JPH0120826Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a threshing device equipped with an orthogonal processing barrel behind the processing barrel of a threshing section of a combine harvester, for example.

Conventionally, various drive belts, drive metals, dust suction and exhaust devices, etc. have been installed on the outer surfaces of the left and right threshing side plates that house the processing cylinder, making it difficult to remove the receiving net of the processing cylinder. The reality is that there is no space to open a cleaning port or an internal inspection port. As a result, inspection and cleaning of the processing cylinder and concave have become extremely difficult, and their working functions have been significantly degraded.

The present invention was devised in view of the above points, and includes a receiving net slidably disposed on the lower peripheral side of the processing cylinder, and a cutting blade stand having a straw cutting blade on the rear peripheral side of the processing cylinder. The processing body is rotatably disposed, and the receiving net is fixedly held on the machine body by holding the cutting blade stand, while the receiving net is configured to be able to be pulled out rearward by rotation of the cutting blade stand. In addition to facilitating internal inspection and cleaning of the processing chamber with a catch net, etc., the above-mentioned straw cutting blade and cutting blade table are inspected and cleaned, and the upper part of the swinging sorting board is installed below between the handling cylinder and the processing cylinder. It is an object of the present invention to provide a threshing device that can make inspection and cleaning of the grain extremely easy, stably maintain these functions, and significantly improve threshing performance.

Embodiments of the present invention will be described in detail below based on the drawings.

Figure 1 is a side view of the combine harvester, and Figure 2 is a plan view of the same. In the figure, 1 is a truck frame to which a traveling drive transmission 2 is attached, and 3 is a vehicle installed on both sides of the truck frame 1 via traveling drive sprockets 4. 5 is a machine base supported by the track frame 1; 6 is a threshing section in which a feed chain 7 is stretched on the left side and a handling cylinder 8 is built therein; Machine stand 5
14 is a straw cutter that faces the end of the straw removal chain 15; 16 is a straw collection table; 17 is an engine that drives each part of the combine; 18 2 is a paddy tank that faces the grain lifting cylinder 19 and stores the grains to be taken out from the threshing section 6; 20 is a driver's cab equipped with a driver's seat 21 and a driving operation section 22; side clutch levers 23, 23 and a reaping and threshing clutch lever; 2
4 and 25 are provided in front of the driver's seat 21, and a traveling speed change lever 26 is installed on the left side of the driver's seat 21, so that grain culms are continuously harvested and threshed.

FIG. 3 is a cross-sectional side view of the threshing section 6, and FIG. 4 is a cross-sectional plan view of the same. In the figure, reference numeral 27 denotes a handling chamber in which an axial-flow type handling barrel 8 is mounted in the longitudinal direction of the machine body; 2
8 is a crimp net stretched below the handling chamber 27;
Reference numeral 29 denotes a swinging sorting board that is swingably supported in the front and rear directions via swing links 30 and the like, and includes a feed pan 31 located below the crimp net 28 and a feed pan 31 located below the crimp net 28 and the dust exhaust port 32. A chaff sieve 33 is located, a sorting net 34 is located below the chaff sieve 33, a sieve line 35 is extended behind the chaff sieve 33, and a second return pan 36 is disposed below the sieve line 35. This constitutes the oscillating sorting board 29.

In addition, in the figure, 37 is a winnowing machine that sends sorting air in the direction of the sorting net 34, and 38 is a winnow installed inside the first sorting gutter 39, which takes out the grains into the paddy tank 18 via the grain lifting tube 19. A conveyor 40 is installed inside the second sorting gutter 41 and returns the second reduced product to the handling chamber 27 via the second reducing throat 42. A second conveyor 43 is located above the rear end of the swinging sorting board 29. A processing cylinder is mounted on the right and left sides of the machine so as to be perpendicular to the processing cylinder 8, a concave 44 is a receiving net disposed around the lower circumference of the processing cylinder 43, and a concave 45 is located diagonally above the front part of the processing cylinder 43. A dust suction/exhaust fan is installed on the left side, which is a dust suction/exhaust device.
Reference numeral 46 indicates a dust intake inlet that communicates the processing chamber 47 having the processing cylinder 43 with the dust suction/exhaust chamber 48 having the fan 45; A third gutter 50 for discharging outside the machine is a fourth gutter installed above the processing cylinder 43 and fan 45 to guide the waste straw carried out by the straw removal chain 15. The threshed grains are sorted by a swinging sorting board 29.
The structure is such that only the sized grains are taken out into the paddy tank 18, and the waste straw is discharged outside the machine by the straw discharge chain 15 and the straw waste etc. by the fan 45.

As shown in FIG. 5, a partition plate 51 is installed obliquely above the front part of the processing cylinder 8 to remove straw and dust that is fed into the processing cylinder 8 by the swinging sorting board 29 and the winnowing machine 37. A relatively lightweight part of the dust is diverted to the dust suction and exhaust chamber 48 through the suction port 46.
It is formed so that it can be sent directly to. Also,
A processing dust exhaust port 53 is provided between the top plate 52 forming the processing chamber 47 and the upper end of the partition plate 51, and a processing dust outlet 53 is provided between the handling teeth 54 of the processing cylinder 43 and the horizontal crosspiece 55 of the concave 44. The dust after the re-threshing process is sent into the dust suction and exhaust chamber 48 through the dust exhaust port 53 and the suction port 46.

