Stable welding equipment for steel structure

Abstract

The invention discloses stable welding equipment for a steel structure, and relates to the technical field of steel structure welding, the stable welding equipment comprises a welding machine assembly and a base, the welding machine assembly is fixedly mounted on the back surface of the base, a welding platform and a welding auxiliary mechanism are arranged on the upper surface of the base, and the welding auxiliary mechanism is arranged on the upper surface of a covering plate; the welding auxiliary mechanism comprises a pressing frame arranged on the upper surface of the welding platform, two connecting strips are fixedly connected to the upper surface of the pressing frame, a plurality of covering plates are inserted into the connecting strips, guide pieces are fixedly connected to the lower surfaces of the covering plates, and guide grooves are formed in the surfaces of the covering plates and the surfaces of the guide pieces. A guide column is slidably inserted into the guide groove, so that the problem that the outer layer of a welding seam is in contact with a large amount of oxygen due to the fact that argon is only temporarily located at the welding seam position of the welding head, and the welding seam which is not solidified or solidified but still has high temperature in the moving process of the welding head still makes contact with the external oxygen is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of steel structure welding, and more particularly to a stable welding device for steel structures. Background Art

[0002] Steel structure welding equipment refers to equipment used to weld steel or steel components into an integral structure. It can complete high-efficiency and high-quality welding of steel beams, steel columns, trusses and other components in factories or construction sites.

[0003] When welding steel parts, the welding head is needed to instantly melt the joint area of ​​the two steel parts into a liquid molten pool. The atoms in the molten pool diffuse and recrystallize with each other, and then cool and solidify under the protection of the outer gas and slag, eventually forming a continuous weld with the same strength as the parent material between the two metals, making them one. In the welding process, although argon gas can be used to prevent the molten pool from coming into contact with oxygen and oxidizing during welding, argon gas is only in the weld part of the welding head for a short time. During the movement of the welding head, the weld that has not yet solidified or has solidified but still has a high temperature will still come into contact with external oxygen, causing the outer layer of the weld to come into contact with a large amount of oxygen to form cracks, etc., resulting in a decrease in strength and toughness. The appearance is also prone to blackening, affecting the beauty of the welding. Summary of the Invention

[0004] In response to the problems existing in the prior art, the purpose of the present invention is to provide a stable welding equipment for steel structures to solve the problem that argon gas is only in the weld part of the welding head for a short time, and the weld that has not yet solidified or has solidified but still has a high temperature will still come into contact with external oxygen during the movement of the welding head, causing the outer layer of the weld to come into contact with a large amount of oxygen.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A stable welding device for steel structures includes a welding machine assembly and a base. The welding machine assembly is fixedly installed on the back of the base. The upper surface of the base is provided with a welding platform and a welding auxiliary mechanism. The welding auxiliary mechanism is provided on the upper surface of a cover plate. The welding auxiliary mechanism includes a pressing frame provided on the upper surface of the welding platform. Two connecting strips are fixedly connected to the upper surface of the pressing frame. A plurality of cover plates are inserted into the interior of the connecting strips. A guide plate is fixedly connected to the lower surface of the cover plate. Guide grooves are provided on the surfaces of the plurality of cover plates and the guide plates. Guide columns are slidably inserted into the interior of the guide grooves. A plurality of guide columns are fixedly inserted into the interior of the connecting strips. A welding head is installed on the surface of the welding machine assembly.

[0007] Furthermore, a push cover is fixedly provided on the lower end of the welding head. The push cover is located between the two groups of guide pieces and inside the pressing frame. The cross-sectional shape of the guide piece is a right-angled trapezoid.

[0008] Furthermore, support columns are fixedly connected to both sides of the left and right ends of the cover plate, and a rubber strip is fixedly connected between the two support columns.

