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139results about "Fluid-pressure converters" patented technology
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Boosting device suitable for hydraulic fracturing ground stress test
ActiveCN224049465UMaterial strength using tensile/compressive forcesFluid-pressure convertersStructural engineeringHydraulic fracturing
The utility model discloses a pressure boosting device suitable for a hydraulic fracturing crustal stress test, which is sequentially connected with an upper rubber plug and a lower rubber plug of a crustal stress test device through a push-pull pressure relief conversion device, and comprises a pressure boosting cylinder body, a first pressure relief device, a second pressure relief device and a pressure relief device, the second inner cavity is sequentially connected with the upper rubber plug and the lower rubber plug through a push-pull pressure relief conversion device, an exhaust hole communicated with the first inner cavity is formed in the side wall of the pressure boosting cylinder body, and a water inlet and outlet hole communicated with the second inner cavity is further formed in the side wall of the pressure boosting cylinder body. The low-pressure piston is movably arranged in the first inner cavity, the high-pressure piston is movably arranged in the second inner cavity, and the force transmission column is connected with the low-pressure piston and the high-pressure piston. According to the utility model, the limited pressure in the coring drill rod can be increased to the test pressure required by the crustal stress test, so that the equipment loss risk during the crustal stress test is greatly reduced.
Owner:CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION
Position controller
PendingUS20260078783A1Fluid-pressure actuator safetyOperating means/releasing devices for valvesConvertersElectronic component
A positioner for a pneumatic actuator for actuating a control instrument, such as a control valve, of a process plant, may include an electropneumatic converter, such as a current-pressure converter; a circuit board which carries supply electronics for the electropneumatic converter a casing which comprises at least one electronics compartment in which at least one electronic component of the positioner, in particular the supply electronics, is accommodated, and a converter compartment, in which the electropneumatic converter is accommodated. The electronics compartment and the converter compartment may be spatially separated from one another. The converter compartment may be delimited at least partially by the circuit board.
Owner:SAMSON AG
A hydraulic device
The present invention relates inter alia to a hydraulic device which may be used as a hydraulic transformer. The hydraulic device comprising a housing, a first tubular cavity and a second tubular cavity both being provided within the housing. A piston structure is reciprocatable arranged within the housing and comprises a first piston and a second piston; wherein the first piston divides the first cavity into two chambers, and the second piston divides the second cavity into two chambers. Fluid passages for individually exchanging fluid between the chambers and the exterior of the housing are provided and each fluid passage comprising a controllable shut-off valve so as to provide the reciprocating movement of the piston structure by exchanging fluid between exterior and the two chambers of the first cavity, and said hydraulic transformed being configured to control the shut-off valves to selectively be in a closed state or in an open state.
Owner:AALBORG UNIV
Hydraulic cylinder and system with pressure intensification
A pressure cylinder includes a working cylinder and an intensification cylinder that is divided by a separator block. A working piston is arranged in the working cylinder and connected to a working rod that extends to an end portion. An intensification piston and an intensification rod are arranged in the intensification cylinder. A pump is configured to provide a pressurized hydraulic fluid to the pressure cylinder. A fluid reservoir is configured to supply a hydraulic fluid to the pump. A first valve is configured to selectively regulate hydraulic fluid flow between the pressure cylinder and the fluid reservoir and the pump. A second valve is configured to selectively regulate fluid flow between a first valve and the advance intensification chamber. A controller is in communication with the first valve and the second valve. The controller is configured to coordinate movement of the working piston and the intensification piston.
Owner:DOBEN LTD
Valve evacuation apparatus, control, and associated methods
An apparatus to evacuate fluid is disclosed herein. The example apparatus includes a pipe to transport flammable gas, the pipe including a first valve fluidly coupled to a first region of the pipe and a second valve fluidly coupled to a second region of the pipe, a ball valve implemented along the pipe between the first region and the second region, and a valve evacuation system to compress the flammable gas from the ball valve and pump the compressed flammable gas to the first region via the first valve when the ball valve is in the closed position such that the flammable gas from the ball valve is not vented to atmosphere.
