152 results about "Moving magnet" patented technology

The invention discloses a high-precision linear vibration feedback motor system, and relates to the technical field of precise electromagnetic driving, and the system comprises a core driving module which is a moving magnet type linear motor of a Halbach array magnetic circuit structure, and is integrated with a multi-physics field sensing unit; the dynamic parameter tracking module is used for acquiring a reed rigidity coefficient, a damping coefficient and a magnetic constant in real time when the motor runs, and establishing a dynamic displacement model based on a recursive least square method; a double-closed-loop control framework is adopted, an inner loop adopts field-oriented control, and an outer loop is based on model prediction control; the aging prediction unit activates a temperature rise compensation algorithm when the accumulated number of vibration times is greater than a set threshold value; the self-adaptive calibration engine is used for injecting a sweep frequency excitation signal when the system is started, and automatically compensating individual difference parameters according to the harmonic peak offset; and the digital twin mapping unit is used for establishing a real-time mapping relationship between the physical parameters of the motor and the virtual model, and dynamically correcting the model parameters by comparing the actual displacement with the model displacement.

The magnetic suspension blood pump is high in integration level, small in magnetic field coupling degree and high in regulation and control precision and comprises a pump shell, an impeller, a motor unit and a magnetic suspension unit, and the axial suspension state of the impeller is jointly maintained through the magnetic acting force between an electromagnet assembly and a suspension magnet assembly and the magnetic acting force between a motor stator assembly and a motor rotor magnet; the repulsive force of the static magnetic ring array and the movable magnetic ring array maintains the radial suspension state of the impeller. The magnetic suspension unit and the motor unit are arranged at the upper end and the lower end of the impeller respectively, the distance between the magnetic suspension unit and the motor unit is increased in space, the magnetic coupling effect between the magnetic suspension unit and the motor unit is greatly reduced, control difficulty is remarkably reduced through independent control of the magnetic suspension unit and the motor unit, and system stability is improved. The special structural design improves the space utilization rate, reduces the size of the pump body, disperses a heat source and reduces the heat dissipation pressure; the bias magnetic field provided by the suspension magnet provides open-loop magnetic force in the axial direction, the closed-loop control force needing to be provided by the electromagnet assembly is greatly reduced, and the purposes of saving energy and reducing consumption are achieved.

The invention discloses an ultrasonic robot tail end zero-rigidity constant-force driver and a control method thereof.The ultrasonic robot tail end zero-rigidity constant-force driver comprises a shell, a negative-rigidity structure, a positive-rigidity structure and a control circuit board, the shell comprises an external main frame, a top cover and a base, the negative-rigidity structure comprises a fixed magnet and a movable magnet set, and the positive-rigidity structure comprises a positive-rigidity structure and a negative-rigidity structure; the fixed magnet is fixedly installed on the base, the movable magnet set is fixedly installed on the top cover, the positive stiffness structure comprises a linear servo motor, a displacement sensor, a linear spring and a spring seat, the movable magnet set and the fixed magnet generate negative stiffness through magnetic field interaction, and the linear spring generates positive stiffness through deformation. And the resultant forces are offset to realize zero-rigidity constant-force output. The control circuit board is installed in the base and electrically connected with the linear servo motor and the displacement sensor. The method is used for solving the problems that in the prior art, scanning efficiency is low, the method is sensitive to measurement errors, and ultrasonic scanning requirements of complex scenes are difficult to meet.

The invention discloses a two-dimensional large-angle fast reflecting mirror device based on a sheet-shaped flexible support, a flexible support assembly comprises a flexible connecting sheet of a hollow structure and a flexible connecting rod, one side of the flexible connecting sheet is fixedly connected with a reflecting mirror assembly, and the other side of the flexible connecting sheet is fixedly connected with a base; the axial direction of the flexible connecting rod is perpendicular to the plane where the flexible connecting piece is located and penetrates through the center of the flexible connecting piece, one end of the flexible connecting rod is fixedly connected with the center of one side of the reflector assembly, and the other end of the flexible connecting rod is fixedly connected with the center of one side of the reflector assembly. The electromagnetic driving assembly penetrates through the flexible connecting piece and then is fixedly connected with the reflector assembly and the base. The sensor assembly is fixedly arranged at the central position of the base and is spaced from the reflector assembly by a first preset distance. Through the collaborative design of a flexible connecting piece-flexible connecting rod composite supporting structure and an obliquely-arranged moving magnet type electromagnetic driving assembly, the two-dimensional large-angle deflection capacity of the magnitude of + / -10 degrees is achieved.

