A shaft feeding tool and method for shafting used in shipbuilding

Abstract

The present invention provides a shaft advancement tool and method for a shaft system for shipbuilding, the shaft advancement tool comprising a base, at least two support columns arranged on the base, a hanging weight rod supported on the support columns, and a connecting portion; the base comprises a plurality of bottom units, each of which has at least one four-joint splicing interface on both sides of the bottom unit, and two adjacent bottom units are detachably connected; the support column comprises a plurality of support units, each of which has at least one four-joint splicing interface on both sides of the support unit; the base and the support columns, adjacent support units, and the support columns and the hanging weight rod are all connected through the connecting portion; the shaft advancement tool has simple splicing operation and is convenient for splicing at a predetermined position; the height of the support column is controllable, the hanging weight rod can be fixed at a predetermined height, welding and cutting on the hull outer plate can be avoided, and shaft advancement time can be saved.

Description

Technical Field

[0001] The present invention relates to the field of shipbuilding, and in particular to a shaft advancement tool and method for a shaft system used in shipbuilding. Background Art

[0002] Most ship shafting installations use hoists, which alternately connect and pull different hoists to gradually advance the tail shaft or propeller shaft. This requires numerous hoists, requiring extensive calculations, analysis, and drafting in the initial design phase, and extensive welding, cutting, and grinding of the hoists later on. Welding also impacts the lifespan of the hull plating, and the welding process can easily cause stress and deformation. While some stern platforms can deliver shaft sections to a specific position, without hoists, precise delivery is often impossible. Summary of the Invention

[0003] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a shaft advancement tool and method for a shaft system for shipbuilding.

[0004] The present invention provides a shaft feed tool for a shaft system for shipbuilding, comprising a base, at least two support columns arranged on the base, a hanging rod supported on the support columns, and a connecting portion; the base comprises a plurality of bottom units, each of which has at least one four-joint splicing interface on both sides of the bottom unit, and two adjacent bottom units are detachably connected; the support column comprises a plurality of support units, each of which has at least one four-joint splicing interface on both sides of the support unit; the base and the support column, the adjacent support units, and the support column and the hanging rod are all connected via the connecting portion.

[0005] Preferably, the coupling portion includes a protrusion and a groove.

[0006] Preferably, the top ends of the support unit and the bottom unit are both provided with protrusions; and the two ends of the hanging code rod and the bottom end of the support unit are both provided with grooves.

[0007] The present invention also provides a method for advancing a shaft system for shipbuilding, which uses the above-mentioned shaft advancement tooling and includes the following steps:

[0008] Determine the installation position of the shaft to be installed on the ship;

[0009] On the stern platform, a plurality of shaft feed fixtures are sequentially set up along the bow and stern direction toward the position to be installed; a predetermined height of the support column is determined according to the distance between the stern platform and the corresponding outer plate, and the support units and the number of splicing units are adjusted according to the predetermined height;

[0010] Hanging weights on the lifting weight rods of the plurality of shaft feed fixtures, and lifting the shafts to be installed by installing a hoist on the lifting weights;

[0011] The hoist is pulled to gradually transport the shaft to be installed toward the location to be installed.

[0012] As described above, the present invention relates to a shaft advancement tooling for a shaft system for shipbuilding. The shaft advancement tooling has simple splicing operations and is convenient for splicing at a predetermined position. The height of the support column is controllable, and the hanging code rod can be fixed at a predetermined height, which can avoid welding and cutting on the outer plate of the hull, saving shaft advancement time. The shaft advancement method using the shaft advancement tooling saves the time for welding and cutting the outer plate hanging code, extends the service life of the hull outer plate, and ensures the smooth advancement of the shaft advancement. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The figure is a schematic diagram of the bottom unit of a shaft feed fixture for a shaft system used in shipbuilding according to the present invention.

[0014] Figure 2 This is another schematic diagram of the bottom unit of a shaft feed fixture for a shaft system for shipbuilding according to the present invention.

[0015] Figure 3 The figure is a schematic diagram of the base of a shaft feed fixture for a shaft system used in shipbuilding according to the present invention.

[0016] Figure 4 The figure is a schematic diagram of a support unit of a shaft feed fixture for a shaft system used in shipbuilding according to the present invention.

[0017] Figure 5 The figure is a schematic diagram of a support column of a shaft feed fixture for a shaft system used in shipbuilding according to the present invention.

[0018] Figure 6 The figure is a schematic diagram of a shaft feed fixture for a shaft system used in shipbuilding according to the present invention.

[0019] Figure 7 The figure is a schematic diagram of a shafting method for shipbuilding according to the present invention.

