196results about How to "Act as a hindrance" patented technology

The invention relates to an anti-bacterial thermoplastic composite, which comprises the following mixed components: 100 parts of thermoplastic by weight and 0.1-40 parts of composite antibacterial agent by weight, wherein the composite antibacterial agent comprises micronano inorganic / organic particles and guanidinesalt polymers which are coated on the surfaces of the micro / nano particles and / or embedded among pores and layers of the micronano particles; the weight ratio of the guanidinesalt polymers to the micro / nano particles is 1:1-1:50; and the micro / nano particles have at least a one-dimensional average size of 1nm-1000mum. The anti-bacterial thermoplastic composite is obtained by melting and mixing the components such as the thermoplastic, the composite antibacterial agent, and the like, therefore the antibacterial rate of the anti-bacterial thermoplastic composite is higher and the preparation method is simple.

The invention provides a compound antimicrobial and a preparation method thereof. The compound antimicrobial comprises micro-nano particles and guanidine polymers by the weight ratio of 1:1 to 1:50, wherein the micro-nano particles at least have the one-dimensional average dimension of 1nm to 1000 mu m; the guanidine polymers are coated on the surfaces of the micro-nano particles and / or embedded in holes or among layers of the micro-nano particles; inorganic or organic particles comprising micro-nano particles are added to a solution of the guanidine polymers; organic alkali is added or not added; the particles and the solution are uniformly mixed and dried for obtaining the compound antimicrobial. When applied to plastics, fibers and rubber, the antimicrobial has high sterilization efficiency, also largely reduces the processing cost of antibacterial materials, and has simple and convenient preparation method.

The invention discloses an SBS (styrene-butadiene-styrene) modified asphalt with stable thermal storage, which has significantly improved thermal storage stability and has good high-temperature and low-temperature road performance. The SBS modified asphalt is prepared by the step of adding a styrene-butadiene-styrene block copolymer, a stabilizer, a solubilizer and polyphosphate into base asphalt, wherein the weight of the styrene-butadiene-styrene block copolymer is 2-6% of the weight of the base asphalt, the weight of the stabilizer is 0.1-0.2% of the weight of the base asphalt, the weight of the solubilizer is 1-5% of the weight of the base asphalt, and the weight of polyphosphate is 0.1-1% of the weight of the base asphalt. The preparation process of the SBS modified asphalt comprises the following steps: (1) collecting base asphalt, and heating to 175-185 DEG C; (2) adding aromatic oil, and stirring for 40-80 seconds; (3) adding styrene-butadiene-styrene block copolymer, and shearing for 8-12 minutes; (4) adding sulfur powder, and shearing for 8-12 minutes; and (5) adding polyphosphate, and developing under stirring for 100-140 minutes to obtain the SBS modified asphalt with stable thermal storage.

This invention discloses a method for hot-dip galvanizing on steel work piece. The method comprises: checking black work piece, suspending, degreasing, rinsing, washing with acid, rinsing, treating with a galvanizing aid, drying with hot air, hot-dip galvanizing and cooling. During the hot-dip galvanizing process, Al, Ni, Si and rare earth element are added into the galvanizing solution. The galvanizing solution comprises: Al 7-9 wt. %, Ni 3-6 wt. %, Si 0.5-0.8 wt. %, rare earth element 0.5-1.0 wt. %, and Zn as balance. The addition of Si can reduce Fe content in the galvanizing solution, and the formation of Zn-Fe alloy residue. The Zn consumption is lowered by nearly 1%, and the surface quality of galvanized steel is improved.

The invention discloses a processing method of a copper alloy for slot wedges, which is prepared by continuous casting → solid solution quenching → continuous extrusion → cold deformation → cryogenic treatment → aging; the copper alloy is composed of copper, nickel, silicon, Composed of elements such as chromium, cobalt, aluminum, magnesium, etc., the material properties obtained by the technical solution provided by the invention are excellent, and fully meet the use requirements of the generator rotor slot wedge.

The invention relates to a raw water separator for a spiral membrane module, a membrane containing the separator and a reverse osmosis membrane device. The raw water separator is a net structure formed by intersecting warp wire rods and weft wire rods. The warp wire rods are parallel to the raw water flow direction of the membrane module. The weft wire rods are arranged in the direction perpendicular to the warp wire rods. A channel which is consistent with the raw water flow direction is formed between the warp wire rods and the weft wire rods and the spiral membrane. The weft wire rods of the raw water separator are perpendicular to the direction of the channel so as to obstruct raw water flowing along the channel. Thus, turbulent is generated, and concentration polarization of raw water and pollutant clogging are avoided. Through the raw water separator, the membrane module can be applied in higher TDS and COD high-salt complex wastewater treatment. By the utilization of the reverse osmosis membrane device, part of pretreatment facilities can be minimized or canceled during the application process, and the same salt rejection and product water recovery rate are realized. Therefore, project investment is greatly minimized and operating cost is reduced.

