32results about How to "Reduce serious damage" patented technology

The invention discloses a method for preparing electrolytic manganese slag ecological cement, and belongs to the field of building materials and environment protection. The cement is characterized by consisting of calcined electrolytic manganese slag, blast furnace slag, a clinker, gypsum and an additive. The method comprises the following steps of: crushing the electrolytic manganese slag and then calcining the crushed slag at the temperature of between 500 and 900 DEG C, wherein the activity of the slag is increased to be close to that of fly ash from zero activity of volcanic ash; and grinding the blast furnace slag, the clinker, the fly ash or steel slag, the gypsum and the additive together or respectively according to a certain proportion and uniformly mixing the materials to prepare the electrolytic manganese slag ecological cement, wherein the amount of the calcined electrolytic manganese slag in the mixture is 10 to 50 percent. The method has the advantages of circularly utilizing a great amount of accumulated electrolytic manganese slag on a large scale and relieving serious damage of the electrolytic manganese slag to the environment, along with simple process, high product quality, low production cost and high economic, environmental and social benefit.

The invention discloses an illite / montmorillonite mixed-layer clay sterilization suspending agent, which is prepared from the following raw materials in percentage by weight: 40-70 percent of illite clay mineral, 15-40 percent of montmorillonite clay mineral and 5-30 percent of inorganic sterilization additive. Since the raw materials are natural nanomaterials which have the performance of permanent suspension property and dispersibility, and copper sulfate, carboxymethyl cellulose and alkyl quaternary ammonium salt powder are added, the unique dispersibility and strong suspension property of the clay micro / nano level powder in water are kept, and the sterilization capacity is also achieved. The inorganic suspending agent has the characteristics of high efficiency, low toxicity, environmental friendliness and safety, the suspension rate reaches over 90 percent, the dispersibility and the suspension property of the pesticide can be kept for long time, the problem of super-standard pesticide caused by the conventional organic suspending agent is solved, and pollution to environment and serious injury to human bodies caused by pesticide residue in crop products can be effectively reduced.

The invention relates to a Schlemm tube expansion bracket and a combined body of the Schlemm tube expansion bracket. The expansion bracket is a hollow cylindrical shell; the cylindrical surface is formed by a continuous round curve loop bent and folded from an alloy wire; the surface of the alloy wire is coated with a coating of 10-50 microns, and the coating comprises an adhesive bottom layer and a drug layer. The tube expansion bracket disclosed by the invention can reduce the damage to the wall of a Schlemm tube, reduces restenosis and multiplication occurrence rate of a cavity of the Schlemm tube, and has good soft performance. The Schlemm tube expansion bracket disclosed by the invention can effectively and lastingly release the drug on a narrow lesion site, and guarantees local precise drug delivery of a target lesion point while reducing a serious damage on the wall of the Schlemm tube caused by the bracket wall, and therefore, the restenosis occurrence rate of the Schlemm tube can be effectively reduced, thereby achieving the purposes of promoting aqueous humour discharge, reducing intraocular tension and treating glaucoma.

The invention discloses a method for making Tibetan paper by hand, relates to a papermaking technique, and in particular relates to the method for making the Tibetan paper by hand. The method provided by the invention is used for solving the problems that in the existing method for making the Tibetan paper by hand, the output is limited, the vegetation ecology is damaged, the quality of paper is low, the environment is polluted, and the like. The method comprises the following steps: cooking endothelium of thymelaeaceae wikstroemia stem and endothelium of stellera chamaejasme L. as raw materials; adding in a defined amount of potassium hydroxide in the cooking process; adding a defined amount of cactus juice as a dispersing intensifier into paper pulp; eliminating whiteness of the paper pulp with a defined amount of Coptis chinensis extract liquid according to the dyeing requirement; and discharging the waste liquid generated in the processes of raw material cooking and rinsing after being subject to flue gas treatment. The method provided by the invention retains the characteristics of the raw materials and processes of traditional Tibetan paper. The method for making Tibetan paper by hand is environment-friendly. The acquired Tibetan paper is excellent in uniformity, is mothproof and mildew-proof, can be stored for a long term and is flexible and folding-resisting. The appearance of the acquired Tibetan paper is laden with history. The Tibetan paper acquired by using the method can be used as a high-rank material for government document making, various classic Confucian texts, literature masterpiece printing, and Tibetan cultural handwriting.

