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75results about How to "Improve radial load capacity" patented technology
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Cylinder liner and preparation method thereof
ActiveUS20150122118A1Improve radial load capacityIncrease bite forceMolten spray coatingCylinder headsCylinder blockMechanical engineering
A cylinder liner with a plurality of protrusions on its outside surface and the manufacturing method thereof are disclosed. The protrusions are Ω-shaped, P-shaped or taper-shaped, and the Ω-shaped, P-shaped and taper-shaped protrusions are accounted for 50-99.5%, 0.5-30% and 0-20% of the total number of protrusions, respectively. The density of the protrusions on the outside surface of the cylinder liner is 15-65 per square centimeter. The outer surface of the protrusions of the cylinder liner is curved, and has a large contact area and a concave which can be filled by an aluminum sheath to improve the radial bearing capacity, so as to effectively improve the bite force between the cylinder liner and the outside aluminum sheath and prevent the cylinder liner from breaking away from the cylinder body.
Owner:GUANGDONG ZHAOQING POWER ACCESSORIES
Winding-pressing forming process and device of fiber-reinforced composite material
The invention discloses a winding-pressing forming process and device of a fiber-reinforced composite material. The process comprises the steps: placing filaments, spreading yarns, preheating, dipping, drawing and winding. The forming process comprises the specific steps: fixedly placing a fiber-yarn shaft on a yarn frame, carrying out yarn spreading by a yarn spreading frame, leading the spread fiber yarn to enter a gum-dipping device after preheating, forming a prepreg wire by an outlet of a mold head of the gum-dipping device, then forming a sizing prepreg with smooth surface by a sizing device, drawing the sizing prepreg by a drawing and winding device, winding and sizing by a mold to obtain a pre-formed body, heating the pre-formed body to a needed temperature, pushing into a moldingcavity by a guide rail or a mechanical arm, pressurizing, curing and molding. The winding-pressing forming process and device disclosed by the invention have the beneficial effects that the characteristics of high specific strength and high specific rigidity of the composite material are furthest exerted by a mold-forming process, and the problems of poor mechanical property, weak interlayer connecting property, long manufacturing period and complex manufacture and the like caused by fiber cutting of the traditional fiber-reinforced composite material are solved, so that the application prospect is wide.
Owner:泰安市中研复合材料科技有限公司 +1
Hybrid bearing and main shaft provided with hybrid bearing
ActiveCN105673689ARelieve pressureIncrease speedLiquid cushion bearingsHigh-pressure areaDrive motor
The invention discloses a hybrid bearing. The hybrid bearing comprises a bearing body (1). At least two oil grooves (2) are formed in the annular inner wall of the bearing body (1) in the radial direction of the bearing body (1) in an inwards concave mode. The hybrid bearing is characterized in that the bearing body (1) is provided with circulation channels (3), and the two ends of each circulation channel (3) communicate with two ends corresponding to the oil grooves (2) in the circumferential direction of the bearing body (1) correspondingly. According to the hybrid bearing provided by the invention, the pressure difference of an oil liquid high-pressure area and an oil liquid low-pressure area in an oil cavity can be balanced, accordingly, the purpose of reducing the radial acting force on a rotating shaft is achieved by reducing the pressure of oil liquid in the oil liquid high-pressure area, finally, the rotation speed of the rotating shaft is high, and the load of a driving motor is small.
Owner:钟勇军
Low voltage high-power threephase asynchronous motor
InactiveCN101764486AAvoid damageImprove reliabilityAsynchronous induction motorsCooling/ventillation arrangementGlass fiberPunching
The invention relates to a low voltage high-power three-phase asynchronous motor. According to the technical scheme of the invention, a front end cover and a back end cover are installed at both ends of a motor base, a stator is installed in the motor base, and is fixed on the front end cover and the back end cover, the stator is connected with a junction box, a rotor is installed in the motor base, the front end and the back end of the rotor are installed on the front end cover and the back end cover by a front bearing and a back bearing, the front bearing and the back bearing are fixed by an external bearing cover, an internal bearing cover and a bearing retainer ring, an external fan is installed at the tail end of the rotor and is fixed by the bearing retainer ring, an external fan shield is fixed on the back end cover, and a key is installed in a key slot at the front of the rotor. The invention has the characteristics that the stator punching is made of silicon steel, a stator winding is made by adopting modified high strength polyester paint to coat circular copper wires in double-layer lap wound embedding mode, and the end part of the stator winding is coated by epoxy glass fiber tapes. The invention has reasonable stator winding, good safety, skillful complete motor structure, good heat dispersion, low running noise, high intensity and safe and smooth operation.
