54results about How to "Adjustable damping force" patented technology

A shock absorber assembly including a fluid for absorbing forces between the body and the wheel of a motor vehicle. The shock absorber includes a valve having a resilient disc engaging a piston for impeding the passage of fluid through the aperture of the piston. A bi-stable solenoid is disposed in the housing and is interconnected with the resilient disc of the valve. The bi-stable solenoid's armature is moveable between a first stable position for applying a first biasing force against the resilient disc of the valve and a second stable position for applying a second biasing force being less than the first biasing force against the resilient disc of the valve. The adjustment of the biasing force on the valve also adjusts the damping force of the shock absorber.

A two-wheeled motor vehicle has a rear cushion unit that includes a damper cylinder having one end part linked to a swing arm, a sub-tank connected to the damper cylinder and an adjustment mechanism for adjusting a damping force in response to operation of the operation element is provided between a vehicle body frame and the swing arm. A cylinder body of the damper cylinder, a bottomed housing tube part housing the adjustment mechanism having on an upper end part an operation face on which the operation element is disposed, and the sub-tank are integrally and connectedly provided. The operation face is inclined obliquely upward so that the operation element that faces a region bounded by the seat frame, the pillion step holder mounted on the seat frame and the swing arm when viewed from the side can be operated from obliquely above on the outside.

Disclosed is an energy-regenerating damper that ensures a compression stroke and has a simplified structure. A piston (16) is provided with: a housing (31) fitted inside a cylinder (12) so as to be able to slide against the inner surface of the cylinder; a stator (32) contained in / fixed to the inside of the housing (31); a rotor (33) supported so as to be able to rotate inside the stator (32); and damping valves (34, 35) provided at the top and bottom ends of the housing (31). The housing (31) comprises an upper half (31a) and a lower half (31b) fastened together by bolts (36), and a damper rod (13) is fixed to the top end of the upper half (31a). The upper half (31a) and the lower half (31b) each contain a bearing (39) for supporting the rotor (33). A plurality of orifices (37a, 37b) through which a hydraulic oil circulates are drilled towards the outsides of the upper half and lower half, and circulation holes (38a, 38b) through which the hydraulic oil circulates are drilled towards the insides of the upper half and lower half.

The invention discloses a magneto-rheological damper of an inbuilt displacement sensor, which is composed of a working cylinder, a piston of which the core is provided with big and small pores, a piston rod, an inbuilt pipe and a displacement sensor, wherein the working cylinder is filled with magneto-rheological fluid; when the piston rod pushes the piston to move in the working cylinder, the inbuilt pipe enters or retracts from the big pore of the piston while the piston rod enters or retracts from the working cylinder; because the external diameter of the piston rod is same with that of the inbuilt pipe, the volume of the working cylinder is constant; the movement of the piston drives a sliding axle of the displacement sensor arranged in the inbuilt pipe to move, so that the displacement sensor arranged in the inbuilt pipe can output the signal of piston real-time displacement amount.

In a hydraulic shock absorber 10, a piston holder 41 has an axial side surface 41e formed with an opening of an inclined hole 48b exposed to a rod-side oil chamber 43B. A block ring 71 capable of closing the opening of the inclined hole 48b is provided around a piston rod body 22 at a position between the axial side surface 41e of the piston holder 41 and the upper end of a rebound spring 32.

The invention discloses an intelligent hydraulic frictional damping device, which comprises a hydraulic frictional damper and an integrated programmable logic controller (PLC) cabinet, wherein the hydraulic frictional damper comprises supports, a hydraulic cylinder body, a piston rod, a rubber block, a friction plate and a sensor; the hydraulic cylinder body is connected with the supports; the supports are arranged on a vibrating sieve support under a vibrating sieve supporting spring; the piston rod is arranged in the hydraulic cylinder body and can slide in the cylinder body; the rubber block is fixed at the front end of the piston rod; the friction plate is fixed on the outer side of a side plate of an industrial vibrating sieve; the sensor is arranged on the vibrating sieve support, and is connected with the integrated PLC cabinet via a data line; and the hydraulic cylinder body is connected with the integrated PLC cabinet through an oil tube via connectors. The intelligent hydraulic frictional damping device has the characteristics of high reliability, high safety, high intelligent degree, adjustable damping force, high practicality and the like, and can produce great economic benefit and social effects.

