JPS62257303A - Reversively rotatable rotary plowing pawl - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field]

The present invention has a shape of a sea urchin claw that allows a single rotary device to perform deep plowing work using the up-cut plowing method when the rotary shaft rotates in reverse, and to perform work on the surface frame using the down-cut plowing method when the rotary shaft rotates forward. This invention relates to a forward/reverse rotating rotary 411 unloading claw which is an improved version of the above.

[Conventional technology]

Generally, a tilling claw is attached to the rotary shaft of a rotary tillage device via a claw attachment part, and by rotating the rotary shaft in the forward direction with respect to the direction of travel, tilling,
Perform work such as raking the crushed soil. By using the so-called down-cut tillage method and rotating a rotary shaft equipped with a set of plowing claws in the opposite direction to the direction of travel, the tilling claws cut the soil from the bottom of the tiller toward the ground surface while tilling and working on the frame. Let's do it. A cultivation method called the so-called upcut construction method is known.

[Problems to be solved by the invention]

However, although the upcut tillage method using a rotary tillage device has lower tillage energy and specific energy than the downcut tillage method, since the tillage reaction force is directed backwards, the traction resistance to the tractor increases and the tillage If the cut soil is not thrown backwards by the claws, the clod will remain within the rotary action area and will be ejected again.
There are problems such as increasing tillage energy. Therefore, while the conventional up-cut method has the advantages of lower cutting resistance and deeper plowing than the down-cut method, it also has the disadvantages of inferior backward throwing effect of cut soil, etc.
There are many practical problems, which are the reasons for the delay in widespread use. The present invention is based on the above)! This improves the shortcomings of the conventional upcut method, which improves the backward throwing effect of the cut soil, and also improves the surface by the same claw by rotating the rake shaft in the forward direction after the upcut method described above. To provide a forward and reverse rotation rotary tiller claw for the purpose of improving the soil crushing effect.

[Means to solve the problem]

In order to achieve the above object, according to the present invention, the axial center of the rotary shaft rotates below the ground surface when tilling by the up-cut plowing method, and the axial center of the rotary shaft rotates below the ground surface when tilling by the down-cut plowing method. A tilling claw attached to a rake that rotates over the surface, forming a horizontal blade part that is opposite to the vertical blade part and whose tip is bent in a 1-shape with the tip almost perpendicular to one side (),
” - Position the starting end of the outer circumferential side of the structure blade at the intersection of the rotation center of the rotary shaft and the line that is tilted forward by α degree from the straight line passing through the attachment hole of the plowing/υ claw and the rotation radius of the claw. At the same time, the inner circumferential side starting end is located on a line that is tilted backward by β degrees from the line passing through the rotation center of the rotary shaft and the outer starting end, and an arc-shaped smooth groove is formed between both starting ends of the horizontal blade. It is characterized by forming a wedge face.

[For production]

Based on the above configuration, according to the present invention, upcut 1
When tilling by method 1, as the tilled soil is cut from the bottom of the tiller toward the ground surface, the cut soil clods become slices and slide on the rake face of the side blade without remaining in the action area of the rotary. It is rotated in the opposite direction to the rotary shaft and thrown backwards, and the soil is thrown backwards without accumulating clods on the front of the rotary shaft, so the tractor's traction resistance is small and a depth of 1 is possible. be. In addition, after the above-mentioned tilling operation, if the rotary shaft is positioned above the surface of the tilled soil and rotated in the forward direction, the surface of the tilled soil is struck by the back of the rake face of the lateral force section and the soil crushing operation is performed. By simply selecting the rotation direction of the rotary shaft using one rotary device, it is possible to perform tillage work using the up-cut method and work on the frame using the down-cut method.

