Impact apparatus

An impact apparatus of the kind comprising at least two members (9, 11) movable relative to a body (10) of the apparatus, namely an impact member (11) and a transfer member (9), said impact member (11) being adapted to be subjected to such force that it carries out a working movement and applies impact, directly or indirectly, on the transfer member, which is adapted to directly or via a suitable impact application member (1) transfer the impact force to a work piece, a movement transmission device (12) acting between the transfer member (9) and a device (13) for activating force application on the impact member (11), whereby when the transfer member (9) is displaced due to actuation of the transfer member (9) or its impact application member against the work piece, the transmission device (12) causes actuation of the activating device, which causes force application on the impact member, said impact member (11) being pressure fluid driven and said activating device being a pressure fluid valve device (13) having at least one valve body (31) adapted to close and open respectively at least one passage intended for pressure fluid supply for driving the impact member, wherein the transfer member (9) has the character of a carrier for a wedge tool (1) adapted for moving portions (2, 3) of two elements (4, 5) away from each other by introduction of the tool between said portions, the carrier (9) is movable reciprocatingly relative to the body (10) in a generally rectilinear path of movement, the body is connected to or comprises a U-shaped, rigid protective device (16), having two mutually spaced legs (17) extending along the tool (1) on either sides thereof and a base (18) connecting the legs and located spaced from and generally opposite to the tip of the tool, the carrier (9) is prevented from turning relative to the body (10) and the U-shaped protective device (16), and the tool (1) tapers in a plane generally perpendicular to the plane of the U.

An impact apparatus of the kind comprising at least two members (9, 11) movable relative to a body (10) of the apparatus, namely an impact member (11) and a transfer member (9), said impact member (11) being adapted to be subjected to such force that it carries out a working movement and applies impact, directly or indirectly, on the transfer member, which is adapted to directly or via a suitable impact application member (1) transfer the impact force to a work piece, a movement transmission device (12) acting between the transfer member (9) and a device (13) for activating force application on the impact member (11), whereby when the transfer member (9) is displaced due to actuation of the transfer member (9) or its impact application member against the work piece, the transmission device (12) causes actuation of the activating device, which causes force application on the impact member, said impact member (11) being pressure fluid driven and said activating device being a pressure fluid valve device (13) having at least one valve body (31) adapted to close and open respectively at least one passage intended for pressure fluid supply for driving the impact member, wherein the transfer member (9) and impact member (11) are movable reciprocatingly relative to the body (10) in a generally rectilinear path of movement and the transmission device comprises a rod (12), which at one end (27) thereof is adapted to be actuated, directly or indirectly, by the transfer member (9), protrudes through an axial hole (26) in the impact member (11) and which at its other end (28) is adapted to actuate, directly or indirectly, the activating device (13), said transfer member being movably arranged relative to said rod.

An impact apparatus of the kind comprising at least two members (9, 11) movable relative to a body (10) of the apparatus, namely an impact member (11) and a transfer member (9), said impact member (11) being adapted to be subjected to such force that it carries out a working movement and applies impact, directly or indirectly, on the transfer member, which is adapted to directly or via a suitable impact application member (1) transfer the impact force to a work piece, a movement transmission device (12) acting between the transfer member (9) and a device (13) for activating force application on the impact member (11), whereby when the transfer member (9) is displaced due to actuation of the transfer member (9) or its impact application member against the work piece, the transmission device (12) causes actuation of the activating device, which causes force application on the impact member, said impact member (11) being pressure fluid driven and said activating device being a pressure fluid valve device (13) having at least one valve body (31) adapted to close and open respectively at least one passage intended for pressure fluid supply for driving the impact member, wherein the impact application member in the form of a tool (1) comprises a portion (49) for coordination with a portion of the transfer member (9), said former portion comprising at least one seat (51), the transfer member (9) comprising at least one cavity (52), a locking member (53) being adapted to be simultaneously received in said seat and said cavity of the tool and the transfer member respectively so as to interlock them, a locking ring (54) being axially movable relative to the transfer member between a first position, in which the locking ring overlaps the cavity of the transfer member and retains the locking member in its position for interlocking the transfer member and the tool, and a second position, in which the locking member is free to disengage from the seat (51) of the tool, a spring (15) acting between the body (10) and the locking ring (54) to actuate the latter to retain it in its first position relative to the transfer member as well as to actuate the transfer member via said locking ring to a starting or rest position relative to the body.