JPS581167Y2 - Straw removal device in combine harvester - Google Patents

Description

[Detailed description of the invention] The present invention is designed to collect waste straw, which is a threshed husk discharged from a threshing unit mounted on the combine body, into a waste straw that is mounted on the rear side of the combine harvester body. This invention relates to an improvement in a straw removal device that is arranged above the straw removal cutter and mounted on the combine harvester body so as to carry the straw out beyond the upper surface of the cutter and to the rear of the combine harvester body.

The purpose of the present invention is to:
A non-active state when the waste straw discharged from the threshing section is supplied to the waste straw cutter, and an active state when the waste straw discharged from the threshing section is carried out uncut to the rear of the straw cutter frame. In addition to ensuring that the switching operation is performed reliably, the switching operation when switching from the inactive state to the active state prevents the floating straw discharged from the threshing section and supplied to the straw cutter. To ensure that a presser rod provided to remove grains is retracted to a position where it does not come into contact with the flow of straw discharged from a threshing part and carried out by a straw discharge device.

The device of the present invention to achieve this objective is to attach the machine frame on which the conveyor belt of the above-mentioned straw discharging device is stretched and supported, to a supporting machine frame that is appropriately provided on the body of the combine harvester.
The front end of the conveyor belt in the conveyance direction is supported on a shaft so that it can rotate up and down, and as the machine frame moves up and down, the front end, which is the starting end of the conveyor belt, becomes the terminal end of the husk conveyor of the threshing section. By switching between a position close to the part and a position away from the part above, the structure is configured so that it can be switched between an active state in which the waste straw is inherited and carried out and a non-active state in which the waste straw is not inherited. The presser rod, which is used to prevent straw from floating toward the straw cutter after being discharged from the machine, is pivoted so that it can rotate up and down, and when it rotates upward, it retreats from the flow of straw. The machine frame and the presser rod are interlocked so that when the machine frame rotates, the presser rod rotates in a direction opposite to the rotation direction of the machine frame. It is something.

Next, an example of implementation will be explained in detail according to the drawings.
In the figure, A omits the first half and only shows the second half, and 1 is a threshing section of a combine that is constructed by mounting a self-described threshing device on the body of the combine, and 1 is the threshing process performed by the threshing section A. The husk (straw) is transported to the rear of the machine a of the threshing section A, which is the rear of the combine machine, and is mounted on the machine a of the threshing section A so as to be discharged from the discharge port 1a at the end. The device consists of a conveyor cheno 10 and a conveyor rail 11 facing it.

In this embodiment, the culm conveying device 1 includes a threshing section A.
Although it is an extension of the foot chain device, it may also be a straw removal chain device that inherits the straw from the foot chain device and carries it out to the rear of the machine a in the threshing section A.

B is a straw cutter installed on the rear side of the machine body a of the threshing section A, which is the rear side of the combine machine body, so as to receive and cut the straw S discharged from the threshing section A by the shell culm conveying device 1. In this example, the machine frame 20 is formed into a machine housing shape.
A feed roll 21 and a feed roll 22 are placed in the open part on the top side of the
A fixed blade 24 and a rotary blade 25 are installed in a cutting chamber 23 formed in the inner cavity of the machine frame 20 below the feed rolls 21 and 22. This is a conventionally known cylinder-type waste straw cutter that houses a cylinder-type cutting mechanism and discharges straw pieces cut by the cutting mechanism from an outlet 26 of a cutting chamber 23, and the above-mentioned feed One of the feed rolls 21 and 22 is equipped with a crank finger 2γ that bends the culm discharged from the above-mentioned culm conveying device 1 into two and scrapes it into the opposing gap of the feed roll 2L22. There is.

