Abstract: A new, useful and compact wheel motor drive arrangement for applications on such construction equipment as scissor lifts and other similar scaffolding equipment where hydraulically driven systems have historically been used to provide power to the wheels to move the equipment is disclosed. An electric motor is mounted to a spindle bracket which is pivotably connected to the frame of the equipment to allow the unit to be pivoted around a vertical axis for steering purposes. A gear reducing planetary gear system is mounted around the drive shaft of the motor is positioned totally within the rotating wheel hub. The output ring gear of the planetary gear system is integrally formed to the interior of the wheel hub so that there is a direct application through the planetary gear system to the wheel hub to provide greater efficiency.

Abstract: There is provided a planetary reduction gear 10 between a gas turbine 1 and a generator 5. The planetary reduction gear includes elastic deformation unit 12 on an output side, and for the elastic deformation unit, a strain energy within an elastic limit is set to be larger than a fluctuation torque energy of the generator of a momentary voltage drop time. The elastic deformation unit 12 includes an elastic member which elastically connects an output shaft 10a of the planetary reduction gear to an outer ring 10b. Thereby, when an excessive torque is generated in the generator by a momentary voltage drop, service interruption, and the like for a short time, it is possible to maintain the operation of a power generation facility, and secure a power supply of an important load, and an installation length is shortened and the facility can be downsized.

Abstract: A planetary gear for mounting on an electromotor is proposed, in which higher efficiency is achieved by positioning a sealing element (22) between a housing (2) and a sun gear shaft (4) on the input side, axially outside a receiving area (16) for the output shaft of the electric motor, in an axial section of the sun gear shaft (4) with an outer reduced diameter compared to the receiving area (16).

Abstract: An epicyclic drive has its planet gears integrated into separately built planet assemblies. Each planet assembly, in addition to its planet gear, includes a pin which extends through the planet gear and an antifriction bearing located between the gear and the pin. The outer raceways for the bearing are machined into the gear, whereas the inner raceways are machined into the pin. The bearing also has rolling elements organized in two rows between the inner and outer raceways. The pins have mounting ends which lie beyond the ends of the planet gear to anchor the planet assembly in a carrier. The planet gear and the pin define lubrication channels adjacent each raceway, permitting a flow of lubricating oil to the rolling elements. The bearing, inasmuch as it is assembled separately, is set with considerable precision, preferably in preload, so the planet gear does not skew with respect to sun and ring gears with which it meshes during operation at the epicyclic drive.

Abstract: A multi-step gearbox has a gearbox housing (1) and a first gear wheel (5) non-rotationally linked with the input shaft (2), a fourth (10) and fifth gear wheel (12) with a mutual fixed connection, a respective second (6) and third gearwheel (8) with a mutual fixed connection and one planetary wheel (15) each rotate about a common planetary axis (B), and an internal-geared wheel (16) is non-rotationally linked with the gearbox housing (1).

Abstract: A planetary carrier supports pinion gears of a planetary gear set via pinion shafts. Each hole in which a pinion shaft is mounted has a shallow hardened wall surface that is hardened by very-high-frequency induction heating and quenching. Therefore, the durability of the pinion shaft-supporting holes of a cold-forged piece or a pressed piece can be improved without thermal strain.

Abstract: A drive assembly for a wind turbine comprises a rotor hub (14), supporting structure such as a turbine nacelle (15), a planetary type gear transmission unit (11) comprising sun (27), planet (25) and ring (24) gears and a planet carrier (28), said ring gear being non-rotatably secured to said supporting structure (15), a main bearing (23) which rotatably supports the rotor hub (14) and planet carrier (28) relative to said ring gear and supporting structure, and said drive assembly comprising two substantially independent force transmission paths for transmission of forces reacting with forces exerted by the wind turbine rotor hub, a first of said force transmission paths acting from the rotor hub (14) via said main bearing (23) to the supporting structure (15) primarily for transmission of overhang load forces and bending moment forces and a second of said force transmission paths acting front the rotor hub (14) via said planet carrier (28) primarily for transmission of rotational forces.

Abstract: An epicyclic drive has its planet gears integrated into separately built planet assemblies. Each planet assembly, in addition to its planet gear, includes a pin which extends through the planet gear and an antifriction bearing located between the gear and the pin. The outer raceways for the bearing are machined into the gear, whereas the inner raceways are machined into the pin. The bearing also has rolling elements organized in two rows between the inner and outer raceways. The pins have mounting ends which lie beyond the ends of the planet gear to anchor the planet assembly in a carrier. The planet gear and the pin define lubrication channels adjacent each raceway, permitting a flow of lubricating oil to the rolling elements. The bearing, inasmuch as it is assembled separately, is set with considerable precision, preferably in preload, so the planet gear does not skew with respect to sun and ring gears with which it meshes during operation at the epicyclic drive.

