JPH06303838A - Head-feeding type combine harvester - Google Patents

Abstract

(57) [Summary] [Purpose] In a self-draining combine, even if the harvested culm is short, it will not be left unhandled. [Structure] In a self-removing combine provided with a pinching and conveying device 10 that nips and conveys the plant side of a cut grain culm and allows the tip side to pass through a handling chamber, from the pinching point by the pinching and conveying device 10 to the tip side. Granulation state detecting means B for detecting from the image information that the granulation part of the transport grain culm does not exist within the set area up to the set distance toward In this case, instead of sandwiching and transporting the grain culms by the sandwiching and conveying device 10, the whole grain culm is put into the handling chamber 3a, and is switched to the whole culm feeding state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-removing combine having a pinching / conveying device for nipping the root side of a cut grain culm and conveying it while allowing the tip side to pass through the handling chamber.

[0002]

2. Description of the Related Art In a conventional self-removing combine, a planting grain culm is mowed by a mowing section at the front end of the machine body, and the mowed grain culm is arranged by a vertical conveying device to face the feed chain in the threshing device. It is configured so that the planting side of the harvested grain culm is clamped and transported by a sandwiching and conveying device consisting of a sandwiching rail, and the culm length detection sensor detects if the culm length of the planted grain culm changes. Based on the result, a configuration has been adopted in which the handling depth adjustment control is performed to change the sandwiched portion by the vertical transport device in the culm length direction (for example,
See JP-A-4-365420].

[0003]

However, in the above-mentioned conventional configuration, when the culm length of the transported grain culm is extremely short, even if the vertical transport device is controlled to move to the deepest handling side, it is pinched by the feed chain. Since the distance from the grain to the grain-grained portion of the grain is short, the grain-grained grain portion may pass through a region that cannot be subjected to the handling action by the handling barrel rotating in the handling room. In particular, in the reaping work at the edge of the ridge, when performing the reaping work while raising the reaper in order to prevent the divider at the front end of the machine body from coming into contact with the ridge, the so-called reaping work causes As a result of shortening, the above-mentioned problems occur, and there is an adverse effect that unhandled parts occur. The present invention aims to eliminate the above-mentioned problems.

[0004]

According to a characteristic configuration of the present invention, in the self-removing combine described at the beginning, the transfer is carried out within a set area from a holding position by the holding and transferring device to a setting distance toward the tip side. When the granulation state detecting means for detecting the absence of the granules of the grain culm and the granulation state detecting means reach the detection state, the grain culm is replaced by the sandwiching and conveying device by the sandwiching and conveying device. Is provided with a threshing operation state switching means for switching to the all culm feeding state in which the entire amount of the above is put into the handling chamber.

[0005]

When the granulation state detecting means reaches the detection state, that is, within a set region (a region where the handling cylinder does not perform the handling process) from the holding position of the holding and conveying device to the set distance toward the tip side. If there is no grain part of the transported grain culm in the container, the grain transporter should not only be used for grain removal but also for the stem culm from the normal working condition in which threshing is performed while sandwiching and transporting the grain culm by the sandwich transport device. Since all the culms are put into the handling room automatically, the grain culms are not discharged without handling the graining part, and it is possible to reliably avoid the untreated culms. it can.

[0006]

Therefore, it is possible to provide a self-removing combine capable of reliably avoiding the adverse effect that the grain adhering grain portion passes through an area in which the handling process cannot be performed in the handling room and the untreated portion remains. I arrived.

[0007]

