733 results about "Friction loss" patented technology

The invention relates to the technical field of intelligent oil injection control, in particular to a limited slip differential gear oil performance directional optimization method and system.The limited slip differential gear oil performance directional optimization method comprises the following steps that the temperature rise rate is collected through a temperature sensor to calculate the gear shaft elongation, and a meshing clearance trend vector is generated by combining differential temperature time sequence analysis; the stability correction is calculated by fusing oil film thickness data, the injection angle compensation driving servo motor is solved based on vector projection, the adhesion factor index is constructed by coupling the oil injection feedback and the oil film difference, the oil product meeting the tension condition is switched when the limit is exceeded, and the lubrication recovery performance is evaluated. According to the method, gear shaft temperature rise and differential mechanism temperature gradient data are collected in real time, meshing clearance accurate prediction is achieved by combining expansion coefficient analysis, stability judgment is improved by fusing oil film thickness data, jet precision is optimized based on a vector projection dynamic compensation jet angle, and an adhesion factor index containing a phase difference is constructed to achieve lubrication attenuation early warning. And oil products are accurately switched by dynamically matching tension and viscosity threshold values, so that friction loss is reduced.

The invention relates to the technical field of bearings, and discloses a ceramic angular contact ball bearing with high bearing capacity, the ceramic angular contact ball bearing comprises an outer ring, an inner ring, a rolling body, a retainer and an oil storage cavity, the outer ring is of a cylindrical structure, and the inner surface of the outer ring is in contact with the rolling body; the inner ring is positioned inside the outer ring, and the outer surface of the inner ring is contacted with the rolling body; and the rolling bodies are a plurality of spherical ceramic elements which are fixed and separated by the retainer. By optimizing the arrangement mode and material selection of the rolling bodies, the bearing has higher bearing capacity and anti-overturning performance under the high-load condition; the heat dissipation through holes are formed in the retainer, so that the heat dissipation performance of the bearing in the running process is remarkably improved, and the bearing failure risk caused by overheating is reduced; through the design of the oil storage cavity and the oil outlet micropores matched with the oil storage cavity, uniform supply of lubricating oil is achieved, and friction loss between the rolling body and the inner ring and the outer ring is reduced.

The utility model provides an on-line rotary viscometer, which belongs to the technical field of viscosity measuring instruments and comprises a measuring chamber, a rotor, a stator, a driving component and a detecting piece, and the measuring chamber is suitable for being communicated with a pipeline to be measured; the rotor is arranged in the measuring chamber, the rotor is of a cylinder structure with a cavity inside, and a plurality of liquid inlet grooves communicated with the cavity are formed in the side wall of the rotor; the stator is rotatably arranged in the cavity, and a medium channel is arranged between the stator and the rotor; the driving assembly is connected with the rotor, a medium flowing through the medium channel can rotate around the stator under the rotating action of the rotor, and the rotating medium can drive the stator to rotate or drive the stator to generate a rotating trend; the detection piece detects the viscous torque borne by the stator during rotation. According to the online rotary viscometer provided by the utility model, the rotation of the stator is driven by a medium without friction loss caused by a transmission process, so that the viscous torque during the rotation of the stator is accurately obtained, and the accuracy of a result is improved.

The invention relates to the technical field of speed reducers, in particular to a multi-stage coaxial speed reducer which comprises an outer cylinder, a first-stage gear ring and a second / third-stage gear ring are arranged in the outer cylinder, and a first-stage speed reducer, a second-stage speed reducer and a third-stage speed reducer are sequentially arranged in the outer cylinder. The first-stage planet carrier framework is axially fixed, and the second-stage planet carrier framework and the third-stage planet carrier framework axially float; gaskets / thrust bearings are arranged between stages to achieve axial supporting and friction reduction, and the last-stage three-stage planet gears adopt staggered-tooth gears to eliminate meshing clearances. Through the coaxial compact integrated design, the large reduction ratio and the compact structure are both considered; due to the lubricating circulation design of inter-stage antifriction supporting and self-adaptive rotating speed, the friction loss is greatly reduced, and the transmission efficiency is improved; the structure of staggered tooth clearance eliminating, elastic buffering and shaft system stabilizing effectively reduces gear abrasion and impact loads, remarkably prolongs the service life, has the advantages of being high in transmission precision, fast in response and stable in operation, and can be used for precise transmission, automobile active stabilizer bars and other scenes.

