A multifunctional safety protection device for cable well access

Abstract

The utility model discloses a kind of multifunctional safety protection devices for cable well exit and entry, it is related to electric power construction safety protection technical field, including the plate seat around cable well, plate seat top side swing connection has support, recess is respectively set up in the four around plate seat, rotating platform is provided on the surface of support, the upper end of telescopic ladder is bolted to the bottom of rotating platform, support both sides are rotatably connected with support rod through accommodating groove, the rotating radius of support rod is set with the clamping groove of plate seat upper surface, an L-shaped structure covering cable well mouth is formed by plate seat and support swing connection, to form effective warning in the vicinity of cable well mouth, simultaneously, a telescopic ladder is fixedly installed on the surface of support through rotating platform, the top position of telescopic ladder is fixed, in use, only when operating personnel leave cable well, telescopic ladder can be pulled from bottom to top to complete the contraction of ladder climbing, even if the placement angle of telescopic ladder is vertical state, it also will not occur to dump in the process of being climbed by user.

Description

Technical Field

[0001] This utility model relates to the field of power construction safety protection technology, and in particular to a multi-functional safety protection device for cable well access. Background Technology

[0002] As a key node in the power transmission and distribution network, the maintenance of cable wells directly affects the reliability and safety of the power grid operation. Due to the special nature of the power transmission and distribution network, cable wells may be laid in various locations in the city, and the actual depth of cable wells in different locations varies greatly.

[0003] To facilitate inspection and maintenance work, workers often use ladders to enter cable wells. However, fixed ladders take up a lot of space and are not portable, while the part of a folding ladder that protrudes outside the well may be affected by external forces, causing the ladder to retract completely and fall into the well. In special environments, such as when the well is small, the vertical angle of the ladder may be too large, causing the ladder to tip over and sway when workers use it. Summary of the Invention

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a multifunctional safety protection device for accessing cable wells. This device solves the problem that the ladder used by workers when entering and exiting cable wells may tip over due to the lack of fixed restraints. It also solves the problem that there is no direct warning device at the cable well opening when workers are working inside the cable well, and that external environmental forces may come into contact with the ladder and affect its use.

[0005] The technical solution of this utility model is as follows: it includes a plate base surrounding a cable well, with a rectangular through hole at the center of the plate base covering the cable well opening, a bracket movably connected to one side of the top of the plate base, grooves respectively opened around the plate base, a limiting plate bolted to the inner wall of the plate base corresponding to the groove position, a rotating platform set on the surface of the bracket, and the upper end of a telescopic ladder bolted to the bottom of the rotating platform. Users can release and replace telescopic ladders of different lengths through the bolts to cope with different usage scenarios. A limiting clamp is set on the surface of the bracket to lock the lower end of the telescopic ladder, and receiving grooves are opened on both sides of the bracket. A support rod is rotatably connected to the bottom of the inner wall of the receiving groove, and a slot is opened on the upper surface of the plate base corresponding to the rotation radius of the support rod.

[0006] Furthermore, the limiting plate is an L-shaped rust-proof steel plate. The vertical part of the limiting plate has through holes for bolts to pass through. The length of the vertical part of the limiting plate is adapted to the sum of the thickness of the plate base and the thickness along the cable well opening. The horizontal part of the limiting plate extends to one side of the groove. By connecting the limiting plate and the plate base, the horizontal part of the limiting plate extends into the cable well to complete the position restriction of the plate base.

[0007] Furthermore, the connecting bolts between the limiting plate and the plate base extend along one side of the limiting plate through the plate base into the groove. The maximum length of the bolts is the sum of the thicknesses of the plate base and the limiting plate, to avoid excessive protrusions on the inner side of the plate base affecting workers' passage through the plate base when entering the cable well.

[0008] Furthermore, the support consists of two side columns rotatably connected to the plate base and a grid-shaped connecting structure between the side columns.

[0009] Furthermore, the rotating platform is disposed on the top surface of the support connecting frame, and the limiting clamp is disposed on the bottom surface of the support connecting frame, so that there is sufficient gap between the rotating platform and the limiting clamp to accommodate the telescopic ladder.

[0010] Furthermore, the support rod is connected to the bracket via a limiting pivot. The limiting pivot restricts the rotation direction to keep the support rod always in an upward vertical state or rotates it to abut the inner wall of the slot. The support rod abuts the slot to support the bracket and keep it in a vertical state, so that the support rod obtains sufficient support force while preventing the support rod from detaching from the slot due to external environmental factors, thus keeping the bracket in a vertical state at all times.

