JPH0434646Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a tillage device, which is connected to a tractor and is linked to a tractor for tilling and crushing soil in a field.

(Prior Art) Conventionally, this type of tillage device includes, for example,
As described in Japanese Unexamined Patent Publication No. 54-135105, a rotary work machine is connected to the top link and left and right lower links of the tractor, and the left and right lower links are raised and lowered on the left and right sides of the tractor. A cylinder is provided to change the tilt angle of the rotary relative to the ground in the left and right direction of the rotary work machine, and the operation of the left and right cylinders is automatically controlled to convert the rotary to a horizontal position by detecting the tilt angle of the rotary relative to the ground in the left and right direction. A configuration equipped with a control device is known.

(Problem to be solved by the invention) In the structure described in the above publication, the rotary work machine remains in a horizontal position and cannot move in the vertical direction when a certain plowing depth is set for the top link and the left and right lower links. Because it cannot swing, the rotary cannot adapt to and follow changes in the vertical direction on the working surface of the field, making tilling work uncertain. This is not limited to cases where the rotary slopes only in the vertical direction, so on a work surface that slopes horizontally while changing vertically, the followability of the rotary may be insufficient and the tilling work may become uncertain. Since this requires a control device that automatically corrects the rotary to a horizontal position, the structure becomes complicated and expensive.

Therefore, the present invention was developed in view of the above points, and it supports a rotary work body with a simple structure so as to be able to swing vertically and horizontally, and allows the rotary work body to fully adapt to changes in the working surface of the field. It is an object of the present invention to provide a tillage device that can perform tillage work that follows the working surface of the ground, thereby ensuring reliable tillage and crushing work.

[Structure of the idea]

(Means for Solving the Problems) The tillage device of the present invention includes a coupling mechanism including a transmission having a coupling part for coupling to a tractor and an input shaft for inputting power from the tractor, and a coupling mechanism for the coupling mechanism. An intermediate swing mechanism is connected to the support frame so as to be able to swing vertically through a swing hole and a lock pin inserted through the swing hole, and a swing hole is provided at the rear of the intermediate swing mechanism. The working mechanism includes a rotary working body which is connected to the rotary working body so as to be swingable in the left and right directions via a lock pin inserted through the rotary working body and which is rotatably driven by the power output from the transmission.

In addition, in the above-mentioned tilling device, the connection mechanism is
The intermediate swing mechanism is configured to be variably adjustable so as to be able to shift in the left and right directions.

(Function) In the tillage device of the present invention, the connecting portion of the connecting mechanism is connected to the tractor, and the input shaft of the transmission is interlocked and connected to the output shaft portion of the tractor.

Then, while the machine is towed by a tractor, the rotary work body of the work mechanism is rotated by the power input from the tractor to the transmission, and the field is tilled and crushed by this rotary work body. In this case, the working mechanism is moved vertically within the range of the support frame and the swinging hole for the lock pin in the intermediate swinging mechanism, and the swinging hole for the locking pin in the intermediate swinging mechanism and the working mechanism, depending on the traveling conditions and working conditions of the field. The rotary working body of this working mechanism reliably plows and crushes the soil by the rotary working body of this working mechanism.

Further, by variably adjusting the interlocking mechanism and changing the position of the intermediate swing mechanism in the left-right direction, the rotary work body of the work mechanism can be easily set to an appropriate position where plowing work is required.

(Example) Hereinafter, an example of the present invention will be described based on the accompanying drawings.

In the figure, reference numeral 1 denotes a connecting mechanism that is connected to a tractor (not shown), and this connecting mechanism 1 has a connecting frame 2 that extends in the left-right direction and has a U-shaped cross section.
A pair of left and right rotating arms 5 extending in the front and back direction via vertical shafts 3 and 4 at both ends of the connecting frame 2,
The front end of 6 is attached so as to be rotatable in the horizontal direction. Furthermore, U-shaped holding fittings 7 and 8 are integrally fixed to the rear ends of the pair of rotating arms 5 and 6. One end and a midway portion of a hollow pipe-shaped support frame 9, which is disposed parallel to the connecting frame 2 via vertical axes 10 and 11, are attached to 7 and 8 so as to be rotatable in the horizontal direction. Further, the base end of a hydraulic cylinder 12 is rotatably attached to the vertical shaft 11 of one of the holding fittings 8, and the tip of the piston rod 13 of this hydraulic cylinder 12 is located diagonally to the vertical shaft 11. The above connection frame 2
It is rotatably attached to one vertical shaft 3 of the.
A parallelogram frame 14 is configured to be variable by the connecting frame 2, the left and right rotating arms 5 and 6, and the support frame 9.
4 is the piston rod 1 of the hydraulic cylinder 12;
3, the support frame 9 is adjusted to be displaced in the left-right direction, and the set position is maintained.

