JP2000342001A - Foldable farm working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foldable farm working machine wherein an extensible stone-crushing rotary can reliably be rotated by the rotation of a stone-crushing rotary in a state that working width of the stone-crushing rotary is enlarged with the extended stone-crushing rotary and a machine configuration for rotating the extended stone-crushing rotary is simple. SOLUTION: This farm working machine is assembled by installing a stone- crushing rotary 3 and a foldable, extensible working machine body 4 on the working machine body 2, by installing an extensible stone-crushing rotary 5 on the machine body 4 and by rotating the extended stone-crushing rotary 5 through the rotation of the rotary 3. The rotary 3 has coupling parts 25 and 97 protruding at ends of a rotary shaft 18 which have respective coupling sides 24 and 100 formed on the side in the rotational direction of the rotary 3. The extensible stone-crushing rotary 5 has parts 72 and 101 to be coupled which protrude at ends of an extensible rotary shaft 68. The parts 72 and 101 have respective sides 71 and 105 to be coupled onto the respective coupling sides 24 and 100 of the respective coupling parts 25 and 97.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding agricultural machine such as a harrow or a tilling machine, which extends the working width when working and reduces the working width when working when not working.

[0002]

2. Description of the Related Art Conventionally, as a folding agricultural working machine of this type, for example, as disclosed in Japanese Patent Laid-Open Publication No. Sho 51-69003, a soil crushing rotary is rotatably provided on a working machine main body. An extended working body is provided so as to be foldable, and an extended working soil rotary that extends the working width of the soil breaking rotary is rotatably provided on the extended working body,
A plurality of engaging holes are respectively formed in a connecting portion attached to an end of the clay breaking rotary shaft, and a plurality of engaging pins to be inserted from the axial direction into each of the engaging holes at the end of the extended clay breaking rotary, respectively. It has a protruding configuration.

Further, as described in Japanese Patent Application Laid-Open No. 8-191609, an extension clay for extending a working width of the clay crushing rotary by projecting one claw clutch of a clutch device at an end of a rotary shaft of the clay crushing rotary. A configuration is known in which the other pawl clutch of the clutch device that meshes with the one pawl clutch is protruded from an end of an extended rotary shaft of a rotary.

[0004]

Problems to be Solved by the Invention
In the configuration described in Japanese Patent Application Publication No. 003, when the extended crushing rotary is disposed at the end of the crushing rotary, the positions of the plurality of engagement holes on the crushing rotary and the plurality of engaging pins of the extended crushing rotary are shifted. In this case, the plurality of engaging pins cannot be inserted into the plurality of engaging holes, respectively, so that the extended crushing rotary cannot be connected to the crushing rotary, and the plurality of engaging pins are respectively aligned with the plurality of engaging holes. Maneuvering is required and, therefore, the extended earthmoving rotary may not be easily connected to the earthmoving rotary.

In the configuration described in Japanese Patent Application Laid-Open No. Hei 8-191609, an extended soil crushing rotary is disposed at an end of a clay crushing rotary, and a claw clutch is caused by an impact when one claw clutch is engaged with the other claw clutch. In the case of a clutch device having a double-claw clutch that meshes with each other, the configuration of connecting the opposite ends of the rotary shaft of the soil-removing rotary and the extended rotary shaft with the extended soil-revolving rotary becomes complicated, and the manufacturing cost increases. There is a problem that is likely to be high.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and is provided by arranging an extended crushing rotary at an end of a crushing rotary and extending the working width of the crushing rotary to rotate the crushing rotary. It is an object of the present invention to provide a folding agricultural working machine that can reliably rotate an extended crushing rotary, and that can easily rotate the extended crushing rotary with the crushing rotary and reduce manufacturing costs.

[0007]

According to a first aspect of the present invention, there is provided a folding agricultural working machine comprising: a working machine main body; a crushing rotary rotatably provided on the working machine main body; and a folding machine at an end of the working machine main body. An extended working body provided in the extended working body, and an extended soil crushing rotary that is rotatably provided on the extended working body and extends the working width of the crushing rotary, and the crushing rotary in a state where the working width of the crushing rotary is extended. In the folding agricultural working machine that rotates the extended soil crushing rotary by rotation of the rotary crusher, the soil crushing rotary is provided with a rotary shaft, a clay crushing claw protruding from a peripheral surface of the rotary shaft, and a soil crushing rotary provided at an end of the rotary shaft. And an extended body having an engaging surface formed on the rotation direction side thereof. An engaged body formed with a crushed clay claw protruding from a peripheral surface of a lee shaft and an engaged surface provided at an end of the extended rotary shaft and engaged with the engaging surface of the engaging body by rotation of the crushed rotary. And

[0008] When the extension work body is disposed at the end of the work machine body and the extension clay rotary of the extension work body is arranged at the end of the soil crushing rotary of the work machine body, the end of the rotary shaft of the crushing rotary is provided. The working width of the crushing rotary is extended by the extended crushing rotary in a state where the engaging body provided in the portion and the engaged body provided at the end of the extended rotary shaft of the extended crushing rotary are located substantially on the same plane. You.

When the crushing rotary is rotated in this state, the engaging surface of the engaging member provided at the end of the rotary shaft is engaged with the engaging member provided at the end of the extended rotary shaft. The extended crushing rotary is rotated by the rotation of the crushing rotary by the engaging body and the engaged body.

Therefore, at the time of work, the crushed soil is crushed in the extended working width by the crushing claw of the crushing rotary and the crushing claw of the extended crushing rotary which extends the working width of the crushing rotary.

Next, when the extension work body is folded toward the work machine body during non-work, the engaged surface of the engaged body of the extended crushing rotary provided on the extension work body is provided on the work machine body. From the engaging surface of the engaging body of the crushed earth rotary. Then, the entire width of the agricultural work machine is reduced from the work width at the time of work by folding the extension work body on the work machine body.

According to a second aspect of the present invention, there is provided the folding agricultural working machine according to the first aspect, wherein at least one of the engaging body and the engaged body is a residue between opposing ends of the crushed earth rotary and the extended crushed earth rotary. It has a residual crushed soil claw for crushing tillage.

When the cultivated soil is crushed with the working width extended by the crushing rotary and the extended crushing rotary having an extended working width of the crushing rotary, the crushed soil rotary and the extended crushing rotary are opposed by the remaining cultivated crushing claw. It is possible to prevent crushed soil between the end portions, and to prevent a residual tillage portion from being generated therebetween.

According to a third aspect of the present invention, there is provided the folding agricultural working machine according to the first or second aspect, wherein at least one of the engaging surface of the engaging body and the engaging surface of the engaged body has a cushioning material. It is.

[0015] By rotating the crushing rotary, the impact when the engaging surface of the engaging body of the crushing rotary engages with the engaging surface of the engaged body of the extended crushing rotary is buffered by the cushioning material. Thus, damage to the engaging surface and the engaged surface is prevented.

According to a fourth aspect of the present invention, there is provided the folding agricultural working machine according to any one of the first to third aspects, wherein the engaging body is provided to project from a connecting plate fixed to an end of the rotary shaft. The engaging body protrudes from a connected board fixed to an end of the extended rotary shaft, and at least one opposing surface of the connecting board of the engaging body and the connected board of the engaged body has a cushioning material. It is.

Then, the extension working body is disposed at the end of the working machine main body, and the connected board of the extended rotary shaft faces the connecting board of the rotary shaft, and the connected board is engaged with the engaging body of the connecting board. The shock when the connecting board comes into contact with the engaged body of the connected board is buffered by the cushioning material.

Further, since the shock when the connected board comes into contact with the connecting board is buffered by the cushioning material, damage of the engaging body and the engaged body is prevented.

When the crushing rotary is rotated in this state, the engaging surface of the engaging body of the crushing rotary engages with the engaging surface of the engaged body of the extended crushing rotary, and the engaging body and the engaging body are rotated. The rotation of the crushed earth rotary is transmitted to the extended crushed earth rotary by the engagement body, and the extended crushed earth rotary is rotated.

