JPH0639531Y2 - Tillage machine - Google Patents

Description

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

(Prior Art) Conventionally, as a tilling machine for performing this type of tilling soil work, for example, a chain case and a bracket are continuously connected to both left and right ends of a machine frame having a mission, and the left and right chain cases are connected to each other. The rotary cultivator is rotatably mounted between the lower ends of the bracket and the bracket, and the rotary cultivator is interlocked with the mission.

Then, as the machine frame is advanced, the rotary work body is rotated by the output from the mission, and the cultivated soil is cultivated by the rotary cultivated body.

(Problems to be solved by the invention) In the above-mentioned structure, the rotary tillage body has a working width substantially corresponding to the length extending in the left-right direction of the machine frame. There is a problem that it is not possible to adequately meet the demand for increasing the width and increasing the work efficiency. On the other hand, if the working width of the rotary cultivator is increased due to the above-mentioned demand, it will cause a traffic obstacle when traveling on the road with the cultivator such as a tractor set, and it will pass through the entrance to the storage for storage. There is a problem that it cannot be stored because it cannot be stored.

Moreover, since the position of the conventional rotary cultivated body is fixed in a state of extending in the left-right direction with respect to the machine frame, the soil on the ridge is moved inward from the ridge. The problem is that it is almost impossible.

Therefore, the present invention has been made in view of such a point,
While increasing the working width of the rotary cultivator to improve the work efficiency of cultivating and crushing soil work, it enables soil digging work by pulling the soil near the ridges inward, and further reduces the overhang to the outside when necessary. It is an object of the present invention to provide a tilling machine that eliminates the risk of traffic obstacles for a while and is easy to store in a storage cabinet.

(Means for Solving Problems) A tillage implement according to the present invention is connected to a three-point suspension mechanism of a tractor and a mission in which an input shaft connected to a power take-off shaft of a tractor is rotatably projected forward. And a working machine having rotatably mounted rotary tillers rotatably driven by the output from the mission, which are arranged on both lateral sides of the machine frame. In the machine frame, the connecting frames are fixed to both side portions in the left-right direction, and the connecting bodies project from the rear side portions, and the left and right working machines are mounting frames that rotatably support the rotary tillers. And a mounting frame that is fixed to the inner end of the mounting frame, the mounting frame facing the connecting frame of the machine frame being provided with a cover body that covers the upper portion of the rotary tiller on the mounting frame. Ream A support frame is provided in a protruding manner at a position facing the union, and the attachment frames of the left and right work machines are rotatably supported on the left and right connection frames of the machine frame by a rotation center axis in the front-rear direction, The base end of the cylinder device is rotatably supported by the left and right parts of the connecting body of the machine frame, and the support frames of the left and right work machines are respectively rotated by the tip ends of the piston rods of the left and right cylinder devices. A rotatably rotatably pivoting device, in which the left and right cylinders are vertically rotated about the rotation center axis to vertically rotate the left and right work implements to tilt the rotary cultivated body downward from a horizontal cultivated soil position. Rotation is set to the position and the folding position in which it is pulled upward.

(Operation) In the tiller according to the present invention, the three-point suspension mechanism of the tractor is connected to the three-point connecting portion of the machine frame, and the power take-off shaft of the tractor is connected to the input shaft of the mission. Further, when the rotary tillage bodies of the left and right working machines are set to the horizontal tilling and crushing soil working positions by the left and right cylinder devices, the rotary tillage bodies of the left and right working machines are set to the state of being projected in the left and right direction.

When the input shaft is rotated by the output from the power take-out shaft of the tractor while the tractor pulls the machine, the rotary cultivated bodies of the left and right work machines are rotationally driven by the output from this mission. The cultivated soil is advanced in the left and right rotary tillage bodies while sequentially cultivating soil with a wide working width in the left-right direction, and this cultivating soil work is performed with high efficiency.

