JPS646008Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a seeding device for a combine harvester.

By sowing soybeans, adzuki beans, etc. at the same time as harvesting wheat, etc., it is desired to establish a work system that eliminates labor peaks during harvesting and sowing and enables work to be done in a timely manner. A method has been devised in which a groove cutting machine is installed in a weeding device provided in a section, and seeds are sown in the grooves formed by the groove cutting machine. However, in the above-mentioned device, the feeding pipe of the seeding device must be installed in front of the weeding device and facing the conveyance path of the stem culms, which has a defect that hinders the smooth movement of the stem culms. The ground clearance of the weeding device was increased by the height of the furrowing device, which caused the problem that the stem culm could not perform its original role of weeding.

Therefore, the present invention is a combine harvester with a crawler in which a pre-processing device consisting of cutting blades, a combing device, etc. is supported in the front of the machine so that it can be raised and lowered, and a space is created between the front end of the crawler and the rear end of the pre-processing device. A sowing section equipped with a furrower and a seed discharging section is provided in the empty space, and the sowing section is always forcibly biased downward by a mounting member installed at the rear end of the pretreatment section. However, since it is supported in a vertically movable manner and is equipped with a stopper for regulating the lowering position, it has a simple structure overall, and not only eliminates the defects of the conventional method, but also greatly improves workability. It is an object of the present invention to provide an excellent seeding device for a combine harvester.

Hereinafter, an embodiment of the present invention will be described based on the drawings. 1 is a combine harvester chassis supported by a crawler 2 and equipped with a pre-processing device 3 at the front;
A threshing machine 6 equipped with a feed chain 4 on the side and a cutter 5 on the rear is mounted on the chassis 1.

The pre-processing device 3 has a combing device 7 erected at the front, and conveyor devices 8 and 9 for lifting and vertical feeding equipped with a handling depth adjustment function are disposed at the upper rear part of the combing device 7. Conveying devices 10 and 11 for guiding the scraping are arranged, and these conveying devices 8, 9, 10, and 11 are all inclined in such a manner that they are low in the front and high in the rear. Reference numeral 12 denotes a cutting blade, which is provided below the conveying device 11.
Reference numeral 13 denotes a gear case provided at the rear upper part of the pre-processing device 3, which is rotatably supported at the tip of a support column 14 erected at the front of the chassis 1. The rotation axis is the input shaft 15
The power from the engine is transmitted to the input shaft 15 by an appropriate transmission mechanism, and the power from the engine is transmitted to the input shaft 15.
The signal is transmitted to each operating section of the pretreatment device 3 via the transmission mechanism in the pretreatment device 3. Reference numeral 16 denotes a transmission cylinder projecting forward from the gear case 13, which supports the upper part of the combing device 7 at its tip and drives the combing device 7 by an internal transmission mechanism. Reference numeral 17 denotes a power take-off shaft protruding outward from a portion of the transmission cylinder 16 immediately after the combing device 7, and a bevel gear 18 is pivotally attached to the tip.

B shows the seed feeding part of the seeding device, and 20 is a seeding tank detachably attached to the upper side of the combing device 7, which is equipped with a rotary valve 21;
A bevel gear 22 attached to the end of one protruding shaft is releasably engaged with the bevel gear 18 of the power take-off shaft 17. 20a is a discharge port, into which the seeding pipe 2 is connected.
3 are connected. As the rotary valve 21 rotates, the seeds filled in the seeding tank 20 are fed out through the discharge port 20a. 2
Reference numeral 4' denotes a fixture that supports the seeding tank 20 in an upwardly removable manner, and its base is screwed onto the combing device 7.

24 and 25 are vertical frames provided on both left and right sides of the lower part of the preprocessing device 7, and the rear ends are connected by horizontal frames 26 and 27 provided laterally, and the frame 26
is connected to a transmission cylinder 28 protruding forward and downward from the gear case 13. As described above, the pretreatment device 3, which is configured in a strong frame shape by the transmission cylinders 16, 28, the horizontal frame 26, etc., rotates the rotation support shaft of the gear case 13 by the operation of the hydraulic cylinder 29 provided between it and the chassis 1. It is configured to rotate up and down around the center.

