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240results about How to "Few links" patented technology

Parallel robot

A parallel robot or parallel kinematics mechanism is provided for uses such as robotics or machining. The mechanism comprises a fixed base, a main arm, and a first and second support arm to position and orient an object in a cylindrical space with at least three degrees of freedom and retained inclination. The main arm includes an end component for supporting the object and linkage means to retain the inclination of the end component with respect to the base for all positions and orientations of the end component. The mechanism advantageously provides a large cylindrical workspace and a small footprint and is capable of moving an object at high accelerations and speeds. The mechanism can be equipped with an additional motor to orient an object, thereby providing the mobility of a SCARA robot. Alternatively, it can be equipped with passive transmission means that allow for an object to be displaced in parallel to itself.
Owner:MERZ PHARMA GMBH & CO KGAA +1

Parallel robot

A parallel robot or parallel kinematics mechanism is provided for uses such as robotics or machining. The mechanism comprises a fixed base, a main arm, and a first and second support arm to position and orient an object in a cylindrical space with at least three degrees of freedom and retained inclination. The main arm includes an end component for supporting the object and linkage means to retain the inclination of the end component with respect to the base for all positions and orientations of the end component. The mechanism advantageously provides a large cylindrical workspace and a small footprint and is capable of moving an object at high accelerations and speeds. The mechanism can be equipped with an additional motor to orient an object, thereby providing the mobility of a SCARA robot. Alternatively, it can be equipped with passive transmission means that allow for an object to be displaced in parallel to itself.
Owner:MERZ PHARMA GMBH & CO KGAA +1

Soft base station system based on fiber optic stretch and synchronous method thereof

The invention discloses a soft base station system and process of synchronizing based on optical fiber zooming out. Presently, direct sending stations are used to expand the signal coverage in the mobile communication network, but noise level and low sensitivity are also brought in. The soft base station system based on optical fiber will transform the radio frequency signal directly coupled from the large capacity base station into optical signal through analog optical modulation, which will be transmitted to the soft base station via. the optical fiber, the soft base station will transform the optical signal into the electrical signal, which will radiate to the needed coverage via the service antenna. Apart from all the advantages resulted from using digital transmission and receiving machine, the soft base station has bee proved to increase system capacity, improve the network quality and reduce the occurrence of disconnection.
Owner:HUAWEI TECH CO LTD

Modularized box type charging and battery swapping station

The invention provides a modularized box type charging and battery swapping station used for replacing a battery of an electric car. The charging and battery swapping station comprises a central monitoring room 1, a battery swapping robot 2 and a charging and battery swapping box 3, wherein the central monitoring room 1 is used for monitoring the charging and battery swapping station, the battery swapping robot 2 is located between the charging and battery swapping circuit 3 and the electric cars provided with batteries to be replaced, and the battery between the electric cars provided with batteries to be replaced can be replaced; and a battery storage rack 301, a battery charger cabinet 302, a monitoring cabinet 303, a distribution cabinet 304, a temperature control system 305 and an access path 306 are arranged in the charging and battery swapping box 3. The modularized box type charging and battery swapping station, provided by the invention, has the advantages of strong adaptability, flexible configuration and expansibility, small floor space, high working efficiency, short construction period, benefit for large-scale popularization and construction, high automation degree, smaller device maintenance amount, simple structure and low fault rate.
Owner:BEIJING STATE GRID PURUI EXTRA HIGH VOLTAGE POWER TRANSMISSION TECH CO LTD +1

Gravity-flotation joint separation technology for coking middlings

ActiveCN103831164ALess equipment linksSimple processWet separationPhysicsGrinding
The invention relates to a gravity-flotation joint separation technology for coking middlings and belongs to the technical field of mineral processing. The technology comprises the steps of crushing the coking middlings, water medium whirlcone gravity concentration, and ore grinding-floatation of gravity concentration middle products. The technology is characterized in that the water medium whirlcone is adopted for gravity concentration, so that equipment is few in link and simple in technology; no heavy media need consuming, so that operation cost is low; head pulling or tail throwing is adopted for gravity concentration, so that subsequent ore grinding materials are made to be reduced in number, and energy consumption is saved.
Owner:TAIYUAN UNIV OF TECH

