1112 results about "Joint action" patented technology

The invention relates to a set of electrocatalytic strong oxidizer materials, comprising a nano-function anode material which compounds nano oxide particles and catalyzes metal nano particles on a titanium substrate, and a nano-function cathode material which takes titanium or stainless steel as a substrate and introduces transition metal nano-particles on the surface thereof. By the electro-catalytic advanced oxidation technology, under the catalytic action of electrocatalytic strong oxidizer materials, water body can generate a hydroxyl radical with strong oxidizing performance and an oxygen radical; and if a chloride ion exists in water, hypochlorite can be generated. Under the joint action of a plurality of types of strong oxidizers, the algae cells in the water body and various harmful bacteria can be killed; and simultaneously the ammonia in water and the water-soluble organic matters can be degraded, so the goal of purifying water is achieved. According to the electrocatalytic advanced oxidation theory, the electrocatalytic strong oxidizer materials does not need to add any chemical agent when in application, does not have secondary pollution, and has good safety, high efficiency and low energy consumption.

The invention relates to a downhole tool for achieving efficient rock breaking through spin vibration, and belongs to the technical fields of petroleum and natural gas exploitation and drilling tools. According to the technical scheme, drilling fluid drives a turbine to rotate, a turbine rotor drives a transmission shaft to rotate to drive a disc valve set to periodically rotate, the open area changes, a periodic pressure pulse is generated to act on a vibration nipple to generate reciprocating vibration, the friction resistance between a drilling column and the well wall is effectively improved, and mechanical drilling speed is increased; the lower end of a tooth-shaped impact hammer head is provided with a tooth-shaped curved surface which is meshed with a tooth-shaped curved surface of a lower-end transmission connector, and the lower-end transmission connector is driven by a transmission shaft to generate rotating motion, so that the tooth-shaped impact hammer head is driven to rotate to generate axial reciprocating impact on the lower-end transmission connector under the joint action of the tooth-shaped impact hammer head and a force accumulating spring. According to the downhole tool, the structure is simple, the friction resistance is small, effective bit pressure and effective vibration are increased, the mechanical rotating speed is increased, and the cost is reduced.

The subject of the invention is an apparatus, system and process for liquid separation by reverse osmosis, nano-, ultra- and micro-filtration under the joint action of the differential pressure built up on the either side of the membrane (22) located in the apparatus for membrane separation (1), continuous rotation of the body (15, 17, 18) in the immediate proximity to the selective layer of the said membrane, oscillation of the liquid flow, caused by the means (15, 17, 18) and induced vibration of the said membranes. The superposition of the said continuous rotary movements, liquid oscillations and membrane vibrations on each other result in the reduction of membrane clogging with the substances being retained.

The invention belongs to the technical field of strength tests in aviation, and particularly relates to a test device capable of evenly applying an axial compression load and a shearing load. The test device comprises a shearing load applying component 1, an axial compression load applying component 2, a lower platform component 3 and a rib-adding flat plate component 4. According to the technology for independently loading the compression load and the shearing load, adopted by the device, the device not only is suitable for the flat plate, but also is suitable for a rib-adding flat plate. Furthermore, the test debugging of the single axial compression load and the single shearing load under the condition that the rib-adding flat plate is invariable in an installing posture can be realized, so that the reference can be provided for the analysis of the stress state of a lower wall plate under the joint action of the compression load and the shearing load. The device applies shearing force by the self-balance principle of a whole frame and a 'load balancer', so that the shearing force can be evenly applied, the axial rigidity of the rib-adding flat plate can not be enhanced due to an adopted segmental shearing reinforcement block, a compression load applying effect can not be influenced, and a 'side frame effect' can be avoided.

The invention discloses a charging pressing forming method for a variable-cross-section special-shaped pipe, and relates to a forming manufacturing method of a metal pipe. The problems that an existing low-internal-pressure forming technology only can form a pipe with the unchangeable section perimeter, and meanwhile, in the internal-high-pressure forming process of an advanced high-strength steel variable-cross-section pipe, the pressure is high, springback is large, and a mold is seriously worn are solved. The forming method comprises the steps that firstly, an upper expansion mold and a lower expansion mold are assembled on a pressure machine; secondly, the upper expansion mold descends to perform mold assembly, a pipe blank is subject to charging, and the pipe blank expands until the pipe blank is attached to the mold; thirdly, the internal pressure of the pipe blank is relieved; fourthly, an upper pressing block and a lower pressing mold are assembled on a pressure machine; fifthly, the upper pressing block descends to perform mold assembly; sixthly, under the joint action of mechanical pressure of the mold and hydraulic pressure of an inner cavity of a variable-cross-section round pipe, mold attaching is carried out, the variable-cross-section round pipe is formed into the variable-cross-section special-shaped pipe, and the forming process is finished; and seventhly, the internal pressure of the variable-cross-section special-shaped pipe is relieved, and the variable-cross-section special-shaped pipe is cut, so that the variable-cross-section special-shaped pipe meeting the design requirement is obtained. The method is used for forming the variable-cross-section special-shaped pipe.

