39results about How to "Improve transmission stability" patented technology

This application provides a cross-application service scheduling and execution method and system in a vehicle environment, relating to the field of intelligent vehicle system technology. It acquires known service-related data of the vehicle system, as well as environmental perception data and user voice information of the vehicle environment; parses the user voice information to obtain target demand information, intent association information, and voice feature information; forms scene adaptation parameters based on environmental perception data; generates multiple second instruction transmission signals based on target demand information; detects each target demand information based on service-related data, intent association information, voice feature information, and scene adaptation parameters, obtains detection results, and combines these with the second instruction transmission signals to schedule and execute multiple cross-application services in the vehicle environment, generating service scheduling and execution results. This achieves dynamic coordination and orderly scheduling of cross-application services, improving the response accuracy and execution security of the vehicle system in complex driving scenarios.

The utility model relates to permanent magnet motor technical field, concretely relates to a kind of permanent magnet motor suitable for oilfield pumping equipment, including speed reducer, the input end of speed reducer is fixedly connected with input shaft, the outside of one end of input shaft is fixedly connected with shaft sleeve, the outer wall of shaft sleeve is fixedly connected with rotor iron core, the outer wall of rotor iron core is fixedly connected with multiple equidistance evenly distributed permanent magnet, the outer wall of speed reducer near input shaft is fixedly connected with mounting flange, the side wall of mounting flange is provided with front end cover, and the side wall of front end cover is provided with machine shell.Compared with prior art, after the structure design of increasing air gap is used, even if slight axial displacement or radial swing occurs in the running process of rotor iron core, the interference between permanent magnet and stator iron core can be effectively avoided, and the reliability and adaptability of motor under high impact, high vibration working condition are improved.

This utility model discloses a coating machine for processing silicone protective film, including a coating frame, a transmission roller group, a coating seat, a pressing mechanism, a feeding end seat, a feeding mechanism, a discharge end seat, and a winding mechanism. The transmission roller group is arranged on the surface of the coating frame. A coating seat is arranged on one side of the top surface of the coating frame. A pressing mechanism is arranged on one side of the coating seat. A feeding end seat is installed on one side of the pressing mechanism. A feeding mechanism is arranged above the surface of the feeding end seat. A discharge end seat is arranged below one side of the outer wall of the coating frame. A winding mechanism is arranged above the surface of the discharge end seat. The feeding mechanism and the winding mechanism have the same structure. A traction roller is installed at one end of the coating frame. This silicone protective film coating machine improves coating efficiency and uniformity. The connection design between the various components is reasonable, facilitating disassembly and cleaning. In particular, the identical structure of the feeding mechanism and the winding mechanism makes maintenance simpler.

This utility model's electric mining truck gearbox features a three-speed design that allows selection of the most suitable gear based on different working conditions, optimizing power output to meet the power requirements of mining trucks, increasing the coverage of the motor's high-efficiency zone, improving the overall efficiency of the gearbox, and effectively reducing energy consumption. Based on the powerful performance provided by the multi-motor configuration, it enhances the flexibility and efficiency of the drive system. The front intermediate shaft assembly is coaxially connected to the output end of the power coupling assembly, and the rear intermediate shaft extends into the front intermediate shaft assembly and is coaxially aligned with the output end of the power coupling assembly, forming a compact parallel shaft structure. This fully utilizes the radial space of the gearbox and reduces its axial dimensions, thereby reducing the gearbox's volume and facilitating overall vehicle layout. Furthermore, the front and rear intermediate shaft assemblies share the radial and axial loads during transmission, reducing gear stress and improving the transmission stability and reliability under harsh working conditions, thus enhancing the gearbox's adaptability to various operating conditions.

This invention belongs to the field of space laser communication and deep space exploration technology, and discloses an integrated detection device for space laser communication monitoring and interaction. The device includes a main body, on which are integrated a solar panel, a navigation imaging device, a communication antenna, a communication receiver, a radar, a landing support, and functional components for communication monitoring, environmental perception, and interactive operation. This invention forms a closed-loop system through electrical, signal, and mechanical connections, enabling simultaneous execution of multiple tasks, significantly improving the device's space operation efficiency, reducing the load pressure on space launch vehicles, and adapting to the space constraints of on-orbit operations. The communication antenna and receiver achieve bidirectional signal interaction through a high-speed laser communication module and are linked with the navigation imaging device and environmental sensors to ensure stable transmission and status monitoring of laser communication signals, which is beneficial for practical applications and operations.

