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1. 发明授权

US4944355A Caster wheel control apparatus 失效
标题翻译：脚轮控制装置
公开(公告)号：US4944355A
公开(公告)日：1990-07-31
申请号：US375355
申请日：1989-07-03
申请人： John Karchewski
发明人： John Karchewski
IPC分类号： A01M7/00
CPC分类号： A01M7/0082 , A01M7/0075
摘要： In general, the remote control of a caster wheel assembly on a farm implement such as a crop sprayer of the type including a boom rotatable between a transport position and a field position is a complicated operation. In the transport position, the wheel assembly should be fixed, i.e. non-castering and in the field position the wheel assembly should caster freely. A relatively simple apparatus for effecting caster wheel assembly control includes a frame mounted on the boom, a hydraulic cylinder on the frame, and a linkage connected to the piston rod of the cylinder and releasably connected to an arm on the shaft carrying the wheel assembly, whereby initial extension of the piston rod moves the wheel assembly to a turning position, full piston rod extension causes release and thus free castering of the wheel assembly in the field position, and retraction of the piston rod causes re-engagement of the wheel assembly by the linkage to lock the wheel assembly in the transport position. In the turning position, the wheel is at an acute angle with respect to the longitudinal axis of the boom. With such an arrangement the boom can be moved into the field position by moving the implement a relatively short distance of 100 feet, instead of the 200-300 yards normally required.
摘要翻译：一般来说，在诸如包括在运输位置和运行位置之间可转动的起重臂类型的作物式喷雾器的农场装置上的脚轮组件的远程控制是复杂的操作。在运输位置，车轮组件应该是固定的，即非脚轮，并且在现场位置，车轮组件应该是自由的。用于实现脚轮组件控制的相对简单的装置包括安装在起重臂上的框架，框架上的液压缸，以及连接到缸的活塞杆的连杆，并且可释放地连接到承载车轮组件的轴上的臂上，由此活塞杆的初始延伸将车轮组件移动到转动位置，完全活塞杆延伸件引起释放并因此使轮组件在现场位置自由地转动，并且活塞杆的缩回引起车轮组件的再接合连杆将车轮组件锁定在运输位置。在转动位置，车轮相对于起重臂的纵向轴线成锐角。通过这样的布置，通过将工具移动到100英尺的相对较短的距离而不是通常需要的200-300码，可以将吊杆移动到野外位置。

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