Abstract: A forestry machine includes a ground propulsion apparatus, a chassis supported by the ground propulsion apparatus, a cab, an engine and a work implement. The chassis includes a front chassis portion and a rear chassis portion. The front chassis portion includes an upper portion and a lower portion. The rear chassis portion has a wood basket supported thereon. The cab is rotatably supported on the front chassis portion by a rotatable connection about a cab rotation axis to be selectively rotated 360 degrees. The engine is integrated into the front chassis portion. At least a part of the engine is disposed below an upper most surface of the upper portion. The work implement is movably attached to the cab. The work implement includes a boom movably attached to the cab, an arm movably attached to the boom, and a work tool attached to the arm.

Abstract: The rotating barbecue grill comprises a trailer, a pedestal, an elevated platform, a supporting structure, and a plurality of grills. The trailer is a towed vehicle. The pedestal, the elevated platform, the supporting structure, and the plurality of grills mount on the trailer. The trailer is configured to be towed by a vehicle. The pedestal attaches the elevated platform to the trailer such that the elevated platform rotates relative to the pedestal and the trailer. The supporting structure attaches the plurality of grills to the elevated platform such that the plurality of grills are elevated above the trailer. The supporting structure attaches the plurality of grills to the elevated platform such that the plurality of grills rotate relative to the pedestal and the trailer. Each of the plurality of grills are enclosed metal structures used to cook food.

Abstract: A crane includes a crane pillar supported rotatably about an axis, and a radial bearing for supporting the rotatable crane pillar in a crane base. The radial bearing is lower in an installation position of the crane pillar, and an upper radial bearing likewise supports the crane pillar in the crane base. The upper radial bearing is spaced apart at a distance from the lower radial bearing along the axis. At least one chamber can be filled with oil and is provided for lubricating the upper radial bearing. A drive unit is provided for the crane pillar, and the drive unit drives the crane pillar between the upper radial bearing and the lower radial bearing. A driven region on the crane pillar is lubricated with oil by the chamber that can be filled with oil.

Abstract: An excavator machine includes an undercarriage assembly including a drive assembly, and a carriage assembly rotatably coupled to the undercarriage assembly and including an operator cab positioned at a front of the carriage assembly. The excavator machine also includes a boom assembly. The boom assembly is coupled to the carriage assembly via two branches, and the branches are coupled to the carriage assembly on opposing sides of the operator cab.

Abstract: An upper turning body mounted on a lower body for a crane includes a turning frame mounted on the lower body to turn freely and a boom provided to the turning frame to be raised and lowered freely. The turning frame includes a pair of attachment brackets to which a base end section of the boom is attached such that the boom is free to be raised and lowered, and a main frame to which the pair of attachment brackets are provided with an interval in the left-right direction of the upper turning body. The dimension of the main frame in the front-rear direction of the upper turning body orthogonal to the left-right direction is smaller than the dimension of the main frame in the left-right direction.

Abstract: A line guidance device (40) is provided for use with a confined space entry/retrieval hoist and fall protection anchorage system (10) and includes a line guide (46) that guides a line from an extend/retract line device (22) past another extend/retract line device (20) with both devices (20, 22) mounted on a backside (24) of a mast (12) of the system (10).

Abstract: A pitch bearing assembly for a wind turbine may include an outer race and an inner race rotatable relative to the outer race. The inner race may define an inner circumference and may include a plurality of gear teeth around the inner circumference. The inner race may also include a circumferential flange extending at least partially around the inner circumference. In addition, the pitch bearing assembly may include a stiffener coupled to the circumferential flange.

Abstract: Wind turbine auxiliary drive system comprising a motor, a drive pinion, a bearing and a lubrication system, the bearing comprising an outer bearing ring, an inner bearing ring and, between these two bearing rings, one or more rows of rolling elements which allow both bearing rings to rotate relative to each other, the inner bearing ring having an inner side comprising a gear which meshes with the drive pinion, wherein a height of the gear in an axial direction is smaller than the height of the inner bearing ring such that a gearless portion is defined, and wherein at least one lubricant inlet and/or at least one lubricant outlet is arranged on said gearless portion.

