53results about How to "Strong magnetic attraction" patented technology

The present invention is a bar type dental attachment for implants that makes use of magnetic attractive force to secure a denture in place. This bar type dental attachment can rotate corresponding to the movement of the denture during occlusion. The present invention has excellent wear resistance and makes insertion and removal of the denture easy. The present invention has a bar type keeper with an arced attractive face with a constant radius of curvature, and a magnetic assembly that comprises a magnet, a pair of yoke plates sandwiching the magnet, and a seal material made of anticorrosive non-magnetic material that covers the magnet and is hermetically sealed. The attractive surface of the magnetic assembly is curved to fit the keeper.

The invention relates to a magnetic non-positive connection between a bicycle pedal and the shoe of a cyclist, generated by planar permanent magnet elements (1,1'), with a displaceable guided mounting in the open regions (3,3') of the pedals, which undergo an even, easily detachable, magnetic non-positive interaction with soft magnetic non-positive connection elements (11), inserted in the tread region of the conventional bicycle shoe (12) and hence an unlimited relative movement, in particular, in rotation, between the bicycle shoe and the pedal, without causing undesired separation of the magnetic non-positive connection.

A magnetic roll structure for a magnetic trolley comprises a roller shaft and a bearing sleeve, a copper worm wheel is fixed in the middle sleeve of the roller shaft, and also comprises a roller assembly symmetrically arranged at both ends of the roller shaft; the roller assembly comprises an outer roller sleeve, an inner spacer sleeve and an inner roller sleeve sequentially sleeved on the rollershaft; Fe-B, any one or combination of a rare earth permanent magnetic Sm2CO17 sinter ferrite alloy and an aluminum-nickel-cobalt alloy AlNiCo, As that magnetic steel is replace, it is not easy to lose magnetism in use, the volume of the magnetic steel block is reduced, This reduces the driving force of the motor, As that labor intensity is reduce, the structure of the copper worm wheel is chan, so that the roller wheel is not fixedly connected with the copper worm wheel, the concentric degree doe not change after the copper worm wheel is replaced, secondary machining is not required to correct the copper worm wheel, the maintenance cost is reduced, the weight of the copper worm wheel is reduced, and the energy consumption is reduced.

The invention provides an intermittent agricultural seeder. The intermittent agricultural seeder comprises a seeder body which comprises a seeding tank, an exhausting cylinder and an exhausting transmission rod, wherein a driving gear is arranged in the seeding tank, a driven gear meshed with the driving gear is arranged on one side of the driving gear, an intermittent operation rod is arranged onone side of the driven gear, an intermittent blocking block is arranged at the bottom of the intermittent operation rod, a discharging hole is formed in the bottom of the intermittent blocking block,a driving rolling wheel I is arranged at the bottom of the seeding tank, a driving rolling wheel II is further arranged at the bottom of the seeding tank, a gear tank is arranged on one side of the seeding tank, and a cone gear I is arranged in the gear tank. The intermittent agricultural seeder is reasonable in design and convenient to use, and automatic intermittent seeding can be realized.

The invention discloses a magnetic badminton racket comprising: a handle, a shaft, a head frame including an outer surface and an inner surface and a plurality of gut strings crisscrossed within the inner surface. The head frame is provided with a magnet mounting section centered on its top, and several sockets are provided into the outer surface, spaced from each other and vertical to the outer surface. Several small neodymium magnets are fixed within the sockets, with their top surfaces exposed and flush with the outer surface. Each magnet is in the shape of a cylinder, cuboid, truncated cone or truncated quadrangular pyramid, which possesses strong magnetic attraction, is not subject to detaching and would not affect the aesthetic appearance of the racket. The invention also discloses a shuttlecock suitable for use together with the racket, to enable to pick up shuttlecock conveniently by mean of magnetic attraction therebetween.

The invention discloses a high-safety strong-drive traction household elevator, and belongs to the field of household elevators. According to the high-safety strong-drive traction household elevator, a plurality of magnetic expansion rods and magnetic suction rods are arranged, when an elevator car shakes, the magnetic expansion rods can play a role in buffering, and the discomfort of people in the elevator car is reduced; when the elevator car shakes seriously, the magnetic expansion rods make contact with the inner wall of an elevator shaft, so that inner push magnetic sheets are sunken, outer expansion bags expand outwards, the sunken magnetic sheets are extruded out of strip seams, at the moment, the interiors of the multiple sunken magnetic sheets are extruded, the magnetism is enhanced, then the sunken magnetic sheets are mutually extruded and adsorbed, the multiple magnetic expansion rods are connected into a whole, the buffering part for shaking of the elevator car is changed into a plane from a point, the buffering effect is remarkably improved, and the potential safety hazards caused to people in the elevator car are effectively reduced; and when the magnetic suction rods are close to the inner wall of the elevator shaft, a certain mutual adsorption force is generated between the magnetic suction rods and the inner wall of the elevator shaft, so that the shaking amplitude can be further reduced, and the potential safety hazards are reduced.

