JPS63216403A - Rear cover posture holding structure in rotary apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a structure for maintaining the posture of a rear cover in a rotary device.

(B) Prior Art Conventionally, a rotary device has an upper and lower entrance connected to the rear of a tractor by a two-point linkage mechanism or a three-point linkage mechanism.

The rotary device is provided with a rear cover, and the upper edge of the rear cover is pivoted to the rear end of the rotary cover so as to be able to swing up and down, and the rear cover is allowed to hang down. The new surface is leveled and filled with tilled soil.

Furthermore, the rear cover may also be used as a sensor for the auto-rotary mechanism.

In other words, the auto-rotary mechanism is a rear cover that slides on a new surface by interlockingly connecting the rear cover and a hydraulic cylinder for operating a lift arm that constitutes a part of a two-point linkage mechanism or a three-point linkage mechanism using an interlocking wire or the like. The lift arm moves up and down in conjunction with the movement of the rotary device, so that the plowing depth of the rotary device remains constant.In this case, the rear cover functions as a sensor for the mechanism. Ru.

(c) Problems to be Solved by the Invention However, in the case of such a rotary clearing device, the rear cover is allowed to hang down from the rotary cover so as to be able to swing vertically, so that even when the rotary device moves up and down due to changes in plowing depth, the tip of the rear cover remains constant. Although the rear cover slides on a precise surface, the posture of the rear cover changes each time, and there is a problem in that the function of the rear cover described above cannot be fully performed.

That is, as shown in Fig. 3, when plowing deeply, the upper end fulcrum (b) of the rear cover (a) moves closer to the new surface, so the tip of the rear cover (a) moves rearward, causing the same There is a problem that the inclination of the rear cover (a) itself becomes gentle, and the ability to embed tilled soil deteriorates, and the vertical movement of the rear cover becomes severe due to the impact of scattered soil from tillage, making it impossible to perform an appropriate auto-rotary function. .

In addition, as shown in Figure 4, when plowing shallowly, contrary to the above, the upper end fulcrum (b) of the rear cover (a) is displaced upward from the new surface, so the rear cover (a) becomes upright. Rear cover (a) that corresponds to the new unevenness of the surface
It becomes difficult for the rotary shaft to swing up and down, and in this case as well, there is a problem that an appropriate auto-rotary function cannot be achieved.

Note that (h) shown in Figure 3 and (h) shown in Figure 4 (the old one is the height from the new surface to the upper end fulcrum position of the rear cover,
(H) is larger than (h).

Therefore, it has been desired to develop a rear cover posture holding mechanism that can always maintain a desired posture of the rear cover even when the plowing depth is adjusted.

(d) Means for solving the problems The present invention provides a new leveling function, a tilled soil embedding function,
In a two-point linkage mechanism that connects a rotary device equipped with a rear cover with a sensing function of an auto-rotation mechanism, etc. to the rear of a tractor so that it can rise and fall freely, the rear end of the case support whose front end is connected to the rear end of the tractor. and,
The rotary transmission case of the rotary device is connected to the rotary transmission case in a swingable manner, and a parallel link is interposed between the tractor and the rotary device so as to be approximately parallel to the case support. It is an object of the present invention to provide a structure for maintaining the posture of a rear cover in a rotary device that is provided with a telescoping device for adjusting the tilting of a case.

(e) Operation When performing tillage work, the rotary device is lowered to a predetermined position by the two-point linkage mechanism, and the tractor is driven along with the operation of the rotary device.

At this time, the tilling work is carried out while keeping the rear cover, which performs the new surface leveling function, the tilled soil embedding function, and the sensing function of the auto-rotary mechanism, in an ideal posture to perform these functions accurately. be.

If the ideal posture of the rear cover changes due to the plowing depth adjustment of the rotary device, the rear cover can be maintained in the ideal posture by adjusting the expansion and contraction device as appropriate and adjusting the tilting of the rotary device. It is possible.

Furthermore, if the telescoping device is made to be able to extend and retract in conjunction with the elevation and descent of the rotary device, and to be able to control the tilting of the rotary transmission case to keep the rear cover approximately constant, the posture of the rear cover can be adjusted. Since the ideal condition can be maintained automatically, the same rear cover can be used to reliably level the new surface, fill in plowed soil, and sense the auto-rotary mechanism.

(f) Effects According to the present invention, the posture of the rear cover can be maintained in an ideal state at all times regardless of changes in the plowing depth of the rotary device, resulting in the following effects.

■ Improved finish because the new surface is reliably leveled.

■ Since the tilled soil is reliably embedded, there is less rotation and stagnation of the tilled soil, and the tilling load on the rotary device is reduced.

■ Since the sensing sensitivity of the rear cover is kept constant, the auto-rotary mechanism operates accurately, ensuring a constant plowing depth and improving work efficiency.

(G) Embodiment The embodiment of the present invention will be explained in detail based on the drawings. As shown in FIG. 1, (^) is a tractor, (B) is a rotary device, and (C) is a rotary device.
is a two-point link mechanism that connects the rotary device 1 (B) to the rear of the tractor (^) so that it can move up and down. In tractor (8), (1) is a mi-sochon case, (2)
is the hydraulic case, (2゛) is the two-point link machine 1'! (C
), and (3) is the rear wheel.

In addition, in the rotary device (B), (4) is a rotary gear case, (5) is a case support, (ri is a rotary transmission case, (7) is a shaft case, (8) is a tiller, (9) is a
) is the low recovery cover, (10) is the rear cover, (11)
is an autorotary mechanism, and (12) is a link flange.

