952results about "Liquid based dampers" patented technology

The invention belongs to the technical field of automobile shock absorbers, and particularly relates to a shock absorber assembly structure for an active hydraulic suspension. Liquid in the rod cavity and the energy accumulator can be pumped into the rodless cavity by regulating and controlling the two-way pump to achieve active jacking of the hydraulic shock absorber, liquid in the rodless cavity is pumped into the energy accumulator and the rod cavity to enable the shock absorber to be actively compressed, and then the lifting end of the shock absorber drives a vehicle body to synchronously move to achieve active adjustment of the height of the vehicle body. In addition, a first channel, a second channel, a third channel, a fourth channel, a first electromagnetic one-way damping valve, a second one-way damping valve, a third electromagnetic one-way damping valve and a fourth one-way damping valve are arranged on the base, and the first electromagnetic one-way damping valve, the second one-way damping valve, the third electromagnetic one-way damping valve and the fourth one-way damping valve are used for controlling the oil flow direction and damping force. An oil flow channel and a flow direction of a traditional shock absorber are changed, a plurality of valve bodies are integrally assembled, and assembly of the valve bodies and the shock absorber is facilitated.

The invention belongs to the technical field of shock absorption, and discloses a shock absorber. According to the shock absorber, the temperature change of a shock absorber medium is monitored in real time through the detection piece, and the distance between the one-way valve element and the fastening plug is automatically adjusted through the driving assembly, so that the damping force of the shock absorber can be adaptively adjusted along with the temperature change of the medium. When the viscosity is reduced due to the rising of the medium temperature, the gap between the one-way valve element and the fastening plug is automatically reduced, and the damping force is increased to maintain the vibration reduction performance; when the viscosity is increased due to reduction of the medium temperature, the gap between the one-way valve element and the fastening plug is automatically enlarged, and the situation that damping force is too large, and vibration reduction comfort is affected is avoided. According to the automatic adjusting mechanism, the problem of damping force fluctuation caused by temperature change of a traditional shock absorber is effectively solved, and the stable shock absorption effect of a vehicle can be kept at different environment temperatures.

The invention relates to the technical field of shock absorbers, and particularly discloses a novel frequency sensitive shock absorber piston valve which comprises a connecting rod arranged on the inner side of a shock absorber shell, a first flow guide hole and a second flow guide hole are formed in the lower end of the connecting rod, and the first flow guide hole and the second flow guide hole communicate with an oil channel formed in the inner side of the connecting rod, so that a bypass channel is formed; the piston valve is arranged between the first flow guide hole and the second flow guide hole, the frequency sensitive valve sleeves the outer side of the connecting rod, one side of the piston valve is in lap joint with one side of the frequency sensitive valve, and the frequency sensitive valve is communicated with the second flow guide hole. On the basis of a traditional shock absorber valve assembly, a set of frequency sensitive valve system is additionally arranged, the frequency sensitive valve system can conduct mechanical automatic adjustment on the damping force of the shock absorber along with changes of the vibration frequency or stroke of a whole vehicle at the low-frequency stage and the high-frequency stage, and therefore the requirement for actual use of the whole vehicle is met; the driving comfort and controllability are improved, and the reliability is better.

The utility model belongs to the technical field of shock absorbers, and particularly relates to a hydraulic damping adjusting device of a shock absorber, the shock absorber comprises a hydraulic cylinder and a piston rod sleeved with a piston valve body, the piston valve body divides an inner cavity of the hydraulic cylinder into an upper oil cavity and a lower oil cavity, the piston rod is provided with a throttling channel, and a throttling rod axially slides on the piston rod. A pre-tightening spring is arranged between the throttling rod and the throttling channel, the hydraulic damping adjusting device comprises a hydraulic adjusting end cover, an adjusting cavity is formed in the hydraulic adjusting end cover, and the adjusting cavity and the throttling rod are matched with a hydraulic push rod on the hydraulic adjusting end cover through a plunger to be in transmission connection. According to the utility model, the throttle lever is driven to axially move in a hydraulic mode so as to adjust the flow area of the throttle channel and realize the damping force adjustment of oil flowing, so that the problems of time and labor waste and low adjustment efficiency caused by mechanical transmission matched adjustment are avoided, and meanwhile, the problem of leakage of damping oil in the prior art is effectively solved.

