Climbing type submerged arc welding trolley

Abstract

The utility model relates to the technical field of submerged-arc welding trolleys, in particular to a climbing type submerged-arc welding trolley, aims to solve the technical problem of overcoming the defects of a trolley and a walking track in the prior art, and is mainly realized through the following technical scheme: the climbing type submerged-arc welding trolley comprises a trolley body, a rack and a welding structure, the welding structure is installed on the rack, the rack is fixed to the vehicle body, front wheels are arranged at the front end of the vehicle body, rear wheels are arranged on the two sides of the rear end of the vehicle body, walking guide rails are arranged below the rear wheels, auxiliary parts are installed on one sides of the rear wheels and comprise auxiliary wheels and auxiliary racks, and the auxiliary wheels and the rear wheels are coaxially arranged. The auxiliary part is arranged beside an original walking structure to assist walking, the defects that an existing trackless trolley is low in walking precision, and a rail guided trolley is prone to slipping are overcome, operation such as trolley climbing is achieved through the auxiliary part, and the whole structure is compact and convenient to disassemble.

Description

Technical Field

[0001] The utility model relates to the technical field of submerged arc welding trolleys, in particular to a climbing type submerged arc welding trolley. Background Art

[0002] A submerged arc welding carriage is a device used for automatic or semi-automatic welding operations. It typically consists of a chassis, drive system, control system, and welding tools. The carriage moves via drive wheels or tracks on the chassis, guiding and moving the welding tools along a predetermined path. The drive system can be an electric motor, pneumatic drive, or hydraulic drive to ensure smooth movement during the welding process.

[0003] In the existing technology, submerged arc welding trolleys usually move on specially designed tracks, and the wheels and the travel tracks are used to achieve movement through friction. Such travel tracks are mostly laid on a horizontal surface and are made of metal materials such as carbon steel plates. They are relatively smooth as a whole, so they are not suitable for welding on sloped surfaces. Although trackless trolleys can achieve climbing operations and can weld freely and flexibly, their path accuracy is low and the trolley cost is high, making them unsuitable for most welding situations. Utility Model Content

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the trolley and the running track in the prior art, thereby providing a climbing type submerged arc welding trolley.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] The trolley is a type of vehicle that is mounted on a frame and has a plurality of control frames movable end contact surfaces. The trolley is a type of vehicle that is mounted on a frame and has a plurality of movable members arranged on the frame. The plurality of movable members are arranged on a frame and a plurality of movable members are arranged on the frame.

[0007] By adopting the above technical solution, the submerged arc welding trolley adds auxiliary parts on the basis of the original structure, overcoming the shortcomings of the existing metal track that is smooth and easy to slip. The meshing connection between the auxiliary rack and the auxiliary wheel also increases the stability of the submerged arc welding trolley. The synchronous movement of the auxiliary wheel and the rear wheel can increase the accuracy of the rail trolley. The auxiliary rack can also be used on sloped surfaces to enable the trolley to achieve a climbing function. The auxiliary parts are connected to the rear wheels and do not affect the welding process after being equipped. The auxiliary parts can be removed during submerged arc welding operations in a horizontal plane. The overall structure is compact and easy to disassemble and assemble.

[0008] Furthermore, the auxiliary wheel is arranged on the side of the rear wheel away from the vehicle body and is clamped on the locking nut. A gap is left between the auxiliary wheel and the rear wheel. A hexagonal locking groove matching the locking nut is provided at the center of the auxiliary wheel. The diameter of the auxiliary wheel is smaller than the diameter of the rear wheel.

[0009] By adopting the above technical solution, the auxiliary wheel is directly clamped on the locking nut, which facilitates the installation of the auxiliary wheel. There is no need to add other installation components to the rear wheel, which reduces the changes to the original structure and reduces the modification cost.

