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99results about How to "Reduce the impact of damage" patented technology

Rear fairing system for a vehicle

A rear fairing system for a vehicle includes a roof foil on top of the vehicle roof and sidewall foils pivotally mounted to the vehicle sidewalls. The roof foil includes downwardly facing concavity and a roof foil curved convex upper surface extending laterally across the vehicle roof. A spring extends laterally across the vehicle roof in the downwardly facing concavity. A door foil extends aft of the roof foil with a curved convex upper surface continuing the roof foil curved convex upper surface. Cables extend from the vehicle rear doors to the sidewall foils adjacent the sidewall foil free edges. The cables are taut and strain the sidewall foils toward the vehicle rear doors with the vehicle rear doors closed.
Owner:UTILITY TRAILER MANUFACTURING COMPANY

Control system and method for intelligent terrace grinding machine

The invention relates to a control system and method for an intelligent terrace grinding machine. The system comprises a positioning control device which is arranged over a drive motor of a grinding disc, and an indoor positioning module. The positioning control device comprises a first micro-control processing module, a moving end positioning module and a first communication module. The first micro-control processing module rotates with a driving wheel and is connected with a driving device of a grinding disc driving motor. A moving control terminal comprises a second micro-control processing module, an electronic map module, a touch display module and a second communication module. The method includes the steps that the running path of the terrace grinding machine is determined through an indoor Bluetooth base station; and after a positioning control module is started, the terrace grinding machine begins grinding according to the running path. According to the control system and method for the intelligent terrace grinding machine, the indoor terrace can be automatically ground effectively, and consumed labor cost is reduced.
Owner:JINJIANG XINGYI POLISHING MACHINERY

Method and apparatus for constructing three-dimensional microenvironment

The invention discloses a method and an apparatus for constructing three-dimensional microenvironment. The method provided in the invention comprises the following steps: 1) putting sample liquid on a substrate of the apparatus for constructing three-dimensional microenvironment to form a liquid thin layer; 2) covering a micro-sponge support or a micro-sponge support array of the apparatus with the substrate to realize three-dimensional micro-scale loading of the sample liquid after the sample liquid disperses into the micro-sponge support or the micro-sponge support array, so as to complete the construction of the three-dimensional microenvironment. The invention provides a simple and widely-applicable platform for the research of accurately-controllable high-flux three-dimensional microenvironment in fields of biology, pharmacy, medical science, and the like. The method provided by the invention can be used singly, or can be combined with other traditional loading modes; high-efficient high-flux synchronous loading can be realized with a low using amount of the liquid, which greatly reduces the requirements for drugs, materials, and cell sample sizes, and reduces damage to living cells.
Owner:TSINGHUA UNIV

Environment-friendly heat-resistant anti-aging thermos bottle

The invention discloses an environment-friendly heat-resistant anti-aging thermos bottle which comprises a bottle body, a liner, an upper cover assembly and a thermal-insulation plug, wherein the liner is arranged in the bottle body; the upper cover assembly is buckled on the top end of the bottle body; the thermal-insulation plug is matched and connected with the liner opening; the thermal-insulation plug comprises a base and a seal sleeve; the seal sleeve is connected with the side wall of the base in a seal mode; and the seal sleeve is prepared from silicone rubber. The silicone rubber is prepared from unvulcanized dimethyl silicone rubber, unvulcanized methylvinyl silicone rubber, unvulcanized methylphenyl silicone rubber, a heat-resistant additive, precipitated silica white, modified hydrophilic vapor-phase silica white, magnesium carbonate, modified glass microballoon, montmorillonite, quartz powder, diatomite, titaniferous inorganic compounds, platiniferous organic complex, silazane, siloxane, wax, a peroxide crosslinking agent, aryl phosphite and an anti-aging agent 2246. The environment-friendly heat-resistant anti-aging thermos bottle has the advantages of environment friendliness, heat resistance and aging resistance.
Owner:蚌埠市耀得保温容器有限公司

