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

Hard rock cutterhead of multi-angle rock breaking cantilever heading machine

A cantilever roadheader and multi-angle technology, applied in mining equipment, earthwork drilling, tunnels, etc., can solve problems such as abnormal wear and chipping of hobs, and achieve the goal of ensuring construction progress, service life, and design rationality Effect

Active Publication Date: 2020-06-09
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
View PDF8 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a hard rock cutterhead of a multi-angle rock-breaking cantilever roadheader, which solves the technical problems of abnormal wear and chipping of the hob of the existing cantilever roadheader

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
  • Hard rock cutterhead of multi-angle rock breaking cantilever heading machine
  • Hard rock cutterhead of multi-angle rock breaking cantilever heading machine
  • Hard rock cutterhead of multi-angle rock breaking cantilever heading machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1, a kind of hard rock cutterhead of multi-angle rock-breaking cantilever roadheader, such as Image 6As shown, it includes a cutting arm 14 and a cutterhead front panel 2 connected to the cutting arm 14. The front end of the cutterhead front panel 2 is provided with a front hob 11 and a side hob 16, and the cutting arm 14 can drive the cutterhead. Front panel 2 follows. As the cutting arm 14 moves forward, the front hob 11 on the front panel 2 of the cutter head cuts into the hard rock in a forward direction; The side hob 16 performs lateral cutting on hard rock.

[0040] Such as figure 2 with image 3 As shown, a main beam 8 and a sub-beam 9 are arranged on the front panel 1 of the cutter head, hob welding seats 10 are arranged inside the main beam 8 and the sub-beam 9, and the front hob 11 is arranged in the main beam 8 The hob welding seat 10 of the side beam 16 and the inflection point hob 13 are arranged in the hob welding seat 10 of the sub-beam 9...

Embodiment 2

[0046] Embodiment 2, a hard rock cutterhead of a multi-angle rock-breaking cantilever roadheader, such as Figure 5 As shown, the cutter ring of the inflection point hob 13 is the first eccentric cutter ring 131, and the outermost blade of the first eccentric cutter ring 131 exceeds the outer edge of the outer end cover of the inflection point hob 13, which can effectively prevent the cutter head from cutting forward During the rock mass or when the cutterhead cuts the rock mass laterally, the rock mass wears the outer end cover of the inflection point hob 13 .

[0047] Further, the cutter ring of the inflection point hob 13 is a large-diameter cutter ring, and the height of the leading edge of the large-diameter cutter ring exceeds the highest point of the inner end cover of the inflection point hob 13, which can effectively prevent the cutter head from cutting into the rock mass in a forward direction. When or when the cutter head cuts the rock mass laterally, the rock mass ...

Embodiment 3

[0050] Embodiment 3, a hard rock cutter head of a multi-angle rock-breaking cantilever roadheader, a lateral transition hob 12 is arranged between the inflection point hob 13 and the front hob 11, and the front end of the lateral transition hob 12 is The distance between the blade and the hinge point of the cutting arm 14 is greater than R 1 , to further ensure that when the cutter head cuts the rock mass laterally, the lateral transition hob 12 and the inflection point hob work together to protect the front hob 11 from lateral force when cutting the lateral rock mass, preventing During cutting, the front hob 11 is abnormally worn and broken.

[0051] Further, the cutter ring of the lateral transition hob 12 is a second eccentric cutter ring, and the outermost edge of the second eccentric cutter ring exceeds the outer edge of the outer end cover of the lateral transition hob 12, which can effectively prevent the cutter head from When cutting into the rock mass or when the cut...

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 hard rock cutterhead of a multi-angle rock breaking cantilever heading machine. The technical problem that an existing rolling cutter of a cantilever heading machine has abnormal abrasion and cutter disintegrating is solved. The hard rock cutterhead includes a cutting arm and a cutterhead front panel connected to the cutting arm, the front end of the cutterhead front panel is provided with a front hob and a side hob, an inflection point hob is arranged between the included angles of the front hob and the side hob, the distance between the front-most blade edge of theinflection point hob and a hinge point of the cutting arm is denoted as the swing radius R2, the distance between the front end cutting edge of the front hob and the hinge point of the cutting arm isdenoted as the swing radius R1, and the R2 is greater than R1. The hard rock cutterhead not only can avoid the occurrence of abnormal damage of the front hob, but also prevent abrasion of the end cover of the hob, improve the hard rock excavation efficiency of the cantilever heading machine, and realize the low cost, flexible maneuverability and high efficiency of the tunnel excavation equipment.

Description

technical field [0001] The invention belongs to the technical field of roadheader cutterheads, in particular to a hard rock cutterhead of a multi-angle rock-breaking cantilever roadheader. Background technique [0002] With the active advancement of national water conservancy and hydropower projects, subway tunnel projects, and underground space development projects, as well as the gradual maturity of roadheader R&D and manufacturing capabilities and construction technologies, the market is concerned about the safety, work efficiency, and economy of tunnel excavation equipment. The flexible adaptability of the cross-sectional shape puts forward new and higher requirements. [0003] At present, in hard rock formation projects, TBM full-face hard rock roadheaders are mostly used for construction. They are mainly used in the excavation of circular cross-section tunnels. The adaptability to the shape of the tunnel section is relatively single and limited, and the equipment cost ...

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 Applications(China)
IPC IPC(8): E21D9/10
CPCE21D9/1006
Inventor 李建斌贾连辉张家年黄士广兰磊李英发张世伟叶蕾朱英
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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