JP2854498B2 - Grain stalk transport structure for multi-row combine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a multiple of at the cutting width direction箇
Row of cereal stems located in
Separately, a plurality of transport devices for transporting to the rear side are arranged, and a vertical transport device that receives the transported grain culm joined at the transport end of each transport device and transfers it to the feed chain in the threshing device and transports the same. The present invention relates to a grain stalk transport structure for a multi-row combine.

[0002]

2. Description of the Related Art In a conventional multi-row combine,
At the cutting section at the front end of the fuselage, the planted grain culm is cut, the cut culms of each row are combined, transported to the starting end of the feed chain in the threshing device by a vertical transport device, and the root of the harvested grain culm is collected. It is configured to handle while holding and transporting the side, and for the change in the culm length of the planted grain culm, the clamping location by the vertical transport device in the culm length direction based on the detection result of the culm length detection sensor A configuration is employed in which the control of the handling depth to be changed is performed (for example, see Japanese Patent Application Laid-Open No. 4-365420), and the conveyer devices in each section are operated at the same driving speed.

[0003]

However, in this type of combine, the feed chain in the threshing apparatus is generally arranged on one side of the body, so that the grain culm transport path is oblique in plan view. As a result, the conveying path length of each strip must be different, and at the same time, the timing of the confluence of the harvested grain stems may be shifted back and forth. Then, for example, in a mowing operation at the edge of the ridge, the mowing operation is performed while raising the mowing portion in order to avoid the divider at the front end of the machine coming into contact with the ridge. If the culm length of the corn stalk suddenly changes, the culm length of the transport cereal stalk changes alternately, and the handling depth adjustment is frequently performed within a short time. There is also a disadvantage that the culm and the grain culm are alternately conveyed and unhandled portions are likely to occur. An object of the present invention is to solve the above-mentioned disadvantages, and to convey a cut grain culm in a state in which the culm length is substantially uniform, so that a handling process in a threshing apparatus can be rationally performed.

[0004]

According to a feature of the present invention, in the grain culm conveying structure of the multi-row cutting combine described at the beginning, the cut cereal culms joined by the respective conveying devices are arranged at substantially the same cutting timing. The point is that the lengths and drive speeds of the respective transport paths of the respective transport devices are set so that the harvested grain stems are merged together.

[0005]

[Function] The length of each transport path and the drive speed of each transport device are set so that the harvested culm in each strip is merged together at almost the same timing, so that, for example, ridges Even if a high mowing operation is carried out, the transported grain culm supplied to the threshing device will be supplied with the same culm length, and the handling depth adjustment work and extremely short It becomes easy to take measures such as handling treatment for the culm.

[0006]

As described above, in response to a change in the cutting work situation,
When taking measures to control the threshing equipment in an appropriate state and handling the ultrashort culm, unnecessary operations such as frequent adjustments are avoided, and the threshing capacity is reduced. In addition, a multi-row cutting combine that can maintain an appropriate handling state can be provided.

[0007]

Embodiments will be described below with reference to the drawings. FIG.
Shows the front of the self-contained combine. In this combine, a threshing device 3 is mounted on a body frame 2 having a pair of right and left crawler traveling devices 1 and a cutting pre-processing unit 4 is connected to a front part of the machine so as to be able to move up and down. The boarding operation unit 5 is provided on the side. The pre-cutting processing unit 4 includes a weeding tool 6 for sorting and weeding the grain culm to be cut, a raising device 7 for raising the lodging grain culm in an upright position, and cutting the root of the raised plurality of grain culms. The harvesting device 8, a plurality of auxiliary transport devices 9a, 9b, 9c for gathering the harvested grain culm of each row to the center side in the cutting width direction, and gradually changing the posture of the collected grain culm in the standing posture to the sideways posture. And a vertical transport device 11 for transporting the rearward threshing device 3 toward the start end of the pinching transport device 10 in the rear threshing device 3.
The whole is supported on the body frame 2 so as to be able to move up and down around the horizontal axis P. FIG. 2 shows the nipping and conveying apparatus 10 for threshing operation.
As shown in FIG. 1, the feed chain 12 which is driven to rotate endlessly, and the holding rail 1 which is provided so as to be opposed thereto.
The holding rail 13 is formed by pivotally connecting a plurality of divided bodies 13a having a U-shaped cross section, and a guide rod 15 that penetrates and supports each pivoted joint at a fixed base 14 to regulate the position. Each of the divided bodies 13a is configured to be able to bend and transport the culm in a bendable manner by being pressed and urged downward by a coil spring 16 which is externally fitted on the stalk.

