A welding device for water conservancy construction engineering

Abstract

A welding device for water conservancy construction projects includes a welding mechanism and a base. Two groups of large-diameter steel pipe supporting devices are arranged on the base. The two groups of large-diameter steel pipe supporting devices are symmetrically arranged and are respectively used to support and place two large-diameter steel pipes; each group of large-diameter steel pipe supporting devices includes a plurality of roller support seats, and all the roller support seats are arranged side by side at intervals; in summary, the present invention mainly includes a large-diameter steel pipe supporting device, a welding mechanism and a conveying and docking mechanism. The welding mechanism includes a welding trolley that can move along a circular track, and with the submerged arc welding technology, it can efficiently complete the welding between steel pipes; compared with traditional welding methods, the present invention saves the time of manually building and dismantling the welding platform, and also improves the quality and efficiency of welding. The improvement of the degree of automation also means less manpower requirements, reduces labor intensity, and improves the construction progress and safety of the entire project.

Description

Technical Field

[0001] The invention belongs to the technical field of water conservancy projects, and in particular relates to a welding device for water conservancy construction projects. Background Art

[0002] In water conservancy projects, it is necessary to lay drainage pipes in corresponding sections for drainage work. In order to increase the drainage volume, large-diameter steel pipes are usually selected for welding to form pipelines. When welding large-diameter steel pipes used in water conservancy projects, because the diameter of the steel pipes is large, it is necessary to manually set up multi-layer welding platforms for pipeline welding. After welding is completed, the platform needs to be dismantled. Setting up and dismantling the platform wastes a lot of time and reduces work efficiency. Summary of the invention

[0003] The present invention aims to provide a welding device for water conservancy construction projects to solve the technical problem that all large-diameter steel pipes in existing water conservancy projects need to set up multi-layer welding platforms when welding, which takes a lot of time to build and dismantle the platforms, resulting in low welding efficiency.

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

[0005] A welding device for water conservancy construction engineering, comprising a welding mechanism and a base, wherein two sets of large-diameter steel pipe supporting devices are arranged on the base, the two sets of large-diameter steel pipe supporting devices are symmetrically arranged, and the two sets of large-diameter steel pipe supporting devices are respectively used to support and place two large-diameter steel pipes;

[0006] Each group of large-diameter steel pipe supporting devices includes a plurality of roller supporting seats, all of which are arranged side by side and spaced apart, and each roller supporting seat includes a box-type pedestal, both sides of which are fixed with oblique arm beams, a bottom supporting wheel is rotatably mounted in the middle of the top surface of the box-type pedestal, and side supporting wheels are rotatably mounted at the ends of the two oblique arm beams; when the large-diameter steel pipe is placed on the large-diameter steel pipe supporting device, the bottom supporting wheel and the two side supporting wheels are all supported on the outer wall of the large-diameter steel pipe;

[0007] The welding mechanism includes a welding trolley and a circular track. A mounting ring is connected to the side of the circular track. A plurality of threaded holes are opened on the mounting ring. All the threaded holes are arranged in a circular array around the mounting ring. A pressure bolt is threadedly connected in each threaded hole. The mounting ring is located at the outer periphery of the large-diameter steel pipe. The end of the pressure bolt is in pressure contact with the outer wall of the large-diameter steel pipe. The mounting ring can be fixed to the outer periphery of the large-diameter steel pipe through the pressure bolt.

[0008] The welding carriage is arranged on the outer arc surface of the circular track, and the welding carriage can move circumferentially on the outer arc surface of the circular track. The welding carriage is provided with a submerged arc welding device.

