JPH0534503Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention includes a raking device for raking the planted grain culm, a reaping device for reaping the raked grain culm, and a raking device for reaping the raked grain culm, and a raking device for reaping the raked grain culm, and a raking device for reaping the raked grain culm. A pre-processing head section equipped with a merging device for feeding and merging, and a feed case equipped with a rear conveyance device for transporting the harvested grain culm inherited from the merging device toward the threshing device are connected in a state where they are adjacent to each other in the front and rear. This article relates to the structure of the pretreatment section of a whole-culm input type combine harvester.

[Conventional technology]

In a full-culm loading type combine harvester with the above configuration, if one of the left and right running devices falls into the furrow during wheat cutting, the machine body will tilt to the left or right, and the attitude of the reaping device will change to the wheat planting surface. However, the mowing device may be in an inclined position, which causes problems such as the cutting height not being constant in the left-right direction or the mowing device sinking into the ground.

Therefore, even if the machine body is tilted due to the sinking of one of the traveling devices as described above, at least the reaping device can be maintained in a state along the planting surface, and the pretreatment head section is placed against the feed case (machine body). In this case, for example, in order to provide a rolling fulcrum shaft for the feed case of the pre-processing head section, a shaft that passes through the centers of the outlet of the pre-processing head section and the inlet of the feed case in the longitudinal direction of the machine body is considered. It is common to set the rolling fulcrum axis at the center position.

[Problem that the invention attempts to solve]

However, in this case, the rolling fulcrum shaft is located within the grain culm conveyance path, which is not preferable. Therefore, with the rolling fulcrum set at the axis, the outlet of the pretreatment head and the inlet of the feed case are connected to each other for rolling operation by providing a relatively rotatable fitting part on the outside of each opening. However, in this case, the fitting portion structure becomes large, and an increase in the size of the structure cannot be avoided.

The purpose of the present invention is to provide a system that can smoothly transfer grain from the pretreatment head outlet to the feed case inlet while achieving a compact structure.

[Means for solving problems]

The characteristic configuration of the present invention is that the preprocessing head section is configured to be able to roll left and right with respect to the feed case, and a rolling control means is provided to maintain the preprocessing head section in a predetermined posture with respect to the absolute horizontal reference line or the ground. , the rectangular outlet of the pre-processing head section is located along the longitudinal direction of the machine, directly below the opening of the rectangular outlet and approximately at the center in the width direction, with respect to the rectangular inlet of the feed case connected oppositely to the rectangular outlet. It is configured to perform a rolling operation around a connecting fulcrum, and its effects are as follows.

[Effect]

In other words, we adopted a rectangular cross-section that allows for a larger bottom area than a circular cross-section for the conveyed grain culm, which tends to be biased toward the bottom side. In the case where the rolling structure is simplified by connecting with the connecting fulcrum as a rolling fulcrum axis, and the connecting fulcrum is set above the opening by setting it at the center in the width direction directly below the opening. Compared to this, the area of displacement near the bottoms of both openings due to the rolling action can be made smaller.

[Effect of idea]

As a result, the rolling support structure can be as simple as providing a fulcrum, and by rationally selecting the fulcrum position according to the transportation of the grain culm, it is possible to eliminate obstacles in the transportation of the grain culm (positions of both openings). (drip) can be suppressed to the necessary minimum.

〔Example〕

As shown in Fig. 6, a reel-type raking device 1 for raking the planted grain culms, a reaping device 2 for reaping the raked grain culms, a belt-type conveying device 3 for conveying the harvested grain culms backward, and a conveyor. A pre-processing head section 5 is equipped with an auger-type merging device 4 that cross-feeds the harvested grain culms to the middle of the cutting width and merges them, and a pre-processing head section 5 that directs the harvested grain culms inherited from the merging device 4 toward a machine-side threshing device 6. A reaping pre-processing section 9 consisting of a feed case 8 in which a rotary endless belt-type rear conveyance device 7 for conveyance is installed supplies a second hydraulic pressure as a second drive device to the traveling machine body 10 via the base end of the feed case 8. It is mounted so that it can be driven vertically by a cylinder 11, and constitutes a full culm input type combine harvester.

The corresponding outlet 5A of the merging device 4 is located at a position eccentric from the width center of the preprocessing head section 5 in plan view, and correspondingly, the merging device 4 collects the harvested grain culm at a position corresponding to the outlet 5A. ,
It has a screw-like feed dog 4A that is inclined in left and right opposite directions. At the rear conveyance position 7, which receives the conveyed grain culms from the merging device 4, a pair of left and right chains 14A, 14B are stretched between a pair of front and rear transmission shafts 12, 13, and conveyance is carried out along the width direction of these chains 14A, 14B. A plurality of claws 15 are provided to feed the grain culm to the threshing device 6.

Next, rolling drive control of the preprocessing head section 5 will be explained.

As shown in FIGS. 1 and 1, a flange frame 17 having an angled cross section is fixed to the lower surface of the preprocessing head 5, and the flange frame 17 is fixed to the flange frame 17 in the width direction at the opening of the preprocessing head 5. A rolling fulcrum shaft 18 as a connecting fulcrum is fixed at the center position. On the other hand, a reinforcing frame 19 having a channel-like cross section is fixed to the lower surface of the inlet 8A of the feed case 8 facing the opening of the pre-processing head 5, and a reinforcing frame 19 is provided within the reinforcing frame 19 so as to be able to swing relative to the rolling fulcrum shaft 18. A fulcrum boss 20 that is fitted externally is attached. Therefore, the fulcrum boss 20 is connected to the rolling fulcrum shaft 18.
The rectangular outlet 5 of the pretreatment head 5 is fitted over the pretreatment head 5.
A and the rectangular inlet 8A of the feed case 8 are disposed in close opposition to each other, and the pretreatment head 5 can be rolled around the rolling fulcrum axis relative to the feed case 8.The reinforcing frame 19 is equipped with a second hydraulic cylinder. The end of the piston rod 11 is fixed, and this reinforcing frame 19 is attached to the second hydraulic cylinder 1.
1 mounting bracket.

