Suspension rope and stable rope tension online detection device and method in vertical shaft construction

Abstract

The invention provides a suspension rope and stable rope tension online detection device and method in vertical shaft construction. The device is mainly composed of a pressure detecting part arranged on a derrick and a steel wire rope frequency detecting part arranged on the ground of a wellhead. The pressure detecting part mainly comprises a bevel support fixed to the hoisting sheave derrick, a pressure sensor fixedly installed on the bevel of the bevel support, and a bearing pedestal fixedly connected with the pressure sensor; the steel wire rope frequency detecting part mainly comprises a frequency detecting device and a signal acquiring device used for acquiring frequency signals. The propagation frequency of vibration waves on a steel wire rope can be detected regularly through the steel wire rope frequency detecting device arranged on a well lid platform, the tension of the steel wire rope can be obtained according to the length l of the steel wire rope and the rope density rho, measurement errors caused by the upsetting moment of the bearing pedestal can be effectively avoided, and therefore the pressure sensor can be corrected. The device is simple in structure, convenient to operate, capable of performing real-time detection, easy and convenient to install, free of demolition of a stable rope and accurate in measurement and signal transmission is convenient.

Description

technical field [0001] The invention relates to an online detection device and method for the tension of suspension ropes and stabilizing ropes in construction shafts, and is especially suitable for on-line detection of the tensions of suspension ropes and stabilizing ropes in construction shafts. Background technique [0002] At present, the detection of the suspension force of the vertical shaft suspension plate is achieved by installing a tension sensor at the connection between the stable rope and the suspension plate. However, during installation, the stable rope needs to be removed first, and the tension sensor needs to be treated with dustproof and waterproof treatment. Moreover, since the hanging pan will be in a deep position in the shaft after a period of construction, there will be a large tension on the stabilizing rope, resulting in a large torque of the stabilizing rope. When the stabilizing rope is removed, the stabilizing rope will twist violently. It is eas...

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Problems solved by technology

The method of indirect measurement by clamping on the steel wire rope through its lateral force is aimed at the thinner steel wire rope, which can be more convenient to measure, but for the thicker suspension rope and stable rope of the construction shaft hanging pan, due to its short distance and large rigidity Causes the problem of large lateral compression force and inaccurate measurement. At the same time, the steel wire rope will be damaged due to excessive reverse bending; a detection device for measuring the longitudinal deformation of the steel wire rope is clamped on the steel wire rope to indirectly measure the hoisting system. The measurement of wire rope tension must add a set of wireless node transmission equipment, which poses a great challenge to the detection cost

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