A manhole for municipal engineering

Abstract

This utility model discloses a manhole for municipal engineering, including a manhole body and a manhole cover. A ladder is installed inside the manhole body. One side of the manhole cover is connected to the manhole body via a pivot. The manhole body has a first step for placing the manhole cover, and a vertical groove is provided on one side of the manhole body. The manhole body also has an opening connecting the first step and the vertical groove. The manhole cover has a connecting part that passes through the opening and extends into the vertical groove. A hinge seat is movably installed within the vertical groove. The hinge seat and the connecting part are connected via the pivot. After the manhole cover is opened via the pivot, it can be inserted into the vertical groove. Multiple reflective strips are provided on both the front and back of the manhole cover. The hinge seat and pivot can move up and down within the vertical groove as the manhole cover moves. When the manhole cover is opened, part of it is inserted into the vertical groove, and part stands upright above the manhole body, ensuring a stable and secure positioning for enhanced safety during operation. The reflective strips provide a warning function on both sides of the upright manhole cover, reducing the occurrence of accidents.

Description

Technical Field

[0001] This utility model relates to the field of municipal engineering technology, specifically to a manhole for municipal engineering. Background Technology

[0002] Inspection wells are installed to facilitate the maintenance and installation of underground infrastructure such as power supply, water supply, drainage, sewage, communications, cable TV, gas pipes, and street light lines in cities. They are generally located at pipe intersections, bends, changes in pipe diameter or slope, and at regular intervals on straight pipe sections to facilitate periodic inspections of the ancillary structures. For example, Chinese utility model patent application number CN202322883554.8 discloses a manhole for municipal water supply and drainage networks, including a manhole cover, a manhole wall, and a moisture-proof structure. The moisture-proof structure is located on one side of the inner wall of the manhole wall, and a shell is located inside the moisture-proof structure. A moisture-proof board is located on one side of the shell, and a handle is located on one side of the moisture-proof board. A limiting block is also located on the upper side of the moisture-proof board, and a limiting clip is located at the opposite position of the shell. A fixing rod is located inside the shell at the opposite position of the handle. Two slide rails are located on both sides of the inner wall of the shell, and a lower manhole structure is located at the opposite position of the slide rails. The manhole wall is located below the manhole cover, and a connecting shaft is located at the connection between the manhole cover and the manhole wall. A plurality of drainage holes are also provided on the manhole cover. Existing manhole covers lack a positioning structure after opening, leaving the open manhole on the adjacent road before workers enter for inspection. This leaves the manhole opening empty, making it difficult for passing people or vehicles to see, increasing the risk of accidents and endangering workers inside. Alternatively, as with the aforementioned patent, the manhole cover may close at its maximum opening angle when a strong wind blows or other objects hit it, startling workers inside and disrupting their work. This still poses a certain degree of danger, and both types of manholes are even more dangerous during emergency nighttime operations. Utility Model Content

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a manhole cover with positioning and warning functions that is safer for municipal engineering.

[0004] Therefore, this utility model is implemented using the following technical solution:

[0005] A manhole for municipal engineering includes a manhole body and a manhole cover. A ladder is provided inside the manhole body. One side of the manhole cover is connected to the manhole body via a pivot. The manhole body has a first step for placing the manhole cover, a vertical groove on one side of the manhole body, and an opening connecting the first step and the vertical groove. The manhole cover has a connecting portion that passes through the opening and extends into the vertical groove. A hinge seat is movably provided within the vertical groove. The hinge seat and the connecting portion are connected via the pivot. The manhole cover can be inserted into the vertical groove after being opened via the pivot. Multiple reflective strips are provided on both the front and back of the manhole cover. The hinge seat and the pivot can move up and down within the vertical groove as the manhole cover moves.

[0006] Furthermore, a second step is provided on both the front and rear sides of the vertical groove. When the manhole cover is inserted into the vertical groove, the end faces of the manhole cover on both the front and rear sides of the connecting part abut against the second step.

