Novel drop-type zinc oxide arrester

Abstract

The utility model provides a novel drop-type zinc oxide lightning arrester, which comprises a mounting frame and is characterized in that an insulating connecting frame structure is mounted at the upper part of the mounting frame; a first grounding static contact is arranged on the right side of the mounting rack; the right side of the first grounding static contact is connected with a second grounding static contact. The upper part of the second grounding static contact is provided with a zinc oxide lightning arrester. A movable connection contact frame structure is arranged at the upper part of the zinc oxide lightning arrester; a fixed contact frame structure is arranged at the upper part of the movable connection contact frame structure; and the upper part of the fixed contact frame structure is also provided with a high-voltage access point. According to the utility model, the jacking spring is utilized to conveniently play a downward jacking role on the movable rod, so that the stability when the first movable contact is inserted into the L-shaped slot is improved, and on the contrary, when the movable rod is pushed upwards, the second movable contact is conveniently taken out from the L-shaped slot.

Description

Technical Field

[0001] The utility model belongs to the technical field of lightning arresters, and in particular relates to a novel drop-type zinc oxide lightning arrester. Background Art

[0002] Zinc oxide arrester is an arrester with good protection performance. By utilizing the good nonlinear volt-ampere characteristics of zinc oxide, the current flowing through the arrester is extremely small (microampere or milliampere level) at normal working voltage; when overvoltage acts, the resistance drops sharply, discharging the overvoltage energy to achieve the protection effect. The difference between this type of lightning arrester and the traditional lightning arrester is that it has no discharge gap and uses the nonlinear characteristics of zinc oxide to achieve the function of current discharge and breaking. An existing drop-type zinc oxide lightning arrester includes an insulating support and a lightning arrester. The upper ends of the insulating support and the lightning arrester are respectively provided with an upper static contact and an upper moving contact. The upper static contact includes a conductive groove with an opening facing downward and two clamping members arranged opposite to the inner wall of the conductive groove. The clamping member includes a shell, a steel ball arranged in the shell and a compression spring. The shell is fixed to the inner side of the conductive groove by a bolt assembly. It has a step-shaped through hole. The steel ball is located in the large aperture section of the step-shaped through hole, and part of the sphere protrudes outside the small aperture section of the step-shaped through hole. One end of the compression spring contacts the steel ball, and the other end contacts the inner wall of the conductive groove. Both sides of the upper moving contact have recessed parts. During the rotational contact between the two sides of the upper moving contact and the steel ball, the steel ball falls into the recessed part to clamp the upper moving contact, and the stability at the moving contact connection is poor. Utility Model Content

[0003] In view of the above technical problems, the utility model provides a novel drop-type zinc oxide arrester, which has a simple structure and can increase the stability of the moving contact connection.

[0004] The technical solution is: a new type of drop-type zinc oxide lightning arrester, including a mounting frame, characterized in that an insulating connecting frame structure is installed on the upper part of the mounting frame; a first grounding static contact is arranged on the right side of the mounting frame; a second grounding static contact is connected to the right side of the first grounding static contact; a zinc oxide lightning arrester is arranged on the upper part of the second grounding static contact; a movable connecting contact frame structure is arranged on the upper part of the zinc oxide lightning arrester; a fixed contact frame structure is arranged on the upper part of the movable connecting contact frame structure; and a high-voltage access point is also arranged on the upper part of the fixed contact frame structure.

[0005] Preferably, the fixed contact frame structure includes a connecting plate, and an inverted U-shaped plate is arranged on the right side of the connecting plate; limit blocks are screwed on the front and rear sides of the lower middle part of the inverted U-shaped plate respectively; a movable rod is arranged on the upper part of the limit block, and the left end of the movable rod is axially connected to the inverted U-shaped plate; a second movable contact is axially connected to the right side of the movable rod, and the second movable contact is arranged in a round rod shape; a tightening spring is welded on the upper part of the movable rod; and the upper end of the tightening spring is in contact with the inner top of the inverted U-shaped plate.

