JP2004173601A - Agricultural working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an agricultural working machine having simplified structure. <P>SOLUTION: This agricultural working machine 1 carries out a prescribed operation while moving frontward according to the travel of a tractor, and has a foldable shape. The farm equipment 1 has a right and left pair of land-leveling bodies 40 for carrying out a land-leveling operation in an upward and downward turnable free state, and carrying out a soil-pulling operation in an upward and downward unturnable locked state. The right and left pair of the land-leveling bodies 40 can be exchanged between a folded unoperatable state and an opened operable state by the upward and downward turning by centering one common shaft 32 for the land-leveling bodies common to both of the right and left pair of the land-leveling bodies 40. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a foldable agricultural working machine that performs a predetermined operation while moving forward by traveling of a traveling vehicle.
[0002]
[Prior art]
A conventional farm machine includes a pair of left and right leveling bodies (for example, a rake) that perform leveling work in a free state that can rotate up and down and perform earthing work in a locked state that cannot rotate up and down. The body can be switched between the folding non-working state and the unfolding working state by rotating up and down around separate shaft members corresponding to the body (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent No. 3199346 (first page, FIG. 1)
[0004]
[Problems to be solved by the invention]
However, the conventional farm work machine requires a separate shaft member corresponding to each of the pair of left and right leveling bodies, so that there is a problem that the number of parts tends to increase and the configuration cannot be simplified.
[0005]
This invention is made | formed in view of such a point, and it aims at providing the agricultural machine which can aim at simplification of a structure.
[0006]
[Means for Solving the Problems]
The agricultural machine according to claim 1 is a foldable agricultural machine that is connected to a traveling vehicle and performs a predetermined operation while moving forward by the traveling of the traveling vehicle. A pair of left and right leveling bodies that perform work and perform earthing work in a locked state that cannot be rotated up and down, and the pair of left and right leveling bodies are common to each of the pair of left and right leveling bodies. It is possible to switch between the folding non-working state and the unfolding working state by turning around the shaft.
[0007]
Since the pair of left and right leveling bodies can be switched between the folding non-working state and the unfolding working state by turning around one common leveling body common axis for each of the pair of left and right leveling bodies. Therefore, the number of parts is reduced, and the configuration is simplified.
[0008]
The agricultural machine according to claim 2 is the agricultural machine according to claim 1, further comprising a leveling body operating means capable of simultaneously setting a pair of left and right leveling bodies in a free state and a locked state, The lower end portion is connected to the leveling body common shaft.
[0009]
Then, by operating the leveling body operating means having the lower end connected to the leveling body common shaft, the pair of left and right leveling bodies can be reliably set to the free state and the locked state all at once.
[0010]
The agricultural machine according to claim 3 is a foldable agricultural machine that is connected to a traveling vehicle and performs a predetermined operation while moving forward by traveling of the traveling vehicle, and is coupled to a rear portion of the traveling vehicle. A fixed machine frame having a connecting portion, and a pair of left and right tillage leveling means provided on the fixed machine frame so as to be switchable between a folding non-working state and a unfolding work state. A movable machine frame rotatably provided on the fixed machine frame; a cultivating body rotatably provided on the movable machine frame; and a vertically movable pivotable body provided on the movable machine frame; A first leveling body that performs leveling work at a rear position of the tillage body, and is provided on the first leveling body so as to be rotatable up and down. A second leveling body that performs earthing work in a locked state, The pair of movable machine frames are connected to each other via a single machine frame common shaft common to each of the pair of left and right movable machine frames, and the pair of left and right second leveling bodies are the second pair of left and right second grounding bodies. Are connected to each other through one common leveling body common axis, and when the machine frame common axis and the leveling body common axis are positioned substantially in a straight line, the movable machine frame and the first As the two leveling bodies rotate around the machine frame common axis and the leveling body common axis, the tilling leveling means is switched between the folding non-working state and the unfolding working state.
[0011]
Then, when the machine frame common axis and the leveling body common axis are located on a substantially straight line, the movable machine frame and the second leveling body rotate around the machine frame common axis and the leveling body common axis, respectively, Since the tillage leveling means can be switched between the folding non-working state and the unfolding working state, the number of parts is reduced and the configuration is simplified.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of an agricultural machine according to the present invention will be described with reference to the drawings.
[0013]
In FIG. 1 to FIG. 5, reference numeral 1 denotes a foldable agricultural working machine having a longitudinal shape in the left-right direction. A rake or the like that is connected so as to be able to move up and down and performs a predetermined work such as a tilling work while moving a field such as a paddy field forward (traveling direction) by running of the tractor. In addition, this agricultural working machine 1 is, for example, a left and right two-divided type.
