126 results about "Mechanical efficiency" patented technology

The invention provides an axial magnetic flux motor driven RV speed reduction driving assembly which comprises an axial magnetic flux motor unit and an RV speed reducer unit which are connected, the axial magnetic flux motor unit and the RV speed reducer unit are integrated in a shell, the axial magnetic flux motor unit comprises a plurality of stators which are distributed in an annular mode, and the stators are connected with the axial magnetic flux motor unit. A stator is arranged on the rotor, a disc type rotor is arranged on each of the two sides of the stator, a plurality of torsion bars which are uniformly distributed in the circumferential direction are arranged on the rotor facing the side where the RV speed reducer unit is located, the torsion bars are connected with a sun gear of a planetary gear train of the RV speed reducer unit, and an output disc of the RV speed reducer unit is a power output end. The RV speed reduction driving assembly driven by the axial magnetic flux motor has the advantages of being large in starting torque, high in mechanical efficiency, compact in structure, high in overload capacity and the like.

The invention relates to the field of guide bearing bush control, in particular to a signal processing system and method for guide bearing bush clearance automatic adjustment, and the system comprises a clearance metering module, a model boundary module, a fault learning module, a clearance adjustment module and an oil film lubrication module, the model boundary module is used for establishing a dynamic pressure lubrication model of the guide bearing bush and solving the gap of the guide bearing bush, the fault learning module is used for determining the gap adjustment amount, the gap adjustment module is used for adjusting gap distribution, and the oil film lubrication module is used for adjusting lubricating oil injection. And fault identification and automatic fault-tolerant adjustment are carried out, so that mechanical vibration of the bearing is reduced, operation stability of equipment is guaranteed, abnormal bearing bush gaps are avoided, mechanical efficiency of the bearing is improved, invalid power loss is reduced, service life of the equipment is prolonged, thickness and pressure distribution of a lubricating oil film are improved, and performance of bearing turbine equipment is improved.

The invention discloses a traction machine controlled by maximum traction force, which belongs to the technical field of power grid erection, and comprises a base and a traction assembly, and the traction assembly is provided with a traction rope; the traction control end is used for adjusting the traction force of the traction assembly; the traction control end specifically comprises a data acquisition module used for acquiring cable state data; the cable analysis unit is used for generating a traction adjustment demand index according to the cable state data; the traction force adjusting unit is used for acquiring environmental data in cable erection and mechanical efficiency of a pulley and generating a traction force correction coefficient of the traction assembly; the adjustment control module is used for adjusting the current traction force of the traction assembly according to the traction force correction coefficient of the traction machine; whether the current traction force is in the optimal state or not can be accurately judged, the traction force is dynamically adjusted, cable damage or low erecting efficiency caused by improper traction force is avoided, and therefore the safety of the traction machine during cable erecting is improved.

The plunger assembly comprises a plunger, a spring pin and the needle roller bearing, the needle roller bearing comprises an outer ring and a needle roller, a shaft core is arranged in the center of the needle roller bearing, the needle roller is arranged between the shaft core and the outer ring, fixing grooves are formed in the two sides of the plunger, and the spring pin is arranged in the fixing grooves. The two sides of the shaft core are inserted into the fixing grooves, a spring pin is further arranged at one end of the shaft core, a needle bearing cavity for the needle bearing to be installed is formed in the plunger, when the needle bearing rotates at a high speed, a liquid dynamic pressure oil film is formed between the needle bearing and the needle bearing cavity, and the liquid dynamic pressure oil film provides supporting force for the needle bearing. The shaft core and the liquid dynamic pressure oil film jointly support the downward pressure of the needle bearing, and the needle bearing is characterized in that the liquid dynamic pressure oil film can provide supporting force, the liquid dynamic pressure oil film and the shaft core jointly bear the downward pressure of the needle bearing, frictional resistance is reduced, mechanical efficiency is improved, part abrasion is reduced, and meanwhile the supporting stability of the needle bearing is enhanced.

