Integrated insulation protection cover for aerial cable and installation tool and installation method thereof

Abstract

The invention provides an integrated insulation protective cover for an aerial cable and an installation tool and method thereof, and the integrated insulation protective cover comprises a porcelain bottle protective cover which is used for wrapping the top of a porcelain bottle, the porcelain bottle protective cover is a semi-closed cover body with a closed top end and open lower ends and two sides, and cable protective covers which are arranged at the two sides of the porcelain bottle protective cover. The cable protection cover comprises a first-stage cable protection cover communicated with the two sides of the porcelain bottle protection cover and a second-stage cable protection cover arranged on the outer side of the first-stage cable protection cover and communicated with the first-stage cable protection cover through a flexible connecting piece. The porcelain insulator can cover the top and cables on two sides of the porcelain insulator, and provides effective protection for the porcelain insulator and the cables on two sides of the porcelain insulator; and meanwhile, the first-stage cable protection cover and the second-stage cable protection cover are connected through the flexible connecting piece, so that the fitting degree of the insulation protection cover is improved, and loosening and falling can be effectively prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power overhead line maintenance supporting equipment, in particular to an integrated insulation protective cover for overhead cables and an installation tool and method thereof. BACKGROUND

[0002] The cable pole porcelain bottle (insulator) is a core component for realizing wire insulation and fixation in a power overhead line, and its insulation performance directly determines the safety and stability of power transmission. Currently, the cable pole porcelain bottle and the cables connected on both sides thereof running outdoors are threatened by multiple environments and external forces, and the existing protection devices have obvious deficiencies.

[0003] Traditional porcelain bottle protective covers are mostly designed only for the porcelain bottle body, and cannot effectively cover the cables extending from the top and both sides of the porcelain bottle. The connection part of the porcelain bottle and the cable is prone to accumulate dust, bird droppings and other pollutants, and is prone to form ice or water in rainy and snowy weather, resulting in a decrease in insulation performance and an increase in accident risk.

[0004] In addition, due to the thermal expansion and contraction characteristics of the cable, the cables at both ends of the porcelain bottle have a certain sag, the existing protective cover has poor fit with the porcelain bottle and the cable, lacks flexible connection at the transition, and is prone to loosen or fall off in severe weather such as strong wind.

[0005] Chinese patent CN119314757A discloses a cable pole single porcelain bottle rain and snow prevention bird damage insulation sheath capable of being installed under electricity, which protects the insulator by a semi-enclosing shell, but the device has poor fit with the cable, lacks flexible transition, is not suitable for use in the cable sagging scenario, and is prone to cause the cable to separate in extreme environments. Therefore, there is an urgent need to design an insulation protective cover that can cover the top and both sides of the porcelain bottle and has good fit with the cable by using flexible transition. SUMMARY

[0006] The present application aims to overcome the problems in the prior art, and provides an integrated insulation protective cover for overhead cables and an installation tool and method thereof, which can cover the top and both sides of the porcelain bottle, has good fit with the cable by using flexible connection, provides effective protection for the porcelain bottle and the cables on both sides thereof, and is more convenient to install.

[0007] In order to achieve the above object, the application provides the following technical scheme: the overhead cable integrated insulation protection cover comprises a porcelain bottle protection cover for wrapping the top of the porcelain bottle, the porcelain bottle protection cover is a semi-closed cover body with a closed top end and open lower end and two sides, characterized in that: further comprising cable protection covers arranged on the two sides of the porcelain bottle protection cover, the cable protection cover comprises a first-stage cable protection cover in communication with the two sides of the porcelain bottle protection cover and a second-stage cable protection cover arranged outside the first-stage cable protection cover and communicated through a flexible connecting piece. The flexible connecting piece can expand the connection of multiple-stage cable protection covers, which is suitable for different scenes; meanwhile, the flexible connecting piece can adapt to the arbitrary sagging arc of the cable, improving the fit of the insulation protection cover with the porcelain bottle and the cable.

