JPH04316425A - Culm separating device of reaping harvester - Google Patents

Abstract

PURPOSE:To make reaping operation near levees possible by simple handling without butt cutting by human power, to reduce labor and to improve operation efficiency by automatically moving a culm separating tool of mobile type backward by increase in load applied to the tool. CONSTITUTION:A reaping part is exchangeable between a culm separating state wherein a culm separating tool 1 effectively functions by a moving means B and a state wherein culm separating action does not reach standing stem culm to be reaped, namely a nonseparating state wherein a reaper 3 is positioned at the front of the reaping part. When backward load is increased by thrust of the culm separating tool into a mound and the load exceeding a set value is discovered by a detecting means D and traveling mechanism is worked. Consequently, in reaping operation near levee, the culm separating tool is automatically changed into an attitude of culm nonseparating state when the culm separating tool is brought into contact with the bank of the levee so that the reaper is brought closer to the levee and reaping is made possible without moving the reaping part A backward by human operation with progress of a machine body.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weed cutting device for a cutting section of a cutting machine such as a combine harvester or a straw harvester.

0002

[Prior Art] Generally, at the tip of the reaping section of a reaping harvester, there is a
A weed dividing device such as a divider is provided that has the function of aligning planted stems and scooping up fallen stems. Traditionally, the weeding device has been fixedly attached to the cutting frame.

0003

[Problems to be Solved by the Invention] Because the weeding device is functionally placed at the most advanced position, it protrudes in front of the reaping device. Therefore, when reaping at the edge of a ridge with the reaping harvester facing the ridge, if the weeding device is not inserted into the ridge bank, the distance between the hem of the ridge and the cutting blade will be too far, and the planting at the edge of the ridge will be interrupted. The stems could not be harvested, and manual cutting was required. Some experienced pilots have the skill to avoid the need for manual mow-cutting by using a compound maneuver in which the cutting section is raised as it approaches the ridge; There is a disadvantage that the length of the reaping stem is uneven, and in any case, the weeding device that is originally intended to make the reaping work function well may interfere with the reaping function in some cases, as mentioned above. There was room for improvement. An object of the present invention is to provide a tool that enables both skilled and unskilled users to perform reaping work at the edge of a ridge in a better condition without impairing the weeding function.

0004

[Means for Solving the Problems] For the above-mentioned purpose, the present invention provides a weeding tool for weeding the roots of planted stems, and a weeding tool for weeding the roots of planted stems, and In a weeding device of a reaping/harvesting machine having a reaping section each equipped with a reaping device for reaping the base of the plant, a state in which the weeding action of the weeding device no longer reaches the planted stalks to be reaped by the reaping device. In addition to providing a moving means that can change the posture to a retracted position in which the weeding tool appears, a linking mechanism is provided that operates the moving means when a detection value of a detection means for detecting a backward load acting on the weeding tool exceeds a set value. The characteristic configuration is that The moving means may be a moving means that moves the weeding tool in parallel in the vertical direction, a moving means that moves the weeding tool up and down by swinging around the left and right axis provided at the rear thereof, or a moving means that moves the weeding tool immediately after that. When the moving means is operated, the front end of the weeding device moves to the lower end of the case, and the rear end of the weeding device moves upward. It is advantageous if the moving means are configured to be respectively displaced into a raised position.

[0005]

