A leveling method for PCTC lifting deck

Abstract

The present invention provides a leveling method for a PCTC lifting deck, which includes building each single lifting deck; arranging the single lifting decks in the direction of the ship length and the ship width in a simulated actual ship loading state; adjusting the flatness of a first group of lifting decks arranged in the ship width direction; obtaining the flatness data of the first group of lifting decks in the direction of the ship length; and adjusting the flatness of other groups of lifting decks arranged in the ship width direction based on the flatness data of the first group of lifting decks in the direction of the ship length. The leveling method for a PCTC lifting deck can solve the problem that it is difficult to level the lifting deck during installation.

Description

Technical Field

[0001] The present application relates to the technical field of shipbuilding, and in particular to a leveling method for a PCTC lifting deck. Background Art

[0002] Car ro-ro transport ships are collectively referred to as PCTC (Pure Car and Truck Carrier), including PCC car ro-ro ships and PCTC car / truck ro-ro ships. Ro-ro transport changes the original lifting of goods to the direct lifting and lowering of cargo vehicles through the gangway connecting the dock and the ship. Ro-ro transport fundamentally changes the traditional process, greatly simplifies the port loading and unloading process, greatly improves the loading and unloading efficiency, and ro-ro ships come into being. PCTC has a large hull, usually with up to 10-14 decks, and a higher center of gravity than other ship types. In order to make it more flexible in loading, PCTC often has multiple layers of height-adjustable movable decks, that is, lifting decks. The movable deck can be raised and lowered by a jacking vehicle. In order to accommodate vehicles of various sizes, the PCTC movable deck must have a lifting function.

[0003] The four corners of the PCTC lifting deck are mainly supported by pillars. Since the thickness of the lifting deck is relatively thin, it is easy to deform during the construction process. In addition, the height difference between the lifting decks must be highly accurate, and the height difference between the lifting decks should not exceed 15mm. This means that during the actual on-site construction process, the accuracy of the construction of a single deck must be controlled, and the height difference between different decks during the overall section / dock installation stage must also be controlled. Therefore, it is difficult to level the lifting deck during installation, and the height difference often exceeds 15mm at the installation site of the lifting deck. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a leveling method for a PCTC lifting deck, so as to solve the problem that the lifting deck is difficult to level during installation.

[0005] According to the present invention, a leveling method for a PCTC lifting deck is provided, wherein the leveling method for the PCTC lifting deck comprises: constructing each single lifting deck; arranging the single lifting decks in the direction of the ship length and the ship width by simulating the actual ship loading state; adjusting the flatness of a first group of lifting decks arranged along the ship width direction; acquiring the flatness data of the first group of lifting decks in the direction of the ship length; and adjusting the flatness of other groups of lifting decks arranged along the ship width direction based on the flatness data of the first group of lifting decks in the direction of the ship length.

[0006] Preferably, the first group of lifting decks is all the lifting decks arranged in the same row in the ship width direction.

[0007] Preferably, the simultaneous flatness adjustment of the first group of lifting decks arranged along the width of the ship includes: a leveling process: making the height difference between each single lifting deck in the first group of lifting decks less than 15 mm; a straightening process: simultaneously leveling the first group of lifting decks arranged along the width of the ship.

[0008] Preferably, the leveling process is thermal leveling.

[0009] Preferably, the flatness data includes height difference data between each two adjacent lifting decks in the first group of lifting decks.

[0010] Preferably, in the process of acquiring the flatness data of the first group of lifting decks in the ship's length direction, a total station is used to measure and record the flatness data of the first group of lifting decks in the ship's length direction.

[0011] Preferably, in the process of acquiring the flatness data of the first group of lifting decks in the ship's length direction, the flatness data of the first group of lifting decks in the ship's length direction is recorded in a template manner.

[0012] Preferably, in the process of obtaining the flatness data of the first group of lifting decks in the ship's length direction, the flatness data of the first group of lifting decks in the ship's length direction is recorded by using a modeling method.

