JP2005337385A - Device for supporting adjustment of rotary shaft connecting joint, and method of adjusting rotary shaft connecting joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accurately and efficiently adjust a rotary shaft connecting joint by measuring deviation and angle of deviation of a connection part by manually rotating the rotary shaft without requiring to rotate a rotating machine at constant speed. <P>SOLUTION: This device has shaft vibration measuring means 5a-5d arranged at a plurality of positions in the axial direction of the rotary shafts 1 and 2, a plurality of circumferential position detecting means 21 arranged with an equal interval in the circumferential direction on the rotary shafts 1 and 2, a circumferential position measuring means 20 for measuring circumferential position on the basis of a signal obtained from the circumferential position detecting means 21, a shaft vibration processing means 14 for computing quantity of shaft vibration at each of positions in the circumferential direction of the rotary shafts 1 and 2 on the basis of a signal measured by the circumferential position measuring means 20 and signals of the shaft vibration quantity measured by the shaft vibration measuring means 5a-5d, and a deviation and angle of deviation computing means 15 for computing direction and quantity of deviation and angle of deviation on the basis of the information about installation position of the shaft vibration measuring means 5a-5d and the circumferential position measuring means 21 and the shaft vibration quantity computed by the shaft vibration processing means 14. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adjustment support device for a coupling joint (coupling) for connecting a rotation shaft and a method for adjusting the coupling joint, and more particularly to a rotation shaft connection joint adjustment support device and a rotation suitable for adjusting a connection portion between a motor shaft and a pump shaft. The present invention relates to a method for adjusting a shaft coupling joint.

  In general, in a rotating machine coupled by a coupling joint such as a motor shaft and a pump shaft, it is necessary to adjust the direction and amount of the eccentricity and declination of the coupling portion so as to reduce shaft vibration during operation. When the adjustment of the direction and amount of the eccentricity or declination of the connecting portion is insufficient, the shaft vibration value becomes excessive due to the eccentricity or declination during rotation, and it is necessary to adjust the connecting portion again.

  As this adjustment method, there is a method in which a dial gauge is used as a measuring instrument, the amount of axial runout of the connecting portion is measured, and the connecting portion is adjusted so as to be within an allowable value of the axial runout amount. In this method, a dial gauge is installed on the rotating shaft, the rotating shaft is rotated by hand turning or the like, and the amount of shaft runout is measured from several locations in the circumferential direction.

  Further, there is a method of measuring the direction and amount of eccentricity and declination of a connecting portion using a plurality of non-contact displacement meters in the axial direction or circumferential direction as a measuring instrument. (For example, refer to Patent Document 1 and Patent Document 2). This method is a method of measuring the eccentricity and the declination of the rotating shaft by measuring the amount of shaft runout with a non-contact displacement meter and measuring the phase difference. Patent Document 1 calculates a vibration vector from a measured value and a phase difference of a shaft runout during a constant rotation, and calculates the direction and amount of the eccentricity and declination of the rotating shaft. Patent Document 2 calculates a vibration vector from a measured value of a shaft shake at a constant rotation and a phase difference, and calculates the direction and amount of a declination of the rotation axis.

In order to prevent the deflection angle, it is necessary to make the deflection angle of the end face of the motor shaft as small as possible. The work performed for this purpose will be described below. FIG. 21 shows an example of a motor shaft of a shaft coupling joint in a vertical pump used in a power plant or the like. This type of pump has a structure in which a motor shaft and a pump shaft are coupled by a spacer coupling joint. During operation, the axial load that pushes the pump shaft toward the motor shaft changes depending on the operating conditions, and the motor shaft end face and the spacer coupling joint may come in contact with each other. In the case of contact, the deviation angle of the end face of the motor shaft directly becomes the deviation angle of the pump shaft, which causes an increase in vibration of the rotary shaft. Therefore, conventionally, as shown in FIG. 21, a jig 141 is attached to the motor shaft 108 to the outer diameter of the motor shaft 108, the contact state is confirmed by Komyotan etc., and the eccentric angle and flatness of the shaft end surface are confirmed. Is measured. If the contact situation is bad, the shaft end face is ground so that the shaft deflection angle is zero as much as possible. The end face contact jig 141 is mounted on the outer shape of the motor shaft 108 with high accuracy, and maintains a flat surface with no deviation of the bottom surface against which the shaft end surface hits.
Japanese Patent No. 2848720 JP 2001-153757 A

