JPH0539153U - Rotor of salient pole type rotating electric machine - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate the assembly work and to allow readjustment to an appropriate pressing force easily when the insulator withers due to aging. A supporting portion (8c) having a pressing surface for pressing the side surface of the field coil (1) and supporting an end portion of the field coil (1)
A pair of coil brackets (8a, 8b) are provided so as to face each other, the facing surfaces of the coil racket are made parallel, and a hole for loosely fitting the stud bolt (9) is provided in the facing surface. ) Screw the two nuts (10a, 10b) to rotate the pair of coil brackets (8
It is designed so that the distance between a and 8b) can be adjusted.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a synchronous machine used for general industry, and more particularly to a rotor of a salient pole type rotating electric machine equipped with a coil bracket for preventing the field coil from popping out by centrifugal force.

[0002]

[Prior Art]

 FIG. 2 is a diagram showing a main part of a rotor of a conventional salient pole type rotating electric machine.

As shown in FIG. 2, the magnetic pole 2 around which the field coil 1 is wound has a structure integral with the yoke 3, and a magnetic field between the lower portion of the field coil 1 and the magnetic pole 2 is a magnetic field. A plurality of springs 4 for pushing up and supporting the coil 1 are provided, and the side surface of the field coil 1 is prevented from being deformed by the component force Q of the centrifugal force F acting on the field coil. Therefore, a plurality of coil brackets 5 are provided via the insulator 6. The coil bracket 5 has a structure in which it is fastened and fixed to the magnetic pole 2 with a bolt 7.

[0004]

[Problems to be solved by the device]

 However, in the above-described conventional structure, the required number of fixing holes must be provided in the magnetic pole 2 in order to install the spring 4 that is provided to prevent the field coil from falling, and the coil bracket 5 is provided in the magnetic pole 2. It is also necessary to provide screw holes for bolts that are tightened and fixed to. Therefore, the workability of processing was poor, and the assembly work was complicated due to the large number of parts.

In addition, when the insulator 6 between the field coil 1 and the coil bracket 5 withers due to deterioration over time, a gap is created between the field coil 1 and the coil bracket 5, and at that time, the gap is generated. If it is very small, it is possible to fix the field coil 1 and the coil bracket 5 by tightening the bolt 7, but there is a drawback that if the gap becomes large, it cannot be fixed only by tightening.

The present invention has been made in order to solve the above-mentioned drawbacks, and its purpose is to prevent the field coil from falling and facilitate the assembling work, and to provide an insulator between the field coil and the coil bracket. It is intended to provide a rotor of a salient pole type electric rotating machine, which can easily readjust to an appropriate pressing force when the pressing force drops due to aging and the like and the pressing force decreases.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention comprises a field coil wound around a magnetic pole of a rotor and a coil bracket arranged between adjacent field coils and pressing a side surface of the field coil. In a rotor of a salient-pole rotary electric machine, a pair of coil brackets having a pressing surface for pressing the side surface of the field coil and a supporting portion for supporting an end portion of the field coil are provided so as to face each other. The opposing surfaces are made parallel to each other, and holes are provided in the opposing surfaces for loosely fitting the stud bolts, and two nuts screwed into the stud bolts are turned so that the distance between the pair of coil brackets can be adjusted.

[0008]

[Action]

 By rotating the two nuts fitted to the stud bolts and adjusting the distance between the pair of coil brackets, an appropriate pressing force can be easily applied to the side surfaces of the adjacent field coils. Further, since the end of the field coil can be supported only by the coil bracket, the assembling work becomes easy.

[0009]

【Example】

 FIG. 1 shows an embodiment of the present invention.

As shown in FIG. 1A, the magnetic pole 2 has an integral structure with the yoke 3, and the field coil 1 is wound around the magnetic pole 2. The field coil 1 is provided so that the insulator 6 contacts the entire field coil 1, and a pair of coil brackets 8a, 8b is provided between the adjacent field coils 1 via the insulator 6. Is provided. Further, as shown in FIG. 1B, the lower portion of the field coil 1 is designed to prevent the coil from dropping by a support 8c protruding from each of the coil brackets 8a and 8b.

The pair of coil brackets 8a, 8b described above are provided with stupling holes 8d into which the tips of the stud bolts 9 interposed therebetween are loosely fitted, and the stud bolts 9 are loosely fitted in both stupid holes. One of the two nuts 10a and 10b is fastened to one of the coil brackets, and the other nut is turned to widen the gap between the other coil bracket and to fix it between adjacent field coils. . Further, the lower portion of the field coil 1 is supported by the support 8c protruding from the coil bracket to prevent the coil from falling.

In the above structure, by rotating the nuts 10a, 10b of the stud bolt 9 interposed between both of the pair of coil brackets, the pressing surfaces of the coil brackets 8a, 8b are respectively connected via the insulator 6. It is possible to press the magnetic coil 1 and reliably prevent the deformation of the field coil 1 due to the component force Q of the centrifugal force F. Further, the coil bracket support 8c can support the field coil without affecting the finished state of the field coil.

In addition, when the insulator 6 withers due to deterioration over time and a gap is created between the coil bracket and the field coil, turning the nuts 10a and 10b of the stud bolt 9 makes it possible to easily apply an appropriate pressing force. Can be readjusted. Although several coil brackets 8a and 8b are provided along the axial direction of the rotor, this number can be appropriately selected depending on the size of the field coil 1.

[0014]

[Effect of the device]

 According to the present invention, it is possible to shorten the assembly time without the need for a spring or other component that pushes up the field coil from below, and in addition, if a gap is created due to the withering of the insulator due to deterioration over time. However, it is possible to provide a rotor of a salient-pole type rotary electric machine that can be easily readjusted.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a main part of a rotor of a salient pole type rotating electric machine of the present invention.

FIG. 2 is a main part configuration diagram of a rotor of a conventional salient-pole type rotary electric machine.

[Explanation of symbols]

1 ... Field coil 2 ... Magnetic pole 3 ... Yoke
6 ... Insulator 8a, 8b ... Coil bracket 8c ... Support 9 ... Stud bolt 10a, 10b ... Nut

Claims (1)

[Scope of utility model registration request] 1. A salient-pole rotating electric machine having a field coil wound around a magnetic pole of a rotor and a coil bracket disposed between adjacent field coils and pressing a side surface of the field coil. In the child, a pair of coil brackets having a pressing surface for pressing the side surface of the field coil and having a support portion for supporting the end portion of the field coil are provided to face each other, and the facing surfaces of the coil bracket are made parallel to each other. A rotation of a salient pole type rotating electric machine characterized in that a hole for loosely fitting a stud bolt is provided in the facing surface, and two nuts screwed into the stud bolt are turned to adjust a gap between the pair of coil brackets. Child.