CN111843891B - Fixing tool for connecting rod big end and fixing method applying same - Google Patents
Fixing tool for connecting rod big end and fixing method applying same Download PDFInfo
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- CN111843891B CN111843891B CN202010670609.5A CN202010670609A CN111843891B CN 111843891 B CN111843891 B CN 111843891B CN 202010670609 A CN202010670609 A CN 202010670609A CN 111843891 B CN111843891 B CN 111843891B
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- fixing
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- fastener
- mounting plate
- stud
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
- B25B11/02—Assembly jigs
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention discloses a fixing tool for a large end of a connecting rod and a fixing method using the fixing tool, and belongs to the technical field of auxiliary tools for assembling diesel engines. The large end of the connecting rod comprises an upper cover, a lower cover, an upper stud connected with the upper cover and a lower stud connected with the lower cover, the large end of the connecting rod is arranged on a crankshaft, and a balance block is arranged on the crankshaft; the fixing tool of connecting rod main-end, including the fixed unit that two sets of symmetries set up, fixed unit includes the fixed plate, the fixed plate include first mounting panel and with first mounting panel fixed connection's second mounting panel, first mounting panel can with go up the double-screw bolt or with the double-screw bolt is connected down, the second mounting panel can with the balancing piece is connected. According to the fixing tool for the large end of the connecting rod and the fixing method applying the fixing tool, the upper stud or the lower stud and the balance block are connected through the fixing tool, so that the large end of the connecting rod is fixed, the requirement on the dismounting space is met, and the convenience and the safety in operation are improved.
Description
Technical Field
The invention relates to the technical field of auxiliary tools for diesel engine assembly, in particular to a fixing tool for a large end of a connecting rod and a fixing method applying the fixing tool.
Background
In the maintenance process of the diesel engine, the disassembly and assembly of heavy and complex parts such as the big end of a connecting rod can be involved, and great inconvenience is brought to the disassembly and assembly work. For a three-section marine connecting rod, the width of the large end of the connecting rod is larger than the inner diameter of a cylinder sleeve, when a connecting rod-piston assembly needs to be lifted out and a connecting rod large end bearing bush needs to be overhauled and replaced, the large end of the connecting rod cannot be detached from a cylinder sleeve hole, only a rod body can be separated from the large end of the connecting rod, if the large end of the connecting rod is not fixed in the circumferential direction, the large end of the connecting rod can rotate, the cylinder sleeve or other parts are damaged, and life threat can be caused to operators who carry out dismounting. The connecting rod of large-scale medium speed diesel engine is in the dismouting maintenance, and the dismouting space is little, and the operation is inconvenient, and the instrument that uses among the prior art can not satisfy the dismouting requirement to there is the potential safety hazard.
Disclosure of Invention
The invention aims to provide a fixing tool for a large end of a connecting rod, which is simple in structure, meets the requirement of disassembly and assembly space, is convenient for an operator to disassemble and assemble, and simultaneously improves the operation safety in the disassembly and assembly process.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a fixing tool of connecting rod main aspects, the connecting rod main aspects includes upper cover, lower cover, the last double-screw bolt of being connected with the upper cover and the lower double-screw bolt of being connected with the lower cover, and the connecting rod main aspects is installed on the bent axle, installs the balancing piece on the bent axle, and fixing tool includes the fixed unit that two sets of symmetries set up, and fixed unit includes:
the fixed plate comprises a first mounting plate and a second mounting plate fixedly connected with the first mounting plate, the first mounting plate can be connected with the upper stud or the lower stud, and the second mounting plate can be connected with the balance block.
Optionally, the first mounting plate includes a first mounting hole and a second mounting hole, and the fixing unit further includes a first fastener and a second fastener, the first fastener being used to connect the first mounting hole and the upper stud, and the second fastener being used to connect the second mounting hole and the lower stud.
