JP3560784B2 - Rotary rear cover device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a rotary tilling device mounted behind an agricultural work vehicle, and more particularly, to a rotary rear cover device mounted on a rear portion of a rotary cover.
[0002]
[Prior art]
BACKGROUND ART Conventionally, when a rotary rear cover is attached to a rear part of a rotary cover, a rotary support of the rear cover directly provided at a rear end of the rotary cover without an intermediate cover is already known.
[0003]
[Problems to be solved by the invention]
In the case of the well-known type in which the rotation fulcrum of the rear cover is directly provided at the rear end of the rotary cover, the rotation fulcrum of the rear cover is independently rotated in the front-rear direction and the vertical direction. Although it could be adapted to work and scratching work, it was not possible to keep the position of the rear cover extremely high as in the case of the work of mounting a ridge or a multi-shaping tool.
[0004]
Then, an object of the present invention is to be able to hold the position of the rear cover not only at the time of general tilling work and substituting work, but also at the time of mounting work of a ridge or a multi-shaping tool.
[0005]
[Means for Solving the Problems]
The present invention has been made in view of the above-described circumstances, and the invention according to claim 1 is that an upper part and a rear part of a tilling shaft (12) on which a tilling claw is fixed are provided by a rotary cover (14) and a rear part thereof. In a rotary rear cover device covered with a rear cover (17),
The rotary cover (14) has a top plate (14a) that covers the upper side of the tilling shaft (12) and left and right side plates (14d, 14d) that cover an axial end of the tilling shaft (12). ,
The top plate of the intermediate cover (16) provided on the front and rear intermediate the (14a) and said rear cover (17), the rotary cover (14) and intermediate cover (16), and said intermediate cover (16) and rear cover (17) Are pivotally supported, and
A shaft (21) fixed to the left and right side plates (14d, 14d) and supporting a front portion of the intermediate cover (16), and an engaging pin provided at a rear portion of the intermediate cover (16) so as to be freely retractable. A plurality of holes (23) are formed on the left and right side plates (14d, 14d) so that the opposing positions of the engagement pin (23) and the engagement pin (23) can be visually recognized. 27, 28), the operation of inserting and removing the engaging pin (23) provided on the intermediate cover (16) side, and the vertical movement of the intermediate cover (16) in a state where the engaging pin (23) is removed from the hole. A handle (22) capable of moving its position,
By selectively inserting / removing the engagement pin (23) into any of the plurality of holes (27, 28) with the handle (22), the intermediate cover (16 ) is attached to the rotary cover (14). the) and pivot point for connecting the rear cover (17) and movable selectively vertically, it is characterized.
The invention according to claim 2, characterized in rotary rear cover device according to claim 1, the upper surface of the intermediate cover (16), a rear cover to become provided (17) force adjusting bracket (25) against And
[0006]
(Action)
With the above structure, during the general tilling work and the substituting work, the rotation fulcrum of the intermediate cover (16) and the rear cover (17) is selectively selected and fixed to the lower position (28), and the ridge stand and the multi-shaping device are attached. Occasionally, by selectively fixing the pivots of the intermediate cover (16) and the rear cover (17) to the upper position (27), the optimal position of the rear cover (17) for any work can be secured.
[0007]
Further, even when the angle of the rear cover (17) changes while the rotation fulcrum of the intermediate cover (16) and the rear cover (17) is selected and fixed at the optimum position, the pressing force is adjusted on the upper surface of the intermediate cover (16). Since the bracket (25) is provided, the applied pressure to the ground can be always kept constant, so that it is not necessary to adjust the applied pressure.
[0008]
In addition, although the code | symbol in a parenthesis mentioned above contrasts with drawing, it does not limit the structure of this invention at all.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0010]
1 to 3, a rotary 3 is attached to the rear of a tractor 1 via a three-point link and an auto hitch 2 so as to be able to move up and down.
[0011]
A gear case 5 is provided at a central portion of the rotary 3, and a boomerang-shaped top mast 4 is fixedly provided on an upper portion of the gear case 5. A front upper portion of the top mast 4 is connected to the auto-hitch 2 via a connecting portion. In the upper rear part of the mast 4, a screw-type adjusting device 7 for adjusting a toolbar 6 for mounting a tail wheel or a ridge is pivotally supported.
[0012]
As shown in FIG. 4, a pair of left and right arms 8 and 9 are fixed to both sides of the gear case 5, a chain case 10 is fixed to the left end, and a U-shaped side plate 11 is fixed to the right end. It is fixed.
[0013]
A tilling shaft 12 having a plurality of tilling claws fixed is supported by a driving-side bearing portion below the chain case 10 and a passive-side bearing bracket 13 fixed below the side plate 11, and a transmission device in the chain case 10. Driven by
[0014]
The rotary cover 14, as shown in FIGS. 1 to 3 and 4, an arc-shaped top plate 14a that covers the upper side of the cultivating shaft 12, the reinforcing plate of the front and rear ends of the top plate 14a (not shown), and The left and right side surfaces are composed of side plates 14d , 14d as left and right side plates each having a substantially sector shape. The side plates 14d, 14d cover the axial end of the tilling shaft 12.
[0015]
A metal 15 which is fitted to bearings at both ends of the tilling shaft 12 is provided at a portion corresponding to a pivot at a lower portion of the side plate 14d so as to be rotatable back and forth.
[0016]
The rear end portion of the rotary cover 14, i.e. before and after an intermediate position between the rear cover 17 to be described later and the top plate 14a described above, an intermediate cover 16 of the bag-shaped cross section is pivotally rotatably, after the intermediate cover 16 A rear cover 17 is rotatably mounted on the end. As a result, the rotary cover 14 and the intermediate cover 16 and the intermediate cover 16 and the rear cover 17 are rotatably supported.
[0017]
