44results about How to "Improve refined management" patented technology

The invention discloses a manual coal-mine-tunneling ventilation-air-cylinder air outlet control device. The manual coal-mine-tunneling ventilation-air-cylinder air outlet control device comprises a support, a hardness air cylinder and a guiding rail. The hardness air cylinder penetrates through the support, the guiding rail is arranged above the support, hanging cables are connected to the top of the guiding rail, a sleeve is fixed to the top of the support, a sliding block is fixed on the sleeve and matched with the guiding rail, a universal joint is arranged between the top of the hardness air cylinder and the support, a rotating piece of the universal joint extends into the sleeve, a swinging piece of the universal joint is fixed to the top of the hardness air cylinder, a plurality of blades are arranged on an outlet in the hardness air cylinder and form a circular-truncated-cone-type structure, the small end of the circular-truncated-cone-type structure is close to the hardness air cylinder, a blade opening-and-closing mechanism is arranged on the hardness air cylinder, and a turning adjusting rod is fixed to the bottom of the hardness air cylinder. The manual coal-mine-tunneling ventilation-air-cylinder air outlet control device is convenient to install and use and high in safe reliability, the problems that as the local ventilator power is continuously improved, and the diameter of the air cylinder is increased, circulation air is caused, the local air speed of a working area is super high, and the working condition is poor are solved, and an air-flowing field in a roadway can be reasonably controlled.

The invention discloses an intelligent flocculant decision-making system which is applied to a water purification subsystem of a water supply system of a water plant and specifically comprises a waterquality acquisition module, a feedforward control module, an image acquisition module and a feedback control module. According to the technical scheme, the feeding amount of the flocculant can be flexibly adjusted at the beginning and midway of flocculant feeding according to the water quality of the raw water and the water body sedimentation change of the flocculating sedimentation tank; reasonable addition of the flocculant is intelligently and autonomously guided and controlled, and then the purposes of helping a water plant to save medicine consumption, accelerating the automation processof the water plant and improving refined management are achieved.

The invention discloses a method for judging the coal feeding amount of a unit under a variable load based on a power plant SIS. The recommended value of the real-time coal feeding amount under the current load is predicted by conducting statistics on historical values of the coal feeding amount of a previous section of the power plant variable load and the unit load through an SIS platform, a calculating method for the real-time coal feeding amount of the unit under the variable unit is given in the situation that the heat value of coal as fired is hard to determine, the data support is provided for optimization of the variable load state and stable operation of a power plant, and the fuel fine management level of the power plant is improved.

The invention discloses a system for visualizing temperature tracks of cold chain logistics. The system is characterized in that a positioning device is mounted on a refrigerator truck, so that the tracks can be visualized, and ZigBee measured temperatures are superposed on the tracks in color forms; a plurality of ZigBee temperature measurement points are arranged in a compartment of the refrigerator truck, sensed temperatures are transmitted to a ZigBee gateway, and refrigeration can be carried out in various temperature zones under the control of the ZigBee gateway according to real-time temperatures; temperature information can be uploaded to a cloud database by the ZigBee gateway, temperature data can be downloaded from cloud by a mobile terminal, the temperatures of a plurality of regions of the compartment can be displayed in a visualization manner, and accordingly 'temperature control visualization' can be implemented; the temperature tracks of the temperature zones where goods of customers are located can be acquired by mobile phones of the customers, and accordingly 'temperature track visualization' can be implemented. According to the scheme, the system has the advantages that the competitiveness of cold chain logistics companies can be improved, the throughput can be improved, and the quality of cold chains can be guaranteed; the temperature tracks of the various temperature zones can be monitored by a dispatching center via the internet, accordingly, delicacy management on the cold chains can be strengthened, and technical rectification can be timely carried out by means of big data analysis.

The invention discloses a converter, and a method and a device for distributing electric energy for the converter, and an electric energy distribution system. The method is adopted for distributing the energy of a power supply end to a plurality of loads; the method comprises the following steps that the distribution coefficient of the energy consumption of each load is obtained according to the load quantity and the rated energy consumption demand; the callable energy range of the loads is obtained; and the energy consumption of each load is distributed according to the callable energy rangeand the distribution coefficient. The distribution coefficient of the energy consumption of each load, namely the proportion of the total energy supply needed by the load, is determined according to the number of the loads and the energy consumption requirements of the loads; the energy consumption of each load can be reasonably distributed according to the energy distribution coefficient and thecallable energy range of each load, namely the floating range of the energy consumption of the load, and then the utilization rate of energy can be improved. Effective scheduling of the electricity utilization system with multiple loads is guaranteed. The energy consumption of the loads is controllable, and fine management and efficient utilization of system energy are realized.

