JPS61282011A - Combine harvester reaping device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a reaping device for a combine harvester.

Prior Art and Problems to be Solved by the Invention A grain culm reaping device is provided so as to be able to roll left and right with respect to the traveling vehicle body, and the height of this reaping device from the ground is detected by a cutting height sensor, and the grain culm reaping device is installed vertically relative to the traveling vehicle body. In a combine harvester that automatically controls the cutting height, the further the cutting height sensor is moved away from the position opposite the rotation center of the cutting device, the larger the gap with the ground becomes, and the vertical movement range becomes wider. Therefore, it is difficult to accurately detect the height above the ground, and the reaping device swings up and down significantly due to left and right rolling, making it difficult to automatically control the cutting height.

Therefore, the present invention provides a cutting height sensor at a position substantially opposite the rolling center of the grain culm reaping device to detect the height above the ground, thereby accurately controlling the vertical movement of the reaping device relative to the traveling vehicle body.

Means for Solving the Problems The present invention provides a grain culm reaping device (2) which is provided to be able to freely roll left and right with respect to a traveling vehicle body (1), and is provided with a grain culm reaping device (2) at a position substantially opposite the rolling center (3) of the grain culm reaping device (2). The reaping device for a combine harvester is provided with a cutting height sensor (4) that detects the height above the ground and controls the vertical movement of the traveling vehicle body (1).

Effect of the Invention When the traveling vehicle body (1) is run, the traveling vehicle body (1) tilts left and right due to the inclination of the field and unevenness of the ground, but the grain culm reaping device (2) tilts left and right around the rolling center (3). It rolls and travels while remaining almost horizontal to the ground. The height of the grain culm reaping device (2) from the ground is detected by a cutting height sensor (4) installed at a position substantially opposite the rolling center (3), and the grain culm reaping device (2) is ) is raised and F is lowered.

Effects of the Invention Since the cutting height sensor (4) is provided so as to be able to roll left and right with respect to the traveling vehicle body (1) and is provided at a position almost opposite to the rolling center (3) of the grain culm reaping device (2), the grain culm reaping The height above the ground of the device (2) can be detected at the position where the fluctuation in the height above the ground is the smallest, and the cutting height can be accurately controlled automatically without the grain culm reaping device (2) swinging up and down significantly. At the same time, the reaping performance can be improved.

Embodiment In the illustrated example, a threshing device (5) is mounted on the upper part of the traveling vehicle body (1), a traveling device (6) is mounted on the lower part, and a grain culm reaping device (2) is mounted on the front part. ) is suspended.

A pedestal (7) is provided at the front of the threshing device (5), and a transmission frame (9) having an input shaft therein and a bevel gear case (8) at one end is installed horizontally on the pedestal (7). It is configured to be rotatable with respect to the pedestal (7).

A swing frame (101) installed in parallel with the transmission frame (9).
A rotating gear case (lυ) is provided, the rotating gear case (1) is rotatably fitted to the bevel gear case (8), and the swinging frame (1 is a bevel gear case (8)). 8) is configured to be rotatable.

One side of the swing frame +101 and the transmission frame (9)
) and a support plate C23) that extends downward from the hydraulic cylinder (C23), and on the other side, a reaping frame (13) is installed diagonally downward and forward, and a reaping frame (13) is installed at the lower end of this reaping frame (+3). is provided with an interlocking case 04 extending in the width direction of the machine body in a T-shape.

On the interlocking case (14), there is a horizontal sensor (not shown) (for example, a mercury sensor) that detects the tilt in the left and right direction.
A solenoid valve (not shown) is switched according to the detection result of this horizontal sensor, and the hydraulic pump performs switching such as oil supply, oil drainage, and shutoff to the hydraulic cylinder (121). Case (+11
The fitting portion between the bevel gear case T81 and the bevel gear case T81 is the rolling center (3), and the tilt is maintained in a horizontal state by rolling in the left and right direction.

A plurality of weeding rods (1!9) are protruded forward from the interlocking case 041, and each of the weeding rods (19 has a weeding body (Ie
" is provided, and a lifting device (1
7) The upper end is erected with the upper end inclined slightly backward. In addition, a clipper-shaped cutting blade (Ill) is supported at the rear end of the grass dividing rod (1!9), and a scraping device is provided above the cutting blade 11fl, and a scraping device is installed above the rear portion of the scraping device. is equipped with a grain conveying device.

An intermediate shaft is installed inside the swing frame +11, and this intermediate shaft is interlocked with the input shaft inside the transmission frame +91 via a bevel gear inside the bevel gear case (8) and a bevel gear inside the rotating gear case 011. The configuration is such that The transmission shaft inside the interlocking case (141) is interlocked with the intermediate shaft via the reaping drive shaft inside the reaping frame (13), and the transmission shaft is connected to the lifting device 0'' from the transmission shaft.
II, the cutting blade O1, the raking device, the conveying device, etc. are configured to be linked to each other.

