158results about How to "Increase load" patented technology

The invention relates to the technical field of X-ray tube manufacturing, in particular to an X-ray tube shell, a manufacturing method and an X-ray tube, the X-ray tube shell comprises a shell used for containing an anode target disc, a heat dissipation layer is attached to the inner wall of the shell, and the heat dissipation layer at least surrounds the periphery of the anode target disc; the heat dissipation layer is of an interpenetrating network structure formed by compounding functional metal and diamond, and the material of the functional metal at least comprises one of molybdenum and tungsten. Based on the device, the shell can absorb thermal radiation energy by using the high absorption characteristic of molybdenum or tungsten in an infrared band, and can quickly conduct heat out by means of the high thermal conductivity of diamond, so that the heat dissipation efficiency of the shell is improved, and heat accumulation is effectively prevented.

The application relates to the technical field of catalysts, and discloses a limited type iodine-based homogeneous immobilized catalyst as well as a preparation method and application thereof. The catalyst comprises a carrier and iodine ions, magnesium ions and quaternary ammonium ions loaded on the carrier, wherein the molar ratio of the magnesium ions, the quaternary ammonium ions, the iodine ions and the carrier is 0.01-1:4-15:1-30:1. The limited type iodine-based homogeneous immobilized catalyst disclosed by the application enhances the electrostatic interaction between iodine ions and quaternary ammonium ions through the molecular sieve limiting effect to construct a limited type structure. The catalyst has significantly enhanced CO2 adsorption and activation capacity, can activate an epoxide compound, and accelerates the ring opening of the epoxide compound. In a cycloaddition reaction catalyzed by the catalyst under the conditions of no solvent and no auxiliary agent, the conversion rate of propylene oxide can reach more than 73%, and the propylene carbonate selectivity can reach more than 85%.

The invention belongs to the field of monatomic materials, and particularly relates to a carbon material rich in nitrogen and monatomic zinc and application of the carbon material in catalytic activation of carbon dioxide, the content of nitrogen in the carbon material is 16.1 wt%-21.6 wt%, the monatomic zinc is distributed in the carbon material in a monatomic state, and the content of the monatomic zinc in the carbon material is 10.3 wt%-18.7 wt%. The high zinc loading capacity and nitrogen content can increase the catalytic active site density, optimize the electronic structure, and significantly improve the activity of the carbon material rich in nitrogen and monatomic zinc in catalyzing the activation of carbon dioxide.

The embodiment of the invention discloses an aerosol generating substrate section, a substrate sheet and an aerosol generating product, the aerosol generating substrate section comprises a sheet-shaped substrate, the aerosol generating substrate section is of a winding structure formed by winding the sheet-shaped substrate, and the sheet-shaped substrate can be heated to generate aerosol. The flaky substrate comprises a substrate layer and particle layers which are stacked, and the particle layers are arranged on the two sides, in the thickness direction of the flaky substrate, of the substrate layer; the particle layer comprises aerosol-generating matrix particles, and the aerosol-generating matrix particles are laid on the substrate layer. According to the aerosol generation matrix section, a stable air channel can be formed, and the suction resistance stability is improved; displacement caused by factors such as vibration in the transportation, storage or use process can be reduced, and the stability of suction resistance can be further improved. And the particle layers are arranged on the two sides of the substrate layer in the thickness direction of the flaky substrate, so that the loading capacity of aerosol generation substrate particles is improved, and the smoke amount is increased.

The invention relates to the field of agricultural product processing equipment, in particular to a pot body overturning structure and an automatic discharging device based on the pot body overturning structure, the pot body overturning structure comprises a machine body and a pot body assembly, and the pot body assembly is rotationally connected to the machine body; the pot body overturning assembly drives the pot body assembly to overturn around the rotation center of the pot body assembly, and the pot body overturning assembly comprises a servo motor, transmission teeth and an arc-shaped gear ring; the controller is arranged on the machine body; the sensor group is used for detecting the position state of the pot body assembly after overturning and resetting, and the controller is used for controlling the pot body overturning assembly to execute overturning and resetting actions according to a signal fed back by the sensor group. After processing is completed, the pot body overturning assembly automatically enables the pot body assembly to conduct overturning discharging, manual participation in discharging operation is not needed, the production efficiency is improved, safety is higher, the discharging process is controllable and low in impact through a buffer block and a buffer plate, and the complete shape and quality of discharged tea leaves are effectively kept.