The inner end of the shaft case (7) is rotatably fitted loosely into the case support (5), and a link flange (12) is fixed to the middle part of the inside of the coaxial case (7). The upper part of the rotary transmission case (6) is fixed to the outer end of the rotary transmission case (6). Furthermore, the rotary cover (9) is attached to the same case (6), and the base end edge of the rear cover (10) is pivoted to the rear end edge of the rotary cover (9) so as to be able to swing vertically (13). The tip (10a) of the rear cover (10)
) to make it possible to level the new surface (G) and fill in plowed soil.

Therefore, the rotary transmission case (6) is a gear support)
It is swingable with respect to (5), and the same case (6)
The rear cover (10) is swingably attached to the rear cover (10) via a rotary cover (9), and its posture changes according to the tilting of the case (6).

In addition, the auto-rotary mechanism (11) has a lift arm (
The rear cover (10) is interposed between the hydraulic cylinder in the hydraulic case (2) that moves the rear cover (10) up and down (2 degrees) and the base end of the rear cover (10), and slides on the new surface (G). ) is configured to transmit the vertical fluctuation of the tip of the rotary device (B) to the same hydraulic cylinder, and raise and lower the rotary device (B) appropriately using the lift arm (2°), thereby automatically keeping the tilling depth constant. ing. In such an autorotary machine m (11), the rear cover (10) functions as a sensor.

In addition, the two-point linkage mechanism (C) connects the tip of the lift arm (2°) provided on the tractor (^) and the rotary device (B).
A lift link (14) is interposed between the case support (5) and the middle part of the case support (5).

In such a configuration, the gist of the present invention is that the rear cover (1
0), and in order to maintain the posture of the rear cover (10), the tractor (A) and the rotary device f
(B), a parallel link (15) is interposed directly above the case support (5) in a substantially parallel manner, and the parallel link (15) has a midway part that adjusts the tilting of the rotary transmission case (6). A telescoping device (16) is provided for performing this.

That is, the parallel link (15) consists of a telescoping device (16) and an auxiliary link (17), and the telescoping bag fi (16)
is interposed between a link bracket (18) protruding from the rear surface of the hydraulic case (2) and the upper end of a link stay (19) erected in the middle of the case support (5), and
An auxiliary link (17) is interposed between the upper end of the link stay (19) and the upper end of the link flange (12).

As the telescoping device (16), for example, a hydraulic cylinder can be used;
Hydraulic controller (21) installed on the tractor (8)
), and the controller (21) allows the telescoping device (16) and lift arm (2°) to be linked to maintain the posture of the rear cover (10) of the rotary device (B) approximately constant. It is configured as follows.

That is, in conjunction with the lift arm (2゛) that raises and lowers the rotary device (B), the telescoping device (16) is appropriately expanded and contracted, and the rotary transmission case (6) is tilted and adjusted via the link flange (12). Therefore, the same case (6)
The rear cover (10), which is swingably attached to the rear cover (10) via the rotary cover (9), can maintain a substantially constant posture.

Further, in detail, when the tillage depth is constant and shallow, the rear cover (10) maintains the ideal posture, that is, the function of leveling the tilled surface, the function of embedding the tilled soil, and the sensing function of the auto-rotary mechanism. If you want to set the tillage depth to be deeper than in the same state, lower the lift arm (2゛) further and lower the entire rotary device f (B). and hydraulic controller (
21), the telescopic gear g (1e) is retracted, tilting the rotary transmission case (6) forward, and also opening the rear cover (which was originally attached to the case (6) via the rotary cover (9)). 10) is maintained in an ideal posture by moving the base end pivot position of the rear cover (10) upward, so that the rear cover (10) is in a gently inclined state as shown in FIG.

On the other hand, when the plowing depth is to be made shallower than the above-mentioned constant shallow state, the telescoping device (16) is extended in conjunction with the lift arm (2) to move the rotary transmission case (6). As shown in FIG. 4, the base end pivot position of the rear cover, which would normally be in a steeply inclined state, is moved downward to maintain an ideal posture in a substantially upright state.

FIG. 2 also shows another embodiment of the telescoping device (16) and -
A so-called turnbuckle (20) is shown, which allows for manual adjustment of expansion and contraction.

[Brief explanation of the drawing]

FIG. 1 is a side view of a rotary device showing a rear cover posture holding structure according to the present invention. FIG. 2 is a side view of a rotary device showing another embodiment. FIG. 3 is an explanatory diagram showing a deep plowing state using a conventional row-cleaning device. FIG. 4 is an explanatory diagram showing a shallow plowing state using the rotary device. (^): Tractor (B) Two-point link mechanism (C) Two-point link mechanism (5): Case support (6): Rotary transmission case (10): Rear cover (15): Parallel link (16): Extension device

Claims (1)

[Claims] 1) A rotary device (B) equipped with a rear cover (10) having a function of leveling a cultivated surface, a function of burying tilled soil, a sensing function of an auto-rotary mechanism, etc., is attached to a tractor (A). In the two-point link mechanism (C), which is connected to the rear of the tractor so as to be able to rise and fall freely, the rear end of the case support (5) whose front end is connected to the rear end of the tractor (A), and the rotary device (B)
A parallel link (15) is interposed between the tractor (A) and the rotary device (B) so as to be substantially parallel to the case support (5). The structure for maintaining the posture of a rear cover in a rotary device is provided with a telescoping device (16) in the middle of the parallel link (15) for adjusting the tilting of the rotary transmission case (6). 2) The telescoping device (16) can be telescopically operated in conjunction with the lifting and lowering of the rotary device, and the rotary transmission case (
6) A structure for maintaining the posture of a rear cover in a rotary device according to claim 1, which is capable of controlling the posture of the rear cover (10) to maintain a substantially constant posture by performing the tilt adjustment.