JP2501020B2 - Farm work machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an agricultural working machine, and more particularly to an agricultural working machine such as a tilling working machine and a scraping working machine in which a working body such as a rotary working body is configured to be foldable.

[0002]

2. Description of the Related Art Conventionally, as this type of agricultural working machine, for example, a working machine having a rotary working body is rotatably connected to the left and right sides of a machine frame having a mission so as to be rotatable in the front-rear direction. There is a structure in which cylinder devices are connected to each other and the left and right cylinder devices project the respective working machines in the left-right direction or are rotated rearward of the machine frame to be folded. When working, the working width is expanded with the left and right working machines to improve working efficiency, while the left and right working machines are maximally reduced to reduce the width in the left and right direction when not working, resulting in traffic obstacles and hangars. To facilitate storage of the.

Further, as described in Japanese Utility Model Laid-Open No. 61-36841, an inner rotor frame is provided at a rear end portion of the main frame, and left and right ends of the inner rotor frame are supported by supporting shafts at left and right sides. The outer rotor frames are rotatably supported in the vertical direction, and the left and right outer rotor frames are centered around the support shaft between both ends of the bracket provided on the main frame and the left and right outer rotor frames. A configuration is known in which left and right hydraulic cylinders are provided for vertically rotating each of the.

[0004]

In the structure in which the left and right working machines are rotated in the front-rear direction by the left and right cylinder devices, the interlocking structure of the left and right working machines becomes complicated, and the left and right working machines are There is a problem in operability because they are rotated separately.

Further, the structure described in the above publication requires the left and right hydraulic cylinders for vertically rotating the left and right outer rotor frames, and the left and right hydraulic cylinders vertically move the respective outer rotor frames upward. When folded into a shape, the center of gravity of the agricultural working machine is high, the weight balance in the left-right direction is poor, and stability is poor, and there is a risk of falling when driving on the road.

The present invention has been made in view of the above problems, and by horizontally rotating one working machine, the other working machine can be horizontally rotated in the same direction as the one working machine. Since the left and right work machines can be simultaneously rotated, the operability can be greatly improved, and the structure for horizontally rotating the left and right work machines is simple, and the left and right work machines can be folded. However, the weight balance in the left-right direction is not significantly impaired and is stable, and there is no risk of falling when driving on the road, etc., so it is safe to provide a foldable agricultural working machine with excellent operability and safety. It is intended.

[0007]

An agricultural working machine according to claim 1 has a mission in which an input shaft is rotatably projected forward and both end portions of an output shaft are rotatably projected leftward and rightward. and the machine frame, a rotary work to be rotatably driven by the output from the output shaft when the protruding to the left and right portions of the vertical, respectively it in connecting pins of rotating freely linked machine frame on the left and right portions of the machine frame and left <br/> right working machine foldably having a body, times <br/> of pivotally connected between the inner ends of the left and right working machine one of the working machine around the connecting pin in conjunction with the other working machine in an opposite direction to the one of the working machine in motion
Comprising a continuous moving mechanism Ru is rotating, wherein the interlocking mechanism, before
The left and right are fixedly attached to the inner end of the work machine, respectively.
Left and right interlocking pieces that rotate around the right connecting pin
Center the axis connecting the left and right connecting pins to the left and right interlocking pieces
As the left and right interlocking pins protruding forward and backward,
The left side is arranged so as to intersect the axis connecting the left and right connecting pins.
The right interlocking pin has both ends pivotally attached to each other.
And a moving body .

An agricultural working machine according to a second aspect of the present invention includes a machine frame having a mission in which an input shaft is rotatably projected forward and both ends of an output shaft are rotatably projected leftward and rightward, and the machine frame. a rotary working member driven in rotation by an output from the output shaft when the protruding to the left and right portions of the vertical <br/> at connecting pins, respectively it rotating freely linked machine frame on the left and right portions of the frame and the left and right working machine foldably have, right and left of the working machine of the inner end portion between the pivotally connected to the connecting pin in one working machine pivoting of the center and the other of the working machine one of the working machine and anda interlocking mechanism for rotating in conjunction with the opposite direction, the interlocking mechanism includes a pair of spur gears that mutually meshing with sprocket rotatably Jikuka the machine frame, the connecting pin of the right and left Sprocket and An endless chain which is respectively times the line freely suspended between the one and between said other sprocket sprocket and the other spur gear of the connection pin of the sprocket of the connecting pin of the sprocket and the one of the spur gear, Is to have .

