Height-adjustable nodular cast iron well lid

Abstract

The utility model discloses a height-adjustable nodular cast iron well lid which comprises a nodular cast iron well lid body, the nodular cast iron well lid body comprises an outer well ring, reinforcing ribs are integrally formed on the edge of the outer surface of the outer well ring, and a well lid plate is arranged in the outer well ring. By designing a convenient height adjusting mounting mechanism, the inner well ring can be fixed in the outer well ring, then the outer surface of the inner well ring is rotated through an internal thread pressing ring to be embedded into a built-in groove and fixed, and the outer surface of the inner well ring is reinforced; at the moment, when the well cover plate is installed on the upper surface of the outer well ring through the inner well ring, the height of the well cover plate can be conveniently adjusted, the well cover plate is reinforced and installed, meanwhile, asphalt is laid on the peripheral edge again, compaction is more compact, and installation is more stable when a vehicle runs frequently and is stressed; and the height adjustment convenience and the compaction effect of the nodular cast iron well lid main body during installation are improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of ductile iron manhole covers, specifically relating to an adjustable height ductile iron manhole cover. Background Technology

[0002] Existing ductile iron manhole covers are a type of ductile iron product, mainly made of ductile iron. Ductile iron is treated with spheroidization and inoculation to obtain spheroidal graphite, which effectively improves the mechanical properties of cast iron, especially its plasticity and toughness, thus achieving higher strength than carbon steel, making the manhole covers have higher strength for use.

[0003] Existing ductile iron manhole covers consist of a separate outer manhole ring and a manhole cover, with a fixed installation height. This makes it inconvenient to adjust the height of the ductile iron manhole cover. During conventional construction, when laying asphalt in layers, the manhole ring must be raised after the first layer of asphalt is laid. This often results in the manhole ring not being compacted properly around the perimeter, affecting the ease of height adjustment and the compaction effect of the ductile iron manhole cover during installation. Therefore, this utility model proposes an adjustable height ductile iron manhole cover. Utility Model Content

[0004] The purpose of this utility model is to provide an adjustable height ductile iron manhole cover to solve the problem mentioned in the background art, which states that the ductile iron manhole cover consists of a separate outer manhole ring and a manhole cover, with a fixed installation height, making it inconvenient to adjust the height of the ductile iron manhole cover. This also means that during conventional construction, when asphalt is laid in layers, the manhole ring must be raised after the first layer of asphalt is laid, often resulting in insufficient compaction around the manhole ring.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable height ductile iron manhole cover, comprising a ductile iron manhole cover body, the ductile iron manhole cover body including an outer manhole ring, the outer surface edge of the outer manhole ring being integrally formed with reinforcing ribs, a manhole cover plate being provided inside the outer manhole ring, and the ductile iron manhole cover body also being provided with:

[0006] A convenient height adjustment installation mechanism is provided, and the convenient adjustment installation mechanism includes a height adjustment installation component disposed inside the outer well ring and at the connection with the outer surface of the well cover plate, and a reinforcing fixing component is provided at the edge of the height adjustment installation component;

[0007] A reinforced support mechanism is provided, and the reinforced support mechanism includes a fixed connection component located at the middle position of the bottom end inside the outer well ring, and the upper surface of the fixed connection component is provided with the reinforced support component.

[0008] Preferably, the height adjustment mounting assembly includes an inner well ring disposed on the inner surface of the outer well ring, one side of the well cover plate is fixed to the inner well ring by mounting bolts, a fixed mounting seat is integrally disposed at the bottom edge of the inner surface of the inner well ring, a fixing bolt is disposed inside the fixed mounting seat, and the fixed mounting seat and the inner bottom of the outer well ring are rotatably fixed and installed by the fixing bolt.

[0009] Preferably, the inner well ring has a ring structure, and the outer surface structure of the well cover plate matches the inner surface structure of the inner well ring.

[0010] Preferably, the reinforcing fixing component includes an internal groove formed on the inner surface of the outer well ring, an external thread structure formed on the outside of the inner well ring, an internal thread clamping ring rotatably fixed inside the internal groove through the external thread structure, and a fixing bolt rotatably fixed at the upper surface edge of the internal thread clamping ring.

[0011] Preferably, the outer surface of the inner well ring and the inner surface of the outer well ring are rotatably fixed by the internal threaded clamping ring and the external threaded structure, and the top end of the internal threaded clamping ring is fixed to the upper surface of the outer well ring by the second fixing bolt.

