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449 results about "Hydraulic drive system" patented technology
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A hydraulic drive system is a quasi-hydrostatic drive or transmission system that uses pressurized hydraulic fluid to power hydraulic machinery. The term hydrostatic refers to the transfer of energy from pressure differences, not from the kinetic energy of the flow.
Intelligent oil containment boom mechanical arm device and control method thereof
ActiveCN121132609AProgramme-controlled manipulatorGeneral water supply conservationGyroscopeHydraulic pump
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.
Owner:GUANGZHOU COSCO SHIPPING JINGHAI ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD +1
aircraft
The present invention relates to a vertical take-off and landing (VTOL) aircraft featuring a central fuselage and at least two power units. Each power unit is connected to at least two separate lifting rotors via transmission lines, ensuring that each power unit is linked to at least two rotors diametrically opposed relative to the centre of gravity of the aircraft. The lifting rotors might be driven by power transmission lines of hydrostatic type. The power units on either side might be housed in separate pods which might be incorporated into the main fuselage or arranged as separate pods. These separate pods might also function as floats / pontoons for the aircraft to land, take-off and manoeuvre on water.
Owner:SEAHORSE AIR LTD +1
Active control method and device for preventing overturning of single-column pier bridge and medium
The invention discloses an anti-overturning active control method and device for a single-column pier bridge and a medium. The method comprises the steps that a thundersight displacement monitoring system and a hydraulic driving system are deployed; leighting multi-mode fusion data are obtained, and the transverse overturning angle of a beam body is calculated; constructing a digital twinborn body for predicting the overturning state of the bridge structure, and predicting the overturning states of the bridge at multiple moments in the future; and constructing an intelligent agent, and controlling the hydraulic driving system to execute an anti-overturning action based on the predicted bridge overturning state. The device and the medium are both used for implementing the method. The beneficial effects of the invention are that the structure displacement monitoring method based on Reighting heterogeneous fusion is provided for a traditional mode of a single structure displacement detection means, interference factor identification and weighted fusion in different environments are realized, and the reliability of monitored structure displacement data is ensured.
Owner:NINGBO LANGDA ENG TECH CO LTD
Self-adaptive parameter control system and method for halfpace field rice transplanter based on full-hydraulic transmission
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.
Owner:SICHUAN ACADEMY OF AGRICULTURAL MACHINERY SCIENCES +1
A breeding-data fusion platform based on wind power supply and a control method thereof
The application discloses a kind of based on wind power energy's breeding-data fusion platform and its control method, belong to marine engineering equipment technical field.The platform includes SPAR type floating foundation, wind power generation unit, liftable rigid culture net cage, guide mechanism, data equipment cabin, energy storage and control system and mooring system.Guide mechanism includes the vertical guide rail fixed to the outside of main column, the guide unit group with the sliding cooperation of guide rail and replaceable composite gasket.Hydraulic drive system and locking device are arranged between main column and net cage, and hydraulic drive system drives net cage to switch between normal breeding station, maintenance station and anti-taiyin station.Data equipment cabin is used to collect water quality, fish behavior and equipment state data, and energy storage and control system receives wind power and supplies power and outputs control instruction.The application realizes closed-loop control of wind power energy supply and breeding monitoring, improves the guiding reliability of net cage lifting, anti-taiyin ability and maintenance accessibility.
Owner:SUN YAT SEN UNIV
Hydraulic drive device for trough solar concentrator
The utility model relates to a kind of slot type solar concentrator hydraulic drive device, including concentrator push-pull oil cylinder and its hydraulic drive system, the oil tank of hydraulic drive system is connected with energy accumulator, concentrator push-pull oil cylinder by motor and pump group unit, high-pressure pipeline, valve control unit, the oil tank is aluminum alloy die-casting oil tank, the aluminum alloy die-casting oil tank upper along with the platform lower surface is sealed, waterproof, dust cover is installed on platform upper portion, platform one side fixed mounting adapter mounting vertical plate, the both sides of waterproof, dust cover are equipped with quick detach buckle, so the connection between dust cover and oil tank is fixed without bolt connection, just press buckle, dust cover can be locked, greatly reduce the work hour amount of disassembly and assembly, improve installation efficiency, save time cost.The utility model is resistant to-40°C low temperature, waterproof and dustproof performance is high, with good protective performance, easy to repair and maintain, can be stable under harsh environment, high precision and high service life.
