CN202592257U - Fixing device for mounting of low-speed diesel engine piston assembly for ship - Google Patents
Fixing device for mounting of low-speed diesel engine piston assembly for ship Download PDFInfo
- Publication number
- CN202592257U CN202592257U CN 201220149037 CN201220149037U CN202592257U CN 202592257 U CN202592257 U CN 202592257U CN 201220149037 CN201220149037 CN 201220149037 CN 201220149037 U CN201220149037 U CN 201220149037U CN 202592257 U CN202592257 U CN 202592257U
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- piston
- fixed body
- cylinder
- fixing body
- diesel engine
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Abstract
The utility model discloses a fixing device for mounting of a low-speed diesel engine piston assembly for a ship. The fixing device comprises a piston fixing body and a cylinder fixing body, wherein the piston fixing body is fixedly connected to the bottom of a piston rod; a vertical through hole is formed in the piston fixing body; a vertical opening groove is formed in the side surface of the piston fixing body; the upper end of the opening groove is a blind end; the cylinder fixing body is fixedly connected to the lower plane of a cylinder; a vertical through hole is formed in the cylinder fixing body; a horizontal cylindrical pin is arranged on the side surface of the cylinder fixing body; and the cylindrical pin can be movably embedded into the opening groove in the piston fixing body and freely dismounted. The fixing device has the advantages of simple structure, convenience in dismounting, and no adjustment; the working intensity can be reduced, the working cycle can be shortened, and the labor productivity and the production cost can be effectively improved.
Description
Technical field:
The utility model relates to a kind of diesel engine assembling and uses instrument, and particularly a kind of marine low speed diesel engine piston assembly is installed and used fixture.
Background technology:
The installation of piston assembly is the important step of marine low speed diesel engine in the assembling manufacture process.As shown in Figure 1; In the diesel engine cylinder block prepackage process; The piston assembly of being made up of piston head 1 and piston rod 4 utilizes the lower plane of cylinder block 3 and the screw of piston rod 4 bottoms after being hung in cylinder block 3 and cylinder jacket 2, and the special setting tool of needs employing fix piston assembly.In the total process of assembling of Diesel Engine Complete Machine, the cylinder block 3 (comprising piston assembly) that prepackage is good is sling and frame 9 is closed up with support 11, and after connecting piston rod 4 and crosshead pin 7, the piston assembly setting tool is removed.Because piston rod 4 is controlled in certain scope to the required distance of cylinder block 3 lower planes; And the piston rod 4 of same model main frame has uncertainty to the distance of cylinder block 3 lower planes; Therefore piston assembly is when prepackage; Must carry out being connected of piston rod 4 and crosshead pin 7 through special aid, with the distance of adjustment piston rod 4 to cylinder block 3 baseplanes.
As shown in Figure 2; The existing piston assembly is installed and is utilized two bolt e location-plate d to be fixed on the below of cylinder body 3 with setting tool; The distance of location-plate d and cylinder body 3 lower planes confirms that by two distance sink tube a the other end of location-plate d is installed with another bolt c, and this bolt c is rotated with in the bottom of piston rod 4.During cylinder block 3 prepackages, need the distance between adjustment piston rod 4 bottoms and the location-plate d, make location-plate d and piston rod 4 bottoms leave certain clearance b.After setting tool installed, piston rod 4 was to the fixed distance of cylinder block 3 lower planes.As shown in Figure 1, when general assembly connects crosshead pin 7 with piston rod 4, dish dynamic crankshaft 10; Making connecting rod 8 drive crosshead pin 7 slowly raises; Contact with piston rod 4 until crosshead pin 7, piston rod 4 stressed liftings are after setting tool no longer bears the gravity of piston assembly; Be hinged bolt c, and then dismantle whole setting tools.Various main frames for same model; Owing to reasons such as ship type, shipowner's specific (special) requirements, have specified optimized point power and oil inflame explosion pressure for setting main frame, the thickness of depositing air cushion sheet 6 between piston rod 4 and the crosshead pin 7 is a underrange; Be that piston rod 4 is indefinite to the distance of crosshead pin 7; If piston rod 4 causes crosshead pin 7 to coil to top dead centre to the size of crosshead pin 7 distances greater than design, piston rod 4 is with crosshead pin 7 and deposit air cushion sheet 6 and also fail to contact.
In sum, piston assembly of the prior art is installed and is had following problem with setting tool:
(1) in cylinder body prepackage process, need the distance of adjustment piston rod 4, guarantee the gap b between location-plate d and the piston rod 4 to cylinder block 3 baseplanes, thus complex operation, improved greatly and hung the running time that piston assembly takies, reduced labor productivity.
(2) can't adjust owing to existing fixed instrument height; Or adjustment is extremely loaded down with trivial details; For a series of same model main frames of depositing air cushion sheet 6 with Different Optimization point power, different-thickness, need to prepare the setting tool that a series of height differ, increased manufacturing cost; Strengthened the difficulty of tools sort, caused easily selecting the loaded down with trivial details maloperation that causes because of instrument.
