JPH0350643Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention is a rotary tilling device attached to the rear work implement attachment device of an agricultural tractor. The present invention relates to the structure of a feedback wire receiving device of a depth control device which can also be equipped with a pawl device and can be used as a two-axis rotary tilling device.

(b) Prior Art Many prior applications have been filed by the same applicant for two-shaft rotary tilling devices.

Furthermore, in rotary tillage devices, many techniques are known in which the rear cover is used as a sensor for a depth control device. For example, Japanese Patent Application Laid-open No. 109505/1983.

(c) Problems to be solved by the invention This invention is a rotary tiller that can be used in two forms: a single-shaft rotary tiller and a two-shaft rotary tiller. The same guide member was used, and the guide member of the feedback wire was switched between the uniaxial type and the biaxial type so that depth control could be performed using the rear cover as a sensor in both cases. This made it possible.

This allows the rear cover to be shared,
Additionally, simply replacing the rear cover can eliminate the need to replace the outer receiver of the feedback wire.

(d) Means for solving the problem The purpose of the present invention is as described above, and the configuration for achieving the purpose will now be explained.

A soil crushing claw device attached to a single-shaft rotary tillage device can be attached and removed freely, and can also be used as a two-shaft rotary tillage device,
This rotary tillage device is characterized in that the feedback wire guide member of the depth control device, which uses the rear cover as a sensor, is rotated back and forth to enable depth control in both 1-axis and 2-axis types. .

(e) Embodiments and operations The purpose and structure of the present invention are as described above, and the operations of the invention will now be explained in conjunction with the structure of the embodiment shown in the attached drawings.

FIG. 1 is a side view of the case where a soil crushing claw device is attached and used as a two-shaft rotary tilling device. FIG. 2 is a side view of a uniaxial rotary tiller with the soil crushing device removed. FIG. 3 is a side view of the guide member 1 rotated forward for use in a single-axis rotary tiller. FIG. 4 is a side view of the guide member 1 for a two-shaft rotary tiller in a state where it is rotated rearward.
Figure 5 is a plan view of the feedback wire, outer receiving rod 7, etc. Figure 6 shows the guide member bracket 8.
Rear view of the part. 7 and 8 are a side view and a rear view of the guide member bracket 8. FIG.

The structures of a two-shaft rotary tiller and a single-shaft rotary tiller will be explained with reference to FIGS. 1 and 2.

The power transmission shaft 23 in the main beam 22 transmits power to the tilling transmission case 21, and the rough tilling claw 1
5a is rotated in the down cut direction. 15 is a rough tilling claw composed of a machete claw. Another power transmission case 2 is attached to the end of the power transmission shaft 23.
5 is provided, and the crushing claw shaft 14a is rotated in the up-cut direction by obtaining reverse rotation with a bevel gear. 1
4 is a crushed earth claw made of Tomoe Tsume.

A depth spar 11 is provided with the front end pivoted to the rotary gearbox, and a hanger rod 5 is attached to the rear end.
The rear cover 4 is suspended through the. A spring 1 is installed between the hanger rod 5 and the depth bar 11.
2 are interposed above and below, and have the role of suspending the rear cover 4 and pressing the cultivated soil with hanger rods.

Reference numeral 16 denotes a tilling cover that covers the rotating outer periphery of the rough-raising tilling claws 15, and 17 indicates a crushing soil tilling cover that covers the rotating outer periphery of the crushing soil claws 14.

In the case of a two-shaft rotary tilling device, the crushed soil tilling cover 1 is attached to the pivot shaft 18 at the rear end of the tilling cover 16.
7, and furthermore, a rear cover 4 is pivotally supported on a pivot shaft 19 at the rear end of the crushed soil tilling cover 17. 20 is a rake for crushing soil.

In the case of a two-shaft rotary tiller, the rear cover is separated from the tiller cover 16, so the outer receiver rod 7, which guides the sensor rod 3 and is provided with an outer receiver for the feedback wire 2, is installed as shown in FIG. It is necessary to position it toward the rear and close to the rear cover 4.

As shown in FIG. 2, when there is no crushing soil tilling device, the rear cover 4 is close to the tilling cover 16, so
The guide member 1 rotates forward.

As shown in FIGS. 7 and 8, the guide member bracket 8 is fixed to the tilling cover 16, and the pivot shaft 10 of the guide member 1 is pivotally supported. The guide member bracket 8 has a long hole 8c in which the guide pin 1c rotates, and a screw hole 8 that fixes the guide pin 1c in the forward and backward rotational positions.
a, 8b are provided, and a wing bolt 9 is screwed onto the wing bolt 9 to enable fixation.

The guide member 1 has its lower end pivotally supported on a pivot shaft 10, and its upper end rotatably supports an outer receiving rod 7. Outer receiving rod 7 is sensor rod 3
A sensor rod hole 7b into which the sensor rod is loosely fitted, and an outer receiving portion 7a for receiving the outer 2b of the feedback wire 2 are provided. In the present invention, the position of the outer receiving portion 7a is changed between a uniaxial type and a biaxial type.

An inner receiver 6 is provided at the tip of the sensor rod 3 so as to be adjustable with an adjustment nut 6a, and the tip of the inner 2a of the feedback wire 2 is received by the inner receiver 6. Since the outer receiving rod 7 is rotatable relative to the guide member 1, the sensor rod 3 can be received anywhere by rotating the guide member 1 to change its position.

Therefore, whether it is a uniaxial type or a biaxial type, depth control can be performed in the same way simply by rotating the guide member 1 back and forth.

(f) Effects of the invention Since the invention is constructed as described above, it has the following effects.

First, depth control can be performed using the same rear cover as a sensor for both single-shaft rotary tillers and double-shaft rotary tillers.

Second, when switching between the 1-shaft type and the 2-shaft type, there is no need to remove the outer and inner receiving parts of the feedback wire, and the replacement work can be made easier by simply adjusting the rear cover and guide member. It was made.

Thirdly, since the same rear cover can be used for both the uniaxial type and the biaxial type, the cost can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a side view of the case where a soil crushing claw device is attached and used as a two-shaft rotary tilling device. FIG. 2 is a side view of a uniaxial rotary tiller with the soil crushing device removed. FIG. 3 is a side view of the guide member 1 rotated forward for use in a single-axis rotary tiller. FIG. 4 is a side view of the biaxial rotary tiller in which the guide member 1 is rotated rearward. FIG. 5 is a plan view of the feedback wire, outer receiving rod 7, etc. FIG. 6 is a rear view of the guide member bracket 8 portion. 7 and 8 are a side view and a rear view of the guide member bracket 8. FIG. 1... Guide member, 2... Feedback wire, 3... Sensor rod, 4... Rear cover.

Claims (1)

[Scope of utility model registration request] In a single-shaft rotary tiller that is equipped with crushing claws so that it can also be used as a two-shaft rotary tiller, the feedback wire guide member of the depth control device, which uses the rear cover as a sensor, can be rotated back and forth. A rotary tillage device characterized in that depth control is possible in both a single-shaft type and a two-shaft type rotary tillage device.