JPH0671399U - Revolving thruster and its power feeding device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a swivel thruster and its power feeding device that have power generation capacity as long as the main engine is operating. In a swivel thruster T having a drive shaft system D having an input shaft 8 connected to a drive shaft 7 driven by a main engine, and swivel drive means for swiveling a thruster T, a shaft driven by the drive shaft system D. The drive generator 10 was mounted on the platform.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a swivel thruster for a marine vessel and its power supply device. The present invention relates to a power supply device.

[0002]

[Prior art]

 As shown in the side sectional view shown in FIG. 5 and the block diagram shown in FIG. 6, the conventional swivel thruster has a swivel thruster T installed in the opening h of the hull H, which is connected to the main engine E. The power of the drive shaft 51 is transmitted to the clutch 53, the bevel gear mechanism 54, the vertical output shaft 55, and the propeller shaft 56 via the input shaft 52 to drive the propeller P.

A turning mechanism for turning and steering the turning thruster T drives a hydraulic pump 58 with a gear mechanism 57 provided at an end portion of the input shaft 52, and a hydraulic oil from the hydraulic pump 58 is driven by the hydraulic pump 58. Is supplied to the hydraulic motor 60 via the valve unit 59, and the turning pinion 61 connected to the shaft of the hydraulic motor 60 is turned to turn the turning gear 62 meshed with the turning pinion 61, thereby turning The duct 63 including the propeller P rotates together with the struts S integrally formed with the gear 62 to generate thrust in an arbitrary direction.

On the other hand, as shown in the block diagram of FIG. 6, the power supply used onboard the ship drives the generator 65 by the generator engine 64 provided in the engine room or the like, and generates the electricity generated by the generator 65. It is supplied to the inside of the ship via the switchboard 66.

As a conventional technique of this kind, there is a hydraulic thrust type thruster disclosed in Japanese Utility Model Laid-Open No. 56-25699. The invention described in this publication drives the screw propeller to rotate and rotate with the same hydraulic power source. This is for the purpose of doing so, and is not a device related to power generation, which is a feature of the present invention.

[0006]

[Problems to be solved by the device]

 By the way, in the case of an ordinary ship, if the generator engine 64 or the generator 65 fails for some reason and the inboard power source fails, an auxiliary (emergency) generator (not shown) is activated to generate electricity. It will be. However, when an auxiliary generator is used, the auxiliary generator engine will usually be provided along with the auxiliary generator. Therefore, since it is necessary to constantly maintain the engine for the auxiliary generator together with the auxiliary generator, it requires a great deal of labor and cost to maintain and manage them.

Further, the generator engine 64 has a high initial cost and requires a great deal of expense and labor for maintenance such as maintenance and management. In other words, the generator engine 64, which is constantly operating, requires periodical inspection or maintenance, and therefore requires disassembly / assembly and the like each time, resulting in high running costs.

Further, since the generator 65, the generator engine 64, and the auxiliary generator and the auxiliary generator engine need to be installed in a limited space such as an engine room, their installation, piping, and wiring are required. Etc. requires a great deal of work.

In view of the above-mentioned problems, an object of the present invention is to provide a swirl type thruster having a power generation capacity as long as the main engine is operating, and a power supply device thereof.

[0010]

[Means for Solving the Problems]

 To achieve the above object, the swivel thruster of the first invention of the present invention comprises a swivel thruster having a drive shaft system having an input shaft connected to a drive shaft driven by a main engine, and swivel drive means for swiveling the thruster. In the thruster of the type, a shaft drive generator driven by the drive shaft system is provided.

In addition, the power supply device for the swivel thruster according to the second aspect of the present invention drives the propeller by a drive shaft system having a drive shaft connected to the main engine and an input shaft connected to the drive shaft. In an electrohydraulic swivel type thruster in which the thruster is swung by the electrohydraulic swivel drive means, a shaft drive generator driven by the main machine is provided, and the shaft drive generator is electrically connected to the electrohydraulic swivel drive means. It is characterized by

Further, a swivel thruster according to a third aspect of the present invention is a swivel thruster having a drive shaft system having an input shaft connected to a drive shaft driven by a main engine, and swivel drive means for swiveling the thruster. A shaft drive generator driven by the drive shaft system is provided on the platform.

