Motor leakage protection device

Abstract

The utility model discloses a motor leakage protection device, which comprises a mounting box and a detection line arranged in the mounting box in a penetrating manner, one end of the detection line is connected with a motor shell, an iron core and an elastic sheet distributed with the iron core at an interval are fixedly arranged in the mounting box, one end of the elastic sheet is connected with an alarm lamp, and the other end of the elastic sheet is connected with a power supply. The other end of the elastic sheet is correspondingly provided with a connecting plate, and the detection line is connected with an enameled wire wound on the periphery of the iron core and a connecting line fixed on the connecting plate. The motor shell is connected with the detection wire, and the detection wire is wound on the periphery of the iron core through the enameled wire, so that when the motor shell leaks electricity, namely the detection wire is electrified, the iron core generates magnetism by utilizing an electromagnet principle to magnetically attract the elastic sheet, and then the alarm lamp is electrified through the elastic sheet and sends an alarm signal so as to give an alarm to an approaching person. And the electric shock prevention device can also be used for reminding a worker to carry out overhaul and maintenance operation in time so as to ensure that the motor can work normally and safely.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric leakage protection technical field especially is related to a motor electric leakage protection device. BACKGROUND

[0002] The motor is a kind of drive equipment for converting electric energy into mechanical energy, and is widely used in industry, agriculture, transportation, household appliances and other fields.

[0003] But sometimes, due to the wear of motor insulation, internal water seepage and other reasons, the motor will leak electricity, that is, the shell of the motor will be electrified, especially in the humid environment such as outdoor operation, which is more likely to cause electric shock and other safety accidents of workers, so that the normal use of the motor has certain safety hazards. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the deficiencies of the prior art, and provides a motor electric leakage protection device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A motor electric leakage protection device, comprising a mounting box and a detection line arranged in the mounting box, one end of the detection line is connected to the motor shell, an iron core and a spring sheet spaced apart from the iron core are fixedly arranged in the mounting box, one end of the spring sheet is connected with an alarm lamp, the other end of the spring sheet is correspondingly provided with a connecting plate, and a enameled wire wound around the outer periphery of the iron core and a connecting line fixed to the connecting plate are connected on the detection line.

[0007] Preferably, the spring sheet is provided with a bending section, the one end of the spring sheet is provided with an abutting end abutting against the connecting plate, a magnet corresponding to the iron core is fixed on the spring sheet, and the magnet is located between the bending section and the abutting end.

[0008] Preferably, the connecting plate is provided with a contact point corresponding to the abutting end.

[0009] Preferably, the mounting box is fixedly provided with an insulating seat one and an insulating seat two in opposite arrangement, the connecting plate is fixedly installed on the insulating seat one, and the one end of the spring sheet is fixedly installed on the insulating seat two.

[0010] Preferably, a pull rope alarm is arranged in the mounting box, and a pull rope connected to the spring sheet is arranged on the pull rope alarm.

[0011] Preferably, a through hole is formed in the spring sheet, and the pull rope is fixedly arranged in the through hole.

[0012] Preferably, a box cover is arranged on the mounting box, and an observation window is formed in the box cover.

[0013] As preferred, the installation box is provided with a connector for connecting the detection line, and the enameled wire and the connecting line are connected with the detection line through the connector.

[0014] As preferred, a grounding line is connected to the other end of the enameled wire, and a zero line corresponding to the connecting line is connected to the alarm lamp.

[0015] As preferred, a fixing base is arranged in the installation box, and the iron core is arranged on the fixing base.

[0016] The utility model discloses beneficial effects are:

[0017] 1. the motor shell is connected detection line, and the detection line is wound on the outer periphery of the iron core through the enameled wire, when the motor shell is electrified, i.e. the detection line is electrified, the iron core is made magnetism by using electromagnet principle, and the alarm lamp is electrified and sends out alarm signal through the elastic sheet, and the alarm signal is sent to the person who approaches, prevents the situation of accidental electric shock from happening, and also can be used to prompt the staff to carry out maintenance operation in time, to guarantee that the motor can work normally and safely.

