Height-adjustable protective safety device for building elevator shafts

Abstract

The application discloses a building elevator shaft mouth height-adjustable protection safety device in the technical field of elevator shaft protection devices, which comprises a fixed frame, a telescopic frame two is slidably connected to the top end of the fixed frame, a limiting shaft is fixedly connected to the left and right ends of the fixed frame, and a rotating rod is rotatably connected to the rear end of the fixed frame, the bottom of the fixed frame is provided with a slidable telescopic frame one, the telescopic frame one can be pushed upward to slide through the fixed frame, and the construction personnel can conveniently enter and exit, the convex rods on the two sides are fixed through a limiting support mechanism, the fixed frame is fixed in the shaft entrance through the clamping effect of the convex rods and the limiting shaft, when the construction personnel needs to enter and exit, the limiting support mechanism on one side is opened, the sliding effect of the telescopic frame one is released, the telescopic frame one can be slid upward to pass through the fixed frame, the opening of the limiting support mechanism on one side does not affect the fixing effect of the fixed frame, and the clamping effect of the convex rod on the other side is continuously achieved.

Description

Technical Field

[0001] This invention relates to the field of elevator shaft protection devices, specifically to a height-adjustable protective safety device for building elevator shaft openings. Background Technology

[0002] As a vertical passage connecting different floors in building construction, the elevator shaft is a key part of the "four openings" protection. Its safety protection is directly related to the life safety of construction workers. The height of the elevator shaft opening protection door should not be less than 1.5 meters, and it should have standardized and tool-like design features to ensure that it can effectively prevent people from falling accidentally. However, the existing elevator shaft protection devices have significant limitations in practical applications and it is difficult to balance protection strength and construction convenience.

[0003] Limitations of fixed fences: Traditional protective devices often use expansion bolts to directly fix the fence to the elevator shaft wall. While this design provides strong fixation and security and effectively prevents unauthorized personnel from entering, its removal and reinstallation are extremely inconvenient during construction, requiring a lot of time to dismantle and reposition the protective structure, which seriously affects construction efficiency.

[0004] Disadvantages of sliding gate-style fences: Sliding fence as attached Figure 8 As shown, adding a sliding door inside a fixed fence facilitates the entry and exit of construction personnel, but its stability is insufficient. Installing a traditional door lock would significantly increase the complexity of use, and construction personnel may forget to lock it due to negligence, resulting in the failure of protection. This contradiction makes it difficult for sliding door type fences to achieve efficient and flexible construction access while ensuring safety.

[0005] To address the aforementioned issues, there is an urgent need for a new type of elevator shaft protection device that can significantly improve the ease of access for construction personnel while maintaining high-strength protective performance. Summary of the Invention

[0006] The purpose of this invention is to provide a protective safety device with an adjustable height for building elevator shaft openings, in order to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a protective safety device for an adjustable height at the opening of a building elevator shaft, comprising a fixed frame, a telescopic frame two slidably sleeved at the top of the fixed frame, limit shafts fixedly connected to the left and right ends of the fixed frame respectively, a rotating rod rotatably connected to the rear end of the fixed frame, a movable rod one slidably connected to the rear end of the rotating rod, a protruding rod fixedly connected to one side wall of the movable rod, a telescopic frame one slidably connected to the bottom of the fixed frame, and a limit support mechanism provided on the rotating rod, the limit support mechanism being used to fix the movable rod one inside the rotating rod while restricting the sliding of the telescopic frame one at the bottom of the fixed frame.

[0008] As a further embodiment of the present invention, the limiting support mechanism includes a rotating plate, which is rotatably disposed at the rear end of a fixed frame above a rotating rod. The top end of the rotating rod has a mating interface, and the upper end of the movable rod has a toothed groove. The bottom of the rotating plate is fixedly connected to a second protrusion for passing through the mating interface and engaging with the toothed groove. The front end of the rotating plate is slidably connected to the second movable rod. The rotating plate is fixedly connected to a first spring for resetting the second movable rod. The top end of the rotating rod is fixedly connected to a first protrusion for pushing the second movable rod to slide. The rotating rod is fixedly connected to a second spring for resetting the first movable rod.

