JPS6342054Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of application of industrial technology] The present invention relates to a gear device used in a power bogie for a railway vehicle, and in particular, one end of the gear device is supported by an axle, and the other end is attached to the gear box on the bogie. This invention relates to a Cardan gear system supported by a suspension device.

[Prior art]

First, an example of a Cardan gear device among conventional gear devices for railway vehicles will be described with reference to the drawings. 7th
The figure is a partially sectional side view of the Cardan gear device, and FIG. 8 is a sectional view taken along line A--A in FIG. 7.

Pinion 1 with a shaft is supported on both sides by bearings 2 and covers 3, 3' supporting the bearings in gear box 4 with bolts 5. On the other hand, gear 7 fitted to axle 6 which drives a wheel shown by a dashed line in Fig. 7 is supported on both sides by bearings 8 and covers 9 supporting the bearings in gear box 4, so that the large and small gears are in mesh. Oil throwers 10' and 10 are fitted to the shafts at the portions facing covers 3' and 9 through which the shafts pass, respectively, to prevent the lubricating oil sealed in gear box 4 from leaking out.

In order to house the large gear 7 and the small gear 1 inside, the gear box 4 is divided into two parts along a plane including the shafts of both gears, and the two parts are connected by fastening parts such as bolts and nuts.

In this way, the large gear side of this gear device is connected to the axle 6.
The small gear side is mounted on the bogie frame 12 by a hanging rod 11 with a rubber 13 and a washer 1.
4 with nuts 15, and mounted on the bogie frame 12. Gear box 4 and hanging rod 11
As shown in FIG. 8, a bearing 17 is attached to a pin 16 passed through a hole drilled in a part of the outside of the gear box 4, and the hanging rod 11 is rotatably connected by this bearing 17. There is. By connecting in this way, the vertical displacement of the truck is absorbed by the rubber 13 and the bearing 17.

That is, the conventional gear system for a railway vehicle consists of a gear box consisting of a hanging rod 11 supported by an axle 6 on one side and rotatably connected at one end to a gear box on the other side, a rubber 13, a washer 14, and a nut 15. It is supported on the bogie frame by a hanging device.

[Problem that the invention attempts to solve]

In the above-mentioned gear system, the hanging rod 11 receives all of the reaction force of the torque generated by the meshing force when the vehicle is running and the vibration that the axle receives from the rail, so the hanging rod 11, especially its connecting portion with the gear box, is must be strong.

On the other hand, as railway vehicles become faster, weight reduction of gear devices is being considered, and gear boxes may be made of lightweight structures, but in this case, the problem is that the attachment part of the hanging rod of the gear box hanging device is insufficient in strength. It was becoming.

Furthermore, when the gear box is made of cast metal, the shape of the gear box suspension part is complicated, which not only causes high costs but also causes cavities in the casting.

Further, the large gear 7, the small gear 1, and their bearings 2 and 8 are located in the gear box 4 and are lubricated with lubricating oil in the gear box 4, but the bearing 17 of the connection part of the hanging rod 11 is
is located outside the gear box 4, and it was necessary to consider separate lubrication using grease or the like.

[Purpose of invention]

In view of the above circumstances, the present invention eliminates the attachment part of the hanging rod of the hanging device from the gear box body, and solves the strength problem in reducing the weight of the gear box.
The purpose of this invention is to simplify the manufacture of the gear box body by simplifying its shape, and to improve the lubrication method by housing the bearing of the connecting portion of the suspension rod inside the gear box.

[Summary of the idea]

For the above purpose, the present invention makes it possible to separate the structure that holds the pinion shaft from the gear box, and rotatably attaches one end of the hanging rod of the gear box suspension device to the pinion shaft holding structure. The small gear holding structure is attached to the gear box so that the rotating part is housed in the gear box, and the rotating part can be lubricated by lubricating oil in the gear box.

[Example of idea]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to embodiments and drawings.

Figures 1 and 2 are diagrams of a gear device for a railway vehicle according to the present invention, with Figure 1 being a partially sectional side view and Figure 2 being a sectional view taken along line B-B in Figure 1. The same reference numerals as in FIGS. 7 and 8 indicate the same parts.

The small gear 1 with a shaft has both shaft parts covered with lids 18, 18'.
The lid 18,1 is supported by a bearing 2 held in the
8' are integrally tightened with bolts 20 via a support 19. An oil drainer 1 is provided on the portion of the pinion shaft that passes through the lid 18' and faces the lid 18'.
0' is inserted. In this way, the pinion 1, the bearing 2, the lids 18 and 18', the support 19
The pinion shaft holding structure is constituted by the bolts 20 and 20.

Details of the pinion holding structure are shown in FIGS. 3 and 4. FIG. 3 is a side view of the small gear shaft holding structure with the lid removed, and FIG. 4 is a sectional view taken along line CC in FIG. 3. A support 19 inserted between the lids 18 and 18' has a hole into which a pin 16 is inserted, and the pin 16 is connected to the hanging rod 11 via a bearing 17. A portion of the cylindrical portion of the support 19 on the large gear side is cut out so as not to interfere with the meshing of the gears.

