59 results about "Long term stress" patented technology

A high strength Al-Mg alloy in plate or extrusion form having significantly improved strength in both soft and work-hardened tempers as compared with AA5083 is provided. The materials have ductility, pitting, stress and exfoliation corrosion resistances equivalent to those of the AA5083. The materials have improved long term stress and exfoliation corrosion resistances at temperatures above 80° C. The composition is 5-6% Mg, >0.6-1.2% Mn, 0.4-1.5% Zn, 0.05-0.25% Zr, up to 0.3% Cr, up to 0.2% Ti, up to 0.5% each Fe and Si, up to 0.4% each Cu and Ag, remainder Al and inevitable impurities. Manufacture of plate of this alloy is by homogenizing an ingot, hot rolling the ingot into plate in the range 400-530° C., cold rolling the plate with or without inter-annealing, final and optionally inter-annealing of the cold rolled material at temperatures in the range 200-550° C.

A high strength Al-Mg alloy in plate or extrusion form having significantly improved strength in both soft and work-hardened tempers as compared with AA5083 is provided. The materials have ductility, pitting, stress and exfoliation corrosion resistances equivalent to those of the AA5083. The materials have improved long term stress and exfoliation corrosion resistances at temperatures above 80° C. The composition is 5-6% Mg, >0.6-1.2% Mn, 0.4-1.5% Zn, 0.05-0.25% Zr, up to 0.3% Cr, up to 0.2% Ti, up to 0.5% each Fe and Si, up to 0.4% each Cu and Ag, remainder Al and inevitable impurities. Manufacture of plate of this alloy is by homogenizing an ingot, hot rolling the ingot into plate in the range 400-530° C., cold rolling the plate with or without inter-annealing, final and optionally inter-annealing of the cold rolled material at temperatures in the range 200-550° C.

The invention relates to a segmental prosthesis for a human body long bone diaphysis position and belongs to the technical field of prosthesises. In order to solve the technical problem of fast responding to the patient requirements, the segmental prosthesis with good stability and installation convenience is provided. The segmental prosthesis is characterized in that one end of a first tumor prosthesis and one end of a second tumor prosthesis are respectively provided with an intramedullary prosthesis handle, the other end of the first tumor prosthesis and the other end of the second tumor prosthesis are respectively provided with a blind hole with a clamp groove and / or a conical pin with a bayonet, the mutual connecting parts of the first and second tumor prosthesises are placed into the blind holes through the conical pins to realize the insertion connection, the conicity of internal cones passing by the blind holes is matched and anastomotic with the conicity of external cones of the conical pins, the bayonets and the clamp grooves are mutually embedded and connected into a whole, a middle segment prosthesis can be also added between the first tumor prosthesis and the second tumor prosthesis, and the three-segment connection is realized by the same method of inserting the conical pins into the blind holes. The segmental prosthesis has the advantages that the middle segment prosthesis can be prefabricated into different specification for standby use, the structure is simple, the installation is convenient, the stability is good, and the looseness due to long-term stress cannot easily occur.

The present invention relates to a stress-measuring device (10) and method for determining a level (15) of stress of a user (1), in particular long-term stress. The stress-measuring device (10) comprises an input interface (12) for receiving a skin conductance signal (11) indicating the skin conductance of the user (1), the skin conductance signal (11) over time forming skin conductance trace data (13). The stress-measuring device (10) further comprises a processing unit (14) for processing the skin conductance trace data (13), the processing unit (14) adapted to determine, over at least a portion of the skin conductance trace data (13), values of a rise time (tr) between at least two different points of the skin conductance trace data (13), to determine a frequency distribution of the rise time (tr) values, and to determine the level (15) of stress of the user (1) based on the determined frequency distribution.

