3160 results about "Roller bearing" patented technology

The invention belongs to the technical field of bearing fault diagnosis, and discloses a self-aligning roller bearing fault diagnosis method and system, and the method comprises the steps: obtaining operation data and sensor data, carrying out the simulation through a digital twin model, calculating the deviation between model prediction and actual measurement, and carrying out the mode recognition according to the deviation. Digital twin model parameters are dynamically calibrated in a normal mode, fault type identification and bearing positioning are carried out in combination with the calibrated model in an abnormal mode, accurate diagnosis of new installation and bearing faults in a running-in period is realized, dynamic calibration of the digital twin model parameters is realized, normal deviation and abnormal deviation are distinguished, and fault diagnosis accuracy is improved. The accuracy of fault diagnosis in the new installation and running-in period is improved, and fault type recognition and fault bearing positioning are achieved.

The invention discloses a folding wing structure of an unmanned aerial vehicle, which comprises a rotating shaft embedded in a vehicle body, wherein a lower wing elastic sheet and an upper wing elastic sheet are mounted in an inner cavity of the rotating shaft from bottom to top, a first locking block and a second locking block are respectively arranged at the free ends of the lower wing elastic sheet and the upper wing elastic sheet, the first locking block and the second locking block are respectively matched with a first notch and a second notch which are formed in the rotating shaft, the outer side of the rotating shaft is sequentially sleeved with a lower wing and an upper wing from bottom to top, the upper surface of the lower wing and the lower surface of the upper wing are each provided with a groove, the two grooves are oppositely formed to form a torsional spring groove, a torsional spring is arranged in the torsional spring groove, and the upper inner sides of the lower wingand the upper wing are provided with a first locking groove and a second locking groove correspondingly; and the outer side of the rotating shaft is further sleeved with a roller bearing, a baffle isinstalled at the top of the rotating shaft, and the roller bearing is located between the upper wing and the baffle. The processing cost of the unmanned aerial vehicle is reduced, the folding wing structure is insensitive to the structural size, and the folding wing structure can adapt to a more miniaturized barrel-shooting unmanned aerial vehicle.

The invention belongs to the technical field of clamping, and provides a self-adaptive shape follow-up centering clamp and an automatic clamping method. The self-adaptive shape follow-up centering clamp comprises an end cover, an outer circular ring, a floating shape follow-up positioning cylinder, a driving clamping cylinder, an inner circular ring, a hanging ring, a rib plate and a PLC control system. The automatic clamping method can replace a traditional process ring clamping method, self-adaptive shape follow-up positioning and clamping of the barrel workpiece are achieved, the process ring turning procedure is omitted, and material consumption is reduced. After the outer circular ring, the cylindrical roller bearing and the axis of the lathe spindle in the self-adaptive shape follow-up centering clamp are mounted consistently, it can be guaranteed that the middle barrel section coincides with the axis of the lathe spindle. Shape-following positioning of a blank barrel workpiece is achieved through the floating shape-following positioning cylinder, the barrel workpiece is clamped through the driving clamping cylinder, and it is guaranteed that stress is uniform while the axis of the barrel workpiece does not deviate. The device is achieved based on a PLC control system, the clamping force is quantitatively controlled through feedback adjustment of the oil pressure gauge and the proportional valve, and clamping deformation is reduced.

The invention discloses a fatigue life model of a single-row tapered roller bearing and an optimization method. Contact load, contact stress and fatigue life need to be calculated. Generally speaking, when the service life is reached, fatigue damage occurs at the maximum contact load position, and the failure of the part starts to fail from the maximum contact load position theoretically. The cycle time of the rolling body or the ferrule at the maximum contact load under the maximum stress is calculated according to the formula and is not influenced by the failure of a certain roller (or ferrule) and other parts of the bearing on the service life of the bearing. According to the invention, the fatigue life, the static strength and the static bearing capacity meet the requirements, and the total volume sum of the upwind bearing and the downwind bearing is minimum. On the premise that the performance requirement and the 20-year service life specified by the IEC61400-4 standard are met, the size sum of the two fan main bearings is reduced by 13.68%, the production and transportation cost is reduced, the economic benefits of enterprises are improved, and long-term stable operation of wind power equipment is guaranteed.