According to a fifth aspect of the present invention, there is provided the folding agricultural working machine according to any one of the first to fourth aspects, wherein the main body of the working machine has a leveling body for leveling mud crushed by the crushing rotary. The extension work machine body has an extension grading body for grading the mud crushed by the extension crushing rotary, and a fitting portion is provided at one of opposed ends of the terrain body and the extension terrain body, and the other is provided at the other end. A fitted portion for fitting the fitting portion is provided, and the facing portions of the terrain body and the extended terrain body are connected by the fitted portion and the fitted portion.

[0021] Then, in a state where the extended crushing rotary is arranged at the end of the crushing rotary, the opposite ends of the terrain body of the working machine main body and the extended terrain body of the extended working machine body are connected to the fitting portion and the fitted portion. And are connected by In addition, at the time of work, the surface of the mud crushed by the soil crushing rotary and the extended soil crushing rotary is leveled by the leveling body of the working machine body and the extended leveling body of the extended working body connected to the leveling body, and A step is prevented from being formed on the surface of the mud at the end facing the extended terrain.

According to a sixth aspect of the present invention, there is provided the folding agricultural working machine according to any one of the first to fifth aspects, wherein one of the opposing ends of the soil crushing rotary and the extended soil crushing rotary is opened toward the other. An accommodation recess is formed, and the engagement body and the engaged body engaged with the engagement body are accommodated in the accommodation recess.

By accommodating the engaging body and the engaged body engaged with the engaging body in the accommodating recess, the opposing ends of the crushed earth rotary and the extended crushed earth rotary can be connected in close proximity to each other, and the crushed earth rotary is provided. Between the opposing ends of the and the extended crushed earth rotary can be prevented from being crushed, and the remaining tillage can be prevented from being generated therebetween.

According to a seventh aspect of the present invention, there is provided the folding agricultural working machine according to any one of the first to sixth aspects, wherein the terrain body comprises: a first terrain body; A second terrain body rotatably supported on the first terrain body, and the extended terrain body is rotatably supported on the first extended terrain body in a vertical direction. A second extended terrain, an end facing the first extended terrain and the first extended terrain, the second extended terrain, and the second extended terrain;
The ends facing the extended terrain body are connected to each other by a fitting portion and a fitted portion.

The opposite end of the first terrain and the first extended terrain and the opposite end of the second terrain and the second extended terrain are fitted to the fitting portion. And are connected to each other. Further, at the time of work, the surface of the mud crushed by the crushing rotary and the extended crushing rotary is adjusted by the first grading body and the first extended terrain, and the second grading body and the second extended terrain. A step is prevented from being formed on the surface of the mud at the opposing ends of the second leveling body and the second extended leveling body.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the accompanying drawings.

1 to 3, reference numeral 1 denotes a folding agricultural working machine.
A crushing earth rotary 3 rotatably provided on the work machine main body 2, an extension work body 4 provided on both ends of the work machine main body 2 so as to be foldable, and a rotation provided on the extension work body 4 respectively. And an extended crushing rotary 5 for extending the working width of the crushing rotary 3.

The working machine body 2 includes a main frame 6, side end plates 7 fixed to both ends of the main frame 6, and a transmission case 9 fixed to the main frame 6. It has lower arms 10 and 11 provided on both sides of the main frame 6, a mission device 12 provided on the main frame 6, and a top arm 13 provided on the mission device 12.

The main frame 6 is formed of a pipe whose longitudinal direction is the left-right direction with respect to the traveling direction of the folding agricultural machine 1. Further, the opposite side end plate 7
Each have a bearing 8 fixed to the lower end. The transmission case 9 is fixed to the main frame 6 at a position closer to one side from the center of the main frame 6, and has a bearing 17 at a lower end. The bearing 17 of this transmission case 9
Are located coaxially opposite the bearings 8 of the opposed side end plates 7.

The lower arm 10 on one side is fixed to the upper part of the transmission case 9 so as to protrude in the traveling direction of the folding agricultural machine 1. The lower arm 11 on the other side is fixed to the main frame 6 at a position closer to the other side than the center of the main frame 6.
The lower arm 11 on the other side is provided with the folding agricultural working machine 1.
Projecting in the traveling direction of the lower arm 10.

Further, the transmission device 12 is fixed between the lower arm 11 on the other side and the transmission case 9. Further, the top arm 13 is fixed to an upper portion of the mission device 12 so as to protrude upward in the traveling direction of the folding agricultural machine 1. The distal ends of the lower arms 10, 11 and the top arm 13 on both sides are connected to a three-point suspension mechanism of a tractor (not shown).

The transmission device 12 includes an input shaft 14 protruding in the traveling direction of the folding agricultural machine 1.
And a bevel gear mechanism 15 interlocked with the rotation of the input shaft 14, and an output shaft rotated by the bevel gear mechanism 15.
16 and has. The end of the output shaft 16 is rotatably projected into the upper part of the transmission case 9.

The input shaft 14 is rotated by an output from a PTO shaft of a tractor (not shown).
, The output shaft 16 is rotated via the bevel gear mechanism 15, and the crushed soil rotary 3 is rotated by the output shaft 16.

Next, the crushed soil rotary 3 is provided with a rotary shaft 18, a crushed clay claw 20 protruding from the peripheral surface of the rotary shaft 18, and a rotating direction of the crushed soil rotary 3 provided at both ends of the rotary shaft 18. And an engagement body 25 having an engagement surface 24 formed on the side.

The rotary shaft 18 is rotatably supported at both ends in the vicinity of both ends by bearings 8 at the lower ends of the opposed side end plates 7, and at one side from an intermediate portion of the rotary shaft 18. The middle part located nearer is rotatably supported by a bearing 17 at the lower end of the transmission case 9.

The crushing claw 20 is provided on the rotary shaft.
At a predetermined interval in the axial direction of 18, the projections are detachably protruded from the claw holders 19 fixed respectively.

[0038] Of the respective clay-crushing claws 20, each of the clay-crushing claws 20 located at both ends of the bearing 17 fixed to the lower end of the transmission case 9 is a bearing fixed to the lower end of the transmission case 9.
The soil is crushed below the rotary shaft 18, and each crushing claw 20 located at both ends of the rotary shaft 18 crushes below the bearing 8 fixed to the lower end of the opposed side end plate 7.

A sprocket 21 is fixed to an output shaft 16 protruding into the upper part of the transmission case 9, and the rotary shaft 18 is supported by a bearing 17 at the lower end of the transmission case 9.
A sprocket 22 is fixed to the output shaft 16, and an endless chain 23 is wound around the sprocket 21 of the output shaft 16 and the sprocket 22 of the rotary shaft 18.

When the output shaft 16 is rotated by the input shaft 14 via the bevel gear mechanism 15, the output shaft 16 is driven by the interlocking medium (sprockets 21, 22 and the endless chain 23). The crushing rotary 3 is rotated.

Further, as shown in FIGS. 1, 4 and 5, the engaging members 25 provided at both ends of the rotary shaft 18 are disc-shaped connecting plates fixed to both ends of the rotary shaft 18. The engagement bodies 25 are provided on the outer surfaces of the two connection boards 26 in a substantially radial manner with the rotary shaft 18 as a center. The two connection boards 26 are fitted at the center with fitting holes 27 in which both ends of the rotary shaft 18 are fitted and fixed, respectively.
have.

The engaging body 25 has a main body member 28 having a predetermined thickness and having a longitudinal direction in the radial direction of the connecting board 26, and a base end side of the main body member 28 is formed on an outer surface of the connecting board 26. The main body member 28 is detachably fixed to the
The engaging surfaces 24 are respectively formed on both sides in the width direction of.

