JPH0441774Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a cover device for an agricultural working machine, and more particularly to the structure of a cover that covers the upper part of a rotary working body.

(Prior Art) Conventionally, as a cover device for this type of agricultural machine, a rotary work body is provided rotatably in the up cut direction, and the rotary work body is rotatably mounted in the up cut direction. A crushing soil cover is arranged and fixed at an upper part of the work body at a distance greater than the rotation locus of the rotary work body, and an arcuately curved screen is interposed between the rotary work body and the crushing cover, and a large number of the screens are arranged and fixed. A structure is known in which the tip end portions of each of the rod-like members are pivotally supported at the lower front end of the crushed earth cover, and the rear end portions of each of the many rod-like members are fastened in a finely adjustable manner.

Then, large clods are guided downward by the screen, and small clods are passed between the rod-shaped members of the screen and released backwards, making the lower layer coarse and the upper layer fine and dense. In addition to forming a tilled soil layer, each rod-shaped member guides the grass straw downward.

(Problems to be solved by the invention) In the structure described in the above publication, the numerous rod-like members that constitute the screen do not have elasticity, and moreover, the tip and rear ends of each are pivotally connected. , the movement of many rod-shaped members in the vertical and horizontal directions is restricted, and for example, in fields with high humidity or in fields with a lot of debris such as weeds, soil is likely to adhere to the inside of the crushed soil cover. In addition, there is the problem that dirt, weeds, and other impurities tend to get caught between the rod-like members, resulting in clogging, and it may not be possible to form a cultivated soil layer with a coarse lower layer and a finer and denser upper layer. be.

Therefore, the present invention has been developed in view of the above-mentioned points.The present invention has been developed in view of the above-mentioned points. The operation prevents soil from adhering to the cover body, prevents clogging between the elastic rod-shaped members, and reliably handles large and small soil clods, creating a cultivated soil layer with a coarse bottom layer and a dense top layer. It is an object of the present invention to provide a cover device for an agricultural working machine that can be easily formed.

[Structure of the idea]

(Means for Solving the Problems) A cover device for an agricultural working machine according to the present invention includes a rotary work body 3 which is rotatably driven in the upcut direction and has a large number of tilling claws 5 radially protruding in the axial direction of a tilling shaft 4. and a cover body 8 which is disposed and fixed on the upper part of this rotary work body 3 and formed in a substantially arc shape following the rotation locus of each tilling claw 5 of the rotary tillage body 3, and this cover body 8 and the above rotary work A large number of elastic rod-shaped members 1 are interposed between the rotary tiller body 3 and curved in a substantially arc shape following the rotation locus of each tilling claw 5 of the rotary tiller body 3.
2 are arranged in parallel,
A large number of elastic rod-shaped members 12 of the screen 10
Each of the tips is fixed to the front end of the cover body 8, and the rear end of each is set as a free end facing the rear upper part of the rotary work body 3.

(Function) In the cover device of the agricultural machine of the present invention, the rotary work body 3 is driven to rotate in the upcut direction to till and crush the soil in the field, and this tilled soil is guided by the screen 10 and the cover body 8 and moved backward. It is guided and released.

In this case, a screen 10 consisting of a large number of elastic rod-shaped members 12 formed in a substantially arc shape following the rotation locus of each tilling claw 5 of the rotary work body 3 is disposed inside the cover body 8. screen 1
The large number of elastic rod-shaped members 12 prevent tilled soil from adhering to the cover body 8, and
Large clods of earth are induced to fall downward, while clods of earth and thin soil smaller than the gaps between the elastic rod-shaped members 12 pass through the gaps and are thrown backward.

At this time, each elastic rod-like member 12 is elastically deformed and oscillated in the vertical and horizontal directions by the tilled soil from the rotary work body 3, thereby creating a clod of soil between each elastic rod-like member 12. This prevents weeds from becoming trapped and clogging. Therefore, a cultivated soil layer with a coarse lower layer and a dense upper layer is formed.

(Example) Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.

In the figure, reference numeral 1 denotes a machine frame, and the upper parts of a chain case 2 and a bracket (not shown) facing both ends of the machine frame 1 in the left and right direction are respectively fixed. A rotary work body 3 is rotatably provided. This rotary work body 3 includes a tilling shaft 4 which is rotatably suspended horizontally between the chain case 2 and the lower end of the bracket, and a large number of tilling claws protruding radially from the circumferential side of the tilling shaft 4 in the axial direction. It consists of 5 parts. Further, a transmission 7 having an input shaft 6 is provided in the middle of the machine frame 1, and the tilling shaft 4 of the rotary work body 3 is connected to the transmission 7 via an output shaft and a linkage medium such as a chain in the chain case 2. are interlocked and connected, and this rotary work body 3 is adapted to be rotationally driven in the up-cut direction.

Next, a cover body 8 covering the upper part of the rotary work body 3 is fixed between the chain case 2 and the bracket. This cover body 8 is formed with a guide plate portion 9 formed in a substantially arc shape following the rotation locus of each tilling claw 5 of the rotary work body 3.

Further, a screen 10 is interposed between the cover body 8 and the rotary work body 3. This screen 10 has a substrate 11 that is long in the left and right direction and has approximately the same length as the width of the cover body 8, and the tilling claws of the rotary work body 3 are arranged at predetermined intervals in the length direction of this substrate 11. The tips of a large number of elastic rod-like members 12 curved in a substantially circular arc shape following the rotation locus of 5 are integrally arranged in parallel and fixedly formed, and the rear ends of each of the large number of elastic rod-like members 12 are The plurality of elastic rod-shaped members 12 whose ends are respectively opposed to the rear upper part of the rotary work body 3, and
The rear end portions of the two are arranged in parallel as free end portions 19, respectively.

