1794 results about "Thrust bearing" patented technology

The invention discloses an electromagnetically-supported hybrid magnetic thrust bearing structure and a suspension force design method, and provides a hybrid magnetic bearing structure design in which radial alternate magnetization is adopted in the axial direction, a permanent magnet bearing formed by stacking multiple layers of magnetic rings bears all axial thrust loads, and radial electromagnetic bearings are assisted at the two ends to maintain dynamic stability of a rotor. The performance requirements of high bearing capacity, low power consumption, good active control capability and high dynamic stability of the hybrid magnetic thrust bearing in a limited space are met; in order to solve the problems that an inner magnetic ring and an outer magnetic ring are not strictly centered due to the influence of machining precision, an assembly process, rotor eccentricity and the like during actual operation of a permanent magnet thrust bearing, additional unbalance load, dynamic unbalance load and the like are generated in the radial direction. The electromagnetic supporting suspension force design method comprehensively considers the radial unbalance load of the permanent magnet thrust bearing, the dynamic unbalance load of the rotor and the self-weight influence, effective calculation of the suspension force of the supporting rotor is achieved, and important technical support is provided for the hybrid magnetic thrust bearing structure and suspension force design iteration.

A disconnectable differential assembly has a reduced axial length and a side gear disconnectable from an axle shaft via a clutch unit. Various components of the disconnect mechanism are axially aligned and concentric to reduce the axial length. An output hub splined on the axle shaft and is actuatable, via an axially shiftable armature, into toothed engagement with the side gear via respective axially extending teeth. The output hub and armature include radially extending flanges that are axially adjacent and radially aligned with the teeth so that force is transmitted to the teeth at the same diameter. A thrust bearing is disposed between the flanges so that the output hub rotates relative to the armature. The side gear is supported for rotation on the axle shaft, and a bearing is disposed radially therebetween to improve radial alignment of the second side gear with the output hub.

The invention relates to the technical field of fault diagnosis, and discloses a scroll compressor thrust bearing fault diagnosis method and system based on artificial intelligence. The method comprises the following steps: acquiring an original vibration signal of the thrust bearing of the scroll compressor through a piezoelectric acceleration sensor array, and performing angle domain synchronization and modal decomposition on the original vibration signal to obtain a demodulated vibration signal; according to the demodulation vibration signal, extracting fault characteristic frequency spectrums of inner ring damage, outer ring crack, rolling body peeling and retainer deformation in the scroll compressor thrust bearing; extracting fault features from a time domain, a frequency domain and a time-frequency domain based on the fault feature frequency spectrum, and constructing a fault feature vector; and inputting the fault feature vector into an integrated learning model to carry out fault identification analysis to obtain a fault type and severity. According to the invention, the accuracy of fault diagnosis of the thrust bearing of the scroll compressor is improved.

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.

A centrifugal compressor includes a rotary shaft, an electric motor, an impeller, a thrust bearing, and a housing having a passage that includes a motor cooling passage and a bearing cooling passage. The housing includes an inner housing and an outer housing. The motor cooling passage is defined by the inner housing and the outer housing. The passage includes a branching passage through which cooling fluid is divided and flows into the motor cooling passage and the bearing cooling passage and a joining passage through which the cooling fluid flowing through the bearing cooling passage joins the cooling fluid flowing through the motor cooling passage. The motor cooling passage includes a guide wall that guides the cooling fluid flowing through the motor cooling passage.

The invention belongs to the technical field of mechanical transmission, and discloses a conductor ring and magnetic resistance array composite permanent magnet thrust bearing and a damping force calculation method. The conductor ring and magnetic resistance array combined type permanent magnet thrust bearing realizes the bearing of non-contact magnetic thrust through the combination of the eddy current ring and the magnetic group array. When thrust from a propeller at the stern end of a propulsion shafting acts, the rotor magnetic group array axially moves, axial traction force is generated between the rotor magnetic group array and the stator magnetic resistance array to counteract the thrust action from the axial direction, meanwhile, the magnetic group array cuts the vortex ring, induction damping is generated on the surface of the vortex ring, damping force is formed, and the vortex ring is driven to rotate. And therefore, the longitudinal vibration during transmission of the propulsion shafting is reduced, and the propulsion shafting system is more silent and stable during operation. In addition, the damping force calculation method does not need complex three-dimensional structure modeling and grid division, is simple in solution, high in universality and short in calculation time consumption, and has high engineering application practical value.

