A welding assembly of a box beam

Abstract

The invention discloses a welding assembly for a box beam, and belongs to the technical field of steel structure processing. The assembly includes a bracket and a mounting seat thereon, a welding gun, a recovery suction nozzle, a pressure plate, two vertical pulleys and two transverse pulleys; the bracket includes a top plate, two side plates, a fixing rod, an adjustment fixing, a welding gun buffer structure, a pressure plate buffer structure and a vertical buffer structure arranged in a front-back direction, a notch is provided at the bottom of the side plate, the pressure plate is located in the notch and can move outward, two vertical pulleys are respectively arranged at the bottom of the two side plates and are located on the outside of the notch, two transverse pulleys are respectively arranged at the bottom of the two side plates and are located on the inside of the notch, a fixing rod is rotatably arranged on the side plate, a welding gun is located between the two side plates and is adjustably fixed to the fixing rod by adjusting the fixing, and a recovery suction nozzle is fixed to the top plate or the side plate on the rear side by a support frame. Both the welding gun and the pressure plate can be adjusted adaptively to ensure that the welding gun and the pressure plate are fitted to the box beam and avoid damage.

Description

Technical Field

[0001] The invention belongs to the technical field of steel structure processing, and in particular relates to a welding assembly of a box beam, which can be adaptively adjusted. Background Art

[0002] In the manufacturing process of large steel structure equipment, there are a lot of box beam welding work, and in these structures, the main ones are long and straight fillet welds; for the same fillet welds, submerged arc welding is often used. In the prior art, when using a submerged arc welding machine to weld flat fillet welds, in order to achieve a good weld, the position of the end of the welding wire and the weld to be welded is required to be relatively high, and the application and recovery of the flux and the feeding of the welding wire are also very critical.

[0003] For example, the patent with application number CN201720244149.3 discloses a box-beam submerged arc welding machine, including a Y-axis guide rail and a frame slidably mounted on the Y-axis guide rail, the frame is provided with an X-axis slide arm, a welding device is slidably mounted on the X-axis slide arm, the welding device includes a hopper for storing flux, a wire feeding group and a welding trolley that can roll on the box beam, the welding trolley is provided with a welding gun, the wire feeding group is installed on the welding trolley, and the output end of the wire feeding group is connected to the welding gun, the output end of the hopper is installed on the welding trolley and is located at the front end of the welding gun in the welding forward direction, the hopper is provided with a recovery group for recovering the flux, and the input end of the recovery group is arranged at the rear end of the welding trolley.

[0004] For example, the patent with application number CN202122408833.X discloses a multifunctional welding device, including a frame, a welding frame is installed on the frame, a welding gun is vertically installed on the welding frame, a wire feeding mechanism is arranged above the welding gun, and also includes a coarse adjustment mechanism and a fine adjustment mechanism, the coarse adjustment mechanism is connected to the welding frame, the coarse adjustment mechanism is used to adjust the position of the welding frame up and down and front and back, the fine adjustment mechanism is connected to the welding gun, and the fine adjustment mechanism is used to adjust the front and back position of the welding gun and the deflection angle of the welding gun. A trolley is installed at the bottom of the welding frame, and the trolley includes a trolley plate, and a vertical first rotating wheel is rotatably installed on the front side of the trolley plate. A horizontal second rotating wheel is rotatably installed at the bottom of the rear side of the trolley plate.