The invention relates to the technical field of bearings, and particularly discloses a high-precision cylindrical roller bearing for an industrial robot, the high-precision cylindrical roller bearing comprises a first shaft sleeve, a second shaft sleeve and a spacer bush, the first shaft sleeve and the second shaft sleeve are located on the inner side and the outer side of the spacer bush respectively, a roller is arranged on the surface of the spacer bush, and the outer surface of the roller is in rotating contact with the first shaft sleeve and the second shaft sleeve respectively; and a compensation assembly is arranged on the inner side of the spacer bush and comprises a guide groove formed in the inner side of the spacer bush, a movable frame is slidably connected to the inner side of the guide groove, and a movable plate is fixedly connected to the outer surface of the movable frame. By arranging the compensation assembly, when the lubricating wheel is abraded, the movable frame moves towards one side close to the roller under the elastic force action of the double metal plates, and the reciprocating lead screw drives the lubricating wheel to synchronously move, so that the lubricating wheel is always attached to the surface of the roller, and a good lubricating effect can be continuously achieved on the bearing; and the influence of abrasion of the lubricating wheel on the lubricating effect of the bearing is reduced.

A hinge assembly for a bed includes a hinge guide assembly connected to a head section of the bed, and a bed frame assembly mounted portion connected to the bed frame assembly. The hinge guide assembly forms curved guide tracks that receive roller bearings mounted to the bed frame assembly mounted portion. The connection between the hinge guide assembly and roller bearings results in angular rotation of the head section relative to the bed frame assembly.

The invention discloses a harmonic speed reduction built-in motor with a circulating lubrication function. The harmonic speed reduction built-in motor comprises a center shaft, an electronic stator assembly, a motor rotor assembly, a wave generator, a first motor shell, a first gasket, a flexible gear, a second gasket, a controller shell, a controller, an output flange plate, a crossed roller bearing, a rigid gear, a needle bearing and a second motor shell. Lubricating oil liquid is accurately conveyed to the position between the flexible gear and the rigid gear in an outer circulation mode, precise lubrication is achieved, the oil liquid can be cooled, the lubricating effect is good, and the service life of the middle motor is prolonged.

A wing for an aircraft, comprising a main wing and a high lift assembly which includes a body, and an assembly connecting the body to the main wing, so the body is movable between a retracted position and an extended position. The assembly comprises a track extending along a longitudinal axis between first and second ends, with an intermediate portion therebetween. A roller bearing ensures that the track moves along the longitudinal axis. The roller bearing comprises bearing units, each mounted to the main wing and having a bearing surface for engaging the elongate track. The units include a first and second end units and an intermediate unit wherein, relative to the longitudinal axis, the intermediate unit is positioned between the first end unit and the second end unit. The elongate track comprises a recessed portion which, in the retracted position, aligns the intermediate unit.

The helicopter rotor head structure comprises a propeller hub, a propeller clamp, a bearing and a variable pitch mechanism, the propeller hub is arranged at the top of a rotor main shaft, a connecting shaft is arranged in the propeller hub, the end of the connecting shaft extends out of the propeller hub, the end of the connecting shaft is sleeved with the bearing, and the end, away from blades, of the propeller clamp is sleeved with the bearing and rotationally connected with the connecting shaft; the bearings comprise an angular contact bearing, a thrust roller bearing and a deep groove ball bearing, and the angular contact bearing, the thrust roller bearing and the deep groove ball bearing are sequentially arranged in the length direction of the connecting shaft; and the variable-pitch mechanism is arranged on the rotor wing main shaft in a sleeving manner and is connected with the propeller clamp. The bearing has the technical effects that the angular contact bearing, the thrust roller bearing and the deep groove ball bearing are combined for use, so that the axial and radial bearing capacities of the whole bearing are obviously improved, the bearing is not easy to damage, and the whole service life is longer; and by arranging the variable pitch mechanism, the angle of the paddle can be flexibly adjusted, so that the lift force and the resistance generated by the rotor wing are adjusted.

