JP2886776B2 - Threshing grain culm supply unit of 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 an improvement of a threshing grain culm supply section of a self-removing combine which is configured to clamp and convey a harvested grain culm by a feed chain and a clamping rail and insert and supply it to a handling room of a threshing apparatus. .

[0002]

2. Description of the Related Art Conventionally, as the above-mentioned threshing grain culm supply unit, a clamping release means for releasing a clamping action of at least a part of a clamping rail is provided, and a dust-proof plate for closing a handling port above the grain culm conveyed is held. Research and development has been made on a structure provided so as to be able to move up and down and to be biased downward. This threshing grain culm supply section is provided with a clamping release means to prevent unhandled depth due to insufficient handling depth when short culm occurs locally by cutting the culm while raising the cutting section at the ridge. The clamping action of at least a part of the clamping rail is released so that the short culm can be fed to the threshing machine with all culms. In order to prevent this, the upper part of the handle is closed by a dust-proof plate that can be raised and lowered and biased downward, and the upper part of the grain culm is closed by the dust-proof plate. The structure was pressed.

[0003]

However, when the short culm is thrown into the threshing section by releasing the clamping action of the clamping rail, the short culm is poorly pulled into the threshing section due to the catching and friction with the dustproof plate. Therefore, there is room for improvement from the viewpoint of improving the reliability of the whole culm input performance of short culms. An object of the present invention is to make it possible to reliably prevent short culms from being thrown into all the culms due to catching or friction with a dustproof plate.

[0004]

SUMMARY OF THE INVENTION A feature of the present invention is to provide a feed chain and a clamping rail for clamping and transporting a grain culm to supply it to a threshing unit, and to release the clamping action of at least a part of the clamping rail. Means, and a dust-proof plate that closes the handle above the grain stalk conveyed by the feed chain and the clamping rail is provided in a vertically movable and downwardly biased combine. Only in the form of forcibly raising the dust-proof plate, there is provided a linking operation means for linking the clamping release means and the dust-proof plate.

[0005]

[Function] In other words, when the clamping action of the clamping rail is released by the clamping release means, the dustproof plate is automatically forcibly raised by the linking operation means, so that the short culm and the dustproof plate can be prevented from being caught and the friction can be reduced. In addition, it is possible to reliably prevent short culms from being pulled into the threshing unit by catching or friction with the dust-proof plate, and to reliably supply all culms of short culms.

[0006]

As a result, irrespective of the volume of threshing grain culm, it is possible to prevent grain and dust from blowing out from the handling mouth, regardless of the volume of the threshing culm. It has become possible to provide a self-removable combine which is more excellent in reliability of the input performance of all culms of short culms which can be reliably prevented.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a cutting section 3 which is swingably moved up and down around a fulcrum 2 by a hydraulic cylinder 11 is connected to a front portion of a traveling vehicle body provided with a crawler type traveling device 9. A threshing device 5 for threshing and sorting the harvested culm conveyed from the section 3 and a boarding operation section 8 are mounted on a traveling vehicle body to constitute a self-removing combine.

The reaping unit 3 includes a raising device 31, a reaping device 32, and a rear transport device 3 which transports the grain stalks harvested in a standing position to the upper rear and supplies the culms to a threshing device 5 in a sideways position.
In addition, a feed chain 4 and a clamping rail 1 are provided on the side of the threshing device 5 for inserting the culm received from the rear conveying device 33 into the handling chamber and clamping and conveying the grain stem rearward.
And the feed chain 4 and the clamping rail 1
A dustproof plate 10 is provided to close the handling port C above the grain stalk conveyed by the nip.

Further, by swinging the rear conveying device 33 up and down around the fulcrum 2, the insertion amount of the grain stalk held and conveyed by the feed chain 4 and the holding rail 1 into the threshing device, that is, the handling depth In addition to a configuration in which the length is changed, a pair of upper and lower contact type culm length sensors 12a and 12b for detecting the position of the tip of the grain culm conveyed rearward are provided, so that the tip between the culm length sensors 12a and 12b is provided. A known handling depth control mechanism that stabilizes the handling depth amount regardless of the change in the culm length by swinging the rear transport device 33 up and down by the electric motor M so that is positioned.