The invention relates to an electrothermal-driven in-plane bistable radio frequency microswitch belonging to the technical field of micro electromechanics. The electrothermal-driven in-plane bistable radio frequency microswitch comprises an electrothermal-driven mechanism, a mechanical locking mechanism and a signal conversion mechanism, wherein the electrothermal-driven mechanism is positioned under the mechanical locking mechanism; and the mechanical locking mechanism is connected with the signal conversion mechanism. The invention can realize the mechanical locking by using a pair of locking contacts, does not require continuous power consumption when keeping in a stable state, also fully develops the advantages of large driving force, high displacement power density and convenient integrated manufacture of an electrothermal driver and can be used as the actuation form of the mechanical locking structure of the switch. The switch has simple structure, foreseeable radio frequency (RF) characteristic, possibility of batch manufacture and practical application and suitability for integral manufacture.

A high-strength and-toughness metallic shift with gradient structure features that it is composed of 2-15 days which are respectively made of expensive high-quality alloy steel and cheap carbon steel or microalloyed steel. The high-strength antiwear materials are used for its surficial layers and the high-toughness materials are used for its core layers in order to transfer torque. Its preparing process is also disclosed.

The invention discloses a special two-component solvent-free polyurethane adhesive for compounding an aluminized film. The special two-component solvent-free polyurethane adhesive comprises a component A and a component B in a mass ratio of 1: (1.2-1.5). The component A is prepared from the following ingredients, by weight: 25 to 35 parts of polyester polyol, 15 to 20 parts of a component, 1 to 2parts of modified nanometer silicon dioxide, 0.2 to 0.3 part of catalysts and 0.1 to 0.2 part of an antioxidant; and the component B is polymethylene polyphenyl polyisocyanate. According to the invention, polyester polyol is used as a main substance of the component A, so that the use of an organic solvent is avoided, and the requirement of environmental protection is met; the crosslinking degreeand the heat resistance of an adhesive film can be improved by introducing lignin, and the water resistance, the heat resistance and the mechanical strength of the adhesive can be enhanced; besides, the modified nano silicon dioxide plays a role of a particle cross-linking point, so that the curing rate of the adhesive is increased, and the network compactness of an adhesive film is improved; andthe prepared polyurethane adhesive has good bonding strength and mechanical strength, and is suitable for compounding of an aluminized film.

The invention discloses an experiment device for a spontaneous combustion characteristic test during the coal rock creep process. The experiment device comprises a coal accommodating container, a pressure applying mechanism used for applying static pressure to a coal sample in the coal accommodating container, an inflation system used for inputting mixed gases of air and nitrogen to the coal accommodating container and a gas collecting unit used for collecting the gases outputted from the coal accommodating container; an upper cover is arranged on the upper end of the coal accommodating container and is in sliding match with the inner wall of the coal accommodating container; a sensor support framework is arranged in the coal accommodating container, a plurality of temperature sensors are arranged on the sensor support framework, a pressure sensor is arranged on the top surface of the coal sample in the coal accommodating container, a pressure testing tube is connected on the coal accommodating container, and a first gas-pressure meter and a vent valve are arranged on the pressure testing tube. The experiment device is simple in structure, convenient to use and capable of obtaining impact of factors of the static pressure, oxygen concentration, grain size and the like during static creek of coal rocks, better guiding coal mine fire prevention and improving a forecasting system for coal spontaneous combustion.

The invention discloses a preparation process of a copper alloy for short-flow slot wedges, which adopts the preparation processes of upward continuous casting→continuous extrusion→solution quenching→cold deformation→cryogenic treatment→aging; the copper alloy is composed of copper, nickel, silicon , chromium, silver, magnesium and other components, the technical solution provided by the invention, the obtained material performance is excellent, fully meet the use requirements of the turbine generator rotor slot wedge.

