36results about How to "No support" patented technology

The invention discloses a high-activity titanate nanosheet photocatalytic membrane material, as well as a preparation method and application thereof. The preparation method comprises the following steps: 1) adding a sol containing titanate nanosheets into a culture dish or a filter provided with a microfiltration membrane, and conducting solvent evaporation in the culture dish, or conducting suction filtration on the titanate nanosheets under the condition of pressure reduction in the filter to form a titanate nanosheet membrane; 2) soaking the obtained titanate nanosheet membrane in an acid solution, washing in water, and drying to obtain the titanate nanosheet photocatalytic membrane material which is an unsupported, transparent and flexible photocatalytic membrane. As the prepared titanate nanosheet photocatalytic membrane material is the unsupported, transparent and flexible photocatalytic membrane, under the assistance of hydrogen peroxide, the titanate nanosheet photocatalytic membrane material has quite high activity on photocatalytic degradation of organic pollutants, the preparation method is simple and easy to popularize, and the raw material is low in price, easy to get and beneficial to mass production.

The invention provides a processing-object-supporting mechanism and supporting method for minimizing the configuration space of the supporting mechanism so as to benefit downsizing of the whole processing device and substantially reduce the position offset of the processing object in moving between the carrying arms. Particularly, the processing-object-supporting mechanism is characterized by having N (N is an integer of more than 3) groups of lift pins (38) in contact with the processing object (W) for supporting, a motor (100) making the lift pins (38) to lift, and a unit composed of a drive controller (200) of the drive motor (100). The drive controller (200) of each of the N groups of units is configured to control the motor (100) of each of the unit independently.

The invention provides a high-strength atomization assembly which comprises a support shell, a heating body, a liquid guide body and a cover body, the support shell is provided with a first opening and a second opening, the first opening is communicated with the second opening, at least part of the heating body is embedded into the support shell and combined with the support shell, and a containing bin opened from the first opening is defined by the heating body and the support shell; the liquid guide body is arranged in the accommodating bin; and the cover body is arranged at the first opening so as to limit the liquid guiding body in the containing bin. The invention further provides an atomization device which comprises the atomization assembly. The support shell of the high-strength atomization assembly supports the heating body, the strength of the heating body is greatly improved, and the heating body is not prone to deformation; and the support shell, the heating body and the cover body can well limit the liquid guide body in the containing bin, so that the liquid guide body is in full contact with the heating body.

The invention provides a polytetrafluoroethylene hollow fiber membrane which comprises a polytetrafluoroethylene material body, wherein the polytetrafluoroethylene is fibrous with the fiber diameter of 30-200nm; the body has pore cavities with the pore size of 10-1000nm and cavity walls formed around the pore cavities in the three-dimensional space, and the pore cavities are uniformly distributed and are respectively perforated in the three-dimensional space; and the uniform distribution of the pore cavities refers to uniform distribution of the pore cavities in the porous material in any unit level of volume. The porosity is 70% or above, the light transmittance is 50% or above, the tensile strength is 20 N / mm<2> or above, and the water pressure resistance is 4kg / cm<2> or above. The invention provides a specific and definite measurement mode for uniform distribution of pore cavities of the polytetrafluoroethylene hollow fiber membrane, and determines that the pore distribution uniformity of the porous material and multilevel structure thereof is measured by the small unit level of volume, so the porous structure is highly uniform, thereby ensuring the uniformity of various properties of the porous material.

The invention discloses a method for detecting elements in an alloy. The detecting method comprises the following steps of detecting the content of impurity elements by determining the light intensity ratio through a spectrograph; selecting a standard sample the content of which is closest to the to-be-controlled content numerical value of to-be-determined elements in the alloy; selecting, determining and analyzing a base body, inputting the content of the standard sample into the spectrograph, and setting stimulating parameters; acquiring calculating data, and stimulating the standard sample so as to obtain the light intensity ratio of the standard sample; stimulating a sample sent for detection so as to obtain the light intensity ratio of the sample sent for detection; and comparing the light intensity ratios of the standard sample and the sample sent for detection so as to obtain the detection result. The method provided by the invention is used for detecting the content of the elements in the alloy rapidly and qualitatively, and is especially suitable for on-line detection in a production field.

