CN211579869U - Low-voltage ride through device for frequency converter - Google Patents
Low-voltage ride through device for frequency converter Download PDFInfo
- Publication number
- CN211579869U CN211579869U CN202020159025.7U CN202020159025U CN211579869U CN 211579869 U CN211579869 U CN 211579869U CN 202020159025 U CN202020159025 U CN 202020159025U CN 211579869 U CN211579869 U CN 211579869U
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- low
- voltage ride
- cabinet door
- protection device
- frequency converter
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Abstract
The utility model discloses a low-voltage ride through device for converter, pass through the protection device main casing body including the low-voltage, the preceding terminal surface that the low-voltage passed through the protection device main casing body is installed leading cabinet door, the rear end face that the low-voltage passed through the protection device main casing body is installed rearmounted and is overhauld the cabinet door, two U-shaped handles are evenly installed to the rear side of rearmounted maintenance cabinet door, two connecting plates are evenly installed to the inside of rearmounted maintenance cabinet door, two a plurality of guide connecting rod is evenly installed to the centre of connecting plate, guide connecting rod's the outside is provided with reset spring, the connecting plate is provided with the inserting groove with the centre that the low-voltage passed through the protection. The utility model discloses an install support post, rotation support base and rearmounted maintenance cabinet door convenience device and remove, be convenient for move, and the convenient interconnecting link to the electrical components rear overhauls, maintains and changes simple structure, convenient operation.
Description
Technical Field
The utility model relates to a converter technical field specifically is a low-voltage ride through device for converter.
Background
With the rapid development of social economy, the frequency converter is a power control device which applies frequency conversion technology and microelectronic technology and controls an alternating current motor by changing the frequency mode of a working power supply of the motor, the frequency converter mainly comprises a rectification unit (alternating current to direct current), a filter unit, an inversion unit (direct current to alternating current), a brake unit, a drive unit, a detection unit microprocessing unit and the like, the frequency converter adjusts the voltage and the frequency of an output power supply by the on-off of an internal IGBT, the required power supply voltage is provided according to the actual requirement of the motor, so as to achieve the purposes of energy saving and speed regulation, in addition, the frequency converter has many protection functions, such as overcurrent, overvoltage, overload protection and the like, and along with the continuous improvement of the industrial automation degree, the frequency converter is also widely applied, and the low-voltage ride-through device is a low-voltage protection device for ensuring the use safety of the frequency converter.
However, the existing low voltage ride through device is inconvenient to move when in use, and a connecting line behind an electrical element has the problem that due to the blockage of the electrical element arranged in front, the maintenance is very difficult; therefore, the existing requirements are not met, and a low voltage ride through device for a frequency converter is provided for the purpose.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a low-voltage ride through device for converter to the current low-voltage ride through device that proposes in solving above-mentioned background art is inconvenient when using to remove the device, and goes wrong at electrical components rear interconnecting link because the electric components's of the place ahead installation block, can make to overhaul very difficult scheduling problem.
In order to achieve the above object, the utility model provides a following technical scheme: a low voltage ride through device for a frequency converter comprises a main shell of the low voltage ride through protection device, wherein a front cabinet door is installed on the front end face of the main shell of the low voltage ride through protection device, a rear overhaul cabinet door is installed on the rear end face of the main shell of the low voltage ride through protection device, two U-shaped handles are evenly installed on the rear side of the rear overhaul cabinet door, two connecting plates are evenly installed inside the rear overhaul cabinet door, a plurality of guide connecting rods are evenly installed in the middles of the two connecting plates, a reset spring is arranged outside the guide connecting rods, an inserting groove is formed in the middles of the connecting plates and the main shell of the low voltage ride through protection device, a motor is installed inside the main shell of the low voltage ride through protection device, a motor bevel gear is installed at the front end of the motor, a transmission bevel gear is installed on one side of the motor bevel, the utility model discloses a protection device for low-voltage ride through, including lift worm, threaded sleeve, support stand, low-voltage ride through protection device main casing, lift worm is installed to one side of lift worm, the thread bush is installed to the centre of lift worm, the support post is installed to the centre of thread bush, the rotatory support base is installed to the below of support post, the base is installed to the lower extreme of low-voltage ride through protection device main casing.
