73results about How to "Avoid stressful situations" patented technology

The invention discloses an anaerobic fluidized bed reactor, characterized in that: the anaerobic fluidized bed reactor is a two-section cylinder which is thin above and thick below, the upper section is connected with the lower section through a taper transition section, a completly mixed reaction zone and a plug flow reaction zone are arranged in the reactor from bottom to top, a guide cylinder is arranged in the completly mixed reaction zone, a cover hood is arranged above the guide cylinder, a liquid-solid separator is arranged in the plug flow reaction zone, a three-phase separator is arranged above the liquid-solid separator, the water outlet of the three-phase separator is successively connected with a circulating pump and a jet nozzle through a circulating pipeline, and a water inlet pipeline is connected with the jet nozzle. By using outer circulation to drive inner circulation, the efficiency of the reactor is greatly raised.

The invention relates to a traditional Chinese medicine fumigating treatment device for peripheral blood vessels of lower limbs and effectively solves the problems that in the fumigating process of anexisting fumigating treatment device for lower limbs, the amount of steam cannot be regulated, functions are single, and completeness is poor. The technical scheme adopted by the invention lies in that an air hole regulating device is used, so that the amount of the steam can be regulated by feet according to autologous needs; exhaust valve regulating devices are used, so that the amount of exhaust can be regulated according to the amount of the steam, and the situation that pressure in a fumigating chamber is too high can be avoided; a lifting device is used, after fumigating is completed, apart of medicinal liquid possibly remains, waste is caused if the remaining medicinal liquid is directly dumped, through the lifting device, the fumigating state can be switched to a foot soaking state, and the medicinal liquid can be sufficiently used; a medicine decocting barrel is used, so that the completeness of equipment is stronger; and a medicine pressing plate is used, so that when medicines are decocted, traditional Chinese medicines can be extruded, and the utilization rate of the traditional Chinese medicines is higher. The traditional Chinese medicine fumigating treatment devicedisclosed by the invention is simple to operate, high in suitability and diversified in functions, and can better meet requirements of people.

The invention provides a method and system for collecting web data. The system comprises a data providing device and a data collecting device. The data providing device is used for collecting the web data. The data collecting device comprises a load detecting module, a data collecting module and a data analyzing and processing module. The load detecting module is used for detecting the load situation of the data providing device and judging whether the load exceeds the threshold value or not, if yes, the load situation of the data providing device is detected again in a period of time, and if not, the data collecting module is notified to collect the web data of the data providing device. The data collecting module is used for collecting the web data stored in the data providing device and storing the collected web data to a database. The data analyzing and processing module is used for processing the web data stored in the database. By means of the method and system for collecting web data, the web data can be collected accurately and efficiently with a simple structure, and the situation that the pressure of the front end of the webpage is too large is avoided.

The invention discloses a combined type large household garbage incinerator, and relates to a garbage incinerating device. The combined type large household garbage incinerator comprises a main frame, a fire grate frame is installed in the main frame, is provided with a fire grate and comprises a fixed frame, a movable frame and a supporting wall plate, the fixed frame is connected with the main frame through the supporting wall plate, and the movable frame is installed on the fixed frame in a sliding mode through a supporting guide device. The fire grate comprises a fixed fire grate body and a movable fire grate body which are the same in structure, the fixed fire grate body and the movable fire grate body are each formed in the mode that a plurality of fire grate sheets are connected into a whole in the width direction of the fire grate, the ends of the adjacent fire grate sheets are connected in a lap joint mode, the fire grate sheets are provided with pin holes respectively, the fire grate sheets of the fixed fire grate body are connected with the fixed frame through hinge pins, the fire grate sheets of the movable fire grate body are connected with the movable frame through hinge pins, and spring pins are arranged at the two ends of the hinge pins respectively for limiting. The fire grate of the combined type large household garbage incinerator is in the combined mode, the incinerators different in processing capacity are rapidly designed easily, most parts are the same in structure, the number of the types of the parts is small, the interchangeability is good, and the manufacturing cost and the maintenance cost are low.

