High-strength resin prefabricated part for inspection well adjusting part

By designing the structure and material combination of high-strength resin prefabricated components, the problem of low strength of manhole resin prefabricated components was solved, achieving stable connection and high compressive strength, thus ensuring the stability and service life of manhole covers.

CN224173374UActive Publication Date: 2026-04-28GATE CASTING QINGDAO
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GATE CASTING QINGDAO
Filing Date
2025-05-09
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

The existing manhole resin precast components are not strong and are easily damaged during long-term use.

Method used

It adopts a high-strength resin prefabricated component consisting of a bearing ring body, an inner lining sleeve, an outer covering sleeve, a manhole cover limiting ring, an embedded reinforcing skeleton, and reinforcing ribs. It combines phenolic epoxy resin, bisphenol S epoxy resin and liquid crystal epoxy resin blended materials and quartz sand filler to enhance the nested structure of glass fiber mesh rings and mesh sheets, forming an integrated molding structure.

Benefits of technology

It improves the connection stability and overall load-bearing capacity of the manhole resin prefabricated components, enhances compressive strength, reduces internal stress, avoids delamination, and ensures stable connection of the manhole cover.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of inspection wells, and discloses a high-strength resin prefabricated part for an inspection well adjusting part, which solves the problem of low strength of the existing inspection well resin prefabricated part, and comprises a prefabricated adjusting ring body, the prefabricated adjusting ring body is composed of a bearing ring main body, a lining sleeve, an outer wrapping sleeve, a well lid limiting ring, an embedded reinforcing framework and reinforcing convex ribs, the lining sleeve and the outer wrapping sleeve are connected to the bottom end of the bearing ring main body, and the well lid limiting ring is connected to the top end of the bearing ring main body; the embedded reinforcing framework is embedded into the bearing ring body, the lining sleeve, the outer wrapping sleeve and the well lid limiting ring, the reinforcing protruding ribs are connected to the bearing ring body and the inner wall of the lining sleeve, and the embedded reinforcing framework is composed of a first glass fiber mesh ring, a second glass fiber mesh ring, a third glass fiber mesh ring, a fourth glass fiber mesh ring and glass fiber meshes. By means of the resin prefabricated part, the self-strength can be improved, meanwhile, the connection stability can be improved, and the service life is prolonged.
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Description

Technical Field

[0001] This utility model belongs to the field of manhole technology, specifically a high-strength resin preform for manhole adjustment parts. Background Technology

[0002] Road renovations or foundation settlement can easily lead to inconsistencies between manhole heights and road surfaces. It is necessary to adjust the manhole opening to be level with the road surface by raising the foundation or lowering the manhole base to avoid water accumulation or traffic safety hazards. Manhole resin prefabricated components are structures used for adaptive adjustments to manholes. When the manhole opening is low, a resin prefabricated component of appropriate height can be added between the manhole body and the manhole cover to provide support. However, existing resin prefabricated components still suffer from low strength and are easily damaged during prolonged use. Therefore, this application proposes a high-strength resin prefabricated component for manhole adjustment sections. Utility Model Content

[0003] In view of the above situation and to overcome the defects of the prior art, this utility model provides a high-strength resin preform for the adjustment part of the manhole, which effectively solves the problem of low strength of the existing manhole resin preform.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a high-strength resin prefabricated component for a manhole adjustment section, comprising a prefabricated adjustment ring body, wherein the prefabricated adjustment ring body is composed of a bearing ring body, an inner liner sleeve, an outer covering sleeve, a manhole cover limiting ring, an embedded reinforcing skeleton, and reinforcing ribs. The inner liner sleeve is connected to the bottom end of the bearing ring body near the inner wall, the outer covering sleeve is connected to the bottom end of the bearing ring body near the outer wall, the manhole cover limiting ring is connected to the top end of the bearing ring body near the outer wall, the embedded reinforcing skeleton is embedded in the interior of the bearing ring body, the inner liner sleeve, the outer covering sleeve, and the manhole cover limiting ring, and the reinforcing ribs are connected to the inner walls of the bearing ring body and the inner liner sleeve.

