124 results about "Halbach array" patented technology

The invention relates to the technical field of magnets, and particularly discloses a robot joint motor rotor multi-magnet magnetizing type magnet ring assembly process, which comprises the following steps of: arranging a plurality of magnetic parts to form magnetic units in a Halbach array, sequentially sticking the arranged magnetic units to the inner side of a mold through a sticking layer, and meanwhile, placing a shell on a bearing mechanism; the side edge of the shell is preheated through the heating unit; then the multiple magnetic units with the molds are placed into a magnetic mounting unit according to the sequence of the permanent magnet rings to wait for mounting; in the assembling process, the magnetic units on the mold are sequentially installed in the limiting containing area of the shell through the magnetic installation unit, demolding is conducted after installation is completed, and then the permanent magnet ring and the shell are pressed tightly through the pressing mechanism to form the magnet ring. The magnetic field performance is improved through Halbach array arrangement, the assembling efficiency and the product consistency are improved through the whole process, and the rate of unqualified products is reduced.

A magnetic coupling mechanism in a downhole flow control tool comprising a first chamber within a flow path of wellbore fluids with a first component comprising a Halbach array of magnets. A second chamber isolated from the wellbore environment comprises a second component with a Halbach array of magnets. The first chamber and the second chamber are coupled with a nonmagnetic separation. The second component is translated with the first component by a strong magnetic flux produced by the array of magnets.

The application relates to a modular magnetic reconfiguration parallel robot joint system for on-orbit autonomous assembly of a spacecraft, and belongs to the technical field of space equipment. The system is aimed at solving the problems of poor flexibility, low reconfiguration efficiency, difficulty in balancing high precision and high stiffness, and low reliability of existing space parallel robots. The technical scheme comprises a Halbach array magnetic ball and an electromagnetic locking ring of a magnetic joint module, a carbon fiber telescopic connecting rod micro servo motor and a harmonic reducer of a distributed drive branch chain, a multi-sensor data fusion unit configuration optimization algorithm module and a real-time control unit of an intelligent control system. The system can realize rapid joint mode switching, improve task response and execution efficiency, autonomously switch between precision mode and high stiffness mode to meet different operation scene requirements, adopt non-contact magnetic transmission to avoid friction and wear and pollution, improve system service life and reliability, and realize modular design for convenient maintenance and upgrading.

An electric machine, in particular a motor or a generator, comprising a rotor and a stator, wherein the rotor comprises a planar, ring-shaped rotor base element and the stator comprises a planar ring-shaped stator base element, wherein the rotor base element and the stator base element are aligned along an axial axis (Z) of the electric machine, wherein a plurality of magnet elements are arranged around the circumference of the ring-shaped rotor base element forming a Halbach magnet-ring assembly, wherein the Halbach magnet-ring assembly generates a magnetic field (BR) with axial and azimuthal components, wherein a plurality of coils are arranged around the circumference (C) of the ring-shaped stator base element.

The invention discloses a transmitting coil structure based on a Halbach array and a switching control circuit thereof, which are applied to a dynamic wireless charging system of an unmanned aerial vehicle. When the unmanned aerial vehicle travels in the charging channel, the relative displacement between the transmitting coil and the receiving coil can cause the change of the coupling coefficient between the coils, and the charging of the unmanned aerial vehicle is unstable, so that the device has a relatively high anti-offset characteristic, the change of the coupling coefficient can be weakened, and the charging stability of the unmanned aerial vehicle is improved. And the cooperative control method is utilized to reduce the mutual influence between the stacked coils, so that the unmanned aerial vehicle can be stably charged in the driving process. And secondly, the characteristics of the Halbach array are reasonably utilized, the magnetic field intensity of the receiving coil side can be enhanced by adopting the coil arrangement mode of the Halbach array, meanwhile, the leakage magnetic flux of the transmitting coil is reduced, and the energy transfer efficiency of the dynamic wireless charging system is effectively improved.