The invention relates to the technical field of shock absorption, in particular to an active shock absorber and an installation method. The active damper comprises a damping assembly and a driving unit. The damping assembly comprises an outer cylinder unit and a piston unit; the outer cylinder unit comprises an outer cylinder body, a first opening and a second opening; part of the piston unit is movably arranged in the outer cylinder and divides the outer cylinder into an upper cavity and a lower cavity. The first opening is communicated with the upper cavity; the second opening is communicated with the lower cavity. The driving assembly comprises a driving unit and a first supporting unit; the driving unit inlet / outlet is communicated with the first port and the second port; the first supporting unit comprises a first connecting module, a second connecting module and a third connecting module; the first connecting module and the third connecting module are respectively connected with the driving unit; the second connecting module is arranged between the first opening edge and the second opening edge; the second connecting module is connected with the outer cylinder body; and the second connecting module is connected with the side walls in the first port and the second port. Therefore, the problem that when the driving structure is connected to the outer side of the cylinder body, fixation is not firm enough is solved.

A modular hydraulically-adjustable preload and / or cross-over system. The system includes a housing configured to couple with a main damper cylinder, the housing including a slave cylinder within a portion of a slave cylinder chamber, the slave cylinder telescopically movable with respect to the housing; a fluid chamber; and a fluid port configured to provide a fluid flow for the fluid chamber, wherein an increase in a fluid volume within the fluid chamber causes a portion of the slave cylinder to telescopically extend from the slave cylinder chamber. A preload flange coupled with the slave cylinder at an end of the housing such that a change in a location of the slave cylinder causes a change in a location of the preload flange.

The invention discloses an oil way structure of a hydraulic damping cylinder, the hydraulic damping cylinder, a limb and a robot, and the oil way structure of the hydraulic damping cylinder comprises a body which is provided with a first group of one-way valve mounting positions, a second group of one-way valve mounting positions, a damper mounting position and a hydraulic cylinder mounting position; a first one-way valve and a second one-way valve are mounted at the first one-way valve mounting A third one-way valve and a fourth one-way valve are mounted at the second one-way valve mounting A first channel, a second channel, a third channel, a fourth channel and an intersection channel are formed in the body. Relative to the intersection channel, the first one-way valve, the second one-way valve, the third one-way valve and the fourth one-way valve have the same flowing direction. And the oil path structure forms a channel for hydraulic oil to circulate, so that the hydraulic oil circulates in each component of the hydraulic damping cylinder. According to the oil way structure of the hydraulic damping cylinder, hydraulic oil channels are concentrated, the number of the hydraulic oil circulation channels in other parts of the hydraulic damping cylinder is reduced, and the overall machining difficulty and cost of the hydraulic damping cylinder are reduced.

A damper link (14) for a sway bar system (100), the damper link for coupling a first end of a sway bar to a first location on a vehicle (152), which damper link comprises: a body (202) comprising a damping chamber (209) and a reservoir (222); a through shaft (204) coupled to a piston (208), wherein said piston divides said damping chamber into a first chamber (210) and a second chamber (216); a high-pressure line (218) fluidly coupled with said damping chamber (209) and said reservoir (222), to allow fluid to flow from said first chamber (210) and said second chamber (216) to said reservoir (222); and a low-pressure line (220) fluidly coupled with said damping chamber (209) and said reservoir (222), to allow fluid to flow from said reservoir to said first chamber (210) and said second chamber (216), wherein in use said high-pressure line (218) and said low-pressure line (220) assist in self-centering said sway bar.

The application discloses a damping-adjustable hydraulic bushing and a control method thereof. The damping-adjustable hydraulic bushing is composed of a hydraulic bushing body and a solenoid valve. The hydraulic bushing body comprises a bushing support, a main spring rubber, a cast aluminum inner tube, an aluminum outer tube and a cage-shaped framework. The cast aluminum inner tube, the main spring rubber and the aluminum outer tube are coaxially arranged from inside to outside. The cage-shaped framework is arranged in the main spring rubber and used for supporting the main spring rubber. Two flow channel plates are assembled between the aluminum outer tube and the main spring rubber, so that a brake liquid chamber and an acceleration liquid chamber are formed between the main spring rubber and the flow channel plates respectively. A brake flow channel on the brake side flow channel plate cooperates with an acceleration flow channel on the acceleration side flow channel plate to form a passage. A connecting bridge is arranged on the cage-shaped framework. The solenoid valve is connected to the connecting bridge through bolts. An axial actuating hole is arranged on the cage-shaped framework. An actuating rod is arranged in the axial actuating hole and controlled by the solenoid valve.

