High-voltage switch cabinet

Abstract

The utility model relates to the technical field of high-voltage switch cabinet panel fixing, and provides a high-voltage switch cabinet which comprises a mechanism chamber side plate, a mechanism chamber panel and a fixing pin, the panel fixing pin comprises a first connecting part and a second connecting part, the outer side of the first connecting part is provided with external threads, and the outer side of the second connecting part is provided with external threads; the panel fixing pin is fixed through a nut after being inserted into a first connecting hole of the mechanism chamber side plate through the first connecting part, the second connecting part is provided with an inner threaded hole, a plurality of positioning teeth are arranged on the end face of the end, away from the first connecting part, of the second connecting part, and the inner diameter of the second connecting hole is matched with the outer diameter of the second connecting part. Under the guiding effect of the inclined faces of the positioning teeth, after the second connecting holes are in interference fit with the second connecting parts, bolts penetrate through the second connecting holes to be in threaded fit with the inner threaded holes of the second connecting parts, and the positioning teeth are used for positioning the second connecting holes and carrying out paint breaking on the mechanism chamber panel. The switch cabinet is beneficial to installation of the panel, is convenient to position and disassemble, and improves the grounding performance of the switch cabinet.

Description

A high-voltage switchgear Technical Field

[0001] This application relates to the field of high-voltage switchgear panel fixing technology, specifically to a high-voltage switchgear. Background Technology

[0002] The conventional installation method for the panel of the high-voltage switchgear mechanism compartment is the use of bolts and rivets. During repeated installation and disassembly, the bolts and rivets are prone to seizing, making disassembly and installation inconvenient. Furthermore, painting the switchgear can affect its grounding performance. Summary of the Invention

[0003] To help solve the above-mentioned technical problems, this application provides a high-voltage switchgear, which adopts the following technical solution:

[0004] A high-voltage switchgear includes a mechanism compartment side panel and a mechanism compartment front panel. The side panel has a first connecting hole, and the front panel has a second connecting hole. The switchgear also includes a panel fixing pin, which comprises a first connecting portion and a second connecting portion. The outer diameter of the first connecting portion is smaller than that of the second connecting portion, creating a stepped structure at the connection between the two portions. The outer side of the first connecting portion has external threads. After the panel fixing pin is inserted into the first connecting hole of the side panel through the first connecting portion, it is secured by a nut.

[0005] The second connecting part is provided with an internal threaded hole. The end face of the second connecting part away from the first connecting part is provided with several positioning teeth. The positioning teeth are triangular and the outer surface of the positioning teeth is inclined. The inner diameter of the second connecting hole matches the outer diameter of the second connecting part. Under the guidance of the inclined surface of the positioning teeth, after the second connecting hole and the second connecting part are interference-fitted, the bolt passes through the second connecting hole and is threaded into the internal threaded hole of the second connecting part. The positioning teeth are used to position the second connecting hole and to break the paint on the panel of the mechanism chamber.

[0006] Preferably, a gap is left between the nut and the inner wall of the mechanism chamber side plate on the first connecting part. In the gap, a spring washer is fitted on the side near the nut and a flat washer is fitted on the side near the inner wall of the mechanism chamber side plate.

[0007] Preferably, both the first connecting part and the second connecting part are cylindrical, and the positioning teeth are distributed circumferentially along the edge of the end face of the second connecting part near the mechanism chamber panel.

[0008] Preferably, an extension is provided on one side of the mechanism chamber side panel, and the extension is provided with the first connecting hole and the panel fixing pin, and the two sides of the mechanism chamber panel cooperate with the extension.

[0009] In summary, this application has the following beneficial effects:

[0010] 1. Facilitates panel installation, making positioning and disassembly easier.

[0011] 2. It avoids the problem of bolts and nuts seizing during installation, which is common in existing connection methods.

[0012] 3. After installation, it is beneficial to the grounding continuity of the switchgear. Attached Figure Description

[0013] Figure 1 is a schematic diagram of the overall structure of the mechanism room panel and the mechanism room side panel of this application;

[0014] Figure 2 is a schematic diagram of the connection between the mechanism room panel and the mechanism room side panel of this application;

[0015] Figure 3 is a schematic diagram of the panel fixing pin installed on the side plate of the mechanism chamber in this application;

[0016] Figure 4 is a schematic diagram of the panel fixing pin of this application;

[0017] Figure 5 is a schematic diagram of the connection between the panel fixing pin and the mechanism chamber panel of this application.

[0018] Reference numerals: 1-Mechanical chamber side plate; 2-Mechanical chamber panel; 3-Panel fixing pin; 3.1-First connecting part; 3.2-Second connecting part; 4-Second connecting hole; 5-Extension part; 6-Nut; 7-Spring washer; 8-Flat washer; 9-Positioning tooth; 10-Internal threaded hole. Detailed Implementation

[0019] The present application will be further described below with reference to the accompanying drawings. The structure and principle of the present application are very clear to those skilled in the art. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

[0020] Figure 1 is a schematic diagram of the overall structure of the mechanism chamber panel and the mechanism chamber side panel of this application; Figure 2 is a schematic diagram of the connection between the mechanism chamber panel and the mechanism chamber side panel of this application; Figure 3 is a schematic diagram of the structure of the panel fixing pin installed on the mechanism chamber side panel of this application; Figure 4 is a schematic diagram of the structure of the panel fixing pin of this application; and Figure 5 is a schematic diagram of the connection between the panel fixing pin and the mechanism chamber panel of this application.

