KR20140115670A

KR20140115670A - Method for moving tower crane

Info

Publication number: KR20140115670A
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: 2014-10-01
Also published as: KR102044894B1

Abstract

The present invention relates to a method for moving a tower crane (20) to a target position (15) without disassembling the tower crane (20), the method comprising: a first step (S10) of uniting main components of the tower crane (20) and blocking fluctuation; a second step (S20) of raising the tower crane (20) to a neighboring tower crane (20), loading and uniting the same into a transporter (40); and a third step (S30) of moving the transporter (40) to the target position (15) and reinstalling the tower crane (20). Accordingly, the present invention can prevent a decrease of efficiency of a production work with precise rearrangement of equipment, and is possible to quick and safe evacuation in an emergency, thereby preventing damage of the equipment and safety accident.

Description

Method for moving tower crane

The present invention relates to a method of moving a tower crane, and more particularly, to a tower crane capable of avoiding a reduction in production efficiency due to accurate equipment rearrangement and preventing equipment damage and safety accident by enabling quick and safe evacuation in case of an emergency. To a moving method of the apparatus.

There are a number of portal type tower cranes along with Goliath crane on the ship building site. The tower crane should be moved to a pre-set location when a typhoon occurs or interference occurs when the transporter (T / Porter) enters or the radius of the block supports the work.

In this way, the movement of the portal-type tower crane is frequently performed, but the transportation is limited to the current transporter. For example, when the mast height is 28 m or more, assembly and disassembly work is inevitable. Accordingly, if a separate standard is established based on the technology related to the movement of the tower crane, the higher tower crane can be moved without assembly and disassembly.

Korean Patent Registration No. 1234896, which is an example of a prior art patent relating to the movement of a tower crane, includes a step of judging whether or not a collision area in which a crane moves from a starting point to a target point exists; Setting a avoidance point for avoiding the interfering collision area of the crane using traveling coordinates and traverse coordinates of a vertex of the interfering collision area when the interfering collision area exists; And transmitting the running coordinates and traverse coordinates of the set avoidance point to the crane. Accordingly, it is expected that the working time can be shortened and the safety of the work can be improved.

However, according to the above-mentioned prior art, since the unmanned movement of the crane is a key, it is difficult to exclude the risk of collision caused by unexpected interference, and as a result, the effect of shortening the working time or reducing the airflow may not be exhibited.

1. Korean Patent Registration No. 1234896 entitled " Crane movement control method and crane movement control device "(Published on July 10, 2012)

It is an object of the present invention to solve the above-mentioned problems in the prior art, and it is an object of the present invention to provide a tower crane capable of preventing a reduction in production efficiency due to accurate equipment rearrangement, And to provide a method for moving the display device.

In order to achieve the above object, the present invention provides a method of moving a tower crane to a target position without disassembling the tower crane, comprising: a first step of binding main components of the tower crane to block shaking; A second step of pulling up the tower crane to a nearby tower crane and mounting the same on a transporter; And a third step of moving the transporter to a target position to reinstall the tower crane.

According to the present invention, in the first step, the jig is fixed in the moving direction of the transporter, and the trolley is moved to the cabin side and fixed.

According to the present invention, in the second step, a rubber pad is provided on the friction surface of the tower crane and the transporter, the lower portion of the tower crane is coupled, and the upper portion of the tower crane is connected.

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

According to the present invention, in the second step, when the height of the mast is 30 m or less, the lower binding step is omitted.

As described above, according to the present invention, it is possible to prevent a decrease in efficiency of production operation by accurately rearranging the equipment, and it is possible to quickly and safely evacuate in case of an emergency, thereby preventing equipment damage and safety accidents.

Figure 1 is a flow chart illustrating the main process of the process according to the invention
2 is a schematic diagram illustrating a movement path of a tower crane according to the present invention;
Fig. 3 is a schematic diagram showing the preparing step of Fig. 1
Fig. 4 is a schematic view showing the contact surface confining step of Fig. 1
Fig. 5 is a schematic view showing the lower constraining step of Fig. 1
Fig. 6 is a schematic view showing the upper confining step of Fig. 1

Hereinafter, 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 changing position for work area support. In the drying of ships and offshore structures, a large number of cranes are installed in areas where cranes are needed to lift heavy objects. The present invention is applicable to a place where the lifting position is changed or the transporter is moved due to a change of the working area or a change of working method, or when a natural disaster such as a typhoon occurs, We propose a moving method using a transporter.

In the first step S10 according to the present invention, main components of the tower crane 20 are bound to block the shaking motion. The main components of the tower crane 20 include a portal base 21 and a mast 23 as well as a jib 25, a trolley 27, a weight ballast block, and the like. Tie the main components of the tower crane 20 to prevent interference or collision while moving.

