JP5234883B2 - Centering installation method and error indicator - Google Patents

Description

The present invention relates to a centering installation method for installing a rotating machine such as a driving prime mover, and an error indicator for obtaining a level error in the centering.
Note that the installation is not limited to the case of newly installing a rotating machine, but also includes the case of installing a rotating machine once removed for replacement or maintenance of the rotating machine.

In the installation work of driving prime movers such as pumps, compressors, and reduction gears, for example, when connecting the rotation shaft of a reduction gear and the rotation shaft of the prime mover, centering work for accurately aligning both rotation shafts is required. It becomes extremely important. As conventional centering operations, methods described in Patent Documents 1 to 3 are known.
In Patent Document 1, a pair of flanges (couplings) are attached to the driving-side rotating shaft and the driven-side rotating shaft, and temporarily placed so that the joint surfaces of the pair of flanges face each other. At least one flange The dial gauge is fixed at a position radially away from the shaft center, and at least one of the flanges is relatively rotated while the measurement end of the dial gauge is in contact with the opposite surface of the other flange. A technique for performing dispensing is disclosed.

Patent Document 2 discloses an installation method for a servo motor that is one of prime movers.
Specifically, when installing the servo motor on the base plate attached to the wall surface within the pitch, first the servo motor is centered at the position of the connecting portion with the operating rod, and then the servo motor flange is installed on the base plate. Install the operation rod in a state that can be adjusted in the direction of the installation length with bolts, and then adjust the installation length of the servo motor so that the installation length of the servo motor is appropriate for the operation using multiple adjustment screws. Connected to the servo motor and filled with the gap around the flange, the installation bolt and the adjustment screw sealed with a seal member to the installation gap existing between the base plate and the servo motor flange. Inject the agent into the installation gap from below to perform vertical positioning and fill There is completely fixed to the mounting said base plate to said servo motor by tightening the bolts after the hardening.

Further, Patent Document 3 discloses that a dedicated device for installing a prime mover that is a drive source of a load device such as a pump is used to align the shaft on the output shaft of the prime mover when the prime mover is installed. ) Is made easy and does not require skilled work.
JP-A-8-232968 JP-A-6-213131 Japanese Patent Laid-Open No. 2005-249028

In the method described in Patent Document 1, it is possible to measure whether or not the centering at the time of installation is correctly performed. However, although installation work technology on the driving side or driven side for centering is important, there is no disclosure of that technology, and it is difficult to say that quick installation and centering can be performed.
Moreover, since the method described in Patent Document 2 is a special method of filling the base plate and the installation gap with a filler, there is a drawback that it cannot be generally used.
Further, in the method described in Patent Document 3, there is a risk that it takes cost and time to create a dedicated device that matches the installation location.
The present invention has been made paying attention to the above points, and it is an object of the present invention to realize centering by a simple method and to perform quick installation.

In order to solve the above-mentioned problem, the invention described in claim 1 of the present invention is characterized in that the rotating shaft of another rotating machine is coaxially centered with respect to the rotating shaft of one rotating machine, and the other rotating machine is installed. When installing the part on the installation surface,
For centering, the joint surfaces of the couplings provided on the two rotary shafts were adjusted so that the centers of the couplings were aligned and placed opposite to each other, and the installation part of another rotary machine was temporarily placed on the installation surface Later, out of the gaps between the joint surfaces facing each other, find the gaps at two positions separated in the direction of level adjustment,
The level adjustment direction at the target installation part from the difference between the two gaps, the separation distance of the position where the two gaps are obtained, and the distance from the coupling to the target installation part The level error at the time of installation is determined, and the level adjustment at the time of installation is performed with the obtained level error.
At that time, a display board on which XY coordinates are displayed on the surface, and a slide bar that is pivotally supported on the display board at the origin of the XY coordinates and arranged along the surface of the display board A straight line provided on the slide bar with an extension line passing above the origin, a cursor guided by the slide bar and linearly reciprocating along the straight line of the slide bar, and a center provided on the cursor And a mark located on the straight line, the position indicated on the XY coordinate by the cursor is visible, and a scale of one of the XY coordinates is used as a scale of the joint surface. A scale that serves as both a gap amount difference and a level adjustment allowance is described, and as the scale of the other coordinate of the XY coordinates, both the separation distance and the distance from the coupling to each target installation part are described. Double eyes Riga using error indicator as described,
Obtain the level adjustment fee for each installation part individually, perform the above level adjustment,
At that time, an XY coordinate position that is a value of a gap amount difference that is a difference between a gap amount at a position relatively close to the installation portion and a gap amount at a far position as viewed from the rotation axis direction and the above-mentioned separation distance. After adjusting the slide bar and cursor so that the center of the mark is located at
For each installation part, move the cursor to the position where the mark of the other coordinate is the distance from the coupling to the target installation part, and install according to the scale of one coordinate at that time. It is an object of the present invention to provide a centering installation method characterized in that the level error of the installation part with respect to the surface is individually obtained and the level adjustment at the time of installation is performed with the obtained level error.
Examples of the other rotating machine include a driving prime mover.

