JPH0965704A - Rotary cover operating device - Google Patents

Abstract

(57) [Summary] [Problem] To dispose two handles at the best possible position where rotation loci overlap each other, and to fold interference between the handles. A rear cover (4) is pivotally supported at the rear end of an upper cover (3), the upper cover (3) is movably supported in a front-rear direction with respect to a rotary machine frame (5), and the rotary unit frame (5) is located substantially at the center in the horizontal direction. Handle the top mast 6 and the upper cover 3 with the handle 5.
The upper cover 3 is connected by the connecting drive means 7 for moving the upper cover 3 back and forth by the rotation of 8, and the rear projecting support frame 34 is supported by the rotary machine frame 5 so as to be vertically movable, and the top mast 6 and the support frame 34 are handled by the handle 37. The supporting frame 34 is moved up and down by the rotation of the connecting drive means 36, and the connecting drive means 7 and 36 are arranged close to the center of the rotary machine frame 5 in the left-right direction. , B are overlapped, and both handles 37, 58 are foldable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary cover operating device having two connecting drive means.

[0002]

2. Description of the Related Art Conventionally, in a cover device for a rotary cultivator, a rear cover is pivotally supported at the rear end of the upper cover, and the upper cover and the rear cover are appropriately raised according to the working depth at the time of tilling or scraping. For this reason, the upper cover is movably supported in the circumferential direction of the tillage part with respect to the rotary machine frame.

In this prior art, a telescopic rod means is provided between the rotary machine frame and the upper cover as a connecting and driving means, and the rod is expanded and contracted by rotating the handle, so that the upper part with respect to the rotary machine frame. The cover is moved back and forth in an arc direction, and the position of the upper end of the rear cover is moved up and down. In addition, a support frame for attaching a rear gauge wheel or a cultivator to the rotary machine frame is vertically movably connected, and a telescopic rod means is also provided between the support frame and the top mast to rotate the handle. This allows the rod to expand and contract to adjust the height of the rear gauge wheel, etc.

The telescopic rod means for driving the upper cover and the telescopic rod means for driving the support frame can be operated from above the tractor with the rotary cultivator raised, and both telescopic rod means rotate simultaneously. It is never operated, but care is taken so that the rotating handles do not interfere with each other.

[0005]

The arrangement of the two handles in such a manner that they do not interfere with each other is such that when one of the handles is arranged at the best operation position such as the center of the rotary machine frame, the other handle is operated. It will be placed in a position where it is difficult to do, and the connection with the moved member will also deviate from the center of the rotary machine frame in the left and right direction, which may make smooth movement difficult. It is difficult to place it in the best possible position.

In view of the above problems of the prior art, the present invention can eliminate the interference of the handles by arranging the two handles at the best possible position where the rotation loci overlap and folding each handle. An object of the present invention is to provide a rotary cover operating device.

[0007]

A concrete means for solving the problems in the present invention is to pivotally support a rear cover 4 at the rear end of the upper cover 3 and to move the upper cover 3 forward and backward with respect to the rotary machine frame 5. The top mast 6 which is movably supported and located substantially at the center of the rotary machine frame 5 in the left-right direction is connected to the upper cover 3 by a connection drive means 7 for moving the upper cover 3 back and forth by rotation of the handle 58. 5, a supporting frame 34 protruding rearward is supported so as to be movable up and down, and the top mast 6
And the support frame 34 by rotating the handle 37.
Are connected by a connecting drive means 36 for moving up and down, and the two connecting drive means 7 and 36 are disposed close to each other substantially at the center of the rotary machine frame 5 in the left-right direction.
And the handles 37 and 58 are foldable.

As a result, the two handles 37, 58
Both of them can be arranged at the optimum position in the center of the rotary machine frame 5 in the left-right direction where it is easy to operate, and both the coupling drive means 7 and 36 can be arranged in the center of the rotary machine frame 5 in the left-right direction. , Front-back movement of the upper cover 3 and the support frame 3
The vertical movement of 4 can be smoothly performed without twisting or the like on the left and right.