Reference numeral 30 is a seeding section of a seeding device provided in a space A formed between the rear end of the pretreatment device 3 and the front end of the crawler 2, and the frame 26, which is disposed at the rear end of the pretreatment device 3, 27 and is detachably attached to this.

To further explain this in detail with reference to FIG. 2, mounting brackets 31, 31 are provided on the left and right sides of the attachment base of the seeding unit 30 to the horizontal frames 26, 27, and mounting brackets 32, 32 facing the mounting brackets 31, 31 are provided on the left and right. and horizontal frame 26, 27
are sandwiched from above and below and firmly tightened and fixed with bolts 33. A horizontal support shaft 34 is provided below between the fittings 31, 31 to pivotally support the groove forming frame 35 and to enable it to move laterally with respect to the body. The groove-making frame 35 rotatably supports a groove-making device consisting of groove-making desks 36, 36 on both left and right sides of its lower part, and the tip of the seeding pipe 23, that is, the seed discharge part, is attached to the rear part. There is. The tip boss portion 35b of the arm 35a protruding forward from the groove-making frame 35 is fitted onto the horizontal support shaft 34 as described above, and the groove-making frame 35
5 is configured to be rotatable around the horizontal support shaft 34 and movable in the lateral direction. A stopper rod 37 is provided parallel to the horizontal support shaft 34, and both ends are fixed to the base of the horizontal support shaft 34, and the stopper rod 37 regulates the downward movement amount and horizontal movement position of the arm 35a. It is becoming more and more like this. 3
Reference numeral 8 denotes a spring for constantly forcing the groove forming frame 35 downward, and a spring 8 is provided parallel to the horizontal support shaft 34 between the tip of the protrusion 35c projecting upward from the boss portion 35b and the fittings 32, 32. Horizontal rod 3 installed in the direction
2a and a spring receiver 32b fitted externally. 32c is a butterfly bolt for fixing the spring receiver 32b.

Next, 39 is a sensor attached to the seeding pipe 23, which is connected to an alarm device installed at an appropriate position, and is designed to detect and notify when the seeds flowing down inside the pipe 23 ceases. . 40
is an opening/closing guide plate installed at the rear of the cutter 5, and
A guide plate 40 is provided behind the position corresponding to position 0, and when mulching the sowing trace with cut straw,
When opened, cut straw can be placed over the sowing marks, and when folded inward, the cut straw falls to the side.

The present invention is constructed as described above, and when mounting the seeding device on the pretreatment device 3, the mounting brackets 31, 3
1 to the lower side of the horizontal frames 26 and 27,
The mounting bracket 3 is located opposite the mounting brackets 31 and 31.
2 and 32 are placed over the horizontal frames 26 and 27, and the upper and lower fittings are tightened with bolts 33 and 33, so that the seeding section 30 is firmly fixed. Also,
Insert the seeding tank 20 into the mounting bracket 24' from above,
The bevel gear 22 and the bevel gear 18 may be attached so as to mesh with each other, and the tip of the seeding pipe 23 may be attached to the rear of the groove-making frame 35 of the seeding section 30 below.

As mentioned above, when the sowing device is attached and sowing is carried out at the same time as harvesting, when the seeding tank 20 is filled with seeds and work is started, the erect grain culms are combed by the combing device 7 in the same way as in the harvesting operation using a normal combine harvester. While being raised, the grain culm is guided by the conveying devices 10 and 11 to cut the base of the stock by the cutting blade 12, and the cut grain culm is transferred upward and rearward by the conveying devices 8 and 9, and is further held by the feed chain 4, While being transported to the rear, the straw is threshed by a threshing machine 6, and the waste straw is cut by a cutter 5.

