JP2013194809A - Positioning mechanism of electric motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a positioning mechanism of an electric motor, configured to allow easy displacement of a large electric motor.SOLUTION: A positioning mechanism 10 moves an electric motor 7 to align a rotating shaft 7s with a rotated shaft. The electric motor 7 includes the rotating shaft 7s protruding from a front face 71 of a rectangular parallelepiped frame 7f constituting an outer shell. In the electric motor 7, both blades on the bottom of the frame 7f are placed on a pair of base members 8, 8 fixed to a floor surface and extending substantially in parallel in the same direction as the protruding direction of the rotating shaft 7s. The positioning mechanism 10 includes: a first adjusting bolt 1b for moving the frame 7f in the same direction as the protruding direction of the rotating shaft 7s with respect to the pair of base members 8, 8; and a second adjusting bolt 2b for moving the frame 7f in a direction substantially orthogonal to the protruding direction of the rotating shaft 7s with respect to the pair of base members 8, 8.

Description

  The present invention relates to an electric motor positioning mechanism. In particular, the present invention relates to a mechanism for positioning a rotary shaft of a large electric motor in order to connect with a fan shaft such as a large push fan.

  For example, a thermal power plant using pulverized coal as a fuel includes a mill (pulverized coal machine) that pulverizes coal to produce pulverized coal. And, in order to transfer the pulverized coal produced in the mill into the furnace of the boiler, and to send the combustion air into the furnace of the boiler, a large forced draft fan (FDF: Forced draft fan) is connected to the mill Is known (see, for example, Patent Document 1).

  Moreover, in order to rotate the propeller fan provided in such a large forced air blower, a large electric motor having a rotating shaft connected to the fan shaft of the propeller fan is used. For example, such a large electric motor is installed on a pair of channel-shaped base members that are fixed by anchor bolts driven into the floor surface and extend substantially in parallel (for example, see Patent Document 2).

JP 2008-157545 A JP2012-789A

  The large electric motor described above has a weight of about 1 ton, for example. Therefore, it is not easy to move the motor in order to connect the fan shaft of the pusher fan and the rotating shaft of the motor. Conventionally, a motor is moved by hitting the outer shell (frame) of an electric motor with a hammer via a buffer member, and the fan shaft of the pusher fan and the rotating shaft of the electric motor are aligned.

  However, the operation of moving the electric motor using a hammer requires labor, and there is a concern of damaging the electric motor. There has been a need for a positioning mechanism that can easily move a large electric motor in the front-rear direction (direction parallel to the direction in which the rotating shaft protrudes) and in the left-right direction (direction orthogonal to the direction in which the rotating shaft protrudes). The above can be said to be the subject of the present invention.

  The present invention has been made in view of such problems, and an object of the present invention is to provide an electric motor positioning mechanism that can easily move a large electric motor in the front-rear direction and the left-right direction.

  The inventor is supported by a base member on which the electric motor is placed, is in contact with the front and rear surfaces of the electric motor, and is supported by the first adjustment bolt that moves the electric motor in the front-rear direction and the front and rear surfaces of the electric motor, The second adjustment bolt that contacts the base member and moves the electric motor in the left-right direction constitutes a positioning mechanism, which makes it easier to move the electric motor. It came to invent the positioning mechanism of an electric motor.

  (1) An electric motor positioning mechanism according to the present invention has a rotation shaft protruding from the front surface of a frame constituting an outer shell, is fixed to a floor surface, and extends substantially parallel to the same direction as the rotation shaft protrudes. An electric motor positioning mechanism for moving an electric motor on which both wings at the bottom of the frame are mounted on a pair of channel-shaped base members to align the rotating shaft and the rotated shaft, and the pair of base members The first moving means for moving the frame in the same direction as the direction in which the rotating shaft protrudes, and the frame in a direction substantially perpendicular to the direction in which the rotating shaft protrudes with respect to the pair of base members And second moving means for moving.

