CN113979308B - Special balance adjustment device for marine crankshaft red sleeve assembly - Google Patents
Special balance adjustment device for marine crankshaft red sleeve assembly Download PDFInfo
- Publication number
- CN113979308B CN113979308B CN202111403992.9A CN202111403992A CN113979308B CN 113979308 B CN113979308 B CN 113979308B CN 202111403992 A CN202111403992 A CN 202111403992A CN 113979308 B CN113979308 B CN 113979308B
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- rod
- screw
- adjusting rod
- counterweight
- adjusting
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention provides a special balance adjusting device for assembling a marine crankshaft red sleeve, which comprises an adjusting rod extending leftwards and rightwards, wherein the left end of the adjusting rod penetrates through a counterweight main body and is movably connected with the counterweight main body, and a counterweight lifting rod is arranged at the right end of the adjusting rod; the right side of the adjusting rod is provided with a plurality of arm adjusting holes for installing a suspender, and a clamping clearance for clamping the crank and shaft assembly is formed between the suspender and the adjusting rod; the left end of the adjusting rod is provided with a driving mechanism for driving the counterweight main body to move along the extending direction of the adjusting rod; the lateral wall processing of counter weight main part has the mounting groove that is used for connecting the balancing weight, rings are installed at the top of counter weight main part. The invention fully utilizes the lever principle to eliminate the unstable factors of the crank and shaft assembly in the adjusting process before assembly, and simultaneously utilizes the principle of screw nut transmission to realize quick fine adjustment, accurately adjust the counterweight position, offset the eccentric moment of the assembly after hoisting and ensure the requirement of the axis perpendicularity.
Description
Technical Field
The invention relates to the technical field of marine semi-combined crankshaft assembly, in particular to a special balance adjusting device for marine crankshaft red jacket assembly.
Background
The marine semi-combined crankshaft parts are assembled by utilizing the interference fit of the shaft hole size and adopting a red sleeve mode. Assembling and separating two processes: the single assembly is the assembly between the revolving body shaft part and the crank, and the assembly can be completed by only lifting the shaft part to ensure that the axis of the shaft part coincides with the center line of the hot-charging hole of the crank, so that a crank and shaft assembly is formed. The whole assembly is an assembly process of sequentially assembling the assembled assemblies, and assembling the shaft of one assembly into the hot assembly hole of the crank of the other assembly.
The assembly of the marine semi-combined crankshaft after single assembly is in a unbalanced state relative to the axis, the weight range of the assembly is 9t-55t, the assembly depth is 220-430mm, and meanwhile, the process setting assembly clearance is small to ensure the assembly precision requirement. Under the premise, the axis of the combined body in the hanging state of the crane needs to be adjusted to be within 0.05mm/m vertical to the horizontal plane, and the process is extremely difficult to operate and wastes a great amount of time for adjustment. Once the adjustment is disqualified or the axis of the assembly is inclined due to the movement in the lifting process, the inclined side edge of the shaft can be clamped in the crank hole in the assembly process, and can not descend to the assembly position, so that the assembly is failed. Therefore, a special balance adjusting device for assembling the marine crankshaft red sleeve needs to be designed.
Disclosure of Invention
According to the technical problems, the special balance adjusting device for assembling the marine crankshaft red sleeve is provided.
The invention adopts the following technical means:
the special balance adjusting device for assembling the marine crankshaft red sleeve comprises an adjusting rod which extends leftwards and rightwards, wherein a through hole matched with the adjusting rod is formed in the middle of a counterweight main body, the extending direction of the through hole is parallel to that of the adjusting rod, the left end of the adjusting rod penetrates through the through hole and is movably connected with the counterweight main body, a counterweight lifting rod is arranged at the right end of the adjusting rod, and the counterweight lifting rod extends forwards and backwards;
the right side of the adjusting rod is provided with a plurality of force arm adjusting holes extending up and down, the force arm adjusting holes are used for installing a suspender, and a clamping gap for clamping a crank and shaft assembly is formed between the suspender and the adjusting rod;
the left end of the adjusting rod is provided with a driving mechanism for driving the counterweight main body to move along the extending direction of the adjusting rod;
the lateral wall processing of counter weight main part has the mounting groove that is used for connecting the balancing weight, rings are installed at the top of counter weight main part.
Further, the driving mechanism comprises a screw rod, a groove is formed in the lower surface of the left end of the adjusting rod, the screw rod of the screw rod is positioned in the groove, a screw rod nut fixing groove is formed in the bottom of the through hole, and a screw rod nut of the screw rod is fixedly connected with the screw rod nut fixing groove; the left end of the screw rod is connected with a screw rod driving mechanism for driving the screw rod of the screw rod to rotate.
Further, the screw driving mechanism is a hand wheel connected with the screw rod of the screw rod.
