JP2886039B2 - Combine harvesting stem and stem transport structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical stem of a stem stem that has been raised by a raising device and cut by a cutting device while being held between a guide body and a transport chain opposed to the guide body. The present invention relates to a combine harvester stem and culm transfer structure provided with an endless transfer device configured to be transferred to a transfer device.

[0002]

2. Description of the Related Art Conventionally, this type of combine harvester stalk culm transport structure is disclosed in, for example, Japanese Patent Application No. 5-77800 filed by the present applicant. And an endless chain with a projection for transporting the chain to a vertical transport device, and a guide rod facing the chain in the transport path of the chain. In other words, the guide rod and the chain are transported while clamping the stem portion of the cutting stem, and the guide rod is moved with respect to the chain so that it can be transported well even if the volume of the cutting stem is slightly changed. A separate tension mechanism is provided to apply elasticity and to apply tension to the chain along the return path opposite to the transport path of the chain.

[0003]

However, in the conventional structure described above, when the volume of the cut stem is extremely large, or when a large foreign object is clamped between the chain and the guide rod, the tension of the chain is reduced. Is extremely large, so that unduly acting force acts on the tension mechanism together with the chain, and there is a possibility that the chain and the tension mechanism may be damaged. The present invention has been made in view of the above-mentioned circumstances, and even if the volume of a stalk culm to be transported becomes extremely large or a large foreign substance is pinched by a transport chain, the transport chain or the like is not damaged. It is an object of the present invention to provide a combine harvester stem culm transport structure capable of automatically adjusting the chain tension.

[0004]

SUMMARY OF THE INVENTION According to the present invention, there is provided a harvesting stem / culm transfer structure for a combine, which achieves the above object.
In the structure of the aforesaid structure, a chain receiving regulating guide member that presses the conveying chain of the endless conveying device along the conveying path of the endless conveying device toward the side, and the conveying chain in the non-conveying path of the endless conveying device. Tight toner is provided for regulating the outside so that it does not spread over the outside, and in conjunction with the movement of the chain receiving regulation guide member into the inside of the machine, the tight toner is moved to the back side so that the tension of the transport chain is loosened. In this case, the chain receiving regulation guide member and the tight toner are linked to each other. The operation and effect of this characteristic configuration are as follows.

[0005]

In other words, the holding force between the transport chain and the guide body is increased by the chain receiving regulating guide member which presses the transport chain of the endless transport device toward the side of the guide body.
If the stem diameter of the transported stem becomes extremely large, when the chain receiving regulating guide member pressed by the pressing force from the transported material moves, the tighter loosens the chain tension in conjunction with the movement, so that the Unnecessarily increasing transport chain tension due to objects is avoided.

[0006]

Therefore, according to the present invention, even if the amount of the conveyed object becomes extremely large, the conveying chain is loosened according to the amount, so that the tension of the conveying chain becomes unduly high. And the transport chain is prevented from being broken due to high tension.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 4 shows a combine. This combine is equipped with a threshing device 3, a control unit 4 and the like mounted on a body frame 2 supported by a pair of left and right crawler traveling devices 1 and 1, and swings up and down around a horizontal axis X at a front end of the body frame 2. The cutting pre-processing unit 6 is movably mounted.

As shown in FIGS. 1 and 4, the pre-cutting processing section 6 comprises four fixed weeding tools 7a, 7b, 7c, 7d,
Individual grain stem raising devices 8A, 8B, 8C, and a mowing device 5
The cutting frame 11 is configured to support the gear-shaped scraping rotary members 9A, 9B, 9C, and the like, and the vertical transport device 10. The distance between the rightmost fixed weeding tool 7a and the second fixed weeding tool 7b from the right is set to be larger than the distance between the other fixed weeding tools 7a. Columns can be introduced. The vertical transport device 10
It is composed of an ear-locking and transporting mechanism 10A and a stock-holding and transporting mechanism 10B, and is configured to be swingable up and down around a left-right fulcrum X at a rear portion thereof so that the handling depth can be adjusted.