The invention relates to a pump (1) for conveying a liquid, comprising at least one pump housing (2), which has at least one inlet (3) and at least one outlet (4) and an inner circumferential surface (13) and a geometric axis (53), wherein an eccentric (5), which can be rotated about the geometric axis (53) in relation to the pump housing (2), is arranged within the pump housing (2), wherein a deformable element (7) is arranged between the inner circumferential surface (13) of the pump housing (2) and the eccentric (5) and wherein a conveying channel (8) from the at least one inlet (3) to the at least one outlet (4) is formed by means of the deformable element (7) and the inner circumferential surface (13) of the pump housing (2) and wherein furthermore the deformable element (7) is pressed against the pump housing (2) by the eccentric (5) in some sections in such a way that at least one movable seal (9) of the conveying channel (8) and at least one closed pump volume (10) in the conveying channel (8) are formed, which at least one seal and at least one closed pump volume can be moved in order to convey the liquid along the conveying channel (8) from the inlet (3) to the outlet (4) by means of a rotational motion of the eccentric (5), wherein at least one receptacle (14), in which at least one edge region (20) of the deformable element (7) is accommodated, is formed by the circumferential surface (13) of the pump housing (2) and at least one counter-holder (15).

The invention provides a rapier loom which comprises a workbench, a warp let-off mechanism, a weft let-off mechanism, a slitter edge cutting mechanism and a rolling mechanism. The slitter edge cutting mechanism comprises a cutter rest, a fixed cutter body and a movable cutter body, the fixed cutter body is provided with a first blade, the movable cutter body is provided with a second blade, the fixed cutter body is fixed to the cutter rest in a height-adjustable mode, the movable cutter body is hinged to the fixed cutter body, and the first blade and the second blade abut against each other to form a cutting opening; the slitter edge cutting mechanism further comprises a motor driving the movable cutter body to rotate, a transmission shaft and a rotating disc, and the transmission shaft is controlled by the motor and fixedly connected to the center of the rotating disc; the cutter rest is provided with a longitudinal sliding groove, a sliding block is arranged in the sliding groove, a first connecting rod used for driving the sliding block to rise and fall is arranged between the sliding block and the rotating disc, a second connecting rod used for pushing and pulling the movable cutter body is arranged between the sliding block and the movable cutter body, one side of the sliding block is fixedly connected with the second connecting rod, and the second connecting rod is hinged to the movable cutter body; the other side of the sliding block is hinged to the first connecting rod, and the first connecting rod is hinged to the eccentric position of the rotating disc.

The invention provides a fatigue detection device with reinforcing rib members on the surface. The fatigue detection device comprises: a fixing seat, a fixture and a supporting frame, wherein the fixing seat at least comprises two oppositely arranged fixing plates for fixing a fiber sample strip from both sides; the fixture comprises a rectangular fixing frame and an elastic pressing block, the rectangular fixing frame comprises an upper fixing plate and a lower fixing plate; the elastic pressing block is fixedly connected to opposite sides of the upper fixing plate and the lower fixing plate;and the supporting frame is used for supporting and fixing the fixing seat. Compared with the prior art, the fatigue detection device provided by the invention has the beneficial effect that, in thefatigue detection device with reinforcing rib members on the surface, the elastic pressing block is arranged on the both sides of the fiber sample strip, a fatigue test is performed on the fiber sample strip through the elastic pressing block without using a vacuum suction cup, meanwhile, since the elastic pressing block has certain elasticity, the situation that the middle of the fiber sample strip is not stressed is avoided, so that the accuracy of the test result is ensured.

The invention relates to the technical field of aluminum material machining equipment, and discloses an aluminum material cutting device with an automatic feeding function. The aluminum material cutting device comprises a rack and a feeding unit, wherein the feeding unit comprises a conveying belt and a driving structure used for driving the conveying belt, wherein the conveying belt is straightened and arranged on the rack, the driving structure is arranged in the conveying belt, the driving structure comprises a driving gear and a rectangular frame, the rectangular frame is slidably connected with the rack, a rack is arranged in the rectangular frame, the driving gear is an incomplete gear, the driving gear is rotatably connected with the rack, and the driving gear is engaged with the rack; and a one-way locking piece for one-way clamping is arranged between the rectangular frame and the conveying belt. The scheme of the invention can solve the technical problem that aluminum materials cannot be automatically fed and cut in the prior art.

