JPH0458294B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a grain culm binding device for a combine harvester or the like.

The purpose of this invention is to detect an abnormality when the notterbill binding cord does not come off from the notterbil during grain culm binding work, and to double-check the binding cord even if the binding cord is wrapped around the knotterbill.
To provide a grain culm device which prevents a grain culm from being triple-wound and causing a large bundling error.

The features of this invention for achieving the above object are as follows:
A knotter bill consisting of a movable piece and a fixed piece that are slidably guided to open and close the end of the binding string wrapped around the grain culm by a bill guide, and the knotter bill is rotationally driven to hold the binding string 27 in its mouth. A building guide that is pressed by the open state of the notter building when a bundling error occurs; a bundling error detection sensor 3 that detects a bundling error of the knotter building by being pressed for a predetermined time or more when the building guide stops; The grain culm binding device includes an alarm device that does not issue an alarm even if the detection sensor is momentarily pressed during normal operation, but issues an alarm when the building guide is pressed for a predetermined period of time or more.

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

FIG. 1 is a side view of a grain culm binding device according to an embodiment of the present invention, FIG. 2 is a partially enlarged view of FIG. 1, and FIG.
The figure is a circuit configuration diagram according to an embodiment of the present invention.
The figure is a side view of a grain culm binding device according to an embodiment of the present invention.

In FIGS. 1 and 2, the reference numeral 3 is a means for detecting bundling errors in the knotter building 1, ie, a sensor for detecting bundling errors, as described above. 5 is a needle that supplies the binding string 27; 6 is a binding string holder that holds the binding string 27; and 7 is a knot cover (not shown) protruding from a knot cover plate (not shown) in the direction of the knot 8. A mounting part for fixing in a position covering the entire surface of part 8, 8 is a knotter part equipped with a bill (notter bill) 1 for knotting a binding cord and a binding holder 6 for holding the end of the binding cord, 9 is a knotting part that is constantly driven downward. Patch car for pushing the culm, 10 is the knot 8
The gear 12 meshes with the gear 11, and 12 is a discharge arm for discharging the bundled grain culm. 13 is a grain culm passage formed between a platform 14 and a guide plate 16; 14 is a platform; 15 is a grain culm passage 1
a T-protrusion that drives the binding device by sensing the pressing force of the grain culm pressed by the packer 9 and actuating a clutch (not shown);
16 is a guide plate, and 27 is a binding string. In addition, reference number 1a is a movable piece formed in Notter Building 1, 1
b is a fixed piece formed on Notter Bill 1, 1c is a locking part formed in Notter Bill 1, 1d is a cam part also formed in Notter Bill 1,
Each knotter building 1 is driven when performing the binding work.

Next, in FIG. 3, reference numeral 3a indicates the knotter switch 3d is pressed by the protrusion of the building guide which is under pressure due to the knotter building 1 being opened due to a bundling mistake, and the knotter switch 3d is pressed until this pressure is released. This lamp 3a is a lamp that keeps on.
is constructed so that it lights up only at the moment when the notter switch 3d is pressed by the bill guide 2 and protrudes while the notter bill 1 is being driven normally. Reference numbers 3c, 3d, and 3h are normally open contacts, and when the building guide 2 that is pressed by the rotating building 1 protrudes to a predetermined position due to this pressure, it is a notch switch (limit switch) that is activated by the pressure, and 3g is a relay. Normally open contact of drive part R3f, 3
i is a normally open time limit operation contact (not shown) (terminal number 1-
5), and is configured such that when the normally open time limit operation contact (not shown) is closed, a base current flows, the transistor 3j becomes conductive, and the relay drive section R3f is excited. 3j is a transistor that performs a switching operation.

The operation of the above configuration will be explained below.

In performing the bundling work, the grain stalks sent into the grain stalk passageway 13 are first pulled in by the packer 9 and pressed between them and the T projections 15. The T projection 15 senses the pressure and swings slightly, and the binding operation is started by actuation of a clutch (not shown). The needle 5 rotates at the start of the tying operation, and the tying cord 27 held at the tip is wound around the grain culm. The binding cord 27 wound around the grain culm passes through the knotter building 1 and is fed into the binding cord holder 6. Subsequently, the knotter bill 1 is rotated by the bill guide 2 and operates to bind the grain culms with the binding cord 27. When the knotter building 1 is rotated by the building guide 2 and the two binding cords 27 are wound around the movable piece 1a and the fixed piece 1b of the knotter building 1, the locking portion 1c of the movable piece 1a
comes into contact with the cam portion 1d, the movable piece 1a becomes open, and continues to rotate with the two binding strings 27 locked, entering the process of forming a knot of the binding strings 27 with the building 1. When the knotter bill 1 enters the process of forming a knot of the binding string 27, the binding string 27 wrapped around the building 1 presses the movable piece 1a, so that the knotter bill 1 becomes in a closed state and securely clamps the binding string 27. When the knot of the binding string 27 is completely formed, the knotterbill 1 performs a backward operation by the operation of a handling device (not shown) to move the knotted portion and loosen it, and the movable piece 1a becomes open. Subsequently, the locking of the T-protrusion 15 becomes free, and the discharge rod (not shown) operates to press the bundled grain culm. The pressed bundled grain culm is T protrusion 1
5 is pushed out of the machine and the series of binding operations is completed.