Owner:SEC ELECTRIC MACHINERY
Plastic covered belt reinforced hollow-wall wound pipe and manufacturing method thereof
ActiveCN105318116ARice weightIncreased ring stiffnessFlexible pipesTubular articlesPipeMechanical engineering
The invention discloses a plastic covered belt reinforced hollow-wall wound pipe and a manufacturing method thereof. The plastic covered belt reinforced hollow-wall wound pipe comprises a square pipe, molten glue and a plastic covered belt. The plastic covered belt is longitudinal placed on one side face or two sides of the square pipe to form the plastic covered belt reinforced square pipe. The plastic covered belt reinforced square pipe is arranged on a roller mold to be spirally wound, the molten glue in a molten state is extruded to bond gaps, and therefore the plastic covered belt reinforced hollow-wall wound pipe is formed. The manufacturing method of the plastic covered belt reinforced hollow-wall wound pipe mainly comprises the steps of extruding shaping of the square pipe, attaching of the plastic covered reinforcement belt and winding forming. The plastic covered belt reinforced hollow-wall wound pipe is simple in structure, low in weight per meter and simple in production process, and has the characteristics of saving energy and being environmentally friendly.
Owner:GUANGDONG YONGGAO PLASTIC INDUSTRY DEVELOPMENT CO LTD
Shaft valve flow distribution cycloid hydraulic motor
ActiveCN103629042AImprove carrying capacityImproved radial load capacityRotary piston enginesHydraulic motorNeedle roller bearing
The invention relates to a shaft valve flow distribution cycloid hydraulic motor and belongs to the technical field of hydraulic transmission detection. The motor comprises a front cover and a body shell which are connected with each other, and a cycloid pin wheel pair composed of a stator and a rotor, wherein one end of the cycloid pin wheel pair is fixedly connected with the body shell by a separation disc and the other end of the cycloid pin wheel pair is fixedly connected with a rear cover; the body shell is internally provided with an output shaft extended by the outer end; the output shaft is in transmission connection with the rotor by a linking shaft. The improvement is as follows: an inner hole of the body shell is a through hole with the same inner diameter; a front needle bearing and a rear needle bearing which have the same outer diameter are arranged on the front part and the rear end of the output shaft respectively; the length of the front needle bearing is longer than that of the rear needle bearing; a shaft shoulder, which corresponds to the front end of the front needle bearing, of the output shaft is abutted against a rear retainer ring of a plane thrust bearing. According to the shaft valve flow distribution cycloid hydraulic motor, under the precondition of keeping a compact structure, the radial bearing capability of the hydraulic motor is improved, the axial bearing capability is also enhanced and the machining and assembling manufacturability is good.
Owner:ZHENJIANG DALI HYDRAULIC MOTOR
Production method of corrugated pipe joint
ActiveCN102350510AImprove connection strengthImprove radial load capacityPositioning apparatusMetal-working holdersThreaded pipeEngineering
The invention discloses a production method of a corrugated pipe joint, which comprises the following steps of: (1) mounting a special fixture on a chuck of a lathe; (2) mounting a corrugated pipe joint blank on the special fixture; (3) starting the lathe, and turning the outside diameter of one end of the corrugated pipe joint blank; (4) stopping the lathe, turning around and mounting the corrugated pipe joint blank processed in the step (3) on the special fixture; (5) starting the lathe, and turning a helical step on the outside diameter on the other end of the corrugated pipe joint blank; and (6) stopping the lathe and detaching the threaded pipe joined processed in the step (5) to finish the one-time production of the corrugated pipe joint. The production method is suitable to be usedfor producing corrugated pipe joint blanks with different pipe diameters, and the corrugated pipe joint blank is stably mounted in the production process, so that the production safety is good.
