79results about How to "Efficient drive" patented technology

The invention discloses an automatic driving control method, device and equipment based on potential world model guidance and a storage medium, and relates to the technical field of automatic driving, and the automatic driving control method based on potential world model guidance comprises the steps: obtaining sensor data, vehicle image data and vehicle navigation information; performing data fusion based on the sensor data and the vehicle navigation information to obtain vehicle planning data; performing feature extraction based on the vehicle image data and a preset world model to obtain a current frame feature map and a target future frame feature map; and obtaining predicted trajectory data based on the vehicle planning data, the current frame feature map and the target future frame feature map, so that the vehicle completes automatic driving control according to the predicted trajectory data. According to the invention, the planning accuracy of the automatic driving vehicle in the dynamic traffic environment is improved, and the prediction capability of future environment change is enhanced, so that the safety of an automatic driving system is improved.

The invention relates to the technical field of automatic loading and unloading of logistics forklifts, in particular to a novel automatic loading and unloading system of an unmanned forklift in a van environment, and the system comprises a positioning map binding module which is used for binding platform areas where a plurality of trucks are parked on a positioning map; and the task issuing module is configured to receive a task issued by a driver through a pad system when a truck arrives and transmit the task to a warehouse management system (WMS), and the WMS issues a cargo taking and placing task of a corresponding map point position according to a platform number. And the visual servo system adopting the solid-state laser radar provides high-precision and high-stability navigation capability for the AGV.

The invention relates to the field of information technology application, and discloses a product manufacturing whole process BOM data structured construction method and related equipment, and the method comprises the steps: obtaining defect BOM data of an order output result of an ERP system; according to the defect BOM data, data features of ABOM, MBOM and EBOM are reversely analyzed and traced, and an analysis result is obtained; according to the analysis result, the ABOM, the MBOM and the EBOM are reconstructed to obtain a BOM data structure; the BOM data structure transmits the obtained data features to an ERP system, and BOM data structured construction work in the whole product manufacturing process is completed. According to the method, result defect BOM data is output through an enterprise resource planning system, BOM data characteristics in various BOM data driving business operation are reversely analyzed, difference removal, same storage and combination are carried out, a product design source EBOM model is reconstructed, and finally a'three-in-one 'simplified new BOM reconstruction model for driving enterprise business operation based on the source EBOM as a product digital main line is realized.

The invention provides a display device and a driving circuit thereof, and the driving circuit comprises a gate driving circuit which comprises a plurality of cascaded shift registers and is used for providing a row driving signal for a pixel circuit of the display device; the power management circuit is used for generating a power voltage signal; the time sequence control circuit is connected with the power supply management circuit and is used for generating a time sequence reference voltage signal based on the time sequence working voltage signal provided by the power supply management circuit; and the voltage conversion circuit is connected with the power supply management circuit, the time sequence control circuit and the shift register, and is used for obtaining a target voltage signal based on the power supply voltage signal and converting the time sequence reference voltage signal into a driving voltage signal based on the target voltage signal so as to drive the shift register. The voltage conversion of the gate driving signal can be realized, different driving voltage requirements are met, and the overall energy consumption is reduced.

The large-diameter double-spring safety valve comprises a valve body, a water inlet channel, a water outlet channel, a valve rod and a valve seat arranged on the water inlet channel are arranged in the valve body, the valve rod is sleeved with a valve clack which is connected with the valve seat in a sealed mode and used for controlling the communication state of the water inlet channel and the water outlet channel, and a first installation cavity is formed in the water inlet channel. A diaphragm and a first magnetic part are arranged in the first installation cavity, the valve rod comprises an upper valve rod body and a lower valve rod body, a second installation cavity is formed in the upper valve rod body, a second magnetic part is arranged in the second installation cavity, and the first magnetic part and the second magnetic part are arranged in a magnetic pole repelling mode. After water enters the water inlet channel, the diaphragm is driven to move, then the first magnetic piece is moved, the second magnetic piece repelling the first magnetic piece abuts against the upper valve rod through repelling magnetic force, and the upper valve rod moves to drive the valve clack to open the water inlet channel and the water outlet channel to communicate for water outlet.

