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    • 4. 发明申请
    • WIND TURBINE BLADE TESTING SYSTEM USING BASE EXCITATION
    • 使用基准激励的风力涡轮机叶片测试系统
    • WO2009097055A2
    • 2009-08-06
    • PCT/US2008086662
    • 2008-12-12
    • ALLIANCE SUSTAINABLE ENERGYCOTRELL JASONTHRESHER ROBERTHUGHES SCOTTLAMBERT SCOTTJOHNSON JAY
    • COTRELL JASONTHRESHER ROBERTHUGHES SCOTTLAMBERT SCOTTJOHNSON JAY
    • F03D11/00F03D11/04
    • G01M7/06F03D17/00F05B2260/83G01M5/0016G01M7/04
    • An apparatus (500) for fatigue testing elongate test articles (404) including wind turbine blades through forced or resonant excitation of the base (406) of the test articles (404). The apparatus (500) includes a testing platform or foundation (402). A blade support (410) is provided for retaining or supporting a base (406) of an elongate test article (404), and the blade support (410) is pivotally mounted on the testing platform (402) with at least two degrees of freedom of motion relative to the testing platform (402). An excitation input assembly (540) is interconnected with the blade support (410) and includes first and second actuators (444, 446, 541) that act to concurrently apply forces or loads to the blade support (410). The actuator forces are cyclically applied in first and second transverse directions. The test article (404) responds to shaking of its base (406) by oscillating in two, transverse directions (505, 507).
    • 一种用于通过对测试物品(404)的基部(406)进行强制或共振激励来对包括风力涡轮机叶片的细长测试物品(404)进行疲劳测试的装置(500)。 装置(500)包括测试平台或基座(402)。 提供刀片支撑件(410)以保持或支撑细长测试物品(404)的基座(406),并且刀片支撑件(410)以至少两个自由度枢转地安装在测试平台(402)上 的运动相对于测试平台(402)。 激励输入组件(540)与刀片支撑件(410)互连并且包括用于同时向刀片支撑件(410)施加力或负载的第一和第二致动器(444,446,541)。 致动器力在第一和第二横向方向上循环施加。 测试物品(404)通过在两个横向(505,507)上振荡来响应其底座(406)的摇动。
    • 9. 发明授权
    • Pneumatic boom support for hand tools
    • 手动工具支持气动臂
    • US3917200A
    • 1975-11-04
    • US42490773
    • 1973-12-14
    • JOHNSON JAY
    • JOHNSON JAY
    • B25H1/00B66C23/00B66D1/00A47F5/00
    • B66C23/005B25H1/0028
    • A boom is connected to a support member through a hinge connection which permits both vertical and horizontal movement of the end of the boom. A pneumatic linear actuator, including a cylinder and a piston, is connected between the boom and the support member at the hinge such that the length of the actuator changes with vertical movement of the boom about the hinge support. A bleed-type adjustable pneumatic pressure regulator controls the air pressure applied to the actuator so as to exactly counterbalance the weight of the boom and tools supported on the end of the boom.
    • 悬臂通过铰链连接件连接到支撑构件,铰链连接允许悬臂端部的垂直和水平运动。 包括气缸和活塞的气动线性致动器在铰链处连接在悬臂和支撑构件之间,使得致动器的长度随着吊臂围绕铰链支撑件的垂直运动而变化。 排气式可调气动压力调节器控制施加到执行机构的空气压力,以精确地平衡起重臂的重量和支撑在起重臂末端的工具。