6333 results about "Roller bearing" patented technology

The invention relates to a roller bearing comprising curved running paths, in addition to roller bodies and strain gauge sensors which are arranged between said running paths, said sensors being located in a groove on the outer diameter of the outer ring and / or on the inner diameter of the inner ring. The length of two adjacent strip conductor sections of the strain gauge sensor varies in such a way as to measure the angular position of the roller bodies between the strip conductors.

A dual circuit lubrication system for a power end of a reciprocating pump that includes a lubrication pump that supplies lubrication fluid to a high pressure lubrication circuit and a low pressure lubrication circuit. The high pressure lubrication circuit is fluidly coupled to a crankshaft to supply lubrication fluid to journal surfaces associated with the crankshaft at a first lubrication fluid pressure. The crankshaft drives a crosshead coupled to a plunger to displace fluid from a fluid end of the reciprocating pump. The low pressure lubrication circuit is fluidly coupled to supply the lubrication fluid to a plurality of roller bearing surfaces associated with the crankshaft at a second lubrication fluid pressure. The first lubrication fluid pressure is greater than the second lubrication fluid pressure.

The subsea intervention system (SIM) includes a BOP module 10 and CT module 20. A tool positioning system 76 is used for positioning a selected subsea tool 22 stored within a rack 18 with a tool axis in line with the BOP axis, while a marinized coiled string injector 80 is moved by positioning system 81 to an inactive position. Power to the subsea electric motors 162 is supplied by an electrical line umbilical extending from the surface for powering the pumps 164, with the hydraulic system controlled by power control unit 198. The injector 80 preferably includes a pressure compensator roller bearing 220 and a pressure compensated drive system case 254.

In a vessel, such as a flexible bag, a fluid is received and agitated using an internal fluid-agitating element driven by an external motive device and supported by a bearing, such as a roller bearing.

A centrifuge for separating particulate matter from circulating fluid includes a centrifuge enclosure including a housing and a base joined together so as to define a hollow interior. A rotor is positioned in the hollow interior and is supported by the base in a manner to permit rotary motion of the rotor relative to the centrifuge enclosure. A coalescing filter assembly is secured to the rotor and is constructed and arranged for removing oil aerosol from a blowby gas which is introduced into the centrifuge. A roller bearing, press fit into the centrifuge housing, receives a portion of the coalescing filter assembly.

Rotation mechanism for a forearm which includes a moving stay (2) which supports a wrist, which includes at least one guide track in the form of an arc of a circle, a fixed stay (4) which supports the rear end of a forearm, rods (12) that are rigid lengthwise which link the moving stay (2) and the fixed stay (4) and which allow the moving stay (2) and fixed stay (4) to rotate around a longitudinal axis (Z), by means of articulated links which can rotate (14), and a strut (6) rigidly linked at one of its ends to the fixed stay (4), and linked at its other end to a roller-bearing, whose rollers are in rolling contact with the guide track of the moving stay (2), and which cause the moving stay (2) to pivot around a longitudinal axis (Z), where the direction of said longitudinal axis (Z) passes through the centre of the arc of the circle of the guide track and through the centre of a circle defined by the ends of rods linked to the fixed stay.

A wind turbine with a rotor, a nacelle and a tower. The nacelle comprises a planetary gear (4) with a planetary holder (5), on which the hub (6) of the rotor is rigidly secured, and which can be connected to the shaft of an electric generator. The planetary gear (4) comprises a ring gear (7) fixedly mounted on an engine frame (9) in the nacelle or on the member (8) rigidly connected to said frame. The planetary wheels (17a, 17b) of the planetary gear can run around a centrally arranged sun wheel (14) while engaging the latter. The sun wheel is optionally connected to a parallel gear (30). The planetary holder (5) is rotatably mounted in the ring gear (7) by means of at least two sets (17) of planetary twin wheels (17a, 17b). Each set of planetary twin wheels is mounted on a bogie shaft (19) on the planetary holder. Through an axially rearward collar (23) projecting beyond the ring gear, the planetary holder (5) is also rotatably arranged on the curved outer side (7b) of the ring gear (7) by means of an outer radial-axial-roller bearing (27). As a result, a wind turbine is obtained which is suited for generating very strong power and which is very compact and ensures a very advantageous transfer of the power at each planetary wheel.