[0013] Preferably, in the process of adjusting the flatness of other groups of lifting decks arranged along the ship width direction based on the data of the first group of lifting decks in the ship length direction, the height difference between each adjacent lifting deck in the other groups of lifting decks is made equal to the height difference between each adjacent lifting deck in the first group of lifting decks.

[0014] Preferably, in the process of adjusting the flatness of other groups of lifting decks arranged along the ship width direction based on the data of the first group of lifting decks in the ship length direction, the height difference between the other groups of lifting decks and the first group of lifting decks is made less than 15 mm.

[0015] The leveling method of the PCTC lifting deck of the embodiment of the present invention first constructs each lifting deck separately to ensure the flatness of a single lifting deck itself, then simultaneously leveling the first group of lifting decks arranged along the ship width direction to ensure the overall flatness of a group of lifting decks, then recording the data of the first group of lifting decks in the ship length direction as a reference, and finally leveling the other groups of lifting decks in the ship width direction based on the data of the first group of lifting decks in the ship length direction, so as to level all the lifting decks of the hull, thereby effectively solving the problem of difficulty in leveling the lifting decks during installation.

[0016] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 Schematic diagram of three groups of lifting decks according to the leveling method of the PCTC lifting deck of the present invention.

[0019] Figure 2 is a schematic diagram of a portion of a hull of a ship according to a leveling method of a PCTC lifting deck of the present invention.

[0020] Figure numerals: 1 - lifting deck; 11 - first group of lifting decks; 12 - second group of lifting decks; 13 - third group of lifting decks; 2 - length direction; 3 - width direction. DETAILED DESCRIPTION

[0021] The following specific embodiments are provided to help the reader obtain a comprehensive understanding of the methods, devices and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be apparent. For example, the order of operations described herein is merely an example, and is not limited to the order set forth herein, but in addition to the operations that must occur in a particular order, changes that will be apparent after understanding the disclosure of the present application may be made. In addition, in order to improve clarity and brevity, descriptions of features known in the art may be omitted.

[0022] The features described herein may be implemented in different forms and should not be interpreted as being limited to the examples described herein. Rather, the examples described herein have been provided only to illustrate some of the many possible ways of implementing the methods, devices and / or systems described herein that will be apparent after understanding the disclosure of the present application.

[0023] Throughout the specification, when an element (such as a layer, a region, or a substrate) is described as being “on”, “connected to”, “bound to”, “over”, or “covering” another element, it may be directly “on”, “connected to”, “bound to”, “over”, or “covering” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on”, “directly connected to”, “directly bound to”, “directly over”, or “directly covering” another element, there may be no other elements present between them.

[0024] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0025] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Therefore, without departing from the teachings of the examples described herein, the first member, component, region, layer, or portion referred to may also be referred to as the second member, component, region, layer, or portion.

[0026] For ease of description, spatial relational terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. Such spatial relational terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, an element described as being "above" or "upper" relative to another element will subsequently be "below" or "lower" relative to the other element. Therefore, the term "above" includes both "above" and "below" orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly.

[0027] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "include", "comprise" and "have" list the stated features, quantities, operations, components, elements and / or their combinations that exist, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or their combinations.

[0028] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.

[0029] The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.

[0030] The present invention provides a leveling method for a PCTC lifting deck, and the leveling method for the PCTC lifting deck comprises the following steps:

[0031] Constructing each individual lifting deck 1;

[0032] Simulating the loading status of a real ship, a single lifting deck 1 is arranged in the direction of the length 2 and the direction of the width 3;

[0033] Performing flatness adjustment on the first group of lifting decks 11 arranged along the ship width direction 3;

[0034] Acquire the flatness data of the first group of lifting decks 11 in the ship length direction 2;

[0035] Based on the flatness data of the first group of lifting decks 11 in the ship length direction 2 , the flatness of other groups of lifting decks 1 arranged along the ship width direction 3 is adjusted.

