JPS5918008B2 - Harvester crop sensor structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Summary of the Invention The present invention relates to a harvester equipped with a reaping section such as a binder, a harvester 1, or a combine harvester, in which a divider tip provided in the reaping section and a rear reaping section are This invention relates to a crop sensor structure in which a sensor bar is linked to a reaping latch, the tip of which faces the stem culm introduction path between the blade and the sensor bar whose base is pivotally supported on the side machine frame of the reaping section, and in particular, The base of a link is pivotally supported at the tip of an arm integrally attached to the base end of the sensor bar, and the tip of the link elastically slides against the reaping latch via a spring supported by the link exterior stopper. This invention relates to a crop sensor structure that is freely inserted.

Conventional technology In recent years, a prime mover mounted on a harvester is used to drive the working parts, and a tension pulley clutch is provided in the endless belt power transmission mechanism.By manually disengaging this clutch, the prime mover power can be used for work such as cutting blades. An automatic operation control device for a reaping section is being developed in which the tension pulley clutch is controlled by a crop sensor placed in front of the cutting blade of the working section.

This crop sensor is moved in contact with the culm of crops such as rice planted in the field, detects the crop, and drives the reaping unit, etc., and does not detect the culm of the crop once the lower row of operations in the field has finished reaping. Therefore, the drive operation is stopped to prevent unnecessary consumption of power.

However, in conventional crop sensors, the tip faces the stem culm introduction path between the divider tip installed in the reaping section of the harvester and the rear cutting blade, and the base of the crop sensor faces the stem culm introduction path between the divider tip installed in the reaping section of the harvester and the rear cutting blade. A sensor bar pivotally supported by the frame is linked to the reaping latch.

Although there are problems with the conventional technology, the above-mentioned conventional crop sensor structure has the following problems:
If the tension pulley clutch responds as it is in response to the amount of rotation of the sensor bar, there is a drawback that not only the suppressing tension fluctuates, but also the power is transmitted intermittently due to vibrations and the like.

As a result, the prime mover and other driving parts operate intermittently, which increases the load and shortens the service life.

OBJECT OF THE INVENTION The purpose of the present invention is to solve the problems of the crop sensor structure of the harvester based on the above-mentioned prior art, and to provide a technology that will benefit the field of use of the harvester in the agricultural industry by preventing vibrations from being transmitted to the reaping latch. The present invention aims to provide an excellent crop sensor structure.

Structure of the Invention In order to solve the above-mentioned problems, the structure of the present invention, which is in accordance with the above-mentioned object and has the gist of the above-mentioned claims, is to provide a stem culm introduction path through which a harvester travels from the divider tip of the reaping section to the cutting blade. When the tip of the sensor bar, whose base is pivoted to the machine frame at a lateral position, comes into contact with the crop stem culm in the introduction path and rotates, the tip of the arm provided at the base end of the sensor bar touches the tip of the arm. When the pivoted link is slid and the mowing latch into which the tip of the link is inserted is pressed via the bullet supported by the link exterior stopper, the power of the prime mover is connected to the drive unit and the mowing blade is driven. Reaped by a driven cutting blade,
However, even if the sensor bar is vibrated by the introduced stem culm during levering, the link pivoted to the arm provided at the base end of the sensor bar will elastically slide via its armored shell, causing the sensor bar to vibrate. It takes technical measures to absorb and adjust vibrations.

Embodiment - Configuration Next, one embodiment of the present invention will be described below based on the drawings.

FIG. 1 shows a binder as a harvester, in which a reaping section 1, a horizontal conveyance section 2, a binding device 3, and a prime mover 4 are mounted on drive wheels 5 from the front, and 6 is a steering wheel.

The power of the prime mover 4 not only drives the drive wheels 5 but also connects the drive section 7 of the reaping section 1 and the conveyance section 2 to a power transmission mechanism, such as an endless belt installed between the drive pulley and the main shaft pulley of the drive section 7. 1 drive unit through 8.

The drive unit 7 is interlocked to drive the cutting blade 9 in the reaping unit 1, the stem culm pulling device 10, the conveyance chain 11 in the horizontal conveyance unit 2, and the binding machine 3, respectively.

12 is a crop sensor forming the gist of the present invention, and the crop sensor 12 is connected to the divider 16 of the reaping section 1.
The tip is facing the stem culm introduction path B between the tip and the rear cutting blade 9, and the base is the pivot point 1 of the side machine frame of the cutting section 1.
The sensor bar 12' is provided with a cantilever-shaped sensor bar 12' which is pivotally supported by the sensor bar 12'.

