577 results about "Gear oil" patented technology

The invention relates to the technical field of electric vehicles, and provides a cooling system for a hub motor, the hub motor and an electric vehicle, the cooling system for the hub motor comprises a base and a transmission shell, the base is internally provided with a first cavity and a second cavity, the second cavity is provided with a gear transmission assembly, the side wall of the first cavity is provided with a first cooling liquid flow channel, and the side wall of the second cavity is provided with a second cooling liquid flow channel; a second cooling liquid flow channel is formed in the side wall of the second cavity; the transmission shell is of a cylindrical structure with the first end open and the second end closed, the transmission shell is arranged outside the second cavity in a sleeving mode, the first end of the transmission shell is rotationally connected with the machine base in a sealed mode, the transmission shell is connected with the hub, an oil cavity is formed between the inner side wall of the transmission shell and the outer side wall of the machine base, and the oil cavity is communicated with the second cavity. Through the arrangement, the second cooling liquid flow channel can be used for cooling the second cavity, gear oil in the second cavity can enter the oil cavity, and the second cooling liquid flow channel can also be used for cooling the gear oil in the oil cavity, so that the problem of over-temperature failure of the motor and the gear can be avoided.

The invention relates to the technical field of intelligent oil injection control, in particular to a limited slip differential gear oil performance directional optimization method and system.The limited slip differential gear oil performance directional optimization method comprises the following steps that the temperature rise rate is collected through a temperature sensor to calculate the gear shaft elongation, and a meshing clearance trend vector is generated by combining differential temperature time sequence analysis; the stability correction is calculated by fusing oil film thickness data, the injection angle compensation driving servo motor is solved based on vector projection, the adhesion factor index is constructed by coupling the oil injection feedback and the oil film difference, the oil product meeting the tension condition is switched when the limit is exceeded, and the lubrication recovery performance is evaluated. According to the method, gear shaft temperature rise and differential mechanism temperature gradient data are collected in real time, meshing clearance accurate prediction is achieved by combining expansion coefficient analysis, stability judgment is improved by fusing oil film thickness data, jet precision is optimized based on a vector projection dynamic compensation jet angle, and an adhesion factor index containing a phase difference is constructed to achieve lubrication attenuation early warning. And oil products are accurately switched by dynamically matching tension and viscosity threshold values, so that friction loss is reduced.

The utility model relates to the technical field of extruder gearboxes, discloses a multistage stable transmission type double-screw extruder gearbox, solves the problem that lubricating oil is inconvenient to coat in the transmission process, and comprises a gearbox main body, an oil injection mechanism used for injecting oil into an internal gear is arranged in the gearbox body and comprises an oil storage box, a bottom groove is formed in the bottom face of the oil storage box, a compression rod is slidably connected into the bottom groove, a compression chamber is formed in the oil storage box, and one end of the compression rod is fixedly connected with a compression plate. A limiting plate is slidably connected into the inner groove, a sliding block and an extrusion plate are fixedly connected to one side of the limiting plate, a liquid storage chamber is further arranged in the oil storage box and filled with lubricating oil, a pressure valve is fixedly connected to the bottom face of the inner wall of the liquid storage chamber, and a liquid conveying pipe and an atomization nozzle are fixedly connected to the bottom face of the oil storage box. The effect of conveniently lubricating the gear in the transmission process is achieved.

The invention relates to the technical field of gear oil injection, and provides a power plant coal mill bull gear oil spraying device which comprises an oil storage tank used for storing oil, one side of the oil storage tank is communicated with a pump body provided with two liquid outlets, the two liquid outlets of the pump body are communicated with a spraying assembly in a coal mill gearbox through oil injection pipes, and the spraying assembly is communicated with the oil storage tank. The spraying assembly is driven by an electric push rod to be stored, a cavity is formed in the other side of the oil storage tank, a motor is installed in the cavity, and two cooling pipes in the oil storage tank are located on the outer wall of the motor in a spiral mode so that energy transmission between the cooling pipes and the motor can be achieved. The phenomenon that the spray head is blocked due to exposure in air is avoided, the spraying efficiency of lubricating oil is ensured, meanwhile, the flowability and the lubricating performance of the lubricating oil are ensured through energy conversion, the lubricating effect is improved, gear abrasion is reduced, the service life of the gear is prolonged, and on the contrary, a certain cooling effect can be achieved on the motor.