On the other hand, a first hydraulic cylinder 21 serves as a first driving device for rollingly driving the pretreatment head section 5.
In this mounting structure, a bracket 22 provided with a mounting fitting 22A for mounting and supporting a piston rod 21A of the first hydraulic cylinder 21 extends from the upper surface of the pretreatment head section 5, and a base end for supporting the base end of the cylinder case 21B. A bracket 23 is erected from the reinforcing frame 19 as a mounting bracket for the second hydraulic cylinder 11, and is installed at a position corresponding to the lateral center of gravity of the pretreatment head section 5. A gravity-type tilt sensor 26 that uses the movement of a weight is attached to the top surface of the feed case 8, and the detection result of the tilt sensor 26 is taken out by a detection mechanism such as a potentiometer. 32, the hydraulic valve 28 is controlled via the control device 27 as a rolling control means, and the second hydraulic cylinder 21 is driven and controlled by the hydraulic valve 28, so that the horizontal reference line (or The pretreatment head section 5 is maintained in a predetermined posture with respect to the ground.

As shown in FIG. 5, the second hydraulic cylinder 1
1 is provided with a manual control valve 29, and the control valve 29 is switched according to the visual judgment of the driver to vertically swing the reaping pre-processing section 9 to perform reaping pre-processing for pitching operation of the traveling machine body 10. The attitude of the section 9 relative to the ground is maintained as constant as possible.

In addition, 24 in Fig. 1 is the inlet 8 on the feed case 8 side.
It is a resin plate attached to the A side and has a sliding function to smoothly perform the rolling operation of the pretreatment head section 5. Further, numeral 30 is a guide for guiding the rolling operation of the pretreatment head section 5, and extends from the pretreatment head section 5. And 34 in the figure
is a long hole provided in the inlet flange of the feed case 8, and is designed to allow rolling action of the preprocessing head 5 relative to the feed case 8 even when the mounting bolt 33 from the preprocessing head 5 is inserted. It is configured. Furthermore, 25 in the figure
is a guide mechanism provided on the inner bottom surface of the opening of the outlet 5A of the pre-processing head section 5, which allows the opening to be opened by rolling action between the rectangular outlet 5A of the pre-processing head section 5 and the rectangular inlet 8A of the same feed case 8. It has an auxiliary function that compensates for misalignment and feeds grain culms smoothly.

[Another example]

○B The above-mentioned tilt detection sensor 26 may be one that uses a weight and a potentiometer, or one that uses a float in a U-shaped tube and detects the vertical movement of this float, or one that uses gravity. If so, its form does not matter.

○B The first drive device 21 that controls the rolling operation of the pre-treatment head section 5 and the second drive device 11 that controls the lifting and lowering of the reaping pre-treatment section 9 may use an electric motor and a drive screw mechanism. ,
Not limited to hydraulic cylinders.

○C Reinforcement frame 1 as the mounting bracket
9 is not limited to a channel shape, there are no restrictions on its shape, and if it is provided in the fold case 8, there are no restrictions on its position.

[Brief explanation of the drawing]

The drawings show an embodiment of the structure of the pre-processing section of the full-culm input type combine harvester according to the present invention, FIG. 1 is an exploded side view showing the connection structure between the pre-processing head section and the feed case, and FIG. 2 shows the pre-processing head section. FIG. 3 is a side view showing the mounting state of the rolling control cylinder, FIG. 4 is a cross-sectional plan view showing the connection structure between the preprocessing head and the feed case, and FIG. The figure is an overall configuration diagram showing the hydraulic pressure/control circuit, and FIG. 6 is a side view showing the preprocessing section. DESCRIPTION OF SYMBOLS 1... Raking device, 2... Reaping device, 4... Merging device, 5... Pretreatment head section, 6... Threshing device, 7... Rear conveyance device, 8... Feed case, 5A... Rectangular outlet , 8A...Rectangular entrance, 18
...Connection fulcrum.

Claims (1)

[Scope of utility model registration request] A pretreatment head section 5 equipped with a raking device 1 for raking planted grain culms, a reaping device 2 for reaping the raked grain culms, and a merging device 4 for laterally feeding and merging the harvested grain culms in the middle part of the cutting width. , a pre-processing section of a full culm input type combine harvester, in which a feed case 8 equipped with a rear conveyance device 7 for conveying the harvested grain culm inherited from the merging device 4 toward a threshing device 6 is connected in a front and rear adjacent state. The structure is such that the preprocessing head section 5 can be freely rolled to the left and right with respect to the feed case 8, and is provided with a rolling control means for maintaining the preprocessing head section 5 in a predetermined posture with respect to the absolute horizontal reference line or the ground. , and the rectangular outlet 5A of the pre-processing head section 5 is positioned directly below the opening of the rectangular outlet 5A and approximately at the center in the width direction with respect to the rectangular inlet 8A of the feed case 8 connected oppositely to the rectangular outlet 5A. Connection fulcrum 1 along the longitudinal direction of the aircraft located
The structure of the pre-processing section of a full-culm input type combine harvester configured to perform rolling operation centered on point 8.