JPH0631879Y2 - Disc-type waste wall cutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a disk-type discharge straw cutter that is provided at the rear of a threshing device such as a combine harvester or a harvester.

[Conventional technology]

Conventionally, a disk-type discharge straw cutter provided in the rear part of a threshing device such as a combine harvester or a harvester is disclosed in, for example, JP-A-55-4.
As disclosed in Japanese Patent No. 2571, in order to improve cutting performance and durability, a disc-shaped feed blade and a scraping wheel are arranged in close proximity to each other with a gap between the feed shaft rotating at a low speed and an axial direction. A large number of sets of blades are arranged side by side at predetermined intervals to form the receiving blades, while a large number of disk-shaped rotary blades are arranged side by side at predetermined intervals in the axial direction on the cutting shaft that rotates at high speed to form the cutting blades. The receiving blade and the cutting blade are arranged so as to face each other with the rotary blade tip of the cutting blade inserted and arranged between the supply blade and the scraping wheel.

[Problems to be solved by the invention]

Since the supply blade of the receiving blade and the scraping wheel are arranged close to each other, the cutting straw is easily wrapped around the shaft portion between the supply blade and the scraping wheel.

Therefore, the applicant of the present invention, as shown in FIG. 6 and FIG. 7, has a supply blade (1) of the receiving blade (2) facing the cutting blade (4) and a scraping wheel.
We have proposed a scraper member (05) that prevents the winding of straws on the part of the supply shaft (6) between (7) and Japanese Patent Application No. 62-1.
24319 (JP-A-63-287422).

However, in the case of this structure, the cutting length of the discharged straw cannot be changed, and therefore when the cut straw is returned to the field when the cut straw is plowed into the field, the cut straw that has been cut into short pieces is discharged. Good, when pouring water in the field, it is not possible to respond to the request to change the cutting length of the discharge straw according to the work situation, as long straws that are cut long and difficult to float are good, There was still room for improvement.

Therefore, in the structure shown in FIG. 6 and FIG.
The pair of supply blades (1) and the scraping wheel (7) at predetermined intervals in the axial direction of (2) are configured with a larger diameter than those of other pairs, and the receiving blade (2) is a scraper. It is possible to change the cutting length of the discharge straw by swinging around the support frame (14) for stopping the rotation of the member (05) and changing the axis between the receiving blade (2) and the cutting blade (4). The scraper member (0
Since the support part (18) for stopping the rotation of (5) is supported at a fixed position, in order to change the length of the straw as described above, the blade
When the supply shaft (6) of (2) is moved to change the axis between the receiving blade (2) and the cutting blade (4), a scraper member (a scraper member having a linear straw discharge guide (24) ( The 05) swings around the support frame (14) and the posture of the scraper member (05) with respect to the cutting blade (4) is changed, so that proper release may not be performed.

The present invention was made by paying attention to the above situation,
Even if the axis between the receiving blade and the cutting blade is changed, the attitude of the scraper member with respect to the cutting blade does not change in the discharging straw cutter that can change the cutting length of the discharging straw and has improved cutting performance and durability. By doing so, the purpose is to enable proper release of the cutting and discharging straw.

[Means for solving problems]

The characteristic configuration of the present invention for achieving the above-mentioned object is to configure a set of a supply blade and a scraping wheel that constitute a receiving blade by gathering a large-diameter group and a small-diameter group, and Arranged at predetermined intervals in the axial direction, the supply shaft of the receiving blade is supported by a switching member that can be swung in and out of the cutting shaft of the cutting blade. By changing the distance between the blade and the shaft, the cutting length of the discharge straw can be changed, and the supply shaft of the receiving blade is supported by a switching member that can be swung with respect to the cutting shaft of the cutting blade. Along with the swinging of the member, the axis between the receiving blade and the cutting blade is changed so that the cutting length of the discharge straw can be changed, and further, the supply shaft between the pair of supply blades and the scraping wheel. A scraper member that prevents the wrapping of straws is fitted on the part so that it can rotate relative to the scraper member. To form a straight straw discharge guide unit along a common tangential to both of the cross-sectional blade,
A switching member for rotatably supporting the supply shaft is provided with a support frame for supporting a rotation preventing support portion provided at one end of the scraper member, and a swinging fulcrum of the switching member is used as the scraper member. It is located near the extension line of the straw discharge guide part, and its action and effect are as follows.

[Action]

The cutting length of the discharge straw can be changed by swinging the switching member to change the distance between the supply shaft and the cutting shaft.

