JPS642595Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a grain culm conveying device for a combine harvester. More specifically, the grain culms are transferred from the lifting device to the grain conveyor provided at the rear thereof without causing the grain culm crossing phenomenon, and moreover, the grain culms are transported in a manner that reduces the amount of grain culms carried into the lifting case. This invention relates to a grain culm conveying device for a combine harvester.

Between the pulling device in the combine harvester and the grain culm conveying body, such as the ear tip conveying body and the stock root conveying body installed behind it, the grain culm lifted by the pulling device is transferred to the grain culm conveying body. In order to ensure a smooth transition, guide plates with terminal edges extending rearward are provided on the rear surfaces of the side-by-side lifting cases so as to face each other. However, according to the conventional device, a dead space occurs between the above-mentioned guide plate and the tip of the conveying claw at the starting end of the grain culm conveying body.
A part of the grain culm pulled up by the pulling device will stay in this dead space, and this staying grain culm will gradually join the following grain culm and be taken over to the rear grain culm conveyor. There is a problem that a cross phenomenon of grain culms occurs at the time of merging.

In addition, according to the conventional device, the grain culm pulled up by the pulling device is placed on the side where the grain culm is pulled up at the conveyance start end of the next grain culm conveyor, that is, on the same side as the side where the feed chain of the threshing section is located. There is a tendency for the tip of the ear to be biased towards the placed raising case. Therefore, there are many troubles in which the grain culm is drawn into the lifting case by the lifting claw.

The purpose of the present invention is to solve the above-mentioned problems with conventional devices, such as the occurrence of cross-grain culm phenomenon when transferring the grain culm from the lifting device to the rear grain culm conveyor, and the problem of the grain culm being pulled up by the lifting claw. It is an object of the present invention to provide a grain culm conveying device for a combine harvester which can prevent troubles such as being drawn into a case.

A grain culm conveying device for a combine according to the present invention which achieves the above object is a grain culm conveying body disposed between the rear of a hoisting device in which a hoisting case having a hoisting claw is arranged in parallel and the feed chain on the threshing machine side. In a combine harvester configured in upper and lower stages to convey the tip side and stock side, and pivoted so that the conveyance starting end side can be tilted up and down, a tilting range of the starting end side of the ear tip conveying body is provided on the rear surface of the both lifting cases. guide plates are fixed respectively along the feed chain side guide plate, and a flat portion is formed on the upper end side of the feed chain side guide plate to protrude laterally from the rear surface of the lifting case and cover approximately half of the lengthwise direction of the lifting claw. It is something.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained below with reference to embodiments shown in the drawings.

FIG. 1 is a side view showing a pre-processing section of a combine harvester equipped with a grain culm conveying device according to the present invention;
6 is a traveling device, and 17 is a threshing unit mounted on the platform of the traveling device 16. A feed chain 18 is provided on the left side of the upper part of the threshing section 17 in the traveling direction.

At the front of the machine, cutting blade frames 3A and 3B provided in a bifurcated manner on the preprocessing frame 3 and a pair of left and right lifting cases 2A and 2B are provided so as to be able to freely tilt up and down about a horizontal axis 19. It is being Grass dividing plates 1 are provided at the front ends of the cutting blade frames 3A and 3B, respectively.
A and 1B, and a cutting blade 4 is provided at the bottom. . At the rear of the lifting cases 2A and 2B, a raking star foil 5, a stock conveying chain 6, and a raking belt 7 are arranged at the lower part to convey the grain culm stock from the front to the rear, and the upper part A grain conveyor chain 8 and a grain conveyor 9, which also serve as handling depth adjustment, are disposed in the grain culm conveyor.

By operating the operation lever 13 in the front-back direction, the grain culm conveying bodies consisting of the stock head conveying chain 8 and the ear conveying device 9, which also serve as handling depth adjustment, can be tilted up and down as shown by the chain line at the front end of the grain conveying start end. can be done. When the grain culms are long culms, the transport starting ends of these grain culm conveyors are raised to approach the lifting case, and when the grain culms are short culms, the transport start ends of these grain culm transport bodies are raised. It is designed to be lowered and separated from the lifting case.

FIG. 2 is a view taken along arrow A in FIG. 1, showing the state in which the grain culm conveying bodies of the stock head conveying chain 8 and the ear tip conveying device 9 inherit a long culm. Moreover, FIG. 3 shows the state when the grain culm conveyor inherits the short culm, and is a view taken in the direction of arrow B in FIG. 1. FIG. 4 is a front view of the apparatus shown in FIG. 1, showing only the essential parts.

