37 results about "Membrane tension" patented technology

The invention provides a cable membrane greenhouse and a building method thereof. The cable membrane greenhouse comprises cable membrane supporting structures, cable membrane tension structures and a cable membrane enclosure structure. The cable membrane supporting structures extend in a horizontal linear shape. One or more groups of cable membrane supporting structures are arranged, and each group of cable membrane supporting structures comprises one or more cable membrane supporting structures. A plurality of cable membrane supporting structures are arranged on the same vertical face. The cable membrane tension structures extend in a horizontal linear shape, or extend in a heaving and dipping mode in the horizontal direction. The cable membrane enclosure structure is of a structure integrally formed by a plastic membrane and a plurality of parallel inhaul cables in parallel. The cable membrane greenhouse is more reasonable in structure, the windproof and heat preservation performance of the cable membrane greenhouse are improved through the cable membrane enclosure structure, the cable membrane supporting structures and the cable membrane tension structures, the cable membrane greenhouse is larger in space and span, and a ventilation structure is simple and easier to operate; meanwhile, great consumption of steel arch structures and membrane pressing structures are avoided, the great cable membrane greenhouse building cost is saved, and manpower and material resources are saved.

The invention discloses a lithium ion battery negative plate. The lithium ion battery negative plate comprises a negative current collector and negative active substance layers distributed on two surfaces of the negative current collector, wherein at least one surface of each negative active substance layer is provided with a hot-press molten protruded point structure, and the distribution density of the protruded point structure is 0.1-10mg/1540.25mm<2>. By utilizing the protruded point structures arranged on the lithium ion battery negative plate, a buffer gap is provided between the negative plate and a diaphragm layer so as to relieve an expansion force generated during continuous expansion of the negative plate in a cycle process and an insulation membrane tension force generated during winding, so that the cycle life of a lithium ion battery can be prolonged, and the safety performance of the lithium ion battery can be improved; and by utilizing the buffer gap, a high-speed channel is provided for the infiltration of electrolyte into the negative plate, so that the standing time after liquid injection of the lithium ion battery can be shortened. Besides, the invention further discloses the lithium ion battery adopting the lithium ion battery negative plate.

The invention belongs to the field of steel structure buildings and particularly relates to a transverse-moving folding type membrane structure retractable roof and an open-close method. The transverse-moving folding type membrane structure retractable roof comprises a plurality of independent steel trusses, a foldable film and an open-close system. The open-close system comprises rail systems, driving trolley systems, transmission systems, membrane tension limiting systems and buffer systems. Under control of an electrical system, the trusses are expanded and retracted sequentially along arc-shaped rails through the open-close systems, and thus folding type opening and closing of the roof are achieved. The transverse-moving folding type membrane structure retractable roof is reasonable instructural design, easy to mount, light in roofing structure, reliable in open-close mode and suitable for a roofing system in the small-span space structural form.

The invention discloses a stretched membrane feeding tension control device, which comprises an installing frame and a stretched membrane unreeling shaft. The stretched membrane feeding tension control device is characterized in that a tension control roller is arranged in a feeding guide roller and is arranged at an upper swinging end of a swinging rod, the winging rod is fixedly arranged on an eccentric shaft, the eccentric shaft is rotationally arranged on the installing frame, the eccentric shaft is reset through a torsion spring arranged at the shaft end of the eccentric shaft or is reset through a tension spring regulating component arranged at the lower end of the swinging rod after rotating, a slide seat capable of leftwards and rightwards sliding is arranged at the side edge of the installing frame, one end of the slide seat is provided with a brake block to be aligned with a brake wheel arranged at the shaft end of the stretched membrane unreeling shaft, the other end of the slide seat is provided with a brake spring, a slide moving window is arranged on the slide seat, a slide block and a rolling bearing are movably arranged in the slide moving window, and an eccentric shaft head of the eccentric shaft is arranged in an inner hole of the rolling bearing in a sheathing way. The stretched membrane feeding tension control device has the advantages that the accurate control of the tension force during the stretched membrane reeling feeding can be realized, and in addition, the precise control on the feeding length during the lower aligning work of a stretched membrane can be realized.

