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333 results about "Transverse shear" patented technology

There's transverse shear stress, which occurs in beams and it happens because of bending forces (transverse to the length of the beam). To satisfy static equilibrium on a stress element in that beam you will have transverse shear stress and longitudinal.

Novel numerical control silicon steel sheet transverse shearing line device

The invention discloses a novel numerical control silicon steel sheet transverse shearing line device. The novel numerical control silicon steel sheet transverse shearing line device comprises a control center, a discharging device and a feeding channel. The feeding channel is sequentially provided with a front feeding device, a first punching device, a V-shaped opening shearing device, a second punching device, a rear feeding device, a swing shearing device and a discharging table. A material collecting device is arranged behind the discharging table. The material collecting device comprises a magnetic conveying belt and a sheet stacking table. The numerical control silicon steel sheet transverse shearing line device has the beneficial effects that the front feeding device and the rear feeding device are arranged, waste of sheets is reduced, and the shearing precision is improved; twisting and bulging of silicon steel sheets are avoided, and high-speed conveying of the silicon steel sheets is achieved; the first punching device and the second punching device are symmetrically distributed on the front side and the rear side of the V-shaped opening shearing device, one-step punching is achieved, time is saved, and the production efficiency is improved; and according to the material collecting device, the magnetic conveying belt is matched with the sheet stacking table, shorn silicon steel sheets are automatically stacked in order, operation of workers is reduced, human resources are saved, and efficiency is improved.
Owner:CANWIN AUTOMATIC EQUIP CO LTD

Electrode for in-situ electrical measurement for diamond anvil cell and method for producing the same

The invention discloses an in-situ electrical measuring electrode that is used in diamond-pair anvil cells and a manufacturing method thereof, and belongs to the technical field of high-temperature and high-voltage devices. Four electrodes (1) are deposited on the surface of a diamond anvil cell (8) and distribute from an anvil surface to a lateral surface of the diamond anvil cell (8); the electrodes (1) are diamond films doped with boron; a diamond insulating layer (2) covers the anvil surface and the lateral surface of the diamond anvil cell (8) as well as the electrodes (1) thereof; the electrodes (1) are exposed at one end of the anvil surface, the exposed position lies inside a sample cavity (9), and the electrodes (1) are exposed at one end of the lateral surface and connected with an electrode lead (5). A diamond film microcircuit and the diamond insulating layer are simultaneously integrated onto the surface of the diamond anvil cell by utilizing the film deposition technique, the nanometer seeding technique, the masking technique and the photolithographic method. The manufacturing method of the in-situ electrical measuring electrode prevents the electrode from being destroyed by transverse shearing force and overcomes the electrode corrosion by samples under the high-voltage condition, thus widening the research field of electrical in-situ measurement under high voltage.
Owner:JILIN UNIV

Fibre-reinforced compound material core and preparation method thereof

The invention aims at providing a fibre-reinforced compound material core and a preparation method thereof. The fibre-reinforced compound material core comprises an inner structure and an outer-layer insulating structure, wherein the inner structure is formed by bonding a plurality of parallel or spirally twisted fibre-reinforced resin-based fine rods with high-temperature resistance, the outer-layer insulating structure is a non-conductive resin coating with high-temperature resistance or a non-conductive fibre-reinforced resin layer with high-temperature resistance, and the thickness of the outer-layer insulating structure is 10 to 40 percent of the diameter of a conductor core; and moreover, the thickness along the perimeter is uniform. The fibre-reinforced resin-based fine rods with the high-temperature resistance pass through a wedge-shaped opening die injected with an adhesive; and the fibre-reinforced resin-based fine rods with the high-temperature resistance are bonded together by the adhesive, are coated with a fibre-reinforced resin compound material layer or a resin coating, pass through a high-temperature opening die and are solidified and formed. According to the fibre-reinforced compound material core and the preparation method thereof, the transverse shear resistance, the compression resistance, the toughness and the fatigue resistance are obviously enhanced, the defects that a traditional carbon-fibre compound core is crisp in property, is easy to break off, is ruptured in the use of an aluminum stranded wire, and the like are avoided, and the safety performance and the service life of the fibre-reinforced compound material core are greatly enhanced.
Owner:ZHEJIANG ZHONG JU COMPOSITE MATERIAL CO LTD +1

