JP2003300496A - Long size shaft receiving stand and carrying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a long size shaft receiving stand and carrying device for carrying a long size shaft without applying unreasonable force to the long size shaft. <P>SOLUTION: An inclinometer 22 is installed on a propeller shaft 12. A control part 34 controls motor-driven cylinders 38, 38, etc., of respective carriages 20, 20, etc., on the basis of information for indicating an inclination and the inclining direction of a present propeller shaft 12 outputted from the inclinometer 22, and controls a height position of respective bolster members 44, 44, etc., so that the inclination of the propeller shaft 12 becomes 0. The control part 34 controls the motor-driven cylinders 38, 38, etc., of the respective carriages 20, 20, etc., so as to carry the shaft 12 horizontally while maintaining the reference height H. That is, the control part controls a vertical position of the bolster members 44, 44, etc., so as to cancel a recess or projection of rails 18 and 18. Thus, the propeller shaft 12 can be carried in a horizontal state without being influenced by the recess or projection of the rails 18 and 18. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a long shaft for carrying a propeller shaft of a ship, which is a long shaft, when the propeller shaft of the ship is regularly inspected and pulled out from the hull for carrying and for storing in the hull. Bearing bearing and carrier device.

[0002]

2. Description of the Related Art Ships are legally required to disassemble, inspect and repair engine system parts such as an engine, a propeller shaft, a propeller and a coupling once every five years. This inspection is carried out at the dry dock, and is carried out under the guidance of the inspection technician during the period from entry to departure.

The propeller shaft is inspected, for example, in a twin-engine type in which two shafts are arranged in the stern, one shaft is pulled out from the stern tube (boss) of the hull to the outside of the ship, and the whole is visually inspected and nondestructive inspection (magnetic Perform flaw detection inspection, etc.).

When the propeller shaft is pulled out from the boss,
As a setup work, a rail is laid on the extension line of the boss, and a plurality of carriages are provided on this rail. Then, at the time of pulling out work, the propeller shafts gradually pulled out from the boss are sequentially placed on the carriage, and are conveyed in the pulling direction, whereby the propeller shafts are completely pulled out from the boss.

The propeller shaft of a ship with a discharge capacity of 10,000 tons has a size of φ500 × 15M, and such a propeller shaft of a long heavy object is also pulled out from the boss in the above procedure.

[0006]

However, in the conventional method of pulling out the long shaft, since the carrier truck also travels along the unevenness of the ground or floor on which the rail is installed, the propeller shaft being transported is not affected. There was a problem that excessive force was applied and the propeller shaft was damaged. This problem was more serious as the propeller shaft was longer and heavier.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a long bearing stand / conveying device which can convey a long shaft without applying an excessive force to the long shaft. To aim.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a main body of a conveying device that travels along a rail, and a longitudinal shaft mounted on the main body of the conveying device so as to be vertically movable. And a driving means for moving the pillow member up and down with respect to the carrying device main body, and a control means for controlling the driving means.

According to the first aspect of the present invention, the control means controls the drive means to convey the long shaft along the rail while controlling the vertical position of the pillow member. That is, by controlling the vertical position of the pillow member so as to cancel the unevenness of the rail, it is possible to carry the long axis in a horizontal state without being affected by the unevenness of the rail. Therefore, the long shaft can be conveyed without applying an excessive force to the long shaft.

According to the second aspect of the present invention, the inclinometer is attached to the long shaft being conveyed, and the control means controls the drive means based on the inclination angle information output from the inclinometer. Therefore, by performing feedback control of the drive means so that the tilt angle output from the inclinometer is always 0, horizontal transport of the long shaft can be automated. Further, in some cases, it becomes possible to convey the long shaft while maintaining a predetermined angle.

According to a third aspect of the invention, the pillow member is swingably supported with respect to the main body of the conveying apparatus. By swinging the pillow member, it is possible to absorb the angular deviation between the main body of the conveying device and the long shaft, so that the long shaft can always be stably conveyed.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a long bearing stand / conveying device according to the present invention will be described below in detail with reference to the accompanying drawings.

1 to 3, a propeller shaft 12 is used for a boss 1 of a hull by a long bearing stand / conveying device 10 according to an embodiment.
The flow as it is pulled from 4 and conveyed is shown.

The long bearing stand / conveying device 10 includes a rail 1
Frame 16 and rail 1 on which 8 and 18 (see FIG. 4) are laid
A plurality of carriages (carrying device main body) 2 traveling on 8 and 18
0, 20, ..., and an inclinometer 22 (see FIG. 3) attached to the propeller shaft 12 are mainly configured.

