709results about How to "Large span" patented technology

The hollow floor slab includes column, solid belt, solid reinforced beam with dense ribs, reinforced facing board, and composite box with lower thin bottom board. The production process includes: a) laying and tying reinforcing steel bar in the floor slab formwork; b) laying the steel wire net and other reinforcing material; c) setting and fixing made composite thin box; d) tying reinforcing steel bar for the facing board; e) fixing reinforcing bars with iron wire; and f) embedding prefabricated pipeline inside the facing board and the dense ribs. The present invention may produce flat sealed floor slab cavity with dense ribs in once deposition.

Described herein are devices, systems and methods for determining if a nerve is nearby a device or a region of a device. In general, a device for determining if a nerve is nearby a device includes an elongate body having an outer surface with one or more bipole pairs arranged on the outer surface. Bipole pairs may also be referred to as tight bipoles. The bipole pairs may be arranged as a bipole network, and may include a cathode and an anode that are spaced relatively close together to form a limited broadcast field. In general, the broadcast filed is a controlled or “tight” broadcast field that extends from the bipole pair(s). Methods of using these devices and system are also described.

Described herein are devices, systems and methods for determining if a nerve is nearby a device or a region of a device. In general, a device for determining if a nerve is nearby a device includes an elongate body having an outer surface with one or more bipole pairs arranged on the outer surface. Bipole pairs may also be referred to as tight bipoles. The bipole pairs may be arranged as a bipole network, and may include a cathode and an anode that are spaced relatively close together to form a limited broadcast field. In general, the broadcast filed is a controlled or “tight” broadcast field that extends from the bipole pair(s). Methods of using these devices and system are also described.

A multiple speed power transmission is disclosed having an input, first and second input shafts, first and second clutches releasably coupling the input to the first and second input shafts, respectively, and a set of selectable power paths connecting the first and second input shafts to the output, the set of selectable power paths having at least one power path that includes both the first and second input shafts.

A wind-driven rotor is connected to a generator via a multi-stage planetary transmission arrangement and a spur gear stage. The rotor is supported in the housing of the transmission, and an annular gear carrier with an annular gear is arranged directly on the rotor. The transmission represents a compact drive with a high transmission ratio for driving generators by wind power and makes assembly simple.

A method for controlling gear shifts in a multiple speed power transmission for a vehicle that includes a first clutch for transmitting power through a first power path producing a reverse gear, and a second clutch for transmitting power through a second power path producing a forward gear. The method includes selecting a reverse range in which the transmission is to operate, preparing the transmission to transmit power alternately through the first power path and second power path; engaging the first clutch and transmitting power through the first power path in the reverse gear, selecting a forward range in which the transmission is to operate, disengaging the first clutch and engaging the second clutch, and transmitting power through the second power path in the forward gear.

The invention relates to a construction method of wide span prestressed beam string structure, which is capable of shortening construction time under the construction quality guaranteed. The construction method of the above beam string structure comprises the following steps of: 1) tension calculation under different working conditions; 2) simulation calculation; 3) stay cable processing; 4) supporting moulding bed assembly; 5) beam string structure assembly and welding; 6) stay cable installation; 7) beam string stay cable tensioning; 8) beam string hoisting; and 9) sampling observation of the tension value of the installed beam string structure to see whether the tension value conforms to the design.

A wind-driven rotor is connected to a generator via a multi-stage planetary transmission arrangement and a spur gear stage. The rotor is supported in the housing of the transmission, and an annular gear carrier with an annular gear is arranged directly on the rotor. The transmission represents a compact drive with a high transmission ratio for driving generators by wind power and makes assembly simple.

Improvements to the hinge of a folding aircraft wing including a load bearing hinge mechanism with multiple locking mechanisms. The mechanism includes rigid panels that cover the hinge area when the wing is deployed, and the wing itself covers the hinge area when the wing is retracted. A control lever is used to actuate the wing and incorporates safety features to prevent unwanted actuation.

A method for controlling gear shifts in a multiple speed power transmission for a vehicle that includes a first clutch for transmitting power through a first power path producing a reverse gear, and a second clutch for transmitting power through a second power path producing a forward gear. The method includes selecting a reverse range in which the transmission is to operate, preparing the transmission to transmit power alternately through the first power path and second power path; engaging the first clutch and transmitting power through the first power path in the reverse gear, selecting a forward range in which the transmission is to operate, disengaging the first clutch and engaging the second clutch, and transmitting power through the second power path in the forward gear.

Improvements to the hinge of a folding aircraft wing including a load bearing hinge mechanism with multiple locking mechanisms. The mechanism includes rigid panels that cover the hinge area when the wing is deployed, and the wing itself covers the hinge area when the wing is retracted. A control lever is used to actuate the wing and incorporates safety features to prevent unwanted actuation.

