JPH10276503A - Covering structure for rotary power tiller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep the side face cover of a rotary power tiller at an optional rotating angle. SOLUTION: The side face cover 14 is fitting to the side edge of an upper face cover 18 through a hinge 24 in the state of being freely rotatable. In addition, a plate 34 integrally fixed to the cover 18, a plate 33 integrally fixed to the cover 14 and a brake disk 35 interposed between both plates are respectively made to face on the same core as the rotary shaft core of the hinge 24. Then fastening members 31 and 36 are provided for one plate 33 of both of the plates to freely adjust the facing interval of both of the plates 33 and 34 by the fastening members.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a rotary tilling device, and more particularly, to a structure in which an upper cover and a side cover that cover an upper portion and a side portion of a rotary tilling device can be adjusted in angle.

[0002]

2. Description of the Related Art In general, when a middle tillage rotary device is mounted on a management machine to perform a middle tillage operation, an upper surface cover covering an upper portion of the rotary tillage device is adjusted to an arbitrary angle around a longitudinal axis, and the upper surface cover is adjusted. Similarly, adjust the angle of the side cover attached to the cover around the longitudinal axis, guide the cultivated soil flipped up by the rotary tilling device in the lateral direction of the aircraft, and supply the cultivated soil to the root of the crop on the ridge Like that. In this case, in particular, it is assumed that the angle of the side cover can be easily adjusted, for example, Utility Model Registration No. 25127.
Japanese Patent Application Laid-Open No. 56-56, the use of Kikuza or Japanese Utility Model Application Publication No. 7-7683 using a friction plate is known.

[0003]

Among the above-mentioned known examples in which the side cover of the rotary tilling apparatus is capable of adjusting the angle freely, the one using the former chrysanthemum seat is disclosed in the latter publication. Subtle angle adjustment of the cover cannot be performed, and the angle adjustment takes time.
In addition, the latter using a friction plate is more advantageous than the former in that fine angle adjustment and quick angle adjustment can be performed, but on the other hand, in this case, one plate faces the other plate. Since the spring is biased, the compressive force against the friction plate is insufficient, and there is a problem that the side cover unexpectedly hangs down due to tilling vibration, adhesion of tilling soil, or the like. It is considered that the above problem can be solved by changing the biasing force of the spring to a stronger one.However, as described in the latter embodiment, a small-diameter spring is inserted into the pipe constituting the hinge of the side cover. If you try to increase the biasing force by inserting a large-diameter spring into the pipe instead of this, the hinge will become large and the practicality will increase. There is a problem that it becomes scarce.

[0004]

According to the present invention, an upper cover and a side cover which cover an upper portion and a side portion of a rotary tilling device are configured to be adjustable in angle around a longitudinal axis, respectively.
A rotary tilling device configured to guide a cultivated soil flipped up by a rotary tilling device downward or laterally by a top cover and a side cover, wherein the side cover is turned on a side edge of the top cover via a hinge. While being movably mounted, each is coaxial with the pivot axis of the hinge,
A plate integrally fixed to the top cover, a plate integrally fixed to the side cover, and a brake disk interposed between the two plates are exposed, and a fastening member is provided on one of the two plates, The above-described problem can be solved by making the facing space between the two plates adjustable by the fastening member, so that the side cover can be held at an arbitrary rotation angle by the frictional force of the brake disc with respect to the upper surface cover. Solve the point. Further, the fastening member provided on the one plate is constituted by a screw portion formed at an end of a shaft on which the plate is integrally fitted and a nut screwed on the screw portion, and a brake disk fitted on the shaft and the other The plate is fastened to the end face of one of the plates by the nut.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows an overall side view of a management machine equipped with a middle tillage rotary device for covering soil at the base of a crop while traveling in a furrow. Show. In FIG. 1, the management machine 1 includes an engine 2, a traveling mission case 3, left and right wheels 4, a steering wheel 5, and the like. A middle tillage rotary device 7 is connected to a hitch 6 at the rear of the management machine 1. In addition, the middle tillage rotary device 7
The power of the engine 2 is transmitted by a chain (not shown) provided in the connecting case 8. The rotary plow 7 includes a rotary frame 9, a rotary case 10, a tilling claw 11, a tail wheel 12, and the like. The top and both sides of the tilling claw 11 are covered by top covers 13, 13 and side covers 14, 14, respectively. The rear part is covered by a rear cover 15.