[0010] Furthermore, the rear wheel is provided with a plurality of mounting holes, the number of the mounting holes is an even number, and the mounting holes are arranged in a circular array along the axis of the rear wheel; the auxiliary wheel is provided with a plurality of arc-shaped mounting grooves matching the diameters of the mounting holes corresponding to the mounting holes, and the mounting grooves are arranged in a circular array along the axis of the auxiliary wheel; mounting posts are provided through the mounting grooves and the mounting holes, and the mounting posts have the same diameter as the mounting holes.

[0011] By adopting the above technical solution, since the angle after tightening the nut is not certain, an arc-shaped installation groove is provided. After the installation column passes through the arc-shaped installation groove, it is aligned with the installation hole for installation, which facilitates the matching of the auxiliary wheel and the rear wheel and increases the applicability of the auxiliary wheel installation.

[0012] Furthermore, a coaxial mounting plate is extended from one end of the mounting post away from the vehicle body, the diameter of the mounting plate is larger than the diameter of the mounting post, the mounting plate is arranged in abutment with the outer side surface of the auxiliary wheel, and a plurality of fixing holes are penetrated through one end of the mounting post away from the mounting plate, the fixing holes are arranged in an array along the axis of the mounting post, the axis of the fixing hole is arranged perpendicular to the axis of the mounting post, the mounting posts are arranged in groups of two, and the corresponding fixing holes on the two mounting posts in the same group are penetrated by the same fixing rod.

[0013] By adopting the above technical solution, after the mounting plate abuts against the outer side of the auxiliary wheel, the mounting posts are fixed in pairs by fixing rods to achieve synchronous movement of the auxiliary wheel and the rear wheel, so that when the rear wheel moves, the auxiliary wheel is driven to engage with the auxiliary rack, which can realize the inclined climbing function.

[0014] Furthermore, the walking guide rail is a multi-section splicing structure, and the auxiliary rack is a multi-section clip-on structure. The splicing seam of the walking guide rail and the clip-on seam of the auxiliary rack are staggered. The auxiliary rack includes a branch rack with multiple clip-on settings. A clip-on groove is provided at the end of the same branch rack that contacts the rear wheel first, and a clip-on strip is extended at the end of the same branch rack that contacts the rear wheel later. The clip-on groove and the clip-on strip are arranged in a shape corresponding to each other. The clip-on groove is provided on one side of the branch rack close to the walking guide rail, and the outer side surface of the branch rack close to one end of the clip-on groove is an inclined surface. The distance between the end of the inclined surface that contacts the rear wheel first and the walking guide rail is smaller than the distance between the end of the inclined surface that contacts the rear wheel later and the walking guide rail.

[0015] By adopting the above technical solution, the branch racks are spliced ​​through the snap-in strips and the snap-in grooves, so that they can be spliced ​​according to the length of the welded track, and the overall track is easy to store; the outer inclined surfaces of the snap-in grooves and the snap-in strips can fit more closely when the rear wheels move, and the track connection is tighter without causing the track to be driven off track.

[0016] Furthermore, each of the branch racks has a plurality of clamping blocks extending from one side close to the walking guide rail to clamp to the walking guide rail, and a placement groove is provided on the side of the walking guide rail corresponding to the clamping block, the height of the placement groove is twice the height of the clamping block and the length of the placement groove is equal to the length of the clamping block, and a sliding groove is also extended from the bottom of the placement groove, the sliding groove is arranged along the length direction of the walking guide rail and the extension direction is opposite to the movement direction of the rear wheel, the length of the sliding groove is equal to the length of the clamping block and the height of the sliding groove is equal to the height of the clamping block.

[0017] By adopting the above technical solution, the clamping block cooperates with the placement groove and the sliding groove to realize the fixed connection between the walking guide rail and the branch rack. Since the extension direction of the sliding groove is opposite to the movement direction of the rear wheel, the branch rack can always be abutted in the sliding groove when the trolley moves, thereby ensuring a tight connection between the walking guide rail and the branch rack.