The invention relates to a support-free prefabricated floor slab with brackets, and belongs to the field of building structural members. According to the scheme, the support-free prefabricated floor slab is composed of a prefabricated concrete floor slab and a plurality of steel brackets, wherein the plurality of steel brackets are locally embedded in the side wall of the floor slab in the span direction; the steel brackets are composed of vertical steel plates, horizontal steel plates and a plurality of shear resistant pieces; and the parts, which are embedded in the floor slab, of the vertical steel plates and the shear resistant pieces form a fishbone structure, and the bottoms of the parts, which extend out of the floor slab, of the vertical steel plates are connected with the horizontal steel plates. According to the support-free prefabricated floor slab, the steel brackets are arranged on both sides of the concrete prefabricated floor slab, the steel brackets are supported on structural beams or walls through the horizontal steel plates of the steel brackets in the construction process of the floor slab, and the connecting performance of the steel brackets and concrete is improved through the fishbone structure anchored in the floor slab, so that load in the construction stage and the dead weight of the floor slab are transmitted to structural members such as beams and walls through the steel brackets, and the purpose that the lower part of the prefabricated floor slab is free of supporting is achieved. No support needs to be arranged below the floor slab, so that the construction efficiency is improved, and the construction cost is reduced; and the members have the advantages of the simple structure, easiness in production and convenience in installation.

The invention discloses a hub magnetic suspension supporting driven electric automobile, which comprises front and rear hub bearing-free motor supporting driving systems and a detection and control system for detecting and controlling bearing-free motors in the front and rear hub bearing-free motor supporting driving systems. The front and rear hub bearing-free motor supporting driving systems respectively comprise a supporting shaft (6), and the supporting shaft is fixed on a frame (8); and a wheel hub (5), a radial bearing-free motor (1), a speed adjusting clutch (2) and an axial bearing-free motor are symmetrically arranged at two ends of the supporting shaft. Through the hub magnetic suspension supporting driven electric automobile, no friction and no abrasion support between the wheel hub and the frame is realized by a magnetic suspension technology; and the wheel hub is directly driven to rotate by electromagnetic torque, so that a transmission chain is shortened, the driving efficiency is improved, the energy consumption is remarkably reduced, and the power performance of the electric automobile is improved.

The invention provides a polytetrafluoroethylene fiber membrane. The polytetrafluoroethylene fiber membrane comprises a polytetrafluoroethylene material main body. Polytetrafluoroethylene is in a form of fibers, the fiber diameter is in a range of 30-200 nm, the main body has hole cavities having hole diameters of 10-1000 nm and cavity walls formed from 3D spaces around the hole cavities, the hole cavities are uniformly distributed in the porous material in any unit volume and are communicated in a way of 3D communication, porosity is 70% or more, light transmittance is 50% or more, tensile strength is 20 N / mm<2> or more and water pressure resistance of 4 kg / cm<2> or more. The technical scheme provides a clear measurement method of uniform distribution of hole cavities of the polytetrafluoroethylene fiber membrane and realizes measurement of the porous material in a small unit volume scale and hole distribution uniformity of the multi-grade structure. The porous structure is highly uniform and ensures uniformity consistency of performances of the porous material.

The invention provides a full-simulation power-amplification driving circuit.The full-simulation power-amplification driving circuit comprises an input stage unit, an excitation stage unit and an output stage unit, wherein the input stage unit, the excitation stage unit and the output stage unit are sequentially connected.Current signals are input from the input stage unit, pass through the excitation stage unit and are output through the output stage unit; the input stage unit buffers the current signals in the circuit, improves the stability of the circuit and reduces noise; the excitation stage unit provides excitation currents and static bias voltage for an output stage; the output stage unit amplifies the electric currents, provides the excitation currents for the gate of an IGBT and guarantees the opening response speed and the electromagnetic compatibility characteristic of the IGBT.By means of the full-simulation power-amplification driving circuit, the function of high-speed and high-power operational amplifier is effectively achieved; the circuit is formed in the mode that simplest full-simulation electronic components are skillfully lapped, the use ration of the power supply voltage of the device is greatly increased, and meanwhile the electromagnetic disturbance EMC problem of the IGBT in the high-frequency PWM environment can be solved; cost is low, and supporting of software is avoided; production of a thick film circuit or a special chip is convenient.

