CN2101964U - Ac permanent magnetic generator - Google Patents

Abstract

The utility model belongs to one of the AC permanent magnetic synchronous generators. The utility model uses the shape, size and structure of the base, the casing, the end cover, the rotating shaft, the bearings and the stator iron core of the JYF60 AC permanent magnetic generator widely used on small four wheel tractors. The utility model is characterized in that the original cylindrical permanent magnetic rotor is changed into a star-shaped four-pole permanent magnetic rotor, and the stator core is filled with non magnetic material strips in segments. The nominal voltage is 12V, the power is 90W, and the performance is better than the quality index of high quality products in the JB/NQ145.1-87 industry standard.

Description

AC permanent magnetic generator

The utility model relates to a kind of AC permanent-magnet synchronous generator, mainly is used as the mains lighting supply of tractor with small four wheels.

The tractor with small four wheels AC permanent-magnetic generator, owing to being that engine by tractor drives its rotor rotation and generates electricity, so its output illumination alternating voltage directly is subjected to the control of the tractor speed of travel, cause tractor to meet situations such as turning, climbing, road be bad, when needing low speed driving, and illuminating lamp does not work, when running at high speed, because of generator output voltage too high, and the phenomenon of burning bulb, this brings difficulty for the night safe of tractor travels.Patent Office of the People's Republic of China on April 5th, 1989, with notification number CN2035545U, " a kind of AC permanent-magnetic generator " disclosed, its application number is 8821620.2 patent application, proposed to solve a kind of scheme of this difficult problem, it is characterized in that elongated rotor, stator three-phase coil winding increases centre tap, and has correspondingly increased voltage output switch by turns.Though this scheme is feasible, cost increases more, uses also inconvenient simultaneously.

The purpose of this utility model is in order to solve above-mentioned the problems of the prior art, output voltage values when having designed a kind of raising low-speed running, output voltage limit value when control runs up, correspondingly increase the technical scheme of generator power, improve through test, develop a kind of comparatively desirable used with tractor AC permanent-magnetic generator finally.

The utility model is achieved in that the overall dimension and the structure thereof of the casing, end cap, rotating shaft, bearing and the stator core that still adopt the widely used JYF60 generator of tractor with small four wheels, its improvements are: first, with former cylindrical permanent magnet rotor, change star four-pole permanent magnet body rotor into, its structure is seen accompanying drawing A-A cutaway view.Wherein 10 is the condom of rotor periphery.11 is magnet steel, totally four, forms four utmost points.12 is binding agent, and purposes is that magnet steel is bonded on the yoke sheet 13.14 are rotating shaft.The second, non magnetic material punching (in the accompanying drawing 1 6) is filled in stator core segmentation (see in the accompanying drawing 1 5).

The utlity model has following advantage:

1, profile is identical with current J YF60 type AC permanent-magnetic generator with installation dimension, can exchange by complete machine.But power improves 30W, has increased the brightness of illuminating lamp.

2, this type nominal voltage 12V, power 90W, can replace existing 12V, the 90W AC permanent-magnetic generator, not only can reduce the latter's production cost greatly, the volume that has also solved the latter is big, and rotating speed is low, cool off a difficult problem that does not match with the bulk anxiety with water tank, the supporting more convenience that provides of tractor with small four wheels is provided.

3, through model machine simulation low-speed tractor (2000 rev/mins) and high speed (4400 rev/mins) are tested, its output voltage excursion is 9.8V-15.1V, both reached designing requirement, the quality index that is better than JB/NQ145.1-87 industry standard high-class product again, solved the low speed lamp fully and do not worked, at a high speed a difficult problem of burning bulb.

In conjunction with the accompanying drawings structure of the present utility model is described as follows: Fig. 1 is the complete machine structure schematic diagram, and wherein 1 is front end housing, the 2nd, and bearing, the 3rd, oil seal cover, the 4th, casing, the 5th, stator piece, the 6th, non magnetic material stator piece, the 7th, threephase stator winding, the 8th, rubber ring, the 9th, rear end cap, the 10th, condom, the 11st, magnet steel, the 12nd, binding agent, the 13rd, yoke sheet, the 14th, rotating shaft, the 15th, bolt.A-A among Fig. 1 is the transverse sectional view of star four-pole permanent magnet body rotor, and its structure front is narrated.

Embodiment, enforcement of the present utility model, the partly existing narration of technology contents in front, now only the model machine example of improvements is described as follows: the making of star level Four permanent magnet rotor, be that yoke sheet 13 is fitted in the rotating shaft 14, use epoxy glue to make binding agent 12 then, four different in nature ferrite magnetic steels are bonded on the yoke sheet, use non magnetic material aluminium, adopt the aluminium deep-drawing technique to make the condom 10 of rotor periphery.About the non magnetic material punching 6 that the stator core segmentation is filled, used economic duricrust paper.

Claims (1)

1. A kind of AC permanent-magnetic generator is made of stator, rotor, casing, bearing, end cap, it is characterized in that: said stator, and non magnetic material stator piece is filled in its stator core segmentation; Said rotor is star four-pole permanent magnet body structure.

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