[0012] Preferably, the fixed connection assembly includes an integrally formed side ring at the bottom edge inside the outer well ring, and a reinforcing hollow ring is fixed to the inner surface of the side ring by mounting bolts.

[0013] Preferably, the reinforcing support assembly includes an integrally formed support ring located at the middle position of the upper surface of the reinforcing hollow ring, a support hole located at the middle position of the lower surface of the manhole cover, the end of the support ring engaging with the interior of the support hole, and a reinforcing support plate welded to the edge of the upper surface of the reinforcing hollow ring, the end of the reinforcing support plate contacting the lower surface of the manhole cover.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] By designing a convenient height-adjustable installation mechanism, the inner manhole ring can be fixed inside the outer manhole ring. Then, the inner threaded clamping ring is rotated to embed into the built-in groove on the outer surface of the inner manhole ring and fixed, thus reinforcing the outer surface of the inner manhole ring. At this time, when the manhole cover is installed on the upper surface of the outer manhole ring through the inner manhole ring, it is convenient to adjust the height of the manhole cover and reinforce the installation. At the same time, when asphalt is laid at the perimeter edge, it is more compacted and tighter, making the installation more stable under the frequent stress of vehicle traffic. This improves the convenience of height adjustment and the tight compaction effect of the ductile iron manhole cover body during installation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a top view schematic diagram of the outer well ring, inner well ring, and reinforced hollow ring of this utility model;

[0019] Figure 4 This is a schematic diagram of the inner well ring, the internal threaded clamping ring, and the external thread structure of this utility model.

[0020] Figure 5 This utility model Figure 2 Enlarged structural diagram of section A;

[0021] Figure 6 This is a schematic diagram of the reinforced hollow ring and supporting retaining ring structure of this utility model;

[0022] In the diagram: 100, Ductile iron manhole cover body; 101, Outer manhole ring; 1011, Inner manhole ring; 1012, Internal threaded clamping ring; 1013, Fixing bolt one; 1014, Fixing mounting base; 1015, External thread structure; 1016, Fixing bolt two; 1017, Internal groove; 102, Manhole cover plate; 1021, Side ring; 1022, Reinforcing hollow ring; 1023, Support clasp; 1024, Support clasp hole; 1025, Reinforcing support plate; 103, Reinforcing rib. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1 to 6 This utility model provides a technical solution: an adjustable height ductile iron manhole cover, including a ductile iron manhole cover body 100, the ductile iron manhole cover body 100 including an outer manhole ring 101, a reinforcing rib 103 integrally formed at the outer surface edge of the outer manhole ring 101, and a manhole cover plate 102 provided inside the outer manhole ring 101. The manhole cover plate 102 can be installed on the ground to protect the manhole opening when used, and the reinforcing rib 103 strengthens the support at the edge of the outer manhole ring 101. The ductile iron manhole cover body 100 is also provided with:

[0025] The system includes a height-adjustable installation mechanism, comprising a height-adjustable installation component located inside the outer manhole ring 101 at the connection point with the outer surface of the manhole cover 102. The height-adjustable installation component has a reinforcing fixing component at its edge. When the ductile iron manhole cover body 100 is installed on the ground, the system allows for direct adjustment of the asphalt paving height on the manhole cover 102 and reinforces its installation. The asphalt paving at the perimeter edges is more compacted, improving the ease of height adjustment and the compaction effect of the ductile iron manhole cover body 100 during installation.

[0026] To facilitate the height adjustment and installation of the manhole cover 102 using the height adjustment assembly, and to ensure easy and tight compaction of asphalt, in this embodiment, preferably, the height adjustment and installation assembly includes an inner manhole ring 1011 disposed on the inner surface of the outer manhole ring 101. One side of the manhole cover 102 is fixed to the inner manhole ring 1011 by mounting bolts. This allows the inner manhole ring 1011 to be installed inside the outer manhole ring 101, and then the height of the outer manhole ring 101 can be adjusted and the asphalt laid and compacted more tightly using the inner manhole ring 1011. A fixed mounting base 1014 is integrally provided at the bottom edge of the inner surface of the inner well ring 1011. A fixing bolt 1013 is provided inside the fixed mounting base 1014. The fixed mounting base 1014 and the inner bottom of the outer well ring 101 are fixedly installed by rotating the fixing bolt 1013. When the inner well ring 1011 is closed inside the outer well ring 101, the fixing bolt 1013 passes through the inside of the fixed mounting base 1014 and the outer well ring 101 for fixed installation, which facilitates reinforcement and use.

