Pole-mounted vacuum circuit breaker

Abstract

The utility model discloses a pole-mounted vacuum circuit breaker, which comprises a vacuum circuit breaker main body and two support plates distributed on two sides of the vacuum circuit breaker main body, fixing holes are arranged on the support plates in a penetrating manner, bolts are inserted in the fixing holes, nuts are in threaded connection with the bolts, the tops of the bolts are sleeved with upper sealing sleeves, and the upper sealing sleeves are sleeved with lower sealing sleeves. An upper sealing plug is installed on the top of the upper sealing sleeve, a first containing groove is formed in the upper sealing sleeve, the inner wall of the first containing groove extends inwards to form a first protruding ring, a second groove is formed in the outer side of the upper sealing sleeve, and a second protruding ring matched with the second groove is arranged on the inner side wall of the upper sealing plug. According to the utility model, through the arrangement of the upper sealing plug, the upper sealing sleeve, the lower sealing sleeve and the lower sealing plug, a sealing effect can be achieved, and the bolt and the nut are prevented from being in contact with rainwater to cause corrosion, so that the vacuum circuit breaker main body is ensured to be firmly fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a pole-mounted vacuum circuit breaker. Background Art

[0002] A pole-mounted vacuum circuit breaker is a high-voltage switchgear installed and operated on an electric pole. It is a type of circuit breaker. Since it is installed on an outdoor electric pole, the pole-mounted vacuum circuit breaker needs to have good environmental adaptability, including high temperature resistance, low temperature resistance, wind pressure resistance and other characteristics.

[0003] Most of the existing pole-mounted vacuum circuit breakers are fixed to the bracket on the pole by bolts. However, the bolts are exposed to wind, sun and rain for a long time and are prone to rust. After the bolts are rusted, not only will cracks, fatigue, looseness and other problems occur, making the pole-mounted vacuum circuit breaker not firmly fixed, but the rusted bolts are difficult to remove, increasing the difficulty of maintenance. Utility Model Content

[0004] The purpose of the utility model is to provide a pole-mounted vacuum circuit breaker to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pole-mounted vacuum circuit breaker, comprising a vacuum circuit breaker body and two support plates distributed on both sides of the vacuum circuit breaker body, the support plate being penetrated by a fixing hole, a bolt being inserted at the fixing hole, a nut being threaded on the bolt, an upper sealing sleeve being sleeved on the top of the bolt, an upper sealing plug being installed on the top of the upper sealing sleeve, a first accommodating groove being provided inside the upper sealing sleeve, an inner wall of the first accommodating groove extending inward to form a first convex ring, a second groove being provided on the outer side of the upper sealing sleeve, a second convex ring matching the second groove being provided on the inner side wall of the upper sealing plug, a secondary sealing sleeve being integrally formed with the bottom of the upper sealing plug matching the first accommodating groove, a first groove being provided on the outer side wall of the secondary sealing sleeve, a lower sealing sleeve being sleeved on the bottom of the bolt, and a lower sealing plug being installed with an interference fit at one end of the lower sealing sleeve.

[0006] As a preferred solution of the utility model, one end of the lower sealing plug is provided with a chamfer.

[0007] As a preferred solution of the utility model, an upper through hole is formed through the upper sealing sleeve, and the upper through hole is communicated with the first accommodating groove.

[0008] As a preferred solution of the utility model, a second accommodating groove is provided inside the second convex ring, and a lower through hole communicating with the second accommodating groove is penetrated through the lower sealing sleeve.

[0009] As a preferred embodiment of the present utility model, the upper sealing plug, the upper sealing sleeve, the lower sealing sleeve, the lower sealing plug and the secondary sealing sleeve are all made of rubber.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows: The upper sealing plug, the upper sealing sleeve, the lower sealing sleeve and the lower sealing plug provided by the present utility model can play a sealing role to prevent the bolts and nuts from contacting rainwater, resulting in rust, thereby ensuring the firm fixation of the vacuum circuit breaker body. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0012] Figure 2 is a partial sectional view of the present utility model;

[0013] Figure 3 of the present utility model Figure 2 is an enlarged view of part A in the present utility model;

[0014] Figure 4 is an exploded view of the present utility model;

[0015] Figure 5 is a structural schematic diagram of the upper sealing plug of the present utility model;

[0016] Figure 6 is a structural schematic diagram of the upper sealing sleeve of the present utility model.