The invention belongs to the technical field of medical instruments, and discloses a magnetic coupling sealing intervention pump which comprises a motor, a first supporting seat, a driving magnetic ring, a driven magnetic ring, an impeller and a first connecting shaft, and the first supporting seat is fixed to the outer wall of the motor in a sealed mode to form a first assembling cavity; the output shaft and the driving magnetic ring are coaxially and fixedly arranged and are both arranged in the first assembling cavity in a sealed mode, and the output shaft rotates to drive the driving magnetic ring to rotate synchronously. The bottom of the first connecting shaft is fixed to the first supporting base, the impeller is rotationally connected with the first connecting shaft, and the driven magnetic ring is fixed to the lower end of the impeller and drives the impeller to rotate synchronously through magnetic torque generated by coupling of the driven magnetic ring and the driving magnetic ring. Rotation of the output shaft of the motor is transmitted to the impeller through magnetic coupling transmission between the driving magnetic ring and the driven magnetic ring, so that direct mechanical connection and sealing structures are not needed between the output shaft of the motor and the impeller, the leakage problem possibly caused by mechanical sealing in a traditional pump is avoided, and the sealing performance and reliability of the intervention pump are improved.

The design method of the non-linear term offset moving-magnet vibrator meets the following conditions: (1) a moving-magnet vibrator body comprises an outer cylinder, a vibration transmission sheet, a stator assembly and a rotor assembly; and (2) the mover assembly is subjected to electromagnetic acting force of pushing force and pulling force in pairs at the same time and presents a push-pull type structural characteristic, so that linear terms in the acting force borne by the mover assembly are overlapped and become larger, and non-linear terms in the acting force borne by the mover assembly are partially or completely counteracted and are reduced, so that the linear terms in the acting force borne by the mover assembly are reduced, and the linear terms in the acting force borne by the mover assembly are reduced. And obtaining the moving magnet type vibrator with the counteracted nonlinear term.

The invention relates to the field of welding, in particular to a lead welding device for production of a high-voltage silicon stack assembly. In the prior art, the welding operation mostly depends on manual work or a simple mechanism for alignment and clamping, the problems of inaccurate positioning, large assembly deviation, unstable clamping and the like exist, and particularly in the application of high density, small size or complex structure, pseudo soldering, welding deviation or insufficient contact area of a lead body easily occurs. A lead welding device for production of a high-voltage silicon stack assembly comprises a shell. Two covers are rotationally arranged on the shell, two fixing frames are arranged in the shell, and a hopper is installed between the shell and the two fixing frames. A newly aligned movable magnet column is attracted through a fixed magnet column, automatic position correction of the rotating disc, the material pushing block and the lead body is achieved, in combination with limiting cooperation between a clamping groove and a clamping block, the positioning precision and the structural stability can be further improved, the welding attachment effect and the electrical connection strength can be improved, and the consistency and the welding reliability of products are fundamentally improved.

The invention provides an air guide device for reducing concrete bubbles, a construction system and a construction method, and relates to the technical field of building construction.The air guide device comprises an air guide pipe, a fixed magnet, a connecting pipe, a movable magnet and a pipe taking mechanism, the fixed magnet is arranged on the inner wall of the top of the air guide pipe, the top of the fixed magnet is inserted into the connecting pipe, and the movable magnet is arranged on the outer wall of the connecting pipe; the driving end of the pipe taking mechanism is arranged on the outer wall of the connecting pipe below the movable magnet; the construction system comprises the air guide device, a pouring formwork and a vibrator, the pouring formwork is arranged in a to-be-poured area, the air guide device is arranged on the inner side of the pouring formwork, and the vibrator is arranged near the air guide device during use, so that the air guide device resonates with the vibrator; the gas guide device and the construction system are adopted in the construction method. According to the construction system with the air guide device and the construction method, during vibration, the vibrator, the air guide device and the pouring formwork are controlled to be matched, the bubble discharging efficiency is improved, and therefore concrete bubbles are reduced.