The pinion shaft holding structure configured in this way is
As shown in FIGS. 1 and 2, it is assembled into the gear box 21 using bolts 5. That is, the gear shaft holding structure is housed in the gear box 21 by passing the hanging rod 11 through a hanging rod insertion hole provided in the upper half of the gear box 21 which is divided into two parts. The large gear 7 is stored in a gear box as in the conventional case, and the upper and lower gear boxes are connected by fastening parts.

A packing 22 made of an elastic material is provided between the gear box 21 and the hanging rod 11 which is connected to the pinion shaft holding structure and projects to the outside of the gear box 21 through the hanging rod insertion hole. This prevents lubricating oil from leaking out from inside the gear box 21.

The hanging rod 11 is attached to the bogie frame 12 with a nut 15 via a rubber 13 and a washer 14, as in the conventional device explained in FIGS. 7 and 8, and one of the gears is mounted on the bogie frame 12. be done.

Therefore, in this embodiment, the bearing 17 that connects the small gear shaft holding structure and the hanging rod 11 is housed in the gear box 21, and the lubricating oil in the gear teeth 21 allows the bearing 17 to connect the pinion shaft holding structure and the hanging rod 11 to be lubricated by the lubricating oil in the gear teeth 21. It is then lubricated.

Next, another embodiment of the present invention will be described. 5 and 6 are views of another embodiment of the gear device for a railway vehicle according to the present invention, FIG. 5 is a partially sectional side view, and FIG. 6 is taken along line D-D in FIG. It is a sectional view along the line, and the same reference numerals as in FIGS. 1, 2, 7, and 8 indicate the same parts.

In this example, a pinion shaft holding structure is constructed using a support 23 which is an integral structure of the support 19 and hanging rod 11 used in the previous example, and the pinion shaft holding structure is entirely mounted on a bearing. It is designed to be supported on the gear box via the gear box.

The small gear 1 with a shaft has both shaft parts covered with lids 24, 24'.
The lids 24, 2 are supported by bearings 2 held in the
Between 4', a part of the large gear side of the cylindrical part is cut out,
In addition, they are tightened together with bolts 20 via a support 23 integrated with the suspension rod, thereby forming a small gear shaft holding structure.

The hanging rod portion provided on the support 23 of the small gear shaft holding structure constructed in this manner is attached to the gear box 25.
The suspension rod is passed through the insertion hole provided in the upper half, and the bearings 26 are fitted to the outside of the lids 24 and 24', respectively, and then the small gear 1 is inserted into the gear box 25 so that the small gear 1 is stored in the gear box 25. Support.

The large gear 7 is stored in the gear box 25 in the same way as in the conventional case, and the upper and lower gear boxes are connected by fastening parts. A bearing 2 is mounted on the lid 24' of the pinion shaft holding structure.
6 positioning and oil drain 10" to prevent oil leakage.
After fitting the bearing 26 with the lids 27 and 27',
The outer ring portion of the gear box 25 is fixed to the gear box 25.

A packing 22 made of an elastic material is provided between the hanging rod portion of the support 23 passing through the hanging rod insertion hole and the gear box 25 to prevent lubricating oil from leaking from inside the gear box 25. It is prevented. The hanging rod portion of the support 23 extending outside the gear box 25 is the seventh
Similar to the conventional device described in FIGS. 8 and 8, it is attached to the truck frame 12 with a nut 15 via a rubber 13 and a washer 14, and one of the gear devices is mounted on the truck frame 12.

[Effect of idea]

Since the gear box hanging device according to the present invention can be directly attached to the small gear support, the gear box has a margin in terms of strength design, the gear box can be made with a lightweight structure, and the shape of the gear box is simple. can be converted into

In addition, a bearing for rotatably connecting the gear box hanging device that mounts the gear box on the bogie frame with the gear box is provided.
Since it is housed in the gear box, there is no need to consider special lubrication, making maintenance easier.

[Brief explanation of the drawing]

1 and 2 are diagrams of one embodiment of a gear device for a railway vehicle according to the present invention, in which FIG. 1 is a partially sectional side view, and FIG. 2 is taken along line BB in FIG. 1. 3 is a side view of the small gear shaft holding structure with the lid removed, FIG. 4 is a sectional view taken along line C-C in FIG. 3, and FIG. 5 is another embodiment. FIG. 6 is a sectional view taken along line D--D in FIG. 5. FIG. 7 is a partially sectional side view of an example of a Cardan gear device among conventional gear devices for railway vehicles, and FIG. 8 is a sectional view taken along line A--A in FIG. 7. 1... Pinion, 2, 8, 17... Bearing, 3,
3', 9, 18, 18', 24, 24'...Lid, 4,
21, 25... Gear box, 5, 20... Bolt, 6
...Axle, 7...Big gear, 10, 10', 10''...
...Oil drainer, 11...Hanging rod, 12...Dolly frame, 1
3...Rubber, 14...Washer, 15...Nut, 1
6...Pin, 19, 23...Support, 22...Putskin.

Claims (1)

[Scope of utility model registration request] The structure that holds the small gear shaft is made separable from the gear box, one end of the hanging rod of the gear box hanging device is rotatably attached to the small gear shaft holding structure, and this rotating part is stored in the gear box. A gear device for a railway vehicle, characterized in that the small gear shaft holding structure is attached to a gear box in this manner.