Owner:AUMAN NEW ENERGY TECH (TIANJIN) CO LTD
Motor-driven hydrostatic transmission for agricultural work vehicle
An agricultural work vehicle equipped with a hydrostatic transmission (HST) is provided. The agricultural work vehicle may comprise: a hydraulic pump including a pump swash plate and supplying a working fluid according to the angle of the pump swash plate; a swash plate control motor for generating power for adjusting the angle of the pump swash plate; an actuator for operating the swash plate shaft of the pump swash plate by using the power generated by the swash plate control motor; a link unit for transmitting the power generated by the swash plate control motor to the actuator; and a control unit for controlling the rotation of the swash plate control motor on the basis of the manipulation state of an HST manipulation unit.
Owner:LS MTRON LTD
Three-stage variable-cam profile spring hydraulic drive assembly
ActiveCN224300657UAvoid violent collisionsImprove maintenance efficiencyWing openersVibration suppression adjustmentsCircular discControl system
The utility model relates to the technical field of hydraulic transmission parts in ground spring door control system discloses three -segment type variable curvature cam ground spring hydraulic transmission assembly, including the shell, the inside fixed connection of shell has the bearing, the inside fixed connection of bearing has the connecting rod, the outer wall fixed connection of connecting rod has the disc, the inside of shell is provided with resistance assembly, the upper surface of shell is provided with the apron, the inside of apron is provided with screw nail, the lower surface rotation is connected in the inside of shell of disc, the outer wall screw thread connection in the inside of shell of screw nail. In the utility model, in the utility model, through pushing the door and driving the connecting rod rotation, the connecting rod drives disc 4 rotation, disc pushes the gyro wheel rotation, gyro wheel drives the pressure rod and makes second spring contract or release the elastic force, thereby reaches the effect that the curvature of disc 4 gradually changes according to the door body opening angle.
Owner:SHANGHAI PUYU COPPER ART DECORATIVE PROD CO LTD
A hydraulic motor stepless speed regulation control system and method based on eccentricity inverse calculation
The present application belongs to the field of hydraulic transmission and automatic control technology, and discloses a kind of hydraulic motor stepless speed regulation control system and method based on eccentricity inverse calculation.By collecting the angle signal of two swing cylinders, combining the preset geometric position relationship between the center of swing cylinder base and the center of output shaft, the eccentric center position and the actual eccentricity are inversely calculated; the target eccentricity is determined according to the target speed, and the error between the target eccentricity and the actual eccentricity is taken as the control input, the servo valve control quantity is obtained through the PID operation of the controller, the variable executing mechanism is driven to continuously adjust the eccentric mechanism position, so as to realize the continuous change of hydraulic motor displacement and the continuous stepless regulation of speed. The control process can also be combined with zero correction, direction consistency correction, differential filtering, anti-integral saturation, dead zone compensation and output amplitude limiting to improve the speed regulation stability and control accuracy. The present application solves the problems of difficult measurement of internal eccentric mechanism state of hydraulic motor and difficult continuous speed regulation in wide speed range.
Owner:DALIAN UNIV OF TECH
Double-sided boring combined machine tool with self-positioning function
The application relates to the technical field of boring machines, and discloses a double-sided counter-boring combined machine tool with a self-positioning function, which comprises a first track seat and a second track seat arranged at the middle part of the outer side of the first track seat, two groups of first feeding mechanisms are symmetrically arranged above the first track seat, a second feeding mechanism is arranged above the second track seat, and positioning assemblies are arranged on the two sides of the upper end of the second feeding mechanism; through linkage cooperation of the first feeding mechanism, a hydraulic transmission assembly and a spiral guide structure, multiple self-positioning of the axial direction, the radial direction and the forward and reverse rotating direction of a shaft piece can be automatically completed, thereby manual step-by-step adjustment positioning constraint is not needed, multi-dimensional limiting can be synchronously completed through single feeding action, the shaft piece clamping operation process is greatly simplified, the clamping auxiliary time length is shortened, and meanwhile, the synchronous constraint in multiple directions can comprehensively limit various types of movements in the shaft piece machining process, so that machining deviation caused by the fact that clamping positioning is not in place is avoided from the root.