[0027] To facilitate stronger fixing between the outer surface of the inner well ring 1011 and the inner surface of the outer well ring 1011 by strengthening the fixing component, and to make the installation of the inner well ring 1011 more secure and convenient for stable height adjustment, in this embodiment, preferably, the strengthening fixing component includes an internal groove 1017 formed on the inner surface of the outer well ring 1011, an external thread structure 1015 formed on the outside of the inner well ring 1011, and an internal thread clamping ring 1012 rotatably fixed inside the internal groove 1017 through the external thread structure 1015, allowing for movement within the internal groove 1017. The external thread structure 1015 rotates the internal thread clamping ring 1012 onto the outer surface of the inner well ring 1011 and embeds it into the interior groove 1017, which facilitates rotation, compression, and fixed installation. A fixing bolt 1016 is rotated at the edge of the upper surface of the internal thread clamping ring 1012. After the internal thread clamping ring 1012 is rotated into the interior groove 1017, the fixing bolt 1016 is rotated to fix the internal thread clamping ring 1012 to the outer well ring 101, which also facilitates the reinforcement of the inner well ring 1011 and the height adjustment of the well cover plate 102.

[0028] The reinforced support mechanism includes a fixed connection component located at the middle of the bottom of the inner well ring 101. The upper surface of the fixed connection component is provided with the reinforced support component. When the manhole cover 102 is closed inside the outer well ring 101 through the inner well ring 1011, the reinforced support mechanism strengthens the support of the manhole cover 102. When the manhole cover 102 is subjected to force by the frequent driving of vehicles, it is not easy to cause deformation and damage to the manhole cover 102, and it is not easy to cause serious sinking. This improves the reinforcement and support effect of the ductile iron manhole cover body 100 during installation and use, and extends its service life.

[0029] To facilitate the installation of the support ring 1023 and the reinforcing support plate 1025 through the fixed connection assembly, and to enhance the support, in this embodiment, preferably, the fixed connection assembly includes a side ring 1021 integrally formed at the bottom edge of the inner side of the outer well ring 101. A reinforcing hollow ring 1022 is fixed to the inner surface of the side ring 1021 by mounting bolts. The reinforcing hollow ring 1022 can be installed on the inner surface of the side ring 1021 and fixedly installed, which facilitates the fixed installation and support.

[0030] To facilitate reinforcement of the outer surface of the manhole cover 102 through the reinforced support assembly, making it less prone to deformation under vehicle impact, in this embodiment, preferably, the reinforced support assembly includes a support retaining ring 1023 integrally disposed at the middle position of the upper surface of the reinforced hollow ring 1022, and a support retaining hole 1024 opened at the middle position of the lower surface of the manhole cover 102. The end of the support retaining ring 1023 engages with the inside of the support retaining hole 1024, so that after the manhole cover 102 is closed and installed, the end of the support retaining ring 1023 engages with the inside of the support retaining hole 1024 to support the middle position of the lower surface of the manhole cover 102. A reinforced support plate 1025 is welded to the edge of the upper surface of the reinforced hollow ring 1022, and the end of the reinforced support plate 1025 contacts the lower surface of the manhole cover 102. After the manhole cover 102 is closed, the reinforced support plate 1025 reinforces the edge of the lower surface of the manhole cover 102, making it easy to reinforce and less prone to deformation and damage under pressure.

[0031] The working principle and usage process of this utility model are as follows: When using this adjustable height ductile iron manhole cover, firstly, the outer manhole ring 101 is fixed at the ground manhole opening. After installation, when the first layer of asphalt is laid, the inner manhole ring 1011 can be closed inside the outer manhole ring 101. A fixing bolt 1013 passes through the inside of the fixing mounting base 1014 to fix the inner manhole ring 1011 to the outer manhole ring 101. Then, inside the built-in groove 1017, the internal threaded clamping ring 1012 is rotated and fixed to the outer surface of the inner manhole ring 1011 via the external threaded structure 1015. The internal threaded clamping ring 1012 is embedded into the interior groove 1017, and the fixing bolt 1016 is rotated again to fix the internal threaded clamping ring 1012, thereby reinforcing the inner well ring 1011. Therefore, when the well cover plate 102 is installed on the upper surface of the outer well ring 101 through the inner well ring 1011, it is convenient to adjust the height of the well cover plate 102 and reinforce the installation. At the same time, when asphalt is laid again at the perimeter edge, it is more compacted and tighter, and the installation is more stable when the vehicle is frequently subjected to stress after installation. This improves the height adjustment convenience and compaction effect of the ductile iron well cover body 100 during installation.

