JPH0633079B2 - Ship rudder assembly method - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a method for assembling a rudder for a ship.

2. Description of the Related Art As shown in FIGS. 2 to 3, a conventional rudder for a ship has a rudder plate 21 that is half-cut from the center of the rudder in terms of the direction of travel of the ship and is molded into a predetermined shape in advance. The rudder main body 25 by welding the vertical rudder 23 and the other side of the horizontal rudder 24, which have T-shaped attachment pieces 22 welded to one side at a predetermined position on the inner surface of the rudder
The skeleton of is structured in a lattice. After that, it is molded into a predetermined shape so as to cover its skeleton, and the vertical rudder bone 23
And the remaining rudder blade 27 having vertical and horizontal slot holes 26 at predetermined intervals at positions corresponding to the horizontal rudder bones 24 and the slot holes 26.
The remaining rudder plate 27 is fixed to the vertical rudder 23 and the horizontal rudder 24 by welding the inner peripheral end of the and the outer surface of the mounting piece 22, and the rudder front end part 28 of both rudder plates 21 and 27 and the rear rudder The end portions 29 are welded together. After that, the rudder body 25 was constructed by covering the upper and lower surfaces with the bottom plate 30 and the bottom plate 31. Note that 32 is a rudder head material and 33 is a bottom bintle.

Problems to be Solved by the Invention As described above, the rudder main body 25 has the preformed rudder plate 21.
The vertical rudder 23 and one side of the horizontal rudder 24 are welded and fixed to the inner surface of the vertical rudder 23 and the horizontal rudder 24 on the other side, and the mounting piece 22 attached to the other side and the remaining rudder plate 27 are provided with slot holes. Since the inner peripheral end of 26 is formed by welding, the remaining rudder plate 27 has to be provided with a large number of slot holes 26, which requires a lot of working time and the weight of the rudder main body 25. Since it is large, there was a problem in workability.

An object of the present invention is to eliminate the slot hole 26 and the horizontal rudder bone 24, and to provide an assembling method of a ship rudder capable of solving the above-mentioned problems all at once.

Means for Solving the Problems In order to solve the above problems, the present invention is to fix the central rudder plate in a fixed position on both sides of the top plate and the bottom plate in a sandwiched manner, and then to center between the left and right central rudder plates. Insert the vertical rudder bone and weld and fix its periphery to the top plate, bottom plate, and central rudder plate, and then create the separately created front edge rudder plate and the front edge block composed of the front edge vertical rudder bone. Insert the trailing edge block that consists of the trailing edge rudder plate and the trailing edge vertical rudder bone that form the trailing edge part into the front and rear ends of the top plate and bottom plate of the rudder body, and insert all the parts that come into contact with the central rudder plate, top plate, and bottom plate. The rudder body is constructed by welding and fixing.

By the above-mentioned configuration, the horizontal rudder bone, which is the skeleton of the rudder main body, is abolished, so the weight is reduced, and further, the slot hole that has been conventionally drilled in the rudder plate is abolished, so the working time for processing is shortened, It becomes easy to weld the rudder blade and the vertical rudder bone. Moreover, since the leading edge block and the trailing edge block are separately prepared, a part of the assembling work can be performed in parallel, and the working time can be further shortened.

Embodiment An embodiment of the present invention will be described below with reference to FIG.

Reference numeral 1 is a rudder body, and central rudder blades 12, 12 are fixedly welded and fixed to predetermined positions on both sides of a preformed top plate 4 and bottom plate 5. Then, from the front edge 8 side of the wide center vertical rudder bone 1
3, 13 are sequentially inserted, and the peripheries thereof are welded and fixed to the top plate 4, the bottom plate 5, and the central rudder plates 12, 12.

On the other hand, a front edge block 16 composed of front edge rudder blades 14 and 14 and a front edge vertical rudder bone 15 forming the front edge portion 8 and rear edge rudder blades 17 and 17 and rear edge vertical rudder bone forming the rear edge portion 9 are formed. A trailing edge block 19 consisting of 18 is created separately.

Then, the leading edge block 16 and the trailing edge block 19 are inserted into the front and rear end portions of the top plate 4 and the bottom plate 5 of the rudder body 1, and the central rudder plates 12, 12 and the portions which come into contact with the top plate 4 and the bottom plate 5 are fixed by welding. Then, the rudder body 1 is configured.

Reference numeral 10 is a rudder head member fixed to the top plate 4, and 11 is a bottom pintle fixed to the bottom plate 5.

As described above, according to the present invention, the weight is reduced with the abolition of the horizontal rudder bone, the machining time of the rudder blade is drastically shortened with the elimination of the slot hole, and the vertical rudder blade and Welding work with the rudder end face becomes extremely easy, improving work efficiency.Because the leading edge block and the trailing edge block are created separately, part of the assembly work can be performed in parallel,
The working time can be further shortened, and there are many effects such as improved workability in transportation and mounting.

[Brief description of drawings]

FIG. 1 is a perspective view showing an assembling procedure in one embodiment of the present invention, and FIG. 2 is a view of A- in FIG. 3 showing a structure of a conventional vessel rudder.
FIG. 3 is a front view of the A cross-section plan view. 1 ... rudder body, 2 ... one rudder plate, 4 ... top plate, 5 ...
Bottom plate, 6 ... The other rudder plate, 8 ... Front edge, 9 ... Rear edge, 12 ... Central rudder plate, 13 ... Central vertical rudder bone, 16 ... Leading edge block, 19 ... Rear Edge block.

Claims (1)

[Claims] 1. A central rudder plate is welded and fixed to predetermined positions on both sides of a top plate and a bottom plate, and then a central vertical rudder bone is inserted between the left and right central rudder plates to surround the top plate, the bottom plate, Welded and fixed to the central rudder blade, and then created a leading edge rudder plate that forms the leading edge and a leading edge vertical block that consists of the leading edge vertical rudder, and a trailing edge rudder plate that forms the trailing edge and a trailing edge vertical. The rudder main body is constructed by inserting a trailing edge block consisting of a rudder bone into the front and rear end portions of the top plate and bottom plate of the rudder body, and welding and fixing all the portions contacting the central rudder plate, the top plate, and the bottom plate. Assembling method of rudder for ship.