Hidden well lid anti-falling net structure for municipal engineering
By using a concealed manhole cover anti-fall net structure, which incorporates the anti-fall net body, edge reinforcement frame, and buffer support components, the safety hazards of traditional manhole cover structures are solved, achieving multi-layered protection and convenient maintenance.
Patent Information
- Application Number
- CN202520477223.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-18
AI Technical Summary
Traditional manhole covers are easily damaged, have limited load-bearing capacity, and the independently installed anti-fall nets take up space, lack integrated anti-fall functions and stability, and pose safety hazards.
A concealed manhole cover anti-fall net structure was designed, including an anti-fall net body, an edge reinforcement frame, and a concealed manhole cover. Through the annular mounting grooves of the inner and outer frames and the buffer support components, a multi-layer protection is formed, providing additional support and protection.
It improves the safety of inspection wells, prevents people or objects from falling in, extends the structural life, reduces the risk of tripping, and facilitates maintenance.
Smart Images
Figure CN223880378U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to municipal engineering technical field especially, it is a kind of municipal engineering hidden well lid anti-falling net structure. BACKGROUND
[0002] The inspection well in municipal engineering is an important part of urban infrastructure, used for drainage, sewage discharge and maintenance and management of other underground facilities. However, the traditional inspection well design usually has safety hazards, especially without effective protection measures, pedestrians or objects may accidentally fall into the well, causing serious safety accidents. To address this problem, various forms of anti-falling net structures have appeared on the market. These anti-falling nets are usually installed above the inspection well to provide additional safety protection.
[0003] However, existing anti-falling net products often have design deficiencies, such as: 1) the single cast iron cover plate directly covers the inspection well opening, which has the following problems: 1) the well cover is damaged or displaced, which easily causes the risk of pedestrians falling; 2) the single well cover structure has limited load-bearing capacity and is easily deformed under long-term pressure; 3) the existing anti-falling net is usually installed independently and does not have a cooperative reinforcing effect with the well cover, and occupies space inside the well. In view of the above defects, there is an urgent need for a well cover that integrates anti-falling function, stable structure and is easy to maintain. SUMMARY
[0004] The utility model aims to provide a kind of municipal engineering hidden well lid anti-falling net structure to solve the problems raised in the background art.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of municipal engineering hidden well lid anti-falling net structure, including anti-falling net body, the edge reinforcing frame located at the upper side of anti-falling net body and the hidden well cover located above anti-falling net body, the edge reinforcing frame is welded by inner frame, outer frame, cover plate and bottom plate, wherein annular mounting groove is formed between inner frame and outer frame, the width of mounting groove is greater than the material width of anti-falling net body, and matches the width of cover plate, the height difference of inner frame and outer frame is equal to the thickness of cover plate, and the interrupted part of inner frame is provided with multiple gaps, the gap width is greater than the material width of anti-falling net body;
[0006] The edge of the anti-falling net body is fixed between the mounting groove of the inner frame and the outer frame and passes through the gap between the inner frames, and is installed on the bottom plate of the edge reinforcing frame, the hidden well cover is embedded in the anti-falling net body inside the inner frame of the edge reinforcing frame, and is flush with the road surface above the hidden well cover.
[0007] Preferably, the inspection well is arranged below the falling prevention net body and the edge reinforcing frame, and the inspection well is provided with a roadbed and a base layer on the periphery.
[0008] Preferably, the falling prevention net body is a steel bar welded mesh, and the falling prevention net body is internally provided with a rectangular middle frame part.
[0009] Preferably, the four corners of the middle frame part are connected and supported by the buffer support parts and the inner wall of the inspection well.
[0010] Preferably, the buffer support parts comprise a support inclined rod fixed to each corner of the middle frame part and an air spring part fixed to the bottom end of the support inclined rod.
[0011] Preferably, the air spring part is fixedly connected to the inner wall of the inspection well at the end away from the support inclined rod. The support inclined rod supports the falling prevention net body, prevents the middle frame part from sinking due to pressure in the middle region of the falling prevention net body, and prevents the falling prevention net body from falling. The air spring part is designed to support and buffer the support inclined rod, thereby better supporting the falling prevention net body.
[0012] Preferably, the falling prevention net body is composed of hot-dip galvanized steel bars each having a diameter of 6-10 mm, and the grid unit size is 80*80 mm to 200*200 mm.
