A manhole cover and manhole

Abstract

The application relates to a well lid and an inspection well, wherein the well lid comprises a well lid frame and a well lid body, a first hinged end is arranged on the well lid frame, a second hinged end is arranged on the well lid body, the first hinged end is a spherical hinged end or a spherical hinged cavity, the second hinged end is a spherical hinged cavity or a spherical hinged end, and the spherical hinged end is hinged in the spherical hinged cavity. The spherical hinged end of the application is hinged with the spherical hinged cavity, allows the well lid body to have slight rotation in multiple directions, can better adapt to uneven settlement of a road surface or dynamic load when a vehicle is rolled, reduces local stress concentration, avoids the single-point fracture problem of bolt hinging, and further improves the service life of the well lid and the inspection well.

Description

Technical Field

[0001] This application relates to the field of inspection well technology, and in particular to a manhole cover and an inspection well. Background Technology

[0002] Urban sewage needs to be transported to sewage treatment plants through sewage pipelines. After treatment at these plants, the sewage is either discharged or reused. During the sewage transport process, the pipelines need to be cleaned and inspected to prevent blockages. To facilitate cleaning and inspection by staff, inspection wells are often installed above the pipelines, with covers covering them. Staff can open the covers to perform cleaning and inspection as needed.

[0003] Manhole covers consist of a frame and a body. The body and frame are bolted together, allowing the body to rotate and open. However, due to the regular opening and closing cycles and the corrosive effects of sewage, the bolted connection between the cover and frame frequently fails. Because this connection is embedded in building materials like cement, the entire manhole cover is typically replaced, resulting in a short lifespan for both the cover and the manhole. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides a manhole cover and inspection well that can improve their service life.

[0005] On one hand, this application provides a manhole cover, including a manhole cover frame and a manhole cover body. The manhole cover frame is provided with a first hinge end, and the manhole cover body is provided with a second hinge end. The first hinge end is a spherical hinge end or a spherical hinge cavity, and the second hinge end is a spherical hinge cavity or a spherical hinge end. The spherical hinge end is hinged in the spherical hinge cavity.

[0006] In one embodiment of this application, the manhole cover frame includes a manhole base, a frame body, a hinge seat, and a hinge cover. The frame body and the hinge seat are both disposed on the manhole base, and the hinge cover is disposed on the hinge seat. The first hinge end is disposed on the hinge seat and the hinge cover.

[0007] In one embodiment of this application, the hinge cover is provided with a first connecting portion, and the hinge seat is provided with a second connecting portion, wherein the first connecting portion is connected to the second connecting portion.

[0008] In one embodiment of this application, the first hinge end is a spherical hinge cavity, the hinge seat is provided with a first hinge cavity, and the hinge cover is provided with a second hinge cavity, the first hinge cavity and the second hinge cavity forming the spherical hinge cavity.

[0009] In one embodiment of this application, the second hinge end is a spherical hinge end, the manhole cover body includes a manhole cover body and a hinge rod, the hinge rod is disposed on the manhole cover body, and the second hinge end is disposed on the hinge rod at one end away from the manhole cover body.

[0010] In one embodiment of this application, the frame body is provided with a first clearance groove, the hinge cover is provided with a second clearance groove, the first clearance groove, the second clearance groove and the spherical hinge cavity are connected in sequence, and the hinge rod is rotatably disposed in the first clearance groove and the second clearance groove.

[0011] In one embodiment of this application, the frame body is provided with a through cavity running from top to bottom, and the manhole cover body is rotated to the inside or outside of the through cavity.

[0012] In one embodiment of this application, a first limiting part is provided on the frame body, a second limiting part is provided on the hinged cover, and the manhole cover body is rotatably disposed between the first limiting part and the second limiting part.

[0013] In one embodiment of this application, the first limiting part includes a first limiting surface and a second limiting surface. A limiting boss is provided in the through cavity. The top surface of the limiting boss forms the first limiting surface. The first limiting surface is in contact with the manhole cover body. The bottom of the first clearance groove forms the second limiting surface. The second limiting surface is in contact with the hinge rod.

[0014] On the other hand, a manhole is provided, including the manhole cover.

[0015] The technical solution described in this application has the following advantages over the prior art:

[0016] The manhole cover body and frame of this application have a spherical hinge end on one side and a spherical hinge cavity on the other side. The spherical hinge end and the spherical hinge cavity are hinged together, allowing the manhole cover to rotate slightly in multiple directions (such as tilting or swinging). This can better adapt to the dynamic load of uneven road settlement or vehicle rolling, reduce local stress concentration, avoid the single-point fracture problem of bolted hinges, and thus improve the service life of the manhole cover and inspection well. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1This is an exploded view of the manhole cover in this application;

[0019] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle;

[0020] Figure 3 This is a structural schematic diagram of the hinged cover of the manhole cover of this application;

[0021] Figure 4 This is a cross-sectional view of the manhole cover in this application;

[0022] Figure 5 yes Figure 4 A magnified view of a portion of point B in the middle;

[0023] Figure 6 This is a top view of the manhole cover frame of the manhole cover in this application;

[0024] Figure 7 This is a structural schematic diagram of the main body of the manhole cover of this application;

[0025] Figure 8 This is a first structural schematic diagram of the irregular holes and irregular blocks of the manhole cover of this application;

[0026] Figure 9 This is a second structural schematic diagram of the irregular holes and irregular blocks of the manhole cover of this application.

[0027] Explanation of reference numerals in the instruction manual:

[0028] 1. Manhole cover frame; 2. Manhole cover body; 3. First hinge end; 4. Second hinge end; 5. Manhole base; 6. Frame body; 7. Hinge seat; 8. Hinge cover; 9. First hinge cavity; 10. Second hinge cavity; 11. Manhole cover body; 12. Hinge rod; 13. First clearance groove; 14. Second clearance groove; 15. Through cavity; 16. First limiting part; 17. Second limiting part; 18. First limiting surface; 19. 20. Limiting surface; 21. Diagonal tie beam; 22. Anti-slip rib; 23. Opening hole; 24. Reinforcing member; 25. First reinforcing inner ring; 26. Second reinforcing inner ring; 27. Reinforcing outer ring; 28. First support beam; 29. ​​Second support beam; 30. Buffer member; 31. Irregular block; 32. Irregular hole; 33. First connecting part; 34. Second connecting part; 35. Long strip hole; 36. Fixing seat. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] Example 1

[0031] Reference Figures 1-9 As shown, the manhole cover of this application includes a manhole cover frame 1 and a manhole cover body 2. The manhole cover frame 1 is provided with a first hinge end 3, and the manhole cover body 2 is provided with a second hinge end 4. The first hinge end 3 is a spherical hinge end or a spherical hinge cavity, and the second hinge end 4 is a spherical hinge cavity or a spherical hinge end. The spherical hinge end is hinged in the spherical hinge cavity.

[0032] The manhole cover of this application includes a manhole cover frame 1 and a manhole cover body 2. The manhole cover frame 1 and the manhole cover body 2 are connected by a spherical hinge to improve the lifespan of the manhole cover. Specifically, as shown... Figure 1 and Figure 2 As shown, the manhole cover frame 1 is provided with a first hinge end 3, and the manhole cover body 2 is provided with a second hinge end 4. The first hinge end 3 and the second hinge end 4 are connected by a spherical hinge. Further, the first hinge end 3 is a spherical hinge end, and the second hinge end 4 is a spherical hinge cavity; or the first hinge end 3 is a spherical hinge cavity, and the second hinge end 4 is a spherical hinge end; preferably, the first hinge end 3 is a spherical hinge cavity, and the second hinge end 4 is a spherical hinge end, that is, the manhole cover body 2 has a spherical hinge end, and the manhole cover frame 1 has a spherical hinge cavity. The spherical hinge allows the manhole cover body 2 to rotate slightly in multiple directions, such as tilting or swaying, which can better adapt to uneven road surface settlement or dynamic loads under vehicle pressure, reduce local stress concentration, avoid the single-point fracture problem of bolted hinges, and thus improve the service life of the manhole cover. The diameter of the spherical hinge end is 2mm-4mm smaller than the diameter of the spherical hinge cavity to ensure that the spherical hinge end and the spherical hinge cavity can be hinged normally, and that the spherical hinge end will not detach from the spherical hinge cavity.

