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    • 8. 发明申请
    • DEMOLITION HAMMER ARRANGEMENT FOR A REMOTE-CONTROLLED WORKING MACHINE EQUIPPED WITH A MANOEUVRABLE ARM
    • US20130300181A1
    • 2013-11-14
    • US13883549
    • 2011-11-02
    • Gunnar Bystedt
    • Gunnar Bystedt
    • F27D1/16B25D9/04
    • F27D1/1694B25D9/04B25D17/02E02F3/3681E02F3/966F27D1/16
    • The invention concerns a demolition arrangement for a remote-controlled working machine (1) equipped with a manoeuvrable arm (9), which machine, electrically powered and able to be driven on tracks (17), is principally intended for destruction and demolition work through the demolition processing with an impact tool (50) that operates through a hydraulically powered hammer (32) and where an operator walking next to the machine controls its various movements with a remote-control unit (4), which machine has a chassis (5) with an upper part (6) that is mounted in bearings on a lower part (7) in a manner that allows rotation for the rotation of the upper part in a horizontal plane around a vertical axis (8), whereby the manoeuvrable arm is supported at the upper part and including a series of arm parts (10, 11, 12) mutually joined to each other and that can be manoeuvred in a vertical plane by associated hydraulic cylinders (13, 14, 15), a link system (20) arranged at the free end of the arm that can be adjusted by means of a hydraulic cylinder (29) and designed as a combination of a coupling arrangement (21) for the attachment of a tool and a tilt or demolition arrangement (22) for the controlled oscillation around the centre of an axis (23) at the free end of the manoeuvrable arm of an impact tool inserted into the hammer. In order to make the work of demolition efficient, a rotary joint (35) is arranged at one of the arm sections (12) that are a component of the manoeuvrable arm (9), which rotary joint allows, through the influence of a rotator (36) a forward arm subsection (12:2) of the arm section, on which arm subsection the link system (20) is located, to place the end of the impact tool (50) that is located farthest forward against a working point in space though the forward arm subsection (12:2) being rotated around the longitudinal axis (A) of the arm section (12).
    • 9. 发明申请
    • DEMOLITION BIT WITH BOUNCE BACK BIT EXTRACTOR
    • 带有底部提取器的拆卸位
    • US20130256360A1
    • 2013-10-03
    • US13906756
    • 2013-05-31
    • Michael P. Valerio
    • Michael P. Valerio
    • B28D1/26
    • B28D1/26B25D17/005B25D17/02B25D17/24B25D2222/06B25D2222/57B25D2250/371Y10T225/10Y10T225/371
    • A chisel bit of a percussion tool for penetrating hard surfaces includes a shaft having a mounting end, a working end and upper and lower protuberances formed along its length. The upper protuberance provides for retaining the mounting end of the shaft within a body of the percussion tool. The lower protuberance forms a retaining collar beyond the body of the percussion tool against which a resilient extractor is mounted along the shaft. The resilient extractor includes an elastomeric member that is positioned by the retainer collar along the shaft to contact the hard surfaces penetrated by the chisel bit and exert a resilient bounce back force against the hard surfaces when the chisel bit has penetrated to a given depth to prevent the chisel bit from becoming stuck in place.
    • 用于穿透硬表面的冲击工具的凿子包括具有安装端,工作端和沿其长度形成的上下突起的轴。 上部突起提供将轴的安装端保持在冲击工具的主体内。 下突起形成超过冲击工具的主体的保持环,弹性提取器沿着该轴安装。 弹性提取器包括弹性体构件,该弹性体构件通过保持器套环沿着轴定位,以接触由凿子钻头穿过的硬表面,并且当凿钻头已经穿透到给定的深度以防止其发生弹性反弹力抵抗硬表面时 凿子就被卡住了。