Elevator opening safety device

Abstract

The utility model relates to the technical fields of safety protection fence, more specifically, relate to a kind of elevator opening part safety equipment, including safety fence, safety detection system and safety control system;Safety fence is equipped with real trolley area and empty trolley area separated by lifting passage, and real trolley area and empty trolley area are equipped with safety detection system;The both ends of real trolley area and the both ends of empty trolley area are respectively equipped with first protective fence and second protective fence, and first protective fence is close to lifting passage setting;Real trolley area and empty trolley area are equipped with sunken sunken platform structure, and the track for conveying trolley is higher than sunken platform structure and penetrates two second protective fences;Safety detection system, trolley and the first protective fence in real trolley area are respectively connected with safety control system communication.The utility model can realize double protection, and, through sunken platform structure, eliminate personnel falling risk, improve personnel safety feeling and accident prevention ability.

Description

Technical Field

[0001] This utility model relates to the technical field of safety guardrails, and more specifically, to a safety device for the opening of an elevator. Background Technology

[0002] As a commonly used vertical transportation device in industrial sites, elevators typically use their openings as channels for loading and unloading workpieces, characterized by their open structure and frequent access. However, these openings pose serious safety hazards, including accidental falls of personnel or objects, personnel accidentally entering the machine's operating area, and collisions caused by accidental machine startup. Existing technologies mostly use single safety gates or railings for protection, which, while providing some protection, still have the following major problems: the protective devices have limited coverage and cannot comprehensively guarantee the safety of personnel and equipment; there is a lack of effective linkage between safety devices, resulting in slow response speeds and potential safety blind spots; safety detection systems have many blind spots, making it difficult to detect dangerous intrusions in a timely manner; the buffer structure design is unreasonable and cannot effectively mitigate the risk of falls; and the protective equipment is difficult to maintain and lacks real-time monitoring and status feedback functions.

[0003] Existing technology discloses a robot safety fence with intelligent alarm function, including a workpiece handling system and a safety protection control system. The workpiece handling system includes a safety fence fixed to the ground, and the safety protection control system includes a safety input module, a safety control module, and a safety output module. The safety input module includes a safety light curtain, a safety pad, and a safety laser scanner, and the safety output module includes multi-layer warning lights. This solution can comprehensively detect whether personnel are approaching a hazard and output an alarm when a hazard is detected. However, when used for the protection of the opening of an elevator, there is a risk of personnel falling due to the gap between the elevator opening and the external platform. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a safety device for the opening of an elevator to eliminate the risk of people falling.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A safety device for the opening of an elevator is provided, including a safety fence, a safety detection system, and a safety control system;

[0007] The safety fence includes a full trolley area and an empty trolley area separated by a lifting channel. Both the full trolley area and the empty trolley area are equipped with the safety detection system.

[0008] The two ends of the solid trolley area and the two ends of the empty trolley area are respectively provided with a first protective fence and a second protective fence, and the first protective fence is set close to the lifting channel.

[0009] Both the actual trolley area and the empty trolley area are equipped with a sunken platform structure, and the track for transporting the trolley passes through the two second protective fences and is higher than the sunken platform structure.

[0010] The safety detection system, the trolley, and the first protective fence located in the actual trolley area are all communicatively connected to the safety control system.

[0011] This utility model's safety device for the elevator opening provides primary protection through a safety fence. Personnel can enter the loaded or empty trolley area through a second protective fence. During non-production periods, the first protective fence for the loaded trolley area remains closed. During production, the first protective fence for the loaded trolley area is opened, and a safety detection system detects personnel entering the safety fence. When personnel are detected entering the loaded or empty trolley area, the safety control system stops the trolley from transporting and automatically closes the first protective fence for the loaded trolley area. The first protective fence blocks personnel from entering the loaded or empty trolley area, preventing them from entering the elevator shaft and achieving dual protection. At the same time, the platform structure eliminates the risk of personnel falling, improving personnel safety and accident prevention capabilities.

[0012] Furthermore, the platform structure includes a buffer surface that gradually descends from the second protective fence to the first protective fence, with a platform railing at the edge of the buffer surface. The buffer surface effectively mitigates the risk of falls, while the platform railing effectively prevents personnel from entering, enhancing personnel safety and accident prevention capabilities. Moreover, the design of the platform structure provides some installation space for the safety detection system, preventing interference from tracks, trolleys, and their components with the system's detection results.

[0013] Furthermore, the slope of the buffer surface does not exceed 10°, and the height of the settling platform structure is not less than 500mm.

