A manhole cover structure for inspection wells

Abstract

This utility model relates to the field of municipal inspection and maintenance technology, and discloses a manhole cover structure for inspection wells, including a main body, a manhole base, and an adjustable manhole cover module. The adjustable manhole cover module includes: a manhole cover body disposed at the inner top of the manhole base; a threaded rod uniformly fixedly installed on the outer surface of the manhole cover body; a reinforcing plate uniformly fixedly installed on the outer surface of the manhole base; a limiting rod penetrating the edge of the top of the manhole base, with one side extending into the interior of the manhole cover body; and limiting holes, with at least twenty-four limiting holes, one side of the limiting rod extending into the interior of one of the limiting holes. By incorporating the adjustable manhole cover module, the problems of traditional manhole covers being unable to adapt to height changes after road surface elevation, prone to loosening and displacement, and requiring complex and inefficient replacement are solved.

Description

Technical Field

[0001] This utility model relates to the field of municipal inspection and maintenance technology, and more specifically to a manhole cover structure for inspection wells. Background Technology

[0002] In existing municipal manhole structures, the manhole base is typically cast and fixed integrally with the ground, with the manhole cover nested directly inside. However, this design generally suffers from a lack of height adjustment. When the road surface undergoes asphalt resurfacing or multiple elevation increases, the original manhole cover surface often falls below the road surface, causing severe bumps when vehicles pass over it and hindering rainwater drainage, seriously impacting road safety and drainage efficiency. Although some improved structures attempt to manually level the manhole cover using washers or by replacing the base, these methods are complex, labor-intensive, and have long replacement cycles, failing to meet the practical needs of urban road maintenance for rapid, efficient, and low-interference construction. Furthermore, the lack of reliable limiting and anti-rotation structures between the manhole cover and base makes it prone to loosening or even displacement under prolonged vehicle pressure, increasing the likelihood of manhole cover settlement and safety accidents. Therefore, there is an urgent need for a manhole cover structure that can achieve flexible height adjustment mechanically without replacing the base, while also possessing structural stability and reliable limiting capabilities. This would improve the overall performance of municipal facilities in terms of road adaptability, maintenance efficiency, and operational safety. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides a manhole cover structure for inspection wells to solve the problems existing in the background art.

[0004] This utility model provides the following technical solution: a manhole cover structure for inspection wells, comprising a main body, the main body including a manhole base, the manhole base being fixedly installed on the ground above a sewer, its bottom end extending into the sewer; the main body also includes an adjustable manhole cover module, the adjustable manhole cover module comprising:

[0005] The manhole cover body is located inside the top of the manhole seat, and the top of the inner wall of the manhole seat is uniformly provided with threaded grooves;

[0006] A threaded rod is uniformly and fixedly installed on the outer surface of the manhole cover body, and its threads are engaged with the threads on the inner wall of the manhole seat.

[0007] The reinforcing plate is uniformly and fixedly installed on the outer surface of the well base, and is tightly connected to the ground by concrete pouring.

[0008] A limiting rod is installed through the edge of the top of the well seat, with one side extending into the interior of the well cover body.

[0009] The system includes at least twenty-four limiting holes, with one side of the limiting rod extending into the interior of one of these holes. By incorporating an adjustable manhole cover module, comprising a manhole cover body, a threaded rod, a reinforcing plate, a limiting rod, and limiting holes, the system achieves height adjustment of the manhole cover without replacing the manhole base and enables multi-level limiting locking. This solves the problems of traditional manhole covers failing to adapt to height changes after road surface elevation, being prone to loosening and displacement, and requiring complex and inefficient replacement.

[0010] Furthermore, the top edge of the manhole cover extends to above the ground by one centimeter, and multiple drainage holes are evenly distributed on the top edge of the manhole cover. The drainage holes allow for timely drainage of rainwater, preventing water accumulation around the manhole cover, improving overall drainage performance, and enhancing drainage smoothness under adverse weather conditions.

[0011] Furthermore, an adjustment insertion hole is formed through the center of the manhole cover body, and a rotating groove is formed at the bottom of the manhole cover body. The rotating groove is perpendicular to the adjustment insertion hole. A height adjuster is inserted into the adjustment insertion hole, and a limit block is fixedly installed at the bottom of the height adjuster. The limit block is located inside the rotating groove perpendicular to the adjustment insertion hole. By providing an adjustment insertion hole and a height adjuster, the height of the manhole cover body can be easily adjusted, improving the operational efficiency and practicality of the manhole cover adjustment process and adapting to construction environments with different road surface thicknesses.

