Adjustable concrete prefabricated well lid

Abstract

The utility model relates to the technical field of prefabricated well lids, and discloses an adjustable concrete prefabricated well lid which comprises a main body, the main body comprises a base and a well lid body, the base and the well lid body are both formed by pouring concrete, and the base is in an annular shape. Through the design of the adjusting mechanism, the inspection well can flexibly adapt to different road surface heights, the problem of height difference between the inspection well and the road surface is effectively solved, the passing safety of pedestrians and vehicles is greatly improved, and the traffic accident risk caused by unevenness of the well lid is reduced; compared with a traditional iron or cast iron material, the well lid is more economical in cost, effectively reduces the risk of being stolen, relieves the burden of urban management and maintenance, is reasonable in structural design and easy and convenient to install, can easily adjust the height of the well lid by rotating the hand wheel, does not need a complex construction tool or process, and is suitable for popularization and application. And the installation efficiency and the maintenance convenience are improved.

Description

Technical Field

[0001] This utility model relates to the field of precast manhole cover technology, and more specifically to an adjustable precast concrete manhole cover. Background Technology

[0002] In urban infrastructure construction, inspection wells are an important component of the urban underground pipe network system, used for inspecting and maintaining buried pipes and equipment. However, with frequent road renovations and expansions, the height difference between inspection wells and road surfaces has become increasingly prominent, posing a major challenge to urban traffic safety and the city's appearance.

[0003] Traditionally, manhole covers are mostly made of iron or cast iron. While these materials offer high strength and durability, they are also expensive and prone to theft, causing significant inconvenience for urban management and maintenance. Furthermore, due to potential height variations in each manhole and settlement issues caused by unstable foundations during road use, manhole covers often fail to maintain a level surface after installation, resulting in covers protruding or sinking into the road surface. This height difference not only affects the safety of pedestrians and vehicles but can also lead to traffic accidents such as tire blowouts and bumps, posing a safety hazard to urban traffic.

[0004] Therefore, in view of this, we will study and improve the existing structure and its shortcomings, and provide an adjustable precast concrete manhole cover in order to achieve a more practical purpose. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an adjustable precast concrete manhole cover to solve the problems existing in the background art.

[0006] This utility model provides the following technical solution: an adjustable precast concrete manhole cover, comprising a main body, the main body including a base and a manhole cover body, both the base and the manhole cover body being cast from concrete. The base is annular in shape, used to support and fix the manhole cover body. The main body also includes an adjustment mechanism, the adjustment mechanism including a boss, a groove, a threaded groove, a threaded rod, and a handwheel. The threaded groove is formed on the base, the threaded rod is threadedly connected to the threaded groove, the handwheel is fixedly connected to the bottom end of the threaded rod, the boss is connected to the top end of the threaded rod through a bearing, the groove is formed at the bottom end of the manhole cover body and is adapted to the boss, and the threaded rod and boss are adjusted by rotating the handwheel. The height of the manhole cover is adjustable, allowing for flexible adaptation to different road surface heights. This effectively solves the problem of height difference between the manhole and the road surface, greatly improving the safety of pedestrians and vehicles and reducing the risk of traffic accidents caused by uneven manhole covers. Secondly, the concrete-cast manhole cover body is more economical than traditional iron or cast iron materials, effectively reducing the risk of theft and alleviating the burden of urban management and maintenance. Furthermore, the manhole cover has a reasonable structural design and is easy to install. The height can be easily adjusted by rotating the handwheel, without the need for complicated construction tools or processes, thus improving installation efficiency and maintenance convenience.

[0007] Furthermore, at least one horizontally positioned support steel plate is embedded inside the manhole cover body to enhance the structural strength and stability of the manhole cover body.

[0008] Furthermore, the supporting steel plate is cross-shaped to improve the overall structural integrity and ease of the casting process.

[0009] Furthermore, the manhole cover body is made of steel fiber reinforced concrete to improve its crack resistance and durability.

[0010] Furthermore, during the concrete pouring process of the manhole cover body and the base, mold forming is used to ensure the dimensional accuracy and shape consistency of the manhole cover body and the base.

[0011] Furthermore, the surface of the manhole cover is provided with anti-slip textures or anti-slip coatings to improve the safety of pedestrians and vehicles walking or driving on it.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. This utility model, through its adjustable mechanism design, can flexibly adapt to different road surface heights, effectively solving the problem of height difference between the manhole and the road surface, greatly improving the safety of pedestrians and vehicles, and reducing the risk of traffic accidents caused by uneven manhole covers. Secondly, the concrete-cast manhole cover body is not only more economical than traditional iron or cast iron materials, but also effectively reduces the risk of theft, alleviating the burden of urban management and maintenance. Furthermore, the manhole cover has a reasonable structural design and is easy to install. The height of the manhole cover can be easily adjusted by rotating the handwheel, without the need for complicated construction tools or processes, thus improving installation efficiency and maintenance convenience.

[0014] 2. This utility model significantly enhances the structural strength and stability of the manhole cover by pre-embedding a cross-shaped support steel plate inside the manhole cover body, making it more able to withstand the long-term crushing of heavy vehicles, extending the service life of the manhole cover, and reducing the maintenance costs caused by damage to the manhole cover.

[0015] Secondly, the use of steel fiber reinforced concrete for the manhole cover body further enhances its crack resistance and durability, enabling it to better adapt to complex and changing environmental conditions and reduce damage to the manhole cover caused by environmental erosion.

