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106results about How to "Delay life" patented technology

Neural network and fuzzy control fused electrical fire intelligent alarm method

The invention discloses a neural network and fuzzy control fused electrical fire intelligent alarm method. The method comprises the following steps of: 1, acquiring a leakage current signal, current and voltage signals, an arc light signal, a temperature signal and a field electromagnetic environment parameter signal by using a sensor on site, and pre-processing signals acquired by the sensor by using a velocity detection algorithm; 2, transmitting processed data to a three-layer feedforward error counterpropagation neural network and processing, wherein the neural network is subjected to supervised learning and establishes a weight matrix in advance; and 3, transmitting electrical circuit undamage probability, electrical circuit damage probability, and electrical circuit fire probability output by the neural network to a fuzzy inference module and performing fuzzy inference to acquire a forecast result of electrical fire. In the method, the probability of the electrical fire is accurately forecast by using the advantages of advanced theories, such as neural network, fuzzy control and the like, and without depending on deep knowledge of an object, the electrical fire forecasting accuracy is obviously improved and the damage of the electrical fire can be effectively prevented and reduced.
Owner:彭浩明

Fire-resistant silicon rubber and preparation method thereof and cable

The invention discloses a fire-resistant silicon rubber, which is prepared by the following raw materials by weight: 100 parts of silicon rubber, 0.1 to 3 parts of hydrogen-containing silicone oil, 2 to 15 parts of hydroxy silicone oil, 10 to 30 parts of pyrogenic silica, 10 to 30 parts of silicon epitaxy material, 20 to 50 parts of nanomontmorillonite, 10 to 30 parts of silicon carbide, 1 part of vulcanizing agent and less than 50 ppm of platinum compound calculating at the platinum quantity compared with the silicon rubber. The invention also provides a preparation method of the silicon rubber and a fire-resistant cable prepared with the silicon rubber. The fire-resistant silicon rubber has the performances such as stable fire resistance and good insulation performance, and has simple preparation method. The cable which is prepared with the fire-resistant silicon rubber has simple structure and convenient process. Particularly the reliability of the fire-resistant cable can be greatly improved.
Owner:浙江元通线缆制造有限公司

Vehicle emergency avoidance system and method

InactiveCN107170265AReduce not knowing that there is an emergency vehicle behindReduce the defects of not knowing how to give wayRoad vehicles traffic controlEngineeringEmergency situations
The present invention discloses a vehicle emergency avoidance system and method. The system comprises a common vehicle, an emergency vehicle, a first intelligent terminal, a second intelligent terminal and a car networking service platform. The common server and the emergency vehicle are respectively provided with the first vehicle intelligent terminal and the second intelligent vehicle terminal, the second vehicle intelligent terminal is configured to obtain the driving information of the emergency vehicle; and the car networking service platform is configured to receive the driving information of the emergency vehicle, determine a common vehicle influencing the driving of the emergency vehicle according to the driving information and emit avoidance signals to the common vehicle. The vehicle emergency avoidance system and method can timely notice front vehicles avoid the emergency vehicle so as to reduce the defect that a common vehicle does not know there is an emergency vehicle behind and does not perform avoidance and effectively reduce the life loss and property loss of people.
Owner:CHERY AUTOMOBILE CO LTD

Oxaliplatinum liposome glucose preparation and its preparation method and application

The invention discloses an oxaliplatin liposome glucose preparation and the preparation method and application, relating to an oxaliplatin liposome glucose solution preparation used for tumor resistance and the preparation method and application. An oxaliplatin liposome glucose preparation is formed by liposome which prepared by oxaliplatin, hydrogenated phosphorus, cholesterol and DSPE-PEG2000, and is dissolved in glucose solution; wherein the weight ratio of the hydrogenated phosophorus and the oxaliplatin is 1:1-50; the weight ratio of the hydrogenated phosophorus, cholesterol and the DSPE-PEG2000. The preparation method is that the hydrogenated phosophorus, cholesterol and the DSPE-PEG2000 are weighed according to proportioning by weight in a description and then fixed together; tertiary butyl alcohol is added into the fixture for the fixture to be stirred and dissolved, then the fixture is precooled; the oxaliplatin saturated water solution with 4-10 percent of glucose after cooling and drying is stirred, dissolved and emulsified by an emulsion balancing machine and then prepared into liposome solution by a homogenizer and a nanometer extruder, separated and refined through a filter column to prepare the oxaliplatin liposome glucose solution.
Owner:JIANGSU AOSAIKANG PHARMA CO LTD

