Well lid for municipal pipe network

Abstract

The utility model discloses a well lid for a municipal pipe network, relates to the technical field of municipal pipe networks, and solves the technical problem that the use range and the service life of the well lid of the municipal pipe network are influenced by the existence of magnetic materials because the state of the locking position of the well lid of the municipal pipe network is limited by the existing part of magnetic materials. A rotary limiting rod and an operation column are arranged between a cover body and a locking wheel, the limiting rod is fixedly connected with the locking wheel, the position of the locking wheel is further controlled in an expanded mode, a slidable clamping block is arranged in the operation column, the clamping block can make contact with a clamping groove in the surface of the limiting rod, and therefore when the clamping block in the operation column slides out to make contact with the clamping groove, the locking wheel is locked. The limiting rod and the locking wheel can be driven to rotate only by rotation of the operation column, the clamping block needs to be extruded by a structure within a certain width range to slide outwards, then a structure in a specific shape needs to be inserted into the operation column for control, a magnetic attraction structure is replaced for driving, the application range is wider, and the service life can be guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of municipal pipeline network and relates to manhole cover technology, specifically a manhole cover for municipal pipeline network. Background Technology

[0002] Municipal pipeline networks refer to urban infrastructure construction consisting of multiple pipeline systems, including road networks, drainage networks, water supply networks, gas networks, and heating networks. Among them, manhole covers for municipal pipeline networks generally have significant characteristics and advantages in terms of load-bearing capacity, anti-theft performance, sealing performance, materials, and design.

[0003] The reference patent is titled "A Manhole Cover for Municipal Pipeline Networks" (Patent Publication No.: CN216339995U). The manhole cover is opened by rotating a drive rod to a certain angle and disengaging it from the locking teeth. At the same time, a magnetic structure is set inside the manhole cover to further restrict the rotation of the drive rod, ensuring that the drive rod cannot rotate when the manhole cover does not need to be opened. The manhole cover can only be moved afterward by a matching magnetic structure, thus releasing the rotation restriction on the drive rod.

[0004] However, the following problems exist when implementing the above technical solutions: The movement of the limiting structure for the drive rod in the above structure is mainly driven by an external matching magnetic structure. Therefore, the municipal pipeline manhole cover also has internal magnetism. However, the fact that its internal structure is magnetic and requires the magnetic structure to drive the drive rod to rotate limits the application scenarios of the above manhole cover. High temperature, humidity and other harsh environments, as well as strong magnetic field environments, will all have a negative impact on the performance of magnetic materials. Moreover, over time, the magnetism on the surface of the magnetic material will decay. It is difficult to guarantee the usable time of the limiting structure during use, that is, the usable time of the municipal pipeline manhole cover is difficult to guarantee.

[0005] Therefore, this utility model proposes a manhole cover for municipal pipeline networks. Utility Model Content

[0006] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a manhole cover for municipal pipeline networks, which solves the problem that some existing manhole covers rely on magnetic materials to restrict their locking position, thus affecting the scope of use and service life of the manhole cover.

[0007] To achieve the above objectives, according to an embodiment of the first aspect of this utility model, a manhole cover for municipal pipeline networks is provided, comprising a cover body and a locking wheel, wherein the locking wheel is rotatably connected to the inside of the cover body; a limiting mechanism is provided between the cover body and the locking wheel, the limiting mechanism comprising:

[0008] A limiting rod is fixedly connected to one end of the locking wheel near the cover, and a sliding spring is fixedly connected between the cover and the limiting rod;

[0009] An operating column is slidably connected to the inside of the cover. A locking block is slidably connected inside the operating column. The length of the locking block is less than the diameter of the operating column. A locking spring is fixedly connected between the locking block and the operating column. A locking groove is opened on the side of the limiting rod near the operating column. The locking groove is adapted to the locking block. The distance between the operating column and the limiting rod is less than the length of the locking block.

[0010] The operating lever is slidably connected to the operating column. The cross-section of the operating lever is trapezoidal, and its size gradually decreases from top to bottom. The length at the minimum position is less than the gap length between the locking block and the operating column, and the length at the maximum position is less than the diameter of the operating column.

[0011] Optionally, a sliding groove is provided inside the cover, the sliding groove is adapted to the limiting rod, and one end of the sliding spring is fixedly connected to the inner wall of the sliding groove.

[0012] Optionally, the surface of the cover is provided with a movable groove, which is adapted to the operating column and is connected to the sliding groove.

[0013] Optionally, when the locking spring is in a relaxed state, the side of the locking block near the locking wheel coincides with the edge of the operating column.

[0014] Optionally, a sealing block is rotatably connected to one end of the operating column away from the cover, a through rod is fixedly connected inside the cover, the through rod passes through the sealing block, a torsion spring is sleeved on the surface of the through rod, and the two ends of the torsion spring are fixedly connected to the cover and the sealing block respectively.

[0015] Optionally, after the operating column and the sealing block are fully fitted, the upper surface of the sealing block and the upper surface of the cover are on the same horizontal plane.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: A rotational limiting rod and an operating column are set between the cover and the locking wheel. The limiting rod and the locking wheel are fixedly connected, further expanding the control position of the locking wheel. A sliding locking block is set inside the operating column. The locking block can contact the locking groove on the surface of the limiting rod. When the locking block inside the operating column slides out and contacts the locking groove, the rotation of the operating column can drive the limiting rod and the locking wheel to rotate. The outward sliding of the locking block requires structural compression within a certain width range. An operating rod with a rectangular cross-section is set to cooperate with the operating column and the locking block to realize the movement of the locking block. Furthermore, a structure of a specific shape needs to be inserted into the operating column for control. By limiting the position of the locking block inside the operating column, the rotation of the limiting rod is limited. This replaces the magnetic suction structure drive, which has a wider range of applications and can ensure a longer service life. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural view of the present invention;

[0018] Figure 2 This is a three-dimensional sectional view of the operating lever of this utility model;

[0019] Figure 3 This is a three-dimensional structural cross-sectional view of the torsion spring of this utility model;

[0020] Figure 4 For the present utility model Figure 1 Enlarged view of the local structure at point A;

[0021] Figure 5 For the present utility model Figure 2 Enlarged view of the local structure at point B;

[0022] Figure 6 For the present utility model Figure 3 Enlarged view of the local structure at point C.

[0023] In the diagram: 1. Cover; 2. Locking wheel;

[0024] 31. Limiting rod; 32. Sliding spring; 33. Operating column; 34. Locking block; 35. Locking spring; 36. Locking groove; 37. Operating rod;

[0025] 41. Sliding groove; 42. Moving groove;

[0026] 51. Sealing block; 52. Through rod; 53. Torsion spring. Detailed Implementation

[0027] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] like Figure 1-6 As shown, a manhole cover for municipal pipeline network includes a cover body 1 and a locking wheel 2. The cover body 1 is fixedly installed on the surface of the well, and the locking wheel 2 is rotatably connected to the inside of the cover body 1.

[0029] It should be noted that a locking tooth adapted to the locking wheel 2 is fixedly connected to the inner wall of the well. The shape and positional relationship between the locking wheel 2 and the locking tooth are the same as those in the reference patent. The locking wheel 2 can be pulled upward when rotated to a designated position.

[0030] A limiting mechanism is provided between the cover 1 and the locking wheel 2, the limiting mechanism including:

[0031] A limiting rod 31 is fixedly connected to one end of the locking wheel 2 near the cover 1. A sliding groove 41 is provided inside the cover 1, which is adapted to the limiting rod 31. A sliding spring 32 is fixedly connected between the limiting rod 31 and the sliding groove 41. The limiting rod 31 extends the driving structure of the locking wheel 2 outward, thereby providing more space for structural arrangement, which facilitates the control of the rotation of the locking wheel 2.

[0032] The operating column 33 is slidably connected to the inside of the cover 1. The surface of the cover 1 is provided with a moving groove 42, which is adapted to the operating column 33. The moving groove 42 is in contact with the sliding groove 41. That is, the inside of the cover 1 is provided with a groove of a certain angle and irregular shape that penetrates the cover 1. While providing space for the structure to move, it can also guide a certain amount of water to flow downward, avoiding rainwater and other water from being in contact with the structure for a long time, which would cause damage to the structure and affect the service life.

[0033] The operating column 33 is internally connected to a locking block 34, and a locking spring 35 is fixedly connected between the locking block 34 and the operating column 33. A locking groove 36 is provided on the side of the limiting rod 31 near the operating column 33, and the locking groove 36 is adapted to the locking block 34. The distance between the operating column 33 and the limiting rod 31 is less than the length of the locking block 34. By sliding the operating column 33, the locking block 34 can be moved closer to the locking groove 36. When the locking spring 35 is in a relaxed state, the side of the locking block 34 near the locking wheel 2 coincides with the edge of the operating column 33, and there is a gap between the side of the locking block 34 away from the locking wheel 2 and the inside of the operating column 33.

[0034] The operating lever 37 is slidably connected to the operating column 33. The cross-section of the operating lever 37 is trapezoidal, and its size gradually decreases from top to bottom. The length at the smallest position is less than the gap length between the locking block 34 and the operating column 33, and the length at the largest position is less than the diameter of the operating column 33 but greater than the distance between the locking block 34 and the limiting rod 31. That is, the operating lever 37 can be inserted between the operating column 33 and the locking block 34, and continuously pressed against the locking block 34. Its surface will push the locking block 34 to move towards the limiting rod 31, causing the locking block 34 to contact the locking groove 36. In turn, the rotation of the locking block 34 can drive the limiting rod 31 to rotate through the locking groove 36.

