A cable tunnel wellhead device

Abstract

The utility model relates to cable tunnel wellhead technical field discloses a cable tunnel wellhead device, including wellhead body, four fixed blocks that are circumferentially distributed are set up in wellhead body inner chamber, the circular mounting plate is placed on four fixed blocks top, the setting plate is set up on the circular mounting plate, the wellhead body one side is provided with the circular slot. The utility model discloses, when the well lid is covered on the wellhead body, the circular plug-in rod can be vertically moved down at this moment, so the L-shaped mounting plate can be vertically moved down, when the L-shaped mounting plate vertically moves down, the L-shaped mounting plate will lose the spacing of the setting plate at this moment, so the setting plate can be turned over to the circular mounting plate, thereby ensuring that when the well lid breaks, the pedestrian steps on it, the falling situation occurs at this moment, because the setting plate is arranged below, so the setting plate can ensure that the pedestrian will not fall into the well, ensuring the life safety of the pedestrian.

Description

Technical Field

[0001] This utility model belongs to the technical field of cable tunnel wellheads, specifically, it relates to a cable tunnel wellhead device. Background Technology

[0002] In recent years, with the acceleration of urbanization and the continuous growth of electricity demand, cable tunnels, as a key infrastructure for urban power transmission, have seen their application scope expand. Cable tunnel openings, serving as the passage connecting surface and underground cable tunnels, play a vital role in ensuring the safe operation of cables and facilitating routine inspection and maintenance.

[0003] However, the current method of protecting cable tunnel openings often involves covering them with manhole covers to prevent pedestrians from falling in. But heavy trucks in cities can easily break these covers when they hit them. As a result, pedestrians who accidentally step on the manhole cover are likely to fall into the cable tunnel, which is often very deep and can be life-threatening.

[0004] In view of this, this utility model is hereby proposed. Utility Model Content

[0005] To address the problem that existing methods of protecting cable tunnel openings often involve covering them with manhole covers to prevent pedestrians from falling in, the present invention addresses this issue. Heavy trucks in cities frequently pass over these covers, causing them to break. This allows pedestrians to accidentally step on the cover and fall into the cable tunnel, which, given its depth, poses a significant safety hazard. The basic concept of this invention is as follows: A cable tunnel manhole device includes a manhole body, in which four fixing blocks are arranged in a circular pattern within the inner cavity of the manhole body. A circular mounting plate is placed above the four fixing blocks, and a placement plate is provided on the circular mounting plate. A circular slot is opened on one side of the manhole body, and a rectangular slot is opened at the bottom of the circular mounting plate. A manhole cover is placed on top of the manhole body.

[0006] In a preferred embodiment of this utility model, a circular insertion rod is slidably disposed in the inner cavity of the circular slot, and a butterfly spring is disposed at the bottom of the circular insertion rod, with the end of the butterfly spring away from the circular insertion rod disposed at the bottom of the inner cavity of the circular slot.

[0007] In a preferred embodiment of this utility model, a slot is provided through the circular mounting plate, and an L-shaped mounting plate is placed inside the slot.

[0008] In a preferred embodiment of this utility model, one end of the L-shaped mounting plate is attached to the placement plate, and the end of the L-shaped mounting plate away from the placement plate moves through the rectangular slot, with the port located on the circular plug rod.

[0009] In a preferred embodiment of this utility model, the placement plate is provided with two rotating rods, which are symmetrical to each other. Each of the two rotating rods has a bearing at its opposite end, and each of the two bearings has a mounting block on its opposite side. The two mounting blocks are respectively mounted on a circular mounting plate and are symmetrical to each other.

[0010] In a preferred embodiment of this utility model, the manhole cover is provided with multiple anti-slip grooves.

[0011] Compared with the prior art, the present invention has the following advantages: This invention allows the circular plug rod to move vertically downwards when the manhole cover is placed on the manhole body. This allows the L-shaped mounting plate to move vertically downwards as well. When the L-shaped mounting plate moves vertically downwards, it loses its restraint on the placement plate, allowing the placement plate to flip onto the circular mounting plate. This ensures that if the manhole cover breaks and a pedestrian falls on it, the placement plate below will prevent the pedestrian from falling into the manhole, thus ensuring pedestrian safety.

[0012] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0013] In the attached diagram: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic cross-sectional view of the wellhead body of this utility model; Figure 3 This is a top view schematic diagram of the cross-sectional structure of the wellhead body of this utility model; Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the exploded structure of the wellhead body and well cover of this utility model; Figure 6 This is a schematic diagram of a partial internal structure of the wellhead body of this utility model.

[0014] In the picture: 1. Wellhead body; 2. Well cover; 3. Circular groove; 4. Rectangular groove; 5. Fixing block; 6. Circular mounting plate; 7. Butterfly spring; 8. Circular plug rod; 9. L-shaped mounting plate; 10. Mounting block; 11. Placement plate; 12. Rotating rod; 13. Bearing; 14. Placement groove. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0016] like Figures 1 to 6 As shown, a cable tunnel manhole device includes a manhole body 1. Four circumferentially arranged fixing blocks 5 are installed inside the manhole body 1. A circular mounting plate 6 is placed above the four fixing blocks 5, and a placement plate 11 is mounted on the circular mounting plate 6. A circular slot 3 is opened on one side of the manhole body 1, and a rectangular slot 4 is opened at the bottom of the circular mounting plate 6. A manhole cover 2 is placed on top of the manhole body 1. When the manhole cover 2 is placed on the manhole body 1, a circular plug rod 8 can move vertically downwards, allowing an L-shaped mounting plate 9 to move vertically downwards. When the L-shaped mounting plate 9 moves vertically downwards, it loses its restraint on the placement plate 11, allowing the placement plate 11 to flip onto the circular mounting plate 6. This ensures that if the manhole cover 2 breaks and a pedestrian falls on it, the placement plate 11 below will prevent the pedestrian from falling into the manhole, thus ensuring pedestrian safety.

