CN114799729A - Assembly tool and method for reinforcing back ring of cylinder sleeve of large-cylinder-diameter low-speed diesel engine - Google Patents
Assembly tool and method for reinforcing back ring of cylinder sleeve of large-cylinder-diameter low-speed diesel engine Download PDFInfo
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- CN114799729A CN114799729A CN202210270457.9A CN202210270457A CN114799729A CN 114799729 A CN114799729 A CN 114799729A CN 202210270457 A CN202210270457 A CN 202210270457A CN 114799729 A CN114799729 A CN 114799729A
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- back ring
- cylinder sleeve
- reinforcing back
- arc
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000005452 bending Methods 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for
- B23P11/02—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
- B23P11/025—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits by using heat or cold
Abstract
The invention provides an assembly fixture and a method for a cylinder sleeve reinforcing back ring of a large-bore low-speed diesel engine, which comprises an inner support ring, wherein a support locking mechanism matched with a central hole of a cylinder sleeve is arranged on the outer circumference of the inner support ring; the top end of the inner support ring is fixed with an arc-shaped guide plate through a vertical plate; the arc top end of the arc guide plate is matched with the arc inner wall of the reinforcing back ring to be assembled; the reinforced back ring is characterized by further comprising a ring sleeve for hoisting the reinforced back ring, the ring sleeve is of an open structure, connecting lugs are formed by bending the open structure, and hoisting holes are formed in the connecting lugs. The problem of rework and potential safety hazard that adopt vertical mounting means to lead to between cylinder jacket and the enhancement back of the body ring is solved, installation time has been shortened greatly, refuses the time limit for a project repeatedly, has reached the purpose and the effect that have improved production efficiency and safety by a wide margin, can promote to the mode improvement of the large-scale vertical installation of generality.
Description
Technical Field
The invention relates to an assembly tool and an assembly method for a cylinder sleeve reinforcing back ring of a large-cylinder-diameter low-speed diesel engine, and belongs to the technical field of assembly of parts of diesel engines.
Background
The cylinder liner is the central working portion of the reciprocating engine in which the piston moves. The reinforcing back ring is a supporting ring sleeve arranged on the cylinder sleeve of the diesel engine, plays a role in supporting and reinforcing, and is generally arranged in a hot sleeve mounting mode. As shown in fig. 1, reference numeral 1 denotes a reinforcing back ring.
In the middle of the process of the important spare part cylinder liner assembly reinforcing back of the body ring of diesel engine, discover through the investigation after, all domestic preparation host computer producers all adopt vertical assembly methods, in the concrete installation, for example, a cylinder liner that the bore is 500mm is about 2000kg, at first need carry out the hot jacket reinforcing back of the body ring after the cylinder liner blank output, later carry out secondary finish machining to the finished product again, original assembly process is: firstly, erecting a horizontally laid blank cylinder sleeve, and performing one-time turnover operation, wherein a cylinder sleeve turnover tool is needed in the process; in addition, because the reinforcing back ring is not provided with a hoisting position, two hoisting nuts are required to be welded at the upper edge of the reinforcing back ring for simple hoisting, then the hot jacket operation of the reinforcing back ring is required to be carried out by ascending operation according to the size of the cylinder sleeve, so that the problems of high difficulty, high danger, high material consumption, more reciprocating operation, large artificial uncontrollable factors and cylinder sleeve scrapping caused by the clamping of the reinforcing back ring are easily caused; and to some extent, involves a series of problems of safety, time, personnel, etc., and therefore, improvement in the assembly process is required.
Disclosure of Invention
In view of the above problems, the invention aims to provide an assembly fixture and an assembly method for a cylinder sleeve reinforcing back ring of a large-cylinder-diameter low-speed diesel engine, which solve the problems of rework and potential safety hazards caused by a vertical installation mode between the cylinder sleeve and the reinforcing back ring, greatly shorten the installation time, reject the repeated construction period, achieve the purposes and effects of greatly improving the production efficiency and safety, and can be popularized to the mode improvement of general large-scale vertical installation.