The invention discloses a power generation and driving integrated device with an active lubricating system. The power generation and driving integrated device comprises a motor shell, a motor, a planetary gear mechanism, a transmission gear set, a filter, an electronic pump, a flywheel shell and a motor shell cover plate. The motor shell comprises a motor cavity for accommodating the motor and a gear cavity for accommodating the planetary gear mechanism and the transmission gear set, the flywheel shell seals the gear cavity, and the motor shell cover plate seals the motor cavity; the bottom of the gear cavity is divided into an oil suction cavity through a motor shell oil separation rib, an oil return groove is formed in the connecting position of the motor shell oil separation rib and the bottom of the gear cavity, the filter is contained in the oil suction cavity, the electronic pump partially stretches into the oil suction cavity and is connected with the filter, and an oil outlet of the filter is communicated with an oil inlet of the electronic pump. According to the invention, stable active lubrication of parts with lubrication and cooling requirements, such as shafts, gears, bearings, motors and the like, is realized. Meanwhile, gear oil stirring can be reduced, and the speed reducer efficiency is improved.

A liquid composition for providing enhanced lubrication and wear protection, particularly under high-performance and / or extreme-pressure conditions. The composition comprises components that are either solubilized, liquified, or sub-micronized, and are formulated to result in a stable, color-tunable composition that can be stored or implemented over extended periods of time without separation of solid components from the liquid. A composition can either be a lubricant in which the solubilized, liquified, or sub-micronized components are comprised within a base oil, or an additive composition in which the components are formulated to be later added to a base oil. Suitable base oils are industrial, automotive, or open gear oils such as those used in the oil and gas industry, sugar mills, or in rock crushers; rock drill, pneumatic, and air tool oils; anti-seize compounds; cutting, gun, engine, air compressor, or bearing oils; slideway lubricants; and oven, kiln, foundry, metalworking, metalforming, or aerospace lubricants.

The utility model discloses a hydraulic control valve which comprises a valve body, an oil pump and a conversion check valve. A gear shifting oil cavity is formed in the valve body, a slidable gear shifting piston is installed in the gear shifting oil cavity, and the moving positions of the gear shifting piston comprise the low-speed gear position and the high-speed gear position. Working oil passing through the low-gear oil inlet can apply pressure to one end of the gear shifting piston, and the engine can apply pressure to the other end of the gear shifting piston through the oil pump. The shift piston is controlled to move through pressure at two ends of the shift piston; when the gear shifting piston is kept at the high-gear position, working oil can enter the high-gear oil inlet of the gearbox only through the high-gear oil outlet by switching the check valve. By means of the arrangement, the defects of an original hydraulic downshift control mechanism are overcome, interlocking of gears and the rotating speed of an engine is achieved, and it is guaranteed that the gear shifting process is stable and smooth, and continuous power output is achieved.

The invention discloses equipment and process for producing gear oil for Fischer-Tropsch synthesis long-mileage vehicles, and relates to the field of lubricating oil blending production, in particular to the equipment and process for producing the gear oil for the Fischer-Tropsch synthesis long-mileage vehicles, the equipment comprises a blending kettle, a stirring rod, a temperature sensor and a processing mechanism used for heating, stirring and pressure relief, and the blending kettle comprises an outer shell and an inner shell; the stirring rod is vertically arranged in the inner shell; the processing mechanism is composed of a driving assembly, a heating assembly and a pressure relief assembly, the driving assembly is used for controlling the inner shell and the stirring rod to rotate, and the heating assembly is used for heating extracted external air and feeding the heated air into the space between the outer shell and the inner shell; by adopting an indirect heating mode, the temperature can be more accurately controlled, the problem of local overheating possibly caused by direct contact heating is reduced, the temperature of the lubricating oil can be kept uniform, and the situation that additives such as an anti-wear agent and a preservative in the lubricating oil lose effect due to local overheating, and consequently the performance of the lubricating oil is reduced is avoided.

