Steel structure welding positioning device

Abstract

The application relates to the technical field of steel structure welding positioning devices, in particular to a steel structure welding positioning device, which comprises a welding workbench and a positioning underframe arranged on the welding workbench. Rotating shafts are rotatably connected to the two ends of the bottom of the positioning underframe, and the rotating shafts are used for supporting the bending rollers. The positioning underframe is used for supporting the web plates. A plurality of moving openings are arranged on the welding workbench and located on the two sides of the positioning underframe. The bending end positioning mechanism is arranged, so that when the wing plate is bent and wrapped outside one end of the web plate through the bending roller after the wing plate and the web plate are adjusted, the bending end positioning mechanism can synchronously increase the clamping force on the wing plate close to the bending position along with the rotation of the rotating shaft, so that the pre-stress generated when the wing plate is bent is resisted, the phenomenon that the other end of the wing plate is warped due to the action of the pre-stress is prevented, and the welding precision of the H-shaped steel beam of the light steel structure carport is ensured.

Description

Technical Field

[0001] This invention relates to the technical field of steel structure welding positioning devices, specifically a steel structure welding positioning device. Background Technology

[0002] The H-beams of the lightweight steel structure photovoltaic carport consist of a web and two flanges. When welding the H-beams, the web is first placed on the welding workbench, and then the two flanges are placed on the outside of the web. The two flanges are clamped and positioned on the outside of the web using clamps. Bending rollers bend the two ends of the two flanges and wrap them around the two ends of the web. Then, the workers use welding tools to spot weld the spliced ​​steel structure in sequence.

[0003] However, when the clamps hold and position the flanges and webs, the workers need to constantly adjust the position of the flanges. At the same time, the clamping position of the clamps is relatively fixed. When the bending roller bends one end of the flange, the other end of the flange will warp due to the prestress, which will cause the steel structure to shift during welding. To address this, we propose a steel structure welding positioning device. Summary of the Invention

[0004] The purpose of this invention is to provide a steel structure welding positioning device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a steel structure welding positioning device, comprising a welding workbench and a positioning base frame disposed on the welding workbench, wherein the two ends of the bottom of the positioning base frame are rotatably connected to a rotating shaft, and the rotating shaft is used to support the bending roller, the positioning base frame is used to support the web plate, and the welding workbench and the positioning base frame are provided with multiple moving openings on both sides, the moving openings being provided with a support shaft, the welding workbench having two support shells inside, and the two support shells respectively supporting the multiple support shafts, the support shells having a rotating mechanism inside, and the rotating mechanism being used to drive the multiple support shafts;

[0006] The welding workbench is equipped with a connecting mechanism inside, which is used to connect the two support shells.

[0007] The moving port is slidably connected to an extrusion wheel, and the positioning base is provided with a mating wheel. The mating wheel and the extrusion wheel cooperate with each other to position the wing plate and the web plate. The welding worktable is provided with a lifting mechanism, which supports multiple mating wheels.

[0008] The welding workbench is also equipped with two bending end positioning mechanisms, which are respectively connected to two support shells and are connected to a rotating shaft.

[0009] Furthermore, the connecting mechanism includes a connecting plate, a bidirectional threaded screw, and a drive motor. There are two connecting plates, which are respectively fixedly installed at the bottom of two support shells. The connecting plates are provided with threaded holes, and the bidirectional threaded screw is threadedly connected to the two connecting plates respectively. The drive motor is installed inside the welding workbench and is used to drive the bidirectional threaded screw.

[0010] Furthermore, the lifting mechanism includes a first electric push rod and a lifting frame. There are two first electric push rods, which are respectively fixedly installed at both ends of the welding workbench. The lifting frame is installed on the output ends of the two first electric push rods. A connecting shaft is fixedly connected to the top of the mating wheel, and the connecting shaft is rotatably connected to the bottom of the lifting frame.

[0011] Furthermore, the bottom of the mating wheel is provided with a guide cone surface, and the side of the mating wheel near the wing plate is provided with a guide protrusion. Through the provided guide protrusion, the mating wheel and the extrusion wheel can cooperate with each other to achieve the function of adjusting the position of the wing plate.