The invention belongs to the field of feed and is particularly suitable for feeding crabs. The crab feed is mainly characterized in that: (1) various animal and vegetable proteins, starch, trace elements, an auxiliary agent, a feeding promotion agent and the like serving as raw materials are compounded, so that the nutrient contents of the crab feed are more balance and comprehensive, and the requirements of the crabs during different growing periods can be met only by adjusting the ration of relative raw materials in the formula; and (2) the modified plastic processing machinery and process are used, and simultaneously the processes of mixing, shearing, curing, swelling, granulating and the like of the raw materials are also completed. Under the joint action of the two factors, the shapeof the product is stable, the flexibility is adjustable, and the product is not loosened after being soaked in water for several hours, so that the product is in accordance with the feeding habit of the crabs. Because the raw materials comprise fly maggots and earthworms that provide a certain amount of natural antibiotic and immunological factor, the product is insusceptible to decay and deterioration and can improve the disease-resisting capability of the crabs taking the crab feed. The crabs cultivated by the crab feed have the advantages of quick growth, fresh and smooth meat and rich nutrition.

The invention discloses a novel lepidolite flotation method including primary rough selection, secondary fine selection and secondary scavenging. During the flotation, sodium silicate is added as an inhibitor with the amount ranging from 1400g / t to 1900g / t; an anionic collector is sodium oleate or oxyparaffin soap 731 with the amount ranging from 480g / t to 700g / t; and a cationic collector is dodecylamine or coconut oil amine with the amount ranging from 130g / t to 160g / t. The adding sequence of collectors is the anionic collector first and the cationic collector second, or the anionic collector and the cationic collector are added together. By the method, the lepidolite is selected through the combination of the anionic and the cationic, good flotation effect can be realized, flotation efficiency is high, and meanwhile, the synergistic effect is generated between the anionic collector and the cationic collector, and results from joint action of three mechanisms of coadsorption, charge compensation and function complementation.

The invention provides an optical micro-hand based on a three-core fiber and a method for preparing the same. The fiber comprises a three-core fiber and a single-core fiber which is in coupled connection with the rear of the three-core fiber and the connection between the three-core fiber and the single-core fiber is realized by applying heating, fusing and tapering the welding point after welding. The other end of the three-core fiber is made into a cone by sintering at the sharp end after grinding or heating the ends of the fiber and applying fusing and tapering. Aiming at the defect and deficiency in the prior art, the optical micro-hand discloses an optical micro-hand based on a three-core fiber which can form a cross combination light field by grinding or tapering the ends of the fiber based on the three-core fiber by making use of the joint action among external refraction, internal reflection and external refraction as well as a cone gradual wave guide and further form a three dimensional gradient force potential trough at the convergence point of combination light fields so as to realize three dimensional trapping of tiny particles.

The invention discloses a device for removing fine particles by joint action of acoustic agglomeration and mist spray and a method of the device. A compressed drive sound source is arranged at the top of a main agglomeration chamber body, and connected with a power amplifier and a signal generator sequentially; a smoke inlet is formed in the lateral wall of the upper part of the main agglomeration chamber body; a nozzle is arranged inside the upper part of the main agglomeration chamber body, and connected with a buffer tank, a plunger type metering pump and a storage tank respectively; an induced draft fan is arranged at the lateral wall of the lower part of the main agglomeration chamber body; a sound-absorbing sponge is arranged at the bottom of the main agglomeration chamber body. Fine particles in dust-containing airflow such as discharged smoke from a coal-fired power plant are preprocessed by using joint action of acoustic agglomeration and mist spray, so that the acoustic agglomeration efficiency of the fine particles is greatly improved, and the target of efficiently removing particulate matter 2.5 (PM2.5) is achieved by combining with subsequent traditional dust removers. Thus, emission of the PM2.5 is controlled. The sound pressure level required by the method of combining acoustic wave with mist spray is much lower than that of the method only adopting the acoustic wave, so that the energy consumption of acoustic agglomeration is effectively reduced.

