A steel box girder splicing frame welding device and welding method thereof

Abstract

The present invention discloses a splicing frame welding device for a steel box girder and a welding method thereof, which relates to the field of welding equipment, and includes a welding host, wherein a plurality of slots are provided on both sides of the welding host, plugs are inserted into the slots, and cables are connected to the plugs. It should be noted that in an embodiment of the present invention, when the cable is pulled, the buffer spring is provided to play a buffering and reminding role, and when the pulling force is large, the stabilizing bar drives the counterweight to rotate and unfold, thereby increasing the ground contact area for the welding host, ensuring the stability of the welding host, and preventing the welding host from falling. Even if the welding host falls, the separation partition can drive multiple plugs to disengage from multiple slots, preventing the welding host from being electrified when it falls; in addition, the heat dissipation holes are closed by the closing plate, and the slots are closed by the isolation rotating plate, so as to avoid problems such as water and dust entering the interior when the welding host falls, thereby ensuring the safety of the welding host.

Description

Technical Field

[0001] The present invention relates to the technical field of welding equipment, and in particular to a splicing frame welding device for a steel box girder and a welding method thereof. Background Art

[0002] A scaffold is a formwork, a scaffolding primarily responsible for bearing weight. It is a specialized process equipment designed to facilitate the assembly and welding of mechanical equipment. It is widely used in formwork engineering, steel structure installation, and bridge engineering. Unlike commonly used single- and double-row scaffolding, the design of the scaffold varies significantly due to the significant differences in the supported structure and weight. Different equipment and processes require different scaffolding styles. During bridge construction, the production of steel box girders is particularly dependent on the support of the scaffold, which is welded from various steel materials during the manufacturing process.

[0003] It should be noted that when welding the tire frame, due to the different sizes of various steels and the complex structure after welding, the welding host is often placed in a high place. During welding, the welding cable will be pulled as the worker moves the welding gun. This causes the welding host to be directly pulled down due to negligence during the specific welding operation, causing the welding host to fall to the ground. In addition, the outside of the welding host is often provided with heat dissipation holes for heat dissipation, and the environment for tire frame construction cannot be guaranteed. Therefore, once the welding host falls to the ground, it is not only easy to cause damage to the welding host, but also cause water or a large amount of dust to enter the welding host. Summary of the Invention

[0004] The object of the present invention is to provide a steel box girder splicing frame welding device and a welding method thereof to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A steel box girder splicing frame welding device includes a welding main unit, a plurality of slots are provided on both sides of the welding main unit, plugs are inserted into the slots, and cables are connected to the plugs. A plurality of heat dissipation holes are provided on both sides of the welding main unit;

[0007] The welding host is installed with an anti-pull stabilization structure, which is used to actively stabilize the welding host; the anti-pull stabilization structure includes a mounting box and four stabilization bars, the mounting box is mounted on one side of the welding host, a telescopic pull plate is movably mounted in the mounting box, a clamping plate is mounted on the telescopic pull plate, and a buffer spring for pulling back is installed between the mounting box and the telescopic pull plate, multiple cables are clamped on the clamping plate, the four stabilization bars are rotatably mounted on both sides of the welding host, and a counterweight is mounted on one side of the stabilization bar;

[0008] The device further comprises an active separation structure, which is mounted on both sides of the welding host and is used to separate the plurality of plugs from the welding host; the active separation structure comprises two separation partitions, which are movably mounted on both sides of the welding host, and the plurality of plugs are respectively clamped on the two separation partitions, and the separation partitions move to separate the plugs from the welding host;

[0009] The welding host is also equipped with a synchronous isolation protection structure, which is used to seal and protect the slot and the heat dissipation hole; the synchronous isolation protection structure includes two isolation rotating plates and two closing plates, and the two isolation rotating plates and the two closing plates are movably installed on both sides of the welding host respectively, the isolation rotating plate is used to seal the slot, and the closing plate is used to seal the heat dissipation hole.

