20results about How to "Large damping force" patented technology

The invention belongs to the field of overhead transmission lines of power systems, and relates to a vibration damping spacing device for multiple insulator strings, which comprises a horizontal vibration damping connecting component connected with the insulator strings in the horizontal direction, and the horizontal vibration damping connecting component comprises a connecting plate, a first vibration damping assembly, a second vibration damping assembly and a third vibration damping assembly. The upper portions and the lower portions of the ends, close to each other, of the two connecting plates are movably connected with one end of a first vibration reduction assembly, the other end of the first vibration reduction assembly is movably connected with small triangular plates, a second vibration reduction assembly is movably connected between the two small triangular plates, and the two sides of the second vibration reduction assembly are movably connected with one ends of two third vibration reduction assemblies. And the other end of the third vibration reduction assembly is movably connected with one side of the first vibration reduction assembly, so that a triangular structure is formed among the three vibration reduction assemblies. According to the invention, the absorption efficiency of vibration energy is high, and the vibration reduction effect is better especially for large-amplitude vibration and swing between multiple insulator strings.

According to the radar labeling tool provided by the utility model, the return spring is arranged at the joint of the rotating shaft and the shaft sleeve, and the return spring not only can reduce the gap between the rotating shaft and the shaft sleeve, but also can increase the damping force of the cover plate, so that the surface of a radar is prevented from being damaged by the cover plate due to overlarge overturning force; when labeling is needed, the radar is arranged in the containing groove, the top face of the radar is higher than the top face of the tool base, then the cover plate is rotated to make the inner wall of the cover plate abut against the top face of the radar, the multiple positioning holes correspond to the multiple positioning pins one to one and are matched with the multiple positioning pins, and therefore it can be guaranteed that the upper edge and the lower edge of the cover plate are parallel to the upper edge and the lower edge of the radar; the upper edge and the lower edge of the labeling hole are parallel to the upper edge and the lower edge of the radar, and at the moment, labeling is ensured to be correct through labeling of the labeling hole.

The present invention relates to the technical field of damping walls, and in particular to a porous viscous damping wall. It comprises: an upper connecting plate; an upper box body, the upper box body is fixedly connected to the bottom of the upper connecting plate, a closed cavity is formed in the upper box body, the cavity is filled with a viscous fluid, a first guide shaft is arranged in the transverse direction of the upper box body, the first guide shaft transversely penetrates the accommodating cavity, and the first guide shaft is sealed and connected to the upper box body, a first steel plate is also arranged in the upper box body, the first steel plate is perpendicular to the first guide shaft, the first guide shaft penetrates the first steel plate, the first steel plate is fixedly connected to the first guide shaft, a plurality of first damping holes are arranged on the first steel plate, a plurality of first damping holes are opened along the axial direction of the first guide shaft, and a plurality of first damping holes penetrate the first steel plate; a lower box body, the lower box body is sleeved on the outside of the upper box body, and the two ends of the first guide shaft are respectively fixedly connected to the two side walls of the lower box body. The porous viscous damping wall of the present invention can provide a greater damping force and improve the stability of the damping wall.

The present invention discloses a bidirectional damper, comprising a cylinder, a plug and a guide sleeve are respectively arranged at both ends of the cylinder, a piston rod with one end extending out of the guide sleeve is arranged in the cylinder, a piston is fixedly connected to the piston rod, a floating piston is also arranged between the plug and the piston in the cylinder, a first damping channel is arranged between the outer wall of the piston and the inner wall of the cylinder, a connecting channel connecting the second chamber and the third chamber is arranged in the piston body, a sealing groove connecting the first damping channel and the connecting channel is also arranged on the outer wall of the piston, a sealing ring which is slidably arranged in the sealing groove and is sealed with the inner wall of the cylinder; a positioning sleeve, a spring and a sealing member are arranged in sequence at one end of the piston rod located in the cylinder. The present invention can realize bidirectional damping motion, and can realize self-locking at any position, has a simple structure, and is easy to assemble and manufacture.

