JP5855596B2 - Electric motor and its transportation method - Google Patents

Description

The present invention relates to an electric motor and a transportation method thereof.

  When the electric motor is manufactured at the factory and then transported to the installation site, it is necessary to temporarily fix the rotating shaft so that the rotating shaft does not rotate or vibrate during transportation (see Patent Document 1). For this purpose, there is known a method of fixing the rotating shaft by pressing the rotating shaft in the axial direction from its end face using a stopper.

Japanese Utility Model Publication No. 63-182667

  A transport protection device such as a clasp used for transporting the electric motor is not required after the motor is installed, and is often discarded. Therefore, it is desired to reduce waste by minimizing the material to be discarded.

  The present invention has been made in view of such circumstances, and an object thereof is to realize a transportation protection device necessary for transportation protection of an electric motor with as little material as possible to save resources and reduce costs. is there.

In order to achieve the above object, an electric motor according to the present invention includes a horizontally extending rotary shaft having recesses formed in two symmetrical positions with respect to a side axis, and a bearing that rotatably supports the rotary shaft. And a bracket supporting the bearing, an outer oil drain attached to the bracket and through which the rotating shaft passes, and two electric motor transport protection devices detachably attached to the outer oil drain. a motor, each of the two motor transport protection device includes a mounting member threaded rod through holes are formed removably attached to the outer oil cut, a threaded rod extending through the threaded rod through holes The threaded rod is passed through the threaded rod through hole and the tip of the threaded rod is pressed against the recess of the rotating shaft to prevent the rotation of the rotating shaft and the screw against the mounting member. Possess a temporarily fixable threaded rod fixing member, the a tip of the threaded rod of the two motor transport protection device is arranged to be pressed against the respective recesses of the two It is characterized by that.

In addition, the motor transport method according to the present invention includes a horizontally extending rotary shaft in which depressions are formed on two side surfaces symmetrical to each other with respect to an axis, a bearing that rotatably supports the rotary shaft, and the bearing a bracket for supporting the, outer oil cutting said rotating shaft mounted on the bracket passes, a motor transport method with a two attachment members threaded rod through holes are formed in each , 2 and a mounting member attaching step of attaching to the two symmetrical to each other across the axial center of the outer oil cut, after the mounting member mounting step, each of the threaded rod through holes of the two attachment members two said state to prevent rotation of said rotary shaft by which to penetrate the pieces of threaded rod pressed against each indentation the tip of the two threaded shafts of said two of said rotary shaft A fixing step for fixing the threaded rod to the two attachment members, after the fixing step, a transportation step for transporting the motor, and installation steps of placing said electric motor after said transporting step, after the installation step And a release step of releasing the two screw rods from being pressed against the two recesses of the rotating shaft.

  According to this invention, it is possible to realize a transportation protection device necessary for transportation protection of an electric motor with a small amount of material, thereby saving resources and reducing costs.

It is a principal part front view of one Embodiment of the electric motor which concerns on this invention. It is an II direction arrow side view of FIG. It is a side view which takes out and shows only one of the attachment members of FIG.

  Hereinafter, an embodiment of an electric motor according to the present invention will be described with reference to the drawings. FIG. 1 is a front view of an essential part of an embodiment of an electric motor according to the present invention. FIG. 2 is a side view taken in the direction of the arrow II in FIG. FIG. 3 is a side view showing only one of the attachment members of FIG.

  The electric motor includes a rotating shaft 11 extending in the horizontal direction and a bearing 12 that rotatably supports the rotating shaft 11. Although the electric motor has two bearings 12, only the load-side bearing 12 is shown in FIG. The bearing 12 is supported by a bracket 13, and the bracket 13 is attached to an end portion of the casing 14. An outer oil drain 15 is attached to the outer end of the bracket 13. There is an opening in the center of the outer oil drain 15, and the rotary shaft 11 extends through the opening.

