1823results about "Bearing cooling" patented technology

The invention discloses a saw chain guide plate lubricating system which comprises an integrally-formed guide plate body and is characterized in that a driven supporting structure is arranged at one end of the guide plate body, a rotating structure is installed on the driven supporting structure, and a transmission wheel is installed on the rotating structure; a saw chain guide groove is formed in the side face of the guide plate body. The guide plate body and the driven supporting structure are provided with an oil conveying channel, one end of the oil conveying channel is connected with an oil supply unit of the lumbering equipment, and the other end of the oil conveying channel makes contact with the rotating structure. Through the arrangement of the oil conveying channel, the service life of the driven end rotating structure is prolonged, the part, making contact with a tree, of the saw chain can be lubricated, and meanwhile the utilization rate of lubricating oil can be increased.

The invention provides a magnetic suspension rotating machine. The magnetic suspension rotating machine comprises a magnetic suspension bearing and a motor stator and rotor. In the axial direction, the thrust disc is arranged between the first axial stator and the second axial stator, a first thrust disc ventilation hole is formed in the thrust disc in a penetrating mode from one axial end face to the other axial end face of the thrust disc, and the first axial stator comprises a first radial outer side part and a first radial inner side part. One end, positioned on the other axial end surface of the thrust disc, of each first thrust disc vent hole is positioned between the radial inner side part II of the axial stator II and the rotor, and the other end, positioned on the axial end surface of the thrust disc, of each first thrust disc vent hole is opposite to the position of the coil slot I in the axial direction; the first thrust disc vent hole is not opposite to the magnetic pole position of the first axial stator; and the motor stator and rotor runners are respectively communicated with the first thrust disc ventilation holes. According to the magnetic suspension bearing, heat dissipation and cooling of the magnetic suspension bearing are improved, meanwhile, the influence on a magnetic suspension magnetic circuit can be avoided, and enough magnetic suspension supporting force is guaranteed.

The invention provides a magnetic suspension rotating machine. The magnetic suspension rotating machine comprises a magnetic suspension bearing, a motor stator and a rotor, in the axial direction, the thrust disc is arranged between the first axial stator and the second axial stator, a first thrust disc ventilation hole is formed in the thrust disc in a penetrating mode from one axial end face to the other axial end face of the thrust disc, and the first axial stator comprises a first radial outer side part and a first radial inner side part. One end, positioned on the other axial end surface of the thrust disc, of each first thrust disc vent hole is positioned between the radial inner side part II of the axial stator II and the rotor, and the other end, positioned on the axial end surface of the thrust disc, of each first thrust disc vent hole is opposite to the position of the coil slot I in the axial direction; the first thrust disc vent hole is not opposite to the magnetic pole position of the first axial stator; and the motor rotor flow channel and the first thrust disc ventilation hole are respectively communicated with the motor stator flow channel. According to the magnetic suspension bearing, heat dissipation and cooling of the magnetic suspension bearing are improved, meanwhile, the influence on a magnetic suspension magnetic circuit can be avoided, and enough magnetic suspension supporting force is guaranteed.

The invention relates to the technical field of bearings, in particular to a rotary table bearing internally provided with an oil cooling structure, which comprises a rotary table bearing and is characterized in that the rotary table bearing comprises an outer ring, and an inner ring is rotatably arranged in the outer ring; a rolling body used for supporting the outer ring and the inner ring and allowing the inner ring to rotate relative to the outer ring is arranged between the outer ring and the inner ring, a retainer used for keeping the position of the rolling body is movably connected to the rolling body, and an oil cooling channel used for the rotary table bearing is formed in the outer ring or the inner ring. An inlet and an outlet for cooling oil to enter the oil cooling channel are formed in the two ends of the oil cooling channel, a cooling pipeline is communicated with the position, located outside the rotary table bearing, between the inlet and the outlet of the oil cooling channel, an oil pump is communicated with the cooling pipeline, and a cooling assembly is arranged on the cooling pipeline. It is ensured that the bearing can still be effectively cooled under long-time and high-load operation, the service life of the rotary table bearing can be prolonged, and the maintenance cost and the replacement frequency are reduced.

