KR200479690Y1 - Crane for interal inspection and repairing of ship - Google Patents

Abstract

The present invention relates to an inner inspection and repair crane which can be used for inspecting and repairing the interior of a large ship such as a container ship, a container ship, an LNG carrier, etc., and is equipped with a cradle mounted on a central portion of a large ship or a warehouse, A first link provided between the first link and the second link to actuate the second link, and a second link provided between the second link and the third link, And a second cylinder provided between the links to actuate the third link, so that as the angle of the joint becomes narrow, the length of the moment can be increased and the weight can be maintained to reduce the capacity of the supply power .

Description

[0001] DESCRIPTION [0002] Crane for inspection and repair in ships and warehouses [

The present invention relates to a crane for inspecting and repairing a ship and a warehouse, and more particularly, to an internal inspection and repair crane that can be used for inspecting and repairing a large-sized ship such as a container ship or an LNG carrier.

In general, natural gas is transported in the form of liquefied natural gas (LNG), which is transported in the form of gas through land or sea gas pipelines, and is stored in the LNG transport and transported to a remote destination.

The ship carrying LNG is largely of the Moss type and the membrane type. The Morse type LNG ship has a shape in which more than half of the whole sluice type hold cargo protrudes to the outside of the ship. LNG ships have a form in which a membrane type cargo hold is formed inside the vessel or only a part of the membrane type cargo hold is projected to the outside of the vessel.

In the case of membrane type LNG carriers, most or all of the cargo holds are constructed inside the ship and the rectangular shape is used as the basic structure. Therefore, more LNG can be transported than the Morse type and the influence of wind can be minimized. It is evaluated as excellent.

Since these LNG carriers store and transport LNG in a liquefied state, one of the most important ones is the heat shield to the outside. To this end, an insulating panel, which acts as a secondary barrier, is bonded to the inside of the cargo hold, . The heat insulating panel of the secondary barrier is attached by the manual operation of the operator. In other words, place and fix the Insulation Panel (IP) on the attachment equipment, and then move the insulation panel up, down, left, and right to fit the stud bolt to the attachment point. Then, before fixing the gap and the step difference, the bolt is fixed to the wall. After the heat insulating panel is separated from the attaching equipment, the gap and the step difference are adjusted to fasten the stud bolt.

Such vessels such as container ships and LNG carriers regularly install scaffolds for internal inspection and repair and inspect and repair workers through scaffolds.

Since the scaffold is installed manually by inspecting and repairing the inside of large ships and warehouses, it takes a lot of installation work time and there is no separate safety device. Therefore, there is a risk of a safety accident caused by a disaster such as a fall during work And it takes a long period of time to dismantle the scaffold after completion of the inspection and maintenance work, resulting in a problem of increasing manufacturing and inspection costs.

An example of a technique for solving such a problem is disclosed in the following Patent Document.

That is, the following Patent Document 1 discloses a nuclear reactor having a support portion disposed at an upper portion of a reactor, an upper arm positioned at a lower end portion of the support portion so as to be adjustable in length in a longitudinal direction, A lower arm connected to the joint and configured to be able to adjust the length in the longitudinal direction, a lower arm connected to the lower end of the upper arm, a lower arm connected to the joint, And a work device driving part for connecting the lower arm and the work device and rotating and tilting the work device.

As shown in Fig. 1, a base frame is integrally fastened and fixed in the middle of a shaft vertically installed in a spherical tank. The base frame is formed to have a certain length on the left and right sides of the base frame, And the other end is a movable frame on which a user is boarded and is vertically moved about a hinge according to a working position, and is fastened and fixed independently to the outer periphery of the moving frame and the hooking ring formed at the upper end of the shaft, respectively A first rope pulley and a second rope pulley which come close to and away from each other in accordance with the vertical position of the work table, a rope connected to the bobbin at one end and to the first rope pulley and the second rope pulley, A drive motor that causes the work table to be rotated up and down to the work position while winding or unwinding. That is described for the upper and lower rotating work table apparatus of the prefabricated scaffolding system for internal inspection and maintenance of the spherical tank.