Abstract: An epicyclic drive has its planet gears integrated into separately built planet assemblies. Each planet assembly, in addition to its planet gear, includes a pin which extends through the planet gear and an antifriction bearing located between the gear and the pin. The outer raceways for the bearing are machined into the gear, whereas the inner raceways are machined into the pin. The bearing also has rolling elements organized in two rows between the inner and outer raceways. The pins have mounting ends which lie beyond the ends of the planet gear to anchor the planet assembly in a carrier. Seals fit into the planet gear and around the pin and retain grease within the bearing and prevent oil that lubricates the teeth of the gears from entering the bearing and deteriorating the grease.

Abstract: The method for precise position assembling a planetary gear unit consisting of a planetary gear, a planet shaft, a bearing, two thrust washers and two guide washers, especially for use in a planetary transmission for an automatic transmission of a motor vehicle consists in that the planetary gear unit is inserted within mean position tolerance, aligned and braced in a tool which tool has two displaceable stamps and two jaws with indented rings which jaws surround the stamps forming a ring and can be displaced independently of the stamps. By closing the tool, the indented rings clamp the guide washers until a constant pressure is exerted against them. The stamps are pressed against the ends of the planet shaft until they are forged.

Abstract: The method for precise position assembling a planetary gear unit consisting of a planetary gear, a planet shaft, a bearing, two thrust washers and two guide washers, especially for use in a planetary transmission for an automatic transmission of a motor vehicle consists in that the planetary gear unit is inserted within mean position tolerance, aligned and braced in a tool which tool has two displaceable stamps and two jaws with indented rings which jaws surround the stamps forming a ring and can be displaced independently of the stamps. By closing the tool, the indented rings clamp the guide washers until a constant pressure is exerted against them. The stamps are pressed against the ends of the planet shaft until they are forged.

Abstract: A planetary gear device includes a bearing member mounted on an inner coupling annular wall surface of a planet carrier to support rotatably a force transmitting member relative to the planet carrier in an accommodating chamber of a mounting frame. A sun wheel member of the force transmitting member meshes with a plurality of planet wheel members which mesh in turn with an inner annular toothed portion of the mounting frame so as to reduce speed of an output shaft of a motor that is coupled with a tubular coupling portion of the force transmitting member. With such an arrangement, accurate alignment of the sun wheel member with the planet carrier can be maintained.

Abstract: A planetary gear transmission has two or more planetary gear sets in the gear train. Each planetary gear set comprises a sun gear mounted on a sun shaft with the sun gear engaging a plurality of planet gears mounted on a planet gear carrier with the plurality of planet gears engaging a ring gear mounted on the transmission housing. Each gear of the planetary gear transmission is a helical cut gear. Sun gears and/or ring gears are mounted for axial movement with respect to the transmission. Thrust imbalances on the sun gears and/or ring gears resulting from uneven loading and the helical cut result in sun gears and/or ring gears moving in the axial direction to eliminate the thrust imbalances and thereby resulting in equal loading or power sharing amongst the planetary gear sets.

Abstract: The planetary gear according to the invention comprises a sun gear (2) connected to a driven central shaft (20), a ring gear (12), a group of first stepped planetary gears (8, 10) and a group of second stepped planetary gears (4, 6). The large step wheels (4) of the second stepped planetary gears engage the sun gear (2), the small step wheels (6) of the second stepped planetary gears simultaneously engage a pair of adjoining large step wheels (8) of the first stepped planetary gears and all small step wheels (10) of the first stepped planetary gears engage the ring gear (12). The gear allows for high transmission ratios having a small size and low inertia moment and offers excellent properties in relation to efficiency and transmission reliability.

Abstract: A planetary gear transmission has two or more planetary gear sets in the gear train. Each planetary gear set comprises a sun gear mounted on a sun shaft with the sun gear engaging a plurality of planet gears mounted on a planet gear carrier with the plurality of planet gears engaging a ring gear mounted on the transmission housing. Each gear of the planetary gear transmission is a helical cut gear. Sun gears and/or ring gears are mounted for axial movement with respect to the transmission. Thrust imbalances on the sun gears and/or ring gears resulting from uneven loading and the helical cut result in sun gears and/or ring gears moving in the axial direction to eliminate the thrust imbalances and thereby resulting in equal loading or power sharing amongst the planetary gear sets.