Owner:TPE MIDSTREAM LLC
Linear driven transfer unit
The invention relates to a hydraulically driven transfer unit that is conditioned to high and low temperature values, allows fluids with wide viscosity ranges to be transferred to a system in the desired flow rate and pressure range with minimum heat loss.
Owner:ALTINAY SAVUNMA TEKNOLOJILERI ANONIM SIRKETI
Pneumohydraulic pressure intensifier
A pneumohydraulic pressure intensifier includes at least one pneumatic piston that is coupled to a hydraulic pump. The pressure intensifier includes a regulator which allows to set the hydraulic output pressure. The regulator is coupled to a hydraulic pilot control valve which is adapted to interrupt the air supply to the pneumatic piston when a set maximum pressure is reached.
Owner:WSENG
A lifting device for automobile repair
This invention discloses a lifting device for automobile repair, comprising an oil tank, an oil cylinder, and an oil pump. An oil suction pipe is provided between the input end of the oil pump and the oil tank, and a first one-way valve is installed on the oil suction pipe. An oil discharge pipe is provided between the output end of the oil pump and the oil cylinder, and a second one-way valve is installed on the oil discharge pipe. A return pipe is provided between the oil cylinder and the oil tank, and a shut-off valve is installed on the return pipe. An end cap is fixedly installed at the upper end of the oil tank. A piston plate is slidably and sealed inside the oil tank. A lifting airbag is provided between the piston plate and the end cap. The oil cylinder includes a piston rod, a piston body, and a cylinder body. A fixed pulley is rotatably installed on the end cap, and a pull rope is installed on the fixed pulley. The two ends of the pull rope are fixedly connected to the piston plate and the piston body, respectively. This invention improves the load-bearing capacity of the piston rod of the hydraulic jack by setting a lifting airbag and pulley structure between the oil cylinder and the oil tank, making the piston body less prone to oil leakage and damage.
Owner:ç« è¾¾
Liquefied gas cargo carrier emergency valve drive system
A backup emergency valve drive system for a liquified gas container, having hydraulic accumulators 4 supplying hydraulic fluid to emergency valves 6 of a liquefied gas vessel, and hydraulic pressure i
Owner:LGE IP MANAGEMENT CO LTD
Novel ultrahigh pressure supercharger structure
ActiveCN223825340UFluid-pressure actuator testingInternal combustion piston enginesPressure stabilizationReciprocating motion
The utility model provides a novel ultrahigh-pressure supercharger structure which is composed of an ultrahigh-pressure supercharger oil cylinder, a high-pressure cylinder connecting barrel, a high-pressure cylinder and the like. According to the working principle, the motor drives the oil pump, oil pushes the large piston, the large piston drives the small piston, and low-pressure media are converted into high-pressure media. Continuous pressure output is achieved through reciprocating motion of the piston, and the high-pressure one-way valve controls one-way flowing of media to ensure stable pressure. The supercharger can automatically reciprocate, so that the operation efficiency of the system is improved. The key parts are made of excellent materials, the high-pressure cylinder is made of high-strength alloy steel, the piston rod is made of high-strength alloy materials, and the sealing piece is pressure-resistant and wear-resistant. Meanwhile, an intelligent control system is arranged, working parameters can be adjusted, and a cooling and safety system is arranged to guarantee normal operation and operation safety of equipment. The wear condition of key parts needs to be checked regularly in daily life, oil quality in the oil cylinder is managed, the service life of equipment is prolonged, and stable performance is guaranteed.
