CN214012818U - Locking switch in explosion-proof frequency converter shell - Google Patents
Locking switch in explosion-proof frequency converter shell Download PDFInfo
- Publication number
- CN214012818U CN214012818U CN202023307388.XU CN202023307388U CN214012818U CN 214012818 U CN214012818 U CN 214012818U CN 202023307388 U CN202023307388 U CN 202023307388U CN 214012818 U CN214012818 U CN 214012818U
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- switch
- explosion
- isolating switch
- proof
- frequency converter
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Abstract
The utility model provides a locking switch in an explosion-proof frequency converter shell, which comprises an explosion-proof locking device and an explosion-proof switch device which are arranged up and down on the shell, wherein the explosion-proof locking device is provided with a button and a micro switch at the rear part of the button, and the micro switch is connected with an isolating switch through a wire; the explosion-proof switch device comprises an isolating switch handle and a rotating disc connected with the isolating switch handle, wherein an arc groove is formed in the rotating disc, an isolating switch pin shaft is arranged in the arc groove, and the rotating angle of the isolating switch handle is limited at two limit positions of the arc groove through the isolating switch pin shaft; a notch is formed in the upper end of the rotating disc and can be limited by a button; a square bar penetrates through the middle of the rotating disc, and an isolating switch is inserted into the other side of the square bar. The utility model discloses compact structure, simple to operate uses reliably.
Description
Technical Field
The utility model relates to an isolator especially relates to a blocking switch in explosion-proof converter casing.
Background
The frequency converter is an electric control device which applies a frequency conversion technology and a microelectronic technology and controls an alternating current motor by changing the frequency mode of a working power supply of the motor. The frequency converter also has a plurality of protection functions, such as overcurrent, overvoltage, overload protection and the like. With the continuous improvement of the industrial automation degree, the frequency converter has very wide application in various fields.
The structure that the explosion-proof casing protection converter is additionally arranged outside the frequency converter is quite extensive, but after the setting of a general explosion-proof casing, if the frequency converter needs to be mediated, the protection casing outside the frequency converter needs to be opened, and due to the requirements of production environment and production safety, a machine needs to be closed sometimes, so that the waste of time is caused. Therefore, the structure that the frequency converter can be directly controlled without opening the explosion-proof shell is very necessary, the production time can be saved, and the working efficiency can be improved.
SUMMERY OF THE UTILITY MODEL
The utility model provides a latching switch in explosion-proof converter casing for solve explosion-proof casing internal rotation handle and isolator's latching problem, its technical scheme as follows:
a locking switch in an explosion-proof frequency converter shell comprises an explosion-proof locking device and an explosion-proof switch device which are arranged in the shell from top to bottom, wherein the explosion-proof locking device is provided with a button and a micro switch behind the button, and the micro switch is connected with an isolating switch through a wire; the explosion-proof switch device comprises an isolating switch handle and a rotating disc connected with the isolating switch handle, wherein an arc groove is formed in the rotating disc, an isolating switch pin shaft is arranged in the arc groove, and the rotating angle of the isolating switch handle is limited at two limit positions of the arc groove through the isolating switch pin shaft; a notch is formed in the upper end of the rotating disc and can be limited by a button; a square bar penetrates through the middle of the rotating disc, and an isolating switch is inserted into the other side of the square bar.
The micro switch is fixedly arranged on the shell through a micro switch fixing disc.
The explosion-proof locking device further comprises a copper sleeve and a seat which are in interference fit, the copper sleeve is located on the inner side of the seat, a through hole in the middle of the copper sleeve is used for penetrating through the button, and the button is reset through a spring installed on the copper sleeve.
The micro switch is provided with a contact, and the contact sends a signal when touching the button.
A lock seat is arranged between the isolating switch handle and the rotating disc, and the isolating switch handle and the lock seat are welded into a whole.
The lock seat and the rotating disc are fixedly connected through the concave-convex groove in a clamping mode.
The explosion-proof switch device further comprises a fixed disc and a copper sleeve, the copper sleeve is fixedly mounted on the shell, a through hole in the copper sleeve is used for penetrating through the lock seat, the lock seat can rotate around a central shaft of the copper sleeve, and the front position and the rear position of the lock seat are clamped by the fixed disc.
The arc groove is 1/4 arcs, and the limiting rotating disc and the corresponding isolating switch handle can only rotate 90 degrees.
The isolating switch pin shaft is fixed on the shell.
