CN111595571A - Crankshaft rotation turning gear and method for ultra-large ship - Google Patents
Crankshaft rotation turning gear and method for ultra-large ship Download PDFInfo
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- CN111595571A CN111595571A CN202010537873.1A CN202010537873A CN111595571A CN 111595571 A CN111595571 A CN 111595571A CN 202010537873 A CN202010537873 A CN 202010537873A CN 111595571 A CN111595571 A CN 111595571A
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- barring
- crankshaft
- bent axle
- stick
- rod
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- General Physics & Mathematics (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention provides a crankshaft rotation turning gear device and method for an ultra-large ship. The invention comprises the following steps: bent axle slewing mechanism and bent axle supporting mechanism, the bent axle is placed on the bent axle supporting mechanism, bent axle slewing mechanism includes hoist and barring stick, the barring stick is a plurality of, and each barring stick specification is the same, and its external diameter all matches with the terminal surface hole that bent axle thrust was served, be equipped with the stair structure that the radius is greater than barring stick main part on the barring stick, under operating condition, the barring stick inserts in the terminal surface hole that the thrust of super large-scale marine bent axle was served, the stair structure joint is to the bent axle thrust terminal surface on, hoist and mount at the both ends of barring stick. The invention meets the requirement of stable rotation of the ultra-large marine crankshaft under the condition that the grinding detection platform is required to carry out crankshaft butt joint hole processing and crankshaft integral inspection. The crankshaft machining device is reasonable in structure, low in manufacturing cost and simple in installation, saves manpower and material resources, can protect machined holes of a crankshaft from being damaged, and reduces deformation of the crankshaft.
Description
Technical Field
The invention relates to the technical field of butt joint processing and inspection of a semi-combined crankshaft for an ultra-large ship, in particular to a crankshaft rotary jigger device and method for the ultra-large ship.
Background
After the front section crankshaft and the rear section crankshaft of the ultra-large butt joint crankshaft are respectively processed on a crankshaft lathe, the front section crankshaft and the rear section crankshaft are butt-jointed together on a grinding detection platform to be used as a whole crankshaft, butt-joint holes after the front section crankshaft and the rear section crankshaft are connected together need to be processed, the butt-joint holes are distributed on the end faces of the joint flanges of the two sections of crankshafts, so that the requirement on the manufacturing precision of a single section of crankshaft is extremely high, the requirement on the precision of the butted crankshafts is very high, and the dynamic detection data after the butt joint comprises form and position tolerances such as a crank throw gear opening and closing deviation value, a main journal radial run-. The precision requirements of the deviation values of the crank gears are all required to be less than +/-0.03 mm, the main journal jumping precision requirement is less than 0.06mm, and the levelness value of the main journal is required to be less than 0.06 mm/m. In performing these dynamic verification items, it is necessary to stably rotate the entire crankshaft. In addition, when inspecting items such as the size, levelness, roughness, lapping area, appearance, and final magnetic powder of the entire crankshaft are inspected, the entire crankshaft is required to be rotated stably.
Therefore, the invention needs to invent a barring gear which can meet the requirement of stable rotation of the ultra-large marine crankshaft.
Disclosure of Invention
Aiming at the requirements that the ultra-large crankshaft needs stable rotation in the butt joint processing and detection of a polishing detection platform, the ultra-large marine crankshaft rotary jigger device and the method are provided. The principle that the turning moment effect is generated on the crankshaft by the turning gear drives the crankshaft to rotate integrally, so that the stable rotation of the ultra-large crankshaft on the grinding detection platform is realized. The technical means adopted by the invention are as follows:
the utility model provides a super large-scale marine bent axle rotation barring device, includes bent axle slewing mechanism and bent axle supporting mechanism, and the bent axle is placed on the bent axle supporting mechanism, bent axle slewing mechanism includes hoist and barring stick, the barring stick is a plurality of, and each barring stick specification is the same, and its external diameter all matches with the terminal surface hole on the bent axle thrust end, be equipped with the stair structure that the radius is greater than barring stick main part on the barring stick, under operating condition, the barring stick inserts the terminal surface hole on super large-scale marine bent axle's thrust end, on the stair structure joint was served at the bent axle thrust terminal surface, the hoist and mount hoist is at the both ends of barring stick.
