57results about How to "Reduce the loss of manpower and material resources" patented technology

The invention provides a fault location method, device and system for distribution lines. The method includes: using distribution line fault location devices FLD mounted on the distribution lines to collect fault recording data; locating the faulted lines from the distribution lines according to the fault recording data. By the fault location method, the problems that fault points need to be located by power staff section by section and line by line, and a large amount of manpower, resources and time needs to be consumed in the prior art are solved, fast location of the faulted lines is achieved, and manpower and resource loss is reduced.

The invention discloses a fire monitoring alarm system based on internet of things. The system comprises a server and a plurality of monitoring devices connected with the server, wherein each monitoring device comprises a central processing unit (CPU), a wireless transmission module, a sensor and a sound-light alarm module; the sensor is used for detecting temperature, smog and harmful gas information of a 380V power input wire and transmitting the information to the CPU; the CPU is used for judging the received information and transmitting the judgment result to the server through the wireless transmission module; and if the received information contains alarm information, the alarm module transmits alarm information. By installing the monitoring alarm system, the quality and the efficiency of maintenance and management can be improved, and the aim of comprehensive monitoring is fulfilled; and the system has the characteristics of stable performance, low manufacturing cost, convenience in operation and the like.

The invention discloses a power grid risk prevention and control system based on a cascading failure sequence. The power grid risk prevention and control system comprises a comprehensive importance unit, an accident severity unit and an accident risk assessment unit. The comprehensive importance unit is used for establishing the comprehensive importance factor of each element according to the structure importance factors and the state sensitivity factors of the elements in a power grid; the accident severity unit is used for carrying out processing according to the comprehensive importance factor, obtained by the comprehensive importance unit, of each element, the severity factor of the power grid running state and the severity factors of the load loss and then obtaining the comprehensive severity factor after a power grid accident. The accident risk assessment unit is used for conducting calculating according to the comprehensive severity factor to obtain the accident risk assessment factor. The power grid risk prevention and control system can completely represent the importance of different elements in the power grid and is close to the power grid practice, a risk assessment result is more reliable and more accurate, and therefore the extra manpower and material resource loss is reduced.

The invention discloses a quick-release beam bottom template supporting frame. The quick-release beam bottom template supporting frame comprises steel pipe vertical rods, a steel pipe horizontal transverse rod, a U-shaped jack, a wood beam edge, a top template, a cushion block, a first connecting buckle and a second connecting buckle; the lower ends of the two steel pipe vertical rods are fixed to the cushion block; the upper ends of the two steel pipe vertical rods are connected with the U-shaped jack in an inserted mode; the wood beam edge is arranged on the U-shaped jack, and the top template is arranged on the wood beam edge. The invention further discloses a working method of the quick-release beam bottom template supporting frame. The beam bearing span and the corresponding structural force are effectively decreased, and the full supporting frame body and the corresponding template can be disassembled in advance; the frame body turnover efficiency is improved, material input is reduced, and the time limit for a project is shortened; the quick-release beam bottom template supporting frame can be applied to template supporting systems of the majority of concrete structural engineering.

The invention relates to an equipment state evaluation method and system and a storage medium, and the method comprises the steps: a monitoring terminal monitors the state quantity of power distribution network equipment, and transmits the monitoring data to a communication base station; the communication base station transmits the monitoring data to a monitoring layer; the monitoring layer records a time label corresponding to the monitoring data and reads off-line data corresponding to the time label in an off-line test database; the monitoring layer calculates a performance index of the monitoring terminal according to the offline data and the monitoring data, determines the state of the monitoring terminal according to the performance index, and realizes self-checking of the performance of the monitoring terminal; the state of the monitoring terminal is evaluated through self-checking, an effective basis is provided for evaluation of the power distribution network monitoring terminal, and the problem of monitoring distortion caused by unqualified performance or self-degradation of the monitoring terminal at present is solved.

The invention discloses an insulator evaluation and classification method and device based on infrared images. The method comprises the steps of acquiring an insulator infrared spectrum sample library; cutting the obtained images of the insulator infrared spectrum sample library to obtain a normal insulator library as a positive sample and a deteriorated insulator library as a negative sample; graying the images in the positive sample and the negative sample; processing the image after graying processing by using a principal component analysis method; and training the image processed by the principal component analysis method and the characteristics of the insulator state by adopting a Bayesian algorithm to obtain a corresponding relationship between characteristic parameters and the insulator state and model prediction parameters, thereby realizing classification and identification of the insulator. According to the technical scheme of the invention, the method can adapt to a complexfield environment, achieves the automatic recognition and diagnosis of the insulator in the infrared image, effectively reduces the false detection, and improves the efficiency and accuracy.

