40results about How to "Reduce impact kinetic energy" patented technology

The invention discloses a wire mesh combined machine back antenna hook collision line type ground surface and shipboard recovery system and method for a small-sized unmanned aerial vehicle, and relates to the field of recovery of small-sized fixed-wing unmanned aerial vehicles. The recovery system and the method aims to solve the problem that accurate fixed-point recovery method cannot be realizedand the unmanned aerial vehicle can be damaged easily due to the ground surface and shipboard recovery mode in the existing small-sized fixed-wing unmanned aerial vehicle is solved, and the problem that ground surface and shipboard recovery mode is not suitable for a high-aspect-span unmanned aerial vehicle is also solved. When the unmanned aerial vehicle approaches a blocking rope according to aguiding device at the tail end of the unmanned aerial vehicle, and a folding type antenna is bounced according to a control command, and is hung on the blocking rope; and the hung unmanned aerial vehicle can drag the blocking rope to continuously move, a free end of a traction rope drags a capturing net to slide in the direction of the unmanned aerial vehicle through two fixed pulleys until the unmanned aerial vehicle collides with the capturing net, the unmanned aerial vehicle is hooked on the capturing net through a machine nose barb on the unmanned aerial vehicle, and the unmanned aerial vehicle can be recycled. The recovery system and the method are used for recovering the unmanned aerial vehicle.

The present invention relates to one workpiece finishing apparatus, and is especially one kind one finishing machine for finishing composite RE body. The finishing machine consists of material barrel, cover, support frame, pedestal, driving mechanism and power unit. The material barrel is connected to the support frame via connecting part; the support frame is installed on the pedestal via elastic connecting unit; the material barrel has its central axis in some angle to horizontal line; and the support frame is connected to the driving mechanism and the power unit successively. The present invention has less workpiece breaking rate, less product rust, high finishing quality, no workpiece deformation and other advantages.

The invention discloses a door lock device for a sliding plug door and solves the technical problem of poor operation stability of door lock devices. According to the key point of the technical scheme, the door lock device comprises a lock carrier, a bearing shaft and a push rod, and is characterized in that the lock carrier is in pin joint with a lock fork with a buffer slot and a lock slot, the bearing shaft is provided with bearing torsional springs and a shifting claw, the number of the bearing torsional springs is an even number, the bearing torsional springs are arranged at two sides of the shifting claw, the shifting claw props against the lock fork by the bearing torsional spring; under the driving of the push rod, the lock fork rotates around a pin joint point and the shifting claw is sequentially clamped into the buffer slot and the lock slot; the bearing shaft is provided with a manual unlocking mechanism and an automatic unlocking mechanism for driving the shifting claw to be screwed out of the lock slot; the shifting claw is fixed on a reset disc; the rest disc is arranged at the square shaft of the bearing shaft; and the bearing shaft is sleeved with a self-lubricating shaft sleeve fixed on the lock carrier, and therefore, connection of internal components of the door lock devices is steady and component transmission is steady.

The invention discloses a manufacturing method of a yawing composite ceramic bulletproof plate. The manufacturing method comprises the following steps that (1) an organic or inorganic light material is selected to restrain a ceramic ball to form a light yawing layer; (2) a material of the ceramic ball is selected; (3) a yawing unit is prepared; (4) the ceramic bulletproof plate is prepared; (5) aback plate is prepared; and (6) compression molding forming is conducted. According to the manufacturing method, by ingeniously restraining the ceramic ball, when being shot into the composite bulletproof plate, a bullet makes contact with the ceramic ball firstly, the running trajectory of the bullet is changed through the circular-arc surface of the ceramic ball and the light material, thus thebullet vertically shot into the bulletproof plate is yawed, the kinetic energy component of the bullet striking the bulletproof plate is lowered, and the bulletproof capacity of the bulletproof plateis improved; and according to the yawing composite bulletproof plate manufactured through the method, the bulletproof property of the bulletproof plate is improved, the surface density is lowered, andthe bulletproof plate is suitable for substituting an existing bulletproof armor.

The present invention discloses a shock absorber for vehicle. It has internal cylinder body, external cylinder body, elastic body and shock-resisting ring. It is characterized by that between the described elastic body and the described external cylinder body a closed space is formed; said closed space is separated into first gap portion and second gap portion by using first partition body and second partition body which are integrally-formed on the described elastic body, in the first gap portion and second gap portion the hydraulic oil is injected respectively. The described vehicle shock absorber also has damping ring; said damping ring is a ring body with notch, on said ring body is set a hydraulic oil channel connected with the described first gap portion and second gap portion.