Further, the barring stick includes barring stick mandrel and barring stick nylon cover, the external diameter of barring stick nylon cover main part matches with the terminal surface hole on the bent axle thrust end, and outside stair structure is seted up to its outside, and inside stair structure is seted up to the barring stick nylon cover inner wall of this outside stair structure side, barring stick mandrel has reducing structure, and under the operating condition, barring stick mandrel passes through this reducing structure joint on the inside stair structure of barring stick nylon cover.
Further, the angle of the stepped surface of the reducing structure is 15-25 degrees.
Further, bent axle supporting mechanism is V type support, V type support includes V type supporting part and supporting mechanism base, the external diameter of bent axle is matchd to the opening of V type supporting part.
The invention has the following advantages:
1. the invention has reasonable structure, low manufacturing cost and simple installation, saves manpower and material resources, can protect the processed hole of the crankshaft from being damaged by the nylon sleeve of the turning rod, reduces the deformation of the crankshaft and is convenient for accurately detecting the dynamic data of the crankshaft.
2. The reducing structure joint of barring stick mandrel can prevent that the barring stick mandrel from moving in the barring stick nylon cover on the hole ladder face of barring stick nylon cover, also can avoid the destruction that the rigidity extrusion that the terminal surface hole direct contact of barring stick mandrel and crankshaft thrust end produced the terminal surface hole surface production of having processed simultaneously.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the structure of the present invention.
Fig. 2 is a front view of a nylon sleeve for a barring rod in accordance with the present invention.
FIG. 3 is a front view of the barring rod mandrel of the present invention.
Fig. 4 is a diagram of the working condition of the present invention, wherein (a) is a front view and (b) is a side view.
In the figure: 1. a spreader; 2. a turning rod nylon sleeve; 21. a barring rod nylon sleeve main body portion; 22. the outside of the nylon sleeve of the turning rod is of a stepped structure; 3. a turning bar spindle; 31. the front end of the turning rod mandrel; 32. the turning rod mandrel is of a reducing structure; 33. turning the rear end of the rod mandrel; 4. and a V-shaped bracket.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment discloses a super-large marine bent axle rotation barring device, including bent axle slewing mechanism and bent axle supporting mechanism, the bent axle is placed on the bent axle supporting mechanism, bent axle slewing mechanism includes hoist and barring stick, the barring stick is a plurality of, and each barring stick specification is the same, and its external diameter all matches with the terminal surface hole on the bent axle thrust end, be equipped with the stair structure that the radius is greater than barring stick main part on the barring stick, under operating condition, the barring stick inserts the terminal surface hole on super-large marine bent axle thrust end, the stair structure joint is to on the bent axle thrust terminal surface, and hoist 1 hoists at the both ends of barring stick, and the hoist includes crane lifting hook and suspender.
As shown in fig. 1 to 3, as the preferred embodiment, the barring stick includes a barring stick mandrel 3 and a barring stick nylon sleeve 2, the outer diameter of the barring stick nylon sleeve main body portion 21 matches with the end face hole on the crankshaft thrust end, an external stepped structure 22 is provided outside the outer diameter, an internal stepped structure is provided on the inner wall of the barring stick nylon sleeve on the external stepped structure side, the barring stick mandrel has a diameter-variable structure, and in the operating state, the barring stick mandrel passes through the barring stick nylon sleeve and is connected to the internal stepped structure of the barring stick nylon sleeve through the diameter-variable structure. The angle of the stepped surface of the reducing structure is 15-25 degrees, and in the embodiment, the angle is 20 degrees. The outer diameter of the front end 31 of the turning rod mandrel is matched with the inner diameter of the main body part 21 of the turning rod nylon sleeve, and the outer diameter of the rear end 33 of the turning rod mandrel is larger than the outer diameter of the front end 31 of the turning rod mandrel after the diameter-changing structure.
