36results about How to "Reduce the carrying load" patented technology

The invention relates to a hexapod robot driven by parallel connecting rods. The hexapod robot mainly consists of a robot body and six groups of pedipulators, wherein the robot body adopts an octahedron-like structure; the structures of the six groups of pedipulators are completely the same; the six groups of pedipulators are mounted on six surfaces of the robot body in a shaft symmetry manner; the movement of each steering engine is adjusted, and through the swinging of thighs and the rotating of a waist structure are driven by the parallel connecting rods, and the dancing of shanks is driven by serial connecting rods, so that multiple legged gaits of the hexapod robot are realized. The hexapod robot disclosed by the invention adopts long leg mechanisms, operating ranges of the legs of the robot are enlarged, operating speed is also greatly increased, four gait manners are adopted as the operating manner, and operating capacity of the robot in an unstructured environment is improved.

The invention discloses an elastic supporting undercarriage of a fixed wing type unmanned aerial vehicle based on rack transmission. The unmanned aerial vehicle comprises an unmanned aerial vehicle body, undercarriage main rods and electric telescopic rods. A connecting gear is fixedly mounted at the top end of the undercarriage main rod. The connecting gear is movably connected with the unmannedaerial vehicle through a rotating shaft, a fixed sliding block is fixedly installed at the upper position in the unmanned aerial vehicle, a rack is arranged at the rear portion of the fixed sliding block, a telescopic rod of the electric telescopic rod is fixedly connected with one end of the rack, and a connecting fixing piece is arranged between the telescopic rod of the electric telescopic rodand the rack. According to the elastic supporting undercarriage of a fixed wing type unmanned aerial vehicle based on rack transmission, the orientation effect can be achieved, and the bearing load ofthe rotating shaft is reduced. Meanwhile, the phenomenon that the undercarriage crosses a vertical line when being opened can be avoided. Meanwhile, the excellent damping and buffering effect is achieved, and the excellent protection effect on the unmanned aerial vehicle is achieved.

The invention discloses a tower top dust recovery device for a urea granulation tower. The tower top dust recovery device comprises a granulation tower body and a receiving disc arranged in the tower body, wherein a cylindrical dust recovery chamber is arranged on the top of the tower body; the diameter of the dust recovery chamber is greater that of a tower top vent hole; sprinklers are arranged at upper and lower ends of the dust recovery chamber, and a filling dust suction device formed by an inclined partition plate is arranged between the sprinklers at two ends; a feed pipe connected to the bottom end of the receiving disc is connected with a filter; a discharge hole of the filter is connected with a circulating pump by a material control valve, and an outlet of the circulating pump is connected with the sprinklers at upper and lower ends in the dust recovery chamber by a pipeline; a branch pipe which opens into an evaporator is connected between the filter and the material control valve; and a water replenishing branch pipe is arranged between the material control valve and the circulating pump. Due to the adoption of a tail gas filter washing absorption device for the urea granulation tower, environment is protected; and more importantly, effective value is recovered, the waste of resources is reduced, and the investment in the device can be recovered quickly.

The invention discloses a large dry dense medium fluidized bed separation machine and a separation system. The separation machine mainly comprises a separation machine bed body, an air distribution device, a float discharge device, a sediment discharge device, a quick dense medium circulating device and the like. The separation system comprises a raw material feeding system, the large dry dense medium fluidized bed separation machine, a medium purifying and recycling system, an air supply system, a dust removal system, a control system and the like. The air supply system is mainly provided with a roots blower, a pressure stabilization air storage tank and the like. The raw material feeding system comprises a raw material bin and a feeder. The medium purifying and recycling system mainly comprises a sculping screen, a medium scraper conveyer, a medium bucket elevator, a circulating medium bin, a magnetic separator, a magnetic material bin and the like. The dust removal system mainly comprises an induced draft fan, a dust remover, an air compressor and the like. The separation machine is large in handling amount, high in separation precision, small in medium circulating amount, reliable in running and easy to maintain. The separation system is reasonable in layout, compact in structure, large in handling capacity, good in separation effect and low in capital construction and running cost.

