CN216012082U - Shaft coupling alignment gauge stand and rotating equipment shafting alignment device - Google Patents

Abstract

A shaft system alignment device for a coupler alignment gauge stand and a rotary device comprises a first telescopic arm and a second telescopic arm which are both in a lath-shaped structure, wherein the first telescopic arm comprises a first connecting section and a first extending section from bottom to top, and the first connecting section is slidably arranged at the free end of a gauge rod; the second telescopic arm comprises a second connecting section and a second extending section from top to bottom, and the second connecting section is arranged at the free end of the meter rod in a sliding manner; the shoulder arm comprises a third connecting section and a third extending section which are perpendicular to each other, the third connecting section is parallel to the first telescopic arm and the second telescopic arm and is in sliding connection with the first extending section, and the third extending section extends towards the direction far away from the gauge rod. Through the reasonable setting to component structure, according to operating condition, the first linkage segment of slip regulation, second linkage segment and third linkage segment realize the holistic flexible of table frame, use one set of table frame to cover whole measuring range, solve the poor problem of traditional shafting alignment frock commonality, labour saving and time saving improves operating efficiency and measurement accuracy.

Description

Shaft coupling alignment gauge stand and rotating equipment shafting alignment device

Technical Field

The utility model belongs to the technical field of mechanical auxiliary tools, and particularly relates to a coupler alignment gauge stand and a rotating equipment shafting alignment device.

Background

The rotating equipment for modern large-scale industrial process is usually composed of a plurality of single machines, and the rotors of the single machines are connected by using couplings to form a shaft system for transmitting motion and torque. In the assembly and field installation stages, the axes of the single machines need to be measured, the misalignment of the shafting is eliminated, the abnormal vibration of the machine set is avoided, the running state of the equipment is prevented from being endangered, and the shafting alignment tool used in the meter measurement method is a measuring device designed for the purpose.

During field installation, a manufacturer can give a cold state (namely, installation state) alignment curve of the shaft system according to the characteristics of each single machine, wherein the shaft system is formed by connecting the rotors of each single machine through a coupler. The traditional shafting alignment tool (as shown in fig. 5, comprising a gauge stand 2, a gauge rod 3 and a gauge stand 1 which are coaxially arranged, and 3 dial gauges arranged on measuring points arranged on the gauge stand 1) is used for obtaining and adjusting the actual deviation value of the shafting center through measurement and comparison so as to meet the design requirements. As shown in fig. 6, the conventional meter frame 1 is integrated, the measuring points arranged on the meter frame 1 must be matched with the sizes of the measured end surface and the measured outer diameter one by one, the positions of the measuring points cannot be adjusted after being processed according to the design requirement, and the universality is poor; meanwhile, the axial length of a shafting alignment tool used by a large-scale unit is generally 600-1000 mm, deflection measurement deviation of 0.10-0.15 mm exists, and the influence of deflection on the measurement deviation is not considered in the prior art.

Disclosure of Invention

In view of the above problems, the present invention aims to provide a coupling alignment gauge stand and a rotary device shafting alignment apparatus, through reasonable arrangement of component structures, the whole gauge stand can realize the expansion of the whole dimension of the gauge stand by slidably adjusting the first connection section, the second connection section and the third connection section according to actual working conditions, and a set of gauge stand can fully cover the measurement range, thereby solving the problem of poor universality of the conventional shafting alignment tool, saving time and labor, and improving the operation efficiency and the measurement precision.

In order to achieve the purpose, the technical scheme adopted by the utility model comprises the following steps:

a coupler alignment meter stand comprises a first telescopic arm and a second telescopic arm which are both in a lath-shaped structure, wherein the first telescopic arm comprises a first connecting section and a first extending section from bottom to top, and the first connecting section is slidably arranged at the free end of a meter rod; the second telescopic arm comprises a second connecting section and a second extending section from top to bottom, and the second connecting section is arranged at the free end of the meter rod in a sliding manner; the first telescopic arm and the second telescopic arm are parallel to each other, and the first telescopic arm and the second telescopic arm are coplanar and perpendicular to the axis of the watch rod; the shoulder arm comprises a third connecting section and a third extending section which are perpendicular to each other, the third connecting section is parallel to the first telescopic arm and the second telescopic arm and is in sliding connection with the first extending section, and the third extending section extends towards the direction far away from the gauge rod.

