35results about How to "Avoid Serious Safety Incidents" patented technology

The invention relates to a radioactive source automatic supervision and real-time monitoring method and a system. The method mainly comprises the following steps: a positioning terminal in which a GPS positioning unit and a CDMA network positioning unit are arranged and source file information is solidified is arranged on a radioactive source; the source file information is stored in a network server of a monitoring center and a source admission range is set up; source position information and source file information is acquired at real time and corresponding source information in the network serve is updated at real time; when the source information stored in the network server changes, the monitoring center automatically obtains prompting information and judges whether the change of the source information is beyond the admission range; when the change of the source information exceeds the admission range, automatic alarm is carried out. The system realizing the method comprises a positioning terminal assembly device, a source information storing device, a source information updating device, a source information monitoring device and a real-time alarm device. The method and the system realize automatic supervision and real-time monitoring of all links of the radioactive source, thereby putting an end to severe security accidents like loss of the radioactive source, etc.

The invention discloses an automatic-curing insulation protective material and a manufacturing technique thereof. The automatic-curing insulation protective material is prepared from 5-25 parts of polysiloxane 1, 2-15 parts of polysiloxane 2, 60-93 parts of polysiloxane 3, 60-90 parts of filler 1, 3-12 parts of filler 2, 25-48 parts of filler 3, 10-20 parts of filler 4, 1-6 parts of filler 5, 0.3-10 parts of assistant 1, 0.1-8 parts of assistant 2, 4-16 parts of crosslinking agent and 0.08-2 parts of catalyst. The automatic-curing insulation protective material is prepared by kneading the three polysiloxanes with different viscosities, five different fillers, two assistants, crosslinking agent and catalyst three times. The product cured by room temperature air has the advantages of high voltage resistance, favorable flame retardancy, certain thermal conductivity, excellent flexibility, excellent plasticity and excellent bonding property. The product is very convenient to mount and demount.

The invention discloses a hydrogen leakage detection control method and system for a hydrogen fuel cell vehicle. The detection control method comprises a starting process control method, a driving process control method and a parking state control method. A direct starting mode and a segmented starting mode in the starting process control method both detect the hydrogen leakage concentration HC, when the hydrogen leakage concentration HC is larger than the safety limit concentration H1, the IGN contactor is disconnected, and the whole vehicle fails to be started. The hydrogen leakage concentration HC is detected in real time in the driving process, all hydrogen cylinder valves are closed when the hydrogen leakage concentration HC is larger than the safety limit concentration H1, the fuel cell is shut down, and the whole vehicle is automatically switched into a pure electric mode. In the parking process, the hydrogen leakage concentration HC can be detected regularly, and data are uploaded to the TBOX when the hydrogen leakage concentration HC is larger than the safety limit concentration H1. Hydrogen leakage detection control strategies are provided in the starting, driving and parking processes of the hydrogen fuel automobile, it is guaranteed that the hydrogen concentration of the automobile is in a safe state, and safety accidents caused by too high hydrogen concentration are avoided.

The invention provides an overtemperature protection control system and an electric water heater and relates to the technical field of water heaters. The overtemperature protection control system comprises an electric leakage protection plug, an isolation communication module, a control device and a temperature sensor. The electric leakage protection plug is electrically connected with the electric water heater through the control device. The control device is electrically connected with the electric leakage protection plug through the isolation communication module. The temperature sensor is electrically connected with the control device and used for collecting temperature data of an inner container of the electric water heater. The control device reads the temperature data, judges whether the temperature data are greater than a set threshold value or not and transmits a control signal to the isolation communication module so as to make the isolation communication module send an outage instruction to the electric leakage protection plug according to the control signal when the temperature data are greater than the set threshold value, so that the electric leakage protection plug is disconnected with an external power supply. The overtemperature protection control system can detect the water temperature in the inner container in real time and can also prevent safety accidents caused by continuous heating of the electric water heater, and the use safety of the electric water heater is guaranteed accordingly.