The invention discloses a shooting action identification method based on human body skeleton map extraction and grouping motion diagram inquiry. The method includes the following steps: shooting action is acquired into database in advance and is grouped by class, each group constructs a motion diagram, all the actions are rendered into two-dimensional image under multi-angle and then key characteristic is extracted, and image characteristic value of each gesture is calculated. Accurate outline extraction is carried out on shooting picture sequence shot in operation when a person is shooting, characteristic value of skeleton map is calculated, the group in which the gesture most similar to the characteristic value thereof is located is found in database and is taken as a hit group, the group with the most hit in all the skeleton hit of the shooting action is found, then the node where the gesture the most similar to the characteristic value of each skeleton map on the motion diagram is located is found, the points are analyzed and repaired into a continuous section, and the continuous section is taken as action identification result. The invention can fast and accurately identify shooting action only by utilizing an image capturing device.

The invention relates to a novel prestress industrial stockyard canopy structure and a method for constructing the same. The novel prestress industrial stockyard canopy structure comprises a plurality of span prestress steel trusses and a plurality of spatial string beams. The span prestress steel trusses are transversely and parallelly arranged, the spatial string beams are longitudinally arranged, and the prestress steel trusses and the spatial string beams are connected with one another to form an integral structure. The method for constructing the novel prestress industrial stockyard canopy structure which is a combination structure with the prestress steel trusses and the spatial string beams includes designing the structure; determining construction schemes; grouping the trusses; splicing the steel trusses on the ground; setting temporary support scaffolds; mounting longitudinal stable trusses; constructing the spatial string beams, and the like. The novel prestress industrial stockyard canopy structure and the method have the advantages that the spatial string beams and the prestress steel trusses are combined with one another, structural merits of the spatial string beams and the prestress steel trusses are sufficiently played, and accordingly the building structure can be optimized in the aspects of modeling, utilized spaces, manufacturing cost, construction, installation and transportation.

The invention provides a bamboo original state multiparty recombination material, which is characterized in that the external surface of the position of bamboo segment with equivalent diameter are processed into regular polygonal bamboo units; bamboo recombination material is obtained by arranging the bamboo units in parallel by the edges of the cross sections, vertical finger joint and prolonged bonding. The basic manufacturing method comprises the sawing of segments, milling of regular polygons, milling of finger tenons, glue application and assembly, compression and heating, cold solidification and other working procedures. The edges of the regular polygonal bamboo units range from four to eight. The bamboo original state multiparty recombination material has the advantages that bamboo has the physical structural characteristics of hollowness, conicity and bamboo joint; by arranging the hollow bamboo units in parallel by the edges and extending vertically at will, the recombination material maintains the natural structure of bamboo, and structural material with high strength, long length and large span can be manufactured; the material can replace wood, improve the utilization ration of bamboo, save forest resources, and can replace concrete, steel and other structural materials in certain usages, and the natural-intimate ability of structural material is improved.

The invention provides an especial-big span suspension bridge of a uniparted hyperboloid space rope net main cable and a construction method thereof. A straight line character of the uniparted hyperboloid is used to change a vertical parallel cable rope system of an original suspension bridge. A thick and heavy centralized cable rope is changed into a dispersive space steel wire cable rope. Multiple strand of steel wire cable ropes are arranged in a cross mode. Space rope net main cable-cross nodes are fixed to form a space cable rope system of the uniparted hyperboloid type. An oval steel strengthening ring beam is arranged. A suspender and a stiffening beam are installed. A gate-type rigidity middle buckle is arranged. The especial-big span suspension bridge of the uniparted hyperboloid space rope net main cable system is built. The especial-big span suspension bridge of the uniparted hyperboloid space rope net main cable system has the advantages of being strong in span capacity, large in space structure rigidity, high in screw frequency ratio, good in wind resistance stability and the like. The novel space main cable system suspension bridge is capable of radically saving the problem of the wind resistance stability of the big span suspension bridge and used for projects of a striding sea connected island. The especial-big span channel suspension bridge of 3000-5000 meters is built.