Preferably, the axle center of the free end of the meter rod is provided with an installation table, and the first connecting section and the second connecting section are movably arranged on the installation table.

Preferably, the first connecting section is provided with a first strip hole parallel to the first connecting section, and the fixing shaft penetrates through the first strip hole and fixes the first connecting section on the mounting table.

Preferably, the second connecting section is provided with a second elongated hole parallel to the second connecting section, and the second connecting section further comprises a fixing shaft which penetrates through the second elongated hole and fixes the second connecting section on the mounting table.

Preferably, the third connecting section is provided with a third elongated hole parallel to the third connecting section, and the third connecting section further comprises a fixing shaft which passes through the third elongated hole and fixes the third connecting section on the first extending section.

Preferably, opposite sides of the first connecting section and the second connecting section are in contact with each other, and the opposite sides of the first connecting section and the second connecting section are perpendicular to and intersect with the axis of the watch bar.

A shafting alignment device of rotary equipment comprises a gauge stand and a gauge rod which are coaxially arranged, and further comprises a gauge stand arranged on the gauge rod, wherein the gauge stand is a coupler alignment gauge stand disclosed by the utility model; the first axial dial indicator is arranged on the first extension section; the second axial dial indicator is arranged on the second extension section; and the radial dial indicator is arranged on the third extension section.

Preferably, the first axial dial indicator mounting point and the second axial dial indicator mounting point are respectively equal in vertical distance to the axis of the indicator rod, and a connecting line of the first axial dial indicator mounting point and the second axial dial indicator mounting point is perpendicular to and intersected with the axis of the indicator rod.

Preferably, the gauge stand is coaxially connected with the driving shaft of the coupler, the vertical distance between the mounting point of the first axial dial indicator and the mounting point of the second axial dial indicator and the free end of the driven shaft of the coupler is less than or equal to 10mm, and the vertical distance between the radial dial indicator and the outer side wall of the driven shaft of the coupler is less than or equal to 10 mm.

Furthermore, the dial indicator is arranged on the indicator frame, and the vertical distance between the dial indicator and the axis of the indicator seat is less than or equal to 30 mm.

Compared with the prior art, the utility model has the advantages that:

(1) the utility model provides a coupler alignment table frame, through to the reasonable setting of part structure, whole table frame can be according to operating condition, through first linkage segment of sliding adjustment, second linkage segment and third linkage segment, realizes the flexible of table frame overall dimension, uses one set of table frame can the full coverage measuring range, has solved the poor problem of traditional shafting alignment frock commonality, and labour saving and time saving improves operating efficiency and measurement accuracy.

(2) A shaft system alignment device of a shaft coupling alignment gauge stand and a rotary device is characterized in that a first telescopic arm and a second telescopic arm are oppositely extended or shortened through reasonable arrangement of component structures, so that a first axial dial indicator and a second axial dial indicator can be adjusted to appropriate end surface measuring point positions at positions close to an outer circle pointing to a driven shaft, and processing elements such as a boss, a screw hole, a unthreaded hole and the like which influence measurement are avoided; after the measuring point positions of the main telescopic arm and the auxiliary telescopic arm are determined, the extension or the shortening of the shoulder arm can enable the radial dial indicator to be adjusted to the proper radial measuring point position; overall structure's setting uses one set of table frame can the full coverage measuring range, has solved the poor problem of traditional shafting alignment frock commonality, and labour saving and time saving improves operating efficiency and measurement accuracy.

(3) Before the alignment device is used, a lever dial indicator is installed, a permanent mark is marked on a measured deflection value on a gauge stand, during actual measurement, a deflection deviation is subtracted after a vertical direction shafting alignment deviation value is obtained, and simultaneously, a measurement error is calibrated once, so that the error requirements of all detection works in a measured range can be met, and the measurement accuracy is improved.

