Abstract: The invention relates to an assembly (1) for forming a mast for guiding a drill drive in an HDD machine. The assembly comprises a mast body (10) with a generally U-shaped cross-section, a mast cover with a recessed surface (21), a set of two or more racks (30), first connecting means (24) for connecting the racks releasably to the mast cover and second connecting means (44) for connecting the racks releasably to the mast body. The racks together with the mast body and the mast cover in assembled state form a mast with a substantially closed contour.

Abstract: The present application discloses wheel engraving equipment, which includes a lower lifting system, lower flange engraving systems, inner rim engraving systems, a wheel positioning and clamping system, an upper lifting and rotating system, a synchronous clamping and rotating system and the like.

Abstract: The present disclosure provides a well service rig for tripping rods and tubulars. The well service rig includes a service rig base unit, a mast coupled to the well service rig base unit movable between a folded position and an upright position, a vertical guide mounted to the mast, and a traveling block system coupled to the vertical guide at a first end and configured to travel up and down at least a portion of a length of the vertical guide. The traveling block system is couplable to a rod, a tubular, or both at a second end.

Abstract: A remote controlled work robot including a remote controlled actuator and a support device therefor. The remote controlled actuator includes a spindle guide section of an elongated configuration, a distal end member fitted to a distal end of the spindle guide section through a distal end member coupling structure for alteration in attitude, and a drive unit housing connected with a base end of the spindle guide section. The distal end member rotatably supports a spindle for holding a tool. The support device includes a single degree-of-freedom system, in which the remote controlled actuator has a degree of freedom in one direction, or a multi-degrees-of-freedom system, in which the remote controlled actuator has a two or more degrees of freedom relative to a base on which the support device is installed. A drive source and is also provided for driving the degree-of-freedom system.

Abstract: A rotation device (12) for rotation of equipment (13) fastened at the region of a distal end of a boom (9,11), which has a general longitudinal axis, and which is part of a boom device (3) which is fastenable to a carrier (2) for a mining or constructions work rig, wherein the rotation device includes a first rotation unit (R1) arranged to rotate the equipment around an axis (A1) which is essentially parallel to the longitudinal axis of the boom and a second rotation unit (R2) which is arranged to rotate the equipment around an axis (A2), which forms an angle with the longitudinal axis of the boom. The rotation units (R1, R2) are fastened to an angle unit (12?), which is included in the rotation device (12) and has rotational axes (A1, 21; A2,22) extending at an angle with respect to each other, and are connectable to the boom (9,11) as well as to said equipment (13). The invention also concerns a mining or constructions work rig and a boom.

Abstract: A hammer assembly (1) for breaking, levering and raking material, the hammer assembly includes a hammer (1) and an articulated control linkage (3). The hammer includes: a movable mass capable movement along an impact axis (14), an elongated 5 tool (23) having a longitudinal axis substantially parallel or coaxial with the impact axis(4), a primary pivot (6) attachment point for attaching the hammer (1) to a distal end of an operating arm (2) attached to the carrier for pivotal movement of the hammer (1) about a primary axis (6) orthogonal to the impact axis (14). The control linkage (3) includes first (4) and second linkss (5) for effecting pivotal movement of the hammer (1) about the primary axis (6) in response to movement from a drive attached to the operating arm (2).

Abstract: A method includes determining, at a first requesting component of an integrated circuit device, a first key value based on a first set of one or more bits of a first address associated with a first access request of the first requesting component. The method further includes transmitting the first key value from the first requesting component to a resource component of the integrated circuit device. The method also includes determining, at the resource component, an authorization of the first access request based on the first key value and a second set of one or more bits of the first address.

Abstract: A rotating device for rotating an apparatus arranged at the outer end of a boom, which boom has a longitudinal axis, the rotating device comprising a first torque motor unit arranged to rotate the apparatus substantially around an axis in the direction of the longitudinal axis of the boom, and a second torque motor unit arranged to rotate the apparatus around an axis that is at an angular position relative to the longitudinal axis of the boom, whereby the first and the second torque motor unit are arranged side by side relative to each other when seen in the direction of the longitudinal axis of the boom. The torque motor units are arranged in a body part common to both torque motor units.

Abstract: A power assist lever arm attachment includes a drill, an L-shaped drilling head carried by the drill, an arm actuation cylinder carried by the drill, an arm piston extendable from the arm actuation cylinder, a lever arm pivotally carried by the arm piston and the drilling head and a bracket-engaging arm extending from the lever arm.