The invention provides a novel high-precision hybrid vibration isolation device. The novel high-precision hybrid vibration isolation device comprises an assembly plate, an intermediate separation plate, a bottom plate, an air spring and magnetorheological dampers, wherein the assembly plate and the intermediate separation plate are connected through the magnetorheological dampers; the intermediate separation plate is fixedly connected with the air spring through bolts; and the bottom plate is fixedly connected with the air spring. The magnetorheological dampers are used for isolating low-frequency vibration signals coming from the ground; and since practical ground signal sources can be transferred along multi-dimensional directions, the four magnetorheological dampers have vibration isolation capability of six DOF (Degree of Freedom) directions. The air spring and the magnetorheological dampers are reasonably connected with the intermediate separation plate, so that high-precision active and passive hybrid vibration isolation capability can be realized. According to the novel high-precision hybrid vibration isolation device disclosed by the invention, a stackable structure is adopted, so that the structure is compact; the vibration isolation capability of multi-DOF can be realized, so that the novel high-precision hybrid vibration isolation device has the advantages of high practicability, high reliability and the like; and an advanced vibration isolation means is provided for a high-precision equipment platform.

The invention discloses a rotary magneto-rheological damper and belongs to electronic devices. The rotary magneto-rheological damper comprises a cylinder barrel, an upper end cover, a lower end cover, a stator, a rotor blade, a magnetic circuit and a rocker arm. The portion, outside the upper end cover, of the rocker arm is connected with the stator. The upper end cover, the lower end cover, the stator and the cylinder barrel are sealed. Wire holes and exhaust holes are formed in the upper end cover. The rotor blade can rotate around the stator and is in motive sealing with the upper end cover and the lower end cover to divide a cylinder body into two sealed spaces. The magnetic circuit is arranged in the two sealed spaces. The magnetic circuit is in motive sealing with the root of the rotor blade and the cylinder barrel and is in fixed sealing with the upper end cover and the lower end cover. The rotary magneto-rheological damper can provide large damping force, the damping force can be adjusted in real time, and the weight is lower relatively.

The invention discloses a rotary damper capable of adjusting torque force. A sealing cavity full of damping oil is defined by the surface of a containing section of a piston shaft and the inner wall of an outer shell, the upper portion of the containing section is provided with an oil leakage hole distributed in the radial direction, an oil channel is formed in the center of the top of the lower end of the containing section, and the oil channel is communicated with the center of the axis of the oil leakage hole; the containing section is provided with a radial through hole, an adjusting bolt is arranged in the through hole, a screw hole is axially formed in the top of the upper end of an exposed section, and an adjusting screw capable of adjusting oil leakage amount of the oil leakage hole is arranged in the screw hole; the containing section is sleeved with a piston sleeve capable of moving along the containing section vertically; when the two ends of the adjusting bolt move downward from the upper end to the lower end of an adjusting groove, no resistance is generated, and when the two ends of the adjusting bolt move upward from the lower end of the adjusting groove to the upper end of the adjusting groove, resistance is generated. According to the rotary damper, torque force can be adjusted and labor is saved in reset.

The invention discloses a combined type multi-dimensional vibration reduction device with a damping amplification function. The combined type multi-dimensional vibration reduction device comprises an outer barrel, wherein a horizontal vibration reduction and energy dissipation system and a vertical vibration reduction and energy dissipation system are arranged in the barrel; the horizontal vibration reduction and energy dissipation system comprises a central mass body, a piston type damper and a vibration absorption layer; and the vertical vibration reduction and energy dissipation system comprises a central mass body, an electromagnetic rotating energy dissipation mechanism and a friction resistance layer. Multi-dimensional vibration reduction control of the structure is achieved, and the vibration reduction and energy dissipation effects of the vibration reduction device are enhanced; damping adjustability and energy dissipation capacity adjustability in the vibration process are achieved by introducing the piston type damper full of magnetorheological fluid and an electromagnetic rotary energy dissipation device; and part of vibration energy is converted into electric energy through piezoelectric ceramics, the electric energy is directly supplied to an electrified coil, the damping force and the energy dissipation capacity of the vibration reduction device are adjusted in real time through structural vibration in an energy conversion mode, and full-automatic adjustment and energy self-sufficiency of the vibration reduction device are achieved.

