Reinforced road cover
By designing a reinforced support and anti-opening mechanism for road manhole covers, the problems of easy displacement and collapse and complex opening of traditional manhole covers have been solved, achieving stability and rapid maintenance of manhole covers, and reducing traffic accidents and management costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY NO 5 ENGINEERING GROUP CO LTD
- Filing Date
- 2025-09-02
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional manhole covers are prone to shifting and collapsing, lack supporting structures, and have complex opening devices, leading to traffic accidents, difficult maintenance, and high management costs.
A reinforced road manhole cover was designed, comprising a support mechanism, an anti-deviation mechanism, and a simple anti-opening mechanism. Through the combination of a support ring and a connecting plate, the stability of the manhole cover and its rapid opening are achieved.
It effectively prevents manhole covers from shifting and collapsing, improves the stability of manhole covers, reduces traffic accidents, simplifies maintenance processes, and reduces management costs.
Smart Images

Figure CN224531750U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of manhole cover technology, and more specifically, to a reinforced road manhole cover. Background Technology
[0002] Manhole covers are used to cover deep wells in roads or homes to prevent people or objects from falling in. They can be classified by material, such as metal manhole covers, high-strength fiber cement concrete manhole covers, and resin manhole covers, and are generally round. They can be used in green belts, sidewalks, motor vehicle lanes, docks, alleys, etc., but traditional manhole covers also have some drawbacks that affect daily use.
[0003] The primary problem is that traditional manhole covers can shift and collapse during use. Shifted manhole covers may protrude from the road surface or sink into a ledge, causing vehicles to slip and lose control, especially at high speeds or at night when visibility is poor, potentially leading to rear-end collisions, rollovers, and other accidents. Pedestrians may trip over the edge of a shifted manhole cover or step into a sinkhole, causing ankle sprains, falls, and other injuries. Shifting and collapse require frequent emergency repairs, which not only consume manpower and resources but may also cause traffic disruptions due to road excavation, indirectly increasing urban management costs. Shifted or collapsed manhole covers force vehicles to slow down and avoid them, especially on busy main roads, easily causing localized congestion. In the event of an accident or repair, road sections may be closed, further affecting the efficiency of the road network.
[0004] More importantly, traditional manhole covers lack a supporting structure. The supporting structure is the core of load distribution. Without support, external forces such as vehicles running over them and heavy objects piled up will directly act on the manhole cover itself, causing it to break due to excessive local stress. Without support, the force on the manhole cover will directly act on the small area of roadbed below the manhole seat, causing the roadbed soil to be compacted and hollowed out, which will then cause the manhole seat to sink. After the manhole cover collapses as a whole, a height difference will be formed between the manhole cover and the surrounding road surface, further amplifying the impact force of vehicles running over it, which may cause the manhole cover to sink completely into the ground. The support of traditional manhole covers is only the support of the manhole shell to the manhole cover. If the support structure of the manhole shell fails, the manhole cover may fall off the manhole seat, causing the manhole shell to be directly exposed and collapse. If pedestrians or vehicles fall in, it may cause injury or death.
[0005] Crucially, the opening mechanisms of traditional manhole covers are overly complex. In emergencies involving municipal pipelines or drainage systems, manhole covers need to be opened quickly for repairs. If the anti-opening mechanism is too complex, maintenance personnel will spend a lot of time unlocking it, delaying the repair opportunity. In extreme cases, if the manhole cover cannot be opened quickly, demolition may be necessary, increasing equipment and manpower costs and causing permanent damage to the manhole cover and surrounding road surface. If accidents such as people falling into the manhole or animals becoming trapped occur, the complex anti-opening mechanism will hinder rescuers from entering quickly, prolonging rescue time and increasing the risk to the lives of those trapped. Utility Model Content
[0006] (a) Technical problems to be solved
[0007] In view of the problems existing in the prior art, this utility model provides a reinforced road manhole cover to solve the technical problems mentioned in the background art.
[0008] (II) Technical Solution
[0009] To achieve the above objectives, this utility model provides the following technical solution: a reinforced road manhole cover, comprising a cover body, a manhole casing, and a base. The manhole casing is fixedly connected to the base and movably connected to the cover body. The cover body is provided with a support mechanism and a simple anti-opening mechanism. The base is provided with an anti-deviation mechanism. The anti-deviation mechanism includes a bottom plate, a middle plate, a top plate, connecting columns, and partition plates. The bottom plate is fixedly connected to the base. Two connecting columns are provided and are respectively fixedly connected to the bottom plate, the middle plate, and the top plate. Multiple partition plates are provided and are all fixedly connected to the bottom plate, the middle plate, and the top plate. The support mechanism includes a first support ring, a second support ring, a fixed seat, a support plate, and a rubber pad. The first support ring is fixedly connected to the manhole casing and movably connected to the cover body. The fixed seat is respectively fixedly connected to the cover body and the support plate. The rubber pad is fixedly connected to the support plate and movably connected to the second support ring. The second support ring is fixedly connected to the manhole casing.