[0008] According to the second aspect of the application, an installation tool for the overhead cable integrated insulation protection cover is provided, characterized in that: comprising a first operating rod, a mounting plate fixedly arranged on the top of the first operating rod, and a plurality of opening mechanisms for opening the cable protection cover fixedly arranged on the mounting plate, the opening mechanism comprises a pair of claw plates hinged to the mounting plate, the bottom of the pair of claw plates is provided with claw heads for clamping the two side edges of the bottom of the cable protection cover, the opening mechanism further comprises a pair of wedge blocks fixedly arranged on the inner side of the pair of claw plates, a first sliding block matched with the pair of wedge blocks for opening the pair of claw plates to expand the cable protection cover, and a driving member fixedly arranged on the mounting plate for driving the movement of the first sliding block.

[0009] Further, the first sliding block is fixedly provided with a second sliding block on the side surface, and the bottom of the second sliding block is provided with an elastic pressing block for abutting against the top of the cable protection cover.

[0010] Further, a first elastic element is fixedly arranged between the pair of claw plates.

[0011] Further, an electric heating plate is fixedly arranged on the inner side surface of the pair of claw plates.

[0012] Further, a second operating rod is further provided, and a C-shaped operating head is arranged on the top of the second operating rod, and a plurality of operating holes matched with the operating head are arranged on the two sides of the mounting plate.

[0013] According to the third aspect of the application, an installation method using the above installation tool is provided, characterized in that, specifically comprising the following steps: Step S1, initial state, the driving end of the driving member is withdrawn, and the first sliding block is located at the highest position; at this time, the insulation protection cover is arranged between the pair of claw plates, and the claw heads at the bottom of the pair of claw plates are clamped into the two side edges of the bottom of the cable protection cover; Step S2, the driving member drives the first sliding block to descend, the first sliding block extrudes the pair of wedge blocks, so that the pair of claw plates rotates outward around the hinge point, thereby opening the bottom of the cable protection cover; Step S3: Use the first operating lever to lift the insulating protective cover to the installation position, so that the porcelain insulator and cable are aligned with the insulating protective cover and inserted into the interior of the insulating protective cover. In step S4, the driving component drives the first slider to rise, and the insulating protective cover gradually adheres to the porcelain insulator and cable under its own elastic force. When the insulating protective cover is completely adhered to the porcelain insulator and cable, the first operating lever is moved downward, so that the claws at the bottom of the pair of claw plates disengage from the bottom sides of the cable protective cover. Finally, the first operating lever is moved upward until the insulating protective cover is completely removed, and the installation is completed.

[0014] The beneficial effects of this invention are: 1. This invention achieves comprehensive protection for the porcelain insulator and cable connection points through interconnected porcelain insulator protective covers, a first-level cable protective cover, and a second-level cable protective cover. This effectively blocks the intrusion of contaminants such as dust, bird droppings, rain, and snow, improving safety and service life. Simultaneously, a flexible connector is installed between the first-level and second-level cable protective covers. Through a multi-stage segmented design and the flexible connector, it can adapt to the sag curvature of the cables on both sides and possesses a certain degree of flexibility, improving the fit of the insulation protective cover and effectively preventing loosening and detachment. Furthermore, the flexible connector can accommodate the displacement of the cable under thermal expansion and contraction or wind force, preventing the protective cover from breaking due to rigid constraints.

[0015] 2. The installation fixture and method of this invention make the installation of the insulating protective cover simpler and faster. The installation fixture uses the cooperation of a first slider and a pair of wedge blocks to open the bottom of the insulating protective cover, making the installation process more stable and reducing errors and difficulties. At the same time, the elastic pressure block further ensures the stability during installation, preventing radial runout of the insulating protective cover when it elastically resets, which would affect the final installation accuracy. In addition, the heating plate can adapt to installation in extremely cold climates, preventing the insulating protective cover material from becoming less tough due to temperature, thus preventing cracking during the opening and installation process. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0017] Figure 1 This is a schematic diagram of the overall structure of the insulating protective cover of the present invention.

[0018] Figure 2 This is a schematic diagram of the bottom structure of the insulating protective cover of the present invention.

