A grating barrier gate warning device

Abstract

This utility model discloses a grating-based warning device for a shielded door, comprising a grating frame and a crossbeam. Grating frames are installed at both ends of the bottom of the crossbeam, and a horizontal truss is movably mounted on the top of each grating frame via a pivot. Adjustment slots are evenly distributed at the bottom of the horizontal truss. A red projection module light, a yellow projection module light, and a green projection module light are respectively installed at the bottom of each adjustment slot via a movable block. These red, yellow, and green projection module lights project warning areas three, two, and one downwards. By evenly distributing red, yellow, and green projection module lights on the horizontal truss, this utility model can project warning areas one, two, and three sequentially from the inside out onto the ground in front of the shielded door. This makes the warning areas visible, greatly improving the warning effect and enhancing personnel's safety awareness.

Description

Technical Field

[0001] This utility model relates to the field of grating shielded door warning technology, specifically a grating shielded door warning device. Background Technology

[0002] In scenarios such as rail transit and industrial equipment protection, optical grating screen doors serve as crucial safety facilities for isolating hazardous areas from personnel activity areas. The reliability and effectiveness of their warning devices directly impact personnel safety. Traditional screen door warning solutions mainly suffer from the following technical bottlenecks:

[0003] Existing warning devices mostly use single-color warning lights (such as a constant red light) or static warning signs, which can only provide a simple "no entry" message. This approach has two major drawbacks: First, the warning hierarchy is unclear: it cannot achieve tiered warnings of danger levels (such as pre-warning, danger warning, no entry, etc.) through color or area division, making it difficult for personnel to intuitively judge their distance from the danger zone. Second, the visual impact is insufficient: static lights or signs are easily overlooked in complex environments (such as strong light or noise interference), especially when personnel are distracted, making it difficult to quickly arouse alertness. Utility Model Content

[0004] The purpose of this invention is to provide a grating-shielded door warning device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a grating shielding door warning device, comprising a grating frame and a crossbeam. Both ends of the bottom of the crossbeam are provided with grating frames, and the top of the two grating frames are movably mounted with cross trusses via a rotating shaft. A microwave radar is provided in the middle of the outer side of the crossbeam. Visual recognition sensors are installed on the crossbeams on both sides of the microwave radar. Furthermore, a winding reel is installed inside both ends of the crossbeam via a servo motor. A traction rope is wound on the winding reel. One end of each of the two traction ropes extends to the outer side of the crossbeam and is fixedly connected at the middle position of the top of the two cross trusses.

[0006] The bottom of the cross truss is evenly provided with adjustment slots. At the bottom of each adjustment slot, a red projection module light, a yellow projection module light, and a green projection module light are respectively installed through a movable block. The red projection module light, the yellow projection module light, and the green projection module light project warning area three, warning area two, and warning area one downwards.

[0007] Infrared sensors are installed on the inner side of the cross truss at the locations corresponding to warning area three, warning area two, and warning area one, and an audible alarm is also installed at one end of the top of the cross truss.

[0008] Preferably, the red projection module light, the yellow projection module light, and the green projection module light are arranged sequentially from the inside to the outside below the horizontal truss.

[0009] Preferably, the side wall of the grating frame is provided with a storage groove for accommodating the cross truss, and the inner side of the storage groove is also provided with a recess for accommodating the red projection module lamp, the yellow projection module lamp and the green projection module lamp.

[0010] Preferably, the interior of both ends of the crossbeam is provided with cavities for accommodating the servo motor and the winding reel, and the sidewalls of both ends of the crossbeam are provided with holes for the traction rope to pass through.

[0011] Preferably, when the transverse truss is deployed, the transverse truss, the traction rope, and the crossbeam form a stable triangular support structure.

[0012] Preferably, the adjustment grooves are intermittently arranged from the inside to the outside along the length of the transverse truss, and locking bolts are installed on the movable blocks on the outer side of each adjustment groove.

[0013] This utility model provides a grating-shielded door warning device, which has significant advantages over the prior art, specifically in the following aspects:

[0014] This device projects three warning zones—Warning Zone 1, Warning Zone 2, and Warning Zone 3—from the inside out onto the ground in front of the platform screen door by evenly arranging red, yellow, and green projection modules on the horizontal truss. This makes the warning zones visible, greatly improving the warning effect and raising personnel's safety awareness. Compared to traditional single warning lights or signs, this multi-layered, multi-color warning method is more intuitive and eye-catching, effectively preventing personnel from accidentally entering dangerous areas.