The invention provides a resource configuration method, a network device and a base station. The method includes: generating a resource configuration command, which includes a resource proportion of configuration resource of at least one PLMN group and at least one PLMN group to wireless network total resource by the network device, by the network device, wherein the PLMN group includes a first PLMN group and the first PLMN group includes at least two PLMNs; issuing the resource configuration command to the base station for enabling the base station to distribute resource for each PLMN based on the resource proportion of at least one PLMN. According to the embodiment of the invention, resource distribution can be performed according to PLMN group, so that at least two PLMNs in each PLMN group can share the resource in the PLMN group. Thus, resource distribution flexibility is improved and resource utilization rate is improved.

The invention discloses a femoral arteriovenous intervention postoperative compression hemostasis device, and belongs to the technical field of medical instruments. The device comprises a compression belt, a left connecting plate of which the side wall is provided with a left rack fixedly connected with the left connecting plate, a right connecting plate of which the side wall is provided with a right rack fixedly connected with the right connecting plate, a fan-shaped seat of which the cross section is of a fan-shaped structure, a locking device arranged on the fan-shaped seat, a control device arranged on the fan-shaped seat, and a precise pressing device arranged on the inner wall of the left rack, wherein the left rack and the right rack are of arc-shaped structures; and the side wall of the fan-shaped seat is provided with a guide sliding strip arranged along an arc-shaped path, and the guide sliding strip is in sliding fit with the right rack. By means of the locking device, when the artery and vein of a patient are pressed for a certain time, pressing of the artery and vein of the patient is released, and the precise pressing device works to drive a pressing plate to move in the direction of a buffer air bag, so that a pressing head on the pressing plate conducts precise pressing on the artery and vein of the patient.

The invention discloses a flip antenna synchronous stretching system and a control method. The system includes a central framework, horizontal stretching mechanisms, an antenna column framework and ahydraulic system, wherein the central framework is hinged with the horizontal stretching mechanism, the horizontal stretching mechanisms can perform flipping motion around a hinge point, the antenna column framework is disposed on the horizontal stretching mechanisms, and the hydraulic system controls the horizontal stretching mechanisms for realizing flipping and horizontal stretching operation of the horizontal stretching mechanisms. The system is advantaged in that a side block antenna consists of two sets of horizontal stretching mechanisms, the side block column framework load is evenly distributed on each arm of the two sets of horizontal stretching mechanisms, stiffness of the entire antenna front is improved, and erection requirements of large-diameter antenna fronts are met.

The invention relates to connecting pipe screwing equipment, belongs to the technical field of clamping equipment, and discloses telescopic connecting pipe screwing equipment for building construction. The telescopic connecting pipe screwing equipment comprises an upper clamping sleeve and a lower clamping sleeve. Upper connecting plates are mounted at two ends of the upper clamping sleeve, lower connecting plates are arranged at two ends of the lower clamping sleeve and are connected with the upper connecting plates by nuts and studs, knobs are arranged on the tops of the studs, the lower ends of the studs are nested in sleeves, and bottom plates are mounted at the bottoms of the sleeves. The telescopic connecting pipe screwing equipment for building construction has the advantages that owing to the upper clamping sleeve, the lower clamping sleeve, the studs and the sleeves, a pipeline clamping degree is high, and pipelines are prevented from being loosened; the height of an integral mechanism can be adjusted via the studs, so that the integral mechanism can be adjusted according to actual construction places, the heights of the pipelines keep consistent, the problem of different pressures due to different heights of pipelines is solved, and the service life of each pipeline is prolonged; the telescopic connecting pipe screwing equipment does not need to be maintained frequently, and accordingly the integral budget of an enterprise is reduced.

The invention discloses a system and process for deep dehydration of sludge by using an ultrahigh pressure squeezer. The system comprises a sludge tank, primary sludge dewatering equipment, a sludge conditioning device, a dry sludge conveying device, an ultrahigh pressure squeezer and a blanking and sludge discharging conveying device which are connected in sequence, and further comprises a quantitative dosing device connected with the sludge conditioning device, wherein a feeding port is formed in one side, namely, a feeding end, of the ultrahigh-pressure squeezer; a full material test sensor and a switch valve are arranged on the other side of the ultrahigh pressure squeezer, namely, a top back flushing opening far away from the feeding end; the full material test sensor is connected with the signal input end of a PLC control system, and the switch valve is connected with the signal output end of the PLC control system; and the sludge conditioning device adopts a double-screw stirrer. The system can solve the problem of deep dehydration of the sludge with the moisture content of about 80%, can reduce the moisture content of the municipal sludge to 50% or below on the premise of low cost, and is convenient for harmless, reduction, stabilization and resourceful treatment of the municipal sludge.

