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341results about How to "Differences and Significant Improvements" patented technology

Multi-objective uncertainty optimization method for vehicle occupant restraint system

ActiveCN108647429AAvoid conservative designOptimization optimization selectionGeometric CADDesign optimisation/simulationOptimization problemAutomotive safety
The invention discloses a multi-objective uncertainty optimization method for a vehicle occupant restraint system. The method describes the correlation of uncertainty variables of the vehicle occupantrestraint system by using an ellipsoidal convex set model, and uses the interval order relationship and the interval possibility degree to transform the multi-objective uncertainty optimization problem into a deterministic optimization problem. In order to improve the computational efficiency, a local encryption approximation model method is introduced into the iterative solution process, and anapproximation model is reconstructed multiple times to ensure the accuracy of the approximation model and the computational result; and the multi-objective uncertainty optimization method is used forsolving the non-dominated solution set that satisfies the protection performance of the vehicle occupant restraint system, thereby ensuring the safety of the vehicle occupant. The multi-objective uncertainty optimization method for the vehicle occupant restraint system in the invention can not only effectively improve the protection performance of the vehicle occupant restraint system, but also can substantially improve computational efficiency and solution quality of optimization and has a wide range of engineering applications in the field of automotive safety.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Control method of folding arm type dual-arm bridge detecting vehicle

The invention discloses a control method of a folding arm type dual-arm bridge detecting vehicle. The control method includes the dual-folding-arm unfolding control method, the dual-folding-arm folding control method, the two-horizontal-arm included angle control method, and the telescopic arm control method. The dual-folding-arm unfolding control method and the dual-folding-arm folding control method include the step of driving a first rotating mechanism, a second rotating mechanism, a first hydraulic cylinder, a second hydraulic cylinder, a third hydraulic cylinder, a fourth hydraulic cylinder, a fifth hydraulic cylinder, a sixth hydraulic cylinder and telescopic arm hydraulic cylinders so as to fold and unfold the dual folding arms. The two-horizontal-arm included angle control method includes the steps of driving the folding or unfolding amount of a first telescopic arm and the second telescopic arm so as to control the angles of two main arms. The telescopic arm control method includes the steps of controlling the swing amplitude of the telescopic arms by driving a fourth rotating mechanism and a fifth rotating mechanism, controlling the movements of the telescopic arms by driving ball hinge mechanisms, controlling the rotation movements of detecting devices by driving rotating tables, and controlling the working radius of the telescopic arms by driving stroke hydraulic cylinders of the telescopic arms.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Operating method of equipment airborne multistage airbag cooperative shock absorber

The invention discloses an operating method of an equipment airborne multistage airbag cooperative shock absorber. The multistage airbag cooperative shock absorber comprises an upper airbag, an airbagtube column and a lower airbag. In an equipment airborne landing process, the upper airbag can discharge gases and relieve pressure outside by virtue of an upper airbag exhaust valve, gases can be discharged to the airbag tube column by virtue of a combined exhaust valve I, and the airbag tube column expands to realize first-stage shock absorption; the airbag tube column can discharge gases and relieve pressure outside by virtue of an airbag tube column exhaust valve, gases can be discharged to the lower airbag by virtue of a combined exhaust valve II, and the lower airbag expands to realizesecond-stage shock absorption; the lower airbag can discharge gases and relieve pressure outside by virtue of a lower airbag exhaust valve to realize third-stage shock absorption; after equipment airborne safe landing, the airbag device can be vented and is convenient to contain and store. According to the multistage shock absorption method of the multistage airbag cooperative shock absorber, airborne equipment can be prevented from directly contacting with the ground, multistage release of the pressure inside the airbag can also be realized, airbag blasting is avoided, and safe landing of theairborne equipment is ensured.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Bucket wheel stacker-reclaimer

The invention discloses a bucket wheel stacker-reclaimer. The bucket wheel stacker-reclaimer comprises a portal frame, a pulley, a steel wire rope, a counterweight, a counterweight arm, a counterweight driving cylinder, a base, a trundle, a circular base, a pitching mechanism, a ladder, a cockpit, a revolving mechanism, a bucket wheel, a motor frame, a slide piece, a chute, a storage leveling rod,a conveying belt, a bracket, a leveling plate and a leveling motor, wherein the bucket wheel comprises a wheel bucket, a wheel bucket frame, a spoke, a rotating handle and a rotating ring; the wheelbucket comprises a large wheel bucket, a small wheel bucket, wheel teeth and a bundle hoop; the bundle hoop comprises a main body layer and a sealing layer; the circular base is arranged on the base,and is provided with the revolving mechanism; the portal frame is arranged on the revolving mechanism; the cockpit is arranged beside the portal frame; the ladder is arranged on the bucket wheel stacker-reclaimer, and communicates to the cockpit; one end of the revolving mechanism is connected with the bracket, and the other end is connected with the counterweight arm; the counterweight is connected to the counterweight arm; the pulley is arranged at the top end of the portal frame; the steel wire rope is bypassed through the pulley, and the two ends are connected with the bracket and the counterweight arm; the pitching mechanism and the counterweight driving cylinder are symmetrically arranged on the edge of the base; the pitching mechanism is connected with the bracket; and the counterweight driving cylinder is connected with the counterweight arm.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Gear transmission device multi-objective optimization design method based on self-adaptive agent model

