CN2821595Y - Mouse cage type motor rotor broken strip detector - Google Patents
Mouse cage type motor rotor broken strip detector Download PDFInfo
- Publication number
- CN2821595Y CN2821595Y CN 200520042726 CN200520042726U CN2821595Y CN 2821595 Y CN2821595 Y CN 2821595Y CN 200520042726 CN200520042726 CN 200520042726 CN 200520042726 U CN200520042726 U CN 200520042726U CN 2821595 Y CN2821595 Y CN 2821595Y
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- sensor
- rotor
- oscillograph
- coils
- motor
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- Expired - Fee Related
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Abstract
A mouse cage type motor rotor broken strip detector includes a sensor which is formed by winding the coils on the magnetic iron core, an indicator adopting the oscillograph, a rotor bracket equipped on the engine base, a motor equipped on the rotor bracket, a clamping head equipped on a motor rotary shaft. The sensor is equipped on the position which is the engine base and is near and vertical with the detecting rotor. Coils of said sensor are connected with an input terminal of the oscillograph. When the rotor rotates, cage strips cut magnetic lines of the magnetic iron core in the sensor, and induced electric current is generated. The magnetic fieldgenerated by the induced electric current acts on coils in the sensor, and an induced signal is generated on coils. The oscillograph is used to detect waveform exported by the sensor and the oscillograph judges whether there are broken strips or not according to the continuity of waveform pulse. The mouse cage type motor rotor broken strip detector has the advantages of direct view, accuracy and convenient operation.
Description
Technical field
The utility model relates to motor, particularly the detection method of asynchronous AC motor rotor and equipment.
Background technology
At present, make the cage rotor of asynchronous AC motor, be after stamping forming siliconized plate is stacked, rivets, be placed in the mould, with die casting machine aluminium die casting is advanced to form the cage bar in the slot for winding of siliconized plate or the hole, and, form the cage type winding at the cage circle that formation of the two ends of rotor and cage bar connect as one.Because at press casting procedure, the influence of factors such as the temperature of aluminium, pressure and runner size, the flow direction easily causes the local vacancy of the cage bar moulding fully in the winding hole, promptly disconnected bar phenomenon.In the structure of various rotors, that siliconized plate adopts trench structure because slot for winding is for opening wide shape, and die casting can see the cage bar outer that is in rotor in back well, can inspect out by outward appearance to have or not disconnected bar; And adopt pass structure because the winding hole is in the inside of rotor, die casting back cage bar well is hidden in the winding hole, can't detect by outward appearance and judge.Rotor broken bar can cause the motor rotation imbalance, and power descends, and causes and can't work when serious.Can only make the parameters such as output power, torque of back testing of electric motors at present at the motor complete machine, judge by rule of thumb, and can't detect the rotor monomer.
Summary of the invention
It is a kind of to rotor monomer method and the equipment thereof that bar detects that breaks that the utility model purpose is to provide, and uses with convenient.
Scheme of the present utility model is: squirrel cage motor rotor broken bar pick-up unit, comprise sensor, indicator, it is characterized in that: sensor adopts and constitutes at the magnetive cord coiling, indicator adopts oscillograph, be provided with rotor field spider on support, rotor field spider is provided with motor, and machine shaft is provided with chuck, sensor is located to be pressed close on the support and perpendicular to the position of rotor to be measured, the coil of sensor is connected with oscillographic input end.
The utility model has the advantages that: during rotor rotation, the magnetic line of force of magnetive cord in the cage bar cutting sensor wherein, produce induction current, the coil of the action of a magnetic field in sensor that this induction current produces, produce induced signal on the coil, because the rotation of rotor, every cage bar effect in turn, the signal that produces on the coil is transferred in the oscillograph, oscillograph demonstrates corresponding pulse waveform, by the continuity of observed pulse shape, can judge to have or not disconnected bar to have advantage intuitively accurate, easy to use.
Description of drawings
The utility model is described in further detail with embodiment with reference to the accompanying drawings below.
Fig. 1 is the structural scheme of mechanism of the utility model support part.
Fig. 2 is the utility model circuit connection diagram.
Mark among the figure: 1 motor, 2 rotor field spiders, 3 chucks, 4 rotors to be measured, 5 thimbles, 6 sensors, 7 supports, 8 oscillographs, 9 connecting lines.11 machine shafts wherein, 41 armature spindles, the cage bar of 42 rotors, the magnetive cord of 61 sensors, the coil of 62 sensors.