[0014]
The agricultural machine 1 includes a fixed machine frame 3 having a three-point connecting portion 2 that is a connecting portion that is connected to a three-point link portion (three-point support device) that is a rear working device connecting portion of the tractor so as to be movable up and down, This fixed machine frame 3 is provided so as to be switchable between a folding non-working state and a unfolding working state by turning up and down (for example, β = about 85 °) about one turning center axis X in the substantially front-rear direction. Tillage leveling means 4 that is a pair of left and right earth working units is provided (see FIG. 5).
[0015]
Note that the three-point link portion of the tractor includes a single top link, a pair of left and right lower links, and driving means for vertically rotating each link. The three-point connecting portion 2 of the fixed machine frame 3 is composed of a single top mast 5, a pair of left and right lower arms 6, and the like.
[0016]
The fixed machine frame 3 has a transmission case 12 that is a substantially box-shaped shaft holding part that rotatably holds the input shaft 11 for inputting the power from the tractor to the agricultural machine 1. Have in the department. The input shaft 11 held by the mission case 12 is disposed at a substantially central portion in the left-right direction of the agricultural machine 1. And the rotation center axis line Y of this input shaft 11 is located in the horizontal direction approximate center part of the agricultural working machine 1, and substantially corresponds with the rotation center axis line X which is a folding center axis line of the tillage leveling means 4 in planar view. Yes.
[0017]
Further, a power transmission means 13 for transmitting the power from the input shaft 11 to the tillage leveling means 4 protrudes downward from the lower surface of the transmission case 12 of the fixed machine frame 3 (see FIGS. 4 and 5). ). A shaft mounting member 15 having support plate portions 16 that are spaced apart from each other in the front-rear direction is detachably mounted on the upper surface portion of the transmission case 12 (see FIG. 7).
[0018]
Further, a stand holder 22 for detachably attaching a stand device 21 that supports the agricultural working machine 1 at the time of storage or the like is provided at both left and right ends of the fixed machine frame 3.
[0019]
Further, on both the left and right sides of the fixed machine frame 3, fold fixing means 23 for releasably fixing the tillage leveling means 4 in a non-folded state to the fixed machine frame 3 are provided, and the unfolded working state An unfolding fixing means 24 for releasably fixing the tillage leveling means 4 to the fixing machine frame 3 is provided. The unfolding fixing means 24 is of a double lock type having two release levers 25, for example, and the folding fixing means 23 is also of a double lock type.
[0020]
On the other hand, the pair of left and right tillage leveling means 4 is common to each of the pair of left and right tillage leveling means 4, and is centered on one rotation center axis line X that is located at a substantially central portion in the left and right direction of the agricultural work machine 1. Each of the common shaft members which are common to each of the pair of left and right tillage leveling means 4 and which are disposed on the rotation center axis line X and disposed at the substantially central portion in the left-right direction of the agricultural work machine 1 By switching up and down about a single machine frame common shaft 31 and a leveling body common shaft 32, the state can be switched between the folding non-working state and the unfolding working state.
[0021]
That is, the pair of left and right tillage leveling means 4 is substantially rotated by turning upward about a forwardly inclined rotation center axis (machine frame common axis 31 and leveling body common axis 32) X inclined with respect to the vertical direction. It is switched to the V-shaped folding non-working state, and is substantially linear and horizontal by rotating downward about a forward tilting rotation center axis (machine frame common shaft 31 and leveling body common shaft 32) X. It can be switched to the unfolding work state.
[0022]
Here, each of the pair of left and right tillage leveling means 4 is bilaterally symmetric, and is fixed to the fixed machine frame 3 via a single machine frame common shaft 31 that is positioned substantially above the center of the fixed machine frame 3 in the horizontal direction. The movable machine frame 35 is provided so as to be rotatable up and down.
[0023]
The movable frame 35 is rotatably provided with a rotary type tiller (rotary) 36 that receives power from the power transmission means 13 having a tilling function and performs a tilling operation while driving and rotating in a predetermined direction. . The upper side of the cultivating body 36 is covered with a cover portion of the movable machine frame 35, and the movable machine frame 35 also has a cover function for the cultivating body 36.
[0024]
In addition, a substantially plate-shaped first leveling body (level flat plate) 37 that performs leveling work at the rear position of the tillage body 36 is interposed through a rubber plate 38 at the rear end of the movable machine frame 35 having the cover function. It is provided so that it can turn up and down.
