82results about How to "Optimize and adjust the structure" patented technology

The invention discloses a dynamic performance testing system, which is used for testing dynamic performance of an anchor rod or an anchor cable and comprises a main unit and a testing control device. The main unit comprises a vertical framework, a clamping device, a hammer dropping device, a lifting device and a protection device, wherein the clamping device is arranged on the top of the vertical framework and used for clamping the top end of a sample perpendicularly, the bottom end of the sample is provided with a tray, the hammer dropping device is used for dropping a hammer from a set height of the vertical framework to impact the tray, the lifting device is used for lifting the hammer dropping device at the bottom of the vertical framework to a set height, the protection device is used for physical protection and isolation so as to reduce personal harms and noise. The testing control device is used for controlling parameter selection, lifting and dropping of hammer dropping of the hammer dropping device, analyzes real-time impact data sensed by a force sensor of the tray when the hammer drops perpendicularly from the force sensor and outputs testing results. The dynamic performance testing system has advantages of universality and accurate and reliable testing results.

The invention discloses a pure remote sensing data driven drainage basin water circulation simulation method, comprising the following steps: building a drainage basin water circulation simulation framework including a vegetation interception and evapotranspiration process, a runoff production process and a runoff concentration process and compatible with spatial information; completing the simulation of drainage basin runoff production and concentration processes entirely based on remote sensing data, and getting the background values of total runoff yield and runoff volume of any grid point in a drainage basin; and adding a model parameter self-optimization module, constructing an objective function, carrying out random sampling to generate a simulation parameter sample combination to be calibrated, introducing a model for iterative operation, and determining eligible drainage basin water circulation simulation parameters and runoff production and concentration simulation results. The dependence on the observation data of a traditional meteorological site is reduced effectively, the spatio-temporal continuity and spatial heterogeneity of water circulation are better reflected, and the physical mechanism and multi-source data compatibility of the method are enhanced.

Provided is a connection adapter that is capable of constituting an optical tomographic imaging apparatus having a small installation space and high use efficiency. A connection adapter is disposed between the fundus camera main body portion and a camera portion to be attached to the fundus camera main body portion for imaging a surface image of a fundus as an object in an optical tomographic imaging apparatus, and connects them in a detachable manner. The connection adapter includes: a first light guide unit for guiding tomographic image measuring beams guided from the fundus camera main body portion for imaging the tomographic image to a tomographic imaging portion; and a second light guide unit for guiding fundus image measuring beams guided from the fundus camera main body portion for imaging the surface image of the fundus to the camera portion.

The invention discloses a urea crystallization detecting and testing method of an SCR tail gas treatment system of an engine. The method includes the steps of firstly, acquiring the weight M1 of an exhaust treatment device (5) before a test; secondly, in a testing cycle, allowing the engine to work and be tested under preset testing conditions, namely controlling the jet flow of a urea nozzle (4) to be a preset value or in a preset range A, controlling the exhaust flow of an exhaust pipe (2) of the engine to be a preset value or in a preset range B, and controlling the temperature in the exhaust treatment device to be a preset value or in a preset range C; thirdly, acquiring the weight M2 of the exhaust treatment device after the test, subtracting M1 from M2 to obtain the increased weight D of the exhaust treatment device in the testing cycle; fourthly, determining the urea crystal weight M in the exhaust treatment device under the preset testing conditions according to increased weight D of the exhaust treatment device. By the detecting and testing method, urea crystal amount can be tested and detected to serve as reference for judging adaptability of the SCR tail gas treatment system, and corresponding adjustment can be performed.

The invention discloses a trithiocarbonate compound containing ethylene, which is the compound with a structure in the formula I or II, and the ethylene is positioned between the hydrophilic chain segment and the hydrophobic chain segment of the compound. The invention further discloses a preparation method of the trithiocarbonate compound containing the ethylene, under the action of a radical initiator, the compound with the structure in the formula III or VI is firstly reacted with a water-soluble monomer with a chain link A or a chain link C, and is secondarily reacted with a monomer containing a diene double linkage, so the compound with the structure in the formula I or II is obtained; and the preparation method has the characteristics of simple preparation, strong operability, good reproducibility and the like. The invention also discloses the application of the trithiocarbonate compound containing the ethylene in preparing polymer microspheres, so the ethylene is gathered at the surfaces of the polymer microspheres.

