Welding support tool

Abstract

The utility model discloses a welding support tool and relates to the technical field of welding, and the welding support tool comprises a vertical frame, a plurality of connecting pipe assemblies and a plurality of fixing and limiting parts. The plurality of connecting pipe assemblies comprise a first pipe assembly and a second pipe assembly; a plurality of fixing and limiting parts are additionally arranged and movably mounted on the connecting pipe assembly, the fixing and limiting parts comprise clamping parts and limiting parts, the clamping parts and the limiting parts are mounted on the first pipe assembly and the second pipe assembly respectively, and the clamping parts and the limiting parts can be used for limiting pipe fittings or plate fittings, so that in the test piece mounting process of a welder, the pipe fittings or the plate fittings can be prevented from being damaged; the test piece only needs to be fixed on the corresponding clamping piece or the limiting piece, parts do not need to be continuously replaced, and more time and labor are saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding technical field, especially a kind of welding support tool. BACKGROUND

[0002] At present, in order to improve the welding skill level, ensure the equipment welding quality, in the welder qualification examination, especially in the civil nuclear safety equipment welder qualification examination, different welding methods require various different specifications and models of test pieces, and the test piece to be welded can be pipe fitting or plate piece.

[0003] The prior art uses welding support to fix test piece for welding. But the existing welding support is mostly suitable for one test piece, which leads to the need of installing pipe fitting welding fixing device when welding pipe fitting, and replacing plate piece welding fixing device when welding plate piece, so that various parts are frequently replaced during the process of welder installing test piece, which is time-consuming and laborious. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the problem that the existing welding support is mostly suitable for one test piece, which leads to the need of frequently replacing various parts during the process of welder installing test piece.

[0005] To achieve the above-mentioned purpose, the utility model provides a kind of welding support tool, comprising:

[0006] Stand;

[0007] A plurality of connecting pipe assemblies, the plurality of connecting pipe assemblies are movably installed on the stand, and the plurality of connecting pipe assemblies are arranged at intervals, the plurality of connecting pipe assemblies include first pipe assembly and second pipe assembly; and

[0008] A plurality of fixed limiters, the plurality of fixed limiters are movably installed on the connecting pipe assembly, the plurality of fixed limiters include clamping piece and limiting piece, the clamping piece and the limiting piece are installed on the first pipe assembly and the second pipe assembly respectively.

[0009] In an embodiment, the limiting piece includes first limiting piece and second limiting piece, the second pipe assembly includes first horizontal pipe and second horizontal pipe, the first horizontal pipe is arranged opposite to the second horizontal pipe, the first limiting piece is movably installed on the first horizontal pipe, and the second limiting piece is movably installed on the second horizontal pipe.

[0010] In an embodiment, the connecting pipe assembly further comprises a third pipe assembly, the fixing limiting member further comprises a plum-blossom stake fixing member, the third pipe assembly is installed on the stand and is arranged relative to the first horizontal pipe, the third pipe assembly is located above the second horizontal pipe, and the plum-blossom stake fixing member is installed on the third pipe assembly through fasteners.

[0011] In an embodiment, the clamping member comprises a positioning plate and two clamping portions, the two clamping portions are arranged opposite to each other on the positioning plate, and the two clamping portions and the positioning plate enclose a positioning groove.

[0012] In an embodiment, the first limiting member comprises a fixing pipe and two anti-dropping portions, the two anti-dropping portions are arranged opposite to each other and are connected with the fixing pipe, the fixing pipe is installed on the first horizontal pipe through fasteners, and the two anti-dropping portions are arranged parallel to the first horizontal pipe.

[0013] In an embodiment, the stand comprises a base and a straight pipe, and the straight pipe is installed vertically on the base.

[0014] In an embodiment, the first pipe assembly, the first horizontal pipe, the second horizontal pipe and the third pipe assembly are each provided with a sleeve pipe and a support pipe, the sleeve pipe is sleeved on the straight pipe, the support pipe is fixedly connected with the sleeve pipe and is arranged perpendicularly relative to the straight pipe.

