Method for designing rock breaking cutterhead combined by flexible expanding excavation hobbing cutters and water jets

Abstract

The invention relates to a method for designing a rock breaking cutterhead combined by flexible expanding excavation hobbing cutters and water jets, and belongs to the field of design methods of full-fracture-surface-rock heading machine cutterhead structures. According to the design method, flexible multi-edge expanding excavation hobbing cutter assemblies and high-pressure water jet devices are combined to replace a side hobbing cutter of an original cutterhead to break rock, the side hobbing cutter is removed from the edge position of the original cutterhead, the first flexible multi-edge expanding excavation hobbing cutter assembly, the second flexible multi-edge expanding excavation hobbing cutter assembly and the third flexible multi-edge expanding excavation hobbing cutter assembly are installed, and the flexible multi-edge expanding excavation hobbing cutter assemblies are composed of flexible multi-edge expanding excavation hobbing cutters installed in a flexible multi-edge expanding excavation hobbing cutter protruding-out device, and the flexible multi-edge expanding excavation hobbing cutter assemblies are same in structure. On the cutterhead, the high-pressure water jet devices are installed on the two sides of the first flexible multi-edge expanding excavation hobbing cutter assembly, the two sides of the second flexible multi-edge expanding excavation hobbing cutter assembly and the two sides of the third flexible multi-edge expanding excavation hobbing cutter assembly respectively. The rock breaking cutterhead combined by the flexible expanding excavation hobbing cutters and the water jets is small in vibration, and therefore tunneling service life of the cutterhead is prolonged, noise is reduced, and economic losses in engineering are reduced.

Description

Technical field: [0001] The invention belongs to the field of design method of cutter head structure of roadheader, in particular to a design method of rock-breaking cutter head combined with telescopic expanding excavation hob and water jet. Background technique: [0002] As one of the most important components of the full-face rock boring machine, the cutter head is the installation carrier for all rock breaking tools. In actual engineering, the full-face rock boring machine is mostly caused by the lateral force of the side hob. If the cutter head vibrates too much, it will not only affect its service life, but also affect its performance. Therefore, the reasonable design of the structure at the hob side of the cutterhead has a great influence on the vibration of the cutterhead. Chinese patent number: CN201110435177.0, the patent name is "a multi-stage separation progressive shield cutter head", the inventors Wei Zhengying, Lu Bingheng and others disclosed a multi-stage s...

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Problems solved by technology

[0003] The problem to be solved by the present invention Aiming at the defects of the existing cutter head, a design method for the rock-breaking cutter head combined with telescopic expansion and excavation hob and water jet is invented

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