21 results about "Bearing design" patented technology

A high-temperature resistant lightweight composite material, its preparation method, and its applications are disclosed, relating to the field of composite material technology. This invention solves the problems of existing materials where it is difficult to simultaneously achieve high temperature resistance and lightweight, low structural efficiency due to the separation of heat protection and load-bearing design, insufficient temperature resistance and toughness of the sandwich layer, and difficulties and high costs associated with large-size molding. The material comprises an integrated co-cured outer heat-resistant layer, an intermediate transition layer, and an inner load-bearing layer. The outer heat-resistant layer uses a modified epoxy / cyanate copolymer resin as the matrix and a high-silica glass fiber and carbon fiber blended fabric as reinforcement, with fumed silica and carbon nanotube fillers incorporated into the matrix resin. The intermediate transition layer is polymethacrylamide foam. The inner load-bearing layer uses an epoxy-modified cyanate ester resin as the matrix and a carbon fiber biaxial plain weave fabric as reinforcement. This invention can be used in rocket fairings, hypersonic vehicle skins, spacecraft reentry capsule thermal protection structures, hypersonic missile shells, aircraft engine nacelles, or high-speed train front fairings.

The application belongs to the field of engine bearing design, and particularly relates to a special-shaped bearing structure, which comprises a bearing outer ring, an inner ring integrated shaft, rolling elements and a bearing retainer; the bearing outer ring, the inner ring integrated shaft and the rolling elements are coaxially arranged, and the rolling elements are arranged between the bearing outer ring and the inner ring integrated shaft; the bearing retainer is connected to the rolling elements, and the inner ring integrated shaft can be integrally connected with a corresponding engine shaft. The special-shaped structure of the integrated inner ring and shaft enables a large-size gear shaft to be adapted to a small-specification bearing for support, directly reduces the DN value of the bearing, greatly reduces the heat generation of the bearing during high-speed rotation, effectively avoids the bearing damage problem caused by excessively high temperature rise, and simultaneously eliminates the need for designing a complex bearing oil supply cooling system, thereby simplifying the overall matching design of the equipment and the difficulty of later maintenance.

The utility model discloses an axial collinear garden machinery drive mechanism belongs to garden machinery field, including power part, drive link part and machine head part. Core design is: power output, drive link part, machine head input and operation cutter four coaxial in same center axis, form full link axial collinear structure, drive link adopts outer tube + inner rod + bearing design, ensures that torque stable transmission, and machine head realizes 90 degree power reversal through bevel gear assembly, drives operation cutter work. This mechanism eliminates eccentric moment from structure, has the advantage that operation is stable, transmission efficiency is high, operation fatigue is low, effectively solves the safety hidden danger and power loss problem of existing high branch machine, is applicable to high branch chain saw, hedge trimmer and other garden equipment.

This utility model discloses a bearing assembly structure for a rotor motor, including a housing, a motor spindle, and a rotor. The housing houses a stator assembly and a rotor assembly arranged opposite to each other. The motor spindle is located inside the housing, and its output end is coaxially connected to the rotor to drive its rotation. A support base is located at the head of the housing, and a cover is mounted on the support base. The shaft of a DC brushless motor is connected to the air-jet spinning rotor assembly, transmitting the rotational power generated by the motor to the rotor. The motor speed can be precisely controlled by changing the input voltage or current to meet the needs of different spinning processes, improving production efficiency and yarn quality. It features high efficiency, fast response, and high stability. The bearing design provides a larger support area, significantly reducing vibration and offset of the motor spindle during high-speed rotation, thereby improving the concentricity and operational stability of the rotor.

The application discloses a spring-over double wishbone suspension structure based on a corner module, which comprises a steering knuckle connected with a wheel hub on one side; a connecting corner matched with the steering knuckle, the steering knuckle and the connecting corner having coaxial through holes; a driving mechanism, an output end of which is provided with an angular contact bearing, the Z-direction freedom of the angular contact bearing being limited through the steering knuckle and the connecting corner; an air spring installed above the connecting corner; an upper cross arm arranged in the middle of the connecting corner; and a lower cross arm connected with the steering knuckle through a ball hinge. The air spring is arranged above, and the angular contact bearing is designed, so that the stress of the spring can be effectively shared, the stability and responsiveness of the suspension system are improved, the impact caused by the uneven road surface can be more efficiently absorbed, especially when steering and emergency braking, the suspension system can show better control ability, the body roll and shaking are reduced, and the vehicle is more stable and stable when running at high speed and in complex road conditions.