[0015] 2. This device features a microwave radar installed in the middle of the outer side of the crossbeam, with visual recognition sensors mounted on both sides. Infrared sensors are also installed on the inner side of the crossbeam corresponding to different warning areas, forming a multi-layered, cross-detection zone. This multi-sensor collaborative approach enables more accurate detection of personnel approach and entry, improving detection accuracy and reliability. Compared to single-sensor detection methods, this device effectively reduces false alarms and missed alarms, ensuring comprehensive and efficient safety protection.

[0016] 3. When personnel enter the yellow warning area, the device will emit a low-frequency "beep" warning sound, and the yellow projection module light will flash simultaneously; when personnel enter the red warning area, the device will emit a high-frequency "alarm sound," and the red projection module light will flash. This dual sound and visual warning method can alert personnel from multiple sensory dimensions, further enhancing the warning effect and effectively preventing safety accidents from occurring.

[0017] 4. The adjustment slots and movable blocks at the bottom of the crossbeam allow for flexible adjustment of the positions of the red, yellow, and green projection module lights to meet the warning requirements of different scenarios. Furthermore, the storage slots and recesses on the side walls of the grating frame, as well as the cavities and holes inside the crossbeams, enable convenient storage and organization of the device when not in use, saving space and improving its portability and practicality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the unfolded side view of the transverse truss structure of this utility model;

[0019] Figure 2 This is a top view of the unfolded transverse truss structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the folded structure of the transverse truss of this utility model;

[0021] Figure 4 This is a front view structural diagram of the present utility model;

[0022] Figure 5 This is a bottom view schematic diagram of the transverse truss structure of this utility model;

[0023] In the diagram: 1. Lattice frame; 2. Groove; 3. Storage slot; 4. Shaft; 5. Crossbeam; 6. Traction rope; 7. Horizontal truss; 8. Sound alarm; 9. Green projection module light; 10. Yellow projection module light; 11. Red projection module light; 12. Warning area one; 13. Warning area two; 14. Warning area three; 15. Adjustment slot; 16. Movable block; 17. Locking bolt; 18. Microwave radar; 19. Visual recognition sensor; 20. Hole; 21. Infrared sensor; 22. Servo motor; 23. Cavity; 24. Reel. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0025] Please see Figure 1-5 One embodiment of this utility model is a grating shielding door warning device, which includes a grating frame 1 and a crossbeam 5. Both ends of the bottom of the crossbeam 5 are provided with grating frames 1, and the top of the two grating frames 1 are movably installed with a crossbeam 7 through a pivot 4.

[0026] The optical grating shielding door warning device mainly consists of components such as the optical grating frame 1, the crossbeam 5, and the cross truss 7. The optical grating frame 1 is a rectangular structure made of high-strength aluminum alloy, possessing high corrosion resistance and mechanical strength. The crossbeam 5, located at the top of the device, is made of stainless steel, exhibiting excellent corrosion resistance and load-bearing capacity. Two optical grating frames 1 are fixed to each end of the bottom of the crossbeam 5, connected by bolts to ensure structural stability.

[0027] The horizontal truss 7 is movably mounted on the top of the grating frame 1 via a pivot 4. The pivot 4 uses high-precision bearings to ensure that the horizontal truss 7 can rotate flexibly. The horizontal truss 7 is made of carbon fiber composite material, which is lightweight and high-strength.

[0028] A microwave radar 18 is installed in the middle of the outer side of the crossbeam 5. Visual recognition sensors 19 are installed on both sides of the crossbeam 5. A winding reel 24 is installed inside both ends of the crossbeam 5 through a servo motor 22. A traction rope 6 is wound on the winding reel 24. One end of the two traction ropes 6 extends to the outer side of the crossbeam 5 and is fixedly connected at the middle position of the top of the two cross trusses 7.

[0029] The interior of both ends of the crossbeam 5 is provided with cavities 23 for accommodating the servo motor 22 and the winding reel 24, and the side walls of both ends of the crossbeam 5 are provided with holes 20 for the traction rope 6 to pass through.

[0030] When the horizontal truss 7 is deployed, the horizontal truss 7, the traction rope 6, and the horizontal beam 5 form a stable triangular support structure.

