Nodular cast iron well lid for low-lying road section in municipal engineering

Abstract

The utility model discloses a nodular cast iron well lid for municipal engineering low-lying road sections, which comprises a well lid body, a roadbed and a mounting rack, the well lid body is movably mounted on the top surface of the roadbed, a drainage channel is arranged between the roadbed and the well lid body, the mounting rack is mounted on the bottom surface of the roadbed through fastening bolts, and the middle end of the mounting rack is in threaded connection with a screw rod. The other end of the screw rod is fixedly connected with a ball bearing which is movably connected to the inner surface of the middle end of the well lid body. A sealing ring is arranged between the well lid body and the drainage groove. According to the nodular cast iron well lid for the low-lying road section in the municipal engineering, the nodular cast iron well lid can better adapt to the special environment of the low-lying road section, the gap between the well lid body and the roadbed is adjusted, the drainage groove is sealed in cooperation with the sealing ring, and pressure balance between a low-lying area and a high-terrain area is achieved; and the problem of water accumulation caused by terrain limitation is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cast iron manhole covers, and particularly relates to a nodular cast iron manhole cover for low-lying sections in municipal engineering. Background Technique

[0002] In municipal engineering, low-lying sections often face the problem of water accumulation. Especially during heavy rainfall, when there is a lot of water accumulation, the existing municipal manhole cover designs often rely on the mutual pressure relief balance between multiple areas to adjust the water level. However, this design is not applicable in low-lying areas because due to the terrain, the accumulated water level cannot be discharged upward. As a result, even when there is no water accumulation in high-lying areas, the water accumulation situation in low-lying areas is still very serious.

[0003] This problem is mainly because the accumulated water in low-lying areas relieves pressure and does not meet the pressure requirements for draining water from high-lying areas. When rainfall occurs, the accumulated water in low-lying areas will quickly accumulate. Due to the terrain limitations, the accumulated water cannot flow smoothly to high-lying areas for discharge, which leads to the inability to effectively solve the problem of water accumulation in low-lying areas and brings great trouble to municipal engineering. Therefore, a nodular cast iron manhole cover for low-lying sections in municipal engineering is needed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a nodular cast iron manhole cover for low-lying sections in municipal engineering to solve the problem that due to terrain limitations, the accumulated water cannot flow smoothly to high-lying areas for discharge as mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A nodular cast iron manhole cover for low-lying sections in municipal engineering, including a manhole cover body, a roadbed, and a mounting frame. The manhole cover body is movably installed on the top surface of the roadbed. A drainage groove is provided between the roadbed and the manhole cover body. The mounting frame is installed on the bottom surface of the roadbed through fastening bolts. A screw rod is threadedly connected to the middle end of the mounting frame. The other end of the screw rod is fixedly connected with a ball bearing. The ball bearing is movably connected to the inner surface of the middle end of the manhole cover body. A sealing ring is provided between the manhole cover body and the drainage groove.

[0006] As a preferred technical solution of the content of the utility model, a hexagonal groove is provided at the top end of the ball bearing, and the thickness of the ball bearing is the same as the thickness of the manhole cover body.

[0007] As a preferred technical solution of the content of the utility model, the outer edge of the manhole cover body is in an arc-shaped structure.

[0008] As a preferred technical solution of the content of the utility model, guide rods are symmetrically distributed at the bottom end of the manhole cover body, and the guide rods are slidably matched with the mounting frame.

[0009] As a preferred technical solution of the content of the present utility model, the installation frame is internally provided with reinforcing ribs. The outer edge of the reinforcing rib is in a circular structure, and the inner edge of the reinforcing rib is in a cross-shaped structure.

[0010] Compared with the prior art, the beneficial effects of the ductile iron manhole cover for low-lying sections in the municipal engineering of the present utility model are as follows:

[0011] The combined design of a ball bearing and a screw rod is adopted. By rotating to adjust the vertical height of the manhole cover body, the closure between the manhole cover body and the roadbed is realized. This structural innovation effectively solves the problem that water accumulation in low-lying areas cannot be discharged upward due to the terrain, improves the drainage efficiency. The hexagonal groove at the top of the ball bearing corresponds to the hexagonal tool, and the operation is simple. Only by rotating the tool can the height of the manhole cover be adjusted, which is convenient for construction and maintenance personnel to carry out installation and drainage operations. The outer edge of the manhole cover body is in an arc-shaped structure, which has a good buffering effect, reduces the impact on vehicle driving, and ensures the smoothness of the road. The bottom end of the manhole cover body is symmetrically distributed with guide rods, which are slidably matched with the installation frame, playing a guiding role and ensuring the stability and reliability of the manhole cover body during the drainage process. The installation frame is internally provided with reinforcing ribs, which increases the overall connection strength, improves the bearing capacity and compressive performance of the manhole cover, enabling it to better adapt to the special environment of low-lying sections. By adjusting the gap between the manhole cover body and the roadbed and cooperating with the sealing ring to seal the drainage groove, the pressure balance between the low-lying area and the high-lying area is realized, effectively solving the problem of water accumulation caused by terrain restrictions. Description of the Drawings

[0012] Figure 1 It is a front internal structure schematic diagram of the whole of the present utility model;

[0013] Figure 2 It is a front internal structure schematic diagram of the manhole cover body of the present utility model;

[0014] Figure 3 It is a bottom view structure schematic diagram of the manhole cover body and the installation frame of the present utility model;

[0015] Figure 4 It is a top view structure schematic diagram of the manhole cover body of the present utility model.