A second concrete means for solving the problems in the present invention is, in addition to the first concrete means, a rotation locus A of both handles 37, 58 on the top mast 6.
At the position away from the overlapping part of B, each handle 3
Folding holding portion 5 for holding the folded state of 7, 58
4 and 55 are formed. This gives 2
Even if the handles 37 and 58 of the book are arranged close to each other, it is possible to hold the other handle in a position where it does not interfere with the operation of the other handle, and the handles do not interfere with each other during the operation.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 3 and 4, reference numeral 13 denotes a rotary cultivator, which is mounted behind a tractor via a three-point link mechanism, and a rotary machine frame 5 is provided with a cover device 1 for covering the cultivating part 2. The rotary machine frame 5 projects a support arm 22 left and right from a gear case 21 located substantially in the center in the left-right direction (width direction), a transmission case 23 is attached to the left support arm 22, and a side frame 24 is attached to the right support arm 22, respectively. The top mast 6 is fixed to the upper part of the bolt 21 by bolts. This top mast 6
Is formed by two parallel plate materials.

The transmission case 23 and the side frame 24
Claw shaft 30 having a large number of tilling claws 29 between the lower ends of and
Are rotatably supported around a horizontal axis and form a tilling section 2. The power for driving the pawl shaft 30 is transmitted from the PTO shaft of the tractor to the input shaft 33 via the universal joint shaft, and from the input shaft 33 to the gear transmission means in the gear case 21 and the chain transmission means in the transmission case 23. It is transmitted to the pawl shaft 30 via the.

Reference numeral 34 is a support frame pivotally connected to the support arm 22. Rear gauge wheels (or cultivators) are attached to the left and right sides of the rear end of the support frame 22 and the top mast 6 and the support frame 34.
Between the and, a telescopic rod means (coupling drive means) 36 for adjusting the height of the rear gauge wheel to adjust the working depth is provided. The telescopic rod means 36 pivotally supports a pivot body 35 located between two plate members at the upper rear portion of the top mast 6 so as to be rotatable around a horizontal axis, and a male screw rod 38A is penetratingly supported by the pivot body 35. Then, by connecting the female screw rod 38B screwed with the male screw rod 38A to the support frame 34 and rotating the handle 37 provided at the upper end of the male screw rod 38A, the male screw rod 38A and the female screw rod 38B are axially moved. It is configured to expand and contract.

When the handle 37 is rotated in the operation posture shown by the solid line in FIG. 3, the rotation locus becomes the locus B shown in FIG. Further, the handle 37 can be folded from the operating posture, and when folded, can be held by the folding holding portion 55 provided on the outer surface of the pivot body 35. The cover device 1 that covers the cultivated part 2 is roughly classified into an upper cover 3 that covers the upper part of the cultivated part 2, a rear cover 4 that covers the rear part, and an upper cover 3.
It has a support cover 40 that supports the left and right side portions of the vehicle, a rear fixed cover 41 that covers the rear side and a rear movable cover 39, and an auxiliary cover 42 that can cover the upper front.

The upper cover 3 has side plates 45 fixed to the left and right ends of a main plate 46, which is substantially arcuate in side view along the outer periphery of the tillage part 2, with a front reinforcing member 47 on the front part of the upper surface of the main plate 46 and a rear part on the rear side. Reinforcements 48 are attached over each width. A support cover 40 is rotatably supported at the lower ends of the transmission case 23 and the side frame 24 via a bush coaxially with the pawl shaft 30, and the support cover 40 supports the left and right side plates 45 and the rear plate. The side fixing cover 41 is fixed by bolts. The rear fixed cover 41 on the transmission case 23 side is bulged outward so that the soil discharged from the tiller 2 can be supplied to the rear of the transmission case 23.

The upper end of the rear cover 4 is pivotally connected to the rear end of the upper cover 3 through a pivot shaft 50. Between the upper cover 3 and the rear cover 4, the upper cover 3 is connected. A lowering means 51 is provided for lowering the rear cover 4 downward so as to apply a uniform pressure. The rear cover 4 and the upper cover 3 have elastic covers 52, 53 formed of rubber sheets or the like with a gap on the surface on the side of the tilling part 2 respectively.
Is stretched. The elastic covers 52 and 53 may be integrally formed or may not be equipped.

