32results about How to "Eliminate contact friction" patented technology

The invention relates to a magnetism transmission gear pair of a novel transverse magnetic field, which can be widely applied to wind power generation, electric cars, ship drive and other industrial transmission fields requiring direct drive. The magnetism transmission gear pair is characterized in that a driving wheel and a driven wheel of the magnetism transmission gear pair are of a flat disk shape, 2pr driving wheel permanent magnets 3 are distributed on the driving wheel, and 2ps driven wheel permanent magnets 7 are distributed on the driven wheel; a ferromagnetic magnetic modulation grid 6 playing a role of modulating an air-gap magnetic field is arranged between the driving wheel and the driven wheel, air gaps are reserved between the ferromagnetic magnetic modulation grid 6 and the end surfaces of the driving wheel and the driven wheel, and the ferromagnetic magnetic modulation grid 6, the driving wheel and the driven wheel have no mechanical contact and are distributed along the same axis; the air-gap magnetic field Bg passes through an air-gap plane along a route parallel to a rotation axis to form a transverse magnetic field of the magnetism transmission gear pair; and during working, power speed change transmission without mechanical contact and friction is realized by utilizing a principle of heteropolarity attraction of an N pole and an S pole of a permanent magnet material.

Provided is a dual mechanical port magnetic conductance harmonic type electromagnetic gear composite permanent magnet motor which can be widely applied to industrial transmission fields such as wind power generation, electric automobiles, ship driving and server driving. The electromagnetic gear composite permanent magnet motor is characterized is that main transmission components of the electromagnetic gear composite permanent magnet motor consists of a stator formed of a stator iron core (9) and a stator winding (8) having 2ps poles, a permanent rotor formed of a rotor iron core (17) equipped with 2pr rotor permanent magnets (18) and an output shaft (16), and a salient pole magnetic conductance wave rotor (6) having Zb salient poles, wherein a numerical difference between the number of pole-pairs ps and pr is relatively small; and the stator, the permanent magnet rotor and the salient pole magnetic conductance wave rotor (6) are coaxially disposed, are mutually coupled through a radial air-gap magnetic field, and are mutually coupled in a salient pole straight axis area of the high-speed rotating salient pole magnetic conductance wave rotor (6) by using a principle of heteropolarity magnetic field attraction with a small pole difference so as to drive the permanent magnet rotor with a small pole difference to rotate at a low speed. Therefore, power speed changed and torque conversion controlled drive with no mechanical contact and no friction is realized.

The invention provides a high-performance fluid damnailg vibration isolator. The high-performance fluid damnailg vibration isolator comprises an upper connecting piece, a lower connecting piece, a rigid rod, an upper main corrugated pipe, a lower main corrugated pipe, an upper buffering corrugated pipe and a lower buffering corrugated pipe, wherein a damnailg hole is formed in the axis of the rigid rod, a first flange is arranged outside the rigid rod, the inner rings of a second flange and a third flange are connected with the two ends of the rigid rod through a diaphragm spring, and the outer rings of the second flange and the third flange are fixedly connected with the upper connecting piece; the upper main corrugated pipe is located between the first flange and the second flange, and the lower main corrugated pipe is located between the first flange and the third flange; the upper buffering corrugated pipe is arranged on the upper side of the second flange, and the lower buffering corrugated pipe is arranged on the lower side of the second flange; the upper main corrugated pipe, the lower main corrugated pipe, the upper buffering corrugated pipe and the lower buffering corrugated pipe are communicated with the damnailg hole and are filled with a fluid medium. The high-performance fluid damnailg vibration isolator has the advantages of being free of friction and fluid damnailg, high in bending rigidity, and capable of improving the performance and application range of the isolator.

A novel magnetic drive oblique gear pair with an oblique air-gap magnetic field can be widely applied to the industrial drive field of wind power generation, electric cars, ship drive and the like with the requirement of direct driving. The novel magnetic drive oblique gear pair is characterized in that the inner hole of a stator of the magnetic drive oblique gear pair is conical internally; 2ps of stator permanent magnets 4 are distributed on an internally-conical stator iron core 3; a driving gear is conical externally; 2pr of driving gear permanent magnets 6 are distributed on an conical driving gear iron core 7; conical hollow driven gear ferromagnetic grids 5 for modulating the action of a space oblique air-gap magnetic field are mounted between the driving gear permanent magnets 6 and the stator permanent magnets 4; conical space oblique air gaps in coaxial distribution exist among the conical hollow driven gear ferromagnetic grids 5, the driving gear permanent magnets 6 and the stator permanent magnets 4 so as to form an air-gap magnetic field Bg of the magnetic drive oblique gear pair to pass along the conical space air gaps, thereby forming an oblique magnetic field of the magnetic drive oblique gear pair. During work, the power variable speed drive of the magnetic drive oblique gear pair is realized without mechanical contact and friction by utilizing the principle that N pole and S pole of a permanent magnetic material are attracted to each other based on different polarity.