The invention relates to a standing and lying type wheelchair with a turnover function. A foot supporting mechanism is rotationally connected with a cushion frame and a wheelchair frame; the cushion frame is placed on the wheelchair frame through rollers; a turnover mechanism is arranged on the cushion frame; the cushion frame is rotationally connected with a left backrest frame and a right backrest frame; a running mechanism, the turnover mechanism, a standing mechanism and a lying mechanism are connected with a control structure respectively, so that turnover, standing, lying and universal running control are achieved. A lying function is achieved through the cooperation of two motors of a back raising mechanism and the foot supporting mechanism, and a single back raising function can be achieved by individually operating one motor; moreover, anti-tilting wheels are mounted behind rear driving wheels, and front anti-tilting wheels are additionally arranged at the lower part of a foot supporting frame in front of small universal wheels, so that the functionality and the safety of the wheelchair are improved. The turnover function is combined to the standing and lying type wheelchair, an automatic timing turnover function is achieved by the simultaneous overturning of a single backrest and a cushion, the long-term stress on the hip and the back of a bedridden patient is relieved in an assisting way, the occurrence probability of bedsore is reduced, and the burden on a nurse is reduced.

A stress-measuring device (10) and method determines a level (15) of stress of a user (1), in particular long-term stress. The stress-measuring device (10) includes an input interface (12) for receiving a skin conductance signal (11) indicating the skin conductance of the user (1), the skin conductance signal (11) over time forming skin conductance trace data (13). The stress-measuring device (10) further includes a processing unit (14) for processing the skin conductance trace data (13). The processing unit (14) determines, over at least a portion of the skin conductance trace data (13), values of a rise time (tr) between at least two different points of the skin conductance trace data (13), a frequency distribution of the rise time (tr) values, and the level (15) of stress of the user (1) based on the determined frequency distribution.

The invention discloses a creep-resistant polypropylene composite material which is prepared from the following components in parts by weight: 23-96.8 parts of polypropylene, 1-30 parts of glass fibers, 1-20 parts of diisopropylbenzene peroxide, 1-5 parts of polypropylene grafted with maleic anhydride, 0.1-1 part of an antioxidant, 0.1-1 part of a lubricant and 0-20 parts of a filler. With the addition of the glass fibers and the filler in the material, the rigidity of the material can be provided; with addition of diisopropylbenzene peroxide, the polypropylene material can be partially cross-linked, and the creep resistance of the polypropylene material is greatly improved. The material still maintains small deformation degree under long-term stress.

The invention relates to the field of pressure measurement, in particular to a pressure measurement system with a photo-elasticity pressure sensor. The pressure measurement system comprises the photo-elasticity pressure sensor and a data collection operation platform opposite to the photo-elasticity pressure sensor in position. The distance between the photo-elasticity pressure sensor and the data collection platform is adjustable. The photo-elasticity pressure sensor comprises an external circular ring, a curved-surface cushioning bock and a test piece, wherein the curved-surface cushioning block and the test piece are arranged inside the circular ring. A cambered surface protruding block bent downwards is arranged on the upper portion of the inner side of the circular ring, the lower portion of the inner side of the circular ring is a platform, the curved-surface cushioning block is located on the upper portion inside the circular ring, the test piece is located on the lower portion inside the circular ring, and the curved-surface cushioning block and the test piece are located on the vertical symmetry axis of the circular ring. The photo-elasticity material test piece serves as a core component, in this way, influences from the environment are small, long-term stress monitoring can be performed, the core component can be replaced, and then the range of the sensor is changeable.

The invention discloses an aging testing method of shield tunnel elastic sealing gasket finished products. A high-temperature aging box is used for experimentally simulating the long-term stress relaxation of a seal gasket; the stress relaxation rate of the seal gasket is calculated according to the contact stress measured by a high-temperature stress meter. The aging testing method comprises the following steps: a fixture clamps the seal gasket to perform a stress relaxation experiment at normal temperature so as to obtain a short-term stress relaxation coefficient; an aging experiment is performed at different temperature points so as to measure the contact stress at the key time point; the stress relaxation data of the seal gasket under the open amount state of each joint are regressed; the long-term stress relaxation rate for reflecting the chemical stress relaxation is calculated; the short-term stress relaxation rate multiplies the long-term stress relaxation rate to reflect the aging degree of the seal gasket. According to the invention, the ageing of the seal gasket is accelerated by the high-temperature aging box, and the stress attenuation rate of the seal gasket at normal temperature can be obtained by numerical value simulation, so that the experiment time is shortened, and the accuracy of the experiment result is also increased. The stress relaxation rate is considered by utilizing the contact stress of the seal gasket, and is relatively accurate and effective.

The present invention relates to silicone rubber compositions and long-term-stress-resistant silicone elastomers obtained therefrom, which have excellent resistance to long-term dynamic mechanical stresses, and to their use.