The invention relates to a subsurface flow constructed wetland sewage treatment system by drop water aeration oxygenation, composed of drop water aeration subsurface flow constructed wetlands in one stage or multistage series. Each stage of drop water aeration subsurface flow constructed wetland comprises a bed body, an inflow barricade, an outlet barricade and a drop water baffle; wherein a plurality of deflectors, gravel fillers and emergent aquatic plants are arranged in the bed body between the inflow barricade and the outlet barricade. The invention is even in water distribution, small inwake space and uniform in water impact, residence time of sewage in the bed body is extended, blocking is difficult, thus being beneficial to improving effluent quality and biodegradation of microorganism on nutrient such as nitrogen, phosphor and the like in the sewage, and construction and running cost is low. The invention, under the joint action of the effects, can effectively degrade pollutant of urban and town domestic sewage, a small amount of industry waste water and farm drainage and is applicable to mountain land and hilly country with certain gradient.

The invention relates to an intelligent multi-police command center management platform, which comprises a reporting system, a receiving system, an assigning system, an action system, a police affair supervision system and a police affair hotspot analysis system, the reporting system can rapidly locate informants, the receiving system can automatically classify same cases according to search conditions and synchronize receiving sheets with report recordings, the assigning system can utilize police affair terminals to assign policemen, the action system can track police cars and policemen in real time by means of a GPS (Global Positioning System), and the police affair supervision system can supervise case-handling situations in real time. By establishing the intelligent multi-police command center management platform, a technical support surface for an entire urban public security control system can be expected to be formed gradually, consequently, the unified command, visualized positioning, quick response and cooperative operation levels of public security agencies can be increased, a new information and police affair pattern of city-level, district-level, station-level, police car-level and policeman-level joint action can be realized, moreover, the working efficiency and social public security control ability of the public security agencies and the living satisfaction of citizens can be further increased, and the dynamic management of social public security under the new situation can be better satisfied.

The invention discloses a method for preparing tobacco activated carbon based on low temperature plasma modification. The method is characterized by comprising the steps of: firstly drying and crushing waste and inferior tobacco into fine particles, and performing high temperature carbonization on the fine particles under nitrogen protection so as to obtain tobacco scorching samples; then putting the tobacco scorching samples into an inorganic acid solution for treatment, then cleaning the treated tobacco scorching samples until the cleaned tobacco scorching samples are neutral, putting the neutral scorching samples into an activator solution, macerating the neutral scorching samples in the activator solution, filtering the macerated scorching samples, and drying the filtered scorching samples; and finally, treating the scorching samples with low temperature plasma under activated gas atmosphere so as to obtain the tobacco activated carbon. According to the method disclosed by the invention, the waste and inferior tobacco in cigarette plants is directly prepared into the high-quality activated carbon, so that the cost of raw materials is low, and the purpose of locally transforming and utilizing the waste and inferior tobacco is realized. In addition, through the treatment of the low temperature plasma and under the joint action of fitting modification conditions, an activator and activated gas, the specific surface area of the tobacco activated carbon is enlarged, and the surface chemistry characteristics of the tobacco activated carbon are enriched.

The invention involves submarine manipulator with clamping and suctioning functions. The manipulator mainly consists of the suction disc, pressure-relieving cushion, supporting rod, clamping fingers, spindle 1, stopper for clamping finger seat, guide bearing, clamp seat, pulling nail, motor, transmission screw, clamping finger seat, spindle 2, spindle 3, clamping finger arm, pressing spring and transmission shaft. The motor spindle is fixed to the transmission screw through pins. The clamp seat and the clamping finger seat are stationary. The motor and the transmission are connected with the pulling nail through a helix trough. One end of the clamping arm is connected to the clamping finger seat through the spindle and can rotate around the central line of the spindle. The other end is connected to the spindle 2 through a sliding trough. The spindle 2 and the transmission spindle are fixed into a whole structure, so the clamping and opening motion of the clamping fingers are realized. The supporting rod is connected to the transmission spindle through the spindle 1, and thus forming a level mechanism. As the transmission spindle reaches a certain position, under the joint action of the extruding block on the supporting rod and the stopper on the clamping finger seat, one end of the supporting rod is lifted. So the negative pressure cavity in the suction disc is depressurized. With this invention, the problem of picking up various kinds of objects with a single mechanism is solved, fully exerting the multi-functions which one single mechanism possesses, characterized by being light in weight, compact, practicability, reliable seal and convenience.

