1926results about "Liquid based dampers" patented technology

Disclosed herein is a sway bar system comprising a damping link that couples a first end of a sway bar to a first location on a vehicle. The damping link is comprised of a body comprising a damping chamber and a reservoir. There is also a through shaft coupled to a piston, where the piston divides the chamber into a first chamber and a second chamber. A high-pressure line is fluidly coupled with the chamber and the reservoir and allows fluid to flow from the first chamber and the second chamber to the reservoir. A low-pressure line is fluidly coupled with the chamber and the reservoir and allows fluid to flow from the reservoir to the first chamber and the second chamber. The high-pressure line and the low-pressure line assist in self-centering the sway bar.

The invention provides a semi-active control type shock absorber for a railway vehicle, and relates to the technical field of shock absorbers, an oil storage cylinder is sleeved outside a working cylinder, and an oil storage cavity is arranged between the oil storage cylinder and the working cylinder; the piston valve assembly is fixedly arranged at one end of the piston rod, the piston rod and the piston valve assembly are both arranged in the working cylinder, and the piston valve assembly moves in the working cylinder through the piston rod and divides the internal space of the working cylinder into a compression cavity and a stretching cavity; a guide assembly is arranged on one side of the working cylinder, an oil storage cylinder base is arranged on the other side of the oil storage cylinder and the other side of the working cylinder, and the oil guide pipe is arranged in the oil storage cavity. The electromagnetic regulating valve assembly, the electromagnetic switch valve assembly and the damping valve assembly are all fixedly arranged on the side face of the oil storage cylinder base. According to the semi-active control type shock absorber, the requirements of different dampers at the same speed of a vehicle can be met, the semi-active control type shock absorber gradually replaces an original passive shock absorber so as to meet various types of damping requirements, and more comfortable and excellent riding experience is brought to passengers.

A head unit system for controlling an object includes a head unit device that include shear thickening fluid (STF) and a chamber configured to contain the STF. The chamber further includes a set of gates between a front channel and a back channel. The set of gates includes a bypass opening set. The head unit device further includes a piston housed at least partially radially within the chamber. The set of gates is configured to control flow of the STF between the front channel and the back channel to control rotational movement of the object.

The invention relates to a base, a shock absorber assembly, a suspension system and a vehicle. The base is used for being matched with a piston and comprises a piston connector and a first communicating pipeline. The piston interface includes a first inlet and outlet and a second inlet and outlet. The first inlet and outlet is used for communicating with the first cavity of the piston. The two ends of the first communicating pipeline are connected with the first in-out opening and the second in-out opening correspondingly. The first communicating pipeline is provided with a first control connector and a damping connector. And the first control interface is used for being connected with a first electromagnetic valve for controlling on-off of the first communicating pipeline. The damping interface is used for being connected with a damping valve for controlling fluid flow damping of the first communicating pipeline. The piston connector and the first control connector are located on different surfaces. The piston interface and the damping interface are located on different surfaces. The base is integrated with the piston connector, the first control connector and the damping connector, so that the shock absorber assembly can be connected with the first electromagnetic valve and the damping valve, and the function integration level of the shock absorber assembly can be improved.

A head unit system for controlling an object includes a head unit device that include shear thickening fluid (STF) and a chamber configured to contain the STF. The chamber further includes a set of gates between a front channel and a back channel. The set of gates includes a bypass opening set. The head unit device further includes a piston housed at least partially radially within the chamber. The set of gates is configured to control flow of the STF between the front channel and the back channel to control rotational movement of the object. An accessory module assists in control of the object.

