JP2927665B2 - 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 Hitherto, as the above-mentioned threshing grain culm supply section, a structure provided with a clamping release means for releasing a clamping action of at least a part of a clamping rail has been researched and developed. 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. It is designed so that the short culm can be put into the threshing device by releasing at least a part of the clamping rail and the entire culm can be thrown into the threshing device. Conventionally, a part of the clamping rail from the starting end is completely clamped by the clamping release means. The configuration was such that the effect was lost.

[0003]

However, the threshing apparatus of the self-removing type is originally constructed so that the spikes of the cereal stalks are inserted into the handling room and the threshing by the handling cylinder can be realized efficiently. However, when the short culm is completely thrown into the threshing machine without any pinching action from the start end of the clamping rail, the short culm is threshed just by being stirred and blown in the handling room like a general-purpose combine threshing machine. As a result, the threshing efficiency is more likely to be lower than in the case of the above-mentioned handling threshing, and there is room for improvement in terms of improving the recovery efficiency of the grain for short culm. An object of the present invention is to not only prevent short culm due to insufficient handling depth but also to sufficiently improve threshing efficiency of short culm.

[0004]

SUMMARY OF THE INVENTION The present invention is characterized in that a feed chain and a clamping rail are provided for clamping and transporting a grain culm and supplying it to a threshing device, and a clamping releasing means for partially clamping the clamping rail. In a combine equipped with a gripping force, the clamping rail is made to have a smaller clamping force than the non-clamping part at the front side of the part where the non-clamping part is located, and a smaller clamping force than the part at the rear side of the conveyance. The means have been provided.

[0005]

In other words, when a part of the holding rail is set to the non-holding state by the holding release means, the part of the holding rail which is on the front side of the non-holding state by the holding force reducing means is set to a weak holding state. The short culm is first gripped weakly by a part of the clamping rail and is pulled into the threshing device while receiving efficient threshing action with the handling depth being as large as possible, and then the short culm is not clamped The whole culm is thrown into the threshing equipment at the clamping rail part of Therefore, not only can the short culm be prevented from being left unhandled due to the lack of handling depth by introducing all culms,
Throwing short culms, threshing can be performed to some extent even by threshing,
As a whole, the grain recovery efficiency for short culms can be sufficiently improved.

[0006]

As a result, not only the short culm can be prevented from being left unhandled due to a lack of handling depth, but also the threshing efficiency of the short culm can be sufficiently improved. Combines can now be provided.

[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.
Is provided.

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.

The guide rod 20 extending from the fixed frame portion 33a of the rear transport device 33 to the transport surface in front of the feed chain 4 is vertically swingable about a fulcrum P on the starting end side, and
The trailing end is provided in a state pressed against the feed chain 4 by the holding rail 1, and the grain rods passed from the rear conveying device 33 to the front part of the feed chain 4 are prevented from slipping through by the guide rods 20, and the grain is satisfactorily removed. It is configured so that culm inheritance can be realized.

As shown in FIGS. 2 to 5, a plurality of rail unit bodies 1a, 1b,
1c, the rail unit bodies 1a, 1b, 1c are connected to each other by pins 13 so as to be able to swing relative to each other, and 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 each rod 15 is lowered. A spring 16 for biasing is provided, and the spring 16
Thus, the holding force of the holding rail 1 is obtained.

The rod 15 for the second or subsequent part 1b from the front of the rail unit bodies 1a, 1b, 1c is linked to a hydraulic or electric drive unit 17 by a link type interlocking device 18, and the rail unit body 1a , 1b, and 1c, the rod 15 for the starting end 1a is linked to the driving unit 17 by a link-type interlocking device 22 having a flexible unit 21, and the driving unit 17 is automatically activated based on information from the sensors 12a and 12b. An operating controller 19 is provided, and in a state where the handling depth control mechanism is operated to the limit position on the shortest culm side, an extremely short culm in which both sensors 12a and 12b do not detect the grain culm is detected. After a set time from the detection time, that is, when the very short culm, for which the handling depth cannot be completely controlled, reaches the front portion of the clamping rail 1, the rod 15 is forcibly driven by the driving unit 17. Temperature to, initial part 1 of the clamped rail 1
The drive unit 17 is automatically operated by the controller 19 so that a is in a weakly clamped state and the rear portion 1b is in a non-clamped state. That is, when a short culm occurs locally by cutting the grain culm while raising the cutting unit 3 at the ridge, the short culm is first weakly clamped by the starting end portion 1a of the clamping rail 1, and As shown in FIG. 4, threshing is performed efficiently while the handling depth is maximized while the threshing device 5 is slightly retracted by the handling cylinder 6.
Next, as shown in FIG. 5, the entire culm is thrown into the threshing device 5 with the clamping rail portion 1b in a non-clamping state, so that the short culm is prevented from being left unhandled due to insufficient handling depth in the threshing device 5. I have.

Alternative Embodiment The mounting configuration of the holding rail 1 and the position and range of the weak holding state and the non-holding state can be appropriately selected. In short, a part 1 b of the holding rail 1 is set in the non-holding state. What is necessary is just to constitute so that the part 1a of the front side of conveyance may be in a weak clamping state. A specific configuration for setting the portion 1b of the clamping rail 1 to the non-clamping state may be such that the biasing force may be eliminated or weakened by, for example, moving the reaction force point of the spring 16, and the design may be appropriately changed in an automatic operation type or an artificial operation type. They are collectively referred to as holding release means 17 and 18. The specific structure for weakly holding the portion 1a of the holding rail 1 may be, for example, the urging force may be weakened by moving the reaction point of the spring 16, and the design may be appropriately changed in an automatic operation type or an artificial operation type.
These are collectively referred to as clamping force reducing means 17,22. Further, the clamping force in the weak clamping state may be appropriately set in accordance with the device characteristics and grain culm properties so that the short culm is appropriately pulled into the threshing device 5 while being handled and threshing. If the driving parts of the clamping release means 17 and 18 and the clamping force reducing means 17 and 22 are shared, the structure can be simplified and inexpensive, and in the case of a manual operation type, the operation can be simplified and convenient. Each of the driving units 17 and 18 and the clamping force reducing means 17 and 22 may be provided so as to be capable of being automatically operated, operable in cooperation with each other, or operable independently of each other.

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 clamping is reduced and released.

FIG. 4 is a sectional view taken along line AA in FIG. 3;

FIG. 5 is a sectional view taken along line BB in FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Nipping rail 4 Feed chain 5 Threshing device 17,18 Nipping release means 17,22 Nipping force reduction 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. In the factory (56) References: Japanese Utility Model Sho 55-25420 (JP, U) (58) Fields investigated (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 conveying a grain culm and supplying it to a threshing device (5), and clamping a part of the clamping rail (1) in a non-clamp state. In the self-removing type combine provided with the releasing means (17, 18), a portion of the holding rail (1) which is closer to the front side than the non-clamped state and which is conveyed from the non-clamped part.
A threshing grain culm supply section of a self-removing combine provided with clamping force reducing means (17, 22) for reducing the clamping force to a smaller clamping force than the portion on the rear side .