Surface pretreatment device for steel member welding

Abstract

The invention belongs to the technical field of steel member machining, and particularly relates to a surface pretreatment device for steel member welding. The device comprises a fixed base, wherein a sliding frame is slidably mounted on the top face of the fixed base, a fixed frame fixedly mounted on the top face of the fixed base, a fixed ring is fixedly mounted on the right end face of the fixed frame, a right outer gear ring rotationally connected to the fixed ring through a right roller is connected with a planetary gear and a driving gear in a meshed mode, the planetary gear is connected with a self-centering clamping jaw through a connecting shaft, a worm wheel fixedly mounted on the driving gear is connected with a worm in a meshed mode, a rotating ring is rotationally mounted in a left through hole formed in the sliding frame through a left roller, a grinding mechanism is fixedly mounted in a connecting ring connected to the right end of the rotating ring, an inner gear ring is mounted on the right end face of the sliding frame, and a left outer gear ring connected to the left end face of the rotating ring is connected with a drive gear in a meshed mode. The self-centering clamping jaw is convenient to replace and can clamp workpieces of different sizes in a self-centering mode, so that the grinding mechanism revolves around the axis of a workpiece to circumferentially grind the workpiece, and the position of a grinding wheel can be linearly adjusted to grind workpieces with different diameters.

Description

technical field [0001] The invention belongs to the technical field of steel component processing, and in particular relates to a surface pretreatment device for steel component welding. Background technique [0002] The steel pipe is a steel with a hollow section whose length is much longer than the diameter or circumference. The steel pipe can be used in underground pipelines, oil, natural gas, steam heating, chemical plants, hydropower stations, sewage treatment plants, thermal power plants, water supply and drainage, etc. When laying and installing, it is necessary to frequently use and weld a large number of tees, elbows, and flanges to connect steel pipes and valves of different diameters and directions. In order to ensure the success rate of welding, it is necessary to weld the welding position of the pipeline. Pre-cleaning to remove the oxide film and oil on the surface of the weldment to prevent pores and slag inclusions; generally speaking, the cleaning methods bef...

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Problems solved by technology

[0003] The existing surface pretreatment device for steel component welding, such as the Chinese invention patent with the application publication number CN 111633501 A, through the design of the eccentric adjustment seat, the driving main shaft and the driving sub-shaft, the device can complete the welding seam of the steel pipe in an automatic manner. All-round grinding work, and through the design of the eccentric adjustment seat, the position of the three grinding wheels can be eccentrically adjusted synchronously. Through the synchronous eccentric adjustment, the device can adjust the grinding radius and grinding intensity formed by the three grinding wheels; However, the adjustment range of the eccentric adjustment seat is limited by the size of the eccentric adjustment seat, which can only be adjusted within a small range, and cannot be applied to two pipes with large diameter differences, and the applicability is low; The clamping and positioning mechanism of the pipe fittings, although the operator can fix the pipe fittings by hand, driving and lifting during processing, but the stability of the pipe fittings is poor during the grinding process, and it is easily shaken by the rotation of the grinding wheel. Second, it is impossible to accurately align the axis of the pipe fitting with the revolution axis of the three grinding wheels, so that the grinding wheel can always maintain a suitable distance and grinding pressure from the circumferential side of the pipe fitting during the revolution process, so the device performs grinding Poor stability and poor grinding effect

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