JPH1080228A - Root arranging board driving mechanism in root arranging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the miniaturized and lightweight drive unit for a root arranging device designed to conduct root arrangement of grain culms before bound with a binder to be mounted primarily on a combine harvester. SOLUTION: This root arranging device R supported on a transverse frame 2 is made up of a crank shaft 7 to be driven by a drive shaft 3, a rod 9 with its one end supported on the crank shaft 7, a four-bar link mechanism 10 to be driven by the other end of the rod 9, and a root arranging board 11 connected to one link of the four-bar link mechanism 10, being designed to strike the plant foot side with the root arranging board 11 when the rod 9 is pulled by the crank shaft 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for aligning roots of cereals before binding in a binding machine mounted on a combine.

[0002]

2. Description of the Related Art A cutter and a tying machine are provided at the rear of a combine so that they can be cut and sprayed on a field or tied and released according to the use of the culm after threshing. Has become. And when using the binding machine, the grain culm sent from the threshing unit will be collected and bound at the binding unit of the binding machine with a scraping body, but the grain culm sent from the threshing unit will be in the direction Despite being constant, the stockholders are uneven. Therefore, it is necessary to arrange the stocks as a pre-treatment for binding the grain culm, and therefore, a root aligning device is used in combination with the binding machine.

[0003]

The root aligning device swingably supports the root aligning plate, connects one end of a rod to a crankshaft, and connects the other end to the root aligning plate. The movement is directly transmitted by a rod, and the root alignment plate is rocked by shock to strike the stock and align.

However, in this conventional apparatus, since the rotational movement of the crank is directly transmitted to the root alignment plate via the rod to give the root alignment plate a reciprocating swinging motion, the rod is pushed by the rod. The root alignment operation is performed by swinging the root alignment plate toward the tip side. Therefore, this rod must be quite thick to transmit enough force to perform the root alignment operation, and the rod support for transmitting such a large pushing force must also be robust. Therefore, the rooting device had to be large and heavy as a whole.

The present invention has been made to solve the above-mentioned problems of the conventional root aligning apparatus. The root aligning operation can be performed with a large force even when a thin rod is used. An object is to provide an inexpensive device with a simplified structure.

[0006]

A root aligning plate driving mechanism of a root aligning apparatus according to the present invention for achieving the above object supports the root aligning apparatus on a horizontal frame. Is a crankshaft driven by a drive shaft, a rod having one end supported by the crankshaft, a four-bar link mechanism driven by the other end of the rod, and one link of the four-bar link mechanism. , And is configured to perform an operation of hitting the stock side with the root alignment plate in an operation in which the rod is pulled by the crankshaft.

[0007]

The root aligning plate is connected to one link of the four-bar link mechanism and the rod is connected between the crankshaft and the link mechanism. When tension is applied to this rod, the root aligning plate is connected. In this case, the rod can be made to work, so that a rod having a small diameter can be used, and the drive device can be downsized.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. A root aligning device R according to the present invention is provided at the rear of a combine (not shown). The root aligning device R extends along a horizontal frame 2 provided on a frame 1 as shown in a perspective view of FIG. It is supported so that it can move sideways. A drive shaft 3 having a hexagonal cross section is disposed in front of the frame 1, and an end of the drive shaft 3 is provided with a scraping body 4 for collecting grain stalks in a binding machine.

A pulley 5 and a belt provided on the drive shaft 3 drive a crankshaft 7 by a pulley 6 (or a chain wheel and a chain). Is connected to one end 9a of a rod 9 and the other end 9b drives a four-bar link mechanism 10. Then, the root alignment plate 11 is moved by the arrow B through the link mechanism 10.
And a swinging motion of a return operation of B ′.

The present invention is characterized in that a tension is applied to the rod 9 particularly during the root alignment operation B. The horizontal frame 2 forms a square bar-shaped rail, and the root aligning device R is movably supported by a slider 12 fitted on the horizontal frame 2. The sprocket 13 provided on the chain is rotated by a knob 14 so that the sprocket 13
5, the root aligning device R can be moved laterally in accordance with the length of the grain stem.

