Anti-falling safety well lid

Abstract

The utility model discloses an anti-falling safety well lid which is arranged at a well mouth and comprises a base, a lid body and an elastic supporting assembly. A bearing ring, a first limiting step and a second limiting step are arranged on the inner wall of the base, and a first water outlet is formed in the inner side of the bearing ring; the cover body is arranged on the bearing ring and is provided with a sealing position and a drainage position which can be switched mutually, and a plurality of second drainage ports communicated with the first drainage ports are formed in the side wall of the cover body; the elastic supporting assembly is arranged between the cover body and the base; through the structure, the cover body can be switched to the drainage position when water is accumulated, so that the accumulated water can flow into the hoistway through the second drainage port and the first drainage port, the drainage efficiency is improved, meanwhile, the cover body does not need to be removed, and the safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of manhole covers, and in particular to a safety manhole cover that prevents falling off. Background Technology

[0002] Urban construction involves the design of numerous pipelines, including drainage pipes and cable conduits, along with corresponding drainage outlets and inspection ports, necessitating the installation of manhole covers for concealment. These covers are often removed from manholes for maintenance, emergency drainage, or theft. If the city's drainage network is poorly designed or during heavy rains, drainage difficulties can lead to water accumulation. Current solutions typically involve removing the manhole cover entirely, exposing the manhole completely. This creates a safety hazard, prompting the installation of fall-prevention nets. However, this still cannot prevent pedestrians or vehicles from falling into the manhole. Therefore, a fall-prevention safety manhole cover is urgently needed to address these issues. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a safety manhole cover that prevents it from falling off.

[0004] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: a safety manhole cover that prevents falling off, installed at the manhole opening, including a base, a cover body and an elastic support component;

[0005] The inner wall of the base is provided with a support ring and a first limiting step and a second limiting step, and the inner side of the support ring is provided with a first drain outlet.

[0006] The cover is set on the support ring and has a switchable closed position and a drainage position. Several second drainage ports connected to the first drainage port are provided on the side wall of the cover.

[0007] The elastic support assembly is positioned between the cover and the base to provide an upward thrust to the cover;

[0008] The cover can rotate relative to the base in a first direction to switch the cover to a closed position, wherein the second drain outlet is lower than the upper surface of the base when the cover is in the closed position; or the cover can rotate relative to the base in a second direction to switch the cover to a drain position, wherein the second drain outlet is at least partially higher than the upper surface of the base when the cover is in the drain position.

[0009] As one of the preferred embodiments of this utility model, an L-shaped limiting groove is provided on the inner wall of the base. The L-shaped limiting groove includes a horizontal section and a vertical section communicating with the horizontal section. The inner top wall of the horizontal section forms a first limiting step. The upper end of the vertical section communicates with the upper end face of the base. A limiting block extending into the L-shaped limiting groove is provided on the side wall of the cover. The cover also includes a cover plate connected to the base and closing the vertical section. The lower end face of the cover plate forms a second limiting step.

[0010] As one of the preferred embodiments of this utility model, the cover plate is connected to the base through a detachable structure.

[0011] As one of the preferred embodiments of this utility model, the detachable structure is configured as a bolt connection structure.

[0012] As one of the preferred embodiments of this utility model, the elastic support component includes a plurality of springs evenly distributed between the cover and the base.

[0013] As one of the preferred embodiments of this utility model, a sleeve fitted onto the spring is provided on the cover.

[0014] As one of the preferred embodiments of this utility model, a central plate is provided on the inner side of the supporting ring, and a number of support plates are provided at intervals on the periphery of the central plate, which are respectively connected to the central plate and the supporting ring. One end of the spring abuts against the cover and the other end abuts against the central plate and / or the support plate.

[0015] As one of the preferred embodiments of this utility model, the upper end surface of the cover is provided with a plurality of third drain outlets that are connected to the first drain outlet.