The invention relates to a wheel hub motor, in particular to an anti-magnetic-pulling-force and anti-deformation axial end face motor, and solves the technical problem that a rotor structure of an existing axial magnetic flux motor cannot resist attraction force of a rotor permanent magnet to stator teeth, so that the rotor structure is deformed. The axial end face motor capable of resisting magnetic pulling force and preventing deformation comprises a motor shaft, a rotor assembly, a stator assembly and a magnetic suspension assembly. The magnetic suspension assembly comprises two magnetic ring seats, 2K movable magnetic rings, 2K static magnetic rings and a plurality of adjusting bolts, wherein K is greater than or equal to 1; the two magnetic ring seats are respectively arranged in the first rotor magnetic ring groove and the second rotor magnetic ring groove through adjusting bolts, and the adjusting lengths of the two magnetic ring seats along the axial direction are equal; 2K moving magnetic rings are equally divided into two groups and are respectively adsorbed on the end surfaces, facing the stator, of the two magnetic ring seats; 2K static magnetic rings are equally divided into two groups and are respectively arranged in the first stator magnetic ring groove and the second stator magnetic ring groove, and the magnetic poles of the opposite end surfaces of the static magnetic rings and the movable magnetic rings are the same to form an axial suspension state.

The application relates to a double-side coupling axial nutational magnetic speed reducer and a working method thereof. The speed reducer comprises a box, an input shaft is arranged at the left end of the box, a rotating disc is arranged at the right side in the box, a nutational disc is arranged in the box and rotates with the input shaft, first and second nutational magnetic gears are arranged at the left and right end faces of the nutational disc respectively, a fixed magnetic gear is arranged at the left end of the box and is magnetically coupled with the first nutational magnetic gear, and a movable magnetic gear is arranged at the left end face of the rotating disc and is magnetically coupled with the second nutational magnetic gear. The double-side coupling axial nutational magnetic speed reducer can realize few-pole difference, has simple structure, large transmission ratio and high transmission efficiency, the axial forces generated by the axial magnetic gears on the two sides can be effectively offset, the service life of bearings is prolonged, the axial force is small, and transmission is stable.

The invention discloses an electric mechanism with a controllable vertical position. The electric mechanism comprises a motor shell, a coil assembly and a rotor assembly. By means of the structure that the bottom of the magnetic conductive shell protrudes inwards, resetting can be achieved without using a spring, and controllable ascending, descending and hovering of the rotor are achieved by controlling the magnitude of direct current in the two sets of coils; a cylindrical or polygon prism structure is adopted, so that the utilization rate of the permanent magnets and the windings is improved, the magnetic leakage is reduced, and the integrity is improved; a moving magnet type rotor is adopted, so that the impact inertia of the rotor is increased, and the risk that a winding coil breaks down is reduced; the built-in permanent magnets are adopted, so that the use amount of the permanent magnets is reduced, and the manufacturing cost is reduced; the two winding coils with different turns are used, so that the position of the rotor can be controlled; the bottom of the magnetic conductive shell of the motor protrudes inwards by a circle, so that the motor can fall back and hover at an initial position when in no load, a spring does not need to be used for resetting, and the initial position can be adjusted by adjusting a circle of inner ring protruding from the bottom.

The embodiment of the utility model provides a moving magnet type mouse wheel mechanism, which comprises a bearing unit, a wheel and a magnetic conductive piece, the bearing unit is provided with a first mounting piece and at least one second mounting piece, the wheel is arranged on the first mounting piece and can rotate, a plurality of magnetic poles are radially and sequentially distributed on the circumference of the wheel, and the polarities of the adjacent magnetic poles are opposite to each other; the magnetic conductive part is arranged on the second installation part, the magnetic conductive part faces the rolling wheel and is separated from the rolling wheel by a certain distance, the magnetic conductive part faces the magnetic poles in a non-contact mode, the size of a body of the magnetic conductive part is smaller than the size of two adjacent magnetic poles, and when the rolling wheel rotates, intermittent strong and weak magnetic restoring force can be generated between the magnetic poles and the magnetic conductive part. The joint of two adjacent magnetic poles of the roller is located at the extending position of the center line of the magnetic conductive piece.