An undermount drawer slide with an intermediate rail with abutments and vertically aligned roller bearings. An offset flange of a cabinet rail extends into a mouth of the intermediate rail. A C-shaped shelf rail wraps around the angled abutments of the intermediate rail.

The invention discloses a direct driving type precise rotating table which comprises a working table (30) and a torque motor, wherein the torque motor comprises a motor shell (8), a main shaft (2), a stator (6) and a rotor (7), the motor shell (8) is fixedly connected with the stator (6) to form a static part, the main shaft (2) is fixedly connected with the rotor (7) to form a rotating part, and the working table (30) is directly and fixedly connected with the main shaft (2) of the torque motor. Furthermore, a circular arc crossing roller bearing (1) is arranged between the motor shell (8) and the main shaft (2) and comprises an inner ring (21), two outer rings (22) and a plurality of circular arc rollers (23) arranged among of the inner ring (21) and the outer rings (22), and the circular arc rollers (23) are sequentially crossed in an angle of 90 DEG. The invention has high radial and axial load capacity, good rigidity and high motion precision and stability, and can meet the integrated requirements of serving as a high-precision digital control rotating table.

The present invention provides a high accuracy, inexpensive diagnosis method and system diagnosing an abnormality of a 10 rpm or less very low speed roller bearing using an acoustic signal, that is, detects an acoustic signal emitted from a roller bearing of a 10 rpm or less ultralow speed rotating machine using a sensor having a sound pickup performance of 10 kHz or less, uses frequency analysis to find the spectrum distribution, processes this to obtain the frequency analysis waveform, compares the spectral average value or effective value of a frequency of the natural frequency of the bearing or more of this with a reference value, and judges that the bearing is abnormal when this spectral average value or effective value exceeds the reference value.

A limited slip differential includes a friction clutch mechanism, an electromagnetic coupling, and a camming mechanism disposed between the friction clutch mechanism and the electromagnetic coupling. The camming mechanism converts shearing forces within the electromagnetic coupling to an axial force applied to engage the clutch mechanism. The camming mechanism includes annular discs having axially inclined ramps, and a roller bearing for movement along the ramps to provide for variable spacing between the annular discs, wherein increased spacing is used to apply the axial force.

An epicyclic gear system (A) includes a sun gear (2), a ring gear (4) located around the sun gear, planet gears (6) organized in two arrays between the sun and ring gears, and a carrier (8) having walls (14) located beyond the planet gears and flexpins (24) that project from the walls into the planet gears. Each flexpin includes an inner pin (30) provided with a flange 36 that is secured to the wall from which the inner pin projects, thus cantilevering the inner pin from the wall, and a sleeve (32) that is cantilevered from the opposite end of the inner pin and extends back over the inner pin, thus providing a double cantilever. Between the sleeve of the flexpin and the planet gear for that flexpin is a double row tapered roller bearing (26). The planet gears on the one array may be offset angularly with respect to the planet gears of the other array.

The invention relates to a double diffusion intussusception forge technique of a bearing ring of a tapered roller, belongs to the technical field of forging of the bearing ring of the tapered roller and mainly aims at solving the problems that the existing ring forging technique is not suitable for various bearing rings of the large and medium size tapered rollers. The technique is mainly characterized in that: (1) a GCr15 steel material section is heated to 1050 DEG C on a medium frequency induction furnace, then upset on a press, extruded backward and forward, formed, sheathed respectively and is separated into an outer sleeve and an inner sleeve or a small outer sleeve blank; (2) the outer sleeve blank is ring-rolled on a ring rolling machine, then reeled on the press and cooled into an outer sleeve forged parts of a bearing; and (3) the inner sleeve or the small outer sleeve blank is placed on the press, upset again, extruded and punched and then a ring part is obtained which is ring-rolled on the ring rolling machine, then an inner sleeve hot forged part after being ring-rolled is reeled on the press and then cooled to obtain the inner sleeve forged part of the bearing. The technique is mainly used for manufacturing the inner and outer ring forged parts of the bearing of the large and medium size tapered roller with various types, small batch or large batch.