[0025]
Further, at the rear end portion of the first leveling body 37, the ground leveling work is performed in a free state in which the vertical rotation is possible at the rear position of the tilling body 36, and the earthing work is performed in a locked state in which the vertical rotation is not possible. A second leveling body (rake) 40, which is a plate-shaped leveling body, is provided so as to be rotatable up and down via a rotation shaft 41 in the left-right direction. The pair of left and right second leveling bodies 40 are not folded and unfolded by rotation about a single leveling body common shaft 32 common to each of the pair of left and right second leveling bodies 40. The state can be switched.
[0026]
The pair of left and right movable machine frames 35 are connected to each other via one machine frame common shaft 31 common to each of the pair of left and right movable machine frames 35.
[0027]
That is, for example, the inner end portion of the reinforcing connecting pipe portion 43 of the movable machine frame 35 on the right side in the traveling direction and the inner end portion of the reinforcing connecting pipe portion 43 of the movable machine frame 35 on the left side in the moving direction are the transmission case 12 of the stationary machine frame 3. Are connected to each other via a single machine frame common shaft 31 attached to the upper surface portion via a shaft attachment member 15. The substantially cylindrical inner end portion of the reinforcing connecting pipe portion 43 of the right movable machine frame 35 is pivotally connected to the rear portion of the machine frame common shaft 31, and is substantially the same as the reinforcing connecting pipe portion 43 of the left movable machine frame 35. A cylindrical inner end portion is rotatably connected to a front portion of the machine frame common shaft 31. The reinforcing connecting pipe portion 43 is formed on the front end portion of the movable machine frame 35 over substantially the entire length of the front end portion.
[0028]
The pair of left and right second leveling bodies 40 are connected to each other via a single leveling body common shaft 32 common to each of the pair of left and right second leveling bodies 40.
[0029]
That is, for example, the inner end portion of the second leveling body 40 on the right side in the traveling direction and the inner end portion of the second leveling body 40 on the left side in the traveling direction are connected to each other via the single leveling body common shaft 32. . Leveling into a hole in the U-shaped portion 44 formed at the inner end of the right second leveling body 40 and a hole in the U-shaped portion 44 formed at the inner end of the left second leveling body 40 The body common shaft 32 is inserted.
[0030]
When the machine frame common shaft 31 between the two movable machine frames 35 and the leveling body common shaft 32 between the two second leveling bodies 40 are positioned on a substantially straight line (rotation center axis X), manual operation can be performed. The left and right movable machine frames 35 and the second leveling body 40 rotate about the machine frame common shaft 31 and the leveling body common shaft 32, respectively, so that the pair of left and right tillage leveling means 4 are substantially V-shaped. Can be switched between a folding non-working state and a substantially straight horizontal unfolding working state. A gas spring 45 is disposed between the fixed machine frame 3 and the movable machine frame 35 in order to facilitate human manual operation.
[0031]
On the other hand, as shown in FIG. 6, the farm work machine 1 includes a single leveling body operating means 51 that can set a pair of left and right second leveling bodies 40 simultaneously to a free state and a locked state.
[0032]
The leveling body operating means 51 is disposed between the horizontal center of the fixed machine frame 3 and the leveling body common shaft 32. That is, the upper end portion of the leveling body operating means 51 is connected to the substantially central portion in the left-right direction of the fixed machine frame 3, and the lower end portion of the leveling body operating means 51 is connected to the leveling body common shaft 32.
[0033]
The leveling body operating means 51 has, for example, a first connecting arm 53, and a lower end portion of the first connecting arm 53 is rotatably connected to a connecting member 54 via a support shaft 55 in the left-right direction. ing. The connecting member 54 is fitted on the outer peripheral side of the leveling body common shaft 32 so as to be rotatable in the circumferential direction of the leveling body common shaft 32.
[0034]
The upper end portion of the first connecting arm 53 is rotatably connected to the rear end portion of the second connecting arm 56 via a support shaft 57 in the left-right direction. The second connecting arm 56 is rotatably connected to a substantially central portion in the left-right direction of the stationary machine frame 3 via a support shaft 58 in the left-right direction. An engagement pin 59 in the left-right direction is provided at the intermediate portion of the second connection arm 56. The engagement pin 59 can be engaged and disengaged with respect to the engagement groove 62 of the operation lever 61 provided at the substantially central portion in the left-right direction of the stationary machine frame 3 so as to be rotatable about the rotation shaft 60 in the left-right direction. It has become.