  (2) The first moving means is a pair of pairs that are fixed to the pair of base members so as to be spaced apart from the front and rear surfaces of the frame and have first female screw holes penetrating toward the front and rear surfaces of the frame. The first fixing member, and a first adjustment bolt that is screwed into the first female screw hole and whose front end portion can abut against the front surface or the rear surface of the frame. A pair of second fixing members fixed to the front surface and the rear surface and having opposed second female screw holes and a pair of second fixing members screwed into the second female screw holes, and the tip portions abut against the opposing side surfaces of the pair of base members. It is preferable that the 2nd adjustment bolt which can be contacted is included.

  (3) The first fixing member includes a first angle member in which one piece is fixed to the upper surface of the base member and the first female screw hole is formed in the other piece, and the second fixing member includes one piece of the frame. A second angle member that is welded to the front and rear surfaces of the second and formed with the second female screw hole in the other piece may be included.

  (4) The second female screw hole may include a female screw formed at a central portion of a nut welded to the other piece of the second angle member.

  The electric motor positioning mechanism according to the present invention is supported by a base member on which the electric motor is mounted, abuts against the front and rear surfaces of the electric motor, and moves the electric motor in the front-rear direction, and the front and rear surfaces of the electric motor. Since the positioning mechanism is constituted by the second adjustment bolt that is supported by the base member and abuts against the base member and moves the electric motor in the left-right direction, the electric motor can be easily moved in the front-rear direction and the left-right direction.

It is a perspective view which shows the structure of the positioning mechanism of the electric motor by one Embodiment of this invention, and is the state figure which looked at the electric motor from the front side. It is a top view which shows the structure of the positioning mechanism of the electric motor by the said embodiment. It is a rear view which shows the structure of the positioning mechanism of the electric motor by the said embodiment. It is the perspective view which expanded the principal part of the positioning mechanism of the electric motor by the said embodiment.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
[Configuration of motor positioning mechanism]
Initially, the structure of the positioning mechanism of the electric motor by one Embodiment of this invention is demonstrated. FIG. 1 is a perspective view showing a configuration of a positioning mechanism for an electric motor according to an embodiment of the present invention, and is a state diagram when the electric motor is viewed from the front side.

  FIG. 2 is a plan view showing the configuration of the electric motor positioning mechanism according to the embodiment. FIG. 3 is a rear view showing the configuration of the positioning mechanism of the electric motor according to the embodiment. FIG. 4 is an enlarged perspective view of a main part of the positioning mechanism for the electric motor according to the embodiment.

(overall structure)
1 to 3, an electric motor 7 according to the present invention includes a rectangular parallelepiped frame 7f and a rotating shaft 7s. The frame 7f constitutes the outer shell of the electric motor 7. The rotation shaft 7s protrudes from the front surface 71 of the frame 7f. In the electric motor 7, both wings at the bottom of the frame 7f are placed on a pair of channel-shaped base members 8 and 8 fixed to the floor surface FL (see FIG. 3).

  Referring to FIG. 1 or FIG. 2, the base member 8 is fixed by anchor bolts 8b embedded in the floor surface FL. The pair of base members 8 and 8 extend substantially parallel to the same direction as the direction in which the rotating shaft 7s protrudes. By moving the electric motor 7 with respect to the pair of base members 8 and 8, the rotating shaft 7s and the rotated shaft 9s can be aligned.

(Configuration of positioning mechanism)
Next, the configuration of the electric motor positioning mechanism according to an embodiment of the present invention will be described. Referring to FIGS. 1 to 4, an electric motor positioning mechanism (hereinafter abbreviated as a positioning mechanism) 10 according to the embodiment includes a first moving means M <b> 1 and a second moving means M <b> 2.