Owner:GUANGDONG YONGGAO PLASTIC INDUSTRY DEVELOPMENT CO LTD
Electric spindle supported by multivariant bearing
InactiveCN102570692AEasy to use and maintainImprove radial load capacitySliding contact bearingsSupports/enclosures/casingsBall bearingRolling-element bearing
The invention discloses an electric spindle supported by a multivariant bearing. The electric spindle comprises a shell, a rotary axle, a stator and a rotator, wherein the rotary axle is arranged in the shell, and the stator and the rotator are internally provided with a motor. The front end of the rotary axle is arranged at the external part of the shell and is adjacent to the front cover of the shell. An oil inlet for supplying pressure oil to the rotary axle is arranged in the front cover of the shell. A rear-supporting bearing is connected at the tail end of the rotary axle in the shell. The electric spindle supported by the multivariant bearing has the beneficial effects that two angular contact ball bearings of the rear bearing are used as the rear end radical supporting of the rotary axle and the axial supporting of the rotary axle to play the functions of being convenience in maintaining and repairing and being capable of bearing dual-directional axial load of the rolling bearing. By supplying pressure oil through the oil inlet, an oil membrane dynamic and static pressure bearing is formed between the front cover and the rotary axle. As the dynamic and static pressure oil membrane bearing has a larger axial bearing capacity and a longer server life than the rolling bearing, the bearing capacity of the output end of the electric spindle can be improved, and a longer service life of the electric spindle can be maintained under a larger external load.
Owner:江苏华雕机械有限公司
Air flotation main shaft and machine tool
ActiveCN111842942AIncrease speedImprove radial load capacityLarge fixed membersClassical mechanicsThrust bearing
The invention discloses an air flotation main shaft and a machine tool. The air flotation main shaft comprises a body, a central spindle, an aerostatic bearing and an aerodynamic bearing, wherein thebody is provided with a shaft hole and an airflow channel; the central spindle is arranged in the shaft hole in a penetrating mode and is provided with a thrust flying disk; the aerostatic bearing comprises a first aerostatic bearing, a second aerostatic bearing and a thrust bearing, the first aerostatic bearing and the second aerostatic bearing are both arranged in the shaft hole and both matchedwith an outer circle bearing surface of the central spindle, the thrust bearing is matched with the thrust flying disk, and the first aerostatic bearing, the second aerostatic bearing and the thrustbearing are respectively provided with air inlet holes which communicate with the airflow channel; and the aerodynamic bearing is arranged in the shaft hole, located between the first aerodynamic bearing and the second aerodynamic bearing and matched with the outer circle bearing surface of the central spindle. By using the aerodynamic bearing and the aerostatic bearing simultaneously, it can be guaranteed that the radial carrying capacity of the main shaft is enhanced while the main shaft maintains high speed, so that product performance is improved, and machining difficulty is lowered.
Owner:GUANGZHOU HAOZHI ELECTROMECHANICAL
Roller bearing constituted only by holding bracket and roller
InactiveCN101054996AImprove radial load capacitySimple structureRoller bearingsBearing componentsEngineeringMechanical engineering
The present invention discloses a roller bearing composed of a hold frame and rollers. The roller bearing includes a first annular end frame and a second annular end frame separated along the axes in axial direction and several transverse septas (7) uniformly distributed with equal space along the circumferences of the two end annular frames for connecting the two annular end frames. The outer surface of the transverse septa (7) is even with the outer diameter surfaces of the two annular end frames, the axes of the transverse septa (7) is vertical to the inner surface of the two annular end frames (3, 4), a roller (8) is disposed between each two transverse septas (7), the diameter size of the roller (8) is larger than the radial width size of the two annular end frames, the axial length of the roller (8) is smaller than the distance between the inner surfaces of the two annular end frames. The roller bearing has strong radial bearing ability, its structure is more simple and saves more material, the roller can be prevented from extrusion and abrasion, the machining technics is simple, the material and machining precision requirement is low; it saves manpower and time, and has low manufacturing cost.
Owner:NINGBO ZHONGHE AUTO PATS
Radial rolling bearing, in particular single-row spherical-roller bearing
InactiveCN101346551AEasy to assembleLower the altitudeRoller bearingsShaftsRolling-element bearingEngineering
Owner:SCHAEFFLER KG
Axial permanent-magnet bias hybrid magnetic bearing switch reluctance motor
ActiveCN104104197AIncrease slot fill rateFlexible controlDynamo-electric machinesMagnetic bearingPower switching
The invention provides an axial permanent-magnet bias hybrid magnetic bearing switch reluctance motor which comprises a torque stator, a torque rotor, a suspension force stator, a magnetic disc, a suspension force rotor, a permanent magnet, a non-magnetic stator, a non-magnetic rotor and windings, wherein the torque stator, the suspension force stator and the non-magnetic stator are axially superposed to form a whole; the non-magnetic stator is arranged between the torque stator and the suspension force stator; one winding is wound on each tooth combined by the three stators; the permanent magnet is placed between the suspension force stator and the magnetic disc, and axially magnetizes; the torque rotor, the suspension force rotor and the non-magnetic rotor are axially superposed together; the magnetic disc is in a disc structure or a salient pole structure same as the suspension force stator; the suspension force rotor is in a cylindrical structure; the number of teeth of the torque stator, the suspension force stator and the non-magnetic stator is twelve; pole arcs are equal; the number of teeth of the torque rotor and the non-magnetic rotor is eight; and pole arcs are equal. According to the motor, only the permanent magnet provides bias magnetic flux, and the motor is great in radial bearing capacity, few in power switching tube and low in control circuit cost.