The invention discloses a multifunctional angle module test bench which is composed of a bench base, a load simulation device and a pavement simulation device. The bench base is provided with a lifting sliding column, and the height of a loading platform can be adjusted to adapt to suspension deformation; the load simulation device realizes vertical load adjustment by increasing or decreasing balancing weights; the pavement simulation device integrates a belt pulley shaft, a motor, a magnetic powder brake and a pressure oil cylinder, and simulates pavement resistance through belt rolling; during testing, the angle module body is fixed to a loading platform, tires make contact with a belt to achieve dynamic testing, a magnetic powder brake increases resistance torque for a main belt wheel shaft so as to simulate different road conditions, a motor drives the belt to test regenerative braking performance, and a pressure oil cylinder is matched with a thrust bearing to measure axial loads. The steering resistance and tire mechanical property test is completed by changing the included angle between the wheel and the belt motion direction; according to the invention, driving, braking, steering and suspension system testing functions are integrated, and multi-working-condition comprehensive performance detection is realized.

The invention relates to the technical field of speed reducers, in particular to a multi-stage coaxial speed reducer which comprises an outer cylinder, a first-stage gear ring and a second / third-stage gear ring are arranged in the outer cylinder, and a first-stage speed reducer, a second-stage speed reducer and a third-stage speed reducer are sequentially arranged in the outer cylinder. The first-stage planet carrier framework is axially fixed, and the second-stage planet carrier framework and the third-stage planet carrier framework axially float; gaskets / thrust bearings are arranged between stages to achieve axial supporting and friction reduction, and the last-stage three-stage planet gears adopt staggered-tooth gears to eliminate meshing clearances. Through the coaxial compact integrated design, the large reduction ratio and the compact structure are both considered; due to the lubricating circulation design of inter-stage antifriction supporting and self-adaptive rotating speed, the friction loss is greatly reduced, and the transmission efficiency is improved; the structure of staggered tooth clearance eliminating, elastic buffering and shaft system stabilizing effectively reduces gear abrasion and impact loads, remarkably prolongs the service life, has the advantages of being high in transmission precision, fast in response and stable in operation, and can be used for precise transmission, automobile active stabilizer bars and other scenes.

The invention relates to the technical field of thrust bearings, in particular to a preparation method of a tin-based babbitt metal bushing and the tin-based babbitt metal bushing. The preparation method of the tin-based babbitt metal bushing comprises the following steps that a transition layer containing tin is arranged on the surface of a thrust pad, plate-strip-shaped tin-based babbitt metal is arranged on the transition layer, pressure and ultrasonic waves are applied to the surface of the plate-strip-shaped tin-based babbitt metal, and welding is completed through ultrasonic pressure welding. According to the method, the tin-containing transition layer is arranged on the surface of the thrust pad, the thrust pad bushing is rapidly prepared through ultrasonic pressure welding, and element diffusion and hydrogen element escape among the bushing, the transition layer and the steel backing and atomic lattice distortion and electron movement between the babbitt metal bushing and the transition layer are promoted through the coupling effect of extrusion force and high-frequency vibration; the plate-strip-shaped tin-based babbitt metal is welded to the surface of the thrust pad to form the bushing, the prepared babbitt metal bushing coating is uniform and compact, the preparation technology is greatly simplified, and environment friendliness is achieved.

A fall-arrest device (1,26) for use during rope-climbing activities, the device comprising or including a housing (5) for rotatably receiving therewithin a brake wheel (11,30) supported on an axle (20), the housing including anchor means (3,4) permitting connection of the device to a user thereof, the brake wheel having peripheral teeth (17,29) adapted to, in use, engage with a mid-portion of an anchored safety rope (2), the housing being openable by a gate (5a) through which to receive part of the anchored safety rope and thereafter being closable to trap the safety rope between the teeth of the brake wheel and a rope bearing thrust surface (18,28) on or in the housing, the brake wheel having associated automatic locking means (23,24), preventing rotation of the brake wheel about the axle above a nominal rate of rotation, the brake wheel locking means being spring-biased (14) to a stored position when the brake wheel is stationary or rotates below the nominal rate during use, the brake wheel locking means (24) being movable from the stored position to an operable position in which it engages with one or more locking formations (23) preventing further rotation of the brake wheel about the axle, the brake wheel axle being drivingly secured at at least one end thereof to a respective pinion (13a, 13b) having teeth extending radially therefrom, the teeth of the or each pinion being engageable with a respective toothed rack (12a, 12b,27) fixed to the inside of the housing whereby to permit the brake wheel to assume a path of movement further towards the thrust bearing surface such that when rotation of the brake wheel exceeds the nominal rate and has been arrested, such that when the rate of rotation of the brake wheel relative to the anchored rope exceeds the nominal rate, the axle and brake wheel are progressively driven further towards the thrust bearing surface to thereby cause the teeth of the brake wheel to progressively bite into the rope and arrest downward movement of the device along the rope.