(4) The utility model provides a coupler alignment table frame and rotating equipment shafting aligning device, through to the reasonable setting of part structure, to being surveyed shaft coupling (driven shaft) external diameter in 220 ~ 420 (90% specification range commonly used), use one set of frock can the full coverage measuring range, improve the operating efficiency.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic structural view of a shafting alignment device of a rotating apparatus according to the present invention;

FIG. 2 is a schematic view of a coupler alignment gauge stand and structure of the present invention;

FIG. 3 is a schematic view of the first and second telescoping arms of FIG. 2;

FIG. 4 is a schematic view of the shoulder arm of FIG. 2;

FIG. 5 is a schematic structural view of a conventional shafting alignment fixture;

fig. 6 is a schematic structural view of the watch frame in fig. 5.

The reference numerals in the figures denote:

1, a watch frame; 1-1 first telescopic arm, 1-1a first connecting section, 1-1b first extending section, 1-10 first long hole, 1-2 second telescopic arm, 1-2a second connecting section, 1-2b second extending section, 1-20 second long hole, 1-3 shoulder arm, 1-2a third connecting section, 1-2b third extending section, 1-30 third long hole and 1-00 fixing shaft; a W1 first axial dial indicator, a W2 second axial dial indicator, a W3 radial dial indicator, a Q lever dial indicator; 2, a gauge stand; 3, a meter rod; 3-1, mounting a platform; 4 coupler, 4-1 driving shaft and 4-2 driven shaft;

Detailed Description

The present invention will now be described in further detail with reference to the attached drawings, which are illustrative, but not limiting, of the present invention.

As used herein, directional terminology, such as "axis," "upper" and "lower," is intended to correspond to a particular direction on the page of the drawings or to a corresponding direction in space as illustrated in the drawings;

the rotating equipment mentioned herein refers to equipment rotating along its axis, including but not limited to centrifugal/axial flow compressors, blast furnace gas turbines, etc., and generally consists of a plurality of single machines, and the rotors of the single machines are connected by a coupling 4 to form a shaft system for transmitting motion and torque. Wherein, the coupling 4 comprises a driving shaft 4-1 and a driven shaft 4-2; the rotor is a main rotating member in a power machine and a working machine as an energy transmission mechanism of a device such as a turbo compressor.

Example 1

A coupler alignment meter rack comprises a first telescopic arm 1-1 and a second telescopic arm 1-2 which are both in a lath-shaped structure, wherein the first telescopic arm 1-1 comprises a first connecting section 1-1a and a first extending section 1-1b from bottom to top, and the first connecting section 1-1a is arranged at the free end of a meter rod 3 in a sliding manner; the second telescopic arm 1-2 comprises a second connecting section 1-2a and a second extending section 1-2b from top to bottom, and the second connecting section 1-2a is arranged at the free end of the meter rod 3 in a sliding manner; the first telescopic arm 1-1 and the second telescopic arm 1-2 are parallel to each other, and the first telescopic arm 1-1 and the second telescopic arm 1-2 are coplanar and vertical to the axis of the watch rod 3; the shoulder arm 1-3 comprises a third connecting section 1-3a and a third extending section 1-3b which are perpendicular to each other, the third connecting section 1-3a is parallel to the first telescopic arm 1-1 and the second telescopic arm 1-2, the third connecting section 1-3a is connected with the first extending section 1-1b in a sliding mode, and the third extending section 1-3b extends in the direction far away from the meter rod 3;

the function is as follows: through the arrangement of the first telescopic arm 1-1, the second telescopic arm 1-2 and the shoulder arm 1-3, the whole meter frame can realize the expansion of the whole size of the meter frame by adjusting the first connecting section 1-1a, the second connecting section 1-2a and the third connecting section 1-3a in a sliding manner according to the actual working condition, the problem that the measuring points on the traditional meter frame cannot be adjusted after being set and processed is solved, the universality is improved, and the time and the labor are saved.

Specifically, an installation table 3-1 is arranged at the axis of the free end of the meter rod 3, and the first connecting section 1-1a and the second connecting section 1-2a are movably arranged on the installation table 3-1;

the function is as follows: the mounting table 3-1 is used for movably arranging the first connecting section 1-1a and the second connecting section 1-2a on the mounting table 3-1, so that the first connecting section 1-1a and the second connecting section 1-2a are prevented from wearing the gauge rod 3 during size sliding adjustment.

