CN201788504U - Calculator special for aligning and centering rotating mechanical coupling - Google Patents
Calculator special for aligning and centering rotating mechanical coupling Download PDFInfo
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- CN201788504U CN201788504U CN2010201243281U CN201020124328U CN201788504U CN 201788504 U CN201788504 U CN 201788504U CN 2010201243281 U CN2010201243281 U CN 2010201243281U CN 201020124328 U CN201020124328 U CN 201020124328U CN 201788504 U CN201788504 U CN 201788504U
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Abstract
The utility model discloses a calculator special for aligning and centering a rotating mechanical coupling, which is suitable for occasions requiring the centering and the alignment of rotating machines during installation or maintenance. The calculator mainly comprises a keyboard input part, a liquid crystal display part, a measuring tape, a power supply switch part and a casing. By combining a dial gauge and a gauge frame or a dial gauge type aligning and centering instrument for use, the calculator can quickly and accurately finish aligning work. The aligning and centering work can be conveniently and quickly finished by adjusting according to an aligning and centering adjusting value generated by the special calculator. The utility model can be used for aligning and centering the rotating machines without fuzzy calculation or construction solution, in particular for estimating and repeatedly adjusting the aligning and centering process based on the experiences, thereby the calculator uses a simple method, is easy for grasping, saves time and force, reduces the labor intensity and has more direct-viewing determination value. Compared with a laser centering apparatus, the utility model has the characteristics of wider adaptability and low price and is easy for carrying.
Description
Technical field
The present invention relates to rotating machinery and install and rotating machinery checking maintenance technical field, specifically, be meant a kind of method and device thereof that is used for coupler of rotating machinery centering and centering.
Background technology
Rotating machinery is industrial most widely used plant equipment.Many large rotating machineries, as: centrifugal pump, generator, compressor, steam turbine, rolling mill, rotary kiln etc. all are the key equipments of industrial enterprise.In rotating machinery fault, axle is that fault 60% comes from rotor misalignment, and the various forms of misaligning see attached list 1:
The various form tables that misalign of table 1
This rotor one bearing one condition of misalignment of shaft coupling system in actual engineering is very general.Because the existence of rotor misalignment, cause vibration and noise in the rotating machinery operation process, cause shaft coupling deflection simultaneously, on shaft coupling, cause very big stress, cause diaphragm ring distortion cracking, the loosening fracture of fastening bolt, and seriously influence the operate as normal that axle, bearing and axle are gone up other parts, make bearing wear, oil film unstability, seal leakage and rotating shaft deflection deformation etc. be unfavorable for the dynamic effect of rotating machinery operation, even cause the vibration on entire machine and basis or damage etc.Therefore, initiatively machine is answered the concentric of strictness with the rotation center of two axles that shaft coupling was connected of driven machine, must accurately carry out centering, the centering work of shaft coupling when rotating machinery is installed.The centering of coupler of rotating machinery, centering work to call centering in the following text, are one of links very important in rotating machinery installation and the maintenance process.
The purpose of centering is when rotating machinery is worked, and make initiatively machine and driven machine, or two shaft centre lines of title main drive shaft and driven shaft is on same straight line.By measurement and calculating, the analysis deviation situation, it was both concentric with driven arbor, parallel again to reach the active arbor to adjust active arbor center.Whether the accuracy relation of centering can run well to machine, and the machine that runs up is even more important.By measurement and calculating, the analysis deviation situation, it was both concentric with driven shaft, parallel again to reach main drive shaft to adjust active arbor center.But the centering of diaxon absolutely accurate is unapproachable, the machine of continuous running is required to remain centering is just more difficult accurately.The displacement that the deflection of the differential thermal expansion of each parts, axle, the uneven wear of bearing, machine produce and the uneven subsidence on basis etc. all are to cause the reason that is difficult for retainer shaft centering.Therefore, the regulation diaxon misaligns and allows a deviate when planing machine, and this also is needed when shaft coupling is installed, and centering work just will misalign the course of work and the method for extent control in above-mentioned permissible variation value.