The invention relates to a submersed nozzle for a high-casting-speed continuous casting crystallizer. The submersed nozzle comprises a side wall and a back cover; slag lines are arranged on the outer surface of the side wall; the back cover is mounted at the lower end of the side wall; the side wall forms an inner cavity with an upper opening in the vertical direction; more than one side hole are formed on the side wall and are positioned close to the upper part of the back cover; the side holes are communicated with the inner cavity of the side wall; the upper surface of the bottom of the inner cavity of the side wall is lower than the lower edge of any one side hole, so that the bottom of the inner cavity of the side wall is concave; and steel liquid flows in the inner cavity of the side wall from the upper opening, impacts the bottom of the inner cavity of the side wall, bounces and flows out from the side holes of the side wall. By adoption of the technical scheme, the bottom of the inner cavity of the side wall can effectively buffer the speed of the steel liquid, so as to dissipate kinetic energy of the steel liquid considerably, reduce the impact strength of the steel liquid at high casting speed, reduce impact of the steel liquid on the blank shell of the wall surface of a crystallizer as well as interference of the steel liquid with the liquid level, and avoid excessive fluctuation and slag entrapment of the liquid level.

The invention discloses an electromagnetic self-operated pressure-sensitive structure contact and a manufacturing method thereof. The core technology of the invention is a specially-made magnetic core; the magnetic core is composed of three components, namely pressure-sensitive colloid which is used as a matrix and has a methyl polysiloxane typical structure, soft magnetic material iron-nickel alloy which has an electromagnetic induction function, and a aluminum core silver shell particles which are used for improving the conductivity of a core body. The three components are uniformly distributed under the action of the pressure-sensitive adhesive body and promote each other, so that the 180-degree peel strength of 1.1 kN/m, the shear strength of about 0.85 MPa and the initial conductivityof 2000S/m-2500S/m (the initial conductivity can be improved to about 3500 S/m after being pressed) of the whole pressure-sensitive adhesive are obtained. The electromagnetic self-operated pressure-sensitive structure contact is self-actuated, good in fitting performance, increased in conductivity after actuation, resistant to impact and resistant to corrosion.

The invention relates to a feed pipe for preventing erosion of a die-casting material barrel, and discloses a feeding pipe structure which can carry out diversion on aluminum magnesium alloy liquid layer by layer, then mutual impact and counteracting are achieved during liquid discharging of the aluminum magnesium alloy liquid, the impact kinetic energy of the alloy liquid is reduced, and a guide plate is prevented from being excessively eroded. The feed pipe is characterized in that one end of a main liquid conveying pipe is connected and communicates with a fixed pipe, a main pipeline assembly is arranged at the other end of the main liquid conveying pipe, one ends of a plurality of auxiliary liquid conveying pipes are arranged on the main pipeline assembly, the other ends of the auxiliary liquid conveying pipes extend downwards in an inclined mode and then are bent downwards in a vertical mode, auxiliary pipeline assemblies are arranged at the other ends of the auxiliary liquid conveying pipes, one ends of a plurality of branch liquid conveying pipes are arranged on the auxiliary pipeline assemblies, the other ends of the branch liquid conveying pipes extend downwards in an inclined mode and then are bent downwards in a vertical mode, one end of each liquid outlet tube is connected and communicates with the other end of the corresponding branch conveying pipe, the other ends of the two opposite liquid outlet tubes are opposite, one ends of fixing frames are arranged on the liquid outlet tubes, and the other ends of the fixing frames are connected through a diverting plate.

A shield-shaped tail section type bionic turning bulletproof flashboard comprises a shield-shaped tail section surface layer, a bionic turning layer, a middle energy absorption layer and an inner layer, and the shield-shaped tail section surface layer, the bionic turning layer, the middle energy absorption layer and the inner layer are formed in a pressing manner through an autoclave forming method. According to the shield-shaped tail section surface layer, aluminum oxide ceramic is printed into two shield-shaped tail section symmetric splicing structures through the selective laser sinteringtechnology in the 3D printing technology, the side, making contact with the middle energy absorption layer, of the bionic turning layer is of a corrugated structure, and the middle energy absorption layer is an ultra-high molecular weight polyethylene fiberboard. The inner layer is Kevlar woven fabric, and back protrusion inhibition is achieved. According to the shield-shaped tail section type bionic turning bulletproof flashboard, a chela bar structure and a shield-shaped tail section structure of mantis shrimps are used for reference, keel-shaped bulges of the shield-shaped tail section arebent inwards to absorb a large amount of energy when the surface layer of the shield-shaped tail section collides with shots, meanwhile, the bionic turning layer plays a role in changing the directionof the shots and reducing the impact kinetic energy, and the penetration resistance of the bulletproof flashboard is greatly improved.