Vertical prestress steel pipe supporting structure for large-section subsurface tunnel and construction process

The invention discloses a vertical prestress steel pipe supporting structure for a large-section subsurface tunnel and a construction process. Firstly, a lower small guide hole is constructed, and a strip foundation is constructed; then an upper small guide hole is constructed, manual hole digging is conducted on the upper small guide hole so that a vertical channel can be formed, a vertical steel pipe support is installed, a movable end is arranged at the bottom end of the steel pipe support, the support is located on the strip foundation, and a fixing end is arranged at the top end of the steel pipe support and supported by an arch joist steel profile steel longitudinal beam; a free face is formed by the upper small guide hole, the lower small guide hole and the vertical channel, so that the adverse influences of explosion on the steel pipe support are reduced; reliable preliminary linings and the vertical support with high rigidity are quickly formed on an arch, prestress is applied in the digging process according to an information monitoring result, and active control is conducted on deformation of the arch. By the adoption of the technical scheme, the vertical prestress steel pipe supporting structure has the advantages that arch crown settlement can be effectively controlled, the explosion vibration speed is reduced, the temporary support is protected, construction safety is guaranteed, the construction period is shortened, and cost is low.
Owner:RANKEN RAILWAY CONSTR GROUP

Hydropower station free-surface-pressurized flow tail water system

The invention provides a hydropower station free-surface-pressurized flow tail water system which is formed by sequentially connecting a tail water pipe, a connecting segment, a free-surface-pressurized flow tail water hole or is formed by sequentially connecting the tail water pipe, the connecting segment, a downstream pressure adjusting room and the free-surface-pressurized flow tail water hole. According to the hydropower station free-surface-pressurized flow tail water system, the minimum absolute pressure of the section of an inlet of the trail water pipe can meet the standard requirement more easily, and unit air supplying difficulties caused by the excessively low unit installing elevation can be avoided.
Owner:WUHAN UNIV +1

Soft rock stratum underground excavation large-section tunnel construction method and supporting system

ActiveCN105604576ASmall secondary subsidenceEffective blastingUnderground chambersTunnel liningSupporting systemPipe support
A soft rock stratum underground excavation large-section tunnel construction method comprises the following steps of conducting excavation on the upper portion of the center of an arc part to form an arc part small pilot tunnel, and arranging an arc crown vertical supporting system in the arc part small pilot tunnel; conducting excavation to form a left upper pilot tunnel, a left middle pilot tunnel, a right upper pilot tunnel, a left lower pilot tunnel and a right lower pilot tunnel in sequence, and reserving a core rock wall in each pilot tunnel; pouring inverted arc concrete on the left side and right side and inverted arc backfill; pouring the arc part of a tunnel and a side wall secondary lining; excavating the core rock walls; pouring inverted arc concrete and inverted arc backfill. A supporting system adopted in the construction method comprises the arc part small pilot tunnel, a manual hole digging pile, the arc crown vertical supporting system, a side wall preliminary bracing and a core rock wall bracing, wherein the arc crown vertical supporting system comprises a steel pipe support penetrating through the manual hole digging pile and the arc part small pilot tunnel, and an independent foundation is arranged on the bottom of the steel pipe support and located on the bottom of the manual hole digging pile. According to the soft rock stratum underground excavation large-section tunnel construction method and the supporting system, sedimentation of the arc part of the tunnel can be effectively controlled, excavation footage is large, construction progress is accelerated, arc part secondary lining can be realized early, and construction safety is guaranteed.
Owner:RANKEN RAILWAY CONSTR GROUP

Method for prolonging service life of organic light emitting device and display device

