JP2000299955A - Transport protection equipment for rotating electric machines - Google Patents

Abstract

(57) [Problem] To provide a transport protection device for a rotating electric machine to which a holding member for fixing a main shaft of the rotating electric machine can be properly attached. A rotating electric machine body and a bearing bracket 1
The joint bracket portion 2 provided between them is used as a fixing portion of the stud 3, and the pressing member 7 of the main shaft 8 of the rotating electric machine is fixed by the stud 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transport protection device for a rotating electric machine for preventing damage caused by movement of a spindle during transportation.

[0002]

2. Description of the Related Art For example, a large rotating electric machine is manufactured at a factory and then transported to an installation place such as a plant. In this case, in order to prevent damage due to the movement of the spindle during transportation, the spindle is fixedly transported by the transport protection device.

FIG. 3 is a plan view showing an example of a conventional transport protection device for a rotating electric machine. The main shaft 8 of the rotating electric machine is supported by the bearing bracket 1 and the bearing bracket 1
Projecting from. The main shaft 8 is fixed by a holding member 7 of the transport protection device. For example, an angle is used as the pressing member 7. The holding member 7 has a pair of studs 3.
Is provided, and one end of the stud 3 is fastened to a holding member 7 with a nut 6. A mounting plate 9 is welded to the other end of the stud 3 in advance, and the mounting plate 9 is fixed by tightening a screw hole formed in the bearing bracket 1 with a bolt 10.

That is, the stud 3 and the bearing bracket 1 are fixed by tightening the mounting plate 9 with a bolt 10 that passes through a screw hole formed in the bearing bracket 1. Further, the main shaft 8 is passed through the hole formed in the holding member 7 by using the holding member 7, passes the stud 3, and is tightened and fixed with nuts 6 from both sides of the holding member 7.

[0005]

However, in the rotating electric machine configured as described above, when the size (size) of the bearing bracket 1 changes, the width (span) between the pair of studs 3 changes. Pressing members 7 having different lengths must be used.

In addition, since the bearing bracket 1 is often used as a standard purchase product from a bearing maker, a screw hole for fixing the mounting plate 9 needs to be additionally formed in the bearing bracket 1 in such a case. Further, when the vibration during transportation is large, the bolts 10 fastening the mounting plate 9 and the bearing bracket 1 may be loosened. Then, the fixing of the main shaft 8 becomes insufficient and the rotating electric machine may be injured.

SUMMARY OF THE INVENTION An object of the present invention is to provide a transport protection device for a rotating electric machine to which a holding member for fixing a main shaft of the rotating electric machine can be properly attached.

[0008]

According to a first aspect of the present invention, there is provided a transport protection device for a rotating electrical machine, comprising: a stud attached to a joint bracket provided between the rotating electrical machine main body and a bearing bracket; A holding member attached to the other end for fixing the main shaft during transportation of the rotating electric machine.

In the transport protection apparatus for a rotating electric machine according to the first aspect of the present invention, a joint bracket portion provided between the rotating electric machine main body and a bearing bracket is used as a stud fixing portion, and the stud presses a main shaft of the rotating electric machine. Fix the member.

According to a second aspect of the present invention, there is provided a transport protection device for a rotating electric machine, wherein the stud is
It is characterized by having screw portions at both ends or all.

In the transport protection device for a rotating electric machine according to the second aspect of the present invention, in addition to the function of the first aspect of the present invention, the stud is fastened and fixed to the joint bracket portion and the holding member with a screw portion.

According to a third aspect of the present invention, there is provided a transport protection device for a rotating electric machine according to the second aspect of the present invention, wherein the joint bracket portion has a screw hole for screwing a thread portion of the stud.

In the transport protection device for a rotating electric machine according to the third aspect of the present invention, in addition to the operation of the second aspect of the present invention, the connection between the joint bracket and the stud is performed by the screw hole formed in the joint bracket and the stud. This is done with the screw part.

According to a fourth aspect of the present invention, in the transport protection device for a rotating electric machine, in the second aspect of the present invention, the joint bracket portion includes a nut portion for screwing a thread portion of the stud. .

According to a fourth aspect of the present invention, in addition to the operation of the second aspect, the joint between the joint bracket and the stud is connected to a nut provided on the joint bracket and the stud. This is done with the screw part.

