JPS58207483A - 竪孔掘削機用深度検出装置 - Google Patents

竪孔掘削機用深度検出装置

Info

Publication number
JPS58207483A
JPS58207483A JP57088788A JP8878882A JPS58207483A JP S58207483 A JPS58207483 A JP S58207483A JP 57088788 A JP57088788 A JP 57088788A JP 8878882 A JP8878882 A JP 8878882A JP S58207483 A JPS58207483 A JP S58207483A
Authority
JP
Japan
Prior art keywords
depth
sheave
wire rope
switch
permanent magnets
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
JP57088788A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6329077B2 (enrdf_load_stackoverflow
Inventor
久住　宏
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.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co Ltd
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 Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP57088788A priority Critical patent/JPS58207483A/ja
Publication of JPS58207483A publication Critical patent/JPS58207483A/ja
Publication of JPS6329077B2 publication Critical patent/JPS6329077B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
  • Machine Tool Sensing Apparatuses (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
JP57088788A 1982-05-27 1982-05-27 竪孔掘削機用深度検出装置 Granted JPS58207483A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57088788A JPS58207483A (ja) 1982-05-27 1982-05-27 竪孔掘削機用深度検出装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57088788A JPS58207483A (ja) 1982-05-27 1982-05-27 竪孔掘削機用深度検出装置

Publications (2)

Publication Number Publication Date
JPS58207483A true JPS58207483A (ja) 1983-12-02
JPS6329077B2 JPS6329077B2 (enrdf_load_stackoverflow) 1988-06-10

Family

ID=13952573

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57088788A Granted JPS58207483A (ja) 1982-05-27 1982-05-27 竪孔掘削機用深度検出装置

Country Status (1)

Country Link
JP (1) JPS58207483A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS6329077B2 (enrdf_load_stackoverflow) 1988-06-10

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