[0035]
Then, the engagement between the engagement groove 62 and the engagement pin 59 is released based on the forward rotation operation of the operation lever 61 on the upper end side of the leveling body operating means 51, and the pair of left and right second leveling bodies 40. Are simultaneously set in a free state in which the rotary shaft 41 can rotate up and down around the rotation shaft 41 (solid line in FIG. 6). The second leveling body 40 set in the free state is in a substantially horizontal posture and follows the ground leveling work while touching the surface of the field.
[0036]
Further, the engaging groove 62 and the engaging pin 59 are engaged with each other based on the backward rotation operation of the operation lever 61, and the pair of left and right second leveling bodies 40 are collectively centered on the rotation shaft 41. It is set to a locked state of a substantially standing posture that cannot be vertically rotated (two-dot chain line in FIG. 6).
[0037]
As shown in FIG. 1, the angle α formed by the line Z along the lower edge of the outer plate 35a of the movable frame 35 of the tillage leveling means 4 and the rotation center axis X is, for example, an angle of 0 to 55 °. It is. The lower edge portion of the outer plate 35a moves while touching the field surface along the field surface during work. Further, the separation distance between the rotation center axis R and the rotation center axis X of the tillage body 36 is, for example, 30 to 50 cm.
[0038]
Next, the operation and the like of the above embodiment will be described.
[0039]
When plowing and leveling work (for example, plowing work or earthing work) is performed using the farm work machine 1, after the farm work machine 1 is connected to the rear part of the tractor, the stand device 21 is removed from the stand holder 22 of the fixed machine frame 3.
[0040]
Next, if the pair of left and right tillage leveling means 4 is in a non-folding state, the pair of left and right tillage leveling means 4 is positioned substantially coaxially after the folding fixing means 23 is unlocked. By switching downward about the inclined machine frame common shaft 31 and the leveling body common shaft 32, the operation state is switched to a substantially straight horizontal deployment work state.
[0041]
When the farm machine 1 is moved forward by the traveling of the tractor, the tilling work is performed by the tilling body 36 of the both tilling leveling means 4 in the unfolding work state, and the first leveling body 37 and the second in the free state are operated. Leveling work is performed by the leveling body 40.
[0042]
In addition, when performing earthing work at the side of a farm, etc., the pair of left and right second leveling bodies 40 cannot be rotated up and down by rotating the operation lever 61 of the leveling body operating means 51 backward. Set to locked state.
[0043]
In addition, after the tillage leveling work or the like is finished, for example, when the agricultural machine 1 is transported to the warehouse, before the deployment fixing means 24 is unlocked, both the left and right pair of tillage leveling means 4 are positioned substantially on the same axis. By switching upward about the inclined machine frame common shaft 31 and the leveling body common shaft 32, the state is switched to a substantially V-shaped folding non-working state.
[0044]
When the both tillage leveling means 4 rotate upward and switch to a substantially V-shaped folding non-working state, the length in the left-right direction of the whole farming machine 1 (the width of the whole farming machine 1) is the same as before folding. Since the amount of protrusion of the farm work machine 1 to the side of the tractor is reduced to less than half, traveling safety can be easily ensured, and the farm work machine 1 can be easily transported.
[0045]
Thus, according to the agricultural working machine 1 of the above-described embodiment, the rotation center axis X common to each of them, that is, for example, the two machine frame common shaft 31 and the leveling body common shaft 32 are the center. Is turned into a substantially V-shaped folding non-working state projecting obliquely rearward and upward from the fixed machine frame 3, and one common rotation center axis X, that is, for example, two machines. Provided with a pair of left and right tillage leveling means 4 that can be switched to a substantially straight horizontal unfolding state projecting sideways from the fixed machine frame 3 by rotating downward about the frame common shaft 31 and the leveling body common shaft 32 Therefore, the number of parts such as shaft members can be reduced compared with the conventional configuration in which both tillage leveling means rotate around two separate rotation center axes corresponding to each, respectively. Simplify and reduce weight Can be, the manufacturing cost can be reduced.
[0046]
Further, the pair of left and right tillage leveling means 4 can be prevented from coming into contact with the cabin of the tractor during the upward rotation, and the front and rear weight balance and the left and right weight balance can be improved. Since each means 4 is rotated upward and switched to a substantially V-shaped folding non-working state, the rear view from the tractor can be easily secured.
[0047]
Furthermore, by operating the operating lever 61 of the leveling body operating means 51 whose lower end is connected to the leveling body common shaft 32, the pair of left and right second leveling bodies 40 can be reliably set to the free state and the locked state all at once. In addition, the backlash is reduced by reducing the number of parts, and the second leveling body 40 can be stabilized.