Owner:LIANYUNGANG JIANBO AUTOMATION EQUIP CO LTD
Hydrostatic transmission and methods for braking with it
Hydrostatic transmission for a drive system, comprising a drive shaft (4) of a primary unit (1) that can be coupled to an internal combustion engine of the drive system and a secondary unit (2) that can be coupled to an output of the drive system, wherein the two units (1, 2) are fluidically connected to each other via two working lines (10) of a closed circuit, and wherein the primary unit (1) has an adjustable swivel angle (angle_pump) and an adjustable displacement volume (Vg_pump) that can be controlled by an electrical control unit (8) when the hydrostatic transmission is braked, characterized by a controller (38;138), from which a correction value (Vg_pump_add_incr) for the swivel angle (angle_pump) or the displacement volume (Vg_pump) can be output, wherein the correction value (Vg_pump_add_incr) can be added to a swivel angle (angle_pump_brake) or displacement volume (Vg_pump-brake) pre-controlled by the control unit (8), wherein an input variable of the controller (38; 138) is a speed difference (Δn_eng) between an actual speed (n_eng_act) of the internal combustion engine or a quantity derived therefrom (n_pump_act) and a maximum speed (n_eng_max) of the internal combustion engine or a quantity derived therefrom (n_pump_max).;
Owner:ROBERT BOSCH GMBH
Inclined rail numerical control lathe for flange machining
PendingCN121798373AQuality assuranceavoid deformationOther manufacturing equipments/toolsChucksNumerical controlReducer
The invention discloses an inclined rail numerical control lathe for flange machining, and relates to the technical field of flange machining. The inclined rail numerical control lathe for flange machining comprises a shell, a speed reducer body, a three-jaw chuck, an inclined rail and a sliding saddle, a drill bit is arranged on the sliding saddle, a supporting mechanism used for supporting the end face of the flange is arranged on the side wall of the speed reducer body, the supporting mechanism comprises a supporting plate, and the supporting plate is connected with the side wall of the speed reducer body through a moving mechanism. A receding hole is formed in the side wall of the supporting plate. According to the inclined rail numerical control lathe for flange machining, through the synergistic effect of the supporting mechanism, the hydraulic transmission structure and the pushing mechanism, self-adaptive constant supporting and supporting force dynamic adjustment of the inner side end face during flange machining are achieved, deformation of the flange end face is effectively avoided, and the drilling precision and the machining quality are improved.
Owner:SHENCAI PIAOYI INTELLIGENT ELECTRICAL (JIANGSU) CO LTD
Double push rod hydraulic deviation rectifying device
The application discloses a double-push-rod hydraulic deviation rectifying device, relates to the technical field of conveyor belt deviation rectifying, and comprises mounting plates and mounting racks rotatably connected to the mounting plates, two first mounting pipes are rotatably connected to the two sides in the mounting rack, an adjusting pipe is fixedly connected between the two first mounting pipes, and a deviation rectifying adjusting mechanism is arranged on the adjusting pipe and the mounting rack. The double-push-rod hydraulic deviation rectifying device is fixedly installed on the conveyor through the mounting plates. When the belt on the conveyor deviates, the hydraulic transmission control mechanism is driven to operate, then the hydraulic transmission control mechanism starts the electric hydraulic push rod to operate, the electric hydraulic push rod drives the mounting rack to rotate, thereby driving the belt to move, the belt is inclined to one side, the adjusting roller drives the belt to move, and the belt moves to the middle position of the mounting rack, so that the deviated belt is automatically rectified.
