JPH0637924B2 - Marine deceleration reversing machine - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speed reducer / reverse gear mainly mounted on small and medium-sized ships.

2. Description of the Related Art Generally, a speed reducer / reverse gear mounted on a ship is installed with its output shaft inclined with respect to the hull. On the other hand, it is desirable to install the engine in a horizontal state in small and medium-sized ships where the ceiling of the engine room in which the engine is mounted cannot be made too high due to the relationship with the deck. In that case, the power from the engine must be transmitted to the propeller outside the hull at an angle. As such a material, there is one described in JP-A-60-237246.

That is, in the above-mentioned conventional one, the output shaft that connects the propeller shaft and the clutch shaft that engages and disengages the power with the output shaft are mounted in parallel with each other, and the clutch shaft and the output shaft are attached to each other. By mounting the input shaft in a tilted state and connecting the input shaft to the engine side, the power is transmitted from the horizontally installed engine to the tilted propeller shaft.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the above-mentioned conventional one, the input shaft is located between the output shaft and the clutch shaft with respect to the clutch shaft and the output shaft that are arranged in parallel in the vertical direction. The input gear and the gear of the input shaft are engaged with each other on the lower side, and the input shaft and the clutch shaft are arranged at substantially the same height position. In such a configuration, the output shaft of the engine is installed so as to be at the same height as the input shaft.On the other hand, in a structure where the oil pan at the bottom of the engine is deep, the engine is There is a case where it cannot be installed at the same height as the above and it is desired to install it at a relatively high position. However, there is a disadvantage that the output shaft and the input shaft of the engine cannot be directly connected to each other.

The present invention solves such a conventional problem, and when the oil pan of the engine has a normal depth, the engine can be installed at a relatively low position with respect to the reduction / reverse gear. On the other hand, when the oil pan of the engine is deep or when it is necessary to install the engine at a position higher than usual, a reduction / reversing machine that can be connected to the output shaft of the engine at a position higher than the clutch shaft. It is intended to provide.

Means for Solving the Problems In order to achieve the above object, in the present invention, the clutch shaft and the output shaft are arranged in parallel inside the main body case while the gear case is attached to the front side of the main body case. Then, one of the clutch shafts is extendedly arranged in the gear case, an input gear is provided in the extension part of the clutch shaft, and the above-mentioned gear case includes an upper part and a lower part in the gear case of the extension part of the clutch shaft. In the above, two transmissions, which are interlockingly connected to the clutch shaft via a gear transmission mechanism with the input gear and are vertically inclined with respect to the axial direction of the clutch shaft, are parallel to each other. A shaft is attached, and one of the front ends of the transmission shafts opposite to the propeller shaft connected to the rear end of the output shaft can be selected and connected to the engine side.

Operation With the above configuration, the output shaft of the engine is
One of the transmission shaft above the clutch shaft and the transmission shaft below can be selected and connected. Therefore, if you want to set the output shaft of the engine relatively high, set the transmission shaft on the upper side low. If desired, by using the lower transmission shaft, the same reduction / reverse gear can be used in each case.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 show an embodiment 1 in which an angle drive is used.
Is shown.

In FIG. 1, (1) shows a main body case of a reduction / reversing machine (2) which is generally used in this type, and an output shaft (3) is laterally oriented in a lower half portion of the main body case (1). It is located in. The output shaft (3) is supported at the front end side on the front side wall (4) of the body case (1) via a bearing (5), and at the rear side likewise at the rear side wall (6) of the body case (1). It is supported via 7). An output shaft coupling (9) is externally fitted and fixed to the output shaft end (8) which penetrates the rear side wall (6) and projects rearward of the main body case (1). Also, the body case (1) of the output shaft (3)
An output large gear (10) is externally fitted and fixed to an intermediate portion in the inside.

