| 摘要 |
<p>PCT No. PCT/SE83/00399 Sec. 371 Date Jul. 5, 1984 Sec. 102(e) Date Jul. 5, 1984 PCT Filed Nov. 15, 1983 PCT Pub. No. WO84/02152 PCT Pub. Date Jun. 7, 1984.A coupling means for detachably coupling a working implement (1) to the operating arm of an excavating machine, said coupling means comprising an attachment means (25) supported by the operating-arm stick and operating cylinder and having a shaft (23) journalled horizontally at the stick, and a shaft (24) journalled on the operating cylinder, said coupling means also comprising an attachment means (20) supported by the implement (1) and comprising a coupling device (4, 5) and a locking device (21). According to the invention the attachment means (25) of the operating arm comprises two link arms (26, 27) journalled at the shafts (23, 24), each link arm having a free abutment portion (36) protruding as an extension of the link arm in backward direction from the shaft (24). The link arms (26, 27) and the implement attachment means (20) comprise counter members (39 and 16, 17) cooperating with each other under pressure, the locking device (11, 21) being arranged to exert pressure on the abutment portions (36) of the link arms (26, 27), thus moving the link arms (26, 27) in the direction of the coupling device (4, 5) through wedge and lever cooperation with said counter members (16, 17 and 39) and abutment portions (36) and pressing the operating arm attachment means (25) against the coupling device (4, 5) to produce a permanent, play-free joint between implement (1) and operating arm.</p> |