Entrance guard and air conditioner linkage system and control method thereof

The invention discloses an entrance guard and air conditioner linkage system for realizing linkage control of entrance guard equipment and an air conditioner. The entrance guard and air conditioner linkage system comprises an identity information acquisition device, an identity information recognition device and a control device, wherein the identity information acquisition device is used for acquiring the information of a user wanting to enter a room through the entrance guard equipment; the identity information recognition device is used for recognizing the identity of the information of the user to obtain the identify information of the user; and the control device is used for judging whether the air conditioner is controlled to operate according to an air conditioner operating parameter corresponding to the identify information on the basis of the identify information. The invention also discloses a control method of the entrance guard and air conditioner linkage system. According to the entrance guard and air conditioner linkage system, the air conditioner can work individually and regularly, so that the link of operating a remote controller is omitted, and the intelligent level and comfort level for applying the air conditioner are improved.
Owner:GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1

Microcomputer controlled standby electric power automatic throwing method with inner bridge wire enlarged

The invention belongs to the control technology of the electric network for power transmission and distribution and relates to a method for the automatic use of the micro-computer controlled standby power supply of an expanded inter-bridge connection. The applied expanded inter-bridge connection comprises two power supplies; the inlet wires of the two power supplies are respectively connected with a circuit breaker DL1 and a circuit breaker DL4; a circuit breaker DL3 and the circuit breaker DL4 are connected between the inlet wires of the two power supplies so as to be taken as a bridge circuit breaker; the circuit breaker DL1, the circuit breaker DL2 and the circuit breaker DL4 are taken as three circuit breakers in a normal inter-bridge connection; the method for the automatic use of the micro-computer controlled standby power supply is used for controlling the three circuit breakers; simultaneously, the circuit breaker DL1, the circuit breaker DL3 and the circuit breaker DL4 are also taken as three circuit breakers in a normal inter-bridge connection; the method for the automatic use of the micro-computer controlled standby power supply is also used for controlling the three circuit breakers; furthermore, the two control processes are carried out at the same time. The method has simple action principle and high reliability and completely meets the basic principle of the automatic use of the standby power supply.
Owner:STATE GRID JIANGSU ELECTRIC POWER CO ZHENJIANG POWER SUPPLY CO

Method and device for measuring speed and acceleration of shot

The invention relates to a method and a device for measuring speed and acceleration of a shot. The device is characterized by comprising three pairs of light transmitters and light receivers, three photovoltaic conversion amplification circuits and a data processor. The three pairs of light transmitters and light receivers are arranged on two sides of a shot running track, a certain distance is reserved between each pair of light transmitter and light receiver, each light receiver is connected with one photovoltaic conversion amplification circuit, and the three photovoltaic conversion amplification circuits are connected with the data processor. Transmitting terminals of the light transmitters are aligned with the shot running track and are parallelly opposite to the light receivers, and a light path and the shot running track form a right angle. According to the method and the device for measuring the speed and the acceleration of the shot, the speed and the acceleration of the shot can be measured, and due to the fact that the input quantity is the switching value, a measuring system is high in anti-interference and stability.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Method for ultrasonic image reinforcement and noise suppression

The invention discloses a method and a system for improving the quality of images, the method and the system comprise a denoise segment, a smoothing segment, a sharpening segment and a syncretizing segment, wherein the denoise segment is used for eliminating lumen noises in original images, the smoothing segment is used for eliminating spot noises in the images output by the denoise segment, the sharpening segment is used for increasing details and characteristics in the images output by the smoothing segment, the syncretizing segment is used for syncretizing the images output by the denoise segment, the smoothing segment and the sharpening segment. The images output by the syncretizing segment can be sent to a display device for displaying after the processing of an image processing module and other sub-modules.
Owner:SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD

Self-adaptive tape winding device and packing method based on same

The invention discloses a self-adaptive tape winding device and a packing method based on the same. The winding device comprises a rack body, clamping plates, an object bearing table, a tape rack, a cutter mechanism and a control mechanism, wherein a first screw rod is pivoted to an upper end of the rack body; a first servo motor is connected to one end of the first screw rod; the first servo motor drives the first screw rod to rotate; thread structures in forward and reverse directions are formed in the first screw rod; two connection plates are connected to the first screw rod through threads; the first screw rod drives the two connection plates to move forwardly or reversely during a rotation process; the packing method comprises the steps that step 1, preparation for a packing processis finished; step 2, a tape is pulled out from the tape rack; step 3, a to-be-packed paper carton is placed on the object bearing table; step 4, the tape on the tape rack is wound for multiple turns around a sealing opening of the packing paper carton; step 5, the cutter is driven by a stirring sheet to cut off the tape; and step 6, the packing paper carton which is packed is taken off. The self-adaptive tape winding device has the beneficial effects that universality is high; manufacturing cost is low; and production is easy.
Owner:JILIN UNIV

Sensing network node and information transmitting method thereof

The invention relates to the filed of wireless communication, and discloses a sensing network node and an information transmitting method thereof. The sensing network node is simultaneously provided with a sensing network transceiving unit and a cellular network transceiving unit, so that a locally self-organized sensing network has the capacity of transmitting valuable information to remote equipment in a low cost mode. The sensing network transceiving unit and the cellular network transceiving unit are achieved by the same wireless transceiver physically so as to save cost. An authorized frequency band is used between sensing network nodes in a cognitive radio mode to fully utilize wireless resources. A non-authorized frequency band is used between the sensing network nodes for communication to radically avoid interference between a sensing network and a cellular network using the authorized frequency band. The non-authorized frequency band used between the sensing network nodes andthe authorized frequency band used by the cellular network can be adjacent.
Owner:SPREADTRUM COMM (SHANGHAI) CO LTD

Individualized biomimetic dental implant and manufacture method thereof

InactiveCN106037965ALow elastic modulusImprove biomechanical compatibilityDental implants3d printCell adhesion
The invention relates to an individualized biomimetic dental implant and a manufacture method thereof. The invention is characterized in that the dental implant comprises an implant body for imitating the original tooth root tissue structure of a patient's missing tooth and also comprises a biomimetic artificial alveolar bone structure outer-layer for imitating a patient's alveolar bone tissue structure. The biomimetic artificial alveolar bone structure outer-layer and the external surface of the implant body are combined as a whole. The biomimetic tooth root implant body's outer layer is a 3D printed biomimetic artificial alveolar bone structure outer-layer which is combined with the implant body to form a whole structure, and is similar to the tissue structures of missing tooth's original tooth root and alveolar bone. Thus, the invention provides an ideal implementation scheme of a biomimetic artificial tooth root structure. What is the most important is that the invention provides a structure which is beneficial to bone marrow stem cell and osteogenesis-related cell adhesion, proliferation and mineralization and gives play to final osteogenic function and has good bioactivity. Therefore, a microenvironment for promoting osteogenesis is created, osteocyte generation is induced, and early rapid and firm synosteosis is realized.
Owner:STOMATOLOGICAL HOSPITAL TIANJIN MEDICAL UNIV

Measuring method and device for projectile chamber volume

The invention discloses a method and a device for measuring a bomb chamber volume. The method comprises the following steps of: manufacturing a measuring fixture by using an elastic thin-film material; putting the measuring fixture into a bomb inner cavity of the bomb chamber to be measured, fixing the bomb to be measured, and correspondingly connecting the measuring fixture with a liquid addition pipeline, connecting the liquid addition pipeline with a liquid accommodating container and connecting the liquid accommodating container with a pressure cylinder; starting the pressure cylinder, injecting liquid into the fixture by means of thrust of the pressure cylinder so as to tightly contact the elastic thin-film material of the measuring fixture with the bomb inner cavity, and calculatingthe volume of liquid which is added into the measuring fixture; and adding the volume of the measuring fixture and the volume of the liquid added into the measuring fixture to obtain the bomb chambervolume. The measuring method and the measuring device have high measurement accuracy; the degree of automation is high, and higher measurement accuracy is achieved; the measuring efficiency is high; the measuring equipment has simple structure and low cost; and the technology breaks through the tradition.
Owner:CHONGQING UNIV OF TECH

