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23 条记录 (耗时 0.013 秒)

    Enclosures for electrical switchgear
    3.
    发明公开
    Enclosures for electrical switchgear 失效
    Einschliessungenfürelektrische Schaltanlage。

    公开(公告)号：EP0430446A1

    公开(公告)日：1991-06-05

    申请号：EP90311938.6

    申请日：1990-10-31

    申请人： NORTHERN ENGINEERING INDUSTRIES PLC

    发明人： Jackson, Leonard

    IPC分类号： H02B13/025

    CPC分类号： H02B13/025

    摘要： An enclosure for electrical switchgear is a box like structure made up of side panels (2, 4) front and rear panels (6 & 7) and external panels (28). The panels (2, 4 & 28) define chimneys (26) which are connected to the enclosure (14) via apertures (22, 24) at their lower ends. Thus if the gas filled circuit breaker chamber (20) explodes as a result of a fault developing, the enclosure (14) is relieved of the resulting pressure generated by the expanding gases by venting to a ventilation system via the apertures (22, 24) and the chimneys (26).

    摘要翻译： 电气开关柜的外壳是由侧板（2,4）前后面板（6和7）和外部面板（28）组成的盒状结构。 面板（2,4和28）限定了通过其下端处的孔（22,24）连接到外壳（14）的烟囱（26）。 因此，如果气体填充的断路器室（20）由于故障显影而爆炸，则外壳（14）通过经由孔（22,24）排放到通风系统而减轻由膨胀气体产生的所产生的压力， 和烟囱（26）。

    Crane with overload detector
    4.
    发明公开
    Crane with overload detector 失效
    Kran mitÜberlastdetektor。

    公开(公告)号：EP0358343A1

    公开(公告)日：1990-03-14

    申请号：EP89308173.7

    申请日：1989-08-11

    申请人： NORTHERN ENGINEERING INDUSTRIES PLC

    发明人： Allen, John

    IPC分类号： B66C23/90

    CPC分类号： B66C23/90

    摘要： A crane (10) comprises a support structure (12,14,16) on which are mounted a jib (18) and a winch (24), a load-handling rope (46) extending from the winch (24) over first pulley means (20) on the free end of the jib (18) to terminate in load-­engaging means (48). Second pulley means (32) are mounted on the support structure (12,14,16) between the winch (24) and the first pulley means (20), the rope (46) passing over the second pulley means (32) en route to the first pulley means (20), load-­sensing means (40,42) reacting between the second pulley means (32) and the structure (16) and being so arranged that, for the maximum safe load at any given operating radius of the jib (18), the load-­sensing means (40,42) experiences a substantially constant predetermined load thereon.

    摘要翻译： 起重机（10）包括支撑结构（12,14,16），其上安装有起重臂（18）和绞盘（24），负载操纵绳索（46）从绞盘（24）延伸到第一滑轮 在所述起重臂（18）的自由端上的装置（20）终止于负载接合装置（48）中。 第二滑轮装置（32）安装在绞盘（24）和第一滑轮装置（20）之间的支撑结构（12,14,16）上，绳索（46）在途中经过第二滑轮装置（32） 到第一滑轮装置（20），在第二滑轮装置（32）和结构（16）之间作用的负载感测装置（40,42），并且被布置成使得在任何给定的工作半径下的最大安全载荷 起重臂（18），负载感测装置（40,42）在其上经历基本恒定的预定负载。

    Electrical machines incorporating slot wedges
    5.
    发明公开
    Electrical machines incorporating slot wedges 失效
    电机加入槽盖

    公开(公告)号：EP0307216A3

    公开(公告)日：1989-11-23

    申请号：EP88308340.4

    申请日：1988-09-09

    申请人： NORTHERN ENGINEERING INDUSTRIES PLC

    发明人： Howland, Alan Victor

    IPC分类号： H02K3/487

    CPC分类号： H02K3/487

    摘要： An electrical machine (10) includes a component (12) such as a rotor or a stator with slots (14) formed therein in which are located conductors (16), the mouth of each slot (14) having a dovetail (18) formed therealong. The conductors (16) are retained in the slots (14) by slot wedges (20) each of which comprises an intermediate member (22) having lateral cam surfaces (26) thereon and a pair of side members (24) each having first and second lateral cam surfaces (30,32) thereon. The cam surfaces (26,30,32) are so shaped that, on location of the wedge (20) in a dovetail (18) and on movement of the intermediate member (22) relative to the side members (24) longitudinally of the slot (14) to wedge the side members (24) in the dovetail (18) and to wedge the intermediate member (22) between the side members (24), the intermediate member (22) is forced inwardly of the slot (14) relative to the side members (24) to impose a load on the conductors (16) thereby retaining them in the slot (14).

    摘要翻译： 电机（10）包括诸如转子或定子的部件（12），其中形成有槽（14），其中定位有导体（16），每个槽（14）的口具有形成的燕尾（18） 沿着其。 导体（16）通过狭槽楔（20）保持在槽（14）中，槽楔（20）包括在其上具有侧面凸轮表面（26）的中间构件（22）和一对侧构件 第二横向凸轮表面（30,32）。 凸轮表面（26,30,32）被成形为使得在楔形物（20）位于燕尾（18）中并且中间构件（22）相对于侧构件（24）在纵向上的移动 槽（14）楔入燕尾（18）中的侧构件（24）并将中间构件（22）楔入侧构件（24）之间，中间构件（22）被迫向槽（14）的内侧， 相对于侧构件（24）施加负载在导体（16）上，从而将它们保持在槽（14）中。

    Rotary electrical machines
    8.
    发明公开
    Rotary electrical machines 失效
    旋转电机

    公开(公告)号：EP0320252A3

    公开(公告)日：1990-12-05

    申请号：EP88311615.4

    申请日：1988-12-08

    申请人： NORTHERN ENGINEERING INDUSTRIES PLC

    发明人： Simpson, John

    IPC分类号： H02K15/02 ,  H02K1/18

    CPC分类号： H02K1/185 ,  H02K3/505 ,  H02K15/028 ,  Y10T29/49009

    摘要： A large scale horizontal axis rotary electrical machine has a stator with a laminated annular core (14) resting upon an open-topped support structure (12). At one position along its length the core is axially fixed to the support structure but is otherwise free to move axially on the structure to accommodate differential thermal movements. Clamping means (40,42) for the core laminations incorporate springs (44) that allow the core to expand axially. The stator windings are axially slidable in slots in the laminated core and are held by respective winding end supports (54,56) spaced from the ends of the core, whereby differential thermal expansion is accommodated between the core and the windings. By adoption of the open-topped support structure, assembly of the core can be accelerated by lowering individual lamination stampings or pre-assembled biscuits of such stampings onto the structure while the structure remains in a horizontal position.