Electric arc welding equipment for butt joint of channel steel

Abstract

The invention belongs to the technical field of channel steel welding, and discloses an electric arc welding device for channel steel butt joint, which comprises a supporting assembly and channel steel, the supporting assembly comprises a bottom plate, a frame body I and a fixing frame, the channel steel is placed on the bottom plate, and the electric arc welding device further comprises a lead screw assembly I and an adjusting assembly which are symmetrically arranged on the bottom plate. According to the scheme, the second lead screw assembly is operated to drive the vertical frame to move downwards and drive the whole welding mechanism to move downwards, welding wires make contact with butt joints between the two sets of channel steel, the arc welding machine is forced to deflect relative to the vertical frame, and then the bottom ends of the welding wires abut against the tops of the butt joints on the side faces of the channel steel; and then operation of the first lead screw assembly is stopped, and the second lead screw assembly is operated to drive the vertical frame and the bottom frame to drive the welding mechanism to integrally move downwards so as to weld butt joints on the side faces of the channel steel, so that the situation that welding is uneven in the process that operators weld the channel steel is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of channel steel welding, in particular to an arc welding device for channel steel butt jointing. Background Art

[0002] Arc welding is a welding method that uses an arc as a heat source. During the welding process, a large amount of heat generated by arc discharge is used as a heat source to melt the electrode and the weldment locally, forming a molten pool, which is then cooled and solidified to form a weld, thereby obtaining a strong joint. When welding channel steel, the welding of the channel steel is usually achieved by the operator holding an arc welding gun and aligning the electrode with the channel steel joint. Since the channel steel is composed of a back plate and two webs, in order to ensure the stability of the channel steel joint and welding, the operator usually welds the outer side of the back plate and the outer side of the web at the joint of the channel steel, which can not only reduce the welding strength of the operator, but also ensure the strength of the channel steel after welding. Even if the welding surface at the joint of the channel steel is reduced, each group of channel steels that need to be welded still needs to have three welding surfaces that are not on the same plane, and the length of the electrode will continue to shorten during welding, which will cause the operator to weld unevenly when changing the surface during long-term welding and welding. Therefore, in order to solve the above problems, an arc welding device for channel steel joint is proposed. Summary of the invention

[0003] In order to solve the problems raised in the above background technology, the present invention provides an arc welding device for channel steel butt welding, which solves the problem that uneven welding may occur during the welding process of channel steel by operators.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an arc welding device for butt welding of channel steels, comprising a support assembly and channel steels, wherein the support assembly comprises a base plate, a frame body and a fixing frame, wherein the channel steels are placed on the base plate, and further comprising: a lead screw assembly and an adjustment assembly, both of which are symmetrically arranged on the base plate; a support mechanism, which is arranged on the frame body and driven by the lead screw assembly to reciprocate; a welding mechanism, which is installed at the bottom of the support mechanism; a positioning assembly, which is installed at the top of the base plate for positioning the channel steels;

[0005] The bracket mechanism includes a frame body 2 which is screwed to the screw part of the screw assembly 1, a vertical frame is movably connected to the middle of the frame body 2, a spring rod 1 is symmetrically and elastically connected to the bottom of the vertical frame, one end of the rod body of the spring rod 1 extends to the inside of the vertical frame and is fixed to the bottom frame, a screw assembly 2 is arranged on the top of the vertical frame, the screw part of the screw assembly 2 is threadedly connected to the frame body 2, and the bottom end of the screw of the screw assembly 2 is connected to the bearing in the middle of the vertical frame;

[0006] The welding mechanism comprises an arc welder elastically hinged between two base frames, a feed assembly is fixedly mounted on the top of the arc welder, a welding wire is also arranged inside the arc welder and the feed assembly, the bottom end of the welding wire extends below the arc welder, and the top end of the welding wire extends above the vertical frame;

[0007] The adjustment assembly comprises two sets of spring rods 2 symmetrically and elastically supported on the bottom plate, a slider is movably sleeved on the top of the spring rods 2, the spring on the spring rods 2 is used to support the slider to maintain an upward trend, the slider is symmetrically fixed with a push rod 2 on one side facing the bracket mechanism, and the slider is also fixed with a push rod 3 located between the two push rods 2 and used to support the arc welding machine;

[0008] The base frame is also provided with a mounting hole which penetrates the base frame and can be sleeved with the second push rod.