The invention discloses a novel diaphragm tension control roller which comprises an inner barrel and an outer barrel, wherein the inner barrel and the outer barrel are in mutual rotary connection, theinner barrel and the outer barrel are coaxially arranged, an adsorption space is formed between the outer surface of the inner barrel and the inner surface of the outer barrel, and the adsorption space is used for accommodating a diaphragm; a protection film is at least arranged on the outer surface of the inner barrel and in the adsorption space, the protection film can form an adsorption face,and the diaphragm is arranged on the adsorption face; a plurality of vacuum adsorption holes are formed in the surface of the inner barrel, and the vacuum adsorption holes are used for adsorbing the diaphragm. According to the novel diaphragm tension control roller disclosed by the embodiment of the invention, an adsorption area is increased by improving an amount of the vacuum adsorption holes, the diaphragm can be more stably arranged on the inner barrel, and follow-up operation is more facilitated. Meanwhile, the protection film can prevent the diaphragm from being scratched by the surfaceof the inner barrel in a tensioning or moving process, and the quality of the diaphragm is guaranteed.

The invention provides a guide membrane tension regulating device for a polaroid cutting machine. The guide membrane tension regulating device comprises a tension roller and limiting rollers arranged on the two sides of the tension roller in parallel. The vertical position of the tension roller is regulated through two lifting mechanisms arranged at the two ends of the tension roller. The two ends of each limiting roller are fixedly connected with the cutting machine through mounting boards. According to the guide membrane tension regulating device, the height difference between the limiting rollers and the tension roller is changed to regulate the tension of a guide membrane, collision damage caused by small tension of the guide membrane is greatly reduced, and meanwhile the time for replacing guide membranes again is saved.

The device consists of circuit board, contact and contact block made of material which is attracted to each other as well as base to bear the contact block. The contact is moved above the contact block when the device is used. The contact block is moved up under action of magnetic force and to press against two connection contacts to switch on the line and the line is off when the contact is moved to someother place for from above the contact block because the magnetic force is disappeared and the contact block is fallen down under action self-gravity and plastic membrane tension.

A pre-stressed structure and a method for forming a pre-stressed structure are provided. The pre-stressed structure comprises a panel including a first region pre-stressed into a condition of membrane tension, resulting in the panel having increased transverse stiffness. The pre-stressed structure may further comprise a second region pre-stressed into a condition of membrane compression. The panel may be a plate or a shell and may form part of an insulating glass unit, which in turn may form part of a curtainwall unit.

The invention provides a quantitative characterization method of cell membrane tension, which combines a cell membrane tension model and a cytoplasm viscoelasticity model, and performs quantitative characterization on the cell membrane tension by using an atomic force microscope. The method specifically comprises the following steps: (1) obtaining single cell force relaxation signal data based on an AFM nanoindentation experiment; (2) constructing a cell power relaxation curve equation; and (3) quantitative calculation of cell membrane tension. The detection means for quantitatively detecting the membrane tension of the living cells, provided by the invention, is helpful for people to have further deeper understanding on cell behaviors, and also provides a new view angle and direction for people to carry out early diagnosis, regulation and treatment on various diseases by regulating the physical characteristics of the cells.

The invention is entitled nacelle fan cowl tangential restraint. Systems and methods are provided for an aircraft propulsor (108) with a fan cowl with one or more tangential restraints. The tangentialrestraints may be configured to contact one or more tangential receiving portions of a fixed portion of the aircraft propulsor (108). The fan cowl may receive a load that may include a bending load.The tangential restraints may be configured to convert the bending load to membrane tension and thus decrease deflection of the fan cowl.

The invention relates to reasonable arch axis of an open web deck type arch bridge and a determination method thereof. The determination method comprises the following steps: dividing a dead load of the open web deck type arch bridge into dead weight of a bridge deck system, dead weight of a column and dead weight of a main arch ring; serializing the discrete dead weight of the column to a continuous load in a linear relationship with coordinates of the main arch ring by equivalent membrane tension assumption; serializing a discrete concentrated force transferred to the main arch ring by the bridge deck system to a horizontal uniformly distributed load; and linearly combining three pressure lines of the dead weight of the bridge deck system, the dead weight of the column and the dead weight of the main arch ring according to the proportions of the thrusts in total thrust by analyzing the pressure lines of the dead weight of the bridge deck system, the dead weight of the column and thedead weight of the main arch ring and the thrust of the main arch to obtain the reasonable arch axis of the open web deck type arch bridge. The reasonable arch axis is clear in mechanical concept andsimple in method, and the reasonable arch axis of the open web deck type arch bridge can be determined quickly, so that the workload of bridge designers is reduced greatly. The arch bridge is reasonable in stress and economical in material utilization amount.

