129 results about "Safety barrier" patented technology

The invention provides a reinforcement learning steering control method and system based on a safety barrier, electronic equipment and a storage medium, and relates to the field of automatic driving safety control. The method comprises the following steps: sensing current states of each participating object and a vehicle in an environment; respectively performing state estimation and future moment position prediction on the participating objects and the vehicle by applying Kalman filtering to obtain relative position probability distribution of each participating object and the vehicle in a plurality of steps in the future; calculating the collision probability of the vehicle and each participating object, and determining the overall collision risk according to the probability; the total collision risk is compared with a preset collision safety barrier threshold value, when the total collision risk is larger than the collision safety barrier threshold value, a safety barrier is triggered, candidate wheel turning angles are projected into an action set meeting safety constraints based on minimum change projection, and the projected wheel turning angles are issued and executed; if not, triggering is not conducted, and a reinforcement learning decision maker is adopted to output candidate wheel rotation angles and issue for execution.

The invention provides a dual-drive deepwater wellbore integrity failure risk evaluation method, and belongs to the technical field of deepwater drilling safety, and the dual-drive deepwater wellbore integrity failure risk evaluation method comprises the following steps: based on fault tree analysis in a bowknot model, identifying a wellbore integrity failure mode; constructing a differentiated evaluation path according to the failure mode, and quantifying a static equipment failure risk and a dynamic structure failure risk respectively; constructing a wellbore system-level failure probability model through a fault tree and Bayesian network dynamic mapping mechanism; based on event tree analysis, modeling is conducted on the safety barrier state after shaft integrity failure, accident consequences are deduced, and the occurrence probability of the accident consequences is calculated; and outputting the system-level failure probability, the key path contribution degree, the bottom event sensitivity sequence and the accident consequence probability, and solving the technical problem that the system-level failure risk is difficult to accurately predict and dynamically prevent and control because static empirical data and a dynamic mechanical mechanism are separated and cannot be coupled and updated in real time.

The invention discloses a GPS-free unmanned aerial vehicle autonomous navigation method based on multi-modal perception and reinforcement learning, and aims to solve the problem of obstacle avoidance failure caused by insufficient perceptibility of a transparent or reflective material. The method comprises the following steps: constructing a dual-channel occupancy graph containing an entity occupancy probability and a permeable layer probability, estimating a local plane normal in a suspected area and establishing an anisotropic safety barrier aligned with the normal, setting normal and tangential speed upper limits, combining safety reinforcement learning active verification and sensor parameter self-adaption, and cooperating with Bayesian updating and local path planning to obtain an anisotropic safety barrier. Reliable identification and safe detour of transparent or reflective obstacles are realized, the collision risk is reduced, and the robustness and stability of autonomous navigation in an environment without global satellite positioning signals are improved.

A method of erecting a multi-story building is disclosed.SOLUTION: During construction, at least part of the perimeter facade of the building is arranged to extend at least two stories high beyond the upper working area of the building and forms at least part of a safety barrier for that working area, and at least one further floor of the building is erected on top of the upper working area when erecting the multi-story building. The further floor forms a respective subsequent upper work area of the structure, and at least a part of the facade is arranged to extend at least one floor level above the top of the subsequent work area.SELECTED DRAWING: Figure 4

The utility model relates to the technical field of handrails, and discloses an intelligent safety handrail which comprises a bottom plate, supporting frames are welded to the two sides of the top surface of the bottom plate, lifting blocks are connected to the inner walls of the two sides in the supporting frames in a sliding mode, and handrail bodies are fixedly installed on the sides, close to each other, of the two lifting blocks. Through cooperation of a double-shaft motor, a transmission rod, a worm, a worm gear, a threaded rod and a lifting block, the height of the railing can be flexibly adjusted according to different scenes and requirements, diversified use requirements are met, the applicability of the railing is improved, and the surrounding environment can be monitored in real time through an intelligent electronic fence installed at the top of the railing body; the safety protection capacity is effectively improved, related personnel can be reminded to pay attention to abnormal conditions in time, site safety is guaranteed, lifting universal wheels are installed on the two sides of the bottom of the bottom plate, so that the handrail is convenient to move and fix, the flexibility of handrail deployment is greatly improved, and manpower and time cost is saved.