Embodiment
Referring to Fig. 1 and 2, the squirrel cage motor rotor broken bar pick-up unit of embodiment, comprise sensor 6, indicator, sensor 6 adopts at magnetive cord 61 coilings 62 and constitutes, and indicator adopts oscillograph 8, is provided with rotor field spider 2 on support 7, rotor field spider 2 is provided with motor 1, machine shaft 11 is provided with chuck 3, and sensor 6 is located to be pressed close on the support 7 and perpendicular to the position of rotor 4 to be measured, the coil 62 of sensor is connected with the input end of oscillograph 8.
During use, rotating shaft 41 1 ends of rotor 4 to be measured are clipped in the chuck 3, the other end is used thimble 5 jack-up that are located on the rotor field spider 2, be erected on the rotor field spider 2, sensor 6 can be regulated along the radial expansion of rotor 4 to be measured on support 7, regulate sensor 6 this moment, make it near rotor 4 to be measured, connect motor power, motor 1 drives rotor 4 uniform rotation to be measured.
The magnetic line of force of magnetive cord 61 in the cage bar 42 cutting sensors 6 in the rotor 4 to be measured, produce induction current, because cage bar 42 moves with respect to sensor 6, the magnetic field that its induction current produces reacts on the coil 62 in the sensor 6, makes on the coil 62 and produces induced signal.Because the rotation of rotor 4 to be measured, every cage bar 42 effect in turn produces at interval consecutive pulses signal uniformly on the coil 62, this signal is transferred in the oscillograph 8, oscillograph 8 demonstrates corresponding pulse waveform, by the continuity of observed pulse shape, can judge to have or not disconnected bar.If disconnected bar, the recurrent interval is even, continuous, waveform is consistent; If disconnected bar is arranged, then pulse waveform is inhomogeneous, interrupted at interval, by observed pulse shape, can judge to have or not disconnected bar.
Claims (1)
- Squirrel cage motor rotor broken bar pick-up unit, comprise sensor (6), indicator, it is characterized in that: sensor (6) adopts and constitutes at magnetive cord (61) coiling (62), indicator adopts oscillograph (8), on support (7), be provided with rotor field spider (2), rotor field spider (2) is provided with motor (1), machine shaft (11) is provided with chuck (3), sensor (6) is located to be pressed close on the support (7) and perpendicular to the position of rotor to be measured (4), the coil of sensor (62) is connected with the input end of oscillograph (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520042726 CN2821595Y (en) | 2005-06-22 | 2005-06-22 | Mouse cage type motor rotor broken strip detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520042726 CN2821595Y (en) | 2005-06-22 | 2005-06-22 | Mouse cage type motor rotor broken strip detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2821595Y true CN2821595Y (en) | 2006-09-27 |
Family
ID=37018149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520042726 Expired - Fee Related CN2821595Y (en) | 2005-06-22 | 2005-06-22 | Mouse cage type motor rotor broken strip detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2821595Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101363901B (en) * | 2008-09-23 | 2010-12-01 | 中国人民解放军国防科学技术大学 | Method for detecting early failure of generator by enhancing transformations by electrical current characteristic |
| CN103063419A (en) * | 2012-10-30 | 2013-04-24 | 西安交通大学 | Quality testing device for motorized spindle rotor |
| CN107705691A (en) * | 2017-08-08 | 2018-02-16 | 中国矿业大学 | A kind of structure and method of rotor bearing experimental bench and quick-replaceable experimental piece |
-
2005
- 2005-06-22 CN CN 200520042726 patent/CN2821595Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101363901B (en) * | 2008-09-23 | 2010-12-01 | 中国人民解放军国防科学技术大学 | Method for detecting early failure of generator by enhancing transformations by electrical current characteristic |
| CN103063419A (en) * | 2012-10-30 | 2013-04-24 | 西安交通大学 | Quality testing device for motorized spindle rotor |
| CN107705691A (en) * | 2017-08-08 | 2018-02-16 | 中国矿业大学 | A kind of structure and method of rotor bearing experimental bench and quick-replaceable experimental piece |
| CN107705691B (en) * | 2017-08-08 | 2020-06-30 | 中国矿业大学 | Rotor-bearing experiment table |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |