JP6168848B2 - Rotary tiller skid - Google Patents

Description

  The present invention relates to a skid for a rotary tiller for adjusting tillage depth.

  As disclosed in FIG. 4 of Patent Document 1, as a skid of a rotary cultivator, the skid has a warped shape with front and rear ends warped upward, and has a mounting bracket at the center. This mounting bracket is attached to the outer plate of the chain case so that the height can be adjusted.

Japanese Utility Model Publication No. 4-7681

In the skid of the rotary cultivator of Patent Document 1, when the skid touches the ground surface, the plowing depth at that position is maintained and the plowing work at a certain depth can be performed. It was difficult to cultivate deeply.
An object of the present invention is to provide a skid for a rotary tiller that can solve the problems of the prior art.

  An object of the present invention is to provide a skid for a rotary cultivator that can deeply cultivate by providing a deep digging member for excavating soil at the front part of the skid.

Specific means for solving the problems in the present invention are as follows.
First, in a skid of a rotary tiller that is provided below each of a transmission case and side frames that support both ends of a claw shaft and has a sled member that can be grounded to the ground surface during tillage,
A deep digging member is provided at a front portion of the sledge member to project downward from the ground contact surface portion to dig up the earth, and the deep digging member has an attachment portion to be attached to the sledge member and a gap portion extending downward from the attachment portion. In addition, the flat plate is bent to form the attachment portion and the gap portion inclined forward and downward from the attachment portion .

Secondly, in a rotary tiller skid having a sled member that is provided below each of a transmission case and side frames that support both ends of the claw shaft and that can be grounded to the ground surface at the time of tillage,
A deep digging member is provided at the front of the sledge member to project downward from the ground contact surface portion to dig up the earth. Is detachably attached.
Third, the front of the sled member, characterized in that it provided a guide member for guiding the field crop to the left and right outer side of Tsumejiku.

This onset Ming, deep member is provided on the front of the sled member, by the tip of the deep member protrudes to below the ground surface of the sled member, sled member is grounded to the ground surface when the tilling Since the deep digging member cuts the ground surface before, even if the skid digs deep and the skid is attached to the rotary cultivator, the tilling work can be performed deeper than the ground surface.

In addition , the deep digging member forms a mounting part that is attached to the sled member and a plowing part that slopes forward and downward from the mounting part. Therefore, when the rotary tiller advances in the direction of travel, the soil in the field is dug up without difficulty. You can scrape the ground surface.
Moreover , since the deep digging member is detachable from the sled member, the deep digging member can be attached to adjust the tilling depth, and the skid can be detached and used only with the same skid function as the conventional one.

Moreover , it can prevent damaging a field crop by providing a guide member in a sled member.

It is a side view of the rotary tiller equipped with the skid of the first embodiment of the present invention. It is a cross-sectional rear view of the whole rotary tiller. It is AA sectional drawing in FIG. It is the figure of the skid, (a) is a top view, (b) is a side view. It is a figure of the skid which shows 2nd Embodiment of this invention, (a) is a top view, (b) is a side view. It is a figure of the skid which shows 3rd Embodiment of this invention, (a) is a top view, (b) is a side view. It is a figure of the skid which shows 4th Embodiment of this invention, (a) is a top view, (b) is a side view. It is a figure of the skid which shows 5th Embodiment of this invention, (a) is a top view, (b) is a side view.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2 show a side drive type rotary cultivator 10 of the present invention, which is connected to a rear portion of a tractor vehicle body 100 through a three-point link mechanism 11 so as to be movable up and down.
The rotary tiller 10 projects a support arm 14 laterally from the gear case 12, and a transmission case 16 and a side frame 18 are attached to the outer ends of the left and right support arms 14 to form a rotary machine frame 19. The rotating short shaft 27 is provided at the lower part of the side frame 18, and the claw shaft 9 is connected between the rotating short shafts 27.

The rotary machine frame 19 is provided with left and right support stays 20 and a mast 21. The left and right support stays 20 are connected to the rear ends of a pair of left and right lower links 22 of the three-point link mechanism 11, and the mast 21 has a top link 23. It is connected.
The power transmitted from the PTO shaft 24 of the tractor body to the input shaft 26 via the joint 25 is transmitted through the gear 13 in the gear case 12 and the transmission shaft 15 in the left support arm 14 to the transmission chain transmission means in the transmission case 16. 17 drives the rotating short shaft 27 and the claw shaft 9. A plurality of tilling claws 8 are fixed to the claw shaft 9 through a plurality of flanges 28, and these form a tilling portion K, and the claw shaft 9 is rotationally driven in the direction of arrow X in FIG.

The skid 1 is attached to the side frame 18 and the transmission case 16 so that the vertical position of the skid 1 is adjustable and detachable so as to be provided below the side frame 18 and the transmission case 16 (so as to cover each lower part from below). ing.
The first embodiment of the present invention will be described below.
1-4, the skid 1 of 1st Embodiment of this invention is the sled member 2 which can be grounded to the ground surface at the time of tillage, and the attachment bracket 3 for attaching the skid 1 to the transmission case 16 and the side frame 18. As shown in FIG. It is configured.

