A type of precast concrete inspection well designed to prevent settlement

Abstract

This utility model relates to the field of precast inspection wells and discloses a precast concrete inspection well with anti-settlement design. It includes a precast well body, an anti-settlement mechanism on the inner sidewall of the body, and a pressure-resistant component at the top. A sliding ring is threaded onto the surface of a threaded rod, and a guide rod is slidably connected through the inner sidewall of the sliding ring. A protrusion is fixedly connected to the bottom end of the outer wall of the sliding ring, and a hinge rod a is hinged to the bottom end of the protrusion. A hinge rod b is hinged to the bottom end of the outer wall of hinge rod a. In this utility model, the rotating block drives the threaded rod to move the sliding ring up and down, thereby expanding the hinge rod structure outward, effectively increasing the contact area between the well body and the soil, and forming a soil-embedded space. This "soil anchoring" design is like building a stable support network around the well body, firmly fixing the well body in the soil.

Description

Technical Field

[0001] This utility model relates to the field of precast inspection wells, and more particularly to a precast concrete inspection well designed to prevent settlement. Background Technology

[0002] Precast concrete inspection wells are underground pipeline auxiliary structures produced using precast concrete technology. They are mainly used in urban drainage, sewage, power, and communication pipeline systems to connect, branch, inspect, and maintain pipelines.

[0003] However, existing precast manholes mostly use a simple direct burial installation, with the connection between the manhole body and the surrounding soil relying solely on the natural compaction of the backfill. Over time, factors such as changes in groundwater levels and vehicle loads can cause the backfill to loosen and erode, leading to voids between the manhole body and the soil. This results in settlement and tilting of the manhole, which not only disrupts the smooth flow of the drainage system, causing sewage backflow and pipe disconnection, but may also lead to road collapse, endangering the safety of pedestrians and vehicles. Therefore, a settlement-resistant precast concrete manhole is proposed to solve these problems. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a precast concrete inspection well designed to prevent settlement. It aims to improve the problem in the prior art where, over time, the backfill soil is prone to loosening and loss due to factors such as changes in groundwater level and vehicle load impacts, resulting in gaps between the well body and the soil, causing the inspection well to settle and tilt.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a precast concrete inspection well for preventing settlement, comprising a precast well body, wherein an anti-settlement mechanism is provided on the inner side wall of the precast well body, and an anti-compression component is provided on the top of the precast well body.

[0006] The anti-settlement mechanism includes a rotating block, a threaded rod fixedly connected to the rotating center shaft of the rotating block, a sliding ring threadedly connected to the surface of the threaded rod, a guide rod slidably connected through the inner side wall of the sliding ring, a protrusion fixedly connected to the bottom end of the outer wall of the sliding ring, a hinge rod a hinged to the bottom end of the protrusion, and a hinge rod b hinged to the bottom end of the outer wall of the hinge rod a.

[0007] As a further description of the above technical solution:

[0008] The anti-compression component includes a fixed column, the top of the outer wall of the fixed column is elastically connected to an installation ring by a pressure spring, a damping ring is provided on the inner side wall of the fixed column, and the top of the outer wall of the damping ring contacts a sliding column.

[0009] As a further description of the above technical solution:

[0010] The rotating block is rotatably connected to the top of the outer wall of the precast well body, and a cavity is opened in the upper inner wall of the precast well body.

[0011] As a further description of the above technical solution:

[0012] The guide rod is fixedly connected to the inner wall of the cavity at the upper end of the precast well body, and the threaded rod is rotatably connected to the inner wall of the cavity of the precast well body.

[0013] As a further description of the above technical solution:

[0014] The sliding ring is circular and is slidably connected to the inner wall of the cavity at the upper end of the precast well body.

[0015] As a further description of the above technical solution:

[0016] The bottom end of the outer wall of the hinge rod b is hinged to the inner wall of the bottom end of the prefabricated well body.

[0017] As a further description of the above technical solution:

[0018] The damping ring is fixedly connected to the inner wall of the top of the precast well body, and the top of the outer wall of the sliding column is fixedly connected to the bottom of the outer wall of the mounting ring.

[0019] As a further description of the above technical solution:

[0020] One end of the pressure spring is fixedly connected to the bottom end of the outer wall of the mounting ring, and the other end of the pressure spring is fixedly connected to the top end of the outer wall of the fixing column.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the rotating block drives the threaded rod to move the sliding ring up and down, thereby expanding the hinged rod structure outward, effectively increasing the contact area between the well body and the soil, and forming a soil-embedded space. This "soil anchoring" design is like building a stable support network around the well body, firmly fixing the well body in the soil.

[0023] 2. In this utility model, when a vehicle passes by, the pressure spring absorbs the impact force through elastic deformation, and the damping ring further consumes the vibration energy. Under the dual action, the impact of external pressure on the well body is greatly reduced, effectively preventing the well body from cracking and the well cover from loosening. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a precast concrete inspection well for preventing settlement, as proposed in this utility model.

