Aluminum spraying rubber sleeve for annular zinc oxide resistor disc

Abstract

The utility model relates to the technical field of resistor disc manufacturing for lightning arresters, in particular to an annular zinc oxide resistor disc aluminized rubber sleeve. Comprising a clamp tool and an annular zinc oxide resistor disc, the outer wall of the annular zinc oxide resistor disc is installed on the clamp tool through a rubber sleeve, a fixing screw is arranged in an inner hole of the annular zinc oxide resistor disc, one end of the fixing screw is in threaded connection with an upper silicon rubber plug, and the other end of the fixing screw is fixedly connected with a lower silicon rubber plug; the inner hole of the annular zinc oxide resistor disc is sealed through the fixing screw, the upper silicon rubber plug and the lower silicon rubber plug, so that the consequence that an aluminum electrode is sprayed on the wall of the inner hole due to the fact that a traditional plug is not firmly fixed is reduced; through cooperative use of the upper rubber ring, the lower rubber ring, the first clamping sleeve, the second clamping sleeve and other structures, the problem that the outer surface of the annular zinc oxide resistor disc is sprayed with an aluminum electrode due to falling of the annular zinc oxide resistor disc is solved, and the product percent of pass is affected.

Description

Technical Field

[0001] The utility model relates to the technical field of resistor manufacturing for lightning arresters, in particular to an annular zinc oxide resistor sprayed with aluminum rubber sleeve. Background Art

[0002] ZnO varistors are the core components of lightning arresters, and their electrical properties directly determine the performance of the device. Because varistors are typically connected in series in lightning arrester construction, their ends must exhibit excellent conductivity, while the sides must possess excellent insulation to prevent flashover due to insufficient withstand voltage during overvoltage conditions. Therefore, aluminum electrodes are often sprayed onto the ends of the varistors to provide conductivity, while an insulating layer is applied to the sides to enhance insulation.

[0003] At present, the industry in my country puts plastic rings on both ends of the varistor and then sprays aluminum electrodes. Due to the strong wind force in the process of spraying aluminum on the resistor, especially in the process of spraying aluminum on the annular resistor, the aluminum electrodes are often sprayed to the side of the resistor due to problems such as loose fixation of the rubber sleeve and the inner hole plug, causing the resistor to flash over and affect the product qualification rate. In addition, the service life of the rubber ring in this method is extremely short, which increases production costs. Since the annular resistor has two sides, this problem is more serious. Utility Model Content

[0004] The utility model aims to solve the deficiencies of the prior art and provides an annular zinc oxide resistor sheet with an aluminum-sprayed rubber sleeve, which can improve the product qualification rate.

[0005] In order to achieve the above technical objectives, the utility model proposes the following technical solution: an annular zinc oxide resistor with aluminum rubber spraying sleeve, including a fixture and an annular zinc oxide resistor, the outer wall of the annular zinc oxide resistor is installed on the fixture through a rubber sleeve, a fixing screw is provided in the inner hole of the annular zinc oxide resistor, one end of the fixing screw is threadedly connected to an upper silicone rubber plug, and the other end of the fixing screw is fixedly connected to a lower silicone rubber plug, and the outer diameters of the upper silicone rubber plug and the lower silicone rubber plug are not less than the diameter of the inner hole of the annular zinc oxide resistor.

[0006] Furthermore, the fixture tooling includes an upper plate and a lower plate, and a plurality of through holes are correspondingly opened on the upper plate and the lower plate. An upper rubber ring is embedded in the through hole of the upper plate, and a lower rubber ring is embedded in the through hole of the lower plate. The bottom of the upper rubber ring is fixedly connected to a first clamping sleeve, and the top of the lower rubber ring is fixedly connected to a second clamping sleeve, and the second clamping sleeve is located inside the first clamping sleeve.

[0007] Furthermore, grooves are provided on the outer rings of the upper rubber ring and the lower rubber ring, and the upper rubber ring and the lower rubber ring are respectively clamped in the through holes of the upper plate and the lower plate through the grooves.

[0008] Furthermore, the inner cavities of the first clamping sleeve and the second clamping sleeve are both truncated cone structures.

[0009] Furthermore, the four corners around the top of the lower plate are connected to the four corners around the upper plate by bolts.