The invention discloses a cement and sandy soil mortar prepared from engineering muck instead of natural sands, and a preparation method and an application thereof. The preparation method comprises the following steps: drying and grinding waste engineering muck taken from the construction site, sieving and mixing the dried and ground waste engineering muck to form reclaimed engineering muck, and adding the reclaimed engineering muck and natural sands into a mortar stirrer according to a certain ratio in order to form a sand mixture; pouring water and cement into the mortar stirrer, adding a part of the sand mixture and a part of a water reducing agent, and performing uniform stirring; and adding the remaining sand mixture and the remaining water reducing agent, and performing uniform stirring to prepare the cement and sandy soil mortar prepared from engineering muck instead of natural sands. The preparation method provided by the invention has the advantages of realization of full utilization of a large amount of the engineering waste much through a reasonable proportioning ratio of materials, saving of river sand resources, protection of the ecological environment, reduction of the production cost and the under the engineering muck treatment cost on the premise of ensuring excellent working performances and mechanical performances of the sandy soil mortar, and excellent economic and social benefits.

The invention provides C30 concrete. One cubic meter of C30 concrete is prepared from the following raw materials: 304 to 315kg of P.O42.5R cement, 400 to 410kg of river sand, 400 to 410kg of machine-made sand, 200 to 210kg of recycled aggregate with the particle diameter being 5 to 10mm, 785 to 805kg of recycled aggregate with the particle diameter being 10 to 25mm, 82 to 88kg of tap water, 82 to 88kg of concrete stirring station recovery water, 51 to 57kg of S75 stage ore powder, 6.9 to 7.7kg of additives and 1.9 to 2.3kg of retarders; the fall highness of the C30 concrete is 200+ / -20mm. The invention also provides a preparation method of the C30 concrete. In the C30 concrete provided by the invention, the content of the tap water and recovery water is respectively 50 percent; for the mixed recovery water, the ingredients of additives are regulated, so that the fall highness of the C30 concrete is 200+ / -20mm; the quality effect identical to that of the concrete mixed by using pure tap water can be achieved; in addition, 50-percent recovery water is mixed in the C30 concrete; the C30 concrete workability is greatly changed; the use of the tap water is reduced; in addition, the recycled aggregate is obtained through crushing, processing and screening building garbage; the material cost is reduced; meanwhile, the ecological environment is effectively protected.

The invention discloses a system and method for detecting a dynamic detonation temperature of combustible dust cloud cluster diffusion. The system disclosed by the invention adopts a dust detonation temperature sensor, a temperature conduction sensitive element, a sensor supporting component, an integrated processing circuit and a computer; the detonation temperature of combustible dust can be accurately measured in real time, the reconstruction of a temperature field is realized, and the occurrence of accidental explosion of combustible dust is reduced and prevented, thereby reducing the serious damage to the surrounding environment, casualties and economic losses; the nature determination and damage consequence assessment of dust explosion incidents are realized, and the difficulties inengineering measurement are solved; and according to the temperature conduction sensitive element and the propagation speed change of pulse ultrasonic waves therein, a relationship expression betweenthe ultrasonic velocity and the detonation temperature is established, real-time dynamic measurement of the dust diffusion detonation temperature is realized, and the system has an objective application value and research value.

The present invention discloses a thermal insulation energy-saving environmentally friendly plant fiber cement composite plate and a producing method thereof, the thermal insulation energy-saving environmentally friendly plant fiber cement composite plate comprises the following raw materials by weight: 27-37 parts of vegetable fibers, 28-35 parts of Portland cement, 45-50 parts of fly ash, 10-20 parts of abandoned concrete, 1.3-2.7 parts of nano-titanium dioxide, 0.2-0.4 part of calcium fluoride, 0.3-0.6 part of calcium chloride, 0.6-0.9 part of magnesium oxide, 4-7 parts of hollow fiber, 12-15 parts of styrene-acrylic emulsion, 4-7 parts of linseed oil, 9-11 parts of rosin acid polyoxyethylene ester, and proper amount of water; the thermal insulation energy-saving environmentally friendly plant fiber cement composite plate has the advantages of thermal insulation, fire-retardance and the like, the comprehensive utilization level of plant fiber can be improved, and serious damage caused by improper handling of waste resources can be reduced.

Systems and methods are disclosed for detecting and mitigating temporary high-level impairments, in a communications channel, and subsequently, mitigating the deleterious effects of the dynamic impairments. The system includes a transmitter and a receiver. The transmitter is adapted to transmit at least one set of modulated signals. The receiver is adapted to receive the at least one set of modulated signals and mitigate temporary high-level impairment in the at least one set of modulated signals using at least one error vector received during the temporary high-level impairment.

