Manhole locking device

By designing a manhole locking device, the cross-support rod and telescopic unit are used to divide the openings, which increases the difficulty of entry, solves the safety hazards of the lack of protection for the manhole, and achieves safety and flexible adaptability.

CN223119743UActive Publication Date: 2025-07-18PETROCHINA CO LTD
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Patent Information

Application Number
CN202422387947.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-29
Publication Date
2025-07-18
Estimated Expiration
2034-09-29

AI Technical Summary

Technical Problem

In the prior art, openings that are prohibited from entering and exiting by manholes, such as manholes, lack protection devices, and there are safety hazards, such as the risk of injury from personnel entering or falling.

Method used

A manhole locking device is designed to cross-connect the first support rod and the second support rod, divide the opening into a plurality of small holes, and increase the difficulty of entry by using a telescopic unit and a rotating assembly, adapt to the openings of different sizes, and provide adjusting members and locking members to further limit unauthorized entry.

Benefits of technology

Effectively restrict unauthorized personnel from entering, adapt to openings of different sizes, facilitate storage and transportation, reduce maintenance costs, and improve safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the field of protective devices, and discloses a manhole locking device. Comprising a first supporting rod, a second supporting rod, a telescopic unit, an adjusting piece, a rotating assembly and a connecting unit, the telescopic unit comprises a telescopic rod and a fixing piece, the telescopic rod is arranged in the first supporting rod and detachably connected with the first supporting rod, and the fixing piece penetrates through a first opening formed in one side of the first supporting rod to be fixedly connected with the telescopic rod; the telescopic rod is arranged in the second supporting rod and detachably connected with the second supporting rod, the fixing piece penetrates through a second opening formed in one side of the second supporting rod to be fixedly connected with the telescopic rod, and the adjusting pieces are installed at the two ends of the first supporting rod or the two ends of the second supporting rod and used for being fixedly connected with the telescopic rod. The connecting units comprise connecting rods and locking pieces, the locking pieces are arranged at the two ends of the connecting rods, every two adjacent rotating rods are fixed through the connecting rods, and the technical problem that in the prior art, no protective device exists at the opening where the manhole is forbidden to enter and exit, and potential safety hazards exist is solved.
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Description

Technical Field

[0001] The utility model belongs to the technical field of protective devices and relates to a manhole locking device. Background Technique

[0002] Openings such as manholes, wellheads, and ventilation openings that are prohibited from entry play important roles in various facilities, such as drainage, ventilation, and maintenance. However, when these openings lack necessary protective devices, they become potential safety hazards. Unprotected openings may cause people to accidentally enter or fall, and even lead to serious casualties, posing a direct threat to personal safety. The safety hazards are as follows: Risk of accidental entry: Openings without obvious signs and protective devices are likely to cause non-professionals or uninformed people to accidentally enter, resulting in accidents; Fall injury: For manholes at high altitudes or in deep wells, if protective covers or fences are not installed, people may fall once they approach, causing serious consequences. To ensure personal safety, it is required to provide necessary protection for openings such as manholes that are prohibited from entry. Content of the Utility Model

[0003] The purpose of the utility model is to provide a manhole locking device. The manhole locking device is installed at the opening prohibited from entry, so that unauthorized personnel are prevented from passing through when not in use by non-staff members. The large opening is divided into multiple small holes, and telescopic units are arranged on these small holes, thereby significantly increasing the difficulty of illegal entry and solving the technical problem that there is no protective device at the opening of the manhole prohibited from entry in the prior art, resulting in safety hazards.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions: A manhole locking device includes: a first support rod, a second support rod, and a telescopic unit; the first support rod and the second support rod are movably connected through a rotating member, the telescopic unit is arranged at both ends of the first support rod and the second support rod, the telescopic unit is fixedly connected to the first support rod, and the telescopic unit is fixedly connected to the second support rod.

[0005] Further, a first opening is arranged on one side of the first support rod, a second opening is arranged on one side of the second support rod, and the first opening and the second opening are on the same side.

[0006] Further, the telescopic unit includes a telescopic rod and a fixing member; the telescopic rod is arranged inside the first support rod and is detachably connected to the first support rod, and the fixing member passes through the first opening and is fixedly connected to the telescopic rod.

