Anti-falling device for cellar well
By installing mounting bases and fall arrestor components at the well opening and using connectors and bolts for fastening, the problem of expansion bolts loosening due to dampness inside the well was solved, simplifying construction and improving the stability and safety of the fall arrestor.
Patent Information
- Application Number
- CN202422704902.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-11-06
AI Technical Summary
Existing fall protection devices for manholes experience loosening of expansion bolts in humid environments, leading to a decrease in the safety factor of the fall protection net. The construction process requires drilling holes in the inner wall of the manhole, increasing the complexity of the construction.
The design incorporates a mounting base and fall arrestor components. The mounting base includes a base and annular protrusions, while the fall arrestor components are connected to the annular protrusions via connectors. This simplifies the construction process, avoids drilling holes in the inner wall of the well, and utilizes bolts for fastening, thus enhancing the stability of the cylinder.
It simplifies the construction process, improves the stability of the fall arrest device, avoids the problem of expansion bolts loosening due to humid environments, and enhances safety.
Smart Images
Figure CN223446219U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of safety protection, and particularly relates to a well pit anti-falling device. BACKGROUND
[0002] With the development of cities, underground pipelines have been widely used. Many underground pipelines will be used in city construction, such as sewers, underground gas pipelines, water supply pipelines, power pipelines, communication pipelines and national defense pipelines. These pipelines need an outlet to the ground every certain distance, and the section from the pipeline to the ground is called a well pit. The well pit opening is usually flush with the ground, so a cover is needed to cover the well pit opening. In rainy weather, the well pit cover is usually opened to speed up drainage. When the well pit loses the well pit cover, pedestrians or objects often fall into the well pit cover, which easily causes serious safety hazards. Therefore, an anti-falling device needs to be additionally arranged at the well pit opening. The existing well pit anti-falling device (referring to CN 208593593 U) is provided with a hole punched in the inner wall of the well pit, a hook expansion bolt 5 is arranged in the hole, and a falling prevention net 6 is arranged on the hook expansion bolt 5. However, the humid environment in the well pit will cause erosion of the inner wall of the well pit, so that the expansion bolt is loose, and the safety factor of the falling prevention net is reduced. Figure 1 The utility model discloses a well pit anti-falling device. CONTENT OF THE UTILITY MODEL
[0003] Therefore, the main purpose of the application is to provide a well pit anti-falling device.
[0004] The technical scheme adopted by the application is as follows: a well pit anti-falling device comprises a mounting seat, a falling prevention assembly and a well pit cover.
[0005] The mounting seat is located below the well pit cover, and comprises a base and an annular protrusion. The base is provided with a through hole and is arranged at the upper opening of the well pit. The annular protrusion is connected to the top surface of the base.
[0006] The falling prevention assembly comprises a plug-in part and a falling prevention part. The falling prevention part is arranged inside the plug-in part. The plug-in part is plugged into the annular protrusion.
[0007] Further, the plug-in part comprises a first annular body and a second annular body. The outer diameter of the second annular body is smaller than that of the first annular body. The first annular body and the second annular body are connected to each other to form a structure with a reverse "U" shaped cross section.
[0008] The bottom of the first annular body is provided with a slot matched with the annular protrusion. The slot is located on the plane where the first annular body and the second annular body are connected to each other.
[0009] The second annular body is connected below the first annular body, and the outer surface of the second annular body is matched with the inner surface of the annular protrusion.
[0010] The anti-falling piece is arranged inside the first annular body and connected with the inner end surface of the first annular body.
[0011] Further, the first annular body and the annular protrusion are provided with screw holes corresponding in position, and the first annular body and the annular protrusion are fastened by bolts through the screw holes.
[0012] Further, the lower portion of the base is connected with a cylinder, the cylinder is communicated with the annular protrusion, and the outer surface of the cylinder is attached to the inner surface of the cellar.
[0013] Further, the diameter of the base is greater than the diameter of the annular protrusion.