The invention discloses a refrigerant leakage detection method, an air conditioner and a storage medium, relates to the technical field of air conditioners, and discloses the refrigerant leakage detection method which comprises the steps that if the calculated system refrigerant amount of the air conditioner is out of a normal refrigerant use interval, the refrigerant amount of the air conditioner is detected; the total system power of the air conditioner is determined according to the refrigerant mass flow, the inlet and outlet enthalpy value of the compressor, the indoor and outdoor fan power, the electric control power and the mechanical efficiency of the compressor when the air conditioner runs; determining electric load information of the system according to the total power of the system; and when the system electrical load information is out of the normal load interval, it is judged that refrigerant leakage occurs. When the calculated system refrigerant amount is out of the normal use interval, it is indicated that the air conditioner has the refrigerant leakage risk, at the moment, whether refrigerant leakage exists in the air conditioner or not is further judged based on the system electrical load information of the air conditioner, such as theoretical power / current and actual power / current, the accuracy of refrigerant leakage detection is improved, and the working efficiency is improved. And misjudgment of refrigerant leakage is avoided.

An actuator comprises a sun wheel roller (104), a planet wheel roller (102), an auxiliary roller (103) and a fixed gear ring (101), the sun wheel roller (104) is located in the center, and the fixed gear ring (101) is located outside all elements. The auxiliary roller (103) is positioned between the planet wheel roller (102) and the fixed gear ring (101), and the planet wheel roller (102) is in contact with the sun wheel roller (104), the auxiliary roller (103) and the fixed gear ring (101), characterized in that the sun wheel roller (104), the planet wheel roller (102), the auxiliary roller (103) and the fixed gear ring (101) all have a truncated cone geometry or a truncated cone geometry. According to the invention, a transmission device is realized, which provides a simple method for changing the pre-tightening force on the rolling contact element, thereby providing an effective means for improving the torque density and the mechanical efficiency of the transmission device.

According to the technical scheme, the brick stacking machine is characterized by comprising a motor, an output shaft of the motor is fixedly connected with a driving wheel and rotationally connected with a driving rod, the driving wheel is provided with limiting columns on the two sides of the driving rod, the front end of the driving rod is rotationally connected with a rotating rod, and the rotating rod is rotationally connected with a fork rod. The brick stacking machine has the following beneficial effects that the driving wheel rotates to drive the connecting mechanism, so that the fork base horizontally moves on the brick discharging platform to fork horizontal bricks, then bricks are lifted, turned over and moved to the brick stacking platform to be vertically put down and continue to rotate, the fork base is separated from the bricks, the driving wheel rotates and resets, and the operation is repeated; the next brick is vertically placed and pushed to other bricks to horizontally move, the bricks can be vertically stacked on the brick stacking platform, manual operation is not needed, and the mechanical efficiency is high.

The invention provides a hybrid power gearbox and a vehicle, and belongs to the technical field of vehicles. The hybrid power gearbox comprises a shell, a first motor, a second motor, a transmission assembly and a differential mechanism. The shell is provided with a motor cavity, a transmission cavity, a first shaft hole, a second shaft hole, a first oil return hole and a second oil return hole; the height of the bottom surface of the motor cavity is gradually reduced from the first motor to the second motor; an output shaft of the first motor and an output shaft of the second motor extend into the transmission cavity through the first shaft hole and the second shaft hole correspondingly and are in transmission connection with the transmission assembly. The first oil return hole and the second oil return hole are both communicated with the motor cavity and the transmission cavity, the first oil return hole is located in the position, close to the second motor and the bottom face of the motor cavity, of the shell, and the second oil return hole is located in the position, close to the first motor and the bottom face of the motor cavity, of the shell. By the adoption of the hybrid power gearbox, the mechanical efficiency of the hybrid power gearbox is improved.

The metal-based self-lubricating shaft sleeve comprises an outer sleeve and an inner sleeve, the outer sleeve is connected with the inner sleeve, the two ends of the outer sleeve and the inner sleeve are connected in a hasp mode after the outer sleeve and the inner sleeve are unfolded, and an oil groove set and an oil hole set are arranged on the inner wall of the inner sleeve. The oil groove group comprises a linear groove and an oblique groove, the oblique groove and the linear groove are of an integrated structure, and the angle between the oblique groove and the linear groove is an acute angle; the oil hole set comprises a plurality of oil storage holes arranged in an array mode, and the oil storage holes are the same in size and depth. The inner sleeve is provided with the oil groove group and the oil hole group, the linear grooves are circumferentially arranged, and the oil storage holes are distributed in an array manner and can be uniformly distributed on the whole working surface of the bearing, so that a stable oil supply environment and space are provided, the energy loss is reduced, and the mechanical efficiency is improved; the oil groove group comprises a linear groove and an oblique groove, can store a large amount of lubricating oil, can reduce friction and abrasion caused by poor lubrication of the bearing, reduces the operation temperature of the bearing, and prolongs the service life.

