33results about How to "Prevent flying car" patented technology

The invention relates to an electric vehicle with an automatic wave function. A single-chip microcomputer circuit with an automatic wave function program, a driving circuit, a Hall sensing signal input terminal, a negative electro-dynamic potential collecting and processing circuit, a speed regulation input terminal, a brake signal input terminal and a gear signal input terminal are arranged on an electronic circuit board of a controller of the electric vehicle; the single-chip microcomputer circuit with the automatic wave function program is used for detecting signals fed back or output through the above functional circuits to identify the difficulties during abrupt slope climbing, overload driving, accelerated starting or overtaking and the requirement of increasing the power under different speed conditions during pushing or driving, and a high-power gear is switched through an automatic wave; after abrupt slope climbing, overload unloading, accelerated starting or overtaking driving brake, an economic gear is switched through the automatic wave. When the circuit of the electric vehicle breaks down, a low speed gear is switched through the automatic wave for continuously safe driving; failure modes can be promoted through voice loudspeaker, so that failures are temporarily and automatically repaired, and the electric vehicle drives at a low speed.

The invention discloses an anti-runaway protection system and method for a downward belt conveyor. The protection system comprises a damping device, a hydraulic execution subsystem and a control subsystem, wherein the damping device is used for braking running of the belt conveyor mounted on a downward inclined surface in parallel; the hydraulic execution subsystem is used for driving the damping device to move; the control subsystem is used for detecting and controlling the running state of the belt conveyor in real time; and the system is convenient to mount and operate. The protection method comprises steps as follows: 1, working condition information of the belt conveyor is acquired in real time, and the acquired information is stored and uploaded synchronously; 2, the revolving speed of a motor of the belt conveyor is analyzed and processed; 3, whether a power supply module of a power grid is powered off or not is judged; 4, the belt conveyor is controlled to brake and slow down intermittently; 5, the belt conveyor is controlled to shut down. The system is novel in design, the runaway phenomena of the belt conveyor can be detected and controlled, the belt conveyor can be protected to shut down stably under the condition of the power failure, the condition of runaway of the belt conveyor due to the dead weight of materials during the power failure can be avoided, and the use effect is good.

The invention discloses a wind generating set structure which is small in volume and maintenance-free and has good low-voltage ride-through capability. The wind generating set structure comprises a blade, a generator, a gear box and a current transformer, wherein a blade rotating shaft is connected with a main shaft of the gear box; the main shaft of the gear box is connected with a rotor of the generator; the current transformer is connected between the generator and an electric network through a cable; the generator is a brushless cage-type asynchronous generator; the current transformer is a full-power current transformer, and a motor side current transformer of the full-power current transformer is connected with a stator winding of the brushless cage-type synchronous generator; and an electric network side current transformer is connected with the electric network.

A brake machine for a belt conveyor in a coal mine roadway comprises a machine frame, the top of the machine frame is provided with a top beam in the front-and-back horizontal direction, a plurality of jacks or oil cylinders are arranged below the top beam, the axes of the jacks or the oil cylinders are located in the vertical direction, a base of each jack or a base of a cylinder body of each oil cylinder is hinged to the lower end of a beam in a connected mode, each jack or a piston rod of each oil cylinder is fixedly connected with the top end of an upper belt clamping plate, and an upper soft cushion is fixed at the bottom end of the upper belt clamping plate. A lower belt clamping plate is arranged below the upper belt clamping plate, the plane of the lower belt clamping plate is located in the horizontal direction, a lower soft cushion is fixed at the top end of the lower belt clamping plate, the lower belt clamping plate is fixed on the top of a bottom beam, and the bottom beam is fixed on the machine frame. The brake machine for the belt conveyor in the coal mine roadway has the advantages that the belt conveyor can be fast braked before belt flying or during the belt flying process, the serious fault of the belt conveyor can be avoided, and the normal operation of coal mine production can be ensured.

The invention provides an electric vehicle controller with an automatic transmission function and a voice speaker device. A single chip microcomputer circuit with an automatic transmission function program, a drive circuit, a Hall sensing signal input wiring terminal, a back electromotive force collecting and processing circuit, a speed regulating signal input wiring terminal, a brake signal input wiring terminal and a gear signal input wiring terminal are arranged on a controller electronic circuit board. The single chip microcomputer circuit with the automatic transmission function program is used for detecting the signals fed back or output by the above function circuits to identify the difficulty and the demand for increasing power of abrupt slope climbing under the different speed conditions of vehicle pushing and riding or overload traveling or acceleration starting or overtaking, and a large-power gear is switched in an automatic transmission mode. After an abrupt slope is crossed, or overloads are released, or acceleration starting is conducted, or braking is conducted during overtaking gear traveling, an economic gear is switched in an automatic transmission mode. When a breakdown happens to an electric vehicle circuit, a low-speed gear is switched in an automatic transmission mode to continue safe traveling. The voice speaker device is matched with the controller in use for voice prompt.