The invention discloses a driving control system and a driving control method of a picosecond laser seed source, and belongs to the field of picosecond laser seed sources. The Peltier control adjusting circuit adjusts the driving power of the Peltier driving circuit according to the temperature state signal and the target temperature by utilizing a PID dynamic adjusting method, and the Peltier adjusts the real-time temperature of the seed source so that the environment temperature of the seed source is maintained at the target temperature; the seed source control adjusting circuit judges whether the temperature state signal meets the working condition of the seed source or not; and the seed source output feedback circuit feeds the driving current signal back to the seed source control and regulation circuit in real time and integrates the target driving current signal and the output driving current signal to control the seed source driving circuit. According to the invention, the working environment temperature of the seed source is accurately and dynamically adjusted in real time and the working delay is set, so that parameters such as waveform uniformity of electric pulses output in a high-frequency working state can meet the use requirements of laser equipment.

The invention relates to the technical field of aging test devices, in particular to a miniature inverter aging test device, which comprises a test seat and a mounting seat, and is characterized in that the mounting seat is provided with a mounting plate electrically connected with an inverter, and the mounting plate is provided with a plurality of slots; a plurality of joints are arranged on the test seat; driving assemblies are arranged at the two ends of the testing seat in the length direction. The driving assembly comprises two clamping arms, two first pulleys are arranged at each of the two ends of the mounting plate, and the clamping arms in the driving assembly are matched with the first pulleys, so that movement of the mounting seat can be accurately controlled, stable and accurate butt joint of a slot and a joint between the mounting plate and the test seat can be ensured, and the test efficiency is improved. Therefore, the problem of test errors caused by poor contact or unstable plugging in the prior art is solved. The structure is compact, and efficient driving and stable connection can be completed in a limited space. And compared with a traditional pressing device, the occupied space is reduced.

The invention belongs to the technical field of synthesis of 2, 3-dipicolinic acid, and relates to a catalyst for synthesizing 2, 3-dipicolinic acid as well as a preparation method and application thereof, the catalyst is prepared from a carrier, and active components and auxiliaries loaded on the carrier; the carrier is boron nitride modified aluminum oxide, the active component is palladium-cobalt bimetal, and the auxiliary agent is magnesium; the catalyst comprises the following components in percentage by mass: 0.2 wt%-3wt% of palladium, 0.5 wt%-4wt% of cobalt, 0.05 wt%-0.3 wt% of magnesium, 5wt%-15wt% of boron nitride and the balance of an aluminum oxide carrier. The catalyst is prepared by adopting an ultrasonic-assisted sol-gel method, so that high dispersion and strong interaction of active components are realized. The catalyst shows high catalytic activity, high selectivity and excellent stability in a dichloropyridine carbonylation reaction, carbon monoxide is used as a carbonyl source, the atom economy is high, and the green chemical requirement is met.

The utility model discloses a cable sealing performance detection device comprising a detection box, the upper and lower parts of the detection box are provided with oil cylinders through supporting rods, and one side of each oil cylinder is provided with an air cylinder; the limiting mechanism is mounted on the inner side of the oil cylinder; the connecting cylinder is mounted on the inner side of the detection box through a rod piece; and the adjusting mechanism is positioned above the detection box. The cable drum is driven to rotate through the adjusting mechanism and the driving element, so that a cable is slowly wound and wound, the weight is added to the outer side of the limiting rod, and therefore the weight can effectively extrude the extrusion plate and water in cooperation with the spring; compared with the existing detection equipment, the sealing performance detection equipment has the advantage that the sealing performance detection equipment can be used for carrying out effective adjustment on cables of different materials and different diameters during the sealing performance detection of the cables of different materials and different diameters.