In order to achieve the technical features, the invention is realized as follows: the assembly fixture for the reinforcing back ring of the cylinder sleeve of the large-cylinder-diameter low-speed diesel engine comprises an inner support ring, wherein a support locking mechanism matched with a central hole of the cylinder sleeve is arranged on the outer circumference of the inner support ring; the top end of the inner support ring is fixed with an arc-shaped guide plate through a vertical plate; the arc top end of the arc guide plate is matched with the arc inner wall of the reinforcing back ring to be assembled;
the reinforced back ring is characterized by further comprising a ring sleeve for hoisting the reinforced back ring, the ring sleeve is of an open structure, connecting lugs are formed by bending the open structure, and hoisting holes are formed in the connecting lugs.
The supporting and locking mechanism comprises a plurality of bolt holes uniformly distributed and processed on the inner supporting ring, and the bolt holes are radially arranged; and a jacking bolt is matched on the bolt hole through thread transmission, and the inner support ring is supported inside the central hole through the jacking bolt.
And a limiting angle plate is fixed on the outer wall of the inner supporting ring and positioned on the opposite side of the vertical plate, and the limiting angle plate is matched with the central hole.
And a reinforcing rib plate is arranged between the connecting lug and the outer wall of the ring sleeve.
An inclined supporting plate is fixedly arranged between the arc-shaped guide plate and the vertical plate.
And an included angle A is formed between the top end radial line of the arc-shaped guide plate and the axis of the cylinder sleeve.
The value of A is 5-8 degrees.
During assembly, the device also comprises a horizontal supporting structure for supporting the cylinder sleeve; the horizontal support structure comprises a head base plate, an arc-shaped plate is supported at the top end of the head base plate, the head of the cylinder sleeve is supported at the top end of the arc-shaped plate, and the tail of the cylinder sleeve is supported at the top end of a tail base plate.
The number of the puller bolts is at least four, and the puller bolts are symmetrically arranged along the axial lead of the cylinder sleeve.
The method for assembling the reinforcing back ring of the cylinder sleeve of the large-cylinder-diameter low-speed diesel engine by adopting the assembling tool comprises the following steps of:
step one, horizontal support and limit of a cylinder sleeve:
according to the size and the supporting position requirements of the cylinder sleeve, arranging a corresponding arc-shaped plate, a head base plate and a tail base plate, supporting the whole cylinder sleeve between the arc-shaped plate and the tail base plate at a certain inclination angle, and ensuring that the height of the side of the reinforcing back ring assembly section is higher than that of the other end;
step two, adjusting and installing the inner support ring:
sleeving the inner support ring in the center hole, and then adjusting the position of a corresponding puller bolt to ensure that the topmost end of the arc-shaped guide plate is flush with the outer top end of the reinforcing back ring assembly section;
step three, heating treatment of the reinforcing back ring:
according to the heating process requirement during the assembly of the reinforcing back ring, the reinforcing back ring is heated to ensure that the reinforcing back ring can be smoothly sleeved on the reinforcing back ring assembly section of the cylinder sleeve subsequently;
fourthly, hoisting the reinforcing back ring:
installing a ring sleeve on the heated reinforcing back ring, and hoisting the reinforcing back ring in a hoisting mode;
step five, equipment for reinforcing the back ring:
after the reinforcing back ring is hoisted, the reinforcing back ring is sleeved and supported at the top of the arc-shaped guide plate, and the reinforcing back ring is pushed along the arc-shaped guide plate to be sleeved outside the assembling section of the reinforcing back ring.
The invention has the following beneficial effects:
1. by adopting the assembly tool, the original vertical assembly mode is replaced by the horizontal assembly mode, the rework and potential safety hazards caused by the vertical installation mode are solved, the installation time is greatly shortened, the repeated construction period is rejected, the purposes and effects of greatly improving the production efficiency and safety are achieved, and the assembly tool can be popularized to the mode improvement of general large-scale vertical installation.
2. By adopting the assembly tool, the steps of turning over operation are reduced; the danger of climbing operation and cylinder sleeve toppling is avoided; the handling rate of the large pieces is reduced, and the workers can carry out simple operation.
3. Reduce and strengthen back of body ring welding and hoist and mount frock activity duration of polishing: taking six cylinder sleeves as an example, the period is shortened from original 6 hours to 2 hours, and the number of workers is reduced from original 5 workers to 3 workers.
4. The production management, the technical management and the quality management are in accordance with the standards of modern enterprises.
Drawings
The invention is further illustrated by the following figures and examples.
FIG. 1 is a view showing an assembly structure of a reinforcing back ring and a cylinder liner in the present invention.
Fig. 2 is a front sectional view of an inner support ring of the present invention.
