JPS5817565B2 - Combine harvester - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stem culm conveying device for a combine harvester, which is mainly used as a handling depth changing device for appropriately adjusting the insertion length of the tip portion into a threshing device.

In the stem culm conveyance device of a combine harvester as described above, the stem clamping conveyance device, which is arranged at an appropriate vertical interval, is placed at the beginning of conveyance, relative to the ear end locking conveyance device, which is disposed along the stem culm conveyance path. A means of changing the handling depth by configuring the center to be swingable laterally has been considered, but in this way, the rear part of the stock clamping and conveying device is swung laterally around the starting end. In this case, the stock position with respect to the feed chain fixed to the threshing device is changed every time the handling depth is changed.
It is easy for the posture to be disturbed when it is delivered to the feed chain, and as a result, errors in delivery to the feed chain or omissions may occur, or the adjustment amount for changing the handling depth may not be determined.

The present invention aims to solve such problems,
Adopts a configuration in which the stock transfer device is horizontally oscillated, so that the stem culm delivery posture to the feed chain does not change significantly even when the handling depth is changed and the delivery is stable and reliable. It is an object of the present invention to provide a stem culm conveying device for a combine harvester that can increase the amount of adjustment for changing the handling depth.

That is, in the stem culm conveyance device of the combine harvester of the present invention, the plant head clamping conveyance device, which is arranged at an appropriate vertical interval, is placed at the conveyance starting end with respect to the ear end locking conveyance device disposed along the stem culm conveyance path. near the starting end of the feed chain attached to the threshing device and near the terminal end of the stem culm conveyance path, with the stump side of the conveyed stem culm facing the starting end of the feed chain. A plant head delivery and conveyance device for delivering and conveying the plant head is positioned above the plant head clamping and conveying device and is arranged in a constant posture, and the intermediate portion of the stem culm conveyed by the ear tip conveyance device and the plant head conveyance device is placed above the plant head clamping and conveying device. It is characterized in that it is provided with a push-in guide section that receives and guides the transfer device to the original delivery device.

In other words, even if the stock head clamping and conveying device is moved sideways and the stock position with respect to the feed chain remains unchanged, when delivering to the feed chain, the stock head transfer and conveyance device is fixedly disposed at the starting end of the feed chain in a fixed posture. The delivery can now be carried out reliably and smoothly.

This also makes it possible to reduce troubles during delivery even when the stock transfer device is largely oscillated horizontally, and as a result, it becomes easy to increase the amount of change in handling depth.

In addition, since the pushing guide section is provided between the ear tip conveying device and the stock head conveying device, the stem culm transported by the ear tip conveying device and the stock head conveying device is reliably delivered to the stock head delivery conveyance device, and This will ensure that the effect is exhibited.

Embodiments of the present invention will be described in detail below based on illustrative drawings.

Fig. 1 is an overall side view of the combine harvester, in which a culm pre-processing section 4 is composed of culm lifting devices 1, 1, a culm raking device, a reaping device 2, and a reaped culm rear conveyance device 3 at the front of the machine. The main frame 5 of this pre-processing section 4 is pivotally attached to the body around a pivot point P, so that the pre-processing section 4 can be moved up and down.

6 is a hydraulic cylinder for driving up and down.

A threshing device 8 is mounted on the traveling body 7, and inside the threshing device 8, a so-called grain sorting device is disposed in a direction substantially parallel to the conveyance direction in which grains are pinched and conveyed by an attached feed chain 9. It is configured as a high-grade threshing device that is side-blown and has husks fed to the top of the handling drum.

Furthermore, a cutter for shredding the waste husks carried out from the threshing section is installed inside the threshing device 8.

The stem culm conveying device of the present invention is characterized in that the cut culm rear conveying device 3
This is applied to the following, and will be explained in detail below.

A tip retaining and conveying device 12 configured by winding an endless body 11 around a wheel, in which claws 10 for conveying culms are arranged at appropriate intervals.
is fixedly disposed along the reaped husk rear conveyance path A, and a pinch rail 14 elastically biased to the chain 13 with protrusions is disposed in close proximity to constitute a plant clamping and conveying device 15.