Abstract: The invention relates to a method for correcting positioning errors in rock drilling, and a rock drilling equipment. Deviation of the boom position from the theoretical position is measured as a function of the position of at least one boom joint, the measured deviations are stored in the memory of the drilling rig, and when the boom is positioned to the drilling position, its position is corrected on the basis of the stored deviation. The drilling equipment includes a memory for storing the deviations between the true position of the boom and the theoretical position calculated on the basis of the joint sensor values, and a calculating device for correcting the boom position on the basis of the deviations stored in the memory of the drilling rig.

Abstract: A lifting device such as a mobile crane having a main body and a boom, such as a lattice boom, for supporting a pile lead for, e.g., pile driving or continuous flight auger drilling, and a method of using same. A hydraulically operated mechanical spotter arm may be attached between the device body and the pile lead. Electronic position sensors on the spotter arm may be used to measure angular relationships between the pile lead and the spotter arm. Position sensors on a boom box on the boom may also be used. When the pile lead is swung, information from the sensors may be used by an electronic control system to automatically maintain the pile lead in a desirable position, limiting torque induced in the boom. The boom box position sensors may be used to counter-steer the spotter arm to further limit torque. The boom box may also be fitted with rubber springs to permit controlled pile lead deflection while limiting load transmitted to the boom.

Abstract: A boring rig (14) for underground boring for excavating purposes and including a substructure (21, 22), a propulsion device, a stabilizing device (31, 32, 35, 36, 37, 38, 39, 42), and a boring unit (20) having a cutter head (29) and a rotation and forcing device (26), in which the rig has a first direction of general travel and two sideways directions, and in which the boring unit (20) is pivotally attached to the substructure for pivotal movement of the boring unit into an operating direction. The stabilizing device includes horizontal (31, 32) and vertical (35, 36, 37, 38, 39) stabilizing elements that are attached to the substructure (21, 22) in order, in active positions, to be pressed against an adjacent rock face so as to transmit forces from the boring unit (20), that are occurring during boring, to the rock face.

Abstract: A post driving implement for use with a vehicle, such as a tractor or a skid loader, is disclosed. The post driving implement is comprised of a hammer, a hammer channel, and a hammer cylinder. The hammer travels longitudinally within the hammer channel and is lifted by the hammer cylinder mounted to a closed end of the hammer channel. The hammer cylinder and its associated plumbing is of sufficient size to function as a hydraulic reservoir for the post driving implement, thus eliminating the need for a third hydraulic line to the reservoir on the vehicle and to avoiding need for alteration of the vehicle's reservoir. The post driving implement of the present invention may also include a back plate for mounting the implement to a vehicle. Additionally, the post driving implement may include adjustment mechanisms to vary the positional and angular relationship between the vehicle and the implement.

Abstract: It is an object of the present invention to overcome various drawbacks of a conventional oil pulse wrench by using an electric motor, to reduce a reaction force and to fasten a screw with high precision. To achieve the object, the invention provides a control method of a screw fastening apparatus using an electric motor as a rotation driving source, the method comprising the steps of; intermittently supplying current pulse DP to the motor, detecting an actual torque at predetermined time intervals, maintaining a current value when a detected torque value does not exceed a maximum value of past detected torques value and increasing the current value by a predetermined amount when the detected torque value exceeds the maximum value of the past detected torque value, and stopping the supply of the current pulse DP when the detected torque value reaches a target value TQJ.

Abstract: A doweling hole drilling machine includes a vehicle such as a tractor having a frame pivotally mounted to the side of the tractor. The frame is moveable around an axis parallel to the longitudinal axis of the vehicle from a first horizontal orientation to a second vertical orientation, and the raising or lowering of the frame is powered by hydraulic cylinders. Positioned on the frame is a plurality of parallel mounted spaced drilling machines, each of which is positioned for drilling a hole perpendicular to the longitudinal axis of the vehicle. Each of the drilling machines is mounted on a drive assembly for moving the machine axially to thereby force a drill bit in the machine to drill a hole. The frame is laterally adjustable in a horizontal direction perpendicular to the longitudinal axis of the tractor and the lateral adjustment is hydraulically powered. The frame is also horizontally adjustable to position the drills to bore at the desired depth into a slab of concrete.

Abstract: A multi-purpose drilling rig has a movable pipe support cradle which moves horizontally to transfer drill pipe from a storage area to the well being drilled, and vice versa. The cradle travels along a roof platform supported by load-bearing hydraulic lifting rams. Raising or lowering the lifting rams raises or lowers the roof platform, along with the drill pipe suspended from the cradle. Structural towers stabilize the lifting rams against buckling and lateral loads. Supplementary lifting capacity is provided cradle-mounted roof rams having pistons which may extend downward from the cradle, with the drill pipe suspended from a yoke interconnecting the roof ram pistons. For offshore drilling, a control system senses fluctuations in rig elevation due to wave action, and automatically adjusts extends or retracts the rams as required to maintain constant load on the drill bit. Also disclosed is a method of drilling which utilizes vertical and lateral movement of the cradle and top drive.