The invention discloses a method for prolonging the service life of an organic light emitting device. The method includes the steps of dividing a display screen into a plurality of sub-regions, calculating a service life influencing factor of each sub-region, calculating the luminance ratio coefficient of each sub-region according to image features and the service life influencing factor of the sub-region, calculating the actual display luminance of the display screen according to the luminance ratio coefficient, and outputting images according to the actual display luminance. The invention further provides a display device. With the service life influencing factors and the image features as considering factors, the luminance ratio coefficients are calculated and luminance processing is conducted, the damage influences on the whole image quality are reduced, high and low gray level mixed sub-regions select to increase or decrease the processing strength according to the simplicity and complexity degree of the images and the positions where the sub-regions are located, the image luminance is adjusted on the premise of ensuring the image quality influences, the recession of the OLED is delayed, and the service life of the OLED is prolonged.
Owner:TCL CHINA STAR OPTOELECTRONICS TECH CO LTD

Resource allocation method for bi-directional SWIPT relay system under hardware damage condition

The invention provides a resource allocation method for a bi-directional SWIPT relay system which can alleviate hardware damage under the consideration of actual hardware damage conditions. The methodcomprises the following steps: S1, constructing a signal transmission model; S2, constructing an optimization formula; S3, according to the upper bound value of the transmission performance under thehardware damage, adopting a low-complexity optimization method based on the relaxation upper bound to obtain the time allocation value of the system; and S4, obtaining a closed-form solution of the power split ratio according to the time allocation value. The beneficial effect of the invention is that the method of the invention reduces the influence of the hardware damage, and the obtained performance curve is the approximate solution of the theoretical curve.
Owner:CHONGQING COLLEGE OF ELECTRONICS ENG +1

Rotary cyclic carbon capture device and method based on three-bed reaction

The invention belongs to the field of related equipment of the carbon capture technology and particularly relates to a rotary cyclic carbon capture device and method based on three-bed reaction. The rotary cyclic carbon capture device comprises a rotating shaft and one or more sets of circulatory reaction units, wherein each set of circulatory reaction unit comprises three reactors which are arranged side by side in the circumferential direction of the rotating shaft and are uniformly distributed; a cavity is formed in each reactor and used for placing an absorbent; a gas inlet is formed in the top of each reactor; a gas outlet is formed in the bottom of each reactor; and each gas inlet and the corresponding gas outlet are communicated with the cavity in the corresponding reactor. The invention further discloses a method adopting the rotary cyclic carbon capture device to perform circulatory carbon capture. The problem of adsorption performance degradation caused by the reasons that pores are reduced by high-temperature sintering of a calcium-based absorbent and the pore structures are destroyed by CaSO4 impurities generated by a SO2 reaction is solved, meanwhile, the problem of abrasion of an absorbent is solved, the energy consumption is greatly reduced, and the rotary cyclic carbon capture device is compact in structure and has the advantages of high economical efficiency, excellent environmental friendliness and the like.
Owner:HUAZHONG UNIV OF SCI & TECH

Self-suspension propping agent and preparation method thereof

The invention provides a preparation method of a self-suspension propping agent. The preparation method comprises the following steps: mixing a pre-heated propping agent matrix and a polymer capable of being swollen with water; in a stirring process, spraying a silane coupling agent solution into a mixture; and reacting for 3h to 4h at a temperature of 60 DEG C to 80 DEG C to obtain the self-suspension propping agent. According to the preparation method of the self-suspension propping agent, the silane coupling agent and the polymer capable of being swollen with the water are used for coating the propping agent matrix so that a cross-linking agent is realized; the silane coupling agent is connected with the propping agent matrix by adopting a siloxane chemical bond and is also subjected to a chemical reaction with the polymer to form a chemical bond; the self-suspension propping agent provided by the invention has a good anti-shearing capability and a great buoyant force; the self-suspension propping agent has long suspension time in clean water; a toxic organic solvent does not need to be added and a gel breaking performance is good; and gel breaking liquid has a relatively good anti-swelling performance and a strong crack backward flowing capability.
Owner:GUANGHAN HUAXING NEW TECH DEV INST GENERAL PARTNERSHIP +1