[0031] The crossbeam 5 is located in the main structure of this utility model, and a microwave radar 18 is installed at the middle position of its outer side. The microwave radar 18 is used to detect the surrounding environment and provide real-time data. The microwave radar 18 is specifically installed by fixing it to the middle outer side of the crossbeam 5 and connecting it to the crossbeam 5 with bolts or other fasteners to ensure that it will not shift during use.

[0032] Visual recognition sensors 19 are mounted on the crossbeams 5 on both sides of the microwave radar 18. The main function of the visual recognition sensors 19 is to identify and track target objects, providing accurate position information. Each visual recognition sensor 19 is fixed to the outside of the crossbeam 5 by a bracket, the design of which ensures that the field of view of the sensor 19 is not obstructed.

[0033] At each end of the crossbeam 5, a take-up reel 24 is mounted inside via a servo motor 22. The servo motor 22 is connected to the take-up reel 24 via a drive shaft, driving the rotation of the take-up reel 24. A traction rope 6 is wound on the take-up reel 24, with one end fixed to the take-up reel 24 and the other end extending to the outside of the crossbeam 5 and fixedly connected at the middle position of the top of the two cross trusses 7.

[0034] The specific structure of the winding reel 24 includes a central shaft and multiple rope winding grooves. The rope winding grooves are designed in a spiral shape to ensure that the traction rope 6 is neatly arranged during the winding process and to avoid tangling or jamming.

[0035] The crossbeam 5 also has cavities 23 at both ends to accommodate the servo motor 22 and the winding reel 24. The design of the cavities 23 ensures that the servo motor 22 and the winding reel 24 can be installed compactly within them, while leaving sufficient space for heat dissipation and maintenance. The inner walls of the cavities 23 are made of anti-slip material to reduce vibration of the servo motor 22 and the winding reel 24 during operation.

[0036] In addition, the side walls at both ends of the crossbeam 5 are provided with holes 20 for the traction rope 6 to pass through. The diameter of the hole 20 is slightly larger than the diameter of the traction rope 6 to ensure that the traction rope 6 can pass through smoothly, while preventing the traction rope 6 from swaying during movement due to the hole 20 being too large.

[0037] When the horizontal truss 7 is deployed, the horizontal truss 7, the traction rope 6, and the crossbeam 5 form a stable triangular support structure. The specific deployment process is as follows:

[0038] Servo motor 22 starts, driving the winding reel 24 to rotate, and the traction rope 6 gradually retracts.

[0039] This causes the horizontal truss 7 to rotate and unfold outward around the pivot 4. When the horizontal truss 7 is fully unfolded, the traction rope 6 is tightened, and a stable triangular support structure is formed between the horizontal truss 7, the traction rope 6, and the crossbeam 5.

[0040] The bottom of the horizontal truss 7 is evenly provided with adjustment grooves 15. The adjustment grooves 15 are intermittently arranged from the inside to the outside along the length direction of the horizontal truss 7. Each adjustment groove 15 is equipped with a locking bolt 17 on the movable block 16 on the outside.

[0041] At the bottom of each adjustment slot 15, a red projection module light 11, a yellow projection module light 10, and a green projection module light 9 are respectively installed via a movable block 16.

[0042] The red projection module light 11, the yellow projection module light 10, and the green projection module light 9 are arranged sequentially from the inside to the outside below the horizontal truss 7.

[0043] The red projection module light 11, the yellow projection module light 10, and the green projection module light 9 project warning areas 14, 13, and 12 downwards.

[0044] Multiple adjustment slots 15 are evenly arranged at the bottom of the transverse truss 7, and these adjustment slots 15 are intermittently arranged from the inside to the outside along the length of the transverse truss 7. Specifically, each adjustment slot 15 can independently perform its function without being affected by adjacent adjustment slots.

[0045] Each adjusting groove 15 has a movable block 16 installed on its outer side. The movable block 16 is inserted into the adjusting groove 15 through a sliding fit, allowing it to move freely within the groove. The movable block 16 is made of wear-resistant plastic to reduce friction with the inner wall of the adjusting groove 15. A locking bolt 17 is installed on each movable block 16. The threaded portion of the locking bolt 17 matches the threaded hole on the movable block 16. By rotating the locking bolt 17, the position of the movable block 16 can be fixed.

[0046] At the bottom of each adjustment slot 15, a red projection module light 11, a yellow projection module light 10, and a green projection module light 9 are respectively installed via movable blocks 16. The specific installation method is as follows:

[0047] Red projection module light 11: Located at the innermost side of the adjustment slot 15, it is aligned with the mounting hole of the red projection module light 11 through the fixing hole on the movable block 16 and fixed with screws.

