73results about How to "Absorb impact energy" patented technology

The invention discloses a preparation method of polycarbonate / polyester alloy. Glycidyl methacrylate grafted ethylene-octylene multipolymer / organic modified needle-shaped aedelforsite composite toughener, i.e. a technology of simultaneously using organic / inorganic rigid particle toughener is adopted; the glycidyl methacrylate grafted ethylene-octylene multipolymer, organic modified needle-shaped aedelforsite, polycarbonate and polyester are melted and mixed in a double-screw extruder, to obtain high-performance alloy material. The prepared polycarbonate / polyester alloy has excellent integrated mechanical properties and size stability, the notched impact strength reaches 1200J / m, the tensile strength reaches 67MPa, the elongation at break reaches 250 percent, the flexural strength is up to 98MPa, the flexural modulus reaches 2750MPa, and the thermal deformation temperature in high load (1.82MPa) is up to 105 DEG C. Therefore, the prepared polycarbonate / polyester alloy can be applied in cars, and to outer decorations, household electrical appliances, IT and the like industrial products.

The invention discloses a method for preparing a polyester carbonate / acrylonitrile-butadience-styrene copolymer. The method chooses maleic anhydride grafted ethylene-octene copolymer / organic modified needle-shaped wollastonite compound flexibilizer as raw materials, i.e. both organic and inorganic rigid granular flexibilizers are used, the maleic anhydride grafted ethylene-octene copolymer, organic modified needle-shaped wollastonite and polyester carbonate / acrylonitrile-butadience-styrene copolymer are melted and blended in a double screw extruder to achieve a high-performance alloy material. The polyester carbonate / acrylonitrile-butadience-styrene copolymer prepared by the method has excellent comprehensive mechanical performance and dimensional stability; the notch impact strength is as high as 1050J / m, the elongation at break is 145 percent, the tensile strength reaches 65.5MPa, the bending strength is 96.5MPa, the flexural modulus is up to 2850MPa, and the heat distortion temperature is as high as 115.5 DEG C under high load (1.82MPa). The copolymer is applicable to manufacturing internal and external decorative articles of autos, household appliances, IT products and other industrial products.

A steering apparatus including an attaching bracket having a slot, respectively, a column supported on the attaching bracket, a fastening rod inserted into the slot and the column, an operation lever attached to the fastening rod, a cam mechanism converting an operating movement of the operation lever into an axial movement of the fastening rod, and a tilt lock mechanism including an eccentric cam rotating in accordance with the operation of the operation lever, an irregularity portion being formed on a cam face of the eccentric cam, and an irregularity portion formed on the cam face. When the operation lever is operated, the cam mechanism moves the fastening rod so as to fasten and clamp the column by the attaching bracket at a desired tilt position and the irregularity portion comes into contact with the attaching bracket so as to regulate an upward movement of the column.

The invention relates to a self-floating composite material bridge pressurized-water anti-collision device. The anti-collision device is characterized by comprising a shell part (12) and a water-spraying energy-consumption part (13), wherein the water-spraying energy-consumption part (13) is arranged by clinging to the bridge; the shell part (12) is arranged outside the water-spraying energy-consumption part (13); the shell part (12) consists of a composite material surface layer (1), a sandwich material layer (2) and a filling material body (3); the sandwich material layer (2) is clamped in the composite material surface layer (1) and forms a shell wall (14); the filling material body (3) is filled in space formed by the shell wall (14); the water-spraying energy-consumption part (13) consists of a canvas water bag (6) filled with water (10), a circle of transverse frameworks (8) which is arranged at a regular interval along the transverse direction of the canvas water bag (6) and longitudinal framework (9) which is arranged along the longitudinal direction of the water bag; the canvas water bag (6) is provided with draining holes (7) regularly; and the shell part (12) is also provided with a rail (11). The anti-collision device has the advantages of simple structure, convenient manufacture, installation and maintenance, low cost and environmental protection.

A vehicle hood stopper structure, in which a stopper functioning as a buffer when closing the hood located at the front of the vehicle body is provided between the hood and the side member of the vehicle body, which includes a The support portion of the stopper, and the support bracket installed on the vehicle body side member, when a load greater than a certain value or more than the load generated when the hood is closed, acts on the support bracket supported by the support bracket. When the stopper is on, the support bracket is deformed to facilitate the downward movement of the stopper. The present invention effectively absorbs the impact energy when the engine cover is closed by adopting a simple structure, and effectively alleviates the impact load generated when a pedestrian's head hits the engine cover or the like in a collision accident.

