123 results about "Kinetic energy" patented technology

The present application relates to the technical field of regenerative braking, in particular to a mine truck energy recovery torque rate control method based on vehicle mass and transmission parameters, comprising the following steps: collecting vehicle operation data to construct a time series data set, calculating kinetic energy response sensitivity index and correcting the maximum allowed rising slope, extracting elastic power difference value and oscillation component based on second-order differentiation, and generating torque rate control instruction. In the present application, the influence degree of the current load state of the vehicle on the kinetic energy recovery is quantified, and the maximum allowed rising slope is dynamically corrected accordingly to accurately adapt to different load conditions. The elastic power difference value of the transmission system is extracted by using the second-order differentiation of power, and the oscillation component is separated. When the oscillation is detected to exceed the threshold, the dynamic damping correction value is calculated to down-regulate the limit parameter, which not only ensures the smoothness of torque establishment under heavy load conditions to avoid mechanical damage, but also effectively suppresses the elastic torsional vibration of the transmission system.

The present application relates to a kind of inertial energy storage methods.A kind of inertial energy storage method uses inertial energy storage device, with the cavity of fluid being contained, kinetic energy recovery device and the transmission member driven by the pressure of fluid in cavity, the method includes: fluid in cavity is accelerated;Fluid in cavity is applied deceleration resistance by kinetic energy recovery device, so that fluid in cavity is decelerated;During the deceleration of fluid in cavity, the kinetic energy of fluid deceleration is recovered by kinetic energy recovery device;Wherein, using the acceleration effect of fluid in cavity, the pressure of fluid in cavity is increased from first pressure to second pressure according to the velocity variation rate and movement state of fluid;Before the step of kinetic energy recovery device recovery kinetic energy ends, additionally by transmission member, the fluid pressure energy generated by fluid under the action of second pressure is obtained, wherein, first pressure is less than second pressure.

This application provides a method, apparatus, device, and medium for transient torque control of a vehicle. The method includes: upon detecting that a vehicle has passed through a transmission gap region, determining a reference angle radian corresponding to the vehicle passing through the transmission gap region based on a first angle radian rotated by the motor and a second angle radian rotated by the electric drive output terminal; upon detecting that the vehicle has re-entered the transmission gap region, determining the corresponding real-time angle radian; determining a target motor angular velocity corresponding to the vehicle being in the transmission gap region based on the radian deviation value between the reference angle radian and the real-time angle radian; and determining a target motor torque based on the target motor angular velocity and the current actual motor angular velocity, and performing torque control. This application reduces the gear impact kinetic energy during drive reversal by performing closed-loop speed control on the motor torque in the transmission gap region, thereby reducing the impact of the transmission gap region on vehicle drivability during transient torque transitions.

A kind of automobile engine suspension bracket detection device, including, the middle two sides of the bottom plate upper end face are connected with fixed component, four vibration enhancement components are connected to the bottom plate lower end face four corners, two The vibration component is connected to the bottom plate upper end face two sides, two sliding seats are slidably connected in the T-shaped sliding groove, and two The suspension bracket is connected on the sliding seat.The utility model has the advantages of being set as separate component, by setting vibration component and vibration enhancement component, by starting double-shaft motor to drive eccentric disc to rotate, drive bottom plate to vibrate, while vibrating, bottom plate will kinetic energy be transferred to telescopic link and spring, by spring continuous compression rebound, simulate the scene of automobile vibration, relative to detection on car, greatly reduce the tediousness of detection, improve detection efficiency.

This application discloses an auxiliary braking device, method, system, medium, equipment, and vehicle. The auxiliary braking device includes: a housing with a cavity formed inside; a drive shaft, connected to the wheel and at least partially disposed within the cavity; an electromagnet disposed within the cavity; and a magnetorheological fluid filling the cavity. The auxiliary braking device is configured to utilize the internal frictional adhesion force generated by the magnetorheological fluid moving within the cavity to convert the kinetic energy of the vehicle into the internal energy of the magnetorheological fluid, thereby achieving auxiliary braking. The auxiliary braking device provided by this invention achieves this by using the adsorption and release of the magnetorheological fluid under the control of a magnetic field. During normal driving, it does not affect the vehicle's power transmission; when deceleration is required, it utilizes the internal friction of the magnetorheological fluid itself to convert kinetic energy into internal energy, thus achieving an auxiliary braking effect. This device has a simple structure and is easy to operate, and can greatly protect the safety and reliability of the vehicle's main brake disc, effectively eliminating or reducing the occurrence of brake failure during long-term downhill driving or continuous deceleration.

