JP3281671B2 - Self-contained combine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-contained combine provided with a pinching and conveying device that passes a spike side through a handling room while pinching and transporting the root of a harvested grain culm.

[0002]

2. Description of the Related Art In a conventional self-removing combine, a planted grain culm is cut by a cutting portion at a front end of a machine body, and the cut grain culm is arranged to be opposed to a feed chain in a threshing apparatus by a vertical conveying device. The harvesting culm is clamped and transported by a clamping and conveying device consisting of a clamping rail and is handled and transported. The change in the culm length of the planted grain culm is detected by a culm length detection sensor. A configuration for performing a handling depth adjustment control to change the holding position by the vertical transport device in the culm length direction based on the result has been adopted (for example,
See JP-A-4-365420].

[0003]

However, in the above-described conventional configuration, when the length of the transported grain culm is extremely short, even if the vertical transport device is controlled to move to the deepest handling side, the holding position by the feed chain is not affected. There is a possibility that the distance from the grain to the grain portion of the culm becomes short, and the grain portion of the grain culm may pass through a region that cannot be handled by the handling cylinder rotating in the handling room. In particular, in the mowing work near the ridge, the mowing work is performed while raising the mowing part in order to prevent the divider at the front end of the machine from coming into contact with the ridge. As a result, the above-described problem occurs, and the problem of unhandled portions occurs. An object of the present invention is to eliminate the above disadvantages.

[0004]

A feature of the present invention is that, in the self-removing type combine described at the beginning, a transfer is performed within a set area from a holding position by the holding and transferring device to a position reaching a set distance toward a tip side. A granulated state detecting means for detecting the presence of a granulated portion of the cereal stem, and, when the granulated state detecting means reaches the detection state, the cereal culm is replaced by the nip of the cereal culm by the clamping and conveying device. Threshing operation state switching means for switching to the whole culm input state in which the entire amount of the culm is put into the handling room.

[0005]

When the granulation state detecting means reaches the detection state, that is, in the set area (the area where the handling process is not performed by the handling cylinder) from the location where the nipping and transporting device is nipped to the set distance toward the tip side. When there is a grained part of the transported grain culm, the pinching and transporting device adjusts not only the grained part but also the stem culm part of the transported grain culm from the normal work state of threshing while pinching and transporting the grain culm. It is automatically switched to the state where all culms are thrown into the handling room, so that the grain culm is not discharged without the handling process for the granulated part, and it is possible to reliably avoid the occurrence of unhandled portions. it can.

[0006]

Accordingly, it is possible to provide a self-removing type combine which can surely avoid the problem that the grain culm granulation portion passes through an area where handling processing cannot be performed in the handling room and unhandled portions are left. Reached.

[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 cutting pre-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 posture, and a cutting device 8 for cutting the root of the raised grain culm. A plurality of auxiliary conveying devices 9a, 9b, 9c for gathering the harvested grain culm of each strip toward the center in the width direction of the mow, and rearwardly changing the collected grain culm in the standing posture to the sideways posture; Threshing equipment 3
And a vertical transport device 11 for transporting the gripping transport device 10 toward the start end thereof, and the entire pre-cutting unit 4 is supported by the machine frame 2 so as to be able to move up and down around the horizontal axis P. As shown in FIG. 2, the nipping and conveying device 10 for threshing operation includes a feed chain 12 which is driven to rotate endlessly.
And a clamping rail 13 arranged opposite to the clamping rail 13. The clamping rail 13 is formed by pivotally connecting a plurality of divided bodies 13 a having a U-shaped cross section, and each of the pivotal connection points is fixed to a fixed base. A coil spring 16 that is supported by a through-hole 14 and is externally fitted to a guide rod 15 that regulates the position pushes and urges the coil spring 16 downward so that each divided body 13a can bend and convey the culm so that it can bend.

Each of the auxiliary transfer devices 9a, 9b, 9c is
The length of each transport path and the driving speed are set so that the grain culms of each row that have been harvested at substantially the same harvesting timing are merged together. In other words, as shown in FIG.
a, 17b and the scraping rotators 18a, 18b are gathered to the center side by auxiliary transporting devices 9a, 9b, and the strip on the cut side is a belt 17c with a locking projection, the scraping rotator 18c. And an auxiliary transport device 9c composed of a nipping transport device 19 so as to be conveyed to the gathering location. 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. Drive speed before 2
It is set so that the grain stalks of each row harvested at almost the same harvesting timing are merged together.

