43results about How to "Extended lubrication time" patented technology

A self-lubricating assembly for a linear driving device comprises an oil applying subassembly, an oil transmitting subassembly and an oil container. The oil transmitting subassembly transmits lubricating oil from the oil container to the oil applying subassembly, and the oil applying subassembly is driven by the linear driving device to perform lubricating action automatically. The oil container is provided for storing lubricating oil to prolong lubricating time of the linear driving device.

The invention discloses a preparation method of a porous wear-resistant thermal spraying ceramic coating, and belongs to the technical field of wear-resistant coating materials. The preparation methodcomprises the steps that a bonding layer Ni-Co-Cr-Al-Y alloy with the thickness of 70-100 microns is sprayed on a pretreated metal substrate by adopting a plasma spraying method, and then a plasma spraying method is adopted to spray a wear-resistant ceramic layer on the surface of the bonding layer Ni-Co-Cr-Al-Y alloy, wherein the bonding layer Ni-Co-Cr-Al-Y alloy comprises, by mass, 0.01-10% ofCo, 0.01-24% of Cr, 0.01-2% of Y, 7-12% of Al and the balance Ni. According to the preparation method, the microstructure of the coating is changed, and specially wear-resistant ceramic coating sheetsor blocks is converted into particles, and micro-holes are formed in the ceramic layer; and the abrasive resistance of the coating can be enhanced by the particles of the hard phase in the ceramic layer, the micro-holes facilities the storage of a lubricating liquid, the lubricating time of a workpiece is prolonged, moreover, a residual hole-forming lubricant in the granular ceramic layer can beself-lubricated, then the lubricating effect of the coating is enhanced, the lubricating and wear-resisting effects of the wear-resistant coating can be greatly enhanced, the comprehensive mechanicalproperty of the coating is improved, and the service life of the coating is prolonged.

The invention relates to a hard thin film and a preparation method thereof and belongs to the technical field of coating. By adoption of the physical vapor deposition technology and the ionic nitriding technology, a nitride layer and a W / Mo-doped multi-element compound CrTiAlN hard thin film are formed on the surface of a hard alloy, the surface of the thin film is smooth and flat, the thin film grows in a columnar crystal mode, the texture structure is compact, no obvious defect exists, the area, close to a substrate, of the fracture of the thin film is of an obvious fine crystal structure, the growth direction of the thin film is slightly oblique by means of nitriding treatment and shows predominant crystal orientation to a certain extent, and the abrasion resistance and the bonding strength with the substrate of the CrTiAlN thin film are improved; and meanwhile the thin film is more compact after nitriding is completed, as the element compositions of the thin film show gradient change, continuous transition of the physical and chemical performance and the texture structure of the film layer is achieved, the stress condition of an interface can be relieved, and the abrasion resistance is enhanced.

A self-lubricating assembly for a linear driving device comprises an oil applying subassembly, an oil transmitting subassembly and an oil container. The oil transmitting subassembly transmits lubricating oil from the oil container to the oil applying subassembly, and the oil applying subassembly is driven by the linear driving device to perform lubricating action automatically. The oil container is provided for storing lubricating oil to prolong lubricating time of the linear driving device.

The invention provides a sealing ring chain. By adoption of the sealing ring chain, the problem that existing sealing ring chains are short in service life is solved. The sealing ring chain is formed by sequentially combining a plurality of chain units. Each chain unit comprises two inner chain plates fixed through a shaft sleeve, wherein the outer sides of the two inner chain plates are each provided with an outer chain plate, and the two outer chain plates are fixed through a pin shaft which is sleeved with the shaft sleeve; and a sealing ring is arranged between each inner chain plate and the corresponding outer chain plate which are located on the same side and arranged on the shaft sleeve in a sleeving mode. The two end faces of the sealing rings are each a plane and are separately attached to the inner chain plates and the outer chain plates. The sealing rings are fixed to the inner chain plates through uneven connecting structures. At least two oil storage grooves and grooves which are each in an annular shape are formed in the end faces, making contact with the outer chain plates, of the sealing rings. All the oil storage grooves are concentrically distributed. Each groove is formed between every two corresponding adjacent oil storage grooves. The widths and the depths of the grooves are both larger than that of the oil storage grooves. The sealing ring chain has the advantage of long service life.