  Referring to FIG. 2, the first moving means M1 can move the frame 7f with respect to the pair of base members 8 and 8 in the same direction as the direction in which the rotation shaft 7s protrudes. The second moving means M2 can move the frame 7f with respect to the pair of base members 8 and 8 in a direction substantially orthogonal to the direction in which the rotation shaft 7s protrudes.

  1 to 4, the first moving means M1 includes a first fixing member 1a and a first adjusting bolt 1b. The first fixing member 1a is spaced apart from the front surface 71 and the rear surface 72 of the frame 7f (see FIG. 2). The first fixing member 1a is fixed to the pair of base members 8 and 8. Moreover, the 1st fixing member 1a forms the 1st internal thread hole 11a penetrated toward the front surface 71 and the rear surface 72 of the flame | frame 7f. The first adjustment bolt 1b is screwed into the first female screw hole 11a. The front end portion of the first adjustment bolt 1b can abut on the front surface 71 or the rear surface 72 of the frame 7f.

  Referring to FIGS. 1 to 4, the second moving means M2 includes a second fixing member 2a and a second adjustment bolt 2b. The second fixing member 2a is fixed to the front surface 71 and the rear surface 72 of the frame 7f. Moreover, the 2nd fixing member 2a forms the 2nd female screw hole 21a which opposes. The second adjustment bolt 2b is screwed into the second female screw hole 21a. The tip of the second adjustment bolt 2b can abut against the opposing side surfaces of the pair of base members 8, 8.

  Referring to FIG. 1 or FIG. 4, the first fixing member 1 a includes an angle member formed by a one piece 11 and another piece 12 at a substantially right angle. One piece 11 of the first fixing member 1 a is fixed to the upper surface 8 u of the base member 8. A first female screw hole 11a is formed in the other piece 12 of the first fixing member 1a.

  On the other hand, referring to FIG. 3 or FIG. 4, the second fixing member 2 a includes an angle member formed by the one piece 21 and the other piece 22 at a substantially right angle. One piece 21 of the second fixing member 2a is welded to the front surface 71 and the rear surface 72 of the frame 7f. A second female screw hole 21a is formed in the other piece 22 of the second fixing member 2a.

  Referring to FIG. 2 or FIG. 4, a nut 2n is welded to the other piece 22 of the second fixing member 2a. The second female screw hole 21a includes a female screw (not shown) formed at the center of the nut 2n.

[Operation of positioning mechanism of electric motor]
Next, the operation and effect of the positioning mechanism 10 will be described while describing the positioning method of the positioning mechanism 10 according to the embodiment.

  Referring to FIG. 1 or FIG. 2, the pair of first adjustment bolts 1b and 1b arranged on the front surface 71 side of the frame 7f is rotated in one direction to advance these first adjustment bolts 1b and 1b. At the same time, when the pair of first adjustment bolts 1b and 1b arranged on the rear surface 72 side of the frame 7f is rotated in the other direction to retract the first adjustment bolts 1b and 1b, the arrow B in FIG. The electric motor 7 can be moved in the direction.

  On the other hand, referring to FIG. 1 or FIG. 2, the pair of first adjustment bolts 1b and 1b arranged on the rear surface 72 side of the frame 7f are rotated in one direction, and these first adjustment bolts 1b and 1b are rotated. When the pair of first adjusting bolts 1b and 1b arranged on the front surface 71 side of the frame 7f is rotated in the other direction and the first adjusting bolts 1b and 1b are moved backward, the arrows in FIG. The electric motor 7 can be moved in the direction of F.

  As described above, the positioning mechanism 10 according to the embodiment rotates the pair of first adjustment bolts 1b so that the first adjustment bolts 1b abut against the front surface 71 or the rear surface 72 of the electric motor 7, The electric motor 7 can be moved in the front-rear direction with respect to the base members 8.