The invention discloses a front rail structure of an automobile body, which has a Z-shaped front rail extending along the fore and aft direction of the automobile body. The front rail comprises a transverse upper section and the cross section of the front rail in the fore and aft direction is of trench structure. The front rail structure is characterized in that a front reinforcing plate, a middle reinforcing plate and a rear reinforcing plate are respectively welded on the front, middle and rear parts in a trench on the upper section of the front rail; the upper edges of the three reinforcing plates are provided with turnup edges which are welded with the turnup edge of the upper edge of the upper section in a sticking manner; the front rail between the front side and the rear side of the front reinforcing plate is a buffer energy absorbing zone; the middle reinforcing plate and the rear reinforcing plate respectively encircle cavities with the front rail; a gap is reserved between the middle reinforcing plate and the rear reinforcing plate; and the rear end of the rear reinforcing plate is close to the rear end of the front rail. The invention is strengthened as a whole and can effectively absorb and attenuate the impact energy generated during automobile crash. In addition, the force transmission property of the rear force bearing zone is greatly enhanced and the rear force bearing zone can absorb more impact energy during deformation.

A vehicular metal absorber which efficiently absorbs the impact energy exerted from pedestrian legs at a short stroke and protects the pedestrian legs with less remaining crushed parts in the event ofcollision between pedestrian and automobile. The vehicular metal absorber comprises a center flange, a top web and a bottom web leading to both sides of the center flange, a top flange leading to thetop web and a bottom flange leading to the bottom web as a lengthy absorber with its cross-sectional surface integrally formed in a hat shape. On the hat-shaped cross-sectional surface, the inner angle a1 formed between the top web and a flange surface including the top flange and bottom flange as well as the inner angle a2 formed between the bottom web and the above flange surface is above 0 (degree) and below 90 (degrees), and a concave or convex bead roughly parallel to the anteroposterior direction of a vehicle is provided at either one or both of the top web and bottom web.

A car seat for several children and to sit on top of a regular car seat has leg assemblies arranged to absorb energy and reduce pitching in the event of a car crash.

The invention relates to the technical field of organic macromolecule compounds and provides a camouflage EVA (Ethylene Vinyl Acetate) long running shoe insole and a preparation method thereof. The sole material is characterized in that along with the increase of motion frequency, a damping factor is first increased and then is reduced, so that an optimal balance point is found for shock absorption buffer and motive force of sport shoes, and maximum energy absorption is achieved; the sole material is particularly suitable for being used as the insole material of the long running shoe; the camouflage EVA long running shoe insole is prepared by the following steps of firstly, performing internal mixing, mill mixing and granulating on raw materials such as the EVA, an ethylene-octylene copolymer, a foaming agent, a cross-linking agent, zinc stearate, zinc oxide, stearic acid and talcum powder to obtain natural color EVA stock; stirring the EVA stock and pigment to obtain stocks with different colors; secondly, stirring the stocks with the different colors to obtain multi-color mixed stock; finally, performing heating and foaming and secondary oil pressure molding to obtain a final product.

The invention discloses a light-weight safe battery cell support, and a power battery pack. According to the light-weight safe battery cell support, a support main body is a noncombustible foamed block prepared from a macromolecule resin, a foaming agent, glass fiber, and stone powder via chemical foaming, air holes of the noncombustible foamed block formed after foaming are filled with inert gas such as carbon dioxide, nitrogen gas, and ammonia gas; first circular holes are uniformly distributed in the support main body, the support main body is penetrated by the first circular holes from top to bottom, and the first circular holes are formed in shaping process of the support main body. The core parts of the light-weight safe battery cell support comprise the support main body; the light-weight safe battery cell support is prepared via foaming of organic resins, is light, and can be recycled effectively; and production cost is reduced.

