JPS6112296Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an axle structure for a mobile agricultural machine.

Conventionally, the axles of mobile agricultural machinery such as tillers and combines were mounted on the lower part of the transmission case, but when the left and right axles were mounted independently on the transmission case in a cantilevered state,
It is weak in strength and causes the axle to run out, causing various problems such as damage to bearings and transmission gears. For this reason, methods have already been devised such as boring the inner ends of the left and right axles, inserting short shafts there, and connecting and supporting the two axles. This requires intervening members, making it large and expensive.

On the other hand, when assembling the transmission case, the transmission mechanism such as a speed change gear mechanism and side clutch mechanism, and one axle with the transmission gear fitted into one side of the transmission case, which is divided into left and right halves, are assembled in advance, and the other axle The transmission gear to be fitted into the transmission gear is simply placed on the transmission gear incorporated in one of the transmission cases, and the transmission case incorporating the other axle is attached from above,
I was doing the assembly. Therefore, if the transmission gear placed on the other axle is slightly misaligned, the transmission gear cannot be fitted onto the other axle, and assembly requires considerable time.

The purpose of the present invention is to solve these conventional problems, and the embodiment will be explained below with reference to the drawings. Reference numerals 1 and 2 are transmission cases; It is constructed so that it can be divided into two parts, and transmission mechanisms such as a transmission gear mechanism B and a side clutch mechanism C are integrally provided within the transmission cases 1 and 2. At the bottom of the transmission cases 1 and 2 are left and right axles 3,
4 are mounted on metals 13 and 14 by bearings 15 and 16, and their inner ends are protruded so as to abut each other in a concentric manner to the extent that they do not abut inside the transmission cases 1 and 2.

Furthermore, to explain in detail the left and right axles 3 and 4, each of the axles 3 and 4 has a spline portion 1.
0, 11 are engraved, and transmission gears 5,
The spline portions provided on the bosses 8 and 9 of 6 are fitted. Further, the left axle 4 extends further from the spline portion 11 and is formed at an inner end portion 12, and the diameter of the inner end portion 12 is somewhat smaller than the spline diameter of the boss 8 of the right transmission gear 5. One end of the boss 8 of the right transmission gear 5 is rotatably fitted thereto.

Note that 7 is a liner fitted into the inner end 12 of the left axle 4, and is held between the end surfaces of the bosses 8 and 9 of the left and right transmission gears 5 and 6. 17 is an input pulley, and 18 and 19 are gears of the side clutch mechanism C, which mesh with the transmission gears 5 and 6.

Therefore, power is independently transmitted to the left and right axles 3 and 4 by the transmission gears 5 and 6 that mesh with the gears 18 and 19 of the side clutch mechanism C, and the right transmission gear is transmitted inside the axles 3 and 4. Since the boss 8 of 5 is fitted across both axles 3, 4, the left and right axles 3, 4 are connected and supported by the boss 8 of the transmission gear 5, and are configured to eliminate vibration of the axles 3, 4. There is.

In assembling the transmission cases 1 and 2, first, the transmission mechanisms such as the transmission mechanism B and the side clutch mechanism C are installed in the left transmission case 2, and the bearing 16 is attached to the left axle 4. In the fitted state, the shaft is mounted on the transmission case 2. At the same time, the left transmission gear 6 is engaged by the side clutch mechanism C.
The inner end portion 12 of the axle 4 is fitted into the spline portion 11 of the axle 4 while meshing with the gear 19 of the axle 4.
Insert the liner and the right transmission gear 5 into gear 18 of the side clutch mechanism C while meshing with them.
When the assembly to the left transmission case 2 is completed as described above, the right axle 3 is assembled into the right transmission case 1 with the bearing 15 fitted, and the left and right transmission cases 1 and 2 are assembled at the dividing surface A. It will be completed.

In this case, one end of the boss 8 of the right transmission gear 5 fits into the inner end 12 of the left axle 4, and the position is restricted, so the right axle 3 mounted on the right transmission case 1 is inserted. Even when doing so, the transmission gear 5 is accurately and extremely smoothly fitted into the spline portion 10 of the axle 3 without causing any positional deviation.
This allows the transmission cases 1 and 2 to be assembled quickly.

As described above, in the present invention, the axles 3 and 4 are mounted on the lower parts of the transmission cases 1 and 2, which can be divided into left and right halves, by means of bearings 15 and 16.
In this mobile agricultural machine, the axles 3 and 4 are connected to the transmission cases 1 and 2, which are independently driven on the left and right sides via transmission gears 5 and 6, respectively, from a transmission mechanism equipped with a steering clutch integrally provided in the transmission mechanism 2. The inner end portion 12 of one axle 4 of the axles 3 and 4 is provided so as to protrude so as to abut and concentrically approach each other within the axles 2.
Then, one end of the boss 8 of the transmission gear 5 which is fitted onto the other opposing axle 3 to be driven is rotatably fitted, and the axles 3 and 4 are connected to the boss 8 of the transmission gear 5 when the case is assembled. Since the axles 3 and 4 are connected and supported through the transmission case 1 and 2, the axles 3 and 4 can be connected and supported within the transmission cases 1 and 2 with a minimum number of members without intervening any separate members. Therefore, it can be constructed extremely small and compact and at low cost.

Furthermore, when assembling the transmission cases 1 and 2, one end of the boss 8 of the other transmission gear 5 is fitted onto the inner end 12 of one axle 4, and the transmission gear is Since the other axle 3 that meshes with the transmission gear 5 can be inserted, the transmission gear 5 will not be misaligned unexpectedly, and the assembly can be performed accurately, extremely quickly and easily, which is an extremely useful practical effect. It is something.

[Brief explanation of the drawing]

The drawing is a longitudinal sectional front view showing an embodiment of the axle structure of the mobile agricultural machine according to the present invention. In the figure, 1 and 2 are transmission cases, 3 and 4 are axles, 5 and 6 are transmission gears, and 8 and 9 are transmission gears 5 and 6.
12 is the inner end of the axle 4, 15 and 16 are bearings, A is a dividing surface, B is a speed change gear mechanism, and C is a side clutch mechanism.

Claims (1)

[Scope of utility model registration request] Axles 3 and 4 are supported by bearings 15 and 16 at the bottom of transmission cases 1 and 2, which can be divided into left and right halves.
In this mobile agricultural machine, the axle shaft 3 is driven independently on the left and right sides via transmission gears 5 and 6 from a transmission mechanism having a steering clutch integrally provided in the transmission cases 1 and 2, respectively. . One end of the boss 8 of the transmission gear 5 which is driven by the transmission gear 5 is rotatably fitted, and the axles 3 and 4 are connected and supported via the boss 8 of the transmission gear 5 when the case is assembled. Characteristic axle structure of mobile agricultural machinery.