8068 results about "Oil pump" patented technology

The invention discloses a gearbox self-lubricating structure with an oil collecting and distributing piece and a lubricating optimization method. The gearbox self-lubricating structure comprises the oil collecting and distributing piece (comprising a main oil collecting groove and an input shaft / gear set lubricating pipeline) arranged in a box body and a side lubricating oil way (an auxiliary oil collecting groove and a guide hole). According to the method, splashing oil is intercepted to the main oil collecting groove through the baffle, the oil level and the boss height are dynamically compared based on the oil throwing amount formula Q = k * b * v * h, and the oil is distributed and directionally dripped into the bearing through the lubricating pipeline. The problems of uneven lubrication, poor speed ratio adaptation and high oil stirring heating in the prior art are solved, an external oil pump is not needed, the energy consumption and the manufacturing cost are reduced, scrap iron is intercepted, the service life of the bearing is prolonged, the high-speed shaft is cooled preferentially, and the low-speed shaft is cooled as required under the full-speed-ratio working condition, and the operation stability of the gearbox is improved.

The invention discloses a sealing dynamic performance experiment test platform which comprises an environment box, an experiment sleeve, a hydraulic oil pump, a high-speed reciprocating device and a leakage detection device, a temperature control device I and a base are arranged in the environment box, a temperature sensor probe is arranged in the base, and the experiment sleeve comprises a left guide sleeve, a shaft sleeve and a right guide sleeve. A left guide sleeve and a right guide sleeve are arranged between the shaft barrel and the base, a seal is arranged between the left guide sleeve and the right guide sleeve, a coaxial through hole is axially formed between the left guide sleeve and the right guide sleeve, a to-be-tested sealing piece is arranged between the shaft barrel and the base, an oil supply pipeline and an oil return pipeline are arranged between the shaft barrel and the base and provided with a seal, and the oil supply pipeline and the oil return pipeline are both communicated with a hydraulic oil pump containing a temperature control device II. The lower portions of the left guide sleeve and the right guide sleeve are respectively provided with an inverted funnel structure and a middle inclined notch. The device can provide single or multi-working-condition combined simulated use working conditions such as high temperature, high pressure, high speed, pulse, low temperature and reciprocation, measure the leakage rate in real time, and realize data measurement and performance evaluation of hydraulic reciprocating dynamic sealing.

The invention belongs to the technical field of petroleum machinery, and particularly relates to a combined type polish rod breakage blowout prevention wellhead device which comprises a valve body, a horizontally symmetrical penetrating cavity is formed in the valve body, the two ends of the cavity are blocked and fixed through glands, and a vertically-penetrating annular channel is further formed in the valve body and allows an oil pumping polish rod to pass through. Two gate plates are further symmetrically arranged in the valve body corresponding to the horizontally-symmetrical penetrating cavity, a rib plate is arranged on one side of the cover plate, and a right-angle rubber base is fixedly connected between the gate plates and the rib plate through bolts. The device can be automatically triggered after the oil pumping polish rod is broken and disengaged, a blowout channel is rapidly sealed, oil well back pressure spraying is prevented, environment pollution caused by crude oil spraying is avoided, and the device has the function of guaranteeing sealing between a wellhead device and the oil pumping polish rod during normal production of a rod-pumped well. And the wellhead device can be isolated from the shaft when the packing is maintained and replaced by the oil extraction system of the pumping unit.

A power transmission device for a vehicle includes a housing that accommodates a power transmission mechanism, a control valve configured to control an oil pressure supplied to the power transmission mechanism, an oil pump configured to supply oil to the control valve, a partition section that divides an interior of the housing into a first chamber that accommodates the power transmission mechanism and a second chamber in which the control valve is arranged upright, and a communication path communicating between the first chamber and the second chamber. An opening area of the communication path is set so that an amount of the oil flowing from the second chamber into the first chamber through the communication path is less than an amount of the oil drained into the second chamber from the control valve while the vehicle is in motion.