The invention provides a steel wire rope winding device, which belongs to the technical field of winch winding equipment and comprises an operating frame, the operating frame is connected with a guide wheel, an electric cabinet and a supporting flange plate, the supporting flange plate is connected with a rotary supporting plate and a variable-frequency speed reducer, and the upper end of the supporting flange plate is provided with a driven fluted disc, a rotary disc and a winding frame. The variable-frequency speed reducer is connected with a driving fluted disc, and the guide assembly comprises a locking mechanism and a protection mechanism; the steel wire rope winding device has the beneficial effects that the winding position of a steel wire rope can be changed through the motor, the lead screw and the guide frame, uniform arrangement is achieved, the winding quality is guaranteed, the torsion condition can be reduced through the clamping and guiding effects of the guide wheel, meanwhile, protective liquid can be smeared on the surface of the steel wire rope through the liquid suction column to reduce friction loss, and when the steel wire rope is clamped, the steel wire rope is prevented from falling off. And winding can be automatically stopped, the steel wire rope can be locked, an operator can be reminded in time, and therefore equipment damage or safety accidents are reduced.

The invention discloses a three-coordinate measuring machine re-measurement system and a control method, and belongs to the technical field of three-coordinate measurement, the three-coordinate measuring machine re-measurement system comprises a support, a workbench, a portal frame, a detection system, a first electric telescopic rod, a second electric telescopic rod, a third electric telescopic rod, a sliding rail, an adjusting column and a gradienter, and further comprises a main control module and a control logic module, the control logic module controls the three-coordinate measuring machine to execute a measuring task through electric connection, ceramic shells are arranged on the surfaces of the portal frame, the connecting frame, the sliding clamping block and the sliding rail, and the characteristics of high rigidity and low expansion coefficient of ceramic materials are utilized, so that deformation of a traditional metal structure caused by temperature change or long-term friction is avoided. Friction loss is reduced while the contact area is reduced, and the track precision when the portal frame translates along the X axis is ensured. The rigid support of the ceramic shell enables the equipment not to depend on a strict constant temperature environment, eliminates a thermal deformation error source from the mechanical structure level, and improves the measurement stability in a complex environment.

The invention relates to the technical field of part stamping dies, in particular to an automobile part machining stamping forming die which comprises a mounting plate, a fixed supporting structure is arranged below the mounting plate, a first mounting block is fixedly mounted on the upper side of the mounting plate, and a detachable lower die base is arranged on the upper side of the first mounting block. In the process that a sliding block moves downwards along with a movable adaptive block, the top face of the sliding block retracts into a first sliding cavity, space is reserved for stamping, when stamping is completed and an upper die block ascends, a second spring pushes the movable adaptive block to move upwards, the top of the sliding block protrudes out of the surface of a lower die base to eject a workpiece, and the top of the sliding block makes contact with an extrusion sensor to trigger an automatic oil injection pump; lubricating oil is injected into the oil injection hole through the guide pipe and sprayed to the surface of the lower die base through the oil injection groove to complete lubrication of the lower surface, the bidirectional lubrication mechanism ensures that the metal sheet is comprehensively lubricated in the stamping process, friction loss is remarkably reduced, and the product surface quality is improved.

The invention relates to a water pump scheduling method for estimating lift based on data driving, which comprises the following steps: calling structural information and sensing data, calculating friction loss and structural symmetry, extracting differential pressure data flow gradient, judging load matching degree, activating path nodes, identifying differential pressure data change sections, and mapping a calculation path. According to the method, dynamic correction and compensation of input parameters are achieved by means of conjoint analysis of the structural features of the water inlet and the water outlet and flow pressure difference data, and comprehensive judgment of the working condition matching degree and the periodic change state is combined, so that the flow resistance trend is judged, and the calculation result is corrected. The adaptability to cold load fluctuation and loop temperature difference change is enhanced, the response capability of lift calculation to water body characteristic change is improved by introducing flow resistance trend and viscous state factors, and the calculation stability of the model in different operation sections and the calculation accuracy of the model in complex working conditions are optimized by using a path activation configuration and output switching mechanism.

