Sealing and locking complete well lid

Abstract

The utility model discloses a sealed locking complete well lid, which relates to the technical field of road administration well lids, and comprises a lid body and a well seat, the well seat is provided with a well mouth, the inner side of the well mouth is provided with a circle of flange, and a lid groove for the lid body to cover is formed above the flange; a counterbore is formed in the cover body, a mounting groove is formed in the position, corresponding to the counterbore, of the flange, a locking column is detachably connected into the mounting groove, and a threaded hole is formed in the locking column; and the cover body is provided with a locking bolt which is matched with the counterbore and can be downwards in threaded connection with the threaded hole. A bolt hole carrier which is easy to damage, deform or crack on the well lid is replaced by the locking column from the well seat, the locking column is detachably connected to the well seat, when the threaded hole is damaged, only the locking column and a matched bolt need to be detached and replaced, complex repairing work or whole well seat replacement is not needed, convenience and rapidness are achieved, and the maintenance cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of road manhole covers, and in particular to a sealed and locked manhole cover set. Background Art

[0002] Manhole covers are the top closures of deep wells on roads or in homes, used to prevent people or objects from falling and as entrances and exits to underground facilities. Manhole covers are an important part of infrastructure, and they are required wherever public facilities such as tap water, telecommunications, electricity, gas, heat, fire protection, and sanitation are installed. With the development of the economy, the upgrading of infrastructure construction has also driven the development of manhole cover technology.

[0003] Existing manhole covers usually include a manhole seat and a cover body. The manhole seat is fixed to the ground or a supporting structure, and the cover body is movable to cover the opening on the manhole seat. The manhole cover used in gas stations is also equipped with a sealing ring at the wellhead. After the cover body is covered on the manhole seat, it presses the sealing ring, and the four corners of the cover body are pressed against the manhole seat by bolts to achieve the effect of locking and sealing.

[0004] However, gas stations serve not only small private cars, but also large trucks. After long-term and frequent heavy vehicle rolling over, although the cover and the manhole seat have been designed to be thick and strong, the structure of the bolts and threaded holes will still be deformed or cracked, affecting the use of the manhole cover, especially the cracking of the threaded holes on the manhole seat or the damage of the threads, which greatly reduces the service life of the manhole cover as a whole. The only solution is to replace the manhole seat, which is costly. Utility Model Content

[0005] In order to solve the technical problem of high replacement cost after the bolt connection of the well seat is damaged, the present application provides a sealed and locked set of manhole covers.

[0006] The sealed and locked manhole cover provided in this application adopts the following technical solution:

[0007] A sealing and locking manhole cover comprises a cover body and a manhole seat, wherein the manhole seat is provided with a manhole opening, a circle of ribs are provided on the inner side of the manhole opening, and a cover groove for the cover body to cover is formed above the ribs; a countersunk hole is provided on the cover body, and an installation groove is provided on the ribs at a position corresponding to the countersunk hole, a locking column is detachably connected in the installation groove, and a threaded hole is provided on the locking column; the cover body is provided with a locking bolt which cooperates with the countersunk hole and can be threadedly connected to the threaded hole downward.

[0008] By adopting the above technical solution, the bolt hole carrier on the manhole cover that is easily damaged, deformed or cracked is replaced from the manhole seat with a locking column, and the locking column is detachably connected to the manhole seat. When the threaded hole is damaged, it is only necessary to remove and replace the locking column and the matching bolt. There is no need to carry out complicated repair work or replace the entire manhole seat. It is convenient and fast and reduces maintenance costs.

[0009] Optionally, the mounting groove is a cylindrical groove; a limiting groove is provided on the inner wall of the mounting groove, the limiting groove includes a vertical section and a horizontal section, the vertical section is arranged to penetrate upward, and the horizontal section extends horizontally from the bottom of the vertical section to one side; a limiting block is provided on the outer wall of the locking column, which can enter the vertical section and the horizontal section in turn.

[0010] By adopting the above technical solution, when the locking column is placed in the installation groove, it is first inserted downward and then rotated horizontally, so that the limit block enters the vertical section and the horizontal section in turn, and finally the limit block located in the horizontal section restricts the locking column in the vertical direction, so that the locking column cannot be vertically removed from the installation groove; when the locking column needs to be replaced, it can be moved in the opposite direction.

