3087 results about "Hydraulic pump" patented technology

1. Name of the designed product: flange. 2. Use of the designed product: used in hydraulic pump or motor of construction machinery, etc. 3. Design points of the designed product: in shape. 4. Picture or photo showing the design points: design 1, perspective view 1. 5. Design 1 is specified as the basic design.

The invention relates to an intelligent oil containment boom mechanical arm device and a control method thereof. The intelligent oil containment boom mechanical arm device comprises a mechanical arm, a hydraulic driving system, a sensing system and a control unit. The mechanical arm comprises a transmission base, a steering stand column, a large arm, a small arm, an overturning head and a tail end grabbing hook assembly. The hydraulic driving system comprises a hydraulic pump station, a proportional reversing electromagnetic valve group and a plurality of execution oil cylinders; the sensing system comprises a gyroscope array and a camera array to form a distributed attitude sensing network and a distributed visual sensing network; the control unit identifies and positions an oil containment boom target based on a sea surface image acquired by the distributed visual perception network, performs motion planning on the mechanical arm, and controls the mechanical arm to move and grab the target; in the target positioning process, posture changes of all parts of the mechanical arm are sensed in real time based on the distributed posture sensing network, and dynamic compensation is conducted on the posture error of the mechanical arm. According to the device, the oil containment boom can be quickly, accurately, reliably and intelligently grabbed, and the laying efficiency and safety of the oil containment boom are improved.

The invention relates to the technical field of data processing, in particular to a PSU pressurization module and a control method thereof, and the PSU pressurization module comprises a data acquisition unit, a dynamic compensation unit, a cooperative control unit, a pressure closed-loop unit and an emergency response unit. The data acquisition unit is used for acquiring an energy accumulator pressure value, an environment temperature value and a braking command signal in real time; the dynamic compensation unit generates a viscosity compensation coefficient through a temperature and viscosity mapping table, and compares the viscosity compensation coefficient with the pressure value to generate a pressure deviation value and a deviation trigger threshold value; the cooperative control unit activates the hydraulic pump based on the pressure deviation value and adjusts the start-stop frequency in combination with the viscosity compensation coefficient; the pressure closed-loop unit adopts double electromagnetic valves to alternately release and supplement oil to inhibit pressure fluctuation; the emergency response unit activates the hydraulic pump and opens the bypass electromagnetic valve to output redundant flow during emergency braking, the technical limitation of an existing hydraulic system in an extreme environment is broken through, and the braking reliability is improved.

A modular electric power take-off (E-PTO) system for a refuse vehicle includes a modular housing. The modular E-PTO also includes a motor, an inverter, a battery, and a hydraulic pump positioned within the modular housing. The modular housing is removably coupled with a front of a waste receptacle or a hopper of the waste receptacle of a refuse vehicle.

The invention provides an intelligent leveling and ground pressure self-adaption system of a modularized movable laboratory, and relates to the technical field of laboratory leveling, the system realizes high-precision leveling through six-degree-of-freedom hydraulic support legs, is equipped with pressure and displacement sensors, and is combined with spherical hinge universal joints to compensate ground inclination. And the reliability and the safety of the system are improved through the backup design of the double hydraulic pumps and the energy accumulator. The system further has a ground pressure self-adaption function, the pressure of the supporting legs is dynamically adjusted based on the ground type and a bearing capacity model, local overload is prevented, and an anti-sedimentation strategy is set. In addition, the system integrates technologies of Beidou / GNSS positioning assistance, multi-modal data fusion, block chain traceability and the like, and the leveling efficiency, stability and traceability are enhanced. The system is suitable for mobile laboratory deployment under complex terrains, and has the characteristics of high efficiency, accuracy and reliability.

A hydraulic system includes a prime mover, a variable displacement first hydraulic pump to be driven by the prime mover to deliver hydraulic fluid, a first hydraulic actuator to be driven by fluid delivered by the first hydraulic pump, a variable displacement second hydraulic pump to be driven by the prime mover to deliver hydraulic fluid, a second hydraulic actuator to be driven by fluid delivered by the second hydraulic pump, and first and second restrictors configured or programmed to restrict an output of the respective first and second hydraulic pumps based on a load on the prime mover. The first restrictor is configured or programmed to change an output restriction of the first hydraulic pump based on priority information about the first and second hydraulic actuators and / or the second restrictor is configured or programmed to change an output restriction of the second hydraulic pump based on the priority information.

