229results about How to "High energy absorption efficiency" patented technology

The invention discloses a double-flapping-wing generating set. The double-flapping-wing generating set comprises a shell and a lead screw. The lead screw is parallel to the shell, and the two ends of the lead screw are movably connected with the shell. The upper part and the lower part of the lead screw are each movably connected with a transmission mechanism. Each transmission mechanism can slide vertically when the lead screw rotates. Each transmission mechanism is provided with a set of blades. The two blades in each set are coaxially arranged in the direction perpendicular to the axis of the lead screw and connected through a rotating shaft. The transmission mechanisms can drive the corresponding rotating shafts to rotate. In addition, a generating set body for generating power through rotation of the lead screw is arranged on any side of the shell. According to the generating set for collecting fluid kinetic energy through double-flapping-wing pitching-heaving motion, the two sets of blades in the generating set are symmetrically arranged side by side, the pitching motion phase difference between the two sets of blades is 180 degrees, the two sets of blades can be the end walls of each other by means of the arrangement, and the energy absorption efficiency and power of the generating set can be improved through the end wall effect.

The invention discloses a gradient composite impacting energy absorption pipe fitting. The pipe fitting comprises a gradient inner pipe, a gradient outer pipe, an aluminum foam filling layer and a fiber reinforced cloth filling layer; the gradient inner pipe is sleeved with the gradient outer pipe, the gradient inner pipe is filled with the aluminum foam filling layer, and the portion between the gradient inner pipe and the gradient outer pipe is filled with fiber reinforced cloth. The gradient composite impacting energy absorption pipe fitting has the following advantages that the energy absorption efficiency can be improved in the modes of axial crumple, radial extrusion, expansion energy absorption, tearing energy absorption and the like, when the pipe fitting is applied to an automobile, when collision occurs, the life safety and property safety of automobile occupants can be protected to the maximum extent.

An outer panel for a pillar of a vehicle includes a central portion, flanges at opposite sides thereof for bonding to an inner panel, and opposite side portions between the central portion and the flange portions in a transverse sectional shape, wherein each of the side portions located at opposite sides of the central portion has a collision energy absorbing section having a thickness that is smaller than that of the central portion.

An image forming apparatus has an image bearing member on which an electrostatic latent image is formed and toner deposited to form a toner image, a heater disposed at a position out of contact with the surface of the image bearing member to output radiant heat to the image bearing member, and a heat controller for controlling rotation of the image bearing member and heat output by the heater to heat the outer peripheral surface of the image bearing member moving relative to the heater. The heater includes a lamp heater having a radiation spectrum that exhibits a major part of the peak intensity in the range of infrared wavelength from 2 to 3.5 μm.

The invention discloses an impact-resistant and high-energy-absorption lattice sandwich structure with a negative poisson ratio characteristic. The lattice sandwich structure is formed on the basis ofa high-performance negative poisson ratio lattice core material. The negative poisson ratio lattice core material is obtained by changing an included angle between a supporting column and a coordinate axis through a three-dimensional cubic structure. When the included angle between the supporting column and the coordinate axis is not equal to zero, the negative poisson ratio lattice core materialis obtained. The negative poisson ratio lattice material and two thin plates form a novel negative poisson ratio lattice sandwich structure, and the structure has the characteristics of a traditionalauxetic lattice structure and a traditional lattice sandwich structure at the same time, that is, the structure has the characteristics of the negative poisson ratio and the same-direction curvature;meanwhile, has excellent mechanical properties such as ultra-light weight, high specific modulus, high specific strength, impact resistance and high energy absorption. In addition, the sandwich structure has high adjustability, and the mechanical property of the lattice sandwich structure can be adjusted and controlled within a large range by adjusting the deflection angle of the supporting column and the relative density of the lattice material. The lattice sandwich structure has a great application prospect in the field of aerospace.

