1382results about "Bearing assembly" patented technology

The invention relates to the technical field of bearings, and provides a hydrostatic bearing gas supply system which comprises a first gas supply subsystem and a second gas supply subsystem, the first gas supply subsystem comprises a first pipeline, a first check valve, a first reaction mechanism, a second reaction mechanism and a degassing structure, and the first reaction mechanism, the second reaction mechanism and the first pipeline are sequentially connected; a reactant is arranged in the first reaction mechanism, a catalyst is arranged in the second reaction mechanism, and the first check valve and the degassing structure are arranged on the first pipeline; the second gas supply subsystem is connected with the first pipeline; when the gas source is cut off, the reactant and the catalyst are subjected to chemical reaction in the second reaction mechanism to generate water vapor and oxygen, the degassing structure is used for consuming the oxygen and generating superheated steam, and the superheated steam enters the hydrostatic bearing. The air supply system for the hydrostatic bearing provides the pure water vapor working medium for the hydrostatic bearing, so that the normal operation of the hydrostatic bearing is ensured, and the hydrostatic bearing is prevented from being damaged.

The invention discloses a magnetic adjustment water lubricated bearing and a bearing support control method, which are applied to a large ship propulsion shaft system, and comprise a bearing shell, an electromagnetic excitation module, a batten, a sensor module, a power supply driving module and a control system, a plurality of mounting grooves are formed in the bearing shell; an electromagnetic excitation module is arranged in each mounting groove and generates a variable magnetic field with set intensity; a plurality of magnetically soft alloy segments are arranged on the batten, the magnetically soft alloy segments correspond to the electromagnetic excitation modules one to one, and a magnetic field acts on the magnetically soft alloy segments to generate electromagnetic attraction force; the control system independently controls the excitation current of each electromagnetic excitation module according to data of the sensor module, and generates magnetic fields with different intensities to act on soft magnetic alloy areas at corresponding positions, so that precise control of local supporting rigidity and lubricating gaps of the water-lubricated bearing is realized, unbalance loading and abnormal wear risks are effectively reduced, and the service life of the water-lubricated bearing is prolonged. And the adaptive capacity of the bearing under low-speed heavy load and dynamic disturbance is improved.

The invention relates to the technical field of bearings, and provides a hydrostatic bearing air supply system capable of improving transient bearing capacity, which comprises a first air supply subsystem and a second air supply subsystem, the first gas supply subsystem comprises a first pipeline, a first switch valve, a reaction mechanism and a degassing mechanism, reactants are arranged in the reaction mechanism, the reaction mechanism is communicated with the first end of the first pipeline, the second end of the first pipeline is used for being communicated with the hydrostatic bearing, and the first switch valve and the degassing mechanism are both arranged on the first pipeline; the degassing mechanism is positioned between the reaction mechanism and the first switch valve; the second air supply subsystem is used for communicating with the hydrostatic bearing through a first pipeline; the first switch valve is used for being opened under the condition that the hydrostatic bearing is impacted, so that water vapor in the hydrostatic bearing enters the reaction mechanism to be chemically reacted with reactants, and water vapor and oxygen are generated; the degassing mechanism is used for consuming oxygen and generating superheated steam. Normal operation of the hydrostatic bearing can be guaranteed, and the hydrostatic bearing is prevented from being damaged due to rotor collision.

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 discloses a three-coordinate measuring machine, which comprises a first guide rail; the second guide rail is parallel to the first guide rail; the two ends of the cross beam are movably connected with the two guide rails through a first connecting assembly and a second connecting assembly, and at least part of the cross beam is located in the space between the first guide rail and the second guide rail; the driving unit comprises a first driving mechanism and a second driving mechanism which are assembled to the first connecting assembly and the second connecting assembly correspondingly and used for driving the cross beam to move synchronously along the first guide rail and the second guide rail. The sliding frame is movably connected to the cross beam; the Z-axis assembly is assembled on the sliding frame; the gravity centers of the cross beam, the sliding frame and the Z-axis assembly are coplanar with the top faces of the two guide rails. The invention provides a three-coordinate measuring machine, which ensures the operation stability of a cross beam.