  In the method and apparatus for adjusting the coupling joint of the rotary shaft described above, first, in the case of measurement using a dial gauge, measurement is generally made at several points in two directions and in the axial direction perpendicular to the circumferential direction. The connecting part is adjusted so that the maximum value and the minimum value can be measured and within the allowable value. In this case, the direction and amount of shaft runout at the measurement position will be clear, but it is difficult to know how much, eccentricity, or angle in which direction the pump shaft and motor shaft are It is difficult to adjust well. In addition, by increasing the number of measurement points, it is possible to improve the measurement accuracy of the direction and amount of shaft runout, but the rotation axis is fixed in the direction of measurement, the shaft runout amount is read, and the rotation is performed in the next direction. It is necessary to repeat operations such as fixing and reading the shaft runout. In this case, there are a problem that the working time increases and a problem that it is difficult to accurately set the circumferential position to be measured.

  In the methods of Patent Document 1 and Patent Document 2, the direction and amount of the eccentricity or declination of the connecting portion are calculated from the measured shaft vibration value and phase information. In order to calculate the value, the rotating machine needs to be in a rotating state at a constant speed. In this case, after the adjustment work is performed, the rotating machine is operated, and the measurement work and pass / fail confirmation are performed. However, in this case, since it is necessary to put the rotating machine into an operating state, there is a problem that adjustment work cannot be performed continuously and work efficiency deteriorates.

  The measurement and correction work of the declination state of the motor shaft end face is difficult because the weight of the jig 141 per end face is as heavy as about 30 kg and the fit tolerance with the shaft is as small as about 20 μm, and the work for removing is difficult and the work time is also 1 There is a problem that it takes more than a day.

  Moreover, it is difficult to quantitatively grasp the declination state, and it is difficult to grasp the grinding amount for improving the declination state. For this reason, it may be necessary to repeat measurement and correction operations.

  The present invention has been made to solve the above-described problems, and does not require the rotating machine to be in a rotating state at a constant speed, and measures the eccentricity and declination state of the rotating shaft connecting portion by manually rotating the rotating shaft. Rotating shaft coupling joint adjusting method and rotating shaft coupling for the same, which can be adjusted accurately and efficiently, and can be performed accurately and efficiently for adjusting the deflection angle state of the rotating shaft end face An object of the present invention is to provide a joint adjustment support device.

  The present invention achieves the above-mentioned object, and the present invention provides a rotary shaft coupling joint adjustment support device for adjusting a coupling state of coupling couplings that couple two rotary shafts. A plurality of axial position measuring means arranged at equal intervals in the circumferential direction of the rotating shaft, and a circumferential position measuring means for measuring the circumferential position by a signal obtained from the circumferential position detecting means. A shaft vibration process for calculating the amount of shaft runout at each position in the circumferential direction of the rotating shaft based on the signal measured by the circumferential position measuring unit and the shaft runout amount signal measured by the shaft vibration measuring unit. The eccentric declination calculation calculates the direction and amount of decentering and declination based on the information on the installation position of the means, the axial vibration measuring means and the circumferential position measuring means and the axial runout amount calculated by the axial vibration processing means And means It is characterized in.

  The present invention also relates to a rotating shaft coupling joint adjusting method for adjusting a coupling state of a coupling joint that couples two rotating shafts, and measuring shaft vibration at a plurality of axial positions while rotating the rotating shaft. And a measurement step for measuring the circumferential position by a signal obtained from circumferential position detectors arranged at equal intervals in the circumferential direction on the rotational axis, and information on the rotational axis based on information on the circumferential position and axial vibration. Based on the axial vibration processing step for calculating the axial vibration amount at each position in the circumferential direction, the rotation based on the information on the circumferential position obtained by the measurement step and the axial vibration amount calculated in the axial vibration processing step. An eccentric declination calculating step for calculating the direction and amount of decentering and declination of the shaft.

