36results about How to "Good impact energy absorption" patented technology

The invention discloses a corrugated sandwich protective structure of a battery box of an electric vehicle. The protective structure comprises a box body and a box cover, wherein the box body is not closed at top, is composed of a baseplate and a baseplate wallboard fixed around the baseplate and is used for accommodating batteries; the box cover comprises a top plate and a top-plate wallboard fixed around the top plate, and the box cover and the box body are buckled so as to form a closed space. The protective structure is characterized in that the baseplate and the baseplate wallboard are respectively made of a corrugated sandwich protective plate. According to the invention, the box body and the box cover are made of the corrugated sandwich protective plates, so that the batteries can be prevented from being damaged; the corrugated sandwich protective structure has the advantages of high specific stiffness, high specific strength, high fatigue life, strong impact resistance and shock resistance, good impacting energy absorption property, light weight, and the like, thereby facilitating the promotion and application of electric vehicles and passenger cars.

The invention discloses a hierarchical origami-shaped automobile collision energy-absorbing structure. The hierarchical origami-shaped automobile collision energy-absorbing structure comprises a plurality of energy-absorbing layers and an origami-shaped induction tube, wherein the origami-shaped induction tube is a Z-shaped folded metal tube formed by folding a metal sheet through a Miura foldingmethod; adjacent energy-absorbing layers are connected with each other through the folded paper-shaped induction tubes; the plurality of energy-absorbing layers comprise a honeycomb energy-absorbing layer and a porous material energy-absorbing layer coaxially distributed from top to bottom; the honeycomb energy-absorbing layer comprises two first metal plates and a metal material with a special-shaped honeycomb structure filled between the two first metal plates; and the porous material energy-absorbing layer comprises two second metal plates and a porous metal material filled between the twosecond metal plates. The hierarchical origami-shaped automobile collision energy-absorbing structure has good dynamic performance and safety; and sufficient strength and energy-absorbing are ensured by using aluminum alloy, titanium metal and porous metal while having very light weight

The invention discloses an aluminum alloy crash box for an automobile. The aluminum alloy crash box for the automobile comprises an aluminum alloy crash box body, wherein the aluminum alloy crash box body is filled with long fiber reinforced thermoplastic composite material blocks; and connecting plates are arranged at the two ends of the aluminum alloy crash box body. Preferably, two types of long fiber reinforced thermoplastic composite material blocks with different densities are arranged in the aluminum alloy crash box body at intervals. According to the invention, as the aluminum alloy crash box body is combined with the long fiber reinforced thermoplastic composite material blocks, the energy absorption properties of the aluminum alloy crash box body and the long fiber reinforced thermoplastic composite material blocks are organically combined and composite materials with a plurality of densities are arranged in the aluminum alloy crash box body at intervals to control the deformation mode of the crash box; therefore, the energy absorption potential of the crash box is maximized. Automobile crash damage and personal injury can be effectively reduced.

The invention discloses an automobile collision buffer device, and relates to the technical field of automobiles. Each energy-absorbing cylinder is connected to a spring energy-absorbing cylinder in a clearance fit manner; the spring energy-absorbing cylinder is connected to a hydraulic cylinder sleeve; the energy-absorbing cylinder is disposed in an energy-absorbing beam sleeve in a sliding manner; a spring limit rod is arranged at the bottom end of the energy-absorbing beam sleeve; the ends of the spring limit rod penetrate the energy-absorbing cylinder; push springs are arranged on the portion, under the energy-absorbing cylinder, of the spring limit rod in a penetrating manner; the bottom end of the energy-absorbing cylinder is in plugging connection with bolts; the bolts cooperate with electromagnets; limit pin sleeves are arranged on the upper side wall of the energy-absorbing beam sleeve; each limit pin sleeve is internally provided with a limit pin; a pressure spring is cooperatively arranged between each limit pin and the wall of the corresponding limit pin sleeve; the spring energy-absorbing cylinder is internally provided with energy-absorbing springs which are fixed to a spring positioning disc; and a piston rod is disposed in the hydraulic cylinder sleeve in a penetrating manner. The automobile collision buffer device improves automobile collision energy-absorbing effects, protects an automobile and pedestrians, reduces the damage to the front structure of the automobile, is low is cost, and is high in practicality.