[0035] In practical applications, this municipal pipeline manhole cover features a rotational limiting rod 31 and an operating column 33 between the cover body 1 and the locking wheel 2. The limiting rod 31 and the locking wheel 2 are fixedly connected, further expanding the control over the position of the locking wheel 2. The operating column 33 contains a sliding locking block 34, which can contact the locking groove 36 on the surface of the limiting rod 31. When the locking block 34 slides out and contacts the locking groove 36, the rotation of the operating column 33 can drive the limiting rod 31 and the locking wheel 2 to rotate. The outward sliding of the locking block 34 requires structural compression within a certain width. An operating rod 37 with a rectangular cross-section is used to cooperate with the operating column 33 and the locking block 34 to move the locking block 34. Furthermore, a structure of a specific shape needs to be inserted into the operating column 33 for control. By limiting the position of the locking block 34 inside the operating column 33, the rotation of the limiting rod 31 is restricted, replacing the magnetic drive structure. This approach offers a wider range of applications and ensures a longer service life.

[0036] In some specific implementations, a sealing block 51 is rotatably connected to one end of the operating column 33 away from the cover 1. A structure is provided between the non-rotating side of the sealing block 51 and the cover 1 for fixing. This structure includes, but is not limited to, locks and bolts.

[0037] In a further embodiment, a through rod 52 is fixedly connected inside the cover 1, the through rod 52 passes through the sealing block 51, and a torsion spring 53 is sleeved on the surface of the through rod 52. One end of the torsion spring 53 is fixedly connected to the inside of the cover 1, and the other end of the torsion spring 53 is fixedly connected to the inside of the sealing block 51.

[0038] In a further embodiment, after the operating column 33 and the sealing block 51 are fully fitted together, the upper surface of the sealing block 51 and the upper surface of the cover 1 are located on the same horizontal plane.

[0039] The working principle of this utility model is as follows: When it is necessary to open the cover 1, first rotate the sealing block 51 to cause the sealing block 51 to disengage from one end of the operating column 33. Then, insert the operating rod 37 into the operating column 33. The operating rod 37 slides into the operating column 33, adhering to the locking block 34. The sliding of the operating rod 37 causes the locking block 34 to slide out of the operating column 33. After the operating rod 37 slides to the designated position, the position of the locking block 34 is determined. Then, rotate the operating column 33. The rotation of the operating column 33 causes the locking block 34 to engage in the locking groove 36. Rotate the operating column 33 again, and the locking block 34 drives the limiting rod 31 to rotate inside the cover 1. The sliding of the limiting rod 31 causes the locking wheel 2 to rotate. The operating column 33 slides to one end, and the locking wheel 2 disengages from the locking teeth. At this time, the cover 1 can be removed.

[0040] The above embodiments are only used to illustrate the technical methods of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of this utility model without departing from the spirit and scope of the technical methods of this utility model.

Claims

1. A manhole cover for municipal pipeline networks, comprising a cover body (1) and a locking wheel (2), wherein the locking wheel (2) is rotatably connected to the inside of the cover body (1); characterized in that, A limiting mechanism is provided between the cover (1) and the locking wheel (2), the limiting mechanism including: A limiting rod (31) is fixedly connected to one end of the locking wheel (2) near the cover (1), and a sliding spring (32) is fixedly connected between the cover (1) and the limiting rod (31). An operating column (33) is slidably connected to the inside of the cover (1). A locking block (34) is slidably connected inside the operating column (33). The length of the locking block (34) is less than the diameter of the operating column (33). A locking spring (35) is fixedly connected between the locking block (34) and the operating column (33). A locking groove (36) is provided on the side of the limiting rod (31) near the operating column (33). The locking groove (36) is adapted to the locking block (34). The distance between the operating column (33) and the limiting rod (31) is less than the length of the locking block (34). The operating lever (37) is slidably connected to the operating column (33). The cross-section of the operating lever (37) is trapezoidal, and its size gradually decreases from top to bottom. The length at the minimum position is less than the gap length between the locking block (34) and the operating column (33), and the length at the maximum position is less than the diameter of the operating column (33).

2. A manhole cover for municipal pipelines according to claim 1, characterized in that, The cover (1) has a sliding groove (41) inside, which is adapted to the limiting rod (31), and one end of the sliding spring (32) is fixedly connected to the inner wall of the sliding groove (41).

3. A manhole cover for municipal pipelines according to claim 2, characterized in that, The surface of the cover (1) is provided with a moving groove (42), which is adapted to the operating column (33) and is connected to the sliding groove (41).

4. A manhole cover for municipal pipelines according to claim 1, characterized in that, When the locking spring (35) is in a relaxed state, the side of the locking block (34) near the locking wheel (2) coincides with the edge of the operating column (33).

5. A manhole cover for municipal pipelines according to claim 1, characterized in that, A sealing block (51) is rotatably connected to one end of the operating column (33) away from the cover (1). A through rod (52) is fixedly connected inside the cover (1). The through rod (52) passes through the sealing block (51). A torsion spring (53) is sleeved on the surface of the through rod (52). The two ends of the torsion spring (53) are fixedly connected to the cover (1) and the sealing block (51) respectively.

6. A manhole cover for municipal pipelines according to claim 5, characterized in that, After the operating column (33) and the sealing block (51) are fully fitted together, the upper surface of the sealing block (51) and the upper surface of the cover (1) are on the same horizontal plane.

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