公开(公告)号：US5157947A

公开(公告)日：1992-10-27

申请号：US312075

申请日：1989-02-16

Applicant: Walter Weirich ,  Reiner Stich ,  Michael Dettmers

Inventor： Walter Weirich ,  Reiner Stich ,  Michael Dettmers

IPC: F16K15/18

CPC classification number: F16K15/18 ,  Y10T137/7781

Abstract: A valve device takes the form of a multi-part cartridge with a hollow stepped housing containing a stepped rod. A control piston at one end of the rod is opposed by the force of a main spring in a main chamber remote from the control piston. A valve closure member is axially displaceable relative to the rod. The valve closure member is normally held against a valve seating but pressure on the control piston displaces the rod and causes the valve closure member to be lifted from its seating via stop faces. An auxiliary chamber in the housing leads via a connection to some consumer appliance and forms, the downstream side of the valve. A compensating piston on the rod member opposes a face of the valve closure member open to the auxiliary chamber. A further spring in the auxiliary chamber holds the valve closure member on its seating. The valve can open independently of the control piston should the pressure on the upstream side of the valve exceed the consumer pressure. This upstream side usually leads to either the pressure line or a return line as determined for example, by a change-over valve. The valve closure member will respond reliably to increased pressure on the control piston which only has to overcome predetermined spring force independent of hydraulic pressure in the auxiliary chamber.

Abstract translation: 阀装置采用具有中空阶梯式壳体的多部分筒形的形式，其包含阶梯式杆。 杆的一端处的控制活塞与远离控制活塞的主室中的主弹簧的力相对。 阀关闭构件可相对于杆轴向移动。 阀关闭构件通常保持在阀座上，但是控制活塞上的压力使杆移位，并使阀关闭构件通过止动面从其座上抬起。 壳体中的辅助室通过与一些消费者用具的连接引出，形成阀的下游侧。 杆构件上的补偿活塞与通向辅助室的阀门关闭构件的面相对。 辅助室中的另一弹簧将阀关闭构件保持在其座上。 如果阀门上游侧的压力超过使用者的压力，阀门可独立于控制活塞打开。 该上游侧通常通过例如通过转换阀确定的压力线或返回线。 阀关闭构件将可靠地响应于控制活塞上的增加的压力，其仅需要克服与辅助室中的液压无关的预定弹簧力。

公开(公告)号：US4440522A

公开(公告)日：1984-04-03

申请号：US217968

申请日：1980-12-19

Applicant: Michael Dettmers ,  Walter Weirich

Inventor： Michael Dettmers ,  Walter Weirich

IPC: E21D23/06 ,  E21D23/08 ,  E21D23/16 ,  E21D15/14 ,  E21D23/00 ,  F15B11/20

CPC classification number: E21D23/16 ,  E21D23/063 ,  E21D23/08

Abstract: A roof support unit for a longwall mineral mining installation has a roof shield supported above a floor sill. A first hydraulic ram is provided for advancing the roof support unit. The roof shield is provided with a forward extension which is advanceable by means of a second hydraulic advance ram. A hydraulic control arrangement, which includes the two hydraulic advance rams is provided for controlling the advance of the roof shield extension in dependence upon the working stroke of the first hydraulic advance ram. The control arrangement is such that the amount of hydraulic fluid supplied to one of the pressure chambers of the second hydraulic advance ram is dependent upon the amount of hydraulic fluid expelled from one of the pressure chambers of the first hydraulic advance ram during the working stroke of the first hydraulic advance ram.

Abstract translation: 用于长壁矿物开采装置的屋顶支撑单元具有支撑在地板上方的屋顶护罩。 提供第一液压柱塞用于推进屋顶支撑单元。 屋顶护罩设置有可通过第二液压前进柱塞前进的向前延伸部。 提供了包括两个液压前进柱塞的液压控制装置，用于根据第一液压前进柱塞的工作行程来控制屋顶屏蔽延伸部的前进。 控制装置是这样的：供应到第二液压前进压头的一个压力室的液压流体的量取决于在工作冲程期间从第一液压前进压头的一个压力室排出的液压流体的量 第一液压推进柱塞。