The bent axle supporting mechanism is V type support 4, V type support includes V type supporting part and supporting mechanism base, the main journal of bent axle is matchd to the opening of V type supporting part.
As shown in figure 4, according to the specification difference of bent axle, set up 4 ~ 13 supporting seats, 4 are shown in the figure, and both ends are equipped with the arch under the V type frame, and it is used for letting supporting seat and platform area of contact bigger, and the focus is more steady. The specific use method of the invention is as follows: before the crankshaft for the ultra-large ship is rotated, a barring device consisting of a barring rod nylon sleeve 2 and a barring rod mandrel 3 is inserted into an end face hole on the thrust end of the crankshaft for the ultra-large ship, 5 barring devices are installed by the method, A, B, C, D, E forms a minor arc, one end of a hanging strip is sleeved on the left side of the barring device A, the hanging strip is wound on the B, C, D, E4 barring device from the outer side of the barring device, the other end of the hanging strip is sleeved on the right side of the barring device A, the hanging strip is also wound on the B, C, D, E4 barring device from the outer side of the barring device to form a closed loop, the middle part of the hanging strip is hooked by a hanging hook of the crane, the hanging strip is lifted upwards to be tensioned by a crane hook, and the hanging strip generates a rotating torque on a set of barring devices of A, B, C, D, E to enable the crankshaft on the V-shaped support to rotate.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. The utility model provides a super large-scale marine bent axle rotation barring device, its characterized in that, includes bent axle slewing mechanism and bent axle supporting mechanism, the bent axle is placed on the bent axle supporting mechanism, bent axle slewing mechanism includes hoist and barring stick, the barring stick is a plurality of, and each barring stick specification is the same, and its external diameter all matches with the terminal surface hole on the bent axle thrust end, be equipped with the stair structure that the radius is greater than barring stick main part on the barring stick, under operating condition, the barring stick inserts the terminal surface hole on the thrust end of super large-scale marine bent axle, the stair structure joint is to on the bent axle thrust terminal surface, and the hoist is at the both ends of barring stick.
2. The crankshaft rotary jigger device for the ultra-large ship according to claim 1, wherein the jigger rod comprises a jigger rod mandrel and a jigger rod nylon sleeve, the outer diameter of the main body part of the jigger rod nylon sleeve is matched with an end surface hole on the thrust end of the crankshaft, an external stepped structure is arranged on the outer side of the main body part of the jigger rod nylon sleeve, an internal stepped structure is arranged on the inner wall of the jigger rod nylon sleeve on the external stepped structure side, the jigger rod mandrel has a diameter-variable structure, and the jigger rod mandrel is clamped on the internal stepped structure of the jigger rod nylon sleeve through the diameter-variable structure in an operating state.
3. The crankshaft rotary jigger device for ultra-large ships according to claim 2, wherein the angle of the stepped surface of the reducing structure is 15 to 25 °.
4. The crankshaft rotary jigger device for very large vessels according to claim 1, wherein the crankshaft support mechanism is a V-shaped bracket, the V-shaped bracket comprising a V-shaped support portion and a support mechanism base, the opening of the V-shaped support portion matching the main journal of the crankshaft.
