Protective circuit for intrinsically safe electromagnetic actuators, and protective circuit for intrinsically safe energy supply systems
    1.
    发明申请
    Protective circuit for intrinsically safe electromagnetic actuators, and protective circuit for intrinsically safe energy supply systems 有权
    本质安全电磁执行器保护电路,本质安全能量供应系统保护电路

    公开(公告)号:US20060181156A1

    公开(公告)日:2006-08-17

    申请号:US11341112

    申请日:2006-01-27

    IPC分类号: H02H3/24

    摘要: The present invention relates to a protective circuit (30) for intrinsically safe electromagnetic actuators operating at the voltage of a power supply approved for underground mining, for switching electrohydraulic valves in underground mining, comprising a coil (11) connected to a first potential (2) and a second potential (3) of the power supply and associated with at least two spaced-apart short-circuit means (12) connected in parallel with the electromagnetic actuator coil (11) for short-circuiting the coil in the event of a reversal of the potential of the coil voltage. In accordance with the present invention the protective circuit comprises a semiconductor switch (T3) which is inserted between the coil (11) and the second potential (3) and, in the event of a voltage reduction or potential reversal, isolates the coil (11) from the second potential, so that the discharge from the coil (11) has no adverse effect on the energy supply system or the intrinsic safety.

    摘要翻译: 本发明涉及一种用于本地安全电磁致动器的保护电路(30),该电磁致动器在批准用于地下采矿的电源的电压下工作,用于在地下采矿中切换电液阀,包括连接到第一电位的线圈(2) )和电源的第二电位(3)并且与与电磁致动器线圈(11)并联连接的至少两个间隔开的短路装置(12)相关联,用于在线圈的短路 反转线圈电压的电位。 根据本发明,保护电路包括插入在线圈(11)和第二电位(3)之间的半导体开关(T 3),并且在电压降低或电位反转的情况下,隔离线圈 11)从第二电位,使得来自线圈(11)的放电对能量供应系统或本质安全性没有不利影响。

    Method and a device for tensioning endless drive belts
    2.
    发明授权
    Method and a device for tensioning endless drive belts 失效
    方法和用于张紧环形传动带的装置

    公开(公告)号:US5641058A

    公开(公告)日:1997-06-24

    申请号:US422123

    申请日:1995-04-11

    IPC分类号: B65G23/44 E21C29/14 B65G15/00

    CPC分类号: E21C29/145 B65G23/44

    摘要: The invention employs pressure and displacement sensors for the automatic monitoring and adjustment of the pre-tension of endless belts, in the form of chains or the like, which sensors determine the pressure in the cylinder space and the movement of the piston of the tensioning cylinder, and the measuring signals from which sensors are evaluated by an electronic evaluation and actuation unit. In this respect the evaluation and actuation unit calculates from the measuring signals the changes in pressure which occur over a predetermined partial stroke of the piston of the tensioning cylinder, wherein these changes in pressure reflect the state of tension of the chain belt. When the chain tension is incorrect, the evaluation and actuation unit can therefore control the tensioning cylinder so that the optimum chain tension is set automatically.

    摘要翻译: 本发明采用压力和位移传感器,用于自动监测和调节链条等的环形带的预张力,传感器确定气缸空间中的压力和张紧缸的活塞的运动 以及由电子评估和致动单元评估传感器的测量信号。 在这方面,评估和致动单元根据测量信号计算在张紧缸的活塞的预定部分行程上发生的压力变化,其中这些压力变化反映链带的张力状态。 当链张力不正确时,评估和执行单元因此可以控制张紧缸,使得最佳链张力被自动设定。

    Intrinsically-safe battery power supply for underground mining
    3.
    发明授权
    Intrinsically-safe battery power supply for underground mining 有权
    用于地下采矿的本质安全电池电源

    公开(公告)号:US08450004B2

    公开(公告)日:2013-05-28

    申请号:US12341745

    申请日:2008-12-22

    IPC分类号: H01M2/10

    摘要: An intrinsically-safe battery power supply for electrical equipment in underground mining and in other areas exposed to the danger of explosion is disclosed. The power supply includes at least one chargeable storage battery cell disposed in a battery housing. At least one storage battery cell comprises a chargeable lithium storage battery cell and the battery housing is configured to be pressure-resistant and to receive all lithium storage battery cells in a manner so as to be protected from explosion. The pressure-resistant configuration of the battery housing enables the use of lithium storage battery cells in underground mining. Once the battery power supply fulfills all requirements of ignition protection certification, even modern types of lithium storage battery cell can be disposed in the battery housing.