The bevel gear case (II) and the rotating gear case (
A cutting height sensor (4) is provided on the front side of the cutting blade (19) at a position substantially opposite the rolling center (3) to the cutting blade (19).

The cutting height sensor (4) has an actuator that extends rearward and obliquely downward and is pivotably supported around the left-right axis of the sensor box. A switch is provided in the sensor box that is linked to the up and down movement of the actuator, and is electrically connected to a solenoid valve (not shown), and the solenoid valve is switched to the upward and downward sides by the up and down movement of the actuator. A hydraulic system (19) is operated to move the grain culm reaping device (2) up and down around the transmission frame (9) to control the height above the ground at a constant level.

At a position substantially opposite to the rolling center (3), there is a direction control sensor 12G for sensing the presence or absence of uncut culms at the tip of one grass rod, and a direction control sensor 12G for sensing the presence or absence of uncut culms at the tip of one, and an interlocking case 141 for sensing the presence or absence of grain culms. Each grain culm sensor (21) is provided.

The direction control sensor 2G has an actuator that protrudes left and right and is pivotally supported to be able to swing around the vertical axis of the sensor box, and is normally biased to a posture perpendicular to the grain culm conveyance path. It is constructed so that it swings backward when it comes into contact with the base of the culm. Further, a switch is provided in the sensor box that is linked to the rocking of the actuator, and a running conversion mechanism is provided that corrects the traveling direction of the running vehicle body (1) to the left or right when the actuator comes into contact with the stock base of the grain culm. The configuration is such that the output is output to .

The grain culm sensor (21) is rotated backward by the suppression of the grain culm by protruding an actuator into the grain culm conveyance path, and when it senses that there is no grain culm to be harvested, the actuator turns on the hydraulic device (FJ). The electric structure is such that the grain culm reaping device (2) is raised by operating the grain culm reaping device (2).

(2δ is the cockpit, Q4 is the hydraulic lever.

When each part is transmitted with power and the solenoid valve is switched to the lowering side using the hydraulic lever Q4, the hydraulic pressure of the hydraulic system (FJ) is released, the grain culm reaping device (2) is lowered, and the cutting height sensor (4) is grounded. When the traveling vehicle body (1) is moved forward, the grain culm is pushed aside by the cutting body, and the direction control sensor wire detects the stock base of the grain culm, and then the direction conversion mechanism is interlocked and the grain culm is pushed aside by the grain stalk (1).
), the direction of movement of the grain is adjusted to the left and right, and the grain culm is raised by the raising device (I71), raked by the raking device, and harvested by the cutting blade (old).

This harvested grain culm is transported by a transport device and is transported to a threshing device +
51, where it is threshed and sorted.

When the traveling vehicle body (1) tilts to the left or right while traveling, the horizontal sensor detects this tilt, and depending on the detection result, switches the solenoid valve to switch the flow of oil from the hydraulic pump to the hydraulic cylinder α, oil drain, etc. Then, the grain culm reaping device (2) rotates around the rolling center (3), and when the left and right inclination is corrected, the solenoid valve is switched to the cut-off side and the grain culm reaping device (2) rotates around the rolling center (3).
) remains horizontal.

When the cutting height sensor (4) senses a concave part while sliding on the soil surface and swings downward, it switches the solenoid valve to the lowering side and drains the oil from the hydraulic system (9) to operate the grain culm reaping device (2). lower it,
Conversely, when a convex part on the soil surface is detected and the soil swings, the solenoid valve is switched to the upward side, and oil is sent to the hydraulic system t (the seagull) to raise the grain culm reaping device (21).The cutting height sensor ( When the sensor (4) does not detect irregularities on the soil surface, the solenoid valve is switched to the shutoff side and the vertical movement of the grain culm reaping device (2) is fixed.In this way, the cutting height sensor (41) Device (2
) is controlled to a constant height above the ground.

When the grain culm sensor t21) detects that there is no grain culm to be harvested, the solenoid valve is switched to the rising side and the grain culm reaping device (2) is raised.

Directional control sensor rm and grain culm sensor c! 1) is provided at a position almost opposite the rolling center (3), so even when the grain culm reaping device (2) is rolling from side to side, it comes into contact with the tip of the grain culm, making sensing inaccurate. Since it can come into contact with the base of the stock, it can be sensed accurately and automatic control can be carried out reliably and stably.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, with FIG. 1 being a front view and FIG. 2 being a side view of the front part of the combine harvester. In the figure, code (1) is the traveling vehicle body, (2) is the grain culm reaping device,
(31 indicates the rolling center, and (4) indicates the cutting height sensor.

Claims (1)

[Claims] The height of the grain culm reaping device (2) from the ground is detected at a position substantially opposite the rolling center (3) of the grain culm reaping device (2), which is provided so as to be able to roll left and right with respect to the traveling vehicle body (1), and the grain culm reaping device (2) is mounted so as to be able to roll left and right with respect to the traveling vehicle body (1). A cutting height sensor (4) that controls up and down the vehicle body (1)
) is a combine harvester reaping device.