Systems and methods are disclosed for detecting and mitigating temporary high-level impairments, in a communications channel, and subsequently, mitigating the deleterious effects of the dynamic impairments. The system includes a transmitter and a receiver. The transmitter is adapted to transmit at least one set of modulated signals. The receiver is adapted to receive the at least one set of modulated signals and mitigate temporary high-level impairment in the at least one set of modulated signals using at least one error vector received during the temporary high-level impairment.

The invention discloses an illite / montmorillonite mixed-layer clay sterilization suspending agent, which is prepared from the following raw materials in percentage by weight: 40-70 percent of illite clay mineral, 15-40 percent of montmorillonite clay mineral and 5-30 percent of inorganic sterilization additive. Since the raw materials are natural nanomaterials which have the performance of permanent suspension property and dispersibility, and copper sulfate, carboxymethyl cellulose and alkyl quaternary ammonium salt powder are added, the unique dispersibility and strong suspension property of the clay micro / nano level powder in water are kept, and the sterilization capacity is also achieved. The inorganic suspending agent has the characteristics of high efficiency, low toxicity, environmental friendliness and safety, the suspension rate reaches over 90 percent, the dispersibility and the suspension property of the pesticide can be kept for long time, the problem of super-standard pesticide caused by the conventional organic suspending agent is solved, and pollution to environment and serious injury to human bodies caused by pesticide residue in crop products can be effectively reduced.

The invention relates to a device for building of a rat spinal cord explosion injury model in the field of medical experiment devices. The device comprises a bottom plate (1), a supporting column (2) fixed on the bottom plate (1), an explosion source supporting rod (3) arranged on the supporting column (2) and an animal box (5) arranged on the supporting column (2) through an animal box supporting rod (4). The bottom plate (1) is provided with grooves (7), a seam (8) is formed in the grooves (7), the bottom of the seam (8) is provided with a sensor probe, and the box bottom (15) of the animal box (5) is provided with grooves (7) and a seam (8) which corresponding to those of the bottom plate (1). The device overcomes the defects that an existing spinal cord explosion injury model can not achieve precise explosion of a target portion and is poor in experiment accuracy and control property. The device for the building of the rat spinal cord explosion injury model is simple to operate, good in practical control, and capable of achieving the precise explosion of an injury of the target portion.

The invention discloses a thermal-insulation sound-insulation type plant fiber cement composite ribbon board. According to the invention, a teflon emulsion dipping treatment process is employed to pretreat the surfaces of plant fiber so as to allow the internal and external surfaces of the plant fiber to be coated with a polymer film, the polymer is cured after drying, then mist-like waste engine oil is sprinkled, so the entire fiber is compact, obtains certain rigidity and has improved water resistance; and then fly ash is added to modify and replace a part of cement, so the generation amount of hydrated calcium hydrate is decreased, and corrosion resistance of the plant fiber is improved. Thus, the prepared plant fiber cement composite ribbon board has the advantages of thermal insulation, sound insulation, high compactness, good permeability, low cost, etc.; the level of comprehensive utilization of plate fiber is increased; and severe damage caused by improper disposal of waste resources is reduced.

The invention relates to a fabricated double-layer steel plate swinging wall with ductility energy consumption connecting pieces, which is used for energy consumption and shock absorption of a frame structural building in an earthquake. The swinging wall disclosed by the invention structurally is formed by a double-layer steel plate wall, a main body frame structure, the ductility energy consumption connecting pieces, a wall bottom hinged support, a flexible filling material and a lateral positioning bolt. The double-layer steel plate wall is connected with the main body frame structure by adopting the fabricated ductility energy consumption connecting pieces, so that energy consumption capacity of the structure under the earthquake is reinforced; the wall bottom hinged support is arranged at the bottom of the double-layer steel plate wall, so that swing performance is sufficiently guaranteed; a strip bolt hole is formed at the position on a wall body, which is in parallel to a frame beam, and the wall body is connected with the frame beam by the lateral positioning bolt, so that a horizontal displacement of the top of the double-layer steel plate wall and a horizontal displacement of the frame beam are guaranteed to be the same; sections of the double-layer steel plate wall are connected by bolts; holes need to be opened at corresponding positions on a floor, where the double-layer steel plate wall is inserted into the floor, and the flexible material is arranged between the floor and the double-layer steel plate wall, so that direct collision between the floor and the double-layer steel plate wall is prevented.

