JP2016073242A - Skid device of rotary tiller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a straw caught in a skid to be smoothly carried to a tillage jaw side and to perform elimination processing from a field surface by means of a tillage jaw.SOLUTION: At least one lower part of right/left side parts of a rotary machine frame 2A supporting right/left both ends of a jaw shaft 6 including plural tillage jaws 5, a skid 7 is arranged which has a skid front part 7A curved upward. The skid front part 7A is positioned on a side of a tip of the tillage jaw 5. The skid 7 includes on a bent skid front part 7A a waste straw tool 8 which guides a caught straw F to the tillage jaw 5 side.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a skid device for a rotary tiller used during paddy field cultivation.

  The skid device prevents the rotary tiller from sinking and adjusts the tilling depth. Conventionally, as disclosed in Patent Document 1, a skid depth adjusting skid whose front end is warped upward is used. In the rotary device provided, one side edge of the front end portion of the skid is an inclined edge inclined so that the width of the skid gradually increases from the front to the rear, and the deposit removing wall extends upward from the inclined edge. (The scope of the request for a new utility registration).

Japanese Utility Model Publication 4-7681

In the prior art, one side edge (outer edge) of the front end portion of the skid is an inclined edge that is inclined so that the skid width gradually increases from the front to the rear, and the deposit removing wall extends upward from the inclined edge. Therefore, it is possible to prevent ridges, grasses, and the like from accumulating on the front surface of the front end portion of the skid during tillage.
However, in the prior art, the sloped edge of the front end of the skid is formed on the side (outer edge) far from the tilling nail, and the sediment removal wall creates a surface that keeps things to be accumulated such as straw and grass away from the tilling nail. Even if it can prevent the accumulation of firewood, grass, etc., it is pushed to the side and left on the field surface, so when cultivating the adjacent farmland, it will be caught again by the skid, and the long straw (grass, etc.) It is difficult to remove (including long residues) from the field surface.

It is an object of the present invention to provide a skid device for a rotary tiller that can solve such problems of the prior art.
The present invention relates to a rotary tiller capable of cutting and removing a long hook with a tilling nail by flowing a hook caught on the front of the rubbing tool to the tilling nail side with an unloading tool provided at the front part of the skid. An object is to provide a skid device.

Specific means for solving the problems in the present invention are as follows.
First, a skid 7 having a skid front portion 7A warped upward is provided at least at one lower portion of the left and right side portions of the rotary machine frame 2A that supports the left and right ends of the claw shaft 6 provided with a plurality of tilling claws 5. A rotary tiller skid device,
The skid front portion 7A is located on the side of the tip of the tillage claw 5,
The skid 7 is characterized in that a stool 7 that guides the hook F to the side of the tilling claw 5 is provided on the warped skid front portion 7A.

Second, the displacing tool 8 includes a support shaft member 11 that protrudes forward from the front surface of the skid front portion 7A and has a longitudinal axis portion 11A, and a roller 12 that is rotatably provided on the longitudinal axis portion 11A. It is characterized by having.
Thirdly, the longitudinal axis portion 11A of the support shaft member 11 is disposed between the center in the width direction of the skid front portion 7A and the outer edge away from the tilling nail 5.

Fourth, the vertical axis portion 11A of the support shaft member 11 is inclined forward from the lower part to the upper part, or inclined forward from the lower part to the upper part and inclined to the tilling claw 5 side. And
Fifth, the roller 12 is characterized in that the diameter R is equal to or less than the dimension of the left-right width 7W of the skid front portion 7A.
6thly, the said removal tool 8 is the guide board 13 which has 13 A of inclination guide surfaces which protruded back from the skid front part 7A and the tilling nail | claw 5 side.

According to the present invention, the hook caught on the skid can be smoothly flowed to the tilling nail side, cut and embedded with the tilling nail, and the long nail can be cut and removed from the field surface by the tilling nail.
That is, in the invention according to claim 1, since the skid 7 is provided with the culverter 8 that guides the hook F to the side of the tilling claw 5 on the skid front part 7A, the skid front part 7A of the skid 7 The hook F caught on the front surface can be smoothly flowed to the tilling claw 5 side, cut and embedded with the tilling claw 5, and the long hook F can be removed from the field surface to prevent re-hooking.