Specifically, the first connecting section 1-1a is provided with a first long hole 1-10 parallel to the first connecting section 1-1a, and a fixing shaft 1-00 which passes through the first long hole 1-10 and fixes the first connecting section 1-1a on the mounting table 3-1;

the function is as follows: when the first telescopic arm 1-1 needs to be adjusted, the fixing shaft 1-00 is loosened, the first long hole 1-10 is slid to a proper position along the fixing shaft 1-00, and then the fixing shaft 1-00 is fastened again, so that the first telescopic arm 1-1 is fixed.

Among them, the fixing shaft 1-00 is preferably a fixing bolt.

Specifically, the second connecting section 1-2a is provided with a second long hole 1-20 parallel to the second connecting section 1-2a, and a fixing shaft 1-00 which passes through the second long hole 1-20 and fixes the second connecting section 1-2a on the mounting table 3-1;

the function is as follows: when the second telescopic arm 1-2 needs to be adjusted, the fixing shaft 1-00 is loosened, the second long hole 1-20 is slid to a proper position along the fixing shaft 1-00, and then the fixing shaft 1-00 is fastened again, so that the second telescopic arm 1-2 is fixed.

Specifically, the third connecting section 1-3a is provided with a third long hole 1-30 parallel to the third connecting section 1-3a, and further comprises a fixing shaft 1-00 which passes through the third long hole 1-30 and fixes the third connecting section 1-3a on the first extending section 1-1 b;

the function is as follows: when the shoulder arm 1-3 needs to be adjusted, the fixing shaft 1-00 is loosened, the third long hole 1-30 is slid to a proper position along the fixing shaft 1-00, and then the fixing shaft 1-00 is fastened again, so that the shoulder arm 1-3 is fixed.

Specifically, opposite sides of the first connecting section 1-1a and the second connecting section 1-2a are in contact with each other, and opposite sides of the first connecting section 1-1a and the second connecting section 1-2a are perpendicular to and intersect with an axis of the meter lever 3.

Example 2

A shafting alignment device of rotary equipment comprises a gauge stand 2 and a gauge rod 3 which are coaxially arranged, and further comprises a gauge stand 1 arranged on the gauge rod 3, wherein the gauge stand 1 is a coupler alignment gauge stand disclosed by the utility model; the first axial dial indicator W1 is arranged on the first extension section 1-1 b; the second axial dial indicator W2 is arranged on the second extension section 1-2 b; the device also comprises a radial dial indicator W3 arranged on the third extension section 1-3 b;

the function is as follows: the gauge stand 2, the gauge rod 3, the gauge frame 1 and three dial gauges arranged on the gauge frame 1 are matched to realize alignment of a rotary equipment shaft system (a driving shaft 4-1 and a driven shaft 4-2 of the coupler 4), so that alignment of two rotary equipment shaft systems to be coaxially connected is realized, wherein a first axial dial gauge W1 and a second axial dial gauge W2 are used for relative axial (end face) deviation of the driven shaft 4-2, and a radial dial gauge W3 is used for measuring relative radial deviation of the coupler; the overall structure is arranged, the first connecting section 1-1a, the second connecting section 1-2a and the third connecting section 1-3a are adjusted in a sliding mode, the overall size of the gauge stand is expanded, the measuring range can be fully covered by using one set of gauge stand 1, the problem that the universality of a traditional shafting alignment tool is poor is solved, time and labor are saved, and the operating efficiency and the measuring precision are improved.

Installation process before use: firstly, a gauge stand 2 is coaxially connected to the end face of a driving shaft 4-1 by using a bolt, and then a gauge rod 3 is coaxially connected to the free end of the gauge stand 2 by using a bolt; secondly, a first telescopic arm 1-1, a second telescopic arm 1-2 and a shoulder arm 1-3 of the watch frame 1 are sequentially fixed at the free end of a watch rod 3 through a plurality of fixing shafts 1-00, and the first telescopic arm 1-1 and the second telescopic arm 1-2 are adjusted to oppositely extend or shorten according to the radial section size of a driven shaft 4-2, so that a first axial dial indicator W1 and a second axial dial indicator W2 can be adjusted to appropriate end surface measuring point positions at the position close to the outer circle pointing to the driven shaft 4-2 (a coupler to be measured), and processing elements such as a boss, a screw hole, a unthreaded hole and the like which influence measurement are avoided; thirdly, after the measuring point positions of the first telescopic arm 1-1 and the second telescopic arm 1-2 are determined, the extension or the contraction of the shoulder arm 1-3 can enable the radial dial indicator W3 to be adjusted to be at an appropriate radial measuring point position according to the radial section size of the driven shaft 4-2; finally, the length of the gauge rod 3 is adjusted in the axial direction so as to adapt to the distance between the driving shaft 4-1 and the driven shaft 4-2 of different couplers.