[0011] Optionally, a chamfer is provided on one side of the limit block facing the horizontal section.

[0012] The adoption of the above technical solution helps the limit block to move from the vertical section to the horizontal section.

[0013] Optionally, a removable limit pin is provided in the vertical section, and the lower end of the limit pin seals the opening of the horizontal section.

[0014] By adopting the above technical solution, the limit block is limited in the horizontal section by the limit pin, so as to prevent the limit block from entering the vertical section under the action of vibration or other external force, causing the locking column to jump upward with the cover body.

[0015] Optionally, a hook portion is provided at the upper end of the limit pin.

[0016] By adopting the above technical solution, the hook portion is used to facilitate the operator to pull out the limit pin.

[0017] Optionally, a pull ring is hinged on the upper end of the locking column; the pull ring can be flipped to a flat state flush with the upper end surface of the locking column, and at this time the threaded hole is located in the middle of the pull ring.

[0018] By adopting the above technical solution, the pull ring can be used to operate the movement of the locking column, and the four pull rings can be used together to hoist the well seat, and can also be used to tie a safety rope or a lifting rope.

[0019] Optionally, the height of the upper end surface of the locking column is lower than the opening height of the mounting groove, and the pull ring in a flat state is located inside the opening of the mounting groove.

[0020] By adopting the above technical solution, the pull ring will not affect the closing of the upper cover body on the baffle.

[0021] Optionally, an operating notch is provided on one side of the mounting groove, and the movable end of the pull ring in a flat state is close to the operating notch.

[0022] By adopting the technical solution, it is convenient for an operator to use fingers to turn over the pull ring in a flat state for use.

[0023] Optionally, a sleeve is provided on the retaining edge in the form of an insert, the upper end surface of the sleeve is flush with the retaining edge, and the mounting groove is provided at the upper end of the sleeve.

[0024] By adopting the above technical solution, the connection strength between the sleeve and the locking column is further enhanced.

[0025] Optionally, a plurality of convex strips are evenly arranged on the outer side of the sleeve along the circumferential direction, and the convex strips are arranged in two groups, upper and lower.

[0026] By adopting the above technical solution, the stability of the sleeve in the well seat is enhanced.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The bolt hole carrier on the manhole cover that is easily damaged, deformed or cracked is replaced from the manhole seat to the locking column, and the locking column is detachably connected to the manhole seat. When the threaded hole is damaged, only the locking column and the matching bolt need to be disassembled and replaced, without the need for complicated repair work or replacement of the entire manhole seat. It is convenient and fast and reduces maintenance costs;

[0029] 2. A pull ring is added to the upper end of the locking column. The pull ring can be used to operate the movement of the locking column, or the four pull rings can be used together to lift the well seat, or they can be used to tie a safety rope or a lifting rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0031] Figure 2 yes Figure 1 A is an enlarged schematic diagram.

[0032] Figure 3 It is a schematic diagram of the exploded structure of the sleeve and the locking column in the embodiment of the present application.

[0033] Description of reference numerals:

[0034] 1. Cover body; 11. Countersunk hole; 2. Well seat; 21. Retaining edge; 211. Embedded groove; 22. Wellhead; 23. Sealing ring; 3. Sleeve; 31. Mounting groove; 32. Limiting groove; 321. Vertical section; 322. Horizontal section; 33. Limiting pin; 331. Hook; 34. Raised strip; 4. Locking column; 41. Threaded hole; 42. Limiting block; 421. Chamfer; 43. Pull ring; 5. Locking bolt. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-3 This application is described in further detail.

