Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A cutter head, a full-face hard rock tunneling machine based on drilling and blasting construction, and a rock breaking method

A hard rock roadheader and roadheader technology, which is applied in earthwork drilling, mining equipment, tunnels, etc., can solve the problems of reduced construction efficiency, increased hob wear, and low safety, so as to improve tunneling efficiency and avoid overrunning Digging, the effect of improving safety

Active Publication Date: 2022-06-07
CHINA RAILWAY CONSTR HEAVY IND
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the increase of rock hardness, the wear of the hob will increase significantly, which will increase the frequency of tool change and construction cost, and greatly reduce the construction efficiency
Although the drilling and blasting method can efficiently break rocks, its working environment is poor and its safety is low, and there are over- and under-excavation phenomena during construction.
These two construction methods have their own advantages and disadvantages, and are poorly adaptable to complex formations

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A cutter head, a full-face hard rock tunneling machine based on drilling and blasting construction, and a rock breaking method
  • A cutter head, a full-face hard rock tunneling machine based on drilling and blasting construction, and a rock breaking method
  • A cutter head, a full-face hard rock tunneling machine based on drilling and blasting construction, and a rock breaking method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] Please refer to Figure 1 to Figure 5 , figure 1 It is a schematic structural diagram of a side view of a cutter head provided by an embodiment of the present invention;

[0040] figure 2 A schematic structural diagram of dividing 12 regions on a cutter head provided by an embodiment of the present invention; image 3 A ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a cutter head, a full-face hard rock tunneling machine based on drilling and blasting construction and a rock breaking method. The cutter head is divided into N areas, and a first inserting knife is arranged between two adjacent areas, and each The other boundary position of the area is provided with a second inserting knife, the impactor and the first arm frame connected with the impactor are arranged in the cutter head, and the first inserting knife or the second inserting knife of each area is provided with a gap for the impactor Extending and retracting, the boundary of each area is provided with a guide rail to form a circular guide rail for the impactor to move. A second arm frame is arranged inside the cutter head, and a slewing device is installed on the second arm frame. One side of the slewing device is provided with a Drill, the other side of which is provided with a filling device, and each area is provided with a drill for extending and retracting, and a rotary device for rotating after the drill is retracted so that the filling device is located at the side of the drill. Retracted position for extending and retracting through holes. It can combine the safety of the shield method and the high efficiency of the drill and blast method at the same time. Increase efficiency and increase safety.

Description

technical field [0001] The invention relates to the technical field of hard rock excavation, in particular to a cutter head, a full-section hard rock excavator based on drill-and-blast construction, and a rock breaking method. Background technique [0002] In the construction of underground projects, especially in the Sichuan-Tibet line project, hard rock tunnels account for a very high proportion. The construction methods of hard rock projects are currently mainly divided into shield method and drill and blast method. [0003] The rock breaking method of the existing hard rock boring machine is to apply normal stress to the rock through the hob. At this time, the rock is in a three-way compression state, and a very high extrusion force is required to make it crack and then break. With the increase of rock hardness, the wear of the hob will increase significantly, which will increase the frequency of tool change and construction cost, and greatly reduce the construction effi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/087E21D9/00
CPCE21D9/087E21D9/006
Inventor 刘飞香廖金军赵贵生甘士瑜易达云孔文田健张坚
Owner CHINA RAILWAY CONSTR HEAVY IND
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com