Anti-floating communication manhole anti-falling structure
By designing a combined structure of a circular fall arrestor, a fall arrestor net, and a buffer spring, the safety and applicability issues of the anti-buoyancy communication manhole fall arrestor structure were solved, achieving high safety and wide applicability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN HUAXING NETWORK TECH CO LTD
- Filing Date
- 2025-07-08
- Publication Date
- 2026-06-12
AI Technical Summary
Existing anti-buoyancy communication manhole fall prevention structures pose a risk of accidental fall into the manhole, which may result in injury or death. Furthermore, they are not adaptable to manholes of different sizes and are inconvenient to use.
A fall protection structure was designed, comprising a circular fall protection frame, a fall protection net, a buffer spring, and an adjustable mounting base. The buffer spring absorbs kinetic energy and the fall protection net provides protection, making it suitable for installation in well chambers of different sizes.
It effectively reduces the risk of pedestrian injury, adapts to the installation of well chambers of different sizes, and improves safety and practicality.
Smart Images

Figure CN224351280U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fall prevention technology for manholes, specifically to an anti-buoyancy communication manhole fall prevention structure. Background Technology
[0002] Underground pipe networks offer advantages such as saving municipal space, beautifying the urban environment, and improving pipe network safety, but they also bring certain problems. The installation of underground pipe networks necessitates the installation of inspection wells for regular maintenance. Similar to drainage wells, inspection well covers are generally made of cast iron, plastic, or precast cement.
[0003] Furthermore, the existing anti-buoyancy communication manhole fall prevention structure poses a risk of accidental fall into the manhole, which could even cause injury or death in severe cases. It is not very practical, and the existing anti-buoyancy communication manhole fall prevention structure cannot be adapted to the installation and use of manholes of different sizes, which limits its applicability and makes it inconvenient to use. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides an anti-buoyancy communication manhole anti-fall structure, which solves the problems mentioned in the background art.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: an anti-buoyancy communication manhole fall-prevention structure, comprising a circular fall-prevention frame, a filter hole at the bottom of the circular fall-prevention frame, a fall-prevention net fixedly installed on one side of the bottom of the circular fall-prevention frame, a connecting seat fixedly installed on one side of the circular fall-prevention frame, a through hole inside the connecting seat, a sliding column slidably connected inside the through hole, a limit seat fixedly installed on the top of the sliding column, a support fixedly installed on the bottom of the sliding column, a buffer spring fixedly installed on the top of the support, the top of the buffer spring being located at the bottom of the connecting seat, and an adjustment mounting seat provided on one side of the support.
[0008] Optionally, the bottom of the adjusting mounting base is provided with a sliding groove, and the outer side of the support is slidably connected to the inside of the sliding groove.
[0009] Optionally, a mounting hole is provided on one side of the adjusting mounting base, and a limit hole is provided on one side of the adjusting mounting base.
[0010] Optionally, a limiting post is inserted into the limiting hole, and a movable groove is provided inside the support.
[0011] Optionally, a lead screw is rotatably connected inside the movable slot, and a movable frame is driven to the outside of the lead screw.
[0012] Optionally, the outer side of the movable frame is slidably connected to the inside of the movable groove, and one end of the limiting post is fixedly installed on one side of the movable frame.
[0013] This utility model provides an anti-buoyancy communication manhole fall prevention structure, which has the following beneficial effects:
[0014] 1. This anti-buoyancy communication manhole fall prevention structure, through the setting of fall prevention net and buffer spring, enables the anti-buoyancy communication manhole fall prevention structure to reduce the risk of pedestrian injury and effectively prevent pedestrian accidental falls, thus achieving a high level of safety and strong practicality.
[0015] 2. This anti-buoyancy communication manhole fall prevention structure, by adjusting the setting of the mounting base, can be adapted to the installation and use of manholes of different sizes, thus achieving a wide range of applications and making it more convenient to use. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0017] Figure 2 This is a schematic diagram of the isotropic structure of this utility model;
[0018] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;
[0019] Figure 4 This is a cross-sectional structural diagram of the present invention;
[0020] Figure 5 This utility model Figure 4 Enlarged structural diagram at point B
[0021] In the diagram: 1. Circular fall arrestor; 2. Filter hole; 3. Fall arrestor net; 4. Connecting seat; 5. Through hole; 6. Sliding column; 7. Limiting seat; 8. Support; 9. Buffer spring; 10. Adjustable mounting seat; 11. Sliding groove; 12. Mounting hole; 13. Limiting hole; 14. Limiting column; 15. Movable groove; 16. Lead screw; 17. Movable frame. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0023] Example
[0024] Please see Figures 1 to 3This utility model provides a technical solution: an anti-buoyancy communication manhole anti-fall structure, including a circular anti-fall frame 1, a filter hole 2 at the bottom of the circular anti-fall frame 1, an anti-fall net 3 fixedly installed on one side of the bottom of the circular anti-fall frame 1, a connecting seat 4 fixedly installed on one side of the circular anti-fall frame 1, a through hole 5 inside the connecting seat 4, a sliding column 6 slidably connected inside the through hole 5, a limit seat 7 fixedly installed on the top of the sliding column 6, a support 8 fixedly installed on the bottom of the sliding column 6, a buffer spring 9 fixedly installed on the top of the support 8, the top of the buffer spring 9 being located at the bottom of the connecting seat 4, and an adjustment mounting seat 10 provided on one side of the support 8.
