KR101763815B1

KR101763815B1 - Support apparatus for ship construction

Info

Publication number: KR101763815B1
Application number: KR1020150131100A
Authority: KR
Inventors: 장찬익
Original assignee: 삼성중공업(주)
Priority date: 2015-09-16
Filing date: 2015-09-16
Publication date: 2017-08-14
Also published as: KR20170033142A

Abstract

The present invention provides a table apparatus. The table device of the present invention includes a pin jig which is spaced apart at a predetermined interval to form a plurality of rows and columns and supports an object at an upper end thereof; A load measuring unit installed on each of the pin jigs to measure a load of an object acting on the pin jig; And a center of gravity calculating unit for calculating a center of gravity of the object based on the load data provided from the load measuring unit.

Description

[0001] The present invention relates to a supporting apparatus for ship construction,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a surface preparation apparatus, and more particularly, to a surface preparation apparatus for a ship, which enables various operations to be performed in a state in which various types of blocks are used.

Generally, a crane is a general term of a machine that can lift a heavy object by using power and move it horizontally, and it is classified as a crane, a mobile crane, a derrick, and a feeder.

The crane is divided into a form in which the crane itself is fixed on the ground or on the deck of the ship, and a self propelled crane mounted on the truck. The crane is fixed on the ground and is equipped with a mast or a boom, The derrick crane, which is used for lifting and unloading heavy objects, can be classified into Guy derrick, Stiffleg derrick, Ginpole derrick, Hammer-head crane, .

Conventional cranes can lift the hull block by using wire hooks and pull hooks to lift and unload the hull block at the site where the hull is to be dried. In particular, in lifting the hull block of the heavy load body, It should be salvaged under the condition that the center of gravity is not biased to any one part in proportion to the volume along the length of the front, back, or left and right sides of the block.

In other words, in the case of asymmetric type relative to the volume of the hull block, the lifting operation of the crane is performed under the condition that the center of gravity is not dependent on the length and the reference points of the center of gravity coincide with each other.

Generally, when the center of gravity of the hull block to be lifted is tilted at each towing point to be lifted, a large load is applied to the frame of the crane relatively. In the lifting of the overweight hull block at each point, , A safety accident such as a break in a wire rope out of the tolerance of the wire rope to be lifted or a deformation of the boom occurs.

As described above, it is important that the crane accurately calculate the center of gravity so that the hull block can safely be lifted.

However, until now, in calculating the center of gravity, the position of the lug was determined on the drawing based on the center of gravity information in the drawing modeling, and the position of the crane was determined in the field. Due to the excessive calculation time and the inaccuracy of the resultant value It was very difficult to judge or predict the hazards in the field lifting work.

Korean Patent Laid-Open No. 10-2008-0058586 (Published on June 26, 2008)

An object of the present invention is to provide a table apparatus capable of measuring the center of gravity of a hull block on pin jigs on which a hull block is placed for a ship drying operation.

An object of the present invention is to provide a table apparatus capable of verifying the center of gravity on modeling.

An object of the present invention is to provide a platform device capable of lifting a hull block in a stable posture so as to ensure safety of a crane and further improve workability of an operator.

The problems to be solved by the present invention are not limited thereto, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided an image forming apparatus including: pin jigs spaced apart at a predetermined interval to form a plurality of rows and columns; A load measuring unit installed on each of the pin jigs to measure a load of an object acting on the pin jig; And a center of gravity calculating unit for calculating a center of gravity of the object based on the load data provided from the load measuring unit.

The apparatus may further include a three-dimensional photographing unit that photographs the shape of the object in three dimensions.

The apparatus may further include a comparison / verification unit for substituting the center of gravity coordinates calculated by the center of gravity calculation unit into the shape of the object photographed by the three-dimensional photographing unit to verify the center of gravity on the three-dimensional modeling.

In addition, the load measuring device may include a load cell.

The center-of-gravity calculator may calculate an x-axis center of gravity (x (COG)) and a y-axis center of gravity (y (COG)) of the object on the table using Equation 1 below.

[Equation 1]

x (COG) = (a1 * x1) + (a2 * x2) ... (aN * xN) /(a1+a2...+aN)

(COG) = (a1 * y1) + (a2 * y2) (aN * yN) /(a1+a2...+aN)

Here, a1, a2, ..., aN are the measured weights of the pin jigs, x1, x2 ... xN are the x axis distance coordinates of each pin jig from the base reference point, and y1, y2, Axis coordinate of the y-axis, and N is a natural number.

According to the embodiment of the present invention, the center of gravity of the hull block to be lifted is measured in the field, so that the center of gravity on the modeling can be verified and the particular effect can be verified.

According to the embodiment of the present invention, the position of the lug is determined based on the actual center of gravity of the hull block placed on the pin jig, thereby securing the safety of the field lifting operation.

The effects of the present invention are not limited to the above-mentioned effects, and the effects not mentioned can be clearly understood by those skilled in the art from the present specification and the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a base plate for a ship according to an embodiment of the present invention; FIG.
Fig. 2 is a side view of the vessel drying apparatus shown in Fig. 1. Fig.
3 is a plan view of the vessel drying apparatus shown in Fig.
Fig. 4 is a reference diagram for explaining a center-of-gravity calculation process.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout the specification and claims. The description will be omitted.