An agricultural working machine according to a third aspect of the present invention includes a machine frame having a mission in which the input shaft is rotatably projected forward and both ends of the output shaft are rotatably projected leftward and rightward, and the machine frame. a rotary working member driven in rotation by an output from the output shaft when the protruding to the left and right portions of the vertical <br/> at connecting pins, respectively it rotating freely linked machine frame on the left and right portions of the frame and the left and right working machine foldably have, right and left of the working machine of the inner end portion between the pivotally connected to the connecting pin in one working machine pivoting of the center and the other of the working machine one of the working machine and in conjunction with the opposite direction anda interlocking mechanism for rotating, the interlocking mechanism includes upper and lower wound-up body respectively provided connecting pins of the right and left, coiling the top of the connecting pins of the right and left An upper traction body stretched between the bodies in a rugged manner, and A lower towing body is stretched robe hook shape in a direction intersecting the upper traction member between winding at the bottom of the connecting pins of the right-up body, and has a.

[0010]

In the agricultural working machine according to claim 1, when the left and right working machines are folded from the state in which the left and right working machines are extended to the left and right parts of the machine frame, one of the working machines is connected with the connecting pin. When it is folded and rotated rearward as a center, the interlocking body of the interlocking mechanism is interlocked with the rotation of the one working machine, and the operation of the other body causes the other working machine to move about Like the working machine, it is folded and rotated rearward.

Then, one working machine is rotationally displaced rearward of the machine casing, and at the same time, the other working machine is rotationally displaced rearward of the machine casing. Therefore, the left and right working machines are folded to the rear of the machine frame, the width of action of the agricultural working machine in the left-right direction is greatly shortened, and the working machine is transformed into a state suitable for traveling on the road and storing in the hangar.

When the left and right working machines are extended from the non-working state in which the left and right working machines are extended to the left and right parts of the machine frame, one of the working machines is centered on the connecting pin. When rotating forwardly as, together with the interlocking member of the interlocking mechanism is interlocked with the rotation of the one of the working machine, the other working machine the one working machine around the connecting pin by the operation of the interlocking member It is rotating in Tsu or toward the front in the same manner as.

Then, one working machine is rotationally displaced laterally of the machine casing, and at the same time, the other working machine is rotationally displaced laterally of the machine casing. Therefore, the left and right working machines project to the left and right parts of the machine frame, and the rotary working bodies of the left and right working machines form a large working width in the left and right direction of the agricultural working machine.

Further, the left and right work machines are projected to the left and right parts of the machine frame, and the rotary work bodies of the left and right work machines are interlocked with the output shaft of the mission. When the output shaft is rotationally driven, the rotary work bodies of the left and right work machines are rotationally driven by the output from the output shaft.

[0015] In the agricultural machine of claim 2, wherein, when rotating centered on the connecting pin to one of the working machine, one endless chain, via a pair of spur gears and the other endless chain in mesh with each other the other of the work machine is communicating Dokai dynamic synchronization in the opposite direction to the rotation direction of one of the working machine around the connecting pin. Then, the folded left and right working machine behind the state protruding right and left of the working machine and the machine frame on the left and right portions of the machine frame
Is strange position.

[0016] In agricultural machine according to claim 3, wherein, when rotating centered on the connecting pin to one of the working machine, the upper traction member and the lower traction in the vertical and horizontal of the winding-up body by the rotation direction of the one of the working machine The bodies are wound in opposite directions, and the upper and lower traction bodies cause the other working machine to synchronize in a direction opposite to the rotating direction of the one working machine around the connecting pin. It is dynamically rotated. Then, the displacement of the folded left and right working machine behind the state protruding right and left of the working machine and the machine frame on the left and right portions of the machine frame.

[0017]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIGS. 1 to 3, reference numeral 1 denotes a machine frame, which has a hollow cylindrical main frame 2 extending in the left-right direction, and is opposed to both ends of the main frame 2. The left and right lower arms 3 and 3 projecting forward from the front are inserted and fixed, respectively, and the lower pins 4 and 4 project from the tip ends of the left and right lower arms 3 and 3, respectively.