Thrombus taking stent, preparation method of thrombus taking stent and thrombus taking device

The invention relates to medical instruments, in particular to a thrombus taking stent, a preparation method of the thrombus taking stent and a thrombus taking device. The thrombus taking stent mainlycomprises a stent body produced with a shape memory alloy as a raw material, a hydrophilic layer is arranged on the outer surface of the stent body, and a micro-nano porous structure layer is arranged on the inner surface of the stent body. Under the structure that the diameter of the stent body is smaller than 2 mm, the effects of optimizing the grabbing capacity of the stent body and minimizingthe damage effects on blood vessel walls can be achieved, the operation performing difficulty and time can be reduced and shortened to a great extent during an operation, and the operation efficiencycan be effectively improved.
Owner:XUANWU HOSPITAL OF CAPITAL UNIV OF MEDICAL SCI +1

Indoor soilless procambarus clarkii culture method and artificial cave for same

The invention relates to an indoor soilless procambarus clarkii culture method and an artificial cave for the same. The method comprises steps as follows: a multi-layer stereoscopic box rack is arranged indoors, and a plurality of aquaculture water tanks are placed on each layer of stereoscopic box rack; plastic aquatic plants and the artificial cave are arranged in each tank in proportion according to size of the tank, a long strip-shaped corridor is reserved between the artificial cave and the aquatic plants after the artificial cave and the aquatic plants are placed, baits are mainly thrownin the corridor, a few short and small passages are reserved in other places, and a small part of food is thrown to the passages; adult procambarus clarkia are cultured at the density of 30-40 / m<2>,or juvenile procambarus clarkii are cultured at the density of 400-800 / m<2>, or procambarus clarkii with larvae are cultured at the density of 2-4 / m<2>; the baits are thrown once in the morning and evening every day. With the adoption of the culture method with controllable temperature, controllable illumination, controllable water level and controllable feeding, the demand of normal molting of procambarus clarkii for hidden things can be met by the artificial cave and with the method of plastic aquatic plant placement.
Owner:HUAZHONG AGRI UNIV

Human immunoglobulin resisting hand-foot-and-mouth disease and preparation method of human immunoglobulin

The invention relates to human immunoglobulin resisting the hand-foot-and-mouth disease and a preparation method of the human immunoglobulin. The hand-foot-and-mouth virus-neutralizing antibody titer is larger than or equal to 1:800. The preparation method comprises steps as follows: (1) efficient positive plasma with the hand-foot-and-mouth virus-neutralizing antibody titer larger than or equal to 1:80 is screened; (2) the screened efficient positive plasma is mixed; (3) the mixed plasma is separated with a low-temperature ethanol filter pressing method, immunoglobulin components II are purified and separated with an ion-exchange column chromatography method, and the immunoglobulin with the purity ranging from 98.5% to 100% is obtained through filtration, chromatography, ultrafiltration, preparation, incubation of inactivated viruses at low pH, virus removal through nanofilm filtration and subpackaging. By means of the preparation and production method, the hand-foot-and-mouth virus-neutralizing antibody titer, the purity and the recovery rate are high, enteroviruses can be treated in a targeted manner, and the human immunoglobulin is an effective medicine for treating an enterovirus infectious disease, is safe and reliable and has higher social benefits and economic benefits.
Owner:哈尔滨派斯菲科生物制药有限公司

Metal rubber honeycomb composite soft sandwich component preparation structure and method thereof