Next, in the work near the ridge, when the cylinder device of the working machine located on the ridge side is operated to extend the piston rod, the working machine located on the ridge side is rotated by the piston rod. Is tilted down to a predetermined tilt angle with respect to the machine frame, and the rotary cultivated body of this working machine is similarly set to the earth closing work position which is tilted down to a predetermined tilt angle.

Then, the machine is towed by the tractor, and the cultivated soil near the ridge is progressively cultivated by the rotary cultivated body of the working machine on the ridge side in a descending slant state. At the ridge, the cultivated soil near the ridge is gradually cultivated while being gathered inward in the direction away from the ridge side. Further, the cultivated soil is successively cultivated and cultivated by the horizontally cultivated rotary tiller of the working machine located on the side opposite to the ridge side.

Next, when traveling on the road or storing in a storage box, the cylinder device of one or both working machines is activated to cause the piston rod to contract greatly, and this piston rod causes one or both of the working machines to move at their respective times. The rotary tillage body of this working machine is similarly pulled up and rotated about the center axis of movement about the machine frame, and the rotary tiller of this working machine is also pulled up and set to the folding position.

Then, in the working machine having the rotary cultivated body that has been pulled up and rotated, the width in the left-right direction of the machine is reduced to a small size, and the machine is transformed into a state suitable for road traveling and storage in a storage box. Therefore, this machine can be easily stored in the storage box without the risk of traffic obstacles when traveling on the road.

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

1 and 2, reference numeral 1 denotes a main body frame, that is, a machine frame, which has a main frame 2 extending in the left-right direction, and lower arms 3 are provided on both left and right sides of the main frame 2. The left and right lower arms 3 are fixed to each other, and lower pins 4 project from the tips of the left and right lower arms 3.

Further, a mission 5 is provided in an intermediate portion of the main frame 2, and a top mast 8 is fixed to a pair of mounting pieces 7 projecting from an upper portion of a case body 6 of the mission 5, and the top mast 8 is A connecting pin 9 is provided at the tip of 8. The top mast 8 and the left and right lower arms 3 are connected by left and right stays 10. The left and right lower pins 4 and the connecting pin 9 constitute a three-point connecting portion that connects to the three-point suspension mechanism of the tractor.

Further, front and rear connecting plates 11 are fixed to the base end portions of the left and right lower arms 3 so as to face each other, and the front and rear connecting plates 11 form a connecting frame.

As shown in FIG. 3, the mission 5 has an input shaft 12 rotatably projecting forward through a bearing on the front side of the case body 6, and
It has a first output shaft 14 and a second output shaft 15 which are rotatably supported by bearings 13 which are arranged and fixed on both left and right sides. That is, each of the first output shaft 14 and the second output shaft 15 has a spline shaft portion 16 on the inner side thereof, and the spline shaft portion 16 of the first output shaft 14 and the second output shaft 15 is The bearings 13 are spline-fitted so as to be movable back and forth in the axial direction. Also, this first output shaft 14
An inner end portion of the spline shaft portion 16 of the second output shaft 15 is spline-fitted in the inner end portion of the second output shaft 15 so as to be movable back and forth.

A bevel gear 17 fixed to the inner end of the input shaft 12 is meshed with a bevel gear 17 attached to the spline shaft portion 16 of the first output shaft 14. Further, outer portions of the first output shaft 14 and the second output shaft 15 are rotatably provided in the main frame 2 and the first output shaft 14
The outer end portion of the second output shaft 15 is projected between the connecting frame, that is, between the front and rear connecting plates 11.

Numeral 19 is a working machine disposed on both left and right sides of the machine frame 1. The left and right working machines 19 have a hollow pipe-shaped mounting frame 20, and an outer end portion of the mounting frame 20. An upper end of a mounting plate 22 of the chain case 21 is fixed to the lower end of the mounting plate 22 of the chain case 21.
The outer end of the cultivating shaft 23 arranged in parallel with the cultivating shaft is rotatably mounted, and a large number of cultivating claws 24 are radially provided at predetermined intervals on the outer peripheral portion of the cultivating shaft 23 in the axial direction. ing.