Further, a mission case body 6 containing a mission 5 is provided at an intermediate portion of the main frame 2, and the transmission case body 6 is provided in front of the mission case body 6 so as to face the mounting pieces 7, 7. Top mast 8 protruding upwards,
8 are fixed to each other, and connecting portions 9, 9 are provided at the tips of the top masts 8, 8, respectively. The middle parts of the top masts 8, 8 and the middle parts of the left and right lower arms 3, 3 are connected by left and right stays 10, 10.

Further, both ends of the main frame 2 are respectively projected to the outer side of the base ends of the left and right lower arms 3, 3 and annular flanges 11, 11 are formed at the left and right projecting ends of the main frame 2.
11 are formed respectively. Also, the mission 5
The input shaft 12 is rotatably projected forward, the output shaft 13 of the mission 5 is rotatably provided in the main frame 2, and both ends of the output shaft 13 are at the main frame 2. Are rotatably projected to the outside of the lower arms 3 and 3 through the bearings in the both ends.

Also, one of the clutch claws 15, 15 of the clutches 14, 14 is fixed to the shaft portion projecting from both ends of the output shaft 13 in the axial direction and slidably in the axial direction. A plurality of clutch concave portions and a plurality of clutch pawls are formed on the outer end portion of the one clutch pawl body 15, 15.

Further, the left and right ends of the main frame 2 are respectively fixed with the tip ends of the left and right connecting arms 16, 16 which horizontally project toward the rear side.
A support frame 17 is fixed between the rear ends of the 16, 16 . Also,
The top and bottom of the outer rear end of the connecting arm 16, 16 of the left and right respectively fixed connecting piece 18, 18 relative, to the coupling piece 18, 18 of the left and right upper and lower than the center portion of the clutch 14, 14 Upward and downward connecting pins 19, 19 are rotatably inserted and supported at the rear position. Then, the left and right connecting pins
As shown in FIG. 1 and FIG.
It is located above.

Next, reference numerals 20 and 20 denote left and right working machines arranged on both left and right sides of the machine frame 1, respectively.
Have horizontal hollow pipe-shaped connecting frames 21 and 21, respectively, and vertical brackets 22 and 22 are fixed to inner ends of the connecting frames 21 and 21, respectively. Further, the upper portions of the chain cases 23, 23 are fixed to the outer ends of the connecting frames 21, 21, respectively.

Drive shafts 24, 24 are rotatably inserted into the left and right connecting frames 21, 21 via bearings (not shown), and inner ends of the drive shafts 24, 24 are The drive shafts 24, 24 are protruded inward from the brackets 22, 22, and the outer ends of the drive shafts 24, 24 are the chain case.
It projects into the upper part of 23,23. Also, the drive shaft 2
The other clutch pawls 25 and 25 of the clutches 14 and 14 are fixed to the projecting shafts at the inner ends of the clutches 4 and 24, respectively, and the one clutch is provided at the inner ends of the other clutch pawls 25 and 25. Nail body
A plurality of clutch recesses and clutch claws that are disengageably engaged with the plurality of clutch recesses and clutch claws 15 and 15 are formed, respectively.

The inside of the brackets 22, 22 is covered with the one and the other clutch pawls 15, 15, 25, 25, and the working machines 20, 20 are arranged on the left and right sides of the machine frame 1. Cylindrical cover bodies 26, 26 also serving as stoppers for positioning the working machines 20, 20 when installed are fixed to the outer end opening edge portions, respectively.

Further, rotary working members 27, 27 are rotatably provided between the lower ends of the brackets 22, 22 and the lower ends of the chain cases 23, 23, respectively. The rotary working bodies 27, 27 have a cultivating shaft rotatably mounted between the lower ends of the brackets 22, 22 and the lower ends of the chain cases 23, 23. A large number of tillers are radially provided on the side. Further, the upper portions of the rotary working bodies 27, 27 are covered with cover bodies 28, 28 fixed between the brackets 22, 22 and the chain cases 23, 23.