The invention relates to the technical field of design of an air suction prevention scheme for a hydraulic rocker gear oil cooling circulating pump of a coal mining machine, in particular to an air suction prevention method for the hydraulic rocker gear oil cooling circulating pump of the coal mining machine and the coal mining machine. Aiming at the problem of air suction damage of a circulating pump caused by change of the inclination angle of the rocker arm, oil suction ports are formed in the lowest liquid level positions of the positive and negative inclination angles of the rocker arm respectively, the inclination angles are monitored in real time through an angle sensor, and an electric control box controls an electric proportional reversing valve to act according to inclination angle signals and drives a hydraulic control reversing valve to be switched to a corresponding working position. And the gear oil circulating pump is always communicated with the current lowest liquid level oil suction port. According to the scheme, the pumping air corrosion risk is thoroughly eliminated, the service life of the pump body and the gear set is prolonged, and meanwhile system energy consumption is reduced. According to the preferable scheme, the filter and the cooler are integrated to form a closed-loop purification cooling loop, and the cleanliness and the thermal stability of the oil are further guaranteed. According to the invention, the adaptability defect of the fixed oil suction port under the dynamic dip angle working condition is overcome, and reliable guarantee is provided for high-load continuous operation of the coal mining machine.

The invention provides a copper-nickel alloy friction film based wind power gear oil additive composition and a preparation method thereof, belongs to the technical field of lubricating oil, and aims to solve the technical problems of low bearing capacity and poor antifriction effect of a friction film formed by wind power gear oil. The wind power gear lubricating oil comprises the following components in percentage by mass: 0.8%-1.4% of a sulfur-containing extreme pressure agent, 0.4%-1.0% of a phosphorus-containing anti-wear agent, 0.5%-1.5% of copper nanoparticles, 0.5%-1.0% of nickel acetylacetonate, 0.15%-0.25% of an antioxidant, 0.1%-0.20% of an anti-rust agent, 0.015%-0.025% of an anti-foaming agent, 0.04%-0.05% of a demulsifying agent, 0.4%-0.8% of a dispersing agent and 93.8%-97.1% of synthetic base oil, and the sum of the percentages of the components is 100%. Nickel acetylacetonate forms high-activity nickel ions under friction induction, the high-activity nickel ions react with a friction pair substrate to form an alloy interface layer, and meanwhile the alloy interface layer and copper nanoparticles form a high-strength copper-nickel alloy friction film through interface alloy.

Provided herein are processes for recycling hydrocarbons in a used high performance lubricant such as wind turbine gear oil. In the present process and methodologies, the used high performance lubricant is not mixed with another type of used oil. The used high performance oil is contacted with a solvent in an extraction process. Contaminates are extracted and circular hydrocarbons are formed. Solvent can be recovered, and the circular hydrocarbon combined with a high performance base stock for use as a high performance lubricant in a mechanical system.

Drive system for a forklift truck with a drive motor 1 and a gearbox 2, partially filled with gearbox oil and arranged in a gearbox housing 3. The gearbox 2 has at least one planetary stage 6, which has a planet carrier 11 with at least one planet gear pin 10 on which a planet gear 9 with a coaxial bore 16 is rotatably mounted. The planet carrier 11 is non-rotatably connected to an output shaft 4, and at least one planet gear 9 can be rotatably driven directly or indirectly by the drive motor 1. The planet gear 9 is rotatably mounted on the planet gear pin 10 by means of a sliding bearing.

