JP3418071B2 - Weeding structure of 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 combine harvester, and more specifically, it separates a grain culm to be mowed from a grain culm to be non-shredded, and the grain culm to be non-shredded is moved laterally of a pre-cutting device or crawler traveling. The present invention relates to a combine weeding structure that prevents the lateral sides of the device from being entangled.

[0002]

2. Description of the Related Art A conventional combine harvester is an actual Kaihei 5-672.
As disclosed in Japanese Patent Publication No. 29, a front partial grass rod and a rear partial grass rod are provided on the lateral side portion of the mowing pretreatment device and the lateral side portion of the crawler traveling device, and the two lateral weed rods are connected to each other to make the machine horizontal. It is constructed so that it can slide in and out outward.

[0003]

According to the conventional weeding structure described above, the degree of entanglement between the grain culm to be cut and the grain culm to be uncut,
Alternatively, by adjusting the withdrawal rod according to the elastic restoring force of the grain culm, etc., a good weeding action can be performed as compared with a fixed weed rod, and with the end portion of the front weed rod. By connecting the starting end of the rear part grass rod, it is possible to successfully transfer the non-shearing grain culm from the front part grass rod to the rear part grass rod, but the ground height of the branch grass rod is constant. , Especially, in the initial weeding of the grain culm to be trimmed and the grain culm to be not trimmed, it is difficult to surely separate the grain by the action of the front part grass rod on the tight tip of the grain depending on the length of the grain, and When the grain culms were soft and long, it was difficult to prevent the tips of the non-shredded grain culms that were disentangled from hanging down toward the fuselage side, and there was still room for improvement.

According to the present invention, a good weeding action can be achieved irrespective of the entanglement, height or hardness of the culm, and the non-shearing culm can be successfully transferred from the front grass rod to the rear grass rod. The purpose is to do so.

[0005]

According to a first aspect of the present invention, there is provided a front partial grass rod, which is pivotally fixed around a longitudinal axis of a machine body, on a lateral side portion of a pre-mowing treatment device, and a lateral side of a crawler traveling device. side to provided a partial grass rod after projecting and retracting a fastenable to the machine body transverse outward, before
The partial grass rod is separated from the front and rear axis of the fuselage toward the rear end side.
An upper working rod with an inclined part that increases the separation, and above
It was installed closer to the longitudinal axis of the fuselage than the partial action rod.
A lower working rod and a rear end of the upper working rod
Side in the front-back direction of the machine so that it overlaps with the starting end side of the rear grass rod.
And a rear portion extending over the lower working rod and the rear portion grass rod.
A retractable intermediate stalk is installed to prevent the uncut grass culm from entering between the end of the front grass rod and the beginning of the rear grass rod while allowing the grass rod to move in and out. The vegetative structure of a combine.

According to a second aspect of the present invention, the rear partial grass rod is configured so that it can be moved back and forth to the lateral side of the machine body by rotating around the longitudinal axis of the machine body. [Operation] According to this configuration, not only the front grass rod but also the rear grass rod is configured to be rotatable around the longitudinal axis of the machine body, so that the non-crop target that passes through the lateral side portion of the crawler traveling device is not cut. With respect to the grain culm, the rear partial grass rod can be operated at an optimum position according to the length and hardness of the grain culm. [Effect] According to the invention according to claim 2, the rear partial grass rod acts on the optimum position according to the length and hardness of the grain culms even for the non-shredder grain culms that pass through the lateral sides of the crawler traveling device. Therefore, it is possible to prevent the tip portion of the non-shredder grain culm passing through the lateral side portion of the crawler traveling device from hanging down toward the machine body, and a good guide action is exhibited.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an overall side view of a combine, in which a threshing device 3 is mounted on a machine body frame 2 equipped with a crawler traveling device 1, and a cutting pretreatment device 4 is lifted up and down in front of the machine body frame 2. It is freely connected.

The cutting pretreatment device 4 comprises a weeding tool 5 for combing an overlaid grain culm, a raising device 6 for further raising the culled grain culm, and a clipper type cutter 7 for cutting the root of the raised grain culm. A vertical transfer device 8 for lifting and transferring the cut culm toward the threshing device 3 is provided.

