公开(公告)号：US4190295A

公开(公告)日：1980-02-26

申请号：US857455

申请日：1977-12-05

申请人： Gordon E. Boast

发明人： Gordon E. Boast

IPC分类号： E21C27/20 ,  E21C25/56

CPC分类号： E21C27/20

摘要： A mineral mining machine suitable for working shortwall faces is provided with a pivotted cutter member including a guideway for a cutter chain carrying picks and paddle devices for scooping debris. The guideway is divided at or about its mid point into two parts which are interconnected by guide means and actuating rams. The guide means are in the form of bars slidably engaged by runners attached to the guideway. Operation of the actuating means can effect tensioning of the cutter chain. The base of the machine has two interchangeable sections facilitating a change of hand when this is desired, the disposition of the chain tensioning arrangement in the middle of the guideway being of advantage in this connection.

摘要翻译： 适用于工作的短壁面的矿物挖掘机设置有枢转的刀具构件，该枢转刀具构件包括用于切割链的导轨，该切割链承载用于舀取碎屑的拾取和桨装置。 导轨在其中点处或其中点处分成两部分，其通过引导装置和致动公柱相互连接。 导向装置是与连接在导轨上的滑道滑动接合的杆形式。 致动装置的操作可以实现切割链的张紧。 当需要时，机器的基座具有两个可互换的部分，便于换手，在该连接中，链条张紧装置位于导轨中间的优点是有利的。