[0009] Furthermore, the welding trolley includes a trolley box and a motor box, annular track grooves are provided on both sides of the circular track, two legs are fixed on both sides of the trolley box, rollers are installed on the legs, the rollers are arranged in the annular track grooves, and the rollers can roll in the annular track grooves;

[0010] The submerged arc welding is arranged on the vehicle box body, a gear shaft is rotatably mounted in the vehicle box body, a notch is provided at the bottom of the vehicle box body, an outer gear ring is provided on the outer arc surface of the circular track, and the gear part of the gear shaft is meshed with the outer gear ring after passing through the notch;

[0011] The motor box is installed on the vehicle box body, a travel motor is installed in the motor box, a driving gear is arranged on the main shaft of the travel motor, a driven gear is installed on the gear shaft, and the driving gear is meshed with the driven gear.

[0012] Furthermore, a mounting box is fixed to the side of the vehicle box body, and a zigzag welding mechanism is installed in the mounting box. The zigzag welding mechanism includes a reciprocating motor and a bracket, and the reciprocating motor and the bracket are both installed in the mounting box. A circular wheel disk is fixedly installed on the main shaft of the reciprocating motor, and the main shaft of the reciprocating motor is located at a non-center position of the circular wheel disk. A reciprocating shaft body is passed through the bracket, and the reciprocating shaft body is arranged in a horizontal direction. The reciprocating shaft body can move along its axial direction on the bracket. A through hole is opened on the side wall of the mounting box, and a sleeve is fixed in the through hole. One end of the reciprocating shaft body passes outward from the sleeve, and a fixing clamp is arranged at the end of the reciprocating shaft body, and the fixing clamp is used to fix and install a welding head for submerged arc welding. A cylindrical head is arranged at the other end of the reciprocating shaft body, and a movable wheel is rotatably installed at the lower end of the cylindrical head. The movable wheel is located in the circular wheel disk, and the wheel surface of the movable wheel contacts the inner arc surface of the circular wheel disk; a compression spring is sleeved on the reciprocating shaft body, and both ends of the compression spring abut against the bracket and the cylindrical head;

[0013] A guide shaft body is also fixed on the upper end of the bracket. The guide shaft body is arranged parallel to the reciprocating shaft body. The upper end of the cylindrical head is arranged on the guide shaft body, and the cylindrical head can slide on the guide shaft body.

[0014] The welding device for water conservancy construction projects also includes a conveying docking mechanism, which includes a high-torque dual-axis motor and two transmission shafts. The high-torque dual-axis motor is installed in the middle of the base, and the two transmission shafts are respectively arranged on two sets of large-diameter steel pipe supporting devices, and the transmission shafts are installed between two box-type pedestals of the large-diameter steel pipe supporting devices by rotation; the two output shafts of the high-torque dual-axis motor are respectively connected to the two transmission shafts through couplings;

[0015] The transmission shaft is inserted into the box-type pedestal, and worm segments are arranged on both transmission shafts, and the thread rotation directions of the worm segments on the two transmission shafts are opposite, and the worm segments are located in the corresponding box-type pedestals;

[0016] A rotating shaft is rotatably installed in each box-type pedestal, the bottom supporting wheel is arranged on the rotating shaft, a worm gear and two first bevel gears are also arranged on the rotating shaft, and the worm gear is meshed with the worm segment in the box-type pedestal;

[0017] An inclined shaft body is rotatably installed in the two inclined arm beams connected to the box-type pedestal, and a second bevel gear and a first sprocket are respectively provided at both ends of the inclined shaft body, and the second bevel gear is meshed with the first bevel gear; an intermediate wheel shaft and a wheel shaft body are rotatably installed in the end of the inclined arm beam, the side supporting wheel is arranged on the wheel shaft body, and the wheel shaft body is also provided with a first gear, and the intermediate wheel shaft is provided with a second gear and a second sprocket, the second sprocket is connected to the first sprocket by a chain, and the second gear is meshed with the first gear.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention mainly includes a large-diameter steel pipe supporting device, a welding mechanism and a conveying and docking mechanism. The large-diameter steel pipe supporting device ensures that the steel pipe can be stably placed thereon, and reduces friction through roller support, which facilitates the docking of steel pipes; the welding mechanism includes a welding trolley that can move along a circular track, and with the submerged arc welding technology, it can efficiently complete the welding between steel pipes; in order to further improve the efficiency of steel pipe docking, a conveying and docking mechanism is designed. The transmission system driven by a high-torque dual-axis motor makes the movement of the steel pipe more controllable and precise, reducing manpower requirements while improving the accuracy of docking; in order to improve welding quality and reduce deformation after welding, a serrated welding mechanism is designed. This mechanism enables the welding head to move along a serrated trajectory, so that the welding area is heated more evenly, which helps to improve welding quality and structural stability.