The invention relates to the technical field of injection molding machine hydraulic control, in particular to an injection molding machine hydraulic pump control system and a control method thereof, and aims to solve the problems of high energy consumption, high cost or poor temperature control of a traditional hydraulic scheme. The system comprises a hydraulic oil tank, a driving unit and an oil way control module. The driving unit comprises a driving motor, and a fixed displacement pump and a plurality of swash plate type variable displacement piston pumps which are driven by the driving motor, and swash plates of the variable displacement pumps can be switched between negative and positive angles so as to adjust the displacement or actively suck oil; the oil way control module is provided with a flow collecting valve set capable of switching flow collecting / independent states of oil outlet ways of the constant displacement pump and the variable displacement pump, the integrated cooling unit forms an independent cooling filtering loop, the temperature and pressure adjusting assembly is combined with a temperature sensor to control temperature and adjust pressure, and the pressure limiting protection valve set is connected with the constant displacement pump and the variable displacement pump. And the pressure limiting protection valve is matched with a pressure sensor to realize overpressure protection. According to the invention, cost and energy saving are both considered, precise temperature control and pressure protection are realized, and system stability and plastic part forming precision are improved.

An electric drive assembly for operation with a work vehicle component using an SAE standard hydraulic pump / motor mount includes an electric machine with a shaft and a mounting flange. An adapter housing defines an interior space between a component mounting flange and an electric machine mounting flange. The electric machine mounting flange is sized and configured to mate with the electric machine mounting flange. The component mounting flange has a bolt hole pattern and mounting pad that are complementary in size and configuration to those of the SAE standard hydraulic pump / motor mount. A gear set, located at least partially within the interior of the adapter housing, is configured to effect a change in gear ratio and transmit power between the electric machine shaft and a drive shaft.

The invention provides a multi-pump zero-displacement hydraulic agile control system and a control method thereof. The system is composed of a hydraulic system, a mechanical system and an electric control system. According to the control method, a multi-pump zero-displacement switching mechanism and a deep reinforcement learning strategy based on an Actor-Critic architecture are fused, the effective oil supply amount is adjusted by dynamically starting and stopping part of hydraulic pumps, a servo motor rotating speed instruction is output in real time in combination with a neural network, and the strong coupling dynamic relation between sliding block displacement and the angle of a swing rod is coordinated. The system switches part of the pumps to a bypass state when approaching balance so as to reduce energy consumption, and starts all the pumps to guarantee recovery capacity when greatly deviating. According to the technical scheme, on the premise of not depending on an accurate mathematical model, agile, stable and energy-saving control over the inverted pendulum type under-actuated system can be achieved.

The invention relates to the technical field of wind turbine generator maintenance, and discloses a wind turbine generator blade unmanned aerial vehicle deicing assembly and method.The wind turbine generator blade unmanned aerial vehicle deicing assembly comprises an unmanned aerial vehicle, and a laser radar and an installation shell integrating an ultrasonic transducer, a pulse nozzle and a hydraulic pump are installed at the bottom of the unmanned aerial vehicle. The deicing control system obtains focus space coordinates and interface resonance frequency of the blade surface by using a space state sensing module; the stress field focusing module calculates the phase delay amount of the ultrasonic transducer, compensates the pose deviation of the unmanned aerial vehicle by adjusting the emission time sequence, and drives the ultrasonic transducer to generate resonance stress on an ice layer-skin interface; and the sound stream synchronous control module determines a jet flow triggering moment according to synchronous phase locking solution, drives a pulse nozzle at an instantaneous negative pressure phase point of a sound wave period to inject a small amount of deicing fluid into an interface crack, and generates shear stress to induce the interface crack to expand and peel off an ice layer. Accurate throwing of deicing energy is achieved, and the icebreaking efficiency is improved on the premise that the safety of the blade structure is guaranteed.

