CN210073690U - Safe type test two-stage knife switch - Google Patents
Safe type test two-stage knife switch Download PDFInfo
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- CN210073690U CN210073690U CN201921349095.2U CN201921349095U CN210073690U CN 210073690 U CN210073690 U CN 210073690U CN 201921349095 U CN201921349095 U CN 201921349095U CN 210073690 U CN210073690 U CN 210073690U
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- knife switch
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Abstract
The utility model provides a safe test two-stage knife switch which can be used for connecting a test instrument into a power supply in an electrical test, and comprises a shell; an observation port with a transparent cover is arranged at the shell; the static contact and the moving contact of the knife switch are positioned in the shell and are arranged below the observation port; the moving contact is connected with an operating handle outside the shell; the moving contact is driven by the operating handle to translate in the shell, and when the moving contact translates to be connected with the fixed contact, the knife switch is switched on; when the moving contact translates to be separated from the fixed contact, the switch blade is opened; the utility model discloses possess better security.
Description
Technical Field
The utility model belongs to the technical field of the electrical installation technique and specifically relates to an experimental doublestage plug-in strip of safe type.
Background
When the power grid operates, sometimes the power grid needs to be tested, and during the test, a knife switch is needed to lead electricity to test equipment, but the current knife switch for the test has the following defects:
(1) the charged part of the bipolar switch blade is exposed, so that people can easily touch the charged part by mistake to cause electric shock during operation
(2) The power panel and the bipolar switch are two parts and inconvenient to carry, and the two parts are integrated
(3) The power panel and the bipolar switch blade are connected through the exposed end heads, the operating room is easy to miss and touch the operator to cause electric shock, the power panel and the bipolar switch blade are integrated, and the power line connector adopts an insulation sealing mode to avoid electric shock.
(4) The power panel needs the manual work to wind when receiving the line, and the operation is complicated, adopts a key to receive the line function when this application is received the line.
Disclosure of Invention
The utility model provides an experimental doublestage knife switch of safe type possesses better security.
The utility model adopts the following technical scheme.
A safe test double-stage knife switch can be used for connecting a test instrument into a power supply in an electrical test, and comprises a shell; an observation port with a transparent cover is arranged at the shell; the static contact and the moving contact of the knife switch are positioned in the shell and are arranged below the observation port; the moving contact is connected with an operating handle outside the shell; the moving contact is driven by the operating handle to translate in the shell, and when the moving contact translates to be connected with the fixed contact, the knife switch is switched on; when the moving contact moves horizontally to be separated from the fixed contact, the knife switch is opened.
The static contact is connected with a protection device of a power supply; the moving contact is connected with the inlet wire of the test instrument through the connecting conductor.
The connecting conductor comprises a flexible lead connected with the moving contact, and the flexible lead is connected with the input end of the one-key wire take-up device; the one-key wire take-up device is fixed at the shell, and the output end of the one-key wire take-up device is connected with the retractable inlet wire; the one-key wire take-up device is provided with a wire take-up button positioned outside the shell.
The flexible conducting wire is bent to meet the requirement of the moving distance of the moving contact.
The retractable inlet wire is an insulated sheath power line with a plug, and the plug can be directly connected with a power box of the test instrument or a power panel of the test instrument; the one-key wire take-up device can also be used as a power panel of a test instrument.
The length that can accomodate the inlet wire is 15m or 30m, when receiving line button and triggered, can accomodate the inlet wire and be drawn into by a key take-up and accomodate.
The static contact is a double-piece open type static contact; when the knife switch is switched on, the moving contact moves horizontally to the opening inserted into the fixed contact.
The shell is a transparent shell.
Compare with old structure plug-in strip in the past, the utility model has the advantages of:
(1) the live part of the bipolar switch blade with the old structure is exposed outside, so that people are easy to touch by mistake to cause electric shock during operation, the knife edge can be seen, and the situation that the people touch the live part by mistake can be ensured;
(2) the power panel and the bipolar switch blade of the old structure are two parts, which are inconvenient to carry, and the power panel and the bipolar switch blade are integrated;
(3) the power panel and the bipolar switch blade are integrated, and the power line connector adopts an insulated closed mode to avoid electric shock;
(4) when the power supply disc with the old structure is used for winding, manual winding is needed, the operation is complex, and a one-key winding function is adopted when the power supply disc is used for winding; the one-key wire take-up device has the same principle as the one-key wire take-up device of the dust collector.
Drawings
The invention will be described in further detail with reference to the following drawings and detailed description:
FIG. 1 is a schematic diagram of the present invention;
fig. 2 is a schematic top view of the present invention;
in the figure: 1-observation window; 2-operating a handle; 3-a wire take-up button; 4-stowable incoming line; 5-a key take-up device; 6-flexible lead; 7-moving contact; 8-static contact; 9-a protection device; 10-shell.