The invention provides a device and a method for pulling down a media resource towards a terminal device. The method for pulling down a media resource towards a terminal device comprises the following steps: transmitting an inquiring request to a content distribution network (CDN) device by a terminal device; after the CDN device receives the inquiring request, returning a success inquiring respond message to the terminal device; after the terminal device receives the respond message, transmitting a file transport protocol (FTP) to the CDN device; and after the CDN device receives the FTP request, pulling down a media resource to the terminal device. The device and the method for pulling down a media resource towards a terminal device solve the problem that because recorded program content becomes old, the recorded program content is deleted from a hard disk by the CDN device, and a user can not watch live programs, and reduce the bearing load of the CDN device.

The invention discloses a control design method of a regional clock cassette mechanism, which belongs to the technical field of timing instruments. The regional clock cassette mechanism comprises a cassette mechanism splint, a stepper motor, a clock hand component and a gear reducing transmission mechanism; the control design method of the regional clock cassette mechanism has the characteristicsthat: the regional clock cassette mechanism comprises a synchronous reducing motor, a gear on the output end of the synchronous reducing motor is directly meshed and connected with a second wheel which is directly arranged on a second wheel shaft, and a hole is arranged on the second wheel and a photoelectric switch is respectively arranged on both ends of the hole. The control design method comprises the steps of power supply to the clock cassette mechanism, the driving to a time base, an hour hand, a minute hand and a second hand, and the setting and the control of alarm information feedback items. Compared with the prior art, the control design method of the regional clock cassette mechanism has the significant and substantial characteristics and significant progress that: the second hand continuously works, a clock can still work for three hours after a 220V main power supply is disconnected to wait for the connection of the main power supply; but if the power from the main power supply is still not obtained, the hour hand and the minute hand are automatically reset to a 12 o'clock position, so that the alarm information that 'the clock fails to work, please pay attention and do not delay the travel time' and the like is sent to a traveler.

The invention relates to a numerically controlled planer, in particular to a slicing mechanism for the numerically controlled planer. The slicing mechanism comprises a horizontal feeding side rest and a lifting carriage. Vertical motion of a transverse beam of an existing planer is replaced by vertical motion of the lifting carriage, and since the lifting carriage is lighter than the transverse beam, carrying load of a machine is lowered, and service life of the machine is prolonged. By the aid of the slicing mechanism, the problem of short service life of the existing planer is solved.

The invention provides a subway lockage payment method and system based on digital currency, and relates to the field of subway lockage. An intelligent terminal generates first communication data during entering ticket checking and passing-gate and encrypts the first communication data to generate an entering-gate identifier, then the entering-gate identifier is obtained at an exiting-gate in a way that an intelligent terminal communicates with a gate AFC ticket card processing unit, and the AFC ticket card processing unit generates second communication data according to an exit identifier andthe first communication data, records the second communication data locally and sends the second communication data to a subway gate upper computer SLE module through a serial port; and after the SLEmodule receives the second communication data and judges a flag bit in the second communication data, the SLE module executes a gate opening action. Since bidirectional concurrent data stream transmission with background online transactions such as Unionpay is not needed, the situations of slow response, high delay and system stability failure of a gate passing machine do not exist when the userpasses through the gate, so that the user can smoothly pass through a subway payment gate in an extremely short time.

The invention discloses a regional clock movement and a control design method, and belongs to the technical field of time instruments. The regional clock movement comprises movement clamping plates, a stepping motor, a clock pointer assembly and a gear reducing transmission mechanism, and is characterized in that: the regional clock movement comprises a synchronous reducer motor; a gear at the output end of the synchronous reducer motor is directly meshed with a secondwheel which is fixedly arranged on a secondwheel shaft; and the secondwheel is provided with a hole and a photoelectric switch is arranged at two ends of the hole. The control design method comprises setting and control of power supply of the clock movement, time base, hour hand and minute hand driving, second hand driving, and alarm information feedback items. Compared with the prior art, the clock movement and the control design method have the prominent substantive characteristics and obvious progress that: the second hand continuously moves, and the clock is ensured to work for 3 hours to wait for connecting a main power supply after the 220V main power supply is cut off; when the clock movement is not powered by the main power supply, the hour hand and the minute hand automatically return to twelve clock, so passengers notice alarm information that the clock is failed and cannot delay the travel; and the like.

