JPS61249899A - Axial driving power generator for ship - Google Patents

Abstract

PURPOSE:To improve the contact between the output gears on a propulsion shaft and the input shaft gears of a power generator and also improve their durability by providing an inter-axis distance fixing plate that keeps the inter- axis distance between these gears. CONSTITUTION:A flywheel 12 is mounted on a propulsion shaft 2 and an output gear 11 comprising a ring gear is mounted on the one-side surface of this fly wheel 12 through an elastic joint 13 concentrically with the propusion shaft 2. The input shaft 9 of a rotation control device 7 is provided in parallel to said propulsion shaft 2 and an input shaft gear 10 that engages with said output gear 11 is mounted on the tip. In addition, an inter-axis distance fixed plate 22 that keeps the inter-axis distance between the output gears 11 and input shaft gears 10 is provided between these gears. A bearing 23 that rotatably supports said input shaft 9 and a bearing 24 that rotatably supports the inside circumference of the output gears 11 are mounted on this inter-axis distance fixing plate 22. As a result, even if the bottom of a ship is deformed by water pressure, the inter-axis distance can always be kept constant.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a marine shaft drive power generation device that obtains driving force from the propulsion shaft of a ship and generates electricity necessary in the ship, and particularly relates to a shaft drive power generator that is attached to the propulsion shaft. The present invention relates to a shaft-driven marine shaft-driven power generation device that is improved so that the distance between the output gear and the input shaft gear of the power generation device is kept constant.

[Prior Art] As shown in Fig. 3, an engine 3 that rotationally drives a propulsion shaft 2 is installed on a double-bottomed ship bottom 1 via a mounting base 4, and is separated from the engine 3 to drive a marine shaft. A power generation device 15 is provided. This marine shaft drive power generator 5 is a rotary IIJ installed on the ship bottom 1 via an installation stand 6.
III system [consisting of a generator 8 with 7 attached, its input shaft 9
A gear 10 (referred to as an input shaft gear) mounted on the propulsion shaft 2 is meshed with a gear 11 (referred to as an output gear) mounted on the propulsion shaft 2. Specifically, the output gear 11 is attached to a flywheel 12 attached to the propulsion shaft 2 via an elastic joint 13 and a bearing 14.

[Same problem to be solved by the invention] However, as described above, since the marine shaft drive generator 5 is installed separately from the engine 3, if the bottom 1 of the ship is deformed by water pressure, the input gear 10 and the output The distance between the axes of the gear 11 changes, the backlash increases, and the impact force on the tooth surface increases, causing problems such as decreased durability and inability to rotate. Furthermore, there was a problem that the contact of the tooth surface was biased to one side.

[Object of the Invention] The present invention was made to solve the problems of the prior art described above, and its purpose is to maintain a constant distance between the input shaft gear and the output gear even if the bottom of the ship is deformed. To provide a shaft-driven power generating device for a marine vessel which can maintain good tooth contact and which does not cause a decrease in durability or an inability to rotate.

[Summary of the Invention] In order to achieve the above object, the present invention provides an inter-axle distance fixing plate between the output gear on the propulsion shaft and the input shaft gear of the power generator to keep the inter-axle distance constant. It was established.

[Example] An example of the present invention will be described below in detail based on the accompanying drawings.

In Fig. 1, reference numeral 20 denotes an installation stand installed on the double-bottomed ship bottom 1, and on this installation stand 20 is a low-speed diesel engine 3, which is the rotational driving source for the propulsion shaft 2, and a marine shaft drive driven by the low-speed diesel engine 3. A power generator w5 is also provided.

The marine shaft drive power generation device 5 consists of a generator 8 and a planetary gear type rotation control device 17 that controls and applies the rotational driving force led from the propulsion shaft 2 to the power generation device 8 at a constant four rotation speed. The output shaft of the rotation control device w7 and the input shaft of the power generator 8 are connected via a clutch 21.

On the other hand, a flywheel 12 is attached to the propulsion shaft 2 as shown in FIGS. 1 and 2.
An output gear 11 consisting of a ring gear is attached to one side of the propulsion shaft 2 through an elastic joint 13 so as to be concentric with the propulsion shaft 2 . Note that the elastic joint 13 absorbs torsional vibration of the propulsion shaft 2.

The rotation 111111 device 70 input shaft 9 is the propulsion shaft 2
An input shaft gear 10 that meshes with the output gear 11 is attached to the tip end thereof.

An inter-axle distance fixing plate 22 is provided between the output gear 11 and the input shaft gear 10 to keep the inter-axle distance constant. This center distance fixing plate 22 includes a bearing 23 that rotatably supports the input shaft 9 and a bearing 2 that rotatably supports the inner circumference of the output gear 11 consisting of a ring gear.
4 is installed. Further, the inter-wheel distance fixing plate 22 is divided into a plurality of parts and assembled by tightening bolts, so that maintenance can be easily performed. Further, one end of the center distance fixing plate 22 is fixed to the casing of the rotation control device 7, and the other end is fixed to the installation base 20 via a spring 25 for absorbing vibrations.

In this way, since the inter-axle distance fixing plate 22 is provided between the output gear 11 of the propulsion shaft 2 and the input gear 10 of the power generator 80 to keep the distance between these axes constant, even if the bottom 1 is deformed by water pressure. Even if this happens, the distance between the shafts can always be kept constant, and therefore the backlash can be kept constant, the impact force on the tooth surface does not increase due to an increase in packlash, and good tooth contact is maintained. Therefore, there is no decrease in durability or inability to rotate. In particular, in the embodiment, since the integrated installation base 20 is adopted, the influence of deformation of the ship bottom 1 is small.

[Effects of the Invention] In summary, the present invention provides the following excellent effects.

(1) A shaft distance fixing plate is installed between the output gear of the propulsion shaft and the input shaft gear of the power generator to keep the distance between these shafts constant, so even if the bottom of the ship is deformed, the distance between the shafts can be maintained. Since the distance can always be kept constant and good tooth contact is maintained, the gear does not deteriorate in durability or become unable to rotate.

(Since the structure is simple, it is easy to manufacture and can be manufactured at low cost.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view showing an embodiment of a marine shaft drive power generator according to the present invention, FIG. 2 is an enlarged sectional view of the same essential parts, and FIG. 3 is a side view showing an example of a conventional marine shaft drive power generator. FIG. In the figure, 2 is a propulsion shaft, 3 is a rotational drive source, 8 is a power generator, 1
0 is an input shaft gear, 11 is an output gear, and 22 is an inter-axle distance fixing plate.

Claims (1)

[Claims] In a marine shaft drive power generation device, the rotational drive source of the propulsion shaft and the power generation device are provided separately, an output gear is attached to the propulsion shaft, and an input shaft gear of the power generation device is meshed with the output gear. A marine shaft-driven power generator, characterized in that an inter-axle distance fixing plate is provided between the input gear and the input gear for keeping the inter-axle distance constant.