The invention discloses a reasonable and efficient planting method for wheat stubble sesame. The planting method guarantees the full stand of rush planting of sesame after wheat harvesting when the soil is damp, is simple and efficient, saves labor and time, is beneficial for later-period sesame growth and development, yield formation and field management and solves the problems that the conflict between rush harvesting and rush planting exists all the time and because high wheat stubble is left in land after wheat harvesting, next-stubble crops can not be cultivated easily. According to the concrete scheme, the wheat stubble is kept at the original position after wheat harvesting, damage to the granular structure of the land and loss of the soil moisture content due to high-intensity mechanized cultivation are reduced, wheat straw is cleared out, and grain husks are left in the land; a rotary cultivator carries out rotary cultivation and soil aeration between wheat stubble lines; base fertilizer is sufficiently applied in the fertilization mode of combining quick-acting fertilizer and controlled-release fertilizer, sesame seeds are sown in line, the seeds to be sown are treated with insecticide like carbendazim, and a herbicide is sprayed after sowing to close weeds. Inter-cultivation is not needed in the whole cultivation process, so that labor is saved, the sesame yield and the fertilizer utilization ratio are increased, and the planting method is worthy of application and popularization.

The invention provides a rake-toothed biomass material conveying device. The rake-toothed biomass material conveying device comprises a first traction chain, a second traction chain, rake teeth, a driving shaft, a transmission shaft, an intermediate separator, a lower bottom plate, a feed opening and a spiral tensioning device; the driving shaft and the transmission shaft are arranged symmetrically; the spiral tensioning device is connected with the driving shaft to control the tensioning force of the first traction chain and/or the second traction chain; the first traction chain is respectively meshed with the driving shaft and the transmission shaft; the second traction chain and the first traction chain are arranged symmetrically, and the second traction chain is respectively meshed with the driving shaft and the transmission shaft, so that the driving shaft is enabled to drive the first traction chain and the second traction chain to carry out chain-type transmission around the transmission shaft. With the rake-toothed biomass material conveying device, the problems of large floor space, large labor consumption and large material consumption in the construction of a belt conveyer are solved, and the problems of poor conveying performance and low efficiency of the belt conveyer are also solved.

The invention discloses a water-stop sealing gasket capable of being melted and injected with glue for multiple times, a duct piece, a duct piece ring and a construction method. The sealing gasket capable of being injected with glue comprises a rubber main body, wherein a glue injection hole channel is formed in the rubber main body, a hot melting coil is arranged in the glue injection hole channel, reserved hole channels capable of ensuring that the rubber main body is compressible are reserved in the two sides of the glue injection hole channel, and an expansion water absorption layer is arranged on an outer ring of the rubber main body; and the rubber main body is also provided with a glue outlet hole communicated with the glue injection hole channel. The water-stop sealing gasket capable of being injected with glue is arranged on an inner layer of an annular and longitudinal joint surface of a segment, and a common sealing gasket is normally arranged on an outer layer of the jointsurface. After a segment tunnel operates, if water leakage occurs due to the fact that the water stopping performance of the outer-layer sealing gasket is reduced, an inner-layer sealing gasket glue injection and water stopping program is started. High-temperature water stop glue is injected into a sealing gasket channel and seeps outwards along the glue outlet hole, and when the temperature is reduced to 45 DEG C or below, the liquid glue becomes solid rubber, and the water stop effect is achieved.

The invention discloses a switch cabinet closing lockout circuit. The circuit comprises a handcart working position auxiliary contact normally-closed junction S9, a handcart testing position auxiliarycontact normally-closed junction S8, a closing lockout electromagnet Y1, a closing lockout electromagnet auxiliary contact normally-closed junction S2 and a closing release Y3, wherein the handcart working position auxiliary contact normally-closed junction S9 is connected with the handcart testing position auxiliary contact normally-closed junction S8 in series and then is connected with the closing lockout electromagnet Y1 through a rectifying element V1, the closing lockout electromagnet Y1 controls opening and closing of the closing lockout electromagnet auxiliary contact normally-closedjunction S2, and the closing lockout electromagnet auxiliary contact normally-closed junction S2 is connected with the closing release Y3 in series. A normally-closed junction of a Y1 relay is connected with a closing circuit in series; in the handcart hand-cranking process, the relay is electrified, and the closing circuit is switched off; and when the handcart is at a working position or a testing position, the relay is not electrified, and the circuit is switched on.

