Cross arm shielding cover for uninterruptible power operation

Abstract

The utility model relates to a cross arm shielding cover for uninterruptible power operation, which comprises a cross arm shielding cover main body, the cross arm shielding cover main body comprises a first cross arm shielding cover and a second cross arm shielding cover, the second cross arm shielding cover is located at the inner side of the first cross arm shielding cover and is in sliding connection with the first cross arm shielding cover, at least one side of the second cross arm shielding cover is provided with a groove, and the groove is located in the first cross arm shielding cover. A plurality of meshing teeth which are linearly distributed are arranged in the groove; the limiting stopper structure comprises a side cap and a meshing piece, the second cross arm shielding cover is meshed with the meshing piece through meshing teeth, a shaft column rotatably connected with the first cross arm shielding cover is arranged between the meshing piece and the side cap, and a spring is connected to the outer side of the shaft column in a sleeving mode. According to the cross arm shielding cover for operation without power failure, the second cross arm shielding cover can be telescopically adjusted relative to the first cross arm shielding cover, the adaptability and the universality are high, compared with a traditional integrated product with the same length, the space occupation rate is small and carrying is convenient when the cross arm shielding cover is contracted, and accidental loosening is avoided through a mechanical locking mode of meshing teeth and springs.

Description

Technical Field

[0001] This utility model relates to the technical field of safety protection equipment for power system operations, specifically a crossarm shield for live-line work. Background Technology

[0002] Crossarm shielding covers are key insulating and protective equipment used to isolate live crossarms during live-line work in power distribution networks. By covering the surface of the crossarm to form a physical isolation barrier, they can effectively reduce the risk of workers coming into contact with live parts.

[0003] Currently, most mainstream products on the market adopt standardized size designs, that is, prefabricated fixed-size shielding covers based on common crossarm specifications. This type of design is based on statistical data of typical power lines for product modeling. However, in actual applications, it has been found that there are significant structural differences in crossarms in different voltage levels (such as 10kV and 35kV systems), different regional power grids (such as coastal and inland areas), and special line scenarios (such as long-span sections and old line renovation sections). Existing technology provides a series of products with different specifications for users to choose from, which is not versatile enough. When the actual size of the crossarm exceeds the design range of the shielding cover, the shielding cover often cannot completely cover the crossarm. Therefore, it is urgent to develop a crossarm shielding cover with size adaptive adjustment function, so that it can be compatible with the geometric characteristics of crossarms of different specifications, and improve the versatility of the shielding device while ensuring insulation performance. Utility Model Content

[0004] Based on the above description, this utility model provides a crossarm shield for uninterrupted power supply operations, which solves the technical problems pointed out in the background art.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A crossarm shield for live-line work, comprising:

[0006] The main body of the crossarm shield includes a first crossarm shield and a second crossarm shield. The second crossarm shield is located inside the first crossarm shield and is slidably connected to the first crossarm shield. At least one side of the second crossarm shield has a groove, and a plurality of linearly distributed meshing teeth are provided in the groove.

[0007] The limiter structure includes a side cap and a meshing member. The second crossarm shield meshes with the meshing member through meshing teeth. A shaft column that is rotatably connected to the first crossarm shield is provided between the meshing member and the side cap. A spring is sleeved on the outside of the shaft column.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the bottom of the first crossarm shield is provided with an arc portion, and the bottom of the second crossarm shield is provided with a matching portion adapted to the arc portion, wherein the arc portion and the matching portion slide and support each other.

[0010] Furthermore, a hollow cavity is provided on the side of the side cap near the first crossarm shield, and the spring is located in this hollow cavity.

[0011] Furthermore, the outer side of the first crossarm shield is provided with mounting holes, the number of which is the same as the number of shafts, and the shafts are rotatably connected to the first crossarm shield through the mounting holes.

[0012] Furthermore, the outer side of the side cap is provided with a plurality of protrusions arranged in a circumferential array.

[0013] Furthermore, there are two sets of both the groove and the limiter structure, with the two sets of grooves symmetrically distributed on the front and rear side walls of the second crossbeam shield.

[0014] Furthermore, a handle is fixed to the first crossarm shield.

