CN112123267A - Marine diesel connecting rod dismantles frock - Google Patents
Marine diesel connecting rod dismantles frock Download PDFInfo
- Publication number
- CN112123267A CN112123267A CN202011143994.4A CN202011143994A CN112123267A CN 112123267 A CN112123267 A CN 112123267A CN 202011143994 A CN202011143994 A CN 202011143994A CN 112123267 A CN112123267 A CN 112123267A
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- connecting rod
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- crank pin
- shaped adjusting
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- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 description 4
- 102000004315 Forkhead Transcription Factors Human genes 0.000 description 2
- 108090000852 Forkhead Transcription Factors Proteins 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
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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
- 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 dismounting 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 on 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 and fixedly connected with the lower end of the corresponding first fixing component or the lower end of the corresponding second fixing component, and. The invention can replace a bearing cover to be connected with the connecting rod, and can drive the connecting rod to safely translate to a proper angle suitable for hoisting. 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 can be suitable for the disassembly and assembly of connecting rods of different types, and improves the universality.
Description
Technical Field
The invention relates to a connecting rod dismounting tool, in particular to a tool for dismounting a connecting rod of a diesel engine, and belongs to the technical field of special tools for diesel engine maintenance.
Background
The connecting rod body and the crank pin bearing cap at the lower end of the connecting rod of the large-scale (the power is more than or equal to 5000 kW) two-stroke low-speed (less than or equal to 300 rpm) marine diesel engine contain an upper bearing bush and a lower bearing bush outside a crank pin of the diesel engine. Because the overall size of the connecting rod is too long, it is very inconvenient for maintenance personnel to remove the connection between the connecting rod body and the crank pin in a narrow space of the diesel engine rack. Especially, crank pin bearing cap and connecting rod body need be demolishd respectively under the bent axle corner of difference, and the crank pin bearing cap just can be demolishd after the diesel engine bent axle rotates suitable angle, and after crank pin bearing cap demolishd, the connecting rod body is in non-connected state with the crank pin, and the connecting rod can't rotate the suitable angle of convenient dismantlement and shifting out along with the crank pin. At present, the rotation of a connecting rod after a crank pin bearing cover is removed can be completed by matching a plurality of hoisting hoists, the operation is very complicated, a plurality of operators are needed to be matched, the operation efficiency is very low, and serious potential safety hazards exist. The connecting rod breaks away from the crank pin easily and falls at the rotation in-process, probably damages the crank pin and seriously threatens the safety of operating personnel in the frame, causes serious equipment accident and incident.
Disclosure of Invention
The invention aims to provide a diesel engine connecting rod dismounting tool which is compact in structure, safe to use and certain in universality.
The invention is realized by the following technical scheme:
the utility model provides a frock is dismantled to marine diesel engine connecting rod, including fixing the first fixed group in connecting rod lower extreme connecting rod body left and right sides respectively, the subassembly is fixed to the second and the crank pin that is located the crank pin outside fixes the subassembly, and two arc regulating plates, the crank pin that is convex fixes the subassembly and contains on the lower axle bush excircle of crank pin, arc regulating plate one end respectively with the fixed subassembly lower extreme fixed connection of the first fixed subassembly lower extreme or the second that correspond, the arc regulating plate other end respectively with the both ends fixed connection of the fixed subassembly of crank pin.
The object of the invention can be further achieved by the following technical measures:
furthermore, the first fixing assembly comprises a fixing nut, a lifting lug ring, a first upper connecting rod and a lower connecting rod, the second fixing assembly comprises a second upper connecting rod and a second 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 the lower ends of the first upper connecting rod and the second upper connecting rod are fixedly connected with the upper ends of the corresponding lower connecting rods through double-end connecting studs; the lifting lug ring is sleeved at the upper end of the first upper connecting rod and is 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 respectively fixedly connected with the upper ends of the corresponding arc-shaped adjusting plates.
Further, the upper end of the first upper connecting rod and the upper end of 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-shaped head fixedly connected with the upper end of the arc-shaped adjusting plate, and the radial flange and the fork-shaped head respectively clamp two sides of the connecting rod body in the height direction; 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-shaped heads corresponding to the lower connecting rod, and the lower end of the lower connecting rod is fixedly connected with the upper end of the arc-shaped adjusting plate through a connecting bolt nut group which transversely penetrates through the fork-shaped heads and the arc-shaped adjusting groove.
