Translational open-close type coil

Abstract

The invention discloses a translational open-close type coil. The translational open-close type coil comprises a plurality of longitudinal coil units, a coil lifting cylinder, a substrate, a fixed plate, a guiding rod and a guiding seat, wherein each longitudinal coil unit comprises a coil with an inverted U-shaped structure, a coil loop rod, a coil supporting frame and a coil closing cylinder; the coil closing cylinder can drive the coil loop rod to move, so that the other end of the coil loop rod can be inserted in or separated from a wiring seat arranged at the lower end part of the left side part of the coil with the inverted U-shaped structure; the coil supporting frames of the plurality of longitudinal coil units are arranged on the lower end surface of the substrate in sequence; the two adjacent longitudinal coil units are connected by flexible leads, so that the plurality of longitudinal coil units form an integrally-connected coil; the coil lifting cylinder is arranged on the fixed plate; a piston rod of the coil lifting cylinder is connected with the substrate; the guiding seat is arranged on the fixed plate; the lower end of the guiding rod is arranged on the substrate; and the guiding rod is arranged in the guiding seat in a penetrating manner.

Description

Technical field [0001] The invention relates to a railway vehicle inspection and flaw detection equipment, in particular to a translational open-close coil. Background technique [0002] The quality of railway vehicle parts, such as wheel sets, will directly affect the safe operation of trains. In order to ensure the good technical status of railway vehicle parts and provide data support, it is necessary to perform flaw detection through flaw detectors. For example, the flaw detection of the pair of wheels includes the axle and wheel rim area to determine whether the tested parts have defects. The same applies to the motor rotor and optical axis. When the flaw detector is longitudinally magnetizing the inspected axle, the longitudinal magnetizing coil adopts an open-close coil. The opening and closing coil includes a left and right opening and closing device and a top and bottom opening and closing device that are enclosed in mutually perpendicular directions. The left and righ...

AI Technical Summary

Problems solved by technology

Due to the many nodes and complicated connections of the above-mentioned open-close coil, failures often occur in actual use, resulting in current disconnection, unable to form an effective longitudinal magnetic field, and poor working reliability.

At the same time, because the above-mentioned split coil cannot be moved, the compatibility with the workpiece size is poor. For example, the wheel set has a large diameter range of the wheel cake, and the height of the axle of the wheel set is inconsistent. If the above-mentioned split coil is used, the detection range is small and it is difficult to meet the requirements. Detection of various wheel sets, poor adaptability

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