The invention discloses intelligent bent pipe punch forming equipment and method, and relates to the technical field of pipe fitting punch forming, the intelligent bent pipe punch forming equipment comprises a machine body and a pipe blank, the machine body is provided with a die mechanism, a pushing mechanism and an elbow core rod provided with a first quick release assembly, and the die mechanism comprises an upper die and a lower die which are fixed to the machine body; the upper die and the lower die are respectively provided with forming runners which are matched with each other, and the tube blank is placed in the forming runner of the lower die. By arranging the pressure feedback mechanism and the lubricating oil spraying mechanism, the friction force between the pipe blank and the elbow core rod is converted into the pressure value change in the pressure detection cavity and transmitted to the piezoelectric sensor, the piezoelectric sensor feeds back the pressure value to the control unit, and the control unit can control the rotating speed of the oil pump according to the pressure value. The larger the friction force between the pipe blank and the elbow core rod is, the higher the rotating speed of the oil pump is, the more lubricating oil is sprayed out of the oil spraying holes, the intelligent degree of lubrication is improved, and the stamping effect is guaranteed.

The invention discloses an oil pumping unit transmission flexible connection fault diagnosis method based on big data and artificial intelligence. The oil pumping unit transmission flexible connection fault diagnosis method sequentially comprises the following steps of S1, collecting monitoring data related to oil pumping unit transmission flexible connection; s2, preprocessing the collected monitoring data; s3, a traditional machine learning method and a deep learning technology are fused, and an oil pumping unit transmission flexible connection fault early warning model is established; s4, analyzing the real-time monitoring data of the flexible connection by using the fault early-warning model, quickly judging abnormal conditions in the real-time monitoring data, making a fault early-warning and analysis report, and providing the fault early-warning and analysis report to a manager; and S5, continuously monitoring and optimizing the early warning model. According to the fault diagnosis method, through data management, an intelligent algorithm and model analysis, the transmission flexible connection state of the oil pumping unit is monitored in real time, potential faults are predicted and diagnosed in advance, and an alarm is given in time when a belt of the oil pumping unit or a steel wire rope of a beam hanger is broken, so that the production efficiency and safety of an oil well are improved, and construction of an intelligent oil field is assisted.

The invention relates to an aircraft electric drive oil cooling structure which comprises an outer rotor assembly, a stator assembly, a controller assembly, an oil pump and a heat dissipation assembly, the stator assembly comprises a stator shell and a winding, a sealing cover is further fixed to the outer side of the winding, and a cooling cavity is formed between the sealing cover and the stator shell; a bottom plate is further arranged at the bottom of the stator shell, the controller assembly is fixed in a mounting cavity formed by the bottom plate and the stator shell and comprises a circuit board and a cooling plate which are close to each other, the circuit board is connected with the winding, an oil duct A is further arranged on the bottom plate, an oil inlet pipe and an oil outlet pipe are arranged on the cooling plate, and an oil duct B communicated with a cooling cavity is further arranged on the bottom plate; the heat dissipation assembly comprises a heat dissipation fin set and a fan assembly, the heat dissipation fin set and the oil pump are both fixed to the lower portion of the bottom plate, heat dissipation fins form a ring and are arranged outside the oil pump in a surrounding mode, the heat dissipation fin set, the oil pump and the bottom plate are communicated with one another, and the fan assembly is fixed to the lower portion of the heat dissipation fin set. Efficient, light-weight, high-integration-level and reliable heat dissipation of the electric drive of the aircraft is achieved.

The invention discloses a hydraulic engineering pipeline butt welding device, and relates to the technical field of pipeline butt welding. The hydraulic engineering pipeline butt welding device comprises a welding table, the top of the welding table is provided with a fixed clamping seat and a sliding clamping seat driven by an electric push rod, the interior of the welding table is rotationally connected with a rotating plate, the interior of the rotating plate is provided with a welding gun driven by the electric push rod, and the sliding clamping seat is slidably connected with a clamping plate; a clamping assembly is arranged on the welding table and comprises a first hydraulic bin, and an oil pump is assembled at one end of the first hydraulic bin. According to the hydraulic engineering pipeline butt welding device, an oil pipeline is assembled on the oil pump, the oil pump is started, and the first hydraulic bin, the oil pump, the connecting rod, the second hydraulic bin, the stress block, the arc-shaped block, the torsional spring rod and the friction plate are matched, so that when the pipeline is clamped, the overall stability of the device is improved, and the subsequent butt operation of the device is more stable.

