JPS6031468Y2 - Straw shredding discharge device in combine harvester - Google Patents

Description

[Detailed description of the invention] The present invention relates to a shredding and discharging device for waste straw in a combine harvester that cuts the waste straw that is threshed in the handling chamber of the thresher and is discharged from the straw removal port and discharges it outside the machine. be.

This type of conventional waste straw shredding discharge device simply drops and discharges the waste straw shredded by the shredding device, so the discharge device has a downward falling space and a projecting shape at the rear of the threshing machine. It must be provided in a so-called overhang shape,
Therefore, these shredding discharge devices protrude behind the sorting chamber of the threshing machine, increasing the overall length of the machine, and the protruding length from the rear end of the running rollers increases to keep the overall length of the combine within specified dimensions. Not only is it difficult to do this, but the weight tends to be heavier on the rear side of the aircraft, resulting in a high degree of pitching during running, which reduces running performance, and when turning, etc., the rear protrusion is affected by the turning radius of the crawler. It was dangerous because it required a large turning radius.

The present invention was devised to eliminate the above-mentioned drawbacks, and the waste straw shredding device is designed to simultaneously shred the waste straw discharged from the discharge port along the culm direction. The shredded straw is combined with a forced ejection device with a bottom plate that rotates in a substantially horizontal direction and is installed in parallel along the culm direction of the waste straw, forming a shredded ejection device with a low overall height. It is an object of the present invention to provide a shredded straw discharge device for a combine harvester, which can minimize the increase in the length of the combine machine by storing the discharge device in a space formed above a sorting chamber.

The structure of the present invention will be described with reference to an embodiment shown in the drawings. 1 is a pre-processing section of a combine harvester, 2 is a running roller,
Reference numeral 3 denotes a threshing machine, and a threshing section 4 of the threshing machine 3 is equipped with a handling barrel (not shown) that is pivoted in the longitudinal direction of the machine. A foot chain 5 is constructed along the line.

Reference numeral 6 denotes a sorting section provided below the threshing section 4 and protruding rearward from the rear end surface 4a of the threshing section 4, and the sorting section 6 is communicated below the handling barrel (not shown). ing.

Reference numerals 7 and 8 denote rotary blade bodies that are suspended horizontally in a space A formed above the sorting part 6 behind the straw outlet, that is, behind the terminal end of the foot chain 5; 7 and 8 are arranged parallel to each other in the left and right direction of the body along the culm direction of the culm.
Each rotary blade body 7, 8 has a large number of blades 7a in the direction of the culm.
7a... and 8a, 8a... are arranged in a row.

The rotary blade body 7 is rotatably driven by a main pulley 9 provided at one end of its main shaft 7b.

The rotary blade body 8 is connected to the rotary blade body 7 via gears 7c, 7c.
The straw removal belt 10 is installed diagonally from the end of the foot chain 5 toward the upper side of the rotary blade bodies 7 and 8, and the straw is guided to the blade plate. 7a.

The culm of the excised culm can be simultaneously shredded into a plurality of pieces along the culm direction at the overlapping part of 7a, 8a, and 8a.

Reference numeral 11.11 denotes a scraping blade constituting a discharge device provided directly below the rotary blade 7.8, and the scraping blade 11. If
A plurality of blades are arranged in parallel along the culm direction, and are rotated horizontally to discharge the cut straw from the rotary blades 7 and 8 to the rear of the machine.

That is, 11a, 11a are vertical rotational shafts of the scraping blades 11.11, and the rotational shafts 11a, 11a are connected to a bottom plate 17 with an open upper surface in a substantially horizontal direction provided above the protruding sorting section 6.
The pulleys 12 and 12 protrude further downward, and the lower ends thereof are provided with pulleys 12 and 12, respectively.
A transmission belt 14 is wound between these pulleys 12, 12 and a drive pulley 13.

The drive pulley 13 is transmitted to the main shaft 7b via bevel gears 15 and 16, and the scraping blades 11.11 are configured to rotate in the horizontal direction.

In this way, the rotary blades 7, 8, the scraping blades 11, 11, and the transmission mechanism for the scraping blades 11, 11 are approximately accommodated in the space above the sorting section 6 and within the height of the threshing machine 3. provided in the state.

Further, reference numeral 18 denotes a cover that hermetically covers the rotary blade bodies 7 and 8, and the back surface of the cover 18 is configured to be openable and closable.By opening the back surface, the cover 18 can be attached to and detached from the straw removal belt 10. By attaching the straw removal belt 19, the straw after threshing can be directly discharged from the rear of the machine without being cut by the rotary blade 7.8.

Note that 20.21 is a belt tightener in the transmission mechanism of the scraping blades 11.11.

Next, the operation of the present invention constructed as described above will be explained.

When cutting and discharging the waste straw after threshing, if the removable straw removal belt 19 is removed from the straw removal belt 10 in advance, the husks cut and conveyed in the pre-processing section 1 can be held in the foot chain 5. During this time, the straw is threshed and becomes waste straw.The waste straw is transferred from the end of the foot chain 5 to the straw removal belt 10, and is conveyed backward by the straw removal belt 10, and the straw is removed. The culm core is made parallel to the rotary blade bodies 7 and 8, and falls between the rotary blade bodies 7 and 8, and is cut at the overlapping part of the rotary blade bodies 7 and 8, which rotate in opposite directions, and the cut straw is falls onto the scraping blades 1f and 1H directly below the rotary blade bodies 7 and 8, and is horizontally discharged to the rear of the machine by the horizontal rotation of the scraping blades 11 and 11.