This invention discloses a method for preparing a Pt / C catalyst by vacuum impregnation with an ionic liquid and its application. First, a carbon support is mixed with water and alcohol, ball-milled, and then mixed with nitric acid to obtain an acid-treated carbon support. Next, a precursor solution is prepared by mixing a platinum salt, an organic solvent, a surfactant, and water, and then an imidazole ionic liquid is added to it in portions to obtain a precursor solution containing the ionic liquid. This solution is mixed with the acid-treated carbon support and vacuum ball-milled to obtain a mixed slurry. This slurry is then vacuum freeze-dried to obtain a freeze-dried powder. Reduction and heat treatment are then performed to obtain the ionic liquid-doped Pt / C catalyst. The catalyst is then coated onto both sides of a proton exchange membrane to form a catalytic layer. Through this method, this invention not only effectively inhibits the aggregation, migration, and ripening of platinum particles during electrochemical processes, thereby significantly improving the catalyst's durability, but also enhances the catalyst's proton conductivity under low humidity conditions.

The application relates to a luggage technology field, in particular to a quick-release luggage trolley, which comprises a pull rod, a base, a connecting frame body, a locking assembly and a trundle, the connecting frame body comprises two front connecting pieces and a bearing rod, a rotating groove is integrally formed in the top side wall of the front connecting piece, one end of the bearing rod is rotationally connected in the rotating groove, the pull rod comprises a handle and a pair of telescopic rod bodies, the telescopic rod bodies are arranged on the top of the front connecting piece, the base is fixed on the bearing rod, the trundle is detachably connected with the front connecting piece through the locking assembly, a user shortens the telescopic rod bodies by pressing the handle, the base can rotate with the bearing rod with the front connecting piece as the center until abutting against the contracted pull rod, the trundle is quickly fastened with the front connecting piece and separated from the front connecting piece through the locking assembly, the occupied space of the device in the storage state is effectively reduced, and the application has the characteristics of improving the storage convenience.

The invention discloses a bamboo charcoal fiber cloth-based composite material as well as a preparation method and application thereof, and belongs to the technical field of electromagnetic shielding materials. The bamboo charcoal fiber cloth-based composite material comprises: a base cloth, which is a bamboo charcoal fiber cloth subjected to oxidation modification and activation treatment by TEMPO (2, 2, 6, 6-tetramethylpiperidine-1-oxygen radical); the gradient copper layer is chemically plated on the surface of the base cloth; the nickel layer is chemically plated on the surface of the gradient copper layer; wherein the density of the base cloth side copper layer is smaller than that of the nickel layer and the copper layer. The bamboo charcoal fiber cloth is subjected to surface treatment modification through a special process, and meanwhile, a gradient copper layer and a gradient nickel layer are formed on the surface of the bamboo charcoal fiber cloth, so that the bamboo charcoal fiber cloth-based composite material with light weight, structural stability and excellent electromagnetic shielding performance is prepared, and the requirements of flexible and broadband electromagnetic shielding application are met.

The utility model discloses process equipment for preparing amorphous polyaryletherketone carbon fiber prepreg by a solution method, which comprises a microwave solvent removing device which comprises a solvent removing cavity and a plurality of groups of glue scraping rollers arranged in the solvent removing cavity, the multiple sets of glue scraping rollers are sequentially arranged in the solvent removing cavity in the conveying direction of the carbon fibers, and the height of the glue scraping roller close to an inlet of the solvent removing cavity in the vertical direction is larger than or equal to the height of the adjacent glue scraping roller close to an outlet of the solvent removing cavity in the vertical direction. A plurality of groups of glue scraping rollers are designed at the same time, so that the retention time of the prepreg in the microwave solvent removing device is controllable, a solvent is fully volatilized, the height of the glue scraping rollers in the vertical direction is limited, redundant resin on the prepreg flows and is enriched, certain pressure is applied through the glue scraping rollers, the redundant resin is removed, the resin content is controllable, and the resin content is improved. Meanwhile, the combination with fibers is tighter, and the quality of the prepreg is obviously improved.