A hydraulic drive apparatus includes a hydraulic pump that discharges a working fluid; a flow dividing valve that divides a pump passage connected to the hydraulic pump into first and second passages, and changes an opening degree of each passage according to a signal that is input to the flow dividing valve; a travel system hydraulic circuit that is connected to the first passage and controls a flow of the working fluid to a travel motor; a loading system hydraulic circuit that is connected to the second passage and controls a flow of the working fluid to a loading actuator; a pressure sensor that detects a pressure supplied to the travel motor; and a control device that controls, by outputting the signal to the flow dividing valve, the opening degree of the first and second passages according to the pressure detected by the pressure sensor.

The invention belongs to the technical field of aircraft hydraulic pipeline pressure pulsation and vibration suppression design, and particularly relates to an aircraft hydraulic pipeline pressure pulsation and vibration suppression system and a design method thereof.The aircraft hydraulic pipeline pressure pulsation and vibration suppression system comprises a vibration absorber, a pressure accumulator, a rubber single-hole pipe clamp and a metal single-hole pipe clamp; the vibration absorber, the pressure accumulator, the rubber single-hole pipe clamp and the metal single-hole pipe clamp are arranged on the hydraulic pipeline, and the rubber single-hole pipe clamp and the metal single-hole pipe clamp are connected to the machine body structure through the pipeline support. An inlet of the hydraulic pipeline is connected with an outlet of the hydraulic pump, and an outlet of the hydraulic pipeline is connected with an inlet of the hydraulic load. The vibration absorber is arranged at an inlet of the hydraulic pipeline, close to an outlet of the hydraulic pump and located on the upstream of the one-way oil supply valve, and the pressure accumulator is arranged between the high-pressure oil filter and the hydraulic load; a plurality of rubber single-hole pipe clamps and a plurality of metal single-hole pipe clamps are distributed on the hydraulic pipeline.

The invention relates to the technical field of logistics warehouse storage equipment, in particular to a speed reduction control method for a high-speed motor driven hydraulic system, which comprises the following steps: S1, the output torque of a high-speed motor is transmitted to a gear pump through a motor shaft, a planetary reducer and a planet carrier in sequence to drive the gear pump to work; s2, acquiring a three-phase current instantaneous signal and a direct current bus voltage signal, and performing preprocessing and frequency spectrum conversion to determine a current frequency spectrum; s3, in the current frequency spectrum, extracting an energy value in a preset frequency band with the meshing frequency and harmonic waves of the planetary gear as the center, and calculating to obtain a disturbance characterization value of the planetary gear; s4, determining a torque smooth adjustment coefficient according to the planet wheel disturbance characterization value; and S5, dynamically adjusting a dynamic response parameter of a torque control ring of the high-speed motor according to the torque smooth adjustment coefficient. The problems that in the prior art, a high-rotating-speed motor and a hydraulic pump are not matched in rotating speed, and mechanical disturbance is difficult to restrain are solved.

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.

The present invention relates to a six-point truss-type sand pumping and lifting device for a mattress laying vessel. The device comprises a support assembly and six working assemblies. The six working assemblies are all slidably connected to the support assembly. Each working assembly comprises a moving assembly, a sand pumping assembly, and a lifting assembly. The sand pumping assembly and the lifting assembly are both connected to the moving assembly, and thus move and work by means of the moving assembly. The support assembly comprises two main beams. Two ends of each main beam are respectively connected to one main frame support leg. Two auxiliary beams are connected between every left and right main frame support legs. The moving assembly is slidably connected to the two main beams. Each auxiliary beam is connected to a hydraulic pump station, a frequency converter cabinet, and a cab. The present invention minimizes the labor intensity of operators and labor costs, and can effectively improve medium precision control, safety performance, and construction efficiency in the construction process.

An example assembly of an electric power-take off (ePTO) system includes: a housing forming an enclosure therein; an electric motor mounted to the housing inside the enclosure; a motor controller mounted to the housing inside the enclosure; and a hydraulic pump mounted externally to the housing and coupled to the electric.