[0009] Preferably, the positioning assembly comprises two groups of spring rods three which are symmetrical and fixed to the top of the base plate, and the two groups of spring rods three are externally sleeved with baffles, and the baffles overlap with the web portion of the channel steel in the horizontal direction.

[0010] Preferably, a top rod 1 is fixedly connected to the bottom of the sliding block; in an initial state, a gap is left between the bottom of the top rod 1 and the top of the baffle.

[0011] Preferably, an elastic bayonet is elastically connected to the bottom of the base frame, and a top end of the elastic bayonet extends to the base frame and is locked into the arc welding machine.

[0012] Preferably, a slot one connected to the middle of the mounting hole is provided on the top of the elastic bayonet, and the end of the push rod two away from the slider is inclined and is used to cooperate with and squeeze the slot one to make the elastic bayonet move downward and disengage from the arc welding machine.

[0013] Preferably, a reciprocating component 1 is fixedly connected to the frame 1;

[0014] The reciprocating assembly 1 includes a frame body 3 fixedly connected to the frame body 1, the frame body 3 is provided with a slide groove 1 and a slide groove 2 with a width greater than that of the slide groove 1, and the frame body 3 is also symmetrically and equidistantly fixed with two groups of protrusions 1, and the two groups of protrusions 1 are staggered;

[0015] One end of the top of the slider is elastically hinged with an elastic rod 2 whose width is smaller than the width of the first slide slot; the top of the elastic rod 2 is fixedly connected with a convex shaft 2 whose width is larger than the width of the elastic rod 2 and smaller than the width of the second slide slot;

[0016] The maximum rotation angle of the elastic rod 2 is ninety degrees.

[0017] Preferably, the elastic rod 2 is kept in an inclined state under the action of its own elastic force in the initial state.

[0018] Preferably, a reciprocating assembly 2 is fixedly connected between the two frames 1;

[0019] The reciprocating assembly 2 comprises a horizontal frame 1 and a horizontal frame 2 fixedly connected between two frames 1, the horizontal frame 1 and the horizontal frame 2 are both provided with convex blocks 2 at equal distances, the two ends of the horizontal frame 2 are both provided with notches 2, and one end of the horizontal frame 1 is also fixedly connected with an elastic pick;

[0020] A mounting plate is fixedly connected to the rod body of a group of spring rods 1 close to the reciprocating assembly 2, an elastic rod 1 is elastically hinged on the mounting plate, and a convex shaft 1 is fixedly connected to one end of the elastic rod 1 away from the mounting plate;

[0021] The height of the upper surface of the elastic rod 1 is lower than the height of the lower surface of the protrusion 2, the protrusions 2 on the horizontal frame 1 and the horizontal frame 2 are arranged alternately and a channel is formed between the two, and the protrusion 1 can move along the channel;

[0022] The maximum rotation angle of the elastic rod 1 is ninety degrees.

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

[0024] The above scheme drives the vertical frame downward by running the screw assembly 2 and drives the welding mechanism downward as a whole, so that the welding wire contacts the butt joint between the two groups of channel steels, stops running the screw assembly 2, and runs the screw assembly 1 to drive the frame 2 to drive the vertical frame to move in the horizontal direction, so that the welding wire is welded along the butt joint at the top of the channel steel. When the welding wire moves to the edge of the butt joint, the vertical frame will first drive the bottom frame to move and insert the top rod 2 into the mounting hole, and then the top rod 3 will abut against the arc welding machine and force the arc welding machine to deflect relative to the vertical frame, so that the bottom end of the welding wire abuts against the top of the butt joint on the side of the channel steel, and then stops running the screw assembly 1 and runs the screw assembly 2 to drive the vertical frame and the bottom frame to drive the welding mechanism downward as a whole to achieve welding of the butt joint on the side of the channel steel, thereby avoiding the occurrence of uneven welding during the welding process of the channel steel by the operator;

[0025] The above scheme rotates to a vertical state by the slider when the downward convex shaft 2 abuts against the side wall of the frame body 3. When the convex shaft 2 and the slide groove 2 are at the same height, the convex shaft 2 will rotate with the elastic rod 2 and enter between the two groups of convex blocks 1. When the vertical frame, the bottom frame and the welding mechanism are reset and moved upward, the slider will also move upward, so that the convex shaft 2 moves along the gap between the two groups of vertically arranged convex blocks 1 respectively, and forces the spring rod 2 to move back and forth on the bottom plate. At the same time, the spring rod 2 will also drive the welding wire, the arc welding machine and the bottom frame to move back and forth through the slider, thereby realizing the second reciprocating welding of the side weld.