The invention relates to the technical field of biology, in particular to elytrigia elongata external rectification potassium channel protein and a coding gene and application thereof. The elytrigia elongata external rectification potassium channel protein EeSKOR is cloned, and the amino acid sequence of the elytrigia elongata external rectification potassium channel protein EeSKOR is shown as SEQID NO. 1. It is found that the biomass and height of plants in a high-salt environment can be increased through EeSKOR, the content of H2O2 and MDA of transgenic tobacco plants is remarkably reducedthrough the overexpression EeSKOR gene under salt treatment, the SOD activity and chlorophyll content are increased, the Na + concentration of the transgenic plants is remarkably reduced, and the in-vivo K+ concentration of the transgenic plants is increased. EeSKOR can be used for improving the growth performance of the plants under high-salt stress, the salt tolerance of the plants is improved,and the elytrigia elongata external rectification potassium channel protein and the coding gene and application thereof have great significance in cultivating new salt-resistant plant varieties.

The invention provides an automobile load controller. The automobile load controller is divided into an input part and an output part, wherein the input part is machined with an internal spline by a jointing sleeve and directly connected with a one-shaft spline by the internal spline; the output torque of an engine is transmitted to the jointing sleeve (1) by a spline and transmitted to the output part by the jointing sleeve; when the torsion force required by a transmission is smaller than or equal to that required by the designed load, a shaft is normally engaged with the automobile load controller, so that the transmission operates normally; and when the torsion force required by the transmission is larger than that required by the designed load, the shaft is separated from the automobile load controller as an engaged single tooth (2) is stressed and a compression spring (4) retracts due to axial pressure, the transmission stops operating and produces hammering sounds, and then an automobile stops advancing.

The invention relates to the field of car washers. The invention discloses a vertical brush of a car washer. The vertical brush comprises a rotating roller, a cleaning brush assembly and a servo motordriving the rotating roller to rotate. The rotating roller comprises a roller body and a rotating shaft; a plurality of guide through grooves extending in the axial direction of the roller body are distributed in the outer ring wall of the roller body around the axial direction of the roller body at intervals. The cleaning brush assembly comprises a plurality of lifting blocks longitudinally distributed in the roller body at intervals, guide blocks integrally extending from the lifting blocks to the exteriors of the guide through grooves, and cleaning brush bodies located outside the roller body and fixed to the ends, away from the lifting blocks, of the guide blocks. The lifting block located at the lowermost end is a solid active lifting block. The other lifting blocks are driven lifting blocks with center holes, the upper end and the lower end of the roller body are provided with driving structures which drive the cleaning brush body to do lifting motion while rotating along with forward and reverse rotation of the servo motor, the vertical brush of the car washer can improve the overall running process, the cleaning performance is effectively improved, and great increase of the manufacturing cost is avoided.

The invention discloses an emergency stop device for searching falling objects during working of a large-scale pulverizer, which comprises an operation table arranged in an operation room, the operation table comprises a controller, the controller is electrically connected with each driving device of the pulverizer and is used for controlling the working state of the pulverizer, the controller ofthe operation table is also electrically connected with an emergency stop button arranged on the operation table, and the emergency stop button is used for emergently stopping the working state of thefirst main belt conveyor at the downstream of the crusher in an emergency stop state. The invention further discloses an emergency stop method. The problem that the reliability of the passing methodis extremely poor when the problem is solved in the current industry is solved. The probability that the falling hammer head and hammer handle are found before entering a coal tower is greatly increased, blockage, jamming and damage to a coke oven vehicle spiral feeder and a dry quenching rotary sealing valve are avoided, production continuity is guaranteed, and severe damage to equipment is reduced.

The invention discloses a protection system for improving the safety of a physical layer of an unmanned aerial vehicle. The unmanned aerial vehicle is provided with a supporting frame and rotary wings. The supporting frame comprises supporting legs, and a cross beam is connected between every two adjacent supporting legs. Buffer layers are arranged at the bottoms of the supporting legs; the buffer layers comprise a first buffer layer, a second buffer layer and a wear-resistant layer; the first buffer layer is a rubber layer, the second buffer layer is a polyurethane foam layer, and the wear-resistant layer is a melamine resin layer; the polyurethane layer is arranged at the bottom of the rubber layer; the melamine resin is sprayed at the bottom of the polyurethane foam layer; by setting physical protection measures, when the unmanned aerial vehicle is accidentally influenced and falls, the unmanned aerial vehicle is protected and prevented from the physical level, serious damage to the unmanned aerial vehicle during accidental falling is relieved, and the safety performance of the unmanned aerial vehicle is improved.