  The sled member 2 is formed of a single plate material that is long in the front-rear direction, and is bent so as to warp upward at a flat ground surface portion 5 that can be grounded to the ground surface during tillage, and a front portion of the ground surface portion 5. The grounding surface portion 5 is positioned below each of the transmission case 16 and the side frame 18 and has a longitudinal length and a width that covers the lower portion thereof from below. The sled member 2 on the side frame 18 side may be positioned outside and below the side frame 18.

  The mounting bracket 3 is formed by a flat plate protruding upward from the front and rear portions of the grounding surface portion 5 of the sled member 2, and the mounting bracket 3 is provided with bolt mounting holes 3 a at a plurality of upper and lower positions. 16 or the outer surface of the side frame 18 is fixed so as to be adjustable in the vertical direction. Thereby, the skid 1 is attached to the transmission case 16 and the side frame 18 so that the vertical position can be adjusted.

And in the front part of the front warp part 4 of the sled member 2, the deep digging member 6A for deeper excavation is provided. The upper part of the front warp portion 4 is connected to the front mounting bracket 3.
The deep digging member 6A is formed by bending a flat plate having substantially the same width as the sledge member 2 into a side view, and a rear upper edge is attached to the front surface of the sledge member 2, and the attachment portion 6a It is comprised from the crevice part 6b extended from the front lower edge inclined forward and downward.

The deep portion 6b of the deep digging member 6A is in front of the front portion of the sled member 2, and the sled member 2
Since it protrudes downward from the lower surface of the ground contact surface portion 5 and forms a slope that rises rearward, the soil on the ground surface is excavated prior to the sled member 2 at the time of tillage, and the excavated soil is lifted rearward and upward be able to.
In addition, a guide member 7 </ b> A for guiding the field crops to the left and right outer sides of the claw shaft 9 is provided at the front portion of the sled member 2.

The guide member 7A projects a flat plate forward from the end of the sled member 2 on the side of the cultivating portion K, bends in a letter shape at the projected front portion, and moves outward and rearward away from the cultivated portion K. The rear part is fixed to the sled member 2 again.
Since the guide member 7A has an inclined surface 7a inclined outward from the front part to the rear part, when a field crop exists in front of the skid 1, the field crop is indicated in the direction indicated by the arrow Y in FIG. It can guide to the right-and-left outer side of the nail | claw axis | shaft 9, and can control that a field crop enters into the cultivation part K side. Moreover, even if the skid 1 slides sideways during the weeding operation, it is possible to prevent a tall field crop from being caught in the tilling claws 8 and being damaged.

According to the skid 1 of the first embodiment, before the skid 1 comes into contact with the ground surface when plowing, the deep portion 6b of the deep digging member 6A leads the ground surface to scrape the ground surface deeper than the ground surface. It advances while rolling, deepening the plowing depth, and simultaneously plowing the ground surface on the front side of the transmission case 16 and the side frame 18. The guide member 7A guides the field crops to the outside by the inclined surface 7a, and guides the soil dug by the deep digging member 6A to the outside. FIG. 5 shows a rotary cultivator according to the second embodiment of the present invention. Ten skids 1 are shown. This 2nd Embodiment differs in the attachment state of 1st Embodiment and the deep digging member 6B.

In the second embodiment, the deep digging member 6B is formed to be bent in a dogleg shape as in the first embodiment. However, the entire surface of the attachment portion 6a is turned to the front warp portion 4 of the sled member 2 by flipping back and forth. It is fixed by welding, and the gap portion 6b is inclined forward and downward from the attachment portion 6a.
As in the first embodiment, the deep digging member 6B has a clearance portion 6b protruding forward of the front portion of the sled member 2 and below the lower surface of the ground surface portion 5 of the sled member 2, and the mounting portion 6a. Is firmly attached to the front warp portion 4, so that a strong mounting structure is obtained.

FIG. 6 shows a skid 1 of a rotary tiller 10 according to a third embodiment of the present invention. In this third embodiment, the same deep-shaped deep member 6C as the deep member 6B of the second embodiment is detachably fixed to the front warp portion 4 of the sled member 2, and the guide member 7C is detachable. It has become.
As shown in FIG. 6B, the stud bolts S are attached to the attachment portion 6a of the deep digging member 6C so that the stud bolts S protrude in two upper and lower portions, and the front portion of the front warp portion 4 of the sled member 2 is More than one insertion hole 4a is provided.

By inserting the stud bolt S of the deep digging member 6C through the insertion hole 4a of the sled member 2 and fixing with the nut N, the deep digging member 6C is detachably fixed to the skid 1, and the insertion holes 4a are provided at three or more locations. Thus, the vertical position of the deep digging member 6C can be changed, and deep plowing can be adjusted.
As shown in FIGS. 6A and 6B, the guide member 7C is formed by forming a spring steel bar in a letter-like shape when viewed from the side. An inclined surface 7 a that is fixed to the warped portion 4 in a detachable manner and that crosses the front of the front warped portion 4 is formed at the front portion.