Realizing method for internet of things based on trusted operation order remote-control self-control device

The invention discloses a realizing method for internet of things based on a trusted operation order remote-control self-control device. The realizing method comprises the following steps: embedding an SD card into a remote self-control device, inserting an encryption card into a server at an operation order control center end of the internet of things, respectively establishing an encryption system at an internet of things operation order control center end and each remote self-control device end by adopting a symmetric cryptographic algorithm, forming a three-dimensional matrix through a secret key seed to establish a combined secret key generating algorithm, generating a symmetric secret key in real time, changing once at a time, encrypting the operation order into a ciphertext through the internet of things operation order control center end encryption system, sending to the remote self-control device end, after performing decryption and integrity verification on the received operation order ciphertext through the remote self-control device encryption system, determining whether to perform relevant operation of the operation order, thereby realizing trusted remote control of the internet of things operation order control center to the remote self-control device.
Owner:北京市科学技术情报研究所

Test device and method for simulating field electric energy measurement

The present invention provides a test device and method for simulating field electric energy measurement.The device for simulating field electric energy measurement is a novel simulating device designed according to the state electric energy meter field standard and DL / T448-2000, includes a real load portion and a virtual load portion in principle.The real load portion is composed of current voltage transformer, second wiring thereof, and electric energy meter, is a single bus double loop, can simulate various real wirings in the field, thus ensuring the accuracy and reliability of the electric energy measurement, and avoiding bringing hidden trouble to the safe operation of the power system.The virtual load is composed of three-phase program control test power supply and voltage, and current wiring switch box, has the characteristics of stability, strong function, easy use and the like, can be used by power supply department, metering department, school and training center for explaining practical phenomena such as false wiring of three-phase three-wire, three-phase four-wire active and reactive electric power meters to students, making the teaching closer to the practical work.
Owner:HEILONGJIANG ELECTRIC POWER RES INST +2

Method and system for opening door by scanning code, smart cabinet and terminal

The invention provides a method and system for opening a door by scanning a code, a smart cabinet and a terminal. The method for opening the door by scanning the code is used for the smart cabinet andcomprises the steps of S102, detecting the type of the two-dimensional code or the barcode scanned by a scanner and a cabinet number corresponding to the code; S104, judging whether or not the two-dimensional code or the barcode belongs to item storage codes in type, and if yes, executing S106; S106, sending out a door opening signal to open the cabinet door corresponding to the cabinet number, and executing S108; S108, judging whether or not the cabinet door is opened, if yes, executing S110, and if not, executing S112; S110, uploading item storage information to a server so that the servercan push the item storage information to the user terminal; S112, uploading fault information to the server, redistributing the cabinet door, and executing S108. By means of the method for opening thedoor by scanning the code, the scanner is applied to multiple links, and the hardware utilization efficiency and the user experience are improved.
Owner:PEKING UNIV FOUNDER GRP CO LTD +1

Method for manufacturing matrix by adoption of 3D printing technology

The invention provides a method for manufacturing a matrix by the adoption of a 3D printing technology. The method comprises the steps that a sample and a sample image are selected according to needs; the selected sample image is designed and remade through manual drawing, and a redesigned sample image is obtained; the redesigned sample image is subjected to three-dimensional forming treatment, and a three-dimensional digital model of the sample is obtained; and the three-dimensional digital model of the sample is guided into a 3D printer, the machine is edited for printing treatment, and a printed matrix is formed. The method provides a novel rapid lacquer matrix manufacturing mode, the defect occurring when a traditional matrix is manufactured is overcome, and as the photosensitive resin 3D printed matrix and paper matrix completeness is high and the surface is smooth, financial resource, material and labor consumption caused by matrix manufacturing in the earlier stage is greatly reduced and the technique processes are reduced. The matrix can be obtained only by slight polishing, priming and lacquer coating. Time and labor are saved, and more crafts and techniques can be tried.
Owner:BEIJING ZHONGHONG SHENGJING LANDSCAPE DESIGN CO LTD