The invention relates to a quickly-assembled concrete-filled steel tube laminated shear wall staircase and an installation method, and belongs to the technical field of house construction. The staircase comprises laminated shear walls, combined stairs, T-shaped cover plates and frame beams, wherein the combined stairs are sequentially connected between the two laminated shear walls on the opposite sides from bottom to top, one ends of the combined stairs are connected to floor plates through the frame beams, the other ends of the combined stairs are connected with the laminated shear walls through connecting pieces, and the T-shaped cover plates are arranged between the combined stairs. The staircase is constructed in advance at the speed of not less than one floor before the main body structure, vertical traffic is realized before house construction, the problem that staircase construction and floor construction are not synchronous at present is solved, the working efficiency is high, and meanwhile, the problems that the concrete staircase construction is slow and the pollution is serious are avoided.

The invention relates to a graphene airgel-supported nano-metal or metal alloy catalyst and a preparation method thereof, which belongs to the field of nano-material application and catalytic technology, and is characterized in that: graphene oxide and metal compounds are used as precursors, and a continuous reduction method is adopted , to obtain small-sized nano-metal and nano-metal alloy particles loaded three-dimensional porous graphene airgel catalyst. In the catalyst, the types of nano-metals and nano-metal alloys are selected from: Pt, Au, Ag, Pd, Ru, Rh, Pb, Fe, Co, Ni, Ir, Cu, etc.; the types and proportions can be arbitrarily matched. The size of the nanoparticles is about 2-6 nm, and they are evenly distributed on the graphene sheet. At the same time, graphene is assembled into a three-dimensional porous airgel structure with an average pore size of 1-2 microns, which can have a high specific surface area, high electron transport and mass transport rate, and prevent the agglomeration of graphene and nanoparticles. The composite material has excellent catalytic performance, and the components of the catalyst can be selected according to different needs.

The invention relates to a low-energy-consumption insulator box and an electric tar-catching device. The insulator box adopts a combining mode of four types of devices, namely a silica-gel insulator section, a vertical type ceramic insulator section, a labyrinth type ionization section and a cover type blocking ionization section; a suspending point is arranged at the top part of an inner cavity of the silica-gel insulator section, silica-gel insulators connected in series are suspended on the suspending point, and the lower ends of the silica-gel insulators extend downwards and penetrate through pulling rods of inner cavities of the vertical type ceramic insulator section, the labyrinth type ionization section and the cover type blocking ionization section. The low-energy-consumption insulator box and the electric tar-catching device have the advantages that the electric-catching insulation breakdown caused by aggregation of steam, impurities and the like in an electric-catching insulation box is avoided fundamentally, further continuous heating and nitrogen protection in electric-catching operation are further eliminated; the consumption of auxiliary energy such as the steam, power and nitrogen is greatly and fundamentally reduced, the use cost is reduced, the energy consumption can be reduced to below 1% of the prior art; simultaneously, by improvement on corona wires, the use period of electric catching is prolonged; the promotion value and the economic benefit are good.

The invention relates to a main body backpack type umbrella, comprising an umbrella cover, an umbrella pole and an umbrella handle. The main body backpack type umbrella is characterized in that a clamping device is arranged on the umbrella pole; the umbrella handle is provided with a belt; one end of the belt is fixed on the umbrella handle, and the other end is provided with a chuck which is matched with the clamping device on the umbrella pole for clamping; and the length of the belt can be adjusted. The main body backpack umbrella has the advantages of simple structure, no need of hands for opening, flexible use and good use performance.

The invention discloses a multifunctional mop rack, including a water collecting tank and a support frame. An upper end of a water collecting tank is connected with the support frame. At that middle of the inn bottom surface of the catchment tank, a catchment tank is arranged, A filter plate is arranged in the water collecting tank, An upper end of that side wall of the water collecting tank is provide with a fixing groove, the filter plate is matched with the fixing groove, The bottom of the catchment tank is provided with a drain pipe, the drain pipe is communicated with the water collectingtank, The interior of the catchment tank is provided with drainage boards on both sides, The drainage plate is connected with the side wall of the water collecting tank, the upper end of the drainageplate is provided with a water removing device, the water removing device is connected with the water collecting tank, the upper end of the side tank plate of the water collecting tank is provided with a mounting plate, the mounting plate is provided with a faucet, the faucet is positioned above the filter plate, and the two ends of the water collecting tank are provided with a moving device. Thewhole device integrates the functions of rinsing, dewatering, hanging and the like, and adds the functions of the mop frame, so that the water flow on the mop can be easily pushed out through the dewatering device instead of the manual water twisting, so as to be more hygienic and protect the hands.

