166results about How to "No loss" patented technology

The invention discloses a permanent magnet rotor surface-mounted magnetic steel mounting structure and method, and belongs to the technical field of motors, the permanent magnet rotor surface-mounted magnetic steel mounting structure comprises a rotor, a magnetic steel guide assembly is arranged above the rotor, the magnetic steel guide assembly comprises a plurality of pieces of simulation magnetic steel, the magnetic steel guide assembly is used for mounting magnetic steel to be mounted, and a mounting assembly is arranged at the bottom of the rotor. A plurality of locking assemblies are arranged on the mounting assembly, a plurality of magnetic steel mounting parts are arranged on the rotor, magnetic steel and a magnetic yoke before mounting are separated through a magnetic steel guide assembly tool, in the matching process of the magnetic steel and the magnetic yoke, the hand is evacuated to a safe position, safety risks are avoided, a magnetic steel pushing mode is not adopted, adsorption is prevented through a non-magnetic-conductive material, and the magnetic steel is prevented from being damaged. Glue pressing is used for replacing glue pushing, smooth installation of the surface-mounted magnetic steel is achieved, material loss is avoided, and the phenomenon that poor installation is prone to occurring in the mutual exclusion process of the magnetic steel, and the performance of a motor is affected is avoided.

The invention relates to a hardware routing table look-up method based on segmented unified storage. The method comprises the following steps: firstly, acquiring an IPv4 / IPv6 routing prefix, dividing the IPv4 / IPv6 routing prefix into 1-4 address fields according to 32 bits, allocating a unique forward and backward segment identifier for each field, constructing table entries containing the segment identifiers, 32-bit segment data and a next hop, and uniformly storing the table entries into the same TCAM. During table lookup, segmenting an address to be looked up according to the same rule, querying the TCAM from a first segment by taking segment data as a key, and recording a backward segment identifier and a next hop after hit; and if the backward segment identifier is invalid, directly returning to the corresponding next hop, and if the backward segment identifier is valid, continuing query by taking the identifier and the next segment of data as a joint key. And when the table item is not hit or the identification verification fails, selecting the table item with the longest prefix and the valid next hop in the matched section, and returning to the next hop. According to the invention, IPv4 / IPv6 routing table entries can be uniformly stored, the TCAM space utilization rate is improved, and meanwhile, the hardware table look-up efficiency is guaranteed.

The invention discloses a cavity enhanced Fabry-Perot interference resonant cavity, and belongs to the technical field of sensing detection. The transduction film is used as a transduction medium, vibration is generated through induction, signals are converted into vibration of the film, optical signals are modulated, and information to be measured can be obtained. According to the invention, the cavity enhancement structure is introduced, the optical fiber collimator and the transduction film jointly form an interference resonant cavity, and the phase sensitization of the optical microcavity is realized by improving the reflectivity of the cavity and prolonging the time of capturing light. Through stable interference of the resonant cavity, strong optical constraint is generated, and interaction between a light beam and a transmission signal is enhanced. In addition to the characteristics of high sensitivity, small loss, small size and high integration, the device has high expandability in the design aspects of bandwidth and sensitivity, and good sensing performance and design flexibility of the device provide a new opportunity for propelling the military and civil fields such as monitoring technology and biomedicine.

The present invention discloses an ocular implant delivery device, comprising a housing, a rotating wheel, a push-needle connecting rod assembly, a retraction connecting rod assembly, a sleeve and a puncture needle, a through hole is provided in the direction of the distal end of the housing, the sleeve passes through the through hole from the housing and extends to the outside of the housing, the sleeve is fixedly connected to the housing, the puncture needle passes through the sleeve, the proximal end of the puncture needle is fixedly connected to the retraction connecting rod assembly, the push needle of the push-needle connecting rod assembly passes through the inner hole of the puncture needle, the rotating wheel is connected in the housing through a rotating shaft, an opening corresponding to the rotating wheel is provided on the housing, the rotating wheel is respectively connected to the push-needle connecting rod assembly and the retraction connecting rod assembly through a gear rack mechanism, and as the rotating wheel rotates, the push-needle connecting rod assembly can be driven to move toward the distal end of the housing or the retraction connecting rod assembly can be driven to move in a direction away from the distal end of the housing. The present invention has a simple structure, is easy to operate, can improve the accuracy and safety of surgery, and makes surgery more labor-saving, and has higher system stability and reliability.

