JP2536522Y2 - Middle cultivation equipment such as orchards - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a middle cultivation apparatus such as an orchard suitable for middle cultivation of a field where a tractor such as an orchard, a speed sprayer or the like travels and is pressed.

[0002]

2. Description of the Related Art Conventionally, a linear spiral excavating blade that rotates at a substantially predetermined pitch along an imaginary cylinder is mounted on a vertical rotating shaft, and the vertical rotating shaft is rotated forward to thereby make the spiral excavating blade in the soil. Cultivation in order to extract the spiral excavation blade that has entered the soil by reversing the vertical rotation axis, or to stop the rotation of the vertical rotation axis when extracting the spiral excavation blade that has entered the soil An apparatus in which a tractor, a middle tillage, and a digging apparatus are mounted on a traveling body is known, for example, from Japanese Utility Model Application Laid-Open No. 62-190406 filed by the present applicant.
In the above-mentioned tilling, medium tilling, and burrowing equipment, the tractor is driven by a tractor such as an orchard or a speed sprayer, etc., so that it is adaptable to work in a field having high hardness soil and bad conditions with a lot of rubble. It has been confirmed that it is high.

[0003]

SUMMARY OF THE INVENTION In the above prior art, a tilling, medium tilling, and digging device comprising a vertically extending spiral digging blade is vertically moved at a predetermined position on the traveling body. While the spiral digging blade is performing tillage, medium tillage, and digging work, the traveling of the traveling body is stopped, and therefore, the working efficiency cannot be increased. The present invention has been made to solve the above problems.

[0004]

In order to achieve the above object, according to the present invention, a vertical rotary shaft is provided with a linear spiral excavating blade which turns at a substantially predetermined pitch along an imaginary cylinder. Attach the traveling tiller with the middle tillage device that makes the spiral excavation blade excavate in the soil by rotating the rotation axis forward and pulls out the spiral excavation blade that entered the soil by reversing the vertical rotation axis. The medium tillage device supports the traveling body so that it can move in the vertical direction and the front-back direction, excavates the spiral excavation blade into the soil, and then removes it from the soil, and excavates the spiral excavation blade into the soil. By making the moving amount of the traveling body from the start to the removal and the moving amount of the spiral excavating blade in the front-back direction with respect to the traveling body the same, the spiral excavating blade is raised and lowered at almost the same position, and the middle tillage work is performed. It is configured so that it can be performed continuously. The features.

[0005]

According to the above construction, the medium tilling device is supported so as to be able to move up and down and back and forth with respect to the traveling body so that the spiral excavating blade can be dug into the soil and then removed from the soil. The amount of travel of the traveling body from the start of excavation into the soil of the spiral excavation blade until it is extracted is the same as the amount of travel of the spiral excavation blade in the front-rear direction with respect to the traveling body. The work efficiency is greatly improved because the work can be lifted and lowered at the same position to perform continuous tillage work.
In addition, the support structure that supports the middle tillage device so as to be able to move in the up-down direction and the front-back direction with respect to the traveling body is simple, and does not significantly increase the weight or increase the production cost.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be specifically described below with reference to the accompanying drawings. In the drawing, reference numeral 1 denotes a traveling body. The traveling body 1 has a pair of left and right support wheels 3 mounted on a front end portion of a main body frame 2 and a hitch portion 4 provided on a rear end portion of the main body frame 2. The hitch portion 4 is connected to a driving vehicle such as an agricultural tractor (not shown) to travel forward (in the direction of the arrow). The support wheels 3, 3 take out the ground contact rotating force from the rotating shaft 3a and rotationally drive a below-described tillage device. On the main body frame 2 between the support wheels 3 and 3 and the hitch portion 4, a pair of left and right middle plows 5 and 5 are provided.