    摘要翻译: 公开了一种用于地下采矿和其他暴露于爆炸危险区域的电气设备的本质安全电池电源。 电源包括设置在电池壳体中的至少一个可充电蓄电池。 至少一个蓄电池单元包括可充电的锂蓄电池单元,并且所述电池壳体被配置为耐压并且以能够防止爆炸的方式接收所有锂蓄电池单元。 电池壳体的耐压构造使得能够在地下采矿中使用锂蓄电池。 一旦电池电源满足点火保护认证的所有要求,即使现代类型的锂蓄电池可以放置在电池外壳中。

    Housing cover for switching solenoid housing
    4.
    发明申请
    Housing cover for switching solenoid housing 有权
    用于切换电磁铁外壳的外壳

    公开(公告)号:US20070109083A1

    公开(公告)日:2007-05-17

    申请号:US11583615

    申请日:2006-10-19

    IPC分类号: H01H9/02

    CPC分类号: H05K5/06

    摘要: A housing cover for a solenoid housing operable for accommodating solenoids for switching hydraulic directional valves is disclosed. A housing cover box has a plurality of side walls, a top side, and an open bottom side, with first and second actuating guides for guiding first and second solenoid control push rods being located on the top side. A plug connector is located between the actuating guides. At least one screw clearance hole is located at each corner of the housing cover box for locating a screw for joining the housing cover box to the solenoid housing. A sealing plate is located between the housing cover box and the solenoid housing, and at least one mounting foot is located at a corner and on a bottom surface of the housing cover box. A tubular spigot is aligned with and extends each screw clearance hole.

    摘要翻译: 公开了一种可操作用于容纳用于切换液压换向阀的螺线管的螺线管壳体的壳体盖。 壳体盖盒具有多个侧壁,顶侧和敞开的底侧,第一和第二致动引导件用于引导位于顶侧的第一和第二螺线管控制推杆。 插头连接器位于致动引导件之间。 至少一个螺钉间隙孔位于壳体盖箱的每个角落处,用于定位用于将壳体盖盒连接到螺线管壳体的螺钉。 密封板位于壳体盖盒和螺线管壳体之间,并且至少一个安装脚位于壳体盖盒的角部和底部表面。 管状插口与每个螺钉间隙孔对齐并延伸。

    Individual controller for shield support frames
    5.
    发明申请
    Individual controller for shield support frames 有权
    单独控制器用于屏蔽支架

    公开(公告)号:US20060014439A1

    公开(公告)日:2006-01-19

    申请号:US11182552

    申请日:2005-07-15

    IPC分类号: H01R25/00

    摘要: The present invention is an individual controller for shield support frames in underground mining, having a shallow box-shaped housing for holding microelectronics comprising a top wall, a bottom wall, two side walls, a front wall and a back wall, with receptacles for connecting cable plugs from sensors and actuators and with at least one socket for connecting a plug of a cable for communicating with an adjacent individual controller.

