JP2002145190A - Elevating container type propulsion machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve problem in work for supporting and fixing an elevating container type propulsion machine to a hull which requires fine position adjustment on a job site resulting in requiring long installation time. SOLUTION: A plurality of container-supporting pins 12 for supporting a container 3 are installed between the upper part of the container 3 and the hull 1, and upper and lower two large supporting holes 14 corresponding to the housing position of the container 3 and an operation position, having specified gaps are installed between the outer shapes of the supporting pins 12, a plurality of fixing pins 15 for fixing the container 3, and upper and lower two seats corresponding to the fixing pins 15 are installed between the lower part of the container 3 and the hull 1, and when being fixed in going up housing or in going down operation, the supporting pins 12 are inserted into the supporting holes 14, the gaps between them are eliminated, the outer surfaces of the supporting pins 12 are brought into contact with the supporting holes 14, and in this state, the fixing pins 15 are pressed against the seats 16 to support and fix the container 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting container type propulsion device in which a thrust is generated by operating a propulsion device by protruding it from the bottom of a ship when necessary.

[0002]

2. Description of the Related Art There has been a conventional ship equipped with a lifting container type propulsion device. This lifting container type propulsion device is usually stored inside a ship so as not to cause resistance during navigation of propulsion, and is used to generate thrust by protruding from the bottom of the ship when necessary and operating.

[0003] Such a lifting container type propulsion device is a propulsion device capable of rotating the entire propeller section 360 °, so that a rudder and a steering device are not required as compared with a line shaft type. Compared to side thrusters,
It can give more powerful thrust. Therefore, in recent years, it has been widely used as a new propulsion device for ships. In particular, it is often installed in ships that maintain their positions at fixed points, such as observation ships and drilling ships.

[0004] However, this lifting container type propulsion device has a stability that it is suspended only by a hydraulic cylinder, while a conventional tunnel thruster is installed and firmly integrated by welding to a hull. It is operated in a small fixed state. Therefore, there are disadvantageous conditions in terms of strength and vibration, and a strong support / fixing measure is desired.

[0005] In addition, the supporting and fixing may be performed with a small force when the machine at the time of ascending and retracting is at rest, but is subjected to a large force during the operation at the time of descending. A method is desired.

[0006] Further, the support and fixing to the general hull,
Positioning is performed by a pin provided on the container and a pin hole provided on the hull corresponding to the pin, so that the positioning requires high accuracy. However, since this work is a fine position adjustment work on site, the adjustment work is difficult, and a great amount of installation time is required.

As a prior art of this kind, Japanese Patent Laid-Open No.
The invention described in Japanese Patent Application Laid-Open No. 9-75900,
There is an invention described in Japanese Patent No. 994. JP-A-59-7590
In the invention described in Japanese Patent Publication No. 0, the container fixing pins each having a tapered tip are provided at two positions, that is, upper and lower portions of the container.
A container is fixed to the hull by providing a tapered hole along the tapered shape. However, when the fixing pins are provided at the upper and lower positions of the container, it is difficult to securely fit both of the two positions. In fact, it is only possible to fit at one of the upper and lower positions. Fixation becomes unstable. Further, since the tapered holes are provided in the hull, the work is carried out at a shipyard, and it is almost impossible to accurately match the two tapered holes with the pin positions, and there is a problem in commercialization.

In the invention described in Japanese Utility Model Laid-Open No. 4-100994, a plurality of container fixing pins each having a tapered tip are installed on a beam, and a hole is formed in a passage portion of the container along the tapered shape. The container is fixed. However, since there is only one fixing pin originally, there is no problem as described above. On the contrary, since there is only one fixing pin,
Similarly, the securing of the container is extremely unstable. It is weak in strength and low in feasibility. Even on the vibrating surface, it is easy to vibrate or resonate due to insufficient rigidity, and there is a problem in commercialization. Also, in this case, it is difficult to match the positions of the plurality of tapered pins with the same holes as in the above case.

As described above, according to the conventional technique, it is difficult and unstable to fix a lifting container type propulsion unit that gives a strong thrust and makes a full 360 ° turn integrally with the hull. Therefore, stable driving is difficult.

[0010]

In order to solve the above-mentioned problems, the present invention provides an elevating member for projecting or storing a container from the bottom of a ship, and supporting the container between an upper portion of the container and the hull. A plurality of container supporting members to be provided, and two large upper and lower supporting holes provided corresponding to the storage position and the operating position of the container having a predetermined gap between the outer shape of the container supporting member and the container. Are provided between the lower part of the container and the hull, and a plurality of fixing members for fixing the container and two upper and lower seats provided corresponding to the fixing member are provided. When fixed during driving,
A support member is inserted into the support hole, the gap between them is eliminated, the outer surface of the support member is brought into contact with the support hole, and the fixing member is pressed against the receiving seat to support the container.
It is configured to be fixed. As the position where the container supporting member is provided, the entire center of gravity is located below the center position of the container, so it is more stably provided above the center of gravity and hanging the propulsion unit. preferable. With this configuration, the container support member is inserted into a support hole that is larger than the container support member provided between the container and the hull, and the outer surface of the container support member is inserted into the support hole at the time of the ascent or storage operation. By contacting the container, the container can be supported with high positioning accuracy, and in this state, the container can be supported and fixed by pressing the supporting member against the receiving seat, so that a strong fixing can be performed in a short installation time. It becomes possible.