[0019] In summary, compared with traditional welding methods, the present invention saves time for manual construction and dismantling of welding platforms, and also improves the quality and efficiency of welding. In addition, the improvement in the degree of automation also means less manpower requirements, reduces labor intensity, and improves the construction progress and safety of the entire project. The present invention demonstrates the ability of modern engineering technology to improve production efficiency and construction quality, and is a major advancement in the field of water conservancy engineering. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 This is a structural schematic diagram of a welding device for water conservancy construction engineering of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the welding mechanism;

[0023] Figure 3It is the structural diagram of the welding trolley;

[0024] Figure 4 It is a structural schematic diagram of a roller support seat;

[0025] Figure 5 This is a schematic diagram of the state where the roller support seat supports a large diameter steel pipe;

[0026] Figure 6 for Figure 5 Enlarged view of H in the middle;

[0027] Figure 7 It is a structural schematic diagram of a zigzag welding mechanism. DETAILED DESCRIPTION

[0028] 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.

[0029] The present invention is further described in detail below in conjunction with embodiments.

[0030] A specific embodiment of a welding device for water conservancy construction projects provided by the present invention:

[0031] like Figure 1 As shown, a welding device for water conservancy construction engineering includes a welding mechanism and a base 1, on which two sets of large-diameter steel pipe supporting devices are arranged, and the two sets of large-diameter steel pipe supporting devices are symmetrically arranged, and the two sets of large-diameter steel pipe supporting devices are respectively used to support and place two large-diameter steel pipes 100;

[0032] Each group of large-diameter steel pipe supporting devices includes two roller support seats 2, each roller support seat 2 includes a box-type pedestal 3, both sides of the box-type pedestal 3 are fixed with oblique arm beams 4, a bottom supporting wheel 5 is rotatably installed in the middle of the top surface of the box-type pedestal 3, and side supporting wheels 6 are rotatably installed at the ends of the two oblique arm beams 4; when the large-diameter steel pipe 100 is placed on the large-diameter steel pipe supporting device, the bottom supporting wheel 5 and the two side supporting wheels 6 are all supported on the outer wall of the large-diameter steel pipe 100;

[0033] The welding mechanism is responsible for welding two large diameter steel pipes 100, such as Figure 2As shown, the welding mechanism includes a welding trolley and a circular track 7, the side of the circular track 7 is connected with a mounting ring 8, specifically, the mounting ring 8 is connected to the side of the circular track 7 near the inner arc position, a plurality of threaded holes 9 are opened on the mounting ring 8, all the threaded holes 9 are arranged in a circular array around the mounting ring 8, and a pressing bolt 21 is threadedly connected in each threaded hole 9, the mounting ring 8 is located at the outer periphery of the large diameter steel pipe 100, and the end of the pressing bolt 21 is in pressing contact with the outer wall of the large diameter steel pipe 100, and the mounting ring 8 can be fixed to the outer periphery of the large diameter steel pipe 100 through the pressing bolt 21;

[0034] The welding carriage is arranged on the outer arc surface of the circular track 7, and the welding carriage can move circumferentially on the outer arc surface of the circular track 7. The welding carriage is provided with a submerged arc welding device.

