Gantry submerged arc welding machine for steel structure production

Abstract

The utility model relates to the technical field of submerged arc welding, in particular to a gantry submerged arc welding machine for steel structure production. According to the technical scheme, the device comprises a portal frame, an electric push rod is fixedly mounted in the middle of the upper surface of the portal frame, an electric sliding table is fixedly connected to the output end of the electric push rod, and a moving plate is fixedly mounted on the lower surface of the sliding end of the electric sliding table; a welding head, a welding flux pipe, an air nozzle and a wheel carrier are sequentially and fixedly installed on the lower surface of the movable plate from front to back, a brush wheel is rotatably installed in the wheel carrier, a compression air pump is fixedly installed on the upper surface of the movable plate, and the tail end of an output pipe of the compression air pump is fixedly connected to the outer surface of the air nozzle. According to the utility model, dust and impurities at a welding seam are cleaned before the steel structure is welded, so that the welding seam quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of submerged arc welding, in particular to a gantry submerged arc welding machine for steel structure production. Background Art

[0002] Submerged arc welding is a welding method in which an arc burns under a layer of flux. Its inherent advantages, such as stable welding quality, high welding productivity, no arc light and little smoke, make it the main welding method in the production of important steel structures such as pressure vessels, pipe section manufacturing, box beams and columns. Gantry-type submerged arc welding machines are mainly used for welding large steel structures, bridges, pressure vessels and other manufacturing industries.

[0003] At present, the gantry submerged arc welding machine is unable to clean the dust and impurities at the weld of the steel structure during use. The presence of dust and impurities will lead to uneven welds, affect the strength and plasticity of the welds, and may even cause stress concentration and reduce the fatigue strength of the welds. For this reason, we propose a gantry submerged arc welding machine for steel structure production. Utility Model Content

[0004] The purpose of the utility model is to provide a gantry submerged arc welding machine for steel structure production, which has the advantage of cleaning dust and impurities at the weld before steel structure welding, thereby improving the quality of the weld, and solves the problem that the current gantry submerged arc welding machine cannot clean dust and impurities at the weld of the steel structure during use, and the presence of dust and impurities will cause uneven welds, affect the strength and plasticity of the welds, and may even cause stress concentration, reducing the fatigue strength of the welds.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gantry submerged arc welding machine for steel structure production, comprising a gantry, an electric push rod fixedly installed at the middle position of the upper surface of the gantry, the output end of the electric push rod fixedly connected to an electric slide, a movable plate fixedly installed on the lower surface of the sliding end of the electric slide, a welding head, a flux tube, an air nozzle and a wheel frame fixedly installed on the lower surface of the movable plate in sequence from front to back, a brush wheel rotatably installed inside the wheel frame, a compressed air pump fixedly installed on the upper surface of the movable plate, and the end of the compressed air pump output pipe fixedly connected to the outer surface of the air nozzle.

[0006] Preferably, a rotating motor is fixedly mounted on one side of the outer surface of the wheel frame, and the end of the output shaft of the rotating motor is fixedly connected to the outer surface of the brush wheel, and the rotating motor drives the brush wheel to rotate.

[0007] Preferably, movable seats are fixedly installed at both sides of the lower surface of the gantry, and the gantry moves via the two movable seats.

[0008] Preferably, sliding rods are symmetrically fixedly connected at both sides of the upper surface of the electric slide, and the sliding rods pass through the gantry. When the electric push rod drives the electric slide to rise and fall, the sliding rods rise and fall accordingly, and play a guiding and limiting role for the electric slide, thereby improving the stability of the electric slide.

[0009] Preferably, the ends of the two sliding rods are fixedly connected to the limit blocks, and the outer surfaces of the two sliding rods are movably sleeved with coil springs located between the limit blocks and the gantry. When the electric push rod drives the electric slide to descend, the coil springs are compressed, and when the electric push rod drives the electric slide to rise, the compressed coil springs are released, and the elastic energy is applied to the electric slide through the limit blocks and the sliding rods to facilitate the rise of the electric slide.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0011] 1. The utility model achieves the effect of cleaning dust and impurities at the weld before steel structure welding, thereby improving the quality of the weld, by arranging a gantry, an electric push rod, an electric slide, a movable plate, a flux tube, a welding head, an air nozzle, a wheel frame, a brush wheel and a compressed air pump. The electric push rod drives the electric slide to rise and fall, and the sliding end of the electric slide can drive the movable plate to move horizontally to adjust the height and position of the flux tube, the welding head, the air nozzle and the brush wheel to make them close to the weld of the steel structure. During the movement of the gantry, the rotating brush wheel brushes off the dust and impurities at the weld, and at the same time the compressed air pump blows high-pressure gas to the weld through the air nozzle to clean up the dust and impurities at the weld, and then the flux is spread to the weld through the flux tube, and the welding head finally completes the welding work.

[0012] 2. The utility model achieves the effect of improving the stability of the electric slide by setting a sliding rod. When the electric push rod drives the electric slide to rise and fall, the sliding rod rises and falls accordingly, and plays a guiding and limiting role for the electric slide, thereby improving the stability of the electric slide.

[0013] 3. The utility model achieves the effect of facilitating the rising of the electric slide by setting a coil spring and a limit block. When the electric push rod drives the electric slide to descend, the coil spring is compressed. When the electric push rod drives the electric slide to rise, the compressed coil spring is released and the elastic energy is applied to the electric slide through the limit block and the sliding rod to facilitate the rising of the electric slide. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0015] Figure 2 This is a partial three-dimensional schematic diagram of the movable plate of the utility model;

[0016] Figure 3This is a schematic diagram of the main structure of the utility model.

