JPS6326964B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a front part of a self-propelled machine having a threshing device, which has a reaping device for planted grain culms and a conveying section for supplying the harvested grain culms to the threshing device. The present invention relates to a combine harvester in which processing devices are connected.

In the above-mentioned combine harvester, conventionally, when inspecting or repairing the parts behind the traveling machine stand or the pre-processing device of the threshing machine, the pre-processing device was close to the front of the self-propelled machine, and there was no work space between them. The lack of space made the task extremely difficult. In order to solve this problem, conventionally, as shown in Japanese Patent Publication No. 44-11566, for example, the lower part of the preprocessing device is connected to the self-propelled aircraft so that it can swing up and down about a single horizontal axis. Attempts have been made to swing the preprocessing device forward and downward around the horizontal axis to create an inspection space between the self-propelled aircraft and the preprocessing device.

However, in general, the lower part of the pre-processing device is located very close to the ground during working conditions, so in the combine harvester according to the above-mentioned conventional technology, the horizontal axis can only be adjusted after the entire pre-processing device has been raised significantly. It is not possible to change the posture of the pretreatment device to a forward-down state around the core, and therefore,
It is unavoidable to raise the entire pre-processing device significantly, causing a loss of time and power, and at the same time, the upper part of the pre-processing device that has been raised significantly is disconnected from the self-propelled aircraft, and its attitude is changed to a forward-down position. There was also the inconvenience of having to lower the front end of the heavy pretreatment device while supporting it to prevent it from crashing into the ground, and the risk of doing so. Furthermore, since the purpose is to create an inspection space between the pre-processing device and the self-propelled aircraft by swinging around one horizontal axis, there is a natural restriction on the size of that space, making it difficult to use. It was impossible to obtain a large space.

The present invention improves the connecting structure between the self-propelled aircraft and the pre-processing device, so that the pre-processing device can be raised greatly or changed to a posture that is lowered forward.
To enable a sufficiently large space for maintenance and inspection to appear between a self-propelled aircraft and a preprocessing device, while saving time loss, power loss, and work effort, and to provide a space for maintenance and inspection. The purpose is to enable operations to appear with less effort.

In order to achieve the above object, the present invention is characterized in that the pre-processing device for the self-propelled aircraft is configured to be able to swing vertically around the swing axis on the rear side, so that it can swing freely in the longitudinal direction of the aircraft. A support is provided upright on the self-propelled aircraft, and the swing axis is provided at the swinging free end of the support to support the pre-processing device, and the support is installed at a position close to the self-propelled aircraft. A locking means for locking the swinging of the mowing machine is provided, and a hydraulic cylinder for mowing height adjustment that swings the pre-processing device up and down about the swinging axis is attached to a fixed part of the self-propelled machine body. This structure is provided between the pretreatment device and the pretreatment device, and this structure provides the following effects.

In other words, as in the past, an inspection space is created by swinging the self-propelled aircraft into a bent position around the connection point at the bottom of the preprocessing device and changing the attitude of the entire preprocessing device to a forward-down position. Instead, in the present invention, the position of the vertical swing axis of the preprocessing device relative to the self-propelled aircraft itself can be changed in the longitudinal direction of the aircraft by swinging the support column. Therefore, the posture of the pretreatment device can be changed without incurring loss of time or power, such as raising the swing axis or changing the posture of the entire pretreatment device to a forward-downward posture. This is useful for saving time and avoiding dangers. Furthermore, since there is no need to change the posture of the pretreatment device to a forward-hanging position, the size of the inspection space can be reduced depending on the forward-hanging angle. It is easy to create a structure that allows for a large space for maintenance and inspection without being restricted.

Furthermore, in order to obtain the above-mentioned space for maintenance and inspection, a height of cut is provided between the fixed part of the self-propelled body, which does not change its position even when the position of the swing axis is changed, and the pre-processing device. The preprocessing device can be changed in position in the longitudinal direction of the aircraft by effectively utilizing the hydraulic cylinder and strut for height adjustment, and by operating the hydraulic cylinder that is originally used to raise and lower the preprocessing device. This has the advantage that the space can be quickly obtained without requiring any special driving means, with little effort.

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

As shown in FIG. 1, a threshing device 2 is attached to a self-propelled machine equipped with a crawler traveling device 1, and a lifting device 3 is installed in a backward tilting position to apply a lifting action to the planted grain culm. A pre-processing device including a reaping device 4 for reaping grain culms and a conveying section 6 for supplying the harvested grain culms to the starting end of the threshing feed chain 5 is attached to the front of the self-propelled machine body, and the machine body The combine harvester is configured to reap the planted grain culms and thresh the harvested grain culms as it travels.