[0026] The above scheme drives the mounting plate upward through the base frame and spring rod 1, so that the convex shaft 1 enters between the cross frame 1 and the cross frame 2 through the groove 2 away from the end of the elastic paddle, and the screw assembly 1 moves in the opposite direction and drives the elastic rod 1 to move, so that the convex shaft 1 moves along the gap between the convex block 2 on the cross frame 1 and the cross frame 2, so that the arc welding machine at this time moves back and forth while moving, thereby realizing a second reciprocating welding of the weld at the top of the channel steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0029] Figure 3 It is a structural schematic diagram of a reciprocating component 1 of the present invention;

[0030] Figure 4 It is a structural schematic diagram of the support mechanism of the present invention;

[0031] Figure 5 It is a structural schematic diagram of the welding mechanism of the present invention;

[0032] Figure 6 is a side view of the support mechanism of the present invention;

[0033] Figure 7 for Figure 6 The enlarged view of point B in the middle;

[0034] Figure 8 for Figure 7 Schematic diagram of the cooperation of the two elastic bayonet pins of the middle push rod;

[0035] Fig. 9 It is a schematic diagram of the side cross-sectional structure of the bottom plate of the present invention;

[0036] Fig.10 It is a schematic structural diagram of the reciprocating component 2 of the present invention.

[0037] In the figure: 1, support assembly; 11, bottom plate; 12, frame body 1; 13, fixed frame; 2, lead screw assembly 1; 3, bracket mechanism; 31, frame body 2; 32, vertical frame; 33, bottom frame; 331, mounting hole; 332, elastic bayonet; 333, notch 1; 34, spring rod 1; 341, mounting plate; 342, elastic rod 1; 343, convex shaft 1; 35, lead screw assembly 2; 4, welding mechanism; 41, arc welding machine; 42, welding wire; 43, feeding assembly; 5, adjusting Section assembly; 51, spring rod two; 52, slider; 521, elastic rod two; 522, convex shaft two; 523, push rod one; 53, push rod two; 54, push rod three; 6, reciprocating assembly one; 61, frame three; 62, slide groove one; 63, slide groove two; 64, protrusion one; 7, reciprocating assembly two; 71, cross frame one; 72, cross frame two; 73, protrusion two; 74, notch two; 75, elastic pick; 8, positioning assembly; 81, spring rod three; 82, baffle; 9, channel steel. DETAILED DESCRIPTION

[0038] 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.

[0039] like Figures 1 to 10 As shown, the present invention provides an arc welding device for butt welding of channel steels, comprising a support assembly 1 and a channel steel 9, wherein the support assembly 1 comprises a bottom plate 11, a frame 12 and a fixing frame 13, and the channel steel 9 is placed on the bottom plate 11, and further comprises: a lead screw assembly 2 and an adjustment assembly 5, both of which are symmetrically arranged on the bottom plate 11; a support mechanism 3, which is arranged on the frame 12 and is driven by the lead screw assembly 2 to reciprocate; a welding mechanism 4, which is installed at the bottom of the support mechanism 3; a positioning assembly 8, which is installed at the top of the bottom plate 11 for positioning the channel steel 9;

[0040] The bracket mechanism 3 includes a frame body 2 31 which is screwed to the screw part of the screw assembly 1 2, a vertical frame 32 is movably connected to the middle of the frame body 2 31, a spring rod 1 34 is symmetrically and elastically connected to the bottom of the vertical frame 32, one end of the rod part of the spring rod 1 34 extends to the inside of the vertical frame 32 and is fixed to the bottom frame 33, a screw assembly 2 35 is arranged on the top of the vertical frame 32, the screw part of the screw assembly 2 35 is threadedly connected to the frame body 2 31 and the bottom end of the screw of the screw assembly 2 35 is connected to the middle bearing of the vertical frame 32;

