发明申请
- 专利标题: Hydraulic circuits for tree-harvesting knuckle booms
- 专利标题(中): 用于采伐转向节臂的液压回路
-
申请号: US10199862申请日: 2002-07-19
-
公开(公告)号: US20040011427A1公开(公告)日: 2004-01-22
- 发明人: William Pierre Liu
- 主分类号: A01G023/08
- IPC分类号: A01G023/08 ; B27B001/00 ; B23Q015/00 ; B23Q016/00
摘要:
A hydraulic valve is used to judiciously shunt oil from lowering ends of the hoist and stick cylinders that have been plumbed to achieve near horizontal movement. This allows the use of cylinders that have unequal rod/bore ratios or to compensate for certain transient effects that may require the exchange of oil to the reservoir. The action of the hydraulic valve acts without obtrusive operator intervention and is essentially automatic. This allows for greater flexibility in the design of the boom system, allows the boom system to perform various tasks, while not requiring obtrusive intervention from the operator.
公开/授权文献
- US06763863B2 Hydraulic circuits for tree-harvesting knuckle booms 公开/授权日:2004-07-20
信息查询