[0012] Furthermore, a driven gear is installed above the mating wheel and on the connecting shaft, and a driving gear is fixedly connected to the top of the extrusion wheel. When the driving gear moves to the driven gear, it meshes with the driven gear.

[0013] Furthermore, the welding workbench is provided with grooves at the joints of the two wing plates, and two pressure sensors are respectively provided in the grooves. A first elastic rod and a second elastic rod are respectively installed on the two pressure sensors. Through the infrared sensor, the position of the wing plate can be detected.

[0014] Furthermore, a second electric push rod is installed at both ends of the lifting frame. A push cone is fixedly connected to the bottom of the second electric push rod. The push cone is located on the outside of one end of the wing plate after bending. The push cone further assists in positioning the wing plate after bending.

[0015] Furthermore, the bending end positioning mechanism includes a synchronizing element, a contact wheel, a clamping block, a moving element, a clamping wheel, and a fixed wheel. The synchronizing element is installed at the bottom of the rotating shaft, and one end of the synchronizing element extends into the inside of the welding workbench. The synchronizing element is connected to the contact wheel. One side of the clamping block is provided with a pushing inclined surface, and the contact wheel contacts the pushing inclined surface.

[0016] The support shell is provided with a support opening, and a movable component is located at the support opening. The clamping block is connected to the movable component, and a fixed rod is installed on the movable component. The fixed rod slides through the corresponding movable opening. The clamping wheel is located above the movable opening and is fixedly installed on the fixed rod. The fixed wheel is located on the web plate, and the fixed wheel and the clamping wheel clamp and position one end of the wing plate during bending. The fixed wheel is fixedly installed at the bottom of the lifting frame. Through the provided bending end positioning mechanism, the wing plate is positioned while being bent.

[0017] Furthermore, the synchronizing component includes a synchronizing plate, a rotating support rod, a pushing frame, and a limiting component. The synchronizing plate is fixedly installed at the bottom of the rotating shaft. The bottom of the synchronizing plate, offset from the rotating shaft, is rotatably connected to one end of the rotating support rod via a rotating shaft. The other end of the rotating support rod is rotatably connected to the pushing frame via a rotating shaft. The limiting component is disposed inside the welding workbench and is used to guide the pushing frame.

[0018] The contact wheel is rotatably connected to one end of the push frame. Through the provided synchronizing element, the clamping wheel drive can rotate synchronously with the rotating shaft.

[0019] Furthermore, the movable component includes a movable block and a connecting spring. The movable block slides through the support opening. Multiple connecting springs are provided, and the multiple connecting springs are respectively installed at both ends of the support opening. The other end of the multiple connecting springs is fixedly connected to the movable block. The clamping block is fixedly installed at the bottom of the movable block, and the fixing rod is fixedly installed on the movable block. Through the provided movable component, the fixing rod is supported.

[0020] This invention has at least the following beneficial effects:

[0021] 1. Before welding a lightweight steel structure carport, this invention utilizes multiple extrusion rollers and multiple mating rollers on a welding worktable, with one extrusion roller and one mating roller located on both sides of the wing plate. This allows for clamping and positioning of the wing plate and web plate. Simultaneously, a rotating mechanism, driven gear, driving gear, and pressure sensor enable precise and automated adjustment of the wing plate relative to the web plate, eliminating the need for manual readjustment and ensuring the welding accuracy between the wing plate and web plate in the subsequent process.

