50 results about "Security engineering" patented technology

The invention provides a terminal security management system and management method, and relates to the technical field of security engineering. The terminal security management system comprises a hardware facility and a control end, the hardware facility comprises a control cabinet and a plurality of terminal devices installed in the control cabinet, the control cabinet is provided with an exhaust mechanism, the exhaust mechanism comprises an air outlet box, the two sides of the air outlet box are communicated with flow guide pieces, air channels are formed in the flow guide pieces, and the air channels are communicated with the air outlet box. The local part of the air channel is provided with a folding section, the inner side, facing the control cabinet, of the flow guide part is provided with a flow guide opening, and the flow guide opening is located between the two adjacent terminal devices; and an air inlet mechanism communicated with the flow guide part is arranged at the bottom in the control cabinet, a flow equalizing part is rotationally arranged in the air inlet mechanism, air is sucked from one side, facing the terminal equipment, of the flow guide part through a furling section on the air channel and a corresponding drainage opening by utilizing the Venturi effect, and heat energy at the position of the terminal equipment is dissipated.

The invention relates to the technical field of security engineering, and discloses a panoramic monitoring video cloud storage processing method and system, and the method comprises the steps: constructing a grading processing strategy set corresponding to multi-source panoramic video data, and a streaming processing rule engine and a value density scoring matrix of the grading processing strategy set; carrying out pre-transmission information reinforcement processing on a high-value event in the multi-source panoramic video data to generate an encrypted data stream of the multi-source panoramic video data; combining the space-time-behavior feature vector of the encrypted data stream with the global information atlas of the global monitoring front-end equipment, and setting a differential storage mode of the encrypted data stream; and finally, according to the hierarchical processing strategy set, the encrypted data stream and the differentiated storage mode, generating a cloud storage optimization scheme of the multi-source panoramic video data. According to the invention, the resource utilization efficiency of the panoramic monitoring video storage system can be improved.

The invention provides a system installation and deployment method and system based on engineering metadata, and relates to the technical field of software deployment, and the method comprises the steps: determining a software installation mode, and obtaining the engineering metadata; checking an installation environment based on preposition dependency information prompted by the engineering metadata; after the safety of the installation environment is ensured, performing signature verification and integrity verification on the software package based on the engineering metadata abstract and the signature information; after verification and verification are passed, the software package is installed on the basis of the component list of the engineering metadata, and the software package is configured on the basis of the information configuration list of the engineering metadata; and acquiring a security policy of the engineering metadata, activating a security protection function, generating installation engineering metadata after the security policy is completed, and evaluating the installation process based on the security engineering metadata.

The invention discloses a software vulnerability detection method based on a Transform architecture pre-training model, and the method comprises the steps: adding an adapter module on a self-attention matrix based on a base model; in the forward propagation process of the model, original parameters of the pre-training model are frozen, only parameters of an adapter are finely adjusted, and a loss function of the model is minimized; calculating a disturbance matrix in the SPSA method by using a reinforcement learning method so as to minimize a loss function of the detection model; and the parameters A and B are iteratively updated, so that the model learns finer representation. According to the method, an efficient parameter updating strategy is designed on the basis of the adapter, the adapted model is expected to show powerful performance in the field of vulnerability detection, and a reliable tool is provided for security engineers to efficiently and accurately identify and classify various potential risks in software.

The utility model relates to the field of intelligent security engineering, in particular to an induction type intelligent security engineering anti-theft alarm device which comprises an installation column used for installing the anti-theft alarm device. And the mounting frame is mounted outside the mounting column. According to the induction type intelligent security engineering anti-theft alarm device, through arrangement of the frame, the first fixing frame, the second fixing frame, the steel wire mesh, the protective glass frame, the smoke sensor and the infrared sensor, the anti-theft alarm device can be effectively protected and is prevented from being destroyed by external personnel arbitrarily, and the safety of the security engineering is improved. The protective glass frames are inserted into the first fixing frame and the second fixing frame on the upper side and the lower side of the frame, so that the smoke sensor and the infrared sensor are protected, meanwhile, the steel wire meshes are arranged in the first fixing frame and the second fixing frame, smoke circulation is not affected, and a certain protection effect is achieved; therefore, the problems that an existing device is exposed outside, poor in protection performance and prone to being damaged by other people are solved.

