JPH0753443Y2 - Rotary cover device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a rotary cover device in a rotary tiller.

(Prior Art) In a rotary tiller, cutouts are provided on both sides of the rear end of the leveling cover located behind the rotary tillage, and an auxiliary cover that covers the cutouts is detachably attached to the leveling cover. In some cases, when using a single cultivator, or when using the gauge wheel in the plowing width, the auxiliary covers are removed and these are arranged in the notches.

(Problems to be solved by the invention) Conventionally, the auxiliary cover is fixed on the leveling cover with lap bolts or the like, but when the leveling pressure acts on the outer end side of the auxiliary cover, The cover flexed easily and could not be leveled sufficiently. This is because the outside of the auxiliary cover was not sufficiently supported.

In view of the above problems, the present invention has an object to securely support the outer end side of the auxiliary cover by using a fixing bracket, and to easily attach and detach the auxiliary cover. The purpose is to make it possible to use the fixing metal fittings also for mounting the flap cover.

(Means for Solving the Problems) The present invention provides notches 22 on both sides of the rear end of the leveling cover 9 arranged at the rear of the rotary tilling part 4 and leveling an auxiliary cover 23 that covers the notch 22. In the rotary cover device detachably provided on the cover 9, an insertion hole 27 is provided at a rear end portion of the auxiliary cover 23, and the leveling cover 9 is inserted into the insertion hole 27.
It is provided with a metal fitting 30 having a horizontal shaft 11 which is insertably inserted from the outer side in the left-right direction, and is provided with a fixing tool 32 for fixing the front end of the fixing metal fitting 30 together with the auxiliary cover 23 to the leveling cover 9. In addition, the horizontal shaft 11 is removably inserted into the mounting arm 36 of the flap cover 12 connected to the rear of the leveling cover 9.

(Operation) In the auxiliary cover 23, the horizontal shaft 11 of the fixing member 30 is inserted into the insertion hole 27, and the front end side of the fixing member 30 is fixed to the leveling cover 9 together with the auxiliary cover 23 by the fixing tool 32. Therefore, the fixing metal fitting 30 can reliably support the outer end side of the auxiliary cover 23, and a sufficient leveling action can be obtained.

At this time, when attaching the flap cover 12, its mounting arm 30
The flap cover 12 can be connected by inserting the horizontal shaft 11 into the.

When removing the horizontal cover 11 of the fixing bracket 30 when removing the auxiliary cover 23, remove the fixing tool 32 and hold the fixing bracket 30 to hold the horizontal shaft 11 in place.
By operating up and down around it, it is possible to easily remove even if there is a bite of mud or the like.

(Embodiment) Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment. The drawings illustrate a rotary tiller for mounting a tractor. First
In FIGS. 2 and 2, reference numeral 1 denotes a rotary machine frame, which has a transmission case 2 and the like, and is mounted on a tractor via a three-point link mechanism 3. Reference numeral 4 denotes a rotary tiller, which has a pawl shaft 5 supported by the transmission case 2 and a tiller pawl 6 provided on the pawl shaft 5. Reference numeral 7 denotes a rotary cover, an upper cover 8 arranged on the upper side of the rotary tiller 4, a leveling cover 9 arranged on the rear side, side covers 10 arranged on both left and right sides,
At the rear end of the leveling cover 9, there is a flap cover 12 connected by a horizontal shaft 11. The upper cover 8 is fixed to the rotary machine frame 1, and the leveling cover 9 is attached to the upper cover 8 in a lateral pivotal direction.
It is pivotally mounted at 13 so that it can move up and down, and is urged downward by a pair of right and left lowering mechanisms 14 provided between it and the rotary machine frame 1. The side cover 10 is fixed to the upper cover 8 and the like. Reference numeral 15 denotes a gauge wheel, which is arranged on both sides of the rear end portion of the gauge support frame 16 protruding rearward from the rotary machine frame 1.

As shown in FIGS. 3 and 4, the leveling cover 9 has a pair of left and right reinforcing ribs 17 on the upper surface side, and the leveling cover 9 is pivoted to the upper limit position at the front end of the reinforcing ribs 17. When I let
Stopper 19 so that it contacts the reinforcing plate 18 of the upper cover 8.
Is provided.

At the rear end of the leveling cover 9, the plate member is bent to integrally form a leveling portion 20 and a curved surface portion 21 as shown in FIG. It has an arc shape with the center.

As shown in FIG. 3 and FIG. 6, cutouts 22 are provided on the left and right sides of the rear end of the leveling cover 9 so that the single cultivator and the gauge wheel 15 can be appropriately arranged according to the work purpose. Notch
22 is usually closed by an auxiliary cover 23.

