78results about How to "Avoid early failure" patented technology

A semiconductor power device is supported on a semiconductor substrate with a bottom layer functioning as a bottom electrode and an epitaxial layer overlying the bottom layer as the bottom layer. The semiconductor power device includes a plurality of FET cells and each cell further includes a body region extending from a top surface into the epitaxial layer. The body region encompasses a heavy body dopant region. An insulated gate is disposed on the top surface of the epitaxial layer, overlapping a first portion of the body region. A barrier control layer is disposed on the top surface of the epitaxial layer next to the body region away from the insulated gate. A conductive layer overlies the top surface of the epitaxial layer covering a second portion of the body region and the heavy body dopant region extending over the barrier control layer forming a Schottky junction diode.

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.

The invention a fault detection and response method by applying a robot in numerical control lathe machining. A programmable logic controller is used for simultaneously controlling the robot, a loading and unloading device and a plurality of numerical control machine tools to carry out self-inspection according to the steps before the production is started, the programmable logic controller displays the corresponding fault codes on a human-computer interface according to the fault information returned by self-inspection, and meanwhile, the fault lamps are turned on, fault voice prompt is played, faults are accurately positioned, and manual searching is not needed, so that great convenience is brought to maintenance personnel; meanwhile, detection is carried out before the production is started, early-stage faults are effectively avoided in the production process, and the probability of shutdown maintenance is greatly reduced.

The invention discloses a magnetron laser bionic compound reinforcing method and relates to surface modification of metal materials. The method includes the main steps of 1, polishing the surface of metal material with abrasive paper, and cleaning the surface with alcohol; 2, subjecting the surface of the metal material to magnetron laser bionic fusing so as to obtain a bionic reinforcement fusing track; 3, setting an absorbing layer and a restraint layer on the fusing track; 4, subjecting the fusing track to laser shot-peening so as to obtain the compound reinforced bionic structured surface. The magnetron laser bionic compound reinforcing method combining magneto-stirring effect has the advantages in laser thermal effect; the bionic reinforced structure is made on the surface of the metal material; microstructure and residual stress of a bionic reinforced area are comprehensively controlled, the compound reinforcing effect of fine crystal strengthening and stress strengthening is produced, and the properties of the metal material such as surface wear resistance and fatigue resistance are significantly improved. The magnetron laser bionic compound reinforcing method with simple process is easy to operate and suitable for large-scale batch production.

The invention discloses an energy-saving casing of an induction heating device universally used in an iron section cladding sand cast production line. The casing adopts metal materials and is installed on an iron section delivery section. The induction heating device and the iron section delivery section of the casing are wrapped on the periphery of the casing, and an iron section delivery inlet and an iron section delivery outlet are arranged at two ends of the casing. The casing comprises an upper casing and a lower casing which are connected through a fixing piece, a rib and an opening position are respectively arranged on the upper casing and the lower casing, and the opening position is located at the top of the casing. A casing part of the iron section heating device is improved. The energy-saving casing resolves the technical problems of early failure and high energy consumption of relative parts caused by the fact that the induction heating device in the iron section cladding sand cast production line is heated in non-control mode, reduces energy consumption of the iron section heating device, prevents early failure of other parts (like heat-resistant bearings) in the device, and has the advantages of saving energy, reducing consumption, being high in generality and durable in use.

The invention provides a supporting bearing for a drawing shaft of a spinning machine, which comprises a bearing seat, an outer ring, an inner ring, needle rollers, steel balls, a steel ball retainer, a needle roller retainer and shield rings. The surface of the outer ring is provided with a circular-arc raceway and a straight raceway. The surface of the inner ring is provided with a circular-arc raceway and a straight raceway corresponding to those of the outer ring. A group of steel balls are arranged at the centers of the circular-arc raceways of the inner and outer rings and the steel balls separated at along the circumstantial direction by the steel ball retainer. A group of needle rollers are arranged at the centers of the straight raceways of the inner and outer rings and the needle rollers are separated by the needle roller retainer. Two shield rings which limit the needle rollers and the needle roller retainer to deflect axially are arranged at both sides of the straight raceways. The invention is designed of a set of combination bearing instead of two sets of bearings in the prior art, which avoids early invalidation during operation resulted from differences in different bearings. The invention meets the use requirements of high load for the bearing and simultaneously improves the lubrication of the bearing.