Abstract: The present invention relates to a crane, in particular a tower crane, with a boom rotatable about an upright slewing gear axis and an out-of-service brake which permits and slows down the rotary movements of the boom in the out-of-service condition. According to the invention, the out-of-service brake is formed to operate in a rotational-speed-dependent manner such that with a greater rotational speed of the crane the applied braking torque is greater than with a smaller rotational speed of the crane.

Abstract: A crane includes i) a lower structure comprising ground engaging members ii) an upper structure rotatably connected to the lower structure such that the upper structure can swing with respect to the lower structure, wherein one of the lower structure and upper structure comprises a first structure having a ring gear having teeth on a surface thereof, and the other of the lower structure and upper structure comprises a second structure; and iii) a boom pivotally mounted on the upper structure. The crane further includes a drive system comprising at least two pinion gears mounted on a common frame and in driving contact with the ring gear teeth; and a link connecting the frame to the second structure with two pivot axes between the frame and the second structure.

Abstract: The present disclosure relates to a hydraulic braking apparatus for a crane drive for carrying out crane work, in particular a slewing gear, having at least one hydraulic stopping brake for braking the drive movement of the crane drive in an emergency situation, wherein at least one pressure regulation valve is provided for controlling at least one stopping brake to ensure a time-delayed braking torque build-up.

Abstract: A slewing actuator system for rotating a boom structure comprises a cylindrical support member having lower and upper ends; a drive mounting member; gearing means comprising a gear assembly and at least one gear drive fixable to the drive mounting member and operatively connected to the gear assembly; and a boom support means to releasably secure the boom structure and operatively connectable to the gearing means. In an operating position, the boom support means is mounted proximate the upper end of the cylindrical support member and is rotatable about a substantially vertical axis; the gear assembly is substantially horizontal; and the gearing means imparts rotational movement to the boom support means. The system can include a pedestal surrounding at least part of the cylindrical support member, which can be a tube or kingpin. The compact modular system can be secured to various surfaces including ship decks and land surfaces.

Abstract: The crane includes a rotating part composed of a jib and of a counterjib, and a mechanism for slewing the rotating part that has at least one geared motor unit with a motor and reduction gear, and an internal main brake which is deactivated when the crane is placed out of service, in order to allow the rotating part to slew freely according to the direction of the wind. The geared motor unit also includes an internal auxiliary brake which is interposed between the motor and the reduction gear and which is activated when the crane is placed out of service in order to exert on the rotating part a braking torque which avoids uncontrolled rotation of said part when placed in weathervaning mode. The auxiliary brake can be designed to exert an adjustable braking torque.

Abstract: A slewing actuator system for rotating a boom structure comprises a cylindrical support member having lower and upper ends; a drive mounting member; gearing means comprising a gear assembly and at least one gear drive fixable to the drive mounting member and operatively connected to the gear assembly; and a boom support means to releasably secure the boom structure and operatively connectable to the gearing means. In an operating position, the boom support means is mounted proximate the upper end of the cylindrical support member and is rotatable about a substantially vertical axis; the gear assembly is substantially horizontal; and the gearing means imparts rotational movement to the boom support means. The system can include a pedestal surrounding at least part of the cylindrical support member, which can be a tube or kingpin. The compact modular system can be secured to various surfaces including ship decks and land surfaces.

Abstract: A swing mechanism for a construction machine is provided with a center frame 3 having a pinion insertion hole 3c, an inner race having an internal gear and mounted on a side of an undercarriage, an outer race 1b rotatably arranged surrounding the inner race and provided with the center frame secured thereon by bolts 8a, a pinion maintained in meshing engagement with the internal gear of the inner race, and a pinion drive device. A pin fit-in hole 3d arranged in the center frame 3 such that a knock pin 6 fixed on the outer race 1b is fitted in the pin fit-in hole to position the center frame 3. To arrange the pin fit-in hole 3d in the center frame 3, a pin fit-in hole portion 20 through which the pin fit-in hole 3d is formed is locally arranged such that the pin fit-in hole portion 20 extends toward the pinion insertion hole 3c to have a center of the pin fit-in hole 3d located on a center connection line S.

