184 results about "Safety barrier" patented technology

A safety barrier system including a plurality of barrier assemblies, each barrier assembly having a barrier panel assembly including a rectangular barrier mesh supported by an upper edge binding member, a lower edge binding member, a pair of left stiffeners and a pair of right stiffeners wherein the pair of left stiffeners capture a left edge of the rectangular barrier mesh and the pair of right stiffeners capture a right edge of the rectangular barrier mesh. Each barrier assembly includes a barrier support pole having an upper pole end, a lower pole end opposite the upper pole end, the lower pole end engageable with a ground insert for allowing rotation of the barrier support pole and opposing first and second retention slots, each of the first and second retention slots extending from the upper pole end to the lower pole end, the first retention slot parallel to the second retention slot. Each barrier assembly includes a top cap for engaging the upper pole end and securing at least one of the pair of left stiffeners or the pair of right stiffeners in one of the first or second retention slot and a panel stop engaged with the first and second retention slot along a lower portion of the barrier support pole, the panel stop for supporting the lower edge binding member of the barrier panel assembly.

The invention discloses an end-to-end unmanned aerial vehicle obstacle avoidance system and method based on visual Transform and probability planning. The system comprises a visual perception coding module, a trajectory dynamic coding module, a probability planning decision module and a control instruction generation module. The environment is perceived through a depth image sequence, and the trajectory is modeled in combination with Fourier position coding, so that accurate planning and control of the flight trajectory of the unmanned aerial vehicle are realized. According to the invention, a cross attention mechanism is adopted to fuse environmental information and trajectory features, a safety barrier function is designed to ensure flight safety, lightweight deployment is realized through knowledge distillation and model quantification acceleration, the autonomous navigation capability of the unmanned aerial vehicle in a complex dynamic environment is significantly improved, and the real-time requirements of low delay and low power consumption are met.

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 safety barrier for an independent cart system includes a housing with a base and an indicia portion extending from the base. The indicia portion provides a visual indication of a present location for the housing. A magnet is mounted within the base of the housing, and the magnet generates a sensor magnetic field. A sensor is mounted at a fixed location along a track for the independent cart system, and the sensor generates a feedback signal corresponding to the sensor magnetic field. A controller is operative to inhibit travel of a mover at the fixed location along the track when the feedback signal indicates the magnet is proximate the sensor.

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 invention discloses an anti-leakage intelligent monitoring double-layer casing pipe, assembling equipment and an assembling method thereof, and relates to the technical field of nuclear facility or chemical equipment matching, the anti-leakage intelligent monitoring double-layer casing pipe comprises an inner pipe and an outer pipe, the outer pipe is arranged on the outer side of the inner pipe in a sleeving mode, and multiple sets of supporting rings are arranged between the inner pipe and the outer pipe at equal intervals; the multiple sets of supporting rings are connected with the inner pipe. A monitoring device is arranged on one side of the outer pipe and used for monitoring leakage of the inner pipe. The assembling equipment comprises a supporting and guiding assembly, a welding assembly, an inner pipe milling cutter, an inner pipe ironing plate, an outer pipe milling cutter and an outer pipe ironing plate. The assembling method comprises the steps of preparation, inner pipe butt joint and appearance butt joint. A single safety barrier is upgraded into a double-independent safety barrier by arranging a double-layer sleeve structure formed by combining the inner pipe and the outer pipe.

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.

The utility model discloses an electric engineering steel wire mesh protection structure which comprises a peripheral frame and a rectangular vertical arm fixed to the outer wall of one side of the peripheral frame, positioning columns are arranged at the upper end and the lower end of the rectangular vertical arm, and a steel wire mesh body is installed in the peripheral frame. The top end and the bottom end of the rectangular vertical arm are each provided with an elastic ejection structure connected with the corresponding positioning column, and two symmetrical right-angle frames are installed on the outer wall of the other side of the peripheral frame. The protection height and density can be increased through multi-layer stacking, the occurrence probability of accidental falling events is reduced, particularly under the condition of high-altitude operation or using of heavy equipment, the multi-layer structure provides a more reliable safety barrier, the life safety of constructors is effectively protected, and the safety of the constructors is improved. And through the use of a positioning column, an elastic ejection structure, a right-angle frame, a butt bolt structure and other structures, the multi-layer structure can keep better stability when facing strong wind, severe weather or external impact.

An apparatus for providing a barrier between a first rail car and a second rail car connected to the first rail car by a coupling includes a support assembly and a brush member. The support assembly includes a holding member, and is configured to be mounted on the first rail car. The brush member has a spine and a plurality of bristles extending from the spine. The spine of the brush member is received by the holding member of the support assembly such that the plurality of bristles occupy space above the coupling when the support assembly is mounted on the first rail car, thereby forming the barrier.

