12results about How to "Stable damping force" patented technology

A novel external electromagnetic valve assembly of a shock absorber comprises an electromagnetic assembly and a valve body assembly, a guide-in valve sub assembly of the valve body assembly adjusts flow through a throttling valve piece, then adjustment of damping bandwidth is achieved, and the electromagnetic assembly is matched with a pilot hole and a damping hole of a main valve element of the valve body assembly through an electromagnetically-driven conical rod. The damping force can be stably established, the concept is novel, the design is ingenious, the stable damping force can be rapidly provided, and the effect is remarkable.

The invention provides a hydraulic torque conversion stabilizer bar device and an active suspension system, and the hydraulic torque conversion stabilizer bar device comprises a hydraulic torque converter which comprises an input connecting end and an output connecting end; the driving motor is in transmission connection with the input connecting end and is used for driving the hydraulic torque converter to operate; one end of the stabilizer bar assembly is in transmission connection with the output connecting end, and the other end is in transmission connection with a shock absorber assembly of the automobile; the stabilizer bar assembly further comprises a torque sensor, and the torque sensor is used for detecting torque force borne by the stabilizer bar assembly. And the controller is in signal connection with the driving motor and the torque sensor, and can control the operation of the driving motor according to a signal fed back by the torque sensor. According to the scheme, the rigidity, the height and the damping force of the suspension system can be adjusted according to actual requirements, more stable and accurate control experience is provided for a driver, and meanwhile the riding comfort is kept. The method is particularly important for medium and large vehicles, and is also suitable for limit driving modes and complex road conditions.

The application discloses an overload protection viscous damper with a monitoring function and relates to the technical field of dampers, which comprises a damper body, a piston rod arranged in the damper body, bushings symmetrically arranged on the inner side of the damper body, a storage cavity and a working cavity separated by the bushings, an overflow port, an overflow valve arranged in the overflow port, a first pressure gauge fixedly installed in the storage cavity, a second pressure gauge fixedly installed in the storage cavity and a third pressure gauge fixedly installed in the working cavity. The damper is kept stable by opening and closing of the overflow valve, and even if the temperature influences the medium flow, the medium cannot flow into the storage cavity through the overflow valve due to the arrangement of the adjusting assembly. In addition, the medium flow rate is gentle due to the arrangement of the porous cylinder, so that the damping force fluctuation is avoided.

The invention relates to the technical field of steel wire tension control, in particular to a constant tension control device for releasing a steel wire, which comprises a wire coil and an oil cylinder coaxially positioned in the wire coil and relatively fixed, fluid is stored in the oil cylinder, a plurality of damping bodies are arranged in the oil cylinder along the axis direction of the oil cylinder, and the damping bodies are connected with the wire coil. The damping body is used for limiting the rotating speed of the wire coil; the flow limiting channel is used for limiting the flow of fluid, so that the movement speed of the rotating shaft and the fan plate is limited, damping force is provided for the wire coil, the speed of releasing a steel wire by the wire coil and the tension of the steel wire are conveniently controlled, the abrasion phenomenon of a friction plate in a traditional mode can be avoided, and stable damping force is conveniently provided for the wire coil; meanwhile, when the steel wire releasing speed is increased, the fluid flow speed is increased, and the reverse limitation of the flow limiting channel on the fluid is enhanced, so that the damping effect on the wire coil is enhanced, and the steel wire releasing speed of the wire coil is always kept within a specified range.

This invention discloses a sleeve assembly and a steering column for use in a steering column, comprising a sleeve, a cover, an energy-absorbing element, and a connecting element; one side of the sleeve is provided with a mounting portion having a mounting cavity, and the energy-absorbing element is disposed in the mounting cavity; the energy-absorbing element includes a top plate, and the connecting element is provided with a protrusion, the protrusion having a protrusion bevel; the protrusion passes through a cover through hole on the cover and extends into the mounting cavity; in the initial state, the rear end of the top plate is located between the upper and lower ends of the protrusion bevel, and there is a preset gap between the protrusion bevel and the rear end of the top plate. The sleeve assembly and steering column disclosed in this invention allow the damping force generated by the top plate of the energy-absorbing element to remain stable during deformation and collapse, thereby providing stable damping force to achieve a stable energy absorption effect.

A combined anti-collision guardrail structure belongs to the technical field of highway traffic facilities. The combined anti-collision guardrail structure includes an anti-collision pad, an energy-absorbing extrusion combined structure, an arc-shaped thin-walled energy-absorbing steel plate, an energy-absorbing filling material, a connector, a connecting plate, a connecting fixed rod, a rotating anti-collision barrel, a connecting crossbeam, an inner cylinder, an anti-collision shock-absorbing energy-absorbing material layer, a hollow area, an anti-collision soft outer cylinder, a vertical connection fixed pile and an energy-absorbing extrusion cavity. The present invention can force the vehicle body to change direction when a collision occurs between the vehicle body and the guardrail, and the installation operation of the present invention is significantly simplified, and the assembly speed is fast, which is conducive to promoting the industrialization process. The anti-collision and shock-absorbing coordinated energy-absorbing capacity of the present invention is strong, and the impact force can be fully dissipated. The anti-collision pad provided by the present invention can play a buffering and protective role. The energy-absorbing extrusion combined structure, energy-absorbing filling material, anti-collision shock-absorbing energy-absorbing material and anti-collision soft outer cylinder provided by the present invention can perform shock absorption and energy consumption, can greatly buffer the impact force, and achieve multiple shock absorption effects.