The utility model discloses a swing leaf structure of air conditioner cabinet, including swing leaf body still include the extension plate of swing leaf body one end end part, be provided with swing leaf drive subassembly on the fixed extension plate, swing leaf drive subassembly includes drive block, crank and bolt, drive block is fixed on the extension plate, and drive block is provided with the drive hole parallel to swing leaf body length direction and the pinhole perpendicular to drive hole, and drive hole is communicated with pinhole, one end of crank is provided with the radial extension lock hole, and the other end of crank is equipped with the axial extension motor connecting hole, and crank inserts drive hole, and lock hole is aligned with pinhole, and the plug -in cooperation is formed to bolt and lock hole and pinhole. The relative position of swing leaf and crank is effectively fixed, and swing leaf and crank connection stability, can not happen other relative motion, effectively strengthened the assembly intensity between swing leaf and crank, makes crank can steady drive swing leaf operation, and the clearance between swing leaf and face frame can not change, ensures the stability of air conditioner swing leaf operation.

The invention belongs to the technical field of medical equipment, and provides an automatic smear machine. The automatic smear machine comprises a smear machine main body, the coating assembly is mounted on the smearing machine main body; the coating assembly comprises a main coating pipe, one end of the main coating pipe is communicated with the smearing machine main body, and the other end of the main coating pipe is communicated with a sheet to be coated; the rotary spraying device is installed in the coating assembly, and the rotary spraying device comprises a fixed ring block, a driving piece and a rotating ring block; the fixed ring block is provided with a mounting ring groove, the driving piece is mounted in the mounting ring groove, and the rotating ring block is rotationally mounted in the fixed ring block; the driving part comprises electromagnetic blocks, the electromagnetic blocks are uniformly distributed in the mounting ring groove, and the electromagnetic blocks are communicated with an external power supply and drive the rotating ring block to rotate; wherein three electromagnetic blocks are electrified at intervals, and only one electromagnetic block is electrified at any moment.

The utility model relates to the technical field of pipe fitting machining, and discloses a pipe fitting welding device which comprises a bottom plate, bearing blocks are fixedly connected to the two sides of the upper surface of the bottom plate, inner grooves are formed in the bearing blocks, inner frames are rotationally connected to the interiors of the inner grooves, and fixing mechanisms are arranged in the inner frames. The fixing mechanism comprises a connecting frame, a threaded rod, a top block, a sponge block, a fixing rod, a spring and a connecting rod, the upper surface of the connecting frame is fixedly connected with the top of the interior of the inner frame, the outer surface of the threaded rod is in threaded connection with the interior of the connecting frame, and the upper surface of the top block is fixedly connected with the lower end of the threaded rod. According to the pipe fitting welding equipment, two sets of pipe fittings to be welded can be effectively and relatively fixed, later welding is facilitated, meanwhile, the pipe fitting welding equipment can adapt to pipe fittings with different diameters, and when the two sets of pipe fittings are fixed, the pipe fittings can be located on the same straight line by rotating the threaded rods by the same length.

The invention relates to the technical field of petroleum drilling, in particular to a while-drilling mud pulser solenoid valve driving method based on a CPLD (complex programmable logic device), which comprises the following steps: respectively determining PWM (pulse-width modulation) control parameters of a quick starting stage, a current adjusting stage and a pull-in keeping stage of a solenoid valve according to the depth of a well where a target solenoid valve is located; the CPLD driving module controls and outputs an initial starting voltage signal, controls and outputs a current driving waveform according to the PWM control parameter in the quick starting stage, controls and outputs the current driving waveform according to the PWM control parameter in the current adjusting stage, controls and outputs the current driving waveform according to the PWM control parameter in the pull-in maintaining stage, and lasts for a preset time; and electromagnetic valve driving of the while-drilling mud pulser is completed. The problems that when wireless measurement while drilling signals are transmitted in the prior art, due to the fact that the well depth is too large, the quality of electric signals for controlling an electromagnetic valve is affected, the electromagnetic valve cannot be effectively driven to be opened or closed, and mud positive pulse pressure waves are delayed and inaccurate are solved.