The locking switch in the explosion-proof frequency converter shell has the advantages of compact structure, convenience in installation and reliability in use.
Drawings
FIG. 1 is a front view of a latching switch within the explosion-proof frequency converter housing;
FIG. 2 is a schematic structural diagram of a latching switch in the explosion-proof frequency converter shell;
fig. 3 is a rear view of the latching switch within the explosion-proof frequency converter housing.
Detailed Description
The utility model provides a latching switch in explosion-proof converter casing, including explosion-proof blocking device and explosion-proof switching device, explosion-proof blocking device is located explosion-proof switching device top.
As shown in fig. 1 to 3, the explosion-proof locking device comprises a microswitch fixing disc 8, a seat 9, a copper sleeve 10, a button 11, a spring 12 and a microswitch 13.
The seat 9 is fixedly arranged on the shell 20, the copper sleeve 10 and the seat 9 are in interference fit and integrated, and the seat 9 is arranged on the outer side of the copper sleeve 10. The front of casing 20 is provided with data plate 15, and screw 16 fixed mounting has micro-gap switch fixed disk 8 for the back, micro-gap switch 13 fixed mounting is on micro-gap switch fixed disk 8.
The middle of the copper sleeve 10 is provided with a through hole, a button 11 is installed in the through hole, the button 11 is in a T shape which is laid down, the sectional area of the left side of the button 11 is larger than that of the right side of the button, the upper end and the lower end of the left side of the button are fixedly connected with the through hole through a spring 12, and the button 11 can be restored through the spring 12 after being pressed down each time.
The right end of the button 11 is in contact with the microswitch 13, and the microswitch 13 is provided with a contact which is retracted when touching the button 11 to start a signal. The microswitch 13 is connected with the isolating switch line.
A nameplate 15 is fixed to the front of the housing.
The explosion-proof switch device comprises a fixed disc 1, a copper sleeve 2, an isolating switch handle 3, a lock seat 4, a rotating disc 5, an isolating switch pin shaft 6 and a square bar 7.
The copper bush 2 is fixedly arranged on the shell 20 and is in interference fit with the shell 20 to be integrated. Isolator handle 3 welds as an organic wholely with lock seat 4, lock seat 4 blocks fixed connection through the tongue and groove with rolling disc 5, lock seat 4 can rotate around the center pin of copper sheathing 2, and its front and back position is blocked by fixed disk 1.
The rotary disc 5 is provided with an arc groove 14 of 1/4, the arc groove 14 is internally provided with an isolating switch pin shaft 6 on a fixed shell, the rotary disc 5 can only rotate 90 degrees, and the two limit positions of the rotary disc 5 are determined by the position of the isolating switch pin shaft 6 in the arc groove of the rotary disc 5, so that the on-off positions of the isolating switch are realized. A notch in contact with the button 11 is arranged above the rotating disc 5, when the rotating disc 5 is at an off position, the rotating disc 5 can be locked by the locking button 11, and the locking button 11 is locked with the notch of the rotating disc 5.
The middle part of the rotating disc 5 is penetrated with a square bar 7, the right side of the square bar 7 is inserted with an isolating switch, the isolating switch and the rotating disc are connected through the square bar 7, the square bar 7 is in a cuboid shape with a square cross section, one side of the square bar 7 rotates to form a circumference 1/4, the isolating switch rotates by 90 degrees, and then the isolating switch can be switched on and off. The left side of the square bar 7 is inserted into the rotating disk 5. The square bar 7, the rotating disc 5 and the isolating switch handle 3 can rotate around the central axis of the copper sleeve 2.
The device enables the isolating switch to have two states of disconnection and connection and corresponds to two limit positions of the isolating switch pin shaft 6 in the arc groove 14 of the rotating disc 5. The isolating switch handle 3 is in a vertical position, the isolating switch is in a disconnected state at the moment, and the isolating switch pin shaft 6 is located at one end of the arc groove 14. The button 11 moves rightwards when being pressed down, the button 11 touches a contact of the micro switch 13, the micro switch 13 sends a signal, and then the isolating switch is in a power-off zero-load state, the button 11 does not block the rotating disc 5 any more, the isolating switch handle 3 is rotated, at the moment, the isolating switch handle 3 sequentially drives the lock seat 4, the rotating disc 5 and the square bar 7 to rotate (the isolating switch handle 3 rotates 90 degrees, the square bar 7 rotates 90 degrees, one side length is changed, the cross section of the square bar 7 is square, the isolating switch can be turned off and on by rotating 90 degrees), until the isolating switch handle 3 reaches a horizontal position, the isolating switch pin shaft 6 reaches the other end of the arc groove 14, and the isolating switch is in a switch-on state. The isolating switch is in two different states of switching off and switching on, and the explosion-proof electromechanical control locking of the isolating switch is realized through the association of the explosion-proof switch device 3 and the microswitch 13.