[0007] The above-mentioned middle cultivation apparatus 5 has a linear spiral excavation blade 9 which rotates at a substantially predetermined pitch along an imaginary cylinder mounted on a vertical rotation shaft 8 of a hydraulic motor 7 supported by an excavation blade support frame 6. By rotating the vertical rotation shaft 8 forward, the spiral excavation blade 9 is dug vertically in the soil, and by reversing the vertical rotation shaft 8, the spiral excavation blade 9 that has entered the soil is vertically extracted. Like that. In this embodiment, the vertical rotating shaft 8 is also rotated forward when the spiral excavating blade 9 is removed from the soil, and the spiral excavating blade 9 is excavated in the soil while the vertical rotating shaft 8 is normally rotated. The spiral digging blade 9 that has entered can be extracted, and the rotation of the vertical rotating shaft 8 is stopped when the spiral digging blade 9 that has entered the soil is extracted, thereby expanding the range in which the soil is crushed. It can also be done.

The main body frame 2 has a rotating shaft support 10
Rotation power is transmitted from a rotation shaft 3 a of the support wheel 3 via a chain transmission system 12 to a rotation shaft 11 that is horizontally supported by the rotation shaft support 10. Crank arms 13, 13 are attached to both ends of the rotating shaft 11 with the phases thereof reversed by 180 degrees, and the distal ends of the crank arms 13, 13 are pivotally attached to the side portions of the excavating blade support frame 6. Have been. A pair of left and right slide arms 14, 14 are provided in the main body frame 2 behind the rotation shaft support 10 in parallel along the length direction of the main body frame 2, and are slidable on the slide arms 14, 14. The parallel links 16, 16 are attached to the sliders 15, 15 inserted into the
Is pivotally supported, and the other ends of the parallel links 16, 16 are pivotally attached to the rear portion of the excavating blade support frame 6 to form a parallelogram link.

A one-way clutch (cam clutch) is provided between the rotation shaft 3a of the support wheel 3 and the chain transmission system 12. By the action of this one-way clutch,
In the chain transmission system 12, the rotation shaft 3a of the support wheel 3
Are configured to transmit power to the side that drives the rotating shaft 11, but do not act on the side that drives the rotating shaft 3a. The middle tillage device 5 rotates around the rotation shaft 11 and makes the peripheral speed thereof substantially equal to the peripheral speed of the support wheel 3. However, because of the circular motion, the relative speed with respect to the field scene (horizontal direction) Component) will change trigonometrically. That is, in the initial stage of the excavation of the spiral excavation blade 9, the traveling speed of the middle tillage device 5 in the front-rear direction is relatively small, and if there is no one-way clutch, an excessive force in the lateral direction is applied to the spiral excavation blade 9. Will be. In the latter stage of the removal of the spiral excavating blade 9 from the soil, a force in the opposite direction to that of the initial stage of the excavation is applied. In this case, the one-way clutch does not release the force, but at this point, the soil is already crushed. As a result, no extremely excessive force is applied to the spiral excavation blade 9.

[0010] Then, when the traveling body 1 travels forward and the rotating shaft 3a of the support wheel 3 moves the chain transmission system 1
Rotational power is transmitted to the rotating shaft 11 via the
When 1 rotates, the crank arms 13 and 13 rotate in opposite phases. When the medium tilling apparatus 5 rotates, the sliders 15, 15 slide along the slide arms 14, 14 via the parallel links 16, 16, and the spiral excavating blades 9, 9
Moves up and down almost vertically to perform medium tillage work.

As described above, the middle tillage device 5 is rotated by the crank arms 13, 13 with respect to the traveling body 1, and is alternately moved in the front-rear direction by the sliders 15, 15 and the slide arms 14, 14. During this time, the spiral excavating blade 9 rotated by the hydraulic motor 7 is excavated in the soil in the vertical direction, and then is extracted vertically from the soil. Here, the peripheral speed of rotation of the middle tillage device 5 is
And the amount of movement of the traveling body 1 between the start of excavation of the spiral excavation blade 9 into the soil and the extraction thereof, and the amount of movement of the spiral excavation blade 9 in the front-rear direction with respect to the traveling body 1. Are almost the same, so that the spiral excavation blade 9 moves up and down at almost the same position, so that the middle plowing operation by the middle tillage device 5 can be continuously performed while the traveling body 1 is running.

