Elevator shaft landing protection structure
By designing a retractable U-shaped support structure in the elevator shaft level protection structure, the problem of the protective net being easily damaged due to uneven stress is solved, the reusability and service life of the protective structure are improved, and safety and stability are enhanced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 河北建工雄安建设发展有限公司
- Filing Date
- 2026-04-22
- Publication Date
- 2026-05-29
AI Technical Summary
In existing elevator shaft level protection structures, the protective netting is easily damaged due to uneven stress, leading to reduced durability and increased safety hazards.
A flat-level protective structure for elevator shafts is designed. By connecting units, the beams and railings can switch between parallel and vertical states, forming a retractable U-shaped support structure. This reduces the compression depth of the protective netting when stacked and increases the overlap area with the protective netting.
It solves the problem of easy damage to protective netting, improves reusability and service life, while reducing storage space and enhancing safety and stability.
Smart Images
Figure CN122106291A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of elevator shaft protection technology, specifically to a level protection structure for elevator shafts. Background Technology
[0002] The elevator shaft level protection structure is used to seal off elevator doors when they are open, preventing people or objects from falling into the elevator shaft and causing injury to people or items.
[0003] Its protective structure is mostly a double-layer barrier structure consisting of a fence and a protective net. The fence blocks large-volume, high-kinetic-energy objects, while the protective net blocks small-volume, low-kinetic-energy objects; and this structure can be reused.
[0004] Because the thickness of the fence in the protective structure is much greater than that of the protective netting, during stacking, the weight of the upper and lower layers will be concentrated on the contact area. The fence, due to its greater thickness and rigidity, can be directly supported by the force, while the protective netting, due to its thinness and flexible structure, is in a suspended and compressed state without effective support. This uneven force will generate a continuous destructive torque on the protective netting surface. After long-term or repeated stacking, this will cause the protective netting surface to deform and its tension to decrease, resulting in a significant reduction in durability. In severe cases, it will directly cause irreversible damage such as tearing of the netting surface and detachment of welds, ultimately shortening the service life of the entire protective structure, or even causing it to lose its safety protection capability, increasing safety hazards in subsequent use. Summary of the Invention
[0005] The purpose of this invention is to provide a level protection structure for elevator shafts to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a level protection structure for elevator shafts, including a protective net and a connecting unit, wherein one side of the connecting unit is connected to the protective net, and the other side is respectively connected to a horizontal beam and a vertically arranged railing with the same structure. At least one crossbeam is provided at the end of the railing, and at least one railing is provided; Both the crossbeam and the railing are composed of a base plate and two side plates. The two side plates are respectively hinged to both sides of the base plate. The included angle between the side plates is structurally limited to between π / and π. A rotating plate is hinged to the opposite side of the side plate that connects to the base plate. The connecting unit consists of a first transmission unit and a second transmission unit. The first transmission unit and the second transmission unit are respectively connected to the crossbeam and the railing. The first transmission unit and the second transmission unit are respectively used to switch the base plate and the two side plates in the crossbeam and the railing between a parallel state and a mutually perpendicular state.
[0007] Preferably, the first transmission unit includes a fixing plate, which is fixedly connected to a rotating plate at the end of the side plate of the crossbeam near the railing. A horizontally arranged fixing rod is fixedly connected to the end of the rotating plate on the side of the crossbeam away from the railing. The connecting unit also includes a fixing unit, which is used to fix the relative position between the fixing plate and the fixing rod after the crossbeam is folded.
[0008] Preferably, the second transmission unit includes a sliding plate, which is disposed at one end of the fixed plate near the railing and is capable of lateral sliding displacement relative to the fixed plate; one of the two rotating plates in the railing is fixedly connected to the fixed plate and the other is connected to the sliding plate; the fixing unit can fix the relative position between the fixed plate and the sliding plate after the railing is folded.
[0009] Preferably, the fixing unit includes a connecting rod, which is rotatably connected to the fixing rod around the axis of the fixing rod, and the axis of the connecting rod is perpendicular to the axis of the fixing rod. A ring is fixedly connected to the end of the connecting rod. A ring is fixedly connected to the end of the sliding plate near the fixing rod. The ring and the ring are concentric and are fixed by bolts.
[0010] Preferably, the rotating plate and the sliding plate are laterally elastically slidably connected, and the sliding plate is provided with a locking component, which is used to lock the rotating plate on the sliding plate with the fixed plate after the railing is folded.