[0019] Figure 3 This is a schematic diagram of the elastic snap-fit ​​structure of the present invention.

[0020] Figure 4 yesFigure 1 Sectional view at BB.

[0021] Figure 5 This is a schematic diagram of the overall structure of the installation tooling of the present invention.

[0022] Figure 6 This is a schematic diagram of the second operating lever structure of the present invention.

[0023] Figure 7 This is a schematic diagram of the insulating protective cover of the present invention being installed on the expansion mechanism.

[0024] Figure 8 This is a schematic diagram of the overall structure of the spreading mechanism of the present invention.

[0025] Figure 9 This is a side view of the spreading mechanism of the present invention.

[0026] Figure 10 yes Figure 9 Sectional view at BB.

[0027] Figure 11 This is a schematic diagram of the initial state of the spreading mechanism of the present invention.

[0028] Figure 12 This is a schematic diagram of the spreading mechanism of the present invention when it is spread open.

[0029] Explanation of reference numerals in the attached figures: 1. Porcelain insulator protective cover; 2. First-level cable protective cover; 3. Flexible connector; 4. Second-level cable protective cover; 5. Elastic buckle; 501. Cable trough; 502. Butt joint edge; 503. Elastic slit; 504. Limiting stop bar; 6. First operating lever; 7. Mounting plate; 701. Operating hole; 8. Spreading mechanism; 801. Claw plate; 802. Wedge block; 803. First slider; 804. Mounting base; 805. Driving component; 806. Driving power supply; 807. Claw head; 808. Heating plate; 809. Heating plate power supply; 810. Elastic pressure block; 811. First elastic element; 812. Second elastic element; 813. Guide post; 814. Second slider; 815. Arc-shaped surface; 816. Sliding groove; 9. Second operating lever; 901. Operating head. Detailed Implementation

[0030] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0031] Example 1: Please refer to Figures 1 to 4As shown, this embodiment uses an integrated insulating protective cover for overhead cables. This integrated insulating protective cover is a semi-enclosed cover with a closed top and open bottom and sides, including a porcelain insulator protective cover 1, cable protective covers (2, 4), and flexible connectors 3. The porcelain insulator protective cover 1 is adapted to the shape of the top of the porcelain insulator to fit the top of the insulator. The cable protective covers and flexible connectors 3 are located on both sides of the porcelain insulator protective cover 1 to cover the cable. Specifically, the cable protective covers (2, 4) include a first-level cable protective cover 2 and a second-level cable protective cover 4. The cable protective covers (2, 4) are inverted U-shaped covers, with the openings gradually widening from top to bottom. The first-level cable protective cover 2 is fixedly connected to and communicates with both sides of the porcelain insulator protective cover 1, and the first-level cable protective cover 2 and the second-level cable protective cover 4 are connected by the flexible connectors 3. The elastic clips 5 of the first-level cable protection cover 2 and the elastic clips 5 of the second-level cable protection cover 4 are vertically aligned to compensate for the height difference 'a' of the cable sag, ensuring that the elastic clips 5 are securely fastened to the wire. The height difference 'a' ranges from 10mm to 30mm. The flexible connector 3 is a corrugated tube with an open bottom. The flexible connection of the corrugated tube can accommodate the expansion and contraction of the cable under extreme temperature conditions and adapt to the bending curvature of the cable, making it applicable to regions with different climates. In this embodiment, the cable protection cover has two sections, and the flexible connector 3 has one section. In another embodiment, the number of cable protection covers and flexible connectors 3 can be further expanded according to the application scenario. A third-level cable protection cover can be selectively connected to the side of the second-level cable protection cover 4 away from the porcelain insulator protection cover 1 via the flexible connector 3.

