CN101908421A - Cam switch of instrument for testing insulation between plates of commutator - Google Patents
Cam switch of instrument for testing insulation between plates of commutator Download PDFInfo
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- CN101908421A CN101908421A CN2009101471468A CN200910147146A CN101908421A CN 101908421 A CN101908421 A CN 101908421A CN 2009101471468 A CN2009101471468 A CN 2009101471468A CN 200910147146 A CN200910147146 A CN 200910147146A CN 101908421 A CN101908421 A CN 101908421A
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- commutator
- switch
- instrument
- plates
- cam
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Abstract
The invention discloses a cam switch of an instrument for testing the insulation between plates of a commutator, which is characterized in that the cam switch is connected with a drive motor, and the on and off of a limit switch are controlled by a cam. The cam switch of the invention has the advantages of automatically controlling the on and off of the limit switch so as to realize the replacement of a commutator to be detected, solving the problem of complex operating procedures and low efficiency caused by controlling the motor by a hand switch, realizing the continuous detection of the commutator without stopping the operation of the motor, and achieving high detection efficiency.
Description
Technical field
The present invention relates to the tester of the commutator that uses on a kind of direct current machine and the electric tool, in the definite testing process of saying so, control the switching of limit switch automatically, with the cam switch of realizing that commutator to be detected is replaced.
Background technology
The performance test of DC motor commutator lamination insulation, generally the height with ohmmeter stops inspection, or tests with the coupon of band bulb.This method needs manual the operation, to operator's specification requirement than higher, the inefficiency of detection, and test generally also is difficult to reach specification requirement, this in addition method of operation 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 JB3133-82 " electric tool commutator technical conditions " " it is practical sinusoidal wave that the commutator lamination insulation should be able to be born waveform; frequency is 50 hertz; test 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, test 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 insulation 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 cam switch of instrument for testing insulation between plates of commutator, make instrument for testing insulation between plates of commutator in testing process, automatically the switching of control limit switch, to realize commutator replacement to be detected, avoid hand switch to come the problem of the inefficiency of starter motor.
The objective of the invention is to be achieved through the following technical solutions:
A kind of cam switch of instrument for testing insulation between plates of commutator is connected with drive motors, and limit switch opens and closes by cam control.
The invention has the beneficial effects as follows, automatically the switching of control limit switch is replaced to realize commutator to be detected, has solved operation sequence complexity, the inefficient problem of hand switch control motor, can not stop the continuous detecting that machine operation realizes commutator, the efficient height.
Description of drawings
With embodiment the present invention is described in further detail with reference to the accompanying drawings below.
Fig. 1 is the structure chart 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, cam switch of the present invention is applied to instrument for testing insulation between plates of commutator, described instrument for testing insulation between plates of commutator mainly comprises short tooling 1, control circuit 9 that is connected with short tooling 1 and commutator drive unit, 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 motors 15, and drive motors 15 drives the commutator of placing commutator 7 to be detected and settles platform to rotate, and described drive motors 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 relay JZ7-62, D: series-wound 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: voltmeter 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 test 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 test 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 breakdown 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 test 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 test voltage of output provides through isolating transformer B.
Claims (1)
1. the cam switch of an instrument for testing insulation between plates of commutator is connected with drive motors, it is characterized in that, limit switch opens and closes by cam control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101471468A CN101908421A (en) | 2009-06-04 | 2009-06-04 | Cam switch of instrument for testing insulation between plates of commutator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101471468A CN101908421A (en) | 2009-06-04 | 2009-06-04 | Cam switch of instrument for testing insulation between plates of commutator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101908421A true CN101908421A (en) | 2010-12-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101471468A Pending CN101908421A (en) | 2009-06-04 | 2009-06-04 | Cam switch of instrument for testing insulation between plates of commutator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101908421A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104820173A (en) * | 2015-04-23 | 2015-08-05 | 瑞安市博宇电器有限公司 | Fully automatic commutator insulation detector |
-
2009
- 2009-06-04 CN CN2009101471468A patent/CN101908421A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104820173A (en) * | 2015-04-23 | 2015-08-05 | 瑞安市博宇电器有限公司 | Fully automatic commutator insulation detector |
| CN104820173B (en) * | 2015-04-23 | 2017-12-19 | 瑞安市博宇电器有限公司 | Full automatic commutator Insulation monitoring machine |
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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 |