[0041] The welding mechanism 4 includes an arc welder 41 elastically hinged between two base frames 33, a feed assembly 43 is fixedly installed on the top of the arc welder 41, and a welding wire 42 is also arranged inside the arc welder 41 and the feed assembly 43, the bottom end of the welding wire 42 extends below the arc welder 41, and the top end of the welding wire 42 extends above the vertical frame 32;

[0042] The adjustment assembly 5 includes two sets of spring rods 51 symmetrically and elastically supported on the bottom plate 11. A slider 52 is movably sleeved on the top of the spring rod 51. The spring on the spring rod 51 is used to support the slider 52 to maintain an upward trend. The slider 52 is symmetrically fixed with a push rod 53 on one side of the support mechanism 3. The slider 52 is also fixed with a push rod 54 located between the two push rods 53 and used to support the arc welding machine 41.

[0043] The bottom frame 33 is also provided with a mounting hole 331 which penetrates the bottom frame 33 and can be fitted with the second push rod 53 .

[0044] By adopting the above scheme, the vertical frame 32 is driven downward by running the screw assembly 2 35 and the welding mechanism 4 is driven downward as a whole, so that the welding wire 42 contacts the butt joint between the two groups of channel steels 9, the running of the screw assembly 2 35 is stopped, and the screw assembly 1 2 drives the frame 2 31 to drive the vertical frame 32 to move in the horizontal direction, so that the welding wire 42 is welded along the butt joint at the top of the channel steel 9. When the welding wire 42 moves to the edge of the butt joint, the vertical frame 32 will first drive the base frame 33 to move and insert the top rod 2 53 into the mounting hole 331, and then the top rod 3 54 will abut against the arc welding machine 41 and force the arc welding machine 41 to deflect relative to the vertical frame 32, thereby making the bottom end of the welding wire 42 abut against the top of the butt joint on the side of the channel steel 9, and then the running of the screw assembly 1 2 is stopped, and the screw assembly 2 35 is driven to drive the vertical frame 32 and the base frame 33 to drive the welding mechanism 4 to move downward as a whole to realize the welding of the butt joint on the side of the channel steel 9, thereby avoiding the occurrence of uneven welding during the welding process of the channel steel 9 by the operator.

[0045] like Figure 1-Figure 3 , Figure 7 and Figure 8 As shown, the positioning assembly 8 includes two sets of spring rods 81 symmetrically fixed to the top of the bottom plate 11, and the two sets of spring rods 81 are externally sleeved with baffles 82, and the baffles 82 overlap with the web portion of the channel steel 9 in the horizontal direction;

[0046] A push rod 523 is fixedly connected to the bottom of the slider 52 ; in the initial state, the bottom of the push rod 523 is located above the baffle 82 .

[0047] When the above solution is adopted, when installing the channel steel 9, the two sets of channel steel 9 are pushed onto the bottom plate 11 from the side ends of the support assembly 1, and the two sets of channel steel 9 are butted when the ends of the two sets of channel steel 9 are respectively in contact with the two sides of the baffle 82;

[0048] When the base frame 33 moves downward, the slider 52 and the push rod 523 will also be driven downward. Before the arc welding machine 41 completes the side welding of the channel steel 9, the push rod 523 will squeeze the baffle 82 downward and disengage from the weld between the two positioning assemblies 8, so as to facilitate the unloading and removal of the channel steel 9 after the welding is completed.

[0049] like Figure 1 , Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, the bottom of the base frame 33 is elastically connected to an elastic latch 332, and the top of the elastic latch 332 extends to the base frame 33 and is latched into the arc welding machine 41;

[0050] A notch 333 communicating with the middle of the mounting hole 331 is formed on the top of the elastic latch 332. The end of the push rod 53 away from the slider 52 is inclined and is used to cooperate with the notch 333 and squeeze the notch 333 to make the elastic latch 332 move downward and disengage from the arc welding machine 41.

[0051] By adopting the above solution, the arc welder 41 is inserted into the arc welder 41 through the elastic latch 332, so that the arc welder 41 can stably maintain a vertical state when welding the weld seam on the top of the channel steel 9.