The invention relates to a method and device for manufacturing a carbon fiber reinforced resin matrix composite material current heating LOM, wherein a prepreg tape of the carbon fiber reinforced resin-based composite material is conveyed to the upper part of a working platform, the working platform is moved upward to fit the prepreg tape, a pressing plate mechanism moves downwards to press the prepreg tape on the working platform, at the same time, the electrodes at both ends of the pressing plate are powered on the prepreg tape of a pressing area, the pressing plate mechanism is moved upwardaway from the prepreg tape after the prepreg tape is heated and solidified, a laser emitter cuts the prepreg tape along the cross-section of the three-dimensional model, the outer part of the cross-section is cut into fine pieces, and after the cutting is finished, the working platform descends off the prepreg tape, and then the whole prepreg tape is conveyed to the upper part of the working platform, the residual prepreg tape is retracted by a winding drum after being cut, that is, the single-layer forming and solidifying is completed, a process is recycled until the forming and solidifyingof the whole three-dimensional solid component is completed, that is, the required three-dimensional solid component is obtained; the forming mode is rapid and unsupported; the solidifying technologyis low in consumption and energy-saving.

The invention relates to a moving bed, having a fixed bed part (3) as a recumbent region for the head and upper body of a person (29) and a longitudinally movable bed part as a recumbent region for the buttocks and legs of a person (29). According to the invention, the bed (1) has a first bed frame, as a stationary fixed frame (2), which extends, as a stationary long frame, over the entire length of the bed and is formed on the top, fixed bed part (3). The bed (1) has a second bed frame as a travel frame (9), by means of which second bed frame the lower, longitudinally movable bed part is formed, such that the travel frame (9) is held on the fixed frame (2) in a longitudinally movable manner, and at least one controllable motor drive (17) is attached between the fixed frame (2) and the travel frame (9), by means of which controllable motor drive the travel frame (9) is movable back and forth in alternation, relative to the fixed frame (2), in a predefined longitudinal section.

The invention relates to a steel structure temporary fixing device and technology used for splicing of a large-size capping beam cantilever. The device is characterized in that the steel structure temporary fixing device is a cuboid steel structure member spliced by several steel plates, a lifting lug is arranged on the top of the cuboid steel structure member, and a precise rolling threaded anchoring plate is arranged on the front side wall of the cuboid steel structure member; a horizontal stiffening plate is arranged at the bottom of the precise rolling threaded anchoring plate, a verticalstiffening plate is arranged on the back side wall of the cuboid steel structure member, and a left side otic placode is arranged on the left side of the cuboid steel structure member; a pin rod fixedhole is formed in one end portion of the left side otic placode, a right side otic placode is arranged on the right side of the cuboid steel structure member, and a pin rod fixed hole is also formedin one end portion of the right side otic placode; the steel structure temporary fixing device is fixed to a capping beam through the pin rod fixed holes in the left side otic placode and the right side otic placode and special pin rods. The device and technology achieve the target of no supporting and no cast-in-place of a super-wide large-scale capping beam, construction is simple, the effect issignificant, and the construction period is greatly shortened.

The invention discloses a planar metal low-temperature heating device and a fabrication process, and relates to the technical field of low-temperature heating cigarette. The planar metal low-temperature heating device comprises an external protection enamel layer, a metal support sheet layer, an insulation dielectric layer, a support layer and a metal heating track layer, wherein the insulation dielectric layer is coated on an outer surface of the metal support sheet layer, the metal heating track layer is embedded into the support layer, the metal heating track layer and the support layer form a filling layer, the filling layer is attached onto an upper surface of the insulation dielectric layer, the filling layer and the insulation dielectric layer are wrapped by the external protectionenamel, two ends of the metal heating track layer extends out of the external protection enamel layer, and the two ends of the metal heating track layer are respectively connected with a positive electrode and a negative electrode of a power supply. The planar metal low-temperature heating device has the beneficial effects that a metal material is used as a support body, the planar metal low-temperature heating device is good in flexibility, and the problem of circuit breakage caused by slight bending is prevented.