[0020] Description of reference numerals:

[0021] 100, base; 110, bottom unit; 200, support column; 210, support unit; 300, lifting rod; 310, lifting weight; 400, protrusion; 410, groove; 420, four-piece joint; 421, wire rope; 422, ground fixing ring; 500, outer plate; 600, lifting strap; 610, shaft advance trolley; 620, shaft to be installed. DETAILED DESCRIPTION

[0022] The following describes the implementation of the present invention through specific embodiments. People skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0023] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for understanding and reading by those familiar with this technology, and are not used to limit the conditions for implementation of the present invention. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", etc. quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0024] like Figure 1-7 As shown, the present invention proposes an embodiment of a shaft feed tooling for a shaft system for shipbuilding, comprising a base 100, at least two support columns 200 arranged on the base 100, a hanging rod 300 supported on the support column 200, and a connecting portion; the base 100 includes a plurality of bottom units 110, each of which has at least one quadruple splicing interface 420 on both sides of the bottom unit 110, and two adjacent bottom units 110 are detachably connected; the support column 200 includes a plurality of support units 210, each of which has at least one quadruple splicing interface 420 on both sides of the support unit 210; the base 100 and the support column 200, adjacent support units 210, and the support column 200 and the hanging rod 300 are all connected via a connecting portion.

[0025] When it is necessary to build a shaft feed fixture at a predetermined position on the stern platform, first set a ground fixing ring 422 on the stern platform, and form a base 100 by splicing the bottom units 110 at a predetermined position. Then, according to the predetermined height required for the hanging rod 300, build a number of support units 210 from bottom to top on the base 100. After the base 100 and the support column 200 are built, the four-joint joints 420 on both sides of the bottom unit 110, the four-joint joints 420 on both sides of the support unit 210, and the ground fixing ring 422 are connected by steel ropes to fix the support column 200 and the base 100 on the stern platform and ensure the strength of the entire shaft system shaft feed fixture. The shaft feed fixture is simple to splice and convenient to splice at a predetermined position. The height of the support column 200 is controllable, and the hanging rod 300 can be fixed at a predetermined height, which can avoid welding and cutting on the hull outer plate and save shaft feed time.

[0026] Preferably, the coupling portion includes a protrusion 400 and a groove 410. Specifically, the tops of the support unit 210 and the bottom unit 110 are both provided with protrusions 400; and the ends of the hanging rod and the bottom of the support unit 210 are both provided with grooves 410. The use of protrusions 400 and grooves 410 makes the coupling portion simple and easy to manufacture.

[0027] For convenient connection, two adjacent bottom units 110 are connected via bolt holes.

[0028] Correspondingly, an embodiment of a method for advancing a shaft system for ship construction adopts the above-mentioned shaft advancement tooling, and includes the following steps: S1, determining the installation position of the shaft to be installed on the ship; S2, sequentially erecting a plurality of shaft advancement toolings along the bow and stern direction toward the position to be installed on the stern platform; determining the predetermined height of the support column 200 of each shaft advancement tooling according to the distance of the stern platform from the corresponding outer plate 500, and adjusting the support unit 210 and the number of splicing according to the predetermined height; S3, hanging a lifting code 310 on the lifting code rods 300 of the plurality of shaft advancement toolings, and lifting the shaft to be installed by installing a hoist on the lifting code 310; S4, pulling the hoist to gradually transport the shaft to be installed 620 toward the position to be installed.

[0029] Specifically, after each shaft advancement tooling is installed, the shaft to be installed is first transported along the bow and stern of the ship using the shaft advancement trolley 610 to a position where the trolley 610 cannot advance. The hoist's pull margin is then adjusted, and a sling 600 is provided on the hoist for placing the shaft to be installed. The hoist is then pulled to gradually transport the shaft to the hull's installation fixture. This shaft advancement method reduces the time required for welding and cutting the outer plating lifting brackets 310, extends the service life of the hull's outer plating, and ensures smooth shaft advancement.

[0030] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A shaft feed fixture for a shipbuilding shaft system, characterized in that: The invention comprises a base (100), at least two support columns (200) arranged on the base (100), a hanging code rod (300) supported on the support columns (200), and a connecting portion; the base (100) comprises a plurality of bottom units (110), at least one quadruple joint interface (420) is provided on both sides of each bottom unit (110), and two adjacent bottom units (110) are detachably connected; the support column (200) comprises a plurality of support units (210), at least one quadruple joint interface (420) is provided on both sides of each support unit (210); the base (100) and the support column (200), adjacent support units (210), and the support column (200) and the hanging code rod (300) are all connected via the connecting portion.

2. The shaft feeding fixture for a shipbuilding shaft system according to claim 1, characterized in that: The coupling portion includes a protrusion (400) and a groove (410).

3. The shaft feeding fixture for a shipbuilding shaft system according to claim 2, characterized in that: The top ends of the support unit (210) and the bottom unit (110) are both provided with protrusions (400); and the two ends of the hanging code rod (300) and the bottom end of the support unit (210) are both provided with grooves (410).

4. A method for advancing a shaft system for shipbuilding, using the shaft advancement tooling according to any one of claims 1 to 3, comprising the following steps: Determine the installation position of the shaft to be installed on the ship; On the stern platform, several shaft feed fixtures are sequentially set up along the bow and stern directions toward the position to be installed; wherein, Determining the predetermined height of each of the shaft feed fixture support columns (200) based on the distance between the stern platform and the corresponding outer plate (500), and adjusting the number of the support units (210) to be spliced based on the predetermined height; Hanging a hanging code (310) on the hanging code rod (300) of each of the plurality of shaft feed fixtures, and then lifting the shaft to be installed by installing a plurality of hoists on the hanging code (310); The hoist is pulled to gradually transport the shaft to be installed toward the location to be installed.

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