The invention discloses an automatic emergency rear protective device and method. The automatic emergency rear protective device comprises a frame, a driving mechanism, a rear bumper and a control device. The driving mechanism is mounted on the frame and in transmission connection with the rear bumper, and the control device is electrically connected with the driving mechanism. By adoption of an electromechanical integration technology, trafficability can be improved while safety of rear vehicles in collision can be guaranteed, and less proneness to damages of the rear protective device is guaranteed when the vehicle runs normally; when rear-end collision is possibly caused by the fact that own vehicle slows down or stops or the vehicle behind runs at a high speed or accelerates suddenly,the automatic emergency rear protective device is started, a danger warning of collision with the vehicle behind is provided for a driver, then the driver can lower the rear bumper to an operating position, and accordingly the damage degree of collision accidents can be decreased.

An external driving type quick switch structure comprises an upper shell, a lower shell and a conductive plate arranged between the upper shell and the lower shell. An electronic ignition device and apiston are sequentially arranged in the accommodating cavity of the upper shell from top to bottom, and an accommodating cavity is formed in the lower shell below the piston and the conductive plate;the switch structure is characterized in that the conductive plate is recessed towards the accommodating cavity of the lower shell, and a flat-bottomed notch is formed in the accommodating cavity; abreaking notch and a bending notch are formed in the flat bottom of the notch at intervals, and the lower end of the piston is located above the breaking notch. The accommodating cavities in the uppershell and the lower shell meet the requirement that the piston can move into the lower shell from the upper shell. The conductive plate is broken at the breaking notch and falls down along the side wall of a cushion block by taking the bending notch as a rotating shaft, so that a main circuit is disconnected. Impact energy is absorbed through an energy absorption structure arranged between the piston and the cushion block.

The invention discloses a 780MPa high-plasticity cold-rolled DH steel and a preparation method thereof. Steel contains C: 0.10%~0.18%, Mn: 1.5%~2.5%, Si: 0.4%~0.8%, Al: 0.02%~0.7%, Cr: 0.02%~0.50%, P≤0.01%, S≤ 0.01%, Nb≤0.1%, Ti≤0.1%, and Si+Al: 0.5%~1.5%, the balance is iron and unavoidable impurities. The starting rolling temperature is 1050~1150℃, the final rolling temperature is ≥900℃, the coiling temperature is 550~700℃; the cold rolling reduction rate is 40%~80%; the continuous annealing preheating temperature is 200~600℃, and the annealing temperature is 760~880℃ , annealing time 10-600s, slow cooling outlet temperature 660-760°C, rapid cooling rate>20°C / s, overaging temperature 300-420°C, overaging time 30-3600s; skin elongation 0.3%-0.7%. For parts in the automotive industry that require high formability.

The invention relates to an automobile roof cover beam with bending resistance. The automobile roof cover beam with bending resistance includes a hollow beam made of carbon fibers, microstructured fillers and a carbon fiber laminate, wherein the microstructured fillers are bonded to the carbon fiber laminate and are arranged in the hollow beam; the hollow beam is a variable diameter square tube, and comprises an upper wall, a lower wall and left and right side walls; the upper wall is curved with a thick intermediate portion and two thin end portions; the cross section of the microstructured filler has a structure in which columnar bodies are intersected at one point, and two ends of the columnar body are semicircular; the microstructure is filled in the roof beam, so as to improve the impact energy absorption effect of the roof beam; and in order to enhance the rigidity of the roof beam, the carbon fiber composite material with high specific strength and high specific modulus is adopted, and is combined with the loading feature of the roof beam, the hollow beam adopts the structure with two thick sides and a thick intermediate portion, thus optimizing distribution of the material, improving the strength of the roof beam, thereby further obtaining a good safety effect.

The invention relates to a 600 MPa grade multiphase steel with good flanging performance, and the 600 MPa grade multiphase steel with the good flanging performance comprises the compositions of, by weight, 0.060-0.100% of C, 0.060-0.400% of Si, 1.20-2.00% of Mn, 0.020% or less of P, 0.010% or less of S, 0.015-0.070% of Als, 0.15-0.35% of Cr, 0.010-0.035% of Ti, 0.010-0.035% of Nb and 0.006% or less of N; A production process comprises the steps that according to the composition setting, blank casting is conducted after conventional smelting is conducted; hot rolling process is performed; coldrolling process is performed; the blank casting is naturally cooled to room temperature, and the blank casting is waiting for used. Yield strength is 360 - 440 MPa, tensile strength is 600 ~ 700 MPa,elongation is 19% or above, the hole expansion rate is 45% or above. The microstructure of the 600 MPa grade multiphase steel is pearlite, bainite, ferrite, a small amount of martensite and residual austenite, thus it is ensured that the good forming performance, flanging performance and collision energy absorption performance are achieved while the high strength is achieved.

