Hinge type well lid
By designing a combination of pivot, handle, limit plate, and pull rod for the hinged manhole cover, the force on the manhole cover is evenly distributed, solving the problem of easy damage to the hinges of existing hinged manhole covers and improving the durability and safety of the manhole cover.
Patent Information
- Application Number
- CN202520302457.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-25
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-25
AI Technical Summary
Existing hinged anti-theft manhole covers are limited by hinges on their sides when opened and closed. However, the hinges are subjected to significant torsional forces during use, which can easily cause damage.
A hinged manhole cover was designed, including a manhole ring, a cover plate assembly, an installation assembly, and a fixing assembly. Through the combination of a pivot, a handle, a limiting plate, and a tie rod, the force on the manhole cover is evenly distributed to avoid excessive torsional force on the hinge. Washers and limiting plates are used to provide support and reduce the risk of hinge damage.
It effectively avoids damage to the hinges of the manhole cover when opening and closing, improves the service life and safety of the manhole cover, simplifies the operation process, and reduces manufacturing costs.
Smart Images

Figure CN223893423U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of manhole cover technology, and in particular to a hinged manhole cover. Background Technology
[0002] Electrical inspection wells are a basic public facility. Currently, most of their covers lack anti-theft features, making them frequent targets for theft. This not only damages public facilities but also endangers public safety. Existing manhole covers have overly complex anti-theft structures, resulting in high manufacturing costs and inconvenient operation.
[0003] The existing publication number CN203440835U discloses a hinged anti-theft manhole cover. This hinged anti-theft manhole cover includes an annular manhole ring and a circular cover body hinged to the manhole ring. An opening hole is provided at the distal end of the hinge on the cover body. A protective lock mounting bracket is provided at the opening hole on the inner side of the cover body. The protective lock includes a bolt with a triangular bolt head and a locking plate connected to the tail end of the bolt. The bolt is threadedly connected to the protective lock mounting bracket, and the locking plate can rotate to below the manhole ring. This utility model of a hinged anti-theft manhole cover, by setting a protective lock on the cover body hinged to the manhole ring and designing the bolt head of the protective lock as triangular, achieves a mechanical locking function during use. This requires the use of a special socket tool to open, greatly improving the anti-theft performance and security of the manhole cover.
[0004] However, when the aforementioned hinged anti-theft manhole cover is opened or closed, the cover is limited by a hinge on its side. During use, the hinge is subjected to a large torsional force, which can easily cause damage. Summary of the Invention
[0005] The purpose of this utility model is to provide a hinged manhole cover, which solves the problem that when a hinged anti-theft manhole cover is opened and closed, the cover is limited by the hinge on its side, and the hinge is subjected to a large torsional force during use, which can easily cause damage.
[0006] To achieve the above objectives, this utility model provides a hinged manhole cover, including a manhole ring, a cover plate assembly, an installation assembly, and a fixing assembly. The cover plate assembly includes a rotating shaft, a handle, a cover body, and a washer. There are two rotating shafts, each rotatably connected to the manhole ring and passing through it. There are two handles, each fixedly connected to a rotating shaft and located on the outside of the manhole ring. The cover body is fixedly connected to the handle and located inside the manhole ring. The washer is fixedly connected to the cover body and located between the cover body and the manhole ring. The installation assembly is connected to the manhole ring, and the fixing assembly is connected to the cover body.
[0007] The cover plate assembly further includes a limiting plate, hinges, and a support plate. The limiting plate is fixedly connected to the cover body and is located on the top of the cover body. There are two hinges, each fixedly connected to the limiting plate and located on the outside of the limiting plate. The support plate is fixedly connected to the hinges and located on the outside of the hinges.
[0008] The installation assembly includes a pull rod and an anti-theft buckle. The pull rod is slidably connected to the limiting plate and is located on top of the limiting plate. The anti-theft buckle is detachably connected to the limiting plate and is located on top of the limiting plate.
[0009] The installation assembly further includes anti-slip strips and reinforcing ribs. The anti-slip strips are fixedly connected to the well ring and located at the bottom of the well ring. There are multiple reinforcing ribs, each of which is fixedly connected to the anti-slip strip and located on the outside of the anti-slip strip.
[0010] The fixing component includes a fixing seat, a rotating block, and a fixing block. The fixing seat is rotatably connected to the cover and is located inside the cover. The rotating block is rotatably connected to the fixing seat and passes through the manhole cover. The fixing block is fixedly connected to the rotating block and is located at the bottom of the manhole ring.