The application discloses a mechanical equipment safety interlock control method based on multi-sensor information fusion. The method collects the motion position, speed, acceleration, force and torque data of the mechanical equipment, and performs time alignment, amplitude normalization and short-time abnormality filtering, estimates the kinetic energy, potential energy and friction energy consumption of each energy node, and constructs an energy transmission matrix between nodes; fusion sensor data and matrix information extracts four types of abnormal characteristics of short-term energy surge, local energy reflection, friction energy abnormal fluctuation and energy accumulation accompanied by micro-vibration, and predicts dangerous energy states including single and complex dangerous energy states accordingly; based on the prediction of dangerous energy state and the current running state of the equipment, the safety interlock action is adaptively triggered, the driver torque, current amplitude limiting and active damping are dynamically adjusted, and the control of backflow energy and accumulated energy along the virtual dissipation path is realized. The method is suitable for high dynamic mechanical equipment and can realize fine safety interlock control of multiple nodes and multiple abnormal characteristics.

This application relates to the field of vehicle control technology, and provides a vehicle control method and vehicle terminal for a motion sickness relief mode. When the target vehicle is in motion sickness relief mode, this application not only reduces at least a portion of the gain ratio of the accelerator pedal signal to the motor output torque, suppressing the rate of change of acceleration during acceleration, but also allocates a portion of the deceleration generated by kinetic energy recovery as mechanical braking, suppressing the rate of change of acceleration during deceleration. Compared to limiting acceleration itself based on a fixed acceleration threshold, this application dynamically adjusts the motor output torque and the intensity of kinetic energy recovery to limit the impact of acceleration, thereby preventing abrupt changes in acceleration and making the acceleration change smoother, thus improving the relief effect for motion sickness sufferers.

The application relates to the technical field of roof protection frames, and discloses a forklift anti-falling roof protection frame with a multistage buffer structure, which comprises a vehicle body, four connecting blocks are fixedly connected to the outer surface of the vehicle body, the upper surfaces of the connecting blocks are all fixedly connected with stand columns, a fixing frame is arranged above the vehicle body, and the bottom surface of the fixing frame is fixedly connected with the four stand columns. The forklift anti-falling roof protection frame with the multistage buffer structure is provided with a first-stage hydraulic buffer, a second-stage honeycomb aluminum energy absorption box and a third-stage elastic damping layer, so that in the use process of the device, part of impact force can be absorbed through the compression deformation of the third-stage elastic damping layer, then the remaining kinetic energy is gradually conducted to the honeycomb aluminum energy absorption box, half of the energy is absorbed through the plastic deformation of the hole wall, the remaining energy is finally dissipated by the plunger cylinder through the oil throttling effect, and therefore, the device can greatly reduce the energy conducted to the driver when the roof protection frame is impacted.

The present application belongs to the technical field of anti-collision wall, and particularly relates to an energy-absorbing assembled anti-collision wall and a mounting method thereof. The anti-collision wall comprises a base, a wall body slidingly connected to the base, an elastic energy-absorbing assembly arranged on a collision surface of the wall body, a damping energy-dissipating assembly connecting the base and the wall body, and a climbing-preventing intercepting assembly integrated in the wall body. The system is equipped with a multi-source data acquisition and processing assembly, and through spatiotemporal data fusion of far-field radar prediction and near-field contact sensing, an impact feature vector is constructed and a hierarchical control instruction is generated. In operation, for low-energy-level impact, the elastic assembly is used for resetting and energy absorption; for medium and high-energy-level impact, the wall body is controlled to slide, and the kinetic energy is dissipated through the variable-damping mechanism of the damping energy-dissipating assembly; and for high-risk climbing danger, the climbing-preventing intercepting assembly is driven to instantaneously expand and lock. The present application effectively solves the problems that the traditional guardrail cannot simultaneously consider buffering and rigid blocking, and the large vehicle climbing interception fails.