The invention relates to an assembling type pre-stress honeycombed ribbed web steel beam and belongs to the technical field of a building section bar. The assembling type pre-stress honeycombed ribbed web steel beam is formed by assembling two butt-joint pre-stress ripple web ribbed steel channel beam webs through bolts. Each pre-stress ripple web ribbed steel channel beam is formed by a top flange, a web, a bottom flange, a pre-stress cable, transverse stiffening ribs, anchorage devices and beam end plates. A section die of the pre-stress ripple steel channel beam web is formed by the top flange, the bottom flange and the web; the section of the web is in a uniform or non-uniform periodically-repeated waveform; the transverse stiffening ribs are vertically placed among the two flanges and the web; the beam end plates are parallel to the transverse stiffening ribs and are arranged at the two ends of the beam; and the pre-stress cable is tensioned and then is fixed on the beam end plates through the anchorage devices. The assembling type pre-stress honeycombed ribbed web steel beam disclosed by the invention is a novel assembling type pre-stress steel beam which is applicable to an assembling type steel structure system, particularly a large-span multi-story assembling type steel structure system; and compared with a conventional assembling type beam, the steel beam has the advantages of light self weight, high bearing capability, great span and the like.

The invention relates to a glass curtain wall with a steel cable braced structure, in particular to a unidirectional double-layer cable curtain wall. Each set of the steel cables of the glass curtain wall comprises an outer steel cable and an inner steel cable, wherein, the inner steel cable and the outer steel cable are respectively clamped by an inner steel cable clamp and an outer steel cable clamp; the inner steel cable clamp and the outer steel cable clamp are connected into a whole by a connecting rod, and tightly fixed with a glass press plate. By adopting the braced structure, glass panels are fixedly connected into a whole by the inner steel cable and the outer steel cable under the effect of the glass press plate, thus forming a whole glass curtain wall. Owing to the arrangement of the double cable net, the bearing capacity and stability of the cable net are improved. For large-span curtain walls, the glass curtain wall can solve the problems of a single cable net, such as large deformation, inadequate bearing capacity, low permeability resulting from a space cable net structure, etc. By using the double-layer cable net brace structure, a concise and permeable, large-span and huge glass curtain wall is established without adding structural elements in the space.

The invention discloses a bridge strain detection sensor based on a wireless sensing network interface. A data collecting module of the sensor is connected with a weak signal conditioning amplifier module, the weak signal conditioning amplifier module is connected with a data processing module, the data processing module is connected with a wireless transmission module, the wireless transmitting module is connected with a wireless receiving module, and finally the wireless receiving module is connected with a PC terminal; an ATmega 128L single chip in the data processing module is provided with an eight-channel tens-place ADC switching port, so that the strain detection sensor can detect the strain signals of eight channels, thus a CC 2420 radio frequency chip of the wireless transmitting module is used for carrying out wireless transmitting. And the signals are received by the wireless receiving module and then transmitted to the PC terminal by an SPI bus. The invention can detect the bearing capacity of the bridge and verify and develop the structural design of the bridge, and has the characteristics of no wiring, high detection efficiency, real-time detection, etc.

The invention relates to a method for observing the crack propagation path of a titanium alloy under a plane strain state. The method comprises the steps of: (1) preparation of a three-point bending sample; (2) prefabrication of a cut and a fatigue crack; (3) control of plane strain condition I type crack initiation, propagation and arrest; and (4) preparation and observation of a crack propagation path micro-sample. By the method provided in the invention, the crack propagation path of the titanium alloy under a plane strain state can be observed, and simultaneously, microstructure characteristics and other information of two sides of the crack propagation path and the material around a crack tip can be acquired, so that transgranular or intergranular propagation mode of the crack can be judged accurately.

Disclosed is a prestressed concrete on-site pouring hollow slab filled with light material combined unit, which comprises light material combined unit, upper layer reinforcing steel bar, lower layer reinforcing steel bar, tendon, blind beam reinforcing steel bar and concrete. The light material combined unit consists of light tubes and connection bar, which is arranged between the upper layer reinforcing steel bar and the lower layer reinforcing steel bar, the combined unit tubes is in the same direction with the bigger bending moment within the slab, The blind beam is arranged at intervals of a certain distances, in which the tendon is centralized laid. Said on-site pouring slab has the advantages of both the prestressed structure and the hollow slab structure, has high hollow percentage, implements one time concrete pouring moulding, is suitable not only for one-way slab, but also for two-way slab. The slab has big span, light weight, good heat and sound insulation effects, good reliability, shock resistance and crack resistance.

The invention relates to a composite frame system with beam column flanges being made of steel pipe concrete and a construction method. The composite frame system with the beam column flanges being made of the steel pipe concrete is formed by connecting composite columns with composite beams through joints. The composite beams are horizontally arranged among the composite columns. The joints are steel pipe concrete integral type joints. The composite columns are cross-shaped or I-shaped composite columns with the flanges being made of the circular steel pipe concrete. The composite beams are I-shaped honeycombed beams with the flanges being made of the steel pipe concrete. The joints and the composite columns are fixedly connected at respective connecting plates through high-strength bolts. The joints and the composite beams are connected through buffer sections which are I-shaped honeycombed beams with the flanges being made of the steel pipe concrete. The cross sections of the buffer sections are variable cross sections gradually diminished from the two ends to the centers, and the cross sections of the buffer sections are smallest at the midpoints. The problems that according to an existing steel-concrete composite structure, construction is complex, connection and stability between the composite structure are poor, and the joints are liable to damage under the earthquake effect are solved.

