JPH0549247B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to an ordinary type (general-purpose type) combine harvester, which can be used for harvesting rice, wheat, etc. [Prior Art] A conventional combine harvester of this kind is equipped with a reel at the front of the machine body for scraping uncut grain culm backwards, a cutting blade device below the reel for reaping the grain culm, and a reel for harvesting grain at the rear of the cutting blade device. A raking rotating body is provided to collect and convey the grain culms toward the center in the lateral direction, and an endless conveyor and a conveyor are provided between the raking rotating body and the rear threshing section to receive and convey the collected grain culms. A conveying device consisting of a case is provided, and the grain culm cut by the cutting blade device is conveyed and supplied into the handling chamber of the threshing machine via the rake-feed rotary body and the conveyor, and between the handling barrel and the threshing net in the handling chamber. The threshing process is carried out while moving the grain in the axial direction of the handling cylinder. A conventional combine harvester equipped with a thresher so that the axis of the handling trunk faces forward and backward is known, for example, from US Pat. No. 3,995,645. Furthermore, it is known from Japanese Patent Publication No. 39-16318 that in a conventional combine harvester equipped with a threshing machine so that the axis of the handling trunk faces forward and backward, the conveying device is made narrower than the width of the threshing device. It is being

[Problem to be solved by the invention]