The invention discloses a data recovery method. The method comprises the steps: determining the number of target disks used for completing data recovery; determining a total bandwidth of data recoveryaccording to the number and a preset target recovery speed of the target disk; and according to the total bandwidth, setting an actual recovery speed of the target disk to enable the target disk to perform data recovery according to the actual recovery speed. Therefore, according to the invention, the total bandwidth of the recovered data can be reasonably set for the clusters of different scales, so that the performance waste or the pressure on the front end can be avoided while the data recovery is normally completed, and the requirements of users can be better met. In addition, the invention provides a data recovery device, equipment and a medium corresponding to the method.

The invention discloses high-altitude fire-fighting equipment. The high-altitude fire-fighting equipment comprises a fire-fighting truck, an unmanned aerial vehicle, a water tank, a water spraying device and an electric control system, wherein the electric control system is arranged on the fire-fighting truck, the water spraying device is arranged on the water tank and communicates with the interior of the water tank to pump a fire extinguishing agent in the water tank, the water tank is arranged on the fire-fighting truck, one end of the unmanned aerial vehicle is connected with the electriccontrol system through a cable, and the water tank is suspended at the other end of the unmanned aerial vehicle. By means of the high-altitude fire-fighting equipment, high-rise buildings can be veryconveniently subjected to fire extinguishing.

The invention belongs to the technical field of medical equipment, and specifically discloses an oxygen tube fixing device for a tracheotomy patient. The fixing device comprises a hose body. One end of the hose body is a wrapping portion for wrapping an oxygen tube, the other end is a fixing portion fixedly disposed on a tracheotomy inner tube in the sleeve mode, and a through hole for the oxygentube to pass is disposed between the wrapping portion and the fixing portion on the hose body. Compared with the prior art, the oxygen tube and the tracheotomy inner tube can be fixedly connected firmly. On one hand, the position of the oxygen tube is not changed; on the other hand, the oxygen tube does not fall off when a patient coughs and turns the body. At the same time, when the tracheotomy inner tube and the oxygen tube need replacement, the fixing device can separate the oxygen tube and the tracheotomy inner tube quickly and simply.

The invention provides a method for preparing an ultrathin silicon carbide epitaxy substrate at low temperature. The method comprises the following steps: S1, coating a silicon carbide layer on the surface of a base to obtain a first structure body; S2, heating the first structur body to 800-1000 DEG C to obtain a second structural body; S3, simultaneously carrying out etching and illumination catalysis on the surface of the heated silicon carbide layer in the second structural body to obtain a third structural body, the etching gas being hydrogen chloride, H2, SF6 and O2; S4, performing laserpulse impact on the surface of the silicon carbide layer obtained after etching and illumination catalysis in the third structural body to obtain a fourth structural body; and S5, carrying out post-processing on the fourth structural body to obtain the silicon carbide epitaxy substrate. According to the method, the silicon carbide layer is subjected to illumination catalysis matched with etchingof hydrogen chloride, H2, SF6 and O2, so that the activity of the substrate is accelerated, and low-temperature rapid fluidization can be realized; and laser pulse impact enables impurities on the surface of the substrate to be removed quickly, and the thickness of the substrate is reduced.

The invention provides a rapier loom which comprises a workbench, a warp let-off mechanism, a weft let-off mechanism, a slitter edge cutting mechanism and a rolling mechanism. The slitter edge cutting mechanism comprises a cutter rest, a fixed cutter body and a movable cutter body, the fixed cutter body is provided with a first blade, the movable cutter body is provided with a second blade, the fixed cutter body is fixed to the cutter rest in a height-adjustable mode, the movable cutter body is hinged to the fixed cutter body, and the first blade and the second blade abut against each other to form a cutting opening; the slitter edge cutting mechanism further comprises a motor driving the movable cutter body to rotate, a transmission shaft and a rotating disc, and the transmission shaft is controlled by the motor and fixedly connected to the center of the rotating disc; the cutter rest is provided with a longitudinal sliding groove, a sliding block is arranged in the sliding groove, a first connecting rod used for driving the sliding block to rise and fall is arranged between the sliding block and the rotating disc, a second connecting rod used for pushing and pulling the movable cutter body is arranged between the sliding block and the movable cutter body, one side of the sliding block is fixedly connected with the second connecting rod, and the second connecting rod is hinged to the movable cutter body; the other side of the sliding block is hinged to the first connecting rod, and the first connecting rod is hinged to the eccentric position of the rotating disc.

