31results about How to "With damping properties" patented technology

The invention relates to a low-pulsation series capsule type buffer. The low-pulsation series capsule type buffer can be connected to an outlet pipeline of a hydrostatic test pump when a pressure test is conducted on a loop system. The buffer comprises a shell, a valve body, a capsule and a fungus type valve, wherein one end of the shell is sealed, the valve body is arranged at the other end of the shell, the valve body is communicated with the outline pipeline of the hydrostatic test pump, the capsule is arranged in the shell, a valve rod of the fungus type valve is arranged in the valve body, a valve cap is located in the shell, a partition board is connected to the lower end of the valve rod of the fungus type valve, the interior of the valve body is separated by the partition board in the water flow direction of the outlet pipeline, and a damping hole is formed in the partition board; fluid comes up against the partition board after entering the valve body, a small part of the fluid directly flows out from the damping hole, and the other most part of the fluid rushes to the capsule along a gap between one side of the fungus type valve and the valve body under the blockage of the partition board, then flows back into the valve body along a gap between the other side of the fungus type valve and the valve body after a part of energy is absorbed by the capsule, and finally flows out. Compared with the prior art, the low-pulsation series capsule type buffer has the advantages that the pressure stabilizing effect and the damping effect are good, and the structure is simple.

The invention relates to a quasi-zero stiffness vibration isolation system with a bending moment resistance effect. The quasi-zero stiffness vibration isolation system comprises a base, a support cylinder, a vertical elastic element, a vertical damper and at least four groups of lateral support assemblies, and the vertical elastic element, the vertical damper and the lateral support assemblies arevertically arranged; each group of lateral support assembly comprises at least one horizontal damping device; each horizontal damping device comprises a horizontal damper and a lateral elastic element; each horizontal damper is arranged in the horizontal direct; one end of each lateral elastic element is connected with a cylinder body of the horizontal damper, and the other end of each lateral elastic element is connected with the output end of the horizontal damper; and one end of each horizontal damper is hinged with the base, and the other end of each horizontal damper is hinged with the support cylinder. According to the quasi-zero stiffness vibration isolation system with the bending moment resistance function, a multilayer layout mode with lateral support is adopted and the verticaldamper and the horizontal dampers with variable damping are arranged, so that the quasi-zero stiffness vibration isolation system with the bending moment resistance function, which is close to the vibration isolation in the full frequency band range and has the bending moment resistance and lateral impact load functions is realized, the load is large, and the low-frequency vibration isolation effect is good.

The invention provides a suspension vibration energy driving and braking system, including an inerter assembly, a hydraulic motor coupling assembly, and a driving shaft. The inerter assembly is arranged between a vehicle body and a swing arm. The hydraulic motor coupling assembly comprises a hydraulic motor and a coupling assembly. An input transmission shaft of the hydraulic motor is connected with the coupling assembly. An output end of the coupling assembly is connected with the driving shaft, used to transmit torque. The inerter assembly comprises a double piston-rod cylinder and a one-wayvalve assembly. The one-way valve assembly comprises one-way valves and a change-over switch. The two one-way valves are connected in parallel, and the installation directions of the two one-way valves are opposite. The two one-way valves are connected with the change-over switch. The system can directly convert vibration energy of a vehicle to driving energy or braking energy, so that energy isnot needed to be converted repeatedly. The system has higher efficiency, and can recycle vibration energy to the maximum extent, to achieve an objective of energy conservation and emission reduction for vehicles.

The invention provides a load virtual synchronous generator system applied to an electric vehicle charging pile and a control method. The charging pile is of a bidirectional DC/DC and bidirectional DC/AC two-stage main circuit topological structure; a virtual synchronous generator control technology is applied to the bidirectional DC/AC interface of the charging pile; a virtual impedance technology is introduced into a rotational coordinate system; and therefore, multi-charging pile parallel operation and reactive power equalization distribution is realized, and at the same time, transient overcurrent in a fault state can be effectively suppressed. With the load virtual synchronous generator system and control method of the invention adopted, on the one hand, the whole charging pile has inertia/damping, primary frequency modulation and reactive power voltage regulation functions and externally exhibits the external characteristics of the virtual synchronous generator, and on the otherhand, the failure of the equalization distribution of reactive power caused by a large-scale charging pile cluster can be effectively avoided; and therefore, the improvement of the voltage and frequency stability of a power grid can be benefitted, and a foundation is laid for the connection of larger-scale charging pile loads. The method is simple and effective, and is conducive to engineering application.

