JPS5936121Y2 - DC machine field pole spacing device - Google Patents

Description

[Detailed description of the invention] This invention relates to a field pole spacing device that makes the pitch of each field pole equal when adjusting the air gap between the field poles and the armature for rectification adjustment of a DC converter. be.

A conventional device of this type is shown in the sectional front view of FIG.

1 is an armature core, 2 is a main pole core, 3 is a main pole coil, 4 is a commutator core, 5 is a flat wound commutator coil, and 6 is a yoke, and these main pole core 2 and commutator core 4 are installed.

7 is a mounting bolt for the commutating pole core 4; 8 is a pair of holding fittings attached to both ends of the tip side of the commuting pole core 4 with bolts 9;
It is made of non-magnetic material and supports the commutator coil/L-5 on the upper surfaces of both sides, and the end surfaces of both sides have a slight gap S on the side of the pole piece of the main pole iron 2 to make each field pole pitch equal. I have to.

A pair of holding fittings 10 are attached to both ends of the rear end of the commutator core 4 with bolts 9, and support the other side of the commutator coil 5.

11 is an adjustment liner.

In order to adjust the air gap of the commutating pole core 4 for rectification with the conventional device described above, the bolt 7 is loosened, the number of adjustment liners 110 is adjusted, and the mounting bolt 7 is tightened.

The pitch of the commutating pole iron core 4 is adjusted to a slight displacement of 1S between the main pole iron core 2 and the holding metal fitting 8, and the pitch is made to be approximately the same for each pole.

In the conventional device, installation at the tip of the commutating pole core 4 requires a considerable amount of space.

In addition, in order to make the holding bracket 8 have a slight gap of 1S with respect to the main pole iron core 2 during assembly, corrections had to be made for each piece, which was troublesome and expensive. .

This idea was made to eliminate the drawbacks of the conventional ones as mentioned above, and the coil is attached to the side of the commutating pole core, and the coil is attached by screwing or fitting to the end side of the stud bolt. Attach a space adjustment fitting that is movable in the axial direction of the stud bolt, and by moving this space adjustment fitting, the gap between the tip and the main pole iron core can be adjusted, and the lie of the field iron can be adjusted. It is an object of the present invention to provide a field pole spacing maintenance device for a DC machine that makes the difference in pitch between field poles very small even when adjusted, is easy to install, and is easy to adjust.

An embodiment of this invention will be described below with reference to the drawings.

FIG. 2 is a cross-sectional front view of the main part, and the commutating pole coil 15 is flat-wound and is tightened by stud bolts 12, 13 and a ring nut 14 screwed into the housing on both sides of the commuting pole core 4. It is fixed to pole iron core 4.

One end of a nut 16 is screwed onto the end of the stud 12.

As shown in the enlarged sectional view in FIG. 3, an adjustment screw 17 is screwed onto the other end of the nut 16, and this installation is accomplished by rotating the adjustment screw 17 and moving it in the axial direction. , the clearance S between the tip of the adjusting screw 17 and the pole side of the main pole iron core 2 is adjusted to a predetermined value, and the lock nut 1 is
8, it is finally fixed.

These mounting nuts 16, adjustment screws 17, and lock nuts 18 constitute a spacing adjustment fitting 19, all of which are made of non-magnetic material.

Incidentally, when the main pole core 2 and the commutating pole core 4 are assembled into the yoke 6, they are assembled so that each pole has the same pitch.

FIGS. 4 and 5 show space adjustment fittings in other embodiments of this invention.

In the figure, 20 is an adjustment liner placed on the ring nut 14, and 21 and 22 are vertically divided into two parts by adjustment metals attached to the end side of the stud 12 that protrudes from the end of the ring nut 14. A fitting hole 23 having an inner diameter slightly smaller than the outer diameter of the stud bolt 12 is provided, one adjustment metal 21 is provided with a hole 21a, and the other adjustment metal 22 is provided with a bolt hole 22a.

24 is a pair of tightening bolts that connect these adjustment pieces 21 and 22.

Next, lightly tighten the tightening bolt 24 and adjust the adjustment bolts 21 and 22.
By sliding the stud 12 in the axial direction of the stud 12, the gap tS between the tip of the adjustment bar 21, 220 and one side of the pole of the main pole iron core 2 is adjusted to a predetermined value.

Once the value of this gap S is determined, the tightening bolt 24 is firmly tightened and fixed.

These adjustment liner 20, adjustment metals 21, 22, and tightening bolts 24 constitute a spacing adjustment metal fitting 25.

In addition, in the embodiment shown in FIG. 4, fitting holes 23 are provided in the adjustment pieces 21 and 22, but in order to be firmly connected to the threads of the stud bolt 12, screw holes with a slightly smaller internal diameter of the threads are used. It is also possible to provide a fitting hole.

In this case, the adjustment liner 20 may be omitted.

As described above, according to this invention, the coil attached to the side surface of the commutating pole core is screwed or fitted to the end side of the stud bolt, and is spaced so that it can move in the axial direction of the stud bolt. By installing an adjustment fitting and moving this interval adjustment fitting, the gap between the tip and the main pole iron core can be adjusted. Even if the liner of the field iron is adjusted, the disparity in pitch between the field poles can be minimized. It is possible to provide a field pole spacing device for a DC machine that is small in size, easy to install, and easy to adjust.

[Brief explanation of drawings]

Fig. 1 is a front view showing a conventional field pole spacing device for a DC machine, Fig. 2 is a front view of a field pole spacing device according to an embodiment of this invention, and Fig. 3 is a front view showing a field pole spacing device according to an embodiment of the invention. FIG. 4 is a side view of a plow 1 adjusting device according to another embodiment of the invention, and FIG. 5 is a front view thereof. 2...Main pole iron core, 4...Commuting pole iron core, 1
2... Stud bolt, 14... Ring nut, 16... Mounting nut, 17...
Adjustment screw, 18...Lock nut, 19.25
...... Spacing adjustment fitting, 21, 22... Adjustment metal, 28... Fitting hole, 24...
Tightening bolts: The same reference numerals in the drawings indicate the same or equivalent parts.

Claims (1)

[Scope of Utility Model Registration Claim] The gap between the tip of the bolt and the pole side of the main pole core is set to a predetermined value by screwing or fitting the stud into the end of the bolt on the main pole core side and moving the stud bolt in the axial direction. A field pole spacing maintenance device for a DC machine, characterized in that it is equipped with a spacing adjustment fitting that adjusts the distance between the poles. The field pole spacing device for a DC machine as claimed in claim 1 of the registered utility model, characterized in that it consists of an adjustment screw screwed into the end side. Utility model registration claim 1, characterized in that the distal end side of the cedar bolt is sandwiched between the two sides by the fitting hole portion provided in the center of the split, and the tightening is performed by a combined adjustment metal. field pole spacing device for DC machines.