Environment-friendly gantry welding machine

Abstract

The invention relates to the technical field of welding equipment, in particular to an environment-friendly gantry welding machine which comprises a workbench, a gantry and a welding gun, sliding rails matched with the gantry are arranged on the left side and the right side of the workbench in the front-back direction, and a driving device used for driving the welding gun to move left and right and move up and down is arranged on a cross beam of the gantry. The driving part of the driving device is provided with a mounting structure for mounting a welding gun; in the welding process, the front supporting wheels drive the corresponding bowl-shaped steel wire brushes to rotate reversely, steel wires on the bowl-shaped steel wire brushes brush and sweep welding seams which are not welded, meanwhile, brushed impurities splash forwards, the situation that the welding quality is affected due to the fact that the impurities exist at the welding seams is prevented, and the technical problem that insufficient welding occurs due to the fact that the impurities exist at the welding seams is solved.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, in particular to an environmentally friendly gantry welding machine. Background Art

[0002] I-beams and H-beams are long strips of steel with I- or H-shaped cross-sections. They consist of a web and wing plates welded on both sides of the web. During the welding process, the wing plates are usually first fixed on the web for spot welding, and then full welding is performed after spot welding is completed to form a complete weld.

[0003] Traditionally, full welding is generally performed manually, which consumes a lot of human resources, has high labor costs and low efficiency; and the traditional manual welding method is closely related to the skills of the operator, has high requirements on the workers, and the welding quality cannot be guaranteed.

[0004] At present, there is a gantry welding device for full welding of I-beams and H-beams, such as the gantry welding device for I-beam processing disclosed in the Chinese patent publication number CN217142831U, which discloses a welding slide rail and a gantry frame. The gantry frame is provided with a plurality of welding mechanisms, the welding mechanism includes a connecting frame fixed to the gantry frame, and a bracket for mounting a welding gun is installed on the connecting frame through a position adjustment mechanism (so that the bracket can move up and down and move laterally adaptively). Although the device can improve the welding quality by making the bracket move up and down and move laterally adaptively through the position adjustment mechanism; however, the device still has some defects: 1. The device can only weld one weld of a workpiece at a time, and the welding efficiency needs to be improved; 2. The two support wheels of the device are not vertically rolled on the corresponding plate surface (the center of the support wheel axle is not vertically rolled on the corresponding plate surface). The axis is not parallel to the corresponding plate surface), when a plate surface becomes uneven (there are convex or concave areas), the support wheel will drive the welding gun to deviate upward and away from the convex direction, or downward and close to the concave direction, that is, the welding gun deviates from the weld, resulting in the weld here not being welded; 3. Since impurities may adhere to the weld accessories, if they are not cleaned, the welds with impurities adhered to them using the device are prone to cold welding; 4. Due to certain differences in the inner plate surfaces of I-beam and H-beam flanges, the angle between the inner plate surface of the I-beam flange and the corresponding web plate surface is an obtuse angle (90+N degrees), and the angle between the inner plate surface of the H-beam flange and the corresponding web plate surface is a right angle. However, the two support wheels of the device do not have the function of adjusting the angle, so the device cannot adapt well to the welding of H-beams, limiting its applicability.

[0005] To this end, we have designed an environmentally friendly gantry welding machine to solve at least one of the above-mentioned defects. Summary of the invention

[0006] In order to overcome the deficiencies in the background technology, the present invention discloses an environmentally friendly gantry welding machine.

[0007] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme: An environmentally friendly gantry welding machine comprises a workbench, a gantry, and a welding gun. The left and right sides of the workbench are both provided with slide rails matching the gantry along the front-back direction. The cross beam of the gantry is provided with a driving device for driving the welding gun to move left and right and up and down. The driving part of the driving device is provided with a mounting structure for mounting the welding gun. The mounting structure includes a 45-degree inclined rod whose inner end is connected to the driving part of the driving device, the welding gun is installed on the outer end of the 45-degree inclined rod, and a front wheel frame is provided in front of the outer end of the 45-degree inclined rod, and the front wheel frame is provided with a front supporting wheel that is vertically rolled on the web plate surface of the I-beam or H-beam, and the front supporting wheel axle is connected to a bowl-shaped wire brush that rotates in the opposite direction on the side corresponding to the weld to be welded, so as to brush forward impurities at the weld to be welded; a rear wheel frame is provided behind the outer end of the 45-degree inclined rod, and the rear wheel frame is provided with a rear supporting wheel that is vertically rolled on the web plate surface of the I-beam or H-beam, and the rear supporting wheel axle is provided with a bowl-shaped wire brush on the side corresponding to the weld to brush backward the weld skin at the weld after welding.

