An Elastic Support Restoration Logging Device for Inner Hidden Trajectory

Abstract

The invention provides an implicit elastic supporting and correcting metering device of a track measuring instrument. The device comprises a shaft base connected with an inertial measuring system anda correcting metering mechanism, the correcting metering mechanism comprises an elastic piece, and a sliding shaft and a plurality of supporting mechanisms meshed with the sliding shaft; the shaft base is internally provided with a cavity, the elastic piece and the sliding shaft are both arranged in the cavity in the axial direction of the cavity, and the elastic piece is located between the inertial measuring system and the sliding shaft; the supporting mechanisms penetrate through the side wall of the cavity and extend out of the shaft base, the end, extending out of the cavity, of each supporting mechanism is provided with a rolling wheel in contact with the inner wall of a pipeline, one or more supporting mechanisms are metering supporting mechanisms, the metering supporting mechanismsare electrically connected with the inertial measuring system, and the rolling wheels on the metering supporting mechanisms are metering rolling wheels. The device has the advantages of being small in axial movement range, large in radial support range and good in sediment-blocking prevention performance.

Description

technical field [0001] The invention relates to the technical field of pipeline track measurement, in particular to an elastically supported uprighting log device for an implicit tracker. Background technique [0002] The measurement of pipeline trajectory plays an important role in the field of geological engineering, such as the general inspection and acceptance of urban underground pipeline network, the three-dimensional trajectory of pipeline is measured by inertial measurement system, and the information system of underground pipeline network is established; in landslide geological disaster monitoring, time-sharing By measuring the trajectory shape of the landslide coupling pipeline, the displacement distribution and other information of the landslide can be obtained through the difference of the pipeline trajectory shape. [0003] The core of pipeline trajectory measurement is the pipeline trajectory measuring instrument (trajector). The tracker is usually a set of si...

AI Technical Summary

Problems solved by technology

The initial tracker is an externally extended support and righting structure, the size of the supporting and righting structure in the axial direction is relatively large, and the overall size of the instrument is too long, resulting in a large turning radius of the instrument and poor measurement traffic; ZL201310747941.7, ZL201320886158.4 , ZL201320886421.X and other Chinese patents have improved the structure of the tracker, and the supporting and erecting structure has been optimized into an external and inward shrinking type, which greatly saves the axial movement space of the instrument, but at the same time introduces another problem, because all The structure shrinks inwardly under the supporting rollers, and the radial movable space of the rollers is greatly restricted, which weakens the performance of the instrument in small-diameter pipes

In addition, in the external support and centralization structure, the support spring is external. When measuring in a pipeline with serious siltation, the spring and sliding parts are easily blocked by sediment, which makes the support structure invalid.

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