The invention relates to an energy-saving window frame or window sash profile of a polyurethane composite material consisting of polyurethane resin and glass fibers and a forming method. The profile comprises the glass fibers; a plurality of bundles of glass fibers are densely distributed to form a window frame or window sash profile forming skeleton; and the polyurethane is compounded on the inner and outer surfaces of the window frame or window sash profile forming skeleton to form the polyurethane window frame or window sash profile. The profile has the advantages that: the profile has light weight, high strength, energy conservation, heat insulation, health, environmental friendliness, remarkable energy-saving effect, corrosion and ageing resistance, long service life, good dimensional stability, good weather resistance, good high temperature resistance, better low temperature resistance, good insulating performance, good shock absorption performance and rich colors; the polyurethane composite material has high hardness and can be used for coating various paints to prepare the profiles of various colors to adapt the application of different styles and grades; and the profile has fatigue resistance, and the polyurethane composite material has high fatigue resistance so as to ensure use safety and reliability of the material.

The invention discloses a composite diamond drill bit with a fixed buffer structure, and belongs to the field of drilling. The drill bit mainly comprises a drill bit body, multiple cutter wings and atleast two tooth palms extending from the drill bit body or fixed on the drill bit body, and at least two tooth wheels consisting of tooth wheel bodies and teeth, water holes or nozzles; the tooth wheels are rotationally connected with the tooth palms; and scraping teeth are arranged on the cutter wings. For any two adjacent tooth wheels, in the rotating direction of the drill bit, front tooth wheels are on the front side, and back tooth wheels are on the back side; at least one cutter wing is arranged in areas before the back tooth wheels and behind the front tooth wheels; a buffer base extending from the drill bit body or fixed on the drill bit body is arranged between the at last one cutter wing and the front tooth wheels; and a fixed buffer element is arranged on the buffer base. The drill bit can obviously reduce the impact vibration in the guide drilling process, reduces the impact failure of the scraping teeth, and improves the continuous drilling capacity.

The invention discloses a combined type diamond bit with a rotary buffer structure, and belongs to the field of drilling. The bit mainly comprises a bit body, multiple blades and at least two tooth palms extending from the bit body or fixed to the bit body, at least two tooth wheels composed of tooth wheel bodies and teeth, water holes or nozzles; the tooth wheels are rotatably connected with thetooth palms, scraping teeth are arranged on the blades, for any two adjacent tooth wheels, in the rotating direction of the bit, the tooth wheel with the circumferential position close to the front isthe front tooth wheel, the tooth wheel with the circumferential position close to the back is the rear tooth wheel, at least one blade is arranged on the area in front of the rear tooth wheel and behind the front tooth wheel, a buffer base extending from the bit body or fixed to the bit body is arranged between at least one blade and the front tooth wheel, and a rotary buffer element is arrangedon the buffer base. According to the bit, the impact vibration of the bit in the guide drilling process can be obviously reduced, impact failures of the scraping teeth can be reduced, and the continuous drilling capacity of the bit can be improved.

A tie foundation (1) for a railway tie (2) having at least a first elastic, preferably elastomer layer (3) and at least a second elastic, preferably elastomer layer (4), with a reinforcement layer (5) being embedded between the first elastic layer (3) and the second elastic layer (4), with the second elastic layer (4) forming an outer surface (6) of the tie foundation (1) and the reinforcement layer (5) comprising a fibrous material.

The invention provides a RS2000 anti-rutting modified asphalt processing technic which belongs to the road and bridge engineering technique field, relates to a road asphalt processing technique. The technique uses a technical scheme as follows: the RS2000 anti-rutting modified asphalt is prepared by adding RS2000 modifying agent to basic asphalt which has characteristics that: adding 8% modifying agent into the basic asphalt evenly, heating to 160-170 DEG. C, and stirring 30 minutes with a stirring speed 350 revolutions per minute. The technique also can use a technical scheme as follows: adding RS2000 modifying agent into the basic asphalt which has characteristics of: adding 8% RS2000 modifying agent into the basic asphalt with 150-160 DEG. C, stirring 10 minutes, then rubbing the mixed material twice by a colloid mill. Compared with the prior modified asphalt, the modified asphalt provided by the invention has excellent performance and low cost.

The invention relates to a reinforcing rib section for a polyurethane composite material energy-saving door frame or door sash frame or window frame or window sash frame, which is made from polyurethane resin and glass fiber, and a molding method. The reinforcing rib section comprises glass fibers, wherein a reinforcing rib section molding framework for a door frame/sash or a window frame/sash consists of a plurality of bundles of densely covered glass fibers; and polyurethane resin is compounded with the inner and outer surfaces of the reinforcing rib section molding framework for the door frame/sash or the window frame/sash. The reinforcing rib section has the advantages of light weight, high intensity, energy conservation, heat preservation, heat insulation, health, environmental friendliness, remarkable energy-saving effect, corrosion resistance, ageing resistance, long service life, high size stability, high weather resistance, high high-temperature resistance, higher low-temperature resistance, good insulating property, high damping performance and rich color; a polyurethane composite material has high hardness; and the reinforcing rib section can be painted with various paints to obtain sections of various colors so as to adapt to different styles and grades.

