KR20240045727A - Nut assembly for ship - Google Patents

Abstract

The large nut assembly for ships of the present invention is provided on a shaft mooring or propeller of a ship, and includes a nut in which a first hole forming a plurality of spanner operations or tap holes is formed along a circumferential surface, the nut, and It includes a fixing part that is detachable from the first ball and coupled to the nut, and a belt is connected to the fixing part so that the nut is lifted by a lifting device. When lifting is completed, the fixing part can be separated from the nut. The present invention can safely lift a nut provided on a shaft mooring or propeller.

Description

Large nut assembly for ship {Nut assembly for ship}

The present invention relates to large nut assemblies for ships.

Ships are built by assembling multiple structures made in blocks at different yards or docks. If the structure is manufactured by dividing it into blocks, the work of installing various facilities, pipes, and parts can be easily performed. In other words, the structure is properly aligned through a turnover operation that flips the structure from a regular state to an irregular state or from an irregular state to a regular state, and workers can enter the aligned structure and work conveniently and efficiently. will be.

Here, the propeller, shaft, and rudder must be installed at the bottom of the stern, so the installation work is more difficult than other structures. In general, after attaching a plurality of wire ropes or sling belts to the nuts of the propeller and shaft moorings arranged in the horizontal direction, the nuts of the propeller and shaft moorings are lifted using a crane and placed on the lower part of the stern. Install.

On the other hand, if a sling belt is wound around the inner diameter of the nut to connect the nut to the lifting device, the sling belt may be damaged or cut by the threads of the nut, which may lead to a safety accident, so improvement is needed.

The problem to be solved by the present invention is to provide a large nut assembly for ships that can safely lift a nut provided on a shaft mooring or propeller.

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

One aspect of the large nut assembly for ships of the present invention for achieving the above problem is provided on the shaft mooring or propeller of the ship, and a nut in which a first ball forming a plurality of spanner operations or tap holes is formed along the circumferential surface. A large nut assembly for a ship, comprising: a nut and a fixing part that is detachable from the first ball and coupled to the nut; a belt is connected to the fixing part so that the nut is lifted by a lifting device; Once completed, the fixture can be separated from the nut.

The first ball is made for spanner work, and a pair of the fixing parts are coupled to the nut at symmetrical positions among the plurality of first balls, and the fixing parts include a coupling member inserted into the first ball, the It may include an extension member extending from the coupling member to which the belt is connected, and a jaw member provided at an end of the extension member and forming a jaw to prevent the belt from coming off.

The fixing part is provided between the coupling member and the extension member, has a diameter larger than the coupling member and the jaw member so that the contact surface with the nut is expanded, and a first rubber plate is provided on the contact surface with the nut. It may further include an expansion member.

The first ball forms a tap hole provided to be spaced apart from the space where the hydraulic cylinder is fastened, and is eccentric to one side in the thickness direction of the nut, and the fixing part is coupled to any one of the plurality of first holes, The fixing part includes a coupling member coupled to the first ball, a base member on which the coupling member is provided, and a ring member provided on an opposite side of the base member to the coupling member and provided on the same center line as the center line of the nut. It can be included.

The base member is inclined on both sides from the center toward the end so that a plurality of tangent lines abutting the circumference of the nut are formed. The center of the base member is fixed to the nut by the coupling member, and the center of the base member is fixed to the nut by the coupling member. It may be in tangential contact with the circumference of the nut at a point away from the nut.

Specific details of other embodiments are included in the detailed description and drawings.

The large nut assembly for ships according to the present invention makes it easy to lift the nut, and prevents the risk of damage or cutting of the belt, thereby preventing safety accidents.

Figure 1 is a perspective view showing a large nut assembly for ships according to a first embodiment of the present invention.
Figure 2 is a perspective view showing the fixing part of the large nut assembly for ships according to the first embodiment of the present invention.
Figure 3 is a view showing the fixing part of the large nut assembly for ships according to the second embodiment of the present invention as seen from the first direction.
Figure 4 is a view showing the fixing part of the large nut assembly for ships according to the second embodiment of the present invention as seen from a second direction.
Figure 5 is a diagram for explaining a tangent line supported by a nut.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various different forms. The present embodiments are merely intended to ensure that the disclosure of the present invention is complete and to provide common knowledge in the technical field to which the present invention pertains. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description with reference to the accompanying drawings, identical or corresponding components will be assigned the same reference numbers regardless of the reference numerals, and overlapping elements will be assigned the same reference numbers. The explanation will be omitted.

Figure 1 is a perspective view showing a large nut assembly for a ship according to a first embodiment of the present invention, and Figure 2 is a perspective view showing a fixing part of a large nut assembly for a ship according to a first embodiment of the present invention.

Referring to FIGS. 1 and 2 , the large nut assembly 100 for ships according to the first embodiment of the present invention may include a nut 110 and a fixing portion 120.