The utility model discloses a bubble type water level gauge fairing relates to water level gauge fairing technical field, including the cover body, the top of cover body swing joint has the top cover, the inside bottom fixedly connected with the connecting pipe of top cover, and the connecting pipe is connected with the top cover through a plurality of connecting rods, the inside rotatable connection of top cover has the movable block, the bottom rotatable connection of cover body has the one end of connecting piece through the axle. The utility model discloses a cover body and top cover are connected, and the outer cover shell is also connected with the top cover, and then the installation of fairing is completed, so when the outside gas can enter the top cover through the air inlet, make the gas push turbine and movable block synchronous rotation, then the airflow energy is converted into mechanical kinetic energy, make the connecting piece drive the rotation of brush between cover body and outer cover shell, thereby realize the surface hole cleaning of cover body and outer cover shell, ensure the unobstructed of hole, reduce the airflow instability and measurement error caused by the blockage, guarantee the accuracy and reliability of water level monitoring data.

The utility model discloses an automatic lubricating device of electric door slide rail, and relates to the technical field of electric door slide rail; the utility model discloses a slide rail, two symmetrical chutes are seted up on the slide rail, the third connecting hole is seted up in the arbitrary one chute, the first installation slot is seted up on the slide rail, the one end of first installation slot inboard wall is close to the third connecting hole and is seted up with the connecting groove, the fixed block is installed in the third connecting hole, the utility model discloses the automatic lubrication through mechanical linkage, and the advantage is remarkable, utilizes the kinetic energy of slider to move to the top, through the force link and drives the piston, rubber bowl pressurization, makes the lubricating oil quantitative extrusion through the connecting hole, does not need manual intervention, can complete lubrication every time and moves, guarantees that the slide rail and the moving block keep good lubrication state continuously, reduces the friction wear, prolongs the life.

This invention discloses a road vehicle kinetic energy recovery and power generation system, comprising a housing, a main shaft assembly, a load-bearing component, a generator, and a cover plate. The main shaft assembly includes a main shaft unit, with multiple main shaft units arranged in series. Each main shaft unit includes a unit base, a main shaft cover plate, a main shaft, and a one-way swing assembly. The main shaft is rotatably mounted on the unit base, and the main shaft cover plate is mounted on the unit base. The main shaft and the one-way swing assembly are circumferentially fixed. The load-bearing component is mounted on the main shaft cover plate and is displaced downwards under external loads, driving the one-way swing assembly to swing. The generator input shaft is connected to the output end of the main shaft assembly. The cover plate is mounted on the housing. This invention converts the excess kinetic energy generated by vehicle rolling and vibration into mechanical energy, which is then converted into electrical energy by the generator, achieving waste energy recovery and utilization, thus saving energy and protecting the environment. The components are compactly assembled, the structure is highly reliable, and it has good practical value and prospects for promotion.

The utility model relates to the technical field of lift door protection, and disclose a kind of multiple lift door anti-breaker, applied to multiple lift door body, the outer frame is equipped in multiple lift door body outside;The novel scheme is effectively detected whether the running speed of steel wire rope is normal by setting laser speed sensor body, when steel wire rope is broken, laser speed sensor body is opened by controller control solenoid valve body, at this time, the high-pressure gas in high-pressure gas cylinder is rapidly inflated to air bag assembly by corrugated transmission pipe, air bag assembly after inflation rapidly unfolds and effectively supports multiple lift door body in the process of falling, instantaneous impact absorption, reduce kinetic energy, while the reaction force of air bag assembly is effectively dispersed by several hydraulic dampers body Absorption, reduce the possibility of damage of limiting frame and multiple lift door body on its upper end, since air bag assembly and limiting frame can be quickly disassembled, thereby improving the convenience of overhaul replacement.

The utility model provides a kind of Apli leg type impact energy-absorbing protective device for automobile pedestrian protection, including box, box inside hollow formation accommodating cavity, the side of box is equipped with the impact port that is communicated with accommodating cavity, the hook in accommodating cavity is set to the top of box, the side wall of box is set to first protective pad back to impact port, the bottom of box is set to second protective pad, the top of box is set to third protective pad. By setting box, the flight distance of Apli leg type after being impacted can be limited, which is limited in accommodating cavity, after the flight distance is reduced, the landing point deviation rate caused by flight angle is reduced, at the same time, by setting first protective pad on the side wall back to impact port, second protective pad and third protective pad are respectively set on the bottom and top of box, different angle protective measures can be formed in the direction away from impact port, after Apli leg type is impacted and flies, kinetic energy is absorbed, Apli leg type is protected from damage.