The invention relates to the technical field of bearings, and discloses a ceramic angular contact ball bearing with high bearing capacity, the ceramic angular contact ball bearing comprises an outer ring, an inner ring, a rolling body, a retainer and an oil storage cavity, the outer ring is of a cylindrical structure, and the inner surface of the outer ring is in contact with the rolling body; the inner ring is positioned inside the outer ring, and the outer surface of the inner ring is contacted with the rolling body; and the rolling bodies are a plurality of spherical ceramic elements which are fixed and separated by the retainer. By optimizing the arrangement mode and material selection of the rolling bodies, the bearing has higher bearing capacity and anti-overturning performance under the high-load condition; the heat dissipation through holes are formed in the retainer, so that the heat dissipation performance of the bearing in the running process is remarkably improved, and the bearing failure risk caused by overheating is reduced; through the design of the oil storage cavity and the oil outlet micropores matched with the oil storage cavity, uniform supply of lubricating oil is achieved, and friction loss between the rolling body and the inner ring and the outer ring is reduced.

The invention provides a magnetic suspension rotating machine which comprises a magnetic suspension bearing, a motor stator and a rotor. A rotor air inlet flow channel and a rotor air outlet flow channel are arranged in the rotor. In the axial direction, the thrust disc is arranged between the first axial stator and the second axial stator, a first thrust disc ventilation hole is formed in the thrust disc in a penetrating mode from one axial end face to the other axial end face of the thrust disc, and the first axial stator comprises a first radial outer side part and a first radial inner side part. One end, positioned on the other axial end surface of the thrust disc, of each first thrust disc vent hole is positioned between the radial inner side part II of the axial stator II and the rotor, and the other end, positioned on the axial end surface of the thrust disc, of each first thrust disc vent hole is opposite to the position of the coil slot I in the axial direction; and the first thrust disc vent hole is not opposite to the magnetic pole position of the first axial stator. According to the magnetic suspension bearing, heat dissipation and cooling of the magnetic suspension bearing are improved, meanwhile, the influence on a magnetic suspension magnetic circuit can be avoided, and enough magnetic suspension supporting force is guaranteed.

The invention discloses an oil-cooled motor, and the motor comprises a housing which is of a cylindrical structure; the driving assembly is arranged in the shell and comprises a stator structure and a rotor structure; the circulating assembly is fixedly mounted on the outer side of the shell and used for filtering and cooling the oil medium discharged from the interior of the shell and pumping and injecting the oil medium back into the shell; the oil way assembly comprises a first oil guide pipeline and a second oil guide pipeline which are communicated with the circulation assembly, the first oil guide pipeline is arranged at the end of the shell in a penetrating mode and used for guiding the oil medium to the inner side of the stator structure and the rotor structure, and the second oil guide pipeline is arranged on the circumferential side wall of the shell in a penetrating mode and used for guiding the oil medium to the outer side of the stator structure. According to the oil-cooled motor, the overall integration level of the oil-cooled motor can be improved, and the cooling effect in the motor is improved, so that the motor efficiency is ensured.

The invention discloses an elastic support integrated bearing and squeeze film damper integrated structure with outer ring radial holes. The elastic support integrated bearing and squeeze film damper integrated structure comprises an elastic support integrated outer ring, a bearing inner ring, a retainer, a rolling body, a squeeze film damper, a bearing seat and the like. The elastic support integrated outer ring adopts the integrated design of a squirrel-cage type elastic support and the bearing outer ring, the radial size is reduced, the centering precision is improved, and an oil storage groove and a radial oil hole are formed in the outer side wall of the bearing outer ring of the integrated structure; the extrusion oil film damper is located on the outer side of the elastic support integrated bearing, and an oil film is communicated with a radial oil hole in the bearing outer ring, so that bearing lubrication and the extrusion oil film damper share a lubricating oil path; radial lubricating oil lubrication of the bearing is achieved through the arrangement of the radial oil holes, and the situation that the bearing is damaged due to lack of oil lubrication under the extreme working condition is avoided; meanwhile, the oil storage grooves and the radial oil holes can effectively promote flowing of lubricating oil in an oil film, formation of a dead cavity of the squeeze oil film damper is avoided, and the vibration reduction effect of the squeeze oil film damper is enhanced.