The invention discloses a full-automatic control selective wave soldering device. The device is characterized by comprising a main body, a controller, a conveying guide rail, a scaling powder spraying mechanism, a double-layer preheating mechanism and a selective soldering mechanism, wherein the controller, the conveying guide rail, the scaling powder spraying mechanism, the double-layer preheating mechanism and the selective soldering mechanism are arranged on the inner side of the main body, the controller comprises a conveying controller, a spraying controller, a preheating controller and a soldering controller, the spraying controller comprises a pressure controller, a pressure sensor, a flowmeter and a pressure reducing valve, the pressure controller is connected with the pressure sensor, the flowmeter and the pressure reducing valve, the pressure sensor is mounted on a spraying valve, and the flowmeter and the pressure reducing valve are mounted on a spraying pipe at the bottom end of the spraying valve. Through the arrangement of the pressure sensor, the pressure controller, the pressure reducing valve, the flowmeter and other structures, the situation that the pressure of a sprayer on the spray valve is too high can be avoided; and through the arrangement of a temperature control chip, a temperature sensor and other structures, the situation that the temperature of the preheating controller in use is too high can be avoided.

The invention discloses an infrared hydrogen-rich intelligent hydrotherapy instrument. The instrument comprises a bed body, an ultrasonic generator, an auxiliary instrument and a control device. The ultrasonic generator is arranged on a water supply device of a hydrotherapy bed, the movable auxiliary instrument is arranged on one side of the hydrotherapy bed, the ultrasonic generator makes sound wave energy (generating high-frequency oscillation waves (1.7MHz to 2.4MHz, the wave band exceeds the auditory range of people, and the hearing of people cannot be affected)) act on fluid through a diaphragm, the fluid becomes an energy conduction medium while the safety of the fluid is guaranteed, the energy conduction medium acts on the intestinal tract, the cleaning effect of the intestinal tract is effectively improved, the ultrasonic energy can effectively reduce damage to the intestinal tract, and stubborn pollutants can be removed; meanwhile, when an infrared lamp of an irradiation device is turned on, the abdomen of a user can be heated, and therefore the blood circulation of the abdomen is improved; meanwhile, the intestinal tract is more comfortable, the situation of intestinal tension is avoided, the intestinal tract is relieved, and the intestinal lavage effect is improved.

The invention belongs to the technical field of health care equipment, and particularly relates to cardiology department postoperative rehabilitation nursing training equipment. The cardiology department postoperative rehabilitation nursing training equipment comprises a bottom plate; a horizontal seat is fixedly installed on the bottom plate through a supporting frame; a headrest is fixedly installed on the front end face of the horizontal seat; a leg training mechanism is installed behind the horizontal seat; arm training mechanisms are symmetrically installed on the left side and the right side of the horizontal seat; two limiting supporting plates are installed on the bottom face of the horizontal seat; and a limiting mechanism is rotationally installed between the two limiting supporting plates. In the process of performing exercise rehabilitation training on a postoperative patient in the department of cardiology, the situation that the knee joint is pressed due to the fact that the knee joint of the patient cannot be bent is avoided; and meanwhile, the situation that the trunk is pulled to move when the four limbs of the patient move is avoided.

The invention discloses a batch message queue verification method, electronic equipment and a medium, and is characterized in that the verification method comprises the following steps that: S1, an upstream system sends a message queue to a downstream system, the message queue has a version number, S2, the downstream system receives the message queue, and S3, the downstream system verifies the message queue. According to the method, the upstream system is prevented from sending information item by item and the downstream system is prevented from consuming information item by item, all message queues are prevented from being taken out at the same time, the use amount of a CPU (Central Processing Unit) is reduced, the risk of the system is reduced, the complexity of the system is also reduced, the code development of the system is facilitated, and the generalizability is enhanced.

