JPS6111966Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a structure of a stator frame of a rotating electrical machine in which divided members are combined and integrated.

A conventional stator frame for a rotating electric machine will be described with reference to FIG.

The semi-annular frames 1 and 2 are combined to form an integral annular rotating electric machine stator frame. Joint plates 3, 4
are integrally welded to the side surfaces of the semi-annular frames 1 and 2, respectively. Fastening surfaces 5, 6 of joint plates 3, 4
is located on a plane containing the central axes of the semi-annular frames 1 and 2. Two dowel pins 7 and 8 are each welded to the fastening surface 6 of the joint plate 4 at a semicircular outer peripheral surface parallel to and perpendicular to the central axis of the semicircular frame 2. The joining plate 3 is provided with semicircular knock pin holes 9, 10 on its fastening surface 5, which engage with the exposed outer peripheral surfaces of the knock pins 7, 8, respectively. 8
(4 of them are not shown) fastening bolts 11
can be assembled with a nut (not shown) to tighten the semi-annular frames 1, 2 at the fastening surfaces 5, 6.

The rotary electric machine stator frame having the above structure is assembled as follows.

The semi-annular frame 2 is placed with its bottom surface placed on the horizontal upper surface of the assembly surface plate 12. The semi-annular frame 1, which is laterally separated from the semi-annular frame 2 and lifted by the crane 14 via the wire rope 13, is lifted by the crane 14 until the bottom surface almost touches the top surface of the assembly platen 12. The crane 14 lowers the semi-circular notch pin holes 9 and 8 into the notch pins 7 and 8.
Gradually bring the semi-annular frame 1 close to the semi-annular frame 2 to a position where the bolts 10 can be engaged, fit the fastening bolts 11 into bolt holes (not shown) in the joining plates 3 and 2, and connect the fastening bolts 11 and nuts (not shown). When tightened, the joining plates 3, 4 are drawn together, the knock pins 7, 8 are completely engaged with the semicircular knock pin holes 9, 10, the fastening surfaces 5, 6 are in contact, and the semicircular frames 1, 2 are closed. Together, they form an annular rotating electric machine stator frame.

In the conventional rotating electric machine stator frame having the above structure, there are knock pins 7, 8 and semicircular knock pin holes 9, 1.
It is difficult to align the
The work had drawbacks that required careful attention.

The object of this invention is to provide a stator frame for a rotating electric machine that is easy to assemble and eliminates the above-mentioned drawbacks.

The rotary electric machine stator frame according to this invention will be explained with reference to FIGS. 2 and 3. In FIG. 2, parts that are the same as those shown in FIG. 1 are given the same reference numerals, and will not be described again below, but will be replaced by the above description.

The joining plates 3a and 4a are the same as the joining plates 3 and 4, respectively, except that they lack the semicircular knock pin holes 9 and the knock pins 7 in FIG. Semi-annular frame 1
A contact plate 2 is provided on the upper end surface of the fastening portions a and 2a, respectively.
0 and 21 are fastened with four bolts 22.

The contact plates 20 and 21 are substantially square flat plates, and have the same width at least in the radial direction.

Furthermore, one side of the frame facing the fastening surface side is the fastening surface 5.
It is formed on a slope that intersects with a and 6a.

That is, when the semi-annular frames 1a and 2a are combined into an annular shape, the contact plates 20, 2 are formed as shown in FIG.
The slopes of No. 1 are in contact with each other, and their widths are also the same.

The rotary electric machine stator frame having the above structure according to this invention is assembled in the following manner.

With respect to the semi-annular frame 1a placed on the assembly surface plate 12, the semi-annular frame 2a is moved in the diametrical direction so that one part of the slope of the backing plate 21 comes into contact with one part of the slope of the backing plate 20. Shift it and place it on the assembly surface plate 12.
At this time, due to the action of the contact plates 20 and 21, the fastening surface 6a is separated from the fastening surface 5a. The hydraulic jack 23 is fastened in advance to the upper surface of the assembly surface plate 12, and the piston rod 24 is arranged such that the slope of the contact plate 21 is
The piston rod 24 moves in and out in the direction of movement along the slope 0, and the tip of the piston rod 24 can engage with the outer surface of the lower part of the joint plate 4a. The hydraulic jack 23 is operated, and the piston rod 24 guides the slope of the contact plate 21 to the slope of the contact plate 20, and the semi-annular frame 2a
is gradually pushed in a direction in which its central axis coincides with the central axis of the semi-annular frame 1a, the fastening surface 6a gradually approaches the fastening surface 5a, and eventually the knock pin 8 enters the semi-circular knock pin hole 10, and the Board 21
When the slope of the plate 20 coincides with the slope of the contact plate 20 in the width direction, the fastening surfaces 5a and 6a come into close contact with each other, and the knock pin 8 is completely accommodated in the semicircular knock pin hole 10.
In this state, attach the fastening bolt 11 (Fig. 1) to the joining plate 3.
a, 4a, and connect the joining plates 3a, 4a with the fastening bolts 11 and nuts (not shown).
Tighten to complete the assembly of the rotating electric machine stator frame.

In the above embodiment, as mentioned above, the contact plate 2
Since the positioning for assembling the semi-annular frames 1a and 2a can be easily and accurately performed by using the semi-annular frames 1a and 21, the semi-annular frames can be positioned when assembling and adjusting the semi-annular frames as in the conventional rotating electric machine stator frame. Assembling work becomes easier as the crane work does not require careful attention.

As explained above, the present invention is a stator which is formed into an annular shape by positioning the partial annular frame of the stator divided into a plurality of parts by means of knock pins fixed to one of the opposing fastening surfaces. When the knock pins are arranged perpendicularly to the central axis of the partial annular frame and the partial annular frames are combined into an annular shape on the shaft end surface of each partial annular frame, the opposing sides of the flat plate are in contact with each other. Since the backing plates are fixedly attached to each other and the one side of the backing plate is formed into a slope that intersects with the fastening surface of the frame,
It is no longer necessary to operate the crane with great care and make delicate position adjustments of the partial annular frame, and the slope of the plate can be used to easily and accurately adjust the position for fastening the partial annular frame and rotate it. This has the effect of being able to be fastened together as an electric machine stator frame.

[Brief explanation of the drawing]

FIG. 1 is a partial perspective view of a conventional stator frame of a rotating electrical machine, FIG. 2 is a partial perspective view of a stator frame of a rotating electrical machine according to this invention, and FIG. 3 is a plan view of the main part of FIG. 2. 1a, 2a...Semi-annular frame body, 3a, 4a...Joining plate, 5c, 6a...Fascinating surface, 8...Knock pin, 10...Semicircular knock pin hole, 11...Fascinating bolt, 20, 21... Plate, 25...Bolt hole.

Claims (1)

[Claims for Utility Model Registration] A partial annular frame of a stator divided into multiple pieces,
In an annular shape formed by positioning by a dowel pin fixed to one of the opposing fastening surfaces, the dowel pin is arranged perpendicularly to the central axis of the partial annular frame, and each part annular When the partial annular frame is assembled into an annular shape on the shaft end surface of the frame, a flat contact plate whose opposing sides abut each other is fixedly attached to the shaft end surface of the frame, and the above-mentioned side of this contact plate is attached to the fastening surface of the frame. A stator frame for a rotating electric machine, characterized in that it is formed in intersecting cross sections.