JPH0711528Y2 - Farm work machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an agricultural work machine, for example, to a work machine for performing soil work such as plowing work and scraping work.

(Prior Art) Conventionally, as an agricultural work machine for performing this type of soil work, for example, a main frame extending in the left-right direction having a mission in a machine frame is provided, and a chain is provided at both ends in the left-right direction of the main frame. A case and a bracket are arranged in series to face each other, a rotary work body is rotatably mounted between the lower ends of the left and right chain cases and brackets, and the rotary work body is interlockingly connected to the mission. There is something. Then, while the machine frame is towed and advanced, the rotary work body is rotated by the output from the mission, and the cultivated soil is sequentially cultivated by the rotary work body.

(Problems to be Solved by the Invention) In the structure described above, the rotary working body has a working width substantially corresponding to the length of the main frame extending in the left-right direction of the machine frame. In recent years, it has not been possible to adequately meet the increasing desire to increase the working width and the improvement in work efficiency, and when the working width of the rotary working body is increased in the left-right direction, this rotary working body There is a problem that traveling on a road while the vehicle is set on a towing vehicle such as a tractor causes a traffic obstacle, and that the hangar cannot be stored because it cannot pass through the doorway.

Therefore, a working machine having a rotary working body driven by the output from the mission is rotatably connected to the left and right parts of the machine frame, and is connected to both ends of the output shaft of the mission and the rotary working body of the working machine. A structure has been proposed in which the inner end of a drive shaft that transmits output is interlocked and connected by a universal joint.

However, with this structure, while the working width of the rotary working body is expanded to improve work efficiency, it is possible to reduce the outward extension of the working machine if necessary. Since the inner ends of the drive shafts of the left and right working machines are connected by a universal joint, there is a limitation that the inward rotation reduction width of the left and right working machines is within the allowable range of the bending angle of the universal joint. Therefore, the left and right working machines are only reduced in a state where they are expanded and inclined rearward outward at a predetermined tilt angle, and are rotatably displaced rearward in parallel to further reduce the left and right working machines. Can't
There is a problem.

As described in Japanese Patent Application Laid-Open No. 61-282001, the left and right parts of the central tiller are provided with side tillers that have a shallower working depth than the central tiller and are pivotally supported in the vertical direction. In this configuration, when the left and right side cultivators are vertically folded upward, the center of gravity of the tiller will be high, and the weight balance in the horizontal direction will be poor and stability will be high. However, there is a risk of falling when driving on the road.

Therefore, the present invention has been made in view of such a point, and at the time of work, the left and right work machines are horizontally extended to the left and right parts of the machine frame, and the working width of the rotary work body is expanded to perform work. While efficiency can be improved, the left and right working machines can be set to be displaced so as to project in parallel to the rear of the machine frame when not working, so the left and right working machines can be reduced to the maximum when not working. The width of the left and right sides can be made smaller, and the center of gravity of the agricultural work machine does not become higher as in the case of vertically folding the left and right work machines upward, and the left-right weight balance is greatly impaired. The purpose of the present invention is to provide an agricultural work machine that is stable and does not have the risk of falling when driving on roads, is safe, can solve the problem of traffic obstacles, and can be easily stored in a hangar. .

(Means for Solving the Problems) The agricultural work machine according to claim 1 is a mission in which the input shaft is rotatably projected forward and both ends of the output shaft are rotatably projected leftward and rightward. With a machine frame,
It has a rotatable drive shaft that is horizontally rotatably connected to the left and right parts of the machine frame by connecting pins in the vertical direction and is driven by the output from the output shaft, and is rotationally driven by the output from the drive shaft. Left and right working machines having rotary working bodies that have the same working depth, one clutch pawl fixed to both ends of the output shaft of the machine frame, and inner end portions of the drive shafts of the left and right working machines The clutch having the other clutch claw that is fixed to the one clutch claw and the other clutch claw that is engaged with and disengaged from the one clutch claw, and the left and right connecting pins that are connected between the rear portion of the machine frame and the left and right working machines. A cylinder device in which the left and right work machines are horizontally rotated about the center of rotation to be horizontally extended to the left and right parts of the machine frame and to be projected in parallel to the rear of the machine frame and to disengage the left and right clutches. And, it is those provided with the.

The agricultural work machine according to claim 2 has the structure according to claim 1, wherein one side of the left and right outer parts of the machine frame and the inner ends of the left and right work machines is covered with a clutch and also serves as a stopper. The cover body is fixedly attached.