[0005] The embedded reinforcing skeleton consists of a first glass fiber mesh ring, a second glass fiber mesh ring, a third glass fiber mesh ring, a fourth glass fiber mesh ring, and several glass fiber mesh sheets. The first, second, third, and fourth glass fiber mesh rings are all located inside the main body of the bearing ring and are arranged from the inside to the outside. The first glass fiber mesh ring extends into the interior of the inner lining sleeve, the third glass fiber mesh ring extends into the interior of the manhole cover limiting ring, and the fourth glass fiber mesh ring extends into the interior of the outer covering sleeve. The glass fiber mesh sheets are located inside the main body of the bearing ring and are evenly arranged along the circumference of the main body of the bearing ring. The glass fiber mesh sheets are connected to the first, second, and third glass fiber mesh rings.

[0006] Preferably, the bearing ring body, inner lining sleeve, outer covering sleeve, manhole cover limiting ring, embedded reinforcing skeleton and reinforcing ribs are integrally formed structures.

[0007] Preferably, the prefabricated adjustment ring body is a blend of phenolic epoxy resin, bisphenol S epoxy resin and liquid crystal epoxy resin, and the interior of the prefabricated adjustment ring body is filled with quartz sand.

[0008] Preferably, the reinforcing rib is composed of several annular ribs and several vertical ribs.

[0009] Preferably, a manhole cover overlap and limiting groove is formed between the manhole cover limiting ring and the main body of the bearing ring.

[0010] Preferably, an annular groove is formed between the main body of the bearing ring, the inner lining sleeve, and the outer covering sleeve.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] (1) In operation, by setting up a prefabricated adjustment ring body consisting of a bearing ring body, an inner lining sleeve, an outer covering sleeve, a manhole cover limiting ring, an embedded reinforcing skeleton and reinforcing ribs, the bottom end of the ring can be fitted onto the top of the manhole body to form an overall covering structure, thereby improving the connection stability with the manhole body and limiting the top manhole cover to improve the connection stability of the manhole cover.

[0013] (2) By setting an embedded reinforcing skeleton composed of a first glass fiber mesh ring, a second glass fiber mesh ring, a third glass fiber mesh ring, a fourth glass fiber mesh ring and several glass fiber mesh sheets, the strength of the prefabricated adjustment ring body can be improved, the delamination phenomenon of the prefabricated adjustment ring body can be avoided, and the overall load-bearing capacity of the prefabricated adjustment ring body can be improved.

[0014] (3) By setting the prefabricated adjustment ring body to be a blend of phenolic epoxy resin, bisphenol S epoxy resin and liquid crystal epoxy resin, and by setting quartz sand filler inside the prefabricated adjustment ring body, the compressive strength of the prefabricated adjustment ring body can be improved and the internal stress reduced. By setting a reinforcing rib composed of several annular ribs and several vertical ribs, the prefabricated adjustment ring body can be further reinforced. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0016] In the attached diagram:

[0017] Figure 1This is a schematic diagram of the high-strength resin prefabricated component used in the adjustment section of a manhole according to this utility model;

[0018] Figure 2 This is a partial structural schematic diagram of the high-strength resin prefabricated component for the adjustment section of a manhole according to this utility model;

[0019] Figure 3 This utility model Figure 2 A magnified view of a section at point A in the middle;

[0020] Figure 4 A top view showing the connection between the glass fiber mesh of this utility model and the first glass fiber mesh ring, the second glass fiber mesh ring, and the third glass fiber mesh ring;

[0021] In the diagram: 1. Prefabricated adjustment ring body; 2. Bearing ring body; 3. Inner lining sleeve; 4. Outer covering sleeve; 5. Manhole cover limiting ring; 6. Embedded reinforcing skeleton; 7. Reinforcing rib; 8. First fiberglass mesh ring; 9. Second fiberglass mesh ring; 10. Third fiberglass mesh ring; 11. Fourth fiberglass mesh ring; 12. Fiberglass mesh sheet; 13. Quartz sand filler; 14. Annular rib; 15. Vertical rib; 16. Manhole cover overlap limiting groove; 17. Annular slot. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Depend on Figures 1 to 4 This invention discloses a high-strength resin prefabricated component for adjusting manholes, comprising a prefabricated adjusting ring body 1. The prefabricated adjusting ring body 1 is composed of a bearing ring body 2, an inner liner sleeve 3, an outer covering sleeve 4, a manhole cover limiting ring 5, an embedded reinforcing skeleton 6, and reinforcing ribs 7. The inner liner sleeve 3 is connected to the bottom end of the bearing ring body 2 near the inner wall, the outer covering sleeve 4 is connected to the bottom end of the bearing ring body 2 near the outer wall, the manhole cover limiting ring 5 is connected to the top end of the bearing ring body 2 near the outer wall, the embedded reinforcing skeleton 6 is embedded in the interior of the bearing ring body 2, the inner liner sleeve 3, the outer covering sleeve 4, and the manhole cover limiting ring 5, and the reinforcing ribs 7 are connected to the inner walls of the bearing ring body 2 and the inner liner sleeve 3.