[0016] Furthermore, the application of mold forming technology ensures the accuracy of the main body dimensions and the consistency of the shape of the manhole cover, improves the interchangeability of the product and the installation efficiency, and reduces errors and debugging costs during the installation process. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention.

[0018] Figure 2 This is a three-dimensional disassembled schematic diagram of the structure of this utility model.

[0019] Figure 3 This is a three-dimensional schematic diagram of the base structure of this utility model.

[0020] Figure 4 This is a three-dimensional cross-sectional view of the manhole cover body structure of this utility model.

[0021] In the diagram: 100, main body; 110, base; 111, manhole cover body; 112, boss; 113, groove; 114, threaded groove; 115, threaded rod; 116, handwheel; 117, supporting steel plate. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0023] Example 1: This example provides an adjustable-height precast concrete manhole cover, designed to adapt to different installation needs through a flexible adjustment mechanism, ensuring the stability and safety of the manhole cover. The specific structure is as follows:

[0024] Main structure: The main body 100 of the manhole cover consists of a base 110 and a manhole cover body 111, both of which are integrally cast using high-quality concrete to ensure the integrity and durability of the structure. The base 110 is designed in a ring shape, and its function is to support and stabilize the manhole cover body 111 to prevent the manhole cover from shifting or collapsing during use.

[0025] Adjustment mechanism design:

[0026] The boss and groove fit together: A groove 113 is designed at the bottom of the manhole cover body 111, and a threaded groove 114 is machined on the base 110 accordingly. The boss 112 is mounted on the top of the threaded rod 115 by a bearing. The shape of the boss 112 is perfectly matched with the groove 113, so that the manhole cover body 111 can be stably adjusted relative to the base 110 in the vertical direction.

[0027] Threaded adjustment system: The threaded rod 115 and the threaded groove 114 form a precise threaded connection. The handwheel 116 is fastened to the bottom of the threaded rod 115, which allows the operator to drive the threaded rod 115 up and down by rotating the handwheel 116, thereby adjusting the height of the boss 112 and the manhole cover body 111.

[0028] Operating principle: When the height of the manhole cover body 111 needs to be adjusted, the maintenance personnel only need to rotate the handwheel 116 clockwise or counterclockwise to raise or lower the manhole cover body 111 to adapt to different ground heights or maintenance needs, ensuring that the manhole cover remains flat with the surrounding road surface and reducing safety hazards.

[0029] Example 2:

[0030] Based on Embodiment 1, this embodiment optimizes the structure of the manhole cover body 111 to further improve its load-bearing capacity and durability. Specific improvements are as follows:

[0031] Reinforced supporting steel plate: At least one horizontally arranged cross-shaped supporting steel plate 117 is pre-embedded inside the manhole cover body 111. This design not only enhances the structural strength and stability of the manhole cover body 111, but also optimizes the material flow during the casting process, simplifies the mold design, and improves production efficiency.

[0032] Material Upgrade: The 111 manhole cover body is made of steel fiber reinforced concrete. This material significantly improves the crack resistance and durability of concrete by adding short steel fibers, enabling the manhole cover to better resist long-term loads and environmental erosion.

[0033] Mold forming technology: Both the manhole cover body 111 and the base 110 are formed using high-precision molds during the concrete pouring process, ensuring the dimensional accuracy and shape consistency of each component, thereby improving the interchangeability and installation efficiency of the product.

[0034] Anti-slip surface treatment: The surface of the manhole cover body 111 is processed with anti-slip texture or coated with anti-slip coating. This design is intended to improve the safety of pedestrians and vehicles when walking or driving, and to avoid slipping or traffic accidents caused by wet road surfaces.

[0035] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0036] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0037] In conclusion, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An adjustable precast concrete manhole cover comprising a body (100), characterised in that: The main body (100) comprises a base (110) and a manhole cover body (111), both of which are cast with concrete, the base (110) is annular in shape for supporting and fixing the manhole cover body (111), the main body (100) further comprises an adjusting mechanism, the adjusting mechanism comprises a boss (112), a groove (113), a threaded groove (114), a threaded rod (115) and a hand wheel (116), the threaded groove (114) is provided on the base (110), the threaded rod (115) is threadedly connected with the threaded groove (114), the hand wheel (116) is fixedly connected to the bottom end of the threaded rod (115), the boss (112) is connected with the top end of the threaded rod (115) through a bearing, the groove (113) is provided at the bottom end of the manhole cover body (111) and is matched with the boss (112), the height of the threaded rod (115) and the boss (112) is adjusted by rotating the hand wheel (116), so that the height of the manhole cover body (111) is adjusted.

2. An adjustable precast concrete well lid as claimed in claim 1 wherein: At least one horizontally arranged support steel plate (117) is embedded in the manhole cover body (111) to enhance the structural strength and stability of the manhole cover body (111).

3. An adjustable precast concrete well lid as claimed in claim 2 wherein: The support steel plate (117) is cross-shaped to improve the overall structural property and the convenience of the casting process.

4. An adjustable precast concrete well cover as defined in claim 1, wherein: The manhole cover body (111) is made of steel fiber reinforced concrete material to improve its crack resistance and durability.

5. An adjustable precast concrete well cover as defined in claim 1, wherein: During the concrete casting process of the manhole cover body (111) and the base (110), a mold is used for forming to ensure the dimensional accuracy and shape consistency of the manhole cover body (111) and the base (110).

6. An adjustable precast concrete well cover according to claim 1, wherein: Anti-slip textures or anti-slip coatings are provided on the surface of the manhole cover body (111) to improve the safety of pedestrians and vehicles when walking or driving on it.

Images