Abstract: A substantially flat steel ring with a round perimeter and a central aperture has at least two arcuate slots concentric with the round perimeter. The arcuate slots are defined by arcs about the axis of the flat steel ring such that at least a portion of the arcuate slots is in axial alignment with planetary rollers when the planet washer is positioned in a planetary gear set.

Abstract: A differential assembly which includes a differential housing is disclosed. The differential assembly also includes a spider structure positioned within the differential housing. The spider structure has (i) a spider hub and (ii) a spider shaft which extends from the spider hub. The differential assembly further includes a pinion gear positioned around the spider shaft and a fastener secured to the spider shaft. The differential assembly also includes a bearing assembly which directly contacts the spider shaft, wherein the bearing assembly is (i) interposed between the pinion gear and the spider shaft and (ii) interposed between the fastener and the spider hub.

Abstract: A substantially flat, steel ring having an axis, has an axial end face with two parallel chordal grooves disposed symmetrically about a central aperture. A flat end surface between the chordal grooves engages an adjacent planet gear and ends of rollers supporting the planet gear. A portion of the chordal grooves is radially inward of the outer raceway of the rollers, providing a lubricant path between the planet washer and the planet gear.

Abstract: The invention concerns a lifting equipment drive consisting of a drive motor, a brake (6) and a dual-stage planetary transmission (9). Both planetary gear sets (8, 10) have helical gearing. The sun gear (15) of the second planetary gear set (10) has a floating mounting in a hub carrier (17) or a hub (21, 23) via a bearing (16) which takes up axial and radial forces. The suggested set-up reduces the axial installation length. The sun gears (7, 15) of the planetary gear sets (8, 10) can adapt to various load ratios. The helical gearing of the planetary transmission (9) prevents low frequency vibrations which could be transmitted into the lift, particularly for long cable lengths, where they could be detected as a disturbing humming noise.

Abstract: A planet carrier of an automotive automatic transmission includes an annular main body portion disposed around a pinion shaft between the carrier body and the pinion gear. A washer formed of a porous material such that lubricating fluid can flow therethrough to both sides of the washer is disposed around the pinion shaft. Further, a boss portion may be formed at the inner periphery of the washer opening, which portion is inserted between the surface of the pinion shaft and an inner circumference of the pinion gear. A fluid passage is defined according to installation of the washer, between the edge of the washer and the bearings of the pinion gear such that lubricating fluid is retained therein, which fluid flows around the pinion shaft.

Abstract: A planetary gear mechanism includes a planetary carrier and pinions rotatably carried on the planetary carrier through pinion shafts. An annular lubricating oil supply member is mounted on a ring gear supporting member which supports a ring gear on its outer periphery and which is rotatable. The lubricating oil supply member has a plurality of fins formed radially thereon. The lubricating oil received within the lubricating oil supply member while submerged in the lubricating oil is scattered by a centrifugal force and supplied to oil reservoirs defined in the adjacent side of the planetary carrier and then from the oil reservoirs via oil passages in the pinion shafts to the needle bearing which supports the pinions. With the above construction, it is possible to effectively supply the lubricating oil to the pinion shafts of the planetary gear mechanism when the planetary is in a fixed position.

Abstract: A carrier structure for a planetary gear system has a pinion shaft rotatably supporting a pinion gear, a carrier body fixedly supporting the pinion shaft, needles disposed between an internal periphery of the pinion gear and an external periphery of the pinion shaft, a pinon washer disposed between each end face of the pinion gear and the carrier body and mounted on the pinion shaft for supporting thrust load of the pinion gear, and a support portion provided in the pinion washer for supporting the thrust load of the needles. The pinion washer has sliding surfaces mating with the pinion gear and the carrier body, to respectively. At least one of the sliding surfaces is provided with a plain bearing member. When the pinion gear is rotated, the thrust of the needles can be born by the support portion of the pinon washer.

Abstract: A load distributing planetary gear or epicyclic transmission having a sun gear, an annulus gear and a planet wheel carrier supporting a plurality of planet wheels, all of the gears being helical and the planet wheels being simultaneously meshed with the sun gear and the annulus gear. Each planet wheel is mounted on a distal end of a flexible shaft, which is supported by the planet wheel carrier on an opposite end, by a journal which permits swivelling of the planet wheel. Each planet wheel is held in place by a component which is capable of sliding only in a plane extending substantially perpendicular to a plane passing through the axis of rotation of the planet wheel and the axis of rotation of the sun gear. The sliding component is offset axially along these axes relative to the planet wheel, preferably being located on the side of the planet wheel facing towards the planet wheel carrier.