The invention discloses a soil remediation device for ecological environmental protection engineering and a remediation method thereof, and relates to the technical field of soil remediation devices.In order to pretreat soil before remediation and improve the remediation effect of a remediation agent on the soil conveniently, the soil remediation device specifically comprises a shell, a crushingassembly and a stirring assembly, a supporting plate is welded to the inner wall of one side of the shell, a base is welded to the outer wall of the top of the supporting plate, two lead screw slidingtable assemblies are fixed to the outer wall of the top of the supporting plate through bolts, first fixing frames are fixed to the sliding ends of the two lead screw sliding table assemblies throughbolts correspondingly, connecting rods are rotatably connected to the inner walls of the two first fixing frames through rotating shafts correspondingly, a filtering box is connected to the outer wall of the top of the base through a hinge, and two second fixing frames are fixed to the outer wall of the bottom of the filtering box through bolts. By arranging a first electric push rod and a pressing plate, soil can be extruded through external force, and a filtering plate can increase the filtering rate of large particles such as stones in the soil.

The invention discloses a method for obtaining a tri-modal microstructure in dual-phase titanium alloy through furnace cooling. The method comprises the following steps of: carrying out heat insulation water cooling at near beta temperature; carrying out heat insulation furnace cooling in a common two-phase region and carrying out heat insulation air cooling in a two-phase region at lower temperature. 10-20% of primary equiaxial alpha phases are remained in a titanium alloy microstructure through carrying out heat insulation water cooling at near beta temperature, and the rests are martensites. A test sample microstructure is changed into alpha equal axle, alpha thick silvers and beta residues through carrying out heat insulation furnace cooling in the common two-phase region. The titanium alloy with the tri-modal microstructure is obtained through carrying out heat insulation air cooling in the two-phase region at lower temperature. The method is free of near beta thermal deformation, deformation and nonuniform thermal effect and easy for temperature control, and a dual-modal microstructure can be obtained without carrying out special pretreatment on a primary equiaxial microstructure of the titanium alloy. The method is simple, convenient, feasible and wide in application rang and can be widely used for thermal treatment of titanium alloy parts manufactured by using methods such as rolling, squeezing, machining, forming and the like so as to obtain the tri-modal microstructure.

The invention discloses a reaction kettle with omni-directional cleaning and drying functions for chemical machinery and belongs to that technical field of chemical machinery. The reaction kettle comprises a reaction shell and a liquid inlet, the top of the reaction shell is provided with a sealing cover, the liquid inlet is arranged at the left and right ends of the sealing cover, the sealing capand the liquid inlet are poured and assembled. The top of the sealing cap is fixedly provided with a first fixing frame by welding, and the interior of the first fixing frame is provided with a motor, and the interior of the reaction shell is provided with a mounting plate. The invention has the advantages that the reaction kettle with omni-directional cleaning and drying functions for chemical machinery is provided with a spray assembly, when the reaction liquid inside the reaction shell is taken out after a plurality of processes, a part of the reaction liquid will remain inside the reaction shell. Under the cooperation of continuous water supply of the connecting water pipe, the device uses the spray assembly to take out the liquid to clean the remaining chemical components inside thereaction shell.

The invention discloses a vacuum thermal forming production process for fired mold precision manufacturing. The process comprises the following steps: fired mold manufacturing, wax mold manufacturing,dewaxing, roasting, intermediate alloy manufacturing, crucible filling, fired mold filling, vacuum smelting, pouring, furnace charging, fired mold eliminating and the like. By smelting and demoldingan alloy material in a vacuum environmental condition, the production process is simple and has the advantages that the metal utilization ratio is improved obviously, the fired mold has good mold filling performance, the casting quality is improved continuously, the cost is saved and the integral efficiency is improved, and the pouring condition is improved positively, and mechanization is achieved. The process provided by the invention can improve or overcome defects that in existing alloy casting, the casting is poor in quality, mechanical property and conducting performance, severe in casting loss and the like obviously, and solves the problem that part of metal elements are easily oxidized in atmosphere, a molten alloy is poor in mobility, great in viscosity, easy to bond and the like,so that the quality of the alloy casting is improved greatly. The casting product produced is more stable in dimension and higher in precision.

The invention discloses an anti-torsion cable with fireproof function, comprising an outer sheath (1), an inner sheath (3) arranged in the outer sheath (1), a plurality of cable sheaths (4) arranged in the inner sheath (3) and a cable core (5) arranged in the cable sheaths (4); the inner surface of the outer sheath (1) is provided with a plurality of grooves A, the outer surface of the inner sheath (3) is provided with a plurality of grooves B that are in one-to-one correspondence with the grooves A, the grooves A and the grooves B cooperate to form cavities, a stiffener (2) is mounted in each cavity, and a fireproof layer (6) is provided outside the outer sheath (1). The anti-torsion cable has the advantages that relative rotation between the outer sheath and the inner sheath can be prevented by using the stiffeners so as to improve torsion strength and avoid abrasions between the inner sheath and the outer sheath, the stiffeners can be arranged to provide enhanced mechanical strength for the cable, and the fireproof layer can be arranged to impart good thermal insulation and fireproof property to the cable.

