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85 条记录 (耗时 0.016 秒)

    WORK MACHINE
    4.
    发明公开
    WORK MACHINE 审中-公开

    公开(公告)号：EP4019453A1

    公开(公告)日：2022-06-29

    申请号：EP20854886.7

    申请日：2020-08-21

    申请人： TADANO LTD.

    发明人： SHIRAI, Manato ,  NAGAHAMA, Kazu ,  ZUSHI, Masahide

    IPC分类号： B66C23/693

    摘要： Provided is a work machine that allows an improvement in the degree of freedom in terms of design around a telescopic boom and an increase in the reliability when the boom is telescoping. The work machine includes: a telescoping actuator that moves a first boom in the telescoping direction with respect to a second boom; an electrical drive source that is disposed in a movable portion of the telescoping actuator; a first fixing pin that connects the telescoping actuator and the first boom; a first connection mechanism that switches a connection state between the telescoping actuator and the first boom on the basis of the power of the electrical drive source; a second fixing pin that connects the first boom and the second boom; a second connection mechanism that switches a connection state between the first boom and the second boom on the basis of the power of the electrical drive source; and a torque limiter that is disposed between the electrical drive source and the first connection mechanism or the second connection mechanism, the torque limiter maintaining, at a predetermined value or less, a load acting on a mechanical element constituting a power transmission path from the electrical drive source.

    CRANE
    5.
    发明公开
    CRANE 审中-公开

    公开(公告)号：EP3805143A1

    公开(公告)日：2021-04-14

    申请号：EP19812444.8

    申请日：2019-05-27

    申请人： TADANO LTD.

    发明人： KAWABUCHI, Naoto ,  WADA, Hisanori ,  MASUDA, Naotaka

    IPC分类号： B66C23/693 ,  B66C23/42

    摘要： This crane is provided with: a telescopic boom that can be extended; an extension device for extending the telescopic boom; a hydraulic pressure source provided in the extension device; a cylinder connection mechanism connected to the hydraulic pressure source and switching between the states of connection and non-connection with the telescopic boom on the basis of the supply and discharge of hydraulic oil; a first oil path for connecting the hydraulic pressure source and the cylinder connection mechanism; a first valve that is provided on the first oil path and switches the supply and discharge state of the hydraulic oil with respect to the cylinder connection mechanism; and a second oil path that bypasses the first valve and connects the hydraulic pressure source and the cylinder connection mechanism.

    AUTOMATIC BOOM TELESCOPIC MOTION APPARATUS FOR WORKING MACHINE
    6.
    发明公开
    AUTOMATIC BOOM TELESCOPIC MOTION APPARATUS FOR WORKING MACHINE 审中-公开

    公开(公告)号：EP3147252A4

    公开(公告)日：2018-01-17

    申请号：EP15796683

    申请日：2015-05-15

    申请人： TADANO LTD

    发明人： IKEDA TOMOHIKO ,  SATO TAKETO

    IPC分类号： B66C23/693 ,  B66C13/20 ,  B66C23/70

    CPC分类号： B66C13/18 ,  B66C13/20 ,  B66C23/42 ,  B66C23/54 ,  B66C23/701 ,  B66C23/705

    摘要： Provided is an automatic boom extension/contraction device for a work machine in which it is possible to reduce the burden, such as arm or hand fatigue, on a worker inputting an operation for extending or contracting a boom when the worker actuates the boom so as to extend or contact. When, in a state in which an automatic extension/contraction switch (53) is ON, an engine rotation speed equal to or greater than a first predetermined rotation speed (R1) is detected by an engine rotation speed sensor (51) and an operation in which the speed of extension/contraction actuation of a boom (22) is equal to or greater than a predetermined speed is inputted through a boom extension/contraction lever (52), an automatic extension/contraction actuation is performed in which the extension/contraction actuation of the boom (22) is maintained in a state in which an operation of extending/contacting the boom (22) is not inputted through the boom extension/contraction lever (52).

    A CRANE FOR LIFTING A LOAD
    8.
    发明公开
    A CRANE FOR LIFTING A LOAD 审中-公开
    LASTHEBEKRAN

    公开(公告)号：EP2542495A2

    公开(公告)日：2013-01-09

    申请号：EP11716649.6

    申请日：2011-02-28

    申请人： EFFER S.p.A.

    发明人： PERELLI, Luca

    IPC分类号： B66C23/70 ,  B66C23/693 ,  B66C23/697

    CPC分类号： B66C23/705 ,  B66C23/707 ,  B66C23/708

    摘要： A crane for lifting a load is applicable to a vehicle, in particular a motor vehicle or truck and comprises an extensible arm which is articulated at a respective end (3') to a pivoting arm and which can be lifted and lowered relative to the latter. The extensible arm (3) comprises a member (31) which is articulated to the pivoting arm from which extend a plurality of sliding members (40, 33, 34, 35, 36, 37, 38, 39), terminating with an end sliding member (40). The members (31, 40, 33, 34, 35, 36, 37, 38, 39) of the extensible arm (3) are coaxially inserted inside one another and are telescopically movable relative to each other between a respective retracted position and a respective extended position under the action of corresponding telescopic drive means (4). The telescopic drive means (4) comprise a first and a second actuator which are located inside respective members (31, 40, 33, 34, 35, 36, 37, 38, 39) of the extensible arm (3).

    Verrigelungs- und Betätigungseinheit für seitliche Auslegerverriegelung
    9.
    发明公开
    Verrigelungs- und Betätigungseinheit für seitliche Auslegerverriegelung 有权
    Verrigelungs- undBetätigungseinheitfürseitliche Auslegerverriegelung

    公开(公告)号：EP1484275A2

    公开(公告)日：2004-12-08

    申请号：EP04019505.9

    申请日：2001-05-04

    申请人： Grove U.S. LLC

    发明人： Richter, Frank ,  Stührwoldt, Dieter ,  Ennen, Jens

    IPC分类号： B66C23/693

    CPC分类号： B66C23/705 ,  B66C23/708

    摘要： Verriegelung für Teleskopschüsse, insbesondere für einen Mobilkranausleger,

    a) mit einem Verriegelungsbolzen (14), der einen inneren Teleskopschuss (18) mit einem äusseren Teleskopschuss in einer ausgefahrenen Stellung verbindet und in einer eingefahrenen Stellung freigibt, wobei
    b) der Verriegelungsbolzen (14) zwischen seiner ausgefahrenen Stellung und seiner eingefahrenen Stellung linear verschiebbar ist,
    c) der Verriegelungsbolzen (14) in einer Aufnahme (13) gelagert ist und
    d) der Verriegelungsbolzen (14) in seiner ausgefahrenen Stellung vorgespannt gehalten wird und
    e) eine Notbetätigung für ein Verschieben des Verriegelungszylinders (14) aus seiner ausgefahrenen Stellung in seine eingefahrene Stellung vorgesehen ist, und
    f) die Notbetätigung in die Aufnahme (13) integriert ist.

    摘要翻译： 锁定和操作单元具有锁定螺栓（14），其具有内部伸缩部分（18）和外部延伸部分（18），外部连接到延伸位置但不缩回时。 锁定螺栓可在其延伸位置和缩回位置之间线性移动。 它安装在带有紧急操作装置的凹槽（13）中。 它处于延伸的位置。