JPH0710072A - Method for carrying out crankshaft of diesel main engine in engine room of ship - Google Patents

Abstract

PURPOSE:To efficiently carry out a crankshaft by suspending to lower the crankshaft on a frame to be set on the rails, moving the crankshaft to the cargo hold along the rails through the frame, and carrying the crankshaft outside of the hull by making use of the hatch of the cargo hold. CONSTITUTION:Only the suspended crankshaft 9 is lowered and loaded on the rails 18 through a frame 21, the chains 14 are removed, and the crankshaft 9 is moved long the rails 18 while being loaded on the frame 21, and located in a cargo hold 15 after passing an opening 17 in a bulkhead 16. Because a head part 8 is left in the suspended condition, a pillar is vertically provided at an appropriate position between the head part 8 and a base plate 10 to secure the safety. Then, at this position, the crankshaft 9 on the rails 18 is suspended by a crane by making use of a hatch 22 of the cargo hold 15 and carried outside of the hull 1 while leaving the frame 21 behind.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for unloading a crankshaft of a diesel main engine used in a marine engine room for replacing or repairing the crankshaft of the diesel main engine.

[0002]

2. Description of the Related Art When it is necessary to replace or repair the crankshaft of a diesel main engine in an engine room in a ship such as a commercial ship, conventionally, as shown in FIG. The casing 3 provided on the engine room 2 is provided with an opening 6 corresponding to the doorway 5 to the engine room 2 provided on the upper deck 4, and the diesel engine of the engine room 2 is further provided from the opening 6. Various outfittings located between the main engine 7 are temporarily removed. In this state, as shown in FIG. 4B, the diesel main engine 7 is provided with a head portion 8 including a cylinder, a frame supporting the cylinder, and the like.
The crank shaft 9 and the base plate 10 are disassembled, and the head portion 8 and the crank shaft 9 are lifted by a chain block (not shown) using separate hanging pieces 11 and 12 and chains 13 and 14, and further, Hanging piece 12 for hanging the crankshaft 9
The crankshaft 9 is moved while changing the position to the entrance / exit 5 side, and the crankshaft 9 is carried out of the hull 1 through the entrance / exit 5 and the opening 6 by a crane and loaded on the work boat.

[0003]

However, according to the conventional method, the crankshaft 9 is moved to the doorway 5 side while the crankshaft is suspended and the hanging piece 12 is replaced, and the crankshaft 9 is carried out of the hull 1. , The suspended head part 8
Is directly above the crankshaft 9, the head portion 8 interferes with hoisting the crankshaft 9, so it is necessary to move the head portion 8 laterally after hoisting it before hoisting the crankshaft. At the same time, in order to move the crank shaft in the direction of the doorway 5 after lifting it, it is necessary to use human sea tactics by many workers for operations such as changing the chain and changing the posture of the crank shaft. It is difficult to make detailed adjustments and all the outfittings that are located in the movement path of the crankshaft 9 and the head 8 must be removed, so much work is required for incidental work including restoration work. There is a problem.

Therefore, according to the present invention, there is no need to move the crankshaft sideways while lifting the crankshaft by replacing the hanging piece or finely operating the chain block.
Further, it is an object of the present invention to provide a diesel main engine crankshaft unloading method that enables the crankshaft to be efficiently carried out even if the head portion is directly above the crankshaft, and that the auxiliary work can be carried out in a reduced amount. To do.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a partition wall for partitioning an engine room and a cargo hold adjacent to the engine room, in which an opening of a required size is formed in advance. , The diesel main engine in the engine room is disassembled into a head portion, a crank shaft, and a base plate so that the head portion and the crank shaft are temporarily lifted separately, and then the cargo is opened by penetrating the opening from above the base plate. A rail is laid so that it extends into the hold, and then the above-mentioned crankshaft that has been lifted is hung and placed on the rail via a pedestal, and the crankshaft is placed along the rail with the cradle in the cargo hold. After the moving position, the crankshaft is carried out by the crane through the hatch of the cargo hold to the outside of the hull.

[0006]

[Function] The crankshaft is temporarily lifted right above, then hung down on the pedestal on the rail installed and laid, and moved to the cargo hold along the rail, and the hatch of the cargo hold is used. It can be carried out. Thus, the crankshaft only needs to be lifted and then hung down, so that the crankshaft can be handled even when the head portion is still lifted above the crankshaft. Further, since the restoration work only needs to close the opening of the partition wall between the engine room and the cargo hold, incidental work is reduced.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show an embodiment of the present invention. In a ship similar to that shown in FIG. 4, the crankshaft 9 constituting the diesel main engine 7 in the engine room 2 is replaced or repaired. Before landing in the engine room 2
An opening 17 having a size that allows the crankshaft 9 of the diesel main engine 7 to pass therethrough is provided at a required position of a partition wall 16 that partitions the cargo hold 15 adjacent to the bow side of the engine room 2. The diesel main engine 7 is disassembled into a head portion 8, a crankshaft 9 and a base plate 10, the base plate 10 is left as it is, and the head portion 8 is fixed to the lower surface of the upper deck 4 which is the ceiling of the engine room 2. Chain 13 hung on the hanging piece 11
After hanging up with a chain block (not shown),
Crankshaft 9 by chain 14 hung on hanging piece 12
And hang it on the chain block to a position just above. In this case, the head portion 8 is provided with two holes 8a penetrating in the vertical direction, the chain 14 for hanging the crankshaft 9 is hung from the hanging piece 12 through the hole 8a, and the crankshaft 9 is provided directly below the head portion 8. The chain 14
I will hang it with.