The engaging body 25 protrudes from the outer peripheral surface 26a of the connecting plate 26 at the tip of the main body member 28, and is an opposite end of the soil crushing rotary 3 and the extended soil crushing rotary 5 of the extension working machine body 4. Cultivated soil claw 30 to crush soil during tillage
have.

The engaging bodies 25 are formed on both sides in the width direction of the main body member 28 so as to be able to cope with the rotation of the crushed soil rotary 3 in the down cut direction or the up cut direction. The remaining crushed soil claw 30 has a toe 32 having a mountain-shaped guide surface 31 which is formed at a tip end thereof and is inclined toward the engaging surfaces 24 on both sides in the width direction of the main body member 28.

Next, as shown in FIG. 1 to FIG. 3, of the opposing side end plates 7 of the working machine main body 2, a portion between the one side end plate 7 and one surface side of the transmission case 9 is provided. A fixed cover body 33 for covering the upper part of the crushed soil rotary 3 is fixed between the other side end plate 7 and the other surface of the transmission case 9.

The fixed cover body 33 is formed in a protruding arc shape that protrudes upward corresponding to the rotation locus of the crushed soil rotary 3, and has a rear end portion of the fixed cover body 33 behind the crushed earth rotary 3. An elastic plate 34, such as a rubber plate, disposed to face upward is fixed. The fixed cover body 33 prevents the mud discharged from the crushed soil rotary 3 from being scattered, and guides the mud by an elastic plate 34 rearward and downward with respect to the traveling direction of the folding agricultural machine 1. It is supposed to.

As shown in FIGS. 2, 6 and 7, the working machine body 2 has a ground leveling body 35 for leveling mud crushed by the crushing rotary 3. As shown in FIG.

The terrain body 35 includes a first terrain body 36 fixed to the rear end of the elastic plate 34 and a bolt / nut 37 serving as a support shaft at the rear end of the first terrain body 36. And a second ground adjustment body 38 which is rotatably supported in a vertical direction. The first leveling body 36 is formed of a flat plate, and the second leveling body 38 is formed of a rake.

Further, both side portions of the first leveling body 36 are supported by a support mechanism 39 supported on both side portions of the fixed cover body 33 so as to be vertically adjustable. Further, the middle part of the second terrain body 38 is supported by a vertical adjustment mechanism 40 supported by the middle part of the main frame 6 so that the vertical position can be adjusted.

Then, the vertical adjusting mechanism 40 rotates the second grounding body 38 around the bolt of the bolt / nut 37.
Is rotated in the vertical direction, and the second grading body 38 is arranged in a substantially horizontal state, and is adjusted and set to a grading operation state in which the mud is leveled and a burring operation state in which the mud is rotated downward to move the mud. It has become.

Next, fitting portions 41 are provided at both ends of the above-mentioned terrain body 35 so as to be fitted to fitted portions at ends of an extended terrain body, which will be described later, where both ends of the terrain body 35 face each other. .

As shown in FIG. 2, FIG. 6, and FIG. 7, the fitting portions 41 are respectively directed to the front sides of the side end plates 42 fixed to both ends of the first terrain body 36, respectively. The first projecting
A second fitting portion 44, which is located on the axis of the bolt of the bolt / nut 37 and protrudes toward the rear of the side end plate 42 toward the side, respectively; A third fitting portion 46 is provided on each of the side end plates 45 fixed to both ends of the second terrain body 38 so as to project toward the side.

The first fitting portion 43 is formed of a columnar member 47 fixed along the outer side surface of the side end plate 42. The second fitting portion 44 It is formed by a cylindrical member 49 having a fitting hole 48 opened on the outer side surface, and further,
The third fitting portion 46 is formed by upper and lower engaging plates 51 having a fitting concave portion 50 opened on the outer surface. Further, the upper and lower engaging plates 51 have guide plate portions 52 at the outer surface side end portions, respectively, which expand and incline toward opposite directions, and the upper and lower guide plate portions 52 The fitting opening is formed so as to expand.

Next, as shown in FIGS. 1 to 4, the extended working machine bodies 4 are provided at both ends of the working machine body 2 by working machine folding means 53 so as to be foldable.

The work machine folding means 53 includes a link mechanism 54 that supports the extension work body 4 at both ends of the work machine main body 2 so as to be foldable.
The extended working machine body 4 is folded over the working machine main body 2 through the working machine body and moved to both ends of the soil crushing rotary 3 of the working machine body 2 and the working width of the crushed soil rotary 3 is And a cylinder device 55 for rotating the cylinder in an extended state.

The link mechanism 54 includes a pair of body-side fixed links 56 fixed to both ends of the main frame 6.
And a pair of extension side fixed links 57 opposed to the pair of main body side fixed links 56 and fixed to the ends of the extension working machine body 4.
A connecting pin 58 that rotatably connects the distal ends of the pair of main body-side fixed links 56 and the distal ends of the pair of extended-side fixed links 57; and a rotatable base end with a support shaft 59. And one end is supported by the pair of body-side fixed links 56, and the other end is supported by the pair of extension-side fixed links 57.
It has a pair of movable links 61 pivotally supported at 60.

The pair of body-side fixed links 56 and the pair of extension-side fixed links 57 are formed in substantially the same shape and in a substantially triangular shape, and their distal ends are formed at the working machine main body 2 and the extension working machine body 4. And are rotatably connected to each other by the connecting pins 58 in a state of being overlapped with each other.

One of the pair of movable links 61, which is pivotally supported by the pair of body-side fixed links 56, is formed in a substantially rectangular shape. The other supported movable link 61 is formed in an elongated shape.

The cylinder device 55 has a cylinder main body 62 and a cylinder rod 63 provided to be able to move forward and backward with respect to the cylinder main body 62.
A base end of 62 is rotatably supported on the main frame 6 by a support shaft 64, and a distal end of the cylinder rod 63 is rotated by a support shaft 59 on a base end of the pair of movable links 61. It is freely supported. The cylinder device 55 is formed by a hydraulic cylinder device.

Next, as shown in FIGS. 1 and 2, the extension working machine body 4 is located on the extension of the main frame 6 of the working machine body 2 in a state where it is located at both ends of the working machine body 2. And a side end plate 66 fixed to both ends of the extended main frame 65.

The extension main frame 65 is formed of a pipe having a longitudinal direction in the left-right direction with respect to the traveling direction of the folding agricultural machine 1. In addition, bearings 67 are fixed to the opposing side end plates 66 at lower ends thereof on an extension of the rotary shaft 18 of the crushed soil rotary 3.

Next, the extended earth shaking rotary 5 includes an extended rotary shaft 68, an earth shaving claw 70 protruding from the peripheral surface of the extended rotary shaft 68, and the earth shaking rotary provided at an end of the extended rotary shaft 68. 3 has an engaged body 72 which forms an engaged surface 71 with which the engaging surface 24 of the engaging body 25 engages.

The extended rotary shaft 68 is rotatably supported at both ends by bearings 67 of the opposed side end plates 66. The extended rotary shaft 68 is positioned on the extension of the rotary shaft 18 of the crushed clay rotary 3 in a state where it is located at both ends of the crushed clay rotary 3.

The crushed clay claws 70 are removably fixed to a claw holder 69 which is integrally provided on the peripheral surface of the extended rotary shaft 68 with an axial interval therebetween. Then, of the respective clay breaking claws 70, each of the clay breaking claws 70 located at both ends of the extended rotary shaft 68 breaks the soil below the bearing 67 fixed to the opposed side end plate 66. I have.

Further, the engaged body 72 on which the engaged surface 71 is formed is connected to the engaging surface 24 of the crushed earth rotary 3 shown in FIG.
Are formed of the same parts as the engaging body 25 forming the engaging surface 25, and are fixed to a disc-shaped connected board 73 similarly to the engaging body 25 forming the engaging surface 24. The rotary shaft 68 is fixed to one end. Further, the engaged body
Reference numeral 72 denotes a protruding surface of the connected board 73 of the connected board 73 fixed to the end of the extended rotary shaft 68, the face being opposed to the connecting board 26. I have. The remaining crushed soil claw 72a has a guided surface 72b having the same configuration as that of the remaining cultivated soil claw 30.

