JPS5817396Y2 - Straw cutting device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a straw cutting device attached to a combine harvester or the like for shredding waste straw discharged from a threshing device.

As this kind of straw cutting device, Utility Model No. 53-16507
There is a straw cutting device in the No. 2 automatic threshing machine.

In this device, the straw supply side of the pair of rotary blade shafts is designed to supply straw to the cutting area between the rotary blade shafts in a nearly horizontal position, and to uniformly supply the straw to the gold mine and perform the cutting action smoothly and reliably. A clamping plate 6 is provided at the top, but its purpose cannot be fully achieved due to changes in the amount of straw supplied, and especially when the amount supplied is not small, the phenomenon of entrainment on the tip side may occur. There was a problem.

In order to solve the above-mentioned problems of the prior art, the present invention feeds waste straw to the cutting area of a rotary blade type cutting device in an attitude almost parallel to the axis of the rotary blade, regardless of the increase or decrease in the amount of waste straw supplied, and removes waste straw. The purpose is to always perform the straw cutting action smoothly and reliably.

The present invention provides a second
A plurality of guide plates are provided facing the outer periphery of the second rotary blade of the rotary blade shaft, and the one located in the center of the rotary blade shaft is used as a moving guide plate, and the tip of the moving guide plate is used as the movable guide plate. The present invention provides a straw removing straw cutting device characterized in that a movable guide body is constructed by attaching a movable guide plate to a cutter case via elastic means that can be operated in any direction.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

The straw cutting device 1 is fixed to a threshing device 2 such as a combine harvester via a support plate 3, and is connected to an extension of the husk feeding device of the threshing device 2 or a conveying chino 4 and a pressing rod connected by a foot chain or the like. The terminal end of the straw conveying device 6 consisting of the straw conveying device 5 extends above the supply port 8 on the upper surface of the canter case 7.

Inside the cutter case γ, a pair of rotary blade shafts 9 and 10 are horizontally suspended in a parallel state.
The rotary blade shaft 9 is located on the straw removal conveying device 6 side, and the second rotary blade shaft 10 is a rotary blade shaft 9. A plurality of first rotary blades 11 are mounted on the first rotary blade shaft 9 at predetermined intervals. Star wheels (raking bodies 13) are attached to the rotary blade shaft 10 along with a plurality of second rotary blades 12 at predetermined intervals, and are connected to the power input pulley of the threshing device 2 via an appropriate transmission mechanism. The rotary blade shafts 9 and 10 are rotated in the direction of the arrow f, respectively, and the second
The rotary blade shaft 10 is located slightly above or at the same height as the first rotary blade shaft 9 and rotates at a low speed, whereas the first rotary blade shaft 9 rotates at a high speed.

A plurality of guide plates 14at14b are arranged vertically in parallel above the first rotary blade shaft 9, and the kite plate 14a,
The working edges 14' of 14b are opposed and the working edges 14' and the second
The distance 15 between the rotary blade 12 and the rotary blade 12 is a gap through which the straw in a horizontal position can pass.

The guide plates 14a and 14b are located at the center (above) of the rotary blade shaft 9.
The one located at is the movable guide plate 14a, and the remaining one (
In other words, the fixed guide plates 14b are those located on both sides.

That is, the fixed guide plate 14b is connected to the rear wall 7 of the counter case 7.
The rear edges of the plurality of movable guide plates 14a near the center are integrally fixed to the support plate 16, and the support plate 16 has a plurality of elastic plates (plate springs etc. 17). A movable guide body 18 is fixed to the rear wall 7a of the canter case 7 via the movable guide body 18.

The attached state of the leaf spring 11 is as shown in FIG.
A locking protrusion 19 is provided on the rear side, and a plate spring 17 is provided with an engaging elongated hole 20 that cannot be slid vertically with the locking protrusion 19 but can freely slide a predetermined distance in the horizontal direction. The locking protrusion 19 is inserted into the engagement elongated hole 20, and the rear end of the leaf spring 17 is attached to the rear wall 7a of the canter case 7 with bolts etc. so that the spring is in a substantially horizontal position. .

A plurality of leaf springs 17 are installed in an X-shaped relationship when viewed from above, and the movable guide body 18 is attached to the first rotary blade shaft 9.
It becomes flexible in the vertical direction (arrow m) yc-.