[0017] In the figure: 1, vacuum circuit breaker body; 2, support plate; 3, upper sealing plug; 4, upper sealing sleeve; 5, lower sealing sleeve; 6, lower sealing plug; 7, first groove; 8, second groove; 9, second convex ring; 10, first convex ring; 11, secondary sealing sleeve; 12, first accommodation groove; 13, nut; 14, bolt; 15, chamfer; 16, second accommodation groove; 17, upper through hole; 18, lower through hole; 19, fixing hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figures 1 to 6, the present utility model provides a technical solution: a pole-mounted vacuum circuit breaker, including a vacuum circuit breaker main body 1 and two support plates 2 disposed on both sides of the vacuum circuit breaker main body 1. A fixing hole 19 is provided through the support plate 2, and a bolt 14 is inserted into the fixing hole 19. A nut 13 is threadedly connected to the bolt 14. The bolt 14 and the nut 13 cooperate to fix the vacuum circuit breaker main body 1 on the bracket of the electric pole. A top sealing sleeve 4 is sleeved on the top of the bolt 14. When the bolt 14 is tightened, the bolt 14 will press the top sealing sleeve 4, thereby sealing between the bolt 14 and the support plate 2. And the top sealing plug 3 can block rainwater to prevent the head of the bolt 14 from contacting rainwater and rusting. A top sealing plug 3 is installed on the top of the top sealing sleeve 4. A first accommodating groove 12 is provided inside the top sealing sleeve 4 for accommodating the head of the bolt 14. A first convex ring 10 is formed by the inner wall of the first accommodating groove 12 extending inwards. A second groove 8 is provided on the outer side of the top sealing sleeve 4. A second convex ring 9 is provided on the inner side wall of the top sealing plug 3 and is matched with the second groove 8. A secondary sealing sleeve 11 adapted to the first accommodating groove 12 is integrally formed at the bottom of the top sealing plug 3. The secondary sealing sleeve 11 can increase the contact area between the top sealing plug 3 and the top sealing sleeve 4, thereby improving the sealing performance between the top sealing plug 3 and the top sealing sleeve 4. By providing the second groove 8, the second convex ring 9, the first groove 7 and the first convex ring 10, not only can the top sealing plug 3 be fixed to prevent the top sealing plug 3 from separating from the top sealing sleeve 4, but also the sealing performance between the top sealing plug 3 and the top sealing sleeve 4 can be improved. A first groove 7 is provided on the outer side wall of the secondary sealing sleeve 11. A bottom sealing sleeve 5 is sleeved on the bottom of the bolt 14. When the bolt 14 and the nut 13 are tightened, the nut 13 presses the bottom sealing sleeve 5 against the bracket of the electric pole, thereby sealing between the bolt 14 and the bracket to prevent rainwater from contacting the screw of the bolt 14. An end of the bottom sealing sleeve 5 is installed with a bottom sealing plug 6 in an interference fit manner. The bottom sealing plug 6 is used to block the second accommodating groove 16 to prevent rainwater from contacting the bolt 14 through the second accommodating groove 16.

[0020] Wherein, one end of the bottom sealing plug 6 is provided with a chamfer 15, and the chamfer 15 is used to guide the bottom sealing plug 6 to facilitate the insertion of the bottom sealing plug 6 into the second accommodating groove 16.

[0021] Wherein, a top through hole 17 is provided through the top sealing sleeve 4. The top through hole 17 facilitates the bolt 14 to pass through the top sealing sleeve 4. The diameter of the top through hole 17 is equal to the diameter of the screw of the bolt 14. The diameter of the top through hole 17 is smaller than the diameter of the head of the bolt 14. The top through hole 17 communicates with the first accommodating groove 12.