[0009] As a further embodiment of the present invention, a support rod is fixedly connected to the bottom end of the fixed frame, and the lower end face of the support rod is at the same horizontal plane as the lower end face of the telescopic frame at the maximum sliding distance.

[0010] As a further embodiment of the present invention, one end of the telescopic frame is provided with a plurality of equally spaced docking holes, the top end of the fixed frame is provided with an opening for docking with the docking holes, and a fixing bolt is spirally connected inside the docking holes.

[0011] As a further embodiment of the present invention, a fixing plate is fixedly connected inside the fixing frame, and a warning coating is applied to the outside of the fixing plate.

[0012] As a further embodiment of the present invention, a limiting frame for docking with the rotating rod is fixedly connected to the rear end of the fixed frame, and a friction pad for limiting the rotation of the rotating rod is provided inside the limiting frame.

[0013] As a further embodiment of the present invention, the outer wall of the movable rod can be completely fitted with the inner wall of the rotating rod, and the inner wall of the rotating rod is a smooth wall.

[0014] As a further embodiment of the present invention, the rear end of the fixed frame is provided with a connection port for docking with the movable rod 2.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention features a sliding telescopic frame at the bottom of a fixed frame, allowing construction personnel to easily enter and exit by pushing the telescopic frame upwards and sliding it through the fixed frame. Simultaneously, a limiting support mechanism secures the protruding rods on both sides, and the clamping effect of the protruding rods and the limiting shaft fixes the fixed frame at the shaft entrance. Furthermore, the limiting support mechanism allows for convenient operation from the outside of the fixed frame, enabling construction personnel both inside and outside the fixed frame to easily fix or release the frame, facilitating the opening of the telescopic frame for entry and exit. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle; Figure 3 This is a schematic diagram of the rear mechanism of the present invention (with hidden support rods). Figure 4 for Figure 3 Enlarged structural diagram at point B; Figure 5 This is a schematic diagram of the internal structure of the rotating plate; Figure 6 This is a schematic diagram of the rotation state of the limit support mechanism; Figure 7 This is a schematic diagram showing the connection between the fixed frame and the elevator shaft wall; Figure 8 This is a schematic diagram of a push-pull fence structure.

[0017] The attached diagram lists the components represented by each number as follows: 1. Fixed frame; 2. Telescopic frame one; 3. Support rod; 4. Telescopic frame two; 5. Fixed plate; 6. Limiting shaft; 7. Rotating plate; 8. Docking hole; 9. Rotating rod; 10. Docking interface; 11. Protruding rod; 12. Movable rod one; 13. Gear groove; 14. Limiting frame; 15. Movable rod two; 16. First spring; 17. Second spring; 18. Protrusion one; 19. Protrusion two; 20. Fixing bolt; 21. Sliding fence. Detailed Implementation