The invention relates to composite calcium sulfonate type railway wheel rail lubricating grease that comprises 10-30% of high-base-number calcium sulfonate, 65%-85% of base oil, 0.1%-0.6% of mixed alcohol, 0.2%-0.6% of organic acid, 0.2%-0.7% of 12-hydroxystearic acid, 0.1%-0.4% of boric acid, 0.1%-0.3% of calcium hydroxide, 0.3%-0.8% of antioxidant, 0.1%-0.4% of antirust agent and 0.8%-1.2% of solid additive. The percentage is the mass percentage of the total amount of the lubricating grease as a base number. The preparation method comprises the following steps: adding the high-base-number calcium sulfonate and the base oil into a reaction kettle, and fully stirring; adding water, alcohol and acid, heating to 80-89 DEG C, and keeping the constant temperature for 1-3 hours; adding calciumhydroxide, boric acid and 12-hydroxystearic acid, and compounding at 95-100 DEG C for 0.5-1 hour; raising the temperature to 130 to 150 DEG C and dehydrating; and cooling to 80-90 DEG C, adding an additive, shearing, homogenizing and degassing to obtain the product. According to the invention, the lubricating grease has excellent mechanical stability, extreme pressure antiwear property, water resistance, rust prevention and adhesion, is not hardened after long-term storage, can keep excellent pumpability and injection capacity, adapts to temperature change in south and north winter and summerin China, and can be used in all weathers.

The invention discloses an automatic lubricating device being suitable for a nut-screw transmission mechanism. The automatic lubricating device comprises at least one graphite nut, a baffle, a driving nut and a lead screw, wherein the graphite nut is sleeved on the lead screw, and the baffle and the driving nut are in rigid connection to clamp the graphite nut between the baffle and the driving nut, so that the graphite nut and the driving nut can synchronously move; the graphite nut is arranged in the driving nut, the lubricating device also comprises a torsion spring which is arranged on the graphite nut, and the thread of the graphite nut anticlockwise rotates to be clung to the two sides of the groove of the lead screw; and the cross section of the graphite nut is annular or semi-annual. According to the automatic lubricating device provided by the invention, solid is used for lubrication, the lubrication time is long, the volume is small, the lubrication action is realized by virtue of self motion of the nut-screw transmission mechanism only without maintenance, the structure is simple, the mechanism part is less, the working accuracy requirement is not high, and the maintenance is convenient.

The invention provides a lubricating device for elevator lifting and operating rolling wheels and relates to the technical field of elevator accessories. The lubricating device comprises a supporting frame, a lubricating wheel, a lubricating oil tank and a flow guide pipeline. The lubricating wheel is arranged in front of the supporting frame. A bearing is arranged between the lubricating wheel and the supporting frame. The lubricating oil tank is arranged at the top end of the supporting frame. The lubricating oil tank is transparent. The flow guide pipeline is arranged at the bottom of the lubricating oil tank and is fixed to the supporting frame through a fixing plate. A pipe orifice at the tail end of the flow guide pipeline is arranged over the lubricating wheel in an extending mode. The lubricating device for the elevator lifting and operating rolling wheels is convenient to use, reasonable in structural design, lasting and effective in lubrication, convenient to replace and maintain at any time and beneficial for improving the lubricating efficiency and prolonging the lubricating time.

The invention discloses a wire-drawing nanometer graphite lubricant of a single crystal copper bonding wire. The wire-drawing nanometer graphite lubricant is prepared by adding 100ppm-150ppm of nanometer graphite to a common lubricant through ultrasonic stirring. The nanometer graphite in the lubricant can enter a lubricating gap, so that the lubricant is not extruded out under high pressure; the preparation method has the advantages that the lubricating time is long, the lubricating effect is good, and a wire-drawing mould is difficult to damage; and besides, service life of the mould is remarkably prolonged, the energy consumption and the cost are remarkably reduced, and the economic value and the social value are remarkable.

