A sealed vacuum circuit breaker

Abstract

The utility model discloses a sealed vacuum circuit breaker, comprising: a working box for installation, a sealed pole fixedly installed on the right side of the working box; and an external contact, the right side of the sealed pole is fixedly connected to the left side of the external contact, and a first clamp arm and a second clamp arm are arranged on the upper and lower sides of the middle part of the external contact, and the second clamp arm is located on the right side of the first clamp arm, a first slide groove is arranged in the middle part of the first clamp arm, and a connecting rod is arranged inside the first slide groove, and a first nut is installed on the upper end of the connecting rod, and a first protective cover and a second protective cover are installed on the right end of the external contact, and the second protective cover is located at the lower end of the first protective cover. The sealed vacuum circuit breaker is convenient for fixing the position of the protective device to avoid displacement, convenient for installing the protective device at the connection head to avoid wind and sun, and convenient for clamping and fixing the wires at the connection.

Description

Technical Field

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

[0002] Vacuum circuit breakers are electrical devices used to control and protect power systems. The external contacts of traditional sealed circuit breakers are directly exposed to the outside, which can easily cause the external contacts to rust or be damaged, and the wiring can easily fall off. Therefore, a protective device is set on the sealed vacuum circuit breaker to protect the external connector.

[0003] A sealed vacuum circuit breaker provided by announcement number CN 209641582 U includes a base and a working box, the working box is movably fixedly installed on the base through a slider, a clamp is provided between the working box and the base, a bending tube is provided at the upper end of the working box, a pole is welded at the rear end of the working box, an air pump is provided on one side of the pole on the working box, a motor is welded on the surface of the pole, and a cooling fan is connected to the output end of the motor inside the pole, a contact wall is welded on the upper end of the pole, an external contact is provided at one end of the contact wall, and a protective cover is provided on the surface of the external contact. The sealed vacuum circuit breaker described in the utility model is provided with a protective cover, a clamp and a slider, which can protect the external contact of the circuit breaker to prevent oxidation or wiring falling off, and can firmly clamp the circuit breaker on the base, so that it is more convenient to pull out the working box and convenient to repair the circuit breaker.

[0004] The above-mentioned existing technical solutions have the following defects: it is not convenient to fix the position of the protective device, and displacement cannot be avoided; it is not convenient to install the protective device at the connection head, and wind and sun cannot be avoided; it is not convenient to clamp and fix the wires at the connection, and falling off cannot be avoided. Therefore, the utility model provides a sealed vacuum circuit breaker to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide a sealed vacuum circuit breaker to solve the problems raised in the above background technology that it is inconvenient to fix the position of the protective device, displacement cannot be avoided, it is inconvenient to install the protective device at the connection head, wind and sun cannot be avoided, it is inconvenient to clamp and fix the wires at the connection, and falling off cannot be avoided.

[0006] To achieve the above object, the utility model provides the following technical solution: a sealed vacuum circuit breaker, comprising: a working box for installation, fixedly installed on the right side of the working box and having a sealed pole installed;

[0007] The cam is an assembly of a plurality of latching members, each of which is provided with a first latch and a second latching member, each of which is provided with a plurality of latching members, each of which is provided with a plurality of latching members.

[0008] Preferably, the lower right end of the first clamp arm is arranged in a fitted state with the first protective cover, and the first clamp arm forms a rotating structure at the upper and lower ends of the middle part of the outer contact.

[0009] Preferably, the cross section of the second clamp arm is in a broken line shape, and the interior of the clamping slot is connected to the second clamp arm in a clamping manner.

[0010] Preferably, the connecting rod forms a rotating structure on the left side of the lower end of the second clamping arm, and the upper end of the connecting rod is connected to the first nut in a threaded manner.

[0011] Preferably, the lower end of the first protective cover is arranged in a fitted state with the second protective cover, and the threaded rod is connected to the middle part of the right side of the first protective cover and the second protective cover in a threaded manner.

[0012] Preferably, the cross section of the clamping plate is V-shaped, and the clamping plate drives the fixing rod to form a sliding structure inside the second sliding groove.

