830 results about "Slider bearing" patented technology

The invention relates to the field of mechanical equipment health management, in particular to a large sliding bearing fault detection and evaluation method, device and system. Comprising the following steps: collecting multi-source sensing data, and constructing a comprehensive data set; constructing a state space model based on a sliding bearing physical mechanism; the multi-source sensing data and the state space model are fused through Bayesian filtering, and hidden state parameter posterior distribution is dynamically estimated; generating a virtual fault sample by using a generative adversarial network in combination with a physical rule base; designing a Bayesian space-time sequence diagnosis model based on an attention mechanism, and generating fusion health state features; processing and fusing the health state features by using a degradation process model, and predicting the remaining service life of the bearing; and based on the health state, the fault probability and the remaining service life, setting multi-stage early warning threshold values, and triggering intelligent early warning. According to the method, the defect that a single model is insufficient in adaptability and generalization ability under complex working conditions is overcome, and the accuracy and reliability of fault detection are remarkably improved.

A wing for an aircraft, including a main wing and a slat assembly including a slat and at least one connection assembly movably connecting the slat to the main wing, such that the slat is movable between a retracted position and at least one extended position, such that the connection assembly has an elongate slat track, and the front end of the slat track is mounted to the slat, such that the rear end and / or the intermediate portion of the slat track are mounted to the main wing by a roller or slide bearing such that the slat track is movable along the track longitudinal axis, such that the connection assembly has a drive unit configured for driving the slat track, such that the drive unit includes a rotary actuator having at least one drive arm rotatably driven about a rotation axis and drivingly engaging the slat track.

The invention relates to a repeatedly detachable magnetic composite water lubricated bearing and a maintenance method thereof.The water lubricated bearing comprises a cylindrical bearing seat surrounding a ship stern shaft and a permanent magnet assembly detachably connected with the bearing seat, a cylindrical sliding bearing is arranged on the inner side of the bearing seat, a notch is formed in the outer side face of the sliding bearing, and the permanent magnet assembly is detachably connected with the bearing seat; the notch penetrates through the sliding bearing in the axis direction of the sliding bearing, a containing groove used for containing the permanent magnet assembly is defined between the notch and the inner side wall of the bearing seat, when the water lubrication bearing is arranged on the outer side of the ship tail shaft in a sleeving mode, the containing groove is located over the ship tail shaft, and the permanent magnet assembly is in sliding fit with the containing groove in the axis direction of the sliding bearing. According to the scheme, the permanent magnet is configured to be in a detachable form, and the permanent magnet can be conveniently maintained after being demagnetized, so that the maintenance cost of the water-lubricated bearing is reduced, and the load of the water-lubricated bearing can be reduced for a long time.

The invention particularly provides a thermal elastohydrodynamic lubrication reliability evaluation method for a wind power sliding bearing. The method comprises the following steps: acquiring evidence measurement combination parameters; converting the evidence measurement combination parameters into probability measurement combination parameters, and determining mean value data of the probability measurement combination parameters; constructing a sample collection center based on the probability measurement combination parameters, substituting the sample collection center into the thermal elastohydrodynamic oil film iteration analysis model, and outputting minimum oil film thickness data; constructing a quadratic polynomial response surface function based on the current oil film safety threshold value, and selectively updating the sample collection center based on the quadratic polynomial response surface function to enable the sample collection center to approach the maximum possible failure focal element; determining credibility data and likelihood data of thermal elastohydrodynamic lubrication of the wind power sliding bearing based on the maximum possible failure focal element; and changing an oil film safety threshold value, and circularly executing the steps to obtain a thermal elastohydrodynamic lubrication reliability analysis result of the wind power sliding bearing. The accuracy of reliability is ensured, and the calculation cost is reduced.

The invention discloses a sliding bearing health monitoring and equipment fault diagnosis system and method based on digital twinning, and relates to the field of fault prediction and health management. In order to solve the problems that in the prior art, the influence of bearing abnormity or a sub-health state on the health of an equipment shafting cannot be judged, and time accumulation fault prediction of the sub-health state on dynamic characteristics and abrasion of a liquid film cannot be quantified, bearing displacement and rotating speed are collected through an eddy current and rotating speed sensor; solving a Reynolds equation and an Archard wear equation through multi-physics field simulation coupling, and generating a sample library of pressure, film thickness, rigidity damping and wear loss; the displacement, the rotating speed and the load are mapped to liquid film parameters and dynamic characteristics in real time through a POD-Kriging reduced-order model; and based on the film thickness ratio and the 0.5 X frequency amplitude grading lubrication state, vortex motion early warning is triggered according to the rotating speed ratio, and bearing health state all-parameter monitoring and multi-stage safety early warning are achieved. The method has a good application prospect in the field of intelligent operation and maintenance.

