JPH0240744Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a lifting device for a combine harvester in which a seeding device is disposed immediately before the crawler and after the pretreatment device.

A space is formed between the rear of the pre-processing device of a combine harvester with a crawler and the front of the crawler 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 a vertically movable manner at the front of the machine body; In the case where a seeding device is provided with a seeding section, the seeding section is supported by a mounting member disposed behind the pretreatment section so as to be able to move up and down while being biased downwardly.
The seeding section of the seeding device is biased downward and has the feature of being able to maintain a constant trench depth, but on the other hand, when the pretreatment section is raised, the seeding section hangs down to the lowered position, resulting in a lower ground clearance. As a result, problems arise, such as, for example, when the seeding part comes into contact with a ridge or the like during traveling, it may be crushed, the seeding part itself may be damaged, or running resistance may increase.

The purpose of the present invention is to improve such deficiencies, and the present invention is configured so that the sowing unit moves upwardly as the preprocessing device moves upward, so that the preprocessing device can be moved upward. When raised, the sowing section is moved up significantly in conjunction with the rising motion, thereby eliminating the situation of the sowing section sagging and accidentally colliding with the ridge, etc., and allowing smooth sowing work. It is.

Hereinafter, an embodiment of the present invention will be described based on the drawings. Reference numeral 1 denotes a combine harvester chassis supported by a crawler 2 and equipped with a pretreatment device 3 at the front.
A threshing machine 6 equipped with a feed chain 4 on the side 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 mechanism 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. 13
is 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 protruding 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 the portion immediately after the combing device 7 of the transmission cylinder 16;
A bevel gear 18 is pivotally attached to the tip.

Reference numeral 20 denotes a seeding tank of a seeding device that is detachably attached to the upper side of the combing device 7, and has a rotary valve 21 inside. Bevel gear 1 of the power take-off shaft 17
8 and is removably engaged. 20a is a discharge port, to which a seeding pipe 23 is connected. As the rotary valve 21 rotates, the seeds filled in the seeding tank 20 are discharged from the discharge port 20a. Reference numeral 7a denotes a fixture that supports the seeding tank 20 in an upwardly removable manner, and its base is screwed onto the combing device 7.

The rotary valve 21 has a large number of feeding holes 21a, and when adjusting the amount of sowing, the plug 21b can be used without replacing the rotary valve 21 one by one.
This can be done by fitting and unfitting into the feeding hole 21a. 20b is a brush for preventing seeds from flying out.

24 and 25 are vertical frames provided on both left and right sides of the lower part of the pre-processing device 3, and a horizontal frame 26 made of a round pipe connected at its rear end is connected to the gear case 1.
It is connected to a transmission cylinder 28 that protrudes forward and downward from 3.

As mentioned above, the transmission cylinders 16, 28, the horizontal frame 2
Pre-processing device 3 configured in a strong frame shape with 6 etc.
is configured to rotate up and down about the pivot shaft of the gear case 13 by a hydraulic cylinder 29 provided between the chassis 1 and the support column 14 via a link mechanism. That is, to explain the above link mechanism in detail, reference numeral 27 is a horizontal frame for supporting a lift attached to the rear of the horizontal frame 26, and is made of a round pipe.Brackets 27a fixed at both ends of this frame are externally fitted to allow the horizontal frame 26 to rotate. I will pay for it.

41 is a lift arm whose base is fixed to the horizontal frame 27 and extends upward and rearward, and its upper end is attached to the support column 14.
It is rotatably connected to the tip of an auxiliary link 42 which is pivotally supported in the middle of the height direction. The hydraulic cylinder 29 is installed between the midway part of the lift arm 41 and the chassis 1, and the piston operates in a direction substantially parallel to the auxiliary link 42, and when the piston is pushed out, the second As shown by the chain line in the figure, the amount of movement of the auxiliary link 42 is small, but the tip of the transmission cylinder 28, which rotates around the input shaft 15 at the upper end of the support column 14, is configured to move forward and upward by a large lift. has been done.