This invention discloses a shoulder joint exerciser, including a shoulder brace and an upper arm brace, with a hinged rod assembly between them to maintain deflection. A first rod hinged to the back of the shoulder brace is rotatably connected to the end of a second rod hinged to the back of the upper arm brace. An electric push rod is rotatably mounted on the first rod, with its output end hinged to the second rod and positioned close to the upper arm brace. The device also includes a worm gear, with worm wheels respectively mounted on the shafts connecting the first and second rods to the shoulder brace and upper arm brace, the worm gear meshing with the worm wheels. This shoulder joint exerciser has a simple structure and is easy and quick to operate. It avoids the pain or secondary injury caused by the arm falling rapidly during arm raising and lowering due to muscle weakness or poor coordination.

The invention discloses a vehicle knob control method, a controller, a vehicle, a medium and a program product, and relates to the technical field of vehicles. The knob comprises a knob part and a force feedback motor, the force feedback motor is connected with the knob part, and the force feedback motor is configured to provide rotation damping force opposite to the rotation direction of the knob part; the vehicle knob control method comprises the steps that the real-time state of a knob part is obtained; the real-time state comprises a real-time rotation speed; determining a target output damping force of the force feedback motor according to the real-time rotation speed; wherein the value of the target output damping force is in negative correlation with the real-time rotation speed; and adjusting driving parameters of the force feedback motor according to the target output damping force. According to the invention, differentiated hand feeling feedback in different scenes can be realized, so that different tactile feedback requirements of drivers in different driving scenes can be met.

The utility model relates to a transformer substation. The transformer substation comprises a transformer substation body, a mounting base, a bearing, a first protection assembly and a second protection assembly. The conductive movable rod is connected and matched with the first baffle assembly, the magnetic piece is arranged on the outer side of the conductive movable rod, and the conductive movable rod is electrically connected with the electromagnetic coil. The second baffle assembly is provided with a storage cavity used for storing magnetorheological fluid, and the electromagnetic coil is electrically connected with the conductive movable rod. The second baffle assembly is used for being in abutting fit with the mounting base so as to prevent external water from entering the position where the bearing assembly is located. The first baffle assembly is wound around the outer side of the second baffle assembly, and the first baffle assembly and the second baffle assembly are oppositely arranged. When the first baffle assembly can move in the direction close to or away from the second baffle assembly under the action of external force, the conductive movable rod can be matched with the magnetic part in a telescopic mode. According to the transformer substation, the anti-collision performance can be dynamically adjusted, excessive interference on the transformer substation body is avoided, and the protection performance is greatly optimized.

The invention belongs to the technical field of vibration isolation, and particularly relates to an integrated carbon fiber composite material damping filling sandwich structure raft frame and a preparation method. The raft frame comprises two supporting plates and a support arranged between the two supporting plates. The supporting plate comprises an upper panel and a lower panel; the metal honeycomb interlayer is provided with a plurality of filling holes and is arranged between the upper panel and the lower panel; the surface of the whole supporting plate is made of the carbon fiber composite material, damping of the raft frame is increased, the middle layer is provided with the metal material, the rigidity of the raft frame is increased, and the damping effect of the raft frame is improved. Meanwhile, the filling holes of the metal honeycomb interlayer are filled with the damping material filling blocks, so that the overall weight of the raft frame is reduced, the damping of the raft frame is further increased, and the problems that in the prior art, a metal raft frame is small in damping, and a pure carbon fiber material raft frame is insufficient in rigidity, large in weight and limited in vibration reduction effect are solved.