The pedestal 16 is arranged along an extension line of the boss 14, and the pedestal 16 is erected on a pedestal installation floor 24 provided in the dry dock.

As shown in FIG. 4, four wheels 28, 28 ... Fitting on the rails 18, 18 are provided on the main body 26 of the cart 20 formed in a box shape. Of the front wheels 28, 28 located on the right side in FIG.
Power from a motor 30 with a reducer provided at the lower part of 6 is transmitted via a power transmission member 32 such as a gear or a belt. The motor with speed reducer 30 includes a control unit (control means) 3
ON / OFF is remotely controlled by 4. Further, the speed reducer-equipped motor 30 has an electromagnetic clutch and a brake,
The electromagnetic clutch and brake are also remotely operated by the control unit 34.

In order to convey the long propeller shaft 12, a large number of carriages 20, 20, ... Are required as shown in FIG.
A speed reducer-equipped motor 30 attached to each carriage 20,
.. are synchronized by the control unit 34. On the other hand, as shown in FIG. 4, when the adjacent trucks 20, 20 are connected by the connecting bar 36, either one of the trucks 20 may be a towing vehicle, and therefore the towed truck 2
The control unit 34 disengages the electromagnetic clutch of the motor 30 with reduction gear of No. 0. Not only two, but a plurality of carts 20,
20 may be connected by connecting bars 36, 36 ...

An electric cylinder (driving means) 38 is attached to the side surface of the main body 26 of the carriage 20. Another electric cylinder 38 is arranged on the side surface facing the side surface, and each of the rods 4 of the electric cylinders 38, 38 is arranged.
A support shaft 42 is mounted on the ends of 0 and 40.

The support shaft 42 is inserted into the bearing portion 46 of the pillow member 44 inside the main body 26 with a predetermined gap. The pillow member 44 is a member that supports the propeller shaft 12, and its mounting surface 45 is formed in a V shape in order to stably mount the propeller shaft 12. With this configuration, the pillow member 44 that supports the propeller shaft 12 is moved up and down by the expansion and contraction operation of the rods 40 of the electric cylinders 38. Since the electric cylinders 38, 38 are controlled by the control unit 34, the expansion / contraction amount of the rods 40, 40, that is, the height position of the pillow member 44 is determined by the control unit 34.
Controlled by.

The pillow member 44 includes the support shaft 42 and the bearing portion 4
It is supported by a gap between the shaft 6 and 6 so as to be swingable in the direction of the arrow in FIG. Furthermore, the pillow member 44 includes the pillow member 44 and the main body 2.
The mounting surface 45 is held so as to always face upward by the urging force of the plurality of springs 48, 48 disposed between the mounting surface 45 and the mounting surface 6.

In the embodiment, the electric cylinder 38 is applied as the driving means, but the driving means is not limited to this, and has a strength to withstand the weight of the propeller shaft 12 and
Any driving means can be applied as long as it has an accuracy capable of canceling the irregularities of the rails 18, 18. For example, according to the driving means of FIG. 5, the lower tapered surface 44A of the pillow member 44 is placed on the upper tapered surface 60A of the wedge 60,
The wedge 60 is moved back and forth with respect to the lower portion of the pillow member 44 by the cylinder device 62. By this operation, the height position of the pillow member 44 can be adjusted.

By the way, when the propeller shaft 12 is pulled out from the boss 14 as shown in FIG. 3, the inclinometer 22 is attached to a substantially central portion of the propeller shaft 12. The inclinometer 22 is a device that measures the inclination angle and the inclination direction of the propeller shaft 12 during conveyance, and information indicating the inclination angle and the inclination direction is shown in FIG.
Is output to the control unit 34. Based on the information, the control unit 34 causes the electric cylinders 38, 38 of the carriages 20, 20 ...
Is controlled to control the height position of the pillow member 44.

Next, a method of carrying the propeller shaft 12 by the long bearing stand / carrying device 10 configured as described above will be described.

First, as shown in FIG. 3, an inclinometer 22 is attached to a substantially central portion of the propeller shaft 12 immediately after being pulled out from the boss 14. Thereby, the inclinometer 22 to the control unit 34 of FIG.
Then, information indicating the current inclination angle of the propeller shaft 12 and its inclination direction is output.

The control unit 34 controls the electric cylinders 38, 38 of the carriages 20, 20 ... On the basis of the information, and the respective pillow members 44, so that the inclination angle of the propeller shaft 12 becomes 0 (horizontal). The height position of 44 ... Is controlled.