30 is a seeding section provided in a space A formed between the rear of the pretreatment device 3 and the front of the crawler 2;
The horizontal frame 26 of the pretreatment device 3 and the horizontal frame 27 attached thereto are removably attached to this, and the horizontal frame 26 of the seeding section 30,
A fitting 31 is provided at the attachment base to the horizontal frame 27, and the horizontal frame 26 and the horizontal frame 27 are sandwiched between the fitting 31 and the opposing fitting 32 from above and below, and are supported by bolts 33.

The front ends of the upper and lower fittings 31 and 32 are brought into close contact with each other and fitted onto the horizontal frame 26 with a gap, while the rear ends are fitted with a gap between the two fittings 31 and 32 and the bolts 33 are tightened to allow seeding. The assembly of the part 30 is ensured.

A horizontal support shaft 34 is provided below the mount 31 to pivotally support the sowing unit 30 and to enable it to move laterally with respect to the machine body. The seeding unit 30 rotatably supports groove-making desks 36, 36 on both left and right sides of the lower part of the vertical rod supported by the holder 35c, and the seeding pipe is provided between the rear portions of the two groove-making desks 36, 36. 23, that is, a seed discharge portion is provided. The boss portion 35b at the tip of the arm 35a of the seeding section 30 is fitted onto the horizontal support shaft 34 as described above, and the seeding section 30 is configured to be movable up and down about the horizontal support shaft 34. Reference numeral 37 denotes a stopper rod that is provided parallel to the horizontal support shaft 34. One end is fixed to the mounting bracket 31, and the other end is connected to the horizontal support shaft 34 via the side plate 34a. The amount of downward movement of 35a is regulated. 34b is a collar for positioning in the left and right direction.

Reference numeral 38 denotes a wound spring for urging the sowing unit 30 downward, which is fitted onto the horizontal support shaft 34, and has one end attached to the arm 35.
a, and the other end is hooked to the stopper rod 37.

43 is a seeding section 3 which is connected to the rise of the pretreatment device 3.
0 is a continuous rod for lifting up the auxiliary link 42, and its lower end is pivoted to the upper part of the holder 35c of the seeding section 30, and the elongated hole 43a provided in the upper end is provided in the middle of the auxiliary link 42. It is engaged with the connecting pin 42a. This long hole 43a is formed as follows. That is, the arm 35a when the pre-processing device 3 is in the lowered position and the arm 35a is raised to the top of the vertical movement biased by the winding spring 38.
is in contact with the mounting bracket 31, the connecting pin 42a is positioned at the lower end of the elongated hole 43a, and the connecting pin 42a moves to the upper end of the elongated hole 43a during the ascending process of the pretreatment device 3. The sowing unit 30 is brought into contact with the tip of an adjustment bolt 43b that defines the raised position, and at the highest position of the pretreatment device 3, the arm 35a is brought into contact with the mounting bracket 31. It is set to be raised at the same time, and any further rise will be stopped.

The present invention is constructed as described above, and the sowing section 3
0 to the preprocessing device 3, place the mounting bracket 31 on the lower part of the horizontal frame 26 and the horizontal frame 27, and then press the mounting bracket 32 at the position opposite to the mounting bracket 31.
over the horizontal frame 26 and the horizontal frame 27,
By tightening the upper and lower fittings with the bolts 33, the seeding section 30 is firmly fixed.

Insert the seeding tank 20 into the mounting bracket 7a 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 part of the seeding section 30.

When the sowing device is installed as described above and sowing is carried out at the same time as harvesting, when the seeding tank 20 is filled with seeds and the work is started, the erect grain culms are combed by the combing device 7, as in the case of harvesting by a normal combine harvester. While being raised, the grain culms are guided by the conveying devices 10 and 11 and cut at the base of the plant by the cutting blade 12, and the cut grain culms are transferred upward and rearward by the conveying devices 8 and 9, and are further clamped by the feed chain 4 and rearward. While being transported, the grains are threshed by a threshing machine 6.

