106results about How to "Stable speed" patented technology

The invention discloses energy-saving high-pressure cleaning equipment for square and rectangular pipes, and relates to the technical field of high-pressure cleaning, the energy-saving high-pressure cleaning equipment comprises a main body frame, a cleaning module is mounted above the main body frame, a rotational flow collaborative cleaning mechanism is arranged in the cleaning module, and the rotational flow collaborative cleaning mechanism is used for changing a water flow mode to ensure internal and external water flow collaborative high-pressure cleaning; the introduced air conveying bin only surrounds the outmost periphery of the nozzle, air flow flows along spiral water flow on the outmost periphery of the nozzle after being discharged in a vertical flowing mode, through the design, the peripheral water flow obtains additional momentum under the action of wind power, and then the momentum is transmitted to the internal water flow through collision among fluid molecules; according to the process, redistribution of energy is achieved, energy of internal water flow is supplemented, and water flow impact force borne by the peripheral square and rectangular pipes and the internal square and rectangular pipes is more balanced through the effect of wind power on the peripheral water flow and transmission of the energy to the internal water flow.

The invention relates to a virtual reality technology-based humanoid robot remote control system and method, the system comprises a VR device and a humanoid robot, and the VR device comprises a head-mounted device, a hand device, a visual information sampling unit, a hand device sampling unit and a visual information imaging unit; the humanoid robot comprises a robot system communication unit, a robot system planning control unit, a visual sensor and a joint motor execution unit. The technical problems that existing robot control mainly depends on field teaching operation of workers, so that the mechanical arm control threshold is high, and the field limitation is large are solved, and the beneficial effects of being low in threshold, high in interactivity, low in delay, high in safety, high in flexibility and the like are achieved.

The invention belongs to the field of hydraulic engineering, and relates to an arch dam cable crane real-time obstacle avoidance trajectory smooth transition planning method, which comprises the following steps: 1) initializing working initialization parameters of an arch dam cable crane; 2) constructing a two-dimensional grid environment map; 3) performing simplest geometric obstacle avoidance path planning based on the two-dimensional grid environment map to obtain path nodes; 4) optimizing the simplest geometric obstacle avoidance path plan to generate a trajectory cluster; 5) screening the trajectory clusters to form a preferred trajectory; 6) executing the optimal trajectory, and updating the two-dimensional grid environment map in combination with the collision risk in the event; and 7) in combination with the updated two-dimensional grid environment map, repeatedly executing the step 3), and constructing a real-time obstacle avoidance track smooth curve. The invention provides the smooth transition planning method for the real-time obstacle avoidance track of the arch dam cable crane, which can provide theoretical research and engineering application support for dynamic simulation and beforehand rehearsal of a cable crane hoisting operation process, real-time obstacle avoidance track result output and safe and efficient construction guidance of a construction process.

The invention belongs to the technical field of robot automatic force control polishing of optical elements, and particularly discloses a robot polishing force speed planning method and system considering the surface shape precision and the machining efficiency of the optical elements. The method comprises the steps that based on the Preston theory, a material removal model of the small grinding head polishing device is established; acquiring surface shape data of a detection point of the optical element, and planning a polishing path of the optical element in an off-line manner; discrete cutter points are fitted, a parameterized position curve is obtained, points are taken uniformly to obtain surface shape optimization resident points, and a unit material removal matrix is established in combination with a material removal model; and constructing a first-step optimization model and a second-step optimization model, and obtaining the optimized contact force and feed speed. According to the invention, optimization of contact force and feeding speed during optical element processing can be realized, and high-quality optical elements can be obtained with high efficiency.