[0018] Furthermore, each branch rack of the auxiliary rack, except for the starting section and the ending section, is provided with a locating pin or one of the locating holes at one end, and another locating pin or another of the locating holes at the other end. The axis of the locating pin is arranged along the length direction of the branch rack, and the length of the locating pin is not greater than the length of the clamping block.

[0019] By adopting the above technical solution, the presence of the positioning pin and the positioning hole can enable the two branch racks to be better docked and positioned. The length of the positioning pin is not greater than the length of the clamping block to avoid the positioning pin being too long and protruding after the clamping block is inserted into the sliding groove, affecting the splicing between the two branch racks and avoiding a gap in the middle.

[0020] Furthermore, screw holes are provided at both ends of the branch rack, the axes of the screw holes are perpendicular to the upper surface of the branch rack, the screw holes are arranged on the side of the branch rack away from the walking guide rail, and positioning screws are provided in the screw holes.

[0021] By adopting the above technical solution, positioning screws are passed through the screw holes to fix each branch rack to the ground or bottom surface, thereby preventing the branch rack from being lifted up due to the engagement of the auxiliary wheel when the trolley moves, thereby limiting the branch rack in the vertical direction.

[0022] In summary, the technical solution of the present utility model has the following advantages:

[0023] 1. The utility model provides a climbing submerged arc welding trolley. The submerged arc welding trolley adds auxiliary parts on the basis of the original structure, which overcomes the shortcomings of the existing metal track that is smooth and easy to slip. The meshing connection between the auxiliary rack and the auxiliary wheel also increases the stability of the submerged arc welding trolley. The synchronous movement of the auxiliary wheel and the following wheel can increase the accuracy of the rail trolley. The auxiliary rack can also be used on sloped surfaces to enable the trolley to achieve a climbing function.

[0024] 2. The climbing submerged arc welding trolley provided by the utility model has a walking guide rail and an auxiliary rack connected and fixed by a placement groove and a clamping block, adjacent branch racks are aligned and positioned by positioning pins and positioning holes, and a clamping strip with an inclined surface is clamped to the clamping groove, and the branch rack is also vertically limited to the bottom surface by positioning screws and screw holes, so that the track can be laid tightly and stably from multiple aspects and angles to ensure a smooth subsequent welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is a schematic diagram of the overall structure of a climbing submerged arc welding trolley provided in one embodiment of the present utility model;

[0027] Figure 2 A schematic diagram of the partial structure of a vehicle body and auxiliary components provided in one embodiment of the present utility model;

[0028] Figure 3 This is a partial structural diagram of the rear wheel and auxiliary wheels provided in one embodiment of the present utility model;

[0029] Figure 4This is a schematic structural diagram of an auxiliary rack provided in one embodiment of the present utility model;

[0030] Figure 5 This is a schematic diagram of the partial structure of a branch rack provided in one embodiment of the present utility model.

[0031] Description of reference numerals:

