JP2000000001A - Mounting apparatus for leveler in rotary - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mounting apparatus for a leveler capable of mounting the leveler absorbing the delay in horizontal control of a rear cover against the field surface and performing a leveling work on the field surface, to a rotary in one action. SOLUTION: This linking mechanism CS for a rear cover 6 and a leveler 7 has a locking mechanism LS working as follows: a rotary is provided with tilling tines 4 which is rotatably journalled to a shaft and the rear cover 6 for covering the backside of the tilling tines 4; the leveler 7 for leveling a field is attached on the rotary; a holding handle 18 is attached on the leveler; and the lock between the leveler 7 and the rear cover 6 is released by lifting the handle 18 holding the leveler 7, and the leveler 7 and the rear cover 6 are locked by freeing the handle 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for mounting a leveler in a rotary for performing leveling work in a field scene by absorbing a delay in horizontal control of a rear cover with respect to a field scene.

[0002]

2. Description of the Related Art Conventionally, a tilling claw for tilling which is rotatably supported on a frame side of a conventional machine body,
There is known a tilling rotary having a rear cover that covers the rear side of the tilling claw, wherein the rear cover is swingably supported on the body frame side. Generally, this rotary is freely rollable behind a tractor. And is horizontally controlled by a hydraulic cylinder so as to keep it parallel to the field scene,
It is configured to plow the field scene and level it horizontally. At this time, when the tractor travels at a relatively high speed to perform a high-speed tillage operation with a rotary, a high-speed advance of the rotary causes a delay in the tilt (horizontal) control of the rotary, which may cause left and right undulations on the finished surface of the field. is there.

[0003] For this reason, a leveler which is supported by the rear cover so as to be capable of swinging right and left by a spring or the like is attached to the rear cover, and the leveler absorbs a delay in the horizontal control of the rear cover with respect to the field scene so that the field scene is removed. Although a rotary configured to be leveled substantially horizontally is known, there is a disadvantage that the attachment and detachment of the leveler and the rear cover are relatively complicated, and the leveler cannot be easily attached to the rear cover.

[0004]

According to the present invention, there is provided an apparatus for mounting a leveler in a rotary according to the present invention, comprising: a tilling claw 4 for tilling rotatably supported on a body frame 3a side; And a rear cover 6 that covers the rear side of the vehicle 4. The rear cover 6 is swingably supported on the body frame 3 a side, and a leveler 7 for leveling the field can be detachably attached to the rotary. A handle 18 for gripping the leveler 7 is attached to the leveler 7, and the connecting mechanism CS between the rear cover 6 and the leveler 7 raises the handle 18 to grip the leveler 7, whereby the lock between the leveler 7 and the rear cover 6 is released. 18
, A lock mechanism LS for locking the leveler 7 and the rear cover 6 is provided.

[0005]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view of a rotary 3 connected to the rear of a tractor 1 via a three-point link hitch mechanism 2, and the rotary 3 has a body frame 3a of the rotary 3.
A tilling claw 4 for tilling, which is rotatably supported on the side of the tilling, is provided, and the tilling claw 4 covers the back of the tilling claw 4 and is provided.
A rear cover 6 that prevents scattering of the plowed tilled soil, performs crushing, inversion, and leveling is provided on the side of the body frame 3a so as to be vertically swingable (rotatable).

The rotary 3 is horizontally controlled by a hydraulic cylinder (not shown) so that the rear cover 6 is kept parallel to the field scene as in the prior art.
When the tractor 1 travels at a relatively high speed to perform the high-speed tilling work with the rotary 3 at this time, the rotary 3 is tilted by the high-speed advance of the rotary 3. (Horizontal) control may be delayed, causing left and right undulations on the finished surface of the field.

For this reason, the rotary 3 is configured such that a leveler 7 that is supported to the rear cover 6 in a passively swingable manner can be attached to the rear of the rear cover 6. In contrast, a structure in which the leveler is controlled in parallel (passive control), the leveler 7 absorbs the horizontal control delay of the rear cover 6 with respect to the field scene, and the field scene is leveled substantially horizontally, thereby improving the leveling accuracy of the field. Has become. The present invention relates to a device for mounting the leveler 7 and the rear cover 6.

As shown in FIGS. 1 and 2, reinforcing ribs 8 each having a U-shape are welded to the left and right sides of the upper surface of the rear cover 6. Mounting part 9 is fixedly provided. The mounting portion 9 is provided with front and rear pins 11 and 12 for leveler mounting.

On the other hand, as shown in FIGS. 3 and 4, the leveler 7 is provided with a square pipe-shaped main frame 13 and has a central portion which is rotatably supported by the main frame 13 in a substantially L-shape.
A leveler cover 14 made of a plate horizontally arranged in a lateral direction in the shape of a letter, a plurality of rakes 16 made of a spring material fixed to the lower surface of the leveler cover 14, and projecting forward on the left and right sides of the main frame 13, respectively. Brackets 17 fixed to each other, each support bracket 1
The handle 7 is rotatably supported by the handle 7 and the like.

[0010] By holding the handle 18, the leveler 7 can be gripped. As shown in FIGS. 5A and 5B, springs 19 are provided on the left and right of the leveler cover 14 between the leveler cover 14 and the main frame 13, and the leveler cover 14 is elastically (passively) moved by the spring 19. It is rotatably supported by the frame 13. The main frame 13 is also provided with a stopper 21 for restricting the amount of rotation of the leveler 7.

That is, the leveler cover 14 is connected to the rear cover 6.
The main frame 13 on the side is passively and rotatably supported by a spring 19 without an actuator actively controlled, thereby absorbing the horizontal control delay of the rear cover 6 with respect to the field scene as described above. , And is configured to improve the leveling accuracy of the field scene at the time of high-speed tilling.