An engaged body having the engaged surface 71 formed thereon
72 is a connecting plate 26 of the rotary shaft 18 on the connected plate 73
And the same number of them are fixed at the same intervals as the engagement bodies 25 having the engagement surfaces 24 fixed to the same. Then, the rotation of the crushed soil rotary 3 causes the engagement surface 24 of each engagement body 25 to become the engagement surface of each engagement body 72.
71 are respectively engaged.

The working width of the crushing rotary 3 is extended by the extended crushing rotary 5 in a state where the extended crushing rotary 5 is positioned at both ends of the crushing rotary 3. The engaging surface 24 of the engaging body 25 is used as the engaged body 72 of the
The extended crushing rotary 5 is rotated by the rotation of the crushing rotary 3.

Further, as shown in FIGS. 1 and 2, a fixed cover body 74 for covering the upper part of the extended crushing rotary 5 is fixed between the opposite side end plates 66 of the extended working machine body 4. The fixed cover body 74 is formed in a protruding arc shape that protrudes upward corresponding to the rotation trajectory of the extended crushed soil rotary 5, and a rear end portion of the fixed cover body 74 is located above and behind the extended crushed soil rotary 5. An elastic plate 75, such as a rubber plate, disposed in a state opposed to the elastic member 75 is fixed.

With the extended crushing rotary 5 positioned at both ends of the crushing rotary 3, the fixed cover bodies 74 are positioned at both ends of the fixed cover body 33, and the working width of the fixed cover body 33 is adjusted. And the elastic plates 75 are located at both ends of the elastic plate 34 to extend the working width of the elastic plate 34.

The fixed cover 74 prevents the mud discharged from the extended crushed soil rotary 5 from being scattered, and the mud is slid by the elastic plate 75 rearward and downward with respect to the traveling direction of the agricultural working machine 1. You will be guided toward.

Next, as shown in FIGS. 2, 6 and 7, the extension working machine body 4 has an extension grading body 76 for grading mud crushed by the extension crushing rotary 5.

The extended terrain body 76 has a first extended terrain body 77 fixed to the rear end of the elastic plate 75, and a vertical shaft 78 attached to the rear end of the first extended terrain body 77. And a second extended terrain body 79 rotatably supported in the direction. And
The first extended terrain body 77 is formed of a flat plate, and the second extended terrain body 79 is formed of a rake.

One side of the first extended terrain body 77 is supported by a support mechanism 80 supported on one side of the fixed cover body 74 so that the vertical position can be adjusted. In addition, the second
The intermediate portion of the extended terrain body 79 is supported by a vertical adjusting mechanism 81 supported by the intermediate portion of the extended main frame 65 so that the vertical position can be adjusted.

In a state where the extended crushing rotary 5 is located at both ends of the crushing rotary 3, the first extended terrain body 77 is located at both ends of the first terrain body 36 and the first And the second extended terrain body 79 is positioned at both ends of the second terrain body 38 so as to extend the working width of the second terrain body 38. ing.

Then, the support shaft is moved by the vertical adjustment mechanism 81.
The second extended terrain body 79 is rotated in the vertical direction around the center 78, and the second extended terrain body 79 is disposed in a substantially horizontal state and is rotated downward and in a terrain work state for leveling mud. It is set so that it can be adjusted to the state of burling work that moves mud.

Next, the terrain body 35 of the extended terrain body 76
A fitted portion 82 is provided at an end portion opposite to the both end portions to fit the fitting portions 41 provided at both end portions of the terrain body 35.

As shown in FIGS. 2, 6, and 7, the fitted portion 82 is attached to a side end plate 83 fixed to an end of the first extended terrain body 77 by the first fitting. A first fitted portion 84 projecting toward the portion 43 and fitting the first fitting portion 43; and a first fitted portion 84 projecting toward the second fitting portion 44 on the support shaft 78. A second fitted portion 85 to which the second fitting portion 44 is fitted;
The third fixed part 46 is fixed to the end of the extended terrain body 79, and is protruded toward the third fitting part 46 to fit the third fitting part 46.
And the fitted portion 86 of the above.

The first fitted portion 84 is formed by a U-shaped member 87 opened on the inner side surface of the first fitting portion 43 in which the columnar member 47 is fitted. The second fitted portion 85 is formed by a fitting pin 88 fitted into the fitting hole 48 of the second fitting portion 44. Further, the third
The fitted portion 86 is formed by a rectangular fitting member 89, and the third fitted portion 86 is formed by the engaging plates 51 located above and below the third fitting portion 46. The fitting recess 50 is fitted into the fitting recess 50.

Next, the operation of the above embodiment will be described.

FIG. 2 shows a state in which the extension work machine 4 is folded on the work machine main body 2 to reduce the width of the agricultural work machine 1, and is not in operation when traveling on a road or moving in a field.

In order to arrange both or one of the extension working bodies 4 at both ends or one end of the working machine body 2 from the state shown in FIG. When the cylinder rod 63 is advanced, the support shafts 59 of the pair of movable links 61 are pushed at the distal ends of the cylinder rod 63, and the pair of movable links 61 are rotated about the respective support shafts 60. At the same time, the extension working machine body 4 is pivoted downward from the working machine body 2 toward both ends or one end of the working machine body 2 around the connecting pin 58.

When the extension working machine 4 is pivoted downward toward both ends of the working machine main body 2, the cylinder devices 55 of the both working machines 4 are simultaneously operated to simultaneously operate the extension working machine 4. Are simultaneously pivoted downward toward both ends of the work implement body 2.

When the extension working machine body 4 is arranged at the end of the working machine main body 2, the extension crushing rotary 5 of the extension working machine body 4 is arranged at the end of the crushing rotary 3 of the working machine body 2. The engaging body 25 of the connecting board 26 fixed to the end of the rotary shaft 18 of the crushed earth rotary 3 and the engaged body 72 of the connected board 73 fixed to the end of the extended rotary shaft 68 of the extended crushing rotary 5 are substantially flush. In this state, the working width of the clay crushing rotary 3 is extended by the extended clay crushing rotary 5. Further, the connecting plate 26 to which the engaging body 25 is fixed and the engaged body 72
Is fixed coaxially to each other via the engaging body 25 and the engaged body 72.

When the engaging body 25 and the engaged body 72 are located on substantially the same plane, as shown in FIG.
The toe of the remaining crushed soil claw 72a provided on the engaged body 72 on the guide surface 31 on one side or the other side of the toe 32 of the remaining crushed soil claw 30 provided on 25
9 (a) and 9 (b), the guided surface 72b of the engaged body 72 along the guide surface 31 of the engaged body 25 is in contact with the guided surface 72b of the engaged body 72, as shown in FIGS. Is guided, the connected board 73 to which the engaged body 72 is fixed is rotated.

That is, since both ends of the extended rotary shaft 68 to which the connected board 73 is fixed are rotatably mounted on the bearings 67 of the side end plates 66, the guided surface 72b is guided along the guide surface 31.
When the guided surface 72b is pushed by the guide surface 31 while being guided, the connected board 73 to which the engaged body 72 having the guided surface 72b is fixed is rotated.

The guide surface 31 and the guided surface 72b
The engaged body 72 is moved toward the connecting plate 26 to which the engaging body 25 is fixed.
Are guided, and as shown in FIG.
And the engaged body 72 of the coupled board 73 are positioned on substantially the same plane.

When the extension work body 4 is arranged at the end of the work machine main body 2 and the extension soil crushing rotary 5 of the extension work body 4 is arranged at the end of the soil crushing rotary 3 of the work machine main body 2, Opposite ends of the terrain body 35 of the machine body 2 and the extended terrain body 76 of the extension work body 4 are securely connected by the fitting of the fitting portion 41 and the fitted portion 82.