[0032] 1. Vehicle body; 11. Front wheel; 12. Rear wheel; 121. Mounting hole; 13. Drive shaft; 131. Locking nut; 2. Frame; 3. Welding structure; 31. Wire feeder; 32. Control box; 33. Flux box; 34. Welding gun parts; 4. Traveling guide rail; 41. Placement slot; 42. Slide slot; 5. Auxiliary parts; 6. Auxiliary wheel; 61. Locking slot; 62. Mounting slot; 63. Mounting column; 631. Mounting plate; 632. Fixing hole; 633. Fixing rod; 7. Auxiliary rack; 71. Branch rack; 711. Snap-fit ​​slot; 712. Snap-fit ​​strip; 713. Locating pin; 714. Locating hole; 715. Screw hole; 7151. Locating screw; 716. Snap-fit ​​block. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] A climbing type submerged arc welding trolley, such as Figure 1 and Figure 2As shown, the vehicle comprises a vehicle body 1, a frame 2, and a welding structure 3. The welding structure 3 is mounted on the frame 2, which is fixed to the vehicle body 1. The welding structure 3 includes a wire feeder 31, a control box 32, a flux tank 33, and a welding gun 34. The wire feeder 31 and the control box 32 are located at the left end of the frame 2, facing each other front to back with respect to the frame 2. The flux tank 33 and the welding gun 34 are located at the right end of the frame 2, facing each other front to back with respect to the frame 2. A front wheel 11 is provided at the right end of the vehicle body 1, and rear wheels 12 are provided at the front and rear ends of the left end of the vehicle body 1. Travel guide rails 4 are provided below the rear wheels 12. Auxiliary components 5 are installed on the outside of the rear wheels 12. In this embodiment, the auxiliary components 5 are installed only next to the front rear wheels 12. The auxiliary components 5 on each side include an auxiliary wheel 6 and an auxiliary rack 7. The auxiliary wheel 6 is coaxially arranged with the rear wheel 12, and the auxiliary component 5 is clamped with the rear wheel 12 and does not affect the welding process after being equipped. The auxiliary component 5 can be removed during submerged arc welding operations in a horizontal plane. The overall structure is compact and easy to assemble and disassemble. The auxiliary rack 7 is arranged below the auxiliary wheel 6 and is meshed with the auxiliary wheel 6. The auxiliary rack 7 is arranged parallel to the travel guide rail 4 and is clamped on the side of the travel guide rail 4 away from the vehicle body 1. The submerged arc welding trolley adds the auxiliary component 5 to the original structure, which overcomes the shortcomings of the existing metal rails that are smooth and easy to slip. The meshing connection between the auxiliary rack 7 and the auxiliary wheel 6 also increases the stability of the submerged arc welding trolley. The synchronous movement of the auxiliary wheel 6 and the rear wheel 12 can increase the accuracy of the rail-mounted trolley. The auxiliary rack 7 can also be used on sloped surfaces to enable the trolley to achieve a climbing function.

[0035] like Figure 2 and Figure 3 As shown, a drive shaft 13 extends between the two rear wheels 12. Both ends of the drive shaft 13 extend outside the vehicle body 1 and are mounted with hexagonal locking nuts 131. An auxiliary wheel 6 is positioned on the side of the rear wheel 12 away from the vehicle body 1 and is snap-fitted to the locking nuts 131. A gap is left between the auxiliary wheel 6 and the rear wheel 12. A hexagonal locking groove 61 is provided at the center of the auxiliary wheel 6, which matches the locking nuts 131. The diameter of the auxiliary wheel 6 is smaller than that of the rear wheel 12. The auxiliary wheel 6 is directly snapped onto the locking nuts 131, facilitating its installation. This eliminates the need for additional mounting components on the rear wheel 12, reduces modifications to the existing structure, and reduces modification costs.

[0036] The rear wheel 12 is provided with an even number of mounting holes 121, six in this embodiment. These holes 121 are arranged in a circular array along the axis of the rear wheel 12. Corresponding to these holes 121, the auxiliary wheel 6 is provided with a plurality of arcuate mounting slots 62 of matching diameters. These slots 62 are arranged in a circular array along the axis of the auxiliary wheel 6. Mounting posts 63 are provided through the mounting slots 62 and the mounting holes 121, and the mounting posts 63 have the same diameter as the mounting holes 121. Because the angle after tightening the nut is not constant, the arcuate mounting slots 62 are provided. After the mounting posts 63 pass through the arcuate mounting slots 62, they are aligned with the mounting holes 121 for installation. This facilitates the matching of the auxiliary wheel 6 with the rear wheel 12, increasing the adaptability of the auxiliary wheel 6.

[0037] A coaxial mounting plate 631 extends from the outer end of the mounting post 63 . The diameter of the mounting plate 631 is larger than that of the mounting post 63 . The mounting plate 631 is disposed in contact with the outer side of the auxiliary wheel 6 , thereby fixing the auxiliary wheel 6 and the rear wheel 12 .

