Shaft anti-falling net

Abstract

The utility model discloses a shaft anti-falling net, relates to the technical field of inspection well anti-falling net installation, solves the problem that an anti-falling net is inconvenient to connect with a plurality of expansion bolt hooks, and comprises a concrete walling crib, and an annular groove used for installing a well lid is formed in the top of the concrete walling crib. A plurality of pipe sleeves arranged in an annular array mode are embedded in the inner bottom wall of the annular groove, an anti-falling net assembly is installed in the annular groove, inserting rods corresponding to the pipe sleeves are fixedly installed at the bottom of the anti-falling net assembly, and the inserting rods are inserted into the pipe sleeves. According to the utility model, the insertion rod at the bottom of the anti-falling net assembly is inserted into the pipe sleeve in the concrete well ring, so that the installation of the anti-falling net assembly can be realized, the connection mode that a net body of the anti-falling net is hung on a hook of an expansion bolt in the prior art is changed, and the installation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of manhole anti-fall net installation, and in particular to a manhole anti-fall net. Background Technology

[0002] Inspection wells are installed for the maintenance of urban underground infrastructure such as power supply, water supply, drainage, sewage, communications, cable television, gas pipes, and street light lines. They are generally located at pipe intersections, bends, changes in pipe diameter or slope, and at regular intervals along straight pipe sections to facilitate periodic inspections of ancillary structures. Because there is a risk of people falling into inspection wells, fall protection nets are usually installed inside to prevent accidental falls.

[0003] Currently, common fall protection nets are usually fixed directly to the side wall of the well shaft using multiple expansion bolt hooks, and then the fall protection net is hung on the expansion bolt hooks. However, because the fall protection net itself is relatively soft, and it is necessary to connect the fall protection net to multiple expansion bolt hooks, the operation is very inconvenient.

[0004] Therefore, a well shaft fall prevention net is proposed. Utility Model Content

[0005] To address the inconvenience of connecting the fall arrest net to multiple expansion bolt hooks, this utility model provides a well shaft fall arrest net.

[0006] This utility model provides a well shaft fall protection net, which adopts the following technical solution:

[0007] A well casing anti-fall net includes a concrete well ring, the top of which has an annular groove for installing a well cover. Several sleeves arranged in a circular array are embedded in the inner bottom wall of the annular groove. An anti-fall net assembly is installed inside the annular groove. A corresponding insert rod is fixedly installed at the bottom of the anti-fall net assembly and is inserted into the inside of the sleeve.

[0008] By adopting the above technical solution, the anti-fall net assembly can be installed by inserting the bottom rod of the anti-fall net assembly into the sleeve inside the concrete well ring. This changes the connection method of the anti-fall net body hanging on the expansion bolt hook in the existing technology, which is conducive to improving installation efficiency.

[0009] Optionally, the fall arrestor assembly includes a bottom ring, a mounting ring, a fall arrestor net, and a fixing ring. The bottom ring is installed inside the annular groove. The top of the insert rod is fixedly connected to the bottom of the bottom ring. An annular mounting groove is formed on the upper surface of the bottom ring. The mounting ring is located inside the annular mounting groove. The periphery of the fall arrestor net is fixedly connected to the inner wall of the mounting ring. A fixing ring is detachably installed on the top of the bottom ring. The mounting ring is located between the bottom ring and the fixing ring.

[0010] By adopting the above technical solutions, the fall-prevention net has played a good protective role for people falling into wells.

[0011] Optionally, a plurality of vertical rods arranged in a circular array are fixedly installed on the inner bottom wall of the annular mounting groove. The mounting ring has through holes adapted to the vertical rods. The vertical rods are inserted into the through holes. A buffer spring is installed between the mounting ring and the inner bottom wall of the annular mounting groove. The buffer spring is fitted onto the surface of the vertical rod.

[0012] By adopting the above technical solution and setting the buffer spring, the buffer spring can play a good buffering role when the fall protection net is subjected to instantaneous impact, making it less likely to be damaged by excessive force, which is conducive to the long-term use of the fall protection net.

[0013] Optionally, the fixing ring and the bottom ring are fixedly connected by bolts.

[0014] By adopting the above technical solution, the fixed ring and the bottom ring are connected in a detachable manner, which facilitates the assembly and disassembly of the fixed ring and the bottom ring. Furthermore, it is beneficial to disassemble and assemble the installation ring, thereby facilitating the replacement of damaged fall protection nets.

[0015] Optionally, the upper surface of the fixing ring is provided with a mounting groove, and a fluorescent ring is fixedly installed inside the mounting groove.

[0016] By adopting the above technical solution and setting the fluorescent ring, the overall display effect of the device at night is improved, which plays a good warning role.

[0017] Optionally, the fall protection net is woven from polyester industrial yarn or polypropylene high-strength yarn.

[0018] By adopting the above technical solution, and utilizing the high strength, light weight, and high breaking strength of polypropylene high-strength yarn, a fall protection net with high safety factor requirements can be made.

[0019] Optionally, four handles arranged in a circular array are fixedly installed on the inner sidewall of the fixing ring.

