A manhole cover anti-theft mechanism
By designing components such as fixing frames and adjusting gears on the manhole cover, the connection stability between the manhole cover and the manhole edge is enhanced, and the anti-slip performance is improved by using anti-slip textures and anti-fall nets, thus solving the problem of easy loss of manhole covers and achieving efficient anti-theft and anti-slip effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN HUAXING NETWORK TECH CO LTD
- Filing Date
- 2025-06-05
- Publication Date
- 2026-05-26
AI Technical Summary
Existing manhole covers have low anti-theft performance and are easily stolen, leading to property loss.
An anti-theft mechanism for manhole covers was designed. Through the coordinated arrangement of a fixed frame, adjusting gears, adjusting racks, connecting plates, limit blocks, and rotating discs, the connection stability between the manhole cover and the manhole edge is enhanced, and the anti-slip performance is improved through anti-slip textures and anti-fall nets.
It effectively improves the anti-theft and anti-slip properties of manhole covers, prevents them from being lost, and ensures pedestrian safety.
Smart Images
Figure CN224281374U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of manhole cover technology, specifically to a manhole cover anti-theft mechanism. Background Technology
[0002] Manholes, also called access shafts, are vertical passageways dug at intervals in electrical installations for maintenance and cable routing, allowing people to enter and exit. Common types include cable manholes and communication manholes. There are also hand manholes. When not in use, manholes are typically protected with covers.
[0003] The existing manhole covers have relatively low anti-theft performance during use, and are prone to being stolen, resulting in certain property losses. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides an anti-theft mechanism for manhole covers, which solves the problems mentioned in the background section.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: a manhole cover anti-theft mechanism, comprising a manhole cover body and a manhole opening. A fixing frame is threadedly connected to the lower surface of the manhole cover body. A connecting shaft is rotatably connected inside the fixing frame. An adjusting gear is provided on the outer surface of the connecting shaft. An adjusting rack is meshed on the outer surface of the adjusting gear. A connecting plate is provided on the outer surface of the adjusting rack. The connecting plate is slidably connected inside the fixing frame. A limit block is provided on one side of the connecting plate. A connecting through hole is opened inside the manhole cover body. The connecting shaft is rotatably connected inside the connecting through hole. A rotating disk is provided at the upper end of the connecting shaft. A triangular groove is opened inside the rotating disk. A directional mark is provided on the outer surface of the rotating disk. A limit post is provided inside the fixing seat. A manhole edge is threadedly connected inside the manhole opening. The manhole cover body is placed inside the manhole edge.
[0008] Optionally, the number of fixing frames on the manhole cover body is two, which are symmetrical to each other.
[0009] Optionally, a fixing through hole is provided on the upper surface of the manhole cover body, and an internal thread is provided inside the fixing through hole.
[0010] Optionally, the upper surface of the manhole cover body is provided with anti-slip textures, and the number of anti-slip textures is several, which are evenly distributed on the upper surface of the manhole cover body.
[0011] Optionally, a connecting slot is provided inside the well edge, and an anti-fall net is attached to the well edge through the connecting slot.
[0012] Optionally, both the manhole rim and the manhole cover body are made of cast iron.
[0013] This utility model provides an anti-theft mechanism for manhole covers, which has the following beneficial effects:
[0014] 1. The anti-theft mechanism for manhole covers, through the coordinated arrangement of a fixed frame, adjusting gears, adjusting racks, connecting plates, limit blocks, and rotating discs, enables the anti-theft mechanism for manhole covers to improve their anti-theft performance.
[0015] 2. The anti-theft mechanism for this manhole cover, through the design of anti-slip texture, achieves a highly effective anti-slip effect. 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 showing the position and structure of the well edge and the fixing frame of this utility model;
[0018] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;
[0019] Figure 4 This is a schematic diagram of the external structure of the fixing frame of this utility model.
[0020] In the diagram: 1. Manhole cover body; 2. Manhole opening; 3. Fixing frame; 4. Adjusting gear; 5. Adjusting rack; 6. Connecting plate; 7. Limiting block; 8. Rotating disc; 9. Triangular groove; 10. Limiting post; 11. Manhole edge; 12. Fixing through hole; 13. Anti-slip texture; 14. Anti-fall net. Detailed Implementation
[0021] 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.
[0022] Example
[0023] Please see Figures 1 to 4This utility model provides a technical solution: a manhole cover anti-theft mechanism, including a manhole cover body 1 and a manhole 2. A fixing frame 3 is threadedly connected to the lower surface of the manhole cover body 1. A connecting shaft is rotatably connected inside the fixing frame 3. An adjusting gear 4 is provided on the outer surface of the connecting shaft. An adjusting rack 5 is meshed on the outer surface of the adjusting gear 4. A connecting plate 6 is provided on the outer surface of the adjusting rack 5. The connecting plate 6 is slidably connected inside the fixing frame 3. A limit block 7 is provided on one side of the connecting plate 6. A connecting through hole is opened inside the manhole cover body 1. The connecting shaft is rotatably connected inside the connecting through hole. A rotating disk 8 is provided at the upper end of the connecting shaft. A triangular groove 9 is opened inside the rotating disk 8. A directional mark is provided on the outer surface of the rotating disk 8. A limit post 10 is provided inside the fixing seat. A manhole edge 11 is threadedly connected inside the manhole 2. The manhole cover body 1 is placed inside the manhole edge 11.