公开(公告)号：US4572709A

公开(公告)日：1986-02-25

申请号：US481964

申请日：1983-04-04

Applicant: Walter Weirich ,  Michael Dettmers

Inventor： Walter Weirich ,  Michael Dettmers

IPC: E21D23/16 ,  E21D23/26 ,  E21D15/44

CPC classification number: E21D23/16 ,  E21D23/26 ,  Y10T137/7905

Abstract: Apparatus for controlling the working stoke of the hydraulic props of a mine roof support unit is disclosed. The control apparatus comprises a control valve whose input side is connected to a hydraulic pressure line, and whose output side is connected to a working chamber of each of the props via a respective supply line. A sequence valve is provided in the supply line leading to one of the props. The sequence valve is such as to open the associated supply line when subjected to a predetermined hydraulic pressure, this predetermined hydraulic pressure being at least approximately equal to the hydraulic pressure necessary to overcome the resistance to the working stroke of another of the props. The sequence valve has a tubular valve body, a valve closure element mounted within the valve body, and a valve seat positioned within the valve body. A spring is provided for biassing the valve closure element towards the valve seat. A control piston carries the valve seat, the control piston having a piston face which, when subjected to hydraulic pressure in the biassing direction of the spring, is effective to displace the control piston so as to move the valve seat away from the valve closure element, thereby opening the sequence valve.

Abstract translation: 公开了一种用于控制矿山屋顶支撑单元的液压支柱的工作行程的装置。 控制装置包括控制阀，其输入侧连接到液压管线，并且其输出侧经由相应的供给管线连接到每个道具的工作室。 在通向一个道具的供应管线中设置有顺序阀。 顺序阀在经受预定的液压时打开相关联的供应管线，该预定的液压压力至少近似等于克服对另一个道具的工作冲程的阻力所需的液压压力。 顺控阀具有管状阀体，安装在阀体内的阀关闭元件和位于阀体内的阀座。 提供一个弹簧用于将阀闭合元件朝向阀座偏压。 控制活塞承载阀座，所述控制活塞具有活塞面，当所述活塞面受到所述弹簧的偏压方向的液压压力时，所述活塞面有效地移动所述控制活塞，以使所述阀座移动离开所述阀闭合元件 从而打开顺序阀。

公开(公告)号：US4702148A

公开(公告)日：1987-10-27

申请号：US878154

申请日：1986-06-25

Applicant: Willy Kussel ,  Michael Dettmers ,  Walter Weirich

Inventor： Willy Kussel ,  Michael Dettmers ,  Walter Weirich

IPC: E21D23/16 ,  F15B11/22 ,  F15B21/08 ,  F15B11/00

CPC classification number: F15B11/22 ,  F15B21/08 ,  Y10T137/86686

Abstract: The invention relates to a method for the simultaneous actuation of a plurality of hydraulic consumers by means of intrinsically-safe electro-hydraulic valves. The consumers are connected by hydraulic directional control valves to a pressure line and/or a return line. These hydraulic directional control valves can be connected in a predetermined manner, via pre-control valves to a control line. The pre-control valves are pressureless, and possess electro-magnets with a current consumption of less than 50 milliamps. By connection of a series-connected electro-hydraulic directional control valve means, the pre-control valves are connected to the control line, and at the same time are hydraulically locked.

Abstract translation: 本发明涉及通过本质安全电动液压阀同时致动多个液压消耗器的方法。 消费者通过液压方向控制阀连接到压力管线和/或返回管路。 这些液压方向控制阀可以通过预控制阀以预定的方式连接到控制线。 预控阀是无压力的，并且具有消耗电流小于50毫安的电磁体。 通过串联连接的电动液压方向控制阀装置，预控阀连接到控制线，同时被液压锁定。

公开(公告)号：US4391181A

公开(公告)日：1983-07-05

申请号：US207507

申请日：1980-11-17

Applicant: Walter Weirich ,  Michael Dettmers ,  Kunibert Becker ,  Harry Rosenberg

Inventor： Walter Weirich ,  Michael Dettmers ,  Kunibert Becker ,  Harry Rosenberg

IPC: E21D23/16 ,  E21D23/26 ,  F15B13/04

CPC classification number: E21D23/16 ,  E21D23/26

Abstract: A hydraulic control system, particularly for controlling the operation of roof support props of a mine working, employs control devices operated manually to feed pressure fluid to the working chambers of the props to effect extension or retraction thereof. A two-state valve device is operated when the props are extended to ensure that the correct setting pressure is established. This valve device has a control piston which is actuated to cause the device to establish independent connection between the main fluid pressure line and the associated working chambers of the props charged with fluid by the initial operation of the control devices. The connection established by the valve device is maintained even if the control devices break connection between the chambers and the pressure line. When the correct setting pressure is reached, a further control piston of the valve device is actuated to break the connection established by the valve device ready for the next operative cycle.