The invention relates to a novel moving magnet type electromagnetic MEMS micromirror and a manufacturing method thereof.The novel moving magnet type electromagnetic MEMS micromirror comprises a coil platform and a coil, a mirror surface structure comprises a mirror surface body and a magnet arranged on the upper surface of the mirror surface body, the magnet is arranged above the coil, and the mirror surface body comprises a frame and a mirror surface platform arranged in the frame; the mirror surface platform is connected with the inner wall of the frame through the rotating shaft; the magnet and the coil are used for driving the mirror surface platform to realize two-dimensional deflection; according to the MEMS electromagnetic micro-mirror, electromagnetic force is provided for deflection of the mirror surface through cooperation of the magnet and the coil, and the problems of low magnetic energy density, poor thermal stability and low durability caused by deposition of a magnetic film on the mirror surface of a traditional MEMS electromagnetic micro-mirror are solved. By integrating the Hall device, the problem of real-time measurement of the rotation angle of the mirror surface is solved. In addition, a high-quality large-size mirror surface is manufactured, the problems that a traditional fast reflecting mirror is large in mass and low in integration degree are solved, and the problems that fast reflecting mirrors in other MEMS driving modes are small in deflection angle and small in mirror surface size are solved.

A transfer conveyor system for a semiconductor inspecting apparatus using a moving magnet includes a carrier in which a semiconductor wafer or a substrate is seated and accommodated and which is transferred, an armature which is provided to be accommodated in a permanent magnet plate under the carrier, a stator which is disposed to be spaced apart from the armature, is fixedly installed on a guide rail, a sensor unit which is installed at each of two ends of each motor coil, detects whether the armature approaches, senses a variation of the magnetic field, and measures a position of the armature from speed information of the armature, and a carrier monitoring unit which is provided on the carrier and monitors the carrier to detect an abrasion degree, a damage state, or an alignment / misalignment of the carrier in real time.

The present invention provides an active motion capsule robot with a hybrid drive mode, comprising a head unit and a tail unit movably connected to the head unit, wherein the outer surface of the head unit is provided with a first thread groove, the outer surface of the tail unit is provided with a second thread groove, the head unit is provided with a moving magnet, the tail unit is provided with a rotating magnet, the rotating magnet can rotate relative to the tail unit, the moving magnet and the rotating magnet constitute a magnetic spring mechanism, and an external magnetic field is applied to the magnetic spring mechanism. The active motion capsule robot can realize spiral drive forward or peristaltic drive forward according to the strength of the applied external magnetic field. The beneficial effects of the present invention are as follows: the active motion capsule robot of the present invention has the characteristics of a hybrid drive mode, can realize spiral drive forward and peristaltic drive forward, and when in different parts of the gastrointestinal tract, adopts different drive modes to realize active motion of the hybrid drive mode, thereby improving the forward efficiency of the capsule robot in the gastrointestinal tract.

The invention provides an intraoperative dynamic positioning system and method based on a magnetic sensor array and a composite magnetic field, and the system comprises a composite excitation handle which is internally and non-coaxially integrated with a static magnetic source and a dynamic magnetic source, and generates a non-axisymmetric static and dynamic composite magnetic field; the self-adaptive sensing array is provided with a plurality of magnetic sensing nodes and is used for synchronously acquiring magnetic field signals; and the navigation processing terminal is used for processing the signal and resolving the pose. According to the method, static magnetic and dynamic magnetic components are obtained through synchronous acquisition and frequency domain decoupling; the method comprises the following steps: fitting the position and direction of a handle by utilizing a static magnetic component, and solving a rotation angle around a shaft by taking the position and direction as initial values and combining a dynamic magnetic component to realize full six-degree-of-freedom positioning; and finally, obtaining the navigation pose of the instrument tip through filtering mapping. According to the invention, full-attitude, high-precision and strong-interference-resistance intraoperative dynamic positioning is realized, and the problems of precision degradation and visual lag of traditional electromagnetic positioning in a metal environment are solved.

