KR102044894B1

KR102044894B1 - Method for moving tower crane

Info

Publication number: KR102044894B1
Application number: KR1020130030519A
Authority: KR
Inventors: 유택희; 김상일; 장복익
Original assignee: 대우조선해양 주식회사
Priority date: 2013-03-21
Filing date: 2013-03-21
Publication date: 2019-12-02
Also published as: KR20140115670A

Abstract

The present invention provides a method for moving the tower crane 20 to the target position 15 without disassembly of the tower crane 20: A first step of binding the main components of the tower crane 20 to block the shaking (S10) ); A second step (S20) of raising the tower crane (20) to a nearby tower crane (20) and mounting it on the transporter (40); And a third step (S30) of reinstalling the tower crane 20 by moving the transporter 40 to the target position 15.
Accordingly, it is possible to prevent the deterioration of the production work efficiency by accurate relocation of the equipment, as well as to quickly and safely evacuate in case of emergency, thereby preventing equipment damage and safety accident.

Description

Method for moving tower crane

The present invention relates to a method of moving a tower crane, and more specifically, to prevent equipment damage and safety accidents in the event of an emergency, as well as to prevent the production work efficiency deterioration by accurate relocation of the tower crane to prevent equipment damage and safety accidents It relates to how to move.

The shipbuilding site is equipped with Goliath Crane and a number of Portal-Based Tower Cranes. The tower crane should be moved to a pre-set position when a typhoon is foreseen, when interference occurs when entering the T / Porter, or when the block design work is not supported.

As such, the movement of the portal base type tower crane occurs frequently, but there are limitations in carrying it to the current transporter. For example, when the mast height is 28 m or more, assembly and dismantling operations are inevitable. Accordingly, if a separate standard is prepared based on the technology related to tower crane movement, even higher tower cranes can be moved without assembling and dismantling.

As an example of a prior patent relating to the movement of the tower crane, Korean Patent Publication No. 1234896 includes determining whether there is a collision area that interferes with the movement of the crane from the starting point to the target point; Setting an avoidance point for the crane to avoid the interference area by using the traveling coordinates and the transverse coordinates of the vertices of the interference area when the interference area exists; And transmitting the traveling coordinates and the transverse coordinates of the set avoiding point to the crane. Accordingly, it is expected to reduce the work time and at the same time improve the safety of the work.

However, according to the above patent, it is difficult to exclude the risk of collision accidents due to unexpected interferences because the unmanned movement of the crane is the main point, and as a result, there is a case where the effect of shortening the working time or reducing the airborne is not shown.

1. Korean Patent Publication No.1234896 "Crane movement control method and crane movement control device" (published date: 2012. 7. 10.)

An object of the present invention for improving the conventional problems as described above, the tower crane that can prevent equipment damage and safety accidents to prevent the damage to the production work efficiency by accurate repositioning, as well as quick and safe evacuation in case of emergency To provide a way to move.

In order to achieve the above object, the present invention provides a method for moving a tower crane to a target position without disassembling the tower crane: a first step of binding the main components of the tower crane to block the shaking; A second step of raising the tower crane to a neighboring tower crane and mounting it on a transporter to bind the tower crane; And a third step of reinstalling the tower crane by moving the transporter to a target position.

In addition, according to the present invention, the first step is characterized in that the jib is fixed in the transport direction of the transporter and the trolley is moved to the cabin side to fix it.

Further, according to the present invention, the second step is characterized in that the rubber pad is installed on the friction surface of the tower crane and the transporter, the bottom of the tower crane is bound, and the top of the tower crane is bound.

According to the present invention, the lower binding step uses a sling belt and a lever block, and the upper binding step uses a racing wire and a turnbuckle.

In addition, according to the present invention, if the height of the mast is 30m or less, the second binding step may be omitted.

As described above, according to the present invention, it is possible to prevent the deterioration of the production work efficiency by accurate rearrangement, as well as to quickly and safely evacuate in the event of an emergency, thereby preventing equipment damage and safety accidents.

1 is a flowchart showing the main process of the method according to the invention
Figure 2 is a schematic diagram illustrating the movement path of the tower crane according to the present invention.
3 is a schematic diagram showing a preparation step of FIG.
4 is a schematic diagram showing the contact surface restraint step of FIG.
5 is a schematic diagram showing a lower restraint step of FIG.
6 is a schematic diagram showing an upper restraint step of FIG.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to a method of moving a tower crane to a target change location for working area support. In the construction of ships and offshore structures, a number of cranes are needed to lift heavy loads. According to the present invention, the lifting area is changed due to the change of the work area or the change of the work method, or when the transporter moves, it is possible to move to a safe place without natural interference such as a typhoon or to disassemble the tower crane to work without interference We present a method of transport using a transporter.

In the first step S10 according to the present invention, the main components of the tower crane 20 are bound to block the shaking. The main components of the tower crane 20 include a jib 25, a trolley 27, a weight ballast block, etc., in addition to the portal base 21 and the mast 23. By binding the main components of the tower crane 20 can prevent interference or collision accidents during the movement.

