39results about How to "Avoid stress failure" patented technology

A heat resistant positive-working photosensitive PBO precursor composition comprising: (a) at least one polybenzoxazole precursor polymer; (a) at least one plasticizer compound; (b) at least one solvent; wherein the amount of the plasticizer present in the composition is an amount effective to reduce the sidewall angle of imaged and cured features in the coated film on the substrate to prevent stress failures in subsequent metallization of the substrate due to steep angles of the imaged features, and with the proviso that if the polybenzoxazole precursor polymer solely consists of polybenzoxazole precursor polymers that do not contain a photoactive moiety on the polymer, then (c) at least one photoactive compound is also present in the composition.

A heat resistant positive-working photosensitive PBO precursor composition comprising:(a) at least one polybenzoxazole precursor polymer;(a) at least one plasticizer compound;(b) at least one solvent;wherein the amount of the plasticizer present in the composition is an amount effective to reduce the sidewall angle of imaged and cured features in the coated film on the substrate to prevent stress failures in subsequent metallization of the substrate due to steep angles of the imaged features, and with the proviso that if the polybenzoxazole precursor polymer solely consists of polybenzoxazole precursor polymers that do not contain a photoactive moiety on the polymer, then(c) at least one photoactive compound is also present in the composition.

A window assembly is disclosed that allows a person to easily clean the exterior side of a windowpane, and prolongs the life of the window assembly. A window assembly (200) according to the present invention comprises a fixed window frame (202), tilt-latch assemblies (1, 2), and upper and lower window sashes (203, 204) comprised of a plurality of window sash rails, wherein each window sash rail has an outer wall (302), a front wall (300), and a rear wall (304). The tilt-latch assemblies (1, 2) secure the upper and lower window sashes (203, 204) within the fixed window frame (202). The tilt-latch assembly (1) is inserted into a slot (301) that is located on the outer wall (302) of the window sash rail for receiving a tilt-latch assembly (1). A lip (314) is located between a corner edge (212), wherein two sash rails meet to form a corner, and the outer edge (310) of the slot (308). The (314) can help prevent stress failure of the window sash rail.

The invention provides an automatic urine catheterization device for pressure measurement. The automatic urine catheterization device comprises a urine catheter connector, a Y-shaped tee joint, a urination connector, a pressure measurement connector, a pressure measurement device, and a plurality of sections of pipes for connecting the urine catheter connector, the Y-shaped tee joint, the urination connector, the pressure measurement connector and the pressure measurement device. The automatic urine catheterization device is characterized in that a one-way valve is arranged in the urine catheter connector, a first control valve, a second control valve and an electromagnetic valve are arranged on near Y-shaped tee joint, the pressure measurement connector is internally provided with a hydrophobic membrane allowing gas to pass through and preventing tissue liquid to pass through, and a liquid measurement device is arranged on the lower end of the pressure measurement connector. The automatic urine catheterization device has the advantages that the urine catheterization device is matched with a urine catheter commonly used clinically, so that the automatic control on urination is realized, and the trouble of artificial nursing on urination is avoided; the one-way valve can effectively prevent the back flowing of urine, so that the urinary tract infection caused by the back flowing of urine is avoided; and the hydrophobic membrane can effectively prevent the urine from flowing back to a pressure sensor.

The invention relates to a building with triangular solar photovoltaic conversion structures, which comprises a solar controller, a storage battery, an inverter, solar panels, transparent building glass, triangular supporting structures and heat insulating materials, wherein the back surfaces of the triangular supporting structures are connected onto a building elevation structure, the solar panels for photovoltaic conversion are installed on the inclined surfaces of the triangular supporting structures, light reflecting plates, arc-shaped light condensing plates, decoration plates or decoration glass plates are installed on the other surfaces of the triangular supporting structures, and the right-angle outward extension surfaces of the triangular supporting structures are the transparent building glass or transparent building doors / windows.