As shown in FIGS. 8 and 9, the auxiliary cover 23 has
The leveling portion 20 and the curved surface portion 21 of the leveling cover 9 are provided with a leveling portion 24 and a curved surface portion 25 that are flush with each other, and a cylindrical body is provided in the bent portion.
26 are provided. As shown in FIG. 7, the cylindrical body 26 has an insertion hole 27 for inserting the horizontal shaft 11 from the outside in the left-right direction and a shaft portion 28 protruding inward in the left-right direction. The shaft portion 28 is removably inserted into a tubular body 29 provided in a bent portion at the rear end of the leveling cover 9, and at the time of insertion, the leveling planes 20 and 24 between the leveling cover 9 and the auxiliary cover 23 and curved surfaces. Part 21,
25 matches.

The horizontal axis 11 is a fixing metal fitting that is brought into contact with the outer edge of the auxiliary cover 23.
It is fixed to the rear end of 30. The fixing bracket 30 is shown in FIG.
As shown in FIG. 10 and FIG. 11, in addition to the horizontal shaft 11, there is a mounting piece 31 on the front end side, and this mounting piece 31 is fixed along with the auxiliary cover 23 and the leveling cover 9 by a fixing tool 32 such as a knob bolt. It is detachably fixed to the upper surface side of. The auxiliary cover 23
The bolts and nuts 32 are also detachably fixed to the leveling cover 9. 34 is a mounting hole for the auxiliary cover 23.

A notch 35 is formed on the outer side of the rear end of the auxiliary cover 23 so that a gap is formed between the auxiliary cover 23 and the fixing bracket 30, and a pair of left and right mounting arms 36 of the flap cover 12 are fitted to the horizontal shaft 11 at the notch 35. It is fitted. That is, the flap cover 12 has a mounting arm 36 that also serves as a reinforcement at a position corresponding to the cutout portion 35, and the mounting arm 36
The horizontal shaft 11 is removably inserted into a hole 37 formed in the projecting end portion of 36.

The flap cover 12 has the same width as the leveling cover 9 and is formed in an arc shape as a side view as a whole. Further, as shown in FIG. 5, the plate member is bent at the front end side of the flap cover 12 so that the curved surface portions 38 concentric with the curved surface portions 21 and 25 of the leveling cover 9 and the auxiliary cover 23 rise upward. Are formed integrally with each other, and the gap between the curved surface portions 21 and 25 and the curved surface portion 38 is set to be extremely small.

The flap cover 12 is adjustable in angle around the horizontal axis 11 by the angle adjusting means 39. There are a pair of left and right angle adjusting means 39,
It is configured as shown in FIGS. 2 to 4. That is,
The adjusting means 39 has an adjusting rod 42 having a long support shaft portion 40 at one end and a short engaging portion 41 formed at the other end by bending, respectively.
A U-shaped handle 43 is provided at the end of the shaft 42 on the side of the support shaft 40. The support shaft 40 is inserted into two reinforcing plates 45 connecting the curved surface portion 38 and the bent portion 44 of the flap cover 12 so as to be slidable in the lateral direction and rotatable about the shaft center. The engaging portion 41 is urged in the engaging direction. The engaging portion 41 is engageable with and disengageable from a plurality of engaging holes 47 formed in the reinforcing ribs 17 of the leveling cover 9. By selecting the engaging holes 47 to be engaged, the leveling cover is selected. The angle of the flap cover 12 with respect to 9 changes.

In the above structure, the pair of left and right auxiliary covers 23 is a fixing bracket.
Leveling cover 9 with 30, fixing tool 32, bolts and nuts 33, etc.
It is fixed to. In this case, especially the horizontal axis of the fixing bracket 30
Since 11 is inserted into the hole 27 of the cylindrical body 26 and the shaft portion 28 of the cylindrical body 26 is inserted into the cylindrical body 29 of the leveling cover 9, the support of the rear outer end side of the auxiliary cover 23 is ensured. As with the leveling cover 9, a sufficient leveling action can be obtained.

Further, since the flap cover 12 is attached by using the horizontal axis 11 of the fixing metal fitting 30, the cost can be reduced by sharing the parts.

When adjusting the angle of the flap cover 12, the handle 43 is grasped and pulled in the direction of the arrow A in FIG.
After removing from the engaging hole 47 of the reinforcing rib 17,
Rotate 12 around horizontal axis 11. In this case, if the adjusting rod 42 is rotated around the support shaft 40 as shown by the phantom line in FIG. 4, the adjusting rod 42 will remain in that position due to the frictional resistance of the spring 46, and will rotate in an unstable manner. There is nothing to do. Next, by engaging the engaging portion 41 of the adjusting rod 42 with the engaging hole 47 at a position where the flap cover 12 has an appropriate angle, the flap cover 12 can be fixed so as not to rotate.

