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    • 2. 发明授权
    • Self-advancing mine roof supports
    • 自我提升矿山屋顶支持
    • US3903703A
    • 1975-09-09
    • US46562274
    • 1974-04-30
    • BECORIT GRUBENAUSBAU GMBH
    • LUBOJATSKY WALTER
    • E21D23/00E21D23/03E21D11/16
    • E21D23/0043E21D23/003E21D23/03
    • A self-advancing mine roof support has a first or main roof supporting member and a second roof supporting member movable relatively to said first roof supporting member in the direction of advance of the support. The second roof supporting member has laterally extensible means on elements for abutting similar extensible means or elements or an adjacent support. The abutting means or elements serve to guide the supports during their advance and also prevent the caving of the roof between adjacent supports. Conveniently the second roof supporting member constitutes a connecting element for connecting a roof-engaging member, at the forward part of the second roof supporting member, to the first or main roof supporting member, the first or main roof supporting member having guiding and pivotal supporting means for the second roof supporting member or connecting element. Conveniently the second roof supporting member or connecting element is of shieldlike construction so that, in conjunction with a shield-like construction of the rear of the base of the support, it prevents mineral flushing into the support. The second supporting member or connecting element may be supported on a prop which is tiltable towards the mineral face so as to advance the second roof supporting member.
    • 3. 发明授权
    • Traction carriage for cable railway
    • 电缆轨道牵引运输
    • US3839968A
    • 1974-10-08
    • US36340573
    • 1973-05-24
    • BECORIT GRUBENAUSBAU GMBH
    • KOLK TWERTELEWSKI W
    • B61B9/00B61B10/02B61B13/04B66C9/04B66C9/10
    • B61B13/04
    • A traction carriage for a cable railway having a traction cable off-set from the centre line of the track has two track-engaging trolleys connected by a beam which extends longitudinally of the track. A boom projects laterally from the beam adjacent to one trolley and a traction arm is pivotally mounted on the boom for movement relative thereto about a vertical axis which extends through the traction cable. The traction arm is connected to the cable and is so linked with the adjacent trolley that the portion of cable to which the traction arm is connected is maintained parallel to the centre line of the track.
    • 用于具有从轨道的中心线偏离的牵引电缆的电缆铁路的牵引车架具有两个由轨道纵向延伸的梁连接的轨道接合手推车。 吊杆从邻近一个手推车的梁横向突出,并且牵引臂枢转地安装在起重臂上,用于相对于其围绕延伸穿过牵引缆索的垂直轴线移动。 牵引臂连接到电缆并与相邻的小车连接,牵引臂连接的电缆部分保持平行于轨道的中心线。
    • 4. 发明授权
    • Press assembly
    • 新闻组
    • US3654799A
    • 1972-04-11
    • US3654799D
    • 1970-02-20
    • BECORIT GRUBENAUSBAU GMBH
    • DISCHLER HELMUT
    • B30B1/23B21J9/12
    • B30B1/23
    • A sheet metal working or other press is operated say pneumatically. Movement of the press moves a freely rotatable screw relative to a freely rotating nut of a screw-and-nut mechanism so both spin in opposite directions storing energy which is released when the movement of the press is arrested during deformation of the workpiece. Either the screw or nut moves with the movable part of the press and the other is immovable in a casing. No rotary impact couples are transmitted to the frame of the machine when the press is arrested.
    • 钣金加工或其他压力机气动地操作。 压机的移动相对于螺旋螺母机构的自由旋转的螺母移动可自由旋转的螺钉,从而在相对方向上旋转,储存在工件变形期间当压机运动被阻止时被释放的能量。 螺丝或螺母与压机的可移动部分一起移动,另一个不可移动到外壳中。 当压机停止时,没有旋转碰撞传送到机器的框架。