CN101376431B - Method for mounting main unit with resilient support - Google Patents
Method for mounting main unit with resilient support Download PDFInfo
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- CN101376431B CN101376431B CN2008102006609A CN200810200660A CN101376431B CN 101376431 B CN101376431 B CN 101376431B CN 2008102006609 A CN2008102006609 A CN 2008102006609A CN 200810200660 A CN200810200660 A CN 200810200660A CN 101376431 B CN101376431 B CN 101376431B
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- main engine
- main frame
- snubber block
- resilient mounting
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Abstract
The invention discloses an installation method of a main engine with an elastic support, the main engine comprises a main engine carrier block and a main engine base, the main engine carrier block is connected with the main engine base through the elastic support, and the elastic support comprises a vertical shock absorbing block, a side shock absorbing block and a longitudinal shock absorbing block. The elastic support is arranged between the main engine carrier block and the base, and the vibration generated during the operation of the main engine is absorbed by a rubber damping device of the rubber shock absorbing block, so that the vibration and the noise are weakened. The use of the installation method can shorten the overall installation period of the ship main engine and greatly enhance the progress. The method is applicable to ships with higher requirements on the ship noise and the vibration indicators, so as to obtain good working and living environment of the ships and the comfort of passengers.
Description
Technical field
The invention belongs to the ship building technical field, particularly relate to a kind of marine main engine installation method with resilient mounting.
Background technology
Main frame is as the heart of marine propuision system, and it rationally installs with the promote comprehensively control and the ship building period of efficient, vibration noise of full ship closely bound up.
China adopts steel plate washer or Epoxy Resin Gasket to carry out main frame at present usually and installs.Hull construction satisfies baseline can determine after, result according to the backguy irradiation locatees the welding main engine seating, be technology positioning host in the reasonable school according to axle again behind the following water, according to the relative position brush steel plate washer or the casting epoxy pad of pedestal and hull, use main frame holding-down bolt, thrust terminator and the final installing and locating of top stay bolt then.Epoxy Resin Gasket is because functional and convenient and quick construction has become current main flow.But adopt rigid gasket that the vibration of main frame is born by the hull pedestal fully, the ship vibration amplitude is bigger on every side to cause main frame, can have influence on the vibration control of superstructure life zone even full ship when serious, and the boats and ships noise is very big.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of main frame installation method with resilient mounting, and to overcome the above-mentioned defective that prior art exists, the main frame that utilizes this method to install can satisfy the index request of boats and ships noise and vibration well.
The technical scheme of technical solution problem of the present invention is as follows:
A kind of marine main engine installation method with resilient mounting, described main frame comprises main frame stand and main engine seating, it is characterized in that: be connected by resilient mounting between described main frame stand and the main engine seating, described resilient mounting comprises vertical snubber block, side direction snubber block and vertical snubber block, and it comprises following installation steps:
(1), according to the result of shafting alignment, with the interim installation site of making gear case and main frame of supporting;
(2), processing main engine seating plane, snubber block bolt mounting holes and tapping;
(3), measure, the support pad under the vertical snubber block of processing, and fix with screw bolt and nut;
(4), vertical snubber block and tighten with check screw is installed;
(5), installation side to the longitudinal ligament framework, installation side to vertical snubber block;
(6), high elastic coupling between protective cover, main frame gear case is installed;
(7), press the distance of the main frame stand at 4 angles of period measurement main frame to pedestal, lateral support plate and longitudinal ligament plate;
(8), each external hose of main frame, freeing pipe are installed.
By adopting installation method of the present invention that main frame is installed, absorbed by the rubber damping device of elastic shock attenuation piece because main frame moves the vibration that produces, thereby realize weakening of vibration and noise.Adopt the present invention that the marine main engine integral installation cycle is shortened, progress can improve greatly.This method is applicable to boats and ships noise and the higher boats and ships of vibration index request (as luxurious passenger steamer etc.), to obtain boats and ships good operation living environment and travelling comfort.