[0009] Furthermore, a stable adaptability mechanism is provided on the upper surface of the base, and the stable adaptability mechanism includes a ball socket fixedly connected to the upper surface of the base, a ball head is provided inside the ball socket, the upper surface of the ball head is fixedly connected to a connecting column, the top of the connecting column is fixedly connected to the lower surface of the welding platform, the front end of the welding machine assembly is fixedly connected to a crossbeam, the left and right ends of the crossbeam are fixedly connected to hydraulic rods, and the bottom end of the hydraulic rod is fixedly connected to the left and right ends of the pressing frame.

[0010] Furthermore, the ball head and the ball socket form a ball and socket assembly.

[0011] Furthermore, the blind corners of the upper surface of the base are all fixedly connected with support seats.

[0012] Furthermore, a welding auxiliary mechanism is provided on the surface of the hydraulic rod, and the welding auxiliary mechanism includes a protrusion fixedly connected to the two fixing parts of the hydraulic rod, a horizontal bar is fixedly connected between the two protrusions, a plurality of grooves are provided on the lower surface of the horizontal bar, a connecting block is fixedly sleeved on the surface of the welding head, a vertical plate is fixedly connected to the upper surface of the connecting block, a roller is rotatably connected to the top end of the vertical plate, and the roller is adapted to the plurality of grooves.

[0013] Furthermore, a rotating shaft is fixedly connected to the front surface of the connecting block, and a handle is rotatably sleeved on the surface of the rotating shaft.

[0014] Furthermore, a support rod is fixedly connected to the surface of the handle, a spiral spring is fixedly sleeved on the outer surface of the rotating shaft, and an outer ring end of the spiral spring is fixedly connected to the surface of the support rod.

[0015] Furthermore, an airbag is fixedly connected between the two protrusions, a connecting frame is fixedly connected to the rear surface of the connecting block, the internal rotation of the connecting frame is connected to two extrusion shafts, the airbag is located between the two extrusion shafts, the airbag is long and strip-shaped, and the interior of the airbag is filled with air.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) When welding steel parts, this solution covers the molten pool generated at the welding site with a cover plate. After the argon gas is ejected from the welding head, most of the argon gas is still on the weld, which allows the argon gas to stay longer. The molten pool generated during the welding process can still be protected by the argon gas before it is completely cooled and solidified, thereby reducing contact with external oxygen and increasing the coverage of the argon gas, thereby achieving a better protection effect.

[0017] (2) In the process of welding steel parts, the shield plate covers the welding part, which can shield the sparks generated during the welding process and prevent the presence of stains on the surface of the steel parts from causing sparks to fly during the welding process, thereby ensuring the welding safety of the workers. In addition, during the welding process, the pushing cover is guided by the pressing frame, so that the moving path of the welding head and the pushing cover is a straight line, providing higher welding quality for the welding process.

[0018] (3) When welding steel parts, this solution places the steel parts on the welding platform, and adjusts the welding platform and the steel parts to make the welding part of the steel parts in a horizontal state. Then, the pressing frame is driven downward by the hydraulic rod to press the pressing frame on the surface of the steel parts, so that the welding part of the steel parts remains in a horizontal state, so as to facilitate horizontal surface welding of the steel parts. Compared with inclined surface welding, welding on the horizontal surface is more convenient and less likely to cause deflection.

[0019] (4) In the process of moving the welding head, the cooperation between the roller and the multiple grooves can make the welding head repeatedly swing slightly to prevent the molten pool from falling. In addition, the accuracy during the swinging process is higher than that of manual operation by the staff, which can provide better welding quality.

[0020] (5) This solution will continuously squeeze the airbag during the movement of the welding head. As the moving speed of the welding head increases, the airbag will produce a damping effect. The resistance generated by the squeezing between the airbag and the extrusion shaft will also increase with the increase in speed. If the moving speed of the welding head is too fast, it can prevent the welding head from moving too fast, resulting in a thin weld or uneven weld thickness, which affects the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of the stable adaptation mechanism of the present invention; Figure 3 It is a structural schematic diagram of the pressing frame part of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 It is a structural schematic diagram of the guide plate part of the present invention; Figure 6It is a structural schematic diagram of the welding head part of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point B in the middle; Figure 8 It is a schematic structural diagram of the airbag part of the present invention.