[0048]
The farm work machine 1 can also be of a left and right three-division type having a soil working part made up of a tillage body, a first leveling body, a second leveling body, and the like at a substantially central part in the left-right direction.
[0049]
Further, the tilling leveling means 4 is not limited to the one in which the first leveling body 37 is provided via the rubber plate 38 at the rear end portion of the movable machine frame 35 having a cover function. The 1st leveling body 37 may be directly provided in the rear-end part.
[0050]
Moreover, the agricultural working machine 1 is limited to the one provided with a pair of left and right tillage leveling means 4 that can be switched between the folding non-working state and the unfolding working state by turning up and down around one turning center axis X. Instead, a pair of left and right tillage leveling means 4 that can be switched between the folding non-working state and the unfolding working state by turning back and forth about one turning center axis X in the substantially vertical direction may be provided.
[0051]
【The invention's effect】
According to the first aspect of the present invention, the pair of left and right leveling bodies are turned into the folding non-working state and the unfolding working state by rotating around one common leveling body common axis for each of the pair of left and right leveling bodies. Since switching is possible, the number of parts can be reduced and the configuration can be simplified.
[0052]
According to the invention of claim 2, by operating the leveling body operating means having the lower end connected to the leveling body common shaft, the pair of left and right leveling bodies can be reliably set to the free state and the locked state all at once.
[0053]
According to the invention of claim 3, the movable machine frame and the second leveling body are centered on the machine frame common axis and the leveling body common axis, respectively, in a state where the machine frame common axis and the leveling body common axis are positioned substantially in a straight line. Since the tillage leveling means can be switched between the folding non-working state and the unfolding working state, the number of parts can be reduced and the configuration can be simplified.
[Brief description of the drawings]
FIG. 1 is a side view of an embodiment of an agricultural machine according to the present invention.
FIG. 2 is a front view of the agricultural working machine.
FIG. 3 is a plan view of the agricultural working machine.
FIG. 4 is a side view of the agricultural working machine when folded.
FIG. 5 is a front view of the agricultural machine when folded.
FIG. 6 is a side view of the ground leveling means operating means of the agricultural machine.
FIG. 7 is a schematic partial side view of the agricultural working machine.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Agricultural machine 2 3 point | piece connection part 3 which is a connection part Fixed machine frame 4 Tillage leveling means 31 Machine frame common axis 32 Leveling body common axis 35 Movable machine frame 36 Tillage body 37 1st leveling body 40 2nd leveling body Leveling body 51 Leveling body operating means

Claims (3)

A foldable agricultural machine that is connected to a traveling vehicle and performs a predetermined work while moving forward by traveling of the traveling vehicle,
It has a pair of left and right leveling bodies that perform leveling work in a free state that can rotate up and down, and perform earthing work in a locked state that cannot rotate up and down,
The pair of left and right leveling bodies can be switched between a folding non-working state and a unfolding working state by rotation about a common leveling body common axis for each of the pair of left and right leveling bodies. Agricultural work machine characterized by. Provided with a leveling body operating means capable of setting a pair of left and right leveling bodies simultaneously in a free state and a locked state,
The agricultural implement according to claim 1, wherein the leveling body operating means has a lower end connected to a leveling body common shaft. A foldable agricultural machine that is connected to a traveling vehicle and performs a predetermined work while moving forward by traveling of the traveling vehicle,
A fixed machine frame having a connecting portion connected to a rear portion of the traveling vehicle;
A pair of left and right tillage leveling means provided in this fixed machine frame so as to be switchable between a folding non-working state and a deployment working state,
Each of the pair of left and right tillage leveling means
A movable machine frame rotatably provided on the fixed machine frame;
A cultivated body that is rotatably provided in the movable machine frame and performs a cultivating work;
A first leveling body which is provided on the movable frame so as to be vertically rotatable and performs leveling work at a rear position of the tillage body;
The first leveling body is provided so as to be able to rotate up and down, and has a second leveling body that performs leveling work in a free state that allows vertical rotation, and performs earthing work in a locked state that cannot be rotated up and down,
The pair of left and right movable machine frames are connected to each other via one machine frame common shaft common to each of the pair of left and right movable machine frames,
The pair of left and right second leveling bodies are connected to each other via a single leveling body common axis common to each of the pair of left and right second leveling bodies,
The movable machine frame and the second leveling body rotate around the machine frame common axis and the leveling body common axis, respectively, when the machine frame common axis and the leveling body common axis are positioned substantially in a straight line. By doing so, the tillage leveling means can be switched between the folding non-working state and the unfolding working state.

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