[0006] Preferably, the movable connection contact frame structure comprises a first movable contact, the right side of which is connected to a connecting ring; an L-shaped slot is provided on the upper left side of the first movable contact, and the left side of the L-shaped slot is configured as a trumpet shape.

[0007] Preferably, the insulating connecting frame structure includes an insulating support, and the upper and lower outer parts of the insulating support are respectively sleeved with connecting seats; the connecting seats are respectively threaded with connecting bolts, and the outer sides of the connecting bolts are sleeved with insulating sheaths, and the connecting seats are respectively installed between the mounting frame and the connecting plate through the connecting bolts.

[0008] Compared with the prior art, the beneficial effects of the utility model are:

[0009] The utility model utilizes a tightening spring to conveniently tighten the movable rod downward, so as to increase the stability when the first movable contact is inserted into the L-shaped slot. Conversely, when the movable rod is pushed upward, the second movable contact can be conveniently taken out of the L-shaped slot.

[0010] In the utility model, when the second movable contact is installed, it is convenient to connect the second movable contact with the first movable contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] Figure 2 It is a structural schematic diagram of the insulating connecting frame structure of the utility model.

[0013] Figure 3 It is a structural schematic diagram of the movable connection contact frame structure of the utility model.

[0014] Figure 4 It is a structural schematic diagram of the fixed contact frame structure of the utility model.

[0015] In the figure:

[0016] 1. Mounting frame; 2. Insulating connecting frame structure; 21. Insulating pillar; 22. Connecting seat; 23. Connecting bolt; 24. Insulating sheath; 3. First grounding static contact; 4. Second grounding static contact; 5. Zinc oxide lightning arrester; 6. Movable connecting contact frame structure; 61. First movable contact; 62. Connecting ring; 63. L-shaped slot; 7. Fixed contact frame structure; 71. Connecting plate; 72. Inverted U-shaped plate; 73. Limiting block; 74. Movable rod; 75. Second movable contact; 76. Tightening spring; 8. High voltage access point. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings:

[0018] Example:

[0019] As attached Figure 1 and attached Figure 4 As shown, the utility model provides a new type of drop-type zinc oxide lightning arrester, including a mounting frame 1, characterized in that an insulating connecting frame structure 2 is installed on the upper part of the mounting frame 1; a first grounding static contact 3 is arranged on the right side of the mounting frame 1; a second grounding static contact 4 is connected to the right side of the first grounding static contact 3; a zinc oxide lightning arrester 5 is arranged on the upper part of the second grounding static contact 4; a movable connecting contact frame structure 6 is arranged on the upper part of the zinc oxide lightning arrester 5; a fixed contact frame structure 7 is arranged on the upper part of the movable connecting contact frame structure 6; a high-voltage access point 8 is also arranged on the upper part of the fixed contact frame structure 7; the fixed contact frame structure 7 includes a connecting plate 7 1. An inverted U-shaped plate 72 is provided on the right side of the connecting plate 71; a limit block 73 is screwed on the front and rear sides of the middle and lower part of the inverted U-shaped plate 72; a movable rod 74 is provided on the upper part of the limit block 73, and the left end of the movable rod 74 is axially connected to the inverted U-shaped plate 72; a second movable contact 75 is axially connected to the right side of the movable rod 74, and the second movable contact 75 is provided in a round rod shape; a tightening spring 76 is welded on the upper part of the movable rod 74; and the upper end of the tightening spring 76 is in contact with the inner top of the inverted U-shaped plate 72, and the tightening spring 76 is used to facilitate the downward tightening of the movable rod 74, so as to increase the stability of the first movable contact 61 during installation.

[0020] As attached Figure 3 As shown, in the above embodiment, specifically, the movable connection contact frame structure 6 includes a first movable contact 61, and a connecting ring 62 is connected to the right side of the first movable contact 61; an L-shaped slot 63 is provided on the upper left side of the first movable contact 61, and the left side of the L-shaped slot 63 is set to be a trumpet shape, which is convenient for connecting the second movable contact 75 with the first movable contact 61 when installing the second movable contact 75.

