CN105185487B - A kind of protection of arrester frame - Google Patents

Abstract

The invention discloses a protective frame for a lightning arrester, which solves the technical problem that the umbrella skirt of the existing lightning arrester is easily damaged during the disassembly process. The upper frame is provided with a snap ring for clamping the upper end of the arrester, a movable link is connected between the snap ring and the upper frame, and a ring bracket is fixedly connected to the lower frame. A clamp for clamping the lower end of the arrester is provided on the ring support. The embodiment of the invention is applied in the disassembly and installation process of the lightning arrester.

Description

A lightning arrester protection frame

【Technical field】

The invention relates to a protection frame of a lightning arrester, which belongs to the technical field of lightning arresters.

【Background technique】

In the prior art, since zinc oxide arresters have good protection performance, zinc oxide arresters are often used as arresters. Zinc oxide arresters are composed of zinc oxide resistors and composite silicone rubber sheds. In order to ensure the working performance of zinc oxide arresters, regular Disassemble for performance test. Because the composite silicone rubber material is easy to age, it is often damaged by external force during the disassembly process, which affects the working performance of the zinc oxide arrester and shortens the service life of the arrester.

【Content of invention】

The problem to be solved by the present invention is to provide a protective frame for the arrester, which can prevent the shed of the arrester from being damaged during disassembly, ensure the working performance of the arrester, and prolong the service life of the arrester.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

A protective frame for a lightning arrester, comprising an upper frame, a lower frame and insulating rods connected between the upper frame and the lower frame, the upper frame is provided with a snap ring for clamping the upper end of the arrester, the snap ring is connected with the upper Movable connecting rods are connected between the frames, and a ring support is fixedly connected to the lower frame, and a clamp for clamping the lower end of the arrester is provided on the ring support.

The lightning arrester protection frame in the present invention is equipped with a lightning arrester inside, and when it is disassembled, the umbrella skirt of the lightning arrester will not be damaged by external force due to the action of the lightning arrester protection frame, thereby effectively ensuring the working performance of the lightning arrester and prolonging the use of the lightning arrester life.

The first specific embodiment: the clasp includes at least two cards that are open and closed, the two ends of the cards are bent outward to form mounting ears, and the adjacent mounting ears are connected by bolts. Such design facilitates the installation and disassembly of the upper end of the arrester.

The second specific embodiment: the clamp includes two sets of clamping parts fixedly connected to the ring bracket, the clamping part includes an adjusting bolt and a clamping block, the adjusting bolt is connected with the clamping block, and the adjusting bolt Drive the movement of the clamping block to clamp the lower end of the arrester. Such design facilitates the installation and disassembly of the lower end of the arrester.

Third specific embodiment: trapezoidal teeth are provided on the inner wall of the clamping block. Such a design enhances the firmness of the clamping portion clamping the lower end of the arrester.

Fourth specific embodiment: the inner wall of the card is provided with a rubber pad. Such a design can effectively protect the arrester from being pinched and damaged by the snap ring.

Fifth specific embodiment: the upper frame is also provided with lifting lugs. Such a design facilitates the lifting of the arrester when it is disassembled and installed.

The sixth specific embodiment: the two ends of the insulating rod are tapped with external threads, and the two ends of the insulating rod are respectively connected to the upper frame and the lower frame through threads. With such a design, the insulating rod can be adjusted in length within a certain range to adapt to arresters of different lengths, which has strong versatility and is easy to disassemble and install.

These characteristics and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings.

【Description of drawings】

Below in conjunction with accompanying drawing, the present invention will be further described:

Fig. 1 is the assembly schematic diagram of arrester protective frame in the preferred embodiment of the present invention;

Fig. 2 is the front view of insulating rod in the preferred embodiment of the present invention;

Fig. 3 is a state diagram when the clasp is closed in the preferred embodiment of the present invention;

Fig. 4 is a state diagram when the clasp is opened in a preferred embodiment of the present invention;

Fig. 5 is the front view of the lower frame in the preferred embodiment of the present invention;

Fig. 6 is a partially enlarged view of A in Fig. 5;

Fig. 7 is a front view of the lifting lug in the preferred embodiment of the present invention.

【Detailed ways】

The technical solutions of the embodiments of the present invention will be explained and described below in conjunction with the accompanying drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, not all of them. Based on the examples in the implementation manners, other examples obtained by those skilled in the art without making creative efforts all belong to the protection scope of the present invention.

As shown in Figure 1, the lightning arrester protective frame in the preferred embodiment of the present invention comprises upper frame 1, lower frame 2 and insulating rod 3, and insulating rod 3 is connected between upper frame 1 and lower frame 2, is set on upper frame 1 There is a snap ring 4, a movable link 11 is connected between the snap ring 4 and the upper frame 1, and a ring holder 21 is fixedly connected on the lower frame 2, and a clamp is arranged on the ring holder 21.