[0015] In an embodiment, the welding support tool further comprises a plurality of anti-falling members, the plurality of anti-falling members are respectively arranged below the sleeve pipe of the first pipe assembly, below the sleeve pipe of the first horizontal pipe and below the sleeve pipe of the second horizontal pipe.

[0016] In an embodiment, the welding support tool further comprises an argon filling device, the argon filling device is installed on the stand and is arranged close to the base.

[0017] In an embodiment, the argon filling device and the second limiting member are provided with an input pipe, the input pipe is movably installed on the straight pipe or the second horizontal pipe, the input pipe is connected with an external gas input device, one end of the input pipe away from the straight pipe is provided with an exhaust hole, and one end of the input pipe close to the gas input device is provided with a filter screen.

[0018] The technical scheme of the utility model discloses a plurality of connecting pipe assemblies are arranged on the stand, the plurality of connecting pipe assemblies are arranged at intervals, the plurality of connecting pipe assemblies include a first pipe assembly and a second pipe assembly, a plurality of fixing limit pieces are additionally arranged, the plurality of fixing limit pieces are movably installed on the connecting pipe assembly, the plurality of fixing limit pieces include a clamping piece and a limit piece, the clamping piece and the limit piece are installed on the first pipe assembly and the second pipe assembly respectively, the clamping piece and the limit piece can be used for limiting the plate piece or the pipe piece, and then during the installation of the test piece by the welder, only need to fix the test piece to the corresponding clamping piece or limit piece, without constantly replacing parts, more time and energy are saved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the structure shown in the drawings without the creative labor for the ordinary skilled in the art.

[0020] Figure 1 The structural schematic diagram of an embodiment of the welding support tool provided by the utility model is shown in the figure.

[0021] Figure 2 The structural schematic diagram of an embodiment of the stand in the welding support tool provided by the utility model is shown in the figure.

[0022] Figure 3 The structural schematic diagram of an embodiment of the first pipe assembly in the welding support tool provided by the utility model is shown in the figure.

[0023] Figure 4 The structural schematic diagram of an embodiment of the first limit piece in the welding support tool provided by the utility model is shown in the figure.

[0024] Figure 5 The structural schematic diagram of an embodiment of the plum-blossom pile fixing piece in the welding support tool provided by the utility model is shown in the figure.

[0025] Figure 6 The structural schematic diagram of an embodiment of the second pipe assembly and the second limit piece in the welding support tool provided by the utility model is shown in the figure.

[0026] Figure 7 The structural schematic diagram of an embodiment of the second limit piece in the welding support tool provided by the utility model is shown in the figure.

[0027] EXPLANATION OF DRAWINGS:

[0028] 100, welding support tool, 10, stand, 11, base, 12, straight pipe,

[0029] 20, connecting pipe assembly; 21, first pipe assembly; 210, sleeve pipe; 211, support pipe; 22, second pipe assembly; 220, first cross pipe; 221, second cross pipe; 2210, positioning inner pipe; 23, third pipe assembly;

[0030] 30, fixing limiting piece; 31, clamping piece; 310, positioning plate; 311, clamping part; 32, limiting piece; 320, first limiting piece; 321, fixed pipe; 322, anti-dropping part; 323, second limiting piece; 3230, positioning head; 3231, insertion pipe; 3232, positioning handle; 324, input pipe; 33, hexagonal pile fixing piece; 330, fixed socket; 331, pipe foot; 332, locking piece;

[0031] 40, argon filling device;

[0032] 50, anti-falling piece.

[0033] The realization, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0035] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0036] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0037] The prior art uses a welding support to fix the test piece for welding. However, the existing welding support is mostly suitable for only one type of test piece, so that when welding pipe fittings, a welding fixing device for pipe fittings needs to be installed, and when welding plate fittings, a welding fixing device for plate fittings needs to be replaced, thereby making the welder frequently replace various parts during the installation of the test piece, which is time-consuming and laborious.

[0038] The utility model provides a kind of welding support tool 100. Please refer to Figure 1 In an embodiment of the utility model, the welding support tool 100 provided by the utility model includes:

[0039] The stand 10;

[0040] A plurality of connecting pipe assemblies 20 are movably installed on the stand 10, and the plurality of connecting pipe assemblies 20 are arranged at intervals, and the plurality of connecting pipe assemblies 20 include a first pipe assembly 21 and a second pipe assembly 22.

