75 results about "Short life" patented technology

The invention relates to a continuous carbon fiber reinforced silicon carbide sagger and a preparation method thereof, and aims to solve the problems of poor performance and short service life of an existing graphite sagger or low-density carbon-carbon sagger for high-temperature calcination of a lithium battery negative electrode material. The saggar takes continuous carbon fiber cloth as a reinforcement body. The preparation method comprises the following steps: preparing slurry, cutting the continuous carbon fiber cloth, laying and brushing or spraying, drying and closing a mold, curing, replacing the mold, sintering, densifying again and the like. According to the method, by controlling the content of the continuous carbon fiber cloth and the silicon carbide matrix, the oxidation resistance and the mechanical property are greatly improved while low density is considered. The strength and the service life of the prepared sagger material are far higher than those of existing sagger materials such as graphite and low-density carbon, and meanwhile the sagger material is low in raw material cost, simple in technological process, good in performance, low in cost and wide in application prospect.

The invention discloses a long-service-life composite heat treatment method for a harmonic reducer flexible gear made of an SNCM439 material, belongs to the technical field of long-service-life manufacturing of harmonic reducers, and solves the problem that the service life of the harmonic reducer flexible gear is short. According to the method, a flexible gear made of an SNCM439 material is subjected to a composite heat treatment method of secondary normalizing, quenching, deep cooling and tempering, and the specific process method is as follows: the primary normalizing temperature is 870-890 DEG C, the heat preservation time is 50-70 minutes, and air cooling is performed; the secondary normalizing temperature is 850-870 DEG C, the heat preservation time is 50-70 min, and air cooling is carried out; the quenching temperature is 830-850 DEG C, the heat preservation time is 50-70 min, and oil cooling is conducted; the subzero treatment temperature is-70 DEG C to-90 DEG C, and the heat preservation time is 110-120 min; the tempering temperature is 490-510 DEG C, and the heat preservation time is 120-140 minutes.

The present application discloses a folding mechanism for a multi-rotor UAV arm and a multi-rotor UAV, which relates to the field of UAVs and aims to solve the problems of the existing arm spring shaft, which has a short service life and is not drop-resistant, is difficult to assemble and maintain, and the quick-release pipe clamp folding parts mostly use threaded connections, have slow disassembly and assembly efficiency, and are limited to tubular arms; the mechanism comprises: a fixing member, which is used to be arranged on a body; a cam spindle, which is threadedly arranged on the fixing member; a main spring, one end of which is tightly sleeved on the end of the cam spindle close to the fixing member and the other end is tightly pressed against a specific groove of the fixing member; a connecting member, which is rotatably sleeved on the end of the cam spindle away from the fixing member, and the connecting member is used to install the arm; a cam handle, one end of which is hingedly arranged on one end of the cam spindle passing through the connecting member and is tightly pressed against the connecting member, and the cam handle has a locking position and a releasing position.

The utility model provides an automobile hub bearing, and belongs to the technical field of automobile hub bearings. The problem that an existing automobile hub bearing is short in service life is solved. The automobile hub bearing comprises an outer ring, an inner cylinder is movably installed on the right side of an inner cavity of the outer ring, a right flange is welded to the right side of the surface of the inner cylinder in a sleeved mode, a cavity is formed in the right flange, and an installation bolt is arranged in an inner cavity of the cavity in a die-casting mode. The utility model has the advantages of long service life and the like.

The invention is that the muons released in the atmosphere decrease in length until they reach the ground due to their short life span and that this decrease is used to measure altitude, thus measuring the altitude more easily and more safely.

The invention relates to the field of computers, in particular to a register management method and device. In the prior art, an assembly line register is reused for temporarily storing data, then a data transmission mechanism of a processor is used for transmitting the temporarily stored data to subsequent instructions on an assembly line for use, and due to the fact that the number of the instructions entering the assembly line is limited, the method is only suitable for the instructions with the short life cycle, and the application scene is limited. The first indication information indicates the first life cycle of the register associated with the first instruction set, the first life cycle is shorter than the second life cycle determined by hardware, the processor can be prompted to release the register in advance, and therefore the use efficiency of register resources is improved. The first indication information indicates the life cycle of the non-pipeline register, so that the technology provided by the invention not only can optimize the register resource used by the instruction with the shorter life cycle, but also can optimize the register resource used by the instruction with the longer life cycle.

