Bridge welding device and bridge welding method

Abstract

The present invention discloses a bridge welding device and a bridge welding method, which relate to the technical field of bridge welding. The following scheme is proposed, including a machine body and an electromagnet fixedly connected to the bottom of the machine body, and also including: a rotating swing adjustment mechanism, the rotating swing adjustment mechanism is installed inside the machine body, and is used to adjust the welding angle of the equipment, the rotating swing adjustment mechanism includes a connecting rod rotatably connected to the inside of the machine body and a worm gear fixedly connected to one side of the connecting rod; a moving mechanism, the moving mechanism is installed at one end of the connecting rod, and is used to automatically move the welding equipment for welding. The present invention can not only adjust the equipment to different welding bevel angles through the rotating swing adjustment mechanism, but also perform arc welding on the bridge through the angle flipping mechanism, and can also perform straight-line automatic long-distance arc welding, effectively ensuring the effect and efficiency of automatic and rapid welding of the bridge, and reducing the risk of manual high-altitude operations.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge welding, and in particular to a bridge welding device and a bridge welding method. Background Art

[0002] Bridges generally refer to structures built across rivers, lakes, and seas to enable vehicles and pedestrians to pass smoothly. In order to adapt to the modern high-speed development of the transportation industry, bridges are also extended to buildings that cross mountain streams, poor geology, or meet other transportation needs to make passage more convenient. With the development of material technology, the materials of bridges have gradually changed. At present, the main structure of bridges is a steel structure skeleton with a concrete structure. Welding, also known as fusion, is a manufacturing process and technology that uses heating, high temperature or high pressure to join metals or other thermoplastic materials such as plastics. There are many sources of energy for modern welding, including gas flame, arc, laser, electron beam, friction and ultrasonic waves. In addition to being used in factories, welding can also be performed in a variety of environments, such as field Outdoor, underwater and high in the air, welding may bring danger to the operator no matter where it is, so proper protective measures must be taken during welding. Although with the development of integrated assembly technology, various types of buildings have gradually adopted the process of pre-assembly and then installation, bridges, as buildings with large spans and high structural strength, usually require welding workers to perform welding work on the preliminarily assembled high-altitude steel structure skeleton. Compared with traditional ground welding, bridge welding work at high altitude mainly faces high operating difficulty and low ambient temperature. Workers perform high-altitude operations for a long time, which increases the risk and produces fatigue, which in turn leads to reduced welding strength and other problems, affecting the overall strength of the bridge. For this reason, we propose a bridge welding device and a bridge welding method. Summary of the invention

[0003] The present invention provides a bridge welding device and a bridge welding method to solve the above-mentioned deficiencies in the prior art.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A bridge welding device and a bridge welding method, comprising a body and an electromagnet fixedly connected to the bottom of the body, and further comprising;

[0006] A rotating and swinging adjustment mechanism, which is installed inside the machine body and is used to adjust the welding angle of the welding equipment. The rotating and swinging adjustment mechanism includes a connecting rod rotatably connected to the inside of the machine body and a worm gear fixedly connected to one side of the connecting rod;

[0007] A moving mechanism, the moving mechanism is installed at one end of the connecting rod, and is used for automatically moving the welding equipment for welding. The moving mechanism includes a connecting plate fixedly connected to one end of the connecting rod, a first reciprocating screw rod rotatably connected to the connecting plate, and a first moving plate threadedly sleeved on the first reciprocating screw rod;

[0008] An angle flip mechanism, the angle flip mechanism is installed on the first movable plate, which is used to adjust the angle of the welding equipment and is also used to perform swing corrugation welding. The angle flip mechanism includes a linkage plate fixedly connected to the first movable plate, a second reciprocating screw rod rotatably connected to the linkage plate, and a second movable plate threadedly connected to the second reciprocating screw rod;

[0009] A height adjustment mechanism, which is installed on one side of the linkage plate and is used to adjust the height of the welding point of the welding equipment. The height adjustment mechanism includes a swing frame rotatably connected to the linkage plate and a mounting frame fixedly connected to one end of the swing frame;

[0010] A driving mechanism is installed on one side of the connecting plate and is used to output power to the moving mechanism and the angle flipping mechanism. A transmission mechanism is provided between the driving mechanism and the moving mechanism and the angle flipping mechanism.