The invention relates to a sliding wear performance evaluation method of a sliding bearing, a sliding wear testing machine and application. The method comprises the following steps: acquiring initial-state benchmark characterization of a sliding bearing sample, placing the sliding bearing sample at a test station of the sliding wear testing machine, outputting lubricating oil, collecting a process oil sample, and acquiring final-state characterization of the sliding bearing sample after the test is completed; on the basis of initial state benchmark characterization, process oil sample analysis data, final state characterization and working condition parameters applied by a sliding wear testing machine, the wear stage and the wear mechanism are analyzed, and the sliding wear performance of the sliding bearing is evaluated; a sliding shaft supporting module, a rotating power module, an oil supply lubricating module and a radial load pressurizing module are arranged on the testing machine matching platform; the method is applied to wear resistance evaluation of sliding bearings prepared by adopting different processes. According to the invention, the core working condition of the actual dynamic pressure bearing is accurately reproduced, the stability and durability of the test system are improved, and the occurrence, development and evolution process of wear is visualized and quantifiable.

The invention discloses a sliding bearing health management system and method based on vibration analysis, and relates to the field of sliding bearing health management, and the method comprises the steps: firstly obtaining an original vibration signal and a real-time working condition parameter of a sliding bearing, and carrying out the multi-domain feature extraction of the vibration signal after time sequence alignment and windowing processing; and then introducing a double-flow attention coding mechanism, performing deep interaction and joint coding processing on the extracted vibration multi-domain features and working condition feature vectors, and further performing adjustment and decoding reconstruction on the joint potential space representation by taking the real-time working condition feature vectors as dynamic conditions, thereby generating a theoretical healthy vibration mode under the current working condition. And comparing the vibration with the actual vibration to calculate the health index. In this way, dynamic self-adaption of the health assessment standard can be achieved, and therefore the accuracy and robustness of health management under complex and changeable working conditions are remarkably improved.

The invention belongs to the technical field of sliding bearings and protection thereof, and discloses a metal radial elastic sheath for a ceramic sliding bearing under a high-temperature working condition, and the sheath comprises an inner sheath and an outer sheath; the inner sheath sleeves the periphery of the ceramic bushing, is a thin-wall metal sleeve, and is provided with a plurality of spiral openings in the circumferential direction, so that the inner sheath generates elastic bending when being stressed in the radial direction and disperses stress in the annular range; the outer sheath is sleeved on the periphery of the inner sheath, helical teeth are uniformly distributed on the inner circumferential surface of the outer sheath, and the helical teeth apply centripetal acting force to the inner sheath through radial elastic deformation under assembly and high-temperature working conditions. Through flexible deformation of the spiral opening of the inner sheath and radial elastic pre-tightening fit of the helical teeth of the outer sheath, fastening fit can be maintained when a thermal expansion difference exists between the metal bearing seat and the ceramic bushing, stress concentration of the ceramic bushing is reduced, and the risk of axis drift is reduced.

[Problem] Reduction of the stirring resistance that arises in a motor in a coolant circulation system in which an oil-containing coolant circulates to cool and lubricate the motor.[Means of solution] A coolant circulation system 100 comprises: a motor 4 with a rotor 41, a stator 42, a rotating shaft 43 and plain bearings 44; a gas-liquid separator 12, which separates a coolant into CO2 and oil; a CO2 passage 22b, through which the CO2 separated by the gas-liquid separator is supplied to a gap between the rotor and the stator to cool the rotor and the stator; mixing channels 24a, through which a mixture of the CO2 and the oil, obtained by mixing the CO2 and the oil separated by the gas-liquid separator, is supplied to gaps between the rotating shaft and the plain bearings to lubricate the plain bearings; and mixing channels 24b, through which the CO2 supplied to the rotor and the stator from the CO2 channel 22b and the mixture of CO2 and oil supplied to the sliding bearings 44 from the mixing channels 24a are returned to the gas-liquid separator.