The invention discloses a mechanical arm and a humanoid robot, and relates to the technical field of robots. The mechanical arm comprises a plurality of structural parts which are sequentially connected, the adjacent structural parts rotate relatively through driving parts, and the rotating axes of the adjacent driving parts are perpendicular to each other. The driving part comprises a horizontal driving part and a vertical driving part, the rotating axis of the horizontal driving part is perpendicular to the extending direction of the mechanical arm, and the rotating axis of the vertical driving part is parallel to the extending direction of the mechanical arm. An output shaft of the horizontal driving part drives the adjacent structural parts to rotate through the single cantilever, and a first wire harness fixing structure is arranged at the tail end of the horizontal driving part. An output shaft of the vertical driving piece is connected with a first crossed roller bearing through a connecting inner shaft sleeve, and the first crossed roller bearing is installed on an outer ring of the connecting inner shaft sleeve. After being led out from the first wire harness fixing structure, the wire harness extends along the side wall of the vertical driving piece, penetrates through the inner ring connected with the inner shaft sleeve and then extends to the first wire harness fixing structure of the next horizontal driving piece.

The utility model discloses a crossed roller bearing assembling device for a robot, and relates to the technical field of bearing assembling. The device comprises a bottom plate, wherein the top of the bottom plate is fixedly connected with a workbench; a clamping assembly is arranged at the bottom of the workbench and comprises a motor, the motor is fixedly connected to the right side of the top of the bottom plate, the output end of the motor is fixedly connected with a rotating rod, the top of the rotating rod is fixedly connected with a transmission gear, and one side of the transmission gear is meshed with a driven gear. According to the bearing outer ring clamping and positioning device, the rotating rod can be driven to rotate through work of the motor, then the driven gear is driven to rotate through the transmission gear, the fixed plate and the clamping plate are driven to move through the sliding rod, the purpose of clamping and positioning a bearing outer ring is achieved, and meanwhile when the movable plate moves, the push rod is driven to move through the inclined block; and therefore, the purpose of clamping the outer ring and the inner ring of the bearing at the same time is achieved.

A rotary joint module comprises a rotary joint module output end, a rotary joint module motor end and a rotary joint module position detection end. The rotary joint module of the present invention has strong external force perception capability, high control feedback accuracy, high electromagnetic shielding and compact structure. It is a high-performance force-controlled mechanical arm rotary joint; the encoder position, torque sensor position and communication line position of the rotary joint are all electromagnetically shielded and protected, which can be better adapted to harsh electromagnetic environments. The rotary joint module is designed with a torque sensor for precise force feedback. The rotary joint module is designed with a harmonic reducer, which is mainly composed of a flexible wheel, a steel wheel, a wave generator and a cross roller bearing. The harmonic reducer is mainly used to increase the output torque of the module.

The invention relates to the technical field of belt conveyors, and discloses an intelligent tensioning control method and system for a belt conveyor. According to the method and system, a dynamic mathematical model is constructed by collecting the current, rotating speed and torque parameters of a driving motor and combining hydraulic cylinder pressure and turnabout drum bearing force data, and high-precision indirect estimation of belt tension is achieved; a progressive adjustment strategy is adopted, the displacement of the hydraulic cylinder is dynamically adjusted according to tension deviation, mechanical abrasion is reduced, and system reliability and severe environment adaptability are improved. The method has the beneficial effects that the tension control error is reduced, the hydraulic action frequency and the maintenance cost are reduced, and meanwhile, the operation efficiency and safety of the conveyor are improved.

The invention provides an axially compact joint module and a joint structure. The axially compact joint module comprises a harmonic assembly, wherein the harmonic assembly comprises a crossed roller bearing outer ring which is fixedly connected with a steel wheel, a crossed roller bearing inner ring which is fixedly connected with a hollow shaft, a flexible gear is meshed with the steel wheel, and the flexible gear is connected with a wave generator through a bearing; the motor assembly comprises a motor stator and a motor rotor which are coupled, a motor shaft is fixedly connected with the motor rotor, the meshing part of the flexible gear and the steel wheel extends into the motor shaft, and a small bearing is arranged between the inner circle of the motor shaft and the hollow shaft; the brake assembly comprises a brake rotating shaft and a brake cover plate, the brake rotating shaft is fixedly connected with the motor shaft, the brake cover plate is fixedly connected with the shell, and the outer circle of the motor shaft is connected with the shell through a large bearing and the brake cover plate in a matched mode. The meshing part of the flexible wheel and the steel wheel extends into the motor shaft and is overlapped in the axial size, the total length of the joint can be reduced by axially overlapping the small bearing and the large bearing, and the axial compactness of the joint module is improved.