The invention discloses an artificial breeding box and a method thereof for breeding ricefield eels with the breeding box. The breeding box comprises a net box with breeding space. A nest body is arranged in the net box and provided with multiple nests allowing ricefield eels to go through. The front ends and the back ends of the nests communicate with the nest body. The front end of the nest body is provided with a gap as a feeding port. Front-end space used for communicating front ends of the nests is arranged between the front end of the nest body and the net wall of the net box. Back-end space for communicating back ends of the nests is arranged between the back end of the nest body and the net wall of the net box. The artificial breeding box for ricefield eels is simple in structure and low in manufacture cost. The breeding method utilizes the breeding box to breed ricefield eels such that independent nests are obtained. Harm caused by attacks of ricefield eels for better survival space is avoided and energy consumption induced by long-term stress reaction due to competition is avoided. Artificial breeding of ricefield eels is conveniently carried out.

The invention provides a supporting leg and a universal wheel for heavy equipment, which relate to the design and innovation of supporting and transporting components of the heavy equipment. A multi-ball type universal wheel is fabricated by evenly distributing a plurality of ball roller wheels on the same circumference of the same wheel disc; a spiral type supporting leg is arranged in the middle of the multi-ball type universal wheel; a layer of thick high-performance damping cushion is arranged above the multi-ball type universal wheel and is fixed under an equipment bracket by a plurality of symmetrically-distributed bolt washers. When extending out, the spiral type supporting leg replaces the multi-ball type universal wheel to play a role in supporting; and when the spiral type supporting leg retracts, the multi-ball type universal wheel restores the transporting function. The problems that the universal wheel has a large size, is easy to deform due to long-term stress, cannot adjust the height and the level of the equipment and the like are solved. The high-performance damping cushion can effectively absorb vibrations when the equipment runs, and can further reduce uneven stresses and vibrations of the roller wheels caused by uneven ground surface when the equipment is used for transportation. Thus the high-performance damping cushion is a caster wheel component with comparatively complete functions for the heave equipment.

The invention provides a TE mode dielectric resonator device. A limiting groove is arranged at the bottom of a cavity; the surface and the underside of a TE01 mode dielectric resonance rod are each provided with a clamping groove; an upper support base and a lower support base are respectively clamped on the clamping groove; the lower support base is clamped in the limiting groove; the top of the upper support base and the top of the cavity are horizontally collinear; a cover plate comprises an inner cover plate and an outer cover plate; a groove is arranged at the bottom of the outer cover plate; an elastic body is arranged in the groove; and the outer cover plate is installed on the inner cover plate through a connecting part. By being supported by the upper and lower support bases, a TE01 mode dielectric resonator is stressed uniformly; the long-term stressed disadvantage of the traditional TE01 mode dielectric resonator while being installed laterally and installed reversely can be solved; due to support through the upper and lower support bases, heat generated by the TE01 mode dielectric resonance rod can be effectively transferred to the cavity and the cover plate, such that heat dissipation of the cavity body is easily carried; and in addition, due to improvement of the cover plate, the problem that the cavity and a TE01 mode medium are in poor contact due to the machining tolerance can be solved.

The invention discloses use of corilagin in preparation of anti-myocardial fibrosis medicines, belonging to the technical field of biological medicine. By constructing an in-vivo myocardial fibrosis model induced by a mouse aortic ligation operation and an in-vitro myocardial fibrosis model of transforming growth factor (TGF)-beta-induced rat suckling CFs for performing experimental study, the results show that the corilagin can regulate macrophage polarization so as to inhibit inflammation, also can down-regulate an interleukin-4 (IL-4) receptor so as to avoid excessive production of TGF-beta, and inhibits the expression of a TGF-beta receptor so as to reduce the activation of cardiac fibroblasts, thereby reducing collagen content and relieving myocardial fibrosis. The corilagin providedby the invention can reduce the myocardial fibrosis caused by long-term stress load, protect heart tissues and inhibit or delay deterioration of heart functions; the corilagin has a significant effectin the aspect of anti-myocardial fibrosis, is little in side effects, and can be used for preparing the anti-myocardial fibrosis medicines.