The invention discloses a gear transmission device multi-objective optimization design method based on a self-adaptive agent model. According to the method, sample points are sampled through a Latin hypercube experiment design method, meanwhile, optimal shape parameters corresponding to the sample points are solved through a radial basis function, and the solved optimal shape parameters are combined with the sample points to construct an agent model of the gear transmission device; in order to improve the calculation efficiency, a local encryption approximation model method is introduced intoan iterative solving process, meanwhile, the precision of the agent model and a calculation result is ensured by reconstructing the agent model for multiple times, and a non-dominated solution set meeting the structural characteristics of the gear transmission device is solved through a multi-objective optimization method; according to the method, the structural characteristics of the gear transmission device can be effectively improved, the optimized calculation efficiency and solving quality can be essentially improved, and the method has wide engineering application value in the field of gear transmission device design.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Double-layer combination flap valve

The invention relates to a double-layer combination flap valve which includes a first falling valve and a second falling valve. The first falling valve is located on the upper layer, the second falling valve is located on the lower layer, the first falling valve comprises an upper layer barrel body, a funnel, bends, levers and left and right flapping plates, the bends can control the levels to rotate, thus the left and right flapping plates are driven to rotate, and then the first falling valve is opened or closed; and the funnel is arranged on the upper portion of the upper layer barrel bodyfor receiving materials conveniently, the second falling valve comprises a lower layer barrel body, a partition plate, a spring, a wheel disc, a supporting rod, a flange, a straight barrel, a barrel shoulder, an air cylinder, a discharging port, a blade plate, comb teeth, telescopic rods, a fulcrum, a conical disc, a damping ring, a servo motor, a support, a hoop, rotating rings and bulges, the lower portion of the upper layer barrel body contracts, and the first falling valve and the second falling valve are mutually connected by an end port formed by contraction through the flange.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Equipment airborne multi-stage airbag cooperative buffering device

The invention discloses an equipment airborne multi-stage airbag cooperative buffering device. The equipment airborne multi-stage airbag cooperative buffering device comprises an upper airbag, an airbag tube column and a lower airbag; the upper airbag can exhaust air to the outside to reduce pressure by using an upper airbag exhaust valve and can also exhaust air to the airbag tube column by usinga combined exhaust valve I, and the airbag tube column expands to realize primary buffering; the airbag tube column can exhaust air to the outside to reduce the pressure by using an airbag tube column exhaust valve and can also exhaust air to the lower airbag by using a combined exhaust valve II, and the lower airbag expands to realize secondary buffering; and the lower airbag can exhaust air tothe outside to the reduce the pressure by using a lower airbag exhaust valve to realize three-stage buffering. According to the equipment airborne multi-stage airbag cooperative buffering device, through multi-stage buffering of the airbag cooperative buffering device, airborne equipment can be prevented from directly touching the ground multi-stage releasing of the pressure in the airbag can alsobe realized; and therefore, the airbag is prevented from exploded and safely landing of the airborne equipment is guaranteed.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Automobile passenger restraint system optimization design method based on self-adaptive agent model

The invention discloses an automobile passenger restraint system optimization design method based on a self-adaptive agent model. According to the method, sample points are sampled through a Latin hypercube experiment design method, meanwhile, optimal shape parameters corresponding to the sample points are solved through a radial basis function, and the solved optimal shape parameters are combinedwith the sample points to construct an agent model of the automobile passenger restraint system; in order to ensure the precision of an optimization calculation result, multiple reconstruction of theagent model is realized based on error judgment, so that a final approximate optimization design problem of the automobile passenger restraint system is obtained, and an optimization solution meetingdesign requirements is solved through an intergeneration mapping genetic algorithm, so that the safety of automobile passengers is ensured. According to the method, the protection performance of theautomobile passenger restraint system can be effectively improved, the optimized calculation efficiency and solving quality can be essentially improved, and the method has wide engineering applicationvalue in the field of automobile safety.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Imprecise probability reliability design method for equipment airborne airbag buffer device