An arm 12b is provided at the base of the sensor bar 12', and the base of a link 13 is pivotally supported at the tip of the arm 12b. It is inserted through the base of a link arm 14a serving as a latch and is slidable.

Therefore, a stopper is attached to the link 13, and the link 13 is provided between the stopper and the base of the link arm 14a.
A spring 22 serving as a bullet is mounted around 3 and is interposed with a set length.

A clutch 14 serving as a reaping latch provided at the tip of the link arm 14a is pressed against the endless belt 8.

Embodiment - Operation In the above configuration, when the harvester moves forward, the planted stem culm A' is introduced between the dividers 16 along the introduction path B and comes into contact with the tip 12a of the sensor bar 12', as shown in FIG. The sensor bar 12' is moved from the S position to the R position by
, rotates the arm 12b.

Then, the link 13 slides toward the link arm 14a, presses the spring 22, and moves the link arm 14a.
The clutch 14 of the link arm 14a presses the endless belt 8 as shown by arrow P.

When the endless belt 8 is pressed in this manner, the power of the prime mover 4 is connected to the drive unit 7, so that the cutting blade 9 driven by the drive unit 7 is guided by the guide spring plate 17 to the planted stem culm A. As a result, the reaped planted stem culm A is
It is supplied to the binding machine 3 by a conveyor chain 11.

Therefore, at the next moment from the solid line position in Figure 3, the stem culm A is
The sensor bar 12' is removed from the sensor bar 12', and the sensor bar 12' is returned as indicated by the arrow Q to the dotted line position of the stem culm A' to be introduced next.

At this time, even if the slide operation of the link 13 when the sensor bar 12' returns from R to S causes vibrations due to the sequentially supplied stem culm A', the spring 22 maintains sufficient tension on the link arm 14a at the S point position. When the sensor bar 12' reaches the R point, the spring 2
2 is charged with the pressing force of the clutch 14, and the pressing tension of the clutch 14 can be easily varied by the charged spring force of the spring 22 itself, and the vibration of the operating end can be stopped.

Therefore, this spring 22 changes the transfer function between the detection section and the operation output end in the control system, and provides a Teilter effect that prevents transmission of vibrations applied to the detection section.

In addition, since the spring 22 absorbs the reaction force applied from the clutch 14 to the stem culm A' that is in contact with the sensor bar 12' when the sensor bar 12' is shifted from S to H, this reaction force can be reduced. It is possible to prevent the stem culm A' from being pushed down.

Effects of the Invention According to this invention, basically, the working part is driven when a crop stem culm is detected by the sensor bar, so when there is no need to drive the working part, such as when there is no crop stem culm, Stop the drive operation of the working part to eliminate power,
This provides an excellent effect of preventing wasteful consumption.

Further, the base of a link is pivotally supported at the tip of an arm provided at the base end of the sensor bar, and the tip of the link is slidable to the base of the reaping latch via a bullet supported by the link exterior stopper. By being inserted,
Since the bullet absorbs vibrations caused by changes in the amount of crop sensing rotation of the sensor bar, an excellent effect is achieved in that the pressing tension is not fluctuated and stable power can be transmitted at a constant pressure.

Furthermore, since the bullet absorbs the reaction force applied to the planted stem culm, this reaction force is reduced and the excellent effect of preventing the stem culm from being pushed down is achieved.

In addition, since unnecessary operation of the drive unit can be suppressed, the load on each part can be kept to a minimum and the service life can be extended.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is an overall plan view of the binder, Fig. 2 is a power transmission system diagram showing a steady state in which the crop sensor is not detecting operation, and Fig. 4 is Fig. 3. FIG. 3 is a power transmission line diagram showing the crop detection operation state of the sensor bar. 1... Reaping part, 16... Divider-1
9... Cutting blade, B... Stem culm introduction route, 1
2'...Sensor bar, 14...Reaping latch, 12...Crop sensor, 12b...
...Arm, 13...Link, 22...
...A bullet machine.

Claims (1)

[Claims] 1 The sensor bar, which has its tip facing the stem culm introduction path between the divider tip provided in the reaping section of the harvester and the rear cutting blade, and whose base is pivotally supported on the side machine frame of the reaping section, is the reaping latch. In the crop sensor structure linked to the crop sensor structure, the base of the link is pivotally supported at the tip of the arm provided at the base end of the sensor bar, and the tip of the link is connected to the crop sensor structure via the ammunition supported by the link exterior stopper. A crop sensor structure for a harvester, characterized in that the sensor structure is slidably inserted through the base of the latch.