JPH076077Y2 - Lifting thruster - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] This invention is equipped with a thruster in a container that is vertically movable in a storage room provided in the hull. When the thruster is used, the container is lowered and fixed.
The present invention relates to an elevating thruster device in which a screw propeller is projected downward to operate.

[0002]

2. Description of the Related Art An elevating thruster is a device which is normally stored in a hull and is operated by projecting it out of the hull when necessary to propel or move the ship.

[0003] For example, when the main vessel is self-propelled, the thruster is lowered to the use position, while when towed by a doug boat or the like, the thruster is pulled up and stored to prevent an increase in resistance.

Further, even when working in a shallow water area where the thruster may come into contact with the seabed, storing the thruster can prevent damage.

As described above, the elevating thruster equipped to be movable up and down with respect to the hull needs to be firmly fixed to the hull side in order to transmit the thrust force generated by the thruster to the hull when in use. When stored in the hull,
It is required that the thruster be securely fixed so that there is no rolling of the thruster against any movement of the hull.

Therefore, as this type of lifting type thruster device, the thruster is hung on the lifting platform, and the lifting platform is engaged with the guide rod fixed to the hull, and the lifting unit is provided between the lifting platform and the hull. In order to fix the thruster, the applicant of the present invention has proposed a structure in which the rod is hydraulically tightened to the rod insertion portion of the lift table. (JP-A-61-261
(See Japanese Patent No. 188)

[0007]

SUMMARY OF THE INVENTION As described above, a thruster device having a structure in which a rod is used to guide an elevating platform on which a thruster is suspended to ascend and descend is provided with a single elevating device installed on the hull side. The driving electric motor etc. are stored in a watertight casing that is lowered into the water, and the load on the lifting part is
It is always applied downward, and the form of the ascending / descending part can be applied when it is made relatively small.

[0008] By the way, in the case where a hollow container is installed in a storage room provided in the hull so as to be able to move up and down, and the inside of the container is used as a machine room, a drive motor for thrusters, related equipment and a lifting device are installed. , The container is applied as a downward load on the hull when the water is shallow on the ship, and is applied as an upward load on the contrary when the water is deep and buoyancy acts. You need to stop moving.

Further, in order to move the container up and down, generally, a plurality of lifting devices are used. When a guide mechanism is provided on the device, the guide mechanism is applied to the external pressure applied when the container moves up and down. The rigidity of the guide mechanism is large enough to deal with this, and precise operation control is required to operate each lifting device.Furthermore, the guide mechanism is a separate facility from the lifting device, so the overall Equipment becomes complicated.

Therefore, it is extremely difficult to provide a guide mechanism in a container in which the inside of the container is used as a machine room and people can freely move in and out for maintenance and inspection.

The present invention has been made in view of the above points, and is applied to a container in which people can freely enter and leave,
It is an object of the present invention to provide an elevating thruster device which realizes reliable fixing of a container and simplification of the device.

[0012]

SUMMARY OF THE INVENTION To achieve the above object, the gist of the present invention is that it has a cylindrical container passage portion extending above the top wall and is provided in a storage room provided in the hull. A container that is arranged to move up and down, a thruster that is installed in the container and has a screw propeller that rotates below the container, and a rod that is installed in the container and that protrudes above the top wall of the container, and the upper end of the rod is the storage chamber. A container lifting device that is connected to the beam installed on the hull at the upper part with a gap that allows some vertical and horizontal movement, and a container passage part projecting above the beam. Elevating thruster characterized by comprising: a taper hole that is provided in a special manner, and a container fixing device that is provided on the beam corresponding to the taper hole and that has a taper pin that is inserted into and removed from the taper hole. It is in the location.

[0013]

[Function] A person can freely enter and leave the container through the container passage. When the container moves up and down, the container is suspended by the rod of the lifting device, and at the joint between the rod upper end and the beam installed on the hull, the rod upper end is a joint that allows some movement in the vertical and horizontal directions. Therefore, even if the levelness of the container is a little bad,
Due to the position movement of the upper end of the rod at the connecting portion, an unreasonable load is not applied to the lifting device, and the container itself naturally calms down and hangs up and down.

With the container stopped at a predetermined position, the fixing device is operated to insert the taper pin into the taper holes provided equidistantly at three locations on the outer circumference of the container passage, and finally the taper pin is inserted. Is completely fitted in the tapered hole, the container is positioned in the vertical direction, and is prevented from rotating (turning) and fixed.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a main part in a thruster use position, and FIG. 2 is a block diagram of a main part in a thruster storage position.

