124 results about "Burnout" patented technology

The invention provides a drilling rig for geological exploration, and relates to the technical field of drilling, the drilling rig comprises a motor mounted on a lifting frame, the extending end of the motor is connected to an inner rod, an outer wheel is coaxially arranged outside the inner rod, a plurality of fixing rods are arranged at the upper end of the outer wheel at equal intervals, and the fixing rods are connected to the inner rod. The drilling device has the most prominent advantage that the drilling device has a unique anti-jamming protection mechanism, when a sampling pipe is jammed by a hard stratum or foreign matters in the drilling process, the sampling pipe can be prevented from being blocked by the anti-jamming protection mechanism, and the sampling pipe can be prevented from being blocked by the anti-jamming protection mechanism, so that the sampling pipe can be prevented from being blocked by the anti-jamming protection mechanism. Power transmission between the motor and the sampling pipe is not rigid connection any more, controlled separation is achieved through a designed combination of a gear system and a friction disc, the motor continues to operate, but not all torque is directly transmitted to the clamped sampling pipe, part of energy is converted into surrounding motion through a rotating wheel system, and therefore the sampling pipe can be separated. And the risk of burnout of the motor due to overload is effectively avoided.

A motor positive pressure waterproof structure, a motor and a waterproof control method are used for preventing water from entering the motor, the motor comprises a shell and a rotating shaft, a cavity is formed in the shell, and the positive pressure waterproof structure comprises a positive pressure section and a waterproof section which are arranged on the rotating shaft. The pressurization structure is arranged on the machine shell and corresponds to the positive pressure section, and the oil seal structure is arranged on the machine shell and corresponds to the waterproof section. According to the scheme, friction and loss between the rotating shaft and the oil seal deformation layer under high-speed operation are avoided, friction and loss between the rotating shaft and the oil seal deformation layer under low-speed operation and other working conditions are reduced, the service life of the oil seal structure is greatly prolonged, motor insulation damage and burnout caused by external water entering the motor are avoided, and the service life of the motor is prolonged. Stable pressure balance is formed in the motor cavity, the safety and reliability of the motor are improved, the service life of the motor is prolonged, and the stability of the motor is improved.

A toy vehicle apparatus for performing a burnout function includes a burnout panel mounted to a base. A vehicle model having a rotatable wheel is mounted to the base with the rotatable wheel lying on the burnout panel, which comprises an abrasive material. The vehicle model comprises a wheel motor for rotating the rotatable wheel with respect to a body of the vehicle model such that the rotatable wheel abrades against the burnout panel. The rotatable wheel comprises an abradable material such that particulates of the abradable material are emitted from the rotatable wheel when the rotatable wheel is abraded against the burnout panel. The particulates simulate or generate smoke similar to that generated in a burnout performed with a road vehicle.

The walking type battery needling robot comprises a vehicle body, a needling mechanism and an outer cover, the vehicle body comprises a chassis and AGV steering wheels arranged on the four sides of the bottom of the chassis, the needling mechanism comprises a needling driving mechanism and a needling needle, the top of the outer cover is provided with a needling window, and the needling needle extends out of the outer cover from the needling window. When the AGV steering wheel works, the chassis can be driven to walk, so that the needling robot can arrive at the position where the battery needling test needs to be carried out, and needling tests can be conveniently carried out on different battery positions. When a needling test is carried out, the battery is fixed above the lifting tool platform, the needling needle is driven by the needling driving mechanism to carry out a needling action on the battery, a worker does not need to carry the battery to a test device to carry out the needling test, the test process can be simplified, manpower is saved, and the work efficiency is improved. Therefore, corrosion and burnout of structural members at the bottom of the platform caused by battery leakage and fire are avoided, the test efficiency is improved, the effective working time and service life of test equipment are prolonged, and the equipment investment cost is reduced.

