Sleeve of isolating switch

Abstract

The utility model provides a bushing of an isolating switch, which comprises at least two bushing main bodies, a connecting section integrally connected with the bushing main bodies is arranged between the bushing main bodies, the connecting section is arranged relative to the radial direction of the bushing main bodies and is positioned in the middle of the bushing main bodies, one of the bushing main bodies is provided with a connecting block, and the other bushing main body is provided with a connecting block. The connecting block is located on the side opposite to the connecting section, a riveting hole is formed in the connecting block, a connecting opening is formed in the connecting block, and the connecting block and the connecting section are coaxially arranged. The utility model has the advantages of convenient production and installation and low production cost.

Description

Technical Field

[0001] The utility model relates to the technical field of disconnecting switches, and particularly relates to a bushing of a disconnecting switch. Background Art

[0002] A disconnecting switch (commonly known as a "knife switch"), generally refers to a high-voltage disconnecting switch, that is, a disconnecting switch with a rated voltage of 1 kV and above, usually simply referred to as a disconnecting switch. It is one of the most used electrical appliances in high-voltage switchgear. Its working principle and structure are relatively simple. However, due to its large usage, high requirements for working reliability, it has a great impact on the design, establishment and safe operation of substations and power plants. The main feature of a disconnecting switch is that it has no arc extinguishing ability and can only switch the circuit on and off without load current. Disconnecting switches are used for various voltages, used to change the circuit connection or isolate the line or equipment from the power source. It has no current breaking ability and can only be operated after disconnecting the line with other equipment first. Generally, it is equipped with an interlocking device to prevent misoperation when the switch is under load. Sometimes pins are needed to prevent the switch from disconnecting under the magnetic force of a large fault. The three bushings for installing moving contacts of the existing three-phase disconnecting switch are separately arranged, and the three bushings are fixed by a clamping assembly, so that the three bushings are linked to realize the switching on and off of the moving contact and the static contact, resulting in troublesome production and assembly and the need to set up a clamping assembly, with high production costs. Summary of the Utility Model

[0003] Based on the above problems, the purpose of the utility model is to provide a bushing that is convenient for production, installation and has low production costs.

[0004] In view of the above problems, the following technical solutions are provided: A bushing of a disconnecting switch, comprising at least two bushing bodies, and a connecting section integrally connected to the bushing bodies is arranged between the bushing bodies.

[0005] Adopting the above structure can facilitate the production of the bushing and facilitate the installation of the bushing on the disconnecting switch by workers, improving the assembly efficiency of the disconnecting switch. By integrally arranging the bushing bodies, the synchronism during the swing of the bushing can also be improved, thereby improving the reliability of the disconnecting switch.

[0006] The utility model is further arranged such that the connecting section is arranged in the radial direction of the bushing body and is located in the middle of the bushing body.

[0007] Adopting the above structure can improve the overall structural strength of the utility model and facilitate the operator to control the swing of the bushing, improving the convenience of operation of the utility model.

[0008] The utility model is further arranged such that a connecting block is provided on one of the bushing bodies, the connecting block is located on one side opposite to the connecting section, and a riveting hole is provided on the connecting block.

[0009] In the above structure, by providing the connecting block, it is convenient for the present utility model to be installed on the bracket of the disconnector, and by providing the riveting holes, the connection strength and the convenience of installation can be improved, thereby enhancing the reliability of the present utility model and the convenience of assembly.

[0010] The present utility model is further configured such that a connection port is provided on the connecting block.

[0011] Adopting the above structure can further enhance the stability of the present utility model when installed on the bracket of the disconnector, and can facilitate the installation of the rotating shaft, thereby improving the reliability of the present utility model.

[0012] The present utility model is further configured such that the connecting block and the connecting section are coaxially arranged.

[0013] Adopting the above structure can reduce the starting torque for the driving sleeve to swing, thereby improving the convenience of operation of the present utility model.

[0014] The present utility model is further configured such that there are three sleeve bodies, including a first sleeve body, a second sleeve body, and a third sleeve body which are arranged at intervals in sequence, and the connecting blocks are provided on both the first sleeve body and the third sleeve body.

[0015] Adopting the above structure can facilitate the installation of the three-phase disconnector, and the synchronism of the swinging of the three sleeve bodies is higher, thereby improving the reliability and safety in the use of the present utility model. By providing the connecting blocks at both ends, the firmness of installation and the stability of swinging of the present utility model can be improved, and further the stability of the present utility model is enhanced.

