32results about How to "Good damping function" patented technology

It is an object of the present invention to provide a vibration-damping composition having a high loss modulus (E'') and loss factor (eta) in a high temperature region, and serviceable over a wide temperature range in a high temperature region. Provided is a (1) vibration-damping composition whose matrix material of organic polymer contains a vibration-damping agent, or (2) vibration-damping composition whose matrix material of organic polymer contains a vibration-damping agent, and inorganic and / or organic filler, wherein the vibration-damping agent is of a polyvinyl phenol-based resin having a recurring unit represented by the general formula [I].

The invention relates to a high-pressure accumulator (1) for internal combustion engines for storing highly pressurized fuel. The high-pressure accumulator (1) comprises an accumulator pipe (2) with an accumulator chamber (3) formed in the accumulator pipe (2). The high-pressure accumulator (1) comprises a supply connection (7) for supplying highly pressurized fuel and at least one discharge connection (4) for discharging highly pressurized fuel. A honeycomb structure (10) is arranged in the accumulator chamber (3).

The invention belongs to the technical field of bridge expansion devices, and relates to a sealing protection structure for a road bridge expansion device. The expansion device consisting of deformed steel and a sealing rubber belt is full of an elastic filling material; the deformed steel is embedded into the upper top of a bridge beam body; an expansion joint is formed on the beam body; the sealing rubber belt is clamped on the deformed steel on both sides; a V-shaped space is formed on the upper part of the sealing rubber belt; the elastic filling material is placed into the V-shaped space formed on the upper part of the sealing rubber belt, and is flush with the upper top surface of the bridge beam body; the elastic filling material is bonded together with the deformed steel; the filling material is a high polymer material, and is vulcanized into an elastomer in a natural state. Due to the adoption of the sealing protection structure for the road bridge expansion device, the service life of the road bridge expansion device is prolonged, the maintenance difficulty of the road bridge expansion device is lowered, the construction period is shortened, the road smoothness is improved, the influence of jumping is lowered, and the service life of a bridge is prolonged.

The patent of the present invention provides a composite spherical shell of a spherical robot. The spherical shell composite structure includes a rigid matrix shell and a flexible coating layer. The rigid matrix shell is a structural fiber-reinforced composite material, which is composed of reinforcing fibers and a thermosetting resin matrix. Honeycomb stiffeners are arranged on the inner surface of the rigid matrix shell. The stiffener material is thermosetting resin, which can be combined with the rigid matrix shell. Integrated thermoforming; flexible coating layer adopts copolymer elastomer material. The lightweight composite spherical shell has high specific strength, specific stiffness, rolling friction coefficient, impact energy dissipation coefficient and quick repair function. The spherical shell and the corresponding spherical robot are used as an open automatic control platform, and a variety of functional spherical robots can be developed on the basis of the spherical robot composite spherical shell.

The invention discloses a high dynamic stiffness-static stiffness ratio rubber shock absorber used in a high speed train. The high dynamic stiffness-static stiffness ratio rubber shock absorber used in the high speed train comprises a metal cover, a metal pin bush and a vulcanized rubber layer. The vulcanized rubber layer is attached between the metal cover and the metal pin bush. The cross section of the inner wall of the metal cover is an inclined plane. The cross section of the inner wall of the metal pin bush is an inclined plane. The vulcanized rubber layer is an annular cone. The shock absorber can obtain different stiffness performances by adjusting the degree of the inclined angle of the cross section of the inner wall of the metal cover. Due to the fact that the vulcanized rubber layer is of a uniform thickness structure, influence on service life of the shock absorber caused by larger local stress is avoided when the shock absorber is used. The high dynamic stiffness-static stiffness ratio rubber shock absorber has a larger dynamic stiffness and a smaller static stiffness and can perform the function of shock isolation, noise reduction and shock attenuation well.

Provided is a bridge expansion joint structure, comprising a bridge body (2, 3) and an expansion joint (1). The expansion joint (1) divides the bridge body (2, 3) into a first bridge body (2) and a second bridge body (3). A first bearing step (21) is formed on the first bridge body (2), and the first bearing step (21) is provided with a first fixed pillar (22). A second bearing step (31) is formed on the second bridge body (3), and the second bearing step (31) is provided with a second fixed pillar (32). Lateral faces of the first and second bearing steps (21, 31) are respectively fixedly connected to a C-shaped steel plate (4). An expansion joint connector (6) is provided between the first bridge body (2) and the second bridge body (3). The expansion joint connector (6) comprises an upper bearing body (61) and a lower supporting body (62), and the upper bearing body (61) and the lower supporting body (62) are both provided with reinforcing ribs (63). A cover plate (7) is provided above the expansion joint (1). Elastic filling materials (8) are filled between the expansion joint (1) and the expansion joint connector (6). The bridge expansion joint structure meets the requirement of road expansion deformation, is structurally secure, has a good bearing capacity, provides a good smooth and comfortable sensation during driving, and is also easy and convenient to install, inspect and maintain.

The invention discloses a suspension device for a heavy-duty truck cab, relating to the technical field of truck manufacturing. The suspension device comprises a front suspension device and a rear suspension device, wherein the front suspension device comprises a front suspending stabilizer bar, front suspending vibration dampers and helical springs; the rear suspension device comprises rear suspending vibration dampers, a rear suspending arched beam and a rear suspending floating beam; the rear suspending vibration dampers are air spring vibration dampers; the two ends of the rear suspending vibration dampers are respectively hinged on the lower parts of hydraulic lock installation plates and rear suspending vibration damper installation plates vertically; and a rear suspending tie bar is installed between the hydraulic lock installation plates and the rear suspending arched beam. Compared with the prior art, the suspension device can solve the problems of poor comfort, insufficient stability and poorer operation safety of the truck cab.

The invention discloses a high-damping self-compaction concrete which is composed of P.O42.5 ordinary Portland cement, composite reinforcing powder, emulsified asphalt, polycarboxylic acid high efficiency water reducing agent, mixing water, composite deformation component, II-zone grade river sand with the fineness modulus of 2.6-3.0, and limestone gravel with the particle size of 5-20mm. Every cubic meter of concrete comprises the following components in parts by mass: 16 parts of cement, 7.8 parts of composite reinforcing powder, 0.8-1.0 part of emulsified asphalt, 7.5 parts of mixing water, 0.22-0.27 part of water reducer, 1.6-1.7 parts of composite deformation component, 29-30 parts of river sand and 36-37 parts of limestone gravel. The high-damping self-compaction concrete has the advantages of excellent damping function, excellent shock resistance, higher mechanical strength, low elastic modulus and obvious technical and economical effects, and especially can effectively improve the service behavior and service life of basic structures subjected to impact, vibration and other repeated mobile load actions, such as high-speed railway track structures, bridge structures and other engineering structures.

The invention provides a conductive rubber composite material with good damping property and a preparation method thereof. The composite material has good conductivity and can reduce weight of rubber products. The composite material has polyaniline / perlite composite particles which are evenly distributed in a rubber matrix. The composite particles are perlite particles with polyaniline in pores and on surfaces, are 1-5mm and account for 25-50% of the composite material by volume. The rubber matrix can be styrene butadiene rubber matrix or butyl rubber matrix.