[0033] In one embodiment, the manhole cover frame 1 includes a manhole base 5, a frame body 6, a hinge seat 7, and a hinge cover 8. The frame body 6 and the hinge seat 7 are both disposed on the manhole base 5, and the hinge cover 8 is disposed on the hinge seat 7. The first hinge end 3 is disposed on the hinge seat 7 and the hinge cover 8.

[0034] The first hinge end 3 of this application is disposed on the manhole cover frame 1. Specifically, as shown... Figure 1As shown, the manhole cover frame 1 of this application includes a manhole base 5, a frame body 6, a hinge seat 7, and a hinge cover 8. The manhole base 5 is plate-shaped and annular, while the frame body 6 is column-shaped and annular. The manhole base 5 serves as the base for the frame body 6, and the frame body 6 is mounted on the manhole base 5, with both coaxially arranged. Furthermore, the hinge seat 7 is mounted on the manhole base 5, and the hinge cover 8 is mounted on the hinge seat 7. Both the hinge cover 8 and the hinge seat 7 are located on the outer side of the frame body 6, and the hinge seat 7 and the hinge cover 8 are connected to form a single unit. A first hinge end 3 is mounted on the hinge seat 7 and the hinge cover 8 to enable rotational movement of the manhole cover body 2 relative to the manhole cover frame 1. The frame body 6 is connected to the outer edge of the manhole cover frame 1 via a diagonal tie beam 21 to improve connection stability. The manhole base 5 has multiple elongated holes 35 to ensure air venting during cement pouring to fix the manhole base 5, allowing the manhole base 5 and cement to adhere fully, achieving an anti-displacement design and ensuring a more secure fixation of the manhole base 5.

[0035] In one embodiment, the hinge cover 8 is provided with a first connecting part 33, and the hinge seat 7 is provided with a second connecting part 34, wherein the first connecting part 33 is connected to the second connecting part 34.

[0036] This application achieves the connection between the hinge cover 8 and the hinge seat 7 through the first connecting part 33 and the second connecting part 34. Specifically, as shown... Figure 2 and Figure 3 As shown, the hinge cover 8 is provided with a first connecting part 33, which is a connecting post. The hinge seat 7 is provided with a second connecting part 34, which is a connecting groove. The connecting post is inserted into the connecting groove to connect the hinge seat 7 and the hinge cover 8. After the first connecting part 33 and the second connecting part 34 are connected, the hinge cover 8 is welded to the hinge seat 7. That is, the positioning of the hinge seat 7 and the hinge cover 8 is achieved by the cooperation of the first connecting part 33 and the second connecting part 34, and the stable connection between the hinge seat 7 and the hinge cover 8 is achieved by welding. Alternatively, the first connecting part 33 is a connecting hole, and the second connecting part 34 is a threaded groove. Fasteners pass through the connecting hole and cooperate with the threaded groove to connect the hinge cover 8 and the hinge seat 7.

[0037] In one embodiment, the first hinge end 3 is a spherical hinge cavity, the hinge seat 7 is provided with a first hinge cavity 9, and the hinge cover 8 is provided with a second hinge cavity 10. The first hinge cavity 9 and the second hinge cavity 10 form the spherical hinge cavity.

[0038] The first hinge end 3 of this application is a spherical hinge cavity. Specifically, to facilitate the assembly of the spherical hinge cavity on the manhole cover frame 1 with the spherical hinge end on the manhole cover body 2, as follows: Figure 2As shown, the spherical hinge cavity on the manhole cover frame 1 is formed by the relative connection of the first hinge cavity 9 and the second hinge cavity 10. Further, the hinge seat 7 is provided with the first hinge cavity 9, which is hemispherical, and the hinge cover 8 is provided with the second hinge cavity 10, which is also hemispherical. When the hinge cover 8 is installed on the hinge seat 7, the first hinge cavity 9 and the second hinge cavity 10 are relative to each other to form a spherical hinge cavity. When it is necessary to install the manhole cover body 2 onto the manhole cover frame 1, the spherical hinge end on the manhole cover body 2 is placed in the first hinge cavity 9 on the hinge seat 7, and then the hinge cover 8 is placed on the hinge seat 7. The second hinge cavity 10 on the hinge cover 8 and the first hinge cavity 9 on the hinge seat 7 are relative to each other to form a spherical hinge cavity, thereby achieving the hinge connection between the manhole cover frame 1 and the manhole cover body 2.

[0039] In one embodiment, the second hinge end 4 is a spherical hinge end, and the manhole cover body 2 includes a manhole cover body 11 and a hinge rod 12. The hinge rod 12 is disposed on the manhole cover body 11, and the second hinge end 4 is disposed on the end of the hinge rod 12 away from the manhole cover body 11.

[0040] The second hinge end 4 of this application is a spherical hinge end. For example... Figure 1 As shown, the manhole cover body 2 of this application includes a manhole cover body 11 and a hinge rod 12. The manhole cover body 11, the hinge rod 12, and the second hinge end 4 are connected in sequence. That is, one end of the hinge rod 12 is connected to the outer edge of the circumference of the manhole cover body 11, and the other end of the hinge rod 12 is connected to a spherical hinge end, so as to form a spherical hinge mechanism through the spherical hinge end at the end of the hinge rod 12 and the spherical hinge cavity on the manhole cover frame 1. Preferably, the manhole cover body 11, the hinge rod 12, and the spherical hinge end are integrally formed to further improve the service life of the spherical hinge mechanism, thereby improving the service life of the manhole cover body 2. The manhole cover body 11 is provided with anti-slip ribs 22, which protrude upward from the top surface of the manhole cover body 11. The anti-slip ribs 22 can be rectangular or T-shaped, etc. The manhole cover body 11 is also provided with an opening hole 23, which allows workers to open the manhole cover body 2 for cleaning and inspection. In addition, the opening hole 23 also serves as a vent to prevent gas accumulation inside the inspection well and avoid other potential hazards. To improve the load-bearing capacity of the manhole cover body 11, a reinforcing member 24 is provided at the bottom of the manhole cover body 11, such as... Figure 7As shown, the reinforcing member 24 includes a first reinforcing inner ring 25, a second reinforcing inner ring 26, a reinforcing outer ring 27, a first support beam 28, and a second support beam 29. The first reinforcing outer ring 27 is disposed around the perimeter of the manhole cover body 11. The second reinforcing inner ring 26 is located inside the reinforcing outer ring 27, and the first reinforcing inner ring 25 is located inside the second reinforcing inner ring 26. The first reinforcing inner ring 25, the second reinforcing inner ring 26, and the reinforcing outer ring 27 are coaxially arranged. The first support beam 28 is disposed between the first reinforcing inner ring 25 and the second reinforcing inner ring 26, and the second support beam 29 is disposed between the second reinforcing inner ring 26 and the reinforcing outer ring 27.

[0041] In one embodiment, the frame body 6 is provided with a first clearance groove 13, the hinge cover 8 is provided with a second clearance groove 14, the first clearance groove 13, the second clearance groove 14 and the spherical hinge cavity are connected in sequence, and the hinge rod 12 is rotatably disposed in the first clearance groove 13 and the second clearance groove 14.

[0042] This application avoids the rotational movement of the manhole cover relative to the manhole cover frame 1 through an avoidance groove. Specifically, the spherical hinge end on the manhole cover body 2 rotates within the spherical hinge cavity on the manhole cover frame 1, thereby achieving rotation between the manhole cover body 2 and the manhole cover frame 1. Simultaneously, as... Figure 2 As shown, a first clearance groove 13 is provided on the frame body 6, allowing the hinge rod 12 to rotate within it. A second clearance groove 14 is provided on the hinge cover 8, allowing the hinge rod 12 to rotate within it. The first clearance groove 13 and the second clearance groove 14 are connected, thus enabling the hinge rod 12 to rotate within them, allowing the manhole cover body 11 to rotate relative to the supporting frame. Furthermore, the second clearance groove 14 is connected to the spherical hinge cavity, allowing the hinge rod 12 to rotate within the first and second clearance grooves 13 and 14 when the spherical hinge end rotates within the cavity. Simultaneously, the sidewalls of the first and second clearance grooves 13 and 14 limit the hinge rod 12, confining it within these grooves and preventing the manhole cover body 11 from wobbling during rotation.