Owner:HUAIBEI HEZHONG MACHINERY EQUIPMENT CO LTD
Digital hydraulic closed pump control system and control method thereof
The embodiment of the application provides a kind of digital hydraulic closed pump control system and its control method, it can be applied to hydraulic transmission and control technical field, the system includes: closed hydraulic circuit, with high-pressure side oil circuit and low-pressure side oil circuit;Digital hydraulic valve group includes cartridge valve between high-pressure side oil circuit and low-pressure side oil circuit, cartridge valve has control cavity, the pressure in control cavity is used to control the conduction state of cartridge valve, multiple high-speed switch valve is connected with the control cavity of cartridge valve, for controlling the pressure of control cavity;Controller is configured to: when the pressure gradient of high-pressure side oil circuit exceeds limit value, multiple high-speed switch valve is output first control signal to drive multiple high-speed switch valve to adjust the pressure in control cavity, to make high-pressure side oil circuit and low-pressure side oil circuit at least partially conductive;When the pressure gradient does not exceed limit value, multiple high-speed switch valve is output second control signal to drive multiple high-speed switch valve to make cartridge valve keep closed state.
Owner:CHINA RAILWAY CONSTR HEAVY IND +1
Self-adjusting arch expanding device based on hydraulic transmission
The invention relates to the technical field of orthodontic appliances, in particular to a self-adjusting arch expander based on hydraulic transmission, which comprises a jaw plate and a tooth sleeve, the tooth sleeve is arranged on the side wall of the jaw plate, a liquid storage bag is arranged in the tooth sleeve, and after the tooth sleeve is worn on a tooth, the liquid storage bag is positioned on a tooth occlusal surface; the jaw plate comprises a first part and a second part which can be far away from each other, a connecting pipe is arranged between the first part and the second part, and two ends of the connecting pipe are respectively arranged in the first part and the second part; a piston is arranged in the connecting pipe and provided with a push rod, the push rod is connected with the first part and the second part, so that when the piston pushes the push rod to move, the first part and the second part are pushed to be away from each other, a one-way valve is arranged in the connecting pipe, and the liquid storage bag is communicated with the one-way valve. According to the occlusal force of a patient, automatic arch expansion is achieved, the size of arch expansion force can be adjusted in a self-adaptive mode according to the size of the occlusal force of the patient, and the effect of improving the comfort and convenience of the patient after wearing is achieved.
Owner:SUZHOU DENTAL DOCTOR DENTAL CLINIC CO LTD +1
Power conversion system for power machines
A power machine can include a power machine frame, an electric power source supported by the power machine frame, an electric motor powered by the electric power source, and a hydrostatic transmission powered by the electric motor. The electric motor can power the hydrostatic transmission via a power transmission assembly that transfers power from the electric motor to the hydrostatic transmission at a reduced rotational speed.
Owner:DOOSAN BOBCAT NORTH AMERICA INC
Self-adjusting expander based on hydraulic transmission
The present application relates to the technical field of oral orthodontic appliances, in particular to a self-adjusting arch expander based on hydraulic transmission, which comprises a jaw plate and a tooth sleeve, the tooth sleeve is arranged on the side wall of the jaw plate, and a liquid storage bag is arranged in the tooth sleeve; after the tooth sleeve is worn on the teeth, the liquid storage bag is on the occlusal surface of the teeth; the jaw plate comprises a first part and a second part which can move away from each other, a connecting pipe is arranged between the first part and the second part, and the two ends of the connecting pipe are arranged in the first part and the second part respectively; a piston is arranged in the connecting pipe, a push rod is arranged on the piston, and the push rod is connected with the first part and the second part, so that when the piston pushes the push rod to move, the first part and the second part are pushed away from each other; a one-way valve is arranged in the connecting pipe, and the liquid storage bag is communicated with the one-way valve. The present application can automatically expand the arch according to the occlusal force of the patient, and can adaptively adjust the size of the arch expansion force according to the size of the occlusal force of the patient, thereby improving the comfort and convenience of the patient after wearing.
