JPH064648Y2 - Forward / reverse rotary cultivating device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is applied to a forward / reverse rotary tiller.

[Prior Art] Conventionally, the tooth body arranged inside the rear cover of the forward / reverse rotary tiller has been integrally formed in the width direction.

[Problems to be solved by the invention] When performing ridge work, it is necessary to attach the cultivator to the toolbar of the rotary tiller so that the cultivator protrudes downward from the central cutout portion of the rear cover. As mentioned above, since the tooth body is integrally formed in the width direction inside the rear cover, this may be an obstacle when attaching the cultivator, and the tooth body has to be removed each time. It was

[Means for Solving Problems] The present invention is proposed for solving the problems of the above-mentioned prior art, and the following technical means have been taken.

That is, in the forward / reverse rotary cultivating device in which a tooth body is swingably attached to the rear of the forward and backward cultivating part and a rear cover is rotatably supported behind the tooth body, the cultivating body is approached. The tooth body is fixed to the rotary cover at a position, and the tooth body can be swung back and forth together with the rear cover at a position far from the tillage body.The tooth body is wide and the number of teeth is large. It is characterized in that it is divided into a large number of central tooth bodies and side tooth bodies located on both sides of the central tooth body that are narrow and have a smaller number of teeth than the central tooth body, and that these can be independently attached and detached. Tooth structure in the forward / reverse rotary tiller.

[Operation] When the field is roughly tilled using the forward / reverse rotary tiller connected to the machine, the tiller shaft is rotated counterclockwise and the tooth body is rotated rearward to be integrated with the rear cover. Attach to rotate with. When the cultivating work is performed in this state, the earth mass thrown backward by the cultivating claws is crushed by the tooth body and leveled by the rear cover almost at the same time.

And when performing ridge work at the same time as reverse cultivating,
First, the tooth body at the center is removed, and the side tooth bodies located on the left and right sides of the tooth body are fixed while being brought close to the plowing claw side. Then, the cultivator is attached to the toolbar of the rotary cultivator so that the cultivator projects downward from the central cutout portion of the rear cover, and the cultivator shaft is rotated in the counterclockwise direction.

When reverse cultivating work is performed in this state, the soil cut by the tilling claw moves along the inside of the rotary cover, is finely crushed in the meantime, and is divided into left and right by the soil cultivator just before the rear cover to form ridges. .

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings. First, the structure will be described. A forward / reverse rotary cultivator is connected to the rear part of the body of the agricultural tractor so as to be vertically movable.

A forward / reverse change mechanism (not shown) and a bevel transmission mechanism (not shown) are installed in a main transmission case 2 projecting an input shaft 1 that receives power from a PTO shaft at the rear of the machine body, and a cylindrical body 3 is provided on the left and right of the main transmission case 2. 3 is provided in a protruding manner, a side chain case 4 is provided at the outer end of the left cylinder 3, and is connected to receive power from the main transmission case 2 via an intermediate shaft (not shown) installed in the cylinder 3. Then, it is laid horizontally on the lower part of the side chain case 4 and horizontally laid on the lower part of the cultivating drive shaft (not shown) protruding inward and the side support (not shown) provided at the outer end of the right side cylinder 3. A cultivating shaft (not shown) having a forward / reverse cultivating claw (not shown) is attached via a mounting flange (not shown) between the cultivating passive shaft (not shown) protruding inward.

The upper part of the cultivating shaft is covered with the rotary cover 5, and the left and right tooth body posture control levers 7, 7 are fixed to the rotating horizontal shaft 6 provided at the rear end of the rotary cover 5, and the tooth body posture control lever 7 is attached. The upper mounting plate 9 is fixed to the base end mounting portions 8 of 8 and 7, and a wide split central tooth body 11 is provided between the upper mounting plate 9 and the lower mounting plate 10, and the split center is provided on both sides thereof. The divided side tooth bodies 12, 12 having a width narrower than that of the tooth body 11 and approximately half the width thereof are arranged and fastened together with the bolts 13, 13 to form a tooth body 14.

Further, an upper end of a rear cover 15 located on the rear side of the tooth body 14 is attached to the rotating horizontal shaft 6 and is supported so as to be swingable back and forth.

Further, upper brackets 17 and 17 having locking holes 16 and 16 are provided at the rear portion of the rotary cover 5 facing the tooth body posture control levers 7 and 7, and the rear cover 15 is provided.
Lower bracket 1 having locking holes 18, 18 in the upper part of the
9 and 19 are provided.

The tooth body posture control levers 7 and 7 have the locking holes 16 and 1, respectively.
The long rods 22, 22 of the U-shaped locking rods 21, 21 having the locking portions 20, 20 for engaging with 6, 18, 18 are elastically urged in the retracting direction via the compression springs 23, 23. Installed.

Then, the lower side 24 is provided at the center of the rear cover 15 in the left-right direction.
A triangular notch 25 having a bottom is provided, and a triangular lid 26 is detachably attached to the notch 25.

Plate-shaped brackets 27, 2 attached to the cylinders 3, 3
7, a support arm 29 having a tool bar 28 at the rear end,
The front end of 29 is pivotally supported by pins 30 and 30. And
The hitch portion 31 of the toolbar 28 has a support shaft 33 of the pottery 32.
When the cultivating tool 32 is attached to the cutout 25 and the cultivating tool 32 is projected downward, the cultivating tool 32 is configured to be in a position close to the tilling claw while the divided central tooth body 11 is removed. A tail wheel is attached to the attachment shaft cylinders 34, 34 provided at both the left and right ends of 28.

