64results about How to "Reasonable maintenance" patented technology

A distribution network automation system comprises a power distribution main station, power distribution substations and power distribution terminals. The power distribution main station is responsible for monitoring and managing global information and used for monitoring and acquiring data of a whole distribution network to complete fault handling within the whole network; the power distribution substations are used for managing distribution station terminal monitoring equipment such as switchgear cubicles for loop networks, switching stations for distribution networks and the like, acquiring, gathering and uploading signals of the power distribution terminals to the power distribution main station, and transmitting orders of the power distribution main station to the power distribution terminals; the power distribution terminals mainly used for acquiring data of primary equipment, controlling switchgears, detecting and recognizing faults and sending fault information to the power distribution substations and the power distribution main station. The distribution network automation system has the advantages that power supply reliability can be greatly improved, fault time can be greatly shortened, voltage quality can be greatly improved to provide optimal voltage for users, and labor intensity can be relieved for operators; management level of the whole power distribution system can be improved, working efficiency is improved, and user service level is improved.

The invention discloses an expert system for estimating and controlling mining damage under special railroad switch cluster, comprising a real- time estimating system of ground surface sinkage on underground mining condition, a real-time estimating system of sinkage deformation of special railroads and stations in mine in mining period, an intelligent estimating and control expert system of sinkage deformation of special railroads in mine, and a safety transportation protection technique against sinkage of special railroads and station switch cluster. And the invention establishes an expert system for estimating and controlling the sinkage of special railroads and station switch cluster in mine in the mining period, revealing characters and dynamic variation law of sinkage deformation of the railroads, thus advancing reasonable railroad maintaining measures, especially a control technique of deformation of railroads and station switch cluster. And the invention is simple and convenient to operate, and has a clear flow, and can make dynamic and steady estimation on mining damage under railroad and station switch cluster, and the estimated result has high accuracy. And the invention can raise total social and economic benefits of thick ledge mining under special railroads in mine.

The invention provides a resource sharing system and a resource sharing method. The resource sharing system comprises a resource obtaining unit and a resource sharing unit. The resource obtaining unit obtains resources of all service systems and identifies the obtained resources according to resource sources and type information. The resource sharing unit determines use limitation of a log-in user to the resources according to the identity identification of the log-in user and/or resource identifications. The invention provides a resource sharing platform which can reasonably and effectively maintain and manage the resources, matching and rich resources are provided for resource users without limitation of the service systems, and resources of the service systems in areas are balanced.

The invention discloses an unmanned vehicle early warning method and device and an unmanned vehicle. The method includes the steps that an early warning type is determined according to operation parameters of the unmanned vehicle; an early warning mark is determined according to the early warning type; and the early warning mark is projected to the target projection position corresponding to the early warning type. By the adoption of the embodiment, whether a fault happens or not and the corresponding early warning type can be determined according to the operation parameters of the unmanned vehicle, then the warning mark is projected according to the early warning type, other vehicles can know which state the unmanned vehicle is in through the projected warning mark in time so as to conduct reasonable avoidance, rescue and maintenance, and the safety of the unmanned vehicle and other vehicles is improved.

The invention discloses a ladle lining casting technology, which comprises the following steps: 1) detaching ladle slag brick, cleaning slag on the ladle wall working layer, reacting layer and deteriorated layer, 2) placing the mould to locate, 3) casting between mould and ladle wall with the same material as working layer, 4) stripping after health preserving, 5) toasting.

The invention relates to the technical field of control and application of new energy sources, and in particular relates to a discontinuous power supply, a battery management system and a discontinuous power supply system, wherein the discontinuous power supply system comprises a battery pack, a discontinuous power supply and a battery management system which are correspondingly connected. Compared with the prior art, the discontinuous power supply, the battery management system and the discontinuous power supply system have the advantages that through the communication between the discontinuous power supply and the battery management system, the use of a switch tube in the battery management system is cancelled; the detected running parameter of the battery pack is sent to the discontinuous power supply through uploading data by the battery management system and then the charge/discharge parameter of the battery pack is adjusted by the discontinuous power supply; the connection between the battery pack and the discontinuous power supply is not needed to be cut off so that the possibility of sudden power failure caused by the cut-off of the switch tube on a main circuit of the battery management system is greatly reduced; and the response speed is high and no back load power failure is caused, so that the reliability and the efficiency of the whole system are simultaneously improved.

A special lubricating liquid for rolling copper and copper alloy is prepared from 32# universal engine oil, 7# universal engine oil, petroleum sulfosodium, emulsifier and white oil. The deionized water is added some time according to rolling condition. The process for preparing the lubricating liquid includes mixing, agitating or diluting and heating in circulation node with heating temp of 30-50 deg.C.

The present invention provides a box-shaped vehicle control device provided under the floor or on the roof of a vehicle to supply electric power to equipment of the vehicle. The vehicle control device is made up of function modules (4) each having an interface surface (22) on one side where a first interface region (5) in which a signal-wire terminal is placed and a second interface region (6) in which an electric-power-wire terminal is placed are separated. The interface surfaces (22) are placed on one end side with the first interface region (5) as a common region and on the other end side with the second interface region (6) as a common region. The function modules have monitor circuits, overvoltage prevention circuits, and inverters.