[0052] like Figure 1-Figure 9 As shown, a reciprocating assembly 6 is fixedly connected to the frame 12; the reciprocating assembly 6 includes a frame 3 61 fixedly connected to the frame 12, a slide groove 62 and a slide groove 2 63 having a width greater than the slide groove 1 62 are provided on the frame 3 61, and two groups of protrusions 64 are symmetrically and equidistantly fixedly connected to the frame 3 61, and the two groups of protrusions 64 are staggered;

[0053] One end of the top of the slider 52 is elastically hinged with an elastic rod 521 whose width is smaller than the width of the first slide slot 62, and the top of the elastic rod 521 is fixed with a convex shaft 522 whose width is larger than the width of the elastic rod 521 and smaller than the width of the second slide slot 63;

[0054] The maximum rotation angle of the second elastic rod 521 is ninety degrees; the second elastic rod 521 is kept in an inclined state by its own elastic force in the initial state;

[0055] By adopting the above scheme, the slider 52 rotates to a vertical state by abutting the side wall of the frame body 3 61 when the downward convex shaft 2 522 contacts the side wall of the frame body 3 61. When the convex shaft 2 522 and the slide groove 2 63 are at the same height, the convex shaft 2 522 will rotate with the elastic rod 2 521 and enter between the two groups of protrusions 1 64. When the vertical frame 32, the base frame 33 and the welding mechanism 4 are reset and move upward, the slider 52 will also move upward, so that the convex shaft 2 522 moves along the gap between the two groups of vertically arranged protrusions 1 64 respectively, and forces the spring rod 2 51 to move back and forth on the bottom plate 11. At the same time, the spring rod 2 51 will also drive the welding wire 42, the arc welding machine 41 and the base frame 33 to move back and forth through the slider 52, thereby realizing the second reciprocating welding of the side weld.

[0056] like Figure 1 and Fig.10 As shown, a reciprocating assembly 2 7 is also fixedly connected between the two frames 12; the reciprocating assembly 2 7 includes a cross frame 1 71 and a cross frame 2 72 fixedly connected between the two frames 12, and protrusions 2 73 are equidistantly arranged on the cross frame 1 71 and the cross frame 2 72, and notches 2 74 are provided at both ends of the cross frame 2 72, and an elastic paddle 75 is also fixedly connected to one end of the cross frame 1 71;

[0057] A mounting plate 341 is fixedly connected to the rod body of a group of spring rods 34 near the reciprocating assembly 2 7, an elastic rod 342 is elastically hinged on the mounting plate 341, and a convex shaft 343 is fixedly connected to one end of the elastic rod 342 away from the mounting plate 341;

[0058] The height of the upper surface of the elastic rod 1 342 is lower than the height of the lower surface of the protrusion 2 73. The protrusions 2 73 on the horizontal frame 1 71 and the horizontal frame 2 72 are arranged alternately and a channel is formed between the two. The protrusion 1 343 can move along the channel. The maximum rotation angle of the elastic rod 1 342 is 90 degrees.

[0059] By adopting the above scheme, the mounting plate 341 is driven upward by the base frame 33 and the spring rod 1 34, so that the convex shaft 1 343 enters between the cross frame 1 71 and the cross frame 2 72 through the notch 2 74 away from the end of the elastic paddle 75, and the screw assembly 1 2 moves in the opposite direction and drives the elastic rod 1 342 to move, so that the convex shaft 1 343 moves along the gap between the convex block 2 73 on the cross frame 1 71 and the cross frame 2 72, so that the arc welding machine 41 at this time moves back and forth while moving, thereby realizing a second reciprocating welding of the weld at the top of the channel steel 9.

[0060] The working principle and use process of the present invention:

[0061] First, the operator pushes two sets of channel steels 9 from the side ends of the support assembly 1 onto the bottom plate 11. When the ends of the two sets of channel steels 9 abut against the two sides of the baffle 82 respectively, the two sets of channel steels 9 are connected.

[0062] Then, the screw assembly 2 35 is operated to drive the vertical frame 32 downward and drive the welding mechanism 4 to move downward as a whole. When the welding wire 42 contacts the butt joint between the two groups of channel steels 9, the screw assembly 2 35 is stopped. Then, the screw assembly 1 2 is operated to drive the frame 2 31 to drive the vertical frame 32 to move in the horizontal direction, so that the welding wire 42 is welded along the butt joint at the top of the channel steel 9. When the welding wire 42 moves to the edge of the butt joint, the vertical frame 32 will first drive the bottom frame 33 to move and insert the top rod 2 53 into the mounting hole 331. Then, the top rod 3 54 will abut against the arc welding machine 41, thereby forcing the arc welding machine 41 to deflect relative to the vertical frame 32, thereby causing the bottom end of the welding wire 42 to abut against the top of the butt joint on the side of the channel steel 9. Then, the screw assembly 1 2 is stopped and the screw assembly 2 35 is operated to drive the vertical frame 32 and the bottom frame 33 to drive the welding mechanism 4 to move downward as a whole to achieve welding of the butt joint on the side of the channel steel 9.