The utility model discloses a plastic oil self-lubricating maintenance-free axle bearing which comprises an outer ring, a rolling body, an inner ring and plastic oil, the rolling body is arranged between the inner ring and the outer ring, the plastic oil is in contact with the rolling body and is used for lubricating the rolling body, the utility model provides the novel self-lubricating maintenance-free axle bearing, and the plastic oil formed by an oil-saturated polymer matrix is used as a lubricating medium of the axle bearing; the lubricating oil can stably run in high-load, high-dust, high-temperature and low-temperature environments, and a lubricating film is autonomously formed in the running process, so that the maintenance frequency is reduced, the friction loss is reduced, the wear resistance is enhanced, and even the lubricating oil is maintenance-free. And the solid plastic oil is not easy to leak, so that the risk of environmental pollution is reduced.

According to the composite continuum mechanical arm control method and system and the mechanical arm, friction loss is considered, the drive wire node tension transmission relation is analyzed, drive wire tension distribution is obtained, and then deformation drive of a flexible beam is equivalent; statics analysis is carried out on the notch continuum mechanical arm, a static model is established by using an Euler-Bernoulli beam theory, and the static model is solved by using a Taylor series expansion method; based on static model data, a Kepler elliptic equation is used for fitting the tail end track of the notch continuum mechanical arm, and a relation equation of the concentric tube continuum mechanical arm relative to the tail end coordinates is constructed; and according to matrix coordinate conversion, an equation of key parameters needed for solving the control parameters is established and iteratively solved, and a control parameter equation set is established to solve the control parameters of the composite continuum mechanical arm. The control response timeliness can be improved, and the control accuracy and precision can be improved.

The invention discloses a drilling fluid flow calculation method for gas lift reverse circulation drilling. The drilling fluid flow calculation method comprises the following steps: S1, defining a gas lift reverse circulation lifting force and friction loss pressure model; s2, assuming that the drilling fluid flow in the circulation process is Qm; s3, calculating the total friction pressure of gas lift reverse circulation; s4, calculating the gas lift reverse circulation lifting force; and S5, according to the gas-lift reverse circulation lifting force and the gas-lift reverse circulation total friction force, the upward backflow amount of the drilling fluid is calculated. According to the invention, by inputting the gas lift reverse circulation well depth structure and the drilling related parameters, the influence of the gas lift reverse circulation well depth structure and the drilling related parameters on the backflow amount of the drilling fluid is researched, so that the optimal operation parameters of the optimal gas lift reverse circulation are obtained. According to the method, parameters of the air compressor air supply amount, the double-wall drill rod tripping-in depth, the double-wall drill rod specification and the single-wall drill rod specification selected for drilling of the gas lift reverse circulation geothermal well drilling can be optimized, and a reasonable theoretical basis is provided for more reasonably achieving gas lift reverse circulation drilling.

The application discloses a permanent magnet motor, which comprises a stator and a rotor, the rotor is arranged at the inner circumferential side of the stator, the rotor comprises a rotor house and a plurality of magnetic pole modules, the plurality of magnetic pole modules are arranged at the outer circumferential side of the rotor house along the circumferential direction of the rotor house, and the gap between adjacent magnetic pole modules extends outwardly and obliquely from the outer wall of the rotor house in the direction away from the rotation direction of the rotor house. In the application, the air in the driving gap flows outward during the rotation of the permanent magnet motor, the air in the air gap between the driving stator and the rotor flows, the permanent magnet motor is cooled, the air flow resistance and the wind friction loss are reduced, the heat dissipation of the permanent magnet motor is enhanced, in addition, the resistance during the rotation of the rotor is reduced, the mechanical loss of the rotor is reduced, and the efficiency of the permanent magnet motor is improved.

