Well lid

Abstract

The utility model discloses a well lid which comprises a well lid base and a lid body, the well lid base is of a cylindrical structure, and the lid body is used for covering an upper opening of the well lid base. A plurality of clamping seats are arranged on the inner wall of the well lid seat; the lower surface of the cover body is provided with a plurality of arc-shaped elastic arms, the number of the arc-shaped elastic arms is the same as that of the clamping seats, the fixed ends of the arc-shaped elastic arms are fixedly connected with the cover body, and the free end of each arc-shaped elastic arm is provided with a clamping block; under the action of outward elastic force of the arc-shaped elastic arm, the clamping block is clamped to the lower part of the clamping seat; compared with the prior art, by arranging the clamping blocks on the arc-shaped elastic arms and the clamping bases on the well lid base, the lid body and the well lid base cannot be separated easily, and the anti-theft performance is improved.

Description

Technical Field

[0001] The utility model relates to the field of municipal facilities, in particular to a manhole cover. Background Art

[0002] With the rapid development of cities, in the process of urban construction, underground sewers, underground gas pipelines, water pipelines, power pipelines, communication pipelines and national defense pipelines are laid to provide people with the necessary materials for life. The above pipelines need to be equipped with an outlet to the ground at a certain distance, and the section from the pipeline to the ground is called a manhole. The manhole opening is usually flush with the ground, so a cover is needed to close the manhole opening to prevent people or objects from falling. The cover is called a manhole cover.

[0003] Manhole covers usually include a manhole cover seat and a cover body fixed on the manhole cover seat. Manhole covers are prone to being stolen, displaced by flooding, or bounced after being pressed by vehicles, causing safety hazards and property losses. How to firmly connect the cover body to the manhole cover seat to prevent theft is a key research direction for manhole cover manufacturers.

[0004] In view of this, the inventor conducted in-depth research on the above-mentioned defects in the prior art, and thus came up with this case. Utility Model Content

[0005] The main purpose of the utility model is to provide a manhole cover, which has the characteristic of increasing the anti-theft performance of the manhole cover.

[0006] In order to achieve the above purpose, the solution of the utility model is:

[0007] A manhole cover, comprising a manhole cover seat and a cover body, wherein the manhole cover seat is a cylindrical structure, and the cover body is used to cover the upper opening of the manhole cover seat; a plurality of clamping seats are arranged on the inner wall of the manhole cover seat; a plurality of arc-shaped elastic arms, the same number as the clamping seats, are arranged on the lower surface of the cover body, the fixed ends of the arc-shaped elastic arms are fixedly connected to the cover body, and a clamping block is arranged at the free end of each of the arc-shaped elastic arms; under the outward elastic force of the arc-shaped elastic arms, the clamping block is clamped to the bottom of the clamping seat.

[0008] Furthermore, the holder is provided with a first upper inclined surface and a first lower inclined surface on the upper and lower parts respectively; the block is provided with a second upper inclined surface and a second lower inclined surface on the upper and lower parts respectively.

[0009] Furthermore, the first upper inclined surface is connected to the first lower inclined surface; and the second upper inclined surface is connected to the second lower inclined surface.

[0010] Furthermore, a rib is formed on the lower surface of the cover body, and the fixed end of the arc-shaped elastic arm is integrally connected to the rib.

[0011] Furthermore, the ribs include an annular rib located in the middle of the cover body and radial ribs extending outward from the annular rib; and the fixed end of the arc-shaped elastic arm is connected to the radial rib.

[0012] Furthermore, the arc-shaped elastic arms are arranged along the horizontal direction.

[0013] Furthermore, the cover body is provided with three arc-shaped elastic arms, and each arc-shaped elastic arm is provided with a clamping block; and a clamping seat corresponding to the clamping blocks is provided in the manhole cover seat.

[0014] Furthermore, the manhole cover seat includes an inner cylinder, a placement step is formed on the upper part of the inner cylinder; the edge of the cover body is placed on the placement step; the clamping seat is formed on the upper inner wall of the inner cylinder close to the placement step; and the arc-shaped elastic arm extends into the cylinder.

[0015] Furthermore, a hinge groove is formed on the manhole cover seat, and a hinge seat is formed on the edge of the cover body, and the hinge seat is rotatably connected in the hinge groove; a lock groove is provided on the edge of the manhole cover seat on the opposite side of the hinge groove, and a lock body for locking the cover body is provided in the lock groove.

[0016] Furthermore, the cover body is provided with a plurality of swirl drainage grooves distributed around the center.

[0017] After adopting the above structure, the utility model relates to a manhole cover, which has at least the following

[0018] Beneficial effects:

[0019] 1. When the cover is placed from top to bottom, the block contacts the holder, and the arc-shaped elastic arm deforms inward so that the block can be stuck under the holder. The block on the arc-shaped elastic arm is engaged with the holder, thus limiting the upward movement of the cover relative to the manhole cover seat, so that a greater force is required to remove the cover from the manhole cover seat, thereby increasing the anti-theft performance, and also preventing the cover from floating due to excessive water accumulation and preventing the cover from bouncing when a vehicle presses on the manhole cover.