[0043] In one embodiment, the frame body 6 is provided with a through cavity 15 extending from top to bottom, and the manhole cover body 11 rotates to the inside or outside of the through cavity 15.

[0044] In this application, the manhole cover body 11 is rotatably configured relative to the manhole cover frame 1. Specifically, as shown... Figure 1As shown, a through cavity 15 is provided on the frame body 6. The through cavity 15 runs through the frame body 6 from top to bottom. When the manhole cover body 11 rotates relative to the manhole cover frame 1, the manhole cover body 11 rotates into the through cavity 15, thereby sealing the manhole cover frame 1 through the manhole cover body 11, or the manhole cover body 11 rotates out of the through cavity 15, thereby opening the manhole cover frame 1 through the manhole cover body 11, so that workers can inspect or clean it.

[0045] In one embodiment, the frame body 6 is provided with a first limiting part 16, the hinged cover 8 is provided with a second limiting part 17, and the manhole cover body 11 is rotatably disposed between the first limiting part 16 and the second limiting part 17.

[0046] This application limits the rotation angle of the manhole cover body 11 relative to the manhole cover frame 1 through the first limiting part 16 and the second limiting part 17. Specifically, as shown... Figure 2 As shown, a first limiting part 16 is provided on the manhole cover frame 1. When the manhole cover body 11 rotates relative to the manhole cover frame 1 to the closed state, the first limiting part 16 limits the manhole cover body 11 to prevent it from rotating further downward, thereby achieving a seal on the manhole cover frame 1 through the manhole cover body 11. A second limiting part 17 is provided on the hinged cover 8. The second limiting part 17 is the rear wall of the second clearance groove 14. When the manhole cover body 11 rotates relative to the manhole cover frame 1 to the open state, the second limiting part 17 limits the manhole cover body 11 to facilitate opening and closing the manhole cover body 11 to a suitable angle. Along the direction from the bottom to the top of the rear wall of the second clearance groove 14, the distance between the rear wall of the second clearance groove 14 and the center line of the manhole cover frame 1 increases, causing the second clearance groove 14 to tilt outward at a certain angle from bottom to top. At this angle, the manhole cover body 11 will not easily close automatically under the action of external force. Therefore, the manhole cover body 11 is rotatably disposed between the first limiting part 16 and the second limiting part 17. The second limiting part 17 limits the hinge rod 12 on the manhole cover body 11, so as to limit the manhole cover body 11 through the hinge rod 12.

[0047] In one embodiment, the first limiting part 16 includes a first limiting surface 18 and a second limiting surface 19. A limiting boss 20 is provided in the through cavity 15. The top surface of the limiting boss 20 forms the first limiting surface 18. The first limiting surface 18 is in contact with the manhole cover body 11. The bottom of the first clearance groove 13 forms the second limiting surface 19. The second limiting surface 19 is in contact with the hinge rod 12.

[0048] This application achieves the limiting of the manhole cover body 11 when it rotates into the through cavity 15 through the first limiting surface 18 and the second limiting surface 19. Specifically, as shown... Figure 2As shown, the inner wall of the through cavity 15 extends towards the centerline to form a limiting boss 20. The top surface of the limiting boss 20 forms a first limiting surface 18. When the manhole cover body 11 rotates into the through cavity 15 and is in a closed state on the manhole cover frame 1, the bottom surface of the manhole cover body 11 abuts against the first limiting surface 18 to prevent the manhole cover body 11 from continuing to rotate downward, thereby achieving a seal on the manhole cover frame 1 through the manhole cover body 11. In addition, the bottom of the first clearance groove 13 forms a second limiting surface 19. When the manhole cover body 11 rotates into the through cavity 15 and is in a closed state on the manhole cover frame 1, the second limiting surface 19 contacts the hinge rod 12 to limit the hinge rod 12 through the second limiting surface 19. Therefore, the manhole cover body 11 is limited by the first limiting surface 18, and the hinge rod 12 is limited by the second limiting surface 19, so as to realize the limiting of the manhole cover by the manhole cover frame 1 and improve the limiting stability.

