JP2007261340A - Fittings mounting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate troublesomeness in collating the actual hull block with the fittings layout chart when the fittings is to be mounted on a hull block and also lower the rate of error occurrence. <P>SOLUTION: This method of mounting the fittings on the hull block includes a markoff process to mark a pipe mounting position with a markoff line 5 on a steel plate 1 as the material to the hill block and a mounting process to mount the pipe in conformity to the markoff line 5 after the assembly of the hull block is completed. Marking-off for the pipe mounting position is automated by using an NC markoff machine in the markoff process. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a fitting attachment method for attaching pipes, ducts, and other devices to a hull block.

  Ship construction is broadly divided into hull construction and outfitting work. In a nutshell, hull construction is the process of cutting, bending, and joining steel plates to create a “box”, and outfitting works are “boxes”, ducts, pipes and other equipment (= fittings) ).

  FIG. 3 is a flowchart conceptually showing the ship construction work divided into hull construction and outfitting work. In general, a process for manufacturing a frame such as a bridge structure is included in the outfitting work. In this specification, this process is included in the hull work in a broad sense. In addition, in the present specification, when the term “hull” is simply used, it means not only the main hull but also the entire structural frame (= “box”) of the ship including the bridge structure.

  As shown in FIG. 3, the hull construction starts with the marking of the steel material (S1). The ruled line is an operation of drawing a line that becomes a reference for cutting, bending and assembling on the surface of a steel material which is a material of the hull. When the ruled lines are finished, cutting (S2) and bending (S3) are performed. Today, it is common to use a NC (numerical control) cutting and scribing machine (for example, Patent Document 1) to perform scoring and cutting in the same process.

  The steel materials that have been cut and bent are collected for each hull block and assembled into blocks (S4).

  The assembled hull blocks are collected on the stern (or building dock), and the stern assembly is performed (S5). When the stern assembly is completed, the hull is completed, and a launching operation is performed (S6).

  The outfitting work begins with the processing of the material of the outfitting parts such as ducts and pipes (S7). The processing here includes cutting, bending, and flange mounting. Needless to say, parts (for example, valves) and devices (for example, main machines) purchased in the form of finished products do not pass through this process.

  When the assembly of the hull block is completed in the hull construction process, the equipment is carried in and attached to the hull block (S8). After that, the outfitting work is carried out in parallel with the hull construction, and after launching, trial operation and adjustment (S9) are performed, and the ship is completed.

  Here, the relationship between construction work and design work will be described. FIG. 4 is a flowchart conceptually illustrating the ship design work. As shown in FIG. 4, the design work starts from the basic plan (S11). The basic plan is an operation for determining the main dimensions, ship type and performance of the ship. Once the main dimensions and hull form are determined, the general hull structure is determined, and once the hull form and performance are determined, the size of the main engine and the outline of the peripheral system are determined, and the subsequent design work is divided into hull design and outfitting design.

  The hull design and outfitting design will proceed in parallel, but the hull design will precede. This is because the arrangement, dimensions, and shape of ducts and pipes attached to the hull cannot be determined unless the structure and dimensions of the hull are determined. When the hull design progresses and the details of the shape and structure of the hull are determined, a hull drawing is created (S12). When the hull drawing is completed, the shape of the members that make up the hull is fixed, so the information for cutting out the members from steel and the information for making the rules for processing the members are NC (numerical control) cutting and scoring machines. It is created in the form of NC data for controlling (S13). The created NC data is sent to the aforementioned S1 (ruled line) and S2 (cutting) processes.

  Further, the hull drawing is sent to a person in charge of the outfitting design, and the person in charge of the outfitting design determines the arrangement of ducts, pipes and other parts and equipment based on the hull drawing, and creates the outfitting arrangement drawing (S14). ). The equipment layout is sent to the above-described step S8 (installation of equipment), and the person in charge of the equipment construction works according to the equipment layout.

  Furthermore, the person in charge of outfitting creates a outfitting processing figure based on the outfitting arrangement drawing. The equipment drawing is a drawing showing dimensions and shapes of ducts, pipes and the like. The equipment processing drawing is sent to the above-described step S7 (processing of the equipment).

  Now, returning to the story of construction work, the installation work of the fittings on the hull block will be described in detail. When the assembly of the hull block is completed and the hull block is delivered to the person in charge of the outfitting, the person in charge of the outfitting collects the equipment to be attached to the hull block, transports it to the hull block, and places the outfitting Attach the equipment to the hull block according to the figure.

  FIG. 5 is an example of an equipment layout diagram. The thick lines in FIG. 5 indicate the arrangement of ducts and pipes attached to the hull block. The person in charge of outfitting reads the outfitting arrangement map, selects a specific outfitting from the gathered outfittings, and manually installs the specific outfitting on the hull block according to the description of the outfitting arrangement. Make a ruled line and instruct the worker to install it. This work requires patience as if solving a jigsaw puzzle.