In addition, 35 is a PTO projectingly provided at the rear of the main transmission case 2.
The shafts 36, 36 are trapezoidal lids attached to the lower left and right sides of the rear cover 15. Next, the configuration of the forward / reverse rotary shown in FIGS. 4 to 6 will be described.

The divided side tooth bodies 37, 37 attached to both the left and right sides of the divided central tooth body 11 are provided with an interval A in which one tooth body 38 is omitted on the left and right outer portions. Further, trapezoidal notches 40, 4 are provided at the left and right corners of the rear cover 39.
0 is formed. In the normal state, this notch 4
The trapezoidal lids 36, 36 are detachably attached to 0, 40.

When attaching the one-sided pottery 41, as shown in FIG. 5, the support shaft 42 of the one-sided pottery 41 is inserted into the left cylinder 3 from below, and the tip of the one-sided pottery 41 is attached to the left divided side tooth body 37. A turnbuckle 43 connects the left cylinder 3 and the left mounting shaft cylinder 34 so as to be positioned at the interval A.
Reference numeral 44 is a drainage groove.

Next, the operation will be described. When the field is to be cultivated tillage, the cultivator 32 or the single cultivator 41 is removed from the tool bar 28, the tail wheels are attached to the attachment shaft cylinders 34, 34, and the locking rods 21 of the tooth body posture control levers 7, 7 are attached. 21 to disengage the engaging portions 20, 20 from the upper brackets 17, 17, and to disengage the engaging portions 20, 20 from the lower brackets 19, 19.
The tooth body 14 is engaged with the engaging holes 18, 18 of the rear cover 15 and 39 to rotate up and down integrally with the rear covers 15, 39. When the tiller shaft is rotated clockwise in this state and the aircraft is run, the tiller claws are driven into the soil in front of the tiller shaft, and the cut soil mass is thrown rearward and the tooth body 1
It is crushed by hitting 4 and the rear covers 15 and 3 on the soil.
At 9, flattening is carried out.

Further, when performing the erecting work, the tail wheel is removed from the tool bar 28 as shown in FIGS. 1 to 3, and the locking rods 21, 21 of the tooth body posture control levers 7, 7 are attached to the upper bracket 17, The tooth body 14 is fixed by approaching the forward and reverse tillage claws by locking the locking holes 16 of the teeth 17.

Then, the divided central tooth body 11 is removed, the triangular lid 26 of the rear cover 15 is further removed, and the cultivator 32 is attached to the hitch portion 31 of the tool bar 28 so that the tip approaches the cultivating claw, and the cultivating shaft is rotated in the reverse direction. . When the machine is advanced in this state, the plowing claws cut the soil from the lower side to the upper side in order to rotate in the counterclockwise direction, while moving the plowed soil along the inside of the rotary cover 5. The soil is crushed, and the soil that is moving is shunted to the left and right by the subsequent cultivator 32, and ridges are formed here.

When digging the drainage ditch 44 along the ridge of the field,
As shown in the figure, the tooth body 14 is fixed in a state of being brought close to the tilling claw, and instead of the tail wheel on the left side of the toolbar 28, the single cultivator 41 is attached to the toolbar 28 so that its tip approaches the tilling claw. . When the body is advanced while reversing the tiller, the soil is finely ground by the tiller and the drainage groove 44 is formed on the left side.

[Advantage of the Invention] Since the present invention is configured as described above, it is possible to easily switch between normal tillage tillage work and reverse tillage tillage work, and since the tooth body is divided into three, for example, a pottery or In the case of performing the ridge work by attaching the one-sided pottery to the rear part of the tiller, it is sufficient to remove only the tooth body immediately before the pottery device, and it is not necessary to remove one tooth at a time. Compared to this, the time can be shortened significantly.

Further, since the tip of the cultivator can be brought close to the cultivating part, it is possible to immediately divert the flowing fine soil thrown backward by the cultivating claw by the cultivator to improve the ridge performance.

In addition, since the rearward protruding amount of the pottery is small, the overhang amount of the machine body is small, which facilitates the turning operation at the edge of the ridge, and has the characteristic that the running stability is increased.

[Brief description of drawings]

FIG. 1 is a plan view of a tooth body divided into three parts, and FIG. 2 is a plan view of a forward / reverse rotary tiller equipped with a cultivator.
FIG. 3 is a side view thereof, FIG. 4 is a side view of the tooth body, and FIG.
The figure is a plan view of a state in which a single cultivator is attached to a forward / reverse rotary tiller, and FIG. 6 is a side view thereof. Explanation of symbols 1 …… Input shaft 2 …… Main transmission case 4 …… Side chain case 5 …… Rotary cover 7 …… Tooth body posture control lever 11 …… Divided central tooth body 12 …… Divided side tooth body 14… … Tooth body 32 …… Cultivator 41 …… One-side crater

Continuation of the front page (56) References Open 61-60604 (JP, U) Open 60-41108 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A forward / reverse rotary cultivating device comprising a tooth body attached to the rear of a tilling portion for normal and reverse rotation so as to be capable of swinging back and forth, and a rear cover rotatably supported behind the tooth body. The tooth body is fixed to the rotary cover at a position close to the cultivated body, and the tooth body can be swung back and forth together with the rear cover at a position far from the cultivator body. The central tooth body with a large number of teeth and the side tooth body located on both sides of the central tooth body with a narrow width and a smaller number of teeth than the central tooth body are divided and configured so that they can be independently attached and detached. The tooth body in the characteristic forward / reverse rotary tiller.