The invention relates to the technical field of extrusion injection molding machines, to solve the problem of low production efficiency of an injection molding machine in the prior art. In particular, the invention relates to an extrusion feeding mechanism, comprising a pushing assembly, a sliding assembly and an extrusion assembly, wherein the pushing assembly drives the extrusion assembly for straight reciprocating motions through the sliding assembly; the pushing assembly comprises a first support frame, a first oil cylinder mounted on the first support frame, and a connecting plate capable of doing straight reciprocating motions under the push of the first oil cylinder; a channel for the first support frame to pass is arranged on the connecting plate; the sliding assembly comprises a substrate and a sliding member; the first support frame passes through the connecting plate to be fixedly connected to the substrate. The invention also specifically relates to an extrusion injection molding machine, comprising the extrusion feeding mechanism, wherein two extrusion feeding mechanisms are arranged, each of which is disposed on each of two sides of an injection mold, and respectively correspond to a first injection molding port and a second injection molding port. The production efficiency of the current injection molding machine can be accelerated, and production costs can be saved.

The invention discloses an engine intelligent cleaning and maintenance system, which includes a cleaning pipeline connected with the engine, and the cleaning pipeline is connected with the inside of the engine, wherein the cleaning pipeline is provided with: a high-density used oil filter element for filtering impurities , and an oil pump that can drive the flow of oil in the cleaning pipeline; the cleaning pipeline is connected with an air intake port that can increase the air pressure; an intelligent engine cleaning and maintenance system is also equipped with a dielectric constant detector that can detect the quality of used oil. The invention also discloses a dynamic cleaning method and a static cleaning method using the above-mentioned system for cleaning. The invention can effectively clean the inside of the engine, remove 99% of old engine oil, and prevent new lubricating oil from being polluted by old oil. Simultaneously, the operation is simple, the intelligence is high, and manpower is saved.

The invention discloses a rule maintenance method for blockchain. The rule maintenance method comprises the following steps: acquiring a nominating node of an arbitration round value seat; performingvoting on all nominated nodes, determining formal nodes of an arbitration round value seat according to a preset voting rule, wherein the number of the formal nodes is an odd number, and the formal nodes specifically comprise an original node and a plurality of nominated nodes selected through voting; and the formal node of the arbitration round value seat maintains and manages the rule of the blockchain according to a preset time period. The invention further discloses a rule maintenance system for the blockchain. The rule maintenance system comprises an acquisition unit, a voting unit and arule maintenance unit. By adopting the method and the device, the effects of low resource consumption, short consensus achievement time and high performance efficiency can be ensured, and meanwhile, the blockchain can be maintained fairly and reasonably.

The invention belongs to the field of image processing, and particularly relates to an evolution analysis method of an ash deposition state image of an air pre-heater rotor. The method comprises the following steps: after acquiring an infrared image of the air pre-heater rotor, transmitting the infrared image to an image processing module by an infrared thermal imager; carrying out image preprocessing after receiving the image, and converting the preprocessed infrared image into a gray scale curve image; enhancing the grayscale curve image to highlight a target area; establishing a gray-levelco-occurrence matrix according to the enhanced gray-level curve image; analyzing gray level co-occurrence matrix related statistics, and extracting texture feature parameters; establishing a deep belief network analysis model and carrying out training and testing; enabling the trained model to analyze the ash deposition state of the rotor of the air pre-heater according to the texture feature parameters; effectively detecting and monitoring the soot formation degree, and analyzing images to obtain the specific soot formation state. According to the invention, the blockage possibility of the air preheater can be predicted in advance, an operator is guided to optimally operate a soot blowing system, and therefore the working efficiency of the air preheater in the normal operation period is improved.

The invention relates to the technical field of cleaning of photovoltaic assemblies, and particularly discloses a photovoltaic plate surface cleaning device. The photovoltaic plate surface cleaning device comprises photovoltaic plate strings which are linearly arranged and installed, and is characterized in that a travelling device is transversely erected on the one or plurality of adjacent photovoltaic plate strings, and is sequentially provided with a front sweeping device, a scraping sweeping device and a sweep-back device from front to rear, wherein the front sweeping device, the scrapingsweeping device and the sweep-back device transversely cover the surfaces of the photovoltaic plate strings; an air blowing system and an automatic control system are installed on the travelling device; the air blowing system is connected with the front sweeping device, the sweep-back device and an auxiliary purging system; and the automatic control system is connected with the travelling device,the front sweeping device, the scraping sweeping device, the sweep-back device and the air blowing system. The photovoltaic plate surface cleaning device is reasonable in structure, stable in operation, efficient in sweeping, and is used for reasonably maintaining a photovoltaic power generating station and improving the power generating efficiency.

The invention provides a management system for debugging elevator multistage authority, and the system comprises an elevator control terminal, a debugging maintainer user terminal and a background management terminal; the background management terminal comprises a company level management module, an elevator field management module, a personnel identity management module and a function authority management module; the company level management module is used for carrying out management priority setting on multi-level companies and assigning corresponding company function authorities; the elevator field management module is used for setting companies to which elevator control ends belong and assigning corresponding elevator function authorities; the the personnel identity management module is used for respectively carrying out personnel identity setting on the multi-level companies and assigning corresponding personnel function authorities to corresponding personnel; and the function authority management module is used for setting function authorities of companies, personnel and/or elevators. Multi-dimensional, multi-level and high-flexibility company management, personnel management, elevator field management and function authority management are unified, and seamless management is effectively carried out on companies, personnel, elevators and function authorities.