JPS55132824A - Fitting device for depth-watching mirror in shovel-system excavator - Google Patents

Fitting device for depth-watching mirror in shovel-system excavator

Info

Publication number
JPS55132824A
JPS55132824A JP3894579A JP3894579A JPS55132824A JP S55132824 A JPS55132824 A JP S55132824A JP 3894579 A JP3894579 A JP 3894579A JP 3894579 A JP3894579 A JP 3894579A JP S55132824 A JPS55132824 A JP S55132824A
Authority
JP
Japan
Prior art keywords
depth
watching
long arm
mirror
watching mirror
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.)
Pending
Application number
JP3894579A
Other languages
Japanese (ja)
Inventor
Ryutaro Yoritomi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP3894579A priority Critical patent/JPS55132824A/en
Publication of JPS55132824A publication Critical patent/JPS55132824A/en
Pending legal-status Critical Current

Links

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  • Jib Cranes (AREA)

Abstract

PURPOSE: To enable the watching of the depth in a shaft by a watching mirror at all times in spite of the boom as well as the large swinging of a long arm, in the case when an operation is performed in the depth with the long arm positioned perpendicularity or at a given angle close to perpendicularity.
CONSTITUTION: To a long arm 4 is fitted a guiding member 22 equipped with a rail extending in parallel with the central line in the longuish direction of the long arm 4 and being capable of guiding a fitting frame 16 for depth-watching mirror, maintaining the same at a fixed angle, while to the above fitting frame 16 being fixed the depth-watching mirror 15 at the desired angle. When the long arm 4 moves in the perpendicular direction or in the direction at a fixed angle near the perpeddicularity, the depth-watching mirror 5 is moved in the inverse direction at the same moving distance as that of the arm and thus the depth-watching mirror 15 is kept standing in the previous position in spite of the move of the long arm and in addition, is retained at a fixed angle, thereby the watching in the shaft is facilitated.
COPYRIGHT: (C)1980,JPO&Japio
JP3894579A 1979-03-31 1979-03-31 Fitting device for depth-watching mirror in shovel-system excavator Pending JPS55132824A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3894579A JPS55132824A (en) 1979-03-31 1979-03-31 Fitting device for depth-watching mirror in shovel-system excavator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3894579A JPS55132824A (en) 1979-03-31 1979-03-31 Fitting device for depth-watching mirror in shovel-system excavator

Publications (1)

Publication Number Publication Date
JPS55132824A true JPS55132824A (en) 1980-10-16

Family

ID=12539345

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3894579A Pending JPS55132824A (en) 1979-03-31 1979-03-31 Fitting device for depth-watching mirror in shovel-system excavator

Country Status (1)

Country Link
JP (1) JPS55132824A (en)

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