[0005] For example, the patent with application number CN201822029888.8 discloses a gantry welding machine, including a gantry, a transverse sliding plate mechanism, a lifting column mechanism, an electrical controller and a welding device; two transverse sliding plate mechanisms are arranged on the gantry, and lifting column mechanisms are arranged on the two transverse sliding plate mechanisms. The lower ends of the two lifting column mechanisms are provided with welding mechanisms, and the two welding mechanisms are arranged oppositely; the transverse sliding plate mechanism and the lifting column mechanism are connected to the electrical controller, and the electrical controller is used to control the movement of the transverse sliding plate mechanism and the lifting column mechanism; the gantry includes a pillar, a gantry beam, A transverse guide rail and a transverse rack; two pillars are arranged vertically, a gantry crossbeam is arranged between the tops of the two pillars, two transverse guide rails are fixedly arranged on the side of the gantry crossbeam along the length direction of the gantry crossbeam, and a transverse rack is fixedly arranged on the side of one transverse guide rail; the transverse sliding plate mechanism includes a transverse sliding plate, a motor, a transverse transmission gear and a transverse sliding pulley; the output end of the motor is arranged through the transverse sliding plate, and a transverse transmission gear is arranged on the output end of the motor, and the transverse transmission gear is meshed with the transverse rack; two rows of transverse sliding pulleys are arranged on one surface of the transverse sliding plate, and the transverse sliding pulleys are respectively stuck between the two transverse guide rails; The lifting column mechanism includes a lifting column, a lifting rack of the lifting column, a lifting column positioning wheel, a lifting column vertical movement guide rail, a lifting column motor, and a vertical transmission gear; the lifting rack of the lifting column is fixedly arranged on the side of the lifting column along the length direction of the lifting column; the lifting column vertical movement guide rails are arranged on both sides of the lifting column along the length direction, and two rows of lifting column positioning wheels are arranged on the other side of the transverse plate, and the lifting column vertical movement guide rails on both sides of the lifting column are stuck between the two rows of lifting column positioning wheels; the lifting column motor is arranged on the top of the transverse plate, and the output end of the lifting column motor is arranged with a vertical transmission gear, and the vertical transmission gear is connected to the lifting column lifting column The lower rack is engaged; the welding device includes a horizontal lead screw, a horizontal lead screw sleeve, a horizontal lead screw adjustment knob, a vertical lead screw adjustment knob, a vertical lead screw, a vertical lead screw sleeve, a welding gun, and a welding gun clamping device; the horizontal lead screw is vertically arranged with the lifting column, the horizontal lead screw sleeve is sleeved outside the horizontal lead screw, the vertical lead screw sleeve is fixedly arranged with the vertical lead screw sleeve, the vertical lead screw is arranged in the vertical lead screw sleeve, the horizontal lead screw sleeve is provided with a horizontal lead screw adjustment knob, the vertical lead screw sleeve is provided with a vertical lead screw adjustment knob, the end of the vertical lead screw is provided with a welding gun clamping device, and the welding gun clamping device clamps the welding gun.

[0006] The existing welding assembly includes a bracket and a mounting seat thereon, a welding gun, a recovery nozzle, a press plate, two vertical pulleys and two transverse pulleys, etc. The recovery nozzle is located directly behind the welding gun, the press plate is arranged in the front-to-back direction and it abuts against the outer side of the box beam; the two vertical pulleys are arranged side by side in the front-to-back direction, they are arranged vertically, and they abut against the outer side of the box beam. The two transverse pulleys are arranged side by side in the front-to-back direction, they are arranged in the left-to-right direction, and they abut against the top of the box beam.

[0007] In the prior art, the welding gun and the pressure plate are directly fixed on the bracket, which not only fails to achieve a tight fit between the welding gun and the pressure plate and the box beam, but also directly hits the welding gun and the pressure plate on the box beam, which may cause damage to the welding gun, the pressure plate or the box beam. Summary of the invention

