108results about How to "Avoid structural instability" patented technology

The invention provides a USB plug with forward and reverse insertion functions. The USB plug comprises an insulating body, two terminal groups which are respectively installed on the upper side and the lower side of the insulating body, metal buckles inserted to two transverse sides of the insulating body, metal holding members installed at the outer sides of the two terminal groups, and a metal housing arranged outside the insulating body in a sleeving manner. The insulating body comprises a butt joint head part, and a tail part which extends backwards from the butt joint head part. The butt joint head part comprises a hollow butt joint cavity and a plurality of terminal slots penetrating though the upper and down top walls of the butt joint cavity. The tail part comprises a sunken installation part. The terminal groups are vertically installed from the upper side and the lower side of the insulating body. The USB plug with the forward and reverse insertion functions can effectively solve the defect in the prior art that terminal group holding metal buckles lead to unstability.

The invention provides an apparatus and method for cooking liquid food, which comprises a heating mechanism, a pressure vessel heated by the heating mechanism, a extracting vessel having a connected pipe extending from the bottom of a receiving-filtration mechanism into the pressure vessel and arranged on an opening of the pressure vessel for sealing the opening, a disintegrator inserted into the inner of the extracting vessel. The extracting vessel is filled with food material and cooking water, then the disintegrator is turned on for smashing the food material in the cooking water left in the extracting vessel. After smashed, the food material is heated by boiled cooking water for extracting available component. Stop heating by the heating mechanism in proper time after extracting, then filtrate the extracting liquid form the extracting vessel using the filtrating mechanism, pump the extracting liquid to the pressure vessel for reclaiming employing the pressure decline, caused by heating stop, though the connected pipe.

The invention relates to the field of garbage treatment structures, in particular to a garbage lifting device which comprises a vertical guide column, a bracket, a jacking hydraulic cylinder, a guide wheel and an auxiliary discharge outlet. The bracket comprises a front unit and a rear unit, wherein the auxiliary discharge outlet is fixed to the top of the front unit, a supporting plate for holding a garbage can is arranged at the bottom of the rear unit, and a spring is arranged between the front unit and the rear unit to enable the front unit and the rear unit to relatively slide. The front unit and the rear unit relatively slide to enable the auxiliary discharge outlet and the supporting plate to clamp the garbage can. The jacking hydraulic cylinder is arranged on the vertical guide column and pushes the bracket to go up and down along the vertical guide column, and the guide wheel is further arranged between the bracket and the vertical guide column. Conveying is more stable through the overturning structure of an automatic dumping frame, and the garbage can is protected against seepage in the overturning process through elastic pressure; and the structural instability problem caused by sudden operation of transmission force is effectively prevented, the garbage spilling phenomenon caused by instable power is avoided, and work efficiency is improved.

Provided is a construction method for patrol star network of low frequency vibration structure, comprising installing wireless vibration sensor node on vibration-sensitive position in engineering structure, emitting by 2.4GHz ISM band wireless electropult, receiving signal by signal collecting and receiving device, connecting and communicating with host computer in monitoring room by external serial communication device. Vibration signal of a plurality of measuring points is wirelessly transferred to the host computer in monitoring room for data interpretation and monitoring by professional, so as to effectively avoid structural instability induced by low frequency vibration.

The invention provides an air-suspending T-shaped rail slider, relating to a rail system and providing an air-suspending T-shaped rail slider capable of effectively overcoming unstable structure problem occurred at the time of air-suspending movement and reducing friction interference in the system. The slider comprises a top panel, a left panel and a right panel, wherein the left panel and the right panel are L-shaped plates; the lower part of the left panel is partially provided with at least one air hole for blowing a guide rail base surface; the lower part of the right panel is partially provided with at least one air hole for blowing the guide rail base surface; and at least one air hole for blowing the guide rail base surface is an one-way air hole or / and an two-way air hole.