The invention discloses a direct-acting electromagnetic valve, and belongs to the technical field of vehicle suspension systems. The electromagnetic valve comprises a valve body assembly, a static magnetic assembly, a valve seat assembly, a movable magnetic assembly and an electromagnetic driving assembly. The key point is that a damping limiting structure is arranged between the peripheral side of the moving magnetic assembly and the inner wall of the valve body assembly. When the electromagnetic valve is powered on and opened, and the movable magnetic assembly moves to the maximum opening position, the damping limiting structure bears the impact force and limits the displacement of the movable magnetic assembly, so that a preset magnetic isolation gap is always kept between the second end of the movable magnetic assembly and the static magnetic assembly. Through non-contact limiting, metal impact noise is eliminated; by means of the constant magnetic isolation gap, long-term stability of electromagnetic force is guaranteed, and the problems that in the prior art, noise is large, the electromagnetic force is attenuated, sealing is poor, and the stroke is not stable are systematically solved.

The invention relates to the technical field of planar motors, in particular to a stator unit for a moving magnetic planar magnetic suspension motor and the motor. The stator unit comprises a plurality of basic units, the first coil unit, the second coil unit and the position sensor unit in each basic unit form an n * n square matrix, and n is an integer greater than 1; the first coil units and the position sensor units on any odd-numbered rows or odd-numbered columns of the n * n square matrix are alternately arranged; the position sensor units and the second coil units are alternately arranged on any even-numbered rows or even-numbered columns of the n * n square matrix, and the coil direction of the first coil units is perpendicular to the coil direction of the second coil units. The motor comprises the stator unit, and the stator unit and the motor break through the constraint of a traditional cable, replace a laser interferometer scheme of a traditional moving-magnet planar motor, and simultaneously support the pose measurement of a plurality of rotors in a single oversized working plane.

The invention discloses an intelligent bracelet structure convenient to adjust and wear and a use method thereof.The intelligent bracelet structure comprises a dial plate body, a rubber sleeve is arranged on the outer side of the dial plate body, a through hole is formed in the side wall of the rubber sleeve, a second extension plate is arranged on the periphery of the top end of the rubber sleeve, and four insertion grooves are symmetrically formed in the two sides of the rubber sleeve; and four limiting holes are symmetrically formed in the other two side walls of the rubber sleeve. The beneficial effects are that through the design of the rubber sleeve, the extension plate II, the slot, the limiting hole and the limiting column, the periphery of the dial plate body can be surrounded, the rubber sleeve can be designed into various colors, and the attractiveness of the dial plate body is ensured under the condition that the periphery of the dial plate body is prevented from being collided and worn; and through cooperation with surrounding of a stainless steel woven belt on a second mounting column, a forward moving magnet on a guide plate can be attracted to the stainless steel woven belt, by adjusting the attraction position of a powerful magnet, the device can rapidly adjust the size of the bracelet, and rapid wearing or taking off is facilitated.

The invention relates to a moving magnet type motor. The present invention provides a moving magnet type motor comprising: a fixed voice coil coupled to a frame; a moving magnet assembly movably coupled to the frame and operable to move relative to the fixed coil, the moving magnet assembly including a magnet and a flux concentrating member, the magnet and the flux concentrating member defining a gap within which the fixed coil is positioned; and an actuation surface coupled to the moving magnet assembly, and wherein movement of the moving magnet assembly drives movement of the actuation surface along a translating axis.

A magnetic levitation centrifugal pump, including a volute, stator magnetic ring and a rotor; the volute has a levitation cavity, a medium inlet and a medium outlet, the rotor is located inside the levitation cavity, the stator magnetic ring are fixed to the volute, and the rotor includes a rotor body and dynamic magnetic ring located on the rotor body; the dynamic magnetic ring and the stator magnetic ring are coaxial with each other and are nested, to limit the radial positions of the rotor body and the volute; magnet steel assemblies are further fixed at the rotor body, each magnet steel assembly includes N first magnet steels arranged along the circumferential direction, and magnetic poles of all the first magnet steels are arranged in a staggered manner; two ends of the volute are also encapsulated with driving coil assemblies.