[0008] In order to solve the above problems, an embodiment of the present invention provides a box beam welding assembly, the bracket can be adjusted up and down adaptively, and the welding gun and the pressing plate can be adjusted adaptively to ensure that the welding gun and the pressing plate are in close contact with the box beam and avoid damage. The technical solution is as follows: The embodiment of the present invention provides a welding assembly of a box beam, including a bracket and a mounting seat 1 thereon, a welding gun 2, a recovery nozzle 4, a pressure plate 5, two vertical pulleys 6 and two transverse pulleys 7, wherein the recovery nozzle 4 is located directly behind the welding gun 2, the pressure plate 5 is arranged in the front-to-back direction and it rests on the outer side of the box beam 3; the two vertical pulleys 6 are arranged side by side in the front-to-back direction, and they are arranged vertically, and they rest on the outer side of the box beam 3; the two transverse pulleys 7 are arranged side by side in the front-to-back direction, and they are arranged in the left-to-right direction, and they rest on the top of the box beam 3; the bracket includes a A top plate 8 arranged in the front-to-back direction, two side plates 9 arranged side by side in the front-to-back direction on the lower side of the top plate 8, a fixing rod 10 arranged between the two side plates 9 and in the front-to-back direction, an adjustment fixing member 11 on the fixing rod 10, a welding gun buffer structure 12 between one end of the fixing rod 10 and the corresponding side plate 9, a pressing plate buffer structure 13 between the outer side of the pressing plate 5 and the side plate 9, and a vertical buffer structure 14 between the upper side of the top plate 8 and the mounting seat 1, a notch 15 is provided at the bottom of the side plate 9, the pressing plate 5 is located in the notch 15 and can move outward, and two vertical pulleys 6 are respectively The welding gun 2 is arranged at the bottom of the two side plates 9 and is located on the outside of the notch 15. The two transverse pulleys 7 are respectively arranged at the bottom of the two side plates 9 and are located on the inside of the notch 15. The fixing rod 10 is rotatably arranged on the side plate 9. The welding gun 2 is located between the two side plates 9 and is adjustably fixed to the fixing rod 10 by adjusting the fixing member 11. The recovery nozzle 4 is fixed to the top plate 8 or the rear side plate 9 through the support frame 16. The welding gun buffer structure 12 includes a swing arm 21 at the end of the fixing rod 10, and a corresponding side plate 9 and located on both sides of the swing arm 21. The first spring 23 between the two baffles 22 and the swing arm 21 and the outer baffle 22, the swing arm 21 rests on the inner baffle 22; the pressure plate buffer structure 13 includes a rotating shaft 31 vertically arranged in the middle of the outer side of the pressure plate 5, a transverse arm 32 arranged in the left and right directions, a hinge seat 33 on one side plate 9 and a tension spring 34 on the other side plate 9; the transverse arm 32 is located between the two side plates 9, the middle part of which is hinged on the hinge seat 33, the inner end of which is hinged to the pressure plate 5 through the rotating shaft 31, and the outer end is connected to the other end of the tension spring 34.

[0009] Among them, the vertical buffer structure 14 in the embodiment of the present invention includes an upper sleeve 41, a limiting ear 43 on the outside of the upper sleeve 41, a lifting column 42 inserted in the upper sleeve 41 and a second spring in the upper sleeve 41, the upper sleeve 41 and the lifting column 42 are both vertically arranged and are respectively arranged on the lower side of the mounting seat 1 and the upper side of the top plate 8, the lifting column 42 can move up and down in the upper sleeve 41, the limiting ear 43 is located directly above the welding gun 2 and an oblong hole is provided on its upper edge in the left and right directions; the welding gun 2 is located on the inner side of the top plate 8, and its upper end is slidably arranged in the oblong hole and can move up and down in the oblong hole; the second spring is vertically arranged and is arranged between the upper side of the lifting column 42 and the lower side of the mounting seat 1.

[0010] Furthermore, in the embodiment of the present invention, the lower portion of the side plate 9 is bent inward to form a bent portion, the welding gun buffer structure 12 is located at the upper portion of the bent portion, and the notch 15 is located at the bottom of the bent portion.

[0011] Furthermore, the notch 15 in the embodiment of the present invention is a vertically arranged rectangular opening, and a vertical fixing plate 17 is provided on the side panel 9 and located on the inner side of the notch 15 along the vertical direction, and a horizontal fixing plate 18 is provided at the bottom of the side panel 9 and located on the outer side of the notch 8 along the front-to-back direction. The vertical fixing plate 17 and the horizontal fixing plate 18 are both located on the side of the side panel 9 away from the welding gun 2, and the vertical fixing plate 17 is located above the inner side of the corresponding horizontal fixing plate 18, the transverse pulley 7 is provided on the inner side of the corresponding vertical fixing plate 17, and the vertical pulley 6 is provided on the lower side of the corresponding horizontal fixing plate 18; the pressing plate 5 is arranged close to the outer side of the notch 15.

[0012] Specifically, the swing arm 21 in the embodiment of the present invention is located at the lower side of the fixed rod 10, and is arranged obliquely inward from top to bottom. Its upper end is fixed to the rear end of the fixed rod 10, and is located adjacent to the rear side panel 9 on the rear side, and its lower end is against the inner baffle 22.