On the lateral side portion of the pre-cutting treatment device 4, the amount of the planted grain stalk that is laterally outwardly extended around the machine front-rear axis P1 for dividing the grain culm to be harvested and the non-shear grain culm is divided. A front part grass rod 9 is provided which can be fixed in the grass action posture, the retracted posture drawn to the side of the machine body, and any rotation position therebetween. Further, the lateral side portion of the crawler traveling device 1 inherits the non-crop target grain culm from the front partial grass rod 9 to prevent the non-crop target grain culm from being entangled with the crawler traveling device 1 P2. A rear partial grass rod 10 is provided which can be fixed around the weeding action posture protruding laterally outward of the machine body, the retracted posture drawn to the machine body side, and an arbitrary rotation position therebetween.

The support structure of the front partial grass rod 9 will be described in detail. As shown in FIGS. 3 and 4, the front partial grass rod 9 is shown.
Consists of a bow-shaped working rod (corresponding to the upper working rod) 9a and an L-shaped strut rod (corresponding to the lower working rod) 9b, and a pivot pin 11 is provided at the lower front end of the bow-shaped working rod 9a. The pin hole 12a and the arcuate bolt hole 12 are provided in the lower rear part of the L-shaped support rod 9b.
b is provided with a fan-shaped plate 12, and on the other hand, on the front end side of the grass supporting rod 13, the pin hole 1 for inserting the pivot pin 11 is inserted.
The rear bracket 15 is provided with a front bracket 14 provided with a fixing pin 15a that can be inserted into the pin hole 12a of the fan-shaped plate 12 and a fixing bolt 15b that can be inserted into the arcuate bolt hole 12b. And further,
The fixing bolt 15 protruding from the fan-shaped plate 12
The coil spring 16 is externally fitted to b, the nut 17 is screwed to the tip of the bolt 15b, and the front part grass rod 9 is rotatable about the machine front-rear axis P1.
The urging force of 6 allows frictional holding at any rotation position.

The supporting structure of the rear partial grass rod 10 will be described in detail. As shown in FIGS. 3 and 5, the front end and the rear end of the rear partial grass rod 10 having a U-shape in a plan view are respectively formed. Similar to the fan-shaped plate 12 of the front grass rod 9, fan-shaped plates 18 and 18 having pin holes and arcuate bolt holes are provided, while the front end and the rear end of the machine body frame 2 are respectively provided with the front part. Similar to the rear bracket 15 of the partial grass rod 9, there are provided brackets 19 and 19 each having a fixing pin 19a that can be inserted into a pin hole of the fan-shaped plate 18 and a fixing bolt 19b that can be inserted into an arcuate bolt hole. The rear partial grass rod 10 is configured to be rotatable about the longitudinal axis P2 of the machine body and to be frictionally held at an arbitrary rotational position by an urging force of a coil spring 20 externally fitted to the fixing bolt 19b.

As shown in FIGS. 1 to 3, the front partial grass rod 9 extends over the front partial grass rod 9 and the rear partial grass rod 10.
An intermediate dividing weed rod 21 is provided for transferring the non-shredded grain culm from No. 2 to the rear partial weed rod 10. The intermediate branch rod 21
Is an inner and outer double expansion rod 21a, 21b, the front end side of which is rotatably supported via a ball joint 22 provided on the lower surface of the rear bracket 12, and the rear end side of the extension rod 21b. It is connected to the front end of the rear partial grass rod 10 relatively rotatably via a ring joint 23 composed of a ring 23 a provided and a ring 23 b provided at the front end of the rear partial grass rod 10.

With the above construction, the front part grass rod 9 is rotated around the machine front-rear axis P1 in accordance with the height of the grain culm to act on the tight tip of the entanglement, and the rear part grass rod 10 is moved to the machine front-rear shaft core. It can be rotated to P2 and acted at an optimum position according to the elastic restoring force of the grain and the height of the grain. In such a case, when the amount of protrusion of the front part rod 9 becomes larger than the amount of protrusion of the rear part rod 10 due to the relative rotation of the front part rod 9 and the rear part rod 10, the front part rod 9 The non-crop target grain culms that have reached the end portion of the cutting portion wrap around the end portion of the front partial grass rod 9 and try to reach the lateral side portion of the pre-cutting treatment device 4, but the intermediate sward rod 21 causes the side toward the inside of the machine body. Is prevented from being moved to and is inherited at the starting end of the rear partial rod 10.