That is, the first fitting portion 43 provided on the first ground preparation body 36 and the first fitted portion provided on the first extended
84 is fitted, and the second fitted portion 85 provided on the first extended ground preparation 77 is fitted to the second fitting portion 44 provided on the first ground preparation 36.
Are fitted, and the third fitted portion 86 provided on the second extended terrain body 79 is fitted to the third fitted portion 46 provided on the second ground grading body 38.
Are fitted.

The first to third fitting portions 43, 4
The facing ends of the grounding body 35 of the working machine body 2 and the extended grounding body 76 of the extended working machine body 4 are substantially the same by fitting the fourth and 46 with the first to third fitted portions 84, 85 and 86. And the working width of the terrain body 35 is continuously extended by the extended terrain body 76.

Next, the left and right lower arms 10, 11 and the top arm 13 of the working machine main body 2 are connected to the three-point suspension mechanism of the tractor, respectively, and provided on the working machine main body 2 via a power transmission shaft to the PTO shaft of the tractor. Mission device 12 input shaft 14
Concatenate.

Then, the farm work machine 1 is folded by the tractor.
When the input shaft 14 is rotated via the power transmission shaft by the output from the PTO shaft of the tractor, the output shaft 16 is rotated by the input shaft 14 via the bevel gear mechanism 15, and the output shaft 16 Interlocking medium (sprocket in transmission case 9)
The crushing rotary 3 of the work machine main body 2 is rotationally driven via the endless chains 21 and 22).

When the crushing rotary 3 is rotated, the engaging surfaces 24 of the engaging bodies 25 of the connecting plate 26 fixed to both ends of the rotary shaft 18 of the crushing rotary 3 Each engaged body 72 of the coupled board 73 fixed to
, And each of the engaging bodies 25 and each of the engaged bodies 72 causes the rotation of the crushing rotary 3 to rotate the extended crushing rotary 5.

The crushed soil is crushed by the extended predetermined working width by each of the crushing claws 20, 70 of the crushing rotary 3 and the extended crushing rotary 5 having the extended working width of the crushing rotary 3.

Further, when the crushed soil is crushed by the crushed soil claws 20 and 70 of the crushed soil rotary 3 and the extended crushed soil rotary 5, the remaining cultivated soil claw 30 provided on each engagement body 25 and each engaged body 72.
Cultivated soil between opposing ends of the crushed soil rotary 3 and the extended crushed soil rotary 5 is crushed by the remaining cultivated crushed soil claw 72a provided in the Tillage is prevented from occurring.

Further, each of the crushing claws 20 located on both sides of the transmission case 9 provided in the working machine main body 2 causes the transmission case 9 to move.
The cultivated soil below the bearing 17 fixed to the lower end of the soil is crushed.

Therefore, the crushed soil rotary 3 and the extended crushed soil rotary 5 having the extended working width of the crushed soil rotary 3
The crushed soil is continuously crushed with an extended predetermined working width by each of the crushed soil claws 20 and 70 and the remaining cultivated crushed soil claws 30 and 72a.

Further, the soil removal rotary 3, the extended soil removal rotary 5, and the remaining tillage soil claw are formed by the earth removal body 35 of the work implement body 2 and the extension earth removal body 76 of the extension work body 4 connected to the earth removal body 35.
The surface of the mud crushed by the 30, 72a is continuously leveled, and a step is prevented from being formed on the surface of the crushed mud at the opposing ends of the leveling body 35 and the extended leveling body 76.

Next, when the cylinder device 55 is operated to retract the cylinder rod 63, the cylinder rod
The support shafts 59 of the pair of movable links 61 are pulled at the distal ends of the links 63, and the pair of movable links 61 are rotated about the respective support shafts 60, and the extension working machine 4 is rotated about the connection pins 58. Is folded and turned toward the work machine main body 2.

When the extension working machine 4 is folded toward the working machine main body 2, the engaged surfaces 71 of the respective engaged bodies 72 of the extended crushed soil rotary 5 provided on the extension working machine main body 2 are moved. From the engaging surface 24 of each engaging body 25 of the crushed earth rotary 3 provided in the above. Also, each of the fitted portions 82 of the extended terrain body 76 provided on the extension work body 4
It comes off from each fitting part 41 of 35.

Further, when the extension working machine 4 is folded so as to be superimposed on the working machine main body 2, the entire width of the agricultural working machine is smaller than the working width extended by the extension working machine 4 by the length of the extension working machine 4. Only be reduced.

When the soil crushing rotary 3 of the working machine main body 2 is rotated in a state where the extension working body 4 at both ends of the working machine main body 2 is folded on the working machine main body 2, the crushing rotary The cultivated soil is crushed by each of the crushed soil claws 20 of 3.

The work machine main body 2 is placed on the work machine main body 2.
When the crushing rotary 3 of the work machine main body 2 is rotated in a state where the extension work body 4 at one end of the work machine body is folded, the extension arranged at the other end of the work machine main body 2 by the rotation of the crushing soil rotary 3 The extended crushing rotary 5 of the working machine body 4 is rotated. Then, the crushed soil is crushed with a predetermined working width by each of the crushing claws 20 of the crushing rotary 3 and each of the crushing claws 70 of the extended crushing rotary 5.

Therefore, the cultivated soil is crushed with a desired working width by folding the extension working machine body 4 at both ends or one end of the working machine body 2 according to the size of the field area or the like.

Also, when not working, the work machine main body 2
By folding the extension work body 4 at both ends of the work machine main body 2, the entire width of the farm work machine is reduced. Therefore, traveling on a road or moving in a field is facilitated.

Next, in the above-described embodiment, each engaging member 25
Although the configuration in which the remaining crushed soil claws 30 are provided and the remaining cultivated soil claws 72a are provided in each engaged body 72 has been described,
Not only in this embodiment, but in the above embodiment, at least one of each of the engaging bodies 25 and the to-be-engaged bodies 72 removes the remaining till between the opposing ends of the crushed soil rotary 3 and the extended crushed soil rotary 5. It is also possible to adopt a configuration having the remaining crushed soil claws 30 or the remaining crushed soil claws 72a.

Further, the residual crushed soil nail 30 or the residual crushed soil nail may be used.
The configuration 72a is not limited to the configuration having the mountain-shaped toes 32 shown in FIG. 5, but may be, for example, a configuration using the crushed clay claws 20, 70 of the above embodiment.

Next, in the above embodiment, each of the engagement members 25
Although the configuration in which the engagement surface 24 of the engagement member 24 directly engages with the engagement surface 71 of each engagement member 72 has been described, the present invention is not limited to this embodiment. At least one of the engaged member 24 and the engaged surface 71 of each engaged member 72 may have a cushioning material 90.

In this configuration, for example, as shown in FIGS. 11 (a) and 11 (b), the engaging members 25 are
Mounting recesses 91 recessed toward the center in the width direction of 25 are respectively formed, and the cushioning members 90 are fixed to these mounting recesses 91, respectively. It is formed at a position protruding from the position. The cushioning member 90 is formed of an elastic body such as rubber or synthetic rubber. In the drawing, reference numeral 92 denotes an insertion hole through which the bolt 29 is inserted.

With this configuration, when the crushing rotary 3 is rotated, the engaging surface 24 of each engaging body 25 protruding from the surface including the end surface of the rotary shaft 18 of the crushing rotary 3 is extended. Each engaged body 72 protruding from a surface including an end surface of the extended rotary shaft 68 of the crushed soil rotary 5
The shock when engaging with the engaged surface 71 is cushioned by the cushioning material 90. Then, the engagement surface of each engagement body 25 is
Damage to the engaged surface 71 of each engaged body 72 is prevented.