[0008] Preferably, the front wheel frame is rotatably connected to two transmission wheels which are perpendicular to the front supporting wheel, and one end of the front supporting wheel axle corresponding to the bowl-shaped wire brush is rotatably connected to a rotating seat for installing the bowl-shaped wire brush, and the rotating seat, the two transmission wheels and the other end of the front supporting wheel axle are connected by belt drive.

[0009] Preferably, the inner end of the 45-degree tilt rod is correspondingly connected to the driving part of the driving device through an adaptive adjustment structure; The adaptive adjustment structure comprises a fixed shell connected to the driving part of the driving device, a sliding frame is connected to the inner side of the fixed shell so as to slide up and down or left and right, a sliding block is connected to the inner side of the sliding frame so as to slide left and right or up and down, and compression springs are arranged between the two ends of the sliding frame corresponding to the sliding direction and the fixed shell, and between the sliding block and the sliding frame corresponding to the sliding direction; Wherein, the inner end of the 45-degree inclined rod is correspondingly connected to the sliding block.

[0010] Preferably, two mounting structures are symmetrically arranged in an upper and lower manner, so as to facilitate simultaneous welding of two welds on the same side of an I-beam or an H-beam.

[0011] Preferably, the inner ends of the 45-degree inclined rods in the two mounting structures are correspondingly connected to the driving part of the driving device through the up and down adjustment structure, so as to adapt to the webs of I-beams or H-beams with different widths; The up-and-down adjustment structure includes a vertical slide rail, and the vertical slide rail is matched with two sliding seats arranged at intervals up and down, and the two sliding seats are connected to the inner ends of the two 45-degree inclined rods in a one-to-one correspondence; The up and down adjustment structure also includes a driving device for driving the two sliding seats to move up and down.

[0012] Preferably, the middle part of the side of the vertical slide rail away from the mounting structure is correspondingly connected to the driving part of the driving device through a rotary positioner to facilitate the upper and lower position switching of the two mounting structures.

[0013] Preferably, two of the driving devices and the mounting structures are symmetrically provided on the left and right, so as to facilitate simultaneous welding of two sides of the same weld of an I-beam or H-beam.

[0014] Preferably, the driving device comprises a walking device that walks on the gantry crossbeam, a vertical transformer is provided at the bottom of the walking device, and the vertical transformer lifting part is provided with the mounting structure.

[0015] Preferably, the rear supporting wheel and the corresponding bowl-shaped wire brush are connected to rotate in the same direction, and the rotation speed of the bowl-shaped wire brush is greater than the rotation speed of the rear supporting wheel.

[0016] Preferably, the gantry crossbeam is provided with a vacuum cleaner, and the suction end of the vacuum cleaner is correspondingly connected to the mounting structure.

[0017] Due to the adoption of the above-mentioned technical solution, the present invention has the following beneficial effects: 1. During the welding process, the front support wheel drives the corresponding bowl-shaped wire brush to rotate in the opposite direction. The steel wire on the bowl-shaped wire brush brushes the unwelded welds, and the impurities brushed off splash forward to prevent impurities from existing in the welds and affecting the welding quality. This solves the technical problem of cold welding caused by impurities in the welds. 2. During the welding process, the rear support wheel drives the corresponding bowl-shaped wire brush to rotate, and the bowl-shaped wire brush brushes the weld skin on the surface after welding, thus realizing the function of cleaning the weld skin; 3. The setting of the adaptive adjustment structure and the transmission structure between the front support wheel and the rotating seat can adjust the position of the welding gun in real time according to the flatness of the workpiece, that is, the straightness of the weld, to prevent the welding gun from deviating from the weld and affecting the welding quality, thereby realizing the function of improving the welding quality.