Optionally, a first limiting pipe and a second limiting pipe are arranged on the first mounting plate, the upper stud can extend into the first limiting pipe, and the lower stud can extend into the second limiting pipe.
Optionally, the first and second spacing tubes are welded to the first mounting plate.
Optionally, the second mounting plate is provided with a fixing hole, and the fixing unit further includes a fixing component for connecting the fixing hole and the balance block.
Optionally, the fixing hole locations include a third mounting hole and a fourth mounting hole, the fixing assembly includes a third fastener and a fourth fastener, when the first mounting hole is connected with the upper stud, the third fastener is used for connecting the third mounting hole and the balance weight, and when the second mounting hole is connected with the lower stud, the fourth fastener is used for connecting the fourth mounting hole and the balance weight.
Optionally, the third fastener and the fourth fastener are both bolts.
Optionally, the first mounting plate is integrally formed with the second mounting plate; and/or the two fixing plates are of an integral structure.
Optionally, the fixing plate is made of a sheet metal material by bending.
Another object of the present invention is to provide a method for fixing a connecting rod large end by using a fixing tool, which can improve the operational convenience and operational safety of fixing the connecting rod large end.
In order to achieve the purpose, the invention adopts the following technical scheme:
a fixing method of a fixing tool applying a connecting rod big end comprises the following steps:
the connecting rod and the piston assembly are disassembled, the large end of the connecting rod is left on the crankshaft, and the large end of the connecting rod comprises an upper cover, a lower cover, an upper stud connected with the upper cover and a lower stud connected with the lower cover;
connecting a first mounting plate of the fixing tool with an upper stud or a lower stud;
connecting a second mounting plate of the fixing tool with a balance block on the crankshaft;
the jigger plates the large end of the connecting rod to a proper position.
The invention has the beneficial effects that:
according to the fixing tool for the large end of the connecting rod, the first mounting plate is connected with the upper stud or the lower stud, the second mounting plate is connected with the balance block, and the fixed connection between the upper stud or the lower stud and the balance block is realized through the fixing plate, so that the circumferential fixed connection between the large end of the connecting rod and a crankshaft is realized, the large end of the connecting rod is prevented from rotating, the large end of the connecting rod is convenient to disassemble and assemble by operators, and meanwhile, the operation safety in the disassembling and assembling process is improved; specifically, when the first mounting plate is connected with the upper stud, the first mounting plate can be sequentially disassembled and assembled step by step from the lower stud; when the first mounting plate is connected with the lower stud, sequential step-by-step disassembly and assembly can be carried out from the upper stud, and selection can be carried out according to actual disassembly and assembly conditions, so that the operation is convenient; the fixing tool is simple in structure, the structural characteristics of the large end of the connecting rod, the crankshaft and the balance block are fully utilized, the requirement on assembling and disassembling space is met, and the convenience for operators to install the fixing tool is improved; two groups of symmetrical fixing units are arranged, and the requirement on the installation size of the upper stud or the lower stud can be met.
According to the fixing method of the fixing tool applying the big end of the connecting rod, the operation convenience and the operation safety of fixing the big end of the connecting rod are improved by applying the fixing tool applying the big end of the connecting rod.
Drawings
FIG. 1 is a schematic view of a connecting rod big end and crankshaft mounting structure provided by an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a fastening tool provided in accordance with an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a fixing tool for fixing a lower stud of a big end of a connecting rod according to an embodiment of the invention;
fig. 4 is a schematic structural diagram of a fixing tool for fixing an upper stud at a big end of a connecting rod according to an embodiment of the present invention.