[0010] The present invention is further configured such that the simple anti-opening mechanism includes a limiting groove, a connecting plate, a connecting cylinder, a rotating column and a tool hole. The connecting cylinder is fixedly connected to the cover body, the rotating column is provided with a tool hole, the rotating column is rotatably connected to the cover body and the connecting cylinder respectively, the limiting groove is fixedly connected to the well shaft, and the connecting plate is fixedly connected to the rotating column and movably connected to the limiting groove.
[0011] The present invention is further provided that the outer surface of the cover is provided with anti-slip texture, which improves the anti-slip performance of the manhole cover.
[0012] The present invention is further provided with reinforcing ribs on the outer surface of the well barrel, and the reinforcing ribs are fixedly connected to the well barrel and the base respectively, thereby improving the service life of the well cover.
[0013] The present invention is further configured such that the height of the top plate is lower than the height of the cover, thereby ensuring the functionality of the anti-deviation mechanism.
[0014] The present invention is further provided with a shock-absorbing pad between the cover and the first support ring. The shock-absorbing pad is fixedly connected to the cover and movably connected to the first support ring, thereby reducing the noise generated by the manhole cover.
[0015] The present invention is further provided that the well barrel has a notch groove, which improves the service life of the well cover.
[0016] (III) Beneficial Effects
[0017] Compared with the prior art, this utility model provides a reinforced road manhole cover, which has the following beneficial effects:
[0018] 1. A complete anti-deviation mechanism is formed by the tight fit between the base plate, middle plate, top plate, connecting column, and partition plate. After the manhole cover shifts, the edge can easily create a significant height difference with the road surface, which may cause bicycles and electric vehicles to slip and fall, and also obstruct the passage of wheelchairs and strollers. The anti-deviation mechanism can firmly restrain the manhole cover within the manhole seat, preventing misalignment or detachment. Especially in extreme weather conditions such as heavy rain and floods, it can effectively prevent pedestrians and vehicles from falling into the manhole. Manhole covers without an anti-deviation mechanism require regular inspections to check for displacement, and if displacement is found, they need to be reset and fixed, which is time-consuming and labor-intensive. Manhole covers with an anti-deviation design have strong stability, and daily maintenance only requires checking the mechanism components, without the need for frequent position adjustments.
[0019] 2. A complete support mechanism is formed by the tight fit between the first support ring, the second support ring, the fixed seat, the support plate, and the rubber pad. The pressure on the cover is distributed to the foundation to a great extent by the distribution of force by the first and second support rings, and with the assistance of the reinforcing ribs, thus avoiding excessive local stress on the manhole cover and causing deformation or breakage. Unsupported manhole covers are prone to swaying up and down when vehicles drive by quickly or when strong winds blow, which may lead to loosening of the locking device and displacement of the manhole cover in the long run. The support mechanism can enhance the fit between the manhole cover and the seat and control the swaying amplitude, which can not only avoid noise pollution, but also prevent structural fatigue fracture caused by bouncing.
[0020] 3. Through the tight fit between the limiting groove, connecting plate, connecting cylinder, rotating column, and tool hole, a complete and simple anti-opening mechanism is formed. In the event of emergencies such as gas leaks, water supply failures, or heavy rain drainage, simply insert a tool into the tool groove and rotate it to move the connecting plate out of the limiting groove to release the limiting and open the cover. This allows maintenance personnel to quickly unlock the cover, reducing the time difference between arriving at the site and starting work. The simple device requires no professional training to operate, and maintenance personnel can quickly learn it without additional training costs. Whether it is municipal workers, community property management personnel, or temporary repair personnel, they can quickly master the opening method, improving the efficiency of daily inspections and maintenance. The simple device uses standardized tools, eliminating the need to stock special tools for different manhole covers, reducing the problem of tool loss and mismatch. It is especially suitable for municipal departments to manage a large number of manhole covers in a unified manner, improving management efficiency. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of a reinforced road manhole cover according to the present invention. Figure 1 ;
[0022] Figure 2This is a schematic diagram of the overall structure of a reinforced road manhole cover according to the present invention. Figure 2 ;
[0023] Figure 3 A cross-sectional view of the overall structure of a reinforced road manhole cover according to this utility model. Figure 1 ;
[0024] Figure 4 This is a cross-sectional view of the overall structure of a reinforced road manhole cover according to the present invention;
[0025] Figure 5 This is a schematic diagram of the anti-deviation mechanism in this utility model.