[0022] Description of the numbers in the figure: 1. Welding machine assembly; 2. Base; 301, cover plate; 302, rubber strip; 303, pressing frame; 304, connecting strip; 305, guide column; 306, guide groove; 307, push cover; 308, welding head; 309, support column; 310, guide plate; 311, welding platform; 401, ball and socket; 402, ball head; 403, support seat; 404, connecting column; 405, crossbeam; 406, hydraulic rod; 501, bump; 502, horizontal bar; 503, airbag; 504, handle; 505, vertical plate; 506, roller; 507, groove; 508, connecting block; 509, connecting frame; 510, rotating shaft; 511, scroll spring; 512, support rod; 513, extrusion shaft. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-Figure 5, a stable welding equipment for steel structure, including a welding machine assembly 1 and a base 2, the welding machine assembly 1 is fixedly mounted on the back of the base 2, the welding machine assembly 1 provides argon and energy, so that the welding head 308 can weld steel parts, and a welding platform 311 is provided on the upper surface of the base 2 for placing the steel parts to be welded, a welding auxiliary mechanism, the welding auxiliary mechanism is arranged on the upper surface of the cover plate 301, the welding auxiliary mechanism includes a pressing frame 303 arranged on the upper surface of the welding platform 311, the upper surface of the pressing frame 303 is fixedly connected to two connecting strips 304, a plurality of cover plates 301 are inserted into the interior of the connecting strips 304, the cover plate 301 covers the molten pool generated at the welding part, and after the argon gas is ejected from the welding head 308, there is still argon gas under the cover plate 301, that is, before the molten pool is completely cooled and solidified, it can still be protected by the argon gas, thereby reducing the contact with external oxygen, improving the coverage range of the weld and the durability of the argon gas to achieve better protection effect. At the same time, the cover plate 301 can cover the sparks generated during the welding process, prevent the presence of stains on the surface of the steel part from causing flying sparks during the welding process, and ensure the welding safety of the workers. In addition, during the welding process, the pressing frame 303 guides the push cover 307, so that the moving path of the welding head 308 and the push cover 307 is a straight line, providing higher welding quality during the welding process.

[0025] Among them, the lower surface of the cover plate 301 is fixedly connected to a guide piece 310, and the surfaces of the multiple cover plates 301 and the guide pieces 310 are provided with guide grooves 306, and the guide grooves 306 are slidably inserted with guide columns 305, and the multiple guide columns 305 are fixedly inserted into the interior of the connecting strip 304. A welding head 308 is installed on the surface of the welding machine assembly 1, and steel parts can be welded by moving the welding head 308.

[0026] Among them, the lower end of the welding head 308 is fixedly sleeved with a push cover 307, and the push cover 307 is located between the two groups of guide plates 310 and inside the pressing frame 303. The cross-sectional shape of the guide plate 310 is a right-angled trapezoid. The push cover 307 is squeezed with the inclined surface of the guide plate 310, so that the two guide plates 310 at corresponding positions in the two groups drive the cover plate 301 to move away from each other, so that the welding head 308 can move normally. The left and right ends of the cover plate 301 are fixedly connected to both sides with support columns 309, and the two support columns 309 are fixedly connected with a rubber strip 302. The cover plate 301 after the welding head 308 passes can be pushed by the rubber strip 302 to the corresponding two cover plates 301 to merge, so as to re-cover the molten pool generated at the welding position.

[0027] By adopting the above technical solution, when welding steel parts, the steel parts to be welded are placed on the welding platform 311, so that the steel parts are located between the welding platform 311 and the pressing frame 303, and the part of the steel parts to be welded is located under the strip hole in the middle of the pressing frame 303. Then, the welding head 308 is pushed to move, and the welding machine assembly 1 provides argon and energy, and the steel parts are welded by the moving welding head 308.