The left and right rotary working bodies 27,
27 is rotatably linked to the drive shafts 24, 24 via an interlocking medium including a chain provided in the chain cases 23, 23, and is rotationally driven by the output from the drive shafts 24, 24. It has become. Further, a residual tillage treatment blade 29 is fixed to the inner end portion of the one working machine 20.
Further, ground leveling bodies 31, 31 are fixed to the rear end portions of the cover bodies 28, 28 of the left and right work machines 20, 20 via rubber plates 30, 30, respectively.

Next, connecting frames 32, 32 are fixed to the inner end portions of the left and right cover bodies 28, 28, respectively, and the lower ends of the left and right connecting pins 19, 19 are attached to the left and right connecting frames 32, 32. Are fixed together via bearings 32a and 32a.
Further, the left and right connecting pins 19 and 19 and the left and right connecting frames
32, 32 and Tei provided continuous dynamic pieces 33, 33 respectively integrally
It Then, communicating movement piece 33 of the other hand (left side) as shown in FIG. 3
The one with which protrudes toward the inside of the connecting frame 32 (on the left), communicating dynamic piece 33 is the other of the other (right side)
(Right side) It is provided so as to project toward the rear of the connecting frame 32 .

Further, the projecting end portion of the one connecting moving piece 33
The interlocking pin 34 is located in front of the one connecting pin 19.
There together are projected, said the projecting end of the other communicating dynamic piece 33 communicates <br/> rotating pin 34 is protruded located outside behind the other connecting pin 19. That is, as shown in FIG.
In addition, the left and right interlocking pins 34, 34 are the left and right connecting pins 1
It is erected from the front and back with the axis connecting 9 and 19 as the center.
ing. In addition, the axis connecting the left and right connecting pins 19, 19
The interlocking rod 35 as an interlocking body is arranged in a crossed manner in a crossed manner.
The one interlocking pin 34 is rotated at one end of the interlocking rod 35.
The other end of the interlocking rod 35 is movably attached to the other end.
The interlocking pin 34 is rotatably attached to the shaft.

Further, the brackets 22, protruding rearward from the inner end portions of the left and right connecting frames 21, 21,
The inner connecting plates 36, 36 integrated with the 22 and the connecting frame 21,
Outer connecting plate 3 protruding rearward from the outer side of 21
Support frames 38 and 38 are respectively fixed between the rear end portions of 7 and 37, and connecting projecting pieces 39 and 39 are parallel to each other at upper and lower rear sides near the inner end of the one support frame 38. It is projected.

Further, connecting pieces 40, 40 are fixed in parallel to each other on the inner upper and lower portions at the rear end portions of the left and right inner connecting plates 36, 36. The connecting pieces 40, 40 are connected to the left, right, upper and lower connecting pieces 40, 40, respectively. Pins 19 and 19 are inserted respectively, and the left and right connecting pins 19,
The 19 and the left and right connecting plates 36, 36 are fixed by cylindrical collars 41, 41 and lock pins 42, 42 so as not to rotate.

Further, upper and lower mounting pieces 43, 43 are provided in parallel at a rear portion of one side of the supporting frame 17 fixed to the rear end portion of the machine frame 1, and between the upper and lower mounting pieces 43, 43. A base end portion of a cylinder device 45 is rotatably attached to the mounting shaft 44 by a mounting shaft 44, and a tip end portion of a piston rod 46 of the cylinder device 45 is attached to a support shaft 47 between the upper and lower connecting projections 39, 39. It is rotatably attached to the shaft.

The left and right connecting frames 32, 32, the left and right interlocking pieces 33, the left and right interlocking pins 34, 34, the interlocking rod 35, and the cylinder device 45 have one of the connecting pins 19, 19 as a center. It is horizontally rotated in conjunction with the other of the working machine 20 in a horizontal rotation of the working machine 20 in a direction opposite to the one of the working machine 20, the left and right
The working machine 20 of No. 2 is horizontally extended to the left and right sides of the machine frame 1.
Interlocking mechanism 48 you interlocking pivots folded behind the state and the machine frame 1 is formed.

Further, the outer connecting plate of the one working machine 20.
A base end portion of a support rod 49 is rotatably attached to an inner portion of the middle of 37, and an insertion hole 50 is formed at a tip end portion of the support rod 49. Further, a protrusion 52 having a locking hole 51 communicating with the insertion hole 50 of the support rod 49 is fixed to the inner side part of the outer connecting plate 37 of the other working machine 20, and the locking hole 51 and the insertion hole are connected. A lock pin 53 is detachably attached to the 50.

