2470results about "Sliding contact bearings" patented technology

A hybrid lubricating module includes a housing and an assembly which consists of at least two elements and has an axial hole run through by a shaft. At least one of the elements has one set of multiple notches on one end surface communicating with the axle hole. The housing has a through axial cavity to encase the assembly. The outer wall surface of the assembly and the inner wall surface of the housing are assembled to each other to form at least one storage chamber to store lubricating media. The multiple notches on at least one adjacent element form at least one set of fine flow passages communicating with the axial hole and the storage chamber.

A blood pump includes an impeller; a drive shaft coupled to the impeller and configured to rotate with the impeller; and a rotor coupled to the drive shaft and configured to rotate with the drive shaft. The rotor includes a driven magnet having an outer surface. A corrosion-resistant coating may be disposed on the outer surface of the driven magnet. A stator is disposed adjacent the rotor and configured to drive the rotor, causing the rotor to rotate; and a motor is configured to drive the stator. A protection assembly may be disposed adjacent the stator and configured to receive an end of the drive shaft, and may include a protection assembly housing enclosing a protective fluid chamber, the protective fluid chamber including the driven magnet and at least a portion of a bearing configured to engage the end of the drive shaft.

An annular sliding component is one of two sliding rings that rotate relative to each other and partition a sealed fluid space and a leakage space, the sliding component includes a dynamic pressure generating groove that generates a dynamic pressure, and includes an inclined groove which extends from the leakage space toward the sealed fluid space with an inclination in a forward rotation direction and has a first dynamic pressure generating end portion and a reverse groove which extends from a backward rotation direction side of the inclined groove in a backward rotation direction and has a second dynamic pressure generating end portion.

The invention provides a transmission chain and a wind generating set. The transmission chain comprises a bearing seat, a transmission shaft and a transmission shaft, the main shaft is rotatably supported in the bearing seat and is provided with a front end and a rear end which are opposite to each other; the gear box comprises a box body and a planet carrier arranged in the box body, the box body is fixedly connected with the rear end of the bearing seat, and the planet carrier is rigidly connected with the rear end of the main shaft; and the thrust bearing is arranged in the gear box. According to the transmission chain, the overall structure is compact, the shafting and the gearbox are highly integrated, and the transmission chain has the advantages of being light in weight, low in overall cost and the like.

There is provided a sliding component that supplies a sealed fluid to a leakage side in a gap between sliding surfaces to exhibit high lubricity and has a small leakage of the sealed fluid. A sliding component that has an annular shape and is disposed in a place where relative rotation is performed in a rotary machine, includes a plurality of dynamic pressure generating mechanisms provided in a sliding surface of the sliding component, each of the dynamic pressure generating mechanisms including a deep groove portion that communicates with a leakage side, and a plurality of shallow groove portions that communicate with the deep groove portion and are arranged in a circumferential direction in parallel relationship to each other.

A bearing system includes a housing having an inner surface defining a bore and a slot, and a foil bearing assembly positioned within the bore. The foil bearing assembly includes an outer foil assembly, a bump foil assembly, and an inner foil assembly. The outer foil assembly includes an outer foil extending from a first outer foil end to a second outer foil end, and a first anti-rotation tab at the first outer foil end that is received by the slot to limit circumferential movement of the outer foil in a first direction. The inner foil assembly is secured to the outer foil and includes an inner foil extending from a first inner foil end to a second inner foil end, and a second anti-rotation tab at the second inner foil end that is received by the slot to limit circumferential movement of the inner foil in a second direction.

There are provided sliding components that allow sliding surfaces to smoothly slide against each other regardless of whether a relative rotation direction is a forward rotation or a reverse rotation. The sliding components and include: a pair of sliding surfaces and disposed to face each other at a location where a relative rotation takes place when a rotating machine is driven. The sliding surface is provided with a first dynamic pressure generating groove communicating with a radially outer-side space and extending in one circumferential direction, a second dynamic pressure generating groove extending in the opposed circumferential direction, and a conduit groove communicating with the space. The conduit groove includes an annular groove and a communication groove communicating between the annular groove and the space. The second dynamic pressure generating groove is disposed closer to the space than the annular groove, and communicates with the annular groove.

