7results about How to "Increase damping force" patented technology

The invention relates to the technical field of aircraft hydraulic systems, in particular to an anti-deflection rotating joint with a hose, which comprises two rotating pairs, the rotating pairs comprise connecting seats and inlets and outlets, the rotating pairs are provided with circulation channels, fluid circulates through the circulation channels and the inlets and outlets, the hose is mounted on the inlets and outlets, and the hose is connected with the connecting seats. The hose assembly is used for communicating the circulation channels of the two revolute pairs, the hose can deform according to deviation of the revolute pairs and keep the circulation channels of the two revolute pairs communicating with each other, the damping sleeve is provided with a hollow cavity, and a traditional metal pipeline is replaced with the hose assembly; axial, radial and angular displacements generated by offset load are absorbed and compensated by utilizing the flexibility characteristic of the hose, meanwhile, progressive limiting is realized by matching with the damping unit, and before the radial offset of the revolute pair is close to the maximum deformation value of the hose, the damping force is increased along with the increase of the offset, so that the influence on the sealing property of the joint of the hose and the revolute pair is avoided; and the effects of uniform stress and smooth rotation of the sealing surface are achieved.

The utility model discloses a motorcycle front magnetorheological damper and motorcycle, including working cylinder, guider assembly, piston assembly, floating piston assembly, magnetorheological fluid, outer tube support assembly, ECU control unit and sensor, guider assembly, piston assembly and floating piston assembly are located in the inside of working cylinder, and piston assembly includes built -in solenoid and damping passage, and damping passage penetrates the upper and lower end of piston assembly, and magnetorheological fluid fills the working cavity between guider assembly and floating piston assembly, and, outer tube support assembly is at least partially coated in the outside of working cylinder, and is connected with guider assembly, and ECU control unit and solenoid electric connection are used for the signal adjustment input to solenoid's current according to sensor, like this through solenoid and the combination of magnetorheological fluid, ECU control unit can real -time regulation magnetic field intensity, change the viscosity of magnetorheological fluid to dynamic control damping force.

The utility model discloses an anti-seismic composite damper based on self-healing-metal buckling-eddy current coupling. The anti-seismic composite damper comprises a connecting rod assembly, a damping wall assembly and a rotating support. The connecting rod assembly comprises a rigid connecting section, a slidable inserting section and a permanent magnet, and the rigid connecting section and the slidable inserting section form buckling guide fit through a preset path; the damping wall assembly is of a multi-layer composite structure and comprises a shell, a cooling layer and a magnetic conductive layer, and an inner cavity of the damping wall assembly wraps the connecting rod assembly to form a magnetic flux loop. The rotating support is provided with a rotating limiting structure, and the two ends of the rotating limiting structure are connected with the connecting rod assembly and an external structure correspondingly. According to the utility model, the elliptical cavity is preset in the plastic base body, and the elliptical cavity is broken to release the self-healing agent when the displacement of the connecting rod exceeds a threshold value; after the self-healing agent flows out, the self-healing agent chemically reacts with the plastic matrix to be cured into a solid, and displacement is hindered through mechanical occlusion; the phase change resistance generated in the curing process achieves self-adaptive adjustment of small-earthquake low resistance and large-earthquake high resistance, and the damping force can be remarkably enhanced during strong earthquakes and aftershocks.

The utility model relates to the technical field of aluminum profile processing, and discloses an automobile seat aluminum profile extrusion device with high compression resistance, which comprises a mounting seat, an upper die and a lower die, the top of the mounting seat is in bolted connection with two shells, inner cavities of the two shells are provided with main hydraulic chambers, a first-stage sub-chamber is nested in the main hydraulic chamber, and a second-stage sub-chamber is nested in the lower die. A second-stage sub-cavity is embedded in an inner cavity of the first-stage sub-cavity, a first throttling hole is formed in one end of the first-stage sub-cavity, second throttling holes are formed in the two ends of the second-stage sub-cavity, a piston is slidably connected to an inner cavity of the main hydraulic cavity, and an ejector rod is fixedly connected to an inner cavity of the piston. According to the utility model, the movement speed of the ejector rod can be controlled by adopting the shell with a multi-stage hydraulic chamber structure and a multi-stage throttling design, and in the lifting process of the ejector rod, hydraulic oil sequentially passes through all stages of sub-chambers with throttling holes with different diameters to gradually consume energy, so that the movement speed of the ejector rod is effectively inhibited and adjusted.

This utility model relates to a shock absorber and its vehicle, comprising: a cylindrical body, a piston, and a coil; the cylindrical body is a conductor structure and has a guide cavity; the piston is located within the guide cavity and is telescopically connected to the cylindrical body, and the piston can extend and retract relative to the cylindrical body along the axial direction of the guide cavity; the coil is located within the guide cavity and connected to the piston, and the coil is used to connect to a power source. This shock absorber and its vehicle can enhance the damping force of the shock absorber when the vehicle travels on special road surfaces, thereby ensuring vehicle comfort and handling.

A pre-pressing large-stroke composite shear type wall toe damper comprises a plurality of restraining plates A, restraining plates B and viscoelastic bodies which are arranged in parallel in a staggered mode, and the viscoelastic bodies are fixedly connected with the restraining plates A and the restraining plates B; pre-compression strain is applied to the viscoelastic body through the pre-tightening bolt, pressure stress is generated in the viscoelastic body, and the initial bearing capacity and damping force of the wall toe damper are improved; meanwhile, a lead rod is arranged among the restraining piece A, the restraining plate B and the viscoelastic body in a penetrating mode, and the initial bearing capacity and damping force of the wall toe damper are further improved; the large-stroke composite shear wall toe damper with the pre-pressing function has the advantages of being high in initial bearing capacity, capable of absorbing earthquake energy during small displacement, large in shear deformation range, capable of solving stress concentration at the corner of the shear wall toe and the like, and does not need to be replaced after an earthquake, so that the large-stroke composite shear wall toe damper with the pre-pressing function has extremely high application and popularization value in high-rise and super high-rise buildings.

The application provides an X-shaped outrigger truss lever type negative stiffness energy dissipation outrigger system, relates to the technical field of negative stiffness energy dissipation shock absorption in the technical field of building engineering, and comprises a core tube, a frame column, an X-shaped outrigger truss and a double shock absorption component, wherein the double shock absorption component comprises a displacement amplification lever, an upper damper, a lower damper, an upper pre-pressing spring and a lower pre-pressing spring; in an initial state, the axis of the upper pre-pressing spring, the hinge joint of the upper end of the displacement amplification lever and the upper damper, the hinge joint of the lower end of the displacement amplification lever and the lower damper, and the axis of the upper pre-pressing spring are in the same straight line. The application combines the displacement amplification mechanism of a lever type mechanism and the lever type negative stiffness displacement amplification mechanism, has a double displacement amplification effect, the pre-pressing force is entirely applied to a non-load-bearing component, and two groups of pre-pressing springs and dampers can be arranged on one outrigger truss to generate a double damping energy dissipation effect.