The invention discloses a high-voltage direct-current power transmission system oscillation suppression method based on MMC negative-sequence impedance remodeling. The method comprises the steps that equivalent admittance of a new energy unit considering MMC impedance characteristic influence is established; mMC negative sequence impedance remodeling control based on virtual parallel impedance is constructed; and designing control parameters considering impedance coupling degree constraint. According to the invention, the oscillation phenomenon of the system can be effectively suppressed, and safe and stable operation of the high-voltage direct-current power transmission system is ensured.

The invention discloses a continuous preparation method of lauroyl chloride, which comprises the following steps: heating and melting lauric acid to obtain lauric acid melt; the method comprises the following steps: preparing an overflow diode reactor, continuously introducing phosgene and lauric acid melt into a first tubular reactor, reacting at 50-100 DEG C to obtain a photochemical reaction solution, continuously overflowing the photochemical reaction solution into a second tubular reactor, continuously reacting the unfinished reaction solution, and driving light by nitrogen to obtain lauroyl chloride. The continuous preparation method disclosed by the invention has the advantages of simple process, low online liquid carrying amount, convenience in operation, low cost and the like, and the obtained product is low in chromaticity, high in purity, few in impurities, suitable for industrial production and wide in application prospect.

The invention relates to a device and a method for measuring the axial acceleration sensitivity of a circular tube hydrophone. The device comprises a base, a hasm, an end cover, a circular tube hydrophone to be measured, a top cover, a pre-amplifier, an accelerometer and a vibration exciter, wherein the base comprises a base plate and a semicircular pipe arranged in the center of the base plate in a protruding mode, and a plurality of installation holes of different sizes are formed in the base plate so that vibration exciters of different connectors can be installed in a matched mode; a lead groove is formed in the top of the semicircular pipe; the Hu is of a semicircular pipe structure, the pipe diameter of the Hu is matched with the semicircular pipe in the center of the base plate, and a plurality of threaded holes are formed in the middle of the inner wall of the Hu at intervals in the height direction. Through reasonable structural design, the primary hydrophone and the pre-amplification circuit are integrally designed, the axial acceleration response of the circular tube hydrophone can be compared and represented, and an important basis is provided for performance evaluation and application of the circular tube hydrophone.

The invention provides a method for comprehensively recovering lithium and cobalt from a waste lithium cobalt oxide battery positive electrode material, which comprises the following steps: (1) pretreating the waste lithium cobalt oxide battery positive electrode material to obtain a lithium cobalt oxide positive electrode active material; uniformly mixing the lithium cobalt oxide positive active material with a sulfenyl compound and a carbon source to obtain a mixture; the mixture is subjected to inert atmosphere roasting, grinding, leaching and filtering in sequence, and a lithium-containing solution and sulfur-containing filter residues are obtained; (2) carrying out acid leaching impurity removal on the sulfur-containing filter residues, and filtering to obtain cobalt sulfide residues; (3) roasting the cobalt sulfide slag in an oxygen atmosphere to obtain a roasted product; and (4) the roasted product is leached and filtered, and a cobalt sulfate solution and cobaltosic oxide are obtained. According to the method, soluble sulfate and high-purity cobalt oxide can be obtained, and the method is short in process, low in cost and high in lithium selectivity.

