JPS643Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a harvester, and more specifically, the sensor arm of the steering sensor constituting the automatic steering device also serves as a stock guide in the reaping section, so that the grain culm to be reaped is This paper proposes a harvester that improves reaping efficiency by smoothly raking.

When harvesting grain culms using a harvester, the grain culms are separated into rows by a weeding board located at the front of the machine, and separated from the weeding board by a stock guide rod located at the rear of the weeding board. At the same time, the lodging rice is raised by a pulling device, and in some models, the grain culm, which moves backward relative to the machine body, is positioned rearward from the plant guide rod. The grain culm is guided by another stock guide rod to a raking device consisting of a raking belt and raking foil, etc., and the grain culms raked by these are harvested by a cutting blade, and then the upper and lower conveying chains, etc. The grain is then transferred to the threshing department.

By the way, harvesters equipped with automatic steering devices have recently been developed and put into practical use. This automatic steering device is designed to grasp the relative positional relationship between the grain culm to be harvested and the aircraft and automatically perform steering to follow the grain culm. In order to detect this, steering sensors are installed behind the left and right grass dividing boards and in front of the cutting blade. This steering sensor is biased toward the inside of the aircraft when it does not come into contact with the grain culm, and rotates backward when it comes into contact with the grain culm and is pushed backwards as the aircraft moves forward. It consists of a rotatably mounted sensor arm and one or more limit switches that open and close depending on the rotational position of the sensor arm. The above-mentioned stock guide rods are not provided on the left and right dividing rods to which the culm is attached, and as a result, the action of raking the grain culm and guiding it to the cutting blade by the raking device cannot be performed smoothly, resulting in a reduction in reaping efficiency. This had the disadvantage of decreasing the

Therefore, a system was developed in which the sensor arm of the steering sensor also served as a guide rod for the stock.
Proposed in No. 138919. The object of the present invention is to further improve this, improve the accuracy of automatic steering control, and provide a harvester in which the culm does not become entangled with the sensor arm.

The harvesting machine according to the present invention detects the relative positional relationship between the grain culm to be harvested and the machine body using a steering sensor equipped with a sensor arm rotatably attached to the weeding rod. In a harvesting machine equipped with an automatic steering device that runs along the grain culm through control based on detection results, a part of the rotation area of the sensor arm due to contact of the grain culm with the sensor arm of the steering sensor. is located below the rotating area of the raking action part of the raking device that rakes the grain culm to be reaped toward the cutting blade side, and the rotation direction of the sensor arm due to contact with the grain culm rays is in the direction of the raking device. It is characterized in that it is configured to rotate in the opposite direction to the rotation direction of the insertion action portion. The present invention will be described in detail below with reference to drawings showing embodiments thereof.

FIG. 1 is a right side external view of the harvesting machine according to the present invention (hereinafter referred to as the present machine).
b, 10c are the branch rods, 10d and 10e are between the branch rods 10a, 10b and 10b, 10c, respectively.
Small grass rods placed in between, 10i, 10j, 10k,
10l is a lifting device, respectively. Grass division board 1 on the left end
The steering sensor 20 is attached to the grass dividing plate mounting rod 102c to which the grass dividing plate 01c is attached, and the steering sensor 4 is installed to the grass dividing plate attaching rod 102a to which the rightmost grass dividing plate 101a is attached. The sensor arm is attached so that a part of the rotation area of the sensor arm due to contact with the grain culm is below the rotation area of the scraping action section of the scraping device, which will be described later. And the dividing rods 10a, 10b, 10c and the small dividing rod 10d,
At the rear of 10e, a cutting blade 25 is disposed extending substantially across both ends of the machine body in the width direction, with the blade facing forward. Branch rods 10a and 10d, 10d and 10b, 1
In the intermediate portions between 0b and 10e, and between 10e and 10c, as shown in FIG. 2, there is a scraping device 5 having a scraping belt 51a and a scraping wheel 51b, which are rotatably driven by a pulley 51c, on the upper and lower sides as scraping action parts, respectively. One set of each are arranged, and the grain culms to be harvested are
It is arranged to lead to. Behind the central grass dividing rod 10b and the small grass dividing rods 10d, 10e, there are highly elastic metal stock guide rods 10f, 10g extending diagonally rearward and upward in left and right pairs, respectively.
10h is installed to regulate and guide the movement route of the grain culms, and small grass dividing boards 101d and 101 are placed behind the stock guide rods 10f and 10h.
At the front ends of the grass dividing plate mounting rods 102d and 102e, to which e is attached, other stock guide rods, such as a center guide 10f', are attached for guiding the grain culms to the raking device.