The invention relates to an electric drive assembly and a vehicle, and belongs to the technical field of electric drive assemblies. The electric drive assembly comprises a motor assembly, a speed reducer shaft tooth assembly and a cooling lubricating oil way, the motor assembly is in transmission connection with the speed reducer shaft tooth assembly, the motor assembly and the speed reducer shaft tooth assembly are each provided with a matched bearing set, and the cooling lubricating oil way comprises an oil pumping assembly, a main oil way, a branch oil way, an oil spraying pipe and a plurality of bearing lubricating oil ways. The oil pumping assembly is used for pumping oil to the main oil way, the branch oil ways and the oil spraying pipe communicate with the main oil way, and the bearing lubricating oil ways correspond to bearings in the bearing pack one to one. Wherein the branch oil way is used for outputting oil liquid to the motor assembly, the oil spraying pipe is provided with a plurality of first oil spraying openings, and the first oil spraying openings correspond to a plurality of bearings in the bearing set, so that the oil liquid can be sprayed to the corresponding bearings from the first oil spraying openings to form corresponding bearing lubricating oil ways. According to the electric drive assembly, a cooling lubricating oil way in the electric drive assembly can be simplified.

The invention discloses a rotating speed control method and system for an electronic oil pump of a dual-motor hybrid power system and a vehicle, relates to the technical field of vehicle energy, and is used for solving the problem that the power consumption of the electronic oil pump is high in the related art. The method comprises the steps that if a motor does not have a locked-rotor fault, the temperature of the motor and the temperature of lubricating oil in an oil pan are collected; if the temperature of the lubricating oil is larger than or equal to a preset first temperature threshold value and the temperature of the motor is smaller than or equal to a preset second temperature threshold value, the cooling demand flow of the motor, the shaft tooth lubricating flow and the actual output flow of a mechanical oil pump under the current working condition are obtained; obtaining the required total flow according to the cooling required flow and the shaft tooth lubricating flow of the motor; if the difference value between the required total flow and the actual output flow is larger than zero, the rotating speed of the electronic oil pump is adjusted and controlled according to the difference value and the lubricating oil temperature.

The invention discloses a low-loss double-reverse-star rectifier transformer for a hydrogen production system, and relates to the technical field of double-reverse-star rectifier transformers, the low-loss double-reverse-star rectifier transformer comprises a box body, cooling fins, a coil, a connector lug, a supporting box and a cooling module, the cooling fins are installed on the outer wall of the box body, the coil is installed on the inner wall of the box body, the connector lug penetrates through the top of the box body, and the supporting box is arranged in the box body. One end of the connector lug is connected with the outer wall of the coil, and a supporting box is installed on the outer wall of the box body. The oil pump is started to suck transformer oil in the box body into the continuous bow-shaped pipe, at the moment, the first fan is started to generate wind power to blow to the surface of the continuous bow-shaped pipe, so that the transformer oil in the continuous bow-shaped pipe is cooled, and the cooled transformer oil enters the box body again through the discharge head; at the moment, a first motor rotates to drive a first beating head to rotate, the first beating head rotates to drive a T-shaped frame to move, the T-shaped frame moves to drive a first spring to move, and the first spring moves to enable the T-shaped frame to drive a ram to move.

A constant-flow control valve group, an auxiliary arm control module, a complete hydraulic system, and a crane. The constant-flow control valve group comprises: a cartridge valve; a cartridge reversing valve, comprising a working oil port on one side and a main oil return port and a reversing valve oil inlet selectively connected to the working oil port on the other side, the working oil port being connected to a control oil port of the cartridge valve, and the reversing valve oil inlet being connected to a main oil inlet of the cartridge valve; and a feedback on-off valve, disposed in a working feedback oil path connected between the main oil inlet of the cartridge valve and a main feedback oil port of the constant-flow control valve group. The auxiliary arm control module comprises the constant-flow control valve group and a main reversing valve. The complete hydraulic system comprises the auxiliary arm control module and an auxiliary arm luffing cylinder, and may further comprise a load-sensitive oil pump and a main valve. The present application can achieve the effect of directly connecting an auxiliary arm hydraulic system to an existing complete hydraulic system as a sub-module without altering the original system.