[0022] 2. The present invention, through the provided bending end positioning mechanism, enables the bending end positioning mechanism to simultaneously increase the clamping force on the wing plate near the bending position as the rotating shaft rotates, so as to resist the prestress generated when the wing plate is bent, thereby preventing the wing plate from warping due to the prestress on the other end of the wing plate, thus ensuring the welding accuracy of the H-beam of the lightweight steel structure carport. Attached Figure Description

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

[0024] Figure 2 This is a top view of the overall structure of the present invention;

[0025] Figure 3 This is a side view of the overall structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the welding workbench structure of the present invention;

[0027] Figure 5 This is a schematic diagram of the mating wheel structure of the present invention;

[0028] Figure 6 This is a schematic diagram of the internal structure of the welding workbench of the present invention;

[0029] Figure 7 This is a schematic diagram of the cone-shaped structure of the present invention;

[0030] Figure 8 This is a schematic diagram of the positioning base structure of the present invention;

[0031] Figure 9 For the present invention Figure 8 Enlarged structural diagram of region A in the middle;

[0032] Figure 10 This is a schematic diagram of the extrusion wheel structure of the present invention;

[0033] Figure 11 This is a schematic diagram of the internal structure of the support shell of the present invention;

[0034] Figure 12 This is a schematic diagram of the bending end positioning mechanism of the present invention;

[0035] Figure 13 This is a schematic diagram of the pusher frame structure of the present invention;

[0036] Figure 14 This is a schematic diagram of the clamping block structure of the present invention.

[0037] In the diagram: 1-Welding workbench; 11-Moving port; 12-Groove; 13-Pressure sensor; 14-First elastic rod; 15-Second elastic rod; 2-Positioning base; 3-Rotating shaft; 4-Supporting shaft; 5-Supporting shell; 51-Rotating mechanism; 511-Rotating gear; 512-Gear chain; 513-Guide wheel; 514-Rotating motor; 52-Supporting port; 6-Connecting mechanism; 61-Connecting plate; 62-Double threaded screw; 63-Drive motor; 7-Extrusion wheel; 71-Driving gear; 8-Matching wheel; 81-Guide cone surface; 9-Lifting mechanism; 91- First electric push rod; 92-Lifting frame; 921-Second electric push rod; 922-Pushing cone block; 93-Connecting shaft; 931-Driven gear; 10-Bending end positioning mechanism; 101-Synchronizer; 1011-Synchronizer plate; 1012-Rotating support rod; 1013-Pushing frame; 1014-Limiting component; 10141-Limiting track; 102-Contact wheel; 103-Clamping block; 1031-Pushing inclined plane; 104-Moving component; 1041-Moving block; 1042-Connecting spring; 105-Clamping wheel; 106-Fixed wheel; 107-Fixed rod. Detailed Implementation

[0038] 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.

[0039] Example 1

[0040] Please see Figures 1 to 5 A steel structure welding positioning device includes a welding workbench 1 and a positioning base 2 set on the welding workbench 1. The width of the positioning base 2 in this application is less than or equal to the width of the web plate, thereby ensuring that the positioning base 2 can support the web plate and at the same time ensure that the wing plate can be connected to the side of the web plate.

[0041] The bottom ends of the positioning base 2 are rotatably connected to rotating shafts 3, which are used to support the bending roller. As a further explanation, the welding workbench 1 is also equipped with a transmission mechanism, which consists of a motor and a gear assembly. This transmission mechanism is used to drive the rotating shaft 3 to rotate 180°. At the same time, a connecting frame is installed on the rotating shaft 3, which is used to support the bending roller. All of the above structures are existing structures, so they will not be described in detail.

[0042] When the rotating shaft 3 rotates, it can drive the bending wheel to rotate relative to the outer side of the wing plate, so that the wing plate bends and wraps around the outer side of the web plate.

[0043] Please see Figures 1 to 11 The positioning base 2 is used to support the web plate. The welding workbench 1 is provided with multiple moving ports 11 on both sides of the positioning base 2. The moving ports 11 are provided with support shafts 4. The welding workbench 1 is provided with two support shells 5 inside. The support shells 5 are slidably connected inside the welding workbench 1, and the two support shells 5 respectively support the multiple support shafts 4. The support shells 5 are provided with a rotating mechanism 51 inside, and the rotating mechanism 51 is used to drive the multiple support shafts 4.