The nut 110 is a component that secures the ship's shaft mooring (propeller shaft and rudder stock, etc.), propeller or rudder, and is provided on the ship's shaft mooring, propeller or rudder and is large (for example, the diameter of the nut 110 is 1.5 m and may weigh 4 tons). The large nut 110 provided on the shaft mooring or propeller is not easy to handle or move due to its load, as it is impossible to directly lift or transport the nut 110 even if 2 to 3 workers work on it. not. Accordingly, lifting is required using a separate lifting device such as a crane.

In order for the nut 110 to be lifted by the lifting device, the nut 110 first needs to be connected to the lifting device. However, since the nut 110 provided on the shaft mooring or propeller has an annular shape, a medium for connecting the lifting device is required. For this purpose, the nut 110 has a fixing portion 120 that can be detached. When the fixing part 120 is coupled to the nut 110, a belt BT is connected to the fixing part 120 and the nut 110 is connected to a crane, which is a lifting device, and is lifted. When the lifting is completed, the fixing part 120 ) can be separated from the nut 110.

And hereinafter, the nut 110 will be described by providing an example of being provided on the shaft mooring.

The nut 110 provided on the shaft mooring may have an oil groove formed along the circumferential surface, and a plurality of first holes 111 for spanner work may be formed along the circumferential surface spaced apart from the oil groove. The first hole 111 is provided to fasten the nut 110 to the propeller shaft (not shown), and since this replaces the known technology, detailed description will be omitted.

That is, the fixing part 120 of the present embodiment can be coupled to a spanner working hole provided to install the nut 110 to the shaft mooring without the need to add hole processing to the nut 110. Accordingly, safe lifting of the nut 110 is possible only by adding the fixing part 120.

The fixing part 120 may be attached to or detached from the first ball 111 used for spanner work and coupled to the nut 110. The nut 110 of this embodiment may be coupled to both sides of the nut 110 to enable horizontal movement. For example, a pair of fixing parts 120 may be coupled to the nut 110 at symmetrical positions among the plurality of first balls 111.

And the fixing part 120 may include a coupling member 121, a first expansion member 122, an extension member 123, and a jaw member 124.

The coupling member 121 may be inserted into the first hole 111 and may have the same diameter as the first hole 111 for fitting. As an example, the coupling member 121 may be coupled to the first hole 111 through an interference fit, and in this case, the fixing part 120 may be made of a material that can be heat treated.

The first expansion member 122 is a configuration that forms a jaw so that the belt BT is fixed to the extension member 123 between the jaw member 124 and may be provided at the end of the coupling member 121 and includes a coupling member ( 121) can be formed larger than the diameter.

In addition, the first expansion member 122 is. The diameter is formed to be larger than that of the coupling member 121 and the jaw member 124 so that the contact surface with the nut 110 is expanded between the coupling member 121 and the extension member 123, so that the nut 110 and the first expansion member ( 122) Damage caused by contact can be minimized. In addition, although not shown in the drawings, various modifications are possible, such as a rubber plate may be provided between the coupling member 121 and the first expansion member 122, that is, on the contact surface with the nut 110. However, the nut 110 is large, such as 1.5 m, so the contact surface is wide, so the risk of scratches can be low, and the fixing part 120 is processed smoothly so that there is no tearing when contacting the belt, so the rubber plate may be omitted.

The extension member 123 is a component to which the belt BT is connected, and may extend from the coupling member 121. For example, the extension member 123 may be provided on the opposite side of the coupling member 121 in the first expansion member 122. , the belt BT may be connected with a diameter smaller than the diameter of the first expansion member 122.

The jaw member 124 may be provided at an end of the extension member 123 and may form a jaw to prevent the belt BT from being separated. like this,

The coupling member 121, the first expansion member 122, the extension member 123, and the jaw member 124 are provided in a row, and the belt BT is fastened to the extension member 123 to lift the nut 110. You can connect to the device.

In this embodiment, it has been explained that the nut 110 is provided on the shaft mooring. Below, what is provided on the propeller (not shown) will be described with reference to the drawings.

Hereinafter, a modified example of this embodiment will be described with reference to FIGS. 3 and 4, and overlapping descriptions of the same configuration performing the same function will be omitted.

Figure 3 is a view showing the fixing part of the large nut assembly for ships according to a second embodiment of the present invention as seen from the first direction, and Figure 4 is a view showing the high position of the large nut assembly for ships according to the second embodiment of the present invention. This is a drawing showing the government as seen from the second direction. In addition, Figure 5 is a diagram for explaining the tangent line supported by the nut. With reference to FIGS. 3 and 4 , differences from those described using FIGS. 1 and 2 will be mainly explained.

Referring to FIGS. 3 and 4 , the large nut assembly 100 for ships according to the second embodiment of the present invention may include the nut 110 and the fixing portion 120A in the same manner as the first embodiment.

However, this embodiment differs in that the nut 110 is provided on the propeller and the structure of the fixing part 120A is different.