(Operation) In the agricultural working machine according to claim 1, during the work of cultivating and soiling work, when the cylinder device is actuated to extend the respective piston rods, the left and right working machines use the respective connecting pins as the rotation centers. When the inner ends of the left and right working machines are brought into contact with the left and right parts of the machine frame, the left and right clutches are meshed with each other substantially simultaneously. Therefore, the left and right work machines are connected to the left and right parts of the machine frame in a horizontally extended state, and both ends of the output shaft of the machine frame can respectively transmit the output to the drive shafts of the left and right work machines. Connected to possible state.

Then, for example, when the input shaft is rotated by the output from the power take-off shaft portion of the tractor while the machine is being pulled by the tractor, the output is the output shaft of the mission.
It is transmitted to the left and right rotary work bodies via the clutch and drive shaft, and the left and right rotary work bodies are rotationally driven and advanced, and the left and right rotary work bodies cause the cultivated soil to be wider than the vehicle width of the tractor and wide in the left and right direction. Proceed while cultivating soil one by one with the working width.

Next, when driving on the road or storing in the hangar, when the cylinder device is operated and the piston rods are largely contracted, the left and right work machines rotate horizontally toward the rear around the respective connecting pins. When they are moved and separated from the left and right parts of the machine frame, the left and right clutches are separated at about the same time. When the left and right piston rods are greatly contracted, the left and right work machines are rotationally displaced so as to project in parallel to the rear of the machine frame. Therefore, the width of the machine in the left-right direction is greatly reduced, and the machine is preferably deformed for traveling on the road and storing in the hangar.

Further, in the agricultural working machine according to claim 2, the cover body prevents the left and right working machines from rotating by contacting the inner end portion of the cover body with the left and right portions of the machine frame, and covers the clutch. To do.

(Embodiment) An embodiment of the present invention will be described below with reference to the accompanying drawings.

In the drawing, reference numeral 1 denotes a machine frame, which has a hollow cylindrical main frame 2 extending in the left-right direction, and left and right end portions of the main frame 2 are provided with right and left protruding parts. The lower arms 3 and 3 have their respective base ends inserted and fixed respectively.
Lower pins 4 and 4 are provided at the tips of the pins 3 and 3, respectively. Further, a mission case body 6 having a built-in mission 5 is provided at an intermediate portion of the main frame 2, and the left and right mounting pieces 7 and 7 projecting from the upper portion of the mission case body 6 have top masts 8 and 8 attached thereto. The base end portions are fixed to each other, and the left and right top masts 8, 8 are provided with connecting portions 9, 9 at the tip end portions thereof, and the left and right top masts 8, 8 and the left and right lower arms 3, 3 are Are connected by stays 10, 10.

Further, both ends of the main frame 2 are projected to the outer side of the base end portions of the left and right lower arms 3, 3, and annular flanges 12, 12 are formed on the left and right projecting end portions 11, 11. ing. Further, the input shaft 13 of the mission 5 is rotatably projected forward, and the mission 5
The output shaft 14 is rotatably provided in the main frame 2, and both ends of the output shaft 14 are bearings 15, 15 in both ends of the main frame 2.
Is rotatably projected to the outside of the lower arms 3, 3.

Also, one of the clutch pawls 18, 18 of the clutch 17, 17 is fixed to the protruding shaft portions 16, 16 at both ends of the output shaft 14 in the axial direction and is slidably attached in the axial direction. A plurality of clutch recesses 19, 19 and a plurality of clutch pawls 20, 20 are formed on the outer end portion of the one clutch pawl body 18, 18. Further, the protruding shaft portions 16, 16 between the one clutch pawls 18, 18 and the bearings 15, 15 have one clutch pawls 18, 18
Coil springs S, S for urging the clutch outwardly are wound, and stoppers 25, 25 for preventing the clutch pawls 18, 18 from coming off are wound around the outer ends of the protruding shafts 16, 16. It is fastened.

Also, the left and right ends of the main frame 2 are fixedly inserted with the tips of the left and right connecting arms 21, 21 protruding horizontally toward the rear, between the rear end portions of the left and right connecting arms 21, 21. Is support frame 2
2 is fixed, and the left and right connecting arms 21,
Coupling pieces 23, 23 are fixed to the upper and lower sides of the rear end outside portion of the clutch 21 so as to face each other, and the clutches 17,
Connecting pin 24,2 located rearward of the center of 17 and extending vertically
4 are inserted and removed freely.

