JP2575471B2 - Centering method of vertical rotating electric machine - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial application field) The present invention relates to a method for centering a vertical rotating electric machine or the like.

(Prior Art) In centering of an upper bearing bracket generally performed when assembling a vertical rotating electric machine, for example, a normal turbine generator, a stator frame is pressed by a push screw seat and a push screw attached to an arm bracket of the upper bearing bracket. It was going by.

A centering method of the turbine generator provided with the centering device will be described with reference to FIGS. 3 and 4. FIG.

In FIG. 3, the centering of the upper bearing bracket 1 is performed by pressing and moving the stator frame 5 using a push screw seat 10 provided on the arm portion of the upper bearing bracket 1 and a push screw 9 attached to this seat. I was going.

(Problems to be Solved by the Invention) The set screw 9 and the seat 10 need to be taken into consideration in advance when designing the generator, and also necessary to provide the set screw between the upper bearing bracket 1 and the stator frame 5. Even when the above space is provided and the protective cover 8 is designed, the upper protective cover has a push screw 9 and a seat.
It was necessary to consider such things as providing 10 holes. In addition, the distance between the bearings must be increased, and these are factors that adversely affect the performance of the generator.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described drawbacks, and it has been required to mount a centering part on the arm portion of the above-described bean ring bracket. It is an object of the present invention to provide a centering method capable of easily performing disassembly and centering of a vertical rotating electric machine.

[Configuration of the invention]

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention has a hole for hooking a head of an upper bearing bracket fixing bolt to a head, and a set screw for pressing a side surface of the bearing bracket;
After hooking the hook hole of the centering tool with the set screw that presses the stator side surface onto the head of the loosely tightened upper bearing bracket fixing bolt, use the upper bearing bracket side surface and the stator side surface as the centering tool. The centering of the vertical rotating electric machine is performed by adjusting the provided push screw and moving the bearing bracket or the stator frame.

(Operation) Since the present invention is configured as described above, there is no need to provide a seat for a push screw and a push screw on the arm portion of the upper bearing bracket, and the centering tool can be removed after the centering is completed, so that the vertical shaft can be removed. Centering can be easily performed at the time of assembling the rotating electric machine, and a centering space between the upper bearing bracket and the stator frame is not required.

Example An example of the present invention will be described below with reference to the drawings.

FIG. 1 is a configuration diagram around an upper bearing bracket mounting portion of a normal turbine generator with a centering tool according to the present invention mounted thereon, and FIG. 2 is a side view of FIG. When assembling the generator main machine, the stator frame 2
The upper bearing bracket 1 is placed on the upper part of the bracket and is slightly tightened by bolts 3 and spring washers. The centering tool 5 having a hook hole in the head of the bolt 3 and a pressing screw 6 for pressing the upper bearing bracket 1 and a pressing screw 7 for pressing the stator frame 2 is a bolt 3.
And is placed on the upper bearing bracket 1. Here, the push screw 6 and the push screw 7 are screwed until they come into contact with the outer peripheral surfaces of the upper bearing bracket 1 and the stator frame 2, respectively. In the centering operation, when it is necessary to move the upper bearing bracket 1, the set screw 6 of the centering tool 5 is used.
Is screwed in the required amount. Further, since the bolt 3 is screwed into the stator frame 2, when the push screw 6 is screwed in, the bolt 3 receives the reaction force transmitted to the centering tool 5 and the push screw 7 of the centering tool 5 also receives the reaction force. . For this reason, the upper bearing bracket 1 can move in the radial direction on the mounting surface on the stator frame 2 to perform centering. When the stator frame 1 needs to be moved, it can be moved in the same manner as described above by screwing the set screw 7. After the completion of the centering operation, the centering tool 5 can be easily removed by loosening the set screws 6 and 7 of the centering tool 5 and removing the hooking portion to the bolt 3.

As described above, the centering tool 5 can be easily centered by being attached to the generator body only at the time of centering, and can be easily removed even after the centering is completed. The space for the seat and the set screw, which had been installed by welding, etc., and the space required for centering work are not required, the generator body can be made compact, and the distance between bearings can be shortened to improve the performance of the generator. Leads to.

〔The invention's effect〕

As described above, according to the present invention, the centering can be performed by the centering tool that can be easily attached and detached, so that the space for installing the centering component between the upper bearing bracket and the stator frame and the centering work are required. Since no space is required and the distance between bearings can be reduced, a compact and high-performance vertical rotating electric machine can be provided.

[Brief description of the drawings]

FIG. 1 is a main part configuration diagram for explaining a centering method of a vertical rotating electric machine equipped with a centering tool according to one embodiment of the present invention, FIG. 2 is a side view of FIG. 1, and FIG. FIG. 4 is a side view of a vertical rotating electric machine provided with a centering device, and FIG. 4 is an enlarged view of a main part of FIG. 1 Upper bearing bracket 2 Stator frame 3 Bearing bracket fixing bolt 4 Spring washer 5 Centering tool 6,7 Push screw.

Claims (1)

(57) [Claims] 1. A centering, having a hole for hooking a bolt for fixing the bearing bracket and the stator frame to the head, and comprising a set screw for pressing the side surface of the bearing bracket and a set screw for pressing the side surface of the stator frame. Centering the vertical rotating electric machine, wherein the hook hole of the tool is hooked on the head of the bolt in a loosely tightened state, and the respective push screws provided on the centering tool are adjusted to perform centering. Method.