[Function] Regardless of the structure according to any one of claims 1 to 4, the weeding state in which the weeding tool effectively functions by the moving means, and the weeding action extending to the planted stem rods to be cut by the cutting device, are provided. The mowing section can be freely switched to a state in which the grass is completely removed, that is, a non-thinning state in which the mowing device is substantially positioned at the frontmost end of the mowing section. When the backward load increases due to the weeding tool thrusting into the embankment, etc., the detection means detects that the load exceeds the setting and activates the moving mechanism.
During reaping work at the edge of a ridge, when the weed cutting tool comes into contact with the ridge bank, the attitude is automatically changed to a non-thinning state, and the mowing section is manually evacuated in accordance with the progress of the machine. It is now possible to move the reaping device closer to the edge of the ridge and reap without having to reap. Therefore, the pillow cutting work becomes unnecessary,
In addition, there is no need to cut too high as the grass gets closer to the ridge, and the posture of the weeding implement is automatically changed to a non-thickening state, so mechanization of pillow cutting can be carried out regardless of the skill level of the operator. can. In the structures of claims 2 and 3, since the weeding tool can be raised and lowered, a scooping action occurs due to the upward movement of the weeding tool when it comes into contact with the ridge bank. Even if there is such a problem, it is possible to cut the stalks along the ridge from the base of the stock while still allowing good reaping. In the structure of claim 3, the weeding tool moves up and down by swinging, so depending on the setting of its swinging axis, if the bank surface of the ridge is a curved slope that is convex downward, the weeding tool can be moved up and down along the curved slope. The weeding tools can be raised and lowered, which can be expected to strengthen the weeding action. In the structure of claim 4, since the distal end of the weeding implement is a moving means that is displaced backward, it is convenient that when the moving means is activated while the machine body is moving towards the ridge, the backward load can be reduced or eliminated. be.

[0006]

[Effects of the Invention] Therefore, with any of the weeding devices according to claims 1 to 4, it is possible to easily operate the weeding device regardless of the operating skill level and perform good cutting work at the edge of the ridge. We were able to provide something with great advantages in terms of work efficiency.

[0007]

Embodiments Below, embodiments of the present invention will be explained based on the drawings. FIG. 3 shows the front part of a combine harvester, which is an example of a reaping and harvesting machine. The reaping section A of this combine harvester includes a weeding tool 1 that separates the base of the planted stalks, a pulling device 2 that raises the planted stalks, a reaping device 3 that reaps the base of the raised stalks, and a conveying device 5 for conveying the harvested stalks toward the threshing device 4.

As shown in FIG. 1, the weeding tool 1 is attached to a hydraulic lift cylinder 7 fixed to the tip of a reaping frame 6. That is, the movable rod 8, which is the movable side of the lifting cylinder 7, is placed downward and its tip is fastened to the attachment part 9 of the reaping frame 6, and the weeding tool 1 is bolted to the cylinder tube 10, which is the fixed side. By supplying and discharging hydraulic oil to and from the lifting cylinder 7, the weeding tool 1 is moved vertically in parallel with the lifting direction of the lifting device 2, thereby forming a moving means B. In addition, the tip of the cutting frame 6 is equipped with a strain gauge D (corresponding to a detection means), and when the weeding tool 1 comes into contact with a ridge or the like and a load is applied, the root of the weeding tool 1 A strain gauge D detects the deformation occurring at the tip of the reaping frame 6, and a comparator 22 that compares the detected value with a set value set by the load setting device 21, and a control device 23.
A linkage mechanism E is constructed by providing the following. When the detected value is larger than the set value, the linkage mechanism E functions to operate the control valve 24 to drive the lifting cylinder 7 and to swing the weeding tool 1 upward. Therefore, by adjusting the set value, the conditions for automatic raising of the weeding implement 1 upon contact with another object can be varied. The central one among the three lifting cylinders 7 is placed exactly at the left-right center position of the pair of lifting devices 2, 2, as shown in FIG.
extends forward through the gap between the loci of movement of the locking claws 13, 13 of the lifting devices 2, 2. The lifting cylinder 7 has an oil supply/drainage path 19 formed in the movable rod 8 and connected to a hose 20 routed through the inside of the pipe-shaped reaping frame 6.

Next, to explain the operation, as shown in FIG. 1, as the machine advances toward the ridge 11, the weeding tool 1 finally comes to collide with the ridge bank, and the strain gauge D due to this As a result of the detection, the link mechanism E is activated, and the weeding tool 1, which is in the use position (the state shown by the imaginary line), is quickly lifted higher than the ridge 11 relative to the advancing speed of the aircraft, and placed in the retracted position (the state shown by the solid line). As shown in Figure 2, the aircraft can be approached by advancing the aircraft until just before the lower part of the triggering device 2 touches the ridge bank. Further, while the linkage mechanism E is operating, the aircraft may be controlled to automatically stop advancing. In this way, the reaping device 3 reaps the ridge grain rods at the base of the stock. If the slope of the ridge bank is gentle, move the weeding tool 1 forward.
By raising the weeding tool, it is also possible to align the tip of the weeding implement with the slope of the ridge bank. Alternatively, the cylinder tube 10 may be attached to the reaping frame 6, and the weeding tool 1 may be attached to the movable rod 8, which is the original movable side. In this case, it is easy to route the hydraulic piping along the reaping frame 6.