The invention discloses a variable-damping tilting pad bearing, and relates to the technical field of sliding bearings. Comprising an upper half bearing shell, a lower half bearing shell, spherical supports, oil injection devices, tilting pads and bearing end covers, the upper half bearing shell and the lower half bearing shell form an annular bearing shell, the tilting pads are arranged on the inner side of the annular bearing shell and distributed at equal intervals in the circumferential direction, and the spherical supports are installed between the pad backs of the tilting pads and the annular bearing shell. The oil spraying devices are arranged between the adjacent tilting pads, the bearing end covers are installed on the two axial sides of the annular bearing shell, and through drainage holes are formed in the spherical supports and the tilting pads. Lubricating oil sprayed into the tile surfaces of the tilting tiles from an oil spraying device forms a high-pressure power oil film on the tile surfaces, part of the high-pressure lubricating oil enters the space between the spherical support and the annular bearing shell through the through drainage holes, high-pressure radial jacking force is formed, the spherical support is jacked up, and a static-pressure oil film is formed between the spherical support and the annular bearing shell. And the supporting damping of the tilting pad is improved.

The invention relates to a turbine tilting pad sliding bearing lubricating oil device and an oil temperature adjusting method. The lubricating oil device comprises an oil inlet pipe and an oil supply pipe. A mounting part is arranged at the oil outlet end of the oil inlet pipe and is provided with a rotating hole; the oil supply pipe is rotationally arranged on the rotating hole, and an oil spraying hole is formed in the outer side wall of the oil supply pipe; a rotating shifting block is arranged on the outer side wall of the oil supply pipe, a mounting groove is formed in the inner side wall of the rotating hole, an arc-shaped groove coaxial with the rotating hole is formed in the mounting groove, and the sliding end of the rotating shifting block is slidably arranged on the arc-shaped groove and divides the mounting groove into a supporting groove and a driving groove in the circumferential direction of the rotating hole; one end of the elastic piece is connected to the groove wall, away from the rotating shifting block, of the driving groove, and the other end of the elastic piece abuts against the rotating shifting block. The driving groove is filled with a driving body, and the driving body abuts against the rotating shifting block. The system can automatically adjust the temperature of the lubricating oil, has the characteristics of rapidness and high reliability, and can meet the requirement of rapid load change of a coal power unit under a novel power system.

The present invention relates to an air foil journal bearing in which air is introduced between a foil and a rotor rotating at high speed and generates pressure to support a radial load of the rotor and allow the rotor to rotate smoothly, and more particularly, to a housing fixing structure of an air foil journal bearing that improves durability against external impact or vibration by restricting an axial movement of a bump by means of two opposite ends of the bump and a top foil fixing portion.

The invention discloses a thrust bearing tilting pad structure and an injection system, a tilting pad comprises a pad seat and a filling medium, the pad seat comprises a supporting part, an elastic part and a mounting part which are sequentially arranged from bottom to top and are connected with one another, and the elastic part comprises a plurality of hollow pipes which are arranged side by side and are sequentially connected with one another; each hollow tubular structure is filled with the filling medium, the filling medium is formed by mixing a main agent and an auxiliary agent, the main agent has elasticity, and the auxiliary agent has viscidity. The tilting pad has the beneficial effects that when the hollow tubular structure encounters external impact, the filling medium can better buffer and disperse pressure, vibration generated in the working process of the tilting pad is effectively absorbed and attenuated, noise generated in the working process of the tilting pad is reduced, and by changing the preparation proportion of the main agent and the auxiliary agent, the tilting pad can be effectively prevented from falling off. The damping coefficient of the filling medium can be adjusted, and damping adjustability is achieved.

A fluid film bearing for a rotor hub of a wind turbine includes a first part and a second part rotatably coupled to each other about a longitudinal axis. The first part includes an annular first sliding surface extending in the circumferential direction of the fluid film bearing along the first part. In addition, the second part includes a support structure and a first group of bearing pads coupled to the support structure and having a bearing pad sliding surface configured to slide on the first sliding surface. In addition, the fluid film bearing further includes a seal arranged between the first part and the second part.

Hydrodynamic rotor shaft plain bearing for a rotor shaft (8), in particular of a wind turbine, comprising at least one axial bearing (1) with an axial bearing housing (2) and a plurality of axial bearing segments (5) arranged therein, wherein the axial bearing housing (2) is fastened to a carrier (25), wherein the axial bearing housing (2) has a housing body (2a) with a plurality of radial openings (4), wherein an axial bearing segment (5) is inserted into each opening (4), which axial bearing segment can be inserted and removed from the radial outside, and in that two laterally radially projecting fastening flanges (3) are provided on the housing body (2a), which fastening flanges are supported on support cuts (26) projecting from the carrier (25) and are fastened thereto in such a way that all axial bearing segments (5) are freely accessible from the radial outside.