When the shafting alignment device is used, the driving shaft 4-1 rotates 360 degrees along the axis of the driving shaft 4-1, so that the shafting alignment device is driven to axially rotate 360 degrees, three dial indicator readings are recorded every 90 degrees (wherein, a first axial dial indicator W1 and a second axial dial indicator W2 are used for the relative axial deviation of the driven shaft 4-2, and a radial dial indicator W3 is used for measuring the relative radial deviation of the driven shaft 4-2), the four readings are processed, the horizontal and vertical relative deviation values of the driving shaft 4-1 and the driven shaft 4-2 are respectively obtained through the conventional similar triangle operation method, and the deviation of the driven shaft 4-2 and the rotating equipment which is coaxially connected with the driving shaft 4-2 is correspondingly adjusted; after adjustment, the driving shaft 4-1 rotates 360 degrees along the axis, three dial indicator readings, relative deviation values and deviation correction are recorded every 90 degrees in the process of rotating the driving shaft 4-1 again until the radial tolerance is less than or equal to +/-0.02 mm and the end face tolerance is less than or equal to +/-0.03 mm, and the deviation of the curve from alignment is achieved in DL/T5210 electric power construction acceptance and evaluation. After alignment is completed, the axial length of the gauge rod 3 is adjusted and shortened, and the gauge stand 1, the gauge rod 3 and the gauge stand 2 are sequentially detached.

Specifically, the vertical distances from the mounting point of the first axial dial indicator W1 to the axis of the indicator rod 3 are equal to the vertical distances from the mounting point of the second axial dial indicator W2 to the axis of the indicator rod 3, and the connecting line of the mounting point of the first axial dial indicator W1 to the mounting point of the second axial dial indicator W2 is perpendicular to and intersects with the axis of the indicator rod 3;

the effect is, the setting of first axial percentage table W1 and second axial percentage table W2 mounting point to improve alignment accuracy.

Wherein, the mounting point of the first axial dial indicator W1 and the mounting point of the second axial dial indicator W2 are the measuring points of the two axial dial indicators.

Specifically, the gauge stand 2 is coaxially connected with a driving shaft 4-1 of the coupler 4, the vertical distance between the mounting point of the first axial dial indicator W1 and the mounting point of the second axial dial indicator W2 and the free end of the driven shaft 4-2 is less than or equal to 10mm, and the vertical distance between the radial dial indicator W3 and the outer side wall of the driven shaft 4-2 is less than or equal to 10 mm;

the function is as follows: so as to ensure that the distance between each dial indicator and the specific measuring part of the driven shaft 4-2 is within the measuring range of each dial indicator.

Specifically, the dial indicator comprises a lever dial indicator Q arranged on the gauge stand 1, wherein the vertical distance between the lever dial indicator Q and the axis of the gauge stand 2 is less than or equal to 30mm, and preferably 10 mm;

the function is as follows: the lever dial indicator Q is used for measuring the deflection error of the alignment device and improving the measurement precision;

before the alignment device is used, a lever dial indicator is installed, a permanent mark is marked on the gauge stand 2 for the measured deflection value, during actual measurement, deflection deviation is subtracted after a vertical direction shaft system alignment deviation value comes out, and meanwhile, a measurement error is calibrated once, so that the error requirements of all detection works in a measured range can be met.

Wherein, the preferred range of the lever dial indicator Q is 0^～0.8mm and a division value of 0.01 mm.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of the various embodiments of the present disclosure can be made, and the same should be considered as the inventive content of the present disclosure, as long as the combination does not depart from the spirit of the present disclosure.

