发明授权
US4776407A Clamping attachment to a device for driving rod elements of low rigidity into the ground 失效
夹紧装置,用于将低刚度的杆件驱动到地面上

Clamping attachment to a device for driving rod elements of low rigidity
into the ground
摘要:
A clamping attachment to a device for driving elongated rod elements of lowigidity into the ground comprises a housing (1) having a through tapered interior (2) and shoulders (7) on the outer surface. The interior (2) of the housing accommodates two spring-biased wedging elements (3) with slots (4). The slots (4) receive ends of arms (9) secured on the shoulders (7). Interposed between the spring (12) and wedging elements (3) is a washer plate (14). End faces (16, 17) of the wedging elements (3) and washer plate (14) are tapered. Contact surfaces (10, 11) of the slots (4,) and arms (9) are inclined to the longitudinal axis of the clamping attachment.
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