[0013]

[Action]

 According to the swivel thruster of the first invention having the above structure, since the shaft drive generator is driven by the drive shaft system driven by the main engine, as long as the main engine is operating, there is power generation capacity. This will be a swivel thruster that can drive the swivel drive mechanism that swivels the thruster with electricity generated by the generator, and can also generate power from the onboard power supply.

According to the power supply device for a swivel type thruster of the second invention having the above-mentioned configuration, since the shaft drive generator driven by the main engine generates electric power, as long as the main engine is operating, the thruster of the thruster together with the inboard power supply is operated. A turning power source can be secured. Therefore, the main engine drives the shaft-driven generator, which eliminates the need for a generator engine.

Further, according to the swivel thruster of the third invention having the above structure, since the shaft drive generator is provided on the platform, it is not necessary to provide the generator inside the ship, and the space in the ship can be reduced.

[0016]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view showing an overall structure of a swivel thruster according to the present invention. As shown, a swivel gear 1 provided on an upper portion of a strut S and a swivel pinion 2 provided on a shaft of a hydraulic motor 3 are shown. Are connected to each other, and a pipe from the hydraulic valve unit 4 is connected to the hydraulic motor 3. The hydraulic valve unit 4 is connected to a remote control device 14 that is a control device and a hydraulic pump 5 that supplies pressure oil that is a drive source of the hydraulic motor 3. The hydraulic pump 5 is an electric motor. Driven by 6. In this embodiment, the hydraulic motor 3, the hydraulic valve unit 4, the hydraulic pump 5, and the electric motor 6 constitute an electric hydraulic swing drive means O.

On the other hand, a gear mechanism 12 is provided at the tip of an input shaft 8 of a drive shaft system D including a drive shaft 7 connected to the main machine and an input shaft 8 connected to the drive shaft 7. The mechanism 12 drives the shaft drive generator 10 via the shaft coupling 9. The shaft drive generator 10 is electrically connected to a generator controller 11, and the shaft drive generator 10 constitutes a main part of a power supply device for generating a turning power supply together with an onboard power supply.

These devices are arranged on the platform F of the swivel type thruster T, and the platform F is arranged at the opening of the hull H.

Further, the generator controller 11 is electrically connected to the switchboard 13 together with the electric motor 6, and supplies inboard power via the switchboard 13. In the case of a fixed pitch propeller (FPP) swivel thruster T, the generator controller 11 controls frequency fluctuations and waveforms due to fluctuations in the rotational speed of the propeller P, and noise generated from those devices It also acts to prevent it from being transmitted inside the ship. Depending on the rotation speed of the input shaft 8, the input shaft 8 and the shaft drive generator 10 may be directly connected without the gear mechanism 12. Conversely, a secondary constant rotation device such as a slip clutch may be inserted between the input shaft 8 and the generator 10 to keep the frequency constant.

The power generation and the turning operation by the turning thruster T of the first embodiment having the above-mentioned configuration will be described based on the block diagram of the first embodiment shown in FIG. As shown in the figure, the propeller P of the swivel thruster T is driven by an input shaft 8 via a drive shaft 7 connected to the main engine E, and a shaft drive power generation is performed via a gear mechanism 12 provided on the input shaft 8. Since the machine 10 is being driven, as long as the main shaft E is driving the input shaft 8, the generator 10 is always generating power. Therefore, as long as the main engine E is operating, the power generation capacity is not lost, and the power supply to the electric motor 6 that is driven to rotate together with the onboard power supply can be ensured, and the hydraulic pump 5 driven by the electric motor 6 is always at a predetermined level. Pressure oil is supplied to the hydraulic valve unit 4.

Then, when a signal is sent from the remote control system 14 to the hydraulic valve unit 4 to turn the turning thruster T, the hydraulic valve unit 4 performs a predetermined operation to move the hydraulic motor 3 in a predetermined direction at a predetermined angle. Rotate. In this way, the turning thruster T can be turned as long as the main engine E is operating. The inboard power is supplied from the generator controller 11 to the inboard via the switchboard 13.