A hub unit bearing assembly includes a tapered roller bearing including an inner race (3), an outer race (4) having a fixture (4a) defined therein so as to extend radially outwardly therefrom, and a multiplicity of rollers (5) retained in a circumferential row by a cage (6) and rollingly positioned between the inner race (3) and the outer race (4). A hub (2) including the inner race (3) on a portion of an outer periphery of said hub (2). The inner race (3) is a member either integral with the hub (2) or separated from the hub (2). The cage (6) rotatably accommodates the respective rollers (5) in the form as retained thereby prior to assemblage of the cage (6) with the rollers (5) into the roller bearing. The cage (6) and the rollers (5) are, after the rollers have been mounted in the cage (6), inserted in between the inner race (3) and the outer race (4).

A method for manufacturing a magnetotherapeutic back massager. A roller blank having a central cylindrical core circumscribed by a pair of spaced apart circular projections receives magnets in the circular projections to provide magnetic properties to the resultingly constructed magnetotherapeutic back massager. Preferably, the magnets are arranged so as to alternate polarity and a magnet-supporting strip holds the magnets together prior to and during the association of the magnets with the circular projections. The circular projections may have indentations or grooves to accommodate the magnets. Once the magnets have been associated with the circular projections, the magnets are more permanently attached by applying additional material to the circular projections so as to seal the magnets to the circular projections. The sealing material may be the same as that used to construct the roller blank, preferably latex rubber. Either prior to or after the sealing process, the magnet-supporting strip is removed from the magnets leaving them held in place by the circular projections of the roller blank. A cover, preferably bi-lobed and knobbed, is then applied to the now-magnetized roller blank. Roller bearings attached to the roller blank allow the central, bi-lobed massaging core to articulate rotatably with respect to the central spindle shaft. The central spindle shaft may have handles at opposite ends to facilitate manipulation of the resultingly-constructed magnetotherapeutic back massager.

A pivot assembly that can be retrofitted to existing traffic poles. The pivot assembly comprises a bearing assembly disposed between a top plate and a bottom plate. The bottom plate connects to the existing pole foundation with the standard anchor bolt arrangement. Similarly, the top plate connects to the base plate of the traffic pole using additional bolts. Bearings in the pivot assembly allow the pole to rotate relative to the foundation. Preferably, roller bearings are utilized, as these can be contained substantially within the pivot assembly without extending down into the foundation or up into the pole. This means the pivot assembly can be installed in existing, standard traffic poles and foundations without modifying either. The pivot assembly does not interfere with existing wiring or access openings.

The invention relates to a novel large torque piling machine power head hardened reducer. The reducer comprises an engine body, a cover body, a central gear, an output shaft and more than two groups of planetary transmission mechanisms, wherein two ends of the output shaft are respectively supported on the engine body and the cover body in a penetrating manner; the output shaft at one side of the engine body is in end connection with a grouting device system; the central gear is connected onto the output shaft in a penetrating manner and is arranged between the engine body and the cover body; the more than two groups of planetary transmission mechanisms are supported on the engine body by taking the output shaft as a symmetric center; the planetary transmission mechanism comprises an input motor, and first-stage and second-stage planetary transmission mechanisms; the input motor is connected to an inclined gear shaft which is arranged in the engine body and the cover body through the first-stage and second-stage planetary transmission mechanisms; and the inclined gear shaft is meshed with the central gear. By adopting the more than two groups of planetary transmission mechanisms, the running power of the reducer is shunted; the reducer can stably and safely run for a long time under the large torque in matched with the meshed inclined gear shaft and the output shaft through the combination supporting of a roller bearing and a plane bearing; and the reducer has the advantages of compact structure, stable running, shunted work load, little equipment abrasion, low noise and long service life.