Owner:SHANGHAI ZHIRUIER PRECISION EQUIP CO LTD
Work exchange type energy recovery device with leakage rate detection function
PendingCN121452222AFluid-pressure actuator safetyFluid-pressure actuator testingPower exchangeEnergy recovery
The invention provides a work exchange type energy recovery device with a leakage rate detection function, which is provided with a special circulation hole, the circulation hole is not communicated with a relative low-pressure fluid inlet and a relative low-pressure fluid outlet of the energy recovery device, and an upper end cover and a lower end cover of the energy recovery device are not provided with leakage liquid guide-out channels. The shell, the upper end cover and the lower end cover form a leaked fluid collecting area, the circulating hole is externally connected with a leaked fluid discharging pipe, and a flow meter is arranged on the leaked fluid discharging pipe; the rotating assembly and the non-rotating assembly of the energy recovery device are provided with guide channels, and leaked liquid between the rotating assembly and the non-rotating assembly is guided into the leaked fluid collecting area or guided to the circulating hole. According to the invention, the fault detection problem that the most important fault high-pressure fluid leakage of the energy recovery device is too large can be solved through a low-cost scheme, and the abnormal condition can be accurately detected in real time.
Owner:ZHEJIANG PI ENVIRONMENTAL TECH CO LTD
A fishbone separator for fish food processing
The present application relates to the technical field of fishbone separating device, in particular to a fishbone separating machine for fish food processing, which comprises a base, the upper end of the base is fixedly connected with a processing cylinder, the outer side of the processing cylinder near the upper position is a feeding port, the inner side of the processing cylinder is provided with an extrusion roller shaft, the lower side of the extrusion roller shaft of the processing cylinder is fixedly connected with a filter cartridge, the inner side of the filter cartridge is installed with a separating mechanism for discharging minced meat, the inner side of the separating mechanism is installed with a fishbone removing mechanism for processing fishbone inside the filter hole of the filter cartridge, the hollow shaft and the installation cylinder are axially advanced by cooperating with the material removing assembly, the minced meat inside the filter cartridge can be stably and non-residually pushed outwards, which effectively avoids the decrease of separation efficiency caused by the accumulation of minced meat and the blockage of fishbone; the fishbone, fish skin and other waste materials outside the filter cartridge are synchronously cleaned by the driving arc-shaped scraper, forming a linkage operation mode of synchronous minced meat pushing and fishbone waste discharging.
Owner:WENDENG YAMENG FOOD CO LTD
A delayed start device and pneumatic pressure booster
ActiveCN116771748BFluid-pressure actuator safetyOperating means/releasing devices for valvesProcess engineeringControl valves
The application discloses a delay starting device and a pneumatic supercharger. The delay starting device comprises a pilot control valve, a first pilot gas path and a second pilot gas path. The pilot control valve is connected with the first pilot gas path, the second pilot gas path and a pilot control gas path of a switching valve in the pneumatic supercharger respectively. The first pilot gas path is communicated with an input end of the pneumatic supercharger, and the second pilot gas path is communicated with an output end of the pneumatic supercharger. A valve core of the pilot control valve moves according to a pressure difference between the first pilot gas path and the second pilot gas path, so as to turn on or turn off the pilot control gas path connected with the pilot control valve. The pilot control gas path is used for controlling the switching of the switching valve in the turned-on state, so as to realize the switching of the working position of the switching valve. Through the delay starting device, the high-frequency switching of the pneumatic supercharger in the starting stage can be avoided, the service life of the pneumatic supercharger is improved, useless work of the pneumatic supercharger is reduced, and input flow is saved.
Owner:FESTO (CHINA) PRODUCTION LTD +2
Pressure cylinder type hydraulic system of energy-saving pumping unit
ActiveCN224228969UFluid-pressure actuator testingServomotor componentsHydraulic cylinderHydraulic ram
The utility model relates to the technical field of hydraulic pumping units, in particular to a pressure cylinder type hydraulic system of an energy-saving pumping unit, which comprises an oil tank, a large energy accumulator, a fan and a servo pressure cylinder, the surface of the oil tank is respectively communicated with a liquid supplementing electric pump through a pipeline, the surface of the liquid supplementing electric pump is fixedly connected with a liquid supplementing motor, and the servo pressure cylinder is fixedly connected with the large energy accumulator. A throat hole is formed in the surface of the main electric pump and communicates with a fifth ball valve through a pipeline, and the fifth ball valve communicates with the oil tank through a pipeline. The servo pressure cylinder is utilized to reduce energy consumption, the servo pressure cylinder is controlled to compress hydraulic oil, the hydraulic oil is compressed into the hydraulic oil cylinders, meanwhile, the left hydraulic oil cylinder and the right hydraulic oil cylinder can assist the other hydraulic oil cylinder to ascend under the condition of self weight, and the energy consumption can be saved by more than 30% in the process. The high controllability of the servo motor is utilized to control the rotating speed so as to control the stroke frequency of the hydraulic cylinder of the oil pumping unit.