The invention discloses a thermal management method and system for an electric vehicle and the vehicle. The method comprises the following steps that at least one thermal management condition of the vehicle is determined by a thermal management controller according to thermal management request of a power battery and a crew compartment, the thermal management controller controls the correspondingthermal management components to complete the thermal management task of the vehicle in the corresponding thermal management condition according to each thermal management condition, and the thermal management components include a positive temperature coefficient PTC heating assembly, a first air conditioning heat pump assembly and a second air conditioning heat pump assembly. By means of the method, the joint action of the air conditioning heat pump assemblies and the PTC heating assembly is adopted, and different thermal management strategies are determined according to the different thermalmanagement requests of the power battery and the crew compartment, thus heating or cooling needs of the power battery and the crew compartment are met.

The invention belongs to the technical field of strengthening of tooth surfaces of gears, and discloses an ultrasonic strengthening device for gear tooth surfaces of involute cylindrical gears. The ultrasonic deep rolling technology and the involute generation theory are organically combined, and the ultrasonic strengthening device for gear tooth surfaces of involute cylindrical gears comprises an ultrasonic generating device, an L-shaped ultrasonic machining head, a pressure feeding device, a first slide plate, a second slide plate, a base circular plate, a guide scale and a base. The ultrasonic generating device is used for generating high-frequency high-energy vibration. Initial static pressure is regulated by means of adjusting the pressure feeding device, the guide scale drives the base circular plate and a gear to rotate by the aid of friction force, gear teeth of the strengthened gear and the ultrasonic machining head move in a meshed manner, and simultaneously, ultrasonic strengthening of the surface of the strengthened gear is completed by the ultrasonic machining head in a linear contact manner. Ultrasonic strengthening of the integral tooth surface is realized under joint actions of the high-frequency high-energy vibration and the static pressure, a residual stress layer with a certain depth is formed on the gear tooth surface of the strengthened gear, and accordingly purposes of improving stress state of the gear after the gear is ground and prolonging the service life of the gear are achieved.

The invention discloses an experimental device and a method for measuring rock mechanics parameters under action of ultrasonic wave and chemistry. The experimental device comprises a closed box body for placing a rock core to be tested, a rock mechanics testing machine for symmetrically loading the rock core to be tested from a left side and a right side through a left side loading shaft and a right side loading shaft, an ultrasonic transducer, an ultrasonic generator, a hydraumatic pressurizer, a vent valve arranged on the upper part of the closed box body, a pressure measurement unit, an ultrasonic power detector, an ultrasonic amplitude measuring instrument and a display unit. The experimental method comprises the following steps of: 1, preparing an experiment; 2, adding a chemical reagent; 3, carrying out ultrasonic treatment; and 4, booting loading and simultaneously carrying out rock mechanics parameter measurement in a loading process. The experimental device has a reasonable design, is convenient to install and arrange, has complete functions, is simple and convenient to use, has good use effect, and can be used for efficiently and quickly finishing a rock mechanics parameters measuring experiment of the rock core to be tested under the joint action of the ultrasonic wave and the chemical reagent.

The invention discloses a construction method for a rock freeze-thaw damage constitutive model under the action of constant confining pressure. Based on a popularized strain equivalence principle, taking the joint action of two damage factors (freeze-thaw cycle and load) into consideration, the invention proposes an expression of a total damage variable. If the strength of a rock element body is subject to Weibull distribution, on the basis of a D-P failure criterion and geometrical conditions at peak points of a rock stress-strain curve, an expression of a random distribution variable F, a distribution parameter m and F0 is obtained, and a rock freeze-thaw damage constitutive model under the action of constant confining pressure is created. A triaxial compression experiment is carried out on a rock under the action of freeze-thaw cycle, and the experiment verifies the rationality of the model. The method disclosed by the invention is a method combined with theoretical derivation and experimental verification. The theoretical curve of the rock damage constitutive model created by the method is identical with the experimental curve, the mechanical behaviors of a rock under various confining pressures and freeze-thaw cycle numbers can be perfectly reflected, and a theoretical guidance is provided for designs and construction of cold-region projects.