  A stator (not shown) is fixed inside the casing 14, and a rotor (not shown) is fixed to the rotary shaft 11, and the stator is disposed so as to surround the outer side in the radial direction of the rotor.

  A plurality of mounting bolt receiving screw holes 16 are formed at the axial end of the bracket 13, and a plurality of mounting bolt holes 17 are formed in the outer oil drain 15. The outer oil drain 15 is fixed to the bracket 13 by screwing the mounting bolt 18 into the mounting bolt receiving screw hole 16 of the bracket 13 through the mounting bolt hole 17 of the outer oil drain 15.

  An electric motor transport protection device 21 is detachably attached to the outer oil drain 15. In the illustrated example, two electric motor transport protection devices 21 are attached to opposite positions with the axis therebetween. Each electric motor transport protection device 21 includes an attachment member 22, a screw rod 23 attached to the attachment member 22, and two nuts (screw rod fixing members) 24.

  The attachment member 22 is formed by bending a substantially rectangular flat plate at a right angle along a fold line parallel to one side thereof to form a rectangular first plane portion 25 and a rectangular second plane portion 26. One screw rod through hole 27 is formed in the first plane portion 25. In the second plane portion 26, two grooves (slots) 28 extending toward the opposite side of the broken line and opened at the side are arranged in parallel to each other.

  The attachment member 22 is attached to the outer end portion of the outer oil drain 15. At this time, it arrange | positions so that an outer surface may be pressed on the outer side edge part of the outer oil drain 15 with respect to the broken line of the attachment member 22 of the 2nd plane part 26, and the 1st plane part 25 is on the side far from the rotating shaft 11. The orientation is such that it is located. Thereby, the 1st plane part 25 is in the position which opposes the part which protruded from the outer side oil drain 15 of the rotating shaft 11. FIG.

  The two mounting bolts 18 are inserted into the mounting bolt receiving screw holes 16 of the bracket 13 through the grooves 28 of the second flat portion 26 and the mounting bolt holes 17 of the outer oil drain 15 and screwed. Thereby, the attachment member 22 is fixed to the outer oil drain 15 and the bracket 13.

  Before the attachment member 22 is attached, the outer oil drain 15 is attached to the bracket 13 by the attachment bolt 18. When attaching the attachment member 22, the attachment bolt 18 is loosened, the attachment member 22 is slid inward from the radially outer side of the rotating shaft, and each attachment bolt 18 is sandwiched between the grooves 28 of the attachment member 22. The attachment member 22 can be attached.

  After the electric motor is installed, the attachment member 22 is removed. At this time, the mounting bolt 18 is loosened, the mounting member 22 is slid toward the outside in the radial direction of the rotating shaft, and after the mounting member 22 is removed, the mounting bolt 18 is retightened to re-tighten the bracket 13 and the outer oil drain 15. What is necessary is just to make sure the coupling | bonding of again.

  The screw rod 23 is inserted into the screw rod through hole 27. The screw rod 23 is formed with a male screw, and two nuts 24 are screwed into the male screw. The screw rod 23 is fixed to the attachment member 22 by sandwiching two nuts 24 from both sides of the attachment member 22 in a state where the tip of the screw rod 23 is pressed against the side surface of the rotating shaft 11. A recess 30 is formed on the side surface of the rotary shaft 11, and the tip of the screw rod 23 enters the recess 30, thereby preventing the rotation of the rotary shaft 11.

  When removing the screw rod 23 after installing the electric motor, the nut 24 may be loosened and the screw rod 23 removed.

  Note that after the electric motor is installed, the attachment member 22 does not necessarily have to be removed. Further, if the screw rod 23 is not in a position in contact with the rotating shaft 11, the screw rod 23 may not be removed.

  According to this embodiment, it is possible to realize a transportation protection device necessary for transportation protection of an electric motor with a small amount of material, thereby saving resources and reducing costs. Moreover, it is easy to attach and detach the transport protection device.