Owner:XIAN DAUTES OIL & GAS ENG SERVICE CO LTD
Oil pressure and air pressure conversion device of five-axis rotary body
The utility model discloses an oil pressure and air pressure conversion device of a five-axis rotary body, which is applied to the field of industrial automation and comprises a gas-liquid converter body, an output shaft is arranged at the top of the gas-liquid converter body, and a top plate is bolted at the top of the output shaft; by arranging the telescopic cover on the surface of the output shaft and protecting the output shaft, the purpose of a protection function can be achieved, the cleanness of the output shaft is ensured, the service life is prolonged, the clamping head is separated from the clamping hole by rotating the rotating ring, the telescopic cover is taken down, the telescopic cover is convenient to maintain, the practicability is improved, and the service life is prolonged. By means of the mode that the sliding barrel is moved to enable the trapezoidal block to move, the trapezoidal block moves to enable the clamping block to be disengaged from the clamping groove under the action of the third spring, and the connecting pipe is taken down from the connector, the purpose of conveniently assembling and disassembling the pipeline can be achieved, the workload is reduced, and the working efficiency is improved.
Owner:ZHENGYANG EXACTITUDE MASCH & ELECTRICITY SCEN-TECH(HEFEI) CO LTD
Gland and bottom-mold-free bottom mold bottom pressing device
Owner:JIESHENG INTELLIGENT TECH CO LTD
Bottom-mold-free bottom pressing equipment
The invention relates to sole-mold-free sole pressing equipment and belongs to the field of shoemaking, the sole-mold-free sole pressing equipment comprises an upper mold and a lower mold located below the upper mold, a transferring mechanism is arranged beside the upper mold, the transferring mechanism and the upper mold are connected with a transverse moving mechanism, the transverse moving mechanism drives the transferring mechanism and the upper mold to alternately move to the position over the lower mold, and / or the lower mold is connected with the transverse moving mechanism. The lower die is driven by the transverse moving mechanism to alternately move between the position under the transferring mechanism and the position under the upper die. The transfer mechanism is configured to pick up the shoes right above the lower mold, transfer the shoes into the lower mold and take away the shoes subjected to sole pressing in the lower mold; and the upper die comprises a gland. According to the sole-mold-free sole pressing equipment, the transferring mechanism and the transverse moving mechanism are arranged, the transverse moving mechanism is matched with the transferring mechanism to replace manual feeding and discharging operation of shoes, the sole pressing speed is increased, the sole pressing efficiency is improved, and unmanned automatic assembly line type sole pressing operation of the shoes is achieved.
Owner:JIESHENG INTELLIGENT TECH CO LTD
Transfer mechanism and sole pressing machine
The invention relates to a transferring mechanism and a sole pressing machine, and belongs to the field of sole pressing machines, the transferring mechanism comprises a swing arm mechanism and a clamp, the swing arm mechanism comprises a driving part and a rocker arm in transmission connection with the driving part, the rocker arm is hinged to the upper end of the clamp, and the driving part drives the rocker arm to swing to drive the clamp to move around the swing center of the rocker arm; and the upper end and the lower end of the clamp are kept relatively static in the moving process. The transfer mechanism has the advantages that the transfer mechanism can drive the clamp to do curvilinear motion on the vertical plane to transfer shoes from one station to another station, the transfer path is greatly smaller than that of a traditional XYZ three-axis transfer mechanism, the transfer speed is high, consumed time is short, and the transfer efficiency and the production efficiency of the sole pressing machine are effectively improved.