[0036] The present application embodiment discloses a sealed and locked manhole cover. Figure 1 , Figure 2 The sealing and locking manhole cover comprises a rectangular cover body 1 and a manhole seat 2. The manhole seat 2 is pre-buried in the ground for fixation. A manhole head 22 is arranged on the manhole seat 2. A circle of retaining edges 21 are integrally formed on the inner side of the manhole head 22. A cover groove is formed above the retaining edges 21. The cover body 1 is placed flat on the cover groove to achieve a stable covering effect by its own weight. A circle of embedded grooves 211 are provided on the inner side of the upper end surface of the retaining edges 21. A mushroom-shaped sealing ring 23 is embedded in the embedded groove 211. When the cover body 1 is covered on the retaining edges 21, the sealing ring 23 is squeezed to seal the manhole head 22. Countersunk holes 11 are die-cast at the four corners of the cover body 1. Locking bolts 5 are arranged in the countersunk holes 11.

[0037] Reference Figure 2 , Figure 3 The position of the countersunk hole 11 on the retaining edge 21 is fixed with a sleeve 3 made of alloy material by means of an insert. A plurality of convex strips 34 are evenly arranged on the outer side of the sleeve 3 along the circumferential direction, and the convex strips 34 are arranged in two groups, upper and lower, for enhancing the stability of the sleeve 3 in the well seat 2. The upper end surface of the sleeve 3 is flush with the retaining edge 21, and a cylindrical mounting groove 31 is provided in the middle position. A locking column 4 is detachably connected in the mounting groove 31, and a threaded hole 41 is provided on the locking column 4 for threaded cooperation with the locking bolt 5. The cover 1 and the well seat 2 are fixed by the locking column 4 and the locking bolt 5. When the structure of the connection is damaged, only the locking column 4 and the matching bolt need to be disassembled and replaced, without the need for complicated repair work or replacement of the well seat 2 as a whole, which is convenient and fast and reduces maintenance costs.

[0038] Reference Figure 2 , Figure 3An L-shaped limit groove 32 is provided on the inner wall of the installation groove 31. The limit groove 32 includes a vertical section 321 and a horizontal section 322. The vertical section 321 is arranged to penetrate upward, and the horizontal section 322 extends horizontally from the bottom of the vertical section 321 to one side. A limit block 42 capable of sliding in the vertical section 321 and the horizontal section 322 is integrally formed on the outer wall of the locking column 4. The width of the limit block 42 is consistent with the width of the horizontal section 322, and a chamfer 421 for guiding is formed on the side of the limit block 42 facing the horizontal section 322. When installing the locking column 4, the locking column 4 is first inserted downward and then rotated horizontally, so that the limit block 42 enters the vertical section 321 and the horizontal section 322 in turn, and finally the limit block 42 located in the horizontal section 322 realizes the vertical direction restriction of the locking column 4. Then, a limit pin 33 is inserted into the vertical section 321 , and the lower end of the limit pin 33 seals the opening of the horizontal section 322 , thereby restricting the limit block 42 in the horizontal section 322 , making the locking column 4 unable to rotate, thereby completing the fixed connection between the locking column 4 and the sleeve 3 .

[0039] Reference Figure 3 The upper end of the limit pin 33 is formed into a hook portion 331 by slotting on the side wall. The hook portion 331 is used to facilitate the operator to pull out the limit pin 33, and then move it in the opposite direction to replace the locking column 4.

[0040] Reference Figure 2 , Figure 3 When the locking column 4 is fixed in the mounting groove 31, the height of its upper end surface is lower than the opening height of the mounting groove 31; a pull ring 43 is hinged at the upper end of the locking column 4, and the hinged position of the pull ring 43 is located on one side of the threaded hole 41. The pull ring 43 can be flipped to a flat state flush with the upper end surface of the locking column 4, and the threaded hole 41 is located in the middle of the pull ring 43. The pull ring 43 in the flat state also does not exceed the opening height of the mounting groove 31, so as to avoid affecting the upper cover 1 covering the baffle. The pull ring 43 can be used to operate the movement of the locking column 4, or four pull rings 43 can be used together to hoist the well seat 2, or they can be used to tie a safety rope or a lifting rope. An operating notch is provided on the side of the mounting groove 31 away from the hinged part of the pull ring 43, so that the operator can use his fingers to flip up the pull ring 43 in the flat state for use.