[0013] Specifically, the hinge seat 33 in the embodiment of the present invention is arranged at the lower rear part of the front side panel 9 and is located on the outside of the notch 15; the inner end of the horizontal arm 32 is connected to the upper end of the rotating shaft 31, and the middle part of the upper side is hinged to the hinge seat 33 through a vertical pin shaft, and the lower side of the outer end is connected to the front end of the tension spring 34; the tension spring 34 is arranged in the front-to-back direction, and its rear end is connected to the lower part of the rear side panel 9.

[0014] Preferably, a screw fixing plate 35 is provided on the outer side of the rear side side panel 9 in the embodiment of the present invention in the left-right direction, and a screw 36 that can be adjusted forward and backward is provided on the screw fixing plate 35. The screw 36 is arranged in the front-back direction and a tension spring mounting seat 37 is provided at its front end, and the rear end of the tension spring 34 is fixed on the tension spring mounting seat 37.

[0015] Among them, the adjustment fixing part 11 in the embodiment of the present invention includes a locking screw sleeve arranged in the left and right directions, a locking bolt on the outside of the locking screw sleeve, a fixing sleeve on the upper side of the locking screw sleeve and an adjustment sleeve on the inside of the locking screw sleeve. The fixing sleeve and the adjustment fixing part are respectively arranged in the front-to-back direction and the vertical direction. The fixing sleeve is fixed in the middle part of the fixing rod 10 and is also connected to the wire as a connecting electrode. The middle part of the welding gun 2 is inserted in the adjustment sleeve and locked by the locking bolt.

[0016] Preferably, a through hole 19 is provided on the side plate 9 in the embodiment of the present invention, and the wire passes forward from the through hole on the front side plate 9 .

[0017] Among them, the support frame 16 in the embodiment of the present invention includes a hard support frame and a soft support frame, and the upper part of the pressing plate 5 is bent outward for avoidance; the hard support frame and the soft support frame are both arranged in the front-to-back direction, the front end of the hard support frame is fixed on the top plate 8 and the rear end thereof is provided with a ring sleeve along the vertical direction; the recovery suction nozzle 4 is fixed in the ring sleeve, and its lower end is located on the adjacent inner side of the upper front end of the pressing plate 5; the soft support frame is a steel wire structure, the front end of which is hooked in the through hole 19 of the side plate 9 on the rear side, and the rear end thereof is fixedly connected to the lower part of the recovery suction nozzle 4. The technical solution provided by the embodiment of the present invention has the following beneficial effects: the embodiment of the present invention provides a welding assembly for a box beam, the bracket can be adjusted up and down adaptively, the welding gun (around the axis in the front and rear direction) and the pressing plate (around the vertical axis) can be adjusted adaptively, and the welding gun and the pressing plate can be ensured to fit the box beam and avoid damage. In addition, the welding assembly has a compact structure. At the same time, the welding gun can also be adjusted up and down according to actual conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of a welding assembly of a box beam in an embodiment of the present invention; Figure 2 yes Figure 1 A partial enlarged view of Figure 3 It is a structural schematic diagram of the pressure plate buffer structure; Figure 4 It is a structural schematic diagram of the combination of the side plate and the welding gun buffer structure.

[0019] In the figure: 1 mounting seat, 2 welding gun, 3 box beam, 4 recovery nozzle, 5 pressing plate, 6 vertical pulley, 7 horizontal pulley, 8 top plate, 9 side plate, 10 fixing rod, 11 adjustment fixing part, 12 welding gun buffer structure, 13 pressing plate buffer structure, 14 vertical buffer structure, 15 notch, 16 support frame, 17 vertical fixing plate, 18 horizontal fixing plate, 19 through hole; 21 swing arm, 22 baffle, 23 first spring; 31 rotating shaft, 32 transverse arm, 33 hinge seat, 34 tension spring, 35 screw fixing plate, 36 screw, 37 tension spring mounting seat; 41 upper sleeve, 42 lifting column, 43 limiting ear. DETAILED DESCRIPTION

[0020] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] Example 1 See also Figure 1-4 Embodiment 1 provides a box beam welding assembly, including a bracket and a mounting seat 1 thereon, a welding gun 2, a recovery nozzle 4, a material holding plate 5, two vertical pulleys 6 and two horizontal pulleys 7. The recovery nozzle 4 is used to recover the flux, which is located directly behind the welding gun 2, fixed to the rear side of the bracket, located above the box beam 3, and connected to the hopper above through a pipeline.

