JPH0449854Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to an agricultural machine, for example, a soil crusher that performs plowing work after plowing work.

(Prior Art) Conventionally, puddling work has been carried out using a puddling harrow after tilling by the rotary working body of a rotary tiller. A rotating shaft is horizontally and rotatably suspended between the opposing chain cases and the lower ends of the brackets, which are arranged on both the left and right sides, and a large number of puddling claws are arranged radially around the circumferential side of this rotating shaft in the axial direction. A structure is adopted in which connecting arms are provided on the left and right sides of the main body frame and are connected to the tractor.

(Problems to be solved by the invention) According to the above-mentioned structure, there are no particular problems in puddling work in the relatively flat area inward from the ridge edge in the field after tilling, but if the ridge edge is in the remaining tilled area or If the soil is pushed up during tilling and is piled up high, the entire plowing harrow will be tilted and the rotating shaft with many plowing claws will be tilted, so the soil will be piled up high at the edge of the ridge. As puddling work is carried out under such conditions, soil tends to be pushed into the ridges, causing the ridge edges to become higher and higher, and the opposite side of the ridges to be dug up too deeply.

Therefore, the present invention was developed in view of these points, and it is possible to adjust the inclination of the soil work body such as the plowing work body in the left and right direction. The purpose of this invention is to provide an agricultural machine that can perform soil work while moving inward on the opposite side.

[Structure of the idea]

(Means for Solving the Problems) The agricultural machine of the present invention has connecting arms protruding from the left and right sides of the main body frame on which the earth-facing work body is provided, facing toward the front. An extension arm having a hitch fitting is provided so as to be vertically rotatable and fixable, and a cylinder device for remote control is removably attached between the front and rear extension arms on both sides and the connecting arm. When the left and right cylinder devices are attached, at least one of the extension arms can be vertically rotated by the cylinder devices.

(Function) The agricultural machine of the present invention connects and tows the left and right hitch fittings to, for example, the suspension mechanism of a tractor, and operates the earth-moving body using the power input from the tractor to remove parts other than the ridge. When performing soil work such as plowing, and remotely operating the cylinder device on the ridge side, the extension arm on the ridge side moves up and down with respect to the connecting arm. , the entire agricultural machine is tilted toward the ridge at a predetermined tilt angle.

Then, in this state, when the machine is towed along the ridge by a tractor, the soil that has piled up at the ridge is moved inward by the earth-moving body, and the earth-moving work is performed.

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

In the figure, reference numeral 1 denotes a main frame as a main body frame, and a chain case 2 and a bracket (not shown) as a main body frame are connected to opposite left and right ends of the main frame 1. A puddling work body 3 as a soil work body is rotatably provided between the lower end portions of the . This soil work body 3 is connected to the chain case 2.
The rotating shaft 4 is rotatably suspended horizontally between the lower ends of the brackets, and a large number of auxiliary scratching claws 5 project radially from the circumferential side of the rotating shaft 4 in the axial direction.

In addition, left and right connecting arms 6 are provided at both left and right ends of the main frame 1 and protrude toward the front, facing each other.
A support frame 7 is horizontally suspended between the ends of the left and right connecting arms 6, and connecting pieces 8 projecting forward from the chain case 2 and the bracket are fixed to both ends of the support frame 7. Furthermore, a mounting hole 10 into which the rotation center shaft 9 is removably mounted is formed at the distal ends of the left and right connecting arms 6, and locking holes 11 are formed at the upper and lower portions of this mounting hole 10.

Reference numeral 12 denotes left and right extension arms rotatably and fixedly connected to the distal ends of the left and right connecting arms 6, and the left and right extension arms 12 have the mounting holes 10 and 10 of the left and right connecting arms 6 at their base ends, respectively. Communication holes 13 communicating with the upper and lower locking holes 11 are formed on the upper and lower sides, and hitch fittings 14 are attached to the tips of the left and right extension arms 12. This hitch metal fitting 14 has an inverted U-shaped locking device 15 with a downward opening fixed to the tips of the left and right extension arms 12, and supports a mounting piece 16 protruding from the top of the locking device 15. A substantially C-shaped lock arm 1 is attached to the shaft 17.
8 is rotatably pivoted, and this lock arm 18
The locking part 19 at the tip of the locking tool 15 is connected to the guide groove 20 of the locking tool 15.
The lock arm 18 is protruded from the locking member 15 so as to be able to move forward and backward into the locking tool 15, and is energized by a coil spring (not shown) wound around the support shaft 17.
The locking portion 19 is designed to project into the locking tool 15 at all times, and an operating lever 21 is provided projecting from the upper portion of the lock arm 18.