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.

The invention relates to a permanent magnet synchronous host bearing state detection method and system, and the method comprises the steps: 1, enabling a sharp end of a special measurement rod to directly contact with the surface of a host bearing end cover, and collecting an audio signal and a sound wave signal in the operation of a bearing in real time; secondly, the elevator is made to operate under the three different load working conditions of full load, 50% load and no load, and bearing operation signals under all the working conditions are collected; and step 3, transmitting the collected signals to an intelligent AI analysis platform for preprocessing and feature extraction. According to the invention, the intelligent decision-making system can generate a gradient maintenance scheme considering economy and reliability based on an optimization algorithm of reinforcement learning, effectively prolongs the service life of the bearing, reduces the maintenance cost, guarantees the data safety and traceability through the application of the block chain technology, achieves the collaborative diagnosis and knowledge sharing of cross-brand equipment, and improves the reliability of the bearing. The method has remarkable advantages in the aspects of improving the equipment reliability, optimizing the maintenance strategy, reducing the operation and maintenance cost and the like.

The invention relates to the technical field of bearings, and provides an anti-impact hydrostatic bearing air supply system which comprises a first air supply subsystem and a second air supply subsystem, the first air supply subsystem comprises a first pipeline, a first check valve and a reaction mechanism, the reaction mechanism is connected with the first pipeline, and the first check valve is arranged on the first pipeline; the second gas supply subsystem is connected with the first pipeline and is used for being connected with the hydrostatic bearing; the reaction mechanism can generate chemical reaction when the hydrostatic bearing bears strong external impact, and water vapor is generated and enters the hydrostatic bearing. According to the anti-impact air supply system for the hydrostatic bearing, when the hydrostatic bearing bears severe impact, chemical reaction occurs in the reaction mechanism, a large amount of high-temperature and high-pressure water vapor is generated, the water vapor pushes the first check valve to be opened so as to enter the hydrostatic bearing, the bearing capacity of the hydrostatic bearing is improved, and collision between the rotor and the hydrostatic bearing is avoided.

To provide a bearing device and a spindle device that can accurately measure a machining load and a preload on each bearing.SOLUTION: A bearing device 50 comprises a first outer ring spacer 6g arranged between an outer ring 5ga of a bearing 5a and an outer ring 5gb of a bearing 5b, a housing 3 for fixing the outer ring 5ga of the bearing 5a and the outer ring 5gb of the bearing 5b, a second outer ring spacer 7 arranged between the outer ring 5gb of the bearing 5b and the housing 3, a first strain sensor 11, and a second strain sensor 8. The first strain sensor 11 is fixed to the first outer ring spacer 6g, which is located on a path through which a preload is transmitted to the bearing 5a and the bearing 5b. The second strain sensor 8 is fixed to the second outer ring spacer 7, which is not located on the path through which the preload is transmitted to the bearing 5a and the bearing 5b.SELECTED DRAWING: Figure 2

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.

A discharge device for discharging electric currents from a rotor part of a machine, said rotor part having a shaft, the discharge device comprising an axially displaceable contact element, which is at least partly accommodated in a guide, for forming an electroconductive sliding contact between a sliding contact surface of the contact element and a shaft contact surface of the shaft, the sliding contact surface being provided for forming the sliding contact, the contact element being electroconductively connected to the guide and / or a retaining element of the machine, and the contact element being prestressed towards the shaft contact surface by means of a spring element, the contact element being at least partly wetted with an oily fluid, in particular at least in the area of its sliding contact surface.