As shown in Figures 2 to 4, the lifting case 2
Guide plates 14A and 14B for guiding grain culms are respectively fixed to opposing sides of the rear surfaces of A and 2B. Of these, the guide plate 14B of the lifting case 2B provided on the right side in the direction of travel is similar to the conventional one, and is formed to extend diagonally rearward directly from the inner surface of the lifting case 2B. The guide plate 14A of the lifting case 2A provided on the left side in the direction of movement, that is, the transport start end of the grain transporting body of the stock transport chain 8 and the ear transport device 9 is the side that pulls up the grain, and the feed chain 18 is located. The upper end side of the guide plate 14A corresponding to the side is the lifting case 2.
A flat part A is formed which extends laterally from the rear surface of A to cover approximately half of the length of the lifting claw 2, and the lower end side extends from the inner end of the rear surface of the lifting case 2A to the short culm adjustment position as shown in FIG. A sloped surface portion (B) is formed which projects toward the rotating shaft 20 of the idler wheel on the starting end side of the ear tip conveying device 9, and a planar guide surface is provided between the above-mentioned flat surface portion (A) and sloped surface portion (B). It is shaped like a connection. Therefore, the lateral extension of the guide plate 14A is longer toward the top and shorter toward the bottom, forming an inclined surface that faces diagonally rearward toward the bottom. Furthermore, as shown in FIG. 1, the rearwardly extending end edge of the guide plate 14A is shaped to follow the vertical tilting locus of the transport start end of the grain culm transporter. The tip trajectories of the conveying claws 9' overlap in side view.

Conventionally, when performing two-row cutting with a combine harvester, the grain culm A on the left side in the direction of travel stays between the guide plate 14A and the starting end of the grain culm conveyor, and this intermittently merges with the grain culm B on the right side in the direction of travel. However, in the above-mentioned device, the guide plate 14A caused cross-grain culm phenomenon, which was an obstacle to smooth combine harvester operation.
However, on the rear surface of the lifting case 2A, the upper end side extends in the lateral direction so as to cover approximately half of the length of the lifting claw 2', and the lower end side extends toward the rotational fulcrum on the starting end side of the tip conveyor. The upper end side and the lower end side form a continuous guide surface, and the rearwardly extending terminal edge of the guide plate 14A is formed to be parallel to the vertical tilting locus of the transport start end of the grain culm transport body. Therefore, the above-mentioned stagnation of grain culm A will not occur, and the cross-grain culm phenomenon will be eliminated.

Furthermore, the grain culms pulled up by the lifting cases 2A and 2B tend to be biased to the left side in the direction of movement where the feed chain 18 is located, but
Since the grain culm that is about to shift is moved toward the center, the conventional problem of the grain culm being pulled into the lifting case 2A by the pulling claw 2' is eliminated. Such problems with grain culm retraction can be solved by moving the rotation shaft 20 of the idler wheel at the starting end of the grain culm conveyor to the left and right lifting cases 2A, 2.
B is unevenly distributed by a distance L to the right of the center C in the direction of travel, and the rotating shaft 3 of the sprocket at the starting end of the conveyance of the stock conveyor chain 8 is moved slightly to the left of the center C in the direction of travel. This can be prevented even more effectively by making it unevenly distributed by a distance of .

As described above, the grain culm conveying device for a combine harvester according to the present invention includes a grain culm conveying body disposed between the rear of the pulling device in which the lifting cases each having a pulling claw are arranged in parallel and the feed chain on the threshing machine side. In a combine harvester configured in upper and lower stages for conveying the tip side and the stock end side, and pivoted so that the conveyance starting end side can be tilted up and down, the rear surface of the both lifting cases is provided with a structure that extends within the tilting range of the starting end side of the ear tip conveying body. The guide plates along the feed chain are fixed respectively, and a flat part is formed on the upper end side of the feed chain side guide plate to protrude laterally from the rear surface of the lifting case and cover approximately half of the length of the lifting claw. Not only does the generation of dead space between the board and the starting end of the grain culm conveyor eliminate the crossing phenomenon of grain culms, but the grain culms pulled up by the lifting case are moved to the central part of the parallel lifting case. This also eliminates the trouble of being pulled into the hoisting case, allowing for smooth combine harvester operation.

[Brief explanation of the drawing]

Figure 1 is a side view showing the pre-processing section of a combine harvester equipped with the grain culm conveying device according to the present invention, and Figure 2 is a side view showing the
Figure 3 is a view from arrow A in the figure, Figure 3 is a view from arrow B in Figure 1, and Figure 4 is a view from arrow B in Figure 1.
The figure is a front view showing only the main parts of the apparatus of FIG. 1. 2A, 2B... Lifting case, 2'... Lifting claw, 8...
Stock head conveyance chain (grain culm conveyor) that also serves as handling depth adjustment, 9... Ear tip conveyor (grain culm conveyor), 14A,
14B...Guidance plate, A...Plane section, B...Slanted surface section.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A grain culm carrier disposed between the rear of a pulling device in which lifting cases each having a pulling claw are arranged side by side and the feed chain on the threshing machine side. In the combine harvester, which is structured in two stages, upper and lower, so that the conveyance start end side can be tilted up and down, guide plates are fixed to the rear surfaces of both lifting cases, respectively, along the tilting range of the start end side of the ear tip conveyor. death,
A grain culm conveying device for a combine harvester, wherein a flat portion is formed on the upper end side of the feed chain side guide plate, projecting laterally from the rear surface of the lifting case and covering approximately half of the lengthwise direction of the lifting claw. 2. The grain culm conveying device for a combine harvester according to claim 1, wherein the rear side of the guide surface formed on the guide plate on the feed chain side is bent toward the conveyance direction of the ear tip conveyor.