CN215114391U - Center alignment instrument for rotary machine shaft - Google Patents

Abstract

The utility model belongs to the technical field of center alignment, a change quick-witted axle center alignment appearance, first data collection station is fixed with second data collection station about shaft coupling radial symmetry, sends the signal to digital processor through first data transmitter and second data transmitter, and digital processor processes, shows the data that receive through digital signal receiver, has solved because the data of measuring, record are more, and the data is similar, causes mistake and error easily; staff with less work experience or low technical level are difficult to measure or record; more data conversion is needed, and errors are easily caused; the method is purely operated manually, so that data measurement or calculation errors are easily caused; the working efficiency is low; is not easy to operate in a limited space; fixed knot such as add and hold instrument, percentage table department causes not hard up easily, causes the inaccurate scheduling problem of measured data, has the range of application extensively, and data record, calculation are fast, and the degree of accuracy is high, easy and simple to handle's effect.

Description

Center alignment instrument for rotary machine shaft

Technical Field

The utility model relates to a center alignment technical field, concretely relates to change quick-witted axle center alignment appearance.

Background

At present, in the maintenance work of the rotating machine, the centering of a shaft coupling of the rotating machine shaft system is a very important work, which relates to whether the machine can run safely and normally, and is one of important conditions for ensuring the maintenance quality, if the centering is not important, the running condition of the maintained equipment is influenced, if the centering is not important, the economic and safe running of the unit is influenced, the centering work is treated with serious and responsible attitude, the maintenance quality of the rotating machine equipment is ensured, and the operation of the equipment is not influenced.

The purpose of shaft coupling alignment is to make the central lines of two shafts of a driving shaft and a driven shaft on the same straight line when a machine works, the alignment precision is related to whether the machine can normally run or not, and the shaft coupling alignment method is particularly important for the machine running at high speed, the absolutely accurate alignment of the two shafts is difficult to achieve, the requirement on the continuously running machine for always keeping accurate alignment is more difficult, and the deflection of uneven thermal expansion shafts of various parts, the uneven wear of bearings, the displacement generated by the machine, the uneven sinking of a foundation and the like are all reasons for not easily keeping the shafts aligned. Therefore, when designing the machine, the center of the two shafts is defined to have an allowable deviation value, which is also required when the coupling is installed, and from the assembly perspective, the larger the allowable deviation value of the center of the two shafts is, the easier the installation can meet the requirement as long as the coupling can transmit torque safely and reliably. However, from the mounting quality perspective, the smaller the deviation of the center lines of the two shafts is, the more accurate the centering is, the better the running condition of the machine is, and the longer the service life is.

At present, the coupler alignment method in industrial production comprises the following steps: and in the ruler plug gauge method, the coaxiality error of the coupler is measured by using a ruler, and the parallelism error of the coupler is measured by using a plug gauge. This method is simple, but has a large error. The device is generally used for machines with lower rotating speed and low precision requirement; the excircle and end face double-meter method is characterized in that two dial meters are used for respectively measuring numerical values on the excircle and the end face of a coupler hub, the measured numerical values are calculated and analyzed, the positions of two shafts in space are determined, and finally, the adjustment amount and the adjustment direction are obtained. This method is widely used. The main disadvantage is that for machines with axial play, the end face measurement reading will be subject to errors when turning. It is generally used for small and medium-sized machines which adopt rolling bearings and have small axial play; the method is characterized in that two dial indicators are used on the end face and are symmetrically arranged with equal distance from the center of the shaft to eliminate the influence of axial movement on the end face measurement and reading. Such as: steam turbines, centrifugal compressors, etc.; the excircle double-meter method uses two dial meters to measure the excircle, and the principle is that the relative position of two shafts is determined by two groups of excircle measurement readings at a certain interval, so that the adjustment amount and the adjustment direction are obtained, and the aim of centering is fulfilled. The disadvantage of this method is that the calculation is more complex; the single-meter method only measures the outer circle reading of the hub and does not need to measure the end face reading. The method has high centering precision, can be used for aligning the machine shaft with small hub diameter and larger shaft end distance, and is also suitable for aligning the shaft of a multi-shaft large-scale unit (such as a high-speed shaft and a high-power centrifugal compressor unit). The method for shaft alignment can also eliminate the influence of axial movement on alignment precision. In the above-mentioned various shaft coupling centering methods, the used devices mainly include a feeler gauge, a special fixture (generally a magnetic gauge stand), a dial indicator, a board ruler or a tape measure, all of which are hand tools, and the degree of automation is low.