Identification method for rockburst disaster micro-seismic monitoring and early-warning key points

The invention belongs to the field of mine safety, and relates to an identification method for rockburst disaster micro-seismic monitoring and early-warning key points by the adoption of a micro-seismic monitoring system. The method is characterized in that a rock mass is excavated to determine monitoring areas, moreover, the monitoring areas are numbered, the micro-seismic monitoring system is installed and performs real-time monitoring, a micro-seismic event active ratio-accumulative apparent volume-time curve graph is then drawn, the changing conditions, along with the time, of the micro-seismic event active ratio and the accumulative apparent volume are mastered to identify the rockburst disaster micro-seismic monitoring and early-warning key points. The method is easy to construct, good in effect and high in reliability and early-warning accuracy, shortens the early-warning time for rock mass destroying and stability losing, improves the construction safety environment and avoids personnel and equipment losses. The identification method is suitable for mines, tunnels, slopes, hydropower station chambers and other fields needing rock mass excavation.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)

Prevention method of shallow-buried steeply-inclined coal seam rock burst

The invention relates to a prevention method of shallow-buried steeply-inclined coal seam rock burst. The prevention method includes following steps: (A) drilling a hole from ground to pre-splitting blasting a terrane or a rock pillar in floor and roof of a coal seam; (B) performing water-injection softening and pressure-releasing blasting to a mined coal seam; (C) after the coal seam being mined, performing deep-hole blasting to the floor and roof of the coal seam so that a hanging arch of the floor and roof is cut in advance and accumulated bending elasticity energy is released; and (D) filling a goaf of a working face with nonflammable objects after the coal seam being mined. In the prevention method, energy of the floor and roof are released through various measurements so that a strong rock burst disaster caused by fractured terrane or the rock pillar in the floor and roof can be prevented well. The method can effectively reduce an apparent intensity of a dynamic disaster during a mining process of a shallow-buried steeply-inclined coal seam and can reduced property loss and danger of worker life.
Owner:CHINA UNIV OF MINING & TECH

Median-multiple fire-fighting foam monitor

Relating to the field of fire-fighting equipment, the invention provides a median-multiple fire-fighting foam monitor, which mainly solves the defects existing in single-multiple and median-multiple fire-fighting foam monitors. The median-multiple fire-fighting foam monitor includes a connecting pedestal, launch foam barrels and a pipeline barrel frame connecting the connecting pedestal and the launch foam barrels. The connecting pedestal, the pipeline barrel frame and the launch foam barrels are equipped with a mixed solution channel communicated with a mixed foam solution. The launch foam barrels include barrel bodies and nozzles disposed at front ports of the barrel bodies. The foam monitor is characterized in that there exist multiple launch foam barrels, which are fixed on the pipeline barrel frame in a vertical direction and have the same launch direction. Specifically, a low multiple launch foam barrel is positioned below, and launch foam barrels higher than the low multiple launch foam barrel are positioned above. The mixed solution pipeline in the pipeline barrel frame is communicated with the nozzles of all launch foam barrels, and each nozzle is respectively located in the front port of a corresponding barrel body. Compared with traditional low multiple foam extinguishing systems, the fire extinguishing efficiency is improved; compared with traditional high multiple foam extinguishing systems, the launch range is increased.
Owner:章丘市消防器材有限责任公司

Smart pill dispenser

The invention is related to a smart pill dispenser which is used in a household, on a desktop, by keeping the different types of and different dosed medication inside the container, which provides information to the user in order for the user to take his / her medication in time and in correct doses and which can inform the user interactively communicate with smart devices and such as cell phones, and smart watches.
Owner:EKIN TEKNOLOJI SANAYI VE TICARET ANONIM SIRKETI