[0014] Furthermore, the first protective fence located in the area of ​​the actual trolley includes a fixed edge guardrail and an automatically opening and closing safety door. The fixed edge guardrail is located between the platform fence and the automatically opening and closing safety door, and the safety control system is communicatively connected to the automatically opening and closing safety door. The first protective fence located in the area of ​​the empty trolley is a contour-following fixed guardrail, which has a contour-following opening for the trolley to pass through. The size of the contour-following opening of the contour-following fixed guardrail matches the size of the trolley, ensuring that the contour-following opening allows the trolley to pass through smoothly with minimal clearance, while the remaining portion can be used to prevent personnel from entering the lifting channel. During non-production periods, the automatic opening and closing safety gate remains closed, working together with the edge fixed guardrail and the platform railing to prevent personnel from entering the lifting channel. During production, the automatic opening and closing safety gate opens, allowing the trolley and its parts to pass smoothly into and out of the trolley area. A safety detection system detects personnel entering the trolley area or the empty trolley area. When personnel are detected entering the trolley area or the empty trolley area, the safety control system stops the trolley from transporting. In the trolley area, the safety control system also controls the automatic opening and closing safety gate to close automatically.

[0015] Furthermore, the height difference between the top of the edge-fixed guardrail and the bottom of the sunken platform structure is not less than 1.2m.

[0016] Furthermore, the safety detection system includes a safety light curtain installed at the entrance of the second protective fence, which is communicatively connected to the safety control system. During production, the safety light curtain monitors in real time whether personnel enter the area of ​​the loaded or empty trolley. When personnel are detected to have mistakenly entered, the safety control system stops the trolley from transporting parts and triggers the automatic opening and closing of the safety door. When a trolley carrying parts passes through the second protective fence, the movement of the friction wheels at the corresponding positions on the track detects that a trolley needs to pass through the light curtain area. A signal is then sent to the safety control system to temporarily shield the safety light curtain, preventing false detection and false alarms.

[0017] Furthermore, the safety detection system includes a safety mat located inside the second protective fence, and the safety mat is communicatively connected to the safety control system. Safety mats are provided on both sides of the track, and the distance between the edges of two safety mats located in the same area is not less than the width of the second protective fence, ensuring that an alarm and shutdown are triggered when personnel enter the corresponding area through the second protective fence.

[0018] Furthermore, the safety detection system includes through-beam detection switches evenly spaced along the track conveying direction, and the through-beam detection switches are communicatively connected to the safety control system. By integrating safety light curtains, safety mats, and through-beam detection switches, full-area coverage detection is achieved, establishing a comprehensive, multi-layered protection system to avoid missed detections and blind spots, thus achieving comprehensive monitoring and protection without blind spots.

[0019] Furthermore, the through-beam detection switch is located within the recessed platform structure, the height of the through-beam detection switch is lower than the track, and the distance between two adjacent sets of through-beam detection switches does not exceed 300mm.

[0020] Furthermore, it also includes an alarm system, which comprises an alarm horn and / or dual-color lights that are communicatively connected to the safety control system. When the safety detection system detects an abnormal signal indicating that personnel have entered the safety fence, the safety control system stops the control equipment, triggers the automatic opening and closing of the safety door to close automatically, and issues an alarm through the alarm horn and / or dual-color lights. The alarm system needs to be manually reset to clear the abnormal state.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] The system achieves dual protection through a first and second protective fence; the sunken platform structure eliminates the risk of falls and enhances personnel safety and accident prevention capabilities; and it realizes a comprehensive, multi-layered protection system, enabling monitoring and protection without blind spots. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the safety device at the opening of the elevator in an embodiment of this utility model;

[0024] Figure 2 This is a schematic diagram of the installation of the sunken platform structure in an embodiment of this utility model;

[0025] Figure 3 This is a schematic diagram of the installation of the automatic opening and closing safety door in an embodiment of this utility model;

[0026] Figure 4 This is a schematic diagram of the installation of the contour-following fixed guardrail in an embodiment of this utility model;

[0027] Figure 5 This is a schematic diagram of the installation of the second protective fence in an embodiment of this utility model.

[0028] In the attached diagram: 1-Safety fence; 2-First protective fence; 21-Fixed edge guardrail; 22-Automatic opening and closing safety door; 23-Shaped fixed guardrail; 3-Second protective fence; 4-Sunken platform structure; 41-Buffer surface; 42-Sunken platform guardrail; 5-Safety light curtain; 6-Safety carpet; 7-Through-beam detection switch; 8-Railway; 9-Trolley. Detailed Implementation

[0029] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0030] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they 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 be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0031] Example 1

[0032] A safety device for the opening of an elevator, such as Figure 1 , Figure 2 As shown, it includes a safety fence 1, a safety detection system, and a safety control system;

[0033] Safety fence 1 is divided into a full trolley area and an empty trolley area by a lifting channel. Both the full trolley area and the empty trolley area are equipped with safety detection systems.

