2014results about "Rotary machine parts" patented technology

An electromechanical joint provides rotational movement in at least two dimensions while conducting electrical power between orthogonal hubs. The joint, shaped as a cross, has four conical shafts positioned orthogonally and apart from each other within an interior of a housing. Apexes of the conical shafts face each other proximate a centroid of the housing. A conductive fluid, such as Galinstan, fills recesses between the conical shafts. Separate yokes attached to pairs of the hubs may impart forces on the shafts, causing the shafts to rotate within the conductive fluid around orthogonal axes. The conductive fluid provides simultaneous conduction of electrical power between the hubs. The yokes may be affixed respectively to a current collector and conductive arms of a work machine for improved movement and power conduction without the need for additional components.

The present invention pertains to a wear pad for a telescopic boom of a work machine, comprising a base part configured to be fixedly mounted to the telescopic boom, and a top layer part configured to provide a wear-resistant, low friction sliding surface. The top layer part is configured to be releasably mounted to the base part. The invention further pertains to a telescopic boom assembly for a work machine, comprising a first boom segment having at least one first wear pad assembly mounted to a free end of the first boom segment, and a second boom segment having at least one second wear pad assembly mounted to a sliding end of the second boom segment, wherein at least one of the wear pad assemblies comprise a wear pad having a base part and a top layer part configured to provide a wear-resistant, low friction sliding surface. The top layer part is configured to be releasably mounted to the base part. Further, the present invention pertains to a work machine comprising such telescopic boom assembly.

Disclosed is a spherical roller bearing comprising: at least an outer ring and an inner ring; two groups of spherical rollers; and at least one cage configured to retain the spherical rollers, the cage comprising at least one axially inner cage ring, a first axially outer cage ring and a second axially outer cage ring extending in a circumferential direction of the spherical roller bearing, the first axial outer retainer ring and the second axial outer retainer ring are respectively separated from the axial inner retainer ring and are connected to the axial inner retainer ring through a plurality of retainer rods to form a closed cavity; each pocket is configured to receive one spherical roller and has an axially inner pocket side face and an axially outer pocket side face configured to restrain the spherical roller in the axial direction, each cage bar has a curved portion extending in the axial direction in the circumferential direction, the curved portion is at least partially concave, and in the axial direction, the curved portion is at least partially concave. The distance between the vertex of the bending part and the side face of the axial inner cavity lattice is different from the distance between the vertex of the bending part and the side face of the axial outer cavity lattice.

The invention discloses a compressor and a refrigerating system. The compressor comprises a machine shell, a motor and a pump body assembly. The shell is provided with an accommodating cavity; the motor is arranged in the containing cavity and comprises a rotor and a stator arranged on the periphery of the rotor in a sleeving mode. The pump body assembly is arranged in the containing cavity, the pump body assembly comprises a crankshaft, a static scroll plate, a movable scroll plate and a support, the crankshaft sequentially penetrates through the support, the movable scroll plate, the static scroll plate and the motor, the crankshaft comprises an eccentric section, and the movable scroll plate is arranged on the eccentric section in a sleeving mode; the outer diameter D of the stator and the outer diameter D1 of the eccentric section meet the relational expression that D / D1 is larger than or equal to 5 and smaller than or equal to 7. The problem that in the prior art, a crankshaft of a scroll compressor is low in reliability can be solved.

A bearing and flywheel system can include a first bearing portion having an opening of a first dimension there through and a central longitudinal axis, a second bearing portion having a second dimension, the second dimension being smaller than the first dimension, and a flywheel coupled to the second bearing portion. The bearing portions can include high-temperature superconductor(s) and / or magnets. The second bearing portion can be disposed at least partially within the opening through the first bearing portion. A gap can exist between an outer surface of the second bearing portion and an inner surface of the first bearing portion. The second bearing portion can be configured to rotate relative to the first bearing portion.