[0010] Compared with the prior art, the beneficial effects produced by the present invention are: the present invention has a novel structure, ingenious conception, simple and convenient operation, and has the following advantages compared with the prior art: the present invention seals the inner hole of the annular zinc oxide resistor by fixing screws, upper silicone rubber plugs and upper silicone rubber plugs, reducing the consequence of the traditional plug being not firmly fixed, resulting in aluminum electrodes being sprayed on the inner hole wall, and improving the qualified rate of aluminum spraying of the product; through the coordinated use of structures such as the upper rubber ring, the lower rubber ring, the first clamping sleeve and the second clamping sleeve, the annular zinc oxide resistor can be clamped, which can reduce the annular zinc oxide resistor from falling off under the action of strong wind, resulting in aluminum electrodes being sprayed on the outer surface of the annular zinc oxide resistor, affecting the qualified rate of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0013] Figure 3 This is a schematic diagram of the cross-sectional structure of the fixture tooling of the present utility model;

[0014] Figure 4 This utility model Figure 3 Enlarged view of the structure at point B in the middle.

[0015] In the figure, 1. Fixture; 11. Upper plate; 12. Lower plate; 13. Through hole; 14. Upper rubber ring; 15. Lower rubber ring; 16. First clamping sleeve; 17. Second clamping sleeve; 18. Groove; 2. Annular zinc oxide resistor; 3. Fixing screw; 4. Upper silicone rubber plug; 5. Lower silicone rubber plug; 6. Bolt. DETAILED DESCRIPTION

[0016] The following are specific embodiments of the present invention, and the technical solutions of the present invention are further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0017] The utility model provides an annular zinc oxide resistor with an aluminum rubber sleeve, comprising a fixture 1 and an annular zinc oxide resistor 2. The outer wall of the annular zinc oxide resistor 2 is mounted on the fixture 1 through a rubber sleeve. A fixing screw 3 is provided in the inner hole of the annular zinc oxide resistor 2. One end of the fixing screw 3 is threadedly connected to an upper silicone rubber plug 4. The bottom of the upper silicone rubber plug 4 is provided with a threaded hole that is compatible with the external thread of the fixing screw 3. The other end of the fixing screw 3 is fixedly connected to a lower silicone rubber plug 5. The outer diameters of the upper silicone rubber plug 4 and the lower silicone rubber plug 5 are not less than the diameter of the inner hole of the annular zinc oxide resistor 2.

[0018] like Figure 1 and 2 As shown, the screw 3 is inserted into the inner hole of the annular zinc oxide resistor 2 and is threadedly connected and tightened with the screw 3 through the upper silicone rubber plug 4. The upper silicone rubber plug 4 and the lower silicone rubber plug 5 can be fixed in the inner hole of the annular zinc oxide resistor 2, and the inner hole of the annular zinc oxide resistor 2 is sealed. This can reduce the problem of the plug being blown off by the strong wind force during aluminum spraying, resulting in aluminum spraying onto the inner wall of the inner hole of the annular zinc oxide resistor 2, which leads to a decrease in the aluminum spraying qualification rate. Compared with traditional plugs, the service life of the upper silicone rubber plug 4 and the lower silicone rubber plug 5 can be significantly increased, and the production cost can be reduced.

[0019] The fixture tooling 1 includes an upper plate 11 and a lower plate 12, and a plurality of through holes 13 are correspondingly opened on the upper plate 11 and the lower plate 12. An upper rubber ring 14 is embedded in the through hole 13 of the upper plate 11, and a lower rubber ring 15 is embedded in the through hole 13 of the lower plate 12. A first clamping sleeve 16 is fixed to the bottom of the upper rubber ring 14, and a second clamping sleeve 17 is fixed to the top of the lower rubber ring 15. The second clamping sleeve 17 is located in the first clamping sleeve 16.

[0020] like Figure 3 and 4 As shown, the upper plate 11 is located on the top of the lower plate 12, and is used to fix the upper rubber ring 14 and the lower rubber ring 15 respectively, and at the same time limit the annular zinc oxide resistor 2. During installation, the annular zinc oxide resistor 2 is first placed in the second jacket 17 at the bottom of the lower rubber ring 15, and then the upper plate 11 is covered on the lower plate 12, so that the first jacket 16 is sleeved in the second jacket 17. During the downward movement of the first jacket 16, the second jacket 17 is promoted to be tightly attached to the outer wall of the annular zinc oxide resistor 2, clamping the annular zinc oxide resistor 2, which can prevent the annular zinc oxide resistor 2 from being installed unsecured due to deformation of the rubber sleeve during the spraying process, thereby spraying the aluminum electrode to the side of the annular zinc oxide resistor 2 when spraying, reducing the qualified rate of aluminum spraying.

[0021] The outer rings of the upper rubber ring 14 and the lower rubber ring 15 are both provided with grooves 18 , and the upper rubber ring 14 and the lower rubber ring 15 are respectively clamped in the through holes 13 of the upper plate 11 and the lower plate 12 through the grooves 18 .