  Further, the present invention provides a rotary shaft coupling joint adjustment support device for adjusting a coupling state of a coupling joint that couples two rotary shafts, and is disposed on the rotary shaft so as to face the end surface of the rotary shaft. A displacement meter that can measure the distance to the opposing portion of the end surface, and a moving mechanism that moves the displacement meter substantially parallel to the end surface while facing the end surface, with these displacement meter and moving mechanism, It is comprised so that the squareness and shape of the said end surface can be measured.

  According to another aspect of the present invention, there is provided a rotary shaft coupling joint adjustment method for adjusting a coupling state of a coupling joint that couples two rotary shafts. A measuring step for measuring the distance of the meter, and a moving step for moving the displacement meter substantially parallel to the end surface so that the displacement meter faces the other part of the end surface. It measures the angle and shape.

  According to the present invention, there is no need to set the rotating machine to a rotating state at a constant speed, and for example, the eccentricity and the declination state of the rotating shaft connecting portion can be measured and adjusted accurately and efficiently by turning the rotating shaft. it can. In addition, since the declination state is improved, the declination state of the shaft end face can be efficiently and accurately measured.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a rotating shaft coupling joint adjusting method and a rotating shaft coupling joint adjusting support device therefor according to the present invention will be described below with reference to the drawings.

[First Embodiment]
First, the first embodiment will be described with reference to FIGS. As shown in FIG. 1, this embodiment shows a structure in which a motor shaft 1 and a pump shaft 2 are connected by a motor side coupling joint 3 and a pump side coupling joint 4 as an example of a rotating body having a coupling portion. ing. Non-contact displacement meters 5 a to 5 e are arranged in the axial direction as shaft vibration measuring means for measuring the amount of shaft deflection, and are fixed by sensor jigs 6 and 7. The sensor jigs 6 and 7 are fixed to the motor lower surface 50 and the pump upper surface 51 by, for example, magnets. In addition, when fixing with a magnet, it may be difficult to ensure positional deviation due to contact and reproducibility of the mounting position. It is desirable to use and fix firmly.

  In adjustment work such as centering of the motor shaft 1, the motor shaft 1 is moved or fixed using a motor shaft fixing jig 36 and a motor shaft fixing bolt 38 as shown in FIG. The motor shaft fixing jig 36 is firmly fixed to the lower surface of the motor with fixing bolts 37.

  FIG. 3 shows an example in which the sensor jig 6 is attached using a bolt hole in the motor lower surface 50. The sensor jig 6 is fixed to the mounting plate 39, and the mounting plate 39 is fixed to the motor lower surface 50 by the fixing bolt 37. With such a structure, the sensor jig 6 can be firmly fixed. In addition, the bolt holes and other structures installed in advance in the rotating machine and the jigs used for normal adjustment work such as the motor shaft fixing jig 36 and the motor shaft fixing bolt 38 can be used. There is an effect that is not necessary.

  By installing two non-contact displacement meters 5 on the motor shaft 1 and two locations on the pump side coupling joint 4, it is possible to measure the eccentricity and declination of the motor shaft 1 and the pump shaft 2, respectively. The structure of the connecting portion shown here is a structure in which no eccentricity or declination occurs between the pump shaft 2 and the pump side coupling joint 4. In the case of a structure in which a declination occurs, the non-contact displacement gauges 5 are arranged at two locations in the axial direction of the pump shaft 2. Here, as the non-contact displacement meter 5, for example, an eddy current displacement meter or a laser displacement meter is used, but it is desirable to use a laser displacement meter which is not easily influenced by the magnetization characteristics of the shaft.

  As shown in FIG. 1, the motor side coupling joint 3 is provided with a reflective foil 21 for detecting the axial position of the rotating shaft, and a pulse voltage signal is received at the reflective foil 21 position by the photoelectric pulse meter 20. measure. By arranging the reflecting foils 21 uniformly at a plurality of locations in the circumferential direction of the motor side coupling joint 3, pulse signals are generated at equally spaced positions in the circumferential direction.