The invention belongs to the technical field of aero-engine design, and provides a sliding bearing lubrication gap prediction method based on a PINN neural network, and the method comprises the steps: generating a training data set of the PINN neural network, constructing the PINN neural network, employing a reverse mechanism of the neural network, calculating a partial differential operator through automatic differential, and carrying out the prediction of the lubrication gap of a sliding bearing. Customizing a dynamic pressure lubrication Reynolds equation into a loss function in a deep learning framework; and a prediction data set of the neural network model is generated, the trained PINN model and weight parameters are loaded, construction of a prediction model is completed, and an oil film pressure distribution curved surface is generated. According to the method, the accuracy of oil film pressure distribution calculation is remarkably improved, and meanwhile, the speed of numerical calculation can be remarkably increased.

The invention relates to a trunnion device adapting to the running posture of a floating body gate, the trunnion device is used for connecting a lock wall and the floating body gate, the trunnion device comprises a fixed support, a connecting mechanism and a movable support, the fixed support is fixedly connected with the lock wall, the movable support is fixedly connected with the floating body gate, and the connecting mechanism is fixedly connected with the fixed support. The fixed support is hinged to the movable support through a connecting mechanism. The connecting mechanism comprises a vertical shaft, a horizontal shaft, a knuckle bearing and a sliding bearing, a bearing seat is fixedly arranged at one end of the horizontal shaft, the knuckle bearing is arranged in the bearing seat of the horizontal shaft, the knuckle bearing is arranged on the vertical shaft in a sleeving mode, an outer ring of the knuckle bearing is in interference fit with the bearing seat, and the sliding bearing is arranged on the bearing seat. An inner ring of the knuckle bearing is in clearance fit with the vertical shaft, the fixed support is detachably and fixedly connected with the vertical shaft, a mounting hole is formed in the movable support, the sliding bearing is arranged at the end, away from the bearing seat, of the horizontal shaft in a sleeving mode, and the sliding bearing is detachably mounted between the horizontal shaft and the mounting hole. An outer ring of the sliding bearing is in interference fit with the mounting hole, and an inner ring of the sliding bearing is in transition fit with the horizontal shaft.

A vehicular rear slider window assembly includes a fixed window panel, a movable window panel, a frame portion fixed relative to the fixed window panel, and an opening through the fixed window panel. The movable window panel is movable along upper and lower rails of the frame portion between closed and opened positions. A slider bearing system includes a guide element disposed at least partially along the lower rail and a carriage disposed at a lower perimeter region of the movable window panel. The guide element includes a bearing element that is slidably and non-rotatably received at a bearing receiving portion of the carriage. The carriage moves in a direction parallel to a longitudinal axis of the bearing element when the movable window panel moves between the closed position and the opened position.

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.

The invention relates to the technical field of sliding bearing modification, in particular to an asymmetric modification method for a sliding bearing of a gearbox, which comprises the following steps of: S1, calculating to obtain a distribution curve h0 (x) of initial oil film thickness along the axial direction based on a determined working condition; s2, setting a target oil film thickness htarget; s3, if h0 (x) lt; if so, delta h (x) is equal to k1 (htarget < 0 > (x)), and delta h (x) is equal to k1 (htarget < 0 > (x)); if h0 (x) is greater than or equal to htarget, delta h (x) is equal to k2 (h0 (x)-htarget), k1 and k2 are preset constants, and k1gt; 1, 0lt; k2lt; k2lt; 1; s4, the delta h (x) is substituted into an oil film thickness expression, the oil film thickness expression is substituted into a Reynolds equation, an optimized oil film thickness distribution curve h1 (x) is calculated again, and if h1 (x) meets the uniformity requirement, an asymmetric modification curve is output; otherwise, repeating the step S3. And the uniformity of oil film thickness distribution can be improved.

The invention belongs to the technical field of wind power generation equipment, and discloses a sliding bearing, a wind power main gear box and a wind turbine generator. The sliding bearing includes a sliding layer. The sliding layer is deposited on the surface of the first member. When the first component and the second component rotate relatively, a lubricating oil layer is formed between the sliding layer and the second component, and the lubricating oil layer serves as a lubricating film with certain bearing capacity and can separate the sliding layer from the solid surface of the second component, so that dry friction is converted into liquid friction among molecules in the lubricating oil layer; the friction coefficient between the sliding layer and the second component is remarkably reduced, and therefore abrasion between the sliding layer and the second component is reduced. The sliding bearing has the advantages of being small in size, light in weight and good in economical efficiency. The sliding layer is made of the wear-resistant material and is deposited on the first component, so that the sliding layer forms a high-hardness and wear-resistant coating on the surface of the first component, and the service life of the sliding bearing can be prolonged.

