically provided with wing plate clamping structure (53) on the side close to each other, the same side two wing plate clamping structures (53) are symmetrically provided with positioning drive structure (52) on the side close to each other, both positioning drive structures (52) are provided with beam positioning structure (54) for guiding the movement of wing plate positioning structure (51) on the side inside the steel beam.

3. The welding aid for fabricated pre-fabricated steel structures as claimed in claim 2, wherein: The wing plate positioning structure (51) includes a sliding plate (511) slidably connected with the inner wall of the shell (2), a tension spring (515) is fixedly connected to the upper end of the sliding plate (511), a U-shaped plate (514) is slidably connected with the outer surface of the sliding plate (511) through a limiting groove, the upper end of the tension spring (515) is fixedly connected to the U-shaped plate (514), a connecting plate (518) is fixedly connected to the lower end of the U-shaped plate (514), and two roller (517) are symmetrically fixedly installed on the lower end of the connecting plate (518) and tightly contact the end face of the steel beam wing plate.

4. The welding aid for fabricated pre-fabricated steel structures as claimed in claim 3, wherein: The lower end of the sliding plate (511) is symmetrically connected with a connecting block (512), both connecting blocks (512) are driven by an electric screw rod (516) rotatably installed in the inner surface of the sliding plate (511), both connecting blocks (512) are rotatably connected with an elastic connecting rod (513) rotatably connected with the upper end of the connecting plate (518) on the side close to each other, when the connecting blocks (512) are close to each other, the connecting plate (518) moves away from the sliding plate (511) under the compression of the elastic connecting rod (513).

5. The welding aid for fabricated pre-fabricated steel structures as claimed in claim 4, wherein: The wing plate clamping structure (53) includes a sliding seat (531) slidably connected with the positioning drive structure (52), an installation plate (532) is fixedly connected with the adjacent connecting block (512) on the upper end of the sliding seat (531), a slide groove (533) is symmetrically formed on the side close to the beam positioning structure (54) of the installation plate (532), a slide groove (534) is formed on the side close to the beam positioning structure (54) of the installation plate (532), a positioning plate (536) is slidably connected in the inner surface of the slide groove (533) and tightly contacts the inner wall of the wing plate, and an extrusion wheel (535) is slidably connected in the inner wall of the slide groove (534) and tightly contacts the outer wall of the wing plate.

6. The welding aid for fabricated pre-fabricated steel structures as claimed in claim 5 wherein: The outer surface of the extrusion wheel (535) is provided with an arc-shaped extrusion block (5352) on both sides which is in sliding connection with the inner wall of the chute two (534), the side away from the extrusion wheel (535) of the two arc-shaped extrusion blocks (5352) is fixedly connected with a spring plate (5351) which is in sliding connection with the inner wall of the chute two (534), the left and right ends of the spring plate (5351) on the upper side are fixedly connected with a driving cable (5353) which is fixedly connected with the lower end of the chute one (533), the inner cavity of the mounting plate (532) is rotatably connected with a threaded rod (538) which is in threaded connection with the extrusion wheel (535), the lower end of the threaded rod (538) is provided with a transmission part (537), and the transmission part (537) comprises a gear for engaging and positioning the driving structure (52) and a gear box for converting the transmission direction.

7. The welding aid for fabricated pre-fabricated steel structures as claimed in claim 5 wherein: The positioning driving structure (52) comprises a rectangular block (521) in sliding connection with the adjacent two sliding seats (531), the inner wall of the rectangular block (521) is in sliding connection with a sliding rod (522), the side of the sliding rod (522) close to the cross beam positioning structure (54) is fixedly connected with a trapezoidal block (524), the inner walls of the trapezoidal block (524) and the rectangular block (521) are fixedly connected with an earth wire (523) which is in connection with the ground wire of the control cabinet (3), and the side of the outer surface of the rectangular block (521) close to the inner wall of the steel beam is fixedly connected with the cross beam positioning structure (54).

8. The welding aid for fabricated pre-fabricated steel structures as claimed in claim 7, wherein: The side of the inner wall of the rectangular block (521) away from the cross beam positioning structure (54) is provided with a hydraulic cavity (529), the part of the rectangular block (521) in the inner cavity of the hydraulic cavity (529) is fixedly connected with a piston plate (520), the inner wall of the hydraulic cavity (529) is symmetrically provided with a communication pipe (528) which is in communication with the cross beam positioning structure (54), the outer surface of the sliding rod (522) is fixedly connected with a tensile spring two (527) which is in elastic connection with the inner wall of the tensile spring two (527), the upper and lower ends of the rectangular block (521) are fixedly connected with a rack (526) which is in transmission with the adjacent tensile spring two (527), and the left and right sides of the rectangular block (521) are fixedly connected with a guide rail (525) which limits the sliding track of the adjacent earth wire (523).

9. The welding aid for fabricated pre-fabricated steel structures as claimed in claim 8, wherein: The crossbeam positioning structure (54) includes extruded pieces (541) symmetrically installed on the outer wall of the rectangular block (521), two ends of the extruded pieces (541) close to each other are symmetrically connected with the front and back roller two (542), the inner surfaces of the extruded pieces (541) are both provided with oil pressure cavities (545) communicated with adjacent communicating pipes (528), the sides of the extruded pieces (541) close to the wing plates of the steel beam are both symmetrically provided with the left and right sliding grooves three (543), the inner walls of the four sliding grooves three (543) are both slidably connected with the fulcrum sliding blocks (546), the sides of the four fulcrum sliding blocks (546) close to the rectangular block (521) are both fixedly connected with the piston rods (544) slidably connected with the inner walls of the adjacent oil pressure cavities (545), the inner walls of the two sliding grooves three (543) on the same side and away from each other are both rotatably connected with the levers (547) abutting the arc surfaces of the adjacent fulcrum sliding blocks (546) through the torsional springs, and the two levers (547) on the same side are rotatably connected with the contact blocks (548) parallel to the extruded pieces (541), and the ends of the two extruded pieces (541) close to the inner wall of the steel beam are both connected with the plasma jet nozzles through the telescopic rods and the contact blocks (548); when the piston plate (520) moves away from the steel beam, the hydraulic oil in the hydraulic cavity (529) enters the oil pressure cavities (545) through the communicating pipes (528) and pushes the piston rods (544) on both sides away from each other, so that the relative position of the fulcrum sliding blocks (546) and the levers (547) is changed to push the levers (547) to rotate, so that the contact blocks (548) abut the inner wall of the steel beam.

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