The conveyance section 6 is constructed as shown in FIG.

That is, it extends near the rear of the pulling device 3 and above the starting end of the threshing feed chain 5,
A device 7 for locking and conveying the tip side and a device 8 for pinching and conveying the stock side are provided in such a manner that the vertical interval between the two conveyance devices 7 and 8 becomes smaller toward the starting end, and the terminal end of the locking and conveying device 7 is provided. Then, the grain culm is delivered to the threshing feed chain 5 by the locking and conveying device 7.
A pressing rod 9 is provided that acts on the grain tip side in order to make the grain fall sideways in cooperation with the harvesting device 4, so that the grain culm from the reaping device 4 is inherited in an upright position, and at the end of the conveyance, it is changed to a sideways posture. It is arranged to be delivered to threshing feed chain 5.

By swinging and fixing the lever 10 provided on the control section, both the conveyance devices 7 and 8 are integrally swung and fixed around the oscillation axis P constituted by the horizontal shaft on the transport end side. It is configured so that it can be fixed.
Using the lever 10, the starting ends of both the conveying devices 7 and 8 are changed up and down, and the holding position of the stock side conveying device 8 with respect to the inherited grain culm is changed in the direction of the culm,
The handling depth in the threshing device 2 is changed and adjusted.

In order to attach the pretreatment device to the self-propelled aircraft, a second
As shown in the figure, a column 13 is provided at the front end of the self-propelled aircraft frame 12 to serve as a connection between the preprocessing device frame 11 and the self-propelled aircraft. A fluid pressure cylinder 14 that connects the processing device frame 11 and swings the frame 11 is connected to the frame 11 at a position below the support column 13.
and the fuselage frame 12 as the fuselage fixing part, and the fluid pressure cylinder 1
4, the pretreatment device is swung up and down around the oscillation axis P to adjust the cutting height.

The support column 13 is connected to the fuselage frame 12 so as to be swingable back and forth, and
A support locking means is constructed in which a bolt 16 is inserted between the member 15 fixed to the support support 13 and the support support 13 to lock the swinging of the support support 13, and the bolt 16 is removed to release the lock.
That is, by this locking means, the support column 13 is
The preprocessing device is configured to be able to be changed between a state in which the preprocessing device is fixedly maintained at a position close to the threshing device 2 and a state in which the preprocessing device is allowed to move near and far in the longitudinal direction of the machine body with respect to the threshing device 2. , when inspecting or repairing the pre-processing device or the device part located behind the support column 13, as shown by the imaginary line in FIG.
The pillar 13 can be lowered to the front so that the pillar 13 does not become an obstacle to work, and the pre-processing device can be moved forward so that a wide working space is secured between this and the threshing device 2. It is configured.

Then, in a state where the pillar 13 is collapsed forward and the swing axis P position is moved forward, there is no need to drive each device on the preprocessing device. By removing the power transmission belt that is input to the horizontal axis that constitutes the core P, the support column 13 can be freely lowered, and with the support column 13 in the upright, connected and fixed state, it can be used for input again to the horizontal axis. The power may be transmitted to the pretreatment device by any suitable means known in the art, such as by hanging a power transmission belt.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

The drawings show an embodiment of a combine harvester according to the present invention, and FIG. 1 is a side view of the combine, and FIG. 2 is a side view of a preprocessing device mounting structure. 2... Threshing device, 4... Reaping device, 6... Conveying section, 14... Fluid pressure cylinder, 15, 16... Locking means, P... Swing axis.

Claims (1)

[Claims] 1. A combine harvester in which a pretreatment device having a reaping device 4 for planted grain culms and a conveying section 6 for supplying the reaped grain culms to the threshing device 2 is connected to the front part of a self-propelled machine body having a threshing device 2. The pre-processing device is configured to be able to swing up and down about the swing axis P on the rear side of the self-propelled body, and a support 13 that is swingable in the longitudinal direction of the body is erected on the self-propelled body. The swing axis P is provided at the free swinging end of this support 13 to support the preprocessing device, and the swing of the support support 13 is locked at a position where the preprocessing device is close to the self-propelled aircraft. A hydraulic cylinder 14 for mowing height adjustment, which is provided with locking means 15 and 16 so as to be unlockable, and which swings the pretreatment device up and down about the swing axis P.
A combine harvester installed between the fixed part of the self-propelled aircraft and the pre-processing device.