The invention relates to a construction method for an overall formwork one-time forming structure of a pier. The method includes the following steps of (1) bearing platform surface treatment, (2) erection of a temporary scaffold for pier stud construction, (3) steel bar manufacturing and mounting, (4) formwork mounting, (5) concrete pouring, (6) formwork dismantling and curing, and (7) prestress tensioning and mortar pressing for tie beams. The construction method has the advantages of environmental friendliness, convenient construction, low manufacturing cost and the like.

The present invention relates to a corrugated plate web girder. The structure of the corrugated plate web girder comprises an upper flange plate, a lower flange plate and a corrugated web. The corrugated plate web girder has the following characteristics: prestressed ribs, which are fixed on girder end plates by anchors, are arranged on the corrugated web; or reinforced rib plates with holes are arranged on both sides of the corrugated web; and the prestressed ribs pass through the reinforced rib plates and are fixed on the reinforced rib plates of both ends by the anchors. The corrugated plate web girder has the following advantages: the corrugated plate web girder adopts the prestressing technology, so the bearing capability of the girder structure is enhanced; the weight is light, so the corrugated plate web girder can be adapted to a large span; and the corrugated plate web girder has good designability and practicability.

The present invention relates in general to a method, apparatus, and article of manufacture for providing high-speed digital communications through a communications channel. In one aspect, the present invention employs variable delay FIR equalizer in the transmitter module to increase the system performance in channel communications.

The invention discloses a square steel pipe fabricated column-prefabricated superposed beam integrally-fabricated frame and a construction method. The frame comprises a square steel pipe with inner and outer ribs, a square steel pipe casing with connecting wing plates and a prefabricated superposed beam. The square steel pipe is formed by rolling once, a thin centrifugally-produced concrete protective wall is arranged inside the square steel pipe, and high-performance concrete wraps the square steel pipe, so that a square steel pipe fabricated column is formed. The square steel pipe casing with the connecting wing plates is used for vertical connection between one upper square steel pipe fabricated column and one lower square steel pipe fabricated column as well as connection between the prefabricated superposed beam and the square steel pipe fabricated column. Short I-beams are arranged at the ends of the prefabricated superposed beam, and the prefabricated superposed beam is connected with the connecting wing plates on the square steel pipe casing through high-strength bolts. An engineered cementitious composite or fiber reinforced cement composite is poured in beam-column joint connection areas. The concrete fabricated superposed beam is connected with prefabricated floor slabs as well as the prefabricated floor slabs are connected both through fiber reinforced composite plastic boards. A prefabricated house has the advantages of reasonable stress, convenience in construction, high joint ductility, good endurance and anti-seismic performance and the like.

A multiple speed power transmission is disclosed having an input, first and second input shafts, first and second clutches releasably coupling the input to the first and second input shafts, respectively, and a set of selectable power paths connecting the first and second input shafts to the output, the set of selectable power paths having at least one power path that includes both the first and second input shafts.

The invention discloses a low pressure air dome which is an air rib support arc-shaped tent with double-layer roof, comprising a tent body protecting part, a rib support part, a rope hanging part, a tent fixing part and air charging equipment; the tent body protecting part comprises an outer tent top, an outer fronton, an inner tent and ground fabric; the outer tent top and the outer fronton are connected to form an outer tent by an interlink belt and Velcro, and the outer tent covers the external part of the rib support part; the inner tent is a whole and hung in the rib support part; a thermal insulation layer is arranged between the outer tent and the inner tent. The low pressure air dome is easy to pitch, safe in use and convenient in storage and transportation, has comprehensive supporting measures and wide use, can be used under different ground conditions and has wide span inside the tent without any barriers and high space utilization ratio; in addition, the fronton door can be opened, thus being convenient for in and out of oversize vehicles and weaponry.

A linear motor is provided that includes a rod-like member having a cylindrical body made of a non-magnetic material and a plurality of plate-like segment magnets accommodated in the cylindrical body such that they are stacked in a longitudinal axial direction of the cylindrical body and a coil member having a polyphase coil. The rod-like member is arranged to extend through a center bore of the coil member. The rod-like member of the linear motor comprises the cylindrical body having a substantially oval or substantially rectangular section and the plurality of segment magnets having a substantially oval or substantially rectangular plate shape that are accommodated in the cylindrical body and stacked in the axial direction of the cylindrical body. The section of the center bore of the coil member is substantially oval or substantially rectangular corresponding to the shape of the section of the rod-like member.