[0041] A plurality of fixing limit pieces 30 are movably installed on the connecting pipe assemblies 20, and the plurality of fixing limit pieces 30 include a clamping piece 31 and a limiting piece 32, the clamping piece 31 is used for clamping a plate fitting, and the limiting piece 32 is used for limiting a pipe fitting, and the clamping piece 31 and the limiting piece 32 are respectively installed on the first pipe assembly 21 and the second pipe assembly 22.

[0042] The technical scheme of the utility model discloses a plurality of connecting pipe assemblies 20 are installed on the stand 10, the plurality of connecting pipe assemblies 20 are arranged at intervals, the plurality of connecting pipe assemblies 20 include first pipe assembly 21 and second pipe assembly 22, the utility model discloses a technical scheme still adds a plurality of fixed limit parts 30, the plurality of fixed limit parts 30 are movably installed on the connecting pipe assembly 20, the plurality of fixed limit parts 30 include clamp 31 and limit part 32, the clamp 31 and the limit part 32 are installed on first pipe assembly 21 and second pipe assembly 22 respectively, the clamp 31 and the limit part 32 are used to limit board piece or pipe fitting, and then in the process of installing test piece of welder, only need to fix test piece to corresponding clamp 31 or the limit part 32, do not need to change spare parts ceaselessly, and it is more time-saving and labor-saving.

[0043] In an embodiment, the test piece to be welded can be a pipe fitting or a board piece. In order to fix the test piece to be welded on the stand 10, the first pipe assembly 21 and the second pipe assembly 22 are installed on the stand 10, so that the clamp 31 is installed on the first pipe assembly 21 and the limit part 32 is installed on the second pipe assembly 22. The board piece can be clamped into the clamp 31, so that the board piece is fixed on the stand 10, thereby facilitating the welding of the board piece; the pipe fitting can also be sleeved on the limit part 32, and the pipe fitting is limited on the stand 10, thereby facilitating the welding of the pipe fitting, and the back of the weld of the pipe fitting can be protected by inert gas. The utility model can fix the board piece and the pipe fitting on the stand 10, thereby facilitating the subsequent welding operation of butt joint or corner joint of the board piece to be welded and another board piece, or the welding operation of various combinations such as butt joint, corner joint or obstacle welding of the pipe fitting to be welded and another pipe fitting.

[0044] Further, the limit part 32 includes a first limit part 320 and a second limit part 323, the second pipe assembly 22 includes a first horizontal pipe 220 and a second horizontal pipe 221, the first horizontal pipe 220 is arranged opposite to the second horizontal pipe 221, the first limit part 320 is movably installed on the first horizontal pipe 220, and the second limit part 323 is movably installed on the second horizontal pipe 221.

[0045] Specifically, in an embodiment, as shown in Figure 6 and Figure 7As shown, the second transverse pipe 221 is provided with a positioning inner pipe 2210, the second limiting member 323 comprises a positioning head 3230 and a pipe 3231, the pipe 3231 is fixedly connected with the positioning head 3230, the positioning head 3230 is fixed with the positioning inner pipe 2210 by screws, and the pipe 3231 can be inserted into the pipe 3231. The positioning head 3230 is provided with a positioning handle 3232 away from the pipe to be welded, so as to hold the positioning handle 3232 and insert the pipe to be welded with the positioning head 3230.

[0046] The pipe to be welded can be inserted into the second limiting member 323, so that the pipe can be welded on the second limiting member 323. In order to protect the pipe during welding, the second transverse pipe 221 is connected with an external gas input device, the gas input device fills inert gas into the second transverse pipe 221 and flows into the pipe, the inert gas discharges the air in the second transverse pipe 221 and the pipe, thereby preventing the air from being left in the pipe and the pipe from being oxidized during welding.

[0047] In an embodiment, the first limiting member 320 can be designed as two clamping plate structures, the plate to be welded can be clamped on the first limiting member 320, and the screws can pass through the side of the first limiting member 320 and press against the plate to be welded, so that the plate to be welded is fixed between the two clamping plates.