This utility model relates to the field of security monitoring technology and proposes a security monitoring device for security engineering, comprising: a monitoring pole and a support rod fixedly connected to the inner wall of the monitoring pole; a mounting block is fixedly connected to the top of the support rod, the mounting block has multiple mounting surfaces, multiple sets of connecting components are provided on the surface of the mounting block, a camera is provided on the surface of the connecting components, and a cooling chamber is opened inside the camera. This application has a reasonable structure. A self-priming booster pump allows external water to enter the distribution shell through a water injection pipe. Then, water enters the bottom of the cooling chamber through a cooling branch pipe, a water outlet connector, and a cooling pipe. The heat from the camera is conducted to the cooling chamber inside the metal shell and cooled by the water. Furthermore, this application allows for the installation of multiple cameras according to user needs, achieving comprehensive monitoring of the surrounding area without blind spots, while also cooling multiple cameras.

The utility model relates to the technical field of security engineering construction, in particular to a drilling device for security construction, which is safe to use and comprises a first U-shaped plate, a second U-shaped plate is arranged at the top of the first U-shaped plate, and a sliding rail and a two-way air cylinder are fixedly arranged on the surface of the first U-shaped plate and the surface of the second U-shaped plate respectively. The surfaces of the sliding rails are movably sleeved with supporting plates, and one ends of the two-way air cylinders are fixedly connected with the supporting plates. Through cooperation of the screw rod, the driving motor, the L-shaped plate, the one-way air cylinders and the installation plate, the drilling structure is installed on one side of the top of the screw rod in a threaded sliding mode, the L-shaped plate is installed on the first U-shaped plate through matching of the cross supporting column and the second U-shaped plate, and the drilling structure can be installed on the first U-shaped plate by adjusting the telescopic direction of the left-right two-way air cylinders. And the supporting plate can be driven to push the angle change of the cross supporting column, then lifting and transverse fine adjustment of the drilling structure on the L-shaped plate are achieved, and the drilling precision is improved.

The utility model relates to the technical field of security and protection monitoring, and discloses a security and protection monitoring device for security and protection engineering, which comprises a monitoring mounting plate and a monitoring mounting frame, four endpoints of the monitoring mounting plate are all provided with mounting holes, the side wall surface of the inner cavity of the monitoring mounting frame is fixedly connected with a driving motor, and the driving motor is fixedly connected with the monitoring mounting frame. The output shaft end of the driving motor is fixedly connected with a lead screw, the lead screw is slidably connected with a sliding block, the sliding block is fixedly connected with a connecting plate, the side wall face, away from the driving motor, of the connecting plate is fixedly connected with a pushing rod, the extending end of the pushing rod is fixedly connected with a monitoring installation block, and a security monitoring camera is installed on the front face of the monitoring installation block. According to the utility model, the driving motor drives the sliding block on the screw rod to slide, so that the mounting block on the connecting plate is driven to move, the security monitoring camera can be adjusted, the monitoring range can be expanded, air blown out by the air blower is blown out from the air outlet, dust on the security monitoring camera is blown off, and the safety of the security monitoring camera is improved. And the security monitoring camera is clearer.

The invention discloses a monitoring device for security engineering. The monitoring device comprises a data acquisition module, a data processing and fusion module, a threat modeling module, a parameter optimization module and a strategy generation module. The invention relates to the technical field of security and protection equipment, and provides a monitoring device for security and protection engineering. The method has the technical effects that the consumption of storage bandwidth resources is remarkably reduced, the equipment overload risk is avoided, the target identification robustness under the interference of rain, fog, sand and dust is enhanced, the false alarm rate is reduced, and the cross-equipment collaborative response real-time performance and the cross-regional tracking efficiency are improved.