A gyroscopic roll stabilizer for a boat includes an enclosure mounted to a gimbal for rotation about a gimbal axis and configured to maintain a below-ambient pressure, and a flywheel assembly including a flywheel and flywheel shaft, with the flywheel assembly rotatably mounted inside the enclosure for rotation about a flywheel axis. The gyroscopic roll stabilizer also includes a motor operative to rotate the flywheel assembly and disposed inside the enclosure. A motor cooling circuit is configured to transfer heat away from the motor. The motor cooling circuit has a closed fluid pathway for recirculating cooling fluid therein. The fluid pathway includes a fluid channel jointly defined by the motor and the enclosure and having the cooling fluid therein. The gyroscopic roll stabilizer is configured to transfer heat away from the motor to the cooling fluid. Related methods are also disclosed.

A conical bearing includes a bearing sleeve, a bump foil, and a top foil. The bearing sleeve extends along an axis from a first open end to a second open end. The bearing sleeve has an axially tapered shape such that a first diameter of the bearing sleeve is greater than a second diameter of the bearing sleeve. An interior surface of the bearing sleeve has a non-circular profile. The bump foil is concentrically disposed within the bearing sleeve and includes bump foil pad segments extending circumferentially about the interior surface of the bearing sleeve. Each bump foil pad segment comprises a plurality of foil bumps and the plurality of foil bumps varies in stiffness along a circumference of the bump foil. The top foil is concentrically disposed within the bump foil and includes top foil pad segments extending circumferentially about an interior surface of the bump foil.

A gyroscopic roll stabilizer includes an enclosure, a flywheel assembly, a bearing, a motor, and a bearing cooling circuit. The enclosure is mounted to a gimbal for rotation about a gimbal axis and configured to maintain a below-ambient pressure. The flywheel assembly includes a flywheel and flywheel shaft. The bearing rotatably mounts the flywheel assembly inside the enclosure for rotation about a flywheel axis. The bearing has an inner race and an outer race. The inner race is rotationally fixed relative to the flywheel shaft, and the outer race is held rotationally fixed relative to the enclosure. The motor is operative to rotate the flywheel assembly. The bearing cooling circuit is configured to transfer heat away from the bearing by recirculating coolant along a closed fluid pathway. The gyroscopic roll stabilizer is configured to transfer heat away from the inner and / or outer race of the bearing to the coolant.

A gyroscopic roll stabilizer includes an enclosure, a flywheel assembly, a bearing, a motor, and a bearing cooling circuit. The enclosure is mounted to a gimbal for rotation about a gimbal axis and configured to maintain a below-ambient pressure. The flywheel assembly includes a flywheel and flywheel shaft. The bearing rotatably mounts the flywheel assembly inside the enclosure for rotation about a flywheel axis. The bearing has an inner race and an outer race. The inner race is rotationally fixed relative to the flywheel shaft, and the outer race is held rotationally fixed relative to the enclosure. The motor is operative to rotate the flywheel assembly. The bearing cooling circuit is configured to transfer heat away from the bearing by recirculating coolant along a closed fluid pathway. The gyroscopic roll stabilizer is configured to transfer heat away from the inner and / or outer race of the bearing to the coolant.

A gyroscopic roll stabilizer includes a gimbal having a support frame and enclosure configured to maintain a below-ambient pressure, a flywheel assembly including a flywheel and flywheel shaft, one or more bearings for rotatably mounting the flywheel inside the enclosure, a motor for rotating the flywheel, and bearing cooling system for cooling one or more bearings supporting the flywheel. The bearing cooling system enables heat generated by the bearings to be transferred through the flywheel shaft to a heat sink disposed within a cavity in the end of the flywheel shaft, and then external to the enclosure.

The utility model belongs to the technical field of guide rails, and relates to a high-temperature-resistant linear rolling guide rail structure. The guide rail comprises a guide rail body, and ball fixing sliding blocks are arranged on the two sides of the guide rail body. In the using process, the ball fixing sliding block is in rolling fit with the guide rail body through the ball piece, and when the ball fixing sliding block moves along the track of the guide rail body front and back, external air can enter the ball fixing sliding block through the air inlet type alignment heat dissipation communication assembly and the auxiliary air inlet part; the air inlet and outlet cooling structures are additionally arranged, air is fed into the ball pieces which continuously operate, the ball pieces and the contact face, matched with the ball pieces, of the guide rail body are rapidly cooled, a part of heat can be discharged from the bottom of the guide rail body through the inner side heat removal and dissipation structures, and the auxiliary heat dissipation effect is achieved; rapid heat dissipation can be achieved in the running process of the linear guide rail, the high-temperature resistance of the guide rail is improved, and the service life of the rail is prolonged.

