JPS6114766B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a culm cutting device that is provided with a cover that opens and closes a discharge port for discharging cut culms for safety, etc., and the cutting operation is performed while the discharge port is closed with the cover. The purpose of the present invention is to realize a culm cutting device that can prevent this from occurring.

For this reason, the following technical measures were taken.

That is, the cover 3 opens and closes the discharge port 2 for discharging the cut culm of the culm cutter 1, and the culm cutter 1
Clutch device 4 that turns on and off the transmission power to
When the discharge port 2 of the cover 3 is opened and closed, the operation of the clutch device 4 from "off" to "on" is disabled, and when the discharge port 2 of the cover 3 is opened and closed, the clutch device 4 is disabled. The structure of the culm cutting device is provided with a check device 5 configured to enable the clutch to be turned on and off.

To explain one embodiment of the above invention, the culm cutter 1 has a pair of scraping rolls 7 and 8 on the upper part that fold the culm in half and scrape it into the cutting chamber 6 below, and The cutter is comprised of a so-called cylinder cutter consisting of a fixed blade 9 and a rotating cutting blade 11 that rotates together with a rotating shaft 10. Reference numeral 2 denotes a discharge port of the culm cutter, which communicates with the cutting chamber 6 and projects slightly rearward. This culm cutter 1 is detachably attached to the rear of a threshing device 12 that is a part of a combine harvester.

The cover 3 is attached to the shaft 13 on the machine wall of the culm cutter 1.
The discharge port 2 is configured to be rotatable about the shaft 13 to switch between a closed state and an open state.

The clutch device 4 serves as a clutch for turning on and off the power to the threshing device 12 and a clutch for turning on and off the power to the culm cutter 1. That is, a clutch lever 16 is provided on the operation box 14 and supported by a shaft 15 so as to be movable up and down, and the threshing clutch is turned on and off via a wire 17 by rotating the clutch lever in the up and down direction (in the direction of the arrow). are doing.

Power is transmitted to the culm cutter 1 through belts, gears, etc. from a PTO shaft 12a that rotates under the power of a threshing device 12, and the rotating shaft 10 and raking rolls 7 and 8 are driven to rotate. It is configured to do so.

Therefore, by operating the clutch lever 16 in the direction of arrow A, the threshing clutch is engaged via the wire 17.
As the threshing device 12 is driven, the culm cutter 1 is operated, and the threshing clutch is disengaged by operating in the opposite direction of arrow A, and the threshing device 12 and the culm cutter 12 are operated.
operation will stop.

The restraint device 5 is an inner wire 18 in the illustrated example.
and an outer wire 19, the ends of the outer wire 19 are fixed to the wall of one culm cutter and the wall of 14 operation boxes, and one end 18a of the inner wire 18 is fixed to the cover 3. At the same time, the other end 18b is made rigid so that it follows the movement trajectory of the clutch lever 16, and when the cover 3 is closed, the inner wire 1
8 is pushed in the direction of arrow B, and the other end 18b intervenes in the movement locus of the clutch lever 16, inhibiting the movement of the clutch lever 16 from the disengaged direction to the inward direction (arrow A) (Fig. 4A). state), when the cover 3 is opened, the inner wire 18 is pulled in the opposite direction of arrow B, and the other end 18b is pulled toward the clutch lever 16.
the clutch lever 16.
is configured to be movable (state shown in FIG. 4B).

In the configuration of the above example, when starting work, first, when the cover 3 is rotated in the upward (arrow C) direction about the shaft 13, the discharge port 2 of the culm cutter 1 is opened. At this time, the inner wire 18 is pulled in the direction of the arrow as shown in FIG. Next, when the clutch lever 16 is moved in the direction of arrow A, power is transmitted to the threshing device 12 via the threshing clutch, and at the same time, the PTO
Power is transmitted to the rotary cutting blade 11 and the scraping rolls 7 and 8 through shafts, belts, gears, etc., causing them to rotate.

When the combine harvester is moved forward and the work is carried out, the culm discharged from the threshing device 12 reaches the lower cutting chamber 6 in a state of being folded in half by the scraping rolls 7 and 8, where it is connected to the fixed blade 9. The culm is cut short by the cooperation with the rotating cutting blade 10, and the cut culm is
It is discharged outside the machine from the discharge port 2. When performing such cutting work on the culm, even if the operator attempts to cut the culm without opening the cover 3, that is, with the outlet 2 of the culm cutter 2 closed with the cover 3,
The clutch lever 16 is restricted from moving in the direction of arrow A by the other end 18b of the inner wire 18, as shown in A in FIG. 4, so that the discharge port 2 is closed. This prevents the culm cutter 1 from operating, and therefore prevents the culm from clogging in the cutting chamber 6 of the culm cutter 1 and damage to the rotary cutting blade 10, fixed blade 9, etc. caused by this. be. Furthermore, it is safe because the threshing device 12 is not operated either.

Note that the culm cutter 1 is not limited to a cylinder cutter, and as shown in FIG.
A multi-row disc type cutter (disk cutter) may be used, and in this case, the cover 3 may function as a gutter that guides the cut culm downward.

Further, the restraint device 5 may be electrically operated using a limit switch or the like, and it goes without saying that the structure is not limited to the structure of this embodiment.

Since this invention is configured as described above, it is possible to prevent the discharge port 2 of the discharge culm cutter 1 from being operated while the discharge port 2 of the discharge port 2 is closed with the cover 3, and furthermore, the cover 3 is prevented from operating the discharge port 2 of the discharge port 2 of the discharge culm cutter 1. When the cover 3 is in the open state, even if the clutch device 4 is operated, the cover 3
Since the cover 3 and the clutch device 10 are not operated at all, in other words, the cover 3 and the clutch device 10 are in a non-interlocking relationship. This has the effect of improving durability.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a side view, Fig. 2 is a rear view, Fig. 3 is a partial side sectional view, Fig. 4 A and B are a plan view of main parts, and Fig. 4 is a plan view of the main part. FIG. 5 is a partial rear view showing another embodiment. In the figure, 1 is a culm cutter, 2 is a discharge port of the culm cutter, 3 is a cover, 4 is a clutch device, and 5 is a culm cutter.
indicates a restraining device.

Claims (1)

[Claims] 1. A cover 3 for opening and closing the discharge port 2 for discharging the cut culm of the culm cutter 1, and a clutch device 4 for turning on and off the transmission force to the culm cutter 1. When the discharge port 2 of the cover 3 is closed, the clutch 4 cannot be operated from "off" to "on", and when the discharge port 2 of the cover 3 is open, the clutch of the clutch device 4 is disabled from "on" to "off". A culm cutting device provided with a check device 5 configured to enable operation.