The invention discloses a conveying device for a hollow glass production line, and relates to the technical field of hollow glass production line conveying, the conveying device comprises a fixing plate, the top of the fixing plate is rotatably connected with a connecting rod, one end, away from the fixing plate, of the connecting rod is rotatably connected with a plurality of square plates, and the plurality of square plates are uniformly arranged on the outer side of a frame body; the two ends of the connecting rod are rotationally connected with the staggered fixing plate and the square plate, the top of the connecting rod is rotationally connected with a middle rod, the middle of the connecting rod is rotationally connected with a rotating rod, the side, close to the rotating rod, of the fixing plate is fixedly connected with a middle plate, and the inside of the outer side of the fixing plate is rotationally connected with a guide roller. According to the conveying device for the hollow glass production line, the distance between the guide rollers can be adjusted according to the size of fixed glass, glass supporting and positioning of equipment in the conveying process are improved, the conveying efficiency of the glass can be improved, shaking and deviation of the glass in the conveying process can be reduced, and therefore the production quality is improved.

The invention belongs to the technical field of varnished wire detection, and particularly relates to a detection device for an inductance element varnished wire, which comprises a base, a winding traction mechanism, a guide diameter measuring mechanism, a pressurization air supply mechanism, a wire diameter feedback regulation and control mechanism, a detection angular velocity control mechanism, a detection result visual display mechanism and a PLC (Programmable Logic Controller). According to the invention, continuous and relatively stable tensile force is provided through constant-speed rotation of the winding drum, the increase of the tensile force is more linear, additional damage to the enameled wire caused by sudden impact force is avoided, the test result can more accurately reflect the tensile property of the enameled wire in actual use, and the test can be carried out in a relatively compact space, so that the test efficiency is improved. According to the device, the requirement for a site is relatively low, the angular speed of the winding drum and the detection height of the winding drum in the detection process can be automatically adjusted, and a final test value in a tension test can be displayed more visually and clearly.

The utility model discloses a six-arm type inspection robot capable of realizing single-line and double-line switching inspection, which comprises a robot body, and three primary line changing wheel discs are sequentially arranged on the robot body from front to back at intervals; two front movement mechanisms capable of independently rotating are arranged on the first-stage wire changing wheel disc at the front end; two self-power-taking mechanisms capable of independently rotating are arranged on the middle first-stage wire changing wheel disc; two rear movement mechanisms capable of independently rotating are arranged on the first-stage wire changing wheel disc at the rear end; the front movement mechanism, the self-power-taking mechanism and the rear movement mechanism are all connected to the overhead line in a suspended mode, and the front movement mechanism, the self-power-taking mechanism and the rear movement mechanism which are horizontally arranged on the same side are connected to the same overhead line in a suspended mode and can rotate synchronously when the overhead line is switched. According to the utility model, on-line real-time switching can be carried out, line obstacle crossing inspection of a single line and a part of split conductors can be completed, and the requirement of an inspection robot on the number of specific lines can be reduced.

The utility model discloses a turnover panel sorter workbin pushing frame mechanism, automatic confluence mechanism, sorting line, including workbin, workbin support plate, base support, drive unit and pushing frame plate, workbin is placed on the workbin support plate, workbin support plate is installed on the top of base support, drive unit is arranged below one end of workbin support plate, and the other end of workbin support plate is installed on the base support. The frame pushing plate is arranged on the material box supporting plate, one end of the frame pushing plate extends downwards to be connected with the driving unit, the frame pushing plate is driven by the driving unit to reciprocate in the lengthwise direction of the material box supporting plate, the material boxes are pushed by the frame pushing plate to move, and the confluence conveying line transversely arranged on the frame pushing mechanism is used for conveying the material boxes pushed by the frame pushing mechanism. The plate turnover machine body comprises a sorting trolley tray used for throwing materials into the material box, and through the structural design, the problems that according to an existing plate turnover sorting machine, the efficiency is affected and the labor cost is increased due to the fact that the full-material containers and the materials still need to be manually carried to a designated operation area to be packaged and sealed are solved.