The invention discloses a hydraulic pump control optimization method and system for rare earth magnetic material extraction, and relates to the technical field of hydraulic pump control, and the method comprises the steps: positioning a plurality of process stages with hydraulic pump services in a rare earth magnetic material extraction system, and directionally associating a plurality of hydraulic association index groups; local control strategy fitting is carried out according to the multiple hydraulic correlation index sets, and multiple initial pump control strategies are output; outputting a plurality of optimized pump control strategies through cross-stage coupling conflict arbitration; after a plurality of optimized pump control strategies are received and adopted, time sequence cooperative control is carried out on the hydraulic pump; and performing closed-loop dynamic updating on control parameters of a plurality of service hydraulic pumps in the rare earth magnetic material extraction system. The technical problem that in the prior art, the extraction stability and efficiency are low due to the fact that the control precision of a hydraulic pump is insufficient in the rare earth magnetic material extraction process is solved, and the technical effects that accurate control over the hydraulic pump in rare earth magnetic material extraction is achieved, and the stability and efficiency of the extraction process are improved are achieved.

The invention relates to a light hydraulic pump fault diagnosis method applicable to all working conditions, and belongs to the technical field of fault diagnosis. The method comprises the steps that a resampling preprocessing technology combining cubic spline interpolation and nearest neighbor interpolation is adopted, unified length transformation is conducted on signals of each circle of a hydraulic pump, and high-frequency and low-frequency feature information of the signals is reserved; designing an order calibrator with global perception capability, wherein the order calibrator is used for stabilizing feature expression after resampling; a multi-cycle component fault feature decoupling module embedded with a prior decomposition factor is constructed, and key component features are extracted; an intrinsic task guiding strategy is provided, and the recognition capability of the model on key fault features is enhanced; interference of working condition characteristics such as rotating speed and pressure is inhibited through a multivariable working condition distribution removal method. The method has the advantages of being small in model parameter, high in calculation speed and the like while achieving full-working-condition high-precision diagnosis, and is suitable for real-time intelligent monitoring of the hydraulic pump in the industrial environment.

A working vehicle includes an electric storage device; a traction motor configured to propel the working vehicle and to generate electrical energy when braking; a hydraulic system including a hydraulic pump driven by a load motor, a hydraulic actuator and a control valve; and a control system. The control system is configured to determine a state of charge of the electric storage device; induce additional load on the hydraulic system by directing the load motor to drive the hydraulic pump and actuating the control valve to direct flow of hydraulic fluid to the hydraulic actuator when the state of charge is at or above a predetermined threshold.

The invention relates to the technical field of oil and gas field development and production, and discloses a rapid detection device and method for oil and gas well tubular column sealing thread damage injection agent repair, and the device comprises a pressurization mechanism, a pressure container and a thread damage assembly; the pressurizing mechanism comprises a liquid supply assembly, a manual hydraulic pump and a pipeline assembly, the liquid supply assembly is installed on the manual hydraulic pump, and the pipeline assembly is installed at the output end of the manual hydraulic pump; the pressure container comprises a sealed container and a piston, the piston is slidably connected to the inner side wall of the sealed container, and the bottom of the sealed container communicates with the pipeline assembly; the thread damage assembly comprises a conduit assembly, a pressure gauge and an external plug; the conduit assembly is communicated with the top of the sealed container; the external plug is in threaded connection with the end, away from the sealed container, of the guide pipe assembly. According to the invention, two states of thread slippage and damage leakage can be simulated, and downhole conduit thread leakage simulation and rapid detection of chemical injection agent repair are realized.

A refuse vehicle includes a vehicle body on a chassis having a frame, an internal combustion engine (ICE), and a transmission coupling the ICE with a plurality of tractive elements. The vehicle body includes an electrically powered body system and a hydraulically powered body system. A first power module is coupled with the ICE and is configured to provide rotary power to a hydraulic pump that is configured to provide hydraulic power to the hydraulically powered body system. A second power module is coupled with the transmission and configured to rotationally couple and decouple an electrical generator with the transmission. The generator is configured to charge at least one battery when rotationally coupled with the transmission. The battery is configured to provide electrical power to the electrically powered body system.

