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122results about How to "Save money" patented technology

Temporary fixed bearing of a cable-stayed bridge

ActiveCN224494853Usave human effortsave money
The application relates to a temporary consolidation support of a cable-stayed bridge, which comprises a main body, two spaced main steel plates and a concrete pouring body; the concrete pouring body comprises reinforcing members and poured concrete, and the two ends of the reinforcing members are connected with the main steel plates respectively; the edges of the main steel plates extend to the outside of the concrete pouring body to form wing parts, and first through holes are arranged on the wing parts; an auxiliary connecting member comprises an auxiliary steel plate and a pre-buried rod; second through holes are arranged on the auxiliary steel plate, the auxiliary steel plate is connected with the pre-buried rod, and a threaded sleeve is connected to the side of the auxiliary steel plate which faces the pre-buried rod; the two ends of the main body are respectively provided with the auxiliary connecting members; and connecting bolts are screwed into the threaded sleeves after passing through the first through holes and the second through holes. The application makes the dismounting process of the temporary consolidation support simple and convenient, and reduces the manpower, material resources, financial resources and time required for dismounting the temporary consolidation support.
Owner:CHINA RAILWAY FIFTH GROUP SECOND ENGINEERING CO LTD +1

1af metering tank gas regulator adjustment device and method

The present application relates to the technical field of spent fuel reprocessing, in particular to a 1AF metering tank gas damper adjusting device and method, the 1AF metering tank gas damper adjusting device comprising a fixed rack and a plurality of stirring mechanisms, the fixed rack being arranged directly above the 1AF metering tank, and the stirring mechanisms being movably arranged on one side of the fixed rack close to the 1AF metering tank. Through the adjustment of the fixed rack and the stirring mechanisms, the horizontal position and the vertical position of the stirring mechanisms can be quickly adjusted, and then the stirring effect of the gas damper in the 1AF metering tank with different number and arrangement position of the gas damper can be tested, so that the number and position arrangement of the gas damper in the 1AF metering tank can be confirmed and fixed, and the type, number and position arrangement of the stirring device in the 1AF metering tank with 1:1 scale of the commercial spent fuel reprocessing plant for the accurate metering of the 1AF liquid volume are provided with reference, the traditional fixed welding method is avoided, and the manpower, material resources and financial resources for the 1AF metering tank gas damper adjustment test are saved.
Owner:THE 404 COMPANY LIMITED CHINA NAT NUCLEAR

Support pile supporting device and construction method

This invention relates to the technical field of deep foundation pit construction, and in particular to a support pile support device and construction method. The device includes several connecting bolts, several expansion bolts, four pins, a fixing device, a soil layer, a support pile, and two tensile anchor cables. Both tensile anchor cables are fixedly connected to the interior of the soil layer. The fixing device includes an anchor bolt connector, two steel struts (first type) and two steel struts (second type). One end of each of the two steel struts (first type) and one end of each of the two steel struts (second type) are detachably connected to the outer surface of the anchor bolt connector. This invention features a detachable fixing device that connects the tensile anchor cables and the support pile, ensuring the stability of the support pile and replacing the function of a horizontal wainscoting. Furthermore, after use, this device can be disassembled and reused, saving money, reducing the expenditure on forging multiple horizontal wainscotings, avoiding waste of shaped steel materials, and eliminating the single-use limitation of horizontal wainscotings.
Owner:THE SECOND CONSTR OF CHINA CONSTR EIGHTH ENG DIV

Sensor fault detection method based on support action change

PendingCN121804562AAvoid misjudgments and omissionsSynchronous monitoring and real-time responseIncline measurementComplex mathematical operationsMulti source dataCoal
The invention relates to the technical field of coal mine bracket sensor detection, in particular to a sensor fault detection method based on bracket action change, which comprises the following steps: collecting data through a multi-source data fusion monitoring architecture, and filtering non-fault abnormal data through a Bayesian network; constructing a mapping model of bracket action and dip angle change, and defining monitoring logic; an inclination angle value is accurately predicted in combination with a Kalman filtering algorithm, the inclination angle value is compared with a real-time observation value, and intelligent early warning is triggered when an error exceeds a preset threshold value; the method realizes accurate and real-time fault detection, avoids missed judgment, greatly shortens the troubleshooting time, reduces the labor cost, improves the safety production guarantee capability of a working face, and is suitable for complex working conditions of an underground coal mine.
Owner:ZHENGZHOU HENGDA INTELLIGENT CONTROL TECHNOLOGY CO LTD