This invention relates to the field of heavy-duty bearing design and application technology, specifically to a bearing creep control method and device based on variable interface performance. The device comprises an annular multifunctional variable interface layer between the bearing outer ring and the bearing housing. This interface layer is composed of stable anchoring units with high elastic modulus and high friction coefficient, and directional slip triggering units with low elastic modulus and low friction coefficient, periodically and alternately distributed along the circumference. The number of circumferential partitions is coprime to the number of bearing rollers, enabling directional, step-like triggering of controlled micro-creep. The surface of the interface layer is provided with a checkerboard or spiral groove network filled with a functional medium to achieve damping dissipation, lubrication protection, and stiffness regulation. An integrated grating displacement monitoring component is also included for graded judgment of creep state.

The utility model discloses a safe burglary -resisting door relates to the technical field of burglary -resisting door, the utility model discloses a burglary -resisting door body and the through groove : burglary -resisting door body is provided with the drawer groove corresponding with the through groove position, including: first slide rail, set up on the burglary -resisting door body, the number is two. The utility model discloses through the unique X type connecting mechanism and the coordination of many slide rail systems, forms stable load -bearing platform and line of sight shelter barrier when unfolding, effectively solved the privacy disclosure problem of traditional delivery mode, adopt the innovative embedded folding structure, through the accurate first slide rail, second slide rail and third slide rail system, make first board can be completely flush with burglary -resisting door body when closing, completely solved the problem of traditional external hanging type delivery device protruding door body, influence the beautiful problem, through the cooperation of T type guide slot and gyro wheel sliding block has guaranteed the smooth of sliding process, and the reinforcing rib and bearing design of X type connecting mechanism have effectively enhanced the structural strength.

To provide an improved adjustment device for sealing movable vehicle components with respect to the vehicle body, and to identify vehicles equipped with such an adjustment device. [Solution] The adjustment device (10) comprises a housing (16) disposed on a movable vehicle part or body, a drive assembly (12) having a drive unit (14), and an adjustment element (18) designed to be displaceable along a displacement axis relative to the drive assembly (12) by the drive unit (14), and having a joint bearing (19) at its free end designed to be disposed on the vehicle body or a movable vehicle part, wherein the adjustment element (18) extends through an opening (44) between the vehicle cavity (40) and the cavity (42) of the movable vehicle part housing the adjustment device (10), The system includes a sealing element (38) which is sealed and positioned within the adjustment element (18) and is designed to seal the opening (44).

The application provides a design method of a reverseable gas turbine sliding bearing tile oil supply device, which comprises the following steps: S1, giving design input; S2, determining the number n of oil supply pipes; S3, determining the diameter phi of the oil supply pipes; S4, determining the positioning size L and alpha of the nozzle; S5, determining the diameter d and the spacing L of the nozzle; S6, calculating the oil flow; and S7, processing the reverseable gas turbine sliding bearing tile oil supply device meeting the design. K The design method scheme is reasonable, the design flow is clear, the guidance is strong, and the efficiency of the reverseable gas turbine sliding bearing tile oil supply device is greatly improved. The application is used in the domestic reverseable gas turbine sliding bearing design for the first time, and has very important reference value in the future gas turbine sliding bearing design.

The application discloses a high-load roller bearing structure and material fatigue strength optimization and performance evaluation method, and relates to the technical field of bearing design and manufacturing. The method comprises the following steps: obtaining structure geometric parameters, heat treatment process parameters and chemical composition data of the bearing; calculating the hardening layer depth, surface hardness and residual stress distribution based on physical metallurgical rules; converting the microstructure features into the contact fatigue limit and stress correction factor; establishing a slice method contact mechanics model to solve the contact load distribution; taking the structure geometric parameters and heat treatment process parameters as double design variables, and taking the maximum fatigue life and the minimum heat treatment process cost as double objectives to construct a multi-objective optimization function; solving the Pareto optimal solution set by using a non-dominated sorting genetic algorithm; and evaluating the candidate schemes and generating an optimization report. The application solves the technical problem that the structure design and the heat treatment process are mutually separated and cannot be optimized in a cooperative manner in the prior art.

