52results about How to "Full power utilization" patented technology

The invention relates to a pipeline cleaning robot applied to industrial field, and also relates to a method for controlling the walking robot. The robot comprises a connection shaft (2), a supporting leg (3), a drive plate (4), a pusher dog (5), a connection rope (8), a variable pitch motor (9), a drive motor (10), a cleaning device (12) and a roller wheel device (14), wherein the connection rope (8) passes through the drive plate (4), and is connected with variable pitch motor (9); the supporting leg (3) which can retractably rotate is connected with the drive plate (4); the drive motor (10) is connected with another frame shell end part (18) through a gear disc (17) and the connection shaft (2); the supporting leg extends out of a frame shell (13), and is contacted with the inner surface of the pipeline; and the cleaning device (12) is arranged on the frame shell (13). With the scheme, the robot is more efficient, can turn a curve smoothly, can be controlled more easily, has the advantages of simple structure and convenient manufacture, and is applicable to pipelines with different diameters.

The invention discloses a reactive-power control method of a wind power field, which is suitable for performing reactive-power coordinated control on a wind power field variable-speed constant-frequency wind power generating set and a reactive-power compensation device. The control method comprises the steps that: reactive-power requirements of the wind power field are calculated, and a correspondent allocation method is adopted according to the valid reactive-power power capacities of the reactive-power compensation device and the wind power generating set. Due to the adoption of the controlmethod, the reactive-power power adjusting capacity of the variable-speed constant-frequency wind power generating set can be adequately played, the coordinated control of multiple reactive power sources can be realized, and the oscillation situation caused by the adjustment can be avoided. When an electric power system has malfunctions, the reactive power adjustment is locked, so the system over-voltage caused by the excessive reactive power of the system after the malfunction is removed can be prevented. When the reactive power capacity of the wind power field is insufficient to maintain the voltage of an interconnected point, a prompting signal is transmitted, the active power of the wind power field is limited, and the coordination of the active power and the reactive power can be realized.

The invention discloses an energy-saving system for power matching between an engine and a hydraulic pump. The energy-saving system comprises a pressure sensor, an electronic load controller, an energy-saving controller, an accelerator potentiometer, an optical-electricity encoder, an actuating mechanism, a proportional electromagnetic valve, a pressure relay, an engine oil pump, the engine, a variable pump, a variable mechanism and an oil tank, wherein the oil tank is respectively connected with the engine oil pump and the variable pump, the engine oil pump is respectively connected with the accelerator potentiometer and the engine, and the engine is coaxially connected with the variable pump and is used for driving the variable pump to operate; the optical-electricity encoder is arranged on the engine; the variable pump is synchronously connected with the actuating mechanism, the pressure relay and the variable mechanism, and the proportional electromagnetic valve is arranged on the variable mechanism; the accelerator potentiometer and the proportional electromagnetic valve are respectively and electrically connected with the energy-saving controller; the optical-electricity encoder and the pressure relay are respectively connected with the electronic load controller, and the electronic load controller is connected with the pressure sensor; the variable mechanism is used for controlling the rotating speed of the variable pump.

The invention provides a multifunctional flaw detection vehicle for a highland railway steel rail. The multifunctional flaw detection vehicle for the highland railway steel rail comprises a tractor and a detection vehicle; the rear end of the tractor is connected with one end of the detection vehicle to drive the detection vehicle to move; a steel rail flaw detection device is installed on a front steering frame of the detection vehicle and a steel rail contour detection device is installed on a rear steering frame; a rail state routing inspection device is installed below the rear end frame of the detection vehicle; a vehicle set is assembled with advanced train control and communication equipment such as an ITCS and an INMARSAT telephone and successfully introduces the aviation oxygen generator technology. The multifunctional flaw detection vehicle for the highland railway steel rail has the advantages of being simple, reasonable and practical in structure, comprehensive in function, satisfying detection requirements for railway rail ultrasonic detection, a steel rail contour, the steel rail abrasion, the rail cant, a steel rail surface and lateral side and the fastener loss, being good in integral operation stability and satisfying the requirement for the highest continuous operation speed per hour of 80 kilometer per hour of the ultrasonic flaw detection flat rail under the highland environment.