The invention relates to a signal transfer board outside a square cabin of equipment. The signal transfer board outside the square cabin of the equipment comprises a mounting framework capable of being firmly connected with the square cabin, a connector mounting plate and an electric connector; the connector mounting plate is integrally stamped with the mounting framework, the upper and lower ends of the connector mounting plate are integrally connected with the corresponding parts of the mounting framework, the electric connector is through fixed on the connector mounting plate, the longitudinal section of the connector mounting plate is ladder-shaped, an acute angle is formed between the first ladder surface of the upper end of the connector mounting plate and the prolonged surface of the framework surface of the upper end of the adjacent mounting frame, and the electric connector is through fixed on the ladder surface below the connector mounting plate. The signal transfer board outside the square cabin of the equipment solves the problems that a connecting cable on an existing signal transfer board is easy to cause bad signal contact due to long-term stress, and a worker is inconvenient to assemble and disassemble the cable; the service life of the product is prolonged, and the use performance of the product is improved.

The invention discloses an oral medicament or health care food for treating melancholia with acting mechanism after being made into multiple-target drone receptor with raw materials of ginsenoside (Rg1+Rb1), glycyrrhizic acid and Chinese date cAMP. According to the experiment to prove, the medicament composition of the invention can obviously reduce the small mouse suspension tail dead time and body temperature descend induced by reserpine; obviously improve the rat horizontal and vertical movement increase and rat learning and memory function abatement caused by buibus olfactorius damage; meanwhile can improve saccharose drinking water amount decrease and body weight descend caused by unpredictable long term stress stimulus, can improve the rat horizontal and vertical movement decrease and obvious increase of the NE and 5-HT content in the rat cerebral cortex caused by unpredictable long term stress stimulus. The experiment result proves that the medicament has remarkable anti-melancholia efficacy, comparing to the current medicament Paroxetine for treating the melancholia in prior art.

The invention discloses an adjustable device for testing self-balancing long-term stressed wood columns. The device comprises at least three parallel threaded rods, wherein the threaded rods are movably sleeved by a first steel plate, a second steel plate, a third steel plate, a fourth steel plate and a fifth steel plate from top to bottom in sequence; the upper side of the first steel plate on the threaded rods is provided with upper positioning bolts; the lower side of the fifth steel plate on the threaded rods is provided with lower positioning bolts; the lower side of the fourth steel plate on the threaded rods is provided with locking bolts; a pressure sensor is arranged between the second steel plate and the third steel plate; a spring is arranged between the third steel plate and the fourth steel plate; a hydraulic oil cylinder is arranged between the fourth steel plate and the fifth steel plate; the lower side of the first steel plate is provided with an upper cutter hinge mechanism; the upper side of the second steel plate is provided with a lower cutter hinge mechanism; and a wood-column mounting space is left between the upper cutter hinge mechanism and the lower cutter hinge mechanism. The device disclosed by the invention solves the problem that the vertical pressure can not be applied to the full-size wood columns for a long time, and the device is easy to assemble and disassemble and is specially used for testing the long-term stressed wood columns.

A board game is provided on the subject of stress education, stress management and stress reduction to be played by a plurality of players. A plurality of cards, each said card having imprinted thereon a suggestion for either a physical or mental exercise that has either an instant, and / or long term stress reducing effect. Explanations are included as to why the activities reduce stress, and questions are raised on the subject to reflect on, or to discuss with your fellow players. Methods to use the board game are included.

The present invention relates to silicone rubber compositions and long-term-stress-resistant silicone elastomers obtained therefrom, which have excellent resistance to long-term dynamic mechanical stresses, and to their use.

The invention relates to a solidifying agent for stabilizing heavy metal Zn in soil and a using method thereof, and belongs to the technical field of environmental engineering. The solidifying agent for stabilizing the heavy metal Zn in the soil and the using method thereof are provided for aiming at the problems that according to solidification stabilization methods in the prior art, the amount of a solidifying agent is too large, cracking of a solidified body may be caused due to the effect of a long-term stress load and wet and dry cycle to accelerate leaching of heavy metal ions in the solid, and the environmental risk is high. First, a natural plant part with heavy metal Zn attraction effect is fermented for extraction of useful components, then carbonized bamboo particles are used as a carrier for adsorption of fermentation extract, and finally, the fermentation extract is mixed with vermiculite and other materials for preparation of the solidifying agent for stabilizing the heavy metal Zn in the soil for use. The solidifying agent is stable in Zn metal solidification, may not seep out, and has no harm to the environment.