The invention provides a chassis equipment cabin baseplate for a high-speed rail vehicle. The chassis equipment cabin baseplate comprises an outer skin, an inner skin, a middle foam interlayer and a hook, wherein both the outer skin and the inner skin are made of carbon fiber twill fabric and carbon fiber unidirectional fabric and adopt the vacuum injection formation technology; the middle foam interlayer is made of PVC interlayer foam and adopts the vacuum injection formation technology; the PVC interlayer foam comprises a foam body part and an edge part on the edge of the foam body part; the hook is arranged at the common end parts of the outer skin, the inner skin and the middle foam interlayer. The production method of the chassis equipment cabin baseplate is easy to operate, and short in production time; as the outer skin and the inner skin, which are made of carbon fiber composite materials, as well as the middle foam interlayer adopt the vacuum injection formation technology, the chassis equipment cabin baseplate has the advantages that the surface is smooth and flat, the assembly parts are less, the assembly cost as well as the assembly time is greatly reduced, and routine maintenance is easy.

The present invention discloses surface bionic protection method of stone material and lithical cultural relic. The protection method includes cleaning the surface with detergent comprising deionized water or organic solvent, treating the surface with biological amphibpatic functional pre-treating liquid, and crystallizing supersaturated calcium oxalate solution on the surface to form fine and compact surface protecting calcium oxalate film. The present invention has the advantages of wide applicable range, excellent compatibility to stone material, high weather resistance, raised corrosion resistance, improved hydrophobicity, firm combination with base stone material and no influence on the outer appearance, color and hand feeling of original stone material.

The invention belongs to the technical field of solar thermal utilization, and particularly discloses a groove type condensation solar heat collecting tube with a compensation sealing structure. The groove type condensation solar heat collecting tube is provided with a coated stainless steel tube, a coated borosilicate glass tube is sleeved on the outside of the coated stainless steel tube, stainless steel seal heads are sleeved at both ends of the coated stainless steel tube, and the outer wall of the coated stainless steel tube is hermetically connected with the stainless steel seal heads; the coated borosilicate glass tube is slidably connected with the stainless steel seal heads; high-temperature-resistant silicon rubber compensation sleeves are sleeved on the stainless steel seal heads, and two ends of each high-temperature-resistant silicon rubber compensation sleeve are respectively hermetically connected with the coated borosilicate glass tube and the corresponding stainless steel seal head; and heat-insulation vacuum chambers are disposed among the coated stainless steel tube, the coated borosilicate glass tube and the stainless steel seal heads. The heat collecting tube is provided with the high-temperature-resistant silicon rubber compensation sleeves with cheap prices, stress destruction can be avoided, components of the heat collecting tube are welded and hermetically sealed, and accordingly the groove type condensation solar heat collecting tube is high in reliability and structural tension resistance and fine in heat-insulation performance. In addition, welding operation is seldom carried out in assembling process, yield of finished products is high, the process is simple, and labor cost is low.

The invention discloses a propeller power meter for a cavitation tunnel and relates to the field of a propeller hydrodynamic measuring device. A transmission system of the power meter is fixed on a cylinder body by a single-arm support frame and a double-arm support frame. An input shaft is in a thrust bearing set and is connected to the transmission system through a coupling. The thrust bearing set is connected to an opening cylinder section which is threadingly connected to a shaft sleeve of the transmission system. Two ends of a thrust torque sensor are connected to the input shaft and a paddle shaft, a signal input line of the thrust torque sensor passes through a hollow portion of the input shaft, is transferred through a slip ring, then goes out of the sealing ring and is connected to a signal output line in a watertight junction box. An end of the paddle shaft is supported by a water-lubricated bearing in a sealing sleeve. A contraction section is connected to a thrust bearing set and an end sealing sleeve through threads. The space where the thrust torque sensor is located is watertight and communicates with the atmosphere. The effects of small interference to a flow fieldand convenient disassembly and assembly of the paddle shaft are achieved.