The invention discloses a dual-motor synchronous-driving steering actuator of an automobile steer-by-wire system. The dual-motor synchronous-driving steering actuator aims at improving the steering actuating response characteristics and life of the steer-by-wire system and the structural redundancy safety and structural compactness of a steering actuating system. The dual-motor synchronous-driving steering actuator comprises two same steering motors, two same worm-gear reducer assemblies, torque angle sensors and a rack and pinion steering gear assembly. According to the dual-motor synchronous-driving steering actuator, the dual motors and the worm-gear reducer assemblies which are reversely and symmetrically arranged are adopted, the two steering motors and worm-gear reducers assembled with the steering motors are meshed with racks of rack and pinion steering gears, and the torque angle sensors are embedded into the worm-gear reducer assemblies.

The present invention relates to current association and unloading control method for multiple-pump hydraulic system, especially for loading machine and other heavy mechanical apparatus. The present invention uses hydraulically controlled change valve as current associating and unloading control element for multiple-pump hydraulic system, unlike available systems, which has unloading valve. Thus,the current associating and shutting of the pumps may be controlled at will to lower the power consumption and heat producing amount, raise the reliability of element and system and lower cost.

The invention discloses a power-operated tail-sitting type mixed layout vertical take-off and landing aircraft. The power-operated tail-sitting type mixed layout vertical take-off and landing aircraft is composed of a fuselage, airfoils, motors, propellers and landing gears; the fuselage axis coincides with the OX axis of a body axial system, the projections of the fuselage axis and the OX axis in an XOY plane of the body axial system are distributed in an X shape; each airfoil on the fuselage is divided into several sections, sweepback angles and dihedral angles of all the sections are different from one another, and excellent pneumatic performance and maneuvering performance are achieved through positively-curved airfoil profiles and negatively-curved airfoil profiles; four sets of propeller-motor power systems are installed on the four airfoils correspondingly, and the distances between the positions where the propeller-motor power systems are located and the OX axis of the body axial system are the same; and four power devices take off in an X-shaped quad-rotor mode in the vertical take-off and landing processes and complete conversion operation to enter a cruising state through different tensile forces of the motors or by being matched with maneuvering surfaces, and required maneuvering is completed through tensile force changing of the motors in the whole process. The power devices of the aircraft are simple, the control mode is reliable, propeller slipstreams can be effectively utilized, and the aircraft is suitable for serving as flying platforms of a tail-sitting type vertical take-off and landing unmanned aerial vehicle.

The present invention relates to a node (1) in a wireless communication system, the node (1) comprising at least one antenna (2) which comprises an even number (A) of antenna ports (3, 4, 5, 6), at least four, where each antenna port (3, 4, 5, 6) is associated with a corresponding polarization (P1, P2), beam-width and phase center. The antenna ports (3, 4, 5, 6) are connected to a reconfiguration network (7) which is arranged for pair-wise linear combination of antenna ports (3, 4, 5, 6) of mutually orthogonal polarizations to a number (B) of virtual antenna ports (8, 9), which number (B) is equal to half the number (A) of antenna ports (3, 4, 5, 6). The virtual antenna ports (8, 9) correspond to virtual antennas and are connected to corresponding radio branches (10, 11). The present invention also relates to a corresponding method.

The present invention discloses a frequency conversion controlling method of natural gas automobile parent gas adding primary station compressor unit, wherein the compressor unit includes a primary station compressor, a asynchronous motor supplied with variable frequency, a transducer, a superior control computer, and cylinder inside the station; the frequency conversion compressor unit control and change rotate speed of the primary station compressor unit at real time according to variation of cistern car pressure under superior control computer command: when the cistern car pressure is low, constant rotate speed runs; when the cistern car pressure high, constant power runs. The present invention can improve average gas adding speed of the primary station, increase daily gas supply, improve economical efficiency of current primary station compressor unit, meanwhile, because the rotate speed is improved, unit power can be utilized relatively great, electric motor efficiency is improved, attrition reduced, and power consumption of unit aerogenesis of the unit decreased with significant energy-saving effect.

The invention belongs to the technical field of power system frequency control, and relates to an energy storage system operation method for frequency modulation participated by shared energy storage of a new energy power plant. The method comprises the following steps: establishing a target function considering the electricity purchasing and selling cost of the energy storage system, the secondary frequency modulation income, the life loss and the deviation electric quantity penalty; determining decision variables and constraint conditions of the optimization model, wherein the constraint conditions comprise energy constraint, power constraint, electric quantity constraint and the like, and the service life, the electric quantity level, frequency modulation performance and the like of the energy storage system are comprehensively considered; and converting the optimization model into a mixed integer linear programming problem, wherein mature optimization software is used for solving, and a comprehensive optimal strategy of the current secondary frequency modulation capacity and reference power declaration is obtained. The method particularly considers that the shared energy storage undertakes the primary frequency modulation obligation of the new energy station, and makes full use of the self-regulation capability to provide the secondary frequency modulation service so as to obtain benefits.

