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1296results about How to "Improve connection efficiency" patented technology

Assembly connecting structure and assembly connecting method of assembled concrete frame and shear wall combination

ActiveCN102808465ASplit location is reasonableEasy to manufactureWallsBuilding material handlingFloor slabRebar
The invention relates to the field of assembled concrete structures, in particular to an assembly connecting structure and an assembly connecting method of an assembled concrete frame and shear wall combination. A cast-in-place strip is disposed between precast columns and precast shear walls to connect column-wall embedded rebars. Vertical through holes are reserved in a precast node-precast beam integrated component to achieve communicated connection of vertical rebars for the upper and lower columns and the upper and lower shear walls. Embedded steel sleeves at the lower ends of the precast columns and the precast shear walls are mutually embedded with projecting rebar segments extending up out of the lower columns and the lower walls, and are integrated with the lower columns and the lower walls through cast mortar. The projecting straight rebars at the upper ends of the precast columns and the precast walls penetrate through the through holes reserved in the precast node-precast beam integrated component and protrude a floor slab, and the precast columns and the precast nodes are firmly integrated with the precast shear walls precast beams by cast mortar. Wet operations such as in-place casting of concrete are reduced to the maximum extent, building quality is improved, construction period is shortened, and energy conservation and emission reduction are achieved.
Owner:SHENYANG JIANZHU UNIVERSITY

Multifunctional double-layer core-shell structure magnetic nano particle, preparation method and application thereof

The invention relates to a multifunctional double-layer core-shell structure magnetic nano particle. In the invention, a magnetic nano particle with a particle size of 1-300 nm is used as a core and coated with a double-layer shell consisting of a SiO2 layer with a thickness of 1-200 nm and a hydrolyzed silane coupling agent layer is 1-100 nm thick and comprises one or more multifunctional groups; the particle size and the shell layer thickness can be controlled through regulating the volumes, the weight ratios and the reaction time of the magnetic core, a silicon dioxide precursor, a silane coupling agent and a catalyst in a preparation process; the total particle size of the nano particle can be as small as 5-50 nm and as large as 700-800 nm; the nano particle can have superparamagnetism, paramagnetism and ferromagnetism according to the change of the magnetic core particle size; and one or more bioactive molecules can be connected into the shell layer of the magnetic nano particle or to the surface of the shell layer through a chemical method or a physical method. The invention also provides a preparation method of the multifunctional double-layer core-shell structure magnetic nano particle and application thereof. The particle preparation method has the advantages of simplicity, moderate condition, low cost and easy realization of industrial production. The nano particle can obtain different functions through connecting different bioactive molecules and can be applied to the fields of protein enrichment, biological detection, separation and purification, targeted drug carriers, cell imaging and medical imaging.
Owner:NANJING UNIV

Ordering method of bluetooth devices and system thereof

The invention provides an ordering method of bluetooth devices and a system thereof. The method comprises the following steps that: a historical device list is established and maintained, wherein information of all second wireless devices that were once connected with a first wireless device is stored in the list; according to the stored information, ordering is carried out on the wireless devices in the historical device list and then an ordering result is displayed on a human-computer interface; or searching is carried out on surrounding wireless devices to obtain a surrounding device list; and then, ordering is carried out on the surrounding device list and an ordering result is displayed; after a user selects a wireless device that is needed to be connected at present, wireless connection between the selected wireless device and the user's device is established. According to the embodiment of the invention, on the condition that searching is not carried out on surrounding bluetooth devices, a user can directly search a needed wireless device from a historical record that has been ordered according to the user habit and connection is initiated, so that connection efficiency of the user's device can be substantially improved. In addition, if the user needs to discovery a bluetooth device again, a device with established historical connection can be ordered before a device without established historical connection according to the method, so that it is convenient for the user to carry out selection.
Owner:NUBIA TECHNOLOGY CO LTD

