84results about How to "Increase impact energy" patented technology

If an impact occurs with an impact energy which exceeds an elastic limit of a bumper while a shock-absorbing member is in a projected position, a bumper stay is forced to move rearward along a first actuating chamber to cause the shock-absorbing member to pivot to a received position. The impact energy is primarily absorbed by an elastic force of a first spring which biases the shock-absorbing member toward the projected position. When the impact energy is not thoroughly absorbed by the first spring, the shock-absorbing member fully pivots into its received position by the bumper stay which is continuously moved rearward. At this time, a second spring which biases the shock-absorbing member forward and is prevented from being stretched forward by the shock-absorbing member, is contacted with the bumper stay via a support plate. Accordingly, the second spring secondarily absorbs the impact energy while being more compressed by the bumper stay which continuously moves rearward after causing the shock-absorbing member to fully pivot to its received position.

A galvanized steel sheet having (a) a dual phase microstructure with a martensite phase and a ferrite phase and (b) a composition containing by percent weight: carbon in a range from about 0.01% to about 0.18%; manganese in a range from about 0.2% to about 3%; silicon ≦ about 1.2%; aluminum in a range from about 0.01% to about 0.1%; one or both of chromium and nickel in a range from about 0.1% to about 3.5%; calcium in a range from about 0.0003% to about 0.01%; phosphorus ≦ about 0.01%; sulfur ≦ about 0.03%; nitrogen ≦ about 0.02%; molybdenum ≦ about 1%; copper ≦ about 0.8%; one or more of niobium, titanium, and vanadium ≦ about 1%; and boron ≦ about 0.006% by weight; and with the balance of the composition being iron and incidental ingredients. In one embodiment, the steel sheet is both galvanized and galvannealed.

A thermoplastic resin composition is provided comprising a polycarbonate resin, polyester resin, and glass fibers which have been treated with polyolefin wax and optionally a functionalized silane. The nature of the coating on the glass fibers provides the composition with improved impact strength over bonding glass. The composition is useful as a molding material.

The invention relates, in case that a thermally tempered glass is produced by allowing an impact jet flow from quenching nozzles to blow against the glass, to a process for producing a curved shape, thermally tempered glass, characterized in that a quenching is conducted by simultaneously using at least two types of quenching nozzles having different exit diameters of the quenching nozzles. Furthermore, the invention relates to a curved, thermally tempered glass produced by this process and to an apparatus for producing the thermally tempered glass. In the invention, it is preferable that a exit diameter d is from φ1 mm to φ8 mm, a distance Z between the nozzle and the glass is 1 to 80 mm, a chamber pressure P is in a range of 0.1 to 0.8 MPa, and a heat flux difference is 150 kW/m² or less. Furthermore, in the thermally tempered glass, it is preferable that a difference of surface compressive stress values within a glass surface is 20 MPa or less.

The present invention relates to hybrid composite structures with improved ballistic protection properties. More specifically, the present invention relates to hybrid composite structures with improved ballistic protection properties that comprise at least three sub-layers.

A pile driver comprises a hammer for impacting a pile, a velocity sensor for measuring the velocity at impact, and a control system for adjusting the hammer stroke in accordance with the readings from the velocity sensor so that the optimal impact energy is imparted to the head of the pile. Optionally, the system further comprises a pile driving analyzer (including at least one strain gauge and/or an accelerometer) mounted on the side of the pile itself to determine whether the impact loading on the pile is below the maximum allowable stress. If the pile driving analyzer senses an overload of stress on the pile, the control system will reduce the velocity of the subsequent hammer stroke so that it no longer exceeds the maximum allowable stress.

A valveless single-cylinder low or middle wind pressure downhole air hammer comprises an outer sleeve with one end being a rear joint and the other end being a drill bit. A check valve is arranged in the outer sleeve and internally provided with a flexible spring. One end of an air distribution pole is provided with a radial hole and matched with a piston in which a central pore path is arranged. The central pore path is provided with an inner ring groove thereon. The lower part of the piston is provided with an upper air hole that is communicated with the inner ring groove through a slant hole, while the upper part thereof is provided with an air duct. One end of an upper slant hole is communicated with the air duct, while the other end thereof is matched with the radial hole. The piston is matched with the drill bit and a guide sleeve. A valve seat is provided with a locating device. The air hammer enlarges the effective working diameter of the cylinder body, causes the piston to obtain high impact energy, simplifies an air distribution path, reduces gas pressure loss, can be used under low or middle wind pressure to improve the down-the-hole rock drilling efficiency and reduce energy consumption. The locating device solves the locating and guiding problem of the air distribution pole, thus causing the hammer to operate with high efficiency and stability.

