发明名称 |
Boom extension and contraction mechanism for crane apparatus |
摘要 |
A boom extension and contraction mechanism (30) for a crane apparatus (20) includes: a flow passage switching mechanism (35b) that switches a flow passage of the hydraulic oil between the cylinder-to-boom connection switching cylinder (32b) side and the boom member connection switching cylinder (34b) side; a hose reel (35c) configured to reel out a hydraulic hose (35a) as a telescopic cylinder (31) is extending, and to reel off the hydraulic hose (35a) as the telescopic cylinder (31) is contracting; a cable (37) used to supply power and transmit a signal between a swivel base (21) and a boom (22); and a cord reel (37a) configured to reel out the cable (37) as the telescopic cylinder (31) is extending and to reel off the cable (37) as the telescopic cylinder (31) is contracting. The code reel (37a) and the hose reel (35c) are arranged on the base (21) in a direction in which the boom (22) extends and contracts. |
申请公布号 |
EP2842903(B1) |
申请公布日期 |
2016.08.17 |
申请号 |
EP20140181773 |
申请日期 |
2014.08.21 |
申请人 |
TADANO, LTD. |
发明人 |
MATSUDA, MASANORI;NAGAHAMA, KAZU |
分类号 |
B66C23/70 |
主分类号 |
B66C23/70 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|