[Another Embodiment]■ As shown in FIG. 4, a vertical frame 13 stands up from the front end of the reaping frame 6, and the weeding tool 1 is provided at the rear end of the vertical frame 13, which can swing up and down about the left and right axis P. A moving means B is provided with an elevating cylinder 7 for supporting and driving and moving. Then, a strain gauge D is attached to the base of the vertical frame 13.

■ As shown in FIG. 5, the reaping frame 6
An arm 15 that can swing freely about the left and right axis P is pivotally supported on a vertical frame 25 that is raised from the ground, and a guide rail 16 is attached to the tip frame 14 of the reaping frame 6.
A moving means B is constructed in which the upper end of the rear part of the mower is pivoted to the tip of the arm 15, a rotary roller 17 fixed to the weeding tool 1 is fitted into the guide rail 16, and the arm 15 can be driven and moved by the lifting cylinder 7. . Then, the strain gauge D is attached to the tip frame 14. A guide mechanism in which the front end of the weeding tool 1 is moved to the lower end of the case 18 of the pulling device 2 and the rear end of the weeding tool 1 is moved upward by the operation of the moving means B. C is constructed, and the weeding tool 1 is lifted along the lifting case 18.

In addition to a hydraulic cylinder, the means for driving and moving the weeding tool 1 may be constituted by an electric motor or a manual operation of a lever linked with a wire, and the detection means D may be constituted by using a load cell. Also good.

[0013] Although reference numerals are written in the claims for convenience of comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

[Figure 1] System diagram showing the structure of the transportation means and linkage mechanism

[Figure 2
] Action diagram showing the change in posture of the weeding tool at the edge of the ridge

[Figure 3] Plan view of the front part of the combine

[Fig. 4] Side view of main parts showing the first alternative structure of the transportation means

[Fig. 5] Side view of main parts showing a second alternative structure of the transportation means

[Explanation of symbols]

1. Weeding tool 2. Lifting device 3. Reaping device 18 Case A Reaping part B. Transportation means D Detection means E Linkage mechanism P Left and right axis

Claims (4)

[Claims] [Claim 1] A weeding tool (1
), and a reaping unit (3) each comprising a reaping device (3) for reaping the base of the planted stalk after the weeds have been divided by the weeding tool (1).
A) A weeding device for a reaping/harvesting machine, wherein the weeding device (1) is used as the weeding device (1), and the weeding action by this is the weeding device (3).
A moving means (B) capable of changing its posture to a retracted posture in which a state in which the planted stem rod is no longer able to be reaped is provided, and a detecting means (B) for detecting a backward load acting on the weeding tool (1) is provided. A weeding device for a reaping/harvesting machine, which is provided with a linkage mechanism (E) that operates the moving means (B) when the detected value of D) exceeds a set value. 2. The moving means (B) includes the weeding tool (
2. The weeding device for a reaping/harvesting machine according to claim 1, wherein the weeding device for a reaping/harvesting machine is configured to move the weeding device (1) vertically in parallel. 3. The moving means (B) includes the weeding tool (
2. The weeding device for a reaping/harvesting machine according to claim 1, wherein the weeding device for a reaping/harvesting machine is moved up and down by swinging around a left-right axis (P) provided at the rear of the weeding device. 4. The moving means (B) includes the weeding tool (
The case (1) of the triggering device (2) located immediately after the case (1)
8), and by the operation of the moving means (B), the front end of the weeding tool (1) is brought into contact with the lower end of the case (18). 2. The weeding device for a reaping/harvesting machine according to claim 1, wherein said weeding device (1) is configured such that rear end portions of said weeding tool (1) are respectively displaced to upwardly raised positions.