42results about How to "Adjust the size" patented technology

The invention relates to a method for preparing copper-titanium dioxide core-shell nanoparticles. In the method, cupric ions provided by cuprous chloride are dissolved into ammonia water; an aqueous solution of polyethylene glycol, an aqueous solution of sodium citrate, an aqueous solution of ascorbic acid, a solution of tetrabutyl titanate (absolute ethyl alcohol) and urea are sequentially addedinto the ammonia water; the ammonia water is put into a teflon-lined stainless steel autoclave after the ammonia water is stirred at room temperature; and the nearly-spherical core-shell nanoparticles are prepared through controlling the temperature and the time for the thermal reaction of the mixed solvents. In the method for preparing the copper-titanium dioxide core-shell nanoparticles, the ascorbic acid serves as a reducing agent and is used for reducing the cuprous ions; and the polyethylene glycol serves as a soft template. The method for preparing the copper-titanium dioxide core-shellnanoparticles has the advantages of simple process, environment-friendliness, low cost and the like; the outer layer of each of the prepared copper-titanium dioxide core-shell nanoparticles is anatase titanium dioxide, and the inner layer of each of the prepared copper-titanium dioxide core-shell nanoparticles is cubic-phase copper elementary substance; and the size distribution is even, and the particle size is controllable, thus the copper-titanium dioxide core-shell nanoparticles can be used as the electrode materials and the photocatalyst materials of dye-sensitized solar cells.

The invention discloses a method for controlling light wavelength of full-inorganic perovskite quantum dots. PbBr2 and octadecene are mixed and a mixed solution I is obtained; oleylamine and oleic acid are added to the mixed solution I in an inert environment, and a mixed solution II is obtained; the reaction temperature is increased to 120-160 DEG C, a caesium precursor solution is quickly added to the mixed solution II, the temperature is kept for 5 s, quantum dots are dispersed in a solvent, and a CsPbBr3 quantum dot solution is obtained; the CsPbBr3 quantum dot solution is dropped and applied to a silicon substrate cleaned in advance, and a film sample is formed; the film sample is placed in a vacuum device to be heated, and the light wavelength of full-inorganic perovskite quantum dots is controlled. The method is simple to operate, the size of the CsPbBr3 quantum dots can be changed after heat treatment, and the light wavelength is adjustable.

The invention relates to the technical field of mechanical manufacturing simulation experiment devices, and specifically relates to an adjustable multi-gap gear-connecting rod mechanism dynamics experiment simulation system. The system comprises a base. The system is characterized in that a gear rotor assembly and a crank sliding block assembly are arranged above the base, and the gear rotor assembly is composed of a driving gear, a driven gear, a driving motor and a driven gear fine adjustment platform. Front-back and left-right displacement of the driven gear is adjusted through the driven gear fine adjustment platform. Therefore, the gear backlash between the driven gear and the driving gear is adjusted. A slider-crank assembly is arranged on the side surface of the driven gear. The crank sliding block assembly is composed of a connecting rod, a sliding block and a gap adjusting sliding rail. The size of the sliding pair gap can be adjusted by adjusting the gap of the gap adjustingguide rail, and the beneficial effects are that the structure is simple, and the gear pair tooth side gap, the rotating pair radial gap and the sliding pair gap can be accurately adjusted at the sametime conveniently and rapidly are achieved.

The disclosed direct-coupled triangular-substrate integrated waveguide cavity filter comprises: some isosceles triangular cavities to form regular polygon with any two near cavities as the initial and final cavity respectively; the inlet and outlet ports on cavity, the coupling window between the initial / final initial cavity and near one, and the cavities set between the initial and final cavities. This invention has well property beyond the pass band, and well square coefficient and selectivity on transfer parameters.

A ring type of bridge with waveguide integrated by H numbers of substrate is prepared as forming a ring waveguide structure by metalized through-holes being arranged in coaxial circle way, setting same-phase input end and reverse-phase input end as well as two output ends on ring waveguide structure, arranging metalized through-holes on media substrate coated with metal foil on both surfaces, enabling to use SIW as lead out arm of port for connecting said bridge to SIW components such as SIW antenna.