[0016]

Embodiments of the present invention will be described below. FIG. 1 is a plan view of a transport protection device for a rotating electric machine according to a first embodiment of the present invention. The first embodiment is different from the conventional example shown in FIG. 3 in that a joint bracket portion 2 provided between a rotating electrical machine main body and a bearing bracket 1 is used as a fixed portion of a stud 3, and the stud 3 rotates The holding member 7 of the main shaft 8 of the electric machine is fixed.

In FIG. 1, male threads are formed at both ends of the stud 3. Further, the joint bracket portion 2 as a fixing portion of the stud 3 is provided with a female screw hole 11.
The stud 3 is screwed into the screw hole 11 to join the stud 3 to the bracket portion 2.
Fixed to.

On the other hand, a holding member 7 is fixed to the other end of the stud 3 with a nut 6. That is, the holding member 7 is fixed to the main shaft 3 by screwing the female screw of the nut 6 into the male screw of the screw portion of the stud 3.

As described above, since the joint bracket portion 2 is used as the fixed portion of the stud 3, the span of the pair of studs 3 can be kept constant, and the same length is always maintained even if the size of the bearing bracket 1 is different. The holding member 7 can be used. In addition, since additional threading of the bearing bracket 1 is not required, even if the bearing bracket 1 is a standard purchase product from a bearing manufacturer, it can be used as it is. Further, the bolt 1 of the mounting plate 9 is different from the conventional one.
0 can prevent an accident such as loosening due to vibration during transportation.

Next, a second embodiment of the present invention will be described. FIG. 2 is a plan view of a transport protection device for a rotating electric machine according to a second embodiment of the present invention. This second embodiment is different from the first embodiment shown in FIG.
Are provided with screw portions, and a nut portion 5 is provided as a fixing portion of the stud 3 of the joint bracket portion 2.

In FIG. 2, a thread portion is provided on the entire stud 3, and a nut portion 5 is formed by welding a nut to the joint bracket portion 2 instead of machining the screw hole 11. As the nut, for example, a hexagonal nut is used.

Since all the studs 3 are provided with threaded portions, even if the axial length of the main shaft 8 changes, the studs 3 can be used simply by cutting the studs 3 to a predetermined length. Screw processing is not required. For example, it can be used only by cutting a commercially available product of all threaded rods to a predetermined length.

Since the nut portion 5 is formed by welding a nut instead of the screw hole 11 to the joint bracket portion 2, the transport protection device (stud 3, pressing member 7) is removed to actually operate the rotating electric machine. In this case, rainwater does not enter the rotating electric machine. That is, in the case of the screw hole 11 of FIG. 1 instead of the nut portion 5, it is necessary to close the screw hole 11 so that rainwater from the outside does not enter the rotating electric machine. In this case, since the joint bracket portion 2 does not penetrate, it is possible to prevent infiltration of rainwater as it is.

[0024]

As described above, according to the present invention, the holding member having the same length can be used regardless of the size of the bearing bracket by fixing the stud for transport protection to the joint bracket. Therefore, it is not necessary to add a screw hole for fixing the mounting plate to the standard purchase product of the bearing maker.

Further, by using a screw hole or a nut as the fixing portion of the stud to the joint bracket portion, the stud is not loosened by vibration, and the holding member of the main shaft can be properly fixed.

[Brief description of the drawings]

FIG. 1 is a plan view of a transport protection device for a rotating electric machine according to a first embodiment of the present invention.

FIG. 2 is a plan view of a transport protection device for a rotating electric machine according to a second embodiment of the present invention.

FIG. 3 is a plan view of a transport protection device for a rotating electric machine in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bearing bracket 2 Joint bracket part 3 Stud 5 Nut part 6 Nut 7 Holding member 8 Main shaft 9 Mounting plate 10 Bolt 11 Screw hole

Claims (4)

[Claims] 1. A stud attached to a joint bracket portion provided between a rotating electric machine main body and a bearing bracket, and a pressing member attached to the other end of the stud for fixing a main shaft during transportation of the rotating electric machine. A transport protection device for a rotating electric machine, comprising: 2. The transport protection device for a rotating electric machine according to claim 1, wherein the stud has a thread portion at both ends or all of the stud. 3. The transport protection device for a rotating electric machine according to claim 2, wherein the joint bracket portion has a screw hole for screwing a screw portion of the stud. 4. The transport protection device for a rotating electric machine according to claim 2, wherein the joint bracket portion includes a nut portion for screwing a thread portion of the stud.