[0018] 4. The rotary positioner and the mounting structure are symmetrically provided with two of them, and the driving device is symmetrically provided with two of them, so that the gantry can complete the welding operation of a workpiece with high quality when it moves from front to back or from back to front, thereby improving the welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a rear view of the present invention; Figure 3 It is a front view of the present invention; Figure 4 It is a structural schematic diagram of the installation structure in the present invention; Figure 5 It is a schematic diagram of the structure of the front wheel frame, the front support wheel and the bowl-shaped wire brush in the present invention; Figure 6 It is a schematic diagram of the adaptive adjustment structure in the present invention.

[0020] In the figure: 1. workbench; 2. gantry; 21. slide rail; 3. welding gun; 4. driving device; 41. walking device; 42. vertical positioner; 5. mounting structure; 51. 45 degree tilt rod; 52. front wheel frame; 521. transmission wheel; 53. front support wheel; 531. rotating seat; 54. bowl-shaped wire brush; 55. rear wheel frame; 56. rear support wheel; 6. adaptive adjustment structure; 61. fixed shell; 62. sliding frame; 63. sliding block; 64. compression spring; 7. up and down adjustment structure; 71. vertical slide rail; 72. sliding seat; 8. rotary positioner; 9. vacuum cleaner. DETAILED DESCRIPTION

[0021] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. indicating directions or positional relationships, they only correspond to the drawings of the present application and are for the convenience of describing the present invention; it should be understood that if there are terms such as "end", "side", "end portion", "lateral", "lateral", "transverse", "longitudinal", etc. indicating directions or positional relationships, they only correspond to the length and width of the corresponding components, that is, the "end portion" indicates the head and tail areas in the length direction of the corresponding component, and the "side portion" indicates the head and tail areas in the width direction of the corresponding component; this is for the convenience of describing the present invention and is not to indicate or imply that the device or element referred to must have a specific direction.

[0022] Embodiment 1, in combination with the attached Figure 1-3 An environmentally friendly gantry welding machine includes a workbench 1, a gantry 2, and a welding gun 3. The left and right sides of the workbench 1 are provided with slide rails 21 matching the gantry 2 along the front-to-back direction. The crossbeam of the gantry 2 is provided with a driving device 4 for driving the welding gun 3 to move left and right and up and down.

[0023] As needed, combine with Figure 1-2The driving device 4 includes a walking device 41 that walks on the crossbeam of the gantry 2, a vertical positioner 42 is provided at the bottom of the walking device 41, and a mounting structure 5 is provided at the lifting part of the vertical positioner 42; further, the walking device 41 has a moving part and a driving device that drives the moving part to move; for ease of understanding, the walking device 41 and the crossbeam of the gantry 2 can be regarded as horizontal positioners in the prior art, and therefore, the specific structure of the walking device 41 will not be further described here.

[0024] Combined with Figure 4-5 The mounting structure 5 includes an inner end corresponding to the driving part of the driving device 4, a welding gun 3 is installed on the outer end of a 45-degree inclined rod 51, a front wheel frame 52 is provided in front of the outer end of the 45-degree inclined rod 51, and a front supporting wheel 53 is installed on the front wheel frame 52, which is vertically rolled on the web plate surface of the I-beam or H-beam. The front supporting wheel 53 has a bowl-shaped wire brush 54 connected to the wheel axle corresponding to the weld seam in the opposite direction; a rear wheel frame 55 is provided at the rear of the outer end of the 45-degree inclined rod 51, and a rear supporting wheel 56 is installed on the rear wheel frame 55, which is vertically rolled on the web plate surface of the I-beam or H-beam. A bowl-shaped wire brush 54 is provided on the wheel axle of the rear supporting wheel 56 corresponding to the weld seam.

[0025] It should be noted that: the counter-rotating connection between the axle of the front supporting wheel 53 and the corresponding bowl-shaped wire brush 54 can be understood as that the rotation direction of the axle of the front supporting wheel 53 is opposite to the rotation direction of the bowl-shaped wire brush 54; that is, when the front supporting wheel 53 is rolling the web surface of the I-beam or H-beam, the rotation direction of the side of the front supporting wheel 53 corresponding to the web surface of the I-beam or H-beam is toward the side of the welding gun 3, while the rotation direction of the side of the bowl-shaped wire brush 54 corresponding to the web surface of the I-beam or H-beam is away from the welding gun 3.