The utility model discloses a fixed length pipe cutting device for seamless steel pipe processing relates to the technical field of seamless steel pipe processing, including the workstation, the workstation's upper portion is provided with cutting assembly. The utility model has the beneficial effect that: through the one end of steel pipe and clamping into the outer side of runner, positioning sleeve fills the gap between runner and steel pipe inner chamber at this moment, forms the spacing to steel pipe, in the cutting process, motor starts and drives the disc rotation, and the disc rotation drives the push block to slide in the vertical groove, to make transmission block will kinetic energy transmission, through the connecting axle with runner synchronous rotation, make the steel pipe rotation adjustment cutting surface in the outer side of positioning sleeve, and multiple pulleys in the inside of clamping block guarantee that the steel pipe can smoothly complete the rotation, realized when cutting the steel pipe of diameter is relatively thick, need not to carry out the intervention and consume additional adjustment time, guarantee the continuity of cutting process, thereby improved the efficiency of steel pipe cutting.

This utility model discloses a fishway monitoring device with adaptive flow velocity adjustment, including a channel shell with an inlet and an outlet at its two ends. Cameras are installed on the top and sides of the channel shell. A transparent side plate is fixed inside the channel shell on one side. A lifting box is installed on the back of the outlet end, and an impeller is installed inside the lifting box. A blocking net is fixed at the inlet of the lifting box, and an acceleration outlet is opened on the bottom of the outlet end. A sealing plate is installed at the location of the acceleration outlet. Lifting components are installed on both sides of the channel shell. When the water flow velocity is abnormal, the lifting box quickly sinks through the lifting components, so that the high-speed water flow can only pass through the inclined acceleration outlet at the bottom. At this time, the impeller encapsulated in the lifting box can rotate forward to accelerate or reverse to decelerate as needed. When rotating forward, the impeller pushes the water flow axially towards the acceleration outlet, increasing the flow velocity and solving the problem of fish clustering. When rotating in reverse, a reverse vortex is formed to consume kinetic energy, and the flow velocity is reduced to avoid the problem of image blurring.

The utility model discloses a train crash energy dissipation is with anti -climber, related to anti -climber technical field, including the toothed plate, the outer surface fixed mounting of toothed plate has the guide cylinder, the inside fixed mounting of mounting panel has the energy dissipation coil, the inside of energy dissipation box is provided with the energy -absorbing mechanism of preventing damage, and the energy -absorbing mechanism includes the reinforcing plate fixed mounting in the both sides of mounting panel. The train crash energy dissipation is with anti -climber, when the train collision occurs, utilize the toothed plate and the car body of collision train of setting and connect, prevent the derailment of train by the greater impact force, protect the safety of the passenger, and utilize the guide cylinder and energy dissipation box absorption energy when impacting, thereby reduce the impact force of producing, reduce the damage degree of train, improve the safety of train, reduce the cost of maintenance, through the guide cylinder drive fixed plate movement, and fixed plate drive buffer rod moves, utilize the spring one relief impact force of setting, thereby absorb part kinetic energy.

The present application relates to the technical field of inclined shaft tunneling construction, in particular to an adjustable slag sliding reduction device for inclined shaft vertical curve TBM, comprising: inclined slag sliding groove, mounting groove, adjustable reduction assembly, slag sliding protection frame, triangular mounting plate, edge bottom plate, reduction baffle, rotating shaft, adjusting groove, circular arc rack, gear motor and adjusting gear; the reduction baffle with the angle-adjustable structure is hinged to the edge bottom plate through the rotating shaft to adjust the unfolding angle, so that the kinetic energy of high-speed rock slag is attenuated after impacting the surface of the reduction baffle, the staggered distribution of the baffle forms multiple buffer zones to make the rock slag path zigzag, the synchronous cooperation of the slag blocking window restricts the falling of the splashing particles into the groove, and finally the rock slag is discharged into the inclined slag sliding groove at a controllable speed, which eliminates the splashing injury of rock slag to the staff and equipment, prolongs the continuous operation time of the equipment, and ensures the reliability of the function.