The invention relates to a dynamic and static pressure mixed gas radial bearing, and belongs to the technical field of air bearings. The shaft sleeve is sleeved with the bearing seat, a limiting part is arranged outside the shaft sleeve, and a limiting groove is correspondingly formed in the inner wall of the bearing seat; in the radial direction, the bump foil assemblies are arranged between the shaft sleeve and the bearing seat, and in the circumferential direction, the bump foil assemblies are arranged between the limiting parts at intervals; a plurality of first air inlet holes are formed in the bottom of the limiting groove, a plurality of second air inlet holes are formed in the limiting part, and the first air inlet holes correspond to the second air inlet holes in position. According to the design, the integrity of the bump foil assembly can be guaranteed, the structure is simple, machining is convenient, and mounting and dismounting are more convenient. When the speed of the rotor is low, the static pressure gas forms a gas film, and the bearing capacity of the dynamic and static pressure mixed gas radial bearing is enhanced. When the rotating speed of the rotor is high, dynamic pressure can be generated on the basis of static pressure, and the dynamic pressure and static pressure mixed gas radial bearing has larger bearing capacity due to superposition of the dynamic pressure and the static pressure.

A hydrostatic gas bearing is provided that is configured to remove humidity by heat exchanging, including a bearing seat, a rotary shaft, an annular throttling component, and a plurality of heat exchanging tubes. A cavity is provided inside the bearing seat and an inlet pipe is provided on an outer surface of the bearing seat. The annular throttling component is sleeved on the outside of the rotary shaft with a first gap provided between the annular throttling component and the rotary shaft. The first gap goes through the bearing seat to form an exhaust channel therein, and the annular throttling component is configured to throttle and cool a working medium. The plurality of heat exchanging tubes are provided in the annular throttling component, with heat exchanging medium flowing therein, which is configured to heat and vaporize a part of an in-liquid phase in a cooled portion of the working medium.

The utility model belongs to the field of bearings, and discloses a bearing with a heat dissipation structure, which comprises an outer ring, an inner ring and balls, the outer ring is rotatably connected with the inner ring, the balls are respectively rotatably connected with the outer ring and the inner ring, the outer ring is connected with a fixed ring frame, the fixed ring frame is connected with a mounting seat, the outer ring is connected with a heat conduction ring, and the heat conduction ring is connected with a heat conduction rod. The heat conduction rod is connected with heat dissipation fins, the heat dissipation fins are located on the inner side of the fixing ring frame, the installation base is connected with a suction fan, the suction fan is connected with an air inlet pipe, the air inlet pipe is connected with the fixing ring frame, the fixing ring frame is connected with an air outlet pipe, and the installation base is connected with a ventilation opening. According to the technical scheme, the bearing can be cooled, the bearing cooling effect is improved, the bearing operation efficiency is improved, the service life of the bearing is prolonged, and the equipment operation cost is reduced; and air can annularly flow through the fixed ring frame, so that all positions of the outer ring can be uniformly cooled, and the cooling efficiency and the cooling quality are improved.

The invention relates to the technical field of bearing pedestals, and discloses a sliding bearing pedestal which comprises a lower outer ring, an upper outer ring, a lower bearing bush and an upper bearing bush, a cooling pipe is arranged in a containing groove, the outer surface of a turbulent flow shaft is fixedly sleeved with a plurality of turbulent flow blades, and the end, located in a turbulent flow box, of a movable rod is fixedly connected with a rack. The outer surface of the transmission shaft is fixedly sleeved with a transmission gear, one side of the connecting plate is fixedly connected with a triangular block, and the outer surface of the upper bearing bush is fixedly connected with a shifting rod. When the upper bearing bush rotates, a shifting rod is driven to be matched with a triangular block, extrude a connecting plate and enable a rack to move, and is matched with a transmission gear, a driving bevel gear and a driven bevel gear, so that a turbulent flow shaft drives turbulent flow blades to rotate to turbulent flow cooling water in the cooling pipe, and the heat exchange speed between the cooling water in the cooling pipe is increased; the cooling water is fully subjected to heat exchange with heat generated when the bearing seat works, so that the heat exchange efficiency is greatly improved.