Next, in the invention described in claim 2, when rotating the rotating shaft of another rotating machine coaxially with respect to the rotating shaft of one rotating machine and installing the installation portion of the other rotating machine on the installation surface, For centering, the joint surfaces of the couplings provided on the two rotary shafts were adjusted so that the centers of the couplings were aligned and placed opposite to each other, and the installation part of another rotary machine was temporarily placed on the installation surface Later, out of the gap amounts between the opposing joint surfaces, the respective gap amounts at two positions separated in the direction of level adjustment are obtained, and the gap amount difference between the two gap amounts and the two gap amounts are calculated. The level error in the level adjustment direction at the target installation part is obtained from the distance of the obtained position and the distance from the coupling to the target installation part, and the level at the time of installation with the obtained level error Used when making adjustments Is, an error indicator is used to determine the level error,
A display board having XY coordinates displayed on the surface, a slide bar rotatably supported at the origin of the XY coordinates with respect to the display board and arranged along the surface of the display board; and a slide bar An extension line that passes over the origin, a cursor that is guided by a slide bar and that can linearly reciprocate along the straight line of the slide bar, A mark located on the top, and the position indicated on the XY coordinates by the cursor is visible.
As a scale of one of the XY coordinates, a scale serving as both a gap amount difference between joint surfaces and a level adjustment allowance is described.
As the scale of the other coordinate of the XY coordinates, a scale that serves as both the separation distance and the distance from the coupling to each target installation part is described.

  According to the present invention, centering can be realized by a simple method, and level adjustment for installation can be easily performed.

Next, embodiments of the present invention will be described with reference to the drawings.
First, the configuration of the error indicator will be described.
1 is a plan view showing the surface of the error indicator, FIG. 2 is a side view, and FIG. 3 is a partially enlarged view around the cursor.
As shown in FIG. 1, XY coordinates 2 are displayed on the surface of the flat display plate 1, and a dimensional difference that is a gap amount difference between coupling surfaces and a liner margin ( Level error) is displayed at regular intervals. Further, as scales on the horizontal axis, values corresponding to the outer diameter (separation distance) of the coupling and the distance from the coupling center to the installation portion are displayed at equal intervals. Note that the XY coordinates 2 need not be orthogonal coordinates.

A slide bar 3 is rotatably supported with respect to the origin of the XY coordinates 2. The slide bar 3 is made of transparent acrylic so that the XY coordinates 2 can be visually recognized from the upper side, and a straight line 4 displayed in red is provided at the center.
Reference numeral 6 denotes a rubber ring, which keeps the slide bar 3 slightly lifted from the display plate 1.

A stopper 7 is provided at the distal end of the slide bar 3. The stopper 7 is composed of, for example, a clip-shaped component, and temporarily fixes the slide bar 3 at a desired inclined position by sandwiching the end of the display panel 1. The mechanism of the stopper 7 is not limited to this. For example, the slide bar 3 may be temporarily fixed by being made of rubber having a large friction coefficient on the surface facing the display plate 1 and pressing the stopper 7 against the display plate 1 with a finger or the like. .
A cursor 5 is slidably supported on the slide bar 3. The cursor 5 is guided by the slide bar 3 and can move linearly.