[0026] It should be noted that the web of the I-beam or H-beam to be welded after assembly is vertically arranged, that is, the outer plate surface of one of the wing plates of the I-beam or H-beam is horizontally pressed onto the upper surface of the workbench 1 .

[0027] Furthermore, the welding machine corresponding to the welding gun 3 can be installed on the gantry 2 or on the moving part of the driving device 4. The installation is carried out according to the convenience of operation, and no specific limitation is made at this time.

[0028] When in use, first place the I-beam or H-beam to be welded after assembly on the upper surface of the workbench 1, then move the 45-degree tilting rod 51 through the driving device 4, so that the head of the welding gun 3 contacts the weld, and at the same time, the front supporting wheel 53 rolls on the web of the workpiece, and the rear supporting wheel 56 rolls on the inner plate surface of the wing plate, and then the gantry 2 is moved to drive the welding gun 3 to move forward for welding. At the same time, the rotation of the front supporting wheel 53 drives the corresponding bowl-shaped wire brush 54 to rotate in the opposite direction, and the steel wire on the bowl-shaped wire brush 54 brushes the unwelded weld, and the impurities brushed off splash forward at the same time, preventing impurities from existing in the weld and affecting the welding quality, thereby solving the technical problem of false welding caused by impurities in the weld; at the same time, the rotation of the rear supporting wheel 56 drives the corresponding bowl-shaped wire brush 54 to rotate, and the bowl-shaped wire brush 54 brushes the surface weld skin after welding, and the weld skin brushed off splashes backward, thereby realizing the function of cleaning the weld skin.

[0029] Furthermore, in order to improve the brushing quality of the bowl-shaped wire brush 54, the front supporting wheel 53 and the corresponding bowl-shaped wire brush 54 are speed-increasingly transmitted, that is, the rotation rate of the bowl-shaped wire brush 54 is greater than the rotation rate of the front supporting wheel 53; the rear supporting wheel 56 and the corresponding bowl-shaped wire brush 54 are connected for same-direction rotation, and the rear supporting wheel 56 and the corresponding bowl-shaped wire brush 54 are speed-increasingly transmitted, that is, the rotation speed of the bowl-shaped wire brush 54 is greater than the rotation speed of the rear supporting wheel 56.

[0030] Furthermore, the rear support wheel 56 and the corresponding bowl-shaped wire brush 54 can be accelerated by a planetary speed increaser; it should be noted that the planetary speed increaser is simply a reverse installation of the planetary reducer, that is, the high-speed input shaft of the planetary reducer is correspondingly connected to the bowl-shaped wire brush 54, and the low-speed output shaft of the planetary reducer is correspondingly connected to the axle of the rear support wheel 56, and its structure is not described in detail here.

[0031] Furthermore, in order to improve environmental protection efficiency, the crossbeam of the gantry 2 is provided with a vacuum cleaner 9, and the suction end of the vacuum cleaner 9 is correspondingly connected to the mounting structure 5; According to the needs, three suction ends of the vacuum cleaner 9 can be provided, one is located behind the bowl-shaped wire brush 54 corresponding to the rear support wheel 56, one is located in front of the bowl-shaped wire brush 54 corresponding to the front support wheel 53, and one is located near the welding gun 3. The suction end of the vacuum cleaner 9 can be fixed by the fixing method in the prior art, which will not be described in detail here.

[0032] Furthermore, in order to make the gantry welding machine applicable to both H-beam welding and I-beam welding, the connection between the rear wheel frame 55 and the 45-degree tilting rod 51 is fixedly connected in an angle-adjustable manner, that is, the connection is made through a rotating structure with a locking function, so that when the rear support wheel 56 and the 45-degree tilting rod 51 are at a 45-degree position, the position of the rear wheel frame 55 can be fixed, and when the axle of the rear support wheel 56 and the 45-degree tilting rod 51 are at a 45+N-degree position, the position of the rear wheel frame 55 can be fixed. For example, the 45-degree tilting rod 51 has two circular mounting holes, and the rear wheel frame 55 has one circular mounting hole and the other is an arc-shaped mounting hole, which are connected by bolts. At this time, the bolts corresponding to the arc-shaped mounting holes can move relative to the arc-shaped mounting holes, thereby causing the rear wheel frame 55 to rotate, thereby realizing the function of adjusting the angle of the rear support wheel 56; for another example, in combination with the attached Figure 4 The 45-degree inclined rod 51 is provided with three circular mounting holes, and the rear wheel frame 55 is provided with three circular mounting holes. The two groups of corresponding mounting holes are connected by two bolts, so that the rear support wheel 56 is rolled on the inner surface of the H-shaped steel or I-shaped steel wing plate. The two groups of corresponding mounting holes are connected by two bolts (one group of corresponding mounting holes is replaced), so that the rear support wheel 56 is rolled on the inner surface of the I-shaped steel or H-shaped steel wing plate. The rotating structure with a locking function can also be other structures in the prior art, which will not be listed one by one here.