The invention discloses a rolling bearing property retention reliability predication method. The method comprises: acquiring performance data at an optimal operation period of a rolling bearing, so as to construct a performance sample density function; obtaining a confidence interval of a confidence coefficient and a performance random variable according to the little probability event principle; and according to a Poisson counting process, acquiring frequencies, which are out of the performance random variable confidence interval, of the performance data and the rolling bearing property retention reliability, further acquiring the relative performance retention reliability of the rolling bearing in the future, and predicating the invalidation degree of an optimal performance attitude of the rolling bearing in the future time. By means of the method, any prior information of the performance density function is not needed, performance thresholds are not needed to be preset, the invalidation degree of the optimal performance attitude of the rolling bearing in the future time can be predicated, the predication accuracy is high, the invalidation hidden danger can be discovered in advance, and decisions can be provided for taking intervention measures in time and avoiding occurrence of serious safety accident.

The invention discloses an arbitration method and system for emergency steering, belongs to the technical field of driving assistance; steering lane changing is performed to avoid front dangers if left and right adjacent lanes of a lane where a vehicle is located have no other target objects when an automatic emergency braking system cannot avoid risks. If other target objects exist on only one side of the left and right adjacent lanes, emergency steering is carried out on the adjacent lanes without the target objects; if other target objects exist in the left and right adjacent lanes, the danger degrees of the left and right adjacent lanes are determined respectively, and if the lanes with the danger degrees smaller than a preset danger degree threshold value exist and danger can be avoided after lane changing, lane changing steering is conducted on the lanes; if the lane with the danger degree smaller than the preset danger degree threshold does not exist, steering is not conducted.According to the invention, a safer emergency steering strategy can be realized.

Disclosed is an automatic power-off power distribution cabinet with a fire-fighting structure. The structure includes a cabinet body. A temperature sensor is arranged at the inner top end of the cabinet body, supporting blocks are connected to the surface of the top end of the cabinet body, threaded rods are connected between the supporting blocks in the same longitudinal direction through bearings, clamping pieces are connected to the outer sides of the threaded rods, a transmission gear is in key connection with the outer side of one end of each threaded rod, a toothed plate is in engaged connection below the transmission gears, the lower surface of the toothed plate is slidably connected to the surface of the top end of the cabinet body, a positioning groove is formed in the front sideface of the cabinet body, and a pull rod is slidably connected into the positioning groove. According to the invention, fire extinguishers of various models and sizes can be conveniently installed, when a fire disaster occurs in the cabinet body, power can be automatically cut off and the fire can be automatically extinguished, the use safety of the power distribution cabinet can be ensured, and serious safety accidents can be avoided when no one watches the power distribution cabinet at night.

The present invention discloses a cloud service system based on a rail side detection station. The system comprises an analysis processing device, an application service device, a detection station working state servo device, and an early warning management device. The invention further discloses a cloud service method based on a rail side detection station. According to the system and the method provided by the invention, since the data is uniformly stored in a redundant storage server and a target storage server, thus when one or more storage nodes are offline due to faults, the access of the data can be carried out as usual in the redundant server, and the reliability and effectiveness of vehicle traffic safety are improved. The generation and pushing of data can be completed in an effective time, and a strong guarantee is provided for the travel safety of a train. The data in a detection station server is effectively stored and transmitted, and serious accidents can be prevented. A strict access is arranged, and the ascription of liability is effectively solved at the same time.

The invention relates to an inverted-type whole-process safety device used for a cantilever-type parking garage. The inverted-type whole-process safety device comprises a safety mechanism and a safetystrip. The safety strip is provided with a plurality of safety strip groove openings. The safety mechanism comprises a shell, a safety locking dog, a tension spring, an electromagnetic iron attracting assembly and a travel switch. The safety locking dog comprises a safety locking dog extending-out end and a safety locking dog connecting rod. The safety locking dog extending-out end is matched with the safety strip groove openings. The tension spring is connected with the safety locking dog connecting rod and controls the safety locking dog extending-out end to extend out for locking. The electromagnetic iron attracting assembly is connected with the safety locking dog connecting rod and controls the extending-out end to retract for unlocking. Compared with the prior art, the inverted-typewhole-process safety device is provided with the safety mechanism and the safety strip, a lifting platform can rise smoothly, while the lifting platform can drop only under the condition that the electromagnetic iron attracting assembly is energized and unlocked; and the inverted-type whole-process safety function is achieved, and the situation that serious safety accidents caused by high altitude falling off of a vehicle is avoided when a fault emergency situation is encountered.