The guide member 7C is easily deformed elastically by being formed of spring steel, and can gently and gently guide field crops.
FIG. 7 shows a skid 1 of a rotary cultivator 10 according to a fourth embodiment of the present invention. In the fourth embodiment, the deep digging member 6 </ b> D has a bowl shape, and the guide member 7 </ b> D is provided up to the ground contact surface portion 5.

  As shown in FIGS. 7A and 7B, the deep digging member 6D is formed by bending a plate material in the width direction so as to have a V-shape in a plan view with a tapered tip and a tip edge having a circular arc shape in a side view. Projecting forward from the sled member 2 and below the ground contact surface 5 of the sled member 2, and proceeding while digging deeper than the ground surface with a small resistance, deepening the plowing depth, and plowing the cultivated soil It can be discharged to the left and right.

Further, the guide member 7D has a rear end of the steel or spring steel bar fixed to the grounding surface portion 5 of the sled member 2, and a portion from the rear lower end to the midway portion is arranged in parallel with the outer edge of the grounding surface portion 5, Is bent in the shape of a square that is applied to the front warp portion 4 and is inclined in a direction approaching the tillage portion K from the midway portion to the front upper end to form an inclined surface 7a.
The guide member 7D can be manufactured at a low cost by using a bar, and can guide the field crops to the rear of the sled member 2. The inclined surface 7a can also protrude from the transmission case 16 to the tillage portion K side.

FIG. 8 shows a skid 1 of a rotary tiller 10 according to a fifth embodiment of the present invention. In the fifth embodiment, the guide member 7A of the first embodiment shown in FIGS. 1 to 4 is attached to the deep member 6C in the third embodiment shown in FIG. 6, and the auxiliary member 30 for assisting the guide member 7A is further provided. It is arranged on the front side of the sled member 2.
The deep digging member 6C has a stud bolt S fixed to the back surface of the mounting portion 6a and a guide member 7A fixed to the front surface. The deep digging member 6C and the guide member 7A are detachably attached to the front warp portion 4 of the sled member 2. ing.

The auxiliary member 30 includes a star wheel 31 and a support member 32 that rotatably supports the star wheel 31, and the support member 32 is fixed to the front warp portion 4. The star wheel 31 is cultivated by the guide member 7A. The field crops guided outward from the K side are smoothly guided further outward to further prevent damage to the field crops.
In the present invention, the shape of each member in the first to fifth embodiments and the positional relationship between the front, rear, left, and right are best configured as shown in FIGS. However, it is not limited to the said embodiment, A member, a structure can be variously deformed, and a combination can also be changed.

For example, the warpage member 2 may be formed only by the ground contact surface portion 5 without the front warp portion 4, and the deep digging member 6 and the guide member 7 may be fixed or integrally formed on the front portion of the ground contact surface portion 5.
The skid 1 on the transmission case 16 side and the skid 1 on the side frame 18 side may have different left and right widths so long as they cover the lower portions from below and can stably support the left and right of the rotary tiller 10. That's fine.

DESCRIPTION OF SYMBOLS 1 Skid 2 Sled member 3 Mounting bracket 4 Front curvature part 5 Ground surface part 6 Deep digging member 6a Mounting part 6b Slot 7 Guide member 9 Claw shaft 10 Rotary tiller 16 Transmission case 18 Side frame

Claims (3)

Skid of a rotary tiller having a sled member (2) provided below each of a transmission case (16) and side frames (18) for supporting both ends of the claw shaft (9) and capable of being grounded to the ground surface at the time of tillage In
A deep digging member (6) is provided at the front portion of the sledge member (2) to project downward from the ground contact surface portion (5) to dig up the soil,
The deep member (6) is attached portion attached to the sled member (2) and (6a), possess a plow portion extending from the mounting portion (6a) below (6b), to and bending a flat plate, A skid for a rotary tiller, characterized in that the attachment portion (6a) and the plow portion (6b) inclined forward and downward from the attachment portion (6a) are formed . Skid of a rotary tiller having a sled member (2) provided below each of a transmission case (16) and side frames (18) for supporting both ends of the claw shaft (9) and capable of being grounded to the ground surface at the time of tillage In
A deep digging member (6) is provided at the front portion of the sledge member (2) to project downward from the ground contact surface portion (5) to dig up the soil,
The sled member (2) has a front warp portion (4) that warps upward at the front portion, and the deep digging member (6) is detachably attached to the front warp portion (4). Rotary tiller skid. The rotary tillage according to claim 1 or 2 , wherein a guide member (7) for guiding a field crop to the left and right outer sides of the claw shaft (9) is provided at a front portion of the sled member (2). Machine skid.

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