The invention discloses an outburst coal seam crossing drilling pipe-pushing type hydraulic cave-making and spray-eliminating drilling tool which comprises a pipe-planting drill bit, a pipe-pushing and spray-eliminating device, a pipe-pushing jet device, at least one pipe-pushing drill rod and a pipe-pushing hollow water braid which are connected in sequence. A flow supply channel flowing towards the pipe planting drill bit and an exhaust pipe planting channel with the flow direction opposite to that of the flow supply channel are arranged in the pipe planting drill bit, the pipe pushing spray eliminating device, the pipe pushing jet device, the pipe pushing drill rod and the pipe pushing hollow water braid. The hydraulic drilling machine has the beneficial effects that the mode of controlling axial flow supply of a drill bit and radial flow supply of a nozzle through water pressure of a pump is abandoned, switching between axial flow supply and radial flow supply is achieved through an oil pump of the hydraulic drilling machine and a hollow oil cylinder of a hollow water braid of a push pipe, and the hydraulic drilling machine is not affected by the water pressure, the drilling depth and the gas-water pressure in a loose hole gas pocket; radial cave forming can be achieved through water pressure of a clear water pump station, radial cave forming can be achieved through hydrostatic pressure if a soft outburst coal seam occurs, and accurate switching can be achieved.

A simple structure electric oil pump with an one-way air valve is provided, which includes a control box and an electromagnetic exhaust valve. The control box is provided with a connecting pipe and a control board. One end of the connecting pipe is connected to an oil extraction pipe, and the other end is connected to an oil outlet pipe. The control box is equipped with an intake port and an intake duct. The electromagnetic exhaust valve is equipped with an exhaust tube and an intake tube. The exhaust tube is installed inside the intake port. When the stop button is pressed, the electromagnetic force disappears, and the exhaust tube and the intake tube are in a ventilated status, allowing the connecting pipe to be connected to the outside for exhaust, and external air is discharged into the connecting pipe to destroy the siphon effect of the pipeline.

The present invention discloses a high-pressure oil pump drive housing assembly sealing rapid detection device, which belongs to the technical field of high-pressure oil pump drive housing assembly sealing detection, including a support base for supporting the detection device; a rotating assembly for driving the limit assembly to move and convey the oil pump housing; an oil conveying assembly for conveying the detection liquid; and an adjustment assembly for adjusting the position of the limit assembly, so as to facilitate the placement of the housing. The present invention sets a motor, the motor starts to drive the first rotating rod to rotate, the first rotating rod drives the first pulley to rotate, the first pulley drives the second pulley to rotate through the belt, drives the second rotating rod to rotate, the second rotating rod drives the rotating plate to rotate, the rotating plate drives the guide rod to rotate, when the moving block contacts the abutment block, the abutment block squeezes the moving block, the guide ring slides on the guide rod, the spring shortens, drives the limit frame to move, the staff places the housing in the limit frame, which is convenient for clamping and limiting the housing, and can prevent the housing from tipping over.

The invention provides a conduction oil boiler system optimization control method and system based on an adaptive algorithm. The method comprises the steps of data acquisition, data preprocessing, model training, parameter optimization and real-time control. The system comprises a sensor network, a data processing module, a model training module, an optimization calculation module and a control execution module. Boiler operation data are collected in real time through a sensor network, a combustion boiler natural gas dynamic prediction model and a circulating pump efficiency optimization model are constructed after preprocessing, parameters such as the number of boilers, the circulating pump frequency and the oil supply temperature are optimized through an adaptive differential evolution (ADE) algorithm, and finally closed-loop adjustment is achieved through a control execution module. According to the method, the data-driven modeling technology and the self-adaptive optimization capability are utilized, so that system parameters can quickly respond to process demand changes, the heat efficiency is remarkably improved, the energy consumption is reduced, the temperature fluctuation is reduced, the operation and maintenance cost is optimized, and the operation performance and the economical efficiency of the heat conduction oil boiler system are comprehensively improved.

