High-strength plastic inspection well reducer well ring

Abstract

The utility model relates to the technical field of inspection shaft, disclose a kind of high-strength plastic inspection shaft variable-diameter well circle, comprising: well circle body, the longitudinal section of well circle body is set as convex letter, well circle body includes upper well circle and lower well circle, the inner diameter of lower well circle is greater than the inner diameter of upper well circle.The utility model matches the well lid of DN700 by upper well circle, lower well circle matches the well shaft of outer diameter greater than DN700, the connecting line between the inner wall of upper well circle and the inner wall of lower well circle is polyline structure, it presents as convex letter structure as a whole, greatly improve the adaptability of well circle, solve the problem that the outer diameter of well shaft is greater than DN700 in the prior art, only DN800 well lid and DN800 well circle can be used, can cause the problem of large increase in cost, meet the variable-diameter demand of same inspection shaft in different pipeline system, reduce accessory inventory and construction cost.

Description

Technical Field

[0001] This utility model relates to the field of inspection well technology, and in particular to a high-strength plastic inspection well variable diameter ring. Background Technology

[0002] According to the technical requirements for plastic inspection wells for urban drainage (GB41048-2021), a DN700 manhole cover (outer diameter) can only be matched with a DN700 manhole ring (inner diameter) to match a DN700 manhole shaft (outer diameter), and a DN800 manhole cover (outer diameter) can only be matched with a DN800 manhole ring (inner diameter) to match a DN800 manhole shaft (outer diameter).

[0003] like Figure 3 As shown, both DN700 and DN800 manhole rings (which can be called ordinary manhole rings) include a manhole ring body 100. The manhole ring body 100 has a support platform 200 for placing the manhole cover 400. The outer diameter of the manhole ring body 100 has a support seat 300 that contacts the base layer 700. The bottom of the support platform 200 abuts against the manhole cylinder 500, and the inner diameter of the support platform 200 matches the inner diameter of the manhole cylinder 500. In fact, the inner wall of the manhole ring body 100 (i.e., the line connecting the manhole ring body 100 and the inner wall of the manhole cover 400 and the manhole cylinder 500) is generally a straight structure. The only difference is that the support platform 200 for placing the manhole cover 400 is added inside the manhole ring body 100.

[0004] If the outer diameter of the well shaft is greater than DN700, then only DN800 well covers and DN800 well rings can be used. Using DN800 well covers and DN800 well rings will result in a significant increase in cost. Utility Model Content

[0005] This application discloses a high-strength plastic manhole variable diameter ring to solve the problem that in the prior art, when the outer diameter of the manhole is greater than DN700, using a DN800 manhole cover and a DN800 manhole ring will cause a significant increase in cost.

[0006] To solve the above problems, the present invention adopts the following technical solution: A high-strength plastic manhole variable diameter ring includes: a ring body, the longitudinal section of which is convex, the ring body including an upper ring and a lower ring, the inner diameter of the lower ring being larger than that of the upper ring.

[0007] Furthermore, multiple first reinforcing ribs are evenly arranged on the outer circumference of the upper well ring.

[0008] Furthermore, the plurality of first reinforcing ribs include a plurality of reinforcing ribs with rectangular longitudinal sections and a plurality of reinforcing ribs with triangular longitudinal sections, with the plurality of reinforcing ribs with rectangular longitudinal sections and the plurality of reinforcing ribs with triangular longitudinal sections spaced apart.

[0009] Furthermore, multiple second reinforcing ribs are evenly arranged around the outer wall of the lower well ring, and the longitudinal section of the second reinforcing ribs is rectangular.

[0010] Furthermore, multiple third reinforcing ribs are provided along the axial direction on the outer wall of the lower well ring, and the cross-section of the third reinforcing ribs is arranged in a ring shape.

[0011] Furthermore, a support pad is provided at the bottom of the lower well ring, and the longitudinal section of the support pad is convex.

[0012] Furthermore, a support platform is provided at the bottom of the upper well ring to support the well cover, and a support seat is provided at the bottom of the outer wall of the upper well ring, with the bottom of the support seat connected to the lower well ring.

[0013] Furthermore, the inner diameter of the upper well ring matches the outer diameter of the well cover, and the inner diameter of the lower well ring matches the outer diameter of the well shaft.

[0014] Furthermore, the upper and lower well rings are integrated into a single unit.