[0038] A plurality of fixing holes 632 are formed through the end of the mounting post 63, distal from the mounting plate 631. These fixing holes 632 are arranged in an array along the axis of the mounting post 63, with the axis of the fixing holes 632 perpendicular to the axis of the mounting post 63. The mounting posts 63 are arranged in groups of two, and in this embodiment, are divided into three groups: upper, left, and right. The corresponding fixing holes 632 of the two mounting posts 63 in the same group are penetrated by a common fixing rod 633, the outer wall of which abuts the side wall of the rear wheel 12. By securing the mounting posts 63 in pairs with the fixing rod 633, the auxiliary wheel 6 and the rear wheel 12 can be synchronized in motion. As the rear wheel 12 moves, the auxiliary wheel 6 engages with the auxiliary rack 7, enabling the incline climbing function.

[0039] like Figure 2 、 Figure 4 and Figure 5 As shown, the running rail 4 is a multi-section spliced ​​structure, and the auxiliary rack 7 includes multiple branch racks 71 that are snap-fitted together. The splicing seams of the running rail 4 and the snap-fit ​​seams of the auxiliary rack 7 are offset. The branch racks 71 are spliced ​​together by snap-fit ​​strips 712 and snap-fit ​​grooves 711, allowing for splicing according to the length of the welded rail, making the entire rail easy to store.

[0040] The same branch rack 71 has a snap-in slot 711 on the inner side of its left end, and a snap-in strip 712 extending rightward from the inner side of its right end. The snap-in slot 711 and snap-in strip 712 are configured to correspond in shape and are both located on the side of the branch rack 71 near the running rail 4. The outer side of the left end of the same branch rack 71 is a sloped surface, with the distance between the left end of the slope and the running rail being smaller than the distance between the right end of the slope and the running rail. The right end of the same branch rack 71 has a sloped slot that matches the sloped surface. The outer slopes of the snap-in slot 711 and the snap-in strip 712 allow for a closer fit when the rear wheel 12 moves. As the rear wheel 12 moves to the right, it exerts a force pushing the branch rack 71 to the left, thereby pushing the two adjacent branch racks 71 into alignment, making the track connection tighter and reducing the possibility of the track being driven off track.

[0041] like Figure 4 As shown, each branch rack 71 has a plurality of engaging blocks 716 extending from one side of the walking guide rail 4 to engage with the walking guide rail 4. A placement slot 41 is provided on the side of the walking guide rail 4 corresponding to the engaging blocks 716. The placement slot 41 is twice as high as the engaging blocks 716 and is equal in length to the engaging blocks 716. A sliding slot 42 extends from the bottom of the placement slot 41. The sliding slot 42 is arranged along the length of the walking guide rail 4 and extends in a direction opposite to the direction of movement of the rear wheel 12. The sliding slot 42 is equal in length to the engaging blocks 716 and is equal in height to the engaging blocks 716. The engaging blocks 716 cooperate with the placement slot 41 and the sliding slot 42 to securely connect the walking guide rail 4 to the branch rack 71. Since the sliding slot 42 extends in a direction opposite to the direction of movement of the rear wheel 12, the branch rack 71 can always be abutted against the sliding slot 42 during movement of the trolley, thereby ensuring a tight connection between the walking guide rail 4 and the branch rack 71.

[0042] like Figure 3 and Figure 4 As shown, screw holes 715 are formed at both ends of the branch racks 71. The axes of the screw holes 715 are perpendicular to the upper surface of the branch racks 71. The screw holes 715 are located on the side of the branch racks 71 away from the travel guide rail 4. Positioning screws 7151 are inserted through the screw holes 715 to secure the branch racks 71 to the ground or the surface to be welded. The positioning screws 7151 pass through the screw holes 715 to secure each branch rack 71 to the ground or bottom surface, thereby preventing the branch racks 71 from being lifted due to the engagement of the auxiliary wheels 6 during the movement of the trolley, thereby limiting the vertical position of the branch racks 71.