The power assembly comprises a shell, the heat exchanger, an oil pump, a temperature control valve, a first oil way and a second oil way, the shell comprises a speed reducer containing cavity, the speed reducer containing cavity is used for containing a gear set of a speed reducer, and an inlet of the oil pump is used for communicating with the speed reducer containing cavity; the first oil way and the second oil way are connected between an outlet of the oil pump and the speed reducer containing cavity in parallel. The heat exchanger is used for cooling the cooling oil in the first oil way. The temperature control valve is used for controlling the flow ratio of the first oil way to the second oil way. The first oil way where the heat exchanger is located is shunted and connected in parallel through the temperature control valve and the second oil way, low-temperature lubrication can be rapidly achieved, oil stirring losses of a speed reducer gear set are reduced, and the efficiency of a power assembly is improved.

A motorcycle that inhibits damage to a transmission and a clutch. The motorcycle includes: a drive motor; a transmission; a clutch that connects or disconnects power transmission between the transmission and the drive motor; a mechanical oil pump that is driven by the drive motor to supply a coolant to the drive motor and the transmission; and a control portion that drives the drive motor to supply the coolant to the drive motor and the transmission if an accelerator operation is not detected and a neutral state is detected, or if an accelerator operation is not detected and a disconnected state of the clutch is detected.

The invention discloses a marine winch brake device, which relates to the technical field of winches, and comprises an outer shell, a movable shell, a brake mechanism, a pinion, a bull gear, a multi-stage buffer mechanism, a locking mechanism, a clamping mechanism and a connecting shaft, the piston is pushed through the oil cylinder, power is transmitted through hydraulic oil, the brake block is driven to brake the brake disc, primary braking of the winch main shaft is achieved, and the braking mode is efficient and reliable; the wear-resistant anti-skid layers are arranged on the opposite faces of the brake blocks, friction force is effectively increased, the braking effect is improved, and the stability of the braking process is guaranteed; the tooth grooves in the outer circle face of the movable shell are matched with the movable clamping teeth, when the braking resistance is increased, the movable clamping teeth and the tooth grooves are indirectly separated for braking, and the braking performance is further optimized; the large gear is used for driving the multi-stage buffering mechanism to work, oil in the oil storage cavity is pumped into the buffering oil cavity through the hydraulic pump for buffering and energy absorption, winch damage caused by braking is avoided, and the service life of the winch is prolonged.

The invention relates to a fiber composite material uniform compaction device and a compaction method. The compaction device comprises a sealing gasket, a lower mold plate, a heating and cooling channel, an upper mold plate, a metal film, an oil pump, a base and the like, forming surfaces are arranged on the two opposite surfaces of the lower mold plate and the upper mold plate, and fiber prepreg is laid on the forming surfaces; the metal film is located on the lower side of the upper die plate, a metal bag cavity is formed between the metal film and the upper die plate, and the oil pump is connected with the metal bag cavity and fills oil into the metal bag cavity to generate forming pressure. The lower die plate is fixed to the base, and heating and cooling channels are arranged in the upper die plate and the lower die plate. The interior of the metal bag cavity is pressurized through the oil pump, uniform pressure is applied to all the surfaces of the fiber prepreg through expansion of the metal bag cavity, and therefore the problems that a traditional hard mold cannot apply uniform pressure to the curved surface and a soft mold cannot be attached to a blank in the whole process, so that a fiber composite material is not compacted sufficiently are solved.

The invention provides a motor bearing monitoring method and system, computer equipment, a medium and a vehicle, and the method comprises the steps: obtaining a motor bearing signal, and carrying out the state monitoring of a motor bearing based on the signal value reduction amount and the signal waveform of the motor bearing signal in a preset time period, and dynamically adjusting the lubricating oil flow of the motor bearing according to the state monitoring result of the motor bearing. The motor bearing signal comprises motor bearing current, and the state monitoring result of the motor bearing comprises that the lubricating oil flow of the motor bearing at the current moment is smaller than preset lubricating oil flow. The state of the motor bearing can be monitored in real time according to the motor bearing signal, the lubricating oil flow of the oil pump can be dynamically adjusted according to the state monitoring result of the motor bearing, and therefore precise lubrication and protection of the motor bearing are achieved. The lubricating oil flow of the oil pump can be dynamically adjusted, the lubricating efficiency of the motor bearing is improved, the operation power consumption of a power assembly is reduced, and meanwhile the service life of the motor bearing can be prolonged.

