138results about How to "There will be no shedding phenomenon" patented technology

The invention relates to a process for casting a wear-resistant hammer head, in particular to a process for casting the wear-resistant hammer head by compounding two kinds of metal liquid. A method for synchronously smelting and pouring the two kinds of metal liquid, and molding by using a stripping plate molding machine is adopted. The process comprises the following steps of: manufacturing a mold, a core box, a sand core and the stripping plate molding machine, molding, smelting, pouring, opening the box for cleaning, and performing heat treatment. The hammer head cast by the process has the characteristics of high toughness, strength and wear resistance, the conditions of cracking and falling-off of a hammer handle and the hammer head can be avoided, and wear resistance is high; the stripping plate molding machine is convenient and easy to use, a casting mold is standard, production efficiency is high, and production cost is low; meanwhile, multiple purposes can be achieved, and hammer heads of multiple specifications can be provided for users.

The invention discloses injectable expansion type bone cement. The injectable expansion type bone cement is made by mixing a solid phase composition and a liquid phase composition according to the mass ratio of 1.5:1-3:1, wherein the solid phase composition is a methyl methacrylate-acrylic acid copolymer while the liquid phase composition is a mixture of methyl methacrylate, N,N-dimethyl toluidine and hydroquinone. The preparation method includes: taking the methyl methacrylate and the crylic acid as reactive monomers generating polymerization reaction under the action of an initiator and a cross-linking agent to generate the methyl methacrylate-acrylic acid copolymer; evenly mixing the methyl methacrylate, the N,N-dimethyl toluidine and the hydroquinone to the liquid phase composition; mixing the solid phase composition with the liquid phase composition according to the mass ratio of 1.5:1-3:1 in proportion, stirring to obtain bone cement fluid, and obtaining the injectable expansion type bone cement after self-setting.

The invention discloses a method for directly growing nickel oxide and cobalt oxide and a complex energy storage material thereof on a titanium substrate. The method comprises the following steps of: growing a titanium dioxide nanotube on the surface of the titanium substrate by an anodic oxidation method; soaking in a citric acid solution to further increase the hydroxyl concentration of the wall of the titanium dioxide nanotube; putting the prepared transition metal solution and the treated titanium substrate into a reaction kettle, and performing hydrothermal reaction; and roasting the reacted titanium substrate in N2 atmosphere to obtain a product. Experimental conditions are simple, the requirement on the precision of an experimental instrument is low, the method is easy to operate, and the grown product film is uniform, is stably combined with the titanium substrate and has high energy storage performance, so the method is suitable for preparing the energy storage material taking metal titanium as the substrate.

The invention relates to an outer wall waterproof structure which comprises a polymer cement waterproof paint layer, seamed woven polyester cloth and a waterproof anti-crack mortar layer. An insulating layer or a leveling layer of an outer wall is coated with the polymer cement waterproof paint layer. The seamed woven polyester cloth adheres to the polymer cement waterproof paint layer and is coated with the waterproof anti-crack mortar layer. The outer wall waterproof structure is not prone to damage, the anti-crack performance and the waterproof effect are good, the wall can be effectively prevented from falling off, and the service life is long. According to the outer wall waterproof structure, good social benefits and economic benefits further can be achieved, personnel or property loss caused by fall-off of the wall can be avoided, replacement of the outer wall waterproof structure is reduced, and the maintenance cost is reduced.

The invention provides a production method of a graphene / ceramic composite filter membrane. The method comprises the following steps: preparing a graphene oxide solution with a certain concentration; allowing the graphene oxide solution to seep in the surface of a ceramic filter membrane and micropores of the ceramic filter membrane; and reducing a graphene oxide / ceramic filter membrane to obtain the graphene / ceramic composite filter membrane. The method allows the graphene oxide solution to seep in the micropores of the ceramic filter membrane, and avoids just adsorption of the graphene oxide solution to the surface of the ceramic filter membrane in the prior art, so the aperture dimension of the micropores in the ceramic membrane is reduced; graphene oxide is reduced into graphene, so grapene and the ceramic filter membrane are bonded through chemical bonds, and the phenomena of shedding of the graphene oxide and dissolution of the graphene in the solution are prevented; and the filtering performance of the graphene is bonded to the ceramic filter membrane, so the filtering separation effect and the mechanical strength of the graphene / ceramic composite filter membrane are improved.