The invention relates to the technical field of compressors, in particular to a lead screw linear compressor which comprises a lead screw motor, a motor shell, a piston rod, a connecting barrel, a cooling fan, an air path pipe, an air cylinder body, a water jacket and a cylinder cover. The piston rod is directly connected with the lead screw motor, linear motion output by the lead screw motor is used for pushing the piston rod to move in a reciprocating mode to compress gas, and the piston head in the air cylinder body is used for constructing the first-stage compression chamber and the second-stage compression chamber. Gas paths are arranged in the cylinder cover and the base of the cylinder body around the first-stage compression chamber and the second-stage compression chamber and are communicated with a first-stage exhaust valve and a second-stage air inlet valve, so that second-stage gas compression under the bidirectional action of the piston rod is realized; on the basis that the mechanical structure of the piston compressor is simplified, the mechanical efficiency is improved, maintenance is convenient, meanwhile, the two-way piston rod can achieve two-stage gas compression in the one-time reciprocating process, friction loss is reduced, and stable and safe operation of the piston compressor can be guaranteed.

The utility model belongs to the technical field of down-the-hole drills, and discloses a driving device and a down-the-hole drill. The driving device comprises a hydraulic motor and a speed reducer, the speed reducer comprises a shell, a multi-stage planetary gear train structure and an output shaft, the hydraulic motor is arranged outside the shell, the multi-stage planetary gear train structure is arranged in the shell, and the multi-stage planetary gear train structure comprises a plurality of planet rows which are connected in series; a driving shaft of the hydraulic motor is in driving connection with an input piece of the multi-stage planetary gear train structure, and an output piece of the multi-stage planetary gear train structure is in transmission connection with the output shaft. Multi-stage speed reduction and torque increase of the speed reducer are realized through a multi-stage planetary gear train structure, so that the requirements of different working conditions of the down-the-hole drill can be met only by adopting a high-speed and small-displacement motor, the mechanical efficiency of a hydraulic motor is improved, the working oil consumption of the whole machine is reduced, the oil tank capacity of the whole machine is reduced, and the cost of the whole machine is reduced; in addition, the multi-stage planetary gear train structure is compact in overall structure, high in rigidity and high in impact resistance, and the service life of the driving device is prolonged.

The invention provides a powder metallurgy material and a preparation method thereof, a friction pair part and a suspension gear pump, and belongs to the technical field of powder metallurgy. According to the total mass of the powder metallurgy material being 100 wt%, the powder metallurgy material comprises the following components of 0.4 wt%-0.8 wt% of carbon, 0.8 wt%-1.2 wt% of sulfur, 15 wt%-25 wt% of copper, 1.2 wt%-1.8 wt% of molybdenum, 0.01 wt%-0.06 wt% of chromium, 0.01 wt%-0.06 wt% of nickel and the balance iron. The powder metallurgy material disclosed by the invention has the advantages of self-lubricating property, low friction coefficient, low energy consumption and high mechanical efficiency of a product assembly. Compared with a copper alloy material in the prior art, the powder metallurgy material is light in weight; the cost of raw materials is low, and the cost of the suspension gear pump can be reduced; in addition, the manufacturing process of the powder metallurgy material is simple, the production efficiency is high, and the cost of friction pair parts and the suspension gear pump can be reduced.