FIGS. 2 to 5 show the top covers 13 and 1 respectively.
3 shows the detailed structure of the side covers 14, 14, and the left and right top covers 13, 13 are rotated around the longitudinal axis through hinges 16 provided on the left and right of the rotary frame 9, as shown in FIG. The left and right main covers 17, 17 are movably mounted, and the sub-covers 18, 1 slidable in the left-right direction by being overlapped below the main covers 17, 17.
8. The sub-covers 18, 18
In order to slide the sub cover 18 in the left and right directions, as shown in FIG.
7, by pulling out from below,
18 can be scaled laterally in the range of a. Also,
As shown in FIG. 3, links 21 and 21 are provided on the upper surfaces of the left and right main covers 17 and 17 as fulcrum pins 21a and 21a, respectively.
The two links 21 and 21 are rotatably mounted around
The bolts of the knob 22 are engaged with the respective grooves 21c in the holes 21b, 21b formed on the rotary frame 9, and the knobs 22 are fastened to the screw holes of the bracket 23 fixed to the upper portion of the rotary frame 9, so that the respective b ranges can be set. The left and right main covers 17, 1
7 can be fixed by adjusting the angle.

Further, the left and right side covers 14,
Reference numeral 14 is attached rotatably around the axis in the front-rear direction via hinges 24 provided between the side edges of the sub-covers 18 and the upper edges of the side covers 14. As shown in detail in FIG. 5, the hinges 24 and 24 include front and rear pipes 27 and 28 fixed in the longitudinal direction of the backing plates 26 and 26 fixed to the lower surface of the sub-cover 18 by bolts 25. Pipes 30 fixed in the longitudinal direction of a backing plate 29 fixed to the back surface of the side cover 14 by bolts 25..., And these pipes 27, 28, 3
The shaft 31 is fixed to the pipe 30 fixed to the side cover 14 by a spring pin 32. A plate 33 on a disk is fixed to the end of the pipe 30 fixed to the side cover 14, and a plate 34 on the same disk is also fixed to the end of one pipe 28 fixed to the sub-cover 18, A brake disc 35 having the same diameter as these is interposed between the opposing plates 33, 34,
The shaft 31 penetrates a hole provided in the center of the brake disk 35 to prevent the brake disk 35 from falling off. The friction coefficient of the brake disk 35 is desirably 0.3 or more, and a material having weather resistance and ozone resistance is selected. A screw portion 31a is formed at the end of the shaft 31 on the brake disk 35 side.
Double nuts 36, 36 are mounted on 1a. Reference numeral 37 denotes a washer interposed between the nut 36 and the pipe 28. Instead of the washer of the embodiment, a spring washer or a disc spring may be used.

Next, the operation of this embodiment will be described.
When performing medium tillage work, the tillage claw 11 of the rotary tillage device 7
The top covers 13, 13 covering the upper part of the rotary tillage device 7, and the side covers 14, attached to the top covers 13, 13 so that the tilling soil flipped up by the cultivation is supplied to the root of the crop on the ridge. The work is performed by adjusting the angle of each of the 14. In this case, the angle adjustment of the upper covers 13, 13 loosens the knob 22, and any one of the grooves 21 c.
By engaging the bolt portion of the knob 22 with the knob 22 and tightening the knob 22 again, the upper covers 13, 13 can be adjusted to an arbitrary angle around the hinge 16 and fixed. Also, at this time, loosen the wing nut 20 so that the main cover 17,
It is also possible to pull out the sub-covers 18 from the 17 to an arbitrary position and fix them again. When adjusting the angles of the side covers 14, 14, the side covers 14, 1
When the user rotates the hinge 4 around the hinge 24 by hand,
The side covers 14, 14 can be turned at any angle over the range c against the frictional force between the plates 33, 34 and the brake disc 35. Then, when the middle plowing operation is started, the sliding of the brake disks 35, which hold the angles of the side covers 14, 14, is prevented by the compressive force of the two plates 33, 34, and the side surfaces of the brake disk 35 are vibrated by the tilling vibration or the adhesion of the tilling soil. The covers 14, 14 do not accidentally hang down. The compression force on the brake disk 35 can be easily adjusted by adjusting the nut 36 constituting the fastening member in advance. After the outer nut 36 serving as a lock nut is loosened, the other nut 36 is screwed into the shaft 31. If it tightens into the part 31a, the opposing distance of both plates 33 and 34 will become narrow, and the brake disk 3
The compression force on 5 increases.

