JPS6138999Y2 - - Google Patents

Info

Publication number

JPS6138999Y2

JPS6138999Y2 JP16866680U JP16866680U JPS6138999Y2 JP S6138999 Y2 JPS6138999 Y2 JP S6138999Y2 JP 16866680 U JP16866680 U JP 16866680U JP 16866680 U JP16866680 U JP 16866680U JP S6138999 Y2 JPS6138999 Y2 JP S6138999Y2

Authority

JP

Japan

Prior art keywords

rollers

vertical

frame member

rider

hydraulic grab

Prior art date

1980-11-25

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.)

Expired

Links

• Espacenet
• Global Dossier
• Discuss

• 229910000831 Steel Inorganic materials 0.000 claims description 41
• 239000010959 steel Substances 0.000 claims description 41
• 239000004576 sand Substances 0.000 claims description 19
• 238000000034 method Methods 0.000 description 12
• 239000000463 material Substances 0.000 description 6
• 238000010586 diagram Methods 0.000 description 5
• 239000002689 soil Substances 0.000 description 4
• 239000013049 sediment Substances 0.000 description 2
• 238000009412 basement excavation Methods 0.000 description 1
• 238000010276 construction Methods 0.000 description 1
• 238000007796 conventional method Methods 0.000 description 1
• 230000000694 effects Effects 0.000 description 1
• 238000000605 extraction Methods 0.000 description 1
• 230000000116 mitigating effect Effects 0.000 description 1
• 238000005070 sampling Methods 0.000 description 1
• 238000003466 welding Methods 0.000 description 1