[0026] In the diagram: 1. Cover; 2. Well shaft; 3. Base; 4. Bottom plate; 5. Intermediate plate; 6. Top plate; 7. Connecting column; 8. Divider plate; 9. First support ring; 10. Second support ring; 11. Fixing seat; 12. Support plate; 13. Rubber pad; 14. Limiting groove; 15. Connecting plate; 16. Connecting cylinder; 17. Rotating column; 18. Tool hole; 19. Anti-slip texture; 20. Reinforcing rib; 21. Shock-absorbing pad; 22. Notch groove. Detailed Implementation
[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.
[0029] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.
[0030] Please see Figures 1-5A reinforced road manhole cover includes a cover body 1, a manhole casing 2, and a base 3. The manhole casing 2 is fixedly connected to the base 3 and movably connected to the cover body 1. The cover body 1 is provided with a support mechanism and a simple anti-opening mechanism. The base 3 is provided with an anti-deviation mechanism. The anti-deviation mechanism includes a bottom plate 4, a middle plate 5, a top plate 6, connecting columns 7, and partition plates 8. The bottom plate 4 is fixedly connected to the base 3. There are two connecting columns 7, which are respectively fixedly connected to the bottom plate 4, the middle plate 5, and the top plate 6. There are multiple partition plates 8, which are all fixedly connected to the bottom plate 4, the middle plate 5, and the top plate 6. The support mechanism includes a first support ring 9, a second support ring 10, a fixed seat 11, a support plate 12, and a rubber pad 13. The first support ring 9 is fixedly connected to the manhole casing 2 and movably connected to the cover body 1. The fixed seat 11 is fixedly connected to the cover body 1 and the support plate 12 respectively. The rubber pad 13 is fixedly connected to the support plate 12 and movably connected to the second support ring 10. The second support ring 10 is fixedly connected to the manhole casing 2.
[0031] In a further embodiment of this application, the simplified anti-opening mechanism includes a limiting groove 14, a connecting plate 15, a connecting cylinder 16, a rotating column 17, and a tool hole 18. The connecting cylinder 16 is fixedly connected to the cover 1, the rotating column 17 is provided with the tool hole 18, the rotating column 17 is rotatably connected to the cover 1 and the connecting cylinder 16 respectively, the limiting groove 14 is fixedly connected to the well shaft 2, and the connecting plate 15 is fixedly connected to the rotating column 17 and movably connected to the limiting groove 14.
[0032] In a further embodiment of this application, the outer surface of the cover 1 is provided with anti-slip texture 19 to improve the anti-slip properties of the cover 1.
[0033] In a further embodiment of this application, the outer surface of the well shaft 2 is provided with reinforcing ribs 20, which are fixedly connected to the well shaft 2 and the base 3 respectively. When the well shaft 2 is under pressure, the pressure is transmitted to the base 3 and the ground through the reinforcing ribs 20, thereby extending the service life of the well shaft 2.
[0034] In a further embodiment of this application, the height of the top plate 6 is lower than the height of the cover 1, so that the anti-deviation mechanism can be completely buried during the burial process, preventing the manhole cover from shifting arbitrarily.
[0035] In a further embodiment of this application, a shock-absorbing pad 21 is provided between the cover 1 and the first support ring 9. The shock-absorbing pad 21 is fixedly connected to the cover 1 and movably connected to the first support ring 9. When the cover 1 is pressed down, it moves closer to the first support ring 9. The shock-absorbing pad 21 between the cover 1 and the second support ring 10 can effectively reduce the noise emitted by the cover 1 when it is pressed.
[0036] In a further embodiment of this application, the well casing 2 is provided with a notch 22. When the well casing 2 is under pressure, the notch 22 evenly transmits a portion of the pressure to the ground, thereby extending the service life of the well cover.
[0037] In this embodiment, when the device is needed, during installation, the base 3 is placed on the foundation, and concrete or asphalt is used to fill it, so that the upper surface of the cover 1 is level with the ground. The filled concrete or asphalt will cover the base plate 4, connecting column 7 and top plate 6, and fill the gap between the partition plate 8 and the middle plate 5, so that the concrete or asphalt will fix the above components when it solidifies, so that the manhole cover will not shift arbitrarily. When the manhole cover is in use, the cover 1 transmits the force to the manhole cylinder 2 and the first support ring 9 when it is under pressure. At the same time, the cover 1 transmits the pressure to the second support ring 10 through the fixing seat 11, support plate 12 and rubber pad 13. The pressure on the cover 1 is distributed to the manhole cylinder 2 through the first support ring 9 and the second support ring 10. The manhole cylinder 2 then transmits the pressure to the base 3 and the ground through the reinforcing rib 20 and notch 22, so as to extend the service life of the manhole cover.