The application relates to the technical field of data transmission control, and discloses a DICOM image routing method and system based on port multiplexing. By binding a shared DICOM port and listening to a connection request, multiple backend DICOM receiving nodes can share a unified access port, a command set and a data set are selectively parsed according to a command type, a structured session context is constructed, routing judgment is upgraded from a traditional coarse-grained mode based on a source IP and a source port to a fine-grained mode based on protocol semantics, a routing decision module adopts a multi-field rule matching and index acceleration mechanism, can improve rule screening efficiency and reduce matching delay in a scene with more concurrent connections, and a routing optimization module dynamically evaluates in combination with running state information and transmission performance information of candidate target DICOM receiving nodes, so that a communication bottleneck can be avoided, in which a fixed transmission path is long-term concentrated on part of nodes.

This utility model discloses a portable cable laying bracket in the field of cable laying technology, including a base. The base has a mounting cavity, within which a steering assembly is installed. The steering assembly is driven by a vertical rod. A mounting plate is fixed to the top of the vertical rod, and a housing is fixed above the mounting plate. A cable laying drive assembly is installed inside the housing. Connecting rods are connected to both sides of the cable laying drive assembly, and cable laying rollers are fitted onto the connecting rods. A limiting rod is provided at the end of the connecting rod near the cable laying drive assembly, and a limiting groove for the limiting rod to engage is provided on the same side of the cable laying roller. An external thread is provided at the end of the connecting rod, and a fastening nut is installed. A wire assembly is provided at the lower end of the vertical rod, positioned directly below the cable laying roller. This utility model achieves the orientation adjustment of the cable laying roller through a steering motor and improves laying efficiency through a double-sided synchronous cable laying structure, offering advantages such as convenient operation and high work efficiency.

The utility model relates to a kind of miniature direct-current brushless motor, including shell, and shell is equipped with accommodating cabin;With the motor rear cover and motor front cover of accommodating cabin seal connection;Stator core is equipped in accommodating cabin;With the rotor assembly matched with stator core;PCBA board is equipped in accommodating cabin;Motor rear cover is equipped with electric connection interface, electric connection interface is operatively electrically connected to PCBA board;The center of motor rear cover is equipped with the stator support shaft extending into accommodating cabin, stator core is fixedly sleeved on stator support shaft;Motor front cover is equipped with insert sealing joint part, insert sealing joint part is used to insert into gear box and form sealed connection with gear box;The output end of the motor shaft of rotor assembly extends outward through insert sealing joint part.It replaces traditional motor.The miniature direct-current brushless motor can effectively solve the problems in the prior art through innovative structural design, improve the performance, reliability and service life of motor in smart home device.

The utility model discloses a kind of connecting mechanism based on centerless grinding machine, it is related to centerless grinding machine auxiliary equipment technical field, and it includes: angle adjusting mechanism, the angle adjusting mechanism is used to adjust the height and inclination angle of connecting mechanism whole, the angle adjusting mechanism includes support base plate, and the lower portion of the support base plate is fixedly connected with four groups of mobile universal wheel;In the utility model, the thread transmission of long screw rod and upper sliding block is driven by hand wheel, linkage first rotating arm and second rotating arm form four connecting rod mechanism, realize the accurate adjustment of support platform height and inclination, adapt to diversification production scene, auxiliary support mechanism adopts the taper self-locking of trapezoidal external thread block and internal thread ring, when rotating internal thread ring, it is squeezed trapezoidal external thread block radial shrink and holds tightly adjusting rod along taper downwards, only needs to rotate reversely when unlocking, and it is automatically released locking force, effectively inhibit the vibration deviation caused by inclination in the operation of conveying belt, improve workpiece transmission stability.

This utility model discloses a self-tightening, anti-loosening gear and rack mechanism, including a gear disk, a rolling rack, and a gear support. The gear disk is mounted on the gear support via a central column and has an adjusting spring and a stop pin inside. A rolling wheel is mounted at the bottom of the rolling rack, and a rack end shaft is provided at its tail end. When the rolling rack moves, the adjusting spring generates an axial preload to keep the gear disk and rolling rack tightly meshed. The outer gear ring of the gear disk has an end shaft indicator groove that cooperates with and limits the movement of the rack end shaft. This utility model effectively prevents gear loosening through a spring self-tightening mechanism and reduces friction through the rolling wheel. It has advantages such as high transmission accuracy, good anti-loosening performance, and reliable structure, and is suitable for mechanical equipment requiring high-precision transmission.