On the other hand, there is a large amount of air circulation between the straw cutter chamber 56 having the cutter 14 and the processing chamber 47.
A rear flow grain plate 58 having a gap 57 is provided via a cutting blade table 59. The floating grain board 58 is a structure in which cutting blade stands 59, which are left and right frame plates, are horizontally suspended, and a plurality of straw cutting blades 60 are protruded from the center of the grain board 58 in a horizontal line at intervals. The upper ends of the left and right cutting blade tables 59 are rotatably supported by the threshing side plate 62 via a fulcrum shaft 61, and during normal work, the lower end of the cutting blade table 59 and the threshing side plate 62 are fixed via a locking pin 63. Letting processing cylinder 4
3. While the rear side is covered with the grain flow plate 58, when inspecting the inside of the processing chamber 47 or attaching/detaching the processing cylinder 43 and concave 44, the locking pin 63 is removed from the threshing side plate 62 and the cutting blade table 59 is moved upward. The pin 63 is attached to the hook 64 provided in the cutter chamber 56.
By engaging and holding the processing cylinder 43, the rear part of the processing cylinder 43 is opened.

The concave 44 has a plurality of horizontal beams 55 horizontally mounted on the left and right arc-shaped side frames 65, and can be slid back and forth on guide rails 66 and front and rear guide pins 67a and 67b fixed to the left and right threshing side plates 62, respectively. The side frame 65 is supported. When the concave 44 is installed, the engagement stepped surface 65a formed on the upper surface of the rear end of the side frame 65 is brought into contact with and locked to the rear guide pin 67b, and the cutting blade table is fixedly held by the pin 63. The rear end surface 65b of the side frame 65 is held in contact with the lower front surface of the concave 59 to fix the position of the concave 44.

This embodiment is constructed as described above, and when the grain culms are continuously harvested and threshed, the grains leaking from the crimp net 28 at the lower part of the handling chamber 27 are transferred to the feed van 31, the chaff sieve 33, and the sorting net 34. It falls to the first sorting gutter 39 through the first conveyor 3.
The paddy is taken out to the tank 18 via the grain lifting cylinder 19. Further, the straw waste falling from the crimp net 28 and the dust outlet 32 is sent to the rear along the upper surface of the chaff sieve 33 and the sieving line 35, and is sent to the rear of the processing cylinder 4.
3, and during the movement, some relatively lightweight straw and dust are directly transported to the suction port by the sorting wind from the winnower 37 or the suction wind from the dust suction/exhaust fan 45. 46 into the suction/exhaust dust 48, and the remaining relatively large straw waste, branch kernels, etc. are fed into the processing cylinder 43. The waste dust such as straw waste that has been re-thrested in the processing cylinder 43 is discharged from the processing dust exhaust port 53 to the front of the partition plate 51, and is sent to the dust suction/exhaust fan 45 along with the lightweight dust from the suction port 46. It is discharged outside the machine via. In this way, a part of the dust sent into the processing cylinder 43 is directly discharged to the outside of the machine by the dust suction/discharge fan 45, so that the amount of work in the processing cylinder 43 can be reduced, and the power consumption can be reduced. It is possible to reduce this and also prevent accidents caused by straw clogging.

Therefore, when inspecting and cleaning the inside of the processing chamber 47, the cutting blade stand 59 and the side plate 6 are removed by the pin 63.
2, the lower part of the cutting blade table 59 is rotated upward about the fulcrum shaft 61 as shown by the imaginary line in FIG. Leave the rear open. As a result, the position fixation of the concave 44 by the cutting blade stand 59 is released, and the concave 44 can be pulled out rearward.
4 as well as the upper part of the swinging sorting board 29 can be easily inspected and cleaned. Furthermore, by simply moving the cutting blade table 59 upward to open the rear part of the processing chamber 47, maintenance work such as inspecting or replacing the straw cutting blade 60 or cleaning straw clogging in the processing cylinder 43 can be carried out. It's easy to do.

As is clear from the above embodiments, the present invention has a structure in which an orthogonal processing cylinder 43 is provided at the rear of the processing cylinder 8, and a receiving net 44 is slidably disposed on the lower peripheral side of the processing cylinder 43. A cutting blade stand 59 having a straw cutting blade 60 is rotatably arranged on the rear peripheral side of the processing cylinder 43, and the receiving net 44 is held fixed to the machine body by the cutting blade stand 59. Since the receiving net 44 is configured to be able to be pulled out rearward by rotating the processing cylinder 43 and the receiving net 4,
In addition to making it easier to inspect and clean the inside of the processing chamber 47, which has 4, etc., it is also possible to inspect and clean the cutting blade stand 59 and straw cutting blade 60, and to dispose it below between the handling cylinder 8 and the processing cylinder 43. Inspection and cleaning of the upper part of the oscillating sorting board 29 can be made extremely easy, and each of these functions can be stably maintained, resulting in remarkable effects such as a marked improvement in threshing performance. play.

[Brief explanation of the drawing]

Fig. 1 is an overall side view of a combine harvester showing an embodiment of the present invention, Fig. 2 is a plan view of the same, Fig. 3 is a sectional side view of the threshing section, Fig. 4 is a plan view of the same, and Fig. 5 is an essential part of the combine harvester. It is an enlarged side explanatory view of the section. 8... handling cylinder, 43... processing cylinder, 44... receiving net (concave), 59... cutting blade stand, 60... straw cutting blade.

Claims (1)

[Scope of utility model registration request] In a structure in which an orthogonal processing cylinder is provided at the rear of the processing cylinder, a receiving net is slidably disposed on the lower peripheral side of the processing cylinder, and a cutting blade stand having a straw cutting blade is installed on the rear peripheral side of the processing cylinder. The threshing method is characterized in that the concave is rotatably disposed in the machine body, and the receiving net is held fixed to the machine body by a cutting blade stand, while the concave can be pulled out rearward by rotating the cutting blade stand. Device.