The utility model is suitable for the technical field of security engineering wiring, and provides a fixing device convenient for security engineering wiring. The screw rod is rotationally mounted on the inner wall of the U-shaped frame; the sliding plate is arranged on the screw rod in a threaded and sleeving manner; the strip-shaped plate is fixedly mounted on one side of the sliding plate; the locking mechanism is arranged on the U-shaped frame, and the locking mechanism is used for locking the screw rod; and the plurality of cable fixing mechanisms are arranged on the strip-shaped plate, and the plurality of cable fixing mechanisms are used for fixing cables. According to the fixing device convenient for security engineering wiring, provided by the scheme, the cables can be conveniently fixed and disassembled, the fixing positions of the multiple cables can be adjusted, and the fixing device is suitable for the multiple cables with different wiring intervals.

The utility model relates to the technical field of monitoring supports, in particular to a monitoring support for security and protection engineering, which comprises a main support disc, a wall corner arranged on the left side of the main support disc, an elastic non-slip mat arranged between the main support disc and the wall corner, an embedded bolt column embedded in the wall corner, an anti-falling barb arranged on the embedded bolt column, and an elastic non-slip mat arranged between the main support disc and the wall corner. A support rod is arranged at the right end of the main support disc, a mounting base is connected to the support rod in a sliding mode, a security monitoring head is arranged on the mounting base, an adjusting clamping groove is formed in the support rod, a positioning pin is inserted into the mounting base, and a bearing frame is arranged at the lower end of the support rod. According to the monitoring support for the security and protection monitoring head, the security and protection monitoring head can be stably installed at the corner of the wall, the installation stability and anti-falling performance of the monitoring support are integrally improved, the flexibility of the monitoring support for the security and protection monitoring head for moving and adjusting the transverse position of the security and protection monitoring head is improved, and the situation that the security and protection monitoring head slides transversely at will is avoided.

The utility model belongs to the technical field of security engineering construction, and particularly relates to a wiring structure for security engineering construction, which comprises a wire protection shell. The interior of the wire protection shell is slidably connected with a line guide block. A threading hole is formed in the line guide block; a conical clamping ring is mounted in the threading hole; the bottom of the line guide block is connected with a servo motor; when a long cable is laid, the cable needs to be protected in all directions, so that the situation that the cable is broken due to falling of the cable due to dead weight is reduced, however, if a protection device is too long, cable laying is extremely difficult, and therefore the cable can be prevented from being damaged by sliding of a line guide block in a wire protection shell. And the cable is driven to pass through the long wire protection shell, so that the laying efficiency of the long cable is greatly improved, and the possibility that the long cable cannot work normally due to accidents is reduced.

The utility model relates to a security engineering practical training device, which comprises a console, a cabinet and a mounting wall, the console is fixedly connected with the cabinet side by side left and right, the right side of the cabinet is vertically and fixedly connected with the front side of the mounting wall, the front side of the console is flush with the front side of the cabinet, the lower end of the console is a workbench, and the workbench protrudes out of the front side of the console. The rear side of the cabinet protrudes out of the rear side of the console, and cable channels are arranged on the left and right sides of the cabinet. According to the utility model, open-type regional isolation is facilitated, modular management is realized, and practical training is facilitated.

The application belongs to the field of safety engineering in chemical industry production, and discloses a chemical process control system network risk analysis method based on multi-layer business process modeling and application, which comprises the following steps: analyzing the business process and data interaction relationship of the chemical process, and constructing a multi-layer business process model based on the BPMN2.0 standard; replacing the original device-centered method, an improved failure mode and consequence analysis centered on the basic business unit is proposed, the potential failure mode of the task is identified, the failure cause and consequence under different attack intentions are clarified, and the attack fault tree model is generated; finally, the risk analysis of the business activity is carried out. The application considers the role and importance of assets in the task execution process, can comprehensively cover the entire complete failure path under the integration of information security and functional safety, can more comprehensively identify the safety risks in each task link, and further improves the accuracy of risk analysis.

