CN219068049U

CN219068049U - Frequency converter with electric leakage warning structure

Info

Publication number: CN219068049U
Application number: CN202223073738.XU
Authority: CN
Inventors: 秦飞; 朱荣华
Original assignee: Jiangsu Rbca Automation Technology Co ltd
Current assignee: Jiangsu Rbca Automation Technology Co ltd
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-05-23
Anticipated expiration: 2032-11-18

Abstract

The utility model discloses a frequency converter with an electric leakage warning structure, and relates to the technical field of frequency converters. According to the utility model, whether the electric leakage of the electronic element is detected by the electric leakage detector, and the alarm is electrified after the electric leakage occurs, so that an alarm is sent out, the maintenance is convenient for a maintainer, then the movable assembly is rotated to drive the clamping rod to move, and the insulating plate is popped out by the limiting assembly, so that the worker can conveniently move out of the shell to carry out maintenance, the electric shock caused by the direct contact of the worker with the shell is avoided, and the safety protection of the worker is increased.

Description

Frequency converter with electric leakage warning structure

Technical Field

The utility model relates to the technical field of frequency converters, in particular to a frequency converter with an electric leakage warning structure.

Background

The frequency converter is a power control device which controls the alternating current motor by changing the frequency of a working power supply of the motor by applying a frequency conversion technology and a microelectronic technology. The frequency converter mainly comprises a rectifying unit (alternating current to direct current), a filtering unit, an inverting unit (direct current to alternating current), a braking unit, a driving unit, a detecting unit micro-processing unit and the like. The frequency converter adjusts the voltage and frequency of the output power supply by switching on and off the internal IGBT, and provides the required power supply voltage according to the actual requirement of the motor, thereby achieving the purposes of energy saving and speed regulation.

The three-phase stator winding of the frequency converter motor generates a rotating magnetic field after current flows through the three-phase stator winding, and according to the principle of electromagnetic induction, the shell of the motor generates induced electromotive force, and because the potential difference exists between the shell of the motor and the shell of the box body, an operator can feel electric shock when touching the shell, when the frequency converter is used, when the frequency converter is subjected to electric leakage, a worker is required to power off the frequency converter and then overhaul, and before the power is off, the potential safety hazard can be easily caused when the operator touches the frequency converter.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a frequency converter with a leakage warning structure.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a converter with electric leakage warning structure, includes the casing, the inside of casing is provided with electronic component, the equal sliding connection of both sides internal surface of casing has the insulation board, be provided with electric leakage detector on the electronic component, the top of casing is provided with the alarm, electronic component's both sides all are connected with two spacing subassemblies that are used for controlling two insulation boards, spacing subassembly including being fixed in the fixed pipe of electronic component surface, the internal surface sliding connection of fixed pipe has the movable rod, the movable rod is close to the one end fixedly connected with limiting plate of fixed pipe, the surface of limiting plate with the internal surface sliding connection of fixed pipe, four the equal sliding connection of rear side internal surface of fixed pipe has the clamping pole, the surface of clamping pole with the internal surface sliding connection of limiting plate, the internal connection of casing has the removal subassembly that is used for pulling four the clamping pole to remove.

As a further description of the above technical solution:

the movable assembly comprises a screw rod which is connected to the outer surface of the shell in a threaded mode, a rotating plate is fixedly connected to the rear end of the screw rod, a connecting plate is rotatably connected to the front end of the screw rod, and the front side of the connecting plate is fixedly connected with the rear ends of the four clamping connection rods.

As a further description of the above technical solution:

and the front ends of the four clamping connection rods are inclined surfaces at one side far away from the electronic element.

As a further description of the above technical solution:

the rear side of the inner wall of the shell is fixedly connected with a limiting rod, and the outer surface of the limiting rod is in sliding connection with the inner surface of the connecting plate.

As a further description of the above technical solution:

the front side inner surfaces and the rear side inner surfaces of the two insulating plates are both connected with guide blocks in a sliding mode, and the guide blocks are fixedly connected with the shell.

As a further description of the above technical solution:

and the outer surfaces of the four moving rods are respectively sleeved with a limiting spring, and two ends of each limiting spring are respectively and fixedly connected with the limiting plate and the fixed pipe.

The utility model has the following beneficial effects:

compared with the prior art, this converter with electric leakage warning structure detects whether electric leakage through the electric leakage detector, and is circular telegram to the alarm after taking place the electric leakage to send out the police dispatch newspaper and make things convenient for the maintainer to maintain, then rotate and remove the subassembly and drive the clamping pole and remove, pop out the insulation board through spacing subassembly and make things convenient for the staff to shift out the casing, thereby overhaul, avoid staff direct contact casing to cause the electric shock, increased the safety protection to the staff.

Drawings

Fig. 1 is a perspective view of a frequency converter with a leakage warning structure according to the present utility model;

FIG. 2 is a top view of a frequency converter with a leakage warning structure according to the present utility model;

FIG. 3 is a front view of a portion of a frequency converter with a leakage warning structure according to the present utility model;

fig. 4 is an enlarged view at a shown in fig. 2.