FIG. 1 is a perspective view showing a vessel for drying a vessel according to an embodiment of the present invention, and FIGS. 2 and 3 are a side view and a plan view of the vessel drying apparatus shown in FIG. 1. FIG.

1 to 3, a vessel drying apparatus 10 includes a fin jig 100, a load measuring device 200, a center of gravity calculating unit 300, a three-dimensional photographing unit 400, 500).

The pin jigs 100 are installed on the upper surface of the work surface plate 20 to support a structure (hereinafter referred to as a hull block) 30. Here, the work surface plate 20 constitutes a basic frame for supporting the hull block 30 to provide work, and may be provided in the workplace.

The pin jigs 100 may be spaced apart from each other by a predetermined distance on the work base 20 according to the design drawing of the hull block 30 and may be installed to form a plurality of rows and columns. The respective heights can be set in accordance with the shape of the hull block 30.

For example, the pin jig 100 may include a body 110 and a support bar 120. The body 110 may be fixed to the work base 20 by welding or bolt fastening, and may be movable as required. The support bar 120 serves to support the bottom of the hull block 30 and is installed perpendicular to the body 110.

The support bar 120 can be installed to be elevated from the body 110 so as to adjust the height of contact with the hull block 30. In one example, the support bar 120 may be raised and lowered on the body 110 by a hydraulic device (not shown).

The load measuring device 20) may be installed on the support rod 120 of the pin jig 100. [ The load measuring device 200 measures the load of the hull block 30 applied to the support bar 120 in real time. For example, it is preferable that the load measuring device 20 be applied with a load cell which can easily and accurately measure the weight from a small amount of weight to a weight of a weight reaching a cowl. The load cell has a load cell element which generates a strain proportional to the stress, for example, twisting or warpage, depending on the load. The load cell element (not shown) is deformed by a load generated by a measurement object. The load cell element measures a strain amount generated by the strain gauge, which converts the amount of deformation to electrical resistance, The load of the hull block 30 applied to the hull 100 is measured.

The center of gravity calculating unit 300 calculates the center of gravity of the hull block 30 based on the load data supplied from the load measuring units 20).

Here, any one of the four corners of the working surface 20 is defined as a reference point C, and when viewed from the plane, assuming that the X-axis is the row direction and the Y-axis is the column direction about the reference point C .

The center of gravity calculation in the center of gravity calculating section 300 calculates the x axis center of gravity x (COG) and the y axis center of gravity y (COG) of the hull block on the surface plate 10. That is, when the load value measured at each of the pin jigs 100 is multiplied by the distance from the reference point C, the center of gravity is calculated by totaling the thus calculated values and dividing the total weight.

For example, the center of gravity calculating unit 300 calculates the center of gravity x (COG) of the hull block and the center of gravity y (COG) of the y-axis on the table 10 using Equation 1 below . The center of gravity of the hull block is the point at which the x-axis center of gravity (x (COG)) and y center (y (COG)) coordinates meet.

[Equation 1]

x (COG) = (a1 * x1) + (a2 * x2) ... (aN * xN) /(a1+a2...+aN)

(COG) = (a1 * y1) + (a2 * y2) (aN * yN) /(a1+a2...+aN)

Here, a1, a2 ... aN are the measured weights of the respective pin jigs, and x1, x2 ... xN are x-axis distance coordinates of each pin jig 100 from the base reference point C, y1, y2 ... yN Axis distance coordinates of each pin jig 100 at the base plate reference point C, and N is a natural number.

The three-dimensional photographing unit 400 includes a camera for photographing the hull block placed on the pin jig, which is located on the upper part of the work surface.

The comparison verifying unit 500 substitutes the center of gravity coordinates calculated in the center of gravity calculating unit with the shape of the hull block photographed by the three-dimensional photographing unit 400 and verifies the center of gravity on the designed three-dimensional modeling do.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: Pin jig 200: Load measuring device
300: center of gravity calculation unit 400:
500:

Claims

A pin jig spaced apart at a predetermined interval to form a plurality of rows and columns and supporting an object at an upper end thereof;
A load measuring unit installed on each of the pin jigs to measure a load of an object acting on the pin jig;
A center of gravity calculating unit for calculating a center of gravity of the object based on load data provided from the load measuring unit;
A three-dimensional photographing unit for three-dimensionally photographing the shape of the object; And
And a comparison verifying unit for substituting the center of gravity coordinates calculated by the center of gravity calculating unit with the shape of the object photographed by the three-dimensional photographing unit to verify the center of gravity on the three-dimensional modeling.

delete

The method according to claim 1,
Wherein the load measuring device includes a load cell.

The method according to claim 1,
Wherein the center-of-gravity calculator calculates an x-axis center of gravity (x (COG)) and a y-axis center of gravity (y (COG)) of the object on the table using the following equation (1).
[Equation 1]
x (COG) = (a1 * x1) + (a2 * x2) ... (aN * xN) /(a1+a2...+aN)
(COG) = (a1 * y1) + (a2 * y2) (aN * yN) /(a1+a2...+aN)
Here, a1, a2, ..., aN are the measured weights of the pin jigs, x1, x2 ... xN are the x axis distance coordinates of each pin jig from the base reference point, and y1, y2, Axis coordinate of the y-axis, and N is a natural number.