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

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.

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 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.

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 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 floating type guide hook mechanism of a rapier loom. The floating type guide hook mechanism of the rapier loom comprises a shuttle race which is arranged in the weft knitting direction, a rapier head and a rapier belt which is connected with the rapier head are arranged above the shuttle race, a power drive device which enable the rapier head to move in the shuttle race direction is arranged on the rapier head, and the two sides of the shuttle race are evenly provided with multiple guide hooks, wherein a groove used for supporting the rapier head is formed in each guide hook in the direction facing the shuttle race. Due to the fact that the floating type guide hook mechanism is arranged on the rapier loom, the friction of the rapier head is smaller, and warp is not prone to end braking.