The invention provides a metal rubber honeycomb composite soft sandwich component preparation structure and a method thereof. The metal rubber honeycomb composite soft sandwich component preparation structure includes a vacuum brazing furnace and a tooling fixture, the tooling fixture comprises a base and a support fixed to the base, a pressure plate is arranged above the base, and the support ismatched with an adjusting bolt in a threaded mode. The designed metal soft sandwich structure part is metal skin, the middle layer is a metal honeycomb core, metal rubber is clamped between the metalskin and the middle layer metal honeycomb core, under complex dynamic load, the elastic porous metal rubber mainly has the effect of damping vibration reduction, and a metal honeycomb core structure in the middle plays the role of impact resistance and energy absorption; and in addition, the metal soft sandwich structure further has the structural characteristics of light weight structure, sound absorption and thermal protection and the like. The preparation device is used for realizing the metallurgical and solid interface combination of an interface of the metal soft sandwich structure partunder the vacuum hot pressing brazing technology, and the comprehensive mechanical properties and environmental adaptability of the whole structure part are improved.
Owner:FUZHOU UNIV

Construction method of prefabricated root key-type wing plate foundation

InactiveCN111485572AGood synergyGive full play to the role of bearingFoundation engineeringArchitectural engineeringStructural engineering
The invention discloses a construction method of a prefabricated root key-type wing plate foundation. A main concrete structure is included, and comprises a column body, wing plates and prefabricatedroot keys; an embedded part is connected to the top of the column body; the wing plates are uniformly arranged on the column body, and the wing plates and the column body are vertically intersected and close to the top; and a plurality of prefabricated root keys are vertically connected to the outer side of the column body, and the prefabricated root keys extend from the inside to the outside of the column body. According to the prefabricated root key-type wing plate foundation, the vertical and horizontal bearing capacity and lateral stiffness of the foundation can be effectively improved, the pile length and diameter of the pile foundation are reduced, the expansion of the conventional foundation is canceled, so as to reduce the safety risk, construction difficulty and engineering quantity of the foundation construction, the concrete transportation engineering quantity in mountainous is reduced, and the purposes of safety and reliability, cost saving and environmental protection areachieved.
Owner:NORTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP

Power photoelectric signal generator

The invention provides a power photoelectric signal generator, belonging to a discharge simulating test device used for diagnosing insulating property of electrical equipment in a power department. The power photoelectric signal generator comprises a local discharge sampling processor containing a photoelectric sampling pipe, wherein the photoelectric sampling pipe is arranged on the upper surface of a box body of the local discharge sampling processor; 220V electric supply is introduced to two input terminals of an autotransformer B, one output terminal of the autotransformer B is sequentially connected with a capacitor C and a control switch K in series and then is connected with an upper electrode sphere, the other output terminal of the autotransformer B is connected with a lower electrode sphere, the upper electrode sphere is fixed on the lower part of an upper pressure plate, the lower electrode sphere is fixed on the upper part of a lower pressure plate, and a discharge gap is reserved between the upper electrode sphere and the lower electrode sphere; and the photoelectric sampling pipe is arranged in the collection range of discharge spark of the upper electrode sphere and the lower electrode sphere. The power photoelectric signal generator disclosed by the invention is smart and light, easy to operate and safe and reliable.
Owner:STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST +1

Post-cast awning, prefabricated reinforced concrete frame beam and post-cast awning manufacturing method

The invention discloses a manufacturing method for a post-cast awning on the side face of a prefabricated reinforced concrete frame beam. The manufacturing method comprises the steps that firstly, awning load-bearing bar holes are formed in the side face of a die of the prefabricated reinforced concrete frame beam, the interval is 300, and the upper part and the lower part are each provided with arow of the awning load-bearing bar holes; secondly, awning load-bearing bars are produced; thirdly, when the prefabricated reinforced concrete frame beam is manufactured and bars are bound, bar mechanical sleeves are embedded on the side face of the die according to the hole-formed positions of the die, and the embedding segments of the awning load-bearing bars are connected with the embedded barmechanical sleeves; and the exposed ends of the embedded bar mechanical sleeves are sealed, and exposed holes are blocked through rubber plugs; fifthly, after a reinforced concrete frame beam is bound completely, concrete is poured in a factory; sixthly, the prefabricated members are transported to a site; seventhly, after the prefabricated members are hoisted completely on site, awning formworkerecting is carried out; eighthly, the awning load-bearing bars and the embedded bar mechanical sleeves are connected and fixed; ninthly, load-bearing longitudinal bars, distributed reinforced bars and horizontal distributed bars are bound; and tenthly, concrete is poured. The invention further provides the post-cast awning and the prefabricated reinforced concrete frame beam.
Owner:SHANGHAI BAOYE GRP CORP