According to the second aspect of the present invention, since the removal tool 8 is provided with the roller 12 rotatably on the longitudinal axis portion 11A of the support shaft member 11, the rotation of the roller 12 allows the hail F to flow smoothly to the tilling claw 5 side. be able to.
In the invention according to claim 3, since the longitudinal axis portion 11A of the support shaft member 11 is disposed between the center of the skid front portion 7A in the width direction and the outer edge away from the tilling claws 5, the left and right sides of the skid 7 The cocoon F can flow smoothly to the tilling claw 5 side over substantially the entire width.

In the invention according to claim 4, the longitudinal axis portion 11 </ b> A of the support shaft member 11 is inclined forward from the lower part to the upper part, or inclined forward from the lower part to the upper part and inclined to the tilling nail 5 side. Therefore, the hook F caught on the roller 12 can be smoothly flowed to the tilling claw 5 side while moving downward.
In the invention according to claim 5, since the roller 12 has a diameter R equal to or smaller than the left and right width 7W of the skid front portion 7A, the roller 12 has a small diameter R, and the width of the roller 12 is almost equal to the right and left width of the skid 7. Can flow smoothly to the side of the tilling claw 5.

  In the invention according to claim 6, since the swage tool 8 is the guide plate 13 having the inclined guide surface 13A that protrudes rearward from the skid front portion 7A and toward the tilling claw 5, the inclined guide surface that allows the hook F to flow smoothly. 13A can be configured easily and inexpensively.

It is a left view which shows 1st Embodiment of this invention. It is the same top view. It is the same right view. FIG. It is a front view of the skid apparatus by the side frame side. It is a perspective view of the skid apparatus. It is a perspective view of the skid apparatus by the side frame which shows 2nd Embodiment. It is a front view of the skid apparatus. It is a perspective view of the skid apparatus by the side frame which shows 3rd Embodiment. It is the same top view. It is the same right view.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In the first embodiment shown in FIGS. 1 to 6, reference numeral 2 denotes a side drive type rotary tiller, which is connected to the rear portion of the tractor vehicle body T via a three-point link mechanism S so as to be lifted and lowered. Skid devices 3 are provided on the left and right sides of the frame 2A.
The rotary tiller 2 projects a support arm 16 laterally from the gear case 15, and a transmission case 17 and a side frame 18 are attached to the outer ends of the left and right support arms 16 to constitute a rotary machine frame 2 </ b> A. A rotating short shaft 19 is provided below the side frame 18, and the claw shaft 6 is connected between the rotating short shafts 19.

In the rotary machine frame 2A, the gear case 15 and the left and right support arms 16 are horizontally arranged, and the transmission case 17 and the side frame 18 are extended downward from both side portions of the left and right support arms 16, so It is in the shape.
The rotary machine frame 2A 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 S. The mast 21 has a top link 23. It is connected.

The power of the PTO shaft 24 of the tractor vehicle body T is transmitted to the input shaft 28 of the gear case 15 via the joint 25. The power of the input shaft 28 drives the rotating short shaft 19 and the claw shaft 6 by the chain transmission means 32 in the transmission case 17 via the gear 29 in the gear case 15 and the transmission shaft 30 in the left support arm 16.
The claw shaft 6 is a cylindrical shaft, and a plurality of tilling claws 5 are fixed to the outer periphery via a plurality of brackets 31 to form a tilling portion K. The claw shaft 6 is shown in FIGS. It is rotationally driven in the direction of arrow A. The nail 5 and the normal nail are used as the tilling nail 5, but it may be an L-shaped nail that is bent toward the transmission case 17 or the side frame 18 toward the front end from the front of the nail center to the front end. Good.

The rotary machine frame 2A includes a side plate 34 fixed to the inner surfaces of the transmission case 17 and the side frame 18, and a front frame member 35 that connects the front portions of the left and right side plates 34. A main cover 36 that covers the top of the tillage portion K is attached to the frame member 35, and a substantially central portion of the main cover 36 is supported by the gear case 15 via a fixing member 37.
Left and right support stays 20 are provided on the front frame member 35 and the main cover 36, the mast 21 is supported on the left and right support stays 20, and a rear cover 38 that covers the rear of the tillage part K is pivotally supported at the rear of the main cover 36. Between the rear portion of the support stay 20 and the rear cover 38, a lowering means 39 that applies a uniform pressure to the rear cover 38 is provided.