Existing aligning method has three kinds: 1) iron wire winding shaft joint method and knife-edge chi add the clearance gauge method, and these two kinds of methods are applicable to the uncomplicated occasion of the slow-speed of revolution, simple device and site environment of resilient connection, and degree of accuracy is low.Eliminate because of improving constantly day by day of Equipment Management in Enterprise and maintenance requirement, these two kinds of methods now are out of use substantially.2) dial gauge method, utilize dial gauge and dial framework or fixed mount, or collection adorned dial gauge and dial framework to wheel alignment instrument, axiality measuring apparatus, concentricity measuring instrument, this kind method is divided into single table, two table, three tables, four kinds of methods of multilist again, is applicable to different occasions separately.The dial gauge method is applicable to the slewing that rotating speed is higher, accuracy requirement is high; The method is lower to the requirement of centering instrument apparatus, and is with low cost; Low to environmental requirement, adaptability is better.At present, this kind method is the most commonly used.Its shortcoming is: the technician is had relatively high expectations, need certain experience; Grasp in the absence of computing method, the often time-consuming manpower that takes of rule of thumb is not easy disposable carrying out, and needs centering repeatedly usually, resumes production at once if run into machinery requirement, and is more passive; Though by measurement and the calculating based on the triangle geometrical principle, can finish centering work comparatively quickly and accurately, the computing formula of list table, two table, three tables, four kinds of methods of multilist is loaded down with trivial details and have nothing in common with each other difficult memory, grasp; Sometimes also need to make special-purpose frame tool according to environment, operating mode.3) laser alignment instrument aligning method, the measuring principle of laser alignment instrument is similar to single table method principle of dial gauge, substitute the both sides that dial gauge is separately fixed at shaft coupling by two Laser emission, receiving element in the laser method for centering, write down measured value on greater than 3 positions of 20 ° at any two intervals.Display unit calculates parallel deviation and angular deviation automatically.And, provide the adjusted value and value of leveling up of the adjustable device forward foot in a step and the rear foot automatically based on basic triangle geometrical principle.Measuring process is simple, quick, can increase work efficiency greatly and degree of accuracy, and measurement result has nothing to do with the operator.Though also there is shortcoming in laser centering method advanced person: at first, laser alignment instrument price is higher, though from the beginning more than 20 ten thousand drop to now 7～80,000, but still can't enter each basic unit of industrial enterprise comprehensively and use; Secondly, high rotating speed machinery is general to adopt sliding bearing, because the locator meams of sliding bearing and rotor, make rotor and stator have end play, the laser alignment instrument can't be eliminated the influence of the rotor axial amount of scurrying to the angle deviate, at this moment, also must use the dial gauge method as three table or multilist method for centering; Also have, in the plant equipment that does not allow rotor rotation or special-shaped shaft coupling rotor has been installed, the centrifugal compressor of dry gas seals for example has been installed, rotor does not allow to rotate, the laser alignment instrument can't satisfy to be installed and the maintenance request for utilization, also will use dial gauge aligning method more flexibly this moment.
In sum, in two kinds of aligning methods commonly used at present, dial gauge aligning method cost is low, and applicability is wide, and computing method are difficult to grasp, and waste time and energy.Laser method for centering process is simple, quick, can increase work efficiency greatly and degree of accuracy, and method advanced person, but the laser alignment instrument costs an arm and a leg, and use certain limitation is arranged.
Summary of the invention
The present invention is in order to solve the defective that exists in the prior art, a kind of method and special calculator thereof that is used for coupler of rotating machinery centering centering is provided, described special calculator is the handheld device of special measurement and calculating, in conjunction with dial gauge and dial framework or traditional percentage tabular form wheel alignment instrument, axiality measuring apparatus, concentricity measuring instrument are used, finish centering work fast and accurately.
The present invention is by the integrated some external dimensions of measurement tape measure, calculate the alignment deviation state and each leg pad adjustment data of error of centralization state and numerical value, LCD screen output patternization and formation integrated design by key input section input measurement data and dial gauge reading, internal compute unit.
The error of centralization parameter that described special calculator is measured by the some external dimensions and the dial gauge of the tape measure of keyboard input, calculate, provide centering and adjust numerical value, its structure mainly is made up of key input section, liquid crystal display output, measurement tape measure, power switch part and housing, is provided with the internal circuit unit in described enclosure interior; Key input section is formed by comprising " 0 " numerical key, " negative sign " key, " radix point " key, " pattern/state " options button, " cancellation/backspace " key, " determining " key to " 9 ", is used for man-machine interaction, selection centering pattern, input measurement numerical value, input dial gauge data; The liquid crystal display output is used for showing measuring imports data, dial gauge input data, centering state, deviation adjustment numerical value; Power supply and switch sections are made up of the battery compartment and the power switch of rechargeable battery.Measure the external dimension that tape measure is used to measure motor, comprising: initiatively spacing, shaft coupling diameter in spacing, active machine rear support and the shaft coupling in bearing and the shaft coupling before the machine.
The invention has the advantages that:
(1) the present invention can solve in the work of coupler of rotating machinery centering, centering at present the most frequently usedly, adopts dial gauge and the dial framework method wastes time and energy, the not wield problem of computing formula.
(2) professional calculator provided by the invention makes the centering process simple, directly perceived, quick, can increase work efficiency greatly and accuracy, compares cheap with the laser alignment instrument.