The invention relates to a large heat input energy welding high-strength EH36 steel plate which is made of the following components in percentage by weight through smelting: 0.06-0.18% of C, 0.15-0.50% of Si, 1.10-1.60% of Mn, less than or equal to 0.012% of P, less than or equal to 0.003% of S, 0.10-0.40% of Ni, 0.010-0.030% of Nb, less than or equal to 0.010% of Al, 0.010-0.030% of Ti, 0.001-0.010% of Ca and the balance of Fe and inevitable impurities. The maximum thickness of the steel plate is 100mm, the yield strength of the steel plate is greater than or equal to 355MPa, the tension strength of the steel plate is greater than or equal to 510MPa, and the low-temperature impact absorption energy KV2 of the steel plate at minus 40 DEG C is greater than or equal to 150KJ. A production method of the steel plate comprises the following steps: carrying out smelting, LF/RH (Ladle Furnace/Ruhrstahl Heraeus) refining, continuous casting, heating, rolling, and rapid cooling, thereby obtaining a finished product of the steel plate. The steel plate produced by using the method provided by the invention has the characteristics of high purity, high strength, good low-temperature impact resistance, good toughness when the maximum input line energy is 300KJ/CM, and the like, can be widely applied to fields such as shipbuilding, bridges and building structures, and has wide application prospects.

A hydraulic accumulator including an energy storage apparatus with a first piston face configured to reversibly compress an energy storage medium and a second piston face forming at least part of an inner surface of a corresponding second fluid chamber reversibly expandable by movement of the second piston face. A third piston face forms at least part of an inner surface of a corresponding third fluid chamber reversibly expandable by the third piston face. The first, second and third piston faces are coupled together.

The invention relates to a sun-proof composite modified polypropylene pipe for power cable protection. The pipe comprises the following components in percentage by weight: 73 to 78 percent of PP (Propene Polymer), 10 to 15 percent of POE (Polyolefin Elastomer), 4.8 to 5.2 percent of nano calcium carbonate, 0.3 to 0.4 percent of nucleating agent, 0.2 to 0.25 percent of coupling agent and 0.5 to 1 percent of sun-proof lubricating composite functional master batch. Not only does the pipe have better low-temperature impact resistance, wherein impact energy in a falling weight impact test at a temperature of minus 5 DEG C is improved by over 2.5 times, the friction coefficient is reduced by 40 percent and the Vicat heat-resistance temperature is risen by 5 DEG C, but also sun-proof performance of the pipe is improved and the application range of the power pipe is enlarged.

A motor vehicle rear (10) has left and right longitudinal members (12) forming a supporting structure of the motor vehicle. A receiving housing (18) is arranged between the longitudinal members (12) for receiving a traction battery. The receiving housing (18) has a left and right side walls (22, 24) running in the forward direction of travel. A back wall (20) is connected to the left and right side walls (22) and running transverse to the forward direction of travel. An impact profile (26) is connected to the left and right longitudinal members (12, 14) and absorbs impact energy in the event of a rear crash. Left and right reinforcing elements (32 34) connect the impact profile (26) to the respective left and right side walls (22, 24) for reinforcing the impact profile (26) and conducting away some of the impact energy into the left and right side walls (22, 24).

A sterilized article comprising a hydrogen peroxide plasma or hydrogen peroxide vapor sterilized polymer composition, the polymer composition comprising from 20 to 80 weight % of a polyphenylene ether sulfone; and from 20 to 80 weight % of a polyetherimide. When sterilized with a hydrogen peroxide plasma, or hydrogen peroxide vapor, the articles have surprisingly improved resistance to changes in color and clarity as well as resistance to loss of mechanical properties.