As shown in FIG. 3, the cursor 5 includes a frame body 5a supported by the slide bar 3, and a convex lens 5b fitted into the frame body 5a. The convex lens 5 b is located above the slide bar 3, and a cross line centered on the straight line 4 of the slide bar 3 is drawn as a mark 8 on the convex lens 5 b. The center of the cross is the designated position. The convex lens 5b is for enlarging the indicated position to facilitate visual recognition.
It is not necessary to set the designated position at the center position of the slide bar 3 or the cursor 5. In the present embodiment, since the contours of the left and right sides of the slide bar 3 are formed in a straight line, the straight line and the mark provided on the cursor 5 are crossed so as to point to a specific position on the straight line. The upper indicated position may be specified.

A plate spring 5c that is biased toward the slide bar 3 is provided at a position facing the side surface of the slide bar 3 in the frame 5a. The leaf spring 5c suppresses the swinging of the slide bar 3 so that the cursor 5 can be positioned with certainty, and is easily adapted to the slide bar 3 so that it can move along the slide bar 3. .
Reference numeral 5d denotes a slip stopper, and the cursor 5 may be moved by operating the slip stopper 5d with a finger or the like.
In addition, as shown in FIG. 4, an example of use of the error indicator is displayed on the back surface of the display board 1.

Next, a usage example of the error indicator will be described.
In this example, the level adjustment direction is the vertical direction and the coupling outer diameter is used as the separation distance.
The error indicator having the above-described configuration includes a coupling provided on a rotating shaft of a rotating machine installed in advance (hereinafter, the rotating shaft on the non-installation side is also referred to as a first rotating shaft) in accordance with the method of using the back surface. In the coupling provided on the rotating shaft of the rotating machine to be installed (hereinafter, the rotating shaft on the installation side is also referred to as the second rotating shaft), when temporarily placed so that the joint surfaces of both faces each other, for example, Measure the gap amount between both joint surfaces at the coupling upper end position and the gap amount between both joint surfaces at the coupling lower end position, and calculate the gap amount difference (dimensional difference between the surfaces) of both gap amounts. .

Then, the value of the gap amount difference is selected from the scale on the vertical axis, the outer diameter (separation distance) of the coupling is selected from the scale on the horizontal axis, the intersection is specified, and the straight line of the slide bar 3 is the intersection. The inclination of the slide bar 3 is changed and adjusted so as to pass through the position, and the slide bar 3 is fixed at that position.
Next, the distance between the coupling joint surface on the first rotating shaft side and the position of the installation portion (for example, based on the center position of the installation portion or the bolt hole position) in the direction of the rotation axis is referred to as an installation separation distance. Then, the cursor 5 is moved to a position where the scale on the horizontal axis becomes the installation separation distance, and the center of the cross is aligned, and the scale on the vertical axis at that time becomes a level adjustment allowance (level error). This is done for each installation unit.
Since the value on the vertical axis side is smaller as described above, the unit of one scale on the vertical axis is set smaller than the horizontal axis.

Next, the centering installation work of the rotating machine will be described.
In the present embodiment, as shown in FIG. 5, as the rotating machine, the input shaft 11 (first rotating shaft) of the speed reducer 10 is centered on the output shaft 13 (second rotating shaft) of the motor 12 that is the prime mover. The case where the base 14 which is the installation part of the electric motor 12 is installed on the installation surface 18 will be described as an example.
The distances L1 and L2 from the joint surface of the coupling 15 previously attached to the output shaft 13 to the installation portions X and Y (pedestal) are measured in advance. Note that the diameters of the couplings 15 and 16 may be measured in advance or the specifications listed in the catalog may be used.

Then, the motor 12 is temporarily placed by aligning the cores 16 so that the coupling 16 provided on the input shaft 11 of the fixed speed reducer 10 and the coupling 15 provided on the output shaft 13 of the motor 12 face each other. (For example, temporarily fix the installation part with a bolt). At this time, it is adjusted and installed so that the center of the coupling on the output shaft 13 side is aligned with the axis S1 of the input shaft 11.
The joint surfaces of the couplings 15 and 16 form a surface orthogonal to the rotation axis. The vertical gap difference between the couplings 15 and 16 with respect to the outer diameters of the couplings 15 and 16 is the same as the inclination of the axis S2 of the electric motor 12 with respect to the axis S1.