Formulation comprising itraconazole

Formulations of azole antifungals such as itraconazole and particularly formulations, co-formulations and compositions of itraconazole with one or more oligomeric and / or polymeric excipients are disclosed. Methods for preparation of the formulations, co-formulations and compositions include co-precipitating the two materials from a common solvent or solvent mixture using a compressed (typically supercritical or near-critical) fluid anti-solvent as in the GAS (Gas Anti-Solvent) precipitation method. The formulations, co-formulations, compositions, methods of making and methods of delivering, are useful as pharmaceutical compositions and in medical treatment by virtue of their at least parity, preferably improved or enhanced solubility or dissolution characteristics, resulting in at least parity, preferably improved or enhanced bioavailability and / or pharmacokinetics.
Owner:NEKTAR THERAPEUTICS INC

Fire extinguisher system, peripheral system and fire extinguisher supervision system and method

The invention relates to a fire extinguisher system. The fire extinguisher system comprises a fire extinguisher kit, an IoT communication device, a smoke detector, a pressure sensor and a processor, wherein the fire extinguisher kit comprises a fire extinguisher and a peripheral device matched with the fire extinguisher; the IoT communication device, the smoke detector, the pressure sensor and theprocessor are arranged on the fire extinguisher kit; the pressure sensor is connected with the fire extinguisher; the IoT communication device is connected with each of the smoke detector and the pressure sensor; and the processor is connected with each of the pressure sensor, the smoke detector and the IoT communication device. The fire extinguisher system is capable of providing more correct and timely fire extinguishing information feedback to fire extinguishing managers and common users, so as to decrease the life and property loss caused by fires. The invention furthermore relates to a peripheral system and a fire extinguisher supervision system and method matched with the fire extinguisher.
Owner:四川智德胜行信息技术有限责任公司

Unmanned aerial vehicle guided multi-vehicle cooperation fire extinguishing method and fire extinguishing system thereof

The invention provides an unmanned aerial vehicle guided multi-vehicle cooperation fire extinguishing method. The method comprises the following steps that a ground control terminal is started, an unmanned aerial vehicle performs flight search along a search waypoint and establishes ground two-dimensional map information, a fire point is searched and accurately positioned, spatial position information of the fire point, the unmanned aerial vehicle and all fire-fighting unmanned vehicles is calculated and marked, after path planning, all the fire-fighting unmanned vehicles travel in a formation mode to advance towards the fire point, autonomously avoid obstacles and establish a three-dimensional sparse point cloud picture, whether the fire-fighting unmanned vehicles advance or not is judged through a temperature sensor, a fire extinguishing task is started when the fire-fighting unmanned vehicles are close to the fire point, and after the fire extinguishing task is completed, the unmanned aerial vehicle and all the fire-fighting unmanned vehicles return along the original path. The invention further provides a multi-vehicle cooperation fire extinguishing system suitable for the method. The multi-vehicle cooperation fire extinguishing system comprises the unmanned aerial vehicle, the plurality of fire-fighting unmanned vehicles and the ground control terminal. According to the unmanned aerial vehicle guided multi-vehicle cooperation fire extinguishing method and the fire extinguishing system thereof, the time required by the unmanned vehicles to arrive at the fire point can be greatly shortened while the large-range searching and accurate positioning of the position of the fire point are ensured, and the efficiency of completing the fire-fighting task is improved.
Owner:YANSHAN UNIV

Modified raw soil material

The invention provides a modified raw soil material, which comprises the following raw materials in terms of weight unit: 100 parts of raw soil, 5-15 parts of glass slag, 0.2-0.8 part of bamboo fiber, and 13 parts of glutinous rice slurry. The formula involved in the invention can improve the ductility and deformation ability of raw soil test pieces to a large extent, and prolongs the time to failure of the test pieces. In real life, the earthquake-resistant time of raw soil buildings can be prolonged, and the resident life and property loss can be reduced. Under the circumstance of no compound addition scheme in the prior art, the invention creatively proposes the compound addition conception, the glutinous rice slurry is taken as the adhesive, and glass slag and bamboo fiber are added in raw soil to modify it. The formula improves the compressive strength, deformability and time to failure of raw soil buildings.
Owner:CHANGAN UNIV