By rotating the operation lever 18 provided on the top mast 4 back and forth, the rotary cover 14 , the intermediate cover 16, and the rear cover 17 are integrally rotated back and forth around the tilling shaft 12 via the bracket 19 and the rod 20. It is possible to move.
[0018]
Intermediate cover 16, as shown in FIGS. 5 and 6, is supported by Jikukin 21 which is fixed to the front on the left and right side plates 14d, as lifting engaging pin retractable in its rear ends A lock pin 23 is provided. Upper and lower holes 27 and 28 are formed on the left and right side plates 14d and 14d so as to be visible at positions facing the lock pin 23 so as to be visible. The lock pin 23 can be engaged with the hole 28. Further, on the side of the intermediate cover 16, a handle 22 is provided which can move the lock pin 23 up and down and move the intermediate cover 16 up and down with the lock pin 23 removed from the upper hole 27 or the lower hole 28. . Then, by operating the handle 22, the lock pin 23 is selectively fixed to the upper hole 27 or the lower hole 28 provided above the side plate 14d, and the vertical position of the intermediate cover 16 is moved.
[0019]
A pressure adjusting bracket 25 is fixed to two places on the upper surface of the intermediate cover 16 and holds the rear cover 17 via a rod 24.
[0020]
Next, the operation of the present embodiment will be described.
[0021]
By rotating the operation lever 18 forward based on the above structure, the rotary cover 14 is integrally rotated forward around the tilling shaft 12 to be in the general tilling operation posture, and the pocket under the rear cover 17 is set. As the soil becomes narrower and the amount of soil rotation increases, the finish after tillage becomes even.
[0022]
When the handle 22 is operated while the rotary cover 14 is rotated forward, the lock pin 23 is set in the upper hole 27 of the side plate 14d, and the intermediate cover 16 is selectively fixed at a position rotated upward. The lower pockets are widened and the soil is easy to spill to the rear, providing a posture suitable for work with ridges and multi-shapes or for deep tillage in fields.
[0023]
In addition, by rotating the operation lever 18 backward, the rotary cover 14 integrally rotates around the tilling shaft 12 backward, and the handle 22 is operated to lock the lock pin 23 into the lower hole 28 of the side plate 14d. When it is set and the intermediate cover 16 is rotated downward, the rear cover 17 covers the lower part to a lower position, and a posture suitable for surrogate cultivation and extremely shallow tilling work can be obtained.
[0024]
In any of the above cases, the rear cover 17 is connected to the intermediate cover 16 via the rod 24 and rotates integrally with the intermediate cover 16, so that the pressure applied to the rear cover 17 is always constant, and every time the angle of the rear cover 17 is changed. There is no need to adjust the pressure.
[0025]
【The invention's effect】
The present invention, the intermediate cover is provided around the middle of the top plate and the rear cover of the rotary cover covering the tilling shaft, the rotary cover and intermediate cover, and each of the intermediate cover and the rear cover as well as rotatably supported, the right and left side A shaft fixed to the face plate and supporting the front part of the intermediate cover, an engaging pin provided at the rear part of the intermediate cover so as to be able to protrude and retract, and a position facing the engaging pin is visible on the left and right side plates. A plurality of holes formed so as to be able to be engaged with the engagement pins, and an insertion / removal operation of the engagement pins provided on the intermediate cover side and a vertical movement of the intermediate cover in a state where the engagement pins are removed from the holes. It has a handle that can move the position, and the engagement pin at the handle to selectively inserted into and removed from any of the plurality of holes, with respect to the rotary cover, and the said intermediate cover rear cover The pivot point for connecting, and movable selectively vertically, and the upper surface of the intermediate cover, since it is configured such that by providing a pressure adjustment bracket relative to the rear cover, the position of the rear cover, generally tilling and The optimal position can be maintained not only during the scraping work, but also when installing the ridger or multi-shaping device, and it is no longer necessary to adjust the pressing force every time the rear cover angle is changed.
[Brief description of the drawings]
FIG. 1 is a side view of a tractor and a rotary during a general tilling operation.
FIG. 2 is a side view of a tractor and a rotary at the time of erection work.
FIG. 3 is a side view of a tractor and a rotary during a scraping operation.
FIG. 4 is a rear view of the rotary.
FIG. 5 is a partially enlarged view of a pivot point of the intermediate cover.
FIG. 6 is a perspective view of a pivot point of the intermediate cover.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Tractor 3 Rotary 12 Tilling shaft 14 Rotary cover 16 Intermediate cover 17 Rear cover 27 Upper hole 28 Lower hole

Claims (2)

In a rotary rear cover device in which a cultivating claw is fixed above and below a cultivating shaft with a rotary cover and a rear cover behind the rotary cover,
The rotary cover has a top plate that covers the upper side of the tilling shaft and a left and right side plate that covers an axial end of the tilling shaft,
The intermediate cover is provided around the middle of the said top plate rear cover, the rotary cover and the intermediate cover, and thereby rotatably supported to each of the intermediate cover and the rear cover,
A shaft fixed to the left and right side plates and supporting a front portion of the intermediate cover; an engaging pin provided at a rear portion of the intermediate cover so as to be freely protruded and retracted; A plurality of holes formed on the side plate so that the engaging pins can be engaged with the intermediate cover; and A handle that can move the upper and lower positions of the cover,
By selectively inserting and removing the engagement pin into any of the plurality of holes with the handle, the rotation fulcrum connecting the intermediate cover and the rear cover to the rotary cover is selectively moved up and down. Made it possible to move to
A rotary rear cover device, characterized in that: The rotary rear cover device according to claim 1, wherein a pressure adjusting bracket for a rear cover is provided on an upper surface of the intermediate cover.

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