TW367388B - System for the automatic movement of the end pipe of an arm distributing fluid concrete mixes and air, in machines for lining tunnel vaults - Google Patents

System for the automatic movement of the end pipe of an arm distributing fluid concrete mixes and air, in machines for lining tunnel vaults

Info

Publication number
TW367388B
TW367388B TW087120114A TW87120114A TW367388B TW 367388 B TW367388 B TW 367388B TW 087120114 A TW087120114 A TW 087120114A TW 87120114 A TW87120114 A TW 87120114A TW 367388 B TW367388 B TW 367388B
Authority
TW
Taiwan
Prior art keywords
machines
air
end pipe
fluid concrete
automatic movement
Prior art date
Application number
TW087120114A
Other languages
Chinese (zh)
Inventor
Roberto Arpini
Giorgio Moretti
Original Assignee
Cifa Spa
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 Cifa Spa filed Critical Cifa Spa
Application granted granted Critical
Publication of TW367388B publication Critical patent/TW367388B/en

Links

Landscapes

  • Lining And Supports For Tunnels (AREA)

Abstract

System for performing automatic movement of the end pipe of the arm supplying fluid concrete mixes and air (shotcrete) in machines for lining tunnel vaults and the like, in which electrohydraulic actuators for the movements of the pipe are controlled by sending to them electrical commands in the form of square-wave signals with a variable frequency and in appropriate sequences, a signal being provided for each type of desired movement.
TW087120114A 1997-10-15 1998-12-03 System for the automatic movement of the end pipe of an arm distributing fluid concrete mixes and air, in machines for lining tunnel vaults TW367388B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT9702328 1997-10-15

Publications (1)

Publication Number Publication Date
TW367388B true TW367388B (en) 1999-08-21

Family

ID=57941209

Family Applications (1)

Application Number Title Priority Date Filing Date
TW087120114A TW367388B (en) 1997-10-15 1998-12-03 System for the automatic movement of the end pipe of an arm distributing fluid concrete mixes and air, in machines for lining tunnel vaults

Country Status (1)

Country Link
TW (1) TW367388B (en)

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