[0011] Furthermore, the rotation and swing adjustment mechanism also includes a first motor fixedly connected to the inside of the machine body, the output shaft of the first motor is fixedly connected to a first bevel gear, the inside of the machine body is rotatably connected to a worm, one end of the worm is fixedly connected to the first bevel gear at a second bevel gear, one side of the second bevel gear is meshed with the first bevel gear for transmission, and one side of the worm is meshed with the worm wheel for transmission.

[0012] Furthermore, the moving mechanism also includes a first guide rod fixedly connected to the top of the connecting plate, a guide plate is slidably connected to the first guide rod, and one side of the guide plate is fixedly connected to the bottom of the linkage plate.

[0013] The gear wheel is connected with the third bevel gear at one end to the cam, and the gear wheel is connected with the third bevel gear at one end to the cam.

[0014] Furthermore, the height adjustment mechanism also includes a second guide rod fixedly connected to the inside of the mounting frame, a threaded rod is rotatably connected to the inside of the mounting frame, a movable frame is threadedly sleeved on the threaded rod, a welding gun body is fixedly mounted on the movable frame, a guide hole and a threaded hole are respectively opened on the movable frame, the threaded rod is threadedly sleeved inside the threaded hole, the second guide rod is movably sleeved inside the guide hole, one end of the threaded rod is fixedly connected to the first pulley, a second motor is fixedly connected to one side of the mounting frame, the output shaft of the second motor is fixedly connected to the second pulley, and the outside of the second pulley is transmission-connected to the first pulley by the same belt.

[0015] Furthermore, the driving mechanism includes a third motor fixedly connected to the bottom of one side of the connecting plate, and the output shaft of the third motor is fixedly connected to the first sprocket.

[0016] Furthermore, the transmission mechanism includes a second sprocket fixedly connected to one end of the first reciprocating screw rod, one end of the driven rod is fixedly connected to a one-way sprocket corresponding to the second sprocket and the first sprocket, and the external transmission of the second sprocket, the one-way sprocket and the first sprocket is connected by the same chain.

[0017] A bridge welding method, which is applicable to any one of the bridge welding devices described above, comprises the following steps:

[0018] Step 1: The bridge welding equipment is adsorbed as a whole at the designated position of the bridge to be welded by an electromagnet. After adsorption, the staff remotely controls the equipment through a remote control device. When linear welding is performed, the third motor is controlled to start forward through the remote control device. When the third motor starts forward, the second sprocket and the one-way sprocket are driven to rotate through chains respectively. When the second sprocket rotates forward, it drives the first reciprocating screw rod to rotate synchronously. When the one-way sprocket rotates forward, it does not mesh with the driven rod. Therefore, when the one-way sprocket rotates forward, the driven rod remains stationary.

[0019] When the first reciprocating screw rotates, it drives the first moving plate to move, and at the same time drives the linkage plate to move smoothly along the first guide rod through the guide plate. The movement of the linkage plate drives the swing frame and the mounting frame to move back and forth synchronously. When the mounting frame moves back and forth, it drives the welding gun body to move back and forth, and linear welding is performed at the same time.

[0020] Step 2: When the height of the welding point needs to be adjusted, the second motor is controlled by the remote control device to start forward or reverse, the start of the second motor drives the rotation of the second pulley, the rotation of the second pulley drives the first pulley to rotate through the belt, the rotation of the first pulley drives the rotation of the threaded rod, the rotation of the threaded rod drives the moving frame to move, and the height position of the welding gun body is adjusted by the movement of the moving frame;

[0021] Step 3: When the welding angle needs to be adjusted, the first motor is started by controlling the remote control device. The start of the first motor drives the rotation of the first bevel gear, and the rotation of the first bevel gear meshes with the second bevel gear. The rotation of the second bevel gear drives the worm to rotate synchronously. The rotation of the worm meshes with the worm wheel. The rotation of the worm wheel drives the connecting rod to rotate. The rotation of the connecting rod drives the rotation of the connecting plate. The welding point position angle is adjusted by the rotation of the connecting plate.

