184results about "Actuator accumulators" patented technology

An IFP is disclosed. The IFP includes a sealing channel formed axially about an outer diameter (OD), the sealing channel including at least two walls where the at least two walls of the sealing channel having a smaller OD than an inner diameter (ID) of a chamber and a channel is formed between the at least two walls. The IFP also includes an anti-tipping feature fixedly coupled with at least a portion of one wall of the sealing channel, the anti-tipping feature increasing a length of the IFP.

An auxiliary hydraulic system including an accumulator, a control valve, and a hydraulic connector. The accumulator connects to a primary hydraulic system including a hydraulic pump, a brake circuit, and a steering circuit. The control valve selectively allows or prevents flow from an accumulator to at least one of the brake circuit and the steering circuit. The hydraulic connector selectively connects an external source to the accumulator and the control valve.

1. Method 2. The invention relates to a method for producing at least one part of an accumulator housing (10) for a hydraulic accumulator, said method having the following method steps: - providing accumulator housing parts (12, 14) which are to be connected to one another along mutually adjacent end sides (16, 18), of which at least one end side (16) has a material accumulation (20); - moving the adjacent accumulator housing parts (12, 14) together in such a way that the material accumulation (20) comes into contact with the adjacent end side (18); and simultaneously or subsequently - melting the material accumulation (20) by means of a welding process, and further moving the two accumulator housing parts (12, 14) together during the welding process with a predefinable pressing force; and simultaneously - forming a weld seam running along a connecting point (42) between the accumulator housing parts.

The mechanism in the invention provides a solution for automated, remote regulating high pressure air in the industrial air tube system. With double layer electromagnetic valves, the mechanism assure the comfortable and safe working platform for humans and equipment. The mechanism comprises: mechanical valve, 20 L pneumatic tank, pressure gauge, sealed metal box, static disc, electromagnetic relay with movable stem, capacitor, low pressure air tube, high pressure air tube, electrical wire, electromagnetic relay.

The invention relates to the technical field of hydraulic control, and discloses a loading oil cylinder hydraulic system of a loading vehicle, which comprises a motor pump set, a loading oil cylinder, an oil cylinder upper cavity energy accumulator set and an oil cylinder lower cavity energy accumulator set. The device is characterized in that a rodless cavity of the loading oil cylinder is communicated with the oil cylinder upper cavity energy accumulator group through an oil cylinder upper cavity loading pipeline; a rod cavity of the loading oil cylinder is communicated with the oil cylinder lower cavity energy accumulator set through an oil cylinder lower cavity loading pipeline. Under the dynamic working condition, the volume change of the two working cavities caused by the displacement of the loading oil cylinder piston is absorbed or compensated by the oil cylinder upper cavity energy accumulator group and the oil cylinder lower cavity energy accumulator group which are communicated with the loading oil cylinder piston, so that the fluctuation of the pressure in the two cavities is inhibited, and the stability of the output loading force is maintained. According to the invention, the stability of dynamic loading force when the loading vehicle runs on an uneven road surface can be obviously improved, and the accuracy of dynamic loading test is ensured.

The invention relates to the technical field of compressor lubricating oil station energy accumulators, in particular to an energy accumulator liquid level automatic adjusting system which can achieve automatic oil filling and nitrogen filling and improve the filling efficiency and the system operation stability, an energy accumulator is connected with a liquid level transmitter, and the liquid level transmitter, an oil supply switch valve and a nitrogen filling switch valve are all connected with a distributed control system. When the liquid level in the energy accumulator is low to the first liquid level, the distributed control system transmits a signal to close the oil supply switch valve, and the oil pump injects oil to the energy accumulator through an opening in the oil supply perforated check valve and the oil filling check valve; when the liquid level in the energy accumulator reaches the second liquid level, the oil supply switch valve is opened to enter an oil supply waiting state, and at the moment, the oil pump still injects oil into the energy accumulator until the liquid level reaches the third liquid level; when the liquid level in the energy accumulator reaches a third liquid level, the nitrogen charging switch valve is kept in a closed state, and at the moment, an oil-gas balance state is achieved; and when the liquid level in the energy accumulator reaches the fourth liquid level, the nitrogen charging switch valve is opened to charge nitrogen.