In the figure:
101-a lower cover; 102-an upper cover; 103-lower stud; 104-an upper stud;
200-a crankshaft; 300-balance weight;
11-a first mounting plate; 111-a first limit tube; 112-a second limit tube; 12-a second mounting plate;
2-a first fastener; 3-a second fastener; 4-a third fastener; 5-fourth fastener.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1, the large end of the connecting rod includes a lower cover 101, an upper cover 102, a lower stud 103 connected to the lower cover 101, and an upper stud 104 connected to the upper cover 102, and the large end of the connecting rod is mounted on a crankshaft 200, and a balance weight 300 is mounted on the crankshaft 200. In order to facilitate the disassembly and assembly of the big end of the connecting rod, as shown in fig. 2, the embodiment provides a fixing tool for the big end of the connecting rod, the fixing tool comprises two groups of symmetrically arranged fixing units, and the fixing units comprise fixing plates; specifically, the fixing plate includes a first mounting plate 11 and a second mounting plate 12 fixedly connected to the first mounting plate 11, the first mounting plate 11 can be connected to the lower stud 103 or the upper stud 104, and the second mounting plate 12 can be connected to the weight 300.
The first mounting plate 11 is connected with the lower stud 103 or the upper stud 104, the second mounting plate 12 is connected with the balance weight 300, and the fixed connection between the lower stud 103 or the upper stud 104 and the balance weight 300 is realized through the fixing plate, so that the circumferential fixed connection between the large end of the connecting rod and the crankshaft 200 is realized, the large end of the connecting rod is prevented from rotating, the disassembly and assembly of operators are facilitated, and the operation safety in the disassembly and assembly process is improved; specifically, when the first mounting plate 11 is connected with the lower stud 103, sequential step-by-step disassembly and assembly can be performed from the upper stud 104; when the first mounting plate 11 is connected with the upper stud 104, the lower stud 103 can be sequentially disassembled step by step, and the disassembly can be selected according to the actual disassembly condition, so that the operation is convenient; the fixing tool is simple in structure, the structural characteristics of the large end of the connecting rod, the crankshaft 200 and the balance weight 300 are fully utilized, the requirement on assembling and disassembling space is met, and the convenience for operators to install the fixing tool is improved; two groups of symmetrical fixing units are arranged according to the distance between the lower studs 103 or the upper studs 104 so as to meet the requirement on the installation size of the lower studs 103 or the upper studs 104, and particularly, the size and the installation position of the fixing units can be changed according to different types of diesel engines in actual production and application.
Since the structural dimensions of the lower studs 103 and the upper studs 104 may differ, or the spacing between the lower studs 103 and between the upper studs 104 may differ, in this embodiment, the first mounting plate 11 includes a first mounting hole and a second mounting hole, the fixing unit further includes a first fastening member 2 and a second fastening member 3, the first fastening member 2 is used for connecting the first mounting hole and the lower stud 103, the second fastening member 3 is used for connecting the second mounting hole and the upper stud 104, the fixed connection of the fixed unit and the big end of the connecting rod is realized by the first fastening piece 2 and the second fastening piece 3 respectively, according to the structures of the lower stud 103 and the upper stud 104, a first mounting hole, a second mounting hole, a first fastener 2 and a second fastener 3 are correspondingly arranged respectively, the self structures and the sizes of the lower stud 103 and the upper stud 104 are fully utilized, so that different structural requirements are met, and the structure is simple; the fastener is connected, convenient operation. Specifically, when threaded holes are formed in the lower stud 103 and the upper stud 104, the first fastener 2 and the second fastener 3 are both bolts, so that the bolt is convenient to disassemble and assemble. In other embodiments, the first mounting plate 11 may further include a long hole to take into account the structural size and the distance between the lower stud 103 and the upper stud 104, so that the adaptability is good.
Optionally, a first limiting pipe 111 and a second limiting pipe 112 are arranged on the first mounting plate 11, the lower stud 103 can extend into the first limiting pipe 111, the upper stud 104 can extend into the second limiting pipe 112, and the first limiting pipe 111 and the second limiting pipe 112 can be respectively sleeved on the lower stud 103 and the upper stud 104, so that the circumferential limiting effect of the upper stud 104 and the lower stud 103 is enhanced, and the fixing effect is improved.