As shown in FIG. 3, the link mechanism 10 is a four-bar link mechanism, and has a rear end of an arm 16 provided with a bearing of a pulley 5 whose tip is supported by a drive shaft 3. It is provided in. One shaft 17 of the link mechanism is fixed on the arm 16, and the links 18, 19, 20, and 21 are assembled via the shaft 17 so as to form a parallel link in a rectangular shape. As shown in FIGS. 2 and 3, a shaft 22 provided on the link 20 is supported by a bearing 22 a fixed to the root alignment plate 11.

As described above, the rear end 9b of the rod 9 driven by the crank 8 is connected to the upper end of the shaft S of the ball joint connecting the links 18 and 19,
The root aligning plate 11 is assembled so as to perform a “root aligning operation” in which the root aligning plate 11 swings in the direction of the arrow B in the operation in the direction of the arrow P in which tension acts on the rod 9 and hits the root of the grain stem. . FIG. 4 shows the relationship between the swing range of the rod 9 and the position of the ball joint provided at the rear end 9b of the rod 9, and the line CC 'is the center of the rod 9 in a horizontal state. Line, U
-U 'is a line representing the position where the crank 8 parallel to the center line CC' has risen most. In the embodiment of the present invention, in particular, the center portion S 'of the ball joint is set at a distance h at an intermediate portion of the distance H (corresponding to the arm length of the crank 8) between these two lines. It is eccentric.

On the other hand, the crank angle α is a “forward stroke angle”, and is a range in which the rod 9 is pulled within the crank angle α and the root aligning plate 11 performs the root aligning operation so as to hit the base. The crank angle β advanced from the crank angle α is the “return stroke angle”, and is a range in which the rod 9 is pushed within the crank angle β and the root aligning plate 11 performs a return operation away from the stock base.

As described above, within the distance H corresponding to the radius of the crank 8, the position of the ball joint S 'is
−C ′, the ball joint axis S is eccentric to the forward stroke side by the distance h from the forward stroke angle α.
And the rod 9 to which the rear end portion 9b is connected is held at an angle close to 90 °, so that a large tension is applied to the rod 9 and the root alignment operation is performed on the root alignment plate 11. It can be made to be.

On the other hand, in the range of the return stroke angle β of the crank 8, the angle between the rod 9 and the ball joint axis S becomes smaller than 90 ° by the amount of eccentricity from the central angle CC ′ at the distance h. However, this angle β is a stroke in which the root aligning plate 11 returns, and since a large reaction force does not act on the rod 9, a large force does not act on the ball joint shaft S. The diameter can be reduced.

[0016]

The root alignment plate driving mechanism of the root alignment device according to the present invention supports the root alignment device on a horizontal frame, and the root alignment device includes a crankshaft driven by a drive shaft; A rod having one end supported by the crankshaft, a four-bar link mechanism driven by the other end of the rod, and a root alignment plate connected to one link of the four-bar link mechanism; In the operation in which the rod is pulled by the crankshaft, it is configured to perform an operation of hitting the stock side with the root alignment plate.

Therefore, only the tension acts on the rod for transmitting the root alignment operation to the root alignment plate in this root alignment operation.
Manufacturing costs can be reduced. Further, since the root aligning motion is given on the tension side of the rod, vibration generated in the device can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a root alignment plate driving mechanism of a root alignment device according to the present invention.

FIG. 2 is a side view of the root aligning device.

FIG. 3 is a plan view of the root aligning device.

FIG. 4 is an explanatory diagram showing a movement range of a rod for driving a root alignment plate.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 frame 2 horizontal frame 3 drive shaft 4 raking element 7 crankshaft 8 crank 9 rod 10 link mechanism 11 root alignment plate 12 slider 16 arm R root alignment device

Claims (1)

[Claims] 1. A root aligning device is supported on a horizontal frame. The root aligning device includes a crankshaft driven by a drive shaft, a rod having one end supported by the crankshaft, and a A four-bar linkage driven by the other end,
The four-bar link mechanism includes a root alignment plate connected to one link, and is configured to perform an operation of hitting the stock side with the root alignment plate in an operation in which the rod is pulled by the crankshaft. Root alignment plate drive mechanism of root alignment device.