[0011] Further, the lifting container type propulsion device is configured such that the total weight of the propulsion device and the container is greater than the buoyancy at the ascending storage position, and the vertical force becomes a downward load. By raising and lowering the elevating member for raising and lowering the propulsion device, the propulsion device is raised upward and the support member is inserted into a support hole provided at a position opposed thereto,
If the container is moved downward by gravity when the container restraining force of the elevating member is removed, and the supporting member is positioned so as to hit the lower part of the supporting hole, the weight of the propulsion device and the container is used to raise and lower the container. Since the positioning of the container-type propulsion device at the time of lifting can be easily performed, the lifting-lowering container-type propulsion device can be easily brought into the raised storage state.

When the elevating member is shortened and the propulsion unit is raised to the upper limit position, if the center of the support hole is arranged substantially at the center of the supporting member, the elevating member can be easily controlled. A container type propulsion device can be configured.

[0013] Further, the lifting container type propulsion device is configured such that in the lowering operation position, the total buoyancy of the propulsion device and the container becomes larger than the weight, and the vertical force becomes an upward load. By lowering the propulsion device by extending the lifting member that raises and lowers the propulsion device, the propulsion device is lowered, and the support member is inserted into the support hole provided at the opposing position,
If the container is moved upward by buoyancy and the supporting member is positioned in contact with the upper portion of the support hole if the container restraining force of the elevating member is removed, the lifting and lowering can be performed by using the buoyancy of the propulsion device and the container Since the positioning of the container-type propulsion device at the time of descent can be easily performed, the lifting-lowering container-type propulsion device can be easily set in the descent operation state.

When the elevating member is extended and the propulsion unit is lowered to the lower limit position, if the center of the support hole is disposed substantially at the center of the supporting member, the elevating member can be easily controlled. A container type propulsion device can be configured.

Further, if the supporting member and / or the fixing member are provided at the corner of the container or the hull, the supporting member and / or the fixing member have higher rigidity than the surface portion and have higher strength and rigidity. It can be provided at a strong corner to make the strength design advantageous.

[0016] Further, the supporting member and / or the fixing member may be constituted by a hydraulic device, and a check valve for shutting off oil supplied to the supporting member and / or the fixing member may be provided in an operating hydraulic circuit of the hydraulic device. And an accumulator located upstream of the check valve, and the working hydraulic circuit is provided with a function of switching over the circuit to the check valve and shutting off after filling the accumulator with pressurized oil. For example, after the accumulator is filled with pressurized oil, the circuit of the check valve is switched by an electromagnetic valve or the like to shut off the circuit, so that the pump is operated only when the support member and / or the fixing member is operated. Even if leakage occurs in the hydraulic equipment, the pressurized oil of the accumulator can be replenished, and stable supply of hydraulic oil to the hydraulic equipment can be performed.

In addition, the lifting member is constituted by a hydraulic cylinder, a suspension flange is provided on the upper portion of the hydraulic cylinder, and the suspension flange is held by an upper suspension beam provided on the hull. If a bearing member is provided on the lower surface and gaps are provided in the vertical and horizontal directions, resistance at the top of the hydraulic cylinder during lifting and lowering operation is small and movement within the range of the gap is allowed. Can slide and move.

Further, if a guide is provided between the outer surface of the container and the hull to guide the container up and down, when the container is raised and lowered, the container can be smoothly moved without swaying, moving or rotating with the hull. Up and down.

Further, if a vibration damping material for reducing vibration transmission is filled in a support hole or a seat provided corresponding to the container supporting member or the fixing member, the vibration of the propulsion device is reduced by the vibration damping material. Transmission to the side can be suppressed.

In addition, the support hole or the seat provided corresponding to the container supporting member or the fixing member may be formed of an elastic body, or the elastic body may be provided in the support hole or the seat to reduce the transmission of vibration. Then, vibration transmission can be prevented at low cost.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing a state in which a lifting container type propulsion device according to a first embodiment of the present invention is stored in a ship at the time of ascending storage, FIG. 2 is a view taken in the direction of an arrow II shown in FIG. 1, and FIG. FIG. 4 is a sectional view taken along the line III-III of FIG. 1 showing a supporting pin part of the lifting container type propulsion machine. FIG. 4 is a sectional view taken along the line IV-IV of FIG. FIG. 6 is a longitudinal sectional view showing a hanging flange portion of a hydraulic cylinder which is a member, and FIG. 6 is a longitudinal sectional view showing an example of a seat for a container fixing pin.

As shown in FIG. 1, a storage room 2 is formed at a predetermined position of a hull 1 in a vertical direction, and an elevating container type propulsion unit 35 is provided in the storage room 2 so as to be able to move up and down. I have. The lifting container-type propulsion device 35 includes a container 3 that moves up and down in the storage room 2 and a propulsion device 4 that is provided below the container 3 and protrudes from the ship bottom or is stored. The propulsion device 4 is rotated by a turning mechanism (not shown).
It is configured to be able to turn 0 °. An electric motor for moving the turning mechanism is incorporated in the container 3. 36
Is the draft surface.