  The non-contact displacement meter 5 and the pulse meter 20 are connected to the displacement meter signal line 8, the pulse meter signal line 9, the amplifier 10 and the amplifier 11, respectively, and output voltage signals. Further, the signal is converted into a digital signal by the AD converter 12 and taken into the processing portion 40. The processing portion 40 includes shaft vibration processing means 14 for calculating the shaft runout amount at the circumferential position of the rotating shaft from the continuous shaft vibration signal, and the eccentricity and declination of the motor shaft 1 and the pump shaft 2 from each shaft runout amount. The eccentric declination calculating means 15 for calculating the direction and the amount of the detent, and the adjustment instructing means 16 for instructing the adjusting direction and the adjusting amount of the coupling joint when the decentering declination amount is an allowable value abnormality. The processing portion 40 includes an input means 17 for inputting information related to the installation positions of the non-contact displacement meter 5 and the pulse meter 20 necessary for the eccentricity declination calculating means 15, and a display means for displaying an input screen and an adjustment support screen. 18 is connected to recording means 19 for recording input information, measurement data, and calculation results.

  Here, the outline of the processing will be described with reference to the flow shown in FIG. That is, first, sensor position information is input (step S1). Next, shaft vibration recording is started (step S2). Next, the rotating shaft is turned manually (step S3). Next, axial vibration recording is terminated (step S4). Next, a pulse position is extracted from the result of axial vibration recording (step S5). Next, the eccentric angle is calculated (step S6). Here, a pass / fail determination is made (step S7), and if the decentering angle is equal to or smaller than an allowable value, the process ends. When the eccentric angle exceeds the allowable value, the adjustment direction is instructed (step S8), the adjustment operation is performed (step S9), and the operation from the start of shaft vibration recording (step S2) is repeated again.

  A processing method of the shaft vibration processing means 14 will be described with reference to FIGS. FIG. 5 shows an example in which the first reflecting foil 21 is arranged on the outer periphery of the motor shaft in 30 ° increments in the circumferential direction. When the rotating shaft is rotated manually, the first pulse signal 22 can be measured every time the rotating shaft rotates 30 ° by the first pulse meter 20a. The axial vibration data 23 at this time is also measured, and the axial vibration data 23 at the position where the first pulse signal 22 is generated becomes the axial vibration amount for every 30 ° in the circumferential direction. At this time, the reference point in the circumferential direction may be a position at which the rotation axis starts to be rotated, and one second reflection foil 21b is arranged in the circumferential direction of the rotation axis separately from the first reflection foil 21 described above. There is also a method of determining the reference position by measuring the second pulse signal 25 generated once for each rotation of the rotating shaft by the second pulse meter 20b.

  FIG. 7 shows a result of planarly displaying one rotation of the shaft runout amount of the extracted shaft runout extraction point 24. The reference circle 26 indicates a state in which the shaft runout is zero, and when the extracted shaft runout amount is displayed every 30 °, the shaft vibration data has the direction represented by the eccentricity vector 27 and The shaft runout is caused by the amount.

  In the dial gauge measurement, it was necessary to fix the rotating shaft in the measuring direction, read the shaft runout, rotate and fix in the next direction, and read the shaft runout. By rotating the shaft by one turn, it is possible to measure the amount of shaft runout every 30 ° in the circumferential direction of the rotating shaft, and it is possible to shorten the measurement time and improve the measurement accuracy in the eccentric declination direction. In addition, since the shaft runout can be measured by manually rotating the rotating shaft without making the motor rotate at a constant speed, there is no need for motor start-up preparation, etc., and adjustment can be performed while making adjustments. The overall time can be shortened.

  With respect to the four shaft vibration data of the non-contact displacement meters 5a, 5b, 5d, and 5e, the above-described shaft vibration processing is performed, and four eccentric vectors 27 are calculated.

