CN112123267B - Marine diesel engine connecting rod disassembly tool - Google Patents
Marine diesel engine connecting rod disassembly tool Download PDFInfo
- Publication number
- CN112123267B CN112123267B CN202011143994.4A CN202011143994A CN112123267B CN 112123267 B CN112123267 B CN 112123267B CN 202011143994 A CN202011143994 A CN 202011143994A CN 112123267 B CN112123267 B CN 112123267B
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- arc
- connecting rod
- crank pin
- shaped
- fixing component
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- 230000002093 peripheral effect Effects 0.000 claims description 5
- 102000004315 Forkhead Transcription Factors Human genes 0.000 claims description 4
- 108090000852 Forkhead Transcription Factors Proteins 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 241001584775 Tunga penetrans Species 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention discloses a marine diesel engine connecting rod disassembly tool which comprises a first fixing group, a second fixing component, a crank pin fixing component and two arc-shaped adjusting plates, wherein the first fixing group and the second fixing component are respectively fixed in the left side and the right side of a connecting rod body at the lower end of a connecting rod, the crank pin fixing component is positioned at the outer side of a crank pin, the arc-shaped crank pin fixing component is contained on the outer circle of a lower bearing bush of the crank pin, one end of each arc-shaped adjusting plate is respectively fixedly connected with the lower end of the corresponding first fixing component or the lower end of the corresponding second fixing component, and the other end of each arc-shaped adjusting plate is respectively fixedly connected with the two ends of the corresponding crank pin fixing component. The invention can replace the bearing cover to be connected with the connecting rod, and can drive the connecting rod to safely translate to a proper angle suitable for lifting. Compact structure, convenient to use have improved the operating efficiency and the operation security of connecting rod dismouting greatly, have improved the reliability of connecting rod dismantlement operation, avoid taking place the serious equipment accident that the connecting rod falls. The invention is applicable to the disassembly and assembly of connecting rods of different types, and improves the universality.
Description
Technical Field
The invention relates to a connecting rod disassembling tool, in particular to a tool for disassembling a connecting rod of a diesel engine, and belongs to the technical field of tools special for diesel engine maintenance.
Background
The connecting rod body and the crank pin bearing cover at the lower end of the connecting rod of the large-scale (power is more than or equal to 5000 kW) two-stroke low-speed (less than or equal to 300 rpm) marine diesel engine comprise an upper bearing bush and a lower bearing bush outside a crank pin of a diesel engine crankshaft. Because the overall size of the connecting rod is too long, it is very inconvenient for a serviceman to dismantle the connection of the connecting rod body and the crankpin in a narrow space of the diesel engine frame. In particular, the crank pin bearing cover and the connecting rod body are required to be detached respectively under different crank angles, the crank pin bearing cover can be detached after the crank shaft of the diesel engine rotates to a proper angle, after the crank pin bearing cover is detached, the connecting rod body and the crank pin are in a non-connection state, and the connecting rod cannot rotate to a proper angle which is convenient to detach and remove along with the crank pin. At present, the connecting rod rotation after the crank pin bearing cover is removed can be completed by adopting the cooperation of a plurality of hoisting hoists, the operation is very complicated, a plurality of operators are required to cooperate, the operation efficiency is very low, and serious potential safety hazards exist. The connecting rod is easy to separate from the crank pin to fall in the rotation process, so that the crank pin is very likely to be damaged, the safety of operators in the machine frame is seriously threatened, and serious equipment accidents and safety accidents are caused.
Disclosure of Invention
The invention aims to provide a diesel engine connecting rod disassembling tool which is compact in structure, safe to use and has certain universality.
The invention is realized by the following technical scheme:
The utility model provides a frock is dismantled to marine diesel engine connecting rod, includes the fixed subassembly of crank pin that fixes respectively in the left and right sides of connecting rod lower extreme connecting rod body, second fixed subassembly and be located the crank pin outside, and two arc regulating plates, and the crank pin fixed subassembly that is convex holds on the lower axle bush excircle of crank pin, arc regulating plate one end respectively with the fixed subassembly lower extreme of corresponding first fixed subassembly lower extreme or second fixed subassembly lower extreme fixed connection, the both ends fixed connection of the fixed subassembly of arc regulating plate other end and crank pin.