The invention discloses a stair climbing device. The device comprises a chassis, a running wheel, a stair climbing wheel, a push-pull mechanism with two ends respectively hinged at the chassis and theslewing frame and a driving mechanism, a first end of the chassis is hingedly provided with a slewing frame, a hinge shaft is horizontal and perpendicular to the moving direction of a stair climbingdevice body, the movable end of the driving mechanism is connected to the running wheel, the driving mechanism is in one-to-one correspondence with the running wheel, and the running wheel and the stair climbing wheel are driven by a drive mechanism; the running wheel is installed on the slewing frame, the stair climbing wheel is mounted on the chassis, or the running wheel and the stair climbingwheel are all mounted on the slewing frame, or the running wheel is mounted on the chassis, and the stair climbing wheel is mounted on the slewing frame; under the push-pull action of the push-pull mechanism, the slewing frame swings, and the alternate landing of the running wheel and the stair climbing wheel can be achieved; a rotating wheel is further included, and a rotating shaft of the rotating wheel is parallel to the hinge shaft of the slewing frame. The device has the advantages that the structure and the principle are simpler, and the movement is flexible and reliable.

The invention relates to the field of road drainage and filtration, in particular to a drainage system for sponge city construction. A drainage cylinder guides water flow to flow from top to bottom; a filter screen disc is installed at the water inlet end of the drainage cylinder and blocks garbage to enable the water flow to pass through; a mounting shaft of a pollution discharge fan is rotatably inserted in the axis of the filter screen disc, the lower end of each pollution discharge blade is attached to the bottom face of the filter screen disc to ensure that the garbage blocking filter holes can be discharged out of the filter screen disc in the rotating process, and the pollution discharge blades are arranged to have buoyancy at least overcoming the impact force of the water flow on the pollution discharge blades in the water flow; the pollution discharge blades have the buoyancy in the water flow through the structure of the pollution discharge blades or the external structure, and the buoyancy at least overcomes the impact force of the water flow passing through the pollution discharge blades from top to bottom; a power impeller is arranged in the drainage cylinder, the bottom of the power impeller is rotatably installed on a support, and the power impeller is configured to rotate under driving of the water flow; and the power impeller drives the mounting shaft to rotate through a transmission mechanism. The effect of dredging a drainage pipe is achieved.

The invention relates to a combined generator which comprises a generator body. The generator body comprises a shell, a bearing set, rotors, stators, collecting rings and a terminal. The shell is of a barrel-shaped structure with openings in the two ends. The bearing set is arranged on the inner walls of the two open ends. The rotors are sleeved with the shell of the barrel-shaped structure, and the two ends of each rotor are rotatably connected with the bearing set. Hollow cylindrical channels are formed in the rotors in the direction of the center axes, and the two open ends of each channel serve as an air inlet and an air outlet of the generator body respectively. Guiding portions are arranged on the inner walls of the channels, and insulation layers are arranged on the inner walls of the channels and the guiding portions. The stators are connected to the outsides of the rotors in a sleeving mode, and the stators are not in contact with the rotors. The collecting rings are used for providing exciting current for the rotors. The terminal is connected with the stators and used for outputting current generated by power generation. The channels are formed in the direction of the center axes of the rotors, a water turbine / turbine and a generator are combined, the structure is compact, and power of water / steam is fully utilized.

The invention relates to a full-hydraulic digitized synergetic linkage control pipe lifting machine, and provides a full-hydraulic digitized synergetic linkage control pipe lifting machine with advantages of high work precision, excellent work performance, low energy consumption, strong operability and high safety. The full-hydraulic digitized synergetic linkage control pipe lifting machine comprises a wireless communication module and an electric-hydraulic control system, wherein the plurality of the pipe lifting machines communicate through the wireless communication module, and the electric-hydraulic control system comprises a DSP controller, a closed walking system, an opened working system, and a fan cooling and accumulator liquid filling system. With the full-hydraulic digitized synergetic linkage control pipe lifting machine of the present invention, the working condition of the pipe lifting machine can be real-timely monitored, the host machine anti-tipping alarm function is provided, the counterweight opening angle can be automatically matched so as to achieve the optimal dynamic balance state, and the operation has the excellent micro-mobility through the high precision electric proportional signal; and with the wireless communication module, the synergetic linkage action of the multiple machines can be achieved.

The invention discloses a double crank shaft horizontal combustion engine with a bidirectional piston cylinder, which comprises an engine body (1), a starting device, a lubricating system, a fuel supply system, a cooling system, a plurality of cylinder bodies (2) and crank shafts (3), wherein two mutually symmetrical pistons (5) are arranged inside the cylinder body (2) and fixed on a piston rod (6), the piston rod (6) is fixed on a connecting rod (7) and can indirectly drive the crank shafts (3) to rotate, a combustion chamber (4) is positioned between the two pistons (5), and the combustion chamber (5) can simultaneously push the two pistons (3) to rotate when working. The invention reduces the fuel consumption by fully utilizing energy conversion power generated by the combustion of the fuel in the combustion engine, can be used as a petrol engine, a diesel engine or a combustible gas engine, has wide application range, and can simplify cylinder body units in a multi-cylinder combustion engine after a double-piston cylinder body is assembled, thereby reducing the volume, having simple structure and being easy to popularize.

The invention relates to the technical field of agricultural machinery, and discloses an agricultural power-saving efficient combined subsoiling plough which comprises a top plate. A power mechanism is fixedly mounted at the top of the top plate, the power mechanism comprises a motor, the output end of the motor is fixedly connected with a rotating shaft through a coupler, and the outer wall of the rotating shaft is sleeved with a rotating wheel; and one side of the rotating wheel is fixedly connected with an eccentric plate, and the outer wall of the rotating wheel is movably connected with abelt. According to the agricultural power-saving efficient combined subsoiling plough, when soil deep ploughing work is carried out, only the whole subsoiling plough needs to be connected to an agricultural traction machine through a connecting mechanism, then the rotating shaft and the rotating wheel can be driven to rotate through power sources of the motor or the agricultural traction machine,the belt can be driven to pull the driven wheel to rotate, and a first driven shaft and opening pieces arranged on the outer wall of the first driven shaft are driven to rotate to open the soil; andthe transmission manner is simple, and the maintenance work is more convenient.

The invention belongs to the technical field of power transmission and particularly relates to a double-differential electromechanical compound transmission device. The double-differential electromechanical compound transmission device for a crawler vehicle has the technical scheme that the double-differential electromechanical compound transmission device mainly consists of two driving motors, two sets of three-gear planetary speed change mechanisms, a left confluence planetary bar, a right confluence planetary bar, two zero shafts, four pairs of connecting gears, two sets of speed reducing planetary bars, two sets of main brakes and two sets of lateral speed reducing mechanisms, wherein the two zero shafts are connected with the left confluence planetary bar and the right confluence planetary bar. The double-differential electromechanical compound transmission device has the advantages that the mode of the two driving motors is only adopted, two confluence planetary bars are arranged, two differentials are connected through two zero shafts similar to the double-power flow driving mode, the problem of backflow power transfer from an inner side crawler belt to an outer side crawler belt of the double-motor independent driving is solved, the power grade of the driving motors is effectively reduced, the driving motors can realize the straight running and steering functions, the functions of stepless driving, stepless steering, zero position steering and the like are realized, and the volume power density of the transmission device can be improved.

The invention discloses a conveyor convenient to disassembly. The conveyor comprises a base, a main conveyor belt, two auxiliary conveyor belts and landing legs; a conveyor motor of the conveyor and afirst rotary disc are in transmission connection though a conveyor belt, a first rotating shaft and the first rotary disc, and the first rotary disc drives the main conveyor belt to rotate; in addition, the first rotary disc and a third rotary disc are cooperatively connected, the third rotary disc is used for driving the auxiliary conveyor belts to rotate, a second rotating shaft connected to the third rotary disc is arranged on a second support plate, and a slide cavity of the second support plate is internally provided with a slidable slide plate and third side support bars; disassemblingand separation of the auxiliary conveyer belts from the main conveyer belt are achieved through the slidable slide plate and the third side support bars, the auxiliary conveyer belts are supported bythe landing legs, hinge seats of the landing legs are hinged to second side support rods, the landing legs are provided with telescopic rods to facilitate contraction, the auxiliary conveyor belts areconveniently disassembled, and the working state of the conveyor can be adjusted according to the conveying amount of materials; and in addition, the occupied space after disassembly is reduced, andmovement is facilitated.

