CN113071978A - Eccentric lifting appliance and lifting method for exhaust valve of cylinder cover of marine high-pressure dual-fuel main engine - Google Patents
Eccentric lifting appliance and lifting method for exhaust valve of cylinder cover of marine high-pressure dual-fuel main engine Download PDFInfo
- Publication number
- CN113071978A CN113071978A CN202110280393.6A CN202110280393A CN113071978A CN 113071978 A CN113071978 A CN 113071978A CN 202110280393 A CN202110280393 A CN 202110280393A CN 113071978 A CN113071978 A CN 113071978A
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- Prior art keywords
- exhaust valve
- eccentric
- cylinder cover
- lifting
- valve assembly
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/06—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The eccentric lifting appliance comprises a lifting plate, lifting bolts, connecting bolts, a plug pin and a fixing bolt, wherein the lifting plate comprises a horizontal transverse plate part and a vertical plate part extending downwards from one end of the transverse plate part, the connecting bolts penetrate through the transverse plate part and are connected with threaded holes in the top of the exhaust valves, the plug pin penetrates through the vertical plate part and is inserted into a hydraulic pipe mounting hole of the exhaust valves, the fixing bolts penetrate through the vertical plate part and are connected with the threaded holes in the hydraulic pipe mounting hole of the exhaust valves, so that the eccentric lifting appliance is fixedly connected with an exhaust valve assembly of a cylinder cover, the lifting bolts are fixedly connected with the transverse plate part through threads, the connecting position is located above the gravity center of the exhaust valve assembly of the cylinder cover, and the eccentric lifting appliance stably and safely lifts the exhaust valve assembly of the cylinder cover with a gas control block through the lifting bolts. The invention solves the problem of the influence of eccentricity on lifting caused by the gas control block, and effectively improves the lifting stability and safety of the cylinder cover exhaust valve assembly with the gas control block.
Description
Technical Field
The invention relates to hoisting of diesel engine parts, in particular to an eccentric hoisting tool and a hoisting method for a marine high-pressure dual-fuel main engine cylinder cover exhaust valve, and belongs to the technical field of marine diesel engine manufacturing.
Background
With the gradual progress of international emission regulations into the ttii era, manufacturers of marine low-speed diesel engines have introduced dual-fuel hosts capable of simultaneously using diesel oil and natural gas in order to solve the emission problem, and at the same time, pipeline systems for natural gas are added to the hosts. The high-pressure dual-fuel main engine, namely the GI main engine, which is released by MAN manufacturer, adopts a structural form that the fuel gas control block is arranged on the cylinder cover, and the gravity center of the whole cylinder cover exhaust valve assembly deviates to one side close to the control block from the center position due to the fact that the fuel gas control block has larger weight. If the original mode of lifting by using lifting bolts on the exhaust valve is adopted, the whole cylinder cover exhaust valve assembly is unbalanced after being lifted due to eccentricity, and then other parts can be collided in the lifting process, so that the safety of the whole lifting operation is reduced.
Disclosure of Invention
The invention aims to provide an eccentric lifting appliance and a lifting method of a marine high-pressure dual-fuel main engine cylinder cover exhaust valve, aiming at a cylinder cover exhaust valve assembly with a gas control block of a MAN series GI main engine, solving the problem of eccentricity caused by lifting by using an exhaust valve with a lifting ring screw, eliminating the inclination of the cylinder cover exhaust valve assembly during lifting, ensuring the stability and reliability of the dual-fuel main engine cylinder cover exhaust valve assembly during lifting, and achieving the effect of improving the operation efficiency.