The invention discloses a preparation method of a nano-porous palladium-based amorphous alloy, the atomic expression of the amorphous alloy is Pd (40 + x / 2) Ni (40 + x / 2) P (20-x), the x ranges from 2.5 to 3.5; a Pd-Ni-P amorphous / crystalline composite material is firstly prepared through a phase change and partial crystallization method; a selective corrosion method combining acid solution soaking with drying is repeatedly used to remove a part of a crystalline phase, so that the porous amorphous alloy with nano-scale distribution is obtained. The full amorphous structure of the nano-porous Pd-Ni-P metal glass is verified by testing means of a scanning electron microscope, a transmission electron microscope and a selective electron diffraction pattern and is shown by an image of a scanning electron microscope, and nanopores are distributed in the metal glass, wherein the size range of the nanopores is 40-100 nm, and the nanopores are connected in a penetrating mode.

The invention relates to a small block model pressing equipment for simulating a rock mass structure, and belongs to the technical field of a geomechnical model test. the equipment comprises a frame base, and a small block mold, an upper mold ejection block, a push-pull cover board, a pressure lever and a range draw bar which are fixed on the frame base; the small block mold and the push-pull cover board are arranged at the upper surface of the frame base; the upper mold ejection block is arranged at the lower part of the small block mold; the upper end surface of the upper mold ejection block is inserted into a cavity of the small block mold for simulating a rock mass; and the range draw bar is arranged at one end of the pressure lever. By adopting the small block model pressing equipment, the fabrication speed of a small block model can be greatly fastened; the quality of the small block model is improved; manpower and material resources are saved; meanwhile, the size, the shape and the height of a small block can be adjusted according to the requirements; and the smooth execution of the geomechnical model test is guaranteed.

The invention relates to a fire-fighting pipe and a mounting method thereof, and belongs to the technical field of fire-fighting equipment. The fire-fighting pipe comprises a fire-fighting box arranged at the position of an indoor wall, a water outlet formed in the fire-fighting box and connected with a fire-fighting pipeline, and a fire-fighting water belt suspended on the side wall of the wateroutlet and located in the fire-fighting box. The fire-fighting pipe is characterized in that a first adjusting assembly is arranged at the water outlet in an adjustable mode; a second adjusting assembly is arranged on the fire-fighting water belt in an adjustable mode; and a third adjusting assembly is arranged at a water spraying opening of the fire-fighting water belt in an adjustable mode. Thefire-fighting pipe and the mounting method thereof are provided, so that by controlling the inflow amount of water flow in a fire hydrant, the pipe diameter during water flowing and the spraying opening for spraying water, the spraying amount of the water flow in the fire hydrant is effectively adjusted, and the spraying distance of the water flow in the fire hydrant is adjusted.

This invention discloses a direct coupled chip integration waveguide round cavity filter including a medium chip set with metal pastes on the positive and negative faces, in which, chip integrated waveguide round cavities are set on the chip, the cavities are coupled by the waveguide and microstrip lines are connected on the cavities at the edges of both sides, said cavities are composed of metal through holes on the chip arrayed in circle and the waveguide is composed of two lines of metal through holes.

The invention provides a content pushing method and a system based on speech recognition. The method comprises the following steps: acquiring the voice information of a user and recognizing the characteristics of the user; and pushing the content to the user according to the characteristics of the user. The system includes: a speech acquisition module, a speech recognition module and a push module. The method of the invention avoids the steps of touching and clicking the screen with both hands of the user, reduces the user-defined setting for entering deeper operation, can recognize the gender, age range and mood of the user according to the voice, and intelligently pushes and adjusts the appropriate content and switches the use mode.

The invention relates to the technical field of protective equipment, and discloses a protective mask for observing heat treatment. The protective mask comprises a protective mask body, a face screenis fixedly connected to the front end of the protective mask body, a connecting body is fixedly connected to one end of the face screen, a head protecting cover is fixedly connected to one end of theconnecting body, a cushion layer is fixedly connected to the inner wall of the head protecting cover, distance adjusting valves are fixedly connected to the middle of the bottom end of the head protecting cover through a distance adjusting shaft, an adjusting block is fixedly connected to the inner wall of each distance adjusting valve, and the distance adjusting valves are fixedly connected to the two ends of the connecting body through the adjusting blocks. According to the protective mask for observing heat treatment, by arranging the face screen, the eyes and the face of a user can be prevented from being radiated and burnt, the face screen can be worn at high temperature, and harmful gas and deformation damage can not be generated; and by arranging an eye patch device, watching mirrors and telescopic loop bars, the telescopic loop bars can be adjusted to drive the watching mirrors to move, the pupil distance suitable for the user can be adjusted, and the wearing comfortableness isimproved.

