CN102346099A - Method for correcting load jacking experiment of marine shaft system - Google Patents
Method for correcting load jacking experiment of marine shaft system Download PDFInfo
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- CN102346099A CN102346099A CN2011102011632A CN201110201163A CN102346099A CN 102346099 A CN102346099 A CN 102346099A CN 2011102011632 A CN2011102011632 A CN 2011102011632A CN 201110201163 A CN201110201163 A CN 201110201163A CN 102346099 A CN102346099 A CN 102346099A
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Abstract
The invention discloses a method for correcting a load jacking experiment of a marine shaft system, which comprises the following implementation steps of: placing a jack below an optimum point of the shaft system shown in a diagram; placing a dial indicator above the shaft system, wherein a measuring rod of the dial indicator is pressed on the top surface of the shaft system; starting a manual pump, and recording lifting power data of the jack until the jack is jacked to be with the data being the data of the shaft system in a total backlash of bearings; recording pressure data in a pump body as soon as the jack is descended by 0.05mm until the indication of the dial indicator is zero; organizing recorded experimental data, drawing load curve graphs of the ascending and the descending of the jack, and calculating an average value between the two curves, wherein the average value is a bearing load. According to the method disclosed by the invention, the propulsion performance of the marine shaft system and the load borne by each bearing can be more perfect through an effective scientific experiment method of the shaft system jacking, the service lives of the bearings are prolonged by more than three times, and the failure rate of a high-elastic coupling of a gear case and bearing heating is reduced to be zero.
Description
Technical field
The test field is lifted on the top that the present invention relates to marine shafting, specifically belongs to marine shafting load jacking trial correction method.
Background technology
In the past, as rigid body, often centering of shafting adopted in " flat method of principal axes " school people mostly axle system, because lack of science, so it is excessive certain bearing load often to occur, accidents such as bearing heating, vibration.In fact; Axle system is an elastic body; Centering of shafting carries out computational analysis with axle system as the elasticity continuous beam exactly and respectively supports stressing conditions; List three moments euqation and carry out moment of flexure and Calculation on Deflection; Try to achieve the optimum load of each bearing; Draw the Sag/gap value (being opening value and off-set value) of being given, and make the supporting reasonable stressization with the method for adjustment bearing position (bearing).Produced " method in the load school " to the greatest extent.Carry out in the school; Say on the above-mentioned theory that the suffered load of bearing meets the requirements basically; But; Because centering of shafting normally carries out after ship launching; This moment, method of ship floating condition changed, the micro-deformation of hull and various install and measure error all can with producer calculate given theoretical school intermediate value produce certain deviation.Therefore, a whole set of axle be finish in the school under water and connect after also must carry out " jacking test ", the correctness of the data detection centering of shafting that is drawn through " jacking test ".
Test is lifted on the top of marine shafting; Purpose is to check boats and ships under the drinking water state of regulation; During the main frame operation; The stressed distribution of each bearing such as main frame, gear case, axle system; Stressed too small; Bearing can produce vibrations; If certain shaft strength is excessive; Wearing and tearing are big, bearing heating, and the life-span sharply shortens; Treat the axle system that the large-sized low-speed two stroke diesel engine is driven; Except lifting the test on the top that will do axle system, bent axle model, the static thrust axis load chart that will provide according to main frame producer also, lift on the bearing top of doing in the diesel engine.Because axle system is an elasticity continuous beam has the numerous point can " jacking checks ", so as how minimum test number (TN), select the most appropriate point to carry out jacking, reach the test effect of the best.
Summary of the invention
The purpose of this invention is to provide a kind of marine shafting load jacking trial correction method; Effective scientific experimentation method of lifting through axle system top makes the propulsive performance of marine shafting more perfect with the load that each bearing bears; And to possess real shipping row axle be stressed science; Bearing improves more than 3 times serviceable life, and the high-elastic shaft coupling of gear case and the failure rate of bearing heating are reduced to zero.