[0044] The welding workbench 1 is equipped with a connecting mechanism 6, which is used to connect two support shells 5. The connecting mechanism 6 includes a connecting plate 61, a bidirectional threaded screw 62, and a drive motor 63. There are two connecting plates 61, which are respectively fixedly installed at the bottom of the two support shells 5. The connecting plates 61 are provided with threaded holes, and the bidirectional threaded screw 62 is threadedly connected to the two connecting plates 61 respectively. The drive motor 63 is installed inside the welding workbench 1 and is used to drive the bidirectional threaded screw 62.

[0045] Specific implementation process: In this application, when welding the H-beam of the light steel structure carport, the web plate is first placed on the positioning base 2, and then the two wing plates are placed on the outside of the web plate respectively. Subsequently, the drive motor 63 runs, causing the bidirectional threaded screw 62 to rotate. When the bidirectional threaded screw 62 rotates, it is driven by the opposite driving forces of the two connecting plates 61. Since the support shell 5 is limited by the welding workbench 1, the two connecting plates 61 drive the two support shells 5 to move in opposite directions.

[0046] The moving port 11 is slidably connected to the extrusion wheel 7, and the positioning base 2 is provided with the mating wheel 8. In this application, the extrusion wheels 7 on the two support shells 5 are staggered, and the position of the mating wheel 8 corresponds to the position of the extrusion wheel 7. This arrangement makes it easy for workers to stably weld the spliced ​​web plate and wing plate. The mating wheel 8 and the extrusion wheel 7 cooperate with each other to position the wing plate and web plate. The welding workbench 1 is provided with a lifting mechanism 9, which supports the multiple mating wheels 8.

[0047] As the support shell 5 moves, it drives the multiple extrusion wheels 7 on it to move toward the wing plate. At the same time, the lifting mechanism 9 operates, causing the mating wheel 8 to move vertically downward until the extrusion wheel 7 moves to the outside of the wing plate. Then the mating wheel 8 moves vertically downward to the inside of the wing plate. That is, the extrusion wheel 7 and the mating wheel 8 are respectively distributed on the inner and outer sides of the wing plate, so as to stably clamp and fix the wing plate to the outside of the web plate.

[0048] Please see Figure 1 and Figure 3 The lifting mechanism 9 includes a first electric push rod 91 and a lifting frame 92. There are two first electric push rods 91, which are respectively fixedly installed at both ends of the welding workbench 1. The lifting frame 92 is installed on the output ends of the two first electric push rods 91. The top of the mating wheel 8 is fixedly connected to a connecting shaft 93, and the connecting shaft 93 is rotatably connected to the bottom of the lifting frame 92. In this application, the length of the connecting shaft 93 is designed to facilitate the worker to hold the welding gun and weld the H-beam. At the same time, when the lifting frame 92 moves upward, it does not affect the placement of the web and the flange.

[0049] The bottom of the mating wheel 8 is provided with a guide cone surface 81. The setting of the guide cone surface 81 can ensure that the mating wheel 8 can move down stably when it moves vertically downward, and at the same time realize the function of cooperating with the extrusion wheel 7. The mating wheel 8 is provided with a guide protrusion on the side near the wing plate.

[0050] A driven gear 931 is installed above the mating wheel 8 and on the connecting shaft 93. A driving gear 71 is fixedly connected to the top of the extrusion wheel 7. When the driving gear 71 moves to the driven gear 931, it meshes with the driven gear 931.

[0051] The welding workbench 1 has a groove 12 located at the joint of the two wing plates. Two pressure sensors 13 are respectively installed in the groove 12, and a first elastic rod 14 and a second elastic rod 15 are respectively installed on the two pressure sensors 13.

[0052] Specific implementation process: In this application, while the mating wheel 8 and the extrusion wheel 7 clamp and fix the wing plate to each other, the mating wheel 8 simultaneously presses down and positions the web plate. Multiple mating wheels 8 and extrusion wheels 7 clamp and fix one wing plate to each other.