The invention relates to the technical field of fire-fighting equipment, in particular to a diaphragm fire-fighting water pump with an automatic pressure stabilizing function and application thereof.The diaphragm fire-fighting water pump comprises a water pump body, a pressure stabilizing pump is fixed to the front side of the water pump body, a pressure stabilizing tank is fixed to the right side of the pressure stabilizing pump, and a film is fixed to the middle of the pressure stabilizing tank; a pressure supplementing assembly is arranged in the upper half part of the surge tank and comprises a pressure supplementing plate, an abutting rod and a cylinder sleeve, the upper end of the abutting rod is slidably connected with the cylinder sleeve, and a pressure spring used for pressing the abutting rod downwards is arranged in the cylinder sleeve; a gear is rotationally connected to the outer wall of the sleeve, a toothed plate is fixed to the outer wall of the abutting rod, a transverse plate is fixed to the right side wall of the gear, and a metal sheet is arranged above the transverse plate. By arranging the pressure supplementing assembly, in winter, the abutting rod downwards presses the pressure supplementing plate to downwards press the thin film, the pressure lost due to temperature reduction above the thin film is supplemented, pipe network water pressure reduction caused by air pressure reduction in winter is prevented, and burnout of the stabilized pressure pump is avoided; and meanwhile, by arranging an adjusting structure, the pressure can be adjusted and supplemented according to actual conditions during use, so that the practicability is improved.

This utility model discloses a motorcycle lamp with a heat dissipation structure, including a lamp housing, an LED lamp assembly, a reflector, and a lens. The lamp housing consists of a detachable rear housing and a front housing. The reflector and lens are located in the front housing, and the LED lamp assembly is located in the reflector. Addressing the issues of limited space in motorcycle lamp covers and difficulty in heat dissipation for LED lamps, a lamp housing cooling fan is located at the rear end of the rear housing, while a vent and a movable cover are located on the lower front side. The fan's forced airflow and directional air circulation quickly remove heat from the LED lamps, controlling the lamp body temperature and preventing a decrease in luminous efficiency due to high temperatures, thus ensuring stable brightness. The movable cover allows for flexible opening and closing of the vent, balancing heat dissipation efficiency with protection against harsh environments, preventing moisture and dust from entering. This solves the problems of halogen lamps being prone to burnout and LED lamps having poor heat dissipation, improving driving safety. The detachable housing is suitable for small installation spaces, eliminating the need to completely disassemble the lamp cover during maintenance; only the front housing needs to be removed, simplifying the process and reducing costs.

To provide a technique capable of accurately determining execution timing of burnout.SOLUTION: A method for determining the timing to execute burnout in a vacuum carburizing furnace according to the present invention includes: a setting step of setting a reference range for the peak time difference, which is the time difference between the timing of a first pressure peak measured by a first pressure gauge among a plurality of pressure gauges that is equal to or greater than a predetermined threshold pressure, and the timing of a second pressure peak corresponding to the first pressure peak measured by a second pressure gauge different from the first pressure gauge, using the time-varying changes in each measured pressure in the vacuum carburizing furnace measured by the plurality of pressure gauges; an acquisition step of acquiring the time-varying changes in each measured pressure in the vacuum carburizing furnace after the setting step and acquiring the peak time difference; and a determination step of outputting that it is time to execute burnout if the peak time difference acquired in the acquisition step is outside the reference range.SELECTED DRAWING: Figure 2

The invention discloses a vehicle high-rotating-speed starting control method and device and a vehicle, according to the current high-rotating-speed starting state, the steering angle of a wheel distributed steering gear is actively controlled, so that all wheels are steered to a preset forward toe-in angle, a large starting axle forward toe-in angle is formed, the high-rotating-speed starting stability is enhanced, and in addition, the high-rotating-speed starting stability is improved. The driving torque of the left and right driving wheels of the vehicle and the yaw velocity of the whole vehicle are compared through the wheel speed difference between the real-time driving wheel speeds of the left and right driving wheels on the driving shaft, the unexpected steering trend state of the tire-burning high-rotating-speed starting vehicle is judged, and the rotating angles of the left and right wheels are dynamically controlled and superposed according to the unexpected steering trend of the tire-burning starting vehicle. And elimination of the unexpected yaw angle of the tire-burning high-rotation-speed starting vehicle is achieved.