The invention belongs to the technical field of transformers, and discloses an explosion-proof sealed oil-immersed transformer which comprises an oil-immersed transformer body, a mounting frame is fixedly mounted at the top of the oil-immersed transformer body, an oil conservator is fixedly mounted on the mounting frame, the bottom of the oil conservator communicates with an explosion-proof oil pipe, and the explosion-proof oil pipe communicates with an oil storage tank. The explosion-proof oil pipe penetrates through and extends into the oil-immersed transformer main body, an oil pump is arranged on the explosion-proof oil pipe, an automatic pressure relief mechanism is arranged on the oil-immersed transformer main body, and the automatic pressure relief mechanism comprises a pressure relief valve cylinder. According to the scheme, through a spring-sealing plug linkage structure in the automatic pressure relief mechanism, when the internal pressure exceeds a threshold value, a sealing plug is pressed to move upwards, a pressure relief hole communicates with a pressure relief cavity, high-pressure gas is directionally exhausted through a one-way exhaust valve, and shell burst is avoided; after the pressure recovers, the reset spring automatically resets the sealing plug, the sealing performance is maintained, external impurities are prevented from invading, manual intervention is not needed, and repeated and reliable pressure relief is achieved.

A vehicle drive device includes a rotating electric machine disposed on a first axis, an output gear mechanism and an output member disposed on a second axis, and a case that houses these elements. The second axis is disposed below the first axis, a suction port of an oil pump is disposed below the first axis and the second axis and between the first axis and the second axis in a width direction, an outermost gear is disposed so that a direction of rotation at a lower end portion of the outermost gear during forward movement of a vehicle points toward the suction port, and a part of a peripheral wall section of the case that faces a lower surface of the rotating electric machine is inclined downward toward the suction port.

The invention discloses a cushion block for realizing differential pushing of a curved bridge of a common walking jack, which comprises a first cushion block and a second cushion block, the first cushion block and the second cushion block are respectively arranged on the walking jack on the inner side and the outer side of the bottom surface of a main beam of the curved bridge, and the first cushion block comprises a first bearing plate; the first bearing plate is placed in the sliding block and can rotate freely. The sliding block is placed in the base, can horizontally move in any direction in the horizontal plane and can automatically reset, the position of the sliding block is adjusted through the crank, and the differential distance in the differential pushing process is achieved. The second cushion block comprises a second bearing plate and a sleeve, the second bearing plate is placed in the sleeve, the structure of the second bearing plate is the same as that of the first bearing plate, and the second bearing plate can rotate freely. The bent bridge differential pushing device can adapt to beam body rotation, transverse displacement and longitudinal differential displacement in the differential pushing process, bent bridge differential pushing can be achieved through an oil pump control system of a common walking type jack, and the ideal state that deviation rectification is almost not needed theoretically is achieved.

The invention belongs to the technical field of hydraulic systems, and discloses a drive-by-wire full-hydraulic system and method and a steering method. Wherein the drive-by-wire full-hydraulic system comprises an integrated control valve module, the integrated control valve module is connected with a hydraulic oil tank, an oil filter and an electric control full-hydraulic steering gear module, the electric control full-hydraulic steering gear module is connected with a control module and a wheel angle sensor, and the hydraulic oil tank is sequentially connected with an electronic oil pump and the oil filter; according to the system, hydraulic oil leakage can be effectively prevented, the safety risk is remarkably reduced, natural resources and the ecological environment are protected, consistency and synchronization of actual steering and steering required by control are achieved, steering controllability is improved, and system safety is further improved.

The present invention discloses a mechanical engineering reducer with an oil cooling assembly and a control method thereof, comprising a cooling box and a reducer fixedly mounted on the top of the cooling box, a motor fixedly mounted on the top of the cooling box near one side of the reducer, a coupling fixedly connected between the motor and the reducer, an oil pump fixedly mounted on the top of the reducer, a liquid inlet of the oil pump fixedly connected to a liquid inlet pipe extending into the interior of the reducer, a liquid outlet fixedly connected to a liquid outlet pipe, a purifier connected to the liquid outlet pipe, an S-shaped heat exchange tube fixedly connected to one end of the liquid outlet pipe, an air cooling fin assembly for cooling the S-shaped heat exchange tube provided inside the cooling box, and fan assemblies provided on both sides of the air cooling fin assembly. The present invention relates to the field of reducer cooling technology, and the mechanical engineering reducer with an oil cooling assembly and a control method thereof solve the problem that the existing heat dissipation device of the reducer has certain limitations and an unsatisfactory heat dissipation effect.