Intervention type active speed limiting control device of motor vehicle

The invention provides an active speed limit controlling device of motor-vehicle-involved mode, aiming at solving passiveness and limitation which are introduced by the traditional 'electronic eye' speed detecting method and the novel method of 'interval speed detection' in the detection of an over-speed vehicle on a freeway. The active speed limit controlling device comprises an emission source of a speed-limited value signal, a vehicle-bone signal receiver, a Hall sensor, a speed limit indicator and a circuit thereof, an over-speed alarming circuit, a switch circuit of an electronically-controlled accelerating pedal and components thereof, a single-chip speed controlling software and so on. The emission source is arranged under or on the ground of the entrance of a freeway, with different pulse frequencies representing different vehicle speed limit values. When the vehicle exceeds the speed limit, the system device emits an over-speed alarming signal, and the driver needs to decelerate by self, otherwise, at the end of the alarm, the accelerating pedal does not take effect to the oil-supplied control instantly, and recovers after automatically decelerating the vehicle to a given value in a punishing way. The active speed limit controlling method and the process thereof are carried out repeatedly, which leads the vehicles to be driven in order, reduces the occurrence of traffic jam, and prevents a traffic accident which is easily caused by over-speed.
Owner:李扬荣 +2

Acoustic emission multi-precursor method and device for tension-shear toppling type karst dangerous rock instability early warning

The invention discloses an acoustic emission multi-precursor method and device for tension-shear toppling type karst dangerous rock instability early warning, and aims to solve the problem of automatic early warning of tension-shear toppling type dangerous rock collapse disasters in karst areas. The method comprises the following steps: firstly, formulating a relationship rule between four dangerous rock acoustic emission precursor characteristics and a stability level according to acoustic emission change characteristics of dangerous rock instability precursor; then, collecting four acousticemission precursor characteristics of each stage in the dangerous rock instability process from two ways of an indoor test and an on-site example to serve as a machine learning sample set; and finally, training an information vector machine learning model with excellent adaptability to complex classification problems by utilizing the training sample set. Therefore, a nonlinear mapping relation between the acoustic emission precursor characteristics and the dangerous rock stability is established, quick evaluation of the dangerous rock stability grade in on-line monitoring is further realized,and an evaluation result is transmitted to an early warning information receiving terminal of a dangerous rock manager through an early warning device.
Owner:GUANGXI UNIV

Micro-seismic multi-precursor method and device for tension fracture falling type karst dangerous rock instability early warning

The invention discloses a micro-seismic multi-precursor method and device for tension fracture falling type karst dangerous rock instability early warning, and aims to solve the problem of automatic early warning of tension fracture falling type dangerous rock collapse disasters in karst regions. The method comprises the steps of firstly, formulating a comprehensive relationship rule between fourmicroseism precursor characteristics and a dangerous rock stability grade according to micro-seismic change characteristics before instability of dangerous rock; then collecting four micro-seismic precursor characteristics of each stage in the dangerous rock instability process from two ways of indoor test and field instance to serve as a machine learning sample set; and finally, establishing a LightGBM classification machine learning model with excellent adaptability to processing parallelization and large-scale high-dimensional data problems by utilizing the machine learning sample set. Therefore, a nonlinear mapping relationship between the micro-seismic precursor characteristics and the dangerous rock stability is established, rapid evaluation of the dangerous rock stability grade in online monitoring is further realized, and an evaluation result is transmitted to an early warning information receiving terminal of a dangerous rock manager through an early warning device.
Owner:GUANGXI UNIV

Stable non-crystalline formulation comprising losartan

InactiveUS20060160871A1Handling and advantageWell formedBiocidePowder deliveryLosartanTreatment hypertension
One or more embodiments of the invention provide various novel formulations, and tablet dosage forms, comprising losartan that are non-crystalline, stable, and / or otherwise improvements over known losartan formulations. One or more embodiments of the invention further provide methods for preparing the formulation, methods for preparing the tablet dosage form, and to methods of administering the tablet dosage and / or formulation comprising losartan. The losartan-containing formulations may be administered to a user to treat hypertension, and related conditions.
Owner:NEKTAR THERAPEUTICS INC