In the prior art, errors and errors are easily caused due to the fact that a large amount of data are measured and recorded and the data are similar; the method has the advantages that the method has strong specialty, extremely high requirements on personnel quality, less working experience or low technical level, and is difficult for workers to measure or record; more data conversion is needed, and errors are easily caused; the method is purely operated manually, so that data measurement or calculation errors are easily caused; the time consumption is high, and the working efficiency is low; the dial gauge is too large in size and the like, so that the operation is difficult in a limited space; fixed structures such as a holding tool and a dial indicator are easy to loosen, so that the problems of inaccurate measured data and the like are caused.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems that errors and errors are easily caused due to the fact that a large amount of data are measured and recorded and the data are similar; the method has the advantages that the method has strong specialty, extremely high requirements on personnel quality, less working experience or low technical level, and is difficult for workers to measure or record; more data conversion is needed, and errors are easily caused; the method is purely operated manually, so that data measurement or calculation errors are easily caused; the time consumption is high, and the working efficiency is low; the dial gauge is too large in size and the like, so that the operation is difficult in a limited space; it causes not hard up easily to add fixed knot structure departments such as instrument, percentage table, arouses technical problem such as measured data is inaccurate, the utility model provides a change quick-witted central alignment appearance of axle.

A rotary machine shaft center alignment apparatus comprising: the first data collector and the second data collector are fixed in a radial symmetry mode relative to the coupler, signals are sent to the digital processor through the first data transmitter and the second data transmitter, and the digital processor processes and displays the received data through the digital signal receiver.

Further, the first data collector comprises: first magnetic force support, first fixed montant, first fixed horizontal pole, the fixed montant of second, first flexible montant, first flexible horizontal pole, the flexible montant of second, first fastening is detained, the second fastening is detained, the third fastening is detained and first data acquisition head, the first flexible montant of first magnetic force support upper portion fixed connection, first flexible montant is detained through first fastening with first fixed montant and is connected, first fixed montant one side is connected with first fixed horizontal pole, first fixed horizontal pole is detained through the second fastening with first flexible horizontal pole and is connected, first flexible horizontal pole lower extreme is connected with the fixed montant of second, the fixed montant of second is detained through the third fastening with first data acquisition head and is connected.

Further, the first data collection head comprises: the first telescopic probe is fixedly connected to one side of the lower end of the third fixed cross rod, the second telescopic probe is fixedly connected to one side of the lower end of the second telescopic vertical rod, the first telescopic probe and the second telescopic probe are located on the same side of the second telescopic vertical rod, the first data transmitter is arranged inside the first telescopic probe, and the second data transmitter is arranged inside the second telescopic probe.

Further, the second data collector comprises: the first magnetic force support comprises a second magnetic support, a third fixed vertical rod, a second fixed transverse rod, a fourth fixed vertical rod, a third telescopic vertical rod, a second telescopic transverse rod, a fourth telescopic vertical rod, a fourth fastening buckle, a fifth fastening buckle, a sixth fastening buckle and a second data acquisition head, wherein the third telescopic vertical rod is fixedly connected to the upper portion of the second magnetic support, the third telescopic vertical rod is connected with the third fixed vertical rod through the fourth fastening buckle, one side of the third fixed vertical rod is connected with the second fixed transverse rod, the second fixed transverse rod is connected with the second telescopic transverse rod through the fifth fastening buckle, the lower end of the second telescopic transverse rod is connected with the fourth fixed vertical rod, and the fourth fixed vertical rod is connected with the second data acquisition head through the sixth fastening buckle.