[0021] Referring to Figures 1 to 5, the high-voltage switchgear of this application includes a mechanism compartment side plate 1, a mechanism compartment panel 2, and a panel fixing pin 3. The mechanism compartment side plate 1 has a first connecting hole, and the mechanism compartment panel 2 has a second connecting hole 4. The panel fixing pin 3 includes a first connecting part 3.1 and a second connecting part 3.2. The outer diameter of the first connecting part 3.1 is smaller than that of the second connecting part 3.2, so that the connection between the first connecting part 3.1 and the second connecting part 3.2 forms a stepped structure. The outer side of the first connecting part 3.1 is provided with an external thread. After the panel fixing pin 3 is inserted into the first connecting hole of the mechanism compartment side plate 1 through the first connecting part 3.1, it is fixed by a nut 6.

[0022] The second connecting part 3.2 is provided with an internal threaded hole 10. The end face of the second connecting part 3.2 away from the first connecting part 3.1 is provided with a plurality of positioning teeth 9. The positioning teeth 9 are triangular and the outer surface of the positioning teeth 9 is inclined. The inner diameter of the second connecting hole 4 matches the outer diameter of the second connecting part 3.2. Under the guidance of the inclined surface of the positioning teeth 9, after the second connecting hole 4 and the second connecting part 3.2 are interference-fitted, the bolt passes through the second connecting hole 4 and is threadedly engaged with the internal threaded hole 10 of the second connecting part 3.2. The positioning teeth 9 are used to position the second connecting hole 4 and to break the paint on the mechanism chamber panel 2.

[0023] The interference fit ensures that the panel fixing pin 3 does not pass directly through the second connecting hole 4, but only the positioning teeth 9 on the panel fixing pin 3 pass through the second connecting hole 4. Then, the mechanism chamber panel 2 and the mechanism chamber side plate 1 can be fixed by bolts passing through the second connecting hole 4 and the internal threaded hole 10 of the second connecting part 3.2 in sequence.

[0024] On the first connecting part 3.1, there is a gap between the nut 6 and the inner wall of the mechanism chamber side plate 1. Within the gap, a spring washer 7 is fitted on the side near the nut 6, and a flat washer 8 is fitted on the side near the inner wall of the mechanism chamber side plate 1. Both the first connecting part 3.1 and the second connecting part 3.2 are cylindrical, and the positioning teeth 9 are distributed circumferentially along the edge of the end face of the second connecting part 3.2 near the end panel 2 of the mechanism chamber.

[0025] An extension 5 is provided on one side of the mechanism chamber side plate 1. The extension 5 is provided with a first connecting hole and a panel fixing pin 3. Both sides of the mechanism chamber panel 2 are engaged with the extension 5. The panel fixing pin 3, the first connecting hole, and other devices on the mechanism chamber side plate 1 for fixing to the mechanism chamber panel 2 are all located in the extension 5.

[0026] When installing the mechanism panel 2, manual alignment of the holes is required. The positioning teeth 9 on the second connecting part 3.2 can quickly align with the second connecting hole 4 on the mechanism panel 2, and then tightening the bolts will secure it.

[0027] The mechanism panel 2 requires powder coating. However, due to the insulating properties of paint, the grounding effect is poor after powder coating. To ensure overall grounding continuity, during the installation of the mechanism panel 2, the positioning teeth 9 on the panel fixing pin 3 are fully contacted by tightening the bolts, achieving a paint-breaking effect and thus improving grounding continuity. The panel fixing pin 3 meets high corrosion resistance requirements and is less prone to corrosion than rivet nuts in harsh environments. The bolts are also less likely to jam, thus not affecting the disassembly of the door panel.

Claims

1. A high-voltage switchgear, comprising a mechanism compartment side panel and a mechanism compartment front panel, wherein a first connection hole is provided on the mechanism compartment side panel and a second connection hole is provided on the mechanism compartment front panel, characterized in that, It also includes a panel fixing pin, which includes a first connecting part and a second connecting part. The outer diameter of the first connecting part is smaller than that of the second connecting part, so that the connection between the first connecting part and the second connecting part forms a stepped structure. The outer side of the first connecting part is provided with external threads. After the panel fixing pin is inserted into the first connecting hole of the side plate of the mechanism chamber through the first connecting part, it is fixed by a nut. The second connecting part is provided with an internal threaded hole. The end face of the second connecting part away from the first connecting part is provided with several positioning teeth. The positioning teeth are triangular and the outer surface of the positioning teeth is inclined. The inner diameter of the second connecting hole matches the outer diameter of the second connecting part. Under the guidance of the inclined surface of the positioning teeth, after the second connecting hole and the second connecting part are interference-fitted, the bolt passes through the second connecting hole and is threaded into the internal threaded hole of the second connecting part. The positioning teeth are used to position the second connecting hole and to break the paint on the panel of the mechanism chamber.

2. The high-voltage switchgear according to claim 1, characterized in that, On the first connecting part, a gap is left between the nut and the inner wall of the side plate of the mechanism chamber. In the gap, a spring washer is fitted on the side near the nut and a flat washer is fitted on the side near the inner wall of the side plate of the mechanism chamber.

3. The high-voltage switchgear according to claim 1, characterized in that, Both the first connecting part and the second connecting part are cylindrical, and the positioning teeth are distributed circumferentially along the edge of the end face of the second connecting part near the panel of the mechanism chamber.

4. The high-voltage switchgear according to claim 1, characterized in that, An extension is provided on one side of the mechanism chamber side panel, and the extension is provided with the first connecting hole and the panel fixing pin. The two sides of the mechanism chamber panel cooperate with the extension.

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