An embedded coupling between the pushing ship driven by engine and the barge features that the main recess on the central axis of barge has two embedding recesses, said pushing ship has three convex parts respectively positioned on its central axis and both sides, said convex part is pivoted with the push rod of hydraulic power unit, and the cylinder of said hydraulic power unit is fixed to said pushing ship.

The use of type V phosphodiesterase inhibitors as a novel independent therapeutic modality in the treatment of exercise induced pulmonary hemorrhage in equine is described. The type V phosphodiesterase inhibitor is injected into the horse intravenously as a stand-alone agent from about one-half hour to about seven (7) days prior to the onset of strenuous exercise.

The invention provides a composite self-heating reflecting layer energy-gathered semiconductor ignition bridge which is formed by sequentially superposing a substrate layer, an insulating layer, a reflecting layer, a semiconductor bridge layer, a discrete tin soldering layer and a discrete electrode layer from top to bottom, wherein the substrate layer is composed of rectangular semiconductor silicon; the insulating layer is composed of silica with the same size as the substrate layer and covers the substrate layer; the reflecting layer is made of monocrystalline silicon diffused and doped with heavily boron (or phosphorus), the size of the reflecting layer is the same as that of the substrate layer, and the reflecting layer is deposited on the insulating layer; the semiconductor bridge layer is composed of polycrystalline silicon subjected to heavily boron (or phosphorus) injection doping, and the shape of the semiconductor bridge layer is wide in two ends and narrow in middle; the tin soldering layer is respectively coated on each of two ends of the semiconductor bridge layer; and the electrode layer is directly bonded to the tin soldering layer at a high temperature. The semiconductor ignition bridge disclosed by the invention has the functions of high electric energy utilization rate, high ignition output and high ignition instantaneity.

The invention relates to a sound barrier panel device for disorganizing the high speed train running wind energy. The whole structure is formed by a sheet steel in a stress arc shape, a sheet steel in a disorganized small arc shape and a sheet steel in a stream guidance arc shape. High speed train running wind acts on a whole concave face, the concave face is formed by continuous convex-concave arc surfaces with different curvature radii, the acting force of the running wind can be disorganized to the greatest degree, then diffracted rays at the top of a sound barrier are made to be of a sheet steel arc structure, suddenly-changed propagating geometric routes of the running wind are avoided, meanwhile, vibration of the diffraction sheet steel arc structure and an air layer at the back is caused by the running wind, and energy of the running wind and energy of noise are further disorganized.

The invention discloses a material with a waterborne discoloring and luminous function, road marking with the waterborne discoloring and luminous function and a construction method of the road marking. The road marking with the waterborne discoloring and luminous function comprises a transparent layer and a waterborne discoloring and luminous function layer, the transparent layer is arranged on the waterborne discoloring and luminous function layer, the transparent layer plays the permeable, anti-skid and wear-resistant the roles and is used as a structural layer being directly contact with anatmosphere, scouring of rainwater to the function layer can be effectively slowed down, and the waterborne discoloring and luminous function layer is prevented from being subjected to scouring of rainfall and stress damaging of outer tires. The material with the waterborne discoloring and luminous function is used in the waterborne discoloring and luminous function layer, the waterborne discoloring and luminous function layer displays white during drying, in a normal state, the road marking is a usual state, and the marking presents white; in rainy days, the material changes into a glass sandcolor from the white under the condition of insufficient light, and the identification degree of the road traffic marking is effectively enhanced; and at night, the road marking has the night luminous performance, and the guide effect function of the road marking can be effectively improved.

