CN102442406A - Method for fixing marine main engine with accurate positioning and firm locking - Google Patents
Method for fixing marine main engine with accurate positioning and firm locking Download PDFInfo
- Publication number
- CN102442406A CN102442406A CN2010102974630A CN201010297463A CN102442406A CN 102442406 A CN102442406 A CN 102442406A CN 2010102974630 A CN2010102974630 A CN 2010102974630A CN 201010297463 A CN201010297463 A CN 201010297463A CN 102442406 A CN102442406 A CN 102442406A
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- main engine
- bolt
- marine
- main frame
- chassis
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Abstract
The invention discloses a method for fixing a marine main engine with accurate positioning and firm locking and belongs to a method of marine mechanical mounting in marine building and repairing. The method is characterized by comprising the following steps: simultaneously drilling and then reaming an engine leg of the main engine and a main engine seat on the main engine when the marine main engine is positioned; processing the outer diameter of a bolt and screw threads according to the dimension after reaming, wherein the outer diameter of the bolt is 0.005-0.015mm greater than that after reaming; freezing the bolt; and taking the frozen bolt out, putting the frozen bolt into a hole which is subjected to reaming for the engine leg of the main engine and the main engine seat simultaneously, and locking the engine leg of the main engine and the main engine leg by use of a nut after a gasket is sleeved on the screw threads at the head part of the bolt. Because the most common principle of expansion and contraction is utilized for the method provided by the invention, the principle is cited to the mounting of the marine main engine, thus not only can the external diameter of the bolt be greater than that matched with the bolt, but also the bolt can be installed in the hole smoothly without displacement and the like; and the assembling method provided by the invention is simple, the operation is simple and convenient, and the service life of the marine main engine fixed by the method can be prolonged by 2-3 times compared with that of the marine main engine fixed by the original assembling method.
Description
Technical field
The present invention relates to the method that ship machinery is installed in shipbuilding or the shiprepair, the fixing means of the marine main engine that a kind of specifically accurate positioning locking is firm.
Background technology
The installation of existing marine main engine is with behind the main frame location, and fraising after at the scene main frame under-chassis, cushion block and main engine bed being holed simultaneously with the magnet base bench drill is according to fraising back dimensioned reamer bolt.Traditional fit system is a transition fit, with hammer bolt is beaten into during installation, and its shortcoming is a difficult installation, the poor reliability of location.Therefore, in use can cause the displacement of main frame, bring many inconvenience for the boats and ships of cruising.For this reason, must overcome.
Summary of the invention
In order to overcome the foot of prior art, the objective of the invention is to provide a kind of fixing means of locating absolutely accurate and locking firm marine main engine.
The technical solution adopted for the present invention to solve the technical problems is: the fixing means of the marine main engine that a kind of accurate positioning locking is firm is characterized in that:
1, behind the marine main engine location, at the scene the main engine bed on main frame under-chassis, cushion block and the main frame is holed simultaneously with the magnet base bench drill, then fraising;
2, the processing of bolt: the size according to after the fraising is carried out the processing of bolt external diameter and screw thread, wherein the aperture big 0.005～0.015mm of bolt external diameter after than main frame under-chassis and main engine bed, cushion block fraising;
3, bolt is implemented freezing, chilling temperature is subzero 4～20 degree, and general freezing time is 4 hours;
4, take out bolt after freezing, put into the hole that main frame under-chassis and main engine bed ream simultaneously at once, and with nut main frame under-chassis and main engine bed being locked behind the screw collar Upper gasket of bolt head.
Described bolt external diameter processing back is the respective aperture corresponding to Φ 25～Φ 45 greater than the aperture 0.005～0.015mm that has reamed.
Described bolt is freezing can be positioned over freezer or place dry ice to carry out freezing.
According to said method main frame and the main engine bed after the assembling recovers can combine tightly after the normal temperature at bolt, can not produce displacement etc.