The lower arms 3 on the left and right of the machine casing 1
A lock mechanism 55 such as a toggle clamp that locks the flanges 54, 54 at the opening edges of the cover bodies 26, 26 covering the clutches 14, 14 so as to be engageable and disengageable is provided on the outer side of the clutch 3.

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

The left and right lower pins 4, 4 are rotatably connected to the left and right lower links of the tractor, and the connecting portion 9 of the top mast 8 is rotatably connected to the top link of the tractor. Extraction axis (PT
A power transmission shaft having universal joints at both ends is connected between the (O shaft) and the input shaft 12.

Next, in the case of the work for cultivating and crushing soil, when the cylinder device 45 is operated and the piston rod 46 is extended, one working machine 20 moves backward with one connecting pin 19 as the center of rotation. while being horizontally rotated I toward or forward from parts, the communicating dynamic piece 33 is rotated, the interlocking rod 35 is pushed by the interlocking pin 34 of the connecting movement piece 33 at the associated rod 35 direction from the rear portion to the front via the interlocking pin 34 and the other communicating dynamic piece 33 and the other of the working machine 20 and the other of the connecting pin 19 as the pivot center
It is horizontally rotated I do.

That is, when one working machine 20 is horizontally rotated forward with one connecting pin 19 as a rotation center, the interlocking rod 35 is interlocked with the horizontal rotation of the one working machine 20, On the other hand of the working machine in the interlocking rod 35 20 is one of the working machine 20
Ru is horizontally rotated being interlocked synchronously toward the direction opposite to the.

The inner ends of the cylindrical cover bodies 26, 26 of the left and right working machines 20, 20 are the left and right flanges 11, 11 of the main frame 2.
When the left and right work machines 20, 20 are prevented from rotating by being contacted with and engaged with the clutch, substantially at the same time, one clutch claw body 15, 15 of the left and right clutches 14, 14 is opposed to the other clutch claw body 15. body
25, 25 are connected through the engagement of the respective clutch recesses and clutch pawls. Then, the left and right cover bodies
The left and right clutches 14, 14 are reliably covered by 26, 26, and sand and soil are prevented from entering the clutches 14, 14. Further, the flanges 54, 54 of the left and right cover bodies 26, 26 are locked by the lock mechanisms 55, 55.

In this manner, the left and right work machines 20, 20 are connected to the left and right sides of the machine casing 1 in a horizontally extended state, and the output shaft of the mission 5 provided in the machine casing 1 is connected.
The drive shafts 24, 24 of the left and right working machines 20, 20 are automatically connected to both end portions of 13, and the residual tillage treatment blade 29 is automatically arranged between the inner ends of the left and right working machines 20, 20. It is arranged. The rotary working bodies 27, 27 of the left and right working machines 20, 20 constitute a wide series of working widths for cultivated soil that are greatly expanded in the left-right direction to prepare for cultivated soil work.

Next, when the input shaft 12 of the mission 5 is rotated by the output from the power take-off shaft portion of the tractor while the main body is pulled by the tractor, the output shaft 13 of the mission 5 and the left and right clutches. 14, 14, drive shaft 2
The rotary work bodies 27, 27 of the left and right work machines 20 are respectively rotated and advanced via 4, 24 and the interlocking medium, and the left and right rotary work bodies 27, 27 are wider than the vehicle width of the tractor and project outward. While moving while being treated as cultivated soil with the working width, this rotary work body 27, 27 on the left and right
The cultivated soil between the inner end portions of the sill is advanced while being cultivated by the residual tillage treatment blade 29, and the surface portion is sequentially sloped by the soil terminating body 31.

Next, when the vehicle is traveling on the road or stored in the hangar, the left and right lock mechanisms 55, 55 are operated to unlock the flanges 54, 54 of the left and right cover bodies 26, 26, and the cylinder device. When shrinks piston rod 46 by operating the 45, as shown in FIGS. 1 and 2, one of the working machine 20, I or backward <br/> direction one of the coupling pin 19 as the pivot center It is rotated horizontally and this one connecting pin
19 and associated rod 35 by the rotation of the integral of the continuous moving piece 33 is pulled toward the front, the other working machine 20 via the other communicating dynamic <br/> piece 33 which is pivotally attached to the associated rod 35 There are horizontal pivoted I toward or backward the other connecting pin 19 as the pivot center.

