A gripping device for a drill string component handling device in a rock drill rig. Gripper element pairs are supported by a body and include at least one gripper element, being pivotally movable around a pivot joint, between a closed position, including a gripping position, and an open position. The pivotally movable gripper element is pivotal in a respective gripper plane forming a right angle to an axial direction. Each movable gripper element includes an actuation portion, which co-operates with a wedge device being movable in directions parallel to the axial direction for pivoting said movable gripper element. A method, a drill string component handling device for a rock drill rig and a rock drill rig including a drill string component handling device.

A gripping device for a drill string component handling device in a rock drill rig. Gripper element pairs are supported by a body and include at least one gripper element, being pivotally movable around a pivot joint, between a closed position, including a gripping position, and an open position. The pivotally movable gripper element is pivotal in a respective gripper plane forming a right angle to an axial direction. Each movable gripper element includes an actuation portion, which co-operates with a wedge device being movable in directions parallel to the axial direction for pivoting said movable gripper element. A method, a drill string component handling device for a rock drill rig and a rock drill rig including a drill string component handling device.

A bolt adjustment device having a body, a clamping mechanism and an attachment point. The body extends in a longitudinal direction from a first end to a second end, the body having a cavity extending into the body in the longitudinal direction from the first end. The cavity can accommodate a thread during use of the bolt adjustment device. A step in the cavity is configured and arranged to engage with a nut when in use. A torque imparted on the attachment point will impart a torque to the bolt adjustment device. The clamping mechanism is attached to the attachment point such that the clamping mechanism clamps the nut in the cavity when torque is imparted on the clamping device.

A reciprocating wrench for quick combining fastener includes a main body, a claw, and an elastic positioning device therebetween. The main body includes a concavely-shaped first jaw opening, which has a pivot end at an end thereof. The claw includes a concavely-shaped second jaw opening, which has a pivotal combination portion at an end thereof. The pivotal combination portion is pivotally connected with the pivot end, such that the claw and the main body pivotally move with respect to each other. The elastic positioning device allows the claw to optionally rotate toward a closing direction or remain in the opening status. Therefore, the claw is able to remain in the opening status for combining the fastener.

A reciprocating wrench for quick combining fastener includes a main body, a claw, and an elastic positioning device therebetween. The main body includes a concavely-shaped first jaw opening, which has a pivot end at an end thereof. The claw includes a concavely-shaped second jaw opening, which has a pivotal combination portion at an end thereof. The pivotal combination portion is pivotally connected with the pivot end, such that the claw and the main body pivotally move with respect to each other. The elastic positioning device allows the claw to optionally rotate toward a closing direction or remain in the opening status. Therefore, the claw is able to remain in the opening status for combining the fastener.

An adjustable dual-range wrench including an elongate handle and a fixed jaw carried by the handle. The fixed jaw includes multiple teeth disposed linearly along the jaw. A hook jaw is pivotably coupled to the handle opposite the fixed jaw. A toothed lobe is adjustably positioned along the fixed jaw between an outer engagement region sized to engage a first range of sizes and an inner engagement region sized to engage a second range of sizes. The hook jaw comprises a first set of teeth associated with the outer engagement region and a second set of teeth associated with the inner engagement region.

An adjustable dual-range wrench including an elongate handle and a fixed jaw carried by the handle. The fixed jaw includes multiple teeth disposed linearly along the jaw. A hook jaw is pivotably coupled to the handle opposite the fixed jaw. A toothed lobe is adjustably positioned along the fixed jaw between an outer engagement region sized to engage a first range of sizes and an inner engagement region sized to engage a second range of sizes. The hook jaw comprises a first set of teeth associated with the outer engagement region and a second set of teeth associated with the inner engagement region.

A reciprocating wrench for quick combining fastener includes a main body, a claw, and an elastic positioning device therebetween. The main body includes a concavely-shaped first jaw opening, which has a pivot end at an end thereof. The claw includes a concavely-shaped second jaw opening, which has a pivotal combination portion at an end thereof. The pivotal combination portion is pivotally connected with the pivot end, such that the claw and the main body pivotally move with respect to each other. The elastic positioning device allows the claw to optionally rotate toward a closing direction or remain in the opening status. Therefore, the claw is able to remain in the opening status for combining the fastener.

A reciprocating wrench for quick combining fastener includes a main body, a claw, and an elastic positioning device therebetween. The main body includes a concavely-shaped first jaw opening, which has a pivot end at an end thereof. The claw includes a concavely-shaped second jaw opening, which has a pivotal combination portion at an end thereof. The pivotal combination portion is pivotally connected with the pivot end, such that the claw and the main body pivotally move with respect to each other. The elastic positioning device allows the claw to optionally rotate toward a closing direction or remain in the opening status. Therefore, the claw is able to remain in the opening status for combining the fastener.

Adjustable-size jaw sub-assemblies, jaw assemblies made from such sub-assemblies, and tools, particularly hand tools, made using such jaw assemblies. A plurality of jaws are connected to a base ring by pivot pins. Cam follower recess can be defined at positions of the inner perimeter of the base ring, and between opposing faces of the base ring. In the jaw assemblies, an actuator, such as a cover plate, covers at least a portion of one of opposing faces of the base ring, and one or more bridges connect the jaws to the actuator. Movement of the base ring relative to the actuator causes the jaws to pivot about the pivot pin axes, with the jaws moving in concert with each other thereby to reduce or expand the size of a work opening defined by the jaws.