[0015] The technical solution adopted in this utility model can achieve the following beneficial effects: 1. This utility model uses an upper manhole ring to match a DN700 manhole cover and a lower manhole ring to match a manhole with an outer diameter greater than DN700. The line connecting the inner walls of the upper and lower manhole rings is a zigzag (similar to a Z-shape) structure, and the overall structure is a convex shape. This greatly improves the adaptability of the manhole ring and solves the problem in the prior art that when the outer diameter of the manhole is greater than DN700, only DN800 manhole covers and DN800 manhole rings can be used, which would cause a significant increase in cost. This model meets the diameter variation requirements of the same inspection manhole in different pipeline systems, reduces the inventory of accessories and construction costs, and the convex shape structure makes the manhole ring body form a natural load-bearing step, which distributes the stress more evenly. Combined with high-strength plastic material (this utility model mainly uses polypropylene and phosphogypsum), it improves the overall pressure resistance and deformation resistance. 2. This utility model greatly improves the strength and compressive strength of the well ring by setting a first reinforcing rib, a second reinforcing rib and a third reinforcing rib on the outer wall of the well ring body, preventing the well ring from deforming during injection molding and use, and improving the service life of the well ring. 3. This utility model provides support pads at the bottom of the well ring body, which facilitates the support of the entire well ring. If the well ring body is dropped from a height, the support pads can reduce the impact force, prevent the well ring from deforming and causing appearance defects, and facilitate stacking, thus making it convenient to stack multiple well ring bodies for transportation. 4. The high-strength plastic manhole variable diameter ring of this utility model is lightweight and easy to install, shortening the construction cycle and reducing labor costs. 5. The high-strength plastic manhole variable diameter ring of this utility model has been tested and found to have a load-bearing capacity of over 40kN, exhibiting excellent strength and compressive strength. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a cross-sectional structural diagram of the well ring body, well cover, and well cylinder in some embodiments of this application. Figure 2 This is a top view structural schematic diagram of the well ring body disclosed in some embodiments of this application; Figure 3 This is a cross-sectional structural diagram of the existing technology of well ring body, well cover and well barrel.

[0018] In the picture: 100 - Well ring body; 110 - Upper well ring; 111 - First reinforcing rib; 120 - Lower well ring; 121 - Second reinforcing rib; 122 - Third reinforcing rib; 123 - Support pad; 200 - Support platform; 300-Support base; 400- Manhole Cover; 500-shaft; 600 - Road surface layer; 700 - Road base course. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] The terms "first," "second," "third," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," "third," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0021] The inventive concept of this application is described here: Currently, DN700 manhole covers and DN700 manhole rings are commonly used, with DN800 manhole covers and DN800 manhole rings only used in special circumstances. The price of DN800 manhole covers and DN800 manhole rings is generally more than double that of DN700 manhole covers and DN700 manhole rings. If the outer diameter of the manhole is larger than DN700, only DN800 manhole covers and DN800 manhole rings can be used, which significantly increases costs. Furthermore, while current plastic manhole rings are lightweight, inexpensive, and corrosion-resistant, their insufficient strength and compressive strength make them prone to deformation and cracking under the long-term pressure of heavy objects such as vehicles. This not only affects the service life of the manhole rings but may also pose safety hazards.

[0022] Based on this, the inventor provides a high-strength plastic manhole reducer ring that can accommodate manholes with outer diameters greater than DN700 while using a DN700 manhole cover, greatly reducing construction costs and meeting the diameter reduction requirements of the same manhole in different pipeline systems. Furthermore, through the design of the overall structure, the strength and compressive strength of the manhole ring are greatly improved, thus extending its service life.

[0023] The following is in conjunction with the appendix Figures 1 to 3 This application provides a detailed description of a high-strength plastic inspection well variable diameter well ring through specific embodiments and application scenarios.

[0024] Reference Figure 1 and Figure 2 A high-strength plastic manhole variable diameter ring includes: a ring body 100, the longitudinal section of the ring body 100 is convex, the ring body 100 includes an upper ring 110 and a lower ring 120, the inner diameter of the lower ring 120 is larger than the inner diameter of the upper ring 110.

