TBM hob dynamic and static loaded-line cutting test bed

Abstract

The invention relates to a TBM hob dynamic and static loaded-line cutting test bed. The test bed comprises an upright post II, a movable cross beam I, a movable cross beam II, a vibration exciter, a transition connecting support, a hob mounting seat II, a movable cross beam fixing bolt, a vertical position adjusting and fastening device I and the like; the upper end of the transition connecting support is fixedly connected with the movable cross beam I, and a guide column at the lower end of the transition connecting support is connected with a guide hole at the upper end of a hob mounting seat II; the movable cross beam II is arranged between the transition connecting support and the hob mounting seat II, and both ends of the movable cross beam II pass through a rectangular guide groove in the upright post II and are fixedly connected with the movable cross beam fixing bolt; the vibration exciter is fixedly connected on the movable beam II, and an impact excitation component of the vibration exciter can be used for applying a vertical dynamic load to the hob mounting seat II; the vertical position adjusting and fastening device I is used for adjusting the position of the vibrationexciter relative to the hob mounting seat II; on the premise that the major structure and the layout form of the existing TBM standard line cutting test bed are unchanged, the hob loading device is improved so as to realize a single-knife rock breaking test under the condition of dynamic and static loading.

Description

technical field [0001] The invention belongs to the field of underground space engineering, and relates to a dynamic and static loading wire-cutting test bench for a rock-breaking tool, in particular to a standard wire-cutting test bench for the existing TBM (full-section hard rock tunneling machine) hob (disc hob) Based on the obtained TBM hob dynamic and static loading wire cutting test bench. Background technique [0002] In the 21st century, my country has entered an era of great development in engineering construction. TBM (full-face hard rock tunnel boring machine) has many advantages such as high efficiency, environmental protection, high degree of automation, strong geological adaptability, manpower saving, fast construction speed, one-time hole formation, no influence of climate, and control of ground subsidence during excavation. It has been widely used in a large number of key underground space engineering projects such as water conservancy, transportation, energ...

AI Technical Summary

Problems solved by technology

China Railway Tunnel Group Co., Ltd. invented a TBM rock-breaking test device (public number: CN 102359919B). This device can approximate the real working conditions of the cutting tool, but it cannot carry out the rock-breaking test of the hob under dynamic and static loading conditions.

Shenyang Heavy Machinery Group Co., Ltd. invented a multi-knife and multi-angle rock breaking device for rock boring machines (public number: CN102445336A). The deviation of the machining trajectory and other problems, and the hob rolling rock breaking test under dynamic and static loading conditions cannot be carried out

Beijing University of Technology and Guangzhou Xinou Machinery Co., Ltd. jointly invented a TBM hob rotary rock-breaking test platform and its supporting confining pressure device and rotary device (public number: CN 103226068B, CN 103226078B, CN 103226077B), The above-mentioned device can not only carry out the double-knife rotary rolling rock-breaking test, but also simulate the double-knife rolling rock-breaking test under the condition of one-way (or two-way) confining pressure, but it cannot carry out the hob rolling rock-breaking test under the condition of dynamic and static loading. test

[0007] In summary, although the above-mentioned new solution for the TBM hob rolling rock breaking test solves some functional defects of the existing TBM standard wire cutting test bench (for example, it can simulate the multi-knife rotary rock breaking process, and it can be researched under the drive of the servo hydraulic cylinder. Hob dynamic and static coupling new rock breaking method, similar hob wear test can be carried out, etc.), but because the structure is more complicated than the existing TBM standard wire cutting test bench, the test cost is high

At present, under the premise of keeping the main structure and layout of the existing TBM standard wire cutting test bench unchanged, there is no partial transformation and upgrading of a component (such as hob dynamic and static loading device) of the existing TBM standard wire cutting test bench , in order to realize the low-cost technical implementation of the new function of the single-blade rock breaking test under the condition of dynamic and static loading

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