[0033] Embodiment 2, combined with the attached Figure 1-2 An environmentally friendly gantry welding machine is disclosed. On the basis of the first embodiment, the position of the welding gun 3 can be adjusted in real time according to the flatness of the workpiece, that is, the straightness of the weld. It should be noted that when the wing plate of the workpiece is convex or concave, the position of the weld corresponding to it will also be offset outward or inward; when the web of the workpiece is convex or concave, the position of the weld corresponding to it will also be offset upward or downward. In order to ensure the welding quality, the welding gun 3 should also be offset accordingly.

[0034] The inner end of the 45-degree tilt rod 51 is correspondingly connected to the driving part of the driving device 4 through the adaptive adjustment structure 6; Combined with Figure 6The adaptive adjustment structure 6 includes a fixed housing 61 correspondingly connected to the driving part of the driving device 4, a sliding frame 62 is connected to the inner side of the fixed housing 61 for sliding up and down or left and right sliding, a sliding block 63 is connected to the inner side of the sliding frame 62 for sliding up and down or left and right sliding, and compression springs 64 are arranged between the two ends of the sliding frame 62 corresponding to its sliding direction and the fixed housing 61, and between the sliding block 63 corresponding to its sliding direction and the sliding frame 62; that is, when the sliding block 63 is subjected to left and right or up and down forces, it can move left and right or up and down correspondingly, and when the sliding frame 62 is subjected to up and down or left and right forces, it can move up and down or left and right correspondingly; that is, when the web of the workpiece is convex or concave, the 45-degree tilting rod 51 can move left or right correspondingly, thereby driving the welding gun 3 to move left or right; similarly, when the wing plate of the workpiece is convex or concave, the 45-degree tilting rod 51 can move upward or downward correspondingly, thereby driving the welding gun 3 to move upward or downward. The inner end of the 45-degree tilting rod 51 is correspondingly connected to the sliding block 63.

[0035] Preferably, the smaller the distance between the front support wheel 53 and the rear support wheel 56 and the welding gun 3 is, the better the effect is, and the smaller the distance between the front support wheel 53 and the rear support wheel 56 and the weld is, the better the effect is.

[0036] Therefore, the size between the front support wheel 53 and the weld should be reduced as much as possible; Figure 5 The front wheel frame 52 is rotatably connected to two transmission wheels 521 which are perpendicular to the front support wheel 53. The front support wheel 53 axle is rotatably connected to one end of the bowl-shaped wire brush 54. The rotating seat 531, the two transmission wheels 521 and the other end of the axle of the front support wheel 53 are connected by belt transmission. The bowl-shaped wire brush 54 and the front support wheel 53 are arranged in this way so that the bowl-shaped wire brush 54 and the front support wheel 53 can rotate in the opposite direction with only a width for the belt to pass around, thereby reducing the distance between the bowl-shaped wire brush 54 and the front support wheel 53 as much as possible, and ensuring the coaxial arrangement between the bowl-shaped wire brush 54 and the front support wheel 53.

[0037] According to needs, the transmission wheel 521 is a belt pulley, and the wheel shaft of the front support wheel 53 and the rotating seat 531 can be provided with a belt groove matching the belt, or a belt pulley matching the belt can be installed.

[0038] Embodiment 3, in combination with the attached Figure 1-3 An environmentally friendly gantry welding machine, based on the first or second embodiment, in order to improve the welding efficiency, the mounting structure 5 is symmetrically provided with two upper and lower parts, so that the two welds on the same side of the I-beam or H-beam can be welded simultaneously.