The invention relates to a cantilever type intelligent parking garage. The cantilever type intelligent parking garage comprises a lifting sliding table mechanism, at least two vertical columns and driving mechanisms. The lifting sliding table mechanism comprises sliding frames and upper vehicle carrying plates; the vertical columns are vertically fixed to the ground and movably connected with thelifting sliding table mechanism; each driving mechanism is arranged between the corresponding two adjacent vertical columns, the lower ends of the driving mechanisms are fixed to the ground, the upperends of the driving mechanisms are connected with the sliding frames, and the driving mechanisms are used for driving the lifting sliding table mechanism to make lifting movement; the vertical columns are provided with sliding grooves, and the sliding frames are provided with upper sliding blocks and lower sliding blocks which are matched with the sliding grooves of the vertical columns; and insurance mechanisms are further arranged on the upper portions of the sliding frames, and insurance bars matched with the insurance mechanisms are arranged on the sides of the vertical columns. Comparedwith the prior art, the cantilever type intelligent parking garage is provided with the insurance mechanisms, therefore, the inverted whole course insurance function is achieved, and during the emergency situation, severe safety accidents can be avoided effectively; the vertical columns taking the sliding supporting effect and oil cylinders for driving are arranged separately, so that the structure is simple, mounting is convenient, and maintenance is facilitated; and the vertical columns and the oil cylinders are both generally arranged, and thus expanding can be conducted according to the requirements.

The invention discloses a turnout rotary charge-control electric cabinet for a mine. The turnout rotary charge-control electric cabinet comprises a cabinet body and a circuit control module which is used for controlling turnout rotary reversing. The circuit control module comprises a data acquisition module, a data processing module and a hydraulic driving module. The data acquisition module comprises a pressure detection unit, a first position detection unit and a second position detection unit. The hydraulic driving module comprises a hydraulic performing mechanism, a hydraulic control mechanism and a hydraulic power mechanism. The cabinet body is an anti-explosion cabinet body and comprises an upper cabinet body, a lower cabinet body and a rack. The rack is a sleigh type rack. The upper cabinet body is provided with a first wiring port and a second wiring port. The turnout rotary charge-control electric cabinet is simple in structure and reasonable in design, and complexity of manual operation is avoided, accurate reversing is ensured, the transport efficiency is improved, and serious safety accidents caused by not-in-place manual operation, misoperation and the like are avoided.

The invention discloses an explosion-proof compact pressure switch and a use method thereof. The explosion-proof compact pressure switch is characterized by comprising a shell, an electrical connectorand a process connector. The shell is a cuboid with a cylindrical cavity inside. The left end of the shell is connected to the process connector. The right side of the process connector is provided with a piston column inside the shell. The outer side of the piston column is sleeved by a shaft sleeve. The right side of the piston column is provided with an ejecting rod. The outer side of the ejecting rod is sleeved by a gasket and a spring. The right end of the shell is plugged into the electrical connector and positioned on the right side of the spring. A rivet cover is arranged on the rightside of the electrical connector and fixedly connected with the shell through the rivet. A switching element is arranged in the electrical connector. The switching element is connected with a lead tobe led out of the right end of the electrical connector. The piston column pushes the ejecting rod to move horizontally in the shell under the effect of pressure and compresses and releases the spring. When the pressure on the piston column reaches the switching threshold value, the ejecting rod is pushed to compress the spring to the right and close the switching element. The explosion-proof compact pressure switch is suitable for the hydraulic or pneumatic system with the flameproof requirement and has the advantages of compact and reasonable structure and safe and reliable use.

The invention belongs to the technical field of equipment lifting and discloses a device used for multi-lifting-point lifting. The problems that when existing methods are adopted for carrying out leveling operation of multi-lifting-point lifting, the labor intensity of operators is large, operation efficiency is low, and safety and reliability are low are solved. The device comprises four connecting rods, an oil cylinder and a hydraulic power unit. The four connecting rods are sequentially connected end to end to form a four-connecting-rod structure, and the oil cylinder is located in the four-connecting-rod structure. When the four-connecting-rod structure is placed in the vertical direction, the highest connecting point and the lowest connecting point in the four-connecting-rod structureare connected with an upper rope and a lower rope correspondingly, and the other two connecting points are connected with the two ends of the oil cylinder correspondingly. The hydraulic power unit isconnected with the oil cylinder and used for driving telescopic action of the oil cylinder. When the device is adopted for carrying out leveling operation of multi-lifting-point lifting, the labor intensity of the operators can be greatly reduced, operation efficiency can be improved, and safety and reliability in the operation process can be guaranteed.

