阅读说明：本技术 一种舵叶的制造安装方法 (Manufacturing and mounting method of rudder blade ) 是由 陈洁礼 朱成平 于 2020-07-23 设计创作，主要内容包括：本发明涉及船舶领域,公开了一种舵叶的制造安装方法,包括以下步骤：选择舵型、确定舵叶尺寸缩放表、确定实际舵叶尺寸表、制造舵叶和安装舵叶。其中,确定舵叶尺寸缩放表步骤中包括获得各点位的相对长度值x/b以及各点位的相对半宽值y/b以构成舵叶尺寸缩放表；确定实际舵叶尺寸表步骤中包括将舵叶长度B分别与舵叶尺寸缩放表中的各点位的相对长度值x/b及相对半宽值y/b相乘,以获得各点位的实际点位舵长值x’以及实际舵叶半宽值y’并构成实际舵叶尺寸表。本发明的舵叶的制造安装方法能够根据舵叶尺寸缩放表获得不同舵叶长度B的舵叶的实际舵叶尺寸表,其适用于制造具有相同舵型但尺寸大小不同的舵叶,以简化船舶的制造工艺,提高生产效率。(The invention relates to the field of ships, and discloses a method for manufacturing and installing rudder blades, which comprises the following steps: selecting a rudder type, determining a rudder blade size scaling table, determining an actual rudder blade size table, manufacturing a rudder blade and installing the rudder blade. The step of determining the rudder blade size scaling table comprises the steps of obtaining the relative length value x/b of each point position and the relative half-width value y/b of each point position to form the rudder blade size scaling table; the step of determining the actual rudder blade size table comprises the step of multiplying the rudder blade length B by the relative length value x/B and the relative half-width value y/B of each point position in the rudder blade size scaling table respectively to obtain the actual point position rudder length value x 'and the actual rudder blade half-width value y' of each point position and form the actual rudder blade size table. The manufacturing and installing method of the rudder blade can obtain the actual rudder blade size meter of the rudder blade with different rudder blade lengths B according to the rudder blade size scaling meter, and is suitable for manufacturing the rudder blade with the same rudder type but different sizes, so that the manufacturing process of a ship is simplified, and the production efficiency is improved.)

1. A method for manufacturing and installing a rudder blade is characterized by comprising the following steps:

selecting a rudder type: determining a rudder blade line type and a rudder blade design drawing of a rudder blade (1) according to the ship type;

determining a rudder blade size scaling table: an X axis is made along the central line (100) of the rudder blade, a Y axis vertical to the X axis is horizontally made, and the X axis and the Y axis are intersected at the head end of the rudder blade; selecting a plurality of point positions on the central line (100) of the rudder blade, recording the distance from each point position to the head end of the rudder blade and defining the distance as the point position rudder length value x of each point position, recording the distance from each point position to the edge of the rudder blade along the Y-axis direction and defining the distance as the rudder blade half-width value Y of each point position; determining the distance from the tail end of the rudder blade to the head end of the rudder blade and defining the distance as the total length b of the rudder blade, and dividing the point position rudder length value x of each point position by the total length b of the rudder blade to obtain a relative length value x/b of each point position; dividing the half-width value y of the rudder blade at each point position by the total length b of the rudder blade to obtain a relative half-width value y/b of each point position, wherein the relative length value x/b of each point position and the relative half-width value y/b form a rudder blade size scaling table;

determining an actual rudder blade size table: determining the rudder blade length B of the rudder blade (1), and multiplying the rudder blade length B by the relative length value x/B and the half-width value y/B of each point position in the rudder blade size scaling table respectively to obtain an actual point position rudder length value x 'and an actual rudder blade half-width value y' of each point position; the actual point position rudder length value x 'and the actual rudder blade half-width value y' of each point position form an actual rudder blade size table;

manufacturing a rudder blade: producing and manufacturing the rudder blade (1) according to the actual rudder blade size table and the rudder blade design drawing;

installing a rudder blade: and the rudder blade (1) is arranged on an arm-hanging rudder (3) of the ship body (2).

2. A rudder blade manufacturing and installing method as claimed in claim 1 wherein the number of points selected in the rudder blade size scaling table is not less than 10.

