Outdoor fixed lightning arrester

Abstract

The utility model relates to the technical field of lightning arresters, and discloses an outdoor fixed lightning arrester, which comprises a lightning arrester body, a mounting head is arranged on the lightning arrester body, an upper threaded column and a lower threaded column are respectively arranged on the mounting head, the outer surface of the upper threaded column and the outer surface of the lower threaded column are both in threaded connection with fixing nuts, and the outer surface of the upper threaded column and the outer surface of the lower threaded column are in threaded connection with the fixing nuts. The outer surface of the upper threaded column is in threaded connection with a shielding cover, a locking assembly is arranged between the shielding cover and the upper threaded column and comprises a spring, a moving block is fixedly installed at one end of the spring, and a locking rod is fixedly arranged in the moving block in a penetrating mode. An annular locking groove matched with the locking rod is formed in the outer surface of the upper threaded column. When the device is used, the locking rod on the shielding cover can be inserted into the upper threaded column under the cooperation of the spring and the moving block, so that the situation of looseness between the shielding cover and the upper threaded column can be reduced, and the service life of the device is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of surge arrester technology, and in particular to an outdoor fixed surge arrester. Background Technology

[0002] A surge arrester is an electrical device used to protect electrical equipment from high transient overvoltages and to limit the duration and amplitude of follow current. Surge arresters are sometimes also called overvoltage protectors or overvoltage limiters.

[0003] A utility model with publication number CN213522685U discloses an outdoor fixed surge arrester. Its structure includes a surge arrester body with an mounting head. The mounting head has an upper threaded post and a lower threaded post, each with a fixing nut. The upper threaded post is connected to an upper shielding cover via a threaded groove, and the lower threaded post is connected to a lower shielding cover via a threaded hole. When the outdoor fixed surge arrester is installed and used outdoors, the upper and lower shielding covers respectively shield the upper threaded post, lower threaded post, and fixing nut, preventing them from rusting due to long-term exposure to air and improving the protective effect of the connecting components during use.

[0004] Through the above technical solution, the inventors discovered at least the following problems: the shield and the threaded post are connected by threads. Since the surge arrester needs to be used outdoors for a long time, factors such as equipment shaking, outdoor temperature difference, wind and sand may cause the shield and the threaded post to loosen. Therefore, how to design an outdoor fixed surge arrester has become a problem that we need to solve. Utility Model Content

[0005] This utility model addresses the shortcomings of existing technologies by providing the following technical solution: an outdoor fixed surge arrester, comprising a surge arrester body: an mounting head is provided on the upper part of the surge arrester body, an upper threaded post and a lower threaded post are respectively provided on the mounting head, a fixing nut is threadedly connected to the outer surface of the upper threaded post and the lower threaded post, a shield is threadedly connected to the outer surface of the upper threaded post, and a locking component is provided between the shield and the upper threaded post;

[0006] The locking assembly includes a spring, one end of which is fixedly mounted with a movable block. A locking rod is fixedly inserted inside the movable block, and an annular locking groove adapted to the locking rod is formed on the outer surface of the upper threaded post.

[0007] As an improvement to the above technical solution, the number of mounting heads is two, and the two mounting heads are respectively welded to both ends of the surge arrester body, and the outer surfaces of the two mounting heads are respectively welded to the upper threaded post and the lower threaded post.

[0008] As an improvement to the above technical solution, the bottom of the shield is provided with an inner groove, and one end of the locking rod passes through the inner groove and is fixedly connected to a hand lever.

[0009] As an improvement to the above technical solution, the outer surface of the shield is provided with a waterproof layer.

[0010] As an improvement to the above technical solution, sliders are fixedly installed on both sides of the moving block, and the interior of the shield is provided with a sliding groove that matches the slider.

[0011] As an improvement to the above technical solution, an elastic rubber block is fixedly installed at the bottom of the shield, and the elastic rubber block can contact the fixing nut.

[0012] As an improvement to the above technical solution, the locking rod has a downward-sloping guide angle at one end near the upper threaded post.

[0013] The beneficial effects of this utility model are:

[0014] 1. When this utility model is in use, the locking rod on the shield can be inserted into the upper threaded column in cooperation with the spring and the moving block, thereby reducing the loosening between the shield and the upper threaded column and extending the service life of the equipment;

[0015] 2. When the cover needs to be removed, the operator can pull the lever to separate the locking rod from the annular locking groove inside the upper threaded column, and then rotate and unscrew the cover. When installing the cover, the upper threaded column can push the locking rod to move through the guide angle, so that the cover can be quickly connected to the cover. This allows the operator to quickly install and remove the cover, and the operation is simple and convenient. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a frontal cross-sectional view of the present invention.

[0018] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0019] Reference numerals in the attached drawings: 1. Surge arrester body; 2. Mounting head; 3. Upper threaded post; 4. Lower threaded post; 5. Fixing nut; 6. Shielding cover; 7. Locking assembly; 71. Spring; 72. Moving block; 73. Locking rod; 8. Hand lever; 9. Waterproof layer; 10. Sliding block; 11. Elastic rubber block; 12. Guide angle. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the following provides a more detailed description of the utility model. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the utility model.