[0032] The first-level cable protection cover 2 and the second-level cable protection cover 4 are provided with elastic clips 5 for securing cables. In this embodiment, the elastic clips 5 are inserts and are connected to the first-level cable protection cover 2 and the second-level cable protection cover 4 by separate molding and assembly. The contour of the connection between the first-level cable protection cover 2 and the second-level cable protection cover 4 and the elastic clips 5 is adapted to the outer contour of the elastic clips 5, and the elastic clips 5 are embedded inside the first-level cable protection cover 2 and the second-level cable protection cover 4. In another embodiment, the elastic clips 5 and the first-level cable protection cover 2 and the second-level cable protection cover 4 can also be manufactured by integral injection molding. The elastic clips 5 are provided with a cable groove 501 for accommodating cables and two downward-facing mating edges 502. The two mating edges 502 are flared, wider at the bottom and narrower at the top. The narrowest point between the two mating edges 502 forms an elastic slit 503 that communicates with the cable groove 501. The spacing of the elastic slits 503 is smaller than the cable diameter and allows the cable to be spread open and pass through. An upward-sloping stop bar 504 is installed at the entrance of the cable tray 501. The stop bar 504 is used to prevent the insulation protective cover from being blown away by the wind when the wind is strong. The stop bar 504 can also act as a hook to catch the cable and prevent it from falling off.

[0033] Example 2: Please refer toFigures 5 to 12 As shown, the installation fixture for the integrated insulating protective cover for overhead cables in this embodiment includes a first operating rod 6, a mounting plate 7, a spreading mechanism 8, and a second operating rod 9. The mounting plate 7 is fixedly welded to the top of the first operating rod 6, and the spreading mechanism 8 is fixedly mounted on the lower surface of the mounting plate 7 by bolts. In this embodiment, four sets of spreading mechanisms 8 are provided, which are used to spread open the first-level cable protective cover 2 and the second-level cable protective cover 4 on both sides of the porcelain insulator protective cover 1, respectively. In another embodiment, the number of spreading mechanisms 8 can be adjusted according to the number of cable protective covers. Five operating holes 701 are provided on each side of the mounting plate 7, and a C-shaped operating head 901 is provided on the top of the second operating rod 9. Inserting the operating head 901 into the operating hole 701 allows for auxiliary operation of the installation of the insulating protective cover by operating the second operating rod 9.

[0034] The spreading mechanism 8 includes a mounting base 804, a pair of claw plates 801, a pair of wedge blocks 802, a first slider 803, and a driving component 805. The mounting base 804 is fixedly mounted to the bottom of the mounting plate 7 by bolts. The driving component 805 is an electric telescopic cylinder, fixedly mounted on the lower surface of the mounting plate 7 and located above the mounting base 804. The driving component 805 is fixedly connected to a driving power supply 806. The mounting base 804 has a vertically penetrating sliding groove 816. The first slider 803 and a second slider 814 fixedly connected to the first slider 803 are slidably mounted in the sliding groove 816. The first slider 803 is connected to the output end of the driving component 805 and is driven to move up and down by the driving component 805. The pair of claw plates 801 are symmetrically arranged and hinged to the bottom of the mounting base 804. The pair of claw plates 801 are rectangular plates, and the bottom of the pair of claw plates 801 is provided with claw heads 807 for locking the bottom sides of the cable protection covers (2, 4). A pair of wedge blocks 802 are fixedly mounted on the inner surface of the upper end of a pair of claw plates 801. The pair of wedge blocks 802 are provided with a pair of opposing inclined surfaces 815, and the horizontal distance between the pair of inclined surfaces 815 gradually decreases from top to bottom. The bottom of the first slider 803 is arc-shaped and its width is greater than the minimum distance between the pair of inclined surfaces 815. Under the action of the driving member 805, the first slider 803 moves downward and comes into contact with the pair of inclined surfaces 815, thereby squeezing the pair of wedge blocks 802 to move to both sides and causing the pair of claw plates 801 to rotate outward around the hinge point, so that the cable protection cover (2, 4) is opened.

