Central fishtail cutter

A fishtail knife and cutter body technology, which is used in mining equipment, earthwork drilling, tunnels, etc., can solve problems such as mud cake formation in the center of the central fishtail knife of the shield machine that cannot be fundamentally solved, so as to improve the neutrality, The effect of increasing the injection range and high coaxiality

Active Publication Date: 2016-03-02
WUHAN MARINE MACHINERY PLANT
View PDF5 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the existing technology cannot fundamentally solve the central mud cake of the

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
  • Central fishtail cutter
  • Central fishtail cutter
  • Central fishtail cutter

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example

[0026] The embodiment of the present invention provides a center fishtail knife, such as figure 1 , figure 2 with image 3 As shown, the center fishtail knife includes a knife holder 1 mounted on the cutter head of the shield machine (not shown), a first knife body 2 mounted on the knife holder 1 (see Figure 4 ) And an additive injection block 4 provided with a plurality of injection holes 3, an additive injection block mounting hole 5 is opened on the knife seat 1, and a first receiving groove 2a is opened on the first knife body 2 at a position corresponding to the additive injection block 4, The center fishtail knife also includes two second knife bodies 6. The two second knife bodies 6 are respectively symmetrically arranged on both sides of the first knife body 2 and are vertically fixed on the first knife body 2. The bottom of the body 6 is fixed on the knife holder 1, and each second knife body 6 is provided with a second containing groove 6a at a positio...

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 central fishtail cutter and belongs to the field of parts of shield tunneling machines. The central fishtail cutter comprises a cutter holder, a first cutter body, an additive injection block and two second cutter bodies, wherein the two second cutter bodies are respectively and symmetrically arranged on two sides of the first cutter body and are vertically fixed on the first cutter body; the bottoms of the two second cutter bodies are fixed on the cutter holder; a second accommodation groove is formed in a position, corresponding to the additive injection block, of each second cutter body; the additive injection block is located in an accommodation cavity and is mounted in an additive injection block mounting hole; injection channels are formed in the first cutter body and the two second cutter bodies; a plurality of injection holes are formed in the position, corresponding to the accommodation cavity, of the additive injection block; the lower injection holes are connected with the injection channels through connection tubes. Through the central fishtail cutter, the injection channels of the first cutter body and the second cutter bodies are capable of guiding additives in the additive injection block to outlets of the injection channels through the connection tubes, so that the injection range of the additives can be broadened; the problem of formation of mud cakes can be effectively avoided.

Description

technical field [0001] The invention relates to the field of shield machine accessories, in particular to a central fishtail knife. Background technique [0002] The shield machine is a special construction machine for tunneling. The center fishtail knife of the existing shield machine includes a cutter body and a cutter seat. The cutter body is plate-shaped and the top is pointed. Drive the center fishtail knife to rotate. Because the center fishtail knife cuts the soil in a rotating manner, it is easy to form mud cake near the rotation center of the central fishtail knife. The formed mud cake will affect the tunneling speed of the shield machine, seriously It will cause excessive wear of the cutter head, which will reduce the safety of the shield machine. In order to prevent the problem of mud cake near the rotation center of the center fishtail knife, technicians open a through hole on the knife body, set an additive injection block in the through hole, and fix the addi...

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
IPC IPC(8): E21D9/08
Inventor 陈离刘发展陈云节杨阳刘郴朱晓冬王正程旎郭振强盛文
Owner WUHAN MARINE MACHINERY PLANT
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap