JPS60768Y2 - Combine harvester culm transfer switching device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to (1) a device for switching the direction of conveyance of the exhaust culm of a combine harvester;

That is, the combine is provided with a waste culm cutting device near the outlet side of the waste culm transfer device, and an exhaust that directly discharges the waste culm backwards on the rear wall of the upper cover that covers the upper wall of the waste culm cutting device. Although a culm outlet is provided, this invention relates to a switching device for the direction of conveyance of the culm, which can select whether to cut and discharge the culm or to directly discharge the culm after cutting.

The purpose of this invention is to enable the above-mentioned combine harvester to be used more efficiently and safely, to enable the transfer direction of the culm to be switched to the culm cutting device side or to the culm outlet side with a single touch, and to improve the structure. The objective is to provide an extremely simple culm transfer direction switching device.

This invention will be explained below based on embodiments shown in the drawings.

In this specification, the front refers to the left side of Figure 1, the rear refers to the right side of the figure, the left refers to the lower side of Figure 2, and the right refers to the upper side of the figure. First, based on Figure 1, The structure near the rear of the combine harvester will be explained as follows.

That is, a culm cutting device 9 is removably attached to the rear of the combine 1, and an upper cover 2 having a roughly tap-shaped cross section is placed above the combine 1 and the culm cutting device 9. There is.

. A culm outlet 3 for discharging the culm A to the rear as it is is formed on the rear wall of the upper cover 2.

Further, on the left side of the upper cover 2, a discharge culm transfer device 4 is disposed.

The exhaust culm transfer device 4 includes an exhaust culm transfer conveyor 5 whose outlet end protrudes rearward from the upper cover 2, and the conveyor 5.
A guide rail 6 extends below the conveyor 5 to the intake port 12 of the culm cutting device 9, and a culm transfer passage 7 is formed between the conveyor 5 and the guide rail 6. The culm A fed into the passage 7 in a horizontal position is transferred from the front to the rear on the guide rail 6 as the conveyor 5 moves in the direction of the arrow shown in FIG. be done.

For safety reasons, the portion of the exit end of the conveyor 5 that protrudes rearward from the upper cover 2 is covered entirely with a conveyor cover 8 shown in FIG. 2, except for its lower surface.

Therefore, the conveyor cover 8 has an inverted U-shaped cross section.

The guide rail 6
An intake port 12 provided at a position immediately below the outlet end of the
The length in the left-right direction (in the direction perpendicular to the drawing in FIG. 1) is shorter than the length of the culm A.

Therefore, when guiding the culm A to the culm outlet 3 without cutting it,
The culm A transferred by the conveyor 5 can move on the upper wall 11 without falling into the intake port 12.

A discharge port 13 for discharging cut pieces of the culm A is formed at the lower end of the casing 10.

Also, inside the casing 10, a pair of culm retraction rollers 1 are provided.
6 and 17 are housed in such a state that they are in contact with each other.

. The front roller 16 is rotatably supported on a pivot shaft 18 fixed to the left and right side walls 14, 14 of the casing 10, and the right fixed pivot shaft 18 has a long end protruding into the roller 16. , an arm 19 is fixed to the tip of the arm 19, and a culm scraping rod 20 that penetrates through a hole 21 formed in the roller 16 and projects to the outside is pivotally attached to the tip of the arm 19.

. Therefore, the scraping rod 20 rotates around the tip of the arm 19 as the roller 16 rotates, so the tip draws a circle eccentric to the center of the pivot 18 and lies above the intake port 12. It acts to scrape the culm A.

On the other hand, the rear roller 17 is made of an elastic material such as rubber, and is fixed to a rotating shaft 22 rotatably extended between the left and right side walls 14,14.

A fixed blade 23 is disposed below the roller 16 and is fixed to the left and right side walls 14, 14, and a rotary blade 24 that cuts the culm A in cooperation with the fixed blade 23 is attached to the left and right side walls 14, 14.
14 via a shaft 25 so as to be freely rotatable.

A dropper 26 is provided on the rear wall 15 of the casing 10. The dropper 26 is made up of a stand 28 and a pair of support rods 29.

The culm support stand 28 is pivoted to the required number of brackets 27 fixed to the rear wall 15 so as to be able to swing vertically, and the removal culm support is pivoted to a stopper 30 attached to the base of the stand 28 and the right side wall 1.
The stopper 30 is biased in the direction of pressing the stopper 30 against the rear wall 15 by a horizontal plate 31 fixed to the rear wall 15 and a spring 32 extending between the horizontal plate 31 and the horizontal plate 31 fixed to the rear wall 15 .