[0025] Specifically, the upper manhole ring 110 is matched with a DN700 manhole cover 400, and the lower manhole ring 120 is matched with a manhole 500 with an outer diameter greater than DN700. The line connecting the inner walls of the upper manhole ring 110 and the lower manhole ring 120 is a zigzag (similar to a Z-shape) structure, presenting an overall convex shape. This greatly improves the adaptability of the manhole ring and solves the problem in the prior art that when the outer diameter of the manhole 500 is greater than DN700, only DN800 manhole covers 400 and DN800 manhole rings can be used, which would cause a significant increase in cost. This meets the diameter variation requirements of the same inspection manhole in different pipeline systems, reduces the inventory of accessories and construction costs, and the convex shape structure makes the manhole ring body 100 form a natural load-bearing step, resulting in more even stress distribution. Combined with high-strength plastic material (this utility model mainly uses polypropylene and phosphogypsum), it improves the overall pressure-bearing capacity and deformation resistance. The corresponding manhole ring body 100 can be produced according to the outer diameter of the manhole 500 to meet the user's requirements.

[0026] Among them, reference Figure 1 600 is the surface layer of the road, and 700 is the base layer of the road.

[0027] Among them, reference Figure 1 and Figure 2 In this embodiment, a support platform 200 is provided at the bottom of the upper well ring 110, which is used to support the well cover 400. A support seat 300 is provided at the bottom of the outer wall of the upper well ring 110, and the bottom of the support seat 300 is connected to the lower well ring 120.

[0028] Specifically, the support platform 200 is arranged in a ring shape to provide uniform support for the manhole cover 400, ensuring the stability of the manhole cover 400, preventing tilting and shaking, converting the concentrated load borne by the manhole cover 400 into a uniformly distributed load, reducing local stress, protecting the structure of the manhole 500, extending its service life, and preventing deformation and cracking of the manhole ring; the support base 300 is arranged in a ring shape and closes around the circumference of the upper manhole ring 110, providing a stable ring connection interface, preventing deformation at the diameter change, and forming an integral connection with the lower manhole ring 120 to ensure the integrity of the structure at the diameter change and resist shear force.

[0029] When the manhole cover 400 is placed in the upper manhole ring 110, the top surface of the manhole cover 400 is flush with the top surface of the upper manhole ring 110; when the manhole cylinder 500 is inserted into the lower manhole ring 120, the top surface of the manhole cylinder 500 is in contact with the bottom surface of the support base 300.

[0030] Reference Figure 1 and Figure 2 In this embodiment, the inner diameter of the upper well ring 110 matches the outer diameter of the well cover 400, and the inner diameter of the lower well ring 120 matches the outer diameter of the well barrel 500, so that the whole is formed into two seamless sections, ensuring that each component is coaxial and has the same stress surface. The standardized adaptation reduces construction and maintenance costs and is suitable for large-scale engineering applications.

[0031] Specifically, the inner diameter of the upper manhole ring 110 is strictly matched with the outer diameter of the manhole cover 400. This precise matching prevents the manhole cover 400 from shaking or shifting, eliminates abnormal noises caused by vehicles running over it, and, together with the support platform 200, distributes the concentrated force to the entire manhole ring, preventing cracking of the manhole ring caused by local stress concentration. The inner diameter of the lower manhole ring 120 is precisely matched with the outer diameter of the manhole cylinder 500, ensuring that the lower manhole ring 120 and the manhole cylinder 500 are aligned on the axis, avoiding increased drainage resistance or uneven stress on the pipe interface. The tight fit also improves the pull-out and shear resistance of the socket connection, preventing the manhole cylinder 500 from separating from the lower manhole ring 120.

[0032] Reference Figure 1 and Figure 2 In this embodiment, a plurality of first reinforcing ribs 111 are uniformly arranged on the outer circumferential direction of the upper well ring 110.

[0033] Specifically, by setting multiple first reinforcing ribs 111, the circumferential stiffness of the upper manhole ring 110 is improved, significantly enhancing the manhole ring's resistance to external pressure. This transforms concentrated stress into distributed load-bearing capacity, avoiding cracking caused by localized stress concentration. Furthermore, it makes the stress distribution of the upper manhole ring 110 in the diameter transition area more uniform, alleviating the problem of sudden stress changes at the diameter change point. It effectively absorbs external impact forces, reduces vibration transmission, extends service life, prevents cracking at the diameter change point caused by stress concentration, extends the service life of the manhole, and facilitates cooperation with the road surface layer 600 to form a better interlocking effect, reducing the risk of uneven settlement.

[0034] Reference Figure 1 and Figure 2 In this embodiment, the plurality of first reinforcing ribs 111 include a plurality of reinforcing ribs with rectangular longitudinal sections and a plurality of reinforcing ribs with triangular longitudinal sections, and the plurality of reinforcing ribs with rectangular longitudinal sections and the plurality of reinforcing ribs with triangular longitudinal sections are spaced apart.