Rock burst calamity infrared thermal image early warning identification method

The invention belongs to the field of mine safety and relates to a rock burst calamity infrared thermal image early warning identification method. The method is characterized in that monitoring areas are determined around a target rock and are numbered, an infrared thermal image monitoring system is installed, real-time monitoring is performed, then an average rock temperature-stress-time curve map is drafted, average rock temperature and stress change conditions are analyzed, and rock burst calamity early warning is identified. The method is simple in construction, good in effect and quite high in reliability and accuracy, reduces the possibility of rock burst calamity false alarm and missed alarm, greatly improves the accuracy and the sensitivity of the rock burst calamity early warning, can improve the construction safety environment and prevents personnel and equipment loss. The method is mainly applied to rock burst power calamity early warning when a mine rock generates rupture instability, and realizes a more remarkable effect especially when an engineering rock is a hard rock.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)

Building component automatic installation method, device and computer readable storage media

The invention discloses an automatic installation method of a building component. The automatic installation method of the building components comprises the following steps that an installation deviceis controlled to move to a position corresponding to second position information when receiving installation instructions, when a main hand claw grabs a building component, the building component iscontrolled to move through the main hand claw based on target position information; and when the building component moves to the position corresponding to the target location information, the main hand claw is controlled to install the building component, and an auxiliary hand claw is controlled to connect and fix the building component. The invention further discloses an automatic installation device of the building component and a computer readable storage media. According to the automatic installation method and device of the building component and the computer readable storage media, automatic installation of the building component is achieved, manual operation of the installation process is greatly reduced, measuring unreeling and lifting measures are not required, potential safety hazards of the building component in aerial work is reduced, human life is ensured, the installation cost is saved, and the installation quality and efficiency of the building component are enhanced.
Owner:李灿

Portable comprehensive management system for traffic safety of road managed and controlled vehicle

The invention relates to a portable comprehensive management system for the traffic safety of a road managed and controlled vehicle, belonging to the technical field of highway engineering in transportation engineering. The system includes an on-board control device, an on-board road traffic safety monitoring and management subsystem and a remote management subsystem for the traffic safety of themanaged and controlled vehicle. According to service demands of safe driving, real-time road condition inspection and emergency management of road managed and controlled vehicles under special conditions, the comprehensive management system of the invention actively prevents risks of the managed and controlled vehicles through "information environment perception, intelligent monitoring and early warning and assisted driving", thus effectively guaranteeing the traffic safety of the managed and controlled vehicles under special conditions, and assisting in the emergency handling and management of emergencies through rapid reporting of road conditions and event information in adverse weather like rainy and foggy weather, and in traffic accidents, and management and control of queuing and passing of the managed and controlled vehicle vehicles. The system is easy to promote and apply.
Owner:BROADVISION ENG CONSULTANTS +1

Grounding two-way digital information communication device utilizing ground electric field detection technology

InactiveCN103023581AImprove rescue efficiencyReduce search and rescue difficultiesTransmissionElectric fieldElectricity
A grounding two-way digital information communication device utilizing ground electric field detection technology comprises an underground device and a ground device. The underground device is composed of an underground communication device and an underground electric dipole moment transmitting / receiving antenna which are electrically interconnected. The underground communication device is arranged in an underground mine refuge chamber or a tunnel and the underground electric dipole moment transmitting / receiving antenna is buried in an underground mine or a tunnel geologic body. The geologic bodies of the underground mine or the tunnel are semi-conductors. The space between the underground device and the ground device is formed to be a geologic body 'channel' for digital communication. The ground device is composed of a ground communication device and a ground electric dipole moment transmitting / receiving antenna which are electrically interconnected. The ground communication device is installed on the ground and the ground electric dipole moment transmitting / receiving antenna is buried in the shallow ground. According to the grounding two-way digital information communication device utilizing ground electric field detection technology, functions of the two-way remote communication and the remote two-way remote control and metering in the ground half-space and water can be achieved.
Owner:湖南网优科技发展有限公司