The invention discloses an iron-based high-damping alloy with high thermal conductivity and a preparation method thereof. The iron-based high-damping alloy comprises the following components in percentage by weight: 6-8% of Cr, 1-2% of Si, 4-6% of Al, 1.5-2.5% of Hf, 4-9% of Cu, 1-2% of B, 2.5-4.5% of Sn, 2-3% of Co and the balance of Fe. The iron-based high-damping alloy with high thermal conductivity has the mechanical property and damping capacity of the traditional iron-based high-damping alloy: the tensile strength is 540-550 MPa, the elasticity modulus is 80-85 GPa, the yield strength is 240-280 MPa, the elongation is 24-32%, and the SDC is 30-34%. On the basis of ensuring the damping capacity and mechanical property of the existing iron-based high-damping alloy for deformation, the thermal conductivity of the alloy is increased to 110-150 W/m.K from about 60-90 W/m.K and the alloy can be applied to occasions of higher temperature and vibration attenuation on a large scale.

The invention discloses an intelligent pneumatic solid rim lubricating system and a lubricating method using the lubricating system. The lubricating system comprises a control system and a plurality of lubricating mechanisms connected with the control system, wherein the control system comprises a power module, an electric controller and a pneumatic actuator; the electric controller is connected with the power module; the pneumatic actuator is connected with the power module; the pneumatic actuator is respectively connected with the electric controller, an external compressed air source and the lubricating mechanisms; the lubricating mechanisms are respectively close to the rim of a railway vehicle; and a lubricating block is contained in each of the lubricating mechanisms. According to the intelligent pneumatic solid rim lubricating system and the lubricating method, the running condition of the railway vehicle can be detected in real time, and a corresponding lubricating strategy can be output, so that the lubricating system has economical efficiency and instantaneity; and the lubricating mechanisms are driven in a pneumatic mode to lubricate the rim, so that the stability is higher.

The invention provides rubber. The rubber comprises components in parts by weight as follows: 90-110 parts of chloroprene rubber, 6-7 parts of zinc oxide, 5-7 parts of magnesium oxide, 1-2.5 parts of an accelerant, 0.5-1.5 parts of stearic acid, 0.5-1.5 parts of a rubber aging inhibitor, 35-45 parts of thermal cracking carbon black N990, 10-20 parts of spraying carbon black, 0.3-0.5 parts of sulfur and 13-14 parts of dioctyl phthalate. According to the rubber and a manufacturing method thereof, the rubber has good viscoelasticity, remarkable damping and heating effects and good strength and vibration absorbing characteristic and is particularly suitable for being applied to inflatable vibration absorbing products.

The invention discloses an internal recycle balance pressure oil cylinder which is composed of a dual-effect oil cylinder assembly, two check valves and two overflow valves, wherein the dual-effect oil cylinder assembly comprises an oil cylinder body, a piston and a piston rod; two end heads of the piston rod respectively extend out of end covers at two ends of the oil cylinder body; the piston is positioned at the middle of the piston rod and divides the oil cylinder into two oil chambers; the oil chambers at two sides are respectively connected with one check valve and one overflow valve; the oil inlets of the two overflow valves are respectively communicated with the oil chambers at the two sides; and the oil outlet of the overflow valve at one side is communicated with the oil inlet of the overflow valve at the other side. The oil cylinder is mainly used for releasing the stress generated by expansion and contraction of a rigid connecting body in a precision machine tool, has a damping characteristic of starting under certain pressure, and has the advantages that the motion trace amount and the flexibility are very high, the structure is simple and practical, the cost is low, and the oil cylinder is convenient to modulate and install.

The invention relates to a sliding element of a guide device capable of an adjustable roof element of an openable roof and particularly relates to a sliding element (19) of a guide device of an adjustable roof element (2) of a motor vehicle roof capable of being opened in sliding guide fit with the help of a sliding groove (12) on the roof element (2). The sliding element (19) is provided with outer layers (20 and 21) and an inner layer (22), the outer layers can perform elastic deformation with the sliding groove (12) in sliding guide fit mode, and the inner layer supports the outer layers in damping mode under the condition that the outer layers (20 and 21) are loaded through the sliding groove (12).