The utility model relates to the technical field of steel pipe necking, in particular to a steel pipe necking device. The necking device comprises a first shell, a second shell, a necking assembly and an oiling assembly. The second shell is arranged at the inlet end of the first shell. The necking-down assembly is arranged in the first shell and used for conducting necking-down treatment on the steel pipe. The oiling assembly is arranged in the second shell, and lubricating oil is smeared on the steel pipe before necking. The oil coating assembly comprises an oil coating piece which rolls through a plurality of balls and coats lubricating oil on the steel pipe; the oil supplementing part is used for supplementing lubricating oil for the oil coating part; and the pushing and pressing piece is used for pushing the oil storage sponge to extrude the lubricating oil filled in the oil storage sponge to the balls. When a steel pipe passes through the second shell, the multiple balls can be driven to rotate, and therefore lubricating oil stained on the balls is evenly smeared on the steel pipe. A layer of lubricating film can be formed on the surface of the steel pipe, friction force between the steel pipe and the necking module is reduced, and therefore friction loss in the machining process is reduced.

The invention discloses concentric double-shaft stirring equipment, and relates to the field of stirring equipment, the concentric double-shaft stirring equipment comprises an outer shaft and an inner shaft which are coaxially arranged, the inner shaft is sleeved with the outer shaft, the outer shaft is coaxially sleeved with a box body, one side of the box body is provided with an outer shaft transmission assembly used for driving the outer shaft to transmit, and a transmission part of the outer shaft transmission assembly is arranged in the box body; an inner cavity is formed between the outer shaft and the inner shaft, an outer cavity is formed between the outer shaft and the box body, and a lubricating oil circulating system is arranged between the inner cavity and the outer cavity. Meanwhile, full lubrication and cooling of all friction parts are achieved through a lubricating oil circulating system, friction loss is reduced, and the service life of equipment is prolonged.

The invention relates to a rotor structure and a wet operation circulating pump with the rotor structure. The rotor structure comprises a front sliding bearing, a rear sliding bearing, a rotor rod and a permanent magnet. The rotor rod is provided with a front bearing accommodating space and a rear bearing accommodating space; the rotor rod fixes the front sliding bearing through the front bearing accommodating space, the rotor rod fixes the rear sliding bearing through the rear bearing accommodating space, and the permanent magnet is fixed on the outer surface of the rotor rod; the front sliding bearing and the rear sliding bearing are respectively nested on a central fixed shaft of the shielding tank assembly, and the rotor structure concentrically rotates around the central fixed shaft under the action of electromagnetic force of the stator assembly; the rotor structure at least further comprises a bearing sleeve arranged between the front sliding bearing and the front bearing containing space. Compared with the prior art, the wet operation circulating pump has the advantages that the performance of the wet operation circulating pump is improved, and mechanical friction loss generated when the front sliding bearing and the rear sliding bearing rotate around the center shaft is greatly reduced.

The invention provides a tensile detection device for a rubber product, and belongs to the technical field of rubber tensile detection. Comprising a base, two sets of stand columns are symmetrically installed on the base, a movable plate is assembled between the stand columns, an upper clamp is fixedly connected to the outer portion of the movable plate, a lower clamp corresponding to the upper clamp in position is fixedly connected to the base, and sliding seats are arranged in the stand columns in a sleeved mode; a rotating rod and a threaded rod are movably connected into the stand column through bearings, and a servo motor for driving the rotating rod and the threaded rod to rotate is fixedly connected to the top end of the stand column. Through the arrangement of the threaded seat, the sliding seat and the separation assembly, the whole device can rapidly complete reset operation after the device completes stretching detection of a rubber product, so that the working efficiency of the whole device is improved, meanwhile, friction between a threaded rod and the threaded seat cannot be generated in the reset process, the friction loss of the device is reduced, and the device is convenient to use. And the service life of the device is indirectly prolonged.

The invention relates to the technical field of hybrid power vehicles, in particular to a clutch assembly for a hybrid power system, the hybrid power system, a control method and device of the hybrid power system, a vehicle and a storage medium. The clutch assembly includes: a power input shaft; the power input shaft is sleeved with the one-way clutch, the driving gear and the thrust transmission assembly. The one-way clutch comprises an inner ring assembly. The driving gear comprises a connecting shaft, and the outer side wall of the connecting shaft is used for being matched with the movable body of the inner ring assembly. The thrust transmission assembly is used for triggering the one-way clutch to rotate relative to the power input shaft so that the one-way clutch and the driving gear can be switched between the self-locking state and the separation state. The self-locking state means that the movable body abuts against the outer side wall of the connecting shaft; and the separation state means that a gap is formed between the movable body and the outer side wall of the connecting shaft. According to the clutch assembly disclosed by the invention, the required hydraulic pressure can be reduced, the switching efficiency of series-parallel connection modes is improved, the driving and riding comfort is improved, and the dragging and friction loss can be reduced.