The technical scheme of the invention is as follows:
an eccentric lifting appliance of a marine high-pressure dual-fuel host cylinder cover exhaust valve is connected to a cylinder cover exhaust valve assembly, the cylinder cover exhaust valve assembly comprises an exhaust valve and a fuel gas control block, and a top threaded hole, a hydraulic pipe mounting hole and a hydraulic pipe mounting threaded hole are formed in the exhaust valve; the method is characterized in that: eccentric hoist includes hanger plate, eyebolt, connecting bolt, bolt and fixing bolt, the hanger plate is including horizontally diaphragm portion and by the one end downwardly extending's of this diaphragm portion riser portion, connecting bolt passes the diaphragm portion with discharge valve's top screw hole is connected, the bolt passes riser portion inserts discharge valve's hydraulic pressure pipe mounting hole, fixing bolt passes the riser portion with discharge valve's hydraulic pressure pipe mounting screw hole is connected, thereby will eccentric hoist with cylinder cap discharge valve assembly fixed connection, eyebolt pass through the screw thread with diaphragm portion fixed connection, hookup location is in cylinder cap discharge valve assembly's centrobaric top, eccentric hoist will through this eyebolt cylinder cap discharge valve assembly lifts by crane steadily safely.
Furthermore, the transverse plate part of the hanging plate is provided with a fixing through hole for passing through the connecting bolt and a hanging ring threaded hole for connecting the hanging ring bolt, and the vertical plate part is provided with a pin hole for passing through the pin bolt and a fixing hole for passing through the fixing bolt.
Furthermore, the vertical plate portion is provided with a large storage threaded hole for connecting the connecting bolt and a small storage threaded hole for connecting the fixing bolt.
The other technical scheme of the invention is as follows:
a hoisting method of a marine high-pressure dual-fuel host cylinder cover exhaust valve realized by adopting the eccentric sling comprises the following steps:
1) on the cylinder cover exhaust valve assembly with the gas control block installed, the original self-provided screw on the cylinder cover exhaust valve is removed;
2) placing a lifting plate of the eccentric lifting appliance on the top of the exhaust valve, enabling the connecting bolt to penetrate through the fixing through hole to be screwed with a threaded hole in the top of the exhaust valve, simultaneously inserting the bolt into a hydraulic pipe mounting hole of the exhaust valve through the pin hole, enabling the fixing bolt to penetrate through the fixing hole to be connected with the hydraulic pipe mounting threaded hole of the exhaust valve, and fastening the eccentric lifting appliance and the exhaust valve assembly of the cylinder cover together;
3) the cylinder cover exhaust valve assembly with the fuel gas control block is stably and safely hoisted through the eccentric hoisting tool;
4) after the hoisting is finished, the eccentric lifting appliance is detached from the cylinder cover exhaust valve assembly, the connecting bolt and the fixing bolt are detached and screwed into the large storage threaded hole and the small storage threaded hole of the lifting plate respectively for storage.
Compared with the prior art, the invention has the following technical effects:
the lifting point of the eccentric lifting appliance is arranged right above the center of gravity of the cylinder cover exhaust valve assembly, so that the eccentric problem caused by the fact that the mounting position of the gas control block is not positioned on the center of the cylinder cover exhaust valve assembly is solved, the center of gravity movement caused by the gas control block is compensated, and the lifting stability of the cylinder cover exhaust valve assembly is improved.
Secondly, due to the adoption of the eccentric lifting appliance, the possible part damage caused by unstable lifting is reduced, and the safety of lifting operation is greatly improved.
And the eccentric lifting appliance body is provided with a threaded hole for storing the connecting bolt, so that the loss risk of the connecting bolt is reduced.
In a word, the invention solves the problem of the influence of eccentricity on lifting caused by the gas control block, and effectively improves the lifting stability and safety of the cylinder cover exhaust valve assembly with the gas control block.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a schematic structural view of the hanger plate.
Fig. 4 is a schematic view of the state of use of the present invention.
In the figure: 1-lifting ring screw, 2-lifting plate, 21-fixing through hole, 22-lifting ring threaded hole, 23-large storage threaded hole, 24-fixing hole, 25-small storage threaded hole, 26-pin hole, 3-connecting bolt, 4-bolt, 5-fixing bolt, 01-eccentric lifting appliance and 02-cylinder cover exhaust valve assembly.
The specific implementation mode is as follows:
the eccentric sling and the lifting method for exhaust valve of cylinder head of marine high-pressure dual-fuel main engine according to the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments, but the present invention should not be construed as being limited by the eccentric sling and the lifting method.
