Slidable filling dam
    2.
    发明授权
    Slidable filling dam 失效
    可滑动灌水坝

    公开(公告)号:US4406565A

    公开(公告)日:1983-09-27

    申请号:US258703

    申请日:1981-04-29

    IPC分类号: E21D23/04 E21F15/02 E02D15/00

    CPC分类号: E21D23/0481 E21F15/02

    摘要: A slidable filling dam has along the heading dam segments (4) articulated in a hinged roof-bar (7) of a mine lining. The slidable dam has near-floor beams (1) which are provided at their ends with terminal eyes (2) to connect two neighboring dam segments (4) at the point of their connection with footings (9) by means of bolts (10, 11). The near-floor beam (1) has in its central part at least one central eye (5) to fix a hydraulic ram (6) pulling up segments (4) of the filling dam.

    摘要翻译: 一个可滑动的填充坝沿着矿井衬里的铰接屋顶栏(7)铰接的水坝段(4)。 可滑动的坝具有近地板梁(1),它们的端部设置有端眼(2),以通过螺栓(10,10)连接两个相邻的坝段(4),在它们与地脚(9) 11)。 近地板梁(1)在其中心部分具有至少一个中心眼(5),以固定拉出填充坝的段(4)的液压柱塞(6)。

    Nine lining structure
    3.
    发明授权
    Nine lining structure 失效
    九层结构

    公开(公告)号:US4382722A

    公开(公告)日:1983-05-10

    申请号:US230419

    申请日:1981-02-02

    IPC分类号: E21D23/00 E21D23/04 E21D15/44

    CPC分类号: E21D23/0034 E21D23/04

    摘要: The roof support according to the invention is between the roof-bar (2) and the sill piece (1) with at least one system of levers (3,4) connected by articulation with each other and connected by articulation with the roof-bar (2) and the sill piece (1) so that they have the form of a lying letter V directed with its vertex towards the fall. Between the levers (3,4) it is provided with the hydraulic cylinder (5) spragging the levers (3,4) and thus the lining. That admits to achieve a high multiplication of the cylinder travel in relation to the change of the lining height, and a multiplication of forces. In shield roof supports of a lemniscate type the lever system can consist of the fall shield (6) and the outside arm (7) of the lemniscate arrangement.

    摘要翻译: 根据本发明的屋顶支撑件位于屋顶杆(2)和门槛件(1)之间,其中至少一个杠杆系统(3,4)通过铰接连接并通过与顶杆 (2)和门槛片(1),使得它们具有以其顶点朝着秋天指向的言辞V的形式。 在杠杆(3,4)之间,设置有液压缸(5),其突出了杠杆(3,4),从而衬套。 这承认相对于衬里高度的变化实现气缸行程的高倍数和力的乘积。 在遮蔽式屋顶支撑件中,杠杆系统可由防盗罩(6)和收割装置的外臂(7)组成。