In this state, a pair of left and right rails 18 drawn through the openings 17 of the partition wall 16 are laid on the base plate 10 of the diesel engine 7, and the rails 18 are extended into the cargo hold 15. It is laid via the support base 20 as appropriate. As shown in FIG. 3, a large number of steel balls 19 are rotatably arranged on the upper surface of the rail 18 so as not to come off in the width direction of the rail 18. Then, only the crankshaft 9 that has been lifted is hung down and placed on the rail 18 via the pedestal 21, and the chain 14 is removed. Then, the crankshaft 9 is placed on the pedestal 21 and the rail 18 is mounted. Along the wall of the partition wall 16 and is moved through the opening 17 of the partition wall 16 to be positioned inside the cargo hold 15. When the crankshaft 9 is mounted on the pedestal 21 on the rail 18, the head portion 8 is kept in a suspended state, so that the column 23 is erected at an appropriate position between the head portion 8 and the base plate 10. It is good to install it to ensure safety. Next, at this position, using the hatch 22 of the cargo hold 15, the crankshaft 9 on the rail 18 is lifted by a crane leaving the frame 21 and carried out of the hull 1.

On the other hand, when the new crankshaft 9 or the repaired crankshaft 9 is carried into the engine room 2, the crane is placed on the rail 18 in the cargo hold 15 in the reverse order of the above-mentioned procedure. The crankshaft 9 is hung down on the pedestal 21, and then the crankshaft 9 is moved along with the pedestal 21 into the engine room 2 along the rail 18, and is temporarily hung up to remove the pedestal 21 and the rail 18. After that, the crank shaft 9 and the head portion 8 are sequentially hung on the base plate 10 to be assembled.

As described above, in the present invention, the partition wall 16 for partitioning the engine room 2 and the cargo hold 15 adjacent to the engine room 2 is provided with the opening 17, and the base plate 10 of the diesel engine 7 is passed through the opening 17 to the cargo. A rail 18 is provided so as to extend into the hold 15, and the crankshaft 9 is attached to the pedestal 2
Cargo hold 15 along rail 18 through 1
After moving to, the hatch 22 of the cargo hold 15 was used to carry it out of the hull 1.
There is no need for an operation of suspending the crank shaft 9 and moving the suspension piece 12 or moving the head portion 8 laterally for the purpose of moving the crank shaft 9, and various outfitting equipments in the movement route. There is no need for work to remove the item. Therefore, even after the crankshaft 9 is carried into the engine room 2, it is only necessary to remove the rail 18 and close the opening 17, and unlike the conventional work, the work of restoring the outfittings and the like is unnecessary. Therefore, it is possible to significantly reduce the amount of incidental work involved in the replacement of the crankshaft 9 or the entire repair work.

The present invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

[0013]

As described above, according to the diesel engine crankshaft unloading method for a ship engine room of the present invention, an opening is provided in advance in the partition wall between the engine room and the cargo hold in front of the diesel engine. Is divided into a head portion, a crank shaft, and a base plate, and the head portion and the crank shaft are temporarily suspended, and a rail is laid through the opening between the base plate and the cargo hold in the engine room. Since the crank shaft is hung on the cradle set above, the crank shaft is moved along the rail to the cargo hold via the gantry so that it can be transported to the outside of the hull using the hatch of the cargo hold. Without changing the hanging piece in the engine room and moving the crankshaft, or moving the head sideways to move the crankshaft, The rank shaft can be carried out efficiently, and therefore the work of removing the fittings in the moving route is not required, and the restoration work to be carried out after the crank shaft is carried in becomes simple, and the crank shaft can be replaced or repaired. It has an excellent effect that the amount of incidental work required for the whole can be significantly reduced.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of a method for carrying out a diesel main engine crankshaft in a ship engine room according to the present invention.

FIG. 2 is a view taken along the line II-II in FIG.

FIG. 3 is an enlarged sectional view of a rail.

FIG. 4 shows an example of a conventional method, and (A) and (B) are schematic diagrams showing work procedures.

[Explanation of symbols]

 1 Hull 2 Engine Room 7 Diesel Main Engine 8 Head 9 Crankshaft 10 Base Plate 15 Cargo Hold 16 Bulkhead 17 Opening 18 Rail 21 Stand 22 Hatch

Claims (1)

[Claims] 1. A diesel engine in the engine room is provided with a head part, a crankshaft, and a base plate in a state in which an opening of a required size is previously formed in a partition wall that separates the engine room and a cargo hold adjacent to the engine room. To disassemble the head part and the crankshaft separately, and then lay a rail so as to extend into the cargo hold through the opening from above the base plate, and then lift the rail. The placed crankshaft is hung and placed on the rail via the gantry, and the crankshaft is moved to the inside of the cargo hold along the rail via the gantry. A method for unloading a diesel main engine crankshaft in a ship engine room, characterized in that it is carried out of the hull through a hatch.