[0048] Yellow projection module light 10: Located outside the red projection module light 11, it is also aligned with the mounting hole of the yellow projection module light 10 through the fixing hole on the movable block 16 and fixed with screws.

[0049] Green projection module light 9: Located outside the yellow projection module light 10, its installation method is the same as the previous two.

[0050] The red projection module light 11, the yellow projection module light 10, and the green projection module light 9 are arranged in a straight line from the inside to the outside below the horizontal truss 7.

[0051] Red projection module light 11, yellow projection module light 10, and green projection module light 9 project warning area three 14, warning area two 13, and warning area one 12 downwards, respectively. The specific projection effects are as follows:

[0052] Red projection module light 11: projects a warning area 3 14 downwards. This area is a red light spot used to indicate the highest level of warning.

[0053] Yellow projection module light 10: projects a warning area 2 13 downwards. This area is a yellow light spot used to indicate a medium level of warning.

[0054] Green projection module light 9: Projects a warning area 12 downwards. This area is a green light spot used to indicate a low level of warning.

[0055] Infrared sensors 21 are installed on the inner side of the cross truss 7 at the locations corresponding to warning area 3 14, warning area 2 13 and warning area 1 12, and an audible alarm 8 is also installed at one end of the top of the cross truss 7.

[0056] An infrared sensor 21 is installed on the inner side of the cross truss 7 at the corresponding position of each warning zone (i.e., warning zone 12, warning zone 23 and warning zone 34).

[0057] The main function of the infrared sensor 21 is to detect moving objects within the corresponding warning area below it. When an object enters the sensor's sensing range, the sensor 21 emits a signal, which is transmitted to the control unit (not shown in the figure) for processing via a wire (not shown in the figure).

[0058] The audible alarm 8 is installed at one end of the top of the cross truss 7, and the specific installation method is as follows:

[0059] Mounting holes: Mounting holes are pre-drilled at one end of the top of the cross truss 7.

[0060] Fixed alarm: Secure the audible alarm 8 to the mounting hole with bolts, ensuring that the sound outlet of the alarm 8 faces the outside of the crossbeam 7 so that the sound can be effectively propagated.

[0061] The main function of the audible alarm 8 is to emit an audible alarm upon receiving an alarm signal from the control unit to alert those nearby to safety. The volume and frequency of the alarm sound can be adjusted as needed.

[0062] The side wall of the grating frame 1 is provided with a storage groove 3 for accommodating the horizontal truss 7, and the inner side of the storage groove 3 is also provided with a recess 2 for accommodating the red projection module lamp 11, the yellow projection module lamp 10 and the green projection module lamp 9.

[0063] The side wall of the grating frame 1 is provided with a storage slot 3 for accommodating the horizontal truss 7. The shape of the storage slot 3 matches the shape of the horizontal truss 7 so that the horizontal truss 7 can be smoothly rotated and stored in the storage slot 3.

[0064] Specifically, the depth and width of the storage slot 3 are designed according to the dimensions of the cross truss 7 to ensure that the cross truss 7 can be securely fixed within the storage slot 3.

[0065] The inner side of the storage slot 3 is also provided with grooves 2 for accommodating the red projection module lamp 11, the yellow projection module lamp 10, and the green projection module lamp 9. These grooves 2 correspond to the projection module lamps of different colors, and their shapes and sizes match the shape of their respective projection module lamps to ensure that the projection module lamps can be accurately installed and fixed in the grooves 2.

[0066] When this application embodiment is used,

[0067] When the platform screen door enters the working state, the control system sends an "expand" command to the servo motor 22.

[0068] Servo motor drive: Servo motor 22 rotates in the forward direction, driving the winding reel 24 to wind up the traction rope 6. The traction rope 6 pulls the top middle position of the cross truss 7 outward through the hole 20. The cross truss 7 rotates outward around the pivot 4. When it is unfolded to the horizontal position, the traction rope 6 is tightened, forming a stable triangular support structure with the cross beam 5 and the cross truss 7.

[0069] The microwave radar 18 continuously scans the area in front of the shielded door to detect whether any personnel or objects are approaching, generating preliminary "presence" signals (such as distance and movement speed).

[0070] The visual recognition sensor 19 performs image recognition on targets detected by microwave radar, distinguishes between people and object types, tracks their movement trajectory, and outputs accurate position coordinates.