Further, the left and right work machines 20, 20 are rotated rearward, and the flanges 54, 54 at the inner end portions of the cover bodies 26, 26 are provided with the flanges 11, 11 of the left and right lower arms 3, 3.
When separated from each other, the clutch claws 25, 25 of the other clutch are separated from the clutch claws 15, 15 of the left and right clutches 14, 14 at the same time. Then, when the piston rod 46 is greatly contracted, the left and right work machines 20, 20 are folded in parallel to the rear portion of the machine frame 1. Then, the tip portion of the support rod 49 of one working machine 20 is overlapped with the projecting piece 52 of the other working machine 20, and a lock pin is inserted from each locking hole 51 into the insertion hole 50.
Insert and lock 53.

Therefore, the left and right work machines 20, 20 are machine frames 1
From the state of horizontally projecting to the left and right portions of the machine frame, it is folded in parallel to the rear portion of the machine frame 1 to greatly reduce the width in the left and right direction, and is slightly deformed to a state suitable for road traveling and storage of a hangar. The left and right work machines 20, 20 are supported by the support rod 49.
By being locked at, driving safety is secured.

Next, in the above embodiment, one working machine 20
Interlocking mechanism 48 having interlocking rod 35 as means for horizontally rotating the other working machine 20 in synchronization with the horizontal rotation of the other working machine 20 in the opposite direction.
However, the present invention is not limited to this, and as shown in FIG. 4 and FIG. 5, one working machine 20 is connected to the other working machine 20 by the interlocking mechanism 48 configured by using a sprocket, a spur gear, and an endless chain. You may make it rotate horizontally synchronizing with an opposite direction.

In this case, vertical axes 60, 60 are provided at the lower left and right sides in the middle of the support frame 17 of the above-mentioned embodiment, and sprocket 61, 61 is provided at the lower side on the left and right vertical axes 60, 60, respectively. Bearings in which spur gears 62, 62 are rotatably mounted, respectively, and the spur gears 62, 62 are meshed with each other, while sprockets 63, 63 are provided under the left and right connecting pins 19, 19 of the above embodiment. The bodies 64, 64 are fitted and fixed by locking pins 65, 65, and the left and right sprockets 63, 63 and the spur gears 62, 62 are attached.
The endless chains 66, 66 are suspended between the sprockets 61, 61 of FIG.

With this structure, when the piston rod 46 is expanded and contracted by the operation of the cylinder device 45, the one working machine 20 is horizontally rotated and the one endless chain 66 is formed, as in the above embodiment. , Both spur gears 62,
Through the 62 and the other endless chain 66, the other work machine 20 is horizontally rotated in synchronization with the rotation direction of the one work machine 20. Then, the left and right work machines 20, 20 are horizontally extended to the left and right portions of the machine frame 1, and are pivotally displaced in parallel to the rear portion of the machine frame 1 from the left and right sides to have a width in the left and right direction. Is transformed into a greatly reduced state.

Next, the interlocking mechanism 48 for horizontally rotating the other working machine 20 in synchronism with the rotation of the one working machine 20 in the opposite direction is not limited to the above-mentioned respective embodiments, and for example, FIGS. As shown in FIG. 8, the left and right connecting pins 19 and 19 of the embodiment described above.
Bearings 67, 67 are fitted into the lower part of and are fixed by locking pins 68, 68, respectively. The upper and lower parts of the left and right bearings 67, 67 are wound up bodies including winding rollers and sprockets.
69, 69, 70, 70 are fixed to each other, and upper traction body consisting of wire chains etc. between the upper and left winding bodies 69, 69.
71 is stretched in a hooked shape, and a lower traction body 72 made of a wire or a chain is hung between the lower left and right winding bodies 70, 70 in the opposite direction of the upper traction body 71. You may make it extend | stretch and shape in a shape.