The invention discloses a transmission of a mandrel thrust trolley of a perforating machine, relating to steel rolling machinery. By means of the invention, the potential security hazard of the mandrel thrust trolley of the perforating machine can be solved. The transmission disclosed by the invention comprises a power system, a gear and gear rack mechanism and a mandrel trolley. The power system is composed of a motor, a coupling with a brake disc, a decelerator and a coupling. A small gear and a long gear rack are meshed so as to form the gear and gear rack mechanism. The mandrel trolley is connected with the long gear rack. The output shaft of the decelerator is connected with the small gear through the coupling. Wherein the tooth surface of the long gear rack is upward; the lower part of the long gear rack is provided with a full-length sliding plate; the sliding plate is positioned above a roller way and is capable of sliding along the roller way; the roller way is composed of a plurality of rollers; each roller is fixed on a roller way base through a bearing base; and the tail part of the long gear rack is supported on two guide rails of the roller way base through an idler wheel. The transmission disclosed by the invention is used for the perforating machine in the seamless steel tube production. Unsafe hidden troubles are eliminated. The transmission has the advantages of low moving inertia, steady operation, non-deformed gear rack and the like.

The invention discloses a reel facilitating line clamping for a textile machine. The reel structurally comprises a hydraulic adjusting rod, reel two end fixing plates, a double-layer reeling preventing reel and a textile fixing frame. The lower end of the hydraulic adjusting rod is fixedly mounted on reel two end fixing plates with the number of two, the reel two end fixing plates are fixedly mounted at the two ends of the double-layer reeling preventing reel, a transverse ring cutting structure spirally slides on the double-layer reeling preventing reel, an adhesive velvet strip arranged on aspiral slider stretches out to make contact with the head of a small reel, therefore, the adhesion ability of the small reel is improved, reliability is increased, and double-layer reeling of the small reel is avoided. When the small reel of a strip reeling machine is abraded and traction force of the front end is changed, an abrasion traction expansion structure starts to work, expansion is carried out through the abrasion traction expansion structure, connection between the double-layer reeling preventing reel and the reel two end fixing plates is enhanced, and therefore the small reel of the strip reeling machine is prevented from galloping.

The invention relates to a robot servo torque control method based on a speed control mode. A speed control system loop is included. A saturator capable of adjusting the threshold is additionally arranged behind a PI controller of the speed control system loop, when the controlling quantity output by the PI controller reaches the upper threshold and the lower threshold of the saturator, a speed control system enters a constant torque control mode from a speed control mode, and therefore constant torque output of a servo motor is achieved. By means of the robot servo torque control method basedon the speed control mode, control over the servo torque of a robot is achieved by means of the speed control mode, the cost for achieving torque control is reduced, meanwhile, smooth conversion between the torque control mode and the speed control mode is completed, and the phenomenon of galloping happening to robot moving is avoided.

The invention discloses a wind turbine generator set overspeed protection auxiliary control method including torque control, and the method specifically comprises the steps: judging whether the rotating speed of a wind turbine generator set in the operation process is in a normal range or not, and starting an overspeed protection auxiliary control mode if the rotating speed is not in the normal range; and reducing the rotating speed of the wind turbine generator set in a mode of combining a normal shutdown mode, a torque control mode and an emergency yaw mode. As redundancy protection, multiple protections can be provided for overspeed faults of the wind turbine generator set, so that the operation safety risk of the wind turbine generator set is reduced, and serious accidents such as galloping and tower falling of the wind turbine generator set are prevented.

The invention discloses a wind and solar general type new energy intelligent control system and method. The wind and solar general type new energy intelligent control system comprises a wind and solar generation module, a CPU, a wind energy maximum power point tracking control module, a charge-discharge control module and an unloading control system. The CPU detects state of each variable and the current working mode of the system in real time so as to judge and determine how working modes are switched, so that when the working modes are switched, the system keeps reliable and operates stably. The wind and solar general type new energy intelligent control system and method achieve a storage battery power detection function and a storage battery intelligent charge-discharge management function, the defects that a storage battery is over charged, over discharged and over heated are overcome reliably, meanwhile, unloading is controlled in the mode with PWM stepless unloading and fully connected unloading combined, so that a draught fan is effectively protected, galloping is prevented, electric energy is utilized as much as possible, and the efficiency of the system is improved.