The invention provides a magnetic suspension rotating machine which comprises a barrel, a magnetic suspension bearing, a motor stator and a motor rotor, a barrel runner is formed in the barrel in the axial direction, and a motor rotor runner is formed in the rotor; in the axial direction, the thrust disc is arranged between the first axial stator and the second axial stator, a first thrust disc ventilation hole is formed in the thrust disc in a penetrating mode from one axial end face to the other axial end face of the thrust disc, and the first axial stator comprises a first radial outer side part and a first radial inner side part. One end, positioned on the other axial end surface of the thrust disc, of each first thrust disc vent hole is positioned between the radial inner side part II of the axial stator II and the rotor, and the other end, positioned on the axial end surface of the thrust disc, of each first thrust disc vent hole is opposite to the position of the coil slot I in the axial direction; and the first thrust disc vent hole is not opposite to the magnetic pole position of the first axial stator. According to the magnetic suspension bearing, heat dissipation and cooling of the magnetic suspension bearing are improved, meanwhile, the influence on a magnetic suspension magnetic circuit can be avoided, and enough magnetic suspension supporting force is guaranteed.

The static pressure rotary table device comprises a static pressure rotary table body and an oil supply assembly, the oil supply assembly comprises an oil pump, an oil tank, an oil inlet pipe and an oil outlet pipe, the oil pump is suitable for guiding oil in the oil tank into the static pressure rotary table body through the oil inlet pipe, and then an oil film for supporting is formed; the oil outlet pipe is suitable for discharging oil in the static pressure rotary table main body, the two oil inlet filtering parts are connected with the oil inlet pipe, the oil inlet filtering parts are suitable for filtering oil entering the static pressure rotary table main body, driving assemblies and oil inlet filtering nets are arranged in the oil inlet filtering parts, and the oil inlet filtering nets are connected with the oil outlet pipe. The driving assembly is connected with the oil inlet filter screen so as to be suitable for driving the oil inlet filter screen to rotate, then centrifugal force is generated to separate impurities attached to the oil inlet filter screen, different filter assemblies are arranged for an oil inlet part and an oil outlet part respectively, differential self-cleaning treatment is carried out according to different impurity contents, and the filter efficiency is improved.

The invention discloses a driven mechanism for a wafer cleaning device and the wafer cleaning device, and the driven mechanism comprises a base which is hollow and forms a mounting cavity; the rotating shaft is rotatably connected to the mounting cavity through a rotating transmission assembly, and the first end of the rotating shaft extends out of the base; the wafer bearing unit is concentrically and coaxially connected to the rotating shaft and is used for bearing a wafer; the structural part is in sealed connection with the base, and part of the structural part extends into the mounting cavity and can abut against the rotary transmission assembly; the sensor assembly is partially connected with the rotating shaft and used for monitoring the number of turns of rotation of the rotating shaft relative to the base; the wafer rotates to drive the wafer bearing unit to rotate, and the rotating shaft rotates synchronously to drive the sensor assembly to rotate so as to monitor the number of revolutions of the wafer. The wafer rotates to drive the wafer bearing unit to rotate, the rotating shaft rotates synchronously and is matched with the sensor assembly to monitor the rotating speed of the wafer, the mass and torque of the rotating shaft are small, the rotational inertia of the rotating shaft and the wafer bearing unit is reduced, monitoring of the rotating speed of the wafer is more accurate, and the cleaning effect is better.

The high-strength low-friction retainer formed through high-pressure casting comprises a retainer body, the retainer body comprises two arc-shaped sections and a plurality of window beams connected with the two arc-shaped sections, window holes for containing rolling bodies are formed between the adjacent window beams, and the sides, away from the window holes, of the window beams located at the two ends of the retainer body are provided with inward concave faces. And the inner concave surfaces of the two adjacent retainer main bodies are oppositely arranged to form an oil accommodating gap, so that the oil storage space in the bearing is obviously increased. According to the retainer, sufficient lubricating oil is guaranteed between the rolling body and the retainer main bodies and between the retainer main bodies, more effective heat dissipation is further facilitated, the design of the inner concave faces reduces the direct contact area between the adjacent retainer main bodies compared with a straight face, and therefore friction and abrasion between the retainer main bodies are reduced, and the service life of the retainer main bodies is prolonged. And the overall performance and stability of the bearing are improved.