Description of drawings
Fig. 1 is the resilient mounting distribution schematic diagram at two angles of main frame of the present invention;
Fig. 2 a～Fig. 2 b is the scheme drawing that the vertical snubber block of the present invention is installed;
Fig. 3 a～Fig. 3 b is the appearance structure scheme drawing of two kinds of elastic shock attenuation pieces;
Fig. 4 is the scheme drawing that the present invention measures the snubber block height.
The specific embodiment
Come the concrete application of the main frame installation method of band resilient mounting is further described below in conjunction with accompanying drawing and specific embodiment, but should be not therefore and restriction protection scope of the present invention.
Be example with certain high new product below, specify a kind of marine main engine installation method of the present invention with elastic shock attenuation piece and resilient mounting, as depicted in figs. 1 and 2, main frame comprises main frame stand 1 and main engine seating 2, be connected by resilient mounting 3 between main frame stand and the main engine seating, described resilient mounting comprises vertical snubber block 31, side direction snubber block 32 and vertical snubber block 33, and it comprises following installation steps:
1,, uses the interim installation site of making gear case and main frame of supporting according to the result of shafting alignment
The horizontality that should keep boats and ships when resilient mounting is the elastic shock attenuation piece is as far as possible being located and installed to main frame.
When shafting alignment, except must consideration need adjusting to the pressure that each bearing bore in the axle system within the limits prescribed, simultaneously, also must consider because when adjusting each bearing load, the position of each bearing is different with the meeting of initial theoretical position; Especially the position of gear case height can determine main frame from now on during centering the thickness of pad whether meet the demands.
Axle ties up to and carries out centering when work, should monitor gear case and main frame centering position from now on, and whether the spacer thickness of especially considering main engine seating is within the scope of controlling.Unpredictability during for minimizing main frame centering location is necessary that prior height to main engine seating carries out suitable reduction.From hull construction error angle, the scene has reduced 20mm with main engine seating aspect ratio theoretical value.Because main frame and gear case adopt whole pedestal, base height decline causes the bigger increase of spacer thickness of gear case, with the support pad THICKNESS CONTROL of elastic shock attenuation piece bottom within 25mm～74mm scope.
2, plane on the processing main engine seating 2, pneumatic brill is fixed on the mounting hole of main frame stand 1, get out the bolt mounting holes of resilient mounting with pneumatic brill, pneumatic drill bit is mixed flat scraper scrape horizontal surface at main engine seating 2 upper surfaces, the upper surface of described main engine seating (2) is used for installing the support steel plate washer 4 under the resilient mounting 3, at last pneumatic drill bit is mixed screw tap bolt mounting holes is carried out tapping;
3, measure, process the support pad under the vertical snubber block, and fix with screw bolt and nut;
The elastic shock attenuation piece does not need prior precompressed compression, and it is the snubber block height of the factor of amount of compression and creep compliance after installation and needed in the main frame supporting planchet piece of processing in advance consideration in addition.
In order to guarantee main frame body support plane and main engine seating plane basically identical, the cradle under each elastic shock attenuation piece is according to the main frame erection plan and be processed into differing heights according to the various computing formula and install.All elastic shock attenuation pieces and resilient mounting must number and measure the technical parameters such as height at each snubber block, each installation snubber block position in advance, and perform forms and records one to one before installation.
As shown in Figure 3, the computing formula of the snubber block height C after two kinds of compressions is:
1. be depicted as RK368 type snubber block as Fig. 3 a, d is a top plate thickness among the figure
C=snubber block free height-top plate thickness-spacer thickness-snubber block amount of compression-creep compliance;
2. RK268 type snubber block shown in Fig. 3 b, d is a top plate thickness among the figure
C=supporting pad thickness+snubber block free height-top plate thickness-spacer thickness-snubber block amount of compression-creep compliance;
The height of lip block is h=B-C,
B is that each snubber block place main frame base upper surface is to the distance between the pedestal polishing back plane.