The container 3 is suspended from an upper suspension beam 5 provided above the storage room 2. This suspension is performed by a hydraulic cylinder 6 which is a lifting member incorporated in the container 3. The hydraulic cylinder 6 is usually
The suspension cylinder 8 is suspended by incorporating a suspension flange 8 above the rod 7 of the hydraulic cylinder 6 into the upper suspension beam 5. As described above, the lifting container type propulsion device 35 in this embodiment is suspended by the hydraulic cylinder 6 supported by the upper suspension beam 5 provided on the hull 1, and can be raised or lowered by expansion and contraction control of the hydraulic cylinder 6. It is configured as follows. In the first embodiment, the hydraulic cylinder 6 is controlled at the stroke end when the elevating container type propulsion device 35 moves up and down.

In this embodiment, the hydraulic cylinder 6 is used as an example of the elevating member. However, this elevating member may have another structure, for example, a rack and pinion or a rope or another elevating member. Alternatively, various lifting members can be applied.

As shown in FIGS. 3 and 4, a guide 9 is provided between the outer surface of the container 3 and the hull 1 in the vertical direction. By providing the guide 9, when the container 3 is moved up and down, the container 3 smoothly moves up and down in the storage room 2 of the hull 1 without shaking, moving and rotating. The guide 9 of this embodiment has a V-shaped guide 10 provided on the outer surface of the container 3 and a similar V-shaped groove 11 provided on the hull 1 correspondingly. If two or more guides 9 are provided, the container 3 can be smoothly moved up and down without shaking, moving and rotating.

As shown in FIG. 1, a container support pin 12 as a container support member is provided on the upper portion of the outer surface of the container 3. This container support pin 12 has a cylindrical tip (FIG. 2).
(A plurality). In order to correspond to the support pins 12, the hull 1 has a larger diameter than the cylindrical outer diameter of the support pins 12 and a predetermined gap 13 between them.
Are provided at two upper and lower positions. The upper support hole 14 is used by inserting the support pin 12 during the ascending storage, and the lower support hole 14 is used by inserting the support pin 12 during the lowering operation.

Further, a lower portion of the outer surface of the container 3 is provided with a container fixing pin 15 as a container fixing member. The container fixing pins 15 are for pressing and fixing to the hull 1, and four (a plurality of) pins are provided. In order to correspond to this fixing pin 15,
Receiving seats 16 having a size corresponding to the fixing pins 15 are provided on the hull 1 at two upper and lower positions. The receiving seat 16 of this embodiment is provided so as to protrude from the wall surface of the storage room 2. As will be described later, the seat 16 may be flush with the wall surface of the storage room 2 or may be concave as long as the size of the container fixing pin 15 can be moved.
The upper seat 16 is used by pressing the fixing pin 15 during the ascending storage, and the lower seat 16 is used by pressing the fixing pin 15 during the lowering operation.

In this embodiment, the support pins 1
2. Although the fixing pin 15, the support hole 14, and the receiving seat 16 are all formed in a circular shape, they may be rectangular, and the shape is not limited. Further, the size of the gap 13 between the support hole 14 and the support pin 12 and the size of the receiving seat 16 are not limited, and may be set as appropriate according to use conditions and the like.

As shown in FIGS. 3 and 4, in this embodiment, the support pins 12 and the fixing pins 15 are provided at the corners 17 of the container 3. By providing the support pins 12 and the fixing pins 15 at the corners 17 of the container 3 in this manner, the rigidity is higher than the surface of the container 3,
Since support and fixing can be performed at a strong position in terms of strength and rigidity, it is advantageous in terms of strength design. The same applies to the hull 1 side, and the container support pin 12 and the fixing pin 15
The supporting hole 14 and the receiving seat 16 are
By providing the hull, a design advantageous in terms of the strength of the hull can be made.

As described above, a pair of upper and lower supporting pins 12 and fixing pins 15 are provided on the container 3 side, and the hull 1
On the side, a pin support hole 14 and a receiving seat 16 corresponding to the support pin 12 and the fixing pin 15 are provided.

Further, in this embodiment, the support pins 1
2 is provided on the upper part of the container 3,
By positioning the center of gravity of the entire 5 below the center position of the container, the entire propulsion unit is hung by the support pins 12, thereby stably supporting the propulsion unit.

The lifting container type propulsion device 35 of this embodiment is configured such that the total weight of the propulsion device 4 and the container 3 is larger than the buoyancy at the ascending storage position. In the retracted position, a downward force acts. On the other hand, in the descending operation position,
Since the total buoyancy of the propulsion device 4 and the container 3 is configured to be larger than the weight, an upward force acts at this lowering operation position.

As shown in FIG. 5, the suspension flange 8 provided on the hydraulic cylinder 6 serving as the elevating member is provided with slide bearings 19 on the upper and lower surfaces supported by the upper suspension beam 5. As the slide bearing 19, a slide bearing or a roller bearing can be used. Further, gaps 20 and 21 are provided in the vertical direction and the radial direction of the suspension flange 8. As a result, the suspension flange 8 is not restrained in the upper suspension beam 5,
It is possible to move within a predetermined allowable range. Moreover, it can be easily slid and moved with a small force.