The invention discloses a blue light CdSe nanosheet crystal form regulation and control method. According to the blue light CdSe nanosheet crystal form regulation and control method, reaction temperature is reduced, and reaction time is prolonged based on conventional blue light CdSe nanosheet synthesis, wherein the CdSe nanosheet is prepared through adding of cadmium acetate dihydrate, selenium powder, and oleic acid into octadecene (ODE), and degrassing at inert atmosphere. The advantages are that: accurate regulation and control of reaction temperature and reaction time are adopted, so thatstructure mutual conversion of synthesized nanosheet between face centered cubic zinc blende structure and hexagonal wurtzite structure is realized, and nanosheet crystal structures, emission peaks,and sizes can be adjusted and controlled preferably; and in addition, Se-ODE is taken as the selenium source in conventional wurtzite synthesis technology, in the blue light CdSe nanosheet crystal form regulation and control method, Se powder is taken as a selenium instead of Se-ODE, Se-ODE synthesis time is about 6h, when Se powder is adopted, reaction time is only 3min to 1h, and unreacted Se powder can be precipitated directly, so that centrifugation purification is more convenient.

An adjustable driving circuit of flat panel display component consists of clock generator, line displacement register, line latch, line signal driving circuit, column displacement register, column scan driving circuit. It features that a column ¿C line number control module is added in driving circuit for realizing scale adjustment of it and a cascade enabling end is added on clock generator for realizing cascade.

The invention discloses a clamping type sales device for display of electronic products. The device comprises a base and a display board, wherein fixing rods are fixed at left and right sides above the base, and brackets are mounted at the inner sides of the fixing rods; placing grooves are formed in the surface of the display board, and the display board is positioned in the middle above the base; and left and right sides of the display board are connected with connecting rods. The device disclosed by the invention is provided with the base, and the base can support the whole display device so as to improve the stability of the device; the fixing rods can be supported and fixed from the outer sides of the brackets, clamping grooves and the connecting rods are mutually matched in size, theconnecting rods can be fixed in the clamping grooves, and the connecting rods are connected with the display board through screws, thereby being favorable for fixing the display board, preventing thedisplay board from falling off, and being convenient for disassembling and mounting the display board; and four groups of placing grooves are formed in the surface of the display board and can be used for placing the electronic products, thereby being favorable for more intuitively displaying the products to clients.

Drainage equipment for flood control and drainage comprises a bottom plate, four evenly-distributed first supporting plates are fixedly connected to the upper end of the bottom plate, an operation table is fixedly connected to the surfaces of the upper ends of the four first supporting plates, a rotatable local threaded rod is arranged on the inner wall of the middle of the operation table, rolling wheels are arranged on the two sides of the surfaces of the left end and the right end of the bottom plate correspondingly, reinforcing plates are arranged in the middles of the surfaces of the left end and the right end of the bottom plate correspondingly, and when the local threaded rod rotates, a structure that the rolling wheels synchronously move upwards and the reinforcing plates synchronously move outwards can be formed; and a water pump is installed on the front side of the upper end surface of the operation table, a rear end pipe of the water pump is connected with a nozzle capable of swinging left and right in a reciprocating mode, a large cylindrical pad capable of moving front and back is installed on the rear side of the upper end of the operation table, and when the large cylindrical pad moves front and back, a structure for adjusting the reciprocating left-right swinging amplitude of the nozzle can be formed. Through the rolling wheels capable of moving upwards and the reinforcing plates capable of moving outwards, the bottom plate and the reinforcing plates can be in contact with the ground, the equipment is kept stable, and side falling is prevented.

The invention belongs to the technical field of medical equipment, and particularly relates to a wrist strap type mobile electrocardiograph which comprises an electrocardiograph and a fixing unit. Thefixing unit comprises a shell, a first wrist strap, a second wrist strap, a pressing block, a first clamping block, a second clamping block, a third clamping block and a sliding block. According to the wrist strap type mobile electrocardiograph, the size of the wrist strap can be freely changed according to wrists of different sizes, so that the wrist strap type mobile electrocardiograph is suitable for being worn by different people, meanwhile, the redundant wrist strap is stored in the corresponding wrist strap after the position is fixed, and the situation that the redundant wrist strap makes contact with other objects to drive the wrist strap type mobile electrocardiograph to fall off the wrist is avoided; when the wrist moves, the contact surface of the wrist strap type mobile electrocardiograph and the wrist is tighter, so that the electrocardiograph is accurate in measurement, the physical state of a user can be reflected more accurately, and the contact part of the wrist straptype mobile electrocardiograph and the wrist is not prone to sweating, and odor is not generated; the wrist strap type mobile electrocardiograph is prevented from being soaked by sweat when making contact with the wrist, and the skin is prevented from being damaged.