The invention discloses an anti-impact single-rod shear thickening damper, and relates to the field of dampers. The piston is connected in the cylinder barrel in a sliding manner and is provided with a plurality of damping holes; one end of the piston rod is connected with the piston, and the other end of the piston rod penetrates through the cylinder barrel and extends out of the cylinder barrel; the baffle disc is rotationally connected to the piston and used for opening and closing the damping holes, and communicating holes which are used for communicating the damping holes and have the same number as the damping holes are formed in the baffle disc. According to the damper, the baffle disc is rotated by an operator to shield or open the damping hole, so that the flowing sectional area of damping liquid is changed, the damping force of the damping liquid is changed, and the damping requirements of the damper under different load conditions are met.

The invention relates to the technical field of shock absorbers, in particular to a hydraulic pilot-operated type adjustable pre-tightening shock absorber. The hydraulic pilot-operated type adjustable pre-tightening shock absorber comprises a piston assembly used for providing shock absorption damping and a hydraulic driving assembly, a spring piece is arranged outside the piston assembly, one end of the spring piece is fixed to the piston assembly, the spring piece is used for providing damping force for the piston assembly, and the other end of the spring piece is connected with the hydraulic driving assembly. The hydraulic driving assembly provides axial adjusting force so that the pre-tightening force of the spring piece on the piston assembly can be changed. The hydraulic driving assembly comprises a valve sleeve provided with a pressure control part and an output rotor, the output rotor is installed in the valve sleeve, a gap exists between the output rotor and the upper portion of the valve sleeve, and the output rotor is in sliding fit with the valve sleeve and can rotate and axially move relative to the valve sleeve. The invention provides a shock absorber which is compact in structure, quick in response, easy to realize in engineering and capable of effectively improving the adaptability of a vehicle.

A ring circumscribing a moveable rod of a hydraulic damper. The movable rod defining an axis. The ring comprising a first wall, a second wall, an inner wall, an outer wall and a fluid passage. The fluid passage comprising a first channel extending radially along the second wall from the inner wall, with respect to the axis The fluid passage further comprising a second channel.

A motor vehicle having an active damping control, which includes at least one vibration damper having a damper piston, which can be moved back and forth in a main pipe with hydraulic medium in an axial direction relative to the main pipe. The main pipe is arranged in a container pipe. An intermediate pipe is arranged between the main pipe and the container pipe. The main pipe, the intermediate pipe and the container pipe are arranged coaxially in a three-pipe damper. The damper piston is attached to an end of a piston rod.

The invention relates to the technical field of shock absorption, and discloses a frequency self-adaptive shock absorber which comprises a cylinder body, a piston assembly and a frequency response structure. The piston assembly comprises a piston body and a piston rod. The frequency response structure is integrated in the piston rod and comprises a communicating channel, a mounting hole, an adjusting rod, an elastic piece and a plunger sleeve, the plunger sleeve is arranged in the communicating channel, a conical convex part is arranged at one end of the adjusting rod, an overflowing gap is formed between the peripheral face of the conical convex part and a port of the plunger sleeve, and the elastic piece is connected with the end, deviating from the plunger sleeve, of the adjusting rod. The frequency response structure is integrated in the piston rod, the elastic piece made of the nonlinear elastic material is used for sensing the oil pressure frequency change, the adjusting rod is driven to move in combination with the oil pressure, the damping force can be reduced at high frequency and increased at low frequency, and self-adaptive adjustment of the damping force of the shock absorber under high and low frequency vibration road conditions is achieved. According to the design, a complex frequency control valve does not need to be additionally arranged, and the cost, the structural complexity and the overall size of the damper can be remarkably reduced.

To enable elimination of a time lag until the start of rotation of a rotor in one direction from the start of rotation of a shaft in one direction, after the completion of the rotation of the shaft of a clutch in the reverse direction.SOLUTION: A rotary damper for generating a braking force during the rotation of a rotor (20) comprises a clutch (30) that has an internal gear (31) rotating in synchronization with the rotor, a tooth (32) meshing with the internal gear; a block (33) formed with the tooth, a recess (34) for holding the block in a circumferential direction, a flange (35) formed with the recess, a shaft (36) formed with the flange, and a spring (37) for supporting the block in a radial direction.SELECTED DRAWING: Figure 5

The shock absorber with the negative stiffness characteristic comprises a cylinder barrel, a piston rod, a piston and a bottom valve, a stretching valve and a one-way valve are arranged on the piston, a compression valve and a one-way valve are arranged on the bottom valve, a valve element of the compression valve is connected to a valve element of the stretching valve through a spring, and a limiting device of the valve element of the stretching valve is arranged on the piston or the piston rod. Damping force values of the compression valve and the stretching valve are both controlled by the stroke of the piston and the acting force of the spring. In the stretching process of the shock absorber, when the spring is in a pressed state, the stretching valve forms damping force, and the shock absorption effect is achieved. The larger the compression stroke (compression force value) of the spring is, the larger the tensile damping value of the shock absorber is. In the compression process of the shock absorber, when the spring is in a pulled state, the compression valve forms damping force, and the shock absorption effect is achieved. The larger the stretching stroke (stretching force value) of the spring is, the larger the compression damping value of the shock absorber is.