The invention relates to a low power consumption outer rotor radial magnetic bearing with an upper-attracting and lower-repulsing structure of a permanent magnet, belonging to the field of the magnetic suspension bearing. The magnetic bearing consists of an outer magnetic-conducting ring, an outer magnetic-insulating ring, stator iron cores, an exciting coil, an inner permanent magnetic semi-ring, rotor iron cores, an inner magnetic-insulating ring, an inner magnetic-conducting ring, an outer permanent magnetic ring, air gaps and a rotating shaft, wherein eight electromagnetic poles and four permanent magnetic poles are established in the positive and negative directions of an X axis and a Y axis of the stator iron core in total; the inner magnetic-insulating ring is arranged among permanent magnetic iron cores and an electromagnetic iron core on a stator; the inner permanent magnetic semi-ring is clamped between the two permanent magnetic iron cores in the negative direction of the Y axis of the stator by the inner magnetic-conducting ring; the air gaps are arranged among the stator iron cores and the rotor iron cores; the outer magnetic-insulating ring is arranged between a permanent magnetic iron core ring and an electromagnetic iron core ring; the outer magnetic-conducting ring is arranged between the permanent magnetic iron core ring and the permanent magnetic iron core ring; and the outer permanent magnetic ring is clamped at the middle part of the outer permanent magnetic ring. The structure can solve the problems of gravity and power consumption of the rotating shaft of the magnetic suspension bearing, thus leading the bearing to have the advantages of low power consumption, reliable performance and convenient manufacture and the like. In addition, the low power consumption outer rotor radial magnetic bearing can be used as no-contact support parts of rotating equipment, such as a wind-driven generator, a motor, a molecular pump, a high-speed bearing.

A device is provided for remotely racking circuit breakers and contactors that are housed within a housing structure, such as a circuit breaker cell or switchgear cabinet.

The invention provides a small-range magnetic conductance harmonic type magnetic gear pair of a radial magnetic field. The magnetic gear pair can be widely applied to such industrial transmission fields as wind power generation, electric automobiles, ship drive and the like. The magnetic gear pair is characterized in that the magnetic gear pair comprises a permanently magnetic stator consisting of a stator core 6 and 2ps stator permanent magnets 7, a permanently magnetic rotor provided with 2pr rotor permanent magnets 8 and a salient pole type permeance wave rotor 5 with Zb salient pole waves; the numbers of pole pairs ps and pr are small in difference, and the pole pairs ps and pr are relatively prime; the permanently magnetic stator, the permanently magnetic rotor and the salient pole type permeance wave rotor 5 are coaxially mounted, and coupled with each other by a radial air-gap field; the permanently magnetic stator, and the permanently magnetic rotor and the salient pole type permeance wave rotor 5 are coupled in a salient pole direct-axis area of the salient pole type permeance wave rotor 5 which is rotated at the high speed based on the principle of attracting of a small-range heteropolarity magnetic field, so that the small-range magnetic gear pair is driven to rotate at the low speed, and the power transmission under the variable speed and torque can be achieved without mechanical touch and friction.

The invention relates to the field of artificial heart assisting devices, and in particular relates to a magnetic suspension axial flow type spiral driving device. The device comprises three parts, namely, a stator (1), a rotor (2) and a clearance (3); a winding coil (12) is arranged in the middle of an inner cavity of a stator housing (10); a stator left axial magnetizing permanent magnet (11) is arranged at the left side of the inner cavity of the stator housing (10), and while a stator right axial magnetizing permanent magnet (13) is arranged at the right side of the inner cavity of the stator housing (10); a liquid inlet (14) is arranged in the axial left side of the stator (1), and while a liquid outlet (15) is arranged in the axial right side of the stator (1); the rotor housing (20) is in a shape of a circular barrel of which the two ends are opened, wherein the rotor housing (20) is that a spiral driving sheet (24) is arranged at the inner part, a rotor iron core (22) is arranged in the middle of the outer wall, a rotor left axial magnetizing permanent magnet (21) is arranged at the left side of the outer wall, and a rotor right axial magnetizing permanent magnet (23) is arranged at the right side of the outer wall. The magnetic suspension axial flow type spiral driving device is simple and compact in structure, small in size, high in stability, and can be implanted into a human body for long-term use.