Preferably, one end of the support upright post is inserted into the rotary support base, and the support upright post and the rotary support base are fixed through welding.
Preferably, a sealing rubber sleeve is installed on the outer side of one end of the connecting plate, and the sealing rubber sleeve and the connecting plate are fixed through an adhesive.
Preferably, both sides of the main shell body of the low-voltage ride-through protection device are uniformly provided with a plurality of side ventilation protrusions, and hollow ventilation holes are formed in the side ventilation protrusions.
Preferably, a transparent glass window is arranged on the front end face of the front cabinet door, and a plurality of working indicator lamps are uniformly arranged below the glass window.
Preferably, the outer side of the support column and the inner side of the threaded sleeve are both provided with threads, and the support column is in threaded connection with the threaded sleeve.
Preferably, the outer side of the front cabinet door is completely attached to the inner side of the main casing of the low voltage ride through protection device, and the front cabinet door is connected with the main casing of the low voltage ride through protection device through a hinge.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model drives the motor bevel gear to rotate by switching on the power supply of the device, the motor bevel gear rotates to drive the transmission bevel gear and the transmission bevel gear fixed with the transmission bevel gear through the fixed pin, the transmission bevel gear rotates to drive the lifting turbine meshed with the transmission bevel gear to rotate, the lifting turbine rotates to drive the threaded sleeve fixed with the lifting turbine to rotate, so that the threaded sleeve drives the supporting upright post to descend through the threaded connection between the threaded sleeve and the supporting upright post, the universal wheel at the bottom end of the rotary supporting base can gradually contact with the ground along with the descending of the supporting upright post to jack up the whole device, when the supporting upright post descends to the limit, the device can be completely separated from the ground and has a certain height, and the power supply of the device is switched off at the moment, the device can be easily moved through the universal wheel at the bottom end of the rotary supporting base, the device is convenient to carry, the labor intensity is reduced, and the device cannot be damaged in the carrying process;
2. the utility model discloses a appear destroying need examine and repair at the inside electrical components circuit of device, when maintaining and changing, at first starter motor breaks away from device and ground, then carry out motor bevel gear degree rotation with the device, make rearmounted maintenance cabinet door appear in the front of operating personnel, then operating personnel presses two U-shaped handles each other, make two U-shaped handles drive two connecting plates and laminate each other, make the direction connecting rod shrink into inside the connecting plate, the reset spring in the colleague direction connecting rod outside is extruded, after the distance between two connecting plates each other reduces to a certain extent, the tip of connecting plate can break away from the inserting groove is inside, the staff can easily go down rearmounted maintenance cabinet door this moment, make the circuit of electrical components rear connection expose in the front of the operator completely, the circuit that operating personnel can relax this moment overhauls, when the circuit overhauls, Maintenance and replacement do not need to dismantle electrical components, and operation trouble is reduced.
Drawings
Fig. 1 is a schematic overall structure diagram of the present invention;
FIG. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is a schematic structural view of the rear-mounted maintenance cabinet door of the present invention;
fig. 4 is a schematic view of a partial structure of the main housing of the low voltage ride through protection device of the present invention.
In the figure: 1. a low voltage ride through protection device main housing; 2. side ventilating projections; 3. a front cabinet door; 4. a base; 5. a rear maintenance cabinet door is arranged; 6. a U-shaped handle; 7. a connecting plate; 8. a rotating support base; 9. supporting the upright post; 10. a threaded sleeve; 11. lifting the turbine; 12. a lifting scroll bar; 13. a guide link; 14. inserting grooves; 15. a return spring; 16. a drive bevel gear; 17. a motor; 18. and a motor bevel gear.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
The motor 17 of the present invention (model number 6IK120GU-CF) is commercially available or custom made.