Abstract: A crane includes i) a lower structure comprising ground engaging members ii) an upper structure rotatably connected to the lower structure such that the upper structure can swing with respect to the lower structure, wherein one of the lower structure and upper structure comprises a first structure having a ring gear having teeth on a surface thereof, and the other of the lower structure and upper structure comprises a second structure; and iii) a boom pivotally mounted on the upper structure. The crane further includes a drive system comprising at least two pinion gears mounted on a common frame and in driving contact with the ring gear teeth; and a link connecting the frame to the second structure with two pivot axes between the frame and the second structure.

Abstract: The invention relates to a device dedicated for slewing a crane column, which device comprises a fastenable crane base formed by a house which is open at the top and at the bottom and in which a lower tubular part of the crane column is rotatably journalled by means of a number of bearings, which have the abilities of absorbing the bending moment as well as the axial and-/or transversal forces. A power source is connected to the crane column via a power slewing in order to provide for a powered rotation of the crane column around a vertical axis of rotation. Characterizing for the invention is that the power transmission comprises an eccentric gear, which is integrated with the house by being seated in an annular space between the outside of the crane column and the inside of the house.

Abstract: A swing drive assembly for use with a mining shovel having a frame rotatable relative to a base, wherein the swing drive assembly is fixed to the frame and engages a ring gear fixed to the base to rotatably drive the mining shovel frame relative to the mining shovel base. The assembly includes a swing girder having a top wall and bottom wall joined by a back wall. At least one strut having a top end extends upwardly from the top wall, and an attachment point is proximal said strut top end for fixing the swing drive assembly to the frame. At least one attachment point is proximal one end of the top wall, and at least one attachment point is proximal an opposing end of the top wall, wherein the girder is fixable to a mining shovel frame at each of the attachment points. Preferably, each attachment point is fixed to the mining shovel frame with at least one bolt. Most preferably, the swing girder is mounted to the frame, and hangs below the frame to engage the ring gear.

Abstract: The foregoing invention concerns a rotary crane, especially an offshore crane of the king post type. The rotary crane has a pylon that can be permanently anchored on a floor plate, platform, or similar equipment, a turntable mounted to revolve on the longitudinal axis of the pylon, and rotating gear for rotating the turntable on the pylon, the rotating gear having a ring gear positioned on the pylon and a pinion drive that is connected with the turntable and meshes with the ring gear. According to the invention, the pinion drive is mounted on the turntable so that it can move radially relative to the ring gear, and is linked with the ring gear by means of coupling equipment. Tipping movements of the turntable relative to the pylon as a consequence of support clearance can thereby be equalized, and damage to the rotating gear can be prevented. Preferably the ring gear is multi-sectional and consists of several toothed segments attached to the pylon in such manner that they can be detached.

Abstract: A device has lift arms (42) with links (46,46D) connected to ends of a loadspreader (40) or the links (46,46D) are swivelly connected to the lift arms (42) and aligned to hook special containers (20D). The lift arms (42) are pivotally connected to a hub (44,44B) to swing vertically. Each hub is mounted to rotate on a vertical support shaft (38) central between the ends of the loadspreader (40) or hooking and lifting links (46,46D) for each end of a load. A hydraulic cylinder (48) or ropes (168) connects each lift arm to its hub to lift and lower the arms (42) together to lift and lower the loadspreader (40) substantially level or oppositely to end dump special containers. The hubs (44,44B) can be rotated relatively horizontally to move the loadspreader (40) sidewise parallel and/or turn it to align a load.

Abstract: An excavator undercarriage frame is made to reduce the amount of machining necessary for supporting a swing bearing and ring gear on which an upper swing platform including the cab and operator's platform are mounted. The frame is made in two separate frame sections having top plates and formed peripheral skirts that nest together to form a planar support on which the base ring of a swing bearing and ring gear are mounted. The frame section plates are thin enough so that they will flex to conform to the base ring of the swing bearing, so it is not necessary to provide a machined surface for the swing bearing. The frame sections are welded together only around the peripheral edges and skirts, so that the distortion in the plates is substantially eliminated.