The utility model relates to a kind of coal gas blower speed measurement early warning device in the technical field of equipment monitoring, to solve the problem that speed measurement early warning device is poor in anti-interference, leading to inaccurate measurement, and there is no early warning and the measures of the stop of coal gas blower.The device converts the speed of gear into electrical signal by three speed probes, reduces the signal interference of environment using shielding layer and protection device box, improves the anti-interference of detection equipment, shielding layer is connected with transmitter and safety barrier in protection device through cable, multiple safety barriers are connected with PLC controller, flash alarm and bell, when detecting abnormal speed, flash alarm will emit light and bell will alarm, when PLC controller receives at least two probe over-limit signals and lasts 1-3 seconds, PLC controller will send interlock parking signal, control coal gas blower to stop running, meet the demand of safe and accurate monitoring, reduce economic loss.

The application discloses a public system safety switching method and system, and the method comprises the following steps: instantiating a total safety switching order application plug-in in all public system pictures in a unit generator set; the total safety switching order application plug-in judges whether the public system has a safety switching order by triggering a first safety application rule; the first safety application rule judges by associating picture attributes; instantiating a sub-safety switching order application plug-in in a public system picture in the unit generator set; the sub-safety switching order application plug-in judges whether the picture has a safety switching order by triggering a second safety application rule; and the second safety application rule judges by associating signal attributes. The application applies and releases the safety switching order in a two-stage control mode, adds two safety barriers for the public system, and improves the safety; and the combination of the total control and the sub-control makes the control more accurate.

Safe addressable firing controls positioned within a reusable housing that only allows voltage and current from the shooting panel to reach the explosive device by addressing the switch to open allowing electricity to pass through it and setting off the chain reaction during detonation, wherein the safe addressable firing controls positioned within a cartridge that creates a safety barrier between the surface equipment and a downhole tool, such as an explosive device.

The utility model belongs to the technical field of rail transit equipment, and relates to an integrated outer protective screen, a through channel device and a rail vehicle, the integrated outer protective screen is characterized in that a main body structure comprises a protective screen connecting clamp and a flexible body connected with the protective screen connecting clamp, one end of the protective screen connecting clamp is connected with the flexible body through a rivet, and the other end of the protective screen connecting clamp is connected with the through channel device. The main body structure of the flexible body comprises a base body formed by a plurality of pieces of single-ring shed cloth, fabric frames for fixing the adjacent single-ring shed cloth and vehicle body frames arranged at the two ends of the base body. The outer protection screen assembly is additionally arranged outside the vehicle end folding shed assembly, the attractiveness of the vehicle is enhanced, the wind resistance coefficient is reduced, energy consumption is reduced, meanwhile, the outer protection screen assembly forms an effective safety barrier, potential safety hazard parts are shielded, drivers and passengers and young and greedy passengers are actively prevented from falling off from a gap between the vehicle end and a platform, safety protection is formed, and the service life of the vehicle is prolonged. And the traffic safety of drivers and passengers when the train stops at the platform is ensured.

The utility model belongs to the technical field of fan maintenance equipment, particularly relates to a fan yaw clamp dismounting device, and provides the following scheme aiming at the problems of low operation efficiency, high safety risk and non-adjustable pulling direction of the existing dismounting device: the fan yaw clamp dismounting device comprises an arc-shaped dismounting frame, a fixing assembly, a tightening and stretching assembly and a protection assembly. The fixing assembly is used for fixing the whole device on an external positioning fulcrum such as a cable bridge; the tightening and stretching assembly is meshed with a driving gear on a U-shaped pulling plate through an arc-shaped rack on an arc-shaped dismounting frame, arc-shaped movement of the U-shaped pulling plate and a chain block on the U-shaped pulling plate can be achieved, and therefore stepless adjustment of the pulling angle of a clamp is achieved. The U-shaped pulling plate is further provided with an angle self-locking adjusting assembly, and the position of the U-shaped pulling plate is reliably locked through worm and gear transmission. The guard assembly provides a safety barrier. By means of the yaw clamp disassembling tool, multi-angle, safe and efficient disassembling of the yaw clamp is achieved, and operation safety and efficiency are remarkably improved.