Cross-shaped non-toppling road cone

The invention relates to a cross-shaped non-toppling road cone comprising a hollow cone-shaped shell (1). The cross-shaped non-toppling road cone is characterized in that the cross section of the cone-shaped shell is cross-shaped, and a lower part side face (1C) of the cone-shaped shell is arched; and the bottom parts of two adjacent shell walls of the cone-shaped shell are connected through a solid block (1A) or a hollow cavity filled with an heavy object therein, and the centre of gravity of the whole cone-shaped shell is positioned below a border line of a linear side face of the cone-shaped shell and the arched lower part side face (1C). The road cone can automatically reset into an upright position when the road cone inclines and overturns under the action of external force, has the advantages of convenient use and easy carrying, and improves the safety of road traffic.
Owner:邱丽伟 +1

Transformer substation protection system

InactiveCN106297146AReduce loss of life and propertyReduce the number of connecting linesFire rescueFire alarmsTransformerTriggering device
The invention discloses a transformer substation protection system. The system comprises a fire alarm system, a small animal repelling system, a signal protection device and a steel structured kit, wherein the fire alarm system comprises a trigger device, a fire alarm controller, a fire alarm device, a fire-fighting linked controller and automatic fire-fighting equipment, the animal repelling system comprises a snake repeller, a mouse repeller, an wireless integrated controller and a microcontroller, the snake repeller and the mouse repeller are electrically connected with the wireless integrated controller, the signal protection device comprises a cable and a cable signal transmitter, an additional wire is arranged on the lower end of the cable, signal generators are arranged on both ends of the additional wire, the signal generators are synchronized with the signal transmitter, a synchronous controller is arranged in the cable signal transmitter, and a same-frequency device is arranged in the synchronous controller. The transformer substation protection system can conduct fire pre-warning, small animal repelling and signal transmission protection.
Owner:JINAN CITY CHANGQING DISTRICT POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO +1

Coal mine multimedia comprehensive information issuing system

The invention provides a coal mine multimedia comprehensive information issuing system comprising a ground control center, a ground client, a mining display board, a voice alarm case, an acousto-optic alarm, an explosion-proof and intrinsically-safe computer, a mining PDA, a wireless AP, a ground wireless network, and a cell phone terminal. The ground control center comprises a ground switch, a central server, and a work station. The various devices in the ground control center are in bidirectional signal electrical connection through an Ethernet. The mining display board, the voice alarm case, the acousto-optic alarm, the explosion-proof and intrinsically-safe computer are all in signal electrical connection with the ground switch. The ground client and the wireless AP are in bidirectional signal electrical connection with the ground switch. The mining PDA and the wireless AP are in signal electrical connection through wireless communication. The cell phone terminal is in bidirectional signal electrical connection with ground switch through the ground wireless network. The coal mine multimedia comprehensive information issuing system is simple and clear in structure, greatly improves a coal mine information issuing level, and effectively reduces accidents and life and property loss in mine disasters.
Owner:CHANGZHOU RES INST OF CHINA COAL TECH & ENG GRP +1

Disposable coloclysis administer drug dialyser

The invention relates to a one-off coloclysis drug dialyzer and is characterized in that the one-off coloclysis drug dialyzer comprises a liquid holding container, a waste liquor receiving device, and a pipeline for the input and output of liquid through a middle gut; the pipeline is connected with the liquid holding container and the waste liquor receiving device to form a close structure; the pipeline comprises a waste liquor precipitation tube and a liquid inlet tube; the waste liquor precipitation tube is a hollow tube, the front-end thereof is matched with a body middle gut inlet, and the back-end thereof is connected with the waste liquor receiving device; one end of a liquid injection tube is communicated with the liquid holding container, and the other end passes through the tube wall of the waste liquor precipitation tube and enters into the inner cavity of the waste liquor precipitation tube, and enters into the body middle gut through the front port of the waste liquor precipitation tube; the liquid holding container, the waste liquor receiving device and the pipeline are made of one-off medical material. Under the condition without any auxiliary facilities, the one-off coloclysis drug dialyzer can be conveniently used for one-off coloclysis (comprising high-low middle gut) of a patient, and medication transfusion and dialysis treatment without fecal pollution.
Owner:BEIJING SUNNY MEDICAL

