32results about How to "Meet the rigidity" patented technology

A vibration-isolating rubber composition which comprises (A) a diene rubber, (B) a silica that has (a) a silanol group density of the silica surface of 3.0 groups / nm2 or more as determined by the Sears' titration method, (ss) a mean particle diameter of 10[mu]m or less, and (?) a BET specific surface area of 15 to 60m2 / g, (C) a silane coupling agent having a specific structure, and (D) zinc monomethacrylate and / or a specific mono(meth)acrylate, and in which the content of the component (B) is 10 to 100 parts by weight per 100 parts by weight of the component (A). Therefore, the vibration-isolating rubber composition exhibits excellent heat resistance, durability and stiffness and a low dynamic multiplication (a low ratio of dynamic spring constant to static spring constant).

An experimental device for an acoustic metamaterial plate structure belongs to the technical field of structural elements, and is mainly used to solve the problem that the prior art lacks a dedicated experimental device in the process of dynamic experimental research on an acoustic metamaterial plate structure, thereby affecting the accuracy of experimental data. In the present invention, two fixture brackets are arranged on both sides of the metamaterial plate oppositely, each fixed pressure plate is installed on the top of a fixture bracket, and a substrate in the metamaterial plate is arranged between the fixture bracket and the fixed pressure plate, and The metamaterial board is fixedly installed on the fixture bracket, each positioning rod is arranged on one side of the two fixture brackets, and each positioning rod is fixedly connected with the two fixture brackets, and each fixture bracket is connected to the vibration isolation through N connectors. The foundation track is fixedly connected. The invention is mainly used as an experimental device for testing the dynamic performance of the acoustic metamaterial plate structure.

The invention discloses a speed bump for municipal engineering. The speed bump comprises a shaft body base body and a shaft body base split body, and is of a square cavity structure, the shaft body base body and the shaft body base split body are symmetrically distributed and have the same internal structure, a telescopic shaft body is fixed to the center of the bottom of the shaft body base body,a reset spring sleeves the outer side of the telescopic shaft body, a shaft cap sleeves the top of the telescopic shaft body, a supporting pillar is arranged at the top of the shaft cap, and a speedbump body is connected to the top of the supporting pillar. In the running process of a vehicle which runs at a normal speed, the hindering effect of the speed bump on the vehicle cannot occur, and trouble of a driver in normal driving is reduced; a vehicle which overspeeds cannot be hindered at the first speed bump but is hindered from running by the second speed bump, inconvenience is brought topassengers and a driver in the vehicle, and the driver is effectively reminded to abide by the traffic rule of speed limiting.

The invention discloses a front wheel cover side plate assembly for an automobile. The assembly comprises a front wheel cover side plate, a front longitudinal beam, a front shock absorber mounting plate, a connecting plate and a front fender mounting bracket which are arranged on the automobile body in a lateral symmetry way, wherein the front wheel cover side plate has a cavity structure with a top opening; the upper edge of the front longitudinal beam is fixedly connected to the lower end of the front wheel cover side plate; the front edge of the front shock absorber mounting plate is fixedly connected to the rear edge of the front wheel cover side plate; the connecting plate is fixedly connected with the upper end of the front wheel cover side plate and the upper end of the front shockabsorber mounting plate respectively to form a closed cavity; the rear edge of the front fender mounting bracket is fixedly connected with the front edge of the front wheel cover side plate; and the lower end of the front fender mounting bracket is fixedly connected with the upper edge of the front longitudinal beam. The assembly not only rationally and effectively transfers the impact load from the front longitudinal beam to the rear part and the upper part of the automobile body during direct impact and biasing impact, but also ensures the installation strength, the accuracy and the NVH performance of the installation points on the left and the right suspension sides of an engine and the front fender mounting bracket.