Optionally, the first limiting pipe 111 and the second limiting pipe 112 are welded on the first mounting plate 11, the welding structure is stable, the first limiting pipe 111 and the second limiting pipe 112 are integrated with the first mounting plate 11, and the first limiting pipe 111 and the second limiting pipe 112 are more reliable in limiting the upper stud 104 and the lower stud 103.
In this embodiment, the second mounting plate 12 is provided with a fixing hole, the fixing unit further includes a fixing component for connecting the fixing hole and the balance weight 300, the fixing unit and the balance weight 300 are fixedly connected through the fixing hole and the fixing component, the structure on the balance weight 300 is fully utilized, and the structure is simple; the fastener is connected, convenient operation.
Because the lengths of the lower stud 103 and the upper stud 104 are different, in this embodiment, the fixing hole locations include a third mounting hole and a fourth mounting hole, the fixing assembly includes a third fastener 4 and a fourth fastener 5, when the first mounting hole is connected with the lower stud 103, the third fastener 4 is used for connecting the third mounting hole with the balance weight 300, and when the second mounting hole is connected with the upper stud 104, the fourth fastener 5 is used for connecting the fourth mounting hole with the balance weight 300, so as to meet different mounting requirements for connecting the lower stud 103 or the upper stud 104. In other embodiments, the fixing hole may be a long hole, and the third fastening member 4 or the fourth fastening member 5 connects the long hole and the weight 300, which can also meet the connection requirement. Optionally, the third fastener 4 and the fourth fastener 5 are both bolts, so that the disassembly and assembly connection are facilitated.
In order to improve the structural strength of the fixing tool and improve the stability of the installation and fixation of the big end of the connecting rod, optionally, the first mounting plate 11 and the second mounting plate 12 are integrally formed, so that the structural strength between the first mounting plate 11 and the second mounting plate 12 is improved, and further, the structural strength of the fixing plate is improved. Optionally, the two fixing plates are of an integrated structure, so that the structural strength between the two fixing plates is improved, and further, the structural strength of the fixing tool is improved.
Optionally, the fixing plate is made of a sheet metal material through bending, the strength of the sheet metal part is high, and the fixing strength of the large end of the connecting rod and the balance block 300 can be met; the sheet metal part has the advantages of light and thin structure and light weight so as to meet the requirement of narrow dismounting space of the big end of the connecting rod; in addition, the sheet metal part has simple processing technology, can reduce the production cost and save the production cost.
The embodiment also provides a fixing method of a fixing tool applying the connecting rod big end, which comprises the following steps:
s1, detaching the connecting rod and the piston assembly, leaving the big end of the connecting rod on the crankshaft 200, wherein the big end of the connecting rod comprises a lower cover 101, an upper cover 102, a lower stud 103 connected with the lower cover 101 and an upper stud 104 connected with the upper cover 102;
s2, connecting the first mounting plate 11 of the fixing tool with the lower stud 103 or the upper stud 104;
s3, connecting the second mounting plate 12 of the fixing tool with the balance weight 300 on the crankshaft 200;
and S4, coiling the big end of the connecting rod to a proper position by using a jigger.
Before using the fixing tool of the big end of the connecting rod, firstly using other tools for dismounting the connecting rod to dismount the connecting rod and the piston assembly, leaving the lower cover 101, the upper cover 102, the lower stud 103 and the upper stud 104 of the big end of the connecting rod on the big end of the connecting rod, fixing the big end of the connecting rod through the fixing tool, and then coiling the big end of the connecting rod to a proper position through a jigger so as to facilitate subsequent distribution dismounting operation and improve the operation convenience and the operation safety of fixing the big end of the connecting rod; the mounting mode of the fixing tool at the big end of the connecting rod is divided into two modes, which can be selected according to actual conditions, so that the operation convenience is further improved.
Specifically, as shown in fig. 3, when the first mounting plate 11 is connected to the lower stud 103, the lower stud 103 is mounted in the first limiting pipe 111, and the first fastener 2 is tightened to fixedly connect the lower stud 103 to the fixing tool; the third mounting hole corresponds to the mounting hole of the weight 300, and the third fastener 4 is tightened to connect the weight 300 to the fixing tool.