[0018] Please see Figures 1-8 This invention provides a technical solution: a protective safety device for adjustable height of building elevator shaft opening, including a fixed frame 1, a telescopic frame 4 slidably sleeved at the top of the fixed frame 1, limit shafts 6 fixedly connected to the left and right ends of the fixed frame 1 respectively, a rotating rod 9 rotatably connected to the rear end of the fixed frame 1, a movable rod 12 slidably connected to the rear end of the rotating rod 9, a protruding rod 11 fixedly connected to the side wall of the movable rod 12, a telescopic frame 2 slidably connected to the bottom of the fixed frame 1, and a limit support mechanism provided on the rotating rod 9. The limit support mechanism is used to fix the movable rod 12 inside the rotating rod 9 and restrict the sliding of the telescopic frame 2 at the bottom of the fixed frame 1. See Figure 1 , Figures 3-4During installation, the protective device is positioned so that the fixed frame 1 is fitted against the shaft entrance, and the limiting shafts 6 on both sides are fitted against the entrance wall. By retracting the bottom telescopic frame 2 upwards into the fixed frame 1, an opening is formed at the bottom of the fixed frame 1, facilitating access for construction personnel. Rotating the rotating rod 9 and adjusting the position of the movable rod 12 inside the rotating rod 9 allows the protruding rod 11 to contact the internal wall of the shaft entrance. At this point, the movable rod 12 is fixed inside the rotating rod 9 by the limiting support mechanism, thus fixing the position of the protruding rod 11. The fixed frame 1 is then fixed to the shaft entrance by the limiting shafts 6 and the protruding rod 11 from both sides of the wall. Simultaneously, this restricts the sliding of the telescopic frame 2 inside the fixed frame 1, preventing it from sliding upwards further. The advantage of this is that the limiting support mechanism fixes the protruding rods 11 on both sides, and the protruding rods 11 and the limiting shafts... The clamping effect of 6 fixes the fixed frame 1 at the shaft entrance. When construction personnel need to enter or exit, the limiting support mechanism on one side can be opened to release the restriction on the sliding effect of the telescopic frame 2, allowing the telescopic frame 2 to slide upward through the fixed frame 1. Opening the limiting support mechanism on one side does not affect the fixing effect of the fixed frame 1, as the protruding rod 11 on the other side continues to provide a clamping effect. Under the influence of gravity, the telescopic frame 2 is always located below the fixed frame 1 in its natural state, providing protection. Non-construction personnel will not directly think of pushing the telescopic frame 2 upward to form an entrance, ensuring high safety. At the same time, the limiting support mechanism is also convenient to operate from the outside of the fixed frame 1. Construction personnel located inside or outside the fixed frame 1 can easily fix or release the fixing effect of the fixed frame 1 through the limiting support mechanism, facilitating the opening of the telescopic frame 2 for entry and exit.

[0019] As a further embodiment of the present invention, the limiting support mechanism includes a rotating plate 7, which is rotatably disposed at the rear end of the fixed frame 1 above the rotating rod 9. The rotating rod 9 has a mating interface 10 at its top end, and the movable rod 12 has a toothed groove 13 at its upper end. The rotating plate 7 has a protrusion 19 fixedly connected at its bottom for meshing with the mating interface 10 and the toothed groove 13. The rotating plate 7 has a movable rod 15 slidably connected inside its front end. The rotating plate 7 has a first spring 16 fixedly connected inside for resetting the movable rod 15. The rotating rod 9 has a protrusion 18 fixedly connected at its top end for pushing the movable rod 15 to slide. The rotating rod 9 has a second spring 17 fixedly connected inside for resetting the movable rod 12. See Figures 4-6After rotating the rotating rod 9, adjust the movable rod 12 so that the protrusion 11 contacts the wall from inside the shaft wall. Then, flip the rotating plate 7 and rotate it by an angle θ, so that the protrusion 19 passes through the interface 10 and engages with the toothed groove 13 on the movable rod 12. During the rotation, the protrusion 18 at the top of the rotating rod 9 will first contact the movable rod 15. As the rotating plate 7 continues to rotate, the protrusion 18 continuously pushes the movable rod 15 to slide. When the rotating plate 7 is flipped, the front end of the movable rod 15 also passes through the rotating plate 7 and the fixed frame 1 and enters the interior of the fixed frame 1. The front end of the movable rod 15 then controls the telescopic frame 2 inside the fixed frame 1. The sliding is restricted. When the second protrusion 19 at the bottom of the rotating plate 7 engages with the tooth groove 13, the second movable rod 15 inside the rotating plate 7 passes through the fixed frame 1 to restrict the sliding of the telescopic frame 2. When the fixed frame 1 is fixed by the cooperation of the protrusion 11 and the limiting shaft 6, the telescopic frame 2 at the bottom cannot slide up to form an opening at the bottom of the fixed frame 1. When the construction personnel inside the shaft need to come out, the rotating plate 7 is flipped upward to disengage from the tooth groove 13, and the telescopic frame 2 can slide upward to enter and exit through the opening at the bottom of the fixed frame 1. After the construction personnel come out, the rotating plate 7 is rotated back to the position where it engages with the tooth groove 13 and locked.