Further, the scraper member is attached to the switching member so as to be able to swing integrally with the switching member, and the swing fulcrum of the switching member is set near the extension line of the scraper guide portion of the scraper member. The change in the posture of the scraper member with respect to the cutting blade is small, and therefore, regardless of the change in the cutting length of the discharge straw due to the change between the axes of the receiving blade and the cutting blade, the cutting straw is moved in the predetermined direction by the scraper member. It can be released while guiding.

[Effect of device]

Since the cutting length of the discharged straw can be changed, when cutting the straw into the field, the short cut straw is good,
When pouring water in the field, it is possible to reduce the cut straws according to the working situation, as long cut straws that are difficult to float are preferred.

Even if the axis between the receiving blade and the cutting blade is changed when changing the cutting length, it is possible to reliably discharge the cutting waste straw in the proper direction and reliably prevent the waste straw from winding around the supply shaft. I can do it now.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a threshing device (19) mounted on a combine equipped with a waste wall cutter (10) at the rear part thereof, and this waste wall cutter (10) is provided at a supply port (above the waste wall cutter (10) ( 11)
By switching the fixed posture of the discharge straw path switching plate (12) pivotally openable and closable to the waste straw after the threshing treatment carried by the discharge straw conveying device (13), the discharge straw cutter (10)
It is possible to switch between a posture of feeding to a waste straw cutter (10) and a posture of sending to a waste straw bundling device (not shown) arranged behind the waste straw cutter (10).

The exhaust wall cutter (10) will be described in detail below.
As shown in FIGS. 2 and 3, the receiving blade (2) and the cutting blade (4) are installed in parallel between the left and right side walls (21), (21) of the cutter cover (15), The cutting shaft (8) of 4) is power-transmitted from the threshing device (19) through a belt-type transmission mechanism, and the reduction blades (25) and (26) of the receiving blade (2). Supply axis
Power is transmitted to (6).

That is, the input shaft (23) from the threshing device (19) and the cutting shaft
The pulleys (27), (27) fixed to (8) are interlocked with the belt, the cutting shaft (8) and the intermediate shaft (28) are interlocked with the chain (29), and the intermediate shaft (28 ) Externally fixed gear (25)
And a gear (26) externally fitted and fixed to the supply shaft (6) are bite-connected. The supply shaft (6) is the intermediate shaft (2
8) It is rotatably supported by a switching member (9) that is pivotally mounted around it, and this switching member (9) is swung to pivot the blades (2) and cutting blades (4). It is configured to be able to change between. Further, the fixing member (30) attached to the switching member (9) is changed in position at the portion of the long hole (31) formed in the side wall (21) and fixed, so that the appropriate position of the swinging movement is obtained. The switching member (9) can be fixed to the side wall (21) with.

Next, the structure of the receiving blade (2) and the cutting blade (4) will be described. As shown in FIG. 2, the receiving blade (2) is a supply shaft (6).
In addition, a disk-shaped supply blade (1) and a scraping wheel (7) are arranged side by side with a spacer (17) in close proximity to each other in the axial direction at a predetermined interval. . On the other hand, the cutting blade (4) is configured by arranging a large number of disc type rotary blades (3) on the cutting shaft (8) side by side at equal intervals in the axial direction via a spacer (22). The tip of (3) is inserted and arranged between the left and right supply blades (1) of the receiving blade (2) and the scraping wheel (7), and in a side view, the tip of the rotary blade (3) and the receiving blade ( 2) and scraping wheel
(7) The tip is designed to overlap. The pair of supply blades (1) and the scraping wheel (7) at predetermined intervals in the axial direction of the receiving blades (2) and the scraping wheel (7) have a larger diameter than those of the other pairs, and as described above. By changing the axis between the receiving blade (2) and the cutting blade (4), the state in which the cutting blade (4) tip is placed close to all the supply blades (1) of the receiving blade (2) The cutting blade (4) is configured so that it can be switched to a state in which the tip of the cutting blade (4) is disposed close to only the supply blade (1) having a diameter. Therefore, in the state where the distance between the supply shaft (6) and the cutting shaft (8) is shortened, as shown in FIG. 5, the tip of the supply blade (1) and the tip of the cutting blade (4) are close to each other.
Since the adjacent space of (16) is shortened, the discharge straw can be cut short, and when the shafts are lengthened, the discharge straw can be cut long as shown in FIG.