To have excellent surface workability, and to suppress the difference in workability between a surface and an inside, and processing quality and dimensional variations during mass production processing.SOLUTION: Silicon nitride sintered body has a silicon nitride crystal particle and a grain boundary phase, and when a width is D before the surface processing is performed, a relationship between an average particle diameter dA and an average aspect ratio rA of the silicon nitride crystal particles in a first region from the outermost surface to a depth of 0 to 0.01D, and an average particle diameter dB and an average aspect ratio rB of the silicon nitride crystal particles in a second region inside the first region, are satisfied the following formulas. 0.8≤dA / dB≤1.2, 0.8≤rA / rB≤1.2.SELECTED DRAWING: Figure 1

A linear motion guide apparatus that is easily assembled is provided. The linear motion guide apparatus includes: two guide rails that are movable relative to each other in a longitudinal direction thereof via at least one rolling element; and a cage configured to hold the rolling element and hold a gear engaging with a meshing portion provided to at least one of the two guide rails. The cage includes: a first split body in which a rolling element holding portion that holds the rolling element and a gear holding portion that holds the gear are integrally formed; and a second split body in which a rolling element holding portion that holds the rolling element and a gear holding portion that holds the gear are integrally formed. The first split body and the second split body are joined to each other.

The invention discloses a needle mounting device, and relates to the technical field of retainer needle mounting. A needle installing device comprises a reciprocating driving part, a belt rotating part connected to the reciprocating driving part, a pressing die connected to the belt rotating part and a matching die arranged opposite to the pressing die, the matching die is provided with a containing groove used for containing a retainer, and the matching die is further connected with a needle feeding machine communicated with the containing groove. The radial driving-in device can efficiently complete radial driving-in of the roller pins.

The invention discloses a composite material connecting rod structure, and relates to the technical field of composite material structure design and manufacturing, in particular to a light high-strength composite material connecting rod which comprises a composite material rod body, a flange connector, a flange clamp, an adjustable clamp and a tensile bolt set. The composite material rod body is made of fiber reinforced resin matrix composites through a winding or laying winding process, and reinforcing areas and transition oblique angles are arranged at the two ends of the composite material rod body. The adjustable clamp and the flange clamp are in interference fit with the end of the rod body through built-in inclination and surface texture, the flange connector is connected with the clamp through the tensile bolt set, and efficient transmission of tension and compression loads is achieved. Through the integrated combined structural design, the problems of stress concentration and interface failure caused by traditional glue joint or screw joint are solved, the bearing capacity, environmental adaptability and reliability of the connecting rod are remarkably improved, and the connecting rod is suitable for the high-load fields such as aerospace, high-speed rails and heavy machinery.

The invention relates to the technical field of hydro-generator maintenance, and provides an upper guide shoe gap adjusting device and a gap adjusting method.The upper guide shoe gap adjusting device comprises an adjusting mechanism detachably installed on an upper guide cushion block and used for driving a wedge to move up and down relative to the upper guide cushion block; the first sensor is used for detecting the height of the wedge; the second sensor is used for detecting whether the upper guide shoe is tightly attached to the upper end shaft or not; the controller is electrically connected with the adjusting mechanism, the first sensor and the second sensor and used for controlling the adjusting mechanism to act according to detection data of the first sensor and the second sensor. Various data in the gap adjusting process are detected through the sensor, the height of the wedge is automatically adjusted according to the detected data, then accurate and rapid adjustment of the upper guide shoe gap is achieved, and the working efficiency is improved.

A rolling-element bearing includes first and second concentric ring assemblies and rolling elements supporting the ring assemblies for relative rotation. The first ring assembly includes a first rolling ring and a first sealing ring mounted axially to the first rolling ring and supporting a first seal element and a second seal element, and the second ring assembly includes a second rolling ring and a second sealing ring mounted axially to the second rolling ring. The first seal element includes a first lip in contact with the second sealing ring and the second seal element includes a second lip in contact with the second sealing ring, the first and second lips delimiting a first chamber between the first and second sealing rings, A first purging channel extends from an inlet at the first chamber to at least one outlet in at least one external surface of the second rolling ring.

The present invention relates to a system method system based in a IoT (Internet of Things) platform for monitoring solids treatment machinery in fertilizer, mineral, or chemical sectors, which allows obtain information about the machines state and performance remotely and automatically, and in real time. This invention combines a set of sensors that measures different parameters such as position, vibration or temperature of different machinery component; with a network that receives that information and stores it into a cloud database which and an app to check said information.