Disclosed are a viscoelastic rotary damping support and a working method thereof. The damping support comprises a double-sided toothed rack, and two toothed surfaces of the rack are symmetrically provided with at least two rotary damping units in meshed transmission with the toothed surfaces of the rack; each rotary damping unit comprises an outer gear, a shaft sleeve and a fixing shaft rod whichare axially sleeved, and each outer gear is used for being meshed with the rack; an outer ring of each shaft sleeve is in key connection with an inner ring of the corresponding outer gear, the inner annular surface of each shaft sleeve and the outer annular surface of the corresponding fixing shaft rod have the same circle center, an annular cavity for placing a viscoelastic damping material is formed between the inner annular surface of each shaft sleeve and the outer annular surface of the corresponding fixing shaft rod, and the two ends of each fixing shaft rod are fixedly connected with arigid bracket. The damping support can change horizontal relative motion into shearing motion of the viscoelastic damping material in the rotational direction, the weak boundary of bonding of a viscoelastic damping material and other components of a traditional plate-type damping device is eliminated, and therefore the damping support has larger working stroke and larger damping force.

Disclosed is a stepper, which includes a base frame, two pedal frames bilaterally pivotally supported on the base frame, a friction wheel supported on the middle of the rear side of the base frame, two links bilaterally coupled between the pedal frames and the friction wheel for enabling the friction wheel to be alternatively turned forwards and backwards when the pedal frames are alternatively moved up and down by the user, and an adjustment rod rotatably mounted in the base frame to impart a friction resistance to the friction wheel.

A tripod head, in particular to hold a film or television camera, includes a first body and a second body, wherein the first body can be pivoted about at least one pivot axis relative to the second body, and a damping device to damp the pivoting movement of the first body relative to the second body, with a first damping element fixed to the first body and a second damping element, wherein the damping elements each have a plurality of concentrically arranged annular ribs which engage in cavities formed between the ribs of the respective other damping element and a damping medium is provided between the ribs of the damping element, wherein the second damping element is formed of at least two separate parts which are fixable independently of each other to the second body. The tripod head can be produced by a small amount of material and is easy to install. The tripod head only needs a small installation space and is adjustable in damping force.

The invention provides a leg exoskeleton device and a control method thereof. The leg exoskeleton device comprises a thigh assembly and a shank assembly which are rotationally connected and worn on the thigh and the shank of a user respectively, a magnetorheological damper and a controller, wherein the magnetorheological damper comprises a damping cylinder and a damping rod, wherein part of the damping rod is arranged in the damping cylinder. One of the thigh assembly and the shank assembly is rotationally connected with the end, exposed out of the damping cylinder, of the damping rod, and theother is rotationally connected with the damping cylinder. An annular magnetizer is arranged in the damping cylinder and arranged on the outer ring of the damping rod in a sleeving mode, an annular groove is formed in the outer side wall of the annular magnetizer, a conductive coil is wound in the annular groove, and a magnetorheological fluid is contained in the damping cylinder; the annular magnetizer and the damping cylinder are arranged at an interval; and the controller is in communication connection with the magnetorheological damper and is used for controlling the current intensity ofthe conductive coil so as to control the working state of the magnetorheological damper. The device not only can realize locking, loosening or deceleration between the thigh assembly and the shank assembly, but also is relatively low in energy consumption, and meanwhile, the intelligent degree is ensured.

The invention relates to a high-frequency-response damping-adjustable semi-active shock absorber which comprises an oil storage cylinder, a working cylinder, a piston rod and a bypass oil way. A conduction one-way valve is arranged between the working cylinder and the oil storage cylinder, and the two ends of the conduction one-way valve communicate with the lower end of the working cylinder and the interior of the oil storage cylinder correspondingly. A piston body is provided with a through hole and a piston one-way valve which enable an upper cavity and a lower cavity to communicate with each other, the bypass oil way comprises a first branch oil way, a second branch oil way and a third branch oil way which are arranged in parallel, the first branch oil way is connected with a first switch valve and a first pilot valve in series, the second branch oil way is provided with a second switch valve, and a first overflow valve is arranged on the third branch oil way. The high-frequency-response damping-adjustable semi-active shock absorber aims to solve or at least relieve the problem that a traditional passive oil pressure shock absorber cannot be adjusted in real time according to vehicle loads and line conditions.