The invention relates to the technical field of sliding bearing design in mechanical engineering, in particular to a sliding bearing multi-mode end-to-end intelligent design system based on a large model. Comprising a multi-modal input and feature recognition module, a high-fidelity performance prediction module, a structural parameter intelligent optimization decision module and a parametric modeling and multi-modal output module which are connected in sequence and form an intelligent design closed loop, and all the modules are seamlessly connected through data interfaces. According to the method, multi-modal input and a high-fidelity simulation closed loop are driven through a large language model, the sliding bearing design efficiency is remarkably improved, the technical threshold is greatly reduced, interaction between a natural language and a drawing is supported, and non-experts can complete high-performance design; full-process automation from requirements to drawings is achieved, and manual intervention errors are avoided; optimizing in a wide-area parameter space by using the large model reasoning capability to realize multi-target global optimization; and multi-modal input and output of texts, drawings and models are supported, and the engineering applicability is enhanced.

The invention belongs to the technical field of permanent magnet coupling assembly, and discloses a permanent magnet coupling rotor folding tool and an axial force calculation method thereof. The permanent magnet coupler rotor folding tool comprises a cast iron floor, a T-shaped nut block, a sliding bearing seat base, a screw rod, a shaft clamp spring, a sliding bearing seat, an inner rotor supporting flange, a permanent magnet coupler inner rotor, a permanent magnet coupler outer rotor and an outer rotor supporting seat. According to the calculation method, a magnetic force analysis model between a pair of cuboid permanent magnets is taken as an entry, and a magnetic force action principle is mapped between a pair of permanent magnet rings formed by alternately arranging N-S pole paired permanent magnets by virtue of a coordinate transformation and vector superposition method; meanwhile, the influence of a permanent magnet machining and assembling process and a rotor hub material is comprehensively considered, and the axial acting force at different assembling positions when the inner rotor and the outer rotor of the permanent magnet coupler are closed is accurately calculated; the method is clear in solving thought and high in speed, provides theoretical reference for the actual assembly process, and is a method with engineering universality and convenience.

A power tool including a housing and a motor mounted in the housing and operatively connected to a tool holder arranged to hold a cutting tool bit. At least one guide post has a longitudinal axis slidably mounted to the housing such that the housing is moveable in a direction parallel with the longitudinal axis between a retracted position and a plunged position. A base portion is fixed to the at least one guide post and a slide bearing is mounted between the housing and the at least one guide post. The slide bearing is slidable with respect to the at least one guide post when the housing moves between the retracted position and the plunged position. The slide bearing includes at least one dampening element arranged to dampen movement of the at least one guide post with respect to the housing in a direction perpendicular to the longitudinal axis.

The invention discloses a critical current nondestructive testing device for a joint-free high-temperature superconducting tape. The critical current nondestructive testing device comprises a testing tape reel, a fixing plate, a testing tape reel motor rotating shaft, an air heater, a tension sensor, a wire guide wheel, a magnetizing device, a double-hole Hall sensor, a liquid nitrogen Dewar and the joint-free high-temperature superconducting tape. The test tape reel is used for placing the joint-free high-temperature superconducting tape; the testing tape reel motor rotating shaft is used for connecting the motor and the testing tape reel, and the air heater is used for blow-drying the tape to prevent the surface of the superconducting tape from freezing. The tension sensor is used for carrying out real-time and on-line monitoring on the tension applied to the superconducting tape. The wire guide wheel is of a bearing supporting structure and comprises a built-in deep groove ball bearing or sliding bearing. And the magnetizing device is used for magnetizing the high-temperature superconducting tape. The double-hole Hall sensor can detect magnetic field distribution on the surface of the magnetized strip. The double-hole Hall sensor is provided with a double-hole structure, and the slit strip is detected through the wire passing double holes.