Battery pack

A battery pack is provided, in which external connection terminals are arrayed in the same direction in the module having the plurality of cells connected in series and a wiring that cuts across the module is not generated, and, in which improvement of the workability and reduction of connection failures are achieved by only connecting between the units by means of a bus bar when creating the module. Three pieces of flat-plate cells 2a to 2c are arranged in parallel to configure a three-piece unit 1. A positive electrode terminal 3 and negative electrode terminal 4 are provided at the top of each of the cells 2a to 2c. The negative electrode terminal 4 of the first cell 2a and the positive electrode terminal 3 of the second cell 2b are connected with each other by a first bus bar 5 disposed in an oblique direction, and the negative electrode terminal 4 of the second cell 2b and the positive electrode terminal of the third cell 2c are connected with each other by a second bus bar 6 disposed in a direction perpendicular to the longitudinal direction of the cells. Two pieces of flat-plate cells 12a, 12b are arranged in parallel to configure a two-piece unit 11. The positive electrode terminals 13 and the negative electrode terminals 14 of the cells 12a, 12b are connected with each other by a second bus bar 16.
Owner:KK TOSHIBA

Long connection establishment method and system, and devices

The embodiment of the invention provides a long connection establishment method and system, and devices, relates to the technical field of communication, and mainly aims at ensuring connection quality of a client and a server when long connection is carried out on the client and the server, and moreover improving the connection efficiency of the long connection. The technical scheme used by the embodiment of the invention comprise that the client sends an obtaining request for obtaining client accessible servers to a server side, wherein parameter information of the client is carried in the obtaining request; the server side receives the obtaining request for obtaining the client accessible servers sent by the client, obtains the client accessible servers of which access states satisfy a preset condition according to the parameter information, generates a server list according to the servers of which access states satisfy the preset condition and sends the server list to the client; and the client receives the server list sent by the server side and is connected with the server in the server list, so that the long connection between the client and the server is established. The method, the devices and the system are applied to establishment of the long connection.
Owner:LETV SPORTS CULTURE DEV (BEIJING) CO LTD

Vacuum electron beam brazed joint method of tungsten/low activation steel

The invention discloses a vacuum electron beam brazed joint method of tungsten/low activation steel, belonging to the field of metal materials. According to the method, with an amorphous state T-based belt as brazing filler metal, the tungsten and the low activation steel are subjected to the brazed joint by using the vacuum electron beam braze technology wherein the amorphous state T-based belt contains 30-50 percent by weight of Ti, 30-50 percent by weight of Zr, 10-15 percent by weight of Cu and 5-10 percent by weight of Ni. During soldering, the scanning and the heating are carried out on the electron beam surface from the surface of the tungsten under the conditions that the temperature is controlled to 800-1,200DEG C, the work vacuum degree in the chamber is 1.0-5.0*10<-3>Pa, the accelerating voltage is 100-150KV, the focusing current is 100-600mA, the electron beam current is 1-10mA and the scanning frequency is 0.1-1KHz. The coil is scanned at high frequency by controlling through a computer and the heating time is 1-5 minutes. By using the method, the tungsten and the low activation steel are connected in a short time with high efficiency; and the weld seam interface can be better combined and has no defects of pore, inclusion, cracks and the like. The invention can be widely applied to connecting components of a helium cooled partial filter in a magnetic-confinement nuclear fusion experimental device.
Owner:UNIV OF SCI & TECH BEIJING

Machinery-solid phase composite connecting device and machinery-solid phase composite connecting method

The invention discloses a machinery-solid phase composite connecting device. A blank holder and a female die are arranged from top to bottom, a plate is arranged between the blank holder and the female die, a drive needle is sleeved inside the blank holder, a plurality of spring wafer positioning mechanisms are radially and horizontally distributed in the blank holder, semitubular rivets are vertically arranged in the blank holder and is contacted with the spring wafer positioning mechanisms, and the drive needle, the blank holder, the semitubular rivets and the female die are coaxially arranged. The invention further discloses a machinery-solid phase composite connecting method, accurate positioning and stable driving of the semitubular rivets can be realized through utilizing the spring wafer positioning mechanisms, and process stability and reliability are improved; and solid mixing needles are replaced by the semitubular rivets, rivet force is reduced, joint efficiency is improved, process shrinkage holes through friction stir spot welding are eliminated and machinery-solid phase double connection can be realized at the same time, and static and dynamic mechanics performance of joints are improved. The machinery-solid phase composite connecting method can not only be used for connecting light alloy such as aluminum, magnesium and the like, but also be used for connecting non-metal materials such as composite materials, plastics and the like.
Owner:SHANGHAI JIAO TONG UNIV