The utility model provides a wind-resistant monitoring frame for security engineering, and belongs to the technical field of security engineering monitoring. The wind-resistant monitoring frame for security and protection engineering comprises a monitoring frame structure and a wind-resistant structure. The monitoring frame structure comprises a base rod, a supporting rod and a connecting base, a T-shaped sliding groove is formed in the surface of the base rod, and the connecting base is fixed to the bottom of the base rod; and the wind-resistant structure comprises an extension rod, a sliding connecting piece and a supporting reinforcing piece, the sliding connecting piece is connected to the interior of the T-shaped sliding groove in a sliding mode, the other end of the extension rod is rotationally connected with a connecting block through a connecting column, and the supporting reinforcing piece is rotationally connected to the second notch. According to the utility model, the wind-resistant structure can be extended and stored to be beneficial to adapting to different environment requirements, meanwhile, the wind-resistant effect of the monitoring frame in the use process can be improved, the shooting stability is improved, the possibility of damage to shooting equipment is reduced, and the use is more flexible and convenient.

The invention relates to the technical field of code security detection, in particular to a source code security defect prediction method and system based on machine learning, and the method comprises the steps: generating an alarm data set, carrying out the feature extraction of each alarm in the alarm data set, and obtaining the alarm fingerprint of each alarm; performing multi-level matching on the alarm fingerprint of each alarm and a preset repair context fingerprint database to obtain a matching result and a matching certainty degree of each alarm; on the basis of a preset classification rule, automatically classifying newly generated alarms according to the matching result and the matching certainty degree to obtain a classification result; and outputting a classification result and a corresponding matching evidence, and carrying out adaptive optimization. According to the method, the efficiency and accuracy of processing source code security defects by security engineers can be remarkably improved.

This application relates to the field of building deformation detection technology, and discloses a method and system for detecting abnormal deformation in security engineering buildings, including the following steps: Step 1, embedding distributed optical fiber sensing elements inside the building to continuously acquire strain data within the building, and setting up Beidou high-precision positioning equipment around the building to continuously acquire the three-dimensional absolute coordinates of key building nodes; Step 2, constructing a mechanical coupling correlation model between local strain and overall displacement; Step 3, based on the continuously acquired strain data inside the building and the three-dimensional absolute coordinates of key building nodes, obtaining the building deformation rate and trend change rate through the mechanical coupling correlation model. By constructing a dual-modal synchronous sensing system of distributed optical fiber strain sensing and Beidou high-precision positioning, the spatiotemporal reference of multi-source data is unified, and a mechanical coupling correlation model between local strain and overall displacement is established.

The pipeline welding auxiliary equipment for security engineering construction comprises an encircling type frame body, a plurality of centering wheel sets are evenly distributed on the inner side wall of the encircling type frame body, a limiting check ring is fixed to the outer wall of the encircling type frame body, a connecting sleeve is connected to the buckling connecting position of the encircling type frame body in an inserted mode, and a clamping groove is formed in the outer wall of the encircling type frame body. A welding seam adjusting rod is arranged in the adjusting sleeve, an adjusting rod driven wheel is fixed to one side of the welding seam adjusting rod, an adjusting rod driving piece is arranged on the outer wall of the adjusting rod driven wheel, a welding gun clamping clamping base is arranged above the limiting check ring, and the welding gun clamping clamping base is connected with the limiting check ring through a mounting assembly. Rotary hinge seats are symmetrically arranged at the lower ends of the surrounding type frame bodies on the two sides, and telescopic supporting legs are arranged below the rotary hinge seats. The welding seam adjusting rod is matched with the connecting sleeve, a thread transmission mode is adopted, fine adjustment of the butt joint gap of the two pipelines can be achieved, the welding seam width can be controlled, and the welding seam width is uniform and consistent.