The invention discloses a fan-shaped air cylinder, and relates to the technical field of air cylinders, the fan-shaped air cylinder comprises two fan-shaped air cylinder shells, an integrated blade is arranged between the two fan-shaped air cylinder shells, and rotating shafts are arranged at the two ends of the integrated blade. The fan-shaped air cylinder adopts a two-way lip-shaped sealing structure and is provided with a spring steel sheet and a pressing plate, the structure is firm and durable, compressed air enters an air groove to enable the lip-shaped seals to expand all around to achieve zero leakage, a lubricating oil groove is formed between the lip-shaped seals on the two sides, lubricating oil rotates along with a piston, the lubricating effect is good, friction force is reduced, and the service life is prolonged. The service life of the sealing ring is prolonged, the torque is large, the rotating shaft does not need to use the sealing ring, leakage is avoided, the conical roller bearing is arranged on the fan-shaped air cylinder shell, the conical roller bearing can bear axial force and radial force at the same time, the blade rotating shaft can be effectively positioned, and the service life of the blade rotating shaft is prolonged. And abrasion of the lower edge sealing ring and scratching of the cylinder wall caused by sinking generated by the dead weight of the blades are prevented.

The invention relates to the technical field of railway freight train technical inspection, in particular to a rail system for movement of a wagon bottom inspection robot, which comprises a robot and a robot rail, a groove is formed in the surface of the robot rail, a rail clamping device is arranged at the bottom of the robot, and a polyurethane outer ring bearing is mounted on one side of the rail clamping device. The polyurethane outer ring bearing is located in the groove, and the rail clamping device is connected to the surface of a robot rail in a clamped mode. When a robot inspects the bottom of a preset truck on the robot track, the polyurethane outer ring bearing is always located in a groove in the surface of the robot track, and the robot is prevented from derailing; the non-metal outer ring bearings of the rail clamping devices make contact with the side faces of the robot rails when the robot moves, so that the non-metal outer ring bearings of the rail clamping devices are located in the grooves in the side faces of the two robot rails all the time, the robot cannot be separated from the robot rails, the robot is prevented from being damaged due to derailing, and the working efficiency of the robot is improved.

The invention discloses a method for machining outer rings of medium-large thin-wall tapered roller bearings, and relates to the field of methods for machining outer rings of medium-large thin-wall tapered roller bearings. The invention aims to solve the technical problems of poor processing quality and high rejection rate of the current processing method of the medium-large thin-wall tapered roller bearing. The method comprises the following steps: 1, turning one side end surface and outer and inner diameter surfaces of a workpiece; secondly, turning the end face and the outer diameter face of the other side of the workpiece; 3, processing a raceway and an inner side chamfer; heat treatment; fifthly, end face allowance is removed, and end face taper deformation generated by heat treatment is modified; 6, finishing deformation of the outer diameter surface of the workpiece treated in the step 5; seventhly, a roller path is subjected to hard turning; 8, stabilizing treatment; and 9, performing fine grinding, final grinding and fine grinding treatment. According to the method, the size and precision of the outer ring of the medium-large thin-wall tapered roller bearing are effectively guaranteed, and the rejection rate is reduced. The method is used for machining the outer rings of the medium-large thin-wall tapered roller bearings.