Abstract: A doweling hole drilling machine includes a vehicle such as a tractor having a frame pivotally mounted to the side of the tractor. The frame is moveable around an axis parallel to the longitudinal axis of the vehicle from a first horizontal orientation to a second vertical orientation, and the raising or lowering of the frame is powered by hydraulic cylinders. Positioned on the frame are a plurality of parallel mounted spaced drilling machines, each of which is positioned for drilling a hole perpendicular to the longitudinal axis of the vehicle. Each of the drilling machines is mounted on a drive assembly for moving the machine axially to thereby force a drill bit in the machine to drill a hole. The frame is also laterally adjustable in a horizontal direction perpendicular to the longitudinal axis of the tractor and the lateral adjustment is also hydraulically powered.

Abstract: A multi-purpose drilling rig has a movable pipe support cradle which moves horizontally to transfer drill pipe from a storage area to the well being drilled, and vice versa. The cradle travels along a roof platform supported by load-bearing hydraulic lifting rams. Raising or lowering the lifting rams raises or lowers the roof platform, along with the drill pipe suspended from the cradle. Structural towers stabilize the lifting rams against buckling and lateral loads. Supplementary lifting capacity is provided cradle-mounted roof rams having pistons which may extend downward from the cradle, with the drill pipe suspended from a yoke interconnecting the roof ram pistons. For offshore drilling, a control system senses fluctuations in rig elevation due to wave action, and automatically adjusts extends or retracts the rams as required to maintain constant load on the drill bit. Also disclosed is a method of drilling which utilizes vertical and lateral movement of the cradle and top drive.

Abstract: An improved feed shell positioning mechanism for a rock drilling machine, having a boom, a feed shell support pivotably mounted with respect to the boom and supporting a feed shell having a feed shell axis, a roll actuator interposed between the boom and the feed shell support, and a rock drill having a rock drill axis. The rock drill axis and the feed shell axis are parallel and define a reference plane. The improvement resides in a swivel assembly for attaching the feed shell support to the roll actuator, allowing the feed shell support to swivel between a forward drilling orientation and a sideways drilling orientation. The swivel assembly has a roll actuator securing element, mounted to the roll actuator, and a feed shell support securing element, mounted to the feed shell support, which are pivotably mounted to each other about a swivel pivot axis which is inclined with respect to the reference plane.

Abstract: A doweling hole drilling machine includes a vehicle such as a tractor having a frame pivotally mounted to the side of the tractor. The frame is moveable around an axis parallel to the longitudinal axis of the vehicle from a first horizontal orientation to a second vertical orientation, and the raising or lowering of the frame is powered by hydraulic cylinders. Positioned on the frame are a plurality of parallel mounted spaced drilling machines, each of which is positioned for drilling a hole perpendicular to the longitudinal axis of the vehicle. Each of the drilling machines is mounted on a drive assembly for moving the machine axially to thereby force a drill bit in the machine to drill a hole. The frame is also laterally adjustable in a horizontal direction perpendicular to the longitudinal axis of the tractor and the lateral adjustment is also hydraulically powered.

Abstract: A method of aligning the feeding beam (6) of a rock drilling equipment by gravity-operated sensors (7x, 7y) indicating the inclination of the feeding beam (6). In the method, the angle values (.alpha., .beta.) of the feeding beam (6), indicating by the sensors (7x, 7y) are corrected so that they correspond to the actual angles of inclination of the feeding beam (6). The rock drilling equipment comprises two gravity-operated angle sensors (7x, 7y) measuring inclination in two planes perpendicular to each other. The equipment further comprises a calculator (8) which calculates a difference between the angle value of one angle sensor (7x, 7y) and the actual angle of inclination of the feeding beam (6) in the direction in question on the basis of the angle value obtained by the other angle sensor (7y, 7x) and corrects the value so that it corresponds to the actual inclination of the feeding beam.

Abstract: A mounting bracket for mounting a working device to a boom of a carrier includes a base, flanges for attaching the bracket to the boom, and ears for attaching the working device to the bracket. The ears each define a hole for pivotally coupling the working device thereto for free pivotal movement about a single axis to alleviate the generation of excessive side forces. The bracket further includes stops to limit the free angular movement so that the working device can be oriented at an inclination and so that it may be used to pry pieces of the worked material.