JPS6043926B2 - Grain culm conveyance device of threshing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shell culm conveying device for a threshing machine that clamps and conveys the root portion of a threshing shell culm.

A combine threshing machine includes a threshing handling barrel and a sorting device housed in a threshing frame, a culm conveying device provided along the threshing frame, and the like. FIG. 1 shows a side view and a plan view showing the starting end of a conventional shell culm conveying device. This will be explained based on the figure. The feed chain 2 of the shell culm conveying device 1 is connected to the sprocket 3 at the starting end, The starting end is supported by a chain rail 4 and tensioned by a tension sprocket 5.
Above this feed chain 2, the feed chain 2 is supported by a clamping rod 6 and is supported by a compression coil spring 7.
A clamping rod 8 biased toward the side is provided, and is configured to clamp and transport the root portion of the culm taken over from the transport device of the reaper between the feed chain 2 and the feed chain 2. On the other hand, during harvesting, if mechanical harvesting is not possible due to the surroundings or topography of the field, the grain must be harvested by hand and threshed by hand. In the case of this manual handling work, the culm must be held by hand and fed between the feed chain 2 and the clamping rod 8.
In this case, the tip of the clamping rod 8 gets in the way, so conventionally this part has been formed to be openable and closable so that it can be opened during manual handling. And the conventional switchgear is
As shown in the figure, a rotating clamping rod 9 pivotally attached to the tip of a clamping rod 8 is supported by a U-shaped fixed rod 10. During manual work, the fixed rod 10 is connected to a compression coil. After pulling against the elastic force of the spring 11 to disengage the rotating lever 9 and rotating the rotating lever 9 as shown by the chain line in the figure, the fixed rod 10 is released. By replacing the hole 12 with the hole 13, the rotating lever 9 was opened. In addition, this reverse procedure was necessary when the blockage occurred. As described above, the conventional opening/closing device requires the use of both hands for opening/closing operations, and it is difficult to align the fixed rod 10 with the holes 12, 13, which not only makes the operation troublesome, but also causes vibrations and other problems. There was a drawback that the fixing rod 10 could easily come off due to The present invention has been made in view of the above points, and includes a long hole in a rotating lever that is pivotally connected to the tip of the main lever.
Similarly, the tip of a fixed rod pivotally connected to the main lever is slidably engaged, and the spring member selectively urges the rotary lever in two directions: upright and situational. Accordingly, it is an object of the present invention to provide a culm conveying device for a threshing machine which makes it possible to extremely easily and reliably open and close a rotary lever with one hand when switching between mechanical handling and manual handling.

Hereinafter, its configuration and the like will be explained in detail with reference to embodiments shown in the drawings.

2 and 3 show a shell culm conveying device according to the present invention, FIG. 2 is a side view of a combine harvester implementing this, and FIG. 3 is a side view and a plan view of the starting end of the shell culm conveying device. .

In these figures, a threshing machine, generally designated by the reference numeral 23, is mounted on the running section 22 of the combine harvester 21, and within the threshing frame 24 of the threshing machine 23, a handling barrel for threshing (not shown) and a sorting barrel are installed. The device is stored. Further, a reaping machine, generally designated by reference numeral 25, is swingably supported at the upper end of a reaping frame 26 that supports the reaping machine, on a pivot provided at the front end of the threshing machine 23. And this reaper 2
Reference numeral 5 denotes a grass cutting body 28 which is located at the front end of the grass cutting rod 27 that extends forward from the lower end of the reaping frame 26 and which scrapes the culm in the field, and a trigger which is located behind it and which raises the inverted culm. A clipper-shaped cutting blade 30 for cutting the root of the erected culm is supported at the rear end of the dividing rod 27. Furthermore, above the cutting blade 30,
A threshing machine 2 captures the root and tip of the cut culm.
3, the root conveying device 31 and the tip conveying device 3
2 are mounted vertically and almost parallel to each other. A shell culm conveying device, the entire body of which is indicated by reference numeral 33, is mounted on the side of the threshing frame 24.