[0020] As a further embodiment of the present invention, a support rod 3 is fixedly connected to the bottom end of the fixed frame 1, and the lower end face of the support rod 3 is at the same horizontal plane as the lower end face of the telescopic frame 2 when it slides down the maximum distance. See Figure 1 , Figure 3 Both sides of the bottom of the fixed frame 1 and the telescopic frame 2 can slide upwards, so the bottom of the fixed frame 1 has no stable support. By setting the support rod 3 to support the bottom of the fixed frame 1, it is easy to position the fixed frame 1 during installation. The support rod 3 is parallel to the lower end face of the telescopic frame 2. The purpose is to make the lower end face of the telescopic frame 2 coincide with the lower end face of the support rod 3 in the natural state, so as to avoid the bottom of the fixed frame 1 from having gaps that would cause debris such as gravel from the construction site to enter the elevator shaft from the bottom of the fixed frame 1.

[0021] As a further embodiment of the present invention, one end of the telescopic frame 4 is provided with a plurality of equally spaced docking holes 8, and the top end of the fixed frame 1 is provided with an opening for docking with the docking holes 8, and a fixing bolt 20 is spirally connected inside the docking holes 8. See Figure 2 The telescopic frame 4 is fixed above the fixed frame 1 by connecting the opening on the fixed frame 1 with the docking holes 8 of different heights, and by passing the fixing bolts 20 through the docking holes 8, the overall height of the fixed frame 1 can be adjusted and the adjusted height can be fixed.

[0022] As a further embodiment of the present invention, a fixing plate 5 is fixedly connected inside the fixing frame 1, and a warning coating is applied to the outside of the fixing plate 5. The fixing plate 5 blocks the limiting support mechanism, preventing non-construction personnel from directly seeing the limiting support mechanism at the rear of the fixing frame 1 from the outside. This can effectively reduce the accidental contact of the limiting support mechanism by non-construction personnel, and the warning coating can remind non-construction personnel to avoid accidental contact.

[0023] As a further embodiment of the present invention, a limiting frame 14 for docking with the rotating rod 9 is fixedly connected to the rear end of the fixed frame 1, and a friction pad for limiting the rotation of the rotating rod 9 is provided inside the limiting frame 14. When not in use, rotate the rod 9 into the limit frame 14. The friction pad restricts the rotation of the rod 9 and fixes it inside the limit frame 14, reducing the space occupied by the fixing frame 1 and providing protection for the rod 9.

[0024] As a further embodiment of the present invention, the outer wall of the movable rod 12 can be completely fitted with the inner wall of the rotating rod 9, and the inner wall of the rotating rod 9 is a smooth wall. The parts are completely fitted together to prevent the movable rod 12 from shaking inside the rotating rod 9 after it is fixed, which would affect the protective effect.

[0025] As a further embodiment of the present invention, the rear end of the fixed frame 1 is provided with a connection port for docking with the movable rod 15. The movable rod 15 can pass through the connection port and enter the interior of the fixed frame 1 to restrict the vertical sliding of the telescopic frame 2 inside the fixed frame 1.

[0026] Working principle: When the protective device is installed, the fixed frame 1 is attached to the shaft entrance, and the limiting shafts 6 on both sides are attached to the entrance wall. By retracting the telescopic frame 2 at the bottom upward into the fixed frame 1, an opening can be formed at the bottom of the fixed frame 1 to facilitate the entry and exit of construction personnel. Rotate the rotating rod 9 and adjust the position of the movable rod 12 inside the rotating rod 9 so that the protruding rod 11 can contact the inner wall of the shaft entrance. After rotating the rotating rod 9, adjust the movable rod 12 so that the protruding rod 11 contacts the wall from inside the shaft wall. Then, flip the rotating plate 7 and rotate it by an angle θ, so that the protruding block 19 passes through the interface 10 and engages with the toothed groove 13 on the movable rod 12. During the rotation, the protruding block 18 at the top of the rotating rod 9 will first contact the movable rod 15. As the rotating plate 7 continues to rotate, the protruding block 18 continuously pushes the movable rod 15 to slide. When the rotating plate 7 is flipped, the front end of the movable rod 15 also passes through the rotating plate 7 and the fixed frame 1 and enters the interior of the fixed frame 1. The front end of the movable rod 15 then controls the telescopic frame 2 inside the fixed frame 1. The sliding is restricted. When the second protrusion 19 at the bottom of the rotating plate 7 engages with the tooth groove 13, the second movable rod 15 inside the rotating plate 7 passes through the fixed frame 1 to restrict the sliding of the telescopic frame 2. When the fixed frame 1 is fixed by the cooperation of the protrusion 11 and the limiting shaft 6, the telescopic frame 2 at the bottom cannot slide up to form an opening at the bottom of the fixed frame 1. When the construction personnel inside the shaft need to come out, the rotating plate 7 is flipped upward to disengage from the tooth groove 13, and the telescopic frame 2 can slide upward to enter and exit through the opening at the bottom of the fixed frame 1. After the construction personnel come out, the rotating plate 7 is rotated back to the position where it engages with the tooth groove 13 and locked.