The upper cover 3 has a main plate 46 which is a main part of the upper cover 3 when the support cover 40 rotates about the claw shaft 30.
Moves in an arc in the circumferential direction of the tilling part 2, and its rear end, that is, the upper end of the rear cover 4 is vertically displaced.
A telescopic rod means (coupling drive means) 7 for moving the upper cover 3 back and forth is provided between the upper cover 3 and the rotary machine frame 5.

The telescopic rod means 7 comprises a top mast 6
Rear halfway outer surface and bracket 5 fixed to this by bolts
9, a pivot body 57 is pivotally supported around a horizontal axis, and a male screw rod 60A is penetratingly supported by the pivot body 57, and a female screw rod 60B screwed with the male screw rod 60A is attached to a rear upper portion of the upper cover 3. By rotating the handle 58 provided on the upper end of the male screw rod 60A.
0A and the female screw rod 60B are configured to expand and contract in the axial direction.

When the handle 58 is rotated in the operating posture shown by the solid line in FIG. 1, its rotation locus becomes the locus A shown in FIG. Further, the handle 58 can be folded from the operating posture, and when folded, it can be held by the folding holding portion 54 provided on the outer surface of the pivot body 57. The two telescopic rod means 7, 36 have a similar construction and their pivotal support 5
7 and 35 are arranged close to the rear part of the top mast 6, that is, they are arranged close to each other in the vertical, horizontal, and front-rear directions, and the rotation trajectories A and B of both handles 58 and 37 are shown in FIG. They overlap as shown. The rotation locus B of the handle 37 intersects with the axial direction of the male screw rod 60A, but is vertically offset from the upper end of the male screw rod 60A, and the handle 37 does not hit.

The fold holders 54 and 55 are located away from the overlapping portions, and the handles 58 and 3 are provided.
When one of the handles 7 is rotated, the other is folded and held at a position out of the overlapping portion, and is retracted so as not to hinder the rotation of one handle. It should be noted that the present invention is not limited to the above-described embodiment, and can be variously modified. For example, the connection drive means 7, 3
In addition to a telescopic rod means for expanding and contracting the screwed male and female screw rods, a rack and pinion or a gear and a link 7 may be used.

(Other Disclosure) FIGS. 5 to 7 exemplify a rod supporting structure provided in the rotary cultivator 79. The rotary cultivator 79 is of a type that detects vertical movement of the rear cover 4 and automatically adjusts the plowing depth, and the rear cover 4 is elastically held at a constant height by the lowering means 80.

In the lowering means 80, an arm 81 projecting rearward from the rotary machine frame 5 is provided with a pivot support 82 which is rotatable about a horizontal axis, and a rod 83 is passed through the pivot support 82. The lower end of 83 is connected to the support plate 84 of the rear cover 4 via a pin 85, and upper and lower springs 86 and 87 are fitted to the rod 83. The pin 85 is a support plate 8
It is supported by a round-shaped circular loupe 88 fixed to the No. 4, which also serves as an end receiving member for the lower spring 87. When the end of the lower spring 87 expands and contracts in diameter by expansion and contraction, it is circular. It is designed so that it can slide smoothly on the outer circumference and move smoothly. Also, this slot 8
8 also regulates the position of the rod 83 in the left-right direction.

5 and 8 exemplify a stand device.
A stand 90 is provided on one of the left and right sides of the rotary machine frame 5 for allowing the rotary cultivator 79 to stand on its own when the rotary cultivator 79 is separated from the tractor. The stand 90 has a bracket 91 and a front portion of a side cover 92. It is mounted on the outer surface. A support member 93 having a U-shape in a plan view is fixed to the bracket 91. The support member 93 is opened to the outside in the left and right, and a stand 90 made of a pipe material is vertically inserted into the support member 93, and a pin in the front-back direction is inserted. Is pivoted through 94,
By rotating the stand 90 from the rotary cultivator 79 outward, the stand 90 can be vertically inverted from the use posture to the retracted posture.