The present invention relates to the field of submersible power technology, in particular to a submersible motor magnetic conduction ultra-quiet speed change device, comprising a closed cavity, a driving wheel set rotatably arranged in the closed cavity, and a speed change wheel set; the driving wheel set comprises a driving shaft and a driving wheel frame, the driving wheel frame is rotatably arranged in the closed cavity through the driving shaft, a driving wheel disc is arranged at the periphery of the driving wheel frame, and a plurality of driving magnetic groups are arranged circumferentially on the driving wheel disc; the speed change wheel set comprises a speed change shaft and a speed change wheel frame, the speed change wheel frame is rotatably arranged in the closed cavity through the speed change shaft, a speed change wheel disc is arranged at the periphery of the speed change wheel frame, and a plurality of speed change magnetic groups are arranged circumferentially on the outer diameter of the speed change wheel disc. The present invention realizes the complete sealing of the transmission reduction structure, protects the internal transmission structure, and is also suitable for underwater motor reduction transmission, and has strong practicality.

The utility model discloses an electric wheelchair convenient to disassemble, and relates to the technical field of electric wheelchairs. The wheelchair comprises a wheelchair body, a power box is fixedly connected to the bottom of the wheelchair body, a driving mechanism is arranged in the power box and comprises a main shaft, a gear ring is fixedly connected to the main shaft, a gear of the gear ring is meshed with a transmission gear, and a mounting plate is fixedly connected to one side of the bottom of the power box. According to the electric wheelchair, the power box and the driving mechanism are arranged, efficient driving of the electric wheelchair is achieved, the driving mechanism comprises a main shaft, a gear ring, a transmission gear and the like which are matched with one another, smooth transmission of power is guaranteed, and the driving mechanism is convenient to use and high in practicability. And the equipment is easily disassembled through the pull rod when needed, so that the dead weight of the equipment when the motor and the battery are not needed is reduced, and people with insufficient strength can easily push the wheelchair.

The utility model discloses a gear with an anti-reversion structure, which relates to the technical field of anti-reversion gears and comprises a gear ring. Outer teeth are integrally arranged on the outer side of the toothed ring; inner teeth are arranged on the inner side; the inner teeth are arranged at intervals; the inner teeth are meshed with the matching teeth; the matching teeth are integrally arranged at the edge position of the anti-reversion sheet; the anti-reversal sheets are arranged in a fan shape; one side, far away from the matching teeth, of the anti-reversion sheet is connected with the ferrule through a connecting shaft; a groove is formed in the edge of the ferrule; during use, the ferrule is installed outside the bearing, the sleeve is effectively driven through cooperation between the bearing and the rotating shaft, when the sleeve rotates, the anti-reversion sheets movably installed on the edge of the sleeve achieve translation from the deep end with the groove to the shallow end under cooperation of the connecting shaft and the groove, and when the anti-reversion sheets move, the anti-reversion sheets are driven to rotate. Matching between the matching teeth and the inner teeth is achieved, and the gear ring drives the outer teeth to conduct rotation transmission.

The invention discloses a control method for operation equipment and a related device, and relates to the technical field of operation equipment. The control method comprises the following steps: determining a driving path and a target end point based on environment information collected by operation equipment; determining a first distance between the current position of the operation equipment and the target end point; based on a comparison result between the first distance and a preset threshold value, adopting a first control strategy or a second control strategy to drive the operation equipment to move, wherein under the condition that the first distance is greater than the preset threshold value, path tracking is carried out along the driving path by adopting the first control strategy; and under the condition that the first distance is smaller than or equal to the preset threshold value, switching to the second control strategy to enable the operation equipment to move to the target end point. According to the invention, the operation precision of the unmanned forklift in a complex outdoor scene can be improved.

