126results about How to "Achieve impact resistance" patented technology

The invention relates to a metal surface modification method. The invention first obtains a textured surface with a certain surface roughness value on the surface of a material by an electron beam texturing method, forms uniform tiny pits, and increases the bonding strength of the interface; then uses plasma The spraying process uses Co-based alloy or Ni-based alloy powder as the material to form a coating; finally, laser remelting technology is used to remelt the coating surface to improve the surface structure of the coating and improve the surface performance. Compared with the existing technology, this process can realize high temperature resistance, corrosion resistance, oxidation resistance, and fatigue resistance, and has high bonding strength, and the coating structure is uniform and compact, thereby greatly broadening the application range.

The three-dimensional hollow double sandwiched fabric consists of one upper layer interwoven with two upper ground warp layers and one upper weft yarn layer, and one lower layer interwoven with two lower ground warp layers and one lower weft yarn layer, as well as one middle layer interwoven with two middle ground warp layers and one middle weft yarn layer. The weft yarn layers in the upper layer, the middle layer and the lower layer are also interwoven with the poil warps, so that the upper layer, the middle layer and the lower layer are connected integrally to form one hollow double sandwiched structure. The fabric of the present invention is uses as reinforcing body of composite material, and the composite material with the fabric is light, high in impact strength, high in antiwear performance, high in bending performance and high in rigidity. The double sandwiched structure may be also used in heat insulation, anticorrosion, real-time monitoring, etc.

The invention belongs to the field of processing woods, and particularly relates to a method for manufacturing a bamboo strengthened poplar laminated veneer lumber. The manufacturing method comprises the following steps of: cutting the poplar veneer, scarfing the veneer, dipping the scarfed veneer, dipping a bamboo layer, drying, hot pressing, decorating a laminated timber and the like. The method is reasonable in design and simple in technology; the poplar with small diameter class is used as raw material for producing the laminated veneer lumber; the bamboo material with the same direction with fiber and high strength is introduced; the surface veneer is subjected to aqueous SiO2 (silicon dioxide) sol impregnation strengthened treatment, so that the shortcomings of the quality and the processing of the poplar are conquered, the existing resource is effectively used; the small woods and inferior woods can be better used; the outturn percentage is high; and the economic effect is obvious. The obtained laminated timber is high in strength, excellent in stability, free of cracking and deforming, high-temperature resistant and excellent in flame retardation. The obtained laminated timber can be used for indoor floorboard and decorating and refurbishing materials; the formaldehyde emission is far less than the home and aboard emission standard; and environment-friendly requirements can be achieved.

The invention relates to an urban shock-resisting waterlogging-preventing rainfall flood management system, which comprises a plurality of blocks of concave green fields, a plurality of rainwater utilizing facilities, a plurality of concave rainwater parks, a plurality of concave playgrounds and an intelligent control system, and the urban shock-resisting waterlogging-preventing rainfall flood management system is characterized in that the concave green fields, the rainwater utilizing facilities, the concave rainwater parks and the concave playgrounds are communicated with one another though a water drain pipe network, the water drain pipe network is provided with a water drain pipe network liquid level meter, each concave rainwater park is internally provided with a park inner liquid level meter, each concave playground is provided with a playground inner liquid level meter, a water inlet of each concave rainwater park is provided with a park water inlet liquid level meter, a water inlet of each concave playground is provided with a play ground water inlet liquid level meter, the input end of the intelligent control system is connected with the output ends of the liquid level meters, and the output end of the intelligent control system is connected with control input ends of a water inlet/water discharging systems of the concave rain water parks and the concave playgrounds, thus an intelligent urban shock-resisting waterlogging-preventing rainfall flood management system is formed. The urban shock-resisting waterlogging-preventing rainfall flood management system has the beneficial effects that the shock can be resisted, the water logging is prevented, and the rain water is regulated, stored and discharged.

