37results about How to "Extend effective working hours" patented technology

The invention relates to a novel wireless sensor network energy-saving routing algorithm based on the node echelon movement. Firstly, an independent redundant node in the internet is selected, and then a bottleneck node in the internet is selected. On the basis of the previous work, the best path for the movement of the node is selected, that is, the proper independent redundant node is selected for the movement and is moved to the periphery of the bottleneck node. After the movement, a gateway node can monitor HELP information which is sent out by the bottleneck node. If the residual energy of the bottleneck node is lower than a threshold, nodes which are moved to the periphery of the bottleneck node are aroused to substitute invalid nodes. Therefore, the network works normally. The algorithm can find the best moving node and the best moving path under the conditions that the bottleneck node is invalid and a plurality of condition constraints of saving the energy consumption for the movement of the node, and the like, are satisfied, thus the normal work of the network is guaranteed and the effective working time of the network is prolonged.

The invention relates to a method for monitoring steel bar corrosion state in concrete by stages and a sensor, and belongs to the field of tests of civil engineering sensors. The method comprises two stages for monitoring the steel bar corrosion state, namely an initial stage of steel bar corrosion for monitoring Cl content and a stage for monitoring the content of liquid rust nearby the steel bar during rusting; therefore, the method prolongs the effective working time of a steel bar corrosion sensor. The sensor comprises a sleeve, a fiber bracket and an LPFG sensing probe, wherein the sleeve is provided with a hole; the fiber bracket is arranged in the sleeve; the LPFG sensing probe is freely and straight arranged on the fiber bracket; and a monitoring medium is filled in the sleeve.

The invention relates to a cooling system used for a loading machine. The cooling system comprises a fan, wherein the fan is connected with a constant displacement motor, an electric proportional relief valve, a constant displacement pump and an oil tank in sequence, the electric proportional relief valve is further connected with a controller and a temperature sensor, the temperature sensor is connected with an engine ECU through a CAN bus, and a radiator is further arranged at the front end of the fan and connected with hydraulic oil and bending moment oil through a temperature control valve. The independent hydraulic-controlled cooling fan is adopted in the cooling system, the flow of the hydraulic oil flowing through the radiator and the flow of the bending moment oil flowing through the radiator are controlled by the temperature control valve, the hydraulic oil is matched with bending moment oil, operational use time of the fan is greatly increased, and the performance ratio of the fan is improved; meanwhile, the temperature of engine coolant, the temperature of hydraulic oil and the temperature of bending moment oil are controlled to be within the best temperature interval in the shortest time, overheating and supercooling of media are avoided, and stabilization of the thermal state of the whole machine is guaranteed.

The invention discloses a spiral cone stirring ball grinding mill. The spiral cone stirring ball grinding mill comprises a mill body, a driving device, a slewing bearing, a movable cone device, a fixed cone device and multiple grinding balls, wherein the slewing bearing, the movable cone device, the fixed cone device and the multiple grinding balls are arranged on the mill body. The driving mechanism can drive the movable cone device to rotate around the axis of the fixed cone device through the slewing bearing, and the grinding balls are placed in a cavity defined by the movable cone device and the fixed cone device jointly so as to carry out stirring and powder grinding on materials jointly. By means of the cooperation of the slewing bearing and the grinding balls, materials can be subjected to sufficient powder grinding, the effective work duration of the spiral cone stirring ball grinding mill is prolonged, the maintenance frequency can be reduced, and therefore the working efficiency and the powder grinding effect of the spiral cone stirring ball grinding mill can be greatly improved.

The invention relates to a computerized embroidery machine automatic baseline replacing apparatus. The apparatus comprises an embroidery machine snatch fork overturning mechanism, an automatic bobbin case replacement mechanism and a bobbin case bin mechanism for storing standby bobbin cases, the body of the cylinder 1 of the automatic bobbin case replacement mechanism is fixedly installed on a support plate, the support late and a lining block are fixedly installed on a transmission plate, and the support plate, the lining block and the transition plate are connected to form an L-shaped rigid body. The apparatus has the following advantages: an artificial bobbin case replacement process is replaced by a mechanical automatic bobbin case replacement principle, so a worker fills the baseline-wound bobbin cases into the bobbin case bin for storing the standby bobbin cases, a single-board computer controls the automatic baseline replacing apparatus to complete a series of motions when the baseline of the embroidery machine is exhausted to realize the automatic bobbin case replacement, and the bobbin cases in the bobbin case bin for storing the standby bobbin cases can be replaced when the embroidery machine is not in a shutdown state, thereby the down time of the embroidery machine is reduced; one-key automatic bobbin case replacement is realized, so the work intensity is reduced; and batch release is realized, so the time is saved, and the management is convenient.