Abstract translation: 特别是用于控制矿山作业的屋顶支撑道具的操作的液压控制系统使用手动操作的控制装置将压力流体供给到道具的工作室以实现其延伸或缩回。 当道具伸展时，操作双态阀装置，以确保建立正确的设定压力。 该阀装置具有控制活塞，该控制活塞被致动以使装置通过控制装置的初始操作在主流体压力管线和充满流体的道具的相关联的工作室之间建立独立的连接。 即使控制装置断开室和压力管线之间的连接，也保持由阀装置建立的连接。 当达到正确的设定压力时，阀装置的另一控制活塞被致动以打破由阀装置建立的连接准备下一个操作循环。

公开(公告)号：US4327628A

公开(公告)日：1982-05-04

申请号：US162546

申请日：1980-06-24

Applicant: Walter Weirich ,  Michael Dettmers

Inventor： Walter Weirich ,  Michael Dettmers

IPC: E21D23/26 ,  F15B11/16

CPC classification number: E21D23/26

Abstract: A hydraulic control system is provided for a mine roof support assembly constituted by a plurality of roof support units positioned side-by-side. The control system comprises a respective control valve assembly having a plurality of similar control valves each of which controls a respective hydraulic appliance associated with the corresponding roof support unit. Each control valve can be actuated optionally by an actuator mounted on either one of the two adjacent roof support units, or by either one of two actuating devices mounted one on each of said two adjacent roof support units. Each control valve includes two servo valves having a pair of first and second axially aligned servo-pistons which are separate and independently operable with respect to each other.

Abstract translation: 提供一种液压控制系统，用于由并排定位的多个屋顶支撑单元构成的矿山屋顶支撑组件。 控制系统包括具有多个类似的控制阀的各自的控制阀组件，每个控制阀控制与相应屋顶支撑单元相关联的相应的液压设备。 每个控制阀可以由安装在两个相邻屋顶支撑单元中的任一个上的致动器或者通过安装在所述两个相邻屋顶支撑单元中的每一个上的两个致动装置中的任一个来执行。 每个控制阀包括具有一对第一和第二轴向对准的伺服活塞的两个伺服阀，它们彼此分离并且可独立操作。

公开(公告)号：US4247226A

公开(公告)日：1981-01-27

申请号：US968682

申请日：1978-12-12

Applicant: Walter Weirich ,  Michael Dettmers

Inventor： Walter Weirich ,  Michael Dettmers

IPC: E21C35/14 ,  E21D23/16 ,  E21F17/08

CPC classification number: E21C35/14 ,  E21D23/16 ,  E21F17/08

Abstract: In a mine installation which employs a winning machine moved back and forth along a guide in a working and coupled via shifting rams to roof supports, the invention provides a hydraulic fluid supply conduit system for supplying the pressure fluid for operating the shifting rams and the props of the roof supports. The system employs a first conduit containing fluid at a pressure of 300 to 400 bars for setting the props of the roof supports, a second conduit containing fluid at a pressure of 100 to 200 bars for use as a robbing aid during retraction of the props, a third conduit containing fluid at a pressure of 100 to 200 bars for operating the shifting rams and a common fluid return conduit. The conduits are laid along the working and the first and the second or third conduits are fed by separate pumps in a heading or gallery while the third or second conduit is connected via a pressure-reducing valve to the pump feeding the first conduit. The cross-sections of the conduits are designed in a specific relationship defined hereinafter, to provide adequate pressure fluid flow while maintaining the desired pressure levels and minimizing back pressure.

Abstract translation: 在使用获胜机器的矿山装置中，沿着导向装置来回移动并通过转动公柱连接到屋顶支撑件，本发明提供一种液压流体供应管道系统，用于供应压力流体以操作换挡杆和道具 的屋顶支撑。 该系统采用包含流体的第一导管，其压力为300至400巴，用于设置屋顶支撑件的道具，第二导管包含在100至200巴的压力下的流体，用于在道具收回期间用作抢劫辅助装置， 第三导管包含在100至200巴的压力下的流体，用于操作所述移动公柱和公共流体返回管道。 导管沿着加工件铺设，并且第一和第二或第三导管由标题或图库中的分离的泵进给，而第三或第二导管通过减压阀连接到供给第一导管的泵。 导管的横截面以下文定义的特定关系设计，以提供足够的压力流体流动，同时保持期望的压力水平和最小化背压。

公开(公告)号：US5060556A

公开(公告)日：1991-10-29

申请号：US590560

申请日：1990-09-28

Applicant: Walter Weirich ,  Michael Dettmers ,  Uwe Trox

Inventor： Walter Weirich ,  Michael Dettmers ,  Uwe Trox

IPC: E21D23/16

CPC classification number: E21D23/16 ,  Y10T137/87209 ,  Y10T137/87885

Abstract: An electro-hydraulic control system for a mineral mining installation has a series of valve blocks, each contain a number of valves which are operated in dependence on electrical signals to cause hydraulic appliances of roof supports to operate. To allow emergency operation, when there is a power failure or when the control system fails or is otherwise inoperative, further manually operable valves are connected by a flexible, multi-core connecting cable to the valve block of the associated support. The emergency control valves can operate hydraulically controllable direction control valves of the control system and by-pass the electrical controls. The support can then be controlled purely hydraulically, at least in its main functions, using the emergency device.