Hydraulic damper(1000) for furniture doors or drawers. Damper(1000) comprises housing(1) having a closed first end(14) and a second end provided with lid(7); and piston(2) movable in housing(1) along longitudinal piston axis(A). Piston(2) defines first and second chambers(11,12) inside housing(1), respectively at first and second end-sides of piston(2). Piston(2) comprises circumferential groove(24) defined between circumferential first and second shoulders(241,242). Groove(24) is provided with annular collar(5) axially movable between first and second shoulders(241,242). Collar(5) is formed from elastic material to reversibly contact inner surface(13) of housing(1) when radially expanded when subjected to hydraulic-pressure forces parallel to axis(A). First shoulder(241) is arranged allowing hydraulic fluid to flow on collar(5) when collar(5) contacts first shoulder(241). Second shoulder(242) is arranged blocking hydraulic fluid from flowing on collar(5) when collar(5) contacts second shoulder(242). Piston(2) is provided with channel(21) arranged to provide fluid flow communication between first and second chambers(11,12).

A head unit system for controlling an object includes a head unit device that include shear thickening fluid (STF) and a chamber configured to contain the STF. The chamber further includes a set of gates between a front channel and a back channel. The set of gates includes a bypass opening set. The head unit device further includes a piston housed at least partially radially within the chamber. The set of gates is configured to control flow of the STF between the front channel and the back channel to control rotational movement of the object. An accessory module assists in control of the object.

A solenoid includes a first fixed iron core and a second fixed iron core located on a first end side and a second end side of an axial direction of a coil, a first movable iron core and a second movable iron core located therebetween and attracted by the first fixed iron core and the second fixed iron core by passage of current through the coil, respectively, a spring housed in a spring chamber formed on the first fixed iron core side of the first movable iron core and biasing the first movable iron core to the second fixed iron core side, a leaf spring that regulates movement of the first movable iron core to the second fixed iron core side with respect to the second movable iron core, and a throttle passage that causes the spring chamber to communicate with outside.

A damper assembly includes a rod elongated along an axis. The damper assembly includes a body supported by the rod, the body having a first surface and a second surface opposite the first surface. The body and the rod define a passage between the body and the rod, the passage extending from the first surface of the body to the second surface of the body.

The present disclosure relates to a hydraulic damper comprising a main tube, a piston assembly, a base valve assembly, and at least one hydraulic compression stop assembly cooperating with a compression valve assembly, and comprising a pin disposed slidably within the piston rod and biased to project an activating tip towards the compression chamber. Said compression valve assembly comprises at least one deflectable or floating disc covering compression flow passages, and biased by a piston member slidable along said axis and normally abutting a retaining surface, and a pressure chamber having one surface defined by a surface of said piston member abutting said retaining surface, wherein said pin upon sliding inside the piston rod facilitates a flow of the working liquid from the compression chamber into said pressure chamber to increase biasing load on said at least one deflectable or floating disc.

The invention relates to the field of electromagnetic valves, in particular to a valve body unit, an electromagnetic valve with the valve body unit and an electric control hydraulic shock absorber with the valve body unit. The hydraulic unit comprises a main valve assembly; the valve plate unit is arranged on the main valve assembly; the main valve assembly comprises a main valve shell. An oil channel is arranged on the main valve shell; the valve plate unit comprises a control valve plate; the control valve plate is arranged at the end part of the main valve shell; the control valve plate can deform; after the control valve plate is deformed, a communication channel is formed at the joint of the control valve plate and the main valve shell; through the arrangement of the control valve plate, after the current of the coil unit is cut off, overflow and discharge of hydraulic oil can be achieved through deformation of the control valve plate.

A damper assembly includes a housing having a tubular shape defining a main chamber extending along a center axis. A piston is movable along the center axis and divides the main chamber into a compression chamber and a rebound chamber. The piston includes a piston body defining a frequency-adaptive orifice (FAO) passage providing fluid communication between the compression chamber and the rebound chamber. The piston includes an FAO valve assembly having an FAO cover member configured to block fluid flow therethrough in response to application of a low-frequency excitation, and allowing fluid flow through the FAO passage in response to application of a high-frequency excitation. The FAO valve assembly also includes a tappet configured to translate relative to the piston body to bias the FAO cover member to selectively cover the FAO passage in response to the application of the low-frequency excitation.

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.