This invention discloses a bearing thermo-mechanical coupling analysis method based on finite element thermal networks, comprising the following steps: calculating the initial radial deformation of the bearing under assembly conditions and centrifugal force; considering fluid viscous friction, improving the bearing pseudo-dynamic analysis, and calculating the precise distributed heat generation of the bearing; using the finite element thermal network method, precisely applying heat sources to calculate the refined temperature field of the bearing, its shaft, and bearing housing; based on the discrete temperature field, calculating the comprehensive radial deformation of the bearing under assembly conditions, centrifugal force, and temperature rise, and updating the geometric relationship; updating the heat generation and temperature field through pseudo-dynamic analysis, and iterating through pseudo-dynamic distributed heat generation-temperature field-comprehensive deformation coupling until the lubricating oil outlet temperature converges; outputting the bearing kinematic and dynamic parameters and the bearing temperature field. This invention achieves precise positioning of the bearing heat source and refined temperature distribution of the bearing, its shaft, and bearing housing, providing theoretical guidance for precise thermal analysis in the design and application of high-speed ball bearings.

The utility model provides cylindrical roller bearing punch sheet -shaped retainer relates to bearing design technical field, including downside cover, retainer pillar, roller, upside cover, arc -shaped recess, adopt the retainer pillar of punch mode processing, the retainer pillar lower end is inserted on the riveting of downside cover, constitutes the retainer assembly of lower half, the retainer pillar clockwise side and anticlockwise side all are provided with roller pocket hole structure for inserting roller, the arc face outer wall of roller and the arc -shaped recess in the middle part of roller pocket hole structure are pasted, improve the positioning effect of roller rotation, guarantee its rotation stability, after the good roller is installed and is buckled upside cover on the retainer pillar upper end, under the action of external pressure machine, the pressure riveting fixed of retainer pillar upper end is carried out, need not the beam between pocket hole and pocket hole to mill cut processing, the pocket hole size formed is consistent, all roller center is strictly common circle, the roller stress is even when bearing rotates.

The present application relates to the technical field of bearing, in particular to a kind of ball bearing cage rivet selection evaluation method, the present application is according to bearing design parameter setting fixed load and rotating speed, the life of bearing raceway is calculated;Rivet stress is calculated by bearing dynamics and statics;On this basis, the setting that rivet is impacted twice in bearing rotation a round is proposed, rivet life is obtained based on material fatigue damage theory;After comparing with the life of bearing raceway, select appropriate rivet specification, so that rivet does not occur fatigue damage in bearing life cycle.The present application extends the traditional rivet static strength check to the analysis of bearing life system, so that rivet selection is more reasonable.The selection evaluation of cage rivet is included in the evaluation system of bearing system, so that bearing life theory is more perfect.

This invention relates to the fields of bearing design and mechanical transmission technology, specifically to a method and system for optimizing the load-bearing capacity of wheel hub bearing systems. It includes steps such as parameter acquisition, model construction, distortion correction, residual comparison, and iterative optimization. The system acquires geometric and multi-condition load parameters to construct a Hertzian contact reference model to determine the baseline stress field. Its core is the introduction of the ring structure compliance matrix and contact skew angle model to correct distortion and extract the theoretical residual distribution, then compares it with the actual residual distribution to determine the shape-correction compensation evaluation index. When the index does not meet the threshold, the system iteratively adjusts the micro-shape-correction parameters. This invention effectively eliminates macroscopic structural interference, solves the problem of difficulty in distinguishing the influence of multiple factors on the contact stress distribution, and provides a clear physical benchmark for shape correction.