The invention relates to the technical field of speed reduction motors, and discloses a motor integrated with a speed reducer, the motor comprises a motor shell and an end cover installed on the motor shell at an interval, a center shaft extending outwards is arranged in the middle of an inner cavity of the motor shell, a heat dissipation assembly is installed on one side of the end cover, and the heat dissipation assembly sleeves the outer side of the center shaft; an IPM motor is arranged in an inner cavity of the motor shell and arranged on the outer side of the center shaft in a sleeving mode, the heat dissipation assembly is arranged, an end cover is used for driving a rotating disc and a sleeving shaft to do reciprocating motion, a telescopic shaft is driven to control opening and closing of an air inlet groove and an air outlet groove, and automatic circulation heat dissipation of cold air suction and hot air exhaust is achieved; meanwhile, the heat dissipation fins are pushed by the telescopic shaft to make full contact with hot air, and the heat conduction efficiency is improved; according to the active heat dissipation mechanism, the internal temperature of the motor is effectively reduced, the problem of performance reduction or burnout caused by overheating is avoided, and the service life of the motor is remarkably prolonged.

The utility model relates to the technical field of production and processing equipment, and provides bean product processing equipment which comprises a tank body, a first rotating shaft is movably embedded in the inner surface of the tank body, a stirrer is fixedly installed on the side, close to the interior of the tank body, of the first rotating shaft, a first fixing block is fixedly connected to the top of the tank body, and a second fixing block is fixedly connected to the top of the tank body. A turbine is fixedly installed on the side, close to the interior of the first fixing block, of the first rotating shaft, an air guide pipe is fixedly connected to the outer surface of the first fixing block, a plurality of air guide holes are formed in the side, close to the first fixing block, of the tank body, and a second fixing block is fixedly installed at the top of the first rotating shaft. And a rotating shaft II is movably embedded in the inner surface of the fixed block II, so that the problems of high temperature in the motor and burnout of internal components caused by the fact that the motor is always in a full-load operation state are avoided, the service life of the motor is prolonged, the maintenance frequency of the motor is reduced to a certain extent, and a guarantee is provided for safe production to a certain extent.

The present invention provides a front axle separator structure and an automobile, belonging to the technical field of automobile parts, and comprising a separator housing, a driving member, a moving member, a connecting member and an adjusting member. A driving member and a moving member are provided in the separator housing, wherein the driving member drives the moving member to move; the connecting member is used to connect the front axle half-shaft and the mechanical wheel, one end of the connecting member is sleeved on the front axle half-shaft, and the other end is connected to the moving member; the adjusting member is used to rotate the connecting member, one end of the adjusting member is rotationally connected to the connecting member, and the other end is slidingly connected to the moving member. The front axle separator structure provided by the present invention can avoid the problem of motor burnout or front axle separator damage caused by repeatedly pressing the separator switch when the front axle half-shaft spline and the mechanical wheel spline are not aligned.

The invention discloses a multi-rotor unmanned aerial vehicle motor with a waterproof function, and relates to the technical field of motors. The multi-rotor unmanned aerial vehicle motor with the waterproof function comprises a protective shell, a power source and a bearing assembly, the bearing assembly comprises a threaded column and a bearing supporting plate, the top end of the threaded column is fixedly connected with the edge side of the bottom of the protective shell, the surface of the threaded column is sleeved with the bearing supporting plate through a round hole, and the top of the bearing supporting plate is fixedly connected with a rectangular sealing gasket; a locking nut is fixedly installed on the surface of the threaded column in a threaded mode, an annular conical inclined face is formed in the center of the bottom of the locking nut, a fastening nut is fixedly installed on the bottom of the surface of the threaded column in a threaded mode, a conical elastic piece is fixedly connected to the top of the fastening nut, and a V-shaped notch is formed in the surface of the conical elastic piece. The conical elastic piece is embedded into the V-shaped notch, the waterproof purpose is achieved, water can be prevented, short circuit burnout is not prone to being caused, noise transmission is weakened, transmission is stable, energy is saved, and safety and reliability are achieved.