The invention provides a glass recycling system. The recycling system comprises a detection device, a drying device, a dust removal device, a crushing device, an adjusting device, a screening device and a processor, wherein the detection device is configured to detect the shape of a glass product; the drying device is configured to dry the glass product and cooperate with the dust removal device to clean impurities adsorbed in the glass product; the crushing device is configured to crush the glass product; the strength of the crushing device is adjusted through the adjusting device; and the screening device is configured to detect glass fragments and perform secondary treatment on the fragments. The adjusting device is configured to be arranged on a rotating barrel of the crushing device and crush the glass product, so that the adjusting device can perform adjustment according to data acquired by the detection device, the crushing device can efficiently crush the glass product in the crushing process, and the crushing effect is optimal.

Embodiments of the invention disclose a waste heat utilization generator set and a galloping prevention device and method thereof. The galloping prevention device of the generator set comprises a converter and a brake loop, wherein the converter comprises an alarm branch; the generator set is electrically connected to an energy consumption resistor through the converter; the converter controls thedisconnection between the generator set and the energy consumption resistor when the output voltage of the generator set exceeds the threshold voltage, and controls the alarm branch to be powered onat the same time; the generator set is electrically connected to the energy consumption resistor through the brake loop; the brake loop is connected to the alarm branch in parallel; and the brake loopcontrols the connection between the generator set and the energy consumption resistor according to the electrification of the alarm branch. During the process of closing an air inlet valve of an expander and opening an exhaust valve of the expander, the generator set is kept connected to the energy consumption resistor, the energy consumption resistor serves as a brake resistor to release the rotating speed of the generator set, and galloping of the generator set in the process of closing the air inlet valve of the expander and opening the exhaust valve of the expander is effectively prevented.

The invention relates to an overload protection structure for a coupler, in particular to a structure for protecting flexible parts of the coupler when the torque is overloaded, and belongs to the technical field of couplers. The overload protection structure comprises an adapter shaft, the flexible parts and an adapter disc, a bearing flange is arranged at one end of the adapter shaft, a bearingcountersunk hole of which the appearance outline is the same as the structure of the bearing flange is formed in one end of the adapter disc, and the bearing flange of the adapter shaft stretches intothe bearing countersunk hole of the adapter disc; and the flexible parts are arranged on one side of the adapter disc and fastened on the adapter disc and the bearing flange through multiple connecting parts. According to the overload protection structure for the coupler, through the rigid connecting structure of the countersunk hole and the flange, a part of loads can be borne when the coupler is overloaded, and damage of the flexible parts is avoided; meanwhile, galloping is avoided when the flexible parts fail, and other equipment of a unit is effectively protected.

The invention discloses a control system guaranteeing the safety of a wind electrical turbine assembly. The control system guaranteeing the safety of a wind electrical turbine assembly comprises a control unit, a variable pitch unit, a fan braking unit and a yaw control unit; the control unit presets a safe rotation speed value, when a variable pitch system is in trouble and the rotation speed value measured by the control unit is smaller than the safe rotation speed value, the control unit transits an instruction to the fan braking unit, a wind turbine performs a braking action; the rotationspeed value measured by the control unit is larger than the safe rotation speed value, the control unit transits an instruction to the yaw control unit, and the wind turbine performs a yaw action; when the wind turbine yaws and the rotation speed value measured by the control unit is smaller than the safe rotation speed value, the control unit transits an instruction to the fan braking unit, and the wind turbine performs another braking action. The control system guaranteeing the safety of the wind electrical turbine assembly solves the problem that in traditional technology the wind electrical turbine assembly is damaged because of the galloping of the wind electrical turbine assembly under the condition that fan blades are broken and cannot feathering.