Three grain stem raising devices 8A, 8B, 8C
Are arranged side by side on the left and right, in order from the right, a first elevating device 8A and second and third elevating devices 8B, 8C in which a pair of stem and culm introduction routes Rb, Rc are arranged facing each other. Are juxtaposed. Then, the three scraping rotating bodies 9A, 9
B and 9C are disposed in a state that they are located behind the first raising device 8A, the second raising device 8B, and the third raising device 8C, respectively, and three scraping rotating bodies 9A and 9 are provided.
B, 9C, the second scraping rotary member 9 which is the central one
B has a smaller diameter than the others. These scraping rotary bodies 9A, 9B, 9C are provided with base locking transporting devices 12, 12, 12, respectively, which share the rotation axis. Further, a stock-holding / conveying device 14 as an endless conveying device sharing the first shaft 13 that forms the rotation axis of the first scraping rotator 9A located at the right end is provided facing left rearward. In this stock-holding / conveying device 14, a conveying chain 14A having a protrusion capable of engaging with a stem is disposed at a position behind the driven sprocket 15 of the first shaft 13 and the second scraping rotary member 9B. The transfer chain 14 is extended over the drive sprocket 17 of the two shafts 16.
In the stem-and-culm transfer route from the first shaft 13 of A to the rear of the second scraping rotary member 9B, the transfer chain 14A
A guide rod 14B as a guide body is disposed so as to be opposed to the guide rod 14B, and the guide rod 14B is elastically urged toward the transport chain 14A, so that the stem culm is held between the transport chain 14A and the guide rod 14B. Can be transported. That is, the root of the stem that was introduced from the stem / culm introduction route Ra and cut while being raised by the first raising device 8A is transported by the root clamping transport device 14 of the vertical transport device 10 by the root clamping transport device 14. It is transported to the beginning.

As shown in FIGS. 2 and 3, a rail member 18 as a chain receiving regulating guide member is disposed inside the chain loop around the conveying path in the conveying chain 14A. The rail member 18 includes a rail portion 18a that comes into contact with the transport chain 14A along the transport path, and a support 19 is connected to the rail member 18. On the other hand, when the return path in the transport chain 14A is located in the vicinity, the transport chain 14A is pressed from the outside of the chain loop to
The tie toner 20 for restricting the spread of 4A to the outside is provided. The tight toner 20 includes a rail portion 20a that presses the transport chain 14A, and a cylindrical boss 21 that is pivotally supported on the rail portion 20a so as to swing about a vertical axis P. The cylindrical boss 21 is inserted into a guide hole 22a of a guide support portion 22 erected on the mowing frame 11 to allow movement in the axial direction and tilting in a small range around the guide hole 22a. And so on. Then, from the opening at the end of the cylindrical boss 21 into the cylindrical boss 21,
A rod-like body 19a provided on the support 19 is inserted so as to be able to move back and forth. Therefore, the rail member 18 is supported by the cylindrical boss 21 and the guide support 22. Further, a first compression spring 23 surrounding the rod 19a is disposed between the support 19 and the flange 21a at the end of the cylindrical boss 21. The first compression spring 23 is The tube boss 21 is separated from each other and elastically urged.
A second compression spring 24 is disposed between the flange 21a and the guide support 22 in a state surrounding the cylindrical boss 21. The second spring connects the collar 21a and the guide support 22 to each other. They are separated from each other and are elastically biased. still,
The second compression spring 24 has a larger spring constant than the first compression spring 23.

Therefore, according to the above configuration, the large elastic biasing force of the second compression spring 24 causes the tight toner 20
Tensions the transport chain 14A and regulates the transport chain 14A by the elastic urging force of the first compression spring 23 so that the transport chain 14A is not unduly pushed into the loop by a stem or the like at the transport path location during stem and stem transport. I have. Then, when the amount of the transport stem is extremely large, the rail member 18 is displaced toward the inside of the loop by the stem. The rod 19a is moved by the displacement.
Is displaced into the cylindrical boss 21, and the first compression spring 23 is compressed to press the collar 21a, that is, the cylindrical boss 21, against the urging force of the second compression spring 24. Since the toner 20 is displaced outward so as to loosen the transport chain 14A, it is possible to prevent the transport stem 14A having a large amount thereof from unduly increasing the tension of the transport chain 14A. Also, the rail member 18,
Since the tie toner 20 and the members that support and link the toner 20 are substantially disposed in the loop of the transport chain 14A, the tension structure of the transport chain 14A is compact.