The invention provides an automobile collision energy absorbing box capable of achieving high-efficiency and stable energy absorption. The automobile collision energy absorbing box comprises flanges,a square thin-walled outer shell, lattice structures and a sandwich plate; the flanges are arranged at the upper and lower ends of the square thin-walled outer shell, the lattice structures are arranged on the upper and lower ends of the sandwich plate, and the lattice structures and the sandwich plate are integrally arranged in the square thin-walled outer shell; each lattice structure is formedby distributing aluminum tubes according to the body square diagonal; the sandwich plate comprises two layers of carbon fiber sheets and a honeycomb structure arranged between the two layers of carbonfiber sheets; the honeycomb structure is formed by staggered distribution of regular octagons and regular squares; the lattice structures and the sandwich plate are connected into a whole through spot welding, and the square thin-walled outer shell and the flanges are connected into a whole through spot welding; and the flanges are connected and fixed to a transverse beam and a longitudinal beamof an automobile through bolts. The automobile collision energy absorbing box solves the problems that a traditional energy absorbing box is unstable in energy absorption, poor in multi-angle impact adaptability, discontinuous, low in efficiency and the like.

The invention provides a composite energy absorption device for collision. The composite energy absorption device comprises an extruding part and a bursting part, wherein an accommodating cavity and fiber layers stacked on the side wall of the accommodating cavity are arranged in the bursting part; the accommodating cavity is filled with an energy absorption material; the fiber layers is divided into a silk fiber layer arranged on the inner layer and multiple carbon fiber layers stacked on the outer side of the silk fiber layer; the fiber arrangement angles in the carbon fiber layers are different; the extruding part comprises an extruding rod and an extruding plate; the extruding rod and the accommodating cavity are in interference fit, when the extending rod receives external force, one end of the extruding rod extends into the accommodating cavity and extrudes the energy absorption material, and the other end of the extruding rod is connected with the extruding plate.

The invention discloses an additional swing steel frame capable of improving seismic resistance of a frame structure, and belongs to the field of building anti-seismic protection. The additional swingsteel frame comprises the frame structure and is characterized in that a swing steel frame body is arranged on one side of the frame structure, the frame structure is connected with the swing steel frame body through an energy-absorbing device, the bottom of the swing steel frame body is hinged to a foundation, and the swing steel frame body rotates through a hinging point and comprises a horizontal support, a vertical support, an inclined support and a vertical self-resetting system. According to the frame, the energy-absorbing device has good energy-dissipating capacity and anti-seismic effect and can further reduce and even remove residual deformation of the structure. The frame can effectively control structure deformation, and the seismic energy absorbing capability and the use function recovering capability of the overall frame structure are improved.

The invention provides an energy-absorbing and anti-creeping device, and belongs to the technical field of passive safety of rail trains. The front end of an energy-absorbing pipe is fixed with the inner side of an anti-creeper; a cross guide rod hole is formed in the center of a mounting base; the bottoms of tile-shaped cutter mounting seats are fixed with the mounting base; the tile-shaped cutter mounting seats are fixedly connected with the rear part of a semi-ring cutter by bolts; a semi-dovetail structure of an inside diameter of a rear section of the energy-absorbing pipe is matched with a blade point of the semi-ring cutter; the tail end of the inside diameter of the energy-absorbing pipe clings to an oblique plane of the front end surface of an expansion guide ring; induction grooves and guide rod grooves are formed in an inner wall of the energy-absorbing pipe; the center of the inner side of the anti-creeper is fixed with one end of the guide rod; the other end of the guide rod penetrates through the guide rod hole. The device is mainly used for passive safety of rail trains.

The invention discloses a pier anti-collision device with flexible sandwich structure. The device comprises a steel plate inner anti-collision layer, a buffering energy-absorbing sandwich layer, an outer-layer collision facing panel and I-shaped connecting pieces between all components of the anti-collision device, and the sandwich layer is composed of a concave hexagonal negative poisson ratio honeycomb framework and an inner foam concrete filler. All the components of the device are bonded through epoxy resin adhesives and connected into a whole through I-shaped toggle clips. In order to improve the durability and ductility of the anti-collision device, a layer of polyurea material is sprayed on the outer surface of the head-on collision panel. Compared with a traditional bridge pier anti-collision device, the bridge pier anti-collision device is small in occupied area, convenient and fast to install and replace and small in adverse effect on traffic, the sandwich layer of the bridgepier anti-collision device is high in energy absorption efficiency, and stress diffusion can be effectively achieved. Because the anti-collision device can effectively absorb energy generated by collision and reduce the peak value of collision force, damage to a vehicle and a pier due to collision can be reduced at the same time.

