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58 条记录 (耗时 0.018 秒)

    Tower lifting device for rotary blasthole drill
    2.
    发明授权
    Tower lifting device for rotary blasthole drill 有权

    公开(公告)号：US10316540B2

    公开(公告)日：2019-06-11

    申请号：US15504805

    申请日：2015-07-31

    申请人： ATLAS COPCO (NANJING) CONSTRUCTION AND MINING EQUIPMENT LTD.

    发明人： Jie Zhao ,  Ning Heng ,  Chengyun Zhu

    IPC分类号： F16D31/02 ,  E04H12/34 ,  F15B11/046 ,  F15B11/042 ,  F15B11/04 ,  F15B11/044 ,  E21B15/00 ,  E21B7/02

    摘要： Disclosed is a tower lifting device for a rotary blasthole drill, comprising a hydraulic cylinder (5), an extending oil path (7), a retracting oil path (6), a speed control oil path (14) and a proximity switch (3), wherein the extending oil path (7) is connected to a non-rod-end chamber of the hydraulic cylinder (5), and an extension control unit is provided on the extending oil path (7); the retracting oil path (6) is connected to a rod-end chamber of the hydraulic cylinder (5), and a retraction control unit is provided on the retracting oil path (6); the speed control oil path (14) is connected to the retracting oil path (6), the speed control oil path (14) is connected to a speed control valve block (15) in series and the tail end thereof is connected to an oil tank (16); the proximity switch (3) is arranged on a tower supporting frame (2) for controlling the switching on and off of the speed control valve block (15), and when the tower (4) is approximately in a horizontal state, the speed control valve block (15) is on. By using such a tower lifting device in the present invention, the speed at which the tower is laid down to a horizontal state can be conveniently controlled.

    Method for Operating a Valve Device, Valve Device and Data Storage Medium with a Computer Program
    3.
    发明申请
    Method for Operating a Valve Device, Valve Device and Data Storage Medium with a Computer Program 审中-公开

    公开(公告)号：US20190136880A1

    公开(公告)日：2019-05-09

    申请号：US16090985

    申请日：2017-04-04

    申请人： FESTO AG & Co. KG

    发明人： Rudiger Neumann ,  Matthias Doll ,  David Rager

    IPC分类号： F15B21/02 ,  F15B11/00 ,  F15B11/046 ,  F15B11/064 ,  F15B13/02 ,  F15B15/22 ,  F15B15/28 ,  F15B21/08 ,  F15B1/033

    摘要： A method for operating a valve device for supplying compressed air to compressed air consumer includes the method comprising the steps of: determination of a first fluid pressure in a first section of a fluid passage of a valve assembly, which extends between an inlet port, and a valve element, determination of a second fluid pressure in a second section of the fluid passage of the valve assembly, which extends between the valve element and an outlet port, determination of a flow value for the valve element from the two fluid pressures and of a flow function, relating of the flow value with a presettable volumetric fluid flow rate or mass fluid flow rate for the pressurised fluid, which flow rate is provided for flow through the fluid passage, to a guide value and determination of a required actuating energy for an actuating device, and provision of the actuating energy to the actuating device.

    Hydraulic feed-rate control apparatus
    4.
    发明授权
    Hydraulic feed-rate control apparatus 有权
    液压进给速度控制装置

    公开(公告)号：US08997625B2

    公开(公告)日：2015-04-07

    申请号：US13534868

    申请日：2012-06-27

    申请人： Takahiro Murai ,  Hideki Uchiuzo ,  Minoru Ihara

    发明人： Takahiro Murai ,  Hideki Uchiuzo ,  Minoru Ihara

    IPC分类号： F15B11/046 ,  F15B15/22

    CPC分类号： F15B11/046 ,  F15B15/22 ,  Y10T137/794 ,  Y10T137/87153 ,  Y10T408/6757

    摘要： A hydraulic feed-rate control apparatus pushes out a fluid by a main piston to a reservoir chamber via feed-rate adjustment mechanisms and flow passages and adjusts a feed rate of a reciprocating body; the adjustment mechanisms comprises first and second throttle valves arranged at front ends of a cylinder and adjusting flow rates of the fluid flowing into the flow passages; the main piston comprises an auxiliary piston integrally moving, and opening and closing the second throttle valve; and the auxiliary piston comprises an outer peripheral portion fitted in the second throttle valve and closed, a concave portion formed between a front portion and rear portion of the outer peripheral portion, a circulation hole formed in an inner peripheral portion of the auxiliary piston, rear-portion escape holes communicating the rear portion and the circulation hole, and concave-portion escape holes communicating the concave portion with the circulation hole.