The invention discloses an ethylenically double bond-containing trithiocarbonate compound with a structure of formula I or formula II, with the ethylenically double bond modified by a hydrophilic segment and an oleophylic segment. The invention also discloses a preparation method of the ethylenically double bond-containing trithiocarbonate compound. The method consists of: under the action of a catalyst, reacting a compound with a structure of formula III or formula V with methoxy polyethylene glycol, then, under the effect of a free radical initiator, reacting the obtained reaction product with a diethylenically double bond-containing monomer, thus obtaining a compound with a structure of formula I or formula II. The preparation method is characterized by simplicity, strong operability, and good repeatability, etc. The invention also discloses application of an ethylenically double bond-containing trithiocarbonate compound in preparing polymer microspheres, so that ethylenically double bonds can be enriched on the surface of a polymer microsphere, while a polymer chain within the microphere can still be a linear structure.

The invention discloses a waterborne epoxy fireproof coating as well as a preparation method and application thereof. The waterborne epoxy fireproof coating is composed of a component A and a component B. The component A comprises a waterborne epoxy emulsion, a vinyl-epoxy emulsion, a carbon forming catalyst, a carbon forming agent, a foaming agent and a flame retardant; and the component B comprises a curing agent and refractory fibers. The water-based epoxy fireproof coating disclosed by the invention has the same excellent sealing performance as a solvent-free epoxy fireproof coating and a high-solid-content epoxy fireproof coating, has excellent corrosion resistance, UV irradiation resistance, water resistance and organic solvent resistance, and can be used in a severe outdoor environment. According to the fireproof coating, self-made emulsions are preferably selected, the structure of a film forming matter is optimized and adjusted, and fireproof efficiency is high. Meanwhile, water is selected as a diluent, so coating problems of an original epoxy fireproof coating are fundamentally solved, a water-based system is more environmentally friendly, and the coating belongs to a new-generation fireproof coating technology.

The invention discloses a preparation method of a fluorinated organic nanoparticle-containing polyamide solvent-resistant nanofiltration membrane. Polyamine, dopamine and a fluoroalkyl mercaptan compound are used as reactive monomers, fluorinated organic nanoparticles are formed through Michael addition and Schiff base reaction, and then the fluorinated organic nanoparticles and polybasic acyl chloride form the polyamide membrane containing the fluorinated organic nanoparticles on the surface of the porous support membrane through interfacial polymerization reaction. The characteristic of lowsurface energy of the fluorinated organic nanoparticles is utilized, the interface polymerization process is regulated and controlled; the chemical composition, the microstructure and the hydrophilicity and the hydrophobicity of the polyamide separation layer are optimized, the polyamide solvent-resistant nanofiltration membrane having the unique pore channel structure is obtained, the prepared membrane has characteristics of high separation selectivity and high solvent permeation flux, the membrane preparation method is simple, easy to regulate and control, and the good industrial applicationprospect is provided.

The invention discloses a trithiocarbonate compound containing an epoxy group, as shown in formula I. The trithiocarbonate compound containing the epoxy group has an amphiphilic structure of both hydrophilicity and lipophilicity, wherein the epoxy group is between the hydrophilic chain segment and the oleophylic chain segment. The invention also discloses a preparation method for the trithiocarbonate compound containing the epoxy group. The preparation method is simple and practicable. A first step copolymerization is carried out between a compound having a structure of formula II and a water-soluble monomer D in the presence of a radical initiator, and a second step copolymerization is carried out with an epoxy group-containing monomer B and a hydrophobic monomer A, so the compound having the structure of formula I is obtained. The preparation method has the characteristics of simpleness and practicality, mild reaction condition, strong operationality, good reappearance, and the like. The invention further discloses an application of the trithiocarbonate compound containing the epoxy group in preparing polymer microspheres, enabling the epoxy groups to be enriched on surfaces of the polymer microspheres.