The invention provides a manufacturing method of self-lubricating and self-cooling dry cutter, belonging to the technical field of mechanical cutter manufacturing. A cutter-scrap contact zone on a front cutter face of the cutter is provided with a plurality of miniature antifriction slots filled with solid lubricants, and the solid lubricants in the antifriction slots are coated on the front cutter face of the cutter in a towing way by the jointed action of cutting heat and scrap extrusion to form a continuous solid lubricating film so that the self-lubricating function of the cutter is realized; and a self-circulation cooling cavity is arranged in a cutter body, during cutting processing, a liquid medium in the cooling cavity absorbs heat transferred from the cutting part of the cutter so that the rapid heat radiation and cooling of the cutting part of the cutter can be effectively enhanced, thereby the self-cooling function of the cutter is realized. The cutter can reduce the frication of the cutting part with a workpiece and also lower the cutting temperature so that the friction of the cutter is reduced, the processing quality of the workpiece and the durability of the cutter are improved, and the cutter can be widely applied to dry cutting and cutting of materials difficult to process and realizes clean production.

The invention discloses a heavy-duty tool thermal deformation prediction method taking environmental temperature into account. The method specifically comprises the following steps of predicting the tool thermal deformation caused by the internal heat source of a tool, predicting tool thermal deformation caused by the external heat source of the tool, summing the tool thermal deformation caused by the internal and external heat sources to obtain the final tool thermal deformation. Time-lag thermal deformation error caused by the environmental temperature is taken into account during the prediction of the tool thermal deformation caused by the external heat source of the tool, and multiple regression modelling based on the least square method principle is performed during the prediction of the tool thermal deformation caused by the internal heat source of the tool. The joint action effects reflecting the influence of the environment temperature nonlinear lag and the influence of the internal heat source on the heavy-duty tool are combined by the method, and the thermal deformation error under any environmental condition and processing condition can be effectively predicted in real time.

The invention discloses a system and method for measuring deflection of a bridge structure based on wireless tilt, belonging to the technical field of bridge structure measurement. The invention is characterized in that the system is jointly formed by two wireless tilt sensors, a wireless data unit and a personal computer (PC), wherein the wireless data unit is connected with the PC via a serial port; and each wireless tilt sensor is jointly formed by a micro electro mechanical system (MEMS) technology based tilt unit, a tilt acquisition unit, a wireless transceiving unit and an energy module. The method is characterized by building the bridge deflection curve formula in consideration of the joint action of the deal weight of the bridge structure and the external load, deriving the deflection formula to obtain the tilt formula, computing the unknown parameters according to the actually measured tilt and further obtaining the deflection. The invention overcomes the defects existing in the traditional wired measuring systems and methods, the system has the characteristics of high testing precision, good stability, strong real-time property, accurate computation, etc, and the method is suitable for measuring deflection of similar bridge structures and has good application prospect.

Provided is an image-text displaying intelligentialized fire warning and evacuation indicating system. The image-text displaying intelligentialized fire warning and evacuation indicating system comprises a fire warning control host, a fire detecting unit which is connected with the fire warning control host, a fire warning device, fire-fighting joint action equipment, an evacuation indicating unit, an image-text displaying unit and an voice broadcasting unit. The fire detecting unit detects the happening of a fire, the fire warning device sends warning signals, the fire warning control host confirms the happening location of the fire, and a best evacuation route is formed. The fire-fighting joint action equipment is triggered to put out the fire. The voice broadcasting unit sends a voice warning. The evacuation indicating unit indicates evacuation directions in real time. The image-text displaying unit records and displays in-real-time running state of the system and detailed information of evacuation indication. Due to the fact that the evacuation indicating unit, the image-text displaying unit and the voice broadcasting unit are respectively connected with the fire warning control host, the image-text displaying intelligentialized fire warning and evacuation indicating system is capable of achieving the function of fire warning, evacuation indication, illumination, joint action fire-fighting, voice broadcast and dynamic displaying of the comprehensive running state of the system at the same time.