[0024] During installation, the bearing ring body 2 is installed on the top of the manhole body. At this time, the inner lining sleeve 3 is in contact with the inner wall of the manhole body, and the outer covering sleeve 4 is in contact with the outer wall of the manhole body, thereby achieving overall covering installation and improving the stability of the connection. The manhole cover limiting ring 5 can support and limit the manhole cover base, improving the connection stability of the manhole cover. The embedded reinforcing skeleton 6 and the reinforcing rib 7 can reinforce the prefabricated adjustment ring body 1.

[0025] The embedded reinforcing skeleton 6 is composed of a first glass fiber mesh ring 8, a second glass fiber mesh ring 9, a third glass fiber mesh ring 10, a fourth glass fiber mesh ring 11, and several glass fiber mesh sheets 12. The first glass fiber mesh ring 8, the second glass fiber mesh ring 9, the third glass fiber mesh ring 10, and the fourth glass fiber mesh ring 11 are all located inside the main body of the bearing ring 2 and are arranged from the inside to the outside. The first glass fiber mesh ring 8 extends into the interior of the inner lining sleeve 3, the third glass fiber mesh ring 10 extends into the interior of the manhole cover limiting ring 5, and the fourth glass fiber mesh ring 11 extends into the interior of the outer covering sleeve 4. The glass fiber mesh sheets 12 are located inside the main body of the bearing ring 2 and are evenly arranged along the circumference of the main body of the bearing ring 2. The glass fiber mesh sheets 12 are connected to the first glass fiber mesh ring 8, the second glass fiber mesh ring 9, and the third glass fiber mesh ring 10.

[0026] The first glass fiber mesh 8, the second glass fiber mesh 9, the third glass fiber mesh 10, and the fourth glass fiber mesh 11 are arranged in a nested structure. The glass fiber mesh 12 is used to pull and connect the first glass fiber mesh 8, the second glass fiber mesh 9, and the third glass fiber mesh 10, thereby improving the overall strength of the prefabricated adjustment ring body 1.

[0027] The main body of the bearing ring 2, the inner lining sleeve 3, the outer covering sleeve 4, the manhole cover limiting ring 5, the embedded reinforcing skeleton 6, and the reinforcing rib 7 are all integrally formed structures, and integral forming can further improve strength.

[0028] The prefabricated adjustment ring body 1 is made of a blend of phenolic epoxy resin, bisphenol S epoxy resin and liquid crystal epoxy resin. The interior of the prefabricated adjustment ring body 1 is filled with quartz sand filler 13. By blending phenolic epoxy resin, bisphenol S epoxy resin and liquid crystal epoxy resin, the molecular crosslinking density and mechanical properties can be significantly improved, forming a self-reinforcing structure. The quartz sand filler 13 can adjust the fluidity and improve the compressive strength, and reduce the internal stress.

[0029] The reinforcing rib 7 is composed of several annular ribs 14 and several vertical ribs 15, which can achieve further reinforcement;

[0030] A manhole cover overlap limiting groove 16 is formed between the manhole cover limiting ring 5 and the bearing ring body 2, which can limit the installation of the manhole cover;

[0031] An annular groove 17 is formed between the main body 2 of the bearing ring, the inner lining sleeve 3, and the outer covering sleeve 4, which can be engaged with the main body of the manhole to improve the connection stability.