The invention discloses a spinning bobbin replacement device capable of avoiding shutdown and a replacement method of the spinning bobbin replacement device, and relates to the technical field of textile machinery. The problem that when a textile machine works, spinning threads on a spinning cylinder are used up and replaced, shutdown is needed is solved. The device comprises a working rack and a spinning bobbin, a hydraulic cylinder is fixedly connected to the inner wall of the bottom end of the working rack, and the method comprises the specific steps that spinning threads on the spinning bobbin penetrate through the corresponding limiting circular rings and are placed on the supporting rollers, and water is sprayed to the spinning threads on the supporting rollers. According to the monitoring mechanism, whether spinning threads on the spinning bobbins are about to be used up or not is detected through the outer diameters of the spinning threads around the spinning bobbins, when the spinning threads are about to be used up, the hydraulic cylinder descends the supporting connecting plate, the electric sliding plate moves in the electric guide rail, the next spinning bobbin is placed below the working position, spinning operation in the whole process is not stopped, the spinning efficiency is guaranteed, and the working efficiency is improved. Meanwhile, the labor intensity of workers is reduced, and the practicability of the device is improved.

The invention discloses a vibration asymmetric distribution type granule conveying five-axis support removing printer which comprises a printer base, a hollow guide stand column with a rectangular section is vertically connected to the printer base, a Z-direction feeding system is connected into the guide stand column, a supporting plate is vertically connected to the guide stand column, and the supporting plate is connected with the Z-direction feeding system. A vibration discharging unit is connected to the supporting plate, an X-direction feeding system is connected to the position, below the supporting plate, of the printer base, a Y-direction feeding system is connected to the X-direction feeding system, a movable sliding bed is slidably connected to the Y-direction feeding system, a rotary table base is connected to the movable sliding bed, and a rotary table main rotating shaft parallel to the printer base is connected to the rotary table base. The rotary table main rotating shaft is connected with a rotary printing table capable of rotating in a plane. The Z-direction feeding system, the vibration discharging unit, the X-direction feeding system, the Y-direction feeding system, the rotary table base and the rotary printing table are all connected with a control system. A supporting structure is not needed in the printing process, and the printing quality can be improved.

The invention discloses an acceleration sensing verification device based on an air capacitance electric field effect. The acceleration sensing verification device comprises a shell base, a sealing cover, a sealing gasket, an upper inflating valve, a lower inflating valve, a capacitance measurement substrate and a structural plate capacitor, the shell base is a cuboid, a cuboid cavity is formed in the shell base, and one side face of the cuboid cavity is open; the sealing washer is clamped between the open side face of the shell base and the sealing cover. the shell base, the sealing washer and the sealing cover are fixed through a plurality of rivets, the cuboid cavity is sealed, and the cuboid cavity is filled with medium gas; a capacitance measuring substrate is arranged in the shell base, and a plurality of structural plate capacitors are arranged on the capacitance measuring substrate; and the upper inflating valve and the lower inflating valve are installed on the upper side face and the lower side face of the shell base respectively and used for replacing gas in the shell base. The device provided by the invention is compact in structure and scientific and reasonable in design, can be applied to verification and measurement of the acceleration characteristic of the air capacitor, and can verify the acceleration of the measured measurement platform more accurately in real time.

The invention relates to a detection load device management system for an autonomous submersible and method. A low-power consumption main controller is connected with the detection device through a serial communication interface, full-duplex serial communication is carried out, the serial port data of the device are acquired, data exchange is carried out with an autopilot unit through a CAN bus, and the detection device is controlled according to the command of the autopilot unit; and the low-power consumption main controller is connected with an upper computer through a network interface andcommunicates with the upper computer. The power consumption is low, the development cycle is short, program updating is convenient, and functions are rich; in comparison with embedded chips such as 51and AVR, tan STM32 series have richer peripheral circuits, more interfaces, and stronger configurability, and acquisition, processing, storage and uploading of data do not need an additional interface expansion circuit or use an embedded computer for processing; and the unit mentioned above can perform the above processing well and completely and does not require a complicated peripheral circuitsupport.