The invention discloses an imprecise probability reliability design method for an equipment airborne airbag buffer device. The method comprises the following steps: describing a random vector and a probability box vector through a probability model and a probability box model respectively; in order to effectively construct a cumulative distribution function of a probability box variable, ensuringthe consistency of the cumulative distribution function by adopting a moment condition, and ensuring the effectiveness of the cumulative distribution function by adopting a shape condition; meanwhile,in order to ensure the uniqueness of the cumulative distribution function, reconstructing the cumulative distribution function of the probability box variables based on the maximum entropy principle,and solving the reliability index of the equipment airborne airbag buffer device through an iterative mapping genetic algorithm; according to the method, the uncertain variable in the buffer processof the air bag under equipment can be effectively constructed, the calculation efficiency and the solution quality of the solution reliability index can be improved essentially, and the method has a wide engineering application value in the field of air bag under equipment safety.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Working method of airborne occupant multi-stage airbag cooperative buffer seat

The invention discloses a working method of an airborne occupant multi-stage airbag cooperative buffer seat. The multi-stage airbag cooperative buffer seat comprises an upper air chamber, a middle airchamber and a lower air chamber; the upper air chamber, the middle air chamber and the lower air chamber are arranged by stacking from top to bottom, the upper air chamber can exhaust to the outsidethrough an upper air chamber exhaust valve for decompression, and can exhaust to the middle air chamber through a combined exhaust valve, and the middle air chamber is expanded to achieve first-stagebuffer; the middle air chamber can exhaust to the outside through a middle air chamber exhaust valve, and can further exhaust to the lower air chamber through a second combined exhaust valve, and thelower air chamber is expanded to achieve secondary buffer; the lower air chamber can exhaust to the outside through a lower air chamber exhaust valve to achieve three-stage buffer; the multi-stage buffer method of the multi-stage airbag cooperative buffer seat can prevent a human body from colliding secondly with the interior of a fighting vehicle, achieve multi-stage release of the internal pressure of the airbag buffer seat, and prevent the airbag buffer seat from blasting, thereby effectively ensuring a safe landing of an airborne occupant.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Control method of dual-clamping cyclone rope-climbing robot

A control method of a dual-clamping cyclone rope-climbing robot is provided. The dual-clamping cyclone rope-climbing robot comprises piston rods, cylinder barrels, an upper washing structure, a lowerwashing structure, a trapezoidal slider, water storage structures, support seats, a water injection port, a clamping structure, a carrier, a motor, a motor output shaft, a connection block, a nozzle,a nozzle motor shaft, a circular passage, a nozzle motor, a nozzle flap, a spiral passage, a small gear, and a fastening structure. The clamping structure includes a clamping cylinder, a clamping rod,a clamping plate, a clamping half-ring and a split support. The control method includes the steps of preparing, controlling rope climbing, and controlling washing; the washing controlling step includes opening a control valve so that flows of water pass through the connection block, the circular passage and the spiral passage and gather at a nozzle outlet, turning the nozzle motor so that a fluidpassing the spiral passage rotates to form a vortex sprayed out, controlling a motor connected with the carrier so that the small gear rotates and drives teeth at the outer edges of the water storagestructures, thereby driving the water storage structures to rotate and driving the washing structures to rotate for cleaning.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Multi-stage airbag cooperative buffering seat for airborne occupant

The invention discloses a multi-stage airbag cooperative buffering seat for an airborne occupant. The seat comprises an upper air chamber, a middle air chamber and a lower air chamber which are stacked from top to bottom; the upper air chamber can discharge air and release pressure through an air discharge valve of the upper air chamber and also discharge air to the middle air chamber through a first combined air discharge valve, and the middle air chamber expands to achieve first-stage buffering; the middle air chamber can discharge air and release pressure to the exterior through an air discharge valve of the middle air chamber and also discharge air to the lower air chamber through a second combined air discharge valve, and the lower air chamber expands to achieve second-stage buffering; the lower air chamber can discharge air and release pressure to the exterior through an air discharge valve of the lower air chamber to achieve third-stage buffering. Through multi-stage buffering of the multi-stage airbag cooperative buffering seat, not only can secondary collision between the human body and chariot interior parts be prevented, but also the multi-stage release of pressure in the airbag buffering seat can be achieved, the airbag buffering seat is prevented from being blasted, and therefore safe landing of the airborne occupant is effectively ensured.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Multi-gear steady-supporting ball valve controlled by double rocker