[0071] When a target enters the corresponding warning area, the infrared sensor detects the obstruction signal and determines the danger level of the target by combining the position of the projected area.

[0072] Phase 1: Entering Green Alert Zone 12 (Low Risk Warning)

[0073] Triggering conditions: Personnel enter the green projection area (the area furthest from the shielded door), infrared sensor 21 (corresponding to area one) detects the signal, and visual recognition sensor 19 confirms that the target is "personnel".

[0074] Warning action: No audible alarm, green projection module light 9 remains constantly lit, indicating "Approaching a dangerous area, please proceed with caution".

[0075] Phase Two: Entering Yellow Warning Zone 2 (Medium Risk Warning)

[0076] Triggering condition: Personnel cross the green area and enter the yellow projection area (middle area), which triggers the corresponding infrared sensor 21 (area two), and the microwave radar data confirms that the target is continuously approaching.

[0077] Warning action:

[0078] Visual warning: Yellow projection module light 10 begins to flash (approximately 1 time per second);

[0079] Sound warning: The sound alarm 8 emits a low-frequency "beep" warning sound to remind you that "you have entered a dangerous area and must stop immediately".

[0080] Phase Three: Entering Red Alert Zone 314 (High Risk, Prohibited)

[0081] Triggering conditions: When personnel cross the yellow area and enter the red projection area (adjacent to the shielded door area), the corresponding infrared sensor 21 (area three) is triggered, and the visual recognition sensor 19 confirms that the target has entered the high-risk area.

[0082] Warning action:

[0083] Visual warning: Red projection module light 11 flashes at a high frequency (approximately 3 times / second), while the red module light flashes synchronously to enhance the visual impact;

[0084] Sound warning: The sound alarm 8 switches to a high-frequency alarm sound (such as "beep-beep-"), and the volume is increased to over 90 decibels, forcibly reminding "Do not enter, evacuate immediately".

[0085] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0086] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0087] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0088] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A grating barrier gate warning device comprising a grating frame (1) and a cross beam (5), characterized in that: At both ends of the bottom of the crossbeam (5), there are grating frames (1). The top of the two grating frames (1) is movably mounted with a cross truss (7) through a pivot (4). A microwave radar (18) is set in the middle of the outer side of the crossbeam (5). Visual recognition sensors (19) are installed on the crossbeam (5) on both sides of the microwave radar (18). A winding reel (24) is installed inside both ends of the crossbeam (5) through a servo motor (22). A traction rope (6) is wound on the winding reel (24). One end of the two traction ropes (6) extends to the outer side of the crossbeam (5) and is fixedly connected at the middle position of the top of the two cross trusses (7). The bottom of the cross truss (7) is uniformly provided with adjustment slots (15). Each adjustment slot (15) is equipped with a red projection module light (11), a yellow projection module light (10) and a green projection module light (9) respectively via a movable block (16). The red projection module light (11), the yellow projection module light (10) and the green projection module light (9) project warning area three (14), warning area two (13) and warning area one (12) downwards. Infrared sensors (21) are installed at the positions corresponding to warning area three (14), warning area two (13) and warning area one (12) on the inner side of the cross truss (7), and an audible alarm (8) is also installed at one end of the top of the cross truss (7).

2. A grating screen door warning device according to claim 1, wherein: The red projection module light (11), yellow projection module light (10) and green projection module light (9) are arranged sequentially from the inside to the outside below the horizontal truss (7).

3. A grating screen door warning device according to claim 1, wherein: The side wall of the grating frame (1) is provided with a storage groove (3) for accommodating the cross truss (7), and the inner side of the storage groove (3) is also provided with a groove (2) for accommodating the red projection module lamp (11), the yellow projection module lamp (10) and the green projection module lamp (9).

4. A grating screen door warning device according to claim 1, wherein: The crossbeam (5) is also provided with cavities (23) at both ends for accommodating the servo motor (22) and the winding reel (24), and the side walls at both ends of the crossbeam (5) are also provided with holes (20) for the traction rope (6) to pass through.

5. A grating screen door warning device according to claim 1, wherein: When the horizontal truss (7) is deployed, the horizontal truss (7), the traction rope (6), and the crossbeam (5) form a stable triangular support structure.

6. The grating-shielded door warning device according to claim 1, characterized in that: The adjustment grooves (15) are intermittently arranged from the inside to the outside along the length of the transverse truss (7), and locking bolts (17) are installed on the movable blocks (16) on the outside of each adjustment groove (15).

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