As shown in Figures 2-4, the upper frame 1 in the preferred embodiment of the present invention is circular, and the two ends of the insulating rod 3 are tapped with external threads 31, and the upper frame 1 is provided with an upper threaded hole 12 and a first connecting ear. The plate 13 and the snap ring 4 include three arc-shaped cards 41, the two ends of the cards 41 are bent outward to form mounting ears 411, and a second connecting ear plate 42 is also provided in the middle of the card 41, and the outer part of the movable connecting rod 11 The end is connected with the first connecting lug 13 by bolts, and the inner end is connected with the second connecting lug 42 by bolts. The movable connecting rod 11 can drive the card 41 to make a semicircle in the vertical direction with the outer end of the movable connecting rod 11 as the center. There is also a rubber pad 43 on the inner wall of the card 41 to prevent the snap ring 4 from pinching and damaging the arrester when clamping the upper end of the arrester. Figure 3 shows that when the snap ring 4 is closed, the two adjacent mounting ears 411 are fixedly connected by bolts at this time, and Figure 4 shows that when the snap ring 4 is opened, the two adjacent mounting ears 411 are connected at this time. It is in a separated state, so that the upper end of the arrester can be removed from the snap ring 4 .

As shown in Figures 5-6, the lower frame 2 is circular, and the lower frame 2 is provided with a lower threaded hole 22, and the ring bracket 21 is provided with a clamp and a fixing block 221. The clamp includes two sets of clamping parts, wherein the clamping part Including the adjusting bolt 51 and the clamping block 52, the fixed block 221 is provided with a through hole, and one end of the adjusting bolt 51 passes through the through hole and is connected with the clamping block 52. After the installation is completed, the clamping part on the left side and the right side The clamping part forms a clamping space 6. When installing the lightning arrester, the lower end of the lightning arrester is located in the clamping space 6. Turn the adjusting bolts 51 on both sides to push the clamping blocks 52 on both sides to approach the center and clamp the lower end of the lightning arrester. The lower end of the arrester is a smooth cylinder. After being clamped, the lower end of the arrester will slide to break away from the clamp. In order to enhance the firmness of the arrester clamped by the clamp, trapezoidal teeth 521 are also provided on the inner wall of the clamping block 52 .

As shown in Figures 3 and 7, two lifting lugs 14 are arranged symmetrically on the upper frame 1, and perforations 141 are set on the lifting lugs 14, and the lightning arrester protection frame can be hung on the lifting device through the lifting lugs 14, so as to facilitate The lifting of the arrester during disassembly and installation.

Taking the installation of a zinc oxide arrester as an example, firstly, by rotating the movable connecting rod 11, the snap ring 4 on the upper frame 1 is turned to the open state, and the zinc oxide arrester is inserted from bottom to top, and the snap ring 4 is closed, and the snap ring is tightened by tightening the bolts. 4 Clamp the upper end of the zinc oxide arrester; secondly, insert the lower end of the zinc oxide arrester into the installation space 6 of the lower frame 2, rotate the lower frame 2, align the upper threaded hole 12 with the lower threaded hole 22, and place the insulating rod 3 The two ends are respectively screwed into the upper threaded hole 12 and the lower threaded hole 22, and the length of the insulating rod 3 can be adjusted within a certain range to adapt to zinc oxide arresters of different lengths. It has strong versatility and is easy to disassemble and install. Then tighten the adjusting bolts 51 on the fixture so that the two clamping blocks 52 fix the lower end of the zinc oxide arrester. Pass the lifting rope through the perforation 141 on the lifting lug 14, hang it on the lifting device, disassemble the connecting device on the upper part of the zinc oxide arrester, and then transfer the arrester protection frame together with the zinc oxide arrester to the ground by the lifting device for testing. Due to the protection of the protective frame of the arrester, the umbrella skirt on the zinc oxide arrester will not be damaged by external force during the disassembly process, thereby ensuring the working performance of the zinc oxide arrester and prolonging the service life of the zinc oxide arrester. After the test, the arrester protection frame together with the zinc oxide arrester is hoisted to the installation position. After the arrester is installed, the lower frame, insulating rod and upper frame are dismantled in sequence. Compared with the prior art, the arrester protection frame of the present invention improves the arrester Efficiency when dismantling and installing.

The structure of the zinc oxide arrester described in the present invention has been disclosed in the prior art, and will not be described in detail here.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, and those skilled in the art should understand that the present invention includes but is not limited to the accompanying drawings and the description in the above specific embodiments content. Any modifications that do not depart from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims (5)

1. a kind of protection of arrester frame, it is characterised in that：Including upper frame, lower frame and be connected to upper frame and lower frame it Between insulating bar, the upper frame is equipped with snap ring for the arrester upper end to be clamped, between the snap ring and upper frame It is connected with movable rod, ring support is fixedly connected on the lower frame, the ring support is equipped with for arrester lower end to be clamped Fixture, the snap ring include the card of at least two foldings connection, and the both ends outward bending of the card forms mounting ear, adjacent It is bolted between the mounting ear, the fixture includes two groups of clamping parts being fixedly connected in ring support, the clamping Portion includes adjusting bolt and grip block, and the adjusting bolt is connect with grip block, the adjusting bolt drive grip block movement with Clamp arrester lower end.

2. protection of arrester frame according to claim 1, it is characterised in that：The inner wall of the grip block is equipped with trapezoidal Tooth.

3. protection of arrester frame according to claim 1 or 2, it is characterised in that：The snap ring inner wall is equipped with rubber pad.

4. protection of arrester frame according to claim 1 or 2, it is characterised in that：It is additionally provided with lifting lug on the upper frame.

5. protection of arrester frame according to claim 1 or 2, it is characterised in that：The insulating bar both ends are tapped with outer spiral shell The both ends of line, the insulating bar are connected through a screw thread with upper frame and lower frame respectively.