This utility model relates to the field of semiconductor technology and discloses a guide roller for a grinding and cleaning device, comprising: a rotating shaft, two bearings, and a receiving housing. The rotating shaft includes a first connecting section and a second connecting section that are detachably connected. The first connecting end has two mounting positions spaced apart along the axial direction. The two bearings are respectively sleeved on the two mounting positions of the first connecting end. The receiving housing is sleeved on the two bearings to rotate synchronously with the bearings. This utility model achieves good rotational performance through the rotating shaft and the bearing structure mounted on the rotating shaft. The housing that receives the wafer can effectively ensure the normal rotation of the rotating shaft through such a rotating structure. Combined with the dual bearing design, it effectively disperses mechanical stress, thereby improving the synchronization between the guide roller and the wafer rotation.

This invention relates to the field of rolling bearing design and life assessment technology, specifically a method for calculating the life of an elliptical raceway bearing, comprising the following steps: S100, measured multi-point profile: obtaining a set of discrete points i of the measured profile of the raceway surface of the elliptical deformed raceway of the bearing to be assessed; S200, least squares fitting to an ideal ellipse: performing ellipse fitting on the discrete point set i to obtain an ideal ellipse, and determining the length of the major axis 2a and the length of the minor axis 2b of the ideal ellipse; S300, extraction of three points: extracting one endpoint A of the minor axis and two endpoints C1 and C2 of the major axis on the ideal ellipse; This transforms the complex geometric deformation problem into a change in the standard parameter of the bearing's internal clearance, thereby realizing the quantitative calculation of the life of the elliptical raceway bearing.

The present application relates to the testing technology of the electric performance of the motor bearing of the motor train unit, in particular to a device and method for testing the electric performance parameters of the lubricating oil film of the rolling bearing. The main contents of the technical scheme of the present application are divided into four parts: first, a test device for simulating multiple working conditions and establishing the lubricating oil film of the rolling bearing, which can simulate the actual operating environment of the motor bearing and establish the lubricating oil film of the bearing under dynamic conditions, and can provide a basis for evaluating the electric performance parameters of the oil film of the motor bearing and the insulation performance of the bearing; second, a structural unit and method for effectively testing the electric performance of the lubricating oil film are provided, which can accurately obtain the electric performance parameters of the lubricating oil film; third, a measurement equivalent circuit based on the insulating coating, bearing and lubricating oil film and a calculation method for the electric performance parameters of the oil film are provided, which can provide input parameters for the state of the oil film under the electrified condition and the design of the insulating bearing; and fourth, a reliability evaluation method for the insulation performance of the bearing is provided, which can provide a basis for product design.

The invention relates to a method for operating a bearing arrangement (10) and a bearing arrangement (10) for a rotor blade (4) of a wind turbine (1), comprising the bearing arrangement (10): - a rotor blade bearing (12) designed to mount the rotor blade (4) rotatably relative to a rotor hub (2) of the wind turbine (1), the rotation being about a first axis (z); - a bearing receptacle (14) attached to the rotor hub (2), which is designed to rotatably receive the rotor blade bearing (12), the rotation being about at least a second axis (y); - at least one actuator (16) configured to rotate the rotor blade bearing (12) about the second axis (y).

The utility model discloses a kind of small passenger car universal transmission joint three-pin shaft, including three-pin frame and the pin shaft being set on the outer wall of three-pin frame, the shaft neck position of three-pin frame corresponding pin shaft is provided with multi-stage boss, the end of pin shaft is provided with blind hole, bearing ring is installed to the outside of pin shaft;The surface of each group pin shaft and the inner wall of bearing ring are respectively provided with central raceway and two side edge raceways along circumference direction.The utility model is set up multi-stage boss, reduces stress concentration, improves connection structure strength, increases fatigue life;Blind hole can be set, and weight can be reduced, so as to reduce abrasion;Bearing ring adopts integrated bearing design, structure is simpler, the number of parts composition is less, improve reliability, and reduce cost;The design of net pattern lubricating oil flow channel is favorable to lubricating oil flow, realizes self-lubricating effect, improves lubricating effect by, further reduce abrasion to improve life;Overall reliability can be improved.