Semiconductor device with fuse

A semiconductor device has: a semiconductor substrate having a principal surface; a fuse circuit formed above the principal surface, the fuse circuit having fuse elements each having a predetermined breaking point; a first trench isolation region formed in a surface layer of the semiconductor substrate under the fuse circuit; and a plurality of active region dummies formed through the first trench isolation region in an area excepting a predetermined area around the predetermined breaking point. Although a dummy structure is formed also in a fuse circuit, a breaking margin is prevented from being lowered and a substrate damage is avoided, while surface flatness and line width controllability are ensured.
Owner:SOCIONEXT INC

Process for preparing soybean protein isolate with heat stability

PendingCN110679725AChange the three-dimensional structureFacilitates hydrophobic interactionsProtein composition from vegetable seedsVegetable proteins working-upFreeze-dryingCentrifugation
The invention provides a process for preparing soybean protein isolate with heat stability. The process for preparing the soybean protein isolate with heat stability comprises the following steps thatdefatted soybean meal is taken, crushed and sieved by 80 meshes to obtain a sieving object, ethanol is added to the sieving object, and the mixture is leached for 30-60 minutes; the leached solid-liquid mixture is subjected to solid-liquid separation to obtain semi-finished soybean meal; the obtained semi-finished soybean meal is washed with water and then subjected to solid-liquid separation; obtained solid object is subjected to suction filtration to be a cake shape and dried naturally to obtain alcohol-modified soybean meal; the alcohol-modified soybean meal is crushed and then subjected to 80-mesh sieving, and the soybean protein isolate is obtained after extraction through alkali dissolution, centrifugation to obtain supernatant, acid precipitation, centrifugation to obtain curd, pHcallback, freeze-drying and crushing; modified starch is added in the obtained soybean protein isolate, and the mixture is dispersed in water and stirred at a constant temperature to obtain dispersionliquid; the pH of the obtained dispersion liquid is adjusted to 4-5, and after acid precipitation, centrifugation is carried out to collect precipitate; the obtained precipitate is dispersed in deionized water, the pH is called back to 7, after freeze-drying, crushing is carried out, and the soybean protein isolate with heat stability is obtained.
Owner:PINGDINGSHAN TIANJING PLANT ALBUMEN

Production method of fried puffed flavored fish skin

The invention discloses a production method of fried puffed flavored fish skin. The production method comprises the following steps: S1, treating raw materials; S2, performing segmentation; S3, performing pickling; putting the cut fish skin into a pickling barrel, and pickling for 20-40 minutes; S4, frying for the first time; adjusting the oil temperature of the frying and cooling integrated equipment to 125-130 DEG C, performing low-temperature frying, and performing frying for 8 min; S5, performing cooling; turning on a cold air device for cooling to the normal temperature of 20-25 DEG C; S6, performing deep-frying puffing for the second time; adjusting the oil temperature of the frying and cooling integrated equipment to 170 DEG C, and carrying out secondary frying puffing by utilizingmoisture contained in the primary frying; S7, filtering oil; S8, performing cooling; S9, performing seasoning; S10, performing drying; and S11, performing modified atmosphere packaging. The fresh fishskin or frozen fish skin is adopted as a raw material, the flavor fish skin product is prepared through the procedures of cleaning, cutting, pickling and the like, a secondary frying method and a fusion puffing technology are employed, and the obtained flavor fish skin has special taste and high quality and is long in shelf life and easy to store.
Owner:安徽灵猫食品有限公司