The invention provides an eccentric lifting appliance and a lifting method of a marine high-pressure dual-fuel main engine cylinder cover exhaust valve according to the characteristic that a GI main engine gas control block is arranged on one side of a cylinder cover and the thread strength of the exhaust valve with a lifting eye screw is enough.
Furthermore, in order to improve the safety and reliability of the eccentric lifting appliance, a bolt and a fixing bolt are arranged by means of a hole and a thread which are used for installing a hydraulic pipe of the exhaust valve on the exhaust valve head, and the lower part of the exhaust valve is further fixed, so that the lifting appliance is prevented from deflecting in the lifting process. Because this eccentric hoist uses threaded connection more, consequently set up the partial screw hole of depositing on eccentric hoist, be used for the screw in to preserve under the condition that the bolt does not use to promote the integrality of whole instrument, reduce the risk that the bolt loses.
The invention is used for hoisting a cylinder cover exhaust valve assembly of a marine high-pressure dual-fuel host machine, the cylinder cover exhaust valve assembly comprises an exhaust valve and is provided with a fuel gas control block, and the exhaust valve is provided with a top threaded hole, a hydraulic pipe mounting hole and a hydraulic pipe mounting threaded hole.
Examples
Referring to fig. 1 and 2, the eccentric sling includes a hanging plate 2, an eye screw 1, a connecting bolt 3, a bolt 4 and four fixing bolts 5.
Referring to fig. 3, the hanger plate 2 includes a horizontal plate portion and a vertical plate portion extending downward from one end of the horizontal plate portion. The transverse plate part is provided with a fixing through hole 21 for passing through the connecting bolt 3 and a lifting ring threaded hole 22 for connecting the lifting ring screw 1, and the vertical plate part is provided with a pin hole 26 for passing through the bolt 4 and four fixing holes 24 for passing through the fixing bolt 5.
The lifting point of the eccentric lifting appliance is the lifting ring screw 1, and the lifting ring screw 1 is screwed into a lifting ring threaded hole 22 on the lifting plate 2; the connecting bolt 3 is screwed into the top threaded hole and used for connecting the eccentric lifting appliance with the exhaust valve, when the eccentric lifting appliance is used, the bolt 4 is inserted into a hydraulic pipe mounting hole which is formed in the exhaust valve and used for mounting a hydraulic pipe of the exhaust valve, the fastening bolt 5 is connected with a hydraulic pipe mounting threaded hole which is used for mounting the hydraulic pipe of the exhaust valve and used for connecting the eccentric lifting appliance with the exhaust valve, and the reliability of the eccentric lifting appliance is further improved.
The transverse plate part of the hanging plate 2 is provided with a large storage threaded hole 23 and four small storage threaded holes 25, and the connecting bolt 3 and the fixing bolt 5 are respectively screwed in and stored when the eccentric hanging tool is not used, so that the eccentric hanging tool is prevented from being lost.
The connection position of the lifting ring screw 1 and the lifting plate 2 is determined according to the calculated gravity center position of the cylinder cover exhaust valve assembly with the gas control block, the connection position is positioned above the gravity center of the cylinder cover exhaust valve assembly, and the eccentric lifting appliance stably and safely lifts the cylinder cover exhaust valve assembly through the eccentric lifting appliance.
The hoisting method of the marine high-pressure dual-fuel main engine cylinder cover exhaust valve comprises the following specific steps:
firstly, on a cylinder cover exhaust valve assembly 02 provided with a gas control block, as shown in fig. 4, a self-provided screw on an original cylinder cover exhaust valve is removed, and the eccentric lifting appliance 01 is lifted;
placing the hanging plate 2 of the eccentric hanger 01 on the top of the exhaust valve, penetrating the connecting bolt 3 into the fixing through hole 21 on the top of the hanging plate 2, screwing the connecting bolt into the threaded hole on the top, fixedly connecting the hanging plate 2 with the exhaust valve, inserting the bolt 3 into the hydraulic pipe mounting hole on the exhaust valve, and mounting the fixing bolt 5;
thirdly, after checking and confirming that the bolts of the eccentric lifting appliance 1 are fastened, hoisting the cylinder cover exhaust valve assembly 02 with the gas control block by using the lifting bolt 1;
and fourthly, after the hoisting is finished, detaching the eccentric hoisting tool 1, detaching the connecting bolt 3 and the fixing bolt 5 at the same time, and screwing the large storage threaded hole 23 and the small storage threaded hole 25 in the hoisting plate 2 for storage.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. That is, all equivalent changes and modifications made according to the contents of the present application should be considered to be within the technical scope of the present invention.