The invention relates to the technical field of high-end equipment design and intelligent manufacturing, and discloses a method, system and equipment for determining the lubricating performance of a sliding bearing and a medium. The method comprises the following steps: acquiring geometric parameters, working condition parameters and lubricant parameters of the sliding bearing, and establishing a Reynolds equation for describing an oil film flow field of the sliding bearing; representing a function for describing the oil film pressure of the sliding bearing through a neural network; establishing a loss function according to the satisfaction degree of the output of the neural network to the physical constraint, the boundary constraint and the load constraint of the sliding bearing; taking the eccentricity rate and the load angle of the sliding bearing as training parameters of a neural network, training the neural network by adopting a loss function, and continuously updating the training parameters in the training process; and determining the oil film pressure of each space point of the sliding bearing through the trained neural network, and determining the lubricating performance of the sliding bearing according to the determined oil film pressure and training parameters used by the trained neural network so as to overcome the solving problem of a numerical method.

The invention relates to the technical field of valves, in particular to an eccentric rotary valve which comprises a valve body, an upper valve rod, a lower valve rod rotationally arranged in the valve body and a valve element located in the valve body, the valve element is fixedly provided with an upper shaft diameter coaxially fixed to the upper valve rod and a lower shaft diameter coaxially fixed to the lower valve rod, and a valve seat and a limiting piece are arranged in the valve body; an upper stuffing box is arranged on the inner wall of the valve body, sealing stuffing is arranged on the inner wall of the valve body, an upper sliding bearing is jointly arranged on the peripheries, close to each other, of the upper shaft diameter of the upper valve rod and the upper shaft diameter of the valve element in a sleeving mode, and a stuffing pressing sleeve used for blocking a gap is fixedly arranged on the inner wall of an opening, facing the outside, of the upper stuffing box; the possibility that medium thrust borne by the valve element is conducted to the upper valve rod and the lower valve rod is effectively reduced, valve element position change caused by medium impact is greatly reduced, and the situation that the valve element deviates, and the valve rod additionally bears the medium thrust is avoided.

The invention provides a sliding bearing oil film thickness obtaining method and device, and the method comprises the steps: building a micro-contact roughness model of a sliding bearing, and obtaining the contact pressure and contact area of a shaft of the bearing and a bearing bush rough peak according to the micro-contact roughness model; establishing a wear model of the sliding bearing, and obtaining the wear depth hw of the sliding bearing according to the wear model, the contact pressure and the contact area; obtaining the elastic deformation hE of the sliding bearing; according to the included angle between the axis of the sliding bearing journal and the center line of the bearing and the included angle between the circle center connecting line of the front and rear end faces of the journal and the center connecting line of the bearing and the journal, the journal inclination h '0 is obtained; and obtaining the thickness h of the oil film of the sliding bearing according to hw, he and h '0. According to the method, the influence of factors such as abrasion, elastic deformation and journal inclination in the working process of the bearing on the oil film thickness is fully considered, the oil film thickness of the sliding bearing can be accurately calculated and monitored, a theoretical basis is provided for design of the sliding bearing, and reliable operation of the bearing is guaranteed.

The invention discloses non-contact suspension stirring equipment and a stirring method thereof. The non-contact suspension stirring equipment comprises a basic fixing assembly, a main transmission assembly, a suspension supporting system and a suspension stirring mechanism. Equipment is fixed to the bottom of a liquid container through a flange and an isolation sleeve, after a motor adjusts the rotating speed to a proper stirring speed through a speed reducer, a main shaft of the speed reducer drives an input shaft to rotate through a coupler to drive a driving rotor shell and a magnet in the driving rotor shell to generate a rotating magnetic field, and a suspension stirring mechanism is driven to rotate through magnetic coupling of an inner magnet and an outer magnet. The suspension supporting system adopts the homopolar repulsion principle to enable the stirring mechanism to be suspended, a sliding bearing is formed through a silicon carbide wear-resistant shaft sleeve, and frictional wear is reduced. Non-contact power transmission between the main transmission assembly and the stirring mechanism is achieved, mechanical seal leakage and pollution are avoided, and the device has the advantages of being resistant to abrasion, low in shearing, low in energy consumption, stable in operation and the like, is suitable for occasions needing sterile and low-shearing stirring such as biological medicine, dairy products and beverages and has wide industrial application value.