An agricultural machine comprises a tool-holder chassis (200), at least one inter-row unit (100), and a hydraulic system (600) comprising a delivery line (301) suitable for being connected to a primary pump (P) to feed pressurized oil to a hydraulic actuator (103) of the inter-row unit and a return line (302) connected to a reservoir (303); the hydraulic system (600) comprises a divider-distributor (6) arranged in the delivery line (301) and having a primary outlet (60) connected to the hydraulic actuator (103) of the inter-row unit (100) and a plurality of secondary outlets (61) connected to the services of the tool-holder chassis (200); a distributor (4) is arranged in the primary outlet (60) of the divider-distributor (6) and has a first outlet (41) connected to the hydraulic actuator (103) of the inter-row unit and a second outlet (42) connected to the return line (302) leading to the reservoir (303); the hydraulic system (600) being configured so that the distributor (4) can be constantly crossed by pressurized oil from the divider-distributor (6).

An accumulator cover for an accumulator for an anti-lock brake system includes a porous body part that closes one open side of a cylindrical space of the accumulator and includes a plurality of micropores through which gas passes, wherein a piston is installed to be reciprocally movable in the cylindrical space. The accumulator cover also includes a body coupling part connected to the porous body part and coupled to a body of the accumulator in which the cylindrical space is disposed. A method for manufacturing the accumulator cover is also provided.

A flow-through folding membrane accumulator comprises a hollow cylindrical housing and a folding flexible membrane disposed in an interior volume of the housing. The membrane defines an interior liquid channel extending through the membrane along a longitudinal axis, and liquid coolant flows from an inlet of the accumulator through the interior liquid channel to an outlet of the accumulator. The membrane is sealed to the housing such that an air-tight cavity filled with a gas is formed between the housing and the membrane. The cavity radially surrounds the internal liquid channel, with the membrane separating the cavity and the internal liquid channel. Volumes of the cavity and channel change in response to deformation of the membrane and based on pressures of the liquid coolant. The membrane may comprise multiple folds extending parallel to the longitudinal axis and distributed circumferentially around the axis.

An ECU is configured to determine the life of a pressure storage tank. The pressure storage tank has a gas chamber filled with gas, an oil chamber connected to a common passageway, and a piston dividing the gas chamber and the oil chamber. The pressure storage tank is configured to store hydraulic oil in the oil chamber and to release the hydraulic oil from the oil chamber. The ECU calculates a movement amount of the piston based on the volume change of the gas chamber. The ECU determines that the life of the pressure storage tank has ended when an integrated value of the calculated movement amount exceeds a threshold value.

An accumulator assembly is interposed hydraulically between a source of pressurized fluid and at least one wheel brake of a corresponding first or second pair of wheels. The accumulator assembly includes a medium pressure accumulator, a nonpowered MPA fill valve interposed fluidically between a pump-side passage of the medium pressure accumulator and the source of pressurized hydraulic fluid, a powered MPA one-way valve interposed fluidically between a brake-side passage of the medium pressure accumulator and the at least one corresponding wheel brake, and an MPA check valve interposed fluidically between the brake-side passage of the MPA cavity and the at least one corresponding wheel brake. An electronic control unit is provided for controlling at least one of the secondary brake module and the master cylinder responsive to at least one braking signal. The accumulator assembly facilitates a non-powered evac / fill phase of lifetime operation of the brake system.

To further improve a pressure accumulator of a liquid pressure assembly of a vehicle brake device, especially improve the behavior of a pressure accumulator at a cut-off border portion of a medium between a fluid chamber and an accumulation chamber.SOLUTION: In a pressure accumulator (34) of a liquid pressure assembly of a vehicle brake device equipped with a piston (44) and a packing sealing the piston (44) with respect to a piston guide (42), the packing is configured to include an elastomer ring (64) held by the piston (44). A layer ring (66) is provided, which is held by the piston (44) and is pressed against the piston guide (42) by the elastomer ring (64).SELECTED DRAWING: Figure 4

A work machine includes a first hydraulic circuit, a second hydraulic circuit, a single electric motor, and a controller. The first hydraulic circuit includes a first pump and a first valve. The first pump is configured to drive a first group of hydraulic accessories. The second hydraulic circuit includes a second pump and a variable pressure valve. The second pump is configured to drive a second group of hydraulic accessories. The single electric motor is connected / configured to drive the first pump and the second pump. The controller configured to estimate a torque of the second pump, estimate a total torque of the motor as a sum of a current operating torque of the motor and the estimate of the torque of the second pump, and, on condition the total torque of the motor is greater than a threshold torque, lower an operating torque of at least one of the first pump or the second pump.