[0063] When the bottom frame 33 moves downward, the slider 52 and the top rod 523 are also driven downward. Before the arc welding machine 41 completes the side welding of the channel steel 9, the top rod 523 will squeeze the baffle 82 downward and break away from the weld between the two positioning components 8.

[0064] When the slider 52 moves downward, the convex shaft 2 522 will contact the side wall of the frame body 3 61 and rotate to a vertical state. When the convex shaft 2 522 and the slide groove 2 63 are at the same height, the convex shaft 2 522 will rotate with the elastic rod 2 521 and enter between the two groups of protrusions 1 64. When the vertical frame 32, the bottom frame 33 and the welding mechanism 4 are reset and move upward, the slider 52 will also move upward, so that the convex shaft 2 522 moves along the gap between the two groups of vertically arranged protrusions 1 64, and forces the spring rod 2 51 to move back and forth on the bottom plate 11. At the same time, the spring rod 2 51 will also drive the welding wire 42, the arc welding machine 41 and the bottom frame 33 to move back and forth through the slider 52, thereby realizing the second reciprocating welding of the side weld.

[0065] When the bottom end of the arc welding machine 41 is at the corner between the side of the channel steel 9 and the top plate, the screw assembly 1 2 drives the frame 2 31 to drive the vertical frame 32 and the bottom frame 33 to move in the opposite direction, so that the top rod 3 54 releases the contact with the arc welding machine 41 and the mounting hole 331 is released from the top rod 2 53, and the arc welding machine 41 is reset to a vertical state under the action of its own elastic force;

[0066] When the base frame 33 is reset, the mounting plate 341 is driven upward through the spring rod 34, so that the convex shaft 343 passes through the notch 74 away from the end of the elastic paddle 75 and enters between the cross frame 1 71 and the cross frame 2 72, and the lead screw assembly 2 moves in the opposite direction and drives the elastic rod 342 to move, so that the convex shaft 343 moves along the gap between the convex block 2 73 on the cross frame 1 71 and the cross frame 2 72, so that the arc welding machine 41 moves back and forth while moving, thereby realizing a second reciprocating welding of the weld at the top of the channel steel 9.

[0067] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including 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 device.

[0068] 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. An arc welding device for butt welding of channel steels, comprising a support assembly (1) and a channel steel (9), wherein the support assembly (1) comprises a base plate (11), a frame body (12) and a fixing frame (13), wherein the channel steel (9) is placed on the base plate (11), and characterized in that: Also includes: The lead screw assembly (2) and the adjustment assembly (5) are both symmetrically arranged on the base plate (11); A support mechanism (3) is disposed on the frame body (12) and is driven by the lead screw assembly (2) to perform reciprocating movement; A welding mechanism (4), which is installed at the bottom of the bracket mechanism (3); A positioning assembly (8) mounted on the top of the base plate (11) for positioning the channel steel (9); The support mechanism (3) comprises a frame body 2 (31) which is threadedly connected to the screw rod portion of the screw assembly 1 (2); a vertical frame (32) is movably connected to the middle of the frame body 2 (31); a spring rod 1 (34) is symmetrically and elastically connected to the bottom of the vertical frame (32); one end of the rod body of the spring rod 1 (34) extends into the interior of the vertical frame (32) and is fixedly connected to a bottom frame (33); a screw assembly 2 (35) is arranged on the top of the vertical frame (32); the screw rod portion of the screw assembly 2 (35) is threadedly connected to the frame body 2 (31) and the bottom end of the screw of the screw assembly 2 (35) is connected to a bearing in the middle of the vertical frame (32); The welding mechanism (4) comprises an arc welding machine (41) elastically hinged between two base frames (33), a feeding assembly (43) is fixedly installed on the top of the arc welding machine (41), and welding wire (42) is also arranged inside the arc welding machine (41) and the feeding assembly (43), the bottom end of the welding wire (42) extends below the arc welding machine (41), and the top end of the welding wire (42) extends above the vertical frame (32); The adjustment assembly (5) comprises two groups of spring rods (51) symmetrically and elastically supported on the bottom plate (11); a slider (52) is movably sleeved on the top of the spring rod (51); the spring on the spring rod (51) is used to support the slider (52) to maintain an upward trend; the slider (52) is symmetrically fixed with a push rod (53) on one side facing the bracket mechanism (3); and the slider (52) is also fixed with a push rod (54) located between the two push rods (53) and used to support the arc welding machine (41); The base frame (33) is also provided with a mounting hole (331) which penetrates the base frame (33) and can be fitted with the second top rod (53).