Legend description:

1. a housing; 2. an electronic component; 3. a leakage detector; 4. a fixed tube; 5. a moving rod; 6. a limiting plate; 7. a limit spring; 8. an insulating plate; 9. a clamping rod; 10. a connecting plate; 11. a screw; 12. a rotating plate; 13. a limit rod; 14. a guide block; 15. an alarm.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a frequency converter with a leakage warning structure: including casing 1, casing 1's inside is provided with electronic component 2, casing 1's both sides internal surface equal sliding connection has insulation board 8, the equal sliding connection of front side internal surface and rear side internal surface of two insulation boards 8 has guide block 14, guide block 14 and casing 1 fixed connection, it is spacing to insulation board 8 through guide block 14, avoid insulation board 8 to shift out casing 1, make insulation board 8 stable at casing 1 internal sliding, be provided with electric leakage detector 3 on electronic component 2, casing 1's top is provided with alarm 15, electronic component 2's both sides all are connected with two spacing subassemblies that are used for controlling two insulation boards 8, spacing subassembly is including being fixed in the fixed pipe 4 of electronic component 2 surface, the internal surface sliding connection of fixed pipe 4 has movable rod 5, the one end fixedly connected with limiting plate 6 that movable rod 5 is close to fixed pipe 4, the surface sliding connection of limiting plate 6 and the internal surface of fixed pipe 4, the surface of four movable rod 5 all overlaps and is equipped with spacing spring 7, the both ends of spacing spring 7 are fixed connection respectively at limiting plate 6 and fixed pipe 4, the equal sliding connection of rear side internal surface of four fixed pipe 4 has the card 9 to push out 9 at the inside the fixed pipe 4, thereby the inside the casing 9 is used for moving out at the fixed pipe 1 through the fixed pipe 9, the inside is connected with the fixed pipe 9 through the fixed pipe 6, the inside connection of movable rod is used for moving the inside 9.

Further, the moving assembly comprises a screw 11 which is in threaded connection with the outer surface of the shell 1, a rotating plate 12 is fixedly connected with the rear end of the screw 11, a connecting plate 10 is rotationally connected with the front end of the screw 11, the front side of the connecting plate 10 is fixedly connected with the rear ends of four clamping rods 9, a limiting rod 13 is fixedly connected with the rear side of the inner wall of the shell 1, the outer surface of the limiting rod 13 is in sliding connection with the inner surface of the connecting plate 10, the connecting plate 10 is limited through the limiting rod 13, the connecting plate 10 stably slides in the shell 1, one side, far away from the electronic element 2, of the front ends of the four clamping rods 9 is inclined, the clamping rods 9 have elasticity, the insulating plate 8 is pushed into the shell 1, the limiting plate 6 is driven to move in the fixed tube 4, the limiting spring 7 stretches, after the clamping rods 9 move to the limiting plate 6, the limiting plate 6 moves out of the fixed tube 4 due to the inclined surface of the clamping rods 9, and then the limiting plate 9 stretches out to clamp the limiting plate 6.

Working principle: when the leakage detector 3 detects that the electronic element 2 leaks electricity, the alarm 15 is started to give an alarm to remind a worker to overhaul, the worker needs to rotate the rotating plate 12 first to drive the screw rods 11 to rotate and move, so that the connecting plate 10 moves synchronously to drive the four clamping rods 9 to move, the clamping rods 9 move out of the limiting plate 6, the moving rod 5 is pushed to move in the fixed tube 4 through elasticity of the limiting spring 7, the insulating plate 8 pops out of the shell 1, and the worker holds the insulating plate 8 to move the frequency converter;

when the overhaul is completed, the rotating plate 12 is rotated to drive the screw 11 to rotate and move, the connecting plate 10 drives the clamping rod 9 to move forwards, then the insulating plate 8 is pushed into the shell 1, the limiting plate 6 is driven to move in the fixed pipe 4, the limiting spring 7 is stretched, after the clamping rod 9 moves into the limiting plate 6, the limiting plate 6 is clamped, and the insulating plate 8 is reset, so that the next use is convenient.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. Frequency converter with electric leakage warning structure, including casing (1), its characterized in that: the inside of casing (1) is provided with electronic component (2), the equal sliding connection of both sides internal surface of casing (1) has insulation board (8), be provided with electric leakage detector (3) on electronic component (2), the top of casing (1) is provided with alarm (15), the both sides of electronic component (2) all are connected with two spacing subassemblies that are used for controlling two insulation boards (8), spacing subassembly including being fixed in fixed pipe (4) of electronic component (2) surface, the internal surface sliding connection of fixed pipe (4) has movable rod (5), movable rod (5) are close to one end fixedly connected with limiting plate (6) of fixed pipe (4), the surface of limiting plate (6) with the internal surface sliding connection of fixed pipe (4), four the equal sliding connection of rear side internal surface of fixed pipe (4) has clamping rod (9), the surface of clamping rod (9) with the internal surface sliding connection of limiting plate (6), the internal connection of casing (1) has four clamping rod (9) to be used for the removal subassembly of clamping rod (9).

2. The frequency converter with leakage warning structure according to claim 1, wherein: the movable assembly comprises a screw rod (11) which is in threaded connection with the outer surface of the shell (1), a rotating plate (12) is fixedly connected with the rear end of the screw rod (11), a connecting plate (10) is rotatably connected with the front end of the screw rod (11), and the front side of the connecting plate (10) is fixedly connected with the rear ends of the four clamping connecting rods (9).

3. The frequency converter with leakage warning structure according to claim 1, wherein: the front ends of the four clamping connection rods (9) are inclined surfaces at one side far away from the electronic element (2).

4. The frequency converter with leakage warning structure according to claim 2, wherein: the rear side of the inner wall of the shell (1) is fixedly connected with a limiting rod (13), and the outer surface of the limiting rod (13) is in sliding connection with the inner surface of the connecting plate (10).

5. The frequency converter with leakage warning structure according to claim 1, wherein: the front inner surfaces and the rear inner surfaces of the two insulating plates (8) are both connected with guide blocks (14) in a sliding mode, and the guide blocks (14) are fixedly connected with the shell (1).

6. The frequency converter with leakage warning structure according to claim 1, wherein: and the outer surfaces of the four movable rods (5) are respectively sleeved with a limiting spring (7), and two ends of each limiting spring (7) are respectively and fixedly connected with the limiting plate (6) and the fixed pipe (4).