The present application provides a method, device, processor and system for extending the life of a fuel cell. The method includes: respectively obtaining the decay rate of activation polarization, the decay rate of ohmic polarization and the decay rate of concentration polarization of the fuel cell; when the decay rate of activation polarization is greater than or equal to a first threshold, controlling the fuel cell to operate in a first operating condition and continuing for a first time period; when the decay rate of ohmic polarization is greater than or equal to a second threshold, controlling the fuel cell to operate in a second operating condition and continuing for a second time period; when the decay rate of concentration polarization is greater than or equal to a third threshold, controlling the fuel cell to operate in a third operating condition and continuing for a third time period. The method solves the problem of short fuel cell life in the prior art due to rapid irreversible decay caused by accumulation of fuel cell polarization decay and memory.

The utility model relates to a spiral tightening cylindrical lock, which aims at solving the technical problems of complicated lock cylinder structure, high production cost, inconvenience in production and assembly, easiness in abrasion and short service life caused by the structural design of an inner shaft sleeve and an outer shaft sleeve at a lock cylinder of the conventional like product. One end of a rotating shaft in a base of the cylindrical lock extends out of a bottom hole in one end of the base, a steel bolt is arranged on a square rod threaded part at the end of the rotating shaft, a square hole of the steel bolt is connected with the square rod threaded part of the rotating shaft, and small gaskets and small nuts are arranged on the square rod threaded part of the rotating shaft on the two sides of the steel bolt respectively; the key point is that the other end of the rotating shaft in the base is sleeved in a rod groove at one end of the lock cylinder and is provided with a pin, two ends of the pin extending out of the rotating shaft are inserted into spiral holes symmetrically arranged at two sides of the end of the lock cylinder, a raised unlocking head at the other end of the lock cylinder is arranged in a top hole at the other end of the base, and a spring is arranged between the top in the rod groove of the lock cylinder and the end part of the rotating shaft. And a steel wire baffle ring and an O-shaped sealing ring are respectively arranged in the steel wire baffle ring groove and the sealing ring groove of the lock cylinder.

The present invention relates to the field of vehicle air conditioning technology, and specifically provides a vehicle air conditioning unit and a control method thereof, aiming to solve the problems of high energy consumption and short life of vehicle batteries in existing vehicle air conditioners. To this end, the vehicle air conditioning unit of the present invention includes an in-vehicle unit, an out-vehicle unit, and a refrigerant circulation loop arranged between the in-vehicle unit and the out-vehicle unit. The out-vehicle unit includes a housing and an out-vehicle fan. A heat exchange channel is formed in the housing. The housing is also provided with an air outlet, a first air inlet, and a second air inlet. The air outlet is connected to one end of the heat exchange channel. The second air inlet is located on the air flow path during vehicle driving. One of the first air inlet and the second air inlet can be selectively connected to the other end of the heat exchange channel. Based on this, the present invention can determine the timing of switching from the state in which the first air inlet is connected to the heat exchange channel to the state in which the second air inlet is connected to the heat exchange channel according to the temperature inside the vehicle, effectively reducing energy consumption by using air passing through the housing, and ensuring the life of the vehicle battery.

The utility model relates to the technical field of straw secondary processing, in particular to a front cutting and extruding device for crushing wet straw, which comprises a shell, a cutting and extruding device, a cutting and extruding device, a cutting and extruding device and a cutting and extruding device, the two-way reamer mechanism is arranged in the shell and is in transmission connection with a driving device fixed on the rack, and the two-way reamer mechanism comprises a first reamer assembly and a second reamer assembly which are opposite in rotating direction; the first reamer assembly comprises a rotatable left-hand hob, the second reamer assembly comprises a rotatable right-hand hob, and the left-hand hob and the right-hand hob are driven by the driving device to move oppositely to form hobbing of straw. The front cutting and extruding device for crushing the wet straw solves the problems that in the processing and cutting process of the wet straw, vibration of equipment is large, impact borne by a cutter is large, the cutter is prone to abrasion, and the service life is short.

