JPS6326963B2 - - 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. Also, for example,
As shown in Japanese Utility Model Publication No. 15317, the pre-processing device is detachable from its swinging shaft, and as shown in Japanese Utility Model Application Publication No. 53-63424, the reaping section and the traveling section are It is also conceivable to use a binder technique in which the two are connected via a guide member that is expandable and retractable in the front-rear direction. The present invention solves the following problems caused by these conventional techniques.

○B In other words, since the lower part of the pre-processing device is generally located very close to the ground during working conditions, in conventional combine harvesters in which the lower part of the pre-processing device is configured to be able to swing freely around one horizontal axis, once the entire pre-processing device is The preprocessing device can only be changed to a forward-down position around the horizontal axis after the preprocessing device has been significantly raised. Therefore, it is possible to avoid the time and power losses that would result in the preprocessing device being raised significantly. In addition, when the top side of the preprocessing device that has been raised significantly is disconnected from the self-propelled aircraft and the attitude is changed to a forward-lowering state, the front end of the heavy preprocessing device does not crash into the ground. There was also the inconvenience of having to hold it while lowering it, 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.

○B According to the conventional technology in which the pretreatment device is attached and detached using its swinging shaft, a large space for inspection can be obtained by removing the pretreatment device from the self-propelled aircraft, but the pretreatment When attaching the device to a self-propelled aircraft, the user had to support the heavy pre-processing device while aligning it with the aircraft, causing great physical and mental fatigue.

○C In addition, according to the conventional technology that connects the reaping section and the self-propelled machine body through a guide member that is extendable and retractable in the front and back direction, the pre-processing device is raised significantly as in ○B, or as in ○B. It seemed that the problem of alignment with the aircraft could be solved. However, this conventional technology is a binder technology, and the weight of the reaping section is much lighter than that of a combine pre-processing device, so this did not cause any problems.
When applied to a combine harvester, there was a problem in that the weight of the preprocessing device caused twisting in the sliding movement in the front and back direction, requiring a large amount of effort to move the preprocessing device back and forth.

An object of the present invention is to provide a combine harvester that solves the problems of ○I to ○C explained above.

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 when the pre-processing device approaches the self-propelled aircraft, the support The locking means for locking the swinging of the locking mechanism is provided in a manner that the locking mechanism can be released freely, 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. In particular, since the position of the pretreatment device is changed by swinging the column back and forth, there is no need for special positioning when installing it after inspection work, and there is no twisting that tends to occur with sliding guidance. , there is an advantage that the position of the combine pre-processing device can be changed smoothly.

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 pretreatment 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 it fall horizontally by cooperating 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. The processing device frame 11 is connected, and the frame 1 is connected between the frame 11 and the self-propelled aircraft.
A hydraulic cylinder 14 is installed to swing and drive the pretreatment device 1, and by operating the cylinder 14 to extend and retract, the pretreatment device is swung up and down around the swing axis P to adjust the cutting height. be.

The pillar 13 is connected to the body frame 2 so as to be able to swing back and forth, and a bolt 16 is inserted between the pillar 13 and a member 15 fixed to the body frame 12 to lock the rocking of the pillar 13. , a strut locking means is constructed in which the lock is released by removing the bolt 16. That is, by this locking means, the column 13 is fixed and maintained in a position where the preprocessing device is 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 equipment located behind the support 13, the support 13 should be moved forward as shown by the imaginary line in Figure 2. The structure is such that the pre-processing device can be laid down so that the column 13 does not become an obstacle to the work, and the pre-processing device can be moved forward so that a wide working space is secured between the pre-processing device and the threshing device 2.

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 the drawing]

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, 15, 16... Locking means, P... Swing shaft center.

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 approaches the self-propelled aircraft. A combine harvester in which locking means 15 and 16 are provided so as to be unlockable.