A body b-pillar reinforcement structure for a frameless door

The application discloses a frameless vehicle door body B column reinforcing structure and belongs to the technical field of automobile manufacturing, which comprises a B column inner plate assembly, a B column reinforcing piece and an outer plate reinforcing plate assembly. On the basis of the original B column inner plate assembly, a plurality of Z-direction long holes are arranged on the inner side of the B column inner plate along the body height direction, and the B column reinforcing piece is assembled on the Z-direction long holes. The B column reinforcing piece optimizes the corresponding position intrusion amount of the B column in the collision. The B column inner plate assembly provided with the B column reinforcing piece is welded with the outer plate reinforcing plate assembly, and a closed reinforcing cavity is formed between the B column inner plate assembly and the outer plate reinforcing plate assembly, which can effectively absorb the collision energy and make up for the sharply reduced outer cavity space. The frameless vehicle door body B column reinforcing structure can optimize and correct the corresponding position intrusion amount of the B column in the collision without adjusting the welding tooling, thereby saving the correction period and cost and being beneficial to the lightweight of the new energy vehicle body.
Owner:江苏开沃汽车有限公司

Method and system for expanding water throwing efficiency data of large amphibious aircraft

PendingCN121765369AOptimize flight test arrangementsReduce repeated testingFlight testData expansion
The invention belongs to the technical field of aircraft fire extinguishing design, and provides a large amphibious aircraft water throwing efficiency data expansion method, which comprises the following steps: carrying out a pre-flight test of an aircraft to obtain test state points of aircraft water throwing efficiency, including typical test state points and atypical test state points; carrying out water throwing efficiency tests on different test state points, summarizing and analyzing test data, carrying out water throwing efficiency tests on test state points corresponding to invalid data again, summarizing the test data again, and fitting the test data to obtain different water throwing efficiency relation curves; and typical test state point results are extracted to fit coefficients of the water throwing efficiency relation curve, the coefficients are combed, a change relation curve of the water throwing efficiency and different test state points is constructed, and a change curve of the water throwing efficiency along with the water throwing height under each test state point of the airplane is expanded. According to the method, data validity judgment can be improved, the test process is accelerated, and unpredictability of environment variable control caused by an overlong test period is avoided.
Owner:AVIC GENERAL HUANAN AIRCRAFT IND CO LTD

Split type double-screen cashier terminal fusing payment acceptance

The utility model discloses a split type fusion payment acceptance double-screen cashier terminal, which comprises a host and an independent display, the independent display is connected with the host, the host comprises a host display screen, an application processor and a card acceptance device, the host display screen is used for displaying information and / or interacting with consumers, and the card acceptance device is used for accepting the consumers. The application processor is used for operating a commercial cashier system and / or a payment acceptance system, the card acceptance device is used for accepting a bank card of a consumer and / or interacting with mobile payment equipment of the consumer, and the independent display is used for displaying a software interface of the commercial cashier system and / or the payment acceptance system to a cashier and / or interacting. According to the utility model, functions required by bank card acceptance and functions required by commercial cashier are creatively recombined, so that the total cost of the cashier terminal integrating payment acceptance is greatly reduced, and popularization of the cashier terminal integrating payment acceptance in a larger range is facilitated.
Owner:SHANGHAI SHIMAI INTELLIGENT TECH CO LTD