The invention provides a radio-frequency (RF) power supply device provided with a multi-way output synchronizing signal source, power amplifiers, matchers and discharging electrodes. The output of each matcher is connected and matched with the discharging electrode; the input of each matcher is connected and matched with the output of the power amplifier; the outputs of the multi-way output synchronizing signal source are synchronously amplified by a plurality of ways of power amplifiers under the power supply action of a direct current power source; the RF discharge of a plurality of ways ofdischarging electrodes to gas is carried out under the joint action of a plurality of ways of matchers so that the gas in a plurality of ways of discharging electrodes generates glow. The gas producesplasma, generates laser in a laser resonant cavity and adopts a radio RF motivation mode; the RF electrodes are arranged outside the resonant cavity without contacting with the discharged gas; the RFis from 10 thousand to 3 million MHz; and ionization and discharge are carried out by the isolation of the gas in a glass motivation cavity so as to avoid polluting the resonant cavity and optical devices by the sputtering and the erosion of the electrodes.

The invention relates to a method and system for lowering torque pulsation of a switched reluctance motor by current adaptive control; the method comprises: preprocessing a deviation: subjecting the torque deviation to nonlinear conversion; solving torque estimated output and adaptive PID (proportion integration differentiation) control coefficient by using double-weight neural network; acquiring current set total current by PID control calculation, and acquiring each phase control current via current allocation; predicting current feed-forward compensation control by finite difference extended Kalman filter, and effectively inhibiting and lowering torque pulsation of the switched reluctance motor by joint action of adaptive PID control and prediction-based current feed-forward compensation control. Current, torque and rotor position sensors are connected with a signal processor, the signal processor executes modules of the method, compensated three-phase reference current is output to control a power converter of the motor via a current hysteresis controller, and torque pulsation of the switched reluctance motor is significantly and effective inhibited.

The invention discloses a seawater corrosion-resistant low alloy cast iron, which is mainly used for manufacturing components in seawater hydraulic projects. Adopting the weight percentage as unit, the seawater corrosion-resistant low alloy cast iron comprises 0.6 to 1.6 Ni, 1.5 to 3.0 Cr, 1.8 to 2.8 Si, 2.8 to 3.6 C, 0.6 to 1.0 Mn, 1.5 to 3.0 Cu, 0.1 to 0.3 RE, less than or equal to 0.4 Al, less than or equal to 0.1 Sb, less than or equal to 0.12 P, less than or equal to 0.06 S, and remaining part of Fe. The seawater corrosion-resistant low alloy cast iron has the advantages of improving corrosion resistant performance due to joint action of the cast iron chromium, nickel, copper and other alloy elements, reducing nickel content and cost, and improving corrosion resistant performance of the seawater corrosion-resistant cast iron compared with the Ni-Cr alloy corrosion resistant cast iron.

The invention discloses a spent lead-acid storage battery separating and collecting device and method, which are used for separating a cut upper cover from a battery jar, wherein an upper cover push device is arranged next to a cutting position; a rotating vibration device is arranged below the upper cover push device and comprises a clamping mechanism and a rotating mechanism; the clamping mechanism can be connected to the rotating mechanism along the vertical direction in a reciprocating vibration manner; the bottom of the rotating mechanism is assembled on a horizontal conveyer at the lower part; the rotating mechanism can horizontally move along with the horizontal conveyer along a rack; the rotating vibration device can horizontally move after clamping the battery jar, and then rotates 180 degrees, so that a notch of the battery jar is downward; a pole group and a dilute sulfuric acid solution can be relatively effectively separated by joint action of three modes, namely a horizontal rotating impact, a spring vibration and an air cylinder movement; the spent lead-acid storage battery separating and collecting device is friendly to environment, simple in structure, convenient to operate and easy to control; and a physical separation can be efficiently carried out on cut and separated lead-acid storage battery.

The invention discloses a multi-harmonic-source harmonic contribution quantitative analysis method based on a total-least square method. The multi-harmonic-source harmonic contribution quantitative analysis method includes: selecting harmonic voltage as the index for evaluating harmonic contribution, and determining the joint action of the harmonic source of each node; sectioning measured data according to time, and calculating the harmonic contribution in each time section according to the projection of the harmonic voltage of one harmonic source at one node on the total harmonic voltage at the node; using the total-least square method to solve harmonic impedance and the harmonic voltage, namely background harmonic voltage, of other harmonic sources at the node, and using a singular value decomposition method to obtain the solution of the total-least square method to obtain the quantitative data of each harmonic source at each node at each harmonic time. The multi-harmonic-source harmonic contribution quantitative analysis method has the advantages that the total-least square method is applied to the harmonic quantitative analysis field, the defect that a traditional method only considers variable harmonic voltage measuring errors and does not consider the independent variable harmonic current measuring errors is overcome, and obtained results are accurate.