The technical scheme that the present invention adopts is following:
Marine shafting load jacking trial correction method includes following implementation step:
1), the 10T lifting jack being placed the diagram axle is the below of optimum; Be that whole axle is that length overall multiply by about 0.618 coefficient selecting and is first Jacking point; Be chosen as second Jacking point at gearbox output shaft flange or main frame flywheel lower end then, the top lift active line of lifting jack must vertically pass the axial line of axle system;
2), place the clock gauge of 0 ~ 10mm range in the axle side of fastening, the gauge rod of clock gauge is pressed on the end face of axle system;
3), start manual pump, the every jacking 0.05mm of lifting jack, the lift data of a lifting jack of record, up to jacking till spool tie up to the data of bearing total backlash;
4) oil pressure in the lifting jack of, slowly releasing, the pressure data in pump housing of the every decline 0.05mm record of lifting jack till axle system drops on the lower limb of bearing fully, returns till zero with the reading of clock gauge;
5), the experimental data that collates the minutes, tabulation, and draw the load curve figure that lifting jack rises, descends is obtained the mean value between two curves, this mean value is this bearing load.
Description of drawings
Fig. 1 is the jacking position view of lifting jack of the present invention.
Fig. 2 is the curve of load figure of lifting jack of the present invention.
Embodiment
Referring to accompanying drawing, marine shafting load jacking trial correction method includes following implementation step:
1), 10T lifting jack 1 being placed the diagram axle is the below of optimum; Be that whole axle is that 2 length overalls multiply by about 0.618 coefficient selecting and are first Jacking point; Be chosen as second Jacking point at gearbox output shaft flange or main frame flywheel lower end then, the top lift active line of lifting jack must vertically pass the axial line of axle system;
2), place the clock gauge 3 of 0 ~ 10mm range in the axle side of fastening, the gauge rod of clock gauge is pressed on the end face of axle system;
3), start manual pump, the every jacking 0.05mm of lifting jack, the lift data of a lifting jack of record, up to jacking till spool tie up to the data of bearing total backlash;
4) oil pressure in the lifting jack of, slowly releasing, the pressure data in pump housing of the every decline 0.05mm record of lifting jack till axle system drops on the lower limb of bearing fully, returns till zero with the reading of clock gauge;
5), the experimental data that collates the minutes, tabulation, and draw the load curve figure that lifting jack rises, descends is obtained the mean value between two curves, this mean value is this bearing load.
Claims (1)
1. marine shafting load jacking trial correction method is characterized in that: include following implementation step:
1), the 10T lifting jack being placed the diagram axle is the below of optimum; Be that whole axle is that length overall multiply by about 0.618 coefficient selecting and is first Jacking point; Be chosen as second Jacking point at gearbox output shaft flange or main frame flywheel lower end then, the top lift active line of lifting jack must vertically pass the axial line of axle system;
2), place the clock gauge of 0 ~ 10mm range in the axle side of fastening, the gauge rod of clock gauge is pressed on the end face of axle system;
3), start manual pump, the every jacking 0.05mm of lifting jack, the lift data of a lifting jack of record, up to jacking till spool tie up to the data of bearing total backlash;
4) oil pressure in the lifting jack of, slowly releasing, the pressure data in pump housing of the every decline 0.05mm record of lifting jack till axle system drops on the lower limb of bearing fully, returns till zero with the reading of clock gauge;
5), the experimental data that collates the minutes, tabulation, and draw the load curve figure that lifting jack rises, descends is obtained the mean value between two curves, this mean value is this bearing load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102011632A CN102346099A (en) | 2011-07-19 | 2011-07-19 | Method for correcting load jacking experiment of marine shaft system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102011632A CN102346099A (en) | 2011-07-19 | 2011-07-19 | Method for correcting load jacking experiment of marine shaft system |