[0013] Compared with the prior art, the beneficial effects of the utility model are: the sealed vacuum circuit breaker;

[0014] 1. A first clamp arm, a second clamp arm and a connecting rod are provided. When the first protective cover and the second protective cover are installed on the right outer end of the outer contact, in order to avoid displacement, the connecting rod is rotated to the upper and lower ends, and the connecting rod drives the first clamp arm and the second clamp arm to rotate the right end, so that the first clamp arm squeezes the upper and lower ends of the first protective cover and the second protective cover, and the second clamp arm is rotated and engaged in the inside of the card slot. When the connecting rod is vertical, the first nut is rotated downward to fix the position of the connecting rod, so that the first clamp arm and the second clamp arm are in a stable position, which is convenient for fixing the position of the protective device to avoid displacement;

[0015] 2. A first protective cover, a bolt and a second nut are provided. Since the joint is exposed to the outside for a long time, rust is likely to occur at the joint over a long period of time. Therefore, the first protective cover and the second protective cover are respectively engaged with the upper and lower sides of the right side of the outer contact, and then the bolt is inserted through the inside of the hole slot, and the bolt is fixed inside the hole slot by the second nut, so that the first protective cover and the second protective cover can be fixed in position, which is convenient for installing a protective device at the joint to avoid wind and sun exposure;

[0016] 3. A threaded rod, a clamping plate and a fixing rod are provided. When the wire is connected to the right inner side of the outer contact, in order to avoid detachment later, the threaded rod is rotated to drive the clamping plate to move downward. In order to prevent the clamping plate from rotating, the clamping plate drives the fixing rod to slide downward inside the second slide groove during movement, so that the clamping plate is connected to the wire. The upper and lower ends of the wire are clamped and fixed by the clamping plate, which is convenient for clamping and fixing the wire at the connection to avoid falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the side cross-sectional structure of the utility model;

[0019] Figure 3 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0020] Figure 4 This is a schematic diagram of the connection structure between the first protective cover and the second slide groove of the utility model;

[0021] Figure 5 This is a schematic diagram of the connection structure between the threaded rod and the clamping plate of the utility model.

[0022] In the figure: 1, working box; 2, sealed pole; 3, external contact; 4, first clamping arm; 5, second clamping arm; 6, first slide groove; 7, connecting rod; 8, first nut; 9, first protective cover; 10, second protective cover; 11, slot; 12, threaded rod; 13, second slide groove; 14, clamping plate; 15, fixing rod; 16, hole groove; 17, bolt; 18, second nut. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4 The utility model provides a technical solution: a sealed vacuum circuit breaker, including a working box 1, a sealed pole 2, an external contact 3, a first clamping arm 4, a second clamping arm 5, a first slide groove 6, a connecting rod 7, a first nut 8, a first protective cover 9, a second protective cover 10, a slot 11, a threaded rod 12, a second slide groove 13, a clamping plate 14, a fixing rod 15, a hole slot 16, a bolt 17 and a second nut 18.

[0025] The right side of the sealed pole 2 is fixedly connected to the left side of the outer contact 3, and the first clamp arm 4 and the second clamp arm 5 are arranged on the upper and lower sides of the middle part of the outer contact 3, and the second clamp arm 5 is located on the right side of the first clamp arm 4, and the middle part of the first clamp arm 4 is provided with a first slide groove 6, and the interior of the first slide groove 6 is provided with a connecting rod 7, and the upper end of the connecting rod 7 is installed with a first nut 8, and the right end of the outer contact 3 is installed with a first protective cover 9 and a second protective cover 10, and the second protective cover 10 is located at the lower end of the first protective cover 9, and the first protective cover 9 and the second protective cover 10 are provided with a first protective cover 9. A card slot 11 is provided at the left end of the protective cover 10, and a threaded rod 12 is installed in the middle of the right end of the first protective cover 9 and the second protective cover 10, and a second slide groove 13 is provided on the inner wall of the right end of the first protective cover 9 and the second protective cover 10, a clamping plate 14 is installed at the lower end of the threaded rod 12, and a fixing rod 15 is fixed to the upper side of the front and rear ends of the clamping plate 14, a hole groove 16 is provided at the front and rear ends of the first protective cover 9 and the second protective cover 10, and a bolt 17 is installed inside the hole groove 16, and a second nut 18 is provided at the lower end of the bolt 17.

[0026] like Figure 3 As shown, the lower right end of the first clamp arm 4 is arranged in a fitted state with the first protective cover 9 , and the first clamp arm 4 forms a rotating structure at the upper and lower ends of the middle part of the outer contact 3 .

[0027] like Figure 3 As shown, the cross-section of the second clamp arm 5 is in a broken line shape, and the interior of the clamping slot 11 is connected to the second clamp arm 5 in a clamping manner, the connecting rod 7 forms a rotating structure on the left side of the lower end of the second clamp arm 5, and the upper end of the connecting rod 7 is connected to the first nut 8 in a threaded manner.