The invention provides an intermediate frequency power circuit, which comprises a first voltage source, a second voltage source, a first smoothing reactor, a second smoothing reactor, a first resonant capacitor, a second resonant capacitor, a first power device, a second power device, and a furnace induction coil, wherein the first voltage source is connected in series with the second voltage source; the first smoothing reactor and the second smoothing reactor are connected with the first voltage source and the second voltage source respectively; the first resonant capacitor and the second resonant capacitor are connected with the first smoothing reactor and the second smoothing reactor respectively, and are mutually connected in series; the first power device is connected with the first smoothing reactor and the first resonant capacitor, and the second power device is connected with the second smoothing reactor and the second resonant capacitor; and the furnace induction coil is connected between a second node and a fifth node. The intermediate frequency power circuit has the characteristics of higher Q value of a resonator system, and higher power output so as to thicken the furnace wall, greatly improve effective work time of the furnace and reduce production cost. The intermediate frequency power circuit has great significance in the fields of metal melting, induction heating and the like.

The invention discloses an air purification method applied to an air purification system. The air purification system comprises an air purification robot and a plurality of charging bases connected with mains supply. The air purification method comprises the steps that when an air purification order is received, a charging base enquiry signal is sent to the outside world so that the charging basecan send a charging guide signal after receiving the enquiry signal; when the charging guide signal sent by the charging base is received, the first target charging base is determined according to thecharging guide signal; and the air purification robot is controlled to move to the first target charging base according to the charging guide signal sent by the first target charging base, and the air purification function is operated through the mains supply connected with the first target charging base. The invention further discloses the air purification system and a computer readable storagemedium. The effective working time of the movable air purification robot can be prolonged, and accordingly, the air purification effect is improved.

The invention provides a control system and method based on a two-stage bidirectional converter. The system is composed of a power unit and a control unit. The power unit comprises a Boost converter and two bidirectional converters, wherein the input end of the Boost converter is connected with the output end of a photovoltaic module, and the output end of the Boost converter is connected to a DCbus. A storage battery and a super-capacitor module are used as the input end of the first bidirectional converter, and the output end of the first bidirectional converter is connected to the DC bus.The input end of the second bidirectional converter is connected with the DC bus, the output end of the second bidirectional converter is connected with the low-voltage end of an isolation voltage device, wherein the high-voltage end of the isolation voltage device is connected with a power grid through an AC bus. The control unit collects a signal fed back by the power unit and transmits a control instruction to the power unit. According to the invention, the peak clipping and valley filling are carried out on the power grid system according to the illumination intensity and the power grid dispatching instruction.

The invention discloses a rough grinding machine. The rough grinding machine comprises a machine body, a driving mechanism as well as a rotational support, a grinding wheel device, a grinding roller device and a loading device which are arranged on the machine body, wherein the rotational support comprises a fixed ring fixedly arranged on the machine body, a revolving ring arranged to be coaxial with the fixed ring and a rolling body arranged between the fixed ring and revolving ring, the driving mechanism is used for driving the grinding wheel device to revolve through the revolving ring, theloading device can be used for driving the grinding roller device to slide on the machine body to realize switchover between a loading state and an overhauling state, in the loading state, the grinding roller device can be pressed on the grinding wheel device through materials, and in the overhauling state, the grinding roller device and the grinding wheel device are kept away from each other. The rough grinding machine has the advantages of simple structure, high rough grinding efficiency and convenient maintenance.

The invention belongs to the technical field of unmanned aerial vehicles, and specifically relates to an unmanned aerial vehicle recovery and charging device based on a horizontal stabilization platform. The unmanned aerial vehicle recovery and charging device based on the horizontal stabilization platform comprises a lifting mechanism, an elastic rod mechanism, a horizontal stabilization mechanism and an unmanned aerial vehicle landing mechanism which are sequentially arranged from bottom to top, wherein a charging location device is arranged at the top end of the unmanned aerial vehicle landing mechanism, and a lifting charging device is arranged in the unmanned aerial vehicle landing mechanism; lifting grabbing devices are symmetrically arranged at the two sides of the lifting charging device; and an infrared beacon is arranged on each lifting grabbing device. According to the unmanned aerial vehicle recovery and charging device based on the horizontal stabilization platform, through the levelling of the arranged horizontal stabilization mechanism for the horizontal stabilization platform, the unmanned aerial vehicle landing mechanism arranged on the horizontal stabilization platform is always in a horizontal state, so that recovery and charging for an unmanned aerial vehicle are benefited.