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 provides an aviation opening, supporting and closing locking mechanism and method. The aviation opening, supporting and closing locking mechanism comprises a side guide rail body, a base, a supporting lock sleeve and a supporting lock hook assembly. When the side guide rail body rotates to a horizontal closed state, the supporting lock sleeve and the supporting lock hook assembly are clamped and fixed to achieve locking. And when the side guide rail main body rotates to an open supporting state, the bottom surface of the supporting lock sleeve is supported on the top surface of the supporting lock hook assembly to realize stable supporting. The device is small in structural size, light in overall weight, convenient to operate and convenient to install, the requirements for rapid overturning opening and rapid closing locking of the side guide rail can be met, the buffering function is achieved in the closing process, and safety is improved. The device is complete in overall function, reliable in structure, high in man-machine work efficiency and low in failure rate.

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.

The invention discloses a slewing bearing with three rows of rollers, a detection device, a detection method and an assembly method.The slewing bearing comprises an outer upper ring, an outer lower ring and an inner ring, and multiple sets of axial long holes are formed in the inner ring; limiting components and connecting long pins are installed in the axial long holes respectively, and the limiting components and the connecting long pins in the multiple sets of axial long holes are arranged at intervals. Two groups of parallel radial holes are formed in the inner side of the inner ring, one ends of the two groups of radial holes are communicated with the axial long hole, and the other ends of the two groups of radial holes are respectively communicated with the upper retainer or the lower retainer; the limiting component comprises a positioning long bolt, and symmetrical conical sleeves are mounted on the positioning long bolt; the two groups of radial holes are arranged in parallel up and down and are respectively provided with an upper propping column and a lower propping column; the conical sleeve abuts against the upper abutting column and the lower abutting column. According to the slewing bearing with the three rows of rollers, the conical sleeves which are arranged in the circumferential direction abut against the corresponding upper abutting columns and the corresponding lower abutting columns respectively, and abut against the upper retainer or the lower retainer, so that the slewing bearing has better radial stability.

Disclosed is a bearing system (34, 72, 100) for a bicycle (1) comprising a bicycle frame (2), wherein the bearing system (34, 72, 100) forms a rotary joint of a wheel suspension and has at least one inner ring (36, 84, 102) and at least one outer ring (38, 76, 108) comprising a bearing element (40, 80, 82) arranged therebetween. According to the invention, the inner ring (36, 84, 102) forms a pre-assembled assembly together with the outer ring (38, 76, 108) and the bearing element (40, 80, 82). Also disclosed is a bicycle (1) comprising such a bearing system (34, 72, 100).

According to the plunger pump bearing inner and outer ring gap self-adaptive adjustment method and device, magnetic components distributed at intervals in the circumferential direction are embedded into the bearing inner ring, a magnetic flux detection unit corresponding to the magnetic components is arranged at the position, close to the periphery, of the outer ring, and the magnetic field intensity changes of the inner ring and the outer ring are monitored in real time; coil groups in one-to-one correspondence with the magnetic parts are also arranged in the outer ring and are used for generating a controllable magnetic field. The system collects magnetic flux data through the detection unit, judges deviation positions and offsets of the inner ring and the outer ring, controls the corresponding coil assembly to be connected with current according to the offsets, forms a magnetic field with the same or opposite polarity as the magnetic component, and dynamically adjusts the gap. The method can compensate eccentric wear of inner and outer rings caused by non-uniform stress of the main shaft, reduce the wear risk of the roller, improve the running stability of the bearing, prolong the service life of the pump body and optimize the performance.

A shaft grounding member for a rolling bearing, the shaft grounding member being mounted on a rolling bearing unit including the inner ring rotating type rolling bearing in which an outer ring is fixed to a housing and in which a shaft directly connected to a motor is fitted into an inner ring, the shaft grounding member includes: a spring plate including an annular portion and an elastic portion extending continuously from an inner peripheral side end portion of the annular portion to a center of the annular portion, the spring plate being made of a thin plate of a conductive material; and a soft conductive member mounted on a surface of the elastic portion on a side facing the rolling bearing. The soft conductive member is configured to abut against an end surface of the shaft. The spring plate includes a plurality of bent portions provided at a portion of the annular portion facing a side surface of the outer ring so as to be bent in an axial direction, the plurality of bent portions being deformed to apply a pressing force to the outer ring.

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.