[0015] Furthermore, a marking part is provided on the outer side of the second crossarm shield, and a limit block is integrally connected to the second crossarm shield.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0017] The crossarm cover for live-line work has a second crossarm cover that is telescopic and adjustable compared to the first crossarm cover. It is highly adaptable and versatile. Compared to traditional integrated products of the same length, it occupies less space when retracted and is easy to carry. The mechanical locking method of the meshing teeth and springs prevents accidental loosening. Attached Figure Description

[0018] Figure 1 A schematic diagram of the structure of a crossarm shield for uninterrupted power supply work provided in this embodiment of the utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of the exploded structure;

[0020] Figure 3 This is a schematic diagram of the structure of the second crossbeam shield and limiter in an embodiment of this utility model;

[0021] Figure 4 This is a schematic diagram of the limiter structure in an embodiment of the present invention.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Crossarm shield body; 11. First crossarm shield; 111. Arc portion; 12. Second crossarm shield; 121. Matching portion; 13. Groove; 14. Engaging teeth; 15. Mounting hole; 16. Marking portion; 17. Limiting block; 2. Limiter structure; 21. Side cap; 22. Engaging part; 23. Shaft; 24. Spring; 25. Hollow cavity; 3. Handle. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] like Figure 1-4 As shown in this embodiment, a crossarm shield for live-line work can be directly understood as a crossarm shield. It is a key insulating and protective device used to isolate live crossarms during live-line work. The crossarm shield includes a crossarm shield body 1 and a limiter structure 2. The crossarm shield body 1 includes a first crossarm shield 11 and a second crossarm shield 12. Specifically, the first crossarm shield 11 and the second crossarm shield 12 are nested and slidably connected. The second crossarm shield 12 is located inside the first crossarm shield 11 and is slidably connected to the first crossarm shield 11. In use, the position of the second crossarm shield 12 is adjusted to achieve so-called telescopic adjustment, thereby controlling the overall length and improving its versatility.

[0026] It should be noted that at least one side of the second crossarm shield 12 is provided with a groove 13, which extends along its length and has the same length as the second crossarm shield 12. Multiple meshing teeth 14 are fixedly arranged in the groove 13 in a linearly distributed manner at equal intervals for cooperating with a component in the limiter structure 2. In addition, the thickness of the front and rear side walls of the second crossarm shield 12 is preferably one times the thickness of the top wall of the second crossarm shield 12 to meet the design requirements of the groove 13. The bottom of the first crossarm shield 11 is provided with an arc portion 111, and the bottom of the second crossarm shield 12 is provided with a matching portion 121 adapted to the arc portion 111. The arc portion 111 and the matching portion 121 slide and support each other. In an optional design, the contact surfaces of the two are coated with a wear-resistant insulating coating to ensure smooth sliding and stable insulation performance.

[0027] As for the limiter structure 2, it includes a side cap 21 and a meshing member 22. The second crossarm shield 12 meshes with the meshing member 22 through meshing teeth 14. A shaft 23 that is rotatably connected to the first crossarm shield 11 is provided between the meshing member 22 and the side cap 21. A spring 24 is sleeved on the outside of the shaft 23.

[0028] The rotatable connection between the first crossarm shield 11 and the shaft 23 is described as follows: The outer side of the first crossarm shield 11 is provided with mounting holes 15. The number of mounting holes 15 is the same as the number of shafts 23, and the diameters of the two are equal, so that the shaft 23 can be rotatably connected to the first crossarm shield 11 through the mounting holes 15.

[0029] It should be noted that a hollow cavity 25 is provided on the side of the side cap 21 near the first crossarm shield 11, and the spring 24 is located in this hollow cavity 25. In this way, the spring 24 can be protected and the external environment can be avoided from affecting the performance of the spring 24. The spring 24 is preferably located between the first crossarm shield 11 and the side cap 21. The preload of the spring 24 can prevent the side cap 21 and the meshing member 22 from rotating at will, so that the meshing teeth 14 and the meshing member 22 are always engaged to achieve locking. In addition, the outer side of the side cap 21 is provided with multiple protrusions arranged in a circumferential array. During precision adjustment, the protrusions can facilitate the operation of the worker, that is, the worker can adjust by rotating the side cap 21.

[0030] To ensure the limiting capability, in one embodiment, there are two sets of grooves 13 and limiter structures 2, with the two sets of grooves 13 symmetrically distributed on the front and rear side walls of the second crossbeam shield 12.