Movement guide plate 14 of movable guide body 18 in no-load state
The working edge 14a' of the counter case 1 is connected to the rear wall 7a of the canter case 1.
Working edge 14 of another fixed guide plate 14b directly fixed to
It is located closer to the second rotary blade shaft 10 than the position b'.

Note that a spring may be used in place of the leaf spring 1γ, or a U-shaped leaf spring may be installed (of course, a rubber-like elastic material may also be used).

Next, the action will be explained.

The shell culm that has been threshed in a horizontal position by the threshing device 2 becomes waste straw M, which is transferred to the extension part of the shell culm supply device or the waste straw transport device 6
The cutter case γ is transported in a substantially horizontal position to the supply port 8 on the upper surface of the cutter case γ, and is then dropped and supplied into the cutter case γ in a horizontal position.

The fallen and supplied waste straw M is scraped by the star foil 13 of the second rotary blade shaft 10, and the second rotary blade 12 and the active edges 14a' of the guide plates 14a and 14b are moved.

14b' and is scraped up to the cutting point A. As shown in FIG. In the t direction, elastic force is applied by the leaf spring 11 to an extent that does not impede the transfer of the waste straw M to the cutting action point A, so that the waste straw M is supplied to the cutting action point A while being held in a horizontal position, and the tip is There is no need to bring in Mb, and the cutting length of the waste straw M can be made uniform.

That is, for the normal amount of culm, the fixed guide plate 14b and the movable guide plate 14a adjust the attitude of the culm over almost the entire length, but when the amount of the culm decreases, the movable guide plate is adjusted by the action of the elastic means. The kite plate 14a protrudes from the fixed kite plate 14b and presses the center of the grain culm to adjust the posture and prevent the tip side from being entangled.

As mentioned above, the present invention is a straw removal cutting device in which a pair of rotary blade shafts are horizontally mounted, and a second rotary blade is equipped with a scraping plate together with the rotary blades, which performs both the cutting action and the scraping action. When a plurality of guide plates are provided facing the outer circumferential edge of the second rotary blade of the shaft, the central one of the guide plates is attached to the canter case via elastic means to serve as a moving guide plate and the remaining guide plates are used. is fixed to the cutter case as a fixed kite plate, and in a no-load state, the movable guide plate is configured to protrude in the direction of the axis of the second rotary blade beyond the fixed guide plate by the action of the elastic means, so that the movable guide plate is configured to protrude in the direction of the axis of the second rotary blade relative to the fixed guide plate. As a result, the elastic action of the elastic means changes, and the central guide plate, that is, the moving guide plate, moves, and the straw is always kept in a stable horizontal position.

That is, for a normal shell culm, the fixed guide plate and the movable guide plate act almost equally on almost the entire length of the shell culm to adjust its posture.

On the other hand, when the culm decreases, the movable guide plate protrudes and presses the center of the culm to adjust its posture and prevent the tip side from getting trapped.

Further, since the moving guide plate is provided only in the central portion, the width of the elastic means is reduced, the structure is simplified, and manufacturing costs can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of a straw removal cutting device according to the present invention installed at the rear of a combine harvester, etc., and Fig. 2 is a plan view of the straw removal cutting device with the top cover of the straw removal cutting device removed. , FIG. 3 is a sectional view II of FIG. 2, and FIG. 4 is an explanatory diagram of the operation of the present invention. 1... Straw removal cutting device, 9... First rotary blade shaft, 10... Second rotary blade shaft, 12...
・Second rotary blade, 13... Star foil, 14a
, 14b...Kite plate, 141...Working edge, 1T...Elastic body (plate spring, etc.), 18...
・Movable guide body.

Claims (1)

[Scope of utility model registration request] A pair of rotary blade shafts with a plurality of rotary blades mounted at predetermined intervals are mounted horizontally in the case, and a straw supply port is provided on the top surface.
A straw removal cutting device is provided with a plurality of guide plates having working edges facing the rotary blade of a second rotary blade shaft equipped with a rotary blade and a scraping plate, wherein one of the plurality of guide plates The movable guide plate is located at the center of the rotary blade shaft, and the stationary guide plate is located at other parts of the rotary blade shaft, and in a no-load state, the tip of the movable guide plate is placed on the opposing rotary blade shaft side. This straw removal cutting device comprises a movable guide body which is constructed by attaching a movable guide plate to a cutter case via an elastic means that acts elastically so as to protrude from a fixed kite.