In this harvest operation process, a groove-making desk 36 provided in the sowing unit 30 and urged downward forms 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 delivered in fixed quantities from the discharge port 20a by the rotation of the rotary valve 21, and are sown into the groove through the seeding pipe 23. When the groove position is set within the width of the rear crawler 2, the seeds sown in the groove are placed within the width of the rear crawler 2.
It is covered with soil. The sowing position can be moved laterally by moving the positioning collar 34b.

In the above-described operation, the groove-making desk 36 is always pressed against the ground by the bias of the spring 38, and moves up and down following the unevenness of the ground, and the connecting rod is also guided by the connecting pin 42a. It moves up and down.

When moving around the aircraft, the lower end of the lift arm 41, whose upper end is supported by the auxiliary link 42, moves significantly forward by the operation of the hydraulic cylinder 29.
Along with this, the entire pretreatment device 3 is lifted up. At this time, the connecting rod 43 lifts up the sowing unit 30, but at this time, the displacement of the connecting pin 42a, which is the upper fulcrum, is slight, and the horizontal frame 26 moves forward and upward greatly, so the connecting pin 42a and the horizontal frame 2
6 increases, and the connecting pin 42a is connected to the elongated hole 43.
While in contact with the upper end of a or the adjustment bolt 43b, the groove making arm 35a is lifted up to the position where it comes into contact with the mounting bracket 31, and as a result, the sowing unit 30 is moved upward together with the pretreatment device 3 and moved further above this. Since the sowing unit 30 is moved upwardly as a whole, the sowing unit 30 as a whole rises significantly, so that the work can be done smoothly without coming into contact with ridges or the like.

In this embodiment, the interlocking structure is shown as a linkage, but the structure is not limited to this, and for example, as shown by the imaginary line in FIG.
The midway of 3' may be hooked onto the sliding support 41' of the lift arm 41, and the end portions thereof may be fixed to the seeding section 30 and the support 14, respectively, and furthermore, the same operation as described above can be performed. Pretreatment device 3
The seeding section 30 may be supported using a hydraulic cylinder device or the like that performs vertical movement in conjunction with the operation of the seeding section 30.

In this way, the present invention solves the problem of creating a space between the rear of the pre-treatment device and the front of the crawler of a combine harvester with a crawler, in which a pre-treatment 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 combine harvester equipped with a seeding device is provided with a seeding unit in the cavity, the seeding unit being constantly biased downwardly and vertically movable by a mounting member disposed at the rear of the pretreatment unit. In addition to freely supporting the sowing unit, by connecting the sowing unit and the machine body side with a connecting rod or wire, etc., the sowing unit can move upwardly to a position higher than the ascending movement of the preprocessing device as the preprocessing device moves upward. This lifting device for a combine harvester with a seeding device is characterized by an interlocking structure, in which the seeding portion is automatically raised to the upper level along with the rise of the pre-treatment portion, thereby preventing damage to ridges, etc. due to reduction in ground clearance. This eliminates contact and allows for smooth crossing of ridges and sowing operations.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a side view of the front part of a combine harvester with a seeding device, Fig. 2 is a side view showing the operation of the main parts, and Fig. 3 is the main parts. Fig. 4 is a partial sectional view of the seeding tank, Fig. 5 is a perspective view of the rotary valve, Fig. 6 is a perspective view showing the assembly structure of
The figure is a partially sectional view of the same as above. 1. Vehicle chassis, 2. Crawler, 3. Pretreatment device, 7. Combing device, 12. Cutting blade, 26.
Horizontal frame, 27... Horizontal frame, 30... Seeding section,
A. Blank space.

Claims (1)

[Scope of utility model registration request] A space is formed between the rear of the pre-processing device of a combine harvester with a crawler and the front of the crawler 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 a vertically movable manner at the front of the machine body; The combine harvester is equipped with a seeding device and is equipped with a seeding section, and the seeding section is supported by a mounting member disposed at the rear of the pretreatment section so as to be able to move up and down while always being biased downwardly. The sowing section and the machine body side are connected by a connecting rod or wire, etc., so that the sowing section is configured to move upwardly as the pretreatment device moves upward, so that the sowing section moves upward to a level higher than the upward movement of the pretreatment device. A lifting device for a combine harvester with a seeding device.