Fig. 3 is a front view of the inner support ring of the present invention.
Fig. 4 is a front view of the cuff of the present invention.
FIG. 5 is a first perspective three-dimensional view of the inner support ring and cylinder liner of the present invention after assembly.
FIG. 6 is a second perspective three-dimensional view of the inner support ring and cylinder liner of the present invention after assembly.
Fig. 7 is a three-dimensional view of the reinforced back ring and cuff of the present invention after assembly.
In the figure: the device comprises a reinforcing back ring 1, a cylinder sleeve 2, an inner supporting ring 3, bolt holes 4, a vertical plate 5, an arc-shaped guide plate 6, an inclined supporting plate 7, a limiting angle plate 8, a ring sleeve 9, a reinforcing rib plate 10, a connecting lug 11, a hanging hole 12, a reinforcing back ring assembling section 13, an arc-shaped plate 14, a head base plate 15, a puller bolt 16, a center hole 17 and a tail base plate 18.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
Example 1:
referring to fig. 1-7, the assembly fixture for the reinforcing back ring of the cylinder sleeve of the large-diameter low-speed diesel engine comprises an inner support ring 3, wherein a support locking mechanism matched with a central hole 17 of a cylinder sleeve 2 is arranged on the outer circumference of the inner support ring 3; the top end of the inner support ring 3 is fixed with an arc-shaped guide plate 6 through a vertical plate 5; the arc top end of the arc guide plate 6 is matched with the arc inner wall of the reinforcing back ring 1 to be assembled; the reinforced back ring lifting device is characterized by further comprising a ring sleeve 9 used for lifting the reinforced back ring 1, wherein the ring sleeve 9 is of an open structure, a connecting lug 11 is formed in the opening through bending, and a lifting hole 12 is formed in the connecting lug 11. Through foretell assembly fixture, can replace original vertical assembly methods for horizontal assembly methods, solve rework and potential safety hazard that vertical mounting methods lead to, shorten the installation time greatly, refused the time limit for a project repeatedly, reached purpose and effect that has improved production efficiency and safety by a wide margin, can promote to the mode improvement of the large-scale vertical installation of commonality.
Further, the supporting and locking mechanism comprises a plurality of bolt holes 4 uniformly distributed and processed on the inner supporting ring 3, and the bolt holes 4 are radially arranged; the bolt holes 4 are matched with puller bolts 16 through thread transmission, and the inner support ring 3 is supported inside a central hole 17 through the puller bolts 16. The supporting and locking mechanism can be used for adjusting the supporting position of the inner supporting ring 3, and further adjusting the supporting height of the arc-shaped guide plate 6, so that the arc-shaped guide plate is flush with the top end of the reinforcing back ring assembling section 13, and further guiding in the assembling process of the subsequent reinforcing back ring 1 is realized.
Furthermore, a limiting angle plate 8 is fixed on the outer wall of the inner supporting ring 3 and is positioned at the opposite side of the vertical plate 5, and the limiting angle plate 8 is matched with the central hole 17. The limiting angle plate 8 can be used for limiting the inner support ring 3 in the process of assembling, so that the inner support ring can be accurately positioned and installed in the center hole 17.
Furthermore, a reinforcing rib plate 10 is arranged between the connecting lug 11 and the outer wall of the ring sleeve 9. The structural strength between the lugs 11 and the loops 9 is enhanced by the stiffening webs 10.
Furthermore, an inclined supporting plate 7 is fixedly arranged between the arc-shaped guide plate 6 and the vertical plate 5. The strength and stability of the supporting structure between the arc-shaped guide plate 6 and the vertical plate 5 are enhanced by the inclined supporting plate 7.
Furthermore, an included angle A is formed between the top end radial line of the arc-shaped guide plate 6 and the axis of the cylinder sleeve 2. The value of A is 5-8 degrees. By adopting the inclination angle, the subsequent cylinder sleeve 2 can be smoothly assembled on the reinforcing back ring assembly section 13 in a sliding manner.
Further, during assembly, the device also comprises a horizontal supporting structure for supporting the cylinder sleeve 2; the horizontal support structure comprises a head liner plate 15, an arc-shaped plate 14 is supported at the top end of the head liner plate 15, the head of the cylinder sleeve 2 is supported at the top end of the arc-shaped plate 14, and the tail of the cylinder sleeve 2 is supported at the top end of a tail liner plate 18. The horizontal support of the cylinder sleeve 2 can be realized through the horizontal support structure, so that the traditional vertical assembly is replaced. And guaranteed the stability of the horizontal support of cylinder liner 2, prevent that it from taking place to rock.