This invention provides a cup assembly for a food processor, including a cup body, a cup lid, and a processing component disposed within the cup body. It also includes a gearbox, which comprises a movably disposed clutch output shaft. When the clutch output shaft moves to a first position, it drives the processing component to output a first rotational speed; when the clutch output shaft moves to a second position, it drives the processing component to output a second rotational speed. The cup lid is installed in place, maintaining the clutch output shaft in either the first or second position. Furthermore, a food processor with the aforementioned cup assembly is provided. In the first position, the clutch output shaft outputs a first rotational speed to adapt to multi-functional cooking; in the second position, it outputs a second rotational speed to adapt to another multi-functional cooking method requiring a different speed. By changing the position of the clutch output shaft, the processing component can be replaced and the rotational speed can be automatically switched. Moreover, the output speed range is wide and the torque is high, avoiding stalling caused by high processing resistance.

The invention relates to an automatic gilding press which comprises a gilding press body, an unwinding mechanism, a winding mechanism, a rotating speed adjusting mechanism, a rolling diameter measuring mechanism, a gilding mechanism and a controller. The rotating speed adjusting mechanism comprises a supporting plate, a first motor and an adjusting assembly. The adjusting assembly is used for adjusting the rotating speed of the winding mechanism and the rotating speed of the unwinding mechanism. The adjusting assembly comprises a driving chain wheel in transmission connection with the first motor, a plurality of adjusting chain wheels with different diameters, a chain in meshing connection with the driving chain wheel and the adjusting chain wheels and a derailleur used for changing the position of the chain, and the derailleur is electrically connected with the controller; the adjusting chain wheel is used for driving the winding mechanism and the unwinding mechanism to rotate, the winding diameter measuring mechanism is in signal connection with the controller, and the controller drives the derailleur to adjust the position of the chain. By adjusting the rotating speed of the unwinding mechanism and the rotating speed of the winding mechanism, the difference between the unwinding speed and the winding speed of the alumite is reduced, and therefore the tension borne by the alumite is reduced, and the gold stamping machining quality is improved.

The utility model provides a modified star-shaped cinder valve. The modified star-shaped cinder valve comprises a shell, an impeller, a driving motor, a baffle assembly and a plugging assembly. The impeller is arranged in an inner cavity of the shell and comprises a rotating shaft and a plurality of blades, the driving motor is in transmission connection with the impeller, the baffle assembly comprises two baffles fixedly connected in a feeding port of the shell, an inlet is formed between the two baffles, and the plugging assembly comprises a sealing plate connected between the outer ends of every two adjacent blades. The two partition plates are connected to the outer side of each sealing plate, a material receiving groove is formed between the two partition plates, and the material receiving grooves sequentially pass through the position below the inlet along with rotation of the impeller; the baffle assembly can reduce entering of materials, the blocking assembly can reduce the conveying amount of the materials, and therefore the requirement for the small conveying amount of the materials is met, and the motor frequency does not need to be reduced.

The invention relates to the field of internet, and discloses a motor which comprises at least one first magnet and at least one second magnet, the first magnet and the second magnet can rotate relative to each other, and at least one magnetic pole of the first magnet is wrapped by a wire; the wrapping direction of the wire is different from the relative rotation direction of the first magnet and the second magnet, and the heteropolar distance between the magnetic pole end, wrapped by the wire, of the first magnet and the second magnet is close to the homopolar distance. The motor has the advantages of stable rotating speed, high efficiency, low cost, less electromagnetic interference, low noise and long service life.

The utility model provides a manual wrapping film winding device, which relates to the technical field of winding devices and comprises a bottom plate, a support plate A and a support plate B are fixedly mounted at the top end of the bottom plate, a motor is fixedly mounted on the surface of the support plate A, a two-way threaded rod is mounted at the output end of the motor, a clamping plate is sleeved on the surface of the two-way threaded rod, and the clamping plate is fixedly mounted on the bottom plate. A rotating roller penetrates through the end, away from the two-way threaded rod, of the clamping plate, and a roller bearing wheel is fixedly installed at the end, away from the bottom plate, of the supporting plate A. According to the winding device, the bidirectional threaded rod, the motor and the clamping plates are arranged, the motor B is started, the bidirectional threaded rod rotates to drive the two clamping plates to move in the opposite direction or the opposite direction, a winding film needing to be wound is limited by adjusting the distance between the clamping plates, and the winding film is wound through limiting control. The winding film can keep stable tension and speed in the winding process, the problems of material breakage and the like are avoided, and stable winding of the winding film is guaranteed.

