CN203630312U - Direct current motor armature fault detection device - Google Patents
Direct current motor armature fault detection device Download PDFInfo
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- CN203630312U CN203630312U CN201420009319.6U CN201420009319U CN203630312U CN 203630312 U CN203630312 U CN 203630312U CN 201420009319 U CN201420009319 U CN 201420009319U CN 203630312 U CN203630312 U CN 203630312U
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- direct current
- contactor
- switch
- armature
- autotransformer
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Abstract
The utility model provides a direct current motor armature fault detection device, and relates to the motor fault detection field. The fault detection device is aimed to solve the problem of low detected fault type accuracy caused by various kinds of devices for detecting armature faults in the prior art. The detection device comprises a housing, a power supply switch, a No.1 fuse, a No.2 fuse, an alternating current contactor, a starting switch, a stop switch, an indication lamp, an autotransformer, a transformer, a voltmeter, a check lamp, a millivoltmeter, a full-bridge rectifying circuit and a plurality of detection terminals. When faults of a direct current motor are detected, the power supply switch is turned on, the starting switch is pressed, then an object to be detected is placed on the detection terminals, and detection of faults of the direct current motor can be achieved. The fault detection device is suitable for detection of faults of a direct current motor.
Description
Technical field
The utility model relates to electrical fault detection field.
Background technology
Direct current generator work under bad environment on the power shovel using in colliery, easily causes direct current generator to break down.In the time that armature of direct current motor fault is detected, test item is more, and needs the localization of faults at short notice.In the time detecting the turn-to-turn short circuit of armature coil, conventionally adopt direct current bridge to detect.Need piecemeal detection, and direct current bridge adopts dry cell to do power supply.Whether the electric weight of dry cell is sufficient has a great impact the judgement of trouble spot, and this detection needs multi agent cooperation, and human factor is many, and the judgement of trouble spot is also had to impact.The turn-to-turn that detects armature coil opens circuit, and adopts multimeter, and the dry cell of human factor and use all can affect judgement.Turn-to-turn insulation, the insulation against ground of armature winding adopt measurement insulation resistance by megger.The contact resistance of commutator and armature winding, does not have device measuring.The short circuit of armature winding and the measurement of opening circuit adopt multitester measuring.Dry cell, the multimeter for measurement of direct current generator complete machine neutral point are measured.
Can draw a conclusion by above-mentioned statement, in prior art, not have an equipment can judge trouble spot and the fault degree of armature comprehensively, and existing detection method, not only many people's operations, are also used multiple instrument, instrument and equipment.
Utility model content
The utility model is in prior art, to detect the many and low problem of detection failure type accuracy that causes of device category that armature fault uses in order to solve.A kind of armature of direct current motor failure detector is now provided.
Armature of direct current motor failure detector, it comprises housing, power switch, fuse, No. two fuses, A.C. contactor, starting switch, shutdown switch, pilot lamp, autotransformer, transformer, voltage table, school lamp, milivoltmeter, full bridge rectifier, multiple connection terminal;
A fuse, No. two fuses, A.C. contactor, autotransformer, transformer, full bridge rectifiers are all arranged on the inside of housing;
Voltage table and milivoltmeter are embedded in the top of the front surface of housing; The adjustable side of autotransformer be arranged on voltage table under, pilot lamp and school lamp be arranged on milivoltmeter under, power switch is fixed on housing, and starting switch and shutdown switch are all fixed on the front surface of housing, and multiple connection terminals are arranged on the bottom of the front surface of housing;
An output terminal of power switch connects one end of a fuse, and another output terminal of this power switch is connected with one end of No. two fuses;
The other end of a fuse connects one end of control coil of A.C. contactor and one end of a normally opened contact of A.C. contactor simultaneously; The other end of No. two fuses connects one end of the stationary contact of shutdown switch and another normally opened contact of A.C. contactor simultaneously; The moving contact of shutdown switch connects one end of auxiliary contact and the stationary contact of starting switch of A.C. contactor simultaneously, and the other end of described auxiliary contact and the moving contact of starting switch are connected the other end of the control coil of A.C. contactor simultaneously;
The other end of a normally opened contact of A.C. contactor connects one end of pilot lamp and one end of autotransformer winding simultaneously, and the other end of another normally opened contact of A.C. contactor connects the other end of pilot lamp and the other end of autotransformer winding simultaneously; One end of the former limit winding of the adjustable side connection transformer of autotransformer, the other end of described former limit winding connects the other end of autotransformer winding, and the two ends of the secondary winding of transformer connect respectively two measuring junctions of voltage table;
Two measuring junctions of described voltage table connect respectively two AC signal input ends of full bridge rectifier, and two AC signal input ends of described full bridge rectifier connect respectively one end and an AC signal output wiring terminal of school lamp, and the other end of school lamp connects another AC signal output wiring terminal; Two DC signal output ends of this full bridge rectifier connect respectively two direct current signal connection terminals;
The two ends of milivoltmeter connect respectively two millivolt voltage measurement terminals.
