JPH08191602A - Rear cover regulator in rotary - Google Patents

Abstract

PURPOSE: To provide the subject regulator of stout and streamlined structure, designed to quickly move the rear cover from normal tilling position to puddling position through movably regulating in the nearly rotational peripheral direction of the rotary the pivotal part for the rear cover covering the rear of the rotary and rotatably supported. CONSTITUTION: This rear cover regulator in a rotary is so designed that a linking device rotatably supported on a top mast 10 fixed on the upper part of the rotary body and linking the pivotal part for the rear cover to an operating lever 30 constituted holdably on a specified position is disposed so as to nearly coincide with the lateral center of the rotary, and a link arm is ensured to situate within the contour of the top mast 10 when viewed sideways within the operational range of the lever 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary cover which covers at least a part of a rotary cover and is provided with at least a part thereof rotatably. The present invention relates to a rear cover adjusting device for a rotary, which is arranged so as to substantially coincide with the rear part.

[0002]

2. Description of the Related Art Conventionally, in a cultivating device which is rotatably provided with at least a part of a rotary cover for covering a cultivating part, a rotating device using an electric power cylinder or a toolbar. It is already known to manually adjust a crank type handle from one end by using a screw used for vertical adjustment of the.

[0003]

Conventionally, in a cultivating device which is rotatably provided with at least a part of a rotary cover which covers a cultivating part as is already known, an electric motor is used as a rotating device. The one using a power cylinder is costly, while the one using a screw-type crank handle from one end to manually adjust is continuous, but it is an alternative to normal tillage or subtilt tillage. There was a dislike that it took too long for the switching operation of.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances and includes a rear cover (21) which covers a rear portion of a rotary (2) and is rotatably supported, and the rear portion. A rear cover adjusting device for a rotary (2), wherein a pivotal support (33) of the cover (21) is movably adjusted in a substantially rotational circumferential direction of the rotary (2), the rotary (2) rotating to the rotary (2). And a top mast (10) fixed to the upper part of the main body of the rotary (2) incorporating a transmission device for transmitting the power, and an operation lever rotatably supported by the top mast (10) and lockable at a predetermined position. (30), a link device (3) for connecting the operation lever (30) and the pivotal support portion (33) of the rear cover (21).
2), and the link device (32) is arranged substantially at the center of the left and right of the rotary (2), and the link device (32) includes the operation lever (3).
0) link arm (13a) fixed to the rotating shaft,
A connecting lot (21a) for connecting the link arm (13a) and the pivotal support (33) of the rear cover (21);
And the link arm (13a) is positioned within the outer shape of the top mast (10) in the operation range of the operation lever (30) in a side view. The above problems have been solved.

[0005]

Based on the above structure, when the rotary (2) is raised as shown in FIG. 1, the operating lever (30) can be brought closer to the driver's seat U, so that the operator can move the operating lever (30) to the top mast (10). ), It can be easily pivoted in the front-rear direction and locked in a predetermined position.

Therefore, as shown in FIG. 3, the link device (3
2) is formed in an expanded shape, and the pivotal support portion (33) of the rear cover (21) is slid rearward so that the operation lever (30) is
2 is locked to the rear locking part (31b), it can be moved to the skiding work position, and the operating lever (30) is pulled up from the position locked by the rear locking part (31b) to operate,
As shown in FIG. 3, the link device (32) is formed into a knuckle shape, and the pivotal support portion (33) of the rear cover (21) is slid forward and locked to the front locking portion (31c). Can be in working position.

The reference numerals in parentheses are for the purpose of contrasting with the drawings, but do not limit the structure of the present invention.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

The rotary tiller B mounted on the three-point link hitch mechanism A at the rear of the driver's seat U of the tractor 1 constitutes a slide mechanism at the rear end position of the main cover 13 fixed above the rotary 2. A front end portion of the rear cover 21 is pivotally attached by a hinge portion 33 through a horizontal frame 17 supported by a slide member (bracket) 22 so as to be vertically rotatable, and the slide member 22 and the horizontal frame 17 are provided above the main cover 13. A rear cover 21 is moved back and forth by moving it back and forth along a rail guide provided by a moving mechanism 19 described later.

A rail guide is fixed on the upper surface of the main cover 13 fixed to the gear case, the chain case 12, etc., and a roller 15 is rotatably provided on the rail guide. A guide rail 16 curved inward in a U-shaped cross section is fitted into the two rows of rollers 15 on the main cover 13 so as to be slidable. At the rear end of the guide rail 16, a square pipe is provided in the horizontal direction as a rail frame, that is, a horizontal frame 17, and forms a support member for the rear end of the flexible plate 28 (rubber plate). .

As shown in FIG. 1, the guide rail 16 connects a moving mechanism 19 attached to the top mast 10 and the main cover 13 with a pin 20 in the central portion of the horizontal frame 17, and an operating lever 30 to a lever guide 31 ( (Figure 1, Figure 5)
By operating in the front-back direction in the main cover 13
It has a structure that slides upward.