The invention discloses a long-life wind power tower surface coating, the surface coating is composed of epoxy zinc-rich primer, epoxy micaceous iron intermediate paint and polysiloxane topcoat; the epoxy zinc-rich primer is obtained by two-component compounding, the first component of which is composed of epoxy resin, zinc powder, a first additive, a first auxiliary agent and a first solvent, and the second component is composed of a polyamide curing agent and a solvent, and the mass ratio of the first component to the second component is 90-95:5-10. The long-life wind power tower surface coating of the invention solves the problem that the wind power tower surface coating has a short protective life and cannot meet the durable performance requirements of the wind power tower under long-term harsh conditions.

According to the air flotation centrifugal air compressor with the low start-stop rotating speed and the long service life, the air path assembly is arranged in the compressor, the working environment air pressure of the radial bearing and the rotating shaft in the compressor is improved, the air film bearing capacity of the radial bearing is improved, the start-stop rotating speed of the radial bearing is reduced, and the service life of the air compressor is prolonged; the problem that in the starting and stopping process of an existing centrifugal air compressor, a gas bearing and a shaft sleeve are in contact friction, and consequently the service life of the air floating centrifugal air compressor is short is solved.

The present invention provides an expansion joint connection structural member for fixing a building, a fixed building and a construction method for expanding joint transformation, which relates to the technical field of building construction. The technical problems of poor structural connection reliability and short service life existing in the prior art are solved. The expansion joint connection structural member for fixing a building includes a left intermediate beam, a right intermediate beam, a left side beam, a right side beam, a front sliding rod, a rear sliding rod, a left limit guiding box, a right limit guiding box, a convex column, a claw and a rubber strip. A plurality of left limit guiding boxes are welded on the outer side of the left intermediate beam, and a plurality of right limit guiding boxes are welded on the outer side of the right intermediate beam; both ends in the length direction of the front sliding rod and the rear sliding rod are respectively inserted into the left limit guiding box and the right limit guiding box, and there is a gap between the two ends and the inner walls of the left limit guiding box and the right limit guiding box. The connection of the present invention has good reliability and long service life.

The invention belongs to the technical field of aerospace power plasma enhanced combustion, and aims to solve the problems of poor discharge stability and short service life of existing plasma actuators. It specifically relates to a three-dimensional rotating sliding arc plasma actuator device, comprising: an isolation support, which is provided with a first inlet and an eccentric inlet; an actuator shell composed of a first column segment, a second column segment, and a third column segment; the inner wall of the second column segment is provided with a raised thread line; the inner wall of the third column segment is provided with a cathode electrode; one end of the central electrode is connected to the anode electrode, and the other end is cantilevered to the inside of the third column segment, and a tapered electrode is provided on the outer side thereof, and a sliding arc is generated at the minimum distance between the tapered electrode and the cathode electrode; in a working state, a preset gas is injected from the eccentric inlet and then spontaneously rotates and flows, and blows the sliding arc after passing through the raised thread line and the tapered electrode to form a three-dimensional rotating sliding arc; the invention can realize enhanced combustion, and greatly improve the discharge stability, uniformity and service life of the device.

The utility model provides an automobile chassis steering rod, and belongs to the technical field of automobile accessories. The problem that an existing steering rod is short in service life is solved. The automobile chassis steering rod comprises a pull rod body, connecting plates are welded to the left side and the right side of the pull rod body correspondingly, the outer sides of the connecting plates are sleeved with mounting inserting shells, the tops and the bottoms of the connecting plates are fixedly connected with damping springs and dampers correspondingly, ball cup bodies are welded to the outer sides of the mounting inserting shells, and ball pins are inserted into the bottoms of the ball cup bodies; the surface of the ball cup body is sleeved with a protective sleeve, the protective sleeve comprises an elastic rubber sleeve, the outer side of the bottom of the elastic rubber sleeve is fixedly connected with a protective outer sleeve, and a protective inner pad is glued to an inner cavity of the protective outer sleeve. The shock absorber has the advantages of being good in shock absorption effect, long in service life and the like.