[0013] Preferably, the inner frame, the outer frame and the outer surface of the bottom plate are provided with an epoxy resin anticorrosive coating.
[0014] Preferably, the cover plate part is of an openable structure and is connected in a hinged manner on the top of the inner frame and the outer frame.
[0015] Preferably, the interrupted gaps of the inner frame are evenly distributed in the circumferential direction, and the number of gaps on each side is 3-10, and the length of each gap is 100-200 mm.
[0016] Compared with the prior art, the technical effects and advantages of the utility model are as follows:
[0017] The municipal engineering hidden well lid anti-falling net structure provides the first line of defense to prevent personnel or objects from accidentally falling into the inspection well, the edge reinforcing frame serves as the second line of defense to provide additional support and protection to prevent the anti-falling net body from being deformed or damaged due to external pressure, and the hidden well lid serves as the third line of defense, not only playing an aesthetic role, but also effectively preventing pedestrians from tripping, the annular mounting groove design between the inner frame and the outer frame ensures the firmness and stability of the anti-falling net body, the interrupted gap design of the inner frame facilitates the installation and replacement of the anti-falling net body, while providing additional ventilation and drainage channels, and the design of the hidden well lid flush with the road surface is not only beautiful but also practical, reducing the risk of pedestrians tripping, through multi-level protection design, effectively preventing personnel or objects from accidentally falling into the inspection well, greatly improving the safety of the inspection well.
[0018] The design of the edge reinforcing frame provides additional support and protection to prevent the anti-falling net body from being deformed or damaged due to external pressure, further enhancing safety, and the outer surfaces of the inner frame, outer frame and bottom plate are provided with an epoxy resin corrosion-resistant coating, effectively isolating moisture and chemicals in the external environment to prevent metal materials from rusting and corroding, prolonging the service life of the overall structure.
[0019] The buffer support component includes a support inclined rod and an air spring piece that work together to disperse and absorb pressure from the anti-falling net body, the support inclined rod provides rigid support, while the air spring piece provides elastic buffering to prevent excessive impact force from directly acting on the anti-falling net body. BRIEF DESCRIPTION OF DRAWINGS
[0020] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed in the specific embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.
[0021] Fig. 1 is a schematic view of the present application;
[0022] Fig. 2 is a top view of the anti-falling net body of the present application;
[0023] Fig. 3 is a top view of the edge reinforcing frame of the present application;
[0024] Fig. 4 is a side sectional view of the edge reinforcing frame of the present application.
[0025] BRIEF DESCRIPTION OF DRAWINGS
[0026] In the figure: 1, the falling prevention net body; 2, the edge reinforcing frame; 3, the hidden well lid; 4, the inner frame; 5, the outer frame; 6, the cover plate; 7, the bottom plate; 8, the inspection well; 9, the roadbed; 10, the road surface; 11, the base layer; 12, the middle frame part; 13, the supporting inclined rod; 14, the air spring part. DETAILED DESCRIPTION
[0027] In the following description, a large number of specific details are given to provide a more complete understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without one or more of these details. In other examples, some technical features known in the art are not described to avoid obscuring the present application.
[0028] Unless the direction defined separately is indicated, the up, down, left, right, front, back, inner and outer directions involved in the present application are based on the up, down, left, right, front, back, inner and outer directions in the drawings of the present application, which are explained herein.
[0029] The embodiment provides a municipal engineering hidden well lid falling prevention net structure as shown in the figure. Figs. 1 to 4 The edge reinforcing frame 2 is welded by the inner frame 4, the outer frame 5, the cover plate 6 and the bottom plate 7, wherein an annular mounting groove is formed between the inner frame 4 and the outer frame 5, the width of the mounting groove is greater than the material width of the falling prevention net body 1, and is matched with the width of the cover plate 6, the height difference between the inner frame 4 and the outer frame 5 is equal to the thickness of the cover plate 6, and the interrupted part of the inner frame 4 is provided with multiple gaps, and the gap width is greater than the material width of the falling prevention net body 1.
[0030] The edge of the falling prevention net body 1 is fixed between the mounting groove of the inner frame 4 and the outer frame 5 and passes through the gap between the inner frame 4, is mounted on the bottom plate 7 of the edge reinforcing frame 2, the hidden well lid 3 is embedded on the falling prevention net body 1 inside the inner frame 4 of the edge reinforcing frame 2, and is flush with the road surface 10 above the hidden well lid 3.