[0021] like Figure 1-3 As shown, this utility model provides a technical solution: an outdoor fixed surge arrester, including a surge arrester body 1, an mounting head 2 is provided on the surge arrester body 1, an upper threaded post 3 and a lower threaded post 4 are respectively provided on the mounting head 2, the number of mounting heads 2 is two, the two mounting heads 2 are respectively welded to both ends of the surge arrester body 1, the outer surfaces of the two mounting heads 2 are respectively welded to the upper threaded post 3 and the lower threaded post 4, and the outer surfaces of the upper threaded post 3 and the lower threaded post 4 are threaded with fixing nuts 5.

[0022] Please refer to Figure 2 The outer surface of the threaded column 3 is threadedly connected to a shield 6. The outer surface of the shield 6 is provided with a waterproof layer 9. The waterproof layer 9 is made of a hydrophobic material, which is an aqueous solution with silane and siloxane as the main raw materials, providing excellent waterproofing. An elastic rubber block 11 is fixedly installed at the bottom of the shield 6. The elastic rubber block 11 can contact the fixing nut 5. After the shield 6 is installed, the elastic rubber block 11 on the shield 6 can tighten the fixing nut 5, thereby reducing the possibility of loosening of the fixing nut 5 connected to the threaded column 3.

[0023] Please refer to Figure 2 and Figure 3 A locking assembly 7 is provided between the shield 6 and the upper threaded post 3. The locking assembly 7 includes a spring 71, with a movable block 72 fixedly installed at one end of the spring 71. A locking rod 73 is fixedly inserted inside the movable block 72. A locking groove adapted to the locking rod 73 is formed on the outer surface of the upper threaded post 3. An inner groove is formed at the bottom of the shield 6. One end of the locking rod 73 passes through the inner groove and is fixedly connected to a pull rod 8. The pull rod 8 allows the operator to easily pull the locking rod 73 to move. Slider blocks 10 are fixedly installed on opposite sides of the movable block 72. A sliding groove adapted to the slider 10 is formed inside the shield 6. The slider 10 and the sliding groove can limit the movement range of the movable block 72 and make the movable block 72 move more smoothly. The locking rod 73 has a downward-sloping guide angle 12 at one end near the upper threaded post 3. When installing the shield 6, the upper threaded post 3 can push the locking rod 73 to move through the guide angle 12, so that the shield 6 can be quickly connected to the shield 6.

[0024] The implementation principle of this utility model is as follows: When in use, the shield 6 can shield the upper threaded post 3 and the fixing nut 5 connected to the upper threaded post 3, which can prevent the influence of sun and rain on the upper threaded post 3 and the fixing nut 5 connected to the upper threaded post 3. At the same time, the shield 6 can also shield the surge arrester body 1, the lower threaded post 4 and the fixing nut 5 connected to the lower threaded post 4 to a certain extent, thereby reducing the influence of sun and rain on the surge arrester body 1, the lower threaded post 4 and the fixing nut 5 connected to the lower threaded post 4 to a certain extent.

[0025] During use, the locking rod 73 on the shield 6 can be inserted into the upper threaded post 3 through the cooperation of the spring 71 and the moving block 72, thereby reducing the possibility of loosening between the shield 6 and the upper threaded post 3. When it is necessary to remove the shield 6, the operator only needs to pull the lever 8. The lever 8 can drive the locking rod 73 to move. The locking rod 73 can drive the moving block 72 to squeeze the spring 71 and separate it from the annular locking groove opened inside the upper threaded post 3. Then the operator can rotate and unscrew the shield 6. When installing the shield 6, the upper threaded post 3 can push the locking rod 73 to move through the guide angle 12, thereby allowing the shield 6 to be quickly connected to the shield 6. The operation is simple and convenient.

[0026] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. An outdoor fixed surge arrester, characterized in that, Includes a surge arrester body (1): The surge arrester body (1) is provided with an installation head (2), and the installation head (2) is provided with an upper threaded post (3) and a lower threaded post (4) respectively. The outer surfaces of the upper threaded post (3) and the lower threaded post (4) are threaded with a fixing nut (5). The outer surface of the upper threaded post (3) is threaded with a shield (6). A locking assembly (7) is provided between the shield (6) and the upper threaded post (3). The locking assembly (7) includes a spring (71), one end of which is fixedly mounted with a moving block (72), and a locking rod (73) is fixedly inserted inside the moving block (72). The outer surface of the upper threaded post (3) is provided with an annular locking groove that is adapted to the locking rod (73).

2. The outdoor fixed surge arrester according to claim 1, characterized in that: The number of mounting heads (2) is two. The two mounting heads (2) are respectively welded to both ends of the surge arrester body (1). The outer surfaces of the two mounting heads (2) are respectively welded to the upper threaded post (3) and the lower threaded post (4).

3. An outdoor fixed surge arrester according to claim 1, characterized in that: The bottom of the shield (6) is provided with an inner groove, and one end of the locking rod (73) passes through the inner groove and is fixedly connected to a hand lever (8).

4. An outdoor fixed surge arrester according to claim 1, characterized in that: The outer surface of the shield (6) is provided with a waterproof layer (9).

5. An outdoor fixed surge arrester according to claim 1, characterized in that: The movable block (72) is fixedly mounted with sliders (10) on both sides, and the shield (6) has a groove inside that matches the slider (10).

6. An outdoor fixed surge arrester according to claim 1, characterized in that: An elastic rubber block (11) is fixedly installed at the bottom of the shield (6), and the elastic rubber block (11) can contact the fixing nut (5).

7. An outdoor fixed surge arrester according to claim 1, characterized in that: The locking rod (73) has a downward-sloping guide angle (12) at one end near the upper threaded post (3).

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