The invention discloses a wind power shafting supporting structure and a clearance match grinding method thereof, and relates to the technical field of wind turbine generator design, the supporting structure comprises a first bearing, a second bearing and a third bearing, the first bearing, the second bearing and the third bearing are all tapered roller bearings, outer rings of the first bearing, the second bearing and the third bearing are arranged in a bearing seat, and inner rings of the first bearing, the second bearing and the third bearing are arranged on a main shaft. A front inner spacer ring is arranged between inner rings of the first bearing and the second bearing, and a front outer spacer ring is arranged between outer rings of the first bearing and the second bearing. A rear inner spacer ring is arranged between the inner rings of the second bearing and the third bearing; a rear outer spacer ring is arranged between the outer rings of the first bearing and the second bearing. The clearance match grinding method comprises the following steps: 1, measuring the inner ring height, the outer ring height and the assembly height of each bearing; 2, measuring the height of the front outer spacer ring and the height of the rear outer spacer ring; and 3, calculating the height of the front inner spacer ring and the height of the rear inner spacer ring. The wind power main shaft structure can solve the technical problem that the main shaft bearing is prone to early failure due to the fact that the bearing is installed obliquely or clearance press-fit is not in place in an existing wind power main shaft structure.

The utility model provides a double-rigid-gear harmonic speed reducer with a torque sensing function, which relates to the technical field of speed reducers and comprises a wave generator, a flexible bearing, a flexible gear, an output end rigid gear, a crossed roller bearing and a fixed end rigid gear. The crossed roller is arranged between the bearing outer ring and the output end rigid wheel, the output end rigid wheel serves as an inner ring of the crossed roller bearing, and the fixed end rigid wheel is detachably and fixedly connected with the bearing outer ring; the two end faces of the fixed end rigid wheel are each provided with a receding groove coaxial with the fixed end rigid wheel, a connecting wall is formed between the bottoms of the two receding grooves, and a plurality of strain gauges arranged in a circumferential array mode are installed at the position, close to one side of the output end rigid wheel, of the bottom of the receding groove. The elastic strain gauge is embedded in the rigid fixed end rigid wheel, so that the fixed end rigid wheel has a torque sensing function, the axial thickness of the harmonic speed reducer is not increased, and the use requirements of more occasions are met.

A crossed roller bearing and an isolation block belong to the technical field of bearings, and are characterized in that oil storage holes are respectively formed in the centers of contact surfaces of two rollers; the four vertical surfaces are respectively provided with a guide oil groove, and the guide oil grooves extend and penetrate through the whole thickness of the corresponding vertical surfaces; and an included angle is formed between the extending direction of the guide oil groove and the central axis of the isolation block, so that a pumping effect is generated when the roller rotates, and lubricating grease is promoted to flow in the guide oil groove. The internal grease storage space of the bearing is optimized, and the internal lubrication state is greatly improved.

The invention relates to the technical field of aero-engine rotor vibration tests, in particular to an aero-engine rotor unsteady-state thermally induced vibration test system which comprises a rotor experiment table, an air inlet and exhaust system, a lubricating oil system, a protection system and a heating system. The rotor experiment table comprises a first supporting system, a second supporting system, a rotor outer protection casing, a gas compressor disc, a gas compressor sealing disc, a turbine disc, a turbine front sealing disc, a front shaft diameter, an inter-disc drum, a rear shaft diameter, a first squirrel-cage elastic support, a ball bearing, a second squirrel-cage elastic support and a rolling rod bearing. The first supporting system is composed of a first squirrel-cage type elastic support and a ball bearing, meanwhile, an air inlet is formed in the first supporting system, and the ball bearing in the first supporting system is connected with the front shaft diameter in an interference fit mode. Rotor unsteady-state characteristics considering heating conditions are finally created, and vibration response and durability of a wheel disc structure under the unsteady-state thermal load condition are studied in combination with test conditions such as temperature vibration and the like.

