如何看懂造船图纸（How to read shipbuilding drawings）
How to read shipbuilding drawings
For example: HP ball flat steel, Pl8 refers to 8 mm steel plate, W, FL are T profiles of panels and panels
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FB ribbed plate
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BHD bulkhead abbreviation广州电子商务
AB platform abbreviation
BL baline abbreviation, in the manufacture of a variety of ship models, usually contact the model work drawings. The work graph model is the main basis for making the ship model, it not only tell us the model type, name, shape and size, but also enable us to understand the structure and installation parts model etc.. The drawings of some models also briefly describe the internal structure of the model, power units, components, asmbly, control systems and manufacturing methods, so that we have a better understanding of the ship model. Therefore, it is very important for us to take a good look at the drawings and find out the technical requirements, which is the preparation of materials and tools, the methods and steps of making decisions. In order to reprent a ship model or a component correctly, a
three view of an actual object is usually required. That is, the front view (from the front of the object), the side view (from the side of the object), and the top view (from the object). In addition to the three view, the part drawing is the manufacturing drawings of the ship model, superstructure and parts, and some drawings of the actual
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In order to correctly understand the working drawings of ship models, it is necessary to familiarize themlves with the meaning of various lines and symbols in the drawings. Drawing on a common solid line, thin solid line, dotted line, dotted line, broken and profile etc. (Figure 2 - 1).
Solid line: the general appearance of all visible objects contour.
Dotted line: the outline of an object that is generally occluded.
A thin solid line: usually reprents the size, line, size, line, line, and line of an object.
冰河世纪3迅雷下载Scribe line: usually the center line, position, line, and axis of an object.
英文歌曲网站A broken line or wave line, usually one of the places where an object is broken. Some do not
Where all the drawings need to be drawn, they can be omitted by means of broken wires or waves
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Profile line: a general reprentation of an object.
The symbols commonly ud in drawings are M, D, R, etc..
M stands for scales. For example, "Ml:100" means that the size of the drawing is one percent of the object.
D reprents the diameter of a circular object or round hole. Than 1.5, indicating diameter in millimeters, or 4.5 millimeters.
R reprents the radius of a circular object or round hole. R4.5, for example, means that the radius is 4.5 millimeters. The working drawings of ship models generally include general layout, hull line drawings and part drawings.
apartmentsThe general layout is an important drawing showing the overall situation of the ship, mainly drawn from the projection principle of the three view. In the front view of the ship (from the front of the ship's
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model), the top view (from the top view), the side view (including the front view and the rear view), reprents the overall shape, dimensions, and the layout of each part of the ship. It allows us to understand the design of this model, the ship's overall picture, the shape, size and position of the larger parts, such as the hull and superstructure. Look, the front view and general layout of the top view and side view of comparison, at the same time, according to the relevant shipbuilding, navigation, weapons and equipment etc. in the study of knowledge, understand the basic situation of the model, such as vesl type, application, characteristics, scale, propeller and rudder the superstructure, types and weapons and equipment and other facilities. The general arrangement of the general layout is shown in Figure 2 - 2.
The hull line diagram is a complete picture of the ship's hull shape below the open deck. It reflects the streamline shape of each part of the ship and plays an important role in the manufacture of the hull, so the line drawings must be drawn very accurately. Three views on the requirements of the curve projection, also requires curve smoothing and coordination.
The three views of ship line drawings are longitudinal profile, half width waterline and transver ction. The three line drawings are obtained from three longitudinal directions, longitudinal, vertical and transver projections of the longitudinal profile, the waterline and the midship ction of the shi
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The projection plane is three planes perpendicular to each other (Figure 2-3)
The longitudinal drawing pass through the middle longitudinal vertical plane of the ship, which divides the hull into two parts, from the stern to the bow, the left hand side is called the port side, and the right hand side is called the starboard side. The interction line between the middle longitudinal ction and the hull surface is called the middle longitudinal ction. If a t of planes with equal distances between each other and the plane parallel to the longitudinal profile is ud to gment the hull, a t of longitudinal lines reprenting the longitudinal shape of the ship can be obtained. The longitudinal profile of the hull is then projected on the mid longitudinal ction (e Figure 2-4). Due to the symmetry of the hull, the longitudinal lines corresponding to the left
and right of the vertical profile are coincident. In order to facilitate identification, the mid longitudinal profile number is zero, and the remaining longitudinal lines are from the inside to the outside, using the Rome digital I, II, III, Numbering. The longitudinal profile shows the shape of the ship, including the deck shape, the keel shape and the outline of the ship.
On the vertical profile, the curve reprents the longitudinal line, the horizontal line reprents the w
aterline, and the vertical line reprents the transver ction (also called the rib position line).
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The cross ctional graph is called the middle transver ction through the interction of the horizontal vertical plumb plane and the middle transver ction of the ship's mid point. It generally reflects the shape of the hull. From the front of the ship to the stern of the ship, including the deck beam line, the ship bottom line and the side line. If a t of planes with equal distances between each other and a plane parallel to the middle cross ction can be ud to gment the hull, a t of transver lines reprenting the transver shape of the hull can be obtained. After projecting this t of cross ctions into the midship ction, a cross-ctional line diagram of the hull is obtained (e figure -4). Since the hull is symmetrical, the cross ction is usually drawn in half. In ction graph, in the transver ction of right part draw stem to a line in the left half of the painting to the ship stern ction lines. In order to make the cross-ctional line drawings conci and easy to identify, they are generally ud from the bow to the stern by Arabia numbers 1, 2, 3, and
