JP4393978B2 - Rotary cultivator - Google Patents

Description

  The present invention relates to a rotary cultivator that is attached to a rear portion of a self-propelled cultivator and cultivates cultivated land with cultivating claws.

For example, as shown in FIG. 8, the conventional rotary tiller 115 is attached to the rear part of the tractor (self-propelled machine) 110. A cylindrical work machine attachment portion 132 is detachably attached to the main body frame 116 on the right side of the main body of the rotary tiller 115.
In order to attach the side ski (working machine) 133 to the rotary tiller 115, the tip of the rod-like mounted member 134 of the side ski 133 is inserted into the working machine mounting part 132 and fixed with a bolt 135 or the like. Fix to work implement mounting part 132. Then, the tractor 110 is advanced in the direction of the arrow U, and the remaining tillage processing work such as ridge grooving and aze cutting is performed with the side ski 133 while cultivating the cultivation surface Q with the rotary cultivator 115.

However, if the rotary cultivator 115 to which the side ski 133 is attached is attached to the rear part of the tractor having different specifications from the tractor 110, the positional relationship between the side ski 133 and the cultivation surface Q becomes inappropriate, and a desired residual tillage processing operation cannot be performed. There was a problem. For this reason, every time the rotary cultivator 115 is attached to a tractor with different specifications, the detachable work implement attachment portion 132 must be replaced with an appropriate work implement attachment portion, and a plurality of types of replacement work implement attachment portions are provided. A storage place was needed to In addition, since it takes time to replace the work implement attachment portion 132, there is a problem that the efficiency of farm work is poor.
Then, the objective of this invention is providing the rotary tiller provided with the working machine attachment part which can respond to the self-propelled machine of various specifications.

For this reason, the invention described in claim 1 is a rotary cultivator that is attached to the rear part of the self-propelled tractor and cultivates the cultivated land with the cultivating claws. The working machine is mounted by attaching a support member to the depth beam and supporting the intermediate portion of the attached member so as to be rotatable and slidable .

  According to a second aspect of the present invention, in the rotary cultivator according to the first aspect, the work implement attachment portion includes a cylindrical holding member, and the attached member is inserted and held in the cylindrical holding member. It is characterized by doing.

The invention according to claim 3 is the rotary tiller according to claim 1, wherein the support member is a hook-shaped hook portion attached to the depth beam, and a rotating portion extended from the hook portion. A cylindrical support provided rotatably with respect to the turning part,
The attached member is inserted into the cylindrical support portion and slidably supported.

According to the first aspect of the present invention, the working machine mounting portion for rotatably mounting the tip of the rod-shaped mounted member provided in the working machine is provided, and the support member is attached to the depth beam. Since the work machine is mounted by supporting the middle part of the member so that it can rotate and slide freely , when another self-propelled machine is attached to the rotary cultivator, work according to the change in the attitude of the rotary cultivator. Since the machine attachment portion and the support member rotate and slide, it is possible to provide a rotary cultivator provided with a work implement attachment portion that can support various types of self-propelled machines. Moreover, it is not necessary to change the work machine attachment part according to the self-propelled machine as before, and the farm work can be performed efficiently.

  According to the second aspect of the present invention, the work implement mounting portion includes the cylindrical holding member, and the mounted member is inserted and held in the cylindrical holding member, so that the work implement is attached with a simple configuration. Can do.

  According to the third aspect of the present invention, the support member is pivotable with respect to the hooking hook portion attached to the depth beam, the rotating portion extending from the hooking portion, and rotatable relative to the rotating portion. Since it is provided with a cylindrical support provided and is slidably supported by inserting a member to be attached into the cylindrical support, it can be used for various types of self-propelled machines with a simple configuration. A rotary cultivator can be provided.

Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic side view of a state in which a side ski as a working machine is attached to the rotary tiller of the present invention, and FIG.
A tractor (self-propelled machine) 10 is connected in front of the rotary cultivator 15. A top link 11, a pair of left and right lower links 12, and a PTO shaft 13 are provided at the rear of the traveling direction Z of the tractor 10. A rotary tiller 15 is attached to the top link 11 and the ends of the pair of left and right lower links 12. A gear box 22 of the rotary tiller 15 is connected to the PTO shaft 13 via a universal rotation 14.

In the gear box 22, the rotation direction of the universal rotation 14 is changed, and a gear 42 c attached to one end of the shaft in the cylindrical main beam 21 transmits power to the chain 43 in the chain case 50. The tilling claw 17 projecting from the outer peripheral surface of the claw shaft 17a is rotated by rotation of the claw shaft 17a directly connected to a gear (not shown) engaged with the chain 43.
A rotary cover 18 is provided above the rotation of the tillage claw 17, and a rear cover 19 is rotatably connected to the rear end of the rotary cover 18 via a rotation unit 20.