[0028] When welding steel parts, the movement of the welding head 308 drives the push cover 307 to move. The push cover 307 squeezes the inclined surface of the guide piece 310, so that the two guide pieces 310 at the corresponding positions in the two groups drive the cover plates 301 to move away from each other. At this time, the thrust generated by the movement of the cover plates 301 can make the rubber strips 302 open and be in a stretched state, so that the push cover 307 pushes the multiple cover plates 301 away in sequence, so that the welding head 308 can move in a straight line between the two groups of cover plates 301. After the welding head 308 passes, the covering plate 301 is gradually pushed in sequence by the rubber strip 302 until the corresponding two covering plates 301 are merged, and the molten pool generated at the welding position is covered again. After the argon gas is ejected from the welding head 308, most of the argon gas is still in the space below the covering plate 301, so that the argon gas is retained for a longer time, that is, the molten pool generated during the welding process can still be protected by the argon gas before it is completely cooled and solidified, thereby reducing the contact with external oxygen, improving the coverage range of the argon gas and the durability of the weld to achieve better protection effect.

[0029] like Figure 2 As shown, a stable adaptability mechanism is provided on the upper surface of the base 2, and the stable adaptability mechanism includes a ball socket 401 fixedly connected to the upper surface of the base 2, a ball head 402 is provided inside the ball socket 401, a connecting column 404 is fixedly connected to the upper surface of the ball head 402, the top of the connecting column 404 is fixedly connected to the lower surface of the welding platform 311, the front end of the welding machine assembly 1 is fixedly connected to a crossbeam 405, the left and right ends of the crossbeam 405 are fixedly connected to hydraulic rods 406, the bottom end of the hydraulic rod 406 is fixed to the pressing frame 303 The left and right ends are fixedly connected, and the hydraulic rod 406 drives the pressing frame 303 to press on the surface of the steel part, so that the welding part of the steel part can be kept in a horizontal state. The ball head 402 and the ball socket 401 form a ball socket assembly, which can be freely adjusted at multiple angles. The welding platform 311 and the steel part are adjusted to make the welding part of the steel part in a horizontal state. The dead corners of the upper surface of the base 2 are fixedly connected with the support seat 403, and the welding platform 311 can be supported by the support seat 403 to prevent the welding platform 311 from tilting too much and causing the steel part to slip when placed on the welding platform 311.

[0030] By adopting the above technical solution, when welding steel parts, the steel parts are placed on the welding platform 311. If the steel parts are in a sloped shape such as a triangle, the welding part of the steel parts is on an inclined surface when the steel parts are placed on the welding platform 311. Since the ball socket seat 401 and the ball head 402 form a ball socket assembly, it can be freely adjusted at multiple angles. Therefore, when the steel parts are placed on the welding platform 311, the welding platform 311 and the steel parts are adjusted to make the welding part of the steel parts in a horizontal state. Then, the pressing frame 303 is driven downward by the hydraulic rod 406 so that the pressing frame 303 is pressed on the surface of the steel parts. Since the pressing frame 303 is in a horizontal state, as the pressing frame 303 is pressed on the surface of the steel parts, the welding part of the steel parts can be kept in a horizontal state, and then the steel parts can be welded.