Further, pulley block mounting grooves are respectively formed in the two ends of the hole top of the through hole, pulley blocks are mounted in the pulley block mounting grooves, and the pulley blocks are in rolling connection with the upper surface of the adjusting rod.
Further, the two sides of the bottom of the peripheral side wall of the counterweight main body are respectively provided with the mounting grooves, the mounting grooves are T-shaped, the horizontal sections of the mounting grooves are used for mounting the head ends of the counterweight screws, and the vertical sections of the mounting grooves are used for mounting the rod parts of the counterweight screws;
the cross-shaped groove matched with the mounting groove is formed in the peripheral side wall of the balancing weight, the horizontal section of the cross-shaped groove is used for mounting nuts matched with the counter weight screw, and the vertical section of the cross-shaped groove is used for mounting the rod portion of the counter weight screw.
Further, the suspender extends in the front-rear direction, a threaded hole is formed in the middle of the suspender, the rod portion of the suspender screw rod which is vertically arranged penetrates into the threaded hole after penetrating through the arm adjusting hole and is in threaded connection with the threaded hole, and the head of the suspender screw rod is in contact connection with the adjusting rod.
Further, a gasket is arranged between the head of the boom screw and the adjusting rod.
Compared with the prior art, the invention has the following advantages:
1. the invention fully utilizes the lever principle to eliminate the unstable factors of the crank and shaft assembly in the adjusting process before assembly, and simultaneously utilizes the principle of screw nut transmission to realize quick fine adjustment, accurately adjust the counterweight position, offset the eccentric moment of the assembly after hoisting and ensure the requirement of the axis perpendicularity.
2. The assembly adjusting device is reasonable in structure and high in applicability, assembly adjusting requirements of crankshafts of all types can be met only by manufacturing one set of tool, and large investment in production cost is avoided.
3. The method has strong operability, can rapidly and stably and accurately complete the adjustment operation before the whole assembly of the crankshaft red sleeve, effectively reduces the adjustment operation difficulty and ensures the assembly quality of the crankshaft.
Based on the reasons, the invention can be widely popularized in the fields of marine semi-combined crankshaft assembly and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a special balance adjustment device for assembling a marine crankshaft red jacket in an embodiment of the invention.
Fig. 2 is a front view of a counterweight body in accordance with an embodiment of the invention.
Fig. 3 is a side view of a counterweight body in accordance with an embodiment of the invention.
Fig. 4 is a front view of an adjusting lever according to an embodiment of the present invention.
Fig. 5 is a top view of an adjustment lever in an embodiment of the present invention.
Fig. 6 is a top view of a boom in an embodiment of the invention.
Fig. 7 is a side view of a boom in an embodiment of the invention.
Fig. 8 is a front view of a counterweight according to an embodiment of the invention.
FIG. 9 is a top view of a counterweight according to an embodiment of the invention.
Fig. 10 is a front view illustrating a structure of a special balance adjustment device for assembling a marine crankshaft red jacket according to an embodiment of the present invention in a use state.
FIG. 11 is a side view showing a structure of a balance adjusting device special for assembling a marine crankshaft red jacket in a use state in an embodiment of the invention.
In the figure: 1. a counterweight body; 101. a through hole; 102. a screw nut fixing groove; 103. pulley block mounting grooves; 104. pulley block; 105. a mounting groove; 2. an adjusting lever; 201. arm of force adjustment hole; 202. a groove; 3. screw with hand wheel; 4. balancing weight; 401. a cross-shaped groove; 5. a hanging ring; 6. a boom; 601. a threaded hole; 7. a boom screw; 8. a gasket; 9. the counterweight lifts the boom; 10. a nut; 11. a counterweight screw; 12. a crank and shaft assembly; 13. and (5) a level gauge.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be clear that the dimensions of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention: the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.
As shown in fig. 1 to 11, a special balance adjustment device for assembling a marine crankshaft red jacket comprises an adjustment rod 2 extending leftwards and rightwards, wherein a through hole 101 matched with the adjustment rod 2 is formed in the middle of a counterweight main body 1, the extending direction of the through hole 101 is parallel to the extending direction of the adjustment rod 2, the left end of the adjustment rod 2 passes through the through hole 101 and is movably connected with the counterweight main body 1, a counterweight lifting rod 9 is mounted at the right end of the adjustment rod 2, and the counterweight lifting rod 9 extends forwards and backwards;
a plurality of vertically extending force arm adjusting holes 201 are formed on the right side of the adjusting rod 2 (in this embodiment, the plurality of force arm adjusting holes 201 are equidistantly arranged), the force arm adjusting holes 201 are used for installing a boom 6, and a clamping gap for clamping the crank and shaft assembly 12 is formed between the boom 6 and the adjusting rod 2; the boom 6 extends in the front-rear direction, a threaded hole 601 is formed in the middle of the boom 6, the rod portion of the vertically arranged boom screw 7 penetrates into the threaded hole 601 after penetrating through the arm adjusting hole 201 and is in threaded connection with the threaded hole 601, and a gasket 8 is arranged between the head of the boom screw 7 and the adjusting rod 2.