Disclosed is an engine forced flameout device. The technical scheme includes that the engine forced flameout device comprises an oil and gas control block provided with an oil inlet passage, an oil outlet passage and a control oil passage. The control oil passage and a high-pressure gas control valve are matched to connect and disconnect the oil inlet passage and the oil outlet passage, the oil and gas control block is fixedly connected with an oil outlet block which is connected with an oil outlet joint fixedly, both the oil outlet block and the oil outlet joint are provided with oil passages inside, and the oil passages are communicated with the oil outlet passage of the oil and gas control block. The engine forced flameout device is similar to a three-way valve and forcedly flame out and stop an engine by cutting off oil ways of a high-pressure oil pump through the high-pressure gas control valve, and the problem about galloping of a diesel engine is thoroughly solved. Besides, the engine forced flameout device is simple to operate and high in safety.

A brake machine for a belt conveyor in a coal mine roadway comprises a machine frame, the top of the machine frame is provided with a top beam in the front-and-back horizontal direction, a plurality of jacks or oil cylinders are arranged below the top beam, the axes of the jacks or the oil cylinders are located in the vertical direction, a base of each jack or a base of a cylinder body of each oil cylinder is hinged to the lower end of a beam in a connected mode, each jack or a piston rod of each oil cylinder is fixedly connected with the top end of an upper belt clamping plate, and an upper soft cushion is fixed at the bottom end of the upper belt clamping plate. A lower belt clamping plate is arranged below the upper belt clamping plate, the plane of the lower belt clamping plate is located in the horizontal direction, a lower soft cushion is fixed at the top end of the lower belt clamping plate, the lower belt clamping plate is fixed on the top of a bottom beam, and the bottom beam is fixed on the machine frame. The brake machine for the belt conveyor in the coal mine roadway has the advantages that the belt conveyor can be fast braked before belt flying or during the belt flying process, the serious fault of the belt conveyor can be avoided, and the normal operation of coal mine production can be ensured.

The invention discloses a speed control protecting device for a diesel engine during emergency braking of a locomotive. The speed control protecting device comprises a driver controller and a diesel engine speed control module (SCM). A normally-closed contact K1 of an emergency stop control relay (ESCR) and a normally open contact of a main alternator field contactor (AFC) are connected in parallel and then connected between the driver controller and the diesel engine SCM. The ESCR is connected with the main AFC in parallel, connected with a mechanical control switch S2 in series and then connected to the positive pole and the negative pole of a power supply. By the adoption of the protecting device, after the locomotive is braked emergently and the diesel engine is unloaded suddenly, the rotating speed of the diesel engine can be automatically decreased to the idling rotating speed. The situation that the diesel engine of the locomotive gallops since the rotating speed is out of control can be avoided, the locomotive damage accident is prevented, and the operation safety of the locomotive is improved. Meanwhile, the oil consumption of the locomotive is reduced, and the economical efficiency of the locomotive is improved.

The invention belongs to the field of nuclear biochemical pollution decontamination and relates to a noise reduction device, in particular to a device for reducing noise of a nuclear biochemical pollution decontamination trailer. The device comprises a water tank, a chemicals box, a precise filter, a chemicals output pump, a flow meter, a chemicals pump, a chemicals pump circulation pipeline a, a chemicals pump circulation pipeline b, a chemicals pressure control valve, a decontamination chemicals port, a clean water pump, a clean water pump circulation pipeline a, a clean water pump circulation pipeline b, a clean water pressure control valve, decontamination clean water port and a pre-decontamination clean water port; an included angle of 50 degrees is formed between the chemicals pump circulation pipeline a and the chemicals pump circulation pipeline b, so that a chemicals pump motor is prevented from running away; and an included angle of 50 degrees is formed between the clean water pump circulation pipeline a and the clean water pump circulation pipeline b, and the other end of the clean water pump circulation pipeline b is connected with a clean water pump input hole, so that a clean water pump motor is prevented from running away, and the device has the advantages of controlling water pressure feedback and stabilizing a control system.

The invention relates to an electric vehicle with an automatic wave function. A single-chip microcomputer circuit with an automatic wave function program, a driving circuit, a Hall sensing signal input terminal, a negative electro-dynamic potential collecting and processing circuit, a speed regulation input terminal, a brake signal input terminal and a gear signal input terminal are arranged on an electronic circuit board of a controller of the electric vehicle; the single-chip microcomputer circuit with the automatic wave function program is used for detecting signals fed back or output through the above functional circuits to identify the difficulties during abrupt slope climbing, overload driving, accelerated starting or overtaking and the requirement of increasing the power under different speed conditions during pushing or driving, and a high-power gear is switched through an automatic wave; after abrupt slope climbing, overload unloading, accelerated starting or overtaking driving brake, an economic gear is switched through the automatic wave. When the circuit of the electric vehicle breaks down, a low speed gear is switched through the automatic wave for continuously safe driving; failure modes can be promoted through voice loudspeaker, so that failures are temporarily and automatically repaired, and the electric vehicle drives at a low speed.