The stock clamping and conveying device 15 is configured such that the rear conveyance section can be swung laterally in the left-right direction of the machine around the vertical axis X, which is the rotation axis of the wheel at the start end of conveyance. A change adjustment device is configured.

This handling depth change adjustment'jc? Driving for this purpose is performed by an appropriate drive mechanism.

Reference numeral 16 denotes a stock transfer conveyance device located near the starting end of the feed chain 9 of the threshing device, near the end of the cut culm rear conveyance path A, and directly above the stock transfer device 15. The plant head delivery and conveyance device 16, in which an endless body with projections is wound around three wheels, is arranged along the rear conveyance path of the cut husk.

17 is a guide cover, and the cut husk rear conveyance path A
This guide cover 17 is made of a thin sheet metal and is bent into an L shape, and this bent portion constitutes a stem culm pushing guide portion 17b.

Further, the bent vertical surface 17a is substantially along the ear tip locking conveyance path,
A receiver 18 is attached to this bent vertical surface 17a for slidingly guiding the bottom surface of the tip of the conveying locking claw 10, and the locking claw 10 is
is configured to be movable along a fixed trajectory along the receiver 18.

Then, the pushing guiding portion 17b bends the culm transported by the tip conveying device 12 and the stock conveying device 15 into a dogleg shape, receives the stock, and pushes it into the conveying device 16. It is structured as follows.

Further, on the guide cover 17, a lever 19 is elastically brought into contact with the stock head delivery and conveyance device 16 by a spring 20.

From this clamping rod 19, a stock head receiving guide 21 extends forward from the start end of the stock head delivery and conveyance device 16, and at the conveyance start end of the cut culm rear conveyance path, the ear tip conveyance device 12 The middle portion of the cut culm transported by the stock culm and the stock transfer device 15 is scooped up by the plant receiving guide 21, and the cut culm is transferred between the guide tool 21 and the stock transfer device 16.
The structure is such that the reaped husk culm is delivered to the starting end of the feed chain 9 by being guided between the feed chain 9 and the feed chain 9 to ensure clamping and conveyance.

The problem with this configuration is that when the stock head conveying device 15 is laterally swung around the vertical axis The middle part of the cut husk culm is held down by the guiding part 17b, and the lower side of the conveyance is gradually bent into a substantially dogleg shape, and is extended from the starting end of the stock transfer conveyance device 16 to the upper side of conveyance. The grains are pushed between the guide tool 21 and the stock transfer conveyor 16, are held between them, and are delivered to the feed chain 9 of the threshing device 8.

Note that the pushing guide portion 1γb is connected to the stem culm rear conveyance path A.
Although it is provided over almost the entire length of the stock transfer conveyance device 1
It may be formed immediately before 6.

In addition to being formed on the guide cover 17, the push-in guide portion 17b may be formed only from a bar material.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the stem culm conveying device for a combine harvester according to the present invention, and FIG. 1 is an overall side view of the combine harvester, and FIG.
The figure is a view from arrow B of the main part in Fig. 1, Fig. 3 is a side view of the main part, and Fig. 4 is a side view of the main part.
The figure is a rear view of the main parts showing the action. 8...Thresting device, 9...Feed chain, 12...Ear end locking and conveying device, 15...
... Stock head holding and conveying device, 16 ... Stock head delivery and conveying device, 17b ... Pushing guide section.

Claims (1)

[Claims] 1 Spike tip locking conveyance device 1 arranged along the stem culm conveyance path
In contrast to 2, the stock clamping and conveying devices 15, which are arranged at appropriate vertical intervals, are configured to be able to swing laterally around the starting end of the conveyance,
Near the starting end of the feed chain 9 attached to the threshing device 8 and near the terminal end of the stem culm conveyance path, there is a stock end delivery and conveyance device 16 that delivers and conveys the stock end side of the transported stalk culm to the feed chain starting end. is positioned above the stock head holding and conveying device 15 and arranged in a constant posture, and the intermediate portion of the stem culm transported by the tip conveying device 12 and the stock head conveying device 15 is transferred to the stock head transfer and conveying device 16. A stem culm conveying device for a combine harvester, characterized in that it is provided with a pushing guide section 17b for receiving and guiding the stems.