  A method for calculating the direction and amount of eccentricity and declination of the motor shaft 1 and the pump shaft 2 will be described with reference to FIG. Information on the measurement position is input on the input screen shown in FIG. The dimensional information necessary for calculating the eccentricity and the deflection angle is input. FIG. 8 shows four eccentric vectors 27 a, 27 b, 27 c, and 27 d displayed three-dimensionally with respect to the reference line 28. It means that the motor shaft 1 is inclined in the direction connecting AB and the pump shaft 2 is inclined in the CD direction. When the eccentric direction and the eccentric amount of the motor shaft 1 and the pump shaft 2 are values at the contact surface 42 where the motor side coupling joint and the pump side coupling joint are in contact, the points A and B are extrapolated to the contact surface 42. It is calculated from the point B ′ and the point C ′ obtained by extrapolating the point C and the point D to the contact surface 42. At this time, the inputted dimension information in the axial direction is used. Considering the motor shaft 1 as a reference, the direction of eccentricity and the amount of eccentricity are represented by a vector 29. Next, the declination direction and amount can be calculated from the angle and direction formed by the line segment AB and the line segment CD.

  From the calculated direction and amount of eccentricity and declination, when the amount of axial runout at the axial position used for determining the quality of the adjustment is within an allowable value, the adjustment operation ends. If the value is equal to or greater than the allowable value, the adjustment work is required again, and the adjustment instruction means 16 displays a screen for instructing the worker on the direction and amount for reducing the eccentricity and declination. An example of the screen is shown in FIG. It is an example of a screen for adjusting the current position 30 to the target position 32 by adjusting the direction and amount of the adjustment vector 31.

  FIG. 11 and FIG. 12 show an example of detecting by one non-contact displacement meter 5 as another method of detecting the axial circumferential position. This is an example in which a concavo-convex structure is arranged in increments of 30 ° on the motor side coupling joint. Here, there are one recess 35 for detecting the reference position and 11 protrusions 34 for detecting the circumferential position, and the shaft vibration is determined based on the second pulse signal 25 measured by the non-contact displacement meter 5. A shaft runout amount is extracted from the data 23.

  The installation location of the axial circumferential direction detection means may be a location other than the motor side coupling joint. Further, the generation intervals of the pulse signals 22 and 25 may be equal intervals, and the step may be reduced when more accuracy is required.

  In the present embodiment configured as described above, the eccentricity and the declination state of the connecting portion are measured by turning the rotating shaft without adjusting the rotating machine at a constant speed, and adjusted accurately and efficiently. It becomes possible.

[Second Embodiment]
FIG. 13 shows a case where the apparatus according to the second embodiment of the present invention is mounted on the motor shaft 108 of the motor 107 of the vertical pump motor. The distance to the motor shaft end face is accurately measured as a displacement by the laser beam 101 using the laser displacement meter 102. The laser displacement meter 102 is mounted on the XY stage 103 and moves on the shaft end face region to be measured. The outputs of the XY stage controller 106 and the laser displacement meter signal converter 104 are input to the personal computer 105 to output a three-dimensional shape of the end face as shown in FIG.

  FIG. 15 is a view of the lower side of the laser displacement meter 102 of this apparatus as viewed from below. The XY stage 103 includes an X stage 113 and a Y stage 112. A Y stage 112 is mounted on the X stage 113, and a laser displacement meter 102 is mounted thereon.

  16 shows an upright section, and FIG. 17 shows an AA section of FIG. The laser displacement meter 102 is attached to the Y stage 112 by an attachment jig 117, and the X stage 113 is attached to the lower plate 116 via the deflection angle adjusting plate 114. The lower plate 116 is attached with an upper plate 115 via a tie rod 111. The upper plate 115 is provided with a spacer ring installation surface of a rotating shaft to be measured. The deflection angle adjusting plate 114 adjusts the deflection angle so as to be parallel to the spacer ring installation surface with an adjusting screw (not shown).

  FIG. 18 shows an example of the shape of the tie rod 111. By using a rod that is precisely finished only at the joint between the upper plate 115 and the lower plate 116, it is possible to provide a device that allows the upper and lower plates to be assembled in parallel with high precision.

  FIG. 19 shows an elevational sectional view of an example of a state in which an apparatus is actually attached and measured. The device lifting mechanism 124 is installed on the end surface protective cover 125 on the end surface of the pump shaft 126, and the device of the present invention is mounted thereon and inserted into the motor shaft 108. Thereafter, the split ring 122 and the spacer ring 121 are attached to the motor shaft. The apparatus is lowered by the apparatus lifting mechanism 124 and installed on the upper surface of the spacer ring 121. In this way, the apparatus can be easily and accurately installed. Further, at the time of end face correction work, the apparatus lifting mechanism 124 can be used to remove the apparatus, and the end face correction work can be performed using the vacant space. At this time, in order to improve the apparatus installation accuracy, the ring and the apparatus should be installed in a fixed direction.