Ultra-high pressure cell crusher

The invention discloses an ultra-high pressure cell crusher which comprises a case, wherein the case is internally provided with a circulation water bath tank and an accommodating chamber, wherein a pressurization and homogenization integrated device is mounted inside the circulation water bath tank; the pressurization and homogenization integrated device consists of a long oil cylinder, a main connecting sleeve, a high pressure cylinder homogenization main body, a secondary connecting sleeve and a short oil cylinder which are mounted in sequence on a same axis; a straight line type hydraulic station consisting of an oil tank, a hydraulic integrated block, an oil pump and a motor which are connected in sequence on a same axis is mounted inside the accommodating chamber; the axis of the straight line type hydraulic station is parallel to that of the pressurization and homogenization integrated device. The ultra-high voltage cell crusher disclosed by the invention is compact in structure and small in size, a small space is occupied, a small amount of connecting tubes are used, and due to a small amount of procedures, liquids are not easy to leak off.
Owner:GUANGZHOU JUNENG BIOLOGY & TECH

Method and device for preparing powder for selective laser melting by recovering waste aluminum and product

The invention belongs to the technical field of waste aluminum reusing, and particularly relates to a method and device for preparing powder for selective laser melting by recovering waste aluminum and a product. According to the method, the device and the product, waste aluminum recovering remelting technology and gas atomization powdering technology can be combined into a whole, the waste aluminum is directly prepared into the powder for laser selective melting, moreover, salt mixture components are added in the melting process so that the final powder can be uniform in microstructure, the crystal grains can be refined, and the product quality can be improved.
Owner:ZHONGBEI UNIV

Universal post processing method for multi-axis numerical control machine tool

The invention discloses a universal post processing method for a multi-axis numerical control machine tool. The universal post processing method comprises the following steps: (1) establishing a machine tool motion transformation chain according to the structure of the machine tool; (2) establishing a transformation matrix QWT from a cutter to a workpiece according to the machine tool motion transformation chain established in the step (1); (3) inputting motion coordinates Delta 1 for all translation shafts of the machine tool at an initial cutter position CL1; (4) calculating motion coordinates Delta i+1 for all the translation shafts at any follow-up cutter position CL i+1 of the initial cutter position CL1; and (5) judging whether the value of i is smaller than n, if yes, returning to the step (4.1) and continuing calculation after the value of i is added to 1, and if not, ending the calculation and outputting the motion coordinates of the translation shafts of the machine tool andthe motion coordinates of the rotating shafts of the machine tool which correspond to all the cutter positions. The universal post processing method for the multi-axis numerical control machine tool overcomes the defect that manual deduction is required in a computation formula for the motion coordinates of all the shafts in the machine tool in the general post processing method, can meet the post processing requirements of various multi-axis numerical control machines and has the advantages of high solving speed and high solving precision.
Owner:HUAZHONG UNIV OF SCI & TECH

Method and system for locally realizing automatic address allocation of RS485 slave equipment

The invention discloses a method and a system for locally realizing automatic address allocation of RS485 slave equipment. The method comprises the following steps that: host equipment selects one setof slave equipment to issue an address allocation instruction to the slave equipment; the slave equipment acquires the random number, waits for an interval, and returns the random number, the local number and the group number to which the slave equipment belongs; and the host equipment checks the random number and the local number, determines a group address and a local address after the random number and the local number are correct, and sends the group address and the local address to the slave equipment, and if the group address and the local address are correct, the next slave equipment of the to-be-processed group repeatedly executes the above steps until all slave equipment in the group are successfully allocated, and the next group is changed to repeatedly execute the above steps.The method is easy to operate and implement, the specific method process can be modified and cut according to the actual situation, localization can be truly achieved, background remote record checking is not needed, and on-site personnel debugging and background technician participation are reduced.
Owner:HAIFENG NAVIGATION TECH

Multifunctional numerical-control spherical optical element milling and grinding tool