The invention provides a magnetic suspension rotating machine which comprises a cylinder body, a magnetic suspension bearing, a motor stator and a rotor, the cylinder body, the rotor and the stator are respectively provided with flow channels, in the axial direction, a thrust disc is arranged between a first axial stator and a second axial stator, and thrust disc ventilation holes are formed in the thrust disc from one axial end face to the other axial end face in a penetrating mode. The first axial stator comprises a first radial outer side part and a first radial inner side part, the first radial outer side part and the first radial inner side part are arranged at intervals in the radial direction of the first axial stator, and a first coil groove is formed between the first radial outer side part and the first radial inner side part. One end, located on one axial end face of the thrust disc, of the first thrust disc air inlet hole is opposite to the position of the first coil groove in the axial direction, and one end of the first thrust disc air inlet hole is not opposite to the magnetic pole position of the first axial stator. According to the magnetic suspension bearing, heat dissipation and cooling of the magnetic suspension bearing are improved, meanwhile, the influence on a magnetic suspension magnetic circuit can be avoided, and enough magnetic suspension supporting force is guaranteed.

The invention provides a magnetic suspension rotating machine. The magnetic suspension rotating machine comprises a magnetic suspension bearing, a motor stator and a rotor, the thrust disc is arranged between the first axial stator and the second axial stator, thrust disc ventilation holes are formed in the thrust disc in a penetrating mode from one axial end face to the other axial end face of the thrust disc, the first axial stator comprises a first radial outer side portion and a first radial inner side portion, and the first radial outer side portion and the first radial inner side portion are arranged in the radial direction of the first axial stator in a spaced mode. A first coil groove is formed between the first thrust disc and the second thrust disc, a first coil is arranged in the first coil groove, one end, located on one axial end face of the thrust disc, of the first thrust disc air inlet hole is opposite to the first coil groove in the axial direction, and the motor rotor flow channel can be communicated with the first bearing stator ventilation hole and the motor stator flow channel. And one end of the air inlet hole of the first thrust disc is not opposite to the magnetic pole position of the first axial stator. According to the magnetic suspension bearing, heat dissipation and cooling of the magnetic suspension bearing are improved, meanwhile, the influence on a magnetic suspension magnetic circuit can be avoided, and enough magnetic suspension supporting force is guaranteed.

The invention relates to the technical field of automobile part processing, in particular to a composite motor end cover which comprises a cover body and a sealing plate, the cover body is provided with a front cavity, a shaft penetrating hole and a back cavity, the shaft penetrating hole is provided with an upper preset groove and a lower preset groove, an upper oil storage box is installed in the upper preset groove, and a lower oil storage box is installed in the lower preset groove. A first inflow hole and a second inflow hole are formed in the upper preset groove, a first overflow hole and an overflow hole are formed in the lower preset groove, drainage pipes are inserted into the first inflow hole, the second inflow hole, the first overflow hole and the second overflow hole, a driven ring body is installed on the inner side of the shaft penetrating hole, and a vertical moving frame is installed on the lower oil storage box. The lower end of the vertical moving frame is fixedly connected with a piston rod of which the lower end is connected with a piston disc; the circulating oil channels are formed at different angles of the cover body, so that the bearings in the bearing chambers are fully lubricated and cooled, and the heat dissipation efficiency of the motor end cover is improved; the invention also provides a processing technology of the composite motor end cover.

A gyroscopic roll stabilizer includes an enclosure, a flywheel assembly, a bearing, a motor, and a bearing cooling circuit. The enclosure is mounted to a gimbal for rotation about a gimbal axis and configured to maintain a below-ambient pressure. The flywheel assembly includes a flywheel and flywheel shaft. The bearing rotatably mounts the flywheel assembly inside the enclosure for rotation about a flywheel axis. The bearing has an inner race and an outer race. The inner race is rotationally fixed relative to the flywheel shaft, and the outer race is held rotationally fixed relative to the enclosure. The motor is operative to rotate the flywheel assembly. The bearing cooling circuit is configured to transfer heat away from the bearing by recirculating coolant along a closed fluid pathway. The gyroscopic roll stabilizer is configured to transfer heat away from the inner and / or outer race of the bearing to the coolant.