The invention relates to a gas compressor performance prediction method and device, equipment and a medium. The method comprises the following steps: acquiring multi-dimensional data of an internal flow field and an oil supply loop, and generating an operation state vector through time-space alignment, multi-source fusion and redundancy elimination; utilizing a convolutional neural network to extract dynamic coupling features, and combining a feature analysis rule and a long-short term memory network to obtain an airflow dynamic change trend; then airflow characteristics are extracted, a mechanical efficiency estimated value is obtained through a long short-term memory network in combination with oil supply parameters, and meanwhile a deviation correction coefficient is calculated through a support vector machine model; and finally, adjusting an estimated value by using a correction coefficient, evaluating risks by combining an oil pressure fluctuation mode and an airflow state, and optimizing model parameters to generate a performance prediction path. By adopting the method, the problem that the dynamic coupling of the flow field and the oil supply loop is difficult to capture can be solved, support is provided for fault early warning and maintenance decision, the risk of unplanned shutdown can be reduced, and the operation efficiency and safety of equipment are improved.

The present application provides a kind of swing hydraulic cylinder, including cylinder barrel, drive shaft is equipped in the cylinder barrel, drive shaft is equipped with vane between cylinder barrel, vane is connected with drive shaft, torque output block is equipped on the vane, torque output block is connected with drive shaft by passing through cylinder barrel and vane, fixed block is also equipped in the cylinder barrel, fixed block is connected with the inner wall of cylinder barrel, first oil cavity is equipped above the fixed block, second oil cavity is equipped below, first oil nozzle and second oil nozzle are equipped on the outside of cylinder barrel, first oil nozzle is communicated with first oil cavity, second oil nozzle is communicated with second oil cavity, front cover is equipped in one end of cylinder barrel, rear cover base is equipped in the other end; It can improve the output torque and mechanical efficiency of swing hydraulic cylinder greatly shortens the force arm of hydraulic cylinder output shaft, according to need, the number of vane can be selected, so that different swing angle and torque are obtained, the scope of application is wide, and it is suitable for popularization and use.

This invention discloses an intelligent variable frequency control system for a centrifugal pump operating under varying conditions, belonging to the field of marine engineering. It includes: a variable frequency controller for controlling the operation of the pump's variable frequency motor; a pump driven by the variable frequency motor; a ship draft detection sensor for detecting the water level outside the ship's hull near the pump's location; a pump outlet pressure detection sensor for detecting the pump outlet pressure; and a pump inlet pressure detection sensor for detecting the pump inlet pressure. Based on the signals collected by the sensors, the variable frequency controller calculates the actual operating head of the pump and, according to the correspondence between the actual operating head and the current operating frequency, uses a fuzzy algorithm to deduce a set frequency, controlling the pump to operate at the set frequency. This invention achieves intelligent frequency regulation and speed change through a fuzzy algorithm, resulting in smooth and stable variable frequency operation, ensuring the pump always operates along the optimal mechanical efficiency curve, saving energy, minimizing impact on the power grid, and extending equipment lifespan.

The present invention discloses an electric oil pump assembly for oil cooling a motor and a controller, comprising a rotor group, an oil inlet and an oil outlet, wherein the rotor group consists of an inner rotor and an outer rotor, the motor is placed above a mechanical oil pump, the motor comprises a stator assembly, a rotor assembly and a motor housing, the stator assembly is placed in the motor housing, the rotor assembly is placed in the stator assembly, the controller is placed on the motor, the controller comprises a controller housing, the controller housing has a bottom end surface, the cooling oil circuit comprises a first oil channel, a second oil channel, a third oil channel, a fourth oil channel and a fifth oil channel, and the outlet of the cooling oil circuit A is communicated with the oil inlet; the present invention eliminates the rotating oil seal for dynamic sealing on the drive shaft of the electric oil pump module, which not only reduces the cost of the entire system, but also reduces the friction power loss between the oil seal and the shaft, improves the mechanical efficiency of the electric oil pump, and also improves the service life of the electric oil pump.

The utility model discloses a high leakproofness die structure for aluminum alloy semi-solid die casting, which comprises a fixed die and a feeding assembly, the middle of the bottom of the right side of the fixed die is provided with the feeding assembly, the edge of the right side of the fixed die is fixedly connected with a first fixed block, and the middle of the right side of the first fixed block is provided with a groove. A first fixing block, a sliding block, a connecting rod and a spray head are arranged, the first fixing block is installed on the right side of a fixed mold, the sliding block is inserted into the middle of the first fixing block, the connecting rod is arranged on the outer side of the sliding block, and the spray head is arranged at the other end of the connecting rod and faces the inner side of the left side face of the fixed mold. In the reciprocating motion that the movable die moves close to and away from the fixed die, lubricating oil is evenly smeared on the piston rod, the friction resistance of moving of the movable die is reduced, the mechanical efficiency is improved, the sealing performance of the piston rod is enhanced, and oxidation and other corrosion are prevented.