Next, a second embodiment in which the propeller P of the orbiting thruster T in the first embodiment is constituted by a variable pitch propeller (CPP) will be described below with reference to the block diagram shown in FIG. This second embodiment eliminates the need for an expensive generator controller 11 (for example, an inverter) by setting the propeller to CPP and keeping the rotation speed of the main engine E constant, thereby significantly reducing the equipment cost required for the controller 11. ing. On the contrary, even if the propeller is still FPP and a known constant rotation device such as a slip clutch is inserted between the input shaft 8 and the shaft drive generator 10, even if the rotation speed of the input shaft 8 fluctuates. The rotation speed of the secondary shaft drive generator 10 may be constant. Similar to the first embodiment, the shaft drive generator 10 has the same structure for generating the power supply for turning as well as the power supply for turning, and the other same structures are designated by the same reference numerals and the description thereof will be omitted. .

By the way, in a tugboat or the like which is often equipped with a swing type thruster T, there are many biaxial ships, and usually two thrusters T are equipped. On the other hand, marine regulations require a backup generator, so it is necessary to equip two generators.

Therefore, as in the third embodiment shown in FIG. 4, each of the swivel thrusters T provided on both sides is equipped with a shaft drive generator 10, and each shaft drive generator 10 is required. By switching accordingly, one of the shaft drive generators 10 can be used as a standby generator and the other shaft drive generator 10 can be used as a main generator. In this case, if you do not want to operate one shaft drive generator 10 under continuous load, put a clutch that turns on in the gear mechanism 12 into the gear mechanism 12 and keep it normally stopped or run the shaft drive generator 10. It is recommended to turn it off electrically and let it idle when there is no load. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

According to the third embodiment configured in this way, by properly using the two shaft drive generators 10, one of the shaft drive generators 10 can be used as a standby generator, and If the electricity generated by the shaft drive generator 10 is controlled by the switchboard 13 or the like, the two generators can be used most efficiently.

In addition, when the electricity generated by the two shaft drive generators 10 is a sine wave, the capacity of both generators may be halved and the generators may be operated individually. Good. Furthermore, if it is desired to secure the inboard power supply even when the drive shaft 7 is stopped, a small auxiliary generator engine 64 driven auxiliary generator 65 that generates the necessary amount of electricity when the shaft is stopped must be installed. Alternatively, if there is an inboard device that cannot accept a sine wave, it may be supplied from the generator 65 even while the drive shaft 7 is operating. If the electricity generated by the shaft-driven generator 10 is a rectangular wave and the electricity generated by the engine-driven generator 65 is a sine wave, the electricity may be switched as needed. In addition, landline trains may be taken in when berthed, and these proposals may be adopted as needed as appropriate.

As described above, according to the present invention, since the power source for turning of the turning thruster T and the power supply for the ship are generated by the shaft drive generator 10, the turning thruster T is operated as long as the main engine E is operating. A swing thruster T having a swing capability can be realized as long as the main engine E is driven.

Further, by providing the shaft drive generator 10 on the platform F, the swing thruster T itself has the generator 10 for generating its own power source for turning and the power source onboard, so maintenance / inspection is possible. At times such as when the swivel thruster T and the power feeding device are integrally removed and can be carried into the yard for maintenance, work efficiency can be greatly improved.

Further, since each device is provided on the platform F of the swivel thruster T, the swivel thruster T is installed in order to simplify the connection with the equipment on the hull side when the swivel thruster T is installed on a ship. Therefore, it is not necessary to specially design the equipment on the hull side, and it is possible to reduce the labor and the like required to install the swivel thruster T.

Further, since it is not necessary to provide a generator on board, the space for installation in the engine room can be greatly reduced, and maintenance / management of the generator engine 64, which has been conventionally required, can be performed. It eliminates the huge cost and labor required for maintenance. The cost when the engine 64 for the generator is reduced is, for example, about several million in the 120 to 150 KVA class, and the maintenance cost of the engine increases in proportion to the number of units and the number of cylinders. Therefore, reducing the engine itself is extremely effective from the viewpoint of saving a great deal of cost and labor. In this case, the shaft drive generator 10 may be directly attached to the bow side of the main engine E or may be attached via a gearbox.