【Example】

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a side view showing a schematic configuration of a tillage device suitable for up-cut tillage according to the present invention, FIG. 2 is a side view showing the shape of tilling claws according to the present invention, and FIG. ■This is a sectional view, and the tillage/soil crushing device indicated by reference numeral 1 in the figure is attached to the rear of an agricultural tractor via a three-point link hitch mechanism (not shown) so that it can be raised and lowered in the vertical direction (
A gear box 2 is provided at the center of the shoe body. The gear box 2 is provided with an input shaft 3 projecting forward and connected to the PTO shaft of the tractor via a transmission shaft, a universal joint, etc., so that driving force can be transmitted. The driving force transmitted from the input shaft 3 is
The speed is reduced by a gear reducer or the like in the gear box 2, and is transmitted through the chain in the chain case 4 to the rotary shaft 5 pivotally supported on both sides of the lower end of the chain case 4 as driving force for forward or reverse rotation. It looks like this. Here, the rotary shaft 5 extends perpendicularly to the direction of movement of the tillage/soil crushing device 1, and the direction of rotation in the direction of movement is called forward rotation, and the opposite direction is called reverse rotation. The rotary shaft 5 is driven to rotate in the opposite direction. The rotary shaft 5 has a rental drive system in which the chain case 4 is installed at the center of the plowing width, extending to the left and right, and a chain case 4 installed at one end of the plowing width and a support frame at the other end. A side drive system in which the rotary shaft 5 is supported between the chain case 5 and the chain case 4, or a side drive system in which the rotary shaft 5 is supported between the chain cases 4 and the chain case 4 installed within a certain width range. The rotary shaft 5 is driven by a cassette drive system, etc., and a drive system suitable for each rod assembly condition is selected. The pawl attachment part 6 is fixed by welding or the like, and the pawl attachment part 6 is attached in a direction perpendicular to the rotary shaft 5, and bolts, nuts 1 to 5, etc. are inserted into the attachment holes drilled at the tip. A tilling claw 8 is fixed through the tilling claw 8. As shown in FIGS. 2 and 3, the tilling claw 8 is
A horizontal blade part 8b is formed which is bent in an L-shape with the tip end thereof being substantially perpendicular to one side with respect to the vertical blade part 8a, and a proper blade edge is formed on the side edge in the rotational direction from the vertical blade part 8a to the horizontal blade part 8b. is formed. The outer peripheral side starting end 8C forming the horizontal blade part 81) of the tilling claw 8 is rotated forward by α degrees <approximately 45
It is located at the intersection of the inclined line n and the claw rotation radius R, and the inner circumferential starting end 8e of the horizontal blade part (former) is inclined by β degrees (approximately 30 degrees) toward the rotation rearward from the line n. It is located on the line P, and the space between the starting end 8c and Be of the horizontal blade portion 8b is formed to have a smooth arc-shaped rake face with a radius r and a concave curve in the direction of rotation. Therefore, by rotating the rotary shaft 5 in the reverse direction, the tilling claws 8 can be used to perform tilling work using the up-cutting method, and by rotating the rotary shaft 5 in the forward direction while positioning the axis of the rotary shaft 5 above the ground surface. For example, the surface of the soil, which has been excavated by the lower lug cut construction method, is struck by the back surface of the horizontal blade portion 8b, making it possible to work on the frame. Here, an embodiment has been described in which the horizontal blade part 8b of the above-mentioned nail 8 is forged integrally with the vertical blade part 8a.
11 In order to improve the strength of the base of the unloading claw 8, the side blade part 8b is welded to a round bar, square piece, or pipe material, or the worn side blade part 81) is removably fixed so that it can be replaced. It is also possible to adjust the mounting varus of the lateral force portion 8b. In addition, the arc-shaped scoop formed on the horizontal blade part 8b of the tilling claw 8 has a high wear resistance, especially in the rake face of the horizontal blade part 8h and in a predetermined range of the vertical blade part 8a. The chain case 4 transmits the driving force to the rotary shaft 5.
is inclined ( ) so that the rotary shaft 5 side is closer to the traveling direction, and in front of this chain case 4 is a soil adhesion prevention plate 10 made of an elastic material made of rubber or plastic, as shown in FIG. installed. Further, above the chain case 4 and below the gear box 2, a rotary cover 11 suitable for discharging backward the clod of soil cut and thrown by the tilling claws 8 is installed. The shield cover 12 installed above the claw rotation part and the rotary shaft 50
The front cover 14 installed in front of the shield cover 12, and the apron 15 attached to the rear of the shield cover 12 so as to be vertically movable, etc. cover both sides of the side cover 13. It is comprised of a sub side cover 16 which is movably attached. The shape of the shield force bar 12 is such that the clearance between the tip of the claw 8 and the shield cover 12 is the minimum at a position slightly forward of the top end of the claw rotation trajectory R, and it widens towards the rear. inclined in the shape of