[0043] like Figure 3 and Figure 5As shown, each branch rack 71 of the auxiliary rack 7, except for the starting section and the ending section, is provided with one of the positioning pins 713 or the positioning holes 714 at one end, and the other end is provided with the other of the positioning pins 713 or the positioning holes 714. In this embodiment, the positioning pins 713 are provided in the clamping groove 711 at the left end, and the positioning holes 714 are provided on the clamping strip 712 at the right end. The axis of the positioning pins 713 is provided along the length direction of the branch rack 71, and the length of the positioning pins 713 is not greater than the length of the clamping block 716. The presence of the positioning pins 713 and the positioning holes 714 enables the two branch racks 71 to be better docked and positioned. The length of the positioning pins 713 is not greater than the length of the clamping block 716 to avoid the positioning pins 713 from being too long and protruding after the clamping block 716 is clamped into the sliding groove 42, affecting the splicing between the two branch racks 71 and avoiding a gap in the middle.

[0044] The working principle and usage of this climbing submerged arc welding trolley are as follows: the auxiliary parts 5 are selected according to the welding surface conditions. When in use, the auxiliary wheel 6 is first clamped on the outside of the rear wheel 12, and then the mounting column 63 is penetrated, and then the adjacent mounting columns 63 are fixed in pairs using the fixing rod 633; ​​the walking guide rail 4 and the auxiliary rack 7 are laid according to the welding length. When splicing, the walking guide rail 4 is laid first, and then the branch rack 71 is clamped with the side of the walking guide rail 4 and then slid to the left. The branch racks 71 of the required length are laid in sequence and the ends of the two branch racks 71 are connected end to end and aligned.

[0045] The foregoing description shows and describes preferred embodiments of the present invention. As previously mentioned, it should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the present invention as taught herein or through the techniques or knowledge of the relevant art. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be protected by the claims appended hereto.

Claims

1. A climbing type submerged arc welding trolley, comprising a vehicle body (1), a frame (2) and a welding structure (3), wherein the welding structure (3) is mounted on the frame (2), and the frame (2) is fixed on the vehicle body (1), and the welding structure (3) comprises a wire feeding component (31), a control box (32), a flux box (33) and a welding gun component (34), wherein the wire feeding component (31) and the control box (32) are arranged at one end of the frame (2) and are arranged relative to the frame (2), and the flux box (33) and the welding gun component (34) are arranged at the other end of the frame (2) and are arranged relative to the frame (2), characterized in that: Also includes: A front wheel (11) is provided at one end of the vehicle body (1), and rear wheels (12) are provided on both sides of the other end of the vehicle body (1). A drive shaft (13) is provided between the two rear wheels (12). The drive shaft (13) extends out of the vehicle body (1) and is provided with hexagonal locking nuts (131) at both ends. A walking guide rail (4) is provided below the rear wheels (12). An auxiliary component (5) is provided on one side of one or both rear wheels (12). The auxiliary component (5) on each side includes an auxiliary wheel (6) and an auxiliary rack (7). The auxiliary wheel (6) is coaxially arranged with the rear wheel (12). The auxiliary rack (7) is provided below the auxiliary wheel (6) and is meshed with the auxiliary wheel (6). The auxiliary rack (7) is provided in parallel with the walking guide rail (4) and is clamped on the side of the walking guide rail (4) away from the vehicle body (1).

2. A climbing type submerged arc welding trolley according to claim 1, characterized in that: The auxiliary wheel (6) is arranged on a side of the rear wheel (12) away from the vehicle body (1) and is clamped and mounted on a locking nut (131). A gap is left between the auxiliary wheel (6) and the rear wheel (12). A hexagonal locking groove (61) matching the locking nut (131) is provided at the center of the auxiliary wheel (6). The diameter of the auxiliary wheel (6) is smaller than that of the rear wheel (12).