[0025] Figure 2This is a partial cross-sectional structural diagram of the precast concrete inspection well body for preventing settlement, as proposed in this utility model.

[0026] Figure 3 This is a partial cross-sectional view of the upper part of the precast well body of a precast concrete inspection well for preventing settlement, as proposed in this utility model.

[0027] Figure 4 This utility model proposes a precast concrete inspection well for preventing settlement. Figure 3 Enlarged structural diagram of section A.

[0028] Legend:

[0029] 1. Precast well body; 2. Anti-settlement mechanism; 21. Rotating block; 22. Threaded rod; 23. Sliding ring; 24. Guide rod; 25. Protrusion; 26. Hinge rod a; 27. Hinge rod b; 3. Anti-compression component; 31. Fixed column; 32. Damping ring; 33. Sliding column; 34. Pressure spring; 35. Mounting ring. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figures 1-3 An embodiment of this utility model is provided: a precast concrete inspection well for preventing settlement, including a precast well body 1, which is a precast concrete pipe well in the prior art, with a through cavity in the center, an anti-settlement mechanism 2 provided on the inner side wall of the precast well body 1, and an anti-compression component 3 provided on the top of the precast well body 1.

[0032] Reference Figure 2The anti-settlement mechanism 2 includes a rotating block 21, which is rotatably connected to the top of the outer wall of the precast well body 1. A cavity is formed in the upper inner wall of the precast well body 1. A threaded rod 22 is fixedly connected to the rotation center axis of the rotating block 21. By rotating the rotating block 21, the threaded rod 22 can be driven to rotate synchronously. The threaded rod 22 is rotatably connected to the inner wall of the cavity of the precast well body 1. A sliding ring 23 is threadedly connected to the surface of the threaded rod 22. An internal thread groove is formed on one side of the sliding ring 23. By rotating the threaded rod 22, the sliding ring 23 can move up and down on its surface. The sliding ring 23 is annular in shape and slidably connected to the inner wall of the upper cavity of the precast well body 1. A guide rod 24 is slidably connected through and slidably connected to the inner side wall of the sliding ring 23. The guide rod 24 is fixedly connected to the upper end of the precast well body 1. The inner wall of the cavity is equipped with a guide rod 24 to guide the up-and-down movement of the sliding ring 23. A protrusion 25 is fixedly connected to the bottom end of the outer wall of the sliding ring 23. A hinge rod a26 is hinged to the bottom end of the protrusion 25. A hinge rod b27 is hinged to the bottom end of the outer wall of the hinge rod a26. The bottom end of the outer wall of the hinge rod b27 is hinged to the inner wall of the bottom end of the precast well body 1. When the sliding ring 23 descends, it will drive the protrusion 25 to descend synchronously, thereby pushing the hinge rod a26 to unfold around the hinge point of the hinge rod b27. Since the bottom end of the hinge rod b27 is also hinged to the bottom end of the precast well body 1, the whole structure expands outward, thereby increasing the contact area with the soil. In conjunction with the hollow groove after it is opened, the soil can be embedded inside, thereby increasing the contact area with the soil during installation.

[0033] Reference Figures 3-4 The anti-pressure component 3 includes a fixed column 31, a damping ring 32 fixedly connected to the inner wall of the top of the precast well body 1, the top of the outer wall of the sliding column 33 fixedly connected to the bottom of the outer wall of the mounting ring 35, the top of the outer wall of the fixed column 31 elastically connected to the mounting ring 35 through a pressure spring 34, one end of the pressure spring 34 fixedly connected to the bottom of the outer wall of the mounting ring 35, and the other end of the pressure spring 34 fixedly connected to the top of the outer wall of the fixed column 31. The function of the pressure spring 34 is to automatically reset the position of the sliding column 33 after the mounting ring 35 drives it to descend, and to contact the bottom of the sliding column 33 through the damping effect of the damping ring 32, thereby reducing the impact of the descent of the mounting ring 35 and preventing the manhole cover installed on the surface of the mounting ring 35 from settling when a vehicle passes over it. The inner side wall of the fixed column 31 is provided with a damping ring 32, and the top of the outer wall of the damping ring 32 contacts the sliding column 33.