The invention discloses a safety alarming type circulating gas guide valve. The guide valve comprises a left valve block and a right block valve block, and the left valve block and the right valve block are spliced left and right to form an integrity; a gas importing short tube is communicated with the center of the right end of the right valve block, a conical mobile block is arranged at the outlet of the left end of the tube body of the gas importing short tube, and a horizontal gas circulating channel is formed in the left side directly facing the conical mobile block, in the middle of theright side of the block body of the left valve block; a reset spring is further arranged on the left rod body of a guide sliding rod in a sleeving mode, the spring left end of each reset spring is fixedly arranged on the left wall of an inner cavity of a rectangular groove, the spring right end of each reset spring is fixedly arranged on the left wall surface of a sleeve body of a guide sliding sleeve, and an alarm is further arranged on the upper surface of the left valve block. The safety alarming type circulating gas guide valve solves the problem that traditional overpressure gas cannot beinformed and serious safety accidents can be caused, effectively guarantees the safety of workers and meets higher gas valve application requirements.

The invention discloses a mosaic nylon bearing shell apparatus of rare earth zinc steel strand. The mosaic nylon bearing shell apparatus of rare earth zinc steel strand includes a cradle, wherein a core-through shaft groove is formed in the cradle; a nylon bearing shell is arranged in the core-through shaft groove; the thickness of the nylon bearing shell can be increased to 10mm; the outer edge of the nylon bearing shell is provided with a bead which matches the outer edge of the core-through shaft groove; the lower part of the outer edge of the nylon bearing shell is locked and fixed by a steel disc; and the inner side of the nylon bearing shell is 10mm higher than the core-through shaft groove surface. For the mosaic nylon bearing shell apparatus of rare earth zinc steel strand, througha triple stability design method of the nylon bearing shell, even if the bearing shell is worn, the bearing shell can completely block occurrence of overturn and prevent the clamping and blocking situation between the core-through shaft and the cradle wall shaft groove so as to prevent occurrence of safety accident that a spool in the cradle flies out from the cylinder; and at the same time, thickening design is performed on the contact surface between the nylon bearing shell and the core-through shaft groove, thus prolonging the service life of the nylon bearing shell, significantly improving the proportionality of the line laying tension of the spool, and controlling the caused product quality problem that the steel strand becomes snake-shaped.

The invention belongs to the technical field of engines, and discloses an engine timing system and an engine timing control method. The engine timing system comprises a timing transmission belt, a crankshaft transmission wheel arranged on a crankshaft in a sleeving manner, a camshaft transmission wheel arranged on a camshaft in a sleeving manner, a first magnetic block arranged on the crankshaft transmission wheel or the crankshaft, a first sensor used for detecting the position of the first magnetic block, a second magnetic block arranged on the camshaft transmission wheel or the camshaft, and a second sensor used for detecting the position of the second magnetic block and used for judging whether the timing transmission belt has the tooth jumping fault or not according to the relative position of the crankshaft transmission wheel relative to the camshaft transmission wheel, wherein the timing transmission belt is wound around the crankshaft transmission wheel and the camshaft transmission wheel. The engine timing system can effectively recognize the rotation state of the crankshaft transmission wheel and the camshaft transmission wheel and is used for judging whether the timing transmission belt has the tooth jumping fault or not according to the relative position of the crankshaft transmission wheel relative to the camshaft transmission wheel.

The invention discloses a hydrogen leakage detection and control method of a hydrogen fuel cell vehicle and a system thereof. The detection and control method includes a start-up process control method, a driving process control method, and a parking state control method. The direct start mode and segmented start mode in the start process control method both detect the hydrogen leakage concentration HC, and when the concentration exceeds the safety limit H1, the IGN contactor will be disconnected, and the vehicle will fail to start. During the driving process, the hydrogen leakage concentration HC is detected in real time. When the concentration exceeds the safety limit H1, all hydrogen bottle valves are closed, the fuel cell is shut down, and the vehicle automatically switches to pure electric mode. During the parking process, the hydrogen leakage concentration HC in the medium will be detected regularly, and the data will be uploaded to TBOX when it is greater than the safety limit concentration H1. The invention has a hydrogen leakage detection and control strategy in the process of starting, driving and parking of the hydrogen fuel vehicle to ensure that the hydrogen concentration of the vehicle is in a safe state and avoid safety accidents caused by excessive hydrogen concentration.