[0016] In the figure: 1, manhole cover body; 2, roadbed; 3, drainage groove; 4, sealing ring; 5, ball bearing; 6, hexagonal groove; 7, screw rod; 8, installation frame; 9, reinforcing rib; 10, fastening bolt; 11, guide rod. Detailed Implementation Manner

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0018] Please refer to Figures 1-4 , the present utility model provides a technical solution: a ductile iron manhole cover for low-lying sections in municipal engineering, including a manhole cover body 1, a roadbed 2, and a mounting frame 8. The manhole cover body 1 is movably installed on the top surface of the roadbed 2. A drainage groove 3 is provided between the roadbed 2 and the manhole cover body 1. The mounting frame 8 is installed on the bottom surface of the roadbed 2 through fastening bolts 10. A screw rod 7 is threadedly connected to the middle end of the mounting frame 8. The other end of the screw rod 7 is fixedly connected to a ball bearing 5. The ball bearing 5 is movably connected to the inner surface of the middle end of the manhole cover body 1. A sealing ring 4 is provided between the manhole cover body 1 and the drainage groove 3.

[0019] A hexagonal groove 6 is provided at the top end of the ball bearing 5. The thickness of the ball bearing 5 is the same as the thickness of the manhole cover body 1. The ball bearing 5 is fixedly connected to the screw rod 7. The ball bearing 5 corresponds to a hexagonal tool through the hexagonal groove 6 provided at the top end. By rotating the tool, the screw rod 7 rotates synchronously, so as to facilitate the threaded transmission between the screw rod 7 and the mounting frame 8 and adjust the vertical height of the manhole cover body 1. The closing of the manhole cover body 1 and the roadbed 2 is realized by using the height change.

[0020] The outer edge of the manhole cover body 1 is in an arc-shaped structure. The outer edge shape structure of the manhole cover body 1 can play a good buffering role, and will not cause a great impact on vehicle driving when the manhole cover rises and falls for drainage.

[0021] Guide rods 11 are symmetrically distributed at the bottom end of the manhole cover body 1. The guide rods 11 are slidably matched with the mounting frame 8. The guide rods 11 are fixedly and symmetrically distributed at the bottom end of the manhole cover body 1, and can play a guiding role for the manhole cover body 1.

[0022] Reinforcing ribs 9 are provided inside the mounting frame 8. The outer edge of the reinforcing ribs 9 is in a circular structure, and the inner edge of the reinforcing ribs 9 is in a cross-shaped structure. The reinforcing ribs 9 can increase the overall connection strength of the mounting frame 8, thereby increasing the overall practicability.

[0023] Working principle: When drainage is required, a hexagonal wrench is used to correspond to the hexagonal groove 6 of the ball bearing 5, and the screw rod 7 is thread-driven with the mounting frame 8 by rotation. In cooperation with the guide rod 11 sliding and guiding in the mounting frame 8, a gap is generated between the well cover body 1 and the roadbed 2, and the accumulated water can be discharged into or out of the drainage groove 3. When the well cover installed in a low-lying area needs to balance the pressure with a high-lying area, according to the above operation steps, the well cover body 1 is closely attached to the roadbed 2, and the drainage groove 3 is sealed with the cooperation of the sealing ring 4, so as to balance the pressure between the two areas.

[0024] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A nodular cast iron manhole cover for low-lying sections in municipal engineering, characterized in that, It includes a manhole cover body (1), a roadbed (2) and a mounting frame (8). The manhole cover body (1) is movably installed on the top surface of the roadbed (2). A drainage groove (3) is provided between the roadbed (2) and the manhole cover body (1). The mounting frame (8) is installed on the bottom surface of the roadbed (2) through fastening bolts (10). A screw rod (7) is threadedly connected to the middle end of the mounting frame (8). The other end of the screw rod (7) is fixedly connected to a ball bearing (5). The ball bearing (5) is movably connected to the inner surface of the middle end of the manhole cover body (1). A sealing ring (4) is provided between the manhole cover body (1) and the drainage groove (3).

2. The nodular cast iron manhole cover for low-lying sections in municipal engineering according to claim 1, wherein: A hexagonal groove (6) is provided at the top end of the ball bearing (5). The thickness of the ball bearing (5) is the same as the thickness of the manhole cover body (1).

3. A nodular cast iron manhole cover for low-lying sections in municipal engineering according to claim 1, characterized in that: The outer edge of the manhole cover body (1) is in an arc-shaped structure.

4. A nodular cast iron manhole cover for low-lying sections in municipal engineering according to claim 1, characterized in that: Guide rods (11) are symmetrically distributed at the bottom end of the manhole cover body (1). The guide rods (11) are in sliding fit with the mounting frame (8).

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