[0031] like Figure 6-Figure 8 As shown, a welding auxiliary mechanism is provided on the surface of the hydraulic rod 406, and the welding auxiliary mechanism includes a protrusion 501 fixedly connected to the fixing parts of the two hydraulic rods 406, a horizontal bar 502 is fixedly connected between the two protrusions 501, and a plurality of grooves 507 are provided on the lower surface of the horizontal bar 502. A connecting block 508 is fixedly sleeved on the surface of the welding head 308, and a vertical plate 505 is fixedly connected to the upper surface of the connecting block 508. The top of the vertical plate 505 is rotatably connected to a roller 506, and the roller 506 is adapted to the plurality of grooves 507. As the roller 506 moves, the roller 506 disengages from the groove 507 on the horizontal bar 502, and the connecting block 508 and the welding head 308 can be rotated. The front surface of the block 508 is fixedly connected to a rotating shaft 510, and a handle 504 is rotatably provided on the surface of the rotating shaft 510, and a support rod 512 is fixedly connected to the surface of the handle 504. The outer surface of the rotating shaft 510 is fixedly provided with a spiral spring 511, and the outer ring end of the spiral spring 511 is fixedly connected to the surface of the support rod 512. When the roller 506 moves to the bottom of the next groove 507, the spiral spring 511 can drive the roller 506 to move to the next groove 507, and as the welding head 308 continues to move, the above steps are repeated, so that the welding head 308 repeatedly swings slightly, which can prevent the molten pool from falling, and the accuracy during the swinging process is higher than the manual operation accuracy of the staff, thereby providing a better welding effect.

[0032] Among them, an airbag 503 is fixedly connected between the two protrusions 501, and the airbag 503 can produce a damping effect. The faster the extrusion shaft 513 moves, the greater the resistance generated by the extrusion between the airbag 503 and the extrusion shaft 513. When the welding head 308 moves, if the moving speed is too fast, it can play a deceleration effect to prevent the welding head 308 from moving too fast, resulting in a thin weld or uneven weld thickness, which affects the welding quality. The rear surface of the connecting block 508 is fixedly connected to a connecting frame 509, and the internal rotation of the connecting frame 509 is connected to two extrusion shafts 513. The airbag 503 is located between the two extrusion shafts 513. During the movement of the welding head 308, the extrusion shaft 513 will continuously squeeze the airbag 503 filled with air. The airbag 503 is long and the interior of the airbag 503 is filled with air.

[0033] By adopting the above technical solution, during the process of welding steel parts, the staff holds the handle 504 to push the welding head 308 to move. During the movement of the welding head 308, the connecting block 508 and the roller 506 can be driven to move synchronously. Since the roller 506 is located inside the groove 507, as the welding head 308 and the roller 506 move, the roller 506 disengages from the groove 507 on the horizontal bar 502, so that the connecting block 508 and the welding head 308 can be rotated. Until the roller 506 moves to the bottom of the next groove 507, the scroll spring 511 drives the roller 506 to move to the next groove 507. As the welding head 308 continues to move, the above steps are repeated, so that the welding head 308 can repeatedly swing slightly, which can prevent the molten pool from falling, and the accuracy during the swinging process is higher than that of the staff's manual operation, which can provide better welding effects.

[0034] Since the long strip of airbag 503 is located between the two extrusion shafts 513, the airbag 503 filled with air will be continuously squeezed during the movement of the welding head 308. As the moving speed of the welding head 308 increases, the airbag 503 can produce a damping effect. The faster the moving speed of the extrusion shaft 513, the greater the resistance generated by the extrusion between the airbag 503 and the extrusion shaft 513. If the moving speed of the welding head 308 is too fast, it can have a deceleration effect, preventing the welding head 308 from moving too fast, resulting in a thin weld or uneven weld thickness, which affects the welding quality.

[0035] Usage method: First, place the steel parts to be welded on the welding platform 311 so that the steel parts are located between the welding platform 311 and the pressing frame 303; Next, the welding platform 311 and the steel piece are adjusted so that the welding portion of the steel piece is in a horizontal state; Next, the pressing frame 303 is driven downward by the hydraulic rod 406 so that the pressing frame 303 is pressed against the surface of the steel part, so that the welding part of the steel part remains horizontal. Next, grip the handle 504 to push the welding head 308 to move; At the same time, the welding head 308 repeatedly swings to prevent the molten pool from falling. Finally, the steel parts are welded.