A drive shaft 25 is rotatably provided in the mounting frame 20, and a spline shaft portion 26 formed on an outer end portion of the drive shaft 25 is fixed to an upper end portion of a mounting plate 22 of the chain case 21. Between the sprocket 28 fixed to the outer end of the spline shaft portion 26 and the sprocket (not shown) in the chain case 21 of the tilling shaft 23. The chain 29 is suspended freely. Further, the tilling shaft 23 and the large number of tilling claws 24 form a soil work body, that is, a rotary tiller 30.

Further, a cover body 31 covering the upper portion of the rotary tiller 30 is provided in the lower portion of the mounting frame 20, and the tiller shaft 23 is provided at the lower end portions of the side plates 32 on both left and right sides of the cover body 31.
Both ends of the cover are rotatably inserted and supported, and a support frame 33 is projectingly provided at a substantially middle rear part of the left and right cover bodies 31.

In addition, the inner end of the mounting frame 20 has front and rear mounting plates.
The base end of the U-shaped mounting frame 35 having 34 and the upper end of the suspension 36 are fixed to each other. And the machine frame 1
In a state where the left and right working machines 19 are disposed on both left and right sides of the machine frame 1, the mounting plates 34 on the front and rear sides of the mounting frame 35 of the left and right working machines 19 are connected to the front and rear sides of the both side parts of the machine frame 1. The front and rear mounting plates 34 and the front and rear connecting plates 11, which are overlapped with each other on the left and right parts, are pivotally supported in a vertical direction by a rotation center shaft 37 in the front and rear direction. There is.

Further, the cover body 31 is fixedly suspended from an intermediate portion of the suspension body 36, and a substantially intermediate portion of the tiller shaft 23 is rotatably attached to a lower end portion of the suspension body 36 via a bearing body 38. It is suspended.
Further, the outer ends of the first output shaft 14 and the second output shaft 15 and the inner ends of the left and right drive shafts 25 are universal joints in the front and rear connecting plates 11 and the front and rear mounting plates 34. It is rotatably linked at 39. The universal joint 39 includes a U-shaped yoke 40 connected to the outer ends of the first output shaft 14 and the second output shaft 15, and a U-shape connected to the inner ends of the left and right drive shafts 25. Rotating left and right cross pins 42, which are positioned on the left and right sides of the rotation center shaft 37, and a linked body axially attached to the cross pins 42.
It is configured to be rotatably connected at 43.

Further, 44 is a left and right cylinder device, and the base end portion of the cylinder body 45 of the left and right cylinder device 44 is the machine frame 1
The left and right portions of the plate-like connecting member 46 projectingly provided on the rear side portion thereof are rotatably pivoted in the up-and-down direction by the support shafts 47 in the front-rear direction, and the left and right portions are attached to the tip end portion of the piston rod 48. Work machine
The support frame 33 projecting from the cover body 31 of 19 has a support shaft 49 in the front-back direction.
It is rotatably mounted on the shaft.

Further, balancers 50 are attached to lower left and right sides of the main frame 2, respectively, and engaging and disengaging portions 51 projecting from lower portions of the left and right balancers 50 are engaged with upper inner portions of the cover body 31 in the horizontal state. It is designed to hold this together.
Further, stoppers 52 for locking the upper inner ends of the cover body 31 are attached to the lower portions of both sides of the case body 6 of the mission 5 so as to be adjustable forward and backward.