The invention relates to an ultra-high molecular polyethylene gear pump, which is composed of a pump body with an ultra-high molecular polyethylene material, a driven wheel, a gland, a main wheel body with a metal material and the like. A driving wheel is positioned on a boss of the pump body, and is engaged with the driven wheel, the wall of the driven wheel can be thickened properly, the boss, a crescent shaped lever and the pump body are combined as an integral body, a manufacture method can employ a machine tooling device to process and shape, or employ a molding and sintering process. The pump body, the driven wheel, the gland and the driving wheel are in soft and hard duality relation, and can preventing the driving wheel from damaging, the ultra-high molecular polyethylene gear pump has the excellent performances of wear resistance, health and nontoxicity, vibration and noise reduction and no adhesion, and is suitable for the gear pump delivered by the high viscosity liquids, foods, medicines and chemical mediums. The ultra-high molecular polyethylene gear pump has the advantages that the components of the ultra-high molecular polyethylene material can replace the metal material components in the prior art, the service life of the gear pump can be increased, the ultra-high molecular polyethylene gear pump has the active effects of no pollution, no vibration, no noisy, self-cleanness, simple treatment and the reduced cost.

The invention discloses 1000 MPa-level high-strength high-plasticity aluminum-containing medium manganese steel and a manufacturing method thereof. The steel comprises the following chemical components by mass percent: 0.05-0.25% of C, 0.02-0.40% of Si, 7.0-11% of Mn, smaller than or equal to 0.015% of P, smaller than or equal to 0.015% of S, 1.50-3.50% of Al, 0.02-0.60% of Cr, smaller than or equal to 0.50% of Cu, smaller than or equal to 0.40% of Mo, smaller than or equal to 0.10% of Nb, smaller than or equal to 0.010% of N and the balance of Fe and unavoidable impurities. The manufacturing method of the steel comprises the steps of smelting, continuous casting, hot continuous rolling, cover annealing, acid pickling cold rolling, cover annealing or continuous annealing and finishing packing. The steel disclosed by the invention has high strength, excellent cold stamping forming performance and impacting energy absorption performance.

The invention discloses an automobile collision buffer device, and relates to the technical field of automobiles. Each energy-absorbing cylinder is connected to a spring energy-absorbing cylinder in a clearance fit manner; the spring energy-absorbing cylinder is connected to a hydraulic cylinder sleeve; the energy-absorbing cylinder is disposed in an energy-absorbing beam sleeve in a sliding manner; a spring limit rod is arranged at the bottom end of the energy-absorbing beam sleeve; the ends of the spring limit rod penetrate the energy-absorbing cylinder; push springs are arranged on the portion, under the energy-absorbing cylinder, of the spring limit rod in a penetrating manner; the bottom end of the energy-absorbing cylinder is in plugging connection with bolts; the bolts cooperate with electromagnets; limit pin sleeves are arranged on the upper side wall of the energy-absorbing beam sleeve; each limit pin sleeve is internally provided with a limit pin; a pressure spring is cooperatively arranged between each limit pin and the wall of the corresponding limit pin sleeve; the spring energy-absorbing cylinder is internally provided with energy-absorbing springs which are fixed to a spring positioning disc; and a piston rod is disposed in the hydraulic cylinder sleeve in a penetrating manner. The automobile collision buffer device improves automobile collision energy-absorbing effects, protects an automobile and pedestrians, reduces the damage to the front structure of the automobile, is low is cost, and is high in practicality.

The invention discloses a 780MPa grade alloyed hot-dip galvanized DH steel and a preparation method thereof. Contained in steel, C: 0.11% to 0.17%, Mn: 1.4% to 2.4%, Si: 0.15% to 0.60%, Al: 0.02% to 1.0%, Mo: 0.20% to 0.70%, P≤0.03%, S ≤0.03%, B≤0.005%, V≤0.05%, Ti≤0.05%, the balance is iron and unavoidable impurities. Slab heating temperature 1170-1280°C, starting rolling temperature 1020-1140°C, finishing rolling temperature ≥910°C, coiling temperature 550-700°C; cold rolling reduction 40%-80%; annealing temperature 770-870°C, The annealing time is 30-300s, the galvanizing temperature is 450-470°C, the alloying temperature is 470-530°C, and the holding time is 5-60s. Finished steel plate A 50 20% to 25%, hole expansion rate ≥ 25%, meeting the requirements of high formability and high hole expansion performance of automotive steel.