The utility model discloses a monitoring device for security engineering, which relates to the field of security engineering and comprises a vertical plate, a groove is arranged on the outer surface of the vertical plate, a motor is mounted in the vertical plate, the output end of the motor is connected with a screw rod extending into the groove, the outer wall of the screw rod is sleeved with a movable seat, and the movable seat is connected with the vertical plate. A supporting plate is arranged on the outer surface of the movable seat, and a lubricating assembly is arranged on the movable seat. Through the arrangement of the lubricating assembly, after lubricating oil in the oil storage cavity flows into the oil guide cavity through the oil leakage hole, the movable seat moves downwards and drives the ejector rod to move downwards, and at the moment, the spring rod extends to push the sealing plug to reset and move, so that the oil leakage hole is sealed by the sealing plug, and the lubricating oil is prevented from flowing out continuously; and lubricating oil in the oil guide cavity can flow into the oil discharge hole, the lubricating oil can flow to the surface of the lead screw along with continuous rotation of the lead screw and downward movement of the movable seat, so that the lead screw can be lubricated, and the lead screw can be quickly lubricated in the mode.

The present invention discloses a Secure Tropos-based method and system for generating multiple security requirements for a petroleum refining system. This method, which belongs to the field of security engineering, analyzes the dependencies and security threats between system functional modules involved in the entire process of a petroleum refining unit, targeting its security protection objectives. The method also analyzes the structure and data interaction types of the petroleum refining unit to establish a security entity and data interaction model. The method analyzes data flow and control flow characteristics to determine corresponding functional requirements, and derives security constraints based on the security protection objectives. The established security entity and data interaction model is then subjected to model checking, automatically generating an inspection report. The report content is then analyzed for security constraint violations to determine public and special security requirements. This invention can rapidly generate high-quality security requirements for petroleum refining units that meet functional requirements and relevant standards, significantly improving efficiency, effectiveness, and accuracy.

The utility model relates to the technical field of security engineering construction, in particular to a wiring structure for security engineering construction, which comprises a mounting block and a wiring mechanism for clamping and arranging cables, and the wiring mechanism is fixed on the mounting block. According to the utility model, through the arrangement of the wiring mechanism, a corresponding number of fixing seats are taken according to the number of cables, then clamping seats below the fixing seats are clamped on clamping rods, after all the fixing seats are installed, movable rods are driven to ascend, the movable rods drive movable plates and insertion rods to ascend, and the insertion rods ascend and are inserted into insertion holes in the clamping rods; after the fixing seat is installed, a pull rod is pulled upwards, the pull rod drives a second clamping block and a guide rod to ascend through a connecting rod, a spring is compressed, a cable is placed in a cable groove in the first clamping block, the pull rod is loosened, and the spring stretches to drive the second clamping block to descend; and the descending second clamping block is matched with the first clamping block to clamp and fix the cable.

The present invention relates to a method and system for verifying a vulnerability detection process, wherein the method includes: obtaining configuration parameters of a test project; generating a list of function points based on source code in a test project parameter group; intercepting a mirror data packet of the test request when a security engineer sends a test request for a function point of the test project through a test-side browser according to the detection process; performing vulnerability detection on the function point based on the mirror data packet according to a preset detection strategy, and recording the detection results of the function point to generate a detection result list; in response to a detection process end request, comparing the detection result list with the function point list; and in response to the detected function points in the detection result list not covering the function points in the function point list, prohibiting the end of the detection process. The present invention can ensure full-scale detection of all function points, thereby ensuring the comprehensiveness and accuracy of the vulnerability detection results.