[0048] Optionally, the connecting pipe assembly 20 further comprises a third pipe assembly 23, the fixing limiting member 30 further comprises a quill limiting member 32, the third pipe assembly 23 is installed on the stand 10 and is arranged relative to the first transverse pipe 220, the third pipe assembly 23 is located above the second transverse pipe 221, and the quill fixing member 33 is installed on the third pipe assembly 23 by fasteners.

[0049] The third pipe assembly 23, the first pipe assembly 21, the first transverse pipe 220 and the second transverse pipe 221 are arranged in a staggered manner on the stand 10. Specifically, the third pipe assembly 23 can be arranged on the first transverse pipe 220, and the third pipe assembly 23 is located on one side of the stand 10, and the first transverse pipe 220 is located on the other side of the stand 10, so as to avoid that the first limiting member 320 on the first transverse pipe 220 hinders the quill fixing member 33. In an embodiment, the quill fixing member 33 is provided with a supporting leg and a fixing seat, the supporting leg is connected with the third pipe assembly 23, and the fixing seat is installed at an end of the supporting leg away from the third pipe assembly 23. The fixing seat can be used to limit the pipe in the fixing groove of the fixing seat.

[0050] In an embodiment, the first limiting member 320 can be designed as two clamping plate structures, the plate to be welded can be clamped on the first limiting member 320, and the screws can pass through the side of the first limiting member 320 and press against the plate to be welded, so that the plate to be welded is fixed between the two clamping plates.Figure 5 As shown, the plum-pudding pile fixing member 33 is provided with a plurality of tube feet 331 and a fixed tube interface 330, the plurality of tube feet are arranged around the fixed tube interface 330, the fixed tube interface 330 is movably installed with a locking member, the pipe to be welded can be inserted into the inside of the fixed tube interface 330, and then the locking member 332 of the fixed tube interface 330 penetrates the side of the fixed tube interface 330 and abuts against the pipe to be welded, the pipe to be welded is fixed in the fixed tube interface 330 and is arranged in parallel with the plurality of tube feet 331.

[0051] In an embodiment, the clamping member 31 comprises a positioning plate 310 and two clamping portions 311, the two clamping portions 311 are oppositely arranged on the positioning plate 310, and the two clamping portions 311 and the positioning plate 310 enclose a positioning groove 312. Specifically, as shown in Figure 4 One of the clamping portions 311 can be two square pressing blocks with relatively short length, and the other clamping member 31 can be a rectangular pressing block with relatively long length. The test piece 60 comprises a mounting plate and a pipe structure, the mounting plate is clamped in the positioning groove 312, so that the pipe structure is limited in the positioning groove 312. The two square pressing blocks and the rectangular pressing block together abut against the mounting plate of the test piece 60 to limit the test piece 60 from falling off, and then a screw penetrates the side of the long strip-shaped pressing block and abuts against the test piece 60, so that the test piece 60 is fixed in the positioning groove 312 and does not fall off.

[0052] The clamping member 31 is installed at the end of the first pipe assembly 21 away from the stand 10, the two clamping portions 311 and the positioning plate 310 of the clamping member 31 enclose an opening-up positioning groove, so as to clamp the plate member into the positioning groove.

[0053] In an embodiment, as shown in Figure 1 The first limiting member 320 comprises a fixed tube 321 and two anti-falling portions 322, the two anti-falling portions 322 are oppositely arranged and connected with the fixed tube 321, the fixed tube 321 is installed on the first horizontal pipe 220 by a fastener, and the two anti-falling portions 322 are arranged in parallel with the first horizontal pipe 220. The fastener is a screw.

[0054] Further, the first horizontal pipe 220 is provided with at least two fixing holes, a fastener can be used to penetrate the fixing hole to install the fixed tube 321 on the first horizontal pipe 220. The fixing hole and the fastener cooperate to play a positioning role, which ensures the consistent position of the first limiting member 320 installed on the first horizontal pipe 220, thereby indirectly ensuring that the position deviation of the pipe member fixed on the first horizontal pipe 220 is small, avoiding the need for pipe number marking for positioning operation.