The invention relates to a small-range magnetic-conductive harmonic magnetic gear pair of an axial planar magnetic field, which can be widely applied to the industrial transmission fields of wind power generation, electric vehicles, ship driving and the like and is characterized in that the magnetic-conductive harmonic magnetic gear pair comprises a permanent-magnet stator plate with 2ps stator permanent magnets 2, a permanent-magnet rotor plate with 2pr rotor permanent magnets 6 and a magnetic-conductive wave rotor plate 3 of which the number of projecting-pole is Zb; the numbers of pole pairs ps and pr are positive integer pairs which are mutually relatively prime to form the low polar differential with a fixed difference; the permanent-magnet stator plate, the permanent-magnet rotor plate and the projecting-pole magnetic-conductive wave rotor plate 3 are sequentially coaxially distributed in the axial direction and are coupled with one another through an axial planar gas gap magnetic field, and mutually coupled in the projecting-pole straight shaft area of the projecting-pole magnetic-conductive wave rotor plate rotating at a high speed according to the principle that small-range heteropolar magnetic fields are mutually attracted, so as to drive the small-range magnetic gear pair to rotate at a low speed, so that the power variable-speed and variable-torque transmission is free of mechanical touch and friction.

A low-hysteresis contact type fingertip seal with a fin comprises a contact type fingertip sealing device matched with a rotor. The contact type fingertip sealing device is formed by connecting a front baffle, a high-pressure fingertip sheet and a low-pressure fingertip sheet. The low-pressure fingertip sheet is provided with a fin structure, and the fin structure and the surface of the low-pressure side of a fingertip beam are arranged in a T-shaped mode. The fin structure has a certain width in the axial direction and accordingly can provide supporting force for resisting the front-back differential pressure for the fingertip sheet, so that the fingertip sheet is protected against axial deformation under the action of fluid pressure, and the fin structure plays a role in axially supporting a rear baffle in a conventional contact type fingertip seal. The rear baffle structure is omitted. The hysteresis effect caused by friction force between a low-pressure fingertip sheet and the rear baffle of the conventional contact type fingertip seal is reduced. The dynamic sealing performance of the contact type fingertip seal is improved.

The utility model discloses a high-precision asphalt penetration tester. The tester comprises a rack, a measuring rod and probe module, an up-and-down walking module, a sample placing module and a control module, wherein the measuring rod and probe module comprises a connecting seat, a measuring rod and probe bracket, a measuring rod and a probe; the measuring rod is of a columnar structure and comprises a balance weight part, a main body part and a clamping part from top to bottom. An air bearing sleeve structure is fixedly arranged on the measuring rod probe support, a measuring rod hole isformed in the center of the air bearing sleeve structure, and an air cylinder cavity is formed in the lower middle position of the bearing sleeve structure. A load sensor is arranged at the lower endof the measuring rod; and the sample placing module is provided with an electronic refrigeration sheet. According to the tester, an air bearing structure and a pneumatic clamping structure are adoptedto reduce contact friction, a force measuring sensor is adopted to realize automatic needle alignment, a laser displacement sensor is adopted to realize non-contact measurement, and an electronic refrigeration sheet is adopted to realize accurate constant temperature, so that the asphalt penetration index performance detection precision is high, the operation is convenient, and the automation degree is high.

The invention belongs to the technical field of magnetic gear transmission, and particularly relates to a magnetic-gathering Halbach small-range magnetic gear reducer which comprises a machine shell, an end cover and an input shaft, two pieces of stator magnetic steel are arranged on the inner wall of the machine shell side by side in a spaced mode, two rotor discs are arranged on the input shaft side by side in a sleeved mode, and the space phase difference between the two rotor discs is 180 degrees. Rotor magnetic steel is respectively sleeved on the two rotor discs, the input shaft is respectively provided with non-magnetic baffle plates at two sides of the single rotor magnetic steel, the two rotor discs are also jointly provided with a crankshaft in series, two ends of the crankshaft are respectively connected with the two end covers, and the stator magnetic steel and the rotor magnetic steel are respectively of a magnetism gathering Halbach array arrangement structure. The magnetic gear reducer breaks through the bottleneck of friction clearance of a mechanical gear and the like, and compared with a mechanical reducer, the magnetic gear reducer has the advantages of being low in noise, free of friction, high in efficiency, high in durability and the like.