[0053] When both the first elastic rod 14 and the second elastic rod 15 at the corresponding groove 12 are compressed, the two pressure sensors 13 are squeezed. Either both pressure sensors 13 detect a signal value, or the pressure sensors 13 at the first elastic rod 14 and the second elastic rod 15 do not detect a signal value. At this time, the rotating mechanism 51 of the support shell 5 operates, causing multiple extrusion rollers 7 to rotate. Simultaneously, the extrusion rollers 7 rotate, driving the driven gear 931 to rotate via the drive gear 71. At this time, the mating wheel 8 rotates in the opposite direction to the extrusion rollers 7, thereby adjusting the position of the wing plate between the mating wheel 8 and the extrusion rollers 7 until one end of the wing plate moves to a spring rod, i.e., a pressure sensor 13 detects a signal value. At this point, precise adjustment of the wing plate is achieved.

[0054] Please see Figures 1 to 3The lifting frame 92 is equipped with a second electric push rod 921 at both ends. The bottom of the second electric push rod 921 is fixedly connected to a push cone 922, which is located on the outside of the bent end of the wing plate.

[0055] The welding workbench 1 is also provided with two bending end positioning mechanisms 10, which are respectively connected to two support shells 5 and are connected to the rotating shaft 3.

[0056] Please see Figures 7 to 14 The bending end positioning mechanism 10 includes a synchronizing element 101, a contact wheel 102, a clamping block 103, a moving element 104, a clamping wheel 105, and a fixed wheel 106. The synchronizing element 101 is installed at the bottom of the rotating shaft 3, and one end of the synchronizing element 101 extends into the welding workbench 1. The synchronizing element 101 is connected to the contact wheel 102. One side of the clamping block 103 is provided with a pushing inclined surface 1031, and the contact wheel 102 contacts the pushing inclined surface 1031.

[0057] The support shell 5 is provided with a support opening 52, and the movable part 104 is provided at the support opening 52. The clamping block 103 is connected to the movable part 104. A fixing rod 107 is installed on the movable part 104. The fixing rod 107 slides through the corresponding movable opening 11. The clamping wheel 105 is located above the movable opening 11 and is fixedly installed on the fixing rod 107. The fixing wheel 106 is located on the web plate, and the fixing wheel 106 and the clamping wheel 105 clamp and position one end of the wing plate when it is bent. The fixing wheel 106 is fixedly installed at the bottom of the lifting frame 92.

[0058] The synchronizing component 101 includes a synchronizing plate 1011, a rotating support rod 1012, a pushing frame 1013, and a limiting component 1014. The synchronizing plate 1011 is connected to the rotating shaft 3 at a position offset from the center of the synchronizing plate 1011. The synchronizing plate 1011 is fixedly installed at the bottom of the rotating shaft 3. The bottom of the synchronizing plate 1011, offset from the rotating shaft 3, is rotatably connected to one end of the rotating support rod 1012 via a rotating shaft. The other end of the rotating support rod 1012 is rotatably connected to the pushing frame 1013 via a rotating shaft. The limiting component 1014 is disposed inside the welding workbench 1 and is used to guide the pushing frame 1013.

[0059] The contact wheel 102 is rotatably connected to one end of the push frame 1013. In this application, when the push frame 1013 is located at the innermost part of the welding workbench 1, the contact wheel 102 is in the position of being disengaged from the clamping block 103, so that the clamping block 103 can be disengaged from the contact wheel position along with the support shell 51, and the movement of the support shell 51 is not affected.

[0060] As a supplementary explanation, the limiting member 1014 includes a limiting track 10141, which is installed inside the welding workbench 1. The pusher 1013 is provided with a limiting slide corresponding to the position of the limiting track 10141, and the pusher 1013 is slidably sleeved on the outside of the limiting track 10141 through the limiting slide.

[0061] The movable component 104 includes a movable block 1041 and a connecting spring 1042. The movable block 1041 slides through the support opening 52. Multiple connecting springs 1042 are provided, and the multiple connecting springs 1042 are respectively installed at both ends of the support opening 52. The other end of the multiple connecting springs 1042 is fixedly connected to the movable block 1041. The clamping block 103 is fixedly installed at the bottom of the movable block 1041, and the fixing rod 107 is fixedly installed on the movable block 1041.