A vertical bag forming, filling and packaging machine (1), comprising: a film supply part (5), a film bonding part (31), a longitudinal sealing part (60), a film conveying part (50), a film clamping device (34 ), film tension release part (20), filling part (70), metering part (40), transverse sealing part (80), cutter (80), wherein, described film joint part (31) and film (F) Combined, the longitudinal sealing part (60) forms the film (F) into a tube shape, the film clamping device (34) holds the film (F) at the film joint part (31), and the film tension releasing part (20 ) relaxes the film (F), the filling part (70) throws in the content (X), the metering part (40) measures the content (X), and the transverse sealing part (80) makes the film (F) form The bag (G), the cutter cuts the bag (G).

The invention relates to a membrane tension control induction type compression roller mechanism. The membrane tension control induction type compression roller mechanism comprises a fixed frame, a passive roller and a tension control roller, wherein the fixed frame is defined by an upper cantilever, a lower cantilever and two supports, and the passive roller and the tension control roller are fixed in the fixed frame. The two ends of the passive roller are clamped in rectangular hole grooves through passive roller fixing blocks. A passive shaft height control valve is arranged on the top face of each support, penetrates the corresponding rectangular hole groove through a screw and is in screw joint with the corresponding passive roller fixing block. The right end of the tension control roller is in drive connection with a tension controller, and the left end of the tension control roller is connected with a tension control knob. An upper fixed block is fixed to the front face of the upper cantilever and fixedly provided with the induction end of a membrane position inductor. A lower fixed block is fixed to the front face of the lower cantilever and fixedly provided with the transmitting end of the membrane position inductor. According to the membrane tension control induction type compression roller mechanism, the pressure between the two rollers is adjusted through the passive shaft height control valves, the membrane tension control induction type compression roller mechanism and the tension controller are used in common to adjust conveying tension, and therefore tension control is more accurate, and the problem that conveying is difficult due to the too large or small membrane pulling force is effectively solved.

The invention discloses a high-throughput measurement device and method for single cell membrane tension. The device comprises a micro-fluidic chip module, a pressure control module, a multi-channel image acquisition module and a data analysis and processing module. The micro-fluidic chip module is used for carrying out cell separation and providing a multi-channel single cell measurement environment; the pressure control module is used for providing negative pressure and driving cells to move through the negative pressure; the multi-channel image acquisition module is used for acquiring cellimages; the data analysis and processing module is used for processing the images acquired by the multi-channel image acquisition module to obtain cell deformation; and based on the cell deformation and the pressure intensity of the negative pressure provided by the pressure control module, the tension of the cell membrane is obtained by adopting a single-cell cell membrane tension equivalent mechanical model. The device can effectively realize high-throughput measurement of the cell membrane tension of the single cell.

The invention discloses a hydrophilic interface for holding biological tissues, the hydrophilic interface is composed of a plurality of nano particles, and the liquid membrane tension calculated by the structural parameters of the hydrophilic interface meets the following conditions: the liquid membrane tension is greater than the maximum slipping force for holding the biological tissues and is less than the minimum damage force for holding the biological tissues; by precisely designing structural parameters of the hydrophilic interface, the liquid film tension of the manufactured hydrophilicinterface is precisely controlled between the maximum slipping force and the minimum damage force, so that the liquid membrane tension generated by the hydrophilic interface realizes stable and damage-free clamping and pulling of the interface and human tissues; the technical problem that when an existing surgical instrument clamps biological tissue, tissue damage and slipping are likely to be caused is solved.

The invention discloses a hydrophilic interface manufacturing method and system for holding biological tissues. The method comprises the steps: obtaining the maximum slippage force and the minimum damage force of a biological tissue in advance, and selecting a force value which is greater than the maximum slippage force and is smaller than the minimum damage force as the tension of an optimized liquid film; determining an optimized structure parameter value corresponding to the optimized liquid film tension according to the relationship between the structure parameter of the hydrophilic interface and the liquid film tension, and manufacturing the hydrophilic interface according to the optimized structure parameter value, thereby realizing accurate design of the structure parameter of the hydrophilic interface. The liquid film tension of the manufactured hydrophilic interface is accurately controlled between the maximum slippage force and the minimum damage force, so that the liquid film tension generated by the hydrophilic interface realizes stable and non-damage clamping and pulling of the interface and human tissues, and the technical problems of tissue damage and slippage easilycaused when an existing surgical instrument clamps biological tissues are solved.