The invention discloses a novel stirring ball mill. The novel stirring ball mill comprises a body, a driving mechanism as well as a slewing bearing, a movable cone device, a fixed cone device, a buffer device, an ejection device and multiple milling balls which are arranged on the body, wherein the driving mechanism can drive the movable cone device to rotate around the axis of the fixed cone device through the slewing bearing, and the fixed cone device is arranged on the body through the buffer device; a base of the ejection device is fixedly mounted on the body, the top end of the ejection device can make contact with the fixed cone device, and the ejection device is used for supporting the fixed cone device; the milling balls are placed between the movable cone device and the fixed conedevice and used for milling materials. By means of the scheme, the materials can be sufficiently milled, the effective work time of the novel stirring ball mill can be prolonged, the maintenance times can be reduced, and the working efficiency and the milling effect of the novel stirring ball mill can be substantially improved.

The invention relates to the technical field of petroleum geology drilling tool, in particular to a well drilling accelerating mechanism. The technical problems that an existing drill bit driving drill does not have the drilling pressure extension capacity, and the drill bit rock breaking capacity cannot be improved are solved. The well drilling accelerating mechanism comprises a circumferential buffer accumulator, an axial buffer accumulator and a connecting assembly; one end of a torsional spring component is connected with a connecting component, and the other end of the torsional spring component is connected with a drilling tool output shaft or a power component; the axial buffer accumulator comprises a guide spindle and a disc spring component; the guide spindle is installed on the drilling tool output shaft or the power component; the disc spring component is installed on an outer circle of the guide spindle. Accordingly, the instantaneous rotational speed of a drill bit can beadjusted, the rock breaking efficiency of the drill bit is improved, the working life of the drill bit is prolonged, the effective action distance of drill pressure can be extended, the effective working time of the drilling tool can be prolonged, a torque fluctuation peak value of the drilling tool is reduced, the drilling speed is increased, and the drilling quality is improved.

The invention provides an aquaculture tail water filtering system which comprises a water inlet pipeline, a front primary filtering mechanism, a three-way pipeline and two filtering mechanisms. Each filtering mechanism comprises a rack, a filter screen, a water inlet assembly, a collecting tank, a water collecting tank and a rotary driving assembly. The rotary driving assemblies are started to drive the filter screens to rotate, impurities on the filter screens can be removed through centrifugal force, the impurities are thrown into the collecting tanks, and therefore the filtering effect is improved by cleaning the filter screens. Water passing channels are formed in rotating shafts, a water pump pumps water in a second water tank into a first water tank, the water passes through the water passing channels and then is sprayed out from water spraying units, so that the water is sprayed out from inside to outside in the filter screens to effectively clean impurities attached to the surfaces of the filter screens, and meanwhile, the structure can also be used when the rotating shafts drives the filter screens to rotate, and the cleaning of the filter screens is synchronously enhanced by centrifugal force and water spraying.

The invention discloses a vertical rotary cone ball mill. The vertical rotary cone ball mill comprises a mill body, a driving mechanism as well as slewing bearings, a movable cone device, a fixed conedevice, buffer devices and a plurality of grinding balls which are all arranged on the mill body, wherein the driving mechanism can drive the movable cone device to rotate around the axis of the fixed cone device through the slewing bearing, the fixed cone device is arranged on the mill body through the buffer device, and the grinding balls are arranged between the movable cone device and the fixed cone device for grinding materials together. Materials can be fully ground by cooperation of the slewing bearing, the grinding balls and the buffer device, effective working hours of the vertical rotary cone ball mill are increased, maintenance frequency can be reduced, and accordingly, working efficiency and grinding effect of the vertical rotary cone ball mill can be greatly improved.