Hollow slab bridge and construction method thereof

The invention discloses a hollow slab bridge, which comprises side hollow slabs on two sides and middle hollow slabs continuously laid in the middle, wherein the middle part of one side of each middle hollow slab is provided with a sunken groove, and the middle part of the other side of each middle hollow slab is provided with a raised strip; the lower surface of the groove is an upwards inclined bevel or plane, the upper surface of the groove is a downwards inclined bevel or plane, the lower surface of the raised strip matched with the groove is an upwards inclined bevel or plane, and the upper surface of the raised strip is a downwards inclined bevel or plane; and one side of each side hollow slab close to the edge is a straight edge, and the other side of each side hollow slab is provided with a groove or a raised strip matched with the adjacent middle hollow slab. A construction method for the hollow slab bridge comprises the following steps of: prefabricating the hollow slabs; hoisting the hollow slabs; and treating the grooves and the raised strips. Tongue and groove joints are not required in the hollow slab bridge, and the transverse shearing force is not transferred through concrete among the tongue and groove joints, so that the transverse integrity of the hollow slab bridge is improved, and the shearing force transfer capacity among the slabs is enhanced.
Owner:ZHENGZHOU UNIV

Formwork combination reinforcing and supporting structure used in short-leg shear wall construction and construction method thereof

The invention relates to a formwork combination reinforcing and supporting structure used in short-leg shear wall construction and a construction method thereof. The structure comprises formworks used for pouring a longitudinal short-leg shear wall and a transverse short-leg shear wall and split bolts between the formworks, and back supports of the formworks are composed of secondary edges and primary edges. The structure further comprises a plurality of horizontally arranged wall hoop bolts in the height direction of walls on the peripheries of the longitudinal shear wall formwork and the transverse shear wall formwork, wherein the wall hoop bolts are used for connecting and reinforcing a whole formwork enclosure system and the ends of the wall formworks in a tensioning mode. The lower portion of the formwork enclosure system is fixedly connected with short bolts pre-buried in last process, and tensile-connection bottom sealing is formed. For installation of the formworks of the short-leg shear walls, the structures of the formworks themselves are used in combination with the wall hoop bolts, therefore, the stability of a short-leg shear wall formwork supporting system is enhanced, the accuracy of the formworks in horizontal position and structure size is guaranteed, the effects on formwork supporting and reinforcement are achieved, and the purpose of lowering manufacturing cost is realized.
Owner:ANHUI HUALI CONSTR GRP

City subway overlapped shield tunnel segment structure adopting special longitudinal connecting pieces

The invention discloses a city subway overlapped shield tunnel segment structure adopting special longitudinal connecting pieces. The city subway overlapped shield tunnel segment structure is formed by splicing a plurality of annular segments. A plurality of steel clamping grooves are embedded in the two sides of the segments annularly. Every two adjacent segments are longitudinally connected through the multiple steel connecting pieces. The two ends of each steel connecting piece are buckled in the corresponding steel clamping grooves in the two corresponding adjacent annular segments. The connecting pieces adopting the embedding and buckling technology are easy and convenient to manufacture and install. A cavity formed after the connecting pieces are assembled is filled and compacted through embedded holes, so that it is ensured that the connecting pieces are fastened and reliable and meet the requirement for durable using. By the application of the city subway overlapped shield tunnel segment structure, conventional tunnel periphery soil body passive enforcement is changed into tunnel segment active enforcement in the overlapped tunnel design, the longitudinal tension, bending and transverse shear resisting performance of the tunnel is greatly improved, the downward shield tunnel enforcement measure is simplified, the building cost of projects is reduced, and the influences of upward tunnel running train dynamic loads on a downward tunnel are reduced.
Owner:ZHEJIANG PROVINCIAL INST OF COMM PLANNING DESIGN & RES CO LTD