[0055] As shown in Figure 2As shown in the drawings, in an embodiment, the stand 10 comprises a base 11 and a straight pipe 12 vertically mounted on the base 11.

[0056] As shown in the drawings, in an embodiment, the first pipe assembly 21, the first cross pipe 220, the second cross pipe 221 and the third pipe assembly 23 are each provided with a sleeve pipe 210 and a support pipe 211, the sleeve pipe 210 being sleeved on the straight pipe 12, and the support pipe 211 being fixedly connected with the sleeve pipe 210 and vertically arranged relative to the straight pipe 12. Figure 3

[0057] Specifically, the first limiting piece 320 is mounted on the support pipe 211 of the first cross pipe 220, the second limiting piece 323 is mounted on the support pipe 211 of the second cross pipe 221, and the clamping piece 31 is mounted on the first pipe assembly 21. In order to avoid the first limiting piece 320, the second limiting piece 323 and the clamping piece 31 from interfering with each other, the first cross pipe 220, the second cross pipe 221 and the first pipe assembly 21 are arranged in a staggered manner on the stand 10. The first cross pipe 220 and the first pipe assembly 21 are arranged in a spaced manner on one side of the stand 10, and the second cross pipe 221 is arranged on the other side of the stand 10.

[0058] In an embodiment, the welding support tool 100 further comprises a plurality of anti-falling pieces 50, which are respectively arranged below the sleeve pipe 210 of the first pipe assembly 21, below the sleeve pipe 210 of the first cross pipe 220 and below the sleeve pipe 210 of the second cross pipe 221.

[0059] Specifically, the first pipe assembly 21 is mounted on the straight pipe 12 of the stand 10 by using fasteners, and then an anti-falling piece 50 is mounted at the bottom of the sleeve pipe 210 of the first pipe assembly 21 to prevent the first pipe assembly 21 from suddenly falling.

[0060] In an embodiment, the first pipe assembly 21 is movably mounted on the straight pipe 12 of the stand 10, the height of the first pipe assembly 21 on the stand 10 is adjustable, and the first pipe assembly 21 is convenient to disassemble from the stand 10.

[0061] Specifically, the first pipe assembly 21 with the adjusted height is fixed, the fasteners on the first pipe assembly 21 are locked, and then an anti-falling piece 50 is mounted on the straight pipe 12 of the stand 10 and located at the bottom of the first pipe assembly 21 to support the first pipe assembly 21.

[0062] ​Similarly, the first horizontal pipe 220 and the second horizontal pipe 221 are installed on the vertical pipe 12 of the stand 10 by using fasteners, and then a fall prevention device 50 is installed at the bottom of the sleeve 210 of the first horizontal pipe 220 and the bottom of the sleeve 210 of the second horizontal pipe 221, respectively, to prevent the first horizontal pipe 220 and the second horizontal pipe 221 from suddenly falling. Among them, the first horizontal pipe 220 and the second horizontal pipe 221 are oppositely arranged on both sides of the stand 10 to avoid the first limiting member 320 on the first horizontal pipe 220 from blocking the second limiting member 323 on the second horizontal pipe 221.

[0063] In an embodiment, the welding support tool 100 further comprises an argon filling device 40, which is installed on the stand 10 and arranged close to the base 11.

[0064] Among them, the argon filling device 40 can be provided with a sleeve structure, which can be installed on the vertical pipe 12 of the stand 10 by using fasteners, so that the argon filling device 40 can be fixed to the stand 10.

[0065] Further, the argon filling device 40 and the second limiting member 323 are provided with an input pipe 324, which is movably installed on the vertical pipe 12 or the second horizontal pipe 221, and is connected to an external gas input device. An exhaust hole is arranged at one end of the input pipe 324 away from the vertical pipe 12, and a filter screen is arranged at one end of the input pipe 324 close to the gas input device.

[0066] The input pipe 324 of the argon filling device 40 is connected with the sleeve structure to be fixed to the stand 10. The input pipe 324 of the argon filling device 40 is in communication with the external gas input device, so that the gas input device fills argon into the input pipe 324, to facilitate the gas injection to the pipe sleeved on the input pipe 324, so that the pipe sleeved on the input pipe 324 is protected by inert gas during welding.