On the other hand, in the upper half portion of the main body case (1), a forward clutch shaft (12) that constitutes a forward unit (11) is provided above the output shaft (3) in parallel with the output shaft (3). It is arranged. The front side of the forward clutch shaft (12) is supported by the front side wall (4) of the main body case (1) via a bearing (13), and its tip portion penetrates the front side wall (4). It projects forward. The rear end side of the forward clutch shaft (12) is similarly supported by the rear side wall (6) of the main body case (1) via the bearing (14). On the front side of the forward clutch shaft (12) in the main body case (1), a forward small gear (15) that constantly meshes with the output large gear (10).
Are supported in an idle state. A reverse drive gear (16) fixed integrally with the forward clutch shaft (12) is arranged behind the forward small gear (15). Reference numeral (17) denotes a multi-plate clutch portion between the forward small gear (15) and the reverse drive gear (16) for engaging and disengaging the power between them.

As shown in FIG. 2, a reverse unit having the same structure as the forward unit (11) is provided on one side between the forward clutch shaft (12) and the output shaft (3). (18)
Are to be placed. The reverse unit (18) is integrated with the reverse clutch shaft (19) on the reverse clutch shaft (19) arranged in parallel with the forward clutch shaft (12) and the output shaft (3). The reverse driven gear (20) and the reverse driven small gear (21) that are idled are respectively provided, and in this case also between the reverse driven gear (20) and the reverse small gear (21). A multi-plate clutch unit (not shown) is provided so that the power between them can be inserted and removed. One reverse driven gear (20) as shown
Is always meshed with the reverse drive gear (16) of the forward unit (11), while the other small reverse gear (21) is constantly meshed with the large output gear (10).

Next, (22) shows a gear case arranged in front of the main body case (1). This Gear Case (22)
Is attached to the front side wall (4) of the main body case (1) such that the upper half portion thereof protrudes above the main body case (1), and a hollow gear chamber (23) is provided inside thereof. Has been formed. The front end portion of the forward clutch shaft (12) is extendedly arranged in the upper and lower intermediate portions of the gear chamber (23). An input gear (24) having a cylindrical gear shape is attached to the extension portion (12a) of the forward clutch shaft (12) integrally with the forward clutch shaft (12).

The gear case (22) has a gear chamber (23) in the lower half thereof, which is located below the input gear (24).
The transmission shaft (25) of the book is arranged laterally.
The transmission shaft (25) is integrally provided at its intermediate portion with a conical gear (26) which is constantly meshed with the input gear (24). Similarly, the rear end side of the transmission shaft (25) is supported by the rear side wall (27) of the gear case (22) via a bearing (28). The front end side of the case cover (3) attached to the opening (30) of the front side wall (29) of the gear case (22).
It penetrates through 1) and protrudes forward, and is rotatably supported through a bearing (32) interposed between the case lid (31) and the case lid (31). A shaft coupling (33) for power transmission is attached to the projecting end (25a) of the transmission shaft (25). The case lid (31) can be removed from the gear case (22) by removing the bolt (34) fixing the flange portion to the gear case (22). Further, another transmission shaft (35) is also arranged laterally in the upper half portion of the gear chamber (23). The transmission shaft (35) is provided with a conical gear (36) which is always meshed with the input gear (24) integrally with the intermediate portion, and has bearings (37) (38) on both sides of the conical gear (36). It is rotatably supported by the gear case (22). Further, both end portions thereof penetrate the gear case (22) and project in the front-rear direction. Similarly, shaft joints (35) (36) for power transmission are fitted and fixed to both projecting ends (35a) (35b) of the upper transmission shaft (35), respectively. .

These two transmission shafts (25) and (35) are parallel to each other, and are supported in a slanted manner in a state of being lowered frontward relative to the axial direction of the forward clutch shaft (12). (41) is the protruding end (25
The mounting flange mounting seat formed on the outer wall surface of the front side wall (29) of the gear case (22) so as to surround a) is shown.