By providing the gaps 20 and 21 between the suspension flange 8 and the upper suspension beam 5 so as to be movable as described above, each pin 12, 12 caused by a manufacturing error or the like can be obtained.
The container 3 can be shifted and positioned so as to absorb a relative shift between the support hole 15 and the support hole 14 and the receiving seat 16. In other words, at the time of positioning, the suspension flange 8 of the hydraulic cylinder 6 is moved by that amount by the displacement of the container 3, and the suspension flange 8 is adapted to escape the displacement.

In this embodiment, the hydraulic cylinder 6
When the container 3 is raised to the upper limit position by shortening the container 3 to the stroke end (in the state of the body), the support pin 1
The center of 2 is located substantially at the center of the upper support hole 14 (see FIG. 8). On the other hand, as shown in FIG.
When the propulsion device 35 is lowered to the lower limit position by the extension operation, the center of the support pin 12 is substantially at the center position of the lower support hole 14.

The fine adjustment of the relative height position so that the stroke end of the hydraulic cylinder 6 is substantially at the center of the support hole 14 can be performed, for example, by using the suspension flange 8 and the upper suspension beam 5 as shown in FIG. The height can be easily adjusted by inserting the height adjusting liner 34 between them. For this adjustment, a height adjusting liner may be inserted between the upper suspension beam 5 and the hull mount.

As described above, by providing the center position of the support pin 12 at the stroke end of the hydraulic cylinder 6 so as to be substantially the center of the support hole 14, the hydraulic cylinder 6
Stroke control can be easily performed.

In this example, the upper limit position of the propulsion unit 35 is determined by operating the hydraulic cylinder 6 until the stroke end. However, the lower limit position is determined by controlling the rod expansion / contraction amount of the hydraulic cylinder 6. The control of the vertical position of the container 3 is not limited to this embodiment.

As shown in the vertical sectional view of FIG. 6, in this embodiment, the seat 16 is supported by the damping material 22. The vibration damping material 22 of this embodiment has a separate support hole 14 or seat 16 provided on the hull 1 side corresponding to the container support pin 12 or the fixing pin 15, and the support hole 14 or the seat A vibration damping material 22 is filled between the rear part of 16 and the surrounding parts of the upper, lower, left and right and the hull 1 to reduce and attenuate vibration transmission. Thus, the vibration transmitted from the support pins 12 or the fixing pins 15 to the hull 1 is effectively reduced and attenuated, and the lifting and lowering container type propulsion device 35 of low vibration and low noise type is configured.

In this embodiment, the damping material 22 is provided, but the support hole 14 or the seat 16 is made of an elastic material such as rubber, or the support hole surface or the seat surface or the back surface thereof is made of rubber or the like. By providing the elastic body described above, reduction and attenuation of vibration transmission with the hull 1 may be measured.

FIG. 7 is a circuit diagram showing an example of the hydraulic circuit. An operating hydraulic circuit 23 for operating the support pins 12 and the fixing pins 15 includes an oil supplied to the support pins 12 and the fixing pins 15. A check valve 24 (using a pilot check valve) for shutting off the air, and an accumulator 25 located upstream of the check valve 24 are provided. Then, in the working hydraulic circuit 23, the pressurized oil is supplied to the oil passage 26 to extend each pin 12, and the accumulator 25 is filled with the pressurized oil. Then, the circuit to the check valve 24 is switched to shut off. A control valve 27 is provided. 28 is a pump and 29 is a tank.

According to the hydraulic circuit 23, after the accumulator 25 is filled with the pressurized oil, the circuit of the check valve 24 can be switched by the control valve 27 to shut off the pressurized oil in the oil passage 26. Therefore, if the pump is operated only when the support pin 12 and the fixing pin 15 are operated, even if a leak occurs in the hydraulic device, the hydraulic device can be replenished with the pressurized oil of the accumulator 25, and the hydraulic device can be stably pressurized. Supply of oil can be performed.

With this configuration, the power generation capacity of the ship can be reduced, and the power can be saved without operating the hydraulic motor and the pump motor for driving the support pins and the fixed pins. . Further, it is possible to avoid applying high-pressure oil (for example, equivalent to 21 MPa = 210 kgf / cm ² ) to the hydraulic cylinder for a long time.

In the case of the hydraulic circuit 23, when either the supporting pin 12 or the fixing pin 15 is pulled to release the connection, the control valve 27 is switched and the check valve 24 is opened, whereby the hydraulic oil is released. Will be performed after the

FIG. 8 is a side view showing a state before supporting the lifting container type propulsion machine in the state shown in FIG. This FIG.
The case where the lifting container type propulsion device 35 is supported and fixed in the raised storage state will be described below with reference to FIGS. 1 to 7 described above.

When the lifting container 35 is stored, the rod 7 of the hydraulic cylinder 6 is shortened (withdrawn). The operation control sequence is as follows.

1. The hydraulic cylinder 6 is shortened until it reaches the stroke end (in the state of the body), and the container 3 and the propulsion device 4 are raised to the upper limit positions.

2. At this upper limit position, the support pins 12 are protruded, and the end faces of the support pins 12 are brought into contact with the wall surfaces of the support holes 14 (FIG. 8).