A magnetic flux converter, comprising a housing, a coil bobbin installed inside the housing, a coil wound in the middle of the coil bobbin, a permanent magnet, an iron core and a spring connected to the iron core, the top of the housing is provided with an opening, and one end of the iron core It is attracted to the permanent magnet, and the ejector rod at the other end of the iron core extends to the opening at the top of the housing; it also includes a magnetically conductive coil, which is located between the coil and the permanent magnet. In the magnetic flux converter of the present invention, a magnetic conducting coil is added between the coil and the permanent magnet, so that the magnetic force lines of the permanent magnet and the coil are redistributed, and the magnetic force lines of the permanent magnet and the coil pass through the magnetic conducting coil to form a new magnetic circuit; the electromagnetic field will change the permanent The magnetic path of the magnetic field makes it possible to make the resultant force of the electromagnetic force and the elastic force greater than the attraction force of the permanent magnet to the iron core, and the iron core can move and push out no matter when the permanent magnet is installed upright or reversely (or when a positive and negative power supply is applied to the coil). The ejector rod performs the tripping action.

The invention relates to the technical field of zinc oxide production and processing, and discloses a cooling device for preparing nano zinc oxide. The cooling device comprises a cooling box, whereina servo motor is fixedly installed at the top of the cooling box, a rotating rod is fixedly connected to the output end of the servo motor, a spiral pipe is arranged in a cavity of the cooling box, and linkage devices which are sequentially distributed in an array mode from top to bottom are arranged on the inner wall of the cooling box. According to the cooling device for preparing the nano zincoxide, the rotating rod and fan plates are arranged, the rotating fan plates stir cooling liquid in the cavity of the cooling box, the cooling liquid located in the spiral center of the spiral pipe isstirred, the cooling efficiency of the nano zinc oxide is improved, and the problems that the cooling liquid at the center position of the spiral pipe is heated by the nano zinc oxide, so that the cooling liquid is heated and does not circulate, and the cooling efficiency is reduced are solved; and through continuous stirring of the fan plates, the cooling efficiency of the nano zinc oxide is improved, the circulation and heat exchange efficiency of the cooling liquid in the cavity of the cooling box is improved, and the cooling device has high practicability.

The invention relates to a permanent magnet motor assembling support and an operation method thereof, the permanent magnet motor assembling support comprises a bedplate, a stator, a rotor and an end cover, the bedplate is slidably connected with an installation mechanism for installing the stator, the installation mechanism is connected with a driving mechanism for driving the installation mechanism to move horizontally, the stator is detachably connected to the installation mechanism, and the stator is detachably connected to the end cover. And the rotor and the end cover are both arranged above the bedplate. The stator is installed on the installation mechanism, at the moment, the stator can slide on the platen through the driving mechanism, the stator can be arranged on the periphery of the rotor in a sleeving mode through sliding, one end of the stator is clamped on the end cover in a sleeving mode, assembling of the permanent magnet motor is completed, and the rotor is a permanent magnet and is high in magnetic attraction force; when the permanent magnet motor is assembled in the mode, the rotor can be prevented from deviating due to magnetic attraction force, meanwhile, the rotor is prevented from being lifted manually, workers are prevented from being scratched, the body health of the workers is prevented from being affected, and the permanent magnet motor can be assembled conveniently and efficiently.

The invention discloses a magnetic transmission type array eddy-current probe aiming at pipeline defect detection and a method. The magnetic transmission type array eddy-current probe comprises an excitation probe device and a detection probe device, wherein the excitation probe device is formed by a permanent magnet framework which can be arranged on the outer wall of a pipeline in a sliding and sleeving way and an excitation coil which is wound on the permanent magnet framework; the detection probe device is formed by a ferromagnetic material framework which can be arranged in the pipeline in the sliding and sleeving way, multiple PVC (Polyvinyl Chloride) frameworks which are in a circular array, circumferential detection coils which are wound on the PVC frameworks and a laser head; multiple circumferential detection coils in the circular array can be used for detecting defects existing in the wall of the pipeline and can be simultaneously used for locating axial and circumferential positions of the defects existing in the wall of the pipeline; the frameworks of the excitation probe device and the detection probe device have magnetic adsorption capacity, so that the situation of ensuring the synchronicity of movement of the excitation coil and the multiple circumferential detection coils along an axial direction of the pipeline can be realized through a non-contact mode. Compared with a conventional non-penetration type eddy-current probe, the magnetic transmission type array eddy-current probe disclosed by the invention has similar detection sensitivity on the defects on the inner wall and the outer wall of the pipeline, and meanwhile, for the defects in larger depth, the problems of signal saturation and impossibility in quantification do not exist.

The invention discloses a soldering handle fixing steel ring, which comprises a steel ring main body, a solder handle is embedded in the middle of the steel ring main body, a cutout is opened on one side of the steel ring main body, and a positioning device is embedded in the inside of the cutout. The middle part of one side of the positioning block is fixedly installed with a boss, the two sides of the positioning block close to the main body of the steel ring are provided with installation grooves, and the insides of the two installation grooves are slidingly connected with installation platforms. The installation table is welded with the main body of the steel ring. The present invention solves the problem that the existing solder handle fixed steel ring is generally fixed, and the installation method is single. When damage occurs, it is easy to cause the problem of unchanged maintenance. The adjustable performance of the steel ring is poor, and it is generally installed by direct socketing. When vibration occurs during processing, the steel ring is easily rotated, so that the tightness of the installation is reduced.