The invention discloses a multifunctional numerical-control spherical optical element milling and grinding tool. The multifunctional numerical-control spherical optical element milling and grinding tool comprises a clamp main body and a connector. The clamp main body comprises a body, an inward-concave spherical surface formed on the upper portion of the body, an annular platform formed on the periphery of the inward-concave spherical surface, and an outward-convex spherical surface formed on the periphery of the annular platform. The radius of the inward-concave spherical surface is consistent with that of a convex surface of an optical element to be machined, and the inward-concave spherical surface is used for supporting and placing the convex surface of the optical element to be machined. The width of the annular platform is not smaller than 4 mm, and the annular platform is used for supporting and placing a plane of the optical element to be machined. The radius of the outward-convex spherical surface is consistent with that of a concave surface of the optical element to be machined, and the outward-convex spherical surface is used for supporting and placing a concave surface of the optical element to be machined. The connector is connected with the bottom of the clamp main body in a matched mode and used for being connected with machine tool equipment for machining the optical element in a matched and positioned mode. According to the multifunctional numerical-control spherical optical element milling and grinding tool, through one tool clamp, the inner surface and the outer surface of the element can be machined, the number of tool adjustment links is reduced, and the machining efficiency is improved; the multifunctional numerical-control spherical optical element milling and grinding tool is suitable for small-batch and multi-variety machining in the development process.
Owner:TIANJIN JINHANG INST OF TECH PHYSICS

Full-automatic thermosetting wire winding machine

The invention relates to a full-automatic thermosetting wire winding machine which comprises a machine frame, a wire distributing mechanism, a wire winding mechanism, a hot air mechanism and an automatic control mechanism. The wire distributing mechanism, the wire winding mechanism, the hot air mechanism and the automatic control mechanism are arranged on the machine frame. The wire distributing mechanism comprises a wire distributing motor, a screw rod and a wire distributing seat. The wire distributing motor drives the wire distributing seat to move in a reciprocating mode in the wire distributing direction through the screw rod. The wire winding mechanism comprises a wire winding motor, a main shaft and a wire winding mold. The wire winding mold is arranged on the main shaft, the wire winding motor drives the main shaft and the wire winding mold on the main shaft to rotate. The hot air mechanism is a drying gun arranged below the wire winding mold, and the drying gun is used for heating the wire winding mold and varnished wires. The automatic control mechanism comprises a PLC and a human-machine operation interface connected with the PLC. The PLC controls the wire distributing motor, the wire winding motor and the drying gun to operate. Compared with the prior art, the full-automatic thermosetting wire winding machine has the advantages of being simple in structure, accurate in control, orderly in wire winding, high in production efficiency, capable of saving materials and labor, and the like.
Owner:上海华银电器有限公司

Walling method and walling device

The invention discloses a walling method and a walling device. The walling method includes the steps of respectively arranging formworks on the two sides of a wall to be poured, and installing supports outside the formworks, wherein the heights of the formworks are smaller than the height of the wall to be poured, and the widths of the formworks are equal to the width of the wall to be poured; pouring the position between the formworks on the two sides with a certain number of grout-type wall materials, then stopping pouring, after a certain period of time, lifting the formworks on the two sides to be at certain heights, pouring the position between the formworks on the two sides with a certain number of grout-type wall materials again, then stopping pouring, and repeating lifting and pouring till the whole wall is completely built; or pouring the position between the formworks on the two sides with the grout-type wall materials, and after a certain period of time, starting to continuously lift the formworks and synchronously and continuously pour the position between the formworks with the grout-type wall materials till the whole wall is completely built; after the whole wall is solidified, disassembling the formworks and the supports. The walling device comprises a formwork unit and a pouring unit. The walling method and the walling device are high in walling efficiency, good in quality and free of formwork-moving grout-leakage phenomena.
Owner:赵路航

Steam-curing-free corrosion-resistant concrete pole and preparation method thereof

The invention belongs to the field of construction materials and relates to a concrete pole and a preparation method thereof. The concrete pole comprises a pole steel reinforcement framework, concretefor filling and wrapping the steel reinforcement framework and a waterproof coating. The surface of the steel reinforcement framework is coated with corrosion-resistant layers in uniform distribution. The concrete pole is prepared by steps of steel reinforcement framework preparation, concrete preparation, concrete pole preparation and concrete pole surface corrosion-resistant treatment. Performances of the obtained concrete pole meet requirements of GB / T 4623-2014, production cost is sharply reduced on the basis that formwork transfer efficiency and performances of the concrete pole are guaranteed and improved, the national requirements on energy saving, emission reduction and environmental protection are met, and high economic benefits and social benefits are achieved.
Owner:UNIV OF JINAN +1