The invention relates to a high-impermeability cement-based composite material and a method for preparing the same. The high-impermeability cement-based composite material comprises, by weight, 20-30parts of 525 white cement, 40-60 parts of quartz sand, 18-20 parts of titanium dioxide powder, 10-12 parts of fly ash, 5-15 parts of chitosan nanogel, 3-5 parts of polyacrylate emulsion, 1-10 parts ofpitchstone vitrified micro-spheres, 0.5-2 parts of PVA (polyvinyl alcohol) celluloses, 6-8 parts of ionic liquid, 10-12 parts of crop straw powder, 3-6 parts of clay, 3-5 parts of diatomaceous earth,3-5 parts of maleic anhydride, 1-3 parts of whiskers, 3-6 parts of silane coupling agents, 0.5-2 parts of cellulose ether, 0.3-2 parts of redispersible latex powder, 0.1-3 parts of superplasticizers,0.5-2 parts of inorganic pigment and 60-70 parts of water. The method includes preparing composite materials from the maleic anhydride, the clay, the diatomaceous earth and the PVA celluloses; mixingand stirring the composite materials and other raw materials with one another to obtain the high-impermeability cement-based composite material which is a product.

The invention relates to the field of a recovery assistive device, and particularly relates to a walking aid; the walking aid comprises a bracket; the bracket comprises two front supporting rods, two back supporting rods, a front gear rod and a handle; the front supporting rod and the back supporting rod are composed of separated upper section and lower section; the upper section is connected with the lower section through an elastic device; the handle and the front gear rod are fixed on the upper section. The walking aid can effectively absorb and buffer the impact energy generated when a user is fallen down, and avoid the falling condition along with the user, effectively support the user; the walking aid is suitable for the aged and some patients with some troubles of walking, and the disabled.

The invention discloses a cylindrical lithium battery core bracket and a power battery pack, wherein the cylindrical lithium battery core bracket comprises an inorganic foamed bracket, a first metal support bump and a second metal support bump; the inorganic foamed bracket is a foamed blocky structure integrally formed by being inorganically and formed; a plurality of uniformly arranged open type C-shaped grooves are arranged at two sides of the inorganic foamed bracket; the first metal support bump is embedded at the bottoms of the C-shaped grooves; and the second metal support bump is embedded at two sides of the C-shaped grooves. The cylindrical lithium battery core bracket disclosed by the invention is good in anti-explosion performance; smashing self-destruction of the foamed bracket can occur in a self-explosion process of a battery core; the explosion energy is absorbed; the impact energy is absorbed; and the safety performance of a new energy vehicle is improved.

The invention discloses a fiber rod filling corrugated sandwich structure. The structure comprises an outer layer flat plate, an inner layer flat plate, a corrugated plate, fiber rods and filling resin, wherein the outer layer flat plate is parallel to the inner layer flat plate; the corrugated plate is arranged between the outer layer flat plate and the inner layer flat plate; the extending direction of corrugation of the corrugated plate is parallel to the outer layer flat plate; the fiber rods are arranged in cavities surrounded by the outer layer flat plate and the corrugated plate and cavities surrounded by the inner layer flat plate and the corrugated plate, and the cavities are all filled with the filling resin. The structure disclosed by the invention can effectively withstand the impact damage of space debris to the outer structure and inner facilities of a spacecraft, so as to play a favourable protective effect and effectively reduce the additional protection quality.

The invention discloses a UHPFRC (ultra high performance fiber reinforcement concrete) assembling type road protecting wall and a construction method. The road protecting wall comprises a UHPFRC protecting wall, a bar-shaped foundation, bolts, planting soil and green plants, wherein a T-shaped connecting element on the end head of the UHPFRC protecting wall is implanted into a C-shaped connectingelement to realize the embedding and fixing connection of the UHPFRC protecting wall; anchoring holes are arranged on two sides of the wall body of the UHPFRC protecting wall; the bolts are fixed on the bar-shaped foundation; the anchoring holes arranged on the wall body of the UHPFRC protecting wall are matched with the bolts on the bar-shaped foundation; the bolts pass through the arching holesto fix the UHPFRC protecting wall and the bar-shaped foundation; and an L-shaped reflective stripe is arranged on the side surface of the wall body of the UHPFRC protecting wall. The protecting wall has high structural intensity and light self weight, has excellent impact resistance, and has a function of absorbing impact energy. The UHPFRC assembling type road protecting wall has the advantages of industrialized production, short construction period, long service life and low maintenance cost, can easily guarantee construction quality, and can lower the construction cost of the protecting wall in a full life circle. A greening groove is arranged, holes are embedded into the greening groove for water accumulation, a road can be effectively greened, and the quality of the road is improved.