The invention relates to a decommissioned lithium battery clustering method for evaluating service life, which comprises the following steps of: firstly, dividing batteries into short-life batteries and secondary usable batteries through an accelerated aging cycle test; the short-life batteries are classified into a class A and a class B according to the service life; collecting the discharge data of the first three cycles of the short-life battery as a training set; inputting the training set into a convolutional neural network for training so as to judge whether the two batteries are from the same group or not; collecting test sets, and comparing the test sets with the trained convolutional neural networks one by one; based on all the convolutional neural networks, calculating an adjacent matrix, grouping the batteries, and gathering the batteries with similar residual lives into one group; and finally, evaluating the performance of the battery pack in a normalized life loss mode. According to the method, the remaining service life of the battery is used as a battery classification feature, the batteries with similar remaining service life are clustered into one class, the service life loss of battery classification is reduced, and the secondary service life utilization rate of the retired battery is improved.

This invention relates to the technical field of road engineering, and in particular to a method for converting old road structures into long-life pavement structures based on low-carbon cold recycling, comprising the following steps: S1, milling and recycling of the old pavement layer; S2, conversion of the semi-rigid base course system by vibratory compaction using a road roller to convert the semi-rigid base course into a granular flexible subbase course; S3, injection of a semi-flexible isolation layer; injection of a highly permeable slurry into the crushed base course to form a flexible recycled isolation layer; S4, forming of the flexible recycled base course; uniformly spreading a mixture of milled recycled material and new aggregate on the isolation layer, and simultaneously spraying and injecting bio-based modified emulsified asphalt; S5, laying of a low-carbon surface layer; spraying a modified emulsified asphalt tack coat onto the surface of the flexible recycled base course, followed by spreading a rubber asphalt concrete surface layer, and finally compacting it. The construction method of this invention solves the problems of "high carbon emissions, rapid recurrence of reflective cracks, and short lifespan" in traditional old road reconstruction and expansion.

The present invention provides an adaptive height-adaptive bionic humanoid robot based on a modular, split design, comprising: a head assembly; and a support frame disposed at the bottom of the head assembly. The support frame includes a crossbeam, a turntable, two first support rods, a fixing rod, a first slot, two second support rods, two side plates, and a second slot. The adaptive height-adaptive bionic humanoid robot based on a modular, split design provided by the present invention can achieve low-noise, high-precision, and long-life operation during robot movement and assembly using servo motor drive. Height adjustment is achieved through the support frame. The use of a split shell and modular arm structure solves the problems of high noise, short lifespan, low precision, low overall modularity, non-replaceable shell, and non-adjustable internal frame height in existing bionic humanoid robots.

The invention provides a multifunctional waistband which comprises a pressing cover plate and a hinged base, the pressing cover plate is rotatably connected to the hinged base through a fixing shaft, a cavity pipeline is designed in the pressing cover plate, one end of the pressing cover plate is provided with locking teeth, and a woven belt or a leather belt is fixed by means of occlusion, extrusion or friction and the like; a leveraging groove is formed in the hinged base to enhance the bearing capacity, the hinged base is suitable for outdoor exploration or rescue scenes, and a C-shaped ring is connected to one side of the interior of the hinged base and used for drooping or pet traction; the two ends of the waist belt are connected with belt bodies of the waist belt, and the belt bodies are connected to the hinged bases in a rapid mode. Through the innovative design of the pressing cover plate and the hinged base, the problems that an existing waistband is single in function, poor in compatibility, short in service life and the like are solved, and the waistband solution which is multifunctional, high in adaptability and long in service life is provided. The device is simple in structure and easy to produce and maintain, and has wide market application prospects.

The invention discloses a long-service-life carrier roller with an external heat dissipation type bearing seat, and belongs to the field of conveyor carrier rollers, the long-service-life carrier roller comprises a barrel and a roller shaft, the bearing seat and a bearing are mounted between the barrel and the roller shaft, the bearing seat comprises a bearing mounting part, a heat dissipation groove is formed between the outer wall of the bearing mounting part and the barrel, and the outer wall of the bearing mounting part is provided with a heat dissipation groove. The outer side of the radial direction of the bearing is provided with the heat dissipation groove which is open to the external environment, and the problems that in the prior art, a carrier roller is poor in heat dissipation capacity, so that the service life of the bearing is short, and a plastic carrier roller is prone to deformation and is not suitable for the high-speed conveying working environment are solved.