The invention discloses a lead-acid storage battery pack remote monitoring and online repairing system based on internet of things and a cloud platform; the remote monitoring and online repairing system comprises a battery state monitoring device and a battery online repairing device, wherein the battery state monitoring device and the battery online repairing device are distributed on each lead-acid storage battery pack; the system further comprises a data transmission module which is connected with the cloud platform through the internet of things; and the data transmission module is in communication with the battery state monitoring device and the battery online repairing device in a wired or wireless communication mode for uploading the state parameters of the lead-acid storage batterycollected by the battery state monitoring device to the cloud platform, and receiving a command from the cloud platform to control the battery online repairing device o to perform online repairing onthe lead-acid storage battery. According to the system, an online sulfur removal technology is integrated, and the purpose of recovering the battery capacity and prolonging the service life of the battery is achieved by preventing and eliminating lead sulfate crystallization formed by the battery through resonance pulse disturbance.

The embodiment of the invention provides a business service point classification method and device, electronic equipment and a storage medium, and relates to the field of big data. Business feature data of at least one business service point in a current evaluation period is obtained, the processing of the business feature data is performed according to a preset integral rule and an analytic hierarchy process model, the target business score of at least one business service point is obtained, the at least one business service point is clustered according to the target business score, and the classification level of the at least one business service point is obtained, so that objectivity, accuracy and comprehensiveness of business service point evaluation are improved, fine management of the business service points is facilitated, the incentive constraint on the business service point is enhanced, the business capability of the business service point is improved, and the sustainable development of the business service point is promoted.

The invention provides a multifunctional intelligent control system based on an intelligent electric meter. The system comprises: a data collector connected in a transformer area and used for collecting the data of all parts in the transformer area; a monitoring module connected with the data collector and used for detecting user voltage, current and electric quantity, monitoring distribution transformer voltage, current and load rate, monitoring reactive compensation and phase-change switch controllable resource information and checking user transformer relation; a data calculation and analysis module connected with the monitoring module and used for carrying out transformer area characteristic analysis according to the detection data of the detection module; an optimization coordinationcontrol module connected with the data calculation and analysis module and used for making an adjustment strategy according to the analysis result of the data calculation and analysis module and adjusting the operation state of the transformer area; and a user interaction function module connected with the data calculation and analysis module and used for feeding back the transformer area state information to a user and providing an interaction interface. According to the invention, the problem of difficulty in transformer area monitoring and management is solved, and the fine management levelof the transformer area is improved.

The invention discloses a flow system for base station construction of communication engineering, which adopts the technical proposal comprising the following steps: providing requirement by a network, transmitting a confirmed site by a resource center of a county company, consulting the point by the resource center of the county company, preliminarily approving reported expense audit by a proprietor, replying the expense audit by the resource center, confirming transition type of site design and drilling, signing a contact, designing a graph, applying for files, issuing the files, introducing a power supply for establishing transmission to a machinery room, installing equipment, switching on the equipment, post evaluating, evaluating the report, receiving inspection and handing over, and handing over and confirming. The flow system divides each step and detail for the base station construction, can strictly normalize the steps for the base station construction, sound a management system for the base station construction of handset operators, improve efficiency for the base station construction, promote refined management for the base station construction, construct a set of complete, normal and closed loop construction flow, and is convenient for management of the base station construction, so that a company manager can bring the base station construction work into operating management work better.

Provided in the invention is a task-driven type intelligent electricity sales business support system. An information source and an information model that are associated with an electricity sales business are established, wherein the information source serves as an object for dynamic data collection and the information source model includes various transaction centers, industry information providers and third-party information distribution channels; the information model defines a normalization format for acquiring data from a data source to carry out unified collection and processing conveniently; a dynamic data acquisition system based on automatic searching and a public interface is established; automatic data acquisition is carried out on a description data source; a data analysis method based on an electricity sales business model is established, the collected data can be analyzed, and various effective business tasks are outputted; and an automatic task scheduling module is realized and task assignment, tracking and checking are carried out on outputted tasks.