A hollow two-dimensional piezoelectric flexible hinge platform disclosed by the present invention comprises a flexible hinge main body, a working platform located in the central area of the flexible hinge main body, a displacement amplification mechanism, a flexible hinge connecting rod and a cover plate assembly, the flexible hinge main body is arranged in a hollow frame type structure, and a through hole for light beam straight-through is formed in the center of the flexible hinge main body. The number of the displacement amplification mechanisms is two, the two displacement amplification mechanisms correspond to X-direction movement and Y-direction movement of the platform respectively, and each displacement amplification mechanism comprises a first lever amplification mechanism and a second lever amplification mechanism which are symmetrically arranged on the two opposite sides of the flexible hinge body. The first lever amplification mechanism and the second lever amplification mechanism are both connected with piezoelectric actuators. The invention relates to the technical field of mechanical precision displacement driving, and the platform has a highly compact integrated structure, excellent motion decoupling performance, a high-precision differential driving mode and good bearing capacity while the central clear aperture is ensured.

A high-load cobalt-based single-atom catalyst for oxygen reduction and its preparation method are disclosed, belonging to the field of electrocatalysis technology. This method utilizes the cage structure in ZnCo-ZIF to encapsulate nitrogen-rich metal molecules, followed by high-temperature carbonization under nitrogen conditions to obtain the catalyst. Benefiting from the separating effect of Zn metal nodes in ZIF and the spatial confinement effect of the ZIF cages, as well as the high nitrogen content in the guest molecule, a cobalt-based single-atom catalyst with a loading of 4.0 wt% was prepared. Furthermore, compared to traditional preparation methods, the catalyst prepared using a mixed solvent exhibits a small particle size, resulting in a high specific surface area that fully exposes the active sites. The large specific surface area allows for the full exposure of the high-load metal atom active sites, thus demonstrating excellent performance in the oxygen reduction reaction, with a half-wave potential of 0.88 V and a limiting current density of 6.0 mA·cm⁻¹ in 0.1 M KOH electrolyte. ‑2 .

The invention provides a fiber multilayer composite air filtering material and a preparation method thereof. The fiber multilayer composite air filtering material comprises a fiber base material, a metal catalyst is loaded on the fiber base material, the surface of the fiber base material is covered with a nanofiber membrane, the fiber base material is composed of alkali-treated bamboo fibers and polymer fibers, and the nanofiber membrane contains an antibacterial agent and a silane coupling agent. The fiber multilayer composite air filtering material has the advantages of high catalyst loading capacity, excellent filtering efficiency, good mechanical strength and toughness and the like, the raw materials are wide in source, the process is simple and environment-friendly, and a new way is provided for development of multifunctional air filtering materials. The invention also provides a preparation method of the fiber multilayer composite air filtering material.

This application relates to the field of metal-organic framework material preparation technology, and provides a metal element-doped metal-organic composite and its preparation method. The molecular formula of the metal element-doped metal-organic composite is M. a Zr6O m (OH) n (OL) 6‑(x+y) / 2 (sol) x (blank) y N b , 0.01≤a≤2.3, 4≤m≤6, 0≤n≤4, 0.09≤x≤0.92, 1.8≤y≤6.02, 0.905≤b≤9.24; M is a metallic element, including at least one of Li, Na, K, Ca, Mg, Cu, Co, Ni, Fe, Cr, Zn, and Mn; OL is a dicarboxylic acid conjugated organic ligand; sol includes acetate, formate, and CH3(CH2). p COO ‑ At least one of the following, 1≤p≤6, blank is a ligand vacancy, and N is a counter ion.