Provided is a turbo compressor including a compressed gas inlet through which a gas is sucked in, an impeller for compressing the gas introduced through the compressed gas inlet, a compressed gas outlet through which the gas compressed by the impeller is discharged to the outside, a compression unit including a compressed gas channel connected from the compressed gas inlet to the compressed gas outlet, a motor including a rotating shaft having an end coupled to the impeller, to rotate the impeller, a housing including a motor accommodation space for accommodating the motor, a cooling air channel provided to pass through the motor accommodation space and formed to circulate a cooling gas accommodated therein, a cooling water channel formed to circulate a cooling liquid capable of cooling the housing, and thrust bearings disposed at an end of the rotating shaft, wherein the cooling water channel includes bearing cooling water channels disposed within a predetermined distance from the thrust bearings to cool the thrust bearings. According to the present invention, the thrust bearings supporting the rotating shaft and the cooling gas accommodated in front air channels adjacent to the bearing cooling water channels may be very rapidly cooled.

The invention discloses a self-adaptive cutter system for brake disc machining. The self-adaptive cutter system comprises a cutter handle, a cutter disc, a cutting blade, a suspension sleeve, an electromagnet and a control system. The permanent magnet is embedded in the circular truncated cone section of the cutter handle, the suspension sleeve is circumferentially fixed to the cutter head through the flat key, the flat key is pasted with the strain gauge to detect cutting force in real time, and the electromagnet and the permanent magnet are oppositely arranged in the radial direction to form magnetic suspension supporting. And the control system adjusts the current of the electromagnet according to the strain signal, dynamically adjusts the radial rigidity and the suspension position of the cutterhead, and realizes axial-radial decoupling support in combination with the thrust bearing. In a preferable embodiment, the cutting blade realizes micron-order cutting depth adjustment through a piezoelectric ceramic driving gasket, the service life of the cutter is prolonged due to the alternative opening design of a cutter head mounting boss, and the problem of winding of a rotating lead is solved by a conductive slip ring assembly. Working conditions such as sand holes and hardness sudden change can be responded in real time, broadband vibration is restrained, the machining precision is improved, the service life of the cutter is prolonged, and the method is suitable for high-precision brake disc machining.

The invention discloses an air floatation lifting rotating platform, and belongs to the technical field of precise instruments, the platform comprises a base, a slide block and an objective table, the slide block maintains a suspension state in the base through gas power and can respond to an external load in the vertical direction to carry out position adjustment, and the objective table and the slide block are in isolated contact through a gas film. The objective table can rotate in a plane parallel to the surface of the sliding block, the sliding block comprises a shell, a thrust bearing is arranged on the upper portion of the shell, a radial bearing is arranged on the inner side of the thrust bearing, the objective table is in clearance fit with the upper surface and the lower surface of the thrust bearing to form a cavity, and the objective table is in clearance fit with the inner side of the radial bearing to form a cavity. The thrust bearing is provided with an air path for releasing high-pressure air to the cavity, and the objective table is connected with a motor. According to the invention, the contact friction is reduced, the lifting precision and the rotating precision are improved, and the wafer detection alignment efficiency is improved.

The embodiment of the utility model provides a storage tank bottom structure, a storage tank and a carrier rocket, the storage tank bottom structure comprises a shell and a top cover, the shell is of a hollow arc-shaped revolving body structure which is through in the front-back direction, the two ends of the shell are the small-diameter end and the large-diameter end respectively in the axis direction of the shell, and the small-diameter end of the shell is fixedly connected with the top cover; a propellant is arranged on the top cover; a plurality of protruding structures are evenly distributed on the outer side face of the shell in the circumferential direction in the axis direction of the shell. According to the technical scheme, the bottom structure of the thrust bearing type storage tank is simple in process, easy to manufacture in batches and beneficial to achieving light weight of a carrier rocket.