3. Thereafter, the hydraulic pressure supplied to the hydraulic cylinder 6 is released. As a result, the holding force in the vertical direction is lost, and the vertical restraining force of the container 3 is substantially free only by the frictional resistance between the end face of the support pin 12 and the support hole 14.

4. When the holding force in the vertical direction is eliminated in this way, the container 3 starts to move downward by its own weight, and the support pins 12 slightly move within the gap 13 between the support holes 14 and the diameter of the support holes 14. The outer periphery (outer shape) of 12 hits the lower surface of the support hole 14 to position the container 3 (FIG. 1).

5. Next, the container fixing pin 15 provided at the lower part of the container 3 is protruded, and is pressed and fixed until the tip end surface of the fixing pin 15 hits the receiving seat 16 of the hull 1 (FIG. 1).

6. Thereafter, the support pins 12 and the fixing pins 15 continue to hold their positions. After the operation of the propulsion device 4 is started, the support pins 12 and the fixing pins 15 receive a thrust load such as sway of the hull.

Since the propulsion unit 4 is not operated in the raised storage state, no external force acts on the propulsion unit 4 and merely supports the entire weight of the propulsion unit 4 and the container 3. That is, they are fixed to eliminate vibration.

As described above, the large-diameter support hole 14 having the predetermined gap 13 is provided between the support pin 12 and the support pin 12 so that when the support pin 12 is inserted, it can be easily inserted by the gap 13 allowing an error. After the insertion, when the hydraulic pressure supplied to the hydraulic cylinder 6 is released and the restraining force of the container 3 is released by eliminating the vertical holding force, the container 3 moves downward by its own weight, The support pin 12 moves by the gap 13 between the pin 12 and the support hole 14 and can be positioned when the support pin 12 hits the lower surface of the support hole 14. Therefore, the positioning of the container 3 can be easily performed. Thereafter, the container fixing pin 15 provided at the lower portion of the container 3 is protruded and pressed until the end surface of the pin 15 hits the seat 16 of the hull 1, thereby fixing the lifting container type propulsion device 35.

When shifting from the raised storage state to the lowered operation state, hydraulic pressure is applied to the hydraulic cylinder 6, the container supporting pin 12 and the fixing pin 15 are operated in the shortening direction, and the hydraulic cylinder 6 is retracted. Oil is supplied to the cylinder 6 and the cylinder 6 is extended as follows.

FIG. 9 is a side view of the lifting container type propulsion device shown in FIG.
FIG. 11 is a side view showing a state in which the lifting container type propulsion device is moved upward by buoyancy from the state of FIG. 9 and the support pins are in contact with the support holes, and FIG. FIG. 12 is a front view of the lifting container type propulsion device shown in FIG. Hereinafter, a description will be given of a descending operation in which the above-described lifting container type propulsion device 35 is protruded from the ship bottom 30.

The operation sequence in the case where the rod 7 of the hydraulic cylinder 6 is extended (projected) to lower the container 3 to the state of the lowering operation is as follows.

1. The hydraulic cylinder 6 is operated to extend until the stroke end (with the body), and the propulsion device is lowered to the lower limit position.

2. In this embodiment, the position of the stroke end of the hydraulic cylinder 6 is set such that the center of the pin support hole 14 is equivalent to the center of the support pin 12. At this position, the support pin 12 is protruded and pushed out until the end face of the support pin 12 abuts against the wall surface of the support hole 14 (FIG. 10).

3. Release the hydraulic pressure supplied to the hydraulic cylinder. The holding force in the vertical direction is lost, and the restraining force of the container 3 becomes free.

4. The container 3 starts to move upward due to buoyancy, moves slightly in a gap 13 between the outer diameter (outer shape) of the support pin 12 and the inner diameter of the support hole 14, and the support pin 12 hits the upper surface of the support hole 14 and is positioned. (FIG. 11).

[0062] 5. Next, the container fixing pin 15 provided at the lower part of the container 3 is protruded, and the end face of the fixing pin 15 is brought into contact with the receiving seat 16 of the hull 1 and pressed to fix. The fixing pin 15 may protrude at the same time when the hydraulic cylinder 6 is operated to the stroke end.

6. The supporting pins and the fixing pins continue to hold their positions. After the operation of the propulsion device is started, the support pin 12 and the fixing pin 15 receive a thrust load during operation.

As described above, the large-diameter support hole 14 having the predetermined gap 13 is provided between the support pin 12 and the support pin 12 so that when the support pin 12 is inserted, it can be easily inserted by the gap 13 which allows an error. After insertion, when the hydraulic pressure supplied to the hydraulic cylinder 6 is released and the restraining force of the container 3 is released by eliminating the vertical holding force, the container 3 moves upward due to buoyancy, and The support pin 12 is moved by the gap 13 between the pin 12 and the support hole 14 so that the support pin 12 can be positioned by contact with the upper surface of the support hole 14. Therefore, the positioning of the container 3 can be easily performed. Thereafter, the container fixing pin 15 provided at the lower portion of the container 3 is protruded, and the end surface of the pin 15 is brought into contact with the receiving seat 16 of the hull 1 and pressed to fix the lifting container type propulsion device 35.

