Lifting device
    2.
    发明授权

    公开(公告)号:US11802030B2

    公开(公告)日:2023-10-31

    申请号:US17322215

    申请日:2021-05-17

    IPC分类号: B66D1/50 B66D1/36 B66D1/12

    CPC分类号: B66D1/505 B66D1/12 B66D1/36

    摘要: The lifting device includes a first drum around which a wire is wound, a first motor that rotates the first drum, a second drum around which the wire fed from the first drum is wound, and a second motor that rotates the second drum. The first motor is driven to rotate the first drum so as to lift the wire, and the second motor is driven to rotate the second drum to lift the wire fed from the first drum.

    TETHER MANAGEMENT SYSTEM AND METHOD

    公开(公告)号:US20220380186A1

    公开(公告)日:2022-12-01

    申请号:US17787523

    申请日:2019-12-18

    IPC分类号: B66D1/50 B64C39/02

    摘要: A tether management system is disclosed. The tether management system includes a spool, a tension sensor, a controller and a moveable pulley. The spool is rotatable to reel in and reel out a tether. The tension sensor measures a tension of the tether. The controller receives a desired tension of the tether and controls the rotation of the spool to reel in and reel out the tether based on a difference between a measured tension from the tension sensor and the desired tension of the tether. The moveable pulley is disposed to engage tether between the spool and the tension sensor. The moveable pulley being able to be biased and moveable along a linear path to adjust a tension of the tether when the tension of the tether deviates from the desired tension. A method for managing tether is also disclosed.

    Forestry Winch
    6.
    发明申请

    公开(公告)号:US20220259018A1

    公开(公告)日:2022-08-18

    申请号:US17670568

    申请日:2022-02-14

    申请人: Bernward Welschof

    IPC分类号: B66D1/50

    摘要: A forestry winch may include a rope drum driven by a drive motor, wherein a rope is wound up on the rope drum, wherein the rope drum is functionally connected with a brake device, wherein the brake device is in the form of a spring-loaded brake which is impinged by a spring device toward a braking position and by a hydraulic brake release pressure present in a brake release pressure line toward a release position, wherein the drive motor is in the form of a hydraulic motor which is connected by a first pressure medium line and a second pressure medium line to a multi-port control valve device controlling the drive motor, and a bypass valve device connecting the first and second pressure medium lines and is located in a connecting line connecting the first and second pressure medium lines and has a closed position and a flow position.

    Crane
    8.
    发明授权
    Crane 有权

    公开(公告)号:US10836612B1

    公开(公告)日:2020-11-17

    申请号:US16954125

    申请日:2018-12-18

    申请人: TADANO LTD.

    摘要: The present invention is provided with: a manipulation unit; a winch device that operates with an actuation mode of either a high speed mode or a low speed mode, and winds in or reels out a wire rope; a selection unit for an operator to select either the high speed mode or the low speed mode; a load calculation unit calculating a suspended load; a tension calculation unit calculating the tension of the wire rope; and a control unit controlling the actuation of the winch device. If the mode selected by the selection unit is the high speed mode, the manipulation unit is manipulated from a neutral state to a non-neutral state, and the suspended load is smaller than a load threshold and the tension is smaller than a tension threshold, the control unit controls the winch device so as to operate in the high speed mode.

    Electric winch device
    9.
    发明授权

    公开(公告)号:US10773932B2

    公开(公告)日:2020-09-15

    申请号:US16332505

    申请日:2017-09-04

    摘要: Provided is an electric winch apparatus capable of preventing irregular winding of a wire rope caused by landing of a hoisted-down suspended load. The electric winch apparatus includes a winch drum (5) around which a wire rope (2) is wound, an electric motor (8) which rotates the winch drum (5), an operation lever (13a), a measurement unit (18) which measures a tension index value corresponding to a tension in the wire rope (2), and a controller (12) which controls motion of the electric motor (8). The controller (12) stops motion of the electric motor (8) when an operation in a lowering operation direction is applied the operation lever (13a) and a tension average value as an average value of a tension in the wire rope (2) becomes less than or equal to a predetermined tension reference value, the average value of the tension corresponding to an average value of the tension index value in a predetermined period.

    Wire Pulling Wincher
    10.
    发明申请

    公开(公告)号:US20200207594A1

    公开(公告)日:2020-07-02

    申请号:US16685915

    申请日:2019-11-15

    申请人: Carl H. Hubener

    发明人: Carl H. Hubener

    摘要: A wire pulling windier apparatus attachable to a tractor, loader or other mobile transport device capable of receiving attachments has a pass through frame attachable to the mobile device, a vertical support member on the frame for supporting a first winch with cable for attaching and pulling a fence wire to be tensioned, a second winch for raising and lowering a slide block assembly through which the first winch cable is guided to allow pulling the first winch cable at different vertical heights, and has winch tension limiting apparatus.