The present invention relates to a pixel circuit. The pixel circuit includes: a light-emitting element; a driving transistor including a first electrode, a second electrode and a gate electrode, the first electrode being electrically connected to the light-emitting element; a second transistor including a first electrode electrically connected to a line transmitting a power supply voltage, a second electrode electrically connected to the second electrode of the driving transistor, and a gate electrode receiving a first signal; a third transistor including a first electrode electrically connected to the second electrode of the driving transistor, a second electrode electrically connected to the gate electrode of the driving transistor, and a gate electrode receiving a second signal; a storage capacitor including a first electrode and a second electrode, the first electrode of the storage capacitor being electrically connected to the gate electrode of the driving transistor; and a switching transistor including a first electrode, a second electrode and a gate electrode receiving a third signal, the first electrode of the switching transistor being electrically connected to a data line.

The invention provides an embedded time sequence architecture operation system and operation method based on a DSP chip, the system comprises a power module and a control module, the power module is connected to the control module, the power module is used for electric energy conversion, the control module is used for operation distribution, and floating point operation and fixed point operation of distribution are executed in a CLA and a CPU respectively. The power module (responsible for electric energy conversion) and the control module (responsible for operation distribution) are separated, so that modular design is realized, and maintenance and upgrading of the system are facilitated. And distribution of floating point operation and fixed point operation: the CLA (control law accelerator) and the CPU of the DSP chip are utilized to distribute the floating point operation and the fixed point operation, so that the computing power of the DSP chip is fully exerted, and the overall efficiency of system data processing and logic operation is improved.

The utility model belongs to the technical field of cuttlefish hatching devices, and particularly relates to a sepiella maindroni seaborne hatching device which comprises a net cage incubator, the net cage incubator is composed of a frame and a net bag, an inverted-L-shaped connecting base is fixedly installed at the top of the net cage incubator, and an electric push rod is fixedly installed on one face of the connecting base. A hollow fixed cylinder is fixedly mounted on one side of the mesh cage incubator, and liquid is stored in the fixed cylinder; when the sepiella maindroni fertilized eggs are hatched, the sepiella maindroni fertilized eggs are quickly sprayed to the mesh cage incubator through the through holes in the fixing frame, so that the fish schools are driven, the sepiella maindroni fertilized eggs are prevented from being ingested by the peripheral fish schools, normal hatching of the sepiella maindroni fertilized eggs is guaranteed, and hatching efficiency is improved.

This invention relates to a microfluidic chip driven by acoustically excited droplet-shaped microbubbles and its fabrication process. A droplet-shaped microbubble array is obtained through microfluidic chip structure design. Under acoustic excitation, the microbubbles oscillate, generating asymmetric acoustic-flow vortices, which in turn directionally drive the microfluidic fluid within the microchannels. The flow rate can be linearly controlled by adjusting the driving voltage, offering advantages such as non-contact, pollution-free, and highly efficient directional driving. The fabrication process is based on MEMS technology, employing nitrogen plasma bonding and soft lithography, resulting in low cost and suitability for mass production. This invention solves the problem of the lack of directionality in traditional symmetrical acoustic-flow vortices and can be widely applied in fields such as biomedicine, drug delivery, and chemical analysis.

The present invention relates to the field of automatic driving technology, and provides an unmanned vehicle automatic formation system and method, a data acquisition module, used to obtain the driving environment and the number of slave vehicles of the unmanned vehicle; a driving formation determination module, used to determine the driving formation of the unmanned vehicle according to the relative position of the slave vehicle in the formation formation and the navigation trajectory data of the master vehicle; a formation recovery module, used to identify the formation position of the task vehicle, and set the formation recovery rules of the unmanned vehicle in combination with the trajectory prediction network of the side vehicle; a predicament perception module, used to perceive the vehicle driving state and environmental change trend of the unmanned vehicle, and set the predicament perception mode of the unmanned vehicle; a single vehicle escape module, used to identify the abnormal situation of the unmanned vehicle, and set the single vehicle escape mechanism of the unmanned vehicle; an automatic formation module, used for the automatic formation processing of the unmanned vehicle, and obtain the automatic formation result. The present invention is to improve the self-escaping ability of the unmanned vehicle.