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 present application relates to oilfield completion and oil production technical field, provide a kind of offshore shale oil high pressure small hole completion safety barrier process pipe column, comprising: outer pipe column, inner pipe column;Outer pipe column includes permanent packer, bushing sliding sleeve;Inner pipe column includes sequentially connected positioning back insertion seal, hydraulic switch tool;Before oil production, bushing sliding sleeve is closed state before outer pipe column is inserted into well, realize the high pressure plugging to entire wellbore;When oil production, inner pipe column is back inserted into outer pipe column, and the positioning back insertion seal of inner pipe column is positioned to the rear of permanent packer, and the bushing sliding sleeve in closed state is opened by the way of ball pressure through hydraulic switch tool, establishes oil production passage.The present application not only plays the role of shale oil high pressure safety barrier, provides security guarantee for subsequent upper completion construction operation, but also facilitates later oil production operation, effectively solve the problem that shale oil reservoir exploitation small hole high pressure well requires high reliability to downhole safety barrier.

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 security barrier (10, figure 1) comprises a support (14, figure 1) and a barrier member (12, figure 1) which is pivotable relative to the support between a stowed position and a deployed position about a horizontal barrier pivot axis 15. The support has an upper part for positioning, in use, substantially at ground level, and the barrier pivot axis is substantially at the upper part. A main drive device 34 is operable to provide said pivotable movement of the barrier member relative to the support via an actuation device 33 having at least one pivotable member 40 which is pivotable about a respective axis of rotation parallel to the barrier pivot axis. Also disclosed is a main drive device for lifting and / or rotating a barrier member of a security barrier, an auxiliary drive unit for a security barrier having a main drive device and a method of operating a security barrier comprising a support and a barrier member.

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.

The utility model relates to the technical field of forge pieces, and discloses a long-life high-sealing forge piece which comprises a forge piece body, fixing rings are integrally formed at the top and the two ends of the forge piece body, mounting holes are formed in the surfaces of the fixing rings, lantern rings are integrally formed on the surface of the forge piece body, threads are formed in the inner walls of the mounting holes, and the mounting holes are communicated with the lantern rings. An annular protrusion is integrally formed on the surface of the fixing ring, a first groove is formed in the surface of the annular protrusion, and a fixing sleeve is integrally formed between the fixing ring and the surface of the forge piece body. The forge piece is integrally formed by the forge piece body, the fixing ring and the lantern ring, the sealing rings are placed in the first groove and the second groove, double insurance is formed, the forge piece is fixed through the multiple installation holes, the forge piece and a pipeline are prevented from loosening, and the purposes of long service life and high sealing performance can be achieved; the sealing performance and the service life of the forge piece are improved, the maintenance amount is reduced, and potential safety hazards are reduced.

The invention provides an AGV (Automatic Guided Vehicle) collision detection method based on a dual-look-ahead sweeping area, which comprises the following steps of: monitoring a surrounding environment in a forward running process of an AGV in real time by utilizing radar point cloud so as to judge whether an obstacle exists or not; when the obstacle is monitored, according to the relative position relation between the obstacle and the AGV, a differential obstacle avoidance strategy is executed, the differential obstacle avoidance strategy is achieved based on a double-look-ahead sweeping area, and the double-look-ahead sweeping area comprises a stop area and a deceleration area; according to the real-time speed and the safety threshold value of the AGV, the look-ahead distance and the safety margin of the stop area and the deceleration area are dynamically adjusted; and triggering the AGV to execute deceleration or emergency stop action according to the adjusted relative position of the dual-look-ahead sweeping area and the obstacle. According to the invention, by establishing a double-swept area algorithm, an independent two-stage safety barrier system of a stop area and a deceleration area is established, and differential safety threshold configuration matched with an area function is combined, so that safe obstacle avoidance of the AGV in an operation process is realized.

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.

The utility model relates to an intrinsic safety audible and visual alarm, which comprises a frequency control module, a step-down circuit, a safety barrier, a buzzer, an alarm lamp and a shell, and is characterized in that the frequency control module, the step-down circuit, the safety barrier, the buzzer and the alarm lamp are all arranged in the shell, and the frequency controller, the step-down circuit and the safety barrier are encapsulated in an encapsulation material; the input end of the safety barrier is connected with the connector, the connector is connected with power supply voltage, and the output end of the safety barrier is connected with the step-down circuit, the buzzer and the alarm lamp; the step-down circuit is used for reducing power supply voltage into working voltage of the frequency control module; and the frequency control module is connected with a buzzer and an alarm lamp. According to the utility model, double voltage stabilization measures are provided, the grade of intrinsic safety requirements is met, the non-intrinsic safety part and the safety barrier are all encapsulated, only the intrinsic safety part is exposed outside the encapsulating material, and the shell is used for protection, so that the whole machine is high in safety coefficient and good in durability.

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)