In the middle tillage device such as an orchard having such a configuration, the hitch portion 4 is connected to the front or side of a driving vehicle such as an agricultural tractor so that the traveling body 1 travels forward. A tractor such as an orchard, a speed sprayer or the like travels and is introduced into a stepped down field to be used for middle tillage work. When the traveling body 1 travels forward, the support wheels 3, 3 rotate due to the ground contact friction and rotate the rotating shaft 3a. The rotating force is taken out by the chain transmission system 12 and transmitted to the rotating shaft 11, and the crank arm 13 , 1
3 rotates to rotate the middle tillage device 5 in the front-rear direction. When the medium tilling device 5 rotates, the sliders 15, 15 slide along the slide arms 14, 14 via the parallel links 16, and are rotated in a predetermined direction by the hydraulic motor 7 and the vertical rotation shaft 8. The excavation blades 9, 9 move up and down in a substantially vertical direction to perform the middle plowing operation.

The rotation peripheral speed of the middle cultivator 5 is substantially equal to the peripheral speed of the support wheel 3, and the moving amount of the traveling body 1 from the start of the excavation of the spiral excavation blade 9 to the excavation until the extraction is performed. And the amount of movement of the spiral excavating blade 9 in the front-rear direction with respect to the traveling body 1 is substantially the same, so that the spiral excavating blade 9 moves up and down at substantially the same position, and the middle plowing operation of the middle plow 5 without stopping traveling of the traveling body 1 Can be performed continuously. Accordingly, the work efficiency is greatly improved as compared with the conventional one in which the traveling of the traveling body is stopped from the start to the end of the middle tillage.

[0014]

As described above, according to the middle cultivation device of the orchard or the like of the present invention, the middle cultivation device is supported so as to be able to move in the vertical direction and the front-rear direction with respect to the traveling body, and the spiral excavation blade is provided with soil. After digging inside, so that it can be extracted from the soil,
The amount of travel of the traveling body from the start of excavation into the soil of the spiral excavation blade until it is extracted is the same as the amount of travel of the spiral excavation blade in the front-rear direction with respect to the traveling body. The work efficiency can be greatly improved because the work can be lifted and lowered at the position to perform the continuous tillage work continuously. Further, the support structure for supporting the middle tillage device so as to be able to move in the vertical direction and the front-back direction with respect to the traveling body is simple, and therefore, the weight of the middle tillage device is significantly increased and the production cost is increased. Or not.

[Brief description of the drawings]

FIG. 1 is a side view of an embodiment of the present invention.

FIG. 2 is a plan view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Running body 2 Main body frame 3 Support wheel 4 Hitch part 5 Middle tillage device 6 Excavation blade support frame 7 Hydraulic motor 8 Vertical rotation axis 9 Screw excavation blade 10 Rotation axis support part 11 Rotation axis 12 Chain transmission system 13 Crank arm 14 Slide arm 15 Slider 16 Parallel link

Claims (1)

(57) [Scope of request for utility model registration] 1. A linear spiral excavating blade that rotates at a substantially predetermined pitch along a virtual cylinder is mounted on a vertical rotation axis, and the vertical rotation axis is rotated forward to excavate the spiral excavating blade into the soil. Then, a vertical cultivation device that pulls out a spiral excavation blade that has entered the soil by reversing the vertical rotation axis is mounted on a traveling body, and the above-described medium cultivation device moves vertically and forward and backward with respect to the traveling body. After the spiral excavation blade is dug into the soil by supporting it as much as possible, it is to be extracted from the soil, the amount of travel of the traveling body from the start of excavation of the spiral excavation blade into the soil until it is extracted, and the spiral excavation Orchard, etc., characterized in that by making the amount of movement of the blade in the front-rear direction with respect to the traveling body the same, the spiral excavation blade can be raised and lowered at almost the same position, so that the middle plowing operation can be performed continuously. Medium tillage equipment.