The invention discloses a gear tooth surface shot peening device and method. The gear tooth surface shot peening device comprises two spraying nozzle fixing rods arranged side by side, each spraying nozzle fixing rod is provided with at least two spraying nozzles, the orientations of the spraying nozzles installed on the two spraying nozzle fixing rods are in an intersecting state, and a spraying nozzle distance adjustment device is arranged between the two spraying nozzle fixing rods. The gear tooth surface shot peening method comprises the steps that two bundles of projectiles are shot to a gear tooth from two sides of the gear tooth of a gear in an intersecting mode, the projectiles are shot at an angle delta relative to the top of the gear, and the angle delta ranges from 20 to 80 degrees. At the time, one bundle of projectiles are shot at an angle theta relative to one side of the gear tooth and the pitch circle position of the gear tooth, and the other bundle of projectiles are shot at an angle theta relative to the other side of the gear tooth and the pitch circle position of the gear tooth. The gear tooth surface shot peening device and method can improve surface residual press stress of the pitch circle position of the gear, shorten shot peening time and prevent micro protrusions from being generated on the outer side of the top of the gear tooth.

The invention belongs to the field of PP (Polypropylene) materials and particularly relates to color master batch for reinforcing and toughening PP (Polypropylene). The color master batch comprises the following components in parts by mass: 25 to 65 parts of polypropylene, 5 to 20 parts of a toughening agent, 10 to 45 parts of a pigment, 1 to 5 parts of a coupling agent, 0.5 to 3 parts of an antioxidant and 5 to 10 parts of a reinforcing modifier. The reinforcing modifier comprises nanocellulose crystal whiskers with POE (Polyolefin Elastomer) grafted surfaces; the nanocellulose crystal whiskers with the POE grafted surfaces are obtained through the following steps: (1) taking carboxylated nanocellulose crystal whiskers and bromoalkane to react, so as to obtain alkylated nanocellulose crystal whiskers; (2) taking the alkylated nanocellulose crystal whiskers and a reaction type elastomer esterifying agent to be subjected to grafting reaction, so as to obtain a dispersion solution of thenanocellulose crystal whiskers with the POE grafted surfaces; and (3) treating the dispersion solution in step (2) by adopting a solution casting method to prepare the nanocellulose crystal whiskerswith the POE grafted surfaces. By adopting the color master batch for reinforcing and toughening the PP, the problem in the prior art that the rigid strength and tough strength of the PP are difficultto improve at the same time is solved and the prepared color master batch has good rigidity and toughness.

The present invention relates to an air-feed leg rock drill, belonging to the field of pneumatic machinery technology. It includes three portions of cylinder body, holder body and machine head. In the cylinder body interior a valve body is set, said valve body is formed from valve cover, reversal valve which can be leftwards and rightwards slided on its shaft and valve chest. On D section of its valve chest four exhaust outlets are cut, on the internal circumferential surface of its reversal valve a circular groove is cut, on the right end face of its valve cover several axial holes are set, four radial holes cut in first circular groove are communicated with four axial holes cut on the valve cover and four radial holes cut in second circular groove are communicated with four axial holes set on the side surface of valve cover. Said invention can increase stroke of piston and can raise impact energy.

The invention belongs to the technical field of graphene/rubber nanometer composite materials, and relates to an erosion-resistant fluorine rubber nanometer composite material with graphene and a method for preparing the erosion-resistant fluorine rubber nanometer composite material. The erosion-resistant fluorine rubber nanometer composite material comprises, by weight, 100 parts of fluorine rubber, 0.1-15 parts of graphene, 0.5-20 parts of carbon black, 0.5-20 parts of carbon fibers, 3-7 parts of oxide or hydroxide acid acceptors, 2-5 parts of peroxide or bisphenol vulcanizing agents, 0.2-7parts of assistant cross-linking agents and 0.5-5 parts of silane coupling agents. The erosion-resistant fluorine rubber nanometer composite material and the method have the advantages that pre-dispersion treatment is carried out on the graphene by the aid of ball milling processes, accordingly, the dispersibility of the graphene in the fluorine rubber can be improved, the erosion resistance of the fluorine rubber can be effectively improved, erosion loss can be reduced by 62% as compared with fluorine rubber without graphene, the erosion loss further can be reduced by 43% as compared with fluorine rubber which is not subjected to pre-dispersion treatment and is directly additionally provided with graphene, and the erosion resistance can be obviously improved.