The invention discloses a distribution valve for a transmission of a high-horsepower tractor. Comprising a valve body, an oil inlet, an oil return port, a clutch oil port, a working gear oil port, a clutch control slide valve, a clutch oil port and a brake oil port, wherein the oil inlet, the oil return port, the clutch oil port and the working gear oil port are formed in the valve body; the first overflow valve is used for controlling the pressure of the brake oil port, the second overflow valve is used for controlling the pressure of the working gear oil port, and the three-position three-way adjusting slide valve is further included. And the three-position three-way adjusting slide valve is provided with a working oil port, a slide valve oil return port, a slide valve oil inlet and a hydraulic control port which is communicated with the oil inlet and is connected with the slide valve oil inlet in parallel. The device has the characteristics that the oil pressure is accurately controlled, the oil is quickly conveyed, the oil is instantly conveyed to lubricate, cool and protect the device parts, the maintenance cost is reduced, and the normal, stable and efficient work of the tractor is ensured.

The invention relates to the technical field of industrial lubricating oil, in particular to a preparation method of polyether type heavy-load worm and gear oil, which comprises the following preparation steps: S1, synthesizing an intermediate; s2, synthesizing an ionic liquid; s3, compounding is carried out; and S4, carrying out post-treatment. The ionic liquid containing the trifluoromethylsulfonyl imide group and 4, 4 '-dioctyl diphenylamine generate a synergistic effect, the flash point of the polyether type heavy-load worm and gear oil can be increased by 10-30 DEG C, meanwhile, the three technical problems of flash point, oxidation resistance and low-temperature fluidity are solved, and the polyether type heavy-load worm and gear oil is particularly suitable for heavy-load worm gear transmission systems such as wind power gear boxes and metallurgical machinery.

The utility model discloses a gear oil purification system, relates to the technical field of gear oil purification and regeneration, and aims to solve the problems that high-viscosity gear waste oil cannot be treated and is difficult to purify in the conventional purification technology. Comprising a waste oil storage tank, a high-viscosity gear oil pump, an electromagnetic heater, an activated carbon adsorption filtering device, a composite grid filtering device, a supplementary filtering device and a precise impurity removal filtering device, and the high-viscosity gear oil pump is arranged on a pipeline between the waste oil storage tank and the electromagnetic heater. The purification and regeneration device can realize purification and regeneration of L-CKD 460 # heavy-load gear waste oil and higher-viscosity gear waste oil, is high in filtering precision, good in purification and regeneration effect and high in purification and filtering efficiency, and solves the technical problems that the high-viscosity gear waste oil cannot be treated and is difficult to purify in the existing purification technology.

The present invention provides a wind power gear oil composition with excellent anti-wear and durability, which comprises, by weight: 1.0-2.0 parts of extreme pressure anti-wear agent; 0.04-0.15 parts of metal deactivator; 0.3-0.8 parts of antioxidant; 0-0.05 parts of anti-foaming agent; 5-15 parts of ester oil; the balance is base oil. Beneficial effects of the present invention: The wind power gear oil composition with excellent anti-wear and durability provided by the present invention has good anti-wear and anti-wear durability performance, anti-oxidation, load-bearing, anti-corrosion, anti-rust, anti-foaming, and anti-emulsification performance, and is suitable for lubricating wind turbine gearboxes with strict requirements on anti-wear and durability performance.

A liquid composition for providing enhanced lubrication and wear protection, particularly under high-performance and / or extreme-pressure conditions. The composition comprises components that are solubilized, liquified, liquefacted, or sub-micronized, and are formulated to result in a stable, color-tunable composition that can be stored or implemented over extended periods of time without separation of solid components from the liquid. A composition can be a lubricant in which the solubilized, liquified, liquefacted, and / or sub-micronized components are comprised within a base oil, or an additive composition in which the components are formulated to be later added to a base oil. Suitable base oils are industrial, automotive, or open gear oils such as those used in the oil and gas industry, sugar mills, or in rock crushers; rock drill, pneumatic, and air tool oils; anti-seize compounds; cutting, gun, engine, air compressor, or bearing oils; slideway lubricants; and oven, kiln, foundry, metalworking, metalforming, or aerospace lubricants.