The present application relates to the technical field of vehicles, and specifically discloses a control method and device for a hydraulic retarder system, a vehicle and a storage medium, wherein the control method for the hydraulic retarder system acquires a control instruction of the hydraulic retarder; when the control instruction is a starting instruction, a synchronizer is combined with an enablement; the rotational speed V11 of a rotor is acquired; the rotational speed V12 of a driving gear is acquired; a first rotational speed difference rate is calculated, the first rotational speed difference rate=(V12-V11) / V12; and the hydraulic retarder is started when the first rotational speed difference rate is not more than a first set value. The rotational speed of the rotor and the rotational speed of the driving gear are both stable when the hydraulic retarder is started, and normal operation can be maintained, thereby avoiding power jerk and improving the user driving experience.

The utility model relates to the technical field of motorcycle engines, and discloses a motorcycle reverse gear main and auxiliary shaft mechanism which comprises a main shaft and an auxiliary shaft, five main shaft gear teeth are arranged on the main shaft, five auxiliary shaft gear teeth are arranged on the auxiliary shaft, and the motorcycle reverse gear main and auxiliary shaft mechanism is characterized in that a main shaft reverse gear tooth is fixedly arranged on the main shaft, and an auxiliary shaft reverse gear tooth is arranged on the auxiliary shaft in an empty sleeve mode. The main shaft reverse gear teeth are meshed with the auxiliary shaft reverse gear teeth, the main shaft reverse gear teeth and the auxiliary shaft reverse gear teeth are meshed with gear teeth on a reverse gear shaft at the same time, and the reverse gear shaft is located between the main shaft and the auxiliary shaft. The structural layout is compact, and the vehicle speed is more stable and faster.

This utility model relates to the field of power machinery technology and discloses a centrifugal mechanical power enhancer, including a support frame with a symmetrical support structure. One end is fixed with a reinforcing part, and the other end is rotatably connected to a second gear disk. The middle section supports a drive device. The drive device, using a motor structure, is located at the lower part of the support frame and is connected to the drive shaft via a chain to provide initial rotational power. The reinforcing part, the core power enhancement unit, includes: a first gear disk, coaxially connected to a connecting shaft, with an inner gear ring meshing with a drive gear, and circumferentially distributed mounting positions for the iron-throwing parts on the outer side; a positioning disk, coaxially arranged with the gear disk and maintaining a distance, rotatably connected to the support frame via bearings, providing a reaction force fulcrum for the iron-throwing parts; and three symmetrically arranged iron-throwing parts, each containing a 24 kg iron-throwing body. This utility model features a compact structure, efficient transmission, and enhanced power through the cooperation of the iron-throwing parts and gear disks. The electrical control cabinet allows for precise adjustment, adapting to different loads and exhibiting strong stability.

A powder feeding device and a powder feeding method for manufacturing three-dimensional objects, wherein the powder feeding device comprises: a powder storage tank, a powder feeding hopper, a powder feeding box, a powder feeding shaft, a first gear, a second gear, a driving mechanism and a control system, the powder storage tank is provided with at least one first upper material level switch and a first lower material level switch from top to bottom, and a butterfly valve is provided at the bottom of the powder feeding hopper, which is used to control whether the powder falls into the powder storage tank under the control of the control system; one end of the powder feeding shaft is connected to the first gear, the second gear is connected to the driving mechanism, and the first gear is meshed with the second gear. When the driving mechanism drives the second gear to rotate, it drives the first gear to rotate, thereby driving the powder feeding shaft to rotate, so that the powder in the powder storage tank falls to the powder feeding box under the rotation of the powder feeding shaft, and falls to the powder feeding position through the outlet of the powder feeding box. The powder feeding device and the powder feeding method for manufacturing three-dimensional objects of the present invention have a stable rotation speed, a stable and smooth powder discharging rate, and a stable gear transmission.

