JP2551351Y2 - Marine speed reducer with emergency bolt - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency bolt for forcibly connecting a clutch in an emergency in a marine speed reducer.

2. Description of the Related Art In a marine reversing reversing machine, a hydraulic multi-plate clutch is engaged and disengaged to switch back and forth, but when the clutch cannot be connected due to failure of the hydraulic oil system, etc. In addition, an emergency bolt for mechanically pressing the multi-plate clutch plate is provided. That is, in an emergency, the emergency bolt is screwed in the axial direction to press the multi-plate clutch plate to mechanically connect it. Therefore, the emergency bolt is arranged to be screwed in the axial direction so as to press at least the multi-plate clutch plate in the axial direction. In this case, as the mounting position of the emergency bolt, a screw that is screwed into the clutch housing containing the multi-plate clutch plate and the hydraulic piston, and a holding plate that supports the pressing force of the hydraulic piston on the opposite side to the clutch housing. Some are screwed into the device. For example, Japanese Utility Model Laid-Open Publication No. 54-163256 discloses both a screw screwed from the clutch housing side and a screw screwed into the holding plate.

Problems to be Solved by the Invention In the conventional emergency bolt mounting structure described above, when the emergency bolt is screwed into the clutch housing substantially in the axial direction, the clutch housing is provided at the front end side of the clutch shaft. If it is mounted close to the bearing part of the case, it is not possible because there is no space for screwing the emergency bolt. what if,
Even if it is arranged with an interval for that purpose, the engine is connected to the front side of the speed reduction reversing machine, and it is impossible to operate by hand from the front side of the speed reduction reversing machine, An opening is provided on the side or upper side of the speed reduction / reversing machine case, and operation is performed from this opening. Usually, the opening must be covered with a blind lid. As a result, the structure of the speed reduction / reversing machine case becomes complicated and costly,
Further, there is a problem that the strength of the case is insufficient due to the opening.

On the other hand, even in the case where the emergency bolt is screwed into the opposite holding plate, the pinion is usually arranged opposite to the holding plate, and the outer diameter of the pinion is outside the extending direction of the emergency bolt. In such a case, since the emergency bolt cannot be operated from the rear, an opening covered with a blind lid must be formed in the upper part or the side of the case, and there is a similar disadvantage.

The purpose of the present invention is to eliminate the drawbacks of the conventional emergency bolt mounting structure.

Means for Solving the Problems In order to solve the above problems, in the present invention, a reduction reversing machine arranged between the engine and the propeller shaft with the engine as a front side and a propeller shaft as a rear side, A clutch housing driven by the engine and a pinion gear on the rear side of the clutch housing are mounted on a clutch shaft in the case of the speed reduction / reversing machine, and a piston in the clutch housing and a rear side of the piston are opposed to the pinion gear. A clutch plate is provided between the boss of the pinion gear and the clutch housing between the plate holding plate and the clutch housing, and the clutch plate is pressed between the piston and the holding plate by the operation of the piston, whereby the clutch housing From the side via a pinion gear parallel to the clutch shaft and the propeller shaft In a marine reduction reversing machine that transmits power to an output shaft interlockingly connected to a gear, an emergency bolt screwed into the pinion gear from behind the pinion gear and pressing the clutch plate supports the rear end of the clutch shaft. The emergency bolt and the tool insertion hole are provided at the same length from the axis of the clutch shaft with respect to the tool insertion hole in the case wall of the reduction / reversing machine facing the pinion gear. In the embodiment described below, the forward input gear of the clutch housing meshes with the input gear of the input shaft. However, there are various types of power transmission paths between the clutch shaft and the engine. It can be an axis.

According to the configuration of the present invention, the emergency bolt is screwed into the pinion facing the holding plate. Therefore, the emergency bolt is rotated by a tool from the axial side surface of the pinion, and the holding plate is rotated. By pressing the multi-plate clutch plate via the, the clutch can be connected in an emergency.

The rotation of the pinion for the emergency bolt operation can be performed by the rotation of the output side shaft.

First Embodiment In FIG. 1, (1) is a speed reduction / reversing machine case, and a front end open portion of the speed reduction / reversing machine case (1) is covered with a joint flange (2) for mounting to the engine side. A cylindrical tubular boss (3) is formed at the center of the upper half part in the reduction / reversing machine case (1), and the rear end of the input shaft (4) is supported by the cylindrical boss (3) by a bearing ( 5), the front end of which is passed through said joint flange (2) and is carried by said joint flange (2) by a bearing (6).
Is pivoted through. These bearings (5) (6)
In between, an input gear (7) is integrally formed on the outer periphery of the input shaft (4). Furthermore, behind the input shaft (4), an output shaft (8) arranged concentrically with the input shaft (4).
However, the front end thereof is bearing (9) to the cylindrical boss (3).
As a result, the rear end penetrates the rear wall of the bearing case (1) and is supported by the rear wall via the bearing (10). A damper joint (12) for connection to the crankshaft side is fixed to a front end of the input shaft (4) via a boss (11) attached to the front end via a spline.

A forward clutch shaft (13) is disposed below the input shaft (4) and the output shaft (8).
Is supported by a front wall of a speed reduction / reversing machine case (1) via a bearing (14), and a rear end portion is supported by a bearing (15) to a rear wall portion of the speed reducing / reversing machine case (1). It is pivoted. The clutch shaft (13) has a forward input gear (1) on its outer periphery at the rear of a bearing (14) supporting the front end thereof.
A tubular clutch housing (17) having a bottom formed with 6) is fitted, and is opposed to the clutch housing (17), and at the rear side, an output gear (19) on an output shaft (8). A forward pinion (18) meshing with the clutch shaft (13) is externally fitted to the clutch shaft (13) so as to be rotatable in the reverse direction. A boss (20) is integrally formed to protrude from the front side surface of the forward pinion (18) into the clutch housing (17). The multiple disc clutch plates (21) pressed against each other are alternately arranged on the outer periphery of the boss (20) and the inner peripheral surface of the clutch housing (17). A hydraulic piston (22) is inserted into the clutch housing (17) at the front side of the multi-plate clutch plate (21), and supplies hydraulic oil to the rear side, that is, the front side of the hydraulic piston (22). By doing so, the hydraulic piston (22) is slid backward, and the multiple disc clutch plates (21) are pressed against each other. (23)
On the rear side of the multi-plate clutch plate (21), a retaining plate supported by a retaining ring (24) attached to the inner peripheral surface of the clutch housing (17). The multi-plate clutch plate (21) It is pressed while being sandwiched between 23) and the hydraulic piston (22). An emergency bolt (27) is screwed into a screw hole (26) formed to penetrate the advance pinion (18) in the axial direction so as to face the pressing plate (23).

On the outer surface of the rear wall of the speed reduction / reversing machine case (1), for supplying hydraulic oil or lubricating oil to the back surface of the hydraulic piston (22) or each lubricating part, facing the forward clutch shaft (13). The hydraulic oil pump (28) is a bolt (29) inserted in the axial direction from the rear side of the hydraulic oil pump (28).
Has been fixed by. A drive shaft (30) of the hydraulic oil pump (28) is arranged concentrically with the forward clutch shaft (13), and is connected to the rear end face of the forward clutch shaft (13) so as to rotate integrally therewith. That is, the hydraulic oil pump (28)
It is mounted concentrically with the forward clutch shaft (13) so as to be driven by the forward clutch shaft (13), but the clutch shaft (13) is located generally lower than the output shaft (8). This shortens the passage for suction from the oil pan (31) provided at the bottom of the speed reduction / reversing machine case (1), thereby improving the pump efficiency and reducing the size of the hydraulic oil pump (28). become.

In the above description, the bolt (29) for mounting the hydraulic oil pump (28) is disposed at a distance of the same length l as the turning radius of the emergency bolt (27) with respect to the shaft center (32) of the clutch shaft. . In addition, a hole (33) formed in the rear wall of the speed reducer / reversing machine case (1) for screwing a part of the mounting bolt (29) is formed through the rear wall. When the mounting bolt (29) is removed, the screw hole (33) becomes a communication hole that penetrates the inside and outside of the reduction / reversing machine case (1), and a tool such as a screwdriver is inserted into the screw hole (33) from behind. Then, the emergency bolt (27) can be rotated and pushed forward, and the multiple disc clutch plate (20) can be pressed into contact with the pressing plate (23).