Between the supply blade (1) and the scraping wheel (7), a resin plate-shaped scraper member (5) is fitted on the supply shaft (6) so as to be relatively rotatable. Then, at the front position of the blade (2) on the airframe, the support frame is parallel to the blade (2).
(14) is installed, and the fitting portion (20) of the scraper member (5)
The support groove (3) extending toward the front of the machine
The support frame (14) is engaged with 2) to prevent the scraper member (5) from rotating around. Further, a linear straw discharge guide portion (24) is integrally extended downward from the fitting portion (20) of the scraper member (5), and the guide portion (24) is provided on the supply blade (1). Projected downward from the blade tip, there is a set clearance angle between the guide surface (24a) of this guide portion (24) and the cutting surface (1b) of the blade body (1a) formed on the supply blade (1). Has been formed.

Next, when changing the cutting length of the discharge straw by changing the axis between the receiving blade (2) and the cutting blade (4), as shown in FIG. 3, the switching member (9) is changed to the scraper member ( It is rocked around the intermediate shaft (28) as a rocking fulcrum set near the extension line of the straw discharge guide part (24) of (5), but at that time, together with the blade (2), the scraper member ( The clearance angle does not change when 5) moves, and the cutting blade of this scraper member (5)
There is little change in posture with respect to (4), so
The discharge straw supplied between the receiving blade (2) and the cutting blade (4) is cut by the supply blade (1), the scraping wheel (7) and the cutting blade (4), and then the cutting blade (4 ), It is guided downward along the linear straw discharge guide surface (24a) of the scraper member (5) and dropped downward without wrapping around the scraper member (5).

Further, the guide portion (24) of the scraper member (5) is a supply blade (1)
Since it protrudes further downward, it becomes difficult to wind around the outer periphery of the fitting portion (20) of the scraper member (5) even with a relatively long discharge straw, and therefore, it will fall in an extended state.

In the above embodiments, the waste straw cutter is provided in the combine harvester, but it may be provided in another harvester such as a harvester.

It should be noted that reference numerals are added to the claims of the utility model for convenience of comparison with the drawings, but the present invention is not limited to the structure of the accompanying drawings by the entry.

[Brief description of drawings]

The drawings show an embodiment of a disk type discharger cutter according to the present invention. FIG. 1 is a vertical sectional side view of a main part, FIG. 2 is a cross-sectional plan view of the main part, FIG. 3 is a schematic side view, and FIG. FIG. 5 is an explanatory view of a case of cutting a long length, FIG. 5 is an explanatory view of a case of cutting a discharge straw shortly, FIG. 6 is a vertical sectional side view showing a conventional structure, and FIG. 7 is a transverse plan view thereof. (1) …… Supply blade, (2) …… Receiving blade, (3) …… Rotating blade, (4) ……
Cutting blade, (5) …… Scraper member, (6) …… Supply shaft, (7)
…… Scraping wheel, (8) …… Cut shaft, (9) …… Switching member, (14) …… Support frame, (16) …… Cut part, (18) ……
Supporting part, (20) …… Mating part, (24) …… Guide part.

Claims (1)

[Scope of utility model registration request] 1. A disc-shaped feed blade on a feed shaft (6) rotating at a low speed.
In the state where the (1) and the scraping wheel (7) are arranged close to each other with a gap, a large number of sets of blades are provided side by side with a predetermined gap in the axial direction.
(2) is configured, and a cutting blade (4) is formed by arranging a large number of disk-shaped rotary blades (3) on the cutting shaft (8) that rotates at high speed in the axial direction at predetermined intervals. The receiving blade (2) and the cutting blade (4) face each other with the tip of the rotary blade (3) of the cutting blade (4) inserted and arranged between the supply blade (1) and the scraping wheel (7). In the disk-type exhaust wall cutter that is arranged, the set of the feed blade (1) and the scraping wheel (7) that constitute the receiving blade (2) are gathered together into a large-diameter group and a small-diameter group. In addition, the large and small sets are arranged at predetermined intervals in the axial direction, and the supply shaft (6) of the receiving blade (2) oscillates with respect to the cutting shaft (8) of the cutting blade (4). Support the free switching member (9) and receive the blade as the switching member (9) swings.
(2) and the cutting blade (4) by changing the axial distance to configure the cutting length of the discharge straw can be changed, further between the pair of supply blades (1) and the scraping wheel (7) A scraper member (5) that prevents the winding of straws is externally fitted to the supply shaft (6) part in the above so that the scraper member (5) has a receiving blade (2) and a cutting blade (4).
And the scraper member (5) on the switching member (9) that rotatably supports the supply shaft (6) while forming a linear straw discharge guide portion (24) along a common tangential direction to both A support frame (14) for supporting a rotation preventing support (18) provided at one end of the switching member (9) is provided, and the swing fulcrum of the switching member (9) is guided by the straw discharge member of the scraper member (5). Disc-shaped waste wall cutter set near the extension of part (24).