4, vertical snubber block and tighten with check screw being installed, is type snubber block shown in Fig. 3 a for the Type B snubber block, also will be by the vertical elastomer block 34 of installation as Fig. 2 b as shown in;
Measuring and noting down one by one in form installation place pedestal upper surface and main frame base lower surface apart from B, distance maximum in theory can not surpass 85mm, can not be less than 36mm, practical limit can not be less than 26mm, and maximum should not surpass 5mm apart from difference everywhere.If difference surpasses 5mm, then must adopt cooresponding steel cushion block respectively, can whenever adjacent five one group process respectively, carry out mark on the cushion block.
Before vertical snubber block does not install (the complete free state of main frame drops on the vertical snubber block), side direction and vertically interim support are non-disconnectable.
5, installation side to the longitudinal ligament framework, installation side to vertical snubber block
Formal lateral support framework is installed, its frame plane must with host computer side to the frame keeping parallelism.
After the compression of main frame snubber block finished, main frame will satisfy host center with the relative center of gear case and exceed gear case 1.65～2mm, because the service life of creep compliance reflection elastic shock attenuation piece.
6, high elastic coupling between protective cover, main frame gear case is installed;
7, press V, L, the T value at 4 angles of period measurement main frame;
After elastic shock attenuation piece (vertical) and resilient mounting (side/vertically) are all finished, must be in main frame four angular measurement V, T, L value.V, T, L value are the distance of main frame stand to pedestal, lateral support plate, longitudinal ligament plate.Attention is set up permanent marker point at the initial measurement place so that measure at same position in the future, send main frame supplier for future reference per two months of shipyard to V, L, the T value line item of once going forward side by side.In addition, after trial voyage or flight finishes, must check V, L, T value; If any bigger variation, still need elastic shock attenuation piece and resilient mounting are finely tuned.
Because the elastic shock attenuation piece is along with the time is constantly compressed, and the main frame position is changed.V, T, L value have reflected respectively that main frame is vertical, side direction, the vertical deflection of snubber block.In order to ensure the main frame steady running, four angles need kept in balance, then need the distortion larger part is compensated adjustment.Adjust main frame by on the elastic shock attenuation piece, inserting steel plate washer, guarantee in the scope that is centered in permission of main frame and gear case.
8, each external hose of main frame, freeing pipe are installed;
Because the main frame base adopts elastic shock attenuation piece installation form, so the main exhaust pipe adopts eccentric installation form with being connected of main frame blwr, in the actual installation process, because freeing pipe expansion pipe one end is a free flange, one end is the quincunx flange of casting, especially free flange and this body space of expansion pipe have 2～3mm, and because main engine bed is on the elastic shock attenuation piece, and the impossible level fully of the ship appearance of boats and ships in the floading condition state, when about occurring, inclining, this cognition of main frame also is insignificant to a certain direction slight inclination so accurate measurement is in this state installed.From the condition of actual installation, certain eccentric trend is arranged as long as the main exhaust pipe is connected with the eccentric installation form of main frame blwr; Its numerical value should be integral value, and too accuracy control is also unnecessary in practical operation.
As the improvement to such scheme, main frame will turn retaining according to different phase measuring main frames in installation process, generally needs three times, and adjusts the elastic shock attenuation piece as required, guarantees to turn retaining and satisfies the makers' requirement of main frame.
Undoubtedly, the marine main engine installation method of band elastic shock attenuation piece of the present invention and resilient mounting not only is confined to step described in the foregoing description and process, in addition other variation and alternative.Generally speaking, the protection domain of the main frame installation method of band resilient mounting of the present invention also comprises other conspicuous for those skilled in the art conversion and substitutes.