3. A climbing type submerged arc welding trolley according to claim 2, characterized in that: The rear wheel (12) is provided with a plurality of mounting holes (121), the number of the mounting holes (121) is an even number, and the mounting holes (121) are arranged in a circular array along the axis of the rear wheel (12); the auxiliary wheel (6) is provided with a plurality of arc-shaped mounting grooves (62) whose diameters match the mounting holes (121), corresponding to the mounting holes (121); the mounting grooves (62) are arranged in a circular array along the axis of the auxiliary wheel (6); mounting columns (63) are provided on the mounting grooves (62) and the mounting holes (121), and the mounting columns (63) have the same diameter as the mounting holes (121).

4. The climbing submerged arc welding trolley according to claim 3, characterized in that: A coaxial mounting plate (631) extends from one end of the mounting column (63) away from the vehicle body (1). The diameter of the mounting plate (631) is larger than the diameter of the mounting column (63). The mounting plate (631) is arranged in contact with the outer side surface of the auxiliary wheel (6). A plurality of fixing holes (632) are provided through one end of the mounting column (63) away from the mounting plate (631). The fixing holes (632) are arranged in an array along the axis of the mounting column (63). The axes of the fixing holes (632) are arranged perpendicular to the axis of the mounting column (63). The mounting columns (63) are arranged in pairs in a group, and the corresponding fixing holes (632) on the two mounting columns (63) in the same group are penetrated by a same fixing rod (633).

5. The climbing submerged arc welding trolley according to claim 1, characterized in that: The walking guide rail (4) is a multi-section splicing structure, the auxiliary rack (7) is a multi-section clamping structure, the splicing seam of the walking guide rail (4) and the clamping seam of the auxiliary rack (7) are staggered, the auxiliary rack (7) comprises a branch rack (71) with a multi-section clamping arrangement, the end of the branch rack (71) that the rear wheel (12) contacts first is provided with a clamping groove (711), and the end of the branch rack (71) that the rear wheel (12) contacts later is extended A clamping strip (712) is provided, the clamping groove (711) and the clamping strip (712) are arranged in a shape corresponding to each other, the clamping groove (711) is provided on a side of the branch rack (71) close to the walking guide rail (4), the outer side surface of the branch rack (71) close to one end of the clamping groove (711) is an inclined surface, and the distance between the end of the inclined surface where the rear wheel (12) first contacts and the walking guide rail (4) is smaller than the distance between the end of the inclined surface where the rear wheel (12) later contacts and the walking guide rail (4).

6. The climbing submerged arc welding trolley according to claim 5, characterized in that: A plurality of clamping blocks (716) extend from one side of each branch rack (71) close to the walking guide rail (4) and are clamped with the walking guide rail (4). A placement groove (41) is provided on the side of the walking guide rail (4) corresponding to the clamping block (716). The height of the placement groove (41) is twice the height of the clamping block (716), and the length of the placement groove (41) is equal to the length of the clamping block (716). A sliding groove (42) extends from the bottom of the placement groove (41). The sliding groove (42) is arranged along the length direction of the walking guide rail (4) and the extension direction is opposite to the movement direction of the rear wheel (12). The length of the sliding groove (42) is equal to the length of the clamping block (716), and the height of the sliding groove (42) is equal to the height of the clamping block (716).

7. The climbing submerged arc welding trolley according to claim 6, characterized in that: Each branch rack (71) of the auxiliary rack (7) except the starting section and the ending section is provided with one of the positioning pins (713) or the positioning holes (714) at one end, and the other end is provided with the other of the positioning pins (713) or the positioning holes (714). The axis of the positioning pin (713) is arranged along the length direction of the branch rack (71), and the length of the positioning pin (713) is not greater than the length of the clamping block (716).

8. The climbing submerged arc welding trolley according to claim 7, characterized in that: Screw holes (715) are also provided at both ends of the branch rack (71), the axes of the screw holes (715) are perpendicular to the upper surface of the branch rack (71), the screw holes (715) are arranged on the side of the branch rack (71) away from the walking guide rail (4), and positioning screws (7151) are provided in the screw holes (715).

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