Further, the second data pick-up head comprises: the fixed horizontal pole of fourth, fixed probe, the flexible probe of third and third data transmitter, the fixed horizontal pole fixed connection of fourth is in one side of the flexible montant of fourth, the fixed horizontal pole lower extreme fixed connection fixed probe of fourth, the flexible probe of one side fixed connection third of the flexible montant lower extreme of fourth, the inside third data transmitter that is provided with of the flexible probe of third.

Furthermore, the first fastening buckle, the second fastening buckle, the third fastening buckle, the fourth fastening buckle, the fifth fastening buckle and the sixth fastening buckle are tapered thread fastening buckles.

Further, the first telescopic probe, the second telescopic probe and the third telescopic probe are all ball magnetic probes.

Further, the digital processor includes: the digital signal receiver is connected with each data transmitter through a wireless signal, a data calculation program and four coupler state diagrams are arranged in the digital processor, the received digital signals are calculated through the built-in data calculation program, and the results and the coupler state diagrams are displayed on the calculation result display screen and the coupler state display screen.

The utility model has the advantages that:

the utility model discloses at the first flexible probe of lower extreme fixedly connected with of the fixed horizontal pole of third, at the one side difference fixedly connected with second flexible probe, the flexible probe of third of the flexible montant of second and fourth, flexible probe use is telescopic sensor probe, and the setting of three probe is effectively avoided the axle to scurry the error that causes, the utility model discloses in be provided with first joint fastening buckle and second joint fastening buckle third fastening buckle, fourth fastening buckle, fifth fastening buckle, sixth fastening buckle, all fastening buckles are tapered screw fastening buckles, are used for fixing horizontal telescopic link and vertical telescopic link, avoid the support to rock, the utility model provides a magnetic support uses strong magnet to make and forms, is used for fixing whole device on equipment firmly, and magnetic support can be applicable to different grade type commentaries on classics machine, and the range of application is wider, the utility model discloses well collector volume, The size is small, the device is suitable for alignment in a limited space and is small in application limitation, the device uses a double-section plug-in type telescopic rod, the horizontal position and the vertical position of the probe can be adjusted according to the specific condition of equipment, the device uses a separated data acquisition head, can be installed in the forward direction and the backward direction of a coupler, and is flexible to use, the device can integrate all data recording, calculation and the like into a digital receiving processor through a first data acquisition head and a second data acquisition head, abandons the traditional manual calculation, has high speed and high accuracy, the digital processor in the device is used for receiving and processing data, directly displays the shaft state on a display screen, simultaneously compresses and converts the probe into the gasket quantity which needs to be additionally installed on each ground foot at the motor side, the device integrates the recording and calculation into the digital processor, and a worker can erect and operate tools without knowing the professional principle, the method has the advantages of greatly expanding the range of workers, greatly improving the working efficiency, along with wide application range, high data recording and calculating speed, high accuracy and simple and convenient operation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the utility model;

FIG. 2 is a schematic structural diagram of a first data collector;

FIG. 3 is a schematic view of a portion of the structure of FIG. 2 at A;

FIG. 4 is a schematic structural diagram of a second data collector;

FIG. 5 is a schematic view of a portion of the structure shown at B in FIG. 4;

FIG. 6 is a block diagram of a digital processor;

FIG. 7 is a schematic diagram of data measurement sites;

