236results about How to "Improve lubrication status" patented technology

The invention provides engine oil of a long-service life gasoline engine, which comprises basic oil and additives, wherein the additives comprise the following ingredients in percentage by weight: 4.0 percent to 6.0 percent of dispersing agents, 2.5 percent to 4.5 percent of detergent additives, 0.2 percent to 0.8 percent of corrosion inhibitors, 0.1 percent to 0.2 percent of antioxidizers, 0.01 percent to 0.15 percent of nanometer copper wear resistance agents, 5.0 percent to 9.0 percent of viscosity index improving agents, 0.3 percent to 0.5 percent of pour point reducers and the balance ofbasic oil, wherein the basic oil is semisynthesis composite basic oil consisting of API type III basic oil accounting for 40 percent to 65 percent of the mass percentage of the basic oil and 35 percent to 60 percent of poly-alpha olefin synthesis oil. The engine oil can meet the requirements of high-temperature high-speed automobile and motorcycle engines, and can ensure that the engines are always in a good lubricating state, in addition, the service life is long, and the cost is low.

The invention relates to a preparation process and a device of a nano-particle reinforced bimetal composite, the nano-particle reinforced bimetal composite comprises the following chemical components by weight percent: 6-25% of Cr, 4-18% of Ni, 1.0-4% of Mo, 1.0-1.8% of Si, 1.2-3% of Mn, 0.4-2.2% of B, 0.1-1.2% of MgO, 0.2-2% of CaF2, 0.2-0.7% of C, 0.2-0.8% of Nb, not more than 0.9% of one or the combination of CeO2, Y3O2 and La2O3, 0.0-0.8% of Co, and the balance of Fe, and mixed particles of nano-sized carbides, nitrides, borides or carbonitrides are added in alloy powder. The vacuum induction melting and the cladding processes and equipment are adopted for melting and cladding the mixture on a workpiece, the thickness of a cladding layer is 0.1-25mm, the cladding layer contains 1%-50% of nano-reinforcing particles of one or the combination of the carbides, the nitrides, the borides and silicides, and the cladding layer has special performances of wear resistance, corrosion resistance, electrical conductivity, self-lubrication performance and the like. A coating layer and a base material form the metallurgical bonding, thereby having high bonding strength, overcoming the drawbacks in various coating processes at home and abroad, leading the coating layer to avoid the defects of shrinkage cavities, inclusion, cracking, shedding and the like and having the advantages of high heating temperature, fast speed, high production efficiency, small energy consumption, simple preparation process and low cost.

The invention discloses a textured roller bit sliding bearing and a test method of the unit tribological property of the texture roller bit sliding bearing. According to the textured roller bit sliding bearing disclosed by the invention, a lubricating medium is arranged between a shaft neck and a bearing, wherein the shaft neck is made of a 20 CrNiMo material; the bearing is made of a beryllium bronze material; a surface texture is arranged on the inner surface of the bearing; the surface texture comprises a plurality of cylindrical pits or elliptically cylindrical pits in uniform distribution or cross distribution along the peripheral direction of the bearing. Aiming at the working condition and special structure of the roller bit sliding bearing disclosed by the invention, the adhesive failure problem of the traditional drill bearing is solved by providing the sliding bearing combined with cylindrical or elliptically cylindrical texture parameters through microscopic structure optimization, thus the service life of a roller bit is prolonged.

A grease for high-speed bearing and rolling bearing for high speed that enable satisfactorily coping with a high-speed rotation of 170x10<4> or higher dmN value and enable realizing compaction of machine tool and cutback of operating costs. The grease is one comprising a mixture of urea grease containing a urea compound as a thickener and nonurea grease not containing the urea compound, wherein the urea compound is one obtained by reaction between a polyisocyanate component and a monoamine component, the monoamine component containing 50 mol% or more of at least one monoamine selected from among aliphatic monoamines and alicyclic monoamines based on all the monoamines. Rolling bearing for high speed (1) is one comprising inner ring (2), outer ring (3), multiple rolling elements (4) interposed between the inner ring (2) and the outer ring (3) and seal member (6), wherein the above grease (8) is hermetically introduced around the rolling elements(4).