The invention relates to the technical field of gravity energy storage devices, and discloses a suspension cable rail type gravity energy storage device, system and method, the device comprises a loading trolley and two parallel steel rails, the steel rails are divided into a low position area, an ascending area and an energy storage area, and potential energy adjustment is achieved through sectional design. Wherein the ascending area is a large-gradient inclined rail section, the energy storage area comprises a speed reduction slope section and a horizontal energy storage rail section, the low-position area is provided with a buffering rail section, and a three-level safety speed reduction mechanism is formed. The system is provided with an intelligent lubricating assembly, friction loss is reduced through a U-shaped groove rail and a closed-loop oil way, and dynamic scheduling is achieved by integrating a central control unit. According to the method, safe and controllable energy conversion is achieved by improving load trolley energy storage in the valley electricity period and releasing power generation in the peak electricity period in combination with the buffer rail section and the speed reduction slope section. The gravity energy storage device solves the problems that a traditional gravity energy storage device is poor in safety and low in efficiency and has the advantages of being stable in structure, accurate in control, high in adaptability and the like, and the circulation efficiency can reach 85% or above.

The utility model discloses a negative pressure operation air cooling phase modifier, which comprises a stator base, a stator unit and a rotating shaft, two ends of the rotating shaft are connected with the stator base through an end cover, and the end cover is provided with a bearing for supporting the rotating shaft and a rotary sealing mechanism for sealing the contact position of the end cover and the rotating shaft. A cavity is formed between the periphery of the stator unit and the stator base to form a cooling air path, an air cooler is installed on the cooling air path, the air cooler is connected with a cooling water system, the end cover is connected with a bearing lubricating oil system and a sealing oil control system, and the outer surface of the stator base is connected with an air control system. The rotating shaft is connected with an excitation system; according to the utility model, the internal air pressure during the operation of the phase modifier is reduced by taking measures, so that the internal air pressure is lower than the external environment air pressure, the air friction loss and the fan loss related to the air pressure and density in the phase modifier are reduced, and the efficiency and the economical efficiency of the air-cooled phase modifier during low-load operation are improved.

The invention provides a rotor engine. The rotor engine comprises a shell, a main shaft, two main shaft gears, a limiting shaft and two rotor gears, wherein the main shaft is rotatably arranged on the shell in a penetrating mode, and the two main shaft gears, the limiting shaft and the two rotor gears are contained in the shell. The two main shaft gears are sequentially sleeved on the main shaft along the axial direction of the main shaft; the limiting shaft is parallel to the spindle; the two rotor gears are sequentially arranged in the axial direction of the limiting shaft, each rotor gear comprises an outer gear ring and a rotor hinge, the outer gear rings are meshed with the main shaft gear, and working holes are formed in the outer gear rings; the rotor hinge is located in the working hole and connected with the outer gear ring, and the rotor hinge is rotationally arranged on the limiting shaft in a sleeving mode; one part of the rotor hinge extends along the axial direction of the limiting shaft so as to extend into the working hole of the other rotor gear to divide the working hole into four working cavities; the working cavity can drive the rotor gear and the main shaft gear to rotate through the rotor blade by burning and acting, so that friction loss among the main shaft gear, the rotor gear and the shell is effectively avoided, and the sealing performance of the rotor engine is guaranteed.

The invention relates to the field of pharmaceutical engineering and automatic control, in particular to a reaction kettle for synthesizing a medical intermediate and an intelligent control method of the reaction kettle. The reaction kettle comprises a reaction kettle main body, a stirring assembly integrated with a dynamic torque sensor and a thermotechnical pipeline assembly, the system firstly executes no-load calibration to draw a mechanical friction loss curve and a heat transfer coefficient map; deducting friction reference inversion apparent viscosity by using real-time torque during operation, and judging a reaction stage in combination with a reaction heat rate; then dynamic heat balance control is executed, and a medium temperature change compensation strategy or a rotating speed shearing strategy is selected to be executed according to the heat transfer deviation; the method is characterized in that high-precision viscosity inversion is achieved by eliminating mechanical friction interference, the polymerization degree or the crystallization state is visually monitored on the premise that the closed environment is not damaged, and the problem that the reaction process is invisible in the prior art is solved.