3. A rudder blade manufacturing and installing method as claimed in claim 2 wherein the number of points selected in the rudder blade size scaling table is 20.

4. Rudder blade manufacturing and mounting method according to claim 1, characterised in that the rudder blade (1) is a half-balanced rudder, the rudder blade line of the rudder blade (1) corresponding to the line of the jib rudder (3).

5. A rudder blade manufacturing and installing method as claimed in claim 1 further comprising, after the rudder blade manufacturing step and before the rudder blade installing step, the steps of:

designing a flow making plate: and a flow control plate (5) is arranged at the lower end of the rudder blade (1).

6. Rudder blade manufacturing and mounting method according to claim 5, characterised in that the length of the flow control plate (5) extending over the circumferential edge of the lower end of the rudder blade (1) in the horizontal direction is 300 mm.

7. A rudder blade manufacturing and installing method as claimed in claim 1, wherein the rudder blade installing step further includes:

mounting a false rudder: the upper end of a false rudder (4) is fixedly arranged on the ship body (2), the false rudder (4) is located right above the rudder blade (1), and the distance a between the lower end of the false rudder (4) and the lower end of the rudder blade (1) is 100 mm.

8. A rudder blade manufacturing and installing method as claimed in claim 1 wherein, in the rudder blade installing step, the rudder blade (1) is a half balance rudder, an upper half portion of the rudder blade (1) is rotatably connected to a lower portion of the arm rudder (3), and an interval gap b at a connection position of the upper half portion of the rudder blade (1) and the lower portion of the arm rudder (3) is 50-100 mm.

9. Rudder blade manufacturing and mounting method according to claim 8, characterised in that the gap b between the upper half of the rudder blade (1) and the lower part of the rudder horn (3) is 50 mm.

10. A rudder blade manufacturing and installing method as claimed in claim 8 wherein the rudder blade installing step further includes:

the rounding of the hanging arm rudder is arranged: and rounding the edge position of the lower part of the hanging arm rudder (3).

Technical Field

The invention relates to the technical field of ships, in particular to a manufacturing and installing method of a rudder blade.

Background

The rudder blade is a body generating rudder acting force, and is the most commonly used important component for controlling the course of a large ship. The performance of a rudder blade requires a large amount of hydrodynamic calculation and pool test verification, and takes a large amount of time and cost to complete.

Rudder blade designing and manufacturing of existing ships is generally carried out in a ship-rudder designing and manufacturing manner, that is, each time one ship is manufactured, regardless of the type or the size, the rudder blade matched with the ship is manufactured and manufactured again according to the size and the type of the ship. Nevertheless, this kind of mode can obtain the rudder blade that performance is good. However, the manufacturing method of the rudder blade enables an operator to repeatedly design a proper rudder blade for each ship, and particularly when a large number of ships of the same type and different sizes are manufactured, the operator needs to design and manufacture the rudder blades for the ships of the same type and different sizes one by one, so that the problems of complex process, time and energy waste and inconvenience for improving the production efficiency exist.

Therefore, it is desirable to provide a method for manufacturing and installing a rudder blade, which can solve the above problems.

Disclosure of Invention

The invention aims to provide a method for manufacturing and installing rudder blades, which is suitable for manufacturing rudder blades with the same rudder type and different sizes, so as to simplify the manufacturing process of a ship and improve the production efficiency.

In order to achieve the purpose, the invention adopts the following technical scheme:

a manufacturing and installing method of a rudder blade comprises the following steps:

selecting a rudder type: determining a rudder blade line type and a rudder blade design drawing of a rudder blade according to the type of the ship;

determining a rudder blade size scaling table: making an X axis along the central line of the rudder blade, and horizontally making a Y axis vertical to the X axis, wherein the X axis and the Y axis are intersected at the head end of the rudder blade; selecting a plurality of point positions on the center line of the rudder blade, recording the distance from each point position to the head end of the rudder blade and defining the distance as the point position rudder length value x of each point position, recording the distance from each point position to the edge of the rudder blade along the Y-axis direction and defining the distance as the half width value Y of the rudder blade of each point position; determining the distance from the tail end of the rudder blade to the head end of the rudder blade and defining the distance as the total length b of the rudder blade, and dividing the point position rudder length value x of each point position by the total length b of the rudder blade to obtain a relative length value x/b of each point position; dividing the half-width value y of the rudder blade at each point position by the total length b of the rudder blade to obtain a relative half-width value y/b of each point position, wherein the relative length value x/b of each point position and the relative half-width value y/b form a rudder blade size scaling table;