Korean Registered Patent No. 10-0535627 (registered on December 02, 2005) Korean Registered Patent No. 10-0564721 (Registered on Mar. 21, 2006)

However, in the conventional art as described above, there is a problem that the weight of the moment arm of the rotation shaft decreases as the angle of the crane joint decreases.

Further, in the conventional art, since the crane can be moved only in a specific direction, there is a problem that the working area of the occupant is limited.

The object of the present invention is to solve the above-mentioned problems, and it is an object of the present invention to provide a method and apparatus for inspecting and repairing vessels and warehouses that reduce the installation time and cost of a work table for regular internal inspection and repair of vessels such as container ships and LNG carriers A crane for a crane.

Another object of the present invention is to provide a crane for inspecting and repairing ships and warehouses which can expand the working area of the operator.

Another object of the present invention is to provide a vessel and a warehouse interior inspection and repair crane that reduce the driving capacity for driving the crane.

In order to achieve the above object, according to the present invention, a crane for inspecting and repairing a ship or a warehouse is a crane that can be used for inspecting and repairing a large ship or a warehouse, A first link provided between the first link and the second link to actuate the second link, a second link provided between the first link and the second link, And a second cylinder provided between the second link and the third link to actuate the third link.

The present invention also provides a crane for internal inspection and repair according to the present invention, comprising: a first auxiliary link provided between the first link and the second link for limiting an operation range of the second link; And a second auxiliary link provided between the first link and the second link to limit an operation range of the third link.

The present invention also provides a crane for internal inspection and repair according to the present invention, comprising: a first slider guide provided on the second link for guiding sliding of the first sub link; and a second slider guide provided on the third link for guiding sliding of the second sub link And a second slider guide for guiding the second slider.

Further, in the internal inspection and repair crane according to the present invention, the joint is operated by a hydraulic motor or an electric motor, and the first link is rotatably held at 360 degrees.

Further, in the inner inspection and repair crane according to the present invention, a basket for mounting inspection equipment or an operator is mounted on the tip of the third link.

Further, in the inner inspection and repair crane according to the present invention, the pair of the second link and the third link are symmetrically arranged about the first link.

Further, in the internal inspection and repair crane according to the present invention, the third link may be formed in a telescopic structure so that the overall length of the third link is variable.

As described above, according to the present invention, according to the inspection and repairing cranes for ships and warehouses, by providing the auxiliary link and the slider structure, the weight can be maintained by increasing the length of the moment as the angle of the joint is narrowed An effect that the capacity of the supply power can be reduced can be obtained.

Further, according to the present invention, the inspection and repair cranes are provided at the end of the crane, and the inspection equipment or the basket is provided to the operator so that the operator can work while maintaining safety.

Further, according to the present invention, the inspection and repair cranes for ships and warehouses are provided with joints capable of rotating 360 degrees, so that the work area of the operator can be expanded.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a structural view of a first embodiment of a crane for internal inspection and repair according to the present invention;
FIG. 2 is a view for explaining the operation of the internal inspection and repair crane shown in FIG. 1,
3 is a configuration diagram of a second embodiment of the internal inspection and repair crane according to the present invention,
4 is a configuration diagram of a third embodiment of the internal inspection and repair crane according to the present invention.

The above and other objects and novel features of the present invention will become more apparent from the description of the present specification and the accompanying drawings.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In the description of the present invention, the same parts are denoted by the same reference numerals, and repetitive description thereof will be omitted.

≪ Example 1 >

The structure and operation of the first embodiment of the inner inspection and repair crane according to the present invention will be described with reference to Figs. 1 and 2. Fig.