The invention provides an overhead ground wire hanger. Through additionally arranging an inserting inlet channel, a guide outlet channel and a fixing chuck at the corner of the traditional lifting rope winding drum, the lifting rope is lifted to be fixed in a more stable state, happening of several serious safety accidents causes by falling in the case of winding only traditionally can be avoided,and the life and health safety of an electrician is protected; through additionally arranging an auxiliary guide frame plate, a vertical guide column, an upper elastic buffer spring and a lower elastic buffer spring, when a hook hangs a cable to walk upwardly, as an upper force applying connection rod and a lower force applying connection rod have the same rod lengths and the other ends of the two are together hinged onto a lifting seat, the lifting seat provides an acting force for the upper force applying connection rod and the lower force applying connection rod, an upper lifting guide sleeve and a lower lifting guide sleeve are driven under guide of the vertical guide column to move upwardly slowly, the lower elastic buffer spring is further pulled to generate elastic elongation deformation, and the upper elastic buffer spring is squeezed to generate elastic shortening deformation.

The invention relates to an automatic coal sliding hole anti-blocking device. The automatic coal sliding hole anti-blocking device comprises a control assembly, a first sleeve, a first roller, a second sleeve, a second roller and a fixed connecting cylinder, wherein the first sleeve, the first roller, the second sleeve, the second roller and the fixed connecting cylinder are arranged from top to bottom, the bottom end of the first sleeve is rotationally connected with the top end of the first roller, the bottom end of the first roller is rotationally connected with the top end of the second sleeve, the bottom end of the second sleeve is rotationally connected with the top end of the second roller, the bottom end of the second roller is rotationally connected with the top end of the fixed connecting cylinder, the outer side walls of the first roller and the second roller are fixedly connected with transmission steel belts in a sleeved mode, stirring protruding blocks are welded to the inner side walls of the first roller and the second roller, gear teeth are welded to the outer side walls of the transmission steel belts, and a gravity sensor is fixedly mounted on the inner side wallof the fixed connecting cylinder. The anti-blocking device can achieve the effect of preventing a coal outlet from being blocked, is high in automation degree, can achieve unmanned supervision and management, has repeatability, and can greatly avoid serious safety accidents.

The invention discloses a leakage alarm protection system for high-pressure hydrogen devices, and the system comprises a shell which covers a high-pressure hydrogen device, wherein the high-pressure hydrogen device is communicated with the external environment through an inlet and outlet pipeline; a plurality of hydrogen concentration detectors which are arranged in the shell, wherein the positions, arranged in the shell, of the hydrogen concentration detectors are different; and a PLC controller which is in communication connection with the plurality of hydrogen concentration detectors, and when at least one of hydrogen concentration values detected by the plurality of hydrogen concentration detectors is greater than or equal to a first threshold value, triggers a primary linkage alarm action. The invention further discloses a leakage alarm protection method for the high-pressure hydrogen devices. According to the present invention, the shell is arranged outside the high-pressure hydrogen device, leakage accidents of the high-pressure hydrogen device can be quickly found through the hydrogen concentration detectors at different heights, faults are relieved or eliminated in time through linkage alarm actions, and serious safety accidents are avoided.

The invention discloses a vapor drying cylinder siphon pipe damage online detecting method. The method includes the steps of a, setting three data storage units in a data storage area of an electric controller; b, collecting temperature sensor data through the electric controller at the interval of T seconds, calculating the average value, and storing the average value in a D(pre) data storage unit; c, continuing to collect temperature sensor data through the electric controller at the interval of T seconds, calculating the average value of the continuously-collected data, and storing the average value into a D(cur) data storage unit; d, comparing the value stored in the D(cur) data storage unit with the value stored in the D(pre) data storage unit; e, judging the accumulated value storedin a P(cou) data storage unit through the electric controller. The siphon pipe damage can be found in time and workers are reminded to instantly replace a damaged siphon pipe, it is effectively avoided that condensate water cannot be discharged, vapor consumption is reduced, drying efficiency is improved, and various accidents are avoided.