This application provides a vehicle steering control method, a vehicle, and a storage medium, relating to the field of vehicle control technology. The electronic control unit (ECU) can, based on a target steering angle, begin controlling the rotation of the electric steering transmission structure, which in turn drives the steering tie rod to steer the wheels via a linear damping structure. The ECU receives the actual steering angle of the electric steering transmission structure from a second steering angle sensor. When the actual steering angle of the electric steering transmission structure is less than the target steering angle, and the difference between the actual and target angles is less than a set angle threshold, it indicates that the actual steering angle is about to exceed the target angle, meaning the wheel steering angle is approaching the angle required by the driver's steering wheel. The ECU then controls the linear damping structure to increase the damping force applied to the electric steering transmission structure, thereby limiting the wheel steering angle to the angle required by the driver's steering wheel and preventing over-rotation of the wheels.

The invention discloses an embedded multi-working-channel high-energy-consumption MR-STF damper and a working method, and relates to the field of dampers, the embedded multi-working-channel high-energy-consumption MR-STF damper comprises a main piston rod, a cylinder wall, a main cylinder barrel, an auxiliary cylinder barrel and an auxiliary piston rod; a main cylinder barrel is arranged in the cylinder wall, an auxiliary cylinder barrel is arranged in the main cylinder barrel, the two ends of the main cylinder barrel are positioned and sealed through a left cylinder cover and a right cylinder cover, and the left cylinder cover and the right cylinder cover are detachably connected to the two ends of the cylinder wall. One end of the auxiliary cylinder barrel is arranged on the main piston I, and the other end of the auxiliary cylinder barrel is arranged on the main piston II; the main piston I is installed on the main piston rod, the auxiliary piston is installed on the auxiliary piston rod, and the auxiliary piston is arranged between the main piston I and the main piston II. Through the embedded structure of the main piston rod, the auxiliary piston rod and the auxiliary cylinder barrel, when the main piston rod is pushed, the auxiliary piston achieves the effect of relative movement relative to the auxiliary cylinder barrel, the auxiliary piston and the main piston can work together in a cooperative mode, and the effect of double damping and energy dissipation is achieved.

The application provides a bidirectional speed type magnetic damper, which comprises a shell, a rack movably inserted into the shell, a transmission device and two passive conductor plates, two passive control devices, two conductor plates and a magnet assembly arranged in the shell, wherein the transmission device comprises a first rotating rod, a second rotating rod and a third rotating rod which are pivotally connected to the shell from bottom to top; the passive conductor plates are sleeved to the first rotating rod; the passive control devices are sleeved to the second rotating rod; the conductor plates are sleeved to the third rotating rod; in the working state, with the rack sliding relative to the shell, the conductor plates rotate to cut the magnet assembly and the passive control devices; the passive conductor plates rotate to cut the passive control devices. The embodiment can increase the damping force, delay the appearance period of the peak damping force of the damper, enhance the damping effect of the damper and reduce the cost of the damper relative to the active control technology.

The application provides a suspension type vibration isolation system, belonging to the technical field of transportation vibration isolation, comprising: an outer frame connected with an inner frame through a plurality of vibration isolation mechanisms arranged in a cable-stayed manner; the vibration isolation mechanism comprises: an inertial container, the inside of the inertial container is provided with a series connection of an inertial mass structure and a damper, and the outside of the inertial container is connected in parallel with an elastic device; the suspension type vibration isolation system of the application adopts the parallel combination of the elastic device and the inertial container, the damper is added to the inside of the inertial container, wherein the elastic device is responsible for bearing, the inertial mass structure is responsible for generating inertial force, and the damper is responsible for generating damping force, so that the bearing problem is solved and the damping force is increased. The inertial mass structure is a new type of mechanical element, has the advantages of "high frequency resistance and low frequency", "small mass and large inertia", and the like. Due to the advantages of the inertial mass structure, the inertial mass structure has a wide application prospect in the field of vibration isolation and can well improve the vibration isolation effect of the vibration isolation system on low frequency vibration.