The invention relates to an integrated pedestrian protection structure. The structure comprises a bumper skin, an energy absorption block and an anti-collision beam, the bumper skin is installed on anautomobile body, and a shank supporting cross beam is integrated at the lower end of the bumper skin; and the two ends of the shank supporting cross beam are fixedly connected with the anti-collisionbeam on the upper portion through side supporting supports, and the energy absorption block is fixedly arranged on the anti-collision beam. When a pedestrian collides with the front end of the automobile, the upper portions of the shanks of the pedestrian make contact with the middle of the bumper skin, energy is transmitted to the energy absorption block, the energy absorption block deforms to absorb the energy and then transmits impact to the anti-collision beam, the lower portions of the shanks of the pedestrian make contact with the lower portion of the bumper skin, the shank supporting cross beam integrated on the lower portion of the bumper skin absorbs collision energy, and the energy is transmitted to the anti-collision beam through the side supporting supports. Light weight is achieved, and impact energy on the lower portions of shanks of pedestrians can be effectively absorbed.

The invention discloses a convex submarine cable protection pipe which comprises a chain structure formed by meshing at least two sections of submarine cable protection pipe modules, and each sectionof submarine cable protection pipe module is of a half type structure and is formed by matching two symmetrical single structure units. A plurality of blind holes are symmetrically formed in the buttjoint faces of the two sides of each single structure unit, positioning pins are inserted into the blind holes, a plurality of grooves are formed in the outer surfaces of the single structure units, and steel strips are placed in the grooves. Each single structure unit comprises a head part, a main body and a tail part, two adjacent single structure units are mutually matched and connected throughan outer convex ring and an inner groove, and a submarine cable is arranged in the single structure units. And the outer surface of the convex submarine cable protection pipe is provided with a plurality of convex structures. The convex structures can reduce the swing amplitude of the submarine cable and prolong the service life; the convex structures are matched with the polyurethane material, so that collision energy can be effectively absorbed, and the submarine cable is protected from being damaged by collision; the material has excellent wear resistance, tear resistance and corrosion resistance at the same time, and the internal submarine cable is protected for a longer time.

The invention discloses an antistatic flame-retardant PE pipe and a preparation method thereof. The PE pipe is prepared from 4-6% of fire retardant, 0.5-1.5% of auxiliary flame retardant, 4-6% of antistatic agent and 86-91% of PE base material. The auxiliary components in the formula are concentrated first to prepare dual-resistance master batch, then the master batch is mixed with body resin in proportion, and then the materials are extruded and granulated through a twin-screw extruder. The PE pipe has the advantages of being good in ageing resistance and not prone to embrittlement, having good toughness and impact energy absorption, and being good in rapid crack resistance and corrosion resistance, free of scaling, smooth in inner wall and capable of improving the conveying capacity by 30%.

The invention relates to the technical field of nylon toughening agents, and particularly discloses a core-shell toughening agent, a preparation method thereof and nylon applying the core-shell toughening agent. The maleic anhydride functionalized core-shell toughening agent is of a core-shell structure with a polyketone graft as a shell and an ethylene propylene diene monomer graft as a core, and comprises polyketone, ethylene propylene diene monomer, maleic anhydride, an initiator, an assistant crosslinker and a silane coupling agent; the preparation method comprises the following steps: initiating free radicals of the ethylene propylene diene monomer and the silane coupling agent by an initiator to generate grafting reaction to obtain an ethylene propylene diene monomer graft; and initiating free radicals of polyketone and maleic anhydride to carry out grafting reaction by the initiator to obtain a polyketone graft, and finally extruding the ethylene propylene diene monomer graft and the polyketone graft in an extruder to obtain the core-shell toughening agent. The prepared toughening agent can reduce the uncertainty of the grafting number and grafting position of maleic anhydride in the grafting process, the quality of the core-shell toughening agent is improved, and the physical performance of toughened nylon is improved.