An outboard motor includes a power source disposed, a propeller shaft, a drive shaft, a gear mechanism, a lower case having an internal space in which gear oil is stored, a gear oil gauge configured to check a level or a state of the gear oil stored in the internal space, a gauge mounting hole provided configured to removably mount the gear oil gauge to the lower case such that one end side of the gear oil gauge is immersed in the gear oil stored in the internal space, a gauge insertion portion configured to insert the gear oil gauge into the gauge mounting hole, an oil supply and discharge passage provided in the lower case, and a pump connecting portion configured to connect a pump. The gauge insertion portion and the pump connecting portion are arranged side by side.

The present invention relates to the field of lubricating oil technology, and in particular to a gear oil composition that can be used in a gearbox of a wind turbine generator set. The gear oil composition comprises: a low-viscosity poly-α-olefin and a high-viscosity synthetic ester; the weight ratio of the low-viscosity poly-α-olefin to the high-viscosity synthetic ester is 1:2 to 4.5; the kinematic viscosity of the low-viscosity poly-α-olefin at 100°C is 2 to 4.5 mm 2 / s; the high viscosity synthetic ester has a kinematic viscosity of 500 to 1500 mm at 40°C 2 The gear oil composition of the present invention has good biodegradability and sealing material compatibility, excellent hydrolysis resistance, low-temperature fluidity, extreme pressure and anti-wear properties, good oxidation stability, corrosion and rust resistance, and demulsification properties, can meet the performance requirements of wind power gearboxes, and is environmentally friendly.

The invention discloses a draught fan main gear oil degradation diagnosis method and system, and the method comprises the steps: carrying out the real-time data collection of the kinematic viscosity of draught fan main gear oil, and carrying out the normalization processing and weighting, and obtaining the standardized value of the kinematic viscosity; carrying out real-time data acquisition on the acid value of the main gear oil of the fan, and carrying out normalization processing and weighting to obtain a standardized value of the acid value; carrying out real-time data acquisition on the fan main gear oil wear element, and carrying out normalization processing and weighting to obtain a standardized value of the wear element; carrying out real-time data acquisition on the fan main gear oil additive dissolution element, and carrying out normalization processing and weighting to obtain a standardized value of the additive dissolution element; determining a degradation index according to each standardized value, and judging whether the main gear oil of the fan is degraded or not and judging the abnormal grade of oil degradation; the method has the advantages that the calculated amount is small, the efficiency is high, and the diagnosis result can be efficiently output.

The invention relates to the field of mechanical equipment, in particular to a worm and gear speed reducer capable of overload protection, which comprises a pump shell, an input shaft and an output shaft, the input shaft and the output shaft are both mounted in the pump shell through bearings, a worm on the input shaft is in meshed connection with a worm gear on the output shaft, and the pump shell is filled with gear oil. The pump further comprises a leakage monitoring mechanism, an overload monitoring mechanism and a heat dissipation mechanism. The leakage monitoring mechanism and the overload monitoring mechanism are both vertically installed on the upper surface of the pump shell. The heat dissipation mechanism is fixedly connected to the rear side of the pump shell. The box body is mounted on the upper surface of the pump shell; the oil cylinder is vertically installed at the left end of the upper surface of the box body and filled with gear oil. The gear oil pump has the pump shell leakage monitoring function, gear oil is supplemented, maintenance by workers is facilitated, heat dissipation and noise reduction are guaranteed, overload and overtemperature can be physically monitored, the double heat dissipation effect is achieved, gear oil viscosity reduction is prevented, abrasion between an input shaft and an output shaft is reduced, and the service life is prolonged.

In one embodiment, the melamine-based compounds are suitable as corrosion inhibitors for lubricating compositions, in particular for lubricating oils for transmission oils (manual, automatic, dual clutch or electric), axle fluids, differential oils, tractor oils, industrial gear oils, and / or other gear-based applications. The melamine-based compound is in the form of an oil-soluble hydrocarbyl-substituted melamine derivative comprising the reaction product of reacting a hydrocarbyl-substituted succinic anhydride with melamine under conditions effective to form a hydrocarbyl-substituted melamine polycarboxylic acid or anhydride compound.