Furthermore, the crank pin fixing assembly comprises an arc-shaped connecting plate and a plurality of fixing blocks, the centers of the two ends of the arc-shaped connecting plate in the thickness direction are respectively provided with a fork opening, the planes of the two ends of the arc-shaped connecting plate are respectively provided with a circumferential arc-shaped groove, the middle part of the arc-shaped connecting plate is uniformly provided with a plurality of radial protrusions, each radial protrusion is uniformly provided with two radial grooves which are arranged in parallel, and one end of each fixing block is fixed on; the lower ends of the arc-shaped adjusting plates are respectively inserted into fork openings of the ends of the corresponding 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, the fixed block fork is inserted on the corresponding radial protrusion, 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 protrusion; the end face of one end of the fixed block is abutted against the outer peripheral face of the lower bearing bush on the outer side of the crank pin through a rubber pad.
Furthermore, the lifting lug ring is movably connected with the upper end of the first upper connecting rod, and a lifting plate with a lifting hole extends outwards from the outer peripheral surface of the lifting lug ring.
The invention adopts a structure that the first fixing component and the second fixing component which are respectively fixed on 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 through the arc-shaped adjusting plates in sequence, so that a united body formed by fixedly connecting the two ends of the crank pin fixing component and the corresponding arc-shaped adjusting plates is contained at the semicircular outer side of the lower bearing bush of the crank pin, and the connecting rod can be connected with the connecting rod instead of a bearing cover. When the crank pin rotates around the centers of two ends of the crank shaft, the connecting rod can be driven to safely translate to a proper angle suitable for hoisting through the crank pin lifting mechanism. 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 connecting rod dismounting are greatly improved, the reliability of the connecting rod dismounting operation is improved, and the serious equipment accident that the connecting rod falls is avoided. The radial position of the fixed block on the crank pin fixing assembly is adjusted, so that the connecting rod assembling and disassembling device is suitable for assembling and disassembling connecting rods of different machine types, and the universality is improved.
Advantages and features of the present invention will be illustrated and explained by the following non-restrictive description of preferred embodiments thereof, 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 crank pin of a diesel engine crankshaft;
fig. 2 is a perspective view of the present invention.
Detailed Description
The invention is further illustrated by the following figures and examples.
As shown in fig. 1 and fig. 2, the present embodiment includes a first fixing component 1 and a second fixing component 2 fixed in the left and right sides of the connecting rod body 101 at the lower end of the connecting rod 10, respectively, and a crank pin fixing component 3 and two arc-shaped adjusting plates 4 located outside the crank pin 201, the crank pin fixing component 3 in the shape of a circular arc is contained on the outer circle of the lower bearing bush 202 of the crank pin 201, one end of each arc-shaped adjusting plate 4 is fixedly connected with the corresponding lower end of the first fixing component 1 or the lower end 2 of the second fixing component, and the other end of each arc-shaped adjusting plate 4 is fixedly connected with the two ends.
The first fixing component 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 component 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 the lower ends of the first upper connecting rod 13 and the second upper connecting rod 21 are fixedly connected with the upper ends of the corresponding lower connecting rods 14 through double-end connecting studs 15. The upper end of the first upper connecting rod 13 and the upper end of 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 extends outwards from the outer peripheral surface of the lifting lug ring 12, so that the lifting connecting rod 10 can be conveniently installed by a lifting shackle.
The upper end of the lower connecting rod 14 is provided with a fork head 141 fixedly connected with the upper end of the arc-shaped adjusting plate 4, the radial flange 131 and the fork head 141 clamp the upper side and the lower side of the connecting rod body 101 in the width direction respectively, so that the first fixing component 1 and the second fixing component 2 are fixed in the left side and the right side of the connecting rod body 101 in the width direction respectively, the first fixing component 1 and the second fixing component 2 are convenient to clamp the crank pin 201 after being fixedly connected with the two ends of the arc-shaped adjusting plate 4 and the crank pin fixing component 3 respectively, and the connecting rod 10 can be driven to translate to the position of an inclined angle capable of being hung out when the.