During the use, isolator handle 3 is when vertical position, and isolator is the off-state, and locking button 11 is rebounded under the effect of the elasticity of spring 12, and rolling disc 5 is locked by locking button 11, and is unable to rotate, and isolator is in the disconnection, and the user can carry out maintenance.
After the maintenance is finished, the locking button 11 is pressed down, the isolating switch handle 3 is rotated to be in a horizontal state, the isolating switch is in a switch-on state, the notch of the rotating disc 5 moves to the horizontal position, and the locking button 11 cannot move backwards and is blocked by the rotating disc 5.
When a problem is found in operation, the locking button 11 is pressed, the locking button 11 triggers the micro switch 13, the micro switch 13 sends a signal, the isolating switch stops working, and the isolating switch is cut off under zero load, namely when the isolating switch is switched on and off, the isolating switch must be operated under the zero load state. The design is in accordance with the explosion-proof standard GB 3836.
The locking switch in the explosion-proof frequency converter shell has the advantages of compact structure, convenience in installation and reliability in use.
Claims (9)
1. The utility model provides a shutting switch in explosion-proof converter casing which characterized in that: the explosion-proof locking device is provided with a button and a microswitch behind the button, and the microswitch is connected with the isolating switch through a wire; the explosion-proof switch device comprises an isolating switch handle and a rotating disc connected with the isolating switch handle, wherein an arc groove is formed in the rotating disc, an isolating switch pin shaft is arranged in the arc groove, and the rotating angle of the isolating switch handle is limited at two limit positions of the arc groove through the isolating switch pin shaft; a notch is formed in the upper end of the rotating disc and can be limited by a button; a square bar penetrates through the middle of the rotating disc, and an isolating switch is inserted into the other side of the square bar.
2. The latching switch in an explosion proof frequency converter housing of claim 1, wherein: the micro switch is fixedly arranged on the shell through a micro switch fixing disc.
3. The latching switch in an explosion proof frequency converter housing of claim 1, wherein: the explosion-proof locking device further comprises a copper sleeve and a seat which are in interference fit, the copper sleeve is located on the inner side of the seat, a through hole in the middle of the copper sleeve is used for penetrating through the button, and the button is reset through a spring installed on the copper sleeve.
4. The latching switch in an explosion proof frequency converter housing of claim 1, wherein: the micro switch is provided with a contact, and the contact sends a signal when touching the button.
5. The latching switch in an explosion proof frequency converter housing of claim 1, wherein: a lock seat is arranged between the isolating switch handle and the rotating disc, and the isolating switch handle and the lock seat are welded into a whole.
6. The latching switch in an explosion proof frequency converter housing of claim 5, wherein: the lock seat and the rotating disc are fixedly connected through the concave-convex groove in a clamping mode.
7. The latching switch in an explosion proof frequency converter housing of claim 5, wherein: the explosion-proof switch device further comprises a fixed disc and a copper sleeve, the copper sleeve is fixedly mounted on the shell, a through hole in the copper sleeve is used for penetrating through the lock seat, the lock seat can rotate around a central shaft of the copper sleeve, and the front position and the rear position of the lock seat are clamped by the fixed disc.
8. The latching switch in an explosion proof frequency converter housing of claim 1, wherein: the arc groove is 1/4 arcs, and the limiting rotating disc and the corresponding isolating switch handle can only rotate 90 degrees.
9. The latching switch in an explosion proof frequency converter housing of claim 1, wherein: the isolating switch pin shaft is fixed on the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023307388.XU CN214012818U (en) | 2020-12-30 | 2020-12-30 | Locking switch in explosion-proof frequency converter shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023307388.XU CN214012818U (en) | 2020-12-30 | 2020-12-30 | Locking switch in explosion-proof frequency converter shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214012818U true CN214012818U (en) | 2021-08-20 |
Family
ID=77293936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023307388.XU Active CN214012818U (en) | 2020-12-30 | 2020-12-30 | Locking switch in explosion-proof frequency converter shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214012818U (en) |
-
2020
- 2020-12-30 CN CN202023307388.XU patent/CN214012818U/en active Active
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