The invention relates to the technical field of electric heating devices, and discloses an electric heating device. The electric heating device comprises a main body; the main body is provided with afirst end and a second end, and a plurality of heating pieces are arranged between the first end and the second end at intervals; one side, away from the main body, of the first end and / or the secondend is provided with protection piece; the protection piece is provided with a first cavity; and the protection piece is coated on the heating pieces at the first end and / or the second end. Compared with the prior art, the electric heating device has the advantages that the heating efficiency can be obviously improved, meanwhile, the safety problems of scalding and the like caused by mistakenly touching the outer side heating pieces under the heating condition are avoided, and the safety of a user during use of an electric heating product is improved.

The invention discloses a reactive-power control method of a wind power field, which is suitable for performing reactive-power coordinated control on a wind power field variable-speed constant-frequency wind power generating set and a reactive-power compensation device. The control method comprises the steps that: reactive-power requirements of the wind power field are calculated, and a correspondent allocation method is adopted according to the valid reactive-power power capacities of the reactive-power compensation device and the wind power generating set. Due to the adoption of the control method, the reactive-power power adjusting capacity of the variable-speed constant-frequency wind power generating set can be adequately played, the coordinated control of multiple reactive power sources can be realized, and the oscillation situation caused by the adjustment can be avoided. When an electric power system has malfunctions, the reactive power adjustment is locked, so the system over-voltage caused by the excessive reactive power of the system after the malfunction is removed can be prevented. When the reactive power capacity of the wind power field is insufficient to maintain the voltage of an interconnected point, a prompting signal is transmitted, the active power of the wind power field is limited, and the coordination of the active power and the reactive power can be realized.

The invention discloses an environment-friendly papermaking process which comprises the following steps: S1, uniform mixing: injecting paper pulp and mixed water into a sedimentation tank, loosening a vertical round rod, so as to insert the vertical round rod into the paper pulp, and uniformly mixing the paper pulp when the vertical round rod moves forwards along with a guide block, so as to enable printing ink and particle impurities to be capable of normally floating and sinking; and S2, separation: retightening the vertical round rod at the top of the vertical rod. According to the invention, a hydraulic telescopic rod is used for driving a connecting plate and a paper pulp filtering plate to descend, so that the ink filtering plate descends to the position below the liquid level, meanwhile, a driving motor drives a lead screw to rotate, a guide block moves forwards along with a moving block, a printing ink filter plate can filter and remove floating printing ink and grease substances generated when waste paper pulp is soaked, and the paper pulp pressing inclined plate can press the paper pulp floating on the surface downwards when moving forwards, so that the paper pulp cannot be adhered to the printing ink filter plate, and soaking water can smoothly penetrate through the water permeable holes.

The invention discloses a small-size four-wheel drive stepless speed change loader, belonging to loaders. The structure of the stepless speed change loader comprises a frame assembly, a power system, a cab assembly, a working device assembly, a hydraulic system and an electrical system, wherein, the cab assembly is installed at the middle part of the frame assembly; the power system is installed under the cab assembly; the working device assembly is installed at the front side of the frame assembly; the hydraulic system and the electrical system are installed on the working device assembly; the power system comprises an engine, a gear oil pump and a gearbox, a drive gear is arranged on the engine, the gearbox is connected with a driven gear, and the drive gear is connected with the driven gear by a gear shift wide V band; and the engine is connected with the gear oil pump by an oil pump drive shaft. Compared with the prior art, the small-size four-wheel drive stepless speed change loader of the invention has the characteristics of reasonable design, simple structure, easy use and the like, thereby effectively simplifying operations and improving work efficiency.

The invention discloses a sludge pre-drying carbonization treatment method, relates to the technical field of sludge treatment, solves the problem that the existing sludge drying carbonization method lacks a dialysis and removal structure for moisture in the sludge, and the moisture stored in the sludge Difficulty in discharging can only rely on heating and evaporation, resulting in a longer evaporation and drying process of water, which reduces the problem of drying efficiency. The sludge pre-drying carbonization treatment method is completed by the sludge pre-drying carbonization treatment equipment, and then realizes the sludge pre-drying carbonization treatment, which includes the following steps: firstly, the insertion block is inserted through the sliding plate through the electric push rod Block the rear opening of the drying box, and then fill the sludge into the drying box. After the filling is completed, continue to slide down the electric push rod to insert the stopper and make the left and right rows of positioning square rods push down against the drying box. On the bottom inner wall of the box, then start the motor and open the solenoid valve on the air distribution pipe to ignite.