The invention belongs to the technical field of solar thermal utilization, and particularly discloses a groove type condensation solar heat collecting tube with a compensation sealing structure. The groove type condensation solar heat collecting tube is provided with a coated stainless steel tube, a coated borosilicate glass tube is sleeved on the outside of the coated stainless steel tube, stainless steel seal heads are sleeved at both ends of the coated stainless steel tube, and the outer wall of the coated stainless steel tube is hermetically connected with the stainless steel seal heads; the coated borosilicate glass tube is slidably connected with the stainless steel seal heads; high-temperature-resistant silicon rubber compensation sleeves are sleeved on the stainless steel seal heads, and two ends of each high-temperature-resistant silicon rubber compensation sleeve are respectively hermetically connected with the coated borosilicate glass tube and the corresponding stainless steel seal head; and heat-insulation vacuum chambers are disposed among the coated stainless steel tube, the coated borosilicate glass tube and the stainless steel seal heads. The heat collecting tube is provided with the high-temperature-resistant silicon rubber compensation sleeves with cheap prices, stress destruction can be avoided, components of the heat collecting tube are welded and hermetically sealed, and accordingly the groove type condensation solar heat collecting tube is high in reliability and structural tension resistance and fine in heat-insulation performance. In addition, welding operation is seldom carried out in assembling process, yield of finished products is high, the process is simple, and labor cost is low.

The invention relates to a mask slice graphic structure and a manufacturing method of a semiconductor chip. The mask slice graphic structure comprises chip unit graphs, adjacent chip unit graphs are separated from each other by a cutting channel graph, the cutting channel graph comprises an etching band graph and vacant areas arranged at the two sides of the etching band graph, and the etching band graph and the vacant areas are arranged along the width direction of the cutting channel graph; and the mask slice graphic structure also comprises multiple process detecting areas which are arranged in the surrounding of at least one chip unit graph and a test button area which is arranged in the chip unit graph. Compared with the prior art, DRIE technology, basically instead of an electric saw, can be utilized to cut the chip, wearing of the electric saw during packaging cutting is reduced and even avoided, and waste of chips is reduced as possible.

The invention provides a steel jacket steel bent pipe dewatering structure for connecting direct burial and overhead steam pipes. The structure comprises a diameter expansion stand pipe part, a diameter expansion dewatering part, a dewatering long bent pipe and a reducing pipe, wherein a stand pipe of an L-shaped diameter expansion outer protecting pipe and a long arm bent pipe arranged in the stand pipe form a steel jacket steel structure; a rainproof cap is arranged in the connected position of the ground of the long arm bent pipe with an overhead section; a direct burial pipe of the L-shaped diameter expansion outer protecting pipe and a working pipe arranged in the direct burial pipe form a steel jacket steel structure; the diameter expansion stand pipe part and the diameter expansiondewatering part are connected in an equal-diameter manner; the dewatering long bent pipe consists of a large-curvature long arm dewatering pipe and a support limiting ring; and the reducing pipe is used for connecting the diameter expansion dewatering part with a standard caliber outer protecting pipe. The structure is reasonable in design, reduces the mounting investment, improves the mounting efficiency, maximizes natural compensation effect on a Z-shaped bent pipe, and solves the problems of thermal expansion displacement, low-frequency vibration and the like in a long dewatering pipe.

The invention relates to the field of corrugated pipes, in particular to a rebar reinforced polypropylene corrugated pipe and a manufacturing method thereof. The corrugated pipe comprises an outer layer, a reinforced layer and a plastic coated rebar layer; the outer layer comprises outer-layer wave peaks and outer-layer wave valleys; the sectional area of the plastic coated rebar layer is 14-16% of the sectional area of the reinforced layer; and the plastic coated rebar layer is in a spiral shape, the reinforced layer is provided with a containing cavity, and the plastic coated rebar layer comprises rebars and a plastic coated layer. According to the rebar reinforced polypropylene corrugated pipe and the manufacturing method thereof, the outer-layer wave peaks of the corrugated pipe are internally provided with solid wave peak reinforced layers, and the reinforced layer is internally provided with a plastic coated rebar layer; thus, the corrugated pipe has more excellent compressive strength, in addition, the rebars and polypropylene plastic jointly achieve the reinforcing effect, the pipe is free of stress concentration points and is more uniformly stressed, and the service life is greatly prolonged; and according to the manufacturing method, the technology is stable and simple, the production speed is high, moreover, the welding strength is high, and the quality is stable.

A one-piece, cast traction pin for use with railway cars. The traction pin is used to connect the railcar cab with the railcar truck assembly. The traction pin includes a mounting plate cast integral with the pin, thereby eliminating the use of multiple welded plates. The one-piece cast traction pin is also solid to reduce the potential for stress related failure of the traction pin during normal operation of the railway car.

The invention discloses a butt strap structure construction method for bridgehead bumping. The butt strap structure construction method is characterized by comprising the following construction stepsof: (1) constructing cement mixing piles; (2) excavating a surface soil body of the concrete butt strap part; (3) implanting longitudinal drainage plates and water stop plates into the soil body; (4)paving a sandstone cushion layer at the part where transverse drainage plates is placed, and tamping the sandstone cushion layer; (5) inserting the transverse drainage plates into the grooves of the longitudinal drainage plates and the water stop plates; (6) drilling a water pumping holes in the left sides of the longitudinal drainage plates; (7) communicating the steel bars buried in the longitudinal drainage plates with a cathode of a power source, meanwhile, communicating the steel bars buried in the water stop plates with an anode of the power source, and pumping water synchronously through water pumping holes; (8) laying light filler on the transverse drainage plates, and arranging geotechnical cloth on the light filler; (9) inserting a dowel bar into the groove of a pavement slab; and (10) filling the deformation joint with hemp threads, and then laying a steel cover plate at the top of the deformation joint.

The invention provides an automatic urine catheterization device for pressure measurement. The automatic urine catheterization device comprises a urine catheter connector, a Y-shaped tee joint, a urination connector, a pressure measurement connector, a pressure measurement device, and a plurality of sections of pipes for connecting the urine catheter connector, the Y-shaped tee joint, the urination connector, the pressure measurement connector and the pressure measurement device. The automatic urine catheterization device is characterized in that a one-way valve is arranged in the urine catheter connector, a first control valve, a second control valve and an electromagnetic valve are arranged on near Y-shaped tee joint, the pressure measurement connector is internally provided with a hydrophobic membrane allowing gas to pass through and preventing tissue liquid to pass through, and a liquid measurement device is arranged on the lower end of the pressure measurement connector. The automatic urine catheterization device has the advantages that the urine catheterization device is matched with a urine catheter commonly used clinically, so that the automatic control on urination is realized, and the trouble of artificial nursing on urination is avoided; the one-way valve can effectively prevent the back flowing of urine, so that the urinary tract infection caused by the back flowing of urine is avoided; and the hydrophobic membrane can effectively prevent the urine from flowing back to a pressure sensor.

The invention discloses a shaker with the ratio adjustable based on artificial intelligence, and relates to the technical field of shakers. The shaker comprises a cup body, an antiskid rubber mat is fixedly connected to the outer surface of the cup body, a miniature display screen is fixedly connected to the front surface of the antiskid rubber mat, a cup nozzle is fixedly connected to the top ofthe cup body, a cup lid is in threaded connection to the outer surface of the cup nozzle, a screwing ring is fixedly connected to the outer surface of the bottom of the cup lid, an alcohol concentration detection strip is fixedly connected to the inner surface of the cup body through a fixing block, and an information processing shell is fixedly connected to the portion, located at the bottom of the miniature display screen, of the outer surface of the cup body. According to the shaker with the ratio adjustable based on artificial intelligence, as the alcohol concentration detection strip andinstruments in the information processing shell are matched with each other, a mixer can plan the mixing ratio through the miniature display screen on the outer surface of the shaker, judgment of mixed wine liquid is more accurate, and the mixer can mix high-quality good wine more easily.

The invention discloses a propeller power meter for a cavitation tunnel and relates to the field of a propeller hydrodynamic measuring device. A transmission system of the power meter is fixed on a cylinder body by a single-arm support frame and a double-arm support frame. An input shaft is in a thrust bearing set and is connected to the transmission system through a coupling. The thrust bearing set is connected to an opening cylinder section which is threadingly connected to a shaft sleeve of the transmission system. Two ends of a thrust torque sensor are connected to the input shaft and a paddle shaft, a signal input line of the thrust torque sensor passes through a hollow portion of the input shaft, is transferred through a slip ring, then goes out of the sealing ring and is connected to a signal output line in a watertight junction box. An end of the paddle shaft is supported by a water-lubricated bearing in a sealing sleeve. A contraction section is connected to a thrust bearing set and an end sealing sleeve through threads. The space where the thrust torque sensor is located is watertight and communicates with the atmosphere. The effects of small interference to a flow fieldand convenient disassembly and assembly of the paddle shaft are achieved.

The invention relates to the technical field of automobile fittings, in particular to an improved shock absorber, which comprises an oil storage cylinder, an outer cylinder, a working cylinder, a compression valve, a piston device, a piston rod, a guider, a protecting cover and an oil seal, wherein the piston device comprises a piston with an accommodating cavity, and a connecting shaft is arranged in the accommodating cavity; a first elastic gasket is arranged on an outer sleeve of the connecting shaft; a second elastic gasket is arranged between the first elastic gasket and the compression valve; a spring is arranged between the first elastic gasket and the second elastic gasket; the outer cylinder is connected with a bottom side fixing device; and the oil storage cylinder is externally connected with a middle side fixing device. According to the invention, with the first elastic gasket, the spring and the second elastic gasket between the compression valve and the piston, mutual wear between the piston and the compression valve is avoided, and two ends of the shock absorber is protected from failure caused by compression. Besides, the outer cylinder and the oil storage cylinder are respectively connected with the bottom side fixing device and the middle side fixing device; and when being mounted, the shock absorber can be positioned through the bottom side fixing device and the middle side fixing device, so that the mounting is convenient.

The invention provides an externally-hung connecting device for prefabricated wallboard installation and a prefabricated wallboard installation method. The externally-hung connecting device comprisesan upper connecting assembly and a lower connecting assembly. The upper connecting assembly comprises a first anchor plate, a first threaded connecting rod, a first L-shaped connecting plate fixedly connected with a lower flange of an upper steel frame beam, a first heat insulation base plate and a first fixing nut. The first threaded connecting rod penetrates through the first L-shaped connectingplate and the first heat insulation base plate to be connected with a first fixing nut. The lower connecting assembly comprises a second anchor plate, a second threaded connecting rod, a second L-shaped connecting plate fixedly connected with a floor slab steel bar, a second heat insulation base plate and a second fixing nut. The second threaded connecting rod penetrates through the second L-shaped connecting plate and the second heat insulation base plate to be connected with the second fixing nut. The externally-hung connecting device can safely and reliably achieve fixed installation of aprefabricated wallboard, can achieve rapid installation on the premise that production standardization of the prefabricated wallboard is achieved, reduces the workload of construction site operation,and improves the construction efficiency and the installation quality.

The invention relates to a steel structure connecting device which is easy to assemble and disassemble. It includes a metal plug-in board, the left and right side panels of the metal plug-in boards arranged at intervals for welding, and a "T"-shaped connecting board, and the bottom plate connection of the "T"-shaped connecting board is fixed on the left side Between the panel and the right panel, the protruding part of the middle plate of the "T"-shaped connecting plate protruding from the left and right panels is vertically inserted into the middle plate of the "mountain"-shaped frame, and in the "T" shape There are two horizontal slots on the protruding part of the connecting plate for bolt sliding connection, and a cover plate is welded on the top of the "mountain"-shaped frame, and there are two corresponding to the horizontal slots on the cover plate. Transverse slot 2, the screw rods of the two bolts are inserted through the horizontal slot 2 and the horizontal slot 1 in turn, and then slide forward to be in place and locked by nuts. After adopting the structure of the present invention, the front and rear steel crossbeams are butted through the front metal column hanger and the "mountain" shaped frame.