The invention discloses a mechanical arm modularized joint with force position perceiving function and relates to a mechanical arm modularized joint, which aims at solving the problems of large size, large power consumption and low integrated level of the current mechanical arm. A motor stator is fixedly mounted on a fixed shell; a second end cover is mounted in an output shell; the rigid wheel of a harmonic reducer is arranged in the second end cover; the second end cover is connected with the rigid wheel of the harmonic reducer and the fixed shell; a central hole wiring shaft is arranged inthe motor stator and the rigid wheel of the harmonic reducer; a cross roller bearing is mounted between the output shell and the fixed shell; the output shell is connected with the outer ring of a torque transducer; the flexible wheel of the harmonic reducer is mounted between the inner ring of the torque transducer and a connecting nut; a third end cover is mounted on the output shell; a limit stop is mounted on the third end cover; a rotating shaft is fixedly mounted in a motor rotor; a rotating magnetic ring opposite to a position transducer is fixedly sheathed on the rotating shaft; and the generator of the harmonic reducer is connected with the rotating shaft. The mechanical arm modularized joint with the force position perceiving function is used for forming multi-free mechanical arms with light weight through series connection.

A self aligning bearing assembly comprising an inner ring and an outer ring, and two rows of rolling elements of equal length arranged at different contact angles, for supporting a main shaft of a wind turbine.

The invention provides a method for driving flapping wings to rotate by thrust produced by the flap of the flapping wings instead of driving by an electric motor, and the method combines with flapping wing and rotary wing technology. An aircraft designed by the method of the invention comprises the flapping wings, an electromagnetic driving mechanism, a connecting shaft, a roller bearing, a power supply, useful load, an electric steering engine, control surfaces, an undercarriage, a controller, an aircraft shell, a slip ring and an electric brush, wherein the electromagnetic driving mechanism drives a pair of flapping wings to flap up and down. The aircraft shell is connected with a rotary connecting shaft through the roller bearing, three control surfaces are evenly distributed at the lower part of the aircraft shell, and simultaneously the control surfaces have the function of the undercarriage of the aircraft. The flapping rotary wings of the invention have high pneumatic efficiency and can satisfy the mission and requirements of vertical takeoff and landing and hovering stopping of the aircraft. Simultaneously, the rotation of the flapping wings of the aircraft is a self-driven rotation, and the rotation is not offset by a torsion resisting mechanism which is added additionally. The aircraft has the advantages of simple design structure, light weight and high flight efficiency and is suitable for miniaturization aircraft design requirements.

An autonomous device for rail track inspection includes a drive wheel system propelling the device via a drive wheel system, an automatic track loading fixture for and applying a load on rails, and sensors for taking track gauge measurement. Different automatic track loading fixtures may require stopping for load and measurement, or loading and measuring while still in motion. A switch agnostic system for operation with devices on a conventional railroad track system includes a linear slider movably mounted along a linear sliding support; multiple sensors mounted to the linear slider, the sensors operable to identify a rail of a track junction; and multiple roller bearings operable to engage the rail of the track junction and control the device across the track junction in response to movement of the linear slider along the linear sliding support.

An infusion pump comprises at least three operating layers. A first layer includes epicyclic gear means comprising a rotatable central gear, a stationary outer ring gear, and movable planet gears arranged between the central gear and the ring gear in movable engagement with the central and ring gears. A second layer includes roller bearing means comprising a stationary outer ring and a movable inner roller arrangement in movable arrangement with the outer ring and coupled with the epicyclic gear means to provide a rotational bearing for the central and planet gears. A third layer includes rotary peristaltic pump means comprising stationary flexible tubing which includes a bent portion having an essentially part-cycle form and a rotor having engagement elements to squeeze the bent portion during rotation for a pump action, wherein the rotor is coupled with the central gear to transfer torque from the central gear to the rotor.

In an intermediate transfer part (100), a bead 107 is formed on an inner side of an intermediate transfer belt (102), which is rotated by an intermediate transfer belt drive roller (101). Driven roller bearings (104a, 104b) support an intermediate transfer belt driven roller (103). The intermediate transfer belt driven roller (103) is movable in a thrust direction. Ends of the intermediate transfer belt driven roller (101) and the intermediate transfer belt driven roller (103) interfere with a bead (107) so as to restrict a deflection of the intermediate transfer belt in the thrust direction. The intermediate transfer belt driven roller (103) is movable in the thrust direction against a deflection of the intermediate transfer belt (102).