The invention relates to equipment for dismantling a tunnel lining, in particular to self-propelled tunnel lining dismantling equipment and a using method. The self-propelled tunnel lining dismantlingequipment comprises a dismantling system, a walking system, a power system and a control system. The dismantling system is used for dividing the to-be-replaced lining of a tunnel into a plurality ofdismantling units separated from a tunnel main body; the walking system is used for conveying the dismantling system to an operation area corresponding to the to-be-replaced lining of the tunnel; thepower system is used for providing power for the dismantling system and the walking system to complete actions; and the control system sends action instructions to the dismantling system, the walkingsystem and the power system. Compared with the prior art, the self-propelled tunnel lining dismantling equipment and the using method have the beneficial effects that protection, cutting and dismantling are realized during tunnel lining replacement, disturbances of lining dismantling to surrounding rock and existing linings are reduced, frequent equipment replacement is not required during construction, the construction safety is guaranteed, the operation efficiency is improved, and the organization difficulty is reduced.

The invention discloses a built-in force sensor capable of directly measuring force. The built-in force sensor comprises a first pressing sleeve, a pressure sensor component, a second pressing sleeve, a pressing head and a fixing device; a first cylindrical inner hole is formed in one end of the first pressing sleeve, the pressure sensor component is installed in the first cylindrical inner hole and comprises a stress end, a force transmission rod and a force measuring end which are connected sequentially, a second cylindrical inner hole is formed in the free end of the force measuring end, a strain gauge is arranged on the bottom face of the inner side of the force measuring end, and a third cylindrical inner hole is formed in the free end of the stress end; one end of the second pressing sleeve makes contact with the fixed end face of the force measuring end, the outer side of the other end of the second pressing sleeve is provided with a shoulder which is fixedly connected with the second pressing sleeve through a screw, and the pressure sensor component is fixed in the first pressing sleeve; the pressing head is fixed in the third cylindrical inner hole through the fixing device. According to the built-in force sensor, the core part of the sensor can be arranged in a numerical control press, the measured force is directly detected, the influences of the outside environment are reduced, and the functions of built-in installation, high precision and convenient installation are achieved.

The invention relates to a vibration and noise reduction device of a transformer. The vibration and noise reduction device comprises polyurethane buffers (1), intermediate partition plates (2), vibration reduction rubber pads (3) and C-shaped steel-channel frames (4) which are sequentially connected from bottom to top, wherein the polyurethane buffers (1) are fixedly connected with the ground, one side of an opening of each C-shaped steel-channel frame faces the vibration reduction rubber pads (3), the vibration reduction rubber pads (3) are embedded into the C-shaped steel-channel frames (4), and a transformer base is fixedly arranged on the other sides of the C-shaped steel-channel frames (4). Compared with the prior art, the vibration and noise reduction device has the advantages that dual vibration isolation modes are adopted, the mechanical vibration of the transformer is reduced, the influence of the vibration and the noise of the transformer on a surrounding environment is reduced, and meanwhile, the service lifetime of the transformer is also prolonged.

The invention relates to a molybdenum sulfide / polypyrrole / polyaniline ternary composite material as well as a preparation method and application thereof. According to the molybdenum sulfide / polypyrrole / polyaniline ternary composite material, a polypyrrole nano coating layer and polyaniline nanoparticles are grown on molybdenum sulfide nanosheets in situ. The preparation method comprises the following steps: performing ultrasonic peeling on a solution so as to obtain molybdenum sulfide nanosheets, performing ultrasonic dispersion so as to obtain a molybdenum sulfide nanosheet dispersion liquid, adding an acid solution dispersion liquid of a pyrrole monomer, performing in-situ polymerization in an ice water bath, washing, drying so as to obtain a molybdenum sulfide / polypyrrole composite material, performing ultrasonic dispersion so as to obtain a molybdenum sulfide / polypyrrole dispersion liquid, adding an acid solution dispersion liquid of aniline, performing in-situ polymerization in the ice water bath, washing, and drying, thereby obtaining the molybdenum sulfide / polypyrrole / polyaniline ternary composite material. The molybdenum sulfide / polypyrrole / polyaniline ternary composite material is simple in preparation process, easy to operate and low in reaction temperature, and can be used as an ideal electrode material of a new energy device such as a high-performance super-capacitor and a lithium ion battery.