The utility model belongs to high temperature friction coefficient test technical field especially for a kind of low-speed high-temperature environment with lubricating material friction coefficient testing device, including casing, bottom plate and base, casing is set in bottom plate upper portion, base is set in bottom plate lower portion;The top surface of bottom plate is respectively provided with horizontal key and vertical key, and force measurement driving assembly is also provided on the bottom surface of bottom plate;Supporting seat is provided on the mounting hole corresponding to horizontal key;The rear end of supporting seat is provided with motor base, and coupling is provided in the middle part of motor base;The end of coupling is connected with servo motor;The front end of supporting seat is provided with bearing, and supporting shaft is provided in the lower part of bearing;The front end of supporting shaft is also provided with test shaft;The front end of test shaft is provided with test assembly.The utility model can realize the standardization measurement of finished lubricating material sliding friction coefficient under low-speed high-temperature environment, solve the problem that traditional method cannot quantize test data.

This invention discloses a fully automatic linear control busbar bonding structure and method. The structure includes: a bonding pressure roller, a take-up roll, and a release roll mounted on a substrate; multiple reversing rollers on the substrate for adjusting the direction of the material roll / strip; a release roll for holding the material roll / strip; one end of the material roll / strip connecting to the take-up roll after passing through the multiple reversing rollers and the bonding pressure roller; the bonding pressure roller for pressing the material roll / strip closer to the electronic board; and a control module connected to a tension adjustment mechanism, a take-up motor, and a release motor, capable of adjusting the speeds of the take-up motor and the release motor. This fully automatic linear control busbar bonding structure utilizes the independent rotation of the take-up roll and the release roll to uniformly wind the material roll / strip onto the take-up roll. During the conveying process, the angle and position of the material roll / strip are adjusted by the multiple reversing rollers, facilitating the bonding pressure roller to bond the material roll / strip to the electronic board, ensuring high efficiency and high quality in busbar installation on the electronic board.

The invention discloses a system and method for detecting the rotor position and rotating speed of a switched reluctance motor, and belongs to the technical field of switched reluctance motor position detection and rotating speed control. Which comprises a position coding fluted disc (2) and a sensor mechanism (3) which rotate synchronously, and is characterized in that the position coding fluted disc (2) comprises an absolute position coding fluted disc (5) and an increment position coding fluted disc (6) which are coaxially arranged, and the absolute position coding fluted disc (5) or the increment position coding fluted disc (6) is coaxially fixed with a motor shaft (4); the sensor mechanism (3) includes an absolute position sensor (24) and an incremental position sensor (27). According to the detection system and the detection method for the rotor position and the rotating speed of the switched reluctance motor, by arranging the incremental position coding fluted disc, high-resolution incremental position coding is increased, the dynamic response performance of the switched reluctance motor is good when the switched reluctance motor runs at a low speed, and the rotating speed of the motor can still be kept stable when the load torque fluctuates in a large range.

The utility model relates to a device for transporting rubber cores in the field of wire harness processing, which is characterized in that a discharge channel is arranged at the upper end of a vibrating disk, a feeding channel is arranged at the upper end of a linear feeder, the discharge channel is connected with one end of the feeding channel, a support frame is arranged on the top surface of a bottom plate, a pusher is arranged at one end of the support frame, and a discharge port is arranged at the other end of the support frame. A discharging channel is arranged in the middle of the supporting frame, one end of the discharging channel is connected with the other end of the feeding channel, the movable end of the pusher moves to the discharging opening from the other end of the discharging channel, and the mechanical clamping hand circularly moves in the direction of the discharging opening. According to the device for transporting the rubber core, by arranging the vibration disc, the linear feeder and the mechanical clamping hand, mechanical transportation and tightening of the rubber core are achieved, so that the labor cost is effectively reduced, the production benefit is greatly improved, and meanwhile the transportation safety of the rubber core is enhanced; and through the arrangement of the feeding channels, manual intervention is not needed, the rubber cores are accurately fed, and the automation degree of the production process is improved.