Abstract: A side load sensor is provided for sensing the longitudinal load on a rotary worm which is used to rotate a turret on a utility vehicle and wherein a boom is mounted on the rotatable turret. The load sensor includes a gear housing mounted on the turret for supporting a worm shaft for rotation about a horizontal axis, the worm being disposed centrally on the worm shaft. The bearing housing also includes a pair of spaced gear mounts for supporting the ends of the worm shaft and a worm gear disposed for rotation around a vertical axis. A motor is provided for rotating the worm shaft, the worm being arranged in driving relation with the worm gear. A sleeve is mounted at each end of the worm shaft for movement with the worm shaft in response to longitudinal forces transferred back from the worm gear to the worm.

Abstract: A pinion gear rotatively connected to a drive motor is radially movable relative to a swing gear of a work machine by an eccentric member to adjust the backlash between the pinion and swing gears. A supporting bracket is supportingly connected to a second end portion of the pinion gear and maintains the second end of the pinion gear from radial movement. An adjustable stop engages the supporting bracket and further prevents radial movement of the pinion gear.

Abstract: A swing lock mechanism for machines having an upper works rotatably mounted on a lower works by a swing bearing is connected to the drive shaft of a swing bearing drive assembly and comprises a swing lock plate, an annular pin support, and a plurality of locking pins. The swing lock plate is affixed to the drive shaft and has at least one hole disposed about the axis of the drive shaft. The annular pin support is fixed against rotation relative to the drive shaft is disposed about the axis of the drive shaft. The locking pins are supported by the annular pin support and are also disposed about the axis of the drive shaft. The locking pins are arranged in such a manner so as at least one pin may engage a hole in the swing lock plate irrespective of the angular orientation of the swing lock plate relative to the annular pin support.

Abstract: The large bale handling apparatus comprises a wheeled flat bed trailer, and a rotatable articulating arm with a bale lifting mechanism rotatably and pivotally attached thereto. The bale lifting mechanism may be a lifting fork attachment for lifting large round bales or a rectangular bale attachment for lifting large rectangular bales. The articulating arm includes a rotatable substantially vertical mast portion and a boom portion. Two hydraulic cylinders enable the boom to raise and lower as well as extend and retract. Therefore, because the articulating arm, with the bale lifting mechanism attached thereto, is rotatable 360 degrees about a vertical axis and can raise or lower and extend and retract, the arm can pick up all the large bales around the trailer within its reach and stack them onto the trailer. When unloading the bales from the trailer, the articulating arm can drop the bales directly into a feeding bunk or stack them on the ground for later use.

Abstract: An invalid lift and transport apparatus for safely lifting and transporting bedridden or wheelchair bound individuals with a minimum of effort and assistance is disclosed. The apparatus includes a movable mast assembly powered by a remote hydraulic pump. The mast assembly has an upright mast rotatable about a substantially vertical axis and a hydraulically extensible boom, for supporting an invalid carrying sling, pivotally joined thereto. A lift cylinder, joining the lower portion of the mast with the boom, is provided for raising and lowering the boom. A hand-held controller permits the invalid individual or attendant to extend, retract, raise, and lower the boom by selectively actuating the hydraulic components with the touch of a button. The mast may be similarly rotated. In operation, the sling may be readily moved to position an invalid seated therein to practically any position within the reach of the boom with a minimum of physical effort.

Abstract: A scaffold mounted hoist (20) is provided which mounts with an adapter (30) on a pin (91) extended upward from the scaffold. An electric motor driven transmission (42) causes a standard (40) to rotate relative to the adapter. A cable from an electric winch (50) on the standard is reeved through a pulley (48) on a boom (44) extending from the standard. The transmission and winch motors respond to receivers (56) in the hoist. Thus a load (28) attached to the cable can be lifted, lowered and swung circumferentially through commands from a hand held transmitter (24). An electric eye system (64) stops the load adjacent the boom. Timers (252, 253) stop the load when it nears, respectively, the ground and the scaffold floor (34).

