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公开(公告)号：US4718793A
公开(公告)日：1988-01-12
申请号：US816754
申请日：1986-01-07
申请人： Waclaw Warachim , Wojciech Skoczynski , Jan Debiec , Hubert Niesyto , Marek Wojtaszczyk , Edward Wlodarczyk , Roman Krzewinski , Mieczyslaw Zielinski , Kazimierz Kowalczyk , Andrzej Spychala
发明人： Waclaw Warachim , Wojciech Skoczynski , Jan Debiec , Hubert Niesyto , Marek Wojtaszczyk , Edward Wlodarczyk , Roman Krzewinski , Mieczyslaw Zielinski , Kazimierz Kowalczyk , Andrzej Spychala
CPC分类号： G01N3/313 , E21D23/00 , G01M7/08 , G01N3/52 , G01N2203/0441
摘要： A generator for dynamic loading of a mine lining simulates an unstable ground structure, such as a "bump" of the formation roof by an explosion of an explosive. The generator /3/ comprises a cylinder /6/ with a piston /7/, the said piston functioning as a percussion member. The bottom of the cylinder /6/ is provided with symmetrical chambers /10/ to place an explosive. The explosive is batched to each of chambers /10/ through holes /8, 9/ made in the flank of the cylinder /6/. Holes /8, 9/ are bored at an angle enabling gravitational filling of the chamber /10/ with an explosive already after initial spragging of the lining section /1/ under test between the floor /2/ and the generator /3/ abutting the roof /5/ of the test-stand. The cylinder /6/ is closed with a limiter /12/ of the stroke of the piston. Between the piston /7/ and the limiter /12/ of its stroke there is a shock-absorbing washer /13/. In the limiter /12/ there are additional holes for release of powder gases.
摘要翻译： 用于动态装载矿山衬砌的发电机通过爆炸物爆炸模拟不稳定的地面结构，例如地层屋顶的“碰撞”。 发电机/ 3包括具有活塞/ 7 /的气缸/ 6，所述活塞用作冲击构件。 气缸/ 6 /底部设置有对称的腔室/ 10 /以放置爆炸物。 炸药被分批到每个腔室/ 10 /通孔/ 8,9 /制成在气缸/ 6 /的侧面。 孔/ 8,9以一定的角度钻孔，使得能够在地板/ 2 /发电机/ 3之间的衬里部分/ 1 /待测试的初始洼地之后的爆炸物已经具有爆炸物的腔室/ 10的重力填充 屋顶/ 5 /试验台。 气缸/ 6 /用活塞行程的限制器/ 12 /关闭。 在活塞/ 7 /和其行程的限制器/ 12 /之间有一个减震垫圈/ 13 /。 在限制器/ 12 /有额外的空气释放粉末气体。
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公开(公告)号：US4406565A
公开(公告)日：1983-09-27
申请号：US258703
申请日：1981-04-29
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）。
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公开(公告)号：US4382722A
公开(公告)日：1983-05-10
申请号：US230419
申请日：1981-02-02
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。
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