[0034] Working Principle: The anti-settlement mechanism 2 mainly improves stability by increasing the contact area between the well body and the soil. A rotating block 21, rotatably connected to the top of the outer wall of the precast well body 1, has its rotation center axis fixedly connected to a threaded rod 22. When the rotating block 21 is rotated using a tool, the threaded rod 22 rotates synchronously. Since the threaded rod 22 is rotatably connected to the cavity on the upper inner wall of the precast well body 1, and its surface threads mesh with the internal thread groove on one side of the sliding ring 23, the rotation of the threaded rod 22 drives the sliding ring 23 to move up and down on its surface. The sliding ring 23 is annular and slidably connected to the inner wall of the upper cavity of the precast well body 1. Simultaneously, a guide rod 24 is slidably connected through and slidably to the inner side wall. The guide rod 24 is fixed to the inner wall of the upper cavity of the precast well body 1, thus restricting the movement direction of the sliding ring 23 and ensuring that the sliding ring 23 can only move stably in the up-down direction. The sliding ring 23 is fixed to a fixed position to avoid circumferential rotation caused by the rotation of the threaded rod 22. The protrusion 25 fixed at the bottom of the outer wall of the sliding ring 23 moves down synchronously with the sliding ring 23. The bottom end of the protrusion 25 is hinged to the hinge rod a26, and the lower end of the hinge rod b27 is hinged to the hinge rod b27. The bottom end of the hinge rod b27 is hinged to the inner wall of the bottom end of the precast well body 1. When the sliding ring 23 descends, the protrusion 25 pushes the hinge rod a26 to expand outward around the hinge point of the hinge rod b27. Since the bottom end of the hinge rod b27 is fixed, the entire hinge structure expands outward. In this process, the outward expansion structure not only increases the contact area with the soil, but also forms a groove that allows the soil to be embedded in it, just like anchoring in the soil. This greatly enhances the tightness of the bond between the precast well body 1 and the surrounding soil, effectively preventing the well body from settling due to uneven stress or soil loosening during long-term use.

[0035] When heavy objects such as vehicles pass over the precast well body 1, the well cover installed on the surface of the mounting ring 35 is subjected to pressure. The pressure is transmitted to the mounting ring 35, causing it to drive the sliding column 33 to move downward against the elastic force of the pressure spring 34. During this process, the bottom end of the sliding column 33 contacts the damping ring 32. The damping ring 32 uses its own damping characteristics to consume and reduce the impact force of the sliding column 33 descending, thus preventing the mounting ring 35 from sinking rapidly and significantly.

[0036] When the pressure spring 34 is compressed, it stores elastic potential energy. When the external pressure disappears, the pressure spring 34 releases the elastic potential energy, pushing the mounting ring 35 to drive the sliding column 33 to return to its original position. Through the elastic buffering of the pressure spring 34 and the damping and shock absorption of the damping ring 32, the impact of external pressure on the prefabricated well body 1 is effectively reduced, preventing well body subsidence caused by excessive instantaneous impact force, and ensuring the stability of the inspection well in long-term use.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A precast concrete inspection well for preventing settlement, comprising a precast well body (1), characterized in that: The inner sidewall of the prefabricated well body (1) is provided with an anti-settlement mechanism (2), and the top of the prefabricated well body (1) is provided with a pressure-resistant component (3). The anti-settlement mechanism (2) includes a rotating block (21), a threaded rod (22) is fixedly connected to the rotation center shaft of the rotating block (21), a sliding ring (23) is threadedly connected to the surface of the threaded rod (22), a guide rod (24) is slidably connected to the inner side wall of the sliding ring (23), a protrusion (25) is fixedly connected to the bottom end of the outer wall of the sliding ring (23), a hinge rod a (26) is hinged to the bottom end of the protrusion (25), and a hinge rod b (27) is hinged to the bottom end of the outer wall of the hinge rod a (26).

2. The precast concrete inspection well for preventing settlement according to claim 1, characterized in that: The anti-compression component (3) includes a fixed column (31), and the top of the outer wall of the fixed column (31) is elastically connected to an installation ring (35) by a pressure spring (34). The inner side wall of the fixed column (31) is provided with a damping ring (32), and the top of the outer wall of the damping ring (32) contacts a sliding column (33).

3. The precast concrete inspection well for preventing settlement according to claim 1, characterized in that: The rotating block (21) is rotatably connected to the top of the outer wall of the prefabricated well body (1), and the upper inner wall of the prefabricated well body (1) is provided with a cavity.

4. A precast concrete inspection well for preventing settlement according to claim 1, characterized in that: The guide rod (24) is fixedly connected to the inner wall of the upper cavity of the prefabricated well body (1), and the threaded rod (22) is rotatably connected to the inner wall of the cavity of the prefabricated well body (1).

5. A precast concrete inspection well for preventing settlement according to claim 1, characterized in that: The sliding ring (23) is circular and is slidably connected to the inner wall of the upper cavity of the precast well body (1).

6. A precast concrete inspection well for preventing settlement according to claim 1, characterized in that: The bottom end of the outer wall of the hinge rod b (27) is hinged to the inner wall of the bottom end of the prefabricated well body (1).

7. A precast concrete inspection well for preventing settlement according to claim 2, characterized in that: The damping ring (32) is fixedly connected to the inner wall of the top of the precast well body (1), and the top of the outer wall of the sliding column (33) is fixedly connected to the bottom of the outer wall of the mounting ring (35).

8. A precast concrete inspection well for preventing settlement according to claim 2, characterized in that: One end of the pressure spring (34) is fixedly connected to the bottom end of the outer wall of the mounting ring (35), and the other end of the pressure spring (34) is fixedly connected to the top end of the outer wall of the fixing column (31).

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