[0009]

As described above, according to the present invention, the side cover 14 is rotatably attached to the side edge of the top cover 18 via the hinge 24, and is coaxial with the rotation axis of the hinge 24. A plate 34 integrally fixed to the top cover 18, a plate 33 integrally fixed to the side cover 14, and a brake disk 35 interposed between the two plates, respectively, are facing each other. Since the plate 33 is provided with fastening members 31, 31a and 36, and the spacing between the two plates 33 and 34 can be adjusted by the fastening members, the side cover 14 and the top cover 18 can be adjusted.
, Can be reliably held at an arbitrary rotation angle by the frictional force of the brake disk 35, and by the tilling vibration or the adhesion of soil, etc., as in the case where the frictional force of the brake disk is obtained by the conventional urging mechanism. Side cover 1
There is no such a problem that the device 4 unexpectedly hangs down. Further, a fastening member provided on one plate 33 is
The plate 33 is composed of a screw portion 31a formed at the end of a shaft 31 that is integrally fitted to the outside of the shaft 31 and a nut 36 that is screwed to the screw portion 31a.
When the nut 5 and the other plate 34 are fastened to the end surface of the one plate 33 by the nut 36, the drooping of the side cover 14 causes the hanging of the side cover 14 particularly with the end surface of the nut 36 indirectly fixed to the both covers 14 and 18. , The other plate 34 (the pipe 28 holding the plate 34 in the embodiment)
Of the brake disc 35, the frictional force of the fastening member is added to the frictional force of the brake disk 35, and the side cover 14 can be reliably rotated at an arbitrary rotation angle with respect to the upper surface cover 18. Can be held.

[Brief description of the drawings]

FIG. 1 is an overall side view of a management machine equipped with a middle tillage rotary device.

FIG. 2 is a plan view of a rotary cover.

FIG. 3 is a sectional view taken along line AA of the rotary cover.

FIG. 4 is a sectional view taken along line BB of the rotary cover.

FIG. 5 is a plan view partially illustrating a hinge portion of the side cover.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 management machine 7 rotary tillage device 13 top cover 14 side cover 24 hinge 28 pipe 31 shaft 33 plate integral with side cover 34 plate integral with top cover 35 brake disc 36 nut

Claims (2)

[Claims] An upper cover and a side cover which cover the upper part and the side part of the rotary tilling device are configured to be adjustable in angle around a longitudinal axis, respectively, and the tilling soil flipped up by the rotary tilling device is used as the upper cover and the side surface. A rotary tilling device adapted to be guided in a downward or lateral direction by a cover, wherein a side cover is rotatably attached to a side edge of the upper cover via a hinge, and is coaxial with a rotation axis of the hinge. A plate fixed integrally to the top cover, a plate fixed integrally to the side cover, and a brake disk interposed between both plates are exposed on the core, and one of the two plates A fastening member is provided, and the distance between the two plates is made adjustable by the fastening member. A cover structure of a rotary tilling device that can be held at an arbitrary rotation angle by the frictional force of a disc. 2. The brake disk according to claim 1, wherein the fastening member provided on the one plate comprises a screw portion formed at an end of a shaft for externally fitting the plate and a nut for screwing the screw portion. And the other plate,
The cover structure for a rotary tillage device according to claim 1, wherein the nut is fastened to an end surface of one of the plates by the nut.