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Cutterhead reduced scale test table of full face rock tunnel boring machine and design method

A design method and test bench technology, applied in the testing of mechanical components, testing of machine/structural components, measuring devices, etc., can solve problems such as large differences

Inactive Publication Date: 2015-01-14
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The problem to be solved by the present invention is to invent a designed full-section rock roadheader cutter head scale test bench for the defect that the design of the existing hard rock roadheader test bench is quite different from the working conditions of the actual hard rock roadheader. and design method

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  • Cutterhead reduced scale test table of full face rock tunnel boring machine and design method
  • Cutterhead reduced scale test table of full face rock tunnel boring machine and design method
  • Cutterhead reduced scale test table of full face rock tunnel boring machine and design method

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] The actual full-face rock boring machine cutter head is often very large in diameter, and it is neither economical nor possible to conduct experiments with real objects. Therefore, a reduced-scale model can be designed according to the present invention, and experiments can be carried out using the model under the premise of ensuring that the dynamic characteristics and external load of the cutterhead are similar to the real thing. Then the experimental results are inverted according to the proportional relationship of the physical quantities to obtain the corresponding result values ​​under the physical conditions. The design method of this full-section rock tunneling machine cutterhead scaled-scale test bench is to first obtain the proportional relationship between the actual tunneling machine cutterhead and the test bench cutterhead. The physi...

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Abstract

The invention provides a cutterhead reduced scale test table of a full face rock tunnel boring machine and a design method, and belongs to the technical field of full face rock tunnel boring machines. According to the method, the proportional relation of related physical quantities of an actual cutterhead of the full face rock tunnel boring machine and corresponding physical quantities of a test table cutterhead is obtained according to a geometric parameter, a structure feature and a load parameter of the actual cutterhead, the geometric parameter and the load parameter of the test table cutterhead are deducted, the structural feature of the test table cutterhead is determined, and design and model selection of test table components are achieved. The test table is of a three-dimensional structure and comprises a test table support, a main bearing assembly, a cutterhead rack, the cutterhead, a hydraulic actuator, a loading plate, a frequency-variable motor, a cutterhead cutter, a speed reductor, an acceleration sensor, a strain sensor, a micro force transducer and the like. The test table can simulate tunneling conditions of an the actual tunnel boring machine really, can test dynamic response and dynamic stress of the cutterhead, can test acceleration fatigue of the cutterhead with cracks, and improves accuracy of tests.

Description

technical field [0001] The invention belongs to the technical field of full-section rock excavation machines, and in particular relates to a full-section rock excavation machine cutter head scaling test bench and a design method. Background technique [0002] In recent years, more and more full-face rock boring machines have been used in the construction of tunnels in western development, water resource allocation projects and urban subway construction. These tunnels often have deep coverage, long distances, large diameters, and complex geological conditions. features. During the tunneling process of the full-face rock boring machine, the cutter head is one of the most important components of the full-face rock boring machine. It shoulders the functions of tunneling and excavation, supporting the face, and is the installation carrier for all rock-breaking tools. The load on the cutter head is a typical random load. Under the action of random load, the vibration of the cutte...

Claims

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Application Information

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IPC IPC(8): G01M13/00
Inventor 霍军周李广庆孙晓龙
Owner DALIAN UNIV OF TECH
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