The invention relates to the field of oilfield chemistry, and discloses a preparation method of a high-temperature-resistant microcapsule lubricant, which comprises the following steps: (1) mixing a prepolymer solution prepared from formaldehyde and urea with carbon microspheres to obtain a wall material mixed solution; (2) using an emulsifier, an ionic liquid, lubricating oil, an anti-wear reagent at extreme pressure and water to prepare a compound emulsion; and (3) in the presence of a curing agent, carrying out a reaction on the wall material mixed solution and the compound emulsion under an acidic condition, and standing, filtering and drying the product to obtain the high-temperature-resistant microcapsule lubricant. The elastic modulus of the microcapsule lubricant at normal temperature is not lower than 1550 MPa, and the microcapsule lubricant has excellent temperature resistance and can resist the temperature of 150 DEG C; 3% w / v of the microcapsule lubricant is added into water-based drilling fluid base slurry, and the friction coefficient reduction rate of the slurry is greater than 80% after the slurry is subjected to hot rolling at 150 DEG C for 16 hours; and after the microcapsule lubricant is subjected to hot rolling in a high-temperature water phase at 150 DEG C for 16 hours, the mass retention rate is greater than 80%.

The invention belongs to the technical field of valves, and is specifically a three-way ball valve, including a valve body; a valve ball is rotatably connected to the valve body, and a valve seat is provided at the sliding connection part between the valve body and the valve ball; a valve stem is fixedly connected to the top of the valve ball , the No. 1 hole opened in the valve stem is slidingly connected with a spool; the valve ball is provided with a No. 2 hole corresponding to the valve seat, and the No. 2 hole is connected with the No. 1 hole; the two ends of the No. 2 hole are sealed and connected with arc-shaped shrapnel; No. 1 hole is provided with a chute near the top, a limit ring is provided at the corresponding position of the spool and the chute, and a spring is set on the spool above the limit ring; a through groove is opened on the top of the valve stem; There is a handle, the middle part of the handle is rotationally connected with the through groove through the revolving pin, and the revolving pin deviates from the center of the valve stem; the handle is provided with a round hole near the center of the valve stem, and a round rod is slidingly connected in the round hole, and the round rod and the sliding column The top is fixed; the invention reduces the friction between the shrapnel and the valve seat by pressing down the handle, and increases the opening efficiency of the ball valve.

For increasing the timing length of lubrication between a shaft sleeve and a transmission shaft, minimizing the frequency of the maintenance, and raising the operation speed and workload, the present invention provides a design method of the shaft sleeve used for a rocker arm of a coal mining machine, the design is characterized by comprising an external wall and an internal wall, a groove used for storing a lubricant is provided on the external wall. The design that the groove used for storing the lubricant (like a solid lubricant) which is provided on the internal wall of the shaft sleeve is capable of increasing the filling amount of the lubricant, prolonging the lubrication timing length, raising the uniformity of the lubrication, reducing the maintenance frequency, and raising the operation speed and workload.

The invention discloses a box loading wheel mechanism of a box pulling device. The mechanism comprises a run-through shaft and a roller, wherein the run-through shaft is fixedly connected with the upper end on the rear side of a turning frame of the box pulling device; a wear-resistant ring is tightly arranged on the inner side in the middle cavity of the roller; the inner wall of the wear-resistant ring is sleeved on external circles of the two ends of the run-through shaft and is in running fit with the external circles; an inward convex baffle ring body is arranged outside the middle cavity of the roller; the inner surface of the baffle ring body is contacted with the outer end face of the run-through shaft; a connecting pin is penetrated in the middle of the two ends of the run-through shaft; the rear end head of the connecting pin is provided with a convex ring; a spacer ring is arranged between the inner surface of the convex ring and the outer surface of the baffle ring body; the front end head of the connecting pin is provided with a bolt member; and the bolt member is also inserted into the two sides of the run-through shaft. Due to adoption of the overall structure, long-span rigid connection is realized on the two sides during box loading, so the structure has high reliability; the wear-resistant ring structure is lined in the roller, so the flexibility of the roller during running is improved and the service life of the entire member is prolonged; the axial relative moment of the roller is limited by using the connecting pin and the bolt member, so the structure of the mechanism is simple; and an oil storage ring is internally arranged to prolong the service life of the mechanism.