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

When performing cultivating and crushing soil work, the three-point suspension mechanism of the tractor is connected to the three-point connecting portion of the machine frame 1, that is, the left and right lower links A.
The left and right lower pins 4 are connected to each other, the tip end portion of the top mast 8 is connected to the top link B of the tractor through the connecting pin 9, and the input shaft 12 has a universal joint on the power take-off shaft portion of the tractor. Connect via a power transmission shaft. Furthermore, the left and right cylinder devices 44
To extend the piston rod 48, and
Set 19 so that it extends horizontally in the horizontal direction.

Then, the tractor pulls and advances the machine, and the output from the power output shaft of the tractor causes the input shaft
When the 12 is rotated, the first output shaft 14 and the second output shaft 15 and the left and right work machines 19 are output by the output from the mission 5.
The rotary cultivated bodies 30 of the left and right working machines 19 are driven to rotate respectively via the drive shaft 25 and the endless chain 29, and the cultivated soil is sequentially cultivated with a wide working width in the left and right direction by the left and right rotary cultivated bodies 30. The cultivated soil work is carried out with high efficiency.

Next, in the case of cultivating soil along the ridge, when the cylinder device 44 of the working machine 19 located on the ridge side is actuated to further extend the piston rod 48, the piston rod 48 moves to the ridge side. The working machine 19 located is slightly rotated downwardly with respect to the machine frame 1 about the rotation center shaft 37 to set a low inclination to a predetermined inclination angle, and the rotary tiller 30 of the working machine 19 is cultivated. Similarly, the shaft 23 and each plowing claw 24 are set at the earth moving work position which is inclined at a low inclination angle.

Then, while the machine is towed and advanced by the tractor, the rotary tiller 30 in the state of descending inclination of the work implement 19 on the ridge side is rotationally driven, and each cultivating claw 24 of the rotary tiller 30 makes a ridge-edge approach. While the cultivated soil is slightly deeper and is sequentially cultivated while being cultivated, the cultivated soil near the ridge is soiled inward by the cultivating claws 24 of the rotary cultivating body 30 in the direction away from the ridge side. Soil is cultivated one after another.
Further, the cultivated soil is advanced while being successively cultivated by the respective cultivating claws 24 of the rotary cultivating body 30 that is horizontally set in the working machine 19 located on the side opposite to the ridge side.

Next, when traveling on the road or stored in a storage box, when the cylinder device 44 of one or both working machines 19 is operated and the piston rod 48 is largely contracted, one or both working machines are driven by the piston rod 48. Each of the rotary cultivators 30 of the working machine 19 is rotated about the respective rotation center shafts 37 as shown by the chain line in FIG. Is similarly pulled up and rotated to be set at the folding position.

Then, the working machine 19 having the rotary tiller 30 is, for example, pulled up to a position to be accommodated in the vehicle width of the tractor and the width in the left-right direction is greatly reduced, and therefore is preferable for road traveling and storage in the storage. After being transformed into a state, this machine is in a state where it can be easily stored in the storage box without the risk of traffic obstacles when driving on the road.

Further, when the working machine 19 is pulled up and rotated by the cylinder device 44, the universal joint 39 on the side of the working machine 19 which is pulled up and rotated, as shown in FIG.
When the cross pin 42 positioned inside the 37 is bent and rotated upward, and the cross pin 42 positioned outside the rotation center shaft 37 is pulled up to a predetermined height position, the interlocking body 43 is passed through. The drive shaft 25 is slightly slid to the mission 5 side, and the sliding of the drive shaft 25 causes a third movement.
As shown in FIGS. 4 and 5, the first output shaft 14 and / or the second output shaft 15 are slightly slid into the mission 5 via the interlocking member 43, and The second output shaft 15 is further spline-fitted. Therefore, the universal joint 39 does not interfere with the pulling rotation of the working machine 19 around the rotation center shaft 37.
Following the pulling and turning movement of 19, it is smoothly bent and turned upward.