The invention provides a water-bath fixing frame with an adjustable size. The water-bath fixing frame comprises a plurality of circular rings with adjustable radii and a plurality of vertical rods; the vertical rods are arranged on the circumference of the circular rings to form a cylindrical cup rack, and the tail ends of the vertical rods bend towards the outer side of the cylindrical cup rack to form supporting feet; two ends of each circular ring are respectively provided with a sawtooth part, the tail end of each sawtooth part is provided with a spring cord fastener, and the sawtooth parts at the two ends of circular ring are movably connected through the spring cord fasteners; a plurality of telescopic rods are arranged at the bottom of the cup rack, each telescopic rod is composed of two cross bars, one end of each cross bar is connected with the circular ring located at the bottom of the cup rack, the other end of each cross bar is provided with a buckle, and the two cross bars mutually pass through the buckles and are movably connected through the buckles; and counterweight blocks are arranged below the supporting feet. The water-bath fixing frame is used for water-bath heating of a drug or reagent, can fix a beaker or test tube, prevents shaking or inclination caused by boiling of water, allows the beaker or test tube to be suspended, avoids uneven heating, can adjust the size of the cup rack and is applicable to single water-bath heating of beakers or test tubes of different sizes.

The invention discloses a door and a door assembly. The door comprises a door core plate frame, two door face plates and door side plates. The two door face plates are attached to the outer side faceand the inner side face of the door core plate frame correspondingly, the door side plates are connected to the door face plates in a surrounding mode, and the size of each door face plate is larger than the size of the door core plate frame, so that adjusting gaps are formed between the one or more long edges of the door core plate frame and the door side plates as well as between the one or morewide edges of the door core plate frame and the door side plates; and the sizes of the adjusting gaps is controlled by cutting the door face plates. According to the door and the door assembly, the adjusting gaps are reserved in the length direction and the width direction of the door, the sizes of the adjusting gaps are controlled by cutting the door face plates, the size of the door is adjustedaccordingly, therefore, the door produced in the same size can be changed in size when being assembled, and universality is achieved, that is, standardized production is achieved.

The invention discloses a sand box with convenience in taking sand lump. The sand box is of isosceles trapezoid shape; the sand box is composed of a front sand box plate, a rear sand box plate and two lateral sand box plates; a separating plate capable of sliding back and forth along the two lateral sand box plates is arranged in the sand box; and wedge blocks matched with the sand box plates are respectively arranged on the inner sides of the two lateral sand box plates. The sand box has the advantages that the sand box is of isosceles trapezoid shape, the wedge blocks are adopted for wedging, the sand box is wholly lifted and the sand box plates do not need to be opened after the sand lump is manufactured, the wedge blocks leaved on the sand lump are taken off and then the sand box plates on the two sides are assembled again for the next manufacturing, so that the efficiency of manufacturing the sand lump is increased. The separating plate capable of sliding back and forth is arranged for flexibly adjusting the size of the sand box, so that the sand box can meet the manufacturing size requirements of the sand lumps in various sizes.

The invention relates to a small block model pressing equipment for simulating a rock mass structure, and belongs to the technical field of a geomechnical model test. the equipment comprises a frame base, and a small block mold, an upper mold ejection block, a push-pull cover board, a pressure lever and a range draw bar which are fixed on the frame base; the small block mold and the push-pull cover board are arranged at the upper surface of the frame base; the upper mold ejection block is arranged at the lower part of the small block mold; the upper end surface of the upper mold ejection block is inserted into a cavity of the small block mold for simulating a rock mass; and the range draw bar is arranged at one end of the pressure lever. By adopting the small block model pressing equipment, the fabrication speed of a small block model can be greatly fastened; the quality of the small block model is improved; manpower and material resources are saved; meanwhile, the size, the shape and the height of a small block can be adjusted according to the requirements; and the smooth execution of the geomechnical model test is guaranteed.