Owner:SUZHOU DENTAL DOCTOR DENTAL CLINIC CO LTD +1
Deep well hydraulic transmission variable speed hydraulic generator
The utility model discloses a deep well hydraulic transmission variable speed hydraulic generator which comprises a liquid supply tank, the interior of the liquid supply tank is divided into a salt water cavity and a fresh water cavity through a partition plate, a salt water pump is fixedly connected to the interior of the salt water cavity, and a fresh water pump is fixedly connected to the interior of the fresh water cavity; the water wheel power generation assembly is arranged in the fresh water cavity and used for transmitting the pressurized hydraulic pressure to the roof for power generation; the interior of the circulation box is divided into a water storage pool, a fresh water pool and a salt water pool through a separation frame, the water storage pool is located above the fresh water pool and the salt water pool, and the input end of the fresh water pump is fixedly connected with a fresh water pipe. By utilizing the principles of deep well hydraulic pressure and transmission speed change, static hydraulic pressure is converted into kinetic energy to be supplied to the generator set for power generation, and the kinetic energy is used as reuse water after backflow, so that the utilization efficiency of energy is greatly improved, the whole device is more environment-friendly and energy-saving, and the problems of electricity and water utilization in communities and the like can be solved.
Owner:DONGGUAN HYDRAULIC FUTURE TECHNOLOGY CO LTD
Hydraulic drive system
A hydraulic drive system 24, in particular for a self-propelled construction machine, comprises at least one hydraulic pump (28) driven by a drive unit (26) for conveying hydraulic fluid, a hydraulic circuit (30) receiving hydraulic fluid conveyed by the at least one hydraulic pump (28) and returning hydraulic fluid to the at least one hydraulic pump, at least one hydraulic motor (32, 34) supplied with hydraulic fluid conveyed by the at least one hydraulic pump (28) via the hydraulic circuit (30), a discharge line arrangement (52) for discharging hydraulic fluid from the hydraulic circuit (30) to a hydraulic fluid accumulator (42), and at least one flushing line (64) supplied from the hydraulic circuit (30) for flushing at least one hydraulic component of the hydraulic drive system (40) with hydraulic fluid.wherein at least one flushing line (64) branches off from the discharge line arrangement (52) and / or forms a line section of the discharge line arrangement (52).
Owner:HAMM AG
Hydraulic drive system
This hydraulic drive system includes: a hydraulic pump that supplies a working fluid to a hydraulic actuator; a meter-in control valve that controls a flow rate of the working fluid flowing from the hydraulic pump to the hydraulic actuator; a meter-out control valve that controls a flow rate of the working fluid being drained from the hydraulic actuator into a tank; and a regeneration valve that supplies, to the hydraulic actuator, the working fluid drained from the hydraulic actuator. The meter-out control valve is connected to the hydraulic actuator in parallel with the regeneration valve.
Owner:KAWASAKI JUKOGYO KK
Large hazardous chemical transport vehicle and working method thereof
The invention provides a large hazardous chemical substance transport vehicle and a working method thereof, and relates to the field of large hazardous chemical substance transport vehicles, and adopts the scheme that a tractor is sequentially provided with a first axle, a second axle, a third axle and a fourth axle from front to back, and the third axle and the fourth axle are connected with a frame of the tractor through an air suspension system; the hydraulic driving system is arranged on the tractor, the hydraulic driving system comprises two driving motors, and the driving motors can drive the second axle to rotate; the sensor group is used for collecting a trailer attitude signal and ramp information and transmitting the signals to the central controller; the central controller is configured to judge the vehicle driving working condition based on signals collected by the sensor set and synchronously generate a torque control instruction used for the hydraulic driving system and a height adjusting instruction used for the air suspension system so as to cooperatively adjust the vehicle posture. According to the invention, more comprehensive and timely horizontal control of the cargo platform or the tank body can be realized.