The invention discloses a control design method of a regional clock cassette mechanism, which belongs to the technical field of timing instruments. The regional clock cassette mechanism comprises a cassette mechanism splint, a stepper motor, a clock hand component and a gear reducing transmission mechanism; the control design method of the regional clock cassette mechanism has the characteristicsthat: the regional clock cassette mechanism comprises a synchronous reducing motor, a gear on the output end of the synchronous reducing motor is directly meshed and connected with a second wheel which is directly arranged on a second wheel shaft, and a hole is arranged on the second wheel and a photoelectric switch is respectively arranged on both ends of the hole. The control design method comprises the steps of power supply to the clock cassette mechanism, the driving to a time base, an hour hand, a minute hand and a second hand, and the setting and the control of alarm information feedback items. Compared with the prior art, the control design method of the regional clock cassette mechanism has the significant and substantial characteristics and significant progress that: the second hand continuously works, a clock can still work for three hours after a 220V main power supply is disconnected to wait for the connection of the main power supply; but if the power from the main power supply is still not obtained, the hour hand and the minute hand are automatically reset to a 12 o'clock position, so that the alarm information that 'the clock fails to work, please pay attention and do not delay the travel time' and the like is sent to a traveler.

The invention discloses a large dry dense medium fluidized bed separation machine and a separation system. The separation machine mainly comprises a separation machine bed body, an air distribution device, a float discharge device, a sediment discharge device, a quick dense medium circulating device and the like. The separation system comprises a raw material feeding system, the large dry dense medium fluidized bed separation machine, a medium purifying and recycling system, an air supply system, a dust removal system, a control system and the like. The air supply system is mainly provided with a roots blower, a pressure stabilization air storage tank and the like. The raw material feeding system comprises a raw material bin and a feeder. The medium purifying and recycling system mainly comprises a sculping screen, a medium scraper conveyer, a medium bucket elevator, a circulating medium bin, a magnetic separator, a magnetic material bin and the like. The dust removal system mainly comprises an induced draft fan, a dust remover, an air compressor and the like. The separation machine is large in handling amount, high in separation precision, small in medium circulating amount, reliable in running and easy to maintain. The separation system is reasonable in layout, compact in structure, large in handling capacity, good in separation effect and low in capital construction and running cost.

The invention discloses an intelligent cluster dispatching and commanding system, an event processing method and a dispatching and commanding method. The system comprises a dispatching desk communication terminal, a plurality of train communication terminals and a plurality of station communication terminals. A plurality of mutually independent call groups are established in the system. The call groups comprise a plurality of dynamic emergency call groups, a plurality of station working call groups and a crew call group, and members in each call group can perform calls in the group. Through the system and the method provided by the invention, call groups which have different functions and are mutually independent can be effectively divided. The number of members in the call group is small,orderly communication can be carried out, and the communication quality is relatively high. Related events of the train can be normally and effectively processed, the carrying load and the operationdifficulty of workers are reduced, the work of irrelevant platforms is prevented from being interfered, the communication quality and the processing efficiency of emergency events can be effectively improved, and the emergency affair processing effect is improved.

The invention provides an endoscope tube cleaning and disinfecting device for the digestive system department, and relates to the technical field of endoscopes. The endoscope tube cleaning and disinfecting device comprises a base and a mounting device, a displayer is fixedly connected to the surface of the base, a starting device is arranged on the upper surface of the base and comprises a round barrel, the outer surface of the round barrel is rotatably connected with the inner wall of the base, the starting device is arranged on the surface of the base and comprises a protective cover, the outer wall of the protective cover is fixedly connected with the surface of the inner wall of the base, and a moving device is arranged on the surface of a second rotating disc and comprises a threadedrod. The endoscope tube cleaning and disinfecting device solves the problems that the endoscopes are not only used in the industrial field, but also have great medical effects, the surfaces of the endoscopes become dirty after the endoscopes are used generally in the anorectal department, the polluted endoscopes cannot be used by a next patient due to the fact that the endoscopes are not disposable, and thus the endoscopes need to be cleaned.