Specifically, as shown in fig. 4, when the first mounting plate 11 is connected to the upper stud 104, the upper stud 104 is mounted in the second limiting pipe 112, and the second fastener 3 is tightened to fixedly connect the upper stud 104 to the fixing tool; the fourth mounting hole corresponds to the mounting hole of the weight 300, and the fourth fastener 5 is tightened to connect the weight 300 to the fixing tool.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (7)
1. The utility model provides a fixing tool of connecting rod main aspects, the connecting rod main aspects include lower cover (101), upper cover (102), with lower double-screw bolt (103) that lower cover (101) are connected and with last double-screw bolt (104) that upper cover (102) are connected, the connecting rod main aspects is installed on bent axle (200), install balancing piece (300) on bent axle (200), its characterized in that, fixing tool includes the fixed unit that two sets of symmetries set up, fixed unit includes:
the fixing plate comprises a first mounting plate (11) and a second mounting plate (12) fixedly connected with the first mounting plate (11), the first mounting plate (11) can be connected with the lower stud (103) or the upper stud (104), and the second mounting plate (12) can be connected with the balance block (300);
the first mounting plate (11) comprises a first mounting hole and a second mounting hole, the fixing unit further comprises a first fastener (2) and a second fastener (3), the first fastener (2) is used for connecting the first mounting hole and the lower stud (103), and the second fastener (3) is used for connecting the second mounting hole and the upper stud (104);
a fixing hole is formed in the second mounting plate (12), and the fixing unit further comprises a fixing component which is used for connecting the fixing hole and the balance block (300);
the fixing hole position comprises a third mounting hole and a fourth mounting hole, the fixing assembly comprises a third fastener (4) and a fourth fastener (5), when the first mounting hole is connected with the lower stud (103), the third fastener (4) is used for connecting the third mounting hole with the balance block (300), when the second mounting hole is connected with the upper stud (104), the fourth fastener (5) is used for connecting the fourth mounting hole with the balance block (300).
2. The tool for fixing the big end of the connecting rod is characterized in that a first limiting pipe (111) and a second limiting pipe (112) are arranged on the first mounting plate (11), the lower stud (103) can extend into the first limiting pipe (111), and the upper stud (104) can extend into the second limiting pipe (112).
3. The tool for fixing the big end of a connecting rod as recited in claim 2, wherein the first limit pipe (111) and the second limit pipe (112) are welded to the first mounting plate (11).
4. Connecting rod big end fixation tool according to claim 1, characterized in that the third fastener (4) and the fourth fastener (5) are both bolts.
5. Connecting rod big end fixing tool according to any of claims 1-4, characterized in that the first mounting plate (11) is formed integrally with the second mounting plate (12); and/or the two fixing plates are of an integral structure.
6. The tool for fixing the big end of the connecting rod as recited in any one of claims 1 to 4, wherein the fixing plate is made of a sheet metal material by bending.