In an intermediate transfer part (100), a bead 107 is formed on an inner side of an intermediate transfer belt (102), which is rotated by an intermediate transfer belt drive roller (101). Driven roller bearings (104a, 104b) support an intermediate transfer belt driven roller (103). The intermediate transfer belt driven roller (103) is movable in a thrust direction. Ends of the intermediate transfer belt driven roller (101) and the intermediate transfer belt driven roller (103) interfere with a bead (107) so as to restrict a deflection of the intermediate transfer belt in the thrust direction. The intermediate transfer belt driven roller (103) is movable in the thrust direction against a deflection of the intermediate transfer belt (102).

An inclining and rotating table apparatus comprises a rotating table device having a rotating table, and a support base for rotatably supporting the rotating table having a shaft body provided perpendicular to a rotation axis of the rotating table, and a base for rotatably supporting the rotating table device using the shaft body. A table surface of the rotating table is inclined by making the rotating table device rotate. A first V-shaped groove is directly formed in the shaft body along its rotating direction. The base has a second V-shaped groove opposing the first V-shaped groove. A cross roller bearing is structured by providing rolling bodies, which are placed in contact with the first and second V-shaped grooves and are capable of rolling therebetween, between the shaft body and the base, and arranging a rolling axis of a rolling body perpendicular to that of an adjacent rolling body.

The surface insulating layer preparing process for roller bearing is to form homogeneous and firm non-metal coating to the surface of bearing through plasma hot spraying process. The preparation process includes the following steps: degreasing the steel base of bearing; shielding the parts needing no surface treatment with steel or copper belt; sand blasting pre-treatment of the base with Ni-Al alloy powder; preparing coating material of alumina-titania alloy with alumina content of 3-13 wt% and size 200-360 / micron; spraying the coating material; sealing holes in coating; and final finishing treatment of the coating. The insulated roller bearing is used in motor mainly.

In a wind power installation with a (hollow) axis tube member and a hollow shaft mounted thereon for the rotor there is provided only a single bearing which also carries moments, between the axis tube member and the hollow shaft, whereby the parts of the machine which are to be fixed to the machine carrier and thus on the top of the pylon are of a markedly lower weight without the required orientation between the rotating and stationary parts of the electrical generator being adversely affected. In that arrangement the rotating part of the generator is radially aligned substantially with the bearing. The bearing to be used is in particular a twin-row inclined roller bearing with rows of rollers arranged at an angle of about 45° relative to each other.

The invention relates to a manipulation device for loading and unloading a shelf, in particular for a processing center, having at least one lift truck including a telescopic extension, the telescopic extension having at least one first telescoping part and at least one second telescoping part, and the first telescoping part being connected to the lift truck and the second telescoping part being connected to the first telescoping part so it is displaceable in an essentially horizontal displacement direction. To reduce the manufacturing expenditure, it is provided that the lift truck has at least one first linear roller bearing unit and at least one support roll, spaced apart from the first linear roller bearing unit in the displacement direction, in the area of sides parallel to the displacement direction, and each first telescoping part has at least one first profiled rail situated parallel to the displacement direction, each first linear roller bearing unit being guided in a first profiled rail, and the first telescoping parts being supported by the support rolls of the lift truck.

An exercise device comprising a base and a platform rotatably tiltably connected to the base, wherein the invention includes a first continuous passive motion embodiment and a second continuous active motion embodiment. The continuous passive motion exercise device (e.g. non-motorized) may utilize the nested engagement of a concave surface located in the base and a convex surface extending from the platform to provide a rotatable tiltable connection therebetween. The device may also utilize at least one roller bearing located within the base to assist in permitting the rotatable tiltable motion of the platform relative to the base. The continuous active motion exercise device (e.g. motorized) utilizes a motor housed within the base to drive the rotatably tiltably connected platform.

A low profile mounting assembly for use between a rail car side frame pedestal and the rail car roller bearing includes a shear pad and a bearing adapter. In one embodiment, the shear pad has relatively thin plates joined by an elastomeric layer. In another embodiment, the shear pad includes a projection extending downwardly from a plate to be received and retained by a recess defined in a top surface of the adapter. In another embodiment, a central cavity formed in a lower plate of the shear pad cooperates with the adapter top surface to distribute forces on the roller bearing. In another embodiment, an elastomeric projection of a shear pad plate bears against ridges on the adapter top surface to prevent disengagement.