JP2546793Z - - Google Patents

Info

Publication number
JP2546793Z
JP2546793Z JP2546793Z JP 2546793 Z JP2546793 Z JP 2546793Z JP 2546793 Z JP2546793 Z JP 2546793Z
Authority
JP
Japan
Prior art keywords
cylinder
inner cylinder
outer cylinder
stage hydraulic
lowermost
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.)
Active
Application number
Other languages
English (en)
Japanese (ja)
Original Assignee
ユアサ工機株式会社
Publication date

Links

Family

ID=

Similar Documents

Publication Publication Date Title
CA2721540C (en) Split sub-basement drill rig
US8316588B2 (en) Rig for drilling or maintaining oil wells
KR100597531B1 (ko) 다단계 신축 실린더를 갖는 신축 시스템
CA2453400A1 (en) Method of expanding a tubular element in a wellbore
JPH01500609A (ja) 2段液圧テレスコープ形シリンダ
JP3741265B2 (ja) 伸縮ポール
JP2546793Z (enrdf_load_stackoverflow)
JP2546793Y2 (ja) 多段油圧シリンダ
US6430892B1 (en) Apparatus and method for building a domed structure
JP2671102B2 (ja) 伸縮ポール
JP3879977B2 (ja) 伸縮ポール
EP1270494A1 (en) Extension device for telescopic booms of hydraulic cranes
JP5794683B2 (ja) 多段伸縮シリンダ
JP6588775B2 (ja) ジャッキ装置及びジャッキ方法
JPH06508424A (ja) 多段液圧シリンダ
KR101848425B1 (ko) 다단 실린더
CN215950017U (zh) 一种升降油缸及使用其的升降路桩
KR100312727B1 (ko) 크레인 승강구동장치
KR20150051859A (ko) 다단식 승강장치 및 이를 이용한 이동식 무대장치
JP2002213409A (ja) 伸縮ポール
CN210087728U (zh) 伸缩缸和伸缩支架
JP3126657B2 (ja) ブーム伸縮装置
KR100292369B1 (ko) 차량용 리프트
KR100403088B1 (ko) 차량용 리프트
KR200234867Y1 (ko) 유압에 의한 다단 승강장치