JPS6040109Y2 - Combine harvester handling depth adjustment device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a device for adjusting the handling depth of the husk in the threshing section in the process of conveying the cut husk from the husk culm reaping section to the rear husk culm in a combine harvester. .

Conventionally, in a combine harvester that has a shell culm reaping section at the front of the machine and a threshing section behind it, the starting end is directly above the cutting blade of the shell culm reaping section, and the handling opening of the threshing section A shell culm carrier having a terminal end nearby is provided, and the handling depth of the shell culm in the threshing section is adjusted by changing the relative position between the terminal end of the shell culm carrier and the starting end of the threshing section supply chain. Except for the case of standard length culms, the distance between the end of the husk conveyor and the starting end of the threshing section feeder is wide in both short and long culms, making it difficult to transfer the husk culms smoothly. There was a drawback that the culm stagnates between the two, causing various problems.

Alternatively, in order to solve the above problem, instead of moving only the terminal end of the husk culm conveyor and changing its position in relation to the starting end of the threshing section supply chain, the entire husk culm conveying body is moved and the starting end of the threshing section supply chain is moved. There is also a method of adjusting the handling depth of the culm by keeping the distance between the culm and the end of the culm carrier always the same, but since the starting end of the culm carrier also moves, it is difficult to cut the culm. The starting position for clamping and conveying the shell culm is changed each time, and this also has the disadvantage of causing various problems such as stagnation of the shell culm and disturbance of the conveying posture.

The present invention has been devised to eliminate the above-mentioned drawbacks, and involves engaging the stem of the reaped culm above the cutting blade of the culm reaping section or sandwiching the stock base until it reaches the handling opening of the threshing section. A starting end of two upper and lower shell culm carriers to be transported is provided, and to drive the shell culm carrier, a transport drive shaft is provided which rotates from the prime mover via an appropriate transmission means, and the upper transporter is connected to the upper part of the shaft. , a scraping star wheel is provided at the bottom, it rotates around the conveyance drive shaft, has a lower conveyance drive shaft on the idle side, and a power transmission device from the conveyance drive shaft to the lower conveyance drive shaft. A lower conveying body is provided rotatably around a lower conveying drive shaft, and an upper part of the lower conveying body is fixed to a reaping frame, and a handling depth adjustment drive device whose expansion and contraction direction is determined is provided. It is supported at the telescopic end, and the handling depth adjusting drive device expands and contracts, thereby making it possible to move the terminal end of the lower conveying body in the lateral direction substantially parallel to the threshing section handling opening.

With the above structure, the terminal end of the lower conveying body and the starting end of the threshing section feeder en can be selectively connected, and the connection can be used to adjust the handling depth for either short or long culms. This eliminates the phenomenon of stagnation of the transfer shell culm at the culm, and there is no hindrance to the transfer of the shell at all.Furthermore, even if the starting end of the lower conveyor moves, its working surface does not interfere with the star foil in plan view. In addition to overlapping in the rotation locus, since the starting end of the upper carrier is above the star foil, the upper and lower parts of the culm stem are always engaged at the same point at the same point by the star foil and the upper carrier. We developed a handling depth adjustment device for combine harvesters that can be transported without disturbing the raised transport posture, can be fed to the nipping position of the moved lower transporter, and can be transferred to the lower transporter without any problems. This is what we intend to provide.

To explain one embodiment of the present invention shown in the drawings, 1
is a threshing unit placed on a chassis 3 on which the traveling device 2 of the combine is suspended, and a culm pulling device 5 is installed obliquely from near the ground in front of the cutting blade 4 to rearward and upward; Two upper and lower stages of shell culm carriers 6 and 7 are installed diagonally from above in the vicinity of the handling opening of the threshing section 1 to engage or pinch and convey the stem and stock portion of the shell culm.

A conveyance drive shaft 8 that drives these two upper and lower culm conveyors 6 and 7 is rotated by a prime mover via an appropriate transmission means, and the upper conveyor 6 is driven by the upper part, and the lower conveyor is driven by a chain 10 from the lower part. The shaft 9 is rotated to drive the lower transport body 7, and at the same time, the chain case 11 containing the chain 10 is configured to rotate around the transport drive shaft 8.