This invention provides an aluminum alloy sheet for a recording medium case shutter which satisfies all the characteristics.The shutter comprises following materials: aluminum alloy substrate, in which the aluminum alloy contains 2.2-2.8 mass % of Mg, 0.35-0.55 mass % of Mn and 0.1-0.4 mass % of Fe; on a surface which is the shutter outer surface side of an aluminum alloy substrate, a chromate film of 5 to 50 mg / m<2> in terms of chromium coating weight is formed as a first layer, and a acrylate modified polyester urethane based resin coating film is formed as a second layer on the surface of the shutter outer surface side; the synthetic resin coating film contains an acrylate modified polyester urethane based resin, inorganic particles with an average particle size of 10 mum or less, and of 5 to 20 parts by weight based on 100 parts by weight of the acrylate modified polyester urethane based resin, and a polyethylene oxide based lubricant of 0.5 to 3 parts by weight based on 100 parts by weight of the acrylate modified polyester urethane based resin. The synthetic resin coating film is formed with a film thickness of 0.5 to 3 mum.

The embodiment of the invention provides a temporary bearing plate, a manufacturing method of the temporary bearing plate and a manufacturing method of a packaging substrate. Specifically, the temporary bearing plate comprises a first bearing core layer, a first copper foil layer on the first bearing core layer, a second bearing core layer on the first copper foil layer and a second copper foil layer on the second bearing core layer; the first copper foil layer comprises a first outer-layer copper foil and a first inner-layer copper foil which are physically laminated, and the second copper foil layer comprises a second outer-layer copper foil and a second inner-layer copper foil which are physically laminated.

The invention provides a double-sided composite card paper and a preparation method thereof. A lining pulp layer is covered on one side of a core pulp layer, a bottom pulp layer is covered on the other side of the core pulp layer and a surface pulp layer is covered on the lining pulp layer; or lining pulp layers are covered on two sides of a core pulp layer, a surface pulp layer is covered on the lining pulp layer on one side, and a bottom pulp layer is covered on the lining pulp layer on the other side. Common waste paper pulp (office waste paper, common waste paper boards and the like) is used for replacing wood pulp to serve as core pulp, and waste paper de-inking pulp and waste white paper edge pulp are used for replacing wood pulp to serve as lining pulp so as to save the cost; each layer is specifically quantified. The obtained double-sided composite card paper has heavy handfeel and crisp paper surface, press molding and embossing processes required for processing and molding have better implementing effects, the expressed levels are richer, the dependency of the product on operating workers is furthest reduced, and effective expansion of the capacity and increment of the economic benefit are furthest realized.

Provided is an industrial two-layer fabric satisfying basic characteristics of a fabric, such as rigidity, wear resistance, dewaterability, mark suppression, and low water retention for reducing the amount of water retained. The industrial two-layer fabric pertaining to the present invention has at least a first structure and a second structure in the weave repeat thereof, the first structure being formed by a combination of two upper-surface-side warps and a single lower-surface-side warp, the second structure being formed by a single upper-surface-side warp and a single lower-surface-side warp, the first structure and the second structure being disposed adjacent to each other, the upper-surface-side warps in the first structure being formed by a warp binding yarn having the function of binding an upper-surface-side fabric and a lower-surface-side fabric, the combination of two upper-surface-side warps forming the first structure being disposed adjacent to each other and constitutinga partial rib weave at the surface of the upper-surface-side fabric, the diameter of the lower-surface-side warp being larger than the diameter of the upper-surface-side warp forming the first structure, and the upper-surface-side warp in the second structure being formed by a flat warp.

An aromatic polycarbonate resin composition which comprises an aromatic polycarbonate resin (ingredient (A)) and a polybutylene terephthalate resin (ingredient (B)) and optionally further contains a rubbery polymer and / or an inorganic filler, characterized in that the amounts of the aromatic polycarbonate resin (ingredient (A)) and the polybutylene terephthalate resin (ingredient (B)) are 51-99 parts by weight and 1-49 parts by weight, respectively, per 100 parts by weight of the sum of the aromatic polycarbonate resin (ingredient (A)) and the polybutylene terephthalate resin (ingredient (B))and that the polybutylene terephthalate resin (ingredient (B)) has a titanium compound content of 1-75 ppm, excluding 1 ppm, in terms of titanium atom amount and a terminal carboxy group content of 39 [mu]eq / g or lower. This aromatic polycarbonate resin composition has an excellent balance among various properties, i.e., is satisfactory in all of flowability, rigidity, impact resistance, chemicalresistance, fatigue characteristics, heat resistance, thermal stability in residence, and suitability for recycling.