[0022] Step 4: When corrugation welding is required for the welding gap, the third motor is started in reverse through the remote control device. The reverse start of the third motor drives the first sprocket to rotate in reverse. The reverse rotation of the first sprocket drives the second sprocket and the one-way sprocket to rotate in synchronous reverse through the chain. The one-way sprocket engages with the driven rod when rotating in reverse, thereby driving the driven rod to rotate synchronously. The rotation of the driven rod drives the rotation of the linkage sleeve. The rotation of the linkage sleeve drives the rotation of the fourth bevel gear, and the third bevel gear is driven to rotate through the engagement with the fourth bevel gear. The rotation of the third bevel gear drives the rotation of the second reciprocating screw rod. The rotation of the second reciprocating screw rod drives the second movable plate to reciprocate. The reciprocating movement of the second movable plate drives the swing frame to swing back and forth through the traction plate. The reciprocating swing of the swing frame drives the mounting frame to swing synchronously. The swing of the mounting frame drives the welding gun body to swing back and forth, and the arc welding is performed on the welding position through the reciprocating swing of the welding gun body.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention performs power output and power transmission processing on the equipment by installing a driving mechanism, a rotating swing adjustment mechanism, an angle flip mechanism, a height adjustment mechanism, a moving mechanism and a transmission mechanism;

[0025] In summary, the equipment can not only adjust different welding bevel angles of the equipment through the rotating and swinging adjustment mechanism, but also perform arc welding on the bridge through the angle flipping mechanism. At the same time, it can also perform straight-line automatic long-distance arc welding, which effectively ensures the effect and efficiency of automatic and rapid welding of bridges and reduces the risk of manual high-altitude operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall top view of the three-dimensional structure of a bridge welding device proposed by the present invention;

[0027] Figure 2 This is a schematic diagram of the overall bottom-up stereoscopic structure of a bridge welding device proposed by the present invention;

[0028] Figure 3This is a bottom-up stereoscopic structural schematic diagram of a driving mechanism of a bridge welding device proposed by the present invention;

[0029] Figure 4 A bottom-up stereoscopic structural diagram of a rotating and swinging adjustment mechanism of a bridge welding device proposed by the present invention;

[0030] Figure 5 A bottom-up stereoscopic structural diagram of a linkage plate and a height adjustment mechanism of a bridge welding device proposed by the present invention;

[0031] Figure 6 A top-down perspective structural diagram of an angle flipping mechanism and a height adjustment mechanism of a bridge welding device proposed by the present invention;

[0032] Figure 7 This is a bottom-up stereoscopic structural schematic diagram of a swing frame and a height adjustment mechanism of a bridge welding device proposed by the present invention.

[0033] Description of reference numerals:

[0034] 1. Machine body; 2. Electromagnet; 3. Connecting rod; 4. Connecting plate; 5. Worm gear; 6. Worm; 7. First motor; 8. First bevel gear; 9. Second bevel gear; 10. First reciprocating screw rod; 11. First moving plate; 12. Linking plate; 13. Guide plate; 14. First guide rod; 15. Swing frame; 16. Mounting frame; 17. Threaded rod; 18. Moving frame; 19. First pulley; 20. Second motor; 21. Second pulley; 22. Belt; 23. Second guide rod; 24. Electric welding gun body; 25. Second reciprocating screw rod; 26. Second moving plate; 27. Traction plate; 28. Third bevel gear; 29. ​​Linking sleeve; 30. Fourth bevel gear; 31. Third motor; 32. First sprocket; 33. Second sprocket; 34. Follower rod; 35. One-way sprocket; 36. Chain. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, and it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0038] Example 1

[0039] Reference Figure 1-7 : A bridge welding device and a bridge welding method, comprising a machine body 1 and an electromagnet 2 fixedly connected to the bottom of the machine body 1, and also comprising a rotation and swing adjustment mechanism, the rotation and swing adjustment mechanism is installed inside the machine body 1, and is used to adjust the welding angle of the welding equipment, the rotation and swing adjustment mechanism comprises a connecting rod 3 rotatably connected to the inside of the machine body 1 and a worm gear 5 fixedly connected to one side of the connecting rod 3, the rotation and swing adjustment mechanism also comprises a first motor 7 fixedly connected to the inside of the machine body 1, the output shaft of the first motor 7 is fixedly connected to a first bevel gear 8, the inside of the machine body 1 is rotatably connected to a worm 6, one end of the worm 6 is fixedly connected to the first bevel gear 8 at a second bevel gear 9, one side of the second bevel gear 9 is meshed with the first bevel gear 8 for transmission, and one side of the worm 6 is meshed with the worm gear 5 for transmission;