Owner:NANJING UNIV OF POSTS & TELECOMM
Cycloid hydraulic motor output shaft and machining method thereof
ActiveCN103671465AConducive to infiltrationPromote formationShaftsGrinding machinesHydraulic motorManufacturing cost reduction
The invention relates to a cycloid hydraulic motor output shaft and a machining method thereof, which belongs to the technical field of mechanical transmission. The main body of the output shaft comprises an large-diameter section located in a cycloid hydraulic motor casing and a small-diameter section extending out of the casing after being assembled; a structure which is in transmission with and meshed with a hydraulic motor linkage shaft is arranged in an inner hole of the large-diameter section; a movable matching part for the inner hole of the casing is arranged on the surface of the external circumference of the large-diameter section; the movable matching part is provided with two or more sections of circumferential discontinuous oil grooves; the groove bottom of each discontinuous oil groove comprises eccentric arc sections of which centers of circle deviate a process eccentricity,and the center of the excircle of the movable matching part deviates a process eccentricity; the radius of each eccentric arc section is greater than that of the excircle of the movable matching part. By adopting the machining method, not only are improvement on working efficiency and reduction of manufacturing cost remarkably facilitated, but also an oil film is better formed, radial force bearing capacity is enhanced, and lubrication and sealing are ensured.
Owner:ZHENJIANG DALI HYDRAULIC MOTOR
Self-aligning roller bearing split-type retainer and design method thereof
InactiveCN102506075AImprove running stabilityImprove axial load capacityRolling contact bearingsBearing componentsCarrying capacityLeft half
The invention discloses a self-aligning roller bearing split-type retainer and a design method thereof. The outer diameter of the retainer is increased based on a current double-claw integral solid retainer, so that the outer diameter dimension Dc of the retainer is bigger than the inner diameter dimension of an outer ring; the middle part of the retainer is split into a left half part and a right half part from the middle part, and then split into two halves from the centre of a pocket hole along the axial direction of the left half part and the right half part of the retainer; the right half part of the retainer is rotated by 90 degrees clockwise or clockwise to stagger the axial split part, so that the centre of a beam on the right half part of the retainer is aligned to the centre of the pocket hole on the right half part of the retainer, and drilled with a connecting hole in a matched manner; four parts respectively formed in the radial direction and the axial direction of the retainer are placed between the inner ring and the outer ring of the bearing, and then rotate out with the inner ring from an outer ring roller, and finally are connected together by a plurality of inner hexagonal bolts and spring pins to form an integer. The retainer has high strength and high reliability, so that the bearing has high carrying capacity in the axial direction and the radial direction, and operating stability.
Owner:洛阳瑞成轴承有限责任公司
Coupler for shaft suspending type installing direct drive motor and rigid design method thereof
ActiveCN110671436AImprove radial load capacityThe direction of rotation does not affectYielding couplingRolling contact bearingsCouplingElectric machinery
Owner:ZHUZHOU TIMES NEW MATERIALS TECH
Combined type rubber metal joint bearing and method
InactiveCN107327480AImprove radial load capacityReduce vibrationSliding contact bearingsRoad vehiclesMetalPetroleum engineering
The invention provides a combined type rubber metal joint bearing and method. The metal joint bearing comprises a joint inner ring and a joint outer ring. A core shaft is embedded into the joint inner ring. The joint outer ring is sleeved with a rubber bushing. The joint outer ring abuts against an inner sleeve of the rubber bushing. A rubber check ring is embedded between the core shaft and the inner sleeve in a sleeved manner. An inner check ring of the rubber check ring abuts against the core shaft. An outer check ring of the rubber check ring abuts against the inner sleeve of the rubber bushing. According to the joint bearing, the joint outer ring is sleeved with the rubber bushing, and with the rubber bushing, the radial bearing ability and the radial buffering performance of the metal joint bearing are improved. The rubber check ring is embedded between the core shaft and the rubber bushing, the rubber check ring can generate damping force to stop deflection of the core shaft when the core shaft deflects, and thus vibration and noise generated in the deflection process of the core shaft can be reduced substantially.