The invention relates to a method for preparing a sample wafer for X fluorescence analysis of bentonite by using a melting method, which comprises the following steps: 1) adding a flux and a bentonite sample into a crucible, dropwise adding a boric acid-glycerol solution, and stirring until the mixture is muddy; (2) adding a liquid oxidant into the crucible, uniformly stirring, wiping the head of the glass rod with quantitative filter paper, and putting the wiped filter paper into the crucible; and 3) firing the crucible on a high-frequency sample melting machine until the solid in the crucible is molten into a liquid state, adding a release agent, slightly cooling, and demolding to obtain the sample for X fluorescence analysis. The method has the advantages that the operation is simple, the flaking rate is high, and prerequisite conditions are provided for quickly, accurately and reliably measuring the primary and secondary components of the bentonite. According to the method, the sample does not need to be fired at high temperature by a muffle furnace in advance, the platinum crucible does not need to be pretreated, the detection period is remarkably shortened, and the power consumption cost is reduced.

The invention discloses an ICP-OES (Inductively Coupled Plasma Optical Emission Spectrometer) method for determining the content of cerium in aviation gear steel. The method comprises the following steps: setting working parameters of an inductively coupled plasma emission spectrometer; determining the blank solution and the cerium standard solutions under different concentrations by using an inductively coupled plasma emission spectrometer, and drawing a cerium element concentration standard curve; determining a to-be-determined sample solution by using the inductively coupled plasma emission spectrometer, and then determining the content of the cerium element in the to-be-determined solution by combining the cerium element concentration standard curve. According to the method, the content of the cerium element in the aviation gear steel is accurately measured, meanwhile, it is guaranteed that other elements are accurately measured, no element loss is generated, and compared with a steel mill test result, a sulfuric acid-phosphoric acid fuming method, a perchloric acid fuming method and a spectrophotometric method, the difference is small, precision is high, and accuracy and reliability are achieved.

The utility model relates to a water-soluble hexavalent chromium filtering and collecting device, which belongs to the field of laboratory collection, and comprises a Buchner funnel (1) and a tray (2), the Buchner funnel (1) comprises a funnel opening (3) and a funnel neck (4), the funnel neck (4) is arranged at the bottom of the funnel opening (3), the funnel neck (4) is connected with the tray (2), the Buchner funnel (1) is taken out, and a beaker (11) filled with filtrate is taken out at the same time. The Buchner funnel (1) is provided with a suction filtration bottle (5), the suction filtration bottle (5) is provided with an extraction opening (6), the extraction opening (6) is connected with an extraction pipe (7), the extraction pipe (7) is connected with the suction filtration bottle (5), and the suction filtration bottle (5) is connected with the suction filtration bottle (5). The exhaust pipe (7) is connected with a vacuum pump (8), so that the filtering effect is improved, and the filtering is faster.

The utility model discloses an emulsion bottle equipped with switch pump, including bottle body and switch pump, bottle body and switch pump detachable connection, switch pump includes shoulder cover, pump core and head cap, shoulder cover and bottle body detachable connection, pump core installs on the shoulder cover, head cap installs on the pump core, switch pump still includes switch mechanism, and switch mechanism is used to prevent switch pump from being mistaken touch, so as to prevent the accidental loss or loss of content. The emulsion bottle includes bottle body and switch pump, the switch pump includes shoulder cover, pump core, head cap and switch spare, is used for preventing switch pump from being mistaken touch, so as to realize the accidental loss or loss of content, when taking content, need to rotate head cap to change the position of first switch spare, remove the restriction of second switch spare to first switch spare, can only make head cap be pressed, and then play the effect of mistaken touch prevention, guarantee that content is normally taken, and will not accidentally lose or lose.

The application provides a three-dimensional reconstruction method based on multi-dimensional information fusion and a convolutional neural network, and comprises the following steps: acquiring polarized sub-images of a measured object under four transmission polarization directions and including multiple detection spectral bands through a multispectral polarization camera; performing image registration and joint denoising on all images; calculating polarization parameters of the measured object, combining spectral information and polarization information to calculate an azimuth angle and a zenith angle of the measured object; and acquiring surface normal vector component three-dimensional data of the measured object through a surface normal reconstruction model constructed based on a convolutional neural network and with the aid of physical prior knowledge. The method provided by the application can effectively restore the texture details of the surface of the measured object, can realize fast three-dimensional information acquisition of a measured object with a surface simultaneously having a diffuse reflection and a specular reflection characteristic in a complex indoor or outdoor scene under illumination conditions, and is helpful to expand the application range of the polarization three-dimensional reconstruction technology.