7. A fixing method using the connecting rod big end fixing tool according to any one of claims 1 to 6, characterized by comprising the steps of:
detaching a connecting rod and a piston assembly, wherein the large end of the connecting rod is left on a crankshaft (200), and the large end of the connecting rod comprises a lower cover (101), an upper cover (102), a lower stud (103) connected with the lower cover (101) and an upper stud (104) connected with the upper cover (102);
connecting a first mounting hole on a first mounting plate (11) of a fixing tool with the lower stud (103) through a first fastener (2), or connecting a second mounting hole on the first mounting plate (11) of the fixing tool with the upper stud (104) through a second fastener (3);
when the first mounting hole on the first mounting plate (11) of the fixing tool is connected with the lower stud (103) through the first fastener (2), the third mounting hole on the second mounting plate (12) of the fixing tool is connected with the balance weight (300) on the crankshaft (200) through the third fastener (4); when the first mounting hole on the first mounting plate (11) of the fixing tool is connected with the lower stud (103) through the first fastener (2), the fourth mounting hole on the second mounting plate (12) of the fixing tool is connected with the balance weight (300) on the crankshaft (200) through the fourth fastener (5);
and the jigger plates the large end of the connecting rod to a proper position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010670609.5A CN111843891B (en) | 2020-07-13 | 2020-07-13 | Fixing tool for connecting rod big end and fixing method applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010670609.5A CN111843891B (en) | 2020-07-13 | 2020-07-13 | Fixing tool for connecting rod big end and fixing method applying same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111843891A CN111843891A (en) | 2020-10-30 |
| CN111843891B true CN111843891B (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010670609.5A Active CN111843891B (en) | 2020-07-13 | 2020-07-13 | Fixing tool for connecting rod big end and fixing method applying same |
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| Country | Link |
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| CN (1) | CN111843891B (en) |
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| US3793718A (en) * | 1971-11-08 | 1974-02-26 | Mitsui Shipbuilding Eng | Apparatus for removing or inserting a piston in reciprocating engines |
| US5644827A (en) * | 1993-11-19 | 1997-07-08 | Alcobia; Ed | Apparatus for installing and removing piston rods |
| JP2000225579A (en) * | 1999-02-05 | 2000-08-15 | Honda Motor Co Ltd | Piston inserting device |
| CN2925770Y (en) * | 2006-07-27 | 2007-07-25 | 宝山钢铁股份有限公司 | Special tool for fastly diattaching connecting-rod axle bush |
| CN201338254Y (en) * | 2008-12-04 | 2009-11-04 | 广州柴油机厂 | Motorship-used connecting rod big-end top brass dismantling device |
| CN109500771A (en) * | 2018-12-20 | 2019-03-22 | 上海中船三井造船柴油机有限公司 | Setting tool and method for diesel engine crank pin bearing lid and connecting rod dismounting |
| CN109605283A (en) * | 2019-01-09 | 2019-04-12 | 陕西柴油机重工有限公司 | Prevent diesel engine assembly and disassembly piston rod part from pulling the protective device and method of cylinder sleeve |
| CN109973235A (en) * | 2017-12-28 | 2019-07-05 | 中国船舶重工集团公司第七一一研究所 | A kind of fixation kit |
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2020
- 2020-07-13 CN CN202010670609.5A patent/CN111843891B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3793718A (en) * | 1971-11-08 | 1974-02-26 | Mitsui Shipbuilding Eng | Apparatus for removing or inserting a piston in reciprocating engines |
| US5644827A (en) * | 1993-11-19 | 1997-07-08 | Alcobia; Ed | Apparatus for installing and removing piston rods |
| JP2000225579A (en) * | 1999-02-05 | 2000-08-15 | Honda Motor Co Ltd | Piston inserting device |
| CN2925770Y (en) * | 2006-07-27 | 2007-07-25 | 宝山钢铁股份有限公司 | Special tool for fastly diattaching connecting-rod axle bush |
| CN201338254Y (en) * | 2008-12-04 | 2009-11-04 | 广州柴油机厂 | Motorship-used connecting rod big-end top brass dismantling device |
| CN109973235A (en) * | 2017-12-28 | 2019-07-05 | 中国船舶重工集团公司第七一一研究所 | A kind of fixation kit |
| CN109500771A (en) * | 2018-12-20 | 2019-03-22 | 上海中船三井造船柴油机有限公司 | Setting tool and method for diesel engine crank pin bearing lid and connecting rod dismounting |
| CN109605283A (en) * | 2019-01-09 | 2019-04-12 | 陕西柴油机重工有限公司 | Prevent diesel engine assembly and disassembly piston rod part from pulling the protective device and method of cylinder sleeve |
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|---|---|
| CN111843891A (en) | 2020-10-30 |
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