Reinforced security fence
By introducing infrared ranging sensors and servo motor-driven release components into reinforced security guardrails, the potential injury problem when security personnel climb over them is solved, achieving safe and rapid climbing and improving the practicality of security guardrails.
Patent Information
- Application Number
- CN202522195054.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-17
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-10-17
AI Technical Summary
Existing reinforced security barriers can easily injure personnel when they climb over them, and also affect the efficiency of emergency rescue and drills.
Design a reinforced security guardrail that uses an infrared ranging sensor and a servo motor-driven release component. Through the retraction of the barbs and the cooperation of the limit posts, it ensures that security personnel can safely climb over.
It effectively prevents unauthorized personnel from crossing the border, while ensuring the safe and rapid crossing of security personnel when authorized, reducing detour time and improving the efficiency of emergency rescue and drills.
Smart Images

Figure CN224943553U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of security guardrail technology, and in particular to a reinforced security guardrail. Background Technology
[0002] Security fencing is a physical isolation facility with security protection as its core function. It is mainly used to delineate the boundaries of specific areas, prevent unauthorized entry or crossing, prevent potential security threats, and form a protective barrier for personnel, property, and important facilities. Through structural design and material characteristics, combined with environmental requirements, it achieves safe control of specific spaces and is an important component of public safety and security systems.
[0003] However, existing reinforced security fences typically use numerous barbs fixed to the top of the fence to prevent unauthorized individuals from climbing over. While these barbs prevent unauthorized individuals from climbing over the fence, when authorized security personnel need to do so, such as in emergency rescues, preventing serious crimes, or during drills and training, they must quickly climb the fence to minimize detour time and avoid tragedies. However, the barbs on the fence still pose a significant danger when authorized security personnel climb over it, easily injuring them or even preventing them from climbing over and hindering emergency medical services. Utility Model Content
[0004] The problem this invention aims to solve is to provide a reinforced security fence that can be climbed over by security personnel.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a reinforced security guardrail, including a guardrail body, a monitoring plate slidably connected to the inner wall of the guardrail body, eight barbed bodies slidably connected to the inner wall of the monitoring plate, an infrared ranging sensor fixedly connected to the inner top wall of the monitoring plate, an alarm fixedly connected to the back of the guardrail body, the alarm being electrically connected to the infrared ranging sensor via a wire, and a release component being provided inside the guardrail body.
[0006] Preferably, the release assembly includes a bidirectional screw, both ends of which are rotatably connected to the inner wall of the guardrail body. A servo motor is fixedly connected to the inner wall of the guardrail body, and a first bevel gear is fixedly connected to the output end of the servo motor. A second bevel gear is meshed with the outer surface of the first bevel gear, and the inner wall of the second bevel gear is fixedly connected to the outer surface of the bidirectional screw. A fixing plate is fixedly connected to the bottom surface of each set of barbed bodies, and a slanted block is fixedly connected to the front and back of each fixing plate. Two top blocks are threadedly connected to the outer surface of the bidirectional screw, and the outer surface of each top block contacts the outer surface of the slanted block. The outer surface of each top block is slidably connected to the inner wall of the guardrail body.
[0007] Preferably, each of the top blocks has two limiting posts fixedly connected to its inner wall, and the bottom surface of the monitoring plate has four limiting blocks fixedly connected to it.
[0008] Preferably, four springs are fixedly connected to the bottom surface of the monitoring plate, and the bottom end of each spring is fixedly connected to the inner bottom wall of the guardrail body.
[0009] Preferably, two positioning blocks are fixedly connected to the bottom surface of the guardrail body, and each positioning block has four positioning holes on its upper surface.
[0010] Preferably, a fixing frame is fixedly connected to the front of the guardrail body, and a warning plate is fixedly connected to the inner wall of the fixing frame.
[0011] The advantages and beneficial effects of this utility model are: This invention utilizes a release assembly consisting of a bidirectional screw, a servo motor, and a top block, linked with an infrared ranging sensor and an alarm. This assembly maintains the protective function of the barbs in unauthorized situations, effectively preventing unauthorized personnel from climbing over. Simultaneously, when authorized security personnel attempt to climb over in an emergency, a trigger mechanism quickly retracts the barbs, eliminating potential harm to the personnel. This solves the drawbacks of traditional barbed railings, ensuring that security personnel can safely and quickly climb the railing in scenarios such as emergency rescue, prevention of major crimes, or drills, reducing detour time and avoiding delays in emergency treatment due to barbs.
[0012] This invention uses an infrared ranging sensor to monitor the distance between the monitoring plate and the guardrail body in real time. When unauthorized personnel climb over the monitoring plate, the monitoring plate will move downward to reduce the distance between them, thereby triggering an alarm or adjusting the barbs in a timely manner. The cooperation between the limiting post and the limiting block allows the limiting post on the top block to insert into the limiting block when the top block moves to the sides and retracts the barbs, thus supporting and limiting the monitoring plate and preventing alarms from being triggered when security personnel climb over it. This not only enhances the timeliness of security but also provides a guarantee for the safe operation of authorized personnel, effectively balancing the security function of the guardrail with the emergency passage requirements, and significantly improving its practical value in complex scenarios. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the guardrail body of this utility model; Figure 3 This is a schematic diagram of the release component of this utility model; Figure 4 This is a schematic diagram of the top block structure of this utility model.
