Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
土砂分離用フィルタ装置及びトンネル掘削機
Document Type and Number:
Japanese Patent JP4091522
Kind Code:
B2
Abstract:

To reduce the cost of equipment or processing and at the same time, to enhance filter efficiency of excavated earth and sand in an earth and sand separation filter device and a tunnel excavator.

Pressure devices 30 and 31 are connected to a chamber 27 formed in an excavator body 11 through screw conveyers 28 and 29, filtration degrees of filtration filters 51, 53, 55, 57, 59 and 61 of the pressure devices 30 and 31 can be altered according to kinds of earth and sand, water pipes 48 and 49 returning water separated from excavated earth and sand to the chamber 27 are connected to the pressure devices 30 and 31 and, at the same time, earth-moving gates 40 and 41 discharging separated gravel are provided.

COPYRIGHT: (C)2005,JPO&NCIPI


Inventors:
Takashi Higashi
Masahiko Sugiyama
Shinji Masuzawa
Yoshikazu Kido
Kawagoe Masaru
Application Number:
JP2003361763A
Publication Date:
May 28, 2008
Filing Date:
October 22, 2003
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
Mitsubishi Heavy Industries Underground Construction Machinery Co., Ltd.
Kumagai Gumi Co., Ltd.
International Classes:
E02F7/00; E21D9/12; B01D29/01; E21D9/13
Domestic Patent References:
JP2003148087A
JP60003197Y2
JP10082274A
Attorney, Agent or Firm:
Toshiro Mitsuishi
Tadahiro Mitsuishi
Yasuyuki Tanaka
Hiroshi Matsumoto
Bunri Sugiura