The invention belongs to the technical field of underwater operation, and particularly relates to an embedded plough cable pressing device hydraulic system which comprises a first valve block, a second valve block, an energy accumulator and a pressure monitoring unit. The first valve block comprises a first electric proportional reversing valve, a first balance valve, a second balance valve, a first electromagnetic reversing valve and a second electromagnetic reversing valve; the second valve block comprises a second electric proportional reversing valve, a throttling valve and a pilot hydraulic control one-way valve. The pressure monitoring unit is used for monitoring the internal pressure of the energy accumulator. The requirement for the working volume of the energy accumulator can be lowered, control over the oil cylinder of the cable pressing device under various working conditions can be achieved, the oil cylinder can be actively controlled to stretch out and draw back to complete cable loading, cable unloading and other operations, the oil cylinder can be passively retracted to protect the cable when the external load is too large, automatic reset is achieved when the load is reduced, and the service life of the cable pressing device is prolonged. And the situation that the oil cylinder cannot extend out due to too low pressure of the energy accumulator caused by oil leakage can be avoided.

A load dampening system 60 for a working vehicle is provided. The load dampening system comprises a load handling hydraulic actuator 28 configured to support a load carried by the working vehicle and an accumulator apparatus 100 for storing pressurised hydraulic fluid. The accumulator apparatus is selectively connectable to the load handling hydraulic actuator to act as a compliant element which dampens pressure fluctuations in the load handing hydraulic actuator. The load dampening system also comprises a control system 70 configured to adjust a compliance of the accumulator apparatus to adjust the extent to which the accumulator apparatus dampens pressure fluctuations in the load handling hydraulic actuator.

The application discloses a kind of methods suitable for pressure oil tank pressure element monitoring and setting under different operating conditions of unit, the unit operating condition in the monitoring system is acquired, judges governor hydraulic system pressure oil tank valve state;Confirm that governor hydraulic system pressure oil tank pressure element has monitoring and control condition under the operating condition of unit, the monitoring and control of pressure measuring element are carried out along with the rise or drop of hydraulic system oil pressure under the operating condition of unit, and pressure oil tank pressure element monitoring and control process is executed, realizes pressure oil tank pressure measuring element online monitoring and control;The application confirms that governor hydraulic system pressure oil tank pressure measuring element has online setting condition under the unit maintenance operating condition, changes output oil pressure by starting pressurizing pump control device to carry out online setting, executes pressure oil tank pressure measuring element online setting process under the unit maintenance operating condition, realizes pressure oil tank pressure measuring element online setting function.

Example implementations relate to a pressure regulator assembly for a closed fluid loop of a CDU. The pressure regulator assembly has a cylinder having an internal volume, and first and second hollow pistons slidably connected to the cylinder to split the internal volume into a first volume portion having cooling fluid, a second volume portion having driver fluid, and a third volume portion having compressible matter. The first volume portion is fluidically connected to the closed fluid loop. The first hollow piston is reciprocated by the compressible matter to maintain operating pressure of the cooling fluid in the closed fluid loop. The second hollow piston is driven by the driver fluid in response to predefined pressure drop of the cooling fluid during predefined time period, to inject additional cooling fluid from the first volume portion into the closed fluid loop to restore pressure level of cooling fluid to operating pressure.

This invention relates to a high-power, high-energy gas source system, comprising an energy storage module, a rapid drive module, a control oil accumulator, and a replenishing solenoid valve. Multiple energy storage modules and rapid drive modules are included, with each energy storage module corresponding to one rapid drive module. The energy storage modules are connected to each other via high-pressure ball valves. Each energy storage module is connected to a replenishing hose. Each energy storage module includes a high-pressure nitrogen cylinder. The control oil accumulator is connected to the rapid drive module and is connected to a replenishing hose via a replenishing solenoid valve. This invention provides a high-power, high-energy gas source system and control method where each piston-type accumulator can operate independently, significantly improving the load-driving capacity; it can continuously and rapidly provide high-pressure, high-flow-rate hydraulic oil, thereby achieving rapid action on ultra-high loads.

The invention relates to a hydraulic accumulator, in particular a hydraulic accumulator in the form of a piston accumulator, having a separation element 10 arranged in an accumulator housing 14, which fluid-tightly separates two fluid chambers 16, 18 from one another, in particular a closed accumulator chamber 20 with a working gas, from a liquid chamber 22 with a working fluid, such as a hydraulic oil, and a fluid connection 24 is fluidly connected to one of the two fluid chambers. The hydraulic accumulator is characterized in that the fluid connection 24 has a magnetic field generating device 42 received in a fixed position therein, which separates magnetizable particles from the fluid passing through the fluid connection 24 in order to purify said fluid.

