JP3984232B2 - Rotary tillage device - Google Patents

Description

  The present invention relates to a rotary cultivator used by being attached to a management machine, a cultivator, a tractor, and the like. In a rotary tiller provided with a pair of pivotally supported side covers, the side cover can be opened and closed with the handle.

Conventionally, the amount of soil covering in the case of performing soil covering work on a crop using a rotary tiller for a management machine or the like has been performed by opening the side cover and operating the throttle lever. When the amount of soil covering is changed by operating the throttle lever, there is a disadvantage that the vehicle speed and traction force fluctuate at the same time.Therefore, in actual work, the amount of soil covering to the crop is mainly adjusted by adjusting the opening of the side cover. I was adjusting. There exists a thing of patent document 1 as a rotary tillage apparatus provided with the conventional rotary cover.
Japanese Patent Laid-Open No. 11-318101

Thus, in a conventional rotary tiller for a management machine or the like, when opening and closing the side cover of the rotary and trying to adjust the amount of soil covering, the operator operating the management machine interrupts the operation, Adjust the cover to determine the amount of soil covering. In addition, when there is a rotary tiller at the front of the management machine, the side cover is opened and closed around the front side of the management machine. However, if this opening / closing operation is attempted in a basket where crops are growing, the both sides of the management machine are covered with crops. It was necessary to move forward and move forward and open and close the side cover over the crops of the fence. In addition, when the height of the crop is high, there is a problem that it cannot be operated over the crop. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to propose a rotary tiller capable of opening / closing a rotary side cover at a handle portion.

  In order to solve the above-described problems, the present invention provides an upper surface cover installed in a substantially horizontal direction above a rotary, and covers the side surface of the rotary supported by the left and right ends of the upper cover and opens and closes outward and upward. A rotary tiller provided with a pair of side covers that are supported so as to be able to support, an opening turning arm projecting obliquely upward from the vicinity of a support shaft outside the side cover at a position where the side cover is closed; A closing rotary arm projecting obliquely upward from the vicinity of the support shaft outside the side cover at a position where the side cover is closed, and a tip disposed on the top surface of the top cover with the side cover closed An opening bracket projecting at a position substantially opposite to the front end of the opening rotation arm of the opening, and the closing rotation when the front end is installed on the upper surface of the top cover and the side cover is open. Arm tip and outside A closing bracket projecting at a position facing the upper direction, an operating lever pivotally supported by the handle portion, and a drum integrally fixed to the lever on the supporting shaft portion of the operating lever; An opening outer cable with one end attached to the tip of the opening bracket and the other end attached to the handle near the drum; and one end attached to the tip of the closing bracket and the other end to the handle near the drum. An attached closing outer cable and an opening portion in which an intermediate portion is housed in the opening outer cable, one end is connected to the tip of the opening turning arm, and the other end is wound around the drum in one direction. The inner cable and the middle part are housed in the closing outer cable, one end is connected to the tip of the closing rotary arm, and the other end is wound around the drum in the other direction and connected. Characterized in that a runner cable.

Here, the opening turning arm, the closing turning arm, the opening bracket, the closing bracket, the operation lever, the drum, the opening outer cable, the closing outer cable, and the opening inner. It is also possible to provide a cable and the opening inner cable for each of the left and right side covers. The opening turning arm, the closing turning arm, the opening bracket, the closing bracket, the opening outer cable, the closing outer cable, the opening inner cable, and the opening inner cable, For each of the left and right side covers, and one each of the operating lever and the drum, and a pair of the inner cable for opening and the inner cable for opening are wound around and connected to the drum. Is possible.

  As described above, according to the present invention, the side cover can be opened and closed by the operation of the operation lever provided on the handle part, so that the operator can stop the management machine and turn the handle part without turning forward. It is possible to adjust the amount of soil covering by opening and closing the side cover at hand, improving workability.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a side view showing the entirety of a rotary tiller according to the present invention attached to a tiller, and FIG. 2 is an enlarged view of a part of the handle part of FIG. In FIG. 1, reference numeral 1 denotes a rotary tiller, in which a rotary 4 is disposed between a front wheel 2 and a rear wheel 3. The rotary 4 is covered with an upper cover 5 and a side cover 6. An opening bracket 7 and a closing bracket 8 are attached to the upper surface cover 5, and one ends of an opening outer cable 11 and a closing outer cable 12 are connected to each other. As shown in FIG. 2, the other ends of the opening outer cable 11 and the closing outer cable 12 are installed on the side surface of the drum 15 fixed to the support shaft portion of the operation lever 14 provided on the handle portion 13. The metal fitting 16 is connected.

FIG. 3 is a plan view of the state in which the side cover 6 is closed, and FIG. 4 is a front view of FIG. 3 viewed from the front. 5 is a plan view of the state in which the side cover 6 is opened, and FIG. 6 is a front view of FIG. 5 viewed from the front. As shown in these drawings, the upper surface cover 5 covering the upper surface of the rotary 4 includes a central upper surface cover 5a covering the central portion, a left upper surface cover 5b and a right upper surface cover 5c which are held by being hinged to the left and right. Consists of. Here, paying attention to the left upper cover 5b, a side cover 6 is hinged to the left end of the left upper cover 5b so as to freely open and close from the vertical position to the horizontal position.

As shown in FIG. 4, an opening turning arm 17 and a closing turning arm 18 are mounted side by side on the outer upper portion of the side cover 6 with the tip projecting obliquely upward. As shown in FIGS. 3 and 4, an L-shaped opening bracket 21 is attached to a substantially central portion of the upper surface of the left upper cover 5b. Similarly, a closing bracket 22 having a crank section is attached to the left portion of the upper surface of the left upper cover 5b. The front end of the closing bracket 22 protrudes obliquely upward on the left side. The opening bracket 21 is fixed with a threaded portion 23 at the end of the opening outer cable 11 passing therethrough. Similarly, a threaded portion 24 at the end of the closing outer cable 12 is fixed to the closing bracket 22 through it.

An opening inner cable 25 is inserted into a hollow portion of the opening outer cable 11, and an end thereof is connected to a tip of the opening rotation arm 17. Similarly, a closing inner cable 26 is inserted into the hollow portion of the closing outer cable 12, and its end is connected to the tip of the closing rotary arm 18. The other ends of the opening inner cable 25 and the closing inner cable 26 are wound and connected to a drum 15 that is integrally fixed to the operation lever 14 around a support shaft portion of the operation lever 14 shown in FIG. .

With this configuration, when the operation lever 14 in FIG. 2 is rotated to the right, the opening operation is performed, and the opening inner cable 25 is wound around the drum 15 and pulled, and the closing inner cable 26 is reversed. It is released from the drum 15 and returned. As shown in FIGS. 5 and 6, the side cover 6 at that time has the opening inner cable 25 pulling the opening turning arm 17 rightward to open the side cover 6 leftward and upward. At the same time, the closing inner cable 26 extends to allow the closing turning arm 18 to turn. Since the side cover 6 is thus opened, the amount of soil covered by the rotary 4 increases.

On the other hand, when the operation lever 14 in FIG. 2 is rotated leftward, the closing inner cable 26 is wound around the drum 15 and pulled, and conversely, the opening inner cable 25 is released from the drum 15 and returned. . As shown in FIGS. 3 and 4, the side cover 6 at that time closes the side cover 6 by the closing inner cable 26 pulling the closing turning arm 18 leftward. At the same time, the opening inner cable 25 extends to allow the opening turning arm 17 to turn. Since the side cover 6 is closed in this way, the amount of soil covered by the rotary 4 is reduced.

