JPH02138916A - Grass divider of grain straw reaping device - Google Patents

Abstract

PURPOSE:To prevent the breakage or catching miss of grain straws by transferring the lower portion of a grass-dividing device in the forward direction to change the grass-dividing device into a moderately tilted posture and thereby reducing the grass-dividing resistance thereof in response to the magnitude of a downward load when the downward load is applied to a grass-dividing plate. CONSTITUTION:In a load-free state a grass-dividing plate 5 is energized into a sharply tilted posture with a tension spring 20 and into a backing position wherein a grass-dividing tip metal bar 4 is inserted into a grass-dividing pipe 16. When a combine is driven in the forward direction to start a reaping work, loads caused by fallen grain straws are applied to the grass-dividing plate 5. The grass-dividing plate 5 is consequently rotated on a point P to take a moderately tilted posture and a grass-dividing tip metal bar 4 is simultaneously slided in the forward direction to become in a projected state. Since the tilting angle of the grass-dividing plate 5 and the longitudinal position of the grass-dividing tip metal bar 4 are changed in response to the change of the loads, the grass- dividing resistance is reduced and the breakage and catching miss of the grain straws can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a sowing body of a culm reaping device suitable for a harvester such as a combine harvester.

[Prior art]

Conventionally, this type of weeding body has been designed to change its front and back position and inclination posture using various interlocking systems in order to prevent it from penetrating into the field, to cope with the harvesting of fallen culms, etc. is being attempted.

[Problem to be solved by the invention]

When reaping a lodging culm, it is desirable to lower a sharply protruding weeding body at the front of the reaping section to a height that almost touches the ground. If the vehicle moves forward in this state, the weed cutting body will scoop up the fallen culms from below and separate the weeds. but,
If the slope of the cutting plant remains steep and the lodging husk culm is pushed apart, excessive force will be applied to the husk culm, causing problems such as culm breakage and stock removal. To solve this problem, the inclination angle of the grass divider should be made gentler depending on the load on the grass divider, and furthermore,
It is desirable to position the tips of the cuttings forward. For this reason, methods using various interlocking systems, such as electrical control and hydraulic control, have been attempted in the past.

However, the electric control, hydraulic control, etc. in such conventional techniques are expensive compared to their effectiveness, and are not commercially viable.

[Means to solve the problem]

The present invention takes the following technical means to solve the problems related to -. That is, at the front of the traveling 11 body 1,
In a device equipped with a cutting section 3 having a grass cutting body 2, the grass cutting body 2 includes a grass cutting tip 4 that can be moved back and forth with respect to the cutting section 3, and a lower portion pivoted to the grass cutting tip 4. ” - a grass dividing plate 5 that can be rotated downward, and the grass dividing plate 5 is
When a downward load is applied to this, the lower part moves forward and changes to a gently inclined position.

〔Effect of the invention〕

The effects and effects of the present invention are as follows.

When the combine is moved forward, the fallen culms are scooped up from below by a weed cutting body provided at the forefront of the cutting section and are weeded. After the husk is raised by a pulling device, it is cut by a cutting blade device and supplied to a threshing machine.

During this work, there is a large amount of lodging shell culms, and especially when the shell culms are wet, a large load is placed on the weeding board.

At this time, depending on the magnitude of the load, the weed cutting board assumes a gently inclined posture to reduce the weeding resistance, thereby preventing the shell culm from breaking or falling off. This effect becomes more reliable as the inclination angle of the grass divider becomes gentler and the tip of the grass divider protrudes forward.

Since the plant according to the present invention has achieved these functions with a relatively simple structure, it has the advantage that the cost is low and the risk of failure is extremely low.

〔Example〕

An embodiment of the present invention will be explained by illustrating a self-explanatory type combine harvester.

The threshing machine 6 has a chassis 8 having a running device 7 based on a track belt.
Mounted on the top side. A reaping section 3 is provided on the front side of the threshing machine 6 so as to be movable up and down with respect to a chassis 8 by means of a hydraulic cylinder 9.

Reference numeral 10 denotes a supply conveyance device that takes over and supplies the harvested husk from the reaping section 3 to the threshing machine 6. Reference numeral 11 denotes a control unit including a steering clutch lever 12, a seat 13, and the like.

The reaping section 3 includes a grass cutting body 2, a pulling device 14, a cutting blade device 15,
It is constituted by a scraping and conveying device (not shown).

Next, the structure of the branch 2 will be explained.

The weeding tip 4 is loosely fitted into the weeding pipe 16 of the cutting section 3 and is slidable in the forward direction. P near the tip of this cutting tip 4
The grass divider plate 5 is pivotally mounted using as a rotation fulcrum. The free ends of an arm 17 having one end pivotally connected to the back surface of the grass dividing plate 1 and an arm 18 having one end pivotally connected to the upper part of the grass dividing tip 4 are pivotally connected to each other to form a link structure. Further, an arm 1 having one end pivotally connected to a part of the weeding pipe 16''
The other end of the arm 9 is pivotally connected to the intermediate portion of the arm 18. 20
is a tension spring extending between the middle part of the arm 18 and the middle part of the arm 19.

With the above configuration, when no load is applied to the weeding board 5, the tension spring 20 causes the weeding board 5 to take a steeply inclined position (J biased) as shown in FIG. 4 enters into the weeding pipe 16 and is oriented so that it is in the retracted position.

When the traveling device 7 of the combine is driven forward to start reaping work, a load is applied to the grass dividing plate 5 due to the lodging culms. Then, as shown in Fig. 3, against the tensile force of the spring 20,
The grass dividing plate 5 rotates around P and assumes a gently inclined position, and the grass tip 4 slides forward to become in a protruding state. The inclination angle of the grass dividing plate 5 and the front and back position of the grass dividing tip 4 change according to changes in load.

In FIG. 4, the wire 21 is passed from the tip of the weeding tip 4 to a part of the pulling device 14 in a slack state. By shaking this wire 21 by hand, the operator can remove weeds, straw M1, etc. adhering to the grass dividing board 5.

Furthermore, FIG. 5 shows the control section 11 of the combine harvester as seen diagonally from behind. A fuel tank 23 is provided below the step 22 on which the worker puts his or her feet.

A part of the step 22 and a part of the side machine wall 24 are configured so that they can be integrally rotated to the side of the machine body. With this configuration, the side machine W24 can be
Part of the scaffolding 25 is used for workers to get on and off the control section.
become. Furthermore, since the refueling port 26 of the fuel tank 23 appears, it is possible to refuel from the refueling tank at the scaffold 250, which improves work efficiency.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a side view of the combine, Fig. 2 is a side view of the main parts, Fig. 3 is a side view of the main parts, and Fig. 4 is a side view of the combine. Figure 5 is a perspective view. 1... Traveling vehicle body 2. Grass dividing body 3... Reaping part 4... Grass cutting tip 5... Grass dividing board

Claims (1)

[Claims] (1) A reaping section 3 having a weeding body 2 at the front part of the traveling vehicle body 1
The weeding body 2 includes a weeding tip 4 that can be moved back and forth with respect to the cutting section 3, and a section whose lower part is pivotally connected to the weeding tip 4 and can be rotated in the vertical direction. The culm cutting device is characterized in that the grass dividing plate 5 is configured such that when a downward load is applied to the grass dividing plate 5, the lower part of the grass dividing plate 5 can move forward and change to a gently inclined posture. Grass plant.