[0031] In the embodiment, the falling prevention net body 1 and the edge reinforcing frame 2 are provided below the inspection well 8, the inspection well 8 has a roadbed 9 and a base layer 11 on the side, and the road surface 10 is arranged above the base layer 11.
[0032] In the embodiment, the falling prevention net body 1 is a steel welded mesh, and the falling prevention net body 1 has a rectangular middle frame part 12 inside.
[0033] In this embodiment, the four corners of the intermediate frame part 12 are connected with the inner wall of the inspection well 8 through the buffer support part.
[0034] In this embodiment, the buffer support part includes a support inclined rod 13 fixed to each corner of the intermediate frame part 12 respectively, and an air spring part 14 fixed to the bottom end of the support inclined rod 13.
[0035] In this embodiment, the end of the air spring part 14 away from the support inclined rod 13 is fixedly connected with the inner wall of the inspection well 8. The support inclined rod 13 supports the anti-falling net body 1, preventing the anti-falling net body 1 from sinking in the middle region under pressure, causing the anti-falling net body 1 to fall. The design of the air spring part 14 can support and buffer the support inclined rod 13, thereby better supporting the anti-falling net body 1.
[0036] In this embodiment, the anti-falling net body 1 is composed of hot-dip galvanized steel bars each with a diameter of Φ6-10 mm, and the grid unit size is 80×80 mm to 200×200 mm.
[0037] In this embodiment, the inner frame 4, the outer frame 5, and the outer surface of the bottom plate 7 are all provided with an epoxy resin anti-corrosion coating.
[0038] In this embodiment, the cover plate 6 is of an openable structure and is connected in a hinged manner on the top of the inner frame 4 and the outer frame 5.
[0039] In this embodiment, the interrupted gaps of the inner frame 4 are evenly distributed circumferentially, with 3-10 gaps on each side, and each gap has a length of 100-200 mm.
[0040] Working principle
[0041] The hidden manhole cover anti-falling net structure of the municipal engineering determines the position of the inspection well 8, cleans the surrounding area, ensures the flatness of the roadbed 9 and the base layer 11, embeds the edge reinforcing frame 2 in the structural layer during construction, lays the anti-falling net body 1 on the bottom plate 7 and completes the transverse steel bar insertion locking through the inner frame gap, and finally installs the hidden manhole cover 3 to be flush with the road surface, forming a “frame-anti-falling net-manhole cover” three-force system.
[0042] The hot-dip galvanized steel bars with a diameter of 6-10 mm are welded to form the falling-prevention net body 1 with a grid unit size of 80x80 mm to 200x200 mm. The falling-prevention net body 1 is laid on the bottom plate 7 of the edge reinforcing frame 2, and the edge steel bars of the falling-prevention net body 1 are embedded in the annular mounting groove formed between the inner edge frame 4 and the outer edge frame 5. Since the mounting groove has a width slightly larger than the diameter of the edge steel bars of the falling-prevention net body 1, the edge steel bars can be smoothly embedded. Then, the transverse steel bars of the falling-prevention net body 1 are passed through the 3-10 circumferentially arranged gaps with a width of 100-200 mm of the inner edge frame 4, and the gaps are uniformly distributed along the circumferential direction of the inner edge frame 4, so that the falling-prevention net body 1 and the inner edge frame 4 form a three-dimensional anchoring, and the falling-prevention net body 1 is stably installed in the edge reinforcing frame 2. The concealed manhole cover 3 is embedded in the inner edge frame 4 of the edge reinforcing frame 2 and placed on the installed falling-prevention net body 1. The position of the manhole cover is adjusted so as to be flush with the road surface, and thus the installation of the "frame-falling-prevention net-manhole cover" triple stress system is completed.
[0043] The cover plate device 6 is of an openable structure and is connected to the top of the inner edge frame 4 and the outer edge frame 5 in a hinged manner. During daily maintenance, if it is necessary to inspect or repair the falling-prevention net body 1, the cover plate device 6 only needs to be opened, without damaging the road surface, which greatly facilitates the maintenance work.