The invention discloses a layered rotor structure for a high-speed permanent magnet motor and a manufacturing method. The layered rotor structure comprises a rotor iron core, permanent magnets and a protective sleeve which are sequentially arranged from inside to outside in the radial direction, wherein the outer side of the rotor iron core is sleeved with the permanent magnets, and blocky ferritematerial filling bodies used for reducing deformation stress of the permanent magnets are arranged in gaps formed between adjacent protruding block bodies of the permanent magnets; the protective sleeve comprises an inner carbon fiber layer, a mixed layer, a copper shielding layer and an outer carbon fiber layer which are sequentially arranged from inside to outside in the radial direction; and the mixed layer comprises a carbon fiber pre-winding belt, the carbon fiber pre-winding belt is formed by flattening and bonding a flexible magnetic powder adhesive film on the surface of a carbon fiber belt, and the flexible magnetic powder adhesive film is formed by spraying and curing an adhesive film prefabricated material formed by uniformly mixing bonded permanent magnet magnetic powder and acolloid material. The layered rotor structure effectively reduces rotor eddy current loss and air friction loss, relieves the permanent magnet damage risk caused by too high local stress in the rotor, and enables the high-speed permanent magnet motor to develope towards higher rotating speed and higher power.

The invention discloses a passivating device for machinery manufacturing. The passivating device for machinery manufacturing comprises an operation platform, a support and supporting rods. Flow drainage holes are formed in the operation platform, a passivating liquid box is arranged below the flow drainage holes, and a water pump is installed on the rear side of the passivating liquid box. A connecting pipe is connected to the water pump, spray nozzles are installed on the inner side of the connecting pipe, bent pipes are arranged between the spray nozzles, and side spray nozzles are connectedwith the inner sides of the bent pipes. The support is located on the right side of the operation platform, a sliding groove is formed in the support, and threaded insertion holes are formed in the right side of the sliding groove. A fixing bolt is installed inside one threaded insertion hole, and a supporting rotary ring is connected with the left side of the fixing bolt. The passivating devicefor machinery manufacturing comprises the sliding groove, the threaded insertion holes and the fixing bolt, and therefore machining and passivating can be conveniently conducted on steel plates with different thicknesses, the structure is conveniently adjusted, operation is easy, the convenience of the device is enhanced, and workers conveniently use the device.

The invention relates to an electrode material for an aptamer sensor, the aptamer sensor and a preparation method, and belongs to the technical field of electromechanical sensors. The electrode material for the aptamer sensor is prepared according to a method comprising the following steps: (1) dissolving manganese salt, citrate and cobalt cyanide acid salt into a solvent; carrying out a reactionto obtain a manganese cobalt Prussian blue analogue; (2) roasting the obtained manganese cobalt Prussian blue analogue to obtain the electrode material for the aptamer sensor. The method is simple, high in operability, and low in cost; the prepared electrode material is high in electrochemical activity and high in combination effect with a nucleic acid aptamer material; the aptamer sensor preparedaccording to the method is high in selectivity, stability, repeatability, reproducibility and adaptability, and low in detection limit.

The invention discloses trithio ester compounds containing quantitative sulfate ethyl sulfone group, which are disclosed as Formula I. The compounds have a hydrophilic / oleophylic amphiphilic structure, and the sulfate ethyl sulfone group capable of performing bonding reaction with fibers is positioned between the hydrophilic chain segment and the oleophylic chain segment. The invention also discloses a synthesis method of the trithio ester compounds containing quantitative sulfate ethyl sulfone group, which is simple and easy to implement and has the characteristics of mild conditions, high operability, favorable reproducibility and the like. The compounds are subjected to emulsion polymerization to prepare polymer microspheres, and the polymer microsphere emulsion can obviously enhance the adhesive force of the adhesive for fabrics, so that the fabric pigment can not shed. The trithio ester compounds containing quantitative sulfate ethyl sulfone group, polymer microspheres and method for preparing the polymer microspheres have favorable application prospects.

The invention belongs to the technical field of combination of planting and breeding, and relates to a healthy farming method combining rubber forest planting with Bailian goose breeding. The healthyfarming method combining rubber forest planting with Bailian goose breeding comprises the specific steps of 1, selection of a rubber forest planting mode and planning of a feeding grass planting area;2, construction of breeding area supporting facilities; 3, planning of planting grazing grass and Chinese herbs in a rotation grazing area; 4, breeding management of Bailian geese; 5, disease controland prevention. In the healthy farming method, land resources under the rubber forest are fully utilized to plant feeding grass, the grazing grass and the Chinese herbs are supportively planted in the rotation grazing area, through healthy farming management effectively combining captivity and grazing of the geese at different ages, the recycling agricultural mode that rubber forest underwood planting is combined with healthy Bailian goose breeding is achieved, the agricultural resource utilization rate of the natural rubber planting industry is improved, the benefits of a rubber garden and incomes of rubber farmers are increased, the rubber worker group is stabilized, and sustainable and healthy development of the natural rubber industry is accelerated.