[0016] The beneficial effects of this utility model are as follows: A safety manhole cover designed to prevent falling is installed at the manhole opening, comprising a base, a cover body, and an elastic support assembly. The inner wall of the base is provided with a support ring and a first limiting step and a second limiting step. A first drainage outlet is formed on the inner side of the support ring. The cover body is mounted on the support ring and has a switchable closed position and a drainage position. Several second drainage outlets communicating with the first drainage outlet are provided on the side wall of the cover body. The elastic support assembly is disposed between the cover body and the base to provide an upward thrust to the cover body. The cover body can rotate relative to the base in a first direction to switch to the closed position, where the second drainage outlet is lower than the upper surface of the base when the cover body is in the closed position; or the cover body can rotate relative to the base in a second direction to switch to the drainage position, where the second drainage outlet is at least partially higher than the upper surface of the base when the cover body is in the drainage position. This structure allows the cover body to be switched to the drainage position when water accumulates, enabling the water to flow into the manhole through the second and first drainage outlets, improving drainage efficiency. Furthermore, it eliminates the need to remove the cover body, thus enhancing safety. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of the structure of a safety manhole cover designed to prevent falling off, in its first state.

[0019] Figure 2 This is a structural schematic diagram of a safety manhole cover designed to prevent falling off, in its second state.

[0020] Figure 3 An exploded view of a type of safety manhole cover designed to prevent it from falling off.

[0021] Figure 4 This is a schematic diagram of the cover structure. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0024] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0026] Reference Figures 1 to 4A safety manhole cover designed to prevent falling off, installed at the manhole opening, includes a base 10, a cover body 20, and an elastic support assembly 30.

[0027] The inner wall of the base 10 is provided with a support ring 11 and a first limiting step and a second limiting step, and the inner side of the support ring 11 forms a first drain outlet 12.

[0028] The cover 20 is mounted on the support ring 11 and has a switchable closed position and a drain position. The side wall of the cover 20 is provided with a number of second drain ports 21 that communicate with the first drain port 12.

[0029] The elastic support assembly 30 is disposed between the cover 20 and the base 10 to provide an upward thrust to the cover 20;

[0030] The cover 20 can rotate relative to the base 10 in a first direction to switch the cover 20 to a closed position, wherein the second drain outlet 21 can be lower than the upper surface of the base 10 when the cover 20 is in the closed position; or the cover 20 can rotate relative to the base 10 in a second direction to switch the cover 20 to a drain position, wherein the second drain outlet 21 can be at least partially higher than the upper surface of the base 10 when the cover 20 is in the drain position.

[0031] In this invention, when there is no water accumulation, the cover 20 can be operably rotated relative to the base 10 in a first direction, switching the cover 20 to a closed position. At this time, the second drain outlet 21 on the cover 20 is lower than the upper surface of the base 10, meaning the second drain outlet 21 is not connected to the outside. When heavy rain causes water accumulation on the road, the cover 20 can be operably rotated relative to the base 10 in a second direction, switching the cover 20 to a drainage position. At this time, the second drain outlet 21 on the cover 20 is at least partially higher than the upper surface of the base 10, meaning the second drain outlet 21 is connected to the outside. This allows the accumulated water from the outside to flow into the manhole through the second drain outlet 21 and the first drain outlet 12, greatly increasing the area of ​​connection between the outside and the manhole, thereby improving drainage efficiency. At the same time, since the cover 20 is not removed from the manhole, the problem of falling is fundamentally solved.

[0032] Reference Figures 2-4In some embodiments, an L-shaped limiting groove 40 is provided on the inner wall of the base 10. The L-shaped limiting groove 40 includes a horizontal section 41 and a vertical section 42 communicating with the horizontal section 41. The inner top wall of the horizontal section 41 forms a first limiting step. The upper end of the vertical section 42 communicates with the upper end face of the base 10. A limiting block 22 extending into the L-shaped limiting groove 40 is provided on the side wall of the cover 20. It also includes a cover plate 50 connected to the base 10 and closing the vertical section 42. The lower end face of the cover plate 50 forms a second limiting step. Specifically, the cover 20... Taking the switching from the closed position to the drainage position as an example, when the cover 20 is in the closed position, the limiting block 22 on the cover 20 is located inside the horizontal section 41 and abuts against the inner top wall of the horizontal section 41, thereby maintaining the closed position; when the cover 20 rotates relative to the base 10 in the second direction, the limiting block 22 will move from the horizontal section 41 to the vertical section 42, and under the action of the thrust provided by the elastic support component 30, it will move upward along the vertical section 42 until it reaches the end of the vertical section 42 (cover plate 50), at which point the cover 20 switches to the drainage position.