As shown in FIGS. 2 to 4, the holding rail 1 is divided into a number of rail units 1a and 1b in the longitudinal direction, and the rail units 1a and 1b are connected to each other by pins 13 so as to be relatively swingable. Then, rods 15 attached to the holder 14 so as to be able to move up and down are connected to the pins 13 respectively, and springs 16 for urging the rods 15 are attached to the respective rods 15 so that the holding force of the holding rail 1 can be obtained by the springs 16. I have.

The rod 15 for the front part 1a of the rail unit bodies 1a and 1b is linked to a hydraulic or electric drive unit 17 by a link type interlocking device 18, and a sensor 12
a controller 19 for automatically operating the driving unit 17 based on the information from the sensors 12a and 12b, and in a state where the handling depth control mechanism is operated to the limit position on the shortest culm side, and both sensors 12a and 12b When an extremely short culm that does not sense the grain culm is detected, after a set time from the detection time, that is, when the extremely short culm that cannot be controlled in the handling depth reaches the front portion of the clamping rail 1, the driving unit The drive unit 17 is automatically operated by the controller 19 so that the rod 15 is forcibly lifted by 17 and the holding action of a part of the holding rail 1 is released. That is, when an extremely short culm occurs locally by cutting the grain culm while raising the mowing part 3 at the ridge, in order to prevent unhandled depth due to insufficient handling depth in the threshing device 5, a clamping rail is used. 1 is configured so that the clamping action of a part of the culm 1 is released and the entire short culm is drawn into the threshing apparatus 5 by the handling cylinder 6.

The dustproof plate 10 is supported by a rod 21 attached to a holder 20 so as to be able to move up and down, and a spring 22 is provided.
, So as to prevent the blowing of grains and dust from the handling port C regardless of the volume of threshing grain stem. Further, the rod 21 of the dust-proof plate 10 is linked to the drive unit 17 by the contact member 23, and the dust-proof plate 10 is forcibly lifted only when the holding rail 1 is released, so that the short culm and the dust-proof plate 10 are connected. It is configured so as to suppress generation of snagging and friction, prevent short culm from being poorly drawn into the threshing device 5 due to snagging and friction with the dust-proof plate 10, and reliably realize introduction of all culm of short culm. is there.

[Other Embodiments] The mounting configuration of the holding rail 1 and the position and range of releasing the holding action can be appropriately selected. In short, it is sufficient if the holding action of at least a part of the holding rail 1 is released. . The specific configuration for releasing the clamping action of the clamping rail 1 may be such that the biasing force may be eliminated or weakened by, for example, moving the reaction point of the spring 16, and the design may be appropriately changed in an automatic operation type or a manual operation type. Nipping release means 17, 1
8 collectively. The specific configuration in which the dustproof plate 10 is mounted so as to be able to move up and down and to be urged downward can be appropriately changed. The specific structure for linking the dust releasing plates 17 and 18 and the dust-proof plate 10 in a form in which the dust-proof plate 10 is forcibly raised only in the state where the dust releasing plates 17 and 18 are released is a driving operation type or a manual operation type. The design can be changed as appropriate, and these are collectively referred to as linkage operation means 17 and 23.

In the claims, reference numerals are provided for convenience of 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 the front of the combine.

FIG. 2 is a side view showing a main part in a normal holding / conveying state;

FIG. 3 is a side view showing a main part in a transport state in which the holding is released.

FIG. 4 is a vertical sectional front view of the threshing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Holding rail 4 Feed chain 5 Threshing device 10 Dustproof plate 17,18 Holding release means 17,23 Linking operation means

──────────────────────────────────────────────────の Continued on the front page (72) Inventor Kazuka Hirata 64 Ishizukitamachi, Sakai City, Osaka Prefecture Inside Kubota Sakai Works (72) Inventor Shigeki Hayashi 64 64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubota Sakai Co., Ltd. (58) Investigated field (Int.Cl. ⁶ , DB name) A01F 12/10

Claims (1)

(57) [Claims] 1. A feed chain (4) and a clamping rail (1) for clamping and transporting a grain culm and supplying it to a threshing unit (5), and releasing the clamping action of at least a part of the clamping rail (1). A dust release plate (10) for closing a handling port above a grain stalk held and conveyed by the feed chain (4) and the holding rail (1) is provided so as to be able to move up and down freely and down. In the self-removing type combine provided in an urged state, the dust releasing plate (10) is forcibly lifted only in the clamp releasing state by the clamping releasing means (17, 18). ) And a threshing cereal culm supply unit of a self-removing combine provided with linking operation means (17, 23) for linking the dustproof plate (10).