    摘要翻译: 本发明是用于地下采矿中的屏蔽支撑框架的单独控制器,具有用于保持微电子的浅的盒形壳体,包括顶壁,底壁,两个侧壁,前壁和后壁,具有用于连接的插座 来自传感器和致动器的电缆插头和至少一个用于连接用于与相邻单独控制器通信的电缆插头的插座。

    Method for controlling drives of conveying machinery
    6.
    发明授权
    Method for controlling drives of conveying machinery 失效
    输送机械驱动控制方法

    公开(公告)号:US6029799A

    公开(公告)日:2000-02-29

    申请号:US111579

    申请日:1998-07-08

    IPC分类号: B65G23/36 B65G47/00

    CPC分类号: B65G23/36

    摘要: A method for controlling the main and auxiliary drives of conveyors, for example, in underground mining. The drives are controlled as a function of the loading of the conveyor in such a way that in a low load range of the conveyor the auxiliary drive produces a higher output (20.sub.I) than the main drives and as the load increases the output advantage of the auxiliary drive in relation to the main drives is reduced. This special load distribution to auxiliary and main drives has the advantage that sagging of the conveyor element, for example the chain of a scraper chain conveyor in the inaccessible and concealed lower strand, close to the main drive, can be prevented. The risk of damage to the machine frame or conveyor chain is thereby reduced.

    摘要翻译: 一种用于控制输送机的主要和辅助驱动器的方法,例如在地下采矿中。 传动装置以传送机装载的方式被控制,使得在传送装置的低负载范围内,辅助驱动器产生比主驱动器更高的输出(20I),并且由于负载增加了输出的输出优点 辅助驱动器相对于主驱动器减少。 对辅助和主驱动器的这种特殊的负载分配的优点在于,可以防止输送机元件的下垂,例如靠近主驱动器的不可接近和隐藏的下部链条中的刮板链式输送机链。 因此,机架或输送链的损坏风险降低。

    Protective circuit for intrinsically safe electro-magnetic actuators, and protective circuit for intrinsically safe energy supply systems
    7.
    发明授权
    Protective circuit for intrinsically safe electro-magnetic actuators, and protective circuit for intrinsically safe energy supply systems 有权
    本质安全电磁执行器的保护电路和本质安全能量供应系统的保护电路

    公开(公告)号:US07872846B2

    公开(公告)日:2011-01-18

    申请号:US11341112

    申请日:2006-01-27

    IPC分类号: H01H47/00

    摘要: A protective circuit (30) for intrinsically safe electromagnetic actuators operating at the voltage of a power supply approved for underground mining, for switching electrohydraulic valves in underground mining, comprising a coil (11) connected to a first potential (2) and a second potential (3) of the power supply and associated with at least two spaced apart short-circuit means (12) connected in parallel with the electromagnetic actuator coil (11) for short-circuiting ting the coil in the event of a reversal of the potential of the coil voltage. In accordance with the present invention the protective circuit comprises a semiconductor switch (T3) which is inserted between the coil (11) and the second potential (3) and, in the event of a voltage reduction or potential reversal, isolates the coil (11) from the second potential, so that the discharge from the coil (11) has no adverse effect on the energy supply system or the intrinsic safety.

    摘要翻译: 一种用于本地安全电磁致动器的保护电路(30),用于在被批准用于地下采矿的电源的电压下操作,用于在地下采矿中切换电液阀,包括连接到第一电位(2)的线圈(11)和第二电位 (3)并且与至少两个间隔开的与电磁致动器线圈(11)并联连接的短路装置(12)相关联,用于在线圈的电位反转的情况下短路线圈 线圈电压。 根据本发明,保护电路包括插入在线圈(11)和第二电位(3)之间的半导体开关(T3),并且在电压降低或电位反转的情况下,将线圈(11 ),使得来自线圈(11)的放电对能量供应系统或本质安全性没有不利影响。

    Method and a device for operating an electro-magnet on an intrinsically safe direct current circuit
    8.
    发明授权
    Method and a device for operating an electro-magnet on an intrinsically safe direct current circuit 有权
    用于在本质安全的直流电路上操作电磁铁的方法和装置

    公开(公告)号:US06985345B2

    公开(公告)日:2006-01-10

    申请号:US10391699

    申请日:2003-03-19

    IPC分类号: H01H47/00

    CPC分类号: H01F7/1844 H01F7/1805

    摘要: The present invention relates to a method for operation of an electro-magnet (2, 3) connected to an intrinsically safe direct current circuit which can be switched under control between two positions for the operation of the closing body of a hydraulic valve (5, 6), whereby using of an electronic control unit, the coil windings of the electro-magnet (2, 3) are taken in the pull-in phase of the armature of the electro-magnet to an exciting current and in the retaining phase of the armature to a lower retaining current as opposed to the excitating current, and a device with which the retaining current reduction is realized.