Owner:JIESHENG INTELLIGENT TECH CO LTD
Garbage compression device comprising pressurization loop
A garbage compression device comprising a pressurization loop comprises a compression oil cylinder, a pressurization oil cylinder, an oil tank and a reversing valve. An output cavity and a recovery cavity are formed in the compression oil cylinder, and the pressure in the output cavity and the pressure in the recovery cavity can be adjusted. A pressurization cavity, a small cavity and a large cavity are formed in the pressurization oil cylinder, and the pressure in the pressurization cavity, the small cavity and the large cavity can be adjusted. The oil tank is communicated with the reversing valve, the oil tank is respectively communicated with the recovery cavity and the small cavity through a first oil port of the reversing valve, the oil tank is respectively communicated with the output cavity and the pressurizing cavity through a second oil port of the reversing valve, and the large cavity is communicated with the oil tank through the second oil port of the reversing valve. According to the garbage compression device, through the arrangement of the pressurizing oil cylinder, on the premise that the hydraulic power is not increased, the hydraulic power can be redistributed through pressure increasing and speed reducing, the working condition that the pressure requirement of a system is changed is better adapted, overflow loss of an original system is eliminated, and heating of the system is reduced.
Owner:CHANGSHA PUHUI ENVIRONMENTAL PROTECTION MASCH CO LTD
Pressurizing oil tank for electro-hydrostatic actuator
The invention provides a pressurizing oil tank for an electro-hydrostatic actuator, which is characterized by comprising a shell (1), a piston (2), a spring (3), a spring seat (4), an end cover (6) and a liquid filling tool (10), and the piston (2) divides the pressurizing oil tank into a liquid cavity (8) and a spring cavity (9); the liquid cavity (8) is communicated with a system oil way; the left side and the right side of the spring (3) abut against the piston (2) and the spring seat (4) respectively; the spring seat (4) is arranged on the inner side of the end cover (6), and the end cover (6) is in threaded connection with the shell (1); scale marks (21) are arranged on the piston (2) so as to monitor the liquid level of the oil tank; and the liquid filling volume is controlled by controlling the depth of the liquid filling tool (10) screwed into the shell (1). Through the simple structure, the pressurization and fine adjustment functions of the oil tank are achieved, the liquid filling amount of the oil tank can be accurately controlled, meanwhile, the daily monitoring of the liquid level can be achieved, and the oil tank has the advantages of being simple in structure, low in cost and complete in function.
Owner:SHANGHAI AEROSPACE CONTROL TECH INST
A continuously operating device for a valve-controlled supercharged cylinder of a construction machine
The application discloses a continuous operation device of a valve-controlled supercharged cylinder of an engineering machine, which comprises an operation cylinder, a supercharged cylinder assembly, an operation reversing valve, an oil tank and an oil pump, the supercharged cylinder assembly is connected with the operation cylinder and the operation reversing valve respectively, the operation reversing valve is connected with the oil tank, and the oil pump is connected with the operation reversing valve. When the operation cylinder needs supercharged operation, the operation reversing valve is reversed, so that the oil pump supplies oil to the supercharged cylinder assembly through the operation reversing valve, the supercharged cylinder assembly continuously supercharges the operation cylinder, and the working efficiency is improved; when the operation cylinder needs to change the operation direction, the operation reversing valve is reversed, so that the oil pump directly supplies oil to the operation cylinder through the operation reversing valve.
Owner:SUNWARD INTELLIGENT EQUIP CO LTD +1
Fluid pressure circuit
A fluid pressure circuit in which efficiency of pressure accumulation is high is provided. A fluid pressure circuit 100 includes a plurality of drive portions 5, 6, 7 connected to a single load 4, and an accumulator 10 configured for accumulating pressure. The drive portions 5, 6, 7 include at least one drive portion 7 of which a return flow passage 23-2 branches and is connected to the accumulator 10.