At this time, the first step (S10) is characterized in that the jib 25 is fixed in the moving direction of the transporter 40, the trolley 27 is moved to the cabin side to be fixed. The jib 25 is oriented in consideration of the direction in which the transporter 40 approaches the tower crane 20 to be moved. Pull the trolley 27 toward the cabin and lower the hook and restrain the weight ballast block using the sling belt 31 and the shackle. Maintain a state of about 1 ton load on the hook, lock the turning brake of the jib 25, and cut off the main power supply.

In the second step S20 according to the present invention, the tower crane 20 is raised to a nearby tower crane 20 and mounted on the transporter 40 to be bound. As shown in FIG. 2, the plurality of tower cranes 20 maintain the overlapping working radius, and maintain the overlapping state of the working radius even after moving to the set target position 15. If the tower crane 20 nearby is not available, a separate crane may be used.

At this time, the second step (S20) is provided with a rubber pad 45 on the friction surface of the tower crane 20 and the transporter 40 (S22), and bind the lower portion of the tower crane (20) (S24) , Binding the upper portion of the tower crane 20 (S26) is characterized. The first step (S22) is to arrange the anti-skid rubber pad 45 on the contact surface of the girder of the transporter 40 and the portal base 21 in accordance with the aggregate of the transporter 40, lifting the tower crane 20 Put up the center of gravity and then climb the transporter (40). The second step S24 is to fasten the shackle to the lug at the end of the transporter 40, connect the shackle and the lever block 32, and use the sling belt 31 to tighten the leg of the portal base 21. Winding and fastening with the lever block 32, winding the lever block 32 is fixed firmly. The third step (S26) is fastening the lug and the turnbuckle 34 at the end of the transporter 40, fastening the lacing wire 35 with the turnbuckle 34, winding the turnbuckle 34 to the laminating wire ( Firmly pinch 35).

Meanwhile, the lower binding step S24 uses a sling belt 31 and a lever block 32, and the upper binding step S26 uses a lacing wire 35 and a turnbuckle 34. Since a relatively small load (3 to 5 tons) is applied to the bottom binding of the tower crane 20, a sling belt 31 and a lever block 32 are used, whereas a relatively load is applied to the upper binding of the tower crane 20. Since the large (10 to 15 tons) lashing wire 35 is long, the tensile force is increased by using the turnbuckle 34.

In the third step S30 according to the present invention, the transporter 40 is moved to the target position 15 and the tower crane 20 is reinstalled. When the transporter 40 starts, it starts at low speed so that rapid acceleration does not occur, and the moving speed does not exceed 1 m / sec, and the road slope is within 3 degrees in the direction of travel and within 1 degree in the left and right directions. Drive. When the movement is completed, adjust the level of the portal base 21 to set the correct position, loosen the turnbuckle 34 to disassemble the lashing wire 35, release the lever block 32 to disassemble the sling belt 31, Lower the transporter 40 and remove the rubber pad 45 to leave the tower crane 20, and connect the main power supply to lower the hook and disengage the connection between the weight ballast block and the hook.

In this case, in the second step S20, when the height of the mast 23 is 30 m or less, the lower binding step S22 may be omitted. Even if only the first step (S22) and the third step (S26) is applied, there is no problem in the movement by the transporter 40.

On the other hand, the present invention is suitable for, but is not necessarily limited to, transporter of 14 ton tower crane (DWT1475, KH310), 16 ton tower crane (DWT1675).

It is apparent to those skilled in the art that the present invention is not limited to the described embodiments, and that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to belong to the claims of the present invention.

15: Target position 20: Tower crane
21: portal base 23: mast
25: jib 27: trolley
31: sling belt 32: lever block
33: Shackles 34: Turnbuckles
35: racing wire 40: transporter
45: rubber pad

Claims

In the method of moving the tower crane 20 to the target position 15 without dismantling the tower crane 20:
A first step (S10) of binding the main components of the tower crane 20 to block the shaking;
A second step (S20) of raising the tower crane (20) to a nearby tower crane (20) and mounting it on the transporter (40); And
The third step (S30) of reinstalling the tower crane 20 by moving the transporter 40 to the target position 15;
In the first step S10, the jib 25 is fixed in the moving direction of the transporter 40, and the trolley 27 is moved and fixed to the cabin side.
Lower the hook and restrain the weight ballast block using the sling belt 31 and the shackle,
The second step (S20) is to install a rubber pad 45 on the friction surface of the tower crane 20 and the transporter 40 (S22), bind the lower portion of the tower crane 20 (S24), tower Bind the upper portion of the crane 20 (S26),
The lower binding step (S24) uses a sling belt 31 and the lever block 32, the upper binding step (S26) uses a lacing wire 35 and a turnbuckle 34,
The moving speed does not exceed 1 m / sec, and the road slope is a method of moving the tower crane, characterized in that proceeding within 3 degrees in the direction of travel.

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