Abstract: The present invention comprises a hydraulic sensing means to be used in connection with a worm/worm wheel gear arrangement for articulating a boom mounted on a vehicle. A hydraulic chamber on each side of the worm is formed by a bearing retainer and a piston. A worm thrust in the direction of either hydraulic chamber increases the fluid pressure in that particular chamber, which causes the fluid pressure in a closed hydraulic circuit to increase. The pressure increase is sensed by a fluid pressure gauge which sends a signal and/or terminates input power to the worm if the increase in fluid pressure is above a predetermined pressure.

Abstract: In an excavating machine having a ring gear and a rotating frame including a top and bottom plate, an assembly for rotating the frame relative to the ring gear includes a plurality of drive units, each of the drive units is mounted to the bottom plate and is disposed between the top and bottom plates of the rotating frame. Each of the drive units further includes a pinion extending below the bottom plate and adjacent to the ring gear for driving engagement with the ring gear.

Abstract: A frame for an excavating machine having a ring gear wherein the frame is rotated with respect to the ring gear includes top and bottom plates. A plurality of compartments are circularly disposed within the frame and between the plates. A plurality of drive units are provided wherein each drive unit is mounted within one of the plurality of compartments below the top plate. The drive units extend below the bottom plate for driving engagement with the ring gear. A plurality of radially disposed bulkheads are located within the frame between the top and bottom plates and between the plurality of compartments.

Abstract: An excavator arm with basic boom 12, intermediate boom 14 and shovel stem 16 with digging implement is connected to a support part 86 which can be driven directly or indirectly into rotation about a vertical axis 84. In order to dig trenches with vertical walls outside the longitudinal axis of the vehicle and to achieve an advantageous transport position, the intermediate boom 14 consists of a front part 14a, a rear part 14b and a common rotary joint 20, the most advantageous transport position being achieved by rotating by 180.degree. the front part 14a, about the axis of rotation 22 set vertically, from the extended operational position relative to the rear part 14b.

Abstract: An antibacklash gear drive system including an internal ring gear (46) engaged with a pinion gear (76) powered by a motor drive assembly (48). The motor drive assembly together with the pinion gear is mounted on an eccentric plate (58) so that the rotational axis (72) of the pinion gear is offset from the central axis (66) of the eccentric plate (58). The eccentric plate is adapted to be rotated about its central axis (66) by an adjustment mechanism (86) whereby the distance between the rotational axis (72) of the pinion gear and the rotational axis of the ring gear is varied to increase or decrease, as desired, the engagement of the teeth of the ring and pinion gears thereby to increase or decrease the backlash between the two gears.

Abstract: A swing reduction gear assembly for a swing device which prevents admission of grease into the same and in which the pressing force of grease squeezed out from between mutually meshing teeth of a pinion and an internal gear wheel thereof is reduced. The swing reduction gear assembly comprises a lower bearing for supporting an output shaft for rotation on a casing, a sealing collar fitted on an outer periphery of the output shaft and located above a pinion integrated with the output shaft, a retainer mounted on the casing below the lower bearing, and an oil seal fitted around the retainer and normally held in engagement with an outer periphery of the sealing collar. The oil seal has a lower face side lip portion formed thereon, and a disk-shaped plate is mounted on an outer periphery of the sealing collar such that the lower face side lip portion of the oil seal is normally held in contact with an upper face of the disk-shaped plate to prevent oil from entering the swing reduction gear drive.

Abstract: An earth-working machine such as an excavator includes a mobile chassis having a support base on which an internal or external gear is fixedly mounted. A slider ring is mounted on the underside of a turntable with a hydraulic motor mounted thereon and having a drive pinion held in mesh with the internal or external gear. A carriage supporting an excavating mechanism has an internal or external gear fixed to the underside of the carriage and rotatably mounted on an annular holder fixed to the turntable. An intermediate shaft is rotatably journalled in at least one bearing mounted on the turntable and has a pair of pinions fixed thereto and held in mesh with the gears, respectively. Alternatively, an intermediate shaft may have a pinion held in driving mesh with the gear secured to the carriage and driven by another hydraulic motor mounted on the turntable through sprockets and a chain trained therearound.