[0010] Furthermore, in a preferred embodiment of the present invention, the anti-pull stabilizing structure further includes four mounting brackets, the four mounting brackets being respectively mounted on both sides of the welding host, the four stabilizing bars being respectively rotatably mounted on the four mounting brackets, and a pushing bracket being movably mounted on the mounting brackets, the pushing brackets being movable to push the stabilizing bars to rotate;

[0011] A driving frame is movably mounted on the four mounting frames, and an adapter plate is rotatably mounted between the mounting frames and the driving frame.

[0012] Furthermore, in a preferred embodiment of the present invention, follower rods are installed on both sides of the telescopic pull plate, and extrusion push blocks are installed on both sides of the two follower rods and the driving frame, and one side of the extrusion push block is horizontally arranged;

[0013] A lifting slot is provided on the mounting frame, a lifting frame is movably installed in the lifting slot, and the lifting frame is installed on the driving frame.

[0014] Furthermore, in a preferred embodiment of the present invention, a mounting shaft is installed in the mounting frame, and the stabilizing bar is rotatably mounted on the mounting shaft;

[0015] The stabilizing rod is provided with a mounting slot, and the stabilizing rod is rotatably mounted on the mounting shaft through the mounting slot. A rebound torsion spring is mounted on the mounting shaft, and the other end of the rebound torsion spring is mounted on the inner wall of the mounting slot.

[0016] Furthermore, in a preferred embodiment of the present invention, a rotating push rod is movably mounted on both sides of the separation partition, and the rotating push rod is rotatably mounted on one side of the welding host;

[0017] A push-pull shaft is rotatably mounted on each of the two rotating push rods, and push-pull grooves are provided on both sides of the separation partition. The two push-pull shafts are movably mounted in the two push-pull grooves respectively.

[0018] Two transverse rods are installed on one side of the separation partition, and the transverse rods are movably installed on the welding host.

[0019] Furthermore, in a preferred embodiment of the present invention, a linkage frame is movably mounted on the bottom side of the welding host, and the four rotating push rods are movably mounted on the linkage frame;

[0020] Four linkage shafts are rotatably mounted on the linkage frame, and the four linkage shafts are movably mounted on the four rotating push rods respectively.

[0021] Furthermore, in a preferred embodiment of the present invention, a compression sleeve is installed on the linkage frame, a limiting seat is installed on the bottom side of the welding host, and the compression sleeve is movably sleeved on the limiting seat;

[0022] An expansion spring is installed on the bottom side of the limiting seat, and the other end of the expansion spring is installed on the compression sleeve.

[0023] Furthermore, in a preferred embodiment of the present invention, support shafts are installed on both sides of the welding host, and the two isolation rotating plates are rotatably installed on the two support shafts respectively;

[0024] A torsion groove is provided on the isolation rotating plate, a return torsion spring is installed on the inner wall of the torsion groove, and the other end of the return torsion spring is installed on the support shaft.

[0025] Furthermore, in a preferred embodiment of the present invention, the closing plate is mounted on the linkage frame, and a plurality of ventilation holes are provided on the closing plate, and the ventilation holes coincide with the heat dissipation holes for dissipating heat for the welding host;

[0026] The closing plate is provided with a push rod, and the closing plate moves and rotates against the isolation rotating plate through the push rod.

[0027] A method for welding a spliced jig of a steel box girder is performed according to the above-mentioned spliced jig welding device, comprising the following steps:

[0028] S1. When the cable is pulled, the clamping plate moves, and the clamping plate moves in the installation box through the telescopic pull plate, and drives the buffer spring to move, and the cable is buffered by the rebound force of the buffer spring;

[0029] S2. When the pulling force is large, the telescopic pull plate is driven to move excessively. The telescopic pull plate drives the two extrusion push blocks to move through the two follower rods. The two extrusion push blocks squeeze the other two extrusion push blocks to move, driving the driving frame to move downward. The driving frame moves through the four adapter plates to drive the four push frames to move, so that the push frames push the stabilizing rod to rotate, and the stabilizing rod drives the counterweight block to rotate and expand, actively stabilizing the welding host.

[0030] S3. When the welding host falls, the compression sleeve is no longer squeezed, and under the expansion force of the expansion spring, the compression sleeve is driven to move. The movement of the compression sleeve drives the four linkage shafts to move through the linkage frame, and the linkage shaft drives the rotating push rod to rotate. The rotating push rod drives the separation partition to move through the push-pull shaft. The movement of the separation partition drives multiple plugs to disengage from multiple slots.