The invention discloses a deep well ingate device with a deformation measuring function and a use method. The deep well ingate device comprises a plurality of ingate supports and an iron wire, the ingate supports are arranged side by side, and the two ends of the iron wire are horizontally fixed to a rock mass through embedded steel nails. Each ingate support comprises a top beam, a bottom beam, a left supporting column and a right supporting column, the left supporting column and the right supporting column are arranged between the top beam and the bottom beam in a mutually parallel mode, and the top beam is fixedly connected with the bottom beam through the left supporting column and the right supporting column. Each top beam comprises top beam inner I-steel and top beam outer I shaped steel, each top beam inner I shaped steel is fixedly connected with the corresponding top beam outer I shaped steel through a plurality of top beam web members, and a two-way digital scale is fixedly arranged on the lower portion of the top beam inner I shaped steel. The deep well ingate device is high in supporting intensity and high in adaptive capacity of surrounding rock deformation, a deformation monitoring device is arranged, so that the recoverability is good after the use of the device is completed, and the subsequent recycling is convenient to achieve.

The invention provides an anti-collision beam used for a vehicle and the vehicle. The anti-collision beam used for the vehicle comprises an anti-collision beam body, a left energy absorbing box, a right energy absorbing box and an inner strengthening part. An energy absorbing cavity is defined in the anti-collision beam body. The left energy absorbing box is arranged at the left end of the anti-collision beam body and extends backwards, and the right energy absorbing box is arranged at the right end of the anti-collision beam body and extends backwards. The inner strengthening part is arrangedin the energy absorbing cavity. The front end of the inner strengthening part is connected with the front side wall of the energy absorbing cavity. The rear end of the inner strengthening part is connected with the rear side wall of the energy absorbing cavity. By means of the anti-collision beam used for the vehicle and the vehicle, when the front side of the vehicle is impacted, impact force isreduced, the anti-collision beam absorbs impact energy, a pedestrian can be effectively protected when the vehicle collides with the pedestrian, hurt to the pedestrian is reduced, and the damage degree to a part on the front side of the vehicle can also be reduced.

The invention discloses an ultrahigh-strength shattering and bullet protecting layer which sequentially comprises an ultrahigh-strength steel layer (1), a common steel layer (2) and a concrete layer (3) from top to bottom, all the layers are detachably and fixedly connected into an integral composite structure through ultrahigh-strength device assembly connecting pieces, and meanwhile disassembly and replacement are convenient. The ultrahigh-strength alloy steel which is high in strength, good in fracture toughness, high in impact load resistance and low in cost is adopted as a first-layer material; different safety levels can be achieved by adopting different thickness matching schemes for all the layers, and typical earth-penetrating bullets with different equivalent weights, especially earth-penetrating weapons with large equivalent depths, can be impacted and broken. According to the composite structure, an ultrahigh-strength material is adopted, so that the earth-penetrating bomb is impacted and broken, and the protection capacity is improved; meanwhile, the structure is simple, manufacturing is easy, the application range is wide, and prefabricated components are convenient to construct, and can be applied to bullet shielding layers of military engineering and civil air defense engineering.

The invention discloses a cylindrical lithium cell support and a power battery pack, wherein the cylindrical cell support includes an inorganic foam support, a first metal support protrusion, and a second metal support protrusion, and the inorganic foam support adopts an integrated inorganic foam The molded foam block structure is provided with several evenly arranged open C-shaped grooves on both sides of the inorganic foam support. The bottom of the C-shaped groove is inlaid with a first metal support protrusion. The two sides are inlaid with second metal support protrusions. The invention has good anti-explosion performance. During the self-explosion process of the electric core, the foamed bracket can undergo crushing self-destruction, absorb explosion energy, absorb impact energy, and improve the safety performance of the new energy vehicle.

The invention discloses a composite buffer. The composite buffer comprises a limiting device and a cylinder body, as well as a seal cover, a lower cover, a piston, a piston rod, a spring, a retainer and a cushion pad which are mounted in the inner chamber of the cylinder body, wherein the cushion pad is wrapped outside the piston rod and is in contact with the seal cover; the retainer is wrapped on the piston rod and used for fixing the cushion pad; the piston divides the inner chamber of the cylinder body into an upper oil chamber and a lower oil chamber; and a throttling port through which the upper oil chamber and the lower oil chamber are communicated is formed on the piston. The composite buffer can achieve twice buffering, effectively reduces the impact caused in closing and opening of a vacuum circuit breaker, and can effectively absorb the impact energy of the limiting device and prevent the limiting device from rebounding.