An annular sliding component disposed at a relative rotation point of a rotating machine, includes a plurality of positive pressure generation grooves arranged side by side in a circumferential direction on a sliding surface of the sliding component. The positive pressure generation grooves are configured for generating positive pressure by a sealing target fluid on the sealing target fluid side being introduced during the relative rotation of the sliding component and a sliding component. The positive pressure generation grooves have a plurality of leading edge portions at leading edges on a downstream side in a direction of the relative rotation. The plurality of leading edge portions are arranged side by side in the circumferential direction. At least part of the plurality of leading edge portions is disposed at different radial positions.

A rolling bearing includes a first ring and a second ring capable of rotating concentrically relative to one another. The bearing further includes at least two seals and a spacer ring axially arranged between the two seals and including a flange that radially outwardly projects toward the second ring, and an annular axial collar. The spacer ring has at least three dissociable segments circumferentially adjacent forming the spacer ring.

A composite drive shaft includes a web-based body defining a longitudinal axis. The web-based body has a first composite layup end section, a second composite layup end section that is opposite to the first composite layup end section, a first spiral composite element extending between the first composite end section and the second composite layup end section, and a second spiral composite element extending between the first composite end section and the second composite layup end section. The first spiral composite element and the second composite spiral element are embedded into the first composite layup end section, and the second composite layup end section. The first composite spiral element and the second composite spiral element are arranged in a bi-directional orientation relative to the longitudinal axis. The first spiral composite element and the second spiral composite element are arranged at pre-determined angles and possess a uni-directional fiber-reinforced polymer-matrix composite structure.

The invention discloses a silicon nitride ceramic formula and a preparation process of a bearing roller matched with the silicon nitride ceramic formula, belongs to the technical field of ceramic materials, and aims to solve the problem of rolling contact fatigue failure caused by insufficient fracture toughness and microscopic crack propagation of an existing silicon nitride bearing roller under high-speed and heavy-load working conditions. The core formula of the invention comprises an alpha-Si3N4 matrix, a composite rare earth additive, a nano TiC modifier and an MgO heat conduction enhancer. The fracture toughness and fatigue resistance of the material are remarkably improved through process nano powder ultrasonic pre-dispersion, closed nitrogen circulation spray granulation, two-step air pressure sintering and cryogenic-thermal tempering gradient stress treatment.

An iron-based corrosion resistant and wear resistant alloy. The alloy can comprise (in weight percent) about 0.005-0.5% boron, about 1.2-1.8% carbon, about 0.7-1.5% vanadium, about 7-11% chromium, about 1-3.5% niobium, about 6-11% molybdenum, about 3-10% nickel and the balance including iron and incidental impurities. Alternatively, the Nb content can be replaced or combined with Ti, Zr, Hf and / or Ta such that 1%<(Ti+Zr+Nb+Hf+Ta)≦3.5. The alloy has improved hot hardness and high temperature compressive strength and is suitable for use in elevated temperature applications such as in diesel valve seat inserts.

A sensorized roller for a rolling bearing includes a roller body having a central axial through bore and a device fitted in the axial central through bore. The device includes a power module having a cylindrical body having a first end cap, the cylindrical body extending into a first end of the axial through bore of the roller body. The device also includes a second end cap having a cylindrical body inserted into a second end of the axial through bore of the roller body. A first annular sealing element is interposed between the cylindrical body of the power module and the axial central through bore of roller body, and a second annular sealing element is interposed between the cylindrical body of the second end cap and the axial central through bore of the roller body.

A rolling bearing is provided which includes a cage (3) including two annular members (11) each including (i) pocket walls (9) each having a recess, and (ii) connection plates (10) circumferentially alternating with the pocket walls (9), and each coupling together corresponding ones of the pocket walls (9), the two annular members (11) being axially opposed to each other such that pockets (2) are circumferentially defined by the recesses of the pocket walls (9) of the two annular members (11); an inner ring (5) having an inner ring raceway surface (4) on an outer peripheral surface of the inner ring (5); an outer ring (7) disposed on an outer peripheral side of the inner ring (5), the outer ring (7) having an outer ring raceway surface (6) on an inner peripheral surface of the outer ring (7); and balls (8) interposed between the inner ring (5) and the outer ring (7), the balls (8) being retained in the respective pockets (2), which are defined in the cage (3), wherein spherical portions (17) are formed on the respective pocket walls (9) of the two annular members (11), the spherical portions (17) being out of contact with the balls (8) in a state where the balls (8) are in abutment with circumferential ends of the pockets (2).