Next, a support plate 15 is integrally attached to the lower part of the connection frame 2, and a transmission 17 is detachably and reversibly attached to one side of the support plate 15 by a plurality of bolts and nuts 16. installed. This transmission 17 is
An input shaft 19 is rotatably mounted horizontally in the front-rear direction of the case body 18, and left and right bevel gears 2 are mounted on both sides of a bevel gear 20 fixed to one side of the input shaft 19.
1 and 22 are meshed, and this left and right bevel gear 2
The output shafts 23 and 24 of 1 and 22 are connected to the case body 18.
They are rotatably protruded outward in opposite directions.

Further, a frame body 25 is attached to the other side of the support plate 15, a hydraulic package 26 is attached to this frame body 25, and a rotation shaft 27 of this hydraulic package 26 is attached.
A belt 30 is connected between a pulley 28 attached to the transmission 17 and a pulley 29 fixed to one output shaft 23 of the transmission 17 by spline fitting.
is suspended. In addition, the hydraulic package 26
The hydraulic cylinder 12 is connected to the hydraulic cylinder 12 via a valve 31, and the valve 31 is fixed to a connecting plate 33 having a connecting portion 32 erected on the connecting frame 2. Further, connecting pins 34 as connecting portions are provided protruding from both sides of the connecting frame 2 and the left and right portions thereof.

Next, a pair of left and right locking holes 36, 37 are bored at intervals in the protruding portion 35 of the support frame 9, which protrudes outward from the vertical axis 11 in the front-rear direction, and the left and right locking holes 36, 37 are spaced apart from each other. A lock pin 38 is removably inserted into one of the holes 36, 37.

Reference numeral 39 denotes an intermediate swinging mechanism, and the intermediate swinging mechanism 39 is a hollow pipe-shaped first swinging member having a cross-sectional shape that can be inserted into the protrusion 35 of the support frame 9 so as to be freely retractable and rotatable. frame 40;
A hollow pipe-shaped second swing frame 41 is provided perpendicularly to the first swing frame 40. A communicating locking hole 42, which communicates with the one locking hole 36 of the protrusion 35 and into which the lock pin 38 is inserted, is formed on one side of the first swing frame 40 and penetrates in the vertical and front-back directions. A locking hole 37 is formed inside the communicating locking hole 42 and communicates with the other locking hole 37 and into which the lock pin 38 is inserted.
A swing hole 43 in the form of a long groove with a larger diameter is formed to penetrate in the front-rear direction. A locking hole 44 is formed vertically through the other side of the first swing frame 40, and a lock pin 45 is removably inserted into the locking hole 44. A sliding hole 46 is formed to penetrate through the first swing frame 40 in the front-rear direction orthogonal to the sliding hole 45 . Further, a front connecting portion 48 is formed at the front end of the second swing frame 41 and is inserted into the sliding hole 46 via a locking step portion 47 so as to be slidable in the left and right direction. A locking pin 49 is inserted into a protruding end portion that protrudes forward from the sliding hole 46 . Also, the locking hole 44 is located in this front connecting portion 48.
A horizontal groove-shaped swing hole 50 having a larger diameter than the locking hole 44 and communicating with the lock pin 45 is formed in the vertical direction, and the locking hole 50 is formed in the left and right direction perpendicular to the swing hole 50. A communication locking hole 51 for locking, which communicates with the hole 44 and into which the lock pin 45 is inserted, is formed to penetrate in the left-right direction.
Furthermore, a rear connecting portion 52 that protrudes rearward is formed at the rear end of the second swing frame 41 .

Further, 53 is a working mechanism, and this working mechanism 53 is
It has a main frame 54 extending leftward, and this main frame 54
A rotary work body 56 is rotatably suspended horizontally between left and right side plates 55 provided oppositely at both ends of the rotary work body 56 . This rotary work body 56 has a tilling shaft 58 rotatably mounted between bearings 57 attached to the left and right side plates 55, and tilling claws are mounted on flanges 59 provided at predetermined intervals in the axial direction of the tilling shaft 58. 60 projecting radially, and a spline shaft portion 61 at one end of the tilling shaft 58 projects into a cover 62 formed on the outer side of the one side plate 55 . Further, a cover body 63 that covers the upper part of the rotary work body 56 is attached to the upper part between the left and right side plates 55, and a flat plate 64 made of rubber or the like is attached to the rear end of this cover body 63. A tail wheel 66 is attached to the rear end of the left and right side plates 55 via an arm 65.
is installed so that it can be adjusted vertically. The rear connecting portion 52 of the second swing frame 41 is attached to the intermediate portion of the main frame 54, and the spline shaft portion 61 of the tilling shaft 58 and the output shafts 23, 24 of the transmission 17 are connected to each other. A hydraulic universal joint 67 is interlocked with one of the two.

In this structure, the connecting portion 32 and the connecting pin 34 of the connecting frame 2 are connected to the suspension mechanism of the tractor, and the input shaft 19 of the transmission 17 is connected to the output shaft of the tractor using the universal joint 67. Interlocking and connecting via. In addition, the hydraulic cylinder 12 is operated, and the parallelogram frame 14 is variably adjusted by the expansion and contraction of the piston rod 13, thereby adjusting and setting the working mechanism 53 connected to the support frame 9 via the intermediate swing mechanism 39 to the working position in the field. .