Reference numeral 22 denotes a cylinder device consisting of power cylinders for remote control disposed on the left and right sides, and this cylinder device 22 has a rear mounting piece 25 whose upper part is rotated via a support shaft 24 at the base end of the main body 23. The lower part of the mounting piece 25 is connected to the middle of the connecting arm 6 with a plurality of bolts 26 so as to be freely movable. Further, the upper part of a front mounting piece 29 is rotatably attached to the tip of a piston rod 27 that can move forward and backward with respect to the main body 23 via a support shaft 28, and the lower part of this mounting piece 29 is connected to the extension arm 12. It is designed to be detachably connected with a plurality of bolts 30 in the middle.

Next, an input shaft 3 is attached to the middle part of the main frame 1.
A transmission 32 is provided which protrudes rotatably with the transmission 1 facing forward, and a mast 34 is provided protruding forward from the upper part of a case body 33 that houses the transmission 32. A U-shaped hitch fitting 35 with a downward opening is provided.
Also, a pair of support pieces 36 are provided in the middle of this mast 34.
are provided facing each other and protruding upward, and this pair of supporting pieces 3
A guide body 38 having a guide hole 37 is rotatably attached via a support shaft 39 between the upper ends of the guide body 38 . Further, a pair of mounting pieces 4 are provided on the upper part of the pair of support pieces 36.
0 are fixed in parallel to each other, and a plurality of locking rods 41 are horizontally suspended at predetermined intervals between the front and rear portions of the pair of support pieces 36. In addition, the mast 3
A support frame 42 is provided protruding near the tip of the support frame 4, and a leg rod 44 is installed in a hollow pipe-shaped guide body 43 of this support frame 42.
The lower part of the leg rod 44 is inserted so as to be movable forward and backward, and is fixed with a locking screw 45 so as to be freely adjustable. installed.

Also, a cover body 49 that covers the upper part of the earth work body 3 is provided between the chain case 2 and the bracket.
is fixed to the rear end of the cover body 49 via a rubber plate 50 to the upper end of a ground leveling plate 51, and a rake 53 is attached to the lower end of this leveling plate 51 via a hinge 52 so as to be freely rotatable in the vertical direction. It is attached to the shaft. Further, the lower ends of suspension rods 54 are rotatably attached to both left and right ends of the ground leveling plate 51, and these left and right suspension rods 5
4 is inserted into a guide 56 of a suspension arm 55 that protrudes rearward from both left and right sides of the main frame 1 so as to be vertically movable, and a coil is attached to the suspension rod 54 between this guide 56 and a stopper 57. A spring 58 is wound. In addition, the rake 5
3, the lower end of an adjustment rod 59 is rotatably attached to the middle part of the adjustment rod 59, and the upper end of the adjustment rod 59 is rotatably attached between a pair of rotating arms 60 via a support shaft 61. The lower end portions of the pair of rotating arms 60 are pivotally attached to protrusions 62 protruding from the left and right rear portions of the case body 33 via a support shaft 63 so as to be freely rotatable in the vertical direction. Further, the lower end of a retractable rod 64 is rotatably attached to the upper end of the adjustment rod 59 via a support shaft 65 in the vertical direction, and the upper part of the retractable rod 64 is inserted into the guide hole 37 of the guide body 38. A hook 67 is connected to the upper end of the reciprocating rod 64 so as to be freely advanced and retractable. Further, an operating lever 68 is pivotally attached to one end of the connecting rod 66 and is rotatably attached to and disengaging from the hook 47, and the coil spring 48 is stretched around the operating lever 68.

Next, the operation of the above structure will be explained.