Owner:ZHUZHOU TIMES NEW MATERIALS TECH
Eccentric pin structure
ActiveCN107956772AImprove radial load capacityApplicable load requirementsBoltsRod connectionsEngineeringStructural engineering
An eccentric pin structure comprises a connecting rod and a connecting fork. The connecting rod is connected with the connecting fork through an eccentric connecting mechanism, a pin hole is formed inthe connecting rod, a pin fixing hole and a pin cover fixing hole are oppositely formed in the connecting fork, the eccentric connecting mechanism comprises an eccentric pin and an eccentric pin cover, a second locking hole is formed in the side of the pin cover fixing hole in the connecting fork, one end of the eccentric pin cover is matched with the second locking hole in a limited manner, theother end of the eccentric pin cover is matched with the pin cover fixing hole in an inserted manner, a first locking hole is formed in the side of the pin fixing hole in the connecting fork, one endof the eccentric pin is matched with the first locking hole in a limited manner, and the other end of the eccentric pin sequentially penetrates the pin fixing hole and the pin hole and then is fixedlyconnected with the eccentric pin cover through a fixing bolt. The eccentric pin structure is firm in connection, excellent in radial bearing capacity, small in arrangement space and high in adjustment precision.
Owner:DONGFENG COMML VEHICLE CO LTD
Double-lip sealing type four-point contact ball turntable bearing
InactiveCN102966665AImprove sealingIncrease the number ofBall bearingsBearing componentsEngineeringSteel ball
The invention belongs to the technical field of bearings, and provides a double-lip sealing type four-point contact ball turntable bearing. The double-lip sealing type four-point contact ball turntable bearing comprises an inner ring (4), an outer ring (1) and a steel ball (2), wherein an upper sealing ring (3) and a lower sealing ring (7) have double-lip sealed annular structures; two lips which extend towards the inner side or outer side and are used for realizing sealing functions are formed in bodies (9) of the upper sealing ring (3) and the lower sealing ring (7); the bodies (9) of the upper sealing ring (3) and the lower sealing ring (7) are positioned in sealing slots of the outer ring (1) or the inner ring (4); the lip I (10) is hasped on the end face of the inner ring (4) or the outer ring (1); and the lip II (11) is hasped on the outer diameter surface of the inner ring or the inner diameter surface of the outer ring. The double-lip sealing type four-point contact ball turntable bearing has high dustproof, waterproof and ageproof functions, can prevent internal lubrication fat from leaking and has the characteristics of good sealing effect, compact structure and convenience in mounting, maintenance and use.
Owner:洛阳瑞成轴承有限责任公司
Radial-axial permanent magnetic bearing system device
ActiveCN110486382ACompact structureIncrease speedBearing coolingBearingsBall bearingMagnetic bearing
The invention discloses a radial-axial permanent magnetic bearing system device. The radial-axial permanent magnetic bearing system device comprises a right bearing seat, a right end cover, a right cooling sleeve, a right top seat, a right auxiliary angle contact ball bearing, an axial static magnetic ring, an axial static magnetic ring seat, a radial upper static semi-magnetic ring, a sealing ring, a left bearing radial upper static semi-magnetic ring seat, a left end cover, a left top seat, a permanent magnet bearing inner ring moving magnetic ring seat, a left auxiliary angle contact ball bearing, a moving magnetic ring, a left cooling sleeve, a radial lower static semi-magnetic ring, a sealing ring, a left bearing radial lower static semi-magnetic ring seat and the like. The device further comprises an auxiliary mechanical control protection system composed of a series of parts such as an auxiliary bearing except a combination device composed of the radial permanent magnet bearingand the axial permanent magnet bearing, the device can overcome the defect that a traditional permanent magnet bearing is single in structure and cannot bear the radial-axial composite load in actualapplication, and the application range of the permanent magnet bearing is expanded. The device has the advantages of being compact in structure, high in rotating speed, long in service life and the like, not only has good radial bearing capacity, but also has good axial bearing capacity.