The invention provides a double-cam self-locking sole massager. The double-cam self-locking sole massager comprises a top plate, a bottom plate, a driving mechanism, a transmission mechanism, a control assembly and a supporting mechanism arranged between the top plate and the bottom plate, two sets of cam structures are arranged between the top plate and the bottom plate, each set of cam structures comprises a cam shaft and seven cams, the two sets of cam structures have same structures and are arranged symmetrically, the seven cams of each set of cam structures are arranged on the corresponding cam shaft according to a certain angle, every two cams, in a same horizontal plane, of the two sets of cam structures form a cam set, the upper portion of each cam set is provided with a cam push rod, the two ends of each cam push rod are connected with the two cams of the corresponding cam set respectively, the upper portion of each cam push rod is connected with a transverse rod, and the topsof the transverse rods are provided with massage mechanisms. The double-cam self-locking sole massager has the advantages that different effects can be achieved by adjusting the time of acupoint massage, not only can the fatigue be relaxed and relieved, but also the healthcare effect can be achieved, and the double-cam self-locking sole massager has great benefits to the human body.

The invention relates to the technical field of heaters, and discloses a novel heater for a refrigerator. The novel heater comprises two heating rods, a fixing rod and an electric wire, wherein the two heating rods are arranged in parallel, the two ends of the fixing rod are detachably connected with the ends, close to each other, of the two heating rods respectively, clamping blocks are arranged at the ends, far away from the fixing rod, of the heating rods, connecting pieces can be arranged on the clamping blocks in a matched mode, and the electric wire is detachably connected with the clamping blocks. According to the novel heater for the refrigerator, the whole heater can be disassembled and assembled conveniently, the size of the heater can be automatically adjusted according to the size of the refrigerator, and the heater is simple, convenient to use, easy to maintain and replace and suitable for being used in the market.

The invention relates to the technical field of cone crushers, and particularly relates to a hydraulic control system of a cone crusher and a control method thereof. The system is characterized by comprising a hydraulic oil tank, an oil supply component, a discharge port adjusting loop, an upper frame lifting loop, a wedge-shaped clamping loop, a clamping hydraulic cylinder, a lifting hydraulic cylinder and an adjusting hydraulic motor. The oil supply assembly is used for converting hydraulic oil in the hydraulic oil tank into pressure oil and supplying the pressure oil to the discharging port adjusting loop, the upper rack lifting loop and the wedge-shaped clamping loop through the main oil inlet way, and the discharging port adjusting loop, the upper rack lifting loop and the wedge-shaped clamping loop are further connected with the hydraulic oil tank through the main oil return way. The discharge port adjusting loop is used for controlling and adjusting the action of the hydraulic motor, the upper rack lifting loop is used for controlling the action of the lifting hydraulic cylinder, and the wedge-shaped clamping loop is used for controlling the action of the clamping hydraulic cylinder. The system is simpler in overall structure, convenient to operate and lower in failure rate, and long-time stable operation of the cone crusher is effectively guaranteed.

The invention particularly relates to preparation of nano-particles based on regenerated silk fibroin combined with a photosensitizer and anti-tumor research of the nano-particles. The method comprises the following synthesis steps: (1) degumming silkworm cocoons to extract silk fibroin, and preparing a regenerated silk fibroin RSF solution; and (2) physically embedding a photosensitizer Ce6 in the silk fibroin by adopting a solvent removal method to prepare the Ce6-loaded silk fibroin nanoparticles SFC NPs. The prepared nanoparticles have uniform size and good stability in an aqueous solution, and have basically negligible toxic and side effects and a good treatment effect in tumor treatment. Meanwhile, near-infrared fluorescence of the photosensitizer Ce6 is used for imaging, and diagnosis and treatment integration is achieved.

A drainage device for flood control and drainage, comprising a bottom plate, four evenly distributed first support plates are fixedly connected to the top of the bottom plate, and an operation platform is fixedly connected to the upper surface of the four first support plates, and the inner wall of the middle part of the operation platform is set There is a rotatable partial threaded rod, rollers are provided on both sides of the left and right ends of the base plate, and reinforcement plates are respectively provided in the middle of the left and right ends of the base plate, when the partial threaded rod rotates, the rollers can move upwards synchronously , The structure that the reinforcing plate moves outward synchronously; a water pump is installed on the front side of the upper surface of the operation table, and the rear end pipe of the water pump is connected with a nozzle that can swing back and forth left and right, and a water pump that can move back and forth is installed on the rear side of the upper end of the operation table. Large cylindrical pad, when the large cylindrical pad moves back and forth, it can form a structure to adjust the reciprocating left and right swing range of the nozzle; through the rollers that can move upwards and the reinforcement plate that moves outwards, the bottom plate and the reinforcement plate can be in contact with the ground to keep the equipment Stable and prevent side fall.