[0011] Preferably, the engaging assembly includes two sliders that are vertically slidably connected to the left and right ends of the slide plate, respectively. There is a gap between the slide plate and the fixed plate. The fixed plate has a wedge block on the side closer to the railing and away from the second ring. The wedge block is used to assist the slide plate in fitting the fixed plate. A pin block is fixedly connected to the upper end of the rotating plate connected to the slide plate. Engaging blocks are fixedly connected to the side wall of the fixed plate at the positions corresponding to the pin blocks. The pin blocks can engage with the engaging blocks.
[0012] Preferably, the crossbeam consists of two beams, which are symmetrically arranged vertically on the connecting unit.
[0013] Preferably, there are at least two railings arranged in a horizontal array.
[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. When the protective structure needs to be stacked, the first and second transmission units can drive it in opposite directions to restore the base plate of the crossbeam and railing and the side plates from a vertical state to a parallel state. At this time, the overall thickness of the fence is greatly reduced (only the sum of the thickness of the base plate and the side plates, which is much smaller than the thickness of the U-shaped structure in the working state). Since the overall thickness of the fence is greatly reduced, the compression depth of the fence on the protective net during stacking is also greatly reduced, reducing the depth of the protective net when it is subjected to unsupported compression by the fence. When the protective net is subjected to unsupported compression by the fence, it can also relieve the force through its own slight deformation, avoiding the weight of the upper and lower layers of the structure from being concentrated on the protective net during stacking.
[0015] 2. As the base plate of the crossbeam and railing returns to a parallel state from a vertical state, the overlapping area of the fence and the protective net increases, further reducing the probability of the protective net being squeezed by the unsupported fence.
[0016] 3. This retractable design not only solves the problem of easy damage to the protective net when traditional protective structures are stacked, but also reduces storage space, further improving the reusability and service life of the protective structure. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 Enlarged schematic diagram of the structure at point A in the middle; Figure 3 This is a schematic diagram of the structure of the present invention after removing components such as the upper crossbeam, fixing rod, and ring 1. Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point B; Figure 5 This is a rear half-section view of the structure after the protective netting has been removed. Figure 6 for Figure 5 Enlarged schematic diagram of the structure at point C; Figure 7 for Figure 5 Right view half-section structural diagram; Figure 8 for Figure 7 Enlarged schematic diagram of the structure at point D; Figure 9 for Figure 8 Enlarged schematic diagram of the structure at point E in the middle; Figure 10 A comparison diagram showing the state of the fixed plate and sliding plate between the railing before and after it is folded up; Figure 11 This is a comparison image showing the beams and railings before and after being folded over.
[0018] The attached diagram lists the components represented by each number as follows: 1. Protective netting; 2. Horizontal beam; 3. Railing; 4. Base plate; 5. Side plate; 6. Rotating plate; 7. Fixing plate; 8. Fixing rod; 9. Slide plate; 10. Connecting rod; 11. Ring 1; 12. Ring 2; 13. Bolt; 14. Wedge block; 15. Pin block; 16. Engaging block; 17. Slider. Detailed Implementation
[0019] Please see Figure 1-11 The present invention provides a technical solution: a level protection structure for elevator shafts, including a protective net 1 and a connecting unit. One side of the connecting unit is connected to the protective net 1, and the other side is respectively connected to a horizontal beam 2 and a vertically arranged railing 3 with the same structure. At least one crossbeam 2 is provided at the end of the railing 3, and at least one railing 3 is provided; Both the crossbeam 2 and the railing 3 are composed of a base plate 4 and two side plates 5. The two side plates 5 are respectively hinged to both sides of the base plate 4. The included angle between the side plates 5 and the side plates 5 is structurally limited to between π / 2 and π. A rotating plate 6 is hinged to the opposite side of the side plate 5 that connects to the base plate 4. The connecting unit consists of a first transmission unit and a second transmission unit. The first transmission unit and the second transmission unit are respectively connected to the crossbeam 2 and the railing 3. The first transmission unit and the second transmission unit are respectively used to switch the base plate 4 and the two side plates 5 in the crossbeam 2 and the railing 3 between a parallel state and a mutually perpendicular state.