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. A threshing operation state switching means A is provided which can be switched between a state in which the feed chain 12 clamps and transports the grain culm and a state in which the transported grain culm is thrown into the handling room. And a granulated state detecting means B for detecting that a granulated portion of the transported cereal stem is present in a set area up to a point reaching a set distance toward the ear tip side, wherein the granulated state detecting means B is provided. When the detection state is reached, the threshing work state switching means A
Is automatically switched from the state in which the grain culm is held and transported by the feed chain 12 to the state in which all culms are loaded. More specifically, one of a 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 is provided at a lower working position and at a higher working position. 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 pinch release position, the cereal stalks being conveyed at the relevant position are fed chain 1
2 and the holding conveyance by the holding rail 13 are released, 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. Then, as shown in FIGS. 1 and 4, an image pickup device 31 for judging the set state of the transported grain culm before being carried into the handling room 3 a is installed, and an image taken by the image pickup device 31 is used. For example, as shown in FIG. 5, image processing is performed to determine whether or not a grained portion of a transported grain culm exists in a setting area Q from a location to be set to a tip end side from a location to be held by the nipping and transporting device 10. A control device 23 for making a determination based on control or the like is provided. When the control device 23 detects that the grained portion of the transported cereal culm exists in the area, it releases the pinching after a predetermined transport required time has elapsed. The electric motor 25 is driven to switch the guide rod 15 from the clamping operation position to the clamping release position. That is, the image pickup device 31 and the control device 23 constitute the particle size detection means B. 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, it is possible to prevent the occurrence of the unhandled state due to the state in which all the culms are put in.

[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.

[Another Embodiment] The granulated state detecting means B may be configured as follows. In other words, as shown in FIG. 8, a plurality of potentiometer-type layer thickness detection sensors S for detecting the layer thickness at predetermined small intervals along the culm length direction with respect to the grain culm to be conveyed are arranged, and each of these detections is performed. The boundary between the grained portion and the stem portion of the grain culm to be conveyed is determined from the result, and it is detected whether or not the root end of the grained portion determined in this way is within the set area Q. May be configured.

The threshing operation state switching means A may be configured as follows. As shown in FIGS. 6 and 7, at the delivery point from the vertical transport device 11 to the feed chain 12, the grain culm being delivered is forcibly pulled out, and all the culms are scraped and transported to the handling port 3 c of the threshing device 3. Although a crank type scraping device 27 is provided and an electromagnetic clutch 28 is interposed in a transmission system for the crank type scraping device 27, the electric motor 20 for adjusting the handling depth is driven to the deepest handling side. Instead, when the short culm side 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 predetermined required time for conveyance, A short grain culm may be introduced into all culms so that no untreated 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. 9, a disk cutter 29 for cutting the transported grain culm is provided in the vicinity of the handling room side of the feed chain 12 so as to be vertically movable by a slide mechanism 30, and the extremely short culm as described above is detected. If
The slide mechanism 30 may be configured to control the slide mechanism 30 to switch to a cutting position in which the grain culm is cut from the position where the disk cutter 29 is retracted downward and almost all culms are put into the handling room.
The disc cutter 29 and the slide mechanism 30 constitute threshing work state switching means A.

In the claims, the reference numerals are used to facilitate comparison with the drawings, but the present invention is not limited to the configuration shown in the attached 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 the threshing apparatus.

FIG. 5 is a diagram showing detected image information.

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

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

FIG. 8 is a diagram showing a granulated state detecting means according to another embodiment.

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

[Explanation of symbols]

 3a Handling room 10 Nipping conveyance device A Threshing work state switching means B Granulation state detection means

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A01F 12/10 A01D 61/00 301

Claims (1)

(57) [Claims] 1. A self-contained combine provided with a holding and conveying device (10) for passing a spike side through a handling chamber (3a) while holding and transporting the root side of a harvested grain culm. A graining state detecting means (B) for detecting that a grained portion of the transported grain culm is present in a set area from a location to be held to a tip end side by a nipping point by the nipping and transporting device (10); When the granulated state detection means (B) reaches the detection state, all the culms are thrown into the handling chamber (3a) instead of the nip of the cereals by the nip conveying device (10). Threshing work state switching means (A) for switching to the input state
Self-contained combine equipped with.