353 results about "Bearing wear" patented technology

The present invention generally relates to procedures and apparatus for monitoring incoming signals to detect the presence of selected target signals contained within the universe of signals received. More particularly, the present invention is directed to monitoring audio signals to detect selected ultrasonic and sonic signals in an ambient environment. Thus, the present invention is even more specifically directed to leak detectors and bearing wear indicators and methods for detecting sound signals which either travel in the air or are present in solids.

A rotary pump for liquid having a housing, a shaft carrying a motor rotor, a motor stator fixed in the housing and surrounding the rotor to rotate the rotor and shaft about an axis. The shaft is mounted in the pump housing by axially spaced conical bearings, each bearing including a first element fixed on the shaft with a first conical bearing surface concentric with the axis, a coacting second element carried by the housing with a second conical bearing surface concentric with the axis and slidably engaging the first bearing surface and a spring forcing the elements together. This pump includes a wear indicator comprising: a first drive member on the shaft, an imbalance member carried with the second element of a bearing with a second drive member aligned with the first member and movable axially toward the first drive member as the bearing surfaces wear so the first and second drive members engage when the imbalance member moves axially a given distance. A sensor detects vibrations caused by rotation of the imbalance member by the shaft.

A seal assembly for deflecting contaminated fluid flowing through the seal assembly from an upstream space to a downstream space includes an annular housing, at least one vent hole peripherally disposed on the annular housing, a first set of seals disposed within the annular housing adjacent to the downstream space, the first set of seals having an inclined surface to deflect the flow of contaminated fluid through the at least one vent hole, and a second set of seals mounted on the shaft, disposed within the annular housing, adjacent to the first set of seals and adjacent to the upstream space. The second set of seals may have larger inside diameter than the first set of seals. The seal assembly may prevent contaminated fluid from entering an air bearing cooling circuit, thereby preventing bearing wear, erosion and failure.

A pneumatic rotary coupling (25) for an air pressure installation for one or more wheels of a vehicle. The coupling's tube (49) has one end formed in the shape of a nozzle which extends in the plane of the wheel, disposed as an axial extension of the wheel's axle end. The tube is located rotary and slidable inside block (35) that is fixed to the wheel's hub cover. A cover (37) fixed to the block presents a chamber (45) with an edge that defines a seat for a plastic bushing (47) that supports the coupling's tube. The external surface of this bushing is conformed by grooves (53) that communicate the chamber towards the orifices linking with the tires. The coupling includes a valve (75) that is pushed open by the tube in the event of outward wheel offset, thereby depressurizing the chamber. The tube further includes grooves (87) for bypassing a seal (57) in the event of inward wheel offset, thereby depressurizing the chamber through a vent opening (65). In either case, the chamber depressurization signals the fault to the driver. The vent opening is in a circumferential recess (71) for housing an o-ring (73) that prevents dust, dirt and other undesirable particles from entering the coupling and the wheel bearings.

The invention provides a lubricant composition for a double-clutch gearbox. The lubricant composition comprises: (A) at least a hydrofinishing III mineral oil with high viscosity index, or polyolefin cogasin, or ester cogasin, or any combination of the above components; (B) at least a viscosity index improver; (C) at least a pour-point depressant; (D) at least a phosphorus-containing antiwear additive; (E) at least a friction modifier; (F) at least a high-temperature anti-oxidant; (G) at least an ashless dispersant; (H) at least a metal detersive; and (I) at least a metal passivator. The above lubricant composition has excellent abrasion resistance, frictional characteristic, synchronization performance, antiwear endurance, high-temperature lubrication stability, antirust and anti-corrosive property, high and low temperature performance, shearing stability, cleaning dispersity, high-temperature anti-foaming property and micropoint corrosion resistance, passes through Vickers pump experiments, FAGFE-8 bearing wear experiments, SAE No.2 frictional characteristic experiments, TE92M anti-shake experiments, SSP-180 synchronous bench durability experiments, CEC L-45 taper roller shearing experiments, CEC L-84 thermooxidizing soundness experiments and FAV-54 mircopoint corrosion experiments, and simultaneously meets lubrication requirements of clutches, a synchronizer, gears and bearings in the double-clutch gearbox.

A system for determining at least one condition of a bearing including an optical fiber for transmitting light from a light source. The optical fiber is embedded in the bearing and operatively coupled to an interferometric system. The interferometric system is operatively coupled to a processor. The interferometric system provides the processor with information relating to wear of the optical fiber, and the processor determines wear of the bearing, rate of wear and remaining useful life of the bearing based on the information relating to wear of the optical fiber.