The object of the invention can be further achieved by the following technical measures:
Further, the first fixing component comprises a fixing nut, a hanging lug ring, a first upper connecting rod and a lower connecting rod, the second fixing component comprises a second upper connecting rod and a lower connecting rod, the lower ends of the first upper connecting rod and the second upper connecting rod respectively extend into connecting holes on two sides of the width direction of the connecting rod body, and are fixedly connected with the upper ends of the corresponding lower connecting rods through double-end connecting studs; the suspension ear ring is sleeved at the upper end of the first upper connecting rod and limited by a fixing nut screwed at the end head of the upper end of the first upper connecting rod; the lower ends of the lower connecting rods are fixedly connected with the upper ends of the corresponding arc-shaped adjusting plates respectively.
Further, the upper ends of the first upper connecting rod and the second upper connecting rod are respectively provided with a radial flange, the upper end of the lower connecting rod is provided with a fork head fixedly connected with the upper end of the arc-shaped adjusting plate, and the radial flange and the fork head respectively clamp the two sides of the connecting rod in the height direction; the arc adjusting plate is internally provided with arc adjusting grooves, the upper ends of the arc adjusting plates are respectively inserted into the fork heads of the corresponding lower connecting rods, and the lower ends of the lower connecting rods are fixedly connected with the upper ends of the arc adjusting plates through connecting bolt and nut groups which cross the fork heads and the arc adjusting grooves.
Further, the crank pin fixing assembly comprises an arc-shaped connecting plate and a plurality of fixing blocks, fork openings are respectively arranged at the centers of the thickness directions of the two ends of the arc-shaped connecting plate, circumferential arc-shaped grooves are respectively arranged on the planes of the two ends of the arc-shaped connecting plate, a plurality of radial protrusions are uniformly distributed in the middle of the arc-shaped connecting plate, two parallel radial grooves are uniformly distributed on each radial protrusion, and one end of each fixing block is fixed on each radial protrusion; the lower ends of the arc-shaped adjusting plates are respectively inserted into the fork openings corresponding to the ends of the arc-shaped connecting plates, and the lower ends of the arc-shaped adjusting plates are respectively fixedly connected with the corresponding ends of the arc-shaped connecting plates through connecting bolt and nut groups which transversely penetrate through the circumferential arc-shaped grooves and the arc-shaped adjusting grooves.
Further, the other end of the fixed block is provided with a fixed block fork opening, the fixed block fork opening is inserted on the corresponding radial bulge, and the fixed block is fixed on the middle part of the arc-shaped connecting plate through two fixed block connecting bolt and nut groups which respectively penetrate through the fixed block and the radial groove of the radial bulge; one end face of the fixed block is abutted against the outer peripheral face of the lower bearing bush at the outer side of the crank pin through a rubber pad.
Further, the lifting lug ring is movably connected with the upper end of the first upper connecting rod, and the outer circumferential surface of the lifting lug ring extends outwards to form a lifting plate with lifting holes.
The invention adopts a structure that a first fixing component and a second fixing component which are respectively fixed at the left side and the right side of the connecting rod body are fixedly connected with the two ends of the crank pin fixing component sequentially through the arc-shaped adjusting plates, so that a joint body formed by fixedly connecting the two ends of the crank pin fixing component with the corresponding arc-shaped adjusting plates is contained at the outer side of a semicircle of a lower bearing bush of the crank pin, thereby the invention can replace a bearing cover to be connected with the connecting rod. When the crank pin rotates around the centers of two ends of the crankshaft, the connecting rod can be driven to safely translate to a proper angle suitable for lifting by the invention. The structure is compact, the use is convenient, only 1-2 operators are needed in the frame, the operation efficiency and the operation safety of the disassembly and assembly of the connecting rod are greatly improved, the reliability of the disassembly operation of the connecting rod is improved, and serious equipment accidents caused by the falling of the connecting rod are avoided. The radial position of the fixing block on the crank pin fixing assembly is adjusted, so that the crank pin fixing assembly is applicable to disassembly and assembly of connecting rods of different types, and the universality of the crank pin fixing assembly is improved.