Further, the structure in which the cushioning material 90 is provided on the engaged surface 71 of each of the engaged members 72 is also different from the engagement surface 24 of each of the engaging members 25.
By having a configuration similar to the configuration in which the cushioning material 90 is provided,
The shock is absorbed by the cushioning material 90, and damage to the engagement surface 24 and the engaged surface 71 is prevented.

Next, in the above embodiment, as shown in FIG. 1, each engaging body 25 having an engaging surface 24 formed on the side of the side end plate 7 around which the rotary shaft 18 of the crushed soil rotary 3 is mounted. The engaging surface of each of the engaging bodies 25 protrudes from the side of the side end plate 66 on which the end of the extension rotary shaft 68 of the
Although the configuration in which each engaged body 72 forming the engaged surface 71 with which the engagement 24 engages has been described, the present invention is not limited to this embodiment. A receiving recess 93 is formed at one of the opposite ends to open toward the other. Each engaging member 25 and the engaging surface 24 of the engaging surface 25 of the engaging member 25 are engaged in the receiving recess 93. It is also possible to adopt a configuration in which the combination 72 is accommodated.

In this configuration, for example, as shown in FIG. 12, a side end plate 7 on which both ends of a rotary shaft 18 of a crushed soil rotary 3 are supported is an upper fixed plate fixed to both ends of the main frame 6. A lower support plate portion 95 which is located on the inner side of the transmission case 9 side from the vertical position of the fixed plate portion 94 and has both ends of the rotary shaft 18 mounted thereon; It has a substantially arc-shaped plate portion 96 formed between an upper end portion of the portion 95 and a lower end portion of the fixed plate portion 94 and protruding upward.

The shaft supporting plate portion 95 and the projecting arc-shaped plate portion 96 form the accommodation recess 93 which opens toward the end of the extended soil breaking rotary 5.

The protruding arc-shaped plate portion 96 is provided with the rotation trajectory of each of the engaging members 25 accommodated in the accommodating recess 93, the engaged members 72 with which the engaging surfaces 24 of the engaging members 25 are engaged, and the crushed soil rotary. The protrusions 3 are formed in a protruding arc shape corresponding to the rotation trajectories of the crushed clay claws 20 protruding from the ends.

Each of the engaging members is inserted into the accommodation recess 93 thus configured.
25 and the engaging surface 24 of each engaging body 25 accommodates each engaged body 72 engaged with the engaged surface 71, so that the opposing ends of the crushed earth rotary 3 and the extended crushed earth rotary 5 are brought close to each other. While being connected in a state, the cultivated soil between the opposing ends of the crushing rotary 3 and the extended crushing rotary 5 is crushed by the crushing claw 20 at the end of the crushing rotary 3 that rotates along the protruding arc-shaped plate portion 96, The remaining tillage can be prevented from occurring between them.

[0115] Of the side end plates 66 on which both ends of the extended rotary shaft 68 of the extended crushed soil rotary 5 are supported, the side end plates 66 opposed to the ends of the rotary shaft 18 of the crushed soil rotary 3 are each provided with: A housing recess for accommodating the engaging bodies 25 and the respective engaged bodies 72 in which the engaging surfaces 24 of the respective engaging bodies 25 are engaged with the engaged surfaces 71.
Also in the case of the configuration in which 93 is formed, the side
It is formed in the same manner as the structure in which 93 is formed. Then, the same operation as the configuration in which the accommodation recess 93 is formed in the side end plate 7 can be obtained.

Next, in each of the above embodiments, the connecting board 26
An engaging body 25 having an engaging surface 24 formed thereon is projected radially, and an engaged body 72 having an engaged surface 71 with which the engaging surface 24 of the engaging body 25 is engaged is radially attached to a connected plate 73. In the above-described embodiments, the engaging body 25 having the engaging surface 24 and the engaged surface 71 are not limited to this embodiment. Formed engaged body 72
Can be configured to protrude from the end of the rotary shaft 18 and the end of the extended rotary shaft 68 without using the connecting board 26 and the connected board 73, respectively.

In this configuration, for example, as shown in FIG. 13 (a), the engaging body 97 has a cross-shaped longitudinal shape having a fitting hole 98 in the center portion into which the end of the rotary shaft 18 is fitted and fixed. An engaging surface 100 is formed on the engaging body 97 on the rotation direction side of the crushed soil rotary 3, and the engaging surface 100 is configured to rotate the crushed earth rotary 3 in the up-cut direction and move down. These are formed on both sides in the width direction of the engaging body 97 in preparation for rotation in the cutting direction.

The engaging member 97 is located on the side surface opposite to the engaged member 101 and is
A guide surface 102 for guiding 101 is formed.
Are formed in the shape of a mountain that expands toward the two engagement surfaces 100.

Further, as shown in FIG.
Numeral 1 protrudes from the respective ends of a cross-shaped elongated member 104 having a fitting hole 103 in the center of which the end of the extended rotary shaft 68 is fitted and fixed.

The longitudinal member 104 of each of the engaged members 101
Is the engaged surface 105 with which the engaging surface 100 of the engaging body 97 is engaged.
Each of the engaged members 101 has a substantially pyramid-shaped guided surface which is located on a side surface facing the engaging member 97 and is guided on one surface side of the guide surface 102. Surfaces 106 are each formed.

With such a configuration, when the extended crushing rotary 5 of the extended working machine body 4 is disposed at the end of the crushing rotary 3 of the working machine main body 2, it protrudes from the surface including the end face of the crushing rotary 3. Each engaging body 97 and each engaged body 101 protruding from a surface including the end face of the extended soil breaking rotary 5
The working width of the crushing rotary 3 is extended by the extended crushing rotary 5 in a state where the crushing rotary 3 is positioned substantially on the same plane as that of FIG.

When the crushed soil rotary 3 is rotated in this state, as shown in FIG. 13 (c), the engagement surfaces 100 of the engaging bodies 97 of the crushed soil rotary 3 The extended crushed soil rotary 5 is rotated by the rotation of the crushing rotary 3 by the engagement bodies 97 and the to-be-engaged bodies 101 respectively.

Therefore, the crushing rotary 3 and the extended crushing rotary 5 having an extended working width of the crushing rotary 3
As a result, the cultivated soil is continuously crushed with the extended working width.

Further, in the embodiment shown in FIG.
Each of the engaging members 97 formed by the cross-shaped elongate member 99 shown in FIG. 13A is not limited to the configuration protruding from the surface including the end surface of the rotary shaft 18 of the crushed soil rotary 3, Projecting from the surface including the end surface of the shaft 68,
Each engaged member 101 integrally protruding from the tip of a cross member-shaped longitudinal member 104 shown in FIG. 13B may be made to protrude from a surface including the end surface of the rotary shaft 18 of the crushed soil rotary 3.

In the embodiment shown in FIG. 13, each of the engaging members 97 is formed of a cross-shaped longitudinal member 99, and each of the engaged members 101 is projected from the tip of a cross-shaped longitudinal member 104. With the engagement of each engaging body 97 and each engaged body 101, the rotation of the soil crushing rotary 3 rotates the extended soil crushing rotary 5.

Therefore, not only as a rotating means for connecting the crushing rotary 3 and the extended crushing rotary 5 with the folding harrow for crushing the mud, but also as the crushing rotary 3 and the extended crushing soil with the folding tilling rotary which plows and crushes the cultivated soil. It is suitable as a rotating means for connection with the rotary 5.

Next, in each of the above embodiments, each of the engaging members
Although at least one of the two engagement surfaces 24 of the 25 and the two engagement surfaces 71 of the engaged body 72 has been described as having a cushioning material 90,
Not limited to this embodiment, but in each of the above embodiments,
As shown in FIG. 15, each engaging body 25 protrudes from an outer surface 26 b of a connecting plate 26 fixed to an end of the rotary shaft 18, and the engaged body 72 is fixed to an end of an extended rotary shaft 68. The connecting board 73 is provided with a protruding surface 73a facing the connecting board 26, and the outer surface 26b of the connecting board 26 and the connecting board 26 of the
At least one of the opposing surfaces 73a is the cushioning material 1.
A configuration having 10 is also possible.