This invention discloses a monotonic magnetic ring dual-rotor radial-axis composite modulation magnetic gear. The magnetic gear includes an inner rotor yoke, an inner rotor permanent magnet, a tuning ring, an outer rotor permanent magnet, and an outer rotor yoke. The inner rotor yoke and the inner rotor permanent magnet constitute the inner rotor, and the outer rotor permanent magnet and the outer rotor yoke constitute the outer rotor. The inner and outer rotors are coaxially arranged to form a dual-rotor structure, capable of relative rotation. The tuning ring, a single tuning structure, is positioned between the inner and outer rotors to simultaneously achieve radial modulation and axial differential modulation, thus forming a radial-axis dual-modulation magnetic gear. Both the inner and outer rotor permanent magnets employ an asymmetric Halbach array structure. This application achieves radial modulation and differential modulation, constructing a radial-axis coupled dual-modulation magnetic field structure, improving magnetic field utilization and torque transmission capability.

One embodiment may include a method for mounting magnets: assembling (S10) an arrangement device (120) and an alignment device (110), wherein the alignment device (110) has a cylindrical shape with a rotation axis (c), placing (S20) a plurality of guide pins (131) in a placement recess (121) formed between the alignment device (110) and the arrangement device (120), wherein the plurality of guide pins (131) form a pin structure (130), placing (S20) a plurality of magnets (20) at first mounting spaces (P1) between the plurality of guide pins (131) in the placement recess (121), removing the plurality of guide pins (131) from the placement recess (121), wherein second mounting spaces (P2) are provided, placing (S40) circumferential magnets (20a) at the second assembly rooms (P2),Pressing (S50) the upper ends of the majority of magnets (20) and the circumferential magnets (20a) to align all array magnets according to a specific height, curing (S60) a bonding material (40) between the aligned array magnets, and releasing (S60) the alignment device (110) from the array magnets.

The invention relates to a magnetic type draught fan tower outer wall defect integrated treatment wall-climbing robot and an operation method thereof.The magnetic type draught fan tower outer wall defect integrated treatment wall-climbing robot comprises a vehicle shell, the top of the vehicle shell is connected with a defect treatment mechanism through a six-degree-of-freedom mechanical arm, a magnetic adsorption module is arranged at the bottom of the vehicle shell, and the vehicle shell is in magnetic adsorption fit with the wall face of a tower through the magnetic adsorption module; a passive flexible mechanism and a walking driving mechanism are fixedly installed on the vehicle shell and are in transmission connection with walking wheels used for walking on the wall face together. A composite structure of the Halbach array, the multi-deformation magnetic unit and the conical pole shoe is innovatively adopted, a magnetic field is superimposed through 90-degree gradient magnetizing, the adsorption force is improved by 50% compared with a traditional adsorption force, the adsorption force is matched with the curved surface of a tower drum, and heavy-load stable walking is guaranteed; and meanwhile, the six-axis flexible mechanical arm is integrated with a detection, grinding and spraying integrated module, layout is simplified, the load is reduced, the high-altitude movement risk is avoided, and operation flexibility and safety are both considered.

The invention discloses a dual three-phase asymmetric Halbach array permanent magnet fault-tolerant motor, and belongs to the field of permanent magnet motor design. The stator comprises a stator core, double three-phase centralized windings, armature teeth and fault-tolerant teeth. The rotor comprises a rotor iron core, asymmetric Halbach array permanent magnets and magnetic barriers, the semi-open magnetic barriers with openings facing the air gap side are arranged on the outer circumference of the rotor iron core, and the asymmetric Halbach array permanent magnets are arranged on the iron core in the circumferential direction. The tangential magnetized short permanent magnet is arranged in the magnetic barrier semi-open slot, and the tangential magnetized long permanent magnet extends to the bottom of the magnetic barrier from the magnetic barrier semi-open slot and is partially embedded in the magnetic barrier in the form; and two adjacent magnetic barriers are isolated by a magnetic isolation bridge. The leakage flux path is subjected to shunting regulation and control, so that the end leakage flux of the permanent magnet is reduced, and the effective flux utilization rate and the torque density of the air gap are improved; according to the invention, high torque density and low magnetic flux leakage are considered, the continuous output capability of the motor under a single-phase / multi-phase fault condition is enhanced, and a driving scene with a high reliability requirement is satisfied.