[0034] The two ends of the actual trolley area and the two ends of the empty trolley area are respectively equipped with a first protective fence 2 and a second protective fence 3, and the first protective fence 2 is set close to the lifting channel;

[0035] Both the actual trolley area and the empty trolley area are equipped with a sunken platform structure 4. The track 8 used to transport the trolley 9 passes through the two second protective fences 3 and is higher than the sunken platform structure 4.

[0036] The safety detection system, the trolley 9, and the first protective fence 2 located in the actual trolley area are all connected to the safety control system.

[0037] The aforementioned safety equipment at the elevator opening provides primary protection through safety fence 1. Personnel can enter the full or empty trolley area through the second protective fence 3. During non-production periods, the first protective fence 2 of the full trolley area remains closed. During production, the first protective fence 2 of the full trolley area is opened, and a safety detection system detects personnel entering the safety fence 1. When personnel are detected entering the full or empty trolley area, the safety control system stops the trolley 9 from transporting and automatically closes the first protective fence 2 of the full trolley area. The first protective fence 2 blocks personnel from entering the full or empty trolley area, preventing them from entering the elevator shaft and achieving dual protection. At the same time, the platform structure 4 eliminates the risk of personnel falling, enhancing personnel safety and accident prevention capabilities.

[0038] like Figure 1 , Figure 2 As shown, the platform structure 4 includes a buffer surface 41 that gradually descends from the second protective fence 3 to the first protective fence 2, and a platform fence 42 is provided at the edge of the buffer surface 41. Specifically, the slope of the buffer surface 41 does not exceed 10°, and the height of the platform structure 4 is not less than 500mm. The buffer surface 41 effectively buffers the risk of falls, while the platform fence 42 effectively prevents personnel from falling, improving personnel safety and accident prevention capabilities. Furthermore, the design of the platform structure 4 provides some installation space for the safety detection system, preventing the track 8, trolley 9, and their components from interfering with the detection results of the safety detection system.

[0039] like Figure 3 As shown, the first protective fence 2 located in the actual vehicle area includes a fixed edge guardrail 21 and an automatic opening and closing safety gate 22. The fixed edge guardrail 21 is located between the platform fence 42 and the automatic opening and closing safety gate 22. The safety control system is communicatively connected to the automatic opening and closing safety gate 22. Figure 4As shown, the first protective fence 2 located in the empty trolley area is a contour-following fixed guardrail 23, which has a contour-following opening for the trolley 9 to pass through. Specifically, the height difference between the top of the edge-fixed guardrail 21 and the bottom of the platform structure 4 is not less than 1.2m. The size of the contour-following opening of the contour-following fixed guardrail 23 matches the size of the trolley 9, ensuring that the contour-following opening allows the trolley 9 to pass through smoothly with minimal clearance, while the remaining portion can be used to prevent personnel from entering the lifting channel. During non-production periods, the automatic opening and closing safety door 22 remains closed, together with the edge fixed guardrail 21 and the platform railing 42, preventing personnel from entering the lifting channel. During production, the automatic opening and closing safety door 22 opens, allowing the trolley 9 and its parts to pass smoothly through the automatic opening and closing safety door 22 into and out of the trolley area. The safety detection system detects personnel entering the trolley area or the empty trolley area. When personnel are detected entering the trolley area or the empty trolley area, the safety control system controls the trolley 9 to stop transporting. In the trolley area, the safety control system also controls the automatic opening and closing safety door 22 to close automatically.

[0040] It also includes an alarm system, which comprises an alarm horn and / or dual-color lights that are communicatively connected to the safety control system. The sound pressure level of the alarm horn is not less than 85 dB. When the safety detection system detects an abnormal signal of personnel entering the safety fence 1, the safety control system stops the control equipment, triggers the automatic opening and closing of the safety door 22 to close automatically, and issues an alarm through the alarm horn and / or dual-color lights. The alarm system needs to be manually reset to clear the abnormal state.

[0041] Example 2

[0042] This embodiment is similar to Embodiment 1, except that, as Figure 5 As shown, the safety detection system includes a safety light curtain 5 installed at the entrance of the second protective fence 3, which is communicatively connected to the safety control system. Specifically, the effective detection height range of the safety light curtain 5 is not less than 1500mm. During production, the safety light curtain 5 monitors in real time whether personnel enter the area of ​​the loaded or empty trolley. When personnel are detected to have mistakenly entered, the safety control system controls the trolley 9 to stop transporting parts and triggers the automatic opening and closing safety door 22 to close automatically. When the trolley 9 carrying parts passes through the second protective fence 3, the movement command of the friction wheel at the corresponding position on the track 8 detects that the trolley 9 needs to pass through the light curtain area, and sends a signal to the safety control system to temporarily shield the safety light curtain 5 to prevent false detection and false alarms.