[0014] Further, the top of the base is provided with a compression ring, the compression ring is connected with the inner wall of the opening of the cellar, and the compression ring is located above the base.
[0015] Compared with the prior art, the present application has the beneficial effects that the mounting seat and the anti-falling assembly are arranged at the opening of the cellar, the installation is realized by inserting the anti-falling assembly into the mounting seat, the process of punching holes in the inner wall of the cellar in the prior art is optimized, the construction process is simplified, and the problem of loosening of the expansion bolts due to the humid environment in the cellar, which leads to the reduction of the safety factor of the anti-falling net, is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0016] The following drawings only schematically illustrate and explain the present application and do not serve to limit the scope of the present application, in which:
[0017] Figure 1 for the cellar anti-falling device in the prior art;
[0018] Figure 2 for the three-dimensional structure schematic diagram of the present application;
[0019] Figure 3 for the exploded structure three-dimensional schematic diagram of the present application;
[0020] Figure 4 for the schematic diagram of one embodiment of the mounting seat in the present application;
[0021] Figure 5 for the cross-sectional structure schematic diagram of the actual application of the present application;
[0022] Figure 6 for Figure 5 the enlarged view of A in
[0023] 10. mounting seat; 11. fall protection assembly; 12. base; 13. annular protrusion; 14. fall protection piece; 15. first annular body; 16. second annular body; 17. insertion slot; 18. threaded hole; 19. cylinder; 20. compression ring; 100. cellar; 200. cellar cover. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical scheme, design method and advantages of the present application more clear, the present application is further described in detail below with specific embodiments in combination with the drawings. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.
[0025] It should be noted that before installing the mounting seat 10, a placing groove for placing the mounting seat 10 needs to be set in advance at the opening of the cellar 100. The placing groove can be made of bricks and concrete, and the mounting seat 10 can be installed after the placing groove is completely solidified. Alternatively, the opening of the cellar 100 can be widened directly to be able to place the mounting seat 10, and the placing groove for placing the mounting seat 10 is also the placing groove of the cellar cover 200.
[0026] Referring to Figures 2 to 6 , the present application provides a cellar fall protection device, which comprises a mounting seat 10, wherein the mounting seat 10 is located below the cellar cover 200, the mounting seat 10 comprises a base 12 and an annular protrusion 13, the base 10 is provided with a through hole, and the base 12 is installed at the upper opening of the cellar 100, and the annular protrusion 13 is connected to the top surface of the base 12.
[0027] A fall protection assembly 11 is inserted into the mounting seat 10, wherein the fall protection assembly 11 comprises an insertion piece and a fall protection piece 14, the fall protection piece 14 is arranged inside the insertion piece, and the insertion piece is inserted into the annular protrusion 13.
[0028] The mounting seat 10 and the fall protection assembly 11 are arranged at the opening of the cellar 100, and the fall protection assembly 11 is inserted into the mounting seat 10 to achieve installation, thereby optimizing the process of punching holes in the inner wall of the cellar 100 in the prior art, simplifying the construction process, and avoiding the problem of reduced safety factor of the fall protection net caused by loosening of the expansion bolts due to the humid environment in the cellar in the prior art.
[0029] As an embodiment of the present application, referring to Figures 2 to 6The plug-in part comprises a first annular body 15 and a second annular body 16, the outer diameter of the second annular body 16 is smaller than that of the first annular body 15, the first annular body 15 and the second annular body 16 are connected to each other to form a structure with an inverted "U" shaped cross section; the bottom of the first annular body 15 is provided with a plug-in slot 17 matched with the annular protrusion 13, the plug-in slot 17 is located on the plane where the first annular body 15 and the second annular body 16 are connected to each other; the second annular body 16 is connected below the first annular body 15, the outer surface of the second annular body 16 is attached to the inner surface of the annular protrusion 13; the anti-falling part 14 is arranged inside the first annular body 15 and connected with the inner end surface of the first annular body 15.