The invention relates to a battery machining robot. The battery machining robot comprises an adjusting device, a two-way telescopic plate, two symmetric air cylinders, a button battery clamping deviceand a cylindrical battery clamping device; the front end of the adjusting device is installed at the upper end of the two-way telescopic plate, the two symmetric air cylinders are installed in the middle of the two-way telescopic plate, and the top ends of the symmetrical air cylinders are installed at the outer ends of the two-way telescopic plate through flanges; and the button battery clampingdevice is installed on the right side of the lower end of the two-way telescopic plate, and the cylindrical battery clamping device is installed on the left side of the lower end of the two-way telescopic plate. According to the battery machining robot, the problems that in the present process of producing batteries, people need to grab the different types of batteries, when the button battery isgrabbed, due to the fact that the button battery is relatively small, jumping and flying of the button battery are prone to occurrence during grabbing by people, and people possibly have blurred vision and then miss grabbing the button battery during long-term grabbing, and in addition, when a cylindrical battery is grabbed, people usually grab the middle part of the cylindrical battery, and thenthe grabbed cylindrical battery possibly falls off due to sweating of hands can be solved.

The invention discloses a stone removing device for urinary system, which is composed of a pipe made of high molecular materials, wherein the two ends of the pipe are inwardly bent in opposite direction to obtain a circular shape like pig tail, the wall of the two ends of the pipe is opened with 3-5 side holes of diameter 0.1-0.8mm, and the middle section of the pipe is provided with 10-20 small pinch-and-swell form baskets that are formed by opening four openings on the surrounding wall of the pipe with equal intervals. The lower end of the pipe is provided with a ureter bladder marking point, the upper end of the pipe is provided with a kidney marking point, and the top of the pipe is in the shape of tapered tube with gradually decreased diameter. Because of the special small retractable pinch-and-swell form baskets, the stone removing success ratio is remarkably improved compared with the prior stone pinching baskets, and the detachment of pinched stone is avoided. The inventive pinch-and-swell structure takes good supporting effect to the ureter, so that the ureter may not be stopped by stones, and the urine in the kidney can smoothly reach bladder.

The invention discloses an automatic needle insertion machine for a wooden comb. The automatic needle insertion machine comprises a workbench, a work station, a sliding rail and a machine tool used for performing stamping operation on the work station; one end of the sliding rail is connected with the machine tool; the other end of the sliding rail extends to the side part of the workbench; and the work station can make reciprocating motion on the sliding rail and comprises a sliding sleeve matched with the sliding rail, a connecting part which is connected to the sliding sleeve in an overturning manner, a positioning plate body fixedly arranged on the connecting part, a finished product collection plate body detachably connected with one side of the positioning plate body and a stamping part arranged on the other side of the positioning plate body. Through adoption of the automatic needle insertion machine, traditional manual assembly is abandoned, and automatic stamping operation is adopted to assemble the comb, so that the assembly efficiency of the comb is greatly improved, the firmness of the comb is improved at the same time, and the product performance is more stable.

The invention discloses a model multi-angle display device for building teaching, relates to the technical field of display devices, and solves the problems that an existing display supporting plate can only rotate in a single direction to change the observation angle of a model after fixing the model, the flexibility is low, and high limitation exists. The model multi-angle display device for building teaching comprises an overturning track ring, and the overturning track ring is inserted into a fixed clamping plate. The display supporting plate of the device can be driven by a driving motorc to rotate to change the display angle, and a rotating track ring can be driven by a driving motor a and a driving motor b to complete left-right overturning and front-back overturning, so that the display angle of the top display supporting plate can be changed more flexibly, each angle changing mode can be adjusted independently and does not interfere with each other, and the flexibility and practicability of the device are improved.