Assembly including an aircraft turbine engine and a pylon for mounting the turbine engine to an element of the aircraft. The pylon includes members for suspending the turbine engine, the members being connected to the turbine engine in at least one plane which is perpendicular to the axis and which is located upstream of the combustion chamber of the turbine engine, such that the turbomachine is cantilevered to the pylon, The assembly further includes at least one damper which connects the turbomachine to the pylon and which is located in a plane perpendicular to the axis located downstream of the combustion chamber, the damper being configured to limit the relative movements between the turbine engine and the pylon without transmitting force.

A shock absorber body assembly is disclosed that is includes a shock body formed of a cylinder defining a top cylinder end and a bottom cylinder end, and having a cylinder wall that surrounds a cylinder cavity. The cylinder wall is defined by a solid interior portion and a raised cooling pattern disposed on and proud of an exterior side of cylinder wall. The raised cooling pattern is comprised of one or more fins, wherein the raised cooling pattern is configured to provide for heat transfer from hydraulic fluid within the cavity of the cylinder cavity to an environment external to the shock absorber body assembly. The raised cooling pattern includes one or more cooling fins that extend along a length of the cylinder in a straight line and extend outwardly from the cylinder wall in an orthogonal direction, a cooling lattice mesh, or a cooling gyroid mesh.

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 magnetorheological damping element based on the winding type magnetic circuit built-in piston comprises a hydraulic cylinder and a magnetorheological damper, the hydraulic cylinder comprises a hydraulic cylinder end cover, a hydraulic cylinder barrel, a double-outlet-rod hydraulic piston and a shared end cover, and the magnetorheological damper comprises a damper outer cylinder barrel, the built-in piston, a wire rod and a damper end cover; the hydraulic cylinder and the magnetorheological damper are connected together through the common hydraulic piston and the common end cover; the magnetic isolation disc is installed between the front magnetic conduction block and the rear magnetic conduction block and is jointly arranged in the magnetic conduction cylinder to form a flow channel baffle, and the interior of the built-in piston forms a magnetorheological fluid flow channel through center flow holes of the front end cover and the rear end cover, gaps between the front end cover and the flow channel baffle, gaps between the rear end cover and the flow channel baffle and gaps between the magnetic conduction cylinder and the flow channel baffle. A winding type magnetic circuit is formed by arranging the magnetism isolating part. The structure effectively utilizes a magnetic field through a guide magnetic circuit, can improve the utilization rate of the magnetic field, can provide damping force matched with the hydraulic cylinder, and is compact in structure and small in size.

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 invention relates to a self-adaptive force output and energy consumption bridge vibration and vibration control inerter tuning device, and belongs to the technical field of vibration control. Comprising a roll shaft support, a spring rod, a main inerter element, a box chamber main body, a secondary inertia flywheel, a flow guide pipe, a transmission connecting rod and a flow baffle, the main inerter element penetrates through and is arranged in the box chamber main body, the outer end of the main inerter element is connected with the spring rod, the spring rod is connected with the roll shaft support, and the roll shaft support is respectively fixed with the bottom surface of a main beam and the top of a bridge pier; in addition, the flow guide pipe is arranged in the box chamber body, a flow baffle and a transmission connecting rod are further arranged in the flow guide pipe, and the transmission connecting rod is further connected with a secondary inertia flywheel. The damping device is achieved through a hydraulic mechanism, and the damping device with the self-adaptive inerter coefficient is formed through linkage of the inerter devices in the main box chamber and the auxiliary box chamber, so that the purposes of changing the inerter coefficient in real time and damping are achieved. The shock resistance, the transmission efficiency, the energy consumption effect, the structural rigidity and the stability of a vibration reduction system can be improved.