[0043] like Figure 1As shown, the safety detection system includes a safety mat 6 located inside the second protective fence 3, and the safety mat 6 is communicatively connected to the safety control system. Safety mats 6 are installed on both sides of the track 8, and the distance between the edges of two safety mats 6 located in the same area is not less than the width of the second protective fence 3. Specifically, the detection area of ​​the safety mat 6 is not less than... This ensures that when personnel enter the corresponding area through the second protective fence 3, an alarm will be triggered and the system will shut down.

[0044] Example 3

[0045] This embodiment is similar to Embodiment 2, except that, as Figure 1 As shown, the safety detection system includes through-beam detection switches 7 evenly spaced along the conveying direction of track 8, which are communicatively connected to the safety control system. In this embodiment, the safety light curtain 5, safety mat 6, and through-beam detection switches 7 are integrated. The safety light curtain 5 detects personnel who have mistakenly entered the safety fence 1, the safety mat 6 detects personnel entering the second protective fence 3, and the through-beam detection switches 7 detect personnel in both the full-area and empty-area areas. This achieves full-area coverage detection, establishing a comprehensive, multi-layered protection system, avoiding missed detections and blind spots, and achieving comprehensive monitoring and protection.

[0046] The through-beam detection switch 7 is located inside the sinking platform structure 4. The height of the through-beam detection switch 7 is lower than that of the track 8 to prevent the track 8, the trolley 9 and the parts on it from interfering with the detection results. The distance between two adjacent sets of through-beam detection switches 7 does not exceed 300mm. The detection and protection capabilities are improved by the dense arrangement of through-beam detection switches 7.

[0047] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0048] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A safety device for the opening of an elevator, characterized in that, Includes safety fencing (1), safety detection system and safety control system; The safety fence (1) is provided with a full trolley area and an empty trolley area separated by a lifting channel. The safety detection system is provided in both the full trolley area and the empty trolley area. The two ends of the solid trolley area and the two ends of the empty trolley area are respectively provided with a first protective fence (2) and a second protective fence (3), and the first protective fence (2) is set close to the lifting channel; Both the actual trolley area and the empty trolley area are provided with a sunken platform structure (4), and the track (8) for transporting the trolley (9) passes through the two second protective fences (3) and is higher than the sunken platform structure (4). The safety detection system, the trolley (9), and the first protective fence (2) located in the actual trolley area are respectively connected to the safety control system.

2. The safety device for the opening of the elevator according to claim 1, characterized in that, The sunken platform structure (4) includes a buffer surface (41) that gradually descends from the second protective fence (3) to the first protective fence (2), and the edge of the buffer surface (41) is provided with a sunken platform fence (42).

3. The safety device for the elevator opening according to claim 2, characterized in that, The slope of the buffer surface (41) shall not exceed 10°, and the height of the settling platform structure (4) shall not be less than 500mm.

4. The safety device for the elevator opening according to claim 2, characterized in that, The first protective fence (2) located in the actual trolley area includes a fixed edge guardrail (21) and an automatic opening and closing safety door (22). The fixed edge guardrail (21) is located between the sinking platform fence (42) and the automatic opening and closing safety door (22). The safety control system is communicatively connected to the automatic opening and closing safety door (22). The first protective fence (2) located in the empty trolley area is a contoured fixed guardrail (23). The contoured fixed guardrail (23) is provided with a contoured opening for the trolley (9) to pass through.

5. The safety device for the elevator opening according to claim 4, characterized in that, The height difference between the top of the edge-fixed guardrail (21) and the bottom of the sunken platform structure (4) is not less than 1.2m.

6. The safety device for the elevator opening according to claim 4, characterized in that, The safety detection system includes a safety light curtain (5) located at the entrance of the second protective fence (3), and the safety light curtain (5) is communicatively connected to the safety control system.

7. The safety device for the elevator opening according to claim 4, characterized in that, The safety detection system includes a safety mat (6) located inside the second protective fence (3), and the safety mat (6) is communicatively connected to the safety control system.

8. The safety device for the elevator opening according to claim 4, characterized in that, The safety detection system includes through-beam detection switches (7) evenly spaced along the conveying direction of the track (8), and the through-beam detection switches (7) are communicatively connected to the safety control system.

9. The safety device for the elevator opening according to claim 8, characterized in that, The through-beam detection switch (7) is located inside the sinking structure (4). The height of the through-beam detection switch (7) is lower than that of the track (8). The distance between two adjacent sets of through-beam detection switches (7) does not exceed 300mm.

10. The safety device for the elevator opening according to any one of claims 1 to 9, characterized in that, It also includes an alarm system, which includes an alarm horn and / or a dual-color light that are communicatively connected to the safety control system.

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