Disclosed is a damper for continuously variably adjusting a damping force that includes: a cylinder; a piston rod that is inserted into the cylinder and moves back and forth; a piston valve that is coupled to a bottom portion of the piston rod and moves back and forth in the cylinder according to the movement of the piston rod; a MR fluid that fills the cylinder and moves between a tension space over the piston valve and a compression space below the piston valve; and a volume compensation means that is located in the cylinder and compensates for a volume change of an inner space of the cylinder due to the movement of the piston rod, the volume compensation means including: a floating plunger that is configured to be below the piston valve and capable of moving up and down; a coil spring that is coupled to a bottom surface of the floating plunger and supports the floating plunger; and a support cup that is fixed onto the cylinder, coupled to a bottom portion of the coil spring to support the coil spring, and forms a buffer space, along with the floating plunger, between the support cup and the floating plunger.

The invention discloses a vibration energy recycling type magnetorheological damper, and belongs to the technical field of automobile energy saving. According to the vibration energy recycling type magnetorheological damper, vibration energy of a suspension can be converted into electric energy, the vibration energy is recycled, and the vehicle energy use ratio is increased. The vibration energy recycling type magnetorheological damper comprises a magnetorheological damper module, a piezoelectric stack module, and an electromagnetic induction power generation module. The magnetorheological damper module comprises an upper installation lifting ring, a piston rod, a piston ring, magnetorheological fluid, a primary damping spring, an excitation coil and a base; a cylinder cavity is filled with the magnetorheological fluid, the excitation coil is installed in a piston ring groove, and connected with an external power source; the piezoelectric stack power generation module is composed of apiezoelectric stack and a force transmission spring; and the electromagnetic induction power generation module comprises a permanent magnet and an induction coil. The piston rod is connected with thepermanent magnet and moves to cut the magnetic field line to convert the vibration energy into the electric energy, and the induction coil is connected with a rectifying circuit for recycling. According to the vibration energy recycling type magnetorheological damper, the vibration energy is converted into the electric energy while active vibration isolation is realized, the vibration energy is recycled, and energy conservation and environment protection are achieved.

The invention discloses an integrated type electromagnetic shock absorber. The integrated type electromagnetic shock absorber comprises a hydraulic buffer, an electromagnetic actuator, an upper threaded rod and a lower threaded rod, wherein the electromagnetic actuator comprises an actuator stator, an actuator promoter, an actuator promoter limiting plate, at least two actuator stator supporting rods and an actuator stator fixing seat; a stator central through hole is formed in the actuator stator; the actuator promoter penetrates through the stator central through hole; the upper end of the actuator stator is connected with the lower ends of the actuator stator supporting rods; and the actuator stator fixing seat is arranged at the upper ends of the actuator stator supporting rods, a plurality of grooves are formed in the inner surface of the actuator stator, coil windings are arranged in the grooves, permanent magnets are arranged on the outer surface of the actuator promoter, and the hydraulic buffer is arranged in a promoter central through hole. The electromagnetic actuator, the hydraulic buffer and a spring are integrated into a whole, and are designed to be slender, so thatthe reliability and the compactness of the electromagnetic actuator, the hydraulic buffer and the spring in an automobile suspension assembly are improved.

The invention relates to air suspension and a vehicle using the same. The vehicle comprises a body, a vehicle bridge and the air suspension arranged between the body and the vehicle bridge, the air suspension comprises an air spring and an air damper, and the air damper comprises a work cylinder body. An air opening communicating with an inner cavity of the work cylinder body is formed in the airdamper and communicates with an air storing cylinder through a damper air channel, and a damper throttling switch is arranged on the damper air channel. By adjusting the damper throttling switch, theair pressure in the work cylinder body of the air damper can be adjusted, damping force provided by the air damper can be adjusted accordingly, the damping force adjusting range of the air damper canbe enlarged, and application and popularization of the air suspension are facilitated.