[0035] like Figure 3 As shown, the welding trolley includes a trolley box body 10 and a motor box 11, and an annular track groove 12 is opened on both sides of the circular track 7. Two legs are fixed on both sides of the trolley box body 10, and rollers 13 are installed on the legs. The rollers 13 are arranged in the annular track groove 12, and the rollers 13 can roll in the annular track groove 12;

[0036] The submerged arc welding is arranged on the car box body 10, a gear shaft 14 is rotatably mounted in the car box body 10, a notch is provided at the bottom of the car box body 10, an outer gear ring 15 is provided on the outer arc surface of the circular track 7, and the gear part of the gear shaft 14 is meshed with the outer gear ring 15 after passing through the notch;

[0037] The motor box 11 is mounted on the vehicle box body 10 , a travel motor 16 is mounted in the motor box 11 , a driving gear 17 is arranged on the main shaft of the travel motor 16 , a driven gear 18 is mounted on the gear shaft 14 , and the driving gear 17 is meshed with the driven gear 18 .

[0038] The welding operation process of the welding device for water conservancy construction engineering of this embodiment is as follows: first, use a crane to hoist two large-diameter steel pipes 100 respectively on two sets of large-diameter steel pipe supporting devices, and support the large-diameter steel pipes 100 through the bottom supporting wheel 5 and two side supporting wheels 6, then fix the annular track 7 to the end of one of the large-diameter steel pipes 100 through the mounting ring 8 and a plurality of top pressure bolts 21; then push the two large-diameter steel pipes 100 toward each other. Since the large-diameter steel pipes 100 are supported on the bottom supporting wheel 5 and the side supporting wheel 6, the bottom supporting wheel 5 and the side supporting wheel 6 are respectively in rolling friction with the large-diameter steel pipe 100, so the force applied is A certain thrust can push the two large-diameter steel pipes 100, and finally the ends of the two large-diameter steel pipes 100 are connected, and the welding head of the submerged arc welding is aligned with the weld between the two large-diameter steel pipes 100; then the travel motor 16 and the submerged arc welding are started, and the travel motor 16 drives the gear shaft 14 to rotate through the meshing transmission of the driving gear 17 and the driven gear 18, and the gear part of the gear shaft 14 is meshed with the outer gear ring 15 on the circular track 7. Finally, driven by the gear shaft 14, the welding carriage moves along the circular track 7, and the welding head of the submerged arc welding welds the weld during the walking process, and finally completes a circle of welding operation.

[0039] like Figure 4-6 As shown, as another embodiment of the present invention, since the large diameter steel pipe 100 is heavy, in order to facilitate the docking operation of two large diameter steel pipes 100, a conveying docking mechanism can also be set, and the conveying docking mechanism includes a high torque dual-axis motor 19 and two transmission shafts 20, the high torque dual-axis motor 19 is installed in the middle of the base 1, and the two transmission shafts 20 are respectively arranged on two groups of large diameter steel pipe supporting devices, and the transmission shaft 20 is installed between the two box-type pedestals 3 of the large diameter steel pipe supporting device by rotation; the two output shafts of the high torque dual-axis motor 19 are respectively connected to the two transmission shafts 20 through couplings;

[0040] The transmission shaft 20 is inserted into the box-type pedestal 3. The two transmission shafts 20 are both provided with a worm section 22. The thread rotation directions of the worm sections 22 on the two transmission shafts 20 are opposite. The worm sections 22 are located in the corresponding box-type pedestal 3.

[0041] A rotating shaft 23 is rotatably mounted in each box-type pedestal 3, the bottom supporting wheel 5 is arranged on the rotating shaft 23, a worm gear 24 and two first bevel gears 25 are also arranged on the rotating shaft 23, and the worm gear 24 is meshed with the worm segment 22 in the box-type pedestal 3;

[0042] The two inclined arm beams 4 connected to the box-type pedestal 3 are both rotatably installed with an inclined shaft body 26, and the two ends of the inclined shaft body 26 are respectively provided with a second bevel gear 27 and a first sprocket 28, and the second bevel gear 27 is meshed with the first bevel gear 25; the end of the inclined arm beam 4 is rotatably installed with an intermediate wheel shaft 29 and a wheel shaft body 30, the side supporting wheel 6 is arranged on the wheel shaft body 30, and the wheel shaft body 30 is also provided with a first gear 31, and the intermediate wheel shaft 29 is provided with a second gear 32 and a second sprocket 33, the second sprocket 33 is connected to the first sprocket 28 by a chain 34, and the second gear 32 is meshed with the first gear 31.