The utility model provides a two-stage compression magnetic suspension air compressor which comprises a compressor shell, a motor stator, a rotor, a first impeller assembly and a second impeller assembly, the first impeller assembly and the second impeller assembly can bear axial magnetic acting force, and the compressor shell, the motor stator and the rotor are sequentially arranged in a sleeved mode. The two ends of the rotor are rotatably connected into the compressor shell through magnetic suspension bearing sets, and the first impeller assembly and the second impeller assembly are oppositely and fixedly installed at the two ends of the rotor respectively. The magnetic suspension bearing set comprises a first thrust bearing part for generating first axial magnetic acting force on the first impeller assembly and a second thrust bearing part for generating second axial magnetic acting force on the second impeller assembly, and the direction of the first axial magnetic acting force is opposite to that of the second axial magnetic acting force. A conventional thrust disc structure can be omitted, so that the critical rotating speed of the rotor is increased, and the pressure value of compressed air of the magnetic suspension air compressor is effectively increased.

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.

The present invention relates to a thrust and torque measuring device for a model test of a ship. The purpose of the present invention is to provide a self-propelled dynamometer in the prior art in which a thrush and a torque generated on a single rotating shaft connected to a propeller are measured at the same time, resulting in an interference effect occurring between the thrush and the torque, and to provide a self-propelled dynamometer in which the thrush and the torque are measured at the same time, and to provide a self-propelled dynamometer in which the thrush and the torque are measured at the same time, and to provide a self-propelled dynamometer in which the thrush and the torque are measured at the same time. A thrust bearing for rotating while transmitting thrust applied to a shaft to a force cell and a coupling for determining whether or not the alignment state between shafts is abnormal are disposed between the force cell for thrust measurement and the force cell for torque measurement. The interference amount between thrust and torque data is corrected through a data processing board, and whether the shaft alignment state is abnormal or not is judged, so that the interference amount generated when thrust and torque are measured is corrected in a data post-processing mode, and the influence caused by the interference effect is reduced to the maximum extent. Therefore, the thrust and torque measuring device for ship model testing using data post-processing can improve the accuracy and precision of simultaneous measurement of thrust and torque.

A method, system and electronic device for regulating the top cover pressure of a vertical hydro-generator set, and a storage medium. The method comprises: setting a monitoring time window, and collecting thrust bearing pad temperatures at different time points within the monitoring time window; acquiring a top cover pressure influence factor set at each time point; inputting the top cover pressure influence factor set corresponding to each time point into a pre-built top cover pressure influence correction database for optimal matching to obtain a bearing pad temperature correction factor corresponding to each time point; using the bearing pad temperature correction factor corresponding to the same time point to perform temperature influence correction on the corresponding thrust bearing pad temperature so as to obtain a corrected thrust bearing pad temperature; and on the basis of a preset pad temperature threshold, performing over-temperature calculation on the corrected thrust bearing pad temperature at each time point.

The utility model belongs to the technical field of cutting arms, and particularly relates to an impact-resistant cutting arm for a hard rock heading machine. Comprising a cantilever cylinder; the cutting main shaft is installed in the cantilever cylinder, a self-aligning roller bearing, a thrust bearing and a cylindrical roller bearing are sequentially arranged between the cutting main shaft and the cantilever cylinder from front to back, a framework oil seal II is arranged behind the cylindrical roller bearing, and a framework oil seal I is arranged in front of the self-aligning roller bearing; the front end of the cantilever cylinder is provided with a floating sealing frame sleeved on the cutting main shaft, the front end of the floating sealing frame is provided with a floating sealing seat sleeved on the cutting main shaft, the floating sealing seat is provided with a mechanical labyrinth seal, and a floating seal is arranged between the floating sealing frame and the floating sealing seat; and the cutting head is fixed at the front end of the cutting main shaft. When the cutting arm of the hard rock heading machine is used for cutting rocks of which the compressive strength is more than 70MPa, the service life of the cutting arm is prolonged.

The invention relates to the technical field of orthopedic surgery, in particular to an orthopedic surgery tracer fixing device which comprises a base, a damping cover is fixedly connected to the surface of the base, two kirschner wire bodies are movably inserted into the base and the damping cover, a mounting groove is formed in the base, and the kirschner wire bodies are arranged in the mounting groove. A kirschner wire locking block is arranged in the center of the interior of the mounting groove, a bolt mounting block is movably connected to one side of the kirschner wire locking block, and a kirschner wire locking bolt is movably connected to one side of the bolt mounting block. The kirschner wire tracer is provided with a base, a kirschner wire body, a mounting groove, a kirschner wire locking block, a bolt mounting block, a kirschner wire locking bolt, a holder, a tracer body, an insertion hole, a movable groove, an adjusting rolling ball, an adjusting rod, a tightening seat, a tightening bolt, a second insertion groove, a positioning pin, a pressure spring, a snap spring and a thrust bearing. The device can be used for installing and fixing the tracer which is simple in structure, low in production and manufacturing cost, high in stability and not prone to damage.