A bearing system for use in high speed rotating machinery, such as a turb ocharger (14), wherein a shaft (12) is rotatably supported by a floating bea ring cartridge ( 10) having axially spaced angular contact bearings (16, 18) each with a set of bearing balls (30) supported between inner and outer rac es (32, 34). The bearing cartridge includes an inner spacer sleeve (42) for axially spacing the inner bearing races, and a rotationally floating outer s leeve (46) having a pair of radially inwardly open grooves (52) for removabl y receiving snap-type retaining rings (54) which engage and axially space th e outer bearing races. The axial dimension of the inner spacer sleeve is elo ngated slightly relative to an axial dimension defined between outboard face s of the installed retaining rings, thereby slightly unloading the sets of b earing balls from their respective outer bearing races. Such slight axial un loading enhances smooth- running operation with minimal bearing wear, while accommodating transient loads during operation.

The invention provides a joint bearing low-temperature wear test system. The system comprises a base, a temperature box, a radial stress subsystem, a power subsystem, a temperature control subsystem, a wear measurement subsystem and a clamp subsystem. The clamp subsystem comprises a pushing block, a loading plate, an accompanying test bearing seat, a mandrel, an accompanying test bearing, an end cover and a locking part, which are independent detachable parts; the mandrel, the pushing block or the loading plate can be replaced to realize clamping in a life test of joint bearings with different diameters, so that the utilization rate and the universality of a test clamp are improved; and in addition, the clamp subsystem adopts the structural design improvement that a single-side flange is added to an inner hole of the loading plate, the thickness of the pushing block is reduced, the flange and the end cover cooperatively fix the accompanying test bearing, and the like, so that the mandrel deformation or breakage easily caused in the joint bearing wear test process is effectively avoided.

The invention discloses a bearing impact friction-wear testing machine. The bearing impact friction-wear testing machine comprises a test stand, a main drive system, a friction pair system, a radial impact system, a hydraulic loading system, a temperature and humidity control system, a signal acquisition and detection system and a computer. The working condition in the friction pair system duringa bearing friction-wear test is changed through the main drive system, the hydraulic loading system and the temperature and humidity control system, and the vibration condition in the vibration bearing operation is simulated by the radial impact system; and the bearing friction-wear output parameters in the friction pair system are collected and monitored in real time by the signal acquisition anddetection system, and are transmitted to the computer through a data acquisition card for data processing and analysis so as to carry out a friction-wear test of a bearing under the coupling effect of impact and friction. The bearing impact friction-wear testing machine provides an effective testing platform for studying the wear behavior of the bearing under the coupling effect of the impact andfriction, and the collected test parameters can be used as judging criterions for bearing wear state identification.

A power steering apparatus includes a housing defining a chamber. A rack is disposed within the chamber and is moveable along a longitudinal axis. A pinion extends into the chamber for meshing engagement with the rack. A bearing supports the rack relative to the housing and is moveable relative to the housing to re-position the rack relative to the pinion. An adjustment mechanism continuously biases the bearing in response to loosening of the meshing engagement to re-position the rack. A dampener resists the movement of the bearing to slow the re-positioning of the bearing. Preferably, the dampener includes a plastic fluid having a very high viscosity. The plastic fluid is disposed between adjacent moving parts to resist the relative movement between the bearing and the housing.

The invention discloses a single-roller bit with PDC (polycrystalline diamond compact) composite plates, which is characterized in that diamond PDC plates are brazed on a toothed column and then are embedded on a roller, a bearing is sealed with a metal ring in a combined manner by two O-shaped rings, high-speed rotating radial combined sealing of a roller groove diameter and a ring outer diameter and high-speed rotating radial combined sealing of a ring inner diameter and a shaft groove diameter are respectively realized alternatively by the aid of the two O-shaped rings, the sealing life of each single O-shaped ring is prolonged, and bearing abrasion speed is reduced by the aid of double thrust cushions; gauge protection ability and work stability of the bit are increased by two-stage gauge protection; and high-speed slurry sprayed out via a hydraulic jetting system cleans rocks of a shaft bottom, a surface of the roller and PDC teeth and carries rock scraps at the shaft bottom to return upwards, the multiple groups of gauge protection PDC composite plates are arranged reasonably, work indexes of the bit are greatly increased under the condition of ultra-high rotation speed, well drilling cost is reduced, the rotation speed of the bit and torque of the PDC plates are reduced as compared with a PDC bit, damage to the PDC plates due to rotation is reduced, and work performances of the single-roller bit can be greatly improved.

The invention relates to compositions suitable as additive packages for lubricants and other functional fluids, the composition comprising sulfur-containing extreme pressure components, phosphorus-containing anti-wear additives, a triazole-containing species. A preferred use is in industrial gear oils. In embodiments, enhance protection in the areas of bearing wear and micropitting are obtained.