The invention discloses an overload protection method, crushing equipment, a control device and a storage medium, and the overload protection method comprises the steps that a first motor and a second motor are controlled to rotate, and motor phase currents of the first motor and the second motor are obtained; when the phase current of any motor exceeds a first current threshold value and the duration time reaches a time threshold value, the first motor and the second motor are controlled to execute a reverse rotation step; in the reverse rotation step, when the phase current of any motor exceeds a second current threshold value, the first torque limiter and the second torque limiter are separated to disconnect transmission of the driving force between the first motor and the first rolling cutter assembly and transmission of the driving force between the second motor and the second rolling cutter assembly. The second current threshold is greater than the first current threshold; according to the design, overload protection is reasonable, the crushing efficiency is improved, the labor cost is reduced, timely protection is achieved in emergency, and the probability of motor burnout is reduced.

The utility model discloses a trepanning device convenient to install a towel rack, which relates to the technical field of towel rack processing and comprises a base, a fixing frame and a clamping table are arranged at the top of the base, a guide groove is arranged at the top of the clamping table, and an installation plate is fixed above the inside of the fixing frame through a hydraulic rod. By arranging the driving bevel gear, the driven bevel gear, the semiconductor chilling plate, the air pipe, the rotating shaft and the fan blades, when drilling work is carried out, the motor rotates to enable the driving shaft to rotate, so that the driving bevel gear and a drill bit can rotate, and the driving bevel gear can enable the driven bevel gear to rotate; the driven bevel gear rotates to enable the rotating shaft to drive the fan blades to rotate, the fan blades rotate to generate wind, the semiconductor chilling plate refrigerates the wind to form cold air, and the cold air can be blown to the motor through the air pipe, so that the purpose of cooling the motor is achieved, continuous rising of the temperature of the motor is avoided, the service life of the motor is prolonged, and the situation that the motor is burnt down is avoided.

This application provides a full-ocean-depth anti-stagnation underwater cutting device, belonging to the field of underwater device engineering application technology. It includes a drive unit, an inner magnetic coupler, an outer magnetic coupler, and a saw blade. The inner magnetic coupler is rigidly connected to the drive shaft. The inner and outer magnetic couplers transmit torque non-contactly through a magnetic field generated by a magnet, causing the saw blade and outer magnetic coupler to rotate synchronously for cutting. When the saw blade suddenly stops (stagnates) during underwater operation due to unexpected situations such as cutting foreign objects or getting stuck in gaps, the outer magnetic coupler stops rotating along with the saw blade. Since there is no rigid mechanical connection between the inner and outer magnetic couplers, only the shearing force of the magnetic field exists. At this time, the inner magnetic coupler and the drive shaft can continue to idle or rotate at low speed even when the outer magnetic coupler is stopped. This avoids stall damage to the drive unit caused by a sudden increase in load, such as overcurrent, overheating, or burnout, thus improving the reliability, durability, and safety of the cutting device in unpredictable and complex underwater environments.

The utility model relates to turbocharger technical field, concretely relates to a turbocharger built -in oil tank oil supply system, including oil inlet flange, flange assembly, gasket and bearing shell, the inside of bearing shell is provided with a plurality of built -in oil tank oil inlet pipeline and bearing shell intercommunication, gasket sets up between flange assembly and bearing shell, flange assembly includes connecting flange, throttle orifice plate, check valve piece and baffle ring, the surface of connecting flange is provided with oil inlet pressure measurement passageway and a plurality of built -in oil tank pressure measurement passageway, throttle orifice plate sets up in the inside of oil inlet pressure measurement passageway, baffle ring sets up at the end face of throttle orifice plate, the both sides of connecting flange are provided with pressure measurement hole stopper, through the setting of above -mentioned structure, the problem of turbocharger emergency shutdown when built -in oil tank system prevents electric pump failure, the rotor and bearing between the dry friction under the condition of insufficient or broken oil of the reduced amount of sliding oil, lead to bearing and rotor burnout, turbocharger failure has been solved.