The support platform 28 is in this state and is approximately horizontal, but when a predetermined amount of the culm A is placed on it, the spring 32 is stretched by the weight of the culm A. The bundle of culms A can be released into the field when the culms A have become substantially drooping.

A pair of support rods 29 are removably attached to the upper cover 2 by appropriate means, and the culm support is installed opposite to the stand 28 so as to form an inverted shape when viewed from the side.

The structure of the vicinity of the rear part of the combine harvester 1 is as described above. Next, the structure of the culm transfer switching device according to this invention will be explained.

A safety lid 33 is provided at the culm outlet 3 of the upper cover 2, and the safety lid 33 is attached to the upper edge of the culm outlet 3 by a required number of hinges 34 so as to be able to swing vertically to open and close.

A pair of brackets 35° 35 are attached at a predetermined interval in a hanging manner on the inner surface of the upper wall 2a of the upper cover 2, slightly to the right of the center in the width direction.
A pin 36 is fixed to the pin 36, and a switching operation mechanism 38 for switching the transfer of the culm A between the culm cutting device 9 and the culm outlet 3 is rotatably attached to the pin 36.

The switching operation mechanism 38 is made of a single thin elastic metal rod, which is bent into an approximately L shape with a hole 37 formed in the center thereof, and has a switching lever 39 on the negative side thereof. The other side is an operating lever 40.

The switching operation mechanism 38, which is formed by integrally bending the switching lever 39 and the operation lever 40, has a hole 3 in the central bent part.
7 is inserted through a pin 36 fixed to the bracket 35.35.

When installing the switching operation mechanism 38, the operating lever 40 passes through a positioning hole 41 formed in the upper wall of the upper cover 2 and faces upward, while the switching lever 39 faces upward. It is positioned in front of the world.

As is clear from FIG. 3, the positioning hole 41 has a planar shape that is approximately a =-shaped slit, and has an arc-shaped direct discharge side locking portion 41a and a cutting discharge side locking portion on the inner edges of both front and rear ends. A portion 41b is formed.

The operating lever 40 is configured to select either the direct discharge side locking portion 41a or the cutting/discharge side locking portion 41b and lock it using its own elasticity.

The switching lever 39 facing the inside of the upper cover 2 is configured such that when the operation lever 40 is locked with the direct discharge side locking portion 41a of the positioning through hole 41, the tip of the switching lever 39 pushes up the safety m33 and approximately It is made so that it is held horizontally,
Position the operating lever 40 at the cutting/discharging side locking part 4 of the through hole 41
1b, the switching lever 39 is held in a substantially hanging shape toward the intake port 12 of the culm cutting device 9.

In short, the switching lever 39 has a length that allows its tip to enter the intake port 12 and to come into contact with the upper edge of the safety lid 33. , the intake port 12 and the safety lid 33 of the culm cutting device 9
and the upper edge of the culm outlet 3 provided with the
It is designed to be positioned at a predetermined position.

Note that the bracket 35. ．． 35, the switching lever 3
A stopper 42 is attached to prevent the rotation of the rotor 9 in the clockwise direction beyond the position indicated by the dashed line in FIG.

Below, a method of using the above combine harvester will be explained.

First, a case where the culm A is directly discharged as it is without being cut will be explained.

First, the operation lever 40 is engaged with the direct discharge side engagement portion 41a of the positioning hole 41, and positioned substantially vertically as shown by the solid line in FIG.

In this case, the operating lever 40 is reliably fixed directly to the discharge side locking portion 41a by utilizing the elasticity of the switching operating mechanism 38 itself.

By this operation, the tip of the switching lever 39 comes into contact with the safety lid 33, pushes it backward and outward, and holds it in a substantially horizontal position, thus opening the culm outlet 3.

After the above preparation, when the combine harvester 1 is operated in the field, the rice is harvested and threshed, and the culm A is transferred by the culm transfer device 4, that is, by the cooperation of the conveyor 5 and the guide trail 6, or by the conveyor. 5 and the upper wall 11 of the casing 10, the dropper 26 is conveyed through the upper part of the intake port 12 of the culm cutting device 9 to the culm outlet 3, and the dropper 26 is placed on the stand 2.
Accepted on 8th.

When a predetermined amount of the culms A accumulates in the 28th tray, the spring 32 expands against the weight, and the bundle of culms A is discharged to the field.

Then, the receiving stand 28 that has discharged the culm A returns to its original position by the action of the spring 32, and receives the culm A that is discharged from the culm side outlet 3 again.