A telescopic adjustment rod is attached to the rotary cover 18. On the other hand, the adjusting rod is rotatably attached to the upper arm 29. Further, a handle 25 is extended to one end of the adjustment rod.
Therefore, when the handle 25 is rotated, the adjustment rod expands and contracts to rotate the rotary cover 18 back and forth about the claw shaft 17a, and the rotary cover 18 can be adjusted in position according to the tilling depth. It can be done.

  At the rear end of the rear cover 19, a lower end of the hanger rod 26 is pivotally supported. On the other hand, on the rear surface of the rotary cover 18, rod stays 27 are provided obliquely upward and rearward on both the left and right sides, and the upper part of the hanger rod 26 is rotatable around the rotation shaft 28 at the upper end of the rod stay 27. In addition, the hanger rod 26 is supported slidably in the length direction. A coil spring (not shown) is wound around the outer periphery of the hanger rod 26 to urge the rear cover 19 downward (counterclockwise in FIG. 1).

Further, the top link 11 of the tractor 10 is attached to one end of a V-shaped upper arm 29 provided on the outer periphery of the upper portion of the main beam 21 in the substantially center in the width direction. Further, one end of an adjustment screw 30 is rotatably attached to another end of the upper arm 29, and an adjustment handle 32 is attached to one end of the adjustment screw 30. One end of the depth beam 31A is rotatably attached to two stays 21a extending from the main beam 21 via pins 31a. By rotating the adjustment handle 32, the adjustment screw 30 expands and contracts, and the columnar depth beam 31A rotates around the pin 31a.
A side cover may be attached to the rear side of the rotary cover 18, or a side under cover may be attached to the rear end of the rear cover 19.
The configuration of the rotary cultivator 15 described above is the same as that of a conventionally known technique.

  By the way, on the outer side surface of the main body frame 16 of the rotary cultivator 15, a work implement attachment portion 37 is rotatably provided. The work implement attachment portion 37 includes a cylindrical holding member 52, a fixing member 35 such as a screw that is opened in the outer peripheral surface of the holding member 52 and attached in the diameter direction of the holding member 52, and the holding member 52. And a rotating member 38 that is rotatably attached to the motor.

  In addition, a square cylindrical depth beam 31B is fixed to the rear ends of two depth beams 31A that are respectively attached to and parallel to the two stays 21a by screws or the like in a direction orthogonal to the two depth beams 31A. To do. A support member 36 is detachably attached to the body frame 16 side of the depth beam 31B.

3 (a) is an enlarged side view in the vicinity of the support member 36 shown in FIGS. 1 and 2, FIG. 3 (b) is a plan view taken along the arrow A in FIG. 3 (a), and FIG. 4 (a) is FIG. FIG. 4B is a cross-sectional view taken along arrow B in FIG. 4 and FIG. 4B is a cross-sectional view taken along arrow C in FIG.
The support member 36 includes a plate-shaped hooking portion 36A1 having a substantially U-shaped cross section, a hollow, square-pole-shaped rotating portion 36A2 provided continuously to the hooking portion 36A1, and the rotating portion 36A2. The hollow portion 36AA is provided with a rotation bar 36B rotatably provided, a cylindrical support portion 36C fixed to one end of the rotation bar 36B by welding or the like.
The other end of the rotation bar 36B is configured so that the rotation bar 36B does not fall out of the hollow portion 36AA by the sealing member 36B1. The rotation bar 36B is provided so as to be rotatable in the hollow portion 36AA.
The hook portion 36A1 is formed so that the dimension of the U-shaped opening is slightly narrower than the mounting width of the depth beam 31B and has elasticity so that the hook portion 36A1 does not easily fall off when attached to the depth beam 31B. And when attaching, it attaches so that this opening part may be opened.
A pipe-like attached member 34 of a side ski (working machine) to be described later is inserted into the support portion 36C. The attached member 34 is slidable in the support portion 36C.

Next, the side ski 33 is attached to the rotary cultivator 15 configured as described above, and the remaining tillage processing work such as ridge grooving and aze cutting is performed while cultivating the cultivation surface G with the rotary cultivator 15. Description will be made with reference to FIGS. 1 to 4 with reference to FIGS.
First, the support member 36 is attached to the body frame 16 side of the depth beam 31B. Specifically, the opening portion of the hook portion 36A1 is widened and attached so as to be sandwiched between the depth beam 31B. Next, the attached member 34 of the side ski 33 is penetrated from the tip into the hollow portion 36AA formed in the support portion 36C of the support member 36, and the tip of the attached member 34 is inserted into the hollow portion of the holding member 52. And the front-end | tip of the to-be-attached member 34 is fixed with the fixing member 35, and the side ski 33 is attached to the rotary tiller 15 (FIG.5 (a)).

Then, the adjustment handle 32 is rotated to rotate the depth beam 31A downward with the pin 31a as a fulcrum. As a result, the depth beam 31B attached to the rear end of the depth beam 31A also rotates downward. The attached member 34 is attached to the depth beam 31B via the support member 36 and attached to the main body frame 16 via the holding member 52.
Therefore, when the depth beams 31A and 31B are rotated, the intermediate portion of the attached member 34 attached to the depth beams 31A and 31B is rotated in the arrow R direction around the pin 31a. As the intermediate portion of the mounted member 34 rotates, the tip of the mounted member 34 attached to the holding member 52 rotates in the direction of arrow R with the rotating member 38 as the rotation center.