The invention discloses a multistage pressure-limiting adjusting hydraulic buffer comprising a plurality of buffer mechanisms connected in order from left to right. Each buffer mechanism comprises a cylinder block, a pressure-limiting adjusting overflow valve and a piston; the pressure-limiting adjusting overflow valve is fixed to the left of the cylinder block in a threaded manner. In every two adjacent buffer mechanisms, the left end of the cylinder block of the right one is hermetically connected to the right end of the cylinder block of the left one in a sleeving manner, the cylinder block of the right one can move relative to the cylinder block of the left one so as to serve as a piston for the left one; the pressure-limiting adjusting overflow valve of the leftmost one of the buffer mechanisms is connected with an oil tank through an oil pipe; the right end of the cylinder block of the rightmost one is connected with a bearing plate in a threaded manner. The multistage buffering and the pressure-limiting adjusting overflow valves are combined to form a constant-damping-force long-stroke buffer; buffering stroke and collision time are prolonged; power consumption for buffering is maximally reduced at the premise that maximum acceleration is lower than a designed value.

The invention discloses an adjustment assembly for shock absorbing damping. The adjustment assembly for the shock absorbing damping comprises an adjusting screw and an adjusting cavity, wherein the adjusting cavity is communicated with a damping cavity through an adjusting channel; the adjusting screw drives a conical valve core to adjust the circulation area of the adjustment channel. By adopting a structure capable of adjusting damping force externally, the key performance parameter, namely the damping force, can be adjusted according to the requirements of using environment, such as different road conditions, when the adjustment assembly for the shock absorbing damping is used; the adjustment assembly for the shock absorbing damping has a dynamic application effect, so that the comfort degree and the reliability of the overall vehicle are improved effectively; the adaptability of the overall vehicle to different road conditions is improved; the driving habits of different occupants are met.

The invention provides a furniture damper. The furniture damper comprises a base, a locking device, a pulling hook and an elastic element. The base comprises a first sliding groove, and a locking rack is arranged on one side of the first sliding groove. The locking device is installed in the first sliding groove and matched with the locking rack. The pulling hook is movably arranged on the base. One end of the elastic element is fixedly connected to the pulling hook, and the other end of the elastic element is fixedly connected to the locking device. When applied to furniture, the furniture damper can provide different amplitudes of damping force to meet the requirements of different users for damping, and the problem of serious collision or difficult opening is prevented. The furniture damper has the characteristics of being simple in structure and low in cost.

The invention discloses a cylindrical electronic permanent-magnet spring with dual effects. The upper end of an upper movement shaft penetrates out of a shell, the lower end of the upper movement shaft penetrates through a mechanical part, the end of the lower end of the upper movement shaft is located in a permanent-magnet part, the end, penetrating out of the upper end of the shell, of the lower end of lower movement shaft is located in the permanent-magnet part, and an armature is located in the mechanical part and fixed to the upper movement shaft; the outer side of the upper portion ofthe armature is connected with the inner wall of the upper portion of the mechanical part through upper mechanical spring bodies, and the outer side of the lower portion of the armature is connectedwith the inner wall of the lower portion of the mechanical part through lower mechanical spring bodies. An upper electromagnet is arranged at the upper portion of the mechanical part, a lower electromagnet is arranged at the lower portion of the mechanical part, the upper movement shaft penetrates through the middles of the upper electromagnet and the lower electromagnet, the inner wall of the permanent-magnet part is provided with conductors, an upper permanent magnet and a lower permanent magnet are arranged in the permanent-magnet part, the permanent magnet is arranged at the end of the upper end of the lower movement shaft, and the upper permanent magnet is arranged at the end of the lower end of the upper movement shaft. Through the relative movement of the permanent magnets and theconductors at the periphery, an induced magnetic field and repulsive force are generated, the cylindrical electronic permanent-magnet spring achieves corresponding functions, and therefore, the cylindrical electronic permanent-magnet spring has a wide application range and an excellent market prospect.

The invention discloses an adjustable damper, which comprises a damping spring and a damper assembly, wherein the damper assembly comprises a damping cylinder and a piston assembly, the damping assembly is provided with a damping force adjusting device, the damping force adjusting device is used for adjusting the damping force by adjusting the size of a damping cavity of the damper assembly, and the damping force adjusting device is provided with a damping force adjusting end which is exposed out of the damper. The adjustable damper has the advantages that by adopting the structure through which the damping force can be adjusted at the exterior, the critical property parameter, namely the damping force, can be adjusted according to the requirements of use environments, such as different road conditions in the use process, so the dynamic application effect is realized, the comfortability and reliability of whole vehicle are effectively improved, the suitability of the whole vehicle to different road conditions is improved, and the driving habits of different drivers are met.