The no-load voltage ratio of described transformer is 1:1.
Described power switch is air switch.
Described power switch is fixed on right side wall or the rear wall of housing.
Armature of direct current motor failure detector described in the utility model, the utility model adopts power switch, fuse, A.C. contactor, starting switch, shutdown switch, pilot lamp, autotransformer, transformer, voltage table, school lamp, milivoltmeter and six detection terminals, by connecting, realize the detection to armature of direct current motor fault, the accuracy rate of this pick-up unit detection failure type is high, compares existing checkout equipment accuracy rate and has improved more than 40%.
Accompanying drawing explanation
Fig. 1 is the electrical connection diagram of armature of direct current motor failure detector;
Fig. 2 is the structural representation of armature of direct current motor failure detector.
Embodiment
Embodiment one: see figures.1.and.2 and illustrate present embodiment, armature of direct current motor failure detector described in present embodiment, it comprises housing 7, power switch HK, fuse FU1, No. two fuse FU2, A.C. contactor KM, starting switch SB2, shutdown switch SB1, pilot lamp DL, autotransformer TA, transformer T, voltage table V, school lamp L, milivoltmeter MV, full bridge rectifier BR, multiple connection terminal 1 to 6;
A fuse FU1, No. two fuse FU2, A.C. contactor KM, autotransformer TA, transformer T, full bridge rectifier BR are all arranged on the inside of housing 7;
Voltage table V and milivoltmeter MV are embedded in the top of the front surface of housing 7; The adjustable side of autotransformer TA be arranged on voltage table V under, pilot lamp DL and school lamp L be arranged on milivoltmeter MV under, power switch HK is fixed on housing 7, starting switch SB2 and shutdown switch SB1 are all fixed on the front surface of housing 7, and multiple connection terminals 1 to 6 are arranged on the bottom of the front surface of housing 7;
An output terminal of power switch HK connects one end of a fuse FU1, and another output terminal of this power switch HK is connected with one end of No. two fuse FU2;
The other end of a fuse FU1 connects one end of control coil of A.C. contactor KM and one end of a normally opened contact KM1 of A.C. contactor KM simultaneously; The other end of No. two fuse FU2 connects one end of the stationary contact of shutdown switch SB1 and another normally opened contact KM2 of A.C. contactor KM simultaneously; The moving contact of shutdown switch SB1 connects one end of auxiliary contact KM3 and the stationary contact of starting switch SB2 of A.C. contactor KM simultaneously, and the other end of described auxiliary contact KM3 and the moving contact of starting switch SB2 are connected the other end of the control coil of A.C. contactor KM simultaneously;
The other end of a normally opened contact KM1 of A.C. contactor KM connects one end of pilot lamp DL and one end of autotransformer TA winding simultaneously, and the other end of another normally opened contact KM2 of A.C. contactor KM connects the other end of pilot lamp DL and the other end of autotransformer TA winding simultaneously; One end of the former limit winding of the adjustable side connection transformer T of autotransformer TA, the other end of described former limit winding connects the other end of autotransformer TA winding, and the two ends of the secondary winding of transformer T connect respectively two measuring junctions of voltage table V;
Two measuring junctions of described voltage table V connect respectively two AC signal input ends of full bridge rectifier BR, and two AC signal input ends of described full bridge rectifier BR connect respectively one end and an AC signal output wiring terminal 2 of school lamp L, and the other end of school lamp L connects another AC signal output wiring terminal 1;
Two DC signal output ends of this full bridge rectifier connect respectively two direct current signal connection terminals 3,4;
The two ends of milivoltmeter connect respectively two millivolt voltage measurement terminals 5,6.
Embodiment two: present embodiment is that the armature of direct current motor failure detector described in embodiment one is described further, in present embodiment, the no-load voltage ratio of described transformer is 1:1.
Embodiment three: present embodiment is that the armature of direct current motor failure detector described in embodiment one is described further, in present embodiment, described power switch HK is air switch.
Embodiment four: present embodiment is that the armature of direct current motor failure detector described in embodiment one is described further, in present embodiment, described power switch HK is fixed on right side wall or the rear wall of housing 7.
Principle of work: power switch HK closure, the energising of armature of direct current motor failure detector, press starting switch SB2, A.C. contactor KM obtains electric closure, whole pick-up unit is in running order, in the time that needs are closed pick-up unit, press shutdown switch SB1, armature of direct current motor failure detector quits work.
