公开(公告)号：US4940363A

公开(公告)日：1990-07-10

申请号：US437803

申请日：1989-11-17

申请人： Stephen A. Brown ,  Neville J. H. Sleigh

发明人： Stephen A. Brown ,  Neville J. H. Sleigh

IPC分类号： E21D23/04

CPC分类号： E21D23/0436

摘要： A mine roof support assembly comprises a mine roof support having a first end adjacent to the mine face and a second end remote from the mine face, an advancing mechanism for advancing the roof support towards the mine face, and a base lifting mechanism. The base lifting mechanism includes two substantially parallel arm members pivotally connected to a base section of the mine roof support, and two lifting rams each of which acts between a respective arm member and the roof support. The lifting rams act on the roof support at a position which is nearer than the center of gravity of the roof support assembly to the second end of the roof support to pivot the roof support relative to a respective arm member and thereby lift the first end of the roof support clear of the ground. Also, an advancing ram of the advancing mechanism is connected to the arm members by an arrangement which provides some movement of the ram relative to the arm members in two mutually transverse directions.

摘要翻译： 矿山屋顶支撑组件包括：矿顶支撑件，其具有与矿井面相邻的第一端和远离矿面的第二端，用于将屋顶支撑件推向矿井面的前进机构和基座提升机构。 基座提升机构包括两个基本上平行的臂构件，其枢转地连接到矿井屋顶支撑件的基部部分，以及两个提升杆，每个起重杆作用在相应的臂构件和屋顶支撑件之间。 提升公羊在位于屋顶支撑组件的重心更靠近屋顶支撑件的第二端的位置处作用在屋顶支撑上，以使车顶支撑件相对于相应的臂构件枢转，从而提升车顶支撑件的第一端 屋顶支架远离地面。 此外，推进机构的推进冲头通过这样的装置连接到臂构件，该装置在两个相互横向方向上相对于臂构件提供一些移动。

公开(公告)号：US4609308A

公开(公告)日：1986-09-02

申请号：US626682

申请日：1984-07-02

申请人： Nigel Hill ,  Neville J. H. Sleigh

发明人： Nigel Hill ,  Neville J. H. Sleigh

IPC分类号： E21D23/00 ,  E21D23/06 ,  E21D15/44 ,  E21D17/054

CPC分类号： E21D23/0043 ,  E21D23/066

摘要： A roof support, suitable for use in mines, includes a roof-engageable canopy which comprises a main portion and an extension portion having a pivotal connection to the main portion. Actuator means is carried by the main portion. A wedge member, which is operable by the actuator means, is disposed between, and is engageable with, the main portion and a part of the extension portion projecting substantially beyond the said pivotal connection towards the actuator means. The wedge member is adapted arcuately to be movable by the actuator means and such arcuate movement effects tilting of the extension portion with respect to said main portion.

摘要翻译： 适用于矿山的车顶支撑件包括屋顶可接合的罩，其包括主体部分和具有与主要部分枢转连接的延伸部分。 执行器装置由主要部分承载。 可由致动器装置操作的楔形构件设置在主要部分和延伸部分的一部分之间并且可与其接合，该部分基本上超过所述枢转连接朝着致动器装置突出。 楔形构件弧形地适于通过致动器装置移动，并且这种弓形运动实现延伸部分相对于主要部分的倾斜。