When the machine is towed by a tractor and the rotary work body 56 of the work mechanism 53 is rotated by the power input from the tractor to the transmission 17, the rotary work body 56 turns the field into plowed and crushed soil. However, in this case, the working mechanism 53 is configured to rotate the swing hole 43 for the lock pin 38 in the support frame 9 and the intermediate swing mechanism 39, and the swing hole 43 for the lock pin 38 in the intermediate swing mechanism 39 and the work mechanism 53, depending on the traveling conditions and work conditions of the field. The working mechanism 53 swings vertically and horizontally within the range of the swinging hole 50 relative to the lock pin 45 and follows changes in the working surface accordingly.
The field is reliably tilled and crushed by the rotary work body 56.

Next, when maintaining and inspecting the working mechanism 53, the lock pin 38 of the support frame 9 is pulled out from the other locking hole 37, and the protrusion 35 of the support frame 9 is inserted into the protrusion 35. First swing frame 40 of inserted intermediate swing mechanism 39
, the working mechanism 53 is lifted upward and rotated approximately 90 degrees. The locking pin 38 of the locking hole 42 of the first swing frame 40 communicating with the locking hole 36 is passed through from one locking hole 36 to lock their mutual rotation. As a result, the working mechanism 53 is turned upward and the rotary working body 56 is set in a state where it can be easily seen, so that maintenance and inspection of the inside of the rotary working body 56 and the cover plate 63 becomes easy.

Further, when the working mechanism 53 is set in an inclined state and it is necessary to lock its swinging, the locking pin 45 is pulled out, the second swinging frame 41 is rotated with respect to the first swinging frame 40, The locking pin 45 is again inserted from the locking hole 44 into the communication locking hole 51 communicating with the locking hole 44 to lock their mutual rotation.

If it is necessary to drive the locking work body 56 in the reverse direction, remove the transmission 17 from the support plate 15 of the connection frame 2, turn the input shaft 19 of the transmission 17 back and forth, and then drive the transmission 17 in the reverse direction. 17 is attached to the support plate 15 again. By connecting a universal joint 67 between the output shaft 23 and the spline shaft portion 61 of the tilling shaft 58, the rotary work body 56
will be driven in reverse. Further, it is preferable that the transmission 17 is mounted so as to be rotatably adjustable up and down, so that the angle of its input shaft can be adjusted.

[Effect of idea]

According to the present invention, the rotary work body has a work mechanism equipped with the rotary work body connected to the support frame of the coupling mechanism via the intermediate swing mechanism so as to be able to freely swing in the vertical and horizontal directions. The rotary work body can fully adapt to the working conditions of the field, that is, changes in the vertical and horizontal directions, automatically change its posture, and follow the working surface to perform tillage and crushing work reliably. The support frame and the intermediate swinging mechanism, and the intermediate swinging mechanism and the working mechanism are swingably connected to each other by a swinging hole and a lock pin inserted through the swinging hole at each connecting part, so the structure is simple and easy to manufacture. The rotary work body can easily follow changes in the work surface compared to a control mechanism that automatically corrects the rotary work body so that it does not tilt in the left and right directions, and can reduce costs. .

Further, by configuring the connecting mechanism to be variably adjustable, the working mechanism can be grounded at an appropriate working position in the left-right direction.

[Brief explanation of drawings]

Fig. 1 is a plan view of the tilling device, Fig. 2 is a perspective view of the above connection mechanism, Fig. 3 is a sectional view of the above transmission, Fig. 4 is a perspective view of the above working mechanism, and Fig. 5
The figure is a cross-sectional view of the same section from line a to a, and FIG.
FIG. 7 is a cross-sectional view of the section along line b, and FIG. 7 is a cross-sectional view of the section along line c to c. 1... Connection mechanism, 9... Support frame, 17...
...Transmission, 19...Input shaft, 32,
34... Connection portion, 38, 45... Lock pin, 3
9... Intermediate rocking mechanism, 43, 50... Rocking hole, 5
3... Working mechanism, 56... Rotary working body, 63
...Cover body.

Claims (1)

[Claims for Utility Model Registration] (1) A coupling mechanism that has a transmission that has a coupling part that connects to the tractor and has an input shaft that inputs power from the tractor, and a swing hole in the support frame of this coupling mechanism. and an intermediate swing mechanism connected to the intermediate swing mechanism so as to be able to swing vertically through a lock pin inserted through the swing hole, and a swing hole connected to the rear part of the intermediate swing mechanism and a lock pin inserted through the swing hole A working mechanism comprising a rotary working body which is connected to the rotary working body so as to be swingable in the left and right directions and is rotationally driven by the power output from the transmission. (2) The tilling device according to claim 1, wherein the coupling mechanism is configured to be variably adjustable so that the intermediate rocking mechanism can be deviated in the left-right direction.