In the first embodiment, as shown in FIG. 3, the reduction reversing machine (2) is separately installed behind the engine (43) mounted on the hull (42), and the lower side of the reduction reversing machine (2) is installed. Transmission shaft (25)
The power from the front engine (43) is input via the power transmission shaft (44) with the input shaft as the input shaft. That is, in this case, the above engine (43)
Is installed with the flywheel housing (45) facing the stern side, and at the power take-off shaft coupling (46) arranged outside the flywheel housing (45),
The shaft coupling (47a) on one end side of the power transmission shaft (44) is connected. Then, the speed reducer / reverse gear (2) is attached to the lower transmission shaft (25) so that the shaft joint (33) is in a horizontal state at a position substantially the same height as the power take-off shaft joint (46). The shaft joint (33) is installed and connected to the shaft joint (47b) on the other end side of the power transmission shaft (44).
In that case, the transmission shaft (25) is inclined with respect to the forward clutch shaft (12) and the output shaft (3) is parallel to the forward clutch shaft (12) as described above. The rear side of the main body case (1) is slightly lowered, and the output shaft (3) is inclined obliquely downward with respect to the horizontal crankshaft center (48). In the output shaft joint (9) provided on the output shaft (3), the propeller shaft (49) is arranged in an inclined shape penetrating the hull (42) as shown in FIG. It is designed to be connected via a shaft coupling (50). (51) is
The propeller provided at the other end of the propeller shaft (49) is shown. Also, the upper transmission shaft (35) is the PTO shaft,
The front side of the transmission shaft (35), that is, the body case (1)
An auxiliary machine (52) such as a generator may be connected to the shaft coupling (39) projecting in the opposite direction.

The power transmission path in this case is as follows. First, the power generated in the engine (43) is input to the lower transmission shaft (25) via the power transmission shaft (44).
Then, through the conical gear (26) provided on the transmission shaft (25) and the input gear (24) meshing with the conical gear (26), the forward clutch shaft (1) is refracted from the horizontal direction to the obliquely rearward and downward direction.
2) transmitted to. That is, in this case, the conical gear (26) and the input gear (24) form a gear transmission mechanism.

When moving forward, in the main body case (1), the forward clutch shaft (12) → backward drive gear (16) → (multi-plate clutch part (17) → forward small gear (15) → output large gear (10) → output It will be transmitted through the path of the axis (3). On the other hand, when the vehicle is in reverse, the forward clutch shaft (12) → reverse drive gear (16) → reverse driven gear (20) → reverse small gear (21) → large output gear (10) → output shaft (3) It is transmitted, and the output shaft (3) at that time rotates in the opposite direction to that during forward movement.

The power taken out from the output shaft connecting means (9) provided on the output shaft (3) is transmitted through the propeller shaft (49) to the propeller (51).
To be converted into propulsion power.

As described above, by using the lower transmission shaft (25) as the input shaft, it is possible to easily make the ship with a shallow ship bottom an angle drive specification.

Next, FIG. 4 shows a second embodiment of the same angle drive specification. In the second embodiment, the reduction / reverse gear (2) is separately installed behind the engine (43), and the transmission shaft (35) on the upper side of the reduction / reverse gear (2) is used as an input shaft. Fitting (39) on the front side of (35)
And a power transmission shaft (44) arranged between the engine (43) and
One shaft joint (47b) is connected.

The power transmission path in the second embodiment is as follows.
That is, the power generated in the engine (43) is input to the upper transmission shaft (35) this time via the power transmission shaft (44). Then, the conical gear (3
6) and via the input gear (24) of the forward clutch shaft (12), the light is refracted in the diagonally rearward and downward direction from the horizontal direction and transmitted to the forward clutch shaft (12). That is, in the second embodiment, the conical gear (36) and the input gear (24) form a gear transmission mechanism.

The transmission path of the power input to the forward clutch shaft (12) is
Since it is the same as the first embodiment, the description thereof will be omitted.