The generator controller 11, the switchboard 13 and the like in the first to third embodiments may be integrally configured and are not particularly limited as long as they have the functions described above. .

[0032]

[Effect of device]

 According to the present invention, since the shaft drive generator driven by the main engine generates the power for inboard thruster together with the inboard power, the generated electricity can drive the electrohydraulic swivel drive means for swiveling the thruster together with the inboard power. it can. Therefore, the conventional generator engine is eliminated, so that the installation space required for the generator engine is not required and the cost and labor required for maintenance can be greatly reduced.

Further, since the shaft drive generator is driven by the drive shaft system, the thruster and the power feeding device can be integrally configured, so that maintenance and inspection can be easily performed, and further the shaft drive power generation can be performed. If the machine is installed on the platform, the space for installing the power supply device inside the ship can be reduced.

Furthermore, since the electric motor generated by the shaft-driven generator can drive the electric motor that turns the thruster together with the onboard power source, the generator engine is not required and the engine equipment cost can be significantly reduced. There is also an effect.

[Submission date] June 18, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0024

[Correction method] Change

[Correction content]

Therefore, as in the third embodiment shown in FIG. 4, each of the swivel thrusters T provided on both sides is equipped with a shaft drive generator 10, and each shaft drive generator 10 is required. If the shaft drive generator 10 can be switched accordingly, one shaft drive generator 10 can be used as a standby generator and the other shaft drive generator 10 can be used as a main generator. In this case, the two shaft drive generators 10 can be appropriately switched and used, and the other shaft drive generator 10 is stopped while one shaft drive generator 10 is in operation. The shaft drive generator 10 may be stopped by putting a clutch in the gear mechanism 12 and stopping it, or by electrically turning it off and idling it in a no-load state. Further, the shaft drive generator 10 may be switched artificially or automatically when the operating shaft drive generator 10 fails in power supply. The same components in the third embodiment as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

[Brief description of drawings]

FIG. 1 is a side sectional view showing the overall structure of a swivel thruster according to the present invention.

FIG. 2 is a block diagram showing a swivel thruster according to a first embodiment of the present invention shown in FIG.

FIG. 3 is a block diagram showing a second embodiment of the swivel type thruster according to the present invention.

FIG. 4 is a block diagram showing a third embodiment in which the swivel thruster according to the present invention is applied to a biaxial ship.

FIG. 5 is a side sectional view showing a conventional swivel type thruster.

FIG. 6 is a block diagram showing the conventional swivel thruster shown in FIG.

[Explanation of symbols]

 1 ... Slewing gear 2 ... Slewing pinion 3 ... Hydraulic motor 4 ... Hydraulic valve unit 5 ... Hydraulic pump 6 ... Electric motor 7 ... Drive shaft 8 ... Input shaft 9 ... Shaft joint 10 ... Shaft drive generator 11 ... Generator controller 12 … Gear mechanism 13… Switchboard 14… Remote control system T… Swiveling thruster F… Platform S… Struts P… Propeller H… Hull E… Main engine D… Drive shaft system O… Electric hydraulic swivel drive means

Claims (3)

[Scope of utility model registration request] 1. A swivel thruster having a drive shaft system having an input shaft connected to a drive shaft driven by a main engine, and swivel drive means for swiveling the thruster, wherein a shaft drive generator driven by the drive shaft system is provided. A swivel thruster characterized by being provided. 2. An electric hydraulic swing type thruster in which a propeller is driven by a drive shaft system having a drive shaft connected to a main engine and an input shaft connected to the drive shaft, and the thruster is rotated by an electric hydraulic swing drive means. An electric-hydraulic-swing-type power supply device for an electric-hydraulic swivel thruster, characterized in that a shaft-driving generator driven by the main machine is provided, and the shaft-driving generator is electrically connected to the electric-hydraulic swivel driving means. 3. A swivel thruster having a drive shaft system having an input shaft connected to a drive shaft driven by a main engine, and swivel drive means for swiveling the thruster, wherein a shaft drive generator driven by the drive shaft system is provided. A swivel thruster characterized by being installed on the platform.