Novel cantilever platform structure based on lever principle

The utility model discloses a novel cantilever platform structure based on the lever principle. The novel cantilever platform structure comprises a groove type empty box structure and a rod straining beam plate structure. The groove type empty box structure serves as a basic supporting structure of the whole cantilever platform system, the top of the groove type empty box structure is fixedly connected with the rod system beam plate structure, the rod system beam plate structure extends by a certain length on the two sides of the groove type empty box structure, and the lower portion of the inner side end of the rod system beam plate structure is fixedly connected with a ballasting block to form a ballasting structure and a cantilever structure. The outer edge of a lower foundation of the groove type empty box structure serves as a fulcrum of the whole cantilever platform structure, the dead weight and upper loads of the cantilever platform form power torque, the saddle weight and upper loads of the saddle weight form resistance torque, and the outer side of the rod system beam plate structure extends out of the corbel structure to serve as a supporting arm of the cantilever platform structure. According to the utility model, the splicing width of the platform can be flexibly controlled, and a convenient traffic system in which people and vehicles are separated is formed.
Owner:ZHEJIANG DESIGN INST OF WATER CONSERVANCY & HYDROELECTRIC POWER

A raft-type liftable aerator

This utility model discloses a raft-type liftable aerator, relating to the field of aerator technology. The utility model includes plastic floats, elbows, tees, connectors, aeration risers, an aerator body, and steel wire ropes. Two floats are provided, and several elbows are provided, with the two floats connected by the elbows. By using two floats connected by several elbows and then joined by the connector to form a raft, the stability of the aerator body is increased. Four steel wire ropes are used to fix the entire raft, adding two more steel wire ropes than the single float of the original suspended chain aeration system, further reducing the swaying amplitude of the floats on the water surface. By replacing the hose (snake-skin hose) connection between the floats and the aerator body with a connector that connects to the aerator body via the aeration riser (which is a rigid pipe), tangling of the hose (snake-skin hose) is avoided, preventing tangling from affecting the equipment's performance and maintenance.
Owner:RECLAIMED WATER ENVIRONMENTAL TECHNOLOGY (HUBEI) CO LTD

Hydraulic rock drill front guide waterproof structure

The utility model relates to tunnel construction machinery technical field, concretely relates to a kind of hydraulic rock drill front guide waterproof structure, drill tail transmission is connected on the rotary mechanism of hydraulic rock drill, front guide waterproof structure includes the water injection sleeve for being set on the outer periphery of drill tail, holds sleeve, head casing, waterproof cover and buffer pad;The head casing is used to be connected to the rotary mechanism of the hydraulic rock drill, the holding sleeve and the water injection sleeve are installed in the inside of the head casing, the holding sleeve is located between the rotary mechanism of the hydraulic rock drill and the water injection sleeve;The waterproof cover is connected to the head casing, the buffer pad is installed between the end surface of the waterproof cover and the head casing.The utility model's hydraulic rock drill front guide waterproof structure, by the structure cooperation of waterproof cover, buffer pad and head casing, drill tail and waterproof cover can be prevented from relative motion, avoid the problem that gap increases due to abrasion, waterproof effect weakens.
Owner:CHINA RAILWAY CONSTR HEAVY IND

Press pile force locking structure of anchor rod static pressure pile

The utility model discloses an anchor rod static pressure pile pressing force locking structure which comprises an anchor rod static pressure pile and anchor rods pre-buried in a bearing foundation around an anchor rod static pressure pile hole, the anchor rods are symmetrically distributed with the anchor rod static pressure pile hole as the center, and the top of each anchor rod is sleeved with a first counter-force frame and a second counter-force frame which are arranged in parallel. The sides, deviating from the anchor rod static pressure pile, of the first reaction frame and the second reaction frame are jacked and limited through a fastening nut mounted on the anchor rod; the bottom of the first reaction frame abuts against the top of the anchor rod static pressure pile, a hydraulic jack is placed on the top of the first reaction frame, and the top of the hydraulic jack abuts against the bottom of the second reaction frame. According to the structure, the pile pressing force is permanently locked in the building foundation through the synergistic effect of the counter-force frame and the pile sealing concrete, an active reinforcing measure is adopted, and the effect of permanently reinforcing the foundation can be achieved.
Owner:NORTHWEST RES INST CO LTD OF C R E C +4