Claims (4)
1. An eccentric lifting appliance of a marine high-pressure dual-fuel host cylinder cover exhaust valve is connected to a cylinder cover exhaust valve assembly, the cylinder cover exhaust valve assembly comprises an exhaust valve and a fuel gas control block, and a top threaded hole, a hydraulic pipe mounting hole and a hydraulic pipe mounting threaded hole are formed in the exhaust valve; the method is characterized in that: eccentric hoist includes hanger plate, eyebolt, connecting bolt, bolt and fixing bolt, the hanger plate is including horizontally diaphragm portion and by the one end downwardly extending's of this diaphragm portion riser portion, connecting bolt passes the diaphragm portion with discharge valve's top screw hole is connected, the bolt passes riser portion inserts discharge valve's hydraulic pressure pipe mounting hole, fixing bolt passes the riser portion with discharge valve's hydraulic pressure pipe mounting screw hole is connected, thereby will eccentric hoist with cylinder cap discharge valve assembly fixed connection, eyebolt pass through the screw thread with diaphragm portion fixed connection, hookup location is in cylinder cap discharge valve assembly's centrobaric top, eccentric hoist will through this eyebolt cylinder cap discharge valve assembly lifts by crane steadily safely.
2. The marine high pressure dual fuel host cylinder cap exhaust valve's eccentric hoist of claim 1 characterized in that: the transverse plate part of the hanging plate is provided with a fixing through hole used for passing through the connecting bolt and a hanging ring threaded hole used for connecting the hanging ring bolt, and the vertical plate part is provided with a pin hole used for passing through the plug pin and a fixing hole used for passing through the fixing bolt.
3. The marine high pressure dual fuel host cylinder cap exhaust valve's eccentric hoist of claim 2 characterized in that: the vertical plate part is provided with a large storage threaded hole for connecting the connecting bolt and a small storage threaded hole for connecting the fixing bolt.
4. A hoisting method of a marine high-pressure dual-fuel main engine cylinder cover exhaust valve realized by adopting the eccentric sling according to claim 3 is characterized in that: the hoisting method comprises the following steps:
1) on the cylinder cover exhaust valve assembly with the gas control block installed, the original self-provided screw on the cylinder cover exhaust valve is removed;
2) placing a lifting plate of the eccentric lifting appliance on the top of the exhaust valve, enabling the connecting bolt to penetrate through the fixing through hole to be screwed with a threaded hole in the top of the exhaust valve, simultaneously inserting the bolt into a hydraulic pipe mounting hole of the exhaust valve through the pin hole, enabling the fixing bolt to penetrate through the fixing hole to be connected with the hydraulic pipe mounting threaded hole of the exhaust valve, and fastening the eccentric lifting appliance and the exhaust valve assembly of the cylinder cover together;
3) the cylinder cover exhaust valve assembly with the fuel gas control block is stably and safely hoisted through the eccentric hoisting tool;