The invention discloses a multi-color solder mask layer. Different colors of the solder mask layer can be used for distinguishing a functional area or a special area. According to the solder mask layer, one or more colors different from the background color are used for being displayed as characters, and accordingly the character printing procedure is omitted.

The invention relates to a snake bone device for an endoscope. The device comprises a snake bone front segment ring, a snake bone rear segment ring, multiple snake bone middle segment rings and connecting pin shafts, wherein the snake bone front segment ring and the snake bone rear segment ring are provided with a rear connecting lug and a front connecting lug respectively, and the rear connecting lug and the front connecting lug are provided with connecting shaft holes respectively; each snake bone middle segment ring is provided with a first connecting lug and a second connecting lug which are provided with connecting shaft holes, a clamping notch communicated with the corresponding first connecting shaft hole is formed in each first connecting lug, and the first connecting lug of one snake bone middle segment ring is connected with the second connecting lug of another snake bone middle segment ring through the corresponding connecting pin shaft; a front clamping notch communicated with the front connecting shaft hole is formed in the front connecting lug, the rear connecting lug is connected with the first connecting lug of the adjacent snake bone middle segment ring through the corresponding connecting shaft pin, the front connecting lug is connected with the second connecting lug of the adjacent snake bone middle segment ring through the corresponding connecting shaft pin, and axial threading grooves are formed in the inner walls of the snake bone front segment ring and the multiple snake bone middle segment rings respectively. According to the device, riveting is not needed, assembly is convenient, and production efficiency is high.

The invention discloses a chain detection device and a tension adjusting device for the chain detection device. The chain detection device comprises a bottom cabinet, a gravity sensor and bottom plates, an embedding groove is formed in the top of the bottom cabinet, the gravity sensor is installed in the embedding groove, and two sets of bottom plates are installed at the top of the bottom cabinet; cylinders are installed at the tops of the two sets of bottom plates, lifting structures are installed on the bottom walls of the cylinders, the outer surfaces of the two sets of cylinders are sleeved with lantern rings, and long rods are installed on the outer walls of one sides of one set of lantern rings and one side of the lifting structure. When the device is used, the top end and the bottom end of a chain can be connected with the two sets of limiting plates through the internal separation grooves correspondingly, the mode of fixing the chain can be used for chains of different specifications, tension detection can be conducted on the fixed chain through the cooperation effect of the lifting structure and the gravity block, and gravity adjustment can be facilitated; the device can perform dead knot detection on the chain, and the electric telescopic cylinder in the device can be conveniently disassembled and overhauled.

The invention discloses a pet toy, a two-color molding module and a two-color secondary vulcanization molding process. The pet toy includes a base body of a first color, the base body is provided with a groove, and a groove is formed in the groove. There is a stripe part with a second color that protrudes outward, and the stripe part and the base body are integrated into an integral molding part; the module includes a base body forming mold and a stripe part forming mold, and the base body forming mold is provided with a mold for forming the base body. The convex part of the groove on the outer surface of the body, the stripe part forming mold is provided with two oppositely arranged side blocking parts inserted into the groove on the base body, and a stripe part for forming a stripe part is formed between the two oppositely arranged side blocking parts The striped groove, the injection flow channel of the striped part forming mold is communicated with the striped groove; the two-color secondary vulcanization molding process includes moving the formed matrix out of the matrix forming mold, and placing it into the striped part after the installation is completed. In the mold, the step of ensuring that the side stop is placed in the groove of the base body.

The invention relates to glass glaze and the manufacturing process thereof. The invention is characterized in that the ingredient of the glass glaze mainly comprises by weight percentage: quartz powder is 5 to 18 percent, boric acid is 9 to 23 percent, red lead is 40 to 65 percent, and expansion stabilizing agent is 8 to 17 percent. The manufacturing process is realized by that: (a) the materials are mixed fully according to the weight percentage; (b) the mixture is fused to be thick and sticky at the temperature of 1000 to 1200 DEG C; (c) the fused mixture is cooled to be the glass base glaze block with original color; (d) the glaze block is crashed into powder to be fully mixed with paint to form colored glaze. The glass glaze and the manufacturing process thereof of the invention provide the glass glaze which keeps the designs and characters on the surface of a glass product having embossing effect and high ornamental value.