[0007] Furthermore, a handle is movably provided on the other side of the opposite connection part of the manhole cover, and a locking block is movably provided at the lower end of the manhole cover. The inner wall of the manhole is provided with a locking groove aligned with the locking block. The handle can drive the locking block to insert into or disengage from the locking groove through a linkage structure.

[0008] Furthermore, the handle is hinged to the manhole cover via an optical axis, and the handle is L-shaped. The linkage structure includes a connecting rod, one end of which is hinged to the lower end of the handle and the other end of which is hinged to the locking block. The lower end of the manhole cover is detachably provided with a column by multiple bolts, and the column is provided with a guide through hole for the locking block to move left and right.

[0009] Furthermore, the lower end of the manhole cover is detachably provided with a base by multiple bolts, and the base is provided with an arc-shaped guide groove. A roller that can roll in the arc-shaped guide groove is sleeved on the shaft where the connecting rod is hinged to the handle.

[0010] Furthermore, the upper surface of the manhole cover is provided with a groove, and a through hole is provided on the left side of the bottom of the groove. One side of the handle is located in the groove and the other side is inserted into the through hole, and the optical axis is located in the through hole.

[0011] Furthermore, the bottom of the groove is provided with an arc-shaped groove, and part of the handle is suspended on the arc-shaped groove.

[0012] Furthermore, a counterweight is welded to the lower end of the hinge seat.

[0013] Furthermore, when the manhole cover is located on the first step, the upper surface of the manhole cover is flush with the upper surface of the manhole body, and the manhole cover is provided with multiple rows and columns of ventilation holes.

[0014] After adopting the above technical solution, the manhole cover is opened by the pivot and rotated to a vertical position, so that the manhole cover is located on the vertical groove. Since the hinge seat is movably set in the vertical groove, the manhole cover, hinge seat and pivot will move downward. Part of the manhole cover is inserted into the vertical groove and part of it stands upright above the manhole body, so that the manhole cover is in a stable and firm positioning state, preventing the manhole cover from being accidentally closed, making it safer to work. Multiple reflective strips are provided on the front and back of the manhole cover. After the manhole cover is erected, both sides have a warning function, allowing people or vehicles passing by to clearly identify that the manhole cover is in the open state, thereby greatly reducing the occurrence of safety accidents. Attached Figure Description

[0015] The present invention includes the following figures:

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a top view of the present invention;

[0018] Figure 3 for Figure 2 Sectional view along line AA (part of the structure is shown in dashed lines);

[0019] Figure 4 for Figure 3 A schematic diagram showing the structure of opening the manhole cover and inserting it into the vertical groove;

[0020] Figure 5 This is a schematic diagram of the linkage structure of the handle and locking block, as well as part of the well body and well cover in this utility model (section view of the well body and well cover, with the locking block inserted into the locking groove);

[0021] Figure 6 This is a schematic diagram of the linkage structure of the handle and locking block, as well as part of the well body and well cover in this utility model (section view of the well body and well cover, with the locking block detached from the locking groove).

[0022] Reference numerals: 1. Well body; 2. Well cover; 3. Ladder; 4. Rotary shaft; 5. First step; 6. Vertical groove; 7. Opening; 8. Connecting part; 9. Hinge seat; 10. Reflective strip; 11. Second step; 12. Handle; 13. Locking block; 14. Locking groove; 15. Optical axis; 16. Connecting rod; 17. Bolt; 18. Column; 19. Guide through hole; 20. Base; 21. Arc-shaped guide groove; 22. Groove; 23. Through hole; 24. Arc-shaped groove; 25. Counterweight; 26. Vent hole. Detailed Implementation