[0031] Based on the above design, auxiliary functions are also designed. Specifically, firstly, a handle 3 made of non-slip rubber is fixed to the first crossarm shield 11 for easy gripping and installation by the operator; secondly, a marking part 16 is provided on the outer side of the second crossarm shield 12 to... Figure 2 For reference viewing, the distance between the marking part 16 and the left side of the second crossarm shield 12 is two centimeters, which is used to warn the operator that the second crossarm shield 12 is about to separate from the first crossarm shield 11. A limiting block 17 is integrally connected to the second crossarm shield 12. The limiting block 17 is specifically located on the rightmost side of the upper surface of the second crossarm shield 12, and its right side is flush with the right side of the second crossarm shield 12. It should also be noted that the horizontal height of the upper surface of the limiting block 17 is higher than the horizontal height of the upper surface of the first crossarm shield 11. In this way, the second crossarm shield 12 can be moved by pulling it through the limiting block 17, and the second crossarm shield 12 can be prevented from being completely inserted into the first crossarm shield 11.

[0032] Based on the above design, the operating steps for the crossarm shielding cover used for live-line work are as follows:

[0033] Initially, the second crossarm shield 12 is completely retracted into the first crossarm shield 11. In addition, the preload provided by the spring 24 in the limiter structure 2 prevents the side cap 21 and the engaging member 22 from rotating freely, while the engaging teeth 14 and the engaging member 22 are always engaged to achieve locking, that is, the limiter structure 2 is in the locked state.

[0034] When adjusting the length, if a quick and direct adjustment is needed, the gripping space provided by the limit block 17 can be used to pull the second crossarm cover 12 out as a whole to adjust the crossarm cover for uninterrupted power supply. If a more precise adjustment is needed, the side cap 21 can be rotated to make the shaft 23 drive the meshing part 22 to rotate, and then the meshing teeth 14 can drive the second crossarm cover 12 to extend and retract as a whole to adjust the crossarm cover for uninterrupted power supply.

[0035] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A crossarm shield for uninterrupted power supply operations, characterized in that, include: The main body (1) of the crossarm shield includes a first crossarm shield (11) and a second crossarm shield (12). The second crossarm shield (12) is located inside the first crossarm shield (11) and is slidably connected to the first crossarm shield (11). At least one side of the second crossarm shield (12) is provided with a groove (13) and a plurality of linearly distributed meshing teeth (14) are provided in the groove (13). The limiter structure (2) includes a side cap (21) and a meshing member (22). The second crossarm shield (12) meshes with the meshing member (22) through meshing teeth (14). A shaft (23) rotatably connected to the first crossarm shield (11) is provided between the meshing member (22) and the side cap (21). A spring (24) is sleeved on the outside of the shaft (23).

2. The crossarm shielding cover for live-line work according to claim 1, characterized in that: The bottom of the first crossarm shield (11) is provided with an arc portion (111), and the bottom of the second crossarm shield (12) is provided with a matching portion (121) that is adapted to the arc portion (111). The arc portion (111) and the matching portion (121) slide and support each other.

3. A crossarm shielding cover for live-line work according to claim 2, characterized in that: The side cap (21) has a hollow cavity (25) on the side near the first crossarm shield (11), and the spring (24) is located in this hollow cavity (25).

4. A crossarm shielding cover for live-line work according to claim 3, characterized in that: The first crossarm shield (11) has mounting holes (15) on its outer side. The number of mounting holes (15) is the same as the number of shafts (23). The shafts (23) are rotatably connected to the first crossarm shield (11) through the mounting holes (15).

5. A crossarm shielding cover for uninterrupted power supply work according to claim 4, characterized in that: The outer side of the side cap (21) is provided with a plurality of protrusions arranged in a circumferential array.

6. A crossarm shielding cover for live-line work according to claim 1, characterized in that: There are two sets of grooves (13) and limiter structures (2), and the two sets of grooves (13) are symmetrically distributed on the front and rear side walls of the second crossbeam shield (12).

7. A crossarm shielding cover for live-line work according to claim 1, characterized in that: A handle (3) is fixed on the first crossarm shield (11).

8. A crossarm shielding cover for live-line work according to claim 1, characterized in that: A marking part (16) is provided on the outside of the second crossarm shield (12), and a limit block (17) is integrally connected to the second crossarm shield (12).

Images