The invention provides a gravity energy storage system with a buffering effect. The gravity energy storage system comprises a vertical shaft; a gravity block is movably inserted in the vertical shaft, the gravity block and the side wall of the vertical shaft are in sealed connection through a sealing piece, the gravity block comprises a shell and a heat storage material filled in the shell, a first vent hole is formed in the bottom of the shell, an air compressor unit and an air expansion unit are connected to the top of the shell, and wire coil arrays are correspondingly wound on the inner wall of the vertical shaft and the outer wall of the shell. The lead coil array on the inner wall of the vertical shaft is connected with different power supplies in sequence, and each lead coil on the outer wall of the shell forms a closed circuit, so that alternating current with fixed frequency is applied to the lead coil array on the inner wall of the vertical shaft through the power supplies, and reverse circulating current is induced in the lead coil array on the outer wall of the shell; after the two groups of lead coil arrays with opposite current directions form a reverse electromagnetic field, upward acting force is applied to the gravity block through electromagnetic force, and when an emergency occurs, the gravity block is rapidly decelerated, so that the impact kinetic energy to the lower part of the vertical shaft during falling is reduced.

The invention discloses an anti-falling water conservancy interception device. The device comprises a mounting frame, connecting cylinders, a fixing mechanism and an interception plate, wherein the inner walls of the connecting cylinders are fixedly connected with arc-shaped first permanent magnets and arc-shaped second permanent magnets, the fixing mechanism comprises buckle bodies and clamping air bags, the interception plate is provided with through grooves corresponding to the buckle bodies, spiral magnetic induction lines are fixedly connected in the interception plate, the buckle bodies and the clamping air bags are filled with electrorheological fluid, and the electrorheological fluid is electrically connected with the spiral magnetic induction lines. According to the device, the clamping air bags are arranged and are shrunk by pressing, and then the through grooves in the interception plate penetrate through the buckle bodies, so that the interception plate is arranged; and the interception plate is located at the positions of the connecting cylinders, and when the interception plate is subjected to impact force of intercepted water, the interception plate cannot fall off from the connecting cylinders due to the expansion of the clamping air bags, so that an interception function is finally achieved.

The dam buffering and wave-resisting device for water conservancy construction comprises a wave-resisting wall, a first buffering pipe, a first wave-resisting plate and an overhaul well, and the first buffering pipe, a second buffering pipe, a third buffering pipe and a fourth buffering pipe are installed on the side surface of the wave-resisting wall in an embedded mode; a center base is arranged on the outer surface of the side, provided with the fourth wave-proof plate, of the wave-proof wall, a step-shaped groove is formed in the outer surface of the center base, and a limiting block penetrates through the side surface of the center base. According to the dam buffering and wave-resisting device for water conservancy construction, under the action that the first wave-resisting plate, the second wave-resisting plate, the third wave-resisting plate and the fourth wave-resisting plate can slide relative to the wave-resisting wall when being impacted and can be supported by the adjacent wave-resisting plates to reversely slide, the wave-resisting plates can reversely impact sea waves through sliding; and the kinetic energy of the sea waves is consumed, and the impact force of the sea waves on the whole wave wall is reduced.

The invention belongs to the field of concrete transportation equipment, and specifically discloses a concrete mixing tank noise reduction structure for a concrete transportation vehicle, and the structure comprises a tank body and an obliquely arranged pedestal. A shaftless double-helical blade is rotationally connected in the tank body, and the double-helical blade is hollow at a center line thereof. A right end of the double-helical blade is fixed on the pedestal, a left end of the double-helical blade is fixedly connected with a bearing disk having a center hole, an outer ring of the bearing disk is rotationally connected with an inner wall of the tank body through a bearing, a rotating shaft is arranged at a hollow part of the double-helical blade, the left end of the rotating shaft is fixedly connected at the left end of the tank body, four baffles are fixed at circumferential sides of the rotating shaft and form a cross, the baffles are made of plastics, the baffles are providedwith several leaking holes, and an inner ring of the bearing disk is rotationally connected with the rotating shaft. An end part of the baffle is fixedly provided with a muntin, and a slot hole is formed between the muntin and the baffle. With the structure provided by the scheme of the invention, noise, generated when stones in concrete fall down and collide with the tank body, can be reduced.