The invention discloses a self-sensing intelligent thrust bearing based on a nano-generator and a state monitoring method of the self-sensing intelligent thrust bearing. The thrust bearing comprises a shaft ring, a seat ring, a rolling body, a retainer and a nano-generator sensing structure, wherein the rolling body and the retainer are arranged in an annular raceway between the shaft ring and the seat ring; obtaining a first voltage signal and a second voltage signal through a nano generator sensing structure; the state monitoring method comprises the following steps: acquiring a first voltage signal and a second voltage signal; respectively preprocessing the two paths of signals and then carrying out data-level fusion; dividing the fusion signal into a training set, a verification set and a test set, and training a data-level fusion 1D-CNN model; and inputting a to-be-tested signal into the trained model to realize intelligent classification of the bearing operation state. According to the invention, multi-source signal fusion sensing and real-time monitoring of the running state of the thrust bearing are realized, the structure is compact, the sensitivity is high, and the identification is accurate.

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 utility model provides an automobile hub bearing, and belongs to the technical field of automobile hub bearings. The problem that an existing automobile hub bearing is short in service life is solved. The automobile hub bearing comprises an outer ring, an inner cylinder is movably installed on the right side of an inner cavity of the outer ring, a right flange is welded to the right side of the surface of the inner cylinder in a sleeved mode, a cavity is formed in the right flange, and an installation bolt is arranged in an inner cavity of the cavity in a die-casting mode. The utility model has the advantages of long service life and the like.

According to the peeling expansion analysis method, whether the raceway ring is peeled or not and the shape of a peeling part are acquired, and the peeling expansion analysis is performed at least according to the acquired shape of the peeling part, the specification of the rolling bearing and the operation condition of the rolling bearing. The rolling element load acting on the rolling element when the rolling element passes through the exit portion of the peeling portion of the raceway ring is calculated in consideration of the shape of the peeling portion during degradation, the peeling expansion speed obtained in consideration of the shape of the peeling portion during degradation is calculated on the basis of the rolling element load at the exit portion of the peeling portion, and the rolling element load acting on the rolling element when the rolling element passes through the exit portion of the peeling portion during degradation is calculated on the basis of the peeling expansion speed. The relationship between the elapsed time and the shape of the peeling portion is calculated.

The present invention provides a shaft grounding member and a rolling bearing unit equipped with the shaft grounding member that suppress the generation of wear particles from conductive members or wear particles due to sliding contact between conductive members and mating materials, while also suppressing damage to the mating material, stably ensuring excellent conductivity, without forming new processing on the bearing, and without restrictions on the type of bearing, and can be used with existing bearings, and is space-saving and inexpensive. [Solution] The shaft grounding member for the rolling bearing is composed of an annular portion and an elastic portion that extends continuously from the inner circumference end of the annular portion to the center of the annular portion, and comprises a spring plate made of a thin sheet of conductive material and a soft conductive member attached to the side of the elastic portion facing the rolling bearing, the soft conductive member being able to contact the end face of the shaft. The spring plate is provided on the portion of the annular portion facing the side of the outer ring, bent in the axial direction, and has a plurality of bent portions that apply a pressing force to the outer ring by deforming themselves.

The utility model relates to the field of mechanical engineering, in particular to an oil storage micropore layer bearing with a dynamic lubricating function. The oil storage micropore layer bearing with the dynamic lubricating function can automatically and uniformly release lubricating oil when the temperature of the bearing is detected to be too high, reduces the requirement of manual intervention, and prevents abrasion and faults caused by high temperature. An oil storage micropore layer bearing with a dynamic lubricating function comprises a bearing seat, an outer ring and the like, and the inner side of the bearing seat is connected with the outer ring. The electromagnetic coil is powered on to enable the valve element to move, the telescopic spring is extruded and contracted, the valve element does not block the discharging port any more, lubricating oil is discharged to the position between the outer ring and the inner ring through the discharging port, and the lubricating oil can be automatically and evenly released when it is detected that the temperature of the bearing is too high; the requirement for manual intervention is reduced, and abrasion and faults caused by high temperature are prevented.