    摘要翻译: 本发明涉及一种连接到本质安全型直流电路上的电磁铁(2,3)的操作方法,该电磁铁可在两个位置之间进行控制,用于操作液压阀(5, 如图6所示,由此使用电子控制单元,电磁体(2,3)的线圈绕组在电磁铁的电枢的拉入阶段被吸入励磁电流,并且在保持阶段 电枢与激励电流相对较低的保持电流,以及实现了保持电流降低的装置。

    Face equipment for mining machinery
    9.
    发明申请
    Face equipment for mining machinery 审中-公开
    矿山机械设备

    公开(公告)号:US20050053430A1

    公开(公告)日:2005-03-10

    申请号:US10935617

    申请日:2004-09-07

    IPC分类号: E21D23/26 E21D23/12

    CPC分类号: E21D23/26

    摘要: Longwall face equipment for use in extraction in underground mining, comprising electrohydraulically operated support units each having a support controller 6, with at least one power unit being provided that supplies at least two support controllers 6 of differing support units with power, and with a bi-directional coupler being connected between the power unit and the at least two support controllers 6 and providing galvanic isolation between the power unit and the support controllers 6 and/or groups I, II of support controllers 6. The couplers permit communication between the two support controllers 6 and/or groups I, II of support controllers. In order to simplify the arrangement of the face, the coupler 12 is integrated into the power unit 11 or is flanged directly onto the housing of the power unit.

    摘要翻译: 用于在地下采矿中提取的长壁面设备,包括每个具有支撑控制器6的电液操作的支撑单元,其中提供至少一个动力单元,其提供具有动力的不同支撑单元的至少两个支撑控制器6, 连接在电力单元和至少两个支撑控制器6之间并且在电源单元和支撑控制器6和/或支撑控制器6的组I,II之间提供电隔离。耦合器允许两个支撑件 控制器6和/或支撑控制器的I,II组。 为了简化面的布置,耦合器12集成到动力单元11中,或直接凸缘到动力单元的壳体上。

    Warning tone transmitter
    10.
    发明授权
    Warning tone transmitter 有权
    警示音发射机

    公开(公告)号:US06774537B2

    公开(公告)日:2004-08-10

    申请号:US10260842

    申请日:2002-09-30

    IPC分类号: H01L4102

    摘要: The warning tone transmitter (10) according to the invention has a piezoelectric horn element (12) with two input connectors (29, 30) for the application of the supply voltage at a determined frequency and has a circuit arrangement (14) fed from the current supply, which generates the supply voltage. In order to be able to receive confirmation that the horn signal is actually generated by the warning tone transmitter (10) and in order to be able more easily to calibrate the warning tone transmitter (10) such that it is driven at its resonant frequency the piezoelectric horn element (12) has an additional output connector (34), which, when the horn element (12) is fed with the supply voltage, generates an answering signal taken to the circuit arrangement (14) if the piezoelement is actually oscillating. The magnitude of the answering signal is a value for the sound volume of the warning tone transmitter (10).

    摘要翻译: 根据本发明的警告音发射机(10)具有压电喇叭元件(12),其具有用于以确定的频率施加电源电压的两个输入连接器(29,30),并具有从 电流供应,产生电源电压。 为了能够接收由警报音发送器(10)实际产生喇叭信号的确认,并且为了能够更容易地校准警告音发送器(10),使得其以其谐振频率被驱动, 压电喇叭元件(12)具有附加的输出连接器(34),当所述喇叭元件(12)馈送电源电压时,如果所述压电元件实际上是振荡的,则生成应答信号到所述电路装置(14)。 应答信号的大小是警告音发送器(10)的音量的值。