FIG. 8 is a schematic view of a coupling state;

wherein:

a first data collector-101, a second data collector-102, a digital processor-103, a first magnetic support-1, a first fixed vertical rod-2, a first fixed cross rod-3, a second fixed vertical rod-4, a first telescopic vertical rod-5, a first telescopic cross rod-6, a second telescopic vertical rod-7, a first fastening buckle-8, a second fastening buckle-9, a third fastening buckle-10, a first data collecting head-11, a third fixed cross rod-25, a first data emitter-27, a second data emitter-28, a first telescopic probe-23, a second telescopic probe-24, a second magnetic support-12, a third fixed vertical rod-13, a second fixed cross rod-14, a fourth fixed vertical rod-15 and a third telescopic vertical rod-16, the system comprises a second telescopic cross rod-17, a fourth telescopic vertical rod-18, a fourth fastening buckle-19, a fifth fastening buckle-20, a sixth fastening buckle-21, a second data acquisition head-22, a fourth fixed cross rod-26, a fixed probe-31, a third telescopic probe-30, a third data transmitter-29, a digital signal receiver-33, a coupler state display screen-34, a calculation result display screen-35 and a digital input area-36.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that the installation manners and technical terms mentioned in the present invention are technical terms that have been clearly known in the technical field, and thus, the explanation thereof is not repeated. Moreover, the same reference numerals are used for the same components, which do not affect and should not constitute an exact understanding of the technical solutions for a person skilled in the art.

The first embodiment is as follows:

the utility model relates to a change quick-witted axle center alignment appearance, include: the device comprises a first data collector 101, a second data collector 102 and a digital processor 103, wherein the first data collector 101 and the second data collector 102 are fixed symmetrically in the radial direction of a coupler, signals are sent to the digital processor 103 through a first data transmitter 27 and a second data transmitter 28, and the digital processor 103 processes and displays the received data through a digital signal receiver 33; the method has the advantages that the method has strong specialty, extremely high requirements on personnel quality, less working experience or low technical level, and is difficult for workers to measure or record; more data conversion is needed, and errors are easily caused; the method is purely operated manually, so that data measurement or calculation errors are easily caused; the time consumption is high, and the working efficiency is low; the dial indicator size is too big, the problem such as difficult operation in restricted space, gather the data of shaft coupling through first data collection station 101 and second data collection station 102, send data for digital processing unit 103 processing analysis through wireless mode, then adjust the shaft coupling through the analysis data and make it reach the purpose of changeing quick-witted axle center alignment, equipment operation is simple, carry out data analysis through digital processing unit 103 and handle, work efficiency is high, strong specialization, thereby the problem that can't reach changeing quick-witted axle center alignment because of operating personnel's various adverse factors of self lead to data measurement or the computational result is inaccurate has been avoided.

The first data collector 101 includes: the magnetic support comprises a first magnetic support 1, a first fixed vertical rod 2, a first fixed cross rod 3, a second fixed vertical rod 4, a first telescopic vertical rod 5, a first telescopic cross rod 6, a second telescopic vertical rod 7, a first fastening buckle 8, a second fastening buckle 9, a third fastening buckle 10 and a first data acquisition head 11, wherein the first telescopic vertical rod 5 is fixedly connected to the upper part of the first magnetic support 1, the first telescopic vertical rod 5 is connected with the first fixed vertical rod 2 through the first fastening buckle 8, one side of the first fixed vertical rod 2 is connected with the first fixed cross rod 3, the first fixed cross rod 3 is connected with the first telescopic cross rod 6 through the second fastening buckle 9, the lower end of the first telescopic cross rod 6 is connected with the second fixed vertical rod 4, the second fixed vertical rod 4 is connected with the first data acquisition head 11 through the third fastening buckle 10, and the problem that the looseness of fixing structures such as a holding tool, a dial indicator and the like is easily caused is solved, the problem of inaccurate measured data is caused, each joint of the first data acquisition unit 101 is fixed through the first fastening buckle 8, the second fastening buckle 9 and the third fastening buckle 10, and the first telescopic vertical rod 5, the first telescopic cross rod 6 and the second telescopic vertical rod 7 enable the horizontal position and the vertical position of the first data acquisition head 11 to be convenient to adjust so as to adapt to more different working scenes.