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| CN102346099A true CN102346099A (en) | 2012-02-08 |
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| CN2011102011632A Pending CN102346099A (en) | 2011-07-19 | 2011-07-19 | Method for correcting load jacking experiment of marine shaft system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106940169A (en) * | 2016-01-05 | 2017-07-11 | 武汉理工大学 | A kind of shafting jacking data acquisition and processing unit |
| CN108519185A (en) * | 2018-04-11 | 2018-09-11 | 渤海造船厂集团有限公司 | A kind of shafting load measuring based on mechanical meaurement |
| CN109060352A (en) * | 2018-10-22 | 2018-12-21 | 浙江国际海运职业技术学院 | The bearing load test technology of shafting |
| CN109084875A (en) * | 2018-06-29 | 2018-12-25 | 浙江海洋大学 | One kind being used for marine shafting weighing device |
| CN109483463A (en) * | 2018-10-29 | 2019-03-19 | 中船黄埔文冲船舶有限公司 | A kind of installation of dissection type roller intermediate bearing and bearing load detection method |
| CN109827688A (en) * | 2019-01-31 | 2019-05-31 | 武汉船用机械有限责任公司 | The measurement method of bearing support reaction |
| CN110426193A (en) * | 2019-08-15 | 2019-11-08 | 广州文冲船厂有限责任公司 | A kind of marine propulsion shafting load-measuring device |
| CN110501161A (en) * | 2019-09-10 | 2019-11-26 | 哈尔滨工程大学 | A kind of rotor bearing load automatic measurement method |
| CN110672245A (en) * | 2019-10-16 | 2020-01-10 | 南通中远海运川崎船舶工程有限公司 | Automatic measuring device for load of marine main engine shafting bearing and using method thereof |
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| US5906523A (en) * | 1997-08-14 | 1999-05-25 | Thordon Bearings Inc. | Intermediate marine bearing with itegrated alignment system |
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| CN201508257U (en) * | 2009-09-04 | 2010-06-16 | 广州中船龙穴造船有限公司 | Automatic shafting bearing load measuring device for ship |
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2011
- 2011-07-19 CN CN2011102011632A patent/CN102346099A/en active Pending
Patent Citations (4)
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| US5906523A (en) * | 1997-08-14 | 1999-05-25 | Thordon Bearings Inc. | Intermediate marine bearing with itegrated alignment system |
| JP2007256202A (en) * | 2006-03-24 | 2007-10-04 | Mitsui Eng & Shipbuild Co Ltd | Bearing load-measuring device of marine diesel engine |
| CN101407247A (en) * | 2008-11-19 | 2009-04-15 | 渤海船舶重工有限责任公司 | Shipping shafting centering and main unit load measuring methods |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106940169A (en) * | 2016-01-05 | 2017-07-11 | 武汉理工大学 | A kind of shafting jacking data acquisition and processing unit |
| CN108519185A (en) * | 2018-04-11 | 2018-09-11 | 渤海造船厂集团有限公司 | A kind of shafting load measuring based on mechanical meaurement |
| CN109084875A (en) * | 2018-06-29 | 2018-12-25 | 浙江海洋大学 | One kind being used for marine shafting weighing device |
| CN109060352A (en) * | 2018-10-22 | 2018-12-21 | 浙江国际海运职业技术学院 | The bearing load test technology of shafting |
| CN109483463A (en) * | 2018-10-29 | 2019-03-19 | 中船黄埔文冲船舶有限公司 | A kind of installation of dissection type roller intermediate bearing and bearing load detection method |
| CN109827688A (en) * | 2019-01-31 | 2019-05-31 | 武汉船用机械有限责任公司 | The measurement method of bearing support reaction |
| CN110426193A (en) * | 2019-08-15 | 2019-11-08 | 广州文冲船厂有限责任公司 | A kind of marine propulsion shafting load-measuring device |
| CN110501161A (en) * | 2019-09-10 | 2019-11-26 | 哈尔滨工程大学 | A kind of rotor bearing load automatic measurement method |
| CN110672245A (en) * | 2019-10-16 | 2020-01-10 | 南通中远海运川崎船舶工程有限公司 | Automatic measuring device for load of marine main engine shafting bearing and using method thereof |
| CN110672245B (en) * | 2019-10-16 | 2021-03-16 | 南通中远海运川崎船舶工程有限公司 | Automatic measuring device for load of marine main engine shafting bearing and using method thereof |
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Application publication date: 20120208 |