Since the propulsion unit is operated in this state, the container 3 is firmly fixed to the hull 1. In this state, the radial force due to the propeller last and the reaction force due to the turning of the propulsion device 4 are supported by both the support pins 12 and the fixing pins 15. Vertical positioning and support of weight and buoyancy are performed by container support pins 12.

According to this embodiment, the hydraulic circuit 2
After the supporting pin 12 and the fixing pin 15 are protruded by 3, the hydraulic pressure can be confined by the check valve 24. In addition, even if a load acts on these pins 12 and 15 to cause pressure oil to leak from the check valve 24, the check valve 24
Is suppressed by the pressure oil stored in the accumulator 25 provided on the back surface of the battery.

The provision of the accumulator 25 allows the pins 12, 15 to be temporarily supposed to be leaked from the check valve 24.
This accumulator 2
Since the high-pressure oil stored in the container 5 can be replenished, the container 3 can be restrained without causing “rattle”. That is, even if there is a small amount of oil leakage in the hydraulic circuit 23, the leakage amount can be replenished by the accumulator 25 and the predetermined position can be corrected by the container 3 itself.
The pump motor may be stopped even during the descending operation of the lifting container type propulsion device 35.

In the case of the lifting container type propulsion device 35,
Although the direction of thrust is not constant, the above function can be satisfied even under the condition of the configuration of the hydraulic circuit 23. If a pressure switch (not shown) is provided in the circuit to detect and maintain the accumulated pressure of the accumulator, it is possible to check the pressure drop and automatically operate the motor.

FIG. 13 is a schematic diagram showing the relationship between the forces acting on the support pins and the fixing pins. Here, as shown, the force relationship between the upper supporting pin 12 and the lower fixing pin 15 during the lowering operation is considered.

Assuming that the container 3 is a “beam”, a combined force “F” of the load caused by the propeller last and the load caused by turning acts on the propulsion unit 4. A reaction force "R12" acts on the container supporting pin 12 and a reaction force "R15" acts on the container fixing pin 15. From the calculation of the reaction force of the beam, R15 = F + R12, and R15 >> R12. That is, R12 exerts only a smaller force than R15. Therefore, according to the above-described configuration, only the vertical positioning and the load of about the weight are actually applied to the container supporting pins 12, and a large propulsion reaction force is received by the container fixing pins 15. The structure is advantageous in terms of strength.

On the other hand, a large load is applied to the container fixing pin portion. However, here, since the shape is such that the flat end portion of the pin is simply pressed, the structure is not such that excessive force is generated in terms of strength. Also, the hull 1 side is provided with the lower receiving seat 16 in a strong structure near the bottom of the hull, so that the hull 1 has a structure advantageous for receiving a large load.

When shifting from the descending operation state to the ascending storage state as described above, the propulsion unit 4 is stopped, hydraulic pressure is applied to the hydraulic cylinder 6, and then the support pins 12 and the fixing pins 15 are retracted. The hydraulic cylinder 6 is actuated to release the fixation to the hull 1, and thereafter, the hydraulic cylinder 6 is actuated and shortened until it becomes a body-mounted state.

As described above, the support pins 12 are
Since there is only one upper part, positioning is easy, and there is no problem even if the position is slightly shifted because the lower part is the pressing of the receiving seat 16 by the fixing pin 15. Therefore, the vertical position and the relative position of the upper and lower two support holes 14 do not have to be strict. Therefore, the construction of the shipyard can be easily performed without using nerves as in the related art.

Further, since the container 3 is restrained by two upper and lower pins without rattling, the container 3 does not move due to the rocking acceleration of the ship. Since there is no collision or the like, an excessive load does not act on the container 3 and the hull 1, and a configuration advantageous in terms of design and structure becomes possible.

FIG. 14 is a sectional view taken along the line III-III of FIG. 1 in the lifting container type propulsion machine showing the second embodiment of the present invention, and FIG.
FIG. 4 is a sectional view taken along line IV-IV of FIG. In the second embodiment, the support pins 12 and the support holes 14 and the fixing pins 15 and the receiving seats 16 are provided on the surface of the container 3 and the hull 1. The same components as those in the first embodiment described above are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 14, a container supporting pin 12 as a container supporting member is provided on the upper portion of the outer surface of the container 3. This container support pin 12
Are provided on each surface of the container 3 (two or more). In order to correspond to the support pins 12, two support holes 14 are provided on the hull 1 side, which are larger than the outer shape of the support pins 12 and have a predetermined gap 13 therebetween (in FIG. (One place). Upper support hole 14
Is used by inserting the support pin 12 during the ascending storage, and the lower support hole 14 is used for the support pin 1 during the lowering operation.
2 is used.

As shown in FIG. 15, a container fixing pin 15 as a container fixing member is provided below the outer surface of the container 3. This container fixing pin 15 is for pressing and fixing to the hull 1,
Two (plural) containers are provided on each surface of the container 3. Receiving seats 16 having a size corresponding to the fixing pins 15 are provided at two upper and lower positions on the hull 1 side so as to correspond to the fixing pins 15. The upper seat 16 is used by pressing the fixing pin 15 at the time of ascending storage.
The lower seat 16 is used by pressing the fixing pin 15 during the lowering operation.