The application discloses a blue fluorescent organic light emitting diode, which comprises a substrate, an anode, a hole injection layer, a hole transport layer, an electron blocking layer, a light emitting layer, an efficiency enhancement layer, an electron transport layer, an electron injection layer and a cathode in sequence; the efficiency enhancement layer material is 4-(2,7-di(naphthalene-2-yl)-9H-carbazole-9-yl)benzonitrile; the light emitting layer is composed of a host material and a fluorescent guest dopant; the host material is 9-(4-(10-phenyl-9-anthryl)phenyl]9H-carbazole; and the fluorescent guest dopant is 1-4-di-[4-(N,N-diphenyl)amino]styrylbenzene. Through a high-energy triplet state anti-inter-system crossing process, the efficiency enhancement layer can obtain 100% of the exciton utilization rate at most, the electroluminescent efficiency of the device is greatly improved, and good stability is maintained.

This invention relates to the field of CMOS integrated circuit manufacturing processes and discloses a method for fabricating a PIP capacitor. First, the WSi of the lower electrode of the PIP capacitor is reduced by implantation. x Thin film stress is reduced, and then parasitic SiO2 on the surface of the lower electrode of the PIP capacitor is reduced by dry etching. WSi on the lower electrode is reduced by implantation. x Thin-film stress can improve the reliability of PIP capacitors; the principle for selecting the injection energy is to maximize the depth (R0) of the injection Gaussian distribution. p +3ΔR p ) to reach the entire WSi x 80% of the film thickness; WSi after implantation x The stress in the thin film was reduced by an order of magnitude by selecting phosphorus to eliminate WSi. x Thin film stress is a concern because phosphorus is frequently used for N-type polycrystalline doping. Simultaneously, phosphorus implantation also increases the polycrystalline doping concentration and reduces polycrystalline depletion.

The utility model discloses a laser cutting device, and belongs to the technical field of cutting equipment. According to the laser cutting device, the to-be-cut strip material is conveyed to the cutting table through the feeding mechanism, and the height of the laser galvanometer assembly is adjusted through the laser adjusting driving piece, so that laser emitted by the laser galvanometer assembly can cut the to-be-cut strip material on the cutting table. Loss caused by increase of the use frequency is avoided, the cutter does not need to be maintained and replaced, sheet materials cut by laser are high in consistency, and powder falling and burrs can be reduced; and meanwhile, dust above the cutting table and on the cutting table is adsorbed through the first dust suction assembly and the second dust suction assembly correspondingly, the dust removal effect is guaranteed, then the dust is prevented from influencing products, and the product quality is guaranteed.

A double bypass control extraction steam type hybrid heat exchange frequency modulation system, including a high-pressure cylinder, a medium-pressure cylinder, a low-pressure cylinder, a condenser, a condensate pump, a lower-level low-pressure heater, a first bypass controller connected to the lower-level low-pressure heater through a main pipeline, an upper-level low-pressure heater, a second bypass controller connected to the upper-level low-pressure heater through a main pipeline, a deaerator, a high-pressure heater directly connected to the deaerator through a pipeline, and a reheater whose inlet is connected to the second bypass controller through a pipeline and to the high-pressure cylinder through a steam pipeline, and whose outlet is connected to the medium-pressure cylinder through a steam pipeline. The present invention can quickly respond to the frequency modulation requirements of the power grid to the load changes of the unit, avoid frequent switching of the steam inlet automatic regulating valve during turbine frequency modulation, operate stably and reliably, ensure safe operation of the turbine, significantly improve the life and flexibility of the unit, save energy significantly, and have a large frequency modulation range. It can be widely used in the field of flexible frequency modulation of power plants.