The application relates to the technical field of Halbach array magnet, and particularly discloses a manufacturing method of a Halbach array magnet assembly, which comprises the following steps: 1) preliminarily processing a blank material to obtain a permanent magnet blank with a thickness not greater than 1.5 mm and a length-diameter ratio greater than 20; 2) performing Halbach array arrangement, marking a fitting surface and a non-fitting surface on the permanent magnet blank; 3) coating an adhesive layer on the fitting surface and an anti-oxidation layer on the non-fitting surface, fitting the fitting surface, and performing diffusion connection treatment under vacuum pressure to obtain an assembly product after heat treatment; 4) performing secondary processing to meet the size requirement of a target Halbach array, and forming a Halbach array magnet assembly semi-finished product; 5) performing surface processing treatment; and 6) performing integrated magnetization according to an orientation direction to obtain the Halbach array magnet assembly. According to the application, the single-piece magnet with a thickness not greater than 1.5 mm and a length-diameter ratio greater than 20 can be uniformly and densely fitted and is not prone to deformation in the process of manufacturing the Halbach array magnet assembly.

The utility model discloses an inclined magnetizing gyromagnetic assembly, which belongs to the technical field of magnetic therapy equipment and comprises two main magnetic poles, the two main magnetic poles are oppositely connected in series in an N-S pole mode, an included angle alpha is formed between the N-S pole magnetizing direction of the main magnetic poles and the horizontal plane, alpha is larger than 5 degrees and smaller than 85 degrees, and preferably, the inclined magnetizing gyromagnetic assembly further comprises two identical auxiliary magnetic pole sets. Each auxiliary magnetic pole group is composed of three auxiliary magnetic poles, namely an auxiliary magnetic pole A and two auxiliary magnetic poles B, the two auxiliary magnetic poles B clamp the auxiliary magnetic pole A to form a Halbach array combination, the magnetizing directions of the auxiliary magnetic poles A and the auxiliary magnetic poles B are perpendicular to each other, and the two auxiliary magnetic pole groups are tightly attached to the side edge of the main magnetic pole; under the condition that the magnetic material with the same volume as the prior art is adopted, the penetration depth of the magnetic material is more than 1.5 times that of the prior art, the surface magnetism is improved to more than 12000 gauss from 9000 gauss in the prior art, and the magnetic therapy effect can be remarkably improved when the magnetic material is used for a gyromagnetic therapeutic instrument.

Two push rod type linear stepping motors in the device are arranged at the two ends of a guide rail through L-shaped push rods, carrying tables are arranged above the L-shaped push rods, telescopic rotating motors are arranged on the carrying tables respectively, the telescopic rotating motors are vertically connected with magnet plates, and the magnet plates are arranged on the carrying tables. A third telescopic rotating motor is arranged at the rear end of one magnet plate, a vertical guide rail groove and a transverse guide rail groove are formed in one magnet plate, and the control module is connected with all the motors. According to the invention, the high gradient magnetic field advantage of the panel Halbach array is utilized, the precise control capability of the motor is combined, the automatic uniform field and gradient field conversion function of the device is utilized, and a microscope with an image acquisition function is matched, so that the degree of phagocytosis of magnetic particles by cells is automatically observed, and multiple sets of magnetic field devices do not need to be additionally arranged; the cell activity can be effectively protected, and the magnetic field application requirements in the fields of biomedical detection, analysis detection and the like are met.

The invention provides an optimization method and system for a magnetic adsorption movement mechanism of a steel structure inspection robot, and relates to the technical field of magnetic adsorption movement mechanisms and optimization design of the magnetic adsorption movement mechanisms. Establishing a finite element simulation model of the magnetic adsorption movement mechanism based on the Halbach array, and obtaining a design variable set; constructing a finite element agent model, introducing auxiliary features, inputting the auxiliary features and the high-quality design variable set as numerical features into the finite element agent model, reasoning by adopting a loss function containing a safety boundary penalty term, and outputting to obtain a prediction result of the magnetic adsorption force and gravity of the magnetic adsorption movement mechanism; a GA-DE hybrid optimization algorithm based on adaptive subgroup proportional adjustment and a constraint annealing mechanism is adopted, the magnetic mass ratio of the magnetic adsorption movement mechanism is maximized on the premise that mechanical constraints are met, and optimal structural design variables meeting constraint conditions are output. Performance maximization of the magnetic adsorption movement mechanism is achieved on the premise that safe adsorption is guaranteed.