determining an actual rudder blade size table: determining the rudder blade length B of the rudder blade, and multiplying the rudder blade length B by the relative length value x/B and the half-width value y/B of each point position in the rudder blade size scaling table respectively to obtain an actual point position rudder length value x 'and an actual rudder blade half-width value y' of each point position; the actual point position rudder length value x 'and the actual rudder blade half-width value y' of each point position form an actual rudder blade size table;

manufacturing a rudder blade: manufacturing the rudder blade according to the actual rudder blade size table and the rudder blade design drawing;

installing a rudder blade: and mounting the rudder blade on an arm-hanging rudder of the ship body.

Optionally, the number of the point positions selected in the rudder blade size scaling table is not less than 10.

Optionally, the number of point locations selected in the rudder blade size scaling table is 20.

Optionally, the rudder blade is a half-balanced rudder, and the rudder blade line type of the rudder blade is the same as the line type of the jib rudder.

Optionally, the method further comprises the following steps after the step of manufacturing the rudder blade and before the step of installing the rudder blade:

designing a flow making plate: and a flow control plate is arranged at the lower end of the rudder blade.

Optionally, in the horizontal direction, the length of the flow control plate extending out of the peripheral edge of the lower end of the rudder blade is 300 mm.

Optionally, the step of installing the rudder blade further includes:

mounting a false rudder: and fixedly mounting the upper end of a false rudder on the ship body, and enabling the false rudder to be positioned right above the rudder blade, wherein the distance a between the lower end of the false rudder and the lower end of the rudder blade is 100 mm.

Optionally, in the step of installing the rudder blade, the rudder blade is a half-balanced rudder, the upper half of the rudder blade is rotatably connected to the lower part of the articulated arm rudder, and the gap b between the upper half of the rudder blade and the lower part of the articulated arm rudder is 50-100 mm.

Optionally, the gap b between the upper half of the rudder blade and the lower part of the jib rudder is 50 mm.

Optionally, the step of installing the rudder blade further includes:

the rounding of the hanging arm rudder is arranged: and chamfering the edge position of the lower part of the hanging arm rudder.

The invention has the beneficial effects that:

the method comprises the steps of firstly selecting a rudder model, then determining a rudder blade size scaling table, then determining an actual rudder blade size table, and finally completing the steps of manufacturing the rudder blade and installing the rudder blade. In the step of determining the rudder blade size scaling table, the distance from each point position to the head end of the rudder blade is recorded and defined as a point position rudder length value x of each point position, the distance from each point position to the edge of the rudder blade along the Y-axis direction is recorded and defined as a half width value Y of the rudder blade of each point position, then the distance from the tail end of the rudder blade to the head end of the rudder blade is determined and defined as a total rudder length b, and then the point position rudder length value x of each point position is divided by the total rudder length b respectively to obtain a relative length value x/b of each point position; dividing the half-width value y of the rudder blade at each point position by the total length b of the rudder blade to obtain the relative half-width value y/b of each point position, wherein the relative length value x/b and the relative half-width value y/b of each point position form a rudder blade size scaling table; in the step of determining the actual rudder blade size table, the actual point position rudder length value x 'and the actual rudder blade half-width value y' of each point position are obtained by determining the rudder blade length B of the rudder blade and multiplying the rudder blade length B by the relative length value x/B and the relative half-width value y/B of each point position in the rudder blade size scaling table respectively, and the actual point position rudder length value x 'and the actual rudder blade half-width value y' of each point position form the actual rudder blade size table. Therefore, the method for manufacturing and installing the rudder blade can obtain the actual rudder blade size table of the rudder blade with different rudder blade lengths B according to the rudder blade size scaling table, and further complete the manufacturing and installing of the rudder blade according to the rudder blade design drawing and the actual rudder blade size table.

Drawings

FIG. 1 is a schematic structural view of a rudder blade provided by the invention and mounted on a ship body;

FIG. 2 is a schematic front view of a rudder blade and an arm rudder provided by the present invention;

FIG. 3 is a schematic top view of the lower end position of the rudder blade provided by the present invention;

fig. 4 is a perspective view of a rudder blade according to the present invention.