Owner:SHANGHAI UNIV
Core bag structure hobbing cutter, and use method as well as application thereof
InactiveCN104265320AImprove radial load capacityImprove carrying capacityTunnelsHobbingThrust bearing
A core bag structure hobbing cutter, and a use method as well as application thereof are disclosed. The core bag structure hobbing cutter comprises a cutter shaft, a cutter body, a cutter ring and an end cover. A shaft shoulder is arranged at the central position of the cutter shaft; steps are symmetrically arranged on the two sides of the shaft shoulder; the cutter shaft runs through the cutter body; thrust bearings are arranged on the two sides of the shaft shoulder respectively; a cylindrical roller bearing is arranged between the thrust bearings and the steps. According to the core bag structure hobbing cutter, the cylindrical roller bearing and the thrust bearings are adopted to replace the traditional bearings, the radial bearing capability of the hobbing cutter is increased by increasing the number of cylindrical rollers, and the axial bearing capability of the hobbing cutter is increased by virtue of the thrust bearings, so that the bearing capability of the whole hobbing cutter is correspondingly increased, the wear resistance of the hobbing cutter is enhanced, and the service life of the hubbing cutter is prolonged.
Owner:SHANDONG TECHGONG GEOTECHN ENG EQUIP CO LTD
Sealing waterproof structure of deep groove ball bearing
ActiveCN107165941AImprove axial load capacityImprove radial load capacityBearing componentsBall bearingWater vapor
The invention relates to a sealing waterproof structure of a deep groove ball bearing. The sealing waterproof structure of the deep groove ball bearing comprises an inner ring, an outer ring, a steel ball, a retainer and a sealing device. An inner groove and an outer groove which are used for accommodating the steel ball and allowing the steel ball to slide therein are formed in the inner ring and the outer ring correspondingly. The inner groove and the outer groove are each a combined groove which is composed of two arcs, wherein the curvatures of the arcs are larger than the curvature of the steel ball, and the two sides of each arc are symmetrical. The sealing device comprises a first sealing ring and a second sealing ring, wherein the first sealing ring is arranged on one sides of the inner ring and the outer ring, and the second sealing ring is arranged on the other sides of the inner ring and the outer ring. A vacuum airtight environment is formed through the inner ring and the outer ring, dust and water vapor are prevented from entering the bearing, and thus the sealing effect of the deep groove ball bearing is effectively ensured.
Owner:NINGBO WANFENG BEARING
Rotary connector
ActiveCN105465199AImprove radial load capacityCouplings for rigid shaftsMechanical engineeringBearing capacity
The invention relates to a rotary connector. The rotary connector comprises a supporting frame and an adapter, a rotating shaft with the rotating axis extending in the front and back direction is rotationally assembled on the supporting frame through a rotating shaft bearing, the adapter is rotationally assembled on the supporting frame through an adapter bearing, and the adapter is connected with a rotating shaft in a standstill locking manner. The adapter is in rotary fit with the supporting frame through the adapter bearing, the adapter bearing singly bears the radial load or bears the radial load together with the rotating shaft bearing, the adapter is in standstill locking fit with the rotating shaft to transfer torque, and the matching relationship between the rotating shaft and the supporting frame does not need to be changed; and the appropriate adapter bearing is selected according to needs, and is not like the manner in the prior art that the radial load is only borne by the rotating shaft bearing, and the radial bearing capacity of the rotary connector is improved.
Owner:CHINA AVIATION OPTICAL-ELECTRICAL TECH CO LTD
Combined energy absorption structure
ActiveCN111186459AImprove energy absorptionStable cushioningRailway wheel guards/bumpersBumpersEnergy absorptionHoneycomb
The invention discloses a combined energy absorption structure, and relates to an energy absorption structure. The invention aims to solve the problem that the overall energy absorption capacity of the filling structure is reduced due to invasion of a thin-walled tube into a honeycomb when the existing honeycomb filling thin-walled tube structure is compressed. The energy absorption structure comprises a buffer energy absorption block (1) and a porous thin-walled tube (2), the buffer energy absorption block (1) is a variable-thickness energy absorption block, the porous thin-walled tube (2) isa variable-thickness thin-walled tube, and the porous thin-walled tube (2) is filled with the buffer energy absorption block (1) to form an energy absorption structure (3). The buffer energy absorption block (1) is a honeycomb block, a foam block or a rubber block. The strength of the buffer energy absorption block (1) is equal or variable. The porous thin-walled tube (2) comprises an inner thin-walled tube (4), an outer thin-walled tube (5) and a stiffened plate (6), the inner thin-walled tube (4) is embedded into the outer thin-walled tube (5), and the stiffened plate (6) is arranged between the inner thin-walled tube (4) and the outer thin-walled tube (5). The combined energy absorption structure is applied to the fields of automobiles, aerospace and the like with buffer systems.