Abstract translation: 用于矿物开采设备的电液控制系统具有一系列阀块，每个阀块包含多个根据电信号操作以使屋顶支撑件的液压设备操作的阀。 为了允许紧急操作，当出现电源故障或控制系统故障或其他不起作用时，通过柔性多芯连接电缆将更多的手动操作的阀连接到相关支撑的阀块。 应急控制阀可以操作控制系统的液压控制方向控制阀，并旁通电气控制。 然后可以使用紧急装置，至少在其主要功能中液压地控制支撑件。

公开(公告)号：US4613257A

公开(公告)日：1986-09-23

申请号：US563859

申请日：1983-12-21

Applicant: Walter Weirich ,  Michael Dettmers

Inventor： Walter Weirich ,  Michael Dettmers

IPC: E21D23/18 ,  E21D15/14 ,  E21D23/00 ,  E21D23/16 ,  F15B11/20

CPC classification number: E21D23/18

Abstract: A hydraulic control arrangement comprises a first hydraulic ram, a second hydraulic ram, and a hydraulic control circuit associated with the first and second hydraulic rams. Each of the hydraulic rams has a cylinder, a piston reciprocable within the cylinder, and a piston rod fixed to the piston. Each of the hydraulic rams has a cylindrical working chamber and an annular working chamber positioned on opposite sides of its piston. The piston rod of each hydraulic ram constitutes the cylinder of a respective metering ram, a respective metering piston being reciprocable within the cylinder of each metering ram to define a metering chamber therewithin. The hydraulic control circuit includes a line, which interconnects the two metering chambers, and a hydraulic valve positioned in a hydraulic fluid supply line leading to the cylindrical working chamber of the second hydraulic ram. The metering piston of the second hydraulic ram controls the hydraulic valve, thereby controlling the flow of hydraulic fluid to the cylindrical working chamber of the second hydraulic ram.

Abstract translation: 液压控制装置包括第一液压油缸，第二液压油缸和与第一和第二液压柱塞相关的液压控制回路。 每个液压柱塞具有气缸，可在气缸内往复运动的活塞以及固定到活塞的活塞杆。 每个液压柱塞具有圆柱形工作室和位于其活塞的相对侧上的环形工作室。 每个液压柱塞的活塞杆构成相应计量柱塞的气缸，相应的计量活塞可在每个计量压头的气缸内往复运动，以在其中定义计量腔。 液压控制回路包括连接两个计量室的管路和位于通向第二液压油缸的圆柱形工作室的液压流体供应管线中的液压阀。 第二液压柱塞的计量活塞控制液压阀，从而控制液压流体流向第二液压油缸的圆柱形工作室。

公开(公告)号：US4537221A

公开(公告)日：1985-08-27

申请号：US603456

申请日：1984-04-24

Applicant: Walter Weirich ,  Michael Dettmers

Inventor： Walter Weirich ,  Michael Dettmers

IPC: E21D23/16 ,  E21D23/26 ,  F15B13/02 ,  F16K31/122 ,  F16K31/524

CPC classification number: E21D23/26 ,  Y10T137/87121 ,  Y10T74/18288

Abstract: A compact hydraulic control device for use with mining apparatus is composed of a housing block containing tappet-operated valves. A multi-part cam shaft serves selectively to operate the valves by displacing the tappets by manual control effected by external levers. To automatically restore the cam shaft back into a neutral position as a "dead-man's handle" restoring system use is made of a pair of piston and cylinder assemblies mounted as detachable cartridges in parallel locations within bores in the housing block and having push rods which act on a cam of the cam shaft under the action of hydraulic or pneumatic pressure medium.

Abstract translation: 用于采矿设备的紧凑型液压控制装置由包含挺杆式阀的壳体块组成。 多部分凸轮轴用于通过由外部杠杆实现的手动控制来移动挺杆来选择性地操作阀。 为了自动将凸轮轴恢复为中立位置，因为“死人的手柄”恢复系统使用的是一对活塞和气缸组件，该活塞和气缸组件作为可拆卸的盒安装在壳体块中的孔内的平行位置，并具有推杆， 在液压或气动压力介质的作用下作用在凸轮轴的凸轮上。