Advantages and features of the invention will be illustrated and explained by the following non-limiting description of preferred embodiments, given by way of example only with reference to the accompanying drawings.
Drawings
FIG. 1 is a block diagram of the present invention mounted on a crankpin of a diesel engine crankshaft;
fig. 2 is a perspective view of the present invention.
Detailed Description
The invention is further described below with reference to the drawings and examples.
As shown in fig. 1 and 2, the present embodiment includes a first fixing component 1 and a second fixing component 2 respectively fixed in left and right sides of a link body 101 at a lower end of a link 10, a crank pin fixing component 3 located at an outer side of a crank pin 201, and two arc-shaped adjusting plates 4, wherein the crank pin fixing component 3 in a circular arc shape is contained on an outer circle of a lower bearing bush 202 of the crank pin 201, one end of each arc-shaped adjusting plate 4 is fixedly connected with a lower end of the corresponding first fixing component 1 or a lower end 2 of the corresponding second fixing component, and the other end of each arc-shaped adjusting plate 4 is fixedly connected with two ends of the corresponding crank pin fixing component 3.
The first fixing assembly 1 comprises a fixing nut 11, a lifting lug ring 12, a first upper connecting rod 13 and a lower connecting rod 14, the second fixing assembly 2 comprises a second upper connecting rod 21 and a lower connecting rod 14, the lower ends of the first upper connecting rod 13 and the second upper connecting rod 21 respectively extend into connecting holes 102 on two sides of the connecting rod body 101 in the width direction, and are fixedly connected with the upper ends of the corresponding lower connecting rods 14 respectively through double-end connecting studs 15. The upper ends of the first upper connecting rod 13 and the second upper connecting rod 21 are respectively provided with a radial flange 131, and the lifting lug ring 12 is sleeved at the upper end of the radial flange 131 of the first upper connecting rod 13 and is limited by a fixing nut 11 screwed at the end head of the upper end of the first upper connecting rod 13. The lifting lug ring 12 is movably connected with the upper end of the first upper connecting rod 13, and a lifting plate 121 with a lifting hole 122 is outwards extended from the peripheral surface of the lifting lug ring 12, so that the lifting link 10 for lifting the lifting shackle is convenient to install.
The upper end of the lower connecting rod 14 is provided with a fork-shaped head 141 fixedly connected with the upper end of the arc-shaped adjusting plate 4, the radial flange 131 and the fork-shaped head 141 respectively clamp the upper side and the lower side of the width direction of the connecting rod body 101, so that the first fixing component 1 and the second fixing component 2 are respectively fixed on the left side and the right side of the width direction of the connecting rod body 101, the first fixing component 1 and the second fixing component 2 are conveniently and fixedly connected with the two ends of the arc-shaped adjusting plate 4 and the two ends of the crank pin fixing component 3 respectively and then clamp the crank pin 201, and the connecting rod 10 can be driven to translate to a lifting inclined angle position when the crank pin 201 rotates around the center of a crankshaft.
The arc adjusting plate 4 is provided with arc adjusting grooves 41 for adjusting the crank pins 201 with different clamping radiuses so as to meet the disassembly and assembly of connecting rods with different types. The upper ends of the arc-shaped adjusting plates 4 are respectively inserted into the fork heads 141 of the corresponding lower connecting rods 14, and the lower ends of the lower connecting rods 14 are fixedly connected with the upper ends of the arc-shaped adjusting plates 4 through the connecting bolt and nut groups 42 which cross the fork heads 141 and the arc-shaped adjusting grooves 41.