[0062] Specific implementation process: After the automatic adjustment of the positions of the two flanges relative to the web is completed, the rotating shaft 3 operates, causing the bending roller to bend the flanges so that the flanges wrap around the outer side of one end of the web. Simultaneously, the rotating shaft 3 rotates, driving the synchronous plate 1011 to rotate. Conversely, the synchronous plate 1011 rotates, driving the rotating support rod 1012 to rotate. Due to the limiting effect of the push frame 1013 and the limiting track 10141, the push frame 1013 drives the contact wheel 102 to move towards the clamping block 103. When the moving block 1041 is connected by multiple connecting springs 1042, the clamping block 103 drives the moving block 1041 to move relative to the support opening 52. When the moving block 1041 moves, it drives the clamping wheel 105 to move towards the fixed wheel 106. As the bending amplitude of the bending roller on the wing plate increases, the clamping between the clamping wheel 105 and the fixed wheel 106 on the wing plate increases. Furthermore, a buffer sleeve can be provided on the outside of the clamping wheel 105 and the fixed wheel 106 to prevent deformation of the wing plate under the maximum clamping force, thereby protecting the wing plate.

[0063] With this configuration, when the wing plate bends at one end, the clamping force between the clamping wheel 105 and the fixed wheel 106 increases to resist the prestress generated by the wing plate, thereby ensuring that the wing plate is stably bent to one end of the web plate, and realizing high-precision welding of the H-shaped steel beam of the lightweight steel structure photovoltaic carport.

[0064] Example 2

[0065] Please see Figure 11Embodiment 2 further supplements the description of the rotating mechanism 51 in Embodiment 1. Specifically, the rotating mechanism 51 includes a rotating gear 511, a gear chain 512, a guide wheel 513, and a rotating motor 514. Multiple rotating gears 511 are provided, and each rotating gear 511 is fixedly sleeved on the outside of multiple support shafts 4 on the support shell 5. The gear chain 512 is driven between the multiple rotating gears 511. Multiple guide wheels 513 are provided and installed inside the support shell 5, keeping the gear chain 512 taut. The rotating motor 514 is installed at the bottom of the support shell 5 and is used to drive one of the support shafts 4.

[0066] The rotary motor 514 is used to rotate one of the support shafts 4. When the support shaft 4 rotates, the gear chain 512 and multiple rotating gears 511 drive the multiple support shafts 4 to rotate the pressing wheels 7 on them relative to the moving port 11.

[0067] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0068] 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 welding positioning device, comprising a welding workbench (1) and a positioning base frame (2) disposed on the welding workbench (1), wherein the two ends of the bottom of the positioning base frame (2) are rotatably connected to a rotating shaft (3), and the rotating shaft (3) is used to support the bending roller, and the positioning base frame (2) is used to support the web plate, characterized in that: The welding workbench (1) is provided with multiple moving ports (11) on both sides of the positioning base frame (2). The moving ports (11) are provided with support shafts (4). The welding workbench (1) is provided with two support shells (5), and the two support shells (5) support the multiple support shafts (4) respectively. The support shells (5) are provided with a rotating mechanism (51), and the rotating mechanism (51) is used to drive the multiple support shafts (4). The welding workbench (1) is equipped with a connecting mechanism (6), which is used to connect the two support shells (5); The moving port (11) is slidably connected to an extrusion wheel (7), and the positioning base (2) is provided with a mating wheel (8), and the mating wheel (8) and the extrusion wheel (7) cooperate with each other to position the wing plate and the web plate. The welding workbench (1) is provided with a lifting mechanism (9), and the lifting mechanism (9) supports multiple mating wheels (8). The welding workbench (1) is also provided with two bending end positioning mechanisms (10), which are respectively connected to two support shells (5) and the bending end positioning mechanisms (10) are connected to the rotating shaft (3). The bending end positioning mechanism (10) includes a synchronizing element (101), a contact wheel (102), a clamping block (103), a moving element (104), a clamping wheel (105), and a fixed wheel (106). The synchronizing element (101) is installed at the bottom of the rotating shaft (3), and one end of the synchronizing element (101) extends into the welding workbench (1). The synchronizing element (101) is connected to the contact wheel (102). One side of the clamping block (103) is provided with a pushing inclined surface (1031), and the contact wheel (102) contacts the pushing inclined surface (1031). The support shell (5) is provided with a support opening (52), and the moving part (104) is located at the support opening (52). The clamping block (103) is connected to the moving part (104). A fixing rod (107) is installed on the moving part (104). The fixing rod (107) slides through the corresponding moving opening (11). The clamping wheel (105) is located above the moving opening (11), and the clamping wheel (105) is fixedly installed on the fixing rod (107). The fixing wheel (106) is located on the web plate, and the fixing wheel (106) and the clamping wheel (105) clamp and position one end of the wing plate when it is bent. The fixing wheel (106) is fixedly installed at the bottom of the lifting frame (92).