First, the level adjustment work in the vertical direction is performed. This is described next.
Using the scale, skimming gauge, dial gauge, etc., the amount of clearance between the coupling joint surfaces at the lowermost end and the amount of clearance at the uppermost end of the outer periphery of the couplings 15 and 16 in the temporarily placed state. And measure the difference between the upper and lower gaps (dimensional difference). This gap amount difference with respect to the outer diameter (separation distance) of the couplings 15 and 16 is the vertical inclination of the shaft of the motor 12 with respect to the input shaft 11, that is, the vertical level error. After adjusting the level of each installation part by that amount, the installation part is formally fixed to the installation surface with bolts.

In the present embodiment, the level error is obtained using the error indicator.
That is, using the error indicator, the value of the gap amount is taken as a scale on the vertical axis, the outer diameter of the couplings 15 and 16 is taken as a scale on the horizontal axis, and the intersection is passed through. Adjust the tilt of the slide bar 3 and fix it.
Here, although the case where the distance of the position where the upper and lower gaps are measured is equal to the outer diameter of the couplings 15 and 16 is described, the separation distance may be different from the outer diameter of the couplings 15 and 16 separately. good. For example, when the line segment connecting the positions where the upper and lower gaps are measured is measured at a position where it does not pass through the centers of the couplings 15 and 16, the distance between the upper and lower measurement positions is separately measured using a gauge or the like. Then take the horizontal scale to find the separation distance. Even when the couplings 15 and 16 are taken so as to pass through the center, it is of course possible to actually measure the upper and lower distances.

Next, by moving the cursor 5 so that the scale on the horizontal axis becomes the installation separation distances L1 and L2 to the installation part, and looking at the vertical axis at the cursor 5 position, the level error at the installation part position is reduced. Easy to understand. The cursor 5 is moved for each installation part, and the level error at each installation position is obtained individually.
Since the distance between the left and right installation parts with respect to the coupling surface is the same, the level may be adjusted by the same amount.

  For example, when the coupling dimension is 200 mm, the slide bar 3 is tilted as shown in FIG. 1 when the vertical dimension difference of the distance between the coupling surfaces is 200 mm. If this tilted state is locked and the pedestal X is separated by 600 mm, for example, the scale on the horizontal axis moves the cursor 5 to the 600 mm position and the scale on the vertical axis (1.5 mm) is read. Thus, it can be seen that the vertical relationship can be maintained by inserting and fixing the liner 20 having a thickness of 1.5 mm at the X position as a spacer between the base 14 and the foundation 18. Similarly, for the base Y, the level adjustment is performed by inserting the liner 21 having the thickness of the obtained level error between the base 14 and the base 18. In this way, accurate vertical positioning is performed by adjusting the level at each mounting position by the level error at each mounting position determined simply from the error indicator. In addition, the surface of the foundation 18 becomes an installation surface.

As described above, the liners 20 and 21 having the thicknesses read at the positions of the respective installation portions are created, set, and the electric motor 12 is fixed to the foundation 18 (installation surface) to complete the vertical positioning. Here, it is recognized that the level adjustment in the vertical direction of the distance between the coupling surfaces is difficult for those skilled in the art to adjust and requires skill. However, the level adjustment allowance can be easily obtained by using the error indicator, and skill is not necessarily required.
In the above adjustment, level adjustment using a gap amount between a position relatively close to the installation portion and a position far from the installation portion, that is, level adjustment in the facing direction between the installation surface and the installation portion is performed.

Next, level adjustment in the horizontal direction is performed.
Here, regarding the horizontal positioning, the lateral inclination between the coupling surfaces can be obtained by the difference between the lateral surfaces, but it can be corrected by simply shaking the motor 12 in the lateral direction. I don't need it. Therefore, it is not always necessary to use the error indicator for horizontal alignment.
However, an error indicator may be used for horizontal alignment. In this case, the level error at each installation position can be easily obtained in the same manner as described above by using the difference between the gaps in the two horizontal directions.

Here, although the case where the installation part (pedestal) was installed on the installation surface was illustrated in the said embodiment, it is not limited to this. For example, the present invention can be applied even when the ceiling surface or wall surface is used as an installation surface.
Moreover, although the said embodiment illustrated in the case of installing the drive-side rotary machine, it is applicable also when installing the non-drive-side rotary machine. The rotating machine is not particularly limited to an electric motor, and can be applied to rotating machines such as hydraulic and pneumatic pumps and motors.