The present invention discloses a Ten-channel organic material automatic stress / strain loading and monitoring device. The device comprises a main frame, wherein the main frame is used for carrying stress loading, and includes a support box, a support frame and an upper cover body, the support box is provided with a loading station, which is arranged in two rows, with each row arranged with five loading shafts; and a fixture is installed on the loading shaft, a servo motor system is connected to the fixture, the servo motor system includes a reducer, an electric cylinder, a servo motor, a forcesensor and a fixture connecting rod sequentially from top to bottom, and the fixture connecting rod is fixedly connected to the fixture. The device can simultaneously perform independent control andloading of 10 test pieces at one time, realize real-time monitoring of stress and strain at the same time, provides an efficient and reliable technical means for evaluation of service behavior of organic materials under long-term stress loading conditions.

The invention relates to a detection system and method, belonging to the field of stress monitoring of coal mine working faces, in particular to a real-time detection system and method of coal mine working faces based on a belt conveyor. The system and method use the belt conveyor installed in the Yunshun Lane of the working face as the source of vibration, and the seismometers are arranged in the Yunshun Lane and the return air lane on the other side of the working face, and the signal is obtained by recording the vibration for a certain period of time. For the seismic shot set with high noise ratio, the velocity distribution CT of the working face is obtained through tomographic processing, and the CT of the working face of each time period is connected to form a "cloud image" that changes with time, and the abnormal area of ​​stress adjustment can be found. Send an early warning signal. Therefore, the system and method can realize long-term real-time stress scanning of the whole working face.

The invention relates to a standing and lying type wheelchair with a turnover function. A foot supporting mechanism is rotationally connected with a cushion frame and a wheelchair frame; the cushion frame is placed on the wheelchair frame through rollers; a turnover mechanism is arranged on the cushion frame; the cushion frame is rotationally connected with a left backrest frame and a right backrest frame; a running mechanism, the turnover mechanism, a standing mechanism and a lying mechanism are connected with a control structure respectively, so that turnover, standing, lying and universal running control are achieved. A lying function is achieved through the cooperation of two motors of a back raising mechanism and the foot supporting mechanism, and a single back raising function can be achieved by individually operating one motor; moreover, anti-tilting wheels are mounted behind rear driving wheels, and front anti-tilting wheels are additionally arranged at the lower part of a foot supporting frame in front of small universal wheels, so that the functionality and the safety of the wheelchair are improved. The turnover function is combined to the standing and lying type wheelchair, an automatic timing turnover function is achieved by the simultaneous overturning of a single backrest and a cushion, the long-term stress on the hip and the back of a bedridden patient is relieved in an assisting way, the occurrence probability of bedsore is reduced, and the burden on a nurse is reduced.

The invention relates to a portal frame for avoiding-free stereo parking equipment. The portal frame comprises a portal frame body. The portal frame body is characterized by comprising supporting leg racks and a top layer rack, wherein the supporting leg racks are arranged on two sides of the top layer rack; a linear guide rail is horizontally arranged on one side of the portal frame body; the linear guide rail is provided with a guide row wheel connected with the avoiding-free stereo parking equipment; and the guide row wheel can move along an axis direction of the linear guide rail. The portal frame can be co-used with the avoiding-free stereo parking equipment; the portal frame body is in a guided cooperation with a driving assembly of the avoiding-free stereo parking equipment via the linear guide wheel on one side of the portal frame body and the guide row wheel to improve stability of the driving assembly; besides, after a vehicle platen elevates, the vehicle platen can be placed on the portal frame body, so long term stress to machinery components of the avoiding-free stereo parking equipment can be avoided; and service life of the avoiding-free stereo parking equipment can be prolonged.

The invention discloses a packing bag and method for preventing agglomeration of powder. The packaging bag is composed of an inner-layer packaging bag body and an outer-layer packaging bag body, the inner-layer packaging bag body is used for packaging the powder, the outer-layer packaging bag is sleeved with the inner-layer packaging bag, the top of the inner-layer packaging bag body is lower than that of the outer-layer packaging bag and compounded with the outer-layer packaging bag to form a compound section, and the top of the outer-layer packaging bag includes a heat-sealing section formed after the power is loaded, wherein the inner-layer packaging bag body is made of breathable water-absorbing materials and the outer-layer packaging bag body is made of plastic films or sheets. The packing bag and method for preventing agglomeration of the powder have the advantages that no foreign matter introduction risk exists and the product purity is not reduced, agglomeration of powder products can be well prevented, the agglomeration problems of the powder products in the long-term stress state can be especially solved, the packing bag and method have universal applicability and can be widely used in the transportation and storage of lithium carbonate and other powder products.