[0032] Then, when the ductile iron manhole cover body 100 is installed and used, after the outer manhole ring 101 is fixedly installed, the reinforcing hollow ring 1022 can be closed at the bottom of the inner end of the outer manhole ring 101. The outer surface of the reinforcing hollow ring 1022 contacts the inner surface of the side ring 1021 and is fixed by the mounting bolts. After the fixed installation, the height of the manhole cover plate 102 is adjusted and fixed by the inner manhole ring 1011. At this time, the end of the support ring 1023 is embedded in the interior of the support hole 1024, and the end surface of the reinforcing support plate 1025 contacts the lower surface of the manhole cover plate 102. When the manhole cover plate 102 is subjected to force by the frequent driving of vehicles, the reinforcing hollow ring 1022, the support ring 1023 and the reinforcing support plate 1025 can strengthen the support and prevent the manhole cover plate 102 from deforming and being damaged. At the same time, it is not easy to cause serious sinking, thereby improving the strengthening support effect of the ductile iron manhole cover body 100 during installation and use and extending its service life.

[0033] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable height ductile iron manhole cover, comprising a ductile iron manhole cover body (100), the ductile iron manhole cover body (100) comprising an outer manhole ring (101), wherein reinforcing ribs (103) are integrally formed at the outer surface edge of the outer manhole ring (101), and a manhole cover plate (102) is provided inside the outer manhole ring (101), characterized in that: The ductile iron manhole cover body (100) is also equipped with: A convenient height adjustment installation mechanism is provided, and the convenient height adjustment installation mechanism includes a height adjustment installation component disposed inside the outer well ring (101) and at the connection with the outer surface of the well cover plate (102), and a reinforcing fixing component is provided at the edge of the height adjustment installation component; The reinforcing support mechanism includes a fixed connection component located at the middle position of the bottom end inside the outer well ring (101), and the upper surface of the fixed connection component is provided with the reinforcing support component.

2. The adjustable height ductile iron manhole cover according to claim 1, characterized in that: The height adjustment mounting assembly includes an inner well ring (1011) disposed on the inner surface of the outer well ring (101). One side of the well cover plate (102) is fixed to the inner well ring (1011) by mounting bolts. A fixed mounting seat (1014) is integrally provided at the bottom edge of the inner surface of the inner well ring (1011). A fixing bolt (1013) is provided inside the fixed mounting seat (1014). The fixed mounting seat (1014) and the inner bottom of the outer well ring (101) are rotatably fixed and installed by the fixing bolt (1013).

3. The adjustable height ductile iron manhole cover according to claim 2, characterized in that: The inner well ring (1011) has a ring structure, and the outer surface structure of the well cover plate (102) matches the inner surface structure of the inner well ring (1011).

4. The adjustable height ductile iron manhole cover according to claim 2, characterized in that: The reinforcing and fixing assembly includes an internal groove (1017) formed on the inner surface of the outer well ring (101), an external thread structure (1015) formed on the outside of the inner well ring (1011), an internal thread clamping ring (1012) is rotatably fixed inside the internal groove (1017) through the external thread structure (1015), and a fixing bolt (1016) is rotatably fixed at the edge of the upper surface of the internal thread clamping ring (1012).

5. An adjustable height ductile iron manhole cover according to claim 4, characterized in that: The outer surface of the inner well ring (1011) and the inner surface of the outer well ring (101) are fixed by rotation through the inner threaded clamping ring (1012) and the outer threaded structure (1015), and the top end of the inner threaded clamping ring (1012) is fixed to the upper surface of the outer well ring (101) by the second fixing bolt (1016).

6. The adjustable height ductile iron manhole cover according to claim 1, characterized in that: The fixed connection assembly includes a side ring (1021) integrally formed at the bottom edge inside the outer well ring (101), and a reinforcing hollow ring (1022) is fixed to the inner surface of the side ring (1021) by mounting bolts.

7. An adjustable height ductile iron manhole cover according to claim 6, characterized in that: The reinforcing support assembly includes an integrally formed support ring (1023) located at the middle position of the upper surface of the reinforcing hollow ring (1022). A support hole (1024) is provided at the middle position of the lower surface of the manhole cover plate (102). The end of the support ring (1023) engages with the interior of the support hole (1024). A reinforcing support plate (1025) is welded to the edge of the upper surface of the reinforcing hollow ring (1022). The end of the reinforcing support plate (1025) contacts the lower surface of the manhole cover plate (102).

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