The application discloses a kind of digital tube driving systems based on time division multiplexing switch array, it is related to LED digital tube driving technical field.The application discloses a kind of digital tube driving systems based on time division multiplexing switch array, it is related to LED digital tube driving technical field.The application discloses a kind of digital tube driving systems based on time division multiplexing switch array, it is related to LED digital tube driving technical field.The application discloses a kind of digital tube driving systems based on time division multiplexing switch array, it is related to LED digital tube driving technical field.The application discloses a kind of digital tube driving systems based on time division multiplexing switch array, it is related to LED digital tube driving technical field.The application discloses a kind of digital tube driving systems based on time division multiplexing switch array, it is related to LED digital tube driving technical field.The application discloses a kind of digital tube driving systems based on time division multiplexing switch array, it is related to LED digital tube driving technical field.The application discloses a kind of digital tube driving systems based on time division multiplexing switch array, it is related to LED digital tube driving technical field.The application discloses a kind of digital tube driving systems based on time division multiplexing switch array, it is related to LED digital tube driving technical field.The application discloses a kind of digital tube driving systems based on time division multiplexing switch array, it is related to LED digital tube driving technical field.The application discloses a kind of digital tube driving systems based on

The utility model relates to solenoid valve technical field especially relates to a double ring guide solenoid valve with prevent deviation redundant structure, include: valve body, valve seat, diaphragm mechanism includes the diaphragm subassembly that opens the air hole, the pilot seat of setting in the air hole, and the diaphragm subassembly has membrane hole, static core mechanism includes the diaphragm tube and static core body, moving core mechanism includes moving core body and the guide subassembly of periphery, tension spring connects between moving core body and pilot seat, spring connects between static core body and moving core body, the guide subassembly includes the first guide ring close to static core one end, the second guide ring close to pilot seat, and moving core body and diaphragm tube have the clearance between, the through -hole sets up on the moving core body wall between the second guide ring and pilot seat. The utility model reduces the contact friction of moving core body and diaphragm tube inner wall through the guide subassembly, to improve the service life and reliability of solenoid valve.

The invention discloses a fully automatic wire threader for power distribution inner wires, comprising: a lifting platform, a fixing plate, a positioning rod, a friction wheel, a threaded tube, a protective tube and a spherical probe; the fixing plate is fixedly connected to the lifting platform, and a fixing nut is arranged on the fixing plate; the positioning rod is movably connected to the lifting platform; the friction wheel is connected to the positioning rod, so that the positioning rod drives the friction wheel to contact with the threaded tube, and when the friction wheel rotates, the threaded tube is driven to rotate by friction force; the threads on the threaded tube are matched with the fixing nut, so that the threaded tube moves when it rotates; the protective tube is placed inside the threaded tube; the spherical probe is detachably connected to the end of the threaded tube, and the diameter of the spherical probe is larger than the diameter of the threaded tube. The fully automatic wire threader for power distribution inner wires of the invention has a simple structure, is easy to carry, and has a low cost. It can also realize fully automatic threading operation. One person can complete the threading operation, which saves a lot of manpower and material resources, so that the fully automatic wire threader for power distribution inner wires of the invention has a wider range of applications and greater market promotion value.

The present application discloses a motor driving method and system, and an electronic device. The motor driving method includes: obtaining the current audio of the current game, obtaining the relative frame count of the current audio; obtaining the target identifier and the current trigger factor number of the current game interface; the target identifier represents the sign information of the control target in the current game interface; the current trigger factor number represents the number of factors that trigger vibration included in the current game interface; determining the number of vibrations according to the current trigger factor number; the number of vibrations is used to record the remaining number of motor vibrations in the current game; if the relative frame count and the number of vibrations meet the driving conditions, the motor vibration is driven according to the vibration waveform corresponding to the target identifier. It can effectively drive the motor to vibrate, prevent the occurrence of conditions that affect the vibration effect, such as leakage vibration, false vibration and / or uneven vibration, improve the vibration effect, and thus improve the user experience brought by the game product.