Abstract: A planet gear is rotatably supported in a planet carrier assembly on needle bearings. A first, gear thrust washer bearing member permits relative rotation between the planet gear and the carrier assembly while transmitting thrust forces between the planet gear to the carrier. The thrust forces generated by the needle bearings are transmitted to the first, gear thrust washer bearing member through a second, needle, thrust washer bearing member which is disposed in a recess within the face of the planet gear and freely rotatable relative to the planet gear.

Abstract: In a planetary gear set, a pinion shaft extending through one of planetary pinions has one and opposite end portions supported by two spaced plate portions of a carrier. Needle bearings are disposed between the pinion and the pinion shaft. Pinion washers extend around the piston shaft and radially between the pinions and the adjacent plate portions of the carrier. In order to withstand a thrust which the needle bearings are subjected to, the pinion washers have integral portions extending axially into spaces defined between the pinion, the needle bearings and the spaced plate portions of the carrier. Alternatively, the pinion shaft may have integral portions extending radially into the spaces.

Abstract: A planet-pinion carrier assembly for a planetary gear system includes a planet-pinion carrier having first and second radially extending sections, planet pinions each rotatably mounted onto a pinion shaft through a bearing, a first thrust washer disposed between one axial end of each planet pinion and the first section, and a second thrust washer disposed between the other axial end of each planet pinion and the second section. The first and second thrust washers each have a surface hardness large enough to ensure an improved durability and reliability.

Abstract: A differential (1) has a housing (2) made in one piece with two side openings (10) via which parts can be introduced into and removed from the housing. The pinion gears and side gears rest against the inside of the housing via respective support members (17-20). At least for the pinion gears (13,14) there is in the support member (17, 18) a bearing member (22) of the roller bearing type and a support plate (21), where the bearing member is intended to cooperate with, on the one hand, a first bearing surface (25) on the support plate and, on the other hand, a second bearing surface (26) on the actual pinion gear. Assembly of the support member is made possible by means of the fact that the side (24) of the support plate which is to rest against the inside (16) of the housing is convex.

Abstract: A thrust washer pilots on an end of a planet gear. The piloting relationship is established by an outside diameter surface of the washer and an inside diameter surface of the planet gear. Piloting of the thrust washer on an outside diameter surface of the washer permits the provision of a radial gap between the thrust washer and a shaft on which the gear rotates, facilitating lubricant flow past the washer in an axial direction along the shaft, as well as facilitating assemble of the planet gear and thrust washer to a planet gear carrier.

Abstract: A planet carrier assembly has a pair of spaced parallel side plates interconnected by body portions with a plurality of aligned aperture pairs formed in the side plates for receiving mounting spindles on which pinion gear members are rotatably supported. Each spindle has a shoulder which contacts a locating surface on one side plate to limit axial movement of the spindle in one direction relative to the side plates. A segmental space is provide at the longitudinal end of each spindle adjacent the shoulder and each space is arranged such that a flat surface thereof faces radially outward at assembly. A retainer plate having complementary radially extending locating surfaces cooperate with the flat surface of the segmental spaces to limit rotation of the spindle relative to the side plates. A retaining ring is secured in one side plate adjacent the retainer plate to limit axial movement of the spindles in the other direction relative to the side plates.

Abstract: The assembly is so configured as to use common parts, whereby another assembly, having a different gear ratio, can be formed using the selfsame common parts. Only different gears, and a different frame is required to form the alternative assembly having the other gear ratio. Accordingly, stocking of discrete parts for the differing assemblies is greatly reduced.

Abstract: A horse power amplifier including a planetary gear train in a casing provided with an input shaft which is rotatably driven by a suitable power source and provided with an output shaft for transmitting a multiple of horse power to a desired location at predetermined multiples of speed and torque determined by the gear train in relation to the rotational speed and torque of the input power of the input power source.

Abstract: A carrier assembly has a pair of side plates with axially aligned apertures in which are disposed pin members for rotatably supporting pinion gears. Each pin member has a slot which is alignable with a groove formed in one of the side plates. A locking plate has radially extending tab members which are positionable in respective ones of the groove and slots by simultaneous rotation of the pins and locking plate about their respective axis during assembly. A spring pin or roll pin is secured in an aperture in the grooved side wall and cooperates with a notch in the locking plate to prevent rotation thereof relative to the side plate after assembly with the pins.