[0035] A first elastic element 811 is fixedly disposed between a pair of claw plates 801. The first elastic element 811 is connected to the inner surface of the pair of claw plates 801 to maintain the tendency of the pair of claw plates 801 to open. When the installation is completed, after the claw head 807 moves downward and disengages from the bottom sides of the cable protection cover (2, 4), the elastic force of the first elastic element 811 will open the pair of claw plates 801, making it easier for the installation fixture to remove the insulation protection cover. At the same time, when the claw head 807 is engaged with the bottom sides of the cable protection cover (2, 4), the elastic force of the first elastic element 811 is less than the force required for the deformation of the cable protection cover (2, 4), so the first slider 803 and a pair of wedge blocks 802 are also required to open the cable protection cover (2, 4). In addition, an electric heating plate 808 is fixedly disposed on the inner surface of the pair of claw plates 801, and an electric heating plate power supply 809 connected to the electric heating plate 808 is fixedly disposed on the outer surface of the pair of claw plates 801. In extremely cold weather, the electric heating plate 808 is activated to heat the cable protection cover (2, 4) to prevent the material of the cable protection cover (2, 4) from becoming less tough due to temperature, which could lead to cracking during the installation process.

[0036] A guide post 813 is fixedly installed at the bottom of the second slider 814. A second elastic element 812, which is a compression spring, is sleeved on the guide post 813. An elastic pressure block 810, which slides in cooperation with the guide post 813, is also sleeved at the lower end of the guide post 813. The elastic pressure block 810 is an elastic rubber block with an arc shape at the bottom that conforms to the shape of the top of the cable protection cover (2, 4). The elastic pressure block 810 is connected to the bottom of the second slider 814 through the second elastic element 812. When the first slider 803 and the second slider 814 move downward under the action of the driving member 805, the elastic pressure block 810 moves downward accordingly and abuts against the top of the cable protection cover (2, 4) to prevent it from jumping radially.

[0037] Example 3: This invention provides an installation method using the above-described installation fixture, as follows: In the initial state, under the action of the first elastic element 811, the pair of claw plates 801 open, the driving end of the driving member 805 retracts, and the first slider 803 is in the highest position.

[0038] Step S1: Place the insulating protective cover between a pair of claw plates 801, and overcome the elastic force of the first elastic element 811 to insert the claw heads 807 at the bottom of the pair of claw plates 801 into the bottom of the first-level cable protection cover 2 and the second-level cable protection cover 4.

[0039] In step S2, under extremely cold conditions, the heating plates 808 on the inner surface of a pair of claw plates 801 are activated to preheat the insulation protective cover and maintain the heating temperature at 30 degrees Celsius.

[0040] In step S3, the driving component 805 drives the first slider 803 and the second slider 814 to descend. The elastic pressure block 810 at the bottom of the second slider 814 first abuts against the top of the first-level cable protection cover 2 and the second-level cable protection cover 4. The bottom of the first slider 803 presses against a pair of wedge blocks 802. When the bottom of the first slider 803 contacts a pair of inclined surfaces 815, it starts to drive a pair of claw plates 801 to rotate outward around the hinge point, thereby opening up the bottom of the first-level cable protection cover 2 and the second-level cable protection cover 4.

[0041] In step S4, the insulating protective cover is lifted to the installation position using the first operating lever 6. During the lifting and alignment process, the operating head 901 of the second operating lever 9 is inserted into the operating hole 701 of the mounting plate 7 for auxiliary operation until the porcelain insulator and cable are aligned with the insulating protective cover and inserted into the interior of the insulating protective cover.

[0042] In step S5, the driving component 805 drives the first slider 803 and the second slider 814 to rise. Under its own elastic force, the insulating protective cover gradually comes into contact with the porcelain insulator and the cable, and drives a pair of claw plates 801 to rotate inward around the hinge point. The elastic pressure block 810, under the action of the second elastic element 812, keeps pressing down on the top of the first-level cable protective cover 2 and the second-level cable protective cover 4. After the insulating protective cover is completely in contact with the porcelain insulator and the cable, the first operating lever 6 is moved downward, so that the claws 807 at the bottom of the pair of claw plates 801 disengage from the bottom of the first-level cable protective cover 2 and the second-level cable protective cover 4. The pair of claw plates 801 are pushed outward under the action of the first elastic element 811. Finally, the first operating lever 6 is moved upward until the insulating protective cover is completely removed, completing the installation.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated insulating protective cover for overhead cables, comprising a pin insulator cover (1) for wrapping around the top of a pin insulator, said pin insulator cover (1) being a semi-enclosed cover body closed at the top end and open at the lower end and at both sides, characterized in that: The cable protection cover (2, 4) is provided with a plurality of elastic buckles (5) for clamping cables, the elastic buckle (5) is provided with a wire slot (501) for accommodating cables and two butt edges (502) with openings downward, the elastic buckle (5) is provided with a limiting baffle (504) upwardly arranged at the position of the wire slot (501).