In this way, the cut straw cut by the rotary blades 7, 8 is forcibly discharged to the rear of the machine by the scraping blades 11, 11 below the rotary blades 7, 8, so that the rotary blades 7, 8 sort the straw. Even if it is provided above the section 6, the cut straw can be discharged to the outside of the machine without any problem.

The scraping blades 11 and 111 of the discharge device rotate in the horizontal direction, and the transmission mechanism thereof can be interposed between the bottom plate 17 and the sorting section 6, so that straw debris etc. do not enter this part. There is no chance that straw or other debris will get wrapped around the transmission mechanism, causing malfunctions.

For this reason, it is possible to configure the transmission mechanism with a simple belt transmission mechanism with a low vertical height as in this embodiment, and this and the fact that the shredded waste straw can be guided and discharged in one place. Instead, it can be forcibly discharged over the entire width of the culm, eliminating the need for a guide plate for concentrating the concentration.
11, the height of the entire device can be reduced.

Furthermore, since a plurality of scraping blades 11° 11 are arranged in parallel in the culm direction, the diameter of the scraping blades 11 can be made small without increasing the diameter beyond the length of the straw, and the longitudinal length of the device can be shortened. The entire apparatus can be compactly stored on the bottom plate 17 by effectively utilizing the space A above the sorting section 6.

In addition, since the casings 17 of the raking blades 7 and 8 are formed so as to be completely open from above, straw waste generated at the end of the foot chain 5 falls toward the raking blades 11 and 11, but Because the suction wind excited by the rotation of the blades 11 and 11 actively sucks straw, dust, etc. not only from the terminal end of the foot chain 5 but also inside the sealed space A and discharges it backward, the foot chain 5 There is no clogging of straw waste or the like in the terminal end or the space A, and there is no generation of straw waste or the like in gaps in the cover 18, allowing sanitary work to be carried out.

In addition, if the back of the cover 18 is opened and the removable straw removal belt 19 is attached in a continuous manner to the straw removal belt 10, the waste straw from the threshing section 4 will be guided to fall to the rear of the machine without being cut. It is something that

In short, the present invention projects a sorting chamber provided below the position of the straw discharge port opened at the end of the handling chamber of the threshing machine to form a space above the sorting chamber. A shredding device that simultaneously shreds the waste straw discharged from the straw opening into multiple pieces along the culm direction is installed. A plurality of shredded straw discharge devices that rotate are arranged in parallel along the culm direction of the waste straw, so the waste straw shredder discharge device can simultaneously shred the waste straw along the culm direction. In addition to adopting a type of shredding device with a low target height, the discharge device is of a type that can be lowered in height by rotating horizontally on a substantially horizontal bottom plate installed above the sorting chamber below the shredding device. In addition, multiple discharge devices are installed in parallel along the culm direction of the waste straw, eliminating the need for guide plates that increase the vertical height unlike those that concentrate discharge in one place. Furthermore, the discharge device is partitioned by the lower bottom plate so that the shredded straw does not fall out.
For the transmission mechanism of the horizontally rotating discharging device, it is possible to use a mechanism that can reduce the vertical height, such as a belt transmission mechanism, at the bottom of the bottom plate, making it possible to configure the shredded discharging device with a low overall height. The discharge device that rotates in the upper horizontal direction is arranged in parallel along the direction of the culm that is discharged from the straw outlet, so the rotating diameter of the device itself is larger than the length of the culm. It is possible to reduce the length of the whole shredding discharge device by making it small in diameter without the need to do so, and therefore, the space on the bottom plate above the sorting chamber can be used to store the shredding discharge device. The length of the shredding discharge device protruding to the rear of the sorting chamber is minimized so that the length of the combine harvester can be minimized.

[Brief explanation of the drawing]

The drawings show an embodiment of the waste straw shredding and discharging device for a combine harvester according to the present invention, in which FIG. 1 is a partially cutaway overall plan view of the combine, and FIG. 2 is a partially cutaway overall side view. , FIG. 3 is a plan view of the main part, and FIG. 4 is a side view. In the figure, 1... pre-processing section, 3... threshing machine, 6... sorting section, 7, 8... rotary blade body, 11... . . . scraping blade, 17 . . . bottom plate.

Claims (1)

[Scope of utility model registration request] A sorting chamber provided below the straw outlet opening opened at the end of the handling chamber of the thresher is protruded to form a space above the sorting chamber, and the waste straw discharged from the straw outlet is placed in the space. A shredding device that simultaneously shreds multiple pieces along the culm direction is installed, and a shredded straw discharge device that rotates horizontally is installed on a nearly horizontal bottom plate installed above the sorting chamber below the shredding device. A waste straw shredding discharge device for a combine harvester, characterized in that a plurality of the following are arranged in parallel along the culm direction of the waste straw.