Further, the number of the puller bolts 16 is at least four, and the puller bolts are symmetrically arranged along the axial lead of the cylinder sleeve 2. The supporting position of the inner support ring 3 inside the cylinder liner 2 is ensured by adopting the plurality of groups of tightening bolts 16.
Further, the cylinder sleeve 2 is horizontally laid at an angle of 30 degrees in the horizontal assembly process.
Example 2:
the method for assembling the reinforcing back ring of the cylinder sleeve of the large-cylinder-diameter low-speed diesel engine by adopting the assembling tool comprises the following steps of:
step one, horizontal supporting and limiting of the cylinder sleeve 2:
according to the size and the requirement of a supporting part of the cylinder sleeve 2, arranging a corresponding arc-shaped plate 14, a head cushion plate 15 and a tail cushion plate 18, supporting the whole cylinder sleeve 2 between the arc-shaped plate 14 and the tail cushion plate 18 at a certain inclination angle, and ensuring that the height of the side of the reinforcing back ring assembly section 13 is higher than that of the other end;
step two, adjusting and installing the inner support ring 3:
sleeving the inner support ring 3 in the central hole 17, and then adjusting the position of a corresponding puller bolt 16 to ensure that the topmost end of the arc-shaped guide plate 6 is flush with the outer top end of the reinforcing back ring assembly section 13;
step three, heating treatment of the reinforcing back ring 1:
according to the heating process requirement when the reinforcing back ring 1 is assembled, the reinforcing back ring 1 is heated to ensure that the reinforcing back ring assembling section 13 of the cylinder sleeve 2 can be smoothly sleeved subsequently;
fourthly, hoisting the reinforcing back ring 1:
installing a ring sleeve 9 on the heated reinforcing back ring 1, and hoisting the reinforcing back ring 1 in a hoisting manner;
step five, equipment of the reinforced back ring 1:
after the reinforcing back ring 1 is hoisted, the reinforcing back ring is sleeved and supported at the top of the arc-shaped guide plate 6, and the reinforcing back ring 1 is pushed along the arc-shaped guide plate 6 to be sleeved outside the reinforcing back ring assembling section 13.
Claims (10)
1. The assembly fixture for the reinforcing back ring of the cylinder sleeve of the large-cylinder-diameter low-speed diesel engine is characterized by comprising an inner support ring (3), wherein a support locking mechanism matched with a central hole (17) of the cylinder sleeve (2) is arranged on the outer circumference of the inner support ring (3); the top end of the inner support ring (3) is fixed with an arc-shaped guide plate (6) through a vertical plate (5); the arc top end of the arc guide plate (6) is matched with the arc inner wall of the reinforcing back ring (1) to be assembled;
the reinforced back ring lifting device is characterized by further comprising a ring sleeve (9) used for lifting the reinforced back ring (1), wherein the ring sleeve (9) is of an open structure, a connecting lug (11) is formed in the opening in a bending mode, and a lifting hole (12) is formed in the connecting lug (11).
2. The assembly fixture for the reinforcing back ring of the cylinder sleeve of the large-bore low-speed diesel engine according to claim 1, characterized in that: the supporting and locking mechanism comprises a plurality of bolt holes (4) which are uniformly distributed and processed on the inner supporting ring (3), and the bolt holes (4) are arranged in a radial direction; and a jacking bolt (16) is matched on the bolt hole (4) through thread transmission, and the inner support ring (3) is supported inside the central hole (17) through the jacking bolt (16).
3. The assembly fixture for the reinforcing back ring of the cylinder sleeve of the large-bore low-speed diesel engine according to claim 1, characterized in that: and a limiting angle plate (8) is fixed on the outer wall of the inner supporting ring (3) and positioned on the opposite side of the vertical plate (5), and the limiting angle plate (8) is matched with the central hole (17).
4. The assembly fixture for the reinforcing back ring of the cylinder liner of the large-bore low-speed diesel engine according to claim 1, characterized in that: and a reinforcing rib plate (10) is arranged between the connecting lug (11) and the outer wall of the ring sleeve (9).