[0011] This utility model discloses a hinged manhole cover. The manhole ring is installed on top of the inspection well. The rotating shaft provides support and rotation for the handle and the cover body. The handle provides a limiting function for the cover body. The cover body is used to seal the inspection well. The gasket provides protection for the cover body. When sealing the inspection well, the fixing component is released from the cover body. The pull rod rotates the cover body and the limiting plate along the rotating shaft, causing the cover body to open. The gasket contacts the manhole ring and provides support for the cover body. At the same time, the limiting plate provides support for the cover body and distributes the force evenly to the top of the manhole ring, preventing damage to the cover body. This invention solves the problem that when hinged anti-theft manhole covers are opened and closed, the manhole cover is limited by the hinge on its side, and the hinge is subjected to a large torsional force during use, which easily leads to damage. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.
[0013] Figure 1 This is a schematic diagram of the overall structure of the hinged manhole cover according to the first embodiment of this utility model.
[0014] Figure 2 This is a schematic diagram of the cover plate assembly according to the first embodiment of the present invention.
[0015] Figure 3 This is a schematic diagram of the installation component according to the first embodiment of the present invention.
[0016] Figure 4 This is a structural schematic diagram of the fixing component of the first embodiment of this utility model.
[0017] In the diagram: 101-Well ring, 102-Spindle, 103-Turner, 104-Cover, 105-Washer, 106-Limiting plate, 107-Hinge, 108-Panel, 109-Pull rod, 110-Anti-theft buckle, 111-Anti-slip strip, 112-Reinforcing rib, 113-Fixing base, 114-Rotating block, 115-Fixing block. Detailed Implementation
[0018] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.
[0019] The first embodiment of this application is as follows:
[0020] Please see Figures 1 to 4 ,in, Figure 1 This is a schematic diagram of the overall structure of the hinged manhole cover according to the first embodiment of this utility model. Figure 2 This is a structural schematic diagram of the cover plate assembly according to the first embodiment of this utility model. Figure 3 This is a schematic diagram of the installation component according to the first embodiment of this utility model. Figure 4 This is a schematic diagram of the fixing component of the first embodiment of the present invention. The present invention provides a hinged manhole cover, including a manhole ring 101, a cover plate assembly, an installation assembly, and a fixing assembly. The cover plate assembly includes a rotating shaft 102, a handle 103, a cover body 104, a washer 105, a limiting plate 106, a hinge 107, a support plate 108, a pull rod 109, and an anti-theft buckle 110. The installation assembly includes an anti-slip strip 111 and a reinforcing rib 112. The fixing assembly includes a fixing seat 113, a rotating block 114, and a fixing block 115. The aforementioned solution solves the problem that when the hinged anti-theft manhole cover is opened and closed, the manhole cover is limited by the hinge on its side, and the hinge is subjected to a large torsional force during use, which easily leads to damage. It can be understood that the aforementioned solution can be used in scenarios where the force on the manhole cover is evenly distributed, and can also be used to solve the problem of fixing the manhole cover.
[0021] In this specific embodiment, there are two rotating shafts 102, each rotatably connected to and passing through the manhole ring 101. There are also two handles 103, each fixedly connected to one of the rotating shafts 102 and located on the outside of the manhole ring 101. The cover 104 is fixedly connected to the handles 103 and located inside the manhole ring 101. The washer 105 is fixedly connected to the cover 104 and located between the cover 104 and the manhole ring 101. The mounting assembly is connected to the manhole ring 101, and the fixing assembly is connected to the cover 104. The manhole ring 101 is used to install on top of the inspection well, and the rotating shaft 102 is the handle. The handle 103 and the cover 104 provide support and rotation. The handle 103 provides a limiting function for the cover 104. The cover 104 is used to seal the inspection well. The gasket 105 provides protection for the cover 104. When sealing the inspection well, the fixing assembly is released from fixing the cover 104. The pull rod 109 rotates the cover 104 and the limiting plate 106 along the rotating shaft 102, causing the cover 104 to open. The gasket 105 contacts the well ring 101 and provides support for the cover 104. At the same time, the limiting plate 106 provides support for the cover 104 and distributes the force evenly to the top of the well ring 101 to prevent damage to the cover 104.
[0022] The limiting plate 106 is fixedly connected to the cover 104 and located on top of the cover 104. There are two hinges 107, which are fixedly connected to the limiting plate 106 and located on the outer side of the limiting plate 106. The support plate 108 is fixedly connected to the hinges 107 and located on the outer side of the hinges 107. The limiting plate 106 provides support for the cover 104, and the hinges 107 provide rotation for the support plate 108. The support plate 108 is used to flatten the top of the manhole ring 101 to prevent people from falling when passing by the manhole ring 101.
[0023] Secondly, the pull rod 109 is slidably connected to the limiting plate 106 and is located on top of the limiting plate 106. The anti-theft buckle 110 is detachably connected to the limiting plate 106 and is located on top of the limiting plate 106. The pull rod 109 facilitates the opening of the cover 104, allowing workers to enter the inspection well to inspect the equipment. The anti-theft buckle 110 is used to protect the fixing components and prevent the cover 104 from being stolen.