Further, 26, 26 are working machines arranged on both left and right sides of the machine frame 1, and the working machines 26, 26 on the left and right have hollow pipe-shaped connecting frames 27, 27. Brackets 28, 28 are fixed to the inner ends of the connecting frames 27, 27, and chain cases 29, 29 are attached to the outer ends of the connecting frames 27, 27.
The upper end of is fixed.

Further, the drive shafts 30, 30 are provided in the left and right connecting frames 27, 27.
Is rotatably inserted and supported by bearings (not shown). The inner ends of the drive shafts 30 and 30 project toward the inside of the brackets 28 and 28, and The outer end of the chain case projects into the upper part of the chain case 29, 29. Further, the other clutch claw bodies 32, 32 of the clutches 17, 17 are fixed to the projecting shaft portions 31, 31 of the inner ends of the drive shafts 30, 30, and the inner end portions of the other clutch claw bodies 32, 32 are fixed. A plurality of clutch recesses 19, 19 of the one clutch pawl 18, 18 and a plurality of clutch recesses 33, 33 and clutch pawls 34, 34 that are disengageably engaged with the clutch pawls 20, 20 are formed in the clutch pawl body 18, 18. There is.

Further, the outer end opening edge portion of the cylindrical cover body 35 that also serves as a stopper is fixed to the inner portions of the above-mentioned rackets 28, 28 while covering the one and the other clutch pawls 18, 18, 32, 32. Elastic packings 36, 36 that are releasably engaged with the outer peripheral flanges 12, 12 of the one clutch pawls 18, 18 are fixed to the opening edge of the inner end of the cover body 35.

In addition, cover bodies 37, 37 are fixed to the lower ends of the brackets 28, 28 and the chain cases 29, 29 in the vertical direction, and are fixed to the side plates 37a, 37a of the inner ends of the cover bodies 37, 37. Between the brackets 38, 38 and the lower ends of the chain cases 29, 29, cultivating shafts 39, 39 are horizontally rotatably mounted on bearings 40, 40. A large number of tillage claws 41, 41 are radially projected on the part. Then, the cover body 37, 3 is formed by the cultivating shaft 39, 39 and a large number of cultivating claws 41, 41.
The rotary working bodies 42, 42 whose upper portion is covered by 7 are configured. Then, the left and right rotary working bodies 4
2, 42 have the same depth of plowing with each plowing claw 41, 41, that is, the plowing depth.

Further, the left and right rotary work bodies 42, 42 are rotatably connected to the drive shafts 30, 30 via an interlocking medium including a chain provided in the chain cases 29, 29. Further, the support 44 of the residual tillage treatment blade 43 is fixed to the bracket 38 of the one working machine 26 via the upper and lower spacers 38a, 38a, and the residual tillage treatment blade 43 is the lower end portion of the support 44. It is fixed in a state in which it is inclined forward and downward.

Further, first leveling plates 46, 46 are fixed to the rear end portions of the cover bodies 37, 37 of the left and right working machines 26, 26 via rubber plates 45, 45, respectively. At the lower end of
The second leveling plates 48, 48 are rotatably pivoted in the vertical direction. Further, suspension arms 49, 49 are horizontally projected rearward from the left and right rear end portions of the left and right cover bodies 37, 37. The supporting rods 50, 50 rotatably erected on shafts 50a, 50a are vertically movably inserted through the leveling plates 46, 46 of one unit, and the supporting rods 50, 50 are respectively supported by the suspension arms 49, 49. Coil springs 51, 51 are wound around the support rods 50, 50 projecting upward and between the upper ends of the support rods 50, 50 and the suspension arms 49, 49. Each of the supporting rods 50, 50 is supported by 51 so as to be vertically movable.

In addition, a shaft 5 is provided at a substantially middle portion of the left and right second ground leveling plates 48, 48.
The lower ends of the suspension rods 53, 53 are vertically rotatably supported by 2, 52, and the upper portions of the left and right suspension rods 53, 53 are fixed to support frames 57, 57 described later. Vertically movable inserts are inserted into the guides 55, 55 of the brackets 54, 54 each having a V-shape, and locking pins 56, 56 are projected from the left and right upper ends of the left and right suspension rods 53, 53, respectively.