The present invention discloses a magnetorheological damper with an external active dispersion device, comprising a cylinder, a power device, an electromagnetic assembly and a rotor; the power device is located outside the cylinder; the output end of the power device is connected to the closed end of the cylinder, and the output end of the power device is inserted into the closed end of the cylinder; the electromagnetic assembly is located inside the cylinder; the lower end of the electromagnetic assembly is supported on the closed end; the rotor is located inside the cylinder, and the protruding shaft of the rotor is inserted into the closed end of the cylinder and is fixedly connected to the output end of an external motor; the present invention directly drives the rotor to rotate through the power device, and compared with installing a built-in motor at the bottom of the damper, the problem of weakening the gap magnetic field due to filling the gap between the rotor and the stator with magnetorheological fluid is solved. At the same time, the power device is easy to drive and simple to control.

The invention relates to the technical field of dampers, in particular to a linear damper. According to the technical scheme, the linear damper comprises a metal shaft, an end cover, an upper pressure spring, a gasket, a first sealing ring, a shaft seat, a valve seat, a second sealing ring, a base, a lower pressure spring, a shell and a balance sleeve; through the rigid connection arrangement of the shaft seat and the bottom of the metal shaft, the middle can be kept stable, pressure is applied to the end of the metal shaft, the shaft seat is tightly attached to the valve seat, oil can only pass through a hole in the shaft seat and flow into a working area from an oil storage area, and damping force is generated in the period. After pressure applied to the metal shaft is stopped, the lower pressure spring jacks up the base, the base jacks up the shaft base, at the moment, the shaft base is not tightly attached to the valve seat any more, a large amount of oil in a working area flows into an oil storage area through the notch, it is guaranteed that damping force is large, meanwhile, rapid resetting can be achieved, the internal structure is effectively lubricated, and the service life is prolonged. The overall use effect is improved.

The application provides a method and device for protecting a stretch limit position, a vehicle and a storage medium. The method comprises: obtaining a vehicle speed value when it is determined that the vehicle enters a preset stretch limit position protection mode; increasing the current of a shock absorber in the vehicle according to the vehicle speed value; and increasing the damping force generated by the shock absorber according to the increased current, so as to protect the stretch limit position of the shock absorber. The above method obtains the vehicle speed of the shock absorber, and increases the current of the shock absorber at different speeds according to the vehicle speed of the shock absorber, so as to increase the damping force of the shock absorber at different speeds. When facing a larger impact, the problem of abnormal sound of the stretch limit position of the shock absorber can be better avoided by increasing the damping of the shock absorber, and the hard contact of the buffer device in the shock absorber is reduced, so as to reduce the influence on the durability of the shock absorber.

The invention relates to a large thin-wall workpiece turning vibration reduction tool which comprises a fixed vibration reduction mechanism and a fixed vibration reduction mechanism, the fixed vibration reduction mechanism comprises a plurality of vibration reduction rings, the inner sides of the vibration reduction rings are connected with vibration reduction structures, the vibration reduction rings are arranged outside a machined workpiece in a surrounding mode and connected with a lathe faceplate, and the vibration reduction structures provide damping force for workpiece vibration; the movable vibration reduction mechanism comprises a connecting base, a vibration reduction plate and a vibration reduction assembly, the vibration reduction plate can move relative to the connecting base in the first direction, the vibration reduction assembly comprises a displacement amplification structure and a damper, the displacement amplification structure is connected with the vibration reduction plate and the damper, and the displacement of the vibration reduction plate is amplified and input into the damper; the vibration reduction plate is attached to the outer wall or the inner wall of the turning position of the machined workpiece, the first direction is parallel to a first straight line which passes through a cutting point and perpendicularly intersects with the axis of the machined workpiece, and the connecting base is fixed relative to the machined workpiece in the first direction. Vibration in the workpiece machining process can be reduced, machining can be conducted under high machining technological parameters, and high quality and high efficiency of workpiece machining are guaranteed.