However, in the former conventional structure, the passage interval between the conveyor and the bottom wall of the conveyor case is narrower than the interval between the threshing cylinder and the threshing net in the handling chamber of the threshing machine. It is unclear whether the conveying device consisting of the conveyor and the conveyor case is narrower than the width of the threshing device. In addition, in the case of the latter conventional structure, although the conveyance device that transports and supplies the harvested grain culm into the handling chamber of the threshing machine is narrower than the width of the threshing machine, Because it is placed off-centered to only one side of a certain handling barrel axis, the grain culms sent into the handling chamber are poorly captured and concentrated only on one side of the handling chamber, resulting in an excessive threshing load. This caused a problem that led to a decrease in efficiency. The present invention aims to eliminate the deficiencies of the conventional combine harvester described above. [Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention takes the following technical means. That is, the spiral blade 2 rotates around the axis in the front-rear direction and has a spiral blade 2 at least on the front end side.
A thresher 7 includes a handling barrel 19 having a diameter of 0 and a threshing net 16 stretched along at least the lower half of the handling barrel 19, a cutting blade device 61 for reaping the standing grain culm, and a cutting blade device 61 for reaping the grain culm after reaping. Conveyance consisting of a raking rotary body 55 that rakes rearward after horizontally feeding, an endless conveyor 59 that receives the raked grain culms and conveys them to the threshing machine 7 at the rear, and a conveyor case 60 that covers the conveyor 59. A combine harvester comprising a device 58,
The conveying device 58 is narrower than the width of the threshing machine 7, and is arranged so that the conveying path exit of the conveying device is located across both left and right sides sandwiching the axis of the handling cylinder 19. The passage interval A between the conveyor 59 and the bottom wall 60a of the conveyor case is configured to be narrower than the threshing passage interval B between the handling cylinder 31 and the threshing net 16 in the handling chamber 8 of the threshing machine 7. It is characterized by this. [Operations and Effects] Therefore, according to the present invention, the width of the endless conveyor 59 is controlled by the handling cylinder 19 rotating around the longitudinal axis.
Because it is narrower than that of a threshing machine equipped with
The grain culms sent from the endless conveyor 59 do not spread out and stagnate at the entrance of the wide handling chamber of the threshing machine from the narrow endless conveyor, and are reliably taken in by the spiral blades 20 on the front end side of the handling cylinder 19. is possible,
Threshing processing performance can be further improved. Moreover, the width of the conveyance device is not only narrower than that of the handling chamber in which the handling cylinder is pivoted in the front-rear direction, but also the conveyance path exit of this narrow conveyance device is narrower on both the left and right sides sandwiching the axis of the handling cylinder. Since the grain culms are arranged so as to straddle the sides, the grain culms supplied into the handling chamber are evenly distributed within the rotation range of the spiral blades at the starting end of the handling drum, and the uptake effect by the handling drum is even better. This eliminates the occurrence of clogging due to excessive load, which occurs when the supply is concentrated only to one side of the handling chamber as in the past. In addition, the conveyor 59 and the bottom wall 6 of the conveyor case
The passage interval A between 0a and the threshing passage interval B between the handling drum 19 and the threshing net 16 in the handling chamber 8 of the threshing machine 7
Since the endless conveyor is narrower than the width of the handling chamber of the threshing machine, this also prevents grain culms from being oversupplied into the handling chamber and causing clogging, allowing the threshing process to be carried out with plenty of time. can be processed,
We were able to improve the efficiency of our work. [Embodiment] Reference numeral 1 denotes a running vehicle body, and running crawlers 2, 2 are mounted on both left and right sides of the lower part. Reference numeral 3 denotes a prime mover, which is mounted on the right front upper part of the traveling vehicle body 1. 4 is the output shaft of the prime mover. Reference numeral 5 denotes a pilot's seat, which is provided above the prime mover 3. 6 is a cockpit enclosure frame surrounding the left side and front side. Reference numeral 7 denotes a threshing machine, in which a handling chamber 8 is located at the upper right side of the traveling vehicle body 1, a sorting chamber 9 is located at the lower part thereof, and a grain storage section 10 for temporarily storing and discharging grains at the upper left side.
It is installed so that it is located. The handling chamber 8 is long in the front-rear direction, and has a bearing frame 11 for the handling barrel shaft in the middle on its front end side.
Grain culm supply ports 12 and 13 are provided at the lower and upper portions, respectively, a culm discharge port 14 is provided at the upper portion of the rear end, a dust exhaust port 15 is provided at the lower portion, and a threshing net 16 is provided at the bottom.
A lattice frame 17 continues behind it, and furthermore, a fork 18 protruding rearward is stretched in an arc shape. Reference numeral 19 denotes a handling barrel, the front end of which is shaped like a cone, and this cone-shaped part is provided with a spiral blade 20 for feeding the grain culm backwards, and the cylindrical part behind the cone-shaped part has handling teeth. 21 is installed. 22 is a handling cylinder shaft, which includes a front bearing frame 11 and a rear side frame 23.
The handling cylinder 19 is fixedly attached to the front bearing 11, and the front bearing 11 is rotatably driven by a transmission gear box 24 provided outside the front bearing 11. Reference numeral 25 denotes a handling port, which is provided at the upper left side of the handling chamber 8 with a predetermined vertical width along the axial direction of the handling cylinder. 26 is a feed chain stretched along the outside of the handling port 25. The sorting chamber 9 is provided at the lower part of the handling chamber 8, and has a pressure winch 27 at the front end, and a first transfer spiral gutter 28 and a second transfer spiral gutter 29 from the front at the rear and bottom of the winch 27. A sorting swing shelf 30 is installed above these. 31 is a straw removal chain, and 32 is a cutter. Reference numeral 33 denotes a grain culm supply channel, which projects forward from the grain culm supply port 12 at the lower front end of the handling chamber 8;
The rear, top, and bottom are surrounded by iron plates, and the front side of the bottom plate is shaped like an arc. Reference numeral 34 denotes a raking device, in which a plate body 36 extending in the horizontal direction is integrally fixed via a frame body to a rotating shaft 35 that is horizontally suspended in the grain culm supply pipe 33 and rotated. be. Reference numeral 46 denotes a suspension arm to which the reaping pre-processing section 52 is attached so as to move up and down. Next, to explain about the reaping pre-processing part side, the reaping pre-processing part 52 is provided with a weed splitting body 53 at both the left and right ends, a reel 54 is provided above between them, and a transfer spiral part A and a crank finger at the rear lower part thereof. In order to form a grain culm scraping passage 57 that connects to the upper left end of the bucket and extends rearward and upward, a bucket 56 is provided in which a rotary body 55 having a portion and a rotor 55 is fitted.
An endless conveyor 59 having lug bodies 59a attached at a predetermined interval between the scraping rotary body 55 and the threshing machine 7, and a conveyor case 60 covering the endless conveyor 59.
The conveyor 59 and the bottom wall 60a of the case 60 form the grain culm scraping passage 57, and a lug body 59a is provided on the bottom wall of the passage.
The grain culms in the bucket 56 are scraped up by sliding contact therewith. Further, a cutting blade device 61 is provided at the lower front side of the bucket 56. The conveyor device 58 has a width D ₂ of the conveyor case 60 narrower than a width D ₁ of the threshing machine 7, and the conveyor 59 at least at the start end of the conveyor case 60 and the bottom wall 60a of the conveyor case 60. The passage interval A between the threshing machine 7 and
The threshing passage interval B between the handling cylinder 31 and the threshing net 16 in the handling chamber 8 is made narrower. Next, the operation of the above example will be explained. First, when cutting wheat or harvesting and threshing very short culm rice or soybeans, the prime mover 3 drives each rotating part to move the machine forward. Then, the standing grain culms in the field are felled into the bucket 56 by the rotation of the reel 54, and the crop base is cut off by the cutting blade device 61. Therefore, the harvested grain culms are stored in the bucket 56, and the grain culms on the right side and the left end in the bucket are transferred to the grain culm scraping passage 5 by the transfer spiral part A.
It is transferred to the part where the starting end of No. 7 is located, and is raised rearward and upward by the crank finger part RO located in this part. Subsequently, the cut grain culm is conveyed along the bottom surface of the grain culm scraping passage 57 by the lug body 59a of the endless conveyor 59, and is supplied into the scraping chamber from its terminal end. Then, the rotary plate 36 of the scraping device 34 scrapes the grain toward the starting end of the handling chamber 8 of the threshing machine 7, and the helical blade 20 of the handling barrel 19 securely takes it into the handling chamber. When the entire grain culm is supplied into the handling chamber 8 in this way, it is threshed by the rotation of the handling drum 19, and the grains pass through the threshing net 16 and are placed on the swing sorting shelf in the lower sorting chamber. The grains are sorted by the sorting air from the pressure winch 27, transferred from the first transfer spiral gutter 28 to the right end of the threshing machine, are sent up by an elevator as appropriate, and are discharged to the grain removal section 10 side. In addition, the second grain that has not been completely threshed or has straw waste mixed in with it enters the second transfer spiral gutter 29,
These are returned to the handling chamber 8 by a second thrower (not shown). Furthermore, the threshed grain culms and large straw waste are directly discharged from the dust outlet 15 at the lower rear end of the handling chamber 8 to the upper part of the cutter 32, and are also discharged from the swinging sorting shelf 3 of the sorting chamber 9.
The large straw waste sent out at 0 is also cutter 32.
It is discharged to the upper part of the machine, cut into small pieces by the cutter 32, and discharged outside the machine.