The utility model relates to a screw conveyor, in order to solve the problems of complex structure, high maintenance cost, short life of existing bearing hanging device, and put forward a kind of hanging device for screw conveyor, including coaxial setting upper drive shaft and lower drive shaft;Upper drive shaft includes upper connecting shaft and the bearing fixed seat of symmetrical setting in the both ends of upper connecting shaft, and the bearing seat is set up on two bearing fixed seats, and bearing seat is provided with upper bearing, and the middle part of upper connecting shaft is provided with upper idler;Lower drive shaft includes lower connecting shaft and multiple pins, and the both sides of lower connecting shaft are symmetrically set with shaft sleeve and spiral shaft from inside to outside, and multiple pin through holes are provided on the side wall of the both sides of lower connecting shaft, and the position corresponding with both sides pin through hole is provided with pin hole on spiral shaft, and pin passes through corresponding pin hole and pin through hole and is fixedly connected with two spiral shafts on the both sides of lower connecting shaft;The middle part of lower connecting shaft is provided with lower idler, and upper idler and lower idler are connected by chain or flexible conveyor belt.

The utility model relates to the field of cables, and provides a bending-torsion-resistant high-flexibility drag chain cable. The utility model aims to solve the problems of short service life and poor safety caused by conductor breakage, insulating layer abrasion and sheath layering of the traditional drag chain cable under the working conditions of frequent bending and torsion, and adopts the main scheme that the drag chain cable comprises a superfine stranded conductor (1) which is formed by multiple copper wires with the wire diameter range of 0.08-0.15 mm in a compound stranding manner; the thermoplastic rubber insulating layer (2) is coated outside the superfine twisted conductor (1); the colloid filling layer (3) is filled among the plurality of insulated conductors; and the integral thermoplastic rubber outer sheath (4) is coated outside the colloid filling layer (3), the thickness of the integral thermoplastic rubber outer sheath (4) is 1.2-2.0 mm, and no layered interface exists between the outer sheath (4) and the insulating layer (2).

A battery life early prediction method based on pre-classification and LSTM-CNN, which uses capacity difference data during discharging process to extract features, determines the classification interval of samples through unsupervised learning clustering method, divides into long life group and short life group according to the actual life distribution of the battery, constructs and trains a new superposition model of LSTM and CNN network suitable for battery sample classification and life prediction, first classifies the new sample through the LSTM-CNN classification model, matches different life prediction models, and then predicts the battery life through the LSTM-CNN prediction model, realizes the early prediction of battery life by using a small amount of data, the model structure is simplified, and the prediction accuracy and efficiency are significantly improved.

The application discloses a cement pavement "white to black" long-life epoxy asphalt thin-layer overlay and a construction method thereof. The epoxy asphalt thin-layer overlay structure is sequentially composed of a modified emulsified asphalt bonding layer, a 2cm AC-5 rich-oil modified asphalt mixture stress absorption layer and a 4cm AC-13 high-toughness plastic epoxy asphalt mixture surface layer from bottom to top. The core lies in that high-toughness plastic epoxy modified asphalt is used as a binder, which has excellent flexibility and strength. The structure can effectively reduce more than 50% of reflection cracks, and the road performance of the surface mixture is improved by more than 50% compared with ordinary asphalt mixture. The application realizes a total overlay thickness of only 6cm, reduces initial investment and material consumption, improves the durability of the pavement, prolongs the design service life by more than 50%, and solves the technical problems of thick overlay, easy damage and short service life in traditional "white to black" technology.

The invention discloses a mute joint gear applied to a robot, relates to the technical field of medical instruments, and solves the problems that although a joint gear applied to a robot in the prior art can partially reduce noise, the joint gear is high in cost, short in service life (a harmonic reducer is prone to fatigue), remarkable in temperature rise and the like. An applied rehabilitation robot comprises a robot body. The robot body comprises a bottom support, a pair of shank rod pieces arranged on the bottom support, thigh rod pieces arranged on the shank rod pieces, hip supporting rod pieces arranged on the two thigh rod pieces and side rod pieces perpendicularly fixed to the bottom support, and the inner sides of the side rod pieces are connected with the hip supporting rod pieces. The plurality of integrated joints are respectively arranged on each shank rod piece and each thigh rod piece; according to the mute joint gear, the multiple continuous micro-arc segments are adopted to replace traditional involutes, meshing impact can be reduced, the tooth surface contact strength is improved, tooth surface friction can be remarkably reduced, and meshing noise is effectively restrained.