The first step S10 is characterized in that the jib 25 is fixed in the moving direction of the transporter 40 and the trolley 27 is moved to the cabin side and fixed. The jib 25 is oriented in consideration of the direction in which the transporter 40 approaches the tower crane 20 to be moved. After the trolley 27 is pulled toward the cabin, the hook is lowered and restrained with the weight ballast block using the sling belt 31 and the shackle. The main power supply is shut off after locking the swing brake of the jib 25 while maintaining a state in which the hook is loaded with about one ton.

In the second step S20 according to the present invention, the tower crane 20 is pulled up to a nearby tower crane 20 and mounted on the transporter 40 for binding. As shown in FIG. 2, a plurality of tower cranes 20 keep the working radius in a superimposed manner and maintain the overlapped state of the working radius even after moving to the set target position 15. If a nearby tower crane 20 is not available, a separate crane may be utilized.

In the second step S20, a rubber pad 45 is installed on the friction surface of the tower crane 20 and the transporter 40 (S22), the lower portion of the tower crane 20 is coupled (S24) , And binding the upper portion of the tower crane (S26). The first step S22 is to place the anti-slip rubber pads 45 on the contact surface between the girder of the transporter 40 and the portal base 21 in alignment with the aggregate of the transporter 40 and lift the tower crane 20 And the transporter 40 is put on the back. In the second step S24, the shackle is fastened to the lug at the end of the transporter 40, the shackle is connected to the lever block 32, and the leg of the portal base 21 is fastened using the sling belt 31 And the lever block 32 is wound around the lever block 32 to secure the lever block 32 firmly. The third step S26 is to tighten the lug at the end of the transporter 40 with the turnbuckle 34 and tighten the lashing wire 35 with the turnbuckle 34 and wind the turnbuckle 34 to the lashing wire 35) is firmly attached.

The lower binding step S24 uses the sling belt 31 and the lever block 32 and the upper binding step S26 uses the lashing wire 35 and the turnbuckle 34. [ A relatively small load (3 to 5 tons) acts on the lower binding of the tower crane 20 so that the sling belt 31 and the lever block 32 are used while the upper binding of the tower crane 20 has a relatively load Since the length of the large (10 to 15 tons) lasing 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 to re-install the tower crane 20. At the start of the transporter (40), the vehicle travels at a low speed so as not to cause rapid acceleration, the traveling speed does not exceed 1 m / sec, the road gradient is within 3 degrees in the traveling direction, Drive. When the movement is completed, the level of the portal base 21 is adjusted to set the correct position, the turnbuckle 34 is loosened, the lashing wire 35 is disassembled, the lever block 32 is loosened to disassemble the sling belt 31, The transporter 40 is lowered, the rubber pads 45 are separated from the tower crane 20, the main power source is connected to lower the hook, and the connection between the weight ballast block and the hook is broken.

In this case, if the height of the mast 23 is 30 m or less, the second binding step S22 may be omitted. Even if only the first step S22 and the third step S26 are applied, the movement by the transporter 40 is not infeasible.

Meanwhile, the present invention is suitable for, but is not limited to, transporting 14 ton tower cranes (DWT 1475, KH 310), 16 ton tower cranes (DWT 1675).

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It is therefore intended that such variations and modifications fall within the scope of the appended claims.

15: Target location 20: Tower crane
21: portal base 23: mast
25: Jib 27: Trolley
31: Sling belt 32: Lever block
33: Shackle 34: Turnbuckle
35: Lashing wire 40: Transporter
45: Rubber pads

Claims

A method of moving a tower crane (20) to a target location (15) without dismantling the tower crane (20)
A first step (S10) of binding main components of the tower crane (20) to block the shaking motion;
A second step (S20) of pulling up the tower crane (20) to a neighboring tower crane (20) and loading and binding the tower crane (20) on the transporter (40); And
And a third step (S30) of moving the transporter (40) to the target position (15) and reinstalling the tower crane (20).

The method according to claim 1,
Wherein the first step (S10) fixes the jib (25) in the moving direction of the transporter (40), and moves the trolley (27) to the cabin side to fix the tower crane.

The method according to claim 1,
In the second step S20, a rubber pad 45 is installed on the friction surface of the tower crane 20 and the transporter 40 (S22), the lower portion of the tower crane 20 is connected (S24) A method of moving a tower crane, comprising the step of binding (S26) an upper portion of a crane (20).

The method of claim 3,
Wherein the lower binding step S24 uses the sling belt 31 and the lever block 32 and the upper binding step S26 uses the lashing wire 35 and the turnbuckle 34. [ How to move.

The method of claim 3,
The second step S20 is to skip the bottom binding step S22 if the height of the mast 23 is 30 m or less.