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公开(公告)号:US5702112A
公开(公告)日:1997-12-30
申请号:US454237
申请日:1995-06-13
IPC分类号: B25D17/08
CPC分类号: B25D17/08 , Y10T279/17042 , Y10T279/17085 , Y10T279/17923 , Y10T403/585 , Y10T403/7018
摘要: In the front head (11) of a machine hammer (10), transversely disposed wedges (18) are adapted to lock the working tool (12) so that the working tool (12) is axially movable by form-restricted cooperation with recesses (16) on the working tool (12). Each wedge (18) is locked in the front head (11) by a key (20), which extends across the wedge (18) into engagement with a transverse bore (21) therein. The key (20) has a releasable locking device including a locking element affixed in the front head (11) and formed by a polyurethane block (24). The block (24) is provided with a through bore (27) and has elastically form-recovering material properties. When, for purposes of locking the key (20), the key (20) is pressed through the bore of the block (24), the block (24) is caused to expand resiliently into an annular groove (22) on the key (20), thereby locking the key (20) in the front head (11) and providing its wedge (18) locking function. In use of two wedges (18), one single key (20) is set to lock both wedges (18) and is locked by one single block (24).
摘要翻译: PCT No.PCT / SE93 / 01066 Sec。 371日期:1995年6月13日 102(e)日期1995年6月13日PCT提交1993年12月14日PCT公布。 公开号WO94 / 14580 日期1994年7月7日在机械锤(10)的前头(11)中,横向设置的楔形件(18)适于锁定加工工具(12),使得加工工具(12)可以通过形式 - 与工作工具(12)上的凹部(16)的限制协作。 每个楔子(18)通过键(20)被锁定在前头部(11)中,钥匙(20)延伸穿过楔形件(18),与其中的横向孔(21)相接合。 钥匙(20)具有可释放的锁定装置,其包括固定在前头部(11)中并由聚氨酯块(24)形成的锁定元件。 块(24)设置有通孔(27)并且具有弹性形状恢复材料特性。 当为了锁定钥匙(20)的目的,将钥匙(20)按压在块体(24)的孔中时,块体(24)被弹性地膨胀到钥匙上的环形槽(22)中 20),从而将钥匙(20)锁定在前头(11)中并提供其楔(18)锁定功能。 在使用两个楔形件(18)时,设置一个单个键(20)以锁定两个楔形件(18)并被一个单个块(24)锁定。