(3) this special calculator about 1,000 yuan, only quite is suitable for the sixtieth of laser alignment instrument price with addition of a complete set of price of dial gauge and dial framework, and applicability wider, be easy to carry.
Description of drawings
Fig. 1 is that counter surface structure of the present invention is formed synoptic diagram;
Fig. 2 is an internal circuit cellular construction synoptic diagram in the counter of the present invention;
Fig. 3 is a centering centering method process flow diagram of the present invention;
Fig. 4 is a liquid crystal display output synoptic diagram in the embodiment of the invention;
Fig. 5 calculates dial gauge reading synoptic diagram among the present invention;
Fig. 6 adjusts the pad principle schematic among the present invention.
Embodiment
The present invention is described in detail below in conjunction with accompanying drawing.
The invention provides a kind of method and special calculator thereof that is used for coupler of rotating machinery centering centering, the error of centralization parameter that described special calculator is measured by the some external dimensions and the dial gauge of the tape measure of keyboard input is calculated, is provided centering and adjusts numerical value.Described external dimension comprises: initiatively spacing, shaft coupling diameter in spacing, active machine rear support and the shaft coupling in bearing and the shaft coupling before the machine, as shown in Figure 1, this counter mainly is made up of key input section 1, liquid crystal display output 2, measurement tape measure 3, power switch part 4 and housing 5, is provided with internal circuit unit 6 in described housing 5 inside.
In the above-mentioned ingredient, key input section 1 is made up of the numerical key 101 that comprises " 0 " to " 9 ", " negative sign " key 102, " radix point " key 103, " pattern/state " options button 104, " cancellation/backspace " key 105, " determining " key 106, is used for man-machine interaction, selection centering pattern, input measurement numerical value, input dial gauge data; Liquid crystal display output 2 is used for showing measuring imports data, dial gauge input data, centering state, deviation adjustment numerical value; Internal circuit unit 6 mainly is made up of computing chip 601 (model is SAMSUNG S3C44BOX), ROM (read-only memory) 602 (ROM), random access memory 603 (RAM), interface circuit 604, peripheral circuit 605, as shown in Figure 2, peripheral circuit 605 wherein is used for supply voltage conversion, charging control and power management; Interface circuit 604 is made up of LCD interface and data exchange interface, be used to drive liquid crystal display, with outside pc machine terminal 7 swap datas; ROM (read-only memory) 602 (ROM) is used for binary data such as the storage control of computing chip 601 and computations program, figure picture; Random access memory 603 (RAM) is used for storage keyboard input data, intermediate treatment data, is convenient to computing chip 601 and carries out data extract calculating; Computing chip 601 according to user's keyboard instruction control program flow process, extract the intermediate treatment data, carry out numerical evaluation and extract graphic presentation, show by the display interface liquor charging crystal display in the interface circuit 604, data such as the supplemental characteristic of input, net result can be as required, send MX232 data exchange standard serial line interface and pc machine terminal 7 swap datas in the interface circuit 604, computing chip 601 also will be monitored power supply status, charged state, and send interface circuit 604 to show; Above-mentioned computations program and figure image data are solidificated in the ROM (read-only memory) 602 (ROM) in advance, computing chip 601 is by calling key in data, the intermediate treatment data in computations program and the random access memory 603 (RAM), calculates centering state and deviation automatically and adjusts numerical value and show at liquid crystal display output 2 by interface; Power supply and switch sections 4 are made up of battery compartment and the power switch that can adorn 2 joint 5# rechargeable batteries.
Use method flow that the above-mentioned special calculator that provides carries out centering centering as shown in Figure 3, concrete steps are as follows:
Whether step 8, selection continue to adjust the height direction, checking each dial gauge height direction 0 spends to the 180 degree amounts of deflection, review result is as then entering next step by " determining " key in the permissible variation scope, otherwise select to continue to adjust the height direction, be back to step 7, import once more, calculate, adjust, until alignment deviation in the permissible variation scope;
Whether step 10, selection continue to adjust horizontal direction: after initiatively machine horizontal centring deviation finishes by the parameter adjustment that provides, checking each dial gauge horizontal direction 0 spends to the 180 degree amounts of deflection, then select to continue to adjust the height direction if exceed the permissible variation scope, be back to step 9, import once more, calculate, be adjusted in the permissible variation scope, in the permissible variation scope, then press " determining " key as review result, finish centering work.
Carrying out the concrete computation process of centering centering according to the method described above, is example with two table mensurations, describes, specific as follows: as shown in Figure 5, initiatively machine 8 belows are respectively arranged with leg pad 10, and the process of centering centering will be adjusted leg pad 10 exactly.Two indicator bracket tables 11,12 are arranged on vertical and horizontal both direction, according to the reading a1～a4 of vertical frame table 11 and the reading s1～s4 of level frame table 12, calculate the initiatively adjustment amount of machine pad 10.