[0043] When two large-diameter steel pipes 100 are placed on two sets of large-diameter steel pipe supporting devices, the ends of the two large-diameter steel pipes 100 are docked through the conveying docking mechanism, and the high-torque dual-axis motor 19 is started at this time. The high-torque dual-axis motor 19 transmits power to the two transmission shafts 20 through two couplings. The transmission shaft 20 drives the worm gear 24 to rotate through the worm segment 22, and the rotating shaft 23 rotates under the drive of the worm gear 24. The bottom supporting wheel 5 is arranged on the rotating shaft 23, so the bottom supporting wheel 5 rotates under the drive of the rotating shaft 23, and the bottom supporting wheel 5 contacts the bottom of the large-diameter steel pipe 100. The rotating bottom supporting wheel 5 can push the large-diameter steel pipe 100 to move;

[0044] At the same time, the first bevel gear 25 rotates with the rotating shaft 23, and the first bevel gear 25 is meshed with the second bevel gear 27 to drive the inclined shaft body 26 to rotate. The inclined shaft body 26 drives the intermediate gear shaft 29 to rotate through the chain transmission between the first sprocket 28 and the second sprocket 33. The intermediate gear shaft 29 is driven between the second gear 32 and the first gear 31 to drive the wheel shaft body 30 to rotate, and finally drives the side support wheel 6 to rotate. The side support wheel 6 is supported on the lower side of the large diameter steel pipe 100, so the rotating side support wheel 6 can also push the large diameter steel pipe 100 to move. The side supporting wheel 6 and the bottom supporting wheel 5 have the same rotation direction. It should also be noted that the transmission ratio of the first bevel gear 25 and the second bevel gear 27, the transmission ratio of the first sprocket 28 and the second sprocket 33, and the transmission ratio of the first gear 31 and the second gear 32 are appropriately changed so that the linear speeds of the side supporting wheel 6 and the bottom supporting wheel 5 are the same. Finally, the side supporting wheel 6 and the bottom supporting wheel 5 can act together on the large diameter steel pipe 100 to push the large diameter steel pipe 100 to move.

[0045] In addition, since the threads of the worm segments 22 on the two transmission shafts 20 are in opposite directions, the two large-diameter steel pipes 100 are eventually pushed to move in opposite directions, thereby completing the docking work.

[0046] like Figure 7As shown, as another embodiment of the present invention, a zigzag welding mechanism can also be provided, and the zigzag welding mechanism can enable the welding head of the submerged arc welding to weld in a zigzag welding path. This zigzag path can make the metal on both sides of the weld be heated more evenly by alternately changing the welding direction, and since each welding starts at a new starting point, this helps to disperse the welding stress, reduce the deformation after welding, and improve the forming of the weld; wherein a mounting box 35 is fixed to the side of the vehicle box body 10, and the zigzag welding mechanism is arranged in the mounting box 35, and the zigzag welding mechanism includes a reciprocating motor 36 and a bracket 37, and the reciprocating motor 36 and the bracket 37 are both installed in the mounting box 35, and a circular wheel disc 38 is fixedly installed on the main shaft of the reciprocating motor 36, and the main shaft of the reciprocating motor 36 is located at the circular wheel disc 38. At a non-center position, a reciprocating shaft body 39 is passed through the bracket 37, and the reciprocating shaft body 39 is arranged in the horizontal direction. The reciprocating shaft body 39 can move along its axial direction on the bracket 37. A through hole is opened on the side wall of the installation box 35, and a sleeve 40 is fixed in the through hole. One end of the reciprocating shaft body 39 passes outward from the sleeve 40, and a fixing clamp 41 is arranged at the end of the reciprocating shaft body 39. The fixing clamp 41 is used to fix and install a welding head 42 for submerged arc welding. A cylindrical head 43 is arranged at the other end of the reciprocating shaft body 39, and a movable wheel 44 is rotatably installed at the lower end of the cylindrical head 43. The movable wheel 44 is located in the circular wheel disc 38, and the wheel surface of the movable wheel 44 contacts the inner arc surface of the circular wheel disc 38; a compression spring 45 is sleeved on the reciprocating shaft body 39, and both ends of the compression spring 45 abut against the bracket 37 and the cylindrical head 43;