FIG. 2 shows how the steering sensor 4 is attached to the weeding rod 10a of the harvester according to the present invention. The grass divider rod 10a is constructed by inserting and fixing a grass divider plate 101a into a grass divider plate mounting rod 102a extending forward from the vehicle body, and the steering sensor 4 is connected to a drawer installed vertically on the grass divider plate mounting rod 102a. Stay 10 for installing device 10i
It is attached to 3a. The steering sensor 4 includes a limit switch and a switchbox 41 containing a cam that opens and closes the limit switch.
The switch box 41 is attached to the stay 103a so that the sensor arm 4a is positioned on the left side, that is, on the inside of the body. The sensor arm 4a is bent at an obtuse angle,
It is attached to the switchbox 41 so that the rounded convex part faces forward, and when it is in a free state where it does not contact the grain culm, the base on the switchbox 41 side is attached as shown with a circle. It is biased by a spring in the switchbox 41 so that the end faces directly to the side. The sensor arm 4a comes into contact with the grain culm, is pressed by the movement of the machine, and is rotated rearward against the spring. The direction in which the sensor arm 4a rotates due to this contact with the grain culm is opposite to the direction in which the raking belt 5a, which is the raking action section, rotates. ○B, ○C, and ○D indicate the rotational positions of the sensor arm 4a, respectively, and ○D is the rotation end position. When the sensor arm 4a is in the area from ○I to ○B due to contact with the grain culm, when it is in the area from ○ro to ○c, and when it is in the area from ○ha to ○d, the switch box 41 The open/close states of the contact points of the limit switch in the interior are different, and depending on the respective open/close states, the control system to which this limit switch is connected will be able to detect whether the aircraft is veering left or right or whether it is appropriate for the grain culm. It recognizes that the aircraft is moving straight while maintaining a stable position, and that it is veering to the left, and accordingly adjusts the aircraft's direction of travel to the left or right.
Or, it is made to continue as it is as a dead zone.

The pivot point of the sensor arm 4a, that is, the pivot point for the switch box 41 is located at the center guide 1.
It is set so as to be approximately left and right opposite to the mounting position of the grass divider plate mounting rod 102d of 0f', and in relation to the lifting device 10i, it is located rearward from the lower end of this lifting device and is not The sensor arm 4a is in contact with the base of the grain culm to detect contact and separation between the grain culm and the dividing rod 10a.

Next, the raking device 5 located between the grass dividing rod 10a and the small grass dividing rod 10d is provided with a raking belt 51a and a raking foil 51b on the upper and lower sides, respectively, as raking action parts. The raking wheel 51b is for raking grain culms toward the cutting blade 25 at a position close to the cutting blade 25, and a drive-side pulley 51c is coaxial with the raking wheel on the upper part of the rotating shaft that drives this. A driven pulley 51d is disposed at an appropriate length in front of the pulley 51d, and between these two pulleys 51c and 51d is a scraper formed by protruding a claw portion of an appropriate length on the outer circumferential surface of the endless band. A folding belt 51a is stretched. Pulley 51
The direction of the line segment including the centers of c and 51d is branching rod 1
0a, non-parallel to the sub-branching rod 10d, with the front pulley 51d side lower right and the rear pulley 51c
The side is toward the upper left, and the whole is slightly divided into small pieces.
The grain culm is raked toward the cutting blade by rotating the raking belt 51a and the raking wheel 51b counterclockwise in a plan view toward the 0d side.