The left and right hitch fittings 14 and the upper hitch fitting 35 of the machine are connected to the three-point suspension mechanism of the tractor, and the input shaft 31 of the machine is connected to the power output shaft of the tractor via a power transmission shaft.

When working on the ridge, remove the plurality of upper and lower bolts and nuts 69 that connect the left and right extension arms 12 to the tips of the left and right connecting arms 6, and connect the mounting holes 10 and the The rotation center shaft 9 is inserted into the locking hole 13 of the section, and these are rotatably connected to each other. In addition, in the left and right cylinder devices 22, the rear mounting pieces 25 are connected to the middle of the left and right connecting arms 6 with a plurality of bolts 26, and the front mounting pieces 29 are extended in the left and right directions. It is connected to the middle of the arm 12 with a plurality of bolts 30. Then, when the tractor operator remotely operates the cylinder device 22 on the ridge side to extend the piston rod 27, the extension arm 12 on the ridge side descends about the pivot axis 9 relative to the connecting arm 6. As the machine is rotated, the entire machine is tilted, so that the machine is tilted at a predetermined tilt angle by the operation of the cylinder device 22. This angle of inclination is set steplessly according to the height of the mounded soil at the edge of the ridge.

Next, in this state, when the machine is towed along the ridge by a tractor and the purge work body 3 is rotated by the power input from the tractor to the input shaft 31, this purge work body 3, the plowing work is carried out while the mounded soil at the edge of the ridge is moved inward on the opposite side from the edge of the ridge. In this case, the operating lever 68 is moved laterally against the coil spring 48, and the operating lever 68 is removed from the hook 47, and the operating lever 68 is used to rotate the hook 67 via the connecting rod 66. Locking rod 4
At the same time, the rake 53 is rotated around the hinge 52 via the adjusting rod 59 by moving the advancing/retracting rod 64 forward and backward, and the rake 53 is set horizontally or at a predetermined inclination angle, and the earth is moved large. In this case, the rake 53 is set to a vertical position or an inclined position close to vertical, and the hook 67 is again locked to the locking rod 41 at a predetermined position, and the operating lever 68 is engaged to the hook 47. As a result, the rake 53 is held in the set state, and the soil at the edge of the ridge is moved inward and leveled.

Next, in the above embodiment, the case where the cylinder device 22 is installed between the connecting arm 6 and the extension arm 12 during plowing work at the edge of a ridge has been explained.
However, the cylinder device 22 and the rotation center shaft 9 are installed from the beginning of the plowing work, and the upper and lower bolts and nuts 69 connecting the connecting arm 6 and the extension arm 12 are removed during the plowing work at the edge of the ridge. The extension arm 12 may be moved up and down by the cylinder device 22.

[Effect of idea]

According to the present invention, by operating the cylinder device when installing the cylinder device, it is possible to adjust the inclination of the soil work body such as the puddling work body in the left and right direction. By setting the inclination according to the height of the soil that has been raised, it is possible to move the soil at the edge of the ridge inward on the opposite side of the ridge and perform soil work smoothly, and the slope of the soil work body can be adjusted. The cylinder device allows for stepless adjustments to the height of the heaped soil, and since this cylinder device operates remotely, there is no need to get off the vehicle during adjustment, making the adjustment easy. be.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a side view of the agricultural machine, Fig. 2 is a rear view of the same with a part omitted, and Fig. 3 is a perspective view of the rake adjustment mechanism of the above.
FIG. 4 is a side view of the tilt adjustment mechanism. 1, 2...Main frame, 3...Earth work body,
6...Connection arm, 9...Rotation center axis, 12...
Extension arm, 14... hitch fitting, 22... cylinder device.

Claims (1)

[Scope of utility model registration request] Connecting arms are provided on both left and right sides of the main body frame on which the earth work body is installed, and protrude toward the front of the main frame, and extension arms with hitch fittings are attached to these left and right connecting arms so that they can be rotated in the vertical direction and fixed freely. A cylinder device for remote control is removably installed between the front and rear extension arms on both sides and the connecting arm, and when the cylinder devices on both the left and right sides are installed, the cylinder device is used to extend at least one of the extension arms. An agricultural machine characterized by an arm that can freely rotate in the vertical direction.