The operations described above are for the case where Notter Building 1 is operating normally without making any bundling errors. If the knotter bill 1 is operating normally as described above, the bill guide 2 is pressed by the rotation of the knotter bill 1 and protrudes to a position where it presses the knotter switches 3c, 3d, and 3h provided in the bundling error detection sensor 3. Although the lamp 3a lights up momentarily, the alarm buzzer 3b of the alarm device is not activated (see FIG. 3 below). That is, when the building guide 2 momentarily presses the notch switches 3c, 3d, and 3h, the notch switch 3d closes, and the lamp 3a is turned on only at that moment. However, even if the notuta switch 3h closes momentarily, if the 3h does not remain closed for a predetermined period of time, the IC will fail.
Since the normally open contact (not shown) of the timer 3i does not close, the transistor 3j does not conduct.

Therefore, since the normally open contact 3g is not closed, the alarm buzzer 3a is not activated. However, if the knotter building 1 makes a mistake in tying, the tying string 27 supplied from the needle 5 will wrap around the building 1 and move the movable piece 1a.
The locking portion 1c comes into contact with the cam portion 1d, and the movable piece 1a is in an open state. In addition, tie string 2 is attached to this building 1.
7 winds around, the building guide 2 is compressed and remains protruding, unable to return to its original position. When the building guide 2 is in the above-mentioned state and the nota switches 3c, 3d, and 3h are pressed for a predetermined period of time or more, the lamp 3a, which had been blinking until then, is turned on, and the base current applied via the IC timer 3i turns on the transistor 3j. is conductive. When the transistor 3j becomes conductive, the relay drive section R
Since the contact 3f is energized and the normally open contact 3g is closed, the alarm buzzer 3b is activated to issue an alarm. The driving of the alarm buzzer 3b continues until the knotter bill 1 is released from the bundling error, and the bill guide 2 is released from protruding due to this release, and the knotter switches 3c, 3d, and 3h are opened.

As explained above, according to the present invention, the abnormal string wrapped around the Notterbill itself does not press the sensing body, but the string caught between the fixed piece and the movable piece of the Notterbill causes the Notterbill to move. This is an indirect way to detect an abnormality in which the notter building is no longer closed, and when the knotter building is wrapped around the knotter building and the notter building is in an open state, the rotational drive is stopped and the alarm device is activated by pressing the building guide for a predetermined period of time. Therefore, the alarm device will not be activated by the momentary protrusion of the building guide that rotates the Notter Building. Therefore, the operator can engage in other work (for example, operating a combine harvester) with peace of mind without receiving a false alarm of a bundling error every time the bill guide protrudes. In addition, if a bundling mistake occurs, the alarm device is activated, so the operator can take immediate action even if he or she is engaged in other work, making it possible to prevent double or triple bundling mistakes from occurring. It has a certain effect.

[Brief explanation of the drawing]

FIG. 1 is a side view of a grain culm binding device according to an embodiment of the present invention, FIG. 2 is a partially enlarged view of FIG. 1, and FIG.
The figure is a circuit configuration diagram according to an embodiment of the present invention. 1... Notter Building, 1a... Movable piece, 1b...
...fixing piece, 2... building guide, 3... bundling error detection sensor, 3b... alarm device, 27... bundling string.

Claims (1)

[Claims] 1 A knotter bill 1 consisting of a movable piece 1a and a fixed piece 1b that are slidably guided to open and close by a bill guide 2 at the end of a binding string 27 that is wound around a bundled grain culm, and this knotter bill 1 is rotationally driven to The bill guide 2 is pressed by the open state of the knotter bill 1 when the knotter bill 1 is opened when the knotter bill 1 is held in its mouth, and the bill guide 2 is pressed for more than a predetermined time when the bill guide 2 stops, thereby preventing the knotter bill 1 from being tied incorrectly. It has a bundling error detection sensor 3 that detects the bundling error, and an alarm device 3b that does not issue an alarm even if the bundling error detection sensor 3 is momentarily pressed during normal operation, but issues an alarm when the building guide 2 is pressed for a predetermined time or longer. Characteristic grain culm binding device.