[0031] S4. When the welding host falls and the linkage frame moves, the linkage frame drives the closing plate to move, so that the ventilation holes and the heat dissipation holes are staggered, thereby closing the heat dissipation holes. The movement of the closing plate drives the top opening rod to separate from the isolation rotating plate. Under the rebound force of the reset torsion spring, the isolation rotating plate rotates and closes the slot.

[0032] The beneficial effects of the steel box girder splicing frame welding device and the welding method thereof proposed by the present invention are:

[0033] In the present invention, through the setting of the anti-pulling stabilizing structure, when the cable is pulled, the clamping plate is driven to move, and the clamping plate moves in the installation box through the telescopic pull plate, and drives the buffer spring to move. When the pulling force is not large, it can play a buffering and reminder role through the rebound force of the buffer spring. However, when the pulling force is large, the telescopic pull plate moves a large distance, which will cause the stabilizing rod to drive the counterweight block to rotate and expand, thereby increasing the ground contact area of the welding host and supporting the welding host at the same time. Moreover, under the weight of the four counterweight blocks, the welding host is further stabilized to prevent the welding host from falling.

[0034] Furthermore, in the present invention, through the setting of the active separation structure, when the welding host is accidentally knocked over or the pulling force is too large, causing the welding host to fall, the compression sleeve is no longer squeezed, and the separation partition drives multiple plugs to disengage from multiple slots, thereby avoiding the welding host being electrified when it falls, and then causing a short circuit or even a fire.

[0035] Furthermore, in the present invention, through the setting of a synchronous isolation protection structure, when the welding host falls and the linkage frame moves, the linkage frame drives the closing plate to move, so that the ventilation holes and the heat dissipation holes are staggered, thereby achieving the closure of the heat dissipation holes. At the same time, the movement of the closing plate drives the top opening rod to disengage from the isolation rotating plate. At this time, under the rebound force of the reset torsion spring, the isolation rotating plate rotates and closes the slot, avoiding problems such as water and dust entering the internal when the welding host falls, thereby ensuring the safety of the welding host. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of the front structure of a steel box girder splicing frame welding device provided by an embodiment of the present invention;

[0037] Figure 2 A schematic diagram of the back structure of a steel box girder splicing cradle welding device provided by an embodiment of the present invention;

[0038] Figure 3 A schematic diagram of the partial structure of the connection between the installation box and the separation partition and other structures of a splicing cradle welding device for a steel box girder provided by an embodiment of the present invention;

[0039] Figure 4 A schematic structural diagram of the connection between an installation box and a telescopic pull plate and other structures of a splicing cradle welding device for a steel box girder provided by an embodiment of the present invention;

[0040] Figure 5 A schematic diagram of the partial structure of the connection between the mounting frame and the stabilizer bar and other structures of a steel box girder splicing cradle welding device provided by an embodiment of the present invention;

[0041] Figure 6 A schematic partial cross-sectional view of the connection between a mounting frame and a stabilizer bar and other structures of a steel box girder splicing cradle welding device provided by an embodiment of the present invention;

[0042] Figure 7 A schematic diagram of a partial structure of a steel box girder splicing cradle welding device provided by an embodiment of the present invention, showing a connection between a separation partition plate and an isolation turn plate;

[0043] Figure 8 A bottom-up structural schematic diagram of a steel box girder splicing cradle welding device provided in an embodiment of the present invention;

[0044] Figure 9 A schematic partial cross-sectional view of the connection between a compression sleeve and a restraining seat and other structures of a steel box girder splicing cradle welding device provided by an embodiment of the present invention;

[0045] Figure 10A schematic cross-sectional view of the connection between an isolation rotating plate and a support shaft and other structures of a splicing cradle welding device for a steel box girder provided in an embodiment of the present invention.