[0022] The bracket includes a top plate 8, two side plates 9, a fixing rod 10, an adjustment fixing 11, a welding gun buffer structure 12, a pressure plate buffer structure 13 and a vertical buffer structure 14. The top plate 8 is arranged in the front-to-back direction. The two side plates 9 are arranged side by side in the front and back directions, and are arranged vertically. They are respectively located at the lower front end and the lower rear end of the top plate 8. The lower part is bent inward to form a bending part, and a through hole 19 is provided on it (to reduce weight and routing), and a notch 15 is provided at the bottom (specifically located at the bottom of the bending part). The fixing rod 10 is arranged in the front-to-back direction, and is located between the two side plates 9. It is rotatably arranged on the side plate 9, and one end (specifically the rear end) of it extends relative to the side plate 9 on the corresponding side (fixedly connected to the swing arm 21), and it is specifically a round rod. The welding gun 2 is located between the two side plates 9 and is adjustably fixed (up and down) on the fixing rod 10 by adjusting the fixing 11. The recovery nozzle 4 is fixed on the top plate 8 or the rear side plate 9 through the support frame 16. The pressing plate 5 is arranged in the front-to-back direction, and it abuts against the outer side of the box beam 3, and it is located in the notch 15. It can move outward, and it is arranged near the outer side of the notch 15. Two vertical pulleys 6 are arranged side by side in the front-to-back direction, and they are arranged vertically, and they abut against the outer side of the box beam 3, and they are respectively arranged at the bottom of the two side plates 9, and they are located on the outer side of the notch 15. Two transverse pulleys 7 are arranged side by side in the front-to-back direction, and they abut against the top of the box beam 3, and they are respectively arranged at the bottom of the two side plates 9, and they are located on the inner side of the notch 15.

[0023] The vertical buffer structure 14 is disposed between the upper side of the top plate 8 and the mounting seat 1 , and is vertically disposed so as to allow the top plate 8 to elastically move in the vertical direction.

[0024] The welding gun buffer structure 12 is arranged between one end (front end or rear end) of the fixed rod 10 and the corresponding side plate 9, and is specifically located at the upper part of the bent portion. The welding gun buffer structure 12 includes a swing arm 21 at the end of the fixed rod 10, two baffles 22 on the corresponding side plate 9 and located on both sides of the swing arm 21, and a first spring 23 between the swing arm 21 and the outer baffle 22. The swing arm 21 can swing between the two baffles 22, and the swing arm 21 rests on the inner baffle 22. Specifically, the first spring 23 is perpendicular to the swing arm 21.

[0025] The pressure plate buffer structure 13 is arranged between the outer side of the pressure plate 5 and the side plate 9. The pressure plate buffer structure 13 includes a rotating shaft 31 arranged vertically in the middle of the outer side of the pressure plate 5, a transverse arm 32 arranged in the left and right directions, a hinge seat 33 on one side plate 9 (the side plate 9 on the front side or the side plate 9 on the rear side), and a tension spring 34 on another side plate 9 (the side plate 9 on the rear side or the side plate 9 on the front side). The transverse arm 32 is located between the two side plates 9, the middle of which is hinged on the hinge seat 33, the inner end of which is hinged to the pressure plate 5 through the rotating shaft 31, and the outer end of which is connected to the other end (front end or rear end) of the tension spring 34.

[0026] Among them, see Figure 1 The vertical buffer structure 14 in the embodiment of the present invention includes an upper sleeve 41, a limiting ear 43 on the rear side of the upper sleeve 41, a lifting column 42 inserted in the upper sleeve 41, and a second spring in the upper sleeve 41. A flat key and a key slot that cooperate with each other are provided between the upper sleeve 41 and the lifting column 42 in the vertical direction so that the lifting column 42 can only move vertically. The upper sleeve 41 and the lifting column 42 are both arranged vertically and are respectively arranged on the lower side of the mounting seat 1 and the upper side of the top plate 8. The lifting column 42 can move up and down in the upper sleeve 41, but cannot slide out of the upper sleeve 41. The limiting ear 43 is located directly above the welding gun 2 and has an oblong hole on its upper edge in the left and right directions. The welding gun 2 is located on the inner side of the top plate 8, and its upper end is slidably arranged in the oblong hole and can move up and down in the oblong hole. There are limiting convex rings on it and above and below the limiting ear 43. The second spring is arranged vertically and is disposed between the upper side of the lifting column 42 and the lower side of the mounting seat 1 .