2. The arc welding equipment for channel steel butt welding according to claim 1, characterized in that: The positioning assembly (8) comprises two groups of spring rods (81) which are symmetrical and fixed to the top of the base plate (11). The two groups of spring rods (81) are externally sleeved with baffles (82). The baffles (82) overlap with the web of the channel steel (9) in the horizontal direction.

3. The arc welding equipment for channel steel butt welding according to claim 2, characterized in that: A top rod (523) is fixedly connected to the bottom of the sliding block (52); In the initial state, the bottom of the top rod (523) is located above the baffle (82).

4. The arc welding equipment for channel steel butt welding according to claim 3, characterized in that: The bottom of the base frame (33) is elastically connected to an elastic latch (332), and the top end of the elastic latch (332) extends to the base frame (33) and is latched into the arc welding machine (41).

5. The arc welding equipment for channel steel butt welding according to claim 4, characterized in that: A notch (333) communicating with the middle of the mounting hole (331) is formed at the top of the elastic latch (332); an end of the push rod (53) away from the slider (52) is inclined and is used to cooperate with the notch (333) and squeeze the notch (333) to make the elastic latch (332) move downward and detach from the arc welding machine (41).

6. The arc welding equipment for channel steel butt welding according to claim 5, characterized in that: A reciprocating assembly (6) is fixedly connected to the frame (12); The reciprocating assembly 1 (6) comprises a frame body 3 (61) fixedly connected to the frame body 1 (12), the frame body 3 (61) is provided with a slide groove 1 (62) and a slide groove 2 (63) whose width is greater than the slide groove 1 (62), and the frame body 3 (61) is also symmetrically and equidistantly fixed with two groups of protrusions 1 (64), and the two groups of protrusions 1 (64) are staggeredly arranged; One end of the top of the slider (52) is elastically hinged with an elastic rod (521) whose width is smaller than the width of the first slide groove (62); the top of the elastic rod (521) is fixedly connected with a convex shaft (522) whose width is larger than the width of the elastic rod (521) and smaller than the width of the second slide groove (63); The maximum rotation angle of the second elastic rod (521) is ninety degrees.

7. The arc welding equipment for channel steel butt welding according to claim 6, characterized in that: The second elastic rod (521) is kept in an inclined state under the action of its own elastic force in the initial state.

8. The arc welding equipment for channel steel butt welding according to claim 7, characterized in that: A reciprocating assembly 2 (7) is also fixedly connected between the two frames 1 (12); The reciprocating assembly 2 (7) comprises a first cross frame (71) and a second cross frame (72) fixedly connected between two first frames (12), the first cross frame (71) and the second cross frame (72) are both provided with second protrusions (73) at equal distances, the two ends of the second cross frame (72) are both provided with second notches (74), and one end of the first cross frame (71) is also fixedly connected with an elastic pick (75); A mounting plate (341) is fixedly connected to the rod body of a group of spring rods (34) close to the reciprocating assembly (7), an elastic rod (342) is elastically hinged on the mounting plate (341), and a convex shaft (343) is fixedly connected to one end of the elastic rod (342) away from the mounting plate (341); The height of the upper surface of the elastic rod 1 (342) is lower than the height of the lower surface of the protrusion 2 (73); the protrusions 2 (73) on the horizontal frame 1 (71) and the horizontal frame 2 (72) are arranged alternately and a channel is formed between the two; the protrusion 1 (343) can move along the channel; The maximum rotation angle of the elastic rod 1 (342) is ninety degrees.

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