The utility model provides a fixing device for monitoring equipment, and belongs to the technical field of security engineering. The fixing device for the monitoring equipment comprises a first fixing frame and a second fixing frame, the second fixing frame is connected to the first fixing frame in a bolted mode, a mounting frame is fixedly connected to the first fixing frame, a first through hole is formed in the bottom of the mounting frame, a sliding seat is fixed in the mounting frame, and a second through hole is formed in the bottom of the sliding seat. Two symmetrical guide rails are arranged in the sliding seat, first sliding blocks are slidably connected to the guide rails, first mounting plates are fixedly connected to the two first sliding blocks, and monitoring equipment is detachably connected to the bottoms of the first mounting plates; and a second mounting plate is arranged at the front end of the mounting frame, driving motors are symmetrically connected to the second mounting plate, lead screws are in transmission connection to output shafts of the driving motors, and the lead screws are connected with the first sliding blocks. The fixing device has the advantage of being convenient to fix.

The invention discloses a Secure Tropos-based method and system for generating multiple safety requirements of a petroleum refining system, and belongs to the field of safety engineering.The method comprises the following steps: aiming at a safety protection target of a petroleum refining device, analyzing a dependency relationship and a safety threat among system function modules involved in the whole process of the petroleum refining device; analyzing the structure and the data interaction type of the petroleum refining device, and establishing a security entity and a data interaction model; analyzing data flow and control flow features, determining corresponding function requirements, and deducing security constraints in combination with a security protection target; and carrying out model inspection on the established security entity and data interaction model, automatically generating an inspection report, and carrying out security constraint violation analysis on report content to respectively obtain a public security demand and a special security demand. The method can be used for quickly generating high-quality safety requirements meeting functional requirements and related standards for the petroleum refining device, and the efficiency, the effect and the accuracy are greatly improved.

The invention discloses a vulnerability repair priority evaluation method, system and device and a storage medium, and the method comprises the steps: collecting vulnerability CVSS and EPSS scores, and carrying out normalization and discrimination enhancement processing; based on enterprise risk preference and asset exposure degree, respectively setting weights of CVSS and EPSS scores; performing weighted summation to obtain a vulnerability repair priority score; performing adaptive adjustment on the vulnerability repair priority score according to the vulnerability real-time influence; performing overall priority correction on the vulnerability repair priority score after self-adaptive adjustment in combination with a service scene, asset importance, historical processing conditions of vulnerabilities of the same type and a vulnerability introduction path length; and grading the vulnerabilities based on the vulnerability repair priority score after priority correction, and executing corresponding responses to different levels of vulnerabilities. According to the method, vulnerability management is changed from experience dependence to large-scale security engineering.

The utility model discloses a kind of fixing devices for security engineering wiring, it is related to security engineering wiring tool technical field, to solve the angle fixed of existing fixing device, the problem that it is difficult to adapt complex scene. The device includes first support rod and second support rod, both are connected by adjusting mechanism, second support rod top is equipped with mounting mechanism. In adjusting mechanism, rotating shaft realizes the relative rotation of two bars, pull strip drives the upward movement of limiting rod to make ratchet disengage from ratchet adjustable angle, spring reset lets ratchet be clamped into ratchet complete locking, right-angle limiting block and transverse limiting strip limit excessive rotation;Mounting mechanism is positioned by clamping pin and clamping hole, bolt tight fixing sleeve gap realizes cable stable clamping. The device can flexibly adjust angle, adapt corner, bevel and other scenes, avoid cable excessive bending, improve wiring flexibility and efficiency.

The utility model relates to the field of security and protection devices, and discloses a single-shaft turntable for precisely measuring workpiece control, which comprises a first support rod, a second support rod is slidably connected in the first support rod, a lifting mechanism is arranged on the side wall of the first support rod, and an adjusting mechanism is arranged on the side wall of the second support rod; the lifting mechanism comprises an outer frame, the outer frame is fixedly connected to the side wall of the first supporting rod, a first rotating shaft is rotatably connected to the interior of the outer frame, a first gear is fixedly connected to the exterior of the first rotating shaft, and a rack is fixedly connected to the side wall of the second supporting rod. According to the monitoring frame for the security and protection engineering, the second supporting rod slides in the first supporting rod through the rack, the height of the second supporting rod is adjusted, the problems that when the monitoring frame for the security and protection engineering is used, most structures are fixed, and the use height is inconvenient to adjust are solved, and through the structure, the height of the second supporting rod is adjusted; and the monitoring range is expanded.