The invention provides a distributed photovoltaic ultra-short-term generated power prediction method and system, and belongs to the technical field of power dispatching. The prediction method comprises the following steps: S1, training based on sample data to obtain a distributed photovoltaic power prediction model; s2, according to real-time generated power and weather forecast data, utilizing the distributed photovoltaic power prediction model to carry out generated power prediction; the step S1 comprises the following steps: S11, acquiring sample data, wherein the sample data comprises historical power generation power and historical meteorological data; s12, performing normalization processing on the sample data; s13, establishing an LSSVM (least square support vector machine) prediction model; s14, optimizing kernel parameters of the LSSVM model by using a particle swarm algorithm; and S15, constructing a distributed photovoltaic power generation power prediction model. According to the invention, by constructing the generation power prediction model and the prediction system, distributed photovoltaic online prediction modeling and model online training optimization are realized, high-precision power prediction data are output, and the new energy grid-connected access and consumption management level is improved through auxiliary scheduling.

The invention provides a water quality sampling device for hydrology and water resource engineering. The device comprises a rod body and a sampling bottle, the rear end of the rod body is provided with a wire wheel and a measuring scale wheel, the front end of the rod body is provided with a wire guide ring, an electric wire is wound on the wire wheel, scales are arranged on the electric wire, and the electric wire penetrates through the wire guide ring to be connected with the sampling bottle; a measuring scale is arranged on the measuring scale wheel and is fixedly connected with the wire guide ring; a balancing weight is arranged at the bottom of the sampling bottle, an annular electromagnet is arranged on the inner side of a bottle opening of the sampling bottle, a baffle is arranged at the end, deviating from the bottle opening, of the annular electromagnet and hinged to the annular electromagnet, the diameter of the baffle is larger than that of the bottle opening, and a blocking cover is arranged on the outer side of the bottle opening and provided with an electromagnet. One end of the electric wire is connected with a power supply, and the other end of the electric wire penetrates through the balancing weight and the bottle bottom to be connected with the electromagnet. The distance from the sampling point to the shore can be determined through the extension length of the measuring scale, and the height from the sampling point to the water surface can be determined through the extension length of the winding rope so that the sampling position is accurately positioned, and the water quality monitoring accuracy is improved.

The invention discloses a household storage information management system, comprising generating a unique two-dimensional code for each item for identification at a storage step of the item, and records information about the items, partition the storage locations. A unique two-dimensional code is generated and identified for each storage location, and the two-dimensional code of the object. A 2D code of a storage location is associate with each other. Through database state management of stored items, including storage time setting, Records of the use state of the articles, locking of the articles to be used, representation of the storage position and movement of the storage position, projection of the articles according to the principle of first in first out, principle of projection fromnear to far, recommendation of the articles to be taken out, accurate indication of the position of the articles to be taken out, scanning of the two-dimensional code of the articles and retrieval ofthe articles. The invention has the advantages of effectively improving the utilization rate of the household storage space, improving the fine management of the use information of the stored articles, and improving the household storage management efficiency.

The invention relates to a BIM construction management platform-based tunnel equipment management and expense calculation method. The method includes the following steps that: the relevant information of tunnel equipment is collected, the expense categories and expense items of the equipment are settled, customized development is carried out on a BIM construction management platform; the relevant information of the tunnel equipment is inputted, screening is carried out according to the sources of the equipment, and a corresponding equipment report is outputted; expenses generated by each kind of equipment at the current month are inputted according to the expense items of different tunnel equipment, and the stand-alone use expense reports of corresponding equipment are outputted; and based on stand-alone use expenses, the total use expenses of all the equipment of a project are calculated, and total equipment use expense reports of corresponding equipment are outputted. With the method of the invention adopted, when the information of the tunnel equipment is updated or changed, equipment information in the BIM construction management platform will be updated simultaneously through manual intervention, and a scientific and reasonable decision-making basis can be provided for the management of the tunnel equipment of the project. The method of the invention has the advantages of high speed and high accuracy.

