CN101907668A - Instrument for testing insulation between plates of commutator - Google Patents
Instrument for testing insulation between plates of commutator Download PDFInfo
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- CN101907668A CN101907668A CN200910147142XA CN200910147142A CN101907668A CN 101907668 A CN101907668 A CN 101907668A CN 200910147142X A CN200910147142X A CN 200910147142XA CN 200910147142 A CN200910147142 A CN 200910147142A CN 101907668 A CN101907668 A CN 101907668A
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- commutator
- control circuit
- trigger diode
- bidirectional
- motor
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Abstract
The invention discloses an instrument for testing the insulation between plates of a commutator, which mainly comprises a short-circuit pickup, a control circuit connected with the short-circuit pickup, and a drive unit of the commutator, wherein the short-circuit pickup comprises a shell consisting of a connecting sleeve, a screw neck and a brush holder, two electric brushes are arranged in the shell, the top of the electric brush is contacted with the commutator, and the tail end of the electric brush is contacted with the electrode of the control circuit by a spring; and the control circuit comprises a motor D, the motor is controlled by a bidirectional silicon controlled thyristor SCR and a bidirectional trigger diode 2CTS, and the bidirectional silicon controlled thyristor SCR and the bidirectional trigger diode 2CTS are connected in parallel. Meanwhile, the control circuit also comprises a capacitor C1, wherein the capacitor C1 is parallelly connected with the bidirectional trigger diode 2CTS and then connected with a slide rheostat in series. The instrument for testing the insulation between plates of the commutator has the advantages of overcoming the defects of low efficiency and big error existing in manual detection and rapidly and accurately detecting the insulation of the commutator.
Description
Technical field
The present invention relates to the testing tool of the commutator that uses on a kind of direct current generator and the electric tool, definite saying so detects the instrument that whether insulate between adjacent two of the commutator.
Background technology
The performance test of DC motor commutator insulation between plates, generally the height with ohmmeter stops inspection, or tests with the coupon of band bulb.This method needs manual the operation, to operator's technical requirement than higher, the inefficiency of detection, and test generally also is difficult to reach technical requirement, this in addition method of operating has Danger Electric shock risk.Jump the requirement that (about test method) " guarantees that be no less than 2 seconds conduction time between sheet " by the 1.8th of JB 3133-82 " electric tool commutator technical conditions " " it is practical sinusoidal wave that the commutator insulation between plates should be able to be born waveform; frequency is 50 hertz; trial voltage is 220 volts; the withstand voltage test that lasts 2 seconds does not puncture " and the 2.5th.The conduction time of test product, trial voltage and contact good degree all can reach requirement.Based on above-mentioned actual conditions, I have designed can be accurately and test the instrument of the insulating property between adjacent two of DC motor commutator fast.
Summary of the invention
The object of the present invention is to provide a kind of testing tool that can test insulating property between adjacent two of the DC motor commutator, solve ohmmeter test commonly used and with the inefficiency and the not high problem of accuracy of the coupon method of testing of being with bulb.
The objective of the invention is to be achieved through the following technical solutions:
A kind of instrument for testing insulation between plates of commutator, mainly comprise short tooling, control circuit that is connected with short tooling and commutator drive unit, described control circuit comprises motor D, motor is by bidirectional triode thyristor SCR and bidirectional trigger diode 2CTS control, described bidirectional triode thyristor SCR and bidirectional trigger diode 2CTS control are in parallel, also comprise a capacitor C in parallel 1 with bidirectional trigger diode 2CTS, connect with a slide rheostat W after capacitor C 1 and the bidirectional trigger diode 2CTS parallel connection, described short tooling comprises by adapter sleeve, screw socket, the housing that brush carrier is formed, two brushes are installed in the inside of housing, the top of brush contacts with commutator, the end of brush contacts with the electrode of control circuit by spring, and the distance between two brushes equates with the width of a commutator segment of commutator to be detected;
Described short tooling is connected with control crank, and described control crank is rack-mount by hinge;
Described drive unit comprises drive motor, and drive motor drives the commutator of placing commutator to be detected and settles platform to rotate, and described drive motor is connected with limit switch, and limit switch opens and closes by cam control.
Two brushes contact with adjacent two commutator segments on the commutator respectively, if on-insulated between two commutator segments, control circuit will be controlled commutator and shuts down so, reaches the purpose of test.
Beneficial effect of the present invention is, can avoid the defective that manual inspection efficient is low and error is big, reaches the effect of the insulativity that fast, accurately detects commutator.
Description of drawings
With embodiment the present invention is described in further detail with reference to the accompanying drawings below.
Fig. 1 is the structural drawing of instrument for testing insulation between plates of commutator;
Fig. 2 is the vertical view of Fig. 1 commutator and short tooling;
Fig. 3 is the control circuit fundamental diagram.