  FIG. 5 is a perspective view of the fittings attached to the lower surface (back surface) of the deck under the principle of drawing from the top to the bottom. On the other hand, in the installation work of the equipment on the hull block, the hull block is turned upside down to avoid the upward work. In other words, the person in charge of outfitting works while standing on the lower surface of the deck (the ceiling if compared to a house) and looking down on the lower surface (ceiling) of the deck. Therefore, the shape of the hull block actually seen by the person in charge of outfitting work in FIG. 5 has a mirror image relationship, which makes the work more difficult.

In order to facilitate the installation work of the equipment on the hull block, it has been proposed to project the equipment arrangement image on the hull block with a projector provided in the work place where the installation work is performed (Patent Document 2). ).
Japanese Patent Application Laid-Open No. 07-157858 JP 2001-259943 A

  In the invention disclosed in Patent Document 2, since the equipment layout image is projected onto the hull block, it is necessary for the person in charge of the equipment construction to determine the attachment position of the equipment by comparing the equipment layout diagram and the actual ship block. This reduces the work burden of the person in charge of outfitting work and reduces the incidence of misuse.

  However, the invention disclosed in Patent Document 1 and the like is difficult to implement because it is necessary to correctly project the equipment arrangement image onto the hull block. In addition, there is a problem that it is not possible to deal with fittings attached to the wall surface.

  Further, since the equipment arrangement image is projected from above the hull block, there is also a problem that when the equipment is attached, the projected image becomes a shadow of the equipment or the person in charge of the equipment construction.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to eliminate the complexity of collating the equipment arrangement diagram and the actual ship block at the time of attaching the equipment to the hull block, and to reduce the incidence of malfunction.

  The first configuration of the equipment mounting method of the present invention is a scoring process for displaying the mounting position of the equipment on the steel plate, which is a material of the hull block, in a scoring line in the equipment mounting method for attaching the equipment to the hull block. And an attachment step of attaching the fitting according to the ruled lines after the assembly of the hull block is completed.

  According to this configuration, since the equipment is attached according to the ruled lines previously marked on the steel plate, the person in charge of the equipment construction compares the equipment layout drawing and the hull block on-site and manually sets the attachment position of the equipment. Eliminating the need for ruled lines improves the efficiency of fitting equipment installation work. In addition, the incidence of malfunctions is reduced.

  The hull block does not mean only a narrow hull, that is, a block constituting a main hull below the upper deck. It is a broad concept including blocks that constitute superstructures such as a bridge and a residential area.

  Further, “after completion of the assembly of the hull block” means a state in which the hull block is assembled to the extent that the fitting can be attached, and does not necessarily mean the completion of the hull block. For example, the bridge structure is equipped with the blocks of each layer, and the blocks of each layer that have been equipped are stacked to complete the bridge structure block. Corresponds to “Installing Fittings Later”.

  According to a second configuration of the fitting attachment method of the present invention, in the first configuration, the ruled line is marked with an NC ruler.

  According to this configuration, since the NC scribing machine is used, the scoring process can be automated. In addition, since the ship design information is digitized and digitized, it is possible to easily automate the creation of NC data for controlling the NC scoring machine by processing the design information related to the arrangement of the equipment.

  According to a third configuration of the fitting attachment method of the present invention, in the second configuration, the NC scribing machine is a scribing machine that also serves as a cutting machine.

  Since the NC ruler cutting machine is a common facility in the hull construction department of a shipbuilding factory, the present invention can be implemented without introducing a new facility.

  According to a fourth configuration of the fitting accessory mounting method of the present invention, a character for displaying information relating to the attribute or attachment position of the fixture is displayed on the steel plate with a ruled line.

  According to this configuration, since the information regarding the attribute and attachment position of the fitting is preliminarily marked on the steel plate, the fitting can be attached without referring to the arrangement drawing of the fitting.

  According to a fifth configuration of the equipment mounting method of the present invention, the symbol of the equipment is displayed on the steel plate with a ruled line.

  According to this configuration, since the symbol of the fitting is ruled on the steel plate, the type of the fitting to be attached can be intuitively understood, and the work efficiency is improved.

  As described above, according to the present invention, since the fitting is attached according to the ruled line previously marked on the steel plate, the efficiency of the fitting attachment work is improved. In addition, the present invention can be implemented only by changing software related to the design and manufacture of a shipyard, and does not require new equipment, which greatly contributes to the improvement of the productivity of the shipyard.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 is a flowchart showing the concept of design work according to an embodiment of the present invention. As shown in FIG. 1, the design work starts from the basic plan (S21) and is divided into the hull design and the outfitting design, but the hull drawing creation (S22) and the outfitting arrangement drawing creation (S23). ) In parallel. Of course, if the shape and dimensions of the hull are not determined, the arrangement of the fittings to be attached to the hull cannot be determined, so the creation of the hull drawing (S22) is somewhat advanced. However, the information on the hull drawing and the equipment layout drawing being created is shared between the hull designer and the equipment designer, and if one is changed, it is reflected in the other, so-called concurrent. If engineering methods are introduced, it is possible to proceed almost simultaneously.

