JPS5846290Y2 - Planetary gear speed increaser - Google Patents

Description

[Detailed description of the invention] The present invention relates to a planetary gear type speed increasing device built into a flywheel interposed between the power shaft of an engine and an output shaft directly connected to a driven machine. This invention relates to a planetary gear type speed increasing device in which a cooling means is provided on a lid member attached to the.

Conventionally, when a driven machine such as a generator or a pump is directly connected to the rotational power shaft of a variety of power engines, and when the rotational speed of the engine is to be increased and transmitted to the driven machine, a speed increaser is used to increase the rotational speed of the engine. It is necessary to interpose it in the transmission device.

However, when a speed increasing device is interposed between the power shaft of the engine and the output shaft directly connected to the driven machine, the power transmission device including the speed increasing device increases in size.

There are disadvantages in that the meshing noise of the gears becomes louder, frictional heat, etc. is generated from the meshing portions of the gears and the contact portions of the shaft portions, and furthermore, the weight and manufacturing cost increase.

Therefore, in order to eliminate the above-mentioned drawbacks of the conventional technology, the present invention provides a method for transmitting power including the speed increasing device by installing a planetary gear type speed increasing device inside the flywheel fixed to the power shaft between the trees. In addition to making the entire device compact and lightweight, it also prevents noise such as meshing noise generated from inside the flywheel housing, and also reduces frictional heat generated from the meshing parts of gears and the contact parts with the shafts that support gears. The purpose is to effectively prevent such problems.

In order to achieve the above object, this invention is a power transmission device that has an output shaft that is directly connected to a driven machine on the flywheel side that is fixed to the power shaft of the engine, and an internal gear is fixed around the output shaft. At the same time, a sun gear fixed to a flywheel housing provided with an air circulation hole, and a planetary gear meshing with the internal gear at the same time are pivotally attached to a member of the flywheel. A lid member for enclosing the sun gear, internal gear, planetary gear, and lubricating oil is fixed, cooling means such as radiation fins are provided on the outer wall of the lid member, and air circulation holes are provided in the flywheel housing. This is a summary.

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

In the embodiment of the present invention shown in the drawings, a flywheel 2 is fixed with bolts to a crankshaft 1 that is the power shaft of the engine, and is rotatably supported within the flywheel 2 by a bearing 14. Further, an output shaft 8 is provided which is directly connected to a driven machine (not shown) through an output shaft joint 8a, and a ring-shaped internal gear 3 is fitted into an output shaft member 13 fixedly installed around the output shaft 8. ing.

Next, a sun gear 5 is fixed to a flywheel nose 4 that covers the flywheel 2, and a plurality of planetary gears rotate on the same circumference while meshing with the internal gear 3 and the sun gear 5 at the same time. 6 are arranged at equal intervals, and these planetary gears 6
The gear shaft 7 is fixed to the cover member 9vc.

The lid member 9 also includes an internal gear 3, a planetary gear 6, and a sun gear 5.
is installed inside the flywheel 2 and fixed to the flywheel 2 with bolts so as to be enclosed.

Furthermore, a sealing material 1 is applied to the sliding portion of the lid member 9 with the sun gear 5.
0 is fitted into the flywheel 2, and lubricating oil O is also sealed inside the flywheel 2.

Further, a plurality of heat radiation fins 11 are formed radially on the outside of the lid member 9, and a plurality of air circulation holes 12 are formed in the flywheel housing 4 facing the heat radiation fins 11.
has been established.

In the planetary gear speed increaser of the present invention configured as described above, the crankshaft rotates 10 times, and the gear shaft 7 of the planetary gear 6 which is fixed to the cover member of the flywheel 2 is fixed by the flywheel housing 4. The sun gear 5 rotates the planetary gear 6 while rotating on the same circumference, so the internal gear 3 meshed with the planetary gear 6 is sped up more than 10 revolutions of the crankshaft and rotates on the output shaft 8. Transmit that rotation.

That is, in the power transmission device shown in the drawings, a speed increasing device made of a planetary gear device is configured within the flywheel 2.

Moreover, the speed increasing device built into the flywheel 2 is filled with lubricating oil O, and the heat radiation fins 11 provided on the lid member 9 that are in contact with the lubricating oil O are connected to the air circulation holes 1.
2 plays the role of a cooling fan for the speed increaser.

As mentioned above, this invention has a sun gear in the flywheel,
Since the lid member that seals the internal gear, planetary gear, and lubricating oil is fixed to the flywheel, the lubricating oil will not leak out from inside the flywheel, and noise such as gear meshing noise will be significantly reduced. Furthermore, frictional heat generated from the meshing parts of the gears and the contact parts with the shaft parts that support the gears is transferred to outside air through the heat dissipation fins provided on the outside of the lid member and the air circulation holes provided in the flywheel housing. It has the effect of effectively dissipating heat inside.

In addition, in the planetary gear type speed increasing device of the present invention, the speed increasing device consisting of the planetary gear device is built into the flywheel, so the power transmission device can be configured compactly and the weight can be reduced by 1. There is an effect.

Further, by providing a speed increasing device made of a planetary gear device, the structure is simplified and manufacturing costs can be reduced.

[Brief explanation of drawings]

The drawing is a side sectional view of a planetary gear type speed increasing device installed inside a flywheel in an embodiment of the present invention. 1... Crankshaft, 2... Flywheel, 3... Internal gear, 4... Flywheel nozzle, 5... Sun gear, 6...
... Planetary gear, 8 ... Output shaft, 9 ...
...Lid member, 11...Radiation fin 12...
...Air circulation hole, O...Lubricating oil.

Claims (1)

[Claims for Utility Model Registration] l In a power transmission device having an output shaft directly connected to a driven machine on the flywheel side fixed to the power shaft of an engine, an internal gear is fixed around the output shaft, and A sun gear fixed to the flywheel housing and a planetary gear that meshes with the internal gear at the same time are pivotally attached to a member of the flywheel. A planetary gear type speed increaser characterized in that a lid member is fixedly installed to seal lubricating oil, a cooling means is provided on the outer wall of the lid member, and an air circulation hole is provided in the flywheel housing. 2. The planetary gear speed increaser according to claim 1, which is a registered utility model, is characterized in that the cooling means provided on the outer wall of the lid member is a radiation fin.