The invention relates to an artificial intelligence technology, and provides a security and privacy level maintenance method and a device, electronic equipment and a storage medium, and the method comprises the steps: collecting key data of a client, obtaining a page corresponding to a channel number to guide the client to input basic information, associating the basic information with the channelnumber, and sending the associated basic information to a message queue; matching the basic information of each client with data in a plurality of preset data sources, calculating security and privacy levels, and generating a landing data table; and assembling the landing data table to obtain a new table, and pushing the new table to the local database to update the client security level and theprivacy level. According to the invention, the security level and the privacy level of each client are calculated according to the security and privacy level weight ratio and the channel number of each client, so that the management efficiency of the security level and the privacy level of the client is improved. In addition, the invention also relates to a blockchain technology, and the preset data source can be stored in the blockchain.

The invention discloses a piston channel engine which comprises a cylinder and a side direction connection piston. The cylinder is matched with the side direction connection piston, a cylinder cover is arranged at two ends of the cylinder, a cylinder cover air distribution door is arranged on the cylinder cover, a fuel inlet is arranged on at least one cylinder cover, a channel for communicating two ends of the side direction connection piston is arranged on the side direction connection piston, and a piston air distribution door is arranged on the channel. An air valve is arranged on a piston of the piston channel engine so that quantity of valves arranged on the cylinder or the cylinder cover is reduced, circulation resistance and throttling loss are further reduced, efficiency of the engine is improved, simultaneously degree of freedom of arrangement of air distribution channels is increased, and the piston channel engine has a wide application prospect.

The invention relates to a quartz boat maintenance method which comprises the following steps: performing a deposition process of a silicon film on the surface of a to-be-plated part on a quartz boat loaded with the to-be-plated part, and directly performing a maintenance process on the quartz boat after the deposition process under the condition that the temperature of the quartz boat after the deposition process is not reduced to room temperature, the maintenance process comprises high-temperature oxidation treatment. According to the method disclosed by the invention, the silicon part on the surface of the silicon film deposited on the surface of the quartz boat can be oxidized into silicon oxide, so that the stress borne by the quartz boat is reduced, and the probability of cracks or fractures of the quartz boat is further reduced. And meanwhile, a long-time cooling step does not exist between the deposition process and the maintenance process, that is, the temperature of the quartz boat cannot be greatly reduced, so that the stress condition caused by large temperature change is avoided.

The invention discloses a full-time open interactive geology teaching laboratory system, which comprises a laboratory equipment management subsystem, a laboratory reservation subsystem, an experiment management subsystem, a laboratory safety subsystem, a first communication module, a second communication module and a mobile terminal, the laboratory equipment management subsystem is connected with the laboratory reservation subsystem through the first communication module, the experiment management subsystem is connected, and the laboratory reservation subsystem is connected with the laboratory safety subsystem through the first communication module. The experiment management subsystem is connected with the mobile terminal through the second communication module, and the laboratory safety subsystem is connected with the mobile terminal through the second communication module. Students can reserve a laboratory for experiments by using after-class time, experiment guidance teachers can perform experiment guidance, experiment discipline maintenance and the like without going to the laboratory remotely, and full-time opening of the teaching laboratory is realized.

The invention specifically relates to a manual press and aims to provide a pressure-limiting manual press capable of limiting the upper limit of pressure. According to the technical scheme adopted bythe invention, the pressure-limiting manual press comprises a base and a pressing device. The pressing device is erected above the base through a reversed L-shaped supporting arm; the upper end of a connecting shaft penetrates out of an end cover and is connected to an adjusting hand wheel, and a pressure-limiting mechanism is arranged on the connecting shaft; and the connecting shaft is composedof an upper half shaft and a lower half shaft, and the pressure-limiting mechanism comprises a plurality of vertical key grooves which are uniformly formed in the circumference of the lower end of theupper half shaft, wherein the sections of the key grooves are in isosceles trapezoid shapes. The pressure upper limit of the manual press can be limited to avoid the situation that the pressure is excessively large.

The invention provides a method and a device for migrating files. The method comprises the following steps: selecting a first file with a highest priority from all files to be migrated; selecting a first node by using the weight of each node in an overall data set; recording a corresponding relation between each node and the weight of a distributed storage system in the overall data set; and migrating the first file from a source distributed sub volume to a target distributed sub volume via the first node. Through the technical scheme of the invention, all nodes included in the source distributed sub volume participate in a file migration; the file migrating speed can be improved; the situation of the excess pressure of a certain node can be avoided; the processing performance of each node cannot be influenced; the pressure load of the nodes can be balanced; meanwhile, the data consistency of the files before and after the migrating can be ensured.