A skid device 3 for adjusting the tilling depth is attached to the transmission case 17 and the side frame 18 so that the vertical position can be adjusted and detachable. The skid device 3 is provided on each outer surface of the transmission case 17 and the side frame 18 and has a substantially symmetrical structure.
Each of the left and right skid devices 3 includes a skid 7 having a front skid portion 7A that warps forward and upward on the front side of the flat main body portion 7B, and the skid 7 on the outer side surfaces of the transmission case 17 and the side frame 18. It has a stay member 9 that is detachably mounted, and an urging tool 8 fixed to the front surface of the skid front portion 7A of the skid 7.

The skid 7 is formed by bending the front part of a belt-shaped plate material to form a main body part 7B and a skid front part 7A. The front and rear stay members 9 are formed on the upper surface of the main body part 7B and the upper surface of the skid front part 7A in the vicinity of the bent part. The left and right ends of the squeeze tool 8 are welded to the front face that faces downward by welding the lower end of the skid and curling the skid front part 7A.
A plurality of bolt holes 9a in the vertical direction are formed in the front and rear stay members 9, and are fastened to the outer side surfaces of the transmission case 17 and the side frame 18 via fasteners 10 (bolts) so that the vertical position can be adjusted. .

The front and rear stay members 9 can adjust the height of the main body portion 7B of the skid 7 with respect to the rotary tiller 2 or the angle with respect to the horizontal by adjusting the respective attachment positions up and down, and the tilling depth of the rotary tiller 2 can be adjusted.
For example, when the plowing depth of the rotary cultivator 2 is increased, the skid device 3 changes the position of the front and rear stay members 9 to the upper position relative to the rotary machine frame 2A, and at the same time lowers the front stay member 9 below the rear stay member 9. The body 7B of the skid 7 is adjusted to be horizontal with respect to the field.

The left and right skids 7 have a side closer to the tillage part K including the claw shaft 6 being an inner side and a far side being an outer side, and a hook F (shown in FIG. 2) that is caught on the outer side of the front surface of the warped skid front part 7A. , And includes a long residue such as grass).
The displacing tool 8A shown in the first embodiment protrudes forward from the front surface of the skid front portion 7A, has a support shaft member 11 having a vertical mounting portion 11B and a vertical axis portion 11A, and is rotatable about the vertical axis portion 11A. And a roller 12 provided on the surface.

The support shaft member 11 is formed of a pipe material or a bar material in a U-shape in a side view, the central portion is a vertical axis portion 11A, and the upper and lower end portions are attachment portions 11B bent at a right angle from the vertical axis portion 11A. Yes. The support shaft member 11 is formed by bending a single pipe member or bar member, or is formed by detachably connecting the longitudinal axis portion 11A and the vertical attachment portion 11B.
The longitudinal axis portion 11A of the support shaft member 11 is disposed between the center in the width direction (center line θ) of the skid front portion 7A and the outer edge away from the tilling claw 5, and the skid front portion in the forward tilted posture. Since it is substantially parallel to the front surface of 7A, it is inclined forward from the bottom to the top.

The roller 12 is formed in a cylindrical shape with synthetic resin or the like, and the diameter R is preferably equal to or less than the dimension of the left and right width 7W of the skid front portion 7A, and is preferably lightweight and easily rotatable. Since the vertical axis portion 11A is in the forward tilt posture, the roller 12 is also tilted forward from the lower portion to the upper portion.
When plowing with the rotary cultivator 2, the skid 7 of the skid device 3 has the main body portion 7B grounded to the field in a horizontal posture and the skid front portion 7A grounded in a forward tilted posture. The roller 12 on the front side of the skid front portion 7A has a roller 12 that precedes the skid front portion 7A, so that a long hook F or the like is caught by the roller 12 alone or from the roller 12 to the inner edge of the skid front portion 7A. By being hooked, the end of the heel F approaches the tilling claw 5, is caught by the tilling claw 5, and is pulled by the tilling claw 5. Since the roller 12 rotates when the kite F is drawn, it can be easily moved. The cocoon F drawn into the cultivating claw 5 is cut by the cultivating claw 5 or embedded in the soil.

  When the middle part of the long hook F is caught by the roller 12, the roller 12 is in a position corresponding to the outer edge of the skid front part 7A. Fluttering, the edge of the heel F on the left and right inner sides from the roller 12 abuts on the inner edge of the skid front part 7A from the roller 12 and inclines so as to approach the tilling claw 5 backward, Since the inclined side receives resistance from water and soil, it will be pulled backward, and will flow to the tilling claw 5 side while rotating the roller 12.