(Effects of the Invention) According to the present invention, the machine frame has the connecting frames fixed to both side portions in the left-right direction, and the connecting bodies are provided on the rear side so that the left and right working machines can rotate the rotary tillers freely. It has a supporting mounting frame, the mounting frame facing the connecting frame of the machine frame is fixed to the inner end of the mounting frame, and the mounting frame is provided with a cover body covering the upper part of the rotary tiller. , A support frame is provided at a position facing the connecting body of the machine frame, and the mounting frames of the left and right work machines can be freely rotated on the left and right connecting frames of the machine frame by a rotation center axis in the front-rear direction. And the base end portions of the cylinder devices are rotatably supported on the left and right portions of the connecting body of the machine frame, and the tip ends of the piston rods of the left and right cylinder devices are attached to the left and right working machines. Freely rotatable support frame Since it was rotatably supported on the left and right, the left and right cylinders were rotated around the central axis of rotation to move the left and right work machines up and down to set the rotary cultivator to the horizontal cultivated soil position. The working width of the rotary cultivator can be expanded by the working machine to surely improve the working efficiency of the cultivating and crushing soil work, and the left and right cylinder devices can be used to move the left and right working machines around the central axis of rotation. By rotating it downwardly and setting the rotary cultivated body to the earth shifting position inclining downward from the horizontal cultivated soil position, the cultivated soil is cultivated while cultivating the soil near the ridge by this descending inclined rotary cultivator. It is possible to surely perform earth-moving work in which soil is grounded inward away from the shore, and it is possible to sufficiently contribute to leveling work in the field. Work of By rotating the machine upward to set the rotary cultivated body to the folding position that pulls the rotary cultivated body upward from the horizontal cultivated soil position, it is possible to reliably extend the work machine outward and forward and backward. Since it can be removed, and the overall size can be reduced, it is possible to eliminate the risk of traffic obstacles and to easily store in a storage cabinet with a narrow frontage. Therefore, it is possible to provide a tilling implement that is excellent in workability, transportation, and storage.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention. FIG. 1 is a plan view of a tilling implement, FIG. 2 is a sectional view taken along line a-a of the same as above, and FIG. 3 is same as above. FIG. 4 is a plan view of the mission, and FIG. 4 is an operation explanatory view of the same working machine. 1 ... machine frame, 5 ... mission, 11 ... connecting frame,
12 …… Input shaft, 19 …… Working machine, 20 …… Mounting frame, 30
...... Rotary tiller, 31 …… Cover, 33 …… Support frame,
35 …… Mounting frame, 37 …… Rotating central shaft, 44 …… Cylinder device, 46 …… Coupling body, 48 …… Piston rod.

Claims (1)

[Scope of utility model registration request] 1. A machine frame having a mission having an input shaft connected to a power take-off shaft of a tractor and rotatably protruding forward and a three-point connecting portion connected to a three-point suspension mechanism of the tractor, and this machine. And a left and right working machine rotatably provided with rotary cultivators rotatably driven by the output from the mission, which are arranged on both left and right sides of the frame. While fixing the connecting frame, the connecting body is provided on the rear side thereof so as to project, and the left and right working machines have a mounting frame that rotatably supports the rotary tiller, and the inner frame portion of the mounting frame A mounting frame that is opposed to the connecting frame of the machine frame is fixed, a cover body that covers the upper part of the rotary tiller is provided on the mounting frame, and a supporting frame is projected at a position facing the connecting frame of the machine frame. And before The mounting frames of the left and right work machines are rotatably supported by the left and right connecting frames of the machine frame about the center of rotation in the front-rear direction, and the base end of the cylinder device is attached to the left and right parts of the connecting body of the machine frame. Each of the parts is rotatably supported, and the support frames of the left and right work machines are rotatably supported by the tip ends of the piston rods of the left and right cylinder devices. By rotating the left and right work machines in the vertical direction about the rotation center axis, the rotary cultivated body is rotated and set to the earth pulling position inclining downward from the horizontal cultivating soil position and the folding position pulling upward. A characteristic tilling machine.