[0036] In the following description, reference will be made to Figure 1 to Figure 2 The structures of the above-mentioned components and the above-mentioned steps in the leveling method of the PCTC lifting deck are described in detail.

[0037] like Figure 1 and Figure 2 As shown, in the embodiment, a large number of lifting decks 1 are used in a car roll-on / roll-off carrier (i.e., PCTC), and the lifting deck 1 can be a square plate (such as Figure 1 and Figure 2As shown in the figure, the square frames with two intersecting diagonal lines are all lifting decks 1). The lifting decks 1 are closely connected to each other and are regularly arranged along the length direction of the hull (i.e., the length direction 2) and the width direction of the hull (i.e., the width direction 3). Since each lifting deck 1 can realize the function of independent lifting, the lifting decks 1 are not connected to each other, but each lifting deck 1 is supported by the pillars at its four top corners to realize its own lifting function. Preferably, adjacent lifting decks 1 can share the same pillar when their top corners are connected. Since each lifting deck 1 is relatively independent of each other, it is usually difficult to completely align adjacent lifting decks 1, and there will be a height difference between the two, and then leveling operations are required to ensure that the height difference between adjacent lifting decks 1 can be within a predetermined range. In order to ensure the overall accuracy of the hull deck, the height difference between adjacent lifting decks 1 after leveling should be less than 15mm, that is, the predetermined range of the height difference can be 0mm-15mm.

[0038] Preferably, Figure 1 and Figure 2 As shown, in the embodiment, first, each single lifting deck 1 needs to be constructed separately. Since the plate thickness of the lifting deck 1 is relatively thin, the lifting deck 1 is easily deformed during the construction process, so the single lifting deck 1 needs to be leveled. Specifically, preferably, in order to ensure the construction accuracy of the single lifting deck 1, the lifting deck 1 should be assembled in strict accordance with the installation and assembly sequence during the construction of each single lifting deck 1, that is, the lifting deck 1 should be assembled according to the assembly sequence of the installation drawing, and the lifting deck 1 should be welded strictly according to the welding sequence, that is, the lifting deck 1 should be welded according to the conventional principles of welding. In this way, the local flatness of each lifting deck 1 is ensured, and each part of the lifting deck 1 itself can be kept flat, while ensuring the overall flatness of the single lifting deck 1, and ensuring that the entire lifting deck 1 can be kept flat, so that it can be kept flat relative to the deck as a whole.

[0039] Preferably, Figure 1 and Figure 2 As shown in the embodiment, after each single lifting deck 1 is constructed, the single lifting decks 1 can be arranged in the ship length direction 2 and the ship width direction 3 to simulate the state of being loaded on a real ship, and then the first group of lifting decks 11 arranged in the ship width direction 3 are leveled, and then the first group of lifting decks 11 are leveled at the same time (the first group of lifting decks 11 is Figure 1The three lifting decks 1 arranged vertically on the far right). Specifically, after a single lifting deck 1 is leveled, a leveling process is required to keep the single lifting deck 1 flat relative to other single lifting decks 1, even if the height difference between each single lifting deck 1 in the first group of lifting decks 11 is less than 15mm. However, if all the lifting decks 1 are leveled as a whole in the same way as the leveling between two adjacent lifting decks 1, the cumulative error of the lifting decks 1 along the length direction 2 will gradually increase, and finally make the entire hull deck uneven. Therefore, the first group of lifting decks 11 in the ship width direction 3 can be leveled first and then leveled at the same time, and then the flatness data of the first group of lifting decks 11 can be used as a reference to extend to other groups of lifting decks 1.

[0040] Preferably, Figure 1 and Figure 2 As shown, in the embodiment, the first group of lifting decks 11 can be all the lifting decks 1 arranged in the same row along the ship width direction 3. Since the size of the hull in the ship width direction 3 is smaller than the size of the hull in the ship length direction 2, all the lifting decks 1 arranged in the same row along the ship width direction 3 can be selected as the first group of lifting decks 11, so that the number of lifting decks 1 is relatively small, avoiding a large amount of cumulative errors directly in this step. Among them, the number of the first group of lifting decks 11 can be the predetermined number of the production plan, that is, the number of lifting decks 1 that can be accommodated in the ship width direction 3 in the designed production plan of the hull. Preferably, the predetermined number of the production plan can be three in the embodiment.