The crank pin fixing assembly 3 comprises an arc-shaped connecting plate 31 and 3 fixing blocks 32, fork openings 311 are respectively arranged at the centers of the thickness directions of the two ends of the arc-shaped connecting plate 31, circumferential arc-shaped grooves 312 are respectively arranged on the planes of the two ends of the arc-shaped connecting plate 31, 3 radial protrusions 313 are uniformly distributed in the middle of the arc-shaped connecting plate 31, and two radial grooves 314 which are arranged in parallel are uniformly distributed on each radial protrusion 313. The lower ends of the arc-shaped adjusting plates 4 are respectively inserted into the fork openings 311 corresponding to the ends of the arc-shaped connecting plates 31, and the lower ends of the arc-shaped adjusting plates 4 are respectively fixedly connected with the corresponding ends of the arc-shaped connecting plates 31 through the connecting bolt and nut groups 42 which transversely penetrate through the circumferential arc-shaped grooves 312 and the arc-shaped adjusting grooves 41.
One end face of the fixed block 32 is abutted against the outer peripheral face of the lower bearing bush 202 on the outer side of the crank pin 201 through the rubber pad 5, the other end of the fixed block 32 is provided with a fixed block fork 321, the fixed block fork 321 is inserted into a corresponding radial protrusion 313, and the fixed block 32 is fixed on the middle part of the arc-shaped connecting plate 31 through two groups of fixed block connecting bolt and nut groups 315 which respectively penetrate through the fixed block 32 and the radial groove 314 of the radial protrusion 313.
The circumferential arc grooves 312 at the two ends of the arc connecting plate 31 and the radial grooves 314 of the 3 radial protrusions 313 in the middle of the arc connecting plate 31 also play a role in clamping crank pins 201 with different radiuses, meet the requirements of clamping connecting rods with different types, and enlarge the application range of the invention.
The process of driving the connecting rod 10 to translate by using the invention is as follows:
this process is performed after the crank pin bearing cap, which has connected the connecting rod 10 with the crank pin 201, has been removed.
The upper ends of the double-end connecting studs 15 are screwed into threaded holes at the lower ends of the first upper connecting rod 13 and the second upper connecting rod 21 respectively, and are screwed down respectively. Then, the hanging ear ring 12 is sleeved on the upper side of the radial flange 131 of the first upper connecting rod 13, and is limited by the fixing nut 11 screwed on the upper end head of the first upper connecting rod 13.
The first upper connecting rod 13 and the stud 15 assembly and the second upper connecting rod 21 and the stud 15 assembly which are connected are respectively inserted into the connecting holes 102 on the left side and the right side of the connecting rod body 101 in fig. 1, then the lower connecting rods 14 are respectively inserted into the connecting holes 102 from opposite directions, and the fork heads 141 of the lower connecting rods 14 are respectively pulled, so that the lower ends of the stud 15 are respectively screwed into the threaded holes of the corresponding lower connecting rods 14 until the radial flange 131 of the first upper connecting rod 13 and the radial flange 131 of the second upper connecting rod 21 and the fork heads 141 of the lower connecting rods 14 respectively clamp the two sides of the connecting rod body 101 in the height direction, thereby respectively fixing the first fixing assembly 1 and the second fixing assembly 2 in the connecting rod body 101.
Then the upper ends of the arc-shaped adjusting plates 4 are respectively inserted into the fork heads 141 of the corresponding lower connecting rods 14, and the lower ends of the lower connecting rods 14 are fixedly connected with the upper ends of the arc-shaped adjusting plates 4 through the connecting bolt and nut groups 42 which cross the fork heads 141 and the arc-shaped adjusting grooves 41, so that the connecting bolt and nut groups 42 do not need to be screwed down for adjustment.