An example electrohydraulic actuator includes: a housing; a hydraulic cylinder actuator disposed within the housing and comprising a cylinder and a piston, wherein the piston divides an internal space of the cylinder into a first chamber and a second chamber, and wherein the hydraulic cylinder actuator is unbalanced; an accumulator disposed within the housing and comprising an annular fluid chamber encircling the cylinder of the hydraulic cylinder actuator, wherein the accumulator is configured to provide boost fluid flow or receive excess fluid flow comprising a difference between the first fluid flow rate and the second fluid flow rate; and an assembly disposed within the housing and comprising: (i) a pump configured to be a flow source, and (ii) an electric motor configured to drive the pump to provide fluid flow to the first chamber or the second chamber of the hydraulic cylinder actuator to drive the piston.

The invention relates to an apparatus (1) comprising a plurality of tools (2) each having at least one hydraulic chamber (6) for hydraulic liquid, and a hydraulic manifold (4) configured for storing pressurized hydraulic liquid and supplying hydraulic liquid to said plurality of tools (2), wherein each tool (2) comprises a communication conduit (7) extending between the hydraulic chamber (6) and said hydraulic manifold (4), the hydraulic chamber (6) having varying volume during the operation of the tool (2). The apparatus (1) is characterized in that each tool (2) comprises a hydraulic buffer unit (8) for preventing propagation of hydraulic pulsations between the tool (2) and the hydraulic manifold (4) in response to the varying volume of the hydraulic chamber (6), wherein the hydraulic buffer unit (8) has a buffer chamber (9) having varying volume in response to varying volume of the hydraulic chamber (6).

The present invention discloses an energy-saving multi-plate clutch two-speed transmission and an energy-saving shifting method thereof, comprising a hydraulic control system, a first accumulator connected to a first hydraulic chamber, and a second accumulator connected to a second hydraulic chamber; when the first multi-plate clutch needs to be kept in an engaged state, the first multi-plate clutch can be kept in an engaged state by the hydraulic pressure stored in the first accumulator; when the second multi-plate clutch needs to be kept in an engaged state, the second multi-plate clutch can be kept in an engaged state by the hydraulic pressure stored in the second accumulator; during the period when the first accumulator or the second accumulator outputs hydraulic pressure, the hydraulic control system is in a shutdown state, which not only effectively reduces energy consumption and improves the overall cruising range, but also reduces fatigue of the hydraulic control system and greatly reduces the frequency of failures of the hydraulic control system, thereby extending the maintenance cycle and reducing usage and maintenance costs.

Hydraulic accumulator, in particular a diaphragm accumulator, comprising at least two housing parts (10, 12) having fluid connection points (48, 50), which are held together by means of a locking ring connection (14) to form an accumulator housing (16) and with a separating element (20) movably arranged within the accumulator housing (16), which separates two media spaces (24, 26) from each other, characterized in that the housing parts (10, 12) are at least partially interlocked along adjacent wall sections (32, 34), one wall section (32) of one housing part (10) projecting over the other (12) to form a circumferential wall (36) towards the environment and encompassing a wall area (38) of the other housing part (12) in such a way that an engagement space (40) is created.which is provided at a point of the transition (42) from one housing part (10) to the other housing part (12) for receiving a retaining ring (44) of the retaining ring connection (14).

2. Hydraulic pressure accumulator, at least comprising a storage housing (10) and a separating device which separates two fluid spaces (12) from each other in the storage housing (10) and has two connection points (16) on the storage housing (10) for the supply and / or discharge of a fluid attributable to the respective fluid space (12), characterized in that at least one connection point (16) is provided with a protective device (26) which at least partially covers the areas subject to corrosion at this connection point (16) and which remains on the pressure accumulator over its lifetime.