[0041] Specifically, Figure 1 and Figure 2 As shown, in the embodiment, when the first group of lifting decks 11 arranged along the ship width direction 3 are leveled and leveled simultaneously, a separate site needs to be selected first to accommodate enough lifting decks 1, and after the three lifting decks 1 are leveled, the three lifting decks 1 are leveled simultaneously, i.e., the leveling process. In this process, it is necessary to control the flatness of the three lifting decks 1 in the ship width direction 3 (i.e., level the connected edges of the three lifting decks 1), so that the individual lifting decks 1 of the first group of lifting decks 11 are kept as flat as possible. Preferably, the leveling process is thermal leveling.

[0042] Preferably, Figure 1 and Figure 2As shown, in the embodiment, after the first group of lifting decks 11 arranged along the ship width direction 3 are leveled simultaneously, the data of the first group of lifting decks 11 in the ship length direction 2 are recorded. Although the individual lifting decks 1 of the first group of lifting decks 11 have been leveled and leveled, they are not completely flatly connected, so the flatness data of the first group of lifting decks 11 in the ship length direction 2 can be recorded, and then the specific height difference between each adjacent lifting deck 1 in the first group of lifting decks 11 can be recorded.

[0043] Specifically, Figure 1 and Figure 2 As shown, in the embodiment, the flatness data of the first group of lifting decks 11 in the ship length direction 2 is Figure 1 The data of the sides of the first group of lifting decks 11 in the ship length direction 2 also include the data of the sides of all single lifting decks 1 in the first group of lifting decks 11 in the ship length direction 2, and the height difference data between each adjacent two lifting decks 1.

[0044] Further, preferably, in one embodiment, in the process of obtaining the flatness data of the first set of lifting decks 11 in the ship length direction 2, a total station can be used to measure and record the flatness data of the first set of lifting decks 11 in the ship length direction 2. The total station, i.e., a total station type electronic distance meter, is a surveying and mapping instrument system integrating the horizontal angle, vertical angle, distance (slant distance, horizontal distance), and height difference measurement functions, which can record all the data of the first set of lifting decks 11 in the form of points by laser scanning, so that the flatness data of the first set of lifting decks 11 in the ship length direction 2 can be obtained.

[0045] Preferably, in another embodiment, in the process of obtaining the flatness data of the first lifting deck 11 in the ship's length direction 2, the flatness data of the first lifting deck 11 in the ship's length direction 2 can be measured and recorded in a template manner. That is, a wooden slat is attached to the side of the first lifting deck 11 in the ship's length direction 2, and the flatness data of the first lifting deck 11 in the ship's length direction 2 is recorded on the wooden slat by drawing lines. Specifically, the operator can use a brush to draw the line outline of the side of the lifting deck 1 in the ship's length direction 2 on the wooden slat, so as to record the flatness data of the first lifting deck 11 in the ship's length direction 2.

[0046] Preferably, in another embodiment, in the process of obtaining the flatness data of the first lifting deck 11 in the ship's length direction 2, the flatness data of the first lifting deck 11 in the ship's length direction 2 can be measured and recorded by profiling. That is, the side of the first lifting deck 11 in the ship's length direction 2 is profiled by using a metal plate, thereby recording the line contour of the side of the lifting deck 1 in the ship's length direction 2, and then obtaining the flatness data of the first lifting deck 11 in the ship's length direction 2.