The fixed block fork 321 is inserted into the corresponding radial protrusion 313, and the fixed block 32 is primarily fixed on the middle part of the arc-shaped connecting plate 31 through two fixed block connecting bolt and nut groups 315 respectively penetrating through the fixed block 32 and the radial groove 314 of the radial protrusion 313. And then the lower ends of the arc-shaped adjusting plates 4 are respectively inserted into the fork openings 311 corresponding to the ends of the arc-shaped connecting plates 31, the lower ends of the arc-shaped adjusting plates 4 are respectively fixedly connected with the corresponding ends of the arc-shaped connecting plates 31 through the connecting bolt and nut groups 42 which transversely penetrate through the circumferential arc-shaped grooves 312 and the arc-shaped adjusting grooves 41, and the connecting bolt and nut groups 42 do not need to be screwed down. In this process, according to the diameter of the crank pin 201, the expansion and contraction amount of the fixed block fork 321 and the overlapping length of the arc adjusting groove 41 of the arc adjusting plate 4 and the corresponding circumferential arc groove 312 of the end of the arc connecting plate 31 ensure that the rubber pad 5 on the end surface of the fixed block 32 is abutted against the outer circumferential surface of the lower bearing bush 202 on the outer side of the crank pin 201, and finally, each connecting bolt and nut group 42 and each fixed block connecting bolt and nut group 315 are respectively screwed, thus completing the installation of the invention.
The jigger is started, so that the crank pin 201 rotates to a proper angle around the center of the crankshaft, and therefore, after the connecting rod 10 is driven to translate to an inclined angle capable of being lifted in fig. 1 by the invention, the invention is dismantled, and a lifting shackle is installed in the lifting hole 122 of the lifting lug ring 12, so that the connecting rod 101 can be lifted off the crank pin 201 and removed from the frame.
In addition to the above embodiments, other embodiments of the present invention are possible, and all technical solutions formed by equivalent substitution or equivalent transformation are within the scope of the present invention.
Claims (2)
1. Frock is dismantled to marine diesel engine connecting rod, its characterized in that: the device comprises a first fixing component, a second fixing component, a crank pin fixing component and two arc-shaped adjusting plates, wherein the first fixing component and the second fixing component are respectively fixed in the left side and the right side of a connecting rod body at the lower end of the connecting rod, the crank pin fixing component is positioned at the outer side of a crank pin, the crank pin fixing component which is in the shape of an arc is contained on the outer circle of a lower bearing bush of the crank pin, one end of each arc-shaped adjusting plate is respectively fixedly connected with the lower end of the corresponding first fixing component or the lower end of the corresponding second fixing component, and the other end of each arc-shaped adjusting plate is respectively fixedly connected with the two ends of the corresponding crank pin fixing component;
The first fixing assembly comprises a fixing nut, a hanging lug ring, a first upper connecting rod and a lower connecting rod, the second fixing assembly comprises a second upper connecting rod and a lower connecting rod, the lower ends of the first upper connecting rod and the second upper connecting rod respectively extend into connecting holes on two sides of the connecting rod body in the width direction, and are fixedly connected with the upper ends of the corresponding lower connecting rods through double-end connecting studs; the suspension ear ring is sleeved at the upper end of the first upper connecting rod and limited by a fixing nut screwed at the end head of the upper end of the first upper connecting rod; the lower ends of the lower connecting rods are fixedly connected with the upper ends of the corresponding arc-shaped adjusting plates respectively; the lifting lug ring is movably connected with the upper end of the first upper connecting rod, and the peripheral surface of the lifting lug ring extends outwards to form a lifting plate with a lifting hole;
The upper ends of the first upper connecting rod and the second upper connecting rod are respectively provided with a radial flange, the upper end of the lower connecting rod is provided with a fork head fixedly connected with the upper end of the arc-shaped adjusting plate, and the radial flange and the fork head respectively clamp the upper side and the lower side of the height direction of the connecting rod; an arc-shaped adjusting groove is formed in the arc-shaped adjusting plate, the upper end of the arc-shaped adjusting plate is respectively inserted into the fork heads of the corresponding lower connecting rods, and the lower end of the lower connecting rods is fixedly connected with the upper end of the arc-shaped adjusting plate through a connecting bolt and nut group which passes through the fork heads and the arc-shaped adjusting groove;
The crank pin fixing assembly comprises an arc-shaped connecting plate and a plurality of fixing blocks, fork openings are respectively arranged at the centers of the thickness directions of the two ends of the arc-shaped connecting plate, circumferential arc-shaped grooves are respectively arranged on the planes of the two ends of the arc-shaped connecting plate, a plurality of radial protrusions are uniformly distributed in the middle of the arc-shaped connecting plate, two radial grooves which are arranged in parallel are uniformly distributed in each radial protrusion, and one end of each fixing block is fixed on each radial protrusion; the lower ends of the arc-shaped adjusting plates are respectively inserted into the fork openings corresponding to the ends of the arc-shaped connecting plates, and the lower ends of the arc-shaped adjusting plates are respectively fixedly connected with the corresponding ends of the arc-shaped connecting plates through connecting bolt and nut groups which transversely penetrate through the circumferential arc-shaped grooves and the arc-shaped adjusting grooves.