In addition to operating the operating lever 14 to the open position and the closed position, it is also possible to stop at the intermediate position and continuously adjust the amount of soil covered by the rotary 4. FIG. 7 shows a state in which the side cover 6 is adjusted in the middle. In the illustrated example described above, the mechanism for opening and closing the left side cover 6 has been described. However, the mechanism for opening and closing the right side cover by opening and closing the handle on the right side cover (not shown) in the same manner. Can be provided. In addition, it is possible to provide an operation lever for each of the left and right side covers so that the left and right side covers can be opened and closed simultaneously with a single operation lever. . In the illustrated example, the opening turning arm 17 and the closing turning arm 18 are mounted side by side. However, the opening inner cable 25 and the closing inner cable are formed by using these as one turning arm. It is also possible to connect both.
In addition, the present invention has been described on the assumption that it is used on the front side with respect to the traveling direction, but it can also be used on the rear side at the same time. Applicable to both.

  The present invention relates to a rotary tillage device that is used by being attached to a management machine, a tiller, a tractor, and the like, and can be used to open and close a cover that covers the top surface of a rotary in addition to opening and closing a side cover of a rotary. It is.

It is a side view showing the whole rotary tillage device concerning the present invention. It is the enlarged view which showed a part of handle part of FIG. It is a top view in the state where the side cover was closed. It is the front view which looked at FIG. 3 from the front. It is a top view in the state where the side cover was opened. It is the front view which looked at FIG. 5 from the front. It is a front view which shows the opening / closing range of a side cover.

Explanation of symbols

1 Rotary tillage device

2 Front wheels

3 Rear wheels

4 Rotary

5 Top cover

5a Center top cover

5b Left top cover

5c Right top cover

6 Side cover

7 Opening bracket

8 Closing bracket

11 Opening outer cable

12 Outer cable for closing

13 Handle part

14 Control lever

15 drums

16 brackets

17 Rotating arm for opening

18 Rotating arm for closing

21 Opening bracket

22 Closing bracket

23, 24 Threaded part

25 Opening inner cable

26 Inner cable for closing

Claims (3)

A top cover installed substantially horizontally above the rotary, and a pair of side covers supported by the left and right ends of the top cover so as to cover the side of the rotary and to be able to open and close outward In the rotary tiller provided,

An opening turning arm projecting obliquely upward from the vicinity of a support shaft outside the side cover at a position where the side cover is closed;

A closing rotary arm projecting obliquely upward from the vicinity of a support shaft outside the side cover at a position where the side cover is closed;

An opening bracket that is installed on the upper surface of the upper surface cover and protrudes at a position that is substantially horizontally opposed to the distal end of the opening turning arm when the side cover is closed;

A closing bracket that is installed on the upper surface of the upper surface cover and that protrudes at a position facing the front end of the closing rotary arm in a state in which the side cover is open and the outer side obliquely upward;

An operation lever pivotally supported on the handle portion;

A drum fixed integrally with the lever to the support shaft portion of the operation lever;

An opening outer cable having one end attached to the tip of the opening bracket and the other end attached to a handle near the drum;

A closing outer cable having one end attached to the tip of the closing bracket and the other end attached to a handle near the drum;

An opening inner cable having an intermediate portion housed in the opening outer cable, one end connected to the tip of the opening rotating arm and the other end wound around the drum in one direction;

A closing inner cable having an intermediate portion housed in the closing outer cable, one end connected to the tip of the closing rotary arm and the other end wound around the drum in the other direction;

A rotary tiller characterized by comprising. The rotary tiller according to claim 1,

The opening turning arm, the closing turning arm, the opening bracket, the closing bracket, the operation lever, the drum, the opening outer cable, the closing outer cable, the opening inner cable, and the opening A rotary tiller comprising an opening inner cable for each of the left and right side covers. The rotary tiller according to claim 1,

The opening turning arm, the closing turning arm, the opening bracket, the closing bracket, the opening outer cable, the closing outer cable, the opening inner cable, and the opening inner cable. Each of the left and right side covers is provided, and each of the operation lever and the drum is provided, and each of the opening inner cable and the opening inner cable is wound around and connected to the drum. Rotary tillage device.

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