The utility model discloses a control system of an electric cement tank truck, which relates to the technical field of electric engineering trucks and comprises a truck chassis, a motor, a speed reducer, a cement tank, a spline, a diesel engine, a generator, a power battery pack control box, a control system control box and a power takeoff. Traditional diesel engine driving is replaced, tail gas emission is fundamentally eliminated, a pure electric driving mode is achieved through the motor controller, pollution generated by fuel oil combustion is avoided, noise is low when the electric cement tank truck works, noise pollution of a construction site can be reduced, and the comfort of the working environment is improved; and a motor controller, a generator controller and a sensor group are coordinated through a whole vehicle controller, so that multi-module cooperative control is realized, motor output is optimized through a vector control algorithm, the rotating speed of the cement tank is ensured to be stable, and the stirring quality is improved.

The invention relates to a rotating speed control method and a rotating speed control system for a compressor. The method comprises the following steps: acquiring an operation mode of a controller of the compressor; if the operation mode is a position mode, the position where the compressor is located, the current position height and the current environment temperature are obtained; acquiring a corresponding position tachometer according to the position and the current position height; searching a first maximum rotating speed V1max and a first target rotating speed V1t corresponding to the current environment temperature in a position rotating speed table corresponding to the position and the current position height; and when the current environment temperature of the compressor reaches the preset target temperature, the compressor is controlled to operate at the searched first maximum rotating speed V1max, and when the current environment temperature of the compressor reaches the preset target temperature, the compressor is controlled to operate at the searched first target rotating speed V1t. Regional environmental factors are considered, and position rotating speed control is achieved.

The invention provides a dual-controller cooperative redundancy control method for an engine, which comprises a main ECS and a standby ECS which are mutually redundant hot backup, and the main ECS and the standby ECS are mutually monitored and switched during working according to the following control method: when the system is normal, the main ECS controls the engine to operate; when the main ECS breaks down, the main ECS is switched to the standby ECS to continuously control the engine to operate; and when both the main ECS and the standby ECS fail, the engine is stopped. According to the method for controlling the engine in the cooperative redundancy mode through the double controllers, automatic switching can be carried out when the main control right breaks down, manual switching can be carried out when no fault exists, continuous operation can be carried out without shutdown under serious faults, and higher availability is achieved.

The utility model relates to tablet computer quality detection technical field especially is related to a kind of side magnetic force detection device for tablet computer. Aim at the problem such as unstable tension, big data dispersion in existing manual test mode, and rigid connection cannot adapt to product size tolerance and lead to misjudgment and miss detection, the device includes controller, operation platform, control component, fixed component and test component. Controller is located in operation platform, and control component includes control panel with button and pilot lamp;Fixed component is fixed tablet computer by air cylinder drive pressure plate;In test component, motor drives sliding platform to drive push-pull dynamometer to move, and then drive flexible clamping unit and test pen to approach or away from tablet computer, and flexible clamping unit is self-adapting product size deviation. The device realizes test automation, guarantees tension stability and data consistency, can accurately detect tablet computer side magnetic force, reduces misjudgment and miss detection, improves detection efficiency and quality control level.

The utility model relates to the field of mineral powder impurity removing device, disclose a mineral powder processing is with impurity removing device, including support frame, the outside fixed connection of support frame has two fixed plates, the inside fixed connection of fixed plate has the material collecting box, the top fixed connection of material collecting box has sieve box, the top fixed connection of sieve box has roller box, the top fixed connection of roller box has the hopper, the inside of sieve box is provided with screening mechanism, screening mechanism is used for screening the internal particle impurity of mineral powder, avoids the influence of the subsequent process and product purity of impurity residue, screening mechanism includes base, the top of base fixed connection in fixed plate, the top fixed connection of base has power motor. In the utility model, the mineral powder is into the roller box through the hopper, and after the roll shaft is broken and is crushed, the power motor drives the disc, the rocker drives the filter screen to reciprocate, separates the mineral powder and the impurity, and the support frame and the fixed plate are stable.