The invention relates to the technical field of lead-acid storage batteries, and particularly discloses a formula of a long-service-life lead-carbon battery negative electrode lead paste containing anisotropic graphite. The preparation method comprises the following steps: firstly, preparing thin-layer graphite by combining an oxidation-reduction method with an ultrasonic stripping process, doping anisotropic graphite (1-3% in mass ratio) into negative electrode lead paste, and compounding barium sulfate, carbon black and sodium lignin sulfonate to form a multi-stage conductive network to inhibit coarsening of lead sulfate crystal grains; and secondly, the grid structure is innovated, and the structure of a punching net grid and a special-shaped graphite coating is adopted, so that the corrosion resistance can be effectively improved. Compared with a traditional storage battery not doped with anisotropic graphite, the storage battery has the advantages that the cycle life is prolonged to be larger than or equal to 800 times, the capacity retention rate after 800 times of circulation is larger than or equal to 86.3%, the capacity retention rate at the low temperature of-18 DEG C is larger than or equal to 80%, the corrosion resistance of the plate grid is improved by 50% or above, the internal resistance is reduced by 10-15%, and the technical problems that a traditional lead-acid storage battery is short in cycle life and rapid in capacity fading, and the plate grid is prone to corrosion failure are solved.

The utility model relates to date display article technical field, aims at solving the problem of single appearance design, lack of aesthetic feeling, short service life, high replacement cost every year, lack of interesting, lack of interactivity, unable to meet the playing demand and unable to improve the emotional value in prior art, provides a perpetual calendar ornament, including the main body with first bearing disc and second bearing disc, rotatable day disc and month disc are equipped on first bearing disc and second bearing disc respectively, the side of day disc away from first bearing disc has a gasket, the side of gasket away from day disc has rotatable week disc, the side of week disc away from day disc has connecting piece, the middle part of connecting piece has magnifying glass, and the shaft center place of first bearing disc and second bearing disc is detachably connected at both ends of connecting piece respectively. The utility model has the beneficial effects of novel appearance design, appearance is beautiful, long service life, low replacement cost without needing every year, convenient for improving personnel interesting, convenient for improving personnel interactivity, meeting the playing demand and improving the emotional value.

The utility model discloses a long-life needle plate for ceramic fiber, which belongs to the technical field of ceramic fiber processing equipment and comprises a needle pricking machine main body, the main body is provided with a main shaft, an eccentric wheel, a push rod, an upper needle plate, a stripping guide plate, a lower needle plate, a stress guide plate and the like, and the top of the upper needle plate is sequentially provided with an aluminum magnesium alloy base plate, high-temperature-resistant fluororubber and a nylon plate. The aluminum magnesium alloy base plate is used for enhancing strength, the high-temperature-resistant fluororubber and the nylon plate are used for improving abrasion resistance, the top of each pricking needle is of an L-shaped structure and is fixed through a countersunk bolt, the root of each pricking needle is matched with a through hole in each plate to guarantee installation precision, the needle plate grooves are formed in the outer sides of the needle plates, and installation stability is guaranteed through the clamping plates, the positioning grooves and the positioning pins; according to the ceramic fiber needle plate, the problems that a traditional needle plate is short in service life and prone to damage are solved, and the machining quality and efficiency of ceramic fibers are improved.

The application discloses a kind of machine tool full life cycle management method and system, belong to equipment management technical field, solve the problem that existing machine tool management only concerns operation and maintenance link, lack of whole-process management and control, fault early warning lag and short service life;The system includes equipment account module, operation and maintenance management module, state monitoring module, predictive maintenance module and scrap management module, can realize machine tool from purchase, warehousing, installation, debugging, daily operation and maintenance, point inspection maintenance, modification and alteration until the whole-process digital management of scrapping decommissioning.Its method includes equipment filing, state monitoring, operation and maintenance execution, fault early warning and processing, performance evaluation and scrap disposal and the like steps, realize the intelligent management and control of machine tool full life cycle, reduce unplanned downtime, prolong machine tool service life, reduce maintenance cost, improve equipment overall efficiency (OEE), adapt to the machine tool management needs of various machine processing enterprises.