The arc-shaped adjusting plate 4 is provided with an arc-shaped adjusting groove 41 which can be used for adjusting the crank pins 201 with different clamping radiuses so as to meet the requirements of the disassembly and the assembly of connecting rods of different models. 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 sets 42 which cross the fork heads 141 and the arc-shaped adjusting grooves 41.
Crank pin fixed component 3 includes arc connecting plate 31 and 3 fixed blocks 32, and the thickness direction center at arc connecting plate 31 both ends is equipped with fork 311 respectively, and the plane at arc connecting plate 31 both ends is equipped with circumference arc wall 312 respectively, and 3 radial archs 313 of arc connecting plate 31 middle part equipartition, radial protruding 313 equipartition two parallel arrangement's of every radial protruding 313 radial groove 314. 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 connecting bolt nut groups 42 which transversely penetrate through the circumferential arc-shaped grooves 312 and the arc-shaped adjusting grooves 41.
The end face of one end of the fixed block 32 is abutted against the outer peripheral face of the lower bearing bush 202 outside the crank pin 201 through the rubber pad 5, the other end of the fixed block 32 is provided with a fixed block fork port 321, the fixed block fork port 321 is inserted on the corresponding radial protrusion 313, and the fixed block 32 is fixed on the middle part of the arc-shaped connecting plate 31 through two fixed block connecting bolt nut groups 315 which respectively penetrate through the radial grooves 314 of the fixed block 32 and the radial protrusion 313.
The circumferential arc-shaped grooves 312 at the two ends of the arc-shaped connecting plate 31 and the radial grooves 314 of the 3 radial protrusions 313 in the middle of the arc-shaped connecting plate 31 also play a role in clamping the crank pins 201 with different radiuses, so that the requirement of clamping connecting rods of different types is met, and the application range of the invention is expanded.
The process of driving the connecting rod 10 to translate by using the invention is as follows:
this process is performed after the crankpin bearing cap that has connected the connecting rod 10 to the crankpin 201 has been removed.
The upper ends of the stud bolts 15 are screwed into the threaded holes at the lower ends of the first upper connecting rod 13 and the second upper connecting rod 21 respectively and are screwed tightly. Then the lifting lug ring 12 is sleeved on the upper side of the radial flange 131 of the first upper connecting rod 13 and is limited by a fixing nut 11 screwed on the upper end head of the first upper connecting rod 13.
The connected first upper connecting rod 13 and stud 15 assembly and second upper connecting rod 21 and stud 15 assembly are inserted into the connecting holes 102 on the left and right sides of the connecting rod body 101 in fig. 1, respectively, then the lower connecting rod 14 is inserted into the connecting holes 102 from opposite directions, the fork heads 141 of the lower connecting rod 14 are pulled, respectively, so that the lower ends of the stud 15 are screwed into the corresponding threaded holes of the lower connecting rod 14, respectively, 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 rod 14 clamp the two sides of the connecting rod body 101 in the height direction, respectively, thereby fixing the first fixing component 1 and the second fixing component 2 in the connecting rod body 101, respectively.
The upper ends of the arc-shaped adjusting plates 4 are then inserted into the fork heads 141 of the corresponding lower connecting rods 14, respectively, and the lower ends of the lower connecting rods 14 are fixedly connected to the upper ends of the arc-shaped adjusting plates 4 by the connecting bolt and nut sets 42 traversing through the fork heads 141 and the arc-shaped adjusting grooves 41, without tightening the connecting bolt and nut sets 42 for adjustment.
The fixing block fork openings 321 are inserted into the corresponding radial protrusions 313, and the fixing block 32 is preliminarily fixed on the middle part of the arc-shaped connecting plate 31 through two fixing block connecting bolt and nut sets 315 which respectively penetrate through the fixing block 32 and the radial grooves 314 of the radial protrusions 313. 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, 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 nut groups 42 which transversely pass through the circumferential arc-shaped grooves 312 and the arc-shaped adjusting grooves 41, and the connecting bolt nut groups 42 do not need to be tightened. In the process, the expansion amount of the fork mouth 321 of the fixed block is adjusted according to the diameter of the crank pin 201, and the overlapping length of the arc-shaped adjusting groove 41 of the arc-shaped adjusting plate 4 and the circumferential arc-shaped groove 312 at the end of the corresponding arc-shaped connecting plate 31 ensures that the rubber pad 5 on the end surface of the fixed block 32 is tightly attached to the outer circumferential surface of the lower bearing bush 202 on the outer side of the crank pin 201, and finally, the connecting bolt and nut groups 42 and the connecting bolt and nut groups 315 of the fixed block are respectively screwed, so that the installation of the invention is completed.