The present invention discloses a model-free predictive speed control method and system based on a permanent magnet synchronous motor, which is applied to the field of permanent magnet synchronous motor speed control. The method comprises: establishing a pole polynomial of periodic disturbance of the permanent magnet synchronous motor; designing a model-free predictive speed controller according to the pole polynomial; outputting a current inner loop reference current according to the model-free predictive speed controller; and embedding the pole polynomial of periodic disturbance into the model-free predictive speed controller, based on the internal model principle, suppressing the periodic disturbance existing in the system, thereby improving the stability of the output speed and torque of the control system.

A turbine type flow sensor is provided with a main water pipe, the upper end and the lower end of the main water pipe are closed, so that a metering cabin is formed in the main water pipe, a turbine is arranged in the middle of the metering cabin, a magnet is arranged in the turbine, and a water inlet pipe transversely communicated with the upper portion of the metering cabin and a water outlet pipe transversely communicated with the lower portion of the metering cabin are arranged on one side of the main water pipe. The other side of the main water pipe is provided with a detection circuit matched with the magnet; a first conical groove located above the turbine and a second conical groove located below the turbine are formed in the metering cabin, and the first conical groove and the second conical groove are coaxially aligned; the upper end of a rotating shaft of the turbine forms a first conical part with the taper smaller than that of the first conical groove, and the lower end of the rotating shaft of the turbine forms a second conical part with the taper smaller than that of the second conical groove. The rotating shaft of the turbine always takes the cone top of the first cone part and the cone top of the second cone part as a supporting point, the rotating friction is greatly reduced in a point contact mode, the rotation starting of the turbine is accelerated, the stable rotating speed is achieved, and the response speed and the detection precision of flow detection are improved.

The utility model discloses a traction motor rotor shaft structure, which comprises a rotor shaft and an end cap, and the end cap is nested at the tail end of the rotor shaft and is rotatably connected with the rotor shaft. A sealing groove is formed in the outer wall of one end of the rotor shaft, and an inner through groove and an inner spiral through groove are formed in the rotor shaft; the traction motor rotor shaft structure comprises an end cap, a sealing rubber ring is embedded in the inner edge of the end cap, an annular inner groove is formed in the end cap, a liquid inlet pipe opening is formed in the middle of the top of the end cap, and a backflow pipe opening is formed in the middle of the side wall of the end cap. The end cap is externally connected with oil cooling equipment, continuous oil cooling is achieved on the rotor shaft, a large amount of heat can be carried from the inside through the heat dissipation mode, compared with other heat dissipation modes, the heat dissipation efficiency of the heat dissipation mode is optimal, the rotor shaft can be kept stable at a higher rotating speed, and the situation that the dynamic balance of the rotor shaft is affected by high temperature is avoided.

The invention discloses a PWM (Pulse Width Modulation)-based inflator pump motor power control method and a PWM-based inflator pump motor power control device, which can be applied to rotating speed control of a motor. According to the motor rotating speed control method, the output power is obtained, the PWM duty ratio parameter used for driving the motor is adjusted in combination with the output power and the real-time rotating speed, and the rotating speed or power of the motor is stabilized by generating the motor rotating speed control signal through the PWM duty ratio parameter, so that the situation that the motor rotating speed is reduced due to motor power reduction is compensated; the rotating speed of the motor can still be kept stable under the condition that the power of the motor is reduced, and the defect that in the prior art, a device circuit needs to be added on an original functional circuit to increase cost is overcome; therefore, according to the motor rotating speed control method, the technical effect that a user can adjust the rotating speed of the motor under the condition that the hardware cost is not increased is improved, and the user experience is improved.