[0007] Further, the telescopic rod is arranged inside the second support rod and is detachably connected to the second support rod, and the fixing member passes through the second opening and is fixedly connected to the telescopic rod.

[0008] Further, it further includes adjusting members, which are arranged at both ends of the first support rod and fixedly connected to the telescopic unit; the adjusting members are arranged at both ends of the second support rod and fixedly connected to the telescopic unit.

[0009] Further, it further includes a rotating assembly, which includes a rotating rod. The rotating rod is arranged on one side of the first support rod and fixedly connected to the first support rod. The rotating rod is arranged on one side of the second support rod and fixedly connected to the second support rod.

[0010] Further, the rotating assembly further includes a rotating shaft. The rotating shaft is arranged between the rotating rod and the first support rod. One end of the rotating shaft is fixedly connected to the first support rod, and the other end is movably connected to the rotating rod; the rotating shaft is arranged between the rotating rod and the second support rod. One end of the rotating shaft is fixedly connected to the second support rod, and the other end is movably connected to the rotating rod.

[0011] Further, the included angle between the rotating rod and the first support rod is 0° - 90°; the included angle between the rotating rod and the second support rod is 0° - 90°.

[0012] Further, it further includes a connecting unit, which includes a connecting rod and a locking member; the connecting rod is arranged between adjacent rotating rods and is detachably connected to the rotating rod through the locking member. The locking member is arranged at both ends of the connecting rod.

[0013] Further, the locking member includes a locking screw.

[0014] Compared with the prior art, the present utility model has the following beneficial technical effects:

[0015] For a manhole locking device of the present utility model, the first support rod and the second support rod are cross-connected, and the ends of the first support rod and the second support rod are abutted against the inner wall of an opening such as a manhole where unauthorized entry is prohibited, and the opening is divided into four small holes, which can effectively restrict unauthorized personnel from entering.

[0016] For a manhole locking device of the present utility model, the first support rod and the second support rod are rotated through a rotating member. When not in use, the first support rod and the second support rod can be rotated into a straight line for convenient storage and transportation.

[0017] For a manhole locking device of the present utility model, the telescopic unit is installed inside the first support rod and the second support rod, and the lengths of the first support rod and the second support rod can be adjusted, so that the manhole locking device can adapt to openings of different sizes.

[0018] The utility model relates to a manhole locking device. The adjusting member is arranged at both ends of the first support rod and the second support rod. The lengths of the first support rod and the telescopic rod or the second support rod and the telescopic rod can be finely adjusted through the adjusting member to further adapt to manholes of different sizes.

[0019] The utility model relates to a manhole locking device. Through a rotating assembly, part of the structure extends out of the first support rod or the second support rod and is located in the small hole, forming an additional obstacle inside the first opening or the second opening, thereby further restricting non-staff from entering when the opening where entry is prohibited is not in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 is a schematic structural diagram of a manhole locking device of the present utility model;

[0022] Figure 2 is a schematic structural diagram of the closed state of a manhole locking device of the present utility model;

[0023] Figure 3 is a schematic structural diagram of using a rotating assembly in an embodiment of the present utility model.

[0024] Reference numerals:

[0025] 1 - First support rod; 11 - First opening; 2 - Second support rod; 21 - Second opening; 3 - Telescopic rod; 4 - Fixing member; 5 - Adjusting member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In order to enable those skilled in the art to better understand the solutions of the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] It should be noted that the terms "first", "second", etc. in the description, claims and the above-mentioned drawings of the present utility model are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof, for example, a process, method, system, product or device comprising a series of steps or units do not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0028] The following further describes the present utility model in detail with reference to the drawings:

[0029] Embodiment 1

[0030] As Figure 1 shown, the present utility model provides a manhole locking device, including a first support rod 1, a second support rod 2, and a telescopic unit; the first support rod 1 and the second support rod 2 are movably connected through a rotating member, the telescopic unit is arranged at both ends of the first support rod 1 and the second support rod 2, the telescopic unit is fixedly connected to the first support rod 1, and the telescopic unit is fixedly connected to the second support rod 2.