The application discloses a multifunctional antibacterial coating bone implant device based on a selective vacuum perfusion process and a preparation method thereof. The method comprises the following steps: 1) pretreating a titanium alloy base; 2) performing anodic oxidation treatment on the pretreated titanium alloy base to construct a nanotube structure on the surface of the titanium alloy base; 3) selectively coating the treated titanium alloy base with a hydrogel adhesive, then immersing the titanium alloy base in a povidone iodine mixed solution to perform vacuum perfusion, and performing post-treatment, then again performing selective coating, immersing the titanium alloy base in a solution containing a bone growth promoting factor to perform vacuum perfusion, and performing post-treatment, then again performing selective coating, immersing the titanium alloy base in a solution containing a blood vessel growth promoting factor to perform vacuum perfusion, and performing post-treatment; and 4) encapsulating the obtained sample surface with an in-situ self-polymerized polydopamine layer, washing and freeze-drying. The bone implant device has antibacterial, bone growth promoting and blood vessel growth promoting functions, and can greatly improve the curative effect on bone fracture symptoms accompanied by infection.

The application discloses an organic amine modified HMS molecular sieve and application thereof in carbon dioxide capture, and specifically relates to the following steps: first, preparing mesoporous molecular sieve HMS, which contains two kinds of pore structures, 4.5-8.0 nm and 11.5-17.5 nm respectively, and a single wide diffraction peak is presented at 2theta=2.6 degrees in X-ray powder diffraction; then, grafting amino silane on the surface of the mesoporous molecular sieve HMS; and finally, immersing the mesoporous molecular sieve HMS in an organic amine solution to obtain a multilevel organic amine modified HMS molecular sieve. The synthesis method is simple, the carbon dioxide adsorption efficiency is high, and the thermal stability is good.

The application discloses a composite solid decoloring powder and a preparation method thereof, and belongs to the technical field of water treatment agent preparation. The modified nano titanium dioxide is obtained by coating titanium dioxide with 3-methyl acrylic acid sulfopropyl potassium salt grafted polydopamine. The titanium dioxide has photocatalytic effect and antibacterial property, can catalytically decompose pollutants in sewage, inhibit the breeding of bacteria in water, and can catalytically decompose free formaldehyde in dicyandiamide formaldehyde polycondensate. The modified nano titanium dioxide is loaded on phenolic resin foam, and after calcination, the nano titanium dioxide / foam carbon powder is formed. The large specific surface area and porous property of the foam carbon can increase the capture and fixation of free formaldehyde, and can synergistically accelerate the catalytic degradation of formaldehyde with the titanium dioxide. The dicyandiamide formaldehyde polycondensate grafted with castor oil is in-situ polymerized on the surface of the matrix. The castor oil grafting can significantly improve the dicyandiamide formaldehyde polycondensate, significantly increase the molecular weight, and increase the capture capacity.

The utility model discloses a parallel tail end multi-degree-of-freedom mechanical arm which comprises two groups of branch chains which are symmetrically arranged and fixed at two ends of a platform, each group of branch chains comprises a base, a first motor and a second motor are respectively arranged on two sides of the base, the first motor is connected with a first short connecting rod through a rocker arm, and the second motor is connected with a middle supporting piece. One end of the supporting piece is hung below the base through a support, the other end of the supporting piece is movably connected with the middle of the first long connecting rod, one end of the first long connecting rod is connected with the first short connecting rod, and the other end of the first long connecting rod is movably connected with the tail end platform. The other end of the second long connecting rod is movably connected with the tail end platform. According to the mechanical arm, the multi-degree-of-freedom parallel mechanical arm of the end effector can be achieved, and the problems that an existing parallel mechanical arm is complex in structure and high in control coupling degree, the degree of freedom of the end effector is limited, and installation and maintenance are difficult are solved.