Embodiment
Shown in Fig. 1-2, a kind of instrument for testing insulation between plates of commutator of the present invention, mainly comprise short tooling 1, control circuit 9 that is connected with short tooling 1 and commutator drive unit, described control circuit comprises motor D, motor is by bidirectional triode thyristor SCR and bidirectional trigger diode 2CTS control, described bidirectional triode thyristor SCR and bidirectional trigger diode 2CTS control are in parallel, also comprise a capacitor C in parallel 1 with bidirectional trigger diode 2CTS, connect with a slide rheostat W after capacitor C 1 and the bidirectional trigger diode 2CTS parallel connection, described short tooling 1 comprises by adapter sleeve 2, screw socket 3, the housing 5 that brush carrier 4 is formed, two brushes 6 are installed in the inside of housing 5, the top of brush 6 contacts with commutator 7, the end of brush 6 contacts with the electrode 11 of control circuit 9 by spring 8, and the distance between two brushes 6 equates with the width of a commutator segment of commutator 7 to be detected;
Described short tooling 1 is connected with control crank 12, and described control crank 12 is installed on the support 13 by hinge;
Described drive unit comprises drive motor 15, and drive motor 15 drives the commutator of placing commutator 7 to be detected and settles platform to rotate, and described drive motor 15 is connected with limit switch 14, and limit switch 14 opens and closes by cam 16 controls.
Two brushes 6 contact with adjacent two commutator segments on the commutator 7 respectively, if on-insulated between two commutator segments, control circuit will be controlled commutator 7 and shuts down so, reaches the purpose of test.
Fig. 3 is the schematic diagram of control circuit.
Continuous service test: first power turn-on K switch, press J1～J3 again: auxiliary reclay JZ7-62, D: series motor HDZ-280, C1: electric capacity 400V/0.033 μ F, C2: electric capacity 160V/0.1 μ F, L: inductance 100mH, SCR: bidirectional triode thyristor 5A/400V, 2CTS: bidirectional trigger diode, W: potentiometer 470K, R: resistance 680 Ω, KW: limit switch, B: isolating transformer, input 220V, output 220V and 6.3V, K: turn switch, RD: fuse, A1～A5: button, XD1～XD4: signal lamp, V: voltage table SQ: short tooling, Z: test product.Press A1, J1 must electric adhesive, and its normally open contact is connected circuit separately respectively, makes motor D drive the test product running and trial voltage imposes between commutator segment.Every examination finishes a commutator, can not stop motor work, changes test product under rotating shaft is rotated continuously.
The intermitten operation test: the K that closes earlier, press A2 again, just very electric adhesive of J2, its normally open contact is connected circuit separately respectively, and motor D drive test product running and trial voltage are imposed between commutator segment.When motor D drives cam rows to limit switch KW disconnection after week, the J2 dead electricity is discharged, circuit quits work automatically, just finishes a test product test.
A4 is simulation flash test button for alert button: the A5 that disappears.In process of the test, if puncture between the sheet of test product, J3 immediately electric adhesive, simultaneously the normally open contact self-locking of J3 and normally closed interlock disconnect, and J1 or J2 dead electricity are discharged, the trial voltage of cut-out test product and quitting work.After the test product that punctures is got rid of, press A4, the J3 dead electricity discharges, and circuit returns to normal again, gets ready for testing again.
By the standard-required that is no less than 2s conduction time between commutator segment, this circuit adopts stepless speed regulation, needs only the size of regulator potentiometer W, can change the rotating speed of motor D.The setting of inductance L is for the protection thyristor, can strengthen the inhibition to radio frequency again.For the purpose of operator safety, the trial voltage of output provides through isolating transformer B.
Claims (1)
1. instrument for testing insulation between plates of commutator, mainly comprise short tooling, the control circuit that is connected with short tooling and commutator drive unit, described control circuit comprises motor D, motor is by bidirectional triode thyristor SCR and bidirectional trigger diode 2CTS control, described bidirectional triode thyristor SCR and bidirectional trigger diode 2CTS control are in parallel, it is characterized in that, also comprise a capacitor C in parallel 1, connect with a slide rheostat W after capacitor C 1 and the bidirectional trigger diode 2CTS parallel connection with bidirectional trigger diode 2CTS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910147142XA CN101907668A (en) | 2009-06-04 | 2009-06-04 | Instrument for testing insulation between plates of commutator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910147142XA CN101907668A (en) | 2009-06-04 | 2009-06-04 | Instrument for testing insulation between plates of commutator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101907668A true CN101907668A (en) | 2010-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910147142XA Pending CN101907668A (en) | 2009-06-04 | 2009-06-04 | Instrument for testing insulation between plates of commutator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101907668A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104898054A (en) * | 2014-03-04 | 2015-09-09 | 许元 | Comprehensive performance test device for DC motor rotor commutator and carbon brush |
| CN109444626A (en) * | 2018-10-26 | 2019-03-08 | 浙江丰源智能装备有限公司 | Short-circuit test system and its working method between a kind of motor commutation device piece |
| CN110554244A (en) * | 2019-09-20 | 2019-12-10 | 裕东（中山）机械工程有限公司 | Mobile online resistance detection system for electrostatic powder spraying |
-
2009
- 2009-06-04 CN CN200910147142XA patent/CN101907668A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104898054A (en) * | 2014-03-04 | 2015-09-09 | 许元 | Comprehensive performance test device for DC motor rotor commutator and carbon brush |
| CN109444626A (en) * | 2018-10-26 | 2019-03-08 | 浙江丰源智能装备有限公司 | Short-circuit test system and its working method between a kind of motor commutation device piece |
| CN109444626B (en) * | 2018-10-26 | 2024-04-26 | 浙江丰源智能装备有限公司 | Short circuit test system between motor phase changer sheets and working method thereof |
| CN110554244A (en) * | 2019-09-20 | 2019-12-10 | 裕东（中山）机械工程有限公司 | Mobile online resistance detection system for electrostatic powder spraying |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101208 |