The first data collection head 11 comprises: the device comprises a third fixed cross rod 25, a first data transmitter 27, a second data transmitter 28, a first telescopic probe 23 and a second telescopic probe 24, wherein the third fixed cross rod 25 is fixed on one side of a second telescopic vertical rod 7, the lower end of the third fixed cross rod 25 is fixedly connected with the first telescopic probe 23, one side of the lower end of the second telescopic vertical rod 7 is fixedly connected with the second telescopic probe 24, the first telescopic probe 23 and the second telescopic probe 24 are positioned on the same side of the second telescopic vertical rod 7, the first data transmitter 27 is arranged in the first telescopic probe 23, and the second data transmitter 28 is arranged in the second telescopic probe 24, so that the problems that errors and errors are easily caused due to more data during measurement and recording and similar data are solved; the method has the advantages that the method has strong specialty, extremely high requirements on personnel quality, less working experience or low technical level, and is difficult for workers to measure or record; more data conversion is needed, and errors are easily caused; the method is purely operated manually, so that data measurement or calculation errors are easily caused; the time is more consuming, the problem of work efficiency is low, through the mode that adopts first flexible probe 23 and second flexible probe 24 record data, the data of gathering are accurate and collection efficiency is high, save man-hour.

The second data collector 102 comprises: the upper portion of the second magnetic support 12 is fixedly connected with a third telescopic vertical rod 16, the third telescopic vertical rod 16 is connected with the third fixed vertical rod 13 through a fourth fastening buckle 19, one side of the third fixed vertical rod 13 is connected with the second fixed horizontal rod 14, the second fixed horizontal rod 14 is connected with the second telescopic horizontal rod 17 through the fifth fastening buckle 20, the lower end of the second telescopic horizontal rod 17 is connected with the fourth fixed vertical rod 15, the fourth fixed vertical rod 15 is connected with the second data acquisition head 22 through the sixth fastening buckle 21, and the problem that fixed structures such as holding tools and dial gauges are easy to loosen is solved through the arrangement, the problem of inaccurate measured data is caused, all joints of the second data acquisition unit 102 are fixed through the fourth fastening buckle 19, the fifth fastening buckle 20 and the sixth fastening buckle 21, and the horizontal and vertical positions of the first data acquisition head 11 are adjusted through the third telescopic vertical rod 16, the second telescopic cross rod 17 and the fourth telescopic vertical rod 18 so as to adapt to more different working scenes.

The second data pick-up head 22 comprises: the device comprises a fourth fixed cross rod 26, a fixed probe 31, a third telescopic probe 30 and a third data transmitter 29, wherein the fourth fixed cross rod 26 is fixedly connected to one side of a fourth telescopic vertical rod 18, the lower end of the fourth fixed cross rod 26 is fixedly connected with the fixed probe 31, one side of the lower end of the fourth telescopic vertical rod 18 is fixedly connected with the third telescopic probe 30, and the third data transmitter 29 is arranged in the third telescopic probe 30, so that the problems that errors and errors are easily caused due to the fact that more data are measured and recorded and the data are similar are solved; the method has the advantages that the method has strong specialty, extremely high requirements on personnel quality, less working experience or low technical level, and is difficult for workers to measure or record; more data conversion is needed, and errors are easily caused; the method is purely operated manually, so that data measurement or calculation errors are easily caused; consuming time more, the problem that work efficiency is low through the mode that adopts fixed probe 31 and the data of the record of third flexible probe 30, and the data of gathering are accurate and collection efficiency is high, saves man-hour.

First fastening knot 8, second fastening knot 9, third fastening knot 10, fourth fastening knot 19, fifth fastening knot 20 and sixth fastening knot 21 all preferably are tapered thread fastening knot, perhaps adopt other modes such as bolt-up to realize fastening, so set up and solved fixed knot such as holding instrument, percentage table and locate to cause easily not hard up, arouse the inaccurate problem of measured data, preferably adopt tapered thread fastening to detain and have reached better fastening effect.

The first telescopic probe 23, the second telescopic probe 24 and the third telescopic probe 30 are all ball magnetic probes, and the more sensitive ball magnetic probes are adopted to enable the data collected by measurement to be more accurate.

The digital processor 103 includes: a digital signal receiver 33, a coupling status display screen 34, a calculation result display screen 35 and a digital input area 36, the digital signal receiver 33 is connected with each data transmitter through wireless signals, a data calculation program and four coupling state diagrams are arranged in the digital processor 103, the received digital signals calculate results through the built-in data calculation program, and displays the results and the coupler state diagram on the calculation result display screen 35 and the coupler state display screen 34, the related parameters are changed through the digital input area 36, so that the problem that the data measurement or calculation error is easily caused by pure manual operation is solved, and by adopting the digital processor 103 to replace a manual measurement calculation mode, the data calculation program is arranged in the digital processor 103, so that the data measurement and analysis efficiency is higher, and inaccurate data recording and calculation caused by low professional performance of operators are avoided.

The working principle is as follows:

and a first data acquisition head and a second data acquisition head are axially symmetrically arranged on the coupling pair wheel at the adjusting side of the rotary machine foot. And starting a data acquisition head switch and a data processor switch, zeroing data of the first telescopic probe, the second telescopic probe and the third telescopic probe, measuring a distance L1 from the X bearing to the coupling pair wheel, measuring a distance L from the Y bearing to the coupling pair wheel, inputting the distance L into the data processor, and inputting a diameter D of the coupling pair wheel. As shown in FIG. 7, the data measured by the first telescopic probe at the upper end and the lower end of the coupling are respectively b1 and b3, the data measured by the second telescopic probe are respectively a1 and a3, and the data measured by the third telescopic probe are respectively a1 'and a 3'. The first, second and base sheet data transmitters respectively transmit data to the data processor. The coupling state diagram (see fig. 8) is preset in advance in the data processor, and the calculation formula is as follows:

a＝(a1+a1′)/2-(a3+a3′)/2

b＝(b1-b3)/2

ΔX＝L1×a/D-b

ΔY＝L×a/D-b

as shown in fig. 8, by calculating the values of a and b, the coupler state is determined and displayed on the coupler display screen of the data processor according to the values of a and b.

Calculating the quantity of the ground feet plus-minus gaskets at the X, Y bearing respectively by calculating the values of delta X and delta Y:

if the delta X is larger than 0, adding a gasket; if Δ X <0, subtract shim; the increment and decrement are absolute values of delta X;

if delta Y is greater than 0, adding a gasket; if Δ Y is less than 0, subtract shim; the amount of increase and decrease is an absolute value of Δ Y.

And displaying the result in a calculation result display screen.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

The above, only do the preferred embodiment of the present invention, not used to limit the present invention, all the technical matters of the present invention should be included in the protection scope of the present invention for any slight modification, equivalent replacement and improvement of the above embodiments.

Claims (8)

1. The utility model provides a change quick-witted axle center alignment appearance which characterized in that includes: the device comprises a first data collector (101), a second data collector (102) and a digital processor (103), wherein the first data collector (101) and the second data collector (102) are fixed in a radial symmetry mode around a coupler, signals are sent to the digital processor (103) through a first data transmitter (27) and a second data transmitter (28), and the digital processor (103) processes and displays received data through a digital signal receiver (33).