This utility model discloses a pinch roll device. The pinch roll device includes a housing, a pair of double-rocker-arm pinch rolls spaced vertically on the housing, a gearbox assembly disposed within the housing and for drive connection with the pair of double-rocker-arm pinch rolls, and a drive assembly disposed on one side of the housing. The housing has a channel for the drive assembly to extend into and drive through the gearbox assembly. By integrating the pinch rolls and the gearbox assembly into a single housing, space occupancy is effectively reduced, while avoiding the transmission components passing through the housing wall. This simplifies the complexity of the transmission components, reduces maintenance difficulty, and improves transmission efficiency and stability, thereby enhancing the overall production efficiency and product quality of the rolling line.

This invention relates to an electronic expansion valve, comprising a drive assembly, a screw, a valve needle, a valve seat, a bearing, and a valve needle spring. The valve seat has a fluid passage. The drive assembly drives the screw to rotate and move axially. The valve needle has an axial mounting hole inside, and its upper part has a bearing cavity to accommodate the bearing. The lower end of the screw extends into the axial mounting hole and is rotatably connected to the bearing, allowing for axial sliding. A screw retaining ring is provided at its lower end, and a screw annular protrusion is provided on its outer periphery. The valve needle spring is sleeved on the screw and confined between the screw annular protrusion and the upper end face of the valve needle. Downward movement of the screw compresses the valve needle spring through the screw annular protrusion, pushing the valve needle downward. Upward movement of the screw pushes the valve needle upward through the screw retaining ring against the bearing, thereby achieving stable axial movement of the valve needle to precisely control the opening and closing of the fluid passage. This structure achieves pure axial transmission through the bearing, effectively preventing the valve needle from rotating and vibrating with the screw. The compact layout of the valve needle spring significantly shortens the axial dimension of the valve body, improving transmission reliability and service life.

The utility model relates to the technical field of range extending type automobile, especially increase a kind of active air intake grille structure for range extender, including grille frame, the upper or front area of car rear wheel package is provided with grille mounting hole;Grille frame one end is embedded and fixed in the inboard of grille mounting hole, forms air inlet end, the other end is equipped with air outlet end, for connecting the air intake system of range extender;Drive assembly is located on grille frame, for driving flap to carry out overturning movement, to open or close air inlet end. By arranging air inlet end in the upper or front area of car rear wheel package, and setting flap controlled by drive assembly, active opening and closure to air inlet end are realized. When vehicle is in pure electric driving mode, range extender does not need to work, flap closes air inlet end under the action of drive assembly, effectively reduces vehicle front end airflow interference, reduces air resistance, improves pure electric cruising range;When range extender starts, flap is automatically opened, guarantees engine air intake demand.

The utility model discloses a kind of two-way data transmission devices, including bridge controller, first data interface and second data interface.Bridge controller integrates main control module, data transmission control module, first and second interface control module, data storage module, program storage module and clock module.Data transmission control module carries data between each interface control module and data storage module;Main control module controls the working state of each module according to the control program of program storage module and the clock signal of clock module;Two interface control modules are connected to external equipment through corresponding data interface and control data transmission respectively.The device can avoid network security risks and overcome the problem of complex storage medium operation.

The utility model discloses a kind of clamping jack and its whole bundle cable threading machine, it is related to the steel strand cable threading technical field of construction, bridge cable-stayed cable construction engineering, it includes cylinder body and piston rod of one end sliding connection in the cylinder body and the other end stretches out the cylinder body outside, the end of the cylinder body that stretches out piston rod is connected with barrel clamping head, steel strand transmission channel is radially equipped in the middle of this clamping head, the piston rod stretching out end is connected with clamping fork, the clamping fork is installed in the movement channel that is axially equipped in the clamping head, the clamping head is installed with steel strand inductor, compared with prior art, the utility model realizes accurate clamping to steel strand, improve the friction with steel strand, avoid the cable threading slip, can improve the reliability of steel strand compression, also can be used for cable threading different specifications whole bundle steel strand, improve the applicability of cable threading machine.