[0021] As attached Figure 2 As shown, in the above embodiment, specifically, the insulating connecting frame structure 2 includes an insulating support 21, and the upper and lower outer parts of the insulating support 21 are respectively sleeved with a connecting seat 22; the connecting seat 22 is respectively threaded with a connecting bolt 23, and the outer side of the connecting bolt 23 is sleeved with an insulating sheath 24, and the connecting seat 22 is respectively installed between the mounting frame 1 and the connecting plate 71 through the connecting bolt 23. The insulating sheath 24 can increase the protection effect of the connecting bolt 23, thereby increasing the insulation effect between the insulating support 21 and the mounting frame 1 and the connecting plate 71.

[0022] In the above embodiment, specifically, a high voltage access point 8 is installed on the upper left side of the inverted U-shaped plate 72 .

[0023] In the above embodiment, specifically, the first movable contact 61 is installed on the upper part of the zinc oxide arrester 5 .

[0024] How it works

[0025] During operation, the utility model can increase the protective effect of the connection of the connecting bolt 23 through the insulating sheath 24 when in use. When installing the first movable contact 61, a tool is inserted into the connecting ring 62 and pushed into the inverted U-shaped plate 72. Then, under the action of inertia, the L-shaped slot 63 is sleeved on the outside of the second movable contact 75, and the tightening spring 76 is used to push it into the vertical section of the L-shaped slot 63. On the contrary, when disassembly is required, the movable rod 74 can be pushed upward to pull the second movable contact 75 out of the vertical section in the L-shaped slot 63, so as to separate the zinc oxide lightning rod 5 to the right.

[0026] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A novel drop-type zinc oxide arrester, comprising a mounting frame (1), characterized in that: An insulating connection frame structure (2) is installed on the upper part of the mounting frame (1); a first grounding static contact (3) is arranged on the right side of the mounting frame (1); a second grounding static contact (4) is connected to the right side of the first grounding static contact (3); a zinc oxide lightning arrester (5) is arranged on the upper part of the second grounding static contact (4); a movable connection contact frame structure (6) is arranged on the upper part of the zinc oxide lightning arrester (5); a fixed contact frame structure (7) is arranged on the upper part of the movable connection contact frame structure (6); a high The fixed contact frame structure (7) comprises a connecting plate (71), and an inverted U-shaped plate (72) is arranged on the right side of the connecting plate (71); a limit block (73) is screwed on the front and rear sides of the middle and lower part of the inverted U-shaped plate (72); a movable rod (74) is arranged on the upper part of the limit block (73), and the left end of the movable rod (74) is axially connected to the inverted U-shaped plate (72); a second movable contact (75) is axially connected to the right side of the movable rod (74), and the second movable contact (75) is arranged in a round rod shape; the movable rod ( A tension spring (76) is welded on the upper part of the inverted U-shaped plate (74); and the upper end of the tension spring (76) contacts the inner top of the inverted U-shaped plate (72); the movable connection contact frame structure (6) includes a first movable contact (61), and the right side of the first movable contact (61) is connected to a connecting ring (62); the upper left side of the first movable contact (61) is provided with an L-shaped slot (63); the insulating connection frame structure (2) includes an insulating support (21), and the upper and lower outer parts of the insulating support (21) are respectively sleeved with A connecting seat (22); the connecting seat (22) is respectively threadedly connected with connecting bolts (23), and the outer side of the connecting bolts (23) is sleeved with an insulating sheath (24), and the connecting seat (22) is respectively installed between the mounting frame (1) and the connecting plate (71) through the connecting bolts (23), a high-voltage access point (8) is installed on the upper left side of the inverted U-shaped plate (72), the first movable contact (61) is installed on the upper part of the zinc oxide lightning arrester (5), and the left side of the L-shaped slot (63) is set to be a trumpet shape.

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