  Referring to FIG. 2 or FIG. 3, a pair of second adjustment bolts 2b and 2b arranged on one base member 8 side is rotated in one direction to advance these second adjustment bolts 2b and 2b. When a pair of second adjustment bolts 2b and 2b arranged on the other base member 8 side is rotated in the other direction to retract these second adjustment bolts 2b and 2b, FIG. The electric motor 7 can be moved in the direction of the arrow R in FIG.

  On the other hand, referring to FIG. 2 or FIG. 3, a pair of second adjustment bolts 2b and 2b arranged on the other base member 8 side is rotated in one direction, and these second adjustment bolts 2b and 2b are rotated. 2 and rotating a pair of second adjustment bolts 2b and 2b arranged on one base member 8 side in the other direction to retract these second adjustment bolts 2b and 2b, FIG. Alternatively, the electric motor 7 can be moved in the direction of the arrow L in FIG.

  As described above, the positioning mechanism 10 according to the embodiment rotates the pair of second adjustment bolts 2b so that the second adjustment bolts 2b abut against the opposing side surfaces 8s of the pair of base members 8 and 8. Thus, the electric motor 7 can be moved relative to the pair of base members 8 and 8 in the left-right direction.

  The positioning mechanism 10 according to the embodiment can easily move the electric motor 7 by gripping and rotating the head of the first adjustment bolt 1b or the head of the second adjustment bolt 2b with a spanner or the like. For example, in order to connect the fan shaft of the forced air blower and the rotating shaft of the electric motor, it is easy to move the large electric motor. The positioning mechanism 10 according to the embodiment does not require labor as compared with the conventional moving method, and there is no fear of damaging the electric motor.

  The positioning mechanism according to the present invention is expected to be applied not only to an electric motor connected to a forced blower but also to any electric motor.

DESCRIPTION OF SYMBOLS 1a 1st fixing member 1b 1st adjustment bolt 2a 2nd fixing member 2b 2nd adjustment bolt 7 Electric motor 7f Frame 7s Rotating shaft 8.8 Pair of base members 9s Rotated shaft 10 Positioning mechanism (Motor positioning mechanism)
11a First female screw hole 21a Second female screw hole 71 Front surface of frame 72 Rear surface of frame M1 First moving means M2 Second moving means

Claims (4)

The bottom of the frame has a pair of channel-shaped base members having a rotation shaft protruding from the front surface of the frame constituting the outer shell, fixed to the floor surface, and extending substantially parallel to the direction in which the rotation shaft protrudes. An electric motor positioning mechanism for aligning the rotating shaft and the rotated shaft by moving an electric motor on which both wings are mounted,
First moving means for moving the frame in the same direction as the direction in which the rotating shaft protrudes with respect to the pair of base members;
An electric motor positioning mechanism comprising: a second moving unit that moves the frame in a direction substantially orthogonal to a direction in which the rotating shaft protrudes with respect to the pair of base members. The first moving means includes
A pair of first fixing members that are fixed to the pair of base members spaced apart from the front and rear surfaces of the frame, and that form first female screw holes penetrating toward the front and rear surfaces of the frame;
A first adjustment bolt that is screwed into the first female screw hole, and a front end portion of which can be brought into contact with the front surface or the rear surface of the frame,
The second moving means includes
A pair of second fixing members fixed to the front and rear surfaces of the frame and having opposed second female screw holes;
The positioning mechanism for an electric motor according to claim 1, further comprising: a second adjustment bolt that is screwed into the second female screw hole and has a front end portion that can be in contact with opposing side surfaces of the pair of base members. The first fixing member includes a first angle member in which one piece is fixed to the upper surface of the base member and the first female screw hole is formed in the other piece,
The electric motor positioning mechanism according to claim 2, wherein the second fixing member includes a second angle member in which one piece is welded to the front and rear surfaces of the frame and the second female screw hole is formed in the other piece.   The electric motor positioning mechanism according to claim 3, wherein the second female screw hole includes a female screw formed at a central portion of a nut welded to the other piece of the second angle member.

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