[0030] As an embodiment of the present application, referring to Figures 2 to 6 The first annular body 15 and the annular protrusion 13 are provided with corresponding screw holes 18, the first annular body 15 and the annular protrusion 13 are fastened by matching the screw holes 18 with bolts 21; the bolts 21 can be installed from the inner wall of the first annular body 15 or the outer wall of the first annular body 15.
[0031] As an embodiment of the present application, referring to Figures 2 to 6 The lower part of the base 12 is connected with a cylinder 19, the cylinder 19 is communicated with the annular protrusion 13, the outer surface of the cylinder 19 is attached to the inner surface of the cellar 100; the diameter of the cylinder 19 is equal to the inner diameter of the cellar 100, the cylinder 19 is clamped in the cellar 100, so as to improve the stability of the whole anti-falling device, and even if the inner wall of the cellar 100 is corroded, the cylinder 19 can provide better support for the anti-falling part, and the anti-falling part will not fall off.
[0032] As an embodiment of the present application, referring to Figures 2 to 6 The diameter of the base 12 is greater than that of the annular protrusion 13, so that the first annular body 15 can be plugged into the annular protrusion 13 with sufficient space, and more allowance can be provided for the installation of the bolts.
[0033] As an embodiment of the present application, referring to Figures 2 to 6 The top of the base 12 is provided with a press ring 20, the press ring 20 is connected with the inner wall of the opening of the cellar, and the press ring 20 is located above the base 12; the press ring 20 can be integrally arranged and fixed with the opening of the cellar, so as to press and fix the base 12, and further improve the stability of the anti-falling device.
[0034] Having described various embodiments of the application, it is to be understood that the above description is meant not to limit and not to encompass all of the possible embodiments. Many modifications and variations of this application can be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. It is intended that the scope of the application be defined by the scope of the patent and by the claims as allowed by the patent office, which can include adaptations based on the description, equivalents, and / or substitutions of elements individually or collectively to the entire disclosure.
Claims
1. A pit anti-fall device, characterized in that: include, A mounting seat (10), the mounting seat (10) being located below the pit cover (200), the mounting seat (10) comprising a base (12) and an annular protrusion (13), the base (12) being provided with a through hole and being mounted at the upper opening of the pit (100), the annular protrusion (13) being connected to the top surface of the base (12); An anti-falling component (11) comprises a plug-in component and an anti-falling component (14), wherein the anti-falling component (14) is arranged inside the plug-in component; and the plug-in component is plugged onto the annular protrusion (13).
2. A pit fall prevention device according to claim 1, characterized in that: The connector comprises a first annular body (15) and a second annular body (16), the outer diameter of the second annular body (16) being smaller than the outer diameter of the first annular body (15), and the first annular body (15) and the second annular body (16) being connected to each other to form a structure having an inverted "convex" cross section; The bottom of the first annular body (15) is provided with a slot (17) that matches the annular protrusion (13), and the slot (17) is located on the plane where the first annular body (15) and the second annular body (16) are connected to each other; The outer surface of the second annular body (16) is in contact with the inner surface of the annular protrusion (13); The anti-falling component (14) is arranged inside the first annular body (15) and is connected to the inner end surface of the first annular body (15).
3. A pit fall prevention device according to claim 2, characterized in that: The first annular body (15) and the annular protrusion (13) are provided with screw holes (18) at corresponding positions, and the first annular body (15) and the annular protrusion (13) are fastened by bolts (21) through the screw holes (18).
4. The pit fall prevention device according to claim 1, characterized in that: A cylinder (19) is connected below the base (12), the cylinder (19) is communicated with the annular protrusion (13), and the outer surface of the cylinder (19) is in contact with the inner surface of the pit (100).
5. The pit fall prevention device according to claim 1, characterized in that: The diameter of the base (12) is greater than the diameter of the annular protrusion (13).
6. The pit fall prevention device according to claim 1, characterized in that: A pressure ring (20) is provided on the top of the base (12), and the pressure ring (20) is connected to the inner wall of the opening of the pit.