[0036] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A stable welding device for steel structures, comprising a welding machine assembly (1) and a base (2), wherein the welding machine assembly (1) is fixedly mounted on the back of the base (2), and a welding platform (311) is provided on the upper surface of the base (2), characterized in that: A welding auxiliary mechanism is provided on the upper surface of a cover plate (301), and the welding auxiliary mechanism comprises a pressing frame (303) provided on the upper surface of a welding platform (311); the upper surface of the pressing frame (303) is fixedly connected to two connecting bars (304); a plurality of cover plates (301) are inserted into the interior of the connecting bars (304); a guide plate (310) is fixedly connected to the lower surface of the cover plate (301); guide grooves (306) are provided on the surfaces of the plurality of cover plates (301) and the guide plates (310); guide posts (305) are slidably inserted into the interior of the guide grooves (306); a plurality of guide posts (305) are fixedly inserted into the interior of the connecting bars (304); and a welding head (308) is mounted on the surface of the welding machine assembly (1).

2. A stable welding device for steel structures according to claim 1, characterized in that: The lower end fixed sleeve of the welding head (308) is provided with a push cover (307), and the push cover (307) is located between the two sets of guide pieces (310) and inside the pressing frame (303). The cross-sectional shape of the guide piece (310) is a right-angled trapezoid.

3. The stable welding equipment for steel structure according to claim 1, characterized in that: Support columns (309) are fixedly connected to both sides of the left and right ends of the cover plate (301), and a rubber strip (302) is fixedly connected between the two support columns (309).

4. The stable welding equipment for steel structure according to claim 1, characterized in that: A stabilizing and adapting mechanism is provided on the upper surface of the base (2), comprising a ball socket (401) fixedly connected to the upper surface of the base (2), a ball head (402) being provided inside the ball socket (401), a connecting column (404) being fixedly connected to the upper surface of the ball head (402), a top end of the connecting column (404) being fixedly connected to the lower surface of the welding platform (311), a crossbeam (405) being fixedly connected to the front end of the welding machine assembly (1), a hydraulic rod (406) being fixedly connected to the left and right ends of the crossbeam (405), and a bottom end of the hydraulic rod (406) being fixedly connected to the left and right ends of the pressing frame (303).

5. The stable welding equipment for steel structure according to claim 4, characterized in that: The ball head (402) and the ball socket (401) form a ball socket assembly.

6. The stable welding equipment for steel structure according to claim 4, characterized in that: The blind corners of the upper surface of the base (2) are all fixedly connected to support seats (403).

7. The stable welding equipment for steel structure according to claim 1, characterized in that: A welding auxiliary mechanism is provided on the surface of a hydraulic rod (406), comprising a protrusion (501) fixedly connected to the fixing parts of two hydraulic rods (406), a horizontal bar (502) fixedly connected between the two protrusions (501), a lower surface of the horizontal bar (502) being provided with a plurality of grooves (507), a connecting block (508) being fixedly sleeved on the surface of the welding head (308), a vertical plate (505) being fixedly connected to the upper surface of the connecting block (508), a roller (506) being rotatably connected to the top end of the vertical plate (505), and the roller (506) being adapted to the plurality of grooves (507).

8. The stable welding equipment for steel structure according to claim 7, characterized in that: A rotating shaft (510) is fixedly connected to the front surface of the connecting block (508), and a handle (504) is rotatably sleeved on the surface of the rotating shaft (510).

9. The stable welding equipment for steel structure according to claim 8, characterized in that: The surface of the handle (504) is fixedly connected to a support rod (512), the outer surface of the rotating shaft (510) is fixedly sleeved with a vortex spring (511), and the outer ring end of the vortex spring (511) is fixedly connected to the surface of the support rod (512).

10. The stable welding equipment for steel structure according to claim 7, characterized in that: An airbag (503) is fixedly connected between the two protrusions (501), a connecting frame (509) is fixedly connected to the rear surface of the connecting block (508), the interior of the connecting frame (509) is rotatably connected to two extrusion shafts (513), the airbag (503) is located between the two extrusion shafts (513), the airbag (503) is in the shape of an elongated strip, and the interior of the airbag (503) is filled with air.

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