[0018] 2. the installation box is provided with a pull rope alarm, and the pull rope is connected to the elastic sheet, when the elastic sheet is displaced by magnetic attraction, the elastic sheet can start the pull rope alarm and send out alarm signal by pulling the pull rope, and then the pull rope alarm cooperates with the alarm lamp to carry out alarm warning, so that the electric shock warning protection of the motor is more reliable. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the structural schematic diagram of the utility model;

[0020] Figure 2 It is the internal structure schematic diagram of the utility model Figure 1 ;

[0021] Figure 3 It is the internal structure schematic diagram of the utility model Figure 2 ;

[0022] Figure 4 It is Figure 3 the enlarged schematic view of A in the utility model;

[0023] Figure 5 It is the structural schematic diagram of the elastic sheet of the utility model.

[0024] In the drawing: installation box 1, fixing base 11, connector 12, insulating seat one 13, insulating seat two 14, box cover 2, observation window 21, detection line 3, enameled wire 31, grounding line 311, connecting line 32, zero line 321, iron core 4, connecting plate 5, contact 51, elastic sheet 6, bending section 61, magnet 62, abutting end 63, through hole 64, pull rope alarm 7, pull rope 71, alarm lamp 8. DETAILED DESCRIPTION

[0025] The utility model will be further described below in combination with the drawings and specific embodiments:

[0026] In the description of the present application, the terms "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the utility model.

[0027] As shown in Figures 1-5 A motor leakage protection device, comprising a mounting box 1 and a detection line 3 arranged in the mounting box 1, one end of the detection line 3 is connected to the motor shell, the other end of the detection line 3 extends into the mounting box 1, the detection line 3 is used for electrically connecting to the motor shell, when the motor shell is electrified, the detection line 3 is also electrified.

[0028] The mounting box 1 is fixedly provided with an iron core 4 and a spring sheet 6 spaced from the iron core 4, the other end of the spring sheet 6 is correspondingly provided with a connecting plate 5, the iron core 4 and the spring sheet 6 are both metal conductive materials, the detection line 3 is connected with an enameled wire 31 wound around the outer periphery of the iron core 4 and a connecting line 32 fixed to the connecting plate 5, the other end of the enameled wire 31 is connected with a grounding wire 311, that is, the other end of the enameled wire 31 is grounded through the grounding wire 311.

[0029] The mounting box 1 is provided with a connector 12 connected with the detection line 3, the enameled wire 31 and the connecting line 32 are connected with the detection line 3 through the connector 12, that is, when the detection line 3 is electrified, the enameled wire 31 and the connecting line 32 are also electrified, and then the iron core 4 can generate magnetism through the principle of electromagnet to magnetically attract the spring sheet 6, so that the spring sheet 6 abuts against and contacts the connecting plate 5.

[0030] One end of the spring sheet 6 is connected with an alarm lamp 8, the alarm lamp 8 is connected with a zero line 321 corresponding to the connecting line 32, the alarm lamp 8 extends out of the mounting box 1, and when the spring sheet 6 is magnetically attracted and displaced to abut against the connecting plate 5, the connecting line 32 conducts electricity to the spring sheet 6 through the connecting plate 5, at this time, the alarm lamp 8 is electrified to send out an alarm signal to warn approaching personnel, preventing accidental electric shock.

[0031] And the alarm signal sent out by the alarm lamp 8 can also be used to prompt the staff to carry out maintenance work in time to ensure that the motor can work normally and safely.

[0032] In order to ensure the safety of the installation box 1, the installation box 1 is fixedly provided with an insulating seat one 13 and an insulating seat two 14, the connecting plate 5 is fixedly installed on the insulating seat one 13, one end of the elastic sheet 6 is fixedly installed on the insulating seat two 14, and a fixing seat 11 is also installed in the installation box 1, the fixing seat 11 is also made of insulating material, and the iron core 4 is installed on the fixing seat 11. Through the setting of the fixing seat 11, the insulating seat one 13 and the insulating seat two 14, the electrically charged elastic sheet 6 and the connecting plate 5 can avoid conducting electricity to the installation box 1 to cause safety hazards, and can also avoid the safety problems such as conduction of the iron core 4 and the installation box 1 caused by the insulation wear of the enameled wire 31, so that the use of the embodiment is safer and more reliable.