2. The steel structure welding positioning device according to claim 1, characterized in that: The connecting mechanism (6) includes a connecting plate (61), a bidirectional threaded screw (62), and a drive motor (63). There are two connecting plates (61), which are fixedly installed at the bottom of two support shells (5). The connecting plates (61) are provided with threaded holes, and the bidirectional threaded screw (62) is threadedly connected to the two connecting plates (61) respectively. The drive motor (63) is installed inside the welding workbench (1) and is used to drive the bidirectional threaded screw (62).

3. The steel structure welding positioning device according to claim 1, characterized in that: The lifting mechanism (9) includes a first electric push rod (91) and a lifting frame (92). There are two first electric push rods (91), which are fixedly installed at both ends of the welding workbench (1). The lifting frame (92) is installed on the output ends of the two first electric push rods (91). The top of the mating wheel (8) is fixedly connected to a connecting shaft (93), and the connecting shaft (93) is rotatably connected to the bottom of the lifting frame (92).

4. A steel structure welding positioning device according to claim 3, characterized in that: The bottom of the mating wheel (8) is provided with a guide cone surface (81), and the mating wheel (8) is provided with a guide protrusion on the side near the wing plate.

5. A steel structure welding positioning device according to claim 3, characterized in that: A driven gear (931) is installed above the mating wheel (8) and on the connecting shaft (93). A driving gear (71) is fixedly connected to the top of the extrusion wheel (7). When the driving gear (71) moves to the driven gear (931), it meshes with the driven gear (931).

6. A steel structure welding positioning device according to claim 1, characterized in that: The welding workbench (1) has a groove (12) located at the joint of the two wing plates. Two pressure sensors (13) are respectively installed in the groove (12). A first elastic rod (14) and a second elastic rod (15) are respectively installed on the two pressure sensors (13).

7. A steel structure welding positioning device according to claim 3, characterized in that: The lifting frame (92) is equipped with a second electric push rod (921) at both ends. The bottom of the second electric push rod (921) is fixedly connected to a push cone (922), which is located on the outside of the bent end of the wing plate.

8. A steel structure welding positioning device according to claim 1, characterized in that: The synchronizing component (101) includes a synchronizing plate (1011), a rotating support rod (1012), a pushing frame (1013), and a limiting component (1014). The synchronizing plate (1011) is fixedly installed at the bottom of the rotating shaft (3). The bottom of the synchronizing plate (1011) and a position offset from the rotating shaft (3) are rotatably connected to one end of the rotating support rod (1012) via a rotating shaft. The other end of the rotating support rod (1012) is rotatably connected to the pushing frame (1013) via a rotating shaft. The limiting component (1014) is set inside the welding workbench (1) and is used to guide the pushing frame (1013). The contact wheel (102) is rotatably connected to one end of the push frame (1013).

9. A steel structure welding positioning device according to claim 8, characterized in that: The movable component (104) includes a movable block (1041) and a connecting spring (1042). The movable block (1041) slides through the support opening (52). Multiple connecting springs (1042) are provided. The multiple connecting springs (1042) are respectively installed at both ends of the support opening (52), and the other end of the multiple connecting springs (1042) is fixedly connected to the movable block (1041). The clamping block (103) is fixedly installed at the bottom of the movable block (1041), and the fixing rod (107) is fixedly installed on the movable block (1041).

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