[0025] Specifically, when a pedestrian falls, the circular fall arrestor 1 will drive the connecting seat 4 to move downward. The connecting seat 4 slides downward on the outside of the sliding column 6 through the through hole 5. At this time, the buffer spring 9 will be compressed. When the buffer spring 9 is subjected to external force, the kinetic energy is transferred to the spring and oil through the piston to achieve energy absorption and deceleration. At the same time, the fall arrestor net 3 installed inside the circular fall arrestor 1 can play a protective role.
[0026] Please refer to Figure 2 to Figure 5 The bottom of the adjusting mounting base 10 is provided with a sliding groove 11, and the outer side of the support 8 is slidably connected to the inside of the sliding groove 11.
[0027] Specifically, the sliding groove 11 provided in the mounting base 10 is adjusted to allow sliding on the outside of the support 8.
[0028] Please refer to Figure 2 to Figure 5 The mounting base 10 has a mounting hole 12 on one side and a limit hole 13 on the other side.
[0029] Specifically, the adjusting mounting seat 10 is installed on the inner wall of the well chamber through the mounting hole 12, which is located on one side of the adjusting mounting seat 10.
[0030] Please refer to Figure 2 to Figure 5 A limiting post 14 is inserted into the inside of the limiting hole 13, and a movable groove 15 is opened inside the support 8.
[0031] Specifically, one end of the limiting post 14 is inserted into the inside of the limiting hole 13.
[0032] Please refer to Figure 2 to Figure 5 The movable slot 15 is internally connected to a lead screw 16, and the outer side of the lead screw 16 is connected to a movable frame 17.
[0033] Specifically, the lead screw 16 will drive the movable frame 17 to move, causing the movable frame 17 to slide inside the movable groove 15.
[0034] Please refer to Figure 2 to Figure 5The outer side of the movable frame 17 is slidably connected to the inside of the movable groove 15, and one end of the limiting post 14 is fixedly installed on one side of the movable frame 17.
[0035] Specifically, the movable frame 17 will drive the limiting post 14 to move, so that one end of the limiting post 14 is inserted into the inside of the limiting hole 13.
[0036] In use, the position of the adjusting mounting seat 10 is first adjusted according to the inner diameter of the well chamber. The adjusting mounting seat 10 slides on the outside of the support 8 through the sliding groove 11 opened in the adjusting mounting seat 10 to adjust the adjusting mounting seat 10 to the appropriate position. Then, the screw 16 is turned, which drives the movable frame 17 to move, so that the movable frame 17 slides inside the movable groove 15. The movable frame 17 drives the limiting column 14 to move, so that one end of the limiting column 14 is inserted into the inside of the limiting hole 13, thereby limiting the adjusting mounting seat 10. Then, the adjusting mounting seat 10 is installed on the inner side wall of the well chamber through the mounting hole 12. When a pedestrian falls in, the circular fall arrestor 1 will drive the connecting seat 4 to move downward. The connecting seat 4 slides downward on the outside of the sliding column 6 through the through hole 5. At this time, the buffer spring 9 will be compressed. When the buffer spring 9 is subjected to external force, the kinetic energy is transferred to the spring and oil through the piston to achieve energy absorption and deceleration. At the same time, the fall arrestor net 3 installed inside the circular fall arrestor 1 can play a protective role.
[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. An anti-buoyancy communication manhole fall arresting structure, comprising a circular fall arresting frame (1), characterized in that: The circular fall arrestor (1) has a filter hole (2) at its bottom. A fall arrestor net (3) is fixedly installed on one side of the bottom of the circular fall arrestor (1). A connecting seat (4) is fixedly installed on one side of the circular fall arrestor (1). A through hole (5) is opened inside the connecting seat (4). A sliding column (6) is slidably connected inside the through hole (5). A limit seat (7) is fixedly installed on the top of the sliding column (6). A support (8) is fixedly installed on the bottom of the sliding column (6). A buffer spring (9) is fixedly installed on the top of the support (8). The top of the buffer spring (9) is located at the bottom of the connecting seat (4). An adjustment mounting seat (10) is provided on one side of the support (8).
2. The anti-buoyancy communication manhole fall prevention structure according to claim 1, characterized in that: The bottom of the adjusting mounting base (10) is provided with a sliding groove (11), and the outer side of the support (8) is slidably connected to the inside of the sliding groove (11).
3. The anti-buoyancy communication manhole fall prevention structure according to claim 2, characterized in that: The adjusting mounting base (10) has a mounting hole (12) on one side and a limit hole (13) on one side.
4. The anti-buoyancy communication manhole fall prevention structure according to claim 3, characterized in that: The limiting hole (13) is connected to a limiting post (14), and the support (8) has a movable groove (15) inside.
5. The anti-buoyancy communication manhole fall prevention structure according to claim 4, characterized in that: The movable slot (15) is rotatably connected to a lead screw (16), and the outer side of the lead screw (16) is connected to a movable frame (17).
6. The anti-buoyancy communication manhole fall prevention structure according to claim 5, characterized in that: The outer side of the movable frame (17) is slidably connected to the inside of the movable groove (15), and one end of the limiting post (14) is fixedly installed on one side of the movable frame (17).