Claims

1. A height-adjustable safety device for a building elevator shaft, comprising a fixed frame (1), wherein a telescopic frame (4) is slidably sleeved on the top of the fixed frame (1), and limit shafts (6) are fixedly connected to the left and right ends of the fixed frame (1), a rotating rod (9) is rotatably connected to the rear end of the fixed frame (1), and a movable rod (12) is slidably connected to the rear end of the rotating rod (9), and a protruding rod (11) is fixedly connected to the side wall of the movable rod (12), characterized in that: The bottom of the fixed frame (1) is slidably connected to a telescopic frame (2). A limiting support mechanism is provided on the rotating rod (9). The limiting support mechanism is used to fix the movable rod (12) inside the rotating rod (9) and restrict the sliding of the telescopic frame (2) at the bottom of the fixed frame (1).

2. The adjustable-height protective safety device for building elevator shafts according to claim 1, characterized in that: The limiting support mechanism includes a rotating plate (7), which is rotatably mounted on the rear end of the fixed frame (1) above the rotating rod (9). The rotating rod (9) has a mating interface (10) at its top end. The movable rod (12) has a toothed groove (13) at its upper end. The rotating plate (7) has a protrusion (19) at its bottom that is used to mesh with the mating interface (10) and the toothed groove (13). The rotating plate (7) has a movable rod (15) slidably connected inside its front end. The rotating plate (7) has a first spring (16) fixedly connected inside its interior for the movable rod (15) to reset. The rotating rod (9) has a protrusion (18) fixedly connected at its top end for pushing the movable rod (15) to slide. The rotating rod (9) has a second spring (17) fixedly connected inside its interior for the movable rod (12) to reset.

3. The adjustable-height protective safety device for building elevator shafts according to claim 1, characterized in that: The bottom end of the fixed frame (1) is fixedly connected to a support rod (3), and the lower end face of the support rod (3) is at the same horizontal plane as the lower end face of the telescopic frame (2) when it slides down the maximum distance.

4. The adjustable-height protective safety device for building elevator shafts according to claim 1, characterized in that: The telescopic frame 2 (4) has several equally spaced docking holes (8) at one end, and the fixed frame (1) has an opening at the top for docking with the docking holes (8). The docking holes (8) are spirally connected with fixing bolts (20).

5. The adjustable-height protective safety device for building elevator shafts according to claim 1, characterized in that: The fixed frame (1) is fixedly connected to a fixed plate (5), and the fixed plate (5) is coated with a warning coating.

6. The adjustable-height protective safety device for building elevator shafts according to claim 1, characterized in that: The fixed frame (1) is fixedly connected to a limiting frame (14) for docking with the rotating rod (9) at its rear end. The limiting frame (14) is provided with a friction pad for limiting the rotation of the rotating rod (9).

7. The adjustable-height protective safety device for building elevator shafts according to claim 2, characterized in that: The outer wall of the movable rod (12) can be completely fitted with the inner wall of the rotating rod (9), and the inner wall of the rotating rod (9) is a smooth wall.

8. The adjustable-height protective safety device for building elevator shafts according to claim 2, characterized in that: The fixed frame (1) has a connection port at its rear end for docking with the movable rod (15).

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