Method for evaluating safety of service bridge structure

The invention provides a method for evaluating the safety of a service bridge structure, which comprises the following steps: periodically acquiring images of the cross section of the bridge structure, converting the images, processing the converted images by binarization, and computing a zero-dimensional Betti number and a one-dimensional Betti number of the images processed by binarization. In the invention, according to the algebraic topology, for the two-dimensional space (namely the cross section of the bridge), the zero-dimensional Betti number describes the amount of blocks existing in the region of the cross section of the bridge, wherein when the number of the blocks obviously increases or decreases, the condition explains that the bridge structure is changed by extrusion or external environment corrosion and is in a dangerous state, and when the number slightly changes or does not change, the condition explains that the bridge structure is normal; and the one-dimensional Betti number describes the number of holes existing in the region of the cross section of the bridge, wherein when the number of the holes obviously increases, the condition explains that the number of the holes (namely bubbles) in the bridge structure increases and the bridge structure is in a dangerous state, and when the number slightly changes or does not change, the condition explains that the bridge structure is normal. Thus, the invention can quantitatively make an evaluation on the safety of the service bridge structure to effectively prevent accidents from occurring.
Owner:KUNMING UNIV OF SCI & TECH

Safety device of vehicle tyre

InactiveCN1817671AReduce line speed differenceReduce steeringTyre partsMultiple wheel assemblyLocking mechanismEngineering
A high-safety safeguard on the hub in the car tyre without internal tube for continuous running after the tyre is exploded is composed of 4-6 or more T-shaped flap blocks made of alloy steel, and axial locking mechanisms consisting of fastening screw bolt with baseplate and nut for splicing said flap blocks to become a circular ring.
Owner:梁檬

Underground building opening flood prevention facility

PendingCN111058420APrevent backflowEnhance confidence in useDamsDykesSocial benefitsBasement
The invention discloses an underground building opening flood prevention facility. A movable baffle, a movable baffle shaft, an elevating steel cable and an elevating cable winch are included. The elevating steel cable is arranged on side barricades on the two sides of a ground inlet and outlet port of an underground building. The movable baffle is hinged to the movable baffle shaft. The two endsof the movable baffle shaft are borne on the elevating steel cable. The elevating steel cable can drive the movable baffle shaft to ascend. The movable baffle and the movable baffle shaft are locatedin a ramp in the ground inlet and outlet port of the underground building, a water level induction controller is located on the basement side wall nearby the ramp bottom of the underground building, and a signal connecting wire of the water level induction controller is embedded in the ramp side wall of the underground building. The underground building opening flood prevention facility conducts implementation through the current existing engineering technology, additional secondary development is not needed, system manufacturing is simple, usage is convenient, and social benefits are obvious.By means of the underground building opening flood prevention facility, the situation that rainwater flows backwards into the underground building under the situation of the suddenly-happening urbaninland inundation is effectively prevented, and the response capability for the flood caused by the suddenly-happening intense fall is improved.
Owner:广东华方工程设计有限公司

Fire-fighting fire extinguishment device

The invention discloses a fire-fighting fire extinguishment device. The fire-fighting fire extinguishment device comprises a base, and is characterized in that a motor is installed in the base; a leadscrew extending to the outside of the base is arranged at an output end of the motor, and a lifting platform is connected to the outer side of the lead screw; a U-shaped seat is fixed above the lifting platform; a rotary shaft is installed at the inner side of the U-shaped seat; an installation seat is rotationally connected to the inner side of the U-shaped seat through the rotary shaft; and a storage bottle is installed above the installation seat. According to the fire-fighting fire extinguishment device, the lead screw is driven to rotate through the motor, so that the lifting platform isenabled to move up and down, and the storage bottle is driven to lift to reach a proper height to carry out fire extinguishment, and convenience is brought to people for use; and moreover, a first slide block is pushed and pulled through a pneumatic cylinder, an angle of a connection rod is changed, and then a pitching angle of the installation seat is changed, so that a pitching angle of the storage bottle is adjusted, people are facilitated to locate an ignition point, and people can rapidly carry out fire extinguishment, and therefore, threat on the life and property of people is reduced.
Owner:湖南新业态智慧消防科技有限公司
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