  Moreover, since the attachment member 22 is attached using the attachment bolt 18 for joining the bracket 13 and the outer oil drain 15, an extra bolt for attaching the attachment member 22 is not required, and resources are saved.

[Other Embodiments]
Although the embodiment of the present invention has been described, this embodiment is presented as an example and is not intended to limit the scope of the invention. This embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

  For example, in the above-described embodiment, an example in which two electric motor transport protection devices 21 are attached to one electric motor has been described. However, the number of the motor transport protection devices 21 may be one or three or more.

  Moreover, in the said embodiment, although the attachment member 22 shall be attached to the outer side edge part of the outer side oil drain 15, the attachment member 22 can also be attached to the side surface of the bracket 13, for example.

11 Rotating shaft 12 Bearing 13 Bracket 14 Casing 15 Outer oil drain 16 Mounting bolt receiving screw hole 17 Mounting bolt hole 18 Mounting bolt 21 Motor transport protection device 22 Mounting member 23 Screw rod 24 Nut (screw rod fixing member)
25 1st plane part 26 2nd plane part 27 Screw rod through hole 28 Groove (slot)
30 depressions

Claims (5)

A horizontally extending rotating shaft formed with indentations at two symmetrical positions with respect to the side axis;
A bearing that rotatably supports the rotating shaft;
A bracket for supporting the bearing;
An outer oil drainer attached to the bracket and through which the rotary shaft passes;
Two motor transport protection devices detachably attached to the outer oil drain;
An electric motor with a,
Each of the two electric motor transport protection devices is
An attachment member detachably attached to the outer oil drainer and formed with a screw rod through hole;
A threaded rod penetrating the threaded rod through hole;
The threaded rod is passed through the threaded rod through hole and the tip of the threaded rod is pressed against the recess of the rotating shaft to temporarily prevent the rotating shaft from rotating with respect to the mounting member. A screw rod fixing member that can be fixed
I have a,
Motor tip of the threaded rod of the two motor transport protection device, characterized in that it is arranged to be pressed against the respective recesses of the two. Each of the threaded rod fixing members includes two nuts that are screwed to the threaded rod across the mounting member in a state where the threaded rod penetrates the threaded rod through hole. The electric motor according to claim 1. The electric motor according to claim 1, wherein each of the attachment members can be attached to an outer end portion of the outer oil drainer. A mounting bolt hole through which a plurality of mounting bolts pass is formed in the outer oil drain,
A mounting bolt receiving screw hole into which the plurality of mounting bolts are screwed to the bracket is formed,
Each of the mounting members has a mounting bolt groove through which the plurality of mounting bolts pass,
By screwing the plurality of mounting bolts with the mounting bolt receiving screw holes through the mounting bolt grooves of the mounting member and the mounting bolt holes of the outer oil drain, the mounting member and the outer oil drain are connected to the bracket. Is configured to be fixable to,
The electric motor according to claim 3. A rotating shaft extending horizontally formed recesses symmetrically two sides to each other across the axial center, and a bearing for rotatably supporting the front Symbol rotary shaft, and a bracket for supporting the front SL bearing, pre Symbol bracket An outer oil drainer through which the rotating shaft is attached , and a method of transporting an electric motor comprising:
An attachment member attaching step for attaching two attachment members each having a threaded rod through hole to two symmetrical positions across the axis of the outer oil drain;
After the attachment member attaching step, two screw rods are passed through the screw rod through holes of the two attachment members, and the tip ends of the two screw rods are placed at the two positions of the rotary shaft. A fixing step of fixing the two screw rods to the two attachment members in a state in which the rotation of the rotary shaft is prevented by pressing against each of the recesses;
A transporting step for transporting the electric motor after the fixing step;
An installation step of installing the electric motor after the transporting step;
A release step of releasing the two screw rods from being pressed against the two recesses of the rotary shaft after the installation step;
A method for transporting an electric motor, comprising :

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