The invention belongs to the technical field of Halbach magnet assembling, and particularly relates to a Halbach array magnet assembling device and method.The assembling device comprises a bottom plate, a magnet assembly, a gluing assembly, a spacing assembly and a fixing assembly, and the magnet assembly comprises a back plate, a first magnet, a second magnet and a third magnet; the gluing assembly comprises a first gluing frame, a second gluing frame and a third gluing frame which are respectively used for gluing the back plate, so that a first magnet, a second magnet and a third magnet are adhered to the back plate; the spacing assembly is used for isolating the first magnet, the second magnet and the third magnet from the back plate respectively; the fixing assembly is mounted on the bottom plate, is used for mounting a second magnet and a third magnet on the back plate and is connected with the first magnet; and a first magnet, a second magnet and a third magnet are sequentially assembled on the back plate through the gluing assembly, the spacing assembly and the fixing assembly to form the magnet assembly.

The application relates to the technical field of magnetic suspension track optimization, and discloses a magnetic suspension track structure optimization method and application, which comprises the following steps: (A) analyzing the force conditions of a vehicle-mounted magnet and a magnetic track magnet, and establishing a mechanical expression of a magnetic suspension force; the structure of the magnet is a Halbach array; (B) adopting a quantitative analysis method and / or a coupling optimization method to analyze and obtain the numerical value of w when the maximum value is taken; or the numerical value of z when the maximum value is taken; or the numerical value of y when the maximum value is taken; or the numerical value of d when the maximum value is taken; the numerical values of w, z, y and d obtained are optimization values. The method can optimize the permanent magnetic suspension track structure size, improve the suspension efficiency of rare earth permanent magnet materials, and thus reduce the suspension cost of the permanent magnetic suspension or superconducting magnetic suspension.

This application discloses an electronic device, relating to the field of electronic products. The electronic device includes: a first device body and a second device body, the first device body and the second device body being rotatably connected to allow the electronic device to switch between an unfolded state and a folded state; a first magnetic component is disposed within the first device body, and a second magnetic component is disposed within the second device body, wherein the first magnetic component includes a plurality of first magnetic elements, the plurality of first magnetic elements being distributed along a first direction to form a first Helbeck array magnet; the second magnetic component includes second magnetic elements; when the electronic device is in the folded state, the first magnetic elements and the second magnetic elements are arranged opposite each other along a second direction, the second direction being perpendicular to the first direction. This application can solve the problem that displays are easily damaged or even shattered by metallic foreign objects.

The invention discloses a three-dimensional force tactile representation method and system based on planar Halbach array magnetic moment vector regulation and control. A planar array electromagnet is excited to generate a three-dimensional controllable electromagnetic field, excitation current of the planar array electromagnet is adjusted, and electromagnetic acting force borne by a fingertip magnet module is regulated and controlled; using a finite element simulation method to calculate and obtain electromagnetic force simulation discrete data when the fingertip magnet module is located at discrete grid points of the real operation space; analyzing data to design a control strategy, namely determining excitation current of each coil of the planar Halbach array electromagnet according to the relative position and expected stress of a fingertip magnet module in an operation space so as to realize force feedback in a three-dimensional space; according to the three-dimensional force tactile representation method, a planar Halbach array magnetic moment vector regulation and control method is innovatively proposed to regulate the electromagnetic field of each position in a real operation space, and three-dimensional force tactile feedback capable of precisely regulating and controlling the magnitude and direction of feedback force in a large range is realized in combination with a fingertip magnet module.