This utility model relates to the field of construction safety protection technology and discloses a protective device for steel structure engineering that is easy to disassemble, including a main support plate with a reserved through slot. This easily disassembled protective device for steel structure engineering uses a self-locking motor to drive a bidirectional threaded rod to rotate, enabling the moving nut to slide smoothly and efficiently linearly, thereby driving the L-shaped side support plate to open and close quickly. During disassembly, activating the self-locking motor causes the L-shaped side support plate to move automatically outward, quickly detaching from the steel structure. The entire process requires no complex tools such as wrenches or screwdrivers, significantly shortening disassembly time and greatly improving construction efficiency. Simultaneously, the automated operation mode effectively reduces the physical exertion and operational difficulty for construction personnel. Furthermore, the motor's self-locking function, combined with a precision transmission structure, effectively resists interference from construction vibrations and external impacts, ensuring the protective device remains stable throughout operation and building a solid safety barrier for the construction site.

1. Name of the product in this design: Information Security Acquisition Equipment (Highway Safety Barrier). 2. Application of this design: This design is used as a vehicle information collection device for highway safety barriers. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model provides a water conservancy project construction cofferdam device belongs to water conservancy project equipment field, including the cofferdam, the one side of cofferdam is provided with a plurality of groups of cofferdam mechanism for isolating water flow, the sidewall of cofferdam is provided with a plurality of groups of buffer assembly of reducing the impact force to cofferdam. The utility model discloses a cofferdam mechanism, the fixed block is connected in screw thread after fixed bolt, and the cofferdam is vertically inserted along the positioning block through the positioning groove, and the bayonet of adjacent cofferdam is connected through the splicing plate, thereby blocking the water flow into the construction area, realizing quick installation and disassembly, when the water flow hits the buffer board, the buffer board is pushed after being pressed, and the L-shaped block and connecting rod, the connecting rod compresses the first spring, realizes energy absorption, the first spring resets after reaching the maximum compression amount, the connecting rod is pushed in reverse through the moving piece, makes the buffer board restore the initial position, avoids the direct impact of water flow to cofferdam, provides the safety barrier for the construction area.

This invention discloses a method for fire risk assessment of LNG storage tank areas based on Bayesian networks, comprising the following steps: S1, determining the initial accident tanks and fire scenarios in the LNG storage tank area, and calculating the intensity of thermal radiation generated by the fire; S2, determining the safety barriers set for each target tank, evaluating the performance parameters of each safety barrier, and calculating the failure probability of each target tank under thermal radiation; S3, constructing a Bayesian network model, and setting the conditional probability table for each node based on the failure probability of each target tank under thermal radiation; S4, determining the probability of a domino effect accident through forward reasoning of the Bayesian network; and identifying the most likely accident propagation sequence through backward reasoning of the Bayesian network, providing decision support for emergency response.

This utility model relates to the field of road safety barrier testing technology and discloses a rapid testing device for road safety barriers. This utility model solves the problem of repeatedly fixing and removing safety barriers when testing multiple barriers, where bolt fixing is cumbersome and time-consuming. The device uses a fixing component including a fixing frame, a support block, and two clamping blocks. The safety barrier component is placed on the upper end of the support block, and the testing component presses against the middle of the safety barrier component. The two ends of the safety barrier component exert force on the support block, causing the two clamping blocks to move towards each other and clamp the safety barrier component. The operation is simple and does not require manual adjustment of the clamping components. After testing, the safety barrier component is no longer under downward pressure, and the spring at the lower end of the support block exerts upward force on the support block, causing the two clamping blocks to move away from each other, thus releasing the fixation on the safety barrier component. It can be removed at any time and replaced with another set of safety barrier components to be tested.

The application discloses a precision contact type tool setting instrument for numerical control machine tools, which comprises a main base, a sliding rod and an electrode, wherein the sliding rod is in sliding connection with the main base, the sliding rod has a contact part and a mounting part, the contact part is used for contacting with a tool, and the mounting part is provided with the electrode; the sliding rod is slidably provided with a contact station and a non-contact station, when being located at the contact station, the electrode is turned on, and when being located at the non-contact station, the electrode is turned off. The application builds a physical or electrical redundant safety barrier outside a conventional trigger mechanism, can fundamentally prevent over-impact damage caused by signal failure or response delay, and greatly improves safety. The design ensures that the trigger process is always completed in a consistent small deformation range allowed by the measuring head, effectively avoids precision drift caused by excessive compression, and thus guarantees and improves long-term tool setting accuracy and stability.