The application belongs to the technical field of medicine, and particularly relates to a method for embedding micro-organoids or cells with agarose. The method for embedding micro-organoids or cells with agarose comprises the following steps: 1) fixing micro-organoids or cells with a fixing solution; 2) washing the fixed organoids or cells, removing supernatant after centrifugation, and obtaining organoid or cell precipitate; 3) pre-embedding organoids or cells with agarose; 4) taking out the agarose pre-embedded organoids or cells after demolding, and transferring the agarose pre-embedded organoids or cells to an embedding box, and sequentially performing ethanol gradient dehydration, transparent treatment and paraffin wax immersion treatment on the sample according to a specific procedure; and 5) paraffin embedding. Compared with the prior art, the application has the following beneficial effects: improving organoid / cell density; by agarose embedding, reducing the relative dispersion volume of organoids / cells, significantly improving the density of the sample in the slice, facilitating observation and detection, and having good detection effect.

The invention relates to the technical field of lithium ion batteries, and particularly provides a charging and discharging method of a lithium ion battery. The invention aims to solve the problem of poor cycle performance of the lithium ion battery of the existing blending system. Therefore, the charging and discharging method of the lithium ion battery comprises the following steps: charging the lithium ion battery according to a first constant-current charging mode until the voltage reaches V1, and then converting into a first constant-voltage charging mode; continuously charging according to the first constant-voltage charging mode, and switching to a second constant-current charging mode until the charging rate is reduced to a second charging rate C2; continuously charging according to a second constant-current charging mode, and switching to a second constant-voltage charging mode until the voltage reaches Vmax; continuously charging according to a second constant-voltage charging mode until the charging rate is reduced to a cut-off charging rate Cmin, and stopping charging; and / or, the lithium ion battery discharges according to the first constant-current discharge mode until the voltage is reduced to V2, and then the lithium ion battery discharges according to the second constant-current discharge mode.

The invention discloses self-compacting concrete and a preparation method thereof, and relates to the technical field of concrete, and the concrete comprises cement, fly ash, mineral powder, water, sand, stone and a modified water reducer. The modified water reducing agent is a polymer prepared from a hydroxyl-containing monomer I, a double-bond-containing acyl chloride monomer II, an unsaturated polyether monomer III and a double-bond-containing monomer IV in a mass ratio of (0.5-1.5): 1: (9-12): 1 through esterification reaction and double-bond addition polymerization, and hydroxyl, carboxyl and a polyether side chain are introduced into a molecular chain of the polymer at the same time. According to the water reducer, through the synergistic effect of hydrogen bond stable adsorption, steric hindrance and electrostatic repulsion, the compressive strength of concrete is improved, the slump is reduced, the balance of super-long retarding and high-strength development is achieved, and the comprehensive performance is excellent.

The present invention belongs to the technical field of optical detection in optical fiber transmission, and discloses an optical signal detection device applied to a bidirectional optical fiber transmission system, which solves the problem of dynamic optical power loss detection of optical signals in the bidirectional optical fiber transmission system composed of optical modules of the SFF‑8472 protocol standard during use. The device collects the real-time transmitted optical power and received optical power data of the optical modules in the bidirectional optical fiber transmission system, and calculates the dynamic change of the current optical power through the optical power threshold set by the host computer control computer; in addition, the device realizes optical power detection of up to 64 bidirectional optical fiber transmission systems. The present invention solves the problems of collection, calculation and result reporting of transmitted and received optical power in a bidirectional optical fiber transmission system, and has accurate optical power detection, which is conducive to locating optical path and circuit faults. It can also be used for dynamic real-time detection of optical power in a bidirectional optical fiber transmission system composed of optical modules of the SFF‑8472 protocol standard, and provides data support for it.