The invention relates to the technical field of ship fittings, in particular to an anti-collision device for a stem of a park yacht based on non-Newtonian fluid. The anti-collision device solves the problem that an existing anti-collision device for a stem of a yacht is not high in protection. The anti-collision device comprises a fixing frame, wherein the fixing frame is in an arc shape, a positioning pin is fixedly connected to the middle portion of the inner side of the fixing frame, an anti-skid pad is fixedly connected to the inner side of the fixing frame, a protective bag is fixedly connected to the outer side of the fixing frame, and the inner portion of the protective bag is filled with the non-Newtonian fluid. According to the anti-collision device, when the stem of the yacht isimpacted, the non-Newtonian liquid shows the characteristics of being as strong as steel under the instant impact, the anti-collision performance of the anti-collision device is maintained, a certaindegree of protection is brought to the personal safety of the yacht, and the damage to the stem caused by the impact is reduced.

The invention relates to a variable stiffness tuned piezoelectric energy harvester. The energy harvester is composed of a variable stiffness tuning module and a piezoelectric energy harvesting module, and the variable stiffness tuning module is composed of a base, a piezoelectric ceramic block, a T-shaped hinge, a stiffness adjusting ring, a slider-crank compliant mechanism and the like. Based on the kinematics singularity principle of an additional spring slider-crank mechanism, when the mechanism starts to move from a kinematics non-singular position and passes through the singular position and then reaches the non-singular position, the rigidity of the mechanism has a positive-rigidity zero-rigidity negative-rigidity zero-rigidity positive-rigidity changing process. A rigid body replacement comprehensive method is adopted, the crank sliding block compliant mechanism with the variable stiffness characteristic is designed, the structure of the energy harvester is greatly simplified, the variable stiffness tuning characteristic of the crank sliding block compliant mechanism enables the energy harvester to conduct vibration reduction and absorption under the broadband vibration condition, the application scene is broadened, and the energy absorption efficiency is improved.

The invention relates to a knee energy-absorbing protecting device and an energy-absorbing support and aims at improving the problem that existing protecting devices are low in energy-absorbing efficiency. The protecting device comprises a manifold beam, a knee protecting plate and the energy-absorbing supports connecting the manifold beam with the knee protecting plate, each energy-absorbing support is formed by an outer frame and an inner supporting member supporting the outer frame, each outer frame comprises an upper frame, a lower frame, a left frame and a right frame, the upper frames and the lower frames are opposite in position, the left frames and the right frames are positioned at two ends of the upper frames and the lower frames, each inner supporting member comprises a first supporting member connecting the upper frame and the corresponding lower frame respectively, a second supporting member and a third supporting member, and the second supporting member and the third supporting member are positioned on the left side and the right side of the corresponding first supporting member. The upper frames and the lower frames are waved and are provided with multiple thinning portions and adjusting holes, so that after a collision occurs, collision energy can be effectively absorbed through deformation at the adjusting holes and the thinning portions.

The invention discloses a car front safety anti-collision beam. The car front safety anti-collision beam comprises a body, a truss and an energy suction box fixedly connected with the truss, the trusscomprises a first trapezoidal body, a second trapezoidal body and a third trapezoidal body which are connected in sequence, the transverse dimension of the second trapezoidal body is gradually decreased from the inner side of the body to the outside, and the transverse dimension of the first trapezoidal body and the transverse dimension of the third trapezoidal body are gradually increased from the inner side of the body to the outside; and the first trapezoidal body, the second trapezoidal body and the third trapezoidal body are all connected with the body. The truss disperses local impact force into the three trapezoidal bodies in the mode that one of the first trapezoidal body, the second trapezoidal body and the third trapezoidal body extrudes the other two to generate displacement, and the impact force is transmitted to the whole body through the three trapezoidal bodies so as to avoid stress concentration. Meanwhile, according to the truss structure, the rigidity of the body canbe improved, and the anti-collision performance of the body is improved.

The invention relates to a vehicle, a sub-frame mounting structure and a design method of the sub-frame mounting structure, wherein the sub-frame mounting structure comprises vehicle body mounting brackets and connecting bolts; the vehicle body mounting brackets are connected between a sub-frame and a floor first cross beam; the connecting bolts are used for connecting the vehicle body mounting brackets with an upper connecting plate and a lower connecting plate of the sub-frame; a reinforcing support is further fixedly arranged on each vehicle body mounting bracket; a notch facing each reinforcing support is formed in each bolt mounting hole; during collision, the connecting bolts squeeze the notches to enable the notches to undergo tear deformation and extend toward the reinforcing supports; and the connecting bolts move with the tear deformation to the reinforcing supports until the connecting bolts break. According to the sub-frame mounting structure, the dynamic collision space ofa whole vehicle can be increased by controlling the deformation of the sub-frame and the vehicle body mounting brackets and the bolt failure under the condition of a certain front suspension size, sothat the carrying capacity of the dynamic collision space is improved, the overall energy absorption efficiency of the vehicle is enhanced, the intrusion of a vehicle powertrain into a front wall isreduced and the direct impact on a passenger compartment is reduced.