The invention discloses a multi-temperature-zone collaborative refrigeration system and an energy-saving control method for a variable-temperature refrigeration house, and belongs to the technical field of refrigeration house temperature control, and the method comprises the steps of calling a dynamic load prediction model based on an obtained initial real-time monitoring data set, and calculating thermal load change trend data of each temperature zone in a preset time period; the electronic expansion valve is adjusted and a start-up control instruction is generated by combining the thermal load trend and the cargo temperature and humidity requirements, and the refrigerating unit is started, stopped or switched to operate the system; during system operation, the central oil way management module is started, and the oil level of a compressor is monitored and compared with a preset safety threshold value to generate an oil way adjusting instruction; starting an intelligent oil pump to convey oil according to the instruction, and performing closed-loop control on an electronic expansion valve by taking the superheat degree or the pressure value of an evaporator outlet as a feedback signal; summarizing data of the execution mechanism and the sensor and feeding back to the central controller to form a closed loop; according to the invention, multi-temperature-zone coordinated regulation and control are realized, the refrigeration efficiency and the equipment safety are improved, and the energy consumption is reduced.

The utility model discloses a transmission structure of a gantry numerical control machining center, and relates to the technical field of numerical control machine tools, in particular to a fixed plate and a sliding seat, one side of the fixed plate is movably connected with a ball screw, and the outer ring of the ball screw is in threaded connection with a ball nut. The sliding seat comprises a driving part connected with the ball nut and a driven part movably connected with the fixing plate, the driving part is fixedly connected with the driven part, the outer rings of the two ends of the ball screw are wrapped with telescopic pipes, one end of each telescopic pipe is connected with the driving part, and the other end of each telescopic pipe is connected with the fixing plate. According to the transmission structure of the gantry numerical control machining center, through the arrangement of the first cooling structure, the second cooling structure and the oil pump, the first cooling structure and the second cooling structure can achieve the cooling and lubricating functions at the same time, and the friction force and friction heat between the ball nut and the ball screw are reduced; friction force and friction heat between the rollers and the fixing plate are reduced, and the service life of the transmission structure is prolonged.

The invention discloses a mountain electromagnetic ejection exploration seismic source device and an acceleration method thereof.The mountain electromagnetic ejection exploration seismic source device comprises a crawler walking device and a seismic source device, the crawler walking device comprises a crawler chassis, a hydraulic oil pump and an engine, and a working table is installed on the crawler chassis; a hydraulic oil pump for providing power for the crawler chassis and an engine for providing power for the hydraulic oil pump are installed at one end of the working table top, and a seismic source device for controlling the impact speed through an electromagnetic ejection device is installed at the other end of the working table top. The device can generate high-energy seismic waves, the energy of the seismic waves can be adjusted, the working efficiency is high, and the device adapts to the mountain working environment.

The invention relates to a plunger pump system, a control method and a filter press. The plunger pump system comprises an oil storage container, an oil pump device, a plunger device and a hydraulic device. The hydraulic device comprises two hydraulic assemblies, each hydraulic assembly comprises an oil cylinder and a piston, the piston divides the oil cylinder into a rod cavity and a rodless cavity, and the rod cavities of the two hydraulic assemblies or the rodless cavities of the two hydraulic assemblies are communicated with each other. The oil pump device and the hydraulic device are connected through an oil supply pipeline, a liquid flow reversing device and a one-way valve are connected to the oil supply pipeline, the flow direction of hydraulic oil in two branch pipelines of the oil supply pipeline is controlled by the liquid flow reversing device to be periodically switched, and the flow directions of the hydraulic oil in the branch pipelines are opposite at the same moment. One end of the electric control overflow device is connected between an oil pump device and a one-way valve, the other end of the electric control overflow device is connected with an oil storage container, and the electric control overflow device is controlled to conduct an oil outlet of the oil pump device and the oil storage container during reversing of the liquid flow reversing device and discharge impact of hydraulic oil reversing on the plunger pump system.