5. A use method of the crankshaft rotary jigger device for the ultra-large ship according to any one of claims 1 to 4, comprising the following steps:
the turning rod mandrel is inserted into the turning rod nylon sleeve to form a turning rod mechanism;
placing a crankshaft to be turned on a supporting mechanism;
inserting the turning rod mechanisms into end face holes on the thrust end of the ultra-large marine crankshaft and into end face holes on the thrust end of the ultra-large marine crankshaft, and installing a plurality of sets of turning rod mechanisms into corresponding end face holes by using the method, wherein the connecting line of each section hole is a minor arc;
sleeving one end of a hanging strip on the left side of the first barring rod mechanism, winding the hanging strip on other barring rod mechanisms from the outer side of the barring rod mechanism, sleeving the other end of the hanging strip on the right side of the first barring rod mechanism, and winding the hanging strip on the other barring rod mechanisms from the outer side of the barring rod mechanism;
the middle part of the hanging strip is hooked by a crane hook, the crane hook is lifted upwards to tighten the hanging strip, and a crankshaft on the supporting mechanism rotates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010537873.1A CN111595571B (en) | 2020-06-12 | 2020-06-12 | Ultra-large marine crankshaft rotary jigger device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010537873.1A CN111595571B (en) | 2020-06-12 | 2020-06-12 | Ultra-large marine crankshaft rotary jigger device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111595571A true CN111595571A (en) | 2020-08-28 |
| CN111595571B CN111595571B (en) | 2023-07-14 |
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| CN202010537873.1A Active CN111595571B (en) | 2020-06-12 | 2020-06-12 | Ultra-large marine crankshaft rotary jigger device and method |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0786208A1 (en) * | 1996-01-23 | 1997-07-30 | Systemate Holland B.V. | Rotary shackle with yieldable lock |
| JP2006044807A (en) * | 2004-07-30 | 2006-02-16 | Sumitomo Heavy Industries Engineering-Service Co Ltd | Lifting magnet type suspender and carrying crane |
| CN101571072A (en) * | 2009-03-24 | 2009-11-04 | 南车戚墅堰机车有限公司 | Turning gear for diesel |
| CN202596891U (en) * | 2012-03-23 | 2012-12-12 | 宝山钢铁股份有限公司 | Safety protecting device of pneumatic diesel engine |
| CN206530449U (en) * | 2017-03-10 | 2017-09-29 | 北京金风科创风电设备有限公司 | Barring gear for generator |
| CN206886583U (en) * | 2017-05-09 | 2018-01-16 | 大唐（云南）水电联合开发有限责任公司 | Steel wire rope barring gear is matched somebody with somebody in a kind of power station turbine-generator units driving |
| CN208603005U (en) * | 2018-07-09 | 2019-03-15 | 江苏金风科技有限公司 | Barring gear bracket |
| CN212110559U (en) * | 2020-06-12 | 2020-12-08 | 大连华锐船用曲轴有限公司 | Ultra-large type marine crankshaft rotating disc vehicle device |
-
2020
- 2020-06-12 CN CN202010537873.1A patent/CN111595571B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0786208A1 (en) * | 1996-01-23 | 1997-07-30 | Systemate Holland B.V. | Rotary shackle with yieldable lock |
| JP2006044807A (en) * | 2004-07-30 | 2006-02-16 | Sumitomo Heavy Industries Engineering-Service Co Ltd | Lifting magnet type suspender and carrying crane |
| CN101571072A (en) * | 2009-03-24 | 2009-11-04 | 南车戚墅堰机车有限公司 | Turning gear for diesel |
| CN202596891U (en) * | 2012-03-23 | 2012-12-12 | 宝山钢铁股份有限公司 | Safety protecting device of pneumatic diesel engine |
| CN206530449U (en) * | 2017-03-10 | 2017-09-29 | 北京金风科创风电设备有限公司 | Barring gear for generator |
| CN206886583U (en) * | 2017-05-09 | 2018-01-16 | 大唐（云南）水电联合开发有限责任公司 | Steel wire rope barring gear is matched somebody with somebody in a kind of power station turbine-generator units driving |
| CN208603005U (en) * | 2018-07-09 | 2019-03-15 | 江苏金风科技有限公司 | Barring gear bracket |
| CN212110559U (en) * | 2020-06-12 | 2020-12-08 | 大连华锐船用曲轴有限公司 | Ultra-large type marine crankshaft rotating disc vehicle device |
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| CN111595571B (en) | 2023-07-14 |
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