Mechanical structure design for independent multi-sucker climbing arm system of wall climbing robot

The invention discloses a mechanical structure of an independent multi-sucker climbing arm system of a wall climbing robot. The mechanical structure comprises four climbing arms and a robot main body,and the four climbing arms and the robot main body jointly form the climbing arm system. The four climbing arms are of the same mechanical structure, and each climbing arm is provided with a climbingarm finger structure, an independent multi-sucker system, a gas cylinder group and a climbing arm electromagnetic pneumatic reversing valve group separately. The robot main body is internally provided with a climbing arm control module, a reversing device electromagnetic pneumatic reversing valve group, a gas cylinder group control module and a central CPU single chip logic sequence control module. The mechanical structure of the climbing arm system of the wall climbing robot can be used in the field of movable wall climbing robots to provide a design approach for implementation of the wall climbing robots. The independent multi-sucker climbing arm system of the wall climbing robot has the advantages that the number of the climbing arms is large, the load capacity is excellent, the wall face adaptability is wide, the obstacle crossing capability is excellent, and the mass is relatively small, so that the feasibility of the wall climbing robot is improved in a big step.
Owner:TIANJIN POLYTECHNIC UNIV

Silicon carbide-based reverse switching transistor and preparation method thereof

The invention belongs to the technical field of pulse power devices, and discloses a silicon carbide-based reverse switching transistor and a preparation method thereof, the transistor comprises a silicon carbide N + type substrate (7), a silicon carbide P base region (1), a silicon carbide N-drift region (3) and an anode emitter region from bottom to top; the device adopts a positive bevel angleterminal; the device can conduct current through a cathode short circuit point, namely a silicon carbide cathode P + region (8). According to the invention, the structure and the preparation method ofthe SiC RSD are improved; thinning the N + type substrate; periodically disconnecting the N + cathode region; injecting P + type highly-doped ions into the disconnected part to form a cathode short-circuit point. Therefore, the effective pre-charging process of the RSD is realized, and the problems that the device is broken down in advance when a pre-charging plasma layer is established by utilizing avalanche and the effective pre-charging plasma layer is difficult to establish by utilizing avalanche breakdown due to the fact that the defects of the silicon carbide epitaxial wafer cannot be well controlled in the prior art are solved.
Owner:HUAZHONG UNIV OF SCI & TECH

A construction method for underground excavation of large-section tunnels in soft rock formations

A soft rock stratum underground excavation large-section tunnel construction method comprises the following steps of conducting excavation on the upper portion of the center of an arc part to form an arc part small pilot tunnel, and arranging an arc crown vertical supporting system in the arc part small pilot tunnel; conducting excavation to form a left upper pilot tunnel, a left middle pilot tunnel, a right upper pilot tunnel, a left lower pilot tunnel and a right lower pilot tunnel in sequence, and reserving a core rock wall in each pilot tunnel; pouring inverted arc concrete on the left side and right side and inverted arc backfill; pouring the arc part of a tunnel and a side wall secondary lining; excavating the core rock walls; pouring inverted arc concrete and inverted arc backfill. A supporting system adopted in the construction method comprises the arc part small pilot tunnel, a manual hole digging pile, the arc crown vertical supporting system, a side wall preliminary bracing and a core rock wall bracing, wherein the arc crown vertical supporting system comprises a steel pipe support penetrating through the manual hole digging pile and the arc part small pilot tunnel, and an independent foundation is arranged on the bottom of the steel pipe support and located on the bottom of the manual hole digging pile. According to the soft rock stratum underground excavation large-section tunnel construction method and the supporting system, sedimentation of the arc part of the tunnel can be effectively controlled, excavation footage is large, construction progress is accelerated, arc part secondary lining can be realized early, and construction safety is guaranteed.
Owner:RANKEN RAILWAY CONSTR GROUP