[0046] Figure: 1 - welding host; 2 - plug; 3 - slot; 4 - heat dissipation hole; 5 - cable; 6 - anti-pull stabilizing structure; 601 - installation box; 602 - telescopic pull plate; 603 - clamping plate; 604 - buffer spring; 605 - installation frame; 606 - stabilizing rod; 607 - counterweight; 608 - push frame; 609 - drive frame; 610 - adapter plate; 611 - installation shaft; 612 - follower rod; 613 - extrusion push block; 614 - lifting frame; 615 - lifting slot; 616 - installation slot ;617-rebound torsion spring;7-active separation structure;701-separation partition;702-transverse rod;703-rotating push rod;704-push-pull shaft;705-push-pull groove;706-linkage frame;707-linkage shaft;708-compression sleeve;709-limiting seat;710-opening spring;8-synchronous isolation protection structure;801-isolation rotating plate;802-support shaft;803-torsion groove;804-reset torsion spring;805-top rod;806-closing plate;807-ventilation hole. DETAILED DESCRIPTION

[0047] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0048] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0049] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0050] In addition, in the description of the present invention, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is typically placed when in use. These terms are used solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0051] Furthermore, the terms "horizontal," "vertical," and "perpendicular" do not necessarily imply that a component must be absolutely vertical, but rather that it can be slightly tilted. For example, "vertical" simply means that its direction is more vertical than "horizontal," and does not mean that the structure must be completely vertical, but rather that it can be slightly tilted.

[0052] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0053] Please refer to the attached manual Figure 1 -Attached Figure 10 An embodiment of the present invention provides a steel box girder splicing frame welding device, which includes a welding host 1, a plurality of slots 3 are provided on both sides of the welding host 1, a plug 2 is inserted into the slot 3, a cable 5 is connected to the plug 2, and a plurality of heat dissipation holes 4 are provided on both sides of the welding host 1.

[0054] Furthermore, an embodiment of the present invention provides a splicing frame welding device for a steel box girder, wherein an anti-pull stabilization structure 6 is installed on the welding main unit 1, and the anti-pull stabilization structure 6 is used to actively stabilize the welding main unit 1; the anti-pull stabilization structure 6 includes an installation box 601 and four stabilization rods 606, the installation box 601 is installed on one side of the welding main unit 1, a telescopic pull plate 602 is movably installed in the installation box 601, a clamping plate 603 is installed on the telescopic pull plate 602, and a buffer spring 604 for pulling back is installed between the installation box 601 and the telescopic pull plate 602, multiple cables 5 are clamped on the clamping plate 603, and four stabilization rods 606 are rotatably installed on both sides of the welding main unit 1, and a counterweight block 607 is installed on one side of the stabilization rod 606. It should be noted that, in the embodiment of the present invention, when the cable is pulled, the clamping plate 603 is driven to move, and the clamping plate 603 moves in the installation box 601 through the telescopic pull plate 602, and drives the buffer spring 604 to move. When the pulling force is not large, it can play a buffering and reminder role under the rebound force of the buffer spring 604. However, when the pulling force is large, the telescopic pull plate 602 moves a large distance, so that the stabilizing rod 606 drives the counterweight block 607 to rotate and expand, thereby increasing the ground contact area of the welding host 1, and supporting the welding host 1 at the same time, and further stabilizes the welding host 1 under the weight of the four counterweight blocks 607 to prevent the welding host 1 from falling.

[0055] More specifically, in an embodiment of the present invention, an active separation structure 7 is further included. The active separation structure 7 is installed on both sides of the welding host 1. The active separation structure 7 is used to separate the multiple plugs 2 from the welding host 1. The active separation structure 7 includes two separation partitions 701. The two separation partitions 701 are movably installed on both sides of the welding host 1. The multiple plugs 2 are respectively stuck on the two separation partitions 701. The separation partitions 701 move to separate the plugs 2 from the welding host 1. It should be noted that in an embodiment of the present invention, when the welding host 1 is accidentally knocked over or the pulling force is too large, causing the welding host 1 to fall, the separation partition 701 moves to drive the multiple plugs 2 out of the multiple slots 3, thereby avoiding the problem of short circuit or even fire when the welding host 1 falls.