The utility model belongs to industrial wastewater treatment technical field discloses a kind of Fenton oxidation pond packing shelf and Fenton reaction pond device, including packing shelf body and at least two hanging material layers, and packing shelf body includes upper shelf body and lower shelf body, and both are detachably connected along vertical direction, and upper shelf body top is provided with lifting connection structure;At least two hanging material layers are respectively arranged on upper shelf body and lower shelf body, and each layer hanging material layer includes multiple hanging material cross beams that are arranged in parallel along horizontal interval, and multiple filter bags are detachably and interval hung along the length direction of each hanging material cross beam, and filter bag interior is filled with zero-valent iron reagent, and raw water in oxidation pond can contact reaction with zero-valent iron reagent in its interior through the small hole of filter bag.The utility model effectively improves the contact efficiency of reaction reagent, reduces ferrous sulfate consumption, makes reaction process more sufficient, accelerates reaction rate, improves treatment effect;Meanwhile, it is convenient to quickly replace and supplement reaction reagent on packing shelf, and operation is simple.

The utility model relates to the field of speed reducer motor, and disclose a kind of fast insertion type speed reducer motor, a kind of fast insertion type speed reducer motor, including motor and speed reducer, the output shaft of motor is connected with the input shaft of speed reducer, still include the base of being set to the bottom of motor, the base of motor is installed on the top surface of base, square groove being opened in the top surface of base, square groove is at the side of motor, setting in the lifting platform structure of base square groove, lifting platform structure is placed with speed reducer, the height of lifting platform structure is adjusted according to the actual size of speed reducer, the fast insertion structure of being set on the output shaft of motor, the other side of fast insertion structure is connected with the input shaft of speed reducer, through the lifting platform structure of adjustable height, according to the actual size of speed reducer adjustment its input shaft height, make it with motor output shaft keep same level, simultaneously adopt fast insertion structure with rubber connecting pipe, annular boss and coaxial fixed assembly, by locking nut non-contact type fixation.

One or more embodiments of the invention provide a log type copy-oriented query method and related equipment. According to the log type copy-oriented query method, a query service is provided through the log type copy of any data fragment in a distributed database, and the log type copy of any data fragment is used for recording result data corresponding to submitted transactions on the data fragment; the method comprises the steps of obtaining a query request for any data fragment; determining a target index structure used for responding to the query request, wherein the target index structure is constructed based on result data of a specified version in the log type copy; based on a query condition indicated by the query request and the target index structure, searching target data in the result data of the specified version; and generating and returning a query result based on an output condition indicated by the query request and the target data. And the resource utilization rate and the read load sharing capability of the database system are remarkably improved.

This invention provides a method for preparing bamboo fiber for textiles, belonging to the field of fiber extraction technology. The preparation method includes bamboo strip pretreatment, enzyme immobilization, and bamboo fiber extraction. The bamboo strip pretreatment method is as follows: whole bamboo is taken, crushed and cut, and bamboo strips with a length of 6-8 cm, a width of 0.5-0.7 cm, and a thickness of 0.3-0.5 cm are taken. The strips are ultrasonically treated for 25-35 min, then soaked in NaOH solution for 30-40 min, filtered, washed with deionized water until neutral, and dried to a moisture content of 15-20% to obtain pretreated bamboo strips. The bamboo fiber extracted by this invention has a tensile strength of 1.21-1.28 GPa, a breaking elongation of 4.09-4.17%, an elastic modulus of 37.15-37.26 GPa, and an average enzyme activity retention rate of 66.3-68.4% after 10 reuses.

The application discloses a semantic perception routing scheduling method and system for computing power network, and belongs to the technical field of computing power network and communication. The application aims at the problems that the traditional host-centered routing scheduling mechanism cannot perceive service semantics and computing power state, resource supply and demand are not matched, and multi-computing power instance optimization capability is insufficient, and proposes an OSAF-SORS paradigm: by introducing a service tag (STag) decoupled from location and home as a new type of addressing routing identifier, an open service available priority (OSAF) routing scheduling mechanism is realized; based on deep reinforcement learning and multi-layer graph attention network, a service-oriented routing scheduling (SORS) algorithm is designed to jointly capture resource dependency and queue dynamics, complete multi-computing power instance optimization and path collaborative optimization. The application can significantly improve the service level agreement (SLA) achievement rate, resource utilization rate and load balancing effect, and is suitable for wide-area high-performance computing, immersive video, distributed AI training and other low-latency high-reliability business scenarios.