Claims (10)

1. The coupler alignment meter frame is characterized by comprising a first telescopic arm (1-1) and a second telescopic arm (1-2) which are both of a lath-shaped structure, wherein the first telescopic arm (1-1) comprises a first connecting section (1-1a) and a first extending section (1-1b) from bottom to top, and the first connecting section (1-1a) is arranged at the free end of a meter rod (3) in a sliding manner;

the second telescopic arm (1-2) comprises a second connecting section (1-2a) and a second extending section (1-2b) from top to bottom, and the second connecting section (1-2a) is arranged at the free end of the meter rod (3) in a sliding manner;

the first telescopic arm (1-1) and the second telescopic arm (1-2) are parallel to each other, and the first telescopic arm (1-1) and the second telescopic arm (1-2) are coplanar and perpendicular to the axis of the watch rod (3);

the novel wrist measurement instrument is characterized by further comprising a shoulder arm (1-3), wherein the shoulder arm (1-3) comprises a third connecting section (1-3a) and a third extending section (1-3b), the third connecting section (1-3a) is perpendicular to each other, the third connecting section (1-3a) is parallel to the first telescopic arm (1-1) and the second telescopic arm (1-2), the third connecting section (1-3a) is connected with the first extending section (1-1b) in a sliding mode, and the third extending section (1-3b) extends in the direction far away from the instrument bar (3).

2. The shaft coupling alignment meter stand according to claim 1, wherein the free end axis of the meter bar (3) is provided with a mounting table (3-1), and the first connecting section (1-1a) and the second connecting section (1-2a) are movably arranged on the mounting table (3-1).

3. Coupler alignment meter frame according to claim 2, characterized in that the first connection section (1-1a) is provided with a first elongated hole (1-10) parallel to the first connection section (1-1a), and further comprising a fixing shaft (1-00) passing through the first elongated hole (1-10) and fixing the first connection section (1-1a) on the mounting table (3-1).

4. Coupler alignment meter frame according to claim 2, characterized in that the second connection section (1-2a) is provided with a second elongated hole (1-20) parallel to the second connection section (1-2a), and further comprising a fixing shaft (1-00) passing through the second elongated hole (1-20) and fixing the second connection section (1-2a) on the mounting table (3-1).

5. Coupler alignment meter frame according to claim 2, characterized in that the third connection section (1-3a) is provided with a third elongated hole (1-30) parallel to the third connection section (1-3a), and further comprising a fixing shaft (1-00) passing through the third elongated hole (1-30) and fixing the third connection section (1-3a) to the first extension section (1-1 b).

6. Coupler alignment meter stand according to any one of claims 1 to 5, characterized in that the opposite sides of the first (1-1a) and second (1-2a) connection sections are in contact with each other and the opposite sides of the first (1-1a) and second (1-2a) connection sections are perpendicular to and intersect the axis of the meter bar (3).

7. A shafting alignment device of rotary equipment comprises a gauge stand (2) and a gauge rod (3) which are coaxially arranged, and is characterized by further comprising a gauge stand (1) arranged on the gauge rod (3), wherein the gauge stand (1) is the shaft coupling alignment gauge stand according to any one of claims 1 to 6;

the first axial dial indicator (W1) is arranged on the first extension section (1-1 b);

the second axial dial indicator (W2) is arranged on the second extension section (1-2 b);

and a radial dial indicator (W3) arranged on the third extension (1-3 b).

8. The rotating equipment shafting alignment device as claimed in claim 7, wherein the vertical distances from the mounting point of the first axial dial indicator (W1) and the mounting point of the second axial dial indicator (W2) to the axis of the indicator rod (3) are equal, and the connecting line of the mounting point of the first axial dial indicator (W1) and the mounting point of the second axial dial indicator (W2) is perpendicular to and intersects with the axis of the indicator rod (3).

9. The rotating equipment shafting alignment device of claim 8, wherein the gauge stand (2) is coaxially connected with the driving shaft (4-1) of the coupling (4), the vertical distance between the mounting point of the first axial dial indicator (W1) and the mounting point of the second axial dial indicator (W2) and the free end of the driven shaft (4-2) of the coupling (4) is less than or equal to 10mm, and the vertical distance between the radial dial indicator (W3) and the outer side wall of the driven shaft (4-2) of the coupling (4) is less than or equal to 10 mm.

10. The rotating equipment shafting alignment device of any one of claims 7 to 9, further comprising a lever dial indicator (Q) arranged on the gauge stand (1), wherein the vertical distance between the lever dial indicator (Q) and the axis of the gauge stand (2) is less than or equal to 30 mm.

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