This invention discloses an emulsifier with a passive rotating turbulence component, belonging to the field of fluid mixing. It includes a pipe body, within which a flow-guiding rotating component, an annular baffle, and a snowflake turbulence component are coaxially arranged along the fluid flow direction. By setting a flow-guiding rotating component consisting of a two-stage flow-guiding component and a passively rotating swirl impeller coaxially arranged within the pipe body, the axial flow of the fluid is transformed into a deflected flow with a tangential velocity component. This improves the starting sensitivity of the swirl impeller and the efficiency of fluid kinetic energy conversion, enabling the swirl impeller to achieve stable rotation without external power, relying on the fluid's own kinetic energy. The original axial flow is transformed into a composite flow field coupling axial and rotating flows, significantly enhancing the local shear stress and flow field complexity, promoting the efficient breaking down and refining of large oil droplets. Combined with the multi-stage snowflake turbulence component after the flow-guiding rotating component, the emulsification effect is improved.

This invention discloses a dual-speed-regulating damping valve and a hydraulic system including it, relating to the field of hydraulic control technology. The valve includes a valve body with two independent channels: a first channel and a second channel; an inlet port on the valve body connected to one end of the first channel; a first working port on the valve body connected to the other end of the first channel; a return port on the valve body connected to one end of the second channel; a second working port on the valve body connected to the other end of the second channel; a first damping orifice located in the first channel near the inlet port; and a first expanded-diameter volumetric cavity located in the first channel downstream of the first damping orifice, with an inner diameter larger than the orifice diameter of the first damping orifice. This invention, through the combined effect of two throttling damping cycles and one volumetric speed reduction, converts the kinetic energy of the hydraulic oil into heat energy, reducing the extension and retraction speed of the side support cylinder, eliminating the impact of the piston on the cylinder seat, and extending the service life of the side support cylinder.

This invention relates to the field of reciprocating pump testing, specifically a jet energy dissipator and an adjustable pressure ultra-high pressure reciprocating pump testing system. The jet energy dissipator includes an inner sleeve through which the jet passes. One end of the inner sleeve is coaxially connected to a high-pressure water inlet via a throttling nozzle, and the other end is connected to a low-pressure water outlet. Energy dissipation cylinders are evenly spaced along the axial direction within the inner sleeve to divert the fluid. Each energy dissipation cylinder includes a jet cylinder coaxially arranged with the inner sleeve. Diverting blades are evenly arranged circumferentially on the outer wall of the jet cylinder. The inner sleeve, the jet cylinder, and the diverting blades enclose and form multi-component diversion cavities. This invention provides a jet energy dissipator that reduces the velocity of the high-speed water jet during ultra-high pressure reciprocating pump testing, significantly eliminates jet kinetic energy, avoids damage to the experimental system from the high-speed jet, improves experimental measurement accuracy, and ultimately achieves pressure build-up and precise pressure regulation during ultra-high pressure pump testing.

The application discloses a buffer type integrated pneumatic control valve, and solves the technical contradiction between response speed and rigid impact of a traditional pneumatic control valve; the pneumatic control valve comprises a valve body, a valve core assembly, a reset spring and a buffer mechanism, the valve core assembly is arranged in the valve body in an axial moving mode, the reset spring provides a reversing reset driving force, and the buffer mechanism is arranged between the valve body and the valve core assembly and works cooperatively with the reset spring; the valve core assembly comprises an upper valve core, a lower valve core, a valve rod and the like, the buffer mechanism is composed of an upper annular step, a lower annular step, a sealing gasket ring, a gas escape channel and a buffer cavity, and the buffer cavity is communicated with an upper gas cavity through the gas escape channel. According to the application, the reversing is performed first, and then the buffering mechanism is used, a high-rigidity reset spring is used to ensure fast response, the buffer mechanism is used to absorb kinetic energy of the valve core by using gas damping, and rigid impact is avoided, and on the premise that the overall framework of the pneumatic control valve is not changed, the reversing repeatability precision and service life are improved.

The application discloses an experimental system and method for simulating the falling and breaking and motion characteristics of a dangerous rock of a slope, relates to the technical field of rock dynamics and engineering geological disaster prevention, and comprises a supporting and protecting device, an impact launching device, an adjustable composite slope device and a dynamic acquisition and analysis device. The impact launching device realizes accurate adjustment of an impact speed through a pneumatic driving unit. The adjustable composite slope device adopts an inclination hydraulic adjusting unit and a quick-release surface clamp to realize quick adjustment of the slope and the surface layer of different lithology slopes. The dynamic acquisition and analysis device synchronously acquires high-speed images of the whole process of rock impact breaking, the initial speed away from the cabin, the internal crack evolution of the slope and the three-dimensional morphology data of the debris. The application can quantitatively determine the critical kinetic energy threshold of rock breaking, reverses the motion trajectory and energy dissipation law after breaking, and provides a reliable experimental platform and method for the mechanism research of dangerous rock falling of a high and steep slope and the design of a protection engineering.