The invention relates to the technical field of thermal power plant thermal control, and discloses an opposed firing boiler partial combustion situation awareness and active control method and system, and the method comprises the steps: obtaining a first prediction temperature of a target boiler; presetting a first judgment logic, and generating a second sensing signal of the target boiler according to the first predicted temperature and the first judgment logic; presetting a second judgment logic, and obtaining a third opening instruction and a fourth switch control instruction according to the second sensing signal in combination with the second judgment logic; and according to the third opening degree instruction and the fourth switch control instruction, the deviant combustion situation of the opposed firing boiler is perceived and actively controlled. Control lag caused by the large delay characteristic of the main steam temperature is overcome, the deviant combustion trend of the boiler is found in time, overheating / cooling of the main steam temperature is effectively prevented, a deviant combustion control strategy with over-fire air door control as the main and the over-fire air door auxiliary by the upper-layer coal mill is provided, the deviant combustion phenomenon of the opposed firing boiler is effectively restrained, and the service life of the opposed firing boiler is prolonged. And a foundation is laid for improving the flexible operation of a coal-fired unit.

This invention discloses a method and system for optimizing burnout air at full load in a coal-fired boiler. The method includes: acquiring the real-time load of the coal-fired boiler; determining the burnout air operation status based on a comparison of the real-time load with the first critical load, second critical load, and third critical load of the coal-fired boiler; in the first burnout air operation status, opening all burnout air layer regulating dampers, with the opening degree of each damper determined according to the optimal burnout air coefficient; in the second burnout air operation status, gradually closing the burnout air layer regulating dampers until the optimal two burnout air layer regulating dampers remain open; in the third burnout air operation status, leaving the optimal two burnout air layer regulating dampers open, and using hot primary air instead of hot secondary air as the burnout air source. This invention ensures full-load burnout air penetration while avoiding a significant increase in auxiliary equipment power consumption and reducing the risk of stalling of the primary air fan at low load.

The invention relates to the technical field of monitoring equipment, and provides a monitoring equipment control method and device, electronic equipment and a storage medium, and the method comprises the steps: receiving vehicle information sent by a camera device disposed at an entrance of a parking region, the vehicle information is obtained by shooting under the condition that the camera device detects that the first distance between the current vehicle and the entrance is smaller than a preset threshold value; determining the coverage range of the laser radar according to the configuration information of the laser radar corresponding to the vehicle information; determining a first monitoring device located in the coverage area from all monitoring devices in the parking area; and controlling the first monitoring device to turn to a target direction in which the laser radar cannot directly irradiate. According to the method, the first monitoring device can be intelligently regulated in advance to turn to the target direction which cannot be irradiated by the laser radar, and the probability of burnout and damage of the laser radar to the first monitoring device is effectively reduced.

The utility model discloses an electric laying and winding vehicle, and relates to the technical field of laying and winding vehicles. The laying and winding vehicle comprises a vehicle frame, a front axle, a rear axle, a steering structure, a tail plate, an electric laying and winding device and a control box. The frame comprises a bottom plate, a front pedal, a square tube frame, a tail pedal and a tail pedal frame; the bottom plate and the front pedal are welded on the square tube frame; the tail pedal is welded on the tail pedal frame; the front axle, the rear axle and the steering structure are welded to the bottom of the frame, the metal sleeve is welded to the end, close to the control box, of the frame, and the control box is welded in the square pipe frame. The square tube on the bottom plate is connected with an electric laying and winding device through a shaft fixing seat, and the tail plate is movably connected with the bottom plate. According to the device, laying and rolling of the coiled material can be achieved at the same time; an operator can keep the advancing direction of the vehicle straight, so that real-time observation is facilitated; and burnout of the driving motor due to overlarge torque can be effectively prevented.