[0035] Specifically, in this embodiment, six rectangular reinforcing ribs are provided to form a continuous circumferential support, distributing concentrated loads into uniform loads, reducing local stress concentration, improving the strength and compressive strength of the well ring, preventing deformation of the well ring during injection molding and use, extending the service life of the well ring, and also serving a positioning and anti-tipping function. When more than ten well rings are stacked, if there are no rectangular reinforcing ribs on the outer wall, the upper well ring 110 is very likely to deform, causing the stacked well rings to tip over. If all the first reinforcing ribs 111 are triangular in cross-section, the anti-tipping effect will not be achieved. Therefore, it is necessary to provide rectangular reinforcing ribs. The reinforcing ribs allow for stacking of the well rings, facilitating transportation. Six triangular reinforcing ribs are incorporated, utilizing the stability of the triangular structure to enhance the well ring's shear resistance, effectively resisting lateral soil pressure, improving the overall strength and compressive strength of the well ring, preventing deformation during injection molding and use, and extending its service life. Multiple rectangular and triangular reinforcing ribs are spaced apart to form a regular three-dimensional grid, creating a three-dimensional composite support structure with the convex-shaped well ring body 100. This strengthens the transition zone between diameters and enhances circumferential, axial, and radial stiffness, thereby increasing the load-bearing capacity of the well ring body 100.

[0036] Reference Figure 1 and Figure 2 In this embodiment, a plurality of second reinforcing ribs 121 are uniformly arranged on the outer circumference of the lower well ring 120, and the longitudinal section of the second reinforcing ribs 121 is rectangular.

[0037] Specifically, in this embodiment, 24 second reinforcing ribs 121 are provided to form a regular support network, providing planar bending resistance, significantly improving the circumferential stiffness of the lower manhole ring 120, resisting the lateral pressure of the surrounding soil, and the second reinforcing ribs 121 form a better interlocking effect with the road base layer 700, reducing the risk of uneven settlement, dispersing concentrated loads into uniform loads, reducing local stress concentration, improving the strength and compressive performance of the manhole ring, strengthening the structural continuity at the diameter change, preventing cracks caused by stress concentration, reducing pipe joint damage and leakage caused by settlement, reducing maintenance frequency, and preventing deformation of the manhole ring during injection molding and use, thus improving the service life of the manhole ring.

[0038] Reference Figure 1 and Figure 2 In this embodiment, a plurality of third reinforcing ribs 122 are provided on the outer wall of the lower well ring 120 along its axial direction, and the cross-section of the third reinforcing ribs 122 is arranged in a ring shape.

[0039] Specifically, in this embodiment, two third reinforcing ribs 122 are provided, which orthogonally form a grid structure with the second reinforcing rib 121 and form a spatial truss with the first reinforcing rib 111 of the upper well ring 110. This provides strong axial support stiffness, effectively resists soil lateral pressure, effectively disperses the concentrated load transmitted by the upper structure, evens out stress distribution, prevents local crushing, and forms a rigid transition zone at the diameter change point to ensure smooth transmission of axial force and avoid structural failure caused by stress mutation. In addition, the third reinforcing rib 122 forms a mechanical interlock with the road base layer 700, which increases frictional resistance, reduces the risk of uneven settlement, and prevents the well cylinder 500 from collapsing and deforming, reduces pipe interface damage and leakage caused by settlement, and lowers the maintenance frequency.

[0040] Reference Figure 1 In this embodiment, a support pad 123 is provided at the bottom of the lower well ring 120, and the longitudinal section of the support pad 123 is convex.

[0041] Specifically, by setting up the support pad 123, it is convenient to support the entire well ring. If the well ring body 100 is dropped from a height, the support pad 123 can reduce the impact force, prevent the appearance defects caused by the deformation of the well ring, and facilitate stacking, thus making it convenient to stack multiple well ring bodies 100 for transportation. Without the support pad 123, that is, the lower part of the lower well ring 120 is set with a straight wall, it is very easy to cause the straight wall to deform under the action of impact force, and it is also easy to cause the straight wall to deform during the stacking process, affecting the fit between the lower well ring 120 and the well cylinder 500. Moreover, the convex shape provides strong bending resistance, effectively resisting the bending stress caused by uneven settlement of the foundation.