By this control, the propeller shaft 12 becomes horizontal. The height H (see FIG. 6) at this time is stored in the control unit 34 as a reference height. Then, the control unit 34 drives and controls the motors 30 and 30 with reduction gears of the carriages 20 and 20 to start the conveyance of the propeller shaft 12 by the carriages 20 and 20.

During the transportation of the propeller shaft 12, the control unit 34 controls the electric cylinders 38, 38 of the carriages 20, 20 ... so that the propeller shaft 12 is transported horizontally while maintaining the reference height H. To do. That is, as shown in FIG. 6, the pillow member 4 is formed so as to cancel the unevenness of the rails 18, 18.
The vertical position of 4, 44 ... Is controlled. As a result, the propeller shaft 1 is not affected by the unevenness of the rails 18, 18.
2 can be transported while being kept horizontal. Therefore, the propeller shaft 12 can be conveyed without applying an excessive force to the propeller shaft 12.

Further, in the long bearing stand / conveying device 10 of the embodiment, since the electric cylinders 38, 38 ... Are feedback-controlled so that the inclination angle output from the inclinometer 22 is always 0, the propeller is propelled. Horizontal transportation of the shaft 12 can be automated. In some cases, a predetermined angle (for example, 3
It is also possible to convey the propeller shaft 12 while maintaining (°).

Further, in the long bearing stand / conveyor device 10 of the embodiment, the pillow member 44 is swingably supported on the main body 26 of the carriage 20, so that the main body 26 of the carriage 20 and the propeller shaft 1 are supported.
The angular deviation from 2 can be absorbed by swinging the pillow member 44. Therefore, the propeller shaft 12 is transported in a state where it is always in surface contact with the mounting surface 45 of the pillow member 44, so that the propeller shaft 12 can be stably transported.

[0030]

As described above, according to the long bearing stand / conveying device of the present invention, the long shaft is conveyed while controlling the driving means by the control means and controlling the vertical position of the pillow member. The long shaft can be conveyed without being affected by the irregularities of the rails, and thus the long shaft can be conveyed without applying excessive force to the long shaft.

Further, according to the present invention, since the inclinometer is attached to the long axis being conveyed and the control means controls the drive means based on the inclination angle information output from the inclinometer,
Horizontal transportation of the long shaft can be automated, and the long shaft can be transported while maintaining a predetermined angle.

Furthermore, according to the present invention, since the pillow member is swingably supported with respect to the main body of the conveying device, it is possible to absorb the angular deviation between the main body of the conveying device and the long shaft, and thus the long shaft is always maintained. Can be stably transported.

[Brief description of drawings]

FIG. 1 is an explanatory diagram illustrating extraction of a propeller shaft by a long bearing base / conveying device according to an embodiment.

FIG. 2 is an explanatory view for explaining the pulling out of the propeller shaft by the long bearing stand / conveying device according to the embodiment.

FIG. 3 is an explanatory diagram illustrating pulling out of a propeller shaft by the long bearing base / conveying device according to the embodiment.

FIG. 4 is a perspective view showing a structure of a long bearing stand / conveying device according to an embodiment.

FIG. 5 is a structural diagram showing another embodiment of the pillow member up-and-down device of the long bearing stand and carrier device.

FIG. 6 is an explanatory view showing a state in which the propeller shaft is being conveyed on the uneven rail by the long bearing stand / conveying device according to the embodiment.

[Explanation of symbols]

10 ... Long bearing stand and carrier device, 12 ... Propeller shaft, 14
... Boss, 16 ... Cradle, 18 ... Rail, 20 ... Truck, 22
... inclinometer, 26 ... main body, 30 ... motor with reduction gear, 32 ...
Power transmission member, 34 ... Control unit, 38 ... Electric cylinder, 4
4 ... Pillow member

Claims (3)

[Claims] 1. A carrier device main body that travels along a rail, a pillow member that is vertically movable on the carrier device main body, and on which a long shaft is mounted, and the pillow member with respect to the carrier device main body. A long bearing stand / conveyor device, comprising: a driving unit that vertically moves the device and a control unit that controls the driving unit. 2. An inclinometer for measuring an inclination angle of the long shaft is attached to a long shaft conveyed by the long bearing stand / conveying device, and the control means outputs from the inclinometer. The long bearing stand / conveying device according to claim 1, wherein the drive means is controlled based on the inclination angle information. 3. The pillow member is swingably supported with respect to the carrier device main body.
Alternatively, the long bearing stand / conveying device according to item 2.