2. A rotary machine shaft centre aligner according to claim 1, wherein the first data collector (101) comprises: first magnetic support (1), first fixed montant (2), first fixed horizontal pole (3), the fixed montant of second (4), first flexible montant (5), first flexible horizontal pole (6), the flexible montant of second (7), first fastening is detained (8), the second fastening is detained (9), the third fastening is detained (10) and first data acquisition head (11), first magnetic support (1) upper portion fixed connection first flexible montant (5), first flexible montant (5) is detained (8) through first fastening with first fixed montant (2) and is connected, first fixed montant (2) one side is connected with first fixed horizontal pole (3), first fixed horizontal pole (3) are detained (9) through the second fastening with first flexible horizontal pole (6) and are connected, first flexible horizontal pole (6) lower extreme is connected with the fixed montant of second (4), the fixed montant of second (4) is detained (10) through the third fastening with first data acquisition head (11) and is connected .

3. A rotary machine axis centering apparatus according to claim 2, wherein said first data pick head (11) comprises: the fixed horizontal pole of third (25), first data transmitter (27), second data transmitter (28), first flexible probe (23) and second flexible probe (24), the one side at the flexible montant of second (7) is fixed in the fixed horizontal pole of third (25), the first flexible probe of fixed horizontal pole of third (25) lower extreme fixed connection (23), the flexible montant of second (7) lower extreme one side fixed connection second flexible probe (24), first flexible probe (23) and second flexible probe (24) lie in the same one side of the flexible montant of second (7), first flexible probe (23) inside is provided with first data transmitter (27), the inside second data transmitter (28) that is provided with of second flexible probe (24).

4. The rotating shaft center aligning apparatus according to claim 3, wherein the second data collector (102) comprises: the second magnetic support (12), the third fixed vertical rod (13), the second fixed cross rod (14), the fourth fixed vertical rod (15), the third telescopic vertical rod (16), the second telescopic cross rod (17), the fourth telescopic vertical rod (18), the fourth fastening buckle (19), the fifth fastening buckle (20), the sixth fastening buckle (21) and the second data acquisition head (22), the second magnetic support (12) is fixedly connected with the third telescopic vertical rod (16) on the upper portion, the third telescopic vertical rod (16) is connected with the third fixed vertical rod (13) through the fourth fastening buckle (19), one side of the third fixed vertical rod (13) is connected with the second fixed cross rod (14), the second fixed cross rod (14) is connected with the second telescopic cross rod (17) through the fifth fastening buckle (20), the lower end of the second telescopic cross rod (17) is connected with the fourth fixed vertical rod (15), the fourth fixed vertical rod (15) is connected with the second data acquisition head (22) through the sixth fastening buckle (21) .

5. A rotary machine axis centering apparatus according to claim 4, wherein said second data pick head (22) comprises: the fixed horizontal pole of fourth (26), fixed probe (31), the flexible probe of third (30) and third data transmitter (29), the fixed horizontal pole of fourth (26) fixed connection is in one side of the flexible montant of fourth (18), the fixed probe of fixed horizontal pole of fourth (26) lower extreme fixed connection (31), the flexible probe of one side fixed connection third (30) of the flexible montant of fourth (18) lower extreme, the inside third data transmitter (29) that is provided with of the flexible probe of third (30).

6. The rotating machine shaft center aligning instrument according to claim 4, wherein the first fastener (8), the second fastener (9), the third fastener (10), the fourth fastener (19), the fifth fastener (20) and the sixth fastener (21) are tapered thread fasteners.

7. A rotary machine shaft centre aligner according to claim 3 or 5, wherein the first (23), second (24) and third (30) telescopic probes are ball magnetic probes.

8. A rotary shaft center aligner as claimed in claim 1, wherein said digital processor (103) comprises: digital signal receiver (33), shaft coupling state display screen (34), calculation result display screen (35) and digital input area (36), each data transmitter is connected through wireless signal to digital signal receiver (33), set up data calculation procedure and four kinds of shaft coupling state diagrams in digital processor (103), the digital signal that accepts calculates the result through built-in data calculation procedure to show result and shaft coupling state diagram on calculation result display screen (35) and shaft coupling state display screen (34).

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