[0012] Furthermore, a small threaded groove is provided on one side of the height adjuster, and a rotating handle is rotatably installed inside the threaded groove. The rotating handle allows for manual operation of the height adjuster, making manhole cover height adjustment more effortless and precise, avoiding reliance on additional tools, and enhancing on-site operational flexibility.

[0013] Furthermore, multiple reinforcing rings are fixedly installed on the reinforcing plate. These reinforcing rings are all annular in shape, and their main body material is the same as that of the reinforcing plate. By incorporating these reinforcing rings, the structural strength of the reinforcing plate is enhanced, effectively preventing structural fatigue or loosening of the manhole cover under long-term vehicle pressure, thus improving overall durability and safety.

[0014] Furthermore, a limiting base is fixedly installed at the bottom of the manhole base, and an indicator ring is fixedly installed on the top of the outer surface of the manhole base. The top surface of the indicator ring is at the same height as the sewer floor. By setting the limiting base and the indicator ring, the stability of the manhole base installation can be enhanced, and precise position guidance can be provided during construction. This ensures a tight fit between the manhole base and the sewer structure surface and prevents concrete from clogging the drainage holes, thereby improving construction accuracy and stability in later use.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] This utility model, by providing an adjustable manhole cover module, including a manhole cover body, a threaded rod, a reinforcing plate, a limiting rod, and a limiting hole, achieves the effect of adjusting the height of the manhole cover without replacing the manhole seat and realizing multi-level limiting locking. It solves the problems of traditional manhole covers being unable to adapt to height changes after the road surface is raised, being prone to loosening and displacement, and being complicated and inefficient to replace.

[0017] This utility model, by providing drainage holes, can effectively drain rainwater in a timely manner, prevent water accumulation around the manhole cover, improve overall drainage performance, and enhance drainage smoothness under severe weather conditions. Attached Figure Description

[0018] Figure 1 This is a three-dimensional sectional view of the structure of this utility model.

[0019] Figure 2 This is a frontal perspective three-dimensional schematic diagram of the structure of this utility model.

[0020] Figure 3 This is a partial three-dimensional structural schematic diagram of the present invention.

[0021] Figure 4 This is a rear-view three-dimensional schematic diagram of the structure of this utility model.

[0022] The attached diagram is labeled as follows: 100, manhole base; 110, manhole cover body; 111, threaded rod; 112, reinforcing plate; 113, limiting rod; 114, limiting insertion hole; 115, drainage hole; 116, adjusting insertion hole; 117, height adjuster; 118, rotating handle; 119, reinforcing ring; 120, limiting base; 121, indicator ring. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Example 1:

[0024] Reference Figure 1 and Figure 2 This utility model provides a manhole cover structure for inspection wells, including a main body, a manhole base 100, which is fixedly installed on the ground above a sewer, with its bottom end extending into the sewer. The main body also includes an adjustable manhole cover module, which includes:

[0025] The manhole cover body 110 is located inside the top of the manhole seat 100, and the top of the inner wall of the manhole seat 100 is evenly provided with threaded grooves.

[0026] Threaded rod 111 is uniformly and fixedly installed on the outer surface of the manhole cover body 110, and its threads are engaged with the threads on the inner wall of the manhole seat 100.

[0027] The reinforcing plate 112 is uniformly fixedly installed on the outer surface of the well base 100 and is tightly connected to the ground by concrete pouring.

[0028] A limiting rod 113 is installed through the edge of the top of the well base 100, with one side extending into the interior of the well cover body 110.

[0029] The limiting socket 114 has at least twenty-four holes, and one side of the limiting rod 113 extends into the interior of one of the limiting sockets 114.

[0030] The top edge of the well base 100 extends above the ground, with an extension height of one centimeter. Multiple drainage holes 115 are evenly provided on the top edge of the well base 100.

[0031] Working principle: The manhole base 100 extends into the sewer and is firmly connected to the ground concrete via a reinforcing plate 112, forming a stable foundation. The manhole cover body 110 engages with the threaded groove on the inner wall of the manhole base 100 via an external threaded rod 111, allowing for height adjustment. After rotating the manhole cover body 110 to the desired height, the operator inserts the limiting rod 113 from the top edge of the manhole base 100 and locks it into the corresponding limiting hole 114 on the outside of the manhole cover body 110, thus locking the height and preventing loosening or displacement due to vibration or use. Multiple drainage holes 115 on the top edge of the manhole base 100 effectively guide road water into the manhole, preventing water accumulation and blockage, improving drainage performance, and ensuring that the overall structure of the manhole maintains good adjustability and stability even in harsh environments. Example 2:

[0032] Reference Figure 1 The difference between Embodiment 2 and Embodiment 1 is that: an adjustment insertion hole 116 is provided through the center of the manhole cover body 110, and a rotating slot is provided at the bottom of the manhole cover body 110. The rotating slot is perpendicular to the adjustment insertion hole 116. A height adjuster 117 is inserted inside the adjustment insertion hole 116. A limit block is fixedly installed at the bottom of the height adjuster 117. The limit block is set inside the rotating slot that is perpendicular to the adjustment insertion hole 116.

[0033] A small threaded groove is provided on one side of the height adjuster 117, and a rotating handle 118 is rotatably installed inside the small threaded groove.

[0034] Multiple reinforcing rings 119 are fixedly installed on the reinforcing plate 112. All reinforcing rings 119 are annular in shape, and the main body material of the reinforcing rings 119 is the same as that of the reinforcing plate 112.

[0035] A limiting base 120 is fixedly installed at the bottom of the well base 100, and an indicator ring 121 is fixedly installed at the top of the outer surface of the well base 100. The top surface of the indicator ring 121 is at the same height as the sewer floor.

[0036] Working principle: Based on embodiment one, an adjustment insertion hole 116 is further provided in the center of the manhole cover body 110. Construction personnel can insert the height adjuster 117 into the adjustment insertion hole 116 and rotate it so that the limiting block at its bottom engages with the rotating groove at the bottom of the manhole cover body 110, achieving a reliable fitting connection. Subsequently, rotating the handle 118 can drive the height adjuster 117 to move up and down in a spiral motion, thereby achieving fine-tuning control of the height of the manhole cover body 110 inside the manhole seat 100, and improving the height adjustment... The precision and convenience of the joint; the multiple reinforcing rings 119 added to the outside of the reinforcing plate 112 can further enhance the structural strength of the reinforcing plate 112 under stress and improve the overall anti-settlement ability of the well base 100; the limiting base 120 set at the bottom of the well base 100 is used to fit tightly with the lower sewer structure surface to prevent the structure from sinking and shifting; at the same time, the indicator ring 121 installed on the top of the outer surface of the well base 100 can mark the boundary during concrete construction to prevent accidental sealing of the drainage hole, ensuring accurate construction, smooth drainage, convenient adjustment and reliable operation of the overall structure.

Claims

1. A manhole cover structure for inspection wells, comprising a main structural body, characterized in that, The main structure includes a manhole base (100), which is fixedly installed on the ground above the sewer, with its bottom end extending into the sewer. The main structure also includes an adjustable manhole cover module, which includes: The manhole cover body (110) is located at the top inside of the manhole seat (100), and the top of the inner wall of the manhole seat (100) is uniformly provided with threaded grooves; Threaded rod (111), the threaded rod (111) is uniformly fixedly installed on the outer surface of the manhole cover body (110), and it is engaged with the thread on the inner wall of the manhole seat (100); The reinforcing plate (112) is uniformly fixed on the outer surface of the well base (100) and is tightly connected to the ground by concrete pouring. A limiting rod (113) is installed through the edge of the top of the well seat (100), with one side extending into the interior of the well cover body (110); The limiting socket (114) has at least twenty-four limiting sockets (114), and one side of the limiting rod (113) extends into the interior of one of the limiting sockets (114).

2. The manhole cover structure for inspection wells according to claim 1, characterized in that: The top edge of the well base (100) extends above the ground, with an extension height of one centimeter. Multiple drainage holes (115) are evenly provided on the top edge of the well base (100).

3. The manhole cover structure for inspection wells according to claim 1, characterized in that: An adjustment insertion hole (116) is provided through the center of the manhole cover body (110). A rotating slot is provided at the bottom end of the manhole cover body (110). The rotating slot is perpendicular to the adjustment insertion hole (116). A height adjuster (117) is inserted inside the adjustment insertion hole (116). A limit block is fixedly installed at the bottom end of the height adjuster (117). The limit block is set inside the rotating slot that is perpendicular to the adjustment insertion hole (116).

4. The manhole cover structure for inspection wells according to claim 3, characterized in that: The height adjuster (117) has a small threaded groove on one side, and a rotating handle (118) is rotatably installed inside the small threaded groove.

5. The manhole cover structure for inspection wells according to claim 1, characterized in that: Multiple reinforcing rings (119) are fixedly installed on the reinforcing plate (112). The reinforcing rings (119) are all annular in shape, and the main material of the reinforcing rings (119) is the same as that of the reinforcing plate (112).

6. The manhole cover structure for inspection wells according to claim 1, characterized in that: A limiting base (120) is fixedly installed at the bottom end of the well base (100), and an indicator ring (121) is fixedly installed at the top of the outer surface of the well base (100). The height of the top surface of the indicator ring (121) is the same as the height of the sewer floor.

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