[0016] The present utility model is further configured such that a through hole is provided in the axial direction of the sleeve body, fixing blocks for connecting the moving contact are provided at both ends of the through hole, positioning blocks protruding towards the outer end of the sleeve body are provided on the fixing blocks, and mounting holes are provided in the positioning blocks.

[0017] Adopting the above structure can facilitate the positioning and installation of the moving contact. Compared with the existing installation of the moving contact by clip pieces, by providing the positioning blocks, circumferential rotation of the moving contact during installation can be avoided, so that it cannot correspond to the static contact, affecting the closing of the moving contact and the static contact, thereby improving the convenience of assembly of the present utility model and the installation efficiency of the disconnector. By providing the mounting holes, it is convenient for the bolts for fastening the moving contact to pass through for fixed installation, thereby further improving the assembly efficiency.

[0018] The present utility model is further configured such that the mounting hole is open towards the end of the positioning block.

[0019] With the above structure, it is convenient for the present utility model to be demolded, thus facilitating the production of the present utility model and improving the production efficiency.

[0020] The present utility model is further configured such that three mounting holes are arranged at intervals in the direction opposite to the positioning block.

[0021] With the above structure, it is convenient to install the moving contact and can improve the installation firmness of the moving contact.

[0022] The present utility model is further configured such that the positioning block and the fixed block are arranged in the same direction, the fixed blocks at both ends of the sleeve body are connected by an extension block, and the through hole is divided into two connection channels. The sleeve body, the connection block, the fixed block, the positioning block, and the extension block are integrally formed.

[0023] With the above structure, the structural strength of the present utility model can be improved, and the production efficiency of the present utility model can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the present utility model.

[0025] Figure 2 It is a schematic side view structural diagram of the present utility model.

[0026] Figure 3 It is a schematic top view structural diagram of the present utility model.

[0027] Figure 4 It is a schematic cross-sectional view structural diagram of the present utility model.

[0028] The meanings of the reference numerals in the drawings: 2 - connecting section; 3 - connecting block; 31 - riveting hole; 32 - connecting port; 11 - first sleeve body; 12 - second sleeve body; 13 - third sleeve body; 14 - through hole; 4 - fixed block; 5 - positioning block; 51 - mounting hole; 6 - extension block; 141 - connection channel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following combines the drawings and embodiments to further describe in detail the specific embodiments of the present utility model. The following embodiments are used to illustrate the present utility model but are not used to limit the scope of the present utility model.

[0030] It should be noted that all the directional indications (such as up, down, left, right, front, back, back surface... ) in the embodiments of the present utility model are only used to explain the relative position relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0031] Such as Figures 1 to 4A bushing of a disconnecting switch as shown includes at least two bushing bodies, and a connecting section 2 integrally connected therebetween is provided between the bushing bodies.

[0032] With the above structure, it is convenient for the production of the bushing and for workers to install it on the disconnecting switch, improving the assembly efficiency of the disconnecting switch. By integrally setting the bushing bodies, the synchronism during the swinging of the bushing can also be improved, thereby enhancing the reliability of the disconnecting switch.

[0033] In this embodiment, the connecting section 2 is arranged in the radial direction relative to the bushing bodies and is located in the middle of the bushing bodies.

[0034] With the above structure, the overall structural strength of the present utility model can be improved, and it is convenient for the operator to control the swinging of the bushing, enhancing the operation convenience of the present utility model.

[0035] In this embodiment, a connecting block 3 is provided on one of the bushing bodies. The connecting block 3 is located on one side relative to the connecting section 2, and a riveting hole 31 is formed in the connecting block 3.

[0036] In the above structure, by providing the connecting block 3, it is convenient to install the present utility model on the bracket of the disconnecting switch, and by providing the riveting hole 31, its connection strength and installation convenience can be improved, enhancing the reliability and assembly convenience of the present utility model.

[0037] In this embodiment, a connecting port 32 is formed in the connecting block 3.

[0038] With the above structure, the stability of the present utility model installed on the bracket of the disconnecting switch can be further improved, and it is convenient for the installation of the rotating shaft, enhancing the reliability of the present utility model.

[0039] In this embodiment, the connecting block 3 and the connecting section 2 are coaxially arranged.