The utility model relates to the technical field of faucets, in particular to a bathtub faucet assembly which comprises a faucet body, a pipe body, a column block, a movable rod, a floating block, a movable magnet ring and a fixed magnet ring, the top end of the pipe body is communicated with the interior of the faucet body, a through hole is formed in the side face of the bottom of the pipe body, the column block is located in the pipe body, and a clamping block is formed at the bottom of the column block. A limiting cavity capable of being matched with the column block is formed in the faucet body, the movable rods are located on the left side and the right side in the pipe body, the middles of the movable rods are hinged to the pipe body and can rotate, clamping blocks are formed at the top ends of the movable rods and can clamp the clamping blocks, and the floating block is located in the pipe body and can move. The fixed magnet ring is fixedly installed in the pipe body and repels the movable magnet ring, the floating block capable of changing along with the water level of the bathtub is arranged in the pipe body, the column block and the limiting cavity are matched based on feedback of the floating block to the water level so that water flow can be cut off, and the problem that after the bathtub is full of water, the faucet still continuously discharges water, and consequently water resources are wasted is solved.

The application relates to the technical field of generator testing, in particular to a dynamic-magnetic linear generator mutual-load pneumatic coupling test method, which obtains performance parameters of a to-be-tested motor through a pneumatic coupling mode, omits an intermediate transmission mechanism, and can jointly adjust a test frequency through inflation pressure and a variable-frequency driver, can adjust the oscillation stroke ratio of two motor movers through the area ratio of coupling pistons, can truly simulate the working condition of a linear motor in a free-piston Stirling generator, and can obtain more sufficient test data; in addition, the two linear motors are arranged to form a symmetrical structure test platform, and through transformation of a driving motor and the to-be-tested motor, the test data can be compared, so that the consistency of a prototype development and production can be verified.

This utility model belongs to the field of linear motor assembly technology, specifically relating to an auxiliary device for installing the stator of a moving magnet linear motor. It includes a linear motor, a support mechanism, and an adjustment mechanism. The linear motor includes a motor base, a motor top cover, a lower coil stator, a guide rail, a magnet mover, and an upper coil stator. The motor top cover is connected to the motor base, and the upper coil stator is installed at the bottom of the motor top cover. The lower coil stator is installed inside the motor base, and the guide rail is installed on top of the motor base. The magnet mover is positioned between the upper and lower coil stators and cooperates with the guide rail. An adjustment mechanism is installed on the support mechanism and connected to the motor top cover. The adjustment mechanism moves in conjunction with the support mechanism to adjust the distance between the upper coil stator and the magnet mover. The adjustment mechanism is used to adjust the position of the upper coil stator in the horizontal plane to achieve the installation of the linear motor. This utility model can prevent magnet collision and damage during installation, ensuring installation accuracy.

The utility model provides a quick disc frock of loading of card belongs to frock clamp technical field, the utility model provides a quick disc frock of loading of card, including disc body, the upper end surface of disc body is adsorption surface, and the adsorption surface is used to place work piece, and the inside of disc body is equipped with magnetic attraction device and rotating roller, and the magnetic attraction device includes fixed magnet group and moving magnet group, and fixed magnet group is fixed in disc body, and moving magnet group is equipped on the moving plate in disc body, and one side of moving plate is equipped with rack, and rotating roller is equipped with tooth, and tooth is engaged with rack, and rotating roller is provided with the jack, is used for inserting the plug post to rotate rotating roller, when needing to adsorb work piece, first, work piece is placed to adsorption surface, after through inserting the plug post into the jack, rotates the plug post, can rotate rotating roller, can control moving plate to shift, adsorb work piece to adsorption surface, after processing, reverse plug post, moving plate resets, no longer adsorbs work piece.

The three-degree-of-freedom micro-vibration isolator with stiffness and damping adaptive cooperative regulation belongs to the technical field of precision vibration isolation, and can realize three-degree-of-freedom near full-band vibration isolation performance under variable load. It comprises an upper plate, a base plate and three sets of low-frequency vibration isolation dampers connected between the upper plate and the base plate; the negative stiffness damping regulator in the low-frequency vibration isolation damper utilizes a multi-layer axial array of equal-section magnetic ring arrays with vertical magnetization between adjacent layers to construct a single-side high magnetic density excitation magnetic field, and coaxially nests the vertical magnetization permanent magnet ring array and the moving magnet ring array to generate high negative stiffness characteristics, and coaxially nests the coil to generate high damping characteristics; by real-time sensing the changes of the vibration isolation load mass or the excitation frequency, the size of the current in the energized coil is adjusted to generate a precisely controllable excitation magnetic flux, match the negative stiffness and damping requirements of near full-band vibration isolation, and achieve multi-directional, near full-band and high-performance vibration isolation effect.

