Portable welding seam grinding self-walking device for improving fatigue prevention performance

Abstract

The invention discloses a portable welding seam grinding self-walking device for improving a fatigue prevention performance. The portable welding seam grinding self-walking device comprises a drivingdevice and a fixed device connected with the driving device. A retractable moving device is connected on the driving device, and the moving device is driven by the driving device to move in a weldingseam grinding direction. A depth control rod used for controlling the grinding depth is connected on the moving device and is connected with a grinding system used for grinding a welding seam. The driving device, the moving device, the depth control rod and the grinding system are respectively connected with a PLC integrated system. The portable welding seam grinding self-walking device can precisely control the grinding depth, is simple and portable, can be applied to the welding seams with different directions and structures, and can intelligently deal with various grinding conditions. Moreover, an annual grinding disc is used, so the stress concentration after grinding is avoided, and therefore the fatigue prevention performance is effectively improved.

Description

technical field [0001] The invention relates to a self-propelled device, in particular to a portable weld seam grinding self-propelled device for improving fatigue prevention performance. Background technique [0002] Due to its advantages in mechanical properties and economic benefits, steel bridge decks have been widely used in the field of bridge engineering. The structure of the steel bridge deck is complex, and welding is still the most important way to connect the components. Due to the huge welding workload, welding defects (welding spatter and welding slag) are unavoidable. Under the coupling effect of welding residual stress and external repeated load, fatigue cracking of weld seam occurs from time to time. Relevant studies have shown that the treatment of weld grinding can improve the quality of welds and improve the fatigue prevention performance of steel bridge decks. The quality of weld grinding is the key to preventing performance improvement. Weld grinding ...

AI Technical Summary

Problems solved by technology

The structure of the steel bridge deck is complex and the precision of the grinding parameters is high. The traditional technical means cannot control the grinding parameters, and it is difficult to guarantee the grinding quality. Using the traditional angle grinder for grinding may cause new stress concentration during the grinding process, resulting in secondary Diseases that directly threaten structural safety in severe cases

In addition, traditional technical means cannot intelligently deal with random grinding conditions such as welding slag and welding nodules, which may easily cause device wear such as idling; and it is not easy to carry, and the shape is fixed and it is difficult to apply to various weld details of steel bridge decks

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