Note that there are two rotation centers by the rotation operation, that is, the pin 31a, which is the rotation center of the depth beams 31A, 31B, and the rotation member 38, which is the rotation center of the holding member 52. The mounted member 34 slides in the direction of the arrow L in 36C, and the rotation bar 36B rotates in the hollow portion 36AA, thereby eliminating the distortion caused by the rotation of the depth beams 31A and 31B and the holding member 52. It is like that.
In this way, the adjustment handle 32 is rotated so that the bottom 33 b of the side ski 33 is in contact with the cultivation surface G.

By the way, as shown in FIG. 6, a drawer-like storage portion 55 may be provided at the end of the depth beam 31B of the rotary tiller 15 of the present invention. The storage portion 55 includes a drawer portion 55B and a lid portion 55A.
Moreover, as shown to Fig.7 (a), (b), the drawer | drawing-out part 55B may give a partition or may form in a cylindrical shape.

As described above, the rotary cultivator 15 according to the present invention is attached to the rear portion of the tractor (self-propelled machine) 10, cultivates the cultivated land G with the cultivating claws 17, and is provided with a bar-shaped cover provided in the side ski (work machine) 33. A work machine mounting portion 37 for rotatably mounting the tip of the mounting member 34 is attached, and a support member 36 is mounted on the depth beam 31B, and the support member 36 rotatably and slidably supports an intermediate portion of the mounted member 34. By doing so, the side ski 33 is attached. In addition, the work implement attachment portion 37 includes a cylindrical holding member 52, and the attached member 34 is inserted into and held in the cylindrical holding member 52. Furthermore, the support member 36 is provided so as to be rotatable with respect to the hook portion 36A1 attached to the depth beam 31B, the rotating portion 36A2 extending from the hook portion 36A1, and the rotating portion 36A2. A cylindrical support portion 36B is provided, and the attached member 34 is inserted into the cylindrical support portion 36B and slidably supported.

It is a schematic side view of the state which attached the side ski to the rotary tiller of this invention. FIG. 2 is an enlarged plan view near the main beam in FIG. 1. (A) is an enlarged side view of the supporting member vicinity of FIG. 1, (b) is an A arrow top view of (a). (A) is B arrow sectional drawing of FIG.3 (b), (b) is C arrow sectional drawing of FIG.3 (b). (A), (b) is a figure for demonstrating a mode that the adjustment handle is rotated and a side ski is rotated. It is a perspective view of the accommodating part with which the edge part of a depth beam is equipped. (A), (b) is a perspective view which shows another example of the accommodating part of FIG. It is a schematic side view of the state which attached the side ski to the conventional rotary tiller.

Explanation of symbols

10 Tractor (self-propelled aircraft)
DESCRIPTION OF SYMBOLS 11 Top link 12 Lower link 13 PTO axis | shaft 14 Universal rotation 15 Rotary tiller 16 Main body frame 17 Tillage nail | claw 17a Claw axis | shaft 18 Rotary cover 19 Rear cover 19a Reflection part (reflection member)
DESCRIPTION OF SYMBOLS 20 Rotating part 21 Main beam 21a Stay 22 Gear box 24 Adjust rod 25 Adjustment handle 26 Hanger rod 27 Rod stay 29 Upper arm 30 Adjust screw 31A, 31B Depth beam 32 Adjustment handle 33 Side ski (work machine)
33b Bottom surface 34 Mounted member 35 Fixing member (work machine mounting portion)
36 support member 36AA hollow part 36A1 hooking part 36A2 rotation part 36B rotation bar 36B1 sealing member 36C support part 37 work machine attachment part 38 rotation member (work machine attachment part)
42c Gear 43 Chain 50 Chain case 52 Holding member (work machine attachment)
55 Storage part 55A Cover part 55B Drawer part G Cultivated surface

Claims (3)

At the rotary cultivator attached to the rear of the self-propelled machine and cultivating the cultivated land with the cultivating claws,
While equipped with a work machine mounting portion for rotatably mounting the tip of a rod-like attached member provided in the work machine,
A support member attached to the depth beams, by the supporting member for supporting an intermediate portion of said member being attached rotatably and slidably, and wherein the mounting the work machine, a rotary tiller.   2. The rotary cultivator according to claim 1, wherein the work implement attachment portion includes a cylindrical holding member, and the attached member is inserted and held in the cylindrical holding member. A hook-shaped hook portion attached to the depth beam; a pivot portion extending from the hook portion; and a cylindrical support portion rotatably provided to the pivot portion. With
The rotary cultivator according to claim 1, wherein the attached member is inserted into the cylindrical support portion and slidably supported.

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