Owner:EAGLE INDS
A transmission and method of operation thereof
The application relates to a transmission and a working method thereof, wherein the transmission comprises a transmission body, a gear shifting mechanism and a gear transmission mechanism arranged on the transmission body, an actuator piston and an actuator piston cavity are arranged in the gear shifting mechanism, a vent hole three is arranged on the actuator piston cavity, and the vent hole three is connected with a gas supercharging valve through a first pipeline. The transmission is reasonable in design, and is beneficial to reducing the manufacturing cost of the transmission and reducing the volume.
Owner:FUJIAN ZHONGQING TRANSMISSION TECH CO LTD
Pressure conversion module, continuous conversion device and hydraulic pump loading test system
ActiveCN116950961BFluid-pressure actuator testingFluid-pressure convertersHydraulic cylinderHydraulic pump
The disclosure provides a pressure conversion module, a continuous conversion device and a hydraulic pump loading test system, wherein the pressure conversion module comprises: a first hydraulic cylinder, a rod cavity liquid inlet end of the first hydraulic cylinder is used for inputting liquid, a rod cavity liquid outlet end of the first hydraulic cylinder and a rodless cavity liquid inlet end of the first hydraulic cylinder are connected with a liquid tank respectively, and a rodless cavity liquid outlet end of the first hydraulic cylinder is used for outputting liquid; a second hydraulic cylinder, a piston rod of the second hydraulic cylinder is connected with a piston rod of the first hydraulic cylinder, a rod cavity liquid inlet end of the second hydraulic cylinder is used for inputting liquid, a rod cavity liquid outlet end of the second hydraulic cylinder, a rodless cavity liquid inlet end of the second hydraulic cylinder and a rodless cavity liquid outlet end of the second hydraulic cylinder are connected with the liquid tank respectively. In the pressure conversion module, the continuous conversion device and the hydraulic pump loading test system, the high pressure test demand of the hydraulic pump is met while ensuring the stable operation of the load, and the power recovery efficiency in the hydraulic pump loading test is effectively improved.
Owner:BEIJING TIANMA INTELLIGENT CONTROL TECHNOLOGY CO LTD +1
Pneumohydraulic pressure intensifier
A pneumohydraulic pressure intensifier includes at least one pneumatic piston that is coupled to a hydraulic pump. The pressure intensifier includes a regulator which allows to set the hydraulic output pressure. The regulator is coupled to a hydraulic pilot control valve which is adapted to interrupt the air supply to the pneumatic piston when a set maximum pressure is reached.
Owner:WSENG
Bidirectional pressurization hydraulic oil cylinder
ActiveCN224187839URapid positioningquick alignmentEngine sealsFluid-pressure convertersRubber ringHydraulic cylinder
The utility model relates to the technical field of hydraulic oil cylinders, and discloses a bidirectional pressurization hydraulic oil cylinder which comprises a base and a hydraulic oil cylinder body arranged at the top end of the base, a first positioning block is fixedly installed on the face, close to the base, of the hydraulic oil cylinder body, and a through groove is formed in the outer wall of the first positioning block. An inserting groove is formed in the outer wall of the hydraulic oil cylinder body, and a fixing piece is fixedly installed on the face, close to the hydraulic oil cylinder body, of the base. According to the bidirectional pressurization hydraulic oil cylinder, through cooperation of the pull rod, the limiting block, the movable groove, the through groove and the limiting groove, rapid limiting of the hydraulic oil cylinder body can be achieved, during use or assembly, the hydraulic oil cylinder body can be conveniently and rapidly disassembled and assembled, practicability is high, and due to the fact that the rubber ring has good sealing performance, the sealing performance is good through the design of the sealing ring; oil in the cylinder barrel can be prevented from leaking out through the connecting position of the first end cover and the cylinder barrel and the connecting position of the second end cover and the cylinder barrel, the overall sealing performance is improved, and through the design of the three sealing rings, the overall sealing performance is further improved.