[Brief explanation of the drawing]

The drawings show embodiments of the invention,
FIG. 1 is a side sectional view of a conventional combine harvester, and FIG. 2 is a plan view thereof. 1... Traveling vehicle body, 7... Threshing machine, 8... Handling room,
16... Threshing net, 19... Handling cylinder, 52... Reaping pre-processing section, 54... Reel, 55... Scraping rotary body, 58... Conveying device, 59... Endless conveyor,
60...conveyor case, 61...mower blade device.

Claims (1)

[Claims] 1 A handling drum 19 that rotates around a longitudinal axis and has a spiral blade 20 at least on the front end side, and a threshing net 1 is provided along at least the lower half circumference of the handling drum 19.
a threshing machine 7 with a grain culm stretched over it, a cutting blade device 61 for reaping the standing grain culm, a raking rotary body 55 for laterally feeding the harvested grain culm and then raking it rearward, and a raking feed rotary body 55 for receiving the raked grain culm. The combine harvester is equipped with a conveyor device 58 consisting of an endless conveyor 59 that conveys and supplies the threshing machine 7 to the rear threshing machine 7 and a conveyor case 60 that covers the conveyor 59. is also narrow, and the conveyance path exit of the conveyance device is arranged so as to be located across both left and right sides sandwiching the axis of the handling cylinder 19, and between the conveyor 59 and the bottom wall 60a of the conveyor case. The passage interval A is the handling cylinder 1 in the handling chamber 8 of the threshing machine 7.
9 and the threshing net 16, the combine harvester is configured to be narrower than the threshing passage interval B between the threshing net 9 and the threshing net 16.