[0038] More specifically, when it is necessary to open the cover 1, insert a common tool and rotate the tool hole 18 to make the rotating column 17 rotate inside the connecting cylinder 16 and drive the connecting plate 15 to rotate and move out of the limiting groove 14, so that the cover 1 can be opened. The anti-slip texture 19 prevents vehicles and pedestrians passing by the cover 1 from slipping easily. The cover 1 is pressed down and moves closer to the first support ring 9. The shock-absorbing pad 21 between the cover 1 and the second support ring 10 can effectively reduce the noise emitted by the cover 1 when it is under pressure.
[0039] In summary, during the use or operation of the overall equipment: During installation, the base 3 is placed on the foundation, and concrete or asphalt is used to fill the gap, making the upper surface of the cover 1 level with the ground. The filled concrete or asphalt will cover the base plate 4, connecting column 7, and top plate 6, and fill the gap between the partition plate 8 and the middle plate 5. This ensures that the concrete or asphalt fixes the above components when it solidifies, preventing the manhole cover from shifting arbitrarily. When the manhole cover is in use, the cover 1 transmits the force to the manhole cylinder 2 and the first support ring 9 when it is under pressure. At the same time, the cover 1 transmits the pressure to the second support ring 10 through the fixing seat 11, support plate 12, and rubber pad 13. The pressure on the cover 1 is then distributed to the manhole cylinder 2 through the first support ring 9 and the second support ring 10. The manhole cylinder 2 then transmits the pressure to the base 3 and the ground through the reinforcing rib 20 and notch 22, thus extending the service life of the manhole cover.
[0040] When it is necessary to open the cover 1, insert a common tool and rotate the tool hole 18 to make the rotating column 17 rotate in the connecting cylinder 16 and drive the connecting plate 15 to rotate and move out of the limiting groove 14, so that the cover 1 can be opened. The anti-slip texture 19 prevents vehicles and pedestrians passing by the cover 1 from slipping easily. The shock-absorbing pad 21 between the cover 1 and the second support ring 10 can effectively reduce the noise emitted by the cover 1 when it is under pressure.
[0041] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.
Claims
1. A reinforced road manhole cover, comprising a cover body (1), a manhole casing (2), and a base (3), characterized in that: The well casing (2) is fixedly connected to the base (3) and movably connected to the cover (1). The cover (1) is provided with a support mechanism and a simple anti-opening mechanism. The base (3) is provided with an anti-deviation mechanism. The anti-deviation mechanism includes a bottom plate (4), a middle plate (5), a top plate (6), a connecting column (7), and a partition plate (8). The bottom plate (4) is fixedly connected to the base (3). There are two connecting columns (7), which are fixedly connected to the bottom plate (4), the middle plate (5), and the top plate (6) respectively. There are multiple partition plates (8), which are all fixedly connected to the bottom plate (4), the middle plate (5), and the top plate (6). The inter-plate (5) and the top plate (6) are fixedly connected. The support mechanism includes a first support ring (9), a second support ring (10), a fixed seat (11), a support plate (12), and a rubber pad (13). The first support ring (9) is fixedly connected to the well shaft (2) and movably connected to the cover (1). The fixed seat (11) is fixedly connected to the cover (1) and the support plate (12) respectively. The rubber pad (13) is fixedly connected to the support plate (12) and movably connected to the second support ring (10). The second support ring (10) is fixedly connected to the well shaft (2).
2. A reinforced road manhole cover according to claim 1, characterized in that: The simple anti-opening mechanism includes a limiting groove (14), a connecting plate (15), a connecting cylinder (16), a rotating column (17), and a tool hole (18). The connecting cylinder (16) is fixedly connected to the cover (1). The rotating column (17) is provided with a tool hole (18). The rotating column (17) is rotatably connected to the cover (1) and the connecting cylinder (16) respectively. The limiting groove (14) is fixedly connected to the well shaft (2). The connecting plate (15) is fixedly connected to the rotating column (17) and movably connected to the limiting groove (14).
3. A reinforced road manhole cover according to claim 1, characterized in that: The outer surface of the cover (1) is provided with anti-slip texture (19).
4. A reinforced road manhole cover according to claim 3, characterized in that: The outer surface of the well shaft (2) is provided with reinforcing ribs (20), and the reinforcing ribs (20) are fixedly connected to the well shaft (2) and the base (3) respectively.
5. A reinforced road manhole cover according to claim 4, characterized in that: The height of the top plate (6) is lower than the height of the cover (1).
6. A reinforced road manhole cover according to claim 5, characterized in that: A shock-absorbing pad (21) is provided between the cover (1) and the first support ring (9). The shock-absorbing pad (21) is fixedly connected to the cover (1) and movably connected to the first support ring (9).
7. A reinforced road manhole cover according to claim 6, characterized in that: The wellbore (2) is provided with a notch (22).