During work, the leveling cover 9 and flap cover 12 have a lowering mechanism.
It is urged downward at 14 to level the cultivated land evenly.

When removing the auxiliary cover 23 or the flap cover 12, after removing the fixture 32, hold the front end side of the fixture 31 and reciprocate up and down around the horizontal axis 11 as shown by the arrow B in FIG. A force is applied outward (indicated by the arrow C), and the horizontal shaft 11 is pulled out from the hole 27 of the cylindrical body 26. With this configuration, even when mud or the like is caught between the horizontal shaft 11 and the cylindrical body 26, the horizontal shaft 11 can be easily removed.

The same applies when removing the shaft portion 28 from the tubular body 29.

The leveling cover 9 moves up and down depending on the amount of tilling soil, but when it reaches the upper limit, the stopper 19 causes the upper cover 8 to move.
It contacts the reinforcing plate 18 on the side. Therefore, even when the vertical movement of the leveling cover 9 is detected by the sensor, the sensor is not damaged due to the leveling up of the leveling cover 9 too much.

In the embodiment, a center drive type rotary tiller is shown, but a side drive type may also be used.

Further, the horizontal shaft 11 may be inserted into the tubular body 29, in which case the shaft portion 28 can be omitted.

(Effect of the Invention) According to the present invention, the insertion hole 27 is provided at the rear end portion of the auxiliary cover 23, and the horizontal hole that can be inserted into and removed from the flat cover 9 from the outer side in the left-right direction. Since the metal fixture 30 having the shaft 11 is provided and the fixture 32 for fixing the front end of the fixture metal 30 to the leveling cover 9 together with the auxiliary cover 23 is provided, the outer end side of the auxiliary cover can be reliably supported, The horizontal cover 11 is easy to insert and remove, and the auxiliary cover 23
Can be easily attached and detached.

Further, in the present invention, the horizontal shaft 11 is removably inserted into the mounting arm 36 of the flap cover 12 connected to the rear of the leveling cover 9, so that the horizontal shaft 11 of the fixing bracket 30 can be used to easily flap. The cover 12 can be attached.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a side view of a rotary tiller, FIG. 2 is a perspective view of a part of a rotary cover device, FIG. 3 is a rear view of the same, and FIG. IV-IV arrow sectional view of FIG. 5, FIG. 5 is an enlarged sectional view taken along the line VV of FIG. 3, FIG. 6 is a perspective view of the auxiliary cover mounting portion, FIG. 7 is a sectional plan view of the same, and FIG. Is a plan view of the auxiliary cover, FIG. 9 is a side view of the same,
FIG. 10 is a plan view of the fitting, and FIG. 11 is a side view of the same. 4 ... Rotary tiller, 9 ... Leveling cover, 11 ... Horizontal shaft, 12 ... Flap cover, 22 ... Notch, 23 ... Auxiliary cover, 26, 29 ... Cylindrical body, 27 ... Insert Hole, 30 ... Fixing bracket, 32 ... Fixing tool, 36 ... Mounting arm.

Front page continuation (72) Kazumi Umeki 64, Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Iron Works Co., Ltd., Sakai Factory (72) Inventor Takagi, 64, Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Iron Works Co., Ltd., Sakai Factory (72) Creator Tsuneno Kimihide 64, Ishizukitamachi, Sakai City, Osaka Prefecture, Kubota Iron Works Co., Ltd., Sakai Factory (72) Creator Takaaki Ohno, 64, Ishizukitamachi, Sakai City, Osaka Prefecture, Kusakada Iron Works Co., Ltd. (56) Reference References Shown 61-100912 (JP, U) Shown 61-173204 (JP, U) Shown 64-11604 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A notch (22) is provided on both sides of a rear end of a leveling cover (9) arranged at the rear of a rotary tiller (4), and an auxiliary cover (23) for closing the notch (22) is provided. A rotary cover device detachably provided on the leveling cover (9), wherein an insertion hole (27) is provided at a rear end of the auxiliary cover (23),
A metal fitting (30) having a horizontal shaft (11) is inserted into the insertion hole (27) from the outside in the left-right direction of the leveling cover (9), and the fitting (30) is provided. A fixing tool (32) for fixing the front end portion to the leveling cover (9) together with the auxiliary cover (23) is provided, and a mounting arm (of a flap cover (12) connected to the rear of the leveling cover (9) ( 36) A rotary cover device in which the horizontal axis (11) is inserted into and removed from the 36).