[0049] In one embodiment, the first hinge end 3 is integrally formed with the manhole cover frame 1, and the second hinge end 4 is integrally formed with the manhole cover.

[0050] This application further improves the lifespan of manhole covers through an integral molding process. Specifically, the first hinge end 3 is integrally molded with the manhole cover frame 1. Therefore, the material of the first hinge end 3 is the same as that of the manhole cover frame 1, and the lifespan of the first hinge end 3 is the same as that of the manhole cover frame 1. The second hinge end 4 is integrally molded with the manhole cover body 2. The material of the second hinge end 4 is the same as that of the manhole cover body 2, and the lifespan of the second hinge end 4 is the same as that of the manhole cover body 2. Therefore, the hinge mechanism formed by the first hinge end 3 and the second hinge end 4 relies on the material and strength of the manhole cover body 2 and the manhole cover frame 1 themselves, rather than on the strength of the bolts, thus improving the lifespan of the hinge mechanism formed by the first hinge end 3 and the second hinge end 4.

[0051] In one embodiment, the manhole cover further includes a buffer member 30, which is located within the through cavity 15, is disposed on the limiting boss 20, and is disposed between the first limiting surface 18 and the manhole cover body 11.

[0052] This application uses a buffer element 30 to buffer the manhole cover body 2 when it is closed. Figure 1 , Figure 4 and Figure 5As shown, the buffer member 30 is disposed in the through cavity 15. The buffer member 30 is annular, and the annular buffer member 30 is disposed on the limiting boss 20. The buffer member 30 is limited by the limiting boss 20 and the through cavity 15. When the well cover body 11 is rotated into the through cavity 15 and the well cover body 11 is in a closed state on the well cover frame 1, the buffer member 30 is located between the first limiting surface 18 and the well cover body 11, so that the buffer member 30 can provide a buffering effect when the well cover body 11 is closed. In addition, when the well cover is rolled by vehicles and the like, the buffer member 30 can also provide a buffering effect, improving the stability of the well cover.

[0053] In one embodiment, the well cover further comprises an anti-falling net, wherein a profiled block 31 is arranged on the anti-falling net, a profiled hole 32 is arranged on the well cover frame 1, and the profiled block 31 is butted with or separated from the profiled hole 32.

[0054] The present application improves the safety when the well cover is opened through the anti-falling net. Specifically, an anti-falling net is arranged on the well cover of the present application to prevent pedestrians from accidentally falling into the inspection well when the well cover is overhauled. Further, as Figure 6 shown, a fixed seat 36 is arranged on the well cover frame 1, a profiled hole 32 is arranged on the fixed seat 36, and a profiled block 31 is arranged on the anti-falling net. Preferably, the profiled hole 32 is a T-shaped hole and the profiled block 31 is a T-shaped block. In use, a worker aligns the T-shaped block on the anti-falling net with the T-shaped hole, as Figure 8 shown, then inserts the T-shaped block into the T-shaped hole, and then rotates the T-shaped block so that the T-shaped block and the T-shaped hole are in a misaligned state, as Figure 9 shown, the T-shaped block cannot be disengaged from the T-shaped hole, so that the anti-falling net is installed on the well cover frame 1. Wherein, the T-shaped block is slightly smaller than the T-shaped hole, so that the T-shaped block can pass through the T-shaped hole conveniently. When the T-shaped block is misaligned with the T-shaped hole, the hole wall of the T-shaped hole blocks the T-shaped block from disengaging from the T-shaped hole, which increases active safety and enables better anti-falling performance of the well cover. Wherein, a plurality of profiled holes 32 are provided, preferably five profiled holes 32 are provided, and the five profiled holes 32 are arranged in a "gan" character layout.

[0055] Embodiment 2

[0056] An inspection well is provided, the inspection well comprises a well cover, the well cover comprises a well cover frame 1 and a well cover main body 2, a first hinged end 3 is arranged on the well cover frame 1, a second hinged end 4 is arranged on the well cover main body 2, the first hinged end 3 is a spherical hinged end or a spherical hinged cavity, the second hinged end 4 is a spherical hinged cavity or a spherical hinged end, and the spherical hinged end is hinged in the spherical hinged cavity.