The present disclosure relates to the technical field of vehicle intelligent driving, and provides a vehicle control method and a vehicle. In response to monitoring that a vehicle brakes, vehicle acceleration data and wheel speed are acquired, a target disturbance intensity is determined according to the vehicle acceleration data and the wheel speed; it is determined that the target disturbance intensity meets a preset adjustment condition, and vehicle kinetic energy recovery data are acquired; a target recovery intensity is determined according to the target disturbance intensity, the kinetic energy recovery data and the vehicle acceleration data, and the vehicle is controlled to perform energy recovery according to the target recovery intensity. In the present disclosure, when the recovery intensity of energy recovery is determined, the target disturbance intensity of the vehicle at present, the actual running information of the vehicle and the kinetic energy recovery data when the vehicle recovers power are comprehensively considered, and the recovery intensity is more accurate. At the same time, the instability caused by kinetic energy recovery is dynamically inhibited, the imbalance of wheel speed and the decline of vehicle stability caused by recovery control rigidity are avoided, and the consistency of wheel speed and the safety of the vehicle are ensured.

The application provides a torque distribution method, a vehicle and a storage medium, and relates to the technical field of automobiles.The method comprises the following steps: determining a driving condition of the vehicle based on driving data of the vehicle; if the driving condition is a longitudinal economic condition, determining a driver input torque, average speeds of a plurality of motors and a target speed interval of each motor, the target speed interval being a speed interval in which motor kinetic energy conversion efficiency is greater than a first preset threshold; determining a torque distribution ratio of front and rear axles of the vehicle based on the driver input torque, the average speeds of the plurality of motors and the target speed interval of each motor; and performing torque distribution for the front and rear axles of the vehicle based on the torque distribution ratio of the front and rear axles of the vehicle.Through the scheme, the front and rear axles of the vehicle are subjected to torque distribution based on the driver input torque, the average speeds of the plurality of motors and the kinetic energy conversion efficiency of each motor, so that the torque distribution mode is more in line with the longitudinal economic condition, and the accuracy of torque distribution is improved.

The application discloses a large-overload experiment system simulating missile launching conditions, and belongs to the technical field of aerospace experiment equipment, which comprises a shock wave converging device for placing explosives, a wave generator, a carrying platform, a test product, a rotating pull rope and an energy absorption device, the energy absorption device is arranged above the test product through a support, the energy absorption device comprises a middle shaft and first energy absorption sheets, the impact force generated after the explosion of the explosives in the shock wave converging device is transmitted to the test product through the wave generator and the carrying platform, when the test product flies out due to the impact and acceleration, the rotating pull rope drives the test product to rotate around the energy absorption device, the transverse movement of the test product is converted into rotation, the unique movement conversion mode effectively converts the kinetic energy of the product, and the speed of the test product is gently reduced, the time required for deceleration is greatly reduced, after the experiment is completed, the experiment can be repeated by only replacing the first energy absorption sheets, and the project cycle can be greatly shortened.

This utility model provides a diaphragm pump and a smart home device. The diaphragm pump includes an eccentric wheel, which includes a wheel body and a connecting post disposed at the bottom end of the wheel body. The bottom end of the connecting post has a recessed mounting groove. A first bearing has a first mounting hole at its center, and the connecting post is disposed in the first mounting hole, with the wheel body confined outside the bearing. A support has a bearing sleeve fixed in the middle of its bottom end, and the bearing sleeve has a second mounting hole, allowing the first bearing to be installed in the second mounting hole. By setting the connecting post, the first bearing, and the bearing sleeve to fit together, and providing a mounting groove at the bottom of the connecting post to connect with the drive end of the smart device, more of the motor's rotational kinetic energy is utilized, reducing energy waste. At the same time, it makes full use of the limited internal space of the product, reducing the space required for a separate motor, thus lowering product costs. The product does not need to be equipped with a separate motor.