[0047] A guide shaft body 46 is also fixed to the upper end of the bracket 37 . The guide shaft body 46 is arranged parallel to the reciprocating shaft body 39 . The upper end of the cylindrical head 43 is arranged on the guide shaft body 46 , and the cylindrical head 43 can slide on the guide shaft body 46 .

[0048] The serrated welding mechanism works synchronously with the welding head 42 and the welding carriage. During the welding operation, the welding head 42 is installed on the fixing clamp 41, the welding head 42 is aligned with the weld, and then the reciprocating motor 36 is started. The reciprocating motor 36 drives the circular wheel disc 38 to rotate in the installation box 35. Since the main shaft of the reciprocating motor 36 is connected to the non-center position of the circular wheel disc 38, the rotation of the circular wheel disc 38 is a non-standard circle, and the movable wheel 44 always conflicts with the inner arc surface of the circular wheel disc 38 under the elastic force of the compression spring 45. Therefore, as the circular wheel disc 38 rotates, the inner arc surface of the circular wheel disc 38 can push the movable wheel 44, and the movable wheel 44 is arranged on the cylindrical head 43, and the cylindrical head 43 is arranged on the guide shaft body 46 and the reciprocating shaft body 39. Therefore, under the push of the circular wheel 38, the cylindrical head 43 can move on the guide shaft 46 and push the reciprocating shaft 39 outward. Under the elastic force of the compression spring 45, the cylindrical head 43 and the reciprocating shaft 39 can be reset. Finally, the reciprocating shaft 39 can reciprocate in the horizontal direction. The welding head 42 is set at the end of the reciprocating shaft 39, so the welding head 42 can reciprocate in the horizontal direction with the reciprocating shaft 39. On the other hand, the mounting box 35 is set on the vehicle box body 10, and the vehicle box body 10 moves in a circular direction, so the welding head 42 also makes a circular motion. Therefore, the motion trajectory of the welding head 42 is a composite motion formed by the combination of horizontal reciprocating motion and circular motion, that is, a zigzag trajectory, to complete welding in a zigzag manner.