A multifunctional logistics carriage, comprising a carriage body, a buffer and vibration reduction device, a ventilation and cooling device, a solar power generation energy storage device, and a disinfection and sterilization device; the bottom of the carriage is provided with a buffer and vibration reduction device, and the buffer and vibration reduction device includes a hollow shell Body, pressure bearing plate, spring, hydraulic push rod, hydraulic drive motor, hydraulic cylinder; the side walls of the box body are respectively equipped with air bag plates, and there are multiple cavities evenly in the air bag plates, and the ventilation between the two cavities The pipes are connected; the top of the box body is equipped with a ventilation and cooling device and a solar energy storage device. The ventilation and cooling device includes a refrigerant, an evaporator, an overflow channel, and an air inlet; the solar energy storage device includes a solar panel and a battery; The bottom of the flow channel is equipped with a disinfection and sterilization device; the invention has good functions of buffering and vibration reduction, ventilation and cooling, solar power generation and energy storage, disinfection and sterilization, high functional integration, strong practicability, and more in line with modern logistics transportation requirements.

The invention relates to a high frequency-characteristic copper-clad plate manufacturing method. The method comprises the following steps: 1)a poly phthalazinone ether / epoxy resin blend is prepared; 2)a sol is prepared; 3)a prepreg is manufactured; and 4)the copper-clad plate is manufactured. As the epoxy resin is modified by poly phthalazinone ether, the manufactured poly phthalazinone ether resin-based high-frequency copper-clad plate overcomes defects such as high moisture absorption, poor processing property, poor impact-resisting property and high price of the existing high-frequency plate. In addition, the manufactured high-frequency copper-clad plate has the following advantages of excellent dielectric property and high glass transition temperature, excellent mechanical property and dimensional stability, excellent heat-resisting property, good processing property, and excellent flame-retardant property. The high-frequency copper-clad plate of the invention can meet requirements of manufacturing a high-frequency, high-speed and high-property circuit board.

The invention discloses a new energy charging pile with buffering and protection functions, which includes a box body, a connecting part and a base body; The charging gun and the charging cable are connected, and the base is hollow at the bottom; the connecting part is located in the middle of the charging pile, and the connecting part has a shell and an inner cavity, and the inner cavity of the connecting part is placed with an airbag; the base is located at the lower part of the charging pile, and the There are pressure sensor, gas generator, power controller and three anti-collision parts; when the pressure of the first anti-collision part exceeds the threshold value, the pressure sensor sends a gas release signal to the gas generator, and the second anti-collision part sends a signal to the third anti-collision part. The collision part conducts pressure, and when the pressure of the third anti-collision part exceeds a threshold value, the pressure sensor sends a signal to cut off the power supply to the power controller. The invention not only saves materials, is convenient for replacement, but also realizes multi-directional protection for charging piles and collision vehicles.

The invention provides a 1.5GPa grade ultra-high-strength, high-plasticity, and high-hole-expansion DH steel plate and a preparation method. The components of the steel plate are as follows in weight percentage: C: 0.20%-0.26%, Mn: 1.8%-2.8%, Si: 1.0%~2.0%, Al: 0.02%~0.08%, Cr: 0.20~0.80%, P≤0.01%, S≤0.01%, Nb: 0.02%~0.15%, V: 0.02~0.15%, Ti: 0~ 0.10%, the balance is Fe and inevitable impurities; the preparation method includes smelting, continuous casting of medium and thin slabs, hot continuous rolling, pickling and cold rolling, continuous annealing, and smoothing; the yield strength of the steel plate produced by the application of the invention is 1000 ~1350MPa, tensile strength 1470~1650MPa, A80 elongation after fracture ≥9.0%, hole expansion rate ≥15%.

An integrated C-ring structure, including skeleton and aluminum foam, the skeleton is integrally formed by injection molding of nylon 66 and 50% glass fiber material, the interior of the skeleton is hollow, the foam aluminum is set at the corner of the skeleton and is detachable with the skeleton The fixedly connected foam aluminum plates and the foam aluminum blocks filled inside the frame, the frame is filled with foam aluminum blocks and the torsional stiffness of the C-ring structure can be increased by replacing the foam aluminum plates with different foaming rates and the degree of freedom of torsional stiffness adjustment can be improved. The skeleton also includes side wall vertical plates arranged symmetrically on the left and right. A cavity is formed inside the side wall vertical plate, and foam aluminum blocks and reinforcing ribs are arranged inside the cavity to further increase the torsional rigidity of the C-ring structure. The integrated C-ring structure of the present invention replaces the welding and riveting structure of many parts of the original C-ring structure, meets the requirement of light weight and can increase the torsional rigidity of the C-ring structure.