The invention belongs to the related technical field of micro pumps, and discloses a micro pump with a full-surrounding bearing and an electronic device.The micro pump comprises a body, a rotor, a shaft and the full-surrounding bearing, and a rotor cavity is formed in the body; the full-surrounding bearing is integrally formed by stainless steel or ceramic materials and is of a step-shaped structure, an inner hole is formed in one end of the full-surrounding bearing, and a bearing boss with steps is formed at the other end of the full-surrounding bearing. One end of the shaft is fixed on the bottom surface of the rotor cavity, and a ball head is formed at the other end of the shaft and is in point contact with the inner hole; the bearing boss is embedded into the rotor and forms axial limiting with the step; and a non-contact gap is formed between the full-surrounding bearing and the bottom surface of the rotor cavity. According to the integrated full-surrounding bearing, a traditional separation type gasket and the bearing are integrated into an integrated precise part, the perpendicularity deviation of the bearing caused by inclination of the gasket or poor flatness in the assembling process is eliminated, and the problem of collaborative optimization of assembling precision and friction loss in the field of micro pumps is solved.

The invention relates to a sealing device for sealing a rear-opening truck box body against a facade portal during loading and unloading with refrigerated goods. According to the invention, rope pulley guides are arranged at the deflection points of the elastic cords or bands instead of ring guides or pipe bends, wherein the rope pulleys can be located in a sleeve to ensure tracking accuracy. According to the invention, it is advantageous that the roller guidance of the elastic cords minimizes their friction losses, which also significantly accelerates the venting process and minimizes the wear of the elastic cords or tapes, thus improving the overall functionality of the sealing device.

The invention provides an oil return pipe mechanism and a compressor. The oil return pipe mechanism comprises an oil return pipe, a supporting column, a spring, an activation valve plate and a fixed valve plate, and the oil return pipe is communicated with an upper support oil pool, a lower support oil pool and a bottom oil pool. The activation valve plate can slide and is initially attached to the fixed valve plate under the elastic force of the spring; when the pressure of the oil pool rises to a set value, the oil pushes and activates the valve plate to overcome the resistance of the spring, a corresponding oil return channel is opened, and redundant oil is guided back to the oil pool at the bottom. The upper support oil return pipe is opened preferentially to maintain the pressure of the backpressure oil groove, and the lower support oil return pipe is opened to further relieve pressure when the rotating speed is increased, so that self-adaptive oil pressure adjustment under different working conditions is achieved, dynamic disc backpressure is stabilized, friction loss is reduced, and operation reliability is improved. The scroll compressor is reasonable in structural layout, low in machining precision requirement, high in oil return efficiency and suitable for scroll compressors with various rotating speed frequencies.

The utility model relates to the technical field of stretching devices, in particular to a multifunctional copper wire stretching device. According to the technical scheme, the device comprises a box body and further comprises a workbench arranged on the box body, a fixing block is arranged on the workbench, a clamping plate is installed in the fixing block, an electric push rod connected with the clamping plate is fixedly installed on the fixing block, and a treatment box is fixedly installed on one side of the top of the workbench. According to the utility model, the burrs attached to the surface of the stretched copper wire are automatically cleaned and removed, the friction loss and stress concentration points are reduced, the normal stretching operation is prevented from being influenced by the breakage of the copper wire, the working efficiency is improved, meanwhile, the operators are protected, and the safety is improved.

The utility model relates to the field of winding machines, and particularly discloses a coil winding device which comprises a workbench and a winding mechanism, the winding mechanism comprises a tubular wire outlet device and a driving assembly for driving the wire outlet device to rotate, a plurality of balls are arranged at the wire outlet end of the wire outlet device in a rolling mode, and the balls are distributed in the circumferential direction with the axis of the wire outlet device as the center. According to the utility model, the balls are arranged at the port of the wire outlet device, so that the contact area between the coil and the wire outlet can be reduced, the friction between the wire outlet device and the coil can be reduced, the friction loss of the coil in the winding process can be reduced, and meanwhile, the balls are exposed out of the pipe body, so that the wire outlet device is more attractive in appearance. And the phenomenon that the abrasion risk of the wire is increased due to shear stress between the wire and the edge right angle of the wire winding wall in the wire winding process can be prevented.