[0028] like Figure 2 As shown, the lower end of the first protective cover 9 is arranged in a fitted state with the second protective cover 10 , and the threaded rod 12 is connected to the middle of the right side of the first protective cover 9 and the second protective cover 10 in a threaded manner.

[0029] like Figure 3 and Figure 5 The cross section of the clamping plate 14 is V-shaped, and the clamping plate 14 drives the fixing rod 15 to form a sliding structure inside the second sliding groove 13, so as to fix the position of the wire.

[0030] Working principle: When using the sealed vacuum circuit breaker, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, after the outer contact 3 is connected to the wire, in order to prevent the connection from being exposed to wind and sun for a long time, causing rust and separation of the connection, the first protective cover 9 and the second protective cover 10 are installed on the right outer end of the outer contact 3, and then the bolt 17 is inserted into the inside of the hole groove 16, and the second nut 18 is installed at the lower end of the bolt 17, so that the first protective cover 9 and the second protective cover 10 can be fixedly connected. After the protective device is installed, in order to avoid displacement, the connecting rod 7 is rotated upward to drive the first clamping arm 4 and the second clamping arm 5 to rotate to the right, and the upper end of the first clamping arm 4 is attached to the first protective cover 9. The upper and lower ends of the second protective cover 10, and the second clamping arm 5 is rotated to engage with the inside of the card slot 11, so that the first protective cover 9 and the second protective cover 10 can be fixed in position. However, if the circuit breaker is used for a long time, the wires may fall off. The threaded rod 12 is rotated to drive the clamping plate 14 to move downward. In order to prevent the clamping plate 14 from rotating through the threaded rod 12, the clamping plate 14 drives the fixing rod 15 to slide in the temporal part of the second slide groove 13 during movement. After the upper and lower sides of the wires are squeezed and clamped by the clamping plate 14, the wires can be fixed in position to prevent them from falling off. This is the method of using the sealed vacuum circuit breaker.

[0031] The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sealed vacuum circuit breaker, comprising: A working box (1) for installation, fixedly mounted on the right side of the working box (1) and having a sealed pole (2); It is characterized by further comprising: The outer contact (3) is provided with a first clamp arm (4) and a second clamp arm (5) at the upper and lower sides of the middle part of the outer contact (3), and the second clamp arm (5) is located on the right side of the first clamp arm (4). The middle part of the first clamp arm (4) is provided with a first slide groove (6), and a connecting rod (7) is provided inside the first slide groove (6), and a first nut (8) is installed at the upper end of the connecting rod (7). The right end of the outer contact (3) is provided with a first protective cover (9) and a second protective cover (10), and the second protective cover (10) is located at the lower end of the first protective cover (9). The first protective cover (9) is provided with a first nut (8) at the upper end of the connecting rod (7). ) and the left end of the second protective cover (10) are provided with a card slot (11), and a threaded rod (12) is installed in the middle of the right end of the first protective cover (9) and the second protective cover (10), and a second slide groove (13) is provided on the inner wall of the right end of the first protective cover (9) and the second protective cover (10), a clamping plate (14) is installed at the lower end of the threaded rod (12), and a fixing rod (15) is fixed to the upper side of the front and rear ends of the clamping plate (14), a hole groove (16) is provided at the front and rear ends of the first protective cover (9) and the second protective cover (10), and a bolt (17) is installed inside the hole groove (16), and a second nut (18) is provided at the lower end of the bolt (17).

2. The sealed vacuum circuit breaker according to claim 1, characterized in that: The lower right end of the first clamp arm (4) is arranged in a fitted state with the first protective cover (9), and the first clamp arm (4) forms a rotating structure at the upper and lower ends of the middle part of the external contact (3).

3. The sealed vacuum circuit breaker according to claim 1, characterized in that: The cross section of the second clamp arm (5) is in the shape of a broken line, and the interior of the clamping slot (11) is connected to the second clamp arm (5) in a clamping manner.

4. The sealed vacuum circuit breaker according to claim 1, characterized in that: The connecting rod (7) forms a rotating structure on the left side of the lower end of the second clamping arm (5), and the upper end of the connecting rod (7) is connected to the first nut (8) in a threaded manner.

5. The sealed vacuum circuit breaker according to claim 1, characterized in that: The lower end of the first protective cover (9) is arranged in a fitted state with the second protective cover (10), and the threaded rod (12) is connected in a threaded manner at the middle of the right side of the first protective cover (9) and the second protective cover (10).

6. The sealed vacuum circuit breaker according to claim 1, characterized in that: The cross section of the clamping plate (14) is in a V-shaped structure, and the clamping plate (14) drives the fixing rod (15) to form a sliding structure inside the second sliding groove (13).

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