The nut 110 provided on the propeller may have a first ball 111 formed similarly to the first embodiment. However, the first hole 111 may form a tap hole provided to be spaced apart from the space where the hydraulic cylinder is fastened. In other words, it is difficult to make additional holes in the nut 110 provided on the propeller due to the space for fastening the hydraulic cylinder. In this embodiment, the fixing part 120A is connected to the first hole 111 forming a tap hole provided in the nut 110 without additionally machining the hole. Since the tap hole is a known technology, detailed descriptions will be omitted.

However, it should be noted that the tap hole is spaced apart from the space for fastening the hydraulic cylinder and is eccentric to one side in the thickness direction of the nut 110.

And the nut 110 of this embodiment may have one fixing part 120A coupled to any one of the plurality of first holes 111 of the nut 110 so that it can move vertically. However, the number of combinations of the fixing part 120A may be changed depending on the operator's selection.

The fixing part 120A may include a coupling member 121A, a base member 125A, and a ring member 126A.

The coupling member 121A may be coupled to the first hole 111. The coupling member 121A may be made of a bolt, for example, and the nut 110 and the base member 125A can be coupled using a general bolt fastening method.

The base member 125A may be provided with a coupling member 121A and a ring member 126A, and may be in contact with the nut 110. For example, the base member 125A may be inclined on both sides from the center toward the ends so that a plurality of tangent lines contacting the circumference of the nut 110 are formed. Accordingly, it may be in tangential contact with the circumference of the nut 110 at a point spaced apart from the center of the base member 125A.

That is, as referring to FIG. 5, when a square (see '2' mark) touches a circle (see '1' mark) like the nut 110, only one tangent line (see 'A' in FIG. 5) is formed. do. And since the diameter of the nut 110 may vary depending on the type and size of the propeller, etc., if the contact surface of the base member 125A is curved to fit one nut 110, other types of nuts 110 will not be in contact. This may be difficult or the nut 110 may be damaged.

However, in this embodiment, as shown in FIG. 3, the contact surface has an inclined surface and can be contacted at two points (see 'B'). In addition, the center of the base member 125A may be fixed to the nut 110 by the coupling member 121A to form a support point.

Therefore, even if the nut 110 is lifted using one fixing part 120A and one ring member 126A, the base member 125A is formed with support points at multiple points, so that the base member 125A is the nut ( 110), spinning can be prevented, and stable bonding is possible.

The ring member 126A is provided on the opposite side of the coupling member 121A from the base member 125A, and may be provided on the same center line as the center line of the nut 110 to prevent an uneven load from occurring. For example, the ring member 126A may be made of an eye bolt so that a belt can be connected.

The large nut assembly 100 for ships according to this embodiment makes it easy to lift the nut 110, and prevents the risk of damage or cutting of the belt BT, thereby preventing safety accidents.

Although embodiments of the present invention have been described with reference to the above and the attached drawings, those skilled in the art will understand that the present invention can be implemented in other specific forms without changing the technical idea or essential features. You will understand that it exists. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive.

100: large nut assembly 110: nut
120: fixing part

Claims (5)

In the large nut assembly for ships, which is provided on the shaft mooring or propeller of a ship and includes a nut on which a first ball forming a plurality of spanner operations or tap holes is formed along the circumferential surface,
the nut; and
Including a fixing part that is attached to and detachable from the first ball and coupled to the nut,
A belt is connected to the fixing part so that the nut is lifted by a lifting device, and when lifting is completed, the fixing part is separated from the nut. According to paragraph 1,
The first ball is made for spanner work,
A pair of the fixing parts are coupled to the nut at symmetrical positions among the plurality of first balls,
The fixing part,
A coupling member inserted into the first hole;
an extension member extending from the coupling member and connected to the belt; and
A large nut assembly for ships, including a jaw member provided at an end of the extension member and forming a jaw to prevent separation of the belt. According to paragraph 2,
The fixing part,
A first expansion member is provided between the coupling member and the extension member, has a larger diameter than the coupling member and the jaw member so that the contact surface with the nut is expanded, and has a rubber plate on the contact surface with the nut. A large nut assembly for marine use, including: According to paragraph 1,
The first hole forms a tap hole provided to be spaced apart from the space where the hydraulic cylinder is fastened, and is eccentric to one side in the thickness direction of the nut,
The fixing part is coupled to any one of the plurality of first balls,
The fixing part,
A coupling member coupled to the first ball;
a base member on which the coupling member is provided; and
A large nut assembly for ships, including a ring member provided on an opposite side of the coupling member in the base member and provided on the same center line as the center line of the nut. According to clause 4,
The base member is,
Inclined on both sides from the center toward the ends so that a plurality of tangent lines contacting the circumference of the nut are formed,
A large nut assembly for ships, wherein the center of the base member is fixed to the nut by the coupling member, and tangentially abuts the circumference of the nut at a point spaced apart from the center of the base member.

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