The utility model content:
The purpose of the utility model be to overcome existing piston assembly install with setting tool can't adjust, the deficiency of complicated operation; Provide a kind of marine low speed diesel engine piston assembly to install and use fixture; The advantage that it has simple in structure, convenient disassembly, need not adjust; Piston assembly hangs in the loaded down with trivial details adjustment of cylinder body distance in the time of can avoiding the cylinder body prepackage, and the setting tool that need not prepare a series of differing heights is to satisfy the specification requirement of the different main frames of same model.
Based on above-mentioned purpose, the technical scheme that the utility model is taked is following:
A kind of marine low speed diesel engine piston assembly is installed and is used fixture; It comprises piston fixed body and cylinder body fixed body, and said piston fixed body is fixedly connected on the bottom of piston rod, and this piston fixed body is provided with a vertical through hole; And the side is provided with a vertical open slot; The upper end of this open slot is a cecum, and said cylinder body fixed body is fixedly connected on the lower plane of cylinder block, and this cylinder body fixed body is provided with a vertical through hole; And the side is provided with a horizontal straight pin, and this straight pin can embed in the open slot of piston fixed body versatilely and freely split.
The described marine low speed diesel engine piston assembly of the utility model is installed and is used fixture, and its piston fixed body is fixedly connected with piston rod through bolt, and said cylinder body fixed body is fixedly connected with cylinder block through bolt.
The utlity model has following advantage:
(1) saved the step of using original setting tool adjustment piston rod and cylinder body baseplane distance in the prepackage stage, significantly reduced the holding time of driving, improved labor productivity, made assembling become simpler, convenient;
(2) guaranteed that the identical a series of main frames of model can use same piston assembly to install and use fixture, avoided having reduced the Assembling Production cost, reduced the misuse rate of instrument because of the small difference of height dimension will be equipped with the different fixed instrument.
Description of drawings:
Fig. 1 is the scheme of installation of marine low speed diesel engine piston assembly.
Fig. 2 is that the sketch map with fixture is installed in existing marine low speed diesel engine piston assembly.
Fig. 3 is the structural representation of the utility model.
Fig. 4 is the user mode figure of the utility model.
Among the figure: the 1-piston head; The 2-cylinder jacket; The 3-cylinder block; The 4-piston rod; 5-piston assembly fixture; 6-deposits the air cushion sheet; The 7-crosshead pin; The 8-connecting rod; The 9-frame; The 10-bent axle; The 11-support; The 5a-bolt; 5b-piston fixed body; 5c-cylinder body fixed body; The 5d-bolt; The 5ba-through hole; The 5bb-open slot; The 5ca-straight pin; The 5cb-through hole.
The specific embodiment:
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further detailed description, but can not limit the protection domain of the utility model with this.
See also Fig. 3, the piston assembly of diagram marine low speed diesel engine is installed and is comprised piston fixed body 5b and cylinder body fixed body 5c with fixture 5.See also Fig. 4, said piston fixed body 5b is fixedly connected on the bottom of piston rod 4, and said cylinder body fixed body 5c is fixedly connected on the lower plane of cylinder block 3, and this piston fixed body 5b adopts the segmentation movable to connect with being connected of cylinder body fixed body 5c.Said piston fixed body 5b is provided with a vertical through hole 5ba; And the side is provided with a vertical open slot 5bb; The upper end of this open slot 5bb is a cecum; Be installed with a connecting bolt 5a in this through hole 5ba, the front end of this connecting bolt 5a is rotated with in the positioning screw hole on piston rod 4, thereby piston fixed body 5b is fixedly connected with piston rod 4.Said cylinder body fixed body 5c is provided with a vertical through hole 5cb; And the side is provided with a horizontal straight pin 5ca; Be installed with a connecting bolt 5d in this through hole 5cb; The front end of this connecting bolt 5d is rotated with in the reservation screw of cylinder block 3 lower planes, thereby said cylinder body fixed body 5c is fixedly connected with cylinder block 3.
The straight pin 5ca of said cylinder body fixed body 5c can embed among the open slot 5bb of piston fixed body 5b versatilely and freely split, thereby piston fixed body 5b and cylinder body fixed body 5c can easily be made up and split.When depositing air cushion sheet 6 and do not contact with piston rod 4, piston fixed body 5b receives pulling force vertically downward, top cecum and the straight pin 5ca on the cylinder body fixed body 5c of the open slot 5bb of piston fixed body 5b is closely conflicted, thereby reach stress balance.