The present invention relates to an energy-saving power supply and storage device for a photovoltaic power generation system applied in the field of photovoltaic power generation systems, comprising a ring network cabinet and a photovoltaic panel, wherein a cleaning assembly comprising a threaded screw, a cleaning block and a guide slide bar is arranged at the upper end of the photovoltaic panel, the threaded screw bar and the guide slide bar are both rotatably installed at the upper end of the photovoltaic panel, the threaded screw bar threads through the cleaning block, the guide slide bar slides through the cleaning block, the cleaning block is slidably fitted with the upper surface of the photovoltaic panel, a wind wheel is arranged on one side of the photovoltaic panel, a transmission mechanism is arranged between the wind wheel and the threaded screw bar, the wind wheel can be driven to rotate by external wind force through the coordinated arrangement of the wind wheel, the threaded screw bar and the transmission mechanism, thereby driving the cleaning block to slide back and forth in contact with the upper surface of the photovoltaic panel to clean the upper surface of the photovoltaic panel, thereby ensuring that the photovoltaic panel fully utilizes solar energy, and the cleaning process only relies on the external wind force, does not cause power loss, and is more energy-saving.

The utility model discloses a plastic vacuum forming machine capable of cutting and blanking, which comprises a plastic vacuum forming machine main body with an existing structure, two sides of the plastic vacuum forming machine main body are respectively provided with a feeding assembly and a material receiving assembly, and a cutting assembly is arranged between the plastic vacuum forming machine main body and the material receiving assembly; the feeding assembly comprises a feeding support and a feeding roller rotationally connected to the feeding support, a plastic film barrel is installed and connected to the feeding roller, the end of at least one end of the feeding roller penetrates out of the feeding support to be fixedly provided with a ratchet wheel, a limiting block is fixed to the feeding support, an inserting channel is formed in the limiting block, and the inserting channel is communicated with the plastic film barrel. A balancing weight is arranged in the insertion channel, and a limiting surface matched with the ratchet wheel is arranged on the balancing weight; compared with the prior art, the feeding device has the advantages that the feeding device is simple in structure, reverse rotation of the feeding roller can be prevented due to the ratchet wheel, and discharging and winding can be facilitated due to the cutting assembly.

The invention discloses a tundish water nozzle flow control system and method, which can adjust the current of the electromagnetic flow control mechanism coil in real time according to the liquid level of the molten steel in the crystallizer, thereby adjusting the electromagnetic field in real time, and realizing the precise control of the flow rate of the molten steel in the water nozzle. This structure and control method are not limited by the size of the water nozzle, and can be applicable to water nozzles of different sizes. At the same time, the adjustment of the flow rate of the molten steel in the water nozzle is realized through electrical signals, and there is no mechanical structure, and the advantages of fast response speed, high control accuracy, no material loss, continuous production, energy saving and environmental protection can be realized.

The present invention discloses a sludge feeding device, comprising: a sludge pushing power device, used to receive sludge and transport it to an incinerator through a sludge pushing channel; a variable diameter sludge discharging device, used to receive the sludge output from the sludge pushing power device, and increase or decrease the sludge passing capacity entering the incinerator; an isolation pushing device, which pushes the sludge coming out of the variable diameter sludge discharging device into the incinerator; an auxiliary unblocking device, used to clear the blocked channel; a coordination control system, used to control the sludge pushing power device, the variable diameter sludge discharging device, the isolation pushing device and the unblocking device to coordinately send the sludge into the incinerator. The present invention sends the sludge that has undergone preliminary pressure filtration into the boiler, so that the sludge is not dried, has no odor diffusion, does not affect the surrounding environment, and can be controlled to enter the furnace for incineration in real time.

The utility model provides a self-powered intelligent water meter based on electromagnetic power generation. The self-powered intelligent water meter comprises a first built-in cavity, a second built-in cavity, a water inlet and a water outlet, the first built-in cavity and the second built-in cavity are connected through a bolt, the water inlet is communicated with the first built-in cavity, and the water outlet is communicated with the second built-in cavity. According to the utility model, the electric signal generated by the coil is utilized, the self-power supply technology and the self-sensing technology are combined, and multiple functions are realized through the simple structure; a switch control mode is adopted in the power supply management system, so that voltage and current are only used when needed, and no electric energy is consumed in other time; the power management circuit realizes a fully-automatic switching function through battery voltage detection, so that the whole system comprises the wireless transmission module and can be called as a real self-powered system; the energy of the energy source is fully and efficiently utilized, so that no energy loss exists in the energy conversion and distribution process.