The invention discloses a comprehensive energy real-time optimization operation and maintenance management system and method for an enterprise energy station. The method comprises the steps that a data perception module obtains energy station related operation data and equipment state information from different sources, and when point-oriented alarm data is generated, the point-oriented alarm data is recognized by a model library module, and equipment-oriented real-time alarm data is generated; and a diagnosis optimization module reads equipment parameter information and preset fault rule base information, then carries out fault early warning analysis and equipment health diagnosis, and sends equipment optimization operation suggestions and equipment operation and maintenance guidance suggestions. According to the invention, a traditional energy station operation and maintenance mode is changed through data perception, analog-to-digital fusion and diagnosis optimization, the operation and maintenance of the energy station is changed from a passive management mode of regular inspection to a pre-check mode of real-time analysis of field operation data and intelligent driving of operation and maintenance work, fine management of daily operation and maintenance business of enterprise energy stations can be significantly enhanced, and the working efficiency of operation and maintenance personnel is effectively improved.

The invention relates to a method for evaluating the integration maturity of a satellite system. The evaluation method comprises the following steps: step 1, constructing an evaluation index system; 2, determining the weights of the subsystems and the single machines under each subsystem in the evaluation model; 3, determining a maturity evaluation grade and a key element milestone event; 4, determining semantic description of a maturity evaluation level; 5, determining the maturity semantic description of each single machine in each subsystem; 6, converting the determined maturity semantic description of each single machine in each subsystem into a binary semantic form; 7, determining a binary semantic maturity grade of each to-be-evaluated satellite system under a subsystem; and step 8,determining a binary semantic maturity grade of each to-be-evaluated satellite system. The method provided by the invention provides an effective way for the rationality and completeness of all technical elements in the full life cycle of product development, production, use and the like and the measurement of the quality stability under a certain functional performance level.

The invention belongs to the technical field of civil aviation air traffic management, and particularly relates to a 4D track collaborative management method supporting TBO operation. According to the method, a 4D flight path collaborative management architecture supporting TBO operation is constructed, the architecture comprises 4D flight path operation collaboration, 4D flight path information collaboration and 4D flight path system collaboration, and the 4D flight path operation collaboration refers to determining the management authority and the management process of 4D flight path information and generating, modifying or updating a 4D flight path in the whole flight stage of an aircraft; 4D track information collaboration means that the format of 4D track information is formulated, and track management is realized based on the format of 4D track information. The 4D track system collaboration means that the airborne end and the ground control end of the aircraft are respectively provided with equipment for managing 4D tracks. The method can effectively improve the understanding of TBO operation, improves the fine management of flights, and provides an effective method for the development planning and coordinated development of a future air traffic control system.

The invention provides an automatic greenhouse aquaculture system based on edge computing internet of things. The system comprises a data collection module, a central processing unit and a remote platform; the data collection module is used for collecting state information of various equipment in the aquaculture greenhouse, and sending the information to the central processing unit; the central processing unit is used for receiving the state information of the data collection module, and accomplishing the monitoring and control on the equipment after performing the comparison, analysis and processing; the remote platform system is used for comprehensively displaying various state information in the aquaculture greenhouse in real time, and can be used for remotely controlling the aquaculture greenhouse. The automatic greenhouse aquaculture system based on edge computing internet of things disclosed by the invention is an intelligent and informatized system; the automatic control, remotemonitoring, anti-theft alarm, and emergency processing on the aquaculture greenhouse can be realized, and the intelligent level and automatic level of the aquaculture are improved.

The invention relates to an automobile disassembling assembly line which comprises a ground conveying plate chain, a suspension conveying chain, a pretreatment station, a door plate disassembling station, an instrument electrical disassembling station, a glass and seat interior disassembling station, a chassis disassembling station, an engine and wiring harness disassembling station, an empty shell briquetting station and a PLC control system. The invention further relates to an automobile disassembling process. The automobile disassembling assembly line is high in automatic conveying capacity, reasonable in station sequence configuration and high in professional integration of disassembling equipment, classification and fine management of disassembling are improved, profits of recycling and regeneration of disassembled parts are maximized, environmental pollution in the disassembling process is reduced, and productivity and disassembling efficiency are improved.

The invention provides a method and a device for developing and managing house purchase customers, a terminal and a computer readable storage medium, relates to the field of communication, and solvesthe problems of rough online popularization and low conversion rate in the prior art. The invention provides a method for developing and managing house purchase customers, which comprises the following steps of: obtaining code scanning information of business cards of customer opposition consultants, and binding the customers with the opposition consultants according to the code scanning information; and pushing building information and a registration invitation to the client according to the code scanning information, and if the client responds to the registration invitation, recording a browsing track and a subscription process of the client for the building. By means of the method, a property consultant can clearly know the browsing track and subscription process of the client, the client can be conveniently managed and tracked in time, and the fine management of the client and the conversion rate of the client are improved.