Device and method for inscribing fiber period adjustable fiber grating

The invention discloses a device and method inscribing a fiber period adjustable fiber grating. A laser, a beam expander, a convergent lens, a semi-transparent and semi-reflective mirror, a reflector, a Fourier lens, a cylindrical mirror and the like are adopted to form a transverse shear Sagnac interference fiber grating inscribing light path, a linear interference pattern high in contrast ratio and adjustable in period is obtained and acted on a fiber core of a fiber (or other guided wave materials), and the grating is inscribed. The period of the inscribed grating can be continuously changed online by adjusting the transverse shear amount of a Sagnac interferometer, and the inscribing of the period adjustable fiber grating is achieved. Fine adjustment of the shear amount of the interferometer is achieved through a micro displacement platform, and the needed any grating period can be obtained according to an equation. The light path is adjusted easily, the requirement for the coherence of a laser light source is low, the stripe contrast ratio is high, stability is good, the grating period can be continuously adjusted online, and the problems that in an existing mask plate grating inscribing scheme, the cost for replacing a mask plate is high, and the light path is adjusted complexly are solved.
Owner:BEIHANG UNIV

Prefabricated underground diaphragm wall and method for constructing outer basement wall and floor slabs

ActiveCN104018518AFast dryingImprove lateral shear resistanceArtificial islandsExcavationsSlurry wallBasement
The invention discloses a prefabricated underground diaphragm wall and a method for constructing an outer basement wall and floor slabs. The prefabricated underground diaphragm wall comprises single wall bodies (1) and pile foundations (2). The single wall bodies (1) are longitudinally stacked so as to form a wall line. All the single wall bodies (1) and the pile foundations (2) of the wall line are tensioned through prestressed reinforcement bars (7) and prestress holes (3) are filled with cement paste. The inner surface of each single wall body (1) is provided with a row of preformed holes and a pre-buried steel plate. Each preformed hole is provided with a connecting reinforcement bar inside. The method is characterized in that the prestressed reinforcement bars (7) are tensioned, so that all the single wall bodies (1) and all the pile foundations (2) of the wall line are tensioned, and horizontal reinforcement bars of a floor slab reinforcement cage extend into the preformed holes and are in butt joint with the connecting reinforcement bars. According to the prefabricated underground diaphragm wall and the method for constructing the outer basement wall and the floor slabs, the construction speed can be increased, a working period can be shortened, the transverse shearing resistance and longitudinal pressure bearing capacity are good, and underground diaphragm wall concrete does not need to be knocked off when the floor slabs are constructed.
Owner:NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG

Long-wave infrared space modulation interference miniaturizing method

The invention relates to a long-wave infrared space modulation interference miniaturizing method. The method is characterized in that an interference assembly is composed of a spectroscope, a pyramid reflector I, a pyramid reflector II and two aperture diaphragms; an included angle between the spectroscope and parallel incident light is 135degree; from the optical axis position of reflected light, the top position of the pyramid reflector I starts to move anticlockwise for 1 / 4 transverse shear amount along the direction vertical to the optical axis of the reflected light; from the optical axis position of transmitted light, the top position of the pyramid reflector II starts to move anticlockwise for 1 / 4 transverse shear amount along the direction vertical to the optical axis of the transmitted light; and the two aperture diaphragms are respectively arranged at the top positions of the two pyramid reflectors, and are respectively placed vertical to the optical axes of the reflected light and the transmitted light. Under the condition that optical parameters are consistent, the size of the spectroscope is decreased, the sizes of the interference assembly and a spectrometer are effectively controlled, the difficulties in material growing and processing are reduced, and the cost is saved.
Owner:KUNMING INST OF PHYSICS

High-damping composite stay cable based on carbon fibers and steel strands

ActiveCN104213507ARaise the log reduction rateAccelerate the attenuation of vibrationCable-stayed bridgeBridge structural detailsFiberVibration attenuation
The invention discloses a high-damping composite stay cable based on carbon fibers and steel strands, and relates to the field of stay cables. The high-damping combined stay cable comprises a core layer, 2-4 composite layers and 1-2 layers of sheaths which are arranged in sequence from inside to outside, wherein a sticky elastic damping material is filled between the core layer and each composite layer; the core layer consists of a plurality of high-intensity steel strands which are tightly arrayed; the composite layers consist of a plurality of composite fibers which are tightly arrayed; the adjacent composite layers are tightly attached; the composite fibers are prepared from a high-intensity steel wire and six carbon fibers; the six carbon fibers wrap the periphery of the high-intensity steel wire and are twisted to form a whole. Vibration attenuation of the stay cable can be accelerated, and the wind-resistant stability of an ultralong stay cable is effectively improved; the weight of the stay cable is reduced, and the transverse shear strength of the stay cable is guaranteed; furthermore, single-cable transportation and cable hanging can be realized, and the ultralong stay cable construction difficulty is reduced.
Owner:CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD

Method for improving shear strength of nonmetal anti-floating anchor

The invention belongs to the technical field of anti-floating anchors of building construction, and relates to a method for improving the shear strength of an interface of an inner anchorage section and an outer anchorage section of a nonmetal anti-floating anchor. According to the method, a steel arm is additionally mounted on an anchor body, at the inner anchorage section and the outer anchorage section, of the nonmetal anti-floating anchor, is a seamless steel pipe, and is tightly connected with the anchor and a bottom plate of a building (structure) at the outer anchorage section, tightly connected with the anchor and mortar at the inner anchorage section, and tightly bonded on the outer side of a GFRP (Glass Fiber Reinforced Polymer) anchor; since the rigidity of the seamless steel pipe is higher, the defect of lower transverse shear strength of the GFRP anchor is overcome; the steel arm can provide the sufficient transverse shear strength under the action of horizontal load; and therefore, the purpose of limiting the transverse shear deformation of the GFRP anchor is achieved. The method is simple to operate, low in cost, high in reliability, and good in economic benefit, and has prominent substantial characteristics and significant progress, required devices are simple and easy to obtain, and the mounting and construction are convenient.
Owner:QINGDAO TECHNOLOGICAL UNIVERSITY

Instantaneous phase-shift transverse shear interferometer

The invention relates to an instantaneous phase-shift transverse shear interferometer, which aims to solve the problems of troublesome operation, high requirements of systems for environment, large influence of environment on acquisition results in the prior art. The instantaneous phase-shift transverse shear interferometer provided by the invention comprises a parallel polarization beam splitter 2, a one-quarter wave plate 3, a two-dimensional rectangular grating 4, a first convex lens 5, a spatial filter 6, a second convex lens 7, a polaroid array 8 and a CCD 9 which are concentrically arranged in turn on a main optical axis, wherein the CCD 9 is connected with a computer 1; the direction of an optical axis of a crystal of the parallel polarization beam splitter 2 and an incident surface are at an included angle of 45 degrees; the direction of a fast axis of the one-quarter wave plate 3 is positioned on a plane at an angle of 45 degrees to the plane consisting of the direction of the optical axis of the crystal of the parallel polarization beam splitter 2 and the main optical axis; and the spatial filter 6 is arranged on a back focal plane of the first convex lens 5 and a front focal plane of the second convex lens 7. The interferometer has the advantages of reducing the requirements of the systems for environment and increasing measurement accuracy, along with easy operation.
Owner:XIAN TECHNOLOGICAL UNIV

Hyperspectral imaging device based on polarization interference and imaging method thereof

The present invention discloses a hyperspectral imaging device based on polarization interference and an imaging method thereof. The hyperspectral imaging device based on polarization interference is characterized in that a prepositive imaging objective lens, a diaphragm, a collimation objective lens, a polarization beam splitter, a lambda/2 wave plate, an Savart plate and a lambda/4 wave plate are arranged orderly in a co-optical axis manner, and an optical axis in which the above elements are located is a first optical axis; a polarization splitting prism, a postpositive imaging objective lens and a detector are arranged orderly in the co-optical axis manner, and an optical axis in which the above elements are located is a second optical axis; the first optical axis and the second optical axis are vertical. A light beam transmitted or reflected by a target passes the device and generates a two-dimensional image containing the interference information, and a corresponding spectral image of the target can be obtained by utilizing a Fourier transform spectrum recovery method to process the two-dimensional image. According to the present invention, the Savart plate and the lambda/4 wave plate form a transverse shear beam splitter for the first time, so that an effective technical path can be provided for the hyperspectral imaging device which is stable in structure and low in complexity.
Owner:NANJING UNIV OF SCI & TECH
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