[It is formed by ノ and improves the effect of throwing soil clods by up-cut tillage. Next, the operation using the tilling claws configured as described above will be explained. First, the tilling claw 8 is formed into a shape suitable for the up-cut assembly method, and the rotary shaft 5 to which the tilling claw 8 is fixed is located in front of the chain case 4.
In the up-cut assembly method according to the present invention, the rake shaft 5 is positioned below the ground surface G, and 1''/R (H is the assembly method, R is the pawl rotation radius). Deep cultivation is possible with a value of 1 or more. Therefore, as the tilling claws 8 cut the set from the tilling bottom toward the ground surface, the cut soil clods become sliced, and cracks occur in the soil clods near the ground surface, and the horizontal blade portions 8
While sliding on the rake face of b, it is rotated in the opposite direction to the rotary shaft 5 and thrown backward. At this time, a part of the cut soil clod is held in the scoop of the side blade part 8b and thrown backwards through the inside of the claw rotation trajectory without leaving the cut soil within the action area of the rotary. Therefore, almost no clod is deposited in front of the rotary shaft 5. In addition, when the clod thrown by the horizontal blade part 8b passes through the outer circumference of the claw rotation trajectory, it will hit the shield cover 12 (hit, strike, Since the soil is crushed and falls behind the rotary shaft 5, clods of soil that increase running resistance and traction resistance will not accumulate in front of the chain case 4 and in front of the rotary shaft 5. After plowing,
As shown in Fig. 5, when the axis of the tilled soil shaft 5 is located above the ground surface G and rotated in the positive direction at H/R of 1 or less (1), the surface of the tilled soil is The soil is crushed by being hit by the back part of the rake face of the part 8b. Effects of the Invention As described above in detail based on the embodiments, the tilling claw according to the present invention is bent in a 1-shape with the tip facing the vertical blade portion and at a substantially right angle to one side. Form a side blade part with 1 slot, and connect the starting end of the outer circumferential side of the side blade part to a line that is slightly tilted forward in rotation from a straight line passing through the rotation center of the rotary shaft and the attachment hole of the tilling claw, and the nail rotation radius. The outer periphery of the structure blade section is positioned so that the starting end on the inner circumferential side is located on a line tilted by β degree toward the rear of rotation from the line passing through the center of rotation of the rotary shaft and the starting end on the outer circumferential side. An arcuate rake surface is formed between the side starting end and the inner circumferential starting end, and during up-cut tilling, the axis of the rotary shaft is configured to rotate below the ground surface. The effect of throwing the cut and tilled soil clods backwards is improved, and by dumping the tilled soil on both sides, the amount of plowing energy is reduced, and a depth of 11 times is possible. Also,
By rotating the axis of the rotary shaft of the tilling claw in a positive direction on the ground surface, surface crushing of 1.10 times can be effectively performed.

[Brief explanation of drawings]

FIG. 1 is a side view showing a schematic configuration of a mutual tiller suitable for up-cut tillage according to the present invention, FIG. 2 is a side view showing the shape of the tilling claw according to the present invention, and FIG. ■−■
A sectional view, Figure 4 is a sectional view taken along III-III in Figure 1, and Figure 5 is a sectional view taken along line III-III in Figure 1.
The figure is a side view showing the soil crushing operation state of the rotary device according to the present invention. 1... Tillage/soil crushing device, 2... Gear box, 3
...Input shaft, 4...Chain case, 5...Rotary shaft, 6...Claw mounting part, 7...Bolt/nut,
8...Tilling claw, 8a...Vertical blade part, 8b...Horizontal blade part, 8C...Starting end on outer peripheral side, 8d...Mounting hole, 8e
... Inner peripheral side starting end, 9... Coating, 10...
・Soil adhesion prevention board, 11...Low recovery cover, 12...
・Shield cover, 13...Side cover, 14...
・Front cover, 15...Apron, 16...Secondary side cover.

Claims (1)

[Claims] A tilling claw attached to a rotary whose axial center rotates below the ground surface when tilling by up-cut tilling, and whose axial center rotates above the ground surface when tilling by down-cut tilling, Opposing the vertical blade part, the tip side forms a horizontal blade part bent in an L-shape almost at right angles to one side,
Position the starting end on the outer circumferential side of the horizontal blade at the intersection of the rotational radius of the claw and a line tilted forward by α degrees from the straight line passing through the center of rotation of the rotary shaft and the attachment hole of the tilling claw, and The starting end is located on a line tilted by β degrees toward the rear of the rotation from the line passing through the rotation center of the rotary shaft and the outer starting end, and an arc-shaped smooth rake face is formed between both starting ends of the horizontal blade part. A rotary tilling claw that rotates forward and backward.