Abstract: A revolving block having an inclination correcting mechanism housed therein is adapted to revolvably support a working implement, such as a ladder or boom, mounted on a high place working vehicle.

Abstract: A derrick crane has a jib pivoted by way of a horizontal pivot to the movable member of a bearing device supported by a vertically extending mast and includes devices for raising and lowering a load, luffing the jib and slewing the jib about the mast. The bearing device comprises a single ring of free running balls which are a running fit in part circular registering grooves formed in inner and outer bearing rings. The bearing device is located on the mast in such a position that the line of thrust of the jib passes within the pitch circle diameter of the ring of balls.

Abstract: A revolving block with an inclination correcting mechanism housed therein for a high place working vehicle having a working implement such as a revolving ladder or boom mounted thereon.

Abstract: A pedestal crane mounting system utilizes a spherical thrust bearing, for vertically supporting the crane gantry on the pedestal, and a spherical radial bearing, for eliminating radial loading on the thrust bearing. The upper race of the spherical thrust bearing and the outer race of the spherical radial bearing have common points of origin for the generatrices defining the race guide surfaces. The thrust and radial bearings are carried in a cartridge which mounts in a yoke connectable to a crane gantry by support pins at first and second points of attachment. Disposition of the bearing cartridge in the yoke is such that the centerline of the support pins coincides with the centerline of the spherical radial bearing. The bearing cartridge is fitted onto a vertical shaft fixed in the upper end of the pedestal.

Abstract: A rotary load handling device including a frame structure having an arcuate roller rail mounted on the upper surface, a roller ring having a set of concentric ring members and a plurality of double flanged wheels connected therebetween disposed on the arcuate roller rail, and an upper arcuate roller rail secured to the underside of a plate having a load handling unit mounted on the upperside of the plate whereby the upper arcuate roller rail is disposed on the roller ring and rotatable relative to the frame structure.

Abstract: A method and apparatus for controlling the horizontal motion of a double articulated crane comprises determining the angle about a common axis between a base member pivotally mounted on a crane post and a head member carrying a load application point on an outer end thereof. The angle can vary from 0.degree. to 360.degree.. A desired movement direction value is then set on a direction selector movable on a direction indicator. The value corresponds to a target position for the load application point. The desired movement direction value is adjusted by small increments to reach the target however. The desired movement direction value is broken up into two components, one aligned with the axis of the head and the other aligned with a perpendicular axis. The values of these two compartments are calculated as a function of the sin or cos of an angle of misalignment between the longitudinal axis and the direction of the selector.

Abstract: The engine of a mobile power crane-excavator is utilized as a source of heat to soften grease so that it may be applied to the open gears on the machine, even at low ambient temperatures. Heated water from the vehicle engine is caused to flow in heat transfer relationship with cold grease through a multi-conductor hose to provide a pre-heat of the grease. The heated water is caused to heat a metallic nozzle through which the pre-heated grease flows, thus creating a final heating of the grease up to the desired temperature. Air supplied through the nozzle causes the grease to be sprayed onto the gear. The remote supply tank for the grease may also be pre-heated with hot water from the vehicle engine.

Abstract: A lower works construction for a machine such as a large mining shovel or dragline having a center journal and an upper frame rotatable about a vertical axis of its center journal generally consisting of a lower frame section having a housing for the center journal, a plurality of leg sections mounted on the lower frame section and projecting laterally therefrom and a pair of propelling unit support frame sections, the lower frame section having a plurality of radially projecting bulkheads emanating from the center journal housing, the leg sections having laterally projecting bulkheads disposed in registry with the radially projecting bulkheads of the lower frame section and the support frame sections having laterally projecting bulkheads disposed in registry with the laterally projecting bulkheads of the leg sections whereby vertical and radial loads applied to the upper frame and imposed on the lower frame section will be transferred through the lower frame section to the support frame sections along the bu