The invention relates to the technical field of Bluetooth sound boxes, in particular to a Bluetooth sound box with an NFC quick pairing function, which comprises a sound box main body, a suction cup is arranged at the bottom of the sound box main body, a compensation device is arranged on the sound box main body, the compensation device is communicated with the interior of the suction cup, and the compensation device is used for extracting air in the suction cup; a control device is arranged on the sound box main body, the control device controls the start and stop of the compensation device according to the storage amount of air in the suction cup, the compensation device comprises a mounting seat fixedly mounted at the bottom of the sound box main body, and the suction cup is fixedly mounted at the bottom end of the mounting seat; a mounting cavity is formed in the mounting seat, a communicating hole is formed in the outer side wall surface of the mounting seat, and the communicating hole is communicated with the mounting cavity. The placement stability of the Bluetooth sound box on the placement plane is improved, and the problem that an existing Bluetooth sound box is low in anti-skid performance and reliability is solved.

This application provides a solenoid valve, including a sleeve, a stationary iron core, an armature assembly, and an excitation assembly. The sleeve defines a receiving cavity, and the sleeve has a first vent and a second vent connected to the receiving cavity. The stationary iron core is fixed to the sleeve. The armature assembly is movably disposed in the receiving cavity along the axial direction of the sleeve. The armature assembly includes an armature and a plug. The armature is arranged along the axial direction of the sleeve, and the plug includes a plug head and an outwardly protruding damping portion. The excitation assembly generates a force that causes the armature and the plug to move away from the first vent, so that the plug head disengages from the first vent. The sleeve has a damping sleeve extending along its axial direction, and the outwardly protruding damping portion protrudes from the surface of the armature and abuts against the inner wall of the damping sleeve. The armature assembly generates a damping force that hinders its movement during movement. The solenoid valve of this application can slow down the movement speed of the armature assembly, reduce noise and vibration, and improve the stability of the solenoid valve.

The invention discloses a vehicle shock absorber lubricating oil composition, and also discloses a preparation method of the vehicle shock absorber lubricating oil, the composition comprises the following components by mass: 83.37-88.69% of base oil, 11%-16% of a viscosity index improver, 0.3-0.6% of a gear oil composite additive, and 0.01-0.03% of an anti-foaming agent, and the sum of the mass percentages of the components is 100%. The vehicle shock absorber lubricating oil composition has the advantages of few types of raw materials, simple production process, easy operation and excellent cost performance, has excellent viscosity-temperature performance and low-temperature fluidity, excellent extreme pressure wear resistance and shear stability, excellent anti-oxidation stability, excellent rubber compatibility and anti-foaming property, and can be used as a vehicle shock absorber lubricating oil composition. The shock absorber can be used for various high-grade motorcycles, cars, wagons, new energy vehicles, railway locomotives and other vehicles, and provides a stable and long-lasting shock absorption effect for vehicle shock absorbers.

The invention relates to a shock absorber, a suspension system and a vehicle. The shock absorber comprises a cylinder body and a piston rod, and one end of the cylinder body is open; the piston rod is arranged in the cylinder body in an axial reciprocating motion mode, one end of the piston rod extends out of the opening, the piston rod is provided with a channel extending in the axial direction, one end of the channel is communicated with the outside, and the other end of the channel is communicated with the working cavity of the cylinder body. External oil enters the cylinder body through the channel, or the oil in the cylinder body flows out of the working cavity through the channel to change the pressure of the working cavity, so that the shock absorber has more stable damping force, and the operation stability and comfort of a vehicle are better balanced. The vehicle can run on a bumpy road at a high speed for a long time, the service life of parts on the vehicle can be prolonged, and the running safety can be improved.

The utility model discloses a high-speed high-precision two-dimensional motion platform for a bonding machine, and relates to the technical field of motion platforms for bonding machines, the high-speed high-precision two-dimensional motion platform comprises a Y-axis motor base and an X-axis motor base, the rear side of the top end of the Y-axis motor base is fixedly provided with a Y-axis motor fixed-coil slide rail, the upper end of the Y-axis motor fixed-coil slide rail is slidably provided with a Y-axis voice coil motor, and the X-axis voice coil motor is provided with a Y-axis voice coil. An X-axis motor fixed coil sliding rail is fixedly installed at the top end of the X-axis motor base, an X-axis voice coil motor is installed at the upper end of the X-axis motor fixed coil sliding rail in a sliding mode, a Y-axis voice coil motor fixed coil damper is installed at the lower end of the Y-axis voice coil motor, and an X-axis voice coil motor fixed coil damper is installed at the lower end of the X-axis voice coil motor. According to the device, the movement direction is determined through the X-axis motor sliding rail and the Y-axis motor sliding rail, high-speed and high-precision movement is achieved through cooperation of the two voice coil motors, vibration reduction is achieved through the magnetic dampers at the lower ends of the motors in the movement process, and a workpiece is prevented from directly colliding with a terminal of the sliding rails.

The invention provides a crash barrier with a sound insulation function, which belongs to the technical field of crash protection and sound insulation, and comprises a sound insulation wall panel and a crash barrier monomer. The energy-absorbing assembly is composed of an upper sealing plate, a lower sealing plate, and drum-shaped energy-absorbing steel plates on both sides. The internal cavity is an energy-absorbing cavity. The sound insulation wall panel is vertically inserted into the energy-absorbing assembly. The cable passes through the drum-shaped energy-absorbing steel plate and the sound insulation wall panel and is fixed with fixing bolts. An energy-absorbing assembly panel is arranged on the outer side of the energy-absorbing assembly. Two adjacent crash barrier monomers are connected by inserting pre-buried steel bars into corresponding steel bar holes. The invention has the beneficial effect of effectively combining sound insulation and crash protection, having good economic effect and good integrity. While achieving good sound insulation and noise reduction effects, the impact energy can be absorbed, the impact force of the car can be greatly buffered, and stable damping force and shock-absorbing energy-absorbing capacity can be provided.