The invention discloses a method for judging the coal feeding amount of a unit under a variable load based on a power plant SIS. The recommended value of the real-time coal feeding amount under the current load is predicted by conducting statistics on historical values of the coal feeding amount of a previous section of the power plant variable load and the unit load through an SIS platform, a calculating method for the real-time coal feeding amount of the unit under the variable unit is given in the situation that the heat value of coal as fired is hard to determine, the data support is provided for optimization of the variable load state and stable operation of a power plant, and the fuel fine management level of the power plant is improved.

The invention discloses a low polar distance energy-saving manufacturing method for an aluminum cell, which meets the requirement of energy balance by adjustment of technical parameters on the basis of the prior art, comprising the steps that: firstly, voltage adjustment, namely the set voltage of the electrolytic cells is adjusted to be 4.1 volts in the first two weeks, adjusted from 4.1 volts to4.05 volts in the third week, adjusted from 4.05 volts to 4.0 volts in the fourth week and adjusted from 4.0 volts to 3.99 volts in the fifth week; secondly, adjustment of the aluminum level and theelectrolyte level, namely cryolites or electrolyte blocks are added for improving 1 to 2 centimeters of the electrolyte height and the aluminum level is improved 1 to 2 centimeters or so by use of three to five weeks; thirdly, improvement of the molecule ratio and reduction of the superheat degree, namely the molecule ratio is improved from the prior 2.2 to 2.3 to 2.35 to 2.45 within three to fiveweeks by adoption of the method for reducing the addition amount of aluminum fluorides. The improvement of the primary crystal temperature and the reduction of the superheat degree play an importantrole in stabilizing electrolyte production, play a certain role in formation of a hearthside and a furnace cavity, and enable the hearthside and the furnace cavity to enter the state of normal production in advance.

The invention discloses a method for automatically extracting reinforcing steel bar processing information based on digital image processing, and relates to the technical field of image processing. The method comprises the following steps: inputting a reinforcing steel bar sample drawing, and preprocessing to obtain a reinforcing steel bar shape image and a digital annotation image; constructing an ordered set represented by feature points through the steel bar shape image; sequentially selecting three adjacent points to construct a vector by using the ordered set, and obtaining a vector included angle set; after processing operation, obtaining a second vector included angle set; based on the digital annotation image, constructing a mapping relation between line segments and digital areas; determining the feature points of the ordered set are selected in sequence, corresponding digital areas, recognizing length labeling information of the digital areas, and outputting an ordered length set; and crossing and combining the length set and the second vector included angle set in sequence to obtain a final reinforcement sample image recognition result. According to the invention, high automation of steel bar processing information extraction is realized, the extraction efficiency and precision can be effectively improved, and the labor intensity of workers is reduced.

The invention discloses a chronic wound cross-team management information system based on a shared decision. The system is characterized by comprising a shared decision end, a physician end, a wound nurse end and a patient end; the shared decision end, the physician end, the wound nurse end and the patient end are all provided with communication modules and can be in communication connection withother equipment ends; the wound nurse end comprises a case module, a wound nurse feedback module and a decision module; the physician end comprises a strategy module and a doctor feedback module; thepatient end comprises a main module and a selection module; and the shared decision end comprises a data module and an analysis module. The cross-team shared decision system is a team assistance system taking a patient as a center, optimal scientific evidences are considered by doctors and patients at the same time, value views and preferences of the patient are brought into consideration, a decision is made together, and a treatment scheme is more personalized and accepted.

The invention discloses a search and rescue site division method and device, equipment and a storage medium. The method comprises: obtaining a search and rescue area to be divided, wherein the search and rescue area comprises a plurality of search and rescue targets; obtaining first landform feature information of the search and rescue area before a disaster and second landform feature information of the search and rescue area after the disaster; according to the first landform feature information and the second landform feature information, obtaining the affected range of each search and rescue target in the search and rescue area; and determining a search and rescue site in the search and rescue area according to the disaster range of each search and rescue target. Therefore, by determining the landform feature information and the disaster range of the position of each search and rescue target in the search and rescue area, the search and rescue site can be automatically divided, so that the disaster rescue efficiency is improved, and the fine management of the rescue service is improved.