The application provides an electromagnetic rotary energy harvesting device and method based on a double-layer Halbach array, which comprises coaxially arranged rotor and stator assemblies, the rotor assembly is fixed to the shaft end of a rotating machine and rotates synchronously with the shaft end of the rotating machine, the coils of the annular coil assembly are symmetrically distributed according to a three-phase winding and are connected in Y shape, the magnet housing of the stator assembly is provided with magnets and counterweights, the magnets comprise inner and outer ring magnets, the double-layer concentric cylindrical Halbach array is formed by the inner and outer ring magnets, the inner and outer ring magnets are arranged in the coil assembly and are magnetized in a radially staggered manner, the counterweights balance the electromagnetic torque by gravity torque, and the relative rotation of the rotor and stator assemblies is ensured. The double-layer Halbach array is used to concentrate the magnetism of the magnets to the middle annular air gap area, the kinetic energy-electric energy conversion is realized by combining electromagnetic induction, the magnetic stabilization and voltage stabilization are realized by adjusting the arrangement angle of the magnets, and the relative movement of the magnets and the coils is realized without additional fixation of the magnets of the stator assembly by relying on the single pendulum structure of the counterweights.

The present invention provides an embedded magnet rotor with a pseudo-Halbach array that is easier to manufacture than conventional designs while suppressing torque reduction. [Solution] An embedded magnet rotor has multiple magnetic poles formed in the circumferential direction of an iron core, and each of the magnetic poles has a magnet arranged thereon, which consists of a first rectangular section and a second rectangular section connected by a bent section. The first rectangular section is arranged on the iron core along a direction perpendicular to the d-axis of the magnetic pole center, and the second rectangular section is arranged in pairs on the iron core for each magnetic pole along the q-axis which is perpendicular to the d-axis in terms of electrical angle. The magnetic poles have a first pattern in which the magnetization orientation of the first rectangular section and the second rectangular section are outward, and a second pattern in which the magnetization orientation of the first rectangular section and the second rectangular section are inward. The magnetic poles of the first pattern and the magnetic poles of the second pattern are arranged alternately in the circumferential direction. The second rectangular section of a first pattern magnetic pole and the second rectangular section of a second pattern magnetic pole that are adjacent in the circumferential direction are arranged back to back along the q-axis.

The present invention relates to an assembly device for a Halbach magnet and a manufacturing method thereof and, more specifically, to an assembly device and a manufacturing method using same, wherein the assembly device for a Halbach magnet includes a through-hole in which magnets coated with an adhesive are inserted and stacked to facilitate assembly of the Halbach magnet, which is difficult to assemble due to repulsive force between adjacent magnets, and the stacked magnets are bonded in a Halbach array to form and discharge the Halbach magnet.

The utility model discloses a column-free magnetic cell sorting device which comprises a magnetic sorting mechanism, bases and moving mechanisms, the bases and the moving mechanisms are positioned on two sides of the magnetic sorting mechanism, each base is provided with one moving mechanism, the magnetic sorting mechanism comprises a supporting component, a magnetic component and a metal sleeve, and the magnetic component is fixedly arranged in the metal sleeve; a magnet structure of the magnetic assembly is a Halbach array, the top surface of the supporting assembly is used for placing a storage container in which a sample solution is stored, the supporting assembly comprises a base plate and a metal plate, a through hole penetrating through the length direction of the base plate is formed in the base plate, and the metal plate is accommodated in the through hole; the moving mechanism is used for pushing the metal plate to move in the length direction of the through hole. The column-free magnetic cell sorting device disclosed by the utility model can be used for effectively and controllably activating and shielding a magnetic field, and ensuring that an invalid magnetic field is weakened and the magnetic field intensity of a sorting area is enhanced in a working state, so that the magnetic cell sorting effect is improved.

The invention discloses a radial-transverse hybrid magnetic flux permanent magnet synchronous motor, belongs to the field of permanent magnet synchronous motor design, and aims to solve the problems of long magnetic circuit, large magnetic resistance and low power factor of an existing transverse magnetic flux motor. The disc-type motor comprises a disc-type rotor and a stator assembly formed by circumferentially splicing a plurality of independent stator units. The disc-type rotor is provided with two groups of permanent magnets which are axially magnetized and radially magnetized, and the two groups of permanent magnets are respectively positioned on the end surfaces of two sides and the surface of the outer circumference of the rotor and preferably form a Halbach array. A stator unit adopts an E-shaped stator core, three teeth of the E-shaped stator core are aligned with a rotor permanent magnet in the circumferential direction, and axial and radial air gaps are formed respectively, so that a radial main magnetic circuit and a transverse main magnetic circuit which work cooperatively are constructed at the same time. The motor is suitable for an electric vehicle driving system, a high-precision industrial servo, a wind generating set and other high-performance electrical transmission fields with strict requirements on power density, operation reliability and fault-tolerant capability.