[0027] Further, referring to 1-2 and 4, the notch 15 in the embodiment of the present invention is a vertically arranged rectangular opening, and its inner side is shorter than the outer side. A vertical fixing plate 17 (a total of four pieces) is provided on the side plate 9 and located on the inner side of the notch 15 in the vertical direction, and a horizontal fixing plate 18 (a total of four pieces) is provided at the bottom of the side plate 9 and located on the outer side of the notch 8 in the front-to-back direction. Both the vertical fixing plate 17 and the horizontal fixing plate 18 are located on the side of the side plate 9 away from the welding gun 2; specifically, for the side plate 9 on the front side, the vertical fixing plate 17 and the horizontal fixing plate 18 are located on the front side of the side plate 9; for the side plate 9 on the rear side, the vertical fixing plate 17 and the horizontal fixing plate 18 are located on the rear side of the side plate 9. The vertical fixing plate 17 is located above the inner side of the corresponding horizontal fixing plate 18, the transverse pulley 7 is provided on the inner side of the corresponding vertical fixing plate 17, and the vertical pulley 6 is provided on the lower side of the corresponding horizontal fixing plate 18.

[0028] Among them, see Figure 1 The adjusting fixture 11 in the embodiment of the present invention includes a locking screw sleeve arranged in the left-right direction, a locking bolt (arranged in the left-right direction) outside the locking screw sleeve, a fixing sleeve on the upper side of the locking screw sleeve, and an adjusting sleeve inside the locking screw sleeve, etc. The fixing sleeve and the adjusting fixture are arranged in the front-back direction and vertical direction respectively. The fixing sleeve is fixed in the middle of the fixing rod 10 and is also connected to the wire (through the through hole on the side plate 9 on the front side) as a connecting electrode. The middle part of the welding gun 2 is inserted in the adjusting sleeve and locked by the locking bolt. The welding gun 2 can be adjusted up and down by loosening the locking bolt.

[0029] Among them, see Figure 1 The support frame 16 in the embodiment of the present invention includes a hard support frame and a soft support frame, and the upper part of the pressing plate 5 is bent outward to avoid the position. The hard support frame and the soft support frame are both arranged in the front-to-back direction, and the front end of the hard support frame is fixed on the top plate 8 and the rear end thereof is provided with a ring sleeve in the vertical direction. The recovery nozzle 4 is fixed in the ring sleeve, and its lower end is located on the adjacent inner side of the upper front end of the pressing plate 5. The soft support frame is a steel wire structure, and its front end is hooked in the through hole 19 of the side plate 9 on the rear side, and its rear end is fixedly connected to the lower part of the recovery nozzle 4, which allows the recovery nozzle 4 to swing slightly.

[0030] Example 2 See also Figure 1 and 4 Embodiment 2 provides a welding assembly of a box beam, and its structure is basically the same as that of Embodiment 1, except that: the swing arm 21 in this embodiment is located at the lower side of the fixing rod 10, and is arranged obliquely inward from top to bottom, and its upper end is fixed to the rear end of the fixing rod 10, and is located adjacent to the rear side plate 9 of the rear side, and its lower end is against the inner baffle 22. The baffle 22 is arranged obliquely inward from top to bottom. The first spring 23 is arranged obliquely inward from bottom to top.