[0017] In a specific embodiment, a circular insertion rod 8 is slidably disposed within the inner cavity of the circular slot 3. A butterfly spring 7 is disposed at the bottom of the circular insertion rod 8, with the end of the butterfly spring 7 away from the circular insertion rod 8 located at the bottom of the inner cavity of the circular slot 3. This arrangement ensures that when maintenance personnel need to perform repairs, the manhole cover 2 is opened, allowing the circular insertion rod 8 to move vertically upwards with the assistance of the butterfly spring 7. When the circular insertion rod 8 moves vertically upwards, it can drive the L-shaped mounting plate 9 to move vertically upwards as well.

[0018] Furthermore, a slot 14 is formed through the circular mounting plate 6, and an L-shaped mounting plate 9 is placed inside the slot. In this configuration, the installation position of the L-shaped mounting plate 9 is determined.

[0019] Furthermore, one end of the L-shaped mounting plate 9 is fitted onto the placement plate 11, and the other end of the L-shaped mounting plate 9, away from the placement plate 11, extends through the rectangular slot 4, with its port located on the circular plug-in rod 8. This configuration ensures that personnel can access the inner wall of the wellhead body 1 through the rectangular slot 4 to perform internal inspections.

[0020] Furthermore, the placement plate 11 is equipped with two rotating rods 12, which are symmetrical to each other. Each rotating rod 12 has a bearing 13 at its opposite end, and each bearing 13 has a mounting block 10 on its opposite side. The two mounting blocks 10 are respectively mounted on the circular mounting plate 6, and are symmetrical to each other. This configuration ensures that when the L-shaped mounting plate 9 moves vertically downwards, it loses its compressive force on the placement plate 11. Therefore, the placement plate 11 can flip under its own weight and with the assistance of the rotating rods 12 and bearings 13 until it flips to the bottom and fits against the circular mounting plate 6, at which point the wellhead body 1 can be sealed.

[0021] Furthermore, the manhole cover 2 has multiple anti-slip grooves. This design ensures that pedestrians walking on the manhole cover 2 will not slip to a certain extent.

[0022] The implementation principle of a cable tunnel wellhead device in this embodiment is as follows: First, the staff places the manhole cover 2 onto the manhole body 1. Under the action of gravity, the manhole cover 2 will press the circular plug rod 8 vertically downward on the circular slot 3. When the circular plug rod 8 moves downward, it will drive the L-shaped mounting plate 9 on the side wall to move vertically downward. When the L-shaped mounting plate 9 moves vertically downward, it will lose the pressure on the placement plate 11. Therefore, the placement plate 11 can flip under its own weight and with the assistance of the rotating rod 12 and the bearing 13 until the placement plate 11 flips to the bottom and fits with the circular mounting plate 6. At this time, it can seal the inside of the manhole body 1, thus ensuring that if the manhole cover 2 breaks and a pedestrian falls on it, the placement plate 11 below will prevent the pedestrian from falling into the manhole, ensuring the safety of the pedestrian. When maintenance personnel need to perform repairs, they open the manhole cover 2, allowing the circular plug rod 8 to move vertically upwards with the assistance of the disc spring 7. When the circular plug rod 8 moves vertically upwards, it drives the L-shaped mounting plate 9 to move vertically upwards. Thus, the other end of the L-shaped mounting plate 9 drives the placement plate 11 to rotate with the assistance of the rotating rod 12 and the bearing 13, allowing the rectangular slot 4 on the circular mounting plate 6 to open. Therefore, workers can enter the manhole body 1 to perform repairs using ladders or other equipment.

Claims

1. A cable tunnel wellhead device, comprising a wellhead body (1), characterized in that: The wellhead body (1) has four fixed blocks (5) arranged in a circular pattern inside the cavity. A circular mounting plate (6) is placed on top of the four fixed blocks (5). A placement plate (11) is provided on the circular mounting plate (6). A circular slot (3) is opened on one side of the wellhead body (1), and a rectangular slot (4) is opened at the bottom of the circular mounting plate (6). A well cover (2) is placed on top of the wellhead body (1).

2. The cable tunnel wellhead device according to claim 1, characterized in that, A circular plug rod (8) is slidably provided in the inner cavity of the circular slot (3). A butterfly spring (7) is provided at the bottom of the circular plug rod (8). The end of the butterfly spring (7) away from the circular plug rod (8) is located at the bottom of the inner cavity of the circular slot (3).

3. The cable tunnel wellhead device according to claim 1, characterized in that, The circular mounting plate (6) has a through slot (14) and an L-shaped mounting plate (9) is placed inside the slot.

4. A cable tunnel wellhead device according to claim 3, characterized in that, One end of the L-shaped mounting plate (9) is attached to the placement plate (11), and the other end of the L-shaped mounting plate (9) away from the placement plate (11) moves through the rectangular slot (4) and the port is set on the circular plug rod (8).

5. A cable tunnel wellhead device according to claim 1, characterized in that, The placement plate (11) is provided with two rotating rods (12), which are symmetrical to each other. Each of the two rotating rods (12) is provided with a bearing (13) at the opposite end. Each of the two bearings (13) is provided with a mounting block (10) on the opposite side. The two mounting blocks (10) are respectively provided on the circular mounting plate (6) and are symmetrical to each other.

6. A cable tunnel wellhead device according to claim 1, characterized in that, The manhole cover (2) has multiple anti-slip grooves.

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