[0014] In the diagram: 1. Guardrail body; 2. Monitoring plate; 3. Barb body; 4. Infrared ranging sensor; 5. Alarm; 6. Release component; 601. Bidirectional screw; 602. Spring; 603. Fixing plate; 604. Inclined block; 605. Servo motor; 606. First bevel gear; 607. Second bevel gear; 608. Limiting block; 609. Top block; 610. Limiting post; 7. Positioning block; 8. Positioning hole; 9. Fixing frame; 10. Warning plate. Detailed Implementation
[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0016] like Figures 1 to 4 As shown, a reinforced security fence includes a fence body 1, which is the main component of the security fence and is used to provide basic protective functions.
[0017] The inner wall of the guardrail body 1 is slidably connected to a monitoring plate 2. The monitoring plate 2 can sensitively sense the contact between external objects and the guardrail, and can also provide support.
[0018] The inner wall of the monitoring plate 2 is slidably connected with eight barbed bodies 3. These barbed bodies 3 are in an extended state when not triggered, in order to prevent unauthorized climbers.
[0019] An infrared ranging sensor 4 is fixedly connected to the inner top wall of the monitoring plate 2. This sensor can accurately measure the distance change between the monitoring plate 2 and the guardrail body 1, thereby determining whether there is any climbing behavior.
[0020] An alarm 5 is fixedly connected to the back of the guardrail body 1. When the infrared ranging sensor 4 detects an abnormal distance change, it will immediately trigger the alarm 5 and issue an alarm signal to ensure the timeliness and accuracy of signal transmission.
[0021] The guardrail body 1 has a release component 6 inside.
[0022] The release component 6 includes a bidirectional screw 601, both ends of which are rotatably connected to the inner wall of the guardrail body 1. A servo motor 605 is fixedly connected to the inner wall of the guardrail body 1. A first bevel gear 606 is fixedly connected to the output end of the servo motor 605. A second bevel gear 607 is meshed with the outer surface of the first bevel gear 606. The inner wall of the second bevel gear 607 is fixedly connected to the outer surface of the bidirectional screw 601. A fixing plate 603 is fixedly connected to the bottom surface of each set of barbed bodies 3. An inclined block 604 is fixedly connected to the front and back of each fixing plate 603. Two top blocks 609 are threadedly connected to the outer surface of the bidirectional screw 601. The outer surface of each top block 609 is in contact with the outer surface of the inclined block 604. The outer surface of each top block 609 is in contact with the outer surface of the guardrail body 1. The inner wall is slidably connected. When the servo motor 605 is started, its power output end drives the first bevel gear 606 to rotate. The first bevel gear 606 then drives the second bevel gear 607, which meshes with it, to rotate. Since the second bevel gear 607 is fixedly connected to the outer surface of the bidirectional screw 601, the bidirectional screw 601 will rotate accordingly. The rotation of the bidirectional screw 601 will drive the two top blocks 609 to move to both sides along their thread direction. Since the outer surface of the top block 609 is in contact with the outer surface of the inclined block 604, the movement of the top block 609 will separate it from the inclined block 604. Under the action of gravity, the inclined block 604 will descend and its connected fixing plate 603 and barbed body 3 will retract inward, thereby releasing the extended state of the barbed body 3 so that it will not cause injury to the security personnel climbing over it.
[0023] Two limiting posts 610 are fixedly connected to the inner wall of each top block 609, and four limiting blocks 608 are fixedly connected to the bottom surface of the monitoring plate 2. When security personnel climb over the guardrail, the monitoring plate 2 will be subjected to downward pressure. At this time, the limiting posts 610 will be inserted into the limiting blocks 608 to support and limit the movement, preventing the monitoring plate 2 from triggering an alarm due to excessive pressure, thereby ensuring the safe climbing of security personnel.
[0024] Four springs 602 are fixedly connected to the bottom surface of the monitoring plate 2. The bottom end of each spring 602 is fixedly connected to the inner bottom wall of the guardrail body 1. The springs 602 can play a role in resetting and supporting the monitoring plate 2. When the monitoring plate 2 is subjected to external force and moves downward, the springs 602 can use their own elasticity to push the monitoring plate 2 to reset.
[0025] Two positioning blocks 7 are fixedly connected to the bottom surface of the guardrail body 1. Each positioning block 7 has four positioning holes 8 on its upper surface. The positioning blocks 7 and positioning holes 8 facilitate the installation and fixing of the guardrail body 1 by workers. The guardrail body 1 is stably installed on the ground or in a designated position by passing bolts through the positioning holes 8, which enhances the stability and safety of the guardrail body 1.