[0067] Among them, the pipe is sleeved on the input pipe 324. The filter screen is arranged at one end of the input pipe 324 close to the gas input device, so that the inert gas can be more uniformly input into the input pipe 324, and then into the inside of the pipe, to avoid the inert gas directly blowing on the weld of the pipe, causing poor weld forming. The input pipe 324 is provided with an exhaust hole, so that the air in the input pipe 324 can be discharged from the exhaust hole by filling inert gas, to prevent the air from being left in the input pipe 324, flowing into the pipe, oxidizing the weld of the pipe, and producing slag inclusion.

[0068] The above merely illustrates the exemplary embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation or direct / indirect application in other related technical fields under the technical concept of the present application and by using the content of the present application specification and drawings are included in the patent protection scope of the present application.

Claims

1. A welding fixture for a bracket, the welding fixture comprising: The utility model relates to a welding support tool, which comprises a stand, a plurality of connecting pipe assemblies movably mounted on the stand and spaced apart, the plurality of connecting pipe assemblies comprising a first pipe assembly and a second pipe assembly, and a plurality of fixing limiters movably mounted on the connecting pipe assemblies, the plurality of fixing limiters comprising a clamping piece and a limiter, the clamping piece and the limiter being mounted on the first pipe assembly and the second pipe assembly respectively. The limiter comprises a first limiter and a second limiter, the second pipe assembly comprises a first horizontal pipe and a second horizontal pipe, the first horizontal pipe is arranged opposite to the second horizontal pipe, the first limiter is movably mounted on the first horizontal pipe, and the second limiter is movably mounted on the second horizontal pipe. The connecting pipe assembly further comprises a third pipe assembly, the fixing limiter further comprises a plum-blossom pile fixing piece, the third pipe assembly is mounted on the stand and arranged opposite to the first horizontal pipe, the third pipe assembly is located above the second horizontal pipe, and the plum-blossom pile fixing piece is mounted on the third pipe assembly by means of fasteners. The clamping piece comprises a positioning plate and two clamping portions, the two clamping portions are arranged opposite to the positioning plate, and the two clamping portions and the positioning plate enclose a positioning groove. The first limiter comprises a fixing pipe and two anti-dropping portions, the two anti-dropping portions are arranged opposite to each other and connected to the fixing pipe, the fixing pipe is mounted on the first horizontal pipe by means of fasteners, and the two anti-dropping portions are arranged parallel to the first horizontal pipe.

2. The weld mount fixture of claim 1, wherein, The stand comprises a base and a straight pipe, and the straight pipe is vertically mounted on the base.

3. The weld mount fixture of claim 2, wherein, The first pipe assembly, the first horizontal pipe, the second horizontal pipe, and the third pipe assembly are each provided with a sleeve pipe and a support pipe, the sleeve pipe is sleeved on the straight pipe, the support pipe is fixedly connected to the sleeve pipe and arranged perpendicular to the straight pipe.

4. The weld cradle tooling of claim 2 or 3, wherein, The welding support tool further comprises a plurality of anti-falling pieces, the plurality of anti-falling pieces are respectively arranged below the sleeve pipe of the first pipe assembly, below the sleeve pipe of the first horizontal pipe, and below the sleeve pipe of the second horizontal pipe.

5. The welding fixture of claim 2 or 3, wherein, The welding support tool further comprises an argon filling device, the argon filling device is mounted on the stand and arranged close to the base.

6. The welding fixture of claim 2 or 3, wherein, The argon filling device and the second limiter are provided with an input pipe, the input pipe is movably mounted on the straight pipe or the second horizontal pipe, the input pipe is connected to an external gas input device, one end of the input pipe away from the straight pipe is provided with an exhaust hole, and the other end of the input pipe close to the gas input device is provided with a filter screen.

7. The weld mount fixture of claim 6, wherein, ​ 8. The weld cradle fixture of claim 7, wherein, ​ 9. The weld mount fixture of claim 6, wherein, ​ 10. The weld mount fixture of claim 9, wherein, ​

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