The feed chain 34 of this culm conveying device 33 is stretched between a sprocket 35 provided close to the terminal end of the root conveying device 31 and a rear sprocket 36, and the feed chain 34 of the upper running portion of the culm conveying device 33 is stretched between a sprocket 35 provided close to the terminal end of the root conveying device 31 and a rear sprocket 36. Attach the starting end to the chain rail 37
and is tensioned by a tension sprocket 39 biased by a tension spring 38. Above the feed chain 34, a main clamping rod 40, which is divided into a plurality of parts in the longitudinal direction and has a U-shaped cross section, clamps the upper end of a support rod 41 pivotally attached to the main clamping rod 40. Supported by the rod 42, the feed chain 34
It is constructed along the upper running end, and this main rod 4
0 is connected to the feed chain 3 by the compression coil spring 43.
It is biased toward the 4th side. At the tip of the main lever 40, there is a rotating lever 4 whose cross section is similarly U-shaped.
4 is pivoted so that it can stand up or fall down freely, and on its top,
A sliding guide 46 having a long hole 45 is integrally provided in a protruding manner.

Further, a rod holder 47 is protruded from the upper surface of the tip of the main holder 40 in the vicinity of the pivot portion of the rotary holder 44, and the rod holder 47 has a saw-shaped shape. A fixed rod 48 whose distal end is slidably engaged with the elongated hole 45 of the rotary lever 44 is rotatably pivoted at the other end. A spring hook 49 is provided on the fixed rod 48 and protrudes from the rod receiver 47 in a direction opposite to the extending direction of the fixed rod 47. A tension spring 51 is stretched between the spring hook 50 protruding forward from the spring 42. By rotating the fixed rod 48 in a substantially perpendicular direction as shown by the solid line and the chain line in FIG. The free end side is configured to move in a circular arc and cross over the pivot point of the fixed rod 48, so-called dead center. Therefore, the rotating pincer rod 44 is biased by the tension spring 51 via the fixed rod 48 so as to selectively restrict its rotation in two positions: the upright position and the inverted position. In the combine harvester 21 configured as described above, the culm cut by the cutting blade 30 of the reaper 25 changes its posture from a vertical state to a horizontal state while being transported by both transport devices 31 and 32. , the root portion is taken over to the feed chain 34, and the tip portion is supplied to the handling chamber of the threshing frame 24.

The culm, which is conveyed with its root portion held between the feed chain 34 and the main lever 40, is threshed by a handling barrel in a handling chamber. During such reaping and threshing work, the rotating lever 44 is inverted as shown by the solid line in FIG. Forced.

Therefore, the rotary lever 44 is biased in the inverted direction and swings against the tensile force of the tension spring 51 depending on the number of culms to be taken over, so that the culms can be taken over smoothly. It is done. When performing the manual work mentioned above,
When the rotating lever 44 is rotated clockwise in Fig. 3a,
As one end of the fixed rod 48 slides within the elongated hole 45, the tension spring 51 is pulled; however, when it passes the dead center, the tension spring 51 urges the fixed rod 48 clockwise, and the rotating lever is turned off. 44 stops at the position shown by the chain line in the figure, that is, at the position where one end of the fixed rod 48 reaches the upper limit of the elongated hole 45.

In this case, since the rotating armrest 44 is biased in the upright direction, it will not fall down due to its own weight. Also, when the rotating lever 4 is turned upside down after manual handling work, the rotating lever 4
4 can be easily turned upside down just by rotating with one hand. As is clear from the above explanation, according to the present invention, in the husk conveying device of the threshing machine, the long hole of the rotary lever pivoted at the tip of the main lever is similarly connected to the main lever. The distal end of a fixed rod pivotally connected to the distal end is slidably engaged, and the rotating lever is selectively biased in two directions, erect and inverted, by a spring member. This makes it possible to easily raise or lower the rotating pincer with one hand when switching between mechanical work and manual work. It does not rotate under its own weight, so it can be held securely, and when it is inverted, it is given elasticity by the spring member, so it will not be damaged by the passage of the culm.

[Brief explanation of drawings]

FIG. 1 is a side view and a plan view showing the starting end of a conventional shell culm conveying device for a threshing machine, FIGS. 2 and 3 show a shell culm conveying device for a threshing machine according to the present invention, and FIG. FIG. 3 is a side view of a combine harvester in which this has been carried out, and a side view and a plan view of the starting end of the shell culm conveying device. 23... Threshing machine, 33... Hull culm conveying device, 34... Feed chain, 40... Main lever, 44... Rotating lever, 45... Long hole, 4
8... Fixed rod, 51... Tension spring.

Claims (1)

[Claims] 1. A rotating lever that is pivotally connected to the tip of a main lever that is supported along the upper running end of the feed chain so as to be able to rise and fall; A fixed rod whose tip is slidably engaged with an elongated hole provided in the rod, and one end supported by the fixed rod, and the rotating rod can be raised and lowered at both ends of rotation of the fixed rod. A grain culm conveying device for a threshing machine, characterized in that it is provided with a spring member that selectively biases the grain in a direction.