This invention relates to a manual emergency operating system for a scientific research crane, comprising an emergency operation valve assembly, an accumulator, a winch valve assembly, and a remotely adjustable relief valve assembly. The emergency operation valve assembly is connected to the accumulator and, through the winch valve assembly, to the winch motor and winch brake, for manual emergency operation of the winch motor and winch brake. The remotely adjustable relief valve assembly is connected to the winch valve assembly for remotely adjusting the resistance during load lowering. In an emergency, this invention allows the crane operator to lower the load with low resistance manually, and allows the hook to move away from the crane. This reduces the impact of structural damage to the crane and the impact of load release on the hull. Furthermore, the manual operation allows for assessment of the situation of personnel near the crane, ensuring the safety of on-site personnel.

System comprising at least two separation devices (10, 12), one of which (10) has a bellows (14) with individual bellows folds (16) in the form of a bellows reservoir (36) that separates two media spaces (18, 20) from each other, and the other separation device (12) has a piston reservoir (38) whose reservoir piston (50) has an inner, trough-like recess (52) for receiving a working gas such that a compensator (21) is formed which is fluidly connected to one of the media spaces (18, 20) of the bellows (14) and separates a third media space (22) for the working gas, wherein a displacement volume (VS) corresponding to the volume (V) which the bellows (14) displaces in a movement between its predefinable minimum and maximum bellows length can be compensated by means of the compensator (21), characterized in that one of the two Disconnecting devices (10, 12) from their connection side (76,48) is only subjected to a predetermined nominal pressure, whereas the other separating device is simultaneously kept pressureless on its connection side (48, 76).

To provide an accumulator using an S-shaped bellows, which can reduce its weight while suppressing deterioration in durability.SOLUTION: An accumulator according to the present invention comprises an exterior body comprising a bottom, a shell, and a port, and a flexible S-shaped bellows provided inside the exterior body. When the bellows maximally expands in the accumulator, the bellows expands relative to a free state in which no load other than gravity is applied.SELECTED DRAWING: Figure 1

The invention discloses a piston type energy accumulator position detection mechanism and a control method thereof. The detection mechanism comprises a cylinder body, an end cover, a piston, a sleeve rod, a displacement sensor, a magnetic rod, an extension rod and a magnetic ring. The extension rod moves along with the piston, and a magnetic rod fixed on the displacement sensor is accommodated in a hollow cavity in the extension rod; the magnetic ring is fixed to the end of the extension rod. The displacement sensor measures the position of the piston in a non-contact mode by detecting the magnetic field change of the magnetic ring based on the magnetostriction or Hall effect principle. The device is further provided with a swing detection unit, radial deviation of the magnetic ring is detected through a Hall sensor arranged in the circumferential direction, and safety valves on the two sides of the sleeve rod are controlled to conduct directional exhaust according to the radial deviation, so that measurement errors caused by swing are compensated. The mechanism solves the problems that a traditional stay wire type sensor is prone to fatigue damage and a laser sensor is prone to pollution and failure, has the advantages of being compact in structure, convenient to install, high in anti-interference performance, long in service life and high in precision, and is suitable for piston position real-time monitoring and anti-collision protection under the high-frequency reciprocating working condition.

The present invention relates to a reservoir piston arrangement (10) according to the features of claim 1. A reservoir piston arrangement (10) is a pressure medium reservoir of an electronically slip-controllable vehicle brake system, which is used for intermediate storage of pressure medium released from wheel brakes within the context of brake pressure control. In particular in electrically powered vehicles, such a pressure medium reservoir is used for each braking process. In this case, a reaction pressure as low as possible of this pressure medium reservoir is particularly important, since this promotes the efficiency of the recuperation of braking energy, reduces friction between the reservoir piston arrangement (10) and the associated receiving parts, and minimizes wear on the guides and / or seals of the reservoir piston. For this purpose, a reservoir piston arrangement (10) is proposed which has a reservoir piston (12) with a first guide ring (14a) on a first circumference of a first skirt section (18a), which surrounds the piston skirt (18) and projects radially above a second skirt section (18b) of the piston skirt (18) which is larger in terms of its outer dimensions.

The invention relates to a piston accumulator having an accumulator housing (10) in which a separating piston (12) is longitudinally movably guided which separates two fluid chambers (14, 16), in particular separates a fluid chamber (14) having a working gas from a further fluid chamber (16) having an operating fluid, such as hydraulic oil, and which separating piston has a damping device (18), characterised in that, in addition to the damping device (18), an inflow device (20) is provided which interacts with the damping device (18) for damping a fluid flow out of the accumulator housing (10) by forming a throttle along a fluid path (22) and which releases a further fluid path (24) by bypassing the other fluid path (22) that has the throttle in order for fluid to flow into the accumulator housing (10).