The invention provides a ceramic-metal composite liner plate for a large semi-autogenous mill and a casting method of the ceramic-metal composite liner plate. The liner plate is formed by arranging a ceramic composite layer on a metal matrix. A trace amount of molybdenum powder and a trace amount of nickel powder are added to the ceramic composite layer to improve the toughness of the ceramic composite layer, a trace amount of La2O3 powder is added to refine crystal particles of the ceramic composite layer, and the bonding strength of the ceramic composite layer and the metal matrix is improved. The casting method includes the casting technology process and the thermal treatment technology process. In the casting technology process, the ceramic composite layer and the metal matrix are metallurgically bound through negative pressure casting of an evanescent mode, and after pouring is completed, a casting is cooled by maintaining the vacuum degree of a sand box and horizontal two-dimensional vibration of a workbench of the sand box. The wave trough thickness of the manufactured ceramic-metal composite liner plate for the large semi-autogenous mill is larger than 140 mm, and the weight is 1.5 tons or above; the hardness of the ceramic composite layer is HBW600 or above, and the hardness of the metal matrix is larger than HRC40; the impact toughness is larger than or equal to 40 J/cm<2>, and the yield strength is larger than 1,100 MPa; and the beneficial effects of being resistant to shock, flowing deformation and abrasion are achieved.

The invention provides an anchor cable supporting system with impact resistance. According to the technical scheme, an anchor cable penetrates through a pressure yielding tray, and a sunk part achieving the pressure yielding effect is arranged at the penetrating portion; meanwhile, a pressure yielding protective hood is arranged on the bottom face of the sunk part, a pressure yielding pipe is arranged in the sunk part, and a lock achieving the limiting effect is arranged at the bottom of the pressure yielding pipe; an annular object achieving an anti-fall protection effect is arranged below the lock and is hung at one end of the anti-fall hook, the other end of the anti-fall hook is hung on a rock body, and thus the anchor cable, the pressure yielding pipe, the lock and the like are all borne and protected by an anti-fall ring. Through the technological improvement, the anti-impact effect of the anchor cable in the vertical direction is achieved, and meanwhile, the anchor cable supporting system has an anti-fall protection function.

The invention provides a connector constructed 1 made of a steel pipe and bearing a tie function of a ladder-type sleeper for railway tracks, in a connector constructed of a steel pipe 1 used in the ladder-type sleeper for railway tracks integrated with longitudinal beams made of concrete and the connectors constructed of steel pipes 1 by feeding concrete, both end portions of the connector constructed of the steel pipe 1 are flattened in the horizontal direction and a corrosion resistant coating 4 is coated at portions of the connector constructed of the steel pipe 1 exposed to the atmosphere.

The invention provides a lamp testing device, a lamp testing framework and a lamp testing method. The testing framework comprises a frame body and a mounting support, wherein the frame body is a cuboid and has an accommodation chamber for holding lamps to be tested, and reinforced ribs are disposed between diagonal vertexes of at least one side surface of the frame body; the mounting support is arranged between two parallel edges of one side surface of the frame body, and is used for fixing and connecting the lamps to be tested. The arrangement of the mounting support enables impact energy to be transferred to the support of the lamp and to the lamp, so as to test impact resistance capability for the support of the lamp and for the lamp. Special structural designs of the lamp impact-testing frame, such as reinforced ribs, reinforced plates, wrap angle reinforced elements, and the like, can reduce material consumptions under the condition of assuring impact strength, thereby reducing production cost.

The invention discloses an arch type flexible ecological revetment structure for a small and medium-sized valley or river channel and a construction method for the arch type flexible ecological revetment structure. The arch type flexible ecological revetment structure is characterized in that gabion retaining walls are built on valley or river channel bank slopes along the longitudinal direction; the bottoms of the gabion retaining walls are supported by an inverted stone arch built in the valley or river channel; the upper ends of the gabion retaining walls are tied at anchoring points of the bank slopes above the gabion retaining walls by tightening corrosion-resisting metal ropes. The construction method for the arch type flexible ecological revetment structure comprises the following steps of laying a metal mesh and loading stones on a substrate of each valley or river channel bank slope; vibrating, compacting and packaging the stones to form gabion units; sewing and tying adjacent gabions by using the corrosion-resisting metal ropes and building to the design elevation according to the mode; tightening and tying the gabions to the anchoring points of the bank slopes above the gabions by the corrosion-resisting metal ropes; meanwhile, building the inverted stone arch for supporting the bottoms of the gabion retaining walls in the valley or river channel. The arch type flexible ecological revetment structure and the construction method thereof disclosed by the invention have the advantages of reasonable mechanical design, simple construction process, easiness in construction and low construction cost; frequent landslides of the valley or river channel are prevented, disasters caused by the landslides are reduced, and ecological revetment is realized.