The invention discloses efficient wallpaper powder which is prepared by stirring and mixing the following components in percentage by weight: modified polyvinyl alcohol resin, carboxymethylcellulose, bentonite, a mildew preventive and gelatinized starch. According to the efficient wallpaper powder, the used materials are environment-friendly materials, and are nontoxic and harmless. The optimum proportions of the gelatinized starch and polyvinyl alcohol are optimized; and the condition that an adhesive has relatively high viscous force is ensured. In addition, the bentonite is added, and the carboxymethylcellulose is compounded for use, so that the adhesive force of the wallpaper is further improved; the painting resistance of the adhesive is improved; the construction is relatively smooth; the adhesive does not splash in the painting process; the wallpaper does not generate the phenomena of edge warping and dropping after being used for a long period time; and the efficient wallpaper powder is good in construction effect and is convenient.

The invention discloses an assembly-type building door and window. The assembly-type building door and window comprises a fixing frame, a door and window frame and a sealing piece. The fixing frame isarranged in a building wall in embedded and poured modes. The door and window frame is embedded in the fixing frame in a positioned mode. The door and window frame and the fixing frame are arranged in fixed and sealed modes by adopting a fixing piece and the sealing piece. An operation cavity is formed in the position, located at the fixing piece, of the position, connected with the fixing frame,of the door and window frame. The sealing piece is arranged in the operation cavity in sealed and embedded modes by adopting a locking piece. According to the assembly-type building door and window,by pouring the fixing frame in the wall during pouring, the problem that the fixing frame is deformed slightly can be made up through the door and window frame and the sealing piece; due to the fact that the door and window frame is mounted after building completion, the door and window frame cannot be subjected to any damage, and mounting is simple and convenient; and the sealing piece can be embedded in the interior well, the phenomenon of falling off cannot occur, and sealing performance and assembly detachable performance of the building door and window are improved greatly.

The invention relates to a preparation method for a snake bone device of an endoscope. The snake bone device comprises a snake bone front pitch circle, a snake bone rear pitch circle, connecting pin rolls and a plurality of snake bone middle pitch circles connected between the front pitch circle and the rear pitch circle. The preparation method sequentially comprises the following specific preparation steps: selecting materials; cutting, leveling and polishing the snake bone front pitch circle, the snake bone middle pitch circles and the snake bone rear pitch circle; during shape cutting of the snake bone middle pitch circles and the snake bone rear pitch circle, respectively cutting out a clamping opening which is communicated with a connecting shaft hole, and the corresponding connecting shaft hole; processing and forming the connecting pin rolls by stainless steel wires on a lathe according to drawing requirements; stamping wire penetrating slot openings of the snake bone front pitch circle and the snake bone middle pitch circles by utilizing a special wire penetrating slot forming tool to form axial wire penetrating slots; assembling the snake bone front pitch circle with the snake bone middle pitch circles through the connecting pin roll by virtue of a special assembly tool, and assembling and connecting everytwo snake bone middle pitch circles, as well as the snake bone middle pitch circles and the snake bone rear pitch circle to form a final snake bone device by virtue of the same steps. The preparation method is reasonable in process; and the prepared snake bone does not need to rivet.

The invention discloses a metallized plating solution and a method for metallizing the surface of a magnesium alloy product. Every one littler of metallized plating solution comprises 15g of nickel sulfate, 25g of sodium hypophosphite, 20mL of 20% sodium hydroxide and 3g of lithium fluoride, wherein the solvent is water. The method for metallizing the surface of the magnesium alloy product comprises the following steps: degreasing; acid washing; acid activating; alkaline activating; chemical nickel-plating; electrolyzing and activating; and copper plating and chrome brightening. The metallized plating solution disclosed by the invention has the beneficial effects that the coating made from the metallized plating solution has high wear resistant and corrosion resistant performances and particularly has an extremely strong adhesive to a matrix; if even the product is broken, falling of the plating layer is further avoided; the plated part obtained by the method provided by the invention has the advantages of bright surface luster and color, very high surface quality and excellent wear resistant and corrosion resistant performances; the plated part still can maintain a very high adhesive force under a high impact.