The left end of the adjusting rod 2 is provided with a handwheel lead screw 3 which drives the counterweight main body to move along the extending direction of the adjusting rod; a groove 202 is formed in the lower surface of the left end of the adjusting rod 2, a screw rod with a hand wheel screw rod 3 is arranged in the groove 202, a screw rod nut fixing groove 102 is formed in the bottom of the through hole 101, and a screw rod nut with the hand wheel screw rod 3 is fixedly connected with the screw rod nut fixing groove 102; the hand wheel with the hand wheel screw rod 3 for driving the screw rod to rotate is positioned at the left side of the adjusting rod 2. Pulley block mounting grooves 103 are respectively machined at two ends of the hole top of the through hole 101, pulley blocks 104 are mounted in the pulley block mounting grooves 103, and the pulley blocks 104 are in rolling connection with the upper surface of the adjusting rod 2.
Mounting grooves 105 for connecting the balancing weights 4 are respectively formed in two sides of the bottom of the peripheral side wall of the balancing weight main body 1, the mounting grooves 105 are T-shaped, the horizontal section of each mounting groove 105 is used for mounting the head end of the corresponding balancing weight screw 11, and the vertical section of each mounting groove 105 is used for mounting the rod part of the corresponding balancing weight screw 11;
the four side walls of the balancing weight 4 are provided with cross-shaped grooves 401 matched with the mounting grooves 105, the horizontal sections of the cross-shaped grooves 401 are used for mounting nuts 10 matched with the counter weight screw rods 11, and the vertical sections of the cross-shaped grooves 401 are used for mounting rod parts of the counter weight screw rods 11. The balancing weight 4 is fixed at the bottom of the balancing weight main body 1 in a limiting way through eight balancing weight screws 11. A hanging ring 5 is arranged at the top of the counterweight main body 1.
Taking the adjustment working condition of the single-assembly of the 6S70ME-C crankshaft as an example, the crank and shaft assembly 12 is required to be adjusted to be in a balanced state before the whole assembly of the crankshaft red sleeve, and the adjustment mode is as follows:
the assembled bell crank and shaft assembly 12 is brought to the station with the assembled shaft facing downward and the unassembled side facing upward. The boom 6 is placed at the center of the bell crank inner gear hole of the bell crank and shaft combination 12 and perpendicular to the stroke direction of the bell crank. The specification and the number of the balancing weights 4 are selected according to the eccentric condition of the crank and shaft combination 12, the balancing weights are fixedly arranged with the balancing weight main body 1, and meanwhile, the arm adjusting holes used on the adjusting rod 2 are determined. The crane is hung on two ends of the lifting lug 5 and the counterweight lifting rod 9, the lifting lug and the counterweight lifting rod 9 are assembled above the crank throw and shaft combination 12, a force arm adjusting hole 201 determined on the adjusting rod 2 is aligned with a threaded hole 601 of the lifting rod 6 (the aim is to finish assembly, after the crane is loosened, the crank throw and shaft combination 12 and the balance adjusting device are in a stable state in a natural state), and the adjusting rod 2, the lifting rod 6 and the crank throw and shaft combination 12 are fixed by using a lifting rod screw rod 7 and a gasket 8. The crane hangs the two ends of the boom 6, places the level gauge 13 on the upper surface of the crank and shaft combination 12 shaft, drives the counterweight main body 1 to move left and right on the adjusting rod 2 by rotating the screw 3 with the hand wheel to finish fine adjustment. Ensuring that the axis of the crank and shaft assembly 12 is within 0.05mm/m relative to the horizontal plane. And finishing the adjustment operation and entering a state to be assembled.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (7)
1. The special balance adjusting device for assembling the marine crankshaft red sleeve is characterized by comprising an adjusting rod which extends leftwards and rightwards, wherein a through hole matched with the adjusting rod is formed in the middle of a counterweight main body, the extending direction of the through hole is parallel to that of the adjusting rod, the left end of the adjusting rod penetrates through the through hole and is movably connected with the counterweight main body, a counterweight lifting rod is arranged at the right end of the adjusting rod, and the counterweight lifting rod extends forwards and backwards;
the right side of the adjusting rod is provided with a plurality of force arm adjusting holes extending up and down, the force arm adjusting holes are used for installing a suspender, and a clamping gap for clamping a crank and shaft assembly is formed between the suspender and the adjusting rod;
the left end of the adjusting rod is provided with a driving mechanism for driving the counterweight main body to move along the extending direction of the adjusting rod;
the lateral wall processing of counter weight main part has the mounting groove that is used for connecting the balancing weight, rings are installed at the top of counter weight main part.
