JPS5930669Y2 - Binding string detection alarm device in combine harvester binding machine - Google Patents

Description

[Detailed description of the invention] Conventionally, when a tying machine is attached to a combine harvester and the waste straw is tied and discharged, the operator cannot visually confirm that the tying string has broken or that the tying string has run out. Since this method is not possible, there is a drawback that bundling errors occur continuously.

Even in the case of the Hawangman operator of the present invention, it is intended to accurately detect the breakage of the binding string or the disappearance of the binding string and issue an alarm to prevent bundling errors.

To explain the embodiment shown in the drawings below, 1 is a threshing device of a combine harvester, and at the rear thereof is a straw conveying cheno 2.
A binding device 3 is provided to bind the waste straw sent back by the threshing device 1, and a string ball 5 is arranged along the side of the binding device 3 at the rear of the paddy tank 4 provided on the side of the threshing device 1. It is placed there.

A support shaft 8 and a single detection switch 9 are attached to the lower surface of the support plate 7 protruding from the rear of the string ball support frame 6, and the support shaft 8 has two swing arms 10, 11 is pivotally supported, and the heavy cone 10' at the tip of one swinging arm 10 is in contact with the inner circumferential surface of the cylindrical string ball 5, so that the swinging arm 10 is connected to the binding string 5'. As it is drawn out and the amount of acid increases, it descends, and just before it runs out, for example, when the remaining amount is in one row, the protrusion 1cf at the base turns on the detection switch 9.

The ring 1 attached to the tip of the other swinging arm 11
1', a binding cord 5' is inserted through the cord brake ring 12 attached to the drawer part of the cord ball support frame 6 and pulled out toward the first hanging ring 13, and the protruding piece 11'' at the base is connected to the A tension ring 1 is opposed to the detection switch 9, the binding string 5 is held on the needle 16 via hanging rings 14 and 15 provided on the binding device 3 side, and has a tension spring 11 between the hanging rings 14 and 15.
When a suitable tension is applied to the binding string 5' by 8,
That is, when the binding string 5' is not cut, the swinging arm 11 is in the illustrated posture, but when the binding string 5' is broken and the tension in the binding string 5' disappears or decreases, the ring 11
Since the swing arm 11 becomes approximately vertical due to its own weight, the protrusion 11 turns on the detection switch 9.

Since an alarm lamp 21 (or a buzzer) attached to the operation panel 22 is inserted into the alarm circuit 20 between the detection switch 9 and the power source 19, the remaining amount of the binding strings 5' is kept in one line. The detection switch 9 is turned ON and the warning lamp lights up when the cable is broken or the cable tie 5' breaks, so the operator can either supply a new string ball 5 or pull out the cable tie 5'. The needle 16 is then held, and the work is resumed.

As mentioned above, this invention has a member that is displaced due to a decrease in the tension of the binding string during the string path between the needle and the string brake, and a member that is displaced due to a decrease in the tension of the binding string, and the tip of the string comes into contact with the inner circumferential surface of the string ball, reducing the winding amount. The two displaceable members are pivotally supported on a common support shaft provided near the drawer part of the string ball, and the two displaceable members are
One switch inserted into the alarm circuit was linked so that the switch would close immediately before the binding cord ran out or when it broke, so the switch would close when the binding cord broke or immediately before the binding cord ran out. This allows the device to be closed and to issue an alarm, making it possible to keep the number of bundles to a minimum even when there is no assistant in the driver's seat.

The housing pivots a member that displaces due to a decrease in the tension of the binding string and a member that displaces due to a decrease in the amount of winding of the string ball on a common support shaft, and connects these displaceable members to one switch. Therefore, only one support shaft and one switch are required, which makes it possible to obtain the device at a significantly low cost, and it can be easily installed even in a narrow area.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a perspective view of a combine harvester, Fig. 2 is a side view showing a partial cross section of the main part, Fig. 3 is a perspective view of the operation panel, FIG. 4 is a rear view of the swing arm and the detection switch, and FIGS. 5 and 6 are action explanatory diagrams. 3... Binding device, 5... Kanedama, 10.1
1... Swinging arm, 12... String brake wheel, 16... Needle.

Claims (1)

[Scope of utility model registration request] During the string path between the needle and the string brake, a member is displaced due to a decrease in the tension of the binding string, and a member is displaced when the tip abuts the inner circumferential surface of the string ball and the amount of winding is reduced.
The two displacing members are pivotally supported on a common shaft provided near the drawer part of the string ball, and the two displacing members are inserted into one switch that is inserted into the alarm circuit. Time,
A tying string sensing and alarm device for a tying machine for a combine harvester, characterized in that a switch is connected so as to close it.