In addition, also in the second embodiment, the upper transmission shaft (35)
The rear shaft coupling (40), the lower transmission shaft (25), and the front shaft coupling (33) may be used as PTO shaft couplings to drive the accessories in a linked manner.

FIG. 5 shows the third embodiment with the same angle drive specification.
Is shown. In the third embodiment, the mounting flange (53) is provided between the mounting flange mounting seat (41) provided on the front side wall (29) of the gear case (22) and the flywheel housing (45) of the engine (43). And its mounting flange (53)
Inside the, on the flywheel (54) of the engine (43),
The shaft coupling (55) provided on the transmission shaft (25) on the lower side of the gear case (22) is directly connected.

That is, in the third embodiment, the power generated in the engine (43) is applied to the lower transmission shaft (25) from the flywheel (54) of the engine (43) to the shaft coupling (55).
It is designed to be directly transmitted via. The power transmission path after being input to the transmission shaft (25) is the same as that of the first embodiment, and therefore will be omitted.

As described above, according to the present invention, with respect to the output shaft and the clutch shaft which are arranged in parallel with each other in the vertical direction, the two shafts which are interlockingly connected to the clutch shaft are provided above and below the front end portion of the clutch shaft. Since the transmission shaft is attached and one of the front end parts of this transmission shaft can be selected and connected to the engine side, when the engine output shaft is installed at a relatively high position, the transmission shaft front end part on the upper side can be selected. On the other hand, if the output shaft can be connected to the front end of the lower transmission shaft, the output shaft can be connected to the front end of the lower transmission shaft. In the case of an engine, the upper transmission shaft is used, otherwise, the lower transmission shaft is used. The effect that you can choose between high and low is there. Further, according to the present invention, the clutch shaft and the output shaft are arranged in parallel with each other in the vertical direction in the main body case as in the case of the conventional normal reduction / reversing machine, and the upper and lower transmission shafts and the transmission thereof having different structures from the conventional ones are mounted. The connecting part between the shaft and the clutch shaft is mounted on a gear case other than the main body case, and it is mounted on the main body case.Therefore, use the conventional normal speed reducer / reverse machine as it is for the main body case. Even when configuring such an angle drive type, it is sufficient to attach only the new gear case part of the structure and the main body case can be used as it is, so the cost can be drastically reduced There is.

[Brief description of drawings]

1 to 3 are drawings showing a first embodiment of the present invention, in which FIG. 1 is a partial sectional view showing an arrangement state of an engine and a reduction / reverse gear, and FIG. FIG. 3 is a schematic diagram showing a meshed state, FIG. 3 is a schematic layout diagram on the rear side of the hull, and FIG. 4 is a partial cross-sectional view showing a layout state of an engine and a speed reducer / reverse gear in Example 2 of the invention. The figure is also a partial cross-sectional view showing an arrangement state of an engine and a reduction / reverse gear in the third embodiment. (1) …… Main body case, (3) …… Output shaft, (12) …… Forward clutch shaft, (12a) …… Extended part of forward clutch shaft, (19) …… Reverse clutch shaft, (22)… … Gear case, (24) …… Input gear, (25) (35) …… Transmission shaft, (26) (36) …… Conical gear, (43) …… Engine, (4
9) …… Propeller shaft.

Claims (1)

[Claims] 1. A clutch shaft and an output shaft are arranged vertically in parallel inside a main body case, a gear case is attached to the front side of the main body case, and one clutch shaft is extended in the gear case. An input gear is provided in the extension of the clutch shaft, and the above-mentioned gear case is provided above and below the extension of the clutch shaft in the gear case via a gear transmission mechanism with the input gear. Two transmission shafts, which are linked to the clutch shaft and are vertically inclined with respect to the axial direction of the clutch shaft, are attached to the rear end of the output shaft. A marine reduction / reversing machine characterized in that one of the transmission shaft front ends on the side opposite to the propeller shaft can be selected to be connected to the engine side.