JPH0538838U - Transformer - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce the number of transformer parts and simplify the structure. [Structure] A mounting hole 1a is provided by penetrating a side wall of a case 1 accommodating a transformer main body 2. End 8 of lifting metal fitting 8
A is fitted into the mounting hole 1a, and the lifting metal fitting 8 is welded to the case 1. The lifting metal fitting 8 is provided with a screw hole 8c that opens into the case. The contents fixing bracket 6 fixed to the transformer main body 2 is opposed to the lifting fitting 8, and the bolt 7 penetrating the contents fixing bracket 6 is screwed into the screw hole 8c to fix the contents fixing bracket 6 to the case 1. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a transformer whose main body is housed in a case.

[0002]

[Prior Art]

 For transformers that house the transformer body in the case, the transformer body is fixed to the case with a content fixing bracket to prevent the transformer body from moving due to vibration during transportation. In order to facilitate the transport work of the transformer, a lifting metal fitting is attached to the upper part of the case, and the transformer can be easily lifted by hooking the hanging tool of the crane on the lifting metal fitting. ing.

FIG. 2 shows a conventional transformer of this type. In FIG. 2, 1 is a case and 2 is a transformer main body housed in the case 1. As shown in FIG. 2 (B), the nut 3 is welded to the upper part of the case 2 and is fixed to the upper yoke fastening fitting 4 of the transformer main body 2 by the bolt 5, so that the L-shaped content fixing fitting 6 is fixed. The upper end is opposed to the nut 3. A bolt 7 penetrating the upper end of the contents fixing bracket 6 is screwed into the nut 3, and the contents fixing bracket 6 is fastened to the case by the bolt 7. A lifting metal fitting 8 ′ is welded to the outer surface of the upper part of the case 1.

[0004]

[Problems to be solved by the device]

 In the conventional transformer, since the nut 3 for fixing the content fixing metal fitting 6 and the lifting metal fitting 8'are provided separately, not only the number of parts is increased, but also each welding needs to be performed separately. Therefore, there was a problem that the number of assembly steps increased and the cost increased.

An object of the present invention is to provide a transformer that solves the above problems by making the lifting metal fitting also serve as a means for fixing the content fixing metal fitting.

[0006]

[Means for Solving the Problems]

 The present invention relates to a transformer in which a lifting metal fitting is welded to a side wall of a case accommodating a transformer body. In the present invention, the end of the lifting metal fitting is attached to a mounting hole formed through the side wall of the case. The lifting metal fitting is welded to the case with the parts fitted together. The lifting metal fittings are screwed to the content fixing metal fittings fixed to the transformer body.

[0007]

[Action]

 As described above, if the lifting metal fitting also serves as a means for screwing the content fixing metal fitting, the number of parts can be reduced. Further, since the lifting metal fitting and the screw fixing means for the content fixing metal fitting can be attached to the case by performing the welding work only once, it is possible to reduce the man-hours for assembling the transformer and to reduce the cost.

[0008]

【Example】

 1A and 1B show an embodiment of the present invention. In FIG. 1 (A), 1 is a case, 2 is a transformer main body housed in the case 1, and lifting metal fittings 8, 8 are attached at symmetrical positions above the side wall of the case 1. As shown in FIG. 1 (B), each of the lifting metal fittings 8 is formed in a cylindrical shape, and has a small diameter portion 8a at one end and a flange portion 8b at the other end. The small-diameter portion of the lifting metal fitting 8 is welded to the case 1 in a state of being fitted into a mounting hole 1a provided by penetrating the upper portion of the side wall of the case 1. A screw hole 8 c that opens into the case 1 is provided in the shaft core portion of the lifting metal fitting 8.

[0009] One side of the L-shaped content fixing bracket 6 is fixed to the upper yoke tightening fitting 4 for tightening the upper yoke part of the iron core of the transformer main body by the bolt 5, and the other side of the content fixing fitting 6 is a lifting fitting. It is made to oppose one end of 8. A bolt 7 penetrating the content fixing metal fitting 6 is screwed into a screw hole 8c of the lifting metal fitting 8, and the content fixing metal fitting 6 is fastened to the lifting metal fitting 8 by this bolt 7.

Insulating oil is injected into the case 1, and the upper part of the case is closed by a cover plate 10.

[0011]

[Effect of the device]

 As described above, according to the present invention, the lifting metal fitting also serves as a means for screwing the content fixing metal fitting, so that the number of parts can be reduced.

Further, according to the present invention, since it is only necessary to weld the lifting metal fittings, the number of assembling steps is higher than that of the conventional transformer in which the nuts for mounting the content fixing metal fittings are welded in addition to the lifting metal fittings. Can be reduced, and the cost can be reduced.

[Brief description of drawings]

FIG. 1A is a front view showing a partially cutaway embodiment of the present invention. (B) is a cross-sectional view showing a mounting structure of the lifting metal fitting used in the embodiment of the present invention.

FIG. 2A is a front view showing a conventional transformer with a part thereof cut away. (B) is a sectional view showing a mounting structure of a lifting metal fitting used in a conventional transformer.

[Explanation of symbols]

1 ... Case, 1a ... Mounting hole, 2 ... Transformer body, 4 ... Upper yoke tightening fitting, 5 ... Bolt, 6 ... Contents fixing fitting,
7 ... Bolt, 8 ... Lifting metal fitting, 8c ... Screw hole.

Claims (1)

[Scope of utility model registration request] 1. A transformer in which a transformer main body is housed in a case, and a lifting metal fitting is welded to a side wall of the case, wherein the lifting metal fitting has an end portion penetrating the side wall of the case. A transformer, which is welded to the case in a state of being fitted in a mounting hole, and a content fixing metal member fixed to the transformer body is screwed to the lifting metal member.