Disclosed is a pitching type simple parking device. The pitching type simple parking device comprises a steel frame, an upper vehicle carrier plate, a lifting device and an anti-falling device, wherein the lifting device comprises a lifting rack and cylinders. The pitching type simple parking device is characterized in that the anti-falling device comprises an anti-release shaft, an anti-falling hook, a rotating shaft and an anti-falling drawbar, wherein the anti-release shaft is arranged on the lifting device; one end of the anti-falling hook is a hook end for hooking the anti-release shaft, and the other end of the anti-falling hook is fixed mounted on the rotating shaft; both ends of the rotating shaft are provided with anti-falling lugs which are fixedly connected to the bottom of the upper vehicle carrier plate; the anti-falling drawbar is fixed to the end portion of the rotating shaft in the radial direction of the rotating shaft, provided with a through hole and hinged to one end of a push-pull unit through cooperation of the through hole and a connector, the other end of the push-pull unit is coaxially connected with the push-pull rod of an electromagnet, and the electromagnet is fixed mounted at the bottom of the upper vehicle carrier plate through an electromagnet support. The pitching type simple parking device can avoid oil leakage, damage and the like due to long-term stress of hydraulic cylinders and long-term internal high pressure of pipes and eliminate the potential risk that the anti-falling hook cannot be opened due to hydraulic oil leakage.

The invention discloses a supporting roller device for a tube type belt conveyor, comprising a partition board vertical to the running direction of a belt, a plurality of supporting roller brackets fixedly arranged on the surface of the partition board, and a plurality of supporting rollers respectively fixedly arranged on the supporting roller brackets. The central line of the rotating shafts of the supporting rollers form a regular polygon; the number of the supporting rollers is even; and adjacent two supporting rollers are respectively positioned at both sides of the partition board. Because adjacent two supporting rollers are arranged at both sides of the partition board, even force is applied on the partition board which is therefore not bent because of long-term stress on one side. The contact time between six supporting rollers arranged at both sides of the partition board and the belt is prolonged to improve the operation stability of the belt.

The invention discloses a lower mold structure with the convenience in mold storage. Convex bodies are formed at the left end and the right end of a lower mold seat respectively; buffer columns are arranged in front and back of the upper surface of each convex body respectively and are exposed out of protective sleeves respectively; a notch is formed in each convex body between the corresponding two protective sleeves; a guide column is arranged in the corresponding notch; corresponding limiting columns are arranged on the corresponding convex body on the outer sides of the two corresponding protective sleeves; two rotatable connecting plates are arranged on the two end surfaces outsides the two convex bodies respectively; a detachable storage column body is arranged on each connecting plate; and a sum of the heights of each storage column body and the corresponding limiting column ensures that a spring arranged on an eccentric swage on an upper mold seat corresponding to the lower mold seat is not in contact with the lower mold seat during storage. According to the lower mold structure disclosed by the invention, with connection of upper and lower molds through the connecting plates, dislocation of the upper and lower molds in the transportation process can be avoided, so that molds are ensured not to be damaged in the transportation process; and when the upper and lower molds are stored, the spring of the eccentric swage is not in contact with the lower mold seat so as to be prevented from invalidating caused by long-term stress, and thus the service life is prolonged.

The invention discloses a direct-current traction anti-twist power cable up to 1500V for rail transit. The direct-current traction anti-twist power cable comprises a copper conductor, wherein a shielding layer, an insulating layer and a protective sheath sequentially coat the outside of the copper conductor; and the protective sheath is filled with a group of metal wires. Compared with the prior art, through a design of adding the metal wires, the cable is always in a stable state under the action of gravity, can generate a certain deflection when a vehicle passes through a rail, but still returns to an original state under the action of the gravity after a passenger car passes, so that the condition that the cable is not twisted off due to long-term stress is ensured.