The invention discloses an asphalt pavement embedded with anti-skid wear-resistant stones and a construction method of the asphalt pavement. The construction method comprises the following steps: paving a coarse-grained asphalt concrete lower surface layer, paving a medium-grained asphalt concrete middle surface layer and paving a fine-grained asphalt concrete upper surface layer, the fine-grainedasphalt concrete upper surface layer comprises anti-skid wear-resistant stones located on the surface, and the anti-skid wear-resistant stone is formed by embedding high-polishing-value stone into premixed modified asphalt; stone in the fine-grained asphalt concrete upper surface layer is common stone except anti-skid wear-resistant stone on the surface, and a binding material of the stone is SBSmodified asphalt. The construction method concretely comprises the following steps: spreading a layer of anti-skid wear-resistant stone on the upper surface layer of the fine-grained asphalt concretewhich is just paved and is not rolled, embedding the anti-skid wear-resistant stone into the surface of the upper surface layer through multiple times of rolling of a road roller, and forming a 1-cmanti-skid wear-resistant layer at the same time. According to the invention, the anti-skid and wear-resistant stones can play anti-skid and wear-resistant roles, the construction process is simple, the use amount of anti-skid and wear-resistant materials is saved, and the cost is reduced.

The invention discloses a method for assembling a high-voltage sodium ion supercapacitor. The method comprises the steps of putting a titanium sheet of 3*5cm<2> into a NaOH solution of a certain concentration to prepare and obtain a layered and multi-stage Na<2>Ti<3>O<7> nanosheet array in a hydrothermal manner, and taking the Na<2>Ti<3>O<7> array as the negative electrode of the sodium ion supercapacitor; by taking potassium citrate as a carbon source, performing high-temperature annealing in a N<2> atmosphere to obtain a carbon nanosheet, and taking the carbon nanosheet as the positive electrode material of the sodium ion supercapacitor; and by taking the carbon nanosheet and the Na<2>Ti<3>O<7> nanosheet array as the positive and negative electrode materials respectively, obtaining the sodium ion supercapacitor through assembling. The energy density of the sodium ion supercapacitor can reach 89.6 Wh kg<-1> at the power density of 825 W kg<-1>; the energy density still can reach 73 Whkg<-1> at the high power density of 8,250 W kg<-1>; in addition, high current charging and discharging of 2 A g<-1> can be realized at the high voltage of 4V; and after 2,000 cycles, the specific capacity still can be 73.9% of the initial capacity.

The invention relates to firefighter protection suit outer layer fabric and a manufacturing method thereof, and belongs to the technical field of textile fabric. The firefighter protection suit outer layer fabric can be obtained in the way that the surface of finished aramid fiber fabric is coated with a layer of alumina gel. The alumina gel comprises, by mass, 3-6 parts of powdered aluminum, 65-70 parts of waterborne polyurethane emulsion, 20-30 parts of polyvinyl acetate emulsion, 2-4 parts of nano silica powder, 10-15 parts of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, 15-19 parts of polyving akohol, 10-15 parts of ethanol and 5-10 parts of water. The firefighter protection suit outer layer fabric not only has excellent high-temperature resistance and thermal protective performance but also has excellent fire resistance; moreover, the softness and comfortableness are high, the air permeability is splendid, and great wearing comfortable sensation is given to firefighters.

The invention discloses an engineering multi-level mechanical part transporting device. The engineering multi-level mechanical part transporting device comprises a small-sized loading vehicle; a placing cabinet is arranged at the middle part of the top of a bearing end of the small-sized loading vehicle; a power mechanism is arranged on the left side of the top of the bearing end of the small-sized loading vehicle; a tool placing box is arranged on the right side of the top of the bearing end of the small-sized loading vehicle; the placing cabinet comprises a cabinet body; and a fixing plate is fixedly connected with the bottom of the cabinet body. As the small-sized loading vehicle, the placing cabinet, the power mechanism and the tool placing box are arranged, mechanical parts are more convenient during transportation; and meanwhile, through adoption of a multi-level layout, the engineering multi-level mechanical part transporting device can load different mechanical parts so that damaged equipment in engineering construction is more convenient during maintaining and changing the parts, and time and labor can also be saved for overhauling personnel; and meanwhile, the progress ofthe engineering construction cannot be delayed; and therefore, the engineering multi-level mechanical part transporting device can meet use demands in the engineering construction.