Next, another embodiment will be described. In addition, about the structure similar to the said Example, description is abbreviate | omitted and the same code | symbol is attached. As shown in FIGS. 5 and 6, stem and stem transport is performed by the transport chain 14 </ b> A and the guide rod 14 </ b> B in the stock-holding and transporting device 14 as an endless transport device. A chain receiving regulation guide member 18 is provided in the loop. In addition, one end portion is locked to a support shaft 25 which is erected on the cutting frame 11 so as to be rotatable around the vertical axis Y, and a winding spring 31 is provided. The chain receiving restricting guide member 18 is fixed to the chain receiving restricting member 18 with its end extended. That is, the chain receiving restricting member 18 is divided by the two vertical pins 27 and 28 arranged in the front and rear direction in the stem and stem transfer direction so as to be relatively swingable relative to each other about the longitudinal axes P1 and P2. 18C and the vertical pin 2
7 and 28, and the front and rear ends thereof are
In a state in which the front and rear split rail portions 18A and 18C are configured to urge the transfer chain 14A to swing around the longitudinal axes P1 and P2 by the spring wires 26 applied to the respective 8A and 18C. The extended other end of the winding spring 31 is wound around the vertical pins 27 and 28 and locked. And each of the divided rail portions 18A, 18B, 18C
Is set so that the state in which the contact edge portion of the divided rail portions 18A, 18B, and 18C is substantially in a straight line in plan view is the swing limit of each of the divided rail portions 18A, 18B, and 18C. Front and rear split rails 18A, 18C
Is set so that the inside of the chain loop can swing relatively. Accordingly, the spring chain 26 elastically urges the entire chain receiving regulating member 18 so that the transport chain 14A presses toward the guide rod 14B, and the spring line 26 separates each of the divided rail portions 18A, 18B,
The contact edge of the 18C with the transport chain 14B is elastically urged so as to be substantially in a straight line in plan view.
Further, a tie toner 30 is provided via an arm 29 integrally connected to the support shaft 25. The tighter 30 is pivotally attached to the arm 29 so as to be swingable about the longitudinal axis L, and the returner of the transport chain 14A is moved from the outer side to the inner side of the chain loop. 14A to push the transport chain 14
A is provided so as to restrict the spread of the toner A to the outside.
It is elastically biased so as to press toward 4A.

Therefore, with the above configuration, the winding spring 31
With the large elastic biasing force, the tie toner 30 tensions the transport chain 14A, and the elastic biasing force of the spring wire 26 causes the transport chain 14A to be unduly pushed into the loop by the stem or the like at the transport route at the time of the stem and stem transport. It is regulated not to be. When the amount of the transport stem is extremely large, the entire rail member 18 and each of the divided rail portions 18A, 18B, 18C are displaced toward the inside of the loop by the stem. Due to the displacement of the entire rail member, the winding spring 31 is entangled in the compression alligator, whereby the tight toner 30 is displaced outward so as to loosen the transport chain 14A by the rotating support shaft 25. This prevents the tension of the transport chain 14A from becoming unduly high. In addition, since the rail member 18, the toner 20 and the members for supporting and linking the rail members 18 are substantially arranged in the loop of the transport chain 14A, the transport chain 14A
The tension structure is compact.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the structure shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a plan view showing a stalk / culm confluence part of a combine pre-cutting processing part.

FIG. 2 is a cross-sectional plan view showing a main part of the endless transport device.

FIG. 3 is a longitudinal sectional side view showing a main part of the endless transport device.

FIG. 4 is a side view showing the front of the combine.

FIG. 5 is a cross-sectional plan view showing a main part of an endless transport device according to another embodiment.

FIG. 6 is a longitudinal sectional side view showing a main part of an endless transport device according to another embodiment.

[Explanation of symbols]

 Reference Signs List 5 Cutting device 8A to 8C Raising device 10 Vertical transport device 14 Endless transport device 14A Transport chain 14B Guide body 18 Chain receiving regulating guide member 20 Tight toner

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) A01D 57/00 A01D 61/00 301

Claims (1)

(57) [Claims] 1. A stem of a stem culm raised by a raising device (8A to 8C) and cut by a cutting device (5) is opposed to the guide (14B) and the guide (14B). An endless transfer device (1) configured to transfer to a vertical transfer device (10) while being pinched by a transfer chain (14A).
4) A harvesting stem / culm conveying structure of a combine having the above 4),
A chain receiving regulating guide member (18) for pressing the conveying chain (14A) of the endless conveying device (14) toward the arm by the guide body (14B); A tie toner (20) for restricting the transport chain (14A) from spreading outward in the non-transport path is provided, and the chain receiving restricting guide member (18) is moved inward in the machine. Then, the chain receiving restricting guide member (18) and the toner (2) move the tighter (20) so that the tension of the transport chain (14A) is loosened and moved.
0) and a transporting structure of the harvested stem and culm of the combine.