[0020] By adopting the above technical solution and the addition of a handle, it is convenient for workers to remove the entire fall protection net assembly from inside the annular groove, thereby facilitating subsequent well inspection work.

[0021] Optionally, a pull rope is tied to the edge of the fall protection net, and the other end of the pull rope is tied to a handle.

[0022] By adopting the above technical solution, the installation of the pull rope provides a certain pulling effect on the fall protection net. Therefore, if the fall protection net breaks on one side, the presence of the pull rope helps to improve the protection of people falling into the well.

[0023] In summary, this utility model has the following beneficial effects:

[0024] 1. This utility model achieves the installation of the fall protection net assembly by inserting the bottom rod of the fall protection net assembly into the sleeve inside the concrete well ring, thereby changing the connection method of the fall protection net body hanging on the expansion bolt hook in the prior art, which is conducive to improving installation efficiency;

[0025] 2. This utility model has a buffer spring installed between the mounting ring and the bottom ring. When the fall protection net is subjected to instantaneous impact, the buffer spring can play a good buffering role, which makes it less likely for the fall protection net to be damaged by excessive force, and is conducive to the long-term use of the fall protection net. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the main cross-sectional structure of this utility model.

[0027] Figure 2 This is a top view schematic diagram of the bottom ring structure of this utility model.

[0028] Figure 3 This is a top view of the mounting ring structure of this utility model.

[0029] Figure 4 This is a top view of the fixed ring structure of this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Concrete well ring; 2. Annular groove; 3. Pipe sleeve; 4. Insert rod; 5. Bottom ring; 6. Mounting ring; 7. Fall protection net; 8. Fixing ring; 9. Vertical rod; 10. Through hole; 11. Buffer spring; 12. Bolt; 13. Fluorescent ring; 14. Handle; 15. Pull rope; 16. Annular mounting groove. Detailed Implementation

[0032] The following description, in conjunction with the embodiments of this utility model, includes appendices. Figure 1-4 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] Please refer to Figure 1A well casing anti-fall net includes a concrete well ring 1. The top of the concrete well ring 1 has an annular groove 2 for installing a well cover. Several pipe sleeves 3 arranged in a circular array are embedded in the inner bottom wall of the annular groove 2. The pipe sleeves 3 are made of stainless steel. An anti-fall net assembly is installed inside the annular groove 2. The bottom of the anti-fall net assembly is fixedly installed with a corresponding insertion rod 4. The insertion rod 4 is inserted into the inside of the pipe sleeve 3. By inserting the insertion rod 4 at the bottom of the anti-fall net assembly into the pipe sleeve 3 inside the concrete well ring 1, the anti-fall net assembly can be installed. This changes the connection method of the anti-fall net body hanging on the expansion bolt hook in the prior art, which is conducive to improving installation efficiency.

[0034] Reference Figure 2-4 The fall arrestor net assembly includes a bottom ring 5, an mounting ring 6, a fall arrestor net 7, and a fixing ring 8. The bottom ring 5 is installed inside the annular groove 2, and its outer diameter matches the outer diameter of the annular groove 2. The top of the insert rod 4 is fixedly connected to the bottom of the bottom ring 5. An annular mounting groove 16 is formed on the upper surface of the bottom ring 5, and the mounting ring 6 is located inside the annular mounting groove 16. The periphery of the fall arrestor net 7 is fixedly connected to the inner wall of the mounting ring 6. The fall arrestor net 7 is woven from polyester industrial yarn or polypropylene high-strength yarn. Utilizing the high strength, light weight, and high tensile strength of polypropylene high-strength yarn, it can be used to manufacture fall arrestor nets with high safety requirements. A fixing ring 8 is detachably installed on the top of the bottom ring 5, and the mounting ring 6 is located between the bottom ring 5 and the fixing ring 8. The fixing ring 8 is fixedly connected to the bottom ring 5 by bolts 12. The fixing ring 8 and the bottom ring 5 are detachably connected, facilitating the assembly and disassembly of the fixing ring 8 and the bottom ring 5. Furthermore, this facilitates the assembly and disassembly of the mounting ring 6, thereby making it easier to replace damaged fall arrestor net 7. The upper surface of the fixing ring 8 is provided with a mounting groove, and a fluorescent ring 13 is fixedly installed inside the mounting groove. The setting of the fluorescent ring 13 improves the display effect of the entire device at night and plays a good warning role.

[0035] Reference Figure 1 and Figure 2 A number of vertical rods 9 arranged in a circular array are fixedly installed on the inner bottom wall of the annular mounting groove 16. The mounting ring 6 has through holes 10 that are adapted to the vertical rods 9. The vertical rods 9 are inserted into the through holes 10. A buffer spring 11 is installed between the mounting ring 6 and the inner bottom wall of the annular mounting groove 16. The buffer spring 11 is fitted on the surface of the vertical rods 9. With the setting of the buffer spring 11, when the fall protection net 7 is subjected to instantaneous impact, the buffer spring 11 can play a good buffering role, making it less likely for the fall protection net 7 to be damaged by excessive force, which is conducive to the long-term use of the fall protection net 7.