  According to the present embodiment configured as described above, the shape of the shaft end face can be quantitatively displayed in three dimensions, so that the end face can be easily corrected. Measurement accuracy is improved because the device attached to the shaft does not need to be moved by a person. Since the measuring device is merely placed on the split ring groove or the end face of the split ring 122 or the upper face of the end face of the spacer ring 121 supported by the split ring 122, the installation work is easy, and the upper face of the end face of the spacer ring 121 is Since it is manufactured with high accuracy and the surface is not damaged, it can be measured with high accuracy by using the surface as a reference.

  In addition, when the pump is operated at atmospheric pressure, a motor coupling joint is installed on the upper surface of the end surface of the spacer ring 121, and the spacer coupling joint is coupled. Since the time has the same shaft deflection angle, adjustment can be made so that the vibration value does not change depending on the operating conditions.

  Further, an upper plate 115 installed on the end face of the spacer ring 121 supported by the split ring 122 on the shaft end face and a lower plate 116 to which the deflection angle adjusting plate 114 on which the XY stage 103 and the like are mounted are attached. It is good to connect with a tie rod 111. According to this embodiment, the upper plate 115 and the lower plate 116 are connected by three or more tie rods 111, so that the weight of the apparatus can be reduced. Further, by using the deflection angle adjusting plate 114 on which the XY stage 103 is mounted, the XY stage 103 can be adjusted and installed with accuracy using an adjustment screw or the like in parallel with the installation surface.

  In addition, as shown in FIG. 20, the installation is made upside down on the installation table, and the split ring 122 and the spacer ring 121 on the shaft end surface to be measured are attached, so that the parallelism of the two upper and lower planes is accurately manufactured. A declination adjusting plate on which an XY stage 103 and the like are mounted so that the declination of the declination inspection plate 131 is measured by measuring the declination of the declination inspection plate 131. 114 can be adjusted using an adjustment screw (not shown) or the like. In this way, since the split ring 122 and the spacer ring 121 on the shaft end surface to be measured are mounted and measured, the installation direction of the spacer ring 121 with respect to the split ring 122 is made the same, and the deflection angle adjusting plate If 114 is adjusted using an adjustment screw or the like, the XY stage can be installed in parallel with the installation surface with high accuracy.

  Also, if the installation direction of the spacer ring is recorded, the deviation angle at atmospheric pressure is measured, so if you want to correct the deviation angle during high pressure operation, consider the installation orientation This can be done by correcting the deviation angle of the shaft end face. If this method is used, calibration of the measuring device can be performed on-site, so there is no need to worry about distortion of the measuring device during transportation, and the parallelism of the upper and lower two planes is accurately manufactured. Since only 131 is prepared, calibration costs are not required and calibration is easy. As described above, the deviation angle and the shape of the shaft end surface of the rotating shaft can be measured in three dimensions with an accuracy of several μm, and the correction amount can be displayed. It can be close to zero, and vibration due to the shaft deflection angle of the rotating machine can be reduced.