C is a machine frame of the straw cutter B so that the waste straw discharged from the threshing section A is carried out beyond the upper surface of the machine frame 20 of the straw cutter B to the rear of the machine frame 20 and released. This is a straw removal device disposed above the machine frame 30, in which a conveyor belt 33 consisting of a rubber belt with lugs or a channel shape with protrusions is endlessly looped around transmission wheels 31 and 32 which are respectively pivotally supported at both the front and rear ends of the machine frame 30. Turn the conveyor belt 3
A conveyor rail 34 is placed opposite to the upper surface side of the conveyor belt 3, and one of the aforementioned conduction sieves is driven through an appropriate transmission mechanism to drive the conveyor belt 33 in the direction shown by the arrow in FIG. By rotating, the conveyor belt 33 and the conveyor rail 34
The construction is the same as that of this type of straw carrying-out device, but the machine frame 30 that supports the conveyor belt 33 in tension has its rear end side connected to the waste straw. Using the machine frame 20 of the straw cutter B, it is rotatably mounted on a mounting frame 40 provided on the body of the combine via a support shaft 41, so that the front end side can be freely raised and lowered around the support shaft 41. The machine frame 30 is supported to rotate, and the rotation of the machine frame 30 causes the machine frame 3 to rotate.
The front end 3 which is the starting end in the conveying direction of the conveying bell l to be stretched over the
3a is the position facing the discharge port 1a, which is the terminal end of the shell culm conveying device 1 of the threshing section A, as shown in FIG. It is arranged to move upward away from the discharge port 1a of the conveying device 1 and switch to a state in which the waste straw discharged from the discharge port 1a is not inherited.

At the front end of the machine frame 30, an input gear G is pivotally supported on the outer side of the machine frame 30, and the input gear G projects toward the outer side of the machine frame 30 of the rotating shaft of the conduction sieve 31. By meshing with a transmission gear 35 attached to the shaft end and driving the input gear G, the transmission sieve 31 is driven to rotate and the conveyor belt 33 is operated. At the terminal end of the shell culm conveying device 1 of A, the rotating shaft of a sprocket 12 that supports the rotating section on the terminal end side of the conveying chino 10 is extended outward, and a drive gear DG is attached to the extended end.
By mounting this, the drive gear DG, which is driven and rotated by the operation of the conveyor cheno 10, is pivotally supported, and when the machine frame 30 is rotated downward, the drive gear DG is connected to the input gear G. The conveyor belt 31 mentioned above is operated by meshing with the conveyor belt 31.

In this embodiment, the conveyor belts 33 of the straw removal device C are stretched across the machine frame 30 in two parallel rows on the left and right sides.

Further, the conveyor rail 34 is formed into a channel shape with a downwardly facing cross section, and is disposed within the left and right intervals of the two conveyor belts 33.
．． 33 and provided on the starting end side in the conveyance direction, is supported by the machine body a of the threshing section A in a fixed state, and the machine frame 30 is
Both sides of this conveyance rail 34 are designed to rotate up and down.

50 is an operating arm whose one end is connected to the machine frame 30 so as to rotate the machine frame 30, and the other end is connected to the machine frame 2 of the straw cutter B.
0 is used to connect the combine harvester body with a bell crank-shaped operating lever 52 that is provided to rotate around a support shaft 51, and by rotating the operating lever 52 manually or by remote control, This is so that the aforementioned switching rotation is performed.

6 raises and rotates the machine frame 30 to move the shell culm conveying device 1
When the crank finger 21 rotating in the direction of the arrow in FIG. 1 operates to scrape the straw discharged from the discharge port 1a of the This presser rod is provided to prevent the straw from floating up, and is pivotally supported on the machine body a of the threshing section A so that it can rotate up and down about a support shaft 60, and is biased by a spring 61 toward the rising side.

The presser rod 6 is connected to the operating lever 52 via an IJ wire 53, and when the machine frame 30 rotates downward, it rotates upward as shown in FIG. 30 rotates upward, the bell crank-shaped operating lever 5
As the machine frame 30 rotates, the presser rod 6 rotates in the opposite direction to the rotation direction of the machine frame 30 so that the release wire 53 is pulled by the operation of step 2 and rotates downward. That's how it is.