The invention discloses an impact-resistant interpenetrating network anticorrosive paint. The invention belongs to the technical field of anticorrosive paint. According to the invention, hydroxymethylpolyamide and benzoxazine resin are blended; then, dispersion is realized through liquid polyamide, and the impact-resistant interpenetrating network anticorrosive paint is prepared after a curing agent treatment reaction. The impact-resistant interpenetrating network anticorrosive paint has the advantages of excellent adhesion, toughness, compactness, strong penetration resistance, excellent resistance to corrosion of various chemicals, excellent water resistance and salt water resistance, high modulus, high strength, good heat resistance, low water absorption, flame retardance and the like,does not release small molecules in the curing process, has low shrinkage, low water absorption, low dielectric property and the like, and has good processing and using performances.

The invention discloses a hook type car wall, an elevator car with the car wall and an assembly method of the car wall. The hook type car wall comprises car wall panels, a reinforcing rib and hangingnails, wherein the car wall panels include a main panel and two side panels, holes are formed in the side panels, firstly, the hanging nails are installed on the reinforcing rib, then the hanging nails respectively pass through the corresponding holes in the side panels, finally, the reinforcing rib is fixedly connected with the side panels, and an elastic piece is installed between the reinforcing rib and the car wall panels. According to the hook type car wall, a hook and the reinforcing rib can be produced in advance, the same reinforcing rib can be used for the car walls with different widths and different heights, and the production of the car wall cannot be influenced; the thickness of the reinforcing rib is increased, or the reinforcing rib is bent, so that the connecting strength of the hanging nails can be increased, and the thickness of the car wall panels does not need to be changed, so that the cost is reduced; and the elastic piece has compressibility, so that the hangingnails of the same size are suitable for connecting the car walls with different thicknesses, gaps cannot be generated between the car walls, the connecting strength is increased, and the effect of vibration and noise reduction is achieved.

The invention discloses a connecting joint of a steel frame structure externally-hung wall plate. The connecting joint comprises an upper connecting joint and a lower connecting joint, wherein the upper connecting joint comprises a structural beam, an externally-hung wall plate lower end, first angle steel, a first embedded part and a cup-shaped damping device; and the lower connecting joint comprises a structural beam, an externally-hung wall plate upper end, second angle steel and a second embedded part. According to the connecting joint, safety and reliability of the externally-hung wall plate can be guaranteed, deformation coordination between the externally-hung wall plate and the main body structure can be guaranteed, and connecting joint has the advantages of being simple in structure and convenient to construct.

The invention discloses an internal horizontal damping method applied to an optical fiber inertial navigation system. According to the method, based on the principle of an optical fiber inertial navigation system, an optical fiber inertial navigation horizontal damping network control model is established, a second-order system cut-off frequency band, a system bandwidth band and a connection frequency band are determined, and a horizontal damping correction network is added into an optical fiber inertial navigation system navigation algorithm such that an optical fiber inertial navigation system has damping characteristics, and Shuler oscillation components output by optical fiber inertial navigation attitudes, speeds and positions are inhibited. On the basis of the optical fiber inertialnavigation horizontal damping network control model, second-order system cut-off frequency, system bandwidth, connection frequency band design and the like are determined; the horizontal damping correction network is added into the navigation algorithm of the optical fiber inertial navigation system such that the inertial navigation system has damping characteristics, inherent error oscillation ina strapdown inertial navigation system is autonomously eliminated, and the precision of the strapdown inertial navigation system is improved.

The invention provides a composite damping material, and belongs to the technical field of bridge and building shock isolation bearers. The damping material is prepared by mixing and kneading raw materials including a high viscosity elastomer and aluminum powder or iron powder, wherein a part ratio of the high viscosity elastomer to the aluminum powder or the iron powder is 100:(30-300). The invention also provides an application of the composite damping material in a shock isolation bearer. The composite damping material is prepared through mixing the high viscosity elastomer with the iron powder and/or the aluminum powder, a laminated rubber bearer is filled with the composite damping material, and the friction energy consumption characteristic of the iron powder/the aluminum powder in a core material is used to obtain the shock isolation rubber bearer having a damping characteristic, and the shock isolation rubber can substitute a lead core shock isolation rubber bearer and is more environmentally-friendly. The core material made of the composite damping material has a lower hardness than rubber, and cannot be squeezed between a bearer steel plate and the rubber under the repeated shear action of earthquake, and the damping characteristic is slightly affected by the shear repeating frequency, and is stable.