The utility model provides a kind of moisturizing device for tea planting, it is related to tea planting field, including water storage tank, the water pump is fixedly installed in the outside of water storage tank, the output of water pump is fixedly communicated with adapter pipe, the output of adapter pipe is fixedly communicated with multiple drainage tubes, the outside of each drainage tube is provided with a group of humidification mechanism.The application is provided with vertical pipe, shielding cover and humidity sensor and other components, so that the device can monitor the humidity of tea planting soil in real time, and irrigate and humidify the soil when needed, the humidification mechanism can spray the water transported by the drainage tube through the humidification nozzle to the tea soil, and also can use the impact force of water flow to drive the shielding cover to lift, so as to block the irrigation water sprayed by the humidification nozzle, so that the water can irrigate the soil near the nozzle, so that the tea soil can be effectively and evenly humidified, which is beneficial to maintain the soil humidity and ensure the normal growth of tea.

This utility model discloses an auxiliary positioning device for a medium- and high-voltage electronic aluminum foil corrosion production line, relating to the field of aluminum foil corrosion production technology. It includes a tank body with a positioning mechanism fixedly installed in the middle, and side guide rollers fixedly installed at both ends of the tank body. Using this structure, the auxiliary positioning device drives the slide and plate to move vertically via a screw, precisely adjusting the depth of the pressure roller's immersion in the electrolytic cell. This adapts to different thicknesses of aluminum foil and electrolyte concentrations. Simultaneously, the limiting discs at both ends of the pressure roller and side guide rollers, with their spacing adjusted by hand-tightening screws, effectively constrain the lateral displacement of the aluminum foil. The combination of these two components ensures that the aluminum foil is conveyed centered along a preset path, avoiding deviation and friction with the electrode plate, reducing surface damage, and ensuring that the contact angle and area between the aluminum foil and the electrolyte are always optimal. This significantly improves corrosion uniformity and conveying accuracy, and reduces the scrap rate.

The utility model discloses a kind of full-sealed type tensioning wheels, it is related to engine transmission technical field.The tensioning wheel includes swing arm, bearing and pulley, swing arm is connected by bolt with bearing, pulley is sleeved in bearing outer. To solve the problem that bearing is easy to enter water and dust under harsh working condition, pulley one end surface is equipped with sealing cover, sealing structure is equipped between the other end surface and swing arm, and the outer wall of bearing outer ring is equipped with plugging ring. Sealing structure includes annular groove on swing arm and the rubber sealing ring arranged in, sealing ring is equipped with convex part with triangular section, is blocked in pulley inner hole wall and groove. Pulley is also equipped with let slot, and annular groove edge forms "n" shape barrier gap. The utility model passes through multiple sealing structure, effectively blocks the water, dust invasion path, significantly improves the sealing property and service life of tensioning wheel, and is applicable to engineering machinery and wade engine.

This invention discloses a tension-adaptive yarn feeding device for cotton yarn production, belonging to the technical field of yarn feeding devices. It includes: a support plate frame, mounted on a frame in a cotton yarn production workshop via several assembly trays fixed to one side; and two tensioning rollers, respectively assembled at stroke notches at the top and bottom of the support plate frame, capable of displacement along the extension direction of the stroke notches. This invention, by employing a structure of track pins and helical tracks in the adjustment assembly, directly converts the axial linear displacement of the electric push rod into the rotational motion of the transmission column, and further amplifies and transmits the motion through gear pairs. This constructs a continuous motion conversion chain from linear drive—rotational output—displacement adjustment, breaking through the traditional method of adjustment relying on multi-stage linkages or single lead screws. This gives the tensioning roller adjustment process higher response sensitivity and transmission stability, significantly ensuring tension adjustment accuracy.

This utility model discloses a metal-structured card device integrating near-field communication (NFC) technology. It includes a first metal plate unit and a second metal plate unit bonded together. An ultra-thin NFC module is embedded within the interface area between the first and second metal plate units. The NFC module includes a thin substrate, an antenna etched onto the substrate, a chip body, and an absorbing material for interference suppression. The absorbing material is fixed to the substrate by an adhesive. This utility model embeds an ultra-thin NFC module between the first and second metal plate units, enabling near-field communication for the metal card, overcoming the metal shielding effect, and improving signal stability and sensitivity. The ultra-thin design ensures mechanical strength without increasing thickness, the etched antenna enhances signal transmission accuracy, and the absorbing material reduces metal interference and improves communication reliability. The absorbing material is fixed by the adhesive, ensuring stability, simplifying the manufacturing process, and reducing costs.