The invention provides an eye binding dressing and a manufacturing method thereof, and belongs to the technical field of medical dressings. The eye binding dressing comprises a dressing body, and thedressing body comprises a protective layer, an adsorption layer, a dressing core support layer arranged on the middle portion of the dressing body and a release paper layer, wherein the protective layer, the adsorption layer, the dressing core support layer and the release paper layer are sequentially attached. The protective layer is made of non-woven fabric or medicated plaster cloth, the dressing core support layer comprises a top face attached with the adsorption layer and a bottom face which is in contact with the release paper layer, and the middle portion of the bottom face is sunken tothe top face. The manufacturing method of the eye binding dressing comprises the following steps that step1, the adsorption layer is manufactured; step 2, the protective layer and the adsorption layer are compounded; step 3, the dressing core support layer is prepared; step 4, attaching is performed, specifically, the dressing core support layer is attached with a base layer, and the release paper layer is attached finally. The eye binding dressing is breathable, moisture-permeable and infection-proof, simple and hygienic in bandage, good in recovery effect and comfort, perfect in attaching,anti-allergy and long in expiration date.

The invention relates to a method and device for manufacturing a carbon fiber reinforced resin matrix composite material current heating LOM, wherein a prepreg tape of the carbon fiber reinforced resin-based composite material is conveyed to the upper part of a working platform, the working platform is moved upward to fit the prepreg tape, a pressing plate mechanism moves downwards to press the prepreg tape on the working platform, at the same time, the electrodes at both ends of the pressing plate are powered on the prepreg tape of a pressing area, the pressing plate mechanism is moved upwardaway from the prepreg tape after the prepreg tape is heated and solidified, a laser emitter cuts the prepreg tape along the cross-section of the three-dimensional model, the outer part of the cross-section is cut into fine pieces, and after the cutting is finished, the working platform descends off the prepreg tape, and then the whole prepreg tape is conveyed to the upper part of the working platform, the residual prepreg tape is retracted by a winding drum after being cut, that is, the single-layer forming and solidifying is completed, a process is recycled until the forming and solidifyingof the whole three-dimensional solid component is completed, that is, the required three-dimensional solid component is obtained; the forming mode is rapid and unsupported; the solidifying technologyis low in consumption and energy-saving.

The invention provides a reference voltage curve acquisition method based on a full analog circuit, by determining the working principle of the reference voltage curve and the full analog circuit for testing; according to the working principle of the reference voltage curve, the reference voltage curve is sequenced in the full analog circuit Control; control the voltage and slope of the reference voltage curve in the full analog circuit; combine timing control, high-power charge and discharge control and voltage interval identification control to obtain the reference voltage curve. The method proposed by the invention is simple and efficient, overcomes the bottleneck problem of the highest rate, improves the EMC performance of the circuit, and cleverly designs an accurate voltage reference curve with the least electronic components.

Provided is a polytetrafluoroethylene fiber tubular membrane, comprising a polytetrafluoroethylene material body; the polytetrafluoroethylene has a fiber shape and the fiber has a diameter of 30-200 nm; the body has pore cavities of a pore diameter of 10-1000 nm and cavity walls formed by three-dimensional spaces surrounding the pore cavities; the pore cavities are uniformly distributed and each pore cavity is three-dimensionally open; the pore cavities being uniformly distributed means that the pore cavities are uniformly distributed over any unit volume on the porous material, the porosity is 65% or higher, and the light transmittance is 45% or higher.

The invention relates to a low-energy-consumption insulator box and an electric tar-catching device. The insulator box adopts a combining mode of four types of devices, namely a silica-gel insulator section, a vertical type ceramic insulator section, a labyrinth type ionization section and a cover type blocking ionization section; a suspending point is arranged at the top part of an inner cavity of the silica-gel insulator section, silica-gel insulators connected in series are suspended on the suspending point, and the lower ends of the silica-gel insulators extend downwards and penetrate through pulling rods of inner cavities of the vertical type ceramic insulator section, the labyrinth type ionization section and the cover type blocking ionization section. The low-energy-consumption insulator box and the electric tar-catching device have the advantages that the electric-catching insulation breakdown caused by aggregation of steam, impurities and the like in an electric-catching insulation box is avoided fundamentally, further continuous heating and nitrogen protection in electric-catching operation are further eliminated; the consumption of auxiliary energy such as the steam, power and nitrogen is greatly and fundamentally reduced, the use cost is reduced, the energy consumption can be reduced to below 1% of the prior art; simultaneously, by improvement on corona wires, the use period of electric catching is prolonged; the promotion value and the economic benefit are good.