The invention discloses a polysulfone biphenyl sulfonated polyether sulfone, a preparation method thereof and a method for preparing a proton exchange membrane from polysulfone biphenyl sulfonated polyether sulfone. Polysulfone biphenyl sulfonated polyether sulfone is structurally characterized in that a repetitive unit of polysulfone biphenyl sulfonated polyether sulfone contains at least two sulfone groups bridged by biphenyl groups, and sulfonic groups with higher acidity can be introduced into benzene rings connected with the sulfone groups. The obtained polymer has higher molecular weightand good solubility; the preparation process is simple, reaction conditions are easy to control and the method is suitable for industrial production. The proton exchange membrane prepared from polysulfone biphenyl sulfonated polyether sulfone has higher proton conductivity and good fuel cell performance, thereby having potential application prospect.

The invention relates to a large-steric-hindrance ketimine nickel complex shown as a formula (I) and a ligand compound, a preparation method and application thereof. R1, R2, Ar and BAF- are defined inthe specification. The large-steric-hindrance ketimine nickel complex can be used as a catalyst for catalyzing polymerization reaction of lower olefins such as ethylene; the catalyst has high catalytic activity (the activity can reach 1.06*10<8> g.mol<-1>.H<-1>) and high thermal stability, and polyethylene with high molecular weight (the number-average molecular weight can reach 1.23*10<6> g / mol)can be obtained. The large-steric-hindrance nickel catalyst can also be used for copolymerization reaction of ethylene and other polymerizable monomers such as methyl undecylenate and the like to obtain a copolymer with high molecular weight and polar monomer units, and with a relatively high insertion ratio.

The invention relates to a cycloalkane catalytic oxidation method promoted by iron porphyrin. O2 is taken as an oxidant, Co (II) porphyrin and Mn (II) porphyrin are taken as main catalysts, and Fe (II) porphyrin is taken as a cocatalyst to carry out reacting at a temperature of 100-160 DEG C and pressure of 0.8-2.0MPa under a solvent-free condition to realize catalytic oxidation of cycloalkanes. The cycloalkanes mainly comprise cyclopentane, cyclohexane, cycloheptane, cyclooctane and cyclononane, and the corresponding oxidation products mainly comprise cycloalkyl alcohols, cycloalkyl ketones and alkyl diacids. The cycloalkane catalytic oxidation method has the advantages of high selectivity of cyclopentanone, cyclohexanol, cycloheptanone and cyclooctanone, small catalyst consumption and simple operation, and environmental friendliness is achieved by taking clean O2 as the oxidant. The disclosesd cycloalkane catalytic oxidation method promoted by iron porphyrin is a cycloalkane catalytic oxidation method with high product selectivity, simple operation and environmental friendliness.

The present invention discloses a shifting register unit and a drive method thereof, a gate drive circuit and a display device, belonging to the display technology field. The shifting register unit comprises an input module, a pull-up module and N pull-down modules. An ith pull-down module in the N pull-down modules is connected with an ith control signal end in N control signal ends, a third power supply signal end, a pull-up node and an output end. The ith pull-down module can perform noise reduction of the pull-up node and the output end under the control of the ith control signal end, thetiming sequence of control signals output by each control signal end is regulated to perform flexible control of the N pull-down modules so as to ensure the noise reduction performance of the pull-down modules. Besides, the signal ends controlling the modules are mutually independent to allow the structure of each module to facilitate regulation so as to improve the usage flexibility of the shifting register unit.

The invention relates to the technical field of water supply and drainage engineering structures, in particular to a sealed adjustable gate. The sealed adjustable gate comprises a gate plate and guide grooves. Each guide groove comprises a first side plate, a second side plate and a vertical plate located between the two side plates, wherein the first side plate and the second side plate are arranged in parallel at intervals, and a rubber sealing strip is arranged between the second side plate and the gate plate. The ends of the gate plate are located between the first side plates and the second side plates correspondingly to be slidably connected into the corresponding guide grooves. A plurality of sets of guide devices and pushing devices are mounted between the gate plate sand each side plate. Each guide device comprises a guide block located between the gate plate and the corresponding first side plate, wherein the guide block is pushed through the corresponding pushing device mounted on the first side plate to change the distance between the gate plate and the first side plate. According to the sealed adjustable gate, by arranging the guide block and screw structure, the distance between the gate plate and a frame and the attaching tightness between the gate plate and the rubber sealing strips can be conveniently adjusted, the good sealing performance of the gate plate is guaranteed, and the sealed adjustable gate has extremely great promotion value.