The utility model relates to a tilting-pad sliding bearing of a steam turbine. The tilting-pad sliding bearing comprises a pad body, a pad block and an oil retainer, the multiple tile blocks are evenly distributed on the inner ring of the tile body in the circumferential direction, and the oil retaining rings are arranged on the two axial sides of the tile body. Two adjacent tiles are provided with mounting spaces in the circumferential direction of the inner rings of the tile bodies, shaft lubricating assemblies used for supplying oil to the positions between the tiles and the rotor are arranged in the mounting spaces, oil spraying holes are formed in the shaft lubricating assemblies, and the oil spraying holes are formed towards inlets in the oil inlet sides of the tiles; a jacking shaft device is arranged on the tile block at the bottom of the tile body inner ring and used for supporting the rotor; and the jacking shaft device adopts a one-way valve to supply oil to a jacking shaft oil bag through a tile block side wall channel. The bearing provided by the utility model can enhance the cooling effect of the pads, the temperature of an oil film is easier to adjust and control, and collision and abrasion caused by sudden loss of jacking oil pressure in the starting process can be avoided.

The invention provides a wind power gear box sliding bearing lubrication contact risk analysis method, which comprises the following steps: screening out a key working condition from a plurality of wind power working conditions, and obtaining an envelope sampling load spectrum containing a plurality of load grades in combination with the key working condition; constructing a wind turbine generator transmission chain multi-flexible dynamic model; the envelope sampling load spectrum containing the multiple load grades serves as an input load of the transmission chain multi-flexible-body dynamic model, the transmission chain multi-flexible-body dynamic model is solved, and the sliding bearing contact pressure and the sliding bearing contact time are obtained; and calculating the lubricating contact risk of the planet gear sliding bearing according to the sliding bearing contact pressure and the sliding bearing contact time. According to the method, the wind power working condition calculation number can be greatly reduced, key core working conditions can be rapidly identified and extracted, and the effect similar to full working condition simulation can be rapidly achieved; the method can effectively represent the potential contact risk of the sliding bearing under different working conditions, and is suitable for rapidly evaluating the influence of the working condition change on the lubricating contact of the sliding bearing of the wind generating set transmission chain.

The invention provides a biaxial acting sliding bearing assembly, and relates to the field of bearings, the biaxial acting sliding bearing assembly comprises a split type bearing seat, and the split type bearing seat comprises an upper bearing seat and a lower bearing seat; the split type bearing bush comprises an upper bearing bush body and a lower bearing bush body, the upper bearing bush body and the lower bearing bush body are arranged in the upper bearing seat and the lower bearing seat respectively and jointly form a bearing hole used for containing a rotating shaft, and the split type bearing bush further comprises a fastening device, a positioning device, an anti-impact assembly and a self-lubricating mechanism. Through the arrangement of the anti-impact assembly, efficient hydraulic buffering and vibration reduction are achieved. According to the assembly, sudden axial impact is converted into controllable hydraulic flow and damping dissipation, damage of impact loads to a bearing bush and equipment is greatly reduced, the operation stability of the bearing under the severe working condition is remarkably improved, the service life of the bearing under the severe working condition is remarkably prolonged, and the problem that in the prior art, the impact resistance is insufficient is solved; and automatic lubrication which is synchronous with the rotating speed and on demand is realized.

The invention relates to the technical field of through-flow turbines, and particularly discloses a through-flow turbine control ring auxiliary sliding bearing and a through-flow turbine. An auxiliary sliding bearing for a control ring of a tubular turbine comprises an anti-wear block and an anti-wear part arranged on the same side as the anti-wear block. The anti-wear block is in sliding fit with the anti-wear part; the anti-wear block and the anti-wear piece are respectively arranged on the control ring and the guide vane outer ring; according to the invention, the connection between the control ring and the guide vane outer ring can be more reliable, and the deflection of the control ring caused by the abrasion of the steel balls on the control ring and the guide vane outer ring groove can be effectively avoided.

The utility model relates to the technical field of sensor detection, in particular to a high-precision current sensor rapid testing tool which comprises a bottom plate, the upper end of the bottom plate is fixedly connected with a first fixing plate, one side of the first fixing plate is rotatably connected with a first threaded rod through a sliding bearing, and the first threaded rod is rotatably connected with a first threaded plate. The lower end of the first threaded plate is fixedly connected with a first sliding block, and the first sliding block is slidably connected with a first sliding rail. The positioning device has the function of ensuring that the clamping device can quickly and accurately move to a designated position, high-precision position adjustment is achieved through a precise sliding rail and a thread transmission system, so that the precise positioning requirement under different operation requirements is met, the operation speed is increased through the clamping device, and the working efficiency is improved. And the material processing accuracy is greatly improved, so that all steps from material grabbing to final test point placement can be efficiently and accurately completed.

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.