The invention provides a method of acquiring a tri-modal microstructure in a near-alpha titanium alloy through furnace cooling. According to the method, near-beta temperature heat-insulating water cooling and two-phase region temperature heat-insulating furnace cooling and air cooling are carried out so as to obtain the near-alpha titanium alloy with the tri-modal microstructure; 10 to 20% of an equiaxial primary alpha phase can be retained in a titanium alloy microstructure through the near-beta temperature heat-insulating water cooling, with the balance being martensite; and a tri-modal microstructure titanium alloy consisting of equiaxial alpha, sliver alpha and a beta transformation microstructure is finally formed through the two-phase region temperature heat-insulating furnace cooling and air cooling. The method provided in the invention needs no near-beta thermal deformation and does not generate non-uniform deformation heat effects, temperature can be easily controlled, and special pretreatment does not need to be carried out on the equiaxed-structure near-alpha titanium alloy so as to acquire a duplex microstructure. The thickness value of secondary flake alpha in the invention is in a great adjustable range; the method is simple and easy to implement, has a wide application scope and is applicable to heat treatment of near-alpha titanium alloy parts manufactured by using methods like rolling, extrusion and machining molding.

The invention discloses a cable with high torsion resistance. The cable comprises an outer sheath (1), an inner sheath (3) arranged in the outer sheath (1), a plurality of cable sheaths (4) arranged in the inner sheath (3), and cable cores (5) arranged in the cable sheaths (4), wherein a plurality of A grooves are formed in the inner surface of the outer sheath (1); B grooves in one-to-one correspondence with the A grooves are formed in the outer surface of the inner sheath (3); the A grooves are matched with the B grooves to form a cavity; and reinforcing pieces (2) are arranged in the cavity. The cable has the beneficial effects that the reinforcing pieces are arranged in the cavity, the reinforcing pieces can reach a blocking effect, and the outer sheath is prevented from rotating relative to the inner sheath, so that the torsion resistance of the cable is improved, the abrasion occurring between the inner sheath and the outer sheath is avoided, the service life of the cable is prolonged, the mechanical strength of the cable can be further strengthened through the arrangement of the reinforcing pieces, and the tensile capacity of the cable can be improved.

The invention provides an iron base hardfacing flux-cored wire containing a superfine carbide hard phase and belongs to the field of welding materials. A stainless steel band is adopted for wrapping metal powder. The iron base hardfacing flux-cored wire containing the superfine carbide hard phase comprises the following elementary compositions in percentage by weight: 8.6-20.2% of Cr, 1.2-4.1% of B, 0.5-2.4% of Nb, 0.47-1.9% of C, 1.86-2.9% of Mn, 1.5-2.5% of Si and the balance of Fe. The filling rate of the flux-cored wire is 22-27%; surfacing alloy is prepared by virtue of adopting carbon dioxide gas protective welding; the welding parameters are as follows: the welding current is 180-230A, the voltage is 22-28V, the wire feed speed is 420-480mm / min, the gas flow rate is 17-22L / min, and the length, extending out of a current contact nozzle, of the flux-cored wire is 15-28mm. The rigidity of the iron base hardfacing flux-cored wire alloy is up to 66HRC, the alloy has favorable toughness and rigidity matching, can be used for improving the abrasive resistance, and is especially excellent in abrasive resistance under an impact working condition; the surfacing manufacturability is good; no cracks are generated in a welding process, and formation of weld is attractive.

The invention provides a micro-foaming polypropylene material and a preparation method thereof, which relate to the technical field of foaming plastic. The micro-foaming polypropylene material is prepared by the following raw materials: an endellite nano-material, a microcapsule foaming agent, and modified polypropylene. The raw materials are uniformly mixed, an injection moulding method is employed, and the micro-foaming polypropylene material is prepared under twice-open molding condition, and the micro-foaming polypropylene material has the advantages of compact, uniform and fine foam holes, and excellent mechanical property.