The invention discloses an orchard bird repelling device based on the agricultural internet of things, belongs to the technical field of orchard bird repelling devices, and solves the problems that bird repelling equipment in the prior art needs to be started for a long time to achieve the bird repelling effect, but under many conditions, no bird exists around an orchard, electric energy is wasted easily when the bird repelling equipment is started for a long time, and the effective working time of the bird repelling equipment is shortened. The orchard bird repelling device comprises a control end, a bird repelling end controlled by the control end to repel birds, and an Internet of Things terminal used for enabling the control end to control the bird repelling end to be started; and the bird repelling end comprises a support, bird repelling devices arranged on the support and distributed in different areas, ultrasonic ranging modules arranged on the bird repelling devices and used for measuring the distance between obstacles in the air, and a judgment module used for judging whether the ultrasonic ranging modules are within a given range or not, and after judgment, and the bird repelling devices work or are still in a standby state according to the feedback result of the judgment module. The orchard bird repelling device is used for repelling birds in orchards.

The invention relates to an improved protection door of an intelligent numerical control lathe. The improved protection door comprises a draught fan bin, a ventilation bin, a door lock and a mobile terminal control system. The draught fan bin comprises a fan layer and a channel layer. The fan layer comprises a fan and a drive motor driving the fan to rotate forward and reversely, and baffles are arranged in the channel layer. The mobile terminal control system generates and stores operation instructions to control and manage the unlocking of the door lock the forward and reverse rotation of the drive motor. By means of the protection door, the inner environment and the outer environment are isolated, and under the situation that the work of the numerical control lathe is not affected, the working environment of the numerical control lathe is cooled and ventilated so as to stabilize the working environment and prolong the effective work time of the numerical control lathe; meanwhile, the influence on the work of the fan from scraps, cooling liquid and the outer environment can be well prevented, and inner impurities and outer impurities can be removed; and automatic locking and unlocking of the lock, automatic starting and stopping of the drive motor and standard management of the lock and the drive motor are achieved through the design of the operation instructions of the mobile terminal control system, and high expandability is achieved.

The invention discloses a pesticide spraying unmanned aerial vehicle with multiple spraying heads. The unmanned aerial vehicle comprises a pesticide storage box; the pesticide storage box is fixed onthe top surface of a mainframe box in a flat type covering and pressing manner; a plurality of anti-surge plates are vertically fixed to the inner top of the pesticide storage box side by side; a storage groove with a downward opening is formed in the bottom surface of a motor bracket; one end of a rotary pesticide spraying pipe is rotationally fixed in the storage groove through a rotary drivingdevice; the rotary pesticide spraying pipe is communicated with a rotary feeding device arranged in the mainframe box, a piston device used for separating the interior of the rotary pesticide sprayingpipe is arranged in the rotary pesticide spraying pipe, and a traction device used for pulling the piston device is arranged on the inner wall of the storage groove. According to the unmanned aerialvehicle, the arranged rotary pesticide spraying pipe can rotationally stretch out to spray pesticide; the pesticide spraying range of the rotary pesticide spraying pipe is automatically adjusted whilethe pesticide spraying angle of the rotary pesticide spraying pipe is adjusted; a control device does not need to be additionally arranged, the spraying head and the rotary pesticide spraying pipe are mutually matched for use, and the unmanned aerial vehicle pesticide spraying applicability and the pesticide spraying efficiency are greatly improved.

The invention discloses automatic equipment for cleaning channels of water supply and drainage ditches of houses and residences. The automatic equipment structurally comprises a water treatment detection device, a drainage connecting pipe, a sludge suction connecting pipe, a sludge pump, an equipment supporting base, an electric control box, a water treatment return pipe, a sludge water separationbox connecting pipe, a sludge water separation box and a sludge storage box with low water content. The sludge pump is arranged on the left part of the upper part of the equipment supporting base, the sludge suction connecting pipe is connected to the front end of the sludge pump, and the front end of the sludge suction connecting pipe is of a rotatable connecting structure. The sludge water separation box connecting pipe is connected to the rear end of the sludge pump, and the sludge pump is connected with the sludge water separation box through the sludge water separation box connecting pipe, so that the sludge treatment effect can be effectively improved. Output filter-press water has extremely low sludge content and can be directly discharged. The treated sludge has low water contentand can store more sludge, the effective working time of the equipment is effectively improved, and the practicability and reliability of the equipment are improved.

The invention relates to a suction type air cooler and a dust removal method and system of a filter device and belongs to the technical field of wind power generation. The suction type air cooler comprises a shell, a cooling fan arranged on one side of the shell and a motor driving the cooling fan to rotate. The filter device is arranged at an air inlet of the shell, cooler fins are arranged between the filter device and the cooling fan, and the average perpendicular distance of cooler fin holes close to the side of the filter device and frames of the filter device is equal to or smaller than three times the hydraulic diameter of each fin hole; and the motor driving the cooling fan to rotate is connected with the dust removal system of the filter device, and when the dust removal system receives a dust removal instruction, the motor is controlled to enable the filter device to remove dust in a syntonic mode. By adoption of the scheme of the suction type air cooler and the dust removal method and system of the filter device, impurities on the filter device at the air inlet of the air cooler can be effectively cleared away, blocking of the filter device is prevented, the maintaining interval of the air cooler is lengthened, the maintaining duration of the cooler is shortened, and the benefits are created.

