E - Fixed Constructions – 02 – F
Patent
E - Fixed Constructions
02
F
214/40.1
E02F 3/36 (2006.01)
Patent
CA 1316495
ABSTRACT A device in a quick coupling for detachably coupling a working implement (50) to the operating arm (51) of an excavating machine, comprising two parallel link arms (11, 12), each link arm having a support surface (16), and a locking means comprising a stationary wedge support (4) attached to the working implement (50) with an engagement surface (5) facing the working implement (50) and a movable tension pin (7) displaceable by a power cylinder (21) and having an engagement surface (6) for wedging cooperation with the engagement surface (5) of the wedge support (4), said locking means having support surfaces (24) to cooperate by means of pressure with the support surfaces (16) of the link arms (11, 12). According to the invention the locking means comprises a locking unit (19) supported by the link arms (11, 12), said locking unit (19) having a rigid housing (20) extending between the link arms (11, 12), in which the tension pin (7) is axially displaceable by the power cylinder (21) between an outer free position and an inner locking position, said housing (20) having an opening (33) disposed vertically in line with the wedge support (4) of the working implement (50) for receipt of the wedge support (4) therein when the tension pin (7) is in its free position. The housing (20) is provided with opposite supporting pins (22, 23) axially aligned to each other and arranged to be received freely in openings (15) in the link arms (11, 12), said supporting pins (22, 23) and openings (15) being provided with said pressure-cooperating support surfaces (16, 24). Furthermore the tension pin (7) is of such sufficient length that its front end portion (40) located at the engagement surface (6) in locking position of the tension pin (7) is positioned in a cavity (34) of the housing (20) and has a support surface (41) for pressure-cooperation with a support surface (43) in the cavity (34). One of the supporting pins (22) is provided with a through-hole (36) to receive a rear end portion (45) of the tension pin (7) in its locking position.
572402
Gowling Lafleur Henderson Llp
Smp Parts Ab
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