[0020] The crossbeam 2 and the railing 3 together form the fence. When in operation, the first transmission unit and the second transmission unit in the connecting unit apply transmission force to the crossbeam 2 and the railing 3 respectively, driving the base plate 4 and the two side plates 5 to switch from a parallel state to a mutually perpendicular state. At this time, the base plate 4, as the main support component, maintains a horizontal or vertical posture (the crossbeam is horizontal and the railing is vertical). The two side plates 5 extend perpendicularly to the base plate 4 in the protection direction, forming a rigid support structure with a U-shaped cross section, which greatly improves the overall impact resistance and structural stability of the fence. The protective net 1 is stably connected to the crossbeam 2 and the railing 3 through the connecting unit. When an object hits, the fence first blocks large objects with high kinetic energy, while the protective net 1 blocks small objects with low kinetic energy. The two work together to achieve double protection. When the protective structure needs to be stored and stacked, the first and second transmission units can drive it in opposite directions, so that the base plate 4 of the crossbeam 2 and the railing 3 and the side plates 5 on both sides return from a vertical state to a parallel state. At this time, the overall thickness of the fence is greatly reduced (only the sum of the thickness of the base plate and the side plates on both sides, which is much smaller than the thickness of the U-shaped structure in the working state). Due to the significant reduction in the overall thickness of the fence, the compression depth of the fence on the protective net 1 during stacking is also greatly reduced, reducing the depth of the protective net 1 when it is subjected to unsupported compression by the fence. When the protective net 1 is subjected to unsupported compression by the fence, it can also relieve the force through its own slight deformation, avoiding the weight of the upper and lower layers of the structure from being concentrated on the protective net 1 during stacking. At the same time, the overlapping area of the fence and the protective net 1 is increased, further reducing the probability of the protective net 1 being subjected to unsupported compression by the fence. This retractable design not only solves the problem of the protective net being easily damaged when the traditional protective structure is stacked, but also reduces the storage space, further improving the reusability and service life of the protective structure.
[0021] Preferably, the first transmission unit includes a fixing plate 7, which is fixedly connected to a rotating plate 6 at the end of the side plate 5 near the railing 3 in the crossbeam 2. A horizontally arranged fixing rod 8 is fixedly connected to the end of the rotating plate 6 on the side away from the railing 3 in the crossbeam 2. The connecting unit also includes a fixing unit, which is used to fix the relative position between the fixing plate 7 and the fixing rod 8 after the crossbeam 2 is folded.
[0022] During operation, the base plate 4 and the two side plates 5 of the crossbeam 2 are flipped to a vertical state, forming a U-shaped support structure. At this time, the rotating plate 6 and the fixed plate 7 of the side plate of the crossbeam 2 near the railing 3 are fixedly connected, providing lateral restraint for the crossbeam 2. The fixed rod 8 on the rotating plate 6 of the crossbeam 2 away from the railing 3 is locked in relative position with the fixed plate 7 through the fixing unit, which restricts the base plate 4 and the side plate 5 of the crossbeam 2 from folding back, ensuring the rigid support strength of the crossbeam 2 and avoiding structural deformation after impact.
[0023] Preferably, the second transmission unit includes a slide plate 9, which is disposed at one end of the fixed plate 7 near the railing 3, and the slide plate 9 is capable of lateral sliding displacement relative to the fixed plate 7; one of the two rotating plates 6 in the railing 3 is fixedly connected to the fixed plate 7, and the other is connected to the slide plate 9; the fixing unit can fix the relative position between the fixed plate 7 and the slide plate 9 after the railing 3 is folded.
[0024] During operation, with the crossbeam 2 unfolded and fixed by the first transmission unit, the sliding plate 9 is pushed to slide laterally along the fixed plate 7. The sliding plate 9 and the fixed plate 7 respectively pull the two rotating plates 6 of the railing 3, thereby driving the base plate 4 and the two side plates 5 of the railing 3 to fold from a parallel state to a vertical state, forming a vertical U-shaped support fence. After the railing 3 is fully formed, the relative position of the fixed plate 7 and the sliding plate 9 is locked by the fixing unit to prevent the railing 3 from folding back due to external impact. At the same time, the U-shaped structure of the railing 3 and the crossbeam 2 are perpendicular to each other, forming a grid-like rigid frame.