[0042] The support pad 123, the second reinforcing rib 121, the third reinforcing rib 122 and the first reinforcing rib 111 form a three-dimensional support system, which improves the overall load-bearing capacity and compressive strength. The support pad 123 is responsible for vertical load bearing and stability, the second reinforcing rib 121 enhances axial stiffness, the third reinforcing rib 122 improves circumferential stiffness, and the first reinforcing rib 111 strengthens the structure at the diameter change, achieving isotropic reinforcement. While improving stiffness, it maintains toughness, effectively resists impact loads, and significantly reduces the overall construction and maintenance costs.

[0043] Reference Figure 1 In this embodiment, the upper well ring 110 and the lower well ring 120 are integrated.

[0044] Specifically, the upper well ring 110, lower well ring 120, first reinforcing rib 111, second reinforcing rib 121, third reinforcing rib 122, and support pad 123 are integrally injection molded, eliminating the weak points of the split connection, avoiding the stress concentration problem at the diameter change of the spliced ​​well ring, adapting to the material characteristics of high-strength plastic, strengthening the overall rigidity, force transmission efficiency and sealing performance, and improving the overall load-bearing capacity and positioning accuracy; and reducing the number of parts, eliminating the need for on-site assembly of the upper well ring 110 and lower well ring 120, reducing human error and construction costs.

[0045] In summary, this utility model uses an upper manhole ring 110 to match a DN700 manhole cover 400, and a lower manhole ring 120 to match a manhole 500 with an outer diameter greater than DN700. The connection between the inner walls of the upper manhole ring 110 and the lower manhole ring 120 is a zigzag (similar to a Z-shape) structure, presenting an overall convex shape. This greatly improves the adaptability of the manhole ring and solves the problem in the prior art where, when the outer diameter of the manhole 500 is greater than DN700, only DN800 manhole covers 400 and DN800 manhole rings can be used, which would cause a significant increase in cost. This model meets the diameter variation requirements of the same inspection manhole in different pipeline systems, reduces parts inventory and construction costs, and the convex shape allows the manhole ring body 100 to form a natural load-bearing step, resulting in more even stress distribution. Combined with high-strength plastic materials (mainly polypropylene and phosphogypsum in this utility model), it enhances the overall pressure resistance and deformation resistance. The manhole ring body 100 can be produced according to the outer diameter of the manhole 500 to meet the user's requirements.

[0046] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0047] Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0048] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A high-strength plastic inspection well reducing ring, characterized in that, include: The well ring body (100) has a longitudinal section in the shape of a convex shape. The well ring body (100) includes an upper well ring (110) and a lower well ring (120). The inner diameter of the lower well ring (120) is larger than the inner diameter of the upper well ring (110).

2. The high-strength plastic inspection well reducing ring according to claim 1, characterized in that, The outer wall of the upper well ring (110) is uniformly provided with a plurality of first reinforcing ribs (111) in the circumferential direction.

3. The high-strength plastic inspection well reducing ring according to claim 2, characterized in that, The plurality of first reinforcing ribs (111) include a plurality of reinforcing ribs with rectangular longitudinal sections and a plurality of reinforcing ribs with triangular longitudinal sections, with the plurality of reinforcing ribs with rectangular longitudinal sections and the plurality of reinforcing ribs with triangular longitudinal sections spaced apart.

4. The high-strength plastic inspection well reducing ring according to claim 1, characterized in that, The outer wall of the lower well ring (120) is uniformly provided with a plurality of second reinforcing ribs (121) in the circumferential direction, and the longitudinal section of the second reinforcing ribs (121) is rectangular.

5. The high-strength plastic inspection well reducing ring according to claim 4, characterized in that, Multiple third reinforcing ribs (122) are provided along the axial direction on the outer wall of the lower well ring (120), and the cross-section of the third reinforcing ribs (122) is arranged in a ring shape.

6. The high-strength plastic manhole reducer ring according to claim 5, characterized in that, The bottom of the lower well ring (120) is provided with a support pad (123), and the longitudinal section of the support pad (123) is convex.

7. The high-strength plastic inspection well reducing ring according to claim 3, characterized in that, The upper well ring (110) is provided with a support platform (200) at the bottom, which is used to support the well cover (400). The upper well ring (110) is provided with a support seat (300) at the bottom of its outer wall, and the bottom of the support seat (300) is connected to the lower well ring (120).

8. The high-strength plastic manhole reducer ring according to claim 7, characterized in that, The inner diameter of the upper well ring (110) matches the outer diameter of the well cover (400), and the inner diameter of the lower well ring (120) matches the outer diameter of the well shaft (500).

9. The high-strength plastic manhole reducer ring according to claim 1, characterized in that, The upper well ring (110) and the lower well ring (120) are integrated into one unit.

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