[0040] The moving mechanism is installed at one end of the connecting rod 3, which is used for automatically moving the welding equipment for welding. The moving mechanism includes a connecting plate 4 fixedly connected to one end of the connecting rod 3, a first reciprocating screw rod 10 rotatably connected to the connecting plate 4, and a first moving plate 11 threadedly sleeved on the first reciprocating screw rod 10. The moving mechanism also includes a first guide rod 14 fixedly connected to the top of the connecting plate 4, a guide plate 13 is slidably connected to the first guide rod 14, and one side of the guide plate 13 is fixedly connected to the bottom of the linkage plate 12;

[0041] Angle flip mechanism, the angle flip mechanism is installed on the first movable plate 11, which is used to adjust the angle flip of the welding equipment and is also used for swing corrugated welding. The angle flip mechanism includes a linkage plate 12 fixedly connected to the first movable plate 11, a second reciprocating screw rod 25 rotatably connected to the linkage plate 12, and a second movable plate 26 threadedly connected to the second reciprocating screw rod 25. The angle flip mechanism also includes a third bevel gear 28 fixedly connected to one end of the second reciprocating screw rod 25, a linkage sleeve 29 is rotatably connected to one side of the linkage plate 12, and a fourth bevel gear 30 is fixedly connected to one side of the linkage sleeve 29. One side of the fourth bevel gear 30 is meshed with the third bevel gear 28 for transmission, a driven rod 34 is sleeved inside the linkage sleeve 29, and a limited linkage block is fixedly connected inside the linkage sleeve 29, and a limited groove is provided on the driven rod 34 corresponding to the limited linkage block, and the limited linkage block is movably sleeved inside the limited groove, and a traction plate 27 is rotatably connected to the second movable plate 26, and the other end of the traction plate 27 is rotatably connected to the swing frame 15, and a trapezoidal slider is fixedly connected to the bottom of the second movable plate 26, and a trapezoidal slide groove is provided at the top of the linkage plate 12 corresponding to the trapezoidal slider, and the trapezoidal slide groove is movably sleeved inside the trapezoidal slide groove;

[0042] A height adjustment mechanism, which is installed on one side of the linkage plate 12 and is used to adjust the height of the welding point of the welding equipment. The height adjustment mechanism includes a swing frame 15 rotatably connected to the linkage plate 12 and a mounting frame 16 fixedly connected to one end of the swing frame 15. The height adjustment mechanism also includes a second guide rod 23 fixedly connected to the inside of the mounting frame 16. The inside of the mounting frame 16 is rotatably connected to a threaded rod 17, and a movable frame 18 is threadedly sleeved on the threaded rod 17. A welding gun body 24 is fixedly installed on the movable frame 18. A guide hole and a threaded hole are respectively provided on the movable frame 18. The threaded rod 17 is threadedly sleeved inside the threaded hole, and the second guide rod 23 is movably sleeved inside the guide hole. One end of the threaded rod 17 is fixedly connected to a first pulley 19, and one side of the mounting frame 16 is fixedly connected to a second motor 20. The output shaft of the second motor 20 is fixedly connected to a second pulley 21, and the outside of the second pulley 21 is transmission-connected to the first pulley 19 with the same belt 22;

[0043] The driving mechanism is installed on one side of the connecting plate 4, and is used to output power to the moving mechanism and the angle flipping mechanism. A transmission mechanism is provided between the driving mechanism and the moving mechanism and the angle flipping mechanism. The driving mechanism includes a third motor 31 fixedly connected to the bottom of one side of the connecting plate 4, and the output shaft of the third motor 31 is fixedly connected to the first sprocket 32.

[0044] In the present invention, the transmission mechanism includes a second sprocket 33 fixedly connected to one end of the first reciprocating screw rod 10, and one end of the driven rod 34 is fixedly connected to a one-way sprocket 35 corresponding to the second sprocket 33 and the first sprocket 32. The external transmission of the second sprocket 33, the one-way sprocket 35 and the first sprocket 32 ​​is connected by the same chain 36 (the working principle of the one-way sprocket and the sprocket belongs to the prior art, and the working principle and internal structure are not introduced and explained in detail here).