[0041] The implementation principle of a sealed and locked manhole cover set in the embodiment of the present application is:

[0042] When the manhole cover is to be closed and sealed, the cover body 1 is first placed on the manhole seat 2, the cover body 1 presses the sealing ring 23 downward, and then the four locking bolts 5 are respectively threaded downward from the countersunk holes 11 to the locking columns 4, and finally tightened to complete the operation.

[0043] When the damaged locking column 4 is to be replaced, the locking bolt 5 is first unscrewed and the cover 1 is opened, and then the limiting pin 33 is taken out by a tool or a finger, and then the pull ring 43 is turned up to rotate the locking column 4, so that the limiting block 42 moves from the horizontal section 322 to the vertical section 321, and then the locking column 4 is pulled out, and finally a new locking column 4 is replaced according to the above operation. There is no need to perform complicated repair work or replace the entire well seat 2, which is convenient and fast and reduces maintenance costs.

[0044] When the manhole cover needs to be opened and closed frequently, the four limit pins 33 can be pulled out. At this time, turning the locking bolt 5 will directly drive the locking column 4 to rotate. The four locking columns 4 are rotated until the limit blocks 42 are located in the vertical section 321. The cover body 1 can be directly lifted upward to open the manhole cover, and the locking column 4 will come out together with the cover body 1, which is convenient and quick to operate.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sealed and locked manhole cover, comprising a cover body (1) and a manhole seat (2), wherein the manhole seat (2) is provided with a manhole opening (22), a rib (21) is provided inside the manhole opening (22), and a cover groove for the cover body (1) to cover is formed above the rib (21); characterized in that: The cover body (1) is provided with a countersunk hole (11); a mounting groove (31) is provided on the retaining edge (21) at a position corresponding to the countersunk hole (11); a locking column (4) is detachably connected in the mounting groove (31); and a threaded hole (41) is provided on the locking column (4); and a locking bolt (5) is provided on the cover body (1) and is matched with the countersunk hole (11) and can be threadedly connected downwardly to the threaded hole (41).

2. The sealing and locking manhole cover according to claim 1, characterized in that: The installation groove (31) is a cylindrical groove; a limiting groove (32) is arranged on the inner wall of the installation groove (31), and the limiting groove (32) comprises a vertical section (321) and a horizontal section (322); the vertical section (321) is arranged to penetrate upward, and the horizontal section (322) extends horizontally from the bottom of the vertical section (321) to one side; and a limiting block (42) capable of entering the vertical section (321) and the horizontal section (322) in sequence is arranged on the outer wall of the locking column (4).

3. The sealing and locking manhole cover according to claim 2, characterized in that: The limiting block (42) is provided with a chamfer (421) on one side facing the horizontal section (322).

4. The sealing and locking manhole cover according to claim 2, characterized in that: A removable limiting pin (33) is arranged in the vertical section (321), and the lower end of the limiting pin (33) seals the opening of the horizontal section (322).

5. The sealing and locking manhole cover set according to claim 4, characterized in that: The upper end of the limiting pin (33) is provided with a hook portion (331).

6. The sealing and locking manhole cover set according to claim 2, characterized in that: The upper end of the locking column (4) is hinged with a pull ring (43); the pull ring (43) can be turned over to a flat state flush with the upper end surface of the locking column (4), and at this time the threaded hole (41) is located in the middle of the pull ring (43).

7. The sealing and locking manhole cover set according to claim 6, characterized in that: The height of the upper end surface of the locking column (4) is lower than the opening height of the mounting groove (31), and the pull ring (43) in a flat state is located inside the opening of the mounting groove (31).

8. The sealing and locking manhole cover set according to claim 7, characterized in that: An operating notch is provided on one side of the installation groove (31), and the movable end of the pull ring (43) in a flat state is close to the side of the operating notch.

9. The sealing and locking manhole cover set according to claim 1, characterized in that: A sleeve (3) is provided on the retaining edge (21) in the form of an insert, the upper end surface of the sleeve (3) is flush with the retaining edge (21), and the mounting groove (31) is provided at the upper end of the sleeve (3).

10. The sealing and locking manhole cover set according to claim 9, characterized in that: A plurality of convex strips (34) are evenly arranged on the outer side of the sleeve (3) along the circumferential direction, and the convex strips (34) are arranged in two groups, upper and lower.

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