[0031] Example 3 See also Figure 1-3 Embodiment 3 provides a welding assembly of a box beam, and its structure is basically the same as that of Embodiment 2, except that: the hinge seat 33 in this embodiment is arranged at the lower rear part of the front side plate 9 and is located outside the notch 15. The inner end of the horizontal arm 32 is connected to the upper end of the rotating shaft 31, the middle part of the upper side is hinged to the hinge seat 33 through a vertical pin shaft, and the lower side of the outer end is connected to the front end of the tension spring 34. A screw fixing plate 35 is provided on the outer side of the rear side plate 9 along the left-right direction, and a screw 36 that can be adjusted forward and backward (locked by two nuts, and can be adjusted by loosening the nuts) is provided on the screw fixing plate 35. The screw 36 is arranged along the front-back direction and a tension spring mounting seat 37 is provided at the front end. The tension spring 34 is arranged along the front-back direction and its rear end is fixed to the tension spring mounting seat 37.

[0032] Example 4 See also Figure 4 Embodiment 4 provides a box beam welding assembly, the structure of which is basically the same as that of embodiment 1, except that: two through holes 19 are arranged side by side on the side plate 9 in this embodiment. The through holes 19 are specifically circular holes, and the wires pass forward from the through holes on the upper part of the front side plate 9.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A box beam welding assembly, comprising a bracket and a mounting seat (1) thereon, a welding gun (2), a recovery nozzle (4), a pressure plate (5), two vertical pulleys (6) and two transverse pulleys (7), wherein the recovery nozzle (4) is located directly behind the welding gun (2), the pressure plate (5) is arranged in the front-to-back direction and abuts against the outer side of the box beam (3); the two vertical pulleys (6) are arranged side by side in the front-to-back direction and abut against the outer side of the box beam (3); the two transverse pulleys (7) are arranged side by side in the front-to-back direction and abut against the top of the box beam (3); characterized in that The bracket comprises a top plate (8) arranged in the front-to-back direction, two side plates (9) arranged side by side on the lower side of the top plate (8), a fixing rod (10) arranged in the front-to-back direction between the two side plates (9), an adjustment fixing member (11) on the fixing rod (10), a welding gun buffer structure (12) between one end of the fixing rod (10) and the corresponding side plate (9), a pressing plate buffer structure (13) between the outer side of the pressing plate (5) and the side plate (9), and a vertical buffer structure (14) between the upper side of the top plate (8) and the mounting seat (1), the bottom of the side plate (9) is provided with a notch (15), and the pressing plate (11) is provided with a vertical buffer structure (14) between the upper side of the top plate (8) and the mounting seat (1). 5) is located in the notch (15) and can move outward, two vertical pulleys (6) are respectively arranged at the bottom of the two side plates (9) and are located outside the notch (15), two transverse pulleys (7) are respectively arranged at the bottom of the two side plates (9) and are located inside the notch (15), the fixing rod (10) is rotatably arranged on the side plate (9), the welding gun (2) is located between the two side plates (9) and is adjustably fixed on the fixing rod (10) by adjusting the fixing member (11), and the recovery nozzle (4) is fixed on the top plate (8) or the rear side plate (9) by a support frame (16); The welding gun buffer structure (12) comprises a swing arm (21) at the end of the fixed rod (10), two baffles (22) on the corresponding side plates (9) and located on both sides of the swing arm (21), and a first spring (23) between the swing arm (21) and the outer baffle (22), wherein the swing arm (21) rests against the inner baffle (22); The pressure plate buffer structure (13) comprises a rotating shaft (31) vertically arranged in the middle of the outer side of the pressure plate (5), a transverse arm (32) arranged in the left and right directions, a hinge seat (33) on one side plate (9) and a tension spring (34) on the other side plate (9); the transverse arm (32) is located between the two side plates (9), the middle part of which is hinged on the hinge seat (33), the inner end of which is hinged to the pressure plate (5) through the rotating shaft (31), and the outer end of which is connected to the other end of the tension spring (34).

2. The welding assembly of the box beam according to claim 1, characterized in that: The vertical buffer structure (14) comprises an upper sleeve (41), a limiting ear (43) on the outer side of the upper sleeve (41), a lifting column (42) inserted in the upper sleeve (41) and a second spring in the upper sleeve (41); the upper sleeve (41) and the lifting column (42) are both arranged vertically and are respectively arranged on the lower side of the mounting seat (1) and the upper side of the top plate (8); the lifting column (42) can move up and down in the upper sleeve (41); the limiting ear (43) is located directly above the welding gun (2) and has an oblong hole on its upper edge in the left and right directions; the welding gun (2) is located on the inner side of the top plate (8), and its upper end is slidably arranged in the oblong hole and can move up and down in the oblong hole; the second spring is arranged vertically and is arranged between the upper side of the lifting column (42) and the lower side of the mounting seat (1).