[0017] Figure numerals: 1. Moving seat; 2. Gantry; 3. Sliding rod; 4. Coil spring; 5. Limiting block; 6. Electric push rod; 7. Moving plate; 8. Electric slide; 9. Air nozzle; 10. Flux tube; 11. Welding head; 12. Compressed air pump; 13. Wheel frame; 14. Rotating motor; 15. Brush wheel. DETAILED DESCRIPTION

[0018] The technical solution of the present invention is further described below with reference to the accompanying drawings and specific embodiments.

[0019] Example 1

[0020] like Figure 1-Figure 3 As shown, the utility model proposes a gantry submerged arc welding machine for steel structure production, including a gantry 2, a movable seat 1 is fixedly installed at the positions on both sides of the lower surface of the gantry 2, the gantry 2 moves through the two movable seats 1, an electric push rod 6 is fixedly installed at the middle position of the upper surface of the gantry 2, the output end of the electric push rod 6 is fixedly connected to an electric slide 8, a movable plate 7 is fixedly installed on the lower surface of the sliding end of the electric slide 8, a welding head 11, a flux tube 10, a nozzle 9 and a wheel frame 13 are fixedly installed on the lower surface of the movable plate 7 in sequence from front to back, and a flux box for supplying flux to the flux tube 10 is fixedly installed on the upper surface of the gantry 2 The surface of the wheel frame 13 is fixedly provided with a rotating motor 14, and the end of the output shaft of the rotating motor 14 is fixedly connected to the outer surface of the brush wheel 15. The rotating motor 14 drives the brush wheel 15 to rotate. The upper surface of the movable plate 7 is fixedly provided with a compressed air pump 12, and the end of the output pipe of the compressed air pump 12 is fixedly connected to the outer surface of the air nozzle 9. The compressed air pump 12 delivers high-pressure gas to the inside of the air nozzle 9.

[0021] When the utility model is in use, the electric push rod 6 drives the electric slide 8 to rise and fall, and the sliding end of the electric slide 8 can drive the movable plate 7 to move horizontally to adjust the height and position of the flux tube 10, welding head 11, air nozzle 9 and brush wheel 15, so that they are close to the weld of the steel structure. During the movement of the gantry 2, the rotating brush wheel 15 brushes off the dust and impurities at the weld, and at the same time the compressed air pump 12 blows high-pressure gas to the weld through the air nozzle 9 to clean up the dust and impurities at the weld, and then the flux is spread to the weld through the flux tube 10, and the welding head 11 finally completes the welding work, thereby improving the quality of the weld.

[0022] Example 2

[0023] like Figure 1 and Figure 3As shown, the utility model proposes a gantry submerged arc welding machine for steel structure production. Compared with the first embodiment, this embodiment also includes sliding rods 3 symmetrically fixedly connected at both sides of the upper surface of the electric slide 8, and the sliding rods 3 pass through the gantry 2, and the ends of the two sliding rods 3 are fixedly connected to the limiting blocks 5, and the limiting blocks 5 are located above the gantry 2, and the outer surfaces of the two sliding rods 3 are movably sleeved with coil springs 4 between the limiting blocks 5 and the gantry 2.

[0024] In this embodiment, when the electric push rod 6 drives the electric slide 8 to rise and fall, the sliding rod 3 rises and falls accordingly, and plays a guiding and limiting role on the electric slide 8, thereby improving the stability of the electric slide 8. When the electric push rod 6 drives the electric slide 8 to descend, the coil spring 4 is compressed, and when the electric push rod 6 drives the electric slide 8 to rise, the compressed coil spring 4 is released, and the elastic energy is applied to the electric slide 8 through the limit block 5 and the sliding rod 3 to facilitate the rise of the electric slide 8.

[0025] The above specific embodiments are only several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A gantry submerged arc welding machine for steel structure production, comprising a gantry frame (2), characterized in that: An electric push rod (6) is fixedly installed at the middle position of the upper surface of the gantry (2), the output end of the electric push rod (6) is fixedly connected to an electric slide (8), the lower surface of the sliding end of the electric slide (8) is fixedly installed with a moving plate (7), the lower surface of the moving plate (7) is fixedly installed with a welding head (11), a flux tube (10), an air nozzle (9) and a wheel frame (13) in sequence from front to back, a brush wheel (15) is rotatably installed inside the wheel frame (13), a compressed air pump (12) is fixedly installed on the upper surface of the moving plate (7), and the end of the output pipe of the compressed air pump (12) is fixedly connected to the outer surface of the air nozzle (9).

2. A gantry submerged arc welding machine for steel structure production according to claim 1, characterized in that: A rotating motor (14) is fixedly mounted on one side of the outer surface of the wheel frame (13), and the output shaft end of the rotating motor (14) is fixedly connected to the outer surface of the brush wheel (15).

3. The gantry submerged arc welding machine for steel structure production according to claim 1, characterized in that: Movable seats (1) are fixedly mounted at positions on both sides of the lower surface of the gantry (2).

4. The gantry submerged arc welding machine for steel structure production according to claim 1, characterized in that: Sliding rods (3) are symmetrically fixedly connected at positions on both sides of the upper surface of the electric slide (8), and the sliding rods (3) pass through the gantry (2).

5. A gantry submerged arc welding machine for steel structure production according to claim 4, characterized in that: The ends of the two sliding rods (3) are fixedly connected to the limiting block (5), and the outer surfaces of the two sliding rods (3) are located between the limiting block (5) and the gantry (2) and are movably sleeved with a coil spring (4).

Images