In order to align the emergency bolt position of the pinion (18) with the screw hole (33) for operating the emergency bolt (27), the pinion (18) into which the emergency bolt (27) is screwed is turned. Although the pinion (18) is connected to the propeller shaft side instead of the engine side in the present invention, such positioning can be easily performed. That is, in the case of the clutch housing (17), the clutch housing (17) is directly connected to the crankshaft of the engine via the input shaft (4). It has to be rotated and requires a large force, which is not easy, but there is no such disadvantage.

In FIG. 1, a positioning pin (35) is inserted into the upper wall of the reduction / reversing machine case (1) from above, and the rear end of the input shaft (4) is supported by the positioning pin (35). The bearing (5) and the bearing (9) supporting the front end of the output shaft (8) are positioned. That is, a small-diameter portion (36) is formed at the tip of the positioning pin (35), and the small-diameter portion (36) is forcibly interposed between the two bearings (5) and (9), whereby these bearings (5) are formed. And (9) is held at a predetermined position. As shown in FIG. 3, the positioning pin (35) has an annular groove (38) communicating with the lubricating oil passage (37) of the cylindrical boss (3) to which the bearings (5) and (9) are attached. ) Is formed, and a drill hole (39) communicating with the tip of the positioning pin (35) is formed from the annular groove (38), thereby supplying lubricating oil to both bearings (5) and (9). I can do it. Further, on the upper side of the annular groove (38), the outer peripheral surface of the positioning pin (35) communicates with the inside of the speed reduction / reversing machine case (1), and also communicates with the outside at the upper end of the positioning pin (35). A mist removal hole (40) is formed,
Thereby, a function as a breather in the deceleration / reversing machine case (1) is provided.

As described above, according to the present invention, the clutch housing is located on the front wall side and the pinion is located on the rear side,
The emergency bolt is screwed into the pinion facing the holding plate of the clutch plate, so that the clutch housing is close to the front wall side of the speed reduction / reversing machine case and the holding plate is provided on the opposite side. The emergency bolt can be operated by easily inserting a tool from the tool insertion hole of the reduction / reversing machine case behind the pinion, and therefore, an operation opening covered with a blind lid on the side or top surface of the reversing machine case There is no need to provide a clearance in the axial direction for forming and inserting the tool from the side. As a result, it is possible to eliminate the inconvenience of reducing the strength of the deceleration / reversing machine case or increasing the cost as in the related art, and to make the whole compact.

Further, since the positioning of the emergency bolt position of the pinion for the emergency bolt operation and the tool insertion hole may be performed by rotating the propeller shaft side, compared with the case of rotating the clutch housing connected to the engine. There is an advantage that it can be performed with a light operation.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall vertical sectional view of a speed reduction reversing machine showing an embodiment of the present invention, FIG. 2 is a side view of a speed reduction reversing machine case viewed from behind, and FIG. FIG. 4 is an enlarged vertical sectional view of a positioning pin portion. (13)… clutch shaft, (18)… forward pinion, (2
1) Multi-plate clutch plate (23) Holding plate (27)
...... Emergency bolt.

Claims (1)

(57) [Scope of request for utility model registration] 1. A deceleration reversing machine disposed between an engine and a propeller shaft with the engine as a front side and a propeller shaft as a rear side, wherein the engine is mounted on a clutch shaft in a case of the deceleration and reversing machine. A boss of the pinion gear and a clutch are provided between a piston in the clutch housing and a holding plate provided on the rear side of the piston and opposed to the pinion gear. A clutch plate is provided between the clutch housing and a housing. A clutch plate is pressed between the piston and the pressing plate by the operation of the piston, and the propeller shaft is parallel to the clutch shaft via a pinion gear from the clutch housing side. For transmitting power to the output shaft linked to the motor In the fast reversing machine, an emergency bolt screwed into the pinion gear from behind the pinion gear and pressing the clutch plate is inserted into a tool insertion hole in a case wall of the reduction reversing machine case wall which supports the rear end of the clutch shaft and faces the pinion gear. On the other hand, a speed reducer / reversing machine equipped with an emergency bolt, wherein the position of the emergency bolt and the tool insertion hole is set to be the same length from the axis of the clutch shaft.