3. The welding assembly of the box beam according to claim 1, characterized in that: The lower part of the side plate (9) is bent inward to form a bent portion, the welding gun buffer structure (12) is located at the upper part of the bent portion, and the notch (15) is located at the bottom of the bent portion.

4. The welding assembly of the box beam according to claim 1, characterized in that: The notch (15) is a vertically arranged rectangular opening. A vertical fixing plate (17) is arranged on the side plate (9) and located on the inner side of the notch (15) in the vertical direction. A horizontal fixing plate (18) is arranged at the bottom of the side plate (9) and located on the outer side of the notch (8) in the front-to-back direction. The vertical fixing plate (17) and the horizontal fixing plate (18) are both located on the side of the side plate (9) away from the welding gun (2). The vertical fixing plate (17) is located above the inner side of the corresponding horizontal fixing plate (18). The transverse pulley (7) is arranged on the inner side of the corresponding vertical fixing plate (17). The vertical pulley (6) is arranged on the lower side of the corresponding horizontal fixing plate (18). The pressing plate (5) is arranged close to the outer side of the notch (15).

5. The welding assembly of the box beam according to claim 3, characterized in that: The swing arm (21) is located at the lower side of the fixed rod (10), and is arranged obliquely inward from top to bottom. Its upper end is fixed to the rear end of the fixed rod (10), and is located adjacent to the rear side plate (9) on the rear side, and its lower end is against the inner baffle (22).

6. The welding assembly of the box beam according to claim 1, characterized in that: The hinge seat (33) is arranged at the lower rear part of the front side plate (9) and is located on the outside of the notch (15); the inner end of the horizontal arm (32) is connected to the upper end of the rotating shaft (31), the middle part of the upper side is hinged to the hinge seat (33) through a vertical pin shaft, and the lower side of the outer end is connected to the front end of the tension spring (34); the tension spring (34) is arranged in the front-to-back direction, and the rear end thereof is connected to the lower part of the rear side plate (9).

7. The welding assembly of the box beam according to claim 6, characterized in that: A screw fixing plate (35) is provided on the outer side of the rear side side plate (9) in the left-right direction, and a screw (36) that can be adjusted forward and backward is provided on the screw fixing plate (35). The screw (36) is arranged in the front-back direction and a tension spring mounting seat (37) is provided at the front end thereof, and the rear end of the tension spring (34) is fixed on the tension spring mounting seat (37).

8. The welding assembly of the box beam according to claim 1, characterized in that: The adjusting fixture (11) comprises a locking screw sleeve arranged in the left-right direction, a locking bolt on the outside of the locking screw sleeve, a fixing sleeve on the upper side of the locking screw sleeve and an adjusting sleeve on the inside of the locking screw sleeve. The fixing sleeve and the adjusting fixture are arranged in the front-back direction and the vertical direction respectively. The fixing sleeve is fixed on the middle part of the fixing rod (10) and is also connected to the wire as a connecting electrode. The middle part of the welding gun (2) is inserted into the adjusting sleeve and is locked by the locking bolt.

9. The welding assembly of the box beam according to claim 8, characterized in that: The side plate (9) is provided with a through hole (19), and the wire passes forward through the through hole on the front side plate (9).

10. The welding assembly of the box beam according to claim 9, characterized in that: The support frame (16) includes a hard support frame and a soft support frame, and the upper part of the pressing plate (5) is bent outward to avoid the position; the hard support frame and the soft support frame are both arranged in the front-to-back direction, the front end of the hard support frame is fixed on the top plate (8) and the rear end thereof is provided with a ring sleeve in the vertical direction; the recovery suction nozzle (4) is fixed in the ring sleeve, and its lower end is located on the adjacent inner side of the upper front end of the pressing plate (5); the soft support frame is a steel wire structure, and its front end is hooked in the through hole (19) of the side plate (9) on the rear side, and its rear end is fixedly connected to the lower part of the recovery suction nozzle (4).

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