The invention discloses a rapid pressure-bearing forming device and method for a physical similar material test piece. The device comprises a strain gauge and a horizontally arranged lower flat plate.Four guide columns are arranged on an upper surface of the lower flat plate in a rectangular array, a hydraulic jack is arranged on the lower flat plate, the four guide columns are sleeved with a middle flat plate in a sliding mode, an upper flat plate is arranged at upper ends of the four guide columns, each guide column is sleeved with a compression spring located between the upper flat plate and the middle flat plate, a test piece forming die is placed on the middle flat plate, a lower surface of the upper flat plate is connected with a pressure sensor, and the pressure sensor is connectedwith a strain gauge through a lead. The forming pressure, the forming density and the forming time of a test piece can be accurately controlled, the forming conditions of the similar material test piece are accurately controlled by controlling the size of the similar material test piece, the density uniformity of the similar material test piece is improved, and the dispersion of the shape of thetest piece is reduced. Therefore, the die has the capability of manufacturing the high-density similar material test piece.

The invention relates to the technical field of cleaning equipment, in particular to bearing cleaning and drying equipment. The bearing cleaning and drying equipment comprises a rotating cylinder, two supporting seats, a material receiving bin, a waste residue storage tank, a cleaning fluid storage tank, a clear water circulating tank, a drying device, a spraying device and a power device. The rotating cylinder is located on the two supporting seats, and the material receiving bin is arranged on the right side of the rotating cylinder. The waste residue storage tank, the cleaning fluid storage tank and the clear water circulating tank are sequentially distributed below the rotating cylinder, and the drying device used for drying is located in the right side of the rotating cylinder. The water spraying device penetrates through the interior of the rotating cylinder. The power device comprises a large friction wheel, a small friction wheel, a speed reducer, a coupler and a motor, wherein the large friction wheel is fixed to the rotating cylinder, and the power device is used for driving the rotating cylinder to rotate. The bearing cleaning and drying equipment can carry out sundry removing, cleaning and drying on bearings, the problem of an equipment fault caused by waste scrap iron mingled in the cleaning fluid can be solved, continuous work can be achieved, a large amount of labor force can be saved, and the production cost can be reduced.

The invention discloses an OFDR (Optical Frequency Domain Reflectometer)-based deep horizontal displacement and underground water level integrated monitoring and early warning system and method. The system comprises a distributed optical fiber strain sensor, a self-heating optical fiber temperature sensor, an inclinometer pipe, a hollow steel pipe, an optical fiber data acquisition instrument, a solar cell panel, an optical fiber junction box, a transformer, a narrow linewidth tunable laser, a coupler, a cloud platform, a monitoring result processing and display system and an early warning system, wherein the distributed optical fiber strain sensor is positioned in a groove of the inclinometer pipe, the hollow steel pipe is fixed to the inner side of the inclinometer pipe, and the opticalfiber temperature sensor is wound and fixed to the surface of the hollow steel pipe; the optical fiber data acquisition instrument transmits data to the monitoring result processing and display systemthrough the cloud platform, and the system compares a peak value with a set early warning value and judges whether early warning is carried out or not; and the monitoring result processing and display system is connected with the early warning system, and an indicator lamp flickers during early warning. The system is high in precision and can achieve early warning in advance so as to prevent structural instability damage caused by too large deep horizontal displacement or too large underground water level changes.

The invention provides a pattern transferring method, which comprises the following steps: providing a semiconductor substrate with a plurality of mask layers, wherein the mask layers which are furthest from the semiconductor substrate and are not etched are provided with photoresist layers, and the photoresist layers contain a photographic acidifier and alkyl phenoxy benzoic acid resin; exposing an objective pattern to the photoresist layer to form a photoresist layer with a semiconductor device pattern, wherein the depth of the semiconductor device pattern on the photoresist layer is less than the depth of the photoresist layer; performing silanization treatment on the surface of the photoresist layer with the objective pattern; forming an anti-plasma etching layer with an objective pattern shape on the photoresist layer; taking the anti-plasma etching layer on the photoresist layer as a mask; performing plasma etching on the photoresist layer until a mask layer is exposed; and taking the anti-plasma etching layer or the photoresist layer as the mask to etch the mask layer. The pattern transferring method does not need to coat an anti-reflection layer on the etched surface and avoids the unsmooth coating of the anti-reflection layer, thereby avoiding an unstable structure of pattern lines formed by the photoresist layer.