1 is a block diagram including a schematic elevation view showing a first embodiment of a rotary shaft coupling joint adjustment support device according to the present invention. It is a figure which shows the state which attached the motor shaft fixing jig in the 1st Embodiment of this invention, Comprising: (a) is a front view, (b) is a side view. It is a figure which shows the state which attached the sensor jig to the motor shaft fixing jig in the 1st Embodiment of this invention, (a) is a front view, (b) is a side view. The flowchart which shows the process sequence of the connection coupling adjustment in the 1st Embodiment of this invention. It is a figure which shows the structure of the axial circumferential direction position detection means in the 1st Embodiment of this invention, Comprising: (a) is a plane sectional view, (b) is a front view. It is a figure which shows the extraction method of the axial run-out amount in the 1st Embodiment of this invention, Comprising: (a) is a time chart of axial vibration data, (b) is a time chart of a 1st pulse signal, (c). Is a time chart of the second pulse signal. The figure which shows the extraction result of the axial run-out amount in the 1st Embodiment of this invention. The perspective view which shows the calculation method of the direction and quantity of decentration and declination in the 1st Embodiment of this invention. The figure which shows an example of the positional information input screen in the 1st Embodiment of this invention. The figure which shows an example of the adjustment assistance screen in the 1st Embodiment of this invention. It is a figure which shows the example different from FIG. 5 of the structure of the axial circumferential direction position detection means in the 1st Embodiment of this invention, (a) is a plane sectional view, (b) is a front view, (c) Is a schematic enlarged cross-sectional view of an uneven structure. It is a figure which shows the extraction method of the axial run-out amount using the axial periphery direction position detection means of FIG. 11, Comprising: (a) is a time chart of axial vibration data, (b) is a time chart of a 1st pulse signal. The typical block diagram containing the elevation which shows 2nd Embodiment of the rotating shaft coupling joint adjustment assistance apparatus which concerns on this invention. The example of the three-dimensional shape figure of the rotating shaft end surface measured by the 2nd Embodiment of this invention. The typical block diagram containing the top view of the rotating shaft coupling joint adjustment assistance apparatus of the 2nd Embodiment of this invention. The elevation sectional view of the rotating shaft coupling joint adjustment support device of a 2nd embodiment of the present invention. FIG. 17 is a cross-sectional plan view taken along line AA in FIG. 16. The elevation view which takes out and shows one tie rod in the rotating shaft coupling joint adjustment assistance apparatus of the 2nd Embodiment of this invention. The elevation sectional view showing the state where the rotating shaft coupling joint adjustment support device of the 2nd embodiment of the present invention is actually attached and measured. The elevation sectional view of the device at the time of declination calibration in the rotating shaft coupling joint adjustment method of a 2nd embodiment of the present invention. The typical elevation sectional view in the conventional rotating shaft coupling joint adjustment method.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Motor shaft (rotary shaft), 2 ... Pump shaft (rotary shaft), 3 ... Motor side coupling joint, 4 ... Pump side coupling joint, 5, 5a-5e ... Non-contact displacement meter (shaft vibration measuring means), 6 , 7 ... Sensor jig, 8 ... Displacement meter signal line, 9 ... Pulse meter signal line, 10, 11 ... Amplifier, 12 ... AD converter, 14 ... Axial vibration processing means, 15 ... Eccentric deviation calculation means, 16 ... adjustment instruction means, 17 ... input means, 18 ... display means, 19 ... recording means, 20, 20a, 20b ... pulse meter (circumferential position measurement means), 21,21b ... reflective foil (circumferential position detection means), 22, 25 ... Pulse signal, 23 ... Shaft vibration data, 24 ... Shaft deflection, 26 ... Reference circle, 27, 27a to 27d ... Eccentric vector, 29 ... Vector, 31 ... Adjustment vector, 32 ... Target position, 34 ... Convex part, 35 ... concave part, 36 ... motor shaft fixing jig, 37 ... solid Bolt 38 ... Motor shaft fixing bolt 39 ... Mounting plate 40 ... Processing part 42 ... Contact surface 101 ... Laser light 102 ... Laser displacement meter 103 ... XY stage 104 ... Laser displacement meter signal converter 105 ... Personal computer, 106 ... XY stage controller, 107 ... Motor, 108 ... Motor shaft, 111 ... Tie rod, 112 ... Y stage, 113 ... X stage, 114 ... Deviation adjustment plate, 115 ... Upper plate, 116 ... Lower plate, 121 ... Spacer ring, 122 ... Split ring, 124 ... Device lifting mechanism, 125 ... End face protective cover, 126 ... Pump shaft, 131 ... Declination inspection plate

Claims (10)