In addition, during the above-mentioned work, the culm cutting device 9 is stopped in such a state that the tip of the scraping rod 20 does not protrude from the intake port 12 of the cutting device 9.

Next, the case where the culm A is cut and discharged will be explained.

Now, after forcibly releasing the operation lever 40 that is locked to the direct discharge side locking part 41a of the positioning through hole 41 against its elasticity, move the switching lever 39 clockwise until it hits the stopper 42. (in Figure 1).

Using the elastic force of the switching operation mechanism 38 itself, the operation lever 40 is forcibly locked to the cutting/discharging side locking part 41b.

In this way, the switching lever 39 is held in a hanging state toward the intake port 12 of the culm cutting device 9, and at the same time, the safety lid 33 lowers its tip and closes the culm outlet 3.

After such preparation, when the combine 1 is operated in the field, the rice is harvested and threshed, and the culm A is transported to the upper wall 11 of the casing 10 by the culm transfer device 4, but the culm A is transported to the upper wall 11 of the casing 10 by the culm transfer device 4. The lever 39 prevents the culm from moving toward the culm outlet 3 side.

On the other hand, in conjunction with the operation of the operating lever 40, the rollers 16,1
7 has started rotating, the scraping rod 20 operates and forcibly scrapes the blocked culm A above the intake port 12 into the intake port 12. Through the cooperation of the rod 20 and the switching lever 39, the culm A is bent into an = shape and introduced into the intake port 12, and the rollers 16, 17
It is wound up by the blade and sent toward the fixed blade 23 and the rotating blade 24.

The culm A has a rotating rotary blade 24 and a fixed blade 23.
The culm is cut into a predetermined length by cooperation with the culm cutter 9, and is discharged to the field through the discharge port 13 of the culm cutting device 9.

Note that the combine harvester of this invention does not necessarily require a dropper, and may be of a type that continuously discharges the long culm from the rear of the combine without temporarily retaining it. Of course.

As mentioned above, the exhaust culm transfer switching device according to this invention bends a single elastic metal thin rod into an L-shape on a bracket vertically installed on the upper cover at a position directly above the intake of the exhaust culm cutting device. A switching mechanism formed to have a switching lever and a control lever is rotatably mounted, and one-touch operation of the switching mechanism ensures that the culm is transferred in either the direct discharge side or the cut discharge side. It can be easily switched, and the safety lid automatically closes the culm outlet when cutting the culm, so the operator will not be caught in the culm cutting device.

In addition, the structure of the culm transfer switching device according to this invention is extremely simplified as described above, so the number of parts is extremely small, and therefore assembly work during manufacturing is efficient and easy. At the same time, maintenance and inspection during use is also easy, which is an excellent effect.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention, in which Fig. 1 is a longitudinal sectional view showing the vicinity of the rear of the combine, Fig. 2 is a plan view showing the vicinity of the rear of the combine with the operating lever cut off, and Fig. 3 The figure is an enlarged plan view of the positioning hole for locking the operating lever. A... Culm, 1... Combine harvester, 2.
...Top cover, 2a...Top wall, 3...
... Culm outlet, 4... Culm transfer device, 9.
... Culm cutting device, 11 ... Upper wall of casing, 12 ... Inlet to cutting device, 33.
...Safety lid, 38...Switching operation mechanism 3
9...Switching L' bar 40...Operation lever.

Claims (1)

[Scope of utility model registration request] A culm cutting device is provided near the exit side of the culm transfer device that transfers the culm backward in a horizontal position, and a culm cutting device is installed on the rear wall of the upper cover that covers the upper part of the culm switching device to discharge the culm backward. An exhaust culm transfer switching device for a combine harvester provided with a culm outlet, the switching operation mechanism being rotatably attached to a bracket vertically installed at a position directly above the intake port of the exhaust culm cutting device on the inner surface of the upper cover; It consists of a safety lid that is vertically swingably attached to the upper edge of the culm outlet and opens and closes the culm outlet, and the switching operation mechanism is made of a single elastic metal thin rod shaped like an L, and the two sides thereof are The operating lever is formed such that one side is an operating lever and the other side is a switching lever, and the operating lever passes through a positioning hole provided in the upper wall of the upper cover and faces above and outside of the upper cover, and the other side is a switching lever. The cutting/discharging side locking part and the direct discharge side locking part of the hole are selected so that they are locked by their own elasticity, and the switching lever positions the operating lever and locks the cutting/discharging side of the through hole. When the operation lever is locked in the direct discharge side locking part of the positioning hole, the switching lever A culm transfer switching device for a combine harvester, characterized in that a tip of the safety lid is configured to push up the safety lid and hold it in a substantially horizontal position.