In addition, the support frame 5 to which the left and right brackets 54, 54 are fixed
7 and 57 are each formed in a prismatic shape. In addition, the left and right support frames 57, 57 are connected to the inner connecting plates 58, 58 integral with the brackets 28, 28 protruding rearward from the inner ends of the left and right connecting frames 27, 27 and the connecting frames 27, 27. Are fixed to the outer connecting plates 59, 59 protruding rearward from the outer side of the. Further, connecting pieces 60, 60 in which the vertical connecting pins 24, 24 are rotatably inserted are fixedly fixed to the inner upper and lower portions of the left and right inner connecting plates 58, 58. The left and right work bodies 26, 26 are pivotally attached to the machine frame 1 so as to be rotatable in the horizontal direction with the left and right connecting pins 24, 24 as the center of rotation.

The left and right brackets 54, 54 are rotatably supported by pivot shafts 61, 61 at one end of cam plates 62, 62, respectively, and the other ends of the left and right cam plates 62, 62 are pivotally supported. The tip of the piston rod 64, 64 of the cylinder device 63, 63 is interlocked with the rod 6
This cylinder device is rotatably pivoted at 5,65
The base ends of the main bodies 66, 66 of 3 are rotatably supported by brackets 67, 67 protruding from the support frames 57, 57 by support shafts 68, 68.

The left and right cam plates 62, 62 have engagement projections 69, 69, engagement recesses 70, 70 and a guide edge 71 on the outer peripheral edge of which the engagement pins 56, 56 are removably engaged. , 71 are formed continuously. Further, coil springs 73, 73 having lower ends locked to stoppers 72, 72 projecting in the middle of the suspension rods 53, 53 are wound around the left and right suspension rods 53, 53. ing. Further, the left and right cover bodies 37, 37 are made of a rubber plate at the rear end of the inner ends of the left and right tillage blades 43, 43 that overlap each other at the rear portion of the left and right working machines 26, 26 to close the inner end portions of the work machines 26, 26. Elastic cover bodies 74, 74 are vertically fixed.

Next, the support frame 22 of the machine frame 1 is provided with a cylinder device up and down.
75, 75 are arranged, and the cylinder devices 75, 75 are provided on the upper and lower sides of the main body 76, 76, respectively, such that the base ends of the main bodies 76, 76 are rotatably supported by vertical support shafts 77, 77, respectively. Brackets 79, 79 projecting from the inner ends of the supporting frames 57, 57 of the left and right work machines 26, 26 are provided at the tips of the piston rods 78, 78 projecting in opposite directions of the vertical axis 80, It is pivotally attached at 80.

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

The left and right lower pins 4, 4 are connected to the left and right lower links of the tractor, the connecting parts 9, 9 of the top masts 8, 8 are connected to the top link of the tractor, and the input shaft 13 is universal to the power take-off shaft of the tractor. The joints are connected via power transmission shafts having both ends.

Next, for example, when cultivating soil on the inner side from the ridge, when the upper and lower cylinder devices 75, 75 are operated to extend the respective piston rods 78, 78, the left and right working machines 26, 26 Are horizontally rotated from the rear toward the front with the connecting pins 24, 24 as the rotation centers, and the inner ends of the cylindrical cover members 35, 35 are left and right flanges 1 of the main frame 2.
Positioned in contact with 2,12 and left and right work machines 26,2
When the rotation of 6 is blocked, the clutches 17 and 17
Is a plurality of clutch recesses 19, 19, 33, 33 for the other clutch pawls 32, 32 for one clutch pawl 18, 18, respectively.
Also, the clutch claws 20, 20, 34, 34 are meshed and connected.

In this case, since the elastic packings 36, 36 are fixed to the inner ends of the left and right cover bodies 35, 35, the impact on the flanges 12, 12 is buffered, and the left and right cover bodies 35, 35 are
Thus, the clutches 17, 17 are surely covered, and sand or soil is prevented from entering the clutches 17, 17. Further, since the one clutch pawl 18, 18 is provided slidably only in the axial direction by the coil springs S, S with respect to the projecting shaft portions 16, 16 of the output shaft 14, the one clutch The forward and backward movements of the pawls 18 and 18 allow the clutch pawls 32 and 32 of the other clutch to be meshed with each other smoothly and reliably. Therefore, the left and right work machines 26, 26 are connected to the left and right parts of the machine frame 1 in a horizontally extended state, and the output shaft 14 and the left and right drive shafts 30, 30 are automatically arranged. Further, the left tillage treatment blade 43 is automatically disposed between the inner ends of the left and right work machines 26, 26, and the left tillage treatment blade 43 is
Left and right elastic cover bodies 74,74 with the rear part of the
Is blocked by.