The application discloses a double gear pump, a front pump assembly comprises a front pump body and a front cover, a rear pump assembly comprises a rear pump body, the front cover is fixedly connected with the front pump body, the front pump body is fixedly connected with the rear pump body, a front pump connecting portion is arranged between the front cover and the front pump body, a rear pump connecting portion is arranged between the front pump body and the rear pump body, and the front pump connecting portion and the rear pump connecting portion are both provided with a first connecting assembly and a second connecting assembly. The front pump body and the front cover are positioned and connected through the front pump connecting portion, the front pump body and the rear pump body are positioned and connected through the rear pump connecting portion, there is no intermediate body structure between the front pump and the rear pump, and the overall structural compactness and connection stability are improved. Since the second connecting assembly is arranged between the front cover and the front pump body and between the front pump body and the rear pump body, the first connecting assembly of the front pump body and the rear pump body can both achieve the effect of inhibiting movement, the positioning precision and transmission precision of the gear pump are improved, and the volumetric efficiency under various rotational speeds and pressures is improved.

This utility model discloses a multi-layer precision gear, relating to the field of gear technology. It includes a gear body, connecting holes, connecting components, positioning components, I-beam grooves, a second nut, and a screw. The connecting hole is located in the middle of the gear body. Multiple connecting components are positioned opposite each other at the top and bottom of the gear body. The positioning components are positioned between two opposing gear bodies. Multiple I-beam grooves are respectively located on the two sides where the gear bodies fit together. The second nut is engaged between two opposing I-beam grooves. The screw is threadedly inserted into the middle of the multiple I-beam grooves. This utility model, through the coordinated arrangement of the connecting components, positioning components, I-beam grooves, second nut, and screw, reduces transmission errors, further suppresses relative slippage between gears, and improves transmission stability. The screw and second nut penetrate the multi-layer gear body, enhancing overall rigidity, preventing loosening during high-speed operation, and reducing noise and wear caused by unstable transmission.

This application relates to an electric helical rotary screw lifting structure and its control system, belonging to the field of lifting screws. It includes: a lifting shaft, comprising an internally threaded shaft and a lifting sleeve, the lifting sleeve being sleeved around the internally threaded shaft to form a screw drive for driving the lifting sleeve to rise or fall; a lifting drive assembly, equipped with a lifting drive source and a gear reducer, the gear reducer containing a worm gear and a worm for speed reduction, the worm gear being made of POM plastic and the worm being made of metal, the drive source driving the worm, the worm gear meshing with the end of the internally threaded shaft to drive the internally threaded shaft to rotate; and a lifting guide sleeve, sleeved on the outside of the lifting sleeve, with a guide protrusion fixedly provided on the inner wall of the lifting guide sleeve, and a guide groove formed on the outer wall of the lifting sleeve along the lifting direction, the guide protrusion being inserted and sliding within the inner wall of the guide groove, and the lifting guide sleeve being fixed to an external mechanism via a flange. This application has the effect of further improving the lifting efficiency of the electric screw structure and reducing noise.

This invention relates to a BeiDou and mobile communication fusion positioning system based on frequency division mixing (FDM), belonging to the field of BeiDou positioning and mobile communication fusion technology. The system includes a BeiDou multi-channel signal generation unit, a signal combining unit, a mobile communication transmission unit, and a BeiDou signal conversion unit, with each unit operating sequentially. The BeiDou multi-channel signal generation unit generates BeiDou frequency domain diversity combined signals or BeiDou time-division frequency domain diversity signals based on the frequency division isolation principle. The signal combining unit preprocesses and combines or directly transmits the signals. The mobile communication transmission unit enables the shared network transmission of BeiDou signals and mobile communication signals. The BeiDou signal conversion unit generates BeiDou positioning signals through filtering, mixing, and other processing. This invention relies on the core technology of frequency division mixing to enable BeiDou signals to share the transmission network with existing indoor communication distribution systems, adapting to enclosed scenarios such as parking lots, utility tunnels, and underground tunnels. It features a simple structure, strong coordination, and allows for seamless terminal access for positioning and navigation.