In this harvesting process, the groove cutting frame 3
A groove-making desk 36, which is pivotally supported by a groove-making desk 5, makes grooves of a required depth in the field that has already been cut as the machine advances. On the other hand, the seeds filled in the seeding tank 20 are intermittently fed out from the discharge port 20a in fixed quantities by the rotation of the rotary valve 21, are discharged from the rear part of the groove-making frame 35 through the seeding pipe 23, and are sent to the groove-making desk 36. Seeds are sown in the grooves formed. Since the groove position is set within the width of the rear crawler 2, the seeds sown in the groove are covered with soil by the crawler 2, and when mulching with cut straw cut by the cutter 5, the guide plate is used. When 40 is opened, mulching can be applied on top of the covered soil. To move the seeding position laterally,
It is sufficient to loosen the wing bolt 32c for fixing the spring receiver 32b, move the arm 35a and the spring receiver 32b, and tighten the wing bolt 32c at that position.

In the above-described operation, the groove-cutting desk 36 is always pressed against the ground by the force of the spring 38, and moves up and down following the unevenness of the ground, and also quickly responds to the cutting height adjustment of the pre-processing device 3. By correspondingly, the groove depth is always kept constant.

Furthermore, when the machine rotates, the pretreatment device 3 is lifted up by the hydraulic cylinder 29, and the sowing unit 30 rotates downward, but it is regulated by the stopper rod 37. Further downward rotation is prevented. The operation of the pre-treatment device 3 is completely stopped during the above-mentioned lifting direction, and since the rotary valve 21 of the seeding tank 20 also does not operate, the sowing operation is not performed during the lifting direction. Canceled.

In this way, the present invention provides a combine harvester with a crawler in which a pre-processing device consisting of cutting blades, a combing device, etc. is supported in the front of the machine so that it can be raised and lowered, and an air space is provided between the front end of the crawler and the rear end of the pre-processing device. A sowing section is provided in the empty space with a furrower and a seed discharging section immediately after it, and the sowing section is attached to a mounting member disposed at the rear end of the pretreatment section so that the sowing section is always facing downward. It is forcibly energized and supported so that it can move up and down, and is also equipped with a stopper to regulate the lowering position, so that the weeding and transporting of grain culms as the combine moves forward is not hindered in any way and is smooth. However, by effectively utilizing the space formed between the rear end of the pretreatment device and the front end of the crawler, it can be made strong and stable without changing the configuration of the aircraft body. A simple combine harvester with a seeding device has been constructed, and since the seeding section is always forced downward, even if the cutting height is changed by the pre-treatment device, it can quickly respond to the change. This allows seeding to be carried out at an accurate depth at all times. Moreover,
At this time, the lowering position of the sowing unit is regulated by a regulating stopper, so even if the pretreatment device is frequently moved up and down by a large amount during work, the sowing unit will not descend below a certain position and will continue to move intermittently. There is no problem at all, even during seeding work.

Furthermore, since a crawler is provided immediately after the sowing section and presses the sowing track, there are many practical advantages such as sowing and covering soil can be done simultaneously in one stroke.

[Brief explanation of the drawing]

The drawings show an embodiment of the device of the present invention, in which Fig. 1 is a side view of the front part of the combine showing the installed state of the seeding device, Fig. 2 is a perspective view of the main parts of the same, and Fig. 3 is a simplified overall plan view of the combine harvester. 2... Crawler, 3... Pretreatment device, 20... Seeding tank, 26, 27... Horizontal frame, 30... Seeding section, 35... Groove making frame, 36... Groove making desk, A
... Blank space, B... Seed feeding part.

Claims (1)

[Scope of utility model registration request] In a combine harvester with a crawler, in which a pre-processing device consisting of a cutting blade, a combing device, etc. is supported in the front of the machine so that it can be raised and lowered, a space is formed between the front end of the crawler and the rear end of the pre-processing device. A sowing section equipped with a furrower and a seed discharging section immediately behind the sowing section is provided, and the sowing section is always forcibly biased downward by a mounting member disposed at the rear end of the pretreatment section. A seeding device for a combine harvester, characterized in that it is supported to be movable up and down and is equipped with a stopper for regulating the lowering position.