[0022] like Figure 3 As shown, the upper rubber ring 14 and the lower rubber ring 15 are fixed in the through holes 13 of the upper plate 11 and the lower plate 12 respectively through the grooves 18 .

[0023] The inner cavities of the first clamping sleeve 16 and the second clamping sleeve 17 are both truncated cone structures.

[0024] like Figure 4 As shown, the inner cavity of the second clamping sleeve 17 is a truncated cone structure, which can help the annular zinc oxide resistor 2 enter the lower rubber ring 15; the inner cavity of the first clamping sleeve 16 is a truncated cone structure, which can help the first sleeve 16 enter the outer periphery of the second sleeve 17. As the first sleeve 16 moves downward, the second sleeve 17 is driven to move toward the annular zinc oxide resistor 2, so that the second sleeve 17 clamps the annular zinc oxide resistor 2.

[0025] The four corners around the top of the lower plate 12 are connected to the four corners around the upper plate 11 by bolts 6.

[0026] like Figure 3 As shown, the upper plate 11 and the lower plate 12 are detachably connected by bolts 6 .

[0027] Principle of use: When installing, first seal the inner hole of the annular zinc oxide resistor 2, insert the screw 3 into the inner hole of the annular zinc oxide resistor 2 and connect it to the screw 3 through the upper silicone rubber plug 4; then install the upper rubber ring 14 and the lower rubber ring 15 in the through-holes 13 of the upper plate 11 and the lower plate 12 respectively through the groove 18, then put the annular zinc oxide resistor 2 with the inner hole blocked into the second clamping sleeve 17 at the bottom of the lower rubber ring 15, and then cover the upper plate 11 on the lower plate 12 with the upper rubber ring 14 facing upwards (upper rubber ring 14 is placed on the lower plate 12). One side of the upper rubber ring 14 of the plate 11 and one side of the lower rubber ring 15 of the lower plate 12 are sprayed aluminum electrode surfaces). The first clamping sleeve 16 at the bottom of the upper rubber ring 14 is sleeved on the second clamping sleeve 17. When the first clamping sleeve 16 moves downward, the first clamping sleeve 16 squeezes the second clamping sleeve 17 to clamp the annular zinc oxide resistor 2. By changing the design of the plug and the rubber sleeve of the annular zinc oxide resistor 2, the utility model can improve the pass rate of the aluminum spraying process of the annular zinc oxide resistor 2 and at the same time increase the service life of the rubber sleeve.

[0028] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art may make various modifications, additions, or substitute similar methods to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A ring-shaped zinc oxide resistor with aluminum rubber coating, comprising a fixture (1) and a ring-shaped zinc oxide resistor (2), characterized in that: The outer wall of the annular zinc oxide resistor (2) is mounted on the fixture (1) through a rubber sleeve, and a fixing screw (3) is provided in the inner hole of the annular zinc oxide resistor (2), one end of the fixing screw (3) is threadedly connected to an upper silicone rubber plug (4), and the other end of the fixing screw (3) is fixedly connected to a lower silicone rubber plug (5), and the outer diameters of the upper silicone rubber plug (4) and the lower silicone rubber plug (5) are not less than the diameter of the inner hole of the annular zinc oxide resistor (2).

2. The annular zinc oxide resistor with aluminum-sprayed rubber sleeve according to claim 1, characterized in that: The fixture tooling (1) includes an upper plate (11) and a lower plate (12), and a plurality of through holes (13) are correspondingly opened on the upper plate (11) and the lower plate (12). An upper rubber ring (14) is embedded in the through hole (13) of the upper plate (11), and a lower rubber ring (15) is embedded in the through hole (13) of the lower plate (12). A first clamping sleeve (16) is fixed to the bottom of the upper rubber ring (14), and a second clamping sleeve (17) is fixed to the top of the lower rubber ring (15). The second clamping sleeve (17) is located in the first clamping sleeve (16).

3. The annular zinc oxide resistor with aluminum-sprayed rubber sleeve according to claim 2, characterized in that: The outer rings of the upper rubber ring (14) and the lower rubber ring (15) are both provided with grooves (18), and the upper rubber ring (14) and the lower rubber ring (15) are respectively clamped in the through holes (13) of the upper plate (11) and the lower plate (12) through the grooves (18).

4. The annular zinc oxide resistor with aluminum-sprayed rubber sleeve according to claim 2, characterized in that: The inner cavities of the first clamping sleeve (16) and the second clamping sleeve (17) are both truncated cone structures.

5. The annular zinc oxide resistor with aluminum-sprayed rubber sleeve according to claim 2, characterized in that: The four corners around the top of the lower plate (12) are connected to the four corners around the upper plate (11) by bolts (6).

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