FIG. 1 is a block diagram of a first embodiment of an internal inspection and repair crane according to the present invention, and FIG. 2 is a view for explaining an operation of the internal inspection and repair crane shown in FIG.

As shown in Fig. 1, the inner inspection and repair crane according to the present invention is, for example, a crane that can be used for inspection and repair of a large ship or a warehouse, and is mounted at the center of the ceiling of the large ship or warehouse A first link 30, a second link 40 and a third link 50, which are sequentially connected to the joint, and a second link 40, A first cylinder 60 provided between the first link 30 and the second link 40 to operate the second link 40 and a second cylinder 40 provided between the second link 40 and the third link 30, And a second cylinder (70) provided for operating the third link (30).

The basket (80) for mounting inspection equipment or an operator is mounted on the tip of the third link (50).

2, the joint 20 is attached to the ceiling portion of the tank 100 for storing LNG, and the joint 20 is mounted in the mount 10, And keeps the first link 30 rotatable 360 degrees. That is, one end of the first link 30 is rotatably coupled by the joint 20 at a substantially central portion of the ceiling of the tank 100.

One end of the second link 40 is vertically movably coupled to the other end of the first link 30 and one end of the third link 50 is vertically coupled to the other end of the second link 40 And a basket is mounted on the other end of the third link (50).

The first cylinder 60 is fixed to the first link 30 and the second link 40 is moved upward and downward relative to the first link 30 in FIG. Direction.

The second cylinder 70 is fixed to the second link 40 and the third link 30 is moved relative to the second link 40 in FIG. Leftward and rightward.

The first cylinder 60 and the second cylinder 70 as described above are actuated by pneumatic or hydraulic pressure and adopts a structure capable of controlling the operation remotely by an operation panel carried by the operator. Such a remote control of the cylinder can be easily realized by a common technique, so a detailed description thereof will be omitted.

According to the present invention, a first auxiliary link 35 is provided between the first link 30 and the second link 40 to limit the operation range of the second link 40, A second auxiliary link 45 is provided between the second link 40 and the third link 50 to limit the operation range of the third link 50. [

The second link 40 is provided with a first slider guide 42 to guide sliding of the first auxiliary link 35 and a second slider guide 52 is provided on the third link 50, Thereby guiding the sliding of the second auxiliary link 45.

By providing the first auxiliary link 35, the first slider guide 42, the second auxiliary link 45 and the second slider guide 52 as described above, the first cylinder 60 and the second cylinder The second link 40 and the third link 50 can be prevented from departing from the predetermined range by restricting the operation range of the second link 70 and the third link 50. [

In other words, according to the present invention, in the existing crane system, both ends of the cylinder are fixed, but by providing the first and second auxiliary links and the first and second cylinders, one end of the cylinder is slid and the angle of the joint is small As the end of the cylinder is moved away from the center of rotation according to the load, the length of the moment arm between the center of rotation and the cylinder is lengthened to increase the rotational force.

 Next, operation of the internal inspection and repair crane according to the present invention will be described with reference to FIG.

FIG. 2 illustrates a structure in which the cradle 10 is installed at the center of the ceiling of the tank 100 for storing the LNG, but the present invention is not limited to this, and can be applied to inspection and repair of the inner space of a large- Do.

2, an example of a process in which an operator checks the inside of the tank 100 by boarding the basket 80 will be described.

First, when inspecting the ceiling of the tank 100, as shown in FIG. 2A, the rods of the first cylinder 60 and the second cylinder 70 are controlled to be drawn out by a predetermined length.

2 (b), when the upper side surface of the tank 100 is inspected, the rod of the first cylinder 60 is pulled downward so that the second link 40 faces downward And the rod of the second cylinder 70 is drawn out to the left so that the third link 50 is moved to the left.

The operation of the first cylinder 40 and the second cylinder 50 is realized, for example, by operating an operation panel of an operator aboard the basket 80. [

2 (c), when the side surface of the tank 100 is inspected, the rod of the first cylinder 60 is further pulled out to the lower portion so that the second link 40 is moved downward And the rod of the second cylinder 70 is further pulled toward the left side so that the third link 50 is moved toward the left side.