The invention discloses an anti-aging anti-static fireproof heat insulation wall. The wall comprises two laminated plates serving as outer-layer plates, and heat insulation rock wool layers arranged on the inner sides of the outer-layer plates. The outer-layer plates (101) are prepared from, by weight, 90-110 parts of polyvinyl chloride resin, 15-20 parts of ethylene propylene diene monomer, 4-6 parts of isopropyl phenyl diphenyl phosphate, 4-5 parts of acetyl tri-n-butyl citrate, 8-10 parts of magnesium hydrate, 40-50 parts of di-iso-decylphthalate, 6-8 parts of butadienyl triethoxysilane and 2-4 parts of organic chrome complex. When the wall is installed, heat insulation intensity can be determined as needed, so that the thickness of the wall can be determined as needed, and structural thickness is adjustable; meanwhile, adjustment is convenient, installation can be conducted as needed, thickness can be determined according to an installation position, and using is convenient. By matching a complex plasticizer composed of di-iso-decylphthalate, beta-diketone and ammonium polyphosphate with polyethylene resin, the positive effect of the plasticizer is maximized, mechanical property is improved, and anti-aging property and processability are improved.

The invention discloses a manufacturing method of an electrostatic suction cup. The manufacturing method comprises the step of manufacturing a body and a base of the electrostatic suction cup and the step of connecting the body and the base into a whole. According to the step of manufacturing the body of the electrostatic suction cup, a ceramic substrate embedded with a thin film electrode is formed, the upper surface of the ceramic substrate is imaged, a protection layer resistant to plasma erosion is deposited on the surface of the ceramic substrate, and the body of the electrostatic suction cup is formed. According to the manufacturing method, the plasma erosion resisting performance and the structural stability of the electrostatic suction cup can be effectively improved, and the service life of the electrostatic suction cup can be effectively prolonged.

The invention provides a curved surface display device back plate and a curved surface display device using the same. The curved surface display device back plate comprises a first plate body, a second plate body and a plurality of separation units. The first plate body comprises a first peripheral edge and the second plate body comprises a second peripheral edge. The second plate body is placed on the first plate body and the second plate body and the first plate body define an interlayer space. The first peripheral edge is connected with the second peripheral edge fixedly and the first plate body and the second plate body bend correspondingly. The separation units are distributed in the interlayer space and are connected with the first plate body and the second plate body.

The invention relates to a preparation method of an oxide porous material. According to the technical scheme, the method comprises the steps that an oxide precursor salt is dissolved in organic solvent according to the concentration ranging from 5 mol / L to 10 mol / L, stirring is conducted, and a solution I is obtained; a binder is added into the solution I according to the mass ratio of the oxide precursor salt to the binder of 1 to 0.01-0.1, stirring is conducted, and a solution II is obtained; a template agent is added into the solution II according to the mass ratio of the oxide precursor salt to the template agent of 1 to 0.1-0.35, stirring is conducted, and a solution III is obtained; liquid nitrogen freezing treatment is conducted on the solution III, drying is conducted in a vacuum freezing dryer, and a dried product is obtained; the product is put in a tube furnace, the temperature rapidly rises to 300-800 DEG C at the speed of 4-5 DEG C / min in an argon atmosphere or air atmosphere, heat preservation is conducted for 4-12 h, natural cooling is conducted along with the furnace, the template agent is removed, and the oxide porous material is obtained. The preparation method of the oxide porous material is convenient to operate and suitable for industrial production, and the hole size, the porosity and the wall thickness of the product can be regulated in a larger range.

The invention relates to a NiCo2S4@mesocarbon microbead / carbon nanotube composite material and a preparation method and an application thereof. In the composite material, the mesocarbon microbeads account for 17.5%-22.5% of the total mass of the composite material; and the carbon nanotubes account for 2.5%-7.5% of the total mass of the composite material. According to the composite material, NiCo2S4 is compounded with two carbon materials, i.e., mesocarbon microbeads and carbon nanotubes, so the critical shortages that the existing pure-phase NiCo2S4 is unstable in structure, low in conductivity and short in life cycle and the actual specific capacity of a carbon material is less than 200F / g are overcome, and the specific capacity and the cyclic charging and discharging stability of the composite material when the composite material is used for a supercapacitor are remarkably improved.

