A FORESTRY WINCH PROVIDED WITH AN ASSEMBLY FOR THE MEASUREMENT OF BRAKING POWER AND METHOD FOR ITS OPERATION

    公开(公告)号:EP3388386A1

    公开(公告)日:2018-10-17

    申请号:EP18000348.5

    申请日:2018-04-12

    申请人: Uniforest, D.o.o.

    摘要: A forestry winch provided with an assembly for the measurement of braking power, comprising a drum (2) that is arranged in a housing (1) and to which a hauling wire cable (3) is wound and stored, wherein the drum is pivotally attached on an axle (4) mounted in the housing; a clutch (5) arranged on one lateral side of the drum and connected with the Cardan shaft of a tractor; a drum brake (6) that is circumferentially arranged on another lateral side of the drum; a hydraulic block (7) comprising a hydraulic medium tank, a pump for providing pressure for the hydraulic medium, at! least one control unit in the form of a hydraulic or proportional hydraulic valve for the clutch control, at least one control unit in the form of a proportional hydraulic valve (8) that is connected with the hydraulic cylinder (9) with the belonging piston, a control unit (16) with which the user controls and operates the forestry winch, all said elements being mutually hydraulically connected, wherein the forestry winch comprises a deflection cylinder for deviating and shifting the hauling wire cable from its hauling direction, a measuring instrument (15) for measuring shifts, said instrument having an output signal, a control block arranged inside the housing of the winch and comprising at least one control unit with a regulating algorithm, wherein the control block is connected with the measuring instrument for measuring shifts in a way that allows reception of its output signal and is connected with the hydraulic block in a way that allows the control of the proportional hydraulic valve of the brake.

    METHOD AND TEST SYSTEM FOR TESTING FAILURE OF A MACHINERY BRAKE OF AN ELEVATOR

    公开(公告)号:EP2999658B1

    公开(公告)日:2018-07-04

    申请号:EP14800684.4

    申请日:2014-05-21

    申请人: KONE Corporation

    摘要: The purpose of the invention is to detect a failure situation wherein the machinery brake of an elevator does not open sufficiently. In the method for testing failure of a machinery brake of an elevator: the machinery brake is controlled to open; after this, the traction sheave is oscillated with a test torque; the movement of the elevator machine is measured in connection with the oscillation; if the machine does not move in connection with the oscillation, it is deduced that the machinery brake has not opened and has therefore failed. Most preferably a shorter time is selected as the oscillation time than the time according to the displacement function of the elevator mechanics for transmitting movement of the traction sheave into movement of the elevator car, in which case the oscillation is not noticed in the elevator car. This enables testing of a machinery brake when the elevator car is manned.

    ELECTROMAGNETIC-RELEASED, MULTI-DISC ENCLOSED SAFETY BRAKE
    76.
    发明公开
    ELECTROMAGNETIC-RELEASED, MULTI-DISC ENCLOSED SAFETY BRAKE 审中-公开
    电磁释放,多碟式封闭式安全制动器

    公开(公告)号:EP3250450A1

    公开(公告)日:2017-12-06

    申请号:EP16744076.7

    申请日:2016-01-28

    申请人: PT TECH, LLC

    摘要: An electromagnetic-released, multi-disc, enclosed safety brake for primary use in offshore marine winch applications includes a stationary coil housing that encompasses springs that apply pressure to an armature, a pair of separator plates, three friction plates and a stationary endplate. The multi-disc brake is released by means of a DC voltage applied to the brake coil. The excited coil generates an electromagnetic force that attracts the armature across an air-gap thus reducing the spring force applied to the disc pack. The brake is applied when the DC voltage is removed from the brake coil. Various structures and methodologies for reducing vibrations in the brake are also provided.

    ELECTRIC WINCH DEVICE
    79.
    发明公开
    ELECTRIC WINCH DEVICE 有权
    ELEKTRISCHE WINDE

    公开(公告)号:EP3072845A4

    公开(公告)日:2017-07-19

    申请号:EP14864287

    申请日:2014-11-06

    IPC分类号: B66D1/46 B66D1/12 B66D5/30

    CPC分类号: B66D1/46 B66D1/12 B66D5/30

    摘要: Provided is an electric winch device including: an electric motor; a winch drum; a brake; an operation lever; an ammeter; and a controller. The controller includes: a first torque derivation unit which derives a value of a first torque applied to the winch drum due to a load of an object; a second torque derivation unit which derives a value of a second torque generated in the winch drum in the direction of rotation for hoisting the object by a drive torque of the electric motor, on the basis of a current value measured by the ammeter; and a brake control unit which determines a timing for releasing a braking action on the winch drum after the operation lever has been operated to a hoisting side or a lowering side, on the basis of a differential between the second torque value derived by the second torque derivation unit and the first torque value derived by the first torque derivation unit, and which causes the brake to release the braking action on the winch drum by transmitting, to the brake, a control signal instructing release of the braking action on the winch drum at the determined timing.

    摘要翻译: 提供了一种电动绞盘装置,包括:电动机; 绞车鼓; 刹车; 操作杆; 电流表; 和一个控制器。 该控制器包括:第一转矩导出单元,其导出由于物体的负载而施加到绞盘鼓上的第一转矩的值; 第二转矩导出单元,其基于由电流计测量的电流值导出在用于通过电动机的驱动转矩提升对象的旋转方向上在绞车滚筒中产生的第二转矩的值; 以及制动控制单元,该制动控制单元基于由第二转矩获得的第二转矩值与第二转矩之间的差,确定用于在操作杆已经被操作到提升侧或下降侧之后解除绞盘鼓上的制动作用的定时 以及通过第一转矩导出单元导出的第一转矩值,并且通过向制动器传递控制信号,该控制信号指示释放在绞盘鼓上的制动作用,该第一转矩值通过第一转矩导出单元导出,并且使制动器释放绞盘鼓上的制动作用 确定的时间。