A turbocharger capable of improving local oil supply and negative pressure oil leakage capacity relates to the technical field of turbochargers and comprises a thrust bearing plate arranged between a shaft seal and a thrust sleeve. Thrust oil wedges are arranged on the opposite side walls of the thrust bearing plate, an oil supply channel is formed in the thrust bearing plate and comprises a first oil collection cavity and a second oil collection cavity which are sequentially and annularly arranged from outside to inside, and first oil collection cavity oil outlet holes communicated with the first oil collection cavity are formed in the opposite side walls of the thrust bearing plate correspondingly. And the second oil collecting cavity oil outlet hole is communicated with the second oil collecting cavity. The thrust bearing solves the problem that in the prior art, oil supply is relatively thin in the area with high bearing capacity on the thrust surface of the thrust bearing; and in order to avoid the reliability problem of dynamic and static interference, a gap between a dynamic piece and a static piece forming a labyrinth structure needs to be designed to be large enough, so that the negative pressure resistance oil leakage of the labyrinth structure is limited.

The invention relates to the technical field of retainer machining, and discloses a retainer machining tool for a thrust bearing and a machining process thereof.The retainer machining tool for the thrust bearing comprises a tool body, the tool body comprises a base and an outer tire clamping cover, a first chip groove is formed in the position, corresponding to a centering claw, of a dustproof cover, and a second chip groove is formed in the position, corresponding to the centering claw, of the dustproof cover; the supporting seat comprises a cushion block installed on the base, and a second chip groove corresponding to the centering claw in position is formed in the cushion block. A plurality of first air blowing openings are formed in the first chip groove, and a plurality of second air blowing openings are formed in the position, corresponding to the second chip groove, of the dustproof cover. Scraps in the first chip removal groove and the second chip removal groove are cleaned through the first air blowing opening and the second air blowing opening; and moreover, by controlling opening and closing of the swing blades and adjusting the airflow in real time according to the machining state, the chip removal requirements of different machining stages can be accurately met, the pertinence of cleaning work is remarkably enhanced, and the energy utilization efficiency is greatly improved.

The invention discloses a large-scale double-impeller leaching stirring tank, and relates to the technical field of gold ore leaching stirring tanks, the large-scale double-impeller leaching stirring tank comprises a transmission part, a bridge part, a stirring part and a tank body part, the transmission part comprises a motor, a high-speed coupler, a speed reducer, a low-speed coupler, a rack and a bearing support; the bearing support comprises a main shaft, a bearing body, a thrust bearing, an upper self-aligning roller bearing, an upper gland, a lower self-aligning roller bearing, a lower gland and a half coupling; the stirring part comprises an upper end shaft, a lower end shaft, an upper hub, a lower hub and blades; a shaft end fixing device is arranged in the center of the bottom of the tank body part; an inflating device is arranged at the lower part of the tank body. The device is used for gold ore pulp leaching operation, the treatment capacity is large, ore flow movement is stable, ore pulp mixing is uniform, air enters the ore pulp through a special inflation device, the ventilation capacity is large, the structure is simple, air dispersion is uniform through blade stirring, and the leaching rate can be effectively improved.

The utility model relates to a dynamic and static pressure mixed thrust bearing structure which comprises a back plate, the back plate is of a hollow cylinder structure, a plurality of fan-shaped bosses are evenly distributed on the front face of the back plate at intervals in the circumferential direction, a gasket and a bottom foil are arranged between every two adjacent fan-shaped bosses, fan-shaped flat foils are arranged on the gaskets and the bottom foils, and pressure equalizing grooves are formed in the fan-shaped bosses. The pressure equalizing groove is an arc-shaped groove, air outlet holes are formed in the pressure equalizing groove, the air outlet holes are connected with air inlet holes through air supply flow channels, the air supply flow channels are located in the back plate, and the air inlet holes are located in the outer wall of the back plate. The dynamic and static pressure hybrid bearing provided by the utility model is of a multi-tile structure, and the flexible foils and the steps with the air inlet holes are distributed in a staggered manner. The working back pressure of the bearing can be improved through external high-pressure air supply of the air inlet holes, the dynamic pressure effect is improved, abrasion of the bearing during starting and stopping is avoided, and therefore the bearing capacity and rigidity of the bearing are improved.