  If the equipment layout drawing is completed almost simultaneously with the hull drawing, the information regarding the layout of the equipment can be directly marked on the steel plate in the above-described S1 (ruled line) process. Therefore, in addition to the normal ruled line and NC data for cutting, NC data for making a ruled line on the steel sheet is created for information related to the arrangement of the fittings and sent to the S1 (ruled line) step (S24).

  That is, the simultaneous creation of the hull drawing (S22) and the equipment layout drawing (S23) is the same timing as sending normal ruled lines and NC data for cutting to the S1 (ruled line) process. This means that the equipment layout drawing is created in such a schedule that NC data for scoring information on the layout of the equipment on the steel sheet can be sent to the S1 (ruled paper) process.

  FIG. 2 is a diagram illustrating an example of ruled sheets on a steel plate according to an embodiment of the present invention. In FIG. 2, reference numeral 1 denotes a steel plate, and figures, symbols, and characters drawn on the steel plate 1 indicate cutting lines and ruled lines formed on the steel plate 1 by an NC cutting / scribing machine.

  Reference numeral 2 denotes a cutting line, which indicates that a rectangular opening is cut in the steel plate 1. 3 is a ruled line indicating the mounting position of the longe (longitudinal rib), and 4 is a ruled line indicating the mounting position of the transformer (horizontal rib). In addition, a character “L09” or the like indicates a long number, and a character “FR41” indicates a frame number. The above are the cutting lines and ruled lines common to the conventional ruled line / cutting process (S1, S2).

  Reference numeral 5 denotes a ruled line indicating the attachment position of the pipe. The person in charge of outfitting work should install the pipe so that the pipe runs along this line. The letter “30FA” indicates the nominal diameter and type of the pipe. Based on the shape of the pipe indicated by line 5 and this letter, the person in charge of outfitting works searches for the corresponding pipe from the gathered pipes. Instead of displaying the nominal diameter and type, a part number unique to the pipe may be displayed. Further, the letter “H = 300” or the like indicates the installation height of the pipe measured from the steel plate 1. The person in charge of the outfitting work may bring a pipe stay corresponding to this display and weld the steel plate 1 to fix the pipe. An arrow “<” attached in the middle of the line 5 indicates that the pipe is inclined between the two arrows and becomes lower in the direction of the arrow. However, when installing the fittings to the hull block, since the top and bottom of the hull block is reversed, the pipe becomes higher in the direction of the arrow.

  Reference numeral 6 denotes a position display indicating the pipe mounting position by the distance from the transformer to the pipe. Note that if there is a discrepancy between the display of the line 5 and the position display 6 due to a work error or post deformation, the person in charge of outfitting works prioritizes the position display 6 and positions the pipe.

  7 is a symbol indicating a flange joint, and 8 is a symbol indicating a valve. By using symbols associated with actual flange joints and valve shapes, the staff in charge of the outfitting work are alerted and aimed at reducing the incidence of malfunctions. Moreover, although the character “5K-25GV” represents the type of the valve, a part number may be displayed instead of the type.

  In the present embodiment, an example of performing a ruled line by using an NC cutting and ruler has been shown, but the present invention is not limited to the one using an NC cutting and ruler. A ruled line may be made with an EPM (electrophotographic ruled line) apparatus, or a ruled line may be made manually. In short, in the process of making a ruled line that serves as a reference for cutting and bending the steel plate that is the material of the hull block, all those that perform the ruled line work indicating the attachment position of the fittings belong to the category of the present invention, The present invention can be implemented using a ruled line method.

  In the present embodiment, an example in which the attachment positions of pipes, valves, and the like are marked on the steel plate is shown, but the fittings targeted by the present invention are not limited to these. It goes without saying that ducts, electric wires, electric wire racks, and all other fittings are covered.

It is a flowchart which shows the concept of the design work based on the Example of this invention. It is a figure which shows the example of the ruled paper on the steel plate based on the Example of this invention. It is the flowchart which showed the construction construction of the ship notionally. 5 is a flowchart conceptually illustrating a ship design work. It is an example of outfitting arrangement drawing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Steel plate 2 Cutting line 3 Ruled line which shows the attachment position of Longi 4 Ruled line which shows the installation position of a transformer 5 Ruled line which shows the installation position of a pipe 6 Position display 7 Symbol which shows a flange joint 8 Symbol which shows a valve

Claims (5)

In the fitting installation method of attaching the fitting to the hull block,
A scoring process for displaying the mounting position of the fitting on the steel plate which is a material of the hull block by a scribing line;
A fitting equipment mounting method comprising a mounting step of mounting the equipment according to the ruled lines after the assembly of the hull block is completed. The method for attaching a fitting according to claim 1, wherein the ruled line is marked with an NC ruler. The method for attaching a fitting according to claim 2, wherein the NC scribing machine is a scoring machine that also serves as a cutting machine. The method for attaching a fitting according to any one of claims 1 to 3, wherein a character for displaying information on the attribute or attachment position of the fitting is displayed on the steel plate with a ruled line. The method for attaching an outfitting according to any one of claims 1 to 4, wherein the symbol of the outfitting is displayed on the steel plate with a ruled line.

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