The present invention discloses a magnetic field modulation type electromechanical energy converter used for a hybrid electric vehicle. The magnetic field modulation type electromechanical energy converter comprises a chassis, and a stator, an outer rotor, a modulation ring and an inner rotor are arranged inside the chassis orderly from outside to inside. The inner surface of the stator is equipped with 12 salient poles, a three-phase centralized winding is placed in a cogging of the stator, and a first air gap is arranged between the stator and the outer rotor. The outer surface of the outer rotor is equipped with 8 outer rotor salient poles, 8 outer rotor permanent magnets are placed on the inner surface of the outer rotor uniformly, and a second air gap is arranged between the outer rotor and the modulation ring. The modulation ring is characterized by arranging 10 non conductive magnets and 10 magnetizers alternately to form a cylinder, the inner rotor is equipped with 12 inner rotor salient poles, an inner rotor permanent magnet is pasted on each inner rotor salient pole, and the three-phase centralized winding is embedded in a cogging of the inner rotor. The magnetic field modulation type electromechanical energy converter used for the hybrid electric vehicle of the present invention enables the transmission efficiency to be improved and the mechanical vibration, the mechanical wear and the noise to be reduced, thereby improving the reliability of a device, reducing the maintenance cost, and prolonging the service life of the device.

The invention discloses a flexible self-adaptive device of a cold chain logistics pipeline unit load device. A cold chain unit load device (3) runs in a cold chain transmission pipeline (2), a cold chain cargo compartment is arranged in the cold chain unit load device (3), the cold chain cargo is loaded in the cold chain cargo compartment, and flexible self-adaptive devices (1) are mounted in thecold chain unit load device (3) in the back and forth direction; and each flexible self-adaptive device (1) comprises a plurality of sets of multi-linkage mechanisms distributed in the circumferentialdirection of the cold chain transmission pipeline (2), an elastic mechanism and rollers (106), and the elastic mechanism at least drives the multi-linkage mechanisms to make the rollers (106) closelybe attached to the inner pipe wall of the cold chain transmission pipe (2). The flexible self-adaptive device breaks through the limitation of the fluid pipeline, realizes the pipeline transmission of the cold chain cargoes, further realizes the flexible self-adaption of the cold chain unit load device in the pipeline transportation process, and improves the transportation stability, safety and reliability.

The invention relates to the field of steel strip hot-dip galvanization, and especially relates to a sinking roller for hot-dip galvanization. A non-rotary sinking roller for hot dip galvanization is characterized in that: the axis of a fixed sinking roller body is provided with a mixing chamber; the outer surface of the fixed sinking roller body is provided with a jet orifice matrix, and an areacovered by the jet orifice matrix corresponds with a steel strip; the mixing chamber is communicated with each jet orifice of the jet orifice matrix through a jet tube; two ends of the mixing chamberare respectively connected with a high temperature zinc pump through a honeycomb duct; the output terminal of an ultrahigh temperature pressure meter is connected with the input terminus of an automatic control system through a pressure signal acquisition system; the output terminal of a zinc pump control system has a control connection with the high temperature zinc pump; and the input terminus of the zinc pump control system is connected with the output terminal of the automatic control system. Contact friction force between the steel strip and the surface of the fixed sinking roller body is eliminated in the invention, so a problem of the frequent replacement of the sinking roller caused by wearing is avoided, thereby the whole production power of a production line is improved and the labor intensity of operators is reduced.

The invention discloses a righting and anti-abrasion device for deepwater drilling water-insulation pipe section drill pipes. The righting and anti-abrasion device comprises drill pipe connecting pipes, rolling wheel supporting frames, rolling wheels, rolling wheel arresting cylinders, sealing rings, protective shells, supporting columns, supporting shells, rubber strips, screws and screw anti-abrasion gaskets, wherein the two ends of each drill pipe connecting pipe are provided with an internal thread and an external thread. The drill pipe connecting pipes are in threaded connection with thedrill pipes to rotate along with the drill pipes, the rolling wheel arresting cylinders are connected with the protective shells, and the outer portions of the protective shells are fluid flow passages; the supporting columns are arranged in the passages, the rubber strips are arranged on the supporting shells, and the rubber strips achieve the effect of buffering extrusion of the supporting shells and water-insulation pipes; and under the effect of the rolling wheels, the supporting shells and the water-insulation pipes do not conduct relative movement, and the righting and anti-abrasion purposes of the drill pipes and the water-insulation pipes in the ocean current movement and normal drilling processes are achieved. The righting and anti-abrasion device has the advantages that the righting and anti-abrasion device is completely supported to the water-insulation pipes, the drill pipes are fixed to the center of a borehole, rotation of the drill pipes only causes rotation of the rolling wheels, and the righting and anti-abrasion effects are achieved.