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1. 发明授权

US4513799A Method of cutting substantially horizontal cantilevered objects such as logs, and apparatus for carrying out the method 失效
标题翻译：切割基本上水平的悬臂物体如木材的方法以及用于执行该方法的装置
公开(公告)号：US4513799A
公开(公告)日：1985-04-30
申请号：US502128
申请日：1983-06-08
申请人： Thore Lindblom , Jan-Erik Hedin , Sven Wickstrom
发明人： Thore Lindblom , Jan-Erik Hedin , Sven Wickstrom
IPC分类号： A01G23/00 , B27B1/00 , B27B17/00 , B27B17/06 , B27B13/00
CPC分类号： A01G23/00 , B27B1/002 , B27B17/0075 , B27B17/06 , Y10T83/04 , Y10T83/7114
摘要： Cutting horizontal, cantilevering objects of splittable material, such as de-barked tree trunks and the like is carried out with the aid of a guided, endless circulating saw chain (10), the upper cutting part of which is moved from below and upwards through the object. The lower edge portions of the cut surfaces at the cut are allowed to bear against each other under the action of the bending moment of the cantilevering object, while the return portion of the saw chain in the cutting area is kept free from the cut surfaces. The saw chain is guided by a chain guide (12) extending curvilinearly under the object and guides the return part of the chain. The chain guide and the guided return part are both outside and below the object during the whole of the cutting operation, while the upper cutting portion of the chain runs straight between the end points of the curved portion of the chain guide.Towards the end of the cutting operation, the part of the object not yet sawn through is subjected solely to short-duration tensional stress and substantially not to bending stress, whereby splitting the material is avoided.
摘要翻译：借助于被引导的环形循环锯链（10），其上切割部分从下方向上移动通过切割水平的悬垂物体，例如脱皮树干等进行切割物体。在切割部分的切割面的下边缘部分在悬臂物体的弯矩的作用下被允许彼此抵靠，同时切割区域中的锯链的返回部分保持没有切割表面。锯链由链条引导件（12）引导，链条引导件（12）在物体下方曲线地延伸并引导链条的返回部分。在整个切割操作期间，链条引导件和引导返回部件在物体的外侧和下方，而链条的上切割部分在链条引导件的弯曲部分的端点之间直线延伸。在切割操作结束时，还没有锯切的物体的部分仅受到短时间张力应力，并且基本上不会弯曲应力，从而避免了材料的分裂。

2. 发明授权

US4546805A Device for rotator and grapple unit suspended at a boom end 失效
标题翻译：旋转器和抓斗装置悬挂在吊杆端的装置
公开(公告)号：US4546805A
公开(公告)日：1985-10-15
申请号：US528965
申请日：1983-09-02
申请人： Lennart Jahr , Sven Wickstrom
发明人： Lennart Jahr , Sven Wickstrom
IPC分类号： B27B17/00 , B27B29/00 , B66C3/16 , A01G23/08
CPC分类号： B66C3/16 , B27B17/0058 , B27B29/00
摘要： The invention relates to a device at a rotator and grapple unit intended for tree handling and suspended at the end of a boom. The rotator (8) and grapple (11) are connected each to a pair of flexible operating lines (6,7 and, respectively, 9,10) from a hydraulic pump (1) via a control valve (3). For rendering possible completion of the unit with a hydraulic sawing device without adding two additional hydraulic hoses for this purpose, which would give rise to problems due to the combined bending and rotary movement at the crane tip and resulting heavily increased strains and wear on a bundle consisting of six hoses, according to the invention a branch line (13) is taken from the operating line (10) used for closing the grapple (11), which branch line is located in a place after the rotator (8). The branch line (13) extends to a hydraulic sawing device (15,16) via a pressure-sensing valve (14). This valve is opened when the operator after completed gripping function adjusts the hydraulic pump (1 ) to a higher pressure level in order thereby to drive the sawing device from the operating line (10). When the sawing is completed, the operator resets the pump to the original pressure level, and the return flow from the sawing device passes out through return lines (22,25) and the second operating line (9) of the grapple (11). The unit is thereby ready for a new setting, gripping and sawing operation.
摘要翻译：本发明涉及一种用于树木处理并悬挂在悬臂末端的旋转器和抓斗单元。旋转器（8）和抓斗（11）通过控制阀（3）从液压泵（1）分别连接到一对柔性操作管线（6,7和9,10）上。为了使用液压锯切装置可能完成单元，而不需要为此目的增加两个额外的液压软管，这将导致由于起重机尖端处的组合的弯曲和旋转运动引起的问题，并且导致束的大的应变和磨损由六条软管组成，根据本发明，从用于关闭抓斗（11）的操作线（10）中取出分支线（13），该分支线位于旋转器（8）之后的位置。分支管线（13）通过压力传感阀（14）延伸到液压锯切装置（15,16）。当操作者在完成夹紧功能之后，该阀打开，将液压泵（1）调节到更高的压力水平，从而从操作线（10）驱动锯切装置。当锯切完成时，操作者将泵复位到原始压力水平，并且来自锯切装置的返回流通过抓斗（11）的返回管线（22,25）和第二操作线（9）通过。因此，该设备可以进行新的设置，夹紧和锯切操作。

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