The invention belongs to the technical field of graphene foam boards, and particularly relates to a large-size graphene foam board. The large-size graphene foam board comprises foam board bodies, andevery two adjacent foam board bodies are connected through a connecting part; each connecting part comprises clamping plates, two push plates which are arranged up and down are arranged between everytwo adjacent clamping plates, and a spring is fixedly connected between the two push plates; first sealing grooves and first inserting grooves are formed in the upper and lower ends of each clamping plate on the left side; a first sealing plate is connected into each first sealing groove in a sliding manner; second sealing grooves and second inserting grooves are formed in the upper and lower endsof each clamping plate on the right side; a second sealing plate is connected into the second sealing groove in a sliding manner; and the large-size graphene foam board has the characteristics that transportation is convenient, loading and unloading are fast, time and labor are saved, resources are effectively saved in the transportation process, the fixing strength between the foam boards is effectively improved, the transportation safety is high, and the foam boards have the characteristics of being low in mass, high in strength and the like.

The invention relates to a production process of a weft-knitted wool-like fabric, which is characterized by comprising the following steps of: selection of the fabric, selection of the model, weavingprocess and post-processing; wherein the fabric is made of 20D-100D polyester DTY, 20D-40D superfine polyester fiber DTY and 20-D-70D spandex, and the 40D-100D polyester DTY is used to make veils, and 20D-40D superfine polyester fiber DTY is used for the bottom yarn and a 20-D-70D spandex for the lining yarn; The machine adopts 28-36-pin 34-inch 104-way open-width large circular machine for weaving; the needle-arranging mode adopts two needle, one circulation and one triangle arrangement, four-way per cycle weaving process ; The advantages are as follows:the production processing flow is short, the human and material consumption is small, the color fastness of the fabric after the pile is started is easy to control, and the quality is guaranteed.

The invention discloses a multi-lane automatic unloading control device and control method for a large crusher. The control device comprises the crusher and an automatic control system, wherein a material pouring opening is formed in the upper portion of the crusher, and a discharging opening is formed in the lower portion of the crusher; a plurality of lanes connected with the material pouring opening are arranged at the material pouring opening. The discharging opening is connected with a conveying device; the automatic control system comprises a controller and a detector; the controller is electrically connected with the detector; the detector comprises a material level detection module used for detecting the material level and a vehicle detection module used for recognizing vehicles; the material level detection module is installed at the top of the inner side of the crusher; the vehicle detection module is installed on one side of the lanes; and a prompt module used for indicating vehicle unloading is arranged on one side of the lanes and electrically connected with the controller. According to the control device, the unloading fairness is improved, the problems that due to manual dispatching, vehicle unloading is disordered, and material flow is not stable are avoided, and a guarantee is provided for subsequent long-distance conveying belt safe operation; and meanwhile, the production cost is reduced to a great degree, and the production efficiency is improved.

The invention provides a device and a method for actively promoting landslide collapse. The method comprises the steps that a loosening agent is sprayed to a to-be-slide mass to loosen the soil texture of the mass, hinges provided with self-expansion bag bodies are placed at the positions of slide blocking keys, and extensible double-layer floral tubes are arranged in the horizontal direction of alandslide belt; each bag body is of a double-layer structure, wherein an expanding agent or gas is placed in the inner layer, and the outer layer is filled with lubricating substances; and repeated expansion is conducted, so that a gap is generated between the to-be-landslide mass and a landslide bed, the pressure in the bag bodies is increased, and the lubricating substances enter the landslidebelt. Meanwhile, magnetic fluid mixed with the lubricating substances is arranged at the position of a backup pull fracture belt, the magnetic fluid is guided in a graded mode to be fully distributedon the landslide belt, and the landslide mass is promoted to slide away from the landslide bed through the combined effect. The problems that manpower and material resources are wasted, and normal operation of traffic transportation and construction operation is affected due to long-term monitoring of the to-be-landslide mass are solved. The device and the method have the advantages that feasibility is high, manpower and material resources are saved, and personnel injuries are reduced.

The invention relates to a heat dissipation system and engineering mechanical equipment. The heat dissipation system involves a controller, a heat dissipation device, an air driving piece and a powerdevice, wherein the air driving piece is oppositely arranged on one side of the heat dissipation device; and the power device is in driving connection with the air driving piece, the power device is further electrically connected with the controller, and the power device is used for driving the air driving piece to be switched between forward rotation and reverse rotation. When dust is accumulatedto a certain thickness, the heat dissipation capability of the heat dissipation device is certainly influenced, at the moment, the controller can drive the power device to be switched to reverse rotation, that is, the air driving piece can be driven to reversely rotate, and the air driving piece is changed from blowing air to the heat dissipation device to sucking the air so that the covering dust can be separated from the surface of the heat dissipation device under the attraction action of the air, and the cleaning purpose is achieved; and manpower and material resource losses can be reduced, enterprise cost expenditure is reduced, meanwhile, continuous work of the engineering mechanical equipment can be guaranteed, and the work efficiency is further improved.