The invention has the beneficial effects as follows: because the present invention has utilized the general principle that expands with heat and contract with cold, it is referred among the installation of marine main engine, so both can make the bolt external diameter bigger, can successfully install in the hand-hole again than the external diameter that is mated.Therefore, assembly method of the present invention is not only simple, and easy and simple to handle, and can improve 2～3 times of service lifes than former assembly method.
The specific embodiment
Embodiment 1:
1, behind the main frame location, at the scene main frame under-chassis, cushion block and main engine bed are holed simultaneously with the magnet base bench drill, the back fraising, the internal diameter after the fraising is 38.00mm.
2, the processing of bolt: the processing of bolt external diameter and screw thread is carried out in the aperture according to after the fraising, and wherein the external diameter after the bolt processing is than the big 0.01mm in aperture, i.e. 38.01mm;
3, bolt is implemented freezing, chilling temperature be subzero 15 the degree, freezing time is 4 hours;
4, take out bolt after freezing, put into the hole at once, and with nut main frame under-chassis and main engine bed being locked behind the screw collar Upper gasket of bolt head.
Claims (2)
1. the fixing means of the firm marine main engine of accurate positioning locking is characterized in that:
1) behind the marine main engine location, at the scene the main engine bed on main frame under-chassis, cushion block and the main frame is holed simultaneously with the magnet base bench drill, then fraising;
2) processing of bolt: the size according to after the fraising is carried out the processing of bolt external diameter and screw thread, wherein the aperture big 0.005～0.015mm of bolt external diameter after than main frame under-chassis and main engine bed, cushion block fraising;
3) bolt is implemented freezing, chilling temperature is subzero 4～20 degree, and general freezing time is 4 hours;
4) take out bolt after freezing, put into the hole that main frame under-chassis and main engine bed ream simultaneously at once, and with nut main frame under-chassis and main engine bed being locked behind the screw collar Upper gasket of bolt head.
2. the fixing means of the marine main engine that a kind of accurate positioning locking according to claim 1 is firm is characterized in that: described bolt external diameter processing back is the respective aperture corresponding to Φ 25～Φ 45 greater than the aperture 0.005～0.015mm that has reamed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102974630A CN102442406A (en) | 2010-09-30 | 2010-09-30 | Method for fixing marine main engine with accurate positioning and firm locking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102974630A CN102442406A (en) | 2010-09-30 | 2010-09-30 | Method for fixing marine main engine with accurate positioning and firm locking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102442406A true CN102442406A (en) | 2012-05-09 |
Family
ID=46005448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102974630A Pending CN102442406A (en) | 2010-09-30 | 2010-09-30 | Method for fixing marine main engine with accurate positioning and firm locking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102442406A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103507914A (en) * | 2013-09-12 | 2014-01-15 | 南通明德重工有限公司 | Installation process for ship body generator set |
| CN104097024A (en) * | 2014-07-11 | 2014-10-15 | 北车兰州机车有限公司 | Transmission pin fitting method and device and drain bucket |
| CN104527922A (en) * | 2014-11-27 | 2015-04-22 | 沪东中华造船(集团)有限公司 | Accurate positioning method of anchor bolt hole 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 |
| 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 |
-
2010
- 2010-09-30 CN CN2010102974630A patent/CN102442406A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103507914A (en) * | 2013-09-12 | 2014-01-15 | 南通明德重工有限公司 | Installation process for ship body generator set |
| 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 |
| CN104097024A (en) * | 2014-07-11 | 2014-10-15 | 北车兰州机车有限公司 | Transmission pin fitting method and device and drain bucket |
| CN104527922A (en) * | 2014-11-27 | 2015-04-22 | 沪东中华造船(集团)有限公司 | Accurate positioning method of anchor bolt hole of marine main engine |
| CN104527922B (en) * | 2014-11-27 | 2017-02-22 | 沪东中华造船(集团)有限公司 | Accurate positioning method of anchor bolt hole of marine main engine |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120509 |