The invention relates to a multifunctional fishing chair which comprises a seat plate and four supporting feet. One end of the seat plate is connected with a backrest through a rotating shaft. The two sides of the backrest are each fixedly provided with a metal rope. Fixing rings are connected to the metal ropes. The two sides of the seat plate are each provided with multiple fixing columns matched with the fixing rings. The end of the backrest is provided with a blind hole. The multifunctional fishing chair further comprises a metal pull rod. The metal pull rod comprises a first telescopic rod, a flexible metal pipe and a second telescopic rod. The upper surface of the backrest is provided with a cavity and a cover plate. A waterproof cloth is arranged in the cavity. The upper end of the waterproof cloth is provided with a first fixing hole. The left end and the right end of the waterproof cloth are connected with nail type fixing rods through pulling ropes. When the multifunctional fishing chair is in use, the backrest is rotated, the fixing rings on the metal ropes are fixedly matched with the fixing columns, the rotating angle of the backrest is adjusted, the metal pull rod is pulled out of the blind hole, the first telescopic rod and the second telescopic rod are stretched, the flexible metal pipe is bent, the waterproof cloth in the cavity is unfolded, the nail type fixing rods are fixed to the ground, sun shading and rain prevention are convenient, and the angling comfort is increased.

The invention discloses a collar-type neck support. The collar-type neck support comprises a front collar sheet and a back collar sheet, wherein the upper part of the front collar sheet protrudes outwardly to form an arc-shaped alcove for supporting a lower jaw; and the collar-type neck support is characterized in that reinforcing sheets for supporting the two sides of a human head are arranged on the back side of the arc-shaped alcove on the front collar sheet in bilateral symmetry. Through arrangement of the reinforcing sheets for supporting the two sides of the head of a patient, a larger stressing part is provided for the patient, so that the patient can easily finely adjust the posture of the head towards the two sides together with the neck support on the premise of ensuring the wearing firmness of the neck support, and thus feels comfortable; and compared with the conventional technology, the collar-type neck support is more comfortable, practical, relatively low in cost and easy to popularize.

The invention relates to the technical field of bullets and particularly relates to an aluminum alloy material and an application thereof in preparation of bullet shells. The aluminum alloy material includes, by weight, 4.0-7.0% Zn, 1.0-2.0% of Cu, 0.3-0.7% of Mn, 0.01-0.05% of rare earths, 0-0.05% of Ti, 0-0.05% of Cr, and Al. The bullet shells have advantages of high toughness, ablation resistance and good formability and are tolerant of instant high temperature and pressure generated in a bullet compartment and can form elastic deformation without breaking. The bullet shell can bear chamberpressure of 400 MPa and instant high temperature of 1000 DEG C, warhead initial speed can reach 1200 m / s, and problems of deformation, cracking and corrosion of the bullet shell are avoided; comparedwith a steel bullet shell, the bullet shell is reduced by more than 20% in total mass. The parameters can reach the standard of military, so that the bullet shell made of the aluminum alloy materialcan successfully replace a copper bullet shell or a steel bullet shell at present, thus reducing the weight of light weapons and improving maneuvering characteristics and combat capability of individual soldier.

The invention discloses an excavator provided with a movable arm double-support structure. One end of a first extending-and-contracting rod is connected to a rack, and the other end of the first extending-and-contracting rod is connected to a first corner of a triangular connecting plate. A second corner of the triangular connecting plate is connected with one end of a first connecting rod, and the other end of the first connecting rod is connected to a bucket. One end of a second connecting rod is connected to the rack, and the other end of the second connecting rod is connected with one end of a third connecting rod. The other end of the third connecting rod is connected to the bucket. One end of a second extending-and-contracting rod is connected to the rack, and the other end of the second extending-and-contracting rod is connected to the second connecting rod. One end of a third extending-and-contracting rod is connected to the rack, and the other end of the third extending-and-contracting rod is connected to a second slide block. The second slide block is arranged on a third connecting rod in a sleeving manner. One end of a fourth extending-and-contracting rod is connected to the triangular connecting plate, and the other end of the fourth extending-and-contracting rod is connected to a first slide block. The first slide block is arranged on the first connecting rod in a sleeving manner. By means of the excavator provided with the movable arm double-support structure, borne load of each rod is lowered; rotational inertia of a complete machine is lowered; and the excavator is stable in transmission, free of side gaps, high in precision and rigidity and good in dynamics performance.

The invention relates to a sweeper and a water tank system thereof. The water tank system comprises a water pump, a water storage tank, a lower water tank, a controller and a water level detection device, wherein the lower water tank is arranged at the bottom of the water storage tank and is communicated with the bottom of the water storage tank; a water intake is formed in the bottom of the lowerwater tank; the water intake is connected with a water inlet of the water pump; the volume of the lower water tank is far smaller than that of the water storage tank; the water pump is installed on aframe; the installation height of the water pump is lower than that of the water intake; the detection device is used for detecting water volume information in the water storage tank and feeding backthe water volume information; and the water pump is started and stopped according to the water volume information. According to the water tank system, by arranging the lower water tank, the water utilization rate can be increased on the premise that cavitation of the water pump is avoided, and whole vehicle energy consumption is reduced.