The invention discloses a ferroferric oxide / tungsten disulfide nano-composite lubricating agent.The mole ratio of ferroferric oxide to tungsten disulfide is (0.1-0.):(1-2).The invention further discloses a preparation method of the ferroferric oxide / tungsten disulfide nano-composite lubricating agent.The preparation method comprises the following steps that the tungsten disulfide is subjected to ball milling and then added into glycerinum for ultrasonic dispersion, and tungsten disulfide nanosheet glycerinum dispersion liquid is obtained through centrifugation; sodium oxalate, ferric chloride hexahydrate and sodium acetate are sequentially added into the tungsten disulfide nanosheet glycerinum dispersion liquid, a hydrothermal reaction is carried out after ultrasonic dispersion, drying is performed after cleaning, and the ferroferric oxide / tungsten disulfide nano-composite lubricating agent is obtained.The lubricating agent has the excellent lubricating performance, the effective lubricating time can be significantly prolonged, in addition, technology is simple, convenient and safe, the yield is high, the cost is low, and large-scale production is easy.

The invention relates to a composite abrasion-resisting corrosion-resisting self-lubricating film and a preparation method thereof. Laser transformation hardening is conducted on a steel material surface, and low temperature ion nitriding and ion sulphuration processing is conducted on a transformation hardening layer to obtain the composite abrasion-resisting corrosion-resisting self-lubricating film. The laser transformation hardening low temperature ion nitriding and sulphuration composite abrasion-resisting corrosion-resisting self-lubricating film can further improve abrasion-resisting lubricating performance of the steel material surface, and a structural diagram is shown as graph 1. The composite abrasion-resisting corrosion-resisting self-lubricating film is novel in structure, has no obvious boundary between the laser transformation hardening layer and the nitriding / sulphuration layer, and is good in combination with the base body. Due to the fact that the laser transformation hardening processing can reach conditions of self-quenching, grains are refined, more interfaces are formed, diffusion channels of [N] and [S] are increased, and formation of the nitriding / sulphuration layer is promoted. The thickness of the laser transformation hardening layer ranges from 0.3 to 0.7 mm, the thickness of the nitriding layer ranges from 0.1 to 0.4 mm, and the thickness of the sulphuration layer ranges from 0.001 to 0.01 mm. Through friction abrasion tests, friction coefficient, polishing scratch depth and the like of a composite modified layer are small, and good abrasion-resisting, anti-friction and lubrication effects are achieved.

The invention relates to self-lubricating insulating rubber for a vehicle auxiliary frame limiting block and a processing technology of the self-lubricating insulating rubber. The rubber comprises the following raw materials in parts by weight: 60-80 parts of natural rubber, 5-10 parts of eucommia ulmoides rubber, 5-10 parts of thermoplastic vulcanized rubber TPV, 10-20 parts of fast extruding furnace black, 20-30 parts of semi-reinforcing carbon black, 10-20 parts of white carbon black, 5-15 parts of paraffin oil, 5-8 parts of zinc oxide, 1-2 parts of stearic acid, 3-5 parts of paraffin, 2-3 parts of a silane coupling agent, 3-5 parts of an anti-aging agent, 4-8 parts of polytetrafluoroethylene, 2-3 parts of a lubricant, 2-3 parts of sulfur and 1-2 parts of an accelerant. A layer of uniform enveloping film with low friction coefficient is arranged between the rubber and the metal piece, the friction force between the rubber and the metal piece is small, and the abrasion of the rubber and the friction noise between the rubber and the metal piece are reduced.