Owner:CHINA NATIONAL HEAVY DUTY TRUCK GROUP JINAN COMMERCIAL VEHICLE CO LTD +1
Double-faced boring combined machine tool with self-positioning function
The invention relates to the technical field of boring machines, and discloses a double-face boring combined machine tool with a self-positioning function, which comprises a first track seat and a second track seat arranged in the middle of the outer side of the first track seat, two groups of first feeding mechanisms are symmetrically arranged above the first track seat, and a second feeding mechanism is arranged above the second track seat. Positioning assemblies are arranged on the two sides of the upper end of the second feeding mechanism. Through linkage cooperation of the first feeding mechanism, the hydraulic transmission assembly and the spiral guide structure, multiple self-positioning in the axial direction, the radial direction and the positive and negative rotation directions of a shaft piece can be automatically completed, positioning constraint does not need to be manually adjusted step by step, multi-dimensional limiting can be synchronously completed through one-time feeding action, and the working efficiency is improved. The shaft part clamping operation process is greatly simplified, the clamping auxiliary time length is shortened, meanwhile, various kinds of movement in the shaft part machining process can be comprehensively limited through multi-direction synchronous constraint, and machining deviation caused by not-in-place clamping and positioning is avoided from the source.
Owner:LIANYUNGANG JIANBO AUTOMATION EQUIP CO LTD
Wire and cable embosser
1. The name of the design product: wire and cable embosser. 2. The use of the design product: for the connection process of copper and aluminum busbar in power engineering, the busbar segment is flattened and patterned by hydraulic drive system. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view. 5. The top view is omitted because the part of the design product is not easy to see or cannot be seen when in use.
Owner:DONGGUAN HAODENXIN PRECISION MACHINERY CO LTD
Method and system for preventing slipping of agricultural work vehicle on slope
Provided is a method for preventing the slipping of an agricultural work vehicle on a slope, comprising: a slope identification step of identifying whether an agricultural work vehicle is on an uphill / downhill slope by measuring an inclination angle of the vehicle; a comparison step of determining whether the magnitude of the measured inclination angle is greater than a predetermined threshold angle; a neutral position identification step of identifying, on the basis of the determination that the magnitude of the measured inclination angle is greater than the predetermined threshold angle, whether a hydro-static transmission (HST) pedal is operated; a slipping-on-slope determination step of measuring a moving speed of the agricultural work vehicle when it is identified that the HST pedal is not operated, and determining, on the basis of the measured moving speed, whether slipping on a slope occurs; a forward / reverse command adjustment step of adjusting a forward / reverse command according to the measured moving speed on the basis of the determination that slipping on the slope occurs; and a power transmission step of transmitting power to wheels of the agricultural work vehicle in the direction opposite to the slipping on the slope by controlling the HST on the basis of the forward / reverse command.
Owner:LS MTRON LTD
Hydraulic drive system
ActiveUS12618419B2Fluid-pressure actuator testingAccumulator installationsHydraulic cylinderCylinder block
The invention relates to a hydraulic drive system, to a method for adjusting a delivery volume in a hydraulic drive system, and to the use of the hydraulic drive system for controlling a hydraulic cylinder. The hydraulic drive system according to the invention is a hydraulic drive system with a first hydraulic machine and a second hydraulic machine which are connected mechanically to one another. The first hydraulic machine and the second hydraulic machine are operated jointly by a variable-speed drive. The first hydraulic machine and the second hydraulic machine are connected hydraulically to at least one first hydraulic cylinder, comprising a first hydraulic cylinder surface and a second hydraulic cylinder surface. The first hydraulic machine and / or the second hydraulic machine have / has an adjustable delivery volume.
Owner:VOITH PATENT GMBH
Hydraulic drive system
PendingUS20260177083A1Servomotor componentsFluid-pressure actuator componentsLine tubingHydraulic pump
A hydraulic drive system 24, in particular for a self-propelled construction machine, comprises at least one hydraulic pump (28) drivable by a drive unit (26) for conveying hydraulic fluid, a hydraulic circuit (30) receiving hydraulic fluid conveyed by the at least one hydraulic pump (28) and returning hydraulic fluid to the at least one hydraulic pump, at least one hydraulic motor (32, 34) supplied via the hydraulic circuit (30) with hydraulic fluid conveyed by the at least one hydraulic pump (28), a discharge line arrangement (52) for discharging hydraulic fluid from the hydraulic circuit (30) to a hydraulic fluid reservoir (42), at least one flushing line (64) supplied from the hydraulic circuit (30) for flushing at least one hydraulic component of the hydraulic drive system (40) with hydraulic fluid, wherein at least one flushing line (64) branches off from the discharge line arrangement (52) and / or forms a line region of the discharge line arrangement (52).