The invention discloses a fault predication and service life evaluation system of a wind power main bearing. The fault predication and service life evaluation system comprises a data acquisition unit,a data storage unit, a fault predication unit and a service life evaluation unit, wherein the data acquisition unit comprises a plurality of sensors for detecting a vibration component and a temprature signal of the wind power main bearing and a pressure signal in a cavity of the main bearing, and a data acquisition module connected with the plurality of sensors; the data storage unit is used forreceiving data and storing; the fault predication unit is used for carrying out principle component analysis on the data transmitted by the data storage unit, so as to realize fault predication of the wind power main bearing; the service life evaluation unit is used for predicating a residual service life of the main bearing through carrying out the principle component analysis on the data transmitted by the data storage unit. The invention further discloses a fault predication and service life evaluation method of the wind power main bearing. According to the fault predication and service life evaluation system, after the data is acquired, the data is subjected to PCA (Principal Component Analysis) processing; bearing faults are predicated based on a neural network model; the service life of the bearing is predicted based on a similarity principle, and real-time lubricating adjustment of the bearing is also realized based on a predication result.

An external reverse gear unit for the speed variator of motorcycle is composed of a case assemblage for changing the rotational direction of driven axle, a manipulating mechanism installed on case body for driving the driven axle to change its rotational direction, and a reverse gear controlling drive for controlling the said manipulating mechanism. It features that the reverse gear can only be performed at low gear position, that is, reverse gear position "I", resulting in higher safety.

The invention provides a mechanical seal provided with multiple end faces arranged between a moving ring and a stationary ring for realizing zero leakage and non-contact through the combined actions of micro concave cavities, gap channels and pumping slots. Micro concave cavities or pumping slots are respectively formed in different end faces of the mechanical seal friction pair; the dynamic pressure effect of the micro concave cavities and the pumping slots is utilized to realize the non-contact; the pressure of leaked medium is reduced by utilizing the gap channels (or provided with mazes) among different end faces; the leakage amount is reduced or the zero leakage is achieved by utilizing the pumping effect of the pumping slot. The mechanical seal has the advantages that the zero leakage and non-contact are realized through the combination of surface micro molding structures of different end faces and the gap channels, the lubricating performance during the operating process is improved, besides, good sealing performance in the case of start-up and parking can be realized through the different seal gaps of different end faces, a certain effect is achieved on the aspects of mechanical seal thermal deformation reduction and particle abrasion prevention, and the mechanical seal is applicable to the field of high parameter mechanical seal of all liquid mediums.

There is provided a grease composition decreasing the load sensitivity to a running torque, maintaining necessary performances for a wheel supporting rolling bearing unit, and maintaining a good lubricated condition for a long time, and, a wheel supporting rolling bearing unit having the grease composition packed therein. The grease composition contains base oil, thickeners, rust inhibitors, and anti-wear agents, the base oil contains mineral oil, synthetic oil or blend oil of the mineral oil and the synthetic oil, a mix ratio (mass ratio) of the mineral oil and the synthetic oil is 0:100 to 20:80, a kinematic viscosity of the base oil at a temperature of 40° C. is 70 to 150 mm²/s, and a pour point of the base oil is equal to or lower than −40° C. The wheel supporting rolling bearing unit is packed with this grease composition.

The invention discloses an offset worm and wormwheel transmission designing and manufacturing method. The offset worm and wormwheel transmission designing and manufacturing method comprises the following steps: a. determining a gear face equation of the worm according to an actual machining parameter and a worm design principle; b. obtaining a gear face equation of the wormwheel according to the gear face equation of the worm and a gear face meshing principle and according to the installing position of the worm and wormwheel; and c. carrying out tooth direction and tooth profile shaping to the wormwheel so as to drive the worm and the wormwheel to form point contact that the contact area is elliptically shaped, and the long axis direction of the contact area is perpendicular to the relative movement direction of the gear face of the worm and the wormwheel so as to form a beneficial contact condition of extreme pressure lubrication. According to the method, after the worm and the wormweel which are meshed mutually are designed, the worm is shaped, so that the gear face is meshed to be point contact; the meshing moulage is adjusted conveniently; the installation error is absorbed; and at the same time the contact area of the worm and the wormwheel is elliptically shaped and the long axis of the contact area is perpendicular to the direction that the gear faces of the worm and the wormwheel move relatively, so that the worm and the wormwheel which are meshed mutually are under lubrication in a good state.

A relief groove (23) is provided at a corner in which a track surface (21) and a flange surface (24) cross, in an inner ring (20) of a cylindrical roller bearing. A chamfer (42) is provided at a corner part in which a rolling surface (41) and an end surface (43) cross, in a cylindrical roller (40). When it is assumed that the height of the chamfer (42) from the rolling surface (41) is “h” and the curvature radius of the chamfer is “R”, the relation such that 1.0≦R/h≦1.5 is satisfied.

A slider is constituted by a main body made of a metal and a frame member and an end cap made of a synthetic resin. The main body is provided with a rolling groove. The frame member is provided with a return passage and an inner side groove of a direction changing passage. The end cap is provided with an outer side groove of the direction changing passage. A longest outer dimension in a slider width direction between lower end portions of inner legs of the main body is made to be larger than a shortest dimension in the slider width direction between projected portions of the frame member. The frame member is detachably engaged with the main body by putting a side of a leg portion of the main body to and from a side of a frame member horizontal portion by elastically deforming the frame member.