The utility model relates to the technical field of cleaning supplies, in particular to a portable water squeezing mop which comprises a main rod, a holding and pressing mechanism fixed on the main rod and a transmission mechanism located on the main rod, a sliding block is connected between the holding and pressing mechanism and the transmission mechanism in a pivoted mode, and the sliding block is connected to the main rod in a sliding mode. The holding and pressing mechanism comprises a positioning rod pivoted to the main rod, an auxiliary rod pivoted to the main rod, a horizontal grab handle pivoted between the positioning rod and the auxiliary rod and a first transmission rod pivoted to the end of the horizontal grab handle, and the end, away from the horizontal grab handle, of the first transmission rod is pivoted to the sliding block. The positioning rod, the auxiliary rod and the horizontal grab handle form a parallelogram relation relative to the main rod; the first transmission rod and the auxiliary rod form an axial symmetry relation. According to the portable water squeezing mop, the mechanism of the grab handle is optimized, the pressing distance is short, the squeezing force transmission effect is good, the overall structure is compact, the occupied space is small, storage is convenient, more labor is saved and comfort is achieved when the mop is used, and the water squeezing effect is effectively improved.

A paddy field wheel directly driven by a motor is provided with a steering motor (1), a motor frame (2), a paddy field wheel (3), a paddy field frame (4), a paddy field surface (5) and seedlings (6). A moving motor (21) and a motor reduction gearbox (22); and a shaft (31). The paddy wheel (3) is in an outwards-protruding dinner plate shape, the motor frame (2) is of a Z-shaped structure, the motor reduction gearbox (22) driven by the moving motor (21) is placed in an inwards-concave plate of the paddy wheel (3) and directly drives the paddy wheel (3), and the moving motor (21) is located on a shaft of the paddy wheel (3). The steering motor (1) is located above the motor frame (2) and drives the paddy wheel (3) to rotate so as to drive the paddy vehicle to steer. The paddy field vehicle is directly driven by the motor and the reduction gearbox, the reliability is good, and the driving chain is short. The paddy field vehicle wheels advance among the seedlings, the motor and the reduction gearbox can effectively avoid the seedlings, and the seedling survival rate is increased.

This invention relates to the field of motor technology and discloses a high-power-density permanent magnet motor for unmanned aerial vehicles (UAVs). The motor includes a stator with a winding section and a frequency conversion section. The winding section is arranged in a ring array around the center of the stator, allowing for different coil combinations on a single winding. The winding section includes slots A, B, and C. Slot A is located on the inner wall of the stator, while slots B and C are located on the stator itself. The inner wall of the stator also has inlet holes A, B, and C. Inlet holes A and B communicate with slot A, and inlet holes B and B communicate with slot B. The motor employs a wide-range speed control to adapt to UAV operating conditions, featuring a six-speed adjustment function. The rated speed ranges from 8 r / min (8 Hz) to 48 r / min (48 Hz), and the speed ratio can reach 1:8 during weak field operation. This allows for precise matching of the power requirements of different stages of UAV operation, such as takeoff, cruise, and high-speed flight, achieving full operating condition coverage without motor replacement.

The utility model provides a dust falling device for constructional engineering. The constructional engineering dust falling device comprises a base, a rotating disc is rotationally arranged above the base, a box body is arranged at the top of the rotating disc, a stirring rod is rotationally arranged in the box body, a limiting ring is arranged above the box body, and a plurality of spraying pipes are arranged on the two sides of the box body respectively. The building engineering dust falling device has the advantages of being movable, fixable, wide in dust falling range, high in controllability and high in dust falling efficiency.