Detailed Description
As shown in fig. 1-2, a safety test dual-stage knife switch can be used for connecting a test instrument to a power supply in an electrical test, and comprises a shell 10; an observation port 1 with a transparent cover is arranged at the shell; the static contact 8 and the moving contact 7 of the knife switch are positioned in the shell and are arranged below the observation port; the moving contact is connected with an operating handle 2 outside the shell; the moving contact is driven by the operating handle to translate in the shell, and when the moving contact translates to be connected with the fixed contact, the knife switch is switched on; when the moving contact moves horizontally to be separated from the fixed contact, the knife switch is opened.
The static contact is connected with a power supply protection device 9; the moving contact is connected with the inlet wire of the test instrument through the connecting conductor.
The connecting conductor comprises a flexible lead 6 connected with the moving contact, and the flexible lead is connected with the input end of the one-key wire take-up device 5; the one-key wire take-up device is fixed at the shell, and the output end of the one-key wire take-up device is connected with the retractable inlet wire 4; the one-key wire take-up device is provided with a wire take-up button 3 positioned outside the shell.
The flexible conducting wire is bent to meet the requirement of the moving distance of the moving contact.
The retractable inlet wire is an insulated sheath power line with a plug, and the plug can be directly connected with a power box of the test instrument or a power panel of the test instrument; the one-key wire take-up device can also be used as a power panel of a test instrument.
The length that can accomodate the inlet wire is 15m or 30m, when receiving line button and triggered, can accomodate the inlet wire and be drawn into by a key take-up and accomodate.
The static contact is a double-piece open type static contact; when the knife switch is switched on, the moving contact moves horizontally to the opening inserted into the fixed contact.
The shell is a transparent shell.
Example (b):
the retractable incoming line is pulled out from the one-key wire take-up device and connected to the test instrument, and then as shown in fig. 2, the operating handle is pushed downwards, the moving contact and the static contact of the knife switch are connected, and the power supply is conducted.
After the experiment, upwards promote operating handle with the separating brake disconnection power, pull out from test instrument again and can accomodate the inlet wire, press the receipts line button, can accomodate the inlet wire and be drawn into the completion fast by a key take-up and accomodate.
The structure of the one-key wire take-up device in the embodiment is similar to that of an automatic wire take-up device of a dust collector, and a rewind spring is arranged in the one-key wire take-up device and can stretch and contract the electric wire; the rewinding spring is connected with the reel and can drive the reel to rotate, the reel is used for winding and accommodating electric wires, a self-locking device is arranged in the reel and can realize an automatic wire arranging function, the reel is locked by the self-locking device after the cable is pulled out for one section, the power line stops, and only when the winding button is pressed, the reel can be wound in a rotating mode under the driving of the rewinding spring.
Claims (8)
1. The utility model provides an experimental doublestage plug-in strip of safe type, can be used to the test instrument access power among the electrical test which characterized in that: the dual stage blade includes a housing; an observation port with a transparent cover is arranged at the shell; the static contact and the moving contact of the knife switch are positioned in the shell and are arranged below the observation port; the moving contact is connected with an operating handle outside the shell; the moving contact is driven by the operating handle to translate in the shell, and when the moving contact translates to be connected with the fixed contact, the knife switch is switched on; when the moving contact moves horizontally to be separated from the fixed contact, the knife switch is opened.
2. The safety testing dual stage blade according to claim 1, wherein: the static contact is connected with a protection device of a power supply; the moving contact is connected with the inlet wire of the test instrument through the connecting conductor.
3. The safety testing dual stage blade according to claim 2, wherein: the connecting conductor comprises a flexible lead connected with the moving contact, and the flexible lead is connected with the input end of the one-key wire take-up device; the one-key wire take-up device is fixed at the shell, and the output end of the one-key wire take-up device is connected with the retractable inlet wire; the one-key wire take-up device is provided with a wire take-up button positioned outside the shell.
4. The safety testing dual stage blade according to claim 3, wherein: the flexible conducting wire is bent to meet the requirement of the moving distance of the moving contact.
5. The safety testing dual stage blade according to claim 3, wherein: the retractable inlet wire is an insulated sheath power line with a plug, and the plug can be directly connected with a power box of the test instrument or a power panel of the test instrument; the one-key wire take-up device can also be used as a power panel of a test instrument.
6. The safety testing dual stage blade according to claim 5, wherein: the length that can accomodate the inlet wire is 15m or 30m, when receiving line button and triggered, can accomodate the inlet wire and be drawn into by a key take-up and accomodate.
7. The safety testing dual stage blade according to claim 1, wherein: the static contact is a double-piece open type static contact; when the knife switch is switched on, the moving contact moves horizontally to the opening inserted into the fixed contact.
8. The safety testing dual stage blade according to claim 1, wherein: the shell is a transparent shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921349095.2U CN210073690U (en) | 2019-08-20 | 2019-08-20 | Safe type test two-stage knife switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921349095.2U CN210073690U (en) | 2019-08-20 | 2019-08-20 | Safe type test two-stage knife switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210073690U true CN210073690U (en) | 2020-02-14 |
Family
ID=69431016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921349095.2U Active CN210073690U (en) | 2019-08-20 | 2019-08-20 | Safe type test two-stage knife switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210073690U (en) |
-
2019
- 2019-08-20 CN CN201921349095.2U patent/CN210073690U/en active Active
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