12 is a culm scraping star wheel attached to the conveyance drive shaft 8, and 13 is a culm conveyor 6 in two stages above and below the prime mover.
, 7 is a worm gear that transmits power, 14 is a stock decking plate, and 15 is a threshing section grain culm supply chain.

In the configuration as described above, the erect culm pulled up by the moving device 5 is cut by the cutting blade 4, and is raked by the raking star wheel 12 to the starting ends of the upper and lower culm conveyors 6, 7. , the stem is engaged by the carrier 6.7;
The stock head is held and transported to the vicinity of the handling port of the threshing section 1,
The husk is transferred to the threshing section supply chain 15.

The handling depth of the husk in the threshing section 1 is adjusted by the lower conveyor 7.
The upper part is supported by the telescopic end of the handling depth adjustment drive device 20, which is fixed to the reaping frame and whose expansion/contraction direction is determined. , the terminal end of the lower conveyor 7 moves laterally approximately parallel to the threshing section handling port, and the starting end moves back and forth in the machine traveling direction on the non-active side of the scraping star wheel 12, as shown in FIG. At the solid line position, the conveying and clamping position of the threshing unit supply chain 15 for the harvested husk is on the stock base side, and when the starting end of the lower conveyor 7 is moved to the position shown by the imaginary line, the threshing unit supply chain for the harvested husk is moved to the position shown by the imaginary line. The transfer clamping position of No. 15 is a position close to the stem.

Therefore, if the culm is selectively adjusted to the former solid line state, and the long culm is selectively adjusted to the latter imaginary line state, the appropriate handling depth can always be maintained regardless of the length of the culm. The starting end of the lower conveying body 7 is configured so that the locus of movement of the working surface on the starting end side of the lower conveying body 7 and the rotation locus of the star wheel 12 always overlap in plan view, and the star wheel 12 is rotated. An upper transport body 6 is located above the transport drive shaft 8.
Since the starting end of the erect culm is positioned and driven, the upper transporter 6 and star wheel 12 always keep the plant base side at the same position than the position where the stem of the erect culm is sandwiched between the upper transporter 6 and the lower transporter 7. Since the grain is engaged at the same point and sent backwards, there is no stagnation of the grain near the cutting blade or disturbance of the conveying posture.
It is not affected by any change in the nipping start point of the lower conveyor 7.

In summary, according to the present invention, the culm cut by the cutting blade is always engaged and transferred at the same point by the raking star wheel and the upper conveyor, and the plant base side is connected to the lower conveyor. Near the handling opening of the threshing section, the longitudinal positional relationship between the end of the lower conveyor and the threshing section supply chain is almost constant; This method is extremely useful and has practical effects, such as being able to smoothly transfer the culm without causing stagnation.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a side view of a combine harvester, FIG. 2 is a plan view of a grain culm conveying portion, and FIG. 3 is a longitudinal sectional view of the main part. In the figure, 1... threshing part, 4... cutting blade, 5
..... Culm lifting device, 6, 7.. .... Culm conveyor, 8.. Conveyance drive shaft, 9.. Lower conveyance drive shaft, 10 ...Chain, 11...
... Chain case, 12 ... Star wheel, 13 ... Worm gear, 14 ...
- Stock decking board, 15... Threshing section culm supply chain, 20... Handling depth adjustment drive device.

Claims (1)

[Scope of utility model registration request] The upper conveying body 6 is driven by the upper part of a conveying drive shaft 8 to which power is transmitted from the prime mover through an appropriate means, and a scraping star wheel 12 is provided at the lower part, which rotates around the conveying drive shaft 8. , a rotary arm 11 having a lower conveyance drive shaft 9 on the idle side and a power transmission device from the conveyance drive shaft 8 to the lower conveyance drive shaft 9 is provided, and the lower conveyance body 7 is rotated around the lower conveyance drive shaft 9. is rotatably provided, and the upper portion of the lower transport body 7 is supported by the telescopic end of a handling depth adjustment drive device 20 which is fixed to the reaping frame and whose direction of expansion and contraction is determined, so that the handling depth adjustment drive device 20 expands and contracts. As a result, the terminal end of the lower conveyor 7 moves horizontally and approximately parallel to the threshing section handling port, and the lower conveyor drive shaft 9 at the starting end moves back and forth in the machine traveling direction on the non-active side of the scraping star wheel 12. Combine harvester handling depth adjustment device.