2. The integral insulating cover for overhead cables as claimed in claim 1, wherein: The axis of the elastic buckle (5) of the first-stage cable protection cover (2) and the elastic buckle (5) of the second-stage cable protection cover (4) is provided with a height difference a in the vertical direction for compensating the sag of the cable.

3. The integral insulating cover for overhead cables as claimed in claim 1, wherein: The first operating rod (6), the mounting plate (7) fixedly arranged at the top of the first operating rod (6), and the plurality of opening mechanisms (8) for opening the cable protection cover (2, 4) fixedly arranged on the mounting plate (7) are included, the opening mechanism (8) includes a pair of claw plates (801) hingedly arranged on the mounting plate (7), the bottom of the pair of claw plates (801) is provided with a claw head (807) for clamping the two side edges of the bottom of the cable protection cover (2, 4), the opening mechanism (8) further includes a pair of wedge-shaped blocks (802) fixedly arranged on the inner side of the pair of claw plates (801), a first sliding block (803) for opening the pair of claw plates (801) to make the cable protection cover (2, 4) open, and a driving member (805) fixedly arranged on the mounting plate (7) for driving the movement of the first sliding block (803).

4. The integral insulating cover for overhead cables according to claim 1 or 3, characterized in that: The side surface of the first sliding block (803) is fixedly provided with a second sliding block (814), and the bottom of the second sliding block (814) is provided with an elastic pressing block (810) for abutting against the top of the cable protection cover (2, 4).

5. A mounting tool for the integral insulating boot of claim 1, characterized in that: The first elastic element (811) is fixedly arranged between the pair of claw plates (801).

6. The mounting tool of claim 1 or 7, wherein: The inner side surface of the pair of claw plates (801) is fixedly provided with an electric heating plate (808).

7. The mounting tool of claim 7, wherein: The second operating rod (9) is further included, the top of the second operating rod (9) is provided with a C-shaped operating head (901), and a plurality of operating holes (701) matched with the operating head (901) are arranged on the two sides of the mounting plate (7).

8. The mounting tool of claim 7, wherein: The specific steps include the following steps:

9. The mounting tool of claim 7, wherein: In the initial state, the driving end of the driving member (805) is retracted, and the first sliding block (803) is located at the highest position; at this time, the insulating protection cover is arranged between the pair of claw plates (801), and the claw head (807) at the bottom of the pair of claw plates (801) is clamped into the two side edges of the bottom of the cable protection cover (2, 4); 10. A mounting method using the mounting tool according to claim 8, characterized by, ​ ​ Step S2, the driving member (805) drives the first slider (803) to descend, the first slider (803) extrudes a pair of wedge-shaped blocks (802), so that a pair of jaw plates (801) rotate outward around the hinge point, thereby supporting the bottom of the cable protection cover (2, 4); Step S3, the insulating protective cover is lifted to the installation position through the first operating lever (6), so that the porcelain bottle and the cable are aligned with the insulating protective cover and are clamped into the insulating protective cover; Step S4, the driving member (805) drives the first slider (803) to ascend, the insulating protective cover gradually adheres to the porcelain bottle and the cable under the action of its own elastic force, when the insulating protective cover completely adheres to the porcelain bottle and the cable, the first operating lever (6) is operated to move downward, so that the claw head (807) at the bottom of the pair of jaw plates (801) is separated from the two side edges of the bottom of the cable protection cover (2, 4), finally the first operating lever (6) is operated to move upward until completely withdrawing from the insulating protective cover, the installation is completed.

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