The invention discloses a rotary spreading device of a suspension system for cultivating edible fungus, and the device comprises an upper guide rail and a lower guide rail; a support is arranged between the upper guide rail and the lower guide rail; an eccentric mechanism is arranged on the support; the eccentric mechanism comprises a sprocket and an eccentric wheel; the sprocket and the eccentric wheel share a same rotary shaft; a couple hole and a shifting block groove are arranged in the eccentric wheel; the center of gravity of the eccentric wheel and the center of the couple hole are arranged on both sides of the centerline of the rotary shaft of the eccentric wheel; the center of gravity of the eccentric wheel, the center of the couple hole and the centerline of the rotary shaft of the eccentric wheel are arranged in a same plane; and a shifting block mechanism is connected onto the shifting block groove of the eccentric mechanism. The rotary spreading device of the suspension system for cultivating edible fungus has the advantages of simple structure, reasonable design, low cost, small vibration when materials are transferred, low danger coefficient and long service life, meanwhile power can be saved due to the design structure of the eccentric wheel when the device is used, rotary motion can be converted into other movement forms, so that the transmission efficiency is improved, the power is fully utilized, and the popularization and use are convenient.

For settling a problem of homogenizing VISAR probe light illumination, the invention provides a probe light homogenizing system of a random reflection surface speed interferometer. The probe light homogenizing system comprises fiber output laser, a collimating lens and a beam compressing mirror. The collimating lens is arranged in the output optical path of the fiber output laser. Furthermore the focal plane of the collimating lens is arranged at the optical fiber end surface of the fiber output laser. The beam compressing mirror comprises a beam compressing mirror front set and a beam compressing mirror back set. The beam compressing mirror front set is arranged in an output optical path of the collimating lens. The beam compressing mirror back set is arranged in an output optical path of the beam compressing mirror front set. Furthermore the focal plane of the beam compressing mirror front set is superposed with the focal plane of the beam compressing mirror back set, thereby forming a Kepler telescope structure. The fiber core diameter D0 of the fiber end surface, the focal length f1 of the collimating lens, the focal length f2 of the beam compressing mirror front set, and the focal length f3 of the beam compressing mirror back set satisfy a relationship which is shown in the description, wherein alpha is an emergent half-angle of the emergent light beam of the fiber end surface, and furthermore f2>f1>5mm.

The invention discloses a fast asynchronous positioning device for a large-angle laser target, which includes a servo tracking mechanism, a laser detection group, a beacon laser emission group, a laser cube mirror and a processing circuit group, and the processing circuit group provides the laser detection group with Power supply to realize signal operation processing and control and drive of the servo tracking mechanism; the laser detection group is composed of a detection lens, a filter group and a four-quadrant photodetector; the beacon laser emission group includes a crosshair laser, A transmitting telescope for expanding the laser beam and a collimating mirror for collimating the outgoing laser light; the servo tracking mechanism is composed of an azimuth axis system and a pitch axis system arranged on the azimuth axis system; it also discloses its asynchronous positioning Method; this patent uses cross-line lasers, laser cube mirrors and four-quadrant detectors to realize autonomous, rapid and asynchronous positioning within a large angle range, and has the advantages of high positioning accuracy, wide applicable angle range, compact structure, and low cost.

The invention discloses an energy-saving system for power matching between an engine and a hydraulic pump. The energy-saving system comprises a pressure sensor, an electronic load controller, an energy-saving controller, an accelerator potentiometer, an optical-electricity encoder, an actuating mechanism, a proportional electromagnetic valve, a pressure relay, an engine oil pump, the engine, a variable pump, a variable mechanism and an oil tank, wherein the oil tank is respectively connected with the engine oil pump and the variable pump, the engine oil pump is respectively connected with the accelerator potentiometer and the engine, and the engine is coaxially connected with the variable pump and is used for driving the variable pump to operate; the optical-electricity encoder is arranged on the engine; the variable pump is synchronously connected with the actuating mechanism, the pressure relay and the variable mechanism, and the proportional electromagnetic valve is arranged on the variable mechanism; the accelerator potentiometer and the proportional electromagnetic valve are respectively and electrically connected with the energy-saving controller; the optical-electricity encoder and the pressure relay are respectively connected with the electronic load controller, and the electronic load controller is connected with the pressure sensor; the variable mechanism is used for controlling the rotating speed of the variable pump.