The invention discloses a novel method for preventing water inrush from the shaft wall in shaft aquifer sinking. A grouting pad (4) is constructed, and an operating platform (5) is mounted on the constructed grouting pad (4); a grouting hole (3), a water injection hole (2) and a water pumping hole (9) are obliquely, downwardly and outwardly drilled from the grouting pad (4) on the working platform(5), and the water pumping hole (9) is arranged at the upstream of a water flow field (10); water is injected into the water injection hole (2), water is pumped out of the water pumping hole (9), andgrout is then injected into the grouting hole (3). According to the invention, by water pumping and drainage, the water flow field and water pressure distribution of a to-be-grouted area are controlled, consequently, grout can be uniformly diffused into the grouted are, the phenomenon of grout runout is reduced, moreover, grouting pressure is moderately decreased, and furthermore, the grouting cost is reduced.

The invention relates to an intelligent filtering electronic control communication wind-resistant advertising board. The intelligent filtering electronic control communication wind-resistant advertising board comprises an advertising board body (1), at least one baffle (2), a wind speed detecting sensor (5), a vibration detecting sensor (8), a control module (3), a power supply (4), a remote communication module (9), two filtering circuits (10) and at least one rotating motor (6), wherein the power supply (4), the remote communication module (9), the two filtering circuits (10) and the at least one rotating motor (6) are connected with the control module (3). The surface of the advertising board body (1) is provided with at least one through hole (7). One inner side edge of each through hole (7) is movably connected with the corresponding side edge of the corresponding baffle (2) through the corresponding rotating motor (6). When each baffle (2) is located in the corresponding through hole (7), the face where the front side of the baffle (2) is located is flush with the face where the front side of the advertising board body (1) is located. The intelligent filtering electronic control communication wind-resistant advertising board can relieve impact of environment airflow on the advertising board body (1), and the service life of the advertising board body (1) is effectively guaranteed.

The invention discloses a five-axis 3D printer. The five-axis 3D printer comprises a connecting frame body, a printing body, a printing base and a driving motor. The printing body and the printing base are both connected with the connecting fame body and connected with corresponding driving motors. The connecting frame body comprises an upper frame body part and a lower frame body part. The printing body is connected to the upper frame body part, and the printing base is connected to the lower frame body part. The upper frame body part and the lower frame body part are connected through three stand columns. The printing body is connected with the three stand columns through connecting rods correspondingly and can move up and down relative to the stand columns. A horizontal rotating mechanism is further connected to the printing body. By adoption of the five-axis 3D printer, five-axis printing is achieved, and the problems that existing printing equipment is low in printing efficiency and high in time and material consumption when used for printing models of complex structures are solved; and the five-axis 3D printer is simple in structure, convenient to mount and use and high in printing flexibility, the printing efficiency of the 3D printer is greatly improved, and the printing cost is reduced.

The invention discloses a railroad bed active vibration reduction and isolation model testing device, which is composed of a homogeneous foundation, a reference working condition testing device and aplurality of comparison working condition testing devices, wherein the reference working condition testing device comprises an embankment, a rigid plate, a flexible cushion layer and a vibration excitation system, and the embankment fills on the homogeneous foundation according to a reduced scale proportion; the rigid plate is placed on the top surface of the embankment; the flexible cushion layeris laid on the central area of the top surface of the rigid plate; the vibration excitation system is placed on the flexible cushion layer; a datum point is set on the rigid plate, a plurality of test points are set on the surface of the foundation outside a reinforcing area, and each of the datum point and the test points is provided with an acceleration vibration sensor used for picking up acceleration time history data; and each comparison working condition testing device has the same structure as the reference working condition testing device, and further comprises a specified type modelpile body built in the homogeneous foundation under the embankment. The railroad bed active vibration reduction and isolation model testing device is simple in structure and good in model testing effect, and can compare and analyze the vibration reduction and isolation effects of different roadbed reinforcement measures.

The invention aims to provide a bottom shell structure. According to the bottom shell structure, assembly with an air conditioner heat exchanger assembly is realized. The bottom shell structure comprises a first windward surface, a second windward surface, multiple first reinforcing ribs and multiple second reinforcing ribs; the first windward surface is used for converging or stopping wind; the second windward surface is intersected with the first windward surface; the multiple first reinforcing ribs are arranged along the longitudinal direction, the root of the second windward surface is connected to the second windward surface, and the whole first reinforcing ribs are arranged on the second windward surface in an inclined mode; and the multiple second reinforcing ribs are distributed ona bending part between the first windward surface and the second windward surface, and the whole second reinforcing ribs are in contact connection with the first reinforcing ribs, the first windwardsurface and the second windward surface in the cross section direction. According to the bottom shell structure, the first reinforcing ribs and the second reinforcing ribs are coordinated for use, sothat the bending strength of the bending part of the bottom shell of the air conditioner is enhanced, meanwhile, the air inlet path is changed, and the surge noise generated by the bottom shell of theair conditioner is reduced. The invention further provides an air conditioner which is provided with the bottom shell structure.