An agricultural crop conditioner comprising: a frame; first and second conditioner rolls with the second conditioner roll being movable towards and away from the first conditioner roll to change a size of a gap between the rolls; a tensioner configured to generate closing force component to bias the second conditioner roll in the closing direction; a conditioner roll drive circuit; and a hydraulic actuator. The conditioner roll drive circuit has a hydraulic pump and motor to drive at least one of the conditioner rolls. The hydraulic actuator is configured to convert pressure from hydraulic fluid in the reverse supply line into an opening force to bias the second conditioner roll away from the first conditioner roll. The opening force is less than the closing force when the pump is operated in a forward direction, and greater than the closing force when the pump is operated in a reverse direction.

The invention discloses an energy-saving servo hydraulic control system, which relates to the technical field of hydraulic control, and comprises a controller used for receiving an external control instruction and outputting an adjusting instruction according to a feedback signal; the servo driving unit receives the adjusting instruction, and a servo driver adjusts the rotating speed and the torque of a servo motor; according to the hydraulic power module, a servo motor drives a variable hydraulic pump to output oil; the hydraulic executing mechanism is used for executing a power output action; the sensing feedback module is used for collecting the position, oil way pressure and execution speed data of the hydraulic execution mechanism; the energy recovery module is used for recovering potential energy and kinetic energy under the braking or descending working condition and converting the potential energy and kinetic energy into hydraulic energy to be stored and reused; and the control valve group is used for accurately controlling the on-off, the flow direction and the flow distribution of the oil liquid. Through flow-pressure on-demand matching and graded energy recovery, the problems that a traditional hydraulic system is large in throttling loss, low in control precision and poor in load adaptability are solved.

The invention discloses an integrated multifunctional hydraulic system which comprises a main hydraulic oil tank and a main hydraulic pump set. Hydraulic oil is stored in the main hydraulic oil tank, the main hydraulic pump set is connected with the main hydraulic oil tank, and the hydraulic oil in the main hydraulic oil tank is conveyed into the system through an oil way to provide hydraulic power. An intelligent pressure compensation device is arranged at the output end of the main hydraulic pump set, and the oil pressure of the system is adjusted in a self-adaptive mode through the intelligent pressure compensation device. The system further comprises an intelligent pressure compensation device and an intelligent control unit, a multi-stage pressure sensor, a pressure adjusting valve and an electric control proportional pressure reducing valve are arranged in the intelligent pressure compensation device, the oil pressure of the system is adjusted in a self-adaptive mode through the intelligent pressure compensation device, and the system is monitored and controlled through the intelligent control unit. An electronic control proportional valve group is arranged at the output end of the oil way, the chassis hydro-pneumatic suspension unit and the loading equipment hydraulic unit are connected through the electronic control proportional valve group, and hydraulic oil is distributed and conveyed into the chassis hydro-pneumatic suspension unit and the loading equipment hydraulic unit.

The invention discloses a hydraulic pump dynamic flow control method and system based on load feedback, and relates to the technical field related to hydraulic pumps, and the method comprises the steps that the load pressure of a hydraulic pump is monitored in real time, a first load pressure signal is generated, and a target flow parameter is set; a load pressure-flow mapping graph is constructed through dynamic mapping; dynamically responding to generate load compensation parameters to carry out load control on load pressure; and deviation calculation is carried out on the target flow parameter based on the second load pressure signal, a flow deviation signal is obtained to carry out dynamic flow control on the hydraulic pump, a flow displacement control result is fed back to carry out real-time correction on the load compensation parameter, and a flow closed-loop backtracking control channel is constructed. The technical problems that in the prior art, the flow control response of the hydraulic pump is lagged under the variable load working condition, the control precision is insufficient, and the energy efficiency is low are solved, and the technical effects that the dynamic response speed, the control precision, the stability and the energy efficiency of flow control of the hydraulic pump are improved are achieved.