In the figure:

100-rudder blade center line; 1-rudder blade; 2-a ship body; 3-hanging an arm rudder; 4-false rudder.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The embodiment provides a manufacturing and installing method of a rudder blade, and fig. 1 is a schematic structural diagram of the rudder blade of the embodiment installed on a ship body; fig. 2 is a front view schematically showing a rudder blade and an arm rudder according to the present embodiment; FIG. 3 is a schematic top view of the lower end position of the rudder blade according to the present embodiment; fig. 4 is a perspective view of the rudder blade according to this embodiment. The manufacturing and mounting method of the rudder blade comprises the following steps:

selecting a rudder type: determining a rudder blade line type and a rudder blade design drawing of a rudder blade 1 matched with the size type of a ship by adopting the existing design mode according to the type of the ship;

determining a rudder blade size scaling table: as shown in fig. 3-4, an X-axis is made along the central line 100 of the rudder blade, and a Y-axis perpendicular to the X-axis is made horizontally, and the X-axis and the Y-axis intersect at the tip end of the rudder blade, i.e. at the position O in fig. 3; selecting a plurality of point locations (not shown in the figure) on the central line 100 of the rudder blade, recording the distance from each point location to the head end of the rudder blade and defining the distance as the length value x of the point location rudder blade of each point location, recording the distance from each point location to the edge of the rudder blade along the Y-axis direction and defining the distance as the half-width value Y of the rudder blade of each point location; determining the distance from the tail end of the rudder blade to the head end of the rudder blade and defining the distance as the total length b of the rudder blade, and dividing the point position rudder length value x of each point position by the total length b of the rudder blade to obtain a relative length value x/b of each point position; dividing the half-width value y of the rudder blade at each point position by the total length b of the rudder blade to obtain the relative half-width value y/b of each point position, wherein the relative length value x/b and the relative half-width value y/b of each point position form a rudder blade size scaling table;

determining an actual rudder blade size table: determining the rudder blade length B of the rudder blade 1, and multiplying the rudder blade length B by the relative length value x/B and the relative half-width value y/B of each point position in a rudder blade size scaling table respectively to obtain the actual point position rudder length value x 'and the actual rudder blade half-width value y' of each point position; the actual point position rudder length value x 'and the actual rudder blade half-width value y' of each point position form an actual rudder blade size table;

manufacturing a rudder blade: manufacturing a rudder blade 1 according to an actual rudder blade size table and a rudder blade design drawing;

installing a rudder blade: as shown in fig. 1 to 2, a rudder blade 1 is attached to an arm rudder 3 of a hull 2.

In the step of determining the rudder blade size scaling table, the distance from each point position to the head end of the rudder blade is recorded and defined as the point position rudder length value x of each point position, the distance from each point position to the edge of the rudder blade along the Y-axis direction is recorded and defined as the half-width value Y of the rudder blade of each point position, then the distance from the tail end of the rudder blade to the head end of the rudder blade is determined and defined as the total length b of the rudder blade, and then the point position rudder length value x of each point position is divided by the total length b of the rudder blade respectively to obtain the relative length value x/b of each point position; dividing the half-width value y of the rudder blade at each point position by the total length b of the rudder blade to obtain the relative half-width value y/b of each point position; finally, the relative length value x/b and the relative half-width value y/b of each point position form a rudder blade size scaling table; in the step of determining the actual rudder blade size table, the actual point position rudder length value x 'and the actual rudder blade half-width value y' of each point position are obtained by determining the rudder blade length B of the rudder blade and multiplying the rudder blade length B by the relative length value x/B and the relative half-width value y/B of each point position in the rudder blade size scaling table respectively, and the actual point position rudder length value x 'and the actual rudder blade half-width value y' of each point position form the actual rudder blade size table. Therefore, the manufacturing and installing method of the rudder blade can obtain the actual rudder blade size table of the rudder blade with different rudder blade lengths B according to the rudder blade size scaling table, and then quickly finish the manufacturing of the rudder blade with different rudder blade lengths B according to the rudder blade design drawing and the actual rudder blade size table, and is suitable for manufacturing the rudder blade with the same rudder type and different sizes. Therefore, when rudder blades with the same rudder type but different sizes are required to be designed and installed on ships with different sizes, a worker does not need to repeatedly design rudder blades from one ship to one rudder, only the existing rudder blade design method is needed to design the rudder blade once, for example, only the rudder blade with the rudder blade z total length B of 5m is designed, and then the actual rudder blade size meter of the rudder blade with different rudder blade length B, for example, the rudder blade with the rudder blade length B of 6m, 6.5m or 8m, can be quickly obtained according to the steps of determining the rudder blade size scaling meter and determining the actual rudder blade size meter, so that the design and manufacture of the rudder blades with the same rudder type but different sizes are quickly completed, the manufacturing process of the ship is simplified, and the production efficiency is improved.