Each of the auxiliary transfer devices 9a, 9b, 9c is
The length of each transport path and the drive speed are set so that the grain culms that have been harvested at substantially the same harvest timing are merged together at the transport end point of each of the auxiliary transport devices 9a, 9b, and 9c. . In other words, as shown in FIG. 3, the grain stalks in the uncut side and the middle row are the belts 17a, 1 with locking projections.
The auxiliary transporting devices 9a and 9b, which are composed of the rotary members 7b and the squeezing rotary members 18a and 18b, are gathered to the center side thereof. It is configured to be conveyed by the auxiliary conveyance device 9c including the conveyance device 19 to the gathering point. Therefore, the auxiliary transport devices 9a and 9b in the uncut and intermediate strips are set to have substantially the same transport path length and substantially the same drive speed, and the auxiliary transport device 9c for the already-cut side of the strip has a long transport path. Therefore, for example, by changing the number of gear teeth or the winding diameter of the belt to set the driving speed higher than the former two, the grain culms of each strip cut at almost the same cutting timing are aligned. It is configured to be joined.

The vertical transport device 11 comprises a tip-side locking transport device 11a and a stock-side nip transport device 11b, and is relatively vertically swingable around the horizontal axis by an electric motor 20 with a speed reduction mechanism. When configured, each of the auxiliary transfer devices 9
The holding position of the grain culm conveyed from a, 9b, 9c is changed in the culm length direction so that the depth (handing depth) of the threshing device 3 entering the handling chamber 3a is always controlled appropriately. It is composed. That is, a pair of upper and lower cereal culm detection sensors 21 and 22 for detecting the culm length of the transport cereal culm are provided in the cereal culm transport route, the short culm side detection sensor 21 always detects the cereal culm, and the long culm side detection sensor 22 is provided. A control device 23 having a microcomputer controls the electric motor 20 so as to be in a non-detection state, and raises and lowers the vertical transport device 11 so that the tip of the grain stem is located between the sensors 21 and 22. It is dynamic control.

The threshing device 3 is a device for holding and transporting the harvested culm.
0, the spike side is handled by a handle drum 3b that is driven and rotated in a handling chamber 3a while holding the stock side, and threshing work is performed. Further, a threshing operation state switching means A is provided, which can be switched between a state in which the cereals are clamped and conveyed by the feed chain 12 and a state in which all the culms are put into the handling room, in which the conveying culms are introduced into the handling room. If the short culm side detection sensor 21 detects the absence of a grain culm despite being operated to the side, the length of the transported grain culm can be handled by an extremely short culm which cannot be handled by adjusting the depth. When it is determined that there is, the threshing work state switching means A is provided with a switching control means for automatically switching from a state in which the grain culm is held and transported by the feed chain 12 to a state in which all culms are put in. The short culm side detection sensor 21 constitutes a culm length detecting means B. More specifically, one of the plurality of guide rods 15 that support the holding rail 13 is provided so as to be capable of ascending and driving by an electric motor 25 via a link mechanism 24, and the holding operation position is located on the lower side and the guide operation position is located on the upper side. It is configured so that it can be switched to the position where it retracts to release the grain stem holding state. Therefore, by switching the guide rod 15 to the holding release position,
The grain stalks being conveyed in the relevant location are released from being nipped and transported by the feed chain 12 and the nipping rail 13, and the whole is drawn into the handling room. That is, the electric motor 25 for pinching release constitutes the threshing work state switching means A. The driving device controls the electric motor 25 for pinching release by the control device 23.
3 is a short culm side detection sensor 2 despite the fact that the electric motor 20 for adjusting the handling depth is driven to the deepest handling side.
When 1 detects the absence of a grain culm, the pinch release electric motor 25 is driven after a predetermined transport required time has elapsed, and the guide rod 15 is switched from the pinch action position to the pinch release position. It is. That is, the control device 23
Constitute the switching control means. As a result, for example, when the mowing work is performed in the vicinity of the ridge, when the mowing work is performed while detouring upward so that the weeding implement 6 does not contact the ridge, the cutting height is increased and the length of the cut culm is short. However, in such a case, the short culm side detection sensor 21 detects the absence of the cereal culm, so that it is possible to prevent the above-mentioned all culm input state and the occurrence of unhandled residue. .