The invention provides a control method and device of storage battery charging of a communication station. The communication station comprises a generating set, an input end of commercial power, a storage battery and a communication power supply. The generating set and the input end of commercial power are used for supplying a working power supply to the communication power supply, and the communication power supply is used for supplying power to the load of the communication station and the storage battery. Concretely, the control method comprises: obtaining a commercial power losing signal and a generator starting signal; generating a storage battery charging limited signal according to the commercial power losing signal and the generator starting signal; and limiting the communication power supply to charge the storage battery when the generator is in the power state according to the generated storage battery charging limited signal. The control method and device of storage battery charging of the communication station can limit the generator to charge the storage battery when the commercial power of the communication station breaks down, so that the power supply capacity of the generator is reduced, and the simple configuration of the generator capacity is realized.

The invention discloses a numerically-controlled double housing planer. The numerically-controlled double housing planer comprises a double housing planer base, a carriage, left and right upright columns, a cross beam and a control unit, wherein planning and cutting mechanisms are arranged on front and back sides of the cross beams, and each planning and cutting mechanism comprises a horizontal feed sliding base and a lifting carriage. According to the double housing planer, the carriage, the horizontal feed sliding bases and the lifting carriages are driven by lead screws, and the stability is higher; the planning and cutting mechanisms on two side surfaces of the cross beams are provided with independent lead screws and motors, and workpieces can be machined in a non-interfering manner, so that the working efficiency is higher; the vertical movement of a cross beam of an existing double housing planer is replaced by the vertical movement of the lifting carriages, so that the carrying load of machinery is reduced; and the problems of short service life, poor stability and low working efficiency of the existing double housing planer are solved.

The invention discloses a safe energy-saving intelligent elevator, comprising a lift car, a door system, a guide rail, a balance system, an overload limit device and a control system which are located in a shaftway; the lift car comprises a car body and a lift car frame, and the door system comprises a lift car door and a layer door; door stop devices are arranged on both upper and lower ends of the two sides of the lift car door, each door stop device comprises a fixing component and a door stop component, the balance system comprises a counterweight and placing grooves arranged in two sides of the guide rail, and the counterweight is connected on the top of the lift car by a dragging steel rope and can move up and down along the guide rail. The door stop devices are arranged on the upper and lower ends of two sides of the lift car door, when the lift car door is opened, a spring drives an inner rod to extend to a direction vertical to the lift car door so as to block the lift car door, such that entering and exiting safety of taking personnel is ensured; a total weight of the counterweight is changed by second electric push rods and a bidirectional push rod, such that the elevator lift car and the counterweight are kept balanced all the time, and further the up and down operation safety of the elevator is ensured.

The invention discloses an intelligent cluster dispatching and commanding system, an event processing method and a dispatching and commanding method. The system comprises a dispatching desk communication terminal, a plurality of train communication terminals and a plurality of station communication terminals. A plurality of mutually independent call groups are established in the system. The call groups comprise a plurality of dynamic emergency call groups, a plurality of station working call groups and a crew call group, and members in each call group can perform calls in the group. Through the system and the method provided by the invention, call groups which have different functions and are mutually independent can be effectively divided. The number of members in the call group is small,orderly communication can be carried out, and the communication quality is relatively high. Related events of the train can be normally and effectively processed, the carrying load and the operationdifficulty of workers are reduced, the work of irrelevant platforms is prevented from being interfered, the communication quality and the processing efficiency of emergency events can be effectively improved, and the emergency affair processing effect is improved.