A fluid damper having a damper housing with a first and a second fluid volume, and a damping piston located within the damper and separating the first and second fluid volume. The damper piston has a piston fluid pathway formed therethrough and between the first and second fluid volume. The fluid damper includes a fluid accumulator having an accumulator fluid volume. The fluid damper has a first fluid pathway extending between the first fluid volume and the accumulator fluid volume, and the fluid damper has a second fluid pathway extending between the second fluid volume and the accumulator fluid volume. A flow control valve is located in at least one of the first and the second fluid pathways, and the flow control valve has a non-zero threshold value.

The subject of the invention is an impact energy absorbing device, comprising a shock absorber (3) with a cylinder (3a) and piston rod (3b), a sleeve (1) to be cut and a machining tool (2) surrounding the sleeve (1) to be cut, for machining the surface of the sleeve (1) to be cut, characterized in that the sleeve (1) to be cut is a cylinder (3 a) of the shock absorber (3).

Apparatus and methods are described where multiple linear and / or rotary actuators operate cooperatively in, for example, cross-linked arrangements to control the motion of sprung and unsprung masses in a vehicle. The actuators may include linear primary suspension actuators, spring perch actuators and / or rotary roll-bar actuators that, in some operating modes, are driven directly or indirectly by one or more hydraulic machines.

A damper including a tube, a piston, and a base line valve. The base line valve arranged in fluid communication with at least one of a first and second working chamber of the tube. The base line valve includes a housing, a plug slidably disposed in the housing along a valve axis between open and closed positions, and a spring. The plug includes a plug nose extending through an opening of the housing. The plug nose includes a first annular surface and a second annular surface. The first annular surface being sealingly engaged with a seat of the housing when the plug is in the closed position. The second annular surface being positioned radially inward of the seat by a first dimension when the plug is in the closed position and by a second dimension greater than the first dimension when the plug is in the open position.

A shock absorber includes a first passage provided in a piston and through which a working fluid moves from a chamber on an upstream side to a chamber on a downstream side in a cylinder due to movement of the piston, a first damping force generation mechanism provided in the first passage to generate a damping force, a second passage (141) provided in a piston rod (21), and a fixing member fixed to the piston rod (21) to form the second passage (141), and a second damping force generation mechanism provided in the second passage (141) to generate a damping force, in which a throttle member (161) provided in the second damping force generation mechanism, including a plurality of notch parts (171) at substantially regular intervals in a circumferential direction to form a throttle flow path (76) in the second passage due to the notch parts (171), and formed to have a flow path area of the throttle flow path (76) that is constant regardless of an attachment position thereof in the circumferential direction is further provided.

The utility model belongs to the technical field of dampers, and particularly relates to a magnetorheological damper which comprises an outer cylinder, an inner cylinder is coaxially arranged in the outer cylinder, and a circulation channel is reserved between the outer side wall of the inner cylinder and the inner side wall of the outer cylinder. The circulating holes are formed in the top and the bottom of the side wall of the inner cylinder, and the circulating channel communicates with the interior of the inner cylinder through the circulating holes, so that the magnetorheological fluid circularly flows between the circulating channel and the interior of the inner cylinder; and the side wall of the inner cylinder is filled with the anti-freezing cooling liquid, and the anti-freezing cooling liquid is used for heat exchange with the magnetorheological fluid. According to the utility model, the problems of magnetorheological fluid sedimentation and temperature rise can be solved.

Methods and apparatus for position sensitive dampening with an active valve. In one aspect a fluid damper is provided comprising a damper chamber divided by a piston into a primary compression and a primary rebound chamber; a secondary compression chamber in fluid communication with the damper chamber; and an active valve controlling fluid flow out of the secondary compression chamber.