[0025] Preferably, the fixing unit includes a connecting rod 10, which is rotatably connected to the fixing rod 8 around the axis of the fixing rod 8, and the axis of the connecting rod 10 is perpendicular to the axis of the fixing rod 8. A ring 11 is fixedly connected to the end of the connecting rod 10. A ring 2 12 is fixedly connected to the end of the sliding plate 9 near the fixing rod 8. The ring 11 and the ring 2 12 are concentric and are fixed by bolts 13.
[0026] During operation, after both the crossbeam 2 and the railing 3 are extended to their U-shaped working state, the connecting rod 10 is rotated around the axis of the fixed rod 8 until the first ring 11 at the end of the connecting rod 10 and the second ring 12 on the sliding plate 9 are completely concentrically aligned. Then, the bolt 13 is inserted into the first ring 11 and the second ring 12 and tightened. At this time, the fixed rod 8, the connecting rod 10 and the sliding plate 9 form a rigid connection structure, simultaneously locking the U-shaped state of the crossbeam 2 and the U-shaped state of the railing 3, preventing relative displacement due to force. This fixing method is simple in structure and firmly locked. When disassembling, only the bolt 13 needs to be unscrewed to release the fixation, which facilitates the storage and stacking of the protective structure.
[0027] Preferably, the rotating plate 6 and the sliding plate 9 are laterally elastically slidably connected, and the sliding plate 9 is provided with a locking component, which is used to lock the rotating plate 6 on the sliding plate 9 with the fixed plate 7 after the railing 3 is folded.
[0028] During operation, the second transmission unit drives the slide plate 9 to slide, which in turn pulls the rotating plate 6 of the railing 3, causing the base plate 4 and side plate 5 of the railing 3 to fold and unfold. Since the rotating plate 6 connecting the railing 3 and the slide plate 9 is a lateral elastic sliding connection, the rotating plate 6 can slide slightly elastically along the slide plate 9 during the folding process to compensate for dimensional deviations caused by installation or force, and to prevent the rotating plate 6 from breaking due to rigid tension. After the railing 3 is fully unfolded to the working position, the rotating plate 6 on the slide plate 9 is locked to the fixed plate 7 by the locking assembly, which restricts the elastic sliding of the rotating plate 6 and ensures the support stability of the railing 3.
[0029] Preferably, the engaging assembly includes two sliders 17 that are vertically slidably connected to the left and right ends of the slide plate 9, respectively. There is a gap between the slide plate 9 and the fixed plate 7. The fixed plate 7 is provided with a wedge block 14 on the side closer to the railing 3 and away from the ring 12. The wedge block 14 is used to assist the slide plate 9 in adhering to the fixed plate 7. The upper end of the rotating plate 6 connected to the slide plate 9 is fixedly connected with a pin block 15. The side wall of the fixed plate 7 is fixedly connected with engaging blocks 16 at the positions corresponding to the pin blocks 15. The pin blocks 15 can engage with the engaging blocks 16.
[0030] During operation, the slide plate 9 slides along the fixed plate 7, causing the railing 3 to unfold. During this process, the wedge block 14 contacts the edge of the slide plate 9, guiding the slide plate 9 to precisely fit the preset position of the fixed plate 7 through the wedge-shaped inclined surface. In this process, the slide plate 9 drives the rotating plate 6 on it to move towards the fixed plate 7 (the rotating plate 6 slides along the corresponding side plate 5). After the slide plate 9 is in place, the pin block 15 on the rotating plate 6 aligns with the locking block 16 on the fixed plate 7, restricting the elastic slippage of the rotating plate 6 and ensuring the support stability of the railing 3.
[0031] Preferably, the crossbeam 2 consists of two beams, which are symmetrically arranged vertically on the connecting unit.
[0032] During operation, the two crossbeams 2 unfold synchronously on the upper and lower sides of the connecting unit: the first transmission unit drives the base plate 4 and side plate 5 of the two crossbeams to fold into a U-shaped structure, and the upper and lower crossbeams form a double-layer rigid support in the horizontal direction; the double-layer crossbeam design greatly improves the horizontal impact resistance and can effectively block the impact of large-volume, high-kinetic-energy objects; at the same time, the contact area between the upper and lower crossbeams and the protective net 1 is doubled, making the force on the protective net 1 more uniform, further avoiding deformation or tearing of the protective net due to local stress concentration, and extending the service life of the protective net.
[0033] Preferably, there are at least two railings 3, arranged in a horizontal array.
[0034] During operation, at least two railings 3 are synchronously deployed in a horizontal array via the second transmission unit: the base plate 4 and side plate 5 of each railing are folded into a U-shaped structure, the spacing between adjacent railings is uniform, and they are perpendicularly intersected with the upper and lower crossbeams 2 to form a dense grid-like rigid frame; this array design reduces the gap size of the fence, which can effectively block small and medium-sized objects; at the same time, multiple railings share the lateral impact force, avoiding deformation and damage to a single railing due to excessive force, and improving the load-bearing capacity and safety performance of the entire protective structure.
Claims
1. A leveling protection structure for elevator shafts, comprising a protective net (1), characterized in that: It includes a connecting unit, one side of which is connected to the protective net (1), and the other side is connected to a horizontal beam (2) and a vertical railing (3) with the same structure and arranged horizontally. At least one crossbeam (2) is provided at the end of the railing (3), and there is at least one railing (3); The crossbeam (2) and the railing (3) are both composed of a base plate (4) and two side plates (5). The two side plates (5) are respectively hinged to both sides of the base plate (4). The included angle between the side plates (5) and the side plates (5) is structurally limited to between π / 2 and π. A rotating plate (6) is hinged to the opposite side of the side plate (5) connected to the base plate (4). The connecting unit consists of a first transmission unit and a second transmission unit. The first transmission unit and the second transmission unit are respectively connected to the crossbeam (2) and the railing (3). The first transmission unit and the second transmission unit are respectively used to switch the base plate (4) and the two side plates (5) in the crossbeam (2) and the railing (3) between parallel and mutually perpendicular states.
2. The elevator shaft leveling protection structure according to claim 1, characterized in that: The first transmission unit includes a fixed plate (7), which is fixedly connected to the rotating plate (6) at the end of the side plate (5) near the railing (3) in the crossbeam (2). A horizontally arranged fixed rod (8) is fixedly connected at the end of the rotating plate (6) away from the railing (3) in the crossbeam (2). The connecting unit also includes a fixing unit, which is used to fix the relative position between the fixed plate (7) and the fixed rod (8) after the crossbeam (2) is folded.
3. The elevator shaft leveling protection structure according to claim 2, characterized in that: The second transmission unit includes a slide plate (9), which is located at one end of the fixed plate (7) near the railing (3) and can slide laterally relative to the fixed plate (7); one of the two rotating plates (6) in the railing (3) is fixedly connected to the fixed plate (7) and the other is connected to the slide plate (9); the fixed unit can fix the relative position between the fixed plate (7) and the slide plate (9) after the railing (3) is folded.
4. The elevator shaft leveling protection structure according to claim 3, characterized in that: The fixing unit includes a connecting rod (10), which is rotatably connected to the fixing rod (8) around the axis of the fixing rod (8), and the axis of the connecting rod (10) is perpendicular to the axis of the fixing rod (8). A ring (11) is fixedly connected to the end of the connecting rod (10). A ring (12) is fixedly connected to the end of the sliding plate (9) near the fixing rod (8). The ring (11) and the ring (12) are concentric and are fixed by bolts (13).
5. The elevator shaft leveling protection structure according to claim 3, characterized in that: The rotating plate (6) and the sliding plate (9) are laterally elastically connected. The sliding plate (9) is provided with a locking component. The locking component is used to lock the rotating plate (6) on the sliding plate (9) with the fixed plate (7) after the railing (3) is folded.
6. The elevator shaft leveling protection structure according to claim 5, characterized in that: The engaging assembly includes two sliders (17) that are vertically slidably connected to the left and right ends of the slide plate (9). There is a gap between the slide plate (9) and the fixed plate (7). The fixed plate (7) is provided with a wedge block (14) on the side closer to the railing (3) and away from the ring (12). The wedge block (14) is used to assist the slide plate (9) in fitting the fixed plate (7). The upper end of the rotating plate (6) connected to the slide plate (9) is fixedly connected with a pin block (15). The side wall of the fixed plate (7) is fixedly connected with engaging blocks (16) at the positions corresponding to the pin blocks (15). The pin blocks (15) can engage with the engaging blocks (16).
7. The elevator shaft leveling protection structure according to claim 1, characterized in that: The crossbeam (2) consists of two beams, which are symmetrically arranged on the connecting unit.
8. The elevator shaft leveling protection structure according to claim 1, characterized in that: The railing (3) consists of at least two railings arranged in a horizontal array.