The invention discloses a fine gap-adjustable tilting pad bearing and a control method, and belongs to the technical field of bearings, and the fine gap-adjustable tilting pad bearing comprises a bearing body, pads, pre-tightening screws, set screws, a cover plate, a displacement amplification structure, pre-tightening bolts, elastic gaskets and piezoelectric ceramic stacks. A plurality of tilting pads are arranged on the inner arc surface of the bearing body and are matched with the bearing body through a spherical support; four radial grooves are formed in the outer arc face in the circumferential direction and are opposite to the centers of the four tile blocks respectively. A notch of the radial groove is connected with a cover plate, is internally provided with a piezoelectric ceramic displacement amplification mechanism and is connected with the spherical support through a positioning pin; a piezoelectric ceramic stack is arranged between a left boss and a right boss of the mechanism and is pre-tightened by a pre-tightening bolt and an elastic gasket. According to the invention, the inverse piezoelectric effect of piezoelectric ceramics is utilized, a vibration and non-linear suppression method is provided, an advanced control algorithm is matched, the piezoelectric ceramics stack is electrified and contracted, a displacement amplification effect is generated through a displacement amplification mechanism, the tile gap is finely adjusted, and the high-performance requirement of modern rotating machinery is met.

The invention provides an innovative design of a corrugated pipe damper integrated on a sliding main bearing aiming at the problems of transmission system abrasion and fatigue damage caused by vibration energy accumulation of the wind power main bearing under a complex wind load, and belongs to the technical field of wind power generation equipment. A traditional main bearing damping structure is low in energy absorption efficiency, insufficient in dynamic response and difficult to effectively suppress vibration. Through collaborative design of a corrugated pipe multi-stage laminated structure and a fluid energy dissipation channel, a composite mechanism for dynamically dissipating vibration energy is formed. The core of the damping device is composed of a corrugated pipe assembly, damping cavities and a main shaft adaptive structure, impact energy is absorbed through axial flexible deformation of the corrugated pipe, vibration attenuation is achieved in combination with reciprocating flowing of damping fluid in the multiple cavities, and low-frequency swing and high-frequency harmonic waves of a main bearing are synchronously restrained. According to the design, the bearing capacity is guaranteed, vibration transmission is remarkably reduced, the service life of the main bearing is effectively prolonged, the operation reliability of a unit is improved, and the damping requirement of a core transmission system of a high-power wind turbine generator is met.

The invention provides a thrust sliding bearing, a shaft system and a wind generating set. The thrust sliding bearing comprises a thrust disc, a thrust supporting disc and a first bearing bush. The thrust disc is arranged on the rotating shaft and protrudes outwards in the radial direction relative to the rotating shaft; the thrust supporting part is opposite to the thrust disc in the axial direction of the rotating shaft, and the bearing bush assembly is fixedly installed on the axial side surface of the thrust disc, makes sliding contact with the thrust supporting part and can rotate along with the thrust disc. According to the thrust sliding bearing provided by the embodiment of the invention, the bearing bush assembly is fixedly mounted on the thrust disc, when the bearing bush assembly needs to be maintained or replaced, the thrust disc can be driven to rotate through the rotation of the rotating shaft, and under the condition, the bearing bush assembly can rotate along with the thrust disc, so that the bearing bush assembly can rotate along with the thrust disc; when the bearing bush assembly needs to be replaced, the bearing bush assembly needing to be replaced can be rotated to the upper non-load point, so that the bearing bush assembly can be detached from the rotating shaft under the condition that the bearing bush assembly needing to be replaced does not bear load, and the operation and maintenance difficulty can be remarkably reduced.

The invention discloses a self-balancing tilting-pad thrust bearing, and relates to the field of sliding bearing design. In order to solve the problems that when an existing thrust bearing is applied to the working condition that a mechanical rotor rotates at a high speed, the axis of the rotor is likely to deflect due to machining quality, self vibration and the like, then a bearing bush of the thrust bearing is stressed unevenly, unbalance loading is generated, and the service life of the thrust bearing is shortened. A double-layer balance block structure is adopted to automatically adjust the stress state of the thrust pads, so that each thrust pad is in uniform contact with the thrust disc, uniform stress among the thrust pads is realized, and the dynamic stability of a mechanical rotating system is improved; the thrust bearing structure can automatically adjust the problem of unbalanced stress between tilting pads of a sliding thrust bearing caused by manufacturing errors, assembly errors and stress states, the reliability and maintainability of the thrust bearing are improved, and the service life of the thrust bearing is prolonged. The invention is suitable for the technical field of thrust bearings.