[0020] Second, by matching the first upper bevel on the card base with the second lower bevel on the card block, when the cover moves downward, the card base drives the card block on the arc-shaped elastic arm to move inward, that is, the arc-shaped elastic arm is deformed and the card block moves downward through the card block, and then the first lower bevel on the card base abuts against the first upper bevel on the card block, so that the cover is stable. When the cover needs to be removed, the first lower bevel on the card base and the first upper bevel on the card block cooperate with each other, and the elastic force of the arc-shaped elastic arm needs to be overcome to remove it.

[0021] 3. One end of the arc-shaped elastic arm is arranged on the rib, and the structure is compact. The arc-shaped elastic arm has sufficient placement space and deformation range. The arc-shaped elastic arm adopts an arc-shaped setting, which increases the length, so that the force of the clamping block and the clamping seat is appropriate.

[0022] Fourth, by providing a hinge slot, a hinge seat and a lock slot, the anti-theft performance is further increased. The lock body needs to be opened and then pried upward to separate the card block from the card seat.

[0023] Compared with the prior art, the utility model provides a clamping block on the arc-shaped elastic arm and a clamping seat on the manhole cover seat, so that the cover body and the manhole cover seat cannot be easily separated, thereby improving the anti-theft performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The utility model is a three-dimensional structural schematic diagram of a manhole cover.

[0025] Figures 2 to 4 It is a schematic diagram of the three-dimensional exploded structure of the cover body and the manhole cover base at different angles.

[0026] Figure 5 It is a schematic diagram of the three-dimensional cross-sectional structure of the manhole cover.

[0027] Figure 6 for Figure 5 Schematic diagram of the enlarged structure at point A in the middle.

[0028] In the figure:

[0029] Manhole cover seat 1; clamping seat 11; first upper inclined surface 111; first lower inclined surface 112; inner tube 12; placement step 13; hinge groove 14; lock groove 15; cover body 2; arc elastic arm 21; clamping block 22; second upper inclined surface 221; second lower inclined surface 222; rib 23; annular rib 231; radial rib 232; hinge seat 24; swirl drainage groove 25. DETAILED DESCRIPTION

[0030] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0031] like Figures 1 to 6 As shown, it is a manhole cover involved in the utility model, including a manhole cover seat 1 and a cover body 2, the manhole cover seat 1 is a cylindrical structure, and the cover body 2 is used to cover the upper opening of the manhole cover seat 1; the inner wall of the manhole cover seat 1 is provided with a plurality of clamping seats 11; the lower surface of the cover body 2 is provided with a plurality of arc-shaped elastic arms 21 with the same number as the clamping seats 11, the fixed ends of the arc-shaped elastic arms 21 are fixedly connected to the cover body 2, and the free ends of each of the arc-shaped elastic arms 21 are provided with a clamping block 22; under the outward elastic force of the arc-shaped elastic arms 21, the clamping block 22 is clamped to the bottom of the clamping seat 11.

[0032] In this way, in the manhole cover of the utility model, when the cover body 2 is placed from top to bottom, the clamping block 22 contacts the clamping seat 11, and the arc-shaped elastic arm 21 deforms inwardly so that the clamping block 22 can be clamped under the clamping seat 11. The clamping block 22 on the arc-shaped elastic arm 21 is clamped with the clamping seat 11, thereby limiting the upward movement of the cover body 2 relative to the manhole cover seat 1, so that a greater force is required to remove the cover body 2 from the manhole cover seat 1, thereby improving the anti-theft performance, and also preventing the cover body 2 from floating due to excessive water accumulation and preventing the cover body 2 from bouncing when a vehicle presses on the manhole cover.

[0033] Preferably, if Figure 6 As shown, the card holder 11 is provided with a first upper inclined surface 111 and a first lower inclined surface 112 respectively; the card block 22 is provided with a second upper inclined surface 221 and a second lower inclined surface 222 respectively. Furthermore, the first upper inclined surface 111 and the first lower inclined surface 112 are connected; the second upper inclined surface 221 and the second lower inclined surface 222 are connected.

[0034] By matching the first upper inclined surface 111 on the card base 11 and the second lower inclined surface 222 on the card block 22, when the cover body 2 moves downward, the card base 11 drives the card block 22 on the arc-shaped elastic arm 21 to move inward, that is, the arc-shaped elastic arm 21 is deformed and the card block 22 moves downward through the card block 22, and then the first lower inclined surface 112 on the card base 11 abuts against the first upper inclined surface 111 on the card block 22, so that the cover body 2 is stable. When the cover body 2 needs to be removed, the first lower inclined surface 112 on the card base 11 and the first upper inclined surface 111 on the card block 22 cooperate with each other, and the elastic force of the arc-shaped elastic arm 21 needs to be overcome before it can be removed.

