A hard rock hobbing cutter rock breaking characteristic testing device

Abstract

A hard rock hobbing cutter rock breaking characteristic testing device used in the field of tunnel engineering is provided. A rock silo supporting seat is positioned on a guide rail pair and realizes longitudinal motion by a longitudinal-moving hydraulic cylinder; a rock silo is positioned on the rock silo supporting seat and realizes lateral movement by lateral moving hydraulic cylindersfixed on the rock silo supporting seat; rock samples are positioned inside the rock silo. Two columns are vertically arranged at both sides of the rock silo, top ends of the columns are connected by a beam and thus a gantry structure is formed. A vertical hydraulic cylinder is fixed on the beam, and the lower part of the vertical hydraulic cylinder is connected with a walking beam. Under the walking beam, a hobbing cutter is installed to simulate the process of hobbing cutter rock breaking, or a similar hobbing cutter wearing module is installed to simulate the process of similar hobbing cutter wearing. An industrial computer, a data acquisition card, a three-axis force sensor, an acoustic emission device and a high-speed digital camera system are used to monitor the processes of hobbing cutter rock breaking and wearing. The device is capable of simulating the process of rolling-type rock breaking of the hobbing cutter, the process of rolling and impact-combined type rock breaking of the hobbing cutter and the process of similar hobbing cutter wearing.

Description

technical field [0001] The invention relates to a test device for a TBM (hard rock tunnel boring machine) excavation tool for simulating rock cutting in the field of tunnel engineering, in particular to a test device for rock breaking characteristics of a hard rock hob. Background technique [0002] In recent years, with the urgent need of my country's underground space engineering construction and the improvement of science and technology, TBM has been widely used in the construction of tunnel projects such as railway tunnels, municipal pipelines, water diversion irrigation, and west-east gas transmission. The disc hob is the main tool for rock breaking on the TBM, and its rock breaking efficiency and wear directly affect the progress and cost of underground construction. Therefore, it is necessary to carry out experimental research on the rock-breaking characteristics of TBM tools. [0003] Through the retrieval of relevant literature and materials at home and abroad, it ...

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Problems solved by technology

[0005] The above hob rock-breaking test benches at home and abroad are limited to the research on the static pressure cutting of rock by the hob, and cannot be studied on the rock-breaking impact of the hob; or the impact and rolling pressure can be applied at the same time, but because it relies on the motor and heavy objects to apply Mechanical impact, the order of magnitude and adjustable range of its force is small, so it cannot be used in the rock-breaking experiment of TBM disc-shaped hob impact-rolling compound rock breaking

These similar test benches cannot study the hob wear process

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