[0045] Example 2

[0046] This embodiment provides a technical solution based on the first embodiment: a bridge welding method, the steps are as follows:

[0047] Step 1: The bridge welding equipment is adsorbed as a whole at the designated position of the bridge to be welded by the electromagnet 2. After adsorption, the staff remotely controls the equipment through the remote control device. When linear welding is performed, the third motor 31 is controlled to start forward by the remote control device. When the third motor 31 starts forward, the second sprocket 33 and the one-way sprocket 35 are driven to rotate respectively through the chain 36. When the second sprocket 33 rotates forward, it drives the first reciprocating screw rod 10 to rotate synchronously. When the one-way sprocket 35 rotates forward, it does not mesh with the driven rod 34. Therefore, when the one-way sprocket 35 rotates forward, the driven rod 34 remains stationary.

[0048] When the first reciprocating screw rod 10 rotates, it drives the first moving plate 11 to move, and at the same time drives the linkage plate 12 to move smoothly along the first guide rod 14 through the guide plate 13. The movement of the linkage plate 12 drives the swing frame 15 and the mounting frame 16 to reciprocate synchronously. When the mounting frame 16 reciprocates, it drives the welding gun body 24 to reciprocate, and linear welding is performed at the same time.

[0049] Step 2: When the height of the welding point needs to be adjusted, the second motor 20 is controlled by the remote control device to start forward or reverse. The start of the second motor 20 drives the rotation of the second pulley 21. The rotation of the second pulley 21 drives the first pulley 19 to rotate through the belt 22. The rotation of the first pulley 19 drives the rotation of the threaded rod 17. The rotation of the threaded rod 17 drives the moving frame 18 to move. The height position of the welding gun body 24 is adjusted by the movement of the moving frame 18.

[0050] Step 3: When the welding angle needs to be adjusted, the first motor 7 is controlled to start by the remote control device. The start of the first motor 7 drives the rotation of the first bevel gear 8, and the rotation of the first bevel gear 8 is meshed with the second bevel gear 9 for transmission. The rotation of the second bevel gear 9 drives the worm 6 to rotate synchronously. The rotation of the worm 6 is meshed with the worm wheel 5 for transmission. The rotation of the worm wheel 5 drives the connecting rod 3 to rotate. The rotation of the connecting rod 3 drives the rotation of the connecting plate 4. The position angle of the welding point is adjusted by the rotation of the connecting plate 4.

[0051] Step 4: When corrugation welding is required for the welding gap, the third motor 31 is started in reverse through the remote control device. The reverse start of the third motor 31 drives the first sprocket 32 ​​to rotate in reverse. The reverse rotation of the first sprocket 32 ​​drives the second sprocket 33 and the one-way sprocket 35 to rotate in reverse synchronously through the chain 36. When the one-way sprocket 35 rotates in reverse, it meshes with the driven rod 34, thereby driving the driven rod 34 to rotate synchronously. The rotation of the driven rod 34 drives the rotation of the linkage sleeve 29, and the rotation of the linkage sleeve 29 drives the rotation of the fourth bevel gear 30. The third bevel gear 28 is driven to rotate through meshing with the fourth bevel gear 30, and the rotation of the third bevel gear 28 drives the rotation of the second reciprocating screw rod 25, and the rotation of the second reciprocating screw rod 25 drives the second movable plate 26 to reciprocate, and the reciprocating movement of the second movable plate 26 drives the swing frame 15 to swing back and forth through the traction plate 27, and the reciprocating swing of the swing frame 15 drives the mounting frame 16 to swing synchronously, and the swing of the mounting frame 16 drives the welding gun body 24 to swing back and forth, and the reciprocating swing of the welding gun body 24 performs arc welding on the welding point.