The utility model relates to the technical field of centrifugal fans, and discloses a volute type centrifugal fan which comprises a machine frame and a fan body, the fan body is installed on the machine frame, an inlet clock is installed on the front side of the fan body, an air door mechanism is installed on the front side of the inlet clock, and the air door mechanism comprises an installation ring and a worm and gear box. A main air door plate, a left air door plate, a right air door plate and a plurality of auxiliary air door plates are rotatably mounted in the mounting ring, connecting seats are mounted on the outer sides of the main air door plate, the left air door plate, the right air door plate and the auxiliary air door plates, and the connecting seats are jointly connected with connecting rods; air inlet filter screens are mounted on the rear sides of the main air door plate, the left air door plate, the right air door plate and the auxiliary air door plates; the fan is provided with the air door mechanism capable of adjusting the air inlet amount, the air door mechanism can be closed when the fan is in cold start, the motor load is reduced, and motor overload burning loss caused by overlarge motor starting current is avoided.

The application discloses a kind of intercooler fault control method, device, equipment and medium, comprising: according to the current driving road information of vehicle and driving demand power information determines intercooler control level;According to intercooler control level determines battery valve opening parameter;According to the comparison result of intercooler temperature and ambient temperature with preset temperature respectively, the comparison result of intercooler humidity and ambient humidity with preset humidity respectively, and the comparison result of intercooler pressure and ambient pressure with preset pressure respectively, determine intercooler control information.The method can determine the control level of intercooler according to the current vehicle driving information, can timely and accurately find the abnormality of intercooler pressure, humidity, temperature and take measures, ECU enters idle condition, reduces engine injection amount, avoids excessive injection to cause catalytic converter burnout and catalytic converter abnormal high temperature radiation causes vehicle spontaneous combustion and intercooler filter element leakage will lead to the risk of water flow into cylinder damage engine.

The utility model relates to a sealed protection box based on the use in the water vapor environment belongs to the field of steel rolling technology. Including upper sealed casing and lower sealed casing, the upper sealed casing is opposite with lower sealed casing and is closed, and the both are provided with sealing element at the closing place, the upper sealed casing both sides surface is equipped with the oil inlet thread hole and the oil outlet thread hole, the oil inlet thread hole is equipped with the oil inlet pipe, the oil outlet thread hole is equipped with the oil outlet pipe, is equipped with the flow switch in the upper sealed casing, the oil inlet pipe, oil outlet pipe are connected with flow switch respectively, the upper sealed casing side surface still is equipped with wiring thread hole, is equipped with wiring pipe on the wiring thread hole, the plug line of flow switch leads out through wiring thread hole, wiring pipe and is connected with the junction box electricity, be equipped with upper dehumidification layer and lower dehumidification layer in the lower sealed casing. The flow switch is completely isolated with the outside environment in this application, makes the flow switch normal detection and timely sends out the alarm, avoids the support roll burnout, prolongs the service life of support roll.

An embodiment method for controlling a compressor of a vehicle includes selectively controlling an operation of the compressor by determining and comparing a discharge pressure of the compressor and a temperature of an inverter with predetermined values based on data detected in real time when the compressor is operated to cool or heat an interior of the vehicle and operating a protection mode to prevent thermal burnout of the inverter in response to a determination that the discharge pressure of the compressor is higher than an operation stop pressure.

The utility model discloses a secondary air rigidity and tangent circle double-adjusting device of a tangent circle boiler, which belongs to the technical field of boiler combustion and comprises a secondary air nozzle and an adjusting baffle plate, a partition plate is vertically arranged on the inner wall of the boiler inner end of the secondary air nozzle, the partition plate is rotatably connected with the adjusting baffle plate through a rotating shaft, and the adjusting baffle plate is rotatably connected with the secondary air nozzle. And one end of the rotating shaft extends out of the secondary air nozzle and is connected with a transmission assembly. The adjusting baffle is arranged in the secondary air nozzle and is connected with the external air cylinder through the rotating shaft, the crank and the connecting rod, so that the air cylinder drives the adjusting baffle to continuously adjust the angle on any side in an online manner, and the size of a tangent circle and the rigidity and the speed of jet flow are adaptively adjusted; a series of problems of low-load partial combustion, high pollutant emission, coking and the like of the boiler are effectively avoided, and the coal adaptability of the boiler is improved; the small holes are formed in the adjusting baffle, it is guaranteed that airflow still passes through the blocked side of the nozzle, high-temperature burning loss is prevented, and the service life of the nozzle is prolonged.