The invention relates to the technical field of shaping of wind power main shaft type bearing rings, in particular to a cylindrical roller bearing ring shaping process, which comprises the following steps: respectively measuring the diameter variation of the outer diameter of the bearing ring close to two end surfaces, and if the diameter variation of only one side is greater than or equal to a standard deformation threshold value, determining that the cylindrical roller bearing ring is shaped. The top taking type tool is installed at the position, with the minimum diameter, of the end of the bearing ring so that the short shaft can be reversely deformed into the long shaft, if the diameter variation of the two sides is larger than or equal to the standard deformation threshold value, the top taking type tool is installed at the position, with the minimum diameter, of the middle of the bearing ring so that the short shaft can be reversely deformed into the long shaft, and shaping and tempering are conducted; respectively measuring the diameter variation for the second time; and if the diameter variation of the two sides is smaller than the standard deformation threshold value, it is judged that the tempering is qualified, and the tempering is completed. The shaping process comprises two times of tempering, the internal structure of the part of the bearing ring can be effectively stabilized, the internal stress is reduced, and the bearing part with the stable size is obtained.

The frame structure of the humanoid robot comprises a hip assembly, a thigh assembly and a shank assembly, the hip assembly comprises a hip joint Pitch assembly, a hip joint Roll assembly, a hip joint Yaw assembly, a trunk supporting frame and a U-shaped support, and the hip joint Pitch assembly enables a pitch motor to incline by 20 degrees through the trunk supporting frame and then is connected with the U-shaped support; the U-shaped support is rigidly and fixedly connected with the hip joint Yaw assembly through the hip joint Roll assembly, and the thigh assembly is connected with the shank assembly. A crossed roller bearing double-sided fixing structure is arranged at the connecting part of the hip joint Roll assembly and the hip joint Pitch assembly; the hip joint pitch motor and the hip joint roll motor are designed in a coupling mode, the crossed roller bearing is additionally arranged on the output shaft of the hip joint motor, meanwhile, the structural mode that the inner ring and the outer ring are fixed on the four sides is adopted, and the hip joint pitch motor is resistant to impact and overturning moment, easy to install and stable in reliability.

The invention provides a lightweight harmonic speed reducer, and relates to the technical field of speed reducers. A flexible gear is respectively connected with a wave generator and an inner structural body of a crossed roller bearing through an elastic meshing interface; an inner gear matched with the flexible gear in tooth shape is arranged on the inner side of the inner structure body. The invention has the beneficial effects that the internal gear and the crossed roller bearing are integrally designed, so that the number of assembly components is reduced, the volume of parts is reduced, the axial size is reduced, the structural rigidity is improved, the stress distribution of a transmission interface is more uniform, the service life is effectively prolonged, and the assembly difficulty is reduced; the crossed roller bearing is made of a polymer composite material, and the weight of the crossed roller bearing is reduced by 30-50% compared with that of a traditional metal material, so that the weight of the harmonic speed reducer can be greatly reduced, the burden of a driving motor is reduced, the service life of the driving motor is prolonged, the elasticity is increased due to the design of the axial hollow roller, and the precision error and the assembly error of parts can be absorbed; and a gap between the roller and the track is eliminated through elastic deformation, so that transmission without a back gap is achieved.

An aircraft wing includes a main wing and a high lift assembly having a high lift body, and a connection assembly movably connecting the high lift body to the main wing to be movable between a retracted and an extended position, and having an elongate track extending along a longitudinal axis between a first end and a second end. The first end of the track is mounted to the high lift body. The track is mounted to the main wing via a roller bearing to be movable along the longitudinal axis. The roller bearing includes a first and a second roller mounted to at least one of the main wing and the track via first and second eccentric connector assembly, respectively. The first and second eccentric connector assemblies are configured to be engaged simultaneously by a single alignment member for synchronous rigging of the first and second rollers.

The invention belongs to the technical field of continuous casting roller bearing seat repairing, and particularly relates to a novel auxiliary device for repairing a continuous casting roller bearing seat and a repairing method. The device comprises a rotating support which is placed on a workbench and used for supporting and positioning the repairing device; the vibration module is vertically and rotationally mounted at the top end of the rotating support and used for vibrating the supporting plate and the clamping assembly mounted at the top end of the supporting plate so as to eliminate stress; the supporting plate is fixed above the vibration module; the clamping assembly is installed on the supporting plate, the clamping assembly comprises a handle and two limiting plates, and the distance between the two limiting plates is reduced by rotating the clamping assembly, so that the two limiting plates clamp the continuous casting roller bearing seat. According to the invention, the repairing quality and the working efficiency can be improved, and the safety and the convenience of operation are enhanced.