[0011] Furthermore, the telescopic ladder is a safety insulated ladder for power construction. The retracted length of the telescopic ladder is adapted to the diameter of the rectangular perforation of the base plate, ensuring that the support and the base plate will not affect the fit between the support and the base plate during the retraction process.

[0012] Furthermore, the inner wall of the plate base and the top of the bracket have preset installation slots, and the two installation slots are electrically connected. The installation slots can be used to install sensing devices and matching warning devices to alert the surrounding area that construction work is underway.

[0013] The beneficial effects of this utility model are as follows: This utility model forms an L-shaped structure covering the cable well opening by movably connecting the plate base and the bracket, thereby creating an effective warning near the cable well opening. At the same time, a telescopic ladder is fixedly installed on the surface of the bracket via a rotating platform, so that the top position of the telescopic ladder is fixed. When in use, the operator can only pull the telescopic ladder from bottom to top to complete the retraction of the ladder after leaving the cable well. Furthermore, because the top position of the telescopic ladder is fixed, it will not tip over even if the telescopic ladder is placed at a vertical angle during the user's climbing process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the closed state of the bracket of this utility model; Figure 3 This is a schematic diagram of the plate base structure of this utility model; Figure 4 This is a schematic diagram of the support structure of this utility model.

[0015] Reference numerals in the attached drawings: 1. Plate base; 2. Bracket; 3. Limiting plate; 4. Rotating platform; 5. Telescopic ladder; 6. Limiting clamp; 7. Receiving groove; 8. Support rod; 9. Slot. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] like Figure 1-4 As shown, a multi-functional safety protection device for cable well access includes a plate base 1 surrounding the cable well. A rectangular through-hole covering the cable well opening is formed at the center of the plate base 1. A bracket 2 is movably connected to one side of the top of the plate base 1. Pre-set installation slots are provided on the inner wall of the plate base 1 and the top of the bracket 2. The two installation slots are electrically connected, allowing the installation of sensors and matching warning devices to alert the surrounding area to ongoing construction work. Grooves are formed around the perimeter of the plate base 1, and a limiting plate 3, made of L-shaped rust-proof steel, is bolted to the inner wall of the plate base 1 corresponding to the groove positions. The vertical... Partially, through holes are provided for bolts to pass through. The vertical length of the limiting plate 3 is adapted to the sum of the thickness of the plate base 1 and the thickness along the cable well opening. The horizontal part of the limiting plate 3 extends to one side of the groove. By connecting the limiting plate 3 and the plate base 1, the horizontal part of the limiting plate 3 extends into the cable well to complete the position restriction of the plate base 1. The connecting bolt of the limiting plate 3 and the plate base 1 passes through the plate base 1 along one side of the limiting plate 3 and extends into the groove. The maximum length of the bolt is the sum of the thickness of the plate base 1 and the limiting plate 3, so as to avoid the plate base 1 having too many protruding parts on the inner side, which would affect the workers' passage through the plate base 1 when entering the cable well. The support 2 has a rotating platform 4 on its surface. The support 2 is composed of two side columns that are rotatably connected to the base plate 1 and a grid-shaped connecting structure between the side columns. The upper end of the telescopic ladder 5 is bolted to the bottom of the rotating platform 4. Users can release and replace the telescopic ladder 5 of different lengths through the bolts to cope with different usage scenarios. The support 2 has a limiting clamp 6 that engages the lower end of the telescopic ladder 5. The rotating platform 4 is located on the top surface of the support 2 connecting frame, and the limiting clamp 6 is located on the bottom surface of the support 2 connecting frame, so that there is enough space between the rotating platform 4 and the limiting clamp 6 to accommodate the telescopic ladder 5. The telescopic ladder 5 is a safety insulated ladder for power construction. The retracted length of the telescopic ladder 5 is adapted to the diameter of the rectangular perforation of the base plate 1, ensuring that the support 2 and the base plate 1 will not affect the fit of the support 2 to the base plate 1 during the retraction process. Both sides of the bracket 2 are provided with receiving grooves 7. The bottom of the inner wall of the receiving groove 7 is rotatably connected to a support rod 8. The upper surface of the plate base 1 is provided with a slot 9 corresponding to the rotation radius of the support rod 8. The support rod 8 is connected to the bracket 2 through a limiting rotating shaft. The limiting rotating shaft restricts the rotation direction to keep the support rod 8 always in an upward vertical state or rotates to abut the inner wall of the slot 9. The support rod 8 supports the bracket 2 to maintain a vertical state by abutting the slot 9, so that the support rod 8 obtains sufficient support force while preventing the support rod 8 from disengaging from the slot 9 due to external environmental factors, and can always maintain the vertical state of the bracket 2.