The utility model discloses an automatic gear oiling machine, and belongs to the technical field of gear machining equipment. The gear oiling device structurally comprises a feeding frame, a discharging frame and a gear oiling set, an automatic gear oiling technology is adopted, a gear to be machined is placed in the gear oiling set, automatic limiting-oiling operation is carried out on the gear, labor loss of workers is effectively reduced, the gear oiling work efficiency is improved, and the gear oiling device is suitable for large-scale production. And meanwhile, the oil dripping quantity of the gear can be more uniform, and the situation that the oil dripping quantity of the gear is not uniform is avoided.

The utility model relates to the technical field of gear oil pumps, and discloses an anti-abrasion device of a gear oil pump, which comprises a lower pump body, an upper pump body is adjacently arranged above the lower pump body, a driven gear is rotatably connected inside the upper pump body, a motor is fixedly connected to one side of the outer wall of the lower pump body, a driving gear is fixedly connected to the output end of the motor, and the driving gear is fixedly connected to the other side of the outer wall of the lower pump body. The driving gear is in meshed connection with the driven gear, a plurality of tooth ends are fixedly connected to one side of the outer wall of the driving gear and one side of the outer wall of the driven gear, an oil outlet groove is formed in the driven gear, the upper end of the oil outlet groove is close to the tooth ends, and the lower end of the oil outlet groove is large and the upper end of the oil outlet groove is small. The oil storage tank is used for storing lubricating oil. According to the gear, the oil outlet groove, the oil inlet groove and the oil storage groove are matched with one another, so that lubricating oil enters the space between the two tooth ends, the effect that the gear always keeps lubricating during rotation is achieved under the action of the wear-resistant material, and the wear resistance is improved.

The present disclosure relates to an electric machine assembly having an internal lubricant passage. The motor assembly comprises a bearing cover plate and a motor end cover, according to the transmission direction of lubricating oil, the bearing cover plate is installed on the downstream of the gear box in the axial direction, and the motor end cover is installed on the downstream of the bearing cover plate in the axial direction. The bearing cover plate is provided with an oil collecting groove, the oil collecting groove extends in the circumferential direction of the bearing cover plate and is provided with an opening pointing outwards in the radial direction, the opening is used for receiving lubricating oil which comes from a gear box and is brought out through gear oil stirring operation, and the groove wall, axially adjacent to one side of the motor end cover, of the oil collecting groove is provided with at least one oil outlet. And the oil outlet is used for guiding the collected lubricating oil out of the oil collecting groove. The motor end cover is provided with at least one through oil guide channel, and the oil guide channel is arranged corresponding to the oil outlet and used for conveying one part of lubricating oil guided out of the oil outlet to the balance plate of the rotor and conveying the other part of the lubricating oil to the driving end bearing.

The utility model relates to the field of gear oil pump manufacturing, in particular to punching equipment for gear oil pump manufacturing, which comprises a workbench, two clamping assemblies are symmetrically arranged on the workbench, a sliding plate is arranged between the two clamping assemblies, first horizontal gears are arranged at two ends of the sliding plate, a transmission assembly is arranged between the two first horizontal gears, and a second horizontal gear is arranged between the two first horizontal gears. The sliding plate, the transmission rod, the first horizontal gear, the rack, the second horizontal gear and other components are arranged, and the transmission rod component, the first bevel gear component and the second bevel gear component are matched with one another in the working process; the two first horizontal gears on the sliding plate rotate in the same direction, the two racks move relatively through mutual cooperation between the rack component and the second horizontal gear component, the two clamping assemblies can synchronously clamp different positions of a part by controlling the sliding plate to move, and the stability in the working process is improved.