Supporting and fixing device between steel structure columns

The utility model discloses a supporting and fixing device between steel structure columns, which belongs to the technical field of steel structure installation of housing construction projects and comprises a channel steel mechanism, a fixing mechanism and a fastening mechanism. The channel steel mechanism comprises an inter-column support fixing upper channel steel and an inter-column support fixing lower channel steel, the inter-column support fixing upper channel steel and the inter-column support fixing lower channel steel are connected through a fixing mechanism, and a fastening mechanism is installed in the inter-column support fixing lower channel steel in the channel steel mechanism. And through operation of the fastening mechanism, reinforcing and fixing of the inter-column supporting structure accessory are achieved.
Owner:CHINA MCC17 GRP CO LTD

Novel positioner

The utility model discloses a novel positioner which comprises a bottom plate and a side check block arranged on the side edge of the bottom plate, the side check block and the bottom plate form a space for a tire to enter, a cavity is formed in the side check block, an opening is formed in the inner wall of the side check block, and a filling block and a sliding assembly are arranged in the cavity. According to the utility model, the friction between the tire and the positioning device is rolling friction, so that the damage to the tire is reduced, the effect of guiding the tire into the positioning device is achieved, and the parking difficulty is reduced.
Owner:JIANGXI CHUANHE IND CO LTD

Method for determining an operating state of a vehicle component

ActiveCN115019415BReduce diagnostic costsquick identificationKnowledge graphData mining
One aspect of the present disclosure relates to a method for determining an operational state of a vehicle component of a vehicle. The method comprises providing a first knowledge graph containing information about a plurality of vehicle components of a vehicle, wherein each vehicle component provides one or more signals. The method further comprises determining an operational state of a vehicle component from the plurality of vehicle components, wherein the determining comprises selecting, using the first knowledge graph, a plurality of signals and one or more state parameters required for determining the operational state of the vehicle component. The determining further comprises calculating the one or more state parameters of the vehicle component based on the selected plurality of signals. Finally, the determination of the operational state of the vehicle component comprises determining the operational state of the vehicle component in dependence on the information contained in the first knowledge graph and based on the calculated one or more state parameters.
Owner:ROBERT BOSCH GMBH

Convenient low-consumption tailing treatment system

The invention discloses a convenient low-consumption tailings treatment system, and relates to the technical field of tailings comprehensive utilization, the convenient low-consumption tailings treatment system comprises a dressing plant, the dressing plant is connected with a tailings concentration device body through a self-flowing pipeline, and the lower end of the tailings concentration device body is connected with a first valve and a second valve through tailings pipelines; a stirring barrel is connected to the lower portion of the first valve, the tailing concentration device body is connected with an overflow pool through an overflow pipe, and a water return pipeline connected with a dressing plant is arranged on the left side of the overflow pool. The problems that in a traditional ore dressing plant tailing treatment and underground filling station, an independent or semi-independent system is usually adopted, tailings are firstly conveyed to a large ore dressing plant concentration well to be concentrated and precipitated, then sand is taken from the large ore dressing plant concentration well through a filling station, multiple times of pumping, concentration and stirring are needed, energy consumption is high, investment is large, operation cost is high, and management is complex are solved. Overflow water cannot be recycled nearby, and environmental protection risks exist.
Owner:ANHUI MAANSHAN IRON & STEEL MINING RESOURCES GROUP GUSHAN MINING CO LTD ZHONGJIU MINING BRANCH

A module and method for burst light reception detection and indication

ActiveCN117713947BMeet Timing RequirementsGuaranteed to be normalDividing circuitsFlip-flop
This invention relates to the field of communication technology, providing a module and method for burst optical reception detection and indication. The module includes a voltage divider circuit, a comparison and selection circuit, and a D flip-flop. The voltage divider circuit generates a detection signal based on the burst received optical signal. The detection signal is input to the first input of the comparison and selection circuit, and a RESET signal is input to the second input of the comparison and selection circuit. When the RESET signal is low and the detection voltage is higher than a decision threshold level, the detection signal is output; otherwise, a low level is output. The input of the comparison and selection circuit is connected to the clock input of the D flip-flop to trigger the RxSD signal. The RESET signal also flips and is input to the reset input of the D flip-flop, so that when the RESET signal is high, the RESET signal controls the D flip-flop to reset, causing the output RxSD signal to be low. This invention can meet the timing requirements for the normal operation of both protection time and preamble time RESET signals, ensuring normal ONU registration and normal service operation.
Owner:ACCELINK TECHNOLOGIES CO LTD