ActiveCN108547998AGuaranteed connection formingGuaranteed to be dynamically adjustablePlug valvesOperating means/releasing devices for valvesEngineeringValve seat
The invention discloses a multi-gear steady-supporting ball valve controlled by a double rocker. The multi-gear steady-supporting ball valve comprises a left flange, a pre-tightening piece, a separation ring, a left pressing ring, a lower convex valve seat, an upper valve body, a shaft sleeve, a connecting plate, a right valve seat, a right pressing ring, a pressing plate flange, a lower spring, aleft protruding part, a lower valve body, an outer valve rod, a lower valve shaft, a ball body, a first long rod, a first short rod, an upper connecting rod, a second long rod, an auxiliary shaft, alower connecting rod, a second short rod, an auxiliary valve plate and an inner valve rod, wherein the inner valve rod is arranged in the outer valve rod, the first long rod and the first short rod are arranged at the lower end of the inner valve rod, the tail end of the first long rod is connected with the lower connecting rod, the tail end of the first short rod is connected with the upper connecting rod, the other end of the upper connecting rod is connected with the top end of the second long rod, and the other end of the lower connecting rod is connected with the top end of the second short rod; and the upper connecting rod and the lower connecting rod are located on different horizontal planes and do not interfere with each other, the lower end of the second long rod is connected with the auxiliary valve plate, and the lower end of the second short rod is connected with the auxiliary valve plate. The multi-gear steady-supporting ball valve is characterized in that the inner valverod rotates to drive the first long rod and the first short rod to rotate so as to drive the second long rod and the second short rod to rotate, and therefore the auxiliary valve plate can be drivento be opened and closed, and the auxiliary valve plate is screwed into the ball body when opened; and a groove for containing the auxiliary valve plate in the ball body is formed by injection molding.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Reciprocating material discharging method of lotus seeds

ActiveCN110179131AImprove work efficiencySave the process of strippingFruit stoningHuskingMotor driveEngineering
The invention relates to a reciprocating material discharging method of lotus seeds. The reciprocating material discharging method comprises a material collecting method, a transferring method, a coredischarging method and a lotus discharging method, wherein the material collecting method comprises the steps that at the initial state, an upper blocking disk is located just below a fixing barrel,during discharging, an upper blocking disk motor drives the upper blocking disk to rotate to move out of the range of the fixing barrel, lotus seeds fall onto a material collecting disk through lotusseed passages, the upper blocking disk moves to return to a position just below the fixing barrel, and the lotus seed passages are blocked; the transferring method comprises the steps that four or above lotus seed holes corresponding to the lotus seed passages are formed in the material collecting disk, four or above lotus core holes corresponding to the lotus seed holes are formed in the lower blocking disk, the diameter of each lotus core hole is smaller than that of each lotus seed hole, after material collection is completed, the lower blocking disk and the material collecting disk rotateto the position under a needle disk at the same time, and the positions of cutting ring edges are aligned with those of the lotus seed holes.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Hydrogen storage system

InactiveCN108626563ARealize double-layer opening and closingAchieve pioneering inventionsContainer filling methodsFluid handledFiberSurface layer
The invention discloses a hydrogen storage system, the hydrogen storage system comprises a hydrogen storage tank and a hydrogen storage valve, the hydrogen storage tank comprises a surface layer, a tank body, an inner container, a tank plug and an upper cover, the surface layer, the tank body and the inner container are sequentially arranged from outside to inside, the tank body is upwards provided with a closing-up opening, the inner container is located below the closing-up opening, in an unopened state, the tank plug is contained in the closing-up opening, the upper cover is connected to the closing-up opening in a threaded mode, the surface layer is a fiber winding layer, the inner container is made of stainless steel, and the hydrogen storage valve comprises a valve body, a hand wheel, a first supporting rod, a second supporting rod, a cylindrical connecting part, pawls, a third supporting rod, a spiral groove, an armature, an electromagnetic coil, a piston, outlets, fan rib channels, one-way valves, a valve plate, a magnetic block, a first vertical groove, a second vertical groove and an electronic drive module.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Working method of rigid-flexible coupling airborne loading combined buffer device

InactiveCN111846232AGuaranteed buffer protectionReduced landing attitude requirementsAircraft componentsNon-rotating vibration suppressionExhaust valveMaterial storage
The invention discloses a working method of a rigid-flexible coupling airborne loading combined buffer device. The device comprises an airborne material storage box, a buffer spring, an inner buffer air bag, an inner spherical shell, an outer buffer air bag and an outer spherical shell. In the loading airborne landing process, the outer spherical shell deforms firstly, and first-stage buffering isachieved; then a folding buffer connecting piece deforms, and second-stage buffering is achieved; the outer buffering air bag is compressed, and the outer buffering air bag exhausts air and relievespressure outwards through an outer buffering air bag exhaust valve so that three-stage buffering is realized; the inner spherical shell is deformed after being subjected to a load so that four-stage buffering is realized; the buffer spring contracts subsequently to realize five-stage buffering; the inner buffer air bag is finally compressed and the inner buffer air bag exhausts air and relieves pressure outwards through the inner buffering exhaust valve, and six-stage buffering is achieved; by means of the multi-stage buffering method of the airborne landing device, impact energy can be absorbed stage by stage, the internal pressure of the buffering air bag can be prevented from being sharply increased, the buffering air bag is prevented from blasting, and therefore, the integrity of materials in the airborne landing device is effectively guaranteed.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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