Owner:HARBIN INST OF TECH
Sliding bearing cooling lubricating device
InactiveCN104514803AReduce temperature riseReduce wearBearing componentsSliding contact bearingsCooling effectEngineering
The invention provides a liquid lubricating sliding bearing. A bearing gland is provided with a through hole and an inclined through hole, when a pump rotor rotates at a high speed, two circulating lubricating loops can be formed. The device provided by the invention solves the problems of unsatisfactory lubricating effect of a liquid lubricating sliding bearing in a sealless pump motor sealed cavity, poor cooling effect, easy wear and other problems in the prior art, and is mainly used for high-speed shielding pumps.
Owner:JIANGSU UNIV
Cylinder liner and preparation method thereof
ActiveUS9500282B2Improve radial load capacityIncrease bite forceMolten spray coatingCylinder headsMechanical engineeringBiting force
A cylinder liner with a plurality of protrusions on its outside surface and the manufacturing method thereof are disclosed. The protrusions are Ω-shaped, P-shaped or taper-shaped, and the Ω-shaped, P-shaped and taper-shaped protrusions are accounted for 50-99.5%, 0.5-30% and 0-20% of the total number of protrusions, respectively. The density of the protrusions on the outside surface of the cylinder liner is 15-65 per square centimeter. The outer surface of the protrusions of the cylinder liner is curved, and has a large contact area and a concave which can be filled by an aluminum sheath to improve the radial bearing capacity, so as to effectively improve the bite force between the cylinder liner and the outside aluminum sheath and prevent the cylinder liner from breaking away from the cylinder body.
Owner:GUANGDONG ZHAOQING POWER ACCESSORIES
Intracavity internal feedback throttling liquid static electric spindle
ActiveCN109676520AImprove radial load capacityImprove rigidityGrinding machine componentsLarge fixed membersEngineeringMachining
The invention discloses an intracavity internal feedback throttling liquid static electric spindle. The intracavity internal feedback throttling liquid static electric spindle comprises a machine body, a liquid static bearing and a rotary shaft. The rotary shaft is in rotary fit into the machine body through the liquid static bearing, an even number of throttlers are arranged on the inner wall face of the liquid static bearing, and every two throttlers are oppositely arranged. Each throttler comprises a throttling boss, an oil collecting oil cavity and a working oil cavity. The throttling bosses communicate with oil inflow branches outside the liquid static bearing, the oil collecting oil cavities surround the throttling bosses, the working oil cavities surround the oil collecting oil cavities, the working oil cavities are separated from the oil collecting oil cavities through first oil sealing flanges, and the oil collecting oil cavity of one of every two opposite throttlers communicates with the working oil cavity of the other one of every two opposite throttlers. By means of the intracavity internal feedback throttling liquid static electric spindle, effective throttling, stableperformance and easier machining can be guaranteed, and then the rigidity of the rotary shaft is improved.
Owner:GUANGZHOU HAOZHI ELECTROMECHANICAL
Cylindrical roller bearing and assembling method thereof
The invention provides a cylindrical roller bearing and an assembling method thereof. The cylindrical roller bearing comprises an inner ring, an outer ring, a retainer and a plurality of cylindrical rollers; the retainer comprises two annular end surface parts and a plurality of beams which are connected to the two end surface parts, wherein limiting grooves are formed in the axial ends of the outer ring respectively; the radial outer ends of the two end surface parts are limited by the limiting grooves, so that the retainer is prevented from being separated from the outer ring; alternatively,the limiting grooves are formed in the axial ends of the inner ring respectively, the radial inner ends of the two end surface parts are limited by the limiting grooves, so that the retainer is prevented from being separated from the inner ring. According to the cylindrical roller bearing, the radial outer ends or the radial inner ends of the two end surface parts are limited by the limiting grooves, and the retainer is prevented from being separated from the outer ring or the inner ring; and flanges are not needed to arranged on the outer ring and or the inner ring, not only the axial lengthof the cylindrical roller can be increased, the radial bearing capacity of the cylindrical roller bearing is improved, and a withdraw tool groove needed for machining a roller path can be saved, andtherefore the machining cost of the outer ring or the inner ring can be reduced.