In the figure, 1 is a hull, 2 is a storage room provided in the hull 1, 3 is a container installed in the storage room 2 so as to be able to move up and down, and a cylindrical container passage portion 4 is provided above the center of the top wall.
A manhole 5 is provided at the upper end of the container passage 4 and a step 6 is provided on the inner wall surface to allow people to enter and leave the container 3.

Reference numeral 7 is a thruster mounted on the container 3, and a screw propeller 9 rotating below the container 3 is connected to a drive device 8 mainly composed of an electric motor mounted inside the container 3.

Reference numeral 10 denotes an elevating device for the container 3 installed in the container 3, and a plurality of elevating cylinders 11 (for example, 2 to 3) are equidistantly mounted on the top wall of the container and the rod thereof is installed.
12 is projected above the top wall of the container 3, and the rod upper end 13 is connected to the beam 14 installed on the hull 1 at the upper part of the containment chamber 2.At this connecting part, the rod upper end 13 and the beam 14 are connected. An appropriate gap 13 'is formed between the rod and the rod to allow a slight movement of the rod 12 both in the vertical direction and in the horizontal direction.

Reference numeral 15 denotes a container passage portion that penetrates the beam 4.
Tapered holes provided equidistantly at three locations on the outer circumference circle of 4 and 16 are fixing devices for the containers 3 arranged on the beam 14 corresponding to the tapered holes 15, and as shown in FIG. The individual fixing cylinders 17 are mounted on the beam 14, and the taper pins 18 are projected and retracted from the fixing cylinders 17 toward the tapered holes 15. In the embodiment, the taper holes 15 of the container passage portion 4 are provided at upper and lower positions so that the container 3 can be fixed by the fixing device 16 at the retracted position where the container 3 is pulled up and the use position where the container 3 is lowered.

FIG. 4 is a diagram showing the construction of the main part of the thruster in the use position according to another embodiment.

In this embodiment, a receiving seat 19 for receiving the container 3 at the working position is provided at the lower end of the storage chamber 2 in a protruding manner.
The container 3 is fixed by the fixing device 16 only in the retracted position, and in the use position, the lifting cylinder 11 is used.
The container 3 is crimped to the receiving seat 19 by applying a certain hydraulic pressure to the container.

[0023]

According to the present invention constructed as described above, the following effects can be obtained.

(1) Since a person can freely move in and out of the container through a container passage portion extending above the top wall of the container, maintenance and inspection with the inside of the container as a machine room becomes easy. Moreover, since a dedicated guide mechanism for guiding the up and down movement of the container is not required, the facility can be simplified.

(2) The upper end of the rod of the lifting device for lifting and lowering the container in a suspended state is formed in the beam installed on the hull at the upper part of the storage chamber with a gap allowing a slight vertical and horizontal movement. Since they are connected, even if the levelness of the container is somewhat poor due to external pressure applied to the container and the amount of expansion and contraction of the lifting device, etc., the lifting device will not be overloaded and the container will move smoothly. To realize.

(3) When fixing the container, the taper pins of the fixing device mounted on the beam are advanced all at once to the taper holes equidistantly provided at three locations on the outer circumference of the container passage. Since they are mated, even if the container stops and there is some misalignment, this is naturally corrected to achieve a secure fixation with high positional accuracy, and rotation during thruster swivel operation is completely blocked and lifted. It also prevents overloading the device.

(4) Since the fixing device is located above the container, it is easy to design and manufacture in a shipyard, which is advantageous in terms of maintenance.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a main part in a use position of a thruster.

FIG. 2 is a configuration diagram of a main part at a storage position of a thruster.

FIG. 3 is a plan view showing an arrangement example of a container fixing device.

FIG. 4 is a configuration diagram of a main part at a use position of a thruster showing another embodiment.

[Explanation of symbols]

 1… Hull 2… Container 3… Container 4… Passage 5… Manhole 6… Step 7… Thruster 8… Drive 9… Screw propeller 10… Elevator 11… Elevating cylinder 12… Rod 13… Top 14… Beam 15 … Taper hole 16… Fixing device 17… Fixing cylinder 18… Taper pin 19… Seat

Claims (1)

[Scope of utility model registration request] 1. A container having a cylindrical container passage portion extending above a top wall and arranged to be movable up and down in a storage chamber provided in a hull, and a screw equipped in the container and rotating below the container. A thruster with a propeller and a rod mounted on the container and protruding above the top wall of the container, the upper end of which is a gap allowing some vertical and horizontal movement of the beam installed on the hull above the containment chamber. Elevating and lowering device for container formed by connecting to each other, tapered holes equidistantly provided at three locations on the outer circumferential circle of the container passage portion projecting on the beam, and mounted on the beam corresponding to the tapered holes An elevating thruster device, comprising: a container fixing device having a taper pin that is inserted into and removed from the taper hole.