The utility model provides a kind of gear traction's coating die head wiping assembly and cleaning device, including guide rail, sliding block, mounting bracket, stepping motor, driving gear, transmission gear, elastic round plate and wiping component, guide rail is fixed on coating die head, sliding block is slidably connected with guide rail, mounting bracket is fixed on sliding block, stepping motor is fixed on mounting bracket, driving gear is fixed on the power output end of stepping motor, transmission gear is rotatably installed on mounting bracket and is engaged with driving gear, elastic round plate is fixed on transmission gear and outer periphery is in contact with coating die head surface, wiping component is installed on mounting bracket and wiping end is in contact with coating lip. The advantage of the design is: abandon traditional traction rope traction mode, adopt gear traction, avoid the problem caused by the length change of traction rope, improve transmission stability;Select stepping motor, realize more accurate displacement control, ensure the position accuracy of wiping component each time cleaning, improve cleaning quality.

This invention proposes an adaptive congestion control method for real-time audio and video streaming transmission. The transmitting end obtains link state parameters such as packet loss rate, network jitter, and round-trip time (RTT) based on RTCP information fed back from the receiving end, and constructs a time-series state as environmental observations by combining the differential characteristics of adjacent time points and historical action information. Simultaneously, it constructs basic utility based on the current transmission bitrate, packet loss rate, network jitter, and RTT, and forms a reward mechanism by combining proactive trial rewards and segmented congestion penalties. Based on the current environmental observations and environmental reward, the transmitting end outputs continuous control actions through a policy network and determines the target transmission bitrate according to a preset mapping relationship, dynamically adjusting the encoder's transmission bitrate. This method is applicable to network transmission scenarios with feedback lag, bandwidth variations, and random disturbances. Compared with traditional methods, it can effectively reduce packet loss rate and RTT while transmitting at higher bitrates, thus alleviating network congestion.

The application discloses an electromagnetic adsorption type braided rope installation clamping component and relates to the technical field of braided rope processing equipment. The component comprises a mounting shell, a braided rope twisting component, a driving cylinder, a driving motor and an electromagnet sleeve set. The rear side of the mounting shell is provided with a heat dissipation plate and an expansion connecting buckle, and the driving cylinder and the driving motor are integrated inside; the braided rope twisting component is matched with a ring-shaped iron ring through the electromagnet sleeve set, the quick opening and closing of a clamping jaw are controlled, and the accurate clamping of the braided rope is realized; the driving motor drives a rotating shaft to complete the twisting action through a shaft coupling, and the shaft coupling effectively reduces vibration; the heat dissipation plate is internally provided with an exhaust group, and cooperates with an aluminum alloy shell to improve the heat dissipation efficiency. The electromagnetic adsorption and mechanical transmission are combined, the problems of unstable clamping force, response lag and overheating of traditional equipment are solved, the component has the characteristics of fast response, high control precision and excellent heat dissipation performance, and is suitable for the twisting processing of braided ropes in textile machinery and automatic production lines.

This invention discloses a hybrid powertrain transmission device coupling an engine and an electric motor, including an engine, a generator, and a drive motor. A rotational transmission mechanism is provided between the drive motor and the wheels. A heat dissipation protection component is provided on the gearbox of the rotational transmission. The heat dissipation protection component includes a heat dissipation fin plate disposed inside the gearbox, an air duct communicating with the outside of the gearbox, and a heat dissipation fan and a lubricant spraying assembly disposed inside the air duct. The air duct is connected to the airflow channel of the heat dissipation fin plate. When the heat dissipation fan is working, the airflow generated flows through the heat dissipation fin plate to dissipate heat inside the gearbox. At the same time, the generated air pressure drives the lubricant spraying assembly to spray lubricant at the gear meshing position. In operation, the invention enables air to continuously flow through the heat dissipation fin plate by turning on the heat dissipation fan, thereby dissipating heat from the gearbox cavity and protecting the gears.

The utility model relates to an electric flip damper, motor assembly contains the casing of containing cabin, sealed connection rear end's motor rear cover and front end's motor front cover, and the motor front cover is equipped with the plug-in sealing joint part of extending to the front, and the stator core, rotor assembly and PCBA board are equipped in containing cabin, and the motor shaft of rotor assembly extends through plug-in sealing joint part, gear box connects motor front cover, and plug-in sealing joint part inserts gear box inner wall and forms sealed connection, and at least one planetary reduction mechanism is equipped in gear box, and its output end is connected output shaft, and the drive gear of motor shaft extension end fixation is located in gear box, and directly engages the input element of driving planetary reduction mechanism, the advantages are: plug-in sealing structure blocks the invasion of water vapor / dust, improves the reliability of severe environment, cancels the traditional flange connection, simplifies the assembly process, and reduces the processing / maintenance cost.