    摘要翻译： 液压进给速度控制装置通过进给速度调节机构和流动通道将主活塞的流体推出到储存室，并调节往复运动体的进给速度; 所述调节机构包括布置在气缸前端的第一和第二节流阀，并且调节流入所述流动通道的流体的流量; 主活塞包括一体地移动的辅助活塞，并且打开和关闭第二节流阀; 所述辅助活塞包括装配在所述第二节流阀中的外周部分并关闭，形成在所述外周部的前部和后部之间的凹部，形成在所述辅助活塞的内周部分中的循环孔， 连通后部和循环孔的分支排出孔以及将凹部与循环孔连通的凹部排出孔。

    Device for speed control of cylinder piston, particularly useful for a firearm
    5.
    发明授权
    Device for speed control of cylinder piston, particularly useful for a firearm 失效
    气缸活塞速度控制装置，对枪支特别有用

    公开(公告)号：US4411188A

    公开(公告)日：1983-10-25

    申请号：US217598

    申请日：1980-12-18

    申请人： Olle Gustavsson

    发明人： Olle Gustavsson

    IPC分类号： F16F9/34 ,  F15B11/046 ,  F15B15/22 ,  F16F9/48 ,  F41A3/30 ,  F41A9/00 ,  F41F11/07

    CPC分类号： F15B11/046 ,  F15B2211/30525 ,  F15B2211/3127 ,  F15B2211/327 ,  F15B2211/40515 ,  F15B2211/424 ,  F15B2211/455 ,  F15B2211/46 ,  F15B2211/7053 ,  F15B2211/75 ,  F15B2211/7716

    摘要： In a device for achieving speed control of a cylinder piston in relation to the cylinder, or vice versa, flow control means (12, 32) are utilized, and also cam profiles (15, 16 and 26, 27). The flow control means are composed of two constant flow valves (30a, 30b and 31a, 31b) which determine the flow for one each of the directions of the piston or the cylinder. The cam profile means have a first cam profile (15 and 26, respectively) which is connected when the piston (6) or the cylinder (5) moves in its first direction, and a second cam profile (16 and 27, respectively) which is connected when the piston or cylinder moves in its second direction. The flow control valves are controlled mechanically by the respective cam profiles via its respective control input (12c', 12c") and determine a flow for the piston or cylinder which is dependent on the controlling but independent of the load on the piston or the cylinder.

    摘要翻译： 在用于实现相对于气缸的气缸活塞的速度控制的装置中，反之亦然，使用流量控制装置（12,32），以及凸轮轮廓（15,16和26,27）。 流量控制装置由确定活塞或气缸的每个方向的流量的两个恒定流量阀（30a，30b和31a，31b）组成。 凸轮轮廓装置具有当活塞（6）或气缸（5）沿其第一方向移动时连接的第一凸轮轮廓（分别为15和26）和分别为第二凸轮轮廓（16和27）的第二凸轮轮廓 当活塞或气缸沿其第二方向移动时连接。 流量控制阀通过其相应的控制输入（12c'，12c“）由相应的凸轮轮廓机械地控制，并且确定活塞或气缸的流量，该流量取决于控制，而与活塞或 圆筒。

    Electro hydraulic drive and control system
    9.
    发明授权
    Electro hydraulic drive and control system 有权

    公开(公告)号：US10968603B2

    公开(公告)日：2021-04-06

    申请号：US16302318

    申请日：2017-05-17

    申请人： FLUTRON AB

    发明人： Stig Stenlund

    IPC分类号： E02F9/22 ,  F15B21/14 ,  F15B15/20 ,  F15B11/042 ,  F15B11/046 ,  F15B11/17 ,  E02F9/26

    摘要： A operator supporting electrohydraulic drive and control system based on, position sensors (8) (9), a electronic control unite ECU (2), a recovery, storing and re-use system for energy, and with actuator (3) (4) and the drive control valve (6) (7) bolted together in one (3+6) (4+7) unite and with the valve (6) (7) independently of the ECU (2) is controlling effective use of pump capacity and recovery of energy and with control of speed for low speeds, or prevented speed by valves (6) (7) or pump (10) (10a) (11) (11a) displacement and for higher speed with control of deplacement of pumps and motors and with valves (6) (7) at the same time controlled to be fully open.

    Intelligent boom control with rapid system cycling
    10.
    发明授权
    Intelligent boom control with rapid system cycling 有权

    公开(公告)号：US10480541B2

    公开(公告)日：2019-11-19

    申请号：US15643008

    申请日：2017-07-06

    申请人： Deere & Company

    发明人： Tyler D. Bellows ,  Calin L. Raszga ,  Daryl I. Rober

    IPC分类号： F15B11/20 ,  A01G23/081 ,  F15B13/06 ,  B66F9/22 ,  E02F9/22 ,  F15B11/046 ,  F15B11/16 ,  F15B21/08

    摘要： A work machine has a connecting valve which is positioned fluidly between a hoist actuator and a stick actuator to permit fluid flow between the hoist actuator and the stick actuator when the connecting valve is open. When the connecting valve is closed, fluid flow is inhibited between the hoist actuator and the stick actuator. A controller can receive information from a hoist boom position sensor and a stick boom position sensor, the controller can receive input from a user interface, and the controller can communicate signals to the hoist actuator and the stick actuator based upon the information from the hoist boom position sensor and the stick boom position sensor, and the input from the user interface.