[0026] A fixed frame 9 is fixedly connected to the front of the guardrail body 1. A warning board 10 is fixedly connected to the inner wall of the fixed frame 9. The warning board 10 is provided with eye-catching warning slogans or patterns to remind people to pay attention to safety and not to climb over the guardrail at will, thereby enhancing the warning effect of the guardrail and further improving the overall safety protection effect.
[0027] Working Principle: First, the operator connects the infrared ranging sensor 4, alarm 5, and servo motor 605 to an external power supply to ensure stable operation. The infrared ranging sensor 4 integrates a microprocessor for analysis and control of other devices. When the fence is in use, if an unauthorized person attempts to climb over it, they will come into contact with the monitoring plate 2 and apply downward pressure. The monitoring plate 2 will then move downwards, simultaneously moving the infrared ranging sensor 4. The infrared ranging sensor 4 monitors the distance between the monitoring plate 2 and the fence body 1 in real time. When the detected distance is less than a preset safety value, the infrared ranging sensor 4 transmits a signal to the alarm 5, which immediately sounds an alarm to warn of unauthorized climbing. The barbed body 3 also effectively prevents unauthorized personnel from climbing over. When authorized security personnel need to urgently climb over the fence, they activate the remote control connected to the servo motor 605. The servo motor 605 then starts, and its power output drives the... The rotation of the first bevel gear 606 drives the second bevel gear 607 and the double-acting screw 601 to rotate. The rotation of the double-acting screw 601 drives the two top blocks 609 to move to both sides along their thread direction. Since the outer surface of the top block 609 is in contact with the outer surface of the inclined block 604, the movement of the top block 609 will separate it from the inclined block 604. Under the action of gravity, the inclined block 604 will descend and its connected fixing plate 603 and barbed body 3 will retract inward, thereby releasing the extended state of the barbed body 3. This ensures that the monitoring plate 2 will not cause harm to the security personnel climbing over it. At the same time, during this process, the top block 609 drives the limiting post 610 to insert into the limiting block 608, which plays a supporting and limiting role, preventing the monitoring plate 2 from triggering an alarm due to excessive pressure when the security personnel climb over it, thus ensuring the safety of the security personnel climbing over. After the climbing is completed, the spring 602 can use its own elasticity to push the monitoring plate 2 to reset, waiting for the next use. Finally, the barb body 3 is pushed back again by the servo motor 605 to continue the protection.
[0028] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.
[0029] It should be noted that all standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, which will not be described in detail here.
[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0031] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.
Claims
1. A reinforced security fence, characterised in that: The guardrail body (1) includes a monitoring plate (2) slidably connected to the inner wall of the guardrail body (1), eight barbed bodies (3) slidably connected to the inner wall of the monitoring plate (2), an infrared ranging sensor (4) fixedly connected to the inner top wall of the monitoring plate (2), an alarm (5) fixedly connected to the back of the guardrail body (1), the alarm (5) being electrically connected to the infrared ranging sensor (4) via a wire, and a release component (6) being provided inside the guardrail body (1).
2. The reinforced security fence according to claim 1, wherein: The release component (6) includes a bidirectional screw (601), both ends of which are rotatably connected to the inner wall of the guardrail body (1). A servo motor (605) is fixedly connected to the inner wall of the guardrail body (1). A first bevel gear (606) is fixedly connected to the output end of the servo motor (605). A second bevel gear (607) is meshed with the outer surface of the first bevel gear (606). The inner wall of the second bevel gear (607) is connected to the bidirectional screw (601). 1) The outer surface is fixedly connected, and the bottom surface of each set of barbed bodies (3) is fixedly connected with a fixing plate (603). The front and back sides of each fixing plate (603) are fixedly connected with inclined blocks (604). The outer surface of the bidirectional screw (601) is threadedly connected with two top blocks (609). The outer surface of each top block (609) is in contact with the outer surface of the inclined block (604). The outer surface of each top block (609) is slidably connected to the inner wall of the guardrail body (1).
3. The reinforced security fence according to claim 2, wherein: Two limiting posts (610) are fixedly connected to the inner wall of each of the top blocks (609), and four limiting blocks (608) are fixedly connected to the bottom surface of the monitoring plate (2).
4. The reinforced security fence according to claim 1, wherein: The bottom surface of the monitoring plate (2) is fixedly connected with four springs (602), and the bottom end of each spring (602) is fixedly connected to the inner bottom wall of the guardrail body (1).
5. The reinforced security fence according to claim 1, wherein: The bottom surface of the guardrail body (1) is fixedly connected to two positioning blocks (7), and each positioning block (7) has four positioning holes (8) on its upper surface.
6. The reinforced security fence according to claim 1, wherein: A fixed frame (9) is fixedly connected to the front of the guardrail body (1), and a warning plate (10) is fixedly connected to the inner wall of the fixed frame (9).