A support shaft 95 is inserted into the stand 90 below the pin 94 so as to be movable in the axial direction.
On the rear end side, a disc-shaped lock member (engaging portion) 97 that is removably fitted to upper and lower engaged portions 96A and 96B formed on one front and rear side wall of the supporting member 93 is attached and fixed. There is. A knob 98 is fixed to the front end of the support shaft 95.
8 and a coil spring 9 on the spindle 95 between the stand 90.
9, the coil spring 99 causes the support shaft 95 to
However, the lock member 97 is attached to the upper and lower engaged portions 96A and 96B.
The lock member 97 is urged in the axial direction so that the lock member 97 is fitted in the lower engaged portion 96B in the use posture shown by the solid line in FIG. 9
7 is fitted to the upper engaged portion 96A.

The stand device is particularly useful for an automatic tillage depth adjusting type rotary cultivator having no front gauge wheel, and the rotary cultivator can be mounted as close to the tractor as possible.
Minimize headland length and optimize weight balance. Although the rod support structure and the stand device are shown as applied to the rotary cultivator shown in FIG. 5, the rod support structure and the stand device can also be applied to the rotary cultivator 13 shown in FIGS. Applied to the means 51, the stand device is a transmission case 23 and / or a side frame 2
Attach to 4.

[0025]

According to the present invention described in detail above, the connection drive means 7 for moving the upper cover 3 back and forth by rotating the handle 58, and the connection drive for moving the support frame 34 up and down by the rotation of the handle 37. The means 36 is arranged close to each other so that the rotation trajectories A and B of the handles 37 and 58 overlap each other, and the handles 37 and 58 are foldable, so that the two handles 37 and 58 are provided.
Can be arranged in the most suitable position in the center of the rotary machine frame 5 in the left-right direction, and both connection drive means 7, 36 can be arranged in the center of the rotary machine frame 5 in the left-right direction. The movement of the cover 3 in the front-rear direction and the vertical movement of the support frame 34 can be smoothly performed without twisting or the like on the left and right.

Further, the rotation loci A of the handles 37 and 58,
At the position away from the overlapping part of B, each handle 3
Folding holding portion 5 for holding the folded state of 7, 58
4 and 55 are formed, so two handles 37 and 5
Even if 8 are arranged close to each other, when one is operated, the other can be held at a position where it does not interfere with the other, and it is possible to prevent the interference of the handle operation.

[Brief description of drawings]

FIG. 1 is a side view of a main part showing an embodiment of the present invention.

FIG. 2 is a view taken in the direction of the arrow X in FIG. 1;

FIG. 3 is a sectional side view of a rotary cultivator.

FIG. 4 is a rear view of the rotary cultivator.

FIG. 5 is a side view showing another example of the rotary cultivator.

FIG. 6 is a cross-sectional view showing an example of a rod support structure.

7 is a cross-sectional view taken along the line YY of FIG.

8 is a cross-sectional view showing an example of a stand device and corresponding to line ZZ in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cover device 2 Tillage part 3 Upper cover 4 Rear cover 5 Rotary machine frame 6 Top mast 7 Coupling drive means (expandable rod means) 35 Pivot body 36 Coupling drive means (expandable rod means) 37 Handle 57 Pivot body 58 Handle

Claims (2)

[Claims] 1. A rotary machine frame in which a rear cover (4) is pivotally supported at a rear end of the upper cover (3), and the upper cover (3) is movably supported in the front-rear direction with respect to the rotary machine frame (5). Top mast (6) located approximately in the center in the left-right direction of (5)
And driving means (7) for moving the upper cover (3) back and forth by rotating the handle (58).
And the support frame (34) protruding rearward is supported by the rotary machine frame (5) so as to be vertically movable, and the top mast (6) is connected.
The support frame (34) and the support frame (34) are connected by a connection drive means (36) for moving the support frame (34) up and down by rotation of the handle (37), and the both connection drive means (7, 36) are connected to the rotary machine frame (5). ) Is arranged near the center in the left-right direction so that the rotation loci (A, B) of both handles (37, 58) overlap and both handles (37, 58) are foldable. And rotary cover operating device. 2. Handles (37, 58) at positions deviating from the overlapping portions of the rotational trajectories (A, B) of the handles (37, 58) on the top mast (6).
The folding holders (54, 5) that hold the folded state of the
5) The rotary cover operating device according to claim 1, wherein the rotary cover operating device is formed.