This utility model discloses a passive cooling gearbox, mainly relating to the field of remote control car gearbox technology. It includes a cooling motor frame, a transition drive shaft protective cover, and a secondary transmission fixing frame arranged sequentially from top to bottom. A transition drive shaft is located inside the transition drive shaft protective cover. A blower-type cooling wheel is located at the top of the transition drive shaft. A motor is mounted on the cooling motor frame, and a drive wheel is mounted on the motor shaft. An output shaft is mounted on the secondary transmission fixing frame. A transition wheel is located at the bottom of the transition drive shaft, and a driven wheel is located at the bottom of the output shaft, with the driven wheel and transition wheel being connected in a driving connection. A fixed mounting bracket is located on one side of the transition drive shaft protective cover. Both the cooling motor frame and the secondary transmission fixing bracket are hinged to the fixed mounting bracket via the output shaft. This utility model can improve the heat dissipation effect of the motor, reduce the risk of wire entanglement, and extend its service life.

This invention discloses a kung fu robot, belonging to the field of robotics technology. The robot aims to solve the technical problems of existing kung fu robots, such as limited joint freedom in the arms, resulting in a single punching path and a narrow blocking range. The kung fu robot includes an arm assembly, a waist assembly, and a leg assembly. The arm assembly is symmetrically arranged on both sides of the chest and consists of at least five servo motors connected in series. The first to third servo motors form the upper arm, and the fourth and fifth servo motors form the forearm. Each servo motor is independently controlled by a main control board inside the chest, achieving multi-degree-of-freedom shoulder and arm movements. The waist assembly has a sixth servo motor that drives chest rotation, and the leg assembly achieves bending movements through servo motors. This invention, through a multi-servo motor collaborative design, significantly improves the flexibility and diversity of arm movements, enabling the robot to smoothly simulate the force exertion process and complex offensive and defensive postures of real martial arts, enhancing its expressiveness and practicality.

The utility model relates to cleaning equipment and a driving assembly, the cleaning equipment comprises the driving assembly, the cleaning assembly and an energy supply assembly, the driving assembly comprises a rotor assembly and a stator assembly, and the rotor assembly comprises a driving shaft and at least one pair of magnetic parts fixed relative to the driving shaft and matched with a stator core body; the magnetic piece at least comprises a first magnet and a second magnet; at least parts of the radial outer ends of the first magnet and the second magnet are bent bodies which have opposite polarities and are matched with the same stator core body, and each bent body is provided with a first arc pointing outwards; the central angle corresponding to the first arc is recorded as beta, the included angle between the center line of the first magnet and the center line of the second magnet in the same magnetic piece is recorded as alpha, and alpha and beta meet the following relation that alpha / beta is larger than 1 and smaller than or equal to 2.22. According to the cleaning equipment provided by the invention, the shape structures of the stator core body and the magnetic part are optimized, so that the flexibility of the cleaning equipment is improved, and the use comfort and the cleaning efficiency of a user are improved.

This invention belongs to the field of wastewater treatment technology, specifically relating to a method for preparing a sponge iron-based ferrous silicate reducing agent for wastewater treatment. Sponge iron is activated in a dilute phosphoric acid solution to obtain activated sponge iron; the activated sponge iron is washed and then immersed in a ferrous solution, removed and washed, and then matured in a sodium silicate solution to obtain matured sponge iron; the matured sponge iron is washed and freeze-dried to obtain the sponge iron-based ferrous silicate reducing agent. The sponge iron-based ferrous silicate reducing agent prepared by this invention is easily separated from the effluent and has excellent and long-lasting reducing performance. It solves the problems of high reducing agent dosage, high salinity of the treated effluent, generation of large amounts of iron sludge, and the need for continuous addition of reducing agent in traditional reduction processes. Furthermore, the preparation method is simple, requiring no complex equipment or catalysts, and the raw material, sponge iron, is inexpensive and widely available, resulting in low production costs and suitability for large-scale preparation and engineering applications.