With this structure, when the piston rod 46 is expanded and contracted by the operation of the cylinder device 45, the one working machine 20 is rotated and at the same time, the one working machine 20 is constructed. The upper and lower traction bodies 71 and the lower traction bodies are provided on the upper, lower, left and right winding bodies 69, 69, 70, 70 depending on the rotation direction of the
72 are wound up in opposite directions, and the upper traction body 71 and the lower traction body 72 cause the other working machine 20 to rotate horizontally in synchronization with the one working machine 20 in the same direction. Then, the left and right work machines 20, 20 are horizontally extended to the left and right portions of the machine frame 1, and are pivotally displaced in parallel to the rear portion of the machine frame 1 from the left and right sides to have a width in the left and right direction. Is transformed into a greatly reduced state.

Next, the embodiment shown in FIG. 9 and FIG.
In each of the above-described embodiments, the left and right lower arms 3 of the machine casing 1 are
Cover bodies 73, 73 for covering the front portions of the clutches 14, 14 are fixed to the outer side portion of the clutch 3 in the middle thereof.

When the left and right work machines 20, 20 are rotatably displaced in parallel to the rear portion of the machine frame 1 by the left and right cover bodies 73, 73 and run in a set state, this machine is operated. The mud that is splashed backward from the left and right wheels of the towed tractor is the clutch pawls 15, 15, 25, 25 of the clutches 14, 14.
It is prevented from attaching to. Therefore, the left and right clutch pawls 15, 15, 25, 25 are always smoothly and reliably engaged and disengaged without being obstructed by the mud.

[0053]

According to the first aspect of the invention, the left and right working machines having the rotary working bodies are foldably connected to the left and right portions of the machine frame by connecting pins in the vertical direction. was possible rotatably driven by the output from the output shaft of the transmission when the overhanging lateral portion of the machine frame, on one working machine rotation as about the connecting pin between the inner end of the working machine of the left and right since the communication kinematic mechanism in conjunction with the other working machine in an opposite direction to the one working machine Ru is rotating and rotatably connected, thereby rotating either of the working machine in the left and right working machine a result, the other working machine reliably interlocked in the opposite direction to the one of the working machine can be rotating, thus, it is possible to link pivot left and right working machine in the opposite direction at the same time, the left and right work tongue out tension the machine to the left and right portions of the machine frame And a folded state to the rear of the machine frame
The operability of switching to can be greatly improved.
It In addition, the interlocking mechanism is located near the inner ends of the left and right work machines.
Left and right that are fixed to each other and rotate around the left and right connecting pins
Tie the left and right connecting pins to the left and right interlocking pieces
Left and right interlocking that is offset forward and backward around the axis
Interlocking body with both ends pivotally attached to the pin
Rotate each work machine for each left and right work machine
There is no need to install a cylinder device that allows you to connect left and right
By moving the interlocking body that crosses the axis connecting the pins
The left and right work implements can be reliably interlocked in the opposite direction.
It so, those working machine in a simple configuration for interlocking rotation is <br/> cost advantage of this right is large.

[0054] Further, since the left and right working machine coupled freely, respectively it in the vertical direction of the connecting pin rotation, not the weight balance between the left and right directions be folded behind the machine frame of the left and right working machine is significantly impaired It is stable and there is no risk of falling when driving on the road, so it is safe. Therefore, it is possible to provide a foldable agricultural working machine excellent in operability and safety.

According to the second aspect of the present invention, the interlocking mechanism includes a pair of spur gears rotatably mounted on the machine frame and meshing with each other, and sprockets provided on the left and right connecting pins, respectively. having a an endless chain which is respectively times the line freely suspended between the sprockets of the connecting pin and between sprockets of the other connecting pin with a sprocket of the one spur gear and the other spur gear sprocket Therefore, the rotation of one working machine can be surely converted and linked with the other working machine in the opposite direction to the rotating direction of one working machine, and the left and right working machines can be smoothly connected.
It can be dynamic rotation.

According to the third aspect of the present invention, the interlocking mechanism is stretched in the shape of a hook between the upper and lower winding bodies provided on the left and right connecting pins, and the winding bodies above the left and right connecting pins. The upper traction body and the lower traction body stretched in the shape of a hook in a direction intersecting the upper traction body between the lower winding bodies of the left and right connecting pins, so that the windings in the opposite directions are wound. in conjunction with the rotation of one of the working machine and the other working machine in the opposite direction <br/> direction and one of the working machine is reliably rotated at the upper traction member and the lower traction body is coiling at up body The number of parts is small and the structure is simple as compared with a conversion mechanism in which the other working machine is interlocked with the one working machine in the opposite direction.