[0024] Furthermore, the anti-slip strip 111 is fixedly connected to the well ring 101 and located at the bottom of the well ring 101. There are multiple reinforcing ribs 112, each fixedly connected to the anti-slip strip 111 and located on the outside of the anti-slip strip 111. The anti-slip strip 111 and the reinforcing ribs 112 provide a limiting function for the well ring 101. When installing the well ring 101, the anti-slip strip 111 and the reinforcing ribs 112 prevent the well ring 101 from shaking, making it easier to install and fix the well ring 101.
[0025] Finally, the fixing seat 113 is rotatably connected to the cover 104 and located inside the cover 104. The rotating block 114 is rotatably connected to the fixing seat 113 and passes through the manhole cover. The fixing block 115 is fixedly connected to the rotating block 114 and located at the bottom of the manhole ring 101. The fixing seat 113 provides a limiting function for the rotating block 114 and the fixing block 115. The rotating block 114 provides a supporting function for the fixing block 115. The fixing block 115 is used to limit the cover 104. When fixing the cover 104, it can be opened. The anti-theft buckle 110 is used to rotate the fixing base 113 with a specific tool, causing the rotating block 114 and the fixing block 115 to rotate, thus engaging the fixing block 115 with the well ring 101 to fix the position of the cover 104. When it is necessary to open the cover 104, the anti-theft buckle 110 is opened, and the fixing base 113 is rotated with a specific tool, causing the rotating block 114 and the fixing block 115 to rotate, thus disengaging the fixing block 115 from the well ring 101. The cover 104 can then be removed from the well ring 101 via the pull rod 109.
[0026] Using the hinged manhole cover of this embodiment, the manhole ring 101 is used to install on the top of the inspection well. The rotating shaft 102 provides support and rotation for the handle 103 and the cover body 104. The handle 103 provides a limiting function for the cover body 104. The cover body 104 is used to seal the inspection well. The gasket 105 provides protection for the cover body 104. When sealing the inspection well, the fixing assembly is released from the cover body 104, and the cover body 104 is secured by the pull rod 109. The limiting plate 106 rotates along the rotating shaft 102, causing the cover 104 to open. The washer 105 contacts the well ring 101 and provides support for the cover 104. At the same time, the limiting plate 106 provides support for the cover 104 and distributes the force evenly to the top of the well ring 101, preventing damage to the cover 104. This solves the problem that when hinged anti-theft well covers are opened and closed, the well cover is limited by the hinge on its side, and the hinge is subjected to a large torsional force during use, which can easily cause damage.
[0027] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.
Claims
1. A hinged manhole cover, comprising a manhole ring, characterized in that, It also includes cover plate assemblies, mounting assemblies, and fixing assemblies; The cover plate assembly includes a rotating shaft, a handle, a cover body, and a washer. There are two rotating shafts, each rotatably connected to the well ring and passing through it. There are two handles, each fixedly connected to a rotating shaft and located on the outside of the well ring. The cover body is fixedly connected to the handle and located inside the well ring. The washer is fixedly connected to the cover body and located between the cover body and the well ring. The mounting assembly is connected to the well ring, and the fixing assembly is connected to the cover body.
2. The hinged manhole cover as described in claim 1, characterized in that, The cover plate assembly further includes a limiting plate, hinges, and a support plate. The limiting plate is fixedly connected to the cover body and is located at the top of the cover body. There are two hinges, each fixedly connected to the limiting plate and located on the outside of the limiting plate. The support plate is fixedly connected to the hinges and located on the outside of the hinges.
3. The hinged manhole cover as described in claim 2, characterized in that, The mounting assembly includes a pull rod and an anti-theft buckle. The pull rod is slidably connected to the limiting plate and is located on top of the limiting plate. The anti-theft buckle is detachably connected to the limiting plate and is located on top of the limiting plate.
4. The hinged manhole cover as described in claim 3, characterized in that, The mounting assembly also includes anti-slip strips and reinforcing ribs. The anti-slip strips are fixedly connected to the well ring and located at the bottom of the well ring. There are multiple reinforcing ribs, each of which is fixedly connected to the anti-slip strip and located on the outside of the anti-slip strip.
5. The hinged manhole cover as described in claim 1, characterized in that, The fixing component includes a fixing seat, a rotating block, and a fixing block. The fixing seat is rotatably connected to the cover and is located inside the cover. The rotating block is rotatably connected to the fixing seat and passes through the manhole cover. The fixing block is fixedly connected to the rotating block and is located at the bottom of the manhole ring.
Citation Information
Patent Citations
Hinge type anti-theft well lid
CN203440835U