[0052] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A bridge welding device, comprising a body (1) and an electromagnet (2) fixedly connected to the bottom of the body (1), characterized in that: Also includes; A rotary swing adjustment mechanism, the rotary swing adjustment mechanism being installed inside the machine body (1) and being used to adjust the welding angle of the welding device, the rotary swing adjustment mechanism comprising a connecting rod (3) rotatably connected to the inside of the machine body (1) and a worm gear (5) fixedly connected to one side of the connecting rod (3); A moving mechanism, the moving mechanism being mounted on one end of the connecting rod (3) and being used for automatically moving the welding equipment for welding, the moving mechanism comprising a connecting plate (4) fixedly connected to one end of the connecting rod (3), a first reciprocating screw rod (10) rotatably connected to the connecting plate (4), and a first moving plate (11) threadedly sleeved on the first reciprocating screw rod (10); An angle flip mechanism, the angle flip mechanism is mounted on the first movable plate (11), and is used to adjust the angle flip of the welding equipment and is also used to perform swing corrugation welding, the angle flip mechanism comprises a linkage plate (12) fixedly connected to the first movable plate (11), a second reciprocating screw rod (25) rotatably connected to the linkage plate (12), and a second movable plate (26) threadably connected to the second reciprocating screw rod (25), wherein the second movable plate (26) is rotatably connected to a traction plate (27); A height adjustment mechanism, the height adjustment mechanism being mounted on one side of the linkage plate (12) and being used to adjust the height of a welding point of the welding equipment, the height adjustment mechanism comprising a swing frame (15) rotatably connected to the linkage plate (12) and a mounting frame (16) fixedly connected to one end of the swing frame (15), the other end of the traction plate (27) being rotatably connected to the swing frame (15); The height adjustment mechanism further comprises a second guide rod (23) fixedly connected to the interior of the mounting frame (16); a threaded rod (17) is rotatably connected to the interior of the mounting frame (16); a movable frame (18) is threadedly sleeved on the threaded rod (17); a welding gun body (24) is fixedly mounted on the movable frame (18); a guide hole and a threaded hole are respectively provided on the movable frame (18); the threaded rod (17) is threadedly sleeved inside the threaded hole; the second guide rod (23) is movably sleeved inside the guide hole; one end of the threaded rod (17) is fixedly connected to a first pulley (19); a second motor (20) is fixedly connected to one side of the mounting frame (16); an output shaft of the second motor (20) is fixedly connected to a second pulley (21); and the outside of the second pulley (21) is transmission-connected to the first pulley (19) via a same belt (22); A driving mechanism is installed on one side of the connecting plate (4) and is used to output power to the moving mechanism and the angle flipping mechanism. A transmission mechanism is provided between the driving mechanism and the moving mechanism and the angle flipping mechanism.

2. A bridge welding device according to claim 1, characterized in that: The rotary swing adjustment mechanism further comprises a first motor (7) fixedly connected to the interior of the machine body (1); an output shaft of the first motor (7) is fixedly connected to a first bevel gear (8); a worm (6) is rotatably connected to the interior of the machine body (1); one end of the worm (6) is fixedly connected to the first bevel gear (8) at a second bevel gear (9); one side of the second bevel gear (9) is meshed with the first bevel gear (8) for transmission; and one side of the worm (6) is meshed with the worm wheel (5) for transmission.

3. A bridge welding device according to claim 2, characterized in that: The moving mechanism further comprises a first guide rod (14) fixedly connected to the top of the connecting plate (4), a guide plate (13) being slidably connected to the first guide rod (14), and one side of the guide plate (13) being fixedly connected to the bottom of the linkage plate (12).

4. A bridge welding device according to claim 3, characterized in that: The angle flipping mechanism further comprises a third bevel gear (28) fixedly connected to one end of the second reciprocating screw (25); one side of the linkage plate (12) is rotatably connected to a linkage sleeve (29); one side of the linkage sleeve (29) is fixedly connected to a fourth bevel gear (30); one side of the fourth bevel gear (30) is meshed with the third bevel gear (28) for transmission; a driven rod (34) is sleeved inside the linkage sleeve (29); a limited position linkage block is fixedly connected inside the linkage sleeve (29); a limited position groove is provided on the driven rod (34) at a position corresponding to the limited position linkage block; the limited position linkage block is movably sleeved inside the limited position groove; a trapezoidal slider is fixedly connected to the bottom of the second movable plate (26); a trapezoidal slide groove is provided at the top of the linkage plate (12) at a position corresponding to the trapezoidal slider; the trapezoidal slide groove is movably sleeved inside the trapezoidal slide groove.