[0033] Further, the elastic sheet 6 is provided with a bending section 61 which is thinner than other parts of the elastic sheet 6, so that the elastic sheet 6 is more easily deformed and bent by magnetic attraction. One end of the elastic sheet 6 is provided with an abutting end 63 abutting against the connecting plate 5, and the connecting plate 5 is provided with a contact 51 corresponding to the abutting end 63. When the elastic sheet 6 is displaced by magnetic attraction and abuts against the connecting plate 5, the abutting end 63 and the contact 51 are arranged in opposite directions, so that the contact and conduction between the elastic sheet 6 and the connecting plate 5 are more reliable.

[0034] In order to improve the deformation reliability of the elastic sheet 6 under magnetic attraction, a magnet 62 corresponding to the iron core 4 is fixedly arranged on the elastic sheet 6, and the magnet 62 is located between the bending section 61 and the abutting end 63. The magnet 62 can cooperate with the magnetic force generated by the iron core 4 after being electrified, so that the magnetic attraction force of the elastic sheet 6 is larger and the elastic sheet 6 is more easily deformed to contact and conduct electricity with the connecting plate 5, thereby triggering the alarm work of the alarm lamp 8.

[0035] In order to improve the reliability of the installation box 1, a pull cord alarm 7 is arranged in the installation box 1, and the pull cord alarm 7 is provided with a pull cord 71 connected to the elastic sheet 6. Specifically, a through hole 64 is formed in the elastic sheet 6, and the pull cord 71 is fixedly arranged in the through hole 64. When the elastic sheet 6 is deformed and displaced by magnetic attraction, the elastic sheet 6 can pull the pull cord 71 to start the pull cord alarm 7 to send an alarm signal. The pull cord alarm 7 cooperates with the alarm lamp 8 to alarm and warn, so that the pull cord alarm 7 or the alarm lamp 8 cannot alarm alone, and the leakage warning protection of the motor is more reliable.

[0036] The installation box 1 is provided with a box cover 2, and the box cover 2 is provided with an observation window 21. The observation window 21 is fixedly provided with transparent organic glass, so that the action of the elastic sheet 6 can be more directly observed through the observation window 21.

[0037] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A leakage protection device for an electric machine, comprising a mounting box (1) and a detection wire (3) arranged in the mounting box (1), one end of the detection wire (3) being connected to a housing of the electric machine, characterized in that: The installation box (1) is internally fixed with an iron core (4) and elastic sheets (6) distributed at intervals with the iron core (4), one end of the elastic sheet (6) is connected with an alarm lamp (8), the other end of the elastic sheet (6) is correspondingly provided with a connecting plate (5), the detection line (3) is connected with an enameled wire (31) wound on the outer periphery of the iron core (4) and a connecting wire (32) fixed to the connecting plate (5); The elastic sheet (6) is provided with a bending section (61), one end of the elastic sheet (6) is provided with an abutting end (63) abutting against the connecting plate (5), the elastic sheet (6) is fixed with a magnet (62) corresponding to the iron core (4), the magnet (62) is located between the bending section (61) and the abutting end (63); The connecting plate (5) is provided with a contact (51) corresponding to the abutting end (63); The installation box (1) is internally provided with a connector (12) connected with the detection line (3), the enameled wire (31) and the connecting wire (32) are connected with the detection line (3) through the connector (12); The other end of the enameled wire (31) is connected with a grounding wire (311), the alarm lamp (8) is connected with a zero line (321) corresponding to the connecting wire (32).

2. An electrical machine earth leakage protection device as claimed in claim 1, characterised in that: The installation box (1) is internally fixedly provided with oppositely arranged insulating seat one (13) and insulating seat two (14), the connecting plate (5) is fixedly installed on the insulating seat one (13), one end of the elastic sheet (6) is fixedly installed on the insulating seat two (14).

3. An electrical machine earth leakage protection device as claimed in claim 1, wherein: The installation box (1) is internally provided with a pull cord alarm (7), the pull cord alarm (7) is provided with a pull cord (71) connected with the elastic sheet (6).

4. An earth leakage protection device for an electric motor as claimed in claim 3 wherein: The elastic sheet (6) is provided with a through hole (64), the pull cord (71) is fixedly penetrated through the through hole (64).

5. An electrical machine leakage protection device as claimed in claim 1, characterized in that: The installation box (1) is provided with a box cover (2), the box cover (2) is provided with an observation window (21).

6. An electrical machine earth leakage protection device as claimed in claim 1 wherein: The installation box (1) is internally provided with a fixing seat (11), the iron core (4) is installed on the fixing seat (11).

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