FIG. 16 is a sectional view taken along the line III-III of FIG. 1 in the lifting container type propulsion machine according to the third embodiment of the present invention, and FIG.
FIG. 4 is a sectional view taken along line IV-IV of FIG. In the third embodiment, a support pin 12 is provided on the hull 1 side, and a receiving seat 16 is provided on the container 3 side. In this embodiment, the same components as those in the above-described first embodiment are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIG. 16, a container support pin 12 as a container support member is provided on the upper portion of the outer surface of the container 3. This container support pin 12
Are provided on each surface of the container 3 (two or more). In order to correspond to the support pins 12, two support holes 14 are provided on the hull 1 side, which are larger than the outer shape of the support pins 12 and have a predetermined gap 13 therebetween (in FIG. (One place).

As shown in FIG. 17, a container fixing pin 15 serving as a container fixing member is provided below the outer surface of the container 3. This container fixing pin 15 is for pressing and fixing to the hull 1,
Two (plural) containers are provided on each surface of the container 3. In order to correspond to the fixing pins 15, on the hull 1 side, seats 16 having a size corresponding to the fixing pins 15 are provided at two upper and lower positions (one position in the figure). Thus, the support pins 12 and the fixing pins 15 do not need to be provided on the container 3 side, and may be provided on the hull 1 side.

FIG. 18 is a sectional view taken along the line III-III of FIG. 1 in the lifting container type propulsion device showing the fourth embodiment of the present invention. In the fourth embodiment, the guide 9 in the above-described second embodiment is replaced with a rectangular groove 31 provided on the hull 1 side.
And a rectangular guide 32 on the container 3 side which moves up and down along the rectangular groove 31. In this embodiment, the same components as those in the above-described first embodiment are denoted by the same reference numerals, and description thereof is omitted.

According to the fourth embodiment, the rectangular guide 32 provided on the container 3 side is moved up and down along the rectangular groove 31 provided on the hull 1 side, and
5 can be raised and lowered in the storage room 2. The configuration of the guide 9 may be concave on the container 3 side, convex on the hull 1 side, and may be in any direction.

FIG. 19 is a sectional view taken along the line III-III of FIG. 1 in a lifting container type propulsion device showing a fifth embodiment of the present invention. In the fifth embodiment, the inside of the support hole 14 for inserting the support pin 12 and the seat 16 for pressing the fixing pin 15 are provided.
Is provided with an elastic member 33 (only the support hole 14 is shown in the figure). Also in this embodiment, the guide 9 is formed by a rectangular groove 31 and a rectangular guide 3 that moves up and down along the rectangular groove 31.
It consists of two. In this embodiment, the same components as those in the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted.

According to the lifting container type propulsion device 35 of the fifth embodiment, even when the support pin 12 and the fixing pin 15 are extended and the hull 1 is pressed, they are in contact with each other via the elastic member 33. Therefore, vibration transmission can be reduced or attenuated.

It is to be noted that the other components can be combined with each other in the above-described embodiment to form another embodiment.

Further, the above-described embodiment is one embodiment, and various changes can be made without departing from the gist of the present invention, and the present invention is not limited to the above-described embodiment.

[0087]

The present invention is embodied in the form described above and has the following effects.

At the time of ascending or retracting operation, the container supporting member is inserted into a supporting hole larger than the container supporting member provided between the container and the hull, and the outer surface thereof is brought into contact with the supporting hole. The container can be supported with high positioning accuracy, and in this state, the container can be supported and fixed by pressing the supporting member against the receiving seat, so that the container can be firmly fixed in a short installation time.

[Brief description of the drawings]

FIG. 1 is a side view showing a state in which a lifting container type propulsion device according to a first embodiment of the present invention is stored in a ship when it is raised and stored.

FIG. 2 is a view taken in the direction of the arrow II shown in FIG.

FIG. 3 is a cross-sectional view of the lifting pin type propulsion device shown in FIG.

FIG. 4 is a sectional view taken along the line IV-IV showing a fixing pin portion of the lifting container type propulsion device shown in FIG.

FIG. 5 is a longitudinal sectional view showing a suspension flange portion of a hydraulic cylinder as a lifting member.

FIG. 6 is a longitudinal sectional view showing an example of a seat for a container fixing pin.

FIG. 7 is a hydraulic circuit diagram for operating the support pins when the up-and-down container type propulsion device is raised and retracted and when it is lowered.

8 is a side view showing a state before supporting the lifting container type propulsion device in the state shown in FIG. 1. FIG.

FIG. 9 is a side view of the elevating container type propulsion device shown in FIG. 1 during a descent operation in which the elevating container type propulsion device projects from the bottom of the ship.

FIG. 10 is a side view showing a state in which the lifting container type propulsion device moves upward by buoyancy from the state of FIG. 9 and the support pins are in contact with the support holes.

11 is a view as viewed in the direction of the arrow XI shown in FIG. 10;

FIG. 12 is a front view of the lifting container type propulsion device shown in FIG.

FIG. 13 is a schematic diagram illustrating a relationship between forces acting on a support pin and a fixing pin.

FIG. 14 is a sectional view taken along the line III-III of FIG. 1 in the elevating container type propulsion device showing the second embodiment of the present invention.