The invention relates to a device, for creating a rat spinal-cord blast injury model, in the field of medical experimental apparatus. The device comprises a baseplate (1), support columns (2), a blast source support rod (3) and an animal box (5). The support columns (2) are fixed on the baseplate (1), the blast source support rod (3) is mounted on the support columns (2), and the animal box (5) is mounted on the support columns (2) through an animal box support rod (4). A groove (7) is formed in the baseplate (1), and a gap (8) is formed in the groove (7). A sensor probe is arranged at the bottom of the gap (8). A groove (7) and a gap (8) corresponding to the baseplate (1) are formed in the box bottom (15) of the animal box (5). By the device, the defects that accurate blasting of target positions cannot be realized by existing spinal-cord blast injury models and experiment accuracy and overall controllability are poor are overcome; the device is simple to operate, good in actual control and capable of accurately controlling injuries of the target positions.

The invention provides a method and device controlling vehicle overload and a vehicle, and belongs to the technical field of vehicles. The device comprises an alarm device, distance sensors, travel switches, time relays and a central control unit; the alarm device is arranged on the vehicle; each distance sensor is arranged on one suspension of the vehicle and used for measuring the distance value between the suspension where the distance sensor is located and a vehicle floor; each travel switch is arranged on one suspension of the vehicle and is turned off when the distance value measured by the corresponding distance sensor is smaller than a first threshold value; each time relay is connected with one travel switch and used for keeping the turn-off time of the corresponding travel switch; the central control unit is used for controlling the alarm device to give an alarm when the timekeeping time of one or more time relays is larger than a second threshold value. By means of the technical scheme, vehicle overload can be avoided.

The invention relates to a plastic template, which comprises an upper surface layer, a lower surface layer and an intermediate core layer, wherein, the upper and lower surface layers are manufacturedaccording to the following steps: magnesium hydroxide powder is treated with r-aminopropyl triethoxysilane in a high speed mixing machine; the treated magnesium hydroxide is evenly pre-mixed with atactic polypropylene, antimony trioxide, decabromodiphenyl oxide, benzoyl peroxide, calcium stearate, barium stearate, zinc oxide, bis(2,4-dicumylphenyl)pentaerythritol diphosphite in proportion in the high speed mixing machine; the magnesium hydroxide is extruded on a double screw rod extruding machine, cooled in water and granulated; the intermediate core layer is manufactured by adding 1 percent (weight) of AC foaming agent and 2 percent (weight) of silicone oil into the recycled polypropylene through the conventional method. The invention has the advantages that the price of the raw materialis inexpensive, the production efficiency during the production is high, the labor intensity is low, the energy consumption is low and the production cost is low; the product can be repeatedly used, the maintenance is not required, and the product can be completely recycled after being rejected during the construction.

The present invention relates to the field of biotechnology, in particular to a rectifying potassium channel protein outside of Triticum aurantiae, and its encoding gene and application. The present invention clones the outer rectifier potassium channel protein EeSKOR of R. longa, and its amino acid sequence is shown in SEQ ID NO.1. In the present invention, it is found that EeSKOR can increase the biomass and plant height of plants in a high-salt environment, and over-expression of the EeSKOR gene under salt treatment significantly reduces the H content of transgenic tobacco plants. 2 O 2 and MDA content, increased SOD activity and chlorophyll content, significantly decreased Na in transgenic plants + concentration, increasing its K in the body + concentration. EeSKOR can be used to improve the growth performance of plants under high salt stress and improve the salt tolerance of plants, which is of great significance for the cultivation of new varieties of salt-tolerant plants.

The invention relates to a fabricated double-layer steel plate swinging wall with ductility energy consumption connecting pieces, which is used for energy consumption and shock absorption of a frame structural building in an earthquake. The swinging wall disclosed by the invention structurally is formed by a double-layer steel plate wall, a main body frame structure, the ductility energy consumption connecting pieces, a wall bottom hinged support, a flexible filling material and a lateral positioning bolt. The double-layer steel plate wall is connected with the main body frame structure by adopting the fabricated ductility energy consumption connecting pieces, so that energy consumption capacity of the structure under the earthquake is reinforced; the wall bottom hinged support is arranged at the bottom of the double-layer steel plate wall, so that swing performance is sufficiently guaranteed; a strip bolt hole is formed at the position on a wall body, which is in parallel to a frame beam, and the wall body is connected with the frame beam by the lateral positioning bolt, so that a horizontal displacement of the top of the double-layer steel plate wall and a horizontal displacement of the frame beam are guaranteed to be the same; sections of the double-layer steel plate wall are connected by bolts; holes need to be opened at corresponding positions on a floor, where the double-layer steel plate wall is inserted into the floor, and the flexible material is arranged between the floor and the double-layer steel plate wall, so that direct collision between the floor and the double-layer steel plate wall is prevented.