[0023] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0024] Referring to the above-mentioned figures, the present invention provides a municipal engineering inspection well including a well body 1 and a well cover 2. A ladder 3 is provided inside the well body 1. One side of the well cover 2 is connected to the well body 1 via a pivot 4. The well body 1 is characterized by having a first step 5 for placing the well cover 2, a vertical groove 6 on one side of the well body 1, and an opening 7 connecting the first step 5 and the vertical groove 6. The well cover 2 has a connecting portion 8 that passes through the opening 7 and extends into the vertical groove 6. A hinge seat 9 is movably provided within the vertical groove 6, and the hinge seat 9 is connected to the connecting portion 8 via the pivot 4. The manhole cover 2, after being opened via the pivot 4, can be inserted into the vertical groove 6. Multiple reflective strips 10 are provided on both the front and back of the manhole cover 2. The hinge seat 9 and the pivot 4 can move up and down within the vertical groove 6 as the manhole cover 2 moves. Second steps 11 are provided on both the front and rear sides of the vertical groove 6. When the manhole cover 2 is inserted into the vertical groove 6, the end faces of the manhole cover 2 on both the front and rear sides of the connecting part 8 abut against the second steps 11. A handle 12 is movably provided on the other side of the manhole cover 2 opposite to the connecting part 8, and a locking block 13 is movably provided at the lower end of the manhole cover 2. The inner wall of the manhole body 1 is provided with a locking groove 14 aligned with the locking block 13. The handle 12, through a linkage structure, can drive the locking block 13 to insert or disengage from the locking groove 14. The handle 12 is hinged to the manhole cover 2 via an optical shaft 15, and the handle 12 is L-shaped. The linkage structure includes a connecting rod 16, one end of which is hinged to the lower end of the handle 12, and the other end is hinged to the locking block 13. The lower end of the manhole cover 2 is detachably equipped with a column 18 via multiple bolts 17. The column 18 has a guide hole 19 for accommodating the left and right movement of the locking block 13. The lower end of the manhole cover 2 is detachably equipped with a base 20 via multiple bolts 17. The base 20 has an arc-shaped guide groove 21. The connecting rod 16 and the handle 12 are connected. A roller that can roll in an arc-shaped guide groove 21 is fitted on the hinged shaft. The upper end face of the manhole cover 2 is provided with a groove 22. A through hole 23 is provided on the left side of the bottom of the groove 22. One side of the handle 12 is located in the groove 22 and the other side is inserted into the through hole 23. The optical shaft 15 is located in the through hole 23. An arc-shaped groove 24 is provided at the bottom of the groove 22. Part of the handle 12 is suspended on the arc-shaped groove 24. A counterweight block 25 is welded to the lower end of the hinge seat 9. When the manhole cover 2 is located on the first step 5, the upper end face of the manhole cover 2 is flush with the upper end face of the manhole body 1, and the manhole cover 2 is provided with multiple rows and columns of ventilation holes 26.

[0025] In this embodiment, after the manhole cover 2 is opened by the pivot 4 and rotated to a vertical position, the manhole cover 2 is positioned on the vertical groove 6. Since the hinge seat 9 is movably disposed within the vertical groove 6, the manhole cover 2, the hinge seat 9, and the pivot 4 will move downwards. Part of the manhole cover 2 is inserted into the vertical groove 6, and part of it stands upright above the manhole body 1, ensuring that the manhole cover 2 is in a stable and secure positioning state, preventing the manhole cover 2 from being accidentally closed, thus making it safer during operation. Multiple reflective strips 10 are provided on both the front and back of the manhole cover 2, providing a warning function on both sides after the manhole cover 2 is erected, allowing passing people or vehicles to clearly identify that the manhole cover 2 is in the open state, thereby greatly reducing the occurrence of safety accidents; the manhole cover 2 is inserted... After entering the vertical groove 6, the end faces of the manhole cover 2 on both sides of the connecting part 8 abut against the second step 11, so that the stress point is on the manhole cover 2, avoiding stress on the hinge seat 9 and the rotating shaft 4, and increasing the service life of the hinge seat 9 and the rotating shaft 4; the through hole 23 provides the handle 12 with rotation space, and part of the handle 12 is suspended on the arc groove 24 at the bottom of the groove 22, making it easy for workers to lift the handle 12 by hand or tool; the counterweight 25 increases the weight of the hinge seat 9, making the movable hinge seat 9 structure more stable; when the manhole cover 2 is located on the first step 5, the upper end face of the manhole cover 2 is flush with the upper end face of the manhole body 1, which does not affect the normal passage of the road, and the vent hole 26 is used for the ventilation of the manhole body 1.

