Experiment system and method for rock breaking efficiency analysis of TBM disc cutter
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A technology of rock-breaking efficiency and disc-shaped hob, which is applied in the testing of mechanical components, testing of machine/structural components, instruments, etc. Simulate the working process of the tool and other issues to achieve the effect of complete parameters and small size
Active Publication Date: 2017-02-08
CHONGQING UNIV
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[0003] In terms of TBM test research, the most representative early stage is the single-blade linear cutting test device (LCM) designed by Ozdemir et al. of the Colorado School of Mines. Do double-knife straight-line rock-breaking motion, and can measure hob three-way force, penetration, knife spacing and other parameters; but in actual engineering, the disc-shaped hob performs rotary cutting motion, and this device cannot break rock by turning , can not truly simulate the working process of the tool
The mini-hob rotary cutting test device (RIAT) designed by F.J.Macias of Trondheim Normal University in Norway, the device installs th...
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Embodiment 1
[0068] An experimental system for rock breaking efficiency analysis of a TBM disc hob, including a data acquisition box 1, a stator part, a rotor part, a monitoring system and a power system;
[0069] Stator part: including the upper rod 2 and the press;
[0070] The head of the press is connected to the top of the upper rod 2 for applying downward pressure to the upper rod 2;
[0071] As an optimization, the stator part also includes a wire slip ring 3 and a gasket 4;
[0072] The wire slip ring 3 is arranged in the upper rod 2;
[0073] The gasket 4 is arranged between the bottom of the upper rod 2 and the top of the connector, and the upper surface of the gasket 4 is fixedly connected to the bottom of the upper rod 2. During specific implementation, the two can be welded together to ensure Connection strength, the lower surface of the gasket 4 is fixedly connected with the connector;
[0074] The wire slip ring 3 is fixedly connected to the upper surface of the washer 4 ...
Embodiment 2
[0098] A method for analyzing the rock-breaking efficiency of a TBM disc-shaped hob adopts the experimental system for analyzing the rock-breaking efficiency of the TBM disc-shaped hob described in Embodiment 1, and the specific steps are as follows:
[0099] S1: Set a rock sample base 19 under the M-shaped cutter head 13, and fix the rock sample base 19 on the pressure table,
[0100] The rock sample is fixed on the rock sample base 19, and the height is adjusted by the rock sample base 19;
[0101] S2: Record the individual weighing of the scale hob 15 as m 1 ;The press starts to pressurize the upper rod 2 to stabilize the pressure at a certain value F;
[0102] S3: adjust the height of the motor 10, so that the large bevel gear 7 and the small bevel gear 8 are tightly meshed;
[0103] S4: Start the motor 10, use the governor 9 to stabilize the speed of the motor 10 at the value ω, transmit it through the bevel gear with a transmission ratio of 2:1, and the speed of the M-...
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Abstract
The invention relates to an experiment system and method for the rock breaking efficiency analysis of a TBM disc cutter, and the system comprises a data collection box which is used for recording the data collected by a sensor; a rotor part which comprises an upper rod piece and a press machine; a rotor part which comprises a central rod piece, an M-shape cutter disc, and a reduced scale hob, wherein the central rod piece is connected to the bottom of the upper rod piece through a connection part and rotates relative to the axis of the upper rod piece, two door openings of the M-shape cutter disc are respectively provided with an installation shaft, installed in a lateral direction, in a fixed manner, and the reduced scale hob is disposed on the installation shafts and can freely roll in the radial direction of the installation shafts; a monitoring system which comprises a rotating speed sensor for measuring the rotating speed of the reduced scale hob and a pressure sensor which is used for measuring the changes of pressure withstood by the installation shafts in a rotating cutting process; and a power system which supplies power to the M-shape cutter disc. The experiment system is smaller in size, and can be widely used on various types of press machines. According to the data recorded by the data collection box, the system can obtain the rock breaking efficiency through combining with an efficiency analysis method.
Description
technical field [0001] The invention relates to an experimental system and method for simulating rock breaking by a TBM disc-shaped hob, in particular to an experimental system and method for analyzing the rock-breaking efficiency of a TBM disc-shaped hob. Background technique [0002] Disc-shaped hobs are currently the most commonly used cutters on TBMs for hard rock tunnel boring machines. The study of the rock-breaking mechanism under the action of disc-shaped hobs is of great significance for improving rock-breaking efficiency and guiding the mechanical manufacture of cutters. Studying the hob's stress, wear, penetration depth and rock fracture zone development can greatly improve the rock breaking effect and tunneling speed. [0003] In terms of TBM test research, the most representative early stage is the single-blade linear cutting test device (LCM) designed by Ozdemir et al. of the Colorado School of Mines. Do double-knife straight-line rock-breaking motion, and can...
Claims
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Application Information
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