Multi-point safety monitoring device for tunnel construction in city

PendingCN121952672AExpand the scope of absorptionphysical health effectsMining devicesArchitectural engineeringMechanical engineering
The invention relates to the technical field of tunnel construction safety monitoring, and discloses a multi-point safety monitoring device for tunnel construction in cities, which comprises a running track, and is characterized in that the running track is provided with a monitoring assembly for monitoring harmful gas in a construction tunnel and reminding monitoring personnel; the monitoring assembly comprises a monitoring box; through rotation of the rotating block, the rotating block slides on the outer wall of the first rotating shaft in a reciprocating mode and pushes the first rotating shaft to swing in a reciprocating mode, the reciprocating swing of the first rotating shaft drives the air inlet pipe to swing in a reciprocating mode through the fixing base, and then the absorption range of the air inlet pipe is enlarged through the reciprocating swing of the air inlet pipe; and air around the monitoring box is sucked into the monitoring box at multiple points as much as possible, so that the deviation of a detection result caused by low gas content in the monitoring box is avoided, and meanwhile, the influence of harmful gas on the body health of construction workers due to the deviation of the detection result is also prevented.
Owner:JIANGXI DIYI CONSTR ENG CO LTD

Manufacturing method and application of chopping blade of quick forging press

The invention provides a manufacturing method and application of a chopping blade of a quick forging press. The manufacturing method comprises the following process steps: (1) blanking; (2) heating; (3) forging; (4) annealing for the first time; (5) finish machining; (6) quenching; and (7) annealing for the second time. And the method can be applied to manufacturing of the blade of the quick forging press with the model of 20MN or 40MN. The method can greatly reduce the production cost and improve the economic benefit.
Owner:宝武特种冶金有限公司

Construction method of super high-rise high-altitude large-span cantilever concrete structure

A kind of construction method of super high layer high altitude large-span cantilever concrete structure, including the following steps: step one, the structure optimization and construction drawing design of cantilever concrete structure;Step two, the deepening design of measure support, measure support includes support frame and hanging basket;Step three, main body first construction;Step four, precast concrete beam section field prefabrication;Step five, the manufacture and installation of support frame;Step six: the hoisting of precast concrete beam section;Step seven: the construction of cast-in-place concrete section;Step eight: the installation of upper pull rod and lower support rod;Step nine: in turn remove hanging basket, hanging platform and support frame.The present application solves the technical problems of complex construction technology, long construction period and high construction risk of large-span cantilever structure.
Owner:CHINA CONSTR FIRST GRP SOUTHCHINA CORP CO LTD GUANGDONG PROVINCE +1

A gate chamber deformation observation device and method based on laser vision

ActiveCN116753857BEasy to implement redundant observationsImprove monitoring reliabilityClimate change adaptationHeight/levelling measurementRelative displacementObservational method
The application discloses a laser vision-based lock chamber deformation observation device and an observation method, and proposes a new method for monitoring the wall top displacement of a ship lock chamber based on joint deformation accumulation. The method utilizes the joint treatment of the ship lock chamber section, accumulates the horizontal displacement of the overall wall top of the lock chamber through the relative displacement meter between adjacent lock sections, adopts laser vision technology, and calculates the transverse horizontal dislocation, radial opening and vertical uneven settlement of the joint between the lock sections through high-precision shooting and computer vision extraction. Meanwhile, an assembly method of the device is given, so that the installation process is simple and easy to implement, the installation method is scientific and reasonable, and the measurement accuracy is ensured.
Owner:HUASHE TESTING TECH CO LTD +4