[Problem] To provide a lens driving apparatus that is compact and capable of suppressing degradation of optical and video performance. [Solution] The lens driving apparatus includes at least one lens, a lens barrel that holds the lens, and N (N is an integer of 2 or more) linear motors in the lens barrel, each of which is composed of a first coil and a second coil that generate a driving force in a direction parallel to an optical axis of the lens and a magnet assembly that forms a Halbach array. At least one of the first coil and the second coil is provided with a curved portion. The linear motors are arranged at intervals of 360 / N degrees in a circumferential direction around the optical axis of the lens.

The utility model belongs to the technical field of welding, and discloses a wall-climbing welding robot which comprises a chassis, a driving assembly, a mechanical arm and a welding assembly, the driving assembly is installed at the bottom of the chassis, the mechanical arm is installed on the chassis, the welding assembly is installed at the end of the mechanical arm, and the driving assembly comprises a support, an AGV motor, advancing wheels, a servo motor, magnetic attraction wheels and a synchronous belt. The two advancing wheels are installed at the two ends of the support in parallel, the two AGV motors are installed on the side wall of one side of the support and connected with the opposite advancing wheels, the synchronous wheel is hollow, the magnetic attraction wheel is rotatably installed on the inner side of the hollow advancing wheel, and the servo motor is installed on the support and connected with the magnetic attraction wheel through the synchronous belt. The independent hollow driving wheel is driven by the AGV motor, and a plurality of permanent magnets distributed in a Halbach array are mounted on the magnetic attraction wheel in a matched manner, so that the magnetic attraction force is ensured, the weight of the welding robot is reduced, and the load capacity and adaptability of the welding robot are improved.

The utility model relates to a magnetizing structure based on a Halbach array and a motor, the magnetizing structure comprises a plurality of magnetic steel groups, each magnetic steel group comprises a main magnetic steel and at least two auxiliary magnetic steels arranged at two sides of the main magnetic steel, the length of the main magnetic steel is greater than that of the auxiliary magnetic steels in the magnetizing direction of the main magnetic steel, and the length of the auxiliary magnetic steels is greater than that of the main magnetic steel. The magnetizing directions of the main magnetic steel and the auxiliary magnetic steel are both in the radial direction and are arranged in different directions. Thus, the magnetizing structure comprises the plurality of magnetic steel groups, each magnetic steel group comprises the main magnetic steel and the at least two auxiliary magnetic steel arranged on the two sides of the main magnetic steel, the length of the main magnetic steel is larger than that of the auxiliary magnetic steel, and the magnetizing directions of the main magnetic steel and the auxiliary magnetic steel are different, so that aggregation and divergence of a magnetic field can be facilitated, pulsation of the torque of the motor can be restrained, and the reliability of the motor is improved. The stability of the motor is improved.

The application relates to the technical field of magnetic suspension driving and discloses a single-side oblique thrust repulsion magnetic suspension dynamic device based on a Halbach array, which comprises a magnetic field generating module and a magnetic field responding module which are oppositely arranged and form a magnetic suspension working gap, and the two form a magnetic repulsion relationship of same polarity in the magnetic suspension working gap. A Halbach array group is composed of at least three magnetic units, each magnetic unit is arranged according to a phase progressive magnetization angle sequence, and under the premise of keeping the relative phase progressive relationship unchanged, the whole is integrally superposed with a bias rotation angle and / or adopts a non-uniform and asymmetric geometric size distribution, so that a single-side enhanced magnetic field distribution is formed on a working side, a back-to-back closed magnetic field distribution is formed on a back side, and an inclined synthetic magnetic pressure distribution is formed in the magnetic suspension working gap; the synthetic magnetic pressure distribution is decomposed into a normal suspension force component and a tangential driving force component, so as to realize non-contact support and intrinsic oblique thrust output. The device is suitable for linear, annular and curved surface topological expansion.