Furthermore, communication holes 15 are bored at both ends and in the middle of the base plate 11 to communicate with through holes 14 of bosses 13 protruding from both sides and in the middle of the inner front end of the cover body 8. A bolt 16 is inserted from each communication hole 15 into the through hole 14 of each boss 13, and a nut 18 is screwed onto the bolt 16 via a washer 17. As a result, the screen 10 extends from the inside of the front end of the cover body 8 to the rear lower part, and the free end 19 of the rear end of each elastic rod-shaped member 12 faces the rear upper part of the rotary work body 3. Predetermined spaces a and b are formed between the screen 10, the cover body 8, and the rotary work body 3.

Further, the upper part of a flat plate 20 is rotatably attached to the rear end of the cover body 8 via a hinge 21, and this flat plate 20 is attached to the rear end of the cover body 8 via a lifting rod 22 and a coil spring 23. It is elastically supported by a support rod 24 that protrudes rearward so as to be able to move up and down.

Furthermore, connecting frames 25 are provided at the front portions of both sides of the machine frame 1.
A connecting portion 26 is formed at the upper part and lower portions of both sides of the connecting frame 25, and a ground ring 27 is attached to both sides of the connecting frame 25 so as to be height adjustable.

In the device configured in this way, each connecting portion 26 of the connecting frame 25 is connected to the three-point suspension mechanism of the tractor, and the input shaft 6 of the transmission 7 is connected to the output shaft of the tractor using a power transmission shaft such as a universal joint. Interlock and connect via. Further, the height of the grounding wheels 27 on both sides is adjusted according to the working condition and set at an appropriate position.

Next, the agricultural machine is pulled by the tractor, and the rotary work body 3 is interlocked with the power input from the output shaft and rotated in the upcut direction, and the field is tilled and crushed by the rotary work body 3. At the same time, this tilled soil is guided by the screen 10 and the cover body 8 and is guided and released rearward.

In this case, the screen 1 is placed inside the cover body 8.
0 is disposed, and when a clod of earth is thrown onto this screen 10, each elastic bar-shaped member 1 whose free end 19 is the rear end of the screen 10
2 is elastically deformed in the vertical and horizontal directions by the impact, and swings in response to the impact, so that the screen 10 prevents tilled soil from adhering to the inside of the cover body 8. At the same time, each elastic rod-like member 12 of this screen 10 is guided to fall downward by the free end 19 extending to the rear lower part, and
Clods of soil or fine soil smaller than the gaps between the elastic rod-like members 12 pass through the gaps and are thrown toward the flat plate 20 at the rear. At this time, each elastic rod-shaped member 12
The independent elastic deformation and rocking motion of the elastic rod members 12 prevent clods of earth or weeds from getting caught between the elastic rod members 12 and causing clogging. Therefore, a cultivated soil layer with a coarse lower layer and a dense upper layer is formed, and the surface thereof is leveled and graded by the leveling plate 20.

[Effect of idea]

According to the present invention, between the cover body, which is formed in a substantially arc shape following the rotation trajectory of each tilling claw of the rotary work body, and the rotary work body, there is a space between the cover body that follows the rotation trajectory of each tilling claw of the rotary work body. A screen is interposed in which a plurality of elastic rod-like members curved in a substantially circular arc shape are arranged in parallel, and each tip of each elastic rod-like member of this screen is fixed to the inner side of the front end of the cover body. Since the rear end of each of the elastic rod-shaped members is set as a free end so as to face the rear upper part of the rotary work body, each elastic rod-shaped member of the screen is Each individually elastically deforms vertically and horizontally, and swings.
These elastic rod-shaped members can reliably prevent soil from adhering to the cover body, and can also reliably prevent clogging caused by clods of soil, weeds, and other impurities caught between the elastic rod-shaped members. Large soil clods are guided downward by each elastic rod-shaped member, and small soil clods and fine soil are thrown backward from between each elastic rod-shaped member, so that the lower layer is coarse. A dense cultivated soil layer can be reliably formed in the upper layer. In addition, since the screen is formed from a plurality of elastic rod-shaped members and swings by itself, it does not require a special structure for swinging, and has a simple structure, making it easy to manufacture and reducing costs. Never happened.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which Fig. 1 is a side view with a part of the agricultural machine cut away, and Fig. 2 is a partially exploded perspective view showing the relationship between a part of the cover body and the screen. It is a diagram. 3... Rotary work body, 4... Tilling shaft, 5...
Cultivating claw, 8...Cover body, 10...Screen,
12...Elastic rod-shaped member.

Claims (1)

[Scope of Claim for Utility Model Registration] A rotary work body which is rotationally driven in the up-cutting direction and has a number of tilling claws radially protruding in the axial direction of a tillage shaft, and a rotary work body which is arranged and fixed to the upper part of the rotary work body. A cover body formed in a substantially arc shape following the rotation locus of each tilling claw of the tilling body, and a cover body interposed between this cover body and the rotary work body that follows the rotation locus of each tilling claw of the rotary tillage body. a screen including a large number of elastic rod-shaped members curved in a substantially circular arc shape arranged in parallel; A cover device for an agricultural working machine, characterized in that a rear end is a free end facing the rear upper part of the rotary work body.