[0040] With the above structure, the starting torque for driving the swinging of the bushing can be reduced, thereby enhancing the operation convenience of the present utility model.

[0041] In this embodiment, there are three bushing bodies, including a first bushing body 11, a second bushing body 12, and a third bushing body 13 arranged at intervals in sequence. The connecting blocks 3 are provided on both the first bushing body 11 and the third bushing body 13.

[0042] With the above structure, it is convenient to install a three-phase disconnecting switch, and the synchronism of the swinging of the three bushing bodies is higher, enhancing the reliability and safety in the use of the present utility model. By providing the connecting blocks 3 at both ends, the firmness of the installation and the stability of the swinging of the present utility model can be improved, further enhancing the stability of the present utility model.

[0043] In this embodiment, a through hole 14 is provided in the axial direction of the casing body. Fixed blocks 4 for connecting moving contacts are provided at both ends of the through hole 14. A positioning block 5 is protrudingly provided on the fixed block 4 toward the outer end of the casing body, and a mounting hole 51 is provided in the positioning block 5.

[0044] With the above structure, the center axis of the relative connection section 2 between the fixed block 4 and the positioning block 5 is perpendicular, which is convenient for the positioning and installation of the moving contact. Compared with the existing installation of the moving contact by clip, by setting the positioning block 5, the circumferential rotation of the moving contact during installation can be avoided, so that it cannot correspond to the static contact, affecting the closing of the moving contact and the static contact, thereby improving the convenience of the assembly of the present invention and the installation efficiency of the disconnecting switch. By providing the mounting hole 51, it is convenient for the bolt for fastening the moving contact to pass through, and the positioning and installation in the height direction of the moving contact are carried out, thereby improving the assembly efficiency.

[0045] In this embodiment, the mounting hole 51 is open toward the end of the positioning block 5.

[0046] With the above structure, it is convenient for the demolding of the present invention, so that the production of the present invention is convenient, and the production efficiency is improved.

[0047] In this embodiment, three mounting holes 51 are provided at intervals in the direction opposite to the setting direction of the positioning block 5.

[0048] With the above structure, it is convenient for the installation of the moving contact and can improve the installation firmness of the moving contact.

[0049] In this embodiment, the positioning block 5 and the fixed block 4 are arranged in the same direction. The fixed blocks 4 at both ends of the casing body are connected by an extension block 6, and the through hole 14 is divided into two connection channels 141. The casing body, the connection block 3, the fixed block 4, the positioning block 5 and the extension block 6 are integrally formed.

[0050] With the above structure, the structural strength of the present invention can be improved, and the production efficiency of the present invention can be further improved.

[0051] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A bushing for an isolating switch, characterized in that: It comprises at least two sleeve bodies, wherein a connecting section integrally connected thereto is provided between the sleeve bodies, the connecting section is arranged in a radial direction relative to the sleeve bodies and is located in the middle of the sleeve bodies, one of the sleeve bodies is provided with a connecting block, the connecting block is located on a side opposite to the connecting section, and a rivet hole is opened on the connecting block.

2. The bushing of the isolating switch according to claim 1, characterized in that: The connecting block is provided with a connecting port.

3. The bushing of the isolating switch according to claim 2, characterized in that: The connecting block is coaxially arranged with the connecting section.

4. The bushing of the isolating switch according to claim 1, characterized in that: There are three sleeve bodies, including a first sleeve body, a second sleeve body and a third sleeve body which are arranged in sequence and at intervals. The first sleeve body and the third sleeve body are both provided with the connecting block.

5. The bushing of the disconnector according to claim 1, characterized in that: A through hole is provided in the axial direction of the sleeve body, and fixing blocks for connecting the moving contact are provided at both ends of the through hole. A positioning block is provided on the fixing block protruding toward the outer end of the sleeve body, and a mounting hole is provided on the positioning block.

6. The bushing of the isolating switch according to claim 5, characterized in that: The mounting hole is opened toward the end of the positioning block.

7. The bushing of the disconnector according to claim 6, characterized in that: The mounting holes are arranged in three intervals in the direction in which the positioning block is arranged.

8. The bushing of the disconnector according to claim 7, characterized in that: The positioning block and the fixing block are arranged in the same direction, the fixing blocks at both ends of the sleeve body are connected by an extension block, and the through hole is divided into two connecting channels, and the sleeve body and the connecting block, the fixing block, the positioning block and the extension block are integrally formed.

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