However, in the present device, a part of the rotation area of the sensor arm is positioned below the rotation area of the claw portion of the scraping belt 51a, and more specifically, the sensor arm 4a is positioned at the rotation end position. When the sensor arm reaches ○D, the sensor arm intersects the locus of the tip of the claw of the scraping belt 51a in plan view, and the sensor arm 4a moves toward the stock guide rod 10f or the center at this rotation end position ○D. The steering sensor 4 and the scraping device 5 are positioned relative to each other so that they can perform the same function as the guide 10f'.

Note that the steering sensor 20 attached to the leftmost grass dividing rod 10c and the raking device on the right side of the grass dividing rod 10c have the same configuration.

When performing reaping work with the proposed machine configured as described above, automatic steering is performed while detecting the relative positional relationship between the grain culm to be reaped and the machine body by rotating the sensor arm of the steering sensor. , the reaping work is carried out, but when we look at the grain stalks that arrive between the dividing rod 10a and the sub-dividing rod 10d, they are separated into rows by both dividing rods, and are separated into rows by both dividing rods 10a, After being introduced between 10d and 10d, it is pulled up by the pulling device 10i, and then guided to the cutting blade 25 by the raking device 5. Then, when the aircraft veers to the right and the grain culm approaches the sub-crop rod 10d, the stock guide rod 1
0f and the center guide 10f' guide the grain culm away from this subdividing rod 10d and guide it to the rotation area of the claw of the raking belt 51a, and conversely, the machine moves leftward and the grain culm is When the culm approaches the dividing rod 10a, the sensor arm 4a, which is at the rotation end position ○2, slides the grain culm against its left side surface and similarly rotates the claw portion of the raking belt 51a. The grain culm is guided to the moving area, and the grain culm is correctly guided to the blade portion of the cutting blade 25. Note that when the sensor arm 4a reaches the rotation end position ○2, the aircraft will automatically correct its traveling direction to the right, but in this case, the sensor arm 4a
The grain culm is introduced into the raking device 5, with the expectation that it will function as a stock guide rod.

Therefore, in the case of the present invention, there is a practical benefit in that grain culms can be harvested efficiently despite the provision of an automatic steering device.

Furthermore, in the harvester of the present invention, the direction in which the sensor arm 4a rotates in contact with the grain culm is opposite to the direction in which the raking belt 51a rotates, so that the raking belt 51a acts as a forward spring of the sensor arm 4a. Since the biasing force is assisted by the sensor arm 4a, the sensor arm 4a will not be forced to rotate backwards unnecessarily and unnecessary steering operation control will be performed.

In addition, the upper part of the grain culm whose sensor arm 4a is rotated backward will be slid to the opposite side by the raking belt, and even if a part of the grain culm becomes entangled with the sensor arm 4a, the raking belt will Since this is removed by sliding, the present invention has excellent effects such as less entanglement of grain culms with the sensor arm 4a.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a right side external view of the proposed machine, and FIG. 2 is a plan view schematically showing the mounting state of the steering sensor of the proposed machine. 4...Steering sensor, 4a...Sensor arm, 5
...raking device, 10a, 10b, 10c... grass dividing rod, 10d, 10e... small dividing rod, 10f... stock guide rod, 10f'... center guide, 10i,
10j, 10k, 10l... raising device, 25...
...Kariblade.

Claims (1)

[Scope of utility model registration request] A steering sensor equipped with a sensor arm rotatably attached to the weeding rod detects the relative positional relationship between the grain culm rays to be harvested and the machine body, and the grain culm is controlled based on this detection result. In a harvester equipped with an automatic steering device that moves along the grain culm, a portion of the rotation area of the sensor arm due to the contact of the grain culm ray with the sensor arm of the steering sensor may cause the grain culm to be reaped to It is located below the rotation area of the raking action part of the raking device that rakes toward the cutting blade side, and the rotation direction of the sensor arm due to contact with the grain culm is the same as the rotation direction of the raking action part. A harvesting machine characterized by being configured to be reversed.