[0018] Working principle of this utility model: First, after opening the cable well, the operator places the plate base 1 to cover the cable well opening. Then, the limiting plate 3 is connected to fix the position of the plate base 1. Next, the operator lifts the bracket 2 and takes out the support rod 8 along the receiving groove 7. The support rod 8 is rotated along the connection position between the support rod 8 and the bracket 2 until the end enters the slot 9, thus completing the lifting of the bracket 2. At this time, the bracket 2 stands vertically on top of the plate base 1, which can provide a warning to the surroundings. The operator can also install sound and light alarm devices, harmful gas detection devices, and ventilation devices through the installation slot. After the operator has completed the observation of the cable well, he can rotate the telescopic ladder 5 along the rotating platform 4 so that the telescopic ladder 5 is no longer restricted by the clamp 6 and is aligned with the cable well opening. The telescopic ladder 5 is then gradually extended until it touches the bottom of the well. After that, the operator can directly enter the cable well through the telescopic ladder 5. After completing the work, the operator climbs out of the cable well and retracts the telescopic ladder 5 step by step. Then, the telescopic ladder 5 is reconnected with the limiting clamp 6. After rotating the retractable support rod 8 to fold the bracket 2 and the plate base 1, the limiting plate 3 is released, and the entire structure can then leave the ground.

[0019] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multifunctional safety protection device for accessing and exiting cable wells, comprising a plate base (1) surrounding the cable well, wherein a rectangular through hole covering the cable well opening is provided at the center of the plate base (1), and a bracket (2) is movably connected to one side of the top of the plate base (1), characterized in that: The plate base (1) has grooves on all four sides. A limiting plate (3) is bolted to the inner wall of the plate base (1) at the corresponding groove position. A rotating platform (4) is provided on the surface of the bracket (2). The upper end of the telescopic ladder (5) is bolted to the bottom of the rotating platform (4). A limiting clamp (6) is provided on the surface of the bracket (2) to engage the lower end of the telescopic ladder (5). A receiving groove (7) is provided on both sides of the bracket (2). A support rod (8) is rotatably connected to the bottom of the inner wall of the receiving groove (7). A slot (9) is provided on the upper surface of the plate base (1) corresponding to the rotation radius of the support rod (8).

2. The multi-functional safety protection device for cable well access according to claim 1, characterized in that: The limiting plate (3) is an L-shaped rust-proof steel plate. The vertical part of the limiting plate (3) has through holes for bolts to pass through. The length of the vertical part of the limiting plate (3) is adapted to the sum of the thickness of the plate seat (1) and the thickness of the cable well opening. The horizontal part of the limiting plate (3) extends to the groove side.

3. A multi-functional safety protection device for cable well access according to claim 2, characterized in that: The connecting bolts of the limiting plate (3) and the plate base (1) extend through the plate base (1) along one side of the limiting plate (3) into the groove. The maximum length of the bolts is the sum of the thicknesses of the plate base (1) and the limiting plate (3).

4. A multi-functional safety protection device for cable well access according to claim 1, characterized in that: The bracket (2) consists of two side columns that are rotatably connected to the plate base (1) and a grid-shaped connecting structure between the side columns.

5. A multi-functional safety protection device for accessing cable wells according to claim 4, characterized in that: The rotating platform (4) is set on the top surface of the bracket (2) connecting frame, and the limiting clamp (6) is set on the bottom surface of the bracket (2) connecting frame.

6. A multi-functional safety protection device for cable well access according to claim 1, characterized in that: The support rod (8) is connected to the bracket (2) through a limiting pivot. The limiting pivot restricts the rotation direction so that the support rod (8) always remains in an upward vertical state or rotates to the inner wall of the abutting slot (9). The support rod (8) supports the bracket (2) to remain in a vertical state through the abutting slot (9).

7. A multi-functional safety protection device for cable well access according to claim 1, characterized in that: The telescopic ladder (5) is a safety insulated ladder for power construction. The retracted length of the telescopic ladder (5) is adapted to the diameter of the rectangular perforation of the base plate (1).

8. A multi-functional safety protection device for cable well access according to claim 1, characterized in that: The inner wall of the plate base (1) and the top of the bracket (2) have preset installation slots, and the two installation slots are electrically connected.

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