This invention provides a film that combines thermal conductivity, thermal insulation, and electromagnetic shielding. It includes a high thermal conductivity film, a phase change film, and a thermally insulating electromagnetic shielding film. The high thermal conductivity film and the thermally insulating electromagnetic shielding film are respectively disposed on both sides of the phase change film. The thickness of the high thermal conductivity film is 0.01–0.5 mm; the thickness of the phase change film is 0.1–1 mm; and the thickness of the thermally insulating electromagnetic shielding film is 0.05–1.5 mm. This invention, combining thermal conductivity, thermal insulation, and electromagnetic shielding, can effectively solve the problem of poor heat dissipation in electronic devices such as mobile phones under high load, while reducing the impact of electromagnetic radiation on users. The product is lighter, thinner, and more flexible; the entire film product can be completely folded without material breakage.

The present application relates to the technical field of pesticides, and discloses a phase change eutectic carrier embedded with a photothermal agent as well as a preparation method and application thereof.The phase change eutectic carrier embedded with the photothermal agent mainly comprises a photothermal agent, a fatty acid, an organic solvent and water.The preparation process of the preparation is simple, the conditions are mild, a large number of additives are not needed, and the preparation can be quantitatively prepared.The dispersion and utilization rate of the bactericide can be improved through eutectic, and the effectiveness of the bactericide can be improved.The preparation is suitable for various application modes such as seed coating and soil treatment, can play various synergistic functions such as temperature response release, prolonging drug retention time, enhancing adhesion and permeability on the surface of pathogenic bacteria, and is a kind of green and efficient bactericide dosage form, which has a wide application prospect in green and intelligent agriculture.

The utility model provides a spliced wood board adopting outwards-turned sharp-angled barbs for insertion, a group of outwards-turned sharp-angled barbs formed by obliquely cutting a section of notch from the edge of a body are uniformly distributed on the butt joint end face of a unit wood chip at intervals, and the shape of the notch is matched with that of the outwards-turned sharp-angled barbs; the shapes and the distribution positions of the outwards-turned sharp-corner barbs on the butt joint end faces of every two adjacent unit wood chips are the same, but the directions of sharp corners of the outwards-turned sharp-corner barbs on the butt joint end faces of every two adjacent unit wood chips are opposite, and during splicing, the outwards-turned sharp-corner barbs of every two adjacent unit wood chips are obliquely inserted into the notches of the corresponding outwards-turned sharp-corner barbs of the opposite unit wood chips. The other butt-joint end faces of every two adjacent unit wood chips are attached together, and all the butt-joint end faces of every two adjacent unit wood chips are connected in a bonding mode through adhesives. According to the spliced wood board, when the outwards-turned sharp corner barbs on the butt joint end faces of the unit wood chips are machined, no material needs to be removed, wood loss cannot be caused, the total length of the spliced wood board is consistent with the accumulated length of the unit wood chips, and wood resources can be effectively saved.

The invention provides a magnetic suspension generator rotor vibration suppression device and method, and belongs to the technical field of magnetic suspension generators, and the device comprises an electromagnetic bearing, a passive magnetic bearing and a damper; the electromagnetic bearing comprises an iron core and two coil assemblies, the iron core is installed on the outer wall of the rotor, and the two coil assemblies are arranged around the iron core; the passive magnetic bearing comprises an inner-ring permanent magnet and an outer-ring permanent magnet, the inner-ring permanent magnet is mounted on the outer wall of the rotor, the outer-ring permanent magnet is mounted on the inner wall of the generator shell, and the two corresponding permanent magnets have the same magnetism; the damper is installed on the generator and provided with a damping body and a stress sensor, one end of the rotor is connected to the damping body, and one end of the damping body is connected to the stress sensor. According to the magnetic suspension generator rotor vibration suppression device provided by the invention, by virtue of the radial and axial targeted suppression design, the out-of-control galloping of the rotor caused by excessive vibration is effectively avoided, and the operation stability and safety of the generator are guaranteed.