The invention relates to the technical field of passenger car instrument desks, in particular to an instrument desk and a vehicle, the instrument desk comprises a heat dissipation assembly, the heat dissipation assembly comprises a fan blade part, a first wiping part and a heat dissipation grid, the heat dissipation grid and the fan blade part are oppositely arranged in the first direction, and the first wiping part is arranged between the heat dissipation assembly and the heat dissipation grid; at least part of the first wiping part can move in the second direction relative to the heat dissipation grid and is used for wiping the heat dissipation grid, and the second direction intersects with the first direction. According to the instrument desk and the vehicle, the heat dissipation efficiency of the instrument desk is effectively improved, and stable operation of the instrument desk is guaranteed due to data deviation, response delay and even burnout faults caused by high temperature; therefore, the heat dissipation channel is always smooth, the vicious cycle of'heat dissipation efficiency reduction-internal temperature rise-element failure 'caused by grid blockage is avoided, and the long-term efficient heat dissipation performance of the heat dissipation assembly is maintained.

The utility model relates to a connecting device for a wind power tubular bus and a junction box. The connecting device comprises the junction box, a fixed clamping mechanism arranged in the junction box and used for connecting the tubular bus, and a damping mounting mechanism arranged outside the junction box and used for fixing the tubular bus. The damping mounting mechanism comprises a lower mounting assembly and an upper mounting assembly, the lower mounting assembly comprises a mounting shell, a fixing lug plate used for being connected with the upper mounting assembly is fixedly arranged on the outer side of the mounting shell, a mounting groove is formed in the mounting shell, a mounting block is slidably connected in the mounting groove, a damping spring is arranged in the mounting groove, and one end of the damping spring is fixedly connected with the mounting block. One end of the mounting block is fixedly connected with the mounting shell, the other end of the mounting block is fixedly connected with the mounting shell, the mounting block is provided with a placing groove for placing the tubular bus, the mounting block is provided with a connecting plate for connecting the upper mounting assembly, and the upper mounting assembly and the lower mounting assembly have the same structure. According to the invention, the connection stability of the tubular bus and the junction box is improved, and burnout accidents of a power transmission line are reduced.

Provided are a spreading apparatus (020) and system (110) and an unmanned device. The spreading apparatus (020) can be applied to a spreading system (110) of an unmanned device. The spreading apparatus (020) comprises a motor (200), a throwing disc (300) and an elastic mechanism (500); the throwing disc (300) is connected to an output shaft of the motor (200); when the spreading apparatus (020) works, by means of forward and reverse rotation, the output shaft of the motor (200) drives the throwing disc (300) to swing back and forth; when the throwing disc (300) swings, the elastic mechanism (500) is used for absorbing the kinetic energy of the throwing disc (300) and thus deforming elastically and, when releasing elastic potential energy, the elastic mechanism (500) is used for driving the throwing disc (300) to swing reversely. The spreading apparatus (020) can reduce the power consumption of the motor (200) and ameliorate the problem of serious heat generation of the motor (200), thereby helping to increase the endurance of a battery that supplies electric energy to the motor (200), and effectively ameliorating the problem of burnout of the motor (200).

This application belongs to the field of aero-engine design and is a method for determining low-pressure rotor seizure in a low-bypass ratio aero-engine. By first performing an engine start test, the speed NH of the high-pressure rotor corresponding to the low-pressure rotor's stable speed is determined, and the relative conversion speed nHR_D of the seizure is further determined. 判 Then control the engine to work according to the set high-pressure rotor speed increase rate, and obtain the corresponding actual conversion speed nHR_D of the shaft under different high-pressure rotor speed increase rates. 实 By setting criteria for complete and incomplete rotor sticking and validating them during an engine start test, successful validation indicates the criteria are valid, and both criteria are written into the CNC system. By combining speed control and speed rise rate control during the engine start process to form a combined criterion, it is possible to effectively identify low-pressure rotor seizure during the test run and prevent engine casing burnout caused by seizure.