2. The special balance adjustment device for assembling the marine crankshaft red sleeve according to claim 1, wherein the driving mechanism comprises a screw, a groove is processed on the lower surface of the left end of the adjusting rod, the screw of the screw is positioned in the groove, a screw nut fixing groove is processed at the bottom of the through hole, and the screw nut of the screw is fixedly connected with the screw nut fixing groove; the left end of the screw rod is connected with a screw rod driving mechanism for driving the screw rod of the screw rod to rotate.
3. The balance adjustment device special for assembling the marine crankshaft red sleeve according to claim 2, wherein the screw driving mechanism is a hand wheel connected with a screw of the screw.
4. The special balance adjustment device for assembling the marine crankshaft red sleeve according to claim 1, wherein pulley block mounting grooves are respectively formed in two ends of the hole top of the through hole, pulley blocks are mounted in the pulley block mounting grooves, and the pulley blocks are in rolling connection with the upper surface of the adjustment rod.
5. The special balance adjustment device for assembling the marine crankshaft red sleeve according to claim 1, wherein the mounting grooves are respectively formed in two sides of the bottom of the peripheral side wall of the counterweight main body, the mounting grooves are T-shaped, the horizontal section of each mounting groove is used for mounting the head end of a counterweight screw, and the vertical section of each mounting groove is used for mounting the rod part of the counterweight screw;
the cross-shaped groove matched with the mounting groove is formed in the peripheral side wall of the balancing weight, the horizontal section of the cross-shaped groove is used for mounting nuts matched with the counter weight screw, and the vertical section of the cross-shaped groove is used for mounting the rod portion of the counter weight screw.
6. The special balance adjustment device for assembling the marine crankshaft red sleeve according to claim 1, wherein the hanging rod extends in the front-rear direction, a threaded hole is formed in the middle of the hanging rod, the rod portion of the hanging rod screw rod which is arranged vertically penetrates into the threaded hole after penetrating through the arm adjustment hole and is in threaded connection with the threaded hole, and the head portion of the hanging rod screw rod is in contact connection with the adjustment rod.
7. The balance adjustment device special for assembling the marine crankshaft red sleeve according to claim 6, wherein a gasket is arranged between the head of the boom screw and the adjusting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111403992.9A CN113979308B (en) | 2021-11-24 | 2021-11-24 | Special balance adjustment device for marine crankshaft red sleeve assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111403992.9A CN113979308B (en) | 2021-11-24 | 2021-11-24 | Special balance adjustment device for marine crankshaft red sleeve assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113979308A CN113979308A (en) | 2022-01-28 |
| CN113979308B true CN113979308B (en) | 2023-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111403992.9A Active CN113979308B (en) | 2021-11-24 | 2021-11-24 | Special balance adjustment device for marine crankshaft red sleeve assembly |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10250980A (en) * | 1997-03-12 | 1998-09-22 | Kurimoto Ltd | Horizontal suspension jig for assembling shaft |
| CN201971582U (en) * | 2011-03-01 | 2011-09-14 | 苏州恒鼎船舶重工有限公司 | Overhead hoist for integral heat shrinkage of crankshafts |
| CN205520301U (en) * | 2016-04-14 | 2016-08-31 | 苏州恒鼎船舶重工有限公司 | Red suit adapted control assembly of bent axle |
| CN214217938U (en) * | 2020-12-10 | 2021-09-17 | 上海船用曲轴有限公司 | Counterweight device for crankshaft sleeve |
| CN216272745U (en) * | 2021-11-24 | 2022-04-12 | 大连华锐船用曲轴有限公司 | Special balance adjusting device for assembling marine crankshaft sleeve |
-
2021
- 2021-11-24 CN CN202111403992.9A patent/CN113979308B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10250980A (en) * | 1997-03-12 | 1998-09-22 | Kurimoto Ltd | Horizontal suspension jig for assembling shaft |
| CN201971582U (en) * | 2011-03-01 | 2011-09-14 | 苏州恒鼎船舶重工有限公司 | Overhead hoist for integral heat shrinkage of crankshafts |
| CN205520301U (en) * | 2016-04-14 | 2016-08-31 | 苏州恒鼎船舶重工有限公司 | Red suit adapted control assembly of bent axle |
| CN214217938U (en) * | 2020-12-10 | 2021-09-17 | 上海船用曲轴有限公司 | Counterweight device for crankshaft sleeve |
| CN216272745U (en) * | 2021-11-24 | 2022-04-12 | 大连华锐船用曲轴有限公司 | Special balance adjusting device for assembling marine crankshaft sleeve |
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| Publication number | Publication date |
|---|---|
| CN113979308A (en) | 2022-01-28 |
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