The application provides a floor grinding machine gear box guide plate structure parameter optimization design method, which is used for determining the optimal values of three radial clearances between the guide plate and the gear tooth top. Firstly, a parameterized gear box model containing clearance as a variable is constructed, and a gear oil stirring loss theoretical model is established based on the boundary layer theory and the fluid resistance theory; taking the maximum lubrication efficiency as the target and the oil stirring power loss not exceeding the set threshold as the constraint condition, a central composite design method is used to select representative sample points in the design space; through computational fluid dynamics simulation, a moving particle semi-implicit method is used for splash lubrication transient analysis to obtain performance data of each point; based on the simulation data, a high-precision proxy model is constructed; finally, under the condition of meeting the oil stirring power loss constraint condition, the maximum lubrication efficiency is taken as the target for optimization solving to obtain the optimal clearance combination. The method realizes the quantitative design from parameters to performance, and effectively replaces the traditional trial and error method.

The utility model discloses a sealing structure of a steering gear oil cylinder, which belongs to the technical field of sealing of steering gear oil cylinders and comprises a shaft steel wire baffle ring, an oil cylinder oil seal iron sleeve, a sealing rubber ring, a supporting sleeve, a high-pressure framework oil seal, a rack assembly and a steering gear assembly. The device is novel in design and ingenious, the annular groove is formed in the inner wall of the steering engine in advance, then a spring steel structure is adopted to be connected with the annular groove in a clamped mode, and therefore the aluminum blocking structure at the end of the steering engine oil cylinder shell is effectively locked, meanwhile, the high-pressure oil seal is additionally arranged on the other side of the blocking structure, and the sealing effect is good. The outer wall of the blocking structure is sleeved with the two sets of sealing rubber rings to enhance the sealing effect on oil, the two sets of sealing rubber rings and the high-pressure oil seal can achieve the purposes of shock absorption and noise reduction, the oil sealing performance of the steering engine oil cylinder shell is improved, the machining difficulty of the steering engine shell is reduced, the production and installation efficiency is improved, and the service life of the steering engine oil cylinder shell is prolonged. Therefore, the purpose of prolonging the service life of the steering engine can be achieved.

The utility model discloses a high-speed rail gear box respirator, which belongs to the technical field of gear breathing boxes, and comprises a valve body, the bottom of the valve body is provided with a thread structure, a breather pipe is fixedly connected in the valve body, the breather pipe is provided with a first vent hole, a second vent hole and a third vent hole, and the first vent hole, the second vent hole and the third vent hole are fixedly connected in the valve body. By means of the first-stage filter and the second-stage filter, it can be guaranteed that internal oil liquid does not run outwards along with gear oil, it can be guaranteed that external air does not enter a gear box, and therefore the cleanliness in the gear box is not affected; a first vent hole, a second vent hole and a third vent hole are formed and can be suitable for air circulation under different operation conditions of the high-speed rail, the practicability of the device is improved, then the device is conveniently installed through a thread structure, and the sealing performance of the device in the using process is improved through a circular ring and a sealing ring in a second groove.

The invention discloses a fan main gear wear degree diagnosis method and system, and the method comprises the steps: carrying out the collection and normalization processing of a gear oil moisture value and a 40 DEG C kinematic viscosity data value, and obtaining a gear oil moisture normalization value and a 40 DEG C kinematic viscosity normalization value of the gear oil; acquiring and normalizing the acid value of the gear oil and the contents of iron, copper and phosphorus in the gear oil to obtain normalized values of the acid value, the content of the iron element, the content of the copper element and the content of the phosphorus element of the gear oil; performing weighted summation on the normalized values of the moisture of the gear oil, the kinematic viscosity of the gear oil at 40 DEG C, the acid value, the iron element content, the copper element content and the phosphorus element content to obtain a gear wear index; according to the gear wear index, judging whether the gear wear degree of the main gear box affects use and wear degree grades, and giving corresponding suggestions; the method has the advantages that the abrasion degree can be truly and reliably reflected, and stable and safe operation of the whole wind driven generator is guaranteed.