Further, since the roller 12 is located at a position corresponding to the outer edge of the skid front portion 7A, most of the left and right width of the skid front portion 7A has the maximum width of the rotary cultivator 2 and the hail F remaining on the field. It can be guided to the tilling claw 5 side, cut, embedded and removed.
7 and 8 show a second embodiment of the present invention. The difference from the first embodiment is that the longitudinal axis portion 11A of the support shaft member 11 of the displacing tool 8B is inclined forward from the lower part to the upper part. On the upper side, it is inclined toward the tilling claw 5 from the lower part to the upper part.

Since the vertical axis portion 11A is inclined from the lower part to the upper part toward the tillage claw 5, the roller 12 loosely fitted to the vertical axis part 11A has a resistance that the fence F receives from water and soil from the outside (upper side). The claw 5 side (lower side) becomes larger, and the resistance causes the roller outer peripheral surface to rotate from the front side to the tilling claw 5 side, and guides the hooked F to the tilling claw 5 side.
Therefore, even if the hook F caught on the roller 12 is not pulled by the tilling claw 5, it is sent to the tilling claw 5 side by the rotation of the roller 12, and is cut by the tilling claw 5 or embedded in the soil.

  FIGS. 9 to 11 show a third embodiment, in which an excavator 8C is formed of a guide plate 13 having an inclined guide surface 13A protruding rearward from the skid front portion 7A and toward the tilling claw 5 side. The guide plate 13 is formed by providing a tongue-shaped portion on the plate material forming the skid 7 and bending the tongue-shaped portion from the skid front portion 7A. The guide plate 13 may be formed by welding a plate material different from the plate material forming the skid 7 to the skid front portion 7A.

The scavenger 8C pulls one end of the hook F caught on the skid front part 7A away from the skid front part 7A toward the tilling claw 5 so that it can be easily caught on the tilling claw 5, and the hook F is caught on the skid front part 7A. Although it receives movement resistance, it tends to flow toward the tilling claw 5 and is easily drawn into the tilling claw 5 and is cut by the tilling claw 5 or embedded in the soil.
Moreover, since the soil and water which the inclined guide surface 13A collides are flowed to the tilling nail | claw 5 side, the one end side of the hook F caught on the skid front part 7A and contact | abutted to the inclined guide surface 13A flows the soil and water. Can be moved and guided to the tilling claw 5 side.

In the present invention, the shape of each member and the positional relationship between the front, rear, left, and right in the embodiment 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 displacing tools 8A and 8B according to the first and second embodiments are formed only by the support member 11 without the roller 12, and the surface of the support member 11 is subjected to Teflon (registered trademark) processing or the like so as to be smooth. It may be left on the surface.

DESCRIPTION OF SYMBOLS 2 Rotary cultivator 2A Rotary machine frame 3 Skid device 5 Cultivation claw 6 Claw shaft 7 Skid 7A Skid front part 8 Exclusion tool 9 Stay member 11 Support member 11A Vertical axis part 12 Roller 13 Guide plate 13A Inclined guide surface K Tillage part F straw

Claims (6)

The skid front part (7A) is warped upward at at least one lower part of the left and right sides of the rotary machine frame (2A) that supports the left and right ends of the claw shaft (6) provided with a plurality of tilling claws (5). A rotary tiller skid device provided with a skid (7),
The skid front (7A) is located on the side of the tip of the tillage claw (5),
The said skid (7) is provided with the removal tool (8) which guides the hook (F) hooked to the tilling nail (5) side in the warped skid front part (7A). Skid device.   The displacing tool (8) protrudes forward from the front surface of the skid front portion (7A) and has a support shaft member (11) having a longitudinal axis portion (11A), and is rotatable on the longitudinal axis portion (11A). The skid device of a rotary tiller according to claim 1, characterized in that it has a roller (12) provided.   The longitudinal axis portion (11A) of the support shaft member (11) is disposed between the center in the width direction of the skid front portion (7A) and the outer edge away from the tilling claw (5). A skid device for a rotary tiller according to claim 2.   The vertical axis part (11A) of the support shaft member (11) is inclined forward from the lower part to the upper part, or inclined forward from the lower part to the upper part and inclined to the tilling nail (5) side. The skid device for a rotary tiller according to claim 2 or 3.   The rotary tiller according to any one of claims 2 to 4, wherein the roller (12) has a diameter (R) that is equal to or smaller than a width (7W) of the front part (7A) of the skid. Skid device.   The said removal tool (8) is a guide plate (13) having an inclined guide surface (13A) protruding rearward from the skid front part (7A) and toward the tilling claw (5). A skid device for a rotary cultivator according to 1.

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