Testing process:
Step 2, press start button SB2, pilot lamp DL indication is normal, and voltage table indication is normal, and milivoltmeter indication is normal;
Turn-to-turn insulation, turn-to-turn short circuit and the turn-to-turn of test item one, detection armature coil open circuit;
Detect the turn-to-turn insulation of armature coil:
Detection terminal and No. two detection terminals are contacted respectively to adjacent two winding wirings of armature coil, judge that school lamp is bright not work; If school lamp is bright, illustrate that the turn-to-turn insulation of armature coil is destroyed, if school lamp does not work, illustrate that insulation is intact;
Detect the turn-to-turn short circuit of armature coil:
Detection terminal and No. two detection terminals are contacted respectively to any two ends of armature coil, then judge that school lamp is bright not work; If school lamp is bright, illustrate that turn-to-turn short circuit appears in armature coil; School lamp does not work, and illustrates that Inter-turn Short Circuit Phenomenon does not appear in armature coil.
The turn-to-turn that detects armature coil opens circuit:
Take the armature coil of 8 winding wirings as example, the terminals of 8 coils are respectively A1, A2, A3, A4, B1, B2, B3 and B4, and wherein A1, A2, A3 and A4 are in front, and B1, B2, B3 and B4 are in the back; A1 and B1 are the two ends of same coil, and A2 and B2 are the two ends of same coil, and A3 and B3 are the two ends of same coil, and A4 and B4 are the two ends of same coil,
Detection terminal and No. two detection terminals are contacted respectively to two terminals of the single line circle of armature coil, for example, A1 and B1; Judging that school lamp is bright does not work, if school lamp is bright, illustrates that armature coil does not open circuit, bright if school lamp does not have, and illustrates that armature coil occurs that turn-to-turn opens circuit.
Short circuit between the turn-to-turn insulation of test item two, armature commutator, insulation against ground, sheet;
Detect the turn-to-turn insulation of armature commutator:
Detection terminal and No. two detection terminals are contacted respectively to adjacent two copper sheets of commutator, judge that school lamp is bright not work; If school lamp is bright, illustrate that the turn-to-turn insulation of armature coil is destroyed, if school lamp does not work, illustrate that insulation is intact;
Detect the insulation against ground of armature commutator:
By certain copper sheet of detection terminal contact armature commutator, by the pressure ring of No. two detection terminal contact armature commutators, judge that school lamp is bright not work, if school lamp is bright, the insulation against ground that armature commutator is described was lost efficacy, bright if school lamp does not have, and illustrated that the insulation against ground of armature commutator is intact.
Short circuit between the sheet of detection armature commutator:
Detection terminal and No. two detection terminals are contacted respectively to adjacent two copper sheets of commutator, then judge that school lamp is bright not work; If school lamp is bright, illustrate that short circuit between sheet appears in armature commutator; School lamp does not work, and illustrates that short circuit phenomenon does not appear in armature commutator.
Test item three, detect short circuit between the sheet of armature winding, open circuit, open a way and snap;
Step 2, adjusting auto-transformer, make voltage table show the experimental voltage of direct current generator;
If the reading of milivoltmeter shows a certain numerical value all the time, illustrate that armature winding does not occur short circuit between sheet, opens circuit and open a way phenomenon;
If the reading of milivoltmeter obviously increases, illustrate that armature winding has the phenomenon of snapping.That is to say armature winding and commutator not prison welding, need to again weld;
If it is very large that the reading of milivoltmeter becomes suddenly, illustrate that armature winding has open circuit and breaking phenomena;
If the reading of milivoltmeter is too small, short circuit between armature winding sheet is described.
The position of test item four, detection direct current generator rectification neutral point;
Step 2, adjusting autotransformer, make voltage table show the experimental voltage of direct current generator;
If the indicated value of the pointer of step 4 milivoltmeter does not change, illustrate that the rectification neutral point position of direct current generator is correct; If the indicated value of the pointer of milivoltmeter increases or reduces, the malposition of the rectification neutral point of direct current generator is described; By regulating commutator brush holder position, until the indicated value of milivoltmeter pointer do not change, illustrate that the position judgment of neutral point of direct current generator is correct.