[0056] More specifically, the welding host 1 is also equipped with a synchronous isolation protection structure 8, which is used to seal and protect the slot 3 and the heat dissipation hole 4. The synchronous isolation protection structure 8 includes two isolation rotating plates 801 and two sealing plates 806, which are movably mounted on both sides of the welding host 1. The isolation rotating plates 801 are used to seal the slot 3, and the sealing plates 806 are used to seal the heat dissipation hole 4. It should be noted that in the embodiment of the present invention, when the welding host 1 falls and the linkage frame 706 moves, the linkage frame 706 drives the sealing plates 806 to move, so that the ventilation holes 807 are staggered with the heat dissipation hole 4, thereby sealing the heat dissipation hole 4. At the same time, the movement of the sealing plates 806 drives the ejection rod 805 to disengage from the isolation rotating plates 801. At this time, under the rebound force of the return torsion spring 804, the isolation rotating plates 801 rotate and seal the slot 3, thereby preventing problems such as water and dust from entering the welding host 1 when it falls.

[0057] Please refer to the attached manual Figure 2 -Attached Figure 6 Furthermore, in an embodiment of the present invention, a steel box girder splicing cradle welding device is provided, wherein the anti-pull stabilizing structure 6 further includes four mounting frames 605, the four mounting frames 605 being respectively mounted on both sides of the welding main unit 1, four stabilizing rods 606 being rotatably mounted on the four mounting frames 605, and a pushing frame 608 being movably mounted on the mounting frames 605, the pushing frame 608 being movable to push the stabilizing rods 606 to rotate;

[0058] In addition, a driving frame 609 is movably mounted on the four mounting frames 605, and an adapter plate 610 is rotatably mounted between the mounting frames 605 and the driving frames 609. It should be noted that in the embodiment of the present invention, when the telescopic pull plate 602 moves excessively, the two extrusion push blocks 613 are driven to move by the two follower rods 612, and the two extrusion push blocks 613 squeeze the other two extrusion push blocks 613 to move, thereby driving the driving frame 609 to move downward, and the driving frame 609 moves to drive the four pushing frames 608 to move through the four adapter plates 610, so that the pushing frames 608 push the stabilizing rod 606 to rotate, and the stabilizing rod 606 drives the counterweight block 607 to rotate and unfold, thereby increasing the ground contact area of the welding host 1 and supporting the welding host 1 at the same time. Moreover, the weight of the four counterweight blocks 607 further stabilizes the welding host 1 to prevent it from falling.

[0059] More specifically, in the embodiment of the present invention, follower rods 612 are mounted on both sides of the telescopic pull plate 602. Extrusion push blocks 613 are mounted on both sides of the two follower rods 612 and the drive frame 609, with one side of the extrusion push blocks 613 being arranged horizontally. Furthermore, a lifting slot 615 is provided on the mounting frame 605, within which a lifting frame 614 is movably mounted, and the lifting frame 614 is mounted on the drive frame 609. It should be noted that in the embodiment of the present invention, when the telescopic pull plate 602 excessively moves, the two follower rods 612 drive the two extrusion push blocks 613 to move, and the two extrusion push blocks 613 squeeze the other two extrusion push blocks 613 to move, thereby driving the drive frame 609 downward. The drive frame 609 is then moved vertically within the lifting slot 615 via the lifting frame 614.

[0060] Please continue to refer to the instructions attached Figure 2 -Attached Figure 6 More specifically, in the embodiment of the present invention, a mounting shaft 611 is installed in the mounting frame 605, and the stabilizing rod 606 is rotatably mounted on the mounting shaft 611. In addition, a mounting slot 616 is provided on the stabilizing rod 606, and the stabilizing rod 606 is rotatably mounted on the mounting shaft 611 through the mounting slot 616. A rebound torsion spring 617 is installed on the mounting shaft 611, and the other end of the rebound torsion spring 617 is mounted on the inner wall of the mounting slot 616. It should be noted that in the embodiment of the present invention, when the welding host 1 is stably placed, the compression sleeve 708 is squeezed and drives the linkage frame 706 to move, so that the linkage frame 706 no longer drives the push frame 608 to move through the adapter plate 610. At this time, under the rebound force of the rebound torsion spring 617, the rebound torsion spring 617 drives the stabilizing rod 606 to return to its original position.