[0044] A rectangular intermediate frame part 12 is arranged in the falling-prevention net body 1, and the frame is connected to the inner wall of the inspection well 8 through four corner buffer support parts. The buffer support parts include support inclined rods 13 and air spring parts 14. The support inclined rods 13 are fixed to each corner of the intermediate frame part 12, and the air spring parts 14 are fixed to the bottom end of the support inclined rods 13 and connected to the inner wall of the inspection well 8. This design can effectively disperse the pressure and prevent the falling-prevention net body 1 from sinking or being damaged due to excessive stress.
[0045] It should be noted that, in the present document, relational terms such as one and another and at least one and containing are used solely to distinguish one entity or action from another entity or action, without necessarily requiring or implying that each modified entity or action is essential, or independently useful, or constituting part of the single or multiple entities or actions. And, the terms "comprising", "having", or any other variant are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements is not limited to those elements, but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, nothing in the statement "comprising a list of elements" requires that all or some of the elements in the list are essential.
[0046] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A municipal engineering hidden well lid anti-falling net structure, comprising an anti-falling net body (1), an edge reinforcing frame (2) located on the upper side of the anti-falling net body (1), and a hidden well lid (3) located above the anti-falling net body (1), characterized in that: The edge reinforcing frame (2) is welded by an inner frame (4), an outer frame (5), a cover plate (6) and a bottom plate (7), wherein an annular mounting groove is formed between the inner frame (4) and the outer frame (5), the width of the mounting groove is greater than the material width of the falling arrest net body (1), and matches the width of the cover plate (6), the height difference between the inner frame (4) and the outer frame (5) is equal to the thickness of the cover plate (6), and the interrupted part of the inner frame (4) is provided with multiple gaps, and the gap width is greater than the material width of the falling arrest net body (1). The edge of the falling arrest net body (1) is fixed in the mounting groove between the inner frame (4) and the outer frame (5) and passes through the gap between the inner frame (4), and is mounted on the bottom plate (7) of the edge reinforcing frame (2), the hidden well cover (3) is embedded on the falling arrest net body (1) inside the inner frame (4) of the edge reinforcing frame (2), and is flush with the road surface (10) above the hidden well cover (3).
2. The anti-falling net structure of a hidden manhole cover for municipal works according to claim 1, characterized in that: The falling arrest net body (1) and the edge reinforcing frame (2) are provided below the inspection well (8), the inspection well (8) has a roadbed (9) and a base layer (11) on the side, and the road surface (10) is arranged above the base layer (11).
3. The anti-falling net structure of a hidden manhole cover for municipal works according to claim 2, characterized in that: The falling arrest net body (1) is a reinforced welded mesh, and the falling arrest net body (1) has a rectangular intermediate frame part (12) inside.
4. The anti-falling net structure of a hidden manhole cover for municipal works according to claim 3, characterized in that: The four corners of the intermediate frame part (12) are supported and connected with the inner wall of the inspection well (8) through a buffer support part.
5. The anti-falling net structure of a hidden manhole cover for municipal works according to claim 4, characterized in that: The buffer support part includes a support inclined rod (13) fixed to each corner of the intermediate frame part (12) and an air spring part (14) fixed to the bottom end of the support inclined rod (13).
6. The anti-falling net structure of a hidden manhole cover for municipal works according to claim 5, characterized in that: The end of the air spring part (14) away from the support inclined rod (13) is fixedly connected with the inner wall of the inspection well (8).
7. The anti-falling net structure of a hidden manhole cover for municipal works according to claim 6, characterized in that: The falling arrest net body (1) is composed of each Φ6-10mm hot-dip galvanized steel bar, and the grid unit size is 80×80mm to 200×200mm.
8. The anti-falling net structure of a hidden manhole cover for municipal works according to claim 7, characterized in that: The outer surfaces of the inner frame (4), the outer frame (5) and the bottom plate (7) are provided with an epoxy resin anticorrosive coating.
9. The anti-falling net structure of a hidden manhole cover for municipal works according to claim 8, characterized in that: The cover plate (6) is of an openable structure and is connected in a hinged manner at the top of the inner frame (4) and the outer frame (5).
10. The anti-falling net structure of a hidden manhole cover for municipal works according to claim 9, characterized in that: The interrupted gaps of the inner frame (4) are evenly distributed circumferentially, and the number of each side is 3-10, and the length of each gap is 100-200mm.