The underwater power generation device comprises a support, an impeller, a plurality of first magnetic parts, a gear ring and a plurality of second magnetic parts, and the support is provided with a mounting opening. The impeller is arranged in the mounting opening, and a gap is formed between the impeller and the support. The multiple first magnetic parts are evenly arranged on the side, facing the support, of the impeller at intervals, and the adjacent first magnetic parts are opposite in magnetism. The support is sleeved with the gear ring, and a gap is formed between the gear ring and the support. The multiple second magnetic parts are evenly arranged on the side, facing the support, of the gear ring at intervals, and the adjacent second magnetic parts are opposite in magnetism. When the impeller is impacted by water flow, the impeller rotates relative to the support, the gear ring rotates along with the impeller through interaction of the first magnetic part and the second magnetic part, the impeller and the gear ring are designed in a magnetic suspension mode, the underwater power generation device can be started at a low speed, energy loss in the transmission process can be greatly reduced, and the mechanical efficiency is improved.

The enthalpy-increasing rotor type compressor comprises a machine shell with a containing space, a pump body assembly assembled in the containing space and an enthalpy-increasing assembly located on the outer side of the machine shell, the pump body assembly is provided with an enthalpy-increasing hole, a through hole corresponding to the enthalpy-increasing hole in position is formed in the machine shell, and the enthalpy-increasing assembly is located on the outer side of the machine shell. The enthalpy increasing assembly comprises an enthalpy increasing injection needle, the enthalpy increasing injection needle is inserted into the enthalpy increasing hole through the through hole, an annular gap is formed between the enthalpy increasing injection needle and the enthalpy increasing hole, and a sealing ring is arranged in the annular gap so that the annular gap can be sealed. The mechanical efficiency of the pump body is improved, the energy efficiency of the compressor is improved, the abnormal conditions that the pump body assembly is stuck and the compressor cannot operate are prevented, and the one-time passing rate and the long-term reliability of the pump body assembly are improved.

A rolling disc shaft is rotatably installed in an outer shell, an upper driving disc is arranged on the upper portion of the rolling disc shaft, a lower guiding disc is arranged on the lower portion of the rolling disc shaft, acting sections and retreating sections are alternately arranged on the circumferential side wall of the upper driving disc, a roller path is formed in the lower guiding disc, and a plurality of rollers are connected into the roller path in a matched mode. The rollers are connected with one ends of the connecting rods, the other ends of the connecting rods penetrate through the side wall of the outer shell and then are connected with pistons, the connecting rods drive the pistons to reciprocate in the corresponding air cylinders, the air cylinders are located on the same plane, and linear bearings are arranged at the joints of the connecting rods and the outer shell. The acting section of the upper driving disc drives the pin rollers to move in the main roller path so as to achieve linear acting of the connecting rod, and the auxiliary roller path drives the connecting rod subjected to linear acting through the pin rollers to achieve retreating. Through the rolling contact arrangement of the rollers and the raceways, the mechanical efficiency is effectively improved compared with a traditional crank connecting rod mechanism, and meanwhile energy loss can be reduced.

A method, device, equipment, and storage medium for warning faults in an electric drive thermal management system are disclosed. The method includes: importing acquired front and rear motor power, front and rear motor mechanical efficiency, onboard charging system power, and thermal management actuator data into a trained deep network learning model to output a predicted radiator outlet temperature; determining the difference between the predicted radiator outlet temperature and the onboard charging system inlet temperature; and reporting a fault code if the difference exceeds a range threshold. Outputting the predicted radiator outlet temperature eliminates the need for a radiator outlet temperature sensor in traditional solutions, reducing hardware costs; and determining the difference between the predicted radiator outlet temperature and the onboard charging system inlet temperature. If the difference exceeds a range threshold, a fault code is reported, notifying the user to visit a repair shop for prompt repair and troubleshooting.