As shown in FIGS. 7 and 8, in this combine, a handing guide rod 24 is provided on the lateral outside of the feed chain 3a of the threshing device 3 so that a hand can be put on by mounting a grain culm. is there. The hand-operated guide rod 24 is vertically swingable around a fulcrum pin 25 between a hand-operated position and a non-operated position, and can be locked and held at an arbitrary vertical position via a ratchet mechanism 26. There is. The ratchet mechanism 26 is provided with a locking claw 2 provided on the manual guide rod 24.
7, saw-toothed locked portion 2 provided on the side wall of the threshing device 3
8. Long hole 2 for the fulcrum pin 25 of the guide rod 24 for handling
9. The spring 30 biases the manual guide rod 24 so that the locking claw 27 engages with the saw-toothed locked portion 28. When switching the hand-operated guide rod 24 between the hand-operated position and the non-actuated position, pull the hand-operated guide rod 24 forward against the urging force of the spring 30 to lock the pawl 27 and the sawtooth shape. The engagement with the locked portion 28 is released, and then the hand-operated guide rod 24 is vertically swung to
When the forward pulling of the manual guide rod 24 is released, the locking claw 27 and the saw-toothed locked portion 28 are engaged with each other at an arbitrary position. The inner surface of the U-shaped guide 31 provided on the side wall of the threshing device 3 for guiding the hand-operated guide rod 24 up and down has a hand when the hand-operated guide rod 24 is in the hand-operated position. When the handling guide rod 24 is swung left and right, an engine stop pressure-sensitive switch 32 that is operated in accordance with that is provided. When the hand manipulation guide rod 24 is swung left and right during manual operation, Pressure-sensitive switch 3
It is constructed so that the engine can be stopped after hitting 2.

[Other Embodiments] When the rear partial rod is pushed back and forth toward the lateral outside of the machine body, it may be slidable.

[Brief description of drawings]

1] Overall side view of combine

FIG. 2 is a schematic plan view of the same.

FIG. 3 is a perspective view of a weeding structure.

FIG. 4 is a vertical sectional front view showing a rotating structure of a front grass rod.

FIG. 5 is a vertical cross-sectional front view showing the rotating structure of the rear partial grass rod.

FIG. 6 is a vertical cross-sectional side view of a main part showing a rotating structure of a front grass rod.

FIG. 7 is a side view showing a support structure of a guide rod for manual handling.

FIG. 8 is a vertical cross-sectional front view of the U-shaped guide of the manual guide rod.

[Explanation of symbols]

4 Mowing pretreatment device 9 front part grass rod 10 Rear part grass rod 21 Middle branch grass rod P1 front and rear axis P2 front and rear axis

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-7-203745 (JP, A) JP-A-9-215430 (JP, A) Actually open 6-84813 (JP, U) Actually open 63- 71629 (JP, U) Actual development 57-41038 (JP, U) Actual development 54-27036 (JP, U) Actual development 49-108725 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) A01D 63/00-63/04

Claims (2)

(57) [Claims] 1. A front partial grass rod that can be fixed to the lateral side of the mowing pretreatment device about the longitudinal axis of the machine body and a rear part that can be fixed to the lateral side of the crawler traveling device laterally outwardly of the machine body. A partial grass rod is provided, and the front grass rod is separated from the front and rear axis of the machine body toward the rear end side.
An upper working rod with an inclined portion that increases the distance, and its
It is installed closer to the longitudinal axis of the fuselage than the upper working rod.
And a lower working rod, and the rear end side of the upper working rod is a rear part in the machine longitudinal direction.
It is provided so as to be overlapped with the starting end side of the grass rod, and the rear partial grass rod extends over the lower working rod and the rear partial grass rod.
A combine harvester rod is installed to prevent the non-shearing culm from entering between the end part of the front part grass rod and the start end part of the rear part grass rod while allowing the entry and exit of trees. Grass structure. 2. The combine weeding structure according to claim 1, wherein the rear partial grass rod is configured so as to be able to be adjusted in and out toward the lateral outer side of the machine body by rotating around the longitudinal axis of the machine body.