[Brief description of drawings]

FIG. 1 is a plan view of an agricultural working machine showing an embodiment of the present invention.

FIG. 2 is a rear view of the same interlocking mechanism.

FIG. 3 is a plan view of a line portion of FIGS.

FIG. 4 is a rear view of an interlocking mechanism of another embodiment.

FIG. 5 is a plan view of line b-b of the above.

FIG. 6 is a rear view of an interlocking mechanism of still another embodiment.

FIG. 7 is a sectional view taken along line c-c of the above.

FIG. 8 is a cross-sectional view taken along line 6d-d of FIG.

FIG. 9 is a plan view of a cover body for the clutch.

FIG. 10 is a side view of the same as above, with one working machine folded.

[Explanation of symbols]

1 machine frame 5 mission 12 input shaft 19 connecting pin 20 work machine 27 rotary work body 33 interlocking piece 34 interlocking pin 35 interlocking body 48 interlocking mechanism 61 sprocket 62 spur gear 63 endless chain 69 winding body 70 winding body 71 upper traction body 72 Lower tow

Claims (3)

(57) [Claims] 1. A machine frame having a mission in which an input shaft is rotatably projected forward and both ends of an output shaft are rotatably projected leftward and rightward, and a vertical direction is provided on the left and right parts of the frame. folding with a rotary working member driven in rotation by an output from the output shaft when the protruding to the left and right portions of, respectively it rotating freely linked machine frame by connecting pins
And viewed freely right and left of the working machine, and the left and right working machine inner between the ends in the rotation of one of the working machine around the rotatably connected to the connecting pin and the other of the working machine of one working machine comprising a continuous moving mechanism Ru is rotating in conjunction with the opposite direction, and the interlocking mechanism, it inner end vicinity of the left and right working machine
They are fixed to each other and rotate about the left and right connecting pins.
The left and right interlocking pieces and the left and right connecting pins
The left that is projected forward and backward about the axis connecting the
Crosses the axis connecting the right interlocking pin and the left and right connecting pins
Both ends are respectively rotated to the left and right interlocking pins.
An agricultural working machine characterized by having an interlocking body movably attached to a shaft . 2. A machine frame having a mission in which the input shaft is rotatably projected forward and both ends of the output shaft are rotatably projected in the left-right direction, and a vertical direction is provided in the left-right part of the machine frame. folding with a rotary working member driven in rotation by an output from the output shaft when the protruding to the left and right portions of, respectively it rotating freely linked machine frame by connecting pins
And viewed freely right and left of the working machine, and the left and right working machine inner between the ends in the rotation of one of the working machine around the rotatably connected to the connecting pin and the other of the working machine of one working machine anda interlocking mechanism for rotating in conjunction with the opposite direction, the interlocking mechanism includes a pair of spur gears that mesh with each other with a sprocket rotatably Jikuka the machine frame, the connecting pins of the right and left Sprocket provided respectively, between the sprocket of the one connecting pin and the sprocket of the one spur gear, and between the sprocket of the other connecting pin and the sprocket of the other spur gear, respectively, freely rotatable. An agricultural working machine comprising: an endless chain that is suspended. 3. A machine frame having a mission that rotatably projects the input shaft forward and rotatably projects both ends of the output shaft horizontally, and a vertical direction on the left and right parts of the machine frame. folding with a rotary working member driven in rotation by an output from the output shaft when the protruding to the left and right portions of, respectively it rotating freely linked machine frame by connecting pins
And viewed freely right and left of the working machine, and the left and right working machine inner between the ends in the rotation of one of the working machine around the rotatably connected to the connecting pin and the other of the working machine of one working machine anda interlocking mechanism for rotating in conjunction with the opposite direction, the interlocking mechanism includes upper and lower wound-up body respectively provided connecting pins of the right and left, winding of the upper portion of the connecting pin of the left and right-up body An upper traction body stretched in a sword-like shape between them, and a lower traction body stretched in a sword-like shape in a direction intersecting with the upper traction element between the lower winding bodies of the left and right connecting pins , Have
Agricultural machine, characterized in that that.