The invention discloses a regional clock movement and a control design method, and belongs to the technical field of time instruments. The regional clock movement comprises movement clamping plates, a stepping motor, a clock pointer assembly and a gear reducing transmission mechanism, and is characterized in that: the regional clock movement comprises a synchronous reducer motor; a gear at the output end of the synchronous reducer motor is directly meshed with a secondwheel which is fixedly arranged on a secondwheel shaft; and the secondwheel is provided with a hole and a photoelectric switchis arranged at two ends of the hole. The control design method comprises setting and control of power supply of the clock movement, time base, hour hand and minute hand driving, second hand driving, and alarm information feedback items. Compared with the prior art, the clock movement and the control design method have the prominent substantive characteristics and obvious progress that: the secondhand continuously moves, and the clock is ensured to work for 3 hours to wait for connecting a main power supply after the 220V main power supply is cut off; when the clock movement is not powered bythe main power supply, the hour hand and the minute hand automatically return to twelve clock, so passengers notice alarm information that the clock is failed and cannot delay the travel; and the like.

The invention relates to the technical field of bullets, in particular to an aluminum alloy material and its application in preparing bullet casings. The aluminum alloy material composition includes zinc 4.0~7.0wt.%, copper 1.0~2.0wt.%, manganese 0.3~0.7wt.%, rare earth 0.01~0.05wt.%, titanium 0~0.05wt.%, chromium 0~ 0.05wt.% and aluminum. The bullet casing made of the aluminum alloy material in the present invention has the remarkable advantages of high strength, toughness, ablation resistance, and good formability. With a chamber pressure of 400MPa and an instantaneous high temperature of 1000°C, the muzzle velocity of the warhead reaches 1200m / s, which effectively avoids the deformation, cracking and corrosion of the shell case. Compared with the steel shell case, the overall quality is reduced by more than 20%. Successfully replace the currently used copper and steel shells, reduce the weight of light weapons, and improve the mobility and combat capabilities of individual soldiers.

The invention relates to a reciprocating traverse-movement type yarn guiding and forming device. The device comprises a main transmission gear, a first driven wheel, an upper gap half-tooth-surface gear, a second driven wheel, a lower gap half-tooth-surface gear, a reciprocating traverse-movement rack and an adjustable-speed motor; the main transmission gear is connected with a speed adjusting motor; the upper side of the main transmission gear meshes with the first driven wheel; the first driven wheel is connected with the upper gap half-tooth-surface gear through a first connecting rod; thelower side of the main transmission gear meshes with the second driven wheel; the second driven wheel is connected with the lower gap half-tooth-surface gear through a second connecting rod; the reciprocating traverse-movement rack is arranged between the upper gap half-tooth-surface gear and the lower gap half-tooth-surface gear; and half tooth surfaces of the upper gap half-tooth-surface gear and the lower gap half-tooth-surface gear are arranged on the same side. Transverse movement of the mechanism can be achieved through one-way rotation of the motor, the requirements for power consumption and heat dissipation of the motor are greatly reduced, and the production cost is reduced.

The invention provides a communication method and device of mobile broadband terminal equipment and mobile terminal equipment. The method comprises the following steps of: a first application program on the mobile broadband terminal equipment receives a first operation calling instruction sent from the second application program of the mobile terminal equipment, wherein the first operation calling instruction is generated by the second application program of the mobile terminal equipment according to the first operation instruction of the user, and the second application program is the upper application program of the first application program; the first application program on the mobile bandwidth terminal equipment carries out corresponding data processing according to the first operation calling instruction and obtains a processing result; and the first application program on the mobile bandwidth terminal equipment sends the processing result to the second application program of the mobile terminal equipment to cause the second application program of the mobile terminal equipment to show the processing result to the user. By use of the method of the embodiment, the carrying load of the mobile terminal equipment can be lowered so as to prolong the duration of flight of the mobile terminal equipment and improve user experience.

The invention belongs to the technical field of air treatment equipment, particularly provides a control method of an air conditioner for a motor train unit, and aims to solve the problem that passengers cannot control the air conditioner of the motor train unit in an existing control method of the air conditioner for the motor train unit due to large temperature difference inside and outside a compartment, especially in winter and summer, in an environment with large temperature difference inside and outside the compartment. Diseases such as cold, headache and allergic rhinitis are easily caused, and when the motor train unit enters a station, an air conditioner compressor keeps high-frequency operation, so that energy is wasted. In order to achieve the purpose, the control method of the air conditioner for the motor train unit comprises the steps that an air conditioner operation mode is obtained, and based on the air conditioner operation mode, the air conditioner is selectively controlled to enter a heating state temperature control mode or a refrigerating state temperature control mode. The temperature difference inside and outside the motor train unit is reduced, meanwhile, the carrying load of the air conditioner is reduced, and energy consumption is reduced.