Assembly-type building bottom-layer composite floor and connection mode thereof

Provided are an assembly-type building bottom-layer composite floor and a connection mode thereof. Factory-fabricated reinforced concrete with embedded parts is used as independent basis, square headshort columns are factory-prefabricated connection components and connected with upper chord members and lower chord members of main beams through pulling rivets to form outer frames of floors; on thebasis of the outer frames, secondary beams, profiled steel sheets and reinforcing meshes are laid horizontally, a surface course is poured, a decorative layer is attached to the surface course, and thus a mortise and tenon joint type connection mode of the floors and basic nodes is formed by combing insertion, pulling rivet connection and flange connection. According to the assembly-type buildingbottom-layer composite floor and the connection mode, the building mode of a traditional bottom-layer floor can be changed, the assembly type can be achieved, and the defects of poor vibration performance and soundproof effect and the like of an assembly-type light steel composite floor can also be overcome; meanwhile, the assembly-type building bottom-layer composite floor also has the advantages that the floor is assembled rapidly and subjected to industrial production easily and is high in strength and high in production speed, and has large actual project significance and market values topromotion and development of assembly-type buildings.
Owner:谢志强 +1

Modular assembling type cold-bent thin-wall type steel wall board structural system

Provided is a modular assembling type cold-bent thin-wall type steel wall board structural system. A vertical body structure of the cold-bent thin-wall type steel wall board structural system is formed by sequentially connecting a common wall body module, an opened wall body module, an L-shaped wall body module and a T-shaped wall body module. A horizontal body structure of the cold-bent thin-wall type steel wall board structural system is formed by sequentially splicing slab modules. The slab modules are spliced by being connected. The vertical body structure and the slab modules are connected in the mode that the wall body and the slab module are connected. By optimizing the wall body module connection mode, the slab module connection mode, and the wall body and slab module connection mode, the site assembly difficulty and site construction workload are reduced to a great extent, and the whole structural system can be safer and better in anti-seismic property. The modular assembling type cold-bent thin-wall type steel wall board structural system is low in mass, good in anti-seismic property, capable of preserving heat, insulating heat and saving energy, environmentally friendly, low in manufacturing cost, suitable for mid-rise buildings and low-rise buildings, and high in economic and social benefit.
Owner:BEIJING UNIV OF TECH

Prefabricated cold-formed thin-walled steel plate column structure tenon and mortise connection system and construction method thereof

The invention relates to a prefabricated cold-formed thin-walled steel plate column structure tenon and mortise connection system and a construction method thereof, and belongs to the technical fieldof structural engineering. Single-hole columns, double-hole columns, three-hole columns and four-hole columns are support columns of the system. A floor module is the main structure of the system. Theconnection mode between the floor and the columns is the connection mode between the support columns and the main structure of the system. The single-hole columns and the double-hole columns are respectively arranged at joint connection support parts at the bottom of the floor module. The three-hole columns are arranged at corner support parts at the bottom of the floor module. The four-hole columns are located at center cross support parts at the bottom of the floor module. Through the method of optimizing the light steel plate column structure system by implanting beam-column joints in thefloor, the structure is allowed to bear the force more reasonably, the consumption of building materials and the amount of construction work at a construction site are greatly reduced, and a rapid green construction is truly realized. The whole building is sturdy and durable, thermal-insulating, lightweight, energy-saving, environmentally friendly, suitable for all kinds of housing construction and highly applicable, and will bring good economic and social benefits.
Owner:谢志强 +1

Iron-based compound superconducting joint and preparation method thereof

Provided is an iron-based compound superconducting joint. The superconducting joint comprises connected iron-based superconductors, iron-based superconducting powder and a metal sheath. The position between tail ends of the connected iron-based superconductors is filled up with iron-based superconducting powder and wrapped up by a signal-layer or multi-layer metal sheath. The preparation method of the superconducting joint comprises following steps of: (1) peeling non-superconducting layers on surfaces of tail ends of the iron-based superconductors needed to be connected to expose superconducting cores; (2) filling iron-based superconducting powder between tail ends of processed tail ends of the iron-based superconductors and utilizing the multi-layer metal sheath to wrap up tail ends of the iron-based superconductors and the iron-based superconducting powder; (3) welding or not welding the metal sheath processed by the step (2); (4) applying pressure to shrink crease the cross section of the metal sheath prepared by the step (3); and (5) carrying out heat treatment on the metal sheath prepared by the step (4) during or after pressure is applied or not necessarily performing heat treatment.The invention is very suitable for making a superconducting joint in the engineering field.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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