That is, the moving mechanism 19 is arranged such that the main cover 13 for covering the rotary 2 is provided with the rear cover 21 through the slide mechanism S so that the rear cover 21 is movable back and forth so that the tiller B can be moved up and down at the rear of the driver's seat U. , The main cover 13 and the rear cover 21 are respectively connected to the operating arms 13a.
And a pushing arm 21a are connected from above by a bending link 32, and an operating lever 30 provided on the operating arm 13a is extended toward the vicinity of the driver's seat U, and a middle portion thereof is located on the side of the top mast 10 side. Lever guide 3 provided on one side
The guide hole 31a of the rear cover 2
Reference numeral 1 forms locking portions 31b and 31c which are slidably locked in two stages of a shallow tillage set position and a deep tillage set position.

Therefore, as shown in FIG. 1, when the tiller B is raised, the operator faces rearward from the driver's seat U, and the operating lever 30 is shallow in the guide hole 31a formed in the shape of a straight long hole. The height of the rear cover 21 can be easily operated and reliably operated while preventing erroneous operation by selectively pushing and pulling the plow engaging portion 31b and the deep plowing engaging portion 31c to engage with each other. .

The middle part of the operating lever 30 is shown in FIG.
As shown in FIG. 5, a spring 29a is provided between a lug 30b provided on the side of the base straight portion 30a of the operation lever 30 and a fulcrum shaft fitting 29 to move the operation lever 30 back and forth. By doing so, along with the action of crossing the dead point, it is always biased in a state of being engaged with the locking portions 31b, 31c.

The actuating arm 13a is sandwiched between the two plates of the top mast 10 and is composed of two plates on the center line thereof, the base of which is located on the shaft 29b of the fulcrum shaft fitting 29. It is connected and fixed by the pin 29c, and rotates in conjunction with the back and forth movement of the operation lever 30. The tip of the actuating arm 13a sandwiches the pushing arm 21a in the center of the two plates, and one end of the pushing arm 21a is rotatably supported by a pin 21b. The other end of the pushing arm 21a is pivotally supported by a pin 20 on a bracket 22 standing upright in the center of the horizontal frame 17.

As described above, each component of the bending joint 32 which constitutes the moving mechanism 19 is sandwiched between the strong top masts 10 made of two plates, and when the moving mechanism 19 is operated, a load is applied. It is possible to operate in good balance without being biased.

Further, since the respective constituent parts of the bending link 32 are constructed so as not to protrude from the outer shape of the top mast 10 in a side view, the appearance is also simplified and refreshed.

Since the reinforcing members at both end portions of the rear cover 21 of the present invention are projected downward as shown in FIGS. 6 and 7, the mud water is rectified when performing the scraping operation at a high speed. Not only was the levelness improved after running and scratching, but mud was less likely to collect on the upper surface of the rear cover 21, and mud removal was easier.

[0019]

As the operator operates the operating lever to adjust the rear cover via the link device, the rear cover can be quickly and reliably operated, for example, in the normal tilling position and the skimming position.

Further, since the operation lever is supported by the top mast and the link device is arranged substantially in the center of the rotary in the left-right direction, the left-right balance of the rotary device can be maintained and it is robust. By being supported by the structural top mast, the rear cover adjusting device can be made compact and can maintain sufficient strength.

Further, when the link arm is positioned within the outer shape of the top mast, despite using the link device,
The internal structure such as the connecting portion of the link device cannot be seen from the outside, which makes the design cleaner and reduces malfunctions due to adhesion of mud or the like.

[Brief description of drawings]

FIG. 1 is a side view of a tilling device according to an embodiment of the present invention.

FIG. 2 is a side view showing a cover mechanism during ordinary tillage work.

FIG. 3 is a side view showing a cover mechanism during a scraping operation.

FIG. 4 is a plan view showing a main configuration of a moving mechanism.

FIG. 5 is a plan view of a lever guide.

FIG. 6 is a sectional view of a rear cover.

FIG. 7 is a side view of a rear cover.

[Explanation of symbols]

 10 Top Mast 13 Main Cover 16 Guide Rail 17 Horizontal Frame 21 Rear Cover 30 Control Lever 31 Lever Guide 32 Bend Link

Claims (2)

[Claims] 1. A rotary cover comprising a rear cover rotatably supported while covering a rear part of the rotary, and a pivotal support portion of the rear cover being movably adjusted in a substantially rotational circumferential direction of the rotary. In the rear cover adjusting device, a top mast fixed to the upper part of the rotary body having a transmission device for transmitting rotation to the rotary, and an operation configured to be rotatably supported by the top mast and lockable at a predetermined position. A rear cover for a rotary, comprising: a lever; and a link device for connecting the operation lever and a pivotal support portion of the rear cover, wherein the link device is arranged substantially at the center of the left and right of the rotary. Adjustment device. 2. The link device includes a link arm fixed to a rotation shaft of the operation lever, and a connecting lot connecting the link arm and a pivotal support portion of the rear cover, and the link arm. The rotary rear cover adjusting device according to claim 1, wherein the rear cover adjusting device is located within the outer shape of the top mast in the operation range of the operation lever in a side view.