Clamping jaw fatigue test device

Abstract

The invention belongs to the technical field of the nondestructive detection and maintenance of the heat transfer tubes of steam generators and relates to a clamping jaw fatigue testing device. The clamping jaw fatigue testing device includes a heat transfer tube fixing structure, a clamping jaw fixing structure, a clamping jaw action structure, a lifting air cylinder, lifting guide shafts and a bottom plate; the bottom plate is of a plate-shaped structure; the lifting air cylinder is arranged in the middle of the bottom plate; the lifting guide shafts are arranged at two sides of the bottom plate respectively; the clamping jaw fixing structure is used for fixing a clamping jaw; the clamping jaw action structure is used for realizing the opening action and closing action of the clamping jaw; the clamping jaw fixing structure is arranged at the upper portion of the clamping jaw action structure; the lower end of the clamping jaw action structure is connected with the output shaft of thelifting air cylinder; the lifting air cylinder pushes the clamping jaw action structure 3 and the clamping jaw fixing structure to move up and down entirely along the lifting guide shafts; the heat transfer tube fixing structure is arranged at the tops of the lifting guide shafts; and the heat transfer tube fixing structure is used for fixing a heat transfer tube. Based on simple module replacement, the method of the invention is suitable for detecting the clamping jaws of all existing nuclear reactor type heat transfer tube positioning robots.

Description

Technical field [0001] The invention belongs to the technical field of non-destructive testing and maintenance of steam generator heat transfer tubes and similar equipment, and specifically relates to a jaw fatigue test device. Background technique [0002] The steam generator is one of the key components in the primary circuit system of a nuclear power plant. To ensure the safe operation of the steam generator and the integrity of the primary circuit system, a crawling positioning robot must be used to vortex the heat transfer tube of the steam generator regularly. Non-destructive testing. The crawling positioning robot relies on the claws to alternately clamp the tube plate of the heat transfer tube to realize the function of positioning the heat transfer tube. [0003] The reliability of the jaws directly determines the stability of the positioning robot and the efficiency of non-destructive testing. The process and manufacturing requirements of the jaws are relatively strict,...

AI Technical Summary

Problems solved by technology

[0004] The existing method is to install the claws on the crawling positioning robot for fatigue testing. In this way, the crawling positioning robot must be disassembled and reassembled first. Every time a claw is changed, the disassembly and assembly process needs to be repeated, which is complicated. The workload is heavy, and the fatigue test must be connected to the entire system of the crawling positioning robot, which is a serious waste of resources. Multiple disassembly and assembly will also affect the overall performance of the crawling positioning robot

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