If the position of point position A ', B ' and adjustment fulcrum A, B (please notes the sensing of measurement axis to the reading dial gauge) as shown in Figure 6, is reference axis with the transverse axis, calculate with following formula:
H1＝L1＊(s1-s3)/D+(a1-a3)/2
H2＝(L1+L2)＊(s1-s3)/D+(a1-a3)/2
H1 in the formula, H2 are respectively the adjustment amount of fulcrum A and fulcrum B, and (on the occasion of the time subtract pad when being the cushioning negative value), mm;
S1, s3 and a1, a3 are respectively 0 ° and 180 ° of orientation record axially and dial gauge reading radially, mm;
D is the calculated diameter (dial gauge contact, promptly measuring point is to the distance of shaft coupling central point) of shaft coupling 9, mm;
L1 for fulcrum A to the distance between the shaft coupling measurement plane, mm;
L2 is the distance between fulcrum B and the fulcrum A, mm;
S1 in the formula, s3, a1, a3 are the readings of surveying with dial gauge, should comprise sign substitution computing formula together.
(1) if H1, H2 be on the occasion of, then require to increase spacer thickness; If negative value then reduces spacer thickness.
(2) above-mentioned calculating for the vertical direction adjustment.Can use same principle if horizontal direction is calculated adjustment amount, just adjustment amount is the move left and right amount of fulcrum, and need not increase and decrease spacer thickness.
Claims (1)
1. special calculator that is used for coupler of rotating machinery centering centering, it is characterized in that: described special calculator mainly is made up of key input section, liquid crystal display output, measurement tape measure, power switch part and housing, is provided with the internal circuit unit in described enclosure interior; Key input section is made up of numerical key, " negative sign " key, " radix point " key, " pattern/state " options button, " cancellation/backspace " key and " determining " key, and power supply and switch sections are made up of the battery compartment and the power switch of rechargeable battery; Described measurement tape measure is arranged on outside; The internal circuit unit mainly is made up of computing chip, ROM (read-only memory), random access memory, interface circuit and peripheral circuit, interface circuit is made up of LCD interface and data exchange interface, interface circuit connects liquid crystal display output, computing chip and outside pc machine terminal, and described computing chip is connected with ROM (read-only memory), random access memory and peripheral circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201243281U CN201788504U (en) | 2009-03-05 | 2010-03-05 | Calculator special for aligning and centering rotating mechanical coupling |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910118893.9 | 2009-03-05 | ||
| CN200910118893 | 2009-03-05 | ||
| CN2010201243281U CN201788504U (en) | 2009-03-05 | 2010-03-05 | Calculator special for aligning and centering rotating mechanical coupling |
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| Publication Number | Publication Date |
|---|---|
| CN201788504U true CN201788504U (en) | 2011-04-06 |
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| CN2010201243281U Expired - Fee Related CN201788504U (en) | 2009-03-05 | 2010-03-05 | Calculator special for aligning and centering rotating mechanical coupling |
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| CN (1) | CN201788504U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103425897A (en) * | 2013-09-02 | 2013-12-04 | 中国动物卫生与流行病学中心 | Sampling amount calculator for estimating prevalence rate of animal diseases |
| CN106441035A (en) * | 2016-08-30 | 2017-02-22 | 福建省马尾造船股份有限公司 | Method for determining centering angle of intermediate shaft |
| CN106897523A (en) * | 2016-12-12 | 2017-06-27 | 岳阳长炼机电工程技术有限公司 | Pump centering application |
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2010
- 2010-03-05 CN CN2010201243281U patent/CN201788504U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103425897A (en) * | 2013-09-02 | 2013-12-04 | 中国动物卫生与流行病学中心 | Sampling amount calculator for estimating prevalence rate of animal diseases |
| CN103425897B (en) * | 2013-09-02 | 2016-08-10 | 中国动物卫生与流行病学中心 | Estimate the amount of sampling computer of Animal diseases prevalence rate |
| CN106441035A (en) * | 2016-08-30 | 2017-02-22 | 福建省马尾造船股份有限公司 | Method for determining centering angle of intermediate shaft |
| CN106441035B (en) * | 2016-08-30 | 2019-03-19 | 福建省马尾造船股份有限公司 | A kind of method of determining intermediate shaft assignment angle |
| CN106897523A (en) * | 2016-12-12 | 2017-06-27 | 岳阳长炼机电工程技术有限公司 | Pump centering application |
| CN106897523B (en) * | 2016-12-12 | 2020-09-01 | 岳阳长炼机电工程技术有限公司 | Pump alignment method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110406 Termination date: 20180305 |
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| CF01 | Termination of patent right due to non-payment of annual fee |