Reduced scale type full-section rock tunneling test device based on multifunctional cutterhead

Abstract

The invention belongs to the technical field of engineering machinery, and discloses a reduced scale type full-section rock tunneling test device based on a multifunctional cutterhead, the device comprises a top seat and a base which are arranged up and down, and the base and the top seat are supported and connected through a stand column; a rock box is fixed on the base, and a to-be-tunneled test piece is arranged in the rock box; a pushing part is fixed on the top seat, a movable part of the pushing part is connected with a movable seat, and the movable seat moves up and down along with the movable part of the pushing part; and a driving part is arranged on the movable seat, a cutter head is connected to an output shaft of the driving part, and a disc-shaped hob is arranged on the cutter head. According to the full-section rock tunneling device with the reduced size, the scale-reduced disc type hobbing cutter is adopted, the outdoor tunneling process can be accurately simulated, the time-consuming and labor-consuming outdoor large rock tunneling test process is converted into the indoor test process, the test period can be greatly shortened, the test cost can be greatly reduced, and the engineering application potential is huge.

Description

Technical field [0001] The present invention belongs to the field of mechanical design, and more particularly to a multi-function-based full-sectional rock tunnel tunnel cartridge test device. Background technique [0002] Tunnel Boring Machine, TBM is the preferred equipment that digging long-distance rock tunnels, because it is safe and reliable, the environment is small, the labor intensity is low, the traction speed is excellent, widely used in underground traffic, water water Engineering and high-speed railways and other fields. The cutter cutter system is the core component of the digging machine. Its breaking effect directly affects the load, speed, efficiency, etc., and is closely related to the design of the tool cutter selection, service life, and construction costs. Because the actual construction environment is bad, the live experimental economy is large and the price is great and the risks should be taken, so they are generally studied to study the structure and digg...

AI Technical Summary

Problems solved by technology

[0003] The most representative of the existing TBM cutter head rock breaking test research is the hob linear cutting test device (LCM) designed by Ozdemir et al. [Ozdemir L.Performance predictions formechanical excavation in Yucca Mountain tuffs, EMI report , SAND91-7035], this device realizes the straight-line rock-breaking process of the hob through the vertical feeding of the single hob and the horizontal movement of the rock box. There is a difference between the cutting action and the rotary cutting action of the actual hob; 2) The test device generally presets a cutting depth and keeps the cutting depth constant during the cutting process, which is different from the continuous progressive cutting of the hob on the actual cutterhead

In response to these shortcomings, Hong Kairong and others proposed a test bench for rock-cutting with a rotary hob in the TBM rock-breaking test device with the patent number CN 102359919B. Horizontal rotation realizes the rotary cutting process of the hob. The device obtains the rotary torque of the cutter head by installing a torque speed sensor on the motor, and obtains the feed thrust of the cutter head by installing a pressure sensor on the hydraulic feed system. The disadvantages of this device The main point is: by separately controlling the movement of the cutter head and the rock box, the excavation and rock-breaking action of the cutter head cutter is realized, which is the same as that of the actual full-section rock tunnel boring machine cutter head through its own propulsion and rotation. There is a difference

[0004] Therefore, the existing test devices have deficiencies in terms of reliability of test results, economic cost, and ease of implementation.

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