公开(公告)号：US20010031212A1

公开(公告)日：2001-10-18

申请号：US09814313

申请日：2001-03-21

申请人： Schwing America, Inc.

发明人： Thomas M. Anderson ,  Enrique Gomez

IPC分类号： F04B011/00 ,  F01L015/00

CPC分类号： F04B49/00 ,  F04B9/1172 ,  F04B15/023 ,  F04B2201/0206 ,  F04B2203/09 ,  Y10S417/90

摘要： A pump having both a short stroke pumping mode and a long stroke pumping mode. The pump has two material cylinders, each with an attached hydraulic cylinder for operating a piston rod extending through both the material and hydraulic cylinders. The piston rods are driven by hydraulic fluid supplied to the hydraulic cylinders and are synchronized so that as one piston rod extends, the other piston rod retracts. The piston rods draw material into the material cylinders when retracting, and pump material out of the material cylinders when extending. To pump in a short stroke mode, a diverter valve is placed between the hydraulic pump and the hydraulic cylinders which diverts an amount of hydraulic fluid to the cylinders, causing the hydraulic pistons to only be extended about half the length of the hydraulic cylinder.

公开(公告)号：US20020117219A1

公开(公告)日：2002-08-29

申请号：US10043008

申请日：2002-01-09

申请人： Schwing America, Inc.

发明人： Thomas M. Anderson ,  Lawrence P. Schmidt ,  David R. Bissen ,  Brian E. Spencer ,  Leo B. Willner

IPC分类号： F17D001/00

CPC分类号： B66C23/64 ,  E04G21/04 ,  E04G21/0436 ,  F16L3/015 ,  Y10T137/8807

摘要： The invention is a placing boom comprising a plurality of boom sections connected together in an articulated arrangement. A pipeline is carried by the boom sections, wherein the pipeline is disposed inside at least one of the boom sections.

摘要翻译： 本发明是一种放置吊杆，其包括以铰接装置连接在一起的多个吊杆段。 管道由吊杆部分承载，其中管道设置在至少一个悬臂段内。