[0031] Specifically, a groove adapted to the rotating member is provided between the first support rod 1 and the second support rod 2, the rotating member passes through the groove, movably connecting the first support rod 1 and the second support rod 2, so that the first support rod 1 and the second support rod 2 can rotate at the intersection, and after rotation, they are in a straight line, as Figure 2 shown. When not in use, it is convenient for storage and transportation. A movable connection means that after a component is connected, it can maintain relative movement. A relatively static connection is easier to disassemble and maintain. In the case of maintenance requirements, a movable connection can quickly disassemble and replace faulty components, reducing maintenance costs and time.

[0032] Telescopic units are provided at both ends of the first support rod 1, and telescopic units are provided at both ends of the second support rod 2. The telescopic unit includes a telescopic rod 3 and a fixing member 4. In this embodiment, taking Figure 1For example, on the upward sides of the first support rod 1 and the second support rod 2, there are a first opening 11 and a second opening 21. The first opening 11 is arranged on the side of the first support rod 1 away from the groove, and there are multiple of them; the second opening 21 is arranged on the side of the second support rod 2 away from the groove, and there are multiple of them. The lengths of the first support rod 1 or the second support rod 2 are extended through the telescopic unit by the multiple first openings 11 or second openings 21, enabling the manhole locking device to adapt to openings of different sizes. The telescopic rod 3 is installed inside the two ends of the first support rod 1 and the second support rod 2, and can extend into and out of the first support rod 1 or the second support rod 2. The fixing member 4 passes through the first opening 11 and is fixedly connected to the telescopic rod 3. The fixing member 4 passes through the second opening 21 and is fixedly connected to the telescopic rod 3. In this embodiment, the fixing member 4 is a limit screw. The limit screw is used to limit the movement range of mechanical equipment or structures. Through the fixation of the limit screw, the connected parts or devices are restricted during movement, thus ensuring the normal operation and safety of the equipment. Here: the fixing member 4 passes through the first opening 11 or the second opening 21 and is threadedly connected to the telescopic rod 3, making the telescopic rod 3 unable to move and being restricted during movement.

[0033] The surface of the fixing member 4 can be galvanized, phosphated, or sprayed to improve its corrosion resistance and appearance quality. In practical applications, appropriate specifications need to be selected according to specific requirements.

[0034] The adjusting member 5 is installed at both ends of the first support rod 1 and is fixedly connected to the telescopic unit; the adjusting member 5 is arranged at both ends of the second support rod 2 and is fixedly connected to the telescopic unit. The adjusting member 5 is an adjusting screw, and its length or position is changed by rotation to achieve fine adjustment. When using the adjusting member 5, do not rotate it significantly at one time to avoid exceeding the required adjustment range.

[0035] Embodiment 2

[0036] A manhole locking device of the present utility model includes a first support rod 1, a second support rod 2, and a telescopic unit. The telescopic unit includes a telescopic rod 3 and a fixing member 4. The telescopic rod 3 is arranged inside the two ends of the first support rod 1 and the second support rod 2. In addition, a first opening 11 is provided on the first support rod 1, and a second opening 21 is provided on the second support rod 2. The fixing member 4 passes through the first opening 11 and is detachably connected to the first support rod 1. In this embodiment, the detachable connection is a threaded connection. The fixing member 4 passes through the second opening and is detachably connected to the second support rod 2. The adjusting member 5 is installed at both ends of the first support rod 1 and the second support rod 2 and is fixedly connected to the end of the telescopic rod 3. By screwing the adjusting member 5 in or out relative to the telescopic rod 3, the effective length of the telescopic rod 3 can be precisely controlled to adapt to different sizes of bayonets.