The invention discloses a prefabricated UHPC slope anchor plate device and a mounting method thereof. The anchor plate device is fixed to an anchor cable penetrating through a slope in a matched modeand is used for assisting in fixing the slope; the device comprises N anchor plates which are sequentially arranged in an overlapped mode, where N is larger than 1; first mounting through holes are formed in the centers of the N anchor plates; the centers of the first mounting through holes in the N anchor plates are located on the same virtual axis; the anchor plate located on the lowermost layeris used for being attached to the surface of the slope; the tail end of the anchor cable sequentially penetrates through the first mounting through holes in the N anchor plates and is fixedly connected with the anchor plate located on the uppermost layer through an anchor pie; the N anchor plates are restrained and fixed to the slope; the N anchor plates are gradually decreased in area of sectionin sequence along the direction away from the slope; and the perpendicular projection of the anchor plate on the uppermost layer on the slope is within the range of the perpendicular projection of the anchor plates on the lower layers on the slope. According to the scheme, mounting is efficient, manpower is saved, implementation is flexible, and the prestress applying procedure can be conducted immediately after installation is completed.

The invention discloses a three-dimensional recycled paper pulp molded product material which is characterized by being prepared from the following components in parts by weight: 60-90 parts of regenerated plant paper pulp (based on dry fibers), 5-10 parts of acrylic emulsion (with the solid content of 50%), 0.1-0.5 parts of a soap deinking agent, 0.01-0.03 parts of a volatile agent, 2-4 parts ofrosin size, 0.1-1 part of a dispersing agent, 0.1-0.3 parts of pigment, 0.5-1 part of waterborne ceramic coating and 10-20 parts of water. The invention further discloses a preparation method of the three-dimensional recycled paper pulp molded product. The formula and the preparation method of the material are matched with each other. The preparation process is simplified, and the comprehensive performance of the material and the product is greatly improved. Ink and adhesive tape plastic doped in paper pulp can be removed, and later coloring of paper and plastic is facilitated. The situation that the structure of the paper and plastic is unstable due to the fact that broken paper pulp of the plastic is separated is avoided. The surface of the paper and plastic is sprayed with waterborne ceramic coating after the paper and plastic are manufactured, a paper and plastic product is not prone to deformation and damage, and the service life of the paper and plastic product is prolonged.

The invention discloses a concrete filled steel tubular structure based on deformation and energy absorption principles and having a multi-disaster combined protection function. The structure comprises a steel tube and a protecting cover arranged on the periphery of the steel tube in a sleeving manner, wherein a concrete column is poured in an inner cavity of the steel tube; a cavity for accommodating air is defined by the outer wall of the steel tube and the inner wall of the protecting cover, and an air grille fixedly connected with the outer wall of the steel tube and the inner wall of theprotecting cover is arranged in the cavity and comprises a plurality of corrugated plate assemblies around the periphery of the steel tube. The air grille is arranged in the cavity formed by the steeltube and the protecting cover and filled with air, thereby achieving certain thermal-insulating and fireproof effects, furthermore, the air grille can produce obvious plastic deformation under the impact action and absorbs impact energy, and the internal layer structure is prevented from directly bearing impact and being damaged.

The invention relates to an intelligent electronic-controlling communicating advertisement board capable of resisting wind. The advertisement board comprises an advertisement board body (1), at least one baffle (2), a control module (3), a power supply (4), a wind speed detecting device (5), a vibration detecting sensor (8), a remote communicating module (9) and at least one rotating motor (6), wherein the power supply (4), the wind speed detecting device (5), the vibration detecting sensor (8), the remote communicating module (9) and the rotating motors (6) are connected with the control module (3). The wind speed detecting device (5) is arranged outside the advertisement board body (1). At least one through hole (7) is formed in the surface of the advertisement board body (1). One inner side edges of all the through holes (7) are movably connected with the corresponding side edges of the corresponding baffles (2) through the corresponding rotating motors (6) respectively. When the baffles (2) are located in the corresponding through holes (7), the plane where the front faces of the baffles (2) are located is flush with the plane where the front face of the advertisement board body (1) is located. The advertisement board can relieve impact on the advertisement board body (1) from environment airflow, and the service life of the advertisement board body (1) is effectively ensured.