The invention relates to a positive-pressure aluminum extraction device for aluminum liquid, and in particular relates to a raw aluminum liquid extraction device. The raw aluminum liquid extraction device comprises a ladle cover with a ladle beam hook and a ladle bag with an aluminum pouring port and a ladle pipe. The raw aluminum liquid extraction device is characterized in that a circular ring of which the edge is provided with a groove is fixed on the top of the ladle bag; an asbestos cord is coiled in the groove; a boss matched with the groove of the circular ring is formed on the ladle cover; and opening and closing devices are uniformly distributed along the circumference between the ladle cover and the ladle bag. The raw aluminum liquid extraction device is simple in structure, reliable in use and convenient to clean, is safe and unique, and can enhance the aluminum extraction and ladle bag cleaning speed, improve the working efficiency and reduce the harm of dust to ladle cleaning personnel.

The invention discloses an aluminum sheet encapsulating protective jacket and a production process thereof. The protective jacket comprises a bottom plate adaptive to a bottom surface of a cellphone in shape and size, and an outer aluminum frame adaptive to an outer frame of the cellphone in shape and size; the inner wall of the outer aluminum frame is subjected to injection molding of an adhesive to form an inner soft adhesive frame wrapping the inner wall of the outer aluminum frame; the position, close to the edge, of the bottom end of the bottom plate downwards extends to form a snap ring; the inner soft adhesive frame is inwards sunk to form a circle of clamp slot adaptive to the snap ring in shape and size; after the clamp ring is clamped into the clamp slot; the bottom plate is fixedly connected into the inner soft adhesive frame and defines a containing cavity adaptive to the cellphone in shape and size together with the outer aluminum frame. The inner soft adhesive frame fully wraps the inner wall of the outer aluminum frame, and soft adhesive full wrapping is adopted to isolate the outer surface of the cellphone from the outer aluminum frame, so that a phenomenon that the surface of the cellphone is of scraped is effectively avoided; moreover, through the full wrapping, a good buffering effect is realized, and the cellphone is directly fixed in the inner soft adhesive frame, thus ensuring stable structural strength and avoiding a phenomenon that the cellphone is separated from the protective jacket after falling down.

The invention discloses a high-weather-resistant bare concrete protection agent which comprises, in weight percent, 20-45% of composite inorganic fillers, 15-30% of organic silicone emulsion, 10-30% of silicone acrylic emulsion, 1-3% of thickening agents, 0.2-1.5% of flatting agents and 0.5-2.0% of preservatives. The composite inorganic fillers are compounds of sericite, calcium carbonate, kaolin,hydrophilic air-phase silicon dioxide and titanium dioxide. The bare concrete protection agent is applied to protection of bare concrete has the advantages that the protection agent is good in waterproof and breathable effect and resistant in ultraviolet irradiation, durability of the bare concrete can be remarkably improved, and discoloring and falling of protection layers are omitted. Production devices of the bare concrete protection agent are simple and less in energy consumption, green and environmentally friendly, by-products are avoided, and post-treatment is omitted.

The invention provides cinnabar coloring paint which is good in adhesion. After a cinnabar painting is colored, the paint can be well attached to the surface of the cinnabar painting and not prone to peeling off. Meanwhile, cured high-aluminum powder, modified nanowhisker materials, dimethyl fumarate, polyurethane resin, polytetrafluoroethylene, zinc stearate, dibutyl phthalate, silicone macromonomer and a white oil component are added. Adhesion of the cinnabar coloring paint is guaranteed, meanwhile, gaps between all colored substances of the cinnabar coloring paint are small, the outer surface of the colored part of the cinnabar painting forms a smooth curved face, and the cinnabar painting looks natural.