A sealing device for hydraulic equipment according to the invention includes an outer member having an annular shape, an inner member inserted into the outer member, and a seal ring housed in an annular groove disposed in the outer circumference of the inner member and abutting on the outer member to prevent a liquid from passing through a gap between the outer member and the inner member. The annular groove of the inner member has a bottom portion including a recess for restraining axial displacement of the seal ring relative to the annular groove.

The invention relates to a system for steering a leaning motor vehicle with two front wheels and to a leaning motor vehicle with two front wheels, system for steering a leaning motor vehicle with two front wheels. The system for steering a leaning motor vehicle with two front wheels comprising a first telescopic fork for a first wheel and a second telescopic fork for a second wheel. Each of the first telescopic form and the second telescopic fork comprising an upper telescopic outer tube and a lower telescopic outer tube, the lower telescopic outer tube being connected to a means for receiving a front wheel, a telescopic inner tube having a first end in longitudinal direction and a second end opposite the first end, the telescopic inner tube being configured to slidably engage with the upper telescopic outer tube and the lower telescopic outer tube, wherein the upper telescopic outer tube engages with the telescopic inner tube at the first end and the lower telescopic outer tube engages with the telescopic inner tube at the second end, and at least one mounting element connected to the upper telescopic outer tube and rigidly connected by means of at least two connecting elements to the respective other mounting element of the other fork, wherein the at least one respective mounting element are rotatably connected the respective connecting elements.

A method for assembling a damper assembly includes securing a damper interface to an outer surface of a pressure tube. The method includes securing an accumulator interface to an outer surface of an accumulator tube. The method includes, after securing the damper interface to the pressure tube and securing the accumulator interface to the accumulator tube, securing the pressure tube to the accumulator tube by pressure fitting the damper interface to the accumulator interface.

The invention discloses a nitrogen shock absorber and a design method of a connecting seat thereof, and relates to the technical field of connecting seats, the first end of a nitrogen cylinder module is connected with the first end of the connecting seat, the second end of the connecting seat is connected with the first end of a piston rod module, and a floating piston assembly is arranged in the nitrogen cylinder module; the position, corresponding to one side of the floating piston assembly, of the nitrogen cylinder module is used for storing nitrogen, the position, corresponding to the other side of the floating piston assembly, of the nitrogen cylinder module is used for introducing hydraulic oil, the first end of the piston rod module is used for being connected with a suspension, and the second end of the piston rod module extends into the oil storage cylinder module through the first end of the oil storage cylinder module. Hydraulic oil in the oil storage cylinder module can enter the nitrogen cylinder module through oil passing holes in the piston rod module and the connecting base, and the compression adjusting valve is installed on the connecting base and used for adjusting the flow resistance of the hydraulic oil passing through the oil passing holes. The damping device is simple in structure, good in damping performance and good in road condition adaptability.

The piston type liquid damper comprises a cylinder body, a piston piece, a first connecting ring and a pressure relief piece, the piston piece is movably installed in the cylinder body, the first connecting ring is fixedly installed at the right end of the cylinder body, and the pressure relief piece is installed in the cylinder body and connected and matched with the piston piece. The piston piece comprises a piston rod, a movable piston block and a fixed piston block, and one end of the piston rod penetrates through and slides into the cylinder body in a sealed mode. The powerful balance spring is arranged to support the pressure relief piston, when the protruding block is subjected to overrun pressure, the pressure relief piston is pushed to displace to extrude the powerful balance spring to unload internal pressure, the device structure is protected, meanwhile, the corrugated design of the inner side of the cylinder body is matched with the cooling fins to enhance the heat dissipation capacity, and the service life of the device is prolonged. Therefore, the device has the advantages that pressure generated by instant excessive impact is relieved, the structure of the device is protected, meanwhile, heat dissipation is enhanced, and the service life of the device is prolonged.

The invention relates to a damping device (28) for a bicycle (10), said damping device comprising an outer tube (30) and an inner tube (32) located coaxially to the outer tube, wherein a compensation chamber (34) for receiving hydraulic fluid is formed between the outer tube (30) and the inner tube (32), and also comprising a piston (40) which is connected to a piston rod (42) and can be moved back and forth within the inner tube (32), wherein the piston (40) divides the interior of the inner tube (32) into a working chamber (44) that is free of the piston rod and a working chamber (46) that contains the piston rod, wherein the damping device (28) also comprises a valve assembly (50) and an adjustment device (55) for adjusting the damping of the valve assembly (50) in the rebound stage and / or the compression stage, and wherein the damping device (28) has a gas reservoir (98) which is located coaxially to the adjustment device (55) and encircles the adjustment device (55).