[0049] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding device for water conservancy construction engineering, characterized in that: It includes a conveying docking mechanism, a welding mechanism and a base, on which two sets of large-diameter steel pipe supporting devices are arranged symmetrically, and the two sets of large-diameter steel pipe supporting devices are respectively used to support and place two large-diameter steel pipes; Each group of large-diameter steel pipe supporting devices includes a plurality of roller supporting seats, all of which are arranged side by side and spaced apart, and each roller supporting seat includes a box-type pedestal, both sides of which are fixed with oblique arm beams, a bottom supporting wheel is rotatably mounted in the middle of the top surface of the box-type pedestal, and side supporting wheels are rotatably mounted at the ends of the two oblique arm beams; when the large-diameter steel pipe is placed on the large-diameter steel pipe supporting device, the bottom supporting wheel and the two side supporting wheels are all supported on the outer wall of the large-diameter steel pipe; The welding mechanism includes a welding trolley and a circular track. A mounting ring is connected to the side of the circular track. A plurality of threaded holes are opened on the mounting ring. All the threaded holes are arranged in a circular array around the mounting ring. A pressure bolt is threadedly connected in each threaded hole. The mounting ring is located at the outer periphery of the large-diameter steel pipe. The end of the pressure bolt is in pressure contact with the outer wall of the large-diameter steel pipe. The mounting ring can be fixed to the outer periphery of the large-diameter steel pipe through the pressure bolt. The welding carriage is arranged on the outer arc surface of the circular track, and the welding carriage can move in the circumferential direction of the outer arc surface of the circular track, and a submerged arc welding device is arranged on the welding carriage; The welding trolley comprises a trolley box body and a motor box. Annular track grooves are provided on both sides of the circular track. Two legs are fixed on both sides of the trolley box body. Rollers are installed on the legs. The rollers are arranged in the annular track grooves and can roll in the annular track grooves. The submerged arc welding is arranged on the vehicle box body, a gear shaft is rotatably mounted in the vehicle box body, a notch is provided at the bottom of the vehicle box body, an outer gear ring is provided on the outer arc surface of the circular track, and the gear part of the gear shaft is meshed with the outer gear ring after passing through the notch; The motor box is mounted on the vehicle box body, a travel motor is mounted in the motor box, a driving gear is arranged on the main shaft of the travel motor, a driven gear is mounted on the gear shaft, and the driving gear meshes with the driven gear; A mounting box is fixed on the side of the vehicle box body, and a zigzag welding mechanism is installed in the mounting box. The zigzag welding mechanism includes a reciprocating motor and a bracket. The reciprocating motor and the bracket are both installed in the mounting box. A circular wheel disk is fixedly installed on the main shaft of the reciprocating motor, and the main shaft of the reciprocating motor is located at a non-center position of the circular wheel disk. A reciprocating shaft body is penetrated on the bracket, and the reciprocating shaft body is arranged in a horizontal direction. The reciprocating shaft body can move along its axial direction on the bracket. A through hole is opened on the side wall of the mounting box, and a sleeve is fixed in the through hole. One end of the reciprocating shaft body passes outward from the sleeve. A fixing clamp is arranged at the end of the reciprocating shaft body, and the fixing clamp is used to fix and install a welding head for submerged arc welding. A cylindrical head is arranged at the other end of the reciprocating shaft body, and a movable wheel is rotatably installed at the lower end of the cylindrical head. The movable wheel is located in the circular wheel disk, and the wheel surface of the movable wheel contacts the inner arc surface of the circular wheel disk; a compression spring is sleeved on the reciprocating shaft body, and both ends of the compression spring abut against the bracket and the cylindrical head; A guide shaft body is also fixed at the upper end of the bracket, and the guide shaft body is arranged parallel to the reciprocating shaft body. The upper end of the cylindrical head is arranged on the guide shaft body, and the cylindrical head can slide on the guide shaft body; The conveying docking mechanism includes a high-torque dual-axis motor and two transmission shafts. The high-torque dual-axis motor is installed in the middle of the base. The two transmission shafts are respectively arranged on two sets of large-diameter steel pipe supporting devices, and the transmission shafts are installed between two box-type pedestals of the large-diameter steel pipe supporting devices by rotation. The two output shafts of the high-torque dual-axis motor are respectively connected to the two transmission shafts through couplings. The transmission shaft is inserted into the box-type pedestal, and worm segments are arranged on both transmission shafts, and the thread rotation directions of the worm segments on the two transmission shafts are opposite, and the worm segments are located in the corresponding box-type pedestals; A rotating shaft is rotatably installed in each box-type pedestal, the bottom supporting wheel is arranged on the rotating shaft, a worm gear and two first bevel gears are also arranged on the rotating shaft, and the worm gear is meshed with the worm segment in the box-type pedestal; An inclined shaft body is rotatably installed in the two inclined arm beams connected to the box-type pedestal, and a second bevel gear and a first sprocket are respectively provided at both ends of the inclined shaft body, and the second bevel gear is meshed with the first bevel gear; an intermediate wheel shaft and a wheel shaft body are rotatably installed in the end of the inclined arm beam, the side supporting wheel is arranged on the wheel shaft body, and the wheel shaft body is also provided with a first gear, and the intermediate wheel shaft is provided with a second gear and a second sprocket, the second sprocket is connected to the first sprocket by a chain, and the second gear is meshed with the first gear.

Images