Furthermore, in order to improve the design and manufacturing precision of the rudder blade with different rudder blade lengths B. The number of the point positions selected in the rudder blade size scaling table is not less than 10. In the embodiment, the number of the point positions selected in the rudder blade size scaling table is 20, so that enough relative length values x/B and relative half-width values y/B of the point positions can be obtained, and the design and manufacturing precision of rudder blades with different rudder blade lengths B can be improved.

In addition, in this embodiment, the rudder blade 1 is a half-balanced rudder, and the rudder blade line type of the rudder blade 1 is the same as the line type of the jib rudder 3, that is, the side wall between the rudder blade 1 and the jib rudder 3 is kept to form a smoothly-transiting continuous curved surface, so that a stable flow field can be formed at the rudder blade 1 and the jib rudder 3 in the running process of the ship.

Further, the method also comprises the following steps after the step of manufacturing the rudder blade and before the step of installing the rudder blade:

designing a flow making plate: as shown in fig. 1 to 3, a damper plate 5 is provided at the lower end of the rudder blade 1.

The flow control plate 5 in this embodiment can suppress the lateral flow of the water flow from the high pressure surface to the low pressure surface during steering, thereby enhancing the steering effect. Specifically, the rudder blade 1 is vertically arranged in the vertical direction at the mounting position of the hull 2, and the length of the baffle 5 extending from the peripheral edge of the lower end of the rudder blade 1 in the horizontal direction is 300mm, so that the lateral flow of the water flow from the high pressure surface to the low pressure surface during steering can be suppressed, and the steering efficiency can be enhanced.

Further, the rudder blade mounting step further includes:

mounting a false rudder: the upper end of the false rudder 4 is fixedly installed on the ship body 2, the false rudder 4 is positioned right above the rudder blade 1, and the distance a between the lower end of the false rudder 4 and the lower end of the rudder blade 1 is 100 mm.

Because the bigger the gap between the rudder blade 1 and the false rudder 4 is, the more easily the cavitation is generated, and the performance of the rudder blade is not facilitated, in the embodiment, the distance a between the lower end of the false rudder 4 and the lower end of the rudder blade 1 is 100mm, the gap is small, and the cavitation is not easily generated, and meanwhile, the proper distance is kept between the lower end of the false rudder 4 and the lower end of the rudder blade 1, so that the construction, installation and cleaning are facilitated.

Further, as shown in fig. 1 to 3, the rudder blade 1 is a half-balanced rudder, in the step of mounting the rudder blade, the upper half portion of the rudder blade 1 is rotatably connected with the lower portion of the jib rudder 3, and the interval gap b at the connection position of the upper half portion of the rudder blade 1 and the lower portion of the jib rudder 3 is 50 to 100 mm. Specifically, as shown in fig. 1, the gap b between the upper half of the rudder blade 1 and the lower part of the jib rudder 3 is 50 mm. The upper half part of the rudder blade 1 and the interval gap b at the connecting position of the lower part of the hanging arm rudder 3 keep a proper distance, which is favorable for reducing the generation of bubbles on one hand and is convenient for installation and construction on the other hand.

Further, in order to increase the flexibility of the rudder, the step of installing the rudder blade further comprises:

the rounding of the hanging arm rudder is arranged: and the edge position of the lower part of the hanging arm rudder 3 is chamfered.

This embodiment can improve the flexibility of pendulum rudder through carrying out the fillet setting to the border position of the lower part of hanging arm rudder 3.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.