An ultrahigh-temperature-resistant full ball bearing comprises a bearing outer ring, a bearing inner ring and a roller, the roller is spherical and is arranged in a roller path in a full complement mode, and the bearing outer ring, the bearing inner ring and the roller are all made of carbon fiber reinforced ceramic matrix composite materials. The design method comprises the following steps: S1, determining the inner diameter d, the outer diameter D and the width B of the bearing; and S2, determining an inner groove curvature radius coefficient fi and an outer groove curvature radius coefficient fe of the bearing based on a principle of reducing the working contact stress of the bearing and prolonging the fatigue relieving life of the bearing. And S3, the value ranges of the roller diameter DW, the center diameter DWP and the roller number Z of the bearing are determined. And S4, optimizing and determining the roller diameter DW, the center diameter DWP and the roller number Z of the bearing by taking the principle of obtaining the maximum radial basic rated static load. By applying the high-temperature-resistant bearing, the technical problems that an existing bearing loses efficacy quickly due to high temperature and insufficient lubrication in a high-temperature environment for a long time, and a bearing made of a ceramic material is low in fracture toughness and thermal shock resistance can be solved.

The utility model provides a magnetic suspension rotating machine. The magnetic suspension rotating machine comprises a magnetic suspension bearing, a motor stator and a rotor, the thrust disc is arranged between the first axial stator and the second axial stator, thrust disc ventilation holes are formed in the thrust disc in a penetrating mode from one axial end face to the other axial end face of the thrust disc, the first axial stator comprises a first radial outer side portion and a first radial inner side portion, and the first radial outer side portion and the first radial inner side portion are arranged in the radial direction of the first axial stator in a spaced mode. A first coil groove is formed between the first thrust disc air inlet hole and the second thrust disc air inlet hole, a first coil is arranged in the first coil groove, one end, located on one axial end face of the thrust disc, of the first thrust disc air inlet hole is opposite to the first coil groove in the axial direction, and the motor rotor flow channel and the motor stator flow channel can both communicate with the first bearing stator ventilation hole; the first thrust disc air inlet hole is not opposite to the magnetic pole position of the first axial stator. According to the magnetic suspension bearing, heat dissipation and cooling of the magnetic suspension bearing are improved, meanwhile, influence on a magnetic suspension magnetic circuit can be avoided, and enough magnetic suspension supporting force is guaranteed.

The invention provides an axial magnetic suspension bearing and a magnetic suspension rotating machine, the axial magnetic suspension bearing comprises an outer cylinder, a first axial stator assembly, a second axial stator assembly and a thrust disc are assembled in the outer cylinder, the first axial stator assembly comprises a first stator iron core, the second axial stator assembly comprises a second stator iron core, the thrust disc is located between magnetic poles of the two stator iron cores, and the thrust disc is located between the first stator iron core and the second stator iron core. The magnetic poles of the first stator iron core comprise a first outer magnetic pole and a first inner magnetic pole, the magnetic poles of the second stator iron core comprise a second outer magnetic pole and a second inner magnetic pole, first overflowing ring grooves are formed in the opposite surface areas of the first outer magnetic pole and the thrust disc and the opposite surface areas of the second outer magnetic pole and the thrust disc, and the first overflowing ring grooves and the thrust disc are coaxially arranged. Overflowing through holes are formed in the first inner magnetic pole and the second inner magnetic pole and extend in the radial direction of the thrust disc, and the overflowing through holes and the first overflowing ring grooves are communicated through air gaps between the outer magnetic poles and the thrust disc, and the positions of the air gaps correspond to the positions of the overflowing through holes. The internal structure of the bearing can be effectively cooled.

A gyroscopic roll stabilizer for a boat includes an enclosure mounted to a gimbal for rotation about a gimbal axis and configured to maintain a below-ambient pressure, and a flywheel assembly including a flywheel and flywheel shaft, with the flywheel assembly rotatably mounted inside the enclosure for rotation about a flywheel axis. The gyroscopic roll stabilizer also includes a motor operative to rotate the flywheel assembly and mounted in a boss that is integrally formed in the enclosure. A motor cooling circuit is configured to transfer heat away from the motor. The motor cooling circuit has a closed fluid pathway for recirculating cooling fluid therein. The fluid pathway extends through the boss so that the cooling fluid circulates through the boss around the motor. The gyroscopic roll stabilizer is configured to transfer heat away from the motor to the cooling fluid. Related methods are also disclosed.