[0061] For further information, please refer to the attached manual. Figure 3 and Figure 7-Figure 9 In an embodiment of the present invention, a steel box girder splicing cradle welding device is provided. Rotating push rods 703 are movably mounted on both sides of a separation partition 701. The rotating push rods 703 are rotatably mounted on one side of a welding main body 1. Push-pull shafts 704 are rotatably mounted on the two rotating push rods 703. Push-pull grooves 705 are opened on both sides of the separation partition 701. The two push-pull shafts 704 are movably mounted in the two push-pull grooves 705 respectively.

[0062] In addition, two transverse rods 702 are installed on one side of the separation partition 701, and the transverse rods 702 are movably installed on the welding host 1. It should be noted that in the embodiment of the present invention, when the rotating push rod 703 rotates, it drives the separation partition 701 to move through the push-pull shaft 704, and the push-pull shaft 704 slides in the push-pull groove 705.

[0063] More specifically, in the embodiment of the present invention, a linkage frame 706 is movably mounted on the bottom side of the welding main machine 1, and the four rotating push rods 703 are movably mounted on the linkage frame 706. Four linkage shafts 707 are rotatably mounted on the linkage frame 706, and the four linkage shafts 707 are movably mounted on the four rotating push rods 703. It should be noted that in the embodiment of the present invention, when the linkage frame 706 moves, it drives the four linkage shafts 707 to move, and the linkage shafts 707 drive the rotating push rods 703 to rotate. At the same time, the linkage shafts 707 slide within the rotating push rods 703, thereby driving the separation partition 701 to move.

[0064] Please refer to the instruction manual Figure 3 -Attached Figure 7 More specifically, in the embodiment of the present invention, a compression sleeve 708 is installed on the linkage frame 706, and a limiting seat 709 is installed on the bottom side of the welding host 1. The compression sleeve 708 is movably connected to the limiting seat 709; an expansion spring 710 is installed on the bottom side of the limiting seat 709, and the other end of the expansion spring 710 is installed on the compression sleeve 708. It should be noted that in the embodiment of the present invention, when the welding host 1 falls, the compression sleeve 708 is no longer squeezed, and under the expansion force of the expansion spring 710, the compression sleeve 708 is driven to move. The movement of the compression sleeve 708 drives the four rotating push rods 703 to rotate through the linkage frame 706, and then drives the two separation partitions 701 to move, so that the separation partitions 701 can drive the multiple plugs 2 to disengage from the multiple slots 3.

[0065] Please refer to the attached manual Figure 3 、 Figure 7 and Figure 10 , further specifically, in the embodiment of the present invention, support shafts 802 are installed on both sides of the welding host 1, and two isolation rotating plates 801 are rotatably installed on the two support shafts 802 respectively;

[0066] In addition, the isolation rotating plate 801 is provided with a torsion groove 803, and a return torsion spring 804 is mounted on the inner wall of the torsion groove 803. The other end of the return torsion spring 804 is mounted on the support shaft 802. It should be noted that in the embodiment of the present invention, when the closing plate 806 moves so that the push-up rod 805 no longer presses against the isolation rotating plate 801, the resilience of the return torsion spring 804 causes the isolation rotating plate 801 to rotate and close the slot 3, thereby sealing the welding host 1.

[0067] More specifically, in this embodiment of the present invention, a sealing plate 806 is mounted on the linkage frame 706. A plurality of ventilation holes 807 are formed in the sealing plate 806. The ventilation holes 807 overlap with the heat dissipation holes 4 to dissipate heat from the welding host 1. Furthermore, a push-up rod 805 is mounted on the sealing plate 806. The push-up rod 805 allows the sealing plate 806 to rotate against the isolation rotating plate 801. It should be noted that in this embodiment of the present invention, when the sealing plate 806 moves, the ventilation holes 807 intersect with the heat dissipation holes 4, thereby sealing the heat dissipation holes 4 and thereby sealing the welding host 1.

