JPS5789035A - Dredging cutter - Google Patents

Dredging cutter

Info

Publication number
JPS5789035A
JPS5789035A JP16537080A JP16537080A JPS5789035A JP S5789035 A JPS5789035 A JP S5789035A JP 16537080 A JP16537080 A JP 16537080A JP 16537080 A JP16537080 A JP 16537080A JP S5789035 A JPS5789035 A JP S5789035A
Authority
JP
Japan
Prior art keywords
cutter
mud
excavated
dredging
suction pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP16537080A
Other languages
Japanese (ja)
Other versions
JPS6224581B2 (en
Inventor
Eizo Inoue
Haruo Takahashi
Kazuyoshi Ohira
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP16537080A priority Critical patent/JPS5789035A/en
Publication of JPS5789035A publication Critical patent/JPS5789035A/en
Publication of JPS6224581B2 publication Critical patent/JPS6224581B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To enable to increase a ratio of a length to a diameter and to improve a mud feed efficiency and a dredging work efficiency, by a method wherein two dredging cutters of an upper and a lower cutter are combined in two stage such that their twisting directions are in a revers direction to that of the opposite.
CONSTITUTION: An upper cutter 1 and a lower cutter 2 are connected into a monolithical cutter at a connection 3, an opening end 4a of a mud suction pipe 4, inserted into the cutter, is mounted in the proximity of the connection 3, and the upper and lower cutters 1 and 2 are rotatably installed at the mud suction pipe 4. The cutter twistings are formed in a reverse direction to that of the opposite, whereby mud, excavated by the upper cutter 1, is pushed downward through the rotation of the cutter 1, and mud, excavated by the lower cutter 2, is pushed upward through the turning of the cutter 2. This permits the smooth operation of the cutter even if a ratio L/D of the length L to the diameter D of the cutter 1 is set to 1.2 or more.
COPYRIGHT: (C)1982,JPO&Japio
JP16537080A 1980-11-26 1980-11-26 Dredging cutter Granted JPS5789035A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16537080A JPS5789035A (en) 1980-11-26 1980-11-26 Dredging cutter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16537080A JPS5789035A (en) 1980-11-26 1980-11-26 Dredging cutter

Publications (2)

Publication Number Publication Date
JPS5789035A true JPS5789035A (en) 1982-06-03
JPS6224581B2 JPS6224581B2 (en) 1987-05-29

Family

ID=15811075

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16537080A Granted JPS5789035A (en) 1980-11-26 1980-11-26 Dredging cutter

Country Status (1)

Country Link
JP (1) JPS5789035A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5617654A (en) * 1994-10-28 1997-04-08 Wetta, Ii; William J. Dredge rotary cutter head

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4211625Y1 (en) * 1964-09-19 1967-06-29
JPS5034504U (en) * 1973-08-03 1975-04-12

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4211625Y1 (en) * 1964-09-19 1967-06-29
JPS5034504U (en) * 1973-08-03 1975-04-12

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5617654A (en) * 1994-10-28 1997-04-08 Wetta, Ii; William J. Dredge rotary cutter head

Also Published As

Publication number Publication date
JPS6224581B2 (en) 1987-05-29

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