JPH0113802B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a dual-use desk plow, and more particularly, to a method for tilling and turning soil using a plurality of dual-use desk plows.

(Prior art) Conventionally, desk plows for plowing and turning soil have been developed by rotating a plurality of desk plows in the horizontal direction, as described in Japanese Utility Model Publication No. 38-5706, for example. A configuration is known that converts and sets the direction to a rightward tilted state or a leftward tilted state.

(Problems to be Solved by the Invention) According to the configuration described in the above-mentioned publication, a certain effective space is required in which a plurality of desk plows can horizontally rotate in the longitudinal direction, and the entire machine body is rotated in the longitudinal direction. In some cases, desk plows may come into contact with the rear of the tractor or other towing vehicle that is towing the machine, making it impossible to turn the machine over.Also, multiple desk plows may rotate as the machine is being towed. Because it rotates, it has poor ability to dig into the soil, and depending on the soil conditions, it may be difficult to turn plowing at a certain plowing depth. There is a problem in that the structure that rotates and reverses displacement becomes complicated.

Therefore, the present invention was made in view of the above points, and it enables multiple desk plows to be reliably reversed in a small effective space, prevents the machine body from elongating in the longitudinal direction, and also enables multiple desk plows to be turned over in a small effective space. The purpose of the present invention is to provide a dual-purpose desk plow with a simple structure that has good biting performance, enables the soil to be plowed and turned over at a constant plowing depth.

[Structure of the invention]

(Means for Solving the Problems) The dual-use desk plow of the present invention has a main body frame and a plurality of plows that are attached to the rear lower part of the main body frame so as to be rotatable in the vertical direction. A drive shaft on which desk plows are mounted side by side, and this drive shaft is rotated in the vertical direction to reverse the plurality of desk plows to a rightward tilting state and a leftward tilting state with respect to the traveling direction, and to change the set position. and a supporting cylinder device.

(Function) In the dual-purpose desk plow of the present invention, when performing right-hand reversal work on the outward trip, when the piston rod is expanded and contracted by the cylinder device, the drive shaft having the plurality of desk plows moves against the holding part of the main body frame. It is rotated vertically in an arc around the center, and each desk plow and drive shaft are set to be tilted to the right at a predetermined tilt angle with respect to the direction of movement of the machine, and are supported in this set position. .

For example, when the machine is towed by a tractor and the drive shaft is driven in conjunction,
Each desk plow attached to this drive shaft is driven, and each desk plow sequentially cuts the soil in the field to the right in the direction of travel and continuously plows and inverts it in the direction of inclination.

Next, on the return trip, when performing left reversal work on the plowing reversal side of the outbound trip, the cylinder device is activated and its piston rod is extended and retracted, so that the drive shaft draws an arc around the holding part of the main body frame. The desk plow and the drive shaft are set to be tilted to the left at a predetermined tilt angle with respect to the traveling direction of the machine, and are supported at this set position.

As the machine is towed by a tractor, the drive shaft is driven in reverse, and each desk plow on this drive shaft sequentially cuts the soil in the field to the left in the direction of travel, and then cuts the soil in the slope direction. The tillage is continuously reversed.

(Example) Hereinafter, one implementation of the present invention will be described based on the accompanying drawings.

In the figure, reference numeral 1 denotes a main body frame. At the front end of this main body frame 1, connecting parts 2 that connect to each part of the three-point suspension mechanism of the tractor are provided on both sides and the upper part, and at the rear of this main body frame 1. A hollow cylindrical holding body 4 is formed at the lower end of the vertical portion 3 formed at the end. Further, a stopper 6 made of a threaded rod or the like is attached to support pieces 5 protruding from both sides of the holding body 4 so as to be vertically adjustable.

Next, a proximal end 8 of a mission 7 is rotatably fitted and supported within the holding body 4. The base end 8 of the transmission 7 is formed into a cylindrical shape with an outer diameter that slides against the inner wall of the holding body 4 at one side of the case body 9, and is attached opposite to the side walls on both sides of the case body 9. Between the bearings 10 on both sides, the middle part of a drive shaft 11 inclined in the front-rear direction at a predetermined inclination angle with respect to the traveling direction is rotatably suspended horizontally. A bevel gear 12 is fixed to the side portion, and this bevel gear 12 is meshed with a bevel gear 15 fixed to an output shaft 14 of a hydraulic motor 13 for forward/reverse rotation. It is fitted and fixed into the mounting hole 16. Further, a plurality of desk plows 17 are integrally mounted on both sides of the drive shaft 11 protruding from the case body 9 at intervals such that the soil can be continuously plowed and turned over.

Next, one end of the reversing arm 18 is fixed to the outer end surface of the base end 8 of the case body 9 with a plurality of bolts 19, and a support shaft 20 protruding from the tip of the reversing arm 18 is attached as a cylinder device. The tip of a piston rod 22 of a hydraulic cylinder 21 is rotatably attached, and the base end of this hydraulic cylinder 21 is rotatably supported on a mounting shaft 23 projecting upward from the vertical portion 3 of the main body frame 1. has been done.

The hydraulic motor 13 and hydraulic cylinder 21 are operatively connected to a hydraulic drive mechanism of a tractor.