The invention discloses a urea crystallization detecting and testing method of an SCR tail gas treatment system of an engine, The method includes the steps of firstly, in a testing cycle, allowing the engine to sequentially and continuously work under various preset testing work conditions; secondly, after the testing cycle, calculating the ratio of the area of urea crystal substances accumulated on the cross section of the atomizer (7) of the SCR tail gas treatment system to the area of the cross section of the atomizer (7) to obtain the blocking area ratio. The method can further include a third step: repeating the first step and the second step to obtain each blocking area ratio of the atomizer (7) in multiple testing cycles. If the blocking area ratio in an optional testing cycle is larger than the preset blocking area ratio standard E, the SCR tail gas treatment system does not meet the requirements, and the mounting structure of the SCR tail gas treatment system needs to be optimized and adjusted.

The invention discloses a combined bone fracture plate for orthopaedic trauma. The combined bone fracture plate comprises two fixing plates; a plurality of attaching grooves are formed in the bottom of each fixing plate in the horizontal direction at equal intervals; three sets of limiting grooves are formed in the top of each fixing plate in the horizontal direction at equal intervals, and sevenlimiting grooves are formed in each set, wherein supporting pieces are embedded in the two sets of limiting grooves in a sliding mode; and a fixing bolt penetrates through the center of the top of each supporting piece in a sliding mode. According to the combined bone fracture plate, through combination blocks and positioning bolts, the multiple fixing plates can be stably connected in cooperationwith connecting grooves in the two sides of the tops of the fixing plates, the structure of the device can be conveniently adjusted according to the body types of patients, the device can meet the actual requirements of the patients with different body types, and the actual using effect of the device is improved; and through a connecting plate and a bottom plate, the connecting plate can be rotationally adjusted with a rotating shaft as the rotating center under the position limitation of limiting rods and sliding grooves.

The invention discloses an interplanting method for semen trichosanthis and oil peonies. The oil peonies are interplanted in planting land of the semen trichosanthis, the semen trichosanthis and the oil peonies are suitable for being planted in sandy loam land blocks which are thick in soil layer, loosened, fertile and good in water draining, and through different growing periods and different mature periods of the semen trichosanthis and the oil peonies, plant species and line spaces are reasonably distributed according to characteristics of the semen trichosanthis and the oil peonies, and the semen trichosanthis and the oil peonies are mutually compensated in height; land space and sunshine are fully used, and the yield-increasing potential of soil is furthest developed; the semen trichosanthis and the oil peonies are reasonably matched, and absorb and utilize nutrients with different levels and species, mural compensation is achieved, the yield-increasing potential of land is fullydeveloped, the balance of an ecological system is kept, the agricultural industry structure can be adjusted, and the larger economic value is created.

The present invention discloses a pig tongue preparation method. Five hundred kilo grams of pig tongue raw material is picked, thawed, put into disks and into a warehouse, then shaved by a slicer, completely thawed, and poured into a rolling and rubbing machine, an ingredient B is added firstly into the rolling and rubbing machine to conduct rolling and rubbing for 1.5 h, then an ingredient A is added into the rolling and rubbing machine to conduct rolling and rubbing for 1 h, 500-600 ml of sorghum wine and 24-26 kg of edible modified starch is added, and the mixture is stirred evenly and the stirring is stopped; and in the assembly line operation processes of the quantitative packing set, the temperature is controlled at 130 DEG C with a vacuum time of 1.5 s, and the mixture is packed and put into a cold storage at a cold storage temperature of -10 DEG C or less, and the pig tongue is put into a warehouse the next day. The prepared finished products are comfortable in mouthfeel after being consumed, fragrant in aroma, unique in flavor, and high in nutritional value, and is also convenient to carry. The pig tongue preparation method facilitates the adjustment of industrial product structure of meat products and is conductive to improve the specific gravity of the manufactured goods. The pig tongue processing levels are improved by new technology and new process, and thus the meat product can more meet the convenient, diversified, and nutritionally balanced needs.