The utility model relates to a rigidity-adjustable composite air spring, which belongs to the technical field of air springs, and comprises a sealing ring, a sealing bearing, an anti-collision rubber pad, an upper electrified coil, a support piston rod, a cylinder barrel, an annular permanent magnet, a locking nut, a lower electrified coil and a membrane type air spring, and the annular permanent magnet is mounted at the support piston rod through the locking nut. According to the air spring, the characteristic that the rigidity of the electromagnetic spring can be changed to be positive and negative is utilized, so that the total rigidity of the air spring which is connected in parallel is reduced to be nearly zero under low frequency and small displacement, the effect of filtering low frequency vibration is achieved, the total rigidity is further improved under large displacement, the effect of improving the bearing capacity is achieved, and the service life of the air spring is prolonged. And compared with an existing electromagnetic composite air spring, the movable magnet does not penetrate through the interior of the static magnet, it is guaranteed that the size of the movable magnet can be as large as possible, and therefore the rigidity of the electromagnetic spring has a larger adjusting range.

The utility model discloses a contourgraph measuring rod balancing structure, relates to the field of contourgraphs, and adopts the technical scheme that the contourgraph measuring rod balancing structure comprises a measuring rod body and a measuring rod frame; the middle part of the measuring rod body is hinged with the measuring rod frame, and the rear end of the measuring rod body is provided with a static magnet; a first movable magnet and a second movable magnet are respectively arranged on the upper side and the lower side, corresponding to the static magnet, of the measuring rod frame; the first movable magnet and the second movable magnet are respectively arranged in a manner of repelling the corresponding surfaces of the static magnet; the first moving magnet and the second moving magnet can move close to or away from the static magnet. The measuring rod body can keep magnetic force to achieve balance well, interference of external force is reduced, contour detection of the measuring rod is facilitated, and balance adjustment is more convenient and simpler.

The application relates to a mechanism for outputting energy generated by magnetic interaction, which comprises a shell, a fixed magnet fixed in the shell, a moving assembly arranged in the shell, a magnetic pole direction adjusting assembly installed on the moving assembly, and a moving magnet installed on the magnetic pole direction adjusting assembly; the magnetic pole direction adjusting assembly is used for adjusting the directions of two poles of the moving magnet during movement of the moving magnet; the moving magnet cooperates with the fixed magnet and is used for driving the moving assembly to reciprocate along the length direction of the two poles of the fixed magnet on the side of the fixed magnet which is not in the pole direction during the process of repelling between the same poles and attracting between different poles. The mechanism for outputting energy generated by magnetic interaction can reduce energy loss of magnetic force doing negative work by timely adjusting the pole direction of the moving magnet during interaction between the moving magnet and the fixed magnet, so that the magnetic interaction can fully accumulate energy and then the energy can be output.

The application discloses a flexible membrane moving-magnetic driving type blood pump, which comprises a pump shell, a moving-magnetic driving device and a wave transmission assembly arranged in the pump shell, wherein the moving-magnetic driving device comprises a stator assembly and a rotor assembly; the wave transmission assembly comprises a flow channel component forming a wave transmission flow channel, and a flexible membrane arranged in the wave transmission flow channel is connected with the rotor assembly through a rigid diaphragm, so that the rotor assembly drives the flexible membrane to vibrate in the wave transmission flow channel under the electromagnetic driving effect of the stator assembly, and the flexible membrane generates a wave motion, thereby making the blood flowing into the pump shell and the flow channel component to have a wave pumping effect with physiological characteristics. The application realizes the wave transmission of the blood, makes the blood flow have the pulsation physiological characteristics, is stable and reliable in operation, is not prone to faults, is low in cost and is suitable for promotion.