Next, the operation of the above configuration will be explained.

Each connection part 2 of the main body frame 1 is connected to each part of the three-point suspension mechanism of the tractor, and the hydraulic drive mechanism of the tractor is connected to the hydraulic motor 13 through a switching valve and to the hydraulic cylinder 21, respectively. do.

First, when performing right-hand reversal work on the outward trip, when the piston rod 22 is expanded and contracted by the hydraulic cylinder 21, the plurality of desk plows 1
The drive shaft 11 having a drive shaft 7 is rotated vertically in an arc around the holding body 4 through its case body 9, and as shown in each figure, each desk plow 17 and drive shaft 11 is converted and set to be tilted to the right at a predetermined tilt angle with respect to the traveling direction of the machine.
As a result, the reversing arm 18, which is integral with the base end 8 of the case body 9, is supported from above and below by one of the stoppers 6 and the piston rod 22, so that each desk plow 17 and drive shaft 11 are tilted at a predetermined inclination. It is inverted and supported tilted to the right at an angle.

When the machine is towed by a tractor and the hydraulic motor 13 is driven by the hydraulic drive mechanism of the tractor, the drive shaft 11 is driven in conjunction with the bevel gear 15 of the output shaft 14 and the bevel gear 12 meshed with the bevel gear 15. At the same time, each desk plow 17 attached to this drive shaft 11 is driven, and each desk plow 17 moves the field.
The soil is successively cut to the right in the direction of travel and continuously plowed and turned over in the direction of the slope.

Next, on the return trip, when performing left reversal work on the plowing reversal side in the outbound trip, the hydraulic cylinder 21 is actuated and its piston rod 22 is extended and retracted, so that the reversal arm 18 is rotated counterclockwise in FIG. At the same time, the base end 8 of the case body 9 integrated with the reversing arm 18 is rotated in an arc around the holding body 4, and each desk plow supported by the case body 9 The drive shaft 11 having the drive shaft 17 is rotated up and down, and its position is changed from the state shown by the solid line in FIG. The tilt angle is converted to the left tilt state. As a result, the reversing arm 18, which is integral with the base end 8 of the case body 9, is supported from above and below by the other stopper 6 and the piston rod 22, so that each desk plow 17 and drive shaft 11 are tilted at a predetermined inclination. It is inverted and supported at an angle to the left.

Then, as the machine is towed by a tractor, the drive shaft 11 is driven by the reverse drive of the hydraulic motor 13, and each desk plow 17 of the drive shaft 11 sequentially cuts the soil in the field to the left in the direction of travel. This is then continuously plowed in the direction of the slope.

In this way, each desk plow 17 and drive shaft 11 are vertically reversed around the holding body 4, converted to the rightward tilting state or the leftward tilting state, and the set positions are locked. The desk plows 17 are used as a dual-purpose type, and each desk plow 17 smoothly performs reciprocating plowing work.

In the above embodiment, the drive shaft 11 is driven in conjunction with the hydraulic motor 13, but the drive shaft 11 is not limited to this, and may be driven by other drive means. It is preferable that the drive direction of the shaft 11 is automatically changed along with the reversal of the set position of the desk plow 17.
That is, it is desirable that the desk plow 17 always rotate in the normal direction with respect to the direction of travel. Further, the desk plow 17 is not limited to a curved disk shape, but may have a shape having an uneven portion on the outer peripheral edge.

〔Effect of the invention〕

According to the present invention, by providing a drive shaft on which a plurality of desk plows are mounted side by side so as to be rotatable in the vertical direction, the plurality of desk plows can be tilted to the right with respect to the direction of travel in a small effective space in the front and back direction. Or it can be reliably supported inverted to the left tilted state,
This prevents the fuselage from becoming longer in the longitudinal direction, and also prevents the front end of the front desk plow or drive shaft from coming into contact with the towing vehicle when set, making it impossible to reverse the displacement of multiple desk plows. In addition, multiple desk plows are forcibly driven, so that the soil can be reliably plowed and turned over at a constant plowing depth with good penetration into the soil.
Furthermore, since the drive shaft can be reversed up and down without using a complicated link mechanism, it is possible to provide a dual-use desk plow with a simple structure, easy handling, and excellent workability.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view of the dual-use desk plow, FIG. 2 is a side view taken from the direction of arrow a, and FIG. 3 is a cross-sectional plan view taken along line bb--b of the same. DESCRIPTION OF SYMBOLS 1...Main frame, 11...Drive shaft, 17...Desk plow, 21...Cylinder device.

Claims (1)

[Scope of Claims] 1. A main body frame, a drive shaft which is attached to the rear lower part of the main body frame so as to be vertically rotatable, and has a plurality of desk plows arranged in parallel for continuously tilling and reversing the soil. , a cylinder device that rotates the drive shaft in the vertical direction to reverse the plurality of desk plows to a rightward tilting state and a leftward tilting state with respect to the traveling direction, and supports the set position. Dual-use desk plow. 2. The dual-use desk plow according to claim 1, wherein the drive shaft is interlocked and connected to a hydraulic motor for forward and reverse rotation provided on the main body frame.