JPS6238481Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a method for attaching a tilling drive case of a side-drive type rotary tilling device to be attached to the rear of an agricultural tractor.

In conventional side-drive type rotary tillers for agricultural tractors, the tiller drive case is disposed on the left side when viewed from the rear of the tractor. The position of the tiller drive case is ergonomically convenient for right-handed people, who prefer to operate the steering wheel with their right hand while rotating the machine to the left. In other words, on the right side of the side drive type rotary tilling case, there is a side frame and a bearing case for the protruding shaft for the tilling claw attachment shaft at the lower end of the side frame. Since the amount of lateral protrusion is small compared to the amount of lateral protrusion, even if you turn this part outside and go around near the ridge, it will not run over the ridge. If you try to rotate clockwise with the tilling drive case side outside, the tilling drive case will protrude downward and sideways, so this part will run over the ridge and the rotary tilling drive will tilt.
This results in shallow tillage when using rotary tillage.

As described above, the side frame side is on the ridge side, that is, on the outside, as it moves around the field, but depending on the operator's handedness, there is a huge difference in whether clockwise or counterclockwise is better.

In order to meet these diverse demands, this invention is designed to
The same parts can be used for both right-handed and left-handed rotary tillers.

The purpose of the present invention is as described above, and the structure of the present invention will be explained based on the structure of the embodiment shown in the attached drawings.

FIG. 1 shows the side drive type rotary tiller of the present invention, with the tiller drive case mounted on the right side when viewed from the rear.

FIG. 2 is a drawing showing the input gearbox 2 mounted on the left side, FIG. 3 is a sectional view of the input gearbox 2 of the present invention, and FIG. 4 is a sectional view of a conventional input gearbox. Power is transmitted from the PTO shaft of the agricultural tractor to the input shaft 1 of the input gearbox 2 of the rotary tillage device. The input gearbox 2 is configured symmetrically, and the power transmission shaft 7 can be supported by protruding toward both the left beam 3 direction and the right beam 4 direction. For this reason, the left and right bearings 16 and 17 are larger and of the same shape. Conventionally, left and right compatibility was not considered, so the bearing closer to the bevel gear 6 that meshes with the bevel gear 5 was made larger or made cantilevered.

In the present invention, as shown in FIG. 3, the input gearbox 2 is made bilaterally symmetrical so that it can protrude in either direction of the left and right beams 3, 4.

According to the protruding direction of the power transmission shaft 7, it is necessary to replace the tilling drive case 8 and the side frame 12 from side to side.

Therefore, the tilling drive case 8 and the side frame 12 are also symmetrical in the front and rear. Also, even if the left and right side frames 12 and the tillage drive case 8 are replaced, the direction of the tilling claw mounting shaft 9 must remain the same, so the left and right sides of the tilling claw mounting shaft 9 are connected to the flanges of the protruding shaft 14 by flanges 9a and 9b. 14a and tilling claw drive shaft 15
It is configured to be fastened and fixed to the lounge 15a.

Even if the tilling drive case 8 and the side frame 12 are swapped left and right, the spacing between the flanges remains the same.
The combination of the left and right flanges is simply reversed, and no other problems occur.

A sprocket 10 is connected to the power transmission shaft 7, and a sprocket 11 of the tilling pawl drive shaft 15 is connected via a chain.
will be communicated to.

A bearing case 17 for the protruding shaft 14 is fixed to the lower end of the side frame 12, but this bearing case 17 has a smaller amount of downward protrusion than the tilling drive case 8, and the amount of protrusion from the side is smaller than that of the tilling drive case 8. The amount of protrusion is also small. Therefore, if the bearing case 17 side is turned on the ridge side, it will not run over the edge of the ridge.

The side frame 12 and the tilling transmission case 8 have a common mounting hole so that both can be mounted to the beams 3 and 4.

FIG. 3 shows a left-hand and right-hand type input gearbox according to the present invention, and FIG. 4 shows a conventional input gearbox 16. The same bearings 16 and 17 are used to provide sufficient strength to transmit power to both the left and right sides. Conventionally, the left and right sides were supported by bearings of different sizes depending on the load, or they were cantilevered. Of course, the present invention may be used as a cantilevered bearing device.

As described above, the present invention configures the input gear box of the side drive type rotary tiller in a bilaterally symmetrical manner, and has the function of attaching the power transmission shaft in the beam in either the left or right direction, so that the tilling drive case can be mounted on the right or left side. This allows us to provide a wide variety of models to suit the preferences of left-handed and right-handed customers, and it is easy to convert models by simply changing the assembly direction using the same parts. It can be replaced.

Therefore, it was possible to increase the number of model elements without increasing the cost.

[Brief explanation of the drawing]

Figure 1 is a diagram showing the side drive type rotary tiller of the present invention with the tilling drive case installed on the right side when viewed from the rear, Figure 2 is a diagram showing the same installed on the left side, and Figure 3 is the side drive type rotary tiller of the present invention. FIG. 4 is a sectional view of a conventional input gearbox. 2...Input gearbox, 3, 4...Beam,
7...Power transmission shaft, 8...Plowing drive case.

Claims (1)

[Scope of utility model registration request] Side drive rotary tiller. A side drive type characterized by having a symmetrical input gearbox, allowing the power transmission shaft inside the beam to be installed in either the left or right direction, and the tilling drive case being able to be installed on either the right or left side. Rotary tillage device.