2. The marine diesel connecting rod disassembly tool of claim 1, wherein: the other end of the fixed block is provided with a fixed block fork opening, the fixed block fork opening is inserted on the corresponding radial bulge, and the fixed block is fixed on the middle part of the arc-shaped connecting plate through two fixed block connecting bolt and nut groups which respectively penetrate through the fixed block and the radial groove of the radial bulge; one end face of the fixed block is abutted against the outer peripheral face of the lower bearing bush at the outer side of the crank pin through a rubber pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011143994.4A CN112123267B (en) | 2020-10-23 | 2020-10-23 | Marine diesel engine connecting rod disassembly tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011143994.4A CN112123267B (en) | 2020-10-23 | 2020-10-23 | Marine diesel engine connecting rod disassembly tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112123267A CN112123267A (en) | 2020-12-25 |
| CN112123267B true CN112123267B (en) | 2024-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011143994.4A Active CN112123267B (en) | 2020-10-23 | 2020-10-23 | Marine diesel engine connecting rod disassembly tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112123267B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2610391A (en) * | 1947-08-19 | 1952-09-16 | Federal Mogul Corp | Tool for assembling and disassembling connecting rods and their bearings |
| US2687568A (en) * | 1951-04-19 | 1954-08-31 | Keiser John | Connecting rod tool |
| CN204369535U (en) * | 2015-01-08 | 2015-06-03 | 广西玉柴机器股份有限公司 | The assembly of the valve protection cap of dismounting steel cylinder |
| CN109048299A (en) * | 2018-10-31 | 2018-12-21 | 中船动力有限公司 | The connecting rod bearing shell mounting tool and method of marine diesel |
| CN110695910A (en) * | 2019-10-30 | 2020-01-17 | 中船动力有限公司 | Tool and method for disassembling and assembling exhaust valve and valve seat of diesel engine |
| CN213673875U (en) * | 2020-10-23 | 2021-07-13 | 中船动力有限公司 | Marine diesel connecting rod dismantles frock |
-
2020
- 2020-10-23 CN CN202011143994.4A patent/CN112123267B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2610391A (en) * | 1947-08-19 | 1952-09-16 | Federal Mogul Corp | Tool for assembling and disassembling connecting rods and their bearings |
| US2687568A (en) * | 1951-04-19 | 1954-08-31 | Keiser John | Connecting rod tool |
| CN204369535U (en) * | 2015-01-08 | 2015-06-03 | 广西玉柴机器股份有限公司 | The assembly of the valve protection cap of dismounting steel cylinder |
| CN109048299A (en) * | 2018-10-31 | 2018-12-21 | 中船动力有限公司 | The connecting rod bearing shell mounting tool and method of marine diesel |
| CN110695910A (en) * | 2019-10-30 | 2020-01-17 | 中船动力有限公司 | Tool and method for disassembling and assembling exhaust valve and valve seat of diesel engine |
| CN213673875U (en) * | 2020-10-23 | 2021-07-13 | 中船动力有限公司 | Marine diesel connecting rod dismantles frock |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112123267A (en) | 2020-12-25 |
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