The application relates to the field of oil drilling, and discloses a drill pipe centralizer. The drill pipe centralizer comprises a body, a supporting arm arranged on the outer wall surface of the body, and a contact surface arranged at the top of the supporting arm and used for contacting a well wall. The cross section of the contact surface on the vertical surface in the axial direction of the body is arc-shaped. The contact surface of the supporting arm is in contact with the well wall through the arc surface, the scraping between the contact surface and the actually uneven well wall is reduced, the accumulation of the torque on the drill pipe and the torque fluctuation impact are effectively reduced, the problem that the drill pipe centralizer causes the accumulation of the torque on the drill pipe is solved, the torque on the drill pipe is reduced, the drill bit is protected, and the mechanical efficiency of the drill pipe is improved.

A partial stroke pump or motor includes a piston coupled to a rotating shaft to evacuate a fluid within a cylinder during an upstroke. A latching check valve includes an actuator piston that is displaceable within a center cavity to bypass a blocking member in a bypass state. The actuator piston is driven by a latch supply line. A spool of a rotary valve selectively couples one of the low and pilot pressure supplies to the latch supply line over different timing angle ranges of the rotating shaft. Coupling of the pilot pressure to the latch supply line causes the bypass state. When operating as a pump, the bypass state causes the pressure in the cylinder to fall below the high pressure during part of the upstroke. When operating as a motor, the bypass state allows the fluid to be evacuated from the cylinder during the upstroke.

An engine-assisted drive unit with a built-in 6-speed automatic transmission in a bicycle wheel hub is disclosed. A small, electronically fuel-injected 4-stroke internal combustion engine, a planetary gear automatic transmission, a starter motor and generator, and an oil lubrication, cooling, and exhaust purification system are integrated into the hub housing within the rear wheel rim of a standard bicycle. The flattened hub housing is located inside the rear fork of the bicycle frame, maintaining the original bicycle shape in its structure and appearance. The internal combustion engine auxiliary power unit employs a concentric circle intake and exhaust valve SOHC valve train, improving intake efficiency by 100%. The engine boasts high power density and is compatible with using biosynthesized renewable fuels such as methanol as a power source. The 6-speed automatic transmission module is integrated into the standard bicycle, providing smooth transmission, high mechanical efficiency, and advanced technology. Its simple appearance and flexible construction meet the lightweight requirements of riding assistance power equipment; it achieves the function and purpose of efficient and easy driving, making it suitable as a personal lightweight transportation tool for both urban and rural areas.

The invention discloses a helical tooth transmission speed reducer for an escalator. The helical tooth transmission speed reducer comprises a box body, the motor is arranged in the box body; the input assembly comprises an input shaft, outer teeth are arranged on the rear portion of the input shaft, and the front end and the rear end of the input shaft extend out of the box. The middle assembly comprises a middle shaft and a middle gear, outer teeth are arranged on the front portion of the middle shaft, and the middle gear is fixedly arranged on the rear portion of the middle shaft. The output assembly comprises an output shaft, outer teeth are arranged on the front portion of the output shaft, and the rear end of the output shaft extends out of the box body. Wherein outer teeth of the input shaft, outer teeth of the intermediate shaft, the intermediate gear and outer teeth of the output shaft are bevel gears, the motor is connected with the front portion of the input shaft and inputs power, the intermediate gear is meshed with the outer teeth of the input shaft, and the outer teeth of the intermediate shaft are meshed with the outer teeth of the output shaft. Under the condition that high mechanical efficiency, high reduction ratio and large output torque are guaranteed, through meshing of the bevel gears, noise is low, the structure is simple, cost is low, and the service life cycle and maintenance of products are short.