Chain lubricant smearing device

The utility model relates to a chain lubricant smearing device which comprises a carrier. A mounting bracket is arranged on the carrier; a chain guide rail A and a chain guide rail B are arranged on the mounting bracket; the chain guide rail A and the chain guide rail B are vertically arranged; channel channels are respectively arranged on the lower surface of the chain guide rail A and the upper surface of the chain guide rail B; a gap is formed between the lower surface of the chain guide rail A and the upper surface of the chain guide rail B; the device is reasonable in design, compact in structure and convenient to use.
Owner:QINGDAO PAGULD LUBRICATION TECH

Uses of insecticidal proteins

This invention discloses the use of an insecticidal protein, specifically a method and its application for controlling lepidopteran pests. The method includes contacting the lepidopteran pests with the insecticidal protein, or introducing a nucleic acid molecule encoding the insecticidal protein into a plant, causing the lepidopteran pests to feed on the plant. The insecticidal protein contains the amino acid sequence shown in SEQ ID NO:2, SEQ ID NO:3, SEQ ID NO:4, SEQ ID NO:5, SEQ ID NO:6, or SEQ ID NO:20. In this invention, the Cry1Da1 proteins BD1-002, BD1-018, BD1-019, BD1-021, BD1-022, and BD1-022S exhibit good insecticidal activity against the soybean pest, the silver-striped armyworm.
Owner:BEIJING DABEINONG BIOTECHNOLOGY CO LTD

Door sealing opening anti-cracking structure

The utility model provides a door sealing opening anti-cracking structure, and relates to the technical field of buildings. The door sealing opening anti-cracking structure comprises a new wall body and an old wall body, a plurality of embedded steel bars are arranged between the new wall body and the old wall body, one ends of the embedded steel bars are embedded into the new wall body, and the other ends of the embedded steel bars are embedded into the old wall body; reinforcing plates are symmetrically arranged on the two sides of the new wall body, the reinforcing plates are connected through a first connecting piece and a second connecting piece, and an inner reinforcing layer and an outer reinforcing layer are arranged on the inner side and the outer side of each reinforcing plate respectively. The anti-cracking structure can improve the connecting strength of the new wall and the old wall, prevent the wall from cracking and improve the attractiveness of the wall.
Owner:SICHUAN TIMES LINKAGE INVESTMENT CO LTD

A dust removal device

ActiveCN224270629Uavoid effluxReduce overall layout spaceCombination devicesEnvironmental engineeringFiltration mechanism
This utility model provides a dust removal device, relating to the field of dust removal technology. The utility model includes a housing, a suction mechanism, and a filtration mechanism disposed within the housing. The suction mechanism includes a suction pipe and a suction pipe connected to the housing. A fan is mounted on the suction pipe, and the suction pipe draws in dust-laden gas. The filtration mechanism includes a bottom plate and a partition plate disposed within the housing. The suction pipe communicates with the upper space of the partition plate, and the suction pipe communicates with the lower space of the partition plate. The bottom plate is located below the air outlet end of the suction pipe. A filter channel is provided at the bottom of the partition plate, and a toothed plate is movably connected to the side wall of the filter channel. The housing above the bottom plate is filled with water at a level not higher than the bottom of the filter channel. This utility model removes dust and moisture from gas without the need for a large-scale dust removal system, using external air circulation.
Owner:四川永祥光伏科技有限公司

Fiber array detection device for four-quadrant photodetector

The application discloses a fiber array detection device for a four-quadrant photodetector, which comprises a body, a first end face and a second end face arranged in parallel along a first direction, and a side face extending along a second direction between the first end face and the second end face, wherein four V-shaped grooves arranged in parallel along the second direction are arranged on the side face; four optical fibers, which comprise a cylindrical optical fiber body and a protective layer wrapped on a part of the optical fiber body, and the part of the optical fiber body not wrapped by the protective layer is fixed in the V-shaped groove, and the protective layer is located on the side away from the body of the first end face; the part of the optical fiber body of the four optical fibers in the V-shaped groove is located on a concentric circle, and the distance between the part of the optical fiber body of the adjacent two optical fibers in the V-shaped groove is equal. The fiber array detection device for the four-quadrant photodetector can test the four quadrants of the four-quadrant photodetector simultaneously through the fiber array, improve the test precision, and improve the test efficiency.
Owner:CHONGQING EAGLE VALLEY OPTOELECTRONICS