[0035] Preferably, a rib 23 is formed on the lower surface of the cover body 2, and the fixed end of the arc-shaped elastic arm 21 is integrally connected to the rib 23. One end of the arc-shaped elastic arm 21 is arranged on the rib 23, and the structure is compact, and the arc-shaped elastic arm 21 has sufficient placement space and deformation amplitude. The arc-shaped elastic arm 21 is arranged in an arc shape, which increases the length, so that the force of the clamping block 22 and the clamping seat 11 is appropriate. Specifically, the rib 23 includes an annular rib 231 located in the middle of the cover body 2 and a radial rib 232 extending outward from the annular rib 231; the fixed end of the arc-shaped elastic arm 21 is connected to the radial rib 232. Preferably, the arc-shaped elastic arm 21 is arranged along the horizontal direction.

[0036] Specifically, the cover body 2 is provided with three arc-shaped elastic arms 21, each of which is provided with a clamping block 22; the manhole cover seat 1 is provided with a clamping seat 11 corresponding to the clamping blocks 22. The three clamping blocks 22 and the three clamping seats 11 are distributed along the circumference, and the connection is more stable.

[0037] Preferably, the manhole cover seat 1 includes an inner cylinder 12, and a placement step 13 is formed on the upper part of the inner cylinder 12; the edge of the cover body 2 is placed on the placement step 13; the clamping seat 11 is formed on the inner wall of the upper part of the inner cylinder 12 close to the placement step 13; the arc-shaped elastic arm 21 extends into the cylinder. A hinge groove 14 is also formed on the manhole cover seat 1, and a hinge seat 24 is formed on the edge of the cover body 2, and the hinge seat 24 is rotatably connected in the hinge groove 14; a lock groove 15 is provided on the edge of the manhole cover seat 1 on the opposite side of the hinge groove 14, and a lock body (not shown in the figure) for locking the cover body 2 is provided in the lock groove 15. By providing the hinge groove 14, the hinge seat 24 and the lock groove 15, the anti-theft performance is further increased, and the lock block 22 needs to be disengaged from the clamping seat 11 after opening the lock body and then prying upward.

[0038] Preferably, the cover body 2 has a plurality of swirl drainage grooves 25 distributed around the center to speed up drainage.

[0039] Compared with the prior art, the present invention provides a clamping block 22 on the arc-shaped elastic arm 21 and a clamping seat 11 on the manhole cover seat 1, so that the cover body 2 and the manhole cover seat 1 cannot be easily separated, thereby improving the anti-theft performance.

[0040] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. A manhole cover, characterized in that: It includes a manhole cover seat and a cover body, the manhole cover seat is a cylindrical structure, the cover body is used to cover the upper opening of the manhole cover seat; a plurality of clamping seats are arranged on the inner wall of the manhole cover seat; a plurality of arc-shaped elastic arms with the same number as the clamping seats are arranged on the lower surface of the cover body, the fixed ends of the arc-shaped elastic arms are fixedly connected to the cover body, and a clamping block is arranged at the free end of each of the arc-shaped elastic arms; under the outward elastic force of the arc-shaped elastic arms, the clamping block is clamped to the bottom of the clamping seat.

2. A manhole cover according to claim 1, characterized in that: The first upper inclined surface and the first lower inclined surface are respectively arranged on the upper and lower parts of the card seat; the second upper inclined surface and the second lower inclined surface are respectively arranged on the upper and lower parts of the card block.

3. A manhole cover as claimed in claim 2, characterized in that: The first upper inclined surface is connected to the first lower inclined surface; the second upper inclined surface is connected to the second lower inclined surface.

4. A manhole cover according to claim 1, characterized in that: The lower surface of the cover body is formed with ribs, and the fixed ends of the arc-shaped elastic arms are integrally connected to the ribs.

5. A manhole cover as claimed in claim 4, characterized in that: The ribs include an annular rib located in the middle of the cover body and radial ribs extending outward from the annular rib; the fixed end of the arc-shaped elastic arm is connected to the radial rib.

6. A manhole cover according to claim 1, characterized in that: The arc-shaped elastic arms are arranged along the horizontal direction.

7. A manhole cover as claimed in claim 1, characterized in that: The cover body is provided with three arc-shaped elastic arms, each of which is provided with a clamping block; a clamping seat corresponding to the clamping blocks is provided in the manhole cover seat.

8. A manhole cover as claimed in claim 1, characterized in that: The manhole cover seat includes an inner cylinder, and a placement step is formed on the upper part of the inner cylinder; the edge of the cover body is placed on the placement step; the clamping seat is formed on the inner wall of the upper part of the inner cylinder close to the placement step; and the arc-shaped elastic arm extends into the cylinder.

9. A manhole cover as claimed in claim 1, characterized in that: A hinge groove is also formed on the manhole cover seat, and a hinge seat is formed on the edge of the cover body, and the hinge seat is rotatably connected in the hinge groove; a lock groove is provided on the edge of the manhole cover seat on the opposite side of the hinge groove, and a lock body for locking the cover body is provided in the lock groove.

10. A manhole cover according to claim 1, characterized in that: The cover body is provided with a plurality of swirl drainage grooves distributed around the center.

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