Embodiments will be described below with reference to the drawings. Figure 1
Shows the front of the self-removing combine. In this combine, a threshing device 3 is mounted on a machine body frame 2 having a pair of right and left crawler traveling devices 1, and a mowing pretreatment unit 4 is movably connected to a front part of the machine body so that the right of the mowing pretreatment unit 4 can be obtained. The boarding operation unit 5 is provided on the side. The pre-reaping processing unit 4 is a weeding tool 6 for allocating and dividing the culm to be reaped, a raising device 7 for raising the fallen culm in an upright posture, and a reaping device 8 for cutting the root of the raised culm. , A plurality of auxiliary transporting devices 9a, 9b, 9c for collecting the harvested grain culms of each line to the center side in the width direction, rearward while gradually changing the posture of the gathered grain culms in the standing posture to the sideways posture. Threshing device 3
The vertical conveyance device 11 for conveying toward the start end of the sandwiching conveyance device 10 in FIG. 1 is provided, and the whole pre-mowing processing unit 4 is supported on the machine body frame 2 so as to be vertically movable around the horizontal axis P. As shown in FIG. 2, the pinching and conveying device 10 for threshing work is an endless feed chain 12 that is rotationally driven.
And a sandwiching rail 13 arranged in a state of being opposed to the sandwiching rail 13. The sandwiching rail 13 is configured by pivotally connecting a plurality of divided bodies 13a having a U-shaped cross section, and each pivotally supporting connection point is fixed by a fixing base. A coil spring 16 externally fitted to a guide rod 15 that is penetratingly supported by 14 and is positionally regulated is biased downward so that each divided body 13a can bend and hold the grain culms and convey them.

Each of the auxiliary transfer devices 9a, 9b, 9c is
Each transport path length and driving speed are set so that the grain culms of each row cut at substantially the same cutting timing are joined together. That is, as shown in FIG. 3, the grain culms in the strips on the uncut side and the strips in the middle are the belts 17 with the locking projections.
a, 17b and scraping rotators 18a, 18b are gathered together on the center side by auxiliary transporting devices 9a, 9b, and the strips on the trimmed side are belts 17c with locking projections, scraping rotators 18c. The auxiliary transporting device 9c configured by the sandwiching and transporting device 19 is configured to be merged and transported to the gathering position. Therefore, the auxiliary transfer devices 9a and 9b in the uncut side strip and the intermediate strip are set to have substantially the same transport path length and substantially the same drive speed, and the auxiliary transport device 9c for the strip on the cut side has a long transport path. Because the driving speed is 2
It is configured so that the grain culms of each row cut at almost the same cutting timing are merged together by setting them faster than the other people.

The vertical transfer device 11 is composed of a tip-side locking transfer device 11a and a stocker-side clamping transfer device 11b, and an electric motor 20 with a speed reduction mechanism allows relative vertical swing operation around the horizontal axis. Each of the auxiliary transport devices 9 is configured.
By changing the sandwiching position of the grain culms that are jointly conveyed from a, 9b, and 9c in the culm length direction, the depth of entry into the handling chamber 3a of the threshing device 3 (handling depth) is always controlled appropriately. Configured. That is, a pair of upper and lower grain culm detection sensors 21 and 22 for detecting the culm length of the transported grain culm are provided in the grain culm transport path, the short culm side detection sensor 21 always detects the grain culm, and the long culm side detection sensor 22 is The control device 23 equipped with a microcomputer drives and controls the electric motor 20 so as to be in the non-detection state, and vertically moves the vertical transfer device 11 so that the tip of the grain stem is located between the sensors 21 and 22. Dynamic control.

The threshing device 3 is a carrying device 1 for sandwiching the cut culm.
When the root side is clamped by 0, the tip side is driven by the handling barrel 3b that is driven to rotate in the handling chamber 3a, and the threshing work is performed. Further, a threshing operation state switching means A capable of switching between a state in which the feed chain 12 holds and conveys the grain culms and a state in which all the culms are fed into the handling chamber is provided, and a sandwiching location by the sandwiching and conveying device is provided. And a settling state detecting means B for detecting that the settling portion of the transport grain culm does not exist in the set area from the tip to the tip side. When the detection state is reached, the threshing work state switching means A
Is configured to be automatically switched from the sandwiched and conveyed state of the grain culms by the feed chain 12 to the all culm throwing state. More specifically, one of the plurality of guide rods 15 for supporting the sandwiching rail 13 is provided so as to be capable of being driven upward by an electric motor 25 via a link mechanism 24, and is provided at a sandwiching action position located on the lower side and an upper side. It is configured so that it can be switched to a position where it is retracted to release the sandwiched state of the grain culms. Therefore, by switching the guide rod 15 to the pinch release position, the grain culm which is being conveyed at the relevant position is fed by the feed chain 1.
The nipping conveyance by the nipping rail 2 and the nipping rail 13 is released, and the whole is drawn into the handling room. That is, the threshing release electric motor 25 constitutes the threshing operation state switching means A. Then, as shown in FIG. 1 and FIG. 4, an image pickup device 31 is installed to determine the graining state of the transported grain culms before being carried into the handling room 3a. For example, as shown in FIG. 5, image processing is performed to determine whether or not the granulated portion of the transport grain culm is present in the set area Q from the sandwiched location by the sandwich transport apparatus 10 to the location reaching the set distance toward the tip side. A control device 23 that makes a judgment based on control or the like is provided, and when it is detected that the grain adhering part of the transport grain culm is present in the area, the control device 23 releases the pinch after a predetermined transport required time elapses. The electric motor 25 for driving is driven to switch the guide rod 15 from the clamping operation position to the clamping release position. In other words, the image pickup device 31 and the control device 23 constitute the particle state detecting means B. As a result, for example, when performing the mowing work on the edge of the ridge, when performing the mowing work while making a detour upward so that the weeding tool 6 does not contact the ridge, the cutting height becomes high and the length of the mowing culm is short. However, in such a case, it is possible to prevent the unhandled residue from being generated due to the all culm throwing state.