The invention discloses a hydraulic pump state monitoring system based on multi-modal information fusion and digital twinning, and particularly relates to the technical field of hydraulic equipment state monitoring. Comprising a hydraulic pump multi-modal data acquisition module, a hydraulic pump multi-modal feature engineering module, a hydraulic pump state hierarchical fusion diagnosis module, a hydraulic pump health state and risk assessment module and a digital twinning and decision support module. The hydraulic pump multi-modal data acquisition module synchronously acquires key operation parameters of a hydraulic pump through a distributed sensor array, and pre-processes the key operation parameters to obtain a hydraulic pump multi-modal parameter set; the hydraulic pump state hierarchical fusion diagnosis module combines the advantages of RF, CNN, LSTM + Attention and other algorithms, a cavitation diagnosis sub-model, a bearing wear diagnosis sub-model and an internal leakage diagnosis sub-model are constructed respectively, diagnosis can be performed for different fault types, and automation and intelligence from feature extraction to fusion diagnosis are realized.

The invention discloses a self-adaptive parameter control system and method for a halfpace field rice transplanter based on full-hydraulic transmission, particularly relates to the technical field of hydraulic parameter control, and aims to solve the technical problem of dynamic power competition between a walking system and a planting device when the full-hydraulic transmission rice transplanter works in a halfpace field. Working pressure signals of a walking motor and a planting device are monitored in real time, the divergence degree of envelope lines of the two pressure signals is calculated so as to recognize the power competition state of a system, and when power competition is detected, the required power of two execution mechanisms is dynamically calculated, and a hydraulic pump displacement distribution coefficient is generated; and then the interaction characteristics of the outlet pressure of the main pump and the output flow signal and the transmission characteristics of the pressure signal of the executing mechanism are fused, the dynamic balance degree of the system is generated, the displacement distribution coefficient is corrected, and finally the opening degree of the walking motor and the proportional valve of the planting device is synchronously adjusted based on the corrected coefficient. Accurate distribution and dynamic balance control of the power of the hydraulic system are achieved.

The application provides a hydraulic control valve test system and method, comprising a hydraulic pump station system for providing hydraulic power during a test process; the hydraulic pump station system comprises an oil tank system, the oil tank system is connected with a first main pump motor set system and a second main pump motor set system in parallel, the first main pump motor set system is used for providing hydraulic power for a first test system, and the second main pump motor set system is used for providing hydraulic power for a second test system; a control pump motor set system is connected to the oil tank system and is used for providing hydraulic power for a third test system; the first test system, the second test system and the third test system are connected with a control valve test bench system used for testing a valve to be tested; the valve to be tested comprises a flow valve, a balance valve, a pressure reducing valve and a relief valve.

The invention provides a control method, device and equipment of an active suspension system, a vehicle and a medium. The method comprises the steps that in the running process of the vehicle, the request acting force of the active suspension system is determined based on a vehicle state signal, and the suspension rigidity force generated by suspension hardware in the active suspension system is determined; and according to the deviation between the request acting force and the suspension rigidity force, target acting force needing to be output by the active suspension system is determined, and according to the target acting force, the rotating speed of a motor used for driving a hydraulic pump in the active suspension system is controlled, and the driving current of an electromagnetic valve used for adjusting the oil flow in a hydraulic cavity of the shock absorber is controlled. According to the method and the device, the motor rotating speed and the electromagnetic valve current are controlled based on the deviation between the request acting force of the active suspension system and the suspension rigidity force determined by the vehicle state signal, so that the actual output force of the active suspension system at each wheel end can be accurately regulated and controlled, and the control stability and the riding comfort of the vehicle under different driving working conditions are improved.

The invention discloses a hydraulic pump fault detection method and device based on information fusion and a medium, and belongs to the technical field of hydraulic device fault detection. The method comprises the steps of collecting a vibration signal and a pressure signal of the hydraulic pump; processing the vibration signal and the pressure signal based on a mathematical morphology filtering algorithm to generate a de-noised vibration signal and a de-noised pressure signal; processing the signals through a convolutional neural network to generate a vibration feature map and a pressure feature map; generating a weighted vibration feature map and a weighted pressure feature map based on an attention mechanism; integrating the weighted vibration feature map and the weighted pressure feature map, and generating a comprehensive fault feature vector; generating normalized comprehensive features based on a normalization algorithm; and processing the normalized comprehensive features through a full connection layer and a Softmax classification layer of the convolutional neural network, and outputting a fault category diagnosis result. By means of the method, the technical effect of improving the accuracy and reliability of fault detection of the hydraulic pump is achieved.