[0036] Reference Figure 1 , Figure 3 and Figure 4Four handles 14 arranged in a circular array are fixedly installed on the inner wall of the fixing ring 8. The handles 14 facilitate the removal of the entire fall protection net assembly from the inside of the annular groove 2 by the workers, thereby facilitating subsequent inspection work in the well. A pull rope 15 is tied to the edge of the fall protection net 7, and the other end of the pull rope 15 is tied to the handle 14. When the pull rope 15 is connected to the handle 14, the pull rope 15 has a certain degree of slack. Alternatively, the pull rope 15 can be replaced with an elastic connecting rope. The pull rope 15 provides a certain pulling force on the fall protection net 7, so that if one side of the fall protection net 7 breaks, the presence of the pull rope 15 helps to improve the protection of personnel falling into the well.

[0037] The implementation principle of this utility model is as follows: In use, the anti-fall net assembly can be installed by inserting the bottom rod 4 of the anti-fall net assembly into the sleeve 3 inside the concrete well ring 1. This changes the connection method of the anti-fall net body hanging on the expansion bolt hook in the prior art, which is conducive to improving installation efficiency. Moreover, a buffer spring 11 is installed between the installation ring 6 and the bottom ring 5. When the anti-fall net 7 is subjected to instantaneous impact, the buffer spring 11 can play a good buffering role, which makes it less likely for the anti-fall net 7 to be damaged by excessive force, which is conducive to the long-term use of the anti-fall net 7. At the same time, the anti-fall net 7 is woven from polyester industrial yarn or polypropylene high-strength yarn. Utilizing the high strength, light weight and high breaking strength of polypropylene high-strength yarn, it can be made into an anti-fall net body with high safety factor requirements.

[0038] When it is necessary to replace the damaged fall protection net 7, simply unscrew the bolt 12 installed on the top of the fixing ring 8, remove the fixing ring 8 from the top of the bottom ring 5, and then easily remove the mounting ring 6 and the fall protection net 7 connected to the mounting ring 6 from the inside of the annular groove 2. The operation is simple. In addition, four handles 14 arranged in a circular array are fixedly installed on the inner wall of the fixing ring 8, which makes it convenient for workers to remove the entire fall protection net assembly from the inside of the annular groove 2, thereby facilitating subsequent inspection work in the well. At the same time, the pull rope 15 on the new fall protection net 7 is tied to the handles 14, keeping the pull rope 15 with a certain degree of slack, so that it has a certain pulling effect on the fall protection net 7. Therefore, in the event that one side of the fall protection net 7 breaks, the presence of the pull rope 15 helps to improve the protection of personnel falling into the well.

[0039] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wellbore fall arrest net comprising a concrete well ring (1), characterized in that: The top of the concrete well circle (1) is provided with an annular groove (2) for installing a well lid, the inner bottom wall of the annular groove (2) is embedded with a plurality of pipe sleeves (3) arranged in a ring array, a fall arrest net assembly is installed inside the annular groove (2), the bottom of the fall arrest net assembly is fixedly installed with a plug rod (4) corresponding to the pipe sleeve (3), and the plug rod (4) is inserted into the inside of the pipe sleeve (3).

2. A wellbore fall arrest net according to claim 1, wherein: The fall arrest net assembly comprises a bottom ring (5), a mounting ring (6), a fall arrest net (7) and a fixing ring (8), the bottom ring (5) is installed inside the annular groove (2), the top of the plug rod (4) is fixedly connected with the bottom of the bottom ring (5), the upper surface of the bottom ring (5) is provided with an annular mounting groove (16), the mounting ring (6) is located inside the annular mounting groove (16), the peripheral side of the fall arrest net (7) is fixedly connected with the inner wall of the mounting ring (6), and the top of the bottom ring (5) is detachably installed with the fixing ring (8).

3. A wellbore fall arrest net according to claim 2, wherein: The inner bottom wall of the annular mounting groove (16) is fixedly installed with a plurality of vertical rods (9) arranged in a ring array, the mounting ring (6) is provided with a through hole (10) matched with the vertical rod (9), the vertical rod (9) is inserted into the inside of the through hole (10), and the mounting ring (6) and the inner bottom wall of the annular mounting groove (16) are installed with a buffer spring (11), and the buffer spring (11) is sleeved on the surface of the vertical rod (9).

4. A wellbore fall arrest net according to claim 2, wherein: The fixing ring (8) and the bottom ring (5) are fixedly connected through bolts (12).

5. A wellbore fall arrest net according to claim 2, wherein: The upper surface of the fixing ring (8) is provided with a mounting groove, and the inside of the mounting groove is fixedly installed with a fluorescent ring (13).

6. A wellbore fall arrest net according to claim 2, wherein: The fall arrest net (7) is woven by polyester industrial yarn or polypropylene high-strength yarn.

7. A wellbore fall arrest net according to claim 2, wherein: Four handles (14) arranged in a ring array are fixedly installed on the inner side wall of the fixing ring (8).

8. A wellbore fall arrest net according to claim 7, wherein: The edges of the fall arrest net (7) are tied with a pull rope (15), and the other end of the pull rope (15) is tied on the handle (14).

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