The utility model provides a rear safety guardrail for truck, including guardrail body, two groups of reinforcing frame are symmetrically installed on one side of guardrail body, the top of reinforcing frame all is fixedly installed with the fixed plate that can be used for with truck bottom side fixed connection, one end of reinforcing frame all is equipped with the connecting groove, the inboard of connecting groove is connected with the sliding block through the damping block sliding, the one side of sliding block is fixedly installed with the connecting rod, one end of two groups connecting rod all is connected groove and is connected with one side of guardrail body fixedly. The utility model discloses the cooperation of fixed seat and slide rod can realize the stable installation of guardrail body in the truck rear, through the cooperation of reinforcing frame, sliding block and connecting rod, can realize increasing the overall strength of guardrail body, thereby realizes the protection performance of increasing guardrail body when the car and truck rear collision.

Astructure (12) for a movable security barrier (10) is provided. The structure (12) has an impact facing side (A) and a protection facing side (B). The structure comprises a first bollard support (46)

This application discloses an electrical control method and system for replacing cutting teeth in open-pit mining machines, belonging to the technical field of coal mining equipment. The electrical control method uses an operation box to control a motor to drive the cutting tooth drum to rotate, and then a controller operates a cutting tooth replacement tool to replace the damaged cutting tooth, replacing traditional manual operation. This significantly reduces the intensity of manual operation, shortens the replacement time for a single cutting tooth, and effectively improves replacement efficiency. Simultaneously, this method constructs a proactive safety barrier through a mandatory safety logic of "opening the toolbox triggers a sensor, the sensor transmits a first signal to the controller, and the controller responds and stops the mining machine." When the worker opens the tool storage box to prepare for cutting tooth replacement, the system automatically stops the mining machine, avoiding the risk of accidental drum rotation or component malfunction due to misoperation during traditional manual replacement, thus ensuring the personal safety of workers operating at close range.

A method of erecting a multi-storey structure is disclosed. During construction, at least a portion of a perimeter facade of the structure is disposed to extend at least two storeys height beyond an upper work area of the structure and forms at least part of a safety barrier for that work area and wherein in erecting the multi-story structure, at least one further floor of the structure is erected over the upper work area. The further floor forming a respective subsequent upper work area of the structure, and wherein at least a portion of the facade is disposed to extend at least one storey height beyond the uppermost of the subsequent work areas.

This utility model discloses an explosion-proof airflow control system and an explosion-proof exhaust cabinet. The explosion-proof airflow control system includes: a flameproof box with a first interface and a second interface, the flameproof box defining a flameproof cavity; a controller disposed in the flameproof cavity; a safety barrier disposed in the flameproof cavity, connected to the controller, and used for connection to an intrinsically safe explosion-proof device through the second interface; an explosion-proof airflow regulating valve including an explosion-proof actuator with a first cable; and an explosion-proof connector, the first cable passing through the explosion-proof connector and electrically connected to the controller through the first interface. This utility model uses a combination of a controller within a flameproof box and an explosion-proof airflow regulating valve, which not only balances explosion-proof safety and energy saving but also improves exhaust stability.

1. The name of the design product: Isolation safety fence. 2. The use of the design product: Protect the internal circuit board and mechanical components from the outside mechanical or electrical impact damage; while providing decorative function. 3. The design points of the design product: In shape. 4. The picture or photo that best indicates the design points: Perspective drawing.

The invention discloses a spraying hole locking type blowout preventer for coal mine gas control, which comprises an extraction pipe main body, the outer wall of the extraction pipe is sleeved with an outer sleeve, and the outer sleeve is in sliding connection with the extraction pipe main body; the expansion supporting mechanism comprises four sets of positioning plates, the positioning plates are parallel to the axis of the outer sleeve, the end of the outer sleeve is fixedly connected with a mounting plate, one end of each positioning plate is slidably connected to the side, away from the outer sleeve, of the mounting plate, and the end of the extraction pipe body penetrates through the mounting plate and is rotationally connected with a plurality of mounting rings; a plurality of expanding assemblies are arranged between the mounting ring and the positioning plate in the circumferential direction at equal intervals. The clamping assembly is mounted at the other end of the extraction pipe main body; the transmission assembly is fixed on the outer sleeve; a blocking air bag is installed on the outer wall of the outer sleeve. The problems that a traditional device is not firm in sealing and prone to failure are solved, and a stable safety barrier is built for gas extraction operation.

