公开(公告)号：US3930567A

公开(公告)日：1976-01-06

申请号：US510302

申请日：1974-09-30

申请人： Robert L. Sims

发明人： Robert L. Sims

IPC分类号： B28C5/42 ,  B65G11/14 ,  B65G11/12

CPC分类号： B65G11/146 ,  B28C5/4251

摘要： A fluid motor actuator, including a hydraulic cylinder, includes a cam which is extended to become engagable with a cam follower of an extension chute section which is hinged and folded within a first chute section during transport. When the cam engages the follower of the retracted extension chute section, the cam causes the extension section to pivot out of its retracted position so that both chute sections form a unitary elongated chute adapted for receiving and directing the flow of concrete from the bowl of the mixer to the construction site. The extension chute section is retracted when the pour is completed and the cam is moved to non-interfering relation with the chute against the yieldable resistance of a spring.

摘要翻译： 包括液压缸的流体马达致动器包括凸轮，该凸轮延伸以与延伸滑槽部分的凸轮从动件接合，该滑动部分在运输期间在第一滑槽部分内铰接并折叠。 当凸轮与缩回延伸槽部分的从动件接合时，凸轮使延伸部分枢转出其缩回位置，使得两个滑槽部分形成一个整体的细长滑槽，其适于接收和引导混凝土的流动， 搅拌机到施工现场。 当倾倒完成时，延伸斜槽部分缩回，并且凸轮相对于弹簧的可屈服阻力移动到与滑槽不干涉的关系。