The present application belongs to the technical field of vehicle driving stability control, and particularly relates to a vehicle anti-roll and semi-active damper cooperative control method: setting a damping valve opening degree correction coefficient K1 and an anti-roll torque coefficient K2, and cooperatively controlling a left semi-active damper damping valve opening degree Tl, a right semi-active damper damping valve opening degree Tr and an anti-roll driving torque M according to a vehicle anti-roll angle correction amount Δβ; in the vehicle driving process, a damping valve opening degree correction amount ΔT is calculated through the damping valve opening degree correction coefficient K1 and the vehicle anti-roll angle correction amount Δβ, the anti-roll driving torque M is calculated through the anti-roll torque coefficient K2 and the anti-roll angle correction amount Δβ, and the execution of ΔT and M is determined through the anti-roll driving torque M and a damping valve opening degree correction threshold M0; the damping valve opening degrees of the two semi-active dampers are adjusted through the cooperative anti-roll driving torque, so that the control system considers both the smoothness and the response speed of the anti-roll adjustment in the vehicle anti-roll driving process on the off-road surface.

The invention discloses a high-damping viscoelastic power transmission line anti-galloping vibration reduction device and a working method thereof, and relates to the technical field of power transmission line anti-galloping vibration reduction. Comprising a mounting unit which comprises two groups of end plates, and the two groups of end plates are arranged in a mirroring manner; the damping unit comprises an outer cylinder. According to the device, when the power transmission line gallops in the axial direction of the device, the spring and the viscoelastic block in the device can consume galloping energy through extrusion deformation, so that galloping of the power transmission line is reduced, a phase line is controlled to keep a safety gap, the safety of the power transmission line is improved, and when the spring participates in work and the vibration amplitude is increased in the shell, the viscoelastic block participates in work. And the spring can also play a role in resetting. When the vibration amplitude is very large, the viscoelastic blocks deform due to large-amplitude extrusion and then make contact with the inner wall of the outer cylinder to be restrained, larger damping force and compression counterforce are provided, and therefore the overall stability of the device is guaranteed, and the wires are prevented from further waving.

The application discloses a hinge mechanism and an electronic device, and belongs to the technical field of communication. The hinge mechanism comprises at least two hinge assemblies distributed along the direction of a rotation axis, each hinge assembly comprising a base, a first synchronous swing arm, a second synchronous swing arm, a first sliding piece, a fixed fitting piece and an elastic piece, the first synchronous swing arm and the second synchronous swing arm are rotationally connected with the base, the first synchronous swing arm, the fixed fitting piece and the second synchronous swing arm are sequentially arranged along the direction of the rotation axis, the first synchronous swing arm is matched with the first sliding piece, the first sliding piece abuts against the first end of the elastic piece, the fixed fitting piece is connected with the base, and the fixed fitting piece is matched with the first synchronous swing arm through plane matching, the second synchronous swing arm is provided with a first driving curved surface, the fixed fitting piece is provided with a second driving curved surface, and the first driving curved surface is matched with the second driving curved surface. The electronic device comprises a first device main body, a second device main body and the hinge mechanism.

This invention discloses a magnetorheological fluid torsional vibration damping device and method for rotary guidance, belonging to the field of drilling engineering technology. It includes a shell and a central shaft, with a damping cavity formed between the inner wall of the shell and the outer wall of the central shaft. The damping cavity is filled with magnetorheological fluid. An inertial damping unit is arranged within the damping cavity, comprising a gear bearing and an electromagnetic damping mechanism. The electromagnetic damping mechanism includes an electromagnetic coil, a magnetically conductive outer ring, and a magnetically conductive inner ring. An annular groove is provided on the outer wall of the shell opposite the gear bearing, into which the electromagnetic coil is embedded, and the magnetically conductive outer ring is fixed. The magnetically conductive inner ring is embedded on the inner wall of the central shaft opposite the gear bearing. An axis acceleration sensor and a gyroscope are mounted on the central shaft. This invention obtains the vibration intensity and viscosity-slip vibration index at the current sampling moment, changes the current in the electromagnetic coil in real time, and then adjusts the damping force of the inertial damping unit by adjusting the viscosity of the magnetorheological fluid.