2 (d), by controlling the operation of the first cylinder 40 and the second cylinder 50 as described above, the lower side of the tank 100 is also checked by the basket 80 Can be moved.

Since the drawing range of the rods of the first cylinder 40 and the second cylinder 50 as described above is limited by the first auxiliary link 35 and the second auxiliary link 45, You can work safely.

≪ Example 2 >

The structure of the second embodiment of the inner inspection and repair crane according to the present invention will be described with reference to Fig.

3 is a configuration diagram of a second embodiment of the internal inspection and repair crane according to the present invention.

Since the structure of the link and the cylinder in the second embodiment is the same as that in the first embodiment, repetitive description will be omitted.

3, the second link 40, the third link 50, the first cylinder 60, the second cylinder 70, the basket 80, and the like are provided in the second embodiment, And a pair of symmetrical pairs are provided around the first link 30.

3, the second link 40, the third link 50, the first cylinder 60, the second cylinder 70, the basket 80, and the like are provided as a pair, The operator can use the crane at the same time, so that the internal inspection and repair of the tank 100 can be efficiently realized.

In the description of the embodiment, the structure in which two workers are aboarded has been described. However, the present invention is not limited thereto, and the present invention is also applicable to a structure in which three or four workers are mounted on each basket.

≪ Example 3 >

The structure of the third embodiment of the inner inspection and repair crane according to the present invention will be described with reference to FIG.

4 is a configuration diagram of a third embodiment of the internal inspection and repair crane according to the present invention.

In the third embodiment, the structure of the third link 50 is different from that of the first embodiment, and the other structures are the same, and thus repetitive description of the same parts is omitted.

In the third embodiment, the third link 50 is formed in a telescopic structure for precise positional movement in a structure equipped with a crane according to the present invention, so that the overall length of the third link is variable.

That is, as shown in FIG. 4, the third link 50 is provided with a rod 55 which slidably extends therein.

By providing the rod 55 as described above, the worker on the basket 80 can precisely move to a desired position. Such a structure of the rod 55 can be easily realized by applying the structure of the cylinder to the structure of the third link 50 as described above.

Although the embodiments of the present invention have been described in detail with reference to the above embodiments, it is to be understood that the present invention is not limited to the above embodiments and that various changes and modifications may be made without departing from the scope of the present invention.

According to the present invention, it can be applied to a crane capable of reducing the capacity of supply power by maintaining the weight according to the inspection and repairing crane inside the ship and the warehouse.

10: Cradle
20: Joint
30: First link
40: second link
50: Third link
60: first cylinder
70: second cylinder

Claims (7)

As a crane that can be used for inspecting and repairing the inside of a large ship or a warehouse,
A cradle mounted in the center of the ceiling of the large vessel or warehouse,
A joint mounted on the cradle and rotatable,
A first link sequentially connected to the joint, a second link and a third link,
A first cylinder provided between the first link and the second link to actuate the second link,
A second cylinder provided between the second link and the third link to actuate the third link,
A first auxiliary link provided between the first link and the second link to limit an operation range of the second link,
A second auxiliary link provided between the second link and the third link to limit the operation range of the third link,
A first slider guide provided on the second link for guiding the sliding of the first sub link;
And a second slider guide provided on the third link for guiding the sliding of the second auxiliary link. delete delete The method according to claim 1,
Wherein the joint is operated by a hydraulic motor or an electric motor and maintains the first link rotatable 360 degrees. The method according to claim 1,
Wherein a basket for mounting inspection equipment or an operator is mounted on the tip of the third link. The method according to claim 1,
And a pair of the second link and the third link are provided symmetrically about the first link. The method according to claim 1,
And the third link is formed in a telescopic structure so that the total length of the third link is variable.

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