15 is a cross-sectional view of the lifting container type propulsion device shown in FIG. 14 taken along the line IV-IV of FIG. 1;

FIG. 16 is a sectional view taken along the line III-III of FIG. 1 in the lifting container type propulsion device showing the third embodiment of the present invention.

17 is a sectional view of the lifting container type propulsion device shown in FIG. 16 taken along the line IV-IV of FIG. 1;

FIG. 18 is a sectional view taken along the line III-III of FIG. 1 in the lifting container type propulsion device showing the fourth embodiment of the present invention.

FIG. 19 is a sectional view taken along the line III-III of FIG. 1 in the lifting container type propulsion device showing the fifth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Hull 2 ... Storage room 3 ... Container 4 ... Propulsion device 5 ... Upper suspension beam 6 ... Hydraulic cylinder 7 ... Rod 8 ... Hanging flange 9 ... Guide 10 ... Guide 11 ... Groove 12 ... Container support pin 13 ... Clearance DESCRIPTION OF SYMBOLS 14 ... Support hole 15 ... Container fixing pin 16 ... Receiving seat 17, 18 ... Corner part 19 ... Slide bearing 20, 21 ... Gap 22 ... Damping material 23 ... Hydraulic circuit 24 ... Check valve 25 ... Accumulator 26 ... Oil passage 27 ... Control valve 28 ... Pump 29 ... Tank 30 ... Ship bottom 31 ... Rectangular groove 32 ... Rectangular guide 33 ... Elastic material 34 ... Height adjusting liner 35 ... Elevating container type thruster 36 ... Draft surface

Claims (11)

[Claims] An elevating member for projecting or storing a container from a ship bottom is provided. A plurality of container supporting members for supporting the container are provided between an upper portion of the container and a hull; A large-sized container having a predetermined gap therebetween is provided with two upper and lower support holes provided corresponding to the storage position and the operation position of the container, and a plurality of fixing holes for fixing the container between the lower part of the container and the hull. The fixing member and two upper and lower receiving seats provided corresponding to the fixing member are provided, and the fixing member is inserted into the supporting hole at the time of fixing when ascending or retracting or during descending operation. An elevating and lowering container type propulsion device in which the outer surface of the supporting member is brought into contact with the supporting hole by eliminating a gap between the supporting members, and the fixing member is pressed against the receiving seat to support and fix the container. 2. The lifting container type propulsion device is configured such that the total weight of the propulsion device and the container is greater than the buoyancy at the ascending storage position, and the vertical force becomes a downward load. By shortening the elevating member for raising and lowering the propulsion device, the propulsion device is raised upward and the support member is inserted into the support hole provided at the opposed position, and when the container restraining force of the elevating member is removed, the container becomes 2. The lifting container type propulsion device according to claim 1, wherein the supporting member moves downward by gravity to position the supporting member against a lower portion of the supporting hole. 3. The support hole is arranged so that the center of the support hole is substantially at the center of the support member when the lifting member is shortened to raise the propulsion device to the upper limit position. Lifting container type propulsion machine. 4. The lifting container type propulsion device is configured such that, in the lowering operation position, the total buoyancy of the propulsion device and the container becomes larger than the weight, and the vertical force becomes an upward load. The elevating member for elevating and lowering the propulsion device is extended to lower the propulsion device and insert the support member into the support hole provided at the opposing position, and remove the container restraining force of the elevating member. 2. The lifting container type propulsion device according to claim 1, wherein the supporting member is moved upward by buoyancy so that the supporting member comes into contact with an upper portion of the supporting hole and is positioned. 5. The support hole is arranged so that the center of the support hole is substantially at the center of the support member when the elevating member is extended to lower the propulsion unit to the lower limit position. Lifting container type propulsion machine. 6. The lifting container type propulsion device according to claim 1, wherein the supporting member and / or the fixing member are provided at a corner of the container or the hull. 7. A non-return valve, wherein the supporting member and / or the fixing member is constituted by a hydraulic device, and the operating hydraulic circuit of the hydraulic device shuts off oil supplied to the supporting member and / or the fixing member. And an accumulator located on the upstream side of the check valve, and the working hydraulic circuit is provided with a function of switching the check valve circuit to shut off after filling the accumulator with pressurized oil. The lifting container type propulsion device according to claim 1, wherein: 8. The lifting member is constituted by a hydraulic cylinder, a suspension flange is provided on an upper portion of the hydraulic cylinder, and the suspension flange is held by an upper suspension beam provided on a hull, and upper and lower surfaces of the suspension flange are provided. 2. The lifting container type propulsion device according to claim 1, wherein a bearing member is provided on the vehicle and gaps are provided in a vertical direction and a horizontal direction. 9. The lifting container type propulsion device according to claim 1, further comprising a guide provided between the outer surface of the container and the hull for guiding the lifting of the container. 10. The lifting container type according to claim 1, wherein a supporting hole or a seat provided corresponding to the container supporting member or the fixing member is filled with a vibration damping material for reducing vibration transmission. Thruster. 11. A supporting hole or a receiving seat provided corresponding to a container supporting member or a fixing member is formed of an elastic body,
2. The lifting / lowering propulsion device according to claim 1, wherein an elastic body is provided in the support hole or the seat to reduce vibration transmission.