Claims (4)
1. armature of direct current motor failure detector, it is characterized in that, it comprises housing (7), power switch (HK), a fuse (FU1), No. two fuses (FU2), A.C. contactor (KM), starting switch (SB2), shutdown switch (SB1), pilot lamp (DL), autotransformer (TA), transformer (T), voltage table (V), school lamp (L), milivoltmeter (MV), full bridge rectifier (BR) and multiple connection terminal (1-6);
A fuse (FU1), No. two fuses (FU2), A.C. contactor (KM), autotransformer (TA), transformer (T), full bridge rectifier (BR) are all arranged on the inside of housing (7);
Voltage table (V) and milivoltmeter (MV) are embedded in the top of the front surface of housing (7); The adjustable side of autotransformer (TA) be arranged on voltage table (V) under, pilot lamp (DL) and school lamp (L) be arranged on milivoltmeter (MV) under, power switch (HK) is fixed on housing (7), starting switch (SB2) and shutdown switch (SB1) are all fixed on the front surface of housing (7), and multiple connection terminals (1-6) are successively set on the bottom of the front surface of housing (7);
An output terminal of power switch (HK) connects one end of a fuse (FU1), and another output terminal of this power switch (HK) is connected with one end of No. two fuses (FU2);
The other end of a fuse (FU1) connects one end of control coil of A.C. contactor (KM) and one end of a normally opened contact (KM1) of A.C. contactor (KM) simultaneously; The other end of No. two fuses (FU2) connects one end of the stationary contact of shutdown switch (SB1) and another normally opened contact (KM2) of A.C. contactor (KM) simultaneously; The moving contact of shutdown switch (SB1) connects one end of auxiliary contact (KM3) and the stationary contact of starting switch (SB2) of A.C. contactor (KM) simultaneously, and the other end of described auxiliary contact (KM3) and the moving contact of starting switch (SB2) are connected the other end of the control coil of A.C. contactor (KM) simultaneously;
The other end of a normally opened contact (KM1) of A.C. contactor (KM) connects one end of pilot lamp (DL) and one end of autotransformer (TA) winding simultaneously, and the other end of another normally opened contact (KM2) of A.C. contactor (KM) connects the other end of pilot lamp (DL) and the other end of autotransformer (TA) winding simultaneously; One end of the former limit winding of the adjustable side connection transformer (T) of autotransformer (TA), the other end of described former limit winding connects the other end of autotransformer (TA) winding, and the two ends of the secondary winding of transformer (T) connect respectively two measuring junctions of voltage table (V);
Two measuring junctions of described voltage table (V) connect respectively two AC signal input ends of full bridge rectifier (BR), and two AC signal input ends of described full bridge rectifier (BR) connect respectively one end and an AC signal output wiring terminal (2) of school lamp (L), and the other end of school lamp (L) connects another AC signal output wiring terminal (1);
Two DC signal output ends of this full bridge rectifier connect respectively two direct current signal connection terminals (3,4);
The two ends of milivoltmeter connect respectively two millivolt voltage measurement terminals (5,6).
2. armature of direct current motor failure detector according to claim 1, is characterized in that, the no-load voltage ratio of described transformer is 1:1.
3. armature of direct current motor failure detector according to claim 1, is characterized in that, described power switch (HK) is air switch.
4. armature of direct current motor failure detector according to claim 1, is characterized in that, described power switch (HK) is fixed on right side wall or the rear wall of housing (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420009319.6U CN203630312U (en) | 2014-01-08 | 2014-01-08 | Direct current motor armature fault detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420009319.6U CN203630312U (en) | 2014-01-08 | 2014-01-08 | Direct current motor armature fault detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203630312U true CN203630312U (en) | 2014-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420009319.6U Withdrawn - After Issue CN203630312U (en) | 2014-01-08 | 2014-01-08 | Direct current motor armature fault detection device |
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| Country | Link |
|---|---|
| CN (1) | CN203630312U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698703A (en) * | 2014-01-08 | 2014-04-02 | 中煤能源黑龙江煤化工有限公司 | Detector for armature fault of direct current motor |
| CN104865485A (en) * | 2015-04-24 | 2015-08-26 | 句容华源电器设备有限公司 | Isolation switch conductive loop contact failure fault detection method |
| CN110401309A (en) * | 2019-07-17 | 2019-11-01 | 华西能源工程有限公司 | A method of analysis DC motor control system failure cause |
-
2014
- 2014-01-08 CN CN201420009319.6U patent/CN203630312U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698703A (en) * | 2014-01-08 | 2014-04-02 | 中煤能源黑龙江煤化工有限公司 | Detector for armature fault of direct current motor |
| CN103698703B (en) * | 2014-01-08 | 2016-03-23 | 中煤能源黑龙江煤化工有限公司 | Detector for armature fault of direct current motor |
| CN104865485A (en) * | 2015-04-24 | 2015-08-26 | 句容华源电器设备有限公司 | Isolation switch conductive loop contact failure fault detection method |
| CN110401309A (en) * | 2019-07-17 | 2019-11-01 | 华西能源工程有限公司 | A method of analysis DC motor control system failure cause |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140604 Effective date of abandoning: 20160323 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |