JPH0669506U - Breather mechanism of deceleration reversing machine - Google Patents

Abstract

(57) [Summary] [Purpose] Conventionally, the rotation of the forward first speed clutch gear causes splashes of lubricating oil to splatter and directly hit the breather mechanism. It was necessary to configure the breather mechanism 13. In the case of such a tall breather mechanism 13, there is also a problem that it is damaged by the vibration of the speed reducer / reverse gear. The present invention is configured with a small breather mechanism 2, and has the same configuration in the case of a forward first speed / reverse first speed reduction / reverse machine and a forward second speed / reverse first speed reduction / reverse machine. As a result, the breather mechanism that can reduce the cost is provided. A lid provided with a breather mechanism is provided in a reduction / reverse gear attached to a transmission case M, an expansion chamber is provided within the thickness of the lid, and an oil passage is provided in the axial direction of the forward / rearward traveling shaft. Breather mechanism of the characteristic deceleration reversing machine.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a breather mechanism of a reduction / reverse gear attached to a rear part of an engine mounted on a ship to perform a plurality of forward gear shifts and a reverse gear shift.

[0002]

[Prior art]

 BACKGROUND ART Conventionally, a technique related to a breather mechanism that allows inflow and outflow of expanded air and contracted air in a lubricating oil sump is known. For example, Japanese Utility Model Publication No. 2-149810, Japanese Utility Model Publication No. 2-149809, Japanese Utility Model Publication No. 59-142413, Japanese Utility Model Publication No. 63-100611, and Japanese Utility Model Publication No. 52-163654. Or the techniques described in Japanese Utility Model Laid-Open No. 61-132415, Japanese Utility Model Laid-Open No. 50-24944, and Japanese Utility Model Laid-Open No. 49-148328.

Further, the breather mechanism in the conventional deceleration / reverse gear is constructed as in the prior art shown in FIG. That is, it was arranged above the mission case M and above the first forward hydraulic clutch gear. Conventionally, the case plate 1 has been attached to the rear surface position of the mission case M, but it has not been formed on the case plate 1.

[0004]

[Problems to be solved by the device]

 However, in the prior art of FIG. 12, FIG. 13 or FIG. 14 described above, the rotation of the first forward clutch gear causes the splash of lubricating oil to splash, which directly hits the breather mechanism. It was necessary to construct a tall breather mechanism 13 as shown in FIG. 12, FIG. 13 or FIG. In the case of such a tall breather mechanism 13, there is also a problem that it is damaged by the vibration of the speed reducer / reverse gear. 12 is a front view and FIG. 13 is a right side view of FIG. Further, FIG. 14 is a front view of another conventional example, and a side view thereof is omitted. The breather mechanism 13 in FIG. 14 is on the upper surface within the width of the mission case, as in FIG. The present invention solves the above problems of the prior art, and has the same configuration for both the forward first speed / reverse first speed reduction / reversing machine and the forward second speed / reverse first speed reduction / reversing machine. This provides a breather mechanism that can reduce the cost.

[0005]

[Means for Solving the Problems]

 The problem to be solved by the present invention is as described above. Next, the means for solving the problem will be described. That is, in a reduction / reversal machine in which a lid equipped with a breather mechanism is attached to a mission case M, an expansion chamber is provided within the thickness of the lid, and an oil passage is provided in the axial direction of the forward / rearward traveling shaft. is there.

[0006]

[Action]

 Next, the operation will be described. That is, since the breather opening 1a and the breather communication hole 1c are provided in the extra space portion of the case plate 1 attached to the rear surface of the mission case M, the splashed oil does not spout out of the mission case M. It was Further, since the breather mechanism 2 can be made to have a small plug-like structure, the problem that the breaker mechanism 2 is damaged by vibration of the reduction / reversing machine is reduced. Further, since the three hydraulic clutches of the forward first speed hydraulic clutch 14, the forward second speed hydraulic clutch 15, and the reverse hydraulic clutch 16 are arranged inside the mission case M, it is difficult to provide the breather mechanism. In the above, by providing the case plate 1 with the breather mechanism 2, it was possible to reliably prevent the splashed oil with a simple configuration. Further, unlike the conventional case, it is no longer necessary to provide a baffle or the like inside the mission case M to prevent the splashed oil from reaching the breather mechanism.

[0007]

【Example】

 Next, examples will be described. FIG. 1 is a front (normal) view of a speed reducer / reverse gear equipped with a breather mechanism 2 of the present invention, FIG. 2 is a right side view of the same, FIG. 3 is a left side sectional view, and FIG. 4 is a left side surface of a forward first speed clutch portion. Sectional view, FIG. 5 is a left side sectional view of the forward 2nd speed clutch portion, FIG. 6 is a front (normal) front view showing the arrangement of each shaft of the reduction / reverse gear of the present invention, and FIG. 7 is a front of the mission case M. Enlarged front (normal) front view of the case plate 1 and breather mechanism 2 attached to the (normal) surface, FIG. 8 is a front view of the case plate 1 taken out, and FIG. 9 is a side sectional view of the case plate 1. (K-K line sectional view), FIG. 10 is a component single-part view of the breather mechanism 2, FIG. 11 is a front (normal) front view of the transmission case M where the case plate 1 is attached, and FIG. FIG.

This will be described with reference to FIGS. 1, 2, 3, 4, and 5. A clutch housing 20 is fixed to the rear surface of the transmission case M, and the clutch housing 20 is fixed to the engine-side housing. A bracket 21 fixed to the engine crankshaft and integrated with the flywheel is disposed inside the clutch housing 20. The bracket 21 is integrated with the reverse shaft 5. A reverse gear 8, a reverse hydraulic clutch 16 and an intermediate (idle) gear 9 are supported on the reverse shaft 5. By connecting the reverse hydraulic clutch 16, the rotation of the reverse shaft 5 is transmitted to the large-diameter gear 7 on the output shaft 6. The output shaft 6 is connected to a propeller for propelling a ship.

The forward first speed shaft 3 is bearing-supported on the right side of the reverse shaft 5 and the forward second speed shaft 4 is supported on the left side of the reverse shaft 5 when viewed from the front (normal) surface of the mission case M. . As shown in FIG. 4, a forward first speed gear 27, a forward first speed hydraulic clutch 14 and a forward first speed transmission gear 11 are supported on the forward first speed shaft 3. A second forward speed gear 28, a second forward speed hydraulic clutch 15 and a second forward speed transmission gear 12 are supported on the second forward speed shaft 4. The forward first speed transmission gear 11 and the forward second speed transmission gear 12 are always meshed with the intermediate (idle) gear 9 in FIG. 3 to rotate. The reverse gear 8 on the reverse shaft 5, the forward 1st gear 27 on the forward 1st speed shaft 3, and the forward 2nd gear 28 on the forward 2nd speed shaft 4 are all large gears on the output shaft 6. It always meshes with the radial gear 7.

In this structure, the reverse shaft 5 and the second forward speed shaft 4 form the oil passage for the pressure oil by disposing the case plate 1 in the portion projecting from the transmission case M. An oil passage cover 24 is fitted on the rear end of the reverse shaft 5. A hydraulic pump is engaged with the rear end of the second forward speed shaft 4. 26 is a pump case lid. Further, a valve case 30 is fitted in a portion where the rear end of the first forward speed shaft 3 projects from the transmission case M, and a speed changeover valve V is fitted inside the valve case 30.

With this configuration, when the speed changeover valve V is rotated and switched, one of the reverse hydraulic clutch 16, the forward first speed hydraulic clutch 14 and the forward second speed hydraulic clutch 15 is selectively meshed with the output shaft. 6 is rotated at a predetermined rotation speed.