Next, the machine pulls the tractor and advances, and the output from the power take-off shaft of the tractor causes the input shaft to move.
When 13 is rotationally driven, the output of this input shaft 13 rotationally drives the left and right rotary work bodies 42, 42 via the output shaft 14 of the mission 5, the clutches 17, 17, the drive shafts 30, 30 and the interlocking medium. It And this left and right rotary working body 4
By the rotation progress of 2, 42, the cultivated soil is successively cultivated at the same working depth in the left and right rotary working bodies 42, 42 with a wide working width larger than the vehicle width of the tractor and protruding outward, and the left and right rotary The cultivated soil located between the inner ends of the work bodies 42, 42 is progressively cultivated by the residual tillage treatment blade 43 and is advanced.

Further, the soil cultivated by the left and right rotary working bodies 42, 42 is the rubber plate 45 and the first leveling plate that are towed and advanced.
The soil that has been gradually advanced by 46 or also together with the second leveling plate 48 and cultivated by the residual tillage treatment blade 43 is sequentially advanced by the overlapped left and right elastic cover bodies 74, 74, and the left and right elasticities thereof are also increased. The cover bodies 74, 74 are advanced while preventing the soil from being blown out from between the rear side portions of the left and right cover bodies 37, 37.

Next, when traveling on the road or stored in the hangar, the upper and lower cylinder devices 75, 75 are actuated to greatly contract the respective piston rods 78, 78.
Are horizontally rotated rearward about the respective connecting pins 24, 24 as the center of rotation, and when the inner ends of the respective cover members 35, 35 separate from the flanges 12, 12, the left and right clutches 17, 17 will be substantially at the same time. The other clutch pawl 32, 32 is separated from the one clutch pawl 18, 18 and is separated.

Then, when the left and right piston rods 78, 78 are greatly contracted, the left and right work machines 26, 26 are rotationally displaced so as to project in parallel to the rear of the machine frame 1, and therefore the width in the left-right direction is greatly reduced. It is slightly modified to be suitable for road driving and storage of hangars. When the left and right work machines 26, 26 are horizontally rotated and displaced, the left and right elastic cover members 7
Even if the 4,74 interfere with each other, they are prevented from being elastically deformed and damaged, and their rotation is not hindered.

Next, during earthmoving work, the left and right cylinder devices 63, 63
When the piston rods 64, 64 are expanded and contracted by operating the left and right piston rods 64, 64, the left and right cam plates 62, 62 are rotated about the respective support shafts 61, 61, and the left and right cams are rotated. Left and right suspension rods 53, 53 are provided in the engaging recesses 70, 70 of the plates 62, 62.
When the locking pins 56, 56 of are engaged, the left and right cam plates 62,
The left and right suspension rods 53, 53 are lowered at 62, and the second
The leveling plates 48, 48 are rotated downward about the respective support shafts 47, 47, and are held in a state of protruding downward at a predetermined inclination angle. Then, the second leveling plates 48, 48 of the left and right work machines 26, 26 are locked in the set state, and the soil at the high position is attracted to the low position by the advancing of the tow and the leveling is made flat.

Further, when the left and right cylinder devices 63, 63 are operated to contract the extended piston rods 64, 64 during the scraping work, the left and right piston rods 64, 64 cause the cam plates 62, 62 to support the respective support shafts 61, It is rotated around 61 as a rotation center, and the locking pins 56, 5 are inserted from inside the engaging recesses 70, 70 of the left and right cam plates 62, 62.
When 6 is disengaged, the hanging rods 53, 53 are unlocked, and the left and right second leveling plates 48, 48 are set in a free state. Therefore, the second leveling plates 48, 48 of the left and right work machines 26, 26 are supported by the respective brackets 54, 54 so as to be vertically movable via the suspension rods 53, 53 and the coil couplings 73, 73. The left and right second leveling plates 48, 48 are towed, and the left and right second leveling plates 48, 48 are pulled.
The ground surface that has been scraped at is leveled in order.

Furthermore, the three-point suspension mechanism of the tractor allows the left and right work machines
When suspending the whole including 26, 26, when the left and right cylinder devices 63, 63 are actuated to expand and contract the piston rods 64, 64, the left and right piston rods 64, 64 cause the cam plate 62,
62 are rotated about their respective support shafts 61, 61, and the left and right suspension rods 5 are mounted on the engaging projections 69, 69 of the left and right cam plates 62, 62.
When the locking pins 56, 56 of the 3, 53 are locked, the left and right suspension rods 53, 53 are pulled up by the left and right cam plates 62, 62, and the left and right second leveling plates 48 are , 48 are pivoted upward about the support shafts 47, 47, and the left and right second leveling plates 48, 48 are held in a state of being pulled up. Therefore, the left and right second leveling plates 48, 48 are locked, and the entire suspension can be prepared.