4) after the hoisting is finished, the eccentric lifting appliance is detached from the cylinder cover exhaust valve assembly, the connecting bolt and the fixing bolt are detached and screwed into the large storage threaded hole and the small storage threaded hole of the lifting plate respectively for storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110280393.6A CN113071978A (en) | 2021-03-16 | 2021-03-16 | Eccentric lifting appliance and lifting method for exhaust valve of cylinder cover of marine high-pressure dual-fuel main engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110280393.6A CN113071978A (en) | 2021-03-16 | 2021-03-16 | Eccentric lifting appliance and lifting method for exhaust valve of cylinder cover of marine high-pressure dual-fuel main engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113071978A true CN113071978A (en) | 2021-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110280393.6A Pending CN113071978A (en) | 2021-03-16 | 2021-03-16 | Eccentric lifting appliance and lifting method for exhaust valve of cylinder cover of marine high-pressure dual-fuel main engine |
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|---|---|
| CN (1) | CN113071978A (en) |
Citations (12)
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|---|---|---|---|---|
| CN201376841Y (en) * | 2009-04-07 | 2010-01-06 | 广西玉柴机器股份有限公司 | Sling for engine cylinder cover to process fuel injector hole |
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| CN107285188A (en) * | 2017-07-26 | 2017-10-24 | 重庆长安汽车股份有限公司 | A kind of stone tongs for lower cylinder body of engine |
| CN206814275U (en) * | 2017-05-27 | 2017-12-29 | 重庆长安汽车股份有限公司 | A kind of cylinder cap balances lifting device |
| KR20180047345A (en) * | 2016-10-31 | 2018-05-10 | 대우조선해양 주식회사 | Weight-bar assembly for cog adjustment for eccentric lifting of offshore structure and eccentric lifting method using this |
| CN207551722U (en) * | 2017-12-18 | 2018-06-29 | 北京福田康明斯发动机有限公司 | Cylinder head sling |
| CN110040624A (en) * | 2019-04-10 | 2019-07-23 | 中联重科股份有限公司 | Suspender, tackling system and hoisting method |
| CN111320067A (en) * | 2020-04-22 | 2020-06-23 | 郑州空港科锐电力设备有限公司 | Lifting appliance capable of adjusting lifting point according to gravity center position of lifted object and using method thereof |
| CN111594674A (en) * | 2020-06-16 | 2020-08-28 | 中船动力研究院有限公司 | Corrugated pipe mounting device |
| CN212127256U (en) * | 2020-03-23 | 2020-12-11 | 青岛海西重工有限责任公司 | Eccentric lifting appliance |
-
2021
- 2021-03-16 CN CN202110280393.6A patent/CN113071978A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201376841Y (en) * | 2009-04-07 | 2010-01-06 | 广西玉柴机器股份有限公司 | Sling for engine cylinder cover to process fuel injector hole |
| CN201485170U (en) * | 2009-08-25 | 2010-05-26 | 广西玉柴机器股份有限公司 | Hanger for fine cylinder boring hole on fine milling top surface of engine cylinder block |
| CN202201621U (en) * | 2011-08-05 | 2012-04-25 | 广西玉柴机器股份有限公司 | Lifting tool for engine cylinder body |
| CN203699640U (en) * | 2013-11-19 | 2014-07-09 | 中冶天工集团有限公司 | Hoisting tool for box type eccentric equipment |
| KR20180047345A (en) * | 2016-10-31 | 2018-05-10 | 대우조선해양 주식회사 | Weight-bar assembly for cog adjustment for eccentric lifting of offshore structure and eccentric lifting method using this |
| CN206814275U (en) * | 2017-05-27 | 2017-12-29 | 重庆长安汽车股份有限公司 | A kind of cylinder cap balances lifting device |
| CN107285188A (en) * | 2017-07-26 | 2017-10-24 | 重庆长安汽车股份有限公司 | A kind of stone tongs for lower cylinder body of engine |
| CN207551722U (en) * | 2017-12-18 | 2018-06-29 | 北京福田康明斯发动机有限公司 | Cylinder head sling |
| CN110040624A (en) * | 2019-04-10 | 2019-07-23 | 中联重科股份有限公司 | Suspender, tackling system and hoisting method |
| CN212127256U (en) * | 2020-03-23 | 2020-12-11 | 青岛海西重工有限责任公司 | Eccentric lifting appliance |
| CN111320067A (en) * | 2020-04-22 | 2020-06-23 | 郑州空港科锐电力设备有限公司 | Lifting appliance capable of adjusting lifting point according to gravity center position of lifted object and using method thereof |
| CN111594674A (en) * | 2020-06-16 | 2020-08-28 | 中船动力研究院有限公司 | Corrugated pipe mounting device |
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Application publication date: 20210706 |
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