[0024] Specifically, the manhole cover body 1 is placed into the manhole edge 11. Then, by using a special triangular screwdriver inserted into the triangular slot 9 of the rotating disk 8, the rotating disk 8 is rotated, thereby driving the connecting shaft and the adjusting gear 4 to rotate. Under the action of the adjusting rack 5, the connecting plate 6 is driven to slide in the fixed frame 3, so that the limiting block 7 is inserted into the lower part of the manhole edge 11, thereby connecting the manhole cover body 1, the manhole edge 11 and the manhole 2 into one unit (the manhole edge 11 is fixed to the manhole 2 with bolts beforehand, and when the manhole cover body 1 is fastened to the manhole edge 11, the threaded hole on the manhole edge 11 is covered by the manhole cover body 1, as shown in the figure), thereby greatly improving the anti-theft performance of the manhole cover.
[0025] Please see Figure 2 The number of fixing frames 3 on the manhole cover body 1 is two, and they are symmetrical to each other.
[0026] Specifically, the setting of two sets of fixing frames 3 improves the stability of the connection between the manhole cover body 1 and the manhole edge 11.
[0027] Please see Figure 1 The upper surface of the manhole cover body 1 is provided with a fixing through hole 12, and the inside of the fixing through hole 12 is provided with an internal thread.
[0028] Specifically, the fixed through hole 12 and the internal thread facilitate the quick removal of the manhole cover.
[0029] Please see Figure 1 The upper surface of the manhole cover body 1 is provided with anti-slip textures 13. There are several anti-slip textures 13, which are evenly distributed on the upper surface of the manhole cover body 1.
[0030] Specifically, the anti-slip texture 13 greatly improves the anti-slip performance of the manhole cover body 1.
[0031] Please see Figure 2The well edge 11 has a connecting slot inside, and the well edge 11 is connected to the fall protection net 14 through the connecting slot.
[0032] Specifically, the installation of the fall protection net 14 can prevent pedestrians from falling into the manhole.
[0033] Please see Figure 1-4 Both the manhole rim 11 and the manhole cover body 1 are made of cast iron.
[0034] Specifically, the cast iron well curb 11 and well cover body 1 greatly improve the structural strength of the well cover and well curb.
[0035] In use, the manhole cover body 1 is placed into the manhole edge 11. Then, by inserting a special triangular screwdriver into the triangular slot 9 of the rotating disk 8, the rotating disk 8 is rotated in the opposite direction, thereby driving the connecting shaft and the adjusting gear 4 to rotate. Under the action of the adjusting rack 5, the connecting plate 6 is driven to slide in the fixed frame 3, causing the limiting block 7 to disengage from below the manhole edge 11, thereby disengaging the manhole cover body 1 and the manhole edge 11 from each other. Then, the corresponding lifting ring is threaded into the fixed through hole 12, and the manhole cover is quickly removed from the manhole edge 11 for cable maintenance in the manhole. During use, the anti-slip texture 13 greatly improves the anti-slip performance of the manhole cover body 1, preventing pedestrians from sliding on the manhole cover body 1. Thus, the manhole cover anti-theft mechanism has the effect of improving the anti-theft performance of the manhole cover and has a highly efficient anti-slip effect.
[0036] 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. A manhole cover anti-theft mechanism, comprising a manhole cover body and a manhole opening, characterized in that: The lower surface of the manhole cover body is threadedly connected to a fixing frame. A connecting shaft is rotatably connected inside the fixing frame. An adjusting gear is provided on the outer surface of the connecting shaft. An adjusting rack is meshed on the outer surface of the adjusting gear. A connecting plate is provided on the outer surface of the adjusting rack. The connecting plate is slidably connected inside the fixing frame. A limit block is provided on one side of the connecting plate. A connecting through hole is opened inside the manhole cover body. The connecting shaft is rotatably connected inside the connecting through hole. A rotating disk is provided at the upper end of the connecting shaft. A triangular groove is opened inside the rotating disk. An orientation mark is provided on the outer surface of the rotating disk. A limit post is provided inside the fixing seat. A well edge is threadedly connected inside the well hole. The manhole cover body is placed inside the well edge.
2. The anti-theft mechanism for manhole covers according to claim 1, characterized in that: The manhole cover body has two fixing frames, which are symmetrical to each other.
3. The anti-theft mechanism for manhole covers according to claim 1, characterized in that: The upper surface of the manhole cover body is provided with a fixing through hole, and the inside of the fixing through hole is provided with an internal thread.
4. The anti-theft mechanism for manhole covers according to claim 1, characterized in that: The upper surface of the manhole cover body is provided with anti-slip textures, and there are several anti-slip textures that are evenly distributed on the upper surface of the manhole cover body.
5. The anti-theft mechanism for manhole covers according to claim 1, characterized in that: The well rim is provided with a connecting slot inside, and an anti-fall net is attached to the well rim through the connecting slot.
6. The anti-theft mechanism for manhole covers according to claim 1, characterized in that: Both the manhole rim and the manhole cover body are made of cast iron.