The invention discloses a manual coal-mine-tunneling ventilation-air-cylinder air outlet control device. The manual coal-mine-tunneling ventilation-air-cylinder air outlet control device comprises a support, a hardness air cylinder and a guiding rail. The hardness air cylinder penetrates through the support, the guiding rail is arranged above the support, hanging cables are connected to the top of the guiding rail, a sleeve is fixed to the top of the support, a sliding block is fixed on the sleeve and matched with the guiding rail, a universal joint is arranged between the top of the hardness air cylinder and the support, a rotating piece of the universal joint extends into the sleeve, a swinging piece of the universal joint is fixed to the top of the hardness air cylinder, a plurality of blades are arranged on an outlet in the hardness air cylinder and form a circular-truncated-cone-type structure, the small end of the circular-truncated-cone-type structure is close to the hardness air cylinder, a blade opening-and-closing mechanism is arranged on the hardness air cylinder, and a turning adjusting rod is fixed to the bottom of the hardness air cylinder. The manual coal-mine-tunneling ventilation-air-cylinder air outlet control device is convenient to install and use and high in safe reliability, the problems that as the local ventilator power is continuously improved, and the diameter of the air cylinder is increased, circulation air is caused, the local air speed of a working area is super high, and the working condition is poor are solved, and an air-flowing field in a roadway can be reasonably controlled.

The invention provides an automatic routing method and system based on a two-layer multi-service path. The method comprises steps of querying an uplink device associated with an access device based on a two-layer topological relation according to the parameter information of the device; circularly inquiring the uplink device corresponding to the uplink device till a termination device meeting a preset condition is inquired or the maximum hop count is exceeded; and if the termination device meeting the preset condition is queried, obtaining path information from the access device to the termination device according to the access device, the corresponding uplink device and the path information to the termination device. According to the method, the business path meeting the requirement can be automatically selected, manual operation steps of operators are reduced, labor cost is greatly reduced, convenience is provided for the operators, meanwhile, some errors caused by manual operation are avoided, effective technical support is provided for service opening and maintenance of metropolitan area network Internet private lines and the like, and fine management of operator networks is improved.

The invention provides a radar discharging induction monitoring device of power transmission and distribution lines. The device comprises a wire-clamping structure and a circuit board arranged in thewire-clamping structure, the wire-clamping structure comprises a housing and an electricity-taking portion, a cable channel is formed between the housing and the electricity-taking portion, an electricity-taking coil is arranged in the electricity-taking portion, the bottom of the housing is provided with a wind speed transmitter, the internal part of the housing is provided with the circuit boardand a backup power supply, the circuit board is provided with a controller, a line temperature detection circuit, a temperature and humidity pressure detection circuit, a communication circuit and asatellite positioning circuit, and the controller is separately connected to the line temperature detection circuit, the temperature and humidity pressure detection circuit, the communication circuit,the satellite positioning circuit, an electric field induction probe, the electricity-taking coil, the wind speed transmitter and an external cloud platform in a signal manner and is electrically connected with the backup power supply. According to the radar discharging induction monitoring device of the power transmission and distribution lines, meteorological change information in a micro-environment along the lines and operation state information of the power grid lines can be monitored in real time, and lightning flashover early warning and accident positioning are provided.

The invention discloses a PLC-type intelligent control device for the air flow field of a coal mine comprehensive excavation face, which includes a linear displacement mechanism, an air outlet air cylinder, a rotating mechanism, an opening and closing mechanism and a PLC control box. The air outlet air cylinder is arranged under the linear displacement mechanism. The rotating mechanism is installed between the linear displacement mechanism and the air outlet cylinder. The air outlet cylinder includes the air cylinder outlet and the air cylinder frame. The rear end of the air cylinder air outlet is connected to the front end of the air cylinder frame. On the outside, the PLC control box is externally connected; the air outlet of the air duct includes a plurality of outer blades and a plurality of inner blades, the rear ends of the outer blades and inner blades are hinged with the front end of the fan frame, and the front ends of the outer blades and inner blades pass through the first The elastic ropes are connected in series, and the rear ends of the outer blades and the inner blades are connected in series through the second elastic ropes. The invention solves the problems of continuously increasing the power of the local fan and enlarging the diameter of the air cylinder, which may easily cause circulating air, excessive local wind speed in the working area, and deterioration of working conditions, and can reasonably control the wind flow field in the roadway.