The invention belongs to the technical field of metallurgy production equipment design and manufacturing, and discloses a rod mill, in particular a rod mill used for calcium roasting clinker grinding. The rod mill for the calcium roasting clinker grinding is convenient to replace, and serious damage to an abrasive cylinder by a grinding system can be effectively lowered. The rod mill comprises the abrasive cylinder and abrasive components arranged in the abrasive cylinder. The rod mill further comprises an integrated quick-disassembly type interior lining panel; and the grinding inner wall of the abrasive cylinder is protected through the integrated quick-disassembly type interior lining panel.

The invention discloses a protection method for improving the safety of a physical layer of an unmanned aerial vehicle. The method comprises the following steps: S1, detecting the accidental state of the unmanned aerial vehicle; S2, instructing an air nozzle to generate reverse impact force, where a controller of the unmanned aerial vehicle controls a first electromagnetic valve to be opened, and the air nozzle blows air to generate the reverse impact force; and S3, inflating an buffer air bag, where the controller of the unmanned aerial vehicle controls a second electromagnetic valve to be opened to inflate the buffer air bag. When the unmanned aerial vehicle lands, through the buffer air bag, the damage degree caused by air crash of the unmanned aerial vehicle is reduced, and the safety performance of the unmanned aerial vehicle is improved.

The invention discloses a multifunctional oil discharge tank for a gas station. The multifunctional oil discharge tank comprises a support frame, wherein a tank body is fixedly connected to the top ofthe support frame, the tank body is composed of a movable cover and a bottom shell, and the movable cover is hinged to the top of the bottom shell; an alarm is fixedly installed at the bottom of themovable cover; buffer mechanisms are fixedly connected to the corners of the bottom of the support frame; and a controller and a temperature sensor are fixedly arranged at one end of an inner wall ofthe bottom shell. According to the multifunctional oil discharge tank for the gas station, the buffer mechanisms can greatly reduce severe damage to the oil discharge tank caused by accidental impactin the external environment, so that the oil discharge tank is not easily damaged, and the service life of the oil discharge tank is prolonged; a fire-resistant layer can greatly improve the fire-resistant performance of the oil discharge tank, the oil discharge tank is not easily burnt out when a fire occurs, and the service life is prolonged; and the alarm can give an alarm when the fire occursto timely inform a worker of coming to maintain and extinguish the fire, so that the safety performance is greatly improved, and a serious safety accident is avoided.

The invention discloses an axial magnetic and gaseous combination bearing device and belongs to the technical field of high-speed rotary machinery. The axial magnetic and gaseous combination bearing device comprises a rotor spindle, a casing, a magnetic bearing thrust disc, an axial electromagnetic bearing, a first thrust disc and a dynamic pressure gas thrust bearing; the casing is used for mounting the rotor spindle; the magnetic bearing thrust disc is used for supporting the middle of the rotor spindle; the axial electromagnetic bearing is used for controlling the magnetic bearing thrust disc to be kept in the suspension state; the first thrust disc is used for supporting the end part of the rotor spindle; the dynamic pressure gas thrust bearing is used for controlling the first thrustdisc to be kept in the suspension state; permanent magnets are fixedly connected with the dynamic pressure gas thrust bearing and the first thrust disc and are spiral; and the dynamic pressure gas thrust bearing and the first thrust disc repel mutually. The axial magnetic and gaseous combination bearing device can provide auxiliary support, also has a bearing protection function and can effectively improve the working performance of a magnetic bearing.

The invention discloses a high-hardness thermal-insulation plant fiber cement composite ribbon board. According to the invention, a polyvinyl acetate emulsion immersion treatment process is employed to pretreat the surfaces of plant fiber so as to allow the internal and external surfaces of the plant fiber to be coated with a polymer film, then mist-like paraffin oil is sprinkled, so the entire fiber is compact, obtains certain rigidity and has improved water proofness; and then fly ash is added to modify and replace a part of cement, so the generation amount of hydrated calcium hydrate is decreased, and corrosion resistance of the plant fiber is improved. Thus, the prepared plant fiber cement composite ribbon board has the characteristics of high strength, high hardness, high flatness, thermal insulation performance, etc.