The invention discloses a torque ripple optimization-oriented Halbach array magnet pole arc modification structure, which is characterized in that an adjustable curvilinear function is introduced to the edge of a Halbach magnet pole arc, the magnet pole arc adopts a cosine pole arc modification structure injected with higher harmonics, and the inner side of a magnet is a rotating shaft part; the Halbach magnet array comprises a plurality of permanent magnets PMA adopting a radial magnetizing mode and a plurality of permanent magnets PMB adopting a parallel magnetizing mode, and the plurality of permanent magnets PMA and PMB are alternately arranged and distributed along the circumference. According to the invention, the torque ripple of the motor can be effectively suppressed, and meanwhile, the loss of the output torque is reduced to the minimum; the advantages of high power density and high efficiency of the Halbach motor are maintained, and torque ripple is effectively reduced.

The invention relates to the technical field of mortar pump motors, in particular to a double-rotor axial magnetic flux motor system for a mortar pump, which comprises a shell assembly fixedly connected with the mortar pump, and a motor mounting cavity is formed in the shell assembly; the stator assembly comprises a stator iron core and a multi-phase concentrated winding, and the multi-phase concentrated winding is wound on the stator iron core; the double-rotor assembly comprises a first permanent magnet rotor, a second permanent magnet rotor and an output shaft, the first permanent magnet rotor and the second permanent magnet rotor are coaxially arranged on the two axial sides of the stator assembly respectively and are coaxially and fixedly connected through the output shaft, and permanent magnets in the first permanent magnet rotor and the second permanent magnet rotor are arranged in a Halbach array mode; and the cooling assembly comprises a micro-channel cooling plate and flow guide ribs, the micro-channel cooling plate is embedded in the stator assembly, and the flow guide ribs are arranged on one side of the first permanent magnet rotor and one side of the second permanent magnet rotor. By means of the double-rotor axial magnetic flux structure, energy conservation and consumption reduction are remarkably achieved, the device can adapt to the load characteristic of the mortar pump, and it is ensured that equipment operates under the high-load working condition.

Provided is a cylindrical Halbach-type magnetic circuit that suppresses changes in the strength of the magnetic field generated in an internal space even when the temperature of a magnet changes.　A Halbach-type magnetic circuit 1 comprises: a permanent magnet assembly 2 that is a cylindrical Halbach array of a plurality of permanent magnet pieces 21–28 that experience a decrease in residual magnetic flux density with an increase in temperature; and a magnetic shunt alloy plate 3 that is opposite at least one axial-direction end surface of the permanent magnet assembly. The permanent magnet pieces may be rare earth permanent magnet pieces.

The invention discloses an intelligent positioning type AGV, and relates to the technical field of AGVs, the intelligent positioning type AGV comprises a carrying frame and at least one pair of split type cargo pressing piles, each split type cargo pressing pile is composed of a driving assembly, a pair of adjusting piles and a butt joint assembly, the driving assembly is installed on the carrying frame, the driving assembly controls the pair of adjusting piles to be opened and closed, and the butt joint assembly is installed on the carrying frame. The butt joint assembly is connected between the pair of adjusting piles, each adjusting pile comprises a four-bar mechanism and a lifting and retracting mechanism, the four-bar mechanisms are installed on the carrying frame, each lifting and retracting mechanism comprises a first driving part, a screw rod, a clamping groove shell and a tape winding box, the first driving parts and the clamping groove shells are connected with the four-bar mechanisms, and the screw rod is connected with the corresponding four-bar mechanism. The screw rod is connected with the first driving piece, the tape winding box is slidably installed in the clamping groove shell, the middle of the tape winding box is spirally connected with the screw rod, the magnets and the aluminum rings which are arranged in a Halbach array mode are arranged between the AGV and the bottom plate, and damping in the transportation process is achieved through electromagnetic induction.