The invention provides a composite water-proof layer for a railway ballast track concrete bridge deck and a construction method of the composite water-proof layer. The composite water-proof layer comprises a modified polyurethane compound finish paint layer, a modified polyurethane compound primer layer and a closed primer layer from top to bottom. The invention further provides raw material compositions of the modified polyurethane compound finish paint layer and the modified polyurethane compound primer layer and a preparation method of the modified polyurethane compound finish paint layer and the modified polyurethane compound primer layer. The composite water-proof layer is directly formed between the concrete bridge deck and a railway ballast by using a high-molecular material, a concrete protection layer does not need to be laid, the project cost of the concrete protection layer can be saved, the structure dead load can be reduced, and it is of an important significance in improving the durability of the railway concrete bridge. Moreover, the adhesive strength between the novel water-proof layer and the concrete bridge deck is high, and water breakthrough can be effectively reduced.

The invention discloses a heat insulation composite plate of an outer wall. The heat insulation composite plate comprises an upper panel, a lower panel and a core material, wherein the upper panel and the lower panel are made of various building outer wall heat insulation materials; the core material is made of various heat insulation materials; two faces of the upper and lower panels are respectively provided with one layer of glass fiber gridding cloth and non-woven fabric; and strip-shaped heat insulation materials are between the upper plane and the lower panel; 2-3 mm of gaps exist among the strip-shaped heat insulation materials; and reinforcing ribs made of the building outer wall heat insulation materials are arranged in the gaps and wrapped with the glass fiber gridding cloth. The heat insulation composite plate of the outer wall, disclosed by the invention, has the advantages of capability of being produced continuously, once molding, no layering, high bonding strength, good toughness, impact resistance, weight reduced by 60%, easy construction, moderate single plate surface, easy splicing, capability of being sawn, nailed and anchored, convenience in operation, high construction speed, low comprehensive manufacturing price and capability of largely reducing the constructional engineering cost; and by means of the heat insulation composite plate, the weight of the building main structure is reduced, the construction of the heat insulation composite plate is more than two times faster than that of the traditional layered construction, the cost and time are saved, and the construction quality is largely improved.

The invention discloses an impact-resistant curved rod dot-matrix sandwiching board structure. A curved rod dot-matrix structure and a sandwiching board structure are combined to obtain the sandwiching board structure having light weight, high strength and strong impact resistance. The impact-resistant curved rod dot-matrix sandwich board structure consists of an upper surface board, a lower surface board, and a curved rod dot-matrix structure core layer, wherein the curved rod dot-matrix structure core layer is formed by single curved rod substructures extending in a space, and each single curved rod substructure is formed by a plurality of same-shaped curved rods crossed at equal angles. The curved rod dot-matrix structure is light in weight and high in strength, has good deforming capability and energy absorption efficiency under the effect of impact load, is combined with the sandwiching board structure to have good flexural rigidity and impact resistance and has broad applicationprospects in the fields of aerospace, civil engineering, machinery manufacturing and the like.

The invention provides a composite waterproof layer for a concrete bridge deck of a railway ballast track and a construction method of the composite waterproof layer. The composite waterproof layer comprises a concrete protective layer, a modified polyurethane paint layer and a sealing primer layer from top to bottom; and the invention also provides a polyurethane composition for forming the modified polyurethane paint layer and a preparation method of the polyurethane composition. According to the invention, the waterproof layer is formed by directly spraying or roll-coating polymer materialson the concrete bridge deck, and then the concrete protective layer is laid, so that the structure not only can avoid an own defect that an existing waterproof coil material is weak in bonding with the concrete bridge deck and effectively reduce occurrence of water channeling, but also prevent hidden dangers brought by more overlapping parts in construction of waterproof coiled materials; therefore, the invention is of great significance in improving durability of railway concrete bridges.