See also Fig. 4; The lower plane that piston rod 4 is fixed at a certain distance cylinder block 3 with fixture 5 is installed in described marine low speed diesel engine piston assembly; Owing to ignored the thickness of depositing air cushion sheet 6, make piston rod 4 be slightly larger than when being positioned at top dead centre crosshead pin 7 and deposit on the air cushion sheet 6 plane to the beeline of cylinder block 3 lower planes to the distance of cylinder block 3 baseplanes; When general assembly connected piston rod 4 with crosshead pin 7, jiggering was near top dead centre, and the air cushion sheet 6 of depositing on the crosshead pin 7 contacts with piston rod 4 bottoms; And piston rod 4 is promoted, because the effect of bolt 5a, piston rod fixed body 5b also is raised; Thereby 5c separates with the cylinder body fixed body; Both all do not receive the effect of piston assembly gravity, can dismantle said fixture 5 easily, finally successfully accomplish being linked and packed of piston assembly and connecting rod crosshead by this fixture 5.
The installation and removal process of the utility model is simplified greatly; Easy to operate; Need not control fabrication data, solve in the prior art one-piece piston assembly and installed with setting tool owing to fixed the distance of piston rod 4 and cylinder block 3 lower planes, and the problem of being inconvenient to adjust; Solved in the prior art for same model and different-thickness is deposited the serial main frame of air cushion sheet 6 and need be equipped with a series of piston assemblies the problem with setting tool is installed.
More than be the preferred forms of the utility model, can not limit the protection domain of the utility model with this.The protection domain of the utility model also comprises other conspicuous to those skilled in the art equivalent transformation and substitutes.
Claims (3)
1. a marine low speed diesel engine piston assembly is installed and is used fixture; It is characterized in that: said fixture comprises piston fixed body and cylinder body fixed body, and said piston fixed body is fixedly connected on the bottom of piston rod, and this piston fixed body is provided with a vertical through hole; And the side is provided with a vertical open slot; The upper end of this open slot is a cecum, and said cylinder body fixed body is fixedly connected on the lower plane of cylinder block, and this cylinder body fixed body is provided with a vertical through hole; And the side is provided with a horizontal straight pin, and this straight pin can embed in the open slot of piston fixed body versatilely and freely split.
2. marine low speed diesel engine piston assembly according to claim 1 is installed and used fixture, it is characterized in that: said piston fixed body is fixedly connected with piston rod through bolt.
3. marine low speed diesel engine piston assembly according to claim 2 is installed and used fixture, it is characterized in that: said cylinder body fixed body is fixedly connected with cylinder block through bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220149037 CN202592257U (en) | 2012-04-10 | 2012-04-10 | Fixing device for mounting of low-speed diesel engine piston assembly for ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220149037 CN202592257U (en) | 2012-04-10 | 2012-04-10 | Fixing device for mounting of low-speed diesel engine piston assembly for ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202592257U true CN202592257U (en) | 2012-12-12 |
Family
ID=47309841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220149037 Expired - Lifetime CN202592257U (en) | 2012-04-10 | 2012-04-10 | Fixing device for mounting of low-speed diesel engine piston assembly for ship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202592257U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089476A (en) * | 2013-01-17 | 2013-05-08 | 合肥熔安动力机械有限公司 | Large marine low speed diesel engine piston fixing tool |
| CN107877413A (en) * | 2017-10-26 | 2018-04-06 | 中船动力有限公司 | Marine low speed diesel engine piston assembly on-hook frock and method |
| 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 |
| CN110549110A (en) * | 2019-07-31 | 2019-12-10 | 上海中船三井造船柴油机有限公司 | Installation method and auxiliary tool for dual-fuel low-speed diesel engine piston |
| CN111716266A (en) * | 2020-06-28 | 2020-09-29 | 上海中船三井造船柴油机有限公司 | Internal fixing device and method for crosshead pin and slider assembly of marine diesel engine |
-
2012
- 2012-04-10 CN CN 201220149037 patent/CN202592257U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089476A (en) * | 2013-01-17 | 2013-05-08 | 合肥熔安动力机械有限公司 | Large marine low speed diesel engine piston fixing tool |
| CN107877413A (en) * | 2017-10-26 | 2018-04-06 | 中船动力有限公司 | Marine low speed diesel engine piston assembly on-hook frock and method |
| 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 |
| CN110549110A (en) * | 2019-07-31 | 2019-12-10 | 上海中船三井造船柴油机有限公司 | Installation method and auxiliary tool for dual-fuel low-speed diesel engine piston |
| CN110549110B (en) * | 2019-07-31 | 2021-05-04 | 上海中船三井造船柴油机有限公司 | Installation method and auxiliary tool for dual-fuel low-speed diesel engine piston |
| CN111716266A (en) * | 2020-06-28 | 2020-09-29 | 上海中船三井造船柴油机有限公司 | Internal fixing device and method for crosshead pin and slider assembly of marine diesel engine |
| CN111716266B (en) * | 2020-06-28 | 2024-02-02 | 上海中船三井造船柴油机有限公司 | Built-in fixing device and method for cross pin slide block assembly of marine diesel engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121212 |
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| CX01 | Expiry of patent term |