The invention discloses an efficient oil gas pre-cooler which comprises a housing, condensation pipes and a baffling device. The condensation pipes are distributed in the middle of the housing in the length direction of the housing. The baffling device is arranged in housing. A hot oil-gas inlet, a hot oil-gas outlet, a refrigerant inlet, a refrigerant outlet, an oil outlet and a sewage draining port are formed in the housing. The baffling device is a composite baffling plate. The efficient oil gas pre-cooler is further characterized in that the baffling device comprises a flexible baffling plate and a rigid baffling plate. The flexible baffling plate and the rigid baffling plate are connected through a copper rivet. The outer edge of the flexible baffling plate is in interference fit with the inner wall of the housing. A defrosting device is further arranged in the housing. In the efficient oil gas pre-cooler, the baffling device can prevent fluid short circuit brought by leakage caused by a gap and further remarkably improve the heat transfer efficiency. The defrosting device can perform defrosting at regular intervals, manned attendance is not needed, and the effective working time of the efficient oil gas pre-cooler is remarkably prolonged.

The invention belongs to the technical field of mining equipment, and particularly relates to a mud-sealed rock mass supporting method suitable for argillization rock. A hand-held guniting mechanism is provided and comprises a bottom plate; supporting wheels are installed at the bottom of the bottom plate; a rear fixing base is installed on the top face of the bottom plate and rotationally connected with the bottom end of an electric push rod through a lower connecting base; the top end of the rear fixing base is rotationally connected with the side face of a sliding sleeve; the top end of the electric push rod is rotationally connected with an arc-shaped bottom plate; an inner sliding rod is installed on the inner side of an outer fixing sleeve connected with the arc-shaped bottom plate in a sliding mode; the inner sliding rod is fixedly connected with a lower fixing plate through a connecting block; a damping spring is fixedly arranged between the inner sliding rod and the outer fixing sleeve; the lower fixing plate and an upper fixing plate are fixedly arranged on the outer side of a quick-connection type slurry spray head in a sleeving mode; the rear side of the top face of the bottom plate is connected with an anti-skid grab handle and a U-shaped frame through a lower connecting frame, a transverse pipe and an upper connecting frame; the outer side of the U-shaped frame is sleeved with a buffer sleeve; the U-shaped frame and the buffer sleeve can achieve the auxiliary supporting effect; and the damping spring and a shock pad can achieve buffering and energy absorption, and and the workload of personnel is relieved.

The invention provides a real-time bit synchronization correction method for a quantum key generation system, and the method obtains the optimal delay value of a detector through the measurement of aplurality of local delay values, and achieves the real-time bit synchronization correction. The method comprises the following steps: (1) reading a real-time count value and a real-time delay value ofa detector, and obtaining a delay efficiency relationship, a unit time maximum count value and a corresponding optimal delay value; (2), determining whether a real-time bit synchronization process isstarted or not; (3) calculating a bit synchronization delay search range of each detector and a delay value required to be searched; (4) by the delay control unit, adjusting the delay value of each detector; (5), counting by a detector; (6), by the bit synchronization processing unit, determining whether the search of the bit synchronization delay search range is completed or not, and if not, executing the step (4) again; and (7) by the bit synchronization processing unit, obtaining the optimal time delay value of each detector for detection according to the count and sending the optimal timedelay value to the time delay control unit, and by the time delay control unit, controling the time delay setting of each detector according to the optimal time delay value so as to realize real-timebit synchronization correction.

The invention relates to the field of automatic control and artificial intelligence, and particularly relates to a four-wheel arch-shaped unmanned solar electric vehicle. According to the automatic electric vehicle equipment, the two sides of the automatic electric vehicle equipment can pass through narrow channels, and a small-size target object can be operated in the middle of an arch. A thin-wall arch-shaped vehicle body is constructed, and electric wheels are installed at the bottom of the two sides of the vehicle body. A working space is formed in the middle of the arch, and a small-sizetarget object can be operated. The top of the vehicle body is provided with a solar charging panel and a controller, a lithium battery pack can be charged through the solar battery, and wheels can bedriven through the solar battery or the lithium battery pack. The controller also realizes an unmanned working mode, the vehicle body is not provided with a driving position, and the electric vehicleis controlled through remote control equipment. Through an unmanned driving mode, the overall structural weight of the electric vehicle can be reduced, the power consumption and manufacturing cost arereduced, and the electric vehicle has wide application value.