5. The assembly fixture for the reinforcing back ring of the cylinder sleeve of the large-bore low-speed diesel engine according to claim 1, characterized in that: an inclined supporting plate (7) is fixedly arranged between the arc-shaped guide plate (6) and the vertical plate (5).
6. The assembly fixture for the reinforcing back ring of the cylinder sleeve of the large-diameter low-speed diesel engine according to claim 1 or 5, characterized in that: and an included angle A is formed between the top end radial line of the arc-shaped guide plate (6) and the axis of the cylinder sleeve (2).
7. The assembly fixture for the reinforcing back ring of the cylinder sleeve of the large-bore low-speed diesel engine according to claim 6, characterized in that: the value of A is 5-8 degrees.
8. The assembly fixture for the reinforcing back ring of the cylinder sleeve of the large-bore low-speed diesel engine according to claim 1, characterized in that: during assembly, the device also comprises a horizontal supporting structure for supporting the cylinder sleeve (2); the horizontal supporting structure comprises a head base plate (15), an arc-shaped plate (14) is supported at the top end of the head base plate (15), the head of the cylinder sleeve (2) is supported at the top end of the arc-shaped plate (14), and the tail of the cylinder sleeve (2) is supported at the top end of a tail base plate (18).
9. The assembly fixture for the reinforcing back ring of the cylinder sleeve of the large-bore low-speed diesel engine according to claim 2, characterized in that: the number of the puller bolts (16) is at least four, and the puller bolts are symmetrically arranged along the axial lead of the cylinder sleeve (2).
10. The method for assembling the reinforcing back ring of the cylinder sleeve of the large-diameter low-speed diesel engine by using the assembling tool of any one of claims 1 to 9 is characterized by comprising the following steps of:
step one, horizontal support and limit of the cylinder sleeve (2):
according to the size and supporting position requirements of the cylinder sleeve (2), arranging a corresponding arc-shaped plate (14), a head base plate (15) and a tail base plate (18), supporting the whole cylinder sleeve (2) between the arc-shaped plate (14) and the tail base plate (18) at a certain inclination angle, and ensuring that the height of the side where the reinforcing back ring assembling section (13) is located is higher than that of the other end;
step two, adjusting and installing the inner support ring (3):
sleeving the inner support ring (3) in the central hole (17), and then adjusting the position of a corresponding puller bolt (16) to ensure that the topmost end of the arc-shaped guide plate (6) is flush with the outer top end of the reinforcing back ring assembly section (13);
step three, heating treatment of the reinforcing back ring (1):
according to the heating process requirement when the reinforcing back ring (1) is assembled, the reinforcing back ring (1) is heated to ensure that the reinforcing back ring assembly section (13) of the cylinder sleeve (2) can be sleeved smoothly in the follow-up process;
fourthly, hoisting the reinforcing back ring (1):
installing a ring sleeve (9) on the heated reinforcing back ring (1), and hoisting the reinforcing back ring (1) in a hoisting manner;
step five, equipment of the reinforced back ring (1):
after the reinforcing back ring (1) is hoisted, the reinforcing back ring is sleeved and supported at the top of the arc-shaped guide plate (6), and the reinforcing back ring (1) is pushed along the arc-shaped guide plate (6) to be sleeved outside the reinforcing back ring assembling section (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210270457.9A CN114799729B (en) | 2022-03-18 | 2022-03-18 | Assembly tool and method for reinforcing back ring of cylinder liner of large-diameter low-speed diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210270457.9A CN114799729B (en) | 2022-03-18 | 2022-03-18 | Assembly tool and method for reinforcing back ring of cylinder liner of large-diameter low-speed diesel engine |
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| Publication Number | Publication Date |
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| CN114799729A true CN114799729A (en) | 2022-07-29 |
| CN114799729B CN114799729B (en) | 2024-03-08 |
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| CN202210270457.9A Active CN114799729B (en) | 2022-03-18 | 2022-03-18 | Assembly tool and method for reinforcing back ring of cylinder liner of large-diameter low-speed diesel engine |
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- 2022-03-18 CN CN202210270457.9A patent/CN114799729B/en active Active
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| JP2012520179A (en) * | 2009-03-12 | 2012-09-06 | サンドヴィク インテレクチュアル プロパティー アーゲー | Roller with drive shaft and roller ring and method for assembling such a roller |
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| CN114799729B (en) | 2024-03-08 |
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