(Effects of the Invention) According to the invention of claim 1, the left and right working machines having the rotary working body are horizontally rotatably connected to the left and right parts of the machine frame by the connecting pins in the up and down direction, respectively. Since a cylinder device for horizontally rotating the left and right work machines is connected between the rear part of the frame and the left and right work machines, the left and right work machines are connected to the left and right parts of the machine frame by the cylinder device during the work for cultivating and plowing soil. By setting the overhanging state, a wide working width can be formed with the rotary working bodies of the left and right working machines, which has the same large working depth in the left and right directions of the machine frame. It is possible to reliably improve work efficiency in the body. Also, since the inner ends of the drive shafts of the left and right work machines and the both ends of the output shaft of the machine frame are releasably connected by a clutch, the left and right work machines are extended to the left and right parts of the machine frame. The output shaft and the drive shaft are automatically connected to each other by the clutch, and the output of the output shaft can be surely transmitted to the drive shaft.

Also, when not in operation, when the left and right working machines are rotated toward the rear of the machine frame by the cylinder device around the vertical connection pins, the clutch automatically disconnects the connection between the output shaft and the left and right drive shafts. The left and right working machines can be smoothly rotated rearward about the connecting pin, and the left and right working machines can be easily set in the state of projecting parallel to the rear of the machine frame. The working machine can be shrunk inward as much as possible, and the left and right widths can be surely made smaller than when working, the problem of traffic obstacles can be reliably solved, and storage in the hangar can be performed easily. be able to. Also, the center of gravity of the agricultural work machine does not become high unlike the one in which the left and right work machines are vertically folded upward,
The weight balance in the left-right direction is not significantly impaired and stable, and there is no risk of falling when driving on the road, so it is safe.

Furthermore, since the cylinder device is used to rotate the left and right work machines in the horizontal direction and to connect and disconnect the clutch,
The number of parts is small and the structure is simple.

Therefore, it is possible to provide an agricultural working machine that is excellent in workability and safety and is easy to transport and store.

According to the invention of claim 2, by providing the cover body, the left and right working machines can be reliably positioned with respect to the machine frame, the clutch can be covered, and the clutch can be reliably protected from dirt and the like. You can

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a plan view of an agricultural work machine, FIG. 2 is a side view of the same, and FIG.
A side view of a part of the line portion, FIG. 4 is a perspective view in a direction of an arrow in FIG. 1b in which the working machine on one side is folded, and FIG.
6 to 7 are side views showing a state in which the working machine is folded, and FIGS. 8 and 9 are operation explanatory views of the leveling plate. 1 ... Machine frame, 5 ... Mission, 13 ... Input shaft, 14 ...
Output shaft, 17 …… Clutch, 18 …… One clutch pawl,
24 …… Connecting pin, 26 …… Working machine, 27 …… Connecting frame,
30 …… Drive shaft, 32 …… Clutch body on the other side, 35 …… Cover body, 42 …… Rotary work body, 75 …… Cylinder device.

Claims (2)

[Scope of utility model registration request] 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 left and right direction of the machine frame is a vertical direction. Rotary work which has a rotatable drive shaft which is rotatably connected in a horizontal direction by a connecting pin and which is driven by an output from the output shaft, and which is rotationally driven by an output from the drive shaft and has the same working depth. Left and right working machines having bodies, one clutch claw fixed to both ends of the output shaft of the machine frame, and one clutch claw fixed to inner ends of the drive shafts of the left and right working machines, respectively. A clutch having the other clutch pawl that engages and disengages with the body, and a left and right work machine connected between the rear portion of the machine frame and the left and right work machines with the left and right connection pins as the center of rotation. Horizontal And a cylinder device for moving and displacing the left and right clutches to the left and right sides of the machine frame in a horizontally projected state and a state in which the left and right clutches are projected in parallel to the rear side of the machine frame. Machine. 2. The agricultural work according to claim 1, wherein one side of the left and right outer side portions of the machine frame and the inner end portions of the left and right working machines is covered with a clutch and fixed with a cover which also serves as a stopper. Machine.