JPS6317322Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention is a threshing device mounted on a combine harvester. This is an idea regarding a tip control plate to prevent the entire culm from being drawn in.

(B) Prior Art Conventionally, in a threshing device mounted on a combine harvester, a technology is known in which a long and short culm sensor is provided so as to be able to protrude freely on the entrance iron plate.

(c) Problems that the invention aims to solve Grain culms that are harvested by a combine harvester vary in length and length depending on the growth condition, variety, and region.
When transported and introduced into the threshing device, the position of the ear tip becomes extremely shallow or extremely deep relative to the handling barrel, resulting in unhandled culms or culms being pulled into the handling chamber, leading to a decrease in threshing performance. It is.

In order to resolve this situation, a length adjustment device is provided.

However, by installing a long/short culm adjustment device, the problems caused by the length of the culm could be resolved, but there is still a problem where the tip of the culm engages with the handling teeth first and is pulled out due to how bent or broken the culm is. This problem cannot be resolved.

In particular, if the amount of grain culms is too large or the culms are bent in a directional manner, the grain head is transferred from the vertical conveyor to the feed chain at the moment when the grain head is transferred from the grain head to the feed chain. There was a problem in that the part came into contact with the handling teeth and was pulled out into the threshing device when the clamping force was weak.

The present invention aims to solve this problem in that the tip of the stalk is taken into the handling barrel earlier than the base of the stock.

(d) Means for solving the problem The purpose of the present invention is as described above. Next, the configuration for achieving the purpose will be explained.

On the entrance iron plate 8 of the threshing device mounted on the combine, a head control plate 9 is provided which is movable in the culm length direction of the grain culm held between the feed chains 14,
The tip control plate 9 is always moved to a position where the tip passes through the entrance iron plate 8 in conjunction with long and short culm sensors 10 and 11 that detect the culm length of the grain culm.

(E) Embodiment The purpose and structure of the present invention are as described above. Next, the structure of the embodiment shown in the attached drawings will be explained.

FIG. 1 is an overall plan view of the combine harvester of the present invention.

Grain culms that are being erected are divided at the base by side dividers 1 and 3 and center divider 2, and two rows are introduced into the grain culm passage.

The lodging grain culm is raised at the tines 5 and 5 of cases 4 and 4.
The stock base is harvested from the raking wheel by a reaping device, transferred to the lower conveying device, and finally to the vertical conveying device 7 to reach the feed chain 14.

The tip portion is engaged with the tines of the upper conveyance device 6 from the lifting case 4 and placed on the entrance iron plate 8.

The entrance iron plate 8 is installed from the upper part of the entrance of the handling barrel 12 of the threshing device.
Long and short culm sensors 10 and 11 are protruded and suspended upward, and a signal is sent when the long and short culm sensors 10 and 11 rotate rearward due to the moving pressure of the tip of the ear.

Among the long and short culm sensors 10 and 11, when the long culm sensor 10 is activated, the upper end of the vertical conveying device 7 moves to the left in the direction of movement, and the feed chain 1
It moves in the direction away from the starting edge of 4.

When only the short culm sensor 11 operates, or when the short culm sensor 11 also does not operate, the vertical conveyance device 7 moves to the right in a direction that touches the starting end of the feed chain 14.

The tip of the grain culm is held by the feed chain 14 and passes through the threshing device, while the tip is held by the handling teeth 1 of the handling barrel 12.
3, and the waste straw after threshing is guided to a waste straw processing device 16 by a waste straw chain 15.

The fine grains that have been threshed and sorted are stored in a bag on a pedestal 19 by a lifting cylinder 18.

21 is a control device, 20 is a seat, 17 is an engine, and 22 is a tachometer.

FIG. 2 is a drawing showing the tip control plate 9 of the present invention in a protruding state for use with short culms, FIG. 3 is a drawing showing a state in which it is retracted for use with long culms, and FIGS. 4 and 5 are other embodiments. FIG. 6 is a drawing showing the long and short culm sensors 10 and 11.

The long and short culm sensor constituted by the long culm sensor 10 and the short culm sensor 11 is installed at the entrance of the threshing section on the entrance iron plate 8, and the long culm sensor 10 and the short culm sensor 11 are suspended from above with a certain gap. There is.

The pressure of the tip of the flowing culm causes the long and short culm sensors 10 and 11 to rotate backward, thereby activating the limit switch. 24 is a limit switch terminal box.

The tip control plate 9 of the present invention is provided on the entrance iron plate 8 in front of the long culm sensor 10 and the short culm sensor 11, and receives signals from the long and short culm sensors 10 and 11 similarly to the vertical conveyance device 7. It is configured to protrude and retreat so as to be positioned exactly at the position of the tip of the grain culm.

In the embodiments shown in FIGS. 2 and 3, a motor shaft 9a is projected from the electric motor 23, and the tip control plate 9 is rotated by the motor shaft to be projected and retracted.

When the entrance iron plate 8 is wide, the tip control plate 9 of the present invention is provided at the tip of the entrance iron plate, so that the engagement state between the tip and the long and short culm sensors 10 and 11 is not provided, but the width of the entrance iron plate 8 If the tip control board 9 is placed just before the long and short culm sensors 10 and 11, the sensitivity of the long and short culm sensors 9 will be affected. It is a good thing.

22 is a tachometer for the handling cylinder 12.

In the embodiment shown in FIGS. 4 and 5, the tip control plate 9' is configured to be slidable in the culm length direction,
A pinion 25 of an electric motor 23' is engaged with a rack 26 provided on the tip control plate 9', so that the tip control plate 9' is projected and retracted.

A is the grain culm.

(f) Effects of the invention Since the invention is constructed as described above, it has the following effects.

That is, in the case of a short culm, the tip control plate 9 protrudes, and in the case of a long culm, the tip control plate 9 is retracted, so that the tip of the grain culm and the stock base do not move back and forth, and are always in a normal posture. This provides a certain amount of resistance to the tip of the tip as it enters the handling room.

Therefore, at the moment when the stalk part of the grain culm is transferred from the vertical conveyance device to the feed chain, at a moment when the clamping state is weak, the tip part first engages with the handling teeth and is drawn in, resulting in the phenomenon of grain culm being pulled out. It is now possible to prevent this from occurring.

[Brief explanation of the drawing]

Fig. 1 is an overall plan view of the combine harvester of the present invention, Fig. 2 is a drawing showing a state where the tip control plate is protruded for use with short culms, Fig. 3 is a drawing showing a state where it is retracted for use with long culms, and Fig. 4 The figures are drawings showing a protruding state for short culms in another embodiment, FIG. 5 is a drawing showing a state for long culms shown in FIG. 4, and FIG. 6 is a drawing showing a long and short culm sensor. 8... Inlet iron plate, 9... Tip control board, 10...
Long culm sensor, 11...Short culm sensor, 12...
Handling cylinder, 13... Handling tooth, 23... Electric motor.

Claims (1)

[Scope of utility model registration request] On the entrance iron plate 8 of the threshing device mounted on the combine, a head control plate 9 is provided which is movable in the culm length direction of the grain culm held between the feed chains 14,
This threshing device for a combine harvester is characterized in that the head control plate 9 is always moved to a position where the head passes through the entrance iron plate 8 in conjunction with long and short culm sensors 10 and 11 that detect the culm length of grain culms.