The invention belongs to the technical field of preparation of monatomic nano-enzyme materials, and particularly relates to a high-load Pt monatomic nano-enzyme as well as a preparation method and application thereof. The preparation method comprises the following steps: (S.1) dissolving FeCl3. 6H2O, H2PtCl4. 6H2O and PPh3 in DMF (Dimethyl Formamide), and carrying out rotary stirring to obtain a solution 1; dissolving BDC in DMF (Dimethyl Formamide) to obtain a solution 2; quickly adding the solution 2 into the solution 1, transferring the obtained mixed solution into a stainless steel high-pressure reaction kettle, carrying out hydrothermal reaction, and after the reaction is finished, washing the obtained product with ethanol and drying to obtain a pyrolysis precursor; and (S.2) placing the precursor in a graphite sample table groove of a Joule heat rapid heating device, carrying out Joule heat shock treatment, and cooling to room temperature to obtain the high-load Pt monatomic nano-enzyme. According to the invention, migration and agglomeration of Pt atoms at high temperature are inhibited, long-time sintering of a carrier skeleton is avoided, and high specific surface area and porous structure of the material are retained.

The application discloses an oral cavity cleaning device and a driving device for oral cavity cleaning. The oral cavity cleaning device comprises a brush handle assembly and a treatment head. The brush handle assembly comprises a holding shell and a driving device. The driving device comprises at least a stationary part and a rotating part. The stationary part comprises a housing element and a stator support accommodated in the housing element. The inner wall surface of the stator support is provided with a plurality of accommodation tooth grooves, and the extension direction of the accommodation tooth grooves is parallel to a first axis. The rotating part comprises a power output shaft and at least two rotor assemblies located in the stator support. The at least two rotor assemblies are sleeved on the power output shaft and are sequentially stacked along the first axis. From the cross section perpendicular to the first axis, there is a preset dislocation angle between adjacent two rotor assemblies. The technical scheme provided by the application can increase the power and the load resistance of the driving device without increasing the volume of the brush handle assembly, so as to improve the oral cavity cleaning effect.

This invention relates to the field of marine auxiliary equipment technology, specifically to a swivel and a boat having the same. The swivel includes a shaft; multiple lifting mechanisms are evenly arranged around the shaft along its axial direction; each lifting mechanism can be deployed to form a lift fan with the shaft or retracted to form a first swivel section; multiple drag mechanisms are evenly arranged around the shaft along its axial direction; the multiple drag mechanisms and multiple lifting mechanisms are alternately arranged in the vertical direction; each drag mechanism can be deployed to form a drag fan with the shaft or retracted to form a second swivel section; when the lifting and drag mechanisms are deployed, and the input shaft of the generator is connected to the shaft, the airflow drives the lift fan and drag fan to rotate together, thereby generating electricity; when the multiple lifting and drag mechanisms are retracted, and the output shaft of the first drive motor is connected to the shaft, the first drive motor can drive the first and second swivel sections to rotate.

The application discloses a tension distribution calculation method of a traction rope on a curved annular rope groove wheel, belongs to the rope groove wheel field, and solves the problem that a traditional friction force distribution calculation method cannot effectively calculate the friction force distribution of a rope groove wheel. The technical scheme for solving the problem mainly comprises the following steps: a parameterized model of the curved annular rope groove wheel is established, the curved path of the curved groove is parameterized, the micro-element method is adopted to analyze the force of the traction rope, the resultant force of the traction rope in the circumferential, radial and axial directions of the curved annular rope groove wheel is analyzed, the tension attenuation formula of the micro-arc segment is deduced, the tension attenuation is iterated according to the tension attenuation of the micro-arc segment, the tension value is calculated, and the tension distribution formula can be obtained after the tension value is fitted. The application is mainly used for accurately calculating the tension distribution of the traction rope on the curved annular rope groove wheel.