TBM rock breaking test apparatus

Abstract

The TBM rock breaking test apparatus provided by the invention comprises a wheel box (6), a rock box (16), a cutterhead (4) and a worktable (8). The wheel box is provided with a motor (10), a torque speed sensor (7) and a decelerator (12); two ends of the torque speed sensor are connected with the motor and the decelerator respectively; the decelerator is connected with the cutterhead arranged onthe wheel box; a cutter (3) is arranged on the cutterhead; and the wheel box and the rock box are slidingly connected with the worktable. A rear distance rod (1) is connected to an external side of the rock box; a front distance rod (9) is connected to an external side of the wheel box; thrust mechanisms are symmetrically arranged on the worktable on two sides of the rock box and the wheel box; rear ends of the thrust mechanisms are connected with the rear distance rod, and front ends of the thrust mechanisms are connected with the front distance rod; the wheel box and the rock box are pushedto simultaneously carry out compressing or loosening movement on the worktable to realize tool feed and retracting. The apparatus can simulate real working process of the cutter to measure a plurality of key parameters of the cutter, such as cutting force, axial thrust, penetration and cutter space.

Description

technical field [0001] The invention belongs to the technical field of hard rock tunnel boring machines, and mainly relates to a TBM rock breaking test device. Background technique [0002] Disc hobs are currently the most commonly used cutting tools on TBMs for hard rock tunnel boring machines. The study of the rock breaking mechanism under the action of disc hobs is of great significance for improving rock breaking efficiency and guiding the mechanical manufacture of knives. Reasonably determining the layout of the cutter head, the distance between the cutters, and the thrust and torque of the machine tool can greatly improve the rock breaking effect and the tunneling speed. [0003] In terms of existing TBM test research, the most representative one is the single-knife linear cutting test device (LCM) designed by Ozdemir et al. [Ozdemir, L. Performance predictions for mechanical excavation in Yucca Mountain tuffs, EMI-report, SAND91 -7035], the test device is designed as...

AI Technical Summary

Problems solved by technology

The vertical test device can measure multiple parameters such as the hob's three-dimensional force, penetration, and cutter spacing. However, the device uses the linear displacement of the cutter to simulate the rock-breaking process of the cutter, which is different from the actual installation of the cutter on the rotary cutterhead. , there is a big difference in rock breaking through the rotary motion of the cutter head, so it is impossible to truly simulate the working process of the cutter, and it is impossible to obtain the relationship between the driving torque of the cutter head and the installation position of the cutter through tests, and it is impossible to conduct a comprehensive study on the cutter

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