This configuration is, for example, shown in FIGS.
As shown in FIG. 6, an annular recess 111 recessed from the outer surface 26b of the disk 26 is formed at the opening edge of the fitting hole 27 formed in the connecting board 26 of the rotary shaft 18, and the cushioning material is formed in the annular recess 111.
An annular mounting plate 112 to which 110 is fixed is fitted, and the mounting plate 112 is mounted on the opening edge of the fitting hole 27 with a plurality of screws 113.

Further, the cushioning member 110 is provided on the rotary shaft 18.
The outer surface of this connecting board 26 in a state where it is attached to the connecting board 26
The cushioning member 110 protrudes from 26b, and is formed of a plurality of divided cushioning members 114 formed in an arc shape. The plurality of divided buffer members 114 are fixed to the annular mounting plate 112 in an annular shape with their opposing ends separated along the mounting plate 112, and the plurality of divided buffer members 114 are separated from each other. Screw operating portions 115 for inserting the plurality of screws 113 are formed at opposite ends.

In the plurality of divided cushioning members 114, an abutting surface 116 is formed in an annular shape on the opposite side to the mounting plate 112, with which the inner surface 73a of the connected plate 73 of the extended rotary shaft 68 abuts. As shown in FIG. 14, the contact surface 116 projects in the axial direction from the outer surface 25a of each of the engagement members 25.

The plurality of divided cushioning members 114 are formed of an elastic body such as rubber, synthetic rubber or the like.

With this configuration, when the extended work unit 4 is arranged at the end of the work machine body 2 with the connected plate 73 of the extended rotary shaft 68 facing the connection plate 26 of the rotary shaft 18, The cushioning material 110 is compressed, and the outer surface 25a of each engagement body 25 of the connection board 26 is provided on the face 7 of the connected board 73 facing the connection board 26.
3a comes into contact, and the outer surface 26b of the connecting board 26 facing the connected board 73 comes into contact with each engaged body 72 of the connected board 73.

[0133] By the compression of the cushioning material 110, the connected board 73 is connected to the outer surface 25a of each engaging body 25 of the connecting board 26, and the outer surface 26b of the connecting board 26 is connected to each engaged body 72 of the connected board 73. The impact of each contact is buffered by the cushioning material 110, and the connecting board 2
The damage of each of the engagement members 25 of FIG. 6 and each of the engagement members 72 of the connected board 73 is prevented.

When the crushed soil rotary 3 is rotated in this state, the engagement surfaces 24 of the respective engaging members 25 of the crushed soil rotary 3 become engaged surfaces of the respective engaged members 72 of the extended crushed soil rotary 5.
71, and each engagement body 25 and each engaged body 72
The rotation of the crushing rotary 3 causes the extension crushing rotary 5 to rotate.

Next, in the embodiment shown in FIGS. 14 to 16, the cushioning material 110 is connected to the connecting plate 2 of the rotary shaft 18.
Although the configuration protruding from the outer surface 26b of the sixth rotary member 6 has been described, the present invention is not limited to this configuration, and the buffer 110 may also be configured to protrude from the inner surface 73a of the connected plate 73 of the extended rotary shaft 68.

With this structure, the cushioning member 110 is compressed to connect the connected plate 73 to each engagement body 25 in the same manner as the structure in which the cushioning member 110 protrudes from the connecting plate 26 of the rotary shaft 18.
However, the shock when the connecting board 26 comes into contact with each of the engaged bodies 72 is buffered, and the damage of each of the engaging bodies 25 and each of the engaged bodies 72 is prevented.

Therefore, the cushioning material 110 is provided on the rotary shaft 1.
Any configuration may be used as long as it is provided on at least one of the opposing surfaces of the connecting board 26 of FIG. 8 and the connected board 68 of the extended rotary shaft 68.

[0138] In the present specification, the crushing by the crushing rotary 3 and the extended crushing rotary 5 means crushing the mud with the harrow and crushing the cultivation with the tilling rotary.

According to the present embodiment, the engagement surface is
The engaging bodies 25 forming the projections 24 are radially projected, and
An engaged body having an engaged surface 71 with which the 25 engaging surfaces 24 engage.
Since the projections 72 are radially protruded from the connected plate 73 and are formed of the same component, they can be used as common engagement means, and can be engaged with the engagement body 25 having the engagement surface 24. One of the engaged body 72 having the mating surface 71 can be protruded from the end of the rotary shaft 18 of the crushed earth rotary 3 and the other can be protruded from the end of the extended rotary shaft 68 of the extended crushed earth rotary 5. The structure of the engaging means is simple, the manufacturability can be improved, the assembling workability can be improved, and the cost can be reduced as a whole.

Further, according to the present embodiment, the widthwise both engagement surfaces 24 of each engagement body 25 provided at the end of the rotary shaft 18 are provided.
Alternatively, the cushioning material 90 is provided on each of the engaging surfaces 71 in the width direction of each of the engaged members 72 provided at the end of the extended rotary shaft 68, so that the crushed soil rotary 3 is rotated in the down-cut direction or the up-cut direction. Even if the crushed soil rotary 3 is rotated in the down-cut direction or the up-cut direction, the cushioning material 90 of each engaging surface 24 or the rotation of the crushed With the cushioning material 90 of each engaged surface 72 located on the opposite side to the direction, damage to each engaging surface 24 and each engaged surface 72 can be prevented.

The first fitting portion 43 provided on the first ground leveling body 36 is fitted with the first fitted portion 84 provided on the first extended ground leveling body 77. The second fitting portion 44 provided on the terrain body 36
The second fitted portion 85 provided on the first extended terrain body 77 is fitted to the second extended terrain body 77, and the second extended terrain body 79 is further fitted to the third fitted portion 46 provided on the second extended terrain body 38. The third mated portion 86 provided in the first and second extended terrain bodies 36 and 77 and the second extended terrain body 38 and the second extended terrain The opposite ends of the body 79 can be reliably connected on substantially the same plane.

Further, a third grounding member 38 provided at an end of the second
The first fitting portion 84 provided on the first extended terrain body 77 and the first fitting portion 84 are formed in a substantially U-shape having an opening on the fitting side. Even if mud enters the first fitted portion 84, the mud can be easily removed.

Furthermore, since the fitting pin 88 of the second fitted portion 85 is fitted into the fitting hole 48 of the second fitting portion 44, the first ground leveling body 36 and the first extended leveling The facing end of the body 77 does not shift in the vertical direction, and the facing end of the second terrain body 38 and the second extended terrain body 79 does not shift in the front-rear direction.
These can be reliably maintained in a connected state.

Therefore, the first to third fitting portions 43, 44,
The grounding body 35 of the working machine body 2 and the extension grounding body 76 of the extended working body 4 are fitted by fitting the first and third fitted parts 84, 85, 86 to the grounding body 46.
Can be reliably held in a state where the opposite ends are connected to substantially the same plane, and the ground can be continuously leveled with an extended working width.

[0145]

According to the first aspect of the present invention, in the state where the extended crushing rotary is arranged at the end of the crushing rotary and the working width of the crushing rotary is extended, the extended crushing rotary is reliably rotated by the rotation of the crushing rotary. In addition, the configuration in which the extended soil crushing rotary is rotated by the rotation of the soil crushing rotary is simple, and the manufacturing cost can be reduced.

According to the second aspect of the present invention, the soil can be crushed between the opposing ends of the crushing rotary and the extended crushing rotary with the remaining cultivation crushing claw, and between the opposing ends of the crushing rotary and the extended crushing rotary. The occurrence of residual tillage can be prevented.