[0032] In operation, by setting up a prefabricated adjustment ring body consisting of a bearing ring main body, an inner lining sleeve, an outer covering sleeve, a manhole cover limiting ring, an embedded reinforcing skeleton, and reinforcing ribs, its bottom end can be fitted onto the top of the manhole body to form an integral covering structure. This improves the connection stability with the manhole body and simultaneously limits the top manhole cover, enhancing its connection stability. Furthermore, by setting up an embedded reinforcing ring consisting of a first fiberglass mesh ring, a second fiberglass mesh ring, a third fiberglass mesh ring, a fourth fiberglass mesh ring, and several fiberglass mesh sheets, the adjustment ring can be further reinforced. A strong frame enhances the inherent strength of the precast adjustment ring, prevents delamination, and improves its overall load-bearing capacity. By using a blend of phenolic epoxy resin, bisphenol S epoxy resin, and liquid crystal epoxy resin, and incorporating quartz sand filler within the precast adjustment ring, the compressive strength and internal stress of the precast adjustment ring are increased. Furthermore, reinforcing ribs, consisting of several annular and vertical ribs, further strengthen the precast adjustment ring.

Claims

1. A high-strength resin precast component for manhole adjustment parts, comprising a precast adjustment ring body (1), characterized in that: The prefabricated adjustment ring body (1) is composed of a bearing ring body (2), an inner liner sleeve (3), an outer covering sleeve (4), a manhole cover limiting ring (5), an embedded reinforcing skeleton (6), and reinforcing ribs (7). The inner liner sleeve (3) is connected to the bottom end of the bearing ring body (2) near the inner wall. The outer covering sleeve (4) is connected to the bottom end of the bearing ring body (2) near the outer wall. The manhole cover limiting ring (5) is connected to the top end of the bearing ring body (2) near the outer wall. The embedded reinforcing skeleton (6) is embedded in the interior of the bearing ring body (2), the inner liner sleeve (3), the outer covering sleeve (4), and the manhole cover limiting ring (5). The reinforcing ribs (7) are connected to the inner walls of the bearing ring body (2) and the inner liner sleeve (3). The embedded reinforcing skeleton (6) is composed of a first glass fiber mesh (8), a second glass fiber mesh (9), a third glass fiber mesh (10), a fourth glass fiber mesh (11), and several glass fiber mesh sheets (12). The first glass fiber mesh (8), the second glass fiber mesh (9), the third glass fiber mesh (10), and the fourth glass fiber mesh (11) are all located inside the main body of the bearing ring (2) and are arranged from the inside to the outside. The first glass fiber mesh (8) extends to the inside of the inner lining sleeve (3), the third glass fiber mesh (10) extends to the inside of the manhole cover limiting ring (5), and the fourth glass fiber mesh (11) extends to the inside of the outer covering sleeve (4). The glass fiber mesh sheets (12) are located inside the main body of the bearing ring (2) and are evenly arranged along the circumference of the main body of the bearing ring (2). The glass fiber mesh sheets (12) are connected to the first glass fiber mesh (8), the second glass fiber mesh (9), and the third glass fiber mesh (10).

2. The high-strength resin precast component for manhole adjustment section according to claim 1, characterized in that: The main body (2), inner lining sleeve (3), outer covering sleeve (4), well cover limiting ring (5), embedded reinforcing skeleton (6) and reinforcing rib (7) are integral molded structures.

3. A high-strength resin precast component for manhole adjustment parts according to claim 1, characterized in that: The prefabricated adjustment ring body (1) is a blend of phenolic epoxy resin, bisphenol S epoxy resin and liquid crystal epoxy resin, and the interior of the prefabricated adjustment ring body (1) is filled with quartz sand filler (13).

4. A high-strength resin precast component for manhole adjustment parts according to claim 1, characterized in that: The reinforcing rib (7) is composed of several annular ribs (14) and several vertical ribs (15).

5. A high-strength resin precast component for manhole adjustment parts according to claim 1, characterized in that: The manhole cover limiting ring (5) and the bearing ring body (2) form a manhole cover overlapping limiting groove (16).

6. A high-strength resin precast component for manhole adjustment parts according to claim 1, characterized in that: An annular groove (17) is formed between the main body (2) of the bearing ring, the inner lining sleeve (3), and the outer covering sleeve (4).