On the other hand, as shown in FIGS. 4 and 6, the support bracket 17 is formed of a gate-shaped plate 22 fixed to the main frame 13 for mounting on the rear cover 6 (mounting portion 9). Plate 22 has reinforcing ribs 8
A concave groove 23 which is open forward and can be engaged with (fit into) the front pin 11 and a longitudinally elongated groove 24 which is open downward and engageable with the pin 12 are formed. The groove 23 is engaged with the pin 11 from the front, and the pin 12 is moved from the opening below the groove 24 to the groove 2.
4, the leveler 7 is supported by the rear cover 6 (the mounting portion 9) by engaging the pin 12 with the groove portion 24.

A handle 18 is pivotally supported on the support bracket 17 as described above, and the handle 18 is formed of a plate having a grip 18a at the rear end, as shown in FIG. Is urged downward by the torsion spring 26 as described above. As shown in FIG. 4, the torsion spring 26 has a spring force set so as to be balanced with the weight of the leveler 7 when the leveler 7 is gripped with the handle 18 so that the leveler 7 can be gripped in a well-balanced manner. It is configured as follows.

As a result, the leveler 7 is gripped by the handle 18 to support the leveler 7 on the rear cover 6 (the mounting portion 9) as described above. When the hand is released from the handle 18, the handle 18 is urged downward. As shown in FIG. 8, the rear end of the plate constituting the handle 18 presses (presses) the pin 12 against the end of the groove 24 when the handle 18 is urged by the torsion spring 26 as described above. After the leveler 7 is supported by the rear cover 6, the handle 18 is released, so that the cam surface 27 and the end of the groove 24 form a pin. 12 is configured to be pressed and held without play, and the leveler 7 is automatically locked to the rear cover 6.

When the leveler 7 is to be removed, as shown in FIG. 9, when the leveler 7 is gripped by holding the handle 18, the handle 18 is swung upward against the biasing force of the torsion spring 26, and (Cam surface 27) and Pin 1
2 is released, the pin 12 can move freely in the groove 24, and the lock between the leveler 7 and the rear cover 6 is automatically released, so that the engagement between the pin 12 and the groove 24 is released. Thus, the leveler 7 can be easily removed from the rear cover 6 with one touch.

That is, a connecting mechanism CS for connecting the leveler 7 to the rear cover 6 by the support bracket 17 and the mounting portion 9.
And a lock mechanism LS for locking the leveler 7 and the rear cover 6 with the groove 24 and the handle 18 (the cam surface 27) is provided. 18 to raise the leveler 7 and rear cover 6
Is unlocked and the leveler 7 and the rear cover 6 are locked by releasing the handle 18.

Thus, the leveler 7 and the rear cover 6 can be easily attached to and detached from the rear cover 6 with one touch, and the work of attaching and detaching the leveler 7 can be easily performed. However, when the leveler 7 is mounted, the cam surface 27 of the handle 18 is Is pressed against the end of the groove 24 (pressed), and the cam surface 27 is also pressed by the pin 12, so that rattling when the leveler 7 and the rear cover 6 are mounted is reduced, and rattling during work is reduced. Sounds etc. are also reduced.

The lock mechanism LS has a structure utilizing the handle 18 itself (integral structure with the handle 18). The structure is relatively simple, and the number of parts does not increase more than necessary. It is low, easy to maintain, has few failures, and is easy to handle. It is also functional in design.

[0019]

According to the structure of the present invention having the structure described above, the lock mechanism in the coupling mechanism between the leveler and the rear cover is raised by lifting the handle to grip the leveler from the state in which the leveler is mounted on the rear cover. Since the release is released, the leveler can be easily removed from the rear cover with one touch (lifting the handle). When attaching the leveler to the rear cover, the leveler is gripped while the handle is lifted, and the leveler is connected to the rear cover (the coupling mechanism). ), The handle is released and the leveler is mounted and locked on the rear cover with a single touch, that is, the rear cover and the leveler can be easily attached and detached.

[Brief description of the drawings]

FIG. 1 is a left side view of a main part of a rotary.

FIG. 2 is a plan view of a main part of a rear cover.

FIG. 3 is a plan view of a leveler.

FIG. 4 is a side view of a rear end portion of a rear cover and a leveler.

5A is a rear view showing a state parallel to the rear cover of the leveler attached to the rear cover, and FIG. 5B is a view inclined to the rear cover of the leveler attached to the rear cover; It is a rear view showing a state.

FIG. 6 is a cross-sectional view of a support bracket showing an engagement state with a pin.

FIG. 7 is a cross-sectional view of a support bracket portion showing a mounted state of a handle.

FIG. 8 is a side view showing a state in which the leveler and the rear cover are locked by a lock mechanism in a state where the leveler is supported on the rear cover side.

FIG. 9 is a side view showing a state where the lock between the leveler and the rear cover is released in a state where the leveler is supported on the rear cover side.

[Explanation of symbols]

 3a Airframe 4 Tilling Claw 6 Rear Cover 7 Leveler 18 Handle CS Connection Mechanism LS Lock Mechanism

Claims (1)

[Claims] 1. A tilling claw (4) for tilling rotatably supported on a side of a body frame (3a), and a rear cover (6) for covering a rear side of the tilling claw (4). A handle for gripping the leveler (7) in a rotary that is swingably supported on the side of the body frame (3a) and to which a leveler (7) for leveling the field can be detachably attached. (18) is attached to the leveler (7), and the connecting mechanism (C) for connecting the rear cover (6) and the leveler (7).
S), handle (1) to hold leveler (7).
The lock mechanism (LS) that locks the leveler (7) and the rear cover (6) by releasing the handle (18) by releasing the handle (18) is released by lifting the 8). A leveler mounting device for the provided rotary.