The invention discloses a bamboo rolling machine with a pressure adjusting function and belongs to the technical field of bamboo processing. The bamboo rolling machine comprises a rack, a conveying mechanism, a driving mechanism and a rolling mechanism. Fixed screws are arranged on the rack. The conveying mechanism comprises a plurality of conveying rollers. The two ends of the conveying rollers are all fixedly connected with the two fixed screws through first bearing seats. The driving mechanism is in transmission connection with the conveying mechanism. The rolling mechanism comprises a plurality of rolling barrels and a plurality of pressure adjusting devices. The two ends of the rolling barrels are all movably connected with the two fixed screws through second bearing seats. The pressure adjusting devices are located over the second bearing seats. Each pressure adjusting device comprises two elastic parts, a movable plate, a fixed plate and an adjusting screw. The pressure adjusting devices adjust the distances between the fixed plates and the movable plates by rotating the adjusting screws, and then elastic force of the elastic parts located between the second bearing seats and the movable plates is adjusted. Through the bamboo rolling machine, the problem that an existing bamboo rolling machine has a bad rolling effect on bamboo pieces is solved.

The invention discloses a zinc-nickel electroplating additive and a preparation method thereof. The zinc-nickel electroplating additive is prepared from raw materials by following weight part: brightener, enhancer, complexing agent, coordination agent, surfactant and the balance of water, wherein the brightener comprises epoxy chloropropane, hexamethylene tetramine, mercapto benzimidazole, saccharin sodium, vanillin and 4-methyl benzaldehyde. The zinc-nickel electroplating additive is adsorbed onto the surface of an electrode so as to play a part in inhibiting electric discharge of zinc coordination ions and nickel coordination ions, uses a reaction product of the epoxy chloropropane, the hexamethylene tetramine and the mercapto benzimidazole as main brightener, uses the 4-methyl benzaldehyde as auxiliary brightener, uses the vanillin as second class brightener and leveling agent, can obtain a bight and fine coating, and also can obtain a pinhole-free coating, and follow-up salt fog tests on the surface of the coating prove that the zinc-nickel electroplating additive has good adhesion strength to the zinc-nickel coating, and has good corrosion resistance.

The invention provides a micro foaming polypropylene material and a preparation method thereof, and relates to the technical field of a high polymer material. The micro foaming polypropylene materialis prepared from the following raw materials including polypropylene, nanometer montmorillonite, foaming master batch, anti-oxidants, toughening agents and lubricating agents. The micro foaming polypropylene material has the advantages of good heat shaping performance and good foaming performance; the nanometer montmorillonite is added into the raw materials; the material per se is used as a nucleating agent, so that the crystallization time of the polypropylene is greatly shortened; secondly, the nanometer montmorillonite has the fiber enhancing function; the polymer system rigidity can be enhanced; the melt flowability is reduced; in the foaming process, the foam hole supporting effect can be achieved; the melt intensity of polypropylene is improved; the foaming rate of the polypropylenematerial is greatly improved.

The invention belongs to the technical field of edible fungus cultivation and particularly relates to an efficient disease-preventing auricularia polytricha culture medium and a preparation method thereof. The culture medium comprises, by weight parts, 20-30 parts of broken wood shavings, 10-20 parts of trichoderma anti-mildew agent, 8-20 parts of soy sauce waste residue, 8-15 parts of hull of water chestnut, 8-15 parts of lotus seed hulls, 5-15 parts of banana stem, 1-10 parts of ambrosia trifida, 1-5 parts of rape flower straw and 1-5 parts of cottonseed hull and the like. The method comprises a step (1) of raw material processing, a step (2) of fermentation treatment, a step (3) of charging processing and a step (4) of sterilization processing. The formula design of the culture medium is more suitable for growth of auricularia polytricha, so that auricularia polytricha is bright red compared with fresh agaric, and the quality of the whole auricularia polytricha is improved. Part of raw materials of the culture medium are agricultural and industrial waste, the cost is low, so that the production cost is reduced, a novel handling way is provided for handling the agricultural and industrial waste, and the culture medium is economical and environmentally friendly. The preparation process is simple and easy to popularize.