The invention discloses an intelligent chair with a sitting posture mechanical matching and electronic monitoring function, which comprises chair legs, a seat plate and a backrest. The backrest is further provided with a sitting posture detecting component, the sitting posture detecting component comprises two struts, a transmitter and a receiver, the two struts are oppositely arranged and connected to the backrest, a user sits in a space between the two struts, the transmitter is mounted on one of the struts, the receiver is mounted on the other strut, the backrest is connected with a position adjusting component, by the aid of motion of the position adjusting component, the distance from the backrest to the front edge of the seat plate is changed, and the vertical distance from the backrest to the seat plate is also changed. The intelligent chair has the advantages of simple structure, convenience in operation, capability of effectively adjusting sitting postures of the user mechanically and in a monitoring manner, and the like.

The invention discloses an auxiliary fixing device for laryngeal edema needle puncture. The device comprises a chair plate with four groups of supporting legs arranged at the bottom and a main leaningplate arranged on one side of the chair plate, two groups of damping position-limiting grooves are symmetrically formed in the upper surface of the chair plate, air pressure adjusting and supportingcomponents are slidably arranged in the damping position-limiting grooves, height adjusting can be achieved through the air pressure adjusting and supporting components, and the air pressure adjustingand supporting components are arranged on the surface of the chair plate, so that height and position adjusting of the chair plate can be achieved conveniently to be better suitable for different patients to use; by using ergonomic hand supports, and by arranging finger holding-tight grooves, the patients can hold the supporting components tightly to prevent the patients from shaking hands when the patients cannot bear the pain of needle puncture resulting in unnecessary troubles; by arranging a waist supporting structure, not only can the waist of the patient be fitted to conduct adjusting,but also a position-limiting device is arranged to bring a sense of security to the patients. The auxiliary fixing device for laryngeal edema needle puncture has the advantages of being simple in structure, and convenient and practical to use.

The invention discloses a nursing bed. The nursing bed comprises a bed body. The bed body is provided with a fixed part and a movable part. The movable part is arranged on the fixed part in a separable mode. The fixed part is provided with at least one fixing position used for fixing the movable part. Due to the adoption of the scheme and the design of the fixed part and the movable part, the structure which gives users certain movement freedom and is effectively provided with a sickbed and the structure for conveniently adjusting the sickbed are obtained, the technical effect that the users can move a part of the sickbed by themselves and other technical effects are achieved, certain assistance for free movement is given to the users, and the nursing bed is particularly suitable for users of the rehabilitative period or users with available hands.

The invention discloses a rain test system for aviation aircraft testing, and belongs to the technical field of aircraft testing. The rain test system comprises a water supply system, a water distribution system, a spraying system, a rainfall acquisition system and a water return system. The water supply system comprises a first water tank, a water supply pump, an air pressure tank and a metal filter; the water distribution system comprises a first water segregator and a second water segregator; the spraying system comprises a plurality of groups of spraying frames, and the plurality of groups of spraying frames are spliced according to a spraying surface to form the spraying system; the rainfall acquisition system comprises a rainfall sensor, a control cabinet and an upper computer; and the water return system comprises a second water tank, a vertical net basket filter and automatic dosing equipment. A unit modular design is adopted, full coverage of an aviation aircraft rain test can be achieved through splicing of the spraying frames of the spraying system according to the specific appearance of an aviation aircraft, and mounting, dismounting and transportation are easy.

The invention relates to the technical field of production machinery for quilting and embroidering, in particular to a rotary shuttle loom for quilting and embroidering. A needle bar driving mechanism of the rotary shuttle loom comprises a driving shaft, wherein the driving shaft drives a connecting shaft via cams; the connecting shaft is linked with two or more drivers which can move up and down; the drivers are installed on an upright bar; each driver corresponds to a needle bar; the drivers are provided with moving blocks which can move eccentrically; and the moving blocks are provided with clamp slots which can clamp the adaptation parts of the needle bars and drive the needle bars to move up and down. The needle bar driving mechanism also comprises an unlocking mechanism which can drive the clamp slots to be separated from the needle bars, wherein the unlocking mechanism comprises an electromagnet locking head device which is installed uprightly and a transverse propelling device. The needle bar driving mechanism has the following advantages: after the cams are output, the drivers are synchronously driven by the connecting shaft and three-hole connecting bars to move up and down, so the structure is optimized and adjusted and the spatial body is small; the unlocking mechanism has one-to-one relationship with the drivers, so the single needle locking function can be realized in the small needle gauge embroidering process and the production requirement is met; and the needle bar driving mechanism has simple, scientific and reasonable structure.