The application discloses a kind of magnetic suspension ORC units and control method, it is related to low-temperature waste heat power generation technical field;The unit includes magnetic suspension motor, turbine, evaporator, preheater, condenser, liquid storage tank, working medium pump and control system;Magnetic suspension motor is coaxial direct connection with turbine, and constitutes oil-free integrated closed structure;Control system includes PLC controller, four-quadrant frequency converter, turbine inlet regulating valve, hot gas bypass valve and sensor assembly;PLC controller inside preset turbine performance curve and working medium property model, configured to: real-time calculation turbine import and export pressure ratio, query performance curve to determine the best speed target value, through adjusting turbine inlet regulating valve control magnetic suspension motor speed track the target value.The application solves the problems of large mechanical friction loss, high maintenance cost and low variable condition efficiency of existing ORC unit, and realizes efficient and stable operation of the unit under wide operating conditions through collaborative control strategy.

The utility model relates to the technical field of models, in particular to a motorcycle model for power improvement, which comprises a rear wheel swing arm, a driving component is mounted on the inner side of the rear wheel swing arm, and a rear wheel is mounted on the driving component; the driving assembly comprises a model airplane motor, a steel sleeve is fixedly connected to the outer wall of the model airplane motor, a rear wheel is connected to the steel sleeve in a matched mode, a fixing disc is fixedly connected to one end of the model airplane motor through a locking nut, a threaded hole is formed in the side wall of the fixing disc, and a bolt in threaded connection with the threaded hole is inserted into a rear wheel swing arm. According to the motorcycle model for power improvement, the model airplane motor can be directly fixed to the rear wheel swing arm, due to the fact that the model airplane motor is used, power output is better, due to the fact that the model airplane motor directly drives the rear wheel to move through power, friction loss is avoided, the motorcycle model has the advantages of being free of maintenance, high in reliability and simple in structure, and compared with a traditional power output mode, the model airplane motor is more convenient to use. The model airplane motor is lower in position and lower in gravity center, so that the stability of the vehicle during operation can be improved.

The utility model discloses an injection mold for a plastic product with micropores, and relates to the technical field of injection molds. The injection mold comprises a first mold body and a second mold body, the first mold body is provided with a front mold core, the second mold body is provided with a rear mold core, a plurality of first forming areas are arranged in the center of the face, facing the rear mold core, of the front mold core, and a plurality of second forming areas are arranged in the center of the face, facing the front mold core, of the rear mold core. The face, facing the rear mold core, of the front mold core is further provided with a plurality of front jaw openings, front side locks and plug pieces, the front jaw openings, the front side locks and the plug pieces are arranged around the first forming area, and the face, facing the front mold core, of the rear mold core is further provided with a plurality of rear jaw openings, rear side locks and slot pieces. And the plurality of rear jaw openings, the rear side locks and the slot pieces are arranged around the second forming area. According to the injection mold, a triple fine positioning structure is adopted in the mold core part, so that the machining deviation of the mold core and the friction loss generated during mechanical movement of the injection mold are reduced.

The invention provides a thermal balance calculation method and device of a differential mechanism, the differential mechanism, a storage medium and an electronic device.The method comprises the steps that geometric parameters of a planetary gear and a half axle gear of the differential mechanism, the rotating speed of the half axle gear and the input torque are obtained; calculating contact pressure data between the planetary gear and the half axle gear according to the geometric parameters and the input torque; calculating a friction pair bearing characteristic number of the differential according to the contact pressure data; acquiring the friction coefficient in the differential according to the characteristic number of the friction pair bearing; calculating the total friction loss power of the differential according to the friction coefficient, the half axle gear rotating speed and the contact pressure data; and the cooling oil amount needed by the differential in unit time is calculated according to the friction loss total power and the lubricating oil parameters. According to the embodiment, a scheme for accurately calculating the cooling lubricating oil amount of the differential mechanism is achieved, a forced lubrication differential mechanism structure is provided, and the problems of reliability and efficiency caused by cooling lubrication of the differential mechanism in the related technology are solved.