To provide a safety fence for on-site installation that allows temporary passage without cutting the wire mesh and can be easily restored to its original state. [Solution] An opposing frame 11 is provided on one support column 10, and a movable frame 12 is provided on the other support column 10, with mesh reinforcement 4 fitted into them. The opposing frame 11 has two parallel rails 11a and 11b fixed to it. On the other hand, the movable frame 12 has a fixed rail 13 and a swinging rail 14 arranged in parallel, with the fixed rail 13 fixed to the support column 1 and the swinging rail 14 swinging. Spacers 19 and 20a define the distance between the fixed rail 13 and the swinging rail 14 when their surfaces are in a parallel position. The fixed rail 13 and the swinging rail 14 are each provided with female screw holes and are connected by bolts 17. At this time, the bolts 17 pass through the grid of mesh reinforcement fitted into the movable frame 12.

This utility model relates to a safety protection device for a powder metallurgy press robot. The device includes a pair of lateral isolation fences. One side of each lateral isolation fence is mounted on a guide block, which is slidably connected to a guide post. The guide post is used to fix the robot to a corresponding frame near the press robot. Several lateral isolation fences are connected between the other sides of the two lateral isolation fences to form a protected area for the robot. Using this press robot protection device, the equipment can continuously, stably, and safely operate the robot. Because the protection device completely encloses the entire operating area of ​​the robot, compared with traditional floor-mounted safety barriers, it has the advantages of high safety, good flexibility, low cost, simple operation, and high practicality.

The utility model relates to the technical field of emergency sign lamps, in particular to an explosive-proof and intrinsic safety type emergency sign lamp which comprises an intrinsic safety cavity and an explosive-proof cavity, a lamp panel PCB is arranged in the intrinsic safety cavity, and a mainboard PCB is arranged in the explosive-proof cavity; an intrinsic safety circuit module is arranged on the lamp panel PCB; a safety barrier power supply module, a constant current control module, a step-down voltage stabilization module and a main control module are arranged on the mainboard PCB; the output negative electrode of each path of safety barrier power supply module is grounded; the constant-current control module is located at the front end of the safety barrier power supply module, the input end of the constant-current control module is connected with a direct-current bus, and the output end of the constant-current control module is connected with the input end of the safety barrier power supply module; and the intrinsic safety circuit module is connected with the safety barrier power supply module and is driven by the constant current control module. According to the invention, the problems that the explosion-proof and intrinsic safety type equipment generally comprises an explosion-proof cavity and an intrinsic safety cavity, the structure is complicated, and the cost and the volume are increased due to independent layout of multiple paths of safety barriers are solved.

The invention relates to the technical field of rail transit equipment, in particular to a rail transit platform screen door passenger protection device which comprises a fixing frame body, main door bodies are symmetrically arranged in the left side and the right side of the interior of the fixing frame body, anti-pinch doors are arranged in the main door bodies, one ends of the anti-pinch doors extend out of inner cavities of the main door bodies, and the other ends of the anti-pinch doors extend out of the inner cavities of the main door bodies. A speed control mechanism used for transmitting pressure so as to adjust the moving speed of the main door body is arranged in the main door body, a safety barrier is formed in advance through the anti-pinch door extending out of the main door body, passengers are prevented from being pinched by rigid closing of the main door body, and through pressure graded speed adjustment, on one hand, foreign matter deformation or door body structure damage caused by too large pressure is avoided; and meanwhile, more time can be reserved for closing the main door body, passengers or station service personnel can conveniently deal with stuck foreign matters, on the other hand, the operation efficiency loss caused by one-step deceleration is avoided, the hard extrusion injury is effectively avoided, and the safety of the device is further improved.

The invention provides an analog quantity safety barrier circuit, a safety barrier system and an industrial cabinet. The analog quantity safety barrier circuit comprises a safety side circuit and a danger side circuit which are electrically isolated through transformers, the danger side circuit comprises a first signal coupling unit and a second signal coupling unit, and the input ends of the first signal coupling unit and the second signal coupling unit receive signals from a safety side through corresponding signal transformers respectively; the input ends of the first rectifying and filtering unit and the second rectifying and filtering unit are correspondingly connected to the output ends of the first signal coupling unit and the second signal coupling unit respectively, and the power supply ends receive energy from the safety side through corresponding power supply transformers respectively; and the series boosting unit is configured to take the direct-current output voltage of the first rectifying and filtering unit as the reference ground potential of the second rectifying and filtering unit, so that the output voltages of the first rectifying and filtering unit and the second rectifying and filtering unit are connected in series and superposed to form a composite power supply for supplying power to a dangerous-side field transmitter. According to the analog quantity safety barrier circuit, the power consumption of the analog quantity safety barrier circuit can be reduced.