[0047] Preferably, Figure 1 and Figure 2 As shown, in the embodiment, the flatness data of the first group of lifting decks 11 in the ship length direction 2 is used as a reference to adjust the flatness of other groups of lifting decks 1 arranged along the ship width direction 3. That is, when leveling other groups of lifting decks 1 arranged along the ship width direction 3 except the first group of lifting decks 11, the flatness data of the first group of lifting decks 11 in the ship length direction 2 can be used as a reference. Figure 1 The second lifting deck 12 (the second lifting deck 12 is Figure 1 The three lifting decks 1 arranged in the vertical direction in the middle and the third group of lifting decks 13 (the third group of lifting decks 13 is Figure 1 The number of the three lifting decks 1 arranged vertically on the leftmost side of the lifting deck 1 is the same as that of the first lifting deck 11. In the process of flatness adjustment, the leveling process is still performed first, and then the simultaneous leveling is performed. In the leveling process, the height difference between each adjacent lifting deck 1 in the other lifting decks 1 should be equal to the height difference between each adjacent lifting deck 1 in the first lifting deck 11. That is, Figure 2 As shown, the height difference between any adjacent lifting decks 1 in the second group of lifting decks 12 and the third group of lifting decks 13 is equal to the height difference between the adjacent lifting decks 1 in the first group of lifting decks 11 corresponding thereto in the transverse direction. And the height difference between the other groups of lifting decks 1 and the first group of lifting decks 11 is less than 15 mm. That is, Figure 2 As shown, the height difference between the second lifting deck 12 and the third lifting deck 13 and the first lifting deck 11 is less than 15 mm. In the leveling process, the leveling data of the first lifting deck 11 is used to simulate the leveling of other lifting decks 1, and the leveling operation is performed simultaneously on each group to ensure the overall flatness.

[0048] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for leveling a PCTC lifting deck, characterized in that: The leveling method of the PCTC lifting deck includes: Construction of individual lifting decks; Simulate the actual ship loading status and arrange the single lifting deck in the direction of the ship length and the ship width; The flatness of the first group of lifting decks arranged along the width of the ship is adjusted, including: a leveling step: making the height difference between each single lifting deck in the first group of lifting decks less than 15 mm; a leveling step: leveling the first group of lifting decks arranged along the width of the ship at the same time; Acquire the flatness data of the first group of elevating decks in the ship length direction, wherein the flatness data includes the height difference data between each two adjacent elevating decks in the first group of elevating decks; Taking the flatness data of the first group of elevating decks in the ship length direction as a reference, adjusting the flatness of other groups of elevating decks arranged along the ship width direction; In the process of adjusting the flatness of other groups of lifting decks arranged along the ship width direction based on the data of the first group of lifting decks in the ship length direction, the height difference between each adjacent lifting deck in the other groups of lifting decks is made equal to the height difference between each adjacent lifting deck in the first group of lifting decks.

2. The leveling method of the PCTC lifting deck according to claim 1, characterized in that: The first group of lifting decks is all the lifting decks arranged in the same row in the ship width direction.

3. The leveling method of the PCTC lifting deck according to claim 1, characterized in that: The leveling process is thermal leveling.

4. The leveling method of the PCTC lifting deck according to claim 1, characterized in that: In the process of obtaining the flatness data of the first group of lifting decks in the ship's length direction, a total station is used to measure and record the flatness data of the first group of lifting decks in the ship's length direction.

5. The leveling method of the PCTC lifting deck according to claim 1, characterized in that: In the process of acquiring the flatness data of the first group of lifting decks in the ship length direction, the flatness data of the first group of lifting decks in the ship length direction is recorded in a template manner.

6. The leveling method of the PCTC lifting deck according to claim 1, characterized in that: In the process of acquiring the flatness data of the first group of lifting decks in the ship's length direction, the flatness data of the first group of lifting decks in the ship's length direction is recorded by using a modeling method.

7. The leveling method of the PCTC lifting deck according to claim 1, characterized in that: In the process of adjusting the flatness of other groups of lifting decks arranged along the ship width direction based on the data of the first group of lifting decks in the ship length direction, the height difference between the other groups of lifting decks and the first group of lifting decks is made less than 15mm.

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