The invention relates to a processing method of hot wind coupling biodrying for domestic waste, and belongs to the field of processing of domestic waste. The processing method comprises staged heating domestication and hot wind coupling inoculation drying. Staged heating is carried out from 35 DEG C to 50 DEG C for domestication to promote microbial community succession, and high-activity materials are obtained through domestication for 3-4 days. In a process of hot wind coupling inoculation drying, hot wind quantity is regulated according to temperature feedback, the material temperature is maintained in a range of 50-60 DEG C, and the process is stably performed. Through a joint action of heat production through biological fermentation and hot wind, high-speed dehydration of waste is realized, the moisture content of the final waste is reduced to lower than or equal to 25%, and the heat value is increased to 114%. Therefore, the waste is convenient for incineration and resource utilization. According to the method, biodrying is divided into two processes for continuous cooperative operation, and the reaction period is effectively shortened. Efficient heat transmission is conducted through hot wind, and the drying efficiency is greatly increased. The domestication and inoculation processes are simple to operate, the operation cost is low, and the period is short. The method can be taken as an effective approach for drying domestic waste.

The invention belongs to the technical field of lockset and particularly relates to an electric door lock. The electric door lock comprises a side panel (1), a lock box (2), a main bolt (10), a carriage (9), a main bolt shifting fork (8), a latch bolt assembly (12), a lock core (3), a motor (4) and a circuit board (14), wherein the carriage (9) is connected with the main bolt (10); the main bolt shifting fork (8) drives the main bolt (10) to act through the carriage (9); and the rotating action of the lock core (3) or the motor (4) acts on the carriage through the main bolt shifting fork to drive the main bolt (10). The electric door lock is characterized in that: the motor (4) acts on the main bolt shifting fork through a transmission mechanism; and a joint action between the transmission mechanism and the main bolt shifting fork is provided with a free travel, so the lock core pulls the main bolt shifting fork within a free travel action range and the main bolt extends out of the side panel to lock or retracts to the side panel to unlock.

The invention discloses a firework coiling machine. The firework coiling machine comprises a paper feeding mechanism, a paper cutting mechanism, a coating mechanism, a coiling mechanism, a drum cutting mechanism and a drum receding mechanism, all of which are sequentially arranged on a rack. The firework coiling machine is characterized by further comprising a paper heating mechanism and a paper shaping mechanism, the paper heating mechanism is arranged at the front end of the paper feeding mechanism and comprises a driver with a heat source, and coiling paper is heated when conveyed to the paper feeding mechanism through the driver; and the paper shaping mechanism comprises an extrusion component and an extrusion face corresponding to the extraction component, the extrusion component moves towards the extrusion face, and the running coiling paper is shaped into an arc through the joint action of the extrusion component and the extrusion face. The firework coiling machine is simple in structure and convenient to use, the phenomenon of seam slippage of a paper drum is eradicated through the produced firework paper drum, the water content is extremely low, the production efficiency is improved, and the production cost is saved.

The invention relates to a down-hole rotary impact type drilling tool. The drilling tool is characterized in that an overflowing sleeve (1), an upper transmission spindle (6), a splined hub (8), an impact bearing seat (16) and a lower transmission spindle (22) are sequentially installed in a casing; an upper TC transverse bearing (4) and a rolling ball bearing pack (5) are sequentially installed outside the upper transmission spindle (6); a belleville spring (10), a vibration sleeve (12), a vibration starting seat (13), an impact heat (15), a PDC bearing (18), a lower TC transverse bearing moving ring (19) and a lower TC transverse bearing static ring (20) are sequentially mounted outside the impact bearing seat (16) and the lower transmission spindle (22); the impact heat (15) and the impact bearing seat (16) are connected through a flat key, the lower end face of the vibration sleeve (12) is connected with the upper end face of the vibration starting seat (13) through a flat key, and the vibration starting seat (13) is used for generating axial displacement and transmitting the axial displacement to the vibration sleeve (12) and the impact bearing seat (16). According to the down-hole rotary impact type drilling tool, low-amplitude high-frequency impact force is exerted on a drill, so that rock can be broken by the joint action of high-frequency periodical impact force with static-pressure rotation, the rate of penetration of hard stratums is effectively increased, drilling costs are reduced, and comprehensive technological and economic benefits of the drilling engineering are improved.