Convex profile surface includes position section, transition section and division section. Characters are that the transition section and division section are concave surface, and radius of curvature of drum type roller is less than radius of curvature of the concave surface to be matched. The manufacturing method is method of four coordinates interlock of processing in single side face including interlock between z1 rotation axis of cam and z2 rotation axis of cutting tool as well as straight-ahead travel of cutting tool along y2 and z2 coordinates. Features are: small abrasion, low noise, long service life and raised manufacturing accuracy and efficiency.

Oil is supplied to bearing 1 and returned to oil storage chamber 6a via chamber 2a and pipe 2b. First oil return chamber 8 and second oil return chamber 7 communicate via a hole, and second oil return chamber 7 communicates with oil supply chamber 6 via oil return hole 9. The opening of the extension pipe 10 of oil return hole 9 has a small gap, to result in negative pressure in extension pipe 10. The negative pressure sucks the oil leaking from between bearing cover 3 and rotor shaft 20. The oil leaking is suppressed, keeping the supply of the lubricating oil to the bearing excellent.

The invention relates to a concentrated oil feeder for a manipulator linear platform, which comprises a base, a dust-proof plate, a fixed seat, a supporting seat, a linear guide rail and a ball screw, wherein the fixed seat and the supporting seat are respectively arranged on both ends of the base; the supporting seat arranged at the front end of the base supports the front end spindle nose of the ball screw of a transmission mechanism; a nut head screwed with the ball screw is connected with a slide block fixed on a connecting plate; and the slide block and the linear guide rail form a sliding joint. The concentrated oil feeder is characterized in that the lower part of the connecting plate is fixedly provided with an oil catcher, the oil inlet end of the oil catcher is communicated with an oil inlet pipe through an oil passage on the connecting plate, the oil catcher is provided with a plurality of oil outlet ends, and the oil outlet ends are communicated with the slide block and the nut head through oil pipes and flow nipples. When injecting oil to the platform or one machine in the platform combination, the operator can inject oil only after opening the dust cap without affecting the original usage precision of the sliding way, therefore, the invention has the advantages of concentrated oil feeding and simple operation, and can properly increase the number of oil feeding so that the platform is in a favorable lubrication state all along.

The invention relates to the technical field of air compressors, and discloses an oil-free piston type air compressor for a new energy vehicle. The oil-free piston type air compressor for the new energy vehicle comprises a crank case, a cylinder body and a cylinder head assembly, wherein a piston cylinder is arranged in the cylinder body; the cylinder body is arranged above the crank case and is connected with the crank case; the cylinder head assembly is arranged above the cylinder body and is connected with the cylinder body; a low-pressure heat exchanger connected with the crank case is arranged on the front side of the cylinder body; a manifold block connected with the cylinder body is arranged at the right end of the cylinder body and is connected with the low-pressure heat exchangerthrough a first water inlet pipe; a first water outlet is formed in the left end of the low-pressure heat exchanger and is connected with the cylinder head assembly through a first drainage pipe; a high-pressure heat exchanger connected with the crank case is arranged on the back side of the cylinder body; the manifold block and the high-pressure heat exchanger are connected through a second waterinlet pipe; and a second water outlet is formed in the left end of the high-pressure heat exchanger and is connected with the cylinder head assembly through a second drainage pipe. The oil-free piston type air compressor for the new energy vehicle provided by the invention adopts water-cooling and air-cooling double-acting cooling manners so as to be sufficient in cooling and better in effect.

The invention discloses a road roller combining vibration, oscillation and complex excitation as a whole, which comprises a frame; an engine, a vibrating wheel, and a transmission part connected with the engine are disposed in the frame; a cab is disposed above the frame; the vibrating wheel comprises a vibrating wheel cylinder body; a center shaft is disposed at the center of the vibrating wheel cylinder body; four eccentric shafts are disposed around the center shaft with equal angles; the eccentric shafts are mounted on a supporting plate disposed on the vibrating wheel cylinder body; the end parts of the eccentric shafts are movably connected with driven pulleys; the driven pulleys are connected by a driving belt with driving pulleys which are disposed at the end part of the center shaft and at the same side as the driven pulleys; the driven pulleys are connected with a phase adjusting mechanism by gears at the end surfaces. The invention combines vibration, oscillation and complex excitation functions as a whole, enhances the application effect, expands the application scope, has a simple structure, is convenient for using, and is convenient for popularization and application.