[0068] In summary, the working principle of the splicing jig welding device for steel box girders provided by the embodiment of the present invention, that is, the welding method using the splicing jig welding device for steel box girders according to the embodiment of the present invention, is as follows:

[0069] When the cable is pulled, the clamping plate 603 is driven to move, and the clamping plate 603 moves in the installation box 601 through the telescopic pull plate 602, and drives the buffer spring 604 to move. When the pulling force is not strong, the buffer spring 604 can play a role of buffering and reminding. However, when the pulling force is large, the telescopic pull plate 602 moves a large distance, and the telescopic pull plate 602 drives the two extrusion push blocks 613 to move through the two follower rods 612. The two extrusion push blocks 613 squeeze the other two extrusion push blocks 613 to move, thereby driving the driving frame 609 to move downward, driving The frame 609 moves vertically in the lifting slot 615 via the lifting frame 614. The driving frame 609 moves through the four adapter plates 610 to drive the four pushing frames 608 to move, so that the pushing frames 608 push the stabilizing rod 606 to rotate. The stabilizing rod 606 rotates on the mounting shaft 611 and drives the rebound torsion spring 617 to be stressed. The stabilizing rod 606 drives the counterweight 607 to rotate and expand, thereby increasing the ground contact area of the welding host 1 and supporting the welding host 1. The weight of the four counterweights 607 further stabilizes the welding host 1 to prevent it from falling.

[0070] In addition, if the welding host 1 is accidentally knocked over or the pulling force is too great, causing the welding host 1 to fall, the compression sleeve 708 is no longer squeezed, and under the expansion force of the expansion spring 710, the compression sleeve 708 is driven to move, and the compression sleeve 708 moves through the linkage frame 706 to drive the four linkage shafts 707 to move, and the linkage shaft 707 drives the rotating push rod 703 to rotate. At the same time, the linkage shaft 707 slides in the rotating push rod 703, and the rotating push rod 703 drives the separation partition 701 to move through the push-pull shaft 704. The push-pull shaft 704 slides in the push-pull groove 705. The movement of the separation partition 701 drives the multiple plugs 2 to disengage from the multiple slots 3, thereby avoiding the problem of short circuit or even fire when the welding host 1 falls.

[0071] Furthermore, when the welding host 1 falls and the linkage frame 706 moves, the linkage frame 706 drives the closing plate 806 to move, so that the ventilation holes 807 are staggered with the heat dissipation holes 4, thereby closing the heat dissipation holes 4. At the same time, the closing plate 806 moves to drive the top rod 805 to disengage from the isolation rotating plate 801. At this time, under the rebound force of the reset torsion spring 804, the isolation rotating plate 801 rotates and closes the slot 3, avoiding problems such as water and dust entering the interior when the welding host 1 falls.