Referring to fig. 1 to 4, the present invention provides an embodiment: a low voltage ride through device for a frequency converter comprises a main shell 1 of the low voltage ride through protection device, a front cabinet door 3 is arranged on the front end face of the main shell 1 of the low voltage ride through protection device, a rear overhaul cabinet door 5 is arranged on the rear end face of the main shell 1 of the low voltage ride through protection device, two U-shaped handles 6 are uniformly arranged on the rear side of the rear overhaul cabinet door 5, two connecting plates 7 are uniformly arranged in the rear overhaul cabinet door 5, a plurality of guide connecting rods 13 are uniformly arranged between the two connecting plates 7, a reset spring 15 is arranged on the outer side of each guide connecting rod 13 to facilitate the movement and reset of the connecting plates 7, the rear overhaul cabinet door 5 is convenient to open for overhaul, maintenance and circuit replacement, an inserting groove 14 is arranged between each connecting plate 7 and the main shell 1 of the low voltage ride through protection device, and a motor 17 is arranged in the main shell, motor bevel gear 18 is installed to the front end of motor 17, transmission bevel gear 16 is installed to one side of motor bevel gear 18, lift scroll 12 is installed to the centre of transmission bevel gear 16, lift turbine 11 is installed to one side of lift scroll 12, threaded sleeve 10 is installed to the centre of lift turbine 11, support post 9 is installed to the centre of threaded sleeve 10, rotatory support base 8 is installed to the below of support post 9, can break away from the back with ground at the device, remove and rotate the device, convenient transport and maintenance, base 4 is installed to the lower extreme that the low-voltage passed through the protection device main casing body 1.
Furthermore, one end of the supporting upright post 9 is inserted in the rotating supporting base 8, and the supporting upright post 9 and the rotating supporting base 8 are fixed by welding.
By adopting the technical scheme, the welding enhances the connection performance and the stability of the supporting upright post 9 and the rotary supporting base 8, and has good mechanical strength.
Further, a sealing rubber sleeve is installed on the outer side of one end of the connecting plate 7, and the sealing rubber sleeve and the connecting plate 7 are fixed through an adhesive.
Through adopting above-mentioned technical scheme, the sealing rubber cover can seal the gap, guarantees that vapor and return stroke can not get into inside the device.
Further, both sides of the main shell 1 of the low-voltage ride-through protection device are uniformly provided with a plurality of side ventilation protrusions 2, and hollow ventilation holes are formed in the side ventilation protrusions 2.
By adopting the technical scheme, the heat dissipation of the electrical components in the device is facilitated during working, and the normal operation of the device is ensured.
Furthermore, the front end face of the front cabinet door 3 is provided with a transparent glass window, and a plurality of work indicator lamps are uniformly arranged below the glass window.
By adopting the technical scheme, the working state of the electrical component in the device can be conveniently mastered by a worker in real time.
Further, the outer side of the support upright post 9 and the inner side of the threaded sleeve 10 are both provided with threads, and the support upright post 9 is connected with the threaded sleeve 10 through the threads.
By adopting the technical scheme, the threaded connection is convenient to use, so that the threaded sleeve 10 can control the movement of the support upright post 9.
Further, the outer side of the front cabinet door 3 is completely attached to the inner side of the low voltage ride through protection device main shell 1, and the front cabinet door 3 is connected with the low voltage ride through protection device main shell 1 through a hinge.
Through adopting above-mentioned technical scheme, hinge connection simple structure, convenient to use are convenient for open leading cabinet door 3, and the convenience is overhauld the electrical components and is maintained.
The working principle is as follows: when the device is used, when the device needs to be carried, firstly, a power supply of the device is switched on, the starting motor 17 drives the motor bevel gear 18 to rotate, the motor bevel gear 18 rotates to drive the transmission bevel gear 16 and the transmission bevel gear 16 fixed with the transmission bevel gear 16 through a fixed pin to rotate, the transmission bevel gear 16 drives the lifting turbine 11 meshed with the transmission bevel gear to rotate, the lifting turbine 11 rotates to drive the threaded sleeve 10 fixed with the lifting turbine to rotate, so that the threaded sleeve 10 drives the supporting upright post 9 to descend through threaded connection with the supporting upright post 9, the universal wheel at the bottom end of the rotary supporting base 8 gradually contacts with the ground along with the descending of the supporting upright post 9 to jack up the whole device, when the supporting upright post 9 descends to the limit, the device can be completely separated from the ground and has a certain height, and at the moment, the power supply of the device is switched off, the device can be easily moved through the universal wheels at the bottom end of the rotary supporting base 8, the carrying is convenient, the labor intensity is reduced, the