In a left-right wheel drive device (10) that accommodates, in a casing (4), two electric motors (1, 2) spaced apart from each other and a planetary gear mechanism (3) arranged so as to be offset on a first side in an axial direction, a pair of motor shafts (11), a pair of counter shafts (12), and two output shafts (13, 14) are arranged in parallel. The first output shaft (13) is arranged on the first side from the planetary gear mechanism (3) and is fixed with a carrier (3C) at an end portion of a second side thereof. The second output shaft (14) is longer than the first output shaft (13) and is fixed with the second sun gear (3S2) at an end portion on the first side thereof. The second output shaft (14) is rotatably supported by roller bearings (35, 36) at the end portion on the second side and a position on the second side from a driven gear meshing with the second counter gear.

The utility model relates to the technical field of double-row tapered roller bearings, in particular to a device for improving the installation clearance adjustment efficiency of a double-row tapered roller bearing, which comprises a bearing body and a detection assembly, the bearing body comprises an inner ring, a tapered roller, an outer ring and a bearing seat which are sequentially arranged from inside to outside; the inner ring is sleeved and detachably connected to the shaft rod, the outer ring is divided into an upper section and a lower section, a space ring is arranged between the upper section and the lower section, the outer ring is sleeved with the bearing seat, the top end of the inner side face of the bearing seat is fixedly connected with an upper limiting ring, and the upper limiting ring is located over the outer ring and used for limiting the top end of the outer ring; the bottom end of the bearing seat is detachably connected with a lower limiting ring; the lower limiting ring is used for limiting the bottom end of the outer ring; the detection assembly comprises a hanging ring and a dial indicator, the hanging ring is detachably arranged at the top end of the bearing seat, and the dial indicator is detachably arranged at the top end of the bearing body and used for detecting installation clearance. The device has the effects that the mounting clearance is convenient to adjust, and the efficiency is improved.

The invention discloses a roll bearing seat flexible connecting device, a quick-response high-precision pre-stress rolling mill and a control method. Comprising a frame type rack, and a roller bearing seat is arranged in the rack; a double-piston-rod hydraulic cylinder is arranged on an upper beam and / or a lower beam of the frame type rack; a connecting rod penetrates through a piston rod of the hydraulic cylinder; a concave-convex combined spherical pad sleeves one end, close to the bearing seat, of the connecting rod; the concave spherical pad is positioned on one side far away from the bearing seat, and the convex spherical pad is positioned on one side close to the bearing seat; the lower end of the connecting rod penetrates through the concave-convex combined spherical pad and the base to be connected to the roller bearing seat. The convex spherical pad can twist along with the bearing seat; the end, far away from the bearing seat, of the connecting rod extends upwards out of the rack and is in threaded connection with a nut, and the connecting rod between the nut and the rack is sleeved with a spring. According to the device, the combined spherical pad is arranged between the hydraulic cylinder and the bearing seat, so that the hydraulic cylinder and the bearing seat are flexibly connected, and the effect of protecting the hydraulic cylinder is achieved.

The invention relates to a wind power blade die closing seam root automatic polisher which comprises a rack and a polishing system, the rack comprises a cross beam, a cross beam supporting leg and a supporting leg support from top to bottom, the cross beam supporting leg and the supporting leg support are connected through a quick connection clamp, the polishing system comprises an X-axis unit, a Z-axis unit, a Y-axis unit and an electric cabinet, the X-axis unit is arranged to be transversely and slidably installed on the cross beam, and the Z-axis unit is arranged to be transversely and slidably installed on the Z-axis unit; the Z-axis unit is arranged on the X-axis unit in a manner of being capable of vertically sliding; the Y-axis unit comprises a Y-axis rack, a grinding motor, a grinding roller housing, a grinding roller and a belt; the Y-axis rack is arranged on the Z-axis unit in a longitudinal sliding manner; the grinding motor is arranged on the Y-axis rack through a motor mounting seat; the grinding roller housing is arranged below the grinding motor and is arranged on the motor mounting seat; the grinding efficiency is improved, the grinding consistency is high, the cost is optimized, and the safety is improved.