The embodiment of the invention provides a blade, a load adjusting assembly, a wind generating set and a load adjusting method. The blade comprises a blade body and a load adjusting assembly, a mounting hole is formed in the position, close to the front edge, of the blade body, and the mounting hole penetrates through the windward side and the leeward side of the blade body; The load adjusting assembly is arranged in the mounting hole and comprises a flow guide adjusting piece with the length adjustable in the axial direction of the mounting hole and two covering parts connected to the two ends of the flow guide adjusting piece in the axial direction, so that the two covering parts can cover the two ends of the mounting hole through the flow guide adjusting piece; or the two covering parts extend out of the mounting hole, so that airflow can pass through the mounting holes to circulate between the windward side and the leeward side. According to the embodiment of the invention, the effective working time of the blade can be prolonged, and the blade can solve the problem that the blade of the wind generating set cannot adapt to extreme working conditions.

A rolling motion based power generation device can be arranged in rolling type wave power generation equipment or rolling type wave absorption dykes, and belongs to the field of ocean power generation new energy. The power generation device includes a first rotation shaft, a first one-way bearing, a big gear, a small gear, a second rotation shaft, a power generator, bearings, a second one-way bearing, and a rolling device; the first rotation shaft and the rolling device are fixedly connected; the first one-way bearing fixedly sleeves the first rotation shaft; the big gear fixedly sleeves the first one-way bearing; the power generator and the bearings are fixedly connected to the rolling device; the second rotation shaft is connected to the power generator and the bearings; the second one-way bearing fixedly sleeves the second rotation shaft; and the small gear fixedly sleeves the second one-way bearing, is positioned between the power generator and the bearings, and is tightly engaged with the big gear. The power generation device is simple in structure, is low in cost, is high in performance ratio, is high in reliability, can avoid pollution, can generate power in regular waves or irregular waves, and has excellent wave absorbing ability.

The invention discloses a spraying device suitable for small batch detection. The spraying device includes a base, and a spraying sample storage bottle, a motor supporting plate is fixedly arranged onone side of the short edge of the base through bolts, a spraying gun platform position control servo motor is fixedly arranged on the motor supporting plate through bolts, two motion guide rails aremounted on the base, and a moving seat is mounted on each motion guide rail through a sliding groove; and a front supporting plate is fixedly arranged on one side of each moving seat through bolts, aspraying gun fixing platform is fixedly arranged at the upper parts of the front supporting plates through bolts, a spraying gun fixing fixture protecting tool is fixedly arranged at the cantilever end of the spraying gun fixing platform, a spraying gun fixing fixture is mounted in a mounting groove in the spraying gun fixing fixture protecting tool, and a first spraying gun and a second sprayinggun are fixedly arranged at the upper part of the spraying gun fixing fixture through bolts. The spraying device suitable for small batch detection has the beneficial effects that by adopting gravityautomatic spraying guns, a minimum amount of 100 ml of spraying plate work can be provided, fixing is achieved by using manual screwing of screws, and the device has better disassembly and fixing stability.

The invention relates to a protection door used for a numerical control lathe and provided with a mobile terminal control system. The protection door comprises a fan cabin, a ventilation cabin, a door lock and the mobile terminal control system, wherein the fan cabin comprises a fan layer and a channel layer, the fan layer comprises a fan and a drive motor for driving the fan to rotate clockwise and anticlockwise, and a baffle is arranged in the channel layer; the mobile terminal control system generates and stores an operation instruction to control and manage locking and unlocking of the door lock and clockwise and anticlockwise rotation of the drive motor. With the adoption of the protection door, internal and external environments are isolated, besides, the work environment of the numerical control lathe is cooled and ventilated without influence on work of the numerical control lathe, the work environment is stabilized, the effective work time of the numerical control lathe is prolonged, meanwhile, influence of scraps, a cooling liquid and the external environment on work of the fan is prevented well, and impurities inside and outside can be cleaned up; the mobile terminal control system can realize automatic locking and unlocking of the lock, automatic starting and closing of the drive motor as well as standard management of the lock and the drive motor through the operation instruction and has higher expansibility.