Simulation device for foundation load test

The utility model provides a simulation device for a foundation load test, and the device comprises a main body which is arranged at a test site; a first opening is formed in the storage container, the storage container is hollow, and the first opening abuts against the main body so that the storage container can be buckled to the main body, and therefore soil can be contained in the storage container; the lifting mechanism is arranged on the main body and connected with the storage container, and the lifting mechanism is used for applying a first acting force for driving the storage container to be separated from the main body, so that the soil body in the storage container is discharged through the first opening; the technical problem that a storage container is difficult to move out of a soil body in an existing foundation load test is effectively solved, the situation that in a traditional method, manpower or small excavating equipment is needed to remove the soil body in a narrow space is avoided, a large amount of manpower and material resources are saved, the risk of equipment damage caused by misoperation is reduced, and the working efficiency is improved. And a more efficient and safer operation mode is provided, and the method has important significance for improving the preparation and execution process of a foundation load test.
Owner:CHINA WATER RESOURCES PEARL RIVER PLANNING SURVERYING & DESIGNING

A method for identifying land cover in a highly heterogeneous region

This invention discloses a method for identifying land cover in highly heterogeneous areas. The method includes: collecting heterogeneous historical land cover products of the target area and obtaining stable regions of different cover types through overlay analysis; dividing the target area into blocks based on its latitude and longitude information with a spatial constraint of 1°×1°, then setting three thresholds of 50, 70, and 100, and using a stratified sampling strategy to obtain uniformly distributed sample data of the target area; acquiring temporal optical, radar, and digital elevation data of the target area, and addressing the influence of clouds and rain through data synthesis; and finally constructing a tile-based classification model for classification. The tile-based classification model constructed in this invention addresses the heterogeneity of plateau regions, fully considering the similarity of adjacent land features and the large climate span of the plateau. Simultaneously, a strategy for stable, rapid, and uniform sample data generation is developed, saving material and financial resources. The mapping results provide data support for ecological civilization construction and biodiversity conservation.
Owner:YUNNAN UNIV

Electric appliance shell nut punch forming device

The utility model provides an electric appliance shell nut punch forming device which comprises a working table, a clamping template and a punching assembly, the clamping template and the punching assembly are arranged on the working table, the working table comprises a supporting plate and supporting legs, the middle of the supporting plate is provided with a vertically-through hollow-out part, the clamping template comprises an upper template and a lower template, and the upper surface of the lower template is provided with a groove. A round hole is formed in the middle of the upper die plate, and the stamping assembly corresponds to the round hole in position. According to the utility model, the traditional pull riveting processing is converted into punching riveting processing, so that the riveting processing can be accurately completed, manual operation is not needed, manpower and material resources are saved, and the processing precision is also improved; the punch extrudes the outer side of the rod portion of the riveting nut in a mode similar to pull riveting, the overall structure of the riveting nut cannot be damaged, the strength of the riveting nut is maintained, and the fixing effect is improved. The punching head can be arranged at each position to be machined on a workpiece, so that all machining is completed through one-time punching, and the working efficiency is improved.
Owner:JINGZHOU TAISHENG RONGHE GENERAL MASCH CO LTD

A method for testing a circular tunnel mode through a non-uniform soil body

The present application relates to a kind of circular tunnel modal test methods crossing non-uniform soil body, the non-uniform soil counterforce equivalent simulation device used includes, the cross section module group of multiple cross section modules, test piece and fixed frame and base track.The zero stiffness composite spring includes metal spiral spring, rubber, spring top end cover, spring fixed screw rod, spring bottom end cover, bottom screw rod, contact plate and displacement-shaft force sensor, steps are as follows: design data arrangement: determine the geometric parameters of circular tunnel, material parameters and soil parameters, determine test scale ratio and the geometric size and discrete length of structure model;Test piece processing;Strain gauge positioning installation;Soil spring parameter calculation;Zero stiffness composite spring debugging;Cross section module assembly;Cross section module group installation;Test piece installation;Sensor debugging;Loading and testing: data acquisition analysis.
Owner:TIANJIN UNIV