A rolling bearing, in particular a ball bearing, is in the form of two bearing rings that are mounted so as to be rotatable relative to each other about an axis. The roller bearing includes an inner ring and an outer ring which each form a guide portion of a guide. The guide portion surrounds the axis with the portion formed by the inner ring is radially opposite the portion formed by the outer ring. In the guide, rolling bodies are distributed around the axis and rest on the two guide portions. When the bearing rings rotate, the rolling bodies roll on the two guide portions. At least one of the rings has a slide ring as the guide portion and a stabilising ring on the slide ring. The slide ring and the stabilising ring are produced from first and second plastics materials, respectively. The first plastics material is softer than the second plastics material.

The casing (10) of a support assembly for food applications has a housing portion (20) having a through-seat (25) within which a bearing unit is seated. The casing has a flange portion (30) for fixing the casing to a machine. The flange portion has a base surface (35) and at least two through-holes (32) for housing elements for fixing the casing to the machine. The casing has at least two metal bushings (40), equal in number to the number of through-holes, housed stably inside respective through-holes and coaxial with them. The casing has at least two spacers (50), equal in number to the number of through-holes, applied on the base surface of the flange portion opposite the respective through-holes. The casing has at least two inserts (60), equal in number to the number of spacers, and housed with interference inside the respective metal bushings and inside the respective spacers.

The object of the invention is a method for the production of lithium complex soap lubricating greases or lithium-calcium complex soap lubricating greases and corresponding lubricating greases produced by this process and their use in slide and rolling bearings.

A sliding member according to an aspect of the present disclosure includes: a sliding member body containing a metal as a main component; and an outer layer laminated directly on a surface of the sliding member body and containing a crosslinked fluorine resin as a main component, and an arithmetic average roughness Ra1 of a surface having a waveform obtained by extracting a frequency component of a region having waviness having a frequency of not lower than 0.1 µm and not higher than 100.0 µm on a surface of the outer layer through fast Fourier transform processing, and performing inverse Fourier transform processing on data of a frequency component of a region having waviness having a frequency of not lower than 0.1 µm and not higher than 10.0 µm out of the extracted frequency component, is not greater than 0.035 µm.

The invention relates to a wheel bearing (1) for a motor vehicle, comprising a bearing element (2) having a raceway (4a, 4b) accommodating several rolling elements (3), wherein the raceway (4a, 4b) deviates at least in sections from a circular line of constant diameter.

A method includes mounting an assembled wheel hub assembly on a spindle, spraying a zinc flake coating material onto first surfaces of the assembly while rotating the wheel hub assembly, the spraying occurring while shielding second surfaces of the wheel hub assembly with a shield on the spindle and shielding third surfaces of the wheel hub assembly using a shielding tape. After creating the layer of zinc flake coating material on the first surfaces, heating the layer of zinc flake coating material using at least one infrared (IR) lamp to cure the layer of zinc flake coating material, the heating occurring while rotating the wheel hub assembly.

A shoe (1) for hydrodynamic bearing configured to be placed in contact with a lubricating fluid is described, comprising a base (2) made of metallic material; a coating (3) made of insulating material coupled to the base (2); and a temperature probe (4); wherein the probe (4) comprises a temperature sensor (5) positioned inside the coating (3) and a conducting wire (6) extending between a first end (61) connected to the temperature sensor (5) and a second end (62) facing outside the coating (3) and configured to be in contact with the lubricating fluid.

An elastomeric bushing comprises an inner sleeve including a first end face and an opposite second end face. A bearing circumscribes the inner sleeve. An elastomer is disposed around and directly engages the bearing. The elastomer includes a first seal gland. An outer sleeve is disposed around the bearing and the elastomer. The outer sleeve is spaced apart from the inner sleeve and directly engages the elastomer. A one-piece monolithic first cap includes an end wall and a side wall surrounding a portion of the inner sleeve and a portion of the bearing. The end wall radially inwardly extends from the sidewall and overlaps the first end face of the inner sleeve. The stepped sidewall includes an inner surface positioned in engagement with the first seal gland.