Sleeve

Abstract

The utility model provides a sleeve, which comprises a sleeve main body, a through hole is arranged in the axial direction of the sleeve main body, fixing blocks used for being connected with a moving contact are arranged at two ends, opposite to the through hole, of the sleeve main body, positioning blocks are arranged on the fixing blocks towards the outer end of the sleeve main body in a protruding manner, and mounting holes are arranged on the positioning blocks. The utility model is convenient to produce and assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of isolating switches, in particular to a bushing. Background Art

[0002] Disconnectors (commonly known as "knife switches") generally refer to high-voltage disconnectors, that is, disconnectors with a rated voltage of 1kV or above, usually referred to as disconnectors. They are the most commonly used type of high-voltage switchgear. Their working principle and structure are relatively simple, but due to their large usage and high requirements for working reliability, they have a great impact on the design, establishment and safe operation of substations and power plants. The main feature of disconnectors is that they have no arc extinguishing ability and can only open and close circuits without load current. Disconnectors are used at all levels of voltage to change circuit connections or isolate lines or equipment from power supplies. They have no current-breaking ability and can only be operated after disconnecting the line with other equipment. They are generally equipped with an interlocking device to prevent misoperation of the switch when it is under load, and sometimes a pin is required to prevent the switch from being disconnected under the magnetic force of a large fault. When installing the moving contact of the existing isolating switch sleeve, the sleeve is limited by the clip at its end, but the clip is not limited in the circumferential direction relative to the sleeve, which causes the clip to be easily moved when installing the moving contact, making it impossible for the moving contact to correspond to the static contact, affecting the assembly and reducing the assembly efficiency. Utility Model Content

[0003] Based on the above problems, the purpose of the utility model is to provide a sleeve that is easy to produce and assemble.

[0004] In response to the above problems, the following technical solutions are provided: a sleeve, comprising a sleeve body, a through hole being provided in the axial direction of the sleeve body, and fixing blocks for connecting the moving contact are provided at both ends of the sleeve body relative to the through hole, and 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.

[0005] The above structure can facilitate the positioning and installation of the moving contact. Compared with the existing installation of the moving contact by the clip, the positioning block can prevent the moving contact from rotating in the circumferential direction during installation, and cannot correspond to the static contact, which affects the debugging and closing of the moving contact and the static contact, thereby improving the convenience of assembly of the utility model and the installation efficiency of the disconnector. The installation hole can facilitate the bolts for fastening the moving contact to pass through and be fixedly installed, thereby improving the assembly efficiency.

[0006] The utility model is further configured such that the mounting hole is opened toward the end of the positioning block.

[0007] The above structure can facilitate demoulding of the utility model, thereby facilitating production of the utility model and improving production efficiency.

[0008] The utility model is further configured that three mounting holes are arranged at intervals in the direction in which the positioning block is arranged.

[0009] The above structure can facilitate the installation of the moving contact and improve the installation firmness of the moving contact.

[0010] The utility model is further configured that the positioning block and the fixing block are arranged in the same direction.

[0011] By adopting the above structure, the positioning block, the fixing block and the static contact can be made to correspond to each other when the sleeve is installed. Then, when the moving contact is installed, it only needs to be fixed on the positioning block, and it can cooperate with the static contact to close the circuit breaker. There is no need to adjust the left and right swing to a position where it can close the circuit breaker with the static contact. This further improves the convenience of assembling the utility model into an isolating switch and improves the assembly efficiency of the isolating switch.

[0012] The utility model is further configured such that 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 is integrally formed with the fixing block, the positioning block and the extension block.

[0013] The above structure can improve the structural strength of the utility model and further improve the production efficiency of the utility model.

[0014] The utility model is further configured that a connecting block is provided on the sleeve body, and a riveting hole is opened on the connecting block.

[0015] In the above structure, by providing a connecting block, the utility model can be easily installed on the bracket on the isolating switch, and by providing a riveting hole, the connection strength between it and the rotating shaft used to drive the sleeve to swing and the convenience of installation can be improved, thereby improving the reliability and assembly convenience of the utility model.

[0016] The utility model is further configured that a connecting port is provided on the connecting block.

[0017] The above structure can further improve the stability of the utility model when installed on the bracket of the isolating switch, and can facilitate the installation of the rotating shaft, thereby improving the reliability of the utility model.

[0018] The utility model is further configured such that three sleeve bodies are provided, 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, and the first sleeve body, the second sleeve body and the third sleeve body are integrally formed through a connecting section.

[0019] The above structure can facilitate the production of the bushing and the installation of the bushing on the three-phase isolating switch, thereby improving the assembly efficiency of the three-phase isolating switch. The bushing body is arranged in an integrated manner, and the synchronization of the bushing during swinging can be improved, thereby improving the reliability of the three-phase isolating switch.

[0020] The utility model is further configured that the connecting section is arranged in a radial direction relative to the sleeve body and is located in the middle of the sleeve body.

[0021] The above structure can improve the overall structural strength of the utility model, and can facilitate the operator to control the swing of the sleeve when closing or opening the switch, thereby improving the convenience of operation of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model.

[0023] Figure 2 It is a side structural schematic diagram of the utility model.

[0024] Figure 3 It is a schematic diagram of the top structure of the utility model.

[0025] Figure 4 It is a cross-sectional structural schematic diagram of the utility model.