[Bearing device with integrated electrical insulation, in particular for an electric motor or machine] This bearing device comprises a bearing 10 provided with a first ring 12 and a second ring 14 capable of rotating relative to each other. The device comprises at least one insulating sleeve 22 mounted on the second ring 14 of the bearing and provided with a bushing 24 and an insulating lining 26 overmolded on the second ring 14 and made of electrically insulating material. The bushing comprises a first axial flange 24a and a second axial flange 24b connected by a central radial core 24c. The insulating lining 26 covers at least the second axial flange 24b, the first axial flange 24a being radially offset relative to the insulating lining 26 on the side opposite the bearing 10. Reference: Figure 3

A system that reduces the amount of contaminants that enters a process chamber or air bearing via a movable shaft is disclosed. The movable shaft includes an outer shell made from a material having a low coefficient of thermal expansion. This allows the outer shell to be heated to sufficiently high temperatures to avoid condensation of contaminants on the shaft, while minimizing any change in the diameter of the shaft, which passes through an air bearing. The shaft may also have a temperature modification device disposed adjacent to the interior surface of the outer shell. In some embodiment, the shaft may include an inner liner. An insulative layer may be provided between the inner liner and the outer shell, such that the temperature of the outer shell does not cause the inner liner to thermally expand.

The batten type water lubricated bearing comprises a shaft sleeve and a plurality of composite battens which are installed on the inner wall of the shaft sleeve at intervals in the circumferential direction of the shaft sleeve, and the composite battens comprise the first battens installed in a bearing area of the bearing and the second battens installed in a non-bearing area of the bearing. A through type variable cross-section groove is formed in the side, away from the ship stern shaft, of the first batten in the length direction of the first batten, and the cross-section area of the variable cross-section groove is gradually increased from the bow to the stern. The invention further discloses an assembly method of the batten type water lubricated bearing. The first batten is arranged in the bearing carrying area and provided with the variable cross-section groove, so that the rigidity of the first batten is gradually reduced in the direction from the bow to the stern, axial gradient rigidity distribution is formed, the low-rigidity area at the stern end can adapt to deformation of the stern shaft to be adjusted in a self-adaptive mode, local stress concentration is reduced, and the stability of the stern end is improved. And a high-rigidity area at the bow end maintains necessary bearing strength, so that the axial load of the bearing is homogenized as a whole.

A bearing assembly for a cone crusher includes an inner slide bearing, an eccentric sleeve and an outer slide bearing arranged for supporting a lower portion 5 of a crushing head shaft. The inner slide bearing has a diameter D1 and an axial height H1 being defined from the inner slide bearing upper end to the inner slide bearing lower end. The outer slide bearing 40 has a diameter D2 and an axial height H2 being defined from the outer slide bearing upper end to the outer slide bearing lower end 40b. A ratio of the inner slide bearing axial height and its diameter H1 / D1 is in the range of 0.95 to 1.20. A cone crusher including the bearing assembly is also provided.

The invention relates to a ball joint (10) for a motor vehicle, in particular for a chassis of the motor vehicle, comprising: - a joint housing (1) having a joint opening in which a bearing shell (6) is arranged, - a ball pin (2) having a joint ball (4) and a pin (5), which is mounted with its joint ball (4) in the bearing shell (6) in an articulated manner and which projects with its pin (5) through the joint opening out of the joint housing (1), and - a sensor device for detecting wear, wherein the sensor device has a circuit arrangement (11) which is mechanically actuated by the joint ball (4) and which is arranged within the joint housing (1), wherein the circuit arrangement (11) can be transferred, due to wear, from a basic switching position in which an electrical circuit (21) of the circuit arrangement (11) is closed into at least two further switching positions.

A bushing for a steering column rake bracket assembly includes a flange portion. The bushing also includes a tubular segment having an inner wall defining a central hole and an outer wall. The outer wall of the tubular segment includes a first flat outer surface. The outer wall also includes a second flat outer surface. The outer wall further includes a first curved end surface connecting the first flat outer surface and the second flat outer surface. The outer wall yet further includes a second curved end surface connecting the first flat outer surface and the second flat outer surface.