5. A bridge welding device according to claim 4, characterized in that: The driving mechanism comprises a third motor (31) fixedly connected to the bottom of one side of the connecting plate (4), and an output shaft of the third motor (31) is fixedly connected to a first sprocket (32).

6. A bridge welding device according to claim 5, characterized in that: The transmission mechanism comprises a second sprocket (33) fixedly connected to one end of the first reciprocating screw rod (10); one end of the driven rod (34) is fixedly connected to a one-way sprocket (35) at a position corresponding to the second sprocket (33) and the first sprocket (32); and the second sprocket (33), the one-way sprocket (35) and the first sprocket (32) are externally connected to each other via a same chain (36).

7. A bridge welding method, which is applicable to the bridge welding device according to claim 6, characterized in that: The steps of the method are as follows: Step 1: The bridge welding device is adsorbed as a whole at a designated position of the bridge to be welded by an electromagnet (2). After adsorption, a worker performs remote control by a remote control device. When performing a linear welding process, the third motor (31) is controlled by the remote control device to start in a positive direction. When the third motor (31) starts in a positive direction, the second sprocket (33) and the one-way sprocket (35) are driven to rotate respectively by a chain (36). When the second sprocket (33) rotates in a positive direction, it drives the first reciprocating screw rod (10) to rotate synchronously. When the one-way sprocket (35) rotates in a positive direction, it does not mesh with the driven rod (34). Therefore, when the one-way sprocket (35) rotates in a positive direction, the driven rod (34) remains stationary. When the first reciprocating screw rod (10) rotates, it drives the first moving plate (11) to move, and at the same time drives the linkage plate (12) to move smoothly along the first guide rod (14) through the guide plate (13); the movement of the linkage plate (12) drives the swing frame (15) and the mounting frame (16) to move back and forth synchronously; when the mounting frame (16) moves back and forth, it drives the welding gun body (24) to move back and forth, and linear welding is performed at the same time; Step 2: When the height of the welding point needs to be adjusted, the second motor (20) is controlled by the remote control device to start forward or reverse, the start of the second motor (20) drives the second pulley (21) to rotate, the rotation of the second pulley (21) drives the first pulley (19) to rotate through the belt (22), the rotation of the first pulley (19) drives the threaded rod (17) to rotate, the rotation of the threaded rod (17) drives the moving frame (18) to move, and the height position of the welding gun body (24) is adjusted by the movement of the moving frame (18); Step 3: When the welding angle needs to be adjusted, the first motor (7) is controlled to start by the remote control device. The start of the first motor (7) drives the first bevel gear (8) to rotate. The rotation of the first bevel gear (8) is meshed with the second bevel gear (9) for transmission. The rotation of the second bevel gear (9) drives the worm (6) to rotate synchronously. The rotation of the worm (6) is meshed with the worm wheel (5) for transmission. The rotation of the worm wheel (5) drives the connecting rod (3) to rotate. The rotation of the connecting rod (3) drives the connecting plate (4) to rotate. The position angle of the welding point is adjusted by the rotation of the connecting plate (4). Step 4: When corrugation welding is required for the welding gap, the third motor (31) is started in reverse through the remote control device. The reverse start of the third motor (31) drives the first sprocket (32) to rotate in reverse. The reverse rotation of the first sprocket (32) drives the second sprocket (33) and the one-way sprocket (35) to rotate in reverse synchronously through the chain (36). When the one-way sprocket (35) rotates in reverse, it meshes with the driven rod (34), thereby driving the driven rod (34) to rotate synchronously. The rotation of the driven rod (34) drives the rotation of the linkage sleeve (29). The rotation of the linkage sleeve (29) drives the rotation of the fourth bevel gear (30). The third bevel gear (28) is driven to rotate by meshing with the fourth bevel gear (30), the rotation of the third bevel gear (28) drives the second reciprocating screw rod (25) to rotate, the rotation of the second reciprocating screw rod (25) drives the second movable plate (26) to reciprocate, the reciprocating movement of the second movable plate (26) drives the swing frame (15) to swing reciprocatingly through the traction plate (27), the reciprocating swing of the swing frame (15) drives the mounting frame (16) to swing synchronously, the swing of the mounting frame (16) drives the electric welding gun body (24) to swing reciprocatingly, and the reciprocating swing of the electric welding gun body (24) performs arc welding on the welding point.

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