After the turning machine is started to rotate the crank pin 201 to a proper angle around the center of the crankshaft, so that the connecting rod 10 is driven to translate to the inclined angle which can be lifted in the drawing 1 through the lifting device, the lifting device is disassembled, and the lifting shackle is installed in the lifting hole 122 of the lifting lug ring 12, so that the connecting rod 101 can be lifted away from the crank pin 201 and is moved out of the rack.
In addition to the above embodiments, the present invention may have other embodiments, and any technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of the claims of the present invention.
Claims (6)
1. The utility model provides a frock is dismantled to marine diesel connecting rod which characterized in that: including fixing the first fixed subassembly in the connecting rod lower extreme connecting rod body left and right sides respectively, the fixed subassembly of second and the fixed subassembly of crank pin that is located the crank pin outside to and two arc regulating plates, the fixed subassembly of crank pin that is convex contains on the lower bearing bush excircle of crank pin, arc regulating plate one end respectively with the fixed subassembly lower extreme of the first fixed subassembly or the fixed subassembly lower extreme fixed connection of second that correspond, the arc regulating plate other end respectively with the both ends fixed connection of the fixed subassembly of crank pin.
2. The marine diesel engine connecting rod disassembling tool according to claim 1, characterized in that: the first fixing assembly comprises a fixing nut, a lifting lug ring, a first upper connecting rod and a lower connecting rod, the second fixing assembly comprises a second upper connecting rod and a second 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 the lower ends of the first upper connecting rod and the second upper connecting rod are fixedly connected with the upper ends of the corresponding lower connecting rods through double-end connecting studs; the lifting lug ring is sleeved at the upper end of the first upper connecting rod and is 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 respectively fixedly connected with the upper ends of the corresponding arc-shaped adjusting plates.
3. The marine diesel engine connecting rod disassembling tool according to claim 2, characterized in that: the upper end of the first upper connecting rod and the upper end of 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-shaped head fixedly connected with the upper end of the arc-shaped adjusting plate, and the radial flange and the fork-shaped head respectively clamp the upper side and the lower side of the connecting rod body in the height direction; 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-shaped heads corresponding to the lower connecting rod, and the lower end of the lower connecting rod is fixedly connected with the upper end of the arc-shaped adjusting plate through a connecting bolt nut group which transversely penetrates through the fork-shaped heads and the arc-shaped adjusting groove.
4. The marine diesel engine connecting rod disassembling tool according to any one of claims 1 to 3, characterized in that: the crank pin fixing assembly comprises an arc-shaped connecting plate and a plurality of fixing blocks, wherein fork openings are formed in the centers of the two ends of the arc-shaped connecting plate in the thickness direction respectively, circumferential arc-shaped grooves are formed in the planes of the two ends of the arc-shaped connecting plate respectively, a plurality of radial protrusions are uniformly distributed in the middle of the arc-shaped connecting plate, each radial protrusion is uniformly provided with two radial grooves which are arranged in parallel, and one end of each fixing block is fixed on; the lower ends of the arc-shaped adjusting plates are respectively inserted into fork openings of the ends of the corresponding 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.
5. The marine diesel connecting rod disassembling tool according to claim 4, characterized in that: 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 protrusion, 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 protrusion; the end face of one end of the fixed block is abutted against the outer peripheral face of the lower bearing bush on the outer side of the crank pin through a rubber pad.
6. The marine diesel engine connecting rod disassembling tool according to claim 2, characterized in that: the lifting lug ring is movably connected with the upper end of the first upper connecting rod, and a lifting plate with a lifting hole extends outwards from the outer peripheral surface of the lifting lug ring.
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 true CN112123267A (en) | 2020-12-25 |
| CN112123267B CN112123267B (en) | 2024-05-10 |
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| 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 |
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| 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 |
|---|---|
| CN112123267B (en) | 2024-05-10 |
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