The utility model belongs to the technical field of engineering ladders, and particularly relates to a portable safety engineering ladder which comprises a main ladder and a limiting device, the surface of the main ladder is rotatably connected with a supporting plate, and the inner wall of the supporting plate is rotatably connected with an auxiliary ladder; limiting devices are arranged on the surfaces of the main ladder and the auxiliary ladder and comprise main sleeves and auxiliary sleeves, the surfaces of the main ladder and the auxiliary ladder are sleeved with the main sleeves and the auxiliary sleeves respectively, rotating rods are rotationally connected to the two sides of the main sleeves and located on the surfaces of the auxiliary sleeves, inserting columns are slidably connected to the positions, close to the rotating rods, of the inner walls of the sleeves, and auxiliary devices are arranged on the two sides of the main ladder and the auxiliary ladder; the auxiliary device comprises a supporting block, the side wall of the supporting block is fixedly connected with the side wall of the main ladder, the surface of the supporting block is rotationally connected with a storage rod, and the inner wall of the storage rod is in threaded connection with a threaded rod; the abrasion between the main ladder and the auxiliary ladder can be reduced by arranging the main sleeve and the auxiliary sleeve, and the angle between the main ladder and the auxiliary ladder can be limited by the rotating rod and the inserting column, so that the stability during use is improved.

The utility model relates to the technical field of security engineering, and discloses an intelligent security door for security engineering, which comprises a door frame and a door body, one side of the door body is slidably provided with a sealing door, the sealing door is fixedly connected with mounting seats which are symmetrically arranged, the inner sides of the mounting seats are provided with movable grooves, and the movable grooves are fixedly connected with the door frame. A limiting clamping block of a wedge-shaped structure is slidably arranged on the inner side of the movable groove, a spring is installed on the inner wall of one side of the movable groove, and one end of the spring is connected to the outer wall of one side of the limiting clamping block. The sealing door is opened in an upward moving mode, the situation that the sealing door is pulled backwards and occupies indoor space is avoided, when a user pulls the sealing door to move upwards, the sealing door drives the mounting base to move upwards till the connecting plate is inserted into the connecting notch formed in the mounting base, at the moment, the connecting plate extrudes the limiting clamping block, and the sealing door is prevented from being pulled backwards. And when the limiting groove formed in the connecting plate is located in one side of the limiting clamping block, the limiting clamping block can be pushed into the limiting groove under the action of the spring, and the limiting effect on the mounting base is achieved.

The utility model discloses a warning board for security engineering maintenance in the technical field of security engineering maintenance equipment, which comprises a bottom plate and a support frame, the support frame is arranged at the top of the bottom plate, the support frame is fixedly connected with the bottom plate, a fixing ring is arranged at the top of the support frame, the fixing ring is fixedly connected with the support frame, an adjusting rod is arranged in the fixing ring, and the adjusting rod is fixedly connected with the bottom plate. An adjusting ring is arranged at the top of the fixing ring, the adjusting ring is in threaded connection with the adjusting rod, the adjusting ring is in sliding connection with the fixing ring, handles are arranged on one side of the adjusting rod, the number of the handles is four, a limiting groove is embedded in the surface of the adjusting rod, a limiting block is arranged on the inner side of the fixing ring, and the limiting block is in sliding connection with the limiting groove. Through the supporting frame, the fixing ring, the adjusting rod, the adjusting ring, the handle, the limiting groove and the limiting block, the height adjusting function of the warning board is achieved, the adjusting ring is driven to rotate by rotating the handle, and therefore the adjusting rod is driven to ascend and descend in the fixing ring, and the height of the warning board can be adjusted.