The invention discloses a porous metal-based material grinding and polishing air floating spindle and a metal-based material preparation method, the grinding and polishing air floating spindle comprises a spindle rotating body and a spindle fixing piece, and the spindle rotating body comprises a thrust plate and a supporting shaft; the main shaft fixing piece at least comprises a motor cooling sleeve, and a stator outer shaft sleeve, a thrust bearing pad, a radial bearing and a thrust bearing seat which are sleeved on the outer surface of the motor cooling sleeve; a water channel is arranged between the motor cooling sleeve and the stator outer shaft sleeve. The radial bearing is clamped between the supporting shaft and the thrust bearing seat, and a radial bearing gap is formed between the radial bearing and the supporting shaft; the thrust bearing pad is arranged in a groove of the thrust bearing seat, and a thrust plate gap is formed between the thrust bearing pad and the thrust plate; and the thrust bearing pad and the radial bearing are made of a porous metal-based material. Surface grooving machining is omitted, self-excited vibration caused by cyclone of compressed air in a groove and unsmooth exhaust is avoided, and the porous metal-based material can prevent upper and lower thrust surfaces from being scratched or even locked due to falling of particles on the surface of the bearing pad.

A turbofan engine includes a fan and a fan actuation system. The fan has a plurality of fan blades. Each of the plurality of fan blades is rotatable about a pitch axis. The fan actuation system includes one or more actuators for rotating the plurality of fan blades about the pitch axis and one or more thrust bearings. The fan actuation system is characterized by a fan actuation system envelope in a range of 300 to 1860. The fan actuation system envelope is given byNFB×DFT×Mcruise(RTBNFB),where NFB is a number of the plurality of fan blades, DFT is a fan tip diameter of the plurality of fan blades, Mcruise is a Mach number of the turbofan engine at cruise operating conditions, and RTB is a thrust bearing radius of the one or more thrust bearings.

The invention belongs to a robot, and particularly relates to a high-strength bearing two-axis robot. According to the high-strength bearing two-axis robot, the bearing capacity of key nodes is enhanced through optimization design, and the overall structural strength and the anti-fatigue performance are improved. The high-strength bearing two-axis robot comprises a mounting frame and the like. A vertical moving mechanism is vertically mounted in the mounting frame, a rotary moving mechanism is arranged on a moving part of the vertical moving mechanism, and a clamping mechanism is mounted on the rotary moving mechanism. The extension arm is tensioned on the arc-shaped track through the clamping shaft, so that the stress of a rotating point of the swing arm is more balanced, the rotating point of the swing arm is prevented from being damaged, the service life of the swing arm is prolonged, the thrust bearing is connected between the swing arm and the lifting plate, and the thrust bearing is used for reducing the friction force of the swing arm during rotation and reducing the resistance of the swing arm during rotation; the service life of equipment is prolonged; the two-way telescopic rod is used for tensioning the end of the swing arm, and the weight borne by the end of the swing arm can be shared.

The utility model discloses an air floatation motorized spindle with a damping cavity on a rotating shaft flange, which comprises a rotating shaft shell, a thrust bearing is arranged at one end of the rotating shaft shell, a plurality of throttling air taps are arranged on the thrust bearing, a closed air cavity is arranged on the rotating shaft shell, an air inlet is arranged on one side of the closed air cavity facing the thrust bearing, and a damping cavity is arranged on the other side of the closed air cavity. A sealing jackscrew is arranged above the closed air cavity, the pressure of the closed air cavity is maximum at the corresponding moment through the throttling air nozzle and the air inlet, air in the closed air cavity is slightly compressed, the air in the closed air cavity is exhausted to generate oscillation when the closed air cavity is staggered, and air hammer excitation generated between the damping thrust bearing and the flange is disturbed by air oscillation. The effects of reducing spindle vibration and improving high-frequency harmonic waves are achieved.

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.

[Problem] To provide an axle driving device with a locking differential gear assembly, wherein the pressing force from the clutch pack does not act on the bearings of a differential case when the differential function is restricted.[Solution] The clutch pack includes a clutch housing, a first friction plate, a second friction plate, and a reaction plate, the clutch housing is engaged with the differential case relatively non-rotatably and axially movably, the friction plates are engaged with an axle and the clutch housing, respectively, relatively non-rotatably and axially movably and in a superposed manner, the reaction plate adjacent to the friction plates can freely press them, and the clutch housing is disposed opposite to the reaction plate to face a wall, and a first thrust bearing is disposed therebetween.