The invention provides a motor bearing wear state estimation device, a motor bearing wear state estimation method, a motor bearing wear state estimation program and a shield pump, and the motor bearing wear state estimation device can estimate the wear state without manual mechanical operation intervention even if the driving condition changes. This motor bearing wear state estimation device (5, 5A) estimates the wear state of a bearing (32, 33) using a plurality of detection coils (C1-C8). The device is provided with: a storage unit (56, 56A) that stores a first learning model (M11, M21) and a second learning model (M12, M22); an acquisition unit (550) that acquires each signal; and an estimation unit (551) that estimates the wear state by inputting the first differential signal, the second differential signal, and the amplitude signal to a first learning model and inputting the thrust differential signal and the amplitude signal to a second learning model. The amplitude signal is a first amplitude signal generated on the basis of the detection signals of the first radial detection coil and / or the second radial detection coil, or a second amplitude signal generated on the basis of the first composite signal and the second composite signal.

Example thrust bearing apparatus includes: a thrust disk extending radially from the shaft, the thrust disk having a first side and a second side opposite the first side; a bearing housing surrounding the thrust disk and the shaft, the bearing housing having a first wall facing the first side of the thrust disk and a second wall facing the second side of the thrust disk; a first thrust pad coupled to the first wall of the bearing housing, the first thrust pad including a first plurality of serrations circumferentially arranged in a first pattern along the first thrust pad; and a second thrust pad coupled to the first side of the thrust disk, the second thrust pad including a second plurality of serrations circumferentially arranged in a second pattern along the second thrust pad.

The invention discloses a high-bearing-capacity self-lubricating sliding bearing and an assembling method thereof. The high-bearing-capacity self-lubricating sliding bearing comprises a bearing seat, a bearing cover and a bearing bush sleeve, wherein the bearing seat and the bearing cover are connected through a bolt; the bearing bush sleeve is tightly attached to the inner wall of the bearing seat and the inner wall of the bearing cover and is composed of two bearing bushes which are vertically spliced; the lining is connected to the inner wall of the bearing bush in a sliding mode and used for being in interference fit with an external rotating shaft and enabling the external rotating shaft to stably slide on the inner wall of the bearing bush, an oil slinger is connected to the middle of the outer wall of the lining in a sleeving mode, and oil slingers are symmetrically connected to the positions, close to the end face, of the outer wall of the lining in a sleeving mode, so that matched composite self-lubrication of the oil slinger and the oil slingers is achieved. And the lubricating unit is mounted on one side of the bearing seat and provides lubricating oil for the contact surface of the bearing bush and the bushing. The composite structure of the oil slinger and the oil slinger is used, so that internal lubricating oil can uniformly flow between the bushing and the bearing bush, and the service life of the whole sliding bearing is prolonged.

A sliding surface of a first sliding component and a sliding surface of a second sliding component slide against each other in an intersecting manner such that first positive pressure generation grooves and second positive pressure generation grooves at least partially overlap each other. The first positive pressure generation grooves include at least one groove that differs in a position of a terminating end portion from other grooves. The one groove includes a terminating end portion located closer to a sealed fluid space side than a terminating end portions of the other grooves and terminating end portions of the second positive pressure generation grooves.

The utility model discloses a double-swing thrust floating knuckle bearing which comprises a shaft seat and a shaft core, a shaft seat concave spherical surface part is formed on the upper side of the shaft seat, a shaft seat convex spherical surface part is formed on the lower side of the shaft seat, and the ball center of the shaft seat concave spherical surface part is consistent with that of the shaft seat convex spherical surface part; the shaft core vertically penetrates through the shaft seat, a shaft core convex spherical surface part and a shaft core concave spherical surface part are formed on the shaft core, the shaft core convex spherical surface part and the shaft seat concave spherical surface part are consistent in spherical radius and spherical center and are slidably attached to the shaft seat concave spherical surface part, and the shaft core concave spherical surface part and the shaft seat convex spherical surface part are consistent in spherical radius and spherical center and are slidably attached to the shaft seat convex spherical surface part; and the shaft core is spherically hinged on the shaft seat. The utility model provides an integral structure type knuckle bearing capable of bearing loads in multiple directions.

The spindle sliding bearing comprises a radial pad, a thrust pad and a bearing main body, the middle of the bearing main body is columnar, and the two sides of the bearing main body are conical tables; the radial pads are uniformly arranged in the middle of the through hole in the bearing main body in the circumferential direction, and the thrust pads are uniformly arranged on the conical tables at the two ends of the bearing main body in the circumferential direction. Compared with the prior art, the segmented sliding bearing is adopted, the conical surface radial pads and the inclined plane thrust pads are distributed in an array mode in the axial direction to form a multi-pad structure, and the pad replacement efficiency can be improved. The thrust pad installed in an inclined mode can bear radial loads and axial loads at the same time, and the overall bearing capacity of the bearing is enhanced while axial impact is borne.