The invention relates to an oil-resistant static-conducting anticorrosive paint and a preparation method thereof and belongs to the field of chemical industry. The oil-resistant static-conducting anticorrosive paint comprises the following raw materials in part by weight: 50 to 54 parts of liquid epoxy resin, 5 to 9 parts of rutile type titanium oxide powder, 0.5 part of bentonite, 1 to 1.4 parts of polyamide anti-settling agent, 1 part of dispersant, 0.5 part of leveling agent, 0.1 part of antifoaming agent, 20 to 24 parts of conducting mica powder, 3 to 7 parts of superfine talcum powder, 4 to 8 parts of methyl isobutyl ketone (MIBK), 0.3 to 0.7 part of antistatic agent and 28 to 56 parts of dimethylbenzene. The oil-resistant static-conducting anticorrosive paint has the advantages of reasonable formula design, high conductivity, low cost, stable quality and high oil resistance, is difficult to deposit and agglomerate and is easy to disperse and clean.

The invention discloses an automobile spring material with good brittleness resistance and good rupture resistance. The automobile spring material consists of the following elements in percentage by weight: 0.3% to 0.8% of carbon, 0.2% to 0.3% of silicon, 1.8% to 2.0% of manganese, 1.2% to 1.8% of nickel, 0.02% to 0.04% of cobalt, 0.002% to 0.03% of aluminum, 0.2% to 0.24% of chromium, 0.01% to 0.03% of neodymium, smaller than or equal to 0.015% of sulfur, smaller than or equal to 0.015% of phosphorus and the balance of iron and inevitable impurities. The automobile spring material disclosed by the invention is capable of totally satisfying the automobile performance requirements on impact resistance, brittleness resistance and rupture resistance and is also capable of realizing batch production and lowering the cost.

The invention discloses a tubing head and casing head device for oil development, and relates to the technical field of oil development devices. A hanger comprises an inner-layer coupling for being connected with first tubing and an outer-layer coupling for being connected with a first casing, and further comprises an inner positioning sleeve and an outer positioning sleeve which are arranged between the first tubing and the first casing, a locking mechanism, a slip and a sealing shell are sequentially connected to the outer wall from the first tubing to the first casing in a series mode, a sealing assembly is arranged in the sealing shell, a four-way joint comprises a main tube body connected with the first tubing, and four branch tube bodies fixedly communicating with the main tube body,and connecting length adjusting mechanisms connected with a to-be-connected part are arranged on the four branch tube bodies correspondingly. Through cooperation between the structures, on the one hand, the connecting length of the four-way joint is convenient to adjust, on the other hand, the hanger can automatically adjust the position of the first tubing and the first casing, so that the firsttubing and the first casing are centered and concentric.

The invention relates to the technical field of environmental art display devices, and particularly discloses a multi-angle display device for environmental art design. The device comprises a base, a stepping motor is fixedly mounted in the base, the top of the stepping motor is fixedly connected with a rotating rod with one end extending to the upper part of the base, the outer side of the rotating rod is movably connected with a sleeve, one end of the sleeve extends to the position above the rotating rod, two limiting grooves are formed in the outer side of the rotating rod, two limiting blocks are fixedly installed on the inner side wall of the sleeve, and one ends of the limiting blocks extend into the corresponding limiting grooves. According to the multi-angle display device for environmental art design, the problems that most of traditional multi-angle display devices for environmental art design only have rotary adjustment, but due to the absence of all-directional adjustment, certain influence exists when audiences appreciate environmental art works, and the effect of displaying the environmental art works cannot be maximized are solved.

The invention relates to a composite thermal insulation material, in particular to a thermal insulation board detection device. The technical problem to be solved by the invention is to provide the thermal insulation board detection device. The thermal insulation board detection device comprises a supporting bottom board, a left supporting board, a right supporting board, a sliding rod, a top supporting frame, a control display screen, a first detection mechanism, a second detection mechanism, a transmission mechanism and a heat detection mechanism. The left end of the supporting bottom boardis welded to the left supporting board. The right end of the supporting bottom board is welded to the right supporting board. The transmission mechanism is arranged at the top of the supporting bottomboard; the middle of the right end of the left supporting board is connected with the sliding rod. The effect of detecting the impact resistance, the extrusion resistance and the thermal insulation capacity of the thermal insulation board on different types of impact objects is achieved.