Owner:MU JU (SHANGHAI) POWER TECH CO LTD
Supercharging device for warm isostatic press
The invention relates to the technical field of supercharging, in particular to a supercharging device for a warm isostatic press. Comprising an oil supply end, an oil outlet end, a pressurization execution unit and a control unit. The pressurization execution unit comprises a pressurization cylinder body, the interior of the pressurization cylinder body is hollow and comprises a piston cavity and a pressurization cavity, a piston is in sliding fit with the interior of the piston cavity, the piston is connected with a plunger in the axis direction, the pressurization cavity is in one-way communication with the downstream of the oil supply end and the upstream of the oil outlet end, and the plunger is matched with the pressurization cavity; the diameter of the plunger is smaller than that of the piston; the piston is provided with a neutral position in the piston cavity, and the piston in the neutral position divides the piston cavity into a first cavity and a second cavity; the first chamber and the second chamber are both connected with the control unit; the control unit comprises a pressurizing driving end; the pressurizing driving end is communicated with the first chamber and the second chamber through a reversing valve; a pressurization regulator is arranged to be matched with the pressurization driving end and used for regulating the outlet pressure of the pressurization driving end.
Owner:SUZHOU JUMIKE INTELLIGENT TECH CO LTD
Position controller
The utility model relates to a position controller, which is used for a pneumatic actuating mechanism to operate a regulating device of process technical equipment, such as a regulating valve, and comprises an electric pneumatic converter, such as a current-pressure converter; a circuit board carrying power supply electronics for the electro-pneumatic converter; a housing comprising at least an electronics compartment, in which at least one electronic component of the position controller, in particular the power supply electronics, is housed, and a converter compartment, in which the electro-pneumatic converter is housed, the electronics compartment and the transducer compartment are spatially separated from each other, the transducer compartment being at least partially delimited by the circuit board.
Owner:SAMSON AG
Hydraulic driving device and control method thereof
The invention relates to the technical field of fluid pressure executing mechanisms, is suitable for high-pressure and large-flow working conditions, and particularly relates to a hydraulic driving device and a control method thereof. The hydraulic driving device comprises a cylinder barrel, a sliding rod, a positioning rod and a piston, an oil cavity is formed in the cylinder barrel, and one end of the sliding rod is arranged in the oil cavity in a sliding mode; the end, located in the oil cavity, of the sliding rod is provided with a concentric hole, one end of the positioning rod is arranged at the bottom of the oil cavity, the other end of the positioning rod is slidably connected into the concentric hole, the piston is annular and coaxially arranged on the peripheral face of the sliding rod, the oil cavity is divided into a barrel cavity and a rod cavity through the piston, and the area above the piston is the rod cavity. According to the hydraulic cylinder, the annular piston is arranged, and the stress area difference value of the piston in the cylinder cavity and the rod cavity is very small, so that compared with the prior art, the driving force difference value of the hydraulic cylinder under the thrust working condition and the tension working condition is reduced, and control over follow-up work is facilitated.
Owner:WUHAN YAOLI ENVIRONMENTAL PROTECTION ENG CO LTD
Self-pressurization oil tank with inhaul cable type pressurization function
The invention belongs to the technical field of hydraulic pressure, and discloses an inhaul cable type pressurization self-pressurization oil tank which comprises a high-pressure cylinder, a high-pressure piston, a tank body and a low-pressure piston, the high-pressure cylinder is arranged on one side of the tank body, a high-pressure medium is arranged in the high-pressure cylinder, a low-pressure medium is arranged in the tank body, and the high-pressure piston can be transversely and movably arranged in the high-pressure cylinder; the low-pressure piston can be transversely and movably arranged in the box body, the high-pressure piston separates cavities in the two sides of the high-pressure cylinder, and the low-pressure piston separates cavities in the two sides of the box body; the ends of one sides of the high-pressure piston and the low-pressure piston are connected through a pulley assembly, and the pulley assembly enables movement of the high-pressure piston or the low-pressure piston to drive the other piston to move. On the premise that the self-pressurization function of oil in the box body can be achieved, the axial length is greatly reduced, oil can be conveniently installed on a plane, meanwhile, parts such as a piston rod are saved, the weight is reduced, and the flight efficiency of the plane is improved.
Owner:JINCHENG NANJING ELECTROMECHANICAL HYDRAULIC PRESSURE ENG RES CENT AVIATION IND OF CHINA