It is a top view which shows the surface of the error indicator which concerns on embodiment based on this invention. It is a side view of an error indicator concerning an embodiment based on the present invention. It is the elements on larger scale which show the cursor part which concerns on embodiment based on this invention, Comprising: (a) is a top view, (b) is a side view. It is a top view which shows the back surface of the error indicator which concerns on embodiment based on this invention. It is a figure which shows the state which set | placed the rotary machine temporarily. It is a figure which shows the state which adjusted the level of the up-down direction.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Display board 2 XY coordinate 3 Scale bar 4 Straight line 5 Cursor 7 Stopper 10 Reduction gear 11 Input shaft 12 Electric motor 13 Output shaft 15, 16 Coupling 14 Base (installation part)
18 Foundation (installation surface)

Claims (2)

When rotating the rotating shaft of another rotating machine coaxially with the rotating shaft of one rotating machine and installing the installation part of the other rotating machine on the installation surface,
For centering, the joint surfaces of the couplings provided on the two rotary shafts were adjusted so that the centers of the couplings were aligned and placed opposite to each other, and the installation part of another rotary machine was temporarily placed on the installation surface Later, out of the gaps between the joint surfaces facing each other, find the gaps at two positions separated in the direction of level adjustment,
The level adjustment direction at the target installation part from the difference between the two gaps, the separation distance of the position where the two gaps are obtained, and the distance from the coupling to the target installation part The level error at the time of installation is determined, and the level adjustment at the time of installation is performed with the obtained level error.
At that time, a display board on which XY coordinates are displayed on the surface, and a slide bar that is pivotally supported on the display board at the origin of the XY coordinates and arranged along the surface of the display board A straight line provided on the slide bar with an extension line passing above the origin, a cursor guided by the slide bar and linearly reciprocating along the straight line of the slide bar, and a center provided on the cursor And a mark located on the straight line, the position indicated on the XY coordinate by the cursor is visible, and a scale of one of the XY coordinates is used as a scale of the joint surface. A scale that serves as both a gap amount difference and a level adjustment allowance is described, and as the scale of the other coordinate of the XY coordinates, both the separation distance and the distance from the coupling to each target installation part are described. Double eyes Riga using error indicator as described,
Obtain the level adjustment fee for each installation part individually, perform the above level adjustment,
At that time, an XY coordinate position that is a value of a gap amount difference that is a difference between a gap amount at a position relatively close to the installation portion and a gap amount at a far position as viewed from the rotation axis direction and the above-mentioned separation distance. After adjusting the slide bar and cursor so that the center of the mark is located at
For each installation part, move the cursor to the position where the mark of the other coordinate is the distance from the coupling to the target installation part, and install according to the scale of one coordinate at that time. A centering installation method characterized in that the level error of the installation part with respect to the surface is individually obtained and the level adjustment at the time of installation is performed with the obtained level error. When the rotating shaft of another rotating machine is centered coaxially with respect to the rotating shaft of one rotating machine and the installation part of the other rotating machine is installed on the mounting surface, the above two rotating shafts are used for centering. After adjusting the joint surfaces of the couplings provided so that the centers of the couplings are aligned and facing each other and temporarily placing the installation part of another rotating machine on the installation surface, the gap amount between the opposing joint surfaces , The amount of each gap at two positions separated in the direction of level adjustment is obtained, the gap amount difference between the two gap amounts, the separation distance of the two gap amounts obtained, and the target from the coupling The level error in the level adjustment direction at the target installation part is obtained from the distance to the installation part to be used, and the level error is used when performing level adjustment at the time of installation with the obtained level error. Ask for A error indicator to be used for,
A display board having XY coordinates displayed on the surface, a slide bar rotatably supported at the origin of the XY coordinates with respect to the display board and arranged along the surface of the display board; and a slide bar An extension line that passes over the origin, a cursor that is guided by a slide bar and that can linearly reciprocate along the straight line of the slide bar, A mark located on the top, and the position indicated on the XY coordinates by the cursor is visible.
As a scale of one of the XY coordinates, a scale serving as both a gap amount difference between joint surfaces and a level adjustment allowance is described.
An error indicator, wherein a scale serving as both the separation distance and the distance from the coupling to each target installation portion is described as a scale of the other coordinate of the XY coordinates .

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