[0026] Reference Figure 5 and Figure 6 As shown, when it is necessary to open the manhole cover 2, the worker inserts their hand or tool into the arc-shaped groove 24 and pulls the handle 12 upward, causing the handle 12 to rotate counterclockwise. The counterclockwise rotation of the handle 12 causes the connecting rod 16 to swing, and the connecting rod 16 causes the locking block 13 to move to the right on the guide through hole 19, so that the locking block 13 disengages from the locking groove 14, completing the unlocking of the manhole cover 2. At this time, the manhole cover 2 can be opened by using the handle 12. After closing the manhole cover 2, press the other side of the handle 12 away from the optical axis 15, causing the handle 12 to rotate clockwise, causing the connecting rod 16 to reset, and the locking block... 13 is inserted into the locking groove 14 to lock the manhole cover 2; making the manhole structure safer and preventing misoperation. The setting of the column 18 and the guide through hole 19 plays a guiding role in the left and right movement of the locking block 13. The setting of the base 20, the guide groove and the roller makes the connecting rod 16 have a guiding and positioning role during the swinging process, while dispersing the force applied to the optical axis 15 by the handle 12, making the structure more stable and the service life longer. The column 18 and the base 20 are detachably connected to the bottom of the manhole cover 2 by multiple bolts 17, which facilitates assembly and later maintenance.

Claims

1. A manhole for municipal engineering, comprising a manhole body and a manhole cover, wherein a ladder is provided inside the manhole body, and one side of the manhole cover is connected to the manhole body via a pivot, characterized in that: The well body has a first step for placing the well cover. A vertical groove is provided on one side of the well body, and the well body has an opening connecting the first step and the vertical groove. The well cover has a connecting part that passes through the opening and extends into the vertical groove. A hinge seat is movably provided in the vertical groove. The hinge seat and the connecting part are connected by the rotating shaft. After the well cover is opened by the rotating shaft, it can be inserted into the vertical groove. Multiple reflective strips are provided on the front and back of the well cover. The hinge seat and the rotating shaft can move up and down in the vertical groove as the well cover moves.

2. The inspection well of claim 1, wherein: The vertical groove has a second step on both the front and rear sides. When the manhole cover is inserted into the vertical groove, the end faces of the manhole cover on both the front and rear sides of the connecting part abut against the second step.

3. A manhole for municipal engineering as described in claim 1 or 2, characterized in that: A handle is movably provided on the other side of the opposite connection part of the manhole cover, and a locking block is movably provided at the lower end of the manhole cover. The inner wall of the manhole is provided with a locking groove that aligns with the locking block. The handle can drive the locking block to insert into or disengage from the locking groove through a linkage structure.

4. The inspection chamber according to claim 3, wherein: The handle is hinged to the manhole cover via an optical axis and is L-shaped. The linkage structure includes a connecting rod, one end of which is hinged to the lower end of the handle and the other end of which is hinged to the locking block. The lower end of the manhole cover is detachably provided with a column by multiple bolts. The column is provided with a guide through hole for the locking block to move left and right.

5. A manhole according to claim 4, characterized in that: The bottom of the manhole cover is detachably equipped with a base by multiple bolts. The base is provided with an arc-shaped guide groove. A roller that can roll in the arc-shaped guide groove is sleeved on the shaft where the connecting rod is hinged to the handle.

6. A manhole according to claim 4 or 5, characterised in that: The upper surface of the manhole cover is provided with a groove, and a through hole is provided on the left side of the bottom of the groove. One side of the handle is located in the groove and the other side is inserted into the through hole. The optical axis is located in the through hole.

7. A manhole according to claim 6, characterized in that: The bottom of the groove is provided with an arc-shaped groove, and part of the handle is suspended on the arc-shaped groove.

8. A manhole for municipal engineering as described in claim 1 or 2, characterized in that: A counterweight is welded to the lower end of the hinge seat.

9. The inspection chamber according to claim 1, wherein: When the manhole cover is located on the first step, the upper surface of the manhole cover is flush with the upper surface of the manhole body, and the manhole cover is provided with multiple rows and columns of ventilation holes.

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