A coaxial cable copper pipe connecting device is formed through blanking and punching of an entire beryllium bronze band. Through punching, an installation fixing hole is formed in the bottom surface and a plurality of spring sheets are formed on the bottom surface. A ball surface is arranged on the top end of each spring sheet. The maximum distance between the ball surface and the top end of each spring sheet is less than 0.5 mm. The bottom surface of the installation fixing hole and each spring sheet form a certain angle. The connecting device is then subjected to heat treatment of a vacuum furnace, the temperature of the inside of which is between 305 and 310 DEG C, kept for 2 h, and subjected to vacuum-cooling until the temperature of the device is below 40 DEG C, so that it is ensured that the ratio of the outer diameter of each spring sheet before contraction to that after contraction is 2:1, and the spring sheet can rebound without breaking. The connecting device has an excellent contraction ratio, and can be adapted to coaxial cable copper pipes with different inner diameters. The ball surfaces on the top ends of the spring sheets increase the effective contact area of the device and a coaxial cable copper pipe, reduces the contact resistance and the friction resistance at the same time, and prevents the spring sheet from fracturing.

The invention discloses an independent steering and suspension system for a three-wheeled automobile, which comprises a vehicle frame, a rocker arm is hinged at the front end of the vehicle frame, and a shock absorber is arranged between the rear part of the rocker arm and the vehicle frame. system, the front end of the rocker arm is rotated and provided with a front suspension assembly for installing the front wheel of a three-wheeled vehicle; A rod system connects the front suspension components. The invention makes the steering and suspension system completely independent, and the two no longer affect each other, avoiding the early failure of the steering column shaft and steering bearing in the existing steering system, avoiding the influence on the steering wheel, reducing the vibration of the steering wheel, and improving driving comfort , and the structure is compact, saves installation space, avoids early failures such as oil leakage and fracture of the shock absorbing element, and can meet the different needs of light load and heavy load, and has good ride comfort.

The invention discloses a ball connecting rod, a connecting rod assembly and a processing method of the ball connecting rod. The ball connecting rod is used for matching a ball socket. The ball connecting rod contains a ball which matches the ball socket, a connecting rod which is connected with the ball and has screw thread and a coating which is arranged on the outer surface of the connecting rod and is at least covered with screw thread. The processing method of the ball connecting rod comprises the following steps: S1, blanking is carried out to generate a blank with a ball and a connecting rod; S2, the connecting rod of the blank undergoes thread rolling to form a first part with screw thread; S3, the surface of the first part is electroplated to form a second part with a coating; S4, the second part is cut and processed, and the coating formed at the ball of the second part is at least removed to form a third part; and S5, the third part undergoes barreling and cleaning. According to the ball connecting rod manufactured by the above processing method, the ball has high machining precision and low roughness, the ball matches the ball socket greatly, and early failure of the connecting rod assembly is avoided.

The invention discloses an automobile differential mechanism and bearing combination structure. The combination structure is characterized in that a thrust bearing is clamped between a differential case and the top ends of planetary gears, and the thrust bearing and the planetary gears are arranged on a same shaft together in a sleeving mode. Contact surfaces of the thrust bearing and the differential case are spherical surfaces corresponding to each other, and the contact surface on the thrust bearing is a static surface. The combination structure has the beneficial effects that roller pin bearings rotate along with rolling of the planetary gears, grinding scrap iron is reduced, the internal lubrication environment is improved, the faults of the automobile differential mechanism are reduced, and the overall service life of the differential mechanism is prolonged.

The invention discloses a method for discriminating the application range of a flexible surface under the overload condition. According to the method, the flexible surface is introduced, and the traditional method that only a semi-rigid surface is adopted, and the thickness of a base layer is increased to avoid overloads is changed. Under the same traffic flow, overload rate and overload limit, the fatigue service life period of the semi-rigid surface is compared with that of the flexible surface, and therefore when the flexible surface or the semi-rigid surface is adopted is discriminated. According to the method, the traditional method that only the semi-rigid surface is adopted, and the thickness of the base layer is increased to avoid the overloads is changed, and the flexible surface is introduced. Under the same traffic flow, overload rate and overload limit, the fatigue service life period of the semi-rigid surface is compared with that of the flexible surface, and therefore the application range of the flexible surface and the semi-rigid surface is provided. Under the same condition, for the urban road with the large overload rate and overload limit, a flexible surface structure should be adopted by a surface structure, and therefore early damage caused by the overloads is avoided; meanwhile, the cost of later maintenance is reduced, and the fatigue service life period is prolonged.