The invention discloses a foam-corrugated composite dot matrix metal sandwich conical shell and a preparation method thereof. The foam-corrugated composite dot matrix metal sandwich conical shell comprises a corrugated core body; the corrugated core body has a conical metal corrugated structure and is arranged between an inner conical shell and an outer conical shell; foam filling materials are arranged in pores among the corrugated core body, the inner conical shell and the outer conical shell. The preparation method comprises the steps: firstly, preparing the corrugated core body by a conical corrugated mould; then preparing the inner conical shell and the outer conical shell; assembling the corrugated core body with the inner conical shell and the outer conical shell, to obtain a corrugated dot matrix metal sandwich conical shell; and splicing foam strips and the corrugated dot matrix metal sandwich conical shell to obtain the foam-corrugated composite dot matrix metal sandwich conical shell. The foam-corrugated composite dot matrix core body is combined together with the sandwich conical shell structure, and more shock energy is buffered and absorbed.

The invention discloses a parallel cellular material power absorber, which relates to a power absorber and aims at the problems of the existing single cellular material power absorber that the power absorption efficiency is low and the light-weight and compact design of the power absorber is not easy. The proposal 1 of the invention is as follows: at least two cellular material columns are arranged in parallel and fixed on a bottom plate, two adjacent cellular material columns are contacted and fixedly connected with each other, cellular cell elements on the same cellular material column have the same size, the cellular cell elements on each cellular material column take the shape of a regular hexagon, and the side length difference and the thickness difference of the cellular cell elements on the two adjacent cellular material columns are all equal to or more than 0; and the proposal 2 of the invention is: at least two pre-compressed cellular material columns are arranged in parallel and fixed on the bottom plate, two adjacent pre-compressed cellular material columns are contacted and fixedly connected with each other, and the side length difference and the thickness difference of the cellular cell elements on the two adjacent pre-compressed cellular material columns are all equal to or more than 0. The power absorber has simple structure, light weight, small load fluctuation and high power absorption efficiency, and can be applied to the fields of anti-collision structures of trains, cars and the like and legged landing detectors.

The invention provides a vehicle frame structure which can guide area deformation to ensure the deformation area, effective energy absorbing and the security of passengers when impact occurs. The frame structure has the advantages that a front cross beam can be deformed to absorb energy when the impact occurs; simultaneously, a carling can be deformed to absorb energy according to the guide of a press-burst deformation guide part but fallback to prevent the carriage from being impacted. In addition, a groove-shaped reinforcing plate is embedded into a carling body with a groove-shaped part to enhance the energy absorbing efficiency of the carling. The middle of the carling is provided with a reinforcing structure to form a closed loop with a door frame, and the anti-impact capacity of the carriage can be greatly enhanced.

The invention provides a honeycomb buffering device capable of improving energy absorption efficiency and a design method thereof. Honeycomb cell elements are divided into a folding area and a non-folding area; the honeycomb cell elements in the folding area are subjected to one-time or multiple folding treatment with the same angle or with different angles in the different face direction; in every folding, and the height of the honeycomb cell elements (please see the specifications for the formula) is used for conducting series connection of the honeycomb cell elements in the folding area and the honeycomb cell elements in the non-folding area; and after connection, the honeycomb cell elements are arrayed in the plane perpendicular to the different face direction. The peak stress of the honeycomb buffering device can be effectively lowered, and the energy absorption efficiency of the honeycomb buffering device can be improved.

The invention discloses a method for treating sludge by microwave enhanced wet-type catalytic oxidation. The method comprises the following steps: uniformly mixing the sludge with an oxidizing agent and a catalyst, then introducing the mixture into a microwave reactor for heating and catalytic degradation, finally separating by using a three-phase separator to obtain green sludge, and recycling the catalyst. The preparation method is simple, and the preparation device is reasonable in arrangement, the sludge is decomposed in a microwave heating mode, the decomposition efficiency is high, the environmental pollution is reduced, and good practicability is achieved.