[0039] Furthermore, in order to adapt to the webs of I-beams or H-beams with different widths, the inner ends of the 45-degree inclined rods 51 in the two mounting structures 5 are correspondingly connected to the driving part of the driving device 4 through the up and down adjustment structure 7; that is, the up and down spacing between the two 45-degree inclined rods 51 can be adjusted through the up and down adjustment structure 7.

[0040] Combined with Figure 2-3 The up and down adjustment structure 7 includes a vertical slide rail 71, and the vertical slide rail 71 is matched with two sliding seats 72 arranged at an upper and lower interval. The two sliding seats 72 are connected to the inner ends of the two 45-degree tilting rods 51 in a one-to-one correspondence; the up and down adjustment structure 7 also includes a driving device for driving the two sliding seats 72 to move up and down; that is, the corresponding sliding seat 72 can be driven by the driving device to move upward or downward to achieve the corresponding upper and lower positions of the 45-degree tilting rod 51.

[0041] As required, the driving device can be a screw motor, which drives the corresponding sliding seat 72 to move up and down. As required, the driving device can also be a bidirectional screw motor, through which the two screw parts of the bidirectional screw motor are connected to the two sliding seats 72 one by one, so that the two sliding seats 72 can move synchronously and in opposite directions.

[0042] It should be noted that: one of the sliding seats 72 can be fixedly installed on the vertical slide rail 71, and the other sliding seat 72 can be correspondingly connected to the driving part of the driving device. In this way, the upper and lower distances between the two 45-degree tilt rods 51 can be adjusted by only adjusting the upper and lower positions of one sliding seat 72.

[0043] Embodiment 4, in combination with the attached Figure 1-3 , an environmentally friendly gantry welding machine, based on the third embodiment, further improves the welding efficiency; the middle part of the side of the vertical slide rail 71 away from the mounting structure 5 is correspondingly connected to the driving part of the driving device 4 through the rotating positioner 8, that is, the two mounting structures 5 are switched up and down through the rotating positioner 8. At this time, the front support wheel 53 is located behind the corresponding welding gun 3, and the rear support wheel 56 is located in front of the corresponding welding gun 3. At this time, the gantry 2 can realize the welding operation of the weld during the backward movement.

[0044] In this way, when the gantry 2 moves forward, the workpiece is welded from back to front. After the welding is completed, when the replaced workpiece is welded, it is only necessary to switch the upper and lower positions of the two mounting structures 5 by rotating the positioner 8 to weld the weld of the workpiece from front to back. There is no need for the gantry 2 to run empty from front to back and then weld the weld of the workpiece from back to front. Therefore, the empty running time of the gantry 2 can be reduced, thereby improving the welding efficiency.

[0045] Embodiment 5, in combination with the attached Figure 1-3An environmentally friendly gantry welding machine, based on the first or second embodiment, has two drive devices 4 and two mounting structures 5 symmetrically arranged on the left and right, so that both sides of the same weld of an I-beam or H-beam can be welded simultaneously.

[0046] When this embodiment is implemented on the basis of the third embodiment, both sides of the upper and lower welds of the I-beam or H-beam can be welded simultaneously, that is, the welding operation of the workpiece is completed at one time, thereby further improving the welding efficiency.

[0047] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and it is intended that all changes that fall within the meaning and scope of equivalent elements are included in the present invention.

Claims

1. An environmentally friendly gantry welding machine, comprising a workbench (1), a gantry (2), and a welding gun (3), wherein the left and right sides of the workbench (1) are both provided with slide rails (21) matching the gantry (2) along the front-rear direction, and the crossbeam of the gantry (2) is provided with a driving device (4) for driving the welding gun (3) to move left and right and up and down, characterized in that: The driving part of the driving device (4) is provided with a mounting structure (5) for mounting the welding gun (3); The mounting structure (5) comprises a 45-degree inclined rod (51) whose inner end is connected to a driving part of a driving device (4); the welding gun (3) is mounted on the outer end of the 45-degree inclined rod (51); a front wheel frame (52) is provided in front of the outer end of the 45-degree inclined rod (51); a front support wheel (53) is mounted on the front wheel frame (52) and is vertically rolled on the web plate surface of an I-beam or an H-beam; a bowl-shaped wire brush (54) is connected to the wheel axle of the front support wheel (53) on the side corresponding to the weld seam so as to be reversely rotated, so as to facilitate forward brushing of impurities at the weld seam to be welded; a rear wheel frame (55) is provided at the rear of the outer end of the 45-degree inclined rod (51); a rear support wheel (56) is mounted on the rear wheel frame (55) and is vertically rolled on the web plate surface of an I-beam or an H-beam; a bowl-shaped wire brush (54) is provided on the wheel axle of the rear support wheel (56) on the side corresponding to the weld seam so as to facilitate backward brushing of weld skin at the weld seam after welding.