The pinch release position is the feed chain 1
It may be set in the latter half of the sandwiching and conveying path by 2. By doing so, the handling process in the handling room 3a is mostly performed at the front end of the transport path, and the handling process load is small in the latter half, so the threshing work load becomes excessive with the introduction of all culms. Can be suppressed.

[Other Embodiments] The graining state detecting means B may be configured as follows. That is, FIG.
As shown in Fig. 7, a plurality of potentiometer-type layer thickness detection sensors S for detecting the layer thickness are arranged along the culm length direction at predetermined small intervals with respect to the conveyed grain culm, and the grains are conveyed based on the respective detection results. It is configured to determine the boundary between the grain-bearing portion and the stem portion of the grain culm, and to detect whether or not the end of the grain-bearing portion thus determined on the root side is within the setting region Q. May be.

The threshing operation state switching means A may be constructed as follows. As shown in FIG. 6 and FIG. 7, at the transfer position for the feed chain 12 from the vertical transfer device 11, the grain culm being delivered is forcibly pulled out and the whole culm is scraped into the handling port 3c of the threshing device 3 and transported. Crank type scraping device 2
7, the electromagnetic clutch 28 is provided in the transmission system for the crank type scraping device 27, and the handling depth adjusting electric motor 20 is driven to the deepest handling side. When the detection sensor 21 detects the absence of grain culm, the control device 23 controls the electromagnetic clutch 28 to switch from the disengaged state to the engaged state after a lapse of a predetermined transportation time. The culm may be thrown in so that the unprocessed residue does not occur. 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. 9, a disc cutter 2 for cutting the transport grain culm is provided at a position near the feed chain 12 on the inner side of the handling chamber.
9 is provided by a slide mechanism 30 so as to be movable up and down, and when the above-mentioned short culm is detected, the disc cutter 2
The slide mechanism 30 may be controlled so that the grain culm is cut from the position where 9 is retracted downward to a cutting position where almost all culms are thrown into the handling chamber. Disk cutter 2
9 and the slide mechanism 30 constitute the threshing operation state switching means A.

It should be noted that reference numerals are added to the claims for facilitating the comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

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

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

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

FIG. 4 is a plan view of a threshing device.

FIG. 5 is a diagram showing detected image information.

FIG. 6 is a side view showing threshing work state switching means of another embodiment

FIG. 7 is a front view showing threshing work state switching means of another embodiment.

FIG. 8 is a diagram showing a graining state detecting means of another embodiment.

FIG. 9 is a front view showing a threshing work state switching means of another embodiment.

[Explanation of symbols]

 3a Handling room 10 Nip transfer device A Threshing operation state switching means B Granulation state detection means

Claims (1)

[Claims] 1. A self-removing combine, comprising a sandwiching and conveying device (10) for sandwiching and conveying the plant side of a cut grain culm and passing the tip side through the inside of the handling chamber (3a). Granulation state detecting means (B) for detecting that the granulation part of the transport grain culm does not exist in the set region from the sandwiching position by the sandwiching and conveying device (10) to the set distance toward the tip side. When the granulation state detecting means (B) reaches the detection state, all the culms are put into the handling chamber (3a) in place of sandwiching and transporting the grain culms by the sandwiching and conveying device (10). Threshing work state switching means (A) for switching to the throwing state
A self-removing combine equipped with.