Further, 54 is a release wire that connects the tension clutch arm 29 that controls the transmission of power to the input shaft 28 of the straw cutter B on and off, and the aforementioned operating lever 52, and the machine frame 30 is shown in FIG. As shown in the figure, when the straw discharged from the discharge port 1a is transferred to the straw discharging device C, the clutch arm 2
The clutch arm 29 acts to loosen the spring 55 that draws the clutch arm 9 to the tensioned position and move the clutch arm 29 to the "off" position.

In addition, D is a dropper installed on the rear surface of the machine frame 20 of the straw removal cutter B, 56 is a knock pin for fixing the position of the operation lever 52, and 36 is a dropper attached to the machine frame 30 to assist the operation when rotating the machine frame 30. It is a grip part provided on the holder.

Next, to explain the function and effect, the straw removal device for a combine harvester according to the present invention rotates the machine frame 30, which supports the conveyor belt 33 under tension, so that the starting end 33a side of the conveyor belt 33 moves up and down. The starting end 33a of the conveyor belt 33 is freely pivoted to the supporting machine frame 40, and by vertical movement of the machine frame 30, the starting end 33a of the conveying belt 33 is connected to the discharge port formed at the terminal end of the culm conveying device 1 of the threshing section A. By switching between a position close to 1a and a position away from above, it is possible to switch between a working state in which the straw is inherited and a non-working state in which the straw is not inherited. When the state is switched to the non-operating state, the straw flowing from the threshing section A to the straw cutting cutter can be reliably switched without causing any confusion, and the straw is discharged from the threshing section A. When supplying waste straw to the waste straw cutter B, a presser rod 6 provided to prevent the waste straw from floating up is rotatably supported vertically. Since the machine frame 30 is linked so that it rotates upward as it rotates downward, the conveyor belt 33, which is in an inactive state as shown in FIG. 1, is in the inactive state as shown in FIG. When the machine frame 30 is rotated downward to bring it into an operating state, the presser foot 6 replaces the descending conveyor belt 33 and rotates upward so that it is located above the conveyor belt 33. As a result, the waste straw is reliably evacuated from the flow of waste straw that is transferred to the conveyor belt 33.

Although the apparatus according to the embodiment of the present invention is an underchain type in which the conveyor rail 34 faces the upper surface of the conveyor belt 33, it may be an overchain type in which the conveyor rail is on the lower surface. is the transport rail 34
is supported on the supporting machine frame 40 side so as to move up and down together with the machine frame 30.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional side view of an embodiment of the device of the present invention in a non-operating state, FIG. 2 is a longitudinal sectional side view of the same device in an operating state, FIG. 3 is a perspective view of the same device, and FIG. FIG. 3 is a side view of a linkage mechanism portion. Explanation of drawing symbols, A... Threshing section, a...
・The same aircraft as above, 1...Culm conveying device, 1a...
... Discharge port of the above device, 10 ... Conveyance cheno of the same device, 11 ... Conveyance rail, 12 ...
... Sprocket, B ... Straw cutter
20...Machine frame as above, C...Straw removal device, 30...Machine frame, 31.32...
Transmission wheel, 33... Conveyor belt, 34...
Conveyance rail, 40...Support machine frame, 41...
...Spindle, 50...Operating arm, 51...
...Spindle, 52...Operating lever, 53...
...Release wire 6... Presser rod, 60.
...Spindle, 61...Spring.

Claims (1)

[Scope of utility model registration request] It is arranged above the straw cutter mounted on the rear side of the combine harvester body, and the straw discharged from the terminal end of the husk conveying device of the threshing section is moved backwards beyond the upper part of the machine frame of the straw cutter. In the straw removal device, the rear end of the casing of the conveyor belt is attached to a supporting frame appropriately provided on the body of the combine harvester, and the front end of the casing of the conveyor belt is attached to a shaft so as to rotate up and down. A presser rod is provided to support the rack and to press the waste straw discharged from the threshing section from above and guide it toward the waste straw cutter. A straw removal conveying device for a combine harvester, characterized in that, as the machine frame rotates, a presser rod rotates in a direction opposite to the rotation direction of the machine frame.