Method and device for calibrating top plate dynamic apparatus

Abstract

The invention relates to a method and a device for calibrating a top plate dynamic apparatus, solving the problem of hidden dangers caused by lacking of the method for calibrating the top plate dynamic apparatus. The method comprises the steps of: driving a precise screw by a transmission mechanism through using a step motor operated by a PC machine, and driving an internal screw thread type sliding block measuring pressing head assembled in the precise screw by the precise screw for carrying out precise stroke calibration parallel to the measuring axle line on the top plate dynamic apparatus in a top plate dynamic apparatus clamp which is clamped in a clamp opening and parallel to the measuring axle line. The device comprises the step motor arranged on a stand and a vertical precise screw, wherein an output shaft of the step motor is connected with the precise screw through a timing belt transmission mechanism, the precise screw is matched with the precise internal screw thread type sliding block measuring pressing head, and the lower part of the stand is provided with the top plate dynamic apparatus clamp parallel to the measuring axle line; and the step motor is connected with a step motor drive plate which is connected with the PC machine. The invention has the advantages of good repeatability, stable performance, high reliability and high automatic degree, realizes automatic numerical value simulation of sedimentation and deformation of a mine top plate, and reduces the fund waste brought by blind replacement of enterprises while the capability of monitoring accident potentials of a top plate is improved and the safe production is ensured.

Description

technical field [0001] The invention relates to a calibration device for a displacement detector, in particular to a calibration method and a calibration device for a roof dynamic instrument. Background technique [0002] The Roof Dynamic Instrument is used in underground coal mines to measure the amount and speed of roof and floor movement, forecast stope pressure, and detect the peak position of bearing pressure. It is a basic tool for stope pressure observation. [0003] In recent years, the state has attached great importance to the issue of production safety. Coal mine safety is one of the top priorities. According to the data of the "Eleventh Five-Year Plan for Coal Mine Safety Production (Draft)" of the State Administration of Work Safety and the State Coal Mine Safety Supervision Bureau in April 2006, the roof conditions of coal mines in my country vary greatly. The roofs of most large and medium-sized coal mines belong to type II (locally uneven) and type III (rel...

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Problems solved by technology

[0005] However, this kind of roof dynamic instrument carrying the safety prediction function has no corresponding calibration equipment, so although the roof dynamic instrument is widely used in safety production monitoring, it has no calibration basis and no traceability of the measurement performance. Therefore, its main measurement performance It has not been determined, and another hidden danger has been planted for safe production

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