[0033] Reference Figures 1-3 In some embodiments, the cover plate 50 is connected to the base 10 via a detachable structure 60. Preferably, the detachable structure 60 is a bolted connection structure.

[0034] Reference Figure 3 In some embodiments, the elastic support assembly 30 includes a plurality of springs 31 evenly distributed between the cover 20 and the base 10; in a further embodiment, the cover 20 is provided with a sleeve 70 sleeved on the springs 31, and the sleeve 70 serves to limit the movement of the springs 31.

[0035] Reference Figure 3 In some embodiments, a central plate 81 is provided on the inner side of the supporting ring 11, and a plurality of support plates 82 are provided at intervals around the central plate 81, which are respectively connected to the central plate 81 and the supporting ring 11. One end of the spring 31 abuts against the cover 20, and the other end abuts against the central plate 81 and / or the support plate 82. It should be noted that the width of the part of the support plate 82 that is released from the spring 31 is at least twice the width of the limiting block 21, so as to ensure that the spring 31 will not detach from the support plate 82 during the rotation of the cover 20.

[0036] Reference Figures 1-4 In some embodiments, the upper surface of the cover 20 is provided with a plurality of third drain outlets 23 that communicate with the first drain outlet 12. The third drain outlets 23 can meet the daily drainage function under normal conditions.

[0037] The advantages of this utility model are: the above structure allows the cover to be switched to the drainage position when water accumulates, so that the water can flow into the well through the second drainage outlet and the first drainage outlet, improving drainage efficiency. At the same time, it does not require the cover to be removed, thus improving safety.

[0038] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A fall-prevention safety well lid installed at a well opening, characterized by: Includes a base (10), a cover (20), and a flexible support assembly (30); The inner wall of the base (10) is provided with a support ring (11) and a first limiting step and a second limiting step, and the inner side of the support ring (11) forms a first drain outlet (12). The cover (20) is disposed on the support ring (11) and has a switchable closed position and a drainage position. The side wall of the cover (20) is provided with a plurality of second drainage ports (21) that communicate with the first drainage port (12). The elastic support assembly (30) is disposed between the cover (20) and the base (10) to provide an upward thrust to the cover (20); The cover (20) can rotate relative to the base (10) in a first direction to switch the cover (20) to a closed position, wherein the second drain outlet (21) is lower than the upper surface of the base (10) when the cover (20) is in the closed position; or the cover (20) can rotate relative to the base (10) in a second direction to switch the cover (20) to a drain position, wherein the second drain outlet (21) is at least partially higher than the upper surface of the base (10) when the cover (20) is in the drain position.

2. The anti-falling safety manhole cover according to claim 1, characterized in that: The base (10) has an L-shaped limiting groove (40) on its inner wall. The L-shaped limiting groove (40) includes a horizontal section (41) and a vertical section (42) that communicates with the horizontal section (41). The inner top wall of the horizontal section (41) forms the first limiting step. The upper end of the vertical section (42) communicates with the upper end face of the base (10). The cover (20) has a limiting block (22) that extends into the L-shaped limiting groove (40) on its side wall. It also includes a cover plate (50) that is connected to the base (10) and closes the vertical section (42). The lower end face of the cover plate (50) forms the second limiting step.

3. A fall-prevention safety well lid according to claim 2, characterized in that: The cover plate (50) is connected to the base (10) via a detachable structure (60).

4. A fall-prevention safety well lid according to claim 3, characterized in that: The detachable structure (60) is configured as a bolted connection structure.

5. A fall-prevention safety well lid according to claim 1, characterized in that: The elastic support assembly (30) includes a plurality of springs (31) evenly distributed between the cover (20) and the base (10).

6. A fall-prevention safety well lid according to claim 5, characterized in that: A sleeve (70) is provided on the cover (20) and fitted onto the spring (31).

7. A fall-prevention safety well lid according to claim 5, characterized in that: A central plate (81) is provided on the inner side of the supporting ring (11). A plurality of support plates (82) are provided at intervals around the central plate (81) and the supporting ring (11), respectively. One end of the spring (31) abuts against the cover (20) and the other end abuts against the central plate (81) and / or the support plate (82).

8. A fall-prevention safety well lid according to claim 1, characterized in that: The upper surface of the cover (20) is provided with a plurality of third drain outlets (23) that are connected to the first drain outlet (12).

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