device cannot be damaged in the carrying process, when an electric element circuit in the device is damaged and needs to be overhauled, maintained and replaced, the motor 17 is started to separate the device from the ground, then the device is rotated by 180 degrees through the bevel gear of the motor, the rear overhauling cabinet door 5 is made to be in front of an operator, then the operator presses the two U-shaped handles 6 to enable the two U-shaped handles 6 to drive the two connecting plates 7 to be mutually attached, the guide connecting rod 13 is contracted into the connecting plates 7, the reset spring 15 outside the guide connecting rod 13 is extruded, after the distance between the two connecting plates 7 is reduced to a certain degree, the end parts of the connecting plates 7 can be separated from the inside of the inserting grooves 14, the staff can easily go down rearmounted maintenance cabinet door 5 this moment for the circuit that electrical components rear was connected exposes in the operator completely, and operating personnel can be relaxed overhauls, maintains and changes the circuit this moment, need not dismantle electrical components, reduces troublesome poeration, simple structure, convenient operation.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
1. A low voltage ride through device for a frequency converter, comprising a low voltage ride through protection device main housing (1), characterized in that: the front end face of the main shell (1) of the low-voltage ride-through protection device is provided with a front cabinet door (3), the rear end face of the main shell (1) of the low-voltage ride-through protection device is provided with a rear overhaul cabinet door (5), the rear side of the rear overhaul cabinet door (5) is uniformly provided with two U-shaped handles (6), the inside of the rear overhaul cabinet door (5) is uniformly provided with two connecting plates (7), the middle of the two connecting plates (7) is uniformly provided with a plurality of guide connecting rods (13), the outer side of each guide connecting rod (13) is provided with a reset spring (15), the middle of each connecting plate (7) and the middle of the main shell (1) of the low-voltage ride-through protection device are provided with a plug-in groove (14), the inside of the main shell (1) of the low-voltage ride-through protection device is provided with a motor, drive bevel gear (16) are installed to one side of motor bevel gear (18), lift scroll bar (12) are installed to the centre of drive bevel gear (16), lift turbine (11) are installed to one side of lift scroll bar (12), threaded sleeve (10) are installed to the centre of lift turbine (11), support post (9) are installed to the centre of threaded sleeve (10), rotation support base (8) are installed to the below of support post (9), base (4) are installed to the lower extreme that the low-voltage passed through the protection device main casing body (1).
2. A low voltage ride through device for a frequency converter according to claim 1, wherein: one end of the supporting upright post (9) is inserted in the rotary supporting base (8), and the supporting upright post (9) and the rotary supporting base (8) are fixed through welding.
3. A low voltage ride through device for a frequency converter according to claim 1, wherein: and a sealing rubber sleeve is arranged on the outer side of one end of the connecting plate (7), and the sealing rubber sleeve is fixed with the connecting plate (7) through an adhesive.
4. A low voltage ride through device for a frequency converter according to claim 1, wherein: the low-voltage ride through protection device main casing body (1) both sides all evenly are provided with a plurality of side ventilation arch (2), the inside of side ventilation arch (2) is provided with hollow ventilation hole.
5. A low voltage ride through device for a frequency converter according to claim 1, wherein: the front end face of the front cabinet door (3) is provided with a transparent glass window, and a plurality of working indicator lamps are uniformly arranged below the glass window.
6. A low voltage ride through device for a frequency converter according to claim 1, wherein: the outer side of the supporting upright post (9) and the inner side of the threaded sleeve (10) are both provided with threads, and the supporting upright post (9) is connected with the threaded sleeve (10) through the threads.
7. A low voltage ride through device for a frequency converter according to claim 1, wherein: the outer side of the front cabinet door (3) is completely attached to the inner side of the low-voltage ride-through protection device main shell (1), and the front cabinet door (3) is connected with the low-voltage ride-through protection device main shell (1) through a hinge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020159025.7U CN211579869U (en) | 2020-02-03 | 2020-02-03 | Low-voltage ride through device for frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020159025.7U CN211579869U (en) | 2020-02-03 | 2020-02-03 | Low-voltage ride through device for frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211579869U true CN211579869U (en) | 2020-09-25 |
Family
ID=72524430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020159025.7U Expired - Fee Related CN211579869U (en) | 2020-02-03 | 2020-02-03 | Low-voltage ride through device for frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211579869U (en) |
-
2020
- 2020-02-03 CN CN202020159025.7U patent/CN211579869U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200925 Termination date: 20210203 |