According to the third aspect of the present invention, the shock when the engaging surface of the engaging body of the earth-crushing rotary engages with the engaging surface of the engaged body of the extended earth-crushing rotary can be buffered by the cushioning material, and the noise can be reduced. Can be prevented, and the shock between the engaging surface of the engaging body and the engaged surface of the engaged body can be buffered by the cushioning material, even if the extended soil breaking rotary runs idle during the non-rotational drive of the extended soil breaking rotary. Damage between the engagement surface of the united body and the engaged surface of the engaged body can be reliably prevented.

According to the fourth aspect of the present invention, the shock when the connecting plate of the extended rotary shaft is closely approached to the connecting plate of the rotary shaft can be buffered by the buffer material, and the generation of noise can be prevented. At the time of non-rotational drive of the extended crushed soil rotary, the extended crushed soil rotary can be prevented from idling by the cushioning material that cushions the impact, and damage to the engaged body and the engaged body can be reliably prevented.

According to the fifth aspect of the present invention, the facing end of the earth grading body of the working machine body and the extended earth grading body of the extension working machine body are fitted to each other with the extended earth crushing rotary positioned at the end of the earth crushing rotary. And the mated part can be securely connected, and
At the time of work, the terrain body of the work machine body and the extended terrain body of the extended work body can be integrated to reliably level the surface of the mud crushed by the crushing rotary and the extended crushing rotary. A step can be prevented from being formed on the surface of the mud at the end opposite to the above.

According to the sixth aspect of the present invention, the engaging body and the engaged body engaged with the engaging body are accommodated in the accommodating recess, so that the opposing ends of the crushed earth rotary and the extended crushed earth rotary are brought close to each other. Can be connected, and it is possible to prevent a residual tillage from being generated between opposing ends of the crushed earth rotary and the extended crushed earth rotary.

According to the seventh aspect of the present invention, the opposing ends of the first terrain and the first extended terrain and the opposing ends of the second terrain and the second extended terrain are The fitting portion and the fitted portion can be reliably connected to each other, and during operation, the first terrain body and the first extended terrain body and the second terrain body and the second extended terrain body are integrally formed. The surface of the mud crushed by the crushing rotary and the extended crushing rotary can be surely leveled,
A step can be prevented from being formed on the surface of the mud at the opposing ends of the second leveling body and the second extended leveling body.

[Brief description of the drawings]

FIG. 1 is a rear view of a folded agricultural work machine according to an embodiment of the present invention, in which a ground work body and an extension work body are omitted and one extension work body is folded.

FIG. 2 is a rear view of the folded agricultural working machine in a state where extended working bodies on both sides of the working machine main body are folded.

FIG. 3 is a side view of the same.

FIG. 4 is an enlarged side view showing the engaging body and the engaged body.

FIG. 5 is an enlarged perspective view showing an engaging body and an engaged body of the same.

FIG. 6 is an enlarged plan view showing a state before connection of opposing ends of the terrain body and the extended terrain body.

FIG. 7 is an enlarged plan view showing a state after connection of opposing ends of the above-mentioned terrain and extended terrain.

FIG. 8 is an explanatory view showing a state in which the engaged body is engaged with the engaging body.

FIGS. 9A and 9B are explanatory views showing a state in which the remaining cultivated soil claw of the engaging body guides the remaining cultivated soil claw of the engaged body.

FIG. 10 is an explanatory diagram showing an engaged state between the engaging body and the engaged body.

11A is a front view of an engaging body and an engaged body showing another embodiment, and FIG. 11B is a side view of the same.

FIG. 12 is a cross-sectional view showing an engagement portion between a rotary shaft of a crushed earth rotary and an extended rotary shaft of an extended crushed earth rotary according to another embodiment.

FIG. 13A is a perspective view of an engaging body showing another embodiment, FIG. 13B is a perspective view of an engaged body showing another embodiment, and FIG.
It is explanatory drawing which shows the state in which the engaging body engaged with the to-be-engaged body same as the above.

FIG. 14 is a front view of a disk having a cushioning material according to still another embodiment.

FIG. 15 is a perspective view of the disk.

FIG. 16 is an explanatory diagram showing an engaged state of an engaging body of the rotary shaft and an engaged body of the extended rotary shaft.

[Explanation of symbols]

 2 Work machine main body 3 Crushing rotary 4 Extended working machine 5 Extended clay crushing rotary 18 Rotary shaft 20, 70 Crushing claw 26 Connecting board 24, 100 Engagement surface 25, 97 Engaging body 30 Residual crushed clay claw 35 Leveling body 36 First leveling Body 38 Second ground body 41 Fitting part 68 Extended rotary shaft 71, 105 Engaged surface 72, 101 Engaged body 73 Connected board 76 Extended ground body 77 First extended ground body 79 Second extended ground body 82 Fitted part 90, 110 Buffer material 93 Housing recess

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tsutomu Tanizawa 5155 Shiokawa, Oji, Maruko-cho, Nagano Pref. F term in the company (reference) 2B033 AA05 AB01 AB11 AC05 BA01 BA12 BB02 BB09 DA01 DA02 DB01 DB44 2B041 AA02 AA11 AB05 AC03 BA09

Claims (7)

[Claims] A working machine body, a crushing rotary provided rotatably on the working machine body, an extended working machine body foldably provided at an end of the working machine body, and an extended working machine body. Comprising an extended crushing rotary that is rotatably provided and extends the working width of the crushing rotary,
In a folding agricultural work machine that rotates the extended soil breaking rotary by rotating the soil breaking rotary with the working width of the soil breaking rotary extended, the soil breaking rotary includes a rotary shaft, and a clay shaving claw protruding from a peripheral surface of the rotary shaft. And an engaging body provided at an end of the rotary shaft and having an engaging surface formed on the rotation direction side of the crushed earth rotary, wherein the extended crushed earth rotary is an extended rotary shaft and a peripheral surface of the extended rotary shaft. And an engaged body provided at an end of the extended rotary shaft and having an engaged surface with which an engaging surface of the engaging body is engaged by rotation of the clay rotary. Folding agricultural work machine characterized. 2. The method according to claim 1, wherein at least one of the engaging body and the engaged body has a residual crushed soil claw that crushes residual soil between opposing ends of the soil crushing rotary and the extended soil crushing rotary. The folding farm working machine as described. 3. The folding agricultural machine according to claim 1, wherein at least one of the engaging surface of the engaging member and the engaged surface of the engaged member has a cushioning material. 4. An engaging body is protruded from a connecting plate fixed to an end of a rotary shaft, and an engaged body is protruded from a connecting plate fixed to an end of an extended rotary shaft. 4. The folding agricultural working machine according to claim 1, wherein at least one of the opposing surfaces of the united connection board and the connected body of the engaged body has a cushioning material. 5. 5. The working machine body has a grading body for leveling mud crushed by the crushing rotary, and the extended working machine body has an extended grading body for leveling mud crushed by the extended crushing rotary. A fitting portion is provided at one of the opposed ends of the terrain body and the extended terrain body, and a fitted portion that fits the fitting portion is provided at the other end, and the fitting portion and the fitted portion are provided. The folded agricultural working machine according to any one of claims 1 to 4, wherein opposite ends of the terrain body and the extended terrain body are connected to each other. 6. A receiving recess which is open toward the other at one of the opposite ends of the soil crushing rotary and the extended soil crushing rotary, and an engaging body and an engaged body engaged with the engaging body are engaged with the housing recess. The folding agricultural machine according to any one of claims 1 to 5, wherein the folding agricultural machine is accommodated. 7. The terrain body includes a first terrain body and a second terrain body pivotally supported by the first terrain body so as to be vertically rotatable. A first extended terrain body and a second extended terrain body pivotally supported by the first extended terrain body so as to be rotatable in the vertical direction. 2. An end facing the body and an end facing the second ground leveler and the second extended leveler are connected by a fitting part and a fitted part, respectively. 7. The folding agricultural work machine according to any one of items 6 to 6.