The invention discloses a damping-variable elastic wheel. The damping-variable elastic wheel comprises a wheel rim, a wheel core and damping elastomers, the wheel rim and the wheel core are separatedin the radial direction to form radial gaps, and are separated in the circumferential direction to form circumferential gaps, the N*2 circumferential gaps are uniformly distributed in the circumferential direction, moreover, N is greater than or equal to 3, one corresponding damping elastomer is compressed in each circumferential gap, moreover, the damping elastomers are separated from the wheel rim and the wheel core in the radial direction and are not in contact with the wheel rim and the wheel core, hydraulic oil in the radially aligned damping elastomers communicates through oil guide pipes in a sealed mode, and damping varying of the damping elastomers is achieved through flowing of the hydraulic oil among the damping elastomers. According to the damping-variable elastic wheel, the radial rigidity of the elastic wheel can be effectively reduced, then the vibration condition of the lower portion of a vehicle spring can be improved, the provided damping characteristic can effectively buffer starting and braking force, the comfort is better, the structural stability and reliability are high, the use safety and practicability are high, and the production cost and maintenance costare low. The invention further provides the damping-variable elastic wheel as well as an assembling method and a rigidity design method thereof.

The invention provides a vertical vibration reduction support. The vertical vibration reduction support comprises an upper seat plate, a middle seat plate and a lower seat plate which are sequentially stacked and connected from top to bottom. The vertical vibration reduction support is characterized in that a multi-frequency vibration absorption assembly capable of absorbing multi-frequency vibration is arranged in the middle seat plate, the multi-frequency vibration absorption assembly is correspondingly in elastic contact with the upper seat plate and the lower seat plate and synchronously deforms along with relative vertical movement of the upper seat plate and the lower seat plate, and the upper seat plate, the middle seat plate and the lower seat plate all have damping characteristics. Vibration of various frequencies can be absorbed, the defect that an existing vertical support is single in vibration absorption frequency is overcome, the damping capacity and the vertical deformation capacity of the whole support are higher, the vibration reduction efficiency of the support is effectively improved, the damping capacity and the vertical deformation capacity are higher, the support is simple in internal structure and not prone to being damaged, and the service life of the support is prolonged. The invention further provides a vibration reduction method of the vertical vibration reduction support.

The invention discloses a short-pier shear wall with an embedded prestressing force combination oblique supporting member. The shear wall comprises an upper layer beam, a lower layer beam, a short-pier wall pier and prestressing force combination oblique supporting members; the upper layer beam and the lower layer beam are fixedly connected with the short-pier wall pier in an I shape; two groups of the prestressing force combination oblique supporting member are arranged and located in the short-pier wall pier and presented as a herringbone shape or a V shape, an anchoring end of the prestressing force combination oblique supporting member is connected with the upper layer beam, and a tensioning end of the prestressing force combination oblique supporting member is connected with the lowerlayer beam through an anchoring plate. According to the shear wall, a prestressing force combination oblique supporting member is applied to the shear wall, a novel short-pier shear wall structure isconstructed by using a prestressing force technology and a high-damping material, the constitution is simple, the construction is convenient, the shear wall can be applied to parts with important orhigh-performance demands according to shock-resisting demands of building structures through reasonable constitution and connection, which is conformed to the developing tendency of a novel structuralsystem in high and ultra-high buildings and the demands of earthquake resisting and disaster reducing industries in China, and the shear wall has significant engineering actual meaning and social meaning.

The invention discloses aluminum-based high damping alloy with the high heat-conducting property and a preparation method thereof. The aluminum-based high damping alloy comprises, by weight, 2%-8% of Si, 1%-2% of Cu, 10%-40% of Zn, 1%-6% of Sn, 1%-2% of In, 0.5%-1% of Co, 0.2%-0.8% of Hf, 0.1%-0.3% of B and the balance Al. According to a casting aluminum-based high damping alloy material with high thermal conductivity and provided by the invention, the material has the mechanical property and damping property of traditional aluminum-based high damping alloy, the tensile strength is 320-360MPa, the elasticity modulus is 78-89GPa, the yield strength is 170-210MPa, ductility is 0.2%-5%, and SDC is equal to 4%-20%. The heat-conducting property which cannot be achieved by the traditional aluminum-based damping alloy is further achieved. On the basis of guaranteeing the damping property and mechanical property of existing casting aluminum-based high damping alloy, the thermal conductivity of the alloy is increased to 190-210W/m.K from about 65-98W/m.K, and thus the aluminum-based high damping alloy and the preparation method thereof can be applied to the places where the temperature is high and vibration attenuation is required in a large-scale mode.