The invention provides a bar circular vibrating screen device. The bar circular vibrating screen device relates to the field of screening devices. According to the scheme, the vibrating screen devicecomprises a screen box; the screen box comprises a feeding port and a discharging port; the bottom of the screen box is connected with a supporting base; the screen box is connected with a vibrating assembly; a plurality of screens are installed in the screen box and located on different horizontal planes; any one screen is detachably connected with the screen box; each screen comprises a plurality of first bars and a plurality of second bars; the plurality of first bars are placed in the direction from the feeding port to the discharging port; the plurality of first bars are provided with a plurality of connecting through holes; and any second bar is connected with the plurality of first bars through the connecting through holes. According to the bar circular vibrating screen device, thescreens with different screen pore sizes can be replaced according to different working environments, the size of screened materials can be adjusted, and the screening selectivity is improved.

A method for preparing iron phosphide loaded graphene foam composite material, belonging to the field of functional nanomaterials. This method is through Fe(NO 3 ) 3 ·9H 2 O can controllably catalyze the structural evolution and carbonization of polyvinylpyrrolidone during the sintering process. Combined with the subsequent CVD phosphating process, the composite structure on the iron phosphide-loaded graphene foam is directly generated, and the iron phosphide-loaded graphene foam composite material is obtained. Iron phosphide nanoparticles have a nearly spherical shape, their size can be adjusted between 30 and 500nm, and they can be tightly combined with graphene foam and are reliable. The iron phosphide nanoparticles are evenly distributed and tightly combined with the graphene foam matrix. The composite material has uniform composition and structure, simple process, high repeatability, novel method and low cost, making it very suitable for large-scale promotion.

The invention discloses a polymer coupled polypeptide nano vaccine and a preparation method thereof. The vaccine comprises the following components in molar ratio: 1, a polymer skeleton with multiple reaction centers, 8.1, grafted molecules, 49167-213900, an organic solvent and 170-657 of organic alkali, the particle size of the nano vaccine can be controlled by regulating and controlling the stoichiometric ratio of the polypeptide to the Pam adjuvant molecule; the polypeptide nano vaccine obtained by the invention has a stable structure, is hardly influenced by concentration, has no concentration limiting condition, and has the capability of stabilizing co-transport adjuvant molecules.

The invention discloses a preparation method of ZrO2-Al2O3 composite ceramics, which comprises the following steps that: butyl ester zirconate and aluminium chloride are dissolved in concentrated hydrochloric acid, and hydrolysis and polymerization reaction are taken to produce composite precursors; in a water phase, long-chain hydroxyl surfactants and organic modifying agents form stable template agent solution through the mutual effect of van deer walls force and hydrogen bonds; the composite precursors and the template agent solution are combined through a static self assembly effect to obtain Zr-Al base colloid particles; and the colloid particles are subjected to heat treatment, and the ZrO2-Al2O3 composite ceramics with the ordered structure are formed. The modifying agents prevent the free growth of the colloid particles in the self assembly process through the chemical bounds or molecular acting force and surface active agents, simultaneously, the quality parameters such as dimension, microscopic structures, uniformity, dispersity and the like of the colloid are regulated, the yield of the Zr-Al base colloid particles obtained through self assembly is high, and the ZrO2-Al2O3 composite ceramics obtained through heat treatment on the Zr-Al base colloid particles have good microscopic structures and excellent performance and can be applied to other composite metal oxide nanometer materials.

The invention discloses a telescopic safety baffle structure for an elevator shaft, and belongs to the technical field of building safety appliances. The telescopic safety baffle structure comprises a main plate, a first auxiliary screen plate, a second auxiliary screen plate, a telescopic assembly and a recycling assembly, wherein the first auxiliary screen plate and the second auxiliary screen plate are connected with the main plate through the telescopic assembly, and the recycling assembly comprises a follow-up rack and a foldable recycling gear component. According to the elevator shaft safety baffle, through the arranged telescopic assembly, the size of the whole safety baffle structure after stretching can be conveniently adjusted, the elevator shaft safety baffle structure is conveniently suitable for elevator shaft opening specifications of different width sizes, and the application range of the elevator shaft safety baffle is widened; and through the arranged the foldable recycling assembly, the two auxiliary screen plates can be very conveniently recycled at an elevator door opening, recycling is facilitated, great convenience is brought to cyclic utilization of the elevator shaft safety baffle, and meanwhile the use cost is greatly reduced.