The invention belongs to the technical field of computer vision and in particular relates to a human face three-dimensional reconstruction system and an application method thereof. The system comprises a tank body and a three-dimensional reconstruction computer, wherein a guide rod is vertically fixed on the bottom surface of the inner side of the tank body; a first linear motor is mounted on theguide rod; an arc-shaped guide track is horizontally arranged on one side of the first linear motor; a second linear motor is mounted in the arc-shaped guide track; an arc-shaped rod is horizontally arranged on a second linear motor; a plurality of cameras are uniformly distributed on the arc-shaped rod; signal output ends of the cameras are connected with the three-dimensional reconstruction computer through data wires. The human face three-dimensional reconstruction system has the beneficial effects that a photo taking time is shortened, and a good face reconstruction effect is achieved; a human face at different angles can be imaged by the plurality of the cameras for multiple times, a great number of cameras which are arranged around a human face to take images of the whole human faceat one time are replaced, and the excessive cost is reduced; due to adoption of a three-dimensional model, real and meticulous images can be taken; due to adoption of the three-dimensional reconstruction computer, automatic imaging, data transmission and processing can be achieved, the rapid and convenient operation is achieved, and the working efficiency can be improved.

The invention belongs to the field of coke oven maintenance, and in particular relates to a method for replacing bottom bricks of a coke oven carbonization chamber. The method comprises the followingsteps: setting a carbonization chamber adjacent to a coke oven carbonization chamber to be maintained as a buffer furnace, wherein the buffer furnace is used for heat preservation of the coke oven carbonization chamber to be maintained; controlling coke oven machine side standard temperature not lower than 1200DEG C and coke oven machine coke side standard temperature not lower than 1250 DEG C; removing old bricks from the coke oven carbonization chamber to be maintained from the machine side first then the coke side; cleaning the bottom of the coke oven carbonization chamber to be maintainedwith the old bricks removed; paving the coke oven carbonization chamber to be maintained with the bottom cleaned with new bricks, banking up, heating, performing heat preservation for 2 to 3 hours, and finally loading coal to complete the replacement of the bottom bricks of the coke oven carbonization chamber. According to the invention, as the buffer furnace is arranged, and banking up and heating of the furnace are controlled, so that the coke oven machine side standard temperature is controlled not lower than 1200DEG C, and the coke oven machine coke side standard temperature is controllednot lower than 1250 DEG C. When in replacing of the bottom bricks of the coke oven carbonization chamber, the temperature in the carbonization chamber does not obviously drop, and the bottom bricks ofthe coke oven carbonization chamber can be replaced without stopping production of the whole coke oven.

The invention discloses a nano porous oxide electrode material for a lithium ion battery. The nano porous oxide electrode material comprises a C-frame reinforced nano porous SnO2 composite material. The preparation method of the nano porous oxide electrode material specifically comprises the following steps: (1) mixing ethanediol, alcohol and methanol, and adding stannous salt to prepare a stannous salt precursor solution; (2) adding oxalic acid to the stannous salt precursor solution, and stirring and mixing uniformly to obtain a stannous oxalate precursor; (3) calcining the stannous oxalate precursor in air to obtain a nano porous SnO2 material;(4) mixing the nano porous SnO2 material with a glucose solution, and reacting for 3-6 hours under 45-85 DEG C water bath conditions to obtain a C-frame reinforced nano porous SnO2 precursor; (5) calcining the C-frame reinforced nano porous SnO2 precursor under a protective atmosphere to obtain the C-frame reinforced nano porous SnO2 composite material. The prepared nano porous oxide electrode material is applied to power lithium ion batteries, and nano porous oxide and a composite material thereof for energy-storage lithium ion batteries. The nano porous oxide electrode material has the characteristics of high specific capacity, good cyclic stability and excellent rate capability.