2. The environmentally friendly gantry welding machine according to claim 1, characterized in that: The front wheel frame (52) is rotatably connected to two transmission wheels (521) that are both perpendicular to the front support wheel (53); one end of the axle of the front support wheel (53) corresponding to the bowl-shaped wire brush (54) is rotatably connected to a rotating seat (531) for mounting the bowl-shaped wire brush (54); the rotating seat (531), the two transmission wheels (521) and the other end of the axle of the front support wheel (53) are connected via a belt drive.

3. The environmentally friendly gantry welding machine according to claim 1, characterized in that: The inner end of the 45-degree tilting rod (51) is correspondingly connected to the driving part of the driving device (4) via the adaptive adjustment structure (6); The adaptive adjustment structure (6) comprises a fixed housing (61) correspondingly connected to the driving part of the driving device (4); a sliding frame (62) is connected to the inner side of the fixed housing (61) so as to slide up and down or left and right; a sliding block (63) is connected to the inner side of the sliding frame (62) so as to slide left and right or up and down; and compression springs (64) are provided between the two ends of the sliding frame (62) corresponding to the sliding direction and the fixed housing (61), and between the sliding block (63) and the sliding frame (62) corresponding to the sliding direction; Wherein, the inner end of the 45-degree inclined rod (51) is correspondingly connected to the sliding block (63).

4. The environmentally friendly gantry welding machine according to claim 1 is characterized in that: The mounting structures (5) are provided with two symmetrical upper and lower parts, so as to facilitate simultaneous welding of two welds on the same side of an I-beam or an H-beam.

5. The environmentally friendly gantry welding machine according to claim 4, characterized in that: The inner ends of the 45-degree inclined rods (51) in the two mounting structures (5) are correspondingly connected to the driving part of the driving device (4) through the up and down adjustment structure (7) so as to adapt to the webs of I-beams or H-beams with different widths; The up-and-down adjustment structure (7) comprises a vertical slide rail (71), the vertical slide rail (71) is matched with two sliding seats (72) arranged at intervals up and down, and the two sliding seats (72) are connected to the inner ends of the two 45-degree tilting rods (51) in a one-to-one correspondence; The up and down adjustment structure (7) also includes a driving device for driving the two sliding seats (72) to move up and down.

6. The environmentally friendly gantry welding machine according to claim 5, characterized in that: The middle part of the side of the vertical slide rail (71) away from the mounting structure (5) is correspondingly connected to the driving part of the driving device (4) through a rotary positioner (8) to facilitate the upper and lower position switching of the two mounting structures (5).

7. The environmentally friendly gantry welding machine according to claim 1, characterized in that: The driving device (4) and the mounting structure (5) are both symmetrically provided with two, so as to facilitate simultaneous welding of two sides of the same weld of an I-beam or H-beam.

8. The environmentally friendly gantry welding machine according to claim 1, characterized in that: The driving device (4) comprises a walking device (41) that walks on the crossbeam of the gantry (2), a vertical transformer (42) being provided at the bottom of the walking device (41), and a lifting part of the vertical transformer (42) being provided with the mounting structure (5).

9. The environmentally friendly gantry welding machine according to claim 1, characterized in that: The rear support wheel (56) and the corresponding bowl-shaped wire brush (54) are connected to rotate in the same direction, and the rotation speed of the bowl-shaped wire brush (54) is greater than the rotation speed of the rear support wheel (56).

10. The environmentally friendly gantry welding machine according to claim 1, characterized in that: The crossbeam of the gantry (2) is provided with a dust collector (9), and the suction end of the dust collector (9) is correspondingly connected to the mounting structure (5).

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