The invention discloses an elastically supported foil dynamic pressure gas bearing with inherent structural pre-wedge space, comprising a bearing and a rotating shaft inside the bearing; an elastic supporting element is arranged inside the bearing, and the elastic supporting element and A top layer of flat foil is arranged between the rotating shafts, a smooth shaft section is arranged in the axial middle area of ​​the surface of the rotating shaft, a row of inclined grooves is provided on the surface of the rotating shaft and on both sides of the smooth shaft section, and the top layer is flat. The inside of the foil wraps around the rotating shaft and forms a pre-gap between the top flat foil and the rotating shaft, while the elastic support element and one end of the top flat foil are fixed at the same position of the bearing and the other end is free; the invention The advantage is that it can form a dynamic pressure air film at a relatively low speed and small foil deformation, make the contact between the shaft and the bearing even during the start and stop stages, reduce the contact friction time and wear between the shaft and the bearing, and improve System stability and reliability.

The invention discloses a multivariant linear arc-shaped motor, comprising a rotary motion linear arc-shaped motor, a rectilinear motion linear arc-shaped motor, a motion shaft and the like. Bridge arc-shaped stators of the rotary motion linear arc-shaped motor and the rectilinear motion linear arc-shaped motor are integrated into a whole by fasteners and step-shaped structures, stator core laminations are distributed in space in an orthogonal manner, stator windings are arranged in an orthogonal and zoning manner, a cylindrical rotor is shared by the two motors, and stator core zone areas and structural parameters thereof can be respectively selected for the two linear arc-shaped motors according to performance indexes. By adopting the scheme in the invention, a load can be directly driven to do linear, rotary or spiral motion, and the multivariant linear arc-shaped motor has the advantages of simple and compact structure, concise transmission mechanism, small bearing wear, easy control and the like.

The invention relates to an apparatus used for a bearing wearing test. The apparatus includes a double-fork pedestal (1), a bearing test piece (2) is installed on the double-fork pedestal (1) through a mandrel (3), the upper portion of the bearing test piece (2) is attached to a loading single ear (4), the loading single ear (4) is connected with a loading actuating cylinder (6), the loading actuating cylinder (6) downward applies radial vertical compression to the bearing test piece (2), and the above assemblies are disposed in a temperature test box (8); and the mandrel (3) is connected with a swing actuating cylinder (10), the swing actuating cylinder (10) drives the mandrel (3) to rotationally move back and forth at +/-25DEG, and the mandrel (3) is provided with a torque sensor (9) and a spacing sensor (11). Compared with apparatuses in the prior art, the apparatus provided by the invention has the advantages of realization of the various requirements of performance tests of a bearing and a liner which are used by an undercarriage, satisfying of the various requirements of the performances of joint bearing test pieces in Technological Standard of Aerospace Series of Corrosion Resistant Steel Made Self-lubricating Loading Joint Bearing, test cost reduction, and energy consumption saving.

The invention provides an ashless antiwear oil film bearing lubricant composition, which comprises: (A) at least a highly refined mineral oil with high viscosity index; (B) at least an emulsifier; (C) at least an anti-foaming agent; (D) at least an ashless phosphorus-containing antiwear additive; (E) at least an anti-oxidant; and (F) at least a metal passivator. The above lubricant component has excellent demulsibility, filterability, anti-foaming property, air release property, abrasion resistance and oxidation resistance, passes through FAG FE-8 bearing wear experiments, SKFEMCOR bearing corrosion experiments and FLENDER anti-foaming experiments, and is suitable for lubricating various bearings and industrial gears, especially lubricating highspeed wire rod oil film bearings.

The invention provides an automobile automatic transmission liquid composition with excellent anti-wear property. The automobile automatic transmission liquid composition comprises (A) at least one type of high-viscosity-index hydro-refining type III mineral oil, synthetic oil or any composition of the components, (B) at least one type of viscosity index improver, (C) at least one type of pour depressant, (D) at least one type of phosphorated anti-wear additive, (E) at least one type of metal detergent, (F) at least one type of ashless dispersant, (G) at least one type of high-temperature antioxidant, (H) at least one type of friction modifier and (I) at least one type of metal deactivator. The lubricant composition has excellent high and low temperature performance, anti-wear property, frictional characteristic, anti-wear and friction durability, thermal oxidation stability, and especially outstanding anti-wear property, passes through a frictional characteristic rack, a friction durability rack and a thermal oxidation stability rack of a self-changing gearbox, and passes through an FAG FE-8 bearing wear rack, so that the automobile automatic transmission liquid composition is suitable for automobile automatic transmission systems, and especially suitable for an automatic transmission system with a special requirement on anti-wear property.

The invention discloses a high load-bearing wear-resistant nanometer coating, which consists of an adhesive, a solid lubricant, an auxiliary agent, a nanometer filler, and a mixed organic solvent. The adhesive is one-component moisture-curable polyurethane, the solid lubricant is polyfluo wax, the auxiliary agent is a melamine-cyanuric acid complex, the functional filler is titanium dioxide nanotubes, and the mixed solvent consists of acetone and ethyl acetate. The coating has good abrasion resistance, friction-reduction performance and high load-bearing performance, and also has good oil medium resistance and hydrophobic property, convenient construction and small pollution to the environment; and a sliding component sprayed with the coating can be used for a long time in the environment of dry friction and oil medium.