Owner:HAMM AG
A built-in power device, dexterous finger and application thereof
This invention, entitled "An Built-in Power Device, a Dexterous Finger, and Its Applications," belongs to the field of robotic dexterous hand technology. The technical problems it aims to solve are: existing robotic dexterous fingers suffer from problems such as external power devices, complex structures, large size, low power density and slow response due to the need for reducers in motor drives, poor stiffness and easy wear of tendon-wire transmissions, large return gaps, unstable positioning and grasping, and difficulty in directly and effectively driving joint rotation through the micro-displacement of piezoelectric ceramics. The key technical solution is: a built-in power device consisting of a piezoelectric ceramic power system and a hydraulic transmission system. The piezoelectric ceramic utilizes its inverse effect to achieve direct electro-mechanical conversion, providing mechanical power to the hydraulic transmission system. The hydraulic pump in the hydraulic transmission system is a reciprocating positive displacement pump, which provides pressurized oil to the hydraulic circuit through the periodic change of the working chamber volume.
Owner:李伟海
A soft rock roadway supporting device and a construction method
Owner:鄂尔多斯市金通矿业有限公司 +1
Full-electric-drive type embedded scraper ship unloader
The invention belongs to the technical field of port machinery, and particularly relates to a full-electric-drive type embedded scraper ship unloader. Comprising a portal crane, a rotary table, an arm frame steel structure, a winch type arm frame pitching mechanism, an electric transmission vertical embedded scraper elevator, a winch type vertical scraper swing mechanism, an electric transmission arm frame embedded scraper conveyor, a central blanking chute and an electric transmission portal frame embedded scraper conveyor, the winch type cantilever crane pitching mechanism comprises a pitching driving device, a pitching fixed pulley block and a pitching movable pulley block, the pitching driving device winds the pitching steel wire rope winding mechanism to enable the front section of the cantilever crane steel structure to be lifted up, and the winch type vertical scraper swing mechanism comprises a reset spring mechanism; the reset spring mechanism acts on the front section of the cantilever crane steel structure so that the lower section of the electric transmission vertical embedded scraper elevator can swing backwards. The ship unloader solves the technical problems of high requirements on operation and maintenance personnel, high cost and high energy consumption caused by hydraulic transmission of the ship unloader in the prior art.
Owner:JIANGSU GUOLIANG STORAGE ENG CO LTD
Detachable intelligent detection supporting rod piece with adjustable length
The invention discloses a detachable length-adjustable intelligent detection supporting rod piece, and belongs to the technical field of intelligent monitoring supporting rod pieces. The detachable length-adjustable intelligent detection supporting rod piece comprises a fixing mechanism, a hydraulic transmission mechanism and an angle adjusting mechanism; the fixing mechanism is detachably installed at the end of the H-shaped steel, the hydraulic transmission mechanism is connected to the other end of the fixing mechanism, and the angle adjusting mechanism is movably connected to the end of the hydraulic transmission mechanism. The problems that a traditional steel support needs to be additionally provided with a jack, the length of the steel support cannot be adjusted, the turnover rate is low, and secondary seam filling is needed at the joint of the steel support and a crown beam are solved, the H-shaped steel fixing plate and the hydraulic fixing plate are connected through high-strength bolts, and the steel support is convenient to disassemble and has good rigidity and stability; and the device can be matched with H-shaped steel of different sizes and can be suitable for foundation pits of different sizes, and the repeated utilization rate is greatly increased.
Owner:CHINA MCC17 GRP CO LTD