The invention provides a preparation method of hard alloy or metal ceramic. The method comprises the steps that grinding is conducted by means of a grinding body, a density of the grinding body is 5 g/cm<3> to 13 g/cm<3>, and a hardness of the grinding body is 84 HRa to94 HRa. The hard alloy with the density being 5 g/cm<3> to 13 g/cm<3> and the hardness being 84 HRa to 94 HRa is used as the grinding body, the density is small, grinding kinetic energy in a grinding process is small, impact kinetic energy in the grinding process is reduced, flexible grinding and efficient mixing of materials can be achieved, machining strain and lattice distortion of powder can be relieved, subgrain defects are reduced, a complete shape of hard alloy grains is kept, mixture quality is improved, and alloy performance is improved.

The invention discloses a movable guardrail and transportation and installation construction trolley which comprises: a partition plate longitudinally arranged along the yellow line trend of a road; aplurality of guardrails which are arranged on one side of the partition plate respectively, wherein every two adjacent guardrails are hinged to the two opposite side faces of one supporting rod through first hinge pieces respectively, and first rolling wheels are arranged at the bottoms of the supporting rods; a buffer mechanism, wherein one end of the buffer mechanism is connected to the partition plate, and the other end of the buffer mechanism is connected to the guardrails or the supporting rods; and buffer layers which are uniformly arranged on one surface, facing the guardrails, of thepartition plate. The partition plate is arranged above the yellow line of the road, meanwhile, the buffer layer is arranged on the partition plate, and the guardrails located on the road is connectedthrough the buffer mechanism, so that when a vehicle collides, the guardrails can counteract part of energy of the vehicle through the buffer mechanism, and then the energy of the vehicle is completely reduced through the buffer layer; therefore, casualty accidents of people can be reduced when the automobile is collided.

A shield-shaped tail section type bionic turning bulletproof helmet sequentially comprises four shield-shaped tail section surface layers, a bionic turning layer and an internal buffer layer from theouter surface layer to the inner surface layer of the helmet, and the four shield-shaped tail section surface layers stably transit to the bullet-facing surface of the periphery of the bulletproof helmet. The shield-shaped tail section surface layers, the bionic turning layer and the internal buffer layer are formed in a 360-degree isostatic pressing mode through an autoclave forming method, and the shield-shaped tail section surface layers are each of a structure that aluminum oxide ceramic is printed into two shield-shaped tail sections to be symmetrically spliced through a selective laser sintering technology in the 3D printing technology. A stick-like structure and a shield-like tail-segment structure of odontodactylus scyllarus are used for reference. The shield-shaped tail section surface layers collide with a projectile, keel-shaped protrusions of a shield-shaped tail section are bent inwards to absorb a large amount of energy, meanwhile, the functions of changing the directionof the projectile and reducing impact kinetic energy are achieved, the penetration resistance of a bulletproof inserting plate is greatly improved, the overall rigidity of a multi-layer structure is large, and when impacted by the projectile, the bulletproof inserting plate is small in overall deformation, light in weight and convenient to carry and wear, and increases comfort.

The invention discloses a buffering protection paperboard, and relates to the technical field of paperboards. The buffering protection paperboard comprises a damping layer, the damping layer comprises a plurality of damping belt parts which are linearly and uniformly distributed at intervals, each damping belt part comprises two damping plates which form an included angle, so as to make the section of the damping belt part in the length direction in a V shape; any two adjacent damping belt parts are connected with each other, so that the whole damping layer forms a wave shape; and each damping belt part comprises a plurality of damping units which are sequentially connected in the length direction of the damping belt part, one damping plate of the damping belt part protrudes in the direction away from the included angle at each damping unit to form an outward protruding part, the other damping plate of the damping belt part sinks towards the direction of the included angle at each damping unit to form an inward dented part, and the inward dented part can be matched with the opposite outward protruding part. According to the paperboard, the energy-saving and environment-friendly effects are achieved while fragile goods such as wine products are protected.