The invention discloses an improved motor controller assembly of an electric automobile, and relates to the technical field of the electric automobile. The improved motor controller assembly comprises a motor controller, a contactor and a fuse, wherein the contactor is connected with the motor controller through a copper sheet; the motor controller, the contactor and the fuse are arranged on a base; an electric potential detector is further arranged on the base and connected with the motor controller; the fuse is connected with a temperature control device and a compensating current device through a VM copper connecting sheet; the electric potential detector can be used for monitoring whether a potentiometer is open-circuit and preventing the potentiometer from getting out of control, by means of temperature protection and compensating current, subnormal temperature and over-temperature protection as well as steady current limit in the whole operating range can be provided, and damage of ultralow voltage to the motor is avoided.

The invention discloses a starting power generation system for an auxiliary power unit for a vehicle. In the engine starting process, a permanent magnet motor is subjected to constant torque control to drive an engine to ignite, and when an engine speed reaches the idle speed, the output torque of the permanent magnet motor is controlled to be zero. In the power generation process, a running speedcommand of the engine and a torque command value of the permanent magnet motor are obtained through table look-up according to a generated power request of the system and a universal characteristic curve of the engine. The engine performs closed-loop control according to a speed command value obtained by table look-up, and the stability of the engine speed is realized by adjusting the engine throttle opening degree in real time. The permanent magnet motor obtains a torque current command value through table look-up according to a torque command, and realizes the current closed-loop control through a PI regulator. According to the starting power generation system for the auxiliary power unit for the vehicle, the starting torque is stable, and the engine can be successfully started; and thequality of electric energy is high during power generation, and the fuel economy of the engine is good.

The invention belongs to the field of nuclear biochemical pollution decontamination and relates to a noise reduction device, in particular to a device for reducing noise of a nuclear biochemical pollution decontamination trailer. The device comprises a water tank, a chemicals box, a precise filter, a chemicals output pump, a flow meter, a chemicals pump, a chemicals pump circulation pipeline a, a chemicals pump circulation pipeline b, a chemicals pressure control valve, a decontamination chemicals port, a clean water pump, a clean water pump circulation pipeline a, a clean water pump circulation pipeline b, a clean water pressure control valve, decontamination clean water port and a pre-decontamination clean water port; an included angle of 50 degrees is formed between the chemicals pump circulation pipeline a and the chemicals pump circulation pipeline b, so that a chemicals pump motor is prevented from running away; and an included angle of 50 degrees is formed between the clean water pump circulation pipeline a and the clean water pump circulation pipeline b, and the other end of the clean water pump circulation pipeline b is connected with a clean water pump input hole, so that a clean water pump motor is prevented from running away, and the device has the advantages of controlling water pressure feedback and stabilizing a control system.

The invention discloses a permanent magnet synchronous motor. The motor comprises a rotating shaft, an end cover, a base and a rear cover, the two ends of the base are detachably connected with an endcover and a rear cover correspondingly. The rotating shaft is inserted into the base; the transmission output end of the rotating shaft protrudes out of the end cover; a winding stator, a permanent magnet and a rotor iron core are installed in the base. According to the permanent magnet synchronous motor, the motor is light in weight, high in release efficiency, good in motor stability and heat dissipation performance and large in starting torque, electric energy can be generated spontaneously under the condition of no external force energy, certain energy recovery is guaranteed, and therefore the effective endurance mileage is increased. On the basis of a traditional motor, one battery pack is reduced, the same continuous mileage is achieved, after matching of the motor and the controller is completed, the cost of the whole vehicle is reduced, and the performance of the whole vehicle is improved.

The embodiment of the invention discloses a control method and device for the output torque of a vehicle engine, and in the vehicle driving process, the target output torque of the vehicle engine is a torque value which needs to be output by the engine and is determined based on the current total power demand of the vehicle; by detecting the engagement position of the clutch, a transmittable torque indicative of the torque transmitting capability of the clutch may be determined. When the clutch is in the target change process, a first target torque is determined based on the target change process of the clutch and the transmittable torque of the clutch; and in the target change process, if the target output torque of the engine is larger than the first target torque, the target output torque of the engine is adjusted to be the first target torque. Therefore, in the process that the clutch is in the target change, the controller of the engine can control the actual output torque of the engine according to the first target torque, so that stall and even galloping of the engine in the process are avoided, and the driving safety of the vehicle is improved.