The invention discloses a detachable expansion and contraction reel, which comprises a base, a controller and a motor. A second bracket is arranged on the top of the base, and a rotating drum is arranged between one side of the second bracket. The base The other side above is provided with a second shell through the first bracket, and one side of the first shell on one side of the second shell is provided with a collar, and the inner wall of the second shell on one side of the first shell is A rotating rod is arranged between the inner walls on one side, and a bearing seat is arranged on the inner side of the second cylindrical shell on the side of the outer wall on both sides of the rotating rod and on the inner side of the first cylindrical shell. In the present invention, second connecting rods are evenly arranged between the outer walls of the inner wall of the first shell and the inner wall of the second shell, and the outer walls of the rotating rods, and a connecting block is arranged at the middle position of the rotating rods. This structure strengthens the expansion and contraction of the reel. Strength, effectively prolonging the service life of the expansion and contraction reel.

The invention relates to mixing and stirring equipment for chemical industry, in particular to a novel high-efficiency energy-saving planetary vacuum stirrer. The stirrer is only provided with a transmission shaft, wherein a planetary gear train component mainly consists of two groups of planetary gear trains, a planetary box and a planetary shield; solar gears I and II of the planetary gear train are fixedly arranged on a bearing seat which is loosely sleeved on the transmission shaft; the planetary box is arranged on the transmission shaft and fixed by a nut; a high-speed dispersing component and a low-speed stirring component are arranged on the planetary box; a planetary gear I engaged with the solar gear I is connected with the high-speed dispersing component; the planetary gear II engaged with the solar gear II is connected with the low-speed stirring component; and the diameter of the solar gear I is greater than that of the solar gear II. The stirrer has the advantages of improving high work reliability, reducing the manufacturing cost and the maintenance cost, showing the high stirring efficiency, reducing the size of the entire machine and reducing the weight, along withhigh mixing efficiency, low gap, low noise and the like.

The invention discloses a drug-loaded synovial fluid additive. Using fluorinated graphene, dopamine and hyaluronic acid / sodium hyaluronate as main raw materials, a one-step method is used to synthesize polydopamine coupling, hyaluronic acid / hyaluronic acid The sodium-modified fluorinated graphene nano-drug carrier is used as a composite additive to improve the lubricating properties of joint synovial fluid after adsorbing drugs for the treatment of arthritis. The preparation method of the technology is simple, the compound additive has good biocompatibility, can significantly reduce the degradation rate of hyaluronic acid, the loaded drugs can effectively treat joint inflammation, and greatly improve the friction reduction and antiwear properties of joint synovial fluid performance, thereby extending the life of the synovial fluid.

The invention provides a bearing bush with surface microporous structures and a processing method. The bearing bush includes a bearing bush body, and the body comprises a metal bearing bush back and an antifriction alloy layer, wherein the antifriction alloy layer is a friction layer between the bearing bush and a journal. The bearing bush is characterized in that microporous structures are formed on the inner surface of the antifriction alloy layer through machining. The microporous structures are micropores formed by adopting the laser micromachining technique for machining, the micro-pores are arranged regularly, the diameters range from 150 micrometers to 200 micrometers, and the depths range from 35 micrometers to 50 micrometers. The bearing bush is provided with the microporous structures on the inner surface, can effectively improve the oil film bearing capability, and remarkably improves the lubrication effect.

The invention provides a flange, a pump body assembly, a rotary compressor and an air conditioner. The flange comprises a flange body, a bearing hole used for inserting a crankshaft is formed in the flange body, a vibration reduction ring groove is formed in the hole opening wall of the side, close to an eccentric part of the crankshaft, of the bearing hole, and a spiral oil guide groove is formed in the hole wall of the bearing hole; and the spiral oil guide groove comprises a first groove section located on a first hole section and a second groove section located on a second hole section, and the maximum groove width of the second groove section and the maximum groove depth of the first groove section are smaller than the minimum groove depth of the second groove section. According to the flange, the spiral oil guide groove on the first hole section, namely the first groove section, is designed into the shallow groove structure, so that the outer ring groove wall of the vibration reduction ring groove can be closer to the bearing hole, the sealing distance of the end part of the flange body and the matching position of a roller is increased, and the volume efficiency of a pump body structure is improved; and meanwhile, the phenomenon of opening collapse caused by too small wall thickness of the wall body between the vibration reduction ring groove and the bearing hole can be prevented.