JPS6188803A - Automatic rotary structure in rotary part in tractor - 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 an auto-rotary structure for automatically raising and lowering a rotary portion of a tractor.

(b) Conventional technology Conventionally, as shown in Fig. 4, the rotary part (a) that is repeatedly hit at the rear of the tractor has an auto-rotary structure A7 (b).
It is configured to move up and down using a lift arm (C) controlled by a lift arm (C) to automatically maintain a constant plowing depth. At this time, the rear end of the auto rotary wire (b) The interlocking mechanism (e) is attached to the slider cover (d).
), and when the rear cover (d) moves up and down, the rotary part (a) is connected via the same wire (b).
) is activated as appropriate.

(c) Problems to be Solved by the Invention However, since the rear cover is in sliding contact with the plowed set surface, it does not detect the true plowing depth. 11 Since the amount of soil was small, the surface of the pile was undulating and a uniform plowing depth could not be obtained.

(d) Means for Solving the Problems An object of the present invention is to provide a coupling body above the depth adjustment frame having a tail wheel at the rear end so as to operate in conjunction with the lifting and lowering operation of the tail wheel. An object of the present invention is to provide an auto-rotary structure that can accurately maintain a constant plowing depth by interlocking and connecting the rear end of an auto-rotary wire to the connecting body.

(E) Operation With the above configuration, the tail wheel rolls on the tiller, so the vertical movement of the tail wheel due to one true depth is transmitted to the autorotary wire via the coupling body, and this movement Since the lift arm is controlled by the above, the plowing depth can be kept constant, and even in shallow plowing work, the ripple phenomenon on the assembled surface does not occur.

(F) Effects According to the present invention, the plowing depth can be reliably maintained at a constant level even in shallow plowing work, so ripples do not occur on the soil surface and work performance is significantly improved. It has the effect of making you feel J゛.

(G) Embodiment The embodiment of the present invention will be described in detail based on the drawings. (A> indicates the rear part of the tractor body,
A rotary part (B) is connected to the rear of the rotary part (B) via a connecting device (1).

Rear differential case (2) installed at the rear of the tractor body (A)
), rear wheels (3) (3) are installed in series on the left and right sides of the case (2), a hydraulic case (4) is placed on the upper side of the case (2), and a lift is installed from the rear left and right sides of the case (4). Arms (5) (5) are protruded through hydraulic cylinders (6) so as to be able to move up and down, and the ends of the arms (5) (5) are connected to lift links (7) (7) of the coupling device (1). The rotary section (B) is connected to the upper end and is configured to be raised and lowered as the arm (5) moves up and down.

The rotary part (B) has the front ends of the left and right depth adjustment frames (9) (9) rotatably supported on the upper end of the $51 transmission case (8) via a U-shaped bracket (31).
9) L, each frame (9> (9) strut (10) from the rear end
<10) are installed vertically, and tail wheels (11) (11) are attached to the lower ends of each support (10) (10).
8) At the bottom, rotary shafts (12) (12) are provided protruding to the left and right sides, and tilling claws (12) are attached to the rotary shafts (12) (12).
3), and above the tilling claws (13), position the rotary cover (14) which extends from the middle part of the tilling transmission case (8) to the left and right sides, and
The front end of the hanger cover (15) is rotatably attached to the rear end of the upper side of 4), and a hanger rod (
16).

Then, the depth adjustment device (17) is installed on the left and right depth adjustment frames (9) (9), and the adjustment handle (17)-1 of the device is rotated so that the frame (9) < 9
) is configured so that the depth of tillage can be adjusted by means of the lt claw (13) by raising and lowering it around the pivot (one), and the device (17) has a U-shaped lower end. The pivot (21) is connected to a support bracket (32) horizontally protruding rearward from the bracket (31), and a connection support plate (20) is erected at the upper end of the tilling transmission case (8). The middle part of the connecting body (18) is pivotally supported (2) on the support plate (20).
2) At the same time, the 1st and 2nd ends of the connecting body (18) are connected to the upper part of the device (17) by a pivot (23).

(24) is integrated with a downward restraint stopper, (25) is integrated with a rise restraint stopper, and the front end (18) of the connecting body 18)
1 is in contact with each of the stoppers (24) and (25), thereby suppressing the vertical movement of the depth adjustment frame (9>).

In addition, the rotary part (B) detects the displacement of the connecting body (18) via the tail wheel (11) due to the uneven displacement of the assembly surface, and the auto-rotary machine fs (M>) By moving the rotary part (8) up and down, a constant plowing depth is automatically maintained.

That is, the autorotary mechanism (M) connects the outer periphery of the inner wire (26)-1 to the actor wire (26)-2.
The inner wire (26)-1 tip of the autorotary wire (26) surrounded by the inner wire (26)-1 is connected to the tip of a hydraulic valve operating arm (27) provided in the hydraulic case (4), Connect the rear end of 1 to the rear of the connecting body (18) (
30) Then, a hydraulic valve actuating arm (27) is interlocked via an inner wire (26)-1 to a connecting body 18) that is vertically displaced in accordance with the vertical displacement of the tail wheel (11), and a hydraulic cylinder is activated. The lift arms (5) and (5) are moved up and down via (6), so that the entire rotary portion (B) can be moved up and down. (28) are front end support brackets 1 to 1 supporting the front end of the outer wire (26)-2, and (2) are rear end support brackets supporting the rear end of the outer wire (26)-2.

[Brief explanation of the drawing]

FIG. 1 is a side view of a rotary section having an auto-rotary structure according to the present invention. FIG. 2 is an explanatory diagram of the operating state of the rotary section. FIG. 3 is a plan view of the rotary section. Diagram showing an example (A): Tractor body (B) Two rotary parts (M): Autorotary mechanism

Claims (1)

[Claims] 1) Connect the rotary part (B) to the rear of the tractor (A), and connect the rotary part (B) to the auto rotary wire (26).
In the rotary part (B) configured to be raised and lowered by a lift arm (5) controlled by
8) The front end of the depth adjustment frame (9) is pivoted (19) at the top so that it can move up and down, and the tail wheel (11) is attached to the rear end of the frame (9). Deep plowing adjustment device (17) with its lower end connected to the pivot (21)
A connecting body (18) that operates in conjunction with the lifting and lowering operation of the tailwheel (11) is pivotally interposed between the and the connecting support plate (20) that stands up from the upper end of the tilling transmission case (8). , an auto-rotary structure in a rotary part of a tractor, in which the rear end of an auto-rotary wire (26) is interlocked and connected to the connecting body (18).