[0022] Among them, a second receiving groove 16 is provided inside the second convex ring 9. The second receiving groove 16 is used to accommodate the screw rod of the bolt 14. A lower through hole 18 communicating with the second receiving groove 16 is provided through the lower sealing sleeve 5. The lower through hole 18 facilitates the bolt 14 to pass through the lower sealing sleeve 5, and the diameter of the lower through hole 18 is smaller than the diameter of the nut 13, so as to facilitate the nut 13 to press the lower sealing sleeve 5.

[0023] Among them, the materials of the upper sealing plug 3, the upper sealing sleeve 4, the lower sealing sleeve 5, the lower sealing plug 6 and the secondary sealing sleeve 11 are all rubber. Rubber is a material with high elasticity and plasticity, which enables rubber to closely fit on the surface of the object to be sealed, effectively filling tiny gaps and unevenness, so as to achieve the sealing effect. And rubber also has good aging resistance and corrosion resistance, and can maintain stable sealing performance in various harsh environments, which makes it not easy to appear problems such as aging, cracking or failure during long-term use.

[0024] Specifically, during installation, place the vacuum circuit breaker body 1 on the bracket of the electric pole, align the fixing hole 19 with the installation hole position on the bracket, then pass the bolt 14 through the upper sealing sleeve 4 and insert it into the fixing hole 19 and the installation hole position in sequence, then put the lower sealing sleeve 5 on the bolt 14, and screw the nut 13 onto the bolt 14. Tighten the bolt 14 and the nut 13. The bolt 14 cooperates with the support plate 2 to press the upper sealing sleeve 4 to seal between the bolt 14 and the support plate 2. The nut 13 cooperates with the bracket to press the lower sealing sleeve 5 to seal between the bolt 14 and the bracket. Finally, install the upper sealing plug 3 onto the upper sealing sleeve 4 and the lower sealing plug 6 onto the lower sealing sleeve 5 to cover the first receiving groove 12 and the second receiving groove 16 respectively, thereby preventing rainwater from contacting the bolt 14 and the nut 13 and causing them to rust.

[0025] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0026] In addition, the terms "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.

[0027] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "setting", "connection", "fixation", "swivel connection" and the like shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A pole-mounted vacuum circuit breaker, comprising a vacuum circuit breaker body (1) and two support plates (2) distributed on both sides of the vacuum circuit breaker body (1). A fixing hole (19) is provided through the support plate (2), and a bolt (14) is inserted into the fixing hole (19). A nut (13) is threadedly connected to the bolt (14), and it is characterized in that: A top of the bolt (14) is sleeved with an upper sealing sleeve (4), a top of the upper sealing sleeve (4) is installed with an upper sealing plug (3), an inner part of the upper sealing sleeve (4) is provided with a first accommodation groove (12), an inner wall of the first accommodation groove (12) extends inwards to form a first convex ring (10), an outer side of the upper sealing sleeve (4) is provided with a second groove (8), an inner side wall of the upper sealing plug (3) is provided with a second convex ring (9) which is matched with the second groove (8), a bottom of the upper sealing plug (3) is integrally formed with a secondary sealing sleeve (11) which is adapted to the first accommodation groove (12), an outer side wall of the secondary sealing sleeve (11) is provided with a first groove (7), a bottom of the bolt (14) is sleeved with a lower sealing sleeve (5), and an end of the lower sealing sleeve (5) is installed with a lower sealing plug (6) by interference fit.

2. The pole-mounted vacuum circuit breaker according to claim 1, wherein: One end of the lower sealing plug (6) is provided with a chamfer (15).

3. The pole-mounted vacuum circuit breaker according to claim 1, characterized in that: An upper through hole (17) is penetrated through the upper sealing sleeve (4), and the upper through hole (17) is communicated with the first accommodation groove (12).

4. The pole-mounted vacuum circuit breaker according to claim 1, characterized in that: A second accommodation groove (16) is arranged inside the second convex ring (9), and a lower through hole (18) which is communicated with the second accommodation groove (16) is penetrated through the lower sealing sleeve (5).

5. A pole-mounted vacuum circuit breaker according to claim 1, characterized in that: Materials of the upper sealing plug (3), the upper sealing sleeve (4), the lower sealing sleeve (5), the lower sealing plug (6) and the secondary sealing sleeve (11) are all rubber.

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