The invention discloses a control method, device and equipment for an extended-range power system and a storage medium. The method comprises the following steps: when the sum of regenerative braking required power and generated power of a generator in the extended-range power system is greater than allowable charging power of a battery, reducing the generated power to a preset value; in the process of reducing the generated power, determining a target change rate according to actual engine parameters of an engine in the extended-range power system and a preset corresponding relation according to a preset period, and adjusting the rotating speed of the engine according to the target change rate until the rotating speed of the engine reaches an idle rotating speed, the preset corresponding relationship comprises a corresponding relationship between the engine parameter and the change rate when the engine NVH characteristic parameter is in a suitable interval. According to the invention, the generated power is reduced, so that feedback braking can be realized, and higher power can be distributed, thereby ensuring the braking performance; and in the process of reducing the generated power, it is guaranteed that the NVH characteristic parameters of the engine are within a proper interval, galloping of the engine is avoided, and the riding experience is improved.

A downward transport belt conveyor energy-saving braking system which comprises a low-power electromotor, a worm and gear speed reducer, a belt driving roller and a braking device, wherein a motor shaft is connected with a worm of the worm and gear speed reducer, and a driving roll is connected with a worm wheel of the worm and gear speed reducer; a pulling stress sensor is arranged in the axial direction of the worm, the system further comprise a control module, and the control module is respectively connected with the pulling stress sensor and the braking device. According to the downward transport belt conveyor energy-saving braking system, combination of the low-power electromotor, the worm and gear speed reducer and the pulling stress sensor is adopted, low-speed starting and low-speed operating of a downward transport belt can be achieved, and galloping effects are avoided.

The invention discloses a position control method of a servo motor. When the difference of a target counting value and a counted total numerical value is greater than the maximum counting value of a counter, a counting control program controls the counter to reset and restart to count by combining and using the counter and the counting control program and setting the target counting value in the counting control program in advance; when the difference of the target counting value and the counted total numerical value is smaller than or equal to the maximum counting value of the counter, the counting control program controls the counter to take a result obtained by subtracting the difference of the target counting value and the counted total numerical value by the maximum counting value ofthe counter as a counting initial value and continue to count; and when the counting value of the counter exceeds the maximum counting value of the counter, the counter generates an overflow signal, so that the counting of the pulse number is realized by the matching of the counter and the counting control program. The invention ensures the counting accuracy, effectively enhances the counting speed, satisfies the requirement of counting with high accuracy and high speed and also lowers the hardware cost.

The invention provides a glass recycling system, the recycling system includes a detection device, a drying device, a dust removal device, a crushing device, an adjustment device, a screening device and a processor, the detection device is configured to detect the shape of glass products; The device is configured to dry the glass products, and cooperate with the dust removal device to clean up the impurities adsorbed in the glass products; the crushing device is configured to crush the glass products; and adjust the strength of the crushing device through the adjustment device; screening The device is configured to detect glass shards and to perform secondary processing on the shards. In the present invention, the adjustment device is configured to be arranged on the rotating barrel of the crushing device and crush the glass products, so that the adjustment device can be adjusted according to the data collected by the detection device, so as to ensure that the crushing device is crushing the glass products In the process, it can be crushed efficiently, and the effect of crushing is the best.

The invention discloses an improved carburetor. The improved carburetor comprises a carburetor body, a bottom cover is arranged on the lower side of the carburetor body, the carburetor body is provided with an atmosphere balance hole channel communicated with external atmosphere, an atmosphere balance hole of the atmosphere balance hole channel is formed beside the portion, on the connection end face of the carburetor body and an engine, of the carburetor body, the atmosphere balance hole is connected with a pipe connector, and a drainage pipe is connected with the pipe connector. According to the improved carburetor, the atmosphere balance hole is formed beside the portion, on the connection end face of the carburetor body and the engine, of the carburetor body, overflown or leaked oil is guided and drained through the drainage pipe, and the situation that the oil is directly discharged to the high-temperature outer shell of the engine and accordingly safety accidents are caused is avoided. Additionally, the carburetor with a detachable and washable oil inlet system has the advantages that the design is reasonable, the structure is simple, the oil inlet system is convenient to disassemble and assemble and washing can be easily carried out and the carburetor has great use value and market value.