In the present invention, a breather mechanism 2 is attached to a case plate 1 attached to the front surface of the above-mentioned mission case M. The case plate 1 supports two shafts, a reverse shaft 5 and a forward 2nd speed shaft 4. In the present invention, the breather is provided above the bearing hole 1b for supporting the reverse shaft 5. An opening 1a is provided, and a breather communication hole 1c is formed upward from the breather opening 1a, and the breather communication hole 1c is formed in a plug-like shape at a portion opened to a thickness portion of the upper surface of the case plate 1. The mechanism 2 is screwed.

The breather mechanism 2 configured in the shape of a plug has a vertical hole 2b formed therein and a breather hole 2a formed in the upper portion. Further, in FIG. 11, a portion of the mission case M to which the case plate 1 is attached is disclosed. The transmission case M 1 includes a bearing hole Mb that constitutes a bearing portion of the reverse shaft 5, a lubricating oil pressure regulating valve hole Mc into which a lubricating oil pressure regulating valve 19 is fitted, and a breather on the right side thereof. The communication opening Ma is opened. The breather communication opening Ma has a diameter smaller than that of the breather opening 1a of the case plate 1 shown in FIG. 8, and is also configured to prevent splashing of the lubricating oil in this portion as well.

[0014]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects. That is, since the breather opening 1a and the breather communication hole 1c are provided in the extra space portion of the case plate 1 attached to the front of the mission case M, the splashed oil is prevented from spouting outside the mission case M. Of. Moreover, since the breather mechanism 2 can be made into a small plug-like structure, the problem of damage due to vibration of the reduction / reversing machine is reduced.

Further, since the three hydraulic clutches of the forward first speed hydraulic clutch 14, the forward second speed hydraulic clutch 15 and the reverse hydraulic clutch 16 are arranged inside the mission case M, it becomes difficult to provide the breather mechanism. In the configuration, by providing the case plate 1 with the breather mechanism 2, it was possible to reliably prevent the splashed oil with a simple configuration. Further, unlike the conventional case, it is no longer necessary to provide a baffle or the like inside the mission case M to prevent the splashed oil from reaching the breather mechanism.

[Brief description of drawings]

FIG. 1 is a front view of a speed reducer / reverser equipped with a breather mechanism 2 of the present invention.

FIG. 2 is a similar right side view.

3 is a sectional view taken along line JJ of FIG.

FIG. 4 is a left side sectional view of a first forward speed clutch portion.

FIG. 5 is a left side sectional view of a forward second speed clutch portion.

FIG. 6 is a front view showing the arrangement of each axis of the speed reducer / reverse gear of the present invention.

FIG. 7 is an enlarged (normal) front view of a case plate 1 and a breather mechanism 2 attached to the rear surface of a mission case M;

FIG. 8 is a front view showing a state in which only the case plate 1 is taken out.

9 is a sectional view taken along line KK of FIG.

FIG. 10 is a partial single item with only the breather mechanism 2 taken out.

FIG. 11 is a front view of the mission case M of a portion to which the case plate 1 is attached.

FIG. 12 is a front view of a conventional decelerating and reversing machine.

13 is a side view of the conventional speed reducer / reverse gear shown in FIG.

FIG. 14 is a front view of another conventional speed reducer / reverse gear.

[Explanation of symbols]

 M mission case V gear change valve P hydraulic pump 1 lid (case plate) 2 breather mechanism 3 forward 1st speed shaft 4 forward 2nd speed shaft 5 reverse shaft 6 output shaft 7 large diameter gear 14 1st forward speed hydraulic clutch 15 2nd forward speed hydraulic Clutch 16 Reverse hydraulic clutch 17 Expansion chamber 18 Oil passage 19 Hydraulic oil relay point Upper limit of oil amount of H mission in Fig. 1 Lower limit of oil amount of L mission in Fig. 1 Ma Breather communication opening Mb Bearing hole of reverse shaft Mc lubrication Oil pressure regulating valve

Claims (1)

[Scope of utility model registration request] 1. A reduction gear reversing machine having a lid provided with a breather mechanism attached to a transmission case M, wherein an expansion chamber is provided within the thickness of the lid, and an oil passage is provided in the axial direction of the forward-rearward movement shaft. The breather mechanism of the deceleration reversing machine characterized by the fact.