Owner:SCHAEFFLER TECH AG & CO KG
Novel high-speed heavy-duty high-speed rail bearing
PendingCN110966307AFit closelyReduce coefficient of frictionBearing componentsRolling resistance optimizationBall bearingClassical mechanics
The invention relates to a bearing, in particular to a high-speed heavy-duty high-speed rail bearing with a middle ball. The novel high-speed heavy-duty high-speed rail bearing is composed of an outerring with the middle ball, a deep groove ball bearing inner ring, two double-half inner rings and three rows of rolling bodies, wherein a deep groove ball bearing rolling body track is arranged in the middle of the inner circumference of the outer ring, circular roller tracks are respectively arranged on both ends of the deep groove ball bearing rolling body track at an interval, and circular rollers are respectively arranged in the tracks. A deep groove ball bearing structure is arranged in the middle of the inner circumference of the outer ring and between double sections of circular rollers or cylindrical rollers, the advantages of pure rolling friction of two-point contact of ball rolling bodies, high rotating speed and capability of bearing two-way combined load are fully used so asto design a mechanical structure of the middle ball, the scheme that the axial force of a roller contact angle bearing is increased by a double-section tapered roller bearing is replaced, roller deflection and frictional heating which are caused by stress concentration of the small end of a tapered roller can be effectively reduced, and the rotating speed and the rotary accuracy of the bearing areincreased. Because SKF bearing materials verify that the load carried by the rollers is uniformly distributed on the rollers and a raceway contact surface by virtue of the special circular cambered surfaces of the circular rollers, the middle ball is arranged between the double-row circular rollers, so that the radial bearing capacity of the bearing can be greatly increased, and low friction, lowtemperature rise and long service life are realized.
Owner:孟萍
Assembly method of ball joint coupling and ball joint base of ball joint coupling
ActiveCN104132072ARealize the assemblyEasy to assembleYielding couplingEngine lubricationCouplingEngineering
The invention relates to a ball joint coupling, in particular to an assembly method of a ball joint coupling and a ball joint base of the ball joint coupling. The ball joint base comprises a sleeve; the inner peripheral face of the sleeve is a concave spherical face provided with two key grooves; the concave spherical face is further provided with mounting grooves which are used for inserting a positioning ball in the extension direction of the outer end faces of the positioning ball and which penetrate the sleeve in the axial direction; the mounting grooves are in one-to-one correspondence with the key grooves; each mounting groove comprises a groove bottom communicated with the corresponding key groove and sidewalls, the sidewalls arranged on two sides of the groove bottom extend axially along the sleeve and are used for being in contact fit with two outer end faces of the positioning ball so as to insert the same into the mounting grooves, a distance from the groove bottom of the mounting groove to the center of the positioning ball is larger than the radius of the positioning ball and smaller than a distance from the groove bottom of the corresponding key groove to the center of the positioning ball, a distance between the sidewalls of the mounting groove is not smaller than that between the two outer end faces of the positioning ball. By the use of the assembly method of the ball joint coupling and the ball joint base of the ball joint coupling, the problem that the existing ball joint coupling is complex to assemble is solved.
Owner:河南蒲瑞精密机械有限公司
A plastic-coated tape-reinforced hollow-wall winding pipe and its manufacturing method
ActiveCN105318116BRice weightIncreased ring stiffnessFlexible pipesTubular articlesMolten stateEngineering
The invention discloses a plastic covered belt reinforced hollow-wall wound pipe and a manufacturing method thereof. The plastic covered belt reinforced hollow-wall wound pipe comprises a square pipe, molten glue and a plastic covered belt. The plastic covered belt is longitudinal placed on one side face or two sides of the square pipe to form the plastic covered belt reinforced square pipe. The plastic covered belt reinforced square pipe is arranged on a roller mold to be spirally wound, the molten glue in a molten state is extruded to bond gaps, and therefore the plastic covered belt reinforced hollow-wall wound pipe is formed. The manufacturing method of the plastic covered belt reinforced hollow-wall wound pipe mainly comprises the steps of extruding shaping of the square pipe, attaching of the plastic covered reinforcement belt and winding forming. The plastic covered belt reinforced hollow-wall wound pipe is simple in structure, low in weight per meter and simple in production process, and has the characteristics of saving energy and being environmentally friendly.
Owner:GUANGDONG YONGGAO PLASTIC INDUSTRY DEVELOPMENT CO LTD
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