In the rotary shaft coupling joint adjustment support device for adjusting the coupling state of the coupling joint that couples the two rotary shafts,
Shaft vibration measuring means disposed at a plurality of locations in the axial direction of the rotating shaft;
A plurality of circumferential position detectors arranged at equal intervals in the circumferential direction of the rotating shaft;
A circumferential position measuring means for measuring the circumferential position by a signal obtained from the circumferential position detecting means;
Axial vibration processing means for calculating the amount of axial vibration at each position in the circumferential direction of the rotating shaft based on the signal measured by the circumferential position measuring means and the axial vibration amount signal measured by the axial vibration measuring means. When,
Eccentric declination calculating means for calculating the direction and amount of decentering and declination based on the information on the installation positions of the axial vibration measuring means and the circumferential position measuring means and the axial runout amount calculated by the axial vibration processing means;
A rotary shaft coupling joint adjustment support device comprising:   An adjustment instructing means for instructing an operator on an adjustment direction and an adjustment amount of the coupling joint of the rotating shaft based on the eccentricity and the direction and amount of the eccentricity calculated by the eccentricity deviation angle calculating means; The rotary shaft coupling joint adjustment support device according to claim 1, wherein:   2. The rotary shaft coupling joint adjustment support device according to claim 1, wherein when the rotary shaft is rotated, the circumferential position measurement unit measures the circumferential position as a voltage signal.   2. The rotating shaft according to claim 1, wherein at least one of the shaft vibration measuring means and the circumferential position measuring means is fixed or positioned by using a bolt hole or a fitting structure in the rotating machine. Connecting joint adjustment support device. In the rotating shaft coupling joint adjusting method for adjusting the coupling state of the coupling joint that couples two rotating shafts,
While rotating the rotating shaft, the shaft vibration is measured at a plurality of positions in the axial direction, and the circumferential position is measured by a signal obtained from a circumferential position detector arranged at equal intervals in the circumferential direction of the rotating shaft. Steps,
A shaft vibration processing step for calculating an amount of shaft runout at each position in the circumferential direction of the rotating shaft based on information on the circumferential position and shaft vibration;
Eccentric declination calculating step for calculating the direction and amount of the eccentricity and declination of the rotating shaft based on the information on the circumferential position obtained by the measurement step and the axial runout amount calculated by the axial vibration processing step. When,
A rotating shaft coupling joint adjustment method comprising: In the rotary shaft coupling joint adjustment support device for adjusting the coupling state of the coupling joint that couples the two rotary shafts,
A displacement meter attached to the rotating shaft and arranged to face the end surface of the rotating shaft and capable of measuring the distance to the facing portion of the end surface;
A displacement mechanism that moves the displacement meter substantially parallel to the end surface while facing the end surface, and is configured to measure the perpendicularity or shape of the end surface by the displacement meter and the movement mechanism. A rotating shaft coupling joint adjustment support device.   The said moving mechanism is attached to either the outer periphery of the side surface of the said rotating shaft, the groove | channel on the side surface of a rotating shaft, or the end surface of the jig | tool attached to the said groove | channel. Rotation shaft coupling joint adjustment support device. An upper plate installed on an end face of a jig attached to a groove on a side surface of the rotating shaft, and a lower plate to which a deflection angle adjusting plate connected to the upper plate is attached;
The moving mechanism is attached to the deflection angle adjusting plate;
The rotary shaft coupling joint adjustment support device according to claim 6. In the rotating shaft coupling joint adjusting method for adjusting the coupling state of the coupling joint that couples the two rotating shafts,
A measurement step of measuring a distance between the portion of the end surface and the displacement meter by causing a displacement meter to face a part of the end surface of the rotation shaft;
A moving step of moving the displacement meter substantially parallel to the end surface so that the displacement meter faces the other part of the end surface;
To measure the squareness or shape of the end face, and adjust the rotating shaft coupling joint. Before measuring the squareness or shape of the end face,
In a state in which the perpendicularity or shape of the end face is measured and in an upside down state, a jig attached to the groove on the side surface of the rotating shaft is attached to the upper plate, and the upper plate is coupled to the lower plate. The displacement mechanism is attached to the lower plate via the deflection angle adjusting plate, the displacement meter is fixed to the displacement mechanism, and the deflection angle inspection with the upper and lower surfaces parallel to each other on the jig. A measuring plate is used to measure the deflection angle of the deflection angle inspection plate using the moving mechanism and the displacement meter, and the inclination of the deflection angle adjusting plate is adjusted so that the deflection angle becomes sufficiently small. ,
The rotating shaft coupling joint adjusting method according to claim 9.

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