[0037] Such as Figure 3As shown, it further includes a rotating assembly. The rotating assembly includes a rotating rod and a rotating shaft. The length of the rotating shaft is less than or equal to the distance between the end of the telescopic rod 3 away from the adjusting member 5 and the rotating member. The rotating rod is arranged on one side of the first support rod 1 and fixedly connected to the first support rod 1. The rotating rod is arranged on one side of the second support rod 2 and fixedly connected to the second support rod 2. It should be noted that the rotating rod can be arranged on the side of the first support rod 1 with the first opening 11, or on the other side of the first support rod 1 opposite to the first opening 11. The rotating rod can be arranged on the side of the second support rod 2 with the second opening 21, or on the other side opposite to the second opening 21. The prerequisite is that the four rotating rods must be on the same side. A rotating shaft is arranged between the rotating rod and the first support rod 1, with one end fixedly connected to the first support rod 1 and the other end movably connected to the rotating rod; a rotating shaft is arranged between the rotating rod and the second support rod 2, with one end fixedly connected to the second support rod 2 and the other end movably connected to the rotating rod. Here, the fixed connection includes various methods such as welding. The included angle between the rotating rod and the first support rod 1 is 0° - 90°, and the included angle between the rotating rod and the second support rod 2 is 0° - 90°. If the included angles between the rotating rod and the first support rod 1 or the second support rod 2 are both 90°, a connecting unit is used to fix two adjacent rotating rods. The connecting unit includes a connecting rod and a locking member. The locking member is a locking screw. The connecting rod is arranged between two adjacent rotating rods and is threadedly connected to the rotating rod through the locking member. The locking member is arranged at both ends of the connecting rod.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: it is still possible to modify the specific implementation manners of the present invention or make equivalent replacements. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention shall be covered by the protection scope of the claims of the present invention.

Claims

1. A manhole locking device, characterized in that: It includes a first support rod (1), a second support rod (2), and a telescopic unit; The first support rod (1) and the second support rod (2) are movably connected by a rotating member, the telescopic unit is arranged at both ends of the first support rod (1) and the second support rod (2), the telescopic unit is fixedly connected to the first support rod (1), and the telescopic unit is fixedly connected to the second support rod (2).

2. The manhole locking device according to claim 1, characterized in that: A first opening (11) is arranged on one side of the first support rod (1), a second opening (21) is arranged on one side of the second support rod (2), and the first opening (11) and the second opening (21) are on the same side.

3. The manhole locking device according to claim 2, characterized in that: The telescopic unit includes a telescopic rod (3) and a fixing member (4); The telescopic rod (3) is arranged in the first support rod (1) and is detachably connected to the first support rod (1), and the fixing member (4) passes through the first opening (11) and is fixedly connected to the telescopic rod (3).

4. The manhole locking device according to claim 3, characterized in that: The telescopic rod (3) is arranged in the second support rod (2) and is detachably connected to the second support rod (2), and the fixing member (4) passes through the second opening (21) and is fixedly connected to the telescopic rod (3).

5. The manhole locking device according to claim 1, characterized in that: It further includes an adjusting member (5), the adjusting member (5) is arranged at both ends of the first support rod (1) and is fixedly connected to the telescopic unit; the adjusting member (5) is arranged at both ends of the second support rod (2) and is fixedly connected to the telescopic unit.

6. The manhole locking device according to claim 1, characterized in that: It further includes a rotating assembly, the rotating assembly includes a rotating rod, the rotating rod is arranged on one side of the first support rod (1), the rotating rod is fixedly connected to the first support rod (1), the rotating rod is arranged on one side of the second support rod (2), and the rotating rod is fixedly connected to the second support rod (2).

7. The manhole locking device according to claim 6, characterized in that: The rotating assembly further includes a rotating shaft, the rotating shaft is arranged between the rotating rod and the first support rod (1), one end of the rotating shaft is fixedly connected to the first support rod (1), and the other end is movably connected to the rotating rod; the rotating shaft is arranged between the rotating rod and the second support rod (2), one end of the rotating shaft is fixedly connected to the second support rod (2), and the other end is movably connected to the rotating rod.

8. The manhole locking device according to claim 6, characterized in that: The included angle between the rotating rod and the first support rod (1) is 0° - 90°; The included angle between the rotating rod and the second support rod (2) is 0° - 90°.

9. The manhole locking device according to claim 6, characterized in that: It further includes a connecting unit, the connecting unit includes a connecting rod and a locking member; The connecting rod is arranged between two adjacent rotating rods and is detachably connected to the rotating rod through the locking member, and the locking member is arranged at both ends of the connecting rod.

10. The manhole locking device according to claim 9, characterized in that: The locking member includes a locking screw.