Mobile phone off-line authentication method

ActiveCN104753918APrevent offline authenticationFew linksTransmissionSecurity arrangementCiphertextKey generation
The invention discloses a mobile phone off-line authentication method. A SD card is inserted in the mobile phone of the user, symmetric cryptographic algorithm is adopted for establishing encryption system and combined symmetric key generation algorithm is adopted for real time generating symmetric key, change is generated at every time for real time updating and effectively managing the key; in each user mobile phone, key seed corresponding to friend circle user is beforehand encrypted into the ciphertext and stored for ensuring storage safety of key seed of the friend circle user, and user identity information center is established on network, the key seeds of all users are encrypted into the ciphertext and stored in the user identity information center for ensuring the storage safety of key seeds of all users, and the safety downloading of the key seeds of friend circle users of mobile phone end is also ensured, thus the off-line authentication between the mobile phone and the user can be realized.
Owner:胡祥义

Corrugated steel web reinforced concrete tunnel and underground structural unit

The invention relates to a steel web reinforced concrete structure, and discloses a corrugated steel web reinforced concrete tunnel and an underground structural unit applied to various traffic tunnels and underground reinforced concrete structures, comprising a reinforced concrete base and corrugated steel web camber units arranged on the reinforced concrete base, wherein each corrugated steel web camber unit is of an arch shape, and consists of one or two circular arc corrugated steel webs, adjacent corrugated steel web beam units are connected through a water-proof connection device, a steel plate is connected with one end of the corrugated steel web that is connected with the reinforced concrete base, and is welded with fastening screws. In the invention, the structural unit only adopts one or two corrugated steel webs which are connected through the effective water-proof connection device, facilitates installation, reduces construction amount, and increases the structural intensity and water-proof performance of arc tunnels.
Owner:ZHEJIANG CTB WAVEFORM STEEL WEB

Detoxification method of chromium-containing slag entering metallurgical blast furnace by using coal spraying process form

The invention provides a detoxification method of chromium-containing slag entering metallurgical blast furnace by using coal spraying process form. The method comprises the following steps: first drying and grinding the chromium-containing slag, then uniformly blending chromium-containing slag in an amount of 1 to 15 percent of the weight of coal powder into the coal powder, spraying the coal powder blended with the chromium-containing slag into a blast furnace cylinder from a blast furnace coal-spraying system, detoxifying the hexavalent chromium in the chromium-containing slag at the high temperature of the blast furnace under the reducing atmosphere, reducing the hexavalent chromium into trivalent chromium, and finally reducing the trivalent chromium into a chromium metal, wherein 92 to 98 percent of the chromium metal is melted into molten iron and 2 to 8 percent of the chromium metal enters the furnace slag; and meanwhile, reducing the iron oxide in the chromium-containing slag into iron metal for entering the molten iron. By utilizing the sealed blast furnace coal-spraying system to directly spray the chromium-containing slag into the blast furnace cylinder, the method has the advantages of few links, no pollution, thorough detoxification due to direct and full utilization of the high-temperature reducing atmosphere, full recycling and lowest cost compared with that of the conventional methods for treating chromium-containing slag.
Owner:CHONGQING ANGRUIYUE SCI & TECH

Slant-plate flow sensor

A slant-plate flow sensor is composed of shell, measuring tube fixed in the shell and with hollow space as measuring channel, measuring plate in the measuring tube linked to the lower end of measuring plate, restoration spring between measuring tube and plate, a magnet on the measuring plate and magnetosensitive element fixed to shell and opposite to said magnet. When fluid pushes the measuring plate to make it slant, said mangnetosensitive element can measure the change of magnetic field and output flow signal. Its advantages are high precision, low resistance to fluid, simple structure and long service life.
Owner:谈良知 +10
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