一种安装稳固的球墨铸铁井盖
By incorporating a connecting sleeve, baffle, pressure ring, and spring structure inside the manhole cover, combined with a support shaft, turntable, and linkage mechanism, the problems of inconvenient adjustment of the water inlet efficiency and unstable installation of the manhole cover are solved, thus achieving stable installation and safe use of the manhole cover at the wellhead.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANDAN CITY ZHUOFENG METAL PROD CO LTD
- Filing Date
- 2025-08-06
- Publication Date
- 2026-07-17
AI Technical Summary
Existing ductile iron manhole covers are not easy to adjust in terms of water inlet efficiency, are not securely installed, and pose safety hazards when stepped on.
By incorporating a connecting sleeve, baffle, pressure ring, and spring structure with bearing connections inside the manhole cover, combined with a support shaft, turntable, and linkage mechanism, the rotation and limit adjustment of the manhole cover can be achieved, ensuring stable installation of the manhole cover at the wellhead and adjustment of the drainage speed.
This design achieves a stable installation of the manhole cover at the manhole opening, allows for adjustment of the drainage speed, facilitates safe use, and improves safety.
Smart Images
Figure CN224514370U_ABST
Abstract
Claims
1. A stable installed ductile cast iron manhole cover comprising a manhole cover (1), characterized in that: The manhole cover (1) has a connecting sleeve (2) installed inside by a bearing. A cover (3) is fixedly connected to the lower end of the connecting sleeve (2). The cover (3) and the manhole cover (1) are rotatably connected. An installation mechanism (4) is provided on the manhole cover (1). A pressure ring (5) is slidably connected to the outside of the connecting sleeve (2). A spring (6) is provided on the outside of the connecting sleeve (2).
2. The secure installation of a ductile iron manhole cover as described in claim 1, wherein: One end of the spring (6) is fixedly connected to the well cover (1), and the other end of the spring (6) is fixedly connected to the pressure ring (5).
3. The secure installation of a ductile iron manhole cover as described in claim 1, wherein: The pressure ring (5) has a guide block fixedly connected to its surface, and the guide block and the well cover (1) are slidably connected.
4. The secure installation of a ductile iron manhole cover as described in claim 1, wherein: The lower end of the pressure ring (5) is fixedly connected to a tooth (7), and the tooth (7) and the cover (3) are slidably connected.
5. The secure installation of a ductile iron manhole cover as described in claim 1, wherein: The installation mechanism (4) includes a support shaft (41), the support shaft (41) is rotatably connected inside the connecting sleeve (2), the support shaft (41) and the cover (3) are rotatably connected, the lower end of the support shaft (41) is fixedly connected to a turntable (42), the turntable (42) and the cover (3) are rotatably connected, the turntable (42) is slidably connected to a connecting rod (43), and the lower end of the connecting rod (43) is fixedly connected to a sliding pin (45).
6. The secure installation of a ductile iron manhole cover as described in claim 5, wherein: The end of the connecting rod (43) is fixedly connected to a strip (44), and the strip (44) is slidably connected to the manhole cover (1).
7. The secure installation of a ductile iron manhole cover as described in claim 5, wherein: The turntable (42) is fixedly connected to a guide groove (46), and the guide groove (46) is slidably connected to a sliding pin (45).