Claims (3)
1. marine main engine installation method with resilient mounting, described main frame comprises main frame stand (1) and main engine seating (2), it is characterized in that: be connected by resilient mounting (3) between described main frame stand (1) and the main engine seating (2), described resilient mounting comprises vertical snubber block (31), side direction snubber block (32) and vertical snubber block (33), and it comprises following installation steps:
(1), according to the result of shafting alignment, with the interim installation site of making gear case and main frame of supporting;
(2), processing main engine seating plane, snubber block bolt mounting holes and tapping;
(3), measure, the support pad under the vertical snubber block of processing, and fix with screw bolt and nut;
(4), vertical snubber block and tighten with check screw is installed;
(5), installation side to the longitudinal ligament framework, installation side to vertical snubber block;
(6), high elastic coupling between protective cover, main frame gear case is installed;
(7), press the distance of the main frame stand at 4 angles of period measurement main frame to pedestal, lateral support plate and longitudinal ligament plate;
(8), each external hose of main frame, freeing pipe are installed.
2. the marine main engine installation method of band resilient mounting according to claim 1, it is characterized in that, said step (2) comprises the steps: to process main engine seating (2) and goes up the plane, pneumatic brill is fixed on the mounting hole of main frame stand (1), get out the bolt mounting holes of resilient mounting with pneumatic brill, pneumatic drill bit is mixed flat scraper scrape horizontal surface at main engine seating (2) upper surface, the upper surface of described main engine seating (2) is used for installing the support steel plate washer (4) under the resilient mounting (3), at last pneumatic drill bit is mixed screw tap bolt mounting holes is carried out tapping.
3. the marine main engine installation method of band resilient mounting according to claim 1 is characterized in that, in the said step (5), when formal lateral support framework was installed, its frame plane and host computer side were to the frame keeping parallelism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102006609A CN101376431B (en) | 2008-09-27 | 2008-09-27 | Method for mounting main unit with resilient support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102006609A CN101376431B (en) | 2008-09-27 | 2008-09-27 | Method for mounting main unit with resilient support |
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| Publication Number | Publication Date |
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| CN101376431A CN101376431A (en) | 2009-03-04 |
| CN101376431B true CN101376431B (en) | 2010-09-08 |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2671791B1 (en) * | 2012-06-04 | 2018-07-18 | Caterpillar Motoren GmbH & Co. KG | Damped engine support |
| CN103507914B (en) * | 2013-09-12 | 2016-05-25 | 南通润力机械制造有限公司 | For the mounting process of hull generating set |
| CN104071325B (en) * | 2014-06-26 | 2016-06-29 | 江苏省镇江船厂（集团）有限公司 | Marine main engine support based on quietness technology and elastic shock attenuation |
| CN104443338B (en) * | 2014-11-13 | 2017-02-15 | 浙江海洋学院 | Novel electric propulsion device |
| WO2016085834A1 (en) * | 2014-11-25 | 2016-06-02 | Gleason Metrology Systems Corporation | Machine vibration isolation |
| CN107651101A (en) * | 2017-09-21 | 2018-02-02 | 南通如港船舶配套机械有限公司 | A kind of fixing means of marine main engine |
| CN107571984A (en) * | 2017-09-22 | 2018-01-12 | 南通如港船舶配套机械有限公司 | A kind of accurate fixing means |
| CN107651103A (en) * | 2017-09-22 | 2018-02-02 | 南通如港船舶配套机械有限公司 | The fixing means of firm marine main engine is locked in a kind of accurate positioning |
| CN111498051B (en) * | 2020-04-17 | 2021-05-11 | 中船黄埔文冲船舶有限公司 | Ship main engine epoxy pouring tool and using method |
| CN111746751A (en) * | 2020-06-29 | 2020-10-09 | 沪东中华造船(集团)有限公司 | High-precision installation method for marine main engine |
| CN113232820A (en) * | 2021-05-08 | 2021-08-10 | 舟山中远海运重工有限公司 | Vibration damper of marine main engine and manufacturing method |
| CN114658797B (en) * | 2022-02-24 | 2023-09-05 | 中船澄西船舶修造有限公司 | Lateral thrust vibration reduction structure and thrust vibration reduction method for ship auxiliary machine |
| CN114701619B (en) * | 2022-03-10 | 2023-06-16 | 江南造船(集团)有限责任公司 | Main machine positioning and installing method based on total section construction |
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