Abstract: A female coupling unit for a hydraulic coupling device, comprises a female coupling body comprising a hollow core, wherein a rear sealing ring is provided along an inner circumferential surface of a sealing sleeve device and adapted to bear against and slide along a front end portion of a female poppet device during movement of the sealing sleeve device, wherein the rear sealing ring is configured to prevent flow of hydraulic fluid between the rear sealing ring and the female poppet device from the rear end of the female coupling body towards the front end of the female coupling body and enable flow of hydraulic fluid between the rear sealing ring and the female poppet device from the front end of the female coupling body towards the rear end of the female coupling body.

Abstract: A hydraulic coupling device (10) comprising a female coupling unit (30) comprising a female coupling body (31), a holding block (50), a guiding ring (60), and an expanding ring (70) for fixedly arranging the female coupling unit (30) to the holding block 50 in an opening (52a) of the holding block (50), wherein the guiding ring (60) comprises an outer surface (60a) comprising a thread surface portion (60a1) configured to engage with a thread surface portion (52c1) of a cylindrical portion (52c) of the opening (52a) of the holding block (50) fixedly arranging the guiding ring (60) to the holding block (50), wherein a seat (53) is provided in the opening (52) for supporting the expanding ring (70), wherein an outer surface (31a) of the front end of the female coupling body (31) comprises a circumferential groove (31f) comprising a groove seat (31g), configured to receive the expanding ring (70), wherein the female coupling unit (30) is adapted to be fixedly arranged to the holding block (50) by being suspended

Abstract: A male coupling unit for a hydraulic coupling device, comprising a male coupling body comprising a hollow core comprising a male coupling body center axis extending in a male coupling body extension direction, wherein the male coupling body comprises an inner surface wherein the male coupling body further comprising a poppet valve device arranged in the hollow core, wherein the poppet valve device comprises a poppet device, a guide device, and a spring device, wherein a first end of the spring device is supported by the poppet device and a second end of the spring device is supported by the guide device, wherein the poppet device is movable in relation to the guide device along the male coupling body extension direction between an open and closed position upon compression and extension of the spring device respectively, wherein the guide device is locked in the male coupling body extension direction, wherein the inner surface comprises a thread surface portion, wherein the guide device comprises an outer surf

Abstract: The invention relates to a system and a method for, with a first and a second hand operated control means (11a, 11b), controlling movement on a work tool (5) for a construction machine (1). The construction machine (1) comprises a lower carriage (2), a top (3), a digging arm (4) and a work tool (5). The digging arm (4) comprises an inner link arm (4a) with a first and a second inner link arm end (4a1, 4a2) and an outer link arm (4b) with a first and a second outer link arm end (4b1, 4b2). The work tool (5) is secured in the second outer link arm end (4b2) via an attachment device (6) which enables controlled rotation and controlled tilting of the work tool (5) in relation to the outer link arm (4b).

Abstract: A quick coupler (1) for attaching a tool (2), comprising an attachment bracket with two parallel attachment pins (3a, 3b), to an earth moving vehicle, where the quick coupler (1) comprises a frame (4) with a first cutout (5) and a second cutout (6) arranged substantially perpendicular to each other, which are adapted to cooperate with the respective attachment pin (3a, 3b) of the tool (2). The quick coupler (1) further comprises at least one, in relation to the frame (4) moveable locking arrangement (9), adapted to delimit the second cutout (6) in a direction parallel to the first cutout (5), whereby one of the attachment pins (3aq, 3b) of the tool is locked in the second cut-out (6) and at least one locking segment (18a, 18b) arranged to be rotated in relation to the frame (4) in at least a first and a second direction between different positions, whereby the locking segment (18a, 18b) in at least one position delimit the first cut-out (5) and locks the second of the attachment pins (3a, 3b) of the tool.

Abstract: A quick coupler (1) for attaching a tool (2), comprising an attachment bracket with two parallel attachment pins (3a, 3b), to an earth moving vehicle, where the quick coupler (1) comprises a frame (4) with a first cutout (5) and a second cutout (6) arranged ranged substantially perpendicular to each other, which are adapted to cooperate with the respective attachment pin (3a, 3b) of the tool (2).

Abstract: The invention relates to a quick coupler (1) for attaching a tool (2), comprising an attachment bracket with two parallel attachment pins (3a, 3b), to an earth moving vehicle. The quick coupler (1) comprises a frame (4) with a first cutout (5) and a second cutout (6) arranged substantially perpendicular to each other, where the respective cutout is adapted to cooperate with the respective attachment pin (3a, 3b) of the tool (2). The quick coupler (1) further comprises at least one, in relation to the frame (4) moveable locking arrangement (9), adapted to delimit the second cutout (6) in a direction parallel to the first cutout (5), at least one, in the frame (4) arranged, actuator (8) adapted to move the locking arrangement (9) between a first open and a second locked position, and a lock indication device (10) which visually indicates if the locking part (9) is in the first or second position.