The utility model provides a stator frame, a motor stator, a rotating motor and a carrier, the outer surface of the stator frame is provided with a winding groove extending around the circumference of the stator frame, the side wall of at least one side of the winding groove is provided with an inclined transition part, the inclined transition part is provided with a guide surface, and the guide surface is arranged towards the bottom wall of the winding groove and the opposite side wall. And the side wall of the corresponding side of the winding groove is connected between the guide surface and the bottom wall of the winding groove. Compared with a flat bottom type winding groove, the winding groove of the stator framework provided by the utility model has more winding space, and compared with an arc bottom type winding groove, the fall between the outer end of the winding groove and the opening at the inclined transition part is smaller, so that an inductance coil is easier to approach to the corner of the winding groove during winding; and the straight side wall between the guide surface and the bottom wall of the winding groove can support the inductance coil to prevent the edge winding from collapsing, so that the fullness rate of the winding groove is improved, and the service life and the mechanical efficiency of the rotating motor are ensured.

The application provides a design method of high-efficiency submersible flow pusher, which comprises the following steps: determining the diameter D of the impeller and the axial velocity V at the disc surface according to the flow pushing distance and the flow disturbance diameter ′ ; calculating the flow at the disc surface per second and per hour and the thrust T of the impeller; preliminarily selecting the rotating speed n of the impeller; calculating the power required by the flow pushing fluid and estimating the power of the power system according to the mechanical efficiency N%; selecting a suitable power system; if the rotating speed of the power system cannot match the rotating speed n of the impeller, repeatedly modifying the rotating speed n of the impeller until the rotating speed of the impeller is the same as the rotating speed of the power system, so that the impeller and the power system can be completely matched; and finally designing and fixing the installation and fixing device. The axial velocity at the disc surface of the impeller and the thrust per unit area at the disc surface are taken as the design indexes, and the design method of the submersible flow pusher is first proposed. The submersible flow pusher designed by the method has large water flow speed and large flow pushing flow, and the power consumption is lower.

The present invention relates to a system designed to enhance the thermomechanical efficiency of internal combustion engines while reducing emissions, noise, and maintenance requirements. The system comprising a booster, soft ferrite coils, a magnetic pick-up, and a feedback mechanism increases energy density within the engine. This enables operation on lean fuel mixtures, continuous removal of carbon deposits, improved combustion, and minimized pressure drops, thereby enhancing efficiency and reducing wear. The system reduces noise, vibrations, and particulate emissions under constant or variable engine conditions. By optimizing fuel consumption and reducing back pressure, it promotes cleaner, quieter, and sustainable engine operation while improving catalytic converter lifespan and achieving overall performance gains.

This invention discloses a high-mechanical-efficiency multi-start worm gear reducer, relating to the field of multi-start worm gear reducers. It includes a protective housing, with a support frame fixedly connected to the upper end of the protective housing. A storage box is fixedly connected to the upper end of the support frame, and a connecting pipe is fixedly connected to the lower center of the storage box. Through the arrangement of the storage box and the adjusting box, when the lubricating oil between the upper worm gears is exhausted during operation, an adjusting roller is pushed. The adjusting roller slides within a sliding groove, and air from the factory enters the connecting pipe through a vent pipe. Under the conditions of height and air pressure, the lubricating oil in the storage box is squeezed out, and one end of the feed pipe drips the lubricating oil onto the first worm gear reducer shaft. The cooperation between the storage box and the adjusting box allows lubricating oil to be added between the first worm gear reducer shaft and the drive worm shaft, thereby reducing the probability of damage to the worm gears during operation.

The invention discloses a frontier defense robot dog with an automatic obstacle avoidance function, and relates to the technical field of intelligent security equipment, the frontier defense robot dog with the automatic obstacle avoidance function comprises a control base internally provided with a storage battery, and the left side and the right side of the control base are fixedly connected with connecting frames; according to the robot dog disclosed by the invention, a three-degree-of-freedom kinematic chain is constructed through vertical lifting of an unfolding push rod, horizontal steering of a bevel gear set and leg swinging driven by double servo motors, so that the robot dog has a'lifting-rotating-stepping 'composite motion capability; compared with the limitation that a wheel type structure depends on friction force for driving, the four-foot mechanism makes point contact with the ground through the cushion blocks, the lever principle is used for achieving pedaling for power generation, the four-foot mechanism can stably advance on low-adhesion road surfaces such as muddy road surfaces and gravel road surfaces, the mechanical efficiency is remarkably improved, and the physical adaptability to complex terrains is remarkably improved.