[0026] Meanings of the numbers in the figure: 1-sleeve body; 11-through hole; 2-fixing block; 3-positioning block; 31-mounting hole; 21-extension block; 111-connecting channel; 12-connecting block; 121-riveting hole; 122-connecting port; 13-first sleeve body; 14-second sleeve body; 15-third sleeve body; 16-connecting section. DETAILED DESCRIPTION

[0027] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back, backside...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] like Figures 1 to 4A bushing is shown, comprising a bushing body 1, a through hole 11 being provided in the axial direction of the bushing body 1, fixing blocks 2 for connecting a moving contact being provided at both ends of the bushing body 1 relative to the through hole 11, a positioning block 3 being provided on the fixing block 2 protruding toward the outer end of the bushing body 1, and a mounting hole 31 being provided on the positioning block 3.

[0030] With the above structure, the fixing block 2 and the positioning block 3 are arranged perpendicularly to the radial direction of the sleeve body 1, which can facilitate the positioning and installation of the moving contact. Compared with the existing installation of the moving contact by the clip, the positioning block 3 can avoid the circumferential rotation of the moving contact during installation, and it cannot correspond to the static contact, which affects the debugging and closing of the moving contact and the static contact, thereby improving the convenience of assembly of the utility model and the installation efficiency of the disconnector. By setting the installation hole 31, it is convenient to pass the bolts for fastening the moving contact, and perform the positioning and installation of the moving contact in the height direction, thereby further improving the assembly efficiency.

[0031] In this embodiment, the mounting hole 31 is opened toward the end of the positioning block 3 .

[0032] The above structure can facilitate demoulding of the utility model, thereby facilitating production of the utility model and improving production efficiency.

[0033] In this embodiment, three mounting holes 31 are arranged at intervals in the direction relative to the positioning block 3 .

[0034] The above structure can facilitate the installation of the moving contact and improve the installation firmness of the moving contact.

[0035] In this embodiment, the positioning block 3 and the fixing block 2 are arranged in the same direction.

[0036] By adopting the above structure, the positioning block 3 and the fixing block 2 can correspond to the static contact when the sleeve is installed. Then, when the moving contact is installed, it only needs to be fixed on the positioning block 3, and it can cooperate with the static contact to close the circuit breaker. There is no need to adjust the left and right swing to a position where it can close the circuit breaker with the static contact. This further improves the convenience of assembling the utility model into an isolating switch and improves the assembly efficiency of the isolating switch.

[0037] In this embodiment, the fixing blocks 2 at both ends of the sleeve body 1 are connected by an extension block 21, and the through hole 11 is divided into two connecting channels 111. The sleeve body 1 is integrally formed with the fixing block 2, the positioning block 3 and the extension block 21.

[0038] The above structure can improve the structural strength of the utility model and further improve the production efficiency of the utility model.

[0039] In this embodiment, a connection block 12 is provided on the sleeve body 1 , and a riveting hole 121 is opened on the connection block 12 .

[0040] In the above structure, by providing the connecting block 12, the utility model can be easily installed on the bracket on the isolating switch, and by providing the riveting hole 121, the connection strength between it and the rotating shaft for driving the sleeve to swing and the convenience of installation can be improved, thereby improving the reliability and assembly convenience of the utility model.

[0041] In this embodiment, a connection port 122 is formed on the connection block 12 .

[0042] The above structure can further improve the stability of the utility model when installed on the bracket of the isolating switch, and can facilitate the installation of the rotating shaft, thereby improving the reliability of the utility model.

[0043] In this embodiment, there are three sleeve bodies 1, including a first sleeve body 13, a second sleeve body 14 and a third sleeve body 15 which are arranged in sequence. The first sleeve body 13 and the third sleeve body 15 are both provided with the connecting block 12, and the first sleeve body 13, the second sleeve body 14 and the third sleeve body 15 are integrally formed through a connecting section 16.

[0044] The above structure can facilitate the production of the bushing and the installation of the bushing on the three-phase isolating switch, thereby improving the assembly efficiency of the three-phase isolating switch. The bushing body 1 is arranged in an integrated manner, and the synchronization of the bushing during swinging can be improved, thereby improving the reliability of the three-phase isolating switch.

[0045] In this embodiment, the connecting section 16 is arranged in a radial direction relative to the sleeve body 1 and is located in the middle of the sleeve body 1 .

[0046] The above structure can improve the overall structural strength of the utility model, and can facilitate the operator to control the swing of the sleeve when closing or opening the switch, thereby improving the convenience of operation of the utility model.

[0047] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the protection scope of the present invention.

Claims

1. A sleeve, comprising a sleeve body, 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 sleeve body relative to 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.

2. A sleeve according to claim 1, characterized in that: The mounting hole is opened toward the end of the positioning block.

3. A sleeve according to claim 2, characterized in that: The mounting holes are arranged in three intervals in the direction in which the positioning block is arranged.

4. A sleeve according to claim 1, characterized in that: The positioning block and the fixing block are arranged in the same direction.

5. A sleeve according to claim 1, characterized in that: The fixing blocks at both ends of the sleeve body are connected through an extension block, and the through hole is divided into two connecting channels. The sleeve body, the fixing block, the positioning block and the extension block are integrally formed.

6. A sleeve according to claim 5, characterized in that: The sleeve body is provided with a connecting block, and the connecting block is provided with a riveting hole.

7. A sleeve according to claim 6, characterized in that: The connecting block is provided with a connecting port.

8. A sleeve according to claim 6, characterized in that: The sleeve bodies are provided with three, including a first sleeve body, a second sleeve body and a third sleeve body which are arranged in sequence and spaced apart. The first sleeve body and the third sleeve body are both provided with the connecting block, and the first sleeve body, the second sleeve body and the third sleeve body are integrally formed through a connecting section.

9. A sleeve according to claim 8, characterized in that: The connecting section is arranged in a radial direction relative to the sleeve body and is located in the middle of the sleeve body.

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