Manual motor starter

The invention relates to a manual motor starter, comprising a rotary control mechanism, an operating mechanism, a press plate and a contact system, wherein the operating mechanism comprises a rod-shaped operating crank and a four-bar mechanism, one end of the rod-shaped operating crank is connected with the control mechanism, the other end of the rod-shaped operating crank is fixedly connected with one end of the four-bar mechanism, the other end of the four-bar mechanism is connected with the press plate, the press plate rotates around a fixing shaft at one end of the press plate under the action of the operating system, the other end of the press plate is connected with the contact system and is matched with the contact system to realize a switching-on / off operation of a movable / fixed contact. The manual motor starter disclosed by the invention has the advantages of small impaction force, labor-saving operation, simple structure and small breakage on devices, avoids impaction of discontinuous contact in a hopping process, reduces the influence of an impaction force on breakage of key components when a mechanism switches on or off, and prolongs the service life of the mechanism.
Owner:SHANGHAI NOARK ELECTRIC

Electrostatic spraying device and method and working vehicle with same

The invention discloses an electrostatic spraying device and method and a working vehicle with the same. The electrostatic spraying device comprises a spraying rod body, an electrostatic generator, anextractor and at least sprayer, the extractor is mounted at one end of the spraying rod body, the sprayers are mounted at the other end of the spraying rod body to enable liquid extracted by the extractor to be sprayed to the spraying rod body and to be sprayed to the outside of the spraying rod body by the sprayers through the spraying rod body, and the electrostatic generator is communicated tothe spraying rod body to enable the liquid sprayed by the spraying rod body to carry static charge. A liquid layer is uniformly formed on the surface of a crop, and using efficiency of the liquid isimproved.
Owner:DONGFENG AGRI EQUIP XIANGYANG CO LTD

Excavation relaxation treatment method for rock mass dam foundation with multi-layered structure

ActiveCN109780950AControl excavation slackControlling the Damage Control ConundrumBlastingExcavationsDetonationDamage control
The invention provides an excavation relaxation treatment method for a rock mass dam foundation with a multi-layered structure. The excavation relaxation treatment method adopts an optimal dam foundation excavation relaxation treatment technology based on ways of structural surface pre-reinforcement, advanced consolidation grouting, energy-dispersive blasting and hole-bottom detonation. Compared with a traditional protective layer stratified excavation method, the relaxation treatment method has the advantages that excavation on 3 layers needs not to be adopted, so that the construction disturbance is reduced, the construction progress is accelerated, and the construction period is shortened; and the excavation relaxation and damage control problems of a rock mass with a multi-layered structure are effectively controlled.
Owner:CHINA THREE GORGES PROJECTS DEV CO LTD +1

Environment-friendly high-temperature-resistant and ageing-resistant thermos flask

The invention discloses an environment-friendly high-temperature-resistant and ageing-resistant thermos flask comprising a flask body, an inner container, an upper cover assembly and a heat insulation stopper, wherein the inner container is placed in the flask body; the upper cover assembly is buckled on the top end of the flask body; the heat insulation stopper is matched and connected with an opening of the inner container; the heat insulation stopper comprises a base and a sealing cover, and the sealing cover is connected with the side wall of the base in a sealing way and is made of silicon rubber; and raw materials of the silicon rubber include dimethyldiphenyl silicon rubber, methylvinylphenyl silicon rubber, allyl silicon rubber, trifluoropropyl silicon rubber, a heat-resistant additive, silica powder, hydrophobic fumed silica, zinc borate, aluminum silicate, calcium carbonate, mica powder, kaolin, a rhodium-containing inorganic compound, a titanium-containing organic complex, stearic acids, a peroxide crosslinking agent, aromatic phosphate and an age resister 2246. The environment-friendly high-temperature-resistant and ageing-resistant thermos flask is environment-friendly, high-temperature-resistant and ageing-resistant.
Owner:蚌埠市耀得保温容器有限公司
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