The invention discloses a hydraulic oil cylinder with an axial supporting protection function, and belongs to the technical field of hydraulic cylinders, the hydraulic oil cylinder comprises an outer cylinder body, an oil cylinder rod and a first piston, a center oil cavity is formed in the outer cylinder body, the first piston is fixedly connected to the bottom of the oil cylinder rod, and the oil cylinder rod and the first piston are both slidably connected to the interior of the center oil cavity; a pressure buffering structure is connected into the outer cylinder body, when the oil cylinder rod bears pressure, the pressure buffering structure and the magnetic supporting structure are matched with each other to jointly share the pressure borne by the oil cylinder rod, a supporting rod in the magnetic supporting structure can transmit the pressure of the oil cylinder rod to a second piston, and therefore the oil cylinder rod is prevented from falling off. The second piston slides downwards in the storage cavity and extrudes the magnetorheological fluid, the stress of the oil cylinder rod is relieved through the buffering characteristic of the magnetorheological fluid, and therefore protection on the oil cylinder rod is effectively enhanced, and the stability and reliability of the hydraulic oil cylinder under the pressure effect are improved.

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.

A suspension system including hydraulic circuits that extend between dampers located at opposite corners of the vehicle and at least one load distribution unit that is connected in fluid communication with at least two hydraulic circuits. The load distribution unit includes a manifold block with a cylinder bore, a pair of pressure tubes, a piston rod assembly, and an integral rod guide and pressure tube coupler. The pressure tubes are partially received in the cylinder bore to define a pair of opposed cylinders and mate with the integral rod guide and pressure tube coupler. The piston rod assembly includes a piston rod and a pair of opposed pistons that are slidingly received within the opposed cylinders. In addition to retaining the pressure tubes, the integral rod guide and pressure tube coupler supports and permits the piston rod to slide longitudinally relative to the manifold block.

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.

Provided are a shock absorber, a suspension system and a vehicle. The shock absorber comprises: a shock absorber cylinder (3) having a first space (8) and a second space (9); a piston valve (4), the piston valve (4) dividing the first space (8) into a first chamber (801) and a second chamber (802); a first damping valve (21), a first inlet (211) of the first damping valve (21) being in communication with the second chamber (802), and a first outlet (212) of the first damping valve (21) being in communication with the second space (9); a second damping valve (22), a second inlet (221) of the second damping valve (22) being in communication with the second space (9), and a second outlet (222) of the second damping valve (22) being in communication with the second chamber (802); and a compression module (103), the compression module (103) dividing the second chamber (802) into a first sub-chamber (109) and a second sub-chamber (110), and the second sub-chamber (110) being used for storing gas.

The invention discloses a variable-damping shock absorber and a motor vehicle, and the variable-damping shock absorber comprises a damping tube filled with a damping medium; the piston rod is arranged in the damping tube and does telescopic motion in the axial direction of the damping tube; the working piston is connected with the piston rod and divides the internal space of the damping tube into a first working cavity and a second working cavity, and two damping medium control loops are formed between the first working cavity and the second working cavity; the first electromagnetic valve and the second electromagnetic valve are arranged on the two damping medium control loops respectively, a first one-way valve is arranged at the front end of the first electromagnetic valve, and a second one-way valve is arranged at the front end of the second electromagnetic valve. Damping can be independently adjusted when the damping shock absorber stretches out and draws back, meanwhile, the response time can be obviously shortened through the structure, and vehicle controllability and riding experience are greatly improved.

Rheological-dynamic shock absorber, comprising: a housing (100) provided with an internal cavity (110); a piston assembly (200) slidably arranged along an axial direction of the inner cavity (110), wherein the piston assembly (200) separates the inner cavity (110) into a first fluid chamber (111) and a second fluid chamber (112), wherein at least one flow channel (200a) is provided on the piston assembly (200) and is connected to the first fluid chamber (111) and the second fluid chamber (112), a damping fluid flows between the first fluid chamber (111) and the second fluid chamber (112) through the flow channel (200a), one of the housing (100) and the piston assembly (200) is connected to a vibration element, and the other of the housing (100) and the piston assembly (200) is connected to an element to be buffered; and a swirl module (300) which is pushed onto the piston arrangement (200) and arranged in the first fluid chamber (111), wherein the swirl module (300) comprises at least one rotatable swirl vane (310) and the damping fluid causes the swirl vane (310) to rotate when it flows between the first fluid chamber (111) and the second fluid chamber (112).

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.