[0011] The pinching release point is located in the feed chain 1
2 may be set in the latter half of the nipping transport path. By doing so, the handling process in the handling room 3a is almost performed at the front end of the transport path, and the handling process load is reduced in the latter half, so that the threshing work load becomes excessive with the introduction of all culms. Can be suppressed.

In place of the structure for automatically switching and controlling the threshing work state switching means A as described above, the electric motor 20 for adjusting the handling depth is driven to the deepest handling side. When the short culm side detection sensor 21 detects the absence of grain culm, the control device activates an alarm buzzer to call attention to the aircraft operator, and the pilot is connected to the control device. The manual thrust switch may be switched to switch the threshing work state switching means A.

As the culm length detecting means B for detecting whether or not the insertion length of the harvested grain culm in the handling room is equal to or less than a set value, the culm length detecting means B is replaced with the one using the handling depth adjusting sensor as described above. As shown in FIG. 4, a dedicated culm length detection sensor 26 for detecting that the culm length is equal to or less than a set length may be provided on the front wall on the handle 3c side of the threshing device 3.

The threshing operation state switching means A may be configured as follows. As shown in FIGS. 6 and 7, at the transfer point from the vertical transfer device 11 to the feed chain 12, the grain culm being transferred is forcibly pulled out, and all the culms are scraped and transferred to the handling port 3 c of the threshing device 3. Crank type scraping device 2
7 with the electromagnetic clutch 28 interposed in the transmission system for the crank type scraping device 27, and the electric motor 20 for adjusting the working depth is driven to the deepest handling side. When the detection sensor 21 detects the absence of the cereal culm, the controller 23 controls the electromagnetic clutch 28 to switch from the off state to the on state after a predetermined required time for conveyance. The culm may be introduced so that no unhandled residue occurs. In this case, the threshing operation state switching means A is constituted by the crank type scraping device 27 and the electromagnetic clutch 28. As shown in FIG. 5, a disk cutter 2 for cutting the transported grain stalk is provided at a location near the handling room side of the feed chain 12.
9 is provided so as to be movable up and down by a slide mechanism 30, and when the extremely short culm as described above is detected,
The slide mechanism 30 may be configured to control the slide mechanism 30 to switch to a cutting position where the grain culm is cut from the position where 9 is retracted downward and almost all culms are put into the handling room. Disk cutter 2
9 and the slide mechanism 30 constitute threshing work state switching means A.

In the claims, reference numerals are provided to facilitate comparison with the drawings, but the present invention is not limited to the configuration shown in the accompanying drawings.

[Brief description of the drawings]

FIG. 1 is a side view of a front portion of a self-contained combine.

FIG. 2 is a side view showing a threshing work state switching means.

FIG. 3 is a plan view of a pre-cutting unit.

FIG. 4 is a plan view of an attachment portion of a culm length detection sensor.

FIG. 5 is a cutaway front view of a disk cutter disposition portion.

FIG. 6 is a side view of a crank type scraping device.

FIG. 7 is a front view of a crank type scraping device.

[Description of Signs] 3 Threshing device 9a, 9b, 9c Transport device 11 Vertical transport device 12 Feed chain

Claims (1)

(57) [Claims] 1. Rows located at a plurality of positions in the cutting width direction
Conveyed to the rear side separately for each cut row
A plurality of conveying devices for (9a), (9b), distribution and (9c)
And location, each conveying device (9a), (9b), the (9c)
A grain culm conveying structure for a multi-row cutting combine, comprising a vertical conveying device (11) for receiving the conveyed culm joined at the conveying end and transferring the culm to a feed chain (12) in a threshing device (3). Each of the transfer devices (9
a), (9b), (9c), each of the transfer devices (9a),
(9b) The grain stalk transport structure of the multi-row combine, in which the transport path lengths and drive speeds of (9c) are set.