[0057] The manhole cover body 2 of this application has a spherical hinge end, and the manhole cover frame 1 has a spherical hinge cavity. The spherical hinge end is hinged in the spherical hinge cavity to form a spherical hinge. The spherical hinge allows the manhole cover body 2 to rotate slightly in multiple directions, such as tilting and swinging. It can better adapt to the dynamic load of uneven road surface settlement or vehicle rolling, reduce local stress concentration, avoid the single-point fracture problem of bolted hinges, and thus improve the service life of manhole covers and inspection wells.

[0058] It should be noted that the above are merely preferred embodiments and technical principles applied in this application. Those skilled in the art will understand that this application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of this application. Therefore, although this application has been described in detail through the above embodiments, this application is not limited to the above embodiments. Under the circumstances of the concept and disclosed technical solutions of this application, other equivalent embodiments or equivalent technical means may also be included, all of which fall within the scope of protection of the claims of this application.

Claims

1. A manhole cover, characterized in that: The manhole cover includes a frame (1) and a body (2). The frame (1) is provided with a first hinge end (3) and the body (2) is provided with a second hinge end (4). The first hinge end (3) is a spherical hinge end or a spherical hinge cavity, and the second hinge end (4) is a spherical hinge cavity or a spherical hinge end. The spherical hinge end is hinged in the spherical hinge cavity.

2. The manhole cover according to claim 1, characterized in that: The manhole cover frame (1) includes a manhole base (5), a frame body (6), a hinge seat (7), and a hinge cover (8). The frame body (6) and the hinge seat (7) are both disposed on the manhole base (5), and the hinge cover (8) is disposed on the hinge seat (7). The first hinge end (3) is disposed on the hinge seat (7) and the hinge cover (8).

3. The manhole cover according to claim 2, characterized in that: The hinge cover (8) is provided with a first connecting part (33), and the hinge seat (7) is provided with a second connecting part (34). The first connecting part (33) and the second connecting part (34) are connected.

4. The manhole cover according to claim 2, characterized in that: The first hinge end (3) is a spherical hinge cavity. The hinge seat (7) is provided with a first hinge cavity (9), and the hinge cover (8) is provided with a second hinge cavity (10). The first hinge cavity (9) and the second hinge cavity (10) form the spherical hinge cavity.

5. The manhole cover according to claim 2, characterized in that: The second hinge end (4) is a spherical hinge end. The manhole cover body (2) includes a manhole cover body (11) and a hinge rod (12). The hinge rod (12) is disposed on the manhole cover body (11), and the second hinge end (4) is disposed on the hinge rod (12) at one end away from the manhole cover body (11).

6. The manhole cover according to claim 5, characterized in that: The frame body (6) is provided with a first clearance groove (13), and the hinge cover (8) is provided with a second clearance groove (14). The first clearance groove (13), the second clearance groove (14) and the spherical hinge cavity are connected in sequence. The hinge rod (12) is rotatably disposed in the first clearance groove (13) and the second clearance groove (14).

7. The manhole cover according to claim 6, characterized in that: The frame body (6) is provided with a through cavity (15) from top to bottom, and the manhole cover body (11) rotates to the inside or outside of the through cavity (15).

8. The manhole cover according to claim 7, characterized in that: The frame body (6) is provided with a first limiting part (16), the hinged cover (8) is provided with a second limiting part (17), and the manhole cover body (11) is rotatably disposed between the first limiting part (16) and the second limiting part (17).

9. The manhole cover according to claim 8, characterized in that: The first limiting part (16) includes a first limiting surface (18) and a second limiting surface (19). A limiting boss (20) is provided in the through cavity (15). The top surface of the limiting boss (20) forms the first limiting surface (18). The first limiting surface (18) is in contact with the manhole cover body (11). The bottom of the first clearance groove (13) forms the second limiting surface (19). The second limiting surface (19) is in contact with the hinge rod (12).

10. A manhole, characterized in that: Including manhole covers as described in any one of claims 1-9.

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