The invention discloses a multifunctional water-based paint and a preparation method thereof. The preparation method comprises the following steps: adding water to sulfamate, heating, stirring to dissolve the sulfamate, cooling to room temperature, adding water-soluble organophosphate, carrying out idle circulation by a circulating filtering machine, filtering, and storing the filtrate for later use; and respectively milling inorganic silicon and ammonium polyphosphate by a ball mill, putting the inorganic silicon and ammonium polyphosphate into the filtrate, and evenly stirring to obtain the multifunctional water-based paint. After the paint disclosed by the invention is applied onto a thermal insulation material, the flame retardancy time exceeds 60 minutes, the carbonization volume is lower than 5cm<3>, and the limiting oxygen index exceeds 60%. After the paint disclosed by the invention is applied to a polyurethane board twice, the polyurethane board can not be deformed or burnt after being subjected to a high temperature of 300 DEG C for 60 minutes. Since the high-temperature-resistant flame-retardant paint disclosed by the invention has strong heat absorptivity, the paint has a certain inhibition function on the heat transfer of the outside, thereby achieving the effect of heat insulation. When the paint provided by the invention is applied to a thermal insulation material, a temperature difference of 2-5 DEG C can be effectively generated.

The invention provides an antibacterial film coating member with a lasting antibacterial effect. The antibacterial film coating member comprises a base material, a bottom coating formed on the surface of the base material and several nickel-chromium-nitrogen layers and several copper-silver-cerium alloy layers formed on the surface of the bottom coating. The several nickel-chromium-nitrogen layers and the several copper-silver-cerium alloy layers are alternatively arranged. According to the antibacterial film coating member, part of the copper-silver-cerium alloy layers is embedded into the nickel-chromium-nitrogen layers by the utilization of the loose porous structure of the nickel-chromium-nitrogen layers, rapid dissolution of copper, silver and cerium ions in the copper-silver-cerium alloy layers is obstructed, so as to relieve dissolution of the copper, silver and cerium ions and endow the copper-silver-cerium alloy layers with a long-acting antibacterial effect. In addition, the invention also provides a preparation method of the antibacterial film coating member.

The invention discloses a method for preparing inorganic-organic composite electronic iron microcapsules. The method adopts acid nanometer silica sol as solid stabilizers, electrophoresis suspending liquid is stabilized, water-soluble anion initiating agents are added, the temperature is raised to the decomposition temperature, mixed monomers are dripped for conducting heterogeneous polymerization, generated polymers are covered on the liquid drip surface of the electrophoresis suspending liquid, and the inorganic-organic composite electronic iron microcapsules are formed. The method has the advantages that silica sol with low cost and wide sources is adopted as one of capsule wall materials, the electronic iron cost is reduced, and in addition, the heat resistance, the chemical resistance and the barrier performance of the capsule wall are improved. Through regulating the mixing proportion and the kinds of monomers, the use requirements of flexible display electronic paper can be met.

The invention discloses an adjustable treatment device for the digestive system department. The device comprises a machine body, a fixed disc is fixed to one side of the outer wall of the machine body, the fixed disc is sleeved with a rotary disc, connecting grooves are formed in the two sides of the surface of the fixed disc, one end of the rotary disc is inserted into the connecting grooves to be connected to the fixed disc, mounting grooves are formed in the inner side of the rotary disc, limiting blocks are arranged in the mounting grooves, and tooth grooves are formed in the side wall ofthe fixed disc. Through the designed rotary disc, the rotary disc freely rotates on the fixed disc, so that a connecting wire is conveniently wound and stored, and the situation that the connecting wire is easily damaged due to the fact that the connecting wire is directly placed on the ground traditionally is avoided. Through the designed limiting blocks, the limiting blocks are clamped in the tooth grooves, a certain hindering effect is achieved on the rotary disc, and the situation that the connecting wire drives the rotary disc to loosen under the action of the gravity of the connecting wire due to excessively flexible rotation is avoided.

The invention discloses an oil seal cooling device applied to a vent hole of a gearbox. The oil seal cooling device comprises a installing column internally provided with a through hole, the through hole of the installation column communicates with the vent hole of the gearbox, the through hole of the installation column is a variable-diameter type pore passage, a caliber of the upper part of the through hole is large, an insert is arranged in the through hole of the installing column from the hole opening at the upper part, and the insert is clamped in the middle of the through hole of the installing column; and the insert is of a cover-shaped structure, the top surface of the insert is sealed, exhaust holes are formed in the periphery of the bottom of the insert, an exhaust gap is reserved between the insert and the hole wall of the installing column, the installing column is used for connecting the interior of the gearbox with external atmosphere, the high-temperature oil steam inside the gearbox is discharged, and providing an oil gas drainage channel; and the function of the insert is that a flowing path of oil gas is changed, the oil gas flowing distance is prolonged, the oil gas temperature is fully reduced, and the oil gas is fully condensed and then flows back to the gearbox. According to the oil seal cooling device, split type machining and combining are adopted, the structure is compact, the oil leakage prevention effect is obvious.