[0072] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A method for welding a spliced jig of a steel box girder, which is performed using a spliced jig welding device for a steel box girder, and is characterized in that: The steel box girder splicing frame welding equipment includes a welding host, a plurality of slots are provided on both sides of the welding host, plugs are inserted into the slots, and cables are connected to the plugs, and a plurality of heat dissipation holes are provided on both sides of the welding host; The welding host is installed with an anti-pull stabilization structure, which is used to actively stabilize the welding host; the anti-pull stabilization structure includes a mounting box and four stabilization bars, the mounting box is mounted on one side of the welding host, a telescopic pull plate is movably mounted in the mounting box, a clamping plate is mounted on the telescopic pull plate, and a buffer spring for pulling back is installed between the mounting box and the telescopic pull plate, multiple cables are clamped on the clamping plate, the four stabilization bars are rotatably mounted on both sides of the welding host, and a counterweight is mounted on one side of the stabilization bar; It also includes an active separation structure, which is installed on both sides of the welding host and is used to separate the plurality of plugs from the welding host; The active separation structure includes two separation partitions, which are movably mounted on both sides of the welding host. The plurality of plugs are respectively clamped on the two separation partitions. The separation partitions move to separate the plugs from the welding host. The welding host is also equipped with a synchronous isolation protection structure, which is used to seal and protect the slot and the heat dissipation hole; the synchronous isolation protection structure includes two isolation rotating plates and two sealing plates, which are movably mounted on both sides of the welding host, respectively. The isolation rotating plates are used to seal the slot, and the sealing plates are used to seal the heat dissipation hole; The anti-pull stabilization structure further includes four mounting brackets, the four mounting brackets are respectively mounted on both sides of the welding host, the four stabilizing bars are respectively rotatably mounted on the four mounting brackets, a pushing bracket is movably mounted on the mounting bracket, and the pushing bracket is moved to push the stabilizing bar to rotate; a driving bracket is movably mounted on the four mounting brackets, and an adapter plate is rotatably mounted between the mounting bracket and the driving bracket; Both sides of the telescopic pull plate are equipped with follower rods, and both sides of the two follower rods and the driving frame are equipped with extrusion push blocks, and one side of the extrusion push blocks is arranged horizontally; a lifting slot is opened on the mounting frame, and a lifting frame is movably installed in the lifting slot, and the lifting frame is installed on the driving frame; A mounting shaft is installed in the mounting frame, and the stabilizing bar is rotatably mounted on the mounting shaft; a mounting slot is provided on the stabilizing bar, and the stabilizing bar is rotatably mounted on the mounting shaft through the mounting slot; a rebound torsion spring is installed on the mounting shaft, and the other end of the rebound torsion spring is mounted on the inner wall of the mounting slot; Both sides of the separation partition are movably mounted with rotating push rods, and the rotating push rods are rotatably mounted on one side of the welding main unit; push-pull shafts are rotatably mounted on the two rotating push rods, and push-pull grooves are provided on both sides of the separation partition, and the two push-pull shafts are movably mounted in the two push-pull grooves respectively; two transverse rods are installed on one side of the separation partition, and the transverse rods are movably mounted on the welding main unit; A linkage frame is movably mounted on the bottom side of the welding main machine, and the four rotating push rods are movably mounted on the linkage frame; four linkage shafts are rotatably mounted on the linkage frame, and the four linkage shafts are movably mounted on the four rotating push rods respectively; A compression sleeve is installed on the linkage frame, a limiting seat is installed on the bottom side of the welding host, and the compression sleeve is movably connected to the limiting seat; an expansion spring is installed on the bottom side of the limiting seat, and the other end of the expansion spring is installed on the compression sleeve; Support shafts are installed on both sides of the welding host, and the two isolation rotating plates are rotatably installed on the two support shafts respectively; a torsion groove is opened on the isolation rotating plate, and a reset torsion spring is installed on the inner wall of the torsion groove, and the other end of the reset torsion spring is installed on the support shaft; The closing plate is mounted on the linkage frame, and a plurality of ventilation holes are provided on the closing plate, and the ventilation holes coincide with the heat dissipation holes, and are used to dissipate heat for the welding host; a push rod is mounted on the closing plate, and the closing plate moves and rotates against the isolation rotating plate through the push rod; The splicing cradle welding method of the steel box girder comprises the following steps: S1. When the cable is pulled, the clamping plate moves, and the clamping plate moves in the installation box through the telescopic pull plate, and drives the buffer spring to move, and the cable is buffered by the rebound force of the buffer spring; S2. When the pulling force is large, the telescopic pull plate is driven to move excessively. The telescopic pull plate drives the two extrusion push blocks to move through the two follower rods. The two extrusion push blocks squeeze the other two extrusion push blocks to move, driving the driving frame to move downward. The driving frame moves through the four adapter plates to drive the four push frames to move, so that the push frames push the stabilizing rod to rotate, and the stabilizing rod drives the counterweight block to rotate and expand, actively stabilizing the welding host. S3. When the welding host falls, the compression sleeve is no longer squeezed, and under the expansion force of the expansion spring, the compression sleeve is driven to move. The movement of the compression sleeve drives the four linkage shafts to move through the linkage frame, and the linkage shaft drives the rotating push rod to rotate. The rotating push rod drives the separation partition to move through the push-pull shaft. The movement of the separation partition drives multiple plugs to disengage from multiple slots. S4. When the welding host falls and the linkage frame moves, the linkage frame drives the closing plate to move, so that the ventilation holes and the heat dissipation holes are staggered, thereby closing the heat dissipation holes. The movement of the closing plate drives the top opening rod to separate from the isolation rotating plate. Under the rebound force of the reset torsion spring, the isolation rotating plate rotates and closes the slot.

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