The invention discloses an anti-slip optical fiber coupler capable of being accurately positioned and installed, which comprises a coupler body, a fixed box, a belt wheel mechanism, an optical fiber head and an optical fiber cable. A resistance pad is pasted on one side of the coupler body. A movable block is movably installed on the inner side of a through groove, and a fixed rod is fixed on the side surface of the movable block. The side face of a guide block is connected with a fixed box through a limiting rod. Protection boxes are fixed to the two ends of the coupler body. A connecting rod is movably arranged in an installation hole. An installation cylinder penetrates through the protection boxes. A movable groove is formed in the position, on the outer side of a movable rod, of the installation cylinder. A movable shaft is sleeved with the belt wheel mechanism. The anti-slip optical fiber coupler capable of being accurately positioned and installed is provided with a structure for locking the optical fiber cable and the coupler, the optical fiber cable can be prevented from being separated from the coupler when being pulled, and a reserved line is arranged after the optical fiber cable is connected, so that subsequent maintenance operation is facilitated.

The invention relates to the technical field of AR glasses, in particular to AR glasses convenient to wear and a using method thereof. The AR glasses comprise AR glasses, an auxiliary device, an adjusting device, glasses brackets and a positioning device. The auxiliary device is arranged on the inner side of the AR glasses. The adjusting device is arranged in the center of the inner side of the ARglasses. Glasses brackets are arranged on the left side and the right side of the front end surface of the AR glasses. The glasses bracket is rotatably connected with the AR glasses. A positioning device is arranged on the outer side of the AR glasses. The positioning device comprises a rack, a support frame, a rubber pad, a gear, a positioning frame and a protective sleeve. A support frame is arranged on the outer side of the glasses bracket. in the AR glasses, through arranging the auxiliary lens, in cooperation with spiral connection of the screws, the auxiliary lenses and the supporting plates, sliding connection of the clamping blocks and the supporting plates and elastic force of the springs to the limiting plates, when the device is used, by additionally arranging the auxiliary lenses for vision correction, the device can be conveniently used by people with poor vision, and therefore the application range of the device is greatly widened.

The invention discloses a left suspension cushion assembly. The assembly comprises a left automobile body connecting support, a left suspension cushion installation tube and a left power assembly connection support, wherein the left automobile body connecting support is connected with the periphery of the left suspension cushion installation tube in a welded mode and provided with bolt holes connected with an automobile body, the left power assembly connecting support is provided with an inserting part, and the inserting part is inserted into the left suspension cushion installation tube fromthe side of the left suspension cushion installation tube; an outer lining, a left suspension cushion and an inner lining are sequentially and fixedly arranged on the inner side of the left suspensioncushion installation tube in the radial direction from outside to inside; a rubber body layer is vulcanized at the side of the inner lining, and an anti-disengaging ring protruding outwards is arranged on the inserting part; the maximum diameter of the anti-disengaging ring is larger than the inner diameter of the rubber body layer, and the anti-disengaging ring is clamped in the rubber body layer. According to the left suspension cushion assembly, the machining precision requirement of the inserting part of the left suspension cushion support is lowered, the product qualification rate is increased, and the production efficiency is improved.

The invention discloses a super-strong thin-walled corrosion-resistant steel pipe. The steel pipe sequentially comprises a first alloy layer, a second alloy layer, a third alloy layer, a steel pipe body, the third alloy layer